JPH0446525Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The present invention processes waste culms conveyed from the threshing section through a post-processing section such as a binding machine located at the rear and a post-processing section such as a cutting machine located below. This invention relates to a switching guide device for a culm in a combine harvester that can selectively switch and supply the culm.

[Prior art and problems to be solved by the invention] Generally, in this type of combine harvester, the threshed waste culm is fed to the rear as it is and is subjected to post-processing in a post-processing section such as a tying machine or dropper. A switching guide is provided on the conveying end side of the culm conveyor so that it can move vertically. ing.

By the way, in this device, when the waste culm is conveyed toward the rear post-processing section side on the switching guide in the downwardly moving state, it is necessary to hold the waste culm between the waste culm conveying body and the waste culm conveying body. Therefore, in order to cope with changes in the amount of culm ejected, a large-sized material such as a stalk culm clamping member installed on a pre-processing conveyor or a threshing conveyor, which can be elastically displaced while firmly supported on the machine body side, is used in the switching guide. It is proposed to assemble a sturdy culm clamping member, but since the switching guide moves up and down to guide the culm switching, this itself is as simple as a plate-like body and weak in strength. As a result,
It is practically difficult to install a strong and large-sized culm holding member as described above.

Therefore, conventionally, attempts have been made to provide the switching guide with a clamping rail formed by fixing a plate, or a guide rod with elasticity in which the conveyance start end side is supported and the rear end side of the support part swings. There is.
However, in the former method, since the clamping and conveying surface is fixed, the clamping force changes greatly when the amount of discharged culms increases or decreases, and as a result, there is a problem that smooth clamping and conveyance of discharged culms cannot be carried out. . On the other hand, in the latter case, elastic clamping and conveyance is possible within a certain range of culm discharge, but the guide rod is only a simple device that supports the starting end of conveyance, so When the amount of culms becomes large, a large force acts on the guide rod to forcefully push it down, causing the guide rod to become deformed.

[Means for Solving the Problems] The present invention was devised in order to eliminate these drawbacks in view of the above-mentioned actual situation, and provides a culm transporter that transports threshed culms to a post-processing section. At the end of the conveyance, there is a lower moving position located below the culm conveyor to guide the conveyance of the culm to the rear post-processing section, and a lower moving position which is located at a cross position with respect to the culm conveyor to carry the culm. In a combine harvester that is provided with a switching guide that can be switched between an upward movement position that guides the fall to the lower post-processing section side, the switching guide has a vertical movement that allows the removal of culms to be carried so as not to come into contact with the waste culm conveying body. In addition to providing clamping rails for clamping the discharge culm disposed close to the left and right sides of the body, and a guide rod having elasticity that supports the conveyance start end side and allows the conveyance end side to swing up and down with respect to the support part, The exhaust culm clamping part of the clamping rail has a parallel clamping part that is approximately parallel to the conveying direction of the exhaust culm transporting body and spaced apart from the exhaust culm transporting body so as to be able to transport a large amount of culm, and the parallel clamping part is On the continuous conveyance starting end side, the guide rod is formed of an inclined first guide part corresponding to the inclined clamping part of the clamping rail, and a parallel clamping part. and a second guide portion corresponding to the culm conveyor, and these guide portions are arranged closer to the culm conveyor side than the respective gripping portions of the corresponding gripping rails, so that the switching guide portion in the downward movement state is When the amount of waste culm is small, the waste culm being conveyed toward the post-processing section is elastically held and transported by the second guide part located closer to the waste culm transport body than the parallel holding part. When the amount of discharged culm is large, the first guide part is strongly pushed by the discharged culm, and the second guide part is housed in the parallel clamping part and is moved by the parallel clamping part directly facing the discharged culm conveyor. The device is characterized in that it is configured so that it can be conveyed while holding the device.

With this configuration, the present invention is a culm holding member that is attached to the culm switching guide, and is able to carry out ideal culm conveyance corresponding to the amount of culm being ejected. be.

