Sealing test device for rotary oil cylinder

Abstract

The utility model relates to a sealing test device for a rotary oil cylinder, and aims to provide equipment which is convenient to mount and dismount and can integrally test the sealing performance of the rotary oil cylinder, the device comprises a support plate, a connecting rod, a pressing plate, a positioning pin, a sealing screw, an oil tank and the like, and the connecting rod is mounted on the support plate; two ends of the connecting rod are respectively connected with the supporting plate and the pressing plate through screws; the positioning pin is installed in a pin hole in the supporting plate, a sealing ring is installed on the sealing screw, the rotating oil cylinder is arranged between the supporting plate and the pressing plate, an inner ring pin hole is matched with the positioning pin, a bearing and a rotating oil seal are arranged between the inner ring and the outer ring, and the rotating oil cylinder is connected with an oil tank through an oil supply port and an oil return port. According to the oil cylinder sealing performance testing device, the testing efficiency and accuracy are improved, the misjudgment risk is reduced, and the oil cylinder sealing performance testing device is suitable for sealing testing of oil cylinders of various specifications.

Description

Technical Field

[0001] The utility model relates to the field of machinery, in particular to a testing device. Background Art

[0002] Hydraulic products are widely used in the mechanical field. As one of the core components in hydraulic systems, the stability and reliability of the cylinder's performance are crucial to the safe operation of the entire system. The sealing performance of the cylinder is directly related to the operating efficiency and service life of the hydraulic system. Therefore, ensuring the reliability of the cylinder's sealing performance is a key step in the design and manufacturing of hydraulic products. Utility Model Content

[0003] In order to solve the above problems, the utility model discloses a rotary oil cylinder sealing test device.

[0004] The specific technical solutions are as follows:

[0005] A rotary oil cylinder sealing test device, wherein a support plate and a pressure plate are arranged above and below, and a connecting rod is connected to the support plate and the pressure plate above and below respectively, the connecting rod and the support plate are fixed by screws, and the connecting rod and the pressure plate are fixed by screws, the rotary oil cylinder is placed between the support plate and the pressure plate, the locating pin is installed in the pin hole of the support plate, the small hole of the inner ring of the rotary oil cylinder is assembled with the locating pin, and a sealing screw is also provided on the support plate, the sealing screw hole on the support plate is aligned with the oil hole of the inner ring of the rotary oil cylinder, and the sealing screw is connected to the support plate to seal the oil hole of the inner ring of the rotary oil cylinder; the outer circle of the inner ring of the rotary oil cylinder is also covered with a bearing, and a rotary oil seal is provided on one side of the bearing, and a rotary oil cylinder outer ring is provided on the outside of the rotary oil seal, and an end cover is provided at the end of the inner ring of the rotary oil cylinder, and the end cover is fitted with the pressure plate. The device also includes an oil tank, which is connected to the rotary oil cylinder.

[0006] A sealing cavity is provided in the outer ring of the rotating oil cylinder, and the sealing cavity is composed of a rotating oil seal, an inner ring of the rotating oil cylinder, and an outer ring of the rotating oil cylinder.

[0007] The rotary oil cylinder is provided with an oil inlet joint, which is connected to the oil supply port of the oil tank. The rotary oil cylinder is provided with an oil return joint, which is connected to the first oil return port. The rotary oil cylinder is also provided with an oil drain joint, which is connected to the second oil return port of the oil tank.

[0008] An oil inlet pipe is provided on the outer ring of the rotating oil cylinder, and the oil inlet pipe is connected to the oil inlet joint. An oil return pipe is also provided on the outer ring of the rotating oil cylinder, and the oil return pipe is connected to the oil return joint. An oil drain pipe is provided inside the outer ring of the rotating oil cylinder, and one end of the oil drain pipe is connected to the sealing cavity, and the other end is connected to the oil drain joint.

[0009] A sealing ring is also provided between the support plate and the inner ring of the rotating oil cylinder.

[0010] A screw sealing ring is installed on the sealing screw.

