Work vehicle

Abstract

To provide a work vehicle having a footrest on which a driver can place his / her feet without feeling cramped in a cabin in which a front lower end of a cabin frame is obliquely cut out.SOLUTION: A work vehicle includes a cabin frame that defines a cabin, and a floor mat that is placed on the cabin frame. The cabin frame includes a floor frame, a front frame, and a seat support frame. The floor mat includes a mat tip portion and a mat base portion. A first angle formed by a first mat surface of the mat base portion facing an interior of the cabin and a second mat surface of the mat tip portion facing the interior of the cabin is larger than a second angle formed by a plane defined to include a first straight line representing a boundary between the frame base portion and a frame inclined portion facing the interior of the cabin and a second straight line representing a boundary between the frame inclined portion and the front frame facing the interior of the cabin, and a first floor surface of the frame base portion facing the interior of the cabin.SELECTED DRAWING: Figure 7

Description

Technical Field

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

Background Art

[0002] Patent Document 1 describes a work vehicle having a footrest that slopes downward from the front to the rear of the cabin. Patent Document 2 shows a work vehicle in which the cabin is openable and closable.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0004] In the work vehicle of Patent Document 2, the front lower end of the cabin frame is diagonally notched so that the cabin frame does not contact the vehicle body frame when the cabin is opened and closed. When a footrest that slopes downward from the front to the rear of the cabin as in Patent Document 1 is provided according to the shape of the notched cabin frame, there is a problem that the slope of the footrest is too large and it is difficult to place the feet. On the other hand, if a footrest is not provided on the inclined frame of the notched cabin frame, there is a problem that the space for placing the feet inside the cabin is too small and the driver feels cramped.

Means for Solving the Problems

[0005] The work vehicle according to the first aspect of the present disclosure includes a cabin frame that defines a cabin, and a floor mat placed on the cabin frame. The cabin frame includes a floor frame, a front frame, and a seat support frame. The floor frame supports the floor mat. The front frame supports the front window. The seat support frame supports the driver's seat on the side opposite to the front frame with respect to the floor frame. The floor frame includes a flat frame base end portion connected to the seat support frame, and a frame inclined portion that connects the front frame and the frame base end portion. The floor mat includes a mat tip portion and a mat base end portion. The mat tip portion is provided so as to be supported by both the frame inclined portion and the frame base end portion. The mat base end portion is connected to the mat tip portion and is provided on the frame base end portion between the mat tip portion and the seat support frame. A first angle formed by a first mat surface facing the inside of the cabin of the mat base end portion and a second mat surface facing the inside of the cabin of the mat tip portion is larger than a second angle formed by a plane defined so as to include a first straight line representing a boundary facing the inside of the cabin between the frame base end portion and the frame inclined portion and a second straight line representing a boundary facing the inside of the cabin between the frame inclined portion and the front frame, and a first floor surface facing the inside of the cabin of the frame base end portion.

Advantages of the Invention

[0006] According to the technology disclosed in the present application, it is possible to provide a work vehicle having a footrest that allows a driver to place their feet without feeling cramped in a cabin in which the front lower end of the cabin frame is cut out obliquely.

Brief Description of the Drawings

[0007]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Figure 10

Figure 11

Figure 12

Mode for Carrying Out the Invention

[0008] Hereinafter, the present invention will be specifically described based on the drawings showing its embodiments. In the drawings, the same reference numerals indicate corresponding or substantially identical configurations. <Embodiment> <Overall Configuration>

