Work vehicles

Abstract

The present invention provides a working vehicle that can improve the ride-on and off-load performance. The working vehicle (1) involved in the embodiment comprises: a transmission case (6) that accommodates a transmission (6a) that transmits power from an engine (E) to a driving wheel and supports a vehicle body (10); a fuel tank (11) that stores fuel supplied to the engine (E); a lower step (26) that is fixed to the side of the transmission case (6); and an upper step (21) that is formed by a part of the fuel tank, the lower step (26) being arranged at a position lower than the upper step (21), and the upper step (21) and the lower step (26) being formed in a stepped shape.

Description

Technical Field

[0001] The invention relates to a working vehicle. Background Art

[0002] At present, in working vehicles such as tractors, it is known that a fuel tank provided between the front wheels and the rear wheels is used for placing the feet of passengers when getting on and off the vehicle. In such working vehicles, for example, in order to increase the capacity of the fuel tank, the fuel tank is provided in a stepped shape with the lower portion extending outward (for example, see Patent Document 1).

[0003] Patent Document 1: Japanese Patent Application Publication No. 2006-248490

[0004] However, in the above-mentioned conventional working vehicles, the weight of the fuel tank increases along with the weight of the stored fuel, so the fuel tank for passengers to place their feet must be more firmly installed. In addition, when driving on a road with poor road conditions such as a planting field, the height of the fuel tank from the ground becomes high, making it difficult for passengers to get on and off. As described above, the conventional working vehicles have poor rideability. Summary of the invention

[0005] The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide a work vehicle capable of improving the riding performance.

[0006] In order to solve the above-mentioned problems and achieve the purpose, the working vehicle described in Technical Solution 1 is characterized in that the working vehicle has: a transmission body, which accommodates a transmission that transmits power from an engine to a drive wheel and supports a vehicle body; a fuel tank, which stores fuel supplied to the engine; a lower step portion, which is fixed to the transmission body side; and an upper step portion, which is composed of a part of the fuel tank, and the lower step portion is arranged at a position lower than the upper step portion, and the upper step portion and the lower step portion are formed in a stepped shape.

[0007] The working vehicle according to claim 2 is the working vehicle according to claim 1, wherein the lower step portion is attached to a lower fuel tank bracket that supports the fuel tank from below.

[0008] The working vehicle described in claim 3 is characterized in that, in the working vehicle described in claim 2, the upper step portion has: a plurality of holes for preventing slipping; and a groove portion that discharges dropped objects falling from the holes to the outside.

[0009] The working vehicle described in claim 4 is characterized in that, in the working vehicle described in claim 3, an exhaust gas purification device for purifying the exhaust gas exhausted from the engine is arranged on the fuel tank.

[0010] The working vehicle described in Technical Solution 5 is characterized in that, in the working vehicle described in any one of Technical Solutions 1 to 4, the working vehicle has: an upper fuel tank bracket, which supports the fuel tank from above; and a tool box fixing part, which is arranged on the upper fuel tank bracket and fixes the tool box above the fuel tank so that it can be loaded and unloaded.

[0011] The work vehicle described in Technical Solution 6 is characterized in that, in the work vehicle described in Technical Solution 5, the toolbox is in the shape of a rectangular box and has: a pair of long-side forming surfaces, which form long sides when viewed from above; and a pair of short-side forming surfaces, which form short sides when viewed from above, and the toolbox fixing portion has: a first side surface and a second side surface, which are respectively facing the pair of long-side forming surfaces when the toolbox is stored; a third side surface, which is facing any one of the pair of short-side forming surfaces when the toolbox is stored; an opening; a force-applying portion, which is arranged on the third side surface and applies force to the toolbox toward the opening; and a locking portion, which is arranged on the opening and locks the toolbox to which the force is applied by the force-applying portion.

[0012] The working vehicle described in Technical Solution 7 is characterized in that, in the working vehicle described in Technical Solution 6, the locking portion of the toolbox fixing portion has a protrusion, and the toolbox has a receiving portion, which protrudes from the short side forming surface and engages with the protrusion when the toolbox is stored.

[0013] According to the invention described in claim 1, by arranging the lower step portion at a position lower than the upper step portion, it is easy to get on and off the vehicle body, thereby improving the ease of getting on and off.

[0014] According to the invention described in claim 2, since the fuel tank is supported by the lower tank bracket, the fuel tank on which the passengers place their feet when getting on or off the vehicle can be firmly attached to the vehicle body.

