A multi-specification ckw sliding ring piston seal expansion device

Abstract

The utility model belongs to the technical field of the expansion of the sliding ring piston seal, especially relates to a multi-specification CKW sliding ring piston seal expansion device, including workbench, sliding ring expansion conical matrix and expansion drive mechanism, sliding ring expansion conical matrix sets the spacing expansion ring that is ladder -shaped distribution along its height direction a plurality of rounds, and sliding ring expansion conical matrix includes the conical unit petal body of circumferential array and spacing connecting sleeve ring, and the lower end of each conical unit petal body is slidably connected on the workbench through sliding mechanism, so that it can reciprocate and slide along the radial direction, and spacing connecting sleeve ring is arranged at the upper end of sliding ring expansion conical matrix, and a plurality of conical unit petal bodies are limited, fixed and connected to form the integral sliding ring expansion conical matrix, and expansion drive mechanism drives the outward expansion of sliding ring expansion conical matrix, the utility model provides a multi-specification CKW sliding ring piston seal expansion device, has the advantages of convenient operation, good applicability, good generalization and the like.

Description

Technical Field

[0001] This utility model belongs to the field of slip ring piston sealing expansion technology, specifically relating to a multi-specification CKW slip ring piston sealing expansion device. Technical Background

[0002] CKW slip ring piston seals are a typical sealing structure for hydraulic cylinders, characterized by high pressure resistance, high temperature resistance, acid and alkali resistance, low friction coefficient, and strong anti-contamination ability. They are widely used in various machine tools and engineering machinery equipment. During assembly, the CKW slip ring needs to be installed into the piston seal groove.

[0003] Because the inner diameter of CKW slip rings is generally more than 7 mm smaller than the outer diameter of the piston, the CKW slip rings need to be expanded for assembly. Since each company has multiple hydraulic cylinder specifications, there are numerous CKW slip ring seal specifications. According to the commonly used piston diameter series, there are 39 specifications ranging from φ40 to φ280. If a company were to make a dedicated expanding die for each specification, it would be time-consuming and labor-intensive. Currently, the commonly used CKW slip ring piston seal expansion uses tapered expansion for each specification, followed by push-fitting with a push-sleeve. This lack of versatility and high investment of manpower and resources has the following main drawbacks:

[0004] First, there is a lack of versatility: each specification of tapered sleeve and push sleeve can only meet the needs of one type of CKW slip ring. Users have to manufacture many CKW slip ring devices according to different cylinder diameters of hydraulic cylinders. Especially when developing new products, the inability to replenish tapered sleeves and push sleeves in time affects the progress of new product development.

[0005] Secondly, the manufacturing cost is high: the production of various specifications of CKW slip rings, including expansion sleeves and push sleeves, increases the manufacturing cost.

[0006] Third, the operation is cumbersome: because the push sleeve needs to be pressed in and out, it increases the complexity of the operation. Utility Model Content

[0007] This invention provides a multi-specification CKW slip ring piston sealing expansion device, which can solve the problems pointed out in the background art.

[0008] A multi-specification CKW slip ring piston sealing expansion device includes a worktable, a slip ring expansion conical body, and an expansion driving mechanism. The slip ring expansion conical body has several stepped limiting expansion rings arranged along its height direction. The slip ring expansion conical body includes a circumferential array of conical unit petals and limiting connecting rings. The lower end of each conical unit petal is slidably connected to the worktable via a sliding mechanism, allowing it to slide radially back and forth. The limiting connecting ring is located at the upper end of the slip ring expansion conical body, limiting, fixing, and connecting several conical unit petals to form an integral slip ring expansion conical body. The expansion driving mechanism drives the slip ring expansion conical body to expand outwards.

[0009] Preferably, the limiting connecting collar is an elastic ring hoop, and the upper end of the slip ring expanded conical tire body is provided with a matching ring groove.

[0010] Preferably, the sliding mechanism includes a sliding connecting seat and a slide rail, the sliding connecting seat being slidably connected to the upper part, and the lower end of the conical unit petal being connected to the sliding connecting seat.

[0011] Preferably, the lower end of the conical unit petal is detachably connected to the sliding connecting seat.

