JP3406751B2 - Engine stop device in harvester - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an engine stop device for a harvester.

[0002]

2. Description of the Related Art Conventionally, a harvester having a traveling machine equipped with a thresher, a control section, an engine, etc., has a manual stop switch for stopping the engine during work, and the stop switch is generally provided. It is configured by a push-button switch system or a pinch-type switch that doubles as a starter key switch of the engine.

[0003]

However, the conventional stop switch configuration of the above-mentioned harvester is used when an operator stands by the start end side of the feed chain to perform the manual operation of supplying the grain culms to the feed opening of the threshing machine. When a foreign substance mixed in the grain culm is found or trouble occurs such as the grain culm is clogged, or when the worker's clothes are accidentally caught, it is necessary to stop the engine urgently. The stop switch provided in the control section is located away from the manual operation position, and is disturbed by a large number of operation levers such as the threshing lever and the traveling lever installed upright on the control section, and There is a drawback that the inside worker cannot easily and quickly stop the stop switch on the spot, and it takes time to stop the switch, and it is difficult to appropriately deal with the situation such as the above trouble. is there There is a problem.

[0004]

In order to solve the above-mentioned problems, the engine stopping device in the harvester of the present invention is
A threshing machine, a control unit, an engine, and the like are placed on a traveling machine body having a traveling device, and the threshing machine is lowered along the handle of the threshing machine.
Horizontally installed feed chain with the side facing the transporting surface
From the beginning to the end of the feed chain in the transport direction.
In the harvester where the non-conveying side of the front surface and the top surface are covered with a chain cover, for manual operation by the operator
Provided the engine stop switch, the stop switch at beginning closer spaced by a predetermined distance in the conveying direction from the starting of the <br/> chain cover, and distribution to the upper part of the chain cover
And location, and configured to be pushed operable to stop switch of the engine from the hand扱作industry position.

Further, it is characterized in that the pressing contact portion of the stop switch is formed so as to have a wide surface substantially equal to the width of the hand and a flat surface substantially flush with the chain cover or slightly protruding so as to be mounted. There is.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described with reference to the drawings. 1 is a harvester according to the present invention, in which a thresher 2 and a control unit 3 are arranged in the front-rear direction on a traveling machine body 1b having a crawler type traveling device 1a, and an engine 4 is provided below the control unit 3. It is placed in a state of being covered with the control panel 3a and the engine compartment cover 3b. A handle 3c is projected rearward from both sides of the control panel 3a, and a grain storage section 2c composed of a grain discharge gutter 2a and a bag support 2b is provided above and below the handle 3c.

Various operating levers such as a threshing lever 30, a speed change lever 31, and a steering lever 32 are erected on the control panel 3a, and the engine 4 is started and stopped at the central portion thereof. A knob type key switch 33 connected to the ignition plug assembly (stop device) 77 is installed. The engine 4 shown in FIG. 1 is a gasoline engine, and 35 is its throttle lever.

On the other hand, in the threshing machine 2, the idler wheel 5a on the starting end side and the driving wheel 5b on the terminal end side along the handling direction 2k are arranged.
A feed chain 5 is stretched between the feeding chain 5 and the feed chain 5, and the feed chain 5 serves as an upper chain for sandwiching and transporting the grain stalks on the lower side, and a sandwiching rail 5c is provided opposite to the transport surface side to control the steering unit 3 Face to face. In addition, the cereal culm supply table 2d is foldably mounted so that the starting end side of the feed chain 5, that is, the left side of the threshing machine 2 is the manual operation position, and the straw conveying device 2e is installed on the end side. It is provided to discharge and transport the grain culms that have already been threshed. 6 is a thresher 2
Is a discharge tube for detaching dust, which is detachably attached to the front of the device by a configuration described later.

