U.S. patent application number 14/235173 was filed with the patent office on 2015-04-02 for work vehicle.
The applicant listed for this patent is Komatsu Ltd.. Invention is credited to Kiichirou Kouno, Naoto Nakamura, Kenji Ohiwa, Kozo Okuda.
Application Number | 20150090517 14/235173 |
Document ID | / |
Family ID | 50941773 |
Filed Date | 2015-04-02 |
United States Patent
Application |
20150090517 |
Kind Code |
A1 |
Okuda; Kozo ; et
al. |
April 2, 2015 |
WORK VEHICLE
Abstract
A work vehicle includes a reducing agent tank, a battery, a
reducing agent tank mounting member, a battery cover and a first
guide member. The battery and the tank are positioned in a row. The
mounting member has a bottom plate, and a partition plate extending
upward from the bottom plate between the tank and the battery. The
tank is mounted on the bottom plate. The battery cover has an upper
plate above the battery, and a side plate extending downward from a
side of the upper plate between the tank and the battery. The first
guide member extends from the side plate toward the tank and slopes
downward. Preferably, a first end of a second guide member disposed
below the first guide member is positioned closer to the battery
than a distal end of the first guide member, with the second guide
member sloping downward toward the tank.
Inventors: |
Okuda; Kozo; (Hirakata-shi,
JP) ; Nakamura; Naoto; (Hirakata-shi, JP) ;
Kouno; Kiichirou; (Hirakata-shi, JP) ; Ohiwa;
Kenji; (Hirakata-shi, JP) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
Komatsu Ltd. |
Tokyo |
|
JP |
|
|
Family ID: |
50941773 |
Appl. No.: |
14/235173 |
Filed: |
September 27, 2013 |
PCT Filed: |
September 27, 2013 |
PCT NO: |
PCT/JP2013/076301 |
371 Date: |
January 27, 2014 |
Current U.S.
Class: |
180/309 |
Current CPC
Class: |
B60L 2200/40 20130101;
B60L 50/66 20190201; F01N 13/18 20130101; E02F 9/0866 20130101;
Y02T 10/70 20130101; Y02T 10/705 20130101; F01N 2590/08 20130101;
B60L 50/64 20190201; Y02A 50/20 20180101; B60L 50/15 20190201; F01N
2610/1406 20130101; B60L 2270/12 20130101; F01N 3/2066 20130101;
Y02A 50/2325 20180101; Y02T 10/7077 20130101; Y02T 10/7005
20130101; E02F 9/0883 20130101; Y02T 10/7072 20130101 |
Class at
Publication: |
180/309 |
International
Class: |
E02F 9/08 20060101
E02F009/08 |
Claims
1. A work vehicle comprising: a reducing agent tank; a battery
disposed in a row with the reducing agent tank with a gap
therebetween; a reducing agent tank mounting member having a bottom
plate with reducing agent tank mounted thereon, and a partition
plate extending upward from the bottom plate and positioned between
the reducing agent tank and the battery; a battery cover having an
upper plate positioned above the battery, and a side plate
extending downward from a side of the upper plate and positioned
between the reducing agent tank and the battery; a first guide
member extending from the side plate toward the reducing agent
tank, the first guide member sloping downward; and a second guide
member disposed below the first guide member, the second guide
member sloping downward toward the reducing agent tank, the second
guide member having a first end positioned closer to the battery
than a distal end of the first guide member.
2. The work vehicle according to claim 1, wherein the second guide
member further has a second end positioned closer to the reducing
agent tank than the partition plate.
3. The work vehicle according to claim 1, further comprising: a
partitioning member extending between the second guide member and
the partition plate.
4. The work vehicle according to claim 3, wherein the partitioning
member hangs down from the second guide member, and a lower end of
the partitioning member is positioned closer to the reducing agent
tank than the partition plate and is positioned lower than an upper
end of the partition plate.
5. The work vehicle according to claim 3, wherein the partitioning
member is made of rubber.
6. A work vehicle comprising: a reducing agent tank; a battery
disposed in a row with the reducing agent tank with a gap
therebetween; a reducing agent tank mounting member having a bottom
plate with the reducing agent tank mounted thereon, and a partition
plate extending upward from the bottom plate and positioned between
the reducing agent tank and the battery; a battery cover having an
upper plate positioned above the battery, and a side plate
extending downward from a side of the upper plate and positioned
between the reducing agent tank and the battery; and a first guide
member extending from the side plate toward the reducing agent
tank, the first guide member sloping downward, a distal end of the
first guide member being positioned closer to the reducing agent
tank than the partition plate.
