JP3219684B2 - Threshing machine receiving net fixed structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fixing structure for a receiving net installed in a handling room of a threshing machine.

[0002]

2. Description of the Related Art Conventionally, a handling room case in which a handling cylinder is mounted on an interior shaft is provided so as to be vertically rotatable with respect to a lower case, and a receiving net stretched over the handling cylinder is provided on a back side net and a handling side side net. A threshing machine which is divided and detachably attached to a handling room case is known. Then, when the back side net and the handle side net are detachably attached to the joint end side opposite to the mounting frame laterally provided in the handling room case, bolts are provided so as to separately attach the two nets. By attaching the joining end of the two nets to the mounting frame by an attaching means such as the above, the rear net and the mouth net are fixed to the handling room.

[0003]

However, in the means for mounting and fixing the opposed joining ends of the back side net and the handling side net to the mounting frame by bolting, the position of the bolt is at the bottom of the handling chamber. The bolt has drawbacks such as difficulty in tightening because threshing debris adheres firmly.

[0004]

SUMMARY OF THE INVENTION In order to solve the above-mentioned conventional problems, a receiving net fixing structure of a threshing machine according to the present invention comprises a handling room case for rotatably mounting a handling cylinder on an interior shaft. On the opposite back side, a rotatable shaft provided on the lower case is provided so as to be able to rotate vertically, and the receiving net stretched along the handling cylinder is divided into a back side net and a mouth side net In a threshing machine which is detachably mounted on a mounting frame provided in a lower case in a state in which the positioning member elastically urged in the direction in which the receiving net is stretched is attached to the mounting frame, An engaging portion for engaging with the positioning member is formed at a joint end of the net, and when the rear net and the handle side net are set on the mounting frame and the upper portion of the rear net is fixed to the lower case, the rear net is formed. The engaging portion is locked to the positioning member, and the positioning member is pushed by the back net against the elastic biasing force. By, so that locking the 扱口 side network to the positioning member.

[0005] Further, it is characterized in that the upper part of the back side net is connected and pressed and fixed when the handling room case is lowered and closed.

[0006]

An embodiment of the present invention will be described with reference to the drawings. In FIG. 1, reference numeral 1 denotes a threshing machine that can be mounted on a traveling machine such as a combine machine. The threshing machine 1 handles a culm while nipping and conveying the culm by a feed chain 21 provided along a mouth 20 of a handling room 2. The threshing is performed by the toothing 2b by rotation of the handling cylinder 2a mounted in the chamber 2, and the threshing material is subjected to leakage sorting by the receiving net 3, and the grain is removed by the same sorting and straw removing means as a conventional threshing machine. In addition to collecting the waste, waste such as cuts and debris and threshed waste are discharged outside the machine to perform a series of threshing operations.

As shown in FIGS. 1 and 2, the threshing machine 1 comprises:
An entrance side plate 22 of the handling room 2 for rotatably supporting the handling cylinder 2a,
The outlet side plate 23 is provided with a handling room case 10 integrally formed by a top plate portion 24 and a receiving net 3 described below, which is curved along the rotation trajectory of the handling drum 2a, and swings downward. It is divided into a box frame-shaped lower case 11 in which a sorting body or the like (not shown) is installed.

In the lower case 11, a rotation support shaft 12 is laterally suspended substantially parallel to the rotation axis P of the handle cylinder 2a between the fixing plates 11a, 11a on both sides of the body on the side opposite to the handle 20. Rotating support shaft 1
2 is provided so as to be vertically movable via a mounting arm 13 and a fixture (not shown) having an appropriate configuration is released, and then a maintenance work posture (upward movement) indicated by a dotted line from a threshing work posture (downward closing posture) indicated by a solid line. When the handle 2 is moved upward to the open position, the inside of the handling chamber 2 is largely opened and the receiving net 3 can be exposed. In this state, threshing materials, clogging of debris such as straw, and grain The removal work such as the winding of the culm and the attachment / detachment work of the receiving net 3 can be easily performed.

Further, the receiving net 3 in this embodiment is formed in two parts into a mouth side net 3a and a back side net 3b, and the lower lip plate 11b on the suction side 20 and the central part of the lower part of the handling chamber 2 are formed. , And is detachably attached to the lower case 11 via a mounting frame 11c horizontally provided in the front-rear direction and receiving members 5 and 5 protruding from the upper rear part of the handling room 2. That is, in the state where the positioning pin 3P is pushed into and engaged with the lower lip plate 11b at one end thereof,
The other joint end 3S is placed on the mounting frame 11c and is pressed and locked by a mounting mechanism 30 described later, and the back side net 3b is mounted on the mounting frame 11c with the joint end 3S side mounted on the mounting frame 30. In the state where the mounting hole 33a formed in the other receiving piece 33 is inserted into and supported by the positioning pin 5a protruding from the receiving member 5, the fixing mechanism 6 described below is used. It is fixed by attaching and pressing.

