JPS586255Y2 - Combined harvester - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a handling depth adjustment device for a combine harvester that adjusts the handling depth depending on the length of the cut husk.

Such a handling depth adjusting device is a conveying device (hereinafter referred to as a feed chain) in a threshing device that clamps the stock base of the cut husk.

) is configured to be able to swing freely around the starting end of the feed chain, thereby moving the end of the feeding chain near and far with respect to the starting end of the feed chain. This makes it possible to adjust the handling depth by changing the gripping point of the culm stock by the feed chain in the culm length direction when the baton is touched at the base of the culm from the clamping conveyor to the feed chain. In order to change the position of the conveyance start end in the length direction of the cut husk culm in an upright position, the clamping and conveying device is configured to be swingable about its conveyance terminal end as a fulcrum, so that the conveyance starting end of the clamping and conveying device There is an existing device in which the handling depth is adjusted by changing the gripping position of the cut husk held by the conveyance starting end in the length direction of the culm.

In addition, the clamping and conveying device is configured to be swingable as a set of seesaws, with the midpoint in the conveying direction of the clamping and conveying device as a fulcrum, and thereby, when clamping the harvested husk culm and touching the reaped husk to the feed chain. It has come to be considered that the handling depth adjustment is dividedly performed at both times.

In this case, compared to the case where the handling depth is adjusted all at once when touching the reaped husks to the feed chain or when clamping the reaped husks as described above, the conveyance start end and end end of the clamping conveyance device Since the same amount of handling depth adjustment can be obtained even though the amount of movement is halved, the handling depth adjustment range can be widened even though the movement of the entire clamping and conveying device is small.

However, when adjusting the handling depth when baton-touching the above-mentioned reaped husks to the feed chain or when clamping the reaped husks, the handling depth can be adjusted only at the end of the conveyance or the beginning of the conveyance of the clamping and conveying device. In the case of this seesaw set, the movable configuration is restricted at both ends of the transport, so for example, if the starting end is restricted, the ending end will inevitably swing. Therefore, when considering the overall structure of the combine harvester, it is actually not possible to have a very wide range of adjustment of the handling depth. Since this has various effects on the start and end of the conveyance, precision is required, leading to an increase in costs.

Therefore, as a means to eliminate the drawbacks of the above-mentioned seesaw set, a technique described in, for example, Japanese Utility Model Publication No. 12354/1982 is known.

In this device, the holding and conveying device is divided into a front half and a rear half, and the first half is used as a seesaw set, and the rear half can be changed in relative angle with respect to the end of the first half.

However, with this structure, when feeding the shell culm to the threshing device in a horizontal position, the attitude of the shell culm is changed at the starting point of the clamping conveyance (the receiving point), so the handling depth cannot be adjusted. Sometimes, the location where the clamping position is changed and the location where the posture is changed overlap, and therefore, as the handling depth is adjusted, the joint position of the clamping and conveying device relative to the lateral conveying device changes, and this As a result of forcibly changing the posture of the shell culm at the joint, the bridge has the unavoidable drawback that the posture of the shell culm tends to be disturbed during transportation.

In view of the above-mentioned circumstances, the present invention adjusts the handling depth at the starting and ending ends of the clamping and conveying device. It is an object of the present invention to provide a handling depth adjusting device for a combine harvester, which can ensure the jointing of the bridge and can also smoothly change the posture of the culm.