7. The work vehicle according to claim 2, further comprising: a
partitioning member extending between the second guide member and
the partition plate.
8. The work vehicle according to claim 7, wherein the partitioning
member hangs down from the second guide member, and a lower end of
the partitioning member is positioned closer to the reducing agent
tank than the partition plate and is positioned lower than an upper
end of the partition plate.
9. The work vehicle according to claim 8, wherein the partitioning
member is made of rubber.
10. The work vehicle according to claim 7, wherein the partitioning
member is made of rubber.
11. The work vehicle according to claim 4, wherein the partitioning
member is made of rubber.
Description
CROSS-REFERENCE TO RELATED APPLICATIONS
[0001] This application is a U.S. National stage application of
International Application No. PCT/JP2013/076301, filed on Sep. 27,
2013.
BACKGROUND
[0002] 1. Field of the Invention
[0003] The present invention relates to a work vehicle.
[0004] 2. Background Information
[0005] A work vehicle equipped with a selective catalyst reduction
device for treating exhaust gas from an engine has been proposed. A
hydraulic excavator described in Japanese Patent Laid-open No.
2012-237232, for example, includes a selective catalyst reduction
device and a reducing agent tank. The selective catalyst reduction
device uses a reducing agent such as urea water to treat the
exhaust gas. The reducing agent is stored in the reducing agent
tank.
SUMMARY
[0006] The reducing agent tank is disposed close to a battery and
the battery is covered by a battery cover. When replenishing the
reducing agent in the reducing agent tank, an operator may perform
the replenishing in a state in which a container for storing the
reducing agent for replenishing is placed on the battery cover. If
the reducing agent spills while replenishing the reducing agent
tank with the reducing agent from the container for replenishing, a
problem arises in that the spilled reducing agent flows along the
battery cover toward the battery and the reducing agent may adhere
to the battery.
[0007] An object of the present invention is to prevent the
adherence of reducing agent on the battery.
[0008] A work vehicle according to a first aspect of the present
invention is equipped with a reducing agent tank, a battery, a
reducing agent tank mounting member, a battery cover, a first guide
member, and a second guide member. The battery is disposed in a row
with the reducing agent tank with a gap therebetween. The reducing
agent tank mounting member has a bottom plate and a partition
plate. The reducing agent tank is mounted on the bottom plate. The
partition plate extends upward from the bottom plate and is
positioned between the reducing agent tank and the battery. The
battery cover has an upper plate and a side plate. The upper plate
is positioned above the battery. The side plate extends downward
from a side of the upper plate and is positioned between the
reducing agent tank and the battery. The first guide member extends
from the side plate toward the reducing agent tank. The first guide
member slopes downward toward the reducing agent tank. The second
guide member is disposed below the first guide member and slopes
downward toward the reducing agent tank. A first end of the second
guide member is positioned closer to the battery than a distal end
of the first guide member.
[0009] When replenishing the reducing agent tank with the reducing
agent on the upper plate of the battery cover, it is easy to spill
the reducing agent on a portion close to the reducing agent tank on
the upper plate of the battery cover. As a result, when the
reducing agent is spilled on the upper plate of the battery cover,
the spilled reducing agent flows down from the upper plate along
the side plate. The first guide member extends from the side plate
toward the reducing agent tank and the second guide member is
disposed below the first guide member. Moreover, the first guide
member and the second guide member both slope downward toward the
reducing agent tank. As a result, the reducing agent flowing
downward along the side plate flows along the first guide member
and drips down from the distal end (end closer to the reducing
agent tank) of the first guide member toward the second guide
member and then flows toward the reducing agent tank. In this way,
the adherence of the reducing agent on the battery can be prevented
since the reducing agent does not flow toward the battery.
[0010] Preferably, a second end of the second guide member is
positioned closer to the reducing agent tank than the partition
plate. According to this configuration, the reducing agent that
drips down from the second end of the second guide member drips
down to the reducing agent tank mounting member and does not flow
toward the battery. As a result, the adherence of the reducing
agent on the battery can be prevented.
[0011] The work vehicle preferably is equipped with a partitioning
member that extends between the second guide member and the
partition plate. According to this configuration, splashing toward
the battery of the reducing agent that drips down onto the reducing
agent tank mounting member can be prevented by the partitioning
member.
