JP2012025281A - Protection plate mounting structure of working vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a protection plate mounting structure of a working vehicle facilitating attaching/detaching work.SOLUTION: In this protection plate mounting structure, a protection plate P is mounted on a lower surface of a vehicle body of the working vehicle. The protection plate mounting structure includes engaging parts 51, 65, 52 and 64 on a front side and a rear side, which are provided on the vehicle body and on the protection plate P to engage the protection plate P to the lower surface of the vehicle body, while sliding the protection plate P in a direction parallel to a bottom surface of the vehicle body, and fixing means 62 for fixing the protection plate P and the vehicle body with the protection plate P engaged to the vehicle body.

Description

  The present invention relates to a protective plate mounting structure for a work vehicle in which a protective plate is attached to a lower surface of a vehicle body of the work vehicle.

  Some conventional work vehicles are equipped with a protective plate so as to protect the lower surface of the vehicle body of the work vehicle when traveling on a float, a bumpy road or the like.

  As the attachment structure of the protection plate, for example, as disclosed in Patent Document 1, there is one that attaches to a vehicle body through bolts in notches provided on both side edges of the protection plate. Such a protective plate has an advantage that it can be easily attached and detached when the protective plate is worn and damaged to be replaced, or when maintenance of equipment such as engine oil replacement is performed. However, the operator needs to fasten and remove the bolt from the vehicle body while supporting the protective plate with his / her hand during the attaching / detaching operation.

Utility Model Registration No. 3132768

  When the size and weight of the protection plate increase, it is difficult for one person to attach and detach the protection plate.

  An object of the present invention is to provide a protective plate mounting structure for a work vehicle that can be easily attached and detached.

  The protection plate mounting structure for a work vehicle according to the present invention is for attaching a protection plate to the lower surface of the vehicle body of the work vehicle, the first characteristic configuration is provided across the vehicle body and the protection plate, Front and rear engagement portions for engaging the protection plate with the lower surface of the vehicle body while sliding the protection plate in a direction parallel to the bottom surface of the vehicle body, and the protection plate engaged with the vehicle body In this state, a fixing means for fixing the protection plate and the vehicle body is provided.

  According to this configuration, for example, when the protective plate is attached, the operator slides the protective plate in a direction parallel to the bottom surface of the vehicle main body, engages the lower surface of the vehicle main body, and then fixes the protective plate to the vehicle main body. be able to. The reverse procedure can be performed when the protective plate is attached and detached.

  This eliminates the need for attaching and detaching the protective plate while supporting the protective plate by hand as in the prior art. Therefore, even when the protective plate is large, etc., the protective plate can be attached and detached by one person, and the mounting operation can be simplified. Since these engaging portions bear the weight of the protective plate to some extent even after the protective plate is fixed, the load applied to the fixing means can be reduced.

  The second characteristic configuration of the present invention is that the front and rear engaging portions are provided separately on both sides along the width direction of the vehicle main body.

  For example, the vehicle may travel across a convex portion on the ground. At this time, the convex portion of the ground may be in contact with the protective plate at the central position along the width direction of the vehicle body, but is protected at the positions on both sides along the width direction of the vehicle body. The possibility of touching the plate is low. Therefore, the engaging portions provided on both sides along the width direction of the vehicle main body are less likely to contact the convex portion from the ground, and the possibility that the engaging portions are damaged is reduced. In addition, the protection plate can be stably supported on both sides along the width direction of the vehicle body.

  According to a third characteristic configuration of the present invention, an engagement member provided on the vehicle main body side of the front and rear engagement portions includes an extension portion provided downward from the vehicle main body, and the extension And a mounting portion that is bent backward from the tip of the protruding portion.

  According to this configuration, when the work vehicle travels on an off-road, a bumpy road, or the like, vegetation or the like is hardly caught between the vehicle main body and the front and rear engaging portions. Therefore, it is possible to prevent the front and rear engaging portions from being deformed or damaged, and inconveniences such as an increase in time and effort for cleaning the lower portion of the vehicle body do not occur.

