Leakage-proof mechanism of hydraulic oil cylinder

Abstract

The utility model discloses a hydraulic oil cylinder leakproof mechanism which comprises a cylinder cover, a connector is connected to one end of the cylinder cover in a threaded and inserted mode, an inner sealing ring adheres to one end of the connector, a pressing ring is fixedly connected to the outer wall of the connector, an outer sealing ring is arranged between the pressing ring and the cylinder cover, and a sealing sleeve is connected to the outer side of the pressing ring in a sleeved mode. The outer side of the sealing sleeve is sleeved with a fixing cover, the two ends of the fixing cover are fixedly connected with fixing blocks, one end of each fixing block is in threaded insertion connection with a fixing bolt, one end of each fixing bolt penetrates through the sealing sleeve to be in threaded insertion connection with the cylinder cover, and a transparent cover adheres to the outer wall of one side of the cylinder cover. Primary sealing is carried out between the connector and the cylinder cover through the inner sealing ring, then secondary sealing is carried out between the connector and the cylinder cover through the outer sealing ring, and third-time sealing is carried out between the connector and the cylinder cover through the sealing sleeve, so that leakage of hydraulic oil is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic cylinders, in particular to a leakage prevention mechanism for hydraulic cylinders. Background Art

[0002] A hydraulic cylinder generally consists of structural components such as a cylinder barrel, cylinder heads, a hydraulic rod, and a piston. There are two cylinder heads, and the oil pipes are connected through connectors for the input and output of hydraulic oil in the cylinder barrel.

[0003] Currently, during the use of existing hydraulic cylinders, due to too few sealing structures on the connectors installed on the cylinder heads, the sealing performance during the use of the hydraulic cylinders is not good, resulting in a potential leakage between the connectors and the cylinder heads. Therefore, for the progress of the industry technology, to better ensure the normal use of hydraulic cylinders and improve the core technology competitiveness, this application proposes a new implementation scheme different from the connection structure between the cylinder head and the connector in the existing hydraulic cylinders. Summary of the Utility Model

[0004] The purpose of the utility model is to solve the problem of poor sealing performance during the use of existing hydraulic cylinders, and to propose a leakage prevention mechanism for hydraulic cylinders.

[0005] To achieve the above purpose, the utility model adopts the following technical scheme:

[0006] A leakage prevention mechanism for a hydraulic cylinder includes a cylinder head. One end of the cylinder head is threadedly inserted with a connector. An inner sealing ring is bonded to one end of the connector. A pressing ring is fixedly connected to the outer wall of the connector. An outer sealing ring is provided between the pressing ring and the cylinder head. A sealing sleeve is sleeved on the outside of the pressing ring, and a fixing cover is sleeved on the outside of the sealing sleeve.

[0007] Further, both ends of the fixing cover are fixedly connected with fixing blocks. One end of the fixing block is threadedly inserted with a fixing bolt. One end of the fixing bolt passes through the sealing sleeve and is threadedly inserted with the cylinder head.

[0008] Further, a transparent cover is bonded to the outer wall of one side of the cylinder head. The transparent cover covers the outside of the pressing ring, the outer sealing ring, the fixing cover, and the sealing sleeve.

[0009] Further, a plurality of positioning rods are fixed to the inner wall of one side of the transparent cover. A plurality of positioning holes are provided on one side of the cylinder head. The positioning rods are inserted into the positioning holes.

[0010] Further, a connecting inner cylinder is fixedly connected to the bottom of the cylinder head. A sealing ring is provided at the bottom end of the connecting inner cylinder.

[0011] Further, a sealing gasket is provided at the bottom of the cylinder head.

[0012] The beneficial effects of the utility model are as follows:

[0013] 1. A primary seal is performed between the connector and the cylinder head through the inner sealing ring. Then, a secondary seal is performed between the connector and the cylinder head through the outer sealing ring. Next, a tertiary seal is performed between the connector and the cylinder head through the sealing sleeve, thereby preventing the leakage of hydraulic oil.

[0014] 2. The compression ring, outer sealing ring, fixed cover, and sealing sleeve are protected by the transparent cover, thereby reducing damage to the outer sealing ring and the sealing sleeve, so as not to affect the usability of the outer sealing ring and the sealing sleeve.

[0015] 3. A double seal is performed between the cylinder head and the cylinder barrel through the sealing ring and the gasket, thereby avoiding the leakage of hydraulic oil. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 FIG. is a three-dimensional structural schematic diagram of a hydraulic cylinder anti-leakage mechanism proposed by the present utility model;

[0017] Figure 2 FIG. is a sectional structural schematic diagram of a hydraulic cylinder anti-leakage mechanism proposed by the present utility model;

[0018] Figure 3 FIG. is an exploded three-dimensional structural schematic diagram of a hydraulic cylinder anti-leakage mechanism proposed by the present utility model;

[0019] Figure 4 FIG. is an installation and use structural schematic diagram of a hydraulic cylinder anti-leakage mechanism proposed by the present utility model.

[0020] In the figure: 1, cylinder head; 2, connector; 3, inner sealing ring; 4, compression ring; 5, outer sealing ring; 6, fixed cover; 7, sealing sleeve; 8, fixed block; 9, transparent cover; 10, positioning rod; 11, positioning hole; 12, connecting inner cylinder; 13, sealing ring; 14, gasket. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments.

