JPS5853882B2 - Nousakugiyoukinioker Kuratsuchinojidou Seigiyosouchi - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a clutch for power transmission and cut-off that is interposed in a power transmission path to a working part of a movable agricultural machine.
The present invention relates to an automatic control device for a clutch in an agricultural working machine that is automatically operated based on the tilting of this agricultural working machine or its working part.

More specifically, for example, when a field is being tilled with a tiller (agricultural machine), when the tiller reaches the edge of the field and is tilted to lift its tiller (working part), the tiller When the tiller is rotated by cutting off power transmission to the tiller, and when the tiller is tilted to return to its original position and the tiller is lowered, the tiller is driven; The time to cut off the power transmission to the tilling section is set close to the ground surface, and the time to start the power transmission to the tilling section is set at approximately the same time as the above-mentioned cutoff time or slightly earlier (at a position far from the ground surface). ).

That is, the present invention provides a method for transmitting power to the working parts of the agricultural machine and interrupting it when appropriate agricultural work is performed using the above-mentioned tiller, other reaping machines, seedling planting machines, spreaders, etc. An automatic control device for a clutch in an agricultural working machine that can be automatically operated based on the tilting of the machine itself or its working part, and can independently and freely set the cutoff timing and start time of power transmission. Specifically, the present invention aims to provide a tilt sensing device which is equipped with an electric operating device for engaging and disengaging the clutch, and has two sensing sections that sense the tilting of the agricultural machine or its working part; a disengagement sensing device having two sensing portions for detecting disengagement of the clutch; and a contact point of each of the sensing portions of the disengagement sensing device is interposed in an operating electric circuit of the operating device, and a clutch disengagement sensor is provided. an electric circuit and an electric circuit for clutch operator operation, and a contact point of one of the two sensing parts in the tilting sensing device that is activated when the agricultural working machine or its working part is tilted forward. , a contact point of the other sensing portion which is activated when the clutch is disengaged and the other sensor is connected to the electric circuit for the clutch human operation when the agricultural working machine or its working part is tilted backward; The present invention is characterized in that the clutch is actuated to disengage, and the clutch is actuated as if to be engaged during tilting backward movement.

Embodiments of the present invention will be described below based on illustrative drawings.

Although this embodiment is not shown, it is described as a device for controlling power transmission to the tilling section of a tiller, and
Therefore, in the figure, A is a driving shaft that is interlocked and connected to the engine mounted on the tiller, and B is a driven shaft that is interlocked and connected to the tilling section of the tiller.

Therefore, a clutch 1 for power transmission and disconnection is interposed between the power transmission path from the engine to the tilling section of the tiller, that is, between the drive side shaft A and the driven side shaft B, and the clutch 1 is engaged. An electric operating device 2 is provided, and a tilting sensing device 3 having two sensing portions for sensing the tilting of the tiller body, and a turning sensing device 4 having two sensing portions for sensing the turning of the clutch 1. The actuating electric circuit 5 of the actuating device 2 is provided with each of the sensing portions in the cut sensing device 4, that is, SW3. Each contact of SW4 5W3-1.5W2-
2,5W4-1. SW, -2 are interposed to form an electric circuit 5a for clutch disengagement operation and an electric circuit 5b for clutch driver operation, while the two sensing parts in the tilt sensing device 3, ie, switches SW1. Each contact of SW2 5W1-1
, SW.

= 2,5W2-1.5W2-2, one of the sensing parts that operates when the agricultural machine or its working part moves forward on an incline, that is, the contacts of 5W1-1, 5W1-2, is connected to the electricity for the clutch disengagement operation. The circuit 5a is connected to the clutch operator electric circuit 5b, and the contacts of the other sensing section, ie, 5W3-1 and 5W3-2, which are activated during tilt return movement, are respectively interposed in the clutch operator operation electric circuit 5b. The clutch 1 is disengaged during forward movement of the slope, and the clutch 1 is engaged during the return movement of the slope.

The operating electric circuit 5 and the tilt sensing device 3 of the operating device 2 are incorporated into a box as appropriate, and the box is set at an appropriate position in the body of the tiller. It is installed near the clutch 1 and is connected and wired to the operating electric circuit 5 in the box. 6 Thus, the operating device 2 uses a motor M as schematically shown. The rotation from the motor M is converted into linear motion, and is interlocked and connected to the shift lever 11 of the clutch 1 via a link mechanism as appropriate, and when the motor M rotates forward, the shift lever 11 is pushed and operated to move the clutch 1. The clutch 1 is turned on (transmission of motion) by pulling the shift lever 11 during reverse rotation.

