JPH07303415A - Locking mechanism of threshing chamber in threshing device - Google Patents

Abstract

PURPOSE:To surely and strongly lock a movable frame to a fixed frame on a threshing work so as not to cancel the locking state even under the actions of a threshing load, etc., in the threshing device made by dividing a threshing chamber into the fixed frame and the movable frame, disposing a rotation support point shaft for the movable frame at the upper end of the fixed frame on the side opposite to the side of a feed chain, and disposing the movable frame pivotally supporting a threshing cylinder in a vertically openable or closable state. CONSTITUTION:A locking tool 41 interlocked with an operation lever 38 disposed on the side of a feed chain is vertically movably and pivotally supported on an openable or closable and movable frame 15, and a fixed plate 43 on which a hooking fitting 44 for engaging or disengaging with the locking tool 41 is projected from the side opposite to the side of the feed chain toward the locking tool 41 is disposed on a fixed frame 14. A virtual line (A) formed between a locking position at which the locking tool 41 is caught with the hooking fitting 44, and a rotation support shaft 16 for the movable frame 15 is arranged in an approximately orthogonal figuration to a virtual line (B) formed between the locking position and the pivotal support point 41a of the locking tool 41.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lock mechanism for a handling chamber in a threshing device in which a movable frame supporting a handling barrel can be opened and closed with respect to a fixed frame.

[0002]

2. Description of the Related Art Conventionally, in a thresher mounted on a combine or the like, in order to make it easy to clean the inside of the handling chamber when the receiving net is clogged, the handling barrel is fixed with a movable frame. It is divided into a body and a rotary fulcrum shaft of the movable frame body is provided at the upper end of the fixed frame body on the side opposite to the feed chain, so that the movable frame body supporting the handle cylinder can be opened and closed vertically together with the handle cylinder. It is known that a lock device is provided for fixing the movable frame to the fixed frame during normal threshing work.

[0003]

However, in such a threshing apparatus, the handling port extending from the grain culm carry-in port provided on the front side plate of the handling room to the straw discharge port provided on the rear side plate is along the feed chain. Since it is opened, the movable frame body that opens and closes up and down is supported in a cantilevered manner by the rotation fulcrum shaft provided on the opposite side of the feed chain. Therefore, during the threshing work, even if the movable frame is locked by the lock device, the front and rear side plates of the movable frame may be twisted or shaken due to the threshing load or the rotating action of the handling cylinder. There was the inconvenience that the locked state was easily released due to the application of irregular force. The present invention was created in order to solve the above problems, and even a movable frame supported in a cantilever manner can be securely and firmly locked to a fixed frame, and is not It is an object of the present invention to provide a lock mechanism of a handling chamber in a threshing device which does not come out of a locked state due to a regular force.

[0004]

In order to solve the above-mentioned problems, the technical means taken by the present invention is to divide the handling chamber into a fixed frame body and a movable frame body, which is opposite to the feed chain of the fixed frame body. In the threshing device in which the movable fulcrum shaft of the movable frame body is provided at the upper end of the side, and the movable frame body supporting the handling cylinder can be opened and closed vertically,
On the movable frame body, a lock tool interlocking with an operation lever provided on the feed chain side is pivotally supported in a vertically rotatable manner, and a fixed frame body is provided with a hooking tool for engaging and disengaging the lock tool.
An imaginary line connecting the lock position where the locking tool is rotationally locked to the hook and the rotary fulcrum shaft of the movable frame is provided on the fixed plate that projects from the opposite side of the feed chain toward the locking tool. It is characterized in that it is substantially orthogonal to an imaginary line connecting the pivot point of the lock and the lock position.

[0005]

Therefore, according to the present invention, when the threshing work is performed, if the operation lever provided on the feed chain side is operated, the lock tool pivotally supported on the movable frame body is interlocked with the operation lever so that the fixed frame body is hooked. The metal frame is pivotally locked to the metal fitting, and the movable frame body, which is provided with a pivot shaft on the side opposite to the feed chain, and which can be opened and closed vertically is locked. Moreover, since the hooking metal fitting for locking the locking tool is provided on the fixing plate projecting from the fixing frame toward the locking tool, the openable and closable movable frame can be effectively locked near the handling barrel axis. . An imaginary line connecting the lock position where the lock tool is rotationally locked to the hook metal and the rotation fulcrum shaft of the movable frame is substantially orthogonal to the imaginary line connecting the pivot point of the lock tool and the lock position. Therefore, even if a threshing load or the like acts on the movable frame, a linear force from the lock position to the pivot point always acts on the locking device, and the locking device becomes unstable due to irregular force. It does not easily rotate and come off.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will now be described in detail with reference to the accompanying drawings. First, in FIGS. 1 and 2, 1 is a handling chamber in which a handling barrel 2 is rotatably supported, 3 is a feed chain arranged along a handling port, 4 is a gripping rail, and the feed chain is held by the feed chain 3. The harvested culm that was held by the rail 4 and supplied to the handling room 1 was subjected to threshing treatment by the rotating handling barrel 2, and the straw after threshing was installed obliquely from the transport end of the feed chain 3 toward the rear of the machine. It is carried out by the straw carrier 5,
Grains, small straw chips, etc. leak through the receiving net 6 stretched in the handling room 1 and fall onto the rocking sorting body 8 of the sorting section 7. Then, for the rocking motion of the rocking sorter 8, the karako 9 and the sirocco fan 10
The fine grain is collected in the first gutter 11 and the branch sprouts and the like are collected in the second gutter 12 and the straw dust is sucked in by the exhaust fan 13 to be rearward of the fuselage. Is discharged to.