[0012] Preferably, the partitioning member hangs down from the
second guide member. Preferably, a lower end of the partitioning
member is positioned closer to the reducing agent tank than the
partition plate and is positioned lower than an upper end of the
partition plate. According to the partitioning member configured in
this way, splashing toward the battery of the reducing agent that
drips down onto the reducing agent tank mounting member can be
prevented more reliably.
[0013] Preferably, the partitioning member is made of rubber.
According to this configuration, there is no concern that the
partitioning member might become distorted and, moreover, the
weight of the partitioning member can be reduced.
[0014] A work vehicle according to a second aspect of the present
invention is equipped with a reducing agent tank, a battery, a
reducing agent tank mounting member, a battery cover, and a first
guide member. The battery is disposed in a row with the reducing
agent tank with a gap therebetween. The reducing agent tank
mounting member has a bottom plate and a partition plate. The
reducing agent tank is mounted on the bottom plate. The partition
plate extends upward from the bottom plate and is positioned
between the reducing agent tank and the battery. The battery cover
has an upper plate and a side plate. The upper plate is positioned
above the battery. The side plate extends downward from a side of
the upper plate and is positioned between the reducing agent tank
and the battery. The first guide member extends from the side plate
toward the reducing agent tank. The first guide member slopes
downward toward the reducing agent tank. A distal end of the first
guide member is positioned closer to the reducing agent tank than
the partition plate.
[0015] According to this configuration, reducing agent spilled on
the battery cover flows downward along the side plate, flows along
the first guide member and drips down from the distal end of the
first guide member. The distal end of the first guide member is
positioned closer to the reducing agent tank than the partition
plate. As a result, the reducing agent that drips down from the
distal end of the first guide member drips down to the reducing
agent tank mounting member and does not flow toward the battery. As
a result, the adherence of the reducing agent on the battery can be
prevented.
[0016] According to the present invention, adherence of reducing
agent on the battery can be prevented.
BRIEF DESCRIPTION OF DRAWINGS
[0017] FIG. 1 is a perspective view of a hydraulic excavator.
[0018] FIG. 2 is a back view an internal structure of an engine
room.
[0019] FIG. 3 is a perspective view of the exhaust gas
post-processing unit.
[0020] FIG. 4 is a perspective view of a frame structure of the
hydraulic excavator.
[0021] FIG. 5 is a partial perspective view of a detail of the
frame structure of the hydraulic excavator.
[0022] FIG. 6 is a side cross-sectional view of a right front part
of a vehicle body.
[0023] FIG. 7 is a perspective view of a detail close to a battery
and a reducing agent tank.
[0024] FIG. 8 is a perspective view of a detail close to a reducing
agent tank.
[0025] FIG. 9 is a side cross-sectional view of a detail close to a
first and a second guide member.
[0026] FIG. 10 is a side cross-sectional view of a right front part
of a vehicle body according to a second modified example.
DETAILED DESCRIPTION OF EMBODIMENT(S)
[0027] A hydraulic excavator 100 according to an embodiment of the
present invention shall be explained in detail with reference to
the figures. FIG. 1 is a perspective view of the hydraulic
excavator 100. In the following explanation, "front" and "rear"
refer to the front and the rear of a vehicle body 1. In the
following description, "right," "left," "up," and "down" indicate
directions relative to a state of looking forward from the driver's
seat, and "vehicle width direction" and "left-right direction" have
the same meaning.
[0028] As illustrated in FIG. 1, the hydraulic excavator (example
of a work vehicle) 100 includes the vehicle body 1 and work
implement 4, and the work implement 4 is used for performing
desired work.
[0029] The vehicle body 1 has an undercarriage 2 and a revolving
body 3. The undercarriage 2 includes a pair of travel devices 2a,
2b. The travel device 2a has a crawler belt 2d and the travel
device 2b has a crawler belt 2c. The travel devices 2a, 2b allow
the hydraulic excavator 100 to travel due to the crawler belts 2c,
2d being driven by driving power from an engine 10.
[0030] The revolving body 3 is mounted on the undercarriage 2, and
is provided in a manner that allows revolving in relation to the
undercarriage 2. The revolving body 3 has an operating cabin 5, a
fuel tank 6, an operating fluid tank 7, an engine room 8, and a
counterweight 9.
[0031] The fuel tank 6 stores fuel for driving the engine 10 and is
disposed in front of the operating fluid tank 7. The operating
fluid tank 7 stores operating fluid. The operating fluid tank 7 is
arranged in a line in the front-back direction with the fuel tank
6.
