JPH0622627U - Safety clutch in agricultural work machine - Google Patents

Abstract

(57) [Summary] [Purpose] The object of the present invention is to obtain a safety clutch in an agricultural work machine in which the operating torque is stable and the set torque is easily changed. [Structure] The torque acting on the operating shaft is detected, and the power can be cut by a signal from the controller when the torque exceeds a set torque.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 This proposal relates to a safety clutch in agricultural work machines such as cultivators.

[0002]

[Prior art]

 A mechanical safety clutch is used as the safety clutch in the conventional agricultural work machine.

[0003]

[Problems to be solved by the device]

 The operating torque is not stable with the conventional mechanical safety clutch. Also, it was difficult to change the set torque. Therefore, the purpose of the present invention is to obtain a safety clutch in an agricultural work machine in which the operating torque is stable and the set torque is easily changed.

[0004]

[Means for Solving the Problems]

 In order to achieve the above objectives, this plan provides the following safety clutches for agricultural work machines. That is, it is a safety clutch in an agricultural work machine in which a torque detecting device is provided on a transmission shaft and an actuator for disconnecting a power cut clutch is configured to operate based on a detection signal of a torque set value or more by the torque detecting device.

[0005]

[Action]

 The torque acting on the transmission shaft can be detected, and when the torque exceeds the set torque, the power can be cut off by the signal from the controller.

[0006]

【Example】

 Embodiments shown in the drawings will be described below. Fig. 2 is a side view of the cultivator. The axle (1) of the wheel (1 ') is mounted on the lower part of the mission case M, and the hydraulic transmission (2) mounted on the upper part of the mission case M to the mission case. The power is transmitted to the axle (1) through the gear group of (M), and the engine E is connected to the front of the transmission case (M) through the clutch case (3), and the clutch case (3 ), The main shaft (5) extending through the main clutch (4) transmits the drive shaft (6) above the front part of the transmission case (M) to the hydraulic shaft from the drive shaft (6) through the joint (7). It is configured to transmit power to the transmission device. The rear hitch (8) of the mission case (M) is equipped with a plowing part R having a rotary r, and the PTO shaft (10) driven from the main shaft (5) through the gear interlocking part (9) is hitched. Extend to (8), and install a clutch device A between the drive shaft (11) and the tip of the PTO shaft (10) in the tillage section. Then, the handle (12) is extended from the rear of the handle frame (18) that extends rearward from the upper part of the mission case (M), and the main clutch (4) is operated near the grip (12 '). Install the main clutch lever (14).

The present invention relates to the improvement of the clutch operation A in the above-mentioned cultivator. In FIG. 1, (10) is an input shaft and (11) is an output shaft, both of which are rotatably mounted in the clutch case (15). Reference numeral (16) is a driving body of the power cut clutch A directly connected to the input shaft (10), and (17) is a driven body which can be meshed with the driving shaft and which is interposed between the bearing (19) and the spring ( The driven body (17) is slidably fitted to the output shaft (11) against the shaft (18). The driven body (17) can be moved by the lever (26) engaged with the groove (20) to disengage the clutch. The lever (26) can move the driven body (17) against the force of the spring (18) by the actuator (21). The actuator (21) may be a solenoid as well as a conduction motor. (25) is a slip ring attached to the human power shaft (10), and the set torque is adjusted by the adjustment dial (23) of the controller (22) while observing the torque gauge (24). The controller (22) can judge not only the magnitude of the torque but also the operating time of the torque as a factor to determine the cut.

The torque is set by the controller (22) while watching the torque gauge (24) with the adjustment dial (23) in advance. The power from the input shaft (10) is normally transmitted to the output shaft (11) via the power cut clutch A, but the slip ring (25) does not exceed the torque value set by the controller (22). When torque is detected, this signal is transmitted to the controller (22), the actuator (21) is operated via the controller (22), the clutch A is disengaged by the lever (26), and power is not transmitted to the output shaft (11). . If you want to insert the clutch, you can deactivate the actuator. Although the cultivator has been described in the above embodiments, the present invention can be applied to other agricultural working machines.

[0009]

[Effect of device]

 According to the present invention, since the torque is electrically detected and the power is cut off, the operating torque is stable, and the set torque can be changed by the dial, so that various models can be easily supported. Furthermore, if it is configured with the one shown in the figure, it has a characteristic that it becomes a compact unit type and the layout is easy in terms of design.

[Brief description of drawings]

FIG. 1 is an explanatory view of a safety clutch of the present invention.

FIG. 2 is a side view of the power tiller.

[Explanation of symbols]

 A Power cut clutch 10 Input shaft 11 Output shaft 16 Driving body 17 Driven body 21 Actuator 22 Controller 23 Setting torque adjustment dial 24 Torque gauge 25 Slip ring 26 Lever

Claims (1)

[Scope of utility model registration request] 1. A safety clutch in an agricultural working machine, wherein a torque detecting device is provided on a transmission shaft, and an actuator for disconnecting a power cut clutch is configured to operate based on a detection signal of a torque set value or more by the torque detecting device.