JPH0986447A - Cabin for tractor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To smoothly conduct the opening/closing work of a cabin in no contact with a handle and an operation lever and easily conduct the maintenance work. SOLUTION: A cabin 6 installed to surround the driver's seat 4 of a tractor is fitted so that the front side is turned upward while a hinge section 7 installed at a position near the axle at the rear section of a frame serves as a fulcrum.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cabin rotatably installed in a driver's seat of a tractor.

[0002]

2. Description of the Related Art In general, in the case of a small tractor, a cabin installed so as to surround a driver's seat has four front and rear corners fixed to the body by bolts. Therefore, in such a tractor, when disassembling the driver's seat part for maintenance work, etc., this cabin must be removed outside the machine using a lifting device such as a crane after removing each mounting and fixing part. It has the drawback of being a complicated task.

On the other hand, in order to eliminate such drawbacks, in a large-sized tractor, a fulcrum for rotating the cabin laterally of the machine body is provided and fixed, and when performing maintenance work, the cabin is operated by a driver's seat. The upper side is opened by tilting and turning sideways.

[0004]

In the structure around the driver's seat of the tractor described above, since the steering wheel and various operating levers are provided in a highly protruding state, the interior space of a cabin such as a cabin of a large tractor is If it is wide, the cabin can be tilted and rotated sideways without contacting the handle or the operating lever. However, in the case of a cabin having a narrow width such as a small tractor, it is difficult to smoothly tilt and turn to the side, and there are problems that the cabin is not sufficiently opened.

[0005]

A cabin of a tractor of the present invention is a traveling body 1 having front and rear wheels 1a and 1b.
In addition to installing the engine 2 and the driver's seat 4 from the front,
In a tractor A having a cabin 6 installed so as to surround the driver's seat 4, the cabin 6 is rotatably mounted and fixed with a hinge portion 7 installed near the rear axle of the machine body as a fulcrum. By doing so, the conventional problems are solved.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, embodiments of the present invention will be described with reference to the drawings. The tractor A shown in FIG. 1 has front wheels 1a,
On the traveling body 1 having the rear wheels 1b, the engine 2
And a driver's seat 4 including a handle 4a, a seat (seat) 4b, various operating levers 4c, etc. are installed on the rear part of the bonnet 3 and a working machine (such as a tiller) is installed at the rear of the machine body 1. An elevating mechanism 5 is provided for mounting the (indicated) so that it can be moved up and down.

In the traveling machine body 1, a cabin 6 that surrounds the driver's seat 4 around both sides of the bonnet 3 is rotated forward with the hinge portion 7 installed at the rear portion as a fulcrum. The cabin 6 is mounted so as to be movable, and the lower front portion of the cabin 6 is detachably mounted and fixed by a supporting portion 7a. The hinge portion 7 is provided in the cabin 6
Mounting bracket 6b formed on the frame 6a (Fig. 2) of the
(FIG. 3) and a mounting bracket 11 formed at the rear of the transmission case 10 of the traveling machine body 1 are rotatably connected by a hinge 12, and the two mounting brackets 6bj11 are attached to the mounting holes formed in both. Appropriate number of cushioning members (packing etc.) 1
In the state in which 3, 13, ... Are interposed, they are fastened by the mounting bolts 15 and nuts 15a (Fig. 4).

On the other hand, the support portion 7a is provided with a mounting piece 6b (FIG. 4) projecting from the lower front portion of the frame 6a, and the mounting piece 6b projecting laterally from both sides of the abdomen of the traveling machine body 1. 1
7, the cushioning member 13 is interposed and the two are fastened together by a mounting bolt 15 and a nut 15a.
Reference numeral 8 shown in FIG. 1 is an indoor air conditioner installed behind the seat 4b on the rear wall side of the cabin 6, and this air conditioner 8 is connected to the engine 2 side via a flexible pipe 8a. It is connected to the installed air conditioner body (not shown).

The lifting mechanism 5 is also known in which a link 51 to which a working machine pivotally supported by the traveling machine body 1 can be mounted is vertically movably connected via a link control cylinder 52 and a hydraulic lift arm 53. The link 51 and the attachment piece 6d formed on the frame 6a of the cabin 6 above the hinge 7 are connected by a connecting rod 19. .

Reference numeral 53a is the hydraulic lift arm 53.
Is a stopper pin that is mounted when the cabin 6 is rotated in order to prevent upward movement of the. The cabin 6 configured as described above has the hinge portion 7 and the support portion in a state where the seat 4b is removed when performing maintenance work or the like performed by opening the driver's seat 4 from the driving work posture shown in FIG. Mounting bolts for parts 7a 15, 15 ...
Then, the link control cylinder 52 is extended.

By the operation of the link control cylinder 52, the link 51 is pushed down, the connecting rod 19 connected to the link 51 is pulled downward, and the cabin 6 connected thereto via the mounting piece 6d is hinged. It can be easily operated in an open position by pivoting backward as shown in FIG. 2 with 12 (FIG. 3) as a fulcrum, and lifting the front of the cabin 6 largely to open the upper side of the driver's seat 4 widely.

