JP2002068030A - Tractor for control work - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simplify attaching constitution for a safety frame of a tractor, and to reduce a weight, and to make a control work device easily attached. SOLUTION: An attaching post 2 for attaching a base part of the safety frame 1 is provided at the rear part of a driver's seat 3 in the tractor for control work.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tractor for management work, and can be used as a tractor to which an attachment mainly for management work such as a chemical spraying / controlling machine, a fertilizer / seeding machine, a middle tillage weeding machine, and a seedling planting machine is attached.

[0002]

2. Description of the Related Art A safety frame erected on a rear side of a driver's seat of a tractor body has a lower end attached to a body frame or a rear axle housing at an inner rear portion of a fender covering a rear wheel. A lift cylinder, a lift hitch arm and the like are arranged on both left and right sides of a rear transmission case portion of a driver's seat.

[0003]

The tractor for management work needs to be small and lightweight in order to improve workability. However, it is difficult to reduce the size and weight of the conventional configuration including the safety frame and the lift cylinder.

[0004]

According to a first aspect of the present invention, there is provided a tractor for management work, wherein a mounting post for mounting a base of a safety frame is provided at a rear portion of a driver's seat. . The invention according to claim 2 is characterized in that a medicine tank 4 formed so as to surround the right and left sides and the rear side of the driver's seat 3 and the mounting post 2 is mounted.

According to a third aspect of the present invention, there is provided a tractor for management work, wherein a control pump 6 is provided below the seat frame 5 supporting the driver's seat 3. The invention described in claim 4 is characterized in that a seat frame cover 7 is provided on the seat frame 5 so as to be openable and closable.

According to a fifth aspect of the present invention, a driver's seat 3 is provided on a body frame 9 supported by a rear axle housing 8.
And a mounting portion 11 on which an attachment can be mounted is formed on the rear side thereof,
A lift tractor 13 for rotating the lift hitch arm 12 up and down is provided below the seat frame 5 between the left and right body frames 9 along the front-rear direction.

The invention according to claim 6 is characterized in that the arm shaft 14 of the lift hitch arm 12 is provided on a support bracket 15 on the front side of the rear axle housing 8.

[0008]

According to the first aspect of the present invention, the mounting post 2
Is located at the rear part of the driver's seat 3, so that it is arranged and configured as a narrow space, so that it is difficult to restrict the mounting of the management work equipment and is not obstructive, and it is possible to reduce the size and weight of the vehicle body including the safety frame.

According to the second aspect of the present invention, since the mounting post 2 is located at the rear part of the driver's seat 3 as described above, the medicine tank 4 mounted so as to be fitted to the outer peripheral part can be attached and detached. It is easy and the effective volume of the medicine tank 4 can be increased. According to the third aspect of the present invention, the distance between the control pump 6 below the driver's seat 3 and the medicine tank 4 mounted around the driver pump 3 is reduced to shorten the piping line for sucking the medicine of the control pump 6. The maintenance of the control pump 6 can be easily performed by opening the driver's seat 3.

[0010] According to a fourth aspect of the present invention, on the driver's seat 3,
The soundproofing effect is enhanced by the seat frame cover 7,
The maintenance of the control pump 6 can be easily performed by opening and closing the seat frame cover 7. According to the fifth aspect of the present invention, the lift cylinder 13 is provided below the seat frame 5 between the left and right body frames 9 so that the center of gravity can be lowered in the form of a high floor.
2 can be raised and lowered with good left-right balance, and can be reduced in weight as a single form of lift cylinder 13. Further, the lift cylinder 13 and the lift hitch arm 12 are arranged as far forward as possible with respect to the vehicle body frame 9 so that the body can be shortened and downsized.