[0012] Preferably, the sliding connecting seat is provided with a through bolt, and the lower end of the conical unit petal is provided with a through hole that cooperates with the through bolt to achieve a detachable connection.

[0013] Preferably, the workbench is provided with an expansion limiting ring that is concentric with the expansion conical body of the slip ring.

[0014] Preferably, the expansion drive mechanism includes a cylinder, a connecting shaft, and a fixed pressure cap. The slip ring expansion conical body is a conical cylinder. The cylinder is fixed on the worktable and disposed within the slip ring expansion conical body, with the cylinder being concentric with it. The sliding end of the upper end of the cylinder is connected to the connecting shaft. The upper end of the connecting shaft extends through the slip ring expansion conical body and connects to the fixed pressure cap, which presses against the top of the slip ring expansion conical body.

[0015] Beneficial effects: This utility model provides a multi-specification CKW slip ring piston sealing expansion device, which has the advantages of convenient operation, good applicability, and versatility. First, it uses an expansion drive mechanism as a power source, solving the problem of manual expansion operation being time-consuming and laborious. Second, it designs an expansion body sliding mechanism to ensure accurate and smooth expansion process. Third, it uses an expansion limiting ring to position the expansion size, ensuring accurate and convenient expansion. Fourth, it uses a slip ring expansion conical body and sets several limiting expansion rings distributed in a stepped manner, which has better applicability and can adapt to slip rings of various diameters. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model.

[0017] Figure 2 This is a partial schematic diagram of the present invention. Figure 1 ,

[0018] Figure 3 This is a partial schematic diagram of the present invention. Figure 2 ,

[0019] Figure 4 This is a cross-sectional schematic diagram of the present invention.

[0020] Explanation of reference numerals in the attached figures:

[0021] Numbered in the diagram: Workbench 1; Expanding limiting ring 11; Slip ring expanding conical body 2; Limiting expansion ring 21; Conical unit body 22; Perforation 221; Limiting connecting collar 23; Expanding drive mechanism 3; Cylinder 31; Connecting shaft 32; Fixed pressure cap 33; Sliding mechanism 4; Sliding connecting seat 41; Slide rail 42; Through bolt 43. Detailed Implementation

[0022] The following describes a specific embodiment of the present invention in detail with reference to the accompanying drawings. However, it should be understood that the scope of protection of the present invention is not limited to the specific embodiment.

[0023] Example 1: As Figure 1-4 As shown in the figure, this utility model provides a multi-specification CKW slip ring piston sealing expansion device, including a worktable 1, a slip ring expansion conical body 2, and an expansion driving mechanism 3; the slip ring expansion conical body 2 is provided with several stepped limiting expansion rings 21 along its height direction, the slip ring expansion conical body 2 includes a circumferential array of conical unit petals 22 and a limiting connecting collar 23, the conical unit petals 22 can be six, eight, etc., the lower end of each conical unit petal 22 is slidably connected to the worktable 1 through a sliding mechanism 4, so that it can slide back and forth radially, the limiting connecting collar 23 is provided at the upper end of the slip ring expansion conical body 2, limiting, fixing and connecting several conical unit petals 22 to form an integral slip ring expansion conical body 2, the expansion driving mechanism 3 drives the slip ring expansion conical body 2 to expand outward.

[0024] Specifically, the limiting connecting collar 23 is an elastic ring hoop, the upper end of the slip ring expanding conical body 2 is provided with a matching ring groove, the sliding mechanism 4 includes a sliding connecting seat 41 and a slide rail 42, the sliding connecting seat 41 is slidably connected to the slide rail 42, the lower end of the conical unit petal 22 is connected to the sliding connecting seat 41, the lower end of the conical unit petal 22 is detachably connected to the sliding connecting seat 41, the sliding connecting seat 41 is provided with a through bolt 43, and the lower end of the conical unit petal 22 is provided with a through hole 221 that cooperates with the through bolt 43 to achieve a detachable connection.

