JPH0822182B2 - Combine clutch operation structure - Google Patents

Description

Description: [Industrial application] The present invention relates to a cutting pretreatment device that cuts planted stem culms and conveys the cut culm toward a threshing device, and a cut and convey stalk from now on. With a threshing device for handling and processing culms, a threshing clutch for connecting and disconnecting power to these devices,
The present invention relates to a combine clutch operation structure including a harvesting clutch.

[Conventional technology]

As each of the clutches for cutting and threshing in the above combine, as in the conventional one disclosed in Japanese Utility Model Publication No. 51-3542, each operation member of both clutches is operated at the base end portion of one manual operation lever. The first and second cams, which can set the operation amount and the operation order of the members, are interlockingly connected to each other, and by the displacement of the manual operation lever, both of the clutches are in a disengaged work stop state and the shelling clutch is engaged. There has been a configuration in which the reaping clutch is capable of showing the respective states of a disengagement work state and a work state in which both of the clutches are engaged.

[Problems to be Solved by the Invention]

A belt tension clutch is generally used as the harvesting clutch and the threshing clutch, but since the operating force is relatively large, the operating force is reduced by using a clutch lever with a large lever ratio. There is. Therefore, in the related art, the operation stroke of the clutch lever is considerably large, and the ratio of the lever operation space in the control portion is large, which reduces the space for the operator's body.

The present invention has been made in view of such circumstances, and an object thereof is to reduce the operation space of the mowing clutch and the threshing clutch and to improve the operability thereof.

[Means for solving the problem]

A characteristic configuration of the present invention for achieving the above object is to provide, in the clutch operating structure of the combine described at the beginning, a single actuator that is driven by the command of the command means, and an operating member that is driven and displaced by the actuator. , The operating member and the operating members of the both clutches are separately linked via first and second cam portions that set the operating order and operating amount of the operating members based on the driving displacement of the operating members. Then, based on the detection results of the first and second detection means and the detection results of the first and second detection means, the operation of the actuator is detected. And a stopping means for stopping the operation, wherein both of the clutches are set to be disengaged by the displacement of the actuating member, the threshing clutch is engaged, and the reaping clutch is disengaged. Work state, the certain respective state of the working state of enters both clutches both a point that is configured to be revealing in this order.

[Action]

According to the above configuration, when a single actuator is driven by operating command means such as a switch provided in the control section,
The actuating member is driven and displaced. The operating member and each operating member of the both clutches are separately linked through first and second cam portions that set the operating order and operating amount of each operating member based on the driving displacement of the operating member. Therefore, by driving displacement of the actuating member, first, only the operating member for the threshing clutch can be displaced.

When the operating member for the threshing clutch is displaced to the position corresponding to the clutch engaged position, the first detecting means detects that, and the stopping means stops the operation of the actuator based on the detection result of the first detecting means. Let With this, only the threshing clutch is engaged (pillow handling work).

Next, when the command means is operated to drive the actuator, the actuating member is driven and displaced, and in the same manner as described above,
By the action of the first and second cam portions, the operating member for the threshing clutch can be displaced while the operating member for the threshing clutch is set at the position corresponding to the engagement of the clutch. When the operating member for the reaping clutch is displaced to the position corresponding to the clutch engaged position, the second detecting means detects that, and the stopping means operates the actuator based on the detection result of the second detecting means. To stop. with this,
Both clutches are engaged (cutting threshing work).

As described above, according to the above configuration, the operation of the command means can obtain the disengaged state of both clutches, the engaged state of only the threshing clutch (pillow handling work), and the engaged state of both clutches (cutting threshing work). You can

〔The invention's effect〕

Therefore, according to the present invention, it is only necessary to install a command means such as a switch that does not require a large operation space in the control section and is easy to operate, and the operator's living space is expanded and the operability is improved. Could be achieved.

Moreover, since there is a single actuator that drives and operates both clutches, it is easier to carry out at a lower cost than when, for example, two actuators that independently drive and operate each clutch are used. Further, in the combine harvester, in order to prevent the cutting culm from being supplied to the threshing device that is stopped, it is necessary to restrain the engagement state of only the cutting clutch, and when two actuators are used as described above. Requires a means for performing this restraining means separately, but in the present invention, since the operating states of both clutches are standardized by the operating amount of a single actuator, the appearance of the engaged state of only the cutting clutch is revealed. There is no room to do so, and it is possible to obtain only the required clutch operation mode without requiring any special restraint means, which is also excellent in this respect.

