JPH0512134Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a mounting structure for a safety frame of a tractor.

(Prior art) Conventionally, in the case of small tractors equipped with detachable front loaders, front loader posts are attached to the left and right sides of the vehicle body, so the columns supporting the top plate of the safety frame are It had a two-post structure with only a pair of left and right rear pillars connected to the rear end of the board.

(Problems to be Solved by the Invention) However, according to the above structure, the top plate has a cantilevered structure, which poses a problem in terms of strength.

In addition, when a tractor is equipped with a front loader at the front and a backhoe at the rear, the weight of the equipment becomes large, and a stronger safety frame is required.

Therefore, in view of the above problems, the present invention aims to improve the strength of the safety frame.

(Means for Solving the Problem) The technical means includes a safety frame 51 in which a top plate 54 is supported by pillars 52 and 53 to cover the upper part of the driver's seat 14,
The front and rear ends of the top plate 54 are supported by a pair of left and right front columns 52 and a pair of left and right rear columns 53, respectively, in which the posts 18 of the front loading work machine 17 are attached to the left and right sides of the top plate 54, respectively. Each rear strut 53 is connected to the rear end on the vehicle body 4 side, and each front strut 5
2 is connected to the front end of the vehicle body 4 through a position that avoids interference with the front-loading working machine 17.

(Function) According to the present invention, the top plate 54 has a four-pillar structure in which the front end and the rear end are each supported by four pillars: a pair of left and right front pillars 52 and a pair of left and right rear pillars 53, The load from falling objects is distributed to each support column 52, 53, and the strength can be improved.

(Embodiment) Hereinafter, the first embodiment of the present invention will be described based on the drawings. In Figs. This constitutes the vehicle body 4. Further, side frames 30 are provided in the front and back direction along both lower sides of the transmission case 2, and the front end of each side frame 30 is connected to a front axle frame 32 constituting the front axle bearing stand 9 by a connecting frame 31. connected. Further, the middle and rear portions of the left and right side frames 30 are connected to each other by a connecting member, and this connecting member is connected to the lower surface side of the mission case 2. A rear connecting plate 33 connects the rear side surface of the mission case 2 and the rear side of the side frame 30 to each other. The vehicle body 4 is also provided by these side frames 30, connection frame 31, front axle frame 32, rear connection plate 33, etc.
constitutes part of.

A rear axle case 5 protrudes left and right from the rear left and right sides of the transmission case 2. A rear wheel 7 is attached to an outer end 6 of a rear axle housed in the rear axle case 5, and a fender 8 of the rear wheel 7 is attached to the vehicle body 4.

Also, below the front axle bearing stand 9 is a front axle case 10.
is attached via a pivot 11 so as to be swingable left and right,
A front wheel 13 is attached to an outer end 12 of a front axle housed inside this front axle case 10.

A driver's seat 14 is provided between the left and right rear wheel fenders 8, a front wheel steering handle 15 is provided in front of the driver's seat 14, and a bonnet 16 that covers the engine and the like is provided in front of the driver's seat 14.

Reference numeral 17 designates a front loader, which includes left and right support posts 18 attached to both left and right sides of the vehicle body 4 in front of the driver's seat 14, left and right booms 19 attached to the support posts 18, a bucket 20 attached to the tip of the boom 19, and a post 18. It includes a support brace 21 that spans the vehicle body 4, a boom lifting cylinder 22, a bucket swing cylinder 23, a connecting member 24 that connects the front end of the brace 21, a connecting member 25 that removably connects the upper end of the post 18, and the like. There is. The lower end portion of the support post 18 is fitted and fixed in a post receiving portion 35 on a mounting bracket 34 provided outwardly projecting from the side frame 30.
In addition, the connecting member 24 of the brace 21 is mounted and fixed on a receiving portion 37 of a brace support plate 36 provided in an upwardly protruding manner from the front end of the front axle frame 32, and the front loader 17 is mounted on the vehicle body 4 side here. It will be attached removably.

