Work vehicle

Abstract

To provide a work vehicle which allows an operator to discriminate between an oil supply port and a supply port and can achieve compactification of a space for disposing the supply port.SOLUTION: A work vehicle includes a vehicle body frame, a pair of travel devices, and a tank. The travel devices, making the pair, are supported so as to face each other in a width direction by the vehicle body frame and respectively configured to drive the vehicle body frame in a front-rear direction. The tank is supported by the vehicle body frame. The tank includes a tank body, a supply port, and a filter. The tank body is configured to store a liquid. The supply port protrudes from the tank body in an upward direction which is perpendicular to the width direction and the front-rear direction and toward the vehicle body frame from a ground. The filter is provided in the tank body to be connected to the supply port so as to capture foreign matters which enter from the supply port. The filter has a cylindrical shape centered on a center axis and has a through hole that extends along the center axis. The center axis is inclined from the upper direction toward a first side which is one side of the width direction.SELECTED DRAWING: Figure 10

Description

[Technical Field]

[0001] The present invention relates to a work vehicle. [Background technology]

[0002] Patent Document 1 describes a work vehicle having both a fuel tank and a reducing agent tank. In this work vehicle, a fuel filler opening is provided on one of the left and right sides of the vehicle body, tilted upward, and a reducing agent supply opening is provided on the other of the left and right sides of the vehicle body, tilted upward. Patent Document 2 describes a tank having a cylindrical section protruding diagonally upward from the tank, with an inner cylindrical element inside that can tilt relative to the cylindrical section. This inner cylindrical element has a shape complementary to the nozzle tip, and may include a filter inside the inner cylindrical element. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent No. 5336646 [Patent Document 2] Patent No. 6314230 Summary of the Invention [Problem to be solved by the invention]

[0004] An object of the technology disclosed in the present application is to provide a work vehicle that can easily replenish urea water or fuel, whether the urea water or fuel is replenished using a bellows-shaped nozzle from a plastic tank containing urea water or fuel, or whether the urea water or fuel is replenished using a nozzle with a bent tip like a gasoline fuel nozzle. [Means for solving the problem]

[0005] A work vehicle according to a first aspect of the present disclosure includes a body frame, a pair of travelling devices, and a tank. The pair of travelling devices are supported by the body frame so as to face each other in the width direction, and each is configured to drive the body frame in the front-rear direction. The tank is supported by the body frame. The tank includes a tank body, a refill port, and a filter. The tank body is configured to store liquid. The refill port is perpendicular to the width direction and the front-rear direction from the tank body, and protrudes from the tank body in an upward direction from the ground toward the body frame. The filter is connected to the refill port inside the tank body and is configured to capture foreign matter entering through the refill port. The filter has a cylindrical shape centered on a central axis and has a through hole along the central axis. The central axis is inclined from the upward direction to a first side in one of the width directions.

[0006] A work vehicle according to a second aspect of the present disclosure includes a body frame, a pair of travelling devices, a first tank, and a second tank. The pair of travelling devices are supported by the body frame so as to face each other in the width direction, and each is configured to drive the body frame in the front-to-rear direction. The first tank is supported by the body frame at a position offset from the center of the body frame in the width direction to a first side in the width direction. The second tank is supported by the body frame at a position offset from the center of the body frame to a second side in the other width direction. The first tank includes a first tank body and a first refill port. The first tank body is configured to store a first liquid. The first refill port protrudes from the first tank body in an upward direction from the ground toward the body frame, perpendicular to the width direction and the front-to-rear direction. The second tank includes a second tank body and a second refill port. The second tank body is configured to store a second liquid. The second supply port protrudes from the second tank body in a direction inclined from above to the second side. [Effects of the Invention]

[0007] According to the technology disclosed in the present application, it is possible to provide a work vehicle that can easily replenish urea water or fuel, whether the urea water or fuel is replenished using a bellows-shaped nozzle from a plastic tank containing urea water or fuel, or whether the urea water or fuel is replenished using a nozzle with a bent tip like a gasoline fuel nozzle. [Brief explanation of the drawings]

