Work vehicle

Abstract

To provide a work vehicle not requiring provision of a T-shaped joint part of cast steel at a connection portion of a portal frame and a side frame.SOLUTION: A work vehicle includes: a boarding space on which an occupant can board; and a portal frame provided across the boarding space. The portal frame includes: a horizontal frame part extending along a vehicle right and left direction; and right and left vertical frame parts 14 extending to a lower side from a left end portion and a right end portion of the horizontal frame part respectively. A first support member 61 and a second support member 62 are fixed to upper end portions of the vertical frame parts 14. The first support member 61 extends from a front end portion in an upper end portion of the vertical frame part 14 to a front side. The second support member 62 extends from a rear end portion of the upper end portion of the vertical frame part 14 to a rear side. Right and left side frames 20 extending in a vehicle front and rear direction are provided. Vehicle front and rear direction intermediate parts of the side frames 20 are fixed to the first support member 61 and the second support member 62.SELECTED DRAWING: Figure 10

Description

[Technical Field]

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

[0002] A known example of a utility vehicle is described in Patent Document 1. This utility vehicle (referred to as a "utility vehicle" in Patent Document 1) has a passenger space where a passenger can board, and a portal frame that spans the passenger space. The portal frame has a horizontal frame portion (referred to as a "transverse frame tube" in Patent Document 1) that extends along the left-right direction of the vehicle body, and left and right vertical frame portions (referred to as "upright portions" in Patent Document 1) that extend downward from the left and right ends of the horizontal frame portion, respectively.

[0003] This work vehicle also has left and right side frames (referred to as "horizontal portions" in Patent Document 1) that extend in the fore-and-aft direction of the vehicle body. The side frames are provided with T-shaped joints (referred to as "cast ends" in Patent Document 1) in the middle of the fore-and-aft direction of the vehicle body. The side frames and the vertical frame portions are connected via these joints. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] U.S. Patent No. 9,789,909 Summary of the Invention [Problem to be solved by the invention]

[0005] The T-shaped joint described in Patent Document 1 is generally made of cast steel. Therefore, such joints tend to be heavy. Furthermore, strict composition control is required for the manufacture of such joints, which tends to increase the manufacturing cost.

[0006] An object of the present invention is to provide a work vehicle that does not require the provision of a cast steel T-shaped joint at the connection between the portal frame and the side frame. [Means for solving the problem]

[0007] The present invention is characterized in that it comprises a boarding space in which a passenger can board, and a portal-shaped frame arranged to straddle the boarding space, the portal-shaped frame having a horizontal frame portion extending along the left-right direction of the vehicle body, and left and right vertical frame portions extending downward from the left and right ends of the horizontal frame portions, respectively, and a first support member and a second support member are fixed to the upper ends of each of the vertical frame portions, the first support member extending forward from the front end at the upper end of the vertical frame portions, and the second support member extending rearward from the rear end at the upper end of the vertical frame portions, and left and right side frames extending in the fore-and-aft direction of the vehicle body, and the middle portion of each side frame in the fore-and-aft direction of the vehicle body is fixed to the first support member and the second support member.

[0008] According to this configuration, the side frames are connected to the upper ends of the vertical frame portions via the first and second support members, which eliminates the need for cast steel T-shaped joints at the connection points between the portal frame and the side frames.

[0009] That is, with this configuration, a work vehicle can be realized that does not require the provision of a cast steel T-shaped joint portion at the connection portion between the portal frame and the side frame.

[0010] Furthermore, in the present invention, it is preferable that the first support member and the second support member are both formed in a triangular shape when viewed from the side, and that two sides of the triangle are formed so as to extend along the vertical frame portion and the side frame, respectively.

[0011] With this configuration, the portal frame and side frames are reinforced by the first support member and the second support member, and the structures of the first support member and the second support member tend to be simple. Therefore, it is easy to avoid an increase in manufacturing costs for the first support member and the second support member while ensuring the strength of the portal frame and the side frames.

[0012] Furthermore, in the present invention, it is preferable that a door is provided that covers at least a portion of the boarding space from the outside in the left-right direction of the vehicle body, the door is configured to be openable and closable, the vertical frame portion, the first support member, the second support member, and the side frame form a flat surface that faces the outside in the left-right direction of the vehicle body, and the door in a closed state abuts against the flat surface.

[0013] This configuration makes it difficult for a gap to form between the closed door and the portion of the vehicle body against which the door abuts, which helps to prevent sand, dust, etc. from entering the passenger compartment through the gap.

[0014] Furthermore, in the present invention, it is preferable that the first support member and the second support member are both fixed to the upper end of the vertical frame portion by welding, and that the middle portion of each side frame in the fore-and-aft direction of the vehicle body is fixed to the first support member and the second support member by bolting.