As shown in FIG. 2, the feed chain 5 has a chain cover consisting of a front plate 51 and a top plate 52 for covering the non-conveying side of the front surface and the upper surface from the starting end side to the terminal end side in the conveying direction. 50, a starting end side of the upper plate 52 is formed with a downward sloped starting end part cover 53 along the rotation locus of the upper part of the chain starting end, and constitutes a guide receiving surface of the grain culm at the time of supplying the grain culm. The grain culm is prevented from coming into contact with the feed chain 5. Further, the engine 4 is located at a position above the start end of the chain cover 50, which is separated from the start end of the chain cover 50 by a predetermined distance H in the transport direction, at a position where the operator can reach out and operate the hand 4 from the manual operation position. A stop switch 7 for stopping is provided so that the operation of stopping the engine 4 in an emergency can be performed quickly and easily.

In this stop switch 7, the pushing portion 70 pushed by hand is formed in a flat shape having a wide surface approximately equal to the width of the hand, and the pushing portion 70 has substantially the same shape. The chain cover 50 is inserted into a mounting hole 55 formed in the chain cover 50 so as to be able to perform a push operation, and is mounted such that its flat surface is substantially flush with the front plate 51 or slightly protrudes. As a result, the pressing portion 70 is prevented from being excessively protruded from the front surface of the chain cover 50 to prevent the accumulation of straw debris and the like, and is conveyed from the feed chain 5 in a state of being protruded toward the front side and bounced back. An operator can easily and accurately push the pressing portion 70 in a standing position in the hand-working position without causing contact with the stock base or weeds, etc., so that the engine 4 can be reliably stopped. ing.

The upper portion of the pressing portion 70 is rotatably supported so as to form an integral assembly with a support shaft 75 of a mounting plate 73 to which a switch 72 is fixed.
3 is attached to the inside of the upper surface plate 52 by a mounting bolt 71, and the push contact portion 70 is pushed and rotated about a support shaft 75, so that the switch 72 is attached to the inner surface of the push contact portion 70.
The terminal of is operated to push. As a result, the switch 72 can cut off the electric current of the stop device 77 of the engine 4 connected by the electric wire 76, and stop the engine 4 appropriately.

In the threshing work by the harvester 1 configured as described above, the operator puts the grain culm placed on the grain culm supply table 2d in the upper hand operation position while the machine is not traveling. Chain type feed chain 5
The grain culm is sandwiched and conveyed between the feed chain 5 and the sandwiching rails 5c by being sequentially supplied to the starting end portion of the grain, and after being threshed in the threshing machine 2, the grain culm is continuously conveyed and discharged by the straw conveyor device 2e. At the same time, the thresher is sorted in the thresher 2, and the grains are stored in the grain storage unit 2c and the dust is discharged from the discharge cylinder 6 to the outside of the unit.

At this time, when there is a foreign substance mixed in the grain culm, when trouble such as clogging of the grain culm occurs, or clothes of the operator are accidentally caught on the starting end of the feed chain 5 or the machine body. In such a case, the operator extends his hand on the spot without moving from the manual operation position and pushes the stop switch 7 provided on the chain cover 50 to stop the engine 4 in an emergency. It is possible to deal with such a situation quickly and easily. That is, the stop switch 7 is formed in a flat shape having a wide surface approximately equal to the width of the hand, while being provided in the upper portion near the start end portion which is separated from the start end of the chain cover 50 by the predetermined distance H in the transfer direction. Since the pressing portion 70 is attached and configured so as to be substantially flush with the chain cover 50 or in a state of slightly protruding, the operator places a stop switch on the control portion 3 which is separated from the conventional manual operation position. Unlike the installed one, it is possible to easily push and operate with the palm while reaching the hand operation position without being disturbed by the operation lever or the like that is erected on the control section 3. Further, when the grain culm placed on the grain culm supply table 2d is supplied to the starting end of the feed chain 5, the grain culm contacts or rides on the starting end cover 53 of the chain cover 50, but stops. Switch 7
Is provided at an upper portion separated from the conveyance start end of the chain cover 50 by a predetermined distance H that can be pushed and operated. Therefore, the grain culms on the start end cover 53 and the grain culms existing at the start end of the feed chain 5 and the nipping and conveying are provided. There is no possibility that the stockers of the early grain stalks will come into contact with the stop switch 7 to cause a malfunction, and the pressing portion 70 can be accurately pushed to operate the engine 4 promptly without any obstacle to these grain stalks. You can stop at.

