JP2005102593A - Threshing apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To heighten the degree of freedom of arrangement of a driving structure and to improve the maintenance when opening and closing an upper frame body covering the upper part of a threshing chamber by the driving of an actuator. <P>SOLUTION: The driving structure 34 is arranged in the side direction of the threshing chamber 12 and at the vicinity of a turning fulcrum shaft 26 when opening and closing the upper frame body 25 by a driving force of the driving structure 34, in a combine harvester 1 (threshing apparatus) having the upper frame body 25 at least for covering the upper part of the threshing chamber 12, and constituted so that the upper frame body 25 may be freely opened and closed by using the turning fulcrum shaft 26 present along one side of the frame body 25 as a fulcrum. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a threshing device that opens and closes an upper frame with the power of an actuator.

  There is known a threshing device in which an upper frame covering at least the upper part of a handling chamber is configured to be openable and closable with a pivot fulcrum shaft along one side thereof as a fulcrum. In this type of threshing device, although the opening / closing operation force of the upper frame is usually reduced by the gas spring, it is sometimes difficult to perform the opening / closing operation because the upper frame needs to be lifted high during opening / closing.

Therefore, a drive mechanism that opens and closes the upper frame with the power of the actuator has been proposed (for example, see Patent Document 1). According to such a thing, since an upper frame can be opened and closed substantially automatically, even if it is a large sized model, it becomes possible to open and close an upper frame easily.
JP 2001-190136 A

However, in the thing shown by patent document 1, since the drive mechanism is attached to the rear side plate of the handling chamber, not only the attachment position is restricted in relation to the grain passage, but there is also a problem in maintainability.
Moreover, in the threshing apparatus provided with the processing cylinder in the handling chamber, since the processing cylinder is usually arranged at the position of the driving mechanism (back view) in Patent Document 1, it is difficult to arrange the driving mechanism.

The present invention has been created in order to solve these problems in view of the above circumstances, and an upper frame covering at least the upper part of the handling chamber has a pivotal fulcrum shaft along one side thereof. The threshing device is configured to be opened and closed with the fulcrum as a fulcrum, and when the threshing device is provided with a drive mechanism that opens and closes the upper frame with the power of the actuator, the drive mechanism is located on the side of the handling chamber, And it has arrange | positioned in the vicinity of the said rotation fulcrum axis | shaft. If comprised in this way, since a drive mechanism does not become a hindrance of a grain passage, the freedom degree of arrangement | positioning of a drive mechanism can be raised. And since a drive mechanism is provided outside a threshing part, the maintainability of a drive mechanism can be improved.
Further, the drive mechanism is supported by a connecting frame that connects the cereal cylinder and the operating unit frame. If comprised in this way, a drive mechanism can be firmly supported using a whipping cylinder and a driving | operation part flame | frame.
The drive mechanism is supported by a front side plate of the handling chamber. If comprised in this way, a drive mechanism can be firmly supported using the front side board of a handling chamber.

  Next, embodiments of the present invention will be described with reference to the drawings. In the drawings, 1 is a combine, and the combine 1 includes a pre-processing unit 2 that cuts off the stems, a threshing unit 3 that threshs the cut stems and selects the threshed grains, and the selected cereals. A grain tank 4 for storing grains, an auger 5 for carrying the grains in the grain tank 4 out of the machine, a waste transporting part 6 for transporting the threshed waste to the rear end of the machine, and a waste Is configured to include a post-processing unit 7 for post-processing, a driving unit 9 provided with a driver's seat 8 and the like, and a crawler type traveling unit 10.

  The threshing unit 3 includes a handling chamber 12 in which the handling cylinder 11 is installed, a processing chamber 14 in which the processing cylinder 13 is installed, a threshing feed chain 15 that conveys stems along the handling chamber 12, and an upper side of the threshing feed chain 15. And a pinch rail 16 that is arranged along the screen, a sorting chamber 17 that sorts the threshed grain, and a milling cylinder 18 that lifts and conveys the sorted grain to the grain tank 4. Mounted on the left side of the aircraft. The whipping cylinder 18 is erected along the side surface of the threshing unit 3 on the machine body center side, and conveys the selected grain to the grain tank 4 mounted on the right side of the threshing unit 3.

  At the bottom of the grain tank 4, a spiral conveyance body (not shown) is provided, and the grain in the tank is sent out to the auger 5 by driving thereof. The grain tank 4 of the present embodiment is capable of revolving and turning outward of the machine body with the vertical pipe 5a of the auger 5 as a fulcrum. Accordingly, when the grain tank 4 is retracted and rotated to the outer side of the machine body, the tank mounting position on the machine body is widely opened, and maintenance of the center part of the machine body can be performed.

