JPH0229Y2 - - Google Patents

Description

[Detailed Description of the Invention] (a) Field of Industrial Application The present invention relates to a lifting device for a reel mower attached to the side of a mower tractor for mowing grass at golf courses, etc.

(b) Prior Art Reel mower devices for mowing grass at golf courses, etc. have been known for a long time. In order to lift the conventional reel mower in a vertical direction when viewed from the side, the rotation shaft 12' of the lift link was attached parallel to the ground as shown in FIG.

(c) Problems to be solved by the invention When three reel mowers are attached to the front of a mower tractor and two reel mowers are attached to the abdomen, as shown in Figure 9,
It can be seen that efficiency is improved by moving the side mowers 2L and 2R as close to the front wheels 4 as possible in order to obtain a large cutting width even when making sharp turns such as around a bunker. However, if the side mower is lifted perpendicular to the ground in side view as in the past, there is a limit to how close the side mower can be to the front wheels, and if the distance A between the front wheels 4 and the lift link is narrowed as shown in Figure 8,
The front wheel would come into contact with the lift link.

(d) Means for solving the problem In order to solve the above-mentioned problems, the present invention is constructed as follows.

In a mower tractor with a reel mower placed on the side of the front wheel of the tractor, the pivot axis of the lift link is tilted so that the upper end of the reel mower moves away from the front wheel when the reel mower rises, and the position of the reel mower when it touches the ground is as close to the front wheel as possible. It is something.

(E) Embodiments and operations The purpose of the present invention is as described above, and the structure and operation of the present invention will be explained based on the embodiments shown in the attached drawings.

Figure 1 is an overall side view of an agricultural tractor equipped with a reel mower. Figure 2 is also a plan view. FIG. 3 is a front view showing the front side mower and the elevation of the side mower. Figure 4 is a side view of the side mower lifting section. Figure 5 is also a front view. Figure 6 is a plan view of the base of the side mower lift link. Figure 7 is also a side view. 8th
The figure is a schematic diagram showing a conventional lift and a lift according to the present invention.

An explanation will be given based on the overall configuration shown in FIGS. 1, 2, and 3. An engine is mounted in the bonnet 3 behind the seat 6, and a handle 8 projects from a dash board 7 in front of the seat. In FIG. 3, 17 is an accelerator pedal, 18 is a brake pedal, and 19 is a clutch pedal. Front mid mowers 1M are arranged between the front wheels 4, 4, and front side mowers 1L, 1R are arranged in front of the front wheels 4, 4.

Since the bases of the lift arms 24, 25, and 26 are coaxially provided, the front mowers 1L, 1M, and 1R can move up and down simultaneously when the hydraulic cylinder 20 is expanded and contracted. Also, when the hydraulic cylinder 20 is reduced, the lift arms 24, 2
Spring unit 2 provided near 5 and 26
At points 1, 22, and 23, the front mower is buffered near where it touches the ground, preventing damage to the mower and allowing it to swing. Also, front side mower 1L, 1
When R is raised, it is guided by the lifting guides 27L and 27R as shown on the left side of FIG. 3, and the outer side is lifted up substantially vertically when viewed from the front, making it possible to store it.

Side mowers 2L, 2R implementing the present invention are arranged between the front wheels 4, 4 and rear wheels 5, 5, and hydraulic cylinders 16L, 16R provided below the step 15.
As shown on the right side of FIG. 3, it is lifted up and stored substantially vertically when viewed from the front. The structure of the side mower 2L will be described in detail with reference to FIGS. 4 to 8.

Lift link 10 that lifts side mower 2L
The tip of the L is connected to the pivot 11 to enable rolling. The base of the lift link 10L is pivotally supported by a pivot shaft 12, and a boss 30 is fixed to the base. As shown in FIG. 7, the rotation fulcrum shaft 12 is tilted at an angle θ and is pivotally supported by a bracket 13 fixed to the tractor body, and also pivotally supports an arm 14. A connecting pin 9 and a cylinder pin of a piston rod of a hydraulic cylinder 16L are pivotally connected to the tip of the arm 14. Therefore, when the hydraulic cylinder 16L is extended, the arm 14 rotates, and the boss 30 is rotated via the connecting pin 9.
The lift link 10L is rotated diagonally backward in side view, and the side mower 2L is raised so that the upper end of the side mower 2L is separated from the front wheel 4.
Also, the side mower 2L rises parallel to the ground to the position 2L' by the rotation of the lift link 10L, but when the link 10L is further rotated, the resistance plate 2 protruding laterally from the side plate of the side mower 2L
8 comes into contact with a guide roller 29 protruding from the machine frame, and the side mower 2L is lifted in the vertical direction when viewed from the front using the guide roller 29 as a fulcrum. 31 is a hydraulic motor, 32 is a gear case, 33 is a front roller, 34 is a rear roller, 3
5 is a reel, and 36 is a bed knife.

The present invention may also be applied to the aforementioned front mowers 1L and 1R located in front of the front wheels of the tractor.

(f) Effects of the invention Since the invention is constructed as described above, the following effects can be obtained.

That is, when the lift link is rotated in this way,
When viewed from the front, the reel mower is raised almost vertically,
When viewed from the side, as shown in FIG. 8, the lift links are tilted rearward and lifted, and compared to conventional lift links, the gap was A, but can now be widened to B. Therefore, the front wheel 4 and the lift link no longer come into contact with each other, and the reel mower is no longer damaged.
Furthermore, since the reel mower can now be moved closer to the front wheels, the efficiency of reaping during sharp turns has also been improved.

[Brief explanation of the drawing]

Figure 1 is an overall side view of an agricultural tractor equipped with a reel mower. Figure 2 is also a plan view. FIG. 3 is a front view showing the front side mower and the elevation of the side mower. Figure 4 is a side view of the side mower lifting section. Figure 5 is also a front view. Figure 6 is a plan view of the base of the side mower lift link. Figure 7 is also a side view. 8th
The figure is a schematic diagram showing conventional lifting and lowering and lifting according to the present invention. FIG. 9 is a schematic diagram showing the mowing range when making a sharp turn. 1L, 1M, 1R...Front mower, 2L, 2
R...Side mower, 10L, 10R...Lift link, 12...Rotation fulcrum shaft.

Claims (1)

[Scope of utility model registration request] In a mower tractor in which the reel mower is placed on the side of the front wheel of the tractor, the lift link 1 is attached so that the upper end of the reel mower moves away from the front wheel when the reel mower is raised.
A lifting device for a reel mower, characterized in that rotation fulcrum shafts 12 of 0L and 10R are inclined.