JP5985918B2 - Work vehicle body structure - Google Patents

Description

  The present invention relates to a vehicle body structure of a work vehicle in which a storage space is formed on the back side of a boarding step.

In a tractor that is an example of a work vehicle, a boarding step (step) is generally configured by a tread surface portion and a reinforcing portion that extends downward by bending from the front edge and the outer edge of the tread surface portion. Yes (see, for example, Patent Document 1).
Also, an auxiliary step that is located between the ground and the boarding step to facilitate getting on and off the driving unit is connected to both lateral ends of the boarding step (driving unit floor) via a pair of front and rear supports. (See, for example, Patent Document 2).

JP-A-8-108754 (paragraph number 0013, FIGS. 1 to 3) JP 2007-125931 A (paragraph numbers 0018 to 0023, FIGS. 1 to 4)

  In recent years, in a working vehicle such as a tractor, it has been considered to effectively use the back side of the boarding step for a storage space such as a fuel tank or a battery. However, in the above configuration, the reinforcing portion extending downward from the outer edge of the tread surface portion, or the auxiliary steps connected to both lateral ends of the boarding step interferes with the storage space on the back side of the boarding step. Inconveniences such as attachment / detachment of a fuel tank, a battery, etc., and maintenance of the fuel tank, battery, etc. provided in the storage space are difficult to perform.

  An object of the present invention is to facilitate attachment / detachment of a fuel tank, a battery, and the like to / from a storage space formed on the back side of the boarding step, and maintenance of the fuel tank, battery, etc. provided in the storage space.

The invention according to claim 1 of the present invention is a vehicle body structure for a work vehicle , wherein a storage space is formed on the back side of the boarding step , and a fuel tank for storing fuel supplied to the engine is stored in the storage space .
A cover member having a vertical cover surface covering the storage space from the lateral outer side is detachably mounted on the lateral outer end of the boarding step,
The cover member has an upper end extending part extending from the upper end of the cover surface toward the boarding step, a front end extending part extending from the front end of the cover surface toward the boarding step, and the cover surface A rear end extending portion extending from the rear end toward the boarding step,
Connecting the front end of the upper end extension part and the upper end of the front end extension part, and connecting the rear end of the upper end extension part and the upper end of the rear end extension part;
An outer edge portion formed from the upper end extension portion, the front end extension portion, and the rear end extension portion is configured to be provided in the cover member ,
The cover member forms a notch for exposing a fueling part provided in the fuel tank from the front end extending part to the cover surface .

The invention according to claim 2 of the present invention is the invention according to claim 1,
The boarding step includes a reinforcing portion that hangs from the front and rear ends of the left and right ends of the step surface,
Each of the upper end extension part, the front end extension part, and the rear end extension part is configured as a connection part that connects to corresponding portions of the step surface of the boarding step and the front and rear reinforcement parts.

The invention according to claim 3 of the present invention is the vehicle body structure of a work vehicle in which a storage space is formed on the back side of the boarding step.
A cover member having a vertical cover surface covering the storage space from the lateral outer side is detachably mounted on the lateral outer end of the boarding step,
The cover member has an upper end extending part extending from the upper end of the cover surface toward the boarding step, a front end extending part extending from the front end of the cover surface toward the boarding step, and the cover surface A rear end extending portion extending from the rear end toward the boarding step,
Connecting the front end of the upper end extension part and the upper end of the front end extension part, and connecting the rear end of the upper end extension part and the upper end of the rear end extension part;
An outer edge portion formed from the upper end extension portion, the front end extension portion, and the rear end extension portion is configured to be provided in the cover member,
The boarding step includes a reinforcing portion that hangs from the front and rear ends of the left and right ends of the step surface,
Each of the upper end extension part, the front end extension part, and the rear end extension part is configured as a connection part that connects to corresponding portions of the step surface of the boarding step and the front and rear reinforcement parts.

