Combined oil seal structure

Abstract

The utility model relates to the technical field of oil seals, in particular to a combined oil seal structure which comprises an oil seal seat, an oil seal is arranged in the oil seal seat, a dust seal abuts against the oil seal, the dust seal is located in the oil seal seat, the oil seal and the dust seal are both fixedly connected with supporting rings, the two supporting rings are both fixedly connected with abutting sleeves, and the abutting sleeves are fixedly connected with the oil seal seat. Two abutting sleeves are arranged on the oil seal seat, cavities are formed in the two abutting sleeves, abutting rings are connected to the abutting sleeves in an abutting mode, pressing plates are fixedly connected to the abutting rings, and the pressing plates are connected with the oil seal seat through connecting mechanisms. The oil seal and the dust seal can be taken out and replaced conveniently.

Description

TECHNICAL FIELD

[0001] The utility model relates to oil seal technical field especially relates to a combined oil seal structure. BACKGROUND

[0002] Oil seal is the customary appellation of general seal, simply say is the seal of lubricating oil. It is the mechanical element for sealing grease, it separates the part needing lubrication in transmission part from the output part, so as to prevent lubricating oil from leaking, the existing oil seal is generally pressed into the oil seal seat by pressing tool when installing, but when the oil seal is damaged and needs to be replaced, due to the existence of the great friction between the oil seal and the oil seal seat, it is difficult to take out. UTILITY MODEL CONTENTS

[0003] The utility model discloses a combined oil seal structure, which solves the problem that the oil seal is difficult to take out due to the great friction between the oil seal and the oil seal seat when the oil seal is damaged and needs to be replaced.

[0004] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0005] A combined oil seal structure is designed, which comprises an oil seal seat, an oil seal arranged in the oil seal seat, a dust seal abutting against the oil seal, a support ring fixedly connected to the oil seal and the dust seal, an abutting sleeve fixedly connected to each support ring, a cavity arranged in each abutting sleeve, an abutting ring abutting against the abutting sleeve, a pressing plate fixedly connected to the abutting ring, and a connecting mechanism connecting the pressing plate and the oil seal seat.

[0006] Preferably, the dust seal is made of PU material.

[0007] Preferably, the oil seal is made of rubber material.

[0008] Preferably, the connecting mechanism comprises a plurality of screws, the plurality of screws are threaded through the pressing plate, a plurality of threaded holes are equidistantly arranged on the circumference of the oil seal seat, and the plurality of screws are threadedly connected to the threaded holes, respectively.

[0009] Preferably, a double sealing lip is arranged on the dust seal.

[0010] Preferably, a positioning rod is fixedly connected to the pressing plate, a positioning hole is arranged on the oil seal seat, and the positioning rod is inserted into the positioning hole.

[0011] Preferably, the screw is a rustproof screw.

[0012] The utility model provides a kind of combined oil seal structure, beneficial effect lies in: by adopting connecting mechanism to press plate exert pressure, make abutment ring move downwards, make the hydraulic oil in abutment sleeve cavity be compressed, so that abutment sleeve occurs radial expansion, moves towards oil seal seat, and abutment fixed with oil seal seat, complete installation, when needing to disassemble, after disassembling press plate, abutment sleeve resets, so that abutment sleeve and oil seal seat inner wall are separated, so that oil seal and dust seal are taken out and replaced. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is a kind of combined oil seal structure's structural schematic diagram that the utility model proposes;

[0014] Figure 2 It is a kind of combined oil seal structure's perspective view that the utility model proposes;

[0015] Figure 3 It is a kind of combined oil seal structure's perspective view that the utility model proposes;

[0016] Figure 4 It is a kind of combined oil seal structure Figure 3 Front view that the utility model proposes.

[0017] In the drawing: 1, oil seal seat;2, press plate;3, screw;4, screw hole;5, positioning rod;6, positioning hole;7, abutment ring;8, dust seal;9, abutment sleeve;10, oil seal;11, support ring. DETAILED DESCRIPTION

[0018] The technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings in the embodiments of the utility model, and apparently, the described embodiments are only part of the embodiments of the utility model, not all the embodiments.

[0019] Embodiment 1: refer to Figures 1-4 A kind of combined oil seal structure, including oil seal seat 1, oil seal 10 is provided in oil seal seat 1, oil seal 10 is made of rubber material, oil seal 10 is abutted with dust seal 8, dust seal 8 is provided with double sealing lip, dust seal 8 is located in oil seal seat 1, dust seal 8 is made of PU material, PU is harder than rubber and self-lubricating effect is better, in the case where shaft exists axial excursion, can scrape dry mud, effectively play the effect of dustproof, anti-silt.