[0032] The engine room 8 houses equipment such as the engine 10, a
hydraulic pump 11, an exhaust gas post-processing unit 20 and the
like as described below. The engine room 8 is disposed to the rear
of the operating cabin 5, the fuel tank 6, and the operating fluid
tank 7. An engine hood 12 is disposed above the engine room 8. The
counterweight 9 is disposed to the rear of the engine room 8.
[0033] The work implement 4 is attached at the front of the
revolving body 3. The work implement 4 includes a boom 4a, an arm
4b, a bucket 4c, a pair of boom cylinders 4d, an arm cylinder 4e,
and a bucket cylinder 4f. The proximal end of the boom 4a is
coupled to the revolving body 3 in a rotatable manner. The proximal
end of the arm 4b is coupled in a rotatable manner to the distal
end of the boom 4a. The bucket 4c is coupled in a rotatable manner
to the distal end of the arm 4b. The boom cylinders 4d, the arm
cylinder 4e, and the bucket cylinder 4f are hydraulic cylinders and
are driven by operating fluid discharged from the belowmentioned
hydraulic pump 11. The boom cylinders 4d actuate the boom 4a. The
arm cylinder 4e actuates the arm 4b. The bucket cylinder 4f
actuates the bucket 4c. The driving of the cylinders 4d, 4e, and 4f
drives the work implement 4.
[0034] FIG. 2 illustrates the internal structure of the engine room
8 as seen from the rear of the vehicle. As illustrated in FIG. 2,
the engine 10, a flywheel housing 13, the hydraulic pump 11, the
exhaust gas post-processing unit 20, a fan 14, and a radiator 15
are disposed in the engine room 8. The fan 14 produces an air
current to be blown from the right to the left inside the engine
room 8. The radiator 15 is installed on the right side of the fan
14. Cooling air is introduced into the engine room 8 from outside
through air vent holes 801 (see FIG. 1) when the fan 14 is
operating. The cooling water flowing inside the radiator 15 is
cooled by the cooling air. The engine 10, the flywheel housing 13,
and the hydraulic pump 11 are disposed in order in a row in the
vehicle width direction.
[0035] The hydraulic pump 11 is driven by the engine 10. The
hydraulic pump 11 is disposed on the left side of the engine 10.
The flywheel housing 13 is disposed between the engine 10 and the
hydraulic pump 11. The flywheel housing 13 is attached to the left
side surface the engine 10. The hydraulic pump 11 is attached to
the left side surface the flywheel housing 13.
[0036] FIG. 3 is a perspective view of the exhaust gas
post-processing unit 20 as seen from the right front. As
illustrated in FIGS. 2 and 3, the exhaust gas post-processing unit
20 treats exhaust from the engine 10. The exhaust gas
post-processing unit 20 has a diesel particulate filtering device
(DPF) 21, a selective catalyst reduction device (SCR) 22, a
connecting pipe 23, and an injection device 24.
[0037] The diesel particulate filtering device 21 is a device for
treating exhaust from the engine 10. Exhaust gas is supplied from
the engine 10 via a turbo charger (not shown) and a pipe 31 to the
diesel particulate filtering device 21. Specifically, the diesel
particulate filtering device 21 is a device that collects, in a
filter, particulate matter included in the exhaust gas. The diesel
particulate filtering device 21 burns the collected particulate
matter with a heater provided with the filter. The diesel
particulate filtering device 21 has a roughly cylindrical shape and
is disposed so that the longitudinal direction thereof extends in
the front-back direction.
[0038] The connecting pipe 23 is a pipe for connecting the diesel
particulate filtering device 21 and the selective catalyst
reduction device 22, and is disposed above the engine 10. The
entire connecting pipe 23 is formed in an S-shape and includes a
first bend section 23a, a linear section 23b, and a second bend
section 23c. One end of the first bend section 23a is connected to
an exhaust gas outlet 21a of the diesel particulate filtering
device 21 and the other end of the first bend section 23a is
connected to one end of the linear section 23b. One end of the
second bend section 23c is connected to an exhaust gas inlet 22a of
the selective catalyst reduction device 22, and the other end of
the second bend section 23c is connected to the other end of the
linear section 23b. The linear section 23b extends in the
longitudinal direction of the connecting pipe 23 between the first
bend section 23a and the second bend section 23c.