  According to a fourth characteristic configuration of the present invention, the protective plate has a rectangular shape, and the front engaged portion provided on the protective plate side among the front engaging portions is a front edge of the protective plate. Cutouts provided at both end portions in the width direction, and a rear engagement portion provided on the protective plate side among the rear engagement portions is provided on both side edges of the protection plate. Or it is in the point which is the opening provided in the vicinity of the edge part of the said both sides.

  According to this configuration, the front and rear engaged portions can be provided on the protective plate with a simple configuration in which a cutout or an opening is formed in the protective plate. Moreover, when the protective plate is engaged with the lower surface of the vehicle body, the movement of the protective plate in the horizontal direction is restricted by the contact between the engaging member and the cutout or the opening of the protective plate. Therefore, it becomes easy to position the protective plate when fixing to the vehicle body.

  According to a fifth characteristic configuration of the present invention, the notch or the opening of the protection plate abuts against a lateral side surface of the engagement member provided in the vehicle body when the protection plate is slid with respect to the vehicle body. And a guide edge for guiding the protective plate to a specific position of the vehicle body.

  According to this configuration, the protective plate is guided only by sliding the protective plate with respect to the vehicle body, and positioning of the protective plate to a specific position is facilitated.

  According to a sixth feature of the present invention, the notch or the opening of the protective plate is configured to contact the lateral side surface of the engaging member when the protective plate is guided to the specific position with respect to the vehicle body. There is a point.

  According to this configuration, when the protection plate is guided to a specific position, the notch or the opening of the protection plate is configured to come into contact with the engaging member, so that the main plate is fixed after the protection plate is moved to the specific position. Work becomes easy.

  According to a seventh characteristic configuration of the present invention, the fixing means is slightly less than the outer diameter of the screw portion of the bolt member at a position corresponding to the bolt member of the bolt member attached to the vehicle body and the protection plate. It has a wide width and is composed of a long hole extending in the lateral width direction of the protective plate.

  According to this configuration, when the protection plate is engaged with the lower surface of the vehicle body, the bolt member extends in the width direction of the protection plate even if the position of the protection plate is slightly shifted in the width direction of the protection plate. Can be attached to the vehicle body through a long hole.

It is a side view which shows a work vehicle. It is a side view which shows a vehicle body frame. It is a top view which shows a vehicle body frame. It is a front view which shows a vehicle body frame. It is a rear view which shows a vehicle body frame. It is a bottom view which shows a vehicle body frame. It is a longitudinal cross-sectional view which shows the operation | movement which temporarily places a protection plate on the lower surface of a vehicle body frame. It is a longitudinal cross-sectional view which shows the state which fixed the protection plate to the vehicle body frame with the volt | bolt. It is a top view which shows the state which mounted the protection plate in the hook part of the front side and the rear side. It is a top view which shows the state which mounted the protection plate in the hook part of the front side and rear side in 2nd Embodiment. It is a top view which shows the state which mounted the protection plate in the hook part of the front side in 3rd Embodiment. It is a top view which shows the state which mounted the protection plate in the hook part of the rear side in 3rd Embodiment.

[First Embodiment]
Hereinafter, the work vehicle according to the present invention will be described.

〔overall structure〕
The multi-purpose four-wheel vehicle (UV) as a work vehicle of the present invention protects the lower surface of the vehicle body of the work vehicle when traveling on a road, a bumpy road or the like by providing a protection plate on the vehicle body. . Embodiments according to the present invention will be described below with reference to the drawings.

