JP2008155771A - Arrangement structure for control device in working vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To facilitate work for attaching/detaching a control device compared to conventional cases. <P>SOLUTION: In a working vehicle 1, a cover body 17 for preventing mud etc. from entering a driving operation part on a traveling body 2 from its lower side or rear side is provided in the rear part of the traveling body 2, and lever guides 53 for arranging operation means on the upper face of the dust cover 17 are provided. Fenders 26 are arranged in the lateral sides of the dust cover 17 and lever guides 53 and connected. Opening parts 17d/17e facing spaces 60 formed by the dust cover 17, the lever guides 53 and the fenders 26 are formed on the dust cover 17. Control devices 55/56 for performing operation control of a predetermined device are arranged in the spaces 60 formed by the cover body 17, the lever guides 53 and the fenders 26 via the opening parts 17d/17e, to be insertable/detachable from the rear side of the traveling body 2. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention provides a cover body for preventing mud from entering the driving operation section on the traveling machine body from below or behind, and for arranging the operating means on the upper surface of the cover body. The present invention relates to an arrangement structure of a control device in a work vehicle in which a lever guide is provided and a fender is arranged and connected to the side of the cover body and the lever guide.

2. Description of the Related Art Conventionally, a work vehicle such as a tractor provided with a lever guide for arranging operation means on one side or both sides of a seat is known. In such a work vehicle, for example, as disclosed in Patent Document 1, a work machine in which a space of a predetermined size is formed inside the lever guide and is connected to the rear part of the traveling machine body so as to be movable up and down in the internal space. A control device for controlling the raising / lowering operation is provided.
Japanese Patent Laid-Open No. 5-199802

  However, in a conventional work vehicle, the control device is fixed to the floor plate in the internal space of the lever guide. Therefore, when the control device needs to be attached to or detached from the airframe for maintenance or the like, the lever guide is first attached to the airframe. There is a problem that it takes time and effort to attach and detach the control device.

  The problem to be solved by the present invention is as described above. Next, means for solving the problem will be described.

  That is, according to the first aspect of the present invention, a cover body is provided at the rear part of the traveling machine body to prevent mud from entering the driving operation unit on the traveling machine body from below or behind, and the operating means is provided on the upper surface of the cover body. In a work vehicle in which a fender is disposed on and connected to the side of the cover body and the lever guide, the cover body is formed by the cover body, the lever guide, and the fender. A control device for controlling the operation of a predetermined device is inserted into the space formed by the cover body, the lever guide, and the fender from the rear of the traveling machine body. It is arranged as possible.

  According to a second aspect of the present invention, a pair of the lever guides are provided in the cover body, and an opening that faces a space formed by the cover body, the lever guides, and the fender is formed.

  According to a third aspect of the present invention, a cover member that can cover the opening is detachably provided on the cover body, and a control device is attached to the cover member.

  As effects of the present invention, the following effects can be obtained.

  According to the first aspect of the present invention, the control device can be inserted into and removed from the inner space of the lever guide from the rear of the machine body having a relatively large working space through the opening of the cover body without removing the lever guide. . Therefore, the control device can be easily attached and detached for maintenance or the like, and the handling property of the control device can be improved.

  According to the second aspect, in addition to the effect of the first aspect, the control device is arranged only in the internal space of one lever guide or in the internal spaces of both lever guides according to the specifications of the work vehicle. Therefore, the handling of the control device can be improved by setting the specifications.

  According to the third aspect of the present invention, the control member can be inserted into and removed from the internal space of the lever guide only by covering the cover body with the cover portion or attaching / detaching the cover member so as to be removed from the opening portion. The handling of the device is improved. Further, even when a control device is not required according to the specifications of the work vehicle, it is possible to cover the opening of the cover body using the same covering member, and the number of parts can be suppressed.

  Next, embodiments of the invention will be described.

  1 is a side view showing the overall configuration of the tractor, FIG. 2 is a plan view showing the configuration of the rear side of the operation unit, FIG. 3 is a front perspective view showing the arrangement configuration on the dust cover, and FIG. FIG. 5 is a perspective view showing the structure of the dust cover, and FIG. 6 shows a space formed by the dust cover, the lever guide, and the fender on the left side of the operation unit. FIG. 7 is a perspective view showing the arrangement of the control device on the left side of the driving operation unit, FIG. 8 is a rear view showing the arrangement of the control device on the left side of the driving operation unit, and FIG. FIG. 10 is a rear view showing the arrangement configuration of the control device on the right side of the driving operation unit.