According to a sixth aspect of the present invention, since the lift hitch arm 12 and the arm shaft 14 are provided on the support bracket 15 on the front side of the rear axle housing 8, the structure of the vehicle body is made thin and the lift hitch arm is formed as a high floor form. 12 can be maintained at a large height, the mounting portion 11 at the rear end of the vehicle body frame 9 can be widely used, and mounting of the attachment such as the chemical tank 4 can be facilitated.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION The tractor for management work according to the present invention can be used for management work machines such as a chemical control machine, a fertilizer / seeding machine, a middle tillage weeding machine and a seedling planting machine. Hereinafter, a case where the present invention is used for a chemical spraying control machine will be described with reference to the drawings. 1 to 5, the tractor body mainly includes a body frame 9 composed of a pair of right and left square tubes suspended above a front axle housing 16 and a rear axle housing 8. In addition to the housings 16 and 8, they are connected by a connecting member 17 in the horizontal direction or a constituent member. An engine 18 is mounted on a front end of the body frame 9 and a steering post 19
A dashboard 20 for supporting the vehicle, a bonnet 21 and the like are arranged, and a seat frame 5 for supporting the driver's seat 3 and a mounting post 2 for mounting and supporting the safety frame 1 are provided at the rear.
Lift hitch frame 12 and lift cylinder 1
Arrange 3 etc.

Vertical terminal housings 22 are provided on both left and right ends of the front axle housing 16, and vertical terminal housings 23 are provided on both left and right ends of the rear axle housing 8. A front wheel 25 and a rear wheel 26 are mounted on a shaft, and the steering can be interlocked with a steering wheel 24 on the steering post 19, and the vehicle can be driven by the drive of the engine 18 to travel.

Here, according to the first aspect of the present invention, the mounting post 2 for mounting the base of the safety frame 1 is provided at the rear of the driver's seat 3 so as to be arranged as a narrow space, and the management work equipment is mounted. And the vehicle body including the safety frame can be reduced in size and weight.

In the invention according to a second aspect, a medicine tank 4 formed so as to surround the left and right sides and the rear side of the driver's seat 3 and the mounting post 2 is mounted on the outer periphery. It is easy to attach and detach the medicine tank 4 to be fitted so as to be fitted, and the effective volume of the medicine tank 4 can be increased.

According to the third aspect of the present invention, the control pump 6 is provided below the seat frame 5 supporting the driver's seat 3 and is mounted below and around the driver's seat 3. It is possible to shorten the piping line for sucking the medicine of the control pump 6 by making the space between the medicine tank 4 and the medicine tank 4 closer,
By opening the driver's seat 3, maintenance of the control pump 6 can be easily performed.

According to a fourth aspect of the present invention, a seat frame cover 7 is provided on the seat frame 5 so as to be openable and closable. The maintenance of the control pump 6 can be easily performed by opening and closing the seat frame cover 7.

Here, the mounting post 2 is in the form of a square tube and is integrally fixed upright on the rear end portions of the left and right body frames 9 at a position slightly forward of the rear axle housing 8. On the front side of the mounting post 2, a seat frame 5 including the mounting post 2 as a part is formed.
The driver's seat 3 is mounted on the upper part and supported. In front of the mounting post 2, left and right seat posts 27 are erected on the vehicle body frame 9, and a hinge 28 is provided on the seat post 27. The seat frame cover 7 is provided around the hinge 28.
And the driver's seat 3 are supported so as to be able to rotate back and forth. Connecting members 47 and 48 are provided between the front and rear seat posts 27 and the mounting posts 2 and between the left and right mounting posts 2, and the side covers 29 are attached and covered on the outside. Further, a front cover and a rear cover may be provided before and after these to cover the four circumferences and the upper surface of the seat frame 5.

The seat frame 5 extends between the rear ends of the left and right connecting members 47 and both end portions of the rear connecting member 48.
The upper end of the mounting post 2 is connected to a frame bracket 49 in the form of a socket which is integrally fixed to the upper end of the mounting post 2 by welding or the like. Can be installed with

In the seat room 30 in the seat frame 5 formed as described above, the control pump 6 for medicine or powder can be mounted. The safety frame 1 attached to the upper end of the mounting post 2 has an upper end connected in a left-right loop or gate shape.
The lower end of the mounting post 2 to the frame bracket 49 at the upper end.
Can be fitted into the socket hole 50 and tightened with the bolt 51.

On the rear end side of the mounting post 2 of the vehicle body frame 9, a mounting portion 11 on which an attachment such as the chemical tank 4 or a fertilizer can be mounted or mounted is formed. Also, on the left and right outer sides of the seat frame 5 of the body frame 9,
An upper side step floor 32 can be formed by providing a side frame 31 which is appropriately extended. Further, a front floor 33 can be provided at the front of the body frame 9 and a rear floor 34 can be provided at the rear.

