JPH0337382Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] This invention relates to a raking conveyance device that is mainly used in the cut grain culm conveyance section of a combine harvester for conveying the ears over a short distance and for merging the ears. ,
As shown in FIG. 5, a plurality of conveyor claws are pivotally connected to the circumference of the rotary disk so as to be able to rise and fall freely, and the bases of the conveyor claws are supported in contact with arcuate guide rails to provide a predetermined position in the rotational direction of the disk. This invention relates to an improvement in a device configured to stand up in a conveying posture within a range.

[Conventional technology]

Conventionally, in the above-mentioned scraping and conveying device, the guide rail 3' was constructed of a fixed rigid member.

[Problem that the invention attempts to solve]

In the above-mentioned conventional device in which the guide rail 3' is made of a fixed rigid material, when the device is clogged with stem culms and an abnormal load is applied to the conveying claws 2, the conveying claw 2 is unable to handle the abnormal load. There are problems in that the claw 2 cannot be released, causing damage to the transport claw and the claw fulcrum, and strain on the drive section of the rotary disk 1. Therefore, it is desirable to introduce a function to absorb abnormal loads.
By the way, in a conveyance device in which an undulating pawl that is pivotally supported on a chain is operated to raise up in a straight conveyance path, a guide rail rod for raising the pawl is supported so that it can be elastically retracted, so that when an abnormal load is applied to the undulating pawl, the pawl is raised. There is a known means for relieving the load by elastically receding and lying down together with the rail, and it is conceivable to apply this means to the above-mentioned scraping and conveying device.

However, in this scraping and conveying device, the direction of the reaction force from the claws acting on the arc-shaped guide rail changes depending on the claw position, so it is not possible to simply elastically support the arc-shaped guide rail. However, the guide rail could not be elastically retracted appropriately over the entire conveyance range.

The present invention was developed in view of this situation, and by improving the arc-shaped guide rail, the guide rail can be elastically retracted appropriately over the entire conveyance range, and abnormal loads can be absorbed well. The purpose is to

[Means for solving problems]

The structure of the present invention to achieve this purpose is as follows:
To explain using FIG. 1 corresponding to an embodiment, the stem culm scraping and conveying device according to the present invention has a plurality of conveying claws 2 pivotally connected to the circumference of a rotary disk 1 so as to be able to rise and fall freely, and the stem culm scraping and conveying device according to the present invention The stem culm raking and conveying device is configured such that the base 2b of the claw 2 is brought into contact with and supported by an arc-shaped guide rail 3 to stand up in a conveying posture within a predetermined range in the rotational direction of the disk, and the guide rail 3
is configured to be able to swing freely within a certain range in the inward and outward directions around a fulcrum 4 at its front end, and a spring 5
The guide rail 3 is characterized in that it is biased outwardly by the guide rail 3, and that the guide rail 3 is made of an elastic material.

[Effect]

In such a stem culm scraping conveyance device, when an abnormal load is applied to the conveyance claw 2 in the area near the fulcrum 4 of the guide rail 3, the guide rail 3 swings about the fulcrum 4, and as a result, the conveyance is interrupted. Claw 2 can be released. On the other hand, if an abnormal load is applied to the conveying claw 2 in the area opposite to the fulcrum 4 of the guide rail 3,
As a result of the guide rail 3 itself made of an elastic material bending by overcoming the outward rocking urging force of the spring 5, the conveyance claw 2 can be released.

[Effect of idea]

Therefore, by using the stem culm scraping and conveying device of the present invention, even if an abnormal load is applied to the conveying claw at any position in the conveying range, the conveying claw can be released from the abnormal load, improving durability. We were able to achieve this goal.

〔Example〕

FIG. 1 shows a plan view of the stem culm scraping and conveying device according to the present invention. In the figure, 1 is the rotating shaft 1a
It is a rotary disk that rotates around the center, and a plurality of conveyance claws 2, each of which has a hook-shaped integrated base 2b and a conveyance protrusion 2c, are pivotally connected to its circumferential portion. This conveying claw 2 has its base 2b abutted and supported by an arc-shaped guide rail 3 provided so that its position changes relative to the rotary disk 1, so that the rotating shaft 2a can be moved. It is configured to be rotated about the center and erected in a conveyance position within a predetermined range in the disk rotation direction. The guide rail 3 is made of an elastic material, and its front end is supported by a rotatable fulcrum 4, and its rear end is urged to swing outward by a spring 5. . Note that the spring 5 has one end attached to a locking member 5 provided at the rear end of the guide rail 3.
In other words, the retaining rod 5c is locked by the locking member 5a and the other end thereof is inserted and supported by the rotatable insertion support member 5b, so as not to separate from the guide rail 3. The insertion support member 5b
It is kept between the two.