As shown in FIGS. 3 to 5, the handling chamber 1 is divided into a fixed frame body 14 and a movable frame body 15 which can be opened and closed vertically. At the upper end of the fixed frame body 14,
On the opposite side of the feed chain 3, a fulcrum pivot shaft 16 in the front-rear direction is provided.
Are fixed, and supports 17, 18 for supporting the movable frame 15 are rotatably supported on the rotation fulcrum shaft 16. Further, on the front side plate 19 and the rear side plate 20 of the movable frame body 15, double structure portions 21 and 22 are formed in which the plate bodies 19a and 20a are opposed to each other and fixed at bent edge portions. As shown in FIG. 8, the double-structured parts 21 and 22 have front and rear side plates 19 and 20.
Is formed in a contracted shape from the lower end edge of the support fulcrum shaft 16 to the upper end thereof, and the fulcrum pipes 17a and 18a of the supports 17 and 18 are fitted into the openings a and b, respectively. By fixing, the movable frame body 15 is supported by the rotation fulcrum shaft 16 and can be opened and closed vertically with respect to the fixed frame body 14. Openings c and d are opened at the lower edges of the double structure portions 21 and 22, and the front and rear side plates 19,
20 and the plate members 19a, 20a are formed with notches e, f reaching the mounting position of the handling cylinder 2, and front and rear bearing bodies 24, 25 made of the handling cylinder metal attached to the handling cylinder shaft 23, From the openings c and d into the double structure portions 21 and 22, the handle shaft 2
3 is fitted along the notches e and f and fixed by bolts, so that the handling cylinder 2 causes the front and rear side plates 19 of the movable frame body 14,
It is pivotally supported by 20. Further, the feed chain 3 is fixed to the fixed frame body 14, and the holding rail 4 is fixed to the movable frame body 15, and the fixed chain body 14 and the movable frame body 15 are discharged vertically from the grain culvert carry-in port. A handling port 26 extending along the straw discharge port is formed along the feed chain 3.

Reference numeral 27 is a power transmission mechanism provided on the front surface of the front side plate 19, and is a transmission belt 2 suspended on a drive pulley 28.
A lower idler pulley 32, which is suspended around a handling body pulley 31 via an upper idler pulley 30 provided at the front end of the rotation fulcrum shaft 16, detours the transmission belt 29 so as not to face the handling opening 26. Are attached to the fixed frame body 14. Reference numeral 33 is a tension pulley that presses the transmission belt 29 from above, and a bell crank-shaped tension arm 34 that supports the tension pulley 33 is pivotally supported by the rotation fulcrum shaft 16. A proximal end portion of a tensioning device 35 formed of a spring connected to the tension arm 34 is fixed to a bracket 36 provided on the movable frame 15 on the feed chain 3 side.

A lock mechanism 37 for fixing the movable frame 15 to the fixed frame 14 is provided in the handling chamber 1.
That is, an operation lever 38 is pivotally supported by the bracket 36 provided on the movable frame body 15, the operation lever 38 is connected to one end of a rod 40 via a rotation link 39, and a locking device is attached to the other end of the rod 40. 41 are connected. The locking tool 41 is pivotally supported at a position in the vicinity of the handling body shaft 23 of the movable frame 15 via a pivot 41a so as to be vertically rotatable.
A hook portion 42 that faces upward is formed at the tip.
On the other hand, the fixed frame body 14 is provided with a fixed plate 43 projecting from the opposite side of the feed chain 3 toward the lock tool 41, and the fixed plate 43 is provided with a hook metal fitting 44 for engaging and disengaging the hook portion 42 of the lock tool 41. As a result, the lock tool 41 locks the movable frame body 15 in the vicinity of the handle shaft 23 in conjunction with the operation lever 38, and shortens the length from the hook metal fitting 44 to the pivot point 41a of the lock tool 41. The rotation error when the locking tool 41 is locked to the hook metal fitting 44 is made as small as possible. Then, as shown in FIG.
The lock position of the lock tool 41 locked to the No. 4 and the movable frame body 15
The virtual line (i) that connects the rotation fulcrum shaft 16 of the is substantially orthogonal to the virtual line (b) that connects the pivotal fulcrum 41a of the lock 41 and the lock position, and the threshing load or the like can be moved from the handling cylinder 2. Even if it acts on the frame 15, a linear force is always applied to the lock 41 from the lock position to the pivot 41a. The lock mechanisms 37 are provided on both front and rear sides of the handling room 1, and the operation levers 38 project from the cover body 45 of the movable frame body 15 to the outside of the body above the feed chain 3 to allow the movable frame body 15 to move. The grain culm loading side and the straw unloading side can be locked separately.