The medicine tank 4 is formed in a concave shape in which an opening 35 for opening a central front portion is formed so as to surround the left and right sides from the rear of the seat frame 5. And can be mounted and mounted over the side frame 31. The chemical tank 4 can store a chemical solution or a chemical powder.

Since the mounting post 2 is formed at the rear portion of the seat frame 5 as described above, the structure can be simplified as a part of the seat frame 5, and the structure of the seat frame 5 can be minimized. Form narrowly,
The effective volume can be increased without expanding the outer periphery of the medicine tank 4 fitted to the outer peripheral portion. That is, it is possible to reduce the installation restriction of the attachment mounted on the outer peripheral portion of the seat frame 5.

The lift hitch arm 12 is provided with a bracket 3 at a portion where the post 2 is attached to the vehicle body frame 9.
A base end of the gate-shaped lift hitch arm 12 is supported between the left and right brackets 36 by the arm shaft 14 so as to be vertically rotatable. A hitch 37 capable of attaching an attachment to the tip of the lift hitch arm 12.
Having. The lift hitch arm 12 can move up and down the space between the left and right body frames 9 and has a base connected to a piston 38 of the lift cylinder 13. The lift cylinder 13 is provided at the center between the left and right body frames 9 along the front-rear direction.
9 are connected.

The mounting base 4 on which the control pump 6 is mounted.
Reference numeral 0 is configured to connect the left and right body frames 9 so as to straddle the upper part of the lift cylinder 13 to the left and right. Front floor 3 between left and right body frames 9
A transmission case 41 is provided below the three portions, and a rear wheel transmission shaft 43 is interlocked between a lower portion of the transmission case 41 and a rear differential 42 at the center of the rear axle housing 8. Further, a PTO shaft 44 having a universal joint, a telescopic shaft, and the like is provided between the upper portion of the transmission case 41 and the hitch 37. An intermediate portion of the PTO shaft 44 is supported by a lower portion of the mounting base 40 and has a take-out pulley 45, from which the control pump 6 can be transmitted via a belt, an electromagnetic clutch, or the like.

In the case where the bracket 36 and a part of the PTO shaft 44 are exposed on the mounting portion 11 on the vehicle body frame 9, the bottom of the medicine tank 4 mounted on the mounting portion 11 is also cut out correspondingly. It can be. Further, another embodiment of the mounting post 2 and the seat frame will be described. In FIG.
Are fitted and integrally attached to the outside of the mounting post 2, and a socket hole 50 is formed in the outside of the mounting post 2. The lower end of the safety frame 1 is fitted into the socket hole 50 from above and attached by tightening a bolt 51. Also, the frame bracket 4 of the safety frame 1
The fitting position with respect to 9 can also be set so that the mounting post 2 is located outside and inside.

In FIG. 7, instead of the seat post 27 and the connecting member 47, the front end of the curved arm 52 is fixed to the vehicle body frame 9 and the rear end is fixed to the frame bracket 49 in the seat frame 5. .
A bracket 53 is provided at the front of the curved arm 52,
The driver's seat 3 is supported by a hinge 28.

In FIG. 8, the structure of the seat frame 5 is such that the support bar 54 is projected horizontally from the frame bracket 49 to the front side, and the driver's seat 3 is supported by the hinge 28 on the bracket 53 at the front end of the support bar. It is in a cantilevered form. In FIG. 9, a damper 5 is attached to a connecting member 55 for connecting the left and right sides of the curved arm 52.
6 is provided to support the lower surface of the seat frame cover 7 so as to buffer the driver's seat 3 supported on the upper surface. 57 is a mounting bracket for the hinge 28 of the driver's seat 3.

According to the fifth aspect of the present invention, the driver's seat 3 is provided on the body frame 9 supported by the rear axle housing 8.
And a mounting portion 11 on which an attachment can be mounted is formed on the rear side thereof,
Lift cylinder 13 that rotates lift hitch 12 up and down
Are provided on the lower side of the seat frame 5 between the left and right body frames 9 along the front-rear direction.
3 can be provided along the lower side of the seat frame 5 between the left and right body frames 9, so that the center of gravity can be lowered in a raised floor form, and the lift hitch arm 12 at the rear can be moved up and down with good left and right balance. The weight can be reduced as a single form of lift cylinder 13. In addition, these lift cylinders 1
3 and the lift hitch arm 12 are arranged as far forward as possible with respect to the vehicle body frame 9, so that the body can be shortened and downsized.

