JPS58209628A - Emergency stopping device for self-running machine - Google Patents

Abstract

PURPOSE:To facilitate a change-over between forward running and rearward running and to enable an emergency stop of self-running machine by a method wherein throttle adjusting means of 2 systems for forward and rearward running are arranged independently to each other and each of the throttle adjusting means is selectively operated in linkage with the change-over operation of a transmission device. CONSTITUTION:One end of a forward running wire 5 and one end of a rearward running wire 6 are connected to a throttle lever 4 arranged at the side of an engine 3, and the other ends of the wires are connected to the lever type and grip type throttle operating means 25 and 27 respectively. The intermediate part of each of the wire 5 and 6 is supported by each one of a pair of fixing plates 11 and 12 which are spaced apart at a desired distance, then an elliptical guide means 13 forming the change-over device 10 is rotatably arranged between the fixing plates 11 and 12. One end of the connecting rod 15 is pivotally set to the projecting side 13a of the guide means 13 and the other end is connected to a control plate 16 of the transmission lever 2. With this arrangement, when the transmission lever 2 is changed over to rearward running, for example, the forward running wire 5 is kept loosened. Returning means such as a spring etc. is attached to said operating means 27.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an emergency stop device for a self-propelled machine used for agricultural work as a tiller, a management machine, etc.

When a walk-behind tiller, etc. is traveling backwards (in order to stop traveling, the throttle lever must be completely returned to the stop position, the main clutch must be disengaged, or the gear shift lever must be returned to the neutral position). In all of these conventional stop operations, it is necessary to release the -L1.hair from the handle of the aircraft and grasp the designated operating lever.
It was difficult to make an emergency stop and was extremely dangerous.

The present invention provides an emergency stop device that can quickly stop a vehicle with a simple operation when an emergency stop is required, and this will be explained below.

The emergency stop device according to this invention has two types, one for forward movement and one for reverse movement.
The throttle adjustment means for the system are provided independently from each other, and the transmission is switched (thus, one of the throttle adjustment means can be selectively applied). It is characterized by the provision of return means that automatically returns the engine to the engine stop side when the engine is released.

Fig. 1 is a side view of a power cultivator according to the present invention, and Fig. 2 is an enlarged view of the main parts.A gear shift lever (change lever) 2 is provided protruding from the space between a pair of left and right handles I. ing. Two wires 5 and 6 are fixed to the throttle lever 4 provided on the side of the engine 3, and by pulling these wires, the throttle lever 4 is rotated in the direction of arrow A, which is the fully opening direction. It is now possible to do so. The throttle lever 4 is provided with a return spring 7 that is biased in a direction (opposite to arrow A) to return the throttle lever 4 to the stop side, and the wire 5,
When the throttle lever 6 becomes loose, the throttle lever 4, which is rotated to the opening side, is quickly rotated to the stop position. The above wire is attached to the side of the engine 3.
A fixing plate 8 for fixing is attached. A switching device 10 is disposed above the transmission 9. Switching device IO
As shown in FIG. 3, the outer cylinder 5' of the wires 5 and 6,
6', and a cam-shaped guide 1 provided in the space between the two opening plates 11.12.
It has 3. The guide 13 is rotatably supported by a support shaft 14 provided at an eccentric position.
is rotated in the direction of arrow B. Also, guide tool 1
3 is disposed between the passages of the wires 5 and 6, and a groove 13b into which the wires 5 and 6 fit is provided on its outer periphery. The opposite end of the connecting rod 15 is pinned (Q) to the control plate 16, and the intermediate portion passes through a hole 18 in the fulcrum plate 17. As shown in FIG. 4, the control plate 16 is slidably supported by a shaft 20 on the back side of a shift position display plate 19 provided at the base of the shift lever 2, and is used to move the shift lever 2 to the reverse side. When moved, it can be moved in the direction of arrow C. When the gear shift lever 2 is returned to the neutral position or moved to the forward position, the coil spring 21 returns it to the illustrated position. When the gear shift lever 2 is not in the reverse position, the connecting rod 15 connected to the control plate 16 rotates the guide 13 to the position shown by the solid line in FIG. However, when the shift lever 2 is in the reverse position, the guide tool 13 is rotated to the position shown by the chain line in FIG. It's starting to make you nervous. When one of the two wires 5.6 is tensioned, the other wire is kept loose. The rear end of the forward movement wire 5 is connected to a lever-set throttle operating tool 25 shown in FIG. is designed to rotate toward the opening side (in the direction of the arrow). The rear end of the reversing wire 60 is connected to a grip-type throttle operating tool 27 shown in FIG. When rotated, the throttle lever 4 of the engine 3 can be rotated to the opening side (in the direction of the arrow) via the switching device 10. When the grip 28 is loosened, the grip 28 is reversely rotated to the engine stop position by the action of a return spring (torque spring) 29, thereby stopping the engine. Note that the wires 5 and 6 are kept in a loose state unless they are tensioned by the protrusion 13a of the guide 13 provided on the switching device 10, and in this state the wires 5 and 6 are kept loose by the throttle adjustment means on the hand side. The throttle lever 4 of the engine 3 cannot be rotated even if a certain lever-type throttle operating tool 25 or grip-type throttle operating tool 27 is operated. The switching device for selectively operating both throttle operating tools 25, 27 is not limited to the illustrated example, and other suitable switching devices may be employed.