  The auger 5 includes a vertical pipe 5a that is connected to the grain tank 4, and a horizontal pipe 5b that is connected to the upper end of the vertical pipe 5a so as to be able to turn and move up and down. These pipes 5a and 5b are internally provided with a spiral conveyance body (not shown), and the grain is conveyed to the tip discharge port 5c of the horizontal pipe 5b by driving thereof. At the time of non-unloading work, the horizontal pipe 5b is stored along the upper part of the machine body. An auger receiver 19 formed in a Y shape is erected at a substantially central position at the upper part of the machine body to support the horizontal pipe 5b to be stored.

  The waste transporting unit 6 receives waste at the end of the threshing feed chain 15 and holds it between a waste transporting chain 20 and a waste rail (not shown) that are vertically arranged, It is configured to transport to the post-processing unit 7. Reference numeral 21 denotes an openable / closable waste cover that covers the upper portion of the waste transport section 6.

  The driving unit 9 is covered with a cabin 22, and a driver's seat 8 and various operation tools are arranged in the internal space. The operation part frame 23 constituting the operation part 9 is integrally connected to the threshing part 3 via the central frame 24, and the auger receiver 19 described above is integrally erected on the central frame 24. ing.

  Next, a configuration characterized by the present invention will be described. In the drawing, reference numeral 25 denotes an upper frame that covers at least the upper part of the handling chamber 12, and the upper frame 25 is configured to be openable and closable about a pivot fulcrum shaft 26 along the right side thereof. 12 is opened for cleaning and inspection. The rotation fulcrum shaft 26 is fixed to the upper end portion of the right side surface of the handling chamber 12 in the front-rear direction, and supports the upper frame body 25 through a plurality of rotation arms 27 so as to be vertically rotatable. In addition, a gas spring 28 is interposed between the upper frame 25 and the threshing portion main body, and the opening / closing operation force of the upper frame 25 is reduced by the biasing force. The upper frame body 25 of the present embodiment supports the handling cylinder 11 and the pinching rail 16 and is connected to the waste transporting chain 20 and the waste cover 21. The handling cylinder 11, the clamping rail 16, the waste transporting chain 20, and the waste cover 21 can be raised together, but it goes without saying that the present invention is not limited to such a configuration.

  The upper frame 25 is provided with an opening lock mechanism 29 for locking the opening operation. The open lock mechanism 29 includes a rotatable hook 31 that engages with and disengages from a lock pin 30 on the threshing portion main body side, and a vertically unlockable lock release lever that is provided on the distal end side (left side) of the upper frame 25. 32 and a link 33 for connecting the lock release lever 32 and the hook 31 to each other. That is, when the upper frame 25 is in a fully closed state, the hook 31 is engaged with the lock pin 30 so that the opening of the upper frame 25 is locked. In this state, when the lock release lever 32 is turned upward, the hook 31 is detached from the lock pin 30 in conjunction with it, and the opening operation of the upper frame 25 is allowed. When the opened upper frame 25 is fully closed, the hook 31 automatically engages with the lock pin 30 and the opening of the upper frame 25 is locked.

  The threshing unit 3 includes a drive mechanism 34 that opens and closes the upper frame 25 with the power of the electric motor M (actuator). The drive mechanism 34 is disposed on the right side of the handling chamber 12 and in the vicinity of the rotation fulcrum shaft 26. Thereby, it becomes possible to avoid the drive mechanism 34 from interfering with the grain passage and to increase the degree of freedom of arrangement of the drive mechanism 34. Moreover, if it is set as the above arrangement | positioning structures, since the drive mechanism 34 can be provided in the outer surface part of the threshing part 3, the maintenance of the drive mechanism 34 becomes easy. Moreover, in this embodiment, since the drive mechanism 34 is arrange | positioned in the right front side of the handling chamber 12 avoiding the position of the grain tank 4, the shape change of the grain tank 4 is not required, and the conventional tank Capacity can be maintained.

  The drive mechanism 34 includes a bracket 36 that is supported by a connecting frame 35, which will be described later, so as to be rotatable up and down, an electric motor M provided on the bracket 36, an expansion cylinder 37 that expands and contracts according to the driving of the electric motor M, A connecting pin 38 provided at the distal end of the telescopic cylinder 37, a pair of springs 39 for urging the telescopic cylinder 37 in the contracting direction (upper frame body opening drive direction), and the most contracted and fully extended positions of the telescopic cylinder 37 It comprises a pair of limit switches 40 to detect. On the other hand, on the upper frame body 25 side, a drive arm 41 that is rotatably supported by the rotation fulcrum shaft 26 is integrally connected, and a drive mechanism is connected to a long hole 41 a formed in the drive arm 41. 34 connecting pins 38 are connected in an insertion manner. Thereby, the upper frame 25 is connected to the drive mechanism 34, and is opened and closed according to the expansion / contraction drive.

