Rolling zone locking cylinder guide sleeve and sealing device thereof

Abstract

This utility model discloses a guide sleeve for a rolling mill locking cylinder and its sealing device, relating to the field of locking cylinder auxiliary technology. The utility model includes O-rings at both ends, with a U-shaped sealing ring positioned between the two O-rings. The U-shaped sealing ring includes a first sealing ring and a second sealing ring, which are sequentially arranged along the axial direction of the guide sleeve; this addresses the problems of poor sealing effect and short sealing life in existing locking cylinders.

Description

Technical Field

[0001] This utility model relates to the field of locking cylinder auxiliary technology, specifically, it is a guide sleeve for a rolling zone locking cylinder and its sealing device. Background Technology

[0002] A locking cylinder is a device used to ensure that a hydraulic or pneumatic cylinder is stably locked in a specific position. It is widely used in various industrial equipment to improve equipment reliability and production efficiency. It is a key industrial component that ensures the stability and reliability of equipment during operation through multiple locking mechanisms. Its design and optimization are of great significance for improving production efficiency, reducing failure rates, and extending equipment life.

[0003] The existing locking cylinders frequently experience oil leakage from the guide sleeve during operation. Disassembly and analysis revealed that the guide sleeve contains only one type of sealing ring, and the sealing ring is incorrectly positioned. Frequent opening of the locking cylinder causes the seal to easily fold outwards, leading to oil leakage and significant pollution of the circulating water. Furthermore, frequent replacement of the locking cylinder significantly impacts normal roller and groove changing operations, resulting in considerable delays. Therefore, extending the seal's service life, preventing oil leakage and pollution of the circulating water, improving operating time, and reducing spare parts usage and consumption are issues that steel production enterprises need to prioritize and address. Utility Model Content

[0004] The purpose of this invention is to provide a sealing device for the guide sleeve of a locking cylinder in a locking zone, so as to solve the problems of poor sealing effect and short sealing life of existing locking cylinders.

[0005] To solve the above problems, the present invention adopts the following technical means:

[0006] A sealing device for a locking cylinder guide sleeve includes O-rings at both ends, and a U-shaped sealing ring is provided between the two O-rings. The U-shaped sealing ring includes a first sealing ring and a second sealing ring, which are arranged sequentially along the axial direction of the guide sleeve.

[0007] Preferably, the U-shaped opening of the first sealing ring is disposed away from the shaft, the U-shaped opening of the first sealing ring is disposed on its outer side wall, and the inner ring wall of the first sealing ring is slidably fitted to the surface of the shaft.

[0008] Furthermore, the U-shaped opening of the second sealing ring faces the shaft, the U-shaped opening of the second sealing ring is located on its inner sidewall, and the inner ring wall of the second sealing ring is slidably fitted to the surface of the shaft.

[0009] Furthermore, the distance between the first sealing ring and the O-ring is less than the distance between the first sealing ring and the second sealing ring, and the distance between the second sealing ring and the O-ring is less than the distance between the second sealing ring and the first sealing ring.

[0010] Meanwhile, a locking cylinder guide sleeve for a tethered area includes a sleeve body that extends through both ends, with a shaft coaxially disposed within the sleeve body, and the inner wall of the sleeve body is equipped with the aforementioned sealing device for the locking cylinder guide sleeve for a tethered area.

[0011] Furthermore, the inner wall of the sleeve is provided with first annular grooves at both ends, the O-ring is disposed forward in the first annular groove, the inner wall of the sleeve is provided with a second annular groove between the two first annular grooves, the outer ring of the second sealing ring is embedded in the second annular groove, the inner wall of the first annular groove is fitted with the O-ring, and the second annular groove is fitted with the outer ring of the second sealing ring.

[0012] This utility model has the following beneficial effects during use:

[0013] Through a novel sealing structure, O-rings at both ends provide head-end and tail-end sealing without affecting the reciprocating movement of the shaft. In other words, O-rings provide the basic sealing effect. A first and second sealing ring, positioned between the two O-rings, further enhance the seal. Both the first and second sealing rings are U-shaped, allowing the U-shaped opening to form leakage buffer chambers or sealing reinforcement chambers at different locations. This increases the overall sealing effect of the device from two aspects, effectively solving the problems of easy oil leakage, poor sealing performance, and short seal life in existing locking cylinder guide sleeves. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of the guide sleeve of this utility model.

[0015] Among them, 1-O-ring seal, 2-first sealing ring, 3-second sealing ring, 4-shaft, 5-sleeve, 6-first annular groove, and 7-second annular groove. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can typically be arranged and designed in various different configurations.

[0017] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0018] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other.

[0019] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0020] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are only used for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0021] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0022] Please refer to Figure 1 As shown, a sealing device for a locking cylinder guide sleeve includes O-rings 1 at both ends, and a U-shaped sealing ring is provided between the two O-rings 1. The U-shaped sealing ring includes a first sealing ring 2 and a second sealing ring 3, which are arranged sequentially along the axial direction of the guide sleeve.

