JP2968174B2 - Combine grain culm conveyor - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a grain culm conveying section of a combine for pinching and conveying a raised and cut cereal stem toward a threshing feed chain.

[0002]

2. Description of the Related Art The grain culm conveying section of the above-mentioned combine is composed of a stock-holding / conveying device and a tip-locking / conveying device. I was Then, when it is detected by a sensor such as a switch that the gripping rail is displaced more than a set amount with respect to the stock transport chain due to an increase in the amount of grain transported by the stock transporting device, an alarm device is activated. Further, the transfer device and the engine are automatically stopped as required.

[0003]

However, the clamping force of the clamping rail is considerably increased in order to ensure the transport of the culm. If the displacement of the clamping rail in the separating direction is to be detected by the sensor, The amount of displacement of the holding rail in the separation direction is small for the increase of the transported grain culm amount of the transport chain, that is, the ability to follow the increased transported grain culm amount is poor, so the clamping force is weak even when the alarm device is not activated. There is a possibility that a transport jam may occur due to an increase in the volume of the transported culm at a place where the transport jam occurs, and there is room for improvement from the viewpoint of improving the reliability of preventing transport jam. SUMMARY OF THE INVENTION It is an object of the present invention to detect an increase in the amount of grain transported by a stock-holding / conveying device with a sensor with high sensitivity and to appropriately issue an alarm.

[0004]

According to a first feature of the present invention, a holding rail is provided so as to be able to approach and separate from the stock transfer chain and to be urged in the approach direction. From the stock transfer chain
Clamp made of spring wire for transferring grain stalks to the chain
A rail rod extends rearward from the rear end of the holding rail in a cantilever manner. Based on the amount of movement of the holding rail rod in a direction away from the stock feed chain, the amount of grain transported by the stock feed chain is increased. Clogging sensor to detect
Install and hold the clamping rail rod to the rearward cantilevered extension.
The free end side extension of the minute is bent and inverted so that it faces forward.
And the free end of the holding rail is
The point is that it extends to the information sensor .

[0005] wherein the configuration of the invention according to claim 2, pinching Les
To and away from the stock carrier chain.
Provided in a state of being biased in the near direction, and
Grain from the stock transfer chain to the feed chain
Hold the clamping rail made of spring wire for culm delivery
The cantilever extends from the rear end of the holding rail in a cantilever
Movement of the rail rod in the direction away from the stock transfer chain
Based on the amount, check the increase in the amount of grain transported by the stock transfer chain.
Combine grain stalk transporter with detection means installed
Wherein said detecting means is adapted to release said holding rail rod from said release position.
Movement in the direction between the two
Mechanism that detects the change in position in the longitudinal direction
The point is that it is constituted .

[0006] The characteristic configuration of the invention according to claim 3 is as follows.
In the grain culm transporting section of the combine according to 2, a guide for restricting the movement of the extending portion, which is inverted and bent at the free end side of the holding rail rod, in the middle direction of the extending portion, is provided. The holding rail rod is attached to the holder 26 and the holder in a state of acting on the distal end of the extending portion, and the extension is caused by the movement of the holding rail rod in the direction away from the stock transfer chain. Depending on the pressing force at the tip of the protrusion
The point is that the clogging alarm sensor and the tip of the extension portion are relatively arranged in a state where the clogging alarm sensor is operated.

[0007]

According to the first aspect of the present invention, the holding rail rod made of a spring wire is used to lightly hold the culm released from being held by the holding rail so as not to fall off. When the sensor detects displacement in the direction away from the transport chain, the amount of displacement of the holding rail rod in the direction of separation is large for the increase in the transported grain culm of the stock transport chain, that is, the ability to follow the increased transported grain culm amount And the increase in the amount of grain transported by the stock transport chain can be detected with high sensitivity using a sensor, and an appropriate alarm can be given to effectively prevent a transport jam.