[0008] [Figure 1] FIG. 1 is a left side view of the work vehicle. [Figure 2] FIG. 2 is a right side view of the work vehicle. [Figure 3] FIG. 3 is a top view of the work vehicle. [Figure 4] Figure 4 is an enlarged view of the first tank and its surroundings. [Figure 5] FIG. 5 is a top view of the first tank. [Figure 6] FIG. 6 is a front view of the first tank. [Figure 7] FIG. 7 is a cross-sectional view taken along the line VII-VII′ in FIG. [Figure 8] FIG. 8 is a perspective view of the filter. [Figure 9] FIG. 9 is a side view of the first supply port. [Figure 10] FIG. 10 is a cross-sectional view taken along the line XX' in FIG. [Figure 11] FIG. 11 is a top view of the first supply port. [Figure 12] FIG. 12 is a partially enlarged view of the work vehicle around the second tank. [Figure 13] FIG. 13 is a reference diagram showing the state when the nozzle is inserted into the first supply port. DETAILED DESCRIPTION OF THE INVENTION

[0009] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will now be described with reference to the accompanying drawings, in which like reference numerals indicate corresponding or identical components throughout the drawings. First Embodiment

[0010] 1 to 3, a work vehicle 1 includes a body frame 2, a pair of traveling devices 3, a working device 4, and a cabin 5. The body frame 2 supports the pair of traveling devices 3, the working device 4, and the cabin 5. The pair of traveling devices 3 are rotatably supported on the body frame 2, and are each configured to drive the body frame 2 in the longitudinal direction. In the illustrated embodiment, the pair of traveling devices 3 are track-type traveling devices. Therefore, each of the pair of traveling devices 3 includes a driving wheel 31, driven wheels 32 and 33, and a roller 34. However, the pair of traveling devices 3 is not limited to track-type traveling devices. The traveling device 3 may be, for example, a front-wheel / rear-wheel traveling device, or a traveling device having front wheels and rear crawlers. The working device 4 includes work equipment (a bucket) 41 at the distal end of the working device 4. The proximal end of the working device 4 is attached to the body frame 2. The work device 4 includes a pair of arm assemblies 42 for rotatably supporting a bucket 41 via a bucket pivot shaft 43. Each of the pair of arm assemblies 42 includes a lift link 44 and an arm 45.

[0011] The lift link 44 is rotatable relative to the vehicle body frame 2 about a fulcrum shaft 46. The arm 45 is rotatable relative to the lift link 44 about a joint shaft 47. The work device 4 further includes a plurality of arm cylinders 48 and at least one equipment cylinder 49. Each of the plurality of arm cylinders 48 is rotatably connected to the vehicle body frame 2 and the arm 45 and moves the lift link 44 and the arm 45 to raise and lower the bucket 41. The at least one equipment cylinder 49 is configured to tilt the bucket 41.

[0012] 1 to 3, the cabin 5 is attached to the vehicle body frame 2. In FIGS. 1 to 3, a common rotational axis A defined by the rotating shafts RSL and RSR is XC The cabin 5 can be switched between a closed state in which it is placed on the body frame 2 and an open state in which it is separated from the body frame 2 by rotating about the rotating shafts RSL and RSR.

[0013] In the embodiment of the present application, FB (Forward direction D F / backward D B ) means the front-rear direction (forward direction / rear direction) as seen from the driver seated in the driver's seat 52 of the cabin 5. L , right direction D R , width direction D W The upper and lower directions respectively refer to the left, right, left and right directions as seen from the driver's perspective. U , downward D D , height direction D H The downward direction D means the upward, downward, and height directions as seen from the driver. D is the forward direction D F , posterior direction D B , and width direction D W The upward direction D is perpendicular to the direction from the body frame 2 to the ground. U is the height direction D H Downward direction D D The front-rear, left-right (width), and up-down (height) directions of the work vehicle 1 respectively correspond to the front-rear, left-right (width), and up-down (height) directions as seen from the driver.