[0015] According to the invention described in claim 3, in addition to the effects of the invention described in claim 2, when a passenger places his feet on the upper step portion, even if mud or the like attached to the passenger's feet falls from the hole of the anti-slip plate to the upper surface of the fuel tank, it can easily fall to the outside of the upper surface through the groove portion, thereby improving the cleanability.

[0016] According to the invention described in claim 4, in addition to the effects of the invention described in claim 3, the capacity of the fuel tank can be ensured, and the space for arranging the exhaust gas purification device can be ensured. In this case, it is not necessary to support the exhaust gas purification device from below, and the number of parts can be reduced.

[0017] According to the invention described in claim 5, in addition to the effects of the invention described in any one of claims 1 to 4, it is possible to ensure a space for installing the tool box and to support and fix the tool box at a position with good usability.

[0018] According to the invention described in claim 6, in addition to the effects of the invention described in claim 5, the tool box applied by the force applying portion is locked by the locking portion, so that the tool box can be fixed to the tool box fixing portion in the state where the tool box is stored. Thus, even if vibration occurs during the travel of the working vehicle, the tool box can be stably supported.

[0019] According to the invention described in claim 7, in addition to the effects of the invention described in claim 6, the tool box can be supported and fixed to the tool box fixing portion by engaging the hook-shaped protrusion with the plate-shaped receiving portion, thereby stably supporting the tool box. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is an explanatory diagram of a work vehicle according to the embodiment.

[0021] Figure 2A This is a perspective view showing a step portion on the left side of the machine body (part 1).

[0022] Figure 2B This is a perspective view showing the step portion on the left side of the machine body (part 2).

[0023] Figure 3 It is a perspective view showing the fuel tank bracket on the left side of the machine body.

[0024] Figure 4A This is a perspective view showing a step portion on the right side of the machine body (part 1).

[0025] Figure 4B This is a perspective view showing the step portion on the right side of the machine body (part 2).

[0026] Figure 5 It is a perspective view showing the fuel tank bracket on the right side of the machine body.

[0027] Figure 6 It is a perspective view showing the storage state of the tool box.

[0028] Figure 7 is a perspective view showing a tool box.

[0029] Figure 8 It is a perspective view showing a tool box fixing portion.

[0030] Fig. 9 is a perspective view showing the rear cockpit mounting bracket.

[0031] Description of symbols

[0032] 1: working vehicle (tractor); 2: body frame; 3: engine hood; 4: front wheel; 5: rear wheel; 6: gearbox; 6a: transmission; 7: cockpit; 8: control seat; 9: steering wheel; 10: vehicle body; 11: fuel tank; 20: step; 21: upper step; 22: flat surface; 23: groove; 23a: groove; 23b: connecting groove; 24: anti-skid plate; 24a: hole; 25a: threaded hole component; 25b: fastener; 26: lower step; 27: front flat surface; 28: SCR bracket; 30: fuel tank bracket; 31: upper fuel tank bracket; 32: connecting part; 33: upper support; 34: lower fuel tank bracket; 35: lower support; 40: exhaust gas purification device : position; 41: SCR; 50: urea water tank; 51: urea water tank bracket; 60: tool box; 61: long side forming surface; 62: short side forming surface; 63: bottom surface; 64: cover surface; 64a: hinge; 65: handle; 66: receiving part; 70: tool box fixing part; 71: 1st side; 72: 2nd side; 73: 3rd side; 74: opening; 75: supporting surface; 76: force applying part; 77: locking part; 77a: protrusion; 78: guiding part; 80: cockpit fixing frame; 81: front cockpit fixing frame; 82: rear cockpit fixing frame; 82a: fixing part; 82b: mounting bolt; 83: rear axle housing; 100: engine ECU; 150: PTO shaft; E: engine. DETAILED DESCRIPTION

[0033] Hereinafter, an embodiment of the working vehicle disclosed in the present invention will be described in detail with reference to the accompanying drawings. In addition, the present invention is not limited to the embodiment shown below.

[0034] <Overall structure of working vehicle (tractor) 1>

[0035] First, refer to Figure 1 , the overall structure of the work vehicle 1 will be described. Figure 1 1 is an explanatory diagram of a work vehicle 1 according to the embodiment, and is a schematic left side view of the work vehicle 1. In addition, the work vehicle 1 is described below by taking a tractor as an example. The tractor 1 as the work vehicle is an agricultural tractor that works in a planting field or the like while freely running.

