parking cylinder

Abstract

The utility model discloses a parking piston of parking cylinder, include: base body, the surface of base body is seted up at least two groups of installation groove, sealing assembly, including setting in the sealing ring no.

Description

Technical Field

[0001] This utility model relates to the field of parking cylinder technology, and in particular to the parking piston of a parking cylinder. Background Technology

[0002] In fields such as industrial machinery, vehicle braking systems, and engineering equipment, parking cylinders are core components for parking, positioning, and braking of equipment, and their performance directly affects the operational safety and reliability of the equipment.

[0003] Existing piston sidewalls typically have seals fitted inside the grooves to seal the gap between the cylinder and the piston. However, during the reciprocating motion of the piston, the seals rub against the cylinder wall and wear down, which can reduce the sealing effect of the piston. Utility Model Content

[0004] This utility model addresses the shortcomings of existing technologies by providing the following technical solution:

[0005] The parking piston of the parking cylinder includes:

[0006] The substrate has at least two sets of mounting grooves on its surface;

[0007] The sealing assembly includes a sealing ring 1 disposed in the mounting groove. The sealing ring 1 is provided with multiple sets of V-shaped elastic sheets. An arc-shaped groove is formed on the outer circumferential surface of the sealing ring 1 within the area enclosed by the elastic sheets. A sealing ring 2 is bonded to the arc-shaped groove. Under the action of elastic force, each set of elastic sheets pushes the sealing ring 2 to deform, so that the outer circumferential surface of the sealing ring 2 abuts against the inner wall of the cylinder of the parking cylinder.

[0008] As an improvement to the above technical solution, a reinforcing ring is fixedly provided inside the sealing ring. The reinforcing ring is disposed inside multiple sets of elastic sheets, and the reinforcing ring connects the multiple sets of elastic sheets in series.

[0009] As an improvement to the above technical solution, the inner circumference of the sealing ring is integrally formed with multiple sets of protrusions, and the surface of the base body is provided with a limiting groove that matches the protrusions in the mounting groove.

[0010] As an improvement to the above technical solution, the substrate surface is provided with multiple sets of honeycomb cavities, which are interconnected on the substrate surface to form a mesh structure, and the honeycomb cavities are filled with thermally conductive resin.

[0011] The beneficial effects of this utility model are:

[0012] The continuous inward squeezing force generated by the V-shaped elastic sheet allows the outer circumference of the sealing ring two to fit tightly against the inner wall of the cylinder, forming an initial seal. When a gap occurs between the inner wall of the cylinder and the piston, the elastic restoring force of the V-shaped elastic sheet can drive the sealing ring two to deform outward, automatically filling the gap and achieving dynamic adaptive sealing, ensuring a stable sealing effect.

[0013] When the piston is pressed close to the cylinder wall, causing the sealing ring to be excessively squeezed, the reaction force will compress the V-shaped elastic sheet, effectively preventing the sealing assembly from being damaged by instantaneous impact, protecting the sealing assembly and extending its service life. Attached Figure Description

[0014] Figure 1 This is a front view of the overall structure of this utility model;

[0015] Figure 2 This is a cross-sectional view of the sealing assembly of this utility model;

[0016] Figure 3 This is a schematic diagram of the connection structure between the sealing component and the substrate.

[0017] Reference numerals: 10, substrate; 101, honeycomb cavity; 11, mounting groove; 111, limiting groove; 20, sealing assembly; 21, sealing ring one; 22, protrusion; 23, elastic sheet; 24, sealing ring two; 25, reinforcing ring. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0019] The parking piston of the parking cylinder includes:

[0020] The substrate 10 has at least two sets of mounting grooves 11 on its surface;

[0021] The sealing assembly 20 includes a sealing ring 21 disposed in the mounting groove 11. The sealing ring 21 is provided with multiple sets of V-shaped elastic sheets 23. An arc-shaped groove is formed on the outer circumferential surface of the sealing ring 21 within the area enclosed by the elastic sheets 23. A second sealing ring 24 is bonded to the arc-shaped groove. Under the action of elastic force, each set of elastic sheets 23 pushes the second sealing ring 24 to deform, so that the outer circumferential surface of the second sealing ring 24 abuts against the inner wall of the cylinder of the parking cylinder.

[0022] Specifically, the base 10 is the main structure of the piston, and at least two sets of mounting grooves 11 on its surface provide a fixed space for the sealing assembly 20, ensuring that the sealing ring 21 can be stably installed on the piston and move synchronously with the base 10. Multiple sets of mounting grooves 11 can enhance the sealing reliability and avoid leakage problems caused by the failure of a single seal. The V-shaped structure itself is elastic, and its "V"-shaped opening is in an open state (that is, the included angle of the elastic plate is greater than the angle in the natural state). At this time, the elastic plate will generate an elastic force to restore the natural state, which is manifested as the tendency of the two ends of the V-shaped structure to "contract and squeeze" inward. The two ends will squeeze the sealing ring 24 inward. Under the thrust of the V-shaped elastic plate 23, when the sealing ring 24 is squeezed inward by the elastic plate 23, the arc-shaped groove wall on its outer periphery will "bulge" outward, and its outer periphery surface will tightly press against the inner wall of the cylinder of the parking cylinder to form an initial sealing surface. When the piston moves in the cylinder, the slight unevenness of the inner wall of the cylinder, the dimensional fluctuation caused by temperature changes, or the gap change caused by pressure changes will affect the sealing effect. At this time, the elastic force of the V-shaped elastic plate will continue to act: if a small gap appears between the inner wall of the cylinder and the sealing ring 24, the restoring force of the V-shaped elastic plate 23 will cause the sealing ring 24 to deform outward through the sealing ring 21 to fill the gap.

