JPH0745149Y2 - Traveling part in combine - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention improves the deterioration of running performance due to the rearward movement of the center of gravity of the machine when a working machine or the like is attached to the rear of the combine. The present invention relates to a traveling portion of a combine that can prevent the elastic crawler from being deformed upward during traveling and being damaged by coming into contact with a corner of a side surface of a rolling wheel frame or a bolt head.

[Problems to be solved by conventional techniques and devices]

The cutting and feeding section is located in the front of the machine, the threshing section is behind it, and the sorting section is below the threshing section.The traveling section of the combine that travels in the crawler traveling section at the bottom of the machine is driven by the front drive section that is pivotally supported by the traveling frame. It consists of an elastic crawler wound around the sprocket, rear idler wheel, and intermediate rolling wheel.The contact length of this elastic crawler is usually constant for each model, and it is set so that the center line of the machine weight passes approximately in the center of the contact surface of the crawler. Has been done.

Therefore, when a working machine such as a knotter is attached to the rear part of the combine, the center of gravity of the machine moves rearward and the traveling performance deteriorates. In order to improve this, a balance weight is added to the front of the machine to adjust the machine balance, but the addition of the balance weight further increases the machine's weight, and there is a problem that the runnability becomes worse in wetlands. It was

Further, the elastic crawler has a problem in that the edge thereof is deformed upward during the ridge work of the combine and the like, and the elastic crawler comes into contact with the corners of the rolling wheel frame and the bolt heads to be damaged.

In view of the above-mentioned conventional problems, the present invention has been made to solve the problem, and even when a working machine or the like is attached to the rear part of the combine, the body weight does not increase due to the addition of the balance weight. It is possible to improve the runnability due to the rearward movement of the center of gravity of the wheel, and the edge of the elastic crawler may be deformed upward during ridge work, etc., causing damage to the side corners of the rolling wheel frame and bolt heads. It is an object of the present invention to provide a traveling unit in a combine that can prevent inconvenience.

[Means for Solving the Problems]

In order to achieve the above object, the present invention provides a support member for a rear idler wheel in a combiner in which a front drive sprocket pivotally supported by a runner frame, a rear idler wheel, and an intermediate crawler wheel around which an elastic crawler is wound. In place, the rear support wheel and the auxiliary idler wheel are respectively removably mounted so that they can be recombined, and the extension elastic crawler is replaced to extend the ground length of the running part rearward. In addition, the running portion of the combine is characterized in that the side surface of the rolling wheel frame that supports the intermediate rolling wheels is formed into a curved surface having a substantially semicircular cross section.

[Action]

When a working machine is attached to the rear part of the combine body, replace the rear idler wheel support member with an extension support member and additionally attach an auxiliary idler wheel, and wind the standard elastic crawler around the extended elastic crawler. By this, the ground contact length of the traveling portion of the combine is extended rearward, and the body balance can be adjusted without increasing the body weight due to the addition of the balance weight,
When the work machine is attached, the deterioration of the running performance due to the backward movement of the body-weight center position is improved.

Also, by forming the side surface of the rolling wheel frame that supports the intermediate rolling wheels into a curved surface with a substantially semicircular cross section, the edge of the elastic crawler is deformed upward during ridge work of the combine and the intermediate rolling wheel frame. Prevents damage to the side corners and bolt heads.

〔Example〕

 Hereinafter, the present invention will be described in detail with reference to the illustrated embodiments.

First, in FIG. 1, 1 is a combine, which is equipped with a working unit composed of a mowing and conveying unit 2, a threshing unit 3, and a sorting unit 4 on a traveling unit 5, and is a mowing and conveying unit 2 at the front of the machine body while traveling in a field. Crop the crop and put the cut grain culm behind the threshing section 3
The grain is mixed with the foreign matter, which has been conveyed and supplied to and threshed, and the threshed grain mixed with the foreign matter is separated from the foreign matter in the lower sorting unit 4, and the harvesting operation for collecting the grain is performed consistently.