〔Example〕

The front of the combine is shown in FIG. This combine comprises a cutting pretreatment device (2) for cutting the planted culm and transporting the cut culm to the threshing device (1), and the threshing for handling the cutting and transporting stalks from now on. In addition to the device (1), a threshing clutch (C1) and a reaping clutch (C2) for connecting and disconnecting the power to these devices (1) and (2) are provided.

As shown in FIGS. 1 and 2, both clutches (C
The operating members (3) and (4) of (1) and (C2) are brought into engagement and contact with an operating member (6) which is driven and displaced by a single electric motor (5), and at the same time, the operating member (6) Both clutches (C1) and (C2) are in a disengaged work state due to displacement, the threshing clutch (C1) is engaged and the mowing clutch (C2) is in a disengagement work state, the both clutches (C1),
(C2) Each of the common work states can be displayed in this order.

The actuating member (6) is composed of a disc (6) fitted onto the support shaft (7) so as not to be able to rotate relative to each other, and rollers (6) and (6b) of the disc (6) are respectively attached to rollers (6). 8) and 9) are provided so as to project with a predetermined angular phase shift.

A large-diameter gear (11) sandwiched between two friction plates (10) and (10) in the axial direction at one end of the support shaft (7) is rotatable relative to the support shaft (7). The manual operation lever (12) is externally fitted to the other end so as not to be relatively rotatable.

Then, the small diameter gear (15) of the electric motor (5) is engaged with the large diameter gear (11), and an operating member (3) capable of swinging around an axis (P) parallel to the support shaft (7), (4) is configured to engage with the rollers (8) and (9) from above.

Both of the operation members (3) and (4) are provided with both clutches (C
1) and (C2) are mechanically engaged and disengaged by a rod or the like, and these clutches (C1) and (C2) are urged by a spring or the like toward the disengaging side, which is the downward swinging side.

The rollers (8) and (9) are arranged such that the roller (8) on the threshing clutch side is shifted in phase by a predetermined angle ahead of the roller (9) on the reaping clutch side in the direction of rotation of the disc (6). In addition, the operation members (3) and (4) have concave portions (13) and (1) on the contact surfaces with the rollers (8) and (9).
4) and a limit switch (1) that is turned on and off by contact with the tip of each operation member (3), (4).
6), (17) (an example of first and second detecting means and stopping means)
Is provided to constitute a clutch operating mechanism (A).

Next, the operation of the clutch operating mechanism according to this embodiment will be described.

First, when the threshing device activation switch (19) (an example of command means) of the control section (18) shown in FIG. 3 is turned on, the electric motor (5) rotates, and as shown in FIG. 4 (a). The threshing clutch operating member (3) is the threshing clutch side roller (8).
When it is pushed by, it swings upward and threshing clutch (C
When 1) is turned on, the engagement between the tip of the threshing clutch operation member (3) and the threshing side limit switch (16) is released, and the motor (5) is stopped. In other words, the state of only threshing is maintained.

Next, the harvesting device start switch (20) of the control section (18)
When (an example of command means) is turned on, the motor (5) is rotated again, and the cutting clutch operating member (4) is pushed by the cutting clutch side roller (9) as shown in FIG. As the cutting clutch (C2) is turned on and the cutting clutch (C2) is turned on, the motor (5) is stopped again due to the engagement between the tip of the cutting clutch operating member (4) and the cutting side limit switch (17). is there. At this time, in the threshing clutch (C1), the operating member (3) is threshed by the abutting action of the arc surface (13A) of the recess (13) formed in the operating member (3) and the threshing clutch roller (8). You will continue to keep the clutch engaged. That is, the arc surface (13
A) is set to an arc surface centered on the center of rotation of the disc (6), and this arc surface (13A) corresponds to the predetermined angle, that is, the angular deviation between the rollers (8) and (9). The threshing clutch (C1) and the reaping clutch (C2) are combined.

When the reaper starting switch (20) is turned off, the motor (5) rotates in the opposite direction and the threshing side limit switch (1
6) Stops when actuated, ie threshing clutch (C1)
When only the threshing device start switch (19) is turned off, the motor (5) further rotates in the opposite direction,
Both the reaping clutch (C2) and the threshing clutch (C1) return to the cutting stopped state.

