A high-efficiency hydraulic swing cylinder for testing experiments

Abstract

This utility model discloses a high-efficiency hydraulic swing cylinder for testing experiments, including a cylinder body. A swing shaft is provided on the inner surface of the cylinder body, and hydraulic oil chambers are provided on the inner surface of the cylinder body, distributed on the upper and lower inner surfaces. An interface is provided on the inner surface of each hydraulic oil chamber, communicating with the hydraulic oil chambers. The interface has a concave structure. A positioning groove is provided on the inner surface of the outer end of the interface of the cylinder body. A first sealing gasket and a second sealing gasket are inserted into the positioning groove at the interface of the cylinder body. The surface of the first sealing gasket has a first annular groove, and the surface of the second sealing gasket has a second annular groove. By providing a sealing structure within the interface of the hydraulic oil chamber, the sealing structure adopts a double-layer sealing gasket structure with an internal annular groove structure. After the oil pipe is installed, the sealing gasket can be squeezed at the joint to lock the seal, improving sealing performance.

Description

Technical Field

[0001] The utility model relates to the field of high-efficiency hydraulic swing cylinders for detection experiments, and more specifically, to a high-efficiency hydraulic swing cylinder for detection experiments. Background Art

[0002] The swing hydraulic cylinder is a tightly assembled accessory. It uses hydraulic pressure to gather very high torque in a small space. It uses a combined spiral gear structure inside. The entire swing hydraulic cylinder can produce a large torque in a small space. Although the power is high, they can still be accurately and easily controlled. Swing hydraulic cylinders have been successfully used in almost all fields that require limited rotational motion and high torque;

[0003] In its existing use, in the hydraulic swing cylinder used for testing experiments, the swing cylinder can be classified according to the working principle into gear rack type, vane type and spiral type. Among them, the vane type swing hydraulic cylinder is widely used in industrial production and robot joint design due to its small moment of inertia, sensitive action, uniform rotation, small pulsation, and low processing difficulty. However, the general traditional vane type hydraulic cylinder has a more obvious disadvantage, its leakage is more obvious, the sealing effect is poor, and when the traditional hydraulic swing cylinder is added with a servo mechanism, the hydraulic swing cylinder and the servo valve are often connected through an oil pipe, which makes the oil circuit of the hydraulic system complicated and cumbersome, and the oil pipe transportation also causes a certain hydraulic loss;

[0004] Its authorization announcement number CN105952707A discloses an integrated servo hydraulic swing cylinder with multiple sealing effects, including a hydraulic swing cylinder, a valve guide and a servo valve, wherein the hydraulic swing cylinder includes a working shaft, a cylinder barrel, moving blades, stationary blades, a cylinder head, a bearing, a bearing end cover, and a cylinder head sealing gland, and the working shaft and the cylinder barrel are respectively fixed with moving blades and stationary blades by threaded connection; a valve guide is arranged outside the hydraulic swing cylinder body, and is connected to the hydraulic swing cylinder body by bolts, and the valve guide is connected to the servo valve, and the hydraulic swing cylinder also includes a triple dynamic sealing structure and a double static sealing structure. The hydraulic swing cylinder has a simple structure and good sealing effect, which makes up for the disadvantage of insufficient volumetric efficiency of the traditional swing cylinder, reduces the pressure loss of the oil pipe to a certain extent, and improves the efficiency of the hydraulic swing cylinder;

[0005] In the above patent, the sealing structure at the interface is complex, the sealing is poor, and it is inconvenient to seal the oil inlet interface during sealing. Utility Model Content

[0006] In view of the problems existing in the prior art, the purpose of the utility model is to provide a high-efficiency hydraulic swing cylinder for detection experiments. A sealing structure is arranged in the interface at the hydraulic oil chamber. The sealing structure adopts a double-layer sealing gasket structure with a built-in ring groove structure. After the oil pipe is installed, the sealing gasket can be squeezed at the joint to lock the seal and improve the sealing performance.

[0007] To solve the above problems, the utility model adopts the following technical solutions.

[0008] The cam is provided with a plurality of camshafts, each of which is provided with a plurality of camshafts, each of which is provided with a plurality of camshafts, each of which is provided with a plurality of camshafts.

[0009] Furthermore, the outer end surfaces of the first sealing gasket and the second sealing gasket are provided with outer ring protrusions, and the outer ring protrusions are snapped into the inner side surfaces of the positioning grooves at the interfaces.