The characteristic structure of the handling depth adjustment device for a combine harvester according to the present invention is that it is installed between the reaping device and the threshing device in the combine, and is an underchain type feed chain conveyor in which the threshing device is equipped with the harvested husk. A clamping and conveying device that clamps and conveys up to the starting end is configured to be able to swing in a seesaw manner around a horizontal support shaft that is approximately parallel to the rotation axis of the feed chain at an intermediate position of the conveyance, and the horizontal support The relative angle around the horizontal support shaft between a portion of the conveying device in front of the conveyance and a portion of the conveying device behind the conveyance can be freely changed and fixed, and the portion of the conveying device behind the conveyance is relative to the feed chain. Furthermore, the clamping and conveying surface in the conveyor section at the front of the conveyor is oriented vertically to grip and convey the culm in a substantially upright position, and the conveyor at the rear of the conveyor is arranged so as to be located on the opposite side from the handling cylinder. The clamping and conveying surface of the device part is configured to face in the lateral direction so as to clamp and convey the shell culm in a sideways posture, and the upper side of the feed chain is configured to receive and transfer the conveying shell culm from the conveyor part at the rear of the conveyance. This is because a clamping rail that clamps the shell culm between the feed chain and the feed chain is provided at a position rearward of the transport starting end of the feed chain.

With this configuration, by changing the relative angles of the front and rear conveyor parts around the horizontal support shaft, the handling depth adjustment amount when holding the reaped culm and the baton touch of the culm to the feed chain can be adjusted. The handling depth adjustment amount can be changed separately for each type.

In other words, by changing the position of the starting end side of the clamping and conveying device in the length direction of the culm in the upright position, the handling depth is adjusted by changing the clamping position, and then the terminal end side of the clamping and conveying device is changed. , by vertically approaching and approaching the feed chain, for example, by lowering the terminal end side of the clamping and conveying device, the culm is pulled out from the threshing device, and the receiving position relative to the feed chain is changed. The depth of treatment is handled separately.

As a result, the transport start end side or the end end side, which has flexibility in movement and can allow a large amount of handling depth adjustment, is guaranteed, while the end part side or the start end side, which has no flexibility in movement and cannot have a large amount of handling depth adjustment, is guaranteed. can.

Therefore, although the clamping and conveying device as a whole swings like a see-saw set, the relative angles of the front and rear parts of the device can be changed freely. While reliably absorbing restrictions on the movable configuration of the clamping and conveying device due to errors, etc., the handling depth adjustment range can be widened to smoothly and reliably clamp the cut husk and touch the baton to the feed chain.

Moreover, since the fulcrum for swinging the seesaw and the fulcrum for changing the relative angle are shared, as in the technical means described in Japanese Utility Model Publication No. 48-12354, the fulcrum for swinging the front half of the clamping and conveying device is The structure is extremely simple, with fewer movable fulcrums compared to the case where a fulcrum is provided to swing the rear half relative to the front half.

Furthermore, by configuring the culm posture to be changed midway through the clamping and conveying device, in other words, by configuring the posture change location and the clamping position change location, clamping can be done by clamping, and posture change can be changed by changing posture. It is easy to adopt a structure that allows each function to be performed well, and thereby the posture of the culm can be changed well.

Furthermore, by configuring the horizontal support shafts, which serve as pivot points for the front and rear parts of the clamping conveyance device, to be approximately parallel to the rotation axis of the feed chain, the rear part of the clamping conveyance device is By pushing down to largely expose the conveying surface of the feed chain, it is possible to cut corners using the threshing device mounted on the combine in an extremely safe and easy manner.

Examples will be described below based on the drawings.

Reference numeral 1 denotes a reaping device constructed at the front part of the machine body equipped with a pair of left and right traveling crawlers 5, 5, and is composed of a planted culm lifting device and a cutting blade 1B.

Reference numeral 2 denotes a threshing device mounted on the machine body, and has an underchain type feed chain 3 positioned along the lateral sides of the machine body.

