Leak-proof device for hydraulic oil cylinder

Abstract

The utility model discloses a leakproof device for a hydraulic oil cylinder, which belongs to the technical field of hydraulic oil cylinders and comprises a connecting cover, an oil delivery pipe and the hydraulic oil cylinder, the connecting cover is sleeved on the outer side of the oil delivery pipe, and a threaded sleeve is rotatably mounted on the side wall of the connecting cover and rotatably mounted on the outer side of an oil filling port of the hydraulic oil cylinder. According to the device, the protective cover and the connecting plate are arranged on the outer side of the oil conveying pipe, after the protective cover and the connecting plate are assembled together, the connecting position of the oil filling port of the hydraulic oil cylinder and the oil conveying pipe can be shielded, and therefore the oil filling port of the hydraulic oil cylinder and the oil conveying pipe can be prevented from being blocked; in addition, a protective sleeve is arranged on the outer side of the oil conveying pipe, the oil conveying pipe can be protected through the protective sleeve, abrasion of the oil conveying pipe is avoided, and leakage of the oil conveying pipe is prevented.

Description

Technical Field

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

[0002] The hydraulic cylinder is a hydraulic actuator that converts hydraulic energy into mechanical energy and performs linear reciprocating motion. It has a simple structure and reliable operation. It uses a pump to send high-pressure liquid into the cylinder, and then the pressure of the liquid pushes the piston to move, thereby generating huge thrust.

[0003] However, the connection between the existing hydraulic cylinder oil filling port and the oil pipe is not equipped with a protective structure and is exposed to the outside. During use, if an external impact occurs, the oil pipe may be easily disconnected or damaged, and oil leakage may occur. Utility Model Content

[0004] The purpose of the utility model is to provide a leakage prevention device for a hydraulic cylinder, so as to solve the problem proposed in the above background technology that the connection between the existing hydraulic cylinder oil filling port and the oil pipe is not equipped with a protective structure and is exposed to the outside. During use, if an external impact occurs, it is easy to cause the oil pipe to be disconnected or damaged, and oil leakage is likely to occur.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solution: a leakage prevention device for a hydraulic cylinder, comprising a connecting cover, an oil delivery pipe, and a hydraulic cylinder, wherein the outer side of the oil delivery pipe is sleeved with a connecting cover, a threaded sleeve is rotatably mounted on the side wall of the connecting cover, and the threaded sleeve is rotatably mounted on the outer side of the oil filling port of the hydraulic cylinder;

[0006] A protective cover is installed on the outer side of the hydraulic cylinder oil filling port, a positioning groove is opened on the side wall of the protective cover, one end of the telescopic rod is installed on the side wall of the connecting cover, the other end of the telescopic rod is installed on the connecting plate, and a positioning rod is installed on the side wall of the connecting plate, and the positioning rod can be inserted into the positioning groove;

[0007] A sealing ring is fitted on the side wall of the threaded sleeve, and the sealing ring can fit with the side wall of the oil filling port of the hydraulic cylinder.

[0008] As a preferred embodiment of the present invention, a plug is installed at the end of the oil pipe, and the plug can be inserted into the oil filling port of the hydraulic cylinder. A rubber ring is sleeved on the outer side of the plug, and the rubber ring can fit with the side wall of the oil filling port of the hydraulic cylinder.

[0009] As a preferred embodiment of the present invention, the side wall of the connecting cover is installed with a convex ring, the threaded sleeve includes a cylinder, an annular groove and a top ring, the side wall of the cylinder is installed with a top ring, the side wall of the top ring is provided with an annular groove, the convex ring can be inserted and installed in the annular groove, and the top ring can fit with the side wall of the plug.

[0010] As a preferred embodiment of the present invention, the outer side of the oil pipeline is sleeved with a protective sleeve, and the protective sleeve includes an outer layer, an inner layer and a steel belt layer. The inner layer is sleeved on the outer side of the oil pipeline, a steel belt layer is provided on the outer side of the inner layer, and the outer side of the steel belt layer is sleeved with the outer layer.

[0011] As a preferred embodiment of the present invention, a pull rod is installed on the side wall of the connecting plate, a groove is opened on the outer side of the positioning rod, an anti-slip sleeve is sleeved in the groove, and the anti-slip sleeve can fit with the inner wall of the positioning groove.

[0012] As a preferred embodiment of the present invention, an arc-shaped plate is fitted on the inner side wall of the connecting cover, and the arc-shaped plate fits on the side wall of the oil pipeline.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] This device sets a protective cover and a connecting plate on the outside of the oil pipeline. When the two are assembled together, they can shield the connection between the hydraulic cylinder oil filling port and the oil pipeline, protecting the connection and preventing the oil pipeline from being disconnected or damaged due to external impact, thereby avoiding leakage.