[0009] Referring to FIG. 1, the work vehicle 1 includes a vehicle body frame 2, a traveling device 3, a working device 4, and a cabin 5. The vehicle body frame 2 supports a pair of traveling devices 3, a working device 4, and a cabin 5. The pair of traveling devices 3 are rotatably supported by the vehicle body frame 2 and are configured to drive the vehicle body frame 2 forward and backward. In the illustrated embodiment, the pair of traveling devices 3 are crawler-type traveling devices. For this reason, each of the pair of traveling devices 3 includes a drive wheel 31, driven wheels 32, 33, and idler wheels 34. However, the pair of traveling devices 3 are not limited to crawler-type traveling devices. The vehicle body frame 2 has a vehicle body front portion 2F and a vehicle body rear portion 2R opposite to the vehicle body front portion 2F. The traveling device 3 may be, for example, a front-wheel / rear-wheel traveling device or a traveling device having a front wheel and a rear crawler. The working device 4 includes a tool (work equipment) (bucket) 41 at the distal end of the working device 4. The proximal end of the working device 4 is attached to the vehicle body rear portion 2R of the vehicle body frame 2. The working device 4 includes a pair of arm assemblies 42 for rotatably supporting the 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.

[0010] The lift link 44 is rotatable relative to the vehicle body frame 2 around a fulcrum shaft 46. The arm 45 is rotatable relative to the lift link 44 around a joint shaft 47. The working 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.

[0011] Referring to FIG. 2, the cabin 5 is attached to the front body portion 2F of the vehicle body frame 2. In FIGS. 1 to 3, a common rotational axis A defined by the rotary shafts RSL and RSR is illustrated. Referring to FIGS. 1 and 2, the cabin 5 can be switched between a closed state (see FIG. 1) placed on the front body portion 2F and an open state (see FIG. 2) separated from the front body portion 2F by rotating around the rotary shafts RSL and RSR. In the closed state, for example, the supported portion 53SUP of the cabin 5 abuts against the support portion 2SUP of the front body portion 2F, and the cabin 5 is supported by the front body portion 2F. The vehicle body frame 2 (front body portion 2F) has a storage hole 2HOL for storing the floor frame 53FS (details will be described later) of the cabin 5 therein in the closed state. XC Referring to FIGS. 1 and 2, the cabin 5 can be switched between a closed state (see FIG. 1) placed on the front body portion 2F and an open state (see FIG. 2) separated from the front body portion 2F by rotating around the rotary shafts RSL and RSR. In the closed state, for example, the supported portion 53SUP of the cabin 5 abuts against the support portion 2SUP of the front body portion 2F, and the cabin 5 is supported by the front body portion 2F. The vehicle body frame 2 (front body portion 2F) has a storage hole 2HOL for storing the floor frame 53FS (details will be described later) of the cabin 5 therein in the closed state.

[0012] In the embodiment according to the present application, the front-rear direction D FB (front direction D F / rear direction D B ) means the front-rear direction (front direction / rear direction) as viewed from the driver seated in the driver's seat 52 of the cabin 5. The left direction D L , the right direction D R , and the width direction D W mean the left direction, the right direction, and the left-right direction, respectively, as viewed from the driver. The upward direction D U , the downward direction D D , and the height direction D H mean the upward direction, the downward direction, and the height direction, respectively, as viewed from the driver. Specifically, the downward direction D D is perpendicular to the front direction D F , the rear direction D B , and the width direction D W and is the direction from the vehicle body frame 2 toward the ground. The upward direction D U is the opposite direction of the downward direction D H in the height direction D D . The front-rear / left-right (width) / up-down (height) directions of the work vehicle 1 shall be the same as the front-rear / left-right (width) / up-down (height) directions as viewed from the driver, respectively.

[0013] FIG. 4 is a front view of the vehicle body frame 2 and the cabin 5. In FIG. 4, the working device 4 is shown omitted. Referring to FIG. 4, the work vehicle 1 includes a front door 51 in front of the cabin 5. The front door 51 includes a front window 51W. In FIG. 4, the internal space of the cabin 5 visible through the front window 51W is shown by a solid line. The work vehicle 1 includes a driver's seat 52 and an operating device 54L or 54R in the cabin 5. The internal space of the cabin 5 is defined by a cabin frame 53. That is, the cabin frame 53 defines the cabin 5. The cabin frame 53 includes a top frame 53T that covers the upper part of the internal space of the cabin 5, a first side frame 53LF that covers one of the left and right sides of the internal space of the cabin 5, and a second side frame 53RF that covers the other of the left and right sides of the internal space of the cabin 5. As shown in FIGS. 2 and 3, the cabin frame 53 is rotatably connected to the vehicle body frame 2 around rotational shafts (rotational shaft) RSL and RSR provided at the rear part 2R of the vehicle body frame 2. That is, the vehicle body frame 2 supports the cabin frame 53 so as to be rotatable around the rotation axis A XC Therearound. In FIG. 2, in order to clarify the structure of the vehicle body frame 2, the illustration excluding the vehicle body frame 2 and the cabin 5 is omitted.

