JPH065981Y2 - Roller support device for crawler - Google Patents

Description

TECHNICAL FIELD The present invention relates to a crawler wheel support device.

Problems to be Solved by the Conventional Technology and the Invention In a form in which a roller wheel located along the longitudinal direction of a crawler in the front-rear direction is axially supported by a roller wheel located in the central portion in the lateral direction of the inner peripheral surface of the crawler. In the rolling wheel support device, for example, when the rolling wheel shaft is directly attached to the rolling wheel frame, or when a boss is provided on the lower side of the rolling wheel frame and is attached to this boss, these rolling wheel shafts, nuts for fastening the rolling wheel shafts, etc. Since it protrudes to the outside of the wheel frame, for example, when the side end of the crawler bends upward due to unevenness of the running ground, the inner end of the crawler slides on the spindle end or nut. There is a risk of damaging the side end of the crawler.

Means for Solving Problems This invention is directed to a rolling wheel (2) for guiding the rolling direction of a crawler (1).
The supporting shaft (3) is supported by one side of the supporting shaft (3), and the supporting shaft (3) is supported by the supporting member (5) supported by the front and rear rolling frame (4) located within the width of the crawler (1). Projecting wall that covers one side projecting end of the shaft (3)
The crawler roller support device is provided with (6).

Action and effect of the invention The rolling wheel frame (4) supports the rolling wheel (2) via the rolling wheel support (5) and the support shaft (3), and guides the rolling direction to the rolling wheel (2). If the crawler (1) running while being driven has a convex part on the traveling ground located at the side end part of the crawler (1), the side end part of the crawler (1) follows this convex part and the side end part is upward. However, since the inner peripheral surface of the refraction is guided by sliding contact with the protruding wall portion (6) of the wheel support (5), the end of the support shaft (3) or the end of the support shaft (3) is bent. Since it does not come into contact with the fastening nut or the like, the end portion on the crawler (1) side is unlikely to be damaged.

Example In the example shown in the figure, a machine frame including left and right side frames (7) and (7) in the front-rear direction and front and rear side frames (8) and (8) in the left and right direction is provided, and these left and right side frames (7) (7) ), A pair of left and right support frames (9) and (9) that bend downward toward the outside, respectively, are provided at the front and rear ends, and the lower ends of the front and rear support frames (9) and (9) are Connect the front and rear wheel frames (4).

In the center of the front frame (8) in the left-right direction, a transmission mechanism for internally mounting a pair of left and right drive sprockets (10) (10) at the lower end and transmitting to these drive sprockets (10) (10) is installed. The transmission case (11) is provided, and the driven wheels (12) and (12) are mounted on the rear ends of the wheel frames (4) and (4), respectively.

A boss portion (14) having a shaft support hole (13) in the left-right direction, which is located outside and below the outer surface, at an appropriate position on the outer surface of the wheel frame (4), and the boss portion (14). ) Provided on each wheel support (5) having a projecting wall (6) that curves along the outer periphery of the inner end and projects inward, and supports the wheel support (5) axially. The hole (13) has a collar portion (15) at the outer end, and the collar portion (1
The support shaft (3) fitted with the bearings (16) (16) and the collars (17) (17) between the (5) and the outer surface of the boss portion (14) is fastened with the nut (18).

Further, on the outer circumference of the bearings (16) (16), a groove is formed at the center in the left-right direction.
The driving sprocket (10) is fitted to the driving sprocket (10) and the driven wheel (12) by fitting the rolling wheel (2) having the (19).
The cored bar (20) (2) that is connected to the tooth section of the wheel and the groove section (19) of the rolling wheel (2).
Wind the crawler (1) having 0) ....

Reference numeral (21) is a seal cover for preventing the intrusion of mud into the bearings (16), (16), and reference numeral (22) is a wheel for preventing the crawler (1) from hanging.

Next, the operation will be described. The drive sprockets (10) (10) that are transmitted to the transmission mechanism in the transmission case (11) are crawler
(1) Crawler (1) (1) by sequentially engaging the core metal (20) (20) of (1)
The crawler (1) (1) is driven wheel (12) and each roller (2)
(2)… Run the car body while rotating and.

If there is a convex part of the running ground at a position below the inner end of the crawler (1) while traveling, the inner end of the crawler (1) is bent upward by the convex part, but this bent end is By sliding contact with the protruding wall portions (6) (6) of the wheel support (5) (5), the protruding wall portions (6) (6) are guided to the inner end portion with a constant refraction angle. , The nuts (18) (18) ... rotate smoothly without abutting.

[Brief description of drawings]

FIG. 1 shows an embodiment of the present invention. FIG. 1 is a front sectional view and FIG. 2 is a side view. In the figure, reference numeral (1) is a crawler, (2) is a wheel, (3) is a spindle, (4)
Is a rolling wheel frame, (5) is a rolling wheel support, and (6) is a protruding wall portion.

Claims (1)

[Scope of utility model registration request] 1. Rolling wheels (2) for guiding the rolling direction of the crawler (1)
The supporting shaft (3) is supported by one side of the supporting shaft (3), and the supporting shaft (3) is supported by the supporting member (5) supported by the front and rear rolling frame (4) located within the width of the crawler (1). Projecting wall that covers one side projecting end of the shaft (3)
A crawler roller support device including (6).