JPS63254918A - Mower apparatus of riding lawn mower - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Field of Industrial Application] This invention relates to a mower device for a riding lawn mower, and in particular to a mower device for a riding lawn mower, in which a speed change mechanism is provided for each of the left and right rotary plate shafts, and these are connected to a steering mechanism. This invention relates to a mower device for a lawn mower.

[Problems to be solved by the prior art and the invention] Conventional riding lawn mowers equipped with multi-blade mowers rotate during operation, whereas the left and right rotary plates rotate at the same rate. Since the moving speed of the outer part was faster than that of the inner part, the reaping pitch became coarser, resulting in a large amount of reaping. In addition, although the amount of mowing at the outer side of the turning direction increases, the discharge air due to the rotation of the rotary plate is constant on both sides, making it difficult to discharge the grass clippings, which is a drawback. Technical problems arise.

[Means for solving problems]

This invention was proposed in view of the above-mentioned problems and to solve the problems. 1. In the mower device of a riding lawn mower, a drive input section is provided on the rotary plate in the center, and the drive input section is connected to the left and right rotary plate shafts. The transmission is transmitted via each transmission mechanism, and each transmission mechanism and steering mechanism are connected by an interlocking mechanism, and the operation of the interlocking mechanism that follows the steering operation when the riding lawnmower is turned causes the outer side of the turning It is an object of the present invention to provide a mower device for a riding lawn mower, characterized in that it is configured to be able to increase the speed of rotation of the zero axis of the rotary plate.

[Effect]

In this invention, the rotation of the rotary plate shaft in the center of the mower device is transmitted to the left and right rotary plate shafts via transmission mechanisms, respectively. Then, each transmission mechanism and steering mechanism are connected by an interlocking mechanism, and by operating the steering wheel, either the left or right transmission mechanism can be changed! The rotary blade shaft is operated to increase the rotation speed of the rotary blade shaft. Therefore, even if the moving speed of the outer turning portion is accelerated compared to the inner turning portion when the lawn mower turns, the mowing pitch becomes denser due to the increased speed of rotation of the rotary plate. Further, as the rotation of the rotary plate increases, the amount of discharged air increases, and the cut grass can be easily discharged. Thus, a riding lawn mower equipped with a single multi-blade mower can cut evenly on both sides even when turning.

[Example] Hereinafter, an example of the present invention will be described in detail with reference to the attached drawings. In addition, as long as the purpose and effect of this invention are the same,
It goes without saying that the present invention is not limited to the following embodiment, but extends to other similar configurations. In Figures 1 and 2, the lifting arm (21) is located in front of the tractor (1).
2) is provided protrudingly, and the platen (4) (4) of this tip (3) is pivotally attached. A blade shaft (5) is pivotally attached to the central front part of the mower deck (3), and blade shafts (6) are mounted on the left and right sides of the mower deck (3), respectively.
(Power is pivoted. The upper end of this blade shaft (5) protrudes from the upper surface of the moadetsuki (3), and the bevel gear (8> (
A pulley shaft (
Set tα. A passive pulley ttU is pivoted to the tip of this boo 11# (101), and the belt 0 floor is installed between it and the engine output goo +1 + IZ.

The blade shaft (5) is configured to rotate by driving the engine output pulley 0z. In addition, a rotary plate 04J is fixed to the lower end of the blade shaft (5), and a two-stage pulley is installed in the middle of the blade shaft (5).
Pivotally connect O5. and a belt converter fHil 1161Y is pivotally connected to the blade shaft (6), respectively,
Furthermore.

Rotary blade α at the lower end of the blade shaft (6X7)
At the same time as fixing ηa, the second belt converter Q61
(] A belt aan is connected between G and the two-stage pulley α9, respectively.
81 will be constructed. Then, arm Q! is installed inside the belt a8as. 1 (19) is brought into contact with the tension pulley
Qυ is projected onto the upper surface of the mower deck (3), and an arm ■■ is fixed to the upper end of this pivot shaft r211c2υ to form a transmission mechanism θ together with the belt converter a61as. Then, wire C to the tip of this arm.
I! 4J G4) and lock one end of the wire c.
4Connect the other end of the JC2i to both ends of the steering mechanism (c)■
The steering mechanism G and the transmission mechanism are respectively locked to form an interlocking mechanism (2). In addition, the code|symbol (2) is a support piece of the said wire C21.

