JPH0222385Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] The present invention relates to a control device for a forward-reverse type tractor that is used by changing the mounting position of the handle and seat between forward and backward operation. It is.

[Prior art]

In this type of forward-travel type tractor, the handle mounting base for attaching the handle when driving forward is placed on the rear side of the bonnet, and the seat support device that supports the seat when driving backward is placed on the rear of the bonnet. There are some (see Utility Model Application Publication No. 195920/1983). In this conventional example, the handle mounting base is attached to the lower part of the rear part of the bonnet so as to be exposed to the outside, which has the disadvantage that it not only looks bad but also makes the structure near the operator's feet during forward driving complicated and complicated. This is because the seat support device for backward driving is located on the rear part of the bonnet, so the handle post cannot be inserted into the hood from above.

[Purpose of invention]

In view of these conventional problems, the present invention houses the handlebar mount inside the bonnet, and allows the handlebar post to be inserted from above and attached to the handlebar mount regardless of the seat support device. The purpose is to eliminate the complication near the feet of the driver.

[Structure of the idea]

The present invention includes a bonnet 2 that covers the engine and a pair of left and right rear wheel fenders 6, and on the rear side of the bonnet 2, a first handle mounting base 15 of a handle 12 for forward driving and a seat 9 for rearward driving are installed. A second seat support device 11 is provided between the rear wheel fenders 6, and a first seat support device 1 for the forward driving seat 9 is provided.
0 and a second handle mount 16 for the rearward driving handle 12 are provided, and the handle 12 and the seat 9 are removably attached to the corresponding seat support devices 10, 11 and the handle mounts 15, 16. In order to achieve the above-mentioned object, the following technical measures are taken in a control device for a forward-reverse tractor that can change its posture between a forward driving posture and a backward driving posture.

That is, in the present invention, the first handle mount 15 is provided in the rear part of the bonnet 2, the second seat support device 11 is provided on the rear part of the bonnet 2 above the first handle mount 15, and the second seat support device 11 is provided on the rear part of the bonnet 2 above the first handle mount 15. 2. A panel cover 61 that can be opened/closed or removed is provided to cover the sheet support device 11, and the panel cover 61
Holes 62, 50, 51, 33 are provided at the rear of the second seat support device 11 and the bonnet 2, respectively, for allowing the handle post 13 of the handle 12 to be inserted into and removed from the first mounting base 15 from above.
It is characterized by having the following.

〔Example〕

Hereinafter, the present invention will be described in detail with reference to the illustrated embodiment. In FIG. 2, 1 is a tractor body, and 2 is a bonnet, which consists of a main body part 3 that covers an engine, etc., and a panel part 4 behind it. Reference numeral 5 indicates a hydraulic system for raising and lowering the working machine, 6 indicates a rear wheel fender, 7 indicates a floor cover provided between the rear wheel fenders 6 to cover the hydraulic system 5, etc., and 8 indicates a step. Reference numeral 9 denotes a driving seat, which is mounted on a first seat support stand (support device) 10 on the floor cover 7 between the rear wheel fenders 6 when driving forward, and a second seat support device 11 on the panel section 4 when driving backward. can be removably attached to each. A handle 12 is provided at the upper end of a handle shaft 14 held by a handle post 13. The handle post 13 is attached to a first handle mount 15 in the panel section 4 when driving forward, and to a second handle mount 16 on one side of the hydraulic device 5 when driving backward.
They are removably attached to each. Handle 1
2 connects the handle post 13 to the handle mounting base 15,
When installed on 16, its gear box 17,
Output shafts 19, 20 from the mechanism inside 18, universal joint 2
1, 22, interlocking shafts 23, 24, gear box 2
5 and is linked to a steering device (not shown). 26 is a clutch pedal for forward driving, and 27 is a brake pedal for backward driving.

As shown in FIG.
A flat portion 29 is formed extending rearward from the lower end, and is supported from below by a fixing plate 30.
The fixed plate 30 is attached to the tractor body 1 by a support frame 31, a support column 32, and the like. Panel part 4
The handle post 13 is attached to the flat part 29 and the fixing plate 30 from above toward the handle mounting base 15 side.
The hole 33 is formed to have a large opening so that it can be inserted therein. Insert the lower end of the handle post 13 into the handle mounting base 15 and attach the lever 34 to the lever shaft 3.
It is configured such that it can be fastened and fixed with a band 36 by rotating around 5. The handle mounting base 15 is mounted together with the gear case 17 on mounting plates 27 and 38 installed between the support frame 31 and the strut 32, and the gear case 17 is mounted on the tractor body 1 via a bracket 39. It is provided.

