JPH0889067A - Receiving net attaching/detaching device in thresher - Google Patents

Abstract

PURPOSE: To provide the subject device designed to smoothly conduct the maintenance operations inside a threshing chamber by easily attaching/detaching a receiving net. CONSTITUTION: A threshing chamber case 10 internally furnished with a threshing cylinder in a revolvable way is mounted on a lower part case 11 in a vertically revolvable fashion, and a fixing mechanism 5 to fix/release a receiving net 3 to/from the lower part case 11 is linkingly interlocked via a link member so as to make changeover actuations between fixed and released modes concomitantly with the vertical revolution of the threshing chamber case 10. And the Joint end between threshing port side net 3a and deep side net 3b is pressed with the relevant member 51 of the mechanism 5 to make a push contact of fitting parts 37, 38 on the other end to effect positioning and fixing of the fitting parts onto the lower part case 11.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a threshing machine net attachment / detachment device which can be mounted on a combine harvester, a moving threshing machine or the like.

[0002]

2. Description of the Related Art Conventionally, in a thresher mounted on a combine or the like, as disclosed in, for example, Japanese Utility Model Publication No. 6-27071, a handling barrel is rotatably supported on front and rear side plates of a handling room case. Along with this, the handling room case can be pivoted up and down around a pivot shaft installed on the lower case, and maintenance and inspection of the handling room can be performed with the handling room case moved upward to open the handling room. It is known that the receiving network is configured to be easily attached and detached. According to the structure of the above publication, the receiving net is divided into a net on the handling port side close to the handling port and a net on the back side of the handling room, and both nets are placed along a guide rail formed in the handling chamber. In the inserted state, the handling side net is joined by joining the joint ends of both nets in the state that the mounting pins protruding from the handling side net end are inserted into the mounting holes drilled in the machine body. The engaging groove formed at the joint end of the mesh is engaged with the fixing pin fixed to the guide rail, and the upper end of the other end of the inner mesh is pressed through the straw cutting blade support base when the lower movement of the handling chamber case is closed. By doing so, both nets are positioned and fixed.

[0003]

However, according to the above configuration, the handling side net and the back side net are inserted and guided by the guide rails.
Positioning of both joints is performed by operating the engaging groove formed in the handling side net to engage the fixing pin and pressing the upper end of the back side net with the handling chamber case. Therefore, there is a drawback that accurate joining becomes difficult when debris adheres firmly to the guide rail or the receiving net is deformed during long-term use. There is a problem that the positioning and fixing work with the back side net is complicated, and the work for attaching and detaching the receiving net becomes difficult. Also,
When the threshing work is performed, the handle side net is fixed because it is pressed through the back side net with the mounting pin inserted into the mounting hole and the pressing force is not transmitted sufficiently and the fixing is not performed sufficiently. There is a problem that the receiving net vibrates vertically.

[0004]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems of the threshing machine according to the present invention, a receiving net attaching / detaching device of the present invention divides the receiving net into a plurality of inlet side nets and back side nets, Adjacent joint ends of both nets are continuously provided via a fixing mechanism having a pressing member capable of releasing pressure, and the pressing ends press the joint ends to each other, so that the handling port side net and the back side net An attachment portion formed at the other end of the is pressed against a support frame formed on the machine body so as to be removably positioned and fixed. Further, by forming the pressing member of the fixing mechanism as a roller, forming a regulation surface on the lower surface of the outer periphery of the roller, and pressing the regulation surface against the contact surface formed at the joint end of the handling side net and the back side net. It is characterized in that the two nets are prevented from being lifted up.

Further, in a thresher in which a handling chamber case in which a handling barrel is rotatably mounted on an inner shaft is rotatably provided in a lower case with a rotation shaft serving as a rotation fulcrum, a receiving net is fixed to the lower case. By connecting the fixing mechanism through a connecting member that is activated when the handling chamber case is opened and closed, the receiving net is fixed when the handling chamber case is moved downward and when the handling chamber case is moved upward. Characterized in that it is operated in a linked manner so as to release the fixed state, and a connecting lever that is operated with the vertical opening and closing movement of the handling chamber case, and an operating lever capable of independently operating the pressing member of the fixing mechanism, It is characterized in that it is composed of a cord or the like from the handling room case connected to the operation lever.

