JPH0219355Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to the rear structure of a tractor by integrating the floor seat, seat device, fuel tank, and left and right fenders so that they can be easily attached to and removed from the vehicle body. The purpose is to shake.

The rear structure of conventional tractors was developed in 1974.
There is one disclosed in Publication No. -135442.

This is an integrated floor seat, seat system, and left and right fenders that are attached to the vehicle body via vibration isolating material.

In the above-mentioned conventional vehicle, the left and right fenders are connected by a plate-shaped floor sheet, so the strength of the integral structure of the floor sheet, the seat device, and the left and right fenders is not sufficient.

Further, some tractors are equipped with a fuel tank at the rear, and in this case, if the fuel tank is to be attached and detached separately from the left and right fenders, etc., the work becomes troublesome.

The present invention aims to solve the above problem with a structure as simple as possible.

The feature of this invention is that the floor seat 7
A pair of fenders 6 arranged on the left and right sides of the seat device 8 and fixed thereto are attached to the front cross beam member 12.
, a rear lower cross beam member 13L, and a rear upper cross beam member 13U.
Front and rear support members 23 and 14 are connected to this front cross-beam member 12 and rear lower cross-beam member 13L via elastic supports 18, and this front and rear support member 2
3 and 14 are detachably fixed to the vehicle body 1, and the fuel tank 9 is fixed by the rear lower cross beam member 13L and the rear upper cross beam member 13U.

Embodiments of the present invention will be described below with reference to the drawings.

In Figures 1 to 4, 1 is the body of the tractor;
It is formed by an engine, a transmission case, etc., and a brake case 2 is fixed to the rear left and right sides, and a rear axle case 3 is protruded outward from the brake case 2. A hydraulic device for raising and lowering the tractor-towing work machine is installed at the rear upper part. 4 is arranged, and in front of this hydraulic device 4, a transmission stand 5 for performing sub-shifting and super deceleration is provided.

Reference numeral 6 denotes a pair of left and right fenders that cover the rear wheels. A floor seat 7, a seat device 8, and a fuel tank 9 are arranged between the pair of fenders 6. A step 10 is arranged.

The left and right fenders 6 are connected by constructing a front cross beam member 12 and a rear cross beam member 13, and the rear cross beam member 1
3 has two on the top and bottom, both of which also serve as tank supports. The number of the horizontal beam members may be three or more, but
At least one at the front and one at the rear is required.

The fuel tank 9 is located at the rear of the seat device 8, and a joining flange 9a approximately in the center in the front-rear direction is bolted to the rear upper cross beam member 13U and the rear lower cross beam member 13L.

14 is a rear support member placed on the upper surface of the hydraulic device 4 and fixed from the rear via bolts 15;
A horizontally long receiving member 16 is fixed to the upper part of the receiving member 16 via bolts 17 or by welding, and the rear lower cross beam member 13L is supported via elastic supports 18 provided on both sides of the receiving member 16. The elastic support 1
8, cushion members 19 are arranged above and below the receiving member 16, and bolts 20 are passed through and fastened to these members and the rear lower cross beam member 13L placed on the upper cushion member 19, thereby reducing vibrations from the vehicle body 1. Rear lower cross beam member 13
I'm trying not to let L know.

Reference numeral 22 denotes a gate-shaped bracket bolted to the vehicle body 1 across the transmission platform 5, and a horizontally long front support member 23 is detachably fixed to the upper surface of the bracket via bolts 24. Elastic supports 18 are arranged on both sides of the front support member 23, and the front cross-beam member 12 is supported via a pair of left and right support pieces 25 fixed thereto. The elastic support body 18 prevents vibrations from the vehicle body 1 from being transmitted to the front cross beam member 12.

The seat device 8 includes a seat 27, a seat mounting base 28,
The rail base 29 is open upwardly and has rail portions 29a having a U-shaped cross section on the left and right sides, and the seat mounting base 28 engages with the left and right rail portions 29a and is slidable back and forth. In addition, the seat 27 can be set forward or backward using a stopper mechanism (not shown), and the seat 27 is pivotally connected to a seat mount 28 so as to be foldable forward.

The front part of the rail stand 29 is connected to the front support member 23.
It is placed on top of the bracket 22 and fastened together with the bracket 22 by bolts 24, and its rear part is connected to the front part of the rear support member 14 via bolts 30. This bolt 30 may be screwed into the hydraulic device 4. In addition, the rail stand 29 is connected to the front and rear support members 2.
It is also possible to weld them to 3 and 14.

The floor sheet 7 has a plane part 7a and a front hanging part 7b, and both left and right edges are fixed to the fender 6, and the front cross beam member 1 is fixed to the front hanging part 7b.
It is fixed at 2. The flat part 7a is a rail stand 29
A guide plate 3 for the hydraulic levers 31 and 32 is provided on the upper surface of both left and right sides of the cutout.
3 and a guide plate 36 for the gear shift levers 34 and 35, the front hanging part 7b straddles the gear shift platform 5, and on the left side thereof, a guide plate 36 for the PTO gear shift lever 37 and front wheel drive switching lever 38 is provided. U-shaped notches 39a and 39b are formed.