  As shown in FIG. 1, a multipurpose four-wheel vehicle (UV) includes a vehicle body 3 that is self-propelled by a right and left front wheel 1 that can be steered and driven, and a right and left rear wheel 2 that can be driven. I have. The vehicle body 3 is provided with a driving unit 4 having a lops frame 9 and a driving seat 10 on which an occupant can be seated at the front and rear intermediate portion. A loading platform 5 on which a load can be loaded is provided behind the operation unit 4. An engine 8 is mounted on the rear portion of the vehicle body frame 6 of the vehicle body 3, and a mission case (not shown) having a hydrostatic continuously variable transmission is mounted behind the engine 8. A bonnet B is provided in front of the driving unit 4.

  The right and left rear wheels 2 are linked to both sides of the mission case. As a result, the power from the engine 8 is transmitted to the hydrostatic continuously variable transmission via the transmission case, and the right and left rear wheels 2 are rotationally driven.

  A front wheel drive shaft (not shown) extends forward from the transmission case, and right and left front wheels 1 are linked to the front wheel drive shaft via a front wheel differential device (not shown). Thereby, the power from the engine 8 is transmitted to the front wheel differential device via the hydrostatic continuously variable transmission, and the right and left front wheels 1 are rotationally driven.

(Body frame)
As shown in FIGS. 2 to 8, the vehicle body frame 6 includes a pair of left and right first and second frames 21 (main frames) and a plurality of (four in the present embodiment) installed across the first frames 21. ) And the second frame 22 facing sideways, and configured in a ladder shape in plan view. The first frame 21 and the second frame 22 at the front end and the rear end are configured in a rectangular tube shape. The front and rear second frames 22 include an upper surface portion 22a, side surface portions 22b extending downward from both ends of the upper surface portion 22a in the front-rear direction, and flange portions 22c extending in the front-rear direction from the lower ends of the side surface portions 22b. In addition, the cross-sectional shape is a hat shape.

  A pair of left and right third frames 23 extending upward and forward are fixed to the left and right intermediate portion of the second frame 22 at the front end. A metal front plate-like member 24 is attached to the lower surfaces of the third frames 23.

  A pair of left and right fourth frames 25 is erected on each of the front end portions of the pair of left and right first frames 21. A fifth frame 26 is connected across the upper and lower intermediate portions of the fourth frame 25. A pair of left and right sixth frames 27 extending upward and forward are fixed to the left and right intermediate portions of the fifth frame 26. The sixth frame 27 is located above the third frame 23 in a side view and is located laterally outside the third frame 23 in a plan view. A pair of left and right seventh frames 28 extending forward are fixed to the upper ends of the pair of left and right fourth frames 25.

  As shown in FIG. 7, the right and left front wheels 1 are supported on both lateral portions of the third frame 23 and the sixth frame 27 via front suspension arms 31 that can swing up and down. .

  A pair of left and right tenth to twelfth frames 32 to 34 are erected at the front and rear intermediate portions of the pair of left and right first frames 21, the rear portion from the front and rear intermediate portions, and the rear end portions, respectively. The thirteenth frame 35 is connected across the upper end portion of the tenth frame 32 and the upper and lower intermediate portions of the eleventh frame 33. The fourteenth frame 36 is connected across the upper end of the eleventh frame 33 and the upper end of the twelfth frame 34. The fourteenth frame 36 protrudes rearward from the twelfth frame 34.

  A fifteenth frame 37 extending rearward is fixed to the left and right intermediate portion of the second frame 22 at the rear end. A metal rear plate-like member 38 is attached to the lower surface of the fifteenth frame 37.

  A pair of front and rear sixteenth frames 39 are connected across the rear plate-like member 38 and the protruding portion of the fourteenth frame 36. The right and left rear wheels 2 are supported on both lateral sides of the sixteenth frame 39 via rear suspension arms 40 that can swing up and down.

(Engagement part on the body frame side)
As shown in FIGS. 2 to 9, in order to attach the protective plate P to the lower surface of the vehicle body frame 6, the vehicle body frame 6 is formed with hook portions 51, 52 for hooking and temporarily placing the protective plate P. Yes.

  Specifically, as shown in FIG. 7, a pair of left and right front hook portions 51 (provided on the vehicle main body side of the front engaging portions) are provided at the lower ends of the pair of left and right fourth frames 25. An example of the front engaging member is fixed. The front hook portion 51 includes an extending portion 51a extending downward from a lower portion of the front surface portion of the fourth frame 25, and a rectangular plate-like mounting portion 51b extending rearward from the tip of the extending portion 51a. And it is comprised in the substantially L shape by the side view. A placement portion 51 b is fixed to the lower end surface of the fourth frame 25 by welding. The upper end portion of the extending portion 51 a is in contact with the lower portion of the front surface portion of the fourth frame 25.

  As shown in FIGS. 6 and 9, the laterally outer side end portion of the front hook portion 51 overlaps the laterally outer side surface portion of the fourth frame 25 in plan view. The lateral inner side edge of the front hook portion 51 is located laterally inward from the lateral inner side surface of the fourth frame 25 in plan view. The rear end portion of the placement portion 51b of the front hook portion 51 overlaps the second frame 22 at the front end in plan view. A rectangular notch 51c is formed at a corner on the rear side on the rear side of the mounting portion 51b.

  As shown in FIGS. 7 and 9, the right and left sides of the second frame 22 at the rear end are respectively provided with a pair of left and right rear hook portions 52 (the vehicle body side of the rear engaging portions). An example of a rear engagement member provided on the head is fixed. The rear hook portion 52 includes an extending portion 52a extending downward from a lower portion of the front surface portion of the second frame 22 at the rear end, and a tongue-shaped mounting portion extending rearward from the tip of the extending portion 52a. 52b, and is configured in a substantially L shape in a side view. The lateral width of the extending portion 52 a of the rear hook portion 52 is narrower than the lateral width of the extending portion 51 a of the front hook portion 51. The front-rear width of the extension part 52 a of the rear hook part 52 is narrower than the front-rear width of the extension part 51 a of the front hook part 51.

A plurality of rounds are provided on each of the front part of the plate member 38 on the rear side, the left and right middle part of the second frame 22 at the front end, the right and left middle part, the right side part, and the left side part of the front and rear second frame 22. A hole 55 is formed.
The hole 55 is not limited to a round hole, and may be a long hole.

(Engaged part on the protection plate side)
As shown in FIG. 1, the protective plate P is configured in a rectangular plate shape made of resin (made of polypropylene). The lower surface of the vehicle body frame 6 is covered with a protective plate P without any gaps or joints. That is, the protection plate P covers the lower side between the left and right first frames 21 across the left and right first frames 21 in the left and right direction of the vehicle body, and on the driving unit floor of the driving unit 4 in the front and rear direction of the vehicle body. It is provided so as to cover the lower side between the left and right first frames 21 from the front part to the rear part of the engine 8.

As shown in FIGS. 6, 8, and 9, rectangular cutouts 56 are formed at both front corners of the protective plate P in order to prevent interference with the fourth frame 25. In each of the rear corners of the protective plate P, inclined notches 57 are formed along the direction inclined from the lateral direction to the front side. Locations of the protective plate P corresponding to the plurality of round holes 55 (front left and right intermediate portions, front left and right intermediate portions, front right and left portions, front left and right portions, rear left and right intermediate portions) A plurality of round holes 60 are formed in the rear side, the rear right side, the rear left side, the rear right side, and the rear left side). The outer diameters of these round holes 60 are set to be larger than the outer diameters of the screw portions of bolts 62 described later. In the vicinity of the rear side portion of the edge on both sides of the protective plate P (the left and right end portions on the rear side of the protective plate P), rectangular holes 64 (on the protective plate side of the rear engaging portion). An example of a rear-side engaged portion and an opening portion provided is formed. The lateral width of the hole 64 is wider than the lateral width of the extending portion 52 a of the rear hook portion 52.
The shape of the hole 64 is not limited to a rectangular shape, and is not particularly limited.

