CN212125326U

CN212125326U - Crawler guide wheel device

Info

Publication number: CN212125326U
Application number: CN202020623150.9U
Authority: CN
Inventors: 陈志坚
Original assignee: Sanming Hengfu Machinery Co ltd
Current assignee: Sanming Hengfu Machinery Co ltd
Priority date: 2020-04-23
Filing date: 2020-04-23
Publication date: 2020-12-11
Anticipated expiration: 2030-04-23

Abstract

The utility model relates to a track guide wheel device, which comprises a guide wheel, a guide wheel shaft, a guide wheel bearing, a bearing cover, a wheel clamping plate and the like; a through hole is formed in the middle of the guide wheel, and annular gaps are formed in the edges of two ends of the through hole; the guide wheel shaft penetrates through a through hole in the middle of the guide wheel; the guide wheel bearing is positioned between the guide wheel and the guide wheel shaft; the bearing cover is sleeved outside the guide wheel shaft and positioned on the outer side surface of the guide wheel bearing; the wheel clamping plates are sleeved outside the guide wheel shaft and positioned on the outer side of the bearing cover, and the bearing cover is pressed on two end heads of the through hole of the guide wheel through the guide wheel nuts locked at the end parts of the guide wheel shaft; the bearing cover is connected with the guide wheel bearing in a sealing way, and a combined oil seal is arranged on the outer ring surface of the bearing cover in a ring mode. The utility model has the advantages that for the leading wheel relatively with the high-speed rotation of bearing cap, rotate the in-process and press outside muddy water extrusion in forming between leading wheel and leading wheel axle to avoided muddy water endosmosis, the effectual sealed problem of solving the leading wheel bearing of seal structure of reassembling.

Description

Crawler guide wheel device

Technical Field

The utility model relates to an agricultural farming mechanical equipment technical field, especially a track leading wheel device.

Background

The sealing modes such as the track leading wheel on the existing market mainly adopt a double-oil seal structure or a single combined oil seal structure, and the structure is easy to have the following problems:

in the double-oil-seal structure, because the oil seal and the shaft are in tight sliding friction in the running process of the machine, after a certain frequency is used, a gap is generated after the shaft or the inner ring of the oil seal is worn, and muddy water permeates into the bearing from the gap to cause the wearing and the damage of the bearing;

although the combined oil seal is structurally superior to a double-oil seal sealing structure, the inner ring and the shaft of the combined oil seal are relatively fixed, the end surface structure of the combined oil seal is single, the phenomena of abrasion and water leakage are easy to occur under the action of long-term silt, and muddy water permeates into the bearing to cause the abrasion and damage of the bearing.

Disclosure of Invention

The utility model aims to provide a: the utility model provides a track leading wheel device, the internal pressure that produces through the course of the work avoids muddy water to get into seal structure.

The utility model discloses a following technical scheme realizes: a track leading wheel device is characterized in that: the device comprises a guide wheel 5, a guide wheel shaft 6, a guide wheel bearing 1, a bearing cover 3, a wheel clamping plate 8 and a guide wheel nut 7;

a through hole is formed in the middle of the guide wheel 5, and annular gaps are formed in the edges of two ends of the through hole; the guide wheel shaft 6 penetrates through a through hole in the middle of the guide wheel; the guide wheel bearing 1 is positioned in a gap between the guide wheel and the guide wheel shaft 6, so that the guide wheel can rotate relative to the guide wheel shaft 6; the bearing cover 3 is sleeved outside the guide wheel shaft 6 and is positioned on the outer side surface of the guide wheel bearing 1; the wheel clamping plates 8 are sleeved outside the guide wheel shaft 6 and positioned on the outer side of the bearing cover 3, and the bearing cover 3 is pressed on two ends of the through hole of the guide wheel through the guide wheel nuts 7 locked at the end parts of the guide wheel shaft 6 by the wheel clamping plates 8;

at least two O-shaped sealing rings 2 are annularly arranged on the inner ring surface of the bearing cover 3, and a combined oil seal 4 is annularly arranged on the outer ring surface of the bearing cover 3; and the outer side of the combined oil seal 4 is also provided with an annular convex edge fixed on the outer ring surface of the bearing cover, and the annular convex edge is lapped on the annular gap.

Compared with the prior art, the utility model has the advantages that:

when the guide wheel rotates at a high speed relative to the bearing cover, internal pressure is formed between the guide wheel and the guide wheel shaft in the rotating process to extrude muddy water outside, so that muddy water is prevented from leaking inwards, and the sealing problem of the guide wheel bearing is effectively solved by the integrated sealing structure.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Description of reference numerals: the device comprises a 1-guide wheel bearing, a 2-O-shaped sealing ring, a 3-bearing cover, a 4-combined oil seal, a 5-guide wheel, a 6-guide wheel shaft, a 7-guide wheel nut and an 8-wheel clamping plate.

Detailed Description

The invention is explained in detail below with reference to the accompanying drawings:

as shown in fig. 1: a crawler guide wheel device comprises a guide wheel 5, a guide wheel shaft 6, a guide wheel bearing 1, a bearing cover 3, a wheel clamping plate 8 and a guide wheel nut 7;

The working principle is as follows:

the O-shaped sealing ring 2 seals the contact surface between the guide wheel shaft 6 and the bearing cover 3; the inner side surface of the bearing cover 3 and the outer side surface of the guide wheel bearing 1 are tightly pressed and sealed; a combined oil seal 4 is arranged between the convex edge of the bearing cover 3 and the guide wheel bearing 1; when the guide wheel 5 rotates at a high speed relative to the bearing cover 3 during working, internal pressure is formed in the rotating process of the guide wheel 5 to extrude muddy water outside, so that the muddy water is prevented from permeating inwards, and the sealing problem of the guide wheel bearing is effectively solved through the sealing structure.

While the present invention has been shown and described with reference to particular embodiments and alternatives thereof, it will be understood that various changes and modifications can be made without departing from the spirit and scope of the invention. It is understood, therefore, that the invention is not to be limited, except as by the appended claims and their equivalents.

Claims

1. A track leading wheel device is characterized in that: comprises a guide wheel (5), a guide wheel shaft (6), a guide wheel bearing (1), a bearing cover (3), a wheel clamping plate (8) and a guide wheel nut (7);

a through hole is formed in the middle of the guide wheel (5), and annular gaps are formed in the edges of two ends of the through hole; the guide wheel shaft (6) penetrates through a through hole in the middle of the guide wheel; the guide wheel bearing (1) is positioned in a gap between the guide wheel and the guide wheel shaft (6) so that the guide wheel can rotate relative to the guide wheel shaft (6); the bearing cover (3) is sleeved outside the guide wheel shaft (6) and is positioned on the outer side surface of the guide wheel bearing (1); the wheel clamping plates (8) are sleeved outside the guide wheel shaft (6) and positioned on the outer side of the bearing cover (3), and the bearing cover (3) is pressed on two end heads of the through hole of the guide wheel by the wheel clamping plates (8) through a guide wheel nut (7) locked at the end part of the guide wheel shaft (6);

at least two O-shaped sealing rings (2) are annularly arranged on the inner ring surface of the bearing cover (3), and a combined oil seal (4) is annularly arranged on the outer ring surface of the bearing cover (3); and the outer side of the combined oil seal (4) is also provided with an annular convex edge fixed on the outer ring surface of the bearing cover, and the annular convex edge is lapped on the annular gap.