[0006]

With the above configuration, the handling chamber case 10 is attached to the rotary shaft 1.
When the upper part of the handling chamber 2 is opened upward by opening about 2, it is possible to open the upper part of the handling chamber 2, and the pressing member 51 of the fixing mechanism 5 is actuated in the fixing releasing direction via the connecting member 65, and the handling port side net 3a
Also, the back side net 3b can be set in a free state and easily taken out of the machine, and maintenance work of both the nets 3a and 3b and the handling room 2 can be easily performed. Also, both nets 3a,
In the mounting and assembling of 3b, the pressing member 51 is operated in the fixing direction via the connecting member 65 by moving the handling chamber case 10 downward with the joint frames 35 and 36 temporarily held by the fixing mechanism 5. , The handling side net 3a and the back side net 3b can be pressed and positioned and fixed. At this time, the handling side network 3
a and the back side net 3b are firmly fixed by the attachment frames 37 and 38 being pressed against the corresponding support frames 17 and 18, and the joint frames 35 and 36 are in a stable joint state via the fixing mechanism 5. Therefore, the upward movement of the pressing member 51 is fixed by the restricting surface 51a, and the floating and vibration of the receiving net 3 can be prevented.

[0007]

Embodiments of the present invention will be described with reference to the drawings. In FIG. 1, reference numeral 1 denotes a thresher that can be mounted on a traveling machine such as a combine, and is disposed behind a mowing unit (not shown) provided in the front of the machine to handle the mowed culm in a handling room 2. 20 is continuously transferred and conveyed by a feed chain 21 installed alongside 20
After threshing treatment by rotation of the handling cylinder 2a pivotally supported inside,
The grains and impurities that have leaked from the net 3 are collected by swinging and sorting by the swing sorting body 4, and at the same time, the dust such as cut straws and scraps is discharged to the outside of the machine. It is configured to perform threshing operations.

The threshing machine 1 further includes a handling room case in which an inlet side plate 22 and an outlet side plate (23) at the front and rear of the handling chamber that rotatably support the handling barrel 2a are integrally framed by a top plate portion 24. 10 and a box-shaped lower case 11 in which a curved receiving net 3 is stretched along the rotational trajectory of the handling cylinder 2a, and a sorting section including a swinging sorting body 4 and the like is installed below it. are doing. Then, as shown in FIG. 1, the rotating shaft laterally provided above the lower case 11 so that the handling chamber case 10 is substantially parallel to the rotation axis P of the handling barrel 2a in the direction opposite to the handling port 20 side. 12 is provided so as to be vertically movable via a mounting arm 13, and a fixture (not shown) having an appropriate structure is released to move upward from the threshing work posture shown by the solid line to the maintenance work posture shown by the dotted line. By exposing the inside of 2 and opening up the net 3 greatly, removal work such as threshing or clogging of debris such as straw and wrapping of grain culm around the handling barrel 3, and a net with a configuration described later The attachment / detachment work of 3 can be performed easily and efficiently.

The receiving net 3 is formed in a two-part shape of a handle side net 3a and a back side net 3b. The nets 3a and 3b are each provided with a crimp net 31 on a square net frame 30. However, a partition plate 3 is provided on the mesh surface of which an appropriate interval is provided to regulate the grain removal.
An appropriate number of 2 are erected along the rotation direction of the handling cylinder 2a. Then, downward facing L-shaped joining frames 35 and 36 are attached and formed at the joining ends 33 of the handling port side nets 3a and the back side nets 3b facing each other, and the joining frames 35 and 36 will be described later. In the state of being supported by the fixing mechanism 5, the mounting frame 37 formed at the other end of the handling-side net 3a has a cross-sectional shape formed at the end of the guide plate 15 extending downward from the side wall of the lower case 11. It is fitted in the character-shaped support frame 16, and the mounting frame 38 at the other end of the back side net 3b is opened in a downward U-shaped cross section in the same shape as the mounting frame 37, so that the inner side of the handling chamber 2 is opened. It is adapted to be fitted and supported in the support frame 17 formed below the straw cutting blade 17a on the side.