[0015] Compared to a configuration in which the fastening means between the first and second support members and the vertical frame portions, and the fastening means between the first and second support members and the side frames are all bolt fastening, this configuration tends to increase the degree of freedom in the fastening positions of the first and second support members relative to the upper ends of the vertical frame portions. Therefore, by adjusting the fastening positions of the first and second support members relative to the upper ends of the vertical frame portions when manufacturing the work vehicle, it is easy to absorb manufacturing errors in other parts. [Brief explanation of the drawings]

[0016] [Figure 1] FIG. [Figure 2] FIG. 2 is a left side view showing the configuration of the boarding space and the like. [Figure 3] FIG. 2 is a vertical sectional front view showing the configuration of a portal frame and the like. [Figure 4] FIG. 2 is a plan view showing the configuration of a portal frame and the like. [Figure 5] FIG. 2 is a plan view showing the configuration of handrails and the like. [Figure 6] 10 is a rear view showing the connection structure between the left vertical frame portion and the second portion. FIG. [Figure 7] 10 is a cross-sectional plan view showing the connection structure between the left vertical frame portion and the second portion. FIG. [Figure 8] FIG. 2 is a left side view in vertical section showing the configuration of the connecting portion and the like. [Figure 9] FIG. 2 is a longitudinal sectional left side view showing the configuration of a drink holder and the like. [Figure 10] FIG. 3 is a left side view showing the configuration of a first support member, a second support member, etc. [Figure 11] FIG. 2 is an exploded perspective view showing the configuration of a first support member, a second support member, etc. [Figure 12] FIG. 10 is a cross-sectional plan view showing the door abutting against a flat surface. [Figure 13] FIG. 10 is a vertical sectional front view showing the door abutting against a flat surface. [Figure 14] FIG. 10 is a rear view showing the configuration of the net portion and the like. [Figure 15] FIG. 4 is a longitudinal sectional left side view showing the configuration of the net portion. [Figure 16] FIG. 10 is a left side view showing the connecting structure between the rear frame and the net portion. DETAILED DESCRIPTION OF THE INVENTION

[0017] An embodiment of the present invention will be described with reference to the drawings. In the following description, unless otherwise specified, the direction of arrow F in the drawings will be referred to as "front," the direction of arrow B as "rear," the direction of arrow L as "left," and the direction of arrow R as "right." Furthermore, the direction of arrow U in the drawings will be referred to as "up," and the direction of arrow D as "down."

[0018] [Overall configuration of the work vehicle] The work vehicle 1 shown in Figure 1 is a multipurpose vehicle (utility vehicle). As shown in Figure 1, the work vehicle 1 is equipped with a body frame 2, left and right front wheels 3, and left and right rear wheels 4. The body frame 2, left and right front wheels 3, and left and right rear wheels 4 are provided under the body (body) of the work vehicle 1.

[0019] A driver's section 5 is provided in the center of the work vehicle 1 in the longitudinal direction. As shown in Figures 1 and 2, the driver's section 5 has a passenger space 6, a roof section 7, and a door 8. A passenger can board the passenger space 6. The roof section 7 is provided on the upper part of the body of the work vehicle 1. The roof section 7 covers the passenger space 6 from above.

[0020] The door 8 is provided on the left side of the body of the work vehicle 1. The door 8 covers at least a portion of the boarding space 6 from the outside in the left-right direction of the vehicle body. More specifically, the door 8 covers the front part of the boarding space 6 from the left side of the vehicle body.

[0021] In this way, the work vehicle 1 is provided with a passenger space 6 where a passenger can board, and a door 8 that covers at least a portion of the passenger space 6 from the outside in the left-right direction of the vehicle body. Note that the door 8 may be provided on both the left and right sides of the vehicle body, or the door 8 may be provided on only one of the left and right sides of the vehicle body.

[0022] A luggage rack 9 is provided behind the driver's section 5. That is, the luggage rack 9 is located on the rear side of the vehicle body relative to the passenger space 6.

[0023] In this way, the work vehicle 1 is provided with a loading platform 9 located on the rear side of the vehicle body relative to the boarding space 6.

[0024] The loading platform 9 can be used to carry transported goods (such as straw and agricultural products). An engine (not shown) is provided below the loading platform 9. The left and right front wheels 3 and the left and right rear wheels 4 are driven by power from the engine. The work vehicle 1 travels by being driven by the left and right front wheels 3 and the left and right rear wheels 4.

[0025] [Driver's frame structure] 2 and 3, the driving section 5 has left and right lower frames 10. The left lower frame 10 is provided on the left lower part of the body of the work vehicle 1. The right lower frame 10 is provided on the right lower part of the body of the work vehicle 1.