In the above invention, the fuel tank, the battery, and the like provided in the storage space on the back side of the boarding step can be protected by the cover member. And, when attaching / detaching the fuel tank or battery to the storage space, or when performing maintenance on the fuel tank or battery deployed in the storage space, by removing the cover member from the lateral outer end of the boarding step, Storage space can be opened laterally outward of the vehicle body, and fuel tanks and batteries can be attached to and detached from the storage space from the lateral side of the vehicle body, and maintenance of fuel tanks and batteries deployed in the storage space is easy to perform. Become.

In addition, by providing the cover member with an outer edge portion including an upper end extension portion, a front end extension portion, and a rear end extension portion, the shape retention strength of the cover member can be increased. By attaching to the lateral outer end, the strength on the lateral outer end side of the boarding step can be increased.

Therefore, usually, by attaching a cover member with high shape retention strength to the lateral outer edge of the boarding step, it is possible to protect the fuel tank, battery, etc. deployed in the storage space on the back side of the boarding step while boarding. High strength can be secured as a step. And, when attaching or detaching the fuel tank or battery to the storage space, or when performing maintenance on the fuel tank or battery deployed in the storage space, by removing the cover member from the lateral outer end of the boarding step, The workability in the attachment / detachment and maintenance can be improved.

In said invention, each of an upper end extension part, a front-end extension part, and a rear-end extension part can be connected with the corresponding location of the step surface of a boarding step, and the reinforcement part before and behind. Thereby, compared with the case where any one of the upper end extension portion, the front end extension portion, and the rear end extension portion is connected to the boarding step, the cover member having a higher shape retention strength is provided at the lateral outer end of the boarding step. As a reinforcing member that increases the strength at the side, it can function more effectively.
Therefore, the boarding step can be reinforced more effectively by the cover member.

The invention according to claim 4 of the present invention is the invention according to any one of claims 1 to 3 ,
The cover member is equipped with an auxiliary step for getting on and off the boarding step.

  In the above invention, the auxiliary step can be utilized when getting on and off the boarding step by attaching a cover member equipped with the auxiliary step to the lateral outer end of the boarding step. Thereby, boarding / alighting with respect to the boarding step can be facilitated.

  And, when attaching or detaching the fuel tank or battery to the storage space, or when performing maintenance on the fuel tank or battery deployed in the storage space, by removing the cover member from the lateral outer end of the boarding step, At the same time, the auxiliary step can be removed from the lateral outer end of the boarding step, and the storage space can be opened laterally outward of the vehicle body.

  In other words, compared with the case where the cover member and the auxiliary step are individually attached and detached, the attachment and detachment of the fuel tank and the battery to the storage space or the storage space is improved while improving the detachability of the cover member and the auxiliary step. It is possible to prevent the cover member and the auxiliary step from getting in the way during maintenance on the deployed fuel tank or battery.

  Therefore, it is possible to improve the boarding / exiting performance without lowering the detachability of the fuel tank, the battery, etc. with respect to the storage space on the back side of the boarding step, and the maintainability with respect to the fuel tank, the battery, etc. arranged in the storage space. Can be planned.

The invention according to claim 5 of the present invention is the invention according to claim 4,
Forming an opening in the cover surface of the cover member that allows the insertion of an arm portion extending upward from the step portion of the auxiliary step;
The extended end of the arm portion to be inserted into said opening, said comprising a first weld portion to be welded to the upper extending portion and the peripheral portion of the opening in the arm portion to be inserted into the opening an adjacent portion, and a second welding portion is welded to the periphery.

In said invention, an auxiliary | assistant step can be firmly welded to a cover member, and, thereby, an auxiliary | assistant step can be functioned as a reinforcement member which raises the shape retention strength of a cover member. Then, by attaching the cover member with increased shape retaining strength to the lateral outer end of the boarding step, the strength on the lateral outer end of the boarding step can be further increased.
Therefore, the strength of the cover member and the boarding step can be improved while improving the boarding / exiting performance with respect to the boarding step.