As shown in FIG. 3, the fixing mechanism 5 includes a support frame 50 which is fixed inside the lower side plates 27, 28 in front of and behind the handling chamber 2 by a mounting screw 29 via a mounting plate 50a. A plurality of pressing members 51 that have appropriate intervals in the width direction of the joint end 33 of the side net 3a and the back net 3b and that presses in a detachable manner are installed, and the pressing members 51 are closed by the downward movement of the handling chamber case 10. It is sometimes in a press-fixed state, and is connected so that it can be interlocked and switched to a release state when the upper movement is opened. That is, the pressing member 51 is composed of rollers which are attached to both sides of the attachment arm 53 of the vertical axis 52 which is rotatably supported in the box frame 50b of the support frame 50 via attachment pins 54 and which are rotatable. The eccentric connecting pins 55, 55 provided at the lower end of each vertical axis 52 are connected by a connecting rod 56 in the direction crossing the support frame 50, and the connecting pin on the side of the pressing member 51 installed close to the front wall 28. 55 is the long hole 6 of the operating lever 6
By being inserted into 0, each pressing member 51 is projected and rotated from the support frame 50 by the fixed side operation of the operation lever 6 (solid arrow in FIG. B), and the joint surfaces of the joint frames 35 and 36 are pushed. The nets 3a and 3b are in contact with each other and fixed to the machine body.

At this time, the pressing members 51, 51, which are installed with a proper interval in the width direction of the receiving net 3, are simultaneously rotated inward and outward by the operation of the operation lever 6, so that they are simultaneously rotated. Positioning and fixing can be performed without displacing the handling port side net 3a and the back side net 3b to one side. Further, the pressing member (roller) 51 has a downwardly inclined restricting surface 51 a formed below the pressing contact surface on the outer circumference of the roller.
1a is pressed against the abutting surfaces 35a and 36a that are formed in a downward slanted manner to project below the joining surfaces of the joining frames 35 and 36, and the joining frame 3
With the upper pieces of 5, 36 locked on the upper surface of the support frame 50, the vertical movement is fixed in a wedge shape so that the above nets 3a, 3b are prevented from being lifted upward with a simple structure. ing. Although the restricting surface 51a is formed to be inclined downward in the embodiment, the lower surface of the pressing member 51 or the lower surface may stop the movement of the receiving net 3 upward without forming the inclined surface. .

Then, the mounting frames 37, 3 of the both nets 3a, 3b
Reference numeral 8 denotes a trapezoidal cross-section with a tapered tip, and is fitted into the U-shaped support frames 16 and 17 each having a downwardly expanding joint surface matching the cross-sectional shape. By pressing the joining ends 33 by the fixing mechanism 5 as described above, the handling side net 3a and the back side net 3b are stably wedge-shaped engaged with the attachment frames 37, 38, and the joining ends of the two are joined. With the fixing mechanism 5 firmly supporting and supporting 33, 33, a series of mounting of the receiving net 3 can be easily performed. Incidentally, 39 is a cover piece bent from the inner side surface of the joint frame 35 of the handling side net 3a and installed so as to cover the starting end portion of the back side net 3b. Prevents degraining from adhering to the beginning.

A partition plate 32 provided upright on the handling side net 3a.
On the lower side in the rotating direction of the handling cylinder 2a, a handle portion 32a is integrally formed by cutting out so as to form a handle interval H between the handle cylinder 2a and the crimp net 31, and holding this portion allows the receiving net 3 to be attached and detached. It is safe and easy to carry out and simplifies its manufacture. The grip portion 32a may be formed by fixing another member as shown in the partition plate 32 of the inner net 3b. Further, a plurality of handles 8 are fixed to the lower surface in the middle of the joint frame 36 of the back side net 3b, and the bent other end of the grip 8 is on the back side net 3b.
It is formed so as to serve as a stopper 8a for temporary holding at the time of mounting. The handle 8 can be conveniently used as a handle for attaching / detaching the back side net 3b. The handle 8 is installed in the space on the support frame 50 in the mounted state of the back side net 3b, and the stopper 8a is provided at its tip portion. By contacting the side surface of the support frame 50, the joint frame 36 is supported at the temporary holding position without being brought too close to the fixing mechanism 5 by its own weight of the back side net 3b, and fixing and releasing operations by the fixing mechanism 5 are performed. In addition, the handling side net 3a can be attached and detached safely and easily.