[0026] Each lower frame 10 is connected to the vehicle frame 2. Each lower frame 10 extends in the fore-and-aft direction of the vehicle body. The front portion of each lower frame 10 is in a front-upward position. The rear portion of each lower frame 10 is in a rear-upward position. The middle portion of each lower frame 10 in the fore-and-aft direction of the vehicle body is in a horizontal position.

[0027] As shown in FIGS. 2 to 4, the driver's section 5 has a protective frame 11. The protective frame 11 is a Rollover Protective Structure (ROPS). The protective frame 11 is supported by the left and right lower frames 10. The protective frame 11 surrounds the passenger space 6.

[0028] The protective frame 11 has a gate-shaped frame 12. The gate-shaped frame 12 is a gate-shaped frame provided so as to straddle the boarding space 6.

[0029] In this way, the work vehicle 1 is provided with a portal frame 12 that is provided so as to straddle the boarding space 6.

[0030] As shown in Figure 3, the portal frame 12 has a horizontal frame portion 13 and left and right vertical frame portions 14. The horizontal frame portion 13 is provided on the upper part of the vehicle body of the work vehicle 1. The horizontal frame portion 13 extends in the left-right direction of the vehicle body.

[0031] The left and right vertical frame portions 14 extend downward from the left and right ends of the horizontal frame portion 13. More specifically, the left vertical frame portion 15, which is the left vertical frame portion 14, extends downward from the left end of the horizontal frame portion 13. Furthermore, the right vertical frame portion 16, which is the right vertical frame portion 14, extends downward from the right end of the horizontal frame portion 13.

[0032] As described above, the portal frame 12 has a horizontal frame portion 13 extending along the left-right direction of the vehicle body, and left and right vertical frame portions 14 extending downward from the left and right ends, respectively, of the horizontal frame portion 13. More specifically, the portal frame 12 has the horizontal frame portion 13 extending along the left-right direction of the vehicle body, a left vertical frame portion 15 extending downward from the left end of the horizontal frame portion 13, and a right vertical frame portion 16 extending downward from the right end of the horizontal frame portion 13.

[0033] The lower end of the left vertical frame portion 15 is connected to the center of the left lower frame 10 in the longitudinal direction of the vehicle body. The lower end of the right vertical frame portion 16 is connected to the center of the right lower frame 10 in the longitudinal direction of the vehicle body.

[0034] 2 to 4, the protective frame 11 has left and right side frames 20. The left side frame 20 is provided on the upper left part of the body of the work vehicle 1. The right side frame 20 is provided on the upper right part of the body of the work vehicle 1.

[0035] Each side frame 20 extends in the fore-and-aft direction of the vehicle body. The front portion of each side frame 20 is tilted forward. The rear portion of each side frame 20 extends downward. The middle portion of each side frame 20 in the fore-and-aft direction of the vehicle body is horizontal.

[0036] In this way, the work vehicle 1 is equipped with left and right side frames 20 that extend in the fore-and-aft direction of the vehicle body. Note that "extending in the fore-and-aft direction of the vehicle body" and "extending in the fore-and-aft direction of the vehicle body" include not only a state in which there is no inclination at all with respect to the fore-and-aft direction of the vehicle body, but also a state in which the extension direction is generally in the fore-and-aft direction of the vehicle body (a state in which it extends in approximately the fore-and-aft direction).

[0037] Of the two end portions of the side frame 20, the front end portion is connected to the front end portion of the lower frame 10 via a connecting portion 21. Of the two end portions of the side frame 20, the rear end portion is connected to the rear end portion of the lower frame 10.

[0038] The middle portion of the left side frame 20 in the longitudinal direction of the vehicle body is fixed to the upper end of the left vertical frame portion 15. The middle portion of the right side frame 20 in the longitudinal direction of the vehicle body is fixed to the upper end of the right vertical frame portion 16. In other words, the middle portion of each side frame 20 in the longitudinal direction of the vehicle body is fixed to the upper end of the vertical frame portion 14.

[0039] [Boarding space] As shown in Figures 2 and 4, the passenger space 6 is provided with a front seat 30 and a rear seat 31 located rearward of the front seat 30. In this embodiment, three front seats 30 and three rear seats 31 are provided. The three front seats 30 are lined up in the left-right direction of the vehicle body. The three rear seats 31 are lined up in the left-right direction of the vehicle body.

[0040] However, the present invention is not limited to this. The number of front seats 30 provided may be any number other than three. Also, the number of rear seats 31 provided may be any number other than three.