[0014] In FIG. 3, one of the pair of traveling devices 3 is provided on the left side of the cabin 5. The other of the pair of traveling devices 3 is provided on the right side of the cabin 5. The pair of traveling devices 3 is in the width direction D WIt faces. One of the pair of arm assemblies 42 is provided on the left side of the cabin 5. The other of the pair of arm assemblies 42 is provided on the right side of the cabin 5. More specifically, one of the arm cylinders 48 and one of the arms 45 are provided on the left side of the cabin 5. The other of the arm cylinders 48 and the other of the arms 45 are provided on the right side of the cabin 5. FIG. 1 shows the left side of the work vehicle 1. As shown in FIGS. 3 and 4, the vehicle body frame 2 is generally symmetric with respect to the vehicle body center plane M. Among the pair of traveling devices 3, the traveling device 3 provided on the left side with respect to the vehicle body center plane M is shown as the first traveling device 3L, and the traveling device 3 provided on the right side with respect to the vehicle body center plane M is shown as the second traveling device 3R.

[0015] Among the pair of arm assemblies 42, the arm assembly 42 provided on the left side with respect to the vehicle body center plane M is shown as the first arm assembly 42L, and the arm assembly 42 provided on the right side with respect to the vehicle body center plane M is shown as the second arm assembly 42R. The lift link 44 provided on the left side with respect to the vehicle body center plane M is shown as the first lift link 44L, and the lift link 44 provided on the right side with respect to the vehicle body center plane M is shown as the second lift link 44R. The arm 45 provided on the left side with respect to the vehicle body center plane M is shown as the first arm 45L, and the arm 45 provided on the right side with respect to the vehicle body center plane M is shown as the second arm 45R. The fulcrum shaft 46 provided on the left side with respect to the vehicle body center plane M is shown as the first fulcrum shaft 46L, and the fulcrum shaft 46 provided on the right side with respect to the vehicle body center plane M is shown as the second fulcrum shaft 46R. The joint shaft 47 provided on the left side with respect to the vehicle body center plane M is shown as the first joint shaft 47L, and the joint shaft 47 provided on the right side with respect to the vehicle body center plane M is shown as the second joint shaft 47R.

[0016] Referring to FIGS. 1 and 3, the work vehicle 1 further includes an engine 6 provided at the rear part 2R of the vehicle 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 is in the width direction D of the work vehicle 1 WIn this case, it is provided between a pair of arm assemblies 42. The work vehicle 1 further includes a bonnet cover 8 for covering the engine 6. The work vehicle 1 further includes a rear bonnet cover 9 provided at the rear end of the vehicle body frame 2. The rear bonnet cover 9 is openable and closable, and maintenance personnel can perform maintenance work on the engine 6 and the like.

