JPS5936983Y2 - Cover and chain tensioning device in grain culm conveyance section of combine harvester - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a cover and chain tensioning device in a training conveyance section of a combine harvester.

In a combine harvester, if the conveyor section, which consists of a conveyor chain during clamping, is left exposed, it is dangerous to accidentally touch the operating section, and uncut husk culms are exposed during operation. Since problems such as falling down on a part and disrupting the posture or causing grains to fall off occur, the non-transporting parts of the transporting ceno in the training transport section are covered with a cover (for example, in Japanese Utility Model Publication No. 50-99137). Publication No.)
.

By the way, when covering the non-conveying part of the training conveyance section with a cover, it should be formed so as to sufficiently cover the conveyance starting end, which is close to the ground and is easily damaged by coming into contact with obstacles, and is also susceptible to contact with uncut husk culms. However, since the conventional structure described above uniformly covers the entire non-transporting part of the transporting chino, it cannot sufficiently cover the transporting start end.

In addition, in the conventional model, the entire non-working part of the transport cheno is uniformly covered with a cover, and even though the entire transport cheno is built into the cover from the perspective of the aircraft vertical section, the transport cheno is Since there is no mechanism for performing tension operation from the outside while the cover is still attached, the cover must be attached and removed each time for tension operation, which is cumbersome.

SUMMARY OF THE INVENTION Accordingly, the present invention provides a system in which the transporting starting end of the transporting ceno is appropriately covered with a tensioning mechanism, and the tensioning operation of the transporting ceno can be easily performed with the cover attached.

Next, the embodiment shown in the drawings will be described.

Figure 1 shows a side view of a combine harvester, in which a reaping transport section A is installed at the front of the machine body supported by a cover type A rod 1, and a threshing device B is installed behind it. A conveying chino 5 is equipped with a grass dividing plate 2 and a pulling body 3 at the front, a cutting blade 4 is installed at the lower rear thereof, and pinches and pumps the lower part of the grain culm from above the blade 4 toward the rear. At the same time, the tip side conveying tine 6 is extended to the upper blade thereof, and the conveying chino 5
The lower part of the vertical conveyance chain 7 is brought close to the rear side of the machine, and the upper part of the vertical conveyance chain 7 is brought close to the foot chain 8 of threshing device B. The discard chain 9 is extended and configured.

In the grain culm transport section below the reaping transport section A, a support shaft 12 is installed on the left side of the machine body from a support 11 fixed to the reaping frame 10 side, and the support shaft 12 has a large diameter. A floating sprocket 13 is loosely fitted, and a large diameter star wheel 14 is provided below and a pulley 15 is provided above, and a belt 16 with a protrusion 16' is wound around the pulley 15 so as to rotate. There is also a star foil 17 on the right side of 14 that meshes with the star foil 14.
A belt 18 with a protrusion 18' is rotatably provided above the belt 16, 18, and both belts 16 and 18 are arranged in an inverted shape in the front direction, and a guide body 19 is provided in front of the belt 16, 18.

Further, a drive shaft 21 supported by an upper support cylinder 20 is located diagonally rearward and slightly above the floating sprocket 13.
A driving sprocket 22 driven by the 2 sprockets 13 and 22 is equipped with a driving sprocket 22, and the conveyor cheno 5 is wound around both sprockets 13.22. The front portion 23' of the star foil 17 is bent and extended above the star foil 17.

Between both sprockets 13 and 22, a tension roller 24 is brought into contact with the non-acting part of the conveyance cheno 5 from the inside, and the support shaft 25 of the tension roller 24 is extended downward to contact the lower side of the conveyance cheno 5. One end boss portion 2 of the arm 26
6', and the other end support part 26'' of the arm 26 is rotatably fitted to a support shaft 27 fixed to the frame side, and the conveying cheno 5 is fitted across both sprockets 13 and 22. The non-operating side and the upper part of the tension roller 24 are covered with the upper surface 28 of the cover C, and the cover C is bent downward along one side of the cover C, so that the side surface 29 is formed so that even if the conveyance cheno 5 is extended, the side surface 28 is sufficiently bent. Fix the cover 〇 to the frame side so that both sides can be covered.