The invention according to claim 6 of the present invention is the vehicle body structure of a work vehicle in which a storage space is formed on the back side of the boarding step.
A cover member having a vertical cover surface covering the storage space from the lateral outer side is detachably mounted on the lateral outer end of the boarding step,
The cover member has an upper end extending part extending from the upper end of the cover surface toward the boarding step, a front end extending part extending from the front end of the cover surface toward the boarding step, and the cover surface A rear end extending portion extending from the rear end toward the boarding step,
Connecting the front end of the upper end extension part and the upper end of the front end extension part, and connecting the rear end of the upper end extension part and the upper end of the rear end extension part;
An outer edge portion formed from the upper end extension portion, the front end extension portion, and the rear end extension portion is configured to be provided in the cover member,
The cover member is equipped with an auxiliary step for getting on and off the boarding step,
Forming an opening in the cover surface of the cover member that allows the insertion of an arm portion extending upward from the step portion of the auxiliary step;
The extended end of the arm portion to be inserted into said opening, said comprising a first weld portion to be welded to the upper extending portion and the peripheral portion of the opening in the arm portion to be inserted into the opening an adjacent portion, and a second welding portion is welded to the periphery.

It is a right view of a tractor. It is a top view of a tractor. It is the perspective view (A) of the principal part which shows the state which removed the left cover member, and the perspective view (B) of the principal part which shows the state which attached the left cover member. It is the perspective view (A) of the principal part which shows the state which removed the right side cover member, and the perspective view (B) of the principal part which shows the state which attached the right side cover member. It is a vertical rear view of the principal part which shows the attachment structure of a cover member, etc. It is a vertical right view of the principal part which shows the attachment structure of a cover member (right side), etc. It is a vertical front view of the principal part which shows the attachment structure of a cover member (right side), etc. It is a perspective view which shows the structure of the left cover member.

  Hereinafter, an embodiment in which the vehicle body structure of a work vehicle according to the present invention is applied to a tractor that is an example of a work vehicle will be described with reference to the drawings as an example of an embodiment for carrying out the present invention.

  As shown in FIGS. 1 and 2, the tractor exemplified in the present embodiment has a clutch housing 2 connected to the rear portion of the engine 1 mounted on the front portion thereof, and a transmission case (hereinafter referred to as a frame) that is used as a frame. , Abbreviated as T / M case) 3 is connected so as to extend from the rear part of the clutch housing 2 toward the rear part of the vehicle body. A pair of left and right front wheels 5 are steerable and drivably disposed on the left and right sides of the engine bonnet 4 that covers the engine 1 and the like from above, and the left and right sides of the rear part of the T / M case 3 are left and right. The pair of rear wheels 6 is arranged to be drivable and brakeable, and is configured as a four-wheel drive type.

  A boarding operation unit 7 is formed above the T / M case 3. A boarding step 8 made of a sheet metal that covers the front side of the T / M case 3 and the like from above is laid in the boarding operation unit 7, and a steering wheel 9 for driving front wheels, a driver seat 10, and the like are provided. . A pair of left and right rear fenders 11 that cover the upper side of the left and right rear wheels 6 from the boarding operation part side are provided at the left and right sides of the driver seat 10. A protective frame 12 formed in an inverted U shape in a front-rear direction view is erected at a rear portion of the driver seat 10.

  At the rear part of the T / M case 3, a pair of left and right lift arms 13 and a left and right lift arms 13 that enable a lifting / lowering operation of a working device (not shown) such as a rotary tiller or a plow connected to the rear part of the tractor are provided. A hydraulic lift cylinder 14 that swings in the vertical direction and a PTO shaft 15 that enables the removal of working power when a drive type working device such as a rotary tiller is connected to the rear of the tractor are provided. doing.

  As shown in FIGS. 1 to 5, the boarding step 8 is a step surface formed such that the left and right ends on the front side are positioned in front of the left and right rear fenders 11, and the rear side enters between the left and right rear fenders 11. 8A is provided. Then, the shape retaining strength at the left and right intermediate portion 8Aa is increased by bending the left and right intermediate portion 8Aa of the step surface 8A facing the T / M case 3 so as to bulge upward. In addition, by welding a plurality of reinforcing members 16 made of channel steel, etc., to the positions near the left and right lateral outer portions spaced a predetermined distance from the left and right intermediate portion 8Aa, the positions near the left and right lateral outer portions are reinforced. doing. The reinforced positions near the left and right lateral outer side portions are received and supported from below by left and right support members 17 extending from the T / M case 3.