[0017] FIG. 5 is a cross-sectional view of the cabin 5 taken along the cutting plane line V-V' of FIG. 4. Referring to FIG. 5, the work vehicle 1 includes a floor mat 60 placed on the cabin frame 53. The cabin frame 53 further includes a front frame 53FT, a floor frame 53FS, and a seat support frame 53SS. The first side frame 53LF connects the front frame 53FT, the floor frame 53FS, and the seat support frame 53SS. Although not shown in FIG. 5, the cabin frame 53 is also generally symmetric with respect to the vehicle body center plane M (see FIG. 3), and the second side frame 53RF connects the front frame 53FT, the floor frame 53FS, and the seat support frame 53SS. The front frame 53FT supports the front window 51W. The front frame 53FT has an extension portion 53FTP that extends forward of the vehicle body frame 2 when the cabin frame 53 is placed on the vehicle body frame 2. The floor frame 53FS supports the floor mat 60. The seat support frame 53SS supports the driver's seat 52 on the side opposite to the front frame 53FT with respect to the floor frame 53FS. The floor frame 53FS includes a frame base end portion 53FSB and a frame inclined portion FSI. The frame base end portion 53FSB is connected to the seat support frame 53SS. The frame base end portion 53FSB is flat. The frame inclined portion FSI connects the front frame 53FT and the frame base end portion 53FSB. Specifically, the frame inclined portion FSI is connected to the extension portion 53FTP. Referring to FIGS. 4 and 5, the vehicle body frame 2 includes a front base frame 2BF that covers the front side of the frame inclined portion FSI when the cabin frame 53 is placed on the vehicle body frame 2.

[0018] FIG. 6 is a top view of the cabin 5 with the top frame 53T removed. Referring to FIGS. 5 and 6, the work vehicle 1 includes a cup holder 55 and a washer button 56 in front of the operating device 54L. The work vehicle 1 includes a monitor 57 in front of the operating device 54R. Referring to FIG. 5, the cup holder 55 is located in the front-rear direction D FB between the washer button 56 and the operating device 54L. The cup holder 55 and the washer button 56 are located below D D the driver's seat 52 and the operating device 54L. Referring to FIG. 4, the cup holder 55 is located below D B such that it faces rearward D D and cannot be seen through the front window 51W. The work vehicle 1 further includes a brake pad 58 provided on the floor frame 53FS and a brake arm 59 that supports the brake pad 58.

[0019] FIG. 6 omits the front door 51 and the front frame 53FT to clarify the shape of the floor mat 60. FIG. 7 is an enlarged cross-sectional view of the floor mat 60 and the cabin frame 53. Referring to FIGS. 6 and 7, the floor mat 60 includes a mat tip portion 61, a mat base portion 62, and a first additional mat portion 63. The mat tip portion 61 is provided so as to be supported by both the frame inclined portion FSI and the frame base end portion 53FSB. The mat base portion 62 is connected to the mat tip portion 61 and is provided on the frame base end portion 53FSB between the mat tip portion 61 and the seat support frame 53SS. The first additional mat portion 63 is provided on the frame inclined portion 53FSI on the side opposite to the mat base portion 62 with respect to the mat tip portion 61. Referring to FIG. 7, the mat tip portion 61 and the mat base portion 62 are integrally formed. The first additional mat portion 63 is separate from the mat tip portion 61 and the mat base portion 62, but may be integrally formed.

[0020] Referring to FIG. 7, a first angle θ1 formed by a first mat surface MS1 facing the inside of the cabin 5 of the mat base end portion 62 and a second mat surface MS2 facing the inside of the cabin 5 of the mat tip end portion 61 is larger than a second angle θ2 formed by a plane FS2 defined to include a first straight line L1 representing a boundary facing the inside of the cabin 5 between the frame base end portion 53FSB and the frame inclined portion 53FSI and a second straight line L2 representing a boundary facing the inside of the cabin 5 between the frame inclined portion 53FSI and the front frame 53FT, and a first floor surface FS1 facing the inside of the cabin 5 of the frame base end portion 53FSB. FIG. 5 shows that when the frame inclined portion 53FSI rotates around the rotation axis A XC an arc ARC indicates a trajectory through which the outer end of the frame inclined portion 53FSI farthest from the rotation axis A passes when it rotates around the rotation axis A XC The second angle θ2 is defined so that the frame inclined portion 53FSI does not contact the front base frame 2BF when it rotates around the rotation axis.