[0041] Each front seat 30 is disposed in front of the portal frame 12. Each rear seat 31 is disposed behind the portal frame 12.

[0042] Although not particularly limited, in this embodiment, of the three front seats 30, the center front seat 30 and the right front seat 30 in the left-right direction of the vehicle body are formed integrally. In addition, the three rear seats 31 are formed integrally.

[0043] A steering wheel 32 is also provided in the passenger space 6. The steering wheel 32 is located in front of the leftmost front seat 30 of the three front seats 30. The passenger can steer the work vehicle 1 by operating the steering wheel 32.

[0044] 〔handrail〕 5, a handrail 40 is provided in the passenger space 6. The handrail 40 is located between the front seat 30 and the rear seat 31 in the longitudinal direction of the vehicle body. Therefore, a passenger sitting in the rear seat 31 can use the handrail 40.

[0045] In this way, the work vehicle 1 is provided with a handrail 40 that can be used by passengers sitting in the rear seat 31.

[0046] In this embodiment, the handrail 40 is made of metal, but the present invention is not limited to this. The handrail 40 may be made of any material other than metal.

[0047] The handrail 40 has a first portion 41, a second portion 42, and a third portion 43. The first portion 41 extends in the left-right direction of the vehicle body. The second portion 42 extends forward from the left end of the first portion 41. The third portion 43 extends forward from the right end of the first portion 41.

[0048] Thus, the handrail 40 has a first portion 41 extending along the left-right direction of the vehicle body, a second portion 42 extending forward from the left end of the first portion 41, and a third portion 43 extending forward from the right end of the first portion 41.

[0049] 5, the second portion 42 is connected to the left vertical frame portion 15. The third portion 43 is connected to the right vertical frame portion 16.

[0050] Here, we will describe in detail the connection structure between the second section 42 and the left vertical frame section 15. The connection structure between the third section 43 and the right vertical frame section 16 is the same as the connection structure between the second section 42 and the left vertical frame section 15. Therefore, the following description also applies to the connection structure between the third section 43 and the right vertical frame section 16.

[0051] 6 and 7, a contact stay 44 is connected to the front end of the second portion 42. As shown in Fig. 7, the contact stay 44 is formed in an L-shape in a plan view. The contact stay 44 is fastened to the left vertical frame portion 15 from the right side of the vehicle body (the inner side in the left-right direction of the vehicle body) by a first bolt b1.

[0052] In this embodiment, the left vertical frame portion 15 has a substantially rectangular cross section, as shown in Fig. 7. A plate-like member 45 is sandwiched between the right side surface of the left vertical frame portion 15 and the abutment stay 44. The plate-like member 45 may be fixed to the left vertical frame portion 15 (for example, by welding) or may be fixed to the abutment stay 44 (for example, by welding). Also, the plate-like member 45 does not necessarily have to be provided.

[0053] The number of first bolts b1 may be one, or may be any number equal to or greater than two.

[0054] 5 and 8, two connecting portions 46 are fixed to the first portion 41. The connecting portions 46 are provided so as to span the front seat 30 and the first portion 41.

[0055] In this way, the work vehicle 1 is provided with a connecting portion 46 extending between the front seat 30 and the handrail 40.

[0056] As shown in Fig. 8, the connecting portion 46 has a rear member 47 and a front member 48. The rear member 47 and the front member 48 both extend in the front-to-rear direction of the vehicle body. The rear end of the rear member 47 is fixed (for example, by welding) to the first part 41. The front end of the front member 48 is fixed (for example, by welding) to a seat frame 30a provided at the rear of the front seat 30. The front end of the rear member 47 and the rear end of the front member 48 are connected by a second bolt b2.

[0057] With the configuration described above, the first portion 41 is connected to the seat frame 30a via the rear member 47 and the front member 48. That is, the handrail 40 is connected to the front seat 30 via the connecting portion 46.

[0058] 8 shows a first position H1 and a second position H2. The first position H1 is the upper end position of the front seat 30 (in other words, the height position of the upper end, or the position of the upper end in the vertical direction of the vehicle). The second position H2 is the upper end position of the first portion 41. As shown in FIG. 8, the handrail 40 is provided so that the second position H2 is lower than the first position H1.

[0059] In this way, the upper end position of the first portion 41 is lower than the upper end position of the front seat 30.

[0060] As shown in Fig. 4, drink holder 50 is provided in passenger space 6. Drink holder 50 is located between front seat 30 and rear seat 31 in the longitudinal direction of the vehicle body. Therefore, a passenger sitting in rear seat 31 can use drink holder 50.

[0061] In this embodiment, three drink holders 50 are provided. However, the present invention is not limited to this. The number of drink holders 50 provided may be one, or any number greater than or equal to two.