In this embodiment, the rotation of the engine output pulley α2 is transmitted to the blade shaft (5) as described above.
The belt converter αblQG is driven by the belt bet aδ suspended on the two-stage pulley α9.

The left and right rotary plates aη (17) also rotate at the same rotational speed. Here, when changing the traveling direction of the tractor (1), for example, to turn leftward, the steering wheel G1 is rotated counterclockwise. Then, the right end portion of the steering mechanism (to) rotates rearward, and by pulling the wire +2 (+), the right arm ■ moves in the direction of the arrow around the pivot axis Qυ, as shown in Figure 3. Therefore, the arm (2) fixed to the lower end of the pivot shaft (2D) rotates in the same direction, and the tension pulley (2) rotates in the same direction.
Belt tension in the direction of the arrow. Also, as shown in Figure @4, the belt converter (161 is the pulley (16a)
The contact surface of b) is tapered, and the pulley on one side (1
6b) is urged toward the pulley (16a) by a spring (16c). Therefore, the belt 08 is pulled and the boot 1
3 (16b), the contact portion of the belt a8 moves toward the center axis (16d), the pulley diameter becomes smaller, and the rotation speed of the center axis (16d) is increased.

Although the configuration of this belt converter (lE9) belongs to the conventionally known structure, in FIG.
The diameter of the pulley becomes smaller and the rotational speed increases.

That is, when turning the tractor (1) to the left.

The rotational speed of the right rotary plate αη on the outer side of rotation is increased. Further, when the tractor (1) turns to the right, the rotational speed of the ITJ is increased by the belt converter ae on the left side.

In this way, no matter which direction the tractor (1) turns, the rotational speed of the rotary plate on the outside of the turn is increased by operating one steering wheel.

This allows the left and right cutting pitch to be maintained constant.

〔Effect of the invention〕

As described in detail in the above-mentioned embodiment, in this invention, when a lawn mower equipped with a multi-blade mower turns, the rotation speed of the rotary plate shaft on the outside of the turning direction is increased in accordance with the steering operation.

Therefore, the amount of cutting on the outer side, which conventionally occurred, is eliminated, and the cutting density during one turn can be made uniform on the left and right sides. Since the rotational speed of the rotary plate on the outer side of the turning side increases, the exhaust air generated by the rotary plate increases.

Even if the amount of mowed lawn grass increases rapidly, it can be easily discharged. This invention has various effects such as equalizing the cutting pitch on the left and right sides no matter which direction the lawnmower turns, improving work efficiency.

[Brief explanation of drawings]

The figure shows one embodiment of the invention. FIG. 1 is a plan view of the tractor, FIG. 2 is a partially cutaway side view of the same, FIG. 3 is a plan view of the main part of the transmission mechanism, and FIG. 4 is a vertical sectional view of the main part of the belt converter. Code explanation (3)...Moadetsuki (5) (6) (7)...Blade axis α
...Rotary plate a horizontal °°゛°°°belt converter @...Transmission mechanism (to)...Steering mechanism (to)...Interlocking mechanism patent application People Iseki Agricultural Machinery Co., Ltd. - Ichiban Agent Patent Attorney Takashi Hayashi Tongue i゛-・, 1

Claims (1)

[Claims] In the mower device of a riding lawn mower, a drive input section is provided on the rotary plate shaft in the center, and a drive input section is provided to transmit power to the left and right rotary plate shafts via a transmission mechanism, respectively, and an interlocking mechanism that connects each transmission mechanism and steering mechanism. The riding lawn mower is configured such that the rotation speed of the rotary plate shaft on the outside of the turning direction can be increased by the operation of the interlocking mechanism that follows the steering operation when the riding lawn mower turns. Machine mower device.