[0015] In addition, the device also provides a protective cover on the outside of the oil pipeline, which can protect the oil pipeline from wear and tear and prevent the oil pipeline from leaking. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the structure of this patent;

[0017] Figure 2 This is a schematic diagram of the cross-sectional structure of the connection cover of this patent;

[0018] Figure 3 for Figure 1 Schematic diagram of the structure at point A in the middle.

[0019] In the figure: 1 connecting cover, 2 oil pipeline, 3 hydraulic cylinder, 4 threaded sleeve, 5 protective cover, 6 positioning groove, 7 telescopic rod, 8 connecting plate, 9 positioning rod, 10 sealing ring, 11 plug, 12 rubber ring, 13 convex ring, 14 protective cover, 15 pull rod, 16 groove, 17 anti-slip sleeve, 18 curved plate, 41 cylinder, 42 annular slide groove, 43 top ring, 141 outer layer, 142 inner layer, 143 steel belt layer. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] See also Figure 1-3 , the utility model provides a technical solution:

[0022] In this technical solution, a leakage prevention device for a hydraulic cylinder includes a connecting cover 1, an oil pipe 2 and a hydraulic cylinder 3. The outer side of the oil pipe 2 is sleeved with the connecting cover 1, and a threaded sleeve 4 is rotatably installed on the side wall of the connecting cover 1. The threaded sleeve 4 is rotatably installed on the outer side of the oil filling port of the hydraulic cylinder 3;

[0023] A protective cover 5 is installed on the outside of the oil filling port of the hydraulic cylinder 3. A positioning groove 6 is opened on the side wall of the protective cover 5. One end of a telescopic rod 7 is installed on the side wall of the connecting cover 1. A connecting plate 8 is installed on the other end of the telescopic rod 7. A positioning rod 9 is installed on the side wall of the connecting plate 8. The positioning rod 9 can be inserted into the positioning groove 6.

[0024] The side wall of the threaded sleeve 4 is fitted with a sealing ring 10, which can fit the side wall of the oil filling port of the hydraulic cylinder 3;

[0025] In this technical solution, the connecting cover 1 can protect the bend of the oil pipeline 2. At the same time, the protective cover 5 and the connecting plate 8 can shield and protect the connection between the oil filling port of the hydraulic cylinder 3 and the oil pipeline 2, thereby preventing the oil pipeline from being disconnected or damaged by the impact of the impact object in the event of a collision, thereby avoiding leakage.

[0026] The setting of the sealing ring 10 can improve the sealing between the threaded sleeve 4 and the oil filling port of the hydraulic cylinder 3, prevent external dust, rainwater, etc. from entering the threaded sleeve 4, prevent the threaded sleeve 4 from rusting, and avoid affecting the later disassembly of the oil pipeline 2. An external thread is provided on the outside of the oil filling port of the hydraulic cylinder 3, and the threaded sleeve 4 is installed on the outside of the oil filling port of the hydraulic cylinder 3 by rotating the thread.

[0027] In some technical solutions, a plug 11 is installed at the end of the oil pipe 2, and the plug 11 can be inserted into the oil filling port of the hydraulic cylinder 3. A rubber ring 12 is sleeved on the outside of the plug 11, and the rubber ring 12 can fit with the side wall of the oil filling port of the hydraulic cylinder 3.

[0028] In this technical solution, by providing the plug 11 and the rubber ring 12, the tightness of the connection between the oil pipe 2 and the oil filling port of the hydraulic cylinder 3 can be improved, thereby avoiding oil leakage at the connection between the two.

[0029] In some technical solutions, a convex ring 13 is installed on the side wall of the connecting cover 1, and the threaded sleeve 4 includes a cylinder 41, an annular groove 42 and a top ring 43. The side wall of the cylinder 41 is installed with a top ring 43, and the side wall of the top ring 43 is provided with an annular groove 42. The convex ring 13 can be inserted and installed in the annular groove 42, and the top ring 43 can fit with the side wall of the plug 11.

[0030] In this technical solution, by setting the top ring 43, when the threaded sleeve 4 is rotated, it can drive the plug 11 to move into the oil filling port of the hydraulic cylinder 3. After the threaded sleeve 4 is tightened, the plug 11 will be firmly inserted into the oil filling port of the hydraulic cylinder 3 to ensure the tightness of the connection between the two.

[0031] In some technical solutions, a protective sleeve 14 is sleeved on the outside of the oil pipeline 2. The protective sleeve 14 includes an outer layer 141, an inner layer 142 and a steel belt layer 143. The inner layer 142 is sleeved on the outside of the oil pipeline 2. The steel belt layer 143 is provided on the outside of the inner layer 142. The outer layer 141 is sleeved on the outside of the steel belt layer 143.

[0032] In this technical solution, the protective cover 14 can shield the outer wall of the oil pipeline 2, thereby preventing the oil pipeline 2 from excessive wear and tear, and avoiding damage to the oil pipeline 2 and oil leakage;

[0033] The steel belt layer 143 can improve the wear resistance of the protective sleeve 14 , thereby extending the service life of the protective sleeve 14 and improving the protection effect on the oil pipeline 2 .