[0010] Furthermore, an inner ring groove is provided on the inner surface of the positioning groove of the cylinder body, and the outer ring protrusion surfaces of the first sealing gasket and the second sealing gasket are clamped into the inner surface of the inner ring groove.

[0011] Furthermore, the first sealing pad and the second sealing pad are made of rubber pad material.

[0012] Furthermore, the thickness of the first sealing gasket and the second sealing gasket is not less than three millimeters.

[0013] Furthermore, the upper surface of the second sealing pad is provided with anti-slip grooves.

[0014] Furthermore, the anti-slip grooves are strip-shaped grooves, which are evenly and densely distributed on the upper surface of the second sealing gasket.

[0015] Compared with the prior art, the advantages of the present invention are:

[0016] (1) A sealing structure is provided in the interface of the hydraulic oil chamber. The sealing structure adopts a double-layer sealing gasket structure with a built-in ring groove structure. After the oil pipe is installed, the sealing gasket can be squeezed at the joint to lock the seal and improve the sealing performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 It is a cross-sectional view of the overall structure of the utility model;

[0019] Figure 3 It is an enlarged view of point A of the utility model;

[0020] Figure 4 It is a top view of the first sealing gasket of the utility model;

[0021] Figure 5 It is a top view of the second sealing gasket of the utility model.

[0022] Description of the numbers in the figure:

[0023] 1 cylinder body, 2 swing shaft, 3 hydraulic oil chamber, 4 interface, 5 first sealing pad, 6 second density pad, 7 first ring groove, 8 second ring groove, 9 outer ring protrusion, 10 inner ring groove, 60 anti-skid groove. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. Example

[0025] See also Figure 1-5A high-efficiency hydraulic swing cylinder for testing experiments includes a cylinder body 1, a swing shaft 2 is arranged on the inner surface of the cylinder body 1, a hydraulic oil chamber 3 is arranged on the inner surface of the upper end and the inner surface of the lower end of the cylinder body 1, an interface 4 is arranged on the inner surface of the hydraulic oil chamber 3 of the cylinder body 1, the interface 4 and the hydraulic oil chamber 3 are interconnected, the interface 4 adopts an inner concave structure, and a threaded mounting groove is arranged on the inner side of the interface 4, a positioning groove is arranged on the inner surface of the outer end of the interface 4 of the cylinder body 1, and the interface 4 of the cylinder body 1 is positioned The first sealing gasket 5 and the second sealing gasket 6 are inserted into the groove, the surface of the first sealing gasket 5 is provided with a first ring groove 7, the surface of the second sealing gasket 6 is provided with a second ring groove 8, the first sealing gasket 5 and the second sealing gasket 6 are pressed against each other, and the first ring groove 7 and the second ring groove 8 adopt a water drop-shaped ring groove structure; by arranging a sealing structure in the interface at the hydraulic oil chamber, the sealing structure adopts a double-layer sealing gasket structure, and the built-in ring groove structure, after the oil pipe is installed, the sealing gasket can be squeezed at the joint, the seal can be locked, and the sealing performance is improved;

[0026] The outer end surfaces of the first sealing gasket 5 and the second sealing gasket 6 are provided with an outer ring protrusion 9, which is inserted into the inner surface of the positioning groove at the interface 4; when the first sealing gasket 5 and the second sealing gasket 6 are inserted and installed, the outer ring protrusion 9 can be inserted into the position, and the inner surface of the positioning groove of the cylinder body 1 is provided with an inner ring groove 10, and the outer ring protrusion 9 of the first sealing gasket 5 and the second sealing gasket 6 is inserted into the inner surface of the inner ring groove 10; the position can be stably inserted and will not slip off;

[0027] The first sealing pad 5 and the second sealing pad 6 are made of rubber pad material. The thickness of the first sealing pad 5 and the second sealing pad 6 is not less than three millimeters. After the hydraulic oil pipe joint is locked and fixed, it can be squeezed on the surface of the sealing pad, which improves the sealing performance and can be locked and fixed without loosening or slipping.

