JPH0923701A - Automatic safety stop device for management machine - Google Patents

Abstract

(57) [Summary] [Purpose] The machine can be automatically and effectively stopped when the management machine backs and the tip of the handle grip hits a rear wall or the like and an operator caught in between. [Structure] A main clutch lever 3 is mounted on a handle rod 2 near the grip 1, and the main clutch lever 3 is mounted.
In a management machine constituted by connecting a main clutch operating wire 5 of a pulling hand to the main clutch lever 3 interlockingly with a clutch-off side extending from a wire receiver 4 provided further forward, the management machine becomes the grip 1 side and A rear portion 2a of the handle rod that pivotally supports the main clutch lever 3 is foldably connected to a front portion 2b of the handle rod equipped with the wire receiver 4 so that the grip 1 is folded when an external force of a predetermined value or more is applied. When the rear portion 2a of the handle rod is bent, the main clutch operating wire 5 is loosened and the clutch is automatically turned off.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic safety stop device for a management machine capable of automatically stopping a machine body.

[0002]

2. Description of the Related Art Conventionally, a main clutch lever is mounted on a handle rod in the vicinity of a grip, and a main clutch operating wire is provided on the clutch off side extending from a wire receiver provided in front of the main clutch lever. In the management machine configured to interlock with the main clutch lever,
When stopping the aircraft, the main clutch lever had to be operated to the clutch-off side.

[0003]

However, for example, when the machine body is in the back state, the tip of the handle grip hits a rear wall or the like, or an operator is caught between the machine body and the rear wall or the like. In that case, there was a problem that the lever could not be instantaneously operated to turn off the clutch.

[0004]

SUMMARY OF THE INVENTION The present invention solves such a problem, and automatically makes the machine body effective when the grip portion hits an operator who is caught in the rear wall or the machine body and the rear wall. Therefore, the main clutch lever is mounted on the handle rod near the grip, and
In a management machine constituted by interlockingly connecting a main clutch operation wire of a pulling hand to the main clutch lever on a clutch-off side extending from a wire receiver provided in front of the main clutch lever, the management machine is configured to be a side of the grip. The rear portion of the handle rod that pivotally supports the main clutch lever is foldably connected to the front portion of the handle rod equipped with the wire receiver so that the grip portion will bend when an external force of a predetermined value or more is applied. When is bent, the main clutch operation wire is loosened and the clutch is automatically operated to be off.

[0005]

[Action] Therefore, if the handle grip portion hits a rear wall or the like, or an operator is caught between the handle grip and the rear wall or the like, the rear portion of the handle rod on the handle grip side is bent. Therefore, the wire connecting part of the main clutch lever, which is axially mounted on the rear part of the handle rod, also approaches the wire receiving side, and the pulling main clutch operating wire is loosened to the clutch off side. The main clutch will be turned off and the aircraft will stop safely.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a side view of a management machine with a part omitted, in which both handle rods 2 are extended above the rear side of a machine equipped with both wheels 6 and an engine E. A rotary working machine 7 is connected to the rear part of the machine body, and a belt transmission part is provided inside a belt cover 9 which is installed from the lateral side of the engine E to the lateral side of the mission case 8. From the power transmission part to the wire receiver 4 provided on one of the handle rods 2, the main clutch operation wire 5 of the pulling hand is extended to the clutch off side.

As shown in FIGS. 1 to 3, the one handle rod 2 provided with the wire receiver 4 has a main clutch lever 3 via a fulcrum shaft 16 at a portion near the rear end of the grip 1.
Is divided into a handle rod rear portion 2a which is mounted on the shaft and a front handle rod front portion 2b which is separated from the grip 1 in front of the grip 1 and has the wire receiver 4 provided at the lower portion thereof, but they are abutted against each other. As shown in FIG. 3, the front end surface 10a of the handle rod rear portion 2a and the rear end surface 10b of the handle rod front portion 2b are formed in an inclined surface which is oblique in a side view, and the rear end surface 10b of the handle rod front portion 2b is formed. Support piece 1 protruding from the bottom
1, a lower portion of the front side of the handle rod rear portion 2a is pivotally supported via a fulcrum shaft 12, and is engaged on both sides of the front portion of the handle rod rear portion 2a and the rear portion of the handle rod front portion 2b. Stop pins 13 and 14 are provided so as to project, and both ends of the tension spring 15 are connected to the locking pins 13 and 1.
4 is engaged with each other and extends from the wire receiver 4, and the tip of the main clutch operating wire 5 is connected to the lower end of the main clutch lever 3.

