JPH0994001A - Device for automatically stopping rotary working machine of administration machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To automatically and safely enable the effective stop of a rotary working machine by lifting a handle when turning an administration machine during the practice of tillage operations in a field. SOLUTION: This device for automatically stopping a rotary working machine of an administration machine comprises a handle arranged extendedly from an upper part of a transmission case 2 axially installing both wheels to the rear of a machine body and the rotary working machine connected to the rear of the machine body. In this case, a clutch unit 6 capable of connecting and disconnecting the power transmission to a transmission shaft 4 and performing changeover operations with a fork 5 is transmitted and connected to the transmission shaft 4 of the rotary working machine and a weight 8 rotatable in the front and rear directions of the machine body with a fulcral shaft 7 as the center is arranged in the upper part of the machine body. Furthermore, the side of the weight 8 is interlocked and coupled to the side of the fork 5 so as to enable the movement of the clutch unit 6 to the neutral position of the disconnected transmission by rotating the weight 8 to the front side of the machine body when the handle is lifted.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotary working machine automatic stop device for a management machine capable of automatically turning a tilling clutch.

[0002]

2. Description of the Related Art Conventionally, in a management machine having a handle extending from the upper part of a mission case having both wheels mounted on the rear side of a machine body, and a rotary working machine connected to the rear side of the machine body, a field machine is used during work. When turning the aircraft on the side of the headland, the tilling clutch is left on or the tilling clutch is turned off and the handle is lifted while turning.

[0003]

However, if the tilling clutch is still engaged, the operator or assistant may approach the rotary because of the lifting of the handle and may be injured, and the mud may be covered. In addition, even when the tilling clutch is operated with the clutch turned off, the operation of lifting the handle has to be performed, which makes the operation troublesome and troublesome, and the operation is difficult.

[0004]

SUMMARY OF THE INVENTION The present invention solves such a problem and makes it possible to automatically and effectively stop the rotary working machine when the handle is lifted. Therefore, both wheels are mounted on the shaft. In a management machine in which a handle is extended from the upper part of the mission case to the rear of the machine and a rotary working machine is connected to the rear of the machine, the transmission shaft of the rotary working machine is disconnected from the transmission shaft. A clutch body that can be brought into contact with and can be switched by a hawk is transmission-coupled, and a weight that can rotate in the front-rear direction of the machine is provided around the fulcrum shaft at the upper part of the machine, and when the handle is lifted, the weight is changed. The weight side and the hawk side are interlockingly connected so that the clutch body can be moved to the neutral position of the transmission disconnection by rotating to the front side of the machine body. It is.

[0005]

[Action] Therefore, when the clutch body is operated by the hawk and the plowing work is performed, when the aircraft is turned on the headland side, if the handle is lifted in the conventional manner, the aircraft leans forward. As a result, the weight will rotate forward of the machine body around the fulcrum axis, and by this rotation, it is possible to move the clutch body to the neutral position of transmission disconnection while interlocking the forks. The rotary working machine can be stopped safely.

[0006]

1 to 6 show an embodiment of the present invention, in which a management machine A has a front frame 9 installed on a front portion of a mission case 2 on which both wheels 1 and 1 are mounted on both lower sides. The engine E is mounted above the engine E, and a belt cover 14 is attached to the belt 13 that is hung on the engine pulley 10 of the engine E and the pulley 12 of the input shaft 11 above the transmission case 2. A gear group 15 is provided between the axles 1a.
A sprocket chain 16 is interposed, and both handles 3 are extended from the rear end of a handle frame 3a which extends from the upper portion of the mission case 2 to the rear of the machine.

The rotary working machine B connected to the rear side of the management machine A extends from the upper side of the mission case 2 to the lower rear side of the machine body and is provided at the lower end of the transmission case 4a in which the transmission shaft 4 is housed. A gear case 18 having a rotary 17 on both sides is connected, a rotary cover 19 is attached to the upper side of each rotary 17, and a gauge wheel 20 and a rear cover 21 are provided on the rear side.

An intermediate transmission shaft 22 is mounted on the rear side of the input shaft 11 in the upper portion of the transmission case 2, and two stages of gears are transmitted from the input shaft 11 to the lateral sides of the intermediate transmission shaft 22. The gear 23 is fitted and fixed, and on the other side of the intermediate transmission shaft 22, both bevel gears 24 and 25 having engaging claws 24a and 25a on the inner side are loosely fitted, respectively, and between the both bevel gears 24 and 25. Engaging claws 6a and 6b are provided on both sides of the clutch body 6 that is spline-fitted to the intermediate transmission shaft 22,
A bevel gear 26 that constantly meshes with both bevel gears 24 and 25 is fitted and fixed to the tip end portion of the transmission shaft 4, and
The hawk shaft 27 is mounted on the upper part of the mission case 2 so as to be operated from the outside, and the upper part of the hawk 5 that engages with the clutch body 6 is fixed to the hawk shaft 27.

