JPS5826291B2 - Switching operation mechanism in combine harvester straw processing equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a cutting device for cutting and processing waste straw discharged from a threshing device installed in the machine body, and a convergence processing device for collecting the straw discharged from the threshing device installed in the machine body. , a combine that is provided with a plurality of waste straw processing devices of different types, and wherein the threshing device stops discharging waste straw from a discharge culm by cutting off input to its input shaft; The present invention relates to an improvement in a switching mechanism that switches a plurality of waste straw processing devices so as to operate them alternately.

The above-mentioned switching operation mechanism of the waste straw processing device in the combine harvester has two states: the state in which the waste straw discharged from the threshing device of the combine is cut and discharged by the cutting device installed at the rear of the fuselage of the combine, and the state in which the waste straw is discharged. This is to switch to the state where the straw is concentrated and discharged by the processing device, and the straw discharging device that takes over the waste straw discharged from the culm of the threshing device and carries it out to the rear of the machine, and the discharge position. The discharge position is connected to a switching mechanism provided to switch the discharge position, and the switching operation is operated to switch the discharge position, but the switching operation is performed while the waste straw is being conveyed through the conveyance path of the straw removal device. If this occurs, the flow of waste straw will be disturbed, causing a blockage of waste straw in front of the cutting and cutting device, or the switching operation may become malfunctioning. A detector is provided in front to detect the presence or absence of waste straw, and the switching mechanism is activated only when the detector does not detect waste straw.

However, with this means, since the switching operation is performed if there is no waste straw at the detection position of the detector, there is a problem that the waste straw being conveyed during the switching operation may interfere with the switching mechanism.

An object of the present invention is to propose a new means for effectively solving this problem.

In order to achieve this object, the switching operation mechanism in the waste straw processing device of the combine harvester according to the present invention is provided at the rear of the machine body to cut and process the waste straw discharged from the threshing device installed in the machine body. A plurality of disparate straw processing devices, such as a cutting device and a convergence processing device that performs convergence processing, are installed so as to operate by switching alternately, and the threshing device is able to remove straw by cutting off the input to its input shaft. In a combine harvester configured to stop discharging waste straw from the culm, the threshing device is provided with a clutch for controlling input to/from the input shaft of the threshing device, and the plurality of waste straw processing devices are alternately operated. The switching mechanism is equipped with a regulating member that restricts the switching mechanism from operating when the clutch that controls the input of the threshing device is in the "engaged" state. It is something to do.

Next, an example of the embodiment will be described in detail based on the drawings. In FIG. 1, 1 is a combine harvester A equipped with a traveling device 2.
This is a conventionally known reaping unit mounted on the machine body a (the latter part is omitted), and is installed in the front of the machine body a (on the right side in FIG. 1) so as to be able to rise and fall freely.

In FIG. 2, B is a threshing device for threshing the husks harvested by the reaping section 1, and is mounted on the upper surface side of the aforementioned machine body a.

Reference numeral 3 denotes a foot chain device of the threshing device B, which is installed horizontally on two sides of the body of the threshing device B (lower side in Fig. 2) along the longitudinal direction of the body a of the combine harvester A. Its starting end 3a protrudes forward from the culm entrance 41 of the handling chamber 4 provided at the front of the body of the threshing device B (left side in Figure 2), and is used to collect the culm stocks harvested by the reaping section 1. The terminal end 3b is located so as to protrude rearward from the culm opening 42 of the threshing device B, and acts to convey the husk by the operation of the threshing device B, and the starting end 3a In the normal process, the husk inherited from the reaping section 1 is transported rearward and fed into the inside of the threshing device B, where it is subjected to threshing processing, and then discharged as waste straw from the culm outlet 42 of the threshing device B by the terminal section 3b. This is a conventionally known device, and when the operation of the threshing device B is stopped, the above-mentioned action of conveying the husk is stopped, thereby stopping the discharge of waste straw from the culm discharge port 42 of the threshing device B. There is.

Reference numeral 5 denotes a clutch that controls the input to the input shaft 44 of the threshing device B, that is, controls the connection/disconnection of power transmission from the prime mover (not shown), and is connected to a pulley (not shown) on the side of the prime mover. A transmission belt 46 is wound around a pulley 45 provided on an input shaft 44, and a tension pulley 51 is applied to the transmission belt 46 so as to move forward and backward.

As shown in FIGS. 4 and 5, the tension pulley 51 is interlocked with a clutch lever 52 by a connecting member such as a wire, and by switching the clutch lever 52 between the solid line position and the chain line position, the transmission belt 46 is switched between a tensioned state and a relaxed state to disconnect and connect power transmission to the input shaft 44.

As shown in FIG. 1, the clutch lever 52 is disposed near the driver's seat provided at the front end of the fuselage a of the combine A.