[0036] In the following, the front-rear direction refers to the direction of travel of the tractor 1 when it is moving straight, and the front side of the direction of travel is defined as "front", and the rear side is defined as "rear". The direction of travel of the tractor 1 refers to the direction from the operating seat 8 described later toward the steering wheel 9 when it is moving straight (see Figure 1 ).

[0037] The left-right direction refers to a direction that is horizontally orthogonal to the front-rear direction. In the following, the left-right direction is defined toward the "front" side. That is, when the operator (also referred to as the operator) of the tractor 1 is seated on the operating seat 8 and facing forward, the left hand side is "left" and the right hand side is "right".

[0038] The up-down direction is a vertical direction. The front-back direction, the left-right direction, and the up-down direction are perpendicular to each other. In addition, each direction is defined for the convenience of explanation, and these directions are not used to limit the present invention. In addition, the tractor 1 is sometimes referred to as a "machine body" below.

[0039] like Figure 1 As shown, the tractor 1 has a machine frame 2, an engine E, an engine hood 3, front wheels 4, rear wheels 5, and a transmission case 6. The machine frame 2 is a frame that supports the machine as a whole. The engine E is a driving source for the machine, and is a heat engine such as a diesel engine or a gasoline engine. The engine E is housed inside the engine room.

[0040] The engine hood 3 is provided at the front part of the machine body so as to be openable and closable. The engine hood 3 covers the engine E accommodated in the engine room. The engine hood 3 forms the engine room in a closed state.

[0041] The front wheels 4 are a pair of left and right wheels, which are mainly used as wheels for steering, i.e., steering wheels. The rear wheels 5 are a pair of left and right wheels, which are mainly used as wheels for driving, i.e., driving wheels. In addition, the tractor 1 may be configured so that, by switching the power transmitted from the engine E, it is possible to switch between two-wheel drive (2WD) for driving the rear wheels 5 and four-wheel drive (4WD) for driving both the front wheels 4 and the rear wheels 5. In this case, the driving wheels are both the front wheels 4 and the rear wheels 5.

[0042] The transmission case 6 is provided at the lower part of the machine frame 2. The transmission case 6 accommodates the transmission 6a therein, and the rotational power output from the engine E accommodated in the engine room is appropriately decelerated by the transmission 6a and transmitted to the rear wheel 5 as the driving wheel. In addition, the transmission case 6 supports the upper half of the tractor 1 including the machine frame 2, that is, the vehicle body 10, from below.

[0043] The tractor 1 also includes a cab 7. The cab 7 forms an operating space and includes a control seat 8 and a steering wheel 9 therein. The control seat 8 is a seat for the operator. When the front wheels 4, which are steering wheels, are steered, the operator operates the steering wheel 9. In front of the steering wheel 9, a display unit (instrument panel) is provided for displaying various information.

[0044] In addition, inside the cockpit 7, for example, in front of the control seat 8, a forward and reverse operating lever, an accelerator lever, etc. are provided. In addition, inside the cockpit 7, for example, on the right side of the control seat 8, a main gear lever, a sub-gear lever, etc. are provided. In addition, inside the cockpit 7, for example, below the steering wheel 9, an accelerator pedal, a brake pedal, a clutch pedal, etc. are provided.

[0045] In addition, the tractor 1 has a PTO (Power Take-off) shaft 150. The PTO shaft 150 protrudes rearward from the transmission case 6. The PTO shaft 150 transmits the rotational power output from the engine E to a working machine that performs work in the planting field. The working machine is, for example, a rotary tiller that performs tillage work, a fertilizer spreader that performs fertilization work, etc. In addition to the PTO shaft 150, the tractor 1 also has a lifting arm connected to the working machine at the rear.

[0046] The tractor 1 also includes an engine ECU (Electronic Control Unit) 100. The engine ECU 100 is housed in, for example, an engine room, and controls the engine E. The engine ECU 100, for example, together with a travel system ECU that controls the rotation of the drive wheels (rear wheels 5) to control the travel speed, and a work machine lifting system ECU that controls the lifting of the work machine, constitutes a drive control system of the tractor 1.

[0047] <Step 20 (20L) on the left side of the machine body>

[0048] Below, refer to Figure 2A as well as Figure 2B , the step portion 20L on the left side of the machine body will be described. Figure 2A as well as Figure 2B 20L is a perspective view showing the step portion 20L on the left side of the machine body. Figure 2A as well as Figure 2B All of them are pictures when the machine body is viewed from the upper left side (stereoscopic pictures). Figure 2A FIG. 2 shows a state where the anti-slip plate 24 described later is installed on the step portion 20L. Figure 2B 2 shows a state where the anti-plate plate 24 is removed.

