Quick mounting tool for double-lip sealing element

Abstract

A tool body is cylindrical, one end of the tool body is a knocking end, a positioning ring is arranged in the knocking end, an outer pressing ring is arranged at the top end of the outer side wall of the positioning ring, and an inner pressing ring is arranged on the inner circumference of the outer pressing ring. The inner pressing ring is slightly longer than the outer pressing ring; the distance between the outer periphery of the inner pressing ring and the inner periphery of the outer pressing ring is equal to the width of the outer lip end of the double-lip sealing ring. According to the oil film bearing, under the condition that the double-lip sealing piece is not damaged, the compaction installation operation can be efficiently and rapidly completed, the operation efficiency is improved, meanwhile, the sealing effect of the oil film bearing is guaranteed, and the service life is prolonged.

Description

Technical Field

[0001] The utility model relates to a maintenance tool for a roller bearing of a high-speed wire rod finishing mill, in particular to a quick installation tool for a double-lip seal. Background Art

[0002] The finishing mill for high-speed wire production needs to install oil film bearings on the roller shaft of the roller ring due to the high rolling speed. The oil film bearing needs to replace the seal during daily maintenance. The seal is a double-lip seal. In the process of replacing and installing the double-lip seal, the old seal needs to be removed from the seal holder of the oil film bearing, and then the new seal is installed into the seal holder. In the process of installing the seal into the seal holder, due to the small assembly gap, a large pressure is required to press the seal into the seal holder, and because the elasticity of the rubber material is limited, it is necessary to press in symmetrical directions at the same time during the pressing process, otherwise after one end is pressed in, the other end will deviate to the center and it will be difficult to press in again. The current installation process is manual installation without special installation tools. It often requires two people to work together to complete the installation. The installation efficiency is very low, and it is difficult to compact and tighten the double-lip seal during the compaction process, which affects the efficiency of the maintenance operation. In addition, the seal is easily damaged during the compaction process, resulting in poor sealing effect and affecting the service life. Utility Model Content

[0003] In view of the above-mentioned problems, the utility model provides a tool for quickly installing double-lip seals, which ensures that the seals will not be damaged when replacing the double-lip seals of roller oil film bearings, compacts and tightens the seals, improves maintenance efficiency, and increases the service life of the seals.

[0004] The purpose of the utility model is achieved as follows: A quick installation tool for a double-lip seal comprises a tool body, the tool body is cylindrical, one end of which is a striking end, a positioning ring is arranged inside the striking end, the top of the outer wall of the positioning ring is an outer pressure ring, and the inner circumference of the outer pressure ring is arranged with an inner pressure ring; the length of the inner pressure ring is slightly longer than the length of the outer pressure ring; the distance between the outer circumference of the inner pressure ring and the inner circumference of the outer pressure ring is equal to the width of the outer lip end of the double-lip seal ring.

[0005] Furthermore, the inner diameter of the positioning ring matches the diameter of the small end of the roller shaft.

[0006] Furthermore, the inner diameter of the inner pressure ring matches the diameter of the large end of the roller shaft.

[0007] Furthermore, the inner pressure ring is coaxial with the positioning ring.

[0008] The utility model can efficiently and quickly complete the compaction installation operation while ensuring that the double-lip seal is not damaged, thereby improving the operation efficiency, while ensuring the sealing effect of the oil film bearing and increasing the service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a partial cross-sectional structural schematic diagram of the utility model;

[0010] Figure 2 It is a cross-sectional schematic diagram of the utility model in use state;

[0011] Figure 3 It is a cross-sectional schematic diagram of the utility model in a completed use state.

