Hydraulic cylinder with sealing protection mechanism

Abstract

The utility model discloses a hydraulic cylinder with a sealing protection mechanism, relates to the technical field of hydraulic cylinders, and aims to solve the problems that a sealing ring of an existing hydraulic cylinder is single in structure, prone to position deviation when stressed, prone to falling off and poor in sealing protection performance. A first connecting seat is arranged at one end of the cylinder body, a piston rod is arranged in the cylinder body, a first end cover is arranged at one end of the first connecting seat, and a piston rod sealing ring is arranged in the first end cover; the piston rod sealing ring further comprises a center ring, the center ring is arranged in the piston rod sealing ring, extending ring plates are arranged on the upper surface and the lower surface of the center ring, and the extending ring plates and the center ring are of an integrated structure. And the limiting insertion columns are arranged on the outer wall of the center ring, the limiting insertion columns and the center ring are of an integrated structure, the number of the limiting insertion columns is six, the surface of one end of each extension ring plate is provided with a slope opening, and the slope openings and the extension ring plates are of an integrated structure.

Description

TECHNICAL FIELD

[0001] The utility model relates to hydraulic cylinder technical field, concretely is a kind of hydraulic cylinder with sealing protection mechanism. BACKGROUND

[0002] Hydraulic cylinder is the hydraulic energy into mechanical energy, do linear reciprocating motion's hydraulic actuator, it simple structure, work reliably, when it is used to realize reciprocating motion, it is widely used in various mechanical hydraulic systems;

[0003] For example, the Chinese authorized patent (a hydraulic cylinder sealing structure) with announcement number CN215257117U: including cylinder liner, ejector rod and sealing mechanism, the inner cavity of the cylinder liner is provided with cavity for storing hydraulic medium, the ejector rod is vertically inserted into the cavity inner cavity axial direction, the bottom end surface of the ejector rod is fixedly connected with sliding column, and the radial side wall of the sliding column is slidably attached to the radial side wall of the cavity of the cylinder liner, the sealing mechanism includes T-shaped telescopic rod, hollow rubber sealing air bag and top plate.The utility model discloses a kind of hydraulic cylinder sealing structure, by adding sealing mechanism, it can guarantee that hydraulic medium does not leak when cylinder liner and ejector rod are relatively telescopic, even if sealing gasket wears, it also does not affect the sealing property, does not affect the normal use of hydraulic cylinder, simple and practical.

[0004] However, the sealing ring structure of the existing hydraulic cylinder is single, which is easy to deviate in position when stressed, resulting in falling off and poor sealing protection;Therefore, it does not meet the existing needs, and for this, we propose a hydraulic cylinder with sealing protection mechanism. INVENTION CONTENTS

[0005] The utility model aims at providing a kind of hydraulic cylinder with sealing protection mechanism, to solve the problem that the sealing ring structure of the existing hydraulic cylinder is single, which is easy to deviate in position when stressed, resulting in falling off and poor sealing protection as described in the above background art.

[0006] To achieve the above object, the utility model provides the following technical scheme: a kind of hydraulic cylinder with sealing protection mechanism, comprising: cylinder body, the one end of the cylinder body is provided with first connecting seat, the inside of the cylinder body is provided with piston rod, the one end of the first connecting seat is provided with first end cover, the inside of the first end cover is provided with piston rod sealing ring;

[0007] Further comprising:

[0008] Center ring, which is arranged inside the piston rod sealing ring, the upper and lower surfaces of the center ring are provided with extension ring plates, and the extension ring plates and the center ring are an integral structure;

[0009] The limiting insertion column is arranged on the outer wall of the center circle and is an integral structure with the center circle, and the limiting insertion column is provided with six.

[0010] Preferably, one end surface of the extension circle plate is provided with a bevel opening, and the bevel opening is an integral structure with the extension circle plate.

