JPH063784U - Crawler device support structure - Google Patents

Abstract

(57) [Summary] (Correction) [Purpose] To secure the crawler support portion to the machine body frame with a simple structure and to easily change the tread. Constitution: In a support portion that can move the track frame 12 up and down, an inverted L-shaped support plate 23 is fixedly installed on both sides of the center of a fulcrum pipe 22 that pivotally supports a swing arm 26,
The swing arm 26 and a fulcrum metal are externally fitted to both outer sides of the support plate to fix the support plate and the fulcrum metal to the machine body frame 15, and the lower end of the swing arm and the collar 33 are attached to the support shaft 32 protruding from the track frame. It is configured such that the tread can be changed by externally fitting and changing the position of the collar.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a structure of a support portion of a crawler for supporting a machine body of a work vehicle such as a combine so that the vehicle body frame can be easily and firmly supported by a simple structure to easily change the vehicle width.

[0002]

[Prior art]

 2. Description of the Related Art Conventionally, a technique for enabling a vehicle to be supported by a crawler type traveling device in a combine or the like to enable traveling is known, and is, for example, a technique disclosed in Japanese Utility Model Laid-Open No. 1-106379. This technology makes it possible to adjust the height of the airframe and the inclination to the left and right, and the supporting parts of the lifting part of the track frame are, as shown in FIG. 11, FIG. 12 and FIG. 2 is externally fitted and fixed to the machine body frame 4 by bolts, etc., the swing arms 3 and 3 are externally fitted inside the fulcrum metal 2.2, and the collar 5.5 is welded and fixed to the fulcrum pipe 1 inside. Positioning was carried out, and a support plate 6 was provided in the center to fix it to the machine frame 4.

[0003]

[Problems to be solved by the device]

 However, with the conventional configuration, if the vehicle width is widened to improve stability or if the vehicle width is improved by changing the specifications, etc., it is necessary to change from the fuselage frame, Also had to be changed to suit the tread. Further, in the swing arm supporting portion, since the fulcrum pipe is divided in the technique of No. 1-106379, the load load of the fulcrum pipe is large, and in the case of the technique of FIG. 11, an excessive load is applied to the central support plate. It was necessary to make the fulcrum pipe thicker, which caused an increase in weight.

[0004]

[Means for Solving the Problems]

 The problem to be solved by the present invention is as described above, and in order to solve the problem, the swing arm is pivotally supported at the supporting portion that can move up and down the track frame of the crawler type traveling device that supports the body of the work vehicle. Inverse L-shaped support plates are fixedly installed on both sides of the center of the fulcrum pipe, swing arms and fulcrum metal are externally fitted on both outer sides of the support plate, and the support plate and the fulcrum metal are fixed to the machine frame. is there. In addition, a support shaft for supporting the track frame on the machine frame is externally fitted with a support member on the machine frame side and a collar, and the tread can be changed by changing the position of the collar.

[0005]

[Action]

 With this structure, the track frame is supported by the body frame via the swing arm, and the fulcrum pipe that pivotally supports the swing arm is firmly fixed by the support plate integrally fixed to the body frame and the collar. As a result, the load on the supporting pipe is reduced, and the collar is also fitted onto the supporting shaft projecting from the track frame supported on the lower end of the swing arm. The tread can be changed by changing the position inside or outside.

[0006]

【Example】

 The problems to be solved and the means for solving the present invention are as described above. Next, a concrete configuration of the present invention will be described with reference to an embodiment used in a traveling device of a combine. Fig. 2, Fig. 2 is a side view of the crawler type traveling device, Fig. 3 is a front sectional view of the same, Fig. 4 is a front view of a fulcrum pipe, Fig. 5 is a sectional view taken along the line BB in Fig. 4, and Fig. 6 is a track frame with a changed tread. Front sectional view of the drive sprocket portion, FIG. 8 is a front sectional view in a state where the vehicle width is narrowed, FIG. 9 is a front sectional view showing a drive sprocket of another embodiment, and FIG. 10 is a crawler plane. It is a figure.

Explaining the overall structure of the combine in FIG. 1, the combine has a machine frame 15 mounted on a crawler type traveling device C, and a threshing device 21 and a shredding machine 21 in which a handling cylinder 19 is housed on the machine frame 15. A sorting device for sorting the later paddy and a grain tank 17 for storing refined grains on the side thereof are provided, and a cabinet 4 is arranged in the front portion of the grain tank 17 to raise the grain in front of the threshing device 21. The reaper A is provided.

The raising and mowing device A weeds a grain culm that protrudes from the sward plate 24 at the front end and is raised and caused by the tines of the case, and is scraped by the scraping device to scrape the cutting blade 29. The root of the stock is cut, and the cut culm is sent backward from the upper transfer device, the lower transfer device, and the vertical transfer device 34, and the root of the stock is inherited by the feed chain 20. The culms are sandwiched and passed through a threshing device 21 to be threshed, and the grains after threshing are sorted and the refined grains are stored in the grain tank 17.

The crawler type traveling device C, which is the main part of the present invention, can horizontally control the machine body in accordance with the left and right inclination of the work site, and as shown in FIG. Scrapers 11a and 11b are arranged at the front and rear ends of the traveling device C so as to contact the left and right crawlers 14 and 14, and the front scraper 11a is fixed to the mowing drive case 46 of the mowing device A and protrudes rearward. The scraper 11b is arranged so as not to hit the crawler 14 when the reaper A moves up and down, removes mud and the like adhering to the crawler 14 when moving backward, and the scraper 11b on the rear side is projected forward and downward from the rear of the machine frame 15 to move forward. At times, mud and the like adhering to the crawlers 14 are removed to prevent the grip of the crawlers from deteriorating in wetlands and the like, thereby improving runnability.