In this state, the cabin 6 is maintained in a stable open position by the lifting mechanism 5, so that necessary inspection and maintenance work can be efficiently performed. After the work is completed, the operation opposite to the above is performed, and the link control cylinder 52 is contracted so that the cabin 6
Can be gently and smoothly returned to its original position. Then, the hinge portion 7 (FIG. 3) and the supporting portion 7a (FIG. 4)
Can be brought into a working posture by tightening and fixing them again with the mounting bolts 15, 15.

In such a turning operation of the cabin 6, the front side of the cabin 6 turns upward with the rear side as a fulcrum to open and close the driver's seat 4 part. Therefore, the side wall and the frame of the cabin 6 are opened and closed. The part is the handle 4a
In addition, since the operation is smoothly performed without contacting the operation lever 17 and the like, and the pivoting operation is stably guided by the hinge portion 7, the equipment is damaged or fixed at a fixed position due to the lateral swing of the cabin 6. It is possible to satisfactorily prevent the positional deviation and the like.

Further, the hinge portion 7 may be installed at a position close to the axle 1g of the rear wheel 1b. In this case, the rear wheel fenders 6f formed on both sides of the cabin 6 when the cabin 6 rotates. This rear wheel fender 6f can be formed close to the rear wheel 1b so as to prevent contact between the rear wheel 1b and the outer periphery of the rear wheel 1b, and the rear wheel 1b can be covered well.

Similarly, there is an advantage that the bending of the pipe 8a of the air conditioner 8 at the time of turning can be reduced. Further, in the above-described embodiment, the turning operation of the cabin 6 is performed by the power of the elevating mechanism 5. However, the present invention is not limited to this, and the cabin 6 may be opened and closed by turning manually. As shown by the dotted line in FIG. 2, it is preferable to use an appropriate support member B that supports the cabin 6 in the open position.

Next, the construction of the rearview mirror 9a and the lamp (working light) 9b which are mounted on the cabin 6 shown in FIGS. 5 to 8 will be described. As shown in FIG. 6, the rear-view mirror 9a is integrally attached to the front portion of the door 65 which is opened and closed with the rear as a fulcrum, via an attachment arm 65a. Further, as shown in FIG. 5, a rear-view rear mirror 9c for confirming getting in and out of the cabin 6 is provided through a mounting arm 9d so that the tractor A can be moved in and out and rotated, so that the tractor A can walk or walk. When the vehicle travels on the plate C, the rearview mirror 9c can be operated so that the traveling state of the rear wheel 1b can be accurately visually recognized from the room.

The lamp 9b is attached to the tip of a mounting arm 66 (FIG. 8) having a downward U-shaped cross section, and the base of the mounting arm 66 is fixed to the top plate 6t of the cabin 6. The electric wire 91 of the lamp 9b is drawn into the cabin 6 through the inside of the mounting arm 66 to protect the electric wire 91 and prevent rainwater from entering.
Hook holes 92 are preferably formed in the mounting arm 65a of the rearview mirror 9 and the mounting arm 66 of the lamp 9a, respectively. When the cabin 6 is transported by using the hook holes 92, 92, 92, respectively. .. can be engaged with a hooking tool such as a carrying device, so that carrying work can be performed well.

[0018]

As described above, according to the present invention,
Since the cabin 6 is configured so that the front side rotates upward with the rear side as a fulcrum and the driver's seat 4 portion is opened,
Maintenance work can be performed well. The opening and closing work can be performed smoothly without the side wall of the cabin 6 and the frame portion coming into contact with the handle 4a, the operating lever 17, etc., and the pivoting operation can be stably guided by the hinge portion 7. The positioning and fixing can be easily performed.

Further, since the hinge portion 7 is installed at a position close to the axle 1g of the rear wheel 1b, the cabin 6
It is possible to prevent contact between the rear wheel fender 6f and the rear wheel 1b formed on the front side.

[Brief description of drawings]

FIG. 1 is a side view of a tractor including a cabin of the present invention.

FIG. 2 is a side view showing the operation of FIG.

FIG. 3 is a side view of a hinge portion.

FIG. 4 is a side view of a support portion.

FIG. 5 is a rear view of the tractor.

FIG. 6 is a side view showing a rearview mirror of a cabin.

FIG. 7 is a rear cross-sectional view of a lamp mounting arm.

FIG. 8 is a side view showing a mounting arm of the lamp.

[Explanation of symbols]

1 Running aircraft 1a Front wheel 1b Rear wheel
2 Engine 3 Bonnet 4 Driver's Seat 4a Handle 5 Lifting Mechanism 6 Cabin 6a Frame 7 Hinge 7a Support 12 Hinge A Tractor

Claims (1)

[Claims] 1. A traveling body 1 having front and rear wheels 1a, 1b.
In addition to installing the engine 2 and the driver's seat 4 from the front,
In a tractor A having a cabin 6 installed so as to surround the driver's seat 4, a tractor mounted so as to be openable / closable with a hinge portion 7 installed near the axle at the rear of the fuselage as a fulcrum. In the cabin.