Further, since the pressing portion 70 prevents the accumulation of straw debris and the like and does not cause contact with the base of the grain culm and the weeds which are conveyed in a bounced state, the stop switch 7 No malfunction or malfunction will occur. The mounting structure of the stop switch 7 is not limited to the one described above, and may be structured as shown in FIG. That is, the pressing portion 70 in this embodiment is formed in an L-shaped cross section so as to be fitted into the mounting hole 55 opened across the front plate 51 and the upper plate 52 of the chain cover 50, and the above-mentioned embodiment is used. By rotatably attaching to the chain cover 50 in the same manner as described above, it is possible to easily push the pressing portion 70 from any direction such as the front surface, the upper surface and the corner portion thereof. The switch 72 is smoothly rotated so that the switch 72 is reliably operated. The pressing portion 70 described above may be covered by attaching a flexible film plate (film) 79 made of rubber or plastic around the attachment hole 55 of the chain cover 50.

Next, another embodiment for stopping the diesel engine 4 by the stop switch 7 described above with reference to FIG. 3 will be described. In this case, the stop switch 7 includes a drive motor 9a that operates so as to cut the fuel of the fuel adjustment lever 40 of the engine 4, and an operation arm 9b.
The engine 4 is configured to be able to be stopped urgently by operating the stop device 9 consisting of. That is, the fuel adjusting lever 40 has a governor spring that urges the fuel adjusting lever 40 back to the fuel cut position, and is connected to the intermediate lever 41 pivotally supported by the support shaft 41a through the pulling spring 42. The intermediate lever 41 connects an end portion of an inner wire 37 for throttle operation, which is inserted into an outer wire 36 having both ends fixed to a throttle lever 35 and an operating plate 90, and locks a return spring 41b. Then, it is urged back toward the fuel cut position.

On the other hand, the operating plate 90 is rotatably supported by a support shaft 93 on a supporting plate 91 protruding from the engine 4, and a mounting plate 43 and a supporting plate protruding on the other side of the engine 4. The inner wire 96, which is fixed at both ends to 91 and is inserted into the outer wire 95, is fixed at its end. Since the stop device 9 is stopped while pulling and fixing the inner wire 96 while the stop switch 7 is not operated, that is, while the engine 4 is operating, the inner wire 96 is stopped.
The operating plate 90 is positioned and supported at the operating position indicated by the solid line via. Therefore, when the throttle lever 35 is rotated in the arrow direction and the opposite direction from this state, the intermediate lever 41 is swung via the inner wire 37,
By rotating the fuel adjusting lever 40 in the operating direction, the engine 4 can be adjusted so as to be able to rotate at high speed and low speed.

Then, when the motor 9a of the stop device 9 is rotated by the pushing operation of the stop switch 7 by the operator,
Since the operating arm 9b pivotally moves to the dotted line to release the inner wire 96 by pulling it, the operating plate 90 connected to the end of the inner wire 96 is returned to the return spring 4
1b pivotally moves together with the outer wire 36 for the throttle via the intermediate lever 41 and the inner wire 37 to the dotted line state. As a result, the intermediate lever 41 releases the regulation of the fuel adjusting lever 40, and the fuel adjusting lever 40 is rotated by the pulling spring 42 and the return restoring force of the fuel adjusting lever 40 to the fuel cut position as shown by the dotted line. To stop the engine 4 accurately. With the above-described configuration, it is possible to provide the engine stop device of the harvester that can reliably stop the engine of the diesel engine 4 with the stop switch 7 of the present invention with a simple configuration.

