Waterproof oil seal for track chassis thrust wheel guide wheel

Abstract

The utility model relates to a waterproof oil seal for a track chassis thrust wheel guide wheel, and belongs to the technical field of sealing devices. Comprising a lining plate and a sealing cover, an inner convex ring is arranged in the center of one side of the lining plate, an outer convex ring is arranged on the periphery of the lining plate, 2-3 grooves are formed in one side of the sealing cover, and the diameters of the 2-3 grooves are sequentially increased in the diameter direction of the sealing cover with the circle center of the sealing cover as the starting point; a rubber ring is arranged on the outer wall of the outer convex ring; the lining plate and the sealing cover are combined to form an oil seal body, the outer protruding ring is located in the groove, the groove is attached to the rubber ring, the outer protruding ring is embedded into the outer groove of the sealing cover, and the rubber ring on the outer protruding ring is attached to the inner wall of the sealing cover, so that a waterproof and mud-proof barrier resistant to corrosion is formed. The situation that due to long-term contact between the lining plate body and muddy water, the lining plate loses smoothness due to corrosion and rusting, double abrasion is caused to the sealing cover, and operation is seriously affected is avoided.

Description

Technical Field

[0001] The utility model relates to a waterproof oil seal for a crawler track, belonging to the technical field of sealing devices. Background Art

[0002] The chassis of the harvester is in a muddy working environment for a long time, and requires a strong waterproof and mud-proof effect. However, the existing oil seals have a simple sealing structure, and a single oil seal has fewer sealing waterproof lips. Most of them are metal liners, which are severely corroded after long-term use, have poor waterproof and mud-proof effects, and require frequent replacement, which seriously affects the harvesting efficiency. Utility Model Content

[0003] The utility model aims at the problems existing in the prior art and provides a waterproof oil seal for a track machine chassis supporting roller guide wheel.

[0004] The purpose of the utility model is achieved through the following technical scheme: a waterproof oil seal for a track chassis supporting wheel guide wheel, comprising a lining plate and a sealing cover, an inner convex ring is provided at the center of one side of the lining plate, an outer convex ring is provided at the outer periphery of the inner convex ring, 2-3 grooves are provided on one side of the sealing cover, and the diameters of the 2-3 grooves increase successively along the diameter direction of the sealing cover with the center of the sealing cover as the starting point; a rubber ring is provided on the outer wall of the outer convex ring; the lining plate and the sealing cover are combined to form an oil seal body, the outer convex ring is located in the groove, and the groove is fitted with the rubber ring.

[0005] The outer wall of the outer convex ring is provided with a clamping groove, and a rubber ring is arranged in the clamping groove.

[0006] The rubber ring protrudes from the slot.

[0007] The outer wall of the rubber ring is provided with multiple layers of raised lips.

[0008] The lining plate is an annular metal lining plate, and the sealing cover is an annular rubber body.

[0009] The outer convex ring is made of corrosion-resistant and rust-proof material, such as nylon, plastic, etc.

[0010] The outer convex ring is embedded in the outer groove of the sealing cover, and the rubber ring on the outer convex ring fits with the inner wall of the sealing cover to form a waterproof and mud-proof barrier that is not afraid of corrosion; the existing crude oil seal is waterproof simply by fitting the groove and the liner, without an outer convex ring and a rubber ring. Without an outer convex ring, the liner body will inevitably come into contact with muddy water for a long time, and corrosion and rust will cause the liner to lose its smoothness, causing double wear on the sealing cover, seriously affecting the operation.

[0011] The utility model has the following beneficial effects: the utility model sets a corrosion-resistant outer convex ring on one side of the iron lining plate, and sets a rubber ring on the outer wall of the outer convex ring, and the rubber ring has multiple convex lips. The inner wall of the groove and the convex lips on the rubber ring are closely matched to form an additional first layer and multiple protection. The outer convex ring is made of corrosion-resistant and rust-proof material, and is not afraid of muddy water corrosion. It can effectively protect the lining plate for a long time, so that the remaining rubber grooves inside can rotate and work on the smooth lining plate for a long time, which greatly delays the working life of the oil seal. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the structure of the sealing cover in Example 1 of the utility model;

[0013] Figure 2 This is a schematic diagram of the structure of the liner in Example 1 of the utility model.

