JPH0310819Y2 - - Google Patents

Description

[Detailed description of the invention] (a) Industrial application field This invention is applicable to the area around the handling drum and inside the handling room of a threshing machine used as a combine harvester, a self-propelled self-thresher, or a single threshing machine, or to a swinging sorting device. This relates to a side opening/closing lid of a threshing device for inspecting and cleaning clogging etc. on the top surface.

(b) Prior Art Conventionally, in the opening/closing mechanism of the cover of a thresher, a technique in which a biasing spring is interposed in a locking pin is known. For example, there is a technique described in Japanese Utility Model Publication No. 56-51715.

Further, in a threshing device, a technology has been filed by the same applicant in which the lower side of the feed chain side can be opened using an opening/closing lid. In this technology, locking the opening/closing lid is a troublesome structure, and in order to prevent the opening/closing lid from opening and closing spontaneously due to a mistake, a strict locking device is required, making opening and closing difficult. Moreover, the task of closing it back up was also troublesome.

Therefore, even though there is an opening/closing lid, operators are reluctant to open and close it, and conversely, if the opening/closing is made too easy, problems such as the opening/closing lid spontaneously opening due to overload in the handling room during work can occur. It was hot.

(c) Problems to be solved by the invention In order to solve the above-mentioned problems of the previous application, the present invention aims to solve the problem of the previous application by allowing the operator to easily open the opening/closing cover by himself and without tools such as spanners. When closing the opening/closing lid, the operator can easily close it by simply lifting the opening/closing lid.
In addition, the stopper spring is double-locked by a helical spring so that it will never come off after it is closed.

(d) Means for solving the problems The problems to be solved by this invention are as described above.
Next, means for solving the problem will be explained.

A lock pin 3 and a lock arm 15 are provided to lock the closed state of the opening/closing lid B which can be opened and closed around the pivot shaft 5, and the lock arm 15 is provided with a locking notch 15a with which the lock pin 3 engages, and is supported by a spring 16. A stopper spring 14, which is always biased toward the lock pin 3 and closes the entrance of the locking notch 15a, is closely biased against the side surface of the lock arm 15, and a fitting hole 14a into which the lock pin 3 is fitted is also formed in the stopper spring 14. When the lock pin 3 and the lock arm 15 are locked, the locking notch 15
The lock pin 3 is inserted into the insertion hole 14a and the lock pin 3 is inserted into the insertion hole 1 of the stopper spring 14 when the locked state is released.
4a is removed from the lock pin 3, and the stopper spring 14 is provided with an opening part 14b which the lock pin 3 comes into contact with during locking, pushes the stopper spring 14 apart and fits into the fitting hole 14a.

(e) Embodiment The purpose and structure of the present invention are as described above, and the structure of the embodiment shown in the attached drawings will be explained.

Fig. 1 is a front sectional view of the threshing device A of the present invention, and Fig. 2 shows the crimp net 1 with the opening/closing lid B on the side opened.
3 is a side view of the opening/closing lid B, FIG. 4 is a front view of the opening/closing lid B, and FIG. 5 is a front view of the opening/closing lid B with it open.
FIG. 6 is a perspective view showing a locking pin portion of the opening/closing lid B, FIG. 7 is a perspective view showing a crimp net holding portion by the opening/closing lid, and FIG. 8 is an enlarged sectional view of the crimp net holding portion.

First, in FIGS. 1 and 2, A is a threshing device and B is an opening/closing lid. The threshing device A may be of a top-handling type or a bottom-handling type. Reference numeral 1 denotes a feed chain, which is an overchain type in which a chain clamping guide is provided on the opening/closing lid side. The crimp net is divided into two left and right crimp nets 18 and 19, which are arranged below the rotating outer periphery of the handling cylinder 2 and handling teeth 2a.

The paddy sorted by the crimp nets 18 and 19 falls onto the swing sorting device 20. FIG. 2 is a front view of a state in which the opening/closing lid B is opened for cleaning the crimp net and the swing sorting device, and the crimp nets 18 and 19 are stretched out. 5 is a pivot shaft of the opening/closing lid B.

The opening/closing and locking structure of the opening/closing lid B will be explained with reference to FIGS. 3, 4, and 5.

The opening/closing lid B has a trapezoidal shape that is narrow at the front and wide at the rear. The lower end thereof is pivotally supported by a pivot shaft 5, and lock pins 3 and 4 are provided at the front and rear. 7,
6 is a long hole for attaching a feed chain clamping guide. The rear part of the opening/closing lid B cannot be rotated to open or close because the feed chain clamping guide and the feed chain 1 are engaged with each other. The elongated hole 6 is configured so that it can escape downward in order to release the engaged state.