The seat support device 11 is shown in FIGS. 1, 3, and 4.
As shown in the figure, it comprises a fixed base 40 and a movable seat support base 41 that can be adjusted vertically and longitudinally. As shown in FIG.
3 has a circumferential engagement groove 44 formed on the upper side,
Further, a screw hole 69 is formed in a pair of support pins 43 located diagonally on one side. The seat support base 41 has a support plate 45 as shown in FIGS. 6 and 7.
A pair of left and right guide rails 46 are provided on the upper surface, and the support plate 45 has a small hole 47 and a large hole 48.
There are four mounting holes 49 which are continuously formed in a daruma shape.
It is formed at the corner. Mounting plate 42 and support plate 4
Holes 50 and 51 are formed in the center of the handlebar 5 so as to correspond to the hole 33 on the panel portion 4 side, into which the handle post 13 can be inserted. The support pin 43 can be inserted into and removed from the large hole 48 of the attachment hole 49, and the engagement groove 44 of the support pin 43 can be inserted into and removed from the small hole 47 from the large hole 48 side. Two fixing pieces 52 are provided on the side edge of the support plate 45 in correspondence with the support pins 43 with screw holes 69, and each of the fixing pieces 5
Two through holes 54 and 55 are formed in each of the screw holes 69 for inserting wing bolts 53 which are screwed into the screw holes 69. A pair of left and right guide rails 46 have seats 9 on them.
The side sliding rail 57 is inserted so as to be slidable back and forth and can be freely inserted and removed, and the seat 9 can be adjusted to four positions in the front and rear directions. 59 is the support plate 45
A stopper provided on the seat 9 removably engages with a stopper on the seat 9 side to prevent the seat 9 from falling off during longitudinal adjustment.

Reference numeral 60 denotes a stopper provided on the inclined portion of the panel portion 4, and is used to restrict the limit when the slide rail 57 is slid toward the main body portion 3 side. 61 is a panel cover provided on the panel portion 4 to cover the seat support device 11,
The cover 61 is attached so that it can be opened and closed by detaching or rotating, and a hole 62 into which the handle post 13 is inserted is formed in the cover 61. Note that a tightening lever 63 is also provided on the handle mount 16 side, similar to the handle mount 15.

In the above configuration, during forward driving, the handle post 13 is attached to the handle mounting base 15 and the seat 9 is attached to the seat support base 10 as shown by the solid line in FIG. In this case, the seat support device 11 is housed compactly so that the seat support base 41 is lowered and does not protrude rearward.
That is, the large hole 48 of the mounting hole 49 is fitted into the support pin 43, the seat support base 41 is lowered to the lower limit, and the screw bolt 53 is inserted into the through hole 54 of the fixing piece 52 and screwed into the screw hole 69. and fix it. As a result, the seat support base 41 is in a vertically overlapping state with respect to the fixed base 40 as shown in FIGS. 1 and 4.
Since it is compact, it can be stored inside the panel cover 61.

When installing the handle 12, insert the handle post 13 diagonally downward from the hole 62 of the panel cover 61, through the holes 50, 51 of the seat support device 11, and the hole 33 of the panel 4 toward the handle mounting base 15. , and its lower end is fitted into the cylindrical portion of the handle mount 15. Then, by operating the lever 34 and tightening the band 36, the handle post 13 can be fixed, and the handle 12 can be interlocked and connected to the output shaft 19 on the gear box 17 side. In this case, the handle mounting base 15 and the gear box 17 are housed within the panel section 4, which simplifies the area near the operator's feet during forward driving compared to conventional ones that are exposed to the outside. be able to.

When driving backwards, the handle post 13 is attached to the handle mount 15 as shown by the imaginary line in FIG. At this time, the seat support stand 4 of the seat support device 11
1 is fixed in a raised and rearwardly protruding state as shown in FIGS. 8 and 9. That is, butterfly bolt 5
3 is released, and the seat support base 41 is lifted along the support pin 43 to a position corresponding to the engagement groove 44 thereof. Then, the seat support base 41
moving the small hole part 4 of the mounting hole 49 backward.
7 engages with the engagement groove 44 of the support pin 43 and cannot be lowered, and at the same time, the through hole 55 of the fixed piece 52 matches the screw hole 69 of the support pin 43, so insert the butterfly bolt 53 into both of them. Match and fix. Once the seat support base 41 has been fixed, the seat 9
The side sliding rail 57 is inserted and attached along the guide rail 46, and the front and rear positions are adjusted as appropriate according to the operator. In this way, the seat support base 41
If you install it by lifting it and moving it backwards,
Since the seat 9 is higher and located at the rear, the tractor body 1 can be seen right under the rear of the tractor body 1, making it easy to drive during work. Note that during backward driving, the floor cover 7 becomes a step.

