JPH05184217A - Lawn mower - Google Patents

Abstract

PURPOSE:To facilitate the maintenance of the lawn mower by swinging the mower in a raised posture in the state that the front part of a body frame is upward shunted. CONSTITUTION:A pushing member 16 for pushing up the front part of a body frame 3 by the raising swing of the mower 7 is installed. The pushing member 16 is engaged with the mower swung in the raised posture, and there is installed on the body frame, a backward falling-preventing stopper 17 for holding the mower in the raised posture against a moment in the backward-falling direction which acts through the pressing member and is caused by the weight of the body.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle body in which a mower is arranged in a lower space of a vehicle body frame so that a rear portion of the mower can be inserted into a portion in front of the front wheel. More specifically, the present invention relates to a lawn mower attached to a frame, and more particularly to a technique for improving the maintainability of a mower.

[0002]

2. Description of the Related Art When a mower is detached from a vehicle body frame to perform maintenance on the mower, it is easy to perform maintenance on the mower itself because it is an open work. It requires a lot of pre- and post-work, and overall workability is poor. Therefore, it is desired to maintain the mower with good workability while keeping it attached to the vehicle body frame.To this end, the front end of the mower is lifted so that the lower surface of the mower faces forward and the mower is shook. Need to move. Considering that, when the height of the body frame is low, the mower cannot hit the body frame in the middle of the rocking to a predetermined standing posture even if the mower is rocked as described above. Of the vehicle body frame, a portion above the mower is arranged high to secure a swinging space for the mower, or even if the mower is placed as far forward as possible to swing the mower, I was trying not to hit.

[0003]

However, among the above-mentioned prior arts, in order to cope with the problem by raising the body frame, stabilization and compactness of the body due to the low center of gravity desired for lawnmowers, especially small lawnmowers. However, if the mower is placed in the front, the amount by which the front end of the mower projects further forward than the body frame becomes long, and the aircraft only increases in size in terms of overall length. However, the radius of the moving locus of the front end of the mower at the time of turning becomes large, which causes the inconvenience that the maneuverability and handleability of the machine body deteriorate. An object of the present invention is to make it possible to perform maintenance work with good workability by causing the mower to swing to the above-described standing posture with the mower attached to the vehicle body frame without inviting the above-mentioned inconvenience. is there.

[0004]

The lawn mower according to the present invention is characterized in that the rear part of the lawn mower is inserted into a part of the lower space of the vehicle body frame which is in front of the front wheels, and swings via a link. A mower that is attached to the body frame so as to be able to move up and down is provided with a push-up portion that pushes up the front portion of the body frame as the mower is erected in a direction of raising the front end with the ground contact portion at the rear end as a fulcrum. By contacting the mower that is rocked in a standing posture in which the pusher is located rearward of the ground contact portion, the moment in the backward tilt direction due to the weight of the machine body acting through the pusher is resisted. The rear fall prevention stopper for holding the mower in the standing posture is provided on the vehicle body frame.

[0005]

When the mower is swung to the standing posture for maintenance with the lower surface facing forward, it hits the body frame during the swing. However, it is not possible to swing the mower to the standing posture by devising it so as not to hit it. However, even after hitting, the front part of the body frame is continuously swung so as to be pushed up, so that the mower is swung to the upright posture in a state of avoiding the front part of the body frame upward, so to speak. When swinging the mower in the upright posture, it is not necessary to raise the front portion of the vehicle body frame or arrange the mower in front.
Moreover, by devising the arrangement of the push-up part and the rear fall prevention stopper, the moment of the body weight in the standing posture in the direction of the rear fall is generated so that the rear fall prevention stopper hits and the body weight , While holding the mower in a standing posture with the lower surface facing forward while pushing up and supporting the front part of the body frame, at the same time holding the body frame in an inclined position in which the front part is pushed up and the front wheels are lifted from the ground. A movable structure is not required to hold the posture of the mower and the body frame, and not only a simple structure for holding the posture is required, but also an operation for swinging one mower as an operation for bringing the mower to the standing posture. In addition, the posture can be maintained with high reliability.

[0006]