[0012] In the figure: 10-tool body, 1-striking end, 2-positioning ring, 3-inner pressure ring, 4-outer pressure ring, 5-seal holder, 6-double lip seal ring, 7-big end of roller, 8-small end of roller. DETAILED DESCRIPTION

[0013] The present invention is described in detail below with reference to the accompanying drawings and embodiments. Figures 1 to 3 A quick installation tool for double-lip seals includes a tool body 10. The tool body 10 is cylindrical, and one end of the tool body 10 is a knocking end 1, which is used to knock the tool body 10 during installation to push the tool body 10 forward as a whole. A positioning ring 2 is arranged inside the knocking end 1, and the inner diameter of the positioning ring 2 matches the diameter of the small end 8 of the roller shaft. The top of the outer wall of the positioning ring 2 is an outer pressure ring 4, and the inner circumference of the outer pressure ring 4 is provided with an inner pressure ring 3, and the inner diameter of the inner pressure ring 3 matches the diameter of the large end 7 of the roller shaft; the length of the inner pressure ring 3 is slightly longer than that of the outer pressure ring 4, and the inner pressure ring 3 is coaxial with the positioning ring 2; the distance between the outer circumference of the inner pressure ring 3 and the inner circumference of the outer pressure ring 4 is equal to the width of the outer lip end of the double-lip seal ring 6. Example

[0014] During the installation of the double-lip seal of the roller oil film bearing of the high-speed wire rod finishing mill, first install the double-lip seal ring 6 on the large end 7 of the roller, and then install the installation tool body 10 on the small end 8 of the roller (such as Figure 2 As shown in the figure, the compaction position of the positioning tool is aligned by the inner pressure ring 3 and the positioning ring 2, and the position of the double-lip seal ring 6 is fixed through the gap between the inner pressure ring 3 and the outer pressure ring 4. The double-lip seal ring 6 is compacted by pressing the tool body 10 and striking the knocking end 1, so that the double-lip seal ring 6 enters the seal holder 5 and is compacted, thereby quickly and smoothly completing the compaction installation operation of the double-lip seal (as shown in the figure). Figure 3 as shown).

[0015] The tool body 10 is cylindrical in shape, with an inner pressure ring 3 and an outer pressure ring 4 at one end, and a striking end 1 at the other end. A centering ring 2 is provided in the middle of the striking end 1, and the inner diameter of the centering ring 2 is slidably matched with the outer diameter of the small end 8 of the roller shaft. The total length of the tool body 10 is 180 mm, the outer diameter is 167 mm, the wall thickness of the inner pressure ring 3 is 6.5 mm, the wall thickness of the outer pressure ring 4 is 2.5 mm, the spacing between the inner pressure ring 3 and the outer pressure ring 4 is 9.5 mm, the inner pressure ring 3 is slightly longer than the outer pressure ring 4, and the length difference between the outer pressure ring 4 and the inner pressure ring 3 is 2 mm. The inner diameter of the centering ring 2 in the middle of the interior for centering is 107 mm, and the centering ring 2 is 110 mm away from the top surface of the inner pressure ring 3.

[0016] The utility model greatly improves the installation efficiency of the double-lip seal, which is more than three times higher than the prior art, while also ensuring the sealing quality and use effect, and extending the service life of the double-lip seal by one time.

Claims

1. A quick installation tool for a double-lip seal, comprising a tool body, characterized in that: The tool body is cylindrical, one end of which is a striking end, a positioning ring is arranged inside the striking end, the top of the outer wall of the positioning ring is an outer pressure ring, and an inner pressure ring is arranged on the inner circumference of the outer pressure ring; the length of the inner pressure ring is slightly longer than the length of the outer pressure ring; the distance between the outer circumference of the inner pressure ring and the inner circumference of the outer pressure ring is equal to the width of the outer lip end of the double-lip sealing ring.

2. The quick installation tool for double lip seal according to claim 1, characterized in that: The inner diameter of the positioning ring matches the diameter of the small end of the roller shaft.

3. The quick installation tool for double lip seal according to claim 1, characterized in that: The inner diameter of the inner pressure ring matches the diameter of the large end of the roller shaft.

4. The quick installation tool for double lip seal according to claim 1, characterized in that: The inner pressure ring is coaxial with the positioning ring.

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