  When the work vehicle according to an embodiment of the present invention is a tractor, as shown in FIGS. 1 and 2, in the tractor 1, the traveling machine body 2 has the engine 4 mounted on the front part of the machine body frame 3 and the rear part. A transmission transmission case 5 is fixed, and a clutch housing 6 is interposed between the engine 4 and the transmission case 5 to connect them. The traveling machine body 2 supports a pair of left and right front wheels 11 via a front axle case (not shown) at the front, and supports a pair of left and right rear wheels 12 via a rear axle case 19 at the rear. Driving the rear wheel 12 or both front and rear wheels 12 with the engine 4 allows the vehicle to travel forward or backward.

  In the traveling body 2, a bonnet 15 that covers the engine 4 is provided at the front of the body frame 3, and the step 16 that covers the transmission case 5 and the like on the step frame 18 that is disposed at the rear of the body frame 3 and the traveling are performed. A dust cover 17, which is a cover body for preventing mud from entering the driving operation unit on the body 2 from below or from behind, is provided. The step frame 18 extends from the rear part of the body frame 3 to the vicinity of the rear end of the transmission case 5 while being curved upward and is supported by the body frame 3 at the front part and the rear part of the transmission case 5 at the rear part. It is supported by rear axle cases 19 provided on the left and right sides.

  A dashboard 21 is provided at the front of the step 16, and a steering handle 22 for steering the front wheels 11 is disposed behind the dashboard 21. As shown in FIG. 2, a seat 25 is disposed on the center portion of the dust cover 17, and fenders 26 that cover the rear wheels 12 are disposed on both the left and right sides of the seat 25 and are connected to the step frame 18. . A cabin 28 that covers the steering handle 22, the seat 25, and the like is provided behind the bonnet 15, and a driving operation unit is configured inside the cabin 28.

  As shown in FIG. 2, the driving operation unit is provided with operation means arrangement portions 45L and 45R between the seat 25 and the left and right fenders 26, and the operation means arrangement portions 45L and 45R are provided with devices of each part of the tractor 1. Operation means such as a lever and a switch for operating the are arranged. As the operating means, for example, there are a main transmission lever 46, an auxiliary transmission lever 47, a PTO transmission lever 48, a work implement elevating lever 49, etc., which are provided so as to protrude upward from the operation means arrangement portions 45L and 45R. Yes. In addition, the operation means include a tilt setting switch of a work machine, a sensitivity adjustment dial, and the like, and these are collectively provided in an operation box 50 arranged on the operation means arrangement portion 45R on the right side.

  Similarly to the seat 25, the left and right operation means installation portions 45L and 45R are provided above the dust cover 17. As shown in FIG. 5, the dust cover 17 includes a front cover 17a extending in a substantially vertical direction, a middle cover 17b extending rearward from the upper end of the front cover 17a in a substantially horizontal direction, and a rear part from the rear of the middle cover 17b. And a rear cover 17c extending upward. The front cover 17a can be fixed to the front portion of the step frame 18, the rear cover 17c can be fixed to the rear end portion of the step frame 18, and the left and right sides of each cover. The fender 26 can be fixed. A maintenance opening 17f is provided substantially at the center of the middle cover 17b, and maintenance below the dust cover 17 can be performed without removing the dust cover 17 from the maintenance opening 17f. Except when necessary for maintenance or the like, the opening 17f is covered with a covering member 35 detachably attached to the middle cover 17b as shown in FIG. A seat 25 is placed on the covering member 35 on the dust cover 17.

  As shown in FIG. 3 and FIG. 4, the operating means arranging portions 45L and 45R are provided with these rotation support mechanisms 51 and 52 on the base side of the levers 46, 47, 48 and 49, which are operating means. The lever guide 53 is covered from above. A grip portion on the distal end side of the levers 46, 47, 48, and 49 protrudes upward from the lever guide 53. The lever guide 53 extends in the front-rear direction at a position above the seating surface of the seat 25 and lower than the upper end of the backrest. 53d, the operation box 50, and the like are formed with a width that can be arranged. Thus, the dust cover 17, the lever guide 53, and the fender 26 can accommodate a rotation support mechanism 51, 52 of the levers 46, 47, 48, 49, control devices 55, 56 described later, and the like. As shown in FIG. 6, for example, 60 is formed so that mud or the like does not enter the lever guide 53 from the outside of the machine body.

  As a control device housed in the inner space 60 of the lever guide 53, for example, when the transmission of the tractor 1 is a hydraulic-mechanical transmission (hereinafter referred to as HMT), the control device for HMT that performs the shift control of the HMT is used. There is a control device 55 and a control unit 56 for controlling the work implement leveling device which controls the work implement lifting device provided at the rear part of the traveling machine body 2 so that the work implement connected thereto can be maintained horizontally. 56 is arranged in the inner space 60 of the left and right lever guides 53, respectively. Further, when there is one control device because the transmission is not of the HMT specification or the like, it is arranged in the inner space 60 of the left or right lever guide 53. In addition, the kind of control apparatus is not specifically limited.