[0023] Thus, through this novel sealing structure, the O-rings 1 located at both ends provide head-end and tail-end sealing without affecting the reciprocating movement of the shaft 4. In other words, the O-rings provide the basic sealing effect. The first sealing ring 2 and the second sealing ring 3 located between the two O-rings further enhance the seal. Both the first sealing ring 2 and the second sealing ring 3 are U-shaped sealing rings, so that the U-shaped opening of the U-ring can form leakage buffer cavities or sealing reinforcement cavities at different corresponding positions. This increases the sealing effect of the entire sealing device from two aspects, effectively solving the problems of easy oil leakage, poor sealing performance, and poor seal life of existing locking cylinder guide sleeves.

[0024] Specifically, the first sealing ring 2 and the second sealing ring 3 serve different functions. The U-shaped opening of the first sealing ring 2 faces away from the shaft 4, and the U-shaped opening of the first sealing ring 2 is located on its outer wall. The inner ring wall of the first sealing ring 2 is slidably fitted against the surface of the shaft 4.

[0025] In this way, the U-shaped opening of the first sealing ring 2 and the guide sleeve can form the aforementioned sealing reinforcement cavity. The first sealing ring 2 is fixedly connected to the inner wall of the guide sleeve. In this way, the U-shaped cavity of the first sealing ring 2 is sealed, and the air pressure sealed inside can ensure that the inner ring of the first sealing ring 2 is always tightly against the outer wall of the shaft 4.

[0026] In addition, for the second sealing ring 3, the U-shaped opening of the second sealing ring 3 is set towards the shaft 4, the U-shaped opening of the second sealing ring 3 is located on its inner sidewall, and the inner ring wall of the second sealing ring 3 is slidably fitted to the surface of the shaft 4.

[0027] In this way, the U-shaped opening of the inner ring of the second sealing ring 3 slides in contact with the shaft 4, and the U-shaped cavity of the second sealing ring 3 is an unsealed cavity. Even if oil leakage occurs below, the leaked oil can accumulate in the cavity between the U-shaped cavity and the shaft 4.

[0028] Furthermore, the distance between the first sealing ring 2 and the O-ring 1 is less than the distance between the first sealing ring 2 and the second sealing ring 3, and the distance between the second sealing ring 3 and the O-ring 1 is less than the distance between the second sealing ring 3 and the first sealing ring 2.

[0029] In addition, a locking cylinder guide sleeve for a tying area includes a sleeve body 5 that extends through both ends, a shaft 4 that is coaxially disposed inside the sleeve body 5, and the inner wall of the sleeve body 5 is constructed with the aforementioned locking cylinder guide sleeve sealing device.

[0030] Specifically, the inner wall of the sleeve 5 has a first annular groove 6 at both ends, the O-ring 1 is disposed forward in the first annular groove 6, the inner wall of the sleeve 5 has a second annular groove 7 between the two first annular grooves 6, the outer ring of the second sealing ring 3 is embedded in the second annular groove 7, the inner wall of the first annular groove 6 is fitted with the O-ring 1, and the second annular groove 7 is fitted with the outer ring of the second sealing ring 3.

[0031] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A sealing device for a guide bushing of a roll gap locking cylinder, characterized in that It includes O-rings (1) at both ends, and a U-ring is provided between the two O-rings (1). The U-ring includes a first sealing ring (2) and a second sealing ring (3). The first sealing ring (2) and the second sealing ring (3) are arranged sequentially along the axial direction of the guide sleeve.

2. The sealing device of the guide sleeve of the pinch roll cylinder according to claim 1, characterized in that, The U-shaped opening of the first sealing ring (2) is set away from the shaft (4), the U-shaped opening of the first sealing ring (2) is set on its outer side wall, and the inner ring wall of the first sealing ring (2) is slidably attached to the surface of the shaft (4).

3. A sealing device for a guide bushing of a roll gap locking cylinder according to claim 1 or 2, characterized in that The U-shaped opening of the second sealing ring (3) is set towards the shaft (4), the U-shaped opening of the second sealing ring (3) is located on its inner side wall, and the inner ring wall of the second sealing ring (3) is slidably attached to the surface of the shaft (4).

4. The seal assembly of claim 1, wherein: The distance between the first sealing ring (2) and the O-ring (1) is less than the distance between the first sealing ring (2) and the second sealing ring (3), and the distance between the second sealing ring (3) and the O-ring (1) is less than the distance between the second sealing ring (3) and the first sealing ring (2).

5. A guide sleeve for a rolling zone locking cylinder, characterized in that, It includes a sleeve (5) with both ends through it, and a shaft (4) is coaxially disposed inside the sleeve (5). The inner wall of the sleeve (5) is constructed with the rolling zone locking cylinder guide sleeve sealing device as described in any one of claims 1 to 4.

6. A nip lock cylinder guide sleeve according to claim 5, wherein, The inner wall of the sleeve (5) has a first annular groove (6) at both ends. The O-ring (1) is positioned forward in the first annular groove (6). The inner wall of the sleeve (5) is positioned between the two first annular grooves (6) and has a second annular groove (7). The outer ring of the second sealing ring (3) is embedded in the second annular groove (7). The inner wall of the first annular groove (6) is fitted with the O-ring (1), and the second annular groove (7) is fitted with the outer ring of the second sealing ring (3).

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