[0062] As shown in Fig. 9, drink holder 50 has a beverage holding portion 51, an extension portion 52, and an engagement portion 53. Beverage holding portion 51 is configured to be able to hold a beverage container (e.g., a cup, a plastic bottle, etc.). Extension portion 52 extends forward from the front end portion of beverage holding portion 51. Extension portion 52 is provided so as to span beverage holding portion 51 and seat frame 30a.

[0063] The engaging portion 53 is fixed to the lower portion of the extending portion 52. The engaging portion 53 is configured to be able to engage with the first portion 41 from above.

[0064] Drink holder 50 is attached to first portion 41 by the front end of extension 52 abutting against seat frame 30a from the rear side and engagement portion 53 engaging first portion 41 from above. Drink holder 50 may be detachable from first portion 41 by releasing the engagement of engagement portion 53 with first portion 41.

[0065] As described above, in the work vehicle 1 of this embodiment, the drink holder 50 is attached to the first section 41.

[0066] [First support member and second support member] 10 and 11, the side frame 20 is made up of a front frame 55 and a rear frame 56. The front frame 55 is the front portion of the side frame 20. The rear frame 56 is the rear portion of the side frame 20. Both the front frame 55 and the rear frame 56 extend in the fore-and-aft direction of the vehicle body.

[0067] 10, the rear end of the front frame 55 and the front end of the rear frame 56 are connected by a third bolt b3. The number of third bolts b3 may be one, or any number equal to or greater than two.

[0068] 10, a first support member 61 and a second support member 62 are fixed to the upper end of the left vertical frame portion 15. Although not shown, a first support member 61 and a second support member 62 are similarly fixed to the upper end of the right vertical frame portion 16. That is, the first support member 61 and the second support member 62 are fixed to the upper end of each vertical frame portion 14.

[0069] The following describes in detail the first support member 61 and the second support member 62 fixed to the upper end of the left vertical frame portion 15. The following description also applies to the first support member 61 and the second support member 62 fixed to the upper end of the right vertical frame portion 16.

[0070] 10, the first support member 61 extends forward from the front end of the upper end of the left vertical frame portion 15 (vertical frame portion 14). The second support member 62 extends rearward from the rear end of the upper end of the left vertical frame portion 15 (vertical frame portion 14).

[0071] The first support member 61 and the second support member 62 are both formed in a triangular shape when viewed from the side, and two sides of the triangle are formed so as to extend along the left vertical frame portion 15 (vertical frame portion 14) and the side frame 20, respectively.

[0072] More specifically, in a side view, the first support member 61 is formed in a generally triangular shape. The triangle is made up of a first side 71, a second side 72, and a third side 73. The first side 71 extends along the left vertical frame portion 15 (along the longitudinal direction of the left vertical frame portion 15). The second side 72 extends along the front frame 55 (along the longitudinal direction of the front frame 55). The third side 73 is inclined upward toward the front.

[0073] Additionally, in a side view, the second support member 62 is formed in a generally triangular shape. The triangle is made up of a fourth side 74, a fifth side 75, and a sixth side 76. The fourth side 74 extends along the left vertical frame portion 15 (along the longitudinal direction of the left vertical frame portion 15). The fifth side 75 extends along the rear frame 56 (along the longitudinal direction of the rear frame 56). The sixth side 76 is inclined upward toward the rear.

[0074] It should be noted that "formed in a triangular shape when viewed from the side" includes not only a state in which the shape when viewed from the side is strictly a triangle, but also a state in which the shape when viewed from the side is approximately a triangle.

[0075] A portion of the first support member 61 corresponding to the first side 71 is fixed by welding to the upper end of the left vertical frame portion 15 in a state of abutting against the upper end of the left vertical frame portion 15 from the front side. Furthermore, a portion of the second support member 62 corresponding to the fourth side 74 is fixed by welding to the upper end of the left vertical frame portion 15 in a state of abutting against the upper end of the left vertical frame portion 15 from the rear side.

[0076] In this way, the first support member 61 and the second support member 62 are both fixed to the upper end of the vertical frame portion 14 by welding.

[0077] 10 and 11, an extending attachment portion 59 extending downward is formed at the rear end portion of the front frame 55. The extending attachment portion 59 is fastened to the left vertical frame portion 15 from the left side by a fourth bolt b4. This connects the front frame 55 (side frame 20) to the left vertical frame portion 15. The number of fourth bolts b4 may be one, or any number of four or more.