[Example] Next, the present invention will be described in more detail based on an example shown in the drawings. In the drawing, 1 is a pre-processing section of a combine harvester, and 2 is a threshing section. Stem culms that have been harvested in the pre-processing section 1 and lifted and conveyed are threshed in the threshing section 2. The waste culm discharged from the threshing unit 2, that is, the waste culm, is transferred to a waste culm conveying body 3 provided at the rear of the threshing unit 2 so that the further back the culm is, the more the waste culm is inclined toward the cut field side, that is, the ear tip side. The material is supplied and transported to the rear post-processing section. In this embodiment, the post-processing section is composed of a culm cutting machine 4 disposed below the rear side of the culm conveying body 3 and a culm binding machine 5 disposed at the rear of the culm conveying body 3. However, in the culm cutting machine 4, cutting blades 6 are arranged side by side with a predetermined interval left and right on a rotation axis in the left and right direction substantially perpendicular to the direction of movement of the machine. As will be described later, the exhaust culm that is supplied falling from the conveyance terminal side is cut into small pieces and discharged from the machine through a lower discharge port 7. On the other hand, the waste culm binding machine 5 binds the waste culms transported rearward by the waste culm carrier 3 into predetermined amounts and releases them toward the mowed field at the rear of the machine. ing.
In addition, 8 is a needle, 9 is a packer, 10 is a culm scraping body, 11 is a tubercle, 12 is a door, and 13 is a sweeper.

Reference numeral 14 denotes a switching guide provided on the transport end side of the culm transporting body 3. The switching guide 14 rotates the culm transporting body 3 around a support shaft 15 that is approximately parallel to the axis of the cutting blade 6. Located at the lower side, the upper side of the culm cutting machine 4 is closed, and the culm is held and conveyed to the culm binding machine 5 side by the later-described clamping rails 16, 17 or guide rods 21, 22 and the culm conveyor 3. The lower movement position (solid line position in Fig. 3), which crosses the culm conveyor 3 when viewed from the side, opens the upper side of the culm cutting machine 4 and guides the culm to fall toward the culm cutting machine 4 side. The switch lever 14a can be selectively switched to the upper movement position (the imaginary line position in FIG. 3). That is, the switching guide body 14 is composed of a plate-like body divided into left and right parts at a portion corresponding to the culm transport body 3, and
The rear edge side is pivotally supported on a support shaft 15 fixed to the body side, so that the front edge side can integrally swing up and down. Moreover, the edge of one half 14b on the tip side of the switching guide 14 facing the culm carrier 3 is larger than that of the other half 14c on the stock base side so as not to contact the culm carrier 3 when the switching guide 14 moves upward. It faces the culm conveyor 3 with a gap therebetween, so that the switching guide 14 can be displaced to the above-mentioned upward movement position and downward movement position without contacting the exhaust culm conveyor 3. It's summery.

Numerals 16 and 17 are clamping rails arranged on both the left and right sides of the culm conveyor 3, that is, on the plant head side and the tip side. It is fixed to the other half 14c of the switching guide on the stock side so as to be parallel to the transport direction of the transport body 3. In addition, the tip-side clamping rail 17 is disposed close to the culm conveyor 3 and parallel to the conveyance direction of the culm conveyor 3, like the stock side clamping rail 16, but it The proximal end of the tip-side clamping rail 17 is fixed to the shaft 15 via a bracket 18 to a fulcrum shaft 19 having a rotation axis substantially perpendicular to the conveyance direction of the culm conveyor 3, and one end thereof is fixed to a switching guide. The other end of the operating rod 20 fixed to the tip half 14b of
By penetrating through A, the tip-side clamping rail 17 can move in conjunction with the up-and-down movement of the switching guide 14 while maintaining a substantially parallel state with the culm conveyor 3 using the fulcrum shaft 19 as a fulcrum. It is designed to move up and down integrally without contacting the culm conveyor 3 in its posture. The upper edges of these clamping rails 16 and 17 facing the culm transport body 3 are approximately parallel to the conveying direction of the culm transport body 3, and are capable of holding the culm of the assumed maximum culm transport amount. Exhaust culm conveyor 3 for conveyance
A culm clamp formed by parallel clamping parts 16b, 17b that are spaced apart from each other, and inclined clamping parts 16c, 17c that are spaced apart from the culm transport body 3 toward the transport start end where the parallel clamping parts 16b, 17b continue. It is organized into sections.

