JPH0134003B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to a rear work implement mounting device for a small lawn mowing tractor called a small mower tractor among agricultural tractors.

(b) Prior Art The technology of integrating a check chain bracket, a lower link bracket, and a top link bracket has been known.

Furthermore, a technique in which a check chain bracket and a drawbar bracket are integrated is also known.

For example, Utility Model Application Publication No. 50-24607, Japanese Patent Application Publication No. 52
This is similar to the technology described in Publication No.-21102.

(c) Problems to be solved by the invention However, in the above-mentioned conventional technology, since there is no body frame that protrudes from the front end to the rear end of the body,
Unavoidably, parts to which lower link brackets, drawbar brackets, and check chain brackets were attached had to be integrated with the top link bracket, or larger reinforcing plates were protruded from the transmission case to reinforce the strength of these parts.

The present invention utilizes a body frame provided on a frame tractor, and has a structure that eliminates the need for extra reinforcement as in the prior art.

In addition, a mower tractor has a rotary mower attached to its abdomen as a mid-mount work device, and is often used exclusively for mowing lawns in gardens, but as a special specification, it may be equipped with a grass catcher etc. at the rear. , it may be required to provide a rear work equipment mounting device. Since there is almost no need for the standard specification, it is sufficient that it is a special specification and that it can be easily installed according to the request.

In order to meet this demand, the present invention uses the rear ends of the fuselage frames to attach U-shaped brackets to the rear ends of the left and right fuselage frames, and integrates the lower link bracket, drawbar bracket, and check chain bracket. It is.

The PTO case can also be removed from the rear end of the transmission case only when necessary.

This allows it to be removed if it is not needed.

(d) Means for Solving the Problems The objects of the present invention are as described above, and the configuration for achieving the objects will now be explained.

Lift arms 3L and 3R provided near the rear end of the mission case 10 are made vertically movable via a link 23 and an arm 21 by a mower lifting device provided at the front of the mission case 10. The PTO case 12 is detachably attached to the end face, and the fuselage frames 1L and 1R protrude further rearward from the rear end of the mission case 10, and a U-shaped bracket 6 is attached to the lower part of the fuselage frames 1L and 1R. Lower link pins 26, 26 and drawbar bracket 1 are attached to the shape bracket 6.
8 and a check chain bracket 16 are integrally attached.

(E) Embodiment The object and structure of the present invention are as described above. Next, the structure of the embodiment shown in the attached drawings will be explained.

1 is a side view of the work machine mounting device, FIG. 2 is a rear view, FIG. 3 is a plan view, and FIG. 4 is a side view of the check chain.

1L and 1R are body frames, which extend from the front end of the tractor body to the rear end of the body.

An engine is mounted at the tip of the fuselage, and a transmission case 10 is held at the rear. PTO shaft 2 is attached to the rear of the transmission case 10.
PTO case 12 with 0 and PTO clutch device
is configured so that it can be installed.

This PTO case 12 also needs to be installed and removed together with the integrated U-shaped bracket 6.

In order to move the rotary mower attached to the abdomen of the tractor up and down, a hydraulic or manual lift device is provided at the center side of the machine body, and a link 23 extends rearward from this lift device, and an arm 21 is connected to. The arm 21 is fixed to a lift arm shaft 22, and lift arms 3L and 3R are fixed to the left and right positions of this lift arm shaft 22.

Further, a top link bracket 25 is permanently fixed on a mounting table 24 for batteries, etc., which is suspended over the upper surfaces of the left and right fuselage frames 1L and 1R, and the top link 2 is pivotally connected to this top link bracket 25. There is.

Lift links 4L, 4R are extended from the left and right lift arms 3L, 3R, and lift links 4L, 4
The lower end of R is pivotally connected to the lower link 5.

As shown in FIG.
It is constructed into a letter-shaped bracket 6.

Lower link pins 26, 26 are attached to the vertical rod 6a of the U-shaped bracket 6 to form a lower link bracket, and the horizontal rod 6 of the U-shaped bracket
A reinforcing plate 15 is welded to the portion b, and a drawbar bracket 18 is fixed to the reinforcing plate 15 by welding.

A check chain bracket 16 is fixed to the rear surface of the reinforcing plate 15 with bolts 29.

The U-shaped bracket 6 is fixed to the fuselage frame 1.
A vertical reinforcing plate 30 is fixed to L and 1R from the side surface with upper and lower bolts 27, 27, and is fixed from the lower surface of the body frame 1 with a bolt 28. Then, the lower link pin 26 is attached to the joined part of the vertical reinforcing plate 30.
is fixed.

Additionally, horizontal reinforcing rods 9L and 9R are installed between the transmission case 10 and the transmission case 10 to provide reinforcement against the tensile force exerted by the drawbar bracket 18.

The drawbar bracket 18 is welded and fixed to the horizontal rod 6b of the U-shaped bracket 6 from above.

Reference numeral 7 designates a check chain, which adjusts the swing width of the lower link to prevent it from swinging from side to side when the work machine is attached, and is provided with a turnbuckle device.

The U-shaped bracket has bolts 27, 27, 28,
28. It can be easily attached and detached by attaching and detaching the horizontal reinforcing rods 9L and 9R.

Furthermore, since the PTO case 12 is not lubricated by an oil bath, it can be easily attached to and removed from the transmission case 10.

(F) Effects of the Invention Since the present invention is configured as described above, it has the following effects.

First, a U-shaped bracket that integrates a lower link pin, a drawbar bracket, and a check chain bracket can be attached to the left and right fuselage frames that extend to the rear end of the fuselage, so customers who want to mount work equipment on the rear of the machine can The U-shaped bracket, the lower link pins 26, 26 attached to it, the drawbar bracket 18, and the check chain bracket 16 only need to be installed when there is a request for this.In the standard specification where only a mid-mount mower device is used, they are removed. It is possible to easily create a variety of specifications and provide it at a reasonable price.

Second, on the rear end surface of the mission case 10,
The PTO case 12 is also removable, and the lift arms 3L and 3R are linked to the mid-mount mower equipment lifting device, so if there is no need to attach a working machine to the rear, these can also be removed. It was designed so that it could be easily converted into a standard specification with a mid-mount mower device attached to the abdomen, and a special specification with a working machine attached to the rear of the fuselage.

Third, the mission case 10, the fuselage frames 1L and 1R, and the U-shaped bracket 6 create a square frame structure when viewed from the rear, which improves the strength of the rear of the fuselage. .

[Brief explanation of drawings]

1 is a side view of the work machine mounting device, FIG. 2 is a rear view, FIG. 3 is a plan view, and FIG. 4 is a side view of the check chain. 1L, 1R...Airframe frame, 6...U-shaped bracket, 6a...Vertical rod, 6b...Horizontal rod, 15...
...Reinforcement plate, 16...Check chain bracket, 18...Drawbar bracket, 26...Lower link pin.

Claims (1)

[Claims] 1 Connect the lift arms 3L and 3R provided near the rear end of the transmission case 10 to the link 23 and the arm 21.
The transmission case 10 can be moved up and down by a mower lifting device provided in front of the transmission case 10, and the PTO case 12 can be attached and detached from the rear end surface of the transmission case 10. It protrudes further rearward from the rear end of
A U-shaped bracket 6 is attached to the lower part of the body frames 1L, 1R, and lower link pins 26, 26, a drawbar bracket 18, and a check chain bracket 16 are integrally attached to the U-shaped bracket 6. Work equipment attachment device for agricultural tractors.