[0020] The support ring 11 is fixedly connected to the oil seal 10 and the dust seal 8, and the support ring 11 plays a supporting role to prevent the abutting sleeve 9 from moving towards the axis direction of the oil seal 10 when being extruded, and the abutting sleeve 9 is fixedly connected to the two support rings 11, and the abutting sleeve 9 is provided with a cavity in the two abutting sleeves 9, and the hydraulic oil is arranged in the cavity and filled according to the actual situation, and the abutting ring 7 is abutted to the abutting sleeve 9, and the pressing plate 2 is fixedly connected to the abutting ring 7, and the pressing plate 2 is connected to the oil seal seat 1 through the connecting mechanism, and the connecting mechanism is used to apply pressure to the pressing plate 2, so that the abutting ring 2 moves downward, and the hydraulic oil in the cavity of the abutting sleeve 9 is compressed, so that the abutting sleeve 9 is radially expanded and moves towards the oil seal seat 1 to abut and fix the oil seal seat 1 to complete the installation, and when disassembly is needed, the abutting sleeve 9 is reset after the pressing plate 2 is disassembled, so that the abutting sleeve 9 is separated from the inner wall of the oil seal seat 1, so that the oil seal 10 and the dust seal 8 can be taken out and replaced.

[0021] The connecting mechanism comprises a plurality of screws 3, the plurality of screws 3 are screwed through the pressing plate 2, the oil seal seat 1 is provided with a plurality of threaded holes 4 at equal intervals in the circumference, and the plurality of screws 3 are respectively screwed with the threaded holes 4, and the screw 3 is a rust-proof screw, so that the pressing plate 2 is fixed by being screwed with the threaded hole 4, and the pressing plate 2 applies pressure to the abutting ring 7.

[0022] When disassembling, the screw 3 is loosened, and the pressing plate 2 is disassembled, and because the abutting sleeve 9 is not extruded, the radial expansion of the abutting sleeve 9 disappears, so that there is a gap between the abutting sleeve 9 and the oil seal seat 1, and the frictional force during taking out is reduced, so that the oil seal 10 and the dust seal 8 can be taken out and replaced.

[0023] In example 1, it is difficult to align the threaded hole 4 with the through hole on the pressing plate, and the installation of the screw 2 is inconvenient, and referring to Figures 2-4 , as another preferred embodiment of the utility model, on the basis of example 1, the positioning rod 5 is fixedly connected to the pressing plate 2, the positioning hole 6 is formed in the oil seal seat 1, and the positioning rod 5 is inserted into the positioning hole 6, so that the positioning rod 5 is inserted into the positioning hole 6, so that the threaded hole 4 is aligned with the through hole, so that the screw 3 is put into the through hole, and the screw 3 is directly twisted to be screwed with the threaded hole 4.

[0024] The above is only a preferred specific implementation manner of the utility model, but the protection scope of the utility model is not limited to this, and any person skilled in the art can make equivalent replacement or change according to the technical scheme and the utility model concept of the utility model within the technical range disclosed by the utility model, which should be covered in the protection scope of the utility model.

Claims

1. A combined oil seal structure comprising an oil seal seat (1), characterized in that, The oil seal seat (1) is provided with an oil seal (10), the oil seal (10) is provided with a dust seal (8), the dust seal (8) is located in the oil seal seat (1), the oil seal (10) and the dust seal (8) are fixedly connected with a supporting ring (11), the two supporting rings (11) are fixedly connected with an abutting sleeve (9), the two abutting sleeves (9) are provided with cavities, the abutting sleeve (9) is provided with an abutting ring (7), the abutting ring (7) is fixedly connected with a pressing plate (2), and the pressing plate (2) is connected with the oil seal seat (1) through a connecting mechanism.

2. The combined oil seal structure according to claim 1, wherein The dust seal (8) is made of PU material.

3. The combination oil seal structure of claim 1, wherein The oil seal (10) is made of rubber material.

4. The combination oil seal structure of claim 1 wherein, The connecting mechanism comprises a plurality of screws (3), the plurality of screws (3) are threaded through the pressing plate (2), a plurality of threaded holes (4) are circumferentially and equidistantly formed on the oil seal seat (1), and the plurality of screws (3) are threadedly connected with the threaded holes (4) respectively.

5. The combination oil seal structure of claim 4, wherein The dust seal (8) is provided with double sealing lips.

6. The combination oil seal structure of claim 4 wherein, The pressing plate (2) is fixedly connected with a positioning rod (5), the oil seal seat (1) is provided with a positioning hole (6), and the positioning rod (5) is inserted into the positioning hole (6).

7. The combination oil seal structure of claim 4 wherein, The screw (3) is a rust-proof screw.

Images