  As shown in FIGS. 3 to 7, the front end of the boarding step 8 is bent downward in a region extending from a position adjacent to the engine bonnet 12 to the lateral outer end of the boarding step 8, A pair of left and right front reinforcing portions 8B that reinforce the left and right ends are formed. On the rear side of the boarding step 8, a plurality of rear reinforcing portions 8 </ b> C are formed to reinforce the left and right ends on the rear side in the boarding step 8 by bending downward at locations facing the left and right rear fenders 11. .

  A storage space 18 that is divided into left and right by the T / M case 3 is secured in the vicinity of the back surface on the back surface side of the boarding step 8. In the storage space 18, two oil filters 19 and 20 detachably attached to the right side surface of the T / M case 3, and two fuels made of a resin-made blow molded product that stores fuel supplied to the engine 1 are stored. Tanks 21 and 22 are provided.

  As shown in FIGS. 3 to 5, the left and right fuel tanks 21 and 22 are distributed on the left and right sides of the T / M case 3. The portions facing the rear fender 11 are formed to be curved along the rear fender 11. At the right front end of the right fuel tank 22, a cylindrical oil supply portion 22A that enables fuel supply from the right front is integrally formed. The left and right fuel tanks 21 and 22 allow fuel flow from the right fuel tank 22 to the left fuel tank 21 and prevent fuel flow from the left fuel tank 21 to the right fuel tank 22. A communication pipe 23 provided with a check valve (not shown) is connected across the left and right fuel tanks 21 and 22.

  As shown in FIGS. 3 and 5, the left fuel tank 21 is detachably connected to the T / M case 3 via a left support frame 24 that supports the left fuel tank 21 so as to cover the left fuel tank 21 from below. Yes. The left support frame 24 is formed such that its left end 24A is bent upward in a crank shape along the left end of the left fuel tank 21 as viewed in the front-rear direction, so that the left end 24A becomes the left end of the left fuel tank 21. It is comprised so that it may function as a protective cover which covers and protects the lower part side of a part from a lateral outer side.

  As shown in FIGS. 4 and 5, the right fuel tank 22 is detachably connected to the T / M case 3 via a right support frame 25 that supports the right fuel tank 22 so as to cover the right fuel tank 22 from below. Yes. The right support frame 25 has its right end portion 25A bent upward in a crank shape along the right end portion of the right fuel tank 22 as viewed in the front-rear direction, so that the right end portion 25A is bent to the right end of the right fuel tank 22. It is comprised so that it may function as a protective cover which covers and protects the lower part side of a part from the side outside.

  As shown in FIGS. 3 to 5, the communication pipe 23 is protected by being covered from below by a protective member 26 made of a channel steel material extending over the left and right support frames 24 and 25.

  As shown in FIGS. 3 to 8, cover members 27 and 28 having vertical cover surfaces 27 </ b> A and 28 </ b> A that cover the storage space 18 from the lateral outer side are detachable at the left and right lateral outer ends of the boarding step 8. Equipped. The left and right cover members 27 and 28 have upper end extending portions 27B and 28B extending from the upper ends of the cover surfaces 27A and 28A toward the boarding step 8, and from the front ends of the cover surfaces 27A and 28A toward the boarding step 8. Front end extending portions 27C, 28C and rear end extending portions 27D, 28D extending toward the boarding step 8 from the rear ends of the cover surfaces 27A, 28A. Each upper end extending portion 27B, 28B has its front end welded to the upper end of the adjacent front end extending portion 27C, 28C, and its rear end is welded to the upper end of the adjacent rear end extending portion 27D, 28D. . As a result, the left and right cover members 27, 28 are formed in a substantially inverted U shape in a side view of the vehicle body from the upper end extending portions 27B, 28B, the front end extending portions 27C, 28C, and the rear end extending portions 27D, 28D. The outer edge portions 27E and 28E are formed.