The straw carrier 5 is constructed as follows. That is, a straw gear case 47 is attached to the rear surface of the rear plate 20 of the movable frame 15 via a bracket 46, and is supported by the sprocket 48 provided on the straw gear case 47 and the tip of the straw frame 49. The straw chain 51 is suspended between the driven sprocket 50 and the driven sprocket 50. Then, the support pipe 52 provided on the base end side of the straw frame 49 is fitted to the fulcrum shaft 53 provided on the straw gear case 47, so that the entire straw conveyor 5 obliquely installed rearward is driven by the drive sprocket. It is rotatable upward from the vicinity of 48. In addition, the straw gear case 47 includes a drive pulley 54 provided at the rear end of the handle shaft 23 and the straw gear case 4
Power is transmitted by a transmission belt suspended to the input pulley 55 of No. 7, and the sprocket 48 is rotationally driven.

Reference numeral 56 denotes a reinforcing stay of the movable frame body 15. The base end of the reinforcing stay 56 is fixed to the bracket 46 together with the straw discharging gear case 47. The tip of the reinforcing stay 56 extending in parallel to the straw conveyor 5 on the lower side of the conveyance is rotatably supported by the extension portion 57 of the rotation fulcrum shaft 16, and is movable up and down. The frame 15 is prevented from swinging and the straw gear case 47 is prevented from being displaced.

Further, the straw carrier 5 includes a movable frame 1
A fixing fitting 58 is provided which is fixed when the work 5 is closed. The fixing metal fitting 58 is provided at a substantially central portion of the straw conveyor 5 and at a position facing the extension portion 57 of the rotation fulcrum shaft 16, and a receiving tool 59 having a concave surface for receiving the fixing metal fitting 58. , 59 are fixed to the extension portion 57. A rotary shaft 60 is pivotally supported by the receiving members 59, 59,
A stopper hook 61 is provided on the rotary shaft 60 so as to engage with the fixing member 58 from above. As shown in FIG. 6, the end of the rotary shaft 60 on the movable frame 15 side is linked to the lock tool 41 via the rotary arm 62 and the rod 63, and the lock is operated by operating the operation lever 38. Mechanism 37
Locks and releases the movable frame body 15, and at the same time, the stop hook 61 is engaged with and disengaged from the fixing metal fitting 58 to fix the straw carrier 5.
It is supposed to be released.

A frame 64 is continuously provided on the extension portion 57 of the rotation fulcrum shaft 16 from substantially the center of the straw conveyor 5 toward the end of the conveyor, and the straw conveyor is provided at the front end of the frame 64. Sliding rail 6 slidingly contacting a stopper 65 provided on the body 5.
6 is provided to support the tip portion of the straw carrier 5 from below. Further, the front end side of the frame 65 is connected to the machine body frame via support frames 67, 68, 69. Reference numeral 70 is a gas cylinder for facilitating the opening and closing of the movable frame 15, 71 is a handle, and 72 is a fixing member for the rotary fulcrum shaft 16.

In the above structure, when cleaning the inside of the handling chamber 1, the movable frame 15 can be opened upward together with the handling barrel 2 by releasing the lock mechanism 37 by operating the operating lever 38. Therefore, the inside of the handling room 1 can be easily cleaned. At this time, since the fixation of the straw carrier 5 by the stop hook 61 is also released at the same time, as the movable frame 15 is opened, only the base end side of the straw carrier 5 moves upward as shown in FIG. As shown in FIG. 7, it is possible to move only the tip side of the straw carrier 5 with the movable frame body 15 closed, so that the straw carrier 5 and the feed chain 3 are clogged. It is possible to easily remove clogging of the straw cutter (not shown).