[0022] Refer to Figures 1-4, a hydraulic cylinder anti-leakage mechanism, including a cylinder head 1. One end of the cylinder head 1 is threadedly inserted with a connector 2. One end of the connector 2 is bonded with an inner sealing ring 3. A pressing ring 4 is welded on the outer wall of the connector 2. An outer sealing ring 5 is arranged between the pressing ring 4 and the cylinder head 1. A sealing sleeve 7 is sleeved on the outside of the pressing ring 4. The inner sealing ring 3 is used for primary sealing between the connector 2 and the cylinder head 1. Then, the outer sealing ring 5 is used for secondary sealing between the connector 2 and the cylinder head 1. Next, the sealing sleeve 7 is used for tertiary sealing between the connector 2 and the cylinder head 1, thereby preventing the leakage of hydraulic oil. A fixing cover 6 is sleeved on the outside of the sealing sleeve 7.

[0023] Fixing blocks 8 are integrally formed at both ends of the fixing cover 6. One end of the fixing block 8 is threadedly inserted with a fixing bolt. One end of the fixing bolt passes through the sealing sleeve 7 and is threadedly inserted with the cylinder head 1. A transparent cover 9 is bonded to the outer wall of one side of the cylinder head 1. The transparent cover 9 covers the outside of the pressing ring 4, the outer sealing ring 5, the fixing cover 6 and the sealing sleeve 7. The pressing ring 4, the outer sealing ring 5, the fixing cover 6 and the sealing sleeve 7 are protected by the transparent cover 9, thereby reducing damage to the outer sealing ring 5 and the sealing sleeve 7. A plurality of positioning rods 10 are fixed to the inner wall of one side of the transparent cover 9. A plurality of positioning holes 11 are arranged on one side of the cylinder head 1. The positioning rods 10 are inserted into the positioning holes 11, thereby facilitating the positioning and installation of the cylinder head 1 on the cylinder head 1. A connecting inner cylinder 12 is integrally formed at the bottom of the cylinder head 1. A sealing ring 13 is arranged at the bottom end of the connecting inner cylinder 12. A sealing gasket 14 is arranged at the bottom of the cylinder head 1. Double sealing between the cylinder head 1 and the cylinder barrel is carried out through the sealing ring 13 and the sealing gasket 14.

[0024] The working principle of this embodiment: When in use, the inner sealing ring 3 is used for primary sealing between the connector 2 and the cylinder head 1. Then, the outer sealing ring 5 is used for secondary sealing between the connector 2 and the cylinder head 1. Next, the sealing sleeve 7 is used for tertiary sealing between the connector 2 and the cylinder head 1. Then, the pressing ring 4, the outer sealing ring 5, the fixing cover 6 and the sealing sleeve 7 are protected by the transparent cover 9. Next, double sealing between the cylinder head 1 and the cylinder barrel is carried out through the sealing ring 13 and the sealing gasket 14.

[0025] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and the inventive concept of the present invention, makes equivalent replacements or changes, and all should be covered within the protection scope of the present invention.

Claims

1. A hydraulic cylinder anti-leakage mechanism, comprising a cylinder cover (1), characterized in that: A connector (2) is threadedly inserted at one end of the cylinder head (1), an inner sealing ring (3) is bonded to one end of the connector (2), a clamping ring (4) is fixedly connected to the outer wall of the connector (2), an outer sealing ring (5) is provided between the clamping ring (4) and the cylinder head (1), a sealing sleeve (7) is sleeved on the outer side of the clamping ring (4), and a fixing cover (6) is sleeved on the outer side of the sealing sleeve (7).

2. A hydraulic cylinder anti-leakage mechanism according to claim 1, characterized in that: Both ends of the fixed cover (6) are fixedly connected to a fixed block (8), one end of the fixed block (8) is threadedly plugged with a fixing bolt, and one end of the fixing bolt passes through the sealing sleeve (7) and is threadedly plugged with the cylinder cover (1).

3. The anti-leakage mechanism for a hydraulic cylinder according to claim 1, characterized in that: A transparent cover (9) is bonded to the outer wall of one side of the cylinder cover (1), and the transparent cover (9) covers the outer sides of the clamping ring (4), the outer sealing ring (5), the fixing cover (6) and the sealing sleeve (7).

4. A hydraulic cylinder anti-leakage mechanism according to claim 3, characterized in that: A plurality of positioning rods (10) are fixed to an inner wall of one side of the transparent cover (9), and a plurality of positioning holes (11) are provided on one side of the cylinder cover (1), and the positioning rods (10) are plugged into the positioning holes (11).

5. The anti-leakage mechanism for a hydraulic cylinder according to claim 1, characterized in that: The bottom of the cylinder cover (1) is fixedly connected to a connecting inner cylinder (12), and a sealing ring (13) is provided at the bottom end of the connecting inner cylinder (12).

6. The anti-leakage mechanism for a hydraulic cylinder according to claim 1, characterized in that: A sealing gasket (14) is provided at the bottom of the cylinder cover (1).

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