Reference numerals 21 and 22 are guide rods formed of elastic rod-shaped bodies, and both upper and lower ends of the guide rods 21 and 22 extend rearward from a spiral intermediate portion 23. The base ends of the guide rods are fixed to the sides of the clamping rails 16 and 17 via tightening bolts 24. Further, the upper guide rod tip part is designed to be able to swing up and down approximately using the intermediate part 23 as a fulcrum, and the guide rod tip part has a length L on the intermediate part 23 side and has a length L on the intermediate part 23 side. ,1
Steeply inclined first guide portions 21a, 22a corresponding to the inclined holding portions 16c, 17c of No. 7, and a gentle inclination angle θ further rearward from the first guide portions 21a, 22a.
, the parallel clamping parts 16b and 17 are extended by a length M.
The second guide portions 21b, 22b corresponding to
1b and 22b are the corresponding holding parts 16, respectively.
c, 17c, 16b, and 17b, that is, closer to the culm conveying body 3 side. The guide rods 21 and 22 are arranged so that the rear end sides of the second guide portions 21b and 22b are connected to the chain 3a of the culm conveyor 3 when viewed from the side in an unloaded state where there is no culm.
They overlap in position, and are designed to clamp and clamp the culm being conveyed toward the culm conveying body 3 side. Moreover, in the guide rod of this embodiment, the elastic force of the tip side guide rod 22 is set to be weaker than that of the stock side guide rod 21.

In the embodiment of the present invention configured as described above, the culm discharged from the threshing section 2 and conveyed rearward by the culm conveying body 3 is moved when the switching guide 14 is switched to the lower position. The culm binding machine 5 binds the culms and discharges them to the rear of the machine, and when the switching guide 14 is switched to the upward position, the switching guide 14 binds the culms in the lower part. It is reliably guided down to the cutting machine 4 side, cut into pieces, and discharged from the discharge port 7 to the outside of the machine.

In this way, the culm is guided to either the rear culm tying machine 5 or the lower culm cutting machine 4 by switching the switching guide 14 up and down. Switch to the lower position and culm binding machine 5
When post-processing is performed by the culm binding machine 5, when the amount of culm is small, such as during low-speed reaping work, the culm is transferred to the culm binding machine 5 by the clamping rails 16,
This is because the second guide parts 21b, 22b of the guide rods 21, 22 located closer to the culm transport body 3 than the 17 parallel clamping parts 16b, 17b receive an elastic clamping action corresponding to the amount of culm transport. The culm tying machine 5 can be clamped and conveyed in an orderly manner without jamming or disturbing the posture.

On the other hand, when a large amount of waste culm is transported toward the waste culm binding machine 5 side, the guide rods 21 and 22 have first guide portions 21a and 22a that are strongly pushed downward by the waste culm. The second guide portions 21b and 22b are elastically deformed, thereby causing the second guide portions 21b and 22b to move toward the parallel clamping portion 16 shown in FIG.
b, 17b, and in this case, the parallel clamping portions 16b, 1 directly facing the culm conveying body 3.
7b ensures that the discharged culm is held and conveyed. Moreover, at this time, since the guide rods 21 and 22 are housed in the clamping rails 16 and 17, the clamping rails 16 and 17 of the guide rods 21 and 22
17 can provide effective protection, and even when the amount of discharged culms being conveyed is large, a large force acts on the guide rods 21 and 22, causing the guide rods 2 to
Inconveniences such as deformation of parts 1 and 22 can be reliably avoided.

As a result, if there is a small amount of culm, the guide rod 2
1, 22, and in the case of a large quantity, by clamping rails 16, 17. Although it is a culm clamping member, ideal culm conveyance corresponding to the amount of ejected culms can always be stably carried out.

Further, the guide rods 21 and 22 are connected to the clamping rail 16,
Since it is fixed to the side of the culm, the culm does not get pinched. Furthermore, the guide rod 21,
22 is the first guide part 21a, 2 on the side of the intermediate part 23;
Since the culm is held between the gently inclined second guide parts 21b and 22b, which are far from the intermediate part 23, instead of the guide rods 21 and 22, the force of holding the culm between the guide rods 21 and 22 is approximately constant, which improves the conveyance performance. becomes even better.

Furthermore, although the guide rods 21 and 22 of this embodiment perform a clamping action on the culm on both the left and right sides of the culm conveyor 3, the elastic force of the guide rod 22 on the tip side is greater than that on the plant base side. Because it is set weakly, the tip side, which is thinner and lighter and has lower rigidity than the stock side of the culm, bends significantly upwards as if the elastic forces of both guide rods 21 and 22 were the same. As with the stock side, there is no risk of the culm being caught and transported while maintaining a substantially horizontal position, and there is no inconvenience caused by the provision of the elastic guide rods 21 and 22 on both the left and right sides of the culm transport body 3. It can be made into something that is not there.