[0078] As shown in Figure 11, a front mounting portion 57 is fixed to the rear of the front frame 55. The front mounting portion 57 extends downward from the front frame 55. A rear mounting portion 58 is fixed to the front of the rear frame 56. The rear mounting portion 58 extends downward from the rear frame 56. The rear of the front frame 55 and the front of the rear frame 56 are both located in the middle of the side frame 20 in the vehicle front-rear direction. Here, the "middle part in the vehicle front-rear direction" refers to the portion between the front end and the rear end in the vehicle front-rear direction.

[0079] 11 to 13, the first support member 61 and the second support member 62 are both formed by bending a substantially rectangular plate-shaped member into a substantially triangular shape in side view. As a result, the first support member 61 and the second support member 62 both have a gap G that is open upward.

[0080] The front mounting portion 57 is inserted from above into the gap G of the first support member 61. The front mounting portion 57 and the first support member 61 are fastened together by a fifth bolt b5. As a result, the front frame 55 is fixed to the first support member 61 via the front mounting portion 57.

[0081] The rear mounting portion 58 is inserted from above into the gap G of the second support member 62. The rear mounting portion 58 and the second support member 62 are fastened together by a sixth bolt b6. As a result, the rear frame 56 is fixed to the second support member 62 via the rear mounting portion 58.

[0082] With the configuration described above, the intermediate portion of each side frame 20 in the vehicle front-rear direction is fixed to the first support member 61 and the second support member 62. More specifically, the intermediate portion of each side frame 20 in the vehicle front-rear direction is fixed to the first support member 61 and the second support member 62 by bolting.

[0083] [Flat surface] 1 and 4, the door 8 is configured to be able to swing about a swing axis Y. The swing axis Y extends in the vertical direction of the vehicle body and is located at the front end of the door 8. This allows the door 8 to be opened and closed. In FIG. 4, the door 8 in the open state is shown by a phantom line, and the door 8 in the closed state is shown by a solid line.

[0084] As shown in Figures 10, 12, and 13, the door 8 has a seal member 8a. The seal member 8a is provided on the inner side of the outer edge of the door 8 in the left-right direction of the vehicle body. Although not particularly limited, the seal member 8a may be a weather strip. Furthermore, it is preferable that the seal member 8a is flexible, and it may be made of, for example, rubber.

[0085] As shown in Figures 10, 12, and 13, the left vertical frame portion 15 (vertical frame portion 14), the first support member 61, the second support member 62, and the side frame 20 form a flat surface S that faces outward in the left-right direction of the vehicle body (specifically, the left side).

[0086] More specifically, the flat surface S is composed of a first surface S1, a second surface S2, a third surface S3, a fourth surface S4, and a fifth surface S5. The first surface S1, the second surface S2, the third surface S3, the fourth surface S4, and the fifth surface S5 are flush with one another. In other words, all five surfaces face outward in the left-right direction of the vehicle body (specifically, to the left), and the positions of these five surfaces in the left-right direction of the vehicle body are aligned.

[0087] The first surface S1 is the surface of the left vertical frame portion 15 facing outward in the left-right direction of the vehicle body (specifically, the left side). The second surface S2 is the surface of the first support member 61 facing outward in the left-right direction of the vehicle body (specifically, the left side). The third surface S3 is the surface of the second support member 62 facing outward in the left-right direction of the vehicle body (specifically, the left side).

[0088] The fourth surface S4 is the surface on the outer side in the left-right direction of the vehicle body (specifically, the left side) of the lower end of the front frame 55. The fifth surface S5 is the surface on the outer side in the left-right direction of the vehicle body (specifically, the left side) of the lower end of the rear frame 56.

[0089] 10, 12, and 13, the seal member 8a of the door 8 in the closed state abuts against the flat surface S. More specifically, as shown in Fig. 12, the seal member 8a of the door 8 in the closed state abuts against the third surface S3 from the outer side in the left-right direction of the vehicle body (specifically, the left side). Also, as shown in Fig. 13, the seal member 8a of the door 8 in the closed state abuts against the fourth surface S4 from the outer side in the left-right direction of the vehicle body (specifically, the left side).

[0090] In this way, the door 8 abuts against the flat surface S in the closed state.

[0091] [Internet Club] 3, 4, and 14, the work vehicle 1 is provided with a net portion 80. The net portion 80 is configured to cover at least a portion of the riding space 6 from the outside of the riding space 6.

[0092] More specifically, the net portion 80 is disposed in a vertical position and is disposed in a state in which it covers at least a portion of the riding space 6 from the rear side of the vehicle body. In this embodiment, the net portion 80 is disposed in a state in which it covers the upper part of the riding space 6 from the rear side of the vehicle body.