[0039] The injection device 24 is attached to the first bend
section 23a. The injection device 24 is a device for injecting a
reducing agent sucked up from a belowmentioned reducing agent tank
18 by a reducing agent pump 19, into the connecting pipe 23 in
order to add the reducing agent to the exhaust gas flowing through
the connecting pipe 23. The reducing agent in the present
embodiment is urea water. The urea water mixed in the exhaust gas
is hydrolyzed due to the heat of the exhaust gas to become ammonia,
and the ammonia is fed with the exhaust gas through the connecting
pipe 23 to the selective catalyst reduction device 22.
[0040] The selective catalyst reduction device 22 is a device for
treating the exhaust gas from the engine 10. Specifically, the
selective catalyst reduction device 22 reduces nitrogen oxide
compounds with the ammonia obtained by the hydrolyzation of the
urea. The selective catalyst reduction device 22 has a roughly
cylindrical shape and is disposed so that the longitudinal
direction thereof extends in the vehicle front-back direction. An
exhaust pipe 33 is connected to the selective catalyst reduction
device 22 and the exhaust pipe 33 projects upward from an engine
hood 12. Exhaust gas treated by the exhaust gas post-processing
unit 20 is discharged to the outside from the exhaust pipe 33.
[0041] The diesel particulate filtering device 21, the selective
catalyst reduction device 22, the connecting pipe 23, and the
injection device 24 are positioned above the engine 10. The diesel
particulate filtering device 21, the connecting pipe 23, and the
selective catalyst reduction device 22 are disposed parallel to
each other. The diesel particulate filtering device 21 and the
selective catalyst reduction device 22 are disposed close to each
other and the longitudinal directions thereof are disposed in a row
orthogonal to the vehicle width direction. The engine 10, the
selective catalyst reduction device 22, the connecting pipe 23, and
the diesel particulate filtering device 21 are disposed in order
from the vehicle width direction right side.
[0042] FIG. 4 is a perspective view of a frame structure of the
hydraulic excavator 10 seen from the right front. As illustrated in
FIG. 4, the hydraulic excavator 100 includes a revolving frame 26
and a vehicle body frame 27.
[0043] The revolving frame 26 supports the engine 10 through a
mounting member such as a rubber damper. The revolving frame 26 has
a center frame 30, a first side frame 31, and a second side frame
32. The center frame 30 extends in the front-back direction of the
vehicle. The engine 10 is disposed on a rear part of the center
frame 30. The center frame 30 has a first center frame 301 and a
second center frame 302. The first center frame 301 and the second
center frame 302 are disposed away from each other in the vehicle
width direction. The first center frame 301 and the second center
frame 302 are plate-like members that respectively extend in the
vehicle front-back direction and in the vertical direction. The
center frame 30 has a bottom plate 303. The first center frame 301
and the second center frame 302 are coupled together by the bottom
plate 303.
[0044] The first side frame 31 is disposed on one side in the
vehicle width direction relative to the center frame 30. The second
side frame 32 is disposed on the other side in the vehicle width
direction relative to the center frame 30. In the present
embodiment, the first side frame 31 is disposed to the right of the
center frame 30. The second side frame 32 is disposed to the left
of the center frame 30.
[0045] The first side frame 31 has a shape that extends in the
front-back direction of the vehicle. The first side frame 31 is
disposed away from the center frame 30 in the vehicle width
direction. The first side frame 31 and the center frame 30 are
coupled together by a plurality of beam members 311. Only a portion
of the beam members are given the reference numeral 311 in the
drawings.
[0046] The second side frame 32 has a shape that extends in the
front-back direction of the vehicle. The second side frame 32 is
disposed away from the center frame 30 in the vehicle width
direction. The second side frame 32 and the center frame 30 are
coupled together by a plurality of beam members 321. Only a portion
of the beam members are given the reference numeral 321 in the
drawings.
[0047] The vehicle body frame 27 is provided on the revolving frame
26 in a standing manner. The vehicle body frame 27 is disposed
around equipment such as the engine 10 and the hydraulic pump 11
and the like. The abovementioned exhaust processing device 24 is
attached to the vehicle body frame 27.
[0048] FIG. 5 is a partial perspective view of a detail of the
frame structure of the hydraulic excavator 100 as seen from the
right front. As illustrated in FIG. 5, a battery mounting member 40
is installed in a right front part of the revolving frame 26. The
battery mounting member 40 is a member for mounting a battery 17
(see FIG. 6). Specifically, the battery mounting member 40 has a
bottom plate 41 and a rear plate 42.