In addition to using a motor capable of forward and reverse rotation as described above, this operating device 2 may be configured to directly operate the shift lever 11 using, for example, an electromagnet, or may be configured to directly operate the shift lever 11 using two electromagnetic clutches or the like. It is also possible to configure the shift lever 11 to operate using power from a mounted engine.

The tilt sensing device 3 detects the tilt of the machine body based on the rocking motion of the power tiller, and includes a weight W suspended by a string 31 or the like, and two switches SW1. SW2, and both switches SW7. SW2 is of an automatic return type, and the weight W is connected to the switch SW1 or SW2.
When the contact 5W1 is separated from the state where it is in contact with the
1 t S Wt 2 or 5W2-1.5W2-2
can be switched.

Incidentally, this tilt sensing device 3 may have a structure other than the above-mentioned structure, for example, as shown in FIG.
A ■-shaped groove 33 is formed in the inner bottom wall, and the heights of the bottom wall portions on both sides of this groove 33 are adjusted appropriately.
3, and switches SW1 and SW2 may be fixedly installed on the inner wall of the box body 32 on both sides of the steel ball 34, or in a sealed container (not shown). In addition to filling the liquid, it is also possible to provide two switches at predetermined positions above the liquid level, and to operate each switch by swinging the liquid level as the aircraft tilts, and in this case, the liquid used is By using mercury, the mechanism can be simplified.

Further, the disengagement sensing device 4 detects the disengagement of the clutch 1, and is constructed using the shift lever 11 of the clutch 1, that is, a rod-shaped portion of the shift lever 11 and a rod-shaped portion on both sides of the rod-shaped portion. Two switches SW3, SW
4, and each switch SW3, S
Each W4 is of a snap type, and when the clutch 1 is in the disengaged position, one switch SW2 is operated using the rod-shaped portion of the shift lever 11, and each contact 5W31 is operated.
, SW-2, 5W4-1, 5W4-2 are switched to one side, and when the clutch 1 is in the on position, the other switch SW2 is operated using the rod-shaped portion of the shift lever 11, and each contact 5W3-1 , 5W3-2.

5W4-1.5W4-2 is switched to the other.

In addition to being configured to directly sense the engagement operation of the clutch 1 as described above, the engagement detection device 4 may be configured to indirectly sense the engagement operation of the clutch 1 from the movement of the operating device 2, for example. It's also good.

In addition, the switches sw3 and SW4 are the sixth switch except for two switches.
As shown in the figure, a single snap switch SW5 may be used, in which case the shift lever 11 is formed into a bifurcated shape, or an automatic return type switch SW6 may be used as shown in Fig. 7. In this case, a cam 12 is provided.

The apparatus of the present invention is constructed as described above, and a case will be described in which the tiller is currently running to till the inside of the field, and then the tiller reaches the edge of the field and changes direction.

In this case, the clutch 1 is in the engaged position, the driven side shaft B is interlocked with the driving side @A, and power transmission to the tilling section of the tiller continues, and the operating electric circuit 5 of the operating device 2 is connected. All are developed.

From this state, the tiller is tilted to lift the tiller, but when the tiller leaves the ground surface during this lifting, the weight W in the tilt sensing device 3 separates from one switch SW1. Contact SW1
-1.5W1-2 is switched from the position in Figure 1 to the position in Figure 2, ■ terminal to contact SW, -2 motor M, contact SW
, -1°SW, -2,5W3-1, the circuit to the e terminal, that is, the electric circuit 5a for latch disconnection operation is closed, this motor M rotates forward, and the shift lever of the clutch 1 is closed.
11 is pressed and operated to switch the clutch 1 to the off position and cut off power transmission to the tilling section, and by switching the clutch 1 to the off position, the switch SW4 in the cut-off sensing device 4 switches the shift lever to the off position. Each contact 5W3-1.5W3-2, SW4 is operated using 11 rod-shaped parts.
~1°5W4-2 is switched from the position shown in FIG. 2 to the position shown in FIG. 3, the closed circuit is opened again, and the rotation of the motor M is stopped.

When the tiller further tilts and the tiller is lifted up to a predetermined height, the tiller is rotated to change direction.

It should be noted that while the tiller is in the process of tilting forward, the weight W is in contact with the other switch SW2 and is on standby, and at this time the contact 5W2-1 of the switch SW2 is in contact with the other switch SW2.
．． 5W2-2 is the contact 5W3-1, 5W3-2.5W
4-1.5W4-2 is switched from the position shown in Figure 2 to the position shown in Figure 3 prior to switching, but this switching has no relation to the closed circuit, and the motor M is The rotation continues.