Therefore, normally, as shown in FIGS. 1 to 3, the tension spring 15 crosses the upper side of the fulcrum shaft 12 to the upper side, and the front end face 10 of the rear portion 2a of the handle rod 2 is fulcrumed.
a and the rear end face 10b of the handle rod front portion 2b collide with each other to operate the steering wheel, and when the main clutch lever 3 is operated as shown by the solid line in FIG. The clutch can be operated by pulling it toward the grip 1.

When the tip of the handle grip 1 hits the rear wall A or the like or the operator is caught between the handle grip 1 and the wall A while the machine body is backing in the direction of arrow A, the handle The rod rear portion 2a rotates in the direction of the arrow B around the fulcrum shaft 12 and the tension spring 15 crosses the fulcrum above the fulcrum shaft 12 to the lower side, resulting in bending as shown in FIG. Therefore, the lower end side wire connecting portion of the main clutch lever 3 axially mounted on the handle rod rear portion 2a in the clutch-on state also approaches the wire receiving 4 side, and the clutch off side pulls the main clutch operation freely. The wire 5 will be loosened, the main clutch will be turned off, and the aircraft will stop safely.

Incidentally, the bent handle rod rear portion 2a
To return to the original position, operate the main clutch lever 3 to the clutch-off side to loosen the main clutch operating wire 5 and hold the grip 1 until the tension spring 15 crosses above the fulcrum shaft 12 as a fulcrum. By lifting the handle rod rear portion 2a, the handle rod rear portion 2a can be returned to its original position.

[0011]

As described above, according to the present invention, when the handle grip 1 portion hits a rear wall or the like, or when an operator is caught between the handle grip 1 and the rear wall or the like, the handle grip 1 side is provided. The rear part 2a of the handle rod is bent, and the rear part 2a of the handle rod 2a is bent there.
The wire connecting portion of the main clutch lever 3 which is axially mounted on the side also comes close to the wire receiver 4 side, so that the main clutch operating wire 5 of the pulling hand is loosened to the clutch off side and the main clutch is turned off. Therefore, the aircraft can be stopped automatically and safely, and it has a feature that it can be suitably implemented.

[Brief description of drawings]

FIG. 1 is a side view schematically showing a management machine according to an embodiment of the present invention.

FIG. 2 is an enlarged side view of a part of FIG. 1;

FIG. 3 is an enlarged side view showing a part of FIG. 2;

FIG. 4 is an operation explanatory view showing an operation state of FIG. 2;

[Explanation of symbols]

 1 Grip 2 Handle rod 2a Rear part of handle rod 2b Front part of handle rod 3 Main clutch lever 4 Wire holder 5 Main clutch operating wire

Claims (1)

[Claims] 1. A main clutch which has a main clutch lever 3 mounted on a handle rod 2 near the grip 1 and which extends from a wire receiver 4 provided in front of the main clutch lever 3 and which is a pull-off main clutch. In a management machine configured to interlock an operation wire 5 with the main clutch lever 3, a handle rod rear portion 2a, which is on the grip 1 side and pivotally supports the main clutch lever 3, is equipped with the wire receiver 4. The front portion 2b of the handle rod is foldably connected so as to be folded when an external force exceeding a predetermined value is applied to the grip portion 1, and when the rear portion 2a of the handle rod is bent, the main clutch operating wire 5 is loosened and the clutch An automatic safety stop device characterized in that it is configured to be automatically turned off.