In addition, the cover ○ is provided with an adjuster D, which has a long screw rod 31 inserted through the fixed vertical shaft portion 30, and a screw rod on both sides of the vertical shaft portion 30. A tension spring 33 is connected between the tip of the threaded rod 31 and the boss portion 26' of the arm 26, and the inclined lower edge of the side surface 29 of the cover C is connected with a tension spring 33. A screw rod 31 is configured to extend below 29'.

Two support rods 32, 32' are fixed to the straight part of the armature rod 23, and both support rods 32, 32' are attached to the downward bracket 33.
Compression springs 34° 3 are slidably inserted into the support rods 32 and 32' within the bracket 33.
The clamping rod 23 is provided so as to be pressed against the conveyance cheno 5 side by the elasticity of the lever 4', and the L-carved metal fitting 36 is fixed to the support rod 35 fixed to the machine body, and the L-carved metal fitting 36 is bolted to the lower part of the stay 37. 38.38', and the stay 3
7 is joined to the lower surface of the upper surface part 33' from the lower side of the bracket 33 and fixed with a bolt 39, but the structure is such that only the head 39' of the bolt 39 protrudes above the upper surface part 33'. do.

Therefore, simply by protruding the bolt head 33' on the upper surface 33' of the bracket 33 that supports the clamping rod 23, it is possible to maintain a state in which straw debris and the like do not get caught.

Then, the lower part of the grain culm cut by the cutting blade 4 is attached to both belts 1
8. While pulling it with the protrusions 18' and 16' of 16, it is scraped between both star foils 14.17, and then conveyed while being held between the conveyor cheno 5 and the clamping rod 23, and then transferred to the vertical conveyor cheno 7. Although the grains are peeled off and fed to the threshing device B, they can be covered over the road of the conveyor cheno 5 and with a cover C for a safe structure.

In this state, the tension roller 24 is pressed against the conveyance cheno 5 by the tensile force of the tension spring 33 to make it tense. However, when the conveyance cheno 5 begins to extend, the adjuster is adjusted by operating the nuts 32 and 32' from outside the body. The screw rod 31 can be pulled and adjusted by the operation D to tension the stretched conveyance cheno 5, but even if it stretches, it is sufficiently covered by the cover 〇, and the tension roller 24 exerts sufficient tension inside the cover C. Do the following.

As described above, in the present invention, a belt with protrusions 16.18 is disposed in the shape of an example character toward the front from the pair of large-diameter star wheels 14.17 that engage and rotate at the upper center of the cutting blade 4, and A culm lower clamping and conveying device consisting of a conveying cheno 5 and a pinching rod 23 is extended rearward from the star foil 14 and 17 portions, and a culm lower clamping and conveying device is installed on the road side of the non-conveying side portion of the conveying cheno 5 and In the combine conveyance unit configured to cover the evening and evening ends with a cover 〇, the conveyor cheno 5 is disposed so that the rear part thereof is biased inward in plan view and inclined to the rear height in side view, The rear sprocket 22 is installed so as to be driven by a drive shaft 21 supported by a support cylinder 20 hanging down from the top, and the cover C is arranged at an appropriate distance along the non-conveyance side of the conveyance chino. The hanging width of the side surface 29 at the front part is made wide so as to commonly cover the side part of the star foil and the side part of the conveyance cheno, and the width becomes narrower from the wide hanging part to the upper rear part. Since the tension roller 24 in contact with the non-conveyance side of the conveyance ceno and the adjuster D provided outside the cover are connected through the lower part of the narrow hanging portion, the following advantages are achieved. be.