Reference numeral 40 denotes a backhoe, which is attached to the base 4 at the rear of the vehicle body 4 via a top link 41 and a mounting bracket 34.
3 is installed. An operation box 44 and a first boom 45 are attached to the base 43, a second boom 46 is attached to the first boom 45, and a bucket 47 is attached to the second boom 46.
And the cylinder 4 for raising and lowering each boom 45, 46
8, 49 and a bucket swing cylinder 50. Note that the position of the driver's seat 14 can be changed as shown by the imaginary line when operating the vacuum cleaner 40.

51 is a safety frame with a pair of left and right front supports 52
It has a four-pillar structure in which a top plate 54 that covers the upper part of the driver's seat 14 is supported by a pair of left and right rear columns 53.

The lower end of each rear strut 53 is attached to the rear axle case 5 with a bolt (not shown), and the upper end is welded (or bolted) to the rear end of the top plate 54.
Further, the upper end of each front strut 52 is welded (or bolted) to the front end of the top plate 54, and the lower end is bolted to a mounting bracket 55 that protrudes outward from the front end of the front axle frame 32. (not shown). The front support 52 is connected to the boom 19 and brace 21 so that there will be no hindrance to loader work or attachment/detachment work by the front loader 17.
and the side plate of the bonnet 16.

As mentioned above, in a structure equipped with the front loader 17 and the backhoe 40, a large amount of oil is required. is provided to ensure sufficient oil capacity.

The first embodiment of the present invention is constructed as described above, and since the safety frame 51 has a four-column structure,
Strength against falling objects can be improved. Also, front strut 5
2 is connected to the front end of the vehicle body 4, even if it is a small tractor 1, a space for getting on and off can be effectively ensured.

When the front loader 17 is to be removed, the connection of the connection member 25 is released, the fixation between the post 18 and the post receiver 35 and the fixation between the connection member 24 and the receiver 37 are released, and then the post 18 is removed. It is only necessary to raise and rotate it forward, and the attachment/detachment work can be easily performed without interference with the front strut 52.

FIG. 3 shows a second embodiment, in which the rear strut 53
The lower end of the side frame 30 is connected to the rear part of the side frame 30. In this case, the safety frame 51, side frame 30, connection frame 31, and front axle frame 32 constitute a rigid frame structure, and a strong frame structure is created without imposing any strength burden on the transmission case 2 side. Can be provided.

Note that the side frames 30, the connecting frame 31, etc. may be integrated or may have a structure in which a plurality of members are sequentially connected.

(Effects of the invention) According to the invention, a safety frame is provided in which the top plate is supported by pillars to cover the area above the driver's seat, and posts for front-loading work equipment are installed on both left and right sides of the vehicle body in front of the driver's seat. When installed, the front and rear ends of the top plate are supported by a pair of left and right front struts and a pair of left and right rear struts, respectively, and each rear strut is connected to the rear end of the vehicle body. The front strut is connected to the front end of the vehicle body through a position that avoids interference with the muzzleloading machine, and can effectively improve the strength against falling objects. It's not an obstacle in any way.

[Brief explanation of the drawing]

FIG. 1 is a side view of a tractor showing a first embodiment of the present invention, FIG. 2 is a front view thereof, and FIG. 3 is a partial side view showing a second embodiment. DESCRIPTION OF SYMBOLS 1...Tractor, 4...Vehicle body, 14...Driver's seat, 17...Front loader, 18...Support post, 51...Safety frame, 52...Front support, 5
3...Rear support, 54...Top plate.

Claims (1)

[Scope of utility model registration request] In order to cover the upper part of the driver's seat 14, the top plate 54 is attached to the support 5.
The front end of the top plate 54 and the posts 18 of the front-loading working machine 17 are respectively attached to the left and right sides of the vehicle body 4 in front of the driver's seat 14. The rear end portions are supported by a pair of left and right front struts 52 and a pair of left and right rear struts 53, each rear strut 53 is connected to the rear end portion on the vehicle body 4 side, and each front strut 52 is supported by a pair of left and right front struts 52 and a pair of left and right rear struts 53.
A safety frame mounting structure for a tractor, characterized in that the structure is connected to a front end portion of a vehicle body 4 through a position that avoids interference with a tractor 7.