Seal for an endless track

Abstract

Provided is a seal for a crawler, wherein a contact surface between the seal and a bush has almost equal contact pressure to suppress the lopsided wear of the seal and cause almost no entry of sediment in the contact surface between the seal and bush and a wear allowance of the contact surface between the seal and bush is larger than that of a conventional M-type seal. (1) The seal 1 for the crawler has a cross section almost righ-and-left symmetrical with a sectional center line of the seal parallel to the axial direction of the bush, as a center. (2) The seal has an elastic portion 3 in a X-shaped cross section, a protruded portion 8 extending from the crossing of both legs of a X-shape to a bush side beyond a face connecting the bush-side ends of both legs of the X-shape, and the contact surface 9 with the bush formed at the bush-side end face of the protruded portion. (3) A portion between both legs of the X-shape on the bush side beyond the crossing 6 of both legs of the X-shape is filled with a sealing material.

Description

technical field [0001] The present invention relates to seals for track tracks. technical background [0002] In Track 10, as in Figure 4 As shown, between the bushing 11 and the bottom surface 13 of the counterweight hole of the chain ring 12, a track seal 14 (hereinafter referred to as the seal) is installed, and between the pin 15 and the bushing 11 to prevent moisture or sand from entering The gap 16 also prevents leakage of the lubricating oil filled in the gap between the pin 15 and the bush 11 . [0003] Conventionally, as the seal 14 of the crawler belt 10, such as Figure 5 The section shown is an M-shaped seal (hereinafter referred to as M-shaped seal). Therefore, the M-type seal is to make the M shape lie horizontally, and is installed between the bush 11 and the bottom surface 13 of the counterweight hole of the chain ring 12, and bears surface pressure in the direction of the bush axis. [0004] However, the M-type seal has the following problems. [0005] ...

AI Technical Summary

Problems solved by technology

[0007] ③Because the amount of wear (abrasion generation) of the contact surface of the M-type seal with the bushing is less than the thickness of the footed root 19 on the side in contact with the bushing of the M-type seal, the amount of wear is reduced and the life of the seal is also shortened.

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