[0049] like Figure 2A as well as Figure 2B As shown, the tractor 1 has a fuel tank 11. The fuel tank 11 is made of resin, for example, and stores fuel for the engine E (see Figure 1 ) supplied fuel. In addition, the fuel tank 11 is arranged on at least either side of the transmission case 6. In the present embodiment, the fuel tank 11 is arranged on both sides of the left and right sides of the transmission case 6, respectively.

[0050] In addition, the fuel tank 11 may also be configured as follows: the fuel tank 11 is mounted on the body frame 2 (see Figure 1 ) extends in the left and right directions, and the left and right ends of the fuel tank 11 are arranged on the left and right sides of the transmission case 6. In addition, it can also be configured as follows: the fuel tank 11 is arranged on one side of the left and right, and the working oil tank for storing working oil is arranged on the other side of the left and right.

[0051] like Figure 2A as well as Figure 2B As shown, the outer shape of the fuel tank 11 (11L) on the left side of the body is formed in a stepped shape on the side facing the outside of the body in the front cross-sectional view. That is, the fuel tank 11L is shaped so that the lower part protrudes outward (to the left) more than the upper part. As a result, the fuel tank 11L can increase the capacity of the fuel tank while suppressing the height.

[0052] In addition, the fuel tank 11L is formed into a stepped shape, thereby forming an upper step portion 21 (21L) of the step portion 20L on the left side of the body. The upper step portion 21L has a flat surface 22 (22L). The flat surface 22L forms a step on the fuel tank 11L. In addition, the upper step portion 21L has a groove portion 23 (23L) and an anti-skid plate 24 (24L). Figure 2B As shown, the groove portion 23L is provided on the flat surface 22L.

[0053] The groove portion 23L is a plurality of grooves 23a (23aL), and each groove 23aL is connected by providing a connecting groove 23b (23bL) in the central portion. The groove 23aL is continuous from the inner side (inside the body) of the flat surface 22L to the outer end. Figure 2A As shown, the anti-slip plate 24L is mounted on the flat surface 22L to cover the groove portion 23L. The anti-slip plate 24L is made of metal, for example. The anti-slip plate 24L has a plurality of holes 24a (24aL) formed by anti-slip processing.

[0054] As described above, by attaching the anti-slip plate 24L to the flat surface 22L, the strength of the flat surface 22L, which is the surface on which the passenger places his feet, can be improved. In addition, the strength reduced by providing the groove 23L can also be reinforced by the anti-slip plate 24L. In addition, by performing anti-slip processing (i.e., the hole 24aL) on the anti-slip plate 24L, safety can be improved.

[0055] In addition, if Figure 2B As shown, for example, by fastening a fastener such as a screw to a threaded hole member 25a embedded in the flat surface 22L of the fuel tank 11L made of resin, the anti-skid plate 24L is attached to the flat surface 22L.

[0056] The tractor 1 has a lower step 26 (26L) as the step 20L in addition to the upper step 21L as the step 20L. Figure 2A as well as Figure 2B As shown, the lower step portion 26L is arranged below the upper step portion 21L. As described above, by positioning the lower step portion 26L below the upper step portion 21L, the upper step portion 21L and the lower step portion 26L are formed in a step-like shape, so that the passenger can place his feet on the lower step portion 26L, thereby making it easier to get on and off.

[0057] <Fuel tank bracket 30 (30L) on the left side of the machine body>

[0058] Below, refer to Figure 3 , the fuel tank bracket 30L on the left side of the body will be described. Figure 3 1 is a perspective view showing a fuel tank bracket 30L on the left side of the machine body. The fuel tank bracket 30L on the left side of the machine body is provided on the left side of the machine body outer side which becomes the transmission case 6.

[0059] like Figure 3 As shown, the fuel tank bracket 30L includes an upper fuel tank bracket 31 (31L) and a lower fuel tank bracket 34 (34L). The upper fuel tank bracket 31L includes a connecting portion 32 (32L) and an upper supporting portion 33 (33L). The base end side of the connecting portion 32L is fixed to the upper portion of the outer side of the transmission case 6, and the upper supporting portion 33L is provided at the distal end side of the connecting portion 32L.

[0060] The upper support portion 33L is a bent plate member, and the upper support portion 33L supports the fuel tank 11L (see Figure 2A as well as Figure 2B ) is embraced, and the fuel tank 11L is suspended and supported from above. That is, the upper tank bracket 31L is fixed to the transmission case 6, and supports the fuel tank 11L from above.