[0093] However, the present invention is not limited to this. The net portion 80 may be in any position (for example, a horizontal position) other than a vertical position. Furthermore, the net portion 80 may be arranged so as to cover at least a portion of the passenger space 6 from a direction other than the rear side of the vehicle body (for example, the upper side, left side, right side, etc. of the vehicle body). Furthermore, the net portion 80 may be arranged so as to cover the lower part of the passenger space 6, or so as to cover the entire passenger space 6 (upper and lower parts).

[0094] In this way, the work vehicle 1 is provided with a net portion 80 that covers at least a portion of the riding space 6 from the outside of the riding space 6.

[0095] The net portion 80 in this embodiment is disposed between the passenger space 6 and the luggage rack 9.

[0096] 14, the net portion 80 has four mesh portions 81 arranged in the left-right direction of the vehicle body. Each mesh portion 81 is formed in a net shape. A passenger riding in the passenger space 6 can see the outside of the passenger space 6 (more specifically, the rear side of the passenger space 6) through each mesh portion 81.

[0097] The net portion 80 also has a frame portion 82. The frame portion 82 is formed in a window frame shape surrounding the four mesh portions 81. That is, the net portion 80 has the mesh portions 81 formed in a mesh shape and the window frame-shaped frame portion 82 surrounding the mesh portions 81. The net portion 80 is formed from a single sheet metal member.

[0098] 14 to 16, bent portions 83, which are bent sections, are formed on at least a portion of the outer edge of frame portion 82. More specifically, bent portions 83 are formed on at least the upper end and the lower end of frame portion 82.

[0099] The bent portion 83 will be described in detail below. In this embodiment, an upper bent portion 84, a lower bent portion 85, an upper left bent portion 86, and an upper right bent portion 87 are formed on the outer edge of the frame portion 82. The upper bent portion 84, the lower bent portion 85, the upper left bent portion 86, and the upper right bent portion 87 are all portions bent toward the front of the vehicle body. In other words, the upper bent portion 84, the lower bent portion 85, the upper left bent portion 86, and the upper right bent portion 87 are all bent portions 83.

[0100] The upper bent portion 84 is formed at the upper end of the frame portion 82. The upper bent portion 84 is horizontally oriented and extends in the left-right direction of the vehicle body. The upper bent portion 84 is provided between the upper left bent portion 86 and the upper right bent portion 87. The left end of the upper bent portion 84 may be connected (for example, by welding) to the right end of the upper left bent portion 86. The right end of the upper bent portion 84 may be connected (for example, by welding) to the left end of the upper right bent portion 87.

[0101] The lower bent portion 85 is formed at the lower end of the frame portion 82. The lower bent portion 85 is horizontally oriented and extends in the left-right direction of the vehicle body. The lower bent portion 85 is provided so as to extend from the left end to the right end of the frame portion 82.

[0102] The upper left bent portion 86 is formed at the left end portion of the upper end portion of the frame portion 82. The upper left bent portion 86 is inclined upward to the right.

[0103] The upper right bent portion 87 is formed at the right end portion of the upper end portion of the frame portion 82. The upper right bent portion 87 is inclined upward to the left.

[0104] In this embodiment, the bent portions 83 are not formed at the left and right ends of the frame portion 82.

[0105] 14 and 16, the rear ends of the left and right rear frames 56 extend in the vertical direction of the vehicle body. An upper stay 64 and a lower stay 65 are fixed (for example, by welding) to the rear ends of the left and right rear frames 56. The upper stay 64 is located above the lower stay 65.

[0106] Additionally, a first mounting portion 91, a second mounting portion 92, a third mounting portion 93, and a fourth mounting portion 94 are fixed (for example, by welding) to the outer edge of the frame portion 82. The first mounting portion 91, the second mounting portion 92, the third mounting portion 93, and the fourth mounting portion 94 are all formed in a channel shape.

[0107] The first mounting portion 91 is fixed to the upper part at the left end of the frame portion 82. The second mounting portion 92 is fixed to the upper part at the right end of the frame portion 82. The third mounting portion 93 is fixed to the lower part at the left end of the frame portion 82. The fourth mounting portion 94 is fixed to the lower part at the right end of the frame portion 82.

[0108] The first mounting portion 91 is fastened to the left upper stay 64 by a seventh bolt b7. The second mounting portion 92 is fastened to the right upper stay 64 by an eighth bolt b8. The third mounting portion 93 is fastened to the left lower stay 65 by a ninth bolt b9. The fourth mounting portion 94 is fastened to the right lower stay 65 by a tenth bolt b10.

[0109] With this configuration, the net portion 80 is connected to the rear ends of the left and right rear frames 56 via the first mounting portion 91, the second mounting portion 92, the third mounting portion 93, and the fourth mounting portion 94. In other words, the net portion 80 is connected to the left and right side frames 20. The number of each of the seventh bolt b7, the eighth bolt b8, the ninth bolt b9, and the tenth bolt b10 may be one, or any number equal to or greater than two.