Note that when the switching guide 14 is positioned in the upward movement position, the clamping rails 16 and 17 are located on both the left and right sides of the culm transporting body 3, but in particular, the tip-side clamping rail 17 is located not on the support shaft 15 but on the discharging side. Since it rotates about the fulcrum shaft 19 that is substantially perpendicular to the culm carrier 3, the tip-side clamping rail 17 does not come into contact with the culm carrier 3 even if it is close to the culm carrier 3.

[Operation and Effect] In summary, since the present invention is constructed as described above, the amount of culm transported toward the rear post-processing section on the switching guide in the downward moving state is In the case of a small amount, the second guide portion of the guide rod located closer to the exhaust culm conveyor than the clamping rail receives an elastic clamping action corresponding to the amount of exhaust culm conveyance, and is thereby stably conveyed. On the other hand, when the amount of discharged culm becomes large, the first guide part of the guide rod is strongly pressed by the discharged culm, and the second guide part is elastically deformed to be housed in the parallel clamping part of the clamping rail. A large amount of discharged culms are then held and conveyed by the parallel holding parts of the holding rails.

As a result, when the amount of ejected culms is small, the culms are stably conveyed while being elastically clamped by the guide rods, and when the amount of ejected culms is large, they are supported by the pinching action of the clamping rails instead of the guide rods. When being transported, the guide rod can be effectively protected by the clamping rail, so that the guide rod can handle a small amount of culm while the clamping rail can handle a large amount of culm. Although it is a culm holding member that can be attached to the culm switching guide, which is difficult to ensure strength due to its structure, it can be used to simplify the structure by sharing the load, and it can also provide ideal culm transportation corresponding to the amount of culm being ejected. It can always be performed stably.

[Brief explanation of the drawing]

The drawing shows an embodiment of the culm switching guide device in a combine harvester according to the present invention,
Fig. 1 is an overall plan view of the combine, Fig. 2 is a schematic side view with the main parts cut away, Fig. 3 is a schematic side view of the main parts, Fig. 4 is a plan view of the main parts, and Fig. 5 is a side view of the main parts. 6 is a view taken along arrow A in FIG. 4, and FIG. 7 is a sectional view taken along line BB in FIG. 4. In the figure, 2 is a threshing unit, 3 is a culm transporter, 4 is a culm cutting machine, 5 is a culm binding machine, 14 is a switching guide, 1
6, 17 are clamping rails, 16b, 17b are parallel clamping parts, 16c, 17c are inclined clamping parts, 21, 22
is a guide rod, 21a and 22a are first guide parts, 2
1b and 22b are second guide parts.

Claims (1)

[Scope of utility model registration request] At the end of the transport of the waste culm conveyor that transports the threshed waste culm to the post-processing section side, there is a lower movement that is located below the waste culm transfer body and guides the transfer of the waste culm to the rear post-processing section side. In the combine harvester, a switch guide body is provided that can be operated to switch between a position and an upward moving position which is intersecting with respect to the discharge culm transport body and guides the discharge culm downward toward the post-processing section side. The body has clamping rails for holding the culm which are arranged close to the left and right sides of the culm transporting body so as not to come into contact with the culm transporting body during vertical movement, and the transport start end side is supported, and the transport end side is supported from the supporting part. In addition to providing elastic guide rods that can swing up and down, the culm clamping portion of the clamping rail is substantially parallel to the conveying direction of the culm conveyor, and is capable of transporting a large amount of culms. The guide rod is formed of a parallel clamping part that is spaced apart from the discharge culm transport body, and an inclined clamping part that is farther away from the discharge culm transport body toward the transport start end on the transport starting end side where the parallel clamping part continues. The structure includes a first inclined guide part corresponding to the inclined clamping part and a second guide part corresponding to the parallel clamping part. The waste culm is placed close to the conveyor side, and the waste culm is transported toward the rear post-processing section side on the switching guide in the downward moving state.If the amount of waste culm is small, the waste culm is transported more than the parallel clamping part. The second guide part located on the side of the body performs elastic clamping and conveyance, and when the amount of discharged culms is large, the first guide part is strongly pushed by the discharged culms, and the second guide part performs parallel clamping. What is claimed is: 1. A switching guide device for a culm in a combine harvester, characterized in that the culm switching guide device for a combine harvester is configured to carry out clamping and conveyance using a parallel clamping section that is housed in the section and directly faces the culm conveyor.