  The upper end extending portions 27B and 28B are formed on the corresponding lateral end portions 8Ab of the left and right lateral end portions 8Ab of the step surface 8A extending laterally outward from the front and rear reinforcing portions 8B and 8C in the boarding step 8. In a state of being bonded to the surface, the connecting portion A is configured to be capable of bolt connection at three locations with the corresponding lateral end portion 8Ab. Each of the front end extending portions 27C and 28C has extended end portions 27Ca and 28Ca extending to the boarding step side with respect to the upper end extending portions 27B and 28B of the front reinforcing portions 8B corresponding to the left and right of the boarding step 8. In a state where it is joined to the back surface, it is configured to function as a connecting portion B capable of bolt connection at one location with the corresponding front reinforcing portion 8B. The rear end extending portions 27D and 28D are in a state in which the extended end portions 27Da and 28Da extending to the boarding step side with respect to the upper end extending portions 27B and 28B are joined to the surfaces of the corresponding left and right rear fenders 11. Thus, it is configured to function as a connecting portion C capable of bolt connection with the corresponding rear fender 11 at one place. The left and right rear fenders 11 are configured such that bolts can be connected to the corresponding left and right rear reinforcing portions 8 </ b> C of the boarding step 8.

  That is, the upper end extending portions 27B, 28B of the cover members 27, 28 can be directly bolted to the corresponding lateral end portions 8Ab of the step surface 8A of the boarding step 8, and the cover members 27, 28 can be connected. The front end extending portions 27C and 28C can be directly bolted to the corresponding front reinforcing portion 8B of the boarding step 8, and the rear end extending portions 27D and 28D of the respective cover members 27 and 28 can be boarded. Bolts can be connected to the corresponding rear reinforcing portions 8C of step 8 via the rear fender 11.

  From the above configuration, the fuel tanks 21, 22 and the like provided in the storage space 18 on the back side of the boarding step 8 can be protected by the left and right cover members 27, 28. When the fuel tanks 21 and 22 are attached to and detached from the storage space 18 or when maintenance is performed on the fuel tanks 21 and 22 provided in the storage space 18, the cover member starts from the lateral outer end of the boarding step 8. By removing 27 and 28, the storage space 18 can be opened laterally outward of the vehicle body, the fuel tanks 21 and 22 are attached to and detached from the storage space 18 from the lateral lateral side of the vehicle body, and the storage space 18 Maintenance of the deployed fuel tanks 21, 22, etc. can be facilitated. Further, since the fuel tanks 21 and 22 can be easily attached and detached, maintenance workability for the T / M case 3 and the like performed by removing the fuel tanks 21 and 22 can be improved.

  Further, the cover members 27 and 28 are provided with substantially inverted U-shaped outer edge portions 27E and 28E comprising upper end extending portions 27B and 28B, front end extending portions 27C and 28C, and rear end extending portions 27D and 28D, respectively. Thus, the shape retention strength of the cover members 27 and 28 can be increased, and the upper end extension portions 27B and 28B and the front end extension portions 27C and 28C of the cover members 27 and 28 having increased shape retention strength. And the rear end extending portions 27D and 28D are respectively connected to corresponding portions of the step surface 8A of the boarding step 8 and the front and rear reinforcing portions 8B and 8C by the bolts at the lateral outer end side of the boarding step 8. The strength of can be increased.

  As shown in FIGS. 2, 3, 5, and 8, the left cover member 27 is equipped with an auxiliary step 29 for getting on and off the boarding step 8. The auxiliary step 29 is made of a sheet metal bent and formed into a U shape including a step portion 29A subjected to anti-slip processing and a pair of left and right arm portions 29B extending upward from both front and rear ends of the step portion 29A. Is adopted. In the cover surface 27A of the left cover member 27, a slit 27F is formed as a pair of front and rear openings 27F that allow the arm portions 29B of the auxiliary step 29 to be inserted. Then, the extending ends 29Ba of the arm portions 29B inserted through the slits 27F are welded to the upper end extending portions 27B of the cover member 27, and the peripheral portions of the slits 27F in the arm portions 29B inserted through the slits 27F. The auxiliary step 29 is integrally provided on the left cover member 27 by welding a portion 29Bb adjacent to 27Fa to the peripheral portion 27Fa of the slit 27F.