[0110] FIG. 14 shows the rear roof frame 7a. The rear roof frame 7a is a frame in the roof portion 7. The rear roof frame 7a is located at the rear of the roof portion 7. The rear roof frame 7a is provided across the left and right rear frames 56. The rear roof frame 7a is connected to the left and right rear frames 56. Although not particularly limited, a connecting stay (not shown) may be provided to connect the net portion 80 and the rear roof frame 7a.

[0111] According to the configuration described above, the side frame 20 is connected to the upper end of the vertical frame portion 14 via the first support member 61 and the second support member 62. Therefore, it is not necessary to provide a cast steel T-shaped joint portion at the connection portion between the portal frame 12 and the side frame 20.

[0112] That is, according to the configuration described above, a work vehicle 1 can be realized that does not require the provision of a cast steel T-shaped joint at the connection portion between the portal frame 12 and the side frame 20.

[0113] Other Embodiments (1) The arrangement of some or all of the components may be reversed left to right.

[0114] (2) An electric motor may be provided instead of an engine as the power source for the work vehicle 1. Also, a hybrid system equipped with an engine and an electric motor may be used.

[0115] (3) The connecting portion 46 does not have to be provided.

[0116] (4) The upper end position of the first portion 41 may be higher than the upper end position of the front seat 30.

[0117] (5) The drink holder 50 does not have to be provided.

[0118] (6) The first support member 61 and the second support member 62 may have any shape when viewed from the side.

[0119] (7) The door 8 does not have to be provided.

[0120] (8) The first support member 61 and the second support member 62 may be fixed to the vertical frame portion 14 by any means other than welding.

[0121] (9) The means for fixing the side frame 20 to the first support member 61 and the second support member 62 may be any means other than bolt fastening.

[0122] (10) Bent portions 83 may be formed at the left and right ends of the frame portion 82.

[0123] (11) The bent portion 83 may not be formed at either the upper or lower end of the frame portion 82.

[0124] (12) The loading platform 9 does not have to be provided.

[0125] (13) The net portion 80 does not have to be connected to the left and right side frames 20.

[0126] (14) The first attachment portion 91, the second attachment portion 92, the third attachment portion 93, and the fourth attachment portion 94 may be included in the net portion 80.

[0127] (15) The net portion 80 may be formed from multiple members.

[0128] The configurations disclosed in the above-described embodiments (including other embodiments, the same applies hereinafter) can be applied in combination with the configurations disclosed in other embodiments, unless a contradiction arises. Furthermore, the embodiments disclosed in this specification are merely examples, and the present invention is not limited to these, and can be modified as appropriate within the scope of the purpose of the present invention. [Industrial Applicability]

[0129] The present invention can be used in a work vehicle that has a passenger space in which a passenger can ride. [Explanation of symbols]

[0130] 1: Work vehicle 6: Boarding space 8: Door 12: Gate frame 13: Horizontal frame part 14: Vertical frame section 20: Side frame 61: First support member 62: Second support member S: Flat surface

Claims

1. A boarding space in which passengers can board; a portal frame provided so as to span the boarding space, the portal frame includes a horizontal frame portion extending along the left-right direction of the vehicle body, and left and right vertical frame portions extending downward from left and right ends of the horizontal frame portion, respectively; A first support member and a second support member are fixed to the upper end of each of the vertical frame portions, the first support member extends forward from a front end portion of an upper end portion of the vertical frame portion, the second support member extends rearward from a rear end of the upper end of the vertical frame portion, It has left and right side frames that extend in the fore-and-aft direction of the vehicle body, A work vehicle in which a vehicle body longitudinal direction intermediate portion of each of the side frames is fixed to the first support member and the second support member.

2. The work vehicle according to claim 1, wherein the first support member and the second support member are both formed in a triangular shape when viewed from the side, and two sides of the triangle are formed so as to extend along the vertical frame portion and the side frame, respectively.

3. a door that covers at least a portion of the boarding space from the outside in the left-right direction of the vehicle body; The door is configured to be openable and closable, a flat surface that is a flat surface facing outward in the left-right direction of the vehicle body is formed by the vertical frame portion, the first support member, the second support member, and the side frame, 3. The work vehicle according to claim 1, wherein the door in the closed state abuts against the flat surface.

4. the first support member and the second support member are both fixed to upper ends of the vertical frame portions by welding, 3. The work vehicle according to claim 1, wherein a middle portion of each of the side frames in the longitudinal direction of the vehicle body is fixed to the first support member and the second support member by fastening bolts.

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