According to a sixth aspect of the present invention, the arm shaft 14 of the lift hitch arm 12 is provided on a support bracket 15 on the front side of the rear axle housing 8. Is provided on the support bracket 15 on the front side of the vehicle body, so that the structure of the vehicle body can be made thin and the height of the lift hitch arm 12 can be maintained large as a high floor form. It can be widely used, and mounting of the attachment such as the medicine tank 4 can be facilitated.

Here, in FIG. 10, the lift hitch arm 12 bends the front part downward in a U-shape, and the front end of this bent part 58 projects to the front side of the rear axle housing 8. The arm shaft 14 is supported so as to be rotatable up and down. The piston 38 of the lift cylinder 13 is connected to the bending portion 58 of the lift hitch arm 12 by a pin 46. When the bending portion 58 is formed to be short, the lift hitch arm 12 can be configured not to protrude above the mounting portion 11.

Lift cylinder 13 and lift hitch 1
2 is substantially disposed between the upper body frame 9 and the lower rear axle housing 8, so that the thickness of the vehicle body can be reduced and a high floor configuration can be achieved. FIG.
In FIG. 12, a fertilizer is mounted as an attachment on a mounting portion 11 at the rear of the body frame 9. This fertilizer application device is composed of a fertilizer application tank 59 that accommodates fertilizer in the upper part, a feed device 60 that feeds fertilizer from the tank 59, a fertilizer pipe 61 that guides the fed fertilizer to the soil surface, and the like. The fertilizer application frame 62 supporting such a fertilizer application device can be mounted on the mounting portion 11 of the vehicle body frame 9.

[Brief description of the drawings]

FIG. 1 is a side view of a tractor.

FIG. 2 is a side view of a part thereof.

FIG. 3 is a rear view thereof.

FIG. 4 is a plan view thereof.

FIG. 5 is a perspective view of a part thereof.

FIG. 6 is a perspective view of a mounting post showing another embodiment.

FIG. 7 is a perspective view of a mounting post showing a partly different embodiment.

FIG. 8 is a perspective view of a mounting post showing a partly different embodiment.

FIG. 9 is a perspective view of a mounting post showing another embodiment.

FIG. 10 is a side view of a lift arm portion showing a partially different embodiment.

FIG. 11 is a side view of a mounting portion showing another embodiment.

FIG. 12 is a rear view thereof.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Safety frame 2 Mounting post 3 Driver's seat 4 Chemical tank 5 Seat frame 6 Control pump 7 Seat frame cover 8 Rear axle housing 9 Body frame 11 Mounting part 12 Lift hitch arm 13 Lift cylinder 14 Arm shaft 15 Support bracket

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) A01M 7/00 A01M 7/00 D B60R 21/11 650 B60R 21/11 650E 21/13 21/13 A B62D 25/16 B62D 25/16 H J 33/06 33/06 E

Claims (6)

[Claims] A tractor for administrative work, wherein a mounting post (2) for mounting a base of a safety frame (1) is provided at a rear portion of a driver's seat (3). 2. A tractor for management work according to claim 1, wherein a medicine tank 4 formed so as to surround left and right side portions and a rear side portion of the driver's seat 3 and the mounting post 2 is mounted. 3. A tractor for administrative work, wherein a control pump 6 is provided below a seat frame 5 supporting a driver's seat 3. 4. The management tractor according to claim 3, wherein a seat frame cover is provided on the seat frame so as to be openable and closable. 5. A seat frame 5 for supporting a driver's seat 3 is provided on a vehicle body frame 9 supported by a rear axle housing 8, and a mounting portion 11 on which an attachment can be mounted is formed behind the seat frame 5. Arm 12
A tractor for management work, wherein a lift cylinder 13 that rotates vertically is provided along the front-rear direction below the seat frame 5 between the left and right body frames 9. 6. The tractor according to claim 5, wherein an arm shaft of the lift hitch arm is provided on a support bracket on a front side of a rear axle housing.