As shown in FIG. 2, the traveling part 5 has a front drive sprocket 6, a rear idler wheel 7, a lower intermediate rolling wheel 8, and an upper intermediate rolling wheel 9 around which an elastic crawler 10 made of a rubber material is wound, The idler wheel 7 includes a support portion 11a of its shaft 7a and an elastic crawler 1
A push rod 12 for adjusting the tension of 0 and a slide support rod 13 for movably supporting the rear idler wheel 7 are supported by a supporting member 11 shown in FIG. The tension of the elastic crawler 10 is adjusted by moving the adjusting screw 12a forward and backward by moving the adjusting screw 12a forward and backward.

The lower intermediate rolling wheel 8 of the embodiment is of a 5-unit series. As shown in FIG. 4, in order to facilitate disassembly and assembly, the rolling wheel frame 14 in the shape of a square pipe is supported with the rolling wheel 8 on the outside. The inner surface of the rolling wheel frame 14 is provided with a protection member 14a having a substantially semicircular cross section along the inner surface of the rolling crawler frame 14.
When 0 passes over ridges, as shown by the chain line in the figure, the edges are prevented from deforming upward and contacting the corners of the rolling wheel frame 14 and the heads of the mounting bolts 15 of the rolling wheels, etc. is doing. The position of the mounting bolt 15 of the semi-circular protective material 14a is notched so that the bolt 15 can be attached and detached.

The above is the equipment of the combine 1 at the time of standard work. In this case, the center of gravity of the machine body passes substantially the center of the grounding surface of the elastic crawler 10, but when the work machine 16 such as a knotter is attached to the rear part of the machine body, The center of gravity moves to the rear, deteriorating the running performance. In order to improve this, an auxiliary idler wheel 17 is additionally mounted behind the rear idler wheel 7 as shown in FIG.
Is extended to replace the elastic crawler 18 to extend the ground length of the running portion 5 rearward.

FIG. 8 shows an extension support member for mounting the auxiliary idler wheel 17. The extension support member 19 includes a support portion 19a of the shaft 7a of the rear idler wheel 7, a push rod 12 and a slide support rod 13. Each receiving part 1
In the rear part of the same member as the support member 11 of the rear idler wheel 7 provided with 9b, 19c, a support-like extension bracket 19e having a support portion 19d of the shaft 17a of the auxiliary idler wheel 17 at the tip is integrally formed. It is a thing.

The extension of the contact length of the running portion 5 is carried out by removing the standard elastic crawler 10 and once removing the rear idler wheel 7, replacing the front support member 11 with the above-mentioned extension support member 19, and attaching the rear idler wheel shaft 7a. The rear idler wheel 7 is returned to the support portion 19a, the auxiliary idler wheel 17 is attached to the support portion 19d of the auxiliary idler wheel shaft 17a, and the extended elastic body crawler 18 is wound around all the wheels. As a result, the ground contact length of the traveling unit 5 is extended backward by the length D, and the deterioration of the traveling property due to the rearward movement of the body weight center position when the working machine 16 is mounted on the rear portion is improved.

FIG. 9 shows another embodiment of the extension support member. This extension support member 20 is a support portion 20a for the shaft 7a of the rear idler wheel 7.
When, the receiving portion 20b of the push rod 12 and sliding support bar 13, a rear idler wheel supporting portion 20 ₁ similar to the support member 11 of the rear idler wheel 7 provided with 20c, the shaft 17a of auxiliary idlers 17 The extension bracket portion 20 ₂ provided with the support portion 20 d is formed as a separate body, and both portions 20 ₁ , 2
The male screws 20e provided at the opposite portions of 0 ₂ are butted against each other, the female screw 20f in the form of a sleeve is screwed from one male screw 20e to the other male screw 20e, and the lock nut 20g is tightened to tighten both parts 20 ₁ , The 20 ₂ is assembled or disassembled.