FIG. 4 shows the lid B in a closed state, and FIG. 5 shows it in an open state.

Reference numeral 21 denotes a side plate of the threshing device A, from which a support body 33 for supporting the pivot shaft 5 projects. The pivot shaft 5 passes through the hole in the support body 33 and the hole 5a in the opening/closing lid B.

Further, a crimp net receiver 28 is protruded inward from the side plate 21, and the crimp net 18 is placed on this crimp net receiver 28, and the pin 10 is inserted therein. The pin 10 is simply inserted without any bolts or nuts applied, and the contact surface of the opening/closing lid B is pressed onto it to clamp the end surface of the crimp net. Since an insertion hole for a pin 10 is also provided on the contact surface of the opening/closing lid B, the position of the opening/closing lid B in the front and back direction is determined by the pin 10.

In this way, the end of the crimp net 18 is held between the contact surfaces of the crimp net receiver 28 and the opening/closing lid B. Therefore, as soon as the opening/closing lid B is opened, this clamping state is released and the crimp net 18 can be pulled out toward the front.

To explain the front and rear lock levers 12, 24 and lock arms 15, 22, the pivot points of the front lock lever 12 and lock arm 15 are located at the lock arm pivots 9a, 9 that protrude from the support 33.
is installed at the tip of the

That is, the lock arm 15 is pivotally supported by the pivot pin 13. A lock lever 12 is fixed to the other end of the lock arm 15, and a stopper spring 14 is attached to the front side surface of the lock arm 1. As shown in FIG. 4, when the opening/closing lid B is in the locked state, the front end of the lock pin 3 is fitted into the locking notch 15a of the lock arm 15, and the lid is in the locked state.

To release the lock lever 12 from this locked state, first grasp the lock lever 12 and press the opening 14b of the stopper spring 14 with the tip of your thumb to release the fitted state between the lock pin 3 and the insertion hole 14a.
2. When the lock arm 14 is rotated upward, the lock pin 3 engages with the locking notch 15a of the lock arm 15.
It also comes out and the lock state is released.

When the thumb is removed from the opening 14b of the stopper spring 14 in this released state, the stopper spring 14b comes into close contact with the lock arm 15 again, so that the stopper spring 14b is in close contact with the locking arm 15, so that the locking notch 15
a, the operator releases the lock lever 12 and the lock lever 12 and lock arm 1 are closed.
Even if the lock pin 5 rotates downward due to its own weight and the force of the spring 16, the lock pin 3 and the lock arm 15 will no longer lock together.

Therefore, after releasing this front lock arm, the operator grasps the rear lock lever 24 and
Similarly, the lock pin 4 can be removed from the locking notch 22a of the lock arm 22 by opening the opening 23b of the stopper spring 23, removing the lock pin 4 from the insertion hole 23a, and rotating the lock lever 24 in the opening direction.

After this, when the stopper spring is released, the lock pin 4 does not enter the locking notch 22a even though the lock arm is pulled by the spring 17. Reference numeral 8 denotes a lock arm pivot, which projects from the side plate 21. 11 is a pivot pin.

After removing the front and rear lock arms 15, 22 from the lock pins 3, 4, the operator can gradually open the lid B with both hands.
When opening/closing lid B is opened, the front and rear lock arms 15, 22
remains on the side plate 21 side, but the positioning pins 31, 30
are implanted in the lock arm pivots 9 and 8, so that the lock arm is fixed in the position shown in FIG. 5 despite being pulled by the springs 16 and 17.

Next, when closing the opening/closing lid B after cleaning, the operator can forcefully lift only the opening/closing lid B from below without moving the lock arm. That is, as the opening/closing lid rotates, the lock pins 3 and 4 rotate from below and rise as shown in a and b in FIG. When it reaches 23b, it goes inside and releases the stopper spring 14 by itself.
It pushes open back and forth and rises. Furthermore, the lock pins 3 and 4 are connected to the lock arm 15,
The spring 1 contacts the slopes 15b and 22b of the lock arm 22, and the lock arm is pushed outward at this slope.
6, 17, push it open and lock the notch 1 by yourself.
5a and 22a. After fitting into the locking notches 15a, 22a, the springs 16, 1
7 works, the lock arms 15, 22 are pulled back and fitted into the innermost parts of the locking notches 15a, 22a, and the lock pins 3, 4 are moved against the stopper springs 14, 2.
It fits into the fitting holes 14a and 23a of No. 3 and becomes locked.

