JPH08224036A - Feed chain mechanism in combine harvester - Google Patents

Abstract

PURPOSE: To provide a mechanism for capable of rotating in opened state of a feed chain-guiding lever and keeping the opened rotation state. CONSTITUTION: A feed chain-guiding lever 2 attaching with an upper top end part of an under chain-type feed chain 8 is extended near an upper end part of a vertical conveying device in near side to the top end part of the feed chain 8 between the top end part of the feed chain 8 and a rising device H with placing a pivoting part. The feed chain-guiding lever 2 is attached to an upper face of the feed chain 8 in a forced state. An open-rotating direction of the feed chain 8 is a side direction and an open-rotating direction of the feed chain-guiding lever 2 is an upper direction, and the feed chain 8 is able to be kept in the open-rotated state in a side direction, and the feed chain- guiding lever 2 is able to be kept in the open-rotated state in an upper direction.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention, when the feed chain of a combine is opened and opened, enables the open rotation of a feed chain guide rod that is urged and abutted while interfering with the feed chain. The present invention also relates to a mechanism for maintaining the open rotation state.

[0002]

2. Description of the Related Art Conventionally, a technique in which an under-chain type feed chain can be opened and rotated laterally has been publicly known. For example, it is like the technique described in Japanese Utility Model Publication No. 55-162533. It is also known that a feed chain guide rod is provided so as to contact the upper surface of an under-chain type feed chain, and the feed chain guide rod is rotated to release it upward. For example, it is like the technique described in JP-A-63-112915.

[0003]

However, in the prior art, since the pivotal support portion of the feed chain guide rod is provided in the part of the raising device, a long feed from the part of the raising device to between the feed chains. Since the chain guide rod must be extended, the feed chain guide rod itself is long, resulting in a large weight, and the long distance between the pivot support and the abutment part to the feed chain causes the guide rod to be slender. There is a high possibility that the engagement between the feed chain and the feed chain guide rod will be disengaged due to traveling vibration or rotational vibration of the feed chain. Therefore, in order not to shift the positional relationship between the feed chain and the feed chain guide rod, the feed chain guide rod must use a rod with a large diameter, and the large diameter guide rod causes the triggering device. There is also a problem that the space of the portion is closed due to the installation from the to the feed chain. The present invention solves the problem of the conventional feed chain guide rod. Further, in the prior art, since a side cover for preventing lateral protrusion of the grain culvert is arranged in the rear part of the raising device, a pivotal support is provided on the side cover and the front part. It interferes with the provided feed chain guide rod. On the other hand, as in the present invention, the feed chain guide rod 2 is provided with a pivotal support at a position close to the feed chain 8 and at a position close to the upper end of the vertical conveying device 3, thereby providing a side cover for the raising device H. It is configured so that the interference of can be avoided. Further, since the feed chain 8 is opened and rotated laterally, the feed chain guide rod 2 is opened and rotated upward, so that the position where the feed chain guide rod 2 is held in the open posture and the feed chain 8 are separated. The position to open and turn to the side,
Since the feed chains 8 are in different directions and are separated from each other, the feed chain 8 is opened and the feed chain guide rod 2 is opened in a large space to facilitate the cleaning work for clogging and dust.

[0004]

The object of the present invention is as described above. Next, the structure for achieving the object will be described.
In the structure in which the under-chain type feed chain 8 can be pivotally opened laterally, the feed chain guide rod 2 that abuts on the upper end of the feed chain 8 is connected between the tip of the feed chain 8 and the raising device H. In between,
A pivotal support is provided near the top of the feed chain 8 and in the vicinity of the upper end of the vertical conveyance device 3 so as to extend and abut on the upper surface of the feed chain 8 in a biased state to open the feed chain 8. While the movement direction is lateral, the open rotation direction of the feed chain guide rod 2 is upward, so that the feed chain 8 can be held in the open rotation state to the side and the feed chain guide rod 2 can be held. It can be maintained in an open and rotated state upward.

[0005]

The object and structure of the present invention are as described above, and the structure of the embodiment shown in the accompanying drawings will be described below. FIG. 1 is an overall side view of the combine, FIG. 2 is a perspective view of the reaping and conveying section and the feed chain, FIG. 3 is an outer side view showing a support section of the feed chain guide rod 2 of the present invention, and FIG.
Is an inner side view, FIG. 5 is a front sectional view, and FIG. 6 is an exploded perspective view of a support portion of the feed chain guide rod 2.