[0049] The bottom plate 41 has a rectangular shape and the right
edge thereof is fixed to the first side frame 31 by welding and the
like. The battery 17 (see FIG. 6) is fixed onto the bottom plate 41
by mounting brackets and the like. The rear plate 42 extends upward
from the rear edge of the bottom plate 41. The right edge of the
rear plate 42 is fixed to the first side frame 31 by welding and
the like.
[0050] A reducing agent tank mounting member 50 is installed to the
rear of the battery mounting member 40 and adjacent to the battery
mounting member 40. The reducing agent tank mounting member 50 is a
member for mounting the reducing agent tank 18 (see FIG. 6). The
reducing agent tank mounting member 50 has a bottom plate 51 and a
partition plate 52.
[0051] The bottom plate 51 of the reducing agent tank mounting
member 50 has a rectangular shape and has an opening near the
center. The left edge of the bottom plate 51 is fixed to the center
frame 30 by welding and the like, and the right edge of the bottom
plate 51 is fixed to the first side frame 31 by welding and the
like. The reducing agent tank is fixed onto the bottom plate 51 by
mounting brackets and the like.
[0052] The partition plate 52 of the reducing agent tank mounting
member 50 is positioned between the reducing agent tank 18 and the
battery 17. Specifically, the partition plate 52 extends upward
from the front edge of the bottom plate 51. The partition plate 52
is a plate-like portion that extends in the vertical direction and
extends in the vehicle width direction. The left edge of the
partition plate 52 is fixed to the center frame 30 by welding and
the like, and the right edge of the partition plate 52 is fixed to
the first side frame 31 by welding and the like. The front surface
of the partition plate 52 abuts the rear surface of the rear plate
42 of the battery mounting member 40. The partition plate 52
extends upward further than the rear plate 42.
[0053] FIG. 6 is a side cross-sectional view of a right front part
of the vehicle body 1. As illustrated in FIG. 6, a battery cover 60
is fixed in a removable manner to the revolving frame 26 to cover
the battery 17 that is fixed to the battery mounting member 40. The
battery cover 60 is substantially formed in a rectangular solid
shape and is open at the bottom surface. Specifically, the battery
cover 60 has an upper plate 65 and first to fourth side plates 61
to 64.
[0054] The upper plate 65 has a rectangular shape and is positioned
above the battery 17. The side plates 61 to 64 extend downward from
the edges of the upper plate 65. The first side plate 61 extends
downward from the rear edge of the upper plate 65 and is positioned
between the reducing agent tank 18 and the battery 17.
Specifically, the first side plate 61 is positioned to the rear of
the battery 17. The first side plate 61 corresponds to the side
plate of the present invention.
[0055] The second side plate 62 extends downward from the front
edge of the upper plate 65, the third side plate 63 extends
downward from the left edge of the upper plate 65, and the fourth
side plate 64 extends downward from the right edge of the upper
plate 65. The second to fourth side plates 62 to 64 are attached in
a removable manner directly or indirectly to the revolving frame 27
whereby the battery cover 60 is attached to the revolving frame 27
in a removable manner.
[0056] The first side plate 61 is not attached to the revolving
frame 27. Specifically, a lower end part of the first side plate 61
is positioned above the battery mounting member 40 without touching
the battery mounting member 40. That is, a gap is formed between
the lower end of the first side plate 61 and the battery mounting
member 40. The first side plate 61 is positioned further forward
than the rear plate 42 of the battery mounting member 40.
Specifically, the first side plate 61 is positioned between the
battery 17 and the rear plate 42 in the front-back direction.
[0057] FIG. 7 is a perspective view of a detail around the battery
17 and the reducing agent tank 18. As illustrated in FIGS. 6 and 7,
a first guide member 71 is attached to the first side plate 61. The
first guide member 71 extends from the first side plate 61 toward
the reducing agent tank 18 and is sloped downward. The first guide
member 71 extends in the vehicle width direction and has
approximately the same length as the first side plate 61 in the
vehicle width direction. The first guide member 71 is formed by
bending one plate-like member (i.e., a steel plate), and has an
attachment part 72 and a sloping part 73. The attachment part 72 is
a portion fixed to the first side plate 61 and is fixed to the
first side plate 61 by welding and the like. The sloping part 73
extends from the lower edge of the attachment part 72 toward the
reducing agent tank 18. Moreover, the sloping part 73 slopes
downward toward the reducing agent tank 18. A distal end 731 (see
FIG. 9) that is the edge closest to the reducing agent tank 18 of
the sloping part 73 is positioned directly above the partition
plate 52 or closer to the reducing agent tank 18 than the partition
plate 52.