Next, the operation lever 6 will be described. The middle part of the operation lever 6 connected to the fixing mechanism 5 is attached to the front side lower plate 27 side with the fixing mechanism 5 side being attached.
An operation window 18 is provided in which a pivot pin 61 is pivotally supported in the shaft 9 so as to be swingably rotatable in the lateral direction, and an operation portion 62 on the other end side is opened in the lower case 11 below the feed chain 21 so as to be openable and closable. The fixing and releasing operations are performed smoothly by using a boosting mechanism that extends for a long time and rotates the pressing member 51 with a strong force even when the operating portion 62 is lightly operated. In the operation portion 62 portion of the operation lever 6, a cord or a link such as a wire or a rope which is connected to the operation member 13a extended from the mounting arm 13 of the handling chamber case 10 described above through the spring 63. The other end of the connecting member 65 made up of a mechanism is fixed, and the connecting member 65 is pulled when the downward movement of the handling chamber case 10 is closed.
(B) is swung in the direction of the solid line to operate the pressing member 51 in the fixed direction. Further, a tension spring for pulling and urging the operation lever 6 in the releasing direction of the dotted line is attached to the fastening portion 66 of the connecting member 65, and the operation lever 6 is moved when the handling chamber case 10 is moved upward and opened. The pressing member 51 is connected so as to swing in the dotted line direction and rotate in the releasing direction.

Since the present invention is constructed as described above,
As shown by the dotted line in FIG.
When the upper part is opened and opened, the handling chamber 2 is opened and the handling barrel 2a and the net 3 are exposed, and the culms are wrapped around the handling barrel 2a and the grain and scraps are caught on the net 3 and the like. It is possible to easily remove and clean such as clogging. When the receiving net 3 is removed and maintenance work such as cleaning and maintenance inspection of the receiving net 3 and the rocking sorting body 5 is desired, the handling side net 3a and the back side net 3b are removed from the lower case 11. It can be removed for efficient and accurate operation.

That is, when the connecting member 65 is loosened as the handling chamber case 10 is moved upward, the operating lever 6 is pulled by the tension spring 67 and pivotally rotates, and the pressing members 51, 51 of the fixing mechanism 5 are moved. Can be rotated around the vertical axis 52 in the releasing direction to release the pressing fixation between the pressing members 51 and the joint frames 35 and 36. The handling side net 3a and the back side net 3b, which have been released from the contact by the pressing member 51, are released from the pressing contact engagement state with the support frames 16 and 17 together with the attachment frames 37 and 38, and become free state. So partition plate 3
By grasping and lifting the handle portion 32a and the handle 8 formed at the end of 2, the handling port side net 3a and the back side net 3b can be easily taken out of the machine in sequence.

In this way, the handle side net 3a and the back side net 3
After the maintenance work is completed after removing b, the threshing work can be performed again by mounting and assembling the nets 3a and 3b, moving the handling room case 10 downward, and closing it at the original position. That is, in mounting the both nets 3a and 3b, first, the back net 3b is attached to the mounting frame 38 and the support frame 1 is attached.
In a state where the joint frame 36 is aligned and fitted in
When the upper side is placed on the supporting frame 50 of the fixing mechanism 5 and the hand is released, the stopper 8a of the back side net 3b is moved by its own weight.
It can contact the side surface of 0 and can be stably and easily supported at the temporary holding position.

Next, the handle side net 3a is fitted and fitted with the mounting frame 37 in the support frame 16 in position.
By placing the upper side of the joining frame 35 on the support frame 50 portion of the fixing mechanism 5, the handling opening side net 3a can be easily set in the temporary holding state. In this way, when positioning the handling port side net 3a and the back side net 3b, as in the conventional one, both nets 3a, 3b are inserted and guided along the guide rails, or the mounting frame 37 or 38 part. It is possible to easily and quickly perform positioning and temporary holding without carrying out a troublesome work such as inserting the mounting pin projecting from the mounting pin into a small-diameter mounting hole formed on the lower case side.

Then, by lowering the handling chamber case 10 while temporarily holding the handling port side net 3a and the back side net 3b, the connecting lever 65 of the operating lever 6 is pulled against the tension spring 67. The pressing members 51, 51 are pivotally projected in the fixing direction. As a result, the pressing member 51 presses the attachment frames 37 and 38 at the other end portions against the corresponding support frames 17 and 18 by bringing the joining frames 35 and 36 into contact with their abutment surfaces and pressing them while rotating. The joint frame 3 is moved and fitted so as to be firmly fixed by a wedge action.
5, 36 are in a stable joined state via the fixing mechanism 5, and the downward regulation surface 51a formed on the pressing member 51 accurately fixes the movement in the up-down direction, so that the receiving net 3 is lifted and vibrates. Can be accurately prevented.