In this way, once the direction change of the tiller is completed, the tiller is tilted again to lower the tiller, but during this descent, the tiller touches the ground surface or before that (upper position). , the weight W is separated from the other switch SW2, and thereby the contact 5W2-1.5
W2-2 is switched from the position shown in Figure 3 to the position shown in Figure 4, and ■
From the terminal to the contact 5W3-2. Motor M1 contact 5W2-1
, 5W32.5W4-1. ○A circuit to the terminal, that is, the electric circuit 5b for clutch manual operation (circuit X, which is opposite to the circuit closed at the time of forward tilt movement) is closed, this motor M rotates in the reverse direction, and the shift lever of the clutch 1 is closed. -11 is pulled to switch the clutch 1 to the on position, and power transmission to the tilling section is restarted.
By switching to the on position, the switch SW3 in the on-off sensing device 4 is operated using the rod-shaped portion of the shift lever 11, and the respective contacts 5W3-1, 5W3-2, 5W4-
1, 5W42 is switched from the position shown in FIG. 4 to the original position shown in FIG. As a result, power transmission to the tilling section is maintained.

It should be noted that during the backward movement of the tiller, the weight W is in contact with the switch SW1 and is waiting, and at this time, the contact SW, -1°5W1-2 of the switch SW is connected to the contact point SW1-2 of the switch SW1. 5W3-1, 5W3-2.

5W4-1, SW, -2 are switched from the position shown in FIG. 4 to the position shown in FIG. 1, but this switching has no relation to the closed reverse circuit;
The reverse rotation of the motor M continues.

As explained above, when changing the direction of the tiller, by stopping the driving of the tilling section as soon as the tilling section leaves the ground surface, the direction of the tiller can be changed extremely safely, and by stopping the drive. The timing can be set arbitrarily and it can be done extremely accurately, for example, there is no fear that the drive will stop when the plowing section is far from the ground surface (which is undesirable for safety reasons). .

In addition, when the tilling section is lowered, the power transmission to the tilling section can be started when the tilling section contacts the ground surface or earlier. For example, when the tilling section is lowered, the power transmission to the tilling section can start There is no fear that the tiller will start (damage to the tilling claws or power transmission mechanism) as soon as it goes into the ground.

In addition, in the present invention, a manual push button switch is interposed in the connection wiring to the terminal (1) of the operating electric circuit 5 of the electric operating device 2, and the push button switch is placed near the operator's position of the agricultural machine (tiller). The operating circuit 5 is constructed so that it does not operate unless the push button switch is pressed to ensure even more safety. It is also possible to configure the system so that the power transmission to is not started.

As explained above, according to the present invention, when a movable agricultural machine is running in a field to perform appropriate agricultural work such as plowing, when the agricultural machine is tilted to change direction, etc. It is possible to automatically cut off and start power transmission to the working part by switching on and off a clutch installed in the power transmission path to the working part,
Moreover, it has now become possible to arbitrarily and independently control the timing of shutting off and starting the power transmission.

[Brief explanation of the drawing]

The drawings illustrate embodiments of the present invention, and FIGS. 1 to 4 are wiring diagrams showing the operating order, FIG. 5 is a cross-sectional view of essential parts showing different implementation structures of the tilt sensing device, and FIGS. 6.7. 2 is a schematic diagram showing different implementation structures of the incision sensing device; FIG. 1...Clutch, 2...Electric operating device, 3...Tilt sensing device (having two sensing parts), SW. SW2...Switch (sensing part), 4...
・Incision detection device (with two sensing parts), SW3, S
W4...Switch (sensing part), 5...
Electric circuit for operation, 5a... Electric circuit for clutch disengage operation, 5b... Electric circuit for clutch manual operation.

Claims (1)

[Claims] 1. A clutch for power transmission and disconnection is interposed in the power transmission path to the working part of a movable agricultural working machine, and an electric operating device is provided to perform the engagement operation of the clutch,
and a tilting sensing device having two sensing portions for sensing the tilting of the agricultural machine or its working part, and a turning sensing device having two sensing portions for sensing the turning on of the clutch,
Contact points of each of the sensing portions of the on-off sensing device are interposed in the actuation electric circuit of the actuation device to form an electric circuit for clutch disengagement operation and an electric circuit for clutch human operation, and the tilting sensing device Of the two sensing sections in the above, the contact of one of the sensing sections, which is activated when the agricultural working machine or its working part is tilted forward, is connected to the electric circuit for clutch operator operation, and the contact of the other sensing section is activated when the agricultural working machine or its working part is tilted backward. Contact points of the parts are respectively interposed in the electric circuit for operating the clutch, so that the clutch is disengaged when the agricultural machine or its working part is tilted forward, and the clutch is engaged when the farm working machine or its working part is tilted backward. An automatic clutch control device for an agricultural machine, characterized in that: