JPH0226923B2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention provides a system in which a pulling device, a reaping device, and a reaped grain stalk are attached to the front part of a traveling vehicle body equipped with a threshing device in a state where the ears are locked and the grain stalks are held in place. The present invention relates to a combine harvester connected to a reaping pre-processing section equipped with a reaped grain culm transport device that transports and supplies reaped grain culm to a threshing feed chain in a horizontal position.

[Prior art]

In general, the above-mentioned threshing apparatus is configured to supply the harvested grain culm to a single large-diameter handling cylinder, which has caused the following problems.

[Problem that the invention seeks to solve]

In other words, the large-diameter handling cylinder exerts a handling action by wrapping around the supplied grain culm, so in both the lower handling method and the upper handling method, the effective handling action range is limited, and the insertion of the supplied grain culm There are restrictions on quantity. Further, it is preferable that the grain culm to be supplied has a culm direction perpendicular to the rotational axis of the handling barrel, and the grain tip is in a separated state. Therefore, in the past, the lifting path of the lifting device was set long, and the grain culm was raked up to the tip of the grain using a locking claw provided on the device, and the tip was handled within the path, and the angle of the entire lifting device with respect to the ground was adjusted as much as possible. By setting the angle close to 90 degrees, the front-to-back length of the aircraft was reduced, and the device was prevented from becoming larger.

However, when the lifting device is installed as described above, the rearward feed component of the driving speed of the locking pawls etc. installed on the device becomes small, so if this component is made to match the traveling speed of the aircraft, the locking will occur. The driving speed of the claws, etc. in the pulling path increases, and the tip of the grain culm is unnecessarily loosened, which causes a problem in that the grain tends to shed before the grain culm is harvested.

Furthermore, since there is a restriction on the amount of grain culm inserted as described above, a mechanism for adjusting the handling depth is required, so it becomes necessary to provide a movable part for adjusting the handling depth in the conveying device. There is also the problem that the drive system becomes complicated.

In addition, in order for the harvested grain culm conveying device to change the grain culm to a sideways posture during conveyance, the ear tip locking conveyance mechanism and the stock head clamping conveyance mechanism are normally configured to be separated from each other as they move toward the lower side of the conveyance. In addition, since the handling depth adjustment mechanism is configured to adjust the grain culm delivery distance by moving the common stock head clamping and conveying mechanism away from or approaching the feed chain to adjust the handling depth,
When transporting grain culms with a large volume, the problem of pulling out the grain culm from the stock clamping and transporting mechanism due to the locking force of the ear locking and transporting mechanism occurs due to changes in the posture of the grain culm and adjustment of handling depth. There were cases where this occurred.

In addition, in the case where the front end of the harvested grain culm conveying device is configured to swing up and down to adjust the handling depth, the vertical dimensions of the lifting device must be increased to ensure this swing range. There is a problem that the device becomes larger.

The present invention has been made in view of the above-mentioned circumstances, and has an object to provide a combine harvester in which the above-mentioned problems are solved by rational modification of the threshing device.

[Means to solve the problem]

The present invention is characterized in that the threshing device is driven and rotated around an axis along the grain culm conveyance direction, and the grain culm, which is held and conveyed by the feed chain in a horizontally suspended position, is An ear locking and conveying mechanism configured to handle and thresh toward the ear side with a large number of handling rotors arranged in parallel with their rotation trajectories overlapping each other in the grain direction, and comprising the harvested grain culm conveying device; At a point where the distance from the stock head clamping conveyance mechanism is set and fixed at a substantially constant value over the entire length of the conveyance path, and the starting end of the ear tip locking conveyance mechanism is set near the height of the lifting end of the lifting device. The functions and effects are as follows.

[Effect]

In other words, as mentioned above, the threshing device is composed of a large number of handling rotors, and since the supplied grain culm is acted upon by each handling rotor group in the direction toward the ear tip, the grain culm is Even if the grain is fed in a direction slightly deviated from the direction perpendicular to the rotation axis of the grain, the culm is stretched, so there is no deterioration in threshing performance.
Furthermore, even if the tips are not in a separated state, they are handled by the group of rotating bodies, so there is no need to pre-sort the tips. Similarly, since the threshing device is composed of a large number of handling rotors, threshing can be performed without any problem even when the amount of grain culm inserted is not constant, so there is no particular need for a handling depth adjustment mechanism.

In addition, for the above reasons, it is possible to set the interval between the ear tip locking conveyance mechanism and the stock clamping conveyance mechanism of the harvested grain culm conveyance device as described above, so that the grain culm is In addition, there is no need to take into account the swinging range of the front end of the harvested grain culm conveying device when constructing the pulling device.

In addition, since the starting end of the ear tip locking and conveying mechanism is set at the height of the lifting end of the lifting device, the grain culm can be transferred smoothly at this location. Further, since the threshing device is composed of a large number of handling rotors, the diameter of each handling rotor can be small, and the vertical dimensions of the threshing device can be reduced.

〔Effect of the invention〕

Therefore, it is not necessary to sort the grain culm before supplying it to the threshing device, and there is no need to take into account the swinging range of the front end of the harvested grain culm conveying device when adjusting the handling depth. The angle can be set small, and the vertical dimensions of the lifting device can be made small to such an extent that the locking claws etc. do not act on the tips of the ears. As a result, the lifting device is made smaller and grain culms are less likely to shed.

Further, since a handling depth adjustment mechanism is not required, the structure of the transmission system of the harvested grain culm conveying mechanism is simplified, and the number of parts and manufacturing costs are reduced.

In addition, since the grain culm is not pulled out within the harvested grain culm transportation mechanism, the delivery from the harvested grain culm transportation mechanism to the feed chain is ensured, and the generation of long straw or large amounts of dust in the handling room is reduced. Ru.

In addition, since the grain culm is smoothly delivered from the raising device to the harvested grain culm transport mechanism, the attitude of the grain culm is less likely to deteriorate within the transport path, and threshing performance is less likely to be degraded.

Furthermore, since the vertical dimensions of the threshing device can be reduced, the machine body can be made more compact, and a grain tank can be mounted on the top of the threshing device.

As described above, it is difficult for particles to be shed before they are supplied into the handling room, the number of parts is reduced, and manufacturing costs are reduced.
A combine harvester that reduces the generation of long straw and large amounts of dust in the handling room, reduces deterioration in threshing performance due to deterioration of grain culm posture, has a more compact machine, and can mount a grain tank on the top of the threshing device. It has now been provided.

〔Example〕

Embodiments of the present invention will be described below based on the drawings.

As shown in FIGS. 1 to 4, a combine harvester is constructed in which a reaping pretreatment section B is attached to the front end of a crawler traveling machine body 1 equipped with a threshing device A so as to be able to swing up and down around an axis P using a hydraulic cylinder 2. has been done.

The reaping pre-processing section B is composed of a pulling device 3, a clipper-type reaping device 4, a horizontal conveying device 5, a harvested grain culm conveying device 6, etc. The lifting device 3 has a relatively small angle to the ground. By means of locking claws 3a provided on the lifting device 3, the planted grain culms are raised without acting on the tips of the grains and at the same time sent rearward. The lateral conveyance device 5 is fed by the lifting device 3 and the grain culm cut by the reaping device 4 is sent to the left and right center and delivered to the conveyance device 6.

The conveying device 6 transports the harvested grain culm while keeping it in a sideways position, and also feeds the feed chain 7 of the threshing device A.
It is composed of a tip locking conveyance mechanism 8 and a stock head clamping conveyance mechanism 9 so that the stalks can be delivered to the plant. The tip locking conveyance mechanism 8 has sprockets 10 and 11 arranged in the front and rear.
A chain 8b to which a large number of locking pawls 8a are attached is wound around the chain 8b, and the tip of the ear can be locked and conveyed by the locking pawl 8a and the guide rail 12.
is arranged so as to be close to and at the same level as the conveying end of the lifting device 3, so that the grain culm can be transferred smoothly. In addition, the stock head holding and conveying mechanism 9 is configured such that a holding chain 9a is wound around three sprockets 13, 14, and 15 arranged so as to be tapered in the front, so that the stock head can be held and transported by the holding chain 9a and the holding rail 16. has been done.

Further, the two chains 8b and 9a are arranged so that their respective winding surfaces are parallel to each other, and the chain 8b is arranged in the direction of the machine feed chain 7 with respect to the clamping chain 9a on the upper side in the conveyance direction, and also in the conveyance direction. The chains 8b are deviated with respect to the clamping chain 9a in the direction opposite to the machine feed chain 7, so that the interval between the clamping position and the locking position of the grain culm is set to be approximately constant. In other words, as shown in FIGS. 2 and 4, when viewed in the direction of the sprocket axis, the tip locking conveyance mechanism 8 and the stock clamping conveyance mechanism 9 intersect in a substantially X-shape, and the conveyance paths are intersected by E, F, and G in the figures. The distance between the clamping position and the locking position shown by is approximately constant at the top, middle, and bottom of the conveyance.

Further, the sprocket 11 and the sprocket 15 are disposed coaxially and driven by a single drive shaft 17, and the clamping conveyance chain 9a is disposed so as to be close to the feed chain 7 at the conveyance end.

The threshing device A is composed of four handling rotors 18 arranged in a handling chamber D, a filter material 19 below the handling chamber D, a sorting section 20 further below, and the like, and each of the handling rotors 18 The handling rotors 18... are arranged in parallel so that they rotate about their axes along the grain culm conveying direction, and the rotational trajectories of their respective protruding handling teeth 18a overlap with each other in the left-right direction of the machine. By supplying grain culms upward, the grain culms are threshed while being combed in the direction of the ears, and both long and short culms can be threshed well without adjusting the handling depth.

A grain tank 21 is mounted on the upper part of the threshing device A, and is configured to store grains from the sorting section 20 via a grain lifting device 22, so as to maintain a good weight balance in the left and right direction of the machine. It's getting old.

[Another example]

In this embodiment, in order to keep the interval between the tip locking conveyance mechanism and the stock clamping conveyance mechanism substantially constant over the entire length of the conveyance path, the respective conveyance paths intersect in a substantially X shape when viewed in the direction of the sprocket axis. However, in the present invention, instead of this, the mechanisms are arranged so that they are vertically spaced apart from each other as they move toward the front when viewed from the side of the machine. It is also possible to maintain the above-mentioned interval constant by setting the position so as to face the direction, or to change the position to a sideways position.

In addition, although this embodiment was configured to supply the grain culm above the handling rotary body group, instead of this, a threshing device configured to supply the grain culm below the handling rotary body group, or The present invention may also be implemented by mounting a threshing device on the machine body, which is configured to stack vertical handling rotary body groups and supply grain culm between the upper and lower handling rotary body groups.

[Brief explanation of drawings]

The drawings show an embodiment of the combine harvester according to the present invention, in which Fig. 1 is an overall side view, Fig. 2 is a schematic plan view of the pre-reaping processing section, Fig. 3 is a longitudinal sectional front view of the handling chamber, and Fig. 4 is a general side view.
The figure is a schematic perspective view showing the grain culm conveying state in the harvested grain culm conveying device. 3... Pulling device, 4... Reaping device, 6... Reaped grain culm conveying device, 7... Feed chain, 8...
...Ear tip locking conveyance mechanism, 9...Stock head clamping conveyance mechanism,
18... handling rotating body, A... threshing device, B... pretreatment section.

Claims (1)

[Claims] 1 At the front part of the traveling vehicle body equipped with the threshing device A, the lifting device 3, the reaping device 4, and the ears of the harvested grain culm are latched,
Threshing feed chain 7 by transporting the stock in a pinched state
This is a combine harvester in which a reaping pre-processing section B is connected to the reaping pre-processing section B, which is equipped with a reaped grain culm conveying device 6 that supplies the reaped grains in a sideways posture, and the threshing device A is connected to the feed chain 7.
Grain culms, which are held and conveyed in a horizontal rack position, are driven and rotated around an axis along the grain culm conveyance direction, and a large number of handlers are arranged in parallel with each other's rotational trajectory overlapping each other in the direction of the grain culm body. The rotary body 18 is configured to handle and thresh grain toward the grain end side, and the interval between the ear tip locking conveyance mechanism 8 and the stock head clamping conveyance mechanism 9, which constitute the harvested grain culm conveyance device 6, is determined by the entire conveyance path length. The combine harvester is set and fixed at a substantially constant level over the entire length of the harvester, and the starting end of the tip locking and conveying mechanism 8 is set close to the height of the lifting end of the lifting device 3.