(Protection plate mounting operation)
As shown in FIG. 7, first, the protection plate P is temporarily placed on the lower surface of the vehicle body frame 6 of the vehicle body 3. In other words, both end portions 65 in the width direction of the front edge of the protective plate P on the mounting portion 51b of the front hook portion 51 (an example of a front engaged portion provided on the protective plate side of the front engaging portion). ) Is placed. In this state, both end portions 65 of the protective plate P are not in contact with the extending portion 51 a of the front hook portion 51. The rear side of the protective plate P is lifted, and the rear hook part 52 is protruded below the protective plate P through the hole 64. The protective plate P is slid forward, the rear portion 64b of the hole 47 of the protective plate P is placed on the placement portion 52b of the rear hook portion 52, and the protective plate P is temporarily placed (at a specific position). Position in one example).

  In this embodiment, when the protective plate P is positioned at the temporary placement position, the rear portion 64b of the hole 64 of the protective plate P is in contact with the extended portion 52a of the rear hook portion 52. When the protective plate P is positioned at the temporary placement position, both end portions 65 of the protective plate P may abut against the extending portion 51a of the front hook portion 51.

  The distance between the lower surface portion of the second frame 22 at the rear end and the placement surface of the placement portion 52b of the rear hook portion 52 is slightly larger than the thickness of the protective plate P. Thereby, rattling of the protection plate P can be suppressed while it is easy to temporarily place the protection plate P on the lower surface of the vehicle body frame 6 of the vehicle body 3.

  The rear end portion of the placement portion 51b of the front hook portion 51 overlaps the second frame 22 at the front end in plan view. The distance between the second frame 22 at the front end and the placement portion 51b is slightly larger than the thickness of the protective plate P. Thereby, when the protective plate P is temporarily placed on the lower surface of the vehicle body frame 6 of the vehicle body 3, the protective plate P is formed by the rear end portion of the mounting portion 51b of the front hook portion 51 and the second frame 22 of the front end. As a result, the backlash of the protective plate P can be further suppressed.

  As shown in FIG. 8, thereafter, the protection plate P is fixed to the lower surface of the vehicle body frame 6 of the vehicle body 3. That is, a plurality of bolts 62 (an example of a bolt member) having a pressing member 61 that supports the protective plate P fixed to the head are connected to the round hole 60 formed in the protective plate P, the front end, the front side, and the rear side. Through the round hole 55 formed in the second frame 22, it is connected to a threaded portion of a curved thin plate-like spring nut 63 positioned above the second frame 22. Two bolts 62 are passed through a round hole 60 formed in the protective plate P and a round hole 55 formed in the rear plate member 38, and are formed into a curved thin plate shape positioned above the rear plate member 38. It connects with the thread part of the spring nut 63.

  At this time, the cylindrical portion of the pressing member 61 is fitted into the round hole 60 formed in the protective plate P, and the flange portion of the pressing member 61 supports the peripheral portion of the circular hole 60 of the protective plate P.

  Thereby, when attaching and detaching the protection plate P as in the prior art, the protection plate P and the vehicle body 3 can be fixed while the protection plate P is supported by hand, or the protection plate P and the vehicle body 3 can be fixed. There is no need to unlock. Therefore, even when one large protection plate P is fixed to the lower surface of the vehicle body 3, the protection plate P can be attached and detached by one person.

[Second Embodiment]
As shown in FIG. 10, in this embodiment, a rectangular notch 66 (an example of a front engaged portion) is provided at both ends in the width direction of the front edge of the protective plate P, and each of the notches 66 is provided. The front hook portion 51 is configured to be able to enter.

(Protection plate mounting operation)
The first portion 66 a along the lateral direction of the notch 66 of the protective plate P is placed on the placement portion 51 b of the front hook portion 51. The rear side of the protective plate P is lifted, and the rear hook part 52 is protruded below the protective plate P through the hole 64. The protective plate P is slid forward. The rear portion 64b of the hole 64 of the protective plate P is placed on the placement portion 52b of the rear hook portion 52, and the protective plate P is positioned at the temporary placement position.