  The long hole 41a of the drive arm 41 extends along a circular arc direction centering on the rotation fulcrum shaft 26, and allows a slight opening / closing operation of the upper frame 25 even when the drive mechanism 34 is in the fully closed drive position. . As a result, while the upper frame 25 is automatically opened and closed by the drive mechanism 34, the lock operation and the unlock operation of the release lock mechanism 29 can be manually performed. That is, when the lock release lever 32 is unlocked when the upper frame 25 is in the fully closed state, the upper frame 25 is raised by the urging force of the gas spring 28 by a stroke necessary for unlocking, and then the drive mechanism 34 is moved. The upper frame 25 can be opened by On the other hand, when the upper frame body 25 is closed by the drive mechanism 34, the upper frame body 25 is stopped without leaving the above-mentioned stroke, and the locking operation can be manually performed. With this configuration, not only a complicated mechanism for automatically unlocking the unlocking mechanism 29 is unnecessary, but also the unlocking mechanism 29 can be securely locked and unlocked while manually checking. Can do.

  The drive arm 41 of the present embodiment is divided into a base end side 41b fixed to the upper frame 25 side and a tip end side 41c connected to the drive mechanism 34, and these are connected by bolts 42 so as to be integrated. It is configured. Therefore, when the drive mechanism 34 breaks down, the upper frame 25 can be manually opened by removing the bolt 42 and separating the distal end side 41c of the drive arm 41 from the proximal end side 41b. Become.

  The connecting frame 35 described above is provided so as to connect the cereal cylinder 18 and the central frame 24 (operating unit frame 23). When the driving mechanism 34 is supported by the connection frame 35, the driving mechanism 34 can be firmly supported by using the cereal cylinder 18 or the central frame 24 (the driving unit frame 23). The connecting frame 35 is also connected to the front plate frame 44 (front plate 12 a) of the handling chamber 12 through the reinforcing frame 43. Thereby, it becomes possible to support the drive mechanism 34 more firmly using the front plate frame 44 (front plate 12a) of the handling chamber 12.

  In addition, an opening / closing operation switch 45 for driving the drive mechanism 34 is provided on the outer side surface portion of the threshing portion 3. In the present embodiment, an opening / closing operation switch 45 is provided on a feed chain frame (not shown), and is operated via a notch 46a of a side cover 46 that covers the feed chain frame. This eliminates the need for a support member for the opening / closing operation switch 45 and simplifies the configuration.

  In the combine 1 of the present embodiment configured as described, the threshing unit 3 has an upper frame body 25 that covers at least the upper part of the handling chamber 12, and rotates the upper frame body 25 along one side thereof. The fulcrum shaft 26 is configured to be openable and closable with the fulcrum shaft 26 as a fulcrum, and the drive mechanism 34 is disposed on the side of the handling chamber 12 and in the vicinity of the rotation fulcrum shaft 26 when opening and closing with the driving force of the drive mechanism 34. Therefore, it is possible to avoid the drive mechanism 34 from interfering with the cereal passage and to increase the degree of freedom of arrangement of the drive mechanism 34. And since the drive mechanism 34 is provided in the exterior of the threshing part 3, the maintainability of the drive mechanism 34 can also be improved.

  Moreover, since the drive mechanism 34 is supported by the connection frame 35 which connects the cereal cylinder 18 and the center frame 24 (operating part frame 23), the threshing cylinder 18 and the central frame 24 (operating part frame 23) are used. Thus, the drive mechanism 34 can be firmly supported. Further, since the drive mechanism 34 is also supported by the front plate frame 44 (front plate 12a) of the handling chamber 12, the support of the drive mechanism 34 can be further strengthened.

It is a left view of a combine. It is a top view of a combine. It is a perspective view (front view) which shows arrangement | positioning and a support structure of a drive mechanism. It is a perspective view (back view) which shows arrangement | positioning and a support structure of a drive mechanism. It is a perspective view of a drive mechanism. It is a principal part rear view of the threshing part which shows the state (open closed state) which open-locked the upper frame. It is a principal part rear view of the threshing part which shows the state which released | released the open lock of the upper frame (reverse open state). It is a principal part rear view of the threshing part which shows the state which fully opened the upper frame.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Combine 3 Threshing part 4 Grain tank 9 Operation part 11 Handling cylinder 12 Handling chamber 12a Front side board 18 Flouring cylinder 23 Operation part frame 24 Center frame 25 Upper frame body 26 Turning fulcrum shaft 28 Gas spring 29 Opening lock mechanism 32 Lock Release lever 34 Drive mechanism 35 Connecting frame 41 Drive arm 43 Reinforcement frame 44 Front plate frame 45 Opening / closing operation switch M Electric motor

Claims (3)

A threshing device in which an upper frame covering at least the upper part of the handling chamber is configured to be openable and closable with a rotation fulcrum shaft along one side thereof as a fulcrum,
In providing the threshing device with a drive mechanism for opening and closing the upper frame with the power of an actuator, the drive mechanism is disposed on the side of the handling chamber and in the vicinity of the pivot fulcrum shaft. Threshing device.   The threshing apparatus according to claim 1, wherein the drive mechanism is supported by a connecting frame that connects the whipping cylinder and the operating unit frame.   The threshing apparatus according to claim 1 or 2, wherein the driving mechanism is supported by a front side plate of the handling chamber.

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