[0011] Preferably, the inner wall of the first end cover is provided with a first embedded groove, the lower end of the first embedded groove is provided with a second embedded groove, and the lower end of the second embedded groove is provided with a third embedded groove.

[0012] Preferably, the inner wall of the first embedded groove is provided with a limiting insertion groove, and the limiting insertion groove is provided with six, and the limiting insertion column is inserted into the limiting insertion groove.

[0013] Preferably, one side of the piston rod sealing ring is provided with a buffer sealing ring, one side of the buffer sealing ring is provided with a second guide support ring, one end of the first end cover is provided with an extension seat, and the inside of the extension seat is provided with a dustproof ring.

[0014] Preferably, one end of the piston rod is provided with a piston, the outer circle of the piston is inlaid with a piston sealing ring, and one side of the piston sealing ring is provided with a first guide support ring.

[0015] Preferably, the other end of the cylinder body is provided with a second connecting seat, one end of the second connecting seat is provided with a second end cover, one end of the second end cover is provided with a fixed ear seat, the surfaces of the second end cover and the first end cover are provided with an inlet and an outlet, and the second connecting seat and the second end cover are fixed through bolts, and the first end cover and the first connecting seat are fixed through bolts.

[0016] Compared with the prior art, the utility model has the advantages that:

[0017] 1、The utility model discloses a piston rod sealing ring is provided with the center circle in the inside, and both ends of the center circle are provided with the extension circle plate, and the outer wall of the center circle is provided with the limiting insertion column, and the piston rod sealing ring, buffer sealing ring and second guide support ring are installed corresponding with the first embedded groove, second embedded groove and third embedded groove respectively, when installing the piston rod sealing ring, because the piston rod sealing ring is the rubber material, is inserted into the first embedded groove inside through the way of pressing down extrusion, and the limiting insertion column is aligned with the limiting insertion groove, then inserts the limiting insertion column into the limiting insertion groove inside, and the extension circle plate is tightly attached to the first embedded groove opening outer wall, plays the limiting effect, avoids the position deviation of piston rod sealing ring rotation, prevents the phenomenon of falling, improves the overall sealing performance.

[0018] 2、The utility model discloses a bevel opening is set up on one end of the extension circle plate, and the bevel opening is convenient for the piston rod to move and does not cause the extrusion effect to the opening position, thereby preventing the bending damage of the extension circle plate and improving the moving stability. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the overall internal structure of this utility model;

[0021] Figure 3 This is a schematic diagram of the piston rod sealing ring structure of this utility model;

[0022] Figure 4 This is a schematic diagram of the cross-sectional structure of the inner wall of the first end cap of this utility model;

[0023] In the diagram: 1. Cylinder body; 2. First connecting seat; 3. Second connecting seat; 4. First end cap; 5. Extension seat; 6. Second end cap; 7. Piston rod; 8. Fixed lug; 9. Inlet / outlet; 10. Piston; 11. Piston sealing ring; 12. First guide support ring; 13. Dustproof ring; 14. Piston rod sealing ring; 15. Buffer sealing ring; 16. Second guide support ring; 17. Center ring; 18. Extension ring plate; 19. Angled opening; 20. Limiting insert; 21. First inner groove; 22. Second inner groove; 23. Third inner groove; 24. Limiting slot. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0025] Please see Figures 1-4 An embodiment of the present invention is provided: a hydraulic cylinder with a sealing and protection mechanism, comprising: a cylinder body 1, a first connecting seat 2 provided at one end of the cylinder body 1, a piston rod 7 provided inside the cylinder body 1, a first end cover 4 provided at one end of the first connecting seat 2, and a piston rod sealing ring 14 provided inside the first end cover 4.

[0026] Also includes:

[0027] The center ring 17 is located inside the piston rod sealing ring 14. Both the upper and lower surfaces of the center ring 17 are provided with extension ring plates 18, and the extension ring plates 18 and the center ring 17 are integral structures.