  At this time, the contact between the lateral side surface 51d of the extending portion 51a of the front hook portion 51 and the second portion 66b along the front-rear direction in the notch 66 of the protective plate P, and the extending portion of the rear hook portion 52 The lateral movement of the protective plate P is restricted by the contact between the lateral side surface 52c of 52a and the lateral side portion 64a of the hole 64 of the protective plate P.

[Third Embodiment]
As shown in FIGS. 11 and 12, in this embodiment, the second portion 66b in the notch 66 of the protective plate P of the second embodiment and the lateral portion 64a of the hole 64 of the protective plate P are respectively front and rear. Guide edges 71 and 72 that are inclined laterally from the direction are formed so that the protective plate P is guided to the temporary placement position of the vehicle body 3.

(Protection plate mounting operation)
The first portion 66 a along the lateral direction of the notch 66 of the protective plate P is placed on the placement portion 51 b of the front hook portion 51. The rear side of the protective plate P is lifted, and the rear hook part 52 is protruded below the protective plate P through the hole 64. The protective plate P is slid forward. The rear portion 64b of the hole 64 of the protective plate P is placed on the placement portion 52b of the rear hook portion 52, and the protective plate P is positioned at the temporary placement position.

  At this time, the guide edge portion 71 formed at the front portion of the second portion 66b of the notch 66 of the protective plate P guides the lateral side surface 51d of the extending portion 51a of the front hook portion 51, and the hole of the protective plate P The guide edge portion 72 formed at the front side portion of the side portion 64 a of 64 guides the side surface 52 c of the extended portion 52 a of the rear hook portion 52, thereby guiding the protective plate P to the temporary placement position. be able to.

  Further, when the protection plate P is guided to the temporary placement position, the contact portion 73 formed in the rear side portion of the second portion 66b of the notch 66 of the protection plate P along the front-rear direction extends the hook portion 51 on the front side. An abutting portion 74 that is in contact with the lateral side surface 51d of the protruding portion 51a and that is formed at the rear side portion of the lateral side portion 64a of the hole 64 of the protective plate P is an extending portion 52a of the rear hook portion 52. The protective plate P can be maintained at the temporary placement position by abutting against the lateral side surface 52c.

  That is, the rear portion 64b of the hole 64 of the protective plate P comes into contact with the extended portion 52a of the rear hook portion 52 to determine the position of the protective plate P in the front-rear direction and the contact portion 73 of the protective plate P. , 74 are in contact with the lateral side surface 51d of the extending portion 51a of the front hook portion 51 and the lateral side surface 52c of the extended portion 52a of the rear hook portion 52, and the lateral position of the protective plate P is determined. Therefore, the bolt 62 can be easily passed through the round hole 60 formed in the protection plate P and the round hole 55 formed in the second frame 22.

[Another embodiment]
(1) The pressing member 61 fixed to the plurality of bolts 62 may be omitted, and the protective plate P may be supported by the heads of the bolts 62. At this time, in the portion corresponding to the bolt 62 (an example of the fixing means) in the protective plate P, a long hole (an example of the fixing means) through which the bolt 62 can be inserted and the head of the bolt 62 cannot be inserted, that is, An elongated hole (an example of a fixing means) is formed that is slightly wider than the outer diameter of the screw portion of the bolt 62 and narrower than the head of the bolt 62 and extends in the lateral width direction of the protective plate P. Also good.

  Thereby, when the protective plate P is engaged with the lower surface of the vehicle main body 3, even if the protective plate P is slightly displaced from the temporary placement position in the horizontal width direction of the protective plate P, the bolt 62 is connected to the horizontal width of the protective plate P. It can be attached to the vehicle body 3 through a long hole extending in the direction.