[0014] The pair of traveling devices 3 are arranged in the width direction D W The work vehicle 1 faces the vehicle body frame 2 in the width direction D WThe pair of traveling devices 3 are generally symmetrical with respect to the vehicle body central plane M, which is located in the center of the vehicle. Of the pair of traveling devices 3, the traveling device 3 provided on the left side of the vehicle body central plane M is shown as the first traveling device 3L, and the traveling device 3 provided on the right side of the vehicle body central plane M is shown as the second traveling device 3R. Of the pair of arm assemblies 42, the arm assembly 42 provided on the left side of the vehicle body central plane M is shown as the first arm assembly 42L, and the arm assembly 42 provided on the right side of the vehicle body central plane M is shown as the second arm assembly 42R. The lift link 44 provided on the left side of the vehicle body central plane M is shown as the first lift link 44L, and the lift link 44 provided on the right side of the vehicle body central plane M is shown as the second lift link 44R. The arm 45 provided on the left side of the vehicle body central plane M is shown as the first arm 45L, and the arm 45 provided on the right side of the vehicle body central plane M is shown as the second arm 45R. The fulcrum shaft 46 provided on the left side of the vehicle body central plane M is shown as the first fulcrum shaft 46L, and the fulcrum shaft 46 provided on the right side of the vehicle body central plane M is shown as the second fulcrum shaft 46R. The joint shaft 47 provided on the left side of the vehicle body central plane M is shown as the first joint shaft 47L, and the joint shaft 47 provided on the right side of the vehicle body central plane M is shown as the second joint shaft 47R.

[0015] 1 to 3, the work vehicle 1 further includes an engine 6 provided on the body frame 2. The engine 6 is configured to provide driving force to the traveling device 3 and the working device 4. The engine 6 extends in the width direction D of the work vehicle 1. W and is provided between the pair of arm assemblies 42. The work vehicle 1 is further provided with a bonnet cover 54 for covering the engine 6. The work vehicle 1 is further provided with a rear bonnet cover 56 provided at the rear end of the body frame 2. The rear bonnet cover 56 can be opened and closed, allowing a maintenance technician to perform maintenance work on the engine 6, etc.

[0016] 1 to 3, the work vehicle 1 is equipped with a first tank 7 and a second tank 9. Referring to FIG. 2, the first tank 7 is disposed in the width direction D of the body frame 2. W From the center (vehicle body center plane M) to the width direction DW The second tank 9 is supported by the body frame 2 at a position shifted to one of the first sides. W In the above embodiment, the first side is the left direction D L The second side is the right direction D R However, the first side is to the right D R The second side is the left direction D L may be.

[0017] Referring to FIG. 1, a portion of the first tank 7 is covered by an upper cover 57. The upper cover 57 has a recess 58, which is configured to be openable and closable by an opening / closing door 59. FIG. 4 is an enlarged view of the periphery of the first tank 7 in FIG. 1. The opening / closing door 59 is not shown in FIG. 4. Referring to FIG. 4, the first tank 7 includes a first tank body 60, a first refill port 70, and a first plug 62. The first tank body 60 is configured to store a first liquid. The first liquid is preferably urea water. The first refill port 70 is engageable with the first plug 62. The first plug 62 is configured to open and close the first refill port 70.

[0018] FIG. 5 is a top view of the first tank 7. FIG. 6 is a front view of the first tank 7. In FIGS. 5 and 6, the upper cover 57 is indicated by dotted lines. In FIG. 6, the first plug 62 is not shown. Referring to FIG. 6, the first tank 7 is supported by the vehicle body frame 2. Referring to FIGS. 5 and 6, the first tank 7 is connected to the upper cover 57 so that the first plug 62 and a portion of the first refill port 70 that engages with the first plug 62 protrude into the recess 58 of the upper cover 57. The upper cover 57 covers the upper part of the first tank body 60 so that the surface of the first tank body 60 is not visible from inside the recess 58 of the upper cover 57. Referring to FIG. 5 , a hose 64 and the like for sending the first liquid to a selective catalytic reduction device (not shown) are connected to the first tank body 60, but the upper cover 57 covers the side of the first tank body 60 so that the hose 64 and the like cannot be seen from inside the recess 58 of the upper cover 57.