  The control devices 55 and 56 for HMT and work machine level control are detachably arranged in the internal space 60 through left and right opening portions 17d and 17e opened at the lower left and right sides of the rear cover 17c of the dust cover 17. ing. Specifically, as shown in FIGS. 7 to 10, rectangular openings 17 d and 17 e are controlled at the lower left and right sides of the rear cover 17 c of the dust cover 17 that forms the rear wall of the inner space 60 of the lever guide 53. According to the size of the devices 55 and 56, it is formed with vertical and horizontal widths through which it can be inserted, and the control devices 55 and 56 can be inserted into and removed from the inner space 60 of the lever guide 53 through the openings 17d and 17e. Is arranged.

  The control devices 55 and 56 are configured to be attached to covering members 62 and 63 capable of covering the openings 17d and 17e. When the control devices 55 and 56 are disposed in the inner space 60 of the lever guide 53, the covering members 62 and 63 are disposed. The dust cover 17 is detachably fixed to the rear cover 17c. The covering members 62 and 63 are formed, for example, in a substantially L shape by bending a plate-like member, and the left and right sides of the control devices 55 and 56 can be attached to the standing portions 62a and 63a on one side. The flat plate portions 62b and 63b are detachably attachable to the rear surface of the rear cover 17c of the dust cover 17 so that the openings 17d and 17e can be covered.

  The standing portions 62a and 63a of the covering members 62 and 63 are formed with a width that can be inserted into the openings 17d and 17e, and are configured so that the side surfaces of the control devices 55 and 56 can be attached with bolts or the like. Thus, the control devices 55 and 56 are inserted into the openings 17d and 17e in a state of being fixed to the covering members 62 and 63, and the flat plate portions 62b and 63b are inserted into the rear cover 17c of the dust cover 17 and the bolts 65 and the like as will be described later. By fixing with a fastener, as shown in FIG. 7A and FIG. 9A, the lever guide 53 can be disposed in the inner space 60. Further, by removing the bolts and the like from the rear cover 17c and extracting the covering members 62 and 63 and the control devices 55 and 56 from the openings 17d and 17e, as shown in FIGS. 7B and 9B, The control devices 55 and 56 can be removed from the inner space 60 of the lever guide 53 to the outside of the machine body.

  On the other hand, the flat plate portions 62b and 63b of the covering members 62 and 63 are formed with vertical and horizontal widths that can cover the openings 17d and 17e, and are configured to open a plurality of bolt holes 62c and 63c in the periphery thereof. The bolt holes are arranged so as to correspond to the bolts 65 fixed at appropriate intervals around the openings 17d and 17e of the rear cover 17c. Thus, as described above, the flat plate portions 62b and 63b are fasteners such as a plurality of bolts 65 by being inserted into the inner space 60 of the lever guide 53 with the control devices 55 and 56 attached to the standing portions 62a and 63a. Can be fastened to the dust cover 17, and the openings 17d and 17e can be covered as shown in FIGS. That is, the control devices 55 and 56 can be detachably fixed to the dust cover 17 while covering the openings 17d and 17e.

  However, the covering members 62 and 63 are inserted into the inner space 60 of the lever guide 53 through the openings 17d and 17e with the control devices 55 and 56 attached to the standing portions 62a and 63a, so that the flat plate portion 62b. Although it is configured so that the openings 17d and 17e can be covered with 63b, if the control device is not necessary, the covering members 62 and 63 can be left as they are or the shape of only the flat plate parts 62b and 63b can be used as dust. It is also possible to fix the cover 17 and cover the openings 17d and 17e with the flat plate portions 62b and 63b.

  In this way, the control devices 55 and 56 are attached to the covering members 62 and 63, and can be inserted into and removed from the inner space 60 of the lever guide 53 from the rear of the machine body through the openings 17d and 17e of the dust cover 17. The dust cover 17 can be easily attached and detached via the covering members 62 and 63. In other words, when performing maintenance or the like of the control devices 55 and 56, the bolts or the like that fix the flat plate portions 62b and 63b are removed from the rear of the machine body, and the covering members 62 and 63 are pulled out rearward to thereby control the control device 55. -56 can be easily extracted.

  In the above configuration, the harnesses 57 and 58 extending from the control devices 55 and 56 are wired to the rear of the aircraft through the through holes opened in the flat plate portions 62b and 63b or notches provided in the flat plate portions 62b and 63b. When the control devices 55 and 56 are inserted into and removed from the inner space 60 of the lever guide 53, the control devices 55 and 56 are connected to a predetermined device without being obstructed, and need not be forced to pull or detach with a connector. It has come to be.