Therefore, according to the present invention, workability is improved,
In addition, it is possible to provide a lawnmower that is capable of safely performing maintenance on the mower, has a simple structure for that purpose, and is easy to implement, and is particularly small and lightweight.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIG. 1, a lawn mower includes a vehicle body frame 3 having front wheels 1 for driving and rear wheels 2 for driving and steering.
Engine 4, steering handle 5 and driver's seat 6
And the mower 7 is arranged so that the rear part of the lower space of the vehicle body frame 3 can enter the front part of the vehicle body frame 3, and the mower 7 can be swung up and down via a link 8 to move the vehicle body frame. 3 and is provided with an elevating means for vertically moving the mower 7. The mower 7
Is pivotably attached to the front end of the link 8 about the horizontal axis X1 at the front end of the link 8, and detachably attached to the lower end of the suspension link 9 attached to the front and rear intermediate part of the link 8 near the rear end. It is connected. That is, the link 8 is attached to the vehicle body frame 3 so as to move up and down with respect to the vehicle body frame 3 by swinging up and down around the attachment axis X2. And Moor 7
Has a rearward-facing input shaft 10, and the input shaft 10 is
Forward power extraction shaft 11 mounted on the vehicle body frame 3
It is configured to be driven by interlocking with the drive shaft 12 via the drive shaft 12. Of course, the drive shaft 12 is connected to each of the input shaft 10 and the power take-off shaft 11 by using a universal joint. Then, as shown in FIG. 1, the swinging posture around the horizontal axis X1 with respect to the link 8 is maintained in the set posture while being connected to the suspension link 9 and the input shaft 10 being interlockingly connected to the drive shaft 12. Lawn mowing, and as shown in Figs. 2 and 3,
With the connection to the suspension link 9 released and the interlocking connection of the input shaft 10 to the drive shaft 12 released, swinging around the horizontal axis X1 with respect to the link 8 is allowed,
It is configured such that it can be oscillated for standing up in the direction of lifting the front end with the ground contact portion at the rear end as the fulcrum R. The elevating means is provided with a hydraulic cylinder 14 for swinging and driving the link 8 upward through the relay link group 13 so that the ascending operation is driven by the hydraulic cylinder 14 and the descending operation is performed by the weight of the mower 7. It is configured. Then, FIG. 2 and FIG.
As also shown in FIG. 3, the mower 7 is pressed from below while sliding on the receiving plate portion 15 attached to the front portion of the vehicle body frame 3 in accordance with the standing swing around the fulcrum R. Therefore, the push-up portion 16 that pushes up the front portion of the vehicle body frame 3 is provided. On the other hand, the body frame 3 must be brought into contact with the mower 7 in a standing posture in which the lower surface of the body frame 3 is swung by pushing up the front portion of the body frame 3 and the push-up portion 16 is located rearward of the ground contact portion A. Therefore, the pusher 16
The rear fall prevention stopper 17 that holds the mower 7 in the standing posture against the moment in the rear fall direction due to the weight of the machine body acting through the rear body and at the same time holds the body frame 3 in the inclined posture in which the front portion is lifted. Is provided.
The rearward falling prevention stopper 17 is composed of the front end of the receiving plate portion 15. H stands up and rocks the mower 7,
The handle is used when falling down and swinging, and is detachable from the mower 7. As shown in FIG. 4, the crankshaft 4A of the engine 4 and the driven shaft 19 on the transmission 18 side are connected to each other by a cup-shaped drive body 20 on the crankshaft 4A side and a driven shaft 19 on the driven shaft 19 side. A ball joint structure in which the body 21 and the body 22 are interlocked with each other,
An elastic body 23 is provided that elastically presses the driven body 21 toward the crankshaft 4A side in the axial direction to prevent looseness of both. The elastic body 23 is a rubber or disc spring, 24 is a seat cushion,
25 is a retaining ring. In addition, the elastic body 23 is replaced with the driving body 20.
It can also be implemented by arranging it between the inner bottom surface and the end surface of the driven body 21. According to the above configuration, when performing maintenance on the mower 7, the lower surface of the mower 7 can be directed forward by raising and swinging the mower 7 in the upright posture, so that maintenance can be performed with good workability. It can be carried out. Moreover, the mower 7 is attached to the rearward fall prevention stopper 17.
Since the upright posture of the mower 7 and the leaning posture of the vehicle body frame 3 are held by contacting with each other, no special operation is required, the operability is good, and the reliability is high.

It should be noted that although reference numerals are given in the claims for convenience of comparison with the drawings, the present invention is not limited to the structures of the accompanying drawings by the entry.

[Brief description of drawings]

1] Side view

FIG. 2 is a side view of the main part showing the operation.

FIG. 3 is a side view of the main part showing the operation.

FIG. 4 is a cutaway side view of a main part.

[Explanation of symbols]

 3 Body frame 1 Front wheel 7 Mower 8 Link R fulcrum 16 Push up part 17 Rear fall prevention stopper

Claims (1)

[Claims] 1. A mower (7) is arranged in such a state that a rear part of the space below a front frame (1) of a vehicle body frame (3) is allowed to enter, and the mower (7) is linked (8). A lawn mower attached to a vehicle body frame (3) so as to be able to swing up and down via a mower (7) in a direction in which a front end with a ground contact portion at a rear end as a fulcrum (R) is lifted. 7) A push-up portion (16) for pushing up the front portion of the vehicle body frame (3) in accordance with the swing for standing up is provided, and the push-up portion (16) is swung in a standing posture in which it is located rearward of the ground contact portion. By contacting the positioned mower (7), the mower (7) is resisted against the moment in the backward leaning direction caused by the weight of the airframe acting through the push-up portion (16).
Back fall prevention stopper (1
A lawn mower having 7) provided on the vehicle body frame (3).