[0021] Furthermore, referring to FIG. 7, the first angle θ1 is larger than 150 degrees, and the second angle θ2 is smaller than 150 degrees. Thereby, the angle of the footrest can be made smaller than 30 degrees. When the angle of the footrest is smaller than 30 degrees, it is preferable because the burden on the lower limbs is small. Along the first floor surface FS1, the length W1 of the frame base end portion 53FSB in the longitudinal direction D LT in which the seat support frame 53SS and the frame inclined portion 53FSI face each other is larger than 131 cm. This is a length sufficient for a large-sized operator defined by JIS A8315:2010 (ISO3411:2017) to land on the mat base end portion 62 when putting a foot on the front frame 53FT and getting into the cabin 5.

[0022] FIG. 8 is a perspective view of the floor mat 60. FIG. 9 is a perspective view of the floor mat 60 as viewed from another direction. FIG. 10 is a cross-sectional view of the cabin 5 taken along the cutting plane line X-X' of FIG. 7. Referring to FIGS. 8 to 10, the mat base end portion 62 includes a first end 62E1, a second end 62E2, a third end 62E3, and a fourth end 62E4. The first end 62E1 is in contact with the mat tip end portion 61. The second end 62E2 is in the longitudinal direction D LTfaces the sheet support frame 53SS on the opposite side of the first end 62E1. The third end 62E3 connects the first end 62E1 and the second end 62E2. The fourth end 62E4 is in the longitudinal direction D LT and is perpendicular to the horizontal direction D LA and connects the first end 62E1 and the second end 62E2 on the opposite side of the third end 62E3 in the horizontal direction D. In this embodiment, the horizontal direction D LA is the same direction as the width direction D W .

[0023] The mat tip 61 includes a fifth end 61E5, a sixth end 61E6, a seventh end 61E7, and an eighth end 61E8. The fifth end 61E5 faces the frame inclined portion 53FSI. The sixth end 61E6 faces the frame base end portion 53FSB on the opposite side of the fifth end 61E5 in the longitudinal direction D LT . The seventh end 61E7 connects the fifth end 61E5 and the sixth end 61E6. The eighth end 61E8 connects the fifth end 61E5 and the sixth end 61E6 on the opposite side of the seventh end 61E7 in the horizontal direction D LA . Referring to FIG. 7, the fifth end 61E5 contacts the frame inclined portion 53FSI via the first additional mat portion 63. The sixth end 61E6 directly contacts the frame base end portion 53FSB. However, the fifth end 61E5 may directly contact the frame inclined portion 53FSI, and the sixth end 61E6 may indirectly contact the frame base end portion 53FSB via other members

[0024] The floor mat 60 further includes a first rib 64, a second rib 65, a third rib 66, a fourth rib 67, and a brake arm cover 68. The first rib 64 is connected to the third end 62E3 and the seventh end 61E7, is perpendicular to both the longitudinal direction D LT and the horizontal direction D LA , and protrudes from the first mat surface MS1 and the second mat surface MS2 in the protruding direction D PT in which the second mat surface MS2 inclines with respect to the first mat surface MS1. The second rib 65 is connected to the fourth end 62E4 and protrudes from the first mat surface MS1 in the protruding direction D PT . The third rib 66 is connected to the second end 62E2, the first rib 64, and the second rib 65, and protrudes in the protruding direction D PTprotrudes from the first mat surface MS1. Referring to FIG. 10, the first rib 64 is provided so as to abut against the first side frame 53LF. That is, the first side frame 53LF is provided so as to abut against the first rib 64. The second rib 65 is provided so as to abut against the second side frame 53RF on the opposite side of the first side frame 53LF in the lateral direction D LA opposite thereto. That is, the second side frame 53RF is provided so as to abut against the second rib 65 on the opposite side of the first side frame 53LF in the lateral direction D LA opposite thereto. The third rib 66 is provided so as to abut against the seat support frame 53SS. The first rib 64 to the third rib 66 facilitate positioning of the floor mat 60 on the floor frame 53FS, and prevent mud accumulated on the brake pad 58 from entering between the floor mat 60 and the floor frame 53FS.