■ The conveyor chain extending rearward from the star wheel part is biased toward the rear inward in plan view and raised at the rear in side view, and the rear sprocket is driven by a drive shaft 21 hanging from above. At the same time, the cover 〇 that covers the conveyance cheno is formed so that the drooping width of the side surface 29 at the front part is made wide so as to commonly cover the side of the star foil and the side of the conveyance cheno, and from the wide drooping part upwardly rearward. Since the width is narrower as the width increases, the outside of the non-conveying side of the conveyance starting end, which is closer to the ground and closer to the uncut husk culm, is sufficiently wide not only to the conveyor chino but also to the star foil section. By covering with the wide hanging portion, it is possible to prevent abnormal conveyance of weeds and adjacent uncut husk culms, and also to prevent contact with obstructions, so that a good conveyance action can be started.

In addition, the rear part of the conveyance cheno 5, that is, the end of the conveyance, is biased towards the inside of the machine body and is set higher than the conveyance start end, away from the uncut husk culm, and further away from the ground to prevent abnormal conveyance of the uncut husk culm. Since contact with objects is avoided, there is no problem even if the hanging part that covers the same area is made gradually narrower than the wide hanging part mentioned above, and the entire cover can be made smaller. The adjuster can be adjusted through the narrow hanging part, making it convenient to tension the conveyor cheno with the rod cover attached.

■ In addition, while the culm is being held and transferred by the conveyor chain 5, weeds, weeds, etc. that separate from the culm body of the culm are caught in the part that wraps around the sprocket at the rear end of the conveyor chain. When the weeds, etc. are released when the conveyance chain leaves the sprocket, they fall downward because the end of the conveyance is located away from the ground, and the part where they fall to the ground is rotated. Part does not exist (
Since the sprocket is driven from the top), there is no chance of the sprocket getting wrapped around rotating parts, and the conveyor chino can always operate smoothly.

■ Furthermore, the tension roller 2 that comes into contact with the conveyance cheno 5
4 and the adjuster D outside the cover C is connected through the lower side of the narrow hanging part of the cover 〇.
These positions are safe because they are away from the ground and are less affected by muddy water or contact with obstacles, and the connecting parts of the cover and tension roller can be assembled individually. Assembling, disassembling and adjusting work is easy.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, in which Fig. 1 is a side view of the combine harvester, Fig. 2 is an enlarged view of a part thereof, Fig. 3 is a partially cutaway plan view of the part shown in Fig. 2, and Fig. 4. is a side sectional view, 5th
The figure is a plan view of the main part, FIG. 6 is an enlarged view of a part of FIG. 5 showing a partially broken view, and FIG. 7 is a side view thereof.

Claims (1)

[Scope of utility model registration request] A belt 16.18 with protrusions is disposed in an inverted-shape forward from a pair of large star wheels 14.17 that engage and rotate at the upper center of the cutting blade 4, and backward from the star wheels 14.17. Toward this end, a lower shell culm clamping and conveying device consisting of a conveyor cheno 5 and a clamping rod 23 was installed, and a conveyor cheno 5 was installed.
In the combine conveyor section having a structure in which the road side and side of the non-conveying action side portion of the combine harvester are covered with a cover 〇, the rear portion of the conveyor cheno 5 is biased inward in plan view, and when viewed from the side. The cover C is arranged so as to be inclined at a rear height, and the rear sprocket 22 is driven by a drive shaft 21 supported by a support cylinder 20 hanging down from the upper part. The hanging width of the side surface 29 at the front part is adjusted by appropriately spaced apart along the non-conveying side of the
It is formed with a wide width so as to commonly cover the side part of the star foil and the side part of the conveyance cheno, and is provided so that it becomes wider toward the rear and upward from the wide hanging part, and the non-conveyance action side of the conveyance chino is provided. A cover and chain tensioning device characterized in that a tension roller 24 in contact with a tension roller 24 and an adjuster D provided outside the cover are connected to each other through a lower part of a hanging width part.