According to the third aspect of the present invention, since it has the characteristic configuration of the second aspect of the present invention, an increase in the amount of cereal culm of the stock conveyor chain can be detected with a sensor with high sensitivity, and an accurate alarm can be provided. Can be installed without any trouble caused by hooking. Furthermore, the movement of the extending portion of the holding rail rod in a direction other than the longitudinal direction is restricted by a guide acting on the intermediate portion and a guide acting on the distal end portion, and accompanying the displacement of the holding rail rod in a direction away from the stock transport chain. Since the switch type sensor is configured to be pressed at the tip of the extension, the sensor can be operated reliably with a sufficiently strong force while making the sensor inexpensive switch type and operating the switch with the holding rail rod. It is also advantageous in terms of economy and reliability of the detection operation.

[0009]

As a result, according to the first aspect of the present invention, it is possible to detect an increase in the amount of cereal culm of the stock transport chain with a sensor with high sensitivity and to accurately give an alarm. Combines can now be provided. Further, according to the third aspect of the present invention, an inexpensive switch-type sensor can be reliably operated by a holding rail made of a spring wire, which is advantageous in economy and reliability of detection operation.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIG. 1, a cutting unit 2 is connected to a front part of a vehicle body traveling by a crawler type traveling device 1 by a hydraulic cylinder 3 swinging around a support shaft 4 so as to be vertically movable. A threshing device 7, a driving unit, a control unit, and the like are mounted on a vehicle body. Also, the reaping unit 2 is equipped with the tip locking and conveying device 10 to constitute a self-removable combine.

As shown in FIGS. 2 to 5, the stock-holding / conveying device 8 is formed of a round bar material opposed to the stock-conveying chain 14 wound around the drive wheel and the idler wheel. The support rail 11 is fixed to a curved mounting frame 13 which detours the conveyance path by disposing the holding rail 15 close to the support path, and the swing arm 12 is mounted on the support member 11 with the support shaft 19, and the swing arm 12 is turned around the support arm 11. A holder 16 is movably mounted, and a pair of nuts 20 screwed to the support bolts 17 by freely inserting a pair of support bolts 17 of the holding rail 15 into the elongated holes 16a of the holder 16 in the longitudinal direction of the transported grain.
A torsion spring 18 for urging the swinging arm 12, the holder 16 and the holding rail 15 in a direction approaching the stock transfer chain 14 is supported by holding the holder 16 with the holder 16 and fixing the holding rail 15 to the holder 16. A state in which the biasing reaction point 18b is fixed to the biasing position by the locking portion 21 of the support member 11 in a state where the biasing action point 18a is locked to the swing arm 12 in a state of being fitted to the shaft 19 outside. It is provided in. In other words, the stock feed chain 14 and the holding rails 15 cooperate to hold and feed the stem of the grain culm, and the rotation of the holder 16 with respect to the swing arm 12 causes the holding rails to move relative to the stock feed chain 14. 15 is configured to be able to cope with the change in the amount of the transported grain culm, and the position of the holding rail 15 with respect to the stock transport chain 14 can be adjusted in the perspective direction and the transported grain culm longitudinal direction by operating the nut 20. I have.

The opening 11a of the support member 11 forming the engaging portion 21 is locked by the torsion spring 18 in order to release the clamping jam by transporting the holding rail 15 away from the stock transfer chain 14. Opening 1
1a torsion spring 1 protruding outside of support member 11
8 is formed on an operation lever 18c for engaging and disengaging the torsion spring 18 with respect to the locking portion 21. That is, when a grain stem is clogged between the stock transfer chain 14 and the holding rail 15, the operating lever 18c is operated to release the torsion spring 18 from the locking portion 21, and the holding rail 15 is moved. The torsion spring 18 is swung in the direction away from the torsion spring 14 and the torsion spring 18 is fixed by the locking portion 21 after the clogging is released.