  From the above configuration, the auxiliary step 29 is usually used when getting on and off the boarding step 8 by attaching the left cover member 27 having the auxiliary step 29 to the lateral outer end on the left side of the boarding step 8. This makes it easy to get on and off the boarding step 8.

  When the fuel tanks 21 and 22 are attached to and detached from the storage space 18 or when maintenance is performed on the fuel tanks 21 and 22 provided in the storage space 18, the left cover member 27 is placed on the left side of the boarding step 8. At the same time, the auxiliary step 29 can be removed from the left lateral outer end of the boarding step 8, and the left cover member 27 and the auxiliary step 29 are individually attached and detached. Compared with the case where the fuel tanks 21 and 22 such as the fuel tanks 21 and 22 are attached to or removed from the storage space 18 while improving the detachability of the cover member 27 and the auxiliary step 29 on the left side. The left cover member 27 and the auxiliary step 29 are obstructive when performing maintenance on the 22 or the like. It is possible to stop.

  Also, the auxiliary step 29 can function as a reinforcing member that increases the shape retention strength of the left cover member 27, and the strength of the auxiliary step 29 can be increased. By attaching the cover member 27 to the lateral outer end on the left side of the boarding step 8, the strength on the lateral outer end side on the left side of the boarding step 8 can be further increased.

  As shown in FIGS. 1, 4, 5, and 6, the right cover member 28 is provided with a notch 28 </ b> F for exposing the fueling portion 22 </ b> A provided in the right fuel tank 22, and its front end extending portion. It is formed from 28C to the cover surface 28A. Thereby, the refueling portion 22A can be exposed and arranged in the front portion of the right cover member 28 that does not interfere with the movement on the boarding step near the boarding step 8, and is portable for refueling. When the auxiliary tank (not shown) is used to supply fuel from the auxiliary tank to the fuel tanks 21 and 22 via the oil supply section 22A, the boarding step 8 can be used as a mounting table for the auxiliary tank. Refueling work can be lightened.

  As shown in FIGS. 3, 5, and 8, the left cover member 27 extends downward from the upper end extension portion 27 </ b> B in each of the cover surface 27 </ b> A, the front end extension portion 27 </ b> C, and the rear end extension portion 27 </ b> D. By making the extended length (vertical length) longer than the extended length (left and right width) from the cover surface 27A of the upper end extending portion 27B to the boarding step 8, the lower end of the left cover member 27 is left-supported. It is formed so as to be close to the left end 24 </ b> A of the frame 24. As a result, the left end portion of the left fuel tank 21 facing laterally outward can be more reliably covered and protected from laterally outward by the left cover member 27 and the left end portion 24A of the left support frame 24.

  As shown in FIGS. 4 to 7, the right cover member 28 has a length extending downward from the upper end extension portion 28B in each of the cover surface 28A, the front end extension portion 28C, and the rear end extension portion 28D ( The lower end of the right cover member 28 is the right end of the right support frame 25 by making the vertical length) longer than the extension length (left-right width) from the cover surface 28A of the upper end extension 28B to the boarding step 8. It is formed so as to be close to the portion 25A. As a result, the right end portion of the right fuel tank 22 facing laterally outward can be more reliably covered and protected from laterally outward by the right cover member 28 and the right end portion 25A of the right support frame 25.

  As shown in FIGS. 3 to 5 and 7, the step surface 8 </ b> A of the boarding step 8 is formed such that the left and right lateral ends 8 </ b> Ab are lower than the other portions by the plate thickness of the cover members 27 and 28. doing. Thus, in the state where the cover members 27 and 28 corresponding to the left and right lateral outer ends of the boarding step 8 are attached, the step surface 8A of the boarding step 8 and the upper end extending portions 27B and 28B of the cover members 27 and 28 are mounted. The surface height can be aligned.

    [Another embodiment]

[1] The work vehicle may be a hybrid specification equipped with the engine 1 and a motor generator.

[2] The boarding step 8 may not include the front and rear reinforcing portions 8B and 8C. Moreover, what was provided with connection part AC only for the connection with the cover members 27 and 28 may be used.