  As described above, the dust cover (cover body) 17 is provided at the rear part of the traveling machine body 2 to prevent mud from entering the driving operation unit on the traveling machine body 2 from below or behind. In the tractor (work vehicle) 1 in which the lever guide 53 for arranging the operating means is provided on the upper surface and the fender 26 is arranged and connected to the side of the dust cover 17 and the lever guide 53, the dust cover 17 Openings 17d and 17e facing the space 60 formed by the dust cover 17, the lever guide 53, and the fender 26 are formed, and the dust cover 17, the lever guide 53, and the fender are formed through the openings 17d and 17e. 26, the control devices 55 and 56 for controlling the operation of a predetermined device are inserted into and removed from the rear of the traveling machine body 2. Since the control devices 55 and 56 are arranged in the inner space 60 of the lever guide 53 without removing the lever guide 53, the rear side of the machine body having a relatively large working space through the openings 17d and 17e of the dust cover 17 is provided. It becomes possible to insert and remove from. Therefore, the attaching / detaching work of the control devices 55 and 56 in maintenance or the like can be facilitated as compared with the conventional case, and the handling property of the control devices 55 and 56 can be improved.

  In the tractor 1, a pair of the lever guides 53 are provided on the dust cover 17, and openings 17 d and 17 e facing the space 60 formed by the dust cover 17, the lever guides 53, and the fender 26. Therefore, according to the specifications of the tractor 1, the control devices 55 and 56 may be arranged only in the inner space 60 of one lever guide 53 or in the inner space 60 of both lever guides 53. Therefore, the handling of the control devices 55 and 56 by specification setting can be improved.

  In the tractor 1, the dust cover 17 is provided with detachable covering members 62 and 63 that can cover the openings 17d and 17e, and the control devices 55 and 56 are attached to the covering members 62 and 63, respectively. Therefore, the inner space of the lever guide 53 of the control devices 55 and 56 can be obtained simply by covering the dust covers 17 with the openings 17d and 17e or by detaching the covering members 62 and 63 so as to be removed from the openings 17d and 17e. 60 can be inserted and removed, and the handling of the control devices 55 and 56 is improved. Further, even when the control devices 55 and 56 are not required according to the specifications of the tractor 1, the same covering member 62 can be used to cover the opening 17d of the dust cover 17, and the number of parts can be reduced. be able to.

The side view which showed the whole structure of the tractor. The top view which showed the structure of the back side of a driving | operation operation part. The front perspective view which showed the arrangement configuration on a dust cover. The rear perspective view which showed the arrangement configuration on a dust cover. The perspective view which showed the structure of the dust cover. Front sectional drawing which showed the space part formed with the dust cover in the left side of a driving | operation operation part, a lever guide, and a fender. The perspective view which showed the arrangement configuration of the control apparatus in the left side of a driving | operation operation part. (A) The figure which showed the case where the control apparatus was inserted. (B) The figure which showed the case where a control apparatus was removed. The rear view which showed the arrangement configuration of the control apparatus in the left side of a driving | operation operation part. The perspective view which showed the arrangement configuration of the control apparatus in the right side of a driving | operation operation part. (A) The figure which showed the case where the control apparatus was inserted. (B) The figure which showed the case where a control apparatus was removed. The rear view which showed the arrangement configuration of the control apparatus in the right side of a driving | operation operation part.

Explanation of symbols

1 Tractor (work vehicle)
2 Traveling machine body 17 Dust cover (cover body)
17d opening 17e opening 53 lever guide 55 control device 56 control device 60 inner space of lever guide 53 62 covering member 63 covering member

Claims (3)

  A cover body is provided at the rear part of the traveling machine body to prevent mud from entering the driving operation unit on the traveling machine body from below or behind, and a lever guide for arranging the operation means on the upper surface of the cover body is provided. In the work vehicle in which a fender is disposed and connected to the side of the cover body and the lever guide, an opening facing the space formed by the cover body, the lever guide, and the fender is provided in the cover body. And a control device for controlling the operation of a predetermined device is detachably arranged from the rear of the traveling machine body in a space formed by the cover body, the lever guide, and the fender through the opening. Arrangement structure of control device in working vehicle.   2. The work vehicle according to claim 1, wherein a pair of the lever guides are provided in the cover body, and an opening that faces a space formed by the cover body, the lever guides, and the fender is formed. Arrangement structure of control device in FIG.   3. The control device for a work vehicle according to claim 1, wherein a cover member capable of covering the opening portion is detachably provided on the cover body, and the control device is attached to the cover member. Arrangement structure.

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