An engine stop sensor 23 such as a limit switch is mounted on a sensor holder 22 rotatably mounted on a support shaft 19, and a detection piece 24 for the sensor 23 is provided.
Are attached to the support shaft 19 so as to be rotatable integrally. That is, in a state where the operation lever 18c is passed through the lever locking hole 22a of the sensor holder 22 and the torsion spring 18 is fixed by the locking portion 21, the clamping rail 15 is moved from the stock transport chain 14 due to the grain clogging. When the distance is longer than the set distance,
4, the adjustment bolt 24a comes into contact with the sensor 23, and the information from the sensor 23 activates the engine stop device.
The configuration is such that trouble in the transport system due to clogging can be reliably prevented. Then, the torsion spring 18 is connected to the locking portion 21.
When the holding rail 15 is detached from the stock transfer chain 14, the operating lever 18a moves the sensor holder 2
2 is integrally rotated so as not to come into contact with the detection piece 24, the engine stop device is maintained in a non-operating state, and the clogging can be released using the driving force of the transport system.

As shown in FIG.
Of a spring wire rod facing the end portion of the rail 25
Is attached to a holder 26 attached to the rear end side of the holding rail 15 in a state of being disposed between the holding rail 15 and the feed chain 9 so as to facilitate the transfer of the grain stalk to the feed chain 9. .

As shown in FIGS. 4 and 6, a switch type clogging alarm sensor 27 for detecting an increase in the amount of grain transported by the stock transport chain 14 is held by the holder 16 of the holding rail 15.
And guides 28a and 28b for restricting the movement of the extension portion 25a of the clamping rail rod 25 other than in the longitudinal direction by extending the clamping rail rod 25 to the clogging alarm sensor 27 by reversing bending and extension of the free end side. The clamping rail rod 25 is attached to the holder 26 of the clamping rail rod 25 while acting on the intermediate part of the extension part 25a, and is attached to the holder 16 of the clamping rail 15 while acting on the tip part of the extension part 25a. The switch button 27b of the clogging alarm sensor 27 is caused by the swing of the switch lever 27a due to the tip pressing force of the extension portion 25a accompanying the movement in the direction away from the stock carrier chain 14.
Is pressed so that the alarm sensor 27 and the tip of the extension 25a are disposed relative to each other. Here,
The shape of the lever rod 25 which is inverted and bent, and
Restricts the movement of the extension 25a of the shaft 25 in a direction other than the longitudinal direction.
Guides 28a and 28b and clogging alarm sensor
27 indicates the movement of the holding rail rod 25 in the separating direction,
The extension 25a is converted into a change in position in the longitudinal direction and detected.
And a mechanism to increase the amount of cereal stems
This constitutes detection means for detecting . That is, since the clamping force is considerably weaker than the clamping rail 15, the clamping rail rod 25 having a large movement amount is clogged and the alarm sensor 27 detects it in spite of the increase in the transported culm amount of the stock transport chain 14. An increase in the amount of the transported culm of the stock transport chain 14 is detected by the clogging alarm sensor 27 with high sensitivity, and an appropriate alarm is issued. And the holding rail 25
With the movement in the direction away from the stock carrier chain 14, the tip of the extension portion 25a presses the switch-type clogging alarm sensor 27 to make the clogging alarm sensor 27 an inexpensive switch-type and a soft switch. The clogging alarm sensor 27 can be reliably operated with sufficient force while the switch is operated by the holding rail 25.
Further, the extension 25a is extended to the clogging alarm sensor 27 attached to the holder 16 of the holding rail 15, and the wiring of the clogging alarm sensor 27 is fixed to the swinging arm 12, the mounting frame 13, and the like, away from the transported grain culm. It is configured so that it can be installed without any trouble due to catching along. As shown in FIGS. 1 and 4, a sheet 30 for receiving cereals is stretched between the stock-holding / conveying device 8 and the tip-locking / conveying device 10 and the entrance plate 29 of the threshing device 7 to weaken the cereals. A leaf spring holding member 31 that is pressed against the sheet 30 by elastic force is provided in a cantilever shape in the rearward direction, and the short culm when the grain culm is supplied to the feed chain 9 is prevented by the weak clamping action of the sheet 30 and the holding member 31. It is configured to do so.