[0025] FIG. 11 is a cross-sectional view taken along the cutting plane line XI-XI' of FIG. 6. Referring to FIGS. 6 and 11, the brake arm cover 68 is provided on the mat base end portion 62, covers the brake arm 59, and protrudes from the mat base end portion 62 in the protruding direction D PT therein. The mat tip portion 61 has a brake installation portion 69a cut out so as to overlap the brake pad 58 in the direction opposite to the protruding direction D PT . The fourth rib 67 faces the brake installation portion 69a, is connected to the eighth end 61E8, and protrudes from the second mat surface MS2 in the protruding direction D PT therein. The mat base end portion 62 has a portion cut out so as to overlap the brake arm cover 68 in the opposite direction. The mat tip portion 61, the mat base end portion 62, the first rib 64, the second rib 65, the third rib 66, and the fourth rib 67 are integrally formed.

[0026] FIG. 12 is a perspective view of the work vehicle 1 as seen from the diagonally front when the vehicle body frame 2 is cut along a plane along the front base frame 2BF. FIG. 12 shows a closed state in which the floor frame 53FS is stored inside the storage hole 2HOL of the vehicle body frame 2. Referring to FIG. 12, the cabin frame 53 is along the first floor surface FS1, and in the longitudinal direction D where the seat support frame 53SS and the frame inclined portion 53FSI face each other LT in the lateral direction D perpendicular to LA it has a first dust discharge port 53EXT configured to discharge dust inside the cabin 5 at approximately the center of the frame inclined portion 53FSI. The cabin frame 53 further includes a lid 53COV that covers the first dust discharge port 53EXT.

[0027] Referring to FIGS. 4 and 12, the vehicle body frame 2 further includes a second dust discharge port 2EXT and a discharge path 20. The second dust discharge port 2EXT is configured to discharge dust. The second dust discharge port 2EXT is provided in the front base frame 2BF. The vehicle body frame 2 further includes a lid 2COV provided in the second dust discharge port 2EXT. The discharge path 20 is located below D D of the first dust discharge port 53EXT in the closed state, and is forward D F and downward D D and inclined toward the second dust discharge port 2EXT. More specifically, the discharge path 20 is formed by an inclined frame 21, a first guard frame 22, and a second guard frame 23. The first guard frame 22 and the second guard frame 23 are formed by being bent from the inclined frame 21. Referring to FIGS. 6, 8, and 10, the mat tip 61 includes a lid covering portion 61a facing the first dust discharge port 53EXT and a frame covering portion 61b other than the lid covering portion 61a. With the above configuration, by removing the frame covering portion 61b and the lid 53COV, the mud on the floor mat 60 can be discharged to the discharge path 20, and by opening the lid 2COV, the mud accumulated in the discharge path 20 can be discharged to the outside of the work vehicle 1. <Actions and Effects of the Embodiment>

[0028] In the work vehicle 1 according to the present embodiment, in the cab 5 in which the front lower end of the cab frame 53 is notched obliquely like the frame inclined portion 53FSI, a mat tip portion 61 that is less inclined than the frame inclined portion 53FSI is provided to widen the area where the feet can be placed, so that a work vehicle 1 having a footrest 30 that allows the driver to place the feet without feeling cramped can be provided.

[0029] In the above embodiment, the case where the frame inclined portion 53FSI is flat is described, but it may be curved so as not to protrude beyond the arc ARC in FIG. 5. Even in that case, the second angle θ2 may be defined by the plane FS2 represented by the above-described first straight line L1 and second straight line L2 and the first floor surface FS1.

[0030] In the present application, "comprise" and its derivatives are non-limiting terms for explaining the existence of components and do not exclude the existence of other components not described. This also applies to "have", "include" and their derivatives.

[0031] The terms "~ member", "~ part", "~ element", "~ body", and "~ structure" can have multiple meanings, such as a single part or multiple parts.

[0032] Ordinal numbers such as "first" and "second" are merely terms for identifying the configuration and do not have other meanings (for example, a specific order, etc.). For example, just because there is a "first element" does not implicitly mean that there is a "second element", nor does the existence of a "second element" implicitly mean the existence of a "first element".

