JPH056759Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] The present invention relates to a technology for raising and lowering the handling barrel as well as opening and closing the upper threshing case in a self-threshing type threshing device installed in a combine harvester, a harvester, etc. be.

[Conventional technology]

If threshing is carried out for a long period of time, straw waste may become entangled in the handling barrel, the receiving net may become clogged, reducing threshing efficiency, or straw waste may become clogged in the handling chamber, making it difficult to thresh. In order to deal with these situations, as disclosed in Japanese Utility Model Application No. 59-150231, a technique for cleaning the inside of the handling chamber was developed in which the threshing case was supported by the handling drum. Some threshing cases have a divided structure into an upper threshing case and a lower threshing case, and the upper threshing case is supported together with the handling barrel so that it can swing open and close up and down.

[Problem that the invention attempts to solve]

In so-called self-threshing type threshing equipment equipped with a feed chain, a transport entrance for carrying in grain culms is opened in the front wall of the handling room, and a transport exit for transporting waste straw is opened in the rear wall of the handling room. A grain culm transport route along the feed chain from the inlet to the transport exit;
Since the so-called handling port is open, the upper threshing case that supports the handling barrel is supported only by the back side of the handling chamber and has a cantilevered shape. Therefore, when the threshing case is divided into parts and the upper threshing case is structured to swing up and down together with the handling drum as in the prior art, the upper threshing case cannot be moved due to the threshing load during the threshing operation or the rotating action of the handling drum. There was a problem in practical use because the case would shake, which could lead to damage to the upper threshing case.

Focusing on the above-mentioned points, the present invention is a threshing device in which the upper threshing case can be opened and closed up and down, to prevent the swinging phenomenon of the upper threshing case in the closed position, to create a structure that can withstand practical use, and to simplify maintenance. It is intended to.

[Means for solving problems]

The feature of the present invention is that the upper threshing case, which rotatably supports the handling drum, is supported by the lower threshing case so that it can be opened and closed vertically, and the handling cylinder is raised together with the upper threshing case. A locking means for engaging and fixing the upper threshing case in a lowered closed position is provided at the front and rear of the threshing case, and a lever for operating the locking means that can be operated from the feed chain side is provided at the front and rear of the upper threshing case, and , a reinforcing frame is constructed over the upper threshing case and the lower threshing case by bypassing the waste straw conveyance path, and this reinforcing frame is equipped with a separation and connection mechanism, the functions and effects of which are as follows. It is.

[Effect]

With the structure described above, when the upper threshing case is in the lowered and closed state, that is, in normal working conditions, the upper threshing case is connected to the lower threshing case, which can be regarded as a rigid body, through the front and rear locking means, and is also connected to the lower threshing case through the reinforcing frame. Since the upper threshing case is connected to the lower threshing case, the swinging phenomenon of the upper threshing case can be suppressed.

By operating the lever, the locks at the front and rear of the threshing case are released, and the separation and connection mechanism of the reinforcing frame is released, thereby making it possible to lift the upper threshing case upward together with the handling barrel.

In this case, the locking means before and after the threshing case and the separating and connecting mechanism of the reinforcing frame can be operated from the feed chain side.

[Effect of idea]

As described above, according to the present invention, the upper threshing case in the lowered closed position can be firmly fixed by the front and rear locking means and the reinforcing frame.
The swinging phenomenon of the upper threshing case during threshing work can be reliably suppressed, and damage caused by the swinging phenomenon of the upper handling barrel case can now be prevented.

Moreover, the operation of fixing and unfixing the upper threshing case can all be performed from the feed chain side, resulting in high handling efficiency.

〔Example〕

Hereinafter, a threshing device which is an embodiment of the present invention will be described based on the drawings.

The entire threshing device is constructed as follows.
In other words, as shown in Fig. 6, the grain culms that are held and conveyed by the feed chain 1 in a sideways posture are transferred to the handling cylinder 3 which is horizontally suspended in a drivable manner in the handling chamber 2 of the threshing device. The grain is then threshed. Threshed paddy and relatively small straw waste leak through the receiving net 4 placed below the handling barrel 3, fall onto the grain pan 6 installed on the swing sorting frame 5 below, and are collected. The paddy is sent to the grain sieve 7 on the lower side while being sorted by specific gravity by the shaking action, and on the grain sieve 7, the paddy is sent to the first grain recovery section 9 by the swinging action and the air blowing action from the winnower 8.
The leakage will be recovered. The paddy with branches, etc. collected in the second material collection unit 10 is sent to a processing chamber (not shown) from a thrower (not shown) that throws away the grains, and is single-grained and placed on the swing sorting frame 5. It will be returned to.

To explain in more detail, the threshing cases are 1st, 5th, and 6th.
As shown in the figure, it is formed of an upper threshing case 15 and a lower threshing case 16, and the handling cylinder 3 is pivotally supported in the upper threshing case 15 so as to be rotationally driven around a horizontal axis _P1. In addition, the upper threshing case 15
is attached to the lower threshing case 16 so as to be vertically swingable around the horizontal axis _P2 . The grain culms that are pinched and conveyed by the feed chain 1 are transported at the conveyance entrance 1.
7 into the handling chamber 2, passes between the lower side of the handling drum 3 and the receiving net 4, is threshed there, exits from the conveyance outlet 18 of the handling chamber 2, and is transferred to the feed chain 1.
From there, it is passed to the exhaust chain 19 and sent diagonally backward.