Reference numeral 7 denotes a straw cutting blade detachably attached to a mounting table 70 fixed to the lower case 11 at the back of the handling room 2 via a mounting frame 7a. There are protruding. The mounting base 70 is formed in an inverted L-shape in a side view, and has a flat base portion between which the receiving piece 33 of the back net 3b can be vertically movably interposed between the receiving member 5 and the set. A gap H is provided and fixed to the lower case 11, and the upper portion of the mounting surface of the straw cutting blade 7 connected to the lower case 11 is joined to the lower rear end of the top plate 24 of the handling room case 2a in the front-rear direction. The receiving member 5 has a long hole 50 formed in the side surface thereof, and is attached to the front and rear sides of the lower case 11 via mounting screws 51 so as to be vertically adjustable. The height can be adjusted while appropriately adjusting the mounting height.

Next, the structure of the fixing mechanism 6 will be described with reference to FIGS. Reference numeral 60 denotes a base which is detachably mounted on a mounting base 70 of the straw cutting blade 7 by mounting screws 71.
A letter-shaped holder 62 is fixed, and a pin shaft-shaped fixing member 61 having a flange 61a formed on the head is penetrated and supported in the holder 62 so as to be vertically slidable. The fixing member 6
1 is that the tension spring 63 is attached to the holder 62 and the fixing member 6.
1 and is interposed between the receiving seat 61b and the fixing member 61 to urge the fixing member 61 downward, and the thread formed at the lower end thereof has elasticity made of rubber or plastic material. A press-contact member 65 having a property is screwed up and down so as to be adjustable.

As a result, the fixing member 61 is
When the pressing member 6 is pushed by the operating member 9,
5, a plurality of places in the front-rear direction of the receiving piece 33 of the back side net 3b are pressed between the receiving members 5 so as to be accurately fixed. That is, the operating member 9 for operating the fixing member 61 is rotatably fitted to the rotation support shaft 12 so as to be externally attached thereto.
When the handling chamber case 10 rotates downward, the contact surface formed on the arcuate cam surface of the operating member 9 vertically moves the fixing member 61 when the handling chamber case 10 rotates downward. Direction, and securely fix the receiving net 3 without rattling. In addition, a fixing gap is provided below the operating member 9 so that the fixing member 61 is in contact with the back side of the flange 61a and the fixing member 61 is
The lifting piece 90 which is lifted against the pressure is integrally formed.

The mounting mechanism 30 is constructed as shown in FIG. 4, and a positioning member 31 is engaged at a plurality of positions with a joining end 3S of the back side net 3b and the handle side side net 3a facing each other. , Is easily and stably attached to and fixed to the mounting frame 11c. That is, the positioning member 31 formed of a round bar-shaped member is slidably inserted in the extending direction of the receiving net 3 in the mounting hole 11d formed in both downward U-shaped pieces of the mounting frame 11c, A spring 32 is inserted between a protrusion (collar piece) 31a protruding from the positioning member 31 and one side piece of the mounting frame 11c so that the positioning member 31 protrudes toward the back net 3b. Elastic biasing.

On the other hand, the joint end 3S extends over the width of the mesh frame 3F on the opposite side of the back side net 3b and the handle side side net 3a.
The positioning portion 3K is formed to be bent in a U-shape when viewed from the side, and the short upper side is inclined downward while the long upper side is placed on the upper surface of the mounting frame 11c to approach the side piece of the mounting frame 11c. At the same time, the positioning portions 3K formed inside the joining end 3S are brought into contact with both ends of the positioning member 31 so as to press the nets 3a and 3b in the direction in which they are stretched and prevent the nets 3a and 3b from rising upward. In addition, positioning and fixing can be performed. In the illustrated example, the joint end 3S is formed in a U-shape when viewed from the side. However, the present invention is not limited to this, and the joint end 3S may have a V-shape. Positioning means such as forming an engaging hole with which the conical end portion of the positioning member 31 is pressedably engaged with the 3S may be used.

With the above-described structure of the present invention, the upper part of the handling chamber 2 is opened by moving the handling chamber case 10 upward and open as shown by the dotted line from the threshing work attitude shown by the solid line in FIG. In the maintenance work posture, the operating member 9 rotates in the same direction together with the handling room case 10 via the rotating cylinder 15, so that the fixing of the pressing of the back side net 3 b by the fixing member 61 is released and the lifting piece is lifted. 90 raises the fixing member 61 to maintain the release posture.

Therefore, in this state, it is possible to switch from the receiving net fixing position shown in FIG. 4B to the receiving net fixing releasing position shown in FIG. Since the back side net 3b can be freely moved upward in H, the back side net 3b is pushed and urged in the direction of the arrow by the urging force of the spring 32 of the positioning member 31, and is detached from the positioning pin 5a of the receiving member 5. In addition to making the detachment easy, the joining end 3S can be set in a free state with respect to the mounting frame 11c, and the back side net 3b can be easily pulled out along the net guide 11G and pulled out of the machine.