[0028] The limiting pins 20 are set on the outer wall of the central ring 17, and the limiting pins 20 and the central ring 17 are an integral structure. There are six limiting pins 20.

[0029] Since the piston rod sealing ring 14 is made of rubber, it is inserted into the first embedded groove 21 by pressing, and the limiting plug 20 is aligned with the limiting slot 24, then the limiting plug 20 is inserted into the limiting slot 24, which has a limiting effect, avoids the position deviation of the piston rod sealing ring 14 caused by rotation, thereby preventing the phenomenon of falling off, and improving the overall sealing performance.

[0030] Please refer to Figure 3 , the end surface of the extension ring plate 18 is provided with a bevel opening 19, and the bevel opening 19 and the extension ring plate 18 are an integral structure, which facilitates the movement of the piston rod 7 without causing extrusion effect on the opening position, thereby preventing the bending damage of the extension ring plate 18 and improving the movement stability.

[0031] Please refer to Figure 1 、 4 , the inner wall of the first end cover 4 is provided with a first embedded groove 21, the lower end of the first embedded groove 21 is provided with a second embedded groove 22, the lower end of the second embedded groove 22 is provided with a third embedded groove 23, and the piston rod sealing ring 14, the buffer sealing ring 15 and the second guide support ring 16 are respectively installed corresponding to the first embedded groove 21, the second embedded groove 22 and the third embedded groove 23.

[0032] Please refer to Figure 3 、 4 , the inner wall of the first embedded groove 21 is provided with a limiting slot 24, and the limiting slot 24 is provided with six limiting slots 24, the limiting plug 20 is inserted into the limiting slot 24, the limiting plug 20 is aligned with the limiting slot 24, then the limiting plug 20 is inserted into the limiting slot 24, which has a limiting effect, avoids the position deviation of the piston rod sealing ring 14 caused by rotation, thereby preventing the phenomenon of falling off, and improving the overall sealing performance.

[0033] Please refer to Figure 2 , one side of the piston rod sealing ring 14 is provided with a buffer sealing ring 15, one side of the buffer sealing ring 15 is provided with a second guide support ring 16, one end of the first end cover 4 is provided with an extension seat 5, the inside of the extension seat 5 is provided with a dustproof ring 13, which has a dustproof effect.

[0034] Please refer to Figure 2 , one end of the piston rod 7 is provided with a piston 10, the outer ring of the piston 10 is embedded with a piston sealing ring 11, one side of the piston sealing ring 11 is provided with a first guide support ring 12, which improves the sealing performance of the piston 10.

[0035] Please refer to Figure 1 、 2The other end of the cylinder body 1 is provided with a second connecting seat 3, one end of the second connecting seat 3 is provided with a second end cover 6, one end of the second end cover 6 is provided with a fixed lug seat 8, one side surface of the second end cover 6 and the first end cover 4 is provided with an inlet and outlet 9, the second connecting seat 3 and the second end cover 6 are fixed through bolts, the first end cover 4 and the first connecting seat 2 are fixed through bolts, the piston rod 7 is moved through the inlet and outlet 9, the sealing effect is realized by the piston rod sealing ring 14 and the piston sealing ring 11 when moving, the moving guiding effect is realized by the first guiding support ring 12 and the second guiding support ring 16, and the moving stability is improved.