[0061] The lower tank bracket 34L has a lower support portion 35 (35L). The base end side of the lower support portion 35L is fixed to the lower portion of the outer side of the transmission case 6. The lower support portion 35L supports the fuel tank 11L from below at the distal end side.

[0062] In addition, if Figure 3 As shown, the lower step portion 26L is mounted on the lower tank bracket 34L. That is, the base end side of the lower step portion 26L is fixed to the lower tank bracket 34L, and a step portion is formed on the tip end side of the lower step portion 26L.

[0063] <Step 20 (20R) on the right side of the machine body>

[0064] Below, refer to Figure 4A as well as Figure 4B , the step portion 20R on the right side of the body is described. Figure 4A as well as Figure 4B 20R is a perspective view showing the step portion 20R on the right side of the machine body. Figure 4A as well as Figure 4B All of them are pictures when the machine body is viewed from the upper right side (stereoscopic pictures). Figure 4B 2 shows a state where an exhaust gas purification device 40 described later is installed.

[0065] like Figure 4A as well as Figure 4B As shown, the outer shape of the fuel tank 11 (11R) on the right side of the body is formed in a stepped shape toward the outside of the body in the front cross-sectional view. That is, the fuel tank 11R is shaped so that the lower part protrudes outward (to the left) more than the upper part. Thus, the height of the fuel tank 11R can be suppressed and the capacity of the fuel tank can be increased.

[0066] In addition, the fuel tank 11R has a stepped shape, thereby constituting an upper step portion 21 (21R) in the step portion 20R on the right side of the body. The upper step portion 21R has a flat surface 22 (22R). The flat surface 22R forms a step on the fuel tank 11R. In addition, the upper step portion 21R has a groove and an anti-skid plate 24 (24R). The groove is provided on the flat surface 22R.

[0067] The groove portion is aligned with the groove portion 23L on the left side of the body (see Figure 2B ) is similarly a plurality of grooves, and each groove is connected by providing a connecting groove in the central portion. The groove is continuous from the inner side (inside the body) of the flat surface 22R to the outer end. The anti-slip plate 24R is mounted on the flat surface 22R to cover the groove portion 23R. The anti-slip plate 24R is made of metal, for example. The anti-slip plate 24R has a plurality of holes 24a (24aR) formed by anti-slip processing.

[0068] As described above, by installing the anti-slip plate 24R, the strength of the flat surface 22R can be improved, and the strength reduced by providing the groove portion can also be reinforced by the anti-slip plate 24R. In addition, by performing anti-slip processing (hole 24aR) on the anti-slip plate 24R, safety can be improved.

[0069] Furthermore, the anti-skid plate 24R is attached to the flat surface 22R by, for example, fastening a fastener 25b such as a screw to a threaded hole member embedded in the flat surface 22R of the fuel tank 11R made of resin.

[0070] The tractor 1 has a lower step 26 (26R) as the step 20R in addition to the upper step 21R. Figure 4A as well as Figure 4BAs shown in FIG. 1 , the lower step 26R is disposed below the upper step 21R. As described above, by positioning the lower step 26R below the upper step 21R, the upper step 21R and the lower step 26R are formed in a stair-like shape, so that the passenger can place his feet on the lower step 26R, thereby making it easier to get on and off.

[0071] Here, if Figure 4B As shown, the tractor 1 has an exhaust gas purification device 40. The exhaust gas purification device 40 is used to purify the exhaust gas from the engine E (see Figure 1 The exhaust gas purification device 40 has, for example, a DOC (Diesel Oxidation Catalyst) function for efficiently oxidizing nitrogen monoxide, and an SCR (Selective Catalytic Reduction) 41 for selective catalytic reduction of ammonia generated from a urea aqueous solution (hereinafter referred to as urea water).

[0072] like Figure 4A As shown, the fuel tank 11R has a front flat surface 27 at the front. The front flat surface 27 is formed continuously from the flat surface 22R constituting the upper step portion 21R. An SCR bracket 28 is provided on the front flat surface 27. An SCR 41 is mounted on the SCR bracket 28. The SCR 41 is arranged at the front of the fuel tank 11R by being mounted on the SCR bracket 28.

[0073] As described above, by arranging the SCR 41 in the fuel tank 11R, the capacity of the fuel tank 11R can be ensured, and a space for arranging the SCR 41, that is, the exhaust gas purification device 40 can be ensured. In this case, a support member for supporting the SCR 41 from below is not required, and the number of parts can be reduced.