On both sides of the backrest 64 of the seat 9, armrests 66 may be provided that are pivoted around a horizontal axis 65 as shown by the imaginary line in FIG.

Further, the armrest portion 66 may be pivotally mounted by a vertical shaft 67 as shown in FIGS. 10 and 11. That is, a horizontal notch 68 is formed in the backrest part 64 from both sides toward the center, and an armrest part 66 is pivotally attached to the open end side of the notch 68 by a vertical shaft 67. The armrest portion 66 can be freely changed in position between a state in which it protrudes forward and a state in which it is accommodated in a notch 68 of the backrest portion 64. In this way, the armrest portion 66 can be accommodated within the width of the backrest portion 64, and the armrest portion 66 that has been accommodated will not become a hindrance.

[Effect of idea]

According to the present invention, the bonnet 2 that covers the engine
and a pair of left and right rear wheel fenders 6, and on the rear side of the bonnet 2, a first handle mounting base 15 of a forward driving handle 12 and a second seat support device 11 of a rearward driving seat 9 are provided, A first seat support device 10 for the seat 9 for forward driving and a second handle mounting base 16 for the handle 12 for rearward driving are provided between the rear wheel fenders 6, so that the handle 12 and the seat 9 correspond to each other. seat support device 10,
11 and the handle mounting bases 15 and 16 so that the position can be changed between a forward driving position and a backward driving position, so that forward driving and backward driving can be easily changed depending on the working condition. In addition to the basic effect of stabilizing the driving posture, the following unique effects are achieved.

That is, the first handle mount 15 is provided in the rear part of the bonnet 2, the second seat support device 11 is provided on the rear part of the bonnet 2 above the first handle mount 15, and the second seat support device A panel cover 61 that can be opened/closed or removed is provided to cover the handle 11, and a handle post 13 of the handle 12 is provided on the panel cover 61, the second seat support device 11, and the rear part of the bonnet 2, respectively.
Since the holes 62, 50, 51, and 33 are provided so that the seat can be inserted into and removed from the first handle mounting base 15 from above, the second seat support device 11 can be attached to the panel cover when in the forward driving position. 61, and even if it is covered with the panel cover 61 like this, the handle post 13 can be attached to the first handle mounting base 15 inside the bonnet 2, and the external shape of the vicinity of the rear side of the bonnet can be changed. It is possible to simplify the operation and eliminate obstacles near the operator's feet during forward driving.

[Brief explanation of the drawing]

The drawings illustrate one embodiment of the present invention, in which Fig. 1 is a cross-sectional side view of the main part, Fig. 2 is a schematic side view, Fig. 3 is a plan view of the main part, and Fig. 4 is a sheet view. 5 is a plan view of the fixing base, FIG. 6 is a plan view of the seat support, FIG. 7 is a perspective view of the seat support, and FIG. 8 is a sectional side view of the seat attached. , FIG. 9 is a cross-sectional rear view of the same, FIG. 10 is a front view of the seat, and FIG. 11 is a rear view of the same. 1... Tractor body, 2... Bonnet, 4...
... Panel part, 6 ... Seat, 11 ... Seat support device, 12 ... Handle, 13 ... Handle post, 15, 16 ... Handle mounting base, 17, 18
...Gear box, 33, 50, 51... Hole, 40... Fixing base, 41... Seat support base.

Claims (1)

[Claims for Utility Model Registration] A bonnet 2 that covers the engine and a pair of left and right rear wheel fenders 6 are provided, and on the rear side of the bonnet 2, a first handle mounting base 15 of a handle 12 for forward driving and a first handle mounting base 15 of a handle 12 for forward driving and a rear wheel fender 6 for rearward driving are provided. A second seat support device 11 for the seat 9 for forward driving is provided, and a first seat support device 10 for the seat 9 for forward driving and a second handle mounting base 16 for the steering wheel 12 for backward driving are provided between the rear wheel fenders 6. , the handle 12 and the seat 9 are detachably attached to the corresponding seat support devices 10, 11 and handle mounting bases 15, 16, respectively, so that the posture can be changed between a forward driving position and a backward driving position. In the control device for a type tractor, the first handle mount 15 is provided in the rear part of the bonnet 2, the second seat support device 11 is provided on the rear part of the bonnet 2 above the first handle mount 15, and the second seat support device 11 is provided on the rear part of the bonnet 2 above the first handle mount 15. Second seat support device 11
A panel cover 61 that can be opened/closed or removed is provided, and the handle post 13 of the handle 12 is attached to the panel cover 61, the second seat support device 11, and the rear part of the bonnet 2, respectively.
A control device for a forward-reverse tractor, characterized in that holes 62, 50, 51, and 33 are provided to allow insertion and removal from the handle mount 15 from above.