An engaging pin 28 is provided so as to project rearward from a portion of the hawk shaft 27 for fixing the hawk 5, and symmetrical leftward and rightward inclined lines 29a and 29b are provided downward as shown in FIG. The engaging pin 28 is inserted into the inside of the operation ring 29 having an isosceles triangle shape, and the operation ring 29 is
Guide pins 30 protruding from the center and bottom of the
a and 30b are provided at the rear of the guide groove 3 in the vertical direction.
1 are slidably fitted into the upper guide pins 30
A wire 33 connected to the spring rod 32 that is connected to a and extends upward is fitted into a wire receiver 34 provided above the wire rod 34, and a wire 33 is attached to a support frame plate 35 provided on the lower surface of the inclined handle frame 3a. Is attached with the weight 8 which is rotatable around the fulcrum shaft 7 in the front-back direction of the machine body in a hanging state.
The tip of the arm 33 that extends above the fulcrum shaft 7 and can rotate together with the weight 8 is connected to the tip of the wire 33 that extends from the wire receiver 37 provided on the support frame plate 35.

Therefore, when the hawk shaft 27 is moved in the axial direction and the hawk 5 engages the clutch body 6 with the bevel gear 24 as shown in FIG. 5, the rotary 17 is reversed and the bevel gear 25 is engaged. When combined, the rotary 17 can be rotated in the forward direction, and the tilling clutch can be operated as in the conventional case.
As shown in FIG. 7, the engaging pin 28 moves laterally to push down the operation ring 29 while sliding on the inclined edge 29a. Further, when the bevel gear 25 is engaged with the clutch body 6, the engaging pin 28 1 pushes the operation ring 29 while sliding on the inclined edge 29b.
In the posture during the plowing work as shown in (4), the weight 8 is in a suspended state and the wire 33 is in a loosened state.

At the time of work, when turning the body on the headland side,
As is customary, when the handle 3 is lifted as shown in phantom in FIG. 1, the aircraft leans forward and the weight 8
Will rotate about the fulcrum shaft 7 toward the front of the machine as indicated by the arrow a.
Will be pulled toward the arm 36 in the direction of arrow B,
The operation ring 29 is moved upward, and the upward movement causes the engagement pin 28 to slide along the inclined edge 29a and move in the axial direction of the hawk shaft 27 together with the hawk shaft 27 and the hawk 5. As shown in FIGS. 3 and 4, the clutch body 6 is moved to the neutral position where the transmission is discontinued, so that the tilling clutch is automatically disengaged and the rotary working machine can be stopped safely.

When the handle 3 is lowered after the machine has been rotated, the hawk shaft 27 can be operated to engage the tillage clutch to continue the tillage work.

Even if the clutch body 6 is a gear which can be operated by the fork 5 as described above so that the tilling clutch can be engaged and disengaged, the clutch body 6 can be constructed in the same manner as in the above embodiment.

FIG. 7 shows another example, which has substantially the same structure as that of the above-described embodiment as indicated by the same reference numeral, but on one end side of a bell crank 39 pivotally supported on the fulcrum shaft 38 and on the outer circumference of the belt 13. A tension pulley 40 that abuts is mounted on a shaft, a weight 41 is connected to the other end of the bell crank 39, and a clutch wire 42 having a spring rod connected to an arm portion on one end of the bell crank 39 is connected to a wire receiver 43. The clutch wire 42 is interlocked with the main clutch lever 44 provided on the handle 3 and the handle 3 is lifted as shown by an imaginary line with the main clutch engaged. When the tension pulley 40 is tilted, the machine body leans forward and the tension pulley 40 pivots downward together with the weight 41 in the direction of arrow B. 0 it is possible to safely stop the aircraft while operating to automatically turn off the main clutch supposed to be away from the belt 13.

[0015]

As described above, according to the present invention, when the clutch body 6 is operated by the fork to be engaged with the clutch by the hawk 5, the handle 3 is operated as usual when the aircraft is previously operated on the headland side. When lifted, the machine body leans forward and the weight 8 rotates about the fulcrum shaft 7 toward the front side of the machine body. The rotation causes the fork 5 to be interlocked and the clutch body 6 to be neutrally disconnected. Since it can be moved to the position, the rotary working machine can be stopped automatically and safely. Further, unlike the conventional case, the troublesome operation of disengaging the tilling clutch and lifting the handle becomes unnecessary.

[Brief description of drawings]

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

FIG. 2 is a side view showing an essential part of the embodiment of the present invention.

FIG. 3 is a sectional view showing a part of FIG. 2;

FIG. 4 is an enlarged side view showing a part of FIG. 2;

5 is an operation explanatory view shown in a part of FIG. 3. FIG.

FIG. 6 is a side view showing a part of FIG.

FIG. 7 is a side view showing another example of a management machine.

[Explanation of symbols]

 1 Wheel 2 Mission Case 3 Handle B Rotary Working Machine 4 Transmission Shaft 5 Hawk 6 Clutch Body 7 Support Shaft 8 Weight

Claims (1)

[Claims] 1. A management machine comprising a handle 3 extending from an upper portion of a mission case 2 in which both wheels 1, 1 are mounted on the rear side of the machine body, and a rotary working machine B connected to the rear side of the machine body. To the transmission shaft 4 of the rotary work machine B, a clutch body 6 which can disconnect and connect the transmission to the transmission shaft 4 and can be switched by a fork 5 is transmission-coupled, and a fulcrum shaft 7 center is provided at the upper portion of the machine body. A weight 8 that can be rotated in the front-rear direction of the machine body is provided in the machine body, and when the handle 3 is lifted, the weight 8 rotates to the front side of the machine body and the clutch body 6 can be moved to the neutral position of the transmission interruption. The rotary working machine automatic stop device is characterized in that the weight 8 side and the hawk 5 side are linked and linked together.