[0058] The reducing agent tank 18 for storing the reducing agent is
installed on the reducing agent tank mounting member 50. The
reducing agent tank 18 has a tank body 181 and a replenishing part
182. The tank body 181 has a substantially rectangular solid shape
and stores the reducing agent therein. The tank body 181 is
connected to the reducing agent pump 19 via a reducing agent pipe
(not shown), and the reducing agent pump 19 is connected to the
injection device 24 via another reducing agent pipe (not
shown).
[0059] The replenishing part 182 extends upward and toward the
battery 17 from an upper part of the tank body 181. The
replenishing part 182 has a tubular shape and has a lid part 183 at
the distal end thereof. When replenishing reducing agent into the
tank body 181, the lid part 183 is removed and the reducing agent
is poured into the tank body 181 via the replenishing part 182. The
upper end of the replenishing part 182 is positioned higher than
the upper plate 65 of the battery cover 60.
[0060] A tank cover 80 is attached to cover the reducing agent tank
18. As illustrated in FIG. 8, a plurality of pillar parts are fixed
to the revolving frame 26. Specifically, a first pillar part 33
extends upward from the first side frame 31. Moreover, a second
pillar part 34 extending in the vertical direction is fixed to the
center frame 30. The second pillar part 34 extends substantially
parallel to the first pillar part 33. The tank cover 80 is
supported by the plurality of pillar parts including the first
pillar part 33 and the second pillar part 34.
[0061] As illustrated in FIG. 6, the tank cover 80 has an upper
plate 81, a front plate 82, a right plate 83 (see FIG. 1), a left
plate 84, and an opening and closing part 85. The upper plate 81 is
positioned above the reducing agent tank 18. The front plate 82 is
a plate-like member that extends in the vertical direction and the
vehicle width direction, and is positioned approximately directly
above the first side plate 61 of the battery cover 60. Moreover, a
gap is formed between the front plate 82 and the first side plate
61. The right plate 83 is positioned to the right of the reducing
agent tank 18, and the left plate 84 is positioned to the left of
the reducing agent tank 18. An opening part straddling the upper
plate 81 and the front plate 82 is formed and the opening part is
covered by the opening and closing part 85. The opening and closing
part 85 is attached to the upper plate 81 in a manner that allows
opening and closing. Specifically, the opening and closing part 85
is attached to the upper plate 81 via hinges and the replenishing
part 182 is exposed by opening the opening and closing part 85.
[0062] As illustrated in FIGS. 6 to 8, the second guide member 75
is disposed below the first guide member 71 and slopes downward
toward the reducing agent tank 18. The second guide member 75
extends across the first pillar part 33 and the second pillar part
34. Specifically, the second guide member 75 is formed by bending
one plate-like member (i.e., a steel plate), and has an attachment
part 76 and a sloping part 77. The attachment part 76 is a portion
attached to the first pillar part 33 and the second pillar part 34.
The sloping part 77 is a portion that slopes upward from the upper
edge of the attachment part 76 toward the front. That is, the
sloping part 77 slopes downward toward the reducing agent tank
18.
[0063] FIG. 9 is a side cross-sectional view of a detail around the
first guide member 71 and the second guide member 75. As
illustrated in FIG. 9, the sloping part 77 of the second guide
member 75 has a first end 771 and a second end 772 as seen from the
side. The first end 771 of the second guide member 75 is positioned
closer to the battery 17 than the distal end 731 of the first guide
member 71. As a result, a portion of the sloping part 73 of the
first guide member 71 overlaps a portion of the sloping part 77 of
the second guide member 75 as seen in a plan view.
[0064] The second end 772 of the sloping part 77 in the second
guide member 75 is positioned closer to the reducing agent tank 18
than the partition plate 52 of the reducing agent tank mounting
member 50. That is, the second end 772 is positioned between the
partition plate 52 and the reducing agent tank 18 in the front-back
direction. As a result, the second end 772 is positioned above the
bottom plate 51 of the reducing agent tank mounting member 50.
[0065] A partitioning member 91 is provided so as to extend between
the second guide member 75 and the partition plate 52.