The rotational power of the engine 3 is transmitted to the running wheels 30 and the rotary tiller shaft 31 via a transmission 9 which is switched by the transmission lever 2 . In the figure, 32 is a chain case, and 33 is a tail wheel.

When moving the illustrated example of a self-propelled power cultivator forward, the speed change lever 2 is placed in the forward direction, and the lever set slot/nottle operating tool 25 is operated. At this time, since the forward movement wire 5 is tensioned, the throttle lever 4 of the engine can be remotely controlled by the lever-set throttle operating tool 25. Also, when moving the tiller backwards, shift lever 2.
is in the reverse position, and the grip type throttle operating tool 2
Operate 7. At this time, the reverse wire 6 is tensioned, so that the grip type throttle operating tool 27 can be used to operate the engine throttle lever 4JJ. If you fall while going backwards and need to make an emergency stop, you can simply release your hand from the grip 28. As a result, the grip 28 is automatically reversed to the stop position, and the throttle valve 4 of the engine is immediately returned to the stop position by the action of the return spring 7.

In the present invention, forward and reverse throttle operating tools are provided independently and separately, and both are configured to be selectively operated by changing the position of the gear shift lever. The throttle control tool for reversing is configured so that when you release your hand, it automatically returns to the stop position and stops the engine, making it convenient to use forward and reverse, and especially when reversing. Emergency stops can now be performed extremely easily and quickly, making them highly safe.

[Brief explanation of drawings]

FIG. 1 is a side view of a tiller to which the present invention is applied, and each of the figures from FIG. 2 to FIG. 6 is an enlarged view of the main parts. All figures illustrate examples. ■-Handle, 2 Gear lever, 3 ・Engine, 4
Throttle lever, 5, 6-wire, 9 transmission, 10 switching device, 11.12 fixed plate, 13...
Guide tool, 14... Support shaft, 15... Connecting rod, 16 Control board, 25 Lever set throttle operating tool, 27 Grip type throttle operating tool, 28 Grip type throttle operating tool. Patent applicant: Iseki Agricultural Machinery Co., Ltd. Agent: Hiroshi Sugawara, patent attorney

Claims (1)

[Claims] (]) Two systems of throttle adjustment means for MiJ forward and reverse are provided independently of each other, and either throttle adjustment means is selectively activated by switching the transmission, and the throttle adjustment for reverse is also controlled. An emergency stop device for a self-propelled aircraft, characterized in that the return stage is provided with a return L stage that automatically returns to the engine stop side when the operator releases his hand from the steering wheel.