[0014] Among them: 1. lining plate; 2. sealing cover; 3. inner convex ring; 4. outer convex ring; 5. groove; 6. rubber ring. DETAILED DESCRIPTION

[0015] The utility model will be further described below in conjunction with the accompanying drawings and the accompanying description.

[0016] Example 1

[0017] A waterproof oil seal for a track chassis supporting wheel guide wheel comprises a lining plate 1 and a sealing cover 2, wherein the lining plate 1 is an annular metal lining plate; the sealing cover 2 is an annular rubber body; the lining plate 1 and the sealing cover 2 are combined to form an oil seal body; an inner convex ring 3 is provided at the center of one side of the lining plate 1, and an outer convex ring 4 is provided at the outer periphery of the inner convex ring 3; three grooves 5 are provided at the side of the sealing cover 2 opposite to the substrate 1, and the diameters of the three grooves 5 are gradually increased along the diameter direction of the sealing cover 2 with the center of the circle of the sealing cover 2 as the starting point; a rubber ring 6 is provided on the outer wall of the outer convex ring 4, and the rubber ring 6 has multiple layers of raised lips; the outer convex ring 4 is located in the groove of the outermost circle, and the rubber ring 6 fits tightly with the groove of the outermost circle to form a sealing structure.

[0018] Example 2

[0019] A waterproof oil seal for a track chassis supporting wheel guide wheel comprises a lining plate 1 and a sealing cover 2, wherein the lining plate 1 is an annular metal lining plate, and the sealing cover 2 is an annular rubber body; the lining plate 1 and the sealing cover 2 are combined to form an oil seal body; an inner convex ring 3 is provided at the center of one side of the lining plate 1, an outer convex ring 4 is provided at the outer periphery of the inner convex ring 3, a groove is provided on the outer wall of the outer convex ring 4, a rubber ring 6 is provided in the groove, and a multi-layer raised lip is provided on the outer wall of the rubber ring 6; three grooves 5 are provided on the side of the sealing cover 2 opposite to the lining plate 1, and the diameters of the three grooves 5 are increased successively along the diameter direction of the sealing cover 2 with the center of the circle of the sealing cover 2 as the starting point, and the rubber ring 6 ensures that the outer convex ring 4 fits tightly with the groove 5 to form a sealing structure.

[0020] The above is only a preferred embodiment of the utility model. For the convenience of manufacturing, the outer peripheral convex ring can appropriately reduce some corrosion resistance by electroplating an anti-rust layer on the metal material. Any modification, equivalent replacement, improvement, etc. made to the above embodiment based on the technical essence of the utility model shall be included in the protection scope of the utility model.

Claims

1. A waterproof oil seal for a track chassis supporting wheel guide wheel, characterized in that: The invention comprises a lining plate (1) and a sealing cover (2), wherein an inner convex ring (3) is provided at the center of one side of the lining plate (1), an outer convex ring (4) is provided on the outer periphery of the inner convex ring (3), and 2-3 grooves (5) are provided on one side of the sealing cover (2), and the diameters of the 2-3 grooves (5) are increased in sequence along the diameter direction of the sealing cover (2) with the center of the circle of the sealing cover (2) as the starting point; a rubber ring (6) is provided on the outer wall of the outer convex ring (4); the lining plate (1) and the sealing cover (2) are combined to form an oil seal body, the outer convex ring (4) is located in the groove (5), and the groove (5) is fitted with the rubber ring (6).

2. The waterproof oil seal for the track chassis roller guide wheel according to claim 1, characterized in that: The outer wall of the outer convex ring (4) is provided with a clamping groove, and a rubber ring (6) is provided in the clamping groove.

3. The waterproof oil seal for the track chassis roller guide wheel according to claim 2, characterized in that: The rubber ring (6) protrudes from the slot.

4. The waterproof oil seal for the track chassis roller guide wheel according to claim 1, characterized in that: The outer wall of the rubber ring (6) is provided with multiple layers of raised lips.

5. The waterproof oil seal for the track chassis roller guide wheel according to claim 1, characterized in that: The lining plate (1) is an annular metal lining plate, and the sealing cover (2) is an annular rubber body.

6. The waterproof oil seal for the track chassis roller guide wheel according to claim 1, characterized in that: The outer convex ring is made of corrosion-resistant and rust-proof material.

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