[3] The boarding step 8 may be such that one of the lateral outer ends faces the outside of the vehicle. In this case, the cover members 27 and 28 may be provided with a single member that can be attached to and detached from one lateral outer end portion thereof.

[4] A resin blow-molded product or the like may be employed as the boarding step 8. In this case, the boarding step 8 may be provided with an insert nut for bolt connection.

[5] The storage space 18 may not be divided into left and right by the T / M case 3. The storage space 18 stores hydraulic pressure such as an auxiliary control valve that is additionally provided as a drive for a battery, an electric wire harness, a muffler (DPF muffler), an optional working device (for example, a front loader), and the like. Equipment, hydraulic piping, fuel piping, and a motor generator for a hybrid work vehicle may be used.

[6] As the left and right cover members 27, 28, the left cover member 27 is formed with a notch for exposing the oil supply portion, and the right cover member 28 is provided with an auxiliary step 29 for getting on and off. It may be. Alternatively, the left and right cover members 27 and 28 may be provided with auxiliary steps 29 for getting on and off, and the left and right cover members 27 and 28 are not formed with notches for exposing the oil supply portion. It may be configured as described above.

[7] The cover members 27 and 28 may be configured to be connected to the lateral outer end portion of the boarding step 8 in an externally fitted or internally fitted state.

[8] As the cover members 27 and 28, the upper end extending portions 27B and 28B, the front end extending portions 27C and 28C, and the rear end extending portions 27D and 28D are respectively connected to the step surface 8A of the riding step 8 and the front and rear It may be configured to be engaged and connected to a corresponding portion of the reinforcing portions 8B and 8C. Further, it may be configured to be connected to the lateral outer end portion of the boarding step 8 by a combination of engagement connection and bolt connection.

[9] As the cover members 27 and 28, rear end extending portions 27 </ b> D and 28 </ b> D (connecting portion C), the rear reinforcing portion 8 </ b> C and the rear fender 11 of the boarding step 8, and the rear end extending portions 27 </ b> D and 28 </ b> D (connecting portion). C) and the rear reinforcing portion 8C of the boarding step 8 between the rear fender 11 or the rear end extending portions 27D and 28D (connecting portion C) between the rear reinforcing portion 8C and the rear fender 11 of the riding step 8. It may be configured to be bolted in a state of being sandwiched between them.

[10] The auxiliary step 29 may be formed in an inverted T shape by extending upward a single arm portion 29B made of steel pipe material from the front and rear intermediate portions of the step portion 29A.

[11] The shape of the opening 27 </ b> F formed in the cover surface 27 </ b> A of the cover member 27 can be variously changed according to the cross-sectional shape of the arm portion 29 </ b> B of the auxiliary step 29.

[12] With the arm portion 29B of the auxiliary step 29 along the back surface of the cover surface 27A of the cover member 27, the extension end is welded to the upper end extension portion 27B of the cover member 27, and the cover The auxiliary step 29 may be integrally provided on the cover member 27 by welding a portion adjacent to the back surface of the surface 27A to the back surface of the cover surface 27A.

[13] The auxiliary step 29 may be detachably bolted to the cover member 27.

[14] The cover members 27 and 28 may be configured to be usable as support members such as an auxiliary control valve for driving the front loader equipped as an option.

  The vehicle body structure of a work vehicle according to the present invention can be applied to a work vehicle such as a tractor, a riding rice transplanter, or a combine in which a storage space is formed on the back side of the boarding step.