Specifically, the partitioning member 91 hangs downward from the
second end 772 side of the second guide member 75. The partitioning
member 91 is made of rubber and has a rectangular shape and the
length thereof in the vehicle width direction is substantially the
same as that of the second guide member 75. An upper end part of
the partitioning member 91 is fixed to the attachment part 76 of
the second guide member 75. The partitioning member 91 is fixed to
the surface of the attachment part 76 closer to the battery 17.
[0066] A lower end 911 of the partitioning member 91 is positioned
closer to the bottom than an upper end 521 of the partition plate
52 of the reducing agent tank mounting member 50. That is, the
lower end part of the partitioning member 91 and an upper end part
of the partition plate 52 of the reducing agent tank mounting
member 50 overlap each other in the vertical direction. The lower
end 911 of the partitioning member 91 is positioned closer to the
reducing agent tank 18 than the partition plate 52.
[0067] When replenishing the reducing agent tank 18 with the
reducing agent in the hydraulic excavator 100 configured as
described above, first a replenishing container containing reducing
agent for replenishing is placed on the upper plate 65 (FIG. 6) of
the battery cover 60. The operator stands on the upper plate 65 of
the battery cover 60 to perform the replenishing of the reducing
agent. Next, the operator opens the opening and closing part 85 of
the tank cover 80 to expose the replenishing part 182 of the
reducing agent tank 18. The operator removes the lid part 183 and
pours the reducing agent into the reducing agent tank 18 from the
replenishing container.
(Characteristics)
[0068] The hydraulic excavator 100 according to the present
embodiment has the following features.
[0069] (1) When the reducing agent is spilled on top of the upper
plate 65 on the battery cover 60 during an operation for
replenishing the reducing agent as described above, the reducing
agent tends to spill on a portion of the upper plate 65 close to
the reducing agent tank 18, that is, on the rear part of the upper
plate 65. As a result, when the reducing agent is spilled on the
upper plate 65 of the battery cover 60, the spilled reducing agent
flows from the upper plate 65 downward along the first side plate
61 as indicated by the chain double-dashed line arrow in FIG. 6.
The reducing agent flowing downward along the first side plate 61
then flows along the first guide member 71 and drips down from the
distal end 731 of the first guide member 71 toward the second guide
member 75. The reducing agent that flows further downward along the
second guide member 75 then drips downward from the second end 772
of the second guide member 75. The reducing agent that drips down
from the second end 772 of the second guide member 75 drips down to
the reducing agent tank mounting member 50 and does not flow toward
the battery 17. As a result, adherence of the reducing agent on the
battery 17 can be prevented.
[0070] (2) The partitioning member 91 is installed so as to extend
between the second guide member 75 and the partition plate 52
whereby the reducing agent that drips down onto the reducing agent
tank mounting member 50 is prevented from splashing toward the
battery 17.
[0071] (3) Since the partitioning member 91 is made of rubber,
distortion of the partitioning member 91 does not occur and the
weight of the partitioning member 91 can be reduced.
Modified Examples
[0072] While an embodiment of the present invention has been
described above, the present invention is not limited to the
embodiment and the following modifications may be made within the
scope of the present invention.
Modified Example 1
[0073] While the distal end 731 of the first guide member 71 is
described as being positioned closer to the reducing agent tank 18
than the partition plate 52 in the above embodiment, the
positioning of the distal end 731 is not limited in this way. That
is, the distal end 731 of the first guide member 71 may be
positioned closer to the battery 17 than the partition plate
52.
Modified Example 2
[0074] While the first guide member 71 and the second guide member
75 are installed and the reducing agent is guided toward the
reducing agent tank mounting member 50 by the two guide members in
the above embodiment, the second guide member 75 may be omitted.
For example, a hydraulic excavator according to a second modified
example is not provided with the second guide member and the
partitioning member as illustrated in FIG. 10. The distal end 731
of the first guide member 71 is positioned closer to the reducing
agent tank 18 than the partition plate 52. The first guide member
71 is preferably positioned lower than the installed position in
the above embodiment so that the reducing agent that drips down
from the distal end of the first guide member 71 drips down onto
the reducing agent tank mounting member 50 more reliably.
Modified Example 3
[0075] While an example of a hydraulic excavator applicable to the
present invention has been described in the above embodiment, the
work vehicle applicable to the present invention is not limited to
a hydraulic excavator. For example, a bulldozer, a wheel loader, or
a motor grader and the like may be applied to the present
invention.
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