[Other Embodiment] The engine may be automatically stopped based on information from the clogging alarm sensor 27, and the engine stop sensor 23 for detecting the holding rail 15 may be omitted. In the present invention, the type of the clogging alarm sensor 27 can be appropriately selected from well-known types such as a contact type and a non-contact type, and the arrangement of the clogging alarm sensor 27 can be appropriately changed. Sensor 27 for detecting a jam in the state of detecting an increase in the amount of cereal culm of the original transport chain 14 based on the amount of movement in the direction away from the original transport chain 14
A good if installed.

In the claims, reference numerals are provided for convenience of comparison with the drawings, but the present invention is not limited to the configuration shown in the attached drawings.

[Brief description of the drawings]

FIG. 1 is a side view of the front of the combine.

FIG. 2 is a longitudinal rear view of a holding rail mounting portion.

FIG. 3 is an exploded perspective view of a holding rail mounting portion.

FIG. 4 is a schematic plan view of a grain culm transport unit.

FIG. 5 is a longitudinal rear view of the grain culm transport unit.

FIG. 6 is a perspective view of a holding rail rod support portion.

[Explanation of symbols]

 Reference Signs List 9 feed chain 14 stock carrier chain 15 clamping rail 16 holder 25 clamping rail rod 25a extension of clamping rail rod 26 holder 27 jamming alarm sensor 28a guide 28b guide

Continued on the front page (72) Inventor Takao Sakatsuji 64 Ishizukita-cho, Sakai-shi, Osaka, Japan Inside Kubota Sakai Works, Ltd. 56) References JP-A-59-141728 (JP, U) JP-A-60-100943 (JP, U) JP-A-57-107343 (JP, U) JP 4-80648 (JP, B2) (58) ) Surveyed field (Int.Cl. ⁶ , DB name) A01D 61/00 A01D 41/12 A01D 69/00 301

Claims (3)

(57) [Claims] 1. A holding rail (15) is provided so as to be able to approach and separate from a stock transfer chain (14) and is urged in the approaching direction.
Feed chain from the stock carrier chain (14)
(9) Nipping lay made of spring wire for grain culm delivery
The holding rod (25) extends rearward from the rear end of the holding rail (15) in a cantilever manner, and based on the amount of movement of the holding rail (25) in the direction away from the stock transfer chain (14). A clogging alarm sensor (27) is installed to detect an increase in the transported grain culm of the stock transport chain (14).
Then, the holding rail (25) is extended rearwardly in a cantilever shape.
In the state where the free end side extension part (25a) of the projection part faces forward.
The clamping rail
Extend the free end of (25) to the alarm sensor (27).
Culms transport unit of are out combine. The holding rail (15) is connected to a stock transfer chain.
(14) It is urged in the approach direction so that it can approach and separate freely.
To the stock carrier chain (14).
Feed chain from the stock carrier chain (14)
(9) Nipping lay made of spring wire for grain culm delivery
The lever (25) backward from the rear end of the clamping rail (15).
Extending in a cantilever shape, and
Based on the amount of movement away from the stock transfer chain (14)
To increase the amount of cereal culm transported by the original transport chain (14).
Conveyor grain stalk transport with detection means installed
Part, wherein the detecting means is provided for separating the holding rail rod (25) from the distance.
In the direction of movement of the extension rail end (25).
Machine that converts to position change in the longitudinal direction on the side and detects it
Combine grain culm transporter composed of trusses. 3. The grain culm conveying section of a combine according to claim 2 , wherein the extension (25a) of the holding rail (25), which is inverted and bent at the free end side, is restricted from moving in a direction other than the longitudinal direction. The guides (28a) and (28b) are applied to the holder (26) of the clamping rail (25) while acting on the intermediate portion of the extension (25a), and the tip of the extension (25a). Attached to the holders (16) while acting on the parts,
The stock transfer chain (1) of the holding rail (25)
4) The extending portion (25a) accompanying the movement in the direction away from
The grain stalk transporter of the combine, wherein the clogging alarm sensor (27) and the tip of the extending portion (25a) are disposed relatively to each other in a state where the clogging alarm sensor (27) is operated by the tip pressing force.