[0019] FIG. 7 is a cross-sectional view taken along the line VII-VII' in FIG. 5. Referring to FIG. 7, the first plug 62 includes a first protrusion 62p that can engage with the first refill port 70. Referring to FIGS. 6 and 7, the first refill port 70 includes a second protrusion 70p that can engage with the first protrusion 62p. In the examples of FIGS. 6 and 7, the first protrusion 62p is a female-threaded protrusion, and the second protrusion 70p is a male-threaded protrusion. However, one of the first protrusion 62p and the second protrusion 70p may be a locking claw, one of the first protrusion 62p and the second protrusion 70p may be a claw receiver that receives the locking claw.

[0020] Referring to Fig. 7, the work vehicle 1 further includes a filter 80 that is connected to the first refill port 70 inside the first tank body 60 and is configured to capture foreign matter entering through the first refill port 70. This foreign matter refers to dirt, mud, and the like that enters through the first refill port 70. Fig. 8 is a perspective view of the filter 80. Referring to Fig. 8, the filter 80 is oriented along a central axis A X1 The filter body 81 has a substantially cylindrical shape with a central axis A X1 The filter 80 has a through hole 83 extending from a side surface 82 of a cylindrical filter body 81 to a central axis A. X1 The filter 80 has a flange 84 extending radially from the side 82 to the central axis A. X1 The first protrusion 85 projects radially relative to the first protrusion 85.

[0021] Fig. 9 is a side view of the first supply port 70. Fig. 10 is a cross-sectional view taken along the line X-X' in Fig. 5. Referring to Figs. 9 and 10, the first supply port 70 is positioned in the width direction D from the first tank body 60. W and forward / backward direction D FB and is perpendicular to the ground and faces the vehicle frame 2 in the upward direction D. U5, 7, 9, and 10, the first supply port 70 has a supply port main body 70m and a flange 71. The supply port main body 70m is spaced apart from the first tank main body 60 in the height direction D when connected to the first tank main body 60. H Central axis A extending along X2 The flange 71 extends from the supply port body 70m to the central axis A X1 The flange 71 extends radially relative to the first tank body 60. The flange 71 is connected to the first tank body 60 by heat welding.

[0022] Referring to FIG. 10, the central axis A of the filter 80 X1 is the upward direction D U From width direction D W In this embodiment, the first side is inclined at an angle α in the left direction D L When the first tank 7 and the second tank 9 are arranged in reverse left and right, the first side is the right direction D R The central axis A X1 and central axis A X2 The first supply port 70 is formed so that the central axis A is positioned on the same plane. X1 and central axis A X2 This shows that the lines are on the same line.

[0023] FIG. 10 shows the filter 80 along the central axis A X1 When the filter 80 is moved along the central axis A of the flange 84 of the filter 80, X1 9, the inner diameter D of the first supply port 70 is the same as that of the filter 80 when the filter 80 is moved from the central axis A to the central axis A. X1 The flange 84 has a size such that it does not come into contact with the inner wall 70w of the first supply port 70 when the flange 84 is moved along the inner wall 70w.

[0024] 11 is a top view of the first supply port 70. Referring to FIGS. 7, 10, and 11, the first supply port 70 has a receiving portion 72 configured to support the flange 84. The receiving portion 72 includes a support surface 73, a restriction surface 74, and second protrusions 75a to 75d. The support surface 73 is configured to support the flange 84 relative to the central axis A. X1 Axial direction along D AX The restriction surface 74 is configured to surround the side surface 82 of the filter body 81. The restriction surface 74 is configured to be closer to the central axis A as it is farther away from the support surface 73. X1 The axial direction of the slit 14 is configured to extend radially relative to the slit 14.

[0025] The second protrusions 75a to 75d protrude from the restriction surface 74 toward the inside of an opening 74op (see FIG. 11) defined by the restriction surface 74. The second protrusions 75a to 75d protrude to an extent that they can engage with the first protrusions 85 of the filter 80. In other words, the first protrusions 85 of the filter 80 can engage with the second protrusions 75a to 75d. Referring to the enlarged view of region A in FIG. 11 and FIG. 14, the second protrusions 75a to 75d each have a substantially triangular pyramid shape and are spaced apart from one another by a central axis A. X1 7, 10, and 11, and may have any shape that can engage with first protrusion 85.