Reference numeral 4 denotes a clamping and conveying device that clamps the base of the culm harvested by the reaping device 1 and conveys it to the starting end of the clamping conveyance of the feed chain 3, and this is provided at an intermediate point of the conveyance. , the sprocket shaft that drives the feed chain 3 (
It is configured to be able to swing like a seesaw around a horizontal support shaft (fulcrum) R that is substantially parallel to the fulcrum (not shown), and the conveying device portion 4A that is forward of the conveying point from the fulcrum R is held on its clamping conveyance surface. A rotary chain 4Aa whose conveying surface is directed in the vertical direction so as to sandwich and convey a substantially vertical culm, and this rotary chain 4Aa.
and a clamping rail 4Ab that elastically presses the shell culm, and the transport device portion 4B behind the fulcrum R is fixed to the transport surface so as to clamp and transport the shell culm in a sideways posture. It is composed of a rotating chain 4Ba that is oriented laterally, and a clamping rail 4Bb that elastically presses the culm against the rotating chain 4Ba.

The relative angles of the two conveying device parts 4A, 4B around the fulcrum R are configured to be changeable and fixed, and the two conveying device parts 4A, 4B are such that the conveying device part 4B on the rear side thereof is It is arranged so as to be located on the opposite side of the feed chain 3 from the handling cylinder in the threshing device 2.

Reference numeral 6 denotes a tip conveying device that locks the tip of the shell culm being conveyed by the clamping conveyance device 4 and conveys it to the threshing device 2 side; 7;
is a clamping rail that elastically clamps the culm being conveyed by the feed chain 3 along the handling opening of the threshing device 2, and this clamping rail 7 is used for the conveyance at the rear of the conveyance. It is configured to avoid the conveyance start end position of the feed chain for receiving the conveyance shell culm from the device part 4B, and to come into elastic pressure contact with the upper side of the feed chain 3 at the rear thereof.

The handling depth adjusting device in the combine harvester configured as described above is configured to swing the shell culm clamping position by the clamping and conveying device 4 and the shell culm clamping position by the feed chain 3 by swinging around the fulcrum H in a seesaw manner. In addition to adjusting the handling depth by changing the length direction of the culm, each of the front and rear conveyor parts 4
By changing the relative angles of A and 4B around the fulcrum R, the center of rocking of each device part 4A and 4B due to seesaw rocking is changed, and the handling depth adjustment range due to seesaw rocking is changed. .

In addition, as shown by the imaginary line in FIG. 1, the rear device part 4B
By positioning the feed chain 3 extremely downward to expose the conveyance start end of the feed chain 3, the onboard threshing device 2 is used to cut corners.

[Brief explanation of the drawing]

The drawings show an embodiment of the handling depth adjusting device for a combine harvester according to the present invention, and FIG. 1 is a side view showing the entire combine harvester, and FIG. 2 is a side view. 1... Reaping device, 2... Threshing device, 4
......Pinching and conveying device, 4A, 4B...--Transporting device part, R...Fully point.

Claims (1)

[Scope of utility model registration request] A clamping and conveying device 4 is installed between the reaping device 1 and the threshing device 2 in the combine, and clamps and conveys the harvested husk to the starting end of an underchain type feed chain 3 equipped with the threshing device 2. A portion of the conveying device is configured to be able to swing in a seesaw manner around a horizontal support shaft R that is approximately parallel to the rotational axis of the feed chain 3 at an intermediate location of the conveyance, and is further forward of the conveyance than the horizontal support shaft R. 4A and the conveying device section 4B at the rear of the conveyance around the horizontal support axis R can be freely changed and fixed, and the conveying device section 4B at the rear of the conveyance acts as a handling cylinder with respect to the feed chain 3. are arranged so as to be located on the opposite side, and furthermore, the clamping and conveying surface of the conveying device section 4A at the front of the conveyance is oriented in the vertical direction to pinch and convey the culm in a substantially upright position, and the conveying device section 4B at the rear of the conveying The clamping and conveying surface of the feed chain is oriented laterally in order to clamp and convey the shell culm in a sideways posture, and the conveyor culm is connected to the upper side of the feed chain 3 from the conveying device section 4B at the rear of the conveyance. Feed chain 3 for
A handling depth adjustment device for a combine harvester, characterized in that a clamping rail 7 is arranged to clamp the shell culm between the feed chain 3 and the feed chain 3 at a position rearward of the transport starting end of the combine harvester.