[0033] Words such as "substantially", "about", and "approximately" that represent a degree can mean a reasonable amount of deviation such that the final result does not change significantly, unless there is a special explanation in the embodiment. All numerical values described in the present application can be interpreted as including words such as "substantially", "about", and "approximately".

[0034] In this application, the phrase "at least one of A and B" should be construed to include only A, only B, and both A and B.

[0035] Considering the above disclosure, it is obvious that various changes and modifications to the present invention are possible. Therefore, the present invention may be implemented in a manner different from the specific disclosure of this application without departing from the spirit of the present invention.

Claims

1. A work vehicle comprising a cabin frame defining a cabin, a floor mat placed on the cabin frame, wherein the cabin frame comprises a floor frame supporting the floor mat, a front frame supporting a front window, and a seat support frame supporting a driver's seat on a side opposite to the front frame with respect to the floor frame, wherein the floor frame comprises a flat frame base end portion connected to the seat support frame, and a frame inclined portion connecting the front frame and the frame base end portion, wherein the floor mat is provided so as to be supported by both the frame inclined portion and the frame base end portion, and comprises a mat tip portion connected to the mat tip end and provided on the frame base end portion between the mat tip end and the seat support frame, wherein a first angle formed by a first mat surface facing the inside of the cabin of the mat base end portion and a second mat surface facing the inside of the cabin of the mat tip portion is larger than a second angle formed by a plane defined to include a first straight line representing a boundary facing the inside of the cabin between the frame base end portion and the frame inclined portion and a second straight line representing a boundary facing the inside of the cabin between the frame inclined portion and the front frame, and a first floor surface facing the inside of the cabin of the frame base end portion. Work vehicle.

2. The floor mat further comprises a first additional mat portion provided on the frame inclined portion on a side opposite to the mat base end portion with respect to the mat tip portion. The work vehicle according to claim 1.

3. The mat tip portion and the mat base end portion are integrally formed. The work vehicle according to claim 2.

4. The mat base end portion comprises a first end in contact with the mat tip portion, a second end facing the seat support frame on a side opposite to the first end in the longitudinal direction, a third end connecting the first end and the second end, and a fourth end connecting the first end and the second end on a side opposite to the third end in a lateral direction perpendicular to the longitudinal direction, wherein the mat tip portion comprises a fifth end facing the frame inclined portion, a sixth end facing the frame base end portion on a side opposite to the fifth end in the longitudinal direction, a seventh end connecting the fifth end and the sixth end, and an eighth end connecting the fifth end and the sixth end on a side opposite to the seventh end in the lateral direction, ​ ​ ​ ​ ​ ​ The floor mat is, a first rib that is connected to the third end and the seventh end, is perpendicular to the longitudinal direction and the transverse direction, and protrudes from the first mat surface and the second mat surface in a protruding direction in which the second mat surface is inclined with respect to the first mat surface; a second rib that is connected to the fourth end and protrudes from the first mat surface in the protruding direction; further comprising; The work vehicle according to claim 1.

5. The work vehicle according to claim 4, wherein the mat tip, the mat base end, the first rib, and the second rib are integrally formed.

6. The floor mat is connected to the second end, the first rib, and the second rib, and further comprises a third rib that protrudes from the first mat surface in the protruding direction. The work vehicle according to claim 4.

7. The work vehicle according to claim 6, wherein the mat tip, the mat base end, the first rib, the second rib, and the third rib are integrally formed.

8. The mat base end portion is, a first end in contact with the mat tip; a second end facing the seat support frame on the opposite side of the first end in the longitudinal direction; a third end connecting the first end and the second end; a fourth end connecting the first end and the second end on the opposite side of the third end in the transverse direction perpendicular to the longitudinal direction; including; The mat tip is, a fifth end facing the frame inclined portion; a sixth end facing the frame base end portion on the opposite side of the fifth end in the longitudinal direction; a seventh end connecting the fifth end and the sixth end; an eighth end connecting the fifth end and the sixth end on the opposite side of the seventh end in the transverse direction; including; The floor mat is, a first rib that is connected to the third end and the seventh end, is perpendicular to the longitudinal direction and the transverse direction, and protrudes from the first mat surface and the second mat surface in a protruding direction in which the second mat surface is inclined with respect to the first mat surface; a second rib that is connected to the fourth end and protrudes from the first mat surface in the protruding direction; further comprising; The work vehicle according to claim 2.