6 is a cutting device for cutting the threshed waste straw discharged from the above-mentioned discharge culm 42, and as shown in Fig. Machine frame 6 formed in the shape of a machine casing (in the horizontal direction of a and the vertical direction in Fig. 2)
In the cutting chamber 62 having one inner cavity, there are a large number of rotating teeth 63 and a scraping tooth 63a that rotate in opposition to each other as shown by arrow A in FIG.
... are mounted on parallel shafts, the upper opening of the machine frame 61 is formed as a receiving port 64, and the lower opening is formed as a discharge port 65 for discharging the cut pieces cut by the rotary teeth 63 to the outside. It is composed by forming.

I transfers the threshed waste straw that is pulled out from the discharge culm 42 of the threshing device B by the terminal end 3b of the foot chain device 3 and discharged from the threshing device B to the combine harvester A.
This is a straw removal device for carrying out the straw to the rear of the machine body a of the combine harvester A, and is arranged obliquely to the front and back direction of the machine body a of the combine A when viewed from the plane as shown in Fig. 2, and its starting end 7a is connected to the discharge culm opening. 42
It faces the adjacent site on the side, and is parallel to the terminal end 3b of the foot chain device 3 on the left and right.

Further, the terminal end 7b of the straw removing device 7 is provided on the rear surface of the machine frame 61 of the cutting device 6, beyond the above-mentioned receiving port 64 of the cutting device 6, and collects and processes the waste straw. It faces above the focusing device 66 (dropper).

This straw removal device 7 has an endless straw removal check 773 wrapped around a driving sprocket 71 and a driven sprocket 72 that rotate in the direction of the arrow in FIG. A guide rail 74 is opposed to the lower front half in the conveyance direction, and a switching guide rail 75 is opposed to the lower half of the lower surface of the check 773 located above the receiving port 64 of the cutting device 6. It is composed.

The switching guide rail 75 is formed in the shape of a shutter that is located on the left and right sides of the straw dispensing chain 73 in plan view and closes the upper surface of the receiving port 64 of the cutting processing device 6. The right end in FIG.
As shown by the solid line in the figure, the straw removal device 7 takes over the waste straw released from the terminal end 3b of the foot chain device 3 and carries it out to the rear of the machine a by taking an upwardly rotated attitude. The waste straw to be carried out is blocked by the switching guide rail 75 above the receiving port 64 of the cutting processing device 6, and flows downward into the receiving port 64, and from the above state position downwardly. By rotating the straw removal device 7 to a position in which the guide rail 74 is extended in a side view, the straw to be carried out is supported on the upper surface of the switching guide rail 75 and the straw removal device 7 is moved to the machine frame of the cutting device 6. It constitutes a switching mechanism (switching shutter) that allows it to be carried out to the rear of 61.

Reference numeral 8 denotes a switching operation mechanism for switching the switching guide rail 75, which is the switching mechanism, and a switching lever case 81 is installed in front of the lever case 53 of the clutch lever 52 provided in the vicinity of the driver's seat of the machine body a of the combine A. At the same time, a switching lever 84 is provided which rotates back and forth while being regulated by a guide groove 82 provided in the switching lever case 81, and the switching lever 84 is connected to the switching guide rail 75 and the wire 8.
By switching and rotating the switching lever 84 between the solid line position and the chain line position, the switching guide rail 75 is rotated up and down about the rotation axis 77, and the straw removal It acts to switch the waste straw carried out by the device 7 between a state in which it is fed into the receiving port 64 of the cutting device 6 and a state in which it is fed beyond the receiving port 64 to the converging device 66 (dropper).

9 connects the switching operation mechanism 8 to the input shaft 44 of the threshing device B.
This is a regulating member that prevents the clutch 5 from operating when it is in the "on" state, which controls the connection/disconnection of the input to the clutch lever 52, as shown in FIGS. 4 and 5. The rear end of the regulating rod 91, which is formed long in the front and back, is attached to the connecting pin provided in the body, and the regulating rod 9 is attached to the clutch lever 52 by rotating the clutch lever 52 in the longitudinal direction.
1 are connected to move back and forth, and the front end of the regulating rod 91 is connected to a guide cylinder provided behind the rear end of the guide groove 82 of the switching lever 84, which is disposed in front of the clutch lever 52. The clutch lever 5 is fitted into the guide tube so that its front end protruding from the guide tube faces the rear end of the guide groove 82, as shown by the solid line in FIG.
2 is in the "off" state position, as shown in FIG. When the clutch lever 52 is rotated to the "contact" position as shown by the chain line in FIG. 5, the clutch lever 52 protrudes forward along the upper surface of the guide groove 82, The switching lever 84 is switched to a state in which the movement of the switching lever 84 is locked.