In such a stem culm raking and conveying device, if an abnormal load is applied to the conveying claw 2 in the area near the fulcrum 4 of the guide rail 3 (area A in FIG. 1), the load is applied to the conveying claw 2 as shown by the two-dot chain line in FIG. As a result, the fulcrum 4 rotates and the guide rail 3 swings about the fulcrum 4, so that the conveying claw 2, whose base 2b is supported by the guide rail 3, is almost in a lying state. It becomes a state of escape.

In addition, if an abnormal load is applied to the conveying claw 2 in the region opposite to the fulcrum 4 of the guide rail 3 (region B in FIG. 1), as shown in FIG. 2, the guide rail 3 made of an elastic material As a result of the conveying claw 2 overcoming the outward rocking urging force of the spring 5 and bending while compressing the spring 5, the conveying claw 2 becomes close to a lying state and escapes.

In any case, when the abnormal load is removed, the guide rail 3 returns to its original state due to the outward swing biasing force of the spring 5, so that the base 2b of the conveying claw 2 is aligned with the guide rail. 3 to return to the upright state.

A specific example in which the device of the present invention is used in a three-row combine harvester will be described below with reference to FIGS. 3 and 4.

As shown in FIG. 3, at the front of the vehicle body 20, which is equipped with a pair of left and right crawler traveling devices 21, a threshing device 22, a control section 23, an engine 24, etc., a stem culm pulling device 31 is installed. Reaping device 3 that cuts the base
2. The reaping pre-processing section 30, which is equipped with a transport mechanism 33 for transporting the reaped stem culms backward to the threshing feed chain 22a installed on the lateral outside of the threshing device 22, is capable of vertically swinging up and down about the fulcrum P. They are connected to form a combine.

As shown in FIG. 4, the conveyance mechanism 33 is provided above the reaping device 32, and includes rotary packers 331a and 3 that each scrape the three reaped stem culms backward.
31b, 331c and the rotary packers 331a, 331c at their left and right ends, and a second conveyance mechanism 332 that connects the harvested stem culms in an upright position and conveys them rearward and upward through two conveyance paths on the left and right. and the first transport mechanism 333 as the main components. Each of the transport mechanisms 332 and 333 includes second and first stock head clamping and transporting devices 332a and 333 for transporting the harvested stem culm while clamping the stock base, respectively.
a, and second and first ear tip locking and conveying devices 332b and 33 for conveying while locking the tips of the harvested stem culms.
It consists of 3b. In addition, 34 is a conveyance device for relay conveying the reaped stem culm from the said conveyance mechanism 33 to the said threshing feed chain 22a.

In the present invention, the stem culm scraping and conveying device corresponding to the second ear tip locking and conveying device 332b has an improved structure as described in detail with reference to FIGS. 1 and 2.

[Brief explanation of the drawing]

1 and 2 show an embodiment of the stem culm scraping and conveying device according to the present invention. The figure is a plan view of a state where an abnormal load is applied on the side opposite to the fulcrum. FIG. 3 is a side view of the front part of the combine harvester, FIG. 4 is a schematic plan view of a stem culm conveying mechanism, and FIG. 5 is a plan view showing a conventional stem culm raking and conveying device. 1... Rotating disk, 2... Conveying claw, 3b... Base,
3... Guide rail, 4... Fulcrum, 5... Spring.

Claims (1)

[Scope of utility model registration request] A plurality of conveyor claws 2 are pivotally connected to the circumference of the rotary disk 1 so as to be able to rise and fall freely, and the base portion 2b of the conveyor claws 2 is supported in contact with an arc-shaped guide rail 3 to convey the disk within a predetermined range in the rotational direction of the disk. The stem culm scraping and conveying device is configured to stand in an upright position, and the guide rail 3 is configured to be able to swing freely in and out within a certain range around a fulcrum 4 at the front end thereof, and a spring 5 A stem culm scraping and conveying device which is swing-biased outward by a stem culm and whose guide rail 3 is made of an elastic material.