[0025] Specifically, the expansion drive mechanism 3 includes a cylinder 31, a connecting shaft 32, and a fixed pressure cap 33. The slip ring expansion conical body 2 is a conical cylinder. The cylinder 31 is fixed on the workbench 1 and disposed inside the slip ring expansion conical body 2, with the cylinder 31 being concentric with it. The sliding end of the upper end of the cylinder 31 is connected to the connecting shaft 32. The upper end of the connecting shaft 32 passes through the slip ring expansion conical body 2 and is connected to the fixed pressure cap 33. The fixed pressure cap 33 presses against the top of the slip ring expansion conical body 2.

[0026] In some embodiments, the workbench 1 is provided with an expansion limiting ring 11 that is co-centered with the slip ring expansion conical body 2.

[0027] The working principle of this utility model is as follows: The CKW slip ring is sleeved on the expansion limiting ring 11 of the corresponding size. The expansion driving mechanism 3 drives the fixed pressure cap 33 to press down, thereby driving the lower end of the slip ring expansion conical body 2 to expand radially. Under the guidance of the sliding mechanism 4, it slides in a guided manner. During this process, the outer diameter of the expansion conical body 2 gradually increases, realizing the expansion of the CKW slip ring and achieving the expansion size of the CKW slip ring to meet the sealing assembly requirements of the CKW piston.

[0028] The above-disclosed embodiments are only a few specific examples of the present utility model. However, the embodiments of the present utility model are not limited thereto. Any changes that can be conceived by those skilled in the art should fall within the protection scope of the present utility model.

Claims

1. A multi-specification CKW slip ring piston sealing expansion device, characterized in that: The system includes a worktable (1), a slip ring expanding conical body (2), and an expansion drive mechanism (3). The slip ring expanding conical body (2) has several stepped limiting expansion rings (21) arranged along its height direction. The slip ring expanding conical body (2) includes a circumferential array of conical unit petals (22) and a limiting connecting collar (23). The lower end of each conical unit petal (22) is slidably connected to the worktable (1) through a sliding mechanism (4) so ​​that it can slide back and forth radially. The limiting connecting collar (23) is located at the upper end of the slip ring expanding conical body (2) to limit, fix, and connect several conical unit petals (22) to form an integral slip ring expanding conical body (2). The expansion drive mechanism (3) drives the slip ring expanding conical body (2) to expand outward.

2. The multi-specification CKW slip ring piston sealing expansion device according to claim 1, characterized in that: The limiting connecting collar (23) is an elastic ring hoop, and the upper end of the slip ring expanding conical tire body (2) is provided with a ring groove that matches it.

3. The multi-specification CKW slip ring piston sealing expansion device according to claim 1, characterized in that: The sliding mechanism (4) includes a sliding connecting seat (41) and a slide rail (42). The sliding connecting seat (41) is slidably connected to the slide rail (42), and the lower end of the conical unit petal (22) is connected to the sliding connecting seat (41).

4. The multi-specification CKW slip ring piston sealing expansion device according to claim 3, characterized in that: The lower end of the conical unit petal (22) is detachably connected to the sliding connecting seat (41).

5. The multi-specification CKW slip ring piston sealing expansion device according to claim 4, characterized in that: The sliding connecting seat (41) is provided with a through bolt (43), and the lower end of the conical unit petal (22) is provided with a through hole (221) that cooperates with the through bolt (43) to achieve a detachable connection.

6. A multi-specification CKW slip ring piston sealing expansion device according to any one of claims 1-4, characterized in that: The workbench (1) is provided with an expansion limiting ring (11) which is co-centered with the slip ring expansion conical body (2).

7. A multi-specification CKW slip ring piston sealing expansion device according to any one of claims 1-4, characterized in that: The expansion drive mechanism (3) includes a cylinder (31), a connecting shaft (32), and a fixed pressure cap (33). The slip ring expansion conical body (2) is a conical cylinder. The cylinder (31) is fixed on the workbench (1) and set inside the slip ring expansion conical body (2), with the cylinder (31) being concentric with it. The sliding end of the upper end of the cylinder (31) is connected to the connecting shaft (32). The upper end of the connecting shaft (32) passes through the slip ring expansion conical body (2) and is connected to the fixed pressure cap (33). The fixed pressure cap (33) presses on the top of the slip ring expansion conical body (2).

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