Next, to explain the function and effect, straw processing devices such as a cutting device 6 for cutting and processing the waste straw discharged from the threshing device B and a convergence processing device 66 for collecting the waste straw are arranged alternately at the rear of the machine a. In the combine harvester A, which is installed to operate in a switched manner, the waste straw discharged from the threshing device B is cut and discharged by the cutting device 6, and condensed by the convergence device 66. In order to switch to the state where the straw is discharged from the threshing device B, a switching mechanism (switching guide rail 75) provided in the middle of the conveyance path of the straw removal device 7 that carries out the waste straw discharged from the threshing device B to the rear of the machine a is switched. This is done by operating the operating mechanism 8, but the switching operation is performed by the straw removal device 7.
If this is done while waste straw is being transported through the transport route, it may cause malfunctions in the switching operation or damage to the cutting equipment 6.
There is a problem that the waste straw becomes clogged in front of the receiving port 64 of the container.

To solve this problem, a detector for detecting the presence or absence of straw is installed before the switching mechanism on the conveyance path of the straw removal device, and when the detector detects the presence of straw, the switching mechanism is activated. There is a known method to prevent the straw from moving, but this means that the switching mechanism will be activated if the straw does not come into contact with the detector, so if the combine A machine is temporarily stopped, the straw will not move. Since the switching mechanism is activated even when the detector is located in the event of a short interruption in the flow of waste straw that occurs on the conveyance path of the dispensing device 7, the continuously fed waste straw will be There is a problem in that it interferes with the switching mechanism that is in the process of operating, resulting in the various inconveniences mentioned above.

However, in the switching operation mechanism in the straw disposal device for a combine harvester according to the present invention configured as described above,
The switching operation mechanism 8 that operates the switching mechanism (switching guide rail 75) operates the clutch 5 that controls the input of rotational power to the input shaft 44 of the threshing device B to the “engaged” state position, and the threshing device B When the threshing device B is in operation, it is locked from operation by the regulating member 9, so the threshing device B is in operation and waste straw is continuously discharged from its discharge culm port 42. In this state, the switching operation mechanism 8 cannot be operated, and when operating the switching operation mechanism 8 to change the straw removal route, the input to the input shaft 44 of the threshing device B must be input before the operation. Discontinuation/
The clutch 5 to be engaged is moved to the "disengaged" state position to switch the threshing device B to a non-operating state, thereby releasing the lock of the aforementioned regulating member 9, and then, The switching operation mechanism 8 is now operated.

For this reason, when switching the straw path, which is performed by operating the switching operation mechanism 8, the operation of the threshing device B is always stopped by operating the clutch 5, and the straw is removed from the culm opening 42 of the threshing device B. When the switching operation mechanism 8 is operated to switch the route of the straw, which is to be carried out after the straw discharge is not discharged, the straw discharge device 7 is in a state where the straw is not fed out. This eliminates malfunctions caused by the interruption of the flow of waste straw in the conveyance path of No. 7, and reliably solves the problem of disrupting the flow of waste straw during switching operation and causing a failure if it becomes clogged.

[Brief explanation of drawings]

Fig. 1 is a side view with the latter half of the combine harvester embodying the present invention omitted, Fig. 2 is a schematic plan view of the threshing device, Fig. 3 is a side view of the same, Fig. 4 is a side view of the main parts, and Fig. 4 is a side view of the main parts. Figure 5 is a plan view. Explanation of drawing symbols, A... Combine harvester, a...
...0 aircraft, B...Threshing device, 1...
Reaping section, 2... traveling device, 3... foot chain device, 3a... starting end, 3b...
・・・Terminal part, 4... Handling room, 41...
Culm entrance, 42...Culm exit, 44...
Input shaft, 45...Pulley, 46...
Transmission belt, 5...Clutch, 51...
・Tension pulley, 52... Clutch lever 53... Lever case, 6... Cutting device, 61... Machine frame, 62... ... Cutting chamber, 63 ... Rotating tooth, 63a ... Scratching tooth, 64 ... Reception opening, 64a ... Rear end edge, 65 ... Discharge port, 66 ... Convergence processing device, 7 ... Straw removal device, 7a ...
・Starting end, 7b... Terminating end, 71...
Drive sprocket, 72... Driven sprocket, 73... Straw removal check 7.74... Guide rail, T5... Switching guide rail, 75a.
...Front end, 77...Rotation axis, 8...
...Switching operation mechanism, 81...Switching lever case, 82...Guide groove, 83...Wire 84...Switching lever, 9... ...Regulation member, 91...Regulation rod.

Claims (1)

[Claims] 1 At the rear of the machine, there are a plurality of different types of waste straw processing devices, such as a cutting device that cuts and processes the waste straw discharged from the threshing device installed in the machine, and a convergence device that collects the waste straw. In the combine harvester, which is mounted to operate in an alternating manner, and wherein the threshing device stops discharging waste straw from the culm by cutting off the input to its input shaft, the threshing device A clutch for controlling the input to the input shaft of the threshing device is provided, and a clutch for controlling the input to the threshing device is provided in the switching operation mechanism for switching the plurality of straw processing devices to act alternately. 1. A switching operation mechanism in a combine harvester waste straw processing device, characterized by being equipped with a regulating member that restricts the switching operation from being activated when the switching operation is in the "connected" state.