And in performing the usual threshing work,
First, when the movable frame 15 is closed, and then the operation lever 38 is operated, the locking tool 41 that rotates in conjunction with this is locked to the hook metal fitting 44 provided on the fixed plate 43 to handle the movable frame 15. Since it is locked at a position near the shaft 23, the rotation fulcrum shaft 16
The movable frame body 15, which is opened and closed by means of, can be effectively locked at a position distant from the rotation fulcrum shaft 16, and the rotation error of the lock tool 41 is made as small as possible. The movable frame 15 can be securely and firmly locked by the lock 41. Even if a threshing load or the like acts on the movable frame body 15 from the handling cylinder 2, a linear force directed from the lock position to the pivot 41a always acts on the lock tool 41, so that the lock tool 41 has an irregular force. It does not come off from the hook metal fitting 44 by being rotated by.

Double structure parts 21 and 22 are formed on the front and rear side plates 19 and 20 of the movable frame body 15.
1, 22 support members 17 pivotally supported by a pivot shaft 16.
Since the fulcrum pipes 17a and 18a of 18 and the bearing bodies 24 and 25 of the handling barrel shaft 23 are integrally fitted and fixed to form a strength member, the front and rear side plates 19 and 20 can have a strong structure. In combination with the frame-shake preventing action of the reinforcing stay 56, it is possible to prevent the movable frame 15 from being twisted or shaken due to the threshing load or the rotating action of the handling cylinder 2. On the other hand, when installing the handle cylinder 2,
With the handling cylinder 2, the handling cylinder shaft 23, the bearing bodies 24, 25, etc. assembled together, the bearing bodies 24, 25 are inserted into the double structure portions 21, 22 through the openings c, d of the double structure portions 21, 22. Since it can be fitted in and fixed to, the mounting work of the handling cylinder 2 can be easily performed.

[0017]

In summary, according to the present invention, the handling chamber is divided into a fixed frame body and a movable frame body, and a rotary fulcrum shaft of the movable frame body is provided at the upper end of the fixed frame body on the side opposite to the feed chain. In the threshing device capable of opening and closing a movable frame body that supports the handling barrel in the vertical direction, a lock tool that interlocks with an operation lever provided on the feed chain side is pivotally supported in the movable frame body in a vertically rotatable manner. At the same time, a hook metal fitting for engaging and disengaging the lock fitting is provided on the fixed frame body on a fixing plate projecting from the opposite side of the feed chain toward the lock fitting, and the lock fitting is rotationally locked to the hook fitting. Since the virtual line connecting the lock position and the rotation fulcrum axis of the movable frame is made substantially orthogonal to the virtual line connecting the pivot fulcrum of the lock and the lock position, the movable frame is opened and closed up and down. Although the handling room can be easily cleaned, the operation lever can be used during threshing work. The can lock member only be operated from the feed chain side is sealed pivot engaged to the hook bracket of the fixed frame, easy to lock the movable frame body. Moreover, since the hooking metal is provided on the fixed plate that is projected from the side opposite to the feed chain toward the lock tool, the movable frame can be securely and firmly locked in the vicinity of the handling barrel shaft. The virtual line connecting the lock position of the lock tool and the rotation fulcrum shaft of the movable frame is substantially orthogonal to the virtual line connecting the pivotal fulcrum of the lock tool and the lock position, so that the threshing load etc. can be moved. Even if it acts on the frame, a linear force from the lock position to the pivot point always acts on the lock tool, so that the lock tool cannot be carelessly rotated to release the locked state. Without this, threshing work can be performed smoothly.

[Brief description of drawings]

FIG. 1 is an overall perspective view of a threshing device.

FIG. 2 is a vertical sectional side view of the same.

FIG. 3 is a plan view of the same.

FIG. 4 is a front view of the same.

FIG. 5 is a rear view of the same.

FIG. 6 is a perspective view showing a state where a movable frame body is opened.

FIG. 7 is a perspective view of a state in which the tip end side of the straw carrier is moved upward.

FIG. 8 is a front view of the double structure portion.

FIG. 9 is an enlarged view of a main part.

[Explanation of symbols]

 1 Handling Room 2 Handling Body 3 Feed Chain 14 Fixed Frame 15 Movable Frame 38 Operation Lever 41 Locking Tool 41a Support 43 Fixing Plate 44 Hooking Metal

Claims (1)

[Claims] 1. A handling chamber is divided into a fixed frame body and a movable frame body,
In a threshing device in which a rotary fulcrum shaft of a movable frame is provided at an upper end portion of the fixed frame opposite to the feed chain, and the movable frame supporting the handling barrel can be opened and closed up and down, the movable frame includes ,
A lock tool that interlocks with an operation lever provided on the feed chain side is pivotally supported in a vertically rotatable manner, and a hook metal fitting for engaging and disengaging the lock tool is fixed to a fixed frame body from the opposite side of the feed chain to the lock tool. A virtual line connecting the lock position where the locking tool is rotationally locked to the hook and the rotation fulcrum shaft of the movable frame, is provided on the fixed plate that is protruded. A lock mechanism for a handling room in a threshing device, which is substantially orthogonal to a connecting virtual line.