Next, the mounting structure of the discharge cylinder 6 will be described with reference to FIGS. The discharge tube 6 is formed in a rectangular tube shape, and the dust removal fan 2 installed in the thresher 2
A base cylinder 60 that is detachably attached to a mounting hole 23 formed in the machine wall 22 while being fitted onto the discharge port 21 of 0, and extends along the machine wall 22 via a hinge portion 62 in the base cylinder 60. Thus, the front cylinder 63 is bent and is switched to the storage posture. In the base cylinder 60, the engaging piece 65 is bent and formed on the lower side portion thereof, and the mounting piece 67 having the mounting screw 66 is provided on the upper side portion thereof, and the engaging piece 65 of the mounting hole 23 opened on the machine wall 22. The attachment piece 67 is fastened to the machine wall 22 by the attachment screw 66 in a state of being elastically engaged with the lower inner edge. Thus, when the harvester 1 is transported, the discharge tube 6 can be easily and easily removed from the thresher 2 so that it can be efficiently transported in a compact packing form, and its mounting and restoration work can be easily performed. I am able to do it.

[0019]

As described above, according to the first aspect of the present invention, the front and upper non-conveying sides of the feed chain for sandwiching and transporting the grain culms on the lower side are covered with chain covers, and the operator pushes them. Since the engine stop switch for manual operation is provided near the starting end part, which is separated from the starting end of the chain cover by a predetermined distance in the conveying direction, and is located above the chain cover, the operator can manually operate the switch as in the conventional one. The stop switch can be operated quickly and accurately without moving from the position to the control section or being disturbed by the operating levers, etc., and the engine can be stopped in an emergency, and emergency measures can be taken promptly. It can be carried out. Also,
The grain culm existing at the start end of the feed chain, the grain culm that abuts or rides on the start end of the chain cover, and the roots and weeds of the grain culms that are nipped and conveyed abut the stop switch, causing malfunction. These grain culms can be operated easily and accurately without becoming an obstacle during the operation of the stop switch.

According to the second aspect of the present invention, the stop switch has the pressing contact portion formed into a flat and wide surface shape, and is provided without largely protruding from the chain cover.
The pushing operation is easy with the palm, and the accumulation of straw debris on the pressing portion and the contact with the root of the grain culm transported in a bounced state or the weeds are prevented, and the stop switch malfunctions. To provide an engine stop device for a good harvester that does not have a malfunction or the like.

[Brief description of drawings]

FIG. 1 is a rear perspective view of a harvester including an engine stop device according to the present invention.

FIG. 2A is a front view of a chain cover and a feed chain. (B) is a sectional view taken along the line AA of FIG. (C)
FIG. 6 is a cross-sectional view showing a configuration of a pressing portion according to another embodiment.

FIG. 3 is a perspective view showing an engine stop device according to another embodiment.

FIG. 4 is a front perspective view of FIG.

FIG. 5 is a cross-sectional view showing a mounting structure of a discharge tube of the thresher.

[Explanation of symbols]

1 harvester 2 thresher 3 control section 4 engine 5 feed chains 6 discharge tubes 7 stop switch 9 stop device 50 chain cover 51 front plate 52 Top plate 53 Start end cover 55 Mounting hole 70 Pressing part 72 Switch 73 Mounting plate

Claims (2)

(57) [Claims] 1. A traveling machine body (1) having a traveling device (1a).
b) A threshing machine (2), a control part (3), an engine (4), etc. are placed on the threshing machine (2), and a handle for the threshing machine (2).
Fee with (2k) the lower side being the grain culm sandwiching and conveying surface
The feed chain (5)
Non-carrying of the front and top surfaces from the beginning to the end of the
In the harvester (1) whose transmission side is covered with the chain cover (50), the operator manually pushes the harvester (1).
The engine (4) stop switch (7) is provided and the stop switch
Of the engine (4) by arranging the chi (7) at a position closer to the starting end part, which is separated from the starting end of the chain cover (50) by a predetermined distance (H) in the transport direction, and above the chain cover (50). An engine stop device in a harvester (1), characterized in that the stop switch (7) can be pushed and operated from a manual operation position. 2. The pressing portion (7) of the stop switch (7).
The harvester (1) according to claim 1, wherein (0) is attached to a wide surface approximately equal to the width of the hand and is formed to have a flat shape substantially flush with the chain cover (50) or slightly protruding.
Engine stop device.