[0028] The upper surface of the second sealing pad 6 is provided with anti-skid grooves 60, which are strip-shaped grooves and are evenly and densely arranged on the upper surface of the second sealing pad 6. After the joint of the hydraulic oil pipe is locked, the friction force can be increased, and the firmness can be improved;

[0029] When in use, the inner surface of the cylinder body 1 is provided with a hydraulic oil chamber 3, and the hydraulic oil chambers 3 are distributed on the inner surface of the upper end and the inner surface of the lower end of the cylinder body 1. The inner surface of the hydraulic oil chamber 3 of the cylinder body 1 is provided with an interface 4, and the interface 4 is interconnected with the hydraulic oil chamber 3. The interface 4 adopts an inner recess structure, and a threaded mounting groove is provided on the inner side of the interface 4. The joint of the hydraulic oil pipe can be twisted and installed in the threaded mounting groove. The first sealing gasket 5 and the second sealing gasket 6 are inserted into the positioning groove of the interface 4 of the cylinder body 1. The surface of the first sealing gasket 5 is provided with a first ring groove 7, and the second ring groove 8 is provided with a first ring groove 9. A second annular groove 8 is provided on the surface of the second sealing gasket 6, and the first sealing gasket 5 and the second sealing gasket 6 are pressed against each other, and the first annular groove 7 and the second annular groove 8 adopt a water drop-shaped annular groove structure; after being locked, the joint of the hydraulic oil pipe can be squeezed and compressed at the sealing gasket, and the compression slips, and the annular groove in the water drop state can be squeezed and compressed, and the inner end of the sealing gasket can be compressed and squeezed toward the inner end, and can be squeezed at the joint of the hydraulic oil pipe to seal, thereby improving the sealing performance, and will not leak, and will not leak when the oil pressure is high. The sealing performance is strong, there is no leakage, and it does not affect the oil pressure, and it is highly efficient when used.

[0030] The above is only a preferred specific implementation of the utility model; however, the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solution and improved ideas of the utility model within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model.

Claims

1. A high-efficiency hydraulic swing cylinder for testing experiments, comprising a cylinder body (1), characterized in that: The inner surface of the cylinder body (1) is provided with a swing shaft (2), and the inner surface of the cylinder body (1) is provided with a hydraulic oil chamber (3). The hydraulic oil chamber (3) is distributed on the inner surface of the upper end and the inner surface of the lower end of the cylinder body (1). The inner surface of the hydraulic oil chamber (3) of the cylinder body (1) is provided with an interface (4), and the interface (4) and the hydraulic oil chamber (3) are mutually communicated. The interface (4) adopts an inner concave structure, and a threaded installation groove is provided on the inner side of the interface (4). A positioning groove is provided on the inner surface of the outer end of the interface (4) of the cylinder body (1). A first sealing gasket (5) and a second sealing gasket (6) are inserted into the positioning groove at the interface (4) of the cylinder body (1). A first ring groove (7) is provided on the surface of the first sealing gasket (5), and a second ring groove (8) is provided on the surface of the second sealing gasket (6). The first sealing gasket (5) and the second sealing gasket (6) are pressed against each other, and the first ring groove (7) and the second ring groove (8) adopt a water drop-shaped ring groove structure.

2. The high-efficiency hydraulic swing cylinder for detection experiment according to claim 1 is characterized in that: The outer end surfaces of the first sealing gasket (5) and the second sealing gasket (6) are provided with outer ring protrusions (9), and the outer ring protrusions (9) are snapped into the inner side surface of the positioning groove at the interface (4).

3. The high-efficiency hydraulic swing cylinder for detection experiment according to claim 2 is characterized in that: An inner ring clamping groove (10) is provided on the inner side surface of the positioning groove of the cylinder body (1), and the outer ring protrusions (9) of the first sealing gasket (5) and the second sealing gasket (6) are clamped into the inner side surface of the inner ring clamping groove (10).

4. The high-efficiency hydraulic swing cylinder for detection experiment according to claim 1 is characterized in that: The first sealing pad (5) and the second sealing pad (6) are made of rubber pad material.

5. The high-efficiency hydraulic swing cylinder for detection experiment according to claim 1 is characterized in that: The thickness of the first sealing gasket (5) and the second sealing gasket (6) is not less than three millimeters.

6. The high-efficiency hydraulic swing cylinder for detection experiment according to claim 1 is characterized in that: The upper surface of the second sealing pad (6) is provided with anti-slip grooves (60).

7. The high-efficiency hydraulic swing cylinder for detection experiment according to claim 6 is characterized in that: The anti-slip grooves (60) are in the form of strip-shaped grooves, which are evenly and densely distributed on the upper surface of the second sealing pad (6).

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