Next, the suction side net 3a is connected to the positioning member 3
1 is moved in the direction of the arrow by the elastic force of the spring 32 due to the release of the pressing contact, and is separated from the engaging portion 3K of the joint end 3S. It can be removed. The receiving net 3 thus taken out of the machine is cleaned, repaired or replaced, and when reassembling to the lower case 11, the handling side net 3b is first set in the reverse operation to the above ( 4). Then, the back side net 3b is
Set as shown in FIG. The above spring 3
The elasticity of the positioning member 31 is at least
What is necessary is just to operate so that it may protrude to the b side, and to release the fixation of the handling side net 3a.

At this time, the mounting hole 33a of the receiving piece 33 of the back side net 3b faces the positioning pin 5a. When the handling room case 10 is moved downward, the operating member 9 is also rotated downward and held. Since the upper piece 90 comes off the flange 61a, the fixing member 61
Presses the receiving piece 33 by the spring 63, so that the back side net 3b can be properly positioned. When the handling room case 10 is further lowered from this state, the cam-shaped surface of the working member 9 presses the flange 61 a, and the fixing member 61 pushes the receiving piece 33 with the receiving member 5 via the pressing member 65. The elastic member is pressed accurately in the vertical direction with elasticity therebetween, and securely mounts and fixes the back side net 3b.

The back side net 3b is connected to the lower case 11 from above.
When it is fixed by pushing, the joining end 3S on the back side net 3b side pushes the positioning member 31 against the elastic force of the spring 32, so that the other end of the positioning member 31 is connected to the opening side net 3a. The connecting end 3S comes into contact with and presses the connecting end 3S, and the handle side net 3a prevents the upward lifting between the lower lip plate 11b and the mounting frame 11c via the positioning pin 3P and the positioning member 31. It can be easily and accurately positioned and fixed in the state.

Therefore, even if the back side net 3b and the handle side side net 3a are loosely attached to the lower case 11 due to processing distortion or the like, the fixing member 61 and the positioning member are positioned with the downward rotation of the handling chamber case 10. Since it is automatically pressed and fixed by the member 31, it can be accurately fixed and the back side net 3
The attachment / detachment work between b and the handling side net 3a can be performed easily and efficiently. In the illustrated example, the positioning member 31 is provided with an elastic biasing force by inserting and inserting a coil-shaped spring 32. However, the positioning member 31 itself has an elastic biasing force, for example, a bent spring plate piece. It may be performed by means such as configuration. In addition, the positioning pin 5a for positioning the receiving piece 33 of the back side net 3b is provided on the receiving member 5, but may be provided on the fixing member 61 side without being limited to this.

[0021]

As described above, the present invention has the following advantages. According to the invention of claim 1,
When fixing the back side net and the handling side net to the mounting frame, the positioning member is pushed by the back side net against the elastic urging force to lock the engagement part of both nets. With the attachment / detachment of the side nets, the handling side nets can be fixed and released, and the attachment / detachment of both nets can be easily performed with a simple configuration.

According to the second aspect of the present invention, the upper side of the back side net is pressed and fixed to the lower case in connection with the downward closing movement of the handling room case, so that the back side net and the handle side side net can be easily and reliably fixed. can do.

[Brief description of the drawings]

FIG. 1 is a front sectional view showing a main part of a threshing machine provided with a receiving net fixing structure according to the present invention.

FIG. 2 is a plan sectional view showing a main part of FIG. 1;

FIG. 3 is a perspective view showing a fixing mechanism of the receiving net.

FIG. 4 is a side view showing the operation of the attachment mechanism of the receiving net, and FIG. (B) is a side view showing the fixed state of the back side net and the handling side net.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Threshing machine 2 Handling room 2a Handling cylinder 3 Receiving net 3a Handling opening side net 3b Back side net 3S Joining end 3K Engaging part 6 Fixing mechanism 10 Handling room case 11 Lower case 11c Mounting frame 12 Rotating support shaft 31 Positioning member 32 spring

Claims (2)

(57) [Claims] A handle case for rotatably mounting a handle cylinder on an inner shaft is provided so as to be rotatable up and down around a rotation support shaft provided in a lower case on a back side opposite to a handle side. In a threshing machine which is detachably attached to a mounting frame provided in a lower case in a state where a receiving net stretched along the handling cylinder is divided into a back side net and a handling side side net, a receiving net is provided on the mounting frame. A positioning member that is elastically biased in the direction in which the net is stretched is attached, and an engagement portion that engages with the positioning member is formed at a joint end of the back side net and the handling side net. When the side net is set on the mounting frame and the upper part of the back net is fixed to the lower case, the engaging portion of the back net is locked to the positioning member, and the positioning member is opposed to the elastic urging force. A threshing machine receiver characterized in that the thrust side net is locked to the positioning member by being pushed by the back side net. Net fixing structure. 2. The receiving net fixing structure for a threshing machine according to claim 1, wherein the upper portion of the back net is connected and pressed and fixed when the handling room case is lowered and closed.