[0026] FIG. 12 is a partially enlarged view of the work vehicle 1 around the second tank 9. In order to clarify the structure of the second tank 9, FIG. 9 omits illustration of a part of the body frame 2, the second traveling device 3R, the second arm assembly 42R, etc. Referring to FIG. 12, the second tank 9 comprises a second tank body 90, a second refill port 91, and a second plug 92. The second tank body 90 is configured to store a second liquid. The second liquid is preferably fuel. The second refill port 91 is provided in an upward direction D from the second tank body 90. U The second supply port 91 protrudes from the second tank body 90 in a direction inclined toward the second side from the vertical direction D H The second supply port 91 is connected to the second tank body 90 via a relay pipe 93 extending from the center axis A X3It has a roughly cylindrical shape with the center at A. X3 is the upward direction D U In this embodiment, the second side is in the right direction D R When the first tank 7 and the second tank 9 are arranged in reverse left and right, the second side is in the left direction D L may be. <Effects of the embodiment>

[0027] In the work vehicle 1 according to this embodiment, the first tank 7 is U The first tank body 60 includes a first supply port 70 protruding from the first tank body 60, and a filter 80. The filter 80 is aligned along the central axis A X1 It has a cylindrical shape with its center at the central axis A X1 The first supply port 70 has a through hole 83 extending in the upward direction D U Since the central axis A protrudes from the center of the urea water tank, when the bellows-shaped nozzle is used to supply water from a plastic tank containing urea water, the nozzle can be allowed to drip naturally, making it easy to supply urea water. X1 is the upward direction D U From width direction D W 13, when urea water is supplied using a nozzle with a bent tip like a gasoline fuel nozzle, the nozzle can be stably fixed by hooking the tip of the nozzle onto the filter 80 and the base end of the nozzle onto the first supply port 70. In order to achieve this, the inner diameter D F is the outer diameter of the nozzle D N The length of the filter is greater than 80 L. F The length of the second tank 9 is preferably such that the base end of the nozzle can be hooked. U From width direction D W The second tank body 90 is provided with a second replenishing port 91 that protrudes from the second tank body 90 in a direction inclined toward the other second side of the first and second replenishing ports 70 and 91. This makes it even easier to distinguish between the first replenishing port 70 (urea water replenishing port) and the second replenishing port 91 (fuel filler port). <Modification>

[0028] In the above-described embodiment, the first tank 7, the first tank body 60, the first replenishing port 70, the first plug 62, and the first liquid may be simply referred to as the tank 7, the tank body 60, the replenishing port 70, the plug 62, and the liquid, respectively. Also, in the above-described embodiment, the first liquid is urea water and the second liquid is fuel, but the first liquid may be fuel and the second liquid may be urea water.

[0029] In this application, the term "comprises" and its derivatives are open-ended terms that describe the presence of elements and do not exclude the presence of other elements not listed. This also applies to the terms "have," "include," and their derivatives.

[0030] The terms "member," "part," "element," "body," and "structure" may have multiple meanings, such as a single part or multiple parts.

[0031] Ordinal numbers such as "first" and "second" are merely terms used to identify components and do not have any other meaning (e.g., a particular order). For example, the presence of a "first element" does not imply the presence of a "second element," and the presence of a "second element" does not imply the presence of a "first element."

[0032] Words expressing degrees, such as "substantially," "about," and "approximately," can mean a reasonable deviation that does not significantly change the final result, unless otherwise specified in the embodiment. All numerical values ​​described in this application can be interpreted to include words such as "substantially," "about," and "approximately."

[0033] In this application, the phrase "at least one of A and B" should be interpreted to include A only, B only, and both A and B.

[0034] It is apparent that various changes and modifications of the present invention are possible in light of the above disclosure, and therefore, the present invention may be practiced otherwise than as specifically disclosed herein without departing from the spirit of the present invention.