In the embodiment shown in FIG. 1, the side cover A together with the feed chain 8 can be rotated laterally to a position A'about a pivotal support portion at the rear end. In this rotated state, the handling cylinder, the crimp net and the rocking sorting device therebelow can be seen from the side, and the hand can be put in for cleaning. Feed chain guide rod 2 which is an essential part of the present invention
Is in contact with the upper part of the front end of the feed chain 8 configured as an under-chain type, and has a role of suppressing the grain stems inherited from the vertical conveying device 3 to the feed chain 8 from scattering upward.

Further, the grain culm after being taken over by the feed chain 8 is one in which the ears are inserted into the handling barrel while sandwiching the grain culm with the chain guide 1 and conveyed to the straw processing device. is there. In FIG. 2, the feed chain guide rod 2 and the feed chain 8 are shown in detail. The grain culm is caused by the raising device H at the front end of the combine, and then cut by the cutting blade, and the stock root part is simultaneously carried by the stock root carrier device 6 and the tip part is carried by the tip carrier device 4, and the stock root part is It is inherited from the middle to the vertical conveying device 3 and rapidly rises, and is inherited by the feed chain 8 while being guided by the feed chain guide rod 2. The pivot portion of the feed chain guide rod 2 of the present invention is configured to be located rearward of the raising device H and on the side closer to the feed chain 8, so that the side cover of the raising device H and the feed chain guide rod are arranged. It is configured so that the operation of rotating 2 upward does not interfere.

Further, the tip transfer device 4 is inserted into the handling room while being assisted by the tip support device from the middle. Feed chain guide rod 2 which is an essential part of the present invention
Is pivotally supported by a guide rod bracket 15 attached to a part of the reaping support pipe 14. Next, with reference to FIGS. 3 to 6, a specific configuration of the support portion of the feed chain guide rod 2 will be described. A guide rod bracket 15 is fixedly provided on the lower surface of the reaping support pipe 14, and the guide rod bracket 15 is formed in a downward U-shape. The pivot rod 2a of the feed chain guide rod 2 is fitted and pivotally supported by the guide rod bracket 15 in the left-right direction.

An arm boss 10 is fixed to the pivot shaft 2a, and a rotary arm 9 is projected from the arm boss 10. One end of a spring locking body 11 of the fulcrum-over spring 7 is locked to the rotating arm 9, and the other end of the fulcrum-over spring 7 is fixedly mounted on a spring locking body 13 fixed to the cutting support pipe 14. There is. The feed chain guide rod 2 is in contact with the feed chain 8 and is in a biased state 2
Since there is a part of the pivot shaft part 2a, which is a fulcrum, between the position 2 and the position 2 ′ which is the open state, the fulcrum crossing spring 7 moves downward at the position 2 in the urging state. It urges in the direction of the feed chain 8 and in the position 2 ', it urges in the releasing direction. When the feed chain guide rod 2 is at the position 2 ', the rotating arm 9 contacts the stopper pin 12 to prevent further rotation.

Therefore, the feed chain guide rod 2 can be maintained while standing upright in the releasing direction, so that the operator can open the feed chain 8 alone. Also,
Even when performing manual handling work, the presence of this feed chain guide rod 2 is an obstacle, and it is difficult to feed the manual culm to the feed chain 8, but the feed chain guide rod 2 is released in the upright state, and this state is Since it can be maintained, manual work can be easily performed.

FIG. 7 is a side view showing a state in which a clogging alarm switch 20 is attached to the base of the feed chain guide rod 2, and FIG.
Similarly, FIG. 9 is a front sectional view, and FIG. 9 is a side view showing a clogged state. In this configuration, between the feed chain guide rod 2 and the portion of the chain guide 1, the clogging alarm switch 2 when the grain culms are clogged on the feed chain 8
0 is set. Conventionally, there is known a technique in which a clogging alarm switch is provided at the joint between the end of the feed chain 8 and the straw chain, but in this configuration, the feed chain guide rod 2 inherits from the feed chain guide rod 2 to the chain guide 1 at the front end of the feed chain 8. Since clogging often occurs also in the portion, the alarm switch of the portion is provided at the base of the chain guide 1.

A switch operating cam 21 is provided on the pivot shaft portion 2a, and when the chain guide 1 is largely rotated due to clogging, the switch operating cam 21 operates the clogging alarm switch 20 to warn the clogging. The clogging alarm switch 20 provided in this way is used when the feed chain 8 is released when the feed chain 8 is opened.
An alarm is always issued when the shaft is moved over the fulcrum, so leave the feed chain guide rod 2 in this open state and
When threshing work is to be started, the same alarm as the clogging alarm is issued and the operator is notified of the feed chain guide rod 2.
Warns that is not restored to normal.