[0036] Working principle: when in use, the piston rod sealing ring 14, the buffer sealing ring 15 and the second guiding support ring 16 are sequentially installed in the first inner embedded groove 21, the second inner embedded groove 22 and the third inner embedded groove 23 inside the first end cover 4, the piston rod sealing ring 14, the buffer sealing ring 15 and the second guiding support ring 16 are respectively installed in correspondence with the first inner embedded groove 21, the second inner embedded groove 22 and the third inner embedded groove 23, when installing the piston rod sealing ring 14, since the piston rod sealing ring 14 is made of rubber, it is inserted into the first inner embedded groove 21 through the way of pressing down and extruding, the limiting insertion column 20 is aligned with the limiting insertion groove 24, then the limiting insertion column 20 is inserted into the limiting insertion groove 24, and the extension ring plate 18 is tightly attached to the opening outer wall of the first inner embedded groove 21, the limiting effect is realized, the position deviation of the piston rod sealing ring 14 is avoided, the phenomenon of falling off is prevented, the overall sealing performance is improved, the piston rod 7 is moved through the inlet and outlet 9, the sealing effect is realized by the piston rod sealing ring 14 and the piston sealing ring 11 when moving, the moving guiding effect is realized by the first guiding support ring 12 and the second guiding support ring 16, and the moving stability is improved.

[0037] It is obvious for those skilled in the art that the utility model is not limited to the details of the above-mentioned exemplary embodiments, and the utility model can be realized in other specific forms without departing from the spirit or basic characteristics of the utility model. Therefore, no matter from which point, the embodiments should be regarded as exemplary and non-limiting, the scope of the utility model is defined by the appended claims instead of the above description, and therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the utility model. Any figure mark in the claims should not be regarded as limiting the involved claims.

Claims

1. A hydraulic cylinder with a sealing and protection mechanism, comprising a cylinder body (1), a first connecting seat (2) provided at one end of the cylinder body (1), a piston rod (7) provided inside the cylinder body (1), a first end cap (4) provided at one end of the first connecting seat (2), and a piston rod sealing ring (14) provided inside the first end cap (4); Its features are: Also includes: A central ring (17) is disposed inside the piston rod sealing ring (14). Both the upper and lower surfaces of the central ring (17) are provided with extension ring plates (18), and the extension ring plates (18) and the central ring (17) are integral structures. The limiting pins (20) are disposed on the outer wall of the central ring (17), and the limiting pins (20) and the central ring (17) are an integral structure. There are six limiting pins (20).

2. A hydraulic cylinder with a sealing and protection mechanism according to claim 1, characterized in that: One end surface of the extension ring plate (18) is provided with a beveled opening (19), and the beveled opening (19) and the extension ring plate (18) are an integral structure.

3. A hydraulic cylinder with a sealing and protection mechanism according to claim 1, characterized in that: The inner wall of the first end cap (4) is provided with a first inner groove (21), the lower end of the first inner groove (21) is provided with a second inner groove (22), and the lower end of the second inner groove (22) is provided with a third inner groove (23).

4. A hydraulic cylinder with a sealing and protection mechanism according to claim 3, characterized in that: The inner wall of the first embedded groove (21) is provided with a limiting slot (24), and there are six limiting slots (24). The limiting post (20) is inserted into the limiting slot (24).

5. A hydraulic cylinder with a sealing and protection mechanism according to claim 1, characterized in that: A buffer seal ring (15) is provided on one side of the piston rod seal ring (14), and a second guide support ring (16) is provided on one side of the buffer seal ring (15). An extension seat (5) is provided at one end of the first end cap (4), and a dustproof ring (13) is provided inside the extension seat (5).

6. A hydraulic cylinder with a sealing and protective mechanism according to claim 1, characterized in that: A piston (10) is provided at one end of the piston rod (7), and a piston sealing ring (11) is embedded inside the outer ring of the piston (10). A first guide support ring (12) is provided on one side of the piston sealing ring (11).

7. A hydraulic cylinder with a sealing and protective mechanism according to claim 1, characterized in that: The other end of the cylinder (1) is provided with a second connecting seat (3), one end of the second connecting seat (3) is provided with a second end cap (6), one end of the second end cap (6) is provided with a fixing lug (8), and one side surface of the second end cap (6) and the first end cap (4) are provided with inlet and outlet (9). The second connecting seat (3) and the second end cap (6) are fixed together with the first end cap (4) and the first connecting seat (2) by bolts.

Images