The fixed state of the pressing member 51 is reliably maintained by the pulling force of the connecting member 65. Therefore, the attachment / detachment work of the handling port side net 3a and the back side net 3b can be accurately performed by a simple operation, and the maintenance work can be efficiently and favorably performed. Further, in the case where the operation of the connecting member 65 or the like is not performed properly during the maintenance work, the pressing member 51 is surely operated by operating the operation lever 6 independently from the outside of the machine body at any time, and the handling side net It is possible to quickly attach and detach the 3a and the back side net 3b.

[0021]

Since the present invention is configured as described above, it has the following effects. According to the first aspect, the handling-side net and the back-side net are continuously joined by pressing the joining ends of the nets with each other by the pressing member, and the respective attachment portions are appropriately pressed against the machine body. Since the positioning and fixing are easy, the work for attaching and detaching the receiving net can be easily performed, and the maintenance work can be performed well.

According to the second aspect, when the handling side net and the back side net are pressed by the restricting surface formed on the roller, the nets are simultaneously fixed in the downward direction and the lifting of both nets is prevented with a simple structure, which is preferable. Threshing work can be performed.

According to the third aspect of the present invention, the fixing state of the receiving net and the lower case can be released in association with the upward movement opening of the handling room case, so that the receiving net can be easily attached and detached when the handling room is opened. Can be done. Further, it is possible to prevent troubles such as forgetting to fix the pressing member and to perform good maintenance work.

According to the present invention, since the fixing mechanism can be operated independently to fix and release the handling side net and the back side net at any time, it is possible to easily attach and detach both nets. In addition to being able to operate, it can be operated when the operation of the rope is not performed well.

[Brief description of drawings]

FIG. 1 is a front sectional view showing the operation of a thresher having an embodiment of the present invention.

FIG. 2 is a plan view showing a structure in which a handling chamber case and a fixing mechanism are connected to each other and a structure of a receiving net, partially broken away.

FIG. 3A is a side cross-sectional view showing a state in which the handle side net and the back side net are fixed by a fixing mechanism. FIG. 6B is a plan view showing the configuration of the pressing member. FIG. 6C is a side view showing the configuration of the fixing mechanism.

[Explanation of symbols]

 1 Threshing machine 2 Handling room 2a Handling barrel 3 Receiving net 3a Handling side net 3b Back side net 5 Fixing mechanism 6 Operating lever 10 Handling room case 11 Lower case 12 Rotating shaft 13 Mounting arm 22 Inlet side plate 23 Outlet side plate 33 Joint end 51 pressing member (roller) 51a regulating surface 65 connecting member 67 tension spring

Claims (4)

[Claims] 1. A receiving net is divided into a plurality of handling side nets and back side nets, and adjacent joint ends of the both nets are continuously provided through a fixing mechanism having a pressing member capable of releasing the pressing. By pressing the joining ends together by the pressing member, the attachment portions formed at the other end portions of the handling-side net and the back-side net are pressed against the support frame formed on the machine body to be removably positioned. A device for removing and attaching a net to a thresher, which is fixed. 2. The pressing member of the fixing mechanism is a roller, and a regulation surface is formed on the lower surface of the outer periphery of the roller, and the regulation surface is pressed against a contact surface formed at the joining end of the handling side net and the back side net. The receiver net attaching / detaching device of the threshing machine according to claim 1, wherein the nets are prevented from floating upward by contacting with each other. 3. A threshing machine in which a handling chamber case in which a handling barrel is rotatably mounted on an inner shaft is rotatably provided in a lower case with a rotation shaft serving as a rotation fulcrum, and a receiving net is fixed to the lower case. By connecting the fixing mechanism through a connecting member that is activated when the handling chamber case is opened and closed, the receiving net is fixed when the handling chamber case is moved downward and when the handling chamber case is moved upward. A receiving net attaching / detaching device for a thresher, which is operated in a linked manner so as to release the fixed state. 4. A connecting member that is actuated when the handling room case is opened and closed by an operating lever capable of independently operating a fixing mechanism, and a cord or the like connected to the operating lever from the handling room case. The threshing machine receiver net attachment / detachment device according to claim 3, which is configured.