When the extension support member 20 is used in a normal operation in which the working machine is not attached to the rear portion of the combine 1, the rear idler wheel support portion 20 ₁ alone is used to perform work at a standard ground length, and the working equipment 16 is attached to the rear portion. After removing the standard elastic crawler 10, the rear idler wheel support 20 ₁ does not need to be removed, and the extension bracket 20 ₂ is simply attached to the rear to form the extension support member 20. If the auxiliary idle wheel 17 is attached to and the extended elastic crawler 18 is attached, the ground contact length is extended. When returning to the standard ground length, the above procedure may be reversed.

[Effect of device]

In short, the present invention is, in the traveling portion of the combine in which the elastic crawler is wound around the front drive sprocket, the rear idler wheel, and the intermediate rolling wheel that are axially supported by the traveling frame,
In place of the support member for the rear idler wheel, extension support members that pivotally support the rear idler wheel and the auxiliary idler wheel are removably attached, and by replacing the extensional elastic crawler with the extension member, the contact length of the running portion can be increased. Since it is configured to extend to the rear, the machine body balance when a work machine or the like is attached to the rear part can be improved without the need to increase the weight of the machine body by adding a balance weight, Since the rear idler wheel and its auxiliary idler wheel are axially supported by the same extension support member, the extension of the ground contact length can be achieved by simply installing the extension support member instead of the normal support member without requiring a complicated structure. While ensuring the rigidity of the traveling part, the rear idler wheel and the auxiliary idler wheel can be easily installed with an appropriate and strong positional gap maintained, and the elastic crawler can be held in a stable tensioned state. Get cheap aircraft It is possible to maintain the travel, when the extension work of the ground length, component costs for replacement parts is small corner for a small and can be easily performed retrofit work supporting member is also in the field.

Further, by forming the side surface of the rolling wheel frame that supports the intermediate rolling wheels of the traveling portion into a curved surface having a substantially semicircular cross section, the edge of the elastic crawler is deformed upward during ridge work of the combine, It is possible to avoid the inconvenience of being damaged by contacting the side corners of the rolling wheel frame and the bolt heads, and it is possible to ensure safe traveling performance of the combine, which is an extremely useful practical effect. .

[Brief description of drawings]

FIG. 1 shows an embodiment of the present invention, FIG. 1 is a schematic side view of a combine adopting the present invention, FIG. 2 is a side view of a running part of the combine as standard equipment, and FIG. FIG. 4 is a perspective view of a support member for the rear idler wheel, FIG. 4 is a vertical sectional view of a rolling wheel frame according to the present invention, FIG. 5 is a rear side view of the running portion when the contact length is extended, and FIG. 6 is FIG. 7 is a cross-sectional view taken along the line AA of FIG. 7, FIG. 7 is a cross-sectional view taken along the line BB of FIG. 5, FIG. 8 is a perspective view of the extension support member when the contact length is extended, and FIG. 9 is an extension support member. It is a partial cross-sectional side view of other Example of this. 1 ... Combine, 5 ... Running part, 6 ... Front drive sprocket, 7 ... Rear idler wheel, 8 ... Lower intermediate rolling wheel,
10 …… Standard elastic crawler, 11 …… Rear idler support member, 14 …… Rolling wheel frame, 14a …… Semi-circular protective material, 17 …… Auxiliary idler wheel, 18 …… Extended elastic crawler , 1
9,20 …… Extension support member for rear idler wheel.

Claims (2)

[Scope of utility model registration request] 1. In a traveling part of a combine in which an elastic crawler is wound around a front drive sprocket, a rear idler wheel, and an intermediate rolling wheel which are axially supported by a traveling part frame, the rear idler wheel is replaced with a supporting member. It is characterized in that extension support members that pivotally support the rear idler wheel and the auxiliary idler wheel are removably mounted, and the extension elastic body crawler is replaced to extend the ground length of the running portion rearward. The traveling section of the combine. 2. The traveling part in a combine according to claim 1, wherein the side surface of the rolling wheel frame supporting the intermediate rolling wheels is formed into a curved surface having a substantially semicircular cross section.