In FIG. 7, the insertion rails 25, 26 of the crimp nets 18, 19 are shown. Figure 9 shows opening/closing lid B
10 is a rear view, FIG. 11 is a drawing of the lock arm 15 in the locked state, FIG. 12 is a drawing of the lock arm in the released state, and FIG. 13 is a drawing of the first
1 is a bottom view, FIG. 14 is an exploded perspective view of the lock arm and the stopper spring, and FIGS. 15 and 16 are front views of the lock arm 15 in a locked state and a rotating state.

As shown in FIG. 13, the stopper spring 1
Numeral 4 constitutes the lock pin 3 and the stopper spring 14 to such an extent that the lock pin 3 comes slightly inside the tip of the lock pin 3 when brought close to the lock arm 15 in a free state. The inclined portion 15b of the lock arm 15 and the opening portion 14b of the stopper spring 14 are constructed as shown in FIGS. 13 and 14. The stopper 16 is configured to always bias the lock arm in the locking direction to prevent the lock from coming off. 23 is a support body for the pivot shaft 5, and 33a is an insertion opening for the pivot shaft 5.

(f) Effects of the invention Since the invention is constructed as described above, it has the following effects.

First, a stopper spring 14 is attached to the side surface of the lock arm 15, and the lock pin 3 is attached to the locking notch 1.
Since the lock pin 3 is configured to be fitted into the insertion hole 14a while being engaged with the lock pin 5a, there is no possibility that the lock pin 3 and the lock arm 15 will become disengaged due to erroneous operation or vibration of the machine body.

Second, in the prior art, when opening the lid, if the front and rear lock arms were released one by one, the lock arms that were supposed to be released would become locked again due to their own weight or springs.

In contrast, in the present invention, the operator can release the front and rear lock arms one by one, and even if the operator releases his/her hand after releasing the lock arms, the stoppers 16 and 17 remain pulled in the locking direction. Nevertheless, because of the presence of the stopper springs 14 and 23, it will not be locked again.

Third, after releasing the front and rear locking arms, the operator can slowly open the lid while supporting it. Without such a device, the operator would have to remove the front and rear lock arms with both hands, and as soon as they were removed, the lid would suddenly open, which could not be supported with the hands.

Fourthly, when closing the opening/closing lid, if you forcefully push up the opening/closing lid B from below, the lock pin 3 will come into contact with the opening part 14b, and the stopper spring 1
4 is opened, and the lock pin 3 is fitted into the locking notch 15a and the fitting hole 14a, so that locking by the lock arm and locking by the stopper spring can be performed in one rotation.

[Brief explanation of the drawing]

Fig. 1 is a front sectional view of the threshing device A of the present invention, and Fig. 2 shows the crimp net 1 with the opening/closing lid B on the side opened.
3 is a side view of the opening/closing lid B, FIG. 4 is a front view of the opening/closing lid B, and FIG. 5 is a front view of the opening/closing lid B with it open.
Fig. 6 is a perspective view showing the lock pin portion of the opening/closing lid B, Fig. 7 is a perspective view showing the crimp net holding part by the opening/closing lid, Fig. 8 is an enlarged sectional view of the crimp net holding part, and Fig. 9 is a perspective view showing the crimp net holding part by the opening/closing lid. Front view of opening/closing lid B, No. 10
The figure is also a rear view, and Figure 11 is the lock arm 15.
Fig. 12 is a drawing of the lock arm in the unlocked state, Fig. 13 is a bottom view of Fig. 11, Fig. 14 is an exploded perspective view of the lock arm and stopper spring, Fig. 15 and Fig. 16 are the lock arm. 15 in a locked state and a rotating state. B...Opening/closing lid, 1...Feed chain, 3,
4... Lock pin, 12, 24... Lock lever, 14, 23... Stopper spring, 15, 22
... Lock arm, 16, 17 ... Spring.

Claims (1)

[Scope of utility model registration request] A lock pin 3 and a lock arm 15 are provided to lock the closed state of the opening/closing lid B which can be opened and closed around the pivot shaft 5, and the lock arm 15 is provided with a locking notch 15a with which the lock pin 3 engages, and is supported by a spring 16. A stopper spring 14, which is always biased toward the lock pin 3 and closes the entrance of the locking notch 15a, is closely biased against the side surface of the lock arm 15, and a fitting hole 14a into which the lock pin 3 is fitted is also formed in the stopper spring 14. When the lock pin 3 and the lock arm 15 are locked, the locking notch 15
The lock pin 3 is inserted into the insertion hole 14a and the lock pin 3 is inserted into the insertion hole 1 of the stopper spring 14 when the locked state is released.
4a is removed from the lock pin 3, and the stopper spring 14 is provided with an opening part 14b which the lock pin 3 comes into contact with during locking, pushes the stopper spring 14 apart and fits into the fitting hole 14a.