(2) Instead of the configuration in which the pair of left and right front hook portions 51 are fixed to the fourth frame 25, the pair of left and right front hook portions 51 may be fixed to the second frame 22 at the front end.

(3) Instead of the configuration in which rectangular holes are formed in the vicinity of the rear side portions on both sides of the protective plate P, notches are formed in the rear portions on both sides of the protective plate P, respectively. May be.

(4) The front and rear engaging members 51 and 52 may be provided on the protective plate P, and the front and rear engaged portions 65 and 64 may be provided on the lower surface of the vehicle body 3.

(5) The protective plate P may be constituted by two or more divided plates before and after, and each divided plate may be attached by the above-described attachment structure.

(6) The range in which the lower side of the vehicle body frame 6 is covered by the protective plate P can be set as appropriate. For example, only the lower side of the driving unit floor of the driving unit 4 or the lower side of the engine 8 is covered. It may be one that covers.
Further, the front end side of the protection plate P in the above embodiment may be extended to the lower part of the bonnet B, or the rear end side of the protection plate P may be extended to the lower part of the transmission case. At this time, the front and rear plate-like members 24 and 38 can be omitted.

  The present invention can be applied to various work vehicles such as a tractor, a skid steer loader, and a backhoe.

3 Vehicle main bodies 51, 52 Engaging member (engaging part)
51a, 52a Extension part 51d, 52c Lateral side surface 51b, 52b Placement part 60 Round hole (fixing means)
62 Bolt member (fixing means)
64, 66 Rear engaged portion (engaging portion), opening (engaging portion)
65 Front engaged portion 66 Notch (engaging portion)
71, 72 Guide edge P Protection plate

Claims (7)

A working vehicle protective plate mounting structure for attaching a protective plate to the lower surface of the vehicle body of the working vehicle,
Front and rear engagements provided across the vehicle main body and the protective plate, and engaging the protective plate with the lower surface of the vehicle main body while sliding the protective plate in a direction parallel to the bottom surface of the vehicle main body. With the joint,
A protective plate mounting structure for a work vehicle, comprising: a fixing means for fixing the protective plate and the vehicle main body in a state where the protective plate is engaged with the vehicle main body.   The work plate protective plate mounting structure according to claim 1, wherein each of the front side and rear side engaging portions is provided on both sides along the width direction of the vehicle body.   Of the front and rear engagement portions, the engagement member provided on the vehicle main body side is formed with an extension portion provided downward from the vehicle main body, and bent backward from the tip of the extension portion. The work plate protective plate mounting structure according to claim 1, further comprising a mounting portion. The protective plate has a rectangular shape;
Of the front engaging portion, the front engaged portion provided on the protective plate side is a notch provided at both ends in the lateral width direction of the front edge of the protective plate,
Of the rear engaging parts, the rear engaged parts provided on the side of the protective plate are provided in notches provided on both side edges of the protective plate, or in the vicinity of the both side edge parts. The work plate protective plate mounting structure according to claim 3, wherein the work plate is an opening.   When the notch or the opening of the protection plate slides the protection plate relative to the vehicle body, the protection plate is brought into contact with a lateral side surface of the engagement member provided on the vehicle body and the protection plate is attached to the vehicle body. The work plate protective plate mounting structure according to claim 4, further comprising a guide edge portion that guides to a specific position.   The work vehicle according to claim 5, wherein the cutout or the opening of the protection plate is configured to abut against a lateral side surface of the engagement member when the protection plate is guided to the specific position with respect to the vehicle body. Protective plate mounting structure.   The fixing means has a width slightly wider than an outer diameter of a screw portion of the bolt member at a portion corresponding to the bolt member in the bolt member to be attached to the vehicle main body and the protection plate, and the protection plate The protective plate mounting structure for a work vehicle according to any one of claims 1 to 6, comprising a long hole extending in the horizontal width direction.

Images