The crawler support structure of the present invention will now be described with reference to FIGS. 2 to 6. The upper frame 15a and the lower frame 15b of the machine body frame 15 are arranged in a grid pattern, respectively, and the cabin 16 is mounted on the upper frame 15a. The threshing device 21, the grain tank 17, etc. are placed, and the track frame 12 is mounted on the lower frame 15b so as to be able to move up and down. That is, as shown in FIGS. 3, 4, and 5, the fulcrum pipe 22 that supports the swing arm 26 for raising and lowering the track frame 12 is provided with the support plates 23, 23, which are inverted L-shaped in a front view, on both sides of the center. Then, the swing arms 26, 26 are positioned, the nut 25 is welded and fixed to the rear surface of the upper plate 23a of the support plate 23, and bolts are fixed to the lower frame 15b so that they can be integrated. Swing arms 26, 26 are rotatably fitted on both outer sides, and fulcrum metals 28, 28 are fitted on the outer sides and fixed to the lower frame 15b with bolts 27. The pipes 22 are fixed to the fuselage frame 15 at four locations on the left and right outer sides and the left and right inner sides.

The swing arm 26 is arranged at four positions in the front, rear, left and right, and is raised and lowered to the upper end of the upper arm 26a of the rear swing arm 26 so that the left and right sides can be independently raised and lowered in parallel. The tip of a piston rod 30a of the cylinder 30 is pivotally supported, and the base of the lifting / lowering cylinder 30 is pivotally supported by the upper frame 15a. A connecting rod 31 for connecting to the swing arm 26 on the front side is pivotally supported at a slightly lower portion of the pivotally supporting portion with the piston rod 30a, and the front and rear can be simultaneously rotated.

A support shaft 32 is pivotally supported at the lower end of the lower arm 26b, and the other side of the support shaft 32 is fixedly mounted on the track frame 12, and between the track frame 12 and the fitting portion 26c of the swing arm 26. A collar 33 is fitted on the outside of the sleeve, and the tread can be easily changed by changing the position of the collar 33 with the fitting portion 26c as shown in FIG. 6 during mounting. It is also possible to change the tread by preparing track frames with different lengths of the support shaft 32. By dividing the collar, the sum of the lengths of the two collars is equal to the length of the collar 33. If so, the tread adjustment amount can be expanded.

A grounding wheel 35 and an equalizer 37 are pivotally supported on the track frame 12, and a tensioning wheel 39 is provided at the rear end of the crack frame 12 so as to project laterally from a mission case 36 in front of the crack frame 12. A drive sprocket 41 is fixedly mounted on the drive shaft 40, and the crawler 14 is wound around the drive sprocket 41, the tension wheel 39, the grounding wheel 35, and the equalizer 37.

As shown in FIG. 7, the drive sprocket 41 has a collar 42 provided on the drive shaft 40 between the housing 43 and the drive sprocket 41, and the collar 42 serves as a dustproof collar. By replacing the collar 42 with the driving sprocket 41 as shown in FIG. 8, the tread of the track frame can be changed at the same time, and the length of the collar can be changed to make a stepwise adjustment. . Further, as shown in FIG. 9, by forming a boss portion 41a 'on the shaft portion of the drive sprocket 41' and changing the left and right sides of the drive sprocket 41 ', the position of the boss portion 41a' is changed from the upper side to the lower side. It can be changed, and the tread can be changed as described above.

[0015]

[Effect of device]

 Since the present invention is configured as described above, it has the following effects. That is, since it is configured as in claim 1, it is possible to reduce the number of parts by integrally forming the support plate on the machine body frame, reduce the support load of the fulcrum pipe, and reduce the weight of the fulcrum pipe. It was possible to reduce the cost.

According to the second aspect of the invention, the tread can be easily changed by changing the position of the collar in the same airframe and track frame, and the driving sprocket can be changed in the same manner. When changing specifications, it was possible to manufacture models with almost the same parts but with different treads, common parts could be used, and the design could be simplified and costs could be reduced when the specifications were changed. The tread can now be easily changed even after shipping.

[Brief description of drawings]

FIG. 1 is an overall side view of a combine.

FIG. 2 is a side view of a crawler type traveling device.

FIG. 3 is a front sectional view of the same.

FIG. 4 is a front view of a fulcrum pipe.

5 is a sectional view taken along the line BB in FIG.

FIG. 6 is a front cross-sectional view of a track frame portion with a changed tread.

FIG. 7 is a front sectional view of a drive sprocket portion.

FIG. 8 is a front cross-sectional view in a state where the vehicle width is narrowed.

FIG. 9 is a front sectional view showing a drive sprocket according to another embodiment.

FIG. 10 is a plan view of a crawler.

FIG. 11 is a front sectional view of a conventional track frame portion.

FIG. 12 is a plan view of a conventional fulcrum pipe.

FIG. 13 is a front view of the same.

[Explanation of symbols]

 12 track frame 14 crawler 15 airframe frame 22 fulcrum pipe 23 support plate 26 swing arm 32 support shaft 33 color

Claims (2)

[Scope of utility model registration request] 1. A support portion of a crawler type traveling device for supporting a machine body of a work vehicle capable of ascending / descending, wherein an inverted L-shaped support plate is fixed to both sides of a center of a fulcrum pipe pivotally supporting a swing arm. A support structure for a crawler device, characterized in that a swing arm and a fulcrum metal are externally fitted on both outer sides of the support plate, and the support plate and the fulcrum metal are fixed to a machine body frame. 2. A crawler type traveling device for supporting a machine body of a work vehicle, wherein a support shaft for supporting a truck frame to the machine frame is fitted with a support member on the machine frame side and a collar, and the position of the collar is changed. A support structure for a crawler device, characterized in that the tread can be changed.