9. The work vehicle according to claim 8, wherein the mat tip, the mat base end, the first rib, and the second rib are integrally formed.

10. The floor mat is connected to the second end, the first rib, and the second rib, and further comprises a third rib that protrudes from the first mat surface in the protruding direction. The work vehicle according to claim 8.

11. The work vehicle according to claim 10, wherein the mat tip portion, the mat base portion, the first rib, the second rib, and the third rib are integrally formed.

12. The third rib is provided so as to contact the seat support frame. The work vehicle according to any one of claims 6, 7, 10, and 11.

13. The cab frame A first side frame that connects the front frame, the floor frame, and the seat support frame and is provided so as to contact the first rib; A second side frame that connects the front frame, the floor frame, and the seat support frame and is provided so as to contact the second rib on the opposite side in the lateral direction to the first side frame; further includes The work vehicle according to any one of claims 4 to 11.

14. further includes a brake pad provided on the floor frame and a brake arm that supports the brake pad, The floor mat is provided on the mat base portion, includes a brake arm cover that covers the brake arm and protrudes in the protruding direction from the mat base portion, The mat tip portion has a brake installation portion that overlaps the brake pad in a direction opposite to the protruding direction cut out, The mat base portion has a portion that overlaps the brake arm cover in the opposite direction cut out, The floor mat further includes a fourth rib that faces the brake installation portion, is connected to the eighth end, and protrudes from the second mat surface in the protruding direction. The work vehicle according to any one of claims 4 to 11.

15. The work vehicle according to claim 14, wherein the mat tip portion, the mat base portion, the first rib, the second rib, the third rib, and the fourth rib are integrally formed.

16. A vehicle body frame that rotatably supports the cab frame and has a storage hole for storing the floor frame inside in a closed state; A pair of traveling devices that are rotatably supported by the vehicle body frame and are configured to drive the vehicle body frame forward and backward; further includes The cabin frame has a first dust outlet configured to discharge dust inside the cabin at substantially the center of the frame inclined portion in the lateral direction perpendicular to the longitudinal direction in which the seat support frame and the frame inclined portion face each other along the first floor surface. The cabin frame further includes a lid that covers the first dust outlet. The vehicle body frame has a second dust outlet configured to discharge the dust, and in the closed state, a discharge path that is located below the first dust outlet and is inclined forward and downward toward the second dust outlet. and includes wherein the downward direction is perpendicular to the front-rear direction and the width direction in which the pair of traveling devices face each other, and is the direction from the vehicle body frame toward the ground. The work vehicle according to any one of claims 1 to 11.

17. The tip of the mat has a lid covering portion that faces the first dust outlet, and a frame covering portion other than the lid covering portion. and includes The work vehicle according to claim 16.

18. a vehicle body frame that rotatably supports the cabin frame around a rotation axis, and a pair of traveling devices that are rotatably supported by the vehicle body frame and are configured to drive the vehicle body frame forward and backward. and further includes The front frame has an extension portion that extends forward of the vehicle body frame when the cabin frame is placed on the vehicle body frame. The frame inclined portion is connected to the extension portion. The vehicle body frame includes a front base frame that covers the front side of the frame inclined portion when the cabin frame is placed on the vehicle body frame. The second angle is defined so as not to contact the front base frame when the frame inclined portion rotates around the rotation axis. The work vehicle according to any one of claims 1 to 11.

19. The first angle is greater than 150 degrees. The second angle is less than 150 degrees. The work vehicle according to any one of claims 1 to 11.

20. The length of the base end portion of the frame in the longitudinal direction in which the seat support frame and the frame inclined portion face each other along the first floor surface is greater than 131 cm. The work vehicle according to any one of claims 1 to 11.

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