Claims

1. The body frame and a pair of traveling devices supported by the body frame so as to face each other in the width direction, and each configured to drive the body frame in the front-rear direction; a tank supported by the vehicle body frame; Equipped with The tank is a tank body configured to store a liquid; a supply port that protrudes from the tank body in an upward direction from the ground toward the vehicle body frame, the supply port being perpendicular to the width direction and the front-rear direction; a filter connected to the supply port inside the tank body and configured to capture foreign matter entering through the supply port; Equipped with The filter has a cylindrical shape centered on a central axis line and has a through hole along the central axis line, The central axis is inclined from the upward direction toward a first side in the width direction. Work vehicle.

2. a plug including a first protrusion engageable with the refill port; the supply port includes a second protrusion engageable with the first protrusion; The work vehicle according to claim 1 .

3. the filter has a flange extending from a side surface of the cylindrical shape in a radial direction relative to the central axis, The refill port has a receiving portion configured to support the flange. The work vehicle according to claim 1 .

4. the filter has a flange extending from a side surface of the cylindrical shape in a radial direction relative to the central axis, The refill port has a receiving portion configured to support the flange. The work vehicle according to claim 2 .

5. The inner diameter of the supply port is large enough that the flange does not come into contact with the inner wall of the supply port when the filter is moved along the central axis. The work vehicle according to claim 3 .

6. The inner diameter of the supply port is large enough that the flange does not come into contact with the inner wall of the supply port when the filter is moved along the central axis. The work vehicle according to claim 4.

7. The receiving portion is a support surface that supports the flange in an axial direction along the central axis; a restriction surface configured to surround the side surface of the filter; Equipped with the filter has a protrusion protruding from the side surface in a radial direction relative to the central axis, the receiving portion includes a second protrusion protruding from the restriction surface toward an inside of the opening defined by the restriction surface; the ridge is engageable with the second ridge; The work vehicle according to claim 3 .

8. The receiving portion is a support surface that supports the flange in an axial direction along the central axis; a restriction surface configured to surround the side surface of the filter; Equipped with the filter has a first protrusion protruding from the side surface in a radial direction relative to the central axis, the receiving portion includes a second protrusion protruding from the restriction surface toward an inside of the opening defined by the restriction surface; the first ridge is engageable with the second ridge; The work vehicle according to claim 4.

9. The receiving portion is a support surface that supports the flange in an axial direction along the central axis; a restriction surface configured to surround the side surface of the filter; Equipped with the filter has a protrusion protruding from the side surface in a radial direction relative to the central axis, the receiving portion includes a second protrusion protruding from the restriction surface toward an inside of the opening defined by the restriction surface; the ridge is engageable with the second ridge; The work vehicle according to claim 5.

10. The receiving portion is a support surface that supports the flange in an axial direction along the central axis; a restriction surface configured to surround the side surface of the filter; Equipped with the filter has a protrusion protruding from the side surface in a radial direction relative to the central axis, the receiving portion includes a second protrusion protruding from the restriction surface toward an inside of the opening defined by the restriction surface; the ridge is engageable with the second ridge; The work vehicle according to claim 6.

11. the tank is disposed at a position shifted toward the first side from the center of the body frame in the width direction. A work vehicle according to any one of claims 1 to 10.

12. The body frame and a pair of traveling devices supported by the body frame so as to face each other in the width direction, and each configured to drive the body frame in the front-rear direction; a first tank supported by the body frame at a position shifted from a center of the body frame in the width direction toward a first side in the width direction; a second tank supported by the body frame at a position shifted from the center of the body frame to a second side on the other side in the width direction; Equipped with The first tank is a first tank body configured to store a first liquid; a first supply port that protrudes from the first tank body in an upward direction from the ground toward the body frame, the first supply port being perpendicular to the width direction and the front-rear direction; Equipped with The second tank is a second tank body configured to store a second liquid; a second supply port protruding from the second tank body in a direction inclined from the upward direction toward the second side; Equipped with Work vehicle.

13. The first liquid is urea water, and the second liquid is fuel. The work vehicle according to claim 12.

14. The first tank is the tank according to any one of claims 1 to 10. The work vehicle according to claim 12.

15. The first tank is the tank according to any one of claims 1 to 10. The work vehicle according to claim 13.

16. The liquid is urea water. A work vehicle according to any one of claims 1 to 10.

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