1 engine 8 boarding step 8A step surface 8B reinforcement part 8C reinforcement part 18 storage space
21 fuel tank
22 fuel tank
22A Oil supply part 27 Cover member 27A Cover surface 27B Upper end extension part 27C Front end extension part 27D Rear end extension part 27E Outer edge part 27F Opening 27Fa Peripheral part 28 Cover member 28A Cover surface 28B Upper end extension part 28C Front end extension part 28D Rear end extension 28E Outer edge
28F Notch 29 Auxiliary Step 29A Step 29B Arm 2929 Extension End 29Bb Adjacent Location A Connection B Connection C Connection

Claims (6)

In a vehicle body structure of a work vehicle that forms a storage space on the back side of the boarding step and includes a fuel tank that stores fuel supplied to the engine in the storage space.
A cover member having a vertical cover surface covering the storage space from the lateral outer side is detachably mounted on the lateral outer end of the boarding step,
The cover member has an upper end extending part extending from the upper end of the cover surface toward the boarding step, a front end extending part extending from the front end of the cover surface toward the boarding step, and the cover surface A rear end extending portion extending from the rear end toward the boarding step,
Connecting the front end of the upper end extension part and the upper end of the front end extension part, and connecting the rear end of the upper end extension part and the upper end of the rear end extension part;
An outer edge portion formed from the upper end extension portion, the front end extension portion, and the rear end extension portion is configured to be provided in the cover member,
The vehicle body structure of a work vehicle, wherein the cover member forms a notch for exposing a fueling portion provided in the fuel tank from the front end extending portion to the cover surface. The boarding step includes a reinforcing portion that hangs from the front and rear ends of the left and right ends of the step surface,
Each of the upper end extension part, the front end extension part, and the rear end extension part is configured as a connection part that connects to a corresponding portion of the step surface of the boarding step and the front and rear reinforcement parts. Item 4. A vehicle body structure according to Item 1. In the body structure of a work vehicle in which a storage space is formed on the back side of the boarding step,
A cover member having a vertical cover surface covering the storage space from the lateral outer side is detachably mounted on the lateral outer end of the boarding step,
The cover member has an upper end extending part extending from the upper end of the cover surface toward the boarding step, a front end extending part extending from the front end of the cover surface toward the boarding step, and the cover surface A rear end extending portion extending from the rear end toward the boarding step,
Connecting the front end of the upper end extension part and the upper end of the front end extension part, and connecting the rear end of the upper end extension part and the upper end of the rear end extension part;
An outer edge portion formed from the upper end extension portion, the front end extension portion, and the rear end extension portion is configured to be provided in the cover member,
The boarding step includes a reinforcing portion that hangs from the front and rear ends of the left and right ends of the step surface,
An operation in which each of the upper end extension part, the front end extension part, and the rear end extension part is configured as a connection part that connects to the corresponding portion of the step surface of the boarding step and the front and rear reinforcement parts. Car body structure.   The vehicle body structure of the work vehicle according to any one of claims 1 to 3, wherein the cover member is provided with an auxiliary step for getting on and off the boarding step. Forming an opening in the cover surface of the cover member that allows the insertion of an arm portion extending upward from the step portion of the auxiliary step;
The extended end of the arm portion to be inserted into said opening, said comprising a first weld portion to be welded to the upper extending portion and the peripheral portion of the opening in the arm portion to be inserted into the opening The work vehicle body structure according to claim 4 , further comprising a second welded portion welded to the peripheral portion at an adjacent location. In the body structure of a work vehicle in which a storage space is formed on the back side of the boarding step,
A cover member having a vertical cover surface covering the storage space from the lateral outer side is detachably mounted on the lateral outer end of the boarding step,
The cover member has an upper end extending part extending from the upper end of the cover surface toward the boarding step, a front end extending part extending from the front end of the cover surface toward the boarding step, and the cover surface A rear end extending portion extending from the rear end toward the boarding step,
Connecting the front end of the upper end extension part and the upper end of the front end extension part, and connecting the rear end of the upper end extension part and the upper end of the rear end extension part;
An outer edge portion formed from the upper end extension portion, the front end extension portion, and the rear end extension portion is configured to be provided in the cover member,
The cover member is equipped with an auxiliary step for getting on and off the boarding step,
Forming an opening in the cover surface of the cover member that allows the insertion of an arm portion extending upward from the step portion of the auxiliary step;
The extended end of the arm portion to be inserted into said opening, said comprising a first weld portion to be welded to the upper extending portion and the peripheral portion of the opening in the arm portion to be inserted into the opening A vehicle body structure of a work vehicle including a second welded portion welded to the peripheral portion at an adjacent location.

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