Next, the upper threshing case 15 and the lower threshing case 1
6, the reinforcing frame 20 is constructed from the upper part of the upper threshing case 15 to the first reinforcing frame part 20, as shown in FIG.
a is extended, and a substantially J-shaped second reinforcing frame portion 20b is extended from the lower threshing case 16 so as to bypass the straw removal path, that is, the path on which the straw removal chain 19 is constructed. First and second frames 22 and 23 extending from the back side of the threshing device are connected to the second reinforcing frame portion 20b.

The reinforcing frame 20 is composed of the first and second reinforcing frames 20a and 20b, and the upper threshing case 1
As shown in FIGS. 1, 3 and 4, the separation and connection mechanism 21 has a structure in which the support shaft 24 is rotated around its own axis P ₄ along the first reinforcing frame 20a. is rotatably supported by
An operating arm 25 is attached to one end of the support shaft 24, and a hook 26 is attached to the other end. And operation arm 2
A helical spring 29 is attached to 5, which biases the support shaft 24 and the hook 26 toward the engagement side with a pin 34, which will be described later, and the first reinforcing frame portion 20a.
A hook 27 is also fixed to the end of the holder. On the other hand, a pair of engaging members 28 are attached to the second reinforcing frame portion 20b, and a pin 34 is installed across both engaging members 28. Separation and connection mechanism 21
is constructed as described above, and when the upper threshing case 15 is closed, as shown in FIGS. 1 and 4,
The hook 27 engages the engaging member 28 from above, and the hook 26 engages the pin 34 from below.

Next, the opening/closing structure of the upper threshing case 15 will be described in detail. As shown in _FIG . Upper threshing case 15 near the rotation axis P ₁ of the handling cylinder 3 and the roller-shaped locking part 30 provided on the lower threshing case 16
A lever 31 in the shape of a balance is swingably mounted around an axis _P3 , and the direction of the axis _P3 is perpendicular to the plane of the paper in FIG. 5, similar to the horizontal axis _P2 of the upper threshing case 15. facing the direction. As shown in FIGS. 1 and 5, the levers 31 are provided on both the front and rear sides of the upper threshing case 15, and each lever 31 is provided with a hook-shaped engaging portion 31a on the locking portion 30 side. , the outer end side extends outward from the side wall 16b on the feed chain 1 side. Furthermore, the front and rear levers 31
A horizontal rod 32 is installed across both outer ends of the shaft, and the length from the shaft center P ₃ to the horizontal rod 32 is sufficiently longer than the length from the shaft center P ₃ to the engaging portion 31a. It is set to be.

The state shown in FIG. 5 is the engaging portion 31a of the lever 31.
is engaged with the locking portion 30 of the lower threshing case 16 from below, and the upper threshing case 15 is fixed in the closed position. As shown in the figure, the lever 31
When the lock is lifted upward, the engaging portion 31a is disengaged downward from the locking portion 30, and the lock is released.
In this case, the reinforcing frame 2 of the upper threshing case 15
The operating arm 25 installed at
2, and when the lever 31 is lifted and operated as described above, the operating arm 2 is moved in conjunction with this.
5 is also lifted, and the separation and connection mechanism 21 of the reinforcing frame 20 is released, as shown in FIG.

In the above state, the lever 31 contacts the stopper 33 of the upper threshing case 15 from below, and when the lever 31 is further lifted upward and operated, the second
As shown in the drawings and FIG. 5, the upper threshing case 15 is lifted upward together with the lever 31.

The operating arm 25 can also be operated independently and independently of the lever 31. Furthermore, instead of a structure in which the operating arm 25 and lever 31 are operated in conjunction with each other, a structure in which they can be operated completely independently may be used.

Note that although reference numerals are written in the claims section of the utility model registration for convenience of comparison with the drawings, the present invention is not limited to the structure of the attached drawings by such entry.

[Brief explanation of the drawing]

The drawings show an embodiment of the self-threshing type threshing device according to the present invention, in which Fig. 1 is an overall perspective view showing the reinforcing frame, separation and connection mechanism, etc., and Fig. 2 is a view of the upper threshing case taken from the state shown in Fig. Figure 3 is a front view of the separation and connection mechanism in the reinforcing frame, Figure 4 is a side view of the separation and connection mechanism in the reinforcement frame, and Figure 5 is a view from the conveyance entrance side of the thresher. The side view shown in FIG. 6 is an overall front view of the threshing device. 1...Feed chain, 3...Handling cylinder, 15...
...Upper threshing case, 16...Lower threshing case, 2
0... Reinforcement frame, 21... Separation and connection mechanism, 3
1...Lever.

Claims (1)

[Scope of utility model registration request] Upper threshing case 1 that rotatably supports the handling cylinder 3
5 is supported on a lower threshing case 16 so as to be vertically swingable to open and close, and the handling barrel 3 is raised together with the upper threshing case 15, and the upper threshing case 15 is lowered and closed before and after the threshing case. In addition to providing a locking means for engaging and fixing in position,
A lever 3 for operating a lock means that can be operated from the feed chain 1 side is provided at the front and rear of the upper threshing case 15.
1, a reinforcing frame 20 is constructed across the upper threshing case 15 and the lower threshing case 16 by bypassing the waste straw conveyance path, and the reinforcing frame 20 is equipped with a separation and connection mechanism 21. Type threshing equipment.