[0034] In some technical solutions, a pull rod 15 is installed on the side wall of the connecting plate 8, a groove 16 is opened on the outside of the positioning rod 9, and an anti-slip sleeve 17 is sleeved in the groove 16, and the anti-slip sleeve 17 can fit with the inner wall of the positioning groove 6.

[0035] In some technical solutions, an arc-shaped plate 18 is fitted on the inner side wall of the connection cover 1 , and the arc-shaped plate 18 fits on the side wall of the oil pipeline 2 .

[0036] In this technical solution, the provision of the arc-shaped plate 18 can prevent the oil pipeline 2 from being excessively bent at its bends, thereby preventing the oil pipeline 2 from being damaged at its bends.

[0037] Working principle: First, install the oil pipe 2 at the oil filling port of the hydraulic cylinder 3 through the threaded sleeve 4 on the outside of the connecting cover 1. When the threaded sleeve 4 is rotated, the plug 11 will be inserted into the oil filling port of the hydraulic cylinder 3 under the drive of the top ring 43 and fit tightly with it. Then, the connecting plate 8 is installed on the protective cover 5 through the cooperation between the positioning rod 9 and the positioning groove 6, so that it blocks the oil pipe 2 and the oil filling port of the hydraulic cylinder 3 to prevent the oil pipe from being disconnected or damaged due to the impact of the impact object in the event of a collision, thereby avoiding leakage.

[0038] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0039] While the present invention has been described above with reference to exemplary embodiments, various modifications may be made and equivalent components may be substituted without departing from the scope of the present invention. In particular, as long as no structural conflicts exist, the various features of the disclosed embodiments may be combined with one another in any manner. The omission of an exhaustive description of these combinations in this specification is solely for the sake of space and resource conservation. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but encompasses all technical solutions within the scope of the claims.

Claims

1. A leakage prevention device for a hydraulic oil cylinder, comprising a connecting cover (1), an oil delivery pipe (2) and a hydraulic oil cylinder (3), characterized in that: The outer side of the oil delivery pipe (2) is sleeved with a connecting cover (1), a threaded sleeve (4) is rotatably mounted on the side wall of the connecting cover (1), and the threaded sleeve (4) is rotatably mounted on the outer side of the oil filling port of the hydraulic cylinder (3); A protective cover (5) is installed on the outer side of the oil filling port of the hydraulic oil cylinder (3), and a positioning groove (6) is opened on the side wall of the protective cover (5). One end of a telescopic rod (7) is installed on the side wall of the connecting cover (1), and a connecting plate (8) is installed on the other end of the telescopic rod (7). A positioning rod (9) is installed on the side wall of the connecting plate (8), and the positioning rod (9) can be inserted into the positioning groove (6); A sealing ring (10) is fitted on the side wall of the threaded sleeve (4), and the sealing ring (10) can fit on the side wall of the oil filling port of the hydraulic cylinder (3).

2. The anti-leakage device for a hydraulic cylinder according to claim 1, characterized in that: A plug (11) is installed at the end of the oil delivery pipe (2), and the plug (11) can be inserted into the oil filling port of the hydraulic cylinder (3). A rubber ring (12) is sleeved on the outer side of the plug (11), and the rubber ring (12) can fit with the side wall of the oil filling port of the hydraulic cylinder (3).

3. The anti-leakage device for a hydraulic cylinder according to claim 1, characterized in that: The side wall of the connecting cover (1) is provided with a convex ring (13), and the threaded sleeve (4) comprises a cylinder (41), an annular groove (42) and a top ring (43). The side wall of the cylinder (41) is provided with a top ring (43), and the side wall of the top ring (43) is provided with an annular groove (42). The convex ring (13) can be inserted and installed in the annular groove (42), and the top ring (43) can fit with the side wall of the plug (11).

4. The anti-leakage device for a hydraulic cylinder according to claim 1, characterized in that: The outer side of the oil pipeline (2) is sleeved with a protective sleeve (14), and the protective sleeve (14) comprises an outer layer (141), an inner layer (142), and a steel belt layer (143). The inner layer (142) is sleeved on the outer side of the oil pipeline (2), and the outer side of the inner layer (142) is provided with a steel belt layer (143). The outer side of the steel belt layer (143) is sleeved with the outer layer (141).

5. The anti-leakage device for a hydraulic cylinder according to claim 1, characterized in that: A pull rod (15) is installed on the side wall of the connecting plate (8), a groove (16) is provided on the outer side of the positioning rod (9), an anti-slip sleeve (17) is sleeved in the groove (16), and the anti-slip sleeve (17) can fit with the inner wall of the positioning groove (6).

6. The anti-leakage device for a hydraulic cylinder according to claim 1, characterized in that: An arc-shaped plate (18) is fitted onto the inner side wall of the connection cover (1).

7. The anti-leakage device for a hydraulic cylinder according to claim 6, characterized in that: The arc-shaped plate (18) is fitted with the side wall of the oil delivery pipe (2).

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