[0023] If the piston is subjected to pressure and moves closer to the cylinder wall, the sealing ring 24 is slightly squeezed. The reaction force will compress the V-shaped elastic sheet 23, allowing it to temporarily store elastic potential energy and preventing the sealing ring 24 from being damaged due to excessive compression. It will recover its deformation after the pressure changes. The sealing ring 21 and the sealing ring 24 are made of flexible elastic materials (such as rubber, polyurethane, etc.).

[0024] In one embodiment, a reinforcing ring 25 is fixedly disposed inside the sealing ring 21. The reinforcing ring 25 is disposed inside multiple sets of elastic plates 23, and the reinforcing ring 25 connects multiple sets of elastic plates 23 in series. The reinforcing ring 25 itself is a rigid structure and can provide support for the elastic plates 23. When the elastic plates 23 are in the initial open state and generate contraction force, the reinforcing ring 25 will provide reaction force support for the inner side of the elastic plates 23. While the two ends of the elastic plates 23 press the sealing ring 24 inward, their "V"-shaped inner side will abut against the reinforcing ring 25. The rigidity of the reinforcing ring 25 ensures that the contraction force of the elastic plates 23 will not be lost due to its own deformation, but will be efficiently transmitted to the sealing ring 24, pushing it to bulge outward. When the sealing ring 24 is squeezed by the reaction force of the cylinder wall and the elastic plates 23 are further opened, the reinforcing ring 25 can limit the excessive deformation of the inner side of the elastic plates.

[0025] In one embodiment, the inner circumference of the sealing ring 21 is integrally formed with multiple sets of protrusions 22. The surface of the base 10 and the mounting groove 11 are provided with a limiting groove 111 that matches the protrusions 22. When the piston reciprocates in the cylinder, the sealing ring 21 will be subjected to the frictional force of the inner wall of the cylinder or the lateral force of the medium pressure. If only the radial constraint of the mounting groove 11 is relied upon, circumferential rotation may occur, rotating around the axis of the base. After the protrusions 22 are embedded in the limiting groove 111, the mechanical engagement of the two can directly limit the circumferential displacement of the sealing ring 21, ensuring that it moves synchronously with the base 10.

[0026] In one embodiment, the surface of the substrate 10 is provided with multiple sets of honeycomb cavities 101, which are interconnected on the surface of the substrate 10 to form a mesh structure. The honeycomb cavities 101 are filled with thermally conductive resin. During the operation of the piston, the friction with the inner wall of the cylinder generates heat. The mesh structure of the honeycomb cavities 101 increases the surface area of ​​the substrate 10, and the filled thermally conductive resin can quickly absorb the heat generated by the substrate 10.

[0027] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it.

Claims

1. A parking piston for a parking cylinder, characterized in that, include: The substrate (10) has at least two sets of mounting grooves (11) on its surface; The sealing assembly (20) includes a sealing ring 1 (21) disposed in the mounting groove (11). The sealing ring 1 (21) is provided with multiple sets of V-shaped elastic sheets (23). The outer circumferential surface of the sealing ring 1 (21) is provided with an arc-shaped groove in the area surrounded by the elastic sheets (23). A sealing ring 2 (24) is bonded and connected in the arc-shaped groove. Under the action of elastic force, each set of elastic sheets (23) pushes the sealing ring 2 (24) to deform, so that the outer circumferential surface of the sealing ring 2 (24) abuts against the inner wall of the cylinder of the parking cylinder.

2. The parking piston of the parking cylinder according to claim 1, characterized in that: A reinforcing ring (25) is fixedly provided inside the sealing ring (21). The reinforcing ring (25) is disposed inside multiple sets of elastic sheets (23) and the reinforcing ring (25) connects multiple sets of elastic sheets (23) in series.

3. The parking piston of the parking cylinder according to claim 2, characterized in that: The sealing ring (21) has multiple protrusions (22) integrally formed on its inner circumference, and the base (10) has a limiting groove (111) adapted to the protrusions (22) on its surface and in the mounting groove (11).

4. The parking piston of the parking cylinder according to claim 1, characterized in that: The substrate (10) has multiple sets of honeycomb cavities (101) on its surface. The multiple sets of honeycomb cavities (101) are interconnected on the surface of the substrate (10) to form a mesh structure. The honeycomb cavities (101) are filled with thermally conductive resin.

Images