FIG. 10 shows a structure in which the auxiliary chain guide 22 is formed by a leaf spring in parallel with the chain guide 1. Since the chain guide 1 is composed of a round bar, it has a little less elasticity, so an auxiliary chain guide 22 composed of a leaf spring is provided from the pivot shaft portion 2a so that it can be more flexibly clamped against the grain stem. It is projected and provided in parallel. This auxiliary chain guide 22 can also rotate like the chain guide 1 to maintain the released state.

[0014]

Since the present invention is configured as described above, it has the following effects. First, since the feed chain 8 is opened and rotated sideways, while the feed chain guide rod 2 is opened and rotated upward, the position where the feed chain guide rod 2 is held in the open posture and the feed chain Since the positions where 8 is opened and rotated sideways are in different directions and away from each other, it is possible to open the feed chain 8 and to widen the space where the feed chain guide rod 2 is opened. Therefore, cleaning work for clogging and dust becomes easy. Secondly, in the prior art, since the pivot portion of the feed chain guide rod is provided at the part of the raising device, the long feed chain guide rod is extended from the part of the raising device to the space between the feed chains. This is not necessary, because the feed chain guide rod itself is long, resulting in a large weight, and the long distance between the pivot and the abutment part to the feed chain causes the guide rod to be slender and the traveling vibration of the airframe and the feed chain The rotational vibration had a high possibility of disengaging the feed chain from the feed chain guide rod. Therefore, in order not to shift the positional relationship between the feed chain and the feed chain guide rod, the feed chain guide rod must use a rod with a large diameter, and the large diameter guide rod causes the triggering device. There is also a problem that the space of the portion is closed due to the installation from the to the feed chain. In the present invention, the pivotal support portion of the feed chain guide rod 2 is provided between the tip end portion of the feed chain 8 and the raising device H on the side close to the tip end portion of the feed chain 8 and near the upper end portion of the vertical conveying device 3. Since the feed chain guide rod 2 is provided, the length of the feed chain guide rod 2 itself can be shortened, and the space between the rear portion of the raising device H and the vertical conveying device 3 is not blocked by the feed chain guide rod 2. is there. Thirdly, in the prior art, the rearmost part of the triggering device is
Since the side cover is arranged to prevent the culm from sticking out to the side, this side cover and the upward rotation operation of the feed chain guide rod provided with the pivot portion at the part of the raising device are operated. However, there is a risk of interference, but as in the present invention, by providing a pivotal support at a position close to the upper end of the vertical transport device 3 on the side close to the feed chain 8, the side cover of the raising device H can be prevented. Interference can be avoided.

[Brief description of drawings]

FIG. 1 is an overall side view of a combine.

FIG. 2 is a perspective view of a portion of a reaper carrying section and a feed chain.

FIG. 3 is an outer side view showing a support portion of the feed chain guide rod 2 of the present invention.

FIG. 4 is a side view of the same.

FIG. 5 is a front sectional view.

FIG. 6 is an exploded perspective view of a support portion of the feed chain guide rod 2.

FIG. 7 is a side view showing a state in which a clogging alarm switch 20 is attached to the base of the feed chain guide rod 2.

FIG. 8 is a front sectional view of the same.

FIG. 9 is a side view showing a clogged state.

FIG. 10 shows the auxiliary chain guide 22 and the chain guide 1
It is a perspective view provided in parallel with.

[Explanation of symbols]

 1 Chain Guide 2a Pivot Shaft 2 Feed Chain Guide Rod 7 Support Spring 8 Feed Chain

Claims (1)

[Claims] 1. A feed chain guide rod 2 abutting on an upper end portion of the feed chain 8 in a structure in which an under-chain type feed chain 8 can be opened and rotated laterally, is provided with a leading end portion of the feed chain 8. Between the raising device H and a side closer to the tip of the feed chain 8 and near the upper end of the vertical conveying device 3, a pivotal support portion is provided to extend and contact the upper surface of the feed chain 8 in a biased state. Let
The open rotation direction of the feed chain 8 is lateral, whereas the open rotation direction of the feed chain guide rod 2 is upward so that the feed chain 8 can be held laterally in the open rotation state. A combine feed chain mechanism characterized in that the feed chain guide rod 2 can be maintained in an upwardly opened and rotated state.