In the rear part of the tractor configured as described above, a pair of left and right fenders 6 and a fuel tank 9 are integrated by front and rear cross beam members 12 and 13, and the front and rear cross beam members 12 and 13 are connected to an elastic support 18. Since it is supported by the front and rear support members 23 and 14 via the front and rear support members 23 and 14, vibration transmission from the vehicle body 1 to them is sufficiently reduced. Further, the floor seat 7 is directly fixed to the fender 6 via the front and rear support members 23 and 14, and the seat device 8 is fixed to the fender 6 through the front and rear support members 23 and 14, respectively.
14 is detachable from the vehicle body 1,
Left and right fenders 6, fuel tank 9, front and rear cross beam members 1
2, 13, the floor seat 7, the seat device 8, etc. can be attached to and detached from the vehicle body 1 as an integral part,
These can be assembled and attached to the vehicle body 1 on a separate line from the vehicle body 1, and disassembly is also easy, and the strength is improved.

The front and rear support members 23 and 14 can be attached and detached by attaching and detaching the bolts 15 from the rear of the vehicle body 1 and by attaching and detaching the bolts 24 from the front of the seat 27.
The floor seat 7 has notches 39a, 39 for the PTO gear shift lever 37 and front wheel drive switching lever 38.
b is formed, by removing the grips of the hydraulic levers 31, 32 and the speed change levers 34, 35, the levers can be moved upward without being affected by them.

The seat device 8 can also be installed on the floor seat 7, and the rear part of the floor seat 7 can be supported by the rear lower cross beam member 13L. Similarly, the front and rear support members 12 and 13 are
As a result, vibration transmitted from the vehicle body 1 can be reduced.

A position lever 3 is attached to the hydraulic guide plate 33.
A guide groove 41 for the draft lever 32 and a guide groove 42 for the draft lever 32 are formed in parallel, and a lever fixing mechanism 43 is provided at an upper position between the guide grooves 41 and 42.

Hydraulic system 4 where position control and draft control are usually operated by separate levers
Now, when using the position lever 31, it is necessary to raise the draft lever 32 to the uppermost position to raise the draft valve, and when using the draft lever 32, it is necessary to raise the position lever 31 to the uppermost position. Conventionally, the guide plate 3
A plate that locks one of the levers 31, 32 may be fixed to the guide groove 41, 4 with a butterfly bolt.
A protrusion is formed on 2 and the lever is hooked onto the protrusion, making it necessary to tighten and loosen the butterfly bolt and making it difficult to securely lock the lever.

5 and 6 show an improved version of the lever fixing mechanism 43, in which a hook-shaped rod 45 is passed through a plate 44 whose tip is bent to form an engaging portion 44a, and this rod 45 is passed through the guide plate 33. and is pressed in the retraction direction by a spring 46.

The plate 44 is configured such that the engaging portion 44a abuts against the wall surface of each guide groove 41, 42 and is prevented from rotating, and the rod 45 is held by the spring 4.
6, the engaging portion 44a separates from one of the guide grooves, and in this state, the rod 4
5 rotates, the plate 44 rotates, and the engaging portion 4
4a can be engaged with the other guide groove.

With such a lever fixing mechanism 43, an unused lever can be fixed simply by pulling up and rotating the rod 45, and since the engaging portion 44a engages with the guide grooves 41 and 42, the plate 44 can be securely locked. You can put it away.

According to the present invention, since the left and right fenders are supported at three points: the front cross beam member, the rear lower cross beam member, and the rear upper cross beam member, the fixing strength of the left and right fenders can be increased.

Since the fuel tank is fixed by the rear lower cross beam member and the rear upper cross beam member, the fuel tank itself becomes a member that increases the connection strength between the left and right fenders, creating an integrated structure of the left and right fenders, floor seat, seat device, and fuel tank. The connection strength can be increased.

By using the cross beam member to fix the fuel tank, a separate fixing member is not required for fixing the fuel tank, and the number of parts is reduced as much as possible, thereby simplifying the structure.

Since the front and rear support members are connected to the cross beam member, a separate connection member is not required to connect the front and rear support members, and the number of parts is reduced as much as possible to simplify the structure.

Since the floor seat, seat device, left and right fenders, and fuel tank are integrated, they can be attached to and removed from the vehicle body all at once, making assembly and disassembly easy.

[Brief explanation of the drawing]

Figures 1 to 4 show an embodiment of the present invention, with Figure 1 being a partially sectional front view of the rear of the tractor, Figure 2 being a partially sectional side view, and Figure 3 being a partially sectional rear view. , FIG. 4 is a plan view of the main part, FIGS. 5 and 6 show the lever fixing mechanism, FIG. It is a diagram. 1...Tractor body, 6...Fender, 7...
Floor seat, 8... Seat device, 9... Fuel tank, 12... Front cross beam member, 13... Rear cross beam member,
14... Rear support member, 15... Bolt, 18...
Elastic support body, 23... Front support member, 24... Bolt.

Claims (1)

[Scope of utility model registration request] A pair of fenders 6 are arranged on the left and right sides of the floor seat 7 and the seat device 8 and are fixed thereto.
The front cross beam member 12 is connected to the rear lower cross beam member 13L and the rear upper cross beam member 13U.
Front and rear support members 23 and 14 are connected to the rear lower cross beam member 13L and the rear lower cross beam member 13L via elastic supports 18, and these front and rear support members 23 and 14 are detachably fixed to the vehicle body 1, and the rear lower cross beam member 13L and the rear Upper cross beam member 13U
A rear structure of a tractor, characterized in that a fuel tank 9 is fixed with.