[0074] <Fuel tank bracket 30 (30R) on the right side of the machine body>

[0075] Below, refer to Figure 5 , the fuel tank bracket 30R on the right side of the body will be described. Figure 5 1 and 2 are perspective views showing a fuel tank bracket 30R on the right side of the machine body. The fuel tank bracket 30R on the right side of the machine body is provided on the right side of the machine body outer side which becomes the transmission case 6.

[0076] like Figure 5 As shown, the fuel tank bracket 30R includes an upper fuel tank bracket 31 (31R) and a lower fuel tank bracket 34 (34R). The upper fuel tank bracket 31R includes a connecting portion 32 (32R) and an upper supporting portion 33 (33R). The base end side of the connecting portion 32R is fixed to the upper portion of the outer side of the transmission case 6, and the upper supporting portion 33R is provided at the distal end side of the connecting portion 32R.

[0077] The upper support portion 33R is a bent plate member that supports the fuel tank 11R (see Figure 4A as well as Figure 4B ) is held in, and the fuel tank 11R is suspended and supported from above. That is, the upper tank bracket 31R is fixed to the transmission case 6, and supports the fuel tank 11R from above.

[0078] The lower tank bracket 34R has a lower support portion 35 (35R). The base end side of the lower support portion 35R is fixed to the lower portion of the outer side of the transmission case 6. The lower support portion 35R supports the fuel tank 11R from below at the distal end side.

[0079] In addition, if Figure 5 As shown in FIG. 1 , the lower step portion 26R is attached to the lower tank bracket 34R. That is, the base end side of the lower step portion 26R is fixed to the lower tank bracket 34R, and a step portion is formed at the tip end side of the lower step portion 26R.

[0080] Here, return to Figure 2A , Figure 2B as well as Figure 3 , the installation of the urea water tank 50 for storing urea water supplied to the SCR 41 will be described. Figure 2A as well as Figure 2B As shown, the tractor 1 has a urea water tank 50 in front of the fuel tank 11L on the left side of the machine body.

[0081] In addition, if Figure 3 As shown, the tractor 1 includes a urea water tank bracket 51 that supports the urea water tank 50. The urea water tank bracket 51 is fixed to the fuel tank 11R (see FIG. 1 ) in which the exhaust gas purification device 40 (SCR 41) is arranged. Figure 4A as well as Figure 4B ) on the fuel tank 11L on the opposite side of the left and right sides. A urea water tank 50 is mounted on the urea water tank bracket 51.

[0082] As described above, the urea water tank bracket is fixed to the fuel tank 11L on the opposite side of the fuel tank 11R where the SCR 41 is arranged, so that the urea water tank 50 can be stabilized on the opposite side of the SCR 41 across the transmission case 6. In addition, since the urea water tank 50 is on the opposite side of the SCR 41, the body balance is good.

[0083] Furthermore, according to the working vehicle (tractor) 1 of the above-described embodiment, the fuel tank 11 is supported by the upper tank bracket 31 and the lower tank bracket 34 respectively fixed to the transmission case 6, so that the fuel tank 11 on which the passengers place their feet when getting on and off can be securely mounted to the vehicle body 10.

[0084] Furthermore, the lower step portion 26 attached to the lower tank bracket 34 is provided between the upper step portion 21 formed on the fuel tank 11 and the ground. This makes it easy to get on and off the vehicle body 10. This improves the ease of getting on and off.

[0085] Furthermore, by providing the groove 23 on the flat surface 22, when the passenger places his feet on the upper step 21, even if mud or the like attached to the passenger's feet falls from the hole 24a of the anti-slip plate 24 onto the flat surface 22, it can easily fall to the outside of the flat surface 22 through the groove 23. Thus, the cleanability can be improved.

[0086] <Tool Box 60 and Tool Box Fixing Section 70>

[0087] Below, refer to Figure 6 to Figure 8 , the tool box 60 and the tool box fixing portion 70 are described. Figure 6 It is a perspective view showing the storage state of the tool box 60. Figure 7 1 is a perspective view showing the tool box 60 . Figure 8 is a perspective view showing the tool box fixing portion 70. In addition, Figure 6 as well as Figure 8 This is a diagram (perspective diagram) of the tool box fixing portion 70 (and the tool box 60 ) as viewed from the upper right oblique direction.

[0088] The tractor 1 has a tool box 60 stored in the machine body, and tools for attaching and removing attachments are stored in the tool box 60. In addition, the tractor 1 has an exhaust gas purification device 40 (SCR 41), so in addition to the space for installing the SCR 41, a space for supporting and fixing the tool box 60 is also ensured.