Also, when the emergency stop switch (21) of the control unit (18) is turned on during the mowing and threshing work, the motor (5)
Rotates further from the state shown in Fig. 4 in the forward direction, and the arcuate surfaces (13A) and (14A) of both recesses (13) and (14) engage both the cutting clutch (C2) and the threshing clutch (C1). After the state continues for a slight angle, the deep recesses (13B), (14B) provided in the recesses (13), (14) of both operating members (3), (4) are brought into contact with both rollers (8), (9). Due to this action, both the operation members (3) and (4) rapidly descend and swing simultaneously, and as a result,
At the same time and after turning on the emergency stop switch (21), both the threshing and mowing clutches (C1) and (C2) are quickly disengaged.

The manual operation lever (12) is provided when the electric motor (5) cannot operate due to an electric system trouble or the like.
It is for manually operating the operating member (6) and is directly connected to the support shaft (7). Therefore, even if the electric motor (5) is stopped, if the manual operation lever (12) is forcibly rocked. The large-diameter gear (11) slips on the support shaft (7) due to the existence of the friction plate (10), and the manual operation has priority. Since the manual operation lever (12) is not normally used, it is installed at a position where it does not interfere with the control section (18).

As a switch for controlling the electric motor (5), as shown in FIG. 6, a multi-contact switching type switch (22)
And the emergency stop switch (21) may be used.

Further, although the operating members (3) and (4) are driven by the electric motor (5) in this embodiment, they may be driven by an electromagnetic solenoid, a hydraulic cylinder or the like, and these are collectively referred to as an actuator (5). Call.

[Another embodiment]

In addition to the above-described embodiment, when the engine key is turned off, the motor (5) rotates, and the threshing and threshing clutches (C
If 1) and (C2) are turned off, it is possible to prevent both the threshing device and the mowing device from being driven at the time of engine start at the time of next use, and the safety is improved.

The rollers (8) and (9) and the roller contacting peripheral portions of the threshing clutch operation member (3) and the reaping clutch operation member (4) form the first and second cam portions (23) and (24). ).

It should be noted that reference numerals are added to the claims for convenience of comparison with the drawings, but the present invention is not limited to the structures of the accompanying drawings by the entry.

BRIEF DESCRIPTION OF THE DRAWINGS The drawings show an embodiment of the present invention, FIG. 1 is a structural view showing a main part of a clutch operating mechanism, FIG. 2 is a sectional view showing a drive structure of a spindle, and FIG. Plan view of the control section, Fig. 4 (a),
(B) is an operation view showing the movements of the threshing clutch operation member and the reaping clutch operation member, FIG. 5 is a side view of the combine front portion, and FIG. 6 is a main part plan view showing another embodiment of the switch. is there. (1) ... threshing device, (2) ... pre-mowing treatment device,
(3), (4) ... Operating member, (5) ... Actuator, (6) ... Actuating member, (16), (17) ... Detecting means, (19), (20) ... Commanding means , (23) …… First cam, (24) …… Second cam, (C1), (C2) …… Clutch.

Claims (1)

[Claims] 1. A cutting pretreatment device (2) for cutting a planted stem culm and transporting the cut stem culm to a threshing device (1),
And the threshing device (1) for handling the cutting and carrying stem culm in the future, and both of these devices (1), (2)
A clutch operating structure of a combine equipped with a threshing clutch (C1) and a reaping clutch (C2) for intermittently supplying power to a single actuator (5) driven by a command from command means (19), (20). ) And an actuating member (6) which is driven and displaced by the actuator (5) are provided, and the actuating member (6) and the operating members (3), (4) of the both clutches (C1), (C2) are provided. ) And the first and second cam portions (23) and (24) for setting the operation order and operation amount of the operation members (3) and (4) based on the driving displacement of the operation member (6). First and second detection means (16) and (17) which are separately linked to each other and detect respectively that the operating members (3) and (4) are displaced to positions corresponding to the clutch engagement position, respectively. The operation of the actuator (5) is stopped based on the detection results of the first and second detecting means (16) and (17). Stop means for controlling the operating member (6) to displace both the clutches (C1) and (C2) to the disengaged state, the threshing clutch (C1) is turned on, and the harvesting clutch (C2) is turned on. ) Is a clutch operating structure for the combine, in which the respective states of the disengaged working state and the working state of both the clutches (C1) and (C2) can be revealed in this order.