[0089] like Figure 6 As shown, the tractor 1 has a toolbox fixing portion 70 for fixing the toolbox 60. The toolbox fixing portion 70 is provided on the upper tank bracket 31R on the right side of the machine body, and the toolbox 60 is detachably fixed to the side (right side) of the transmission case 6 and above the upper tank bracket 31R.

[0090] like Figure 7 As shown, the toolbox 60 is in a rectangular box shape. The toolbox 60 has a long side forming surface 61, a short side forming surface 62, a bottom surface 63 and a cover surface 64. The long side forming surface 61 is a part of the side circumference of the toolbox 60, and is a pair of surfaces that form long sides in a top view (top view) of the toolbox 60. The short side forming surface 62 is a part of the side circumference of the toolbox 60, and is a pair of surfaces that form short sides in a top view (top view) of the toolbox 60.

[0091] The bottom surface 63 is a fixed surface surrounded by the long side forming surface 61 and the short side forming surface 62. The cover surface 64 is the top surface of the tool box 60 and is attached to one of the pair of long side forming surfaces 61 by a hinge 64a so as to be openable and closable.

[0092] In addition, the tool box 60 has a handle 65. The handle 65 is provided on one of the pair of short side forming surfaces 62. In addition, in the tool box 60, the short side forming surface 62 provided with the handle 65 becomes the front surface (the surface near the front side when the tool box 60 is stored), and the short side forming surface 62 without the handle 65 becomes the rear surface (the surface on the back side when the tool box 60 is stored). In addition, the tool box 60 has a plate-shaped receiving portion 66.

[0093] The receiving portion 66 is provided on the short side forming surface 62 which becomes the front surface, and protrudes from the short side forming surface 62. The receiving portion 66 is engaged with the protrusion 77a of the locking portion 77 described later when the tool box 60 is stored. In addition, regarding the receiving portion 66, a slit may be formed at the lower part of the short side forming surface 62 which becomes the front surface, and the receiving portion 66 may be composed of the slit.

[0094] like Figure 8 As shown, the tool box fixing portion 70 is provided above the fuel tank 11R on the right side of the machine body as described above. The tool box fixing portion 70 has a first side surface 71, a second side surface 72, a third side surface 73, an opening portion (also referred to as an opening surface) 74, and a support surface 75.

[0095] The first side surface 71 is formed on the tool box 60 (see Figure 6 ) is a surface facing one (front) long side forming surface 61 when the tool box 60 is stored. In addition, the second side surface 72 is a surface facing the other (rear) long side forming surface 61 when the tool box 60 is stored. In addition, a guide portion 78 is provided on at least one of the first side surface 71 and the second side surface 72 to guide the tool box 60 to slide in the left and right directions.

[0096] The third side surface 73 is provided with the handle 65 (see Figure 6 The opening 74 opens the short side forming surface 62 provided with the handle 65 when the tool box 60 is stored. The support surface 75 is a surface facing the bottom surface 63 when the tool box 60 is stored, and is a surface that supports the tool box 60 from below.

[0097] In addition, if Figure 8As shown, the tool box fixing portion 70 further includes a force applying portion 76 and a locking portion 77. The force applying portion 76 is provided on the third side surface 73, and applies force to the tool box 60 supported on the supporting surface 75 toward the opening 74. The force applying portion 76 is, for example, composed of a leaf spring. In addition, the force applying portion 76 may also be composed of a force applying member other than a leaf spring, such as a coil spring.

[0098] The locking portion 77 is provided at the opening 74 to lock the tool box 60 so that the tool box 60 supported by the support surface 75 and urged by the urging portion 76 stays on the support surface 75. The locking portion 77 has a hook-shaped protrusion 77a. The protrusion 77a is bent toward the short side forming surface 62 provided with the handle 65 when the tool box 60 is stored.

[0099] According to the working vehicle (tractor) 1 according to the embodiment, regardless of the presence or absence of the exhaust gas purification device 40 (SCR 41 ), a space for installing the tool box 60 can be ensured, and the tool box 60 can be supported and fixed at a position with good usability.

[0100] Furthermore, the tool box 60, which is urged by the urging portion 76, is engaged by the engaging portion 77, so that the tool box 60 can be secured to the tool box securing portion 70 in the state where the tool box 60 is stored. Thus, even if vibration occurs during the travel of the tractor 1, the tool box 60 can be stably supported. Furthermore, since the tool box 60 is provided with the handle 65, it is easy to take out the tool box 60.

[0101] Furthermore, by engaging the hook-shaped protrusion 77a with the plate-shaped receiving portion 66, the tool box 60 can be supported and fixed to the tool box fixing portion 70, thereby stably supporting the tool box 60. In addition, when the receiving portion 66 is composed of a slit, the protrusion 77a is engaged by inserting the tip of the hook-shaped protrusion 77a into the slit.

[0102] <Configuration of cockpit fixing bracket 80>

[0103] Below, refer to Figure 6 as well as Fig. 9 , the configuration of the cockpit fixing frame 80 (81, 82) is described. Fig. 9 8 is a perspective view showing the rear cockpit fixing frame 82. Fig. 9 This is a perspective view of the rear axle housing 83 as viewed from the upper left. The tractor 1 has a structure for supporting the cab 7 (see FIG. Figure 1 ) of the cockpit fixing frame 80. The cockpit fixing frame 80 includes a front cockpit fixing frame 81 and a rear cockpit fixing frame 82.

[0104] like Figure 6As shown, the front cockpit fixing frame 81 is provided on the upper fuel tank bracket 31 , and the cockpit 7 is supported on the upper fuel tank bracket 31 .

[0105] like Fig. 9 As shown, the rear cockpit fixing frame 82 is provided on the rear axle housing 83, and the cockpit 7 is supported on the rear axle housing 83. The rear cockpit fixing frame 82 has a fixing portion 82a. The fixing portion 82a is offset relative to the center line L in the front-rear direction. In addition, the rear cockpit fixing frame 82 has a plurality of (4) mounting bolts 82b. The mounting bolts 82b are arranged in a line-symmetrical manner relative to the center line L in the front-rear direction.

[0106] By arranging the mounting bolts 82b in a line-symmetrical manner with respect to the center line L, the rear cockpit mounting bracket 82 can be mounted without change even if the rear cockpit mounting bracket 82 is rotated 180 degrees. In addition, by offsetting the fixing portion 82a, the position changes when the rear cockpit mounting bracket is rotated 180 degrees and mounted, so that, for example, even if the wheelbase changes due to a different model, the same member can be used.

[0107] Those skilled in the art can easily derive further effects and variations. Therefore, the broader aspects of the present invention are not limited to the specific details and representative embodiments shown and recorded above. Therefore, various changes can be made without departing from the conceptual spirit and scope of the general invention defined by the scope of the added claims and their equivalents.

Claims

1. A working vehicle, characterized in that: The working vehicle has: a transmission housing that houses a transmission that transmits power from the engine to the drive wheels and supports the vehicle body; a fuel tank storing fuel to be supplied to the engine; a lower step portion fixed to the transmission case side; and an upper step portion, which is composed of a flat surface forming a step in the fuel tank, The lower step portion is arranged at a lower position than the upper step portion, and the upper step portion and the lower step portion are formed in a stepped shape. The fuel tank has a front flat surface formed continuously from a flat surface constituting an upper step portion. An exhaust gas purification device for purifying exhaust gas exhausted from the engine is disposed on the front flat surface of the fuel tank.

2. The working vehicle according to claim 1, characterized in that: The lower step portion is attached to a lower fuel tank bracket that supports the fuel tank from below.

3. The working vehicle according to claim 1 or 2, characterized in that: The upper step portion has: Multiple holes for anti-slip; and The groove portion discharges the dropped objects dropped from the hole to the outside.

4. The working vehicle according to claim 1 or 2, characterized in that: The working vehicle has: an upper fuel tank bracket that supports the fuel tank from above; and The tool box fixing portion is provided on the upper fuel tank bracket and fixes the tool box above the fuel tank so that the tool box can be attached and detached.

5. The working vehicle according to claim 4, characterized in that: The toolbox is in the shape of a rectangular box and has: a pair of long side-forming faces which form long sides when viewed from above; and A pair of short sides form a surface, which forms a short side when viewed from above, The tool box fixing portion comprises: a first side surface and a second side surface, which are respectively facing the pair of long side-forming surfaces when the tool box is stored; a third side surface facing any one of the pair of short side forming surfaces when the tool box is stored; Opening; a force applying portion, which is disposed on the third side surface and applies force to the tool box toward the opening; as well as The locking portion is provided at the opening portion and locks the tool box which is urged by the urging portion.

6. The working vehicle according to claim 5, characterized in that: The locking portion of the tool box fixing portion has a protrusion, The tool box includes a receiving portion that protrudes from the short side forming surface and engages with the protrusion when the tool box is stored.

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