[0011] The advantages of the utility model are: easy installation and disassembly: the components are connected by screws and the like, which makes it easy to install and disassemble quickly, and is conducive to operation and maintenance. During the test, it is convenient to observe whether there is oil leakage at both ends of the rotating cylinder, so as to intuitively judge whether it meets the application requirements. The debugging is simple: the structural design is reasonable, and the preparation work before the test (such as connecting the oil pipe, adjusting the pressure, etc.) and the debugging operation during the test are relatively simple and easy for the operator to master and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a cross-sectional view of the overall structure of the utility model;

[0013] Figure 2 This is a cross-sectional view of the oil drain circuit;

[0014] Figure 3 This is a schematic diagram of the appearance of the utility model. DETAILED DESCRIPTION

[0015] The following will be combined with the accompanying 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.

[0016] A rotary oil cylinder sealing test device, in which a support plate 1 and a pressure plate 3 are arranged above and below, and a connecting rod 2 is connected to the support plate 1 and the pressure plate 3 above and below respectively, the connecting rod 2 and the support plate 1 are fixed by screws 4, and the connecting rod 2 and the pressure plate 3 are fixed by screws 4, and the rotary oil cylinder is placed between the support plate 1 and the pressure plate 3, and the locating pin 5 is installed in the pin hole of the support plate, and the small hole of the inner ring 8 of the rotary oil cylinder is assembled with the locating pin 5. A sealing screw 7 is also provided on the support plate 1, and the sealing screw hole on the support plate 1 is aligned with the oil hole of the inner ring of the rotary oil cylinder. The sealing screw 7 is connected to the support plate 1 to seal the oil hole of the inner ring of the rotary oil cylinder; the outer circle of the inner ring 8 of the rotary oil cylinder is also covered with a bearing 9, and a rotating oil seal 10 is provided on one side of the bearing 9, and a rotating oil cylinder outer ring 11 is provided on the outer side of the rotating oil seal 10, and an end cover 12 is provided at the end of the inner ring 8 of the rotary oil cylinder, and the end cover 12 is in contact with the pressure plate 3. The device also includes an oil tank 16, which is connected to the rotary oil cylinder.

[0017] A sealing cavity 11 a is provided in the outer ring 11 of the rotary cylinder. The sealing cavity 11 a is composed of a rotary oil seal 10 , the inner ring 8 and the outer ring 11 .

[0018] The rotary cylinder is provided with an oil inlet joint 13, which is connected to the oil supply port 16a of the oil tank. The rotary cylinder is provided with an oil return joint 14, which is connected to the first oil return port 16b. The rotary cylinder is also provided with an oil drain joint 15, which is connected to the second oil return port 16c of the oil tank.

[0019] An oil inlet pipe N is provided on the outer ring of the rotating cylinder, and the oil inlet pipe N is connected to the oil inlet joint 13. An oil return pipe M is also provided on the outer ring of the rotating cylinder, and the oil return pipe M is connected to the oil return joint 14. An oil drain pipe P is provided inside the outer ring of the rotating cylinder, and one end of the oil drain pipe P is connected to the sealing chamber 11a, and the other end is connected to the oil drain joint 15.

[0020] A sealing ring 6 is further provided between the support plate 1 and the inner ring 8 of the rotary cylinder.

[0021] A screw sealing ring 7a is installed on the sealing screw.

[0022] The working principle of the utility model is as follows: First, the rotary cylinder is installed between the support plate 1 and the pressure plate 3. Then, the screws 4 are tightened to ensure that the inner ring 8 of the rotary cylinder fits tightly against the support plate 1, clamping the sealing ring 6 to ensure that there is no gap between them. At this point, the oil inlet connector 13 is connected to the oil supply port 16a of the oil tank 16 via an oil pipe. The oil return connector 14 is connected to the first oil return port 16b of the oil tank 16 via an oil pipe. The oil drain connector 15 is also connected to the second oil return port 16c of the oil tank 16 via an oil pipe, completing the connection of the entire device.

[0023] Then start the oil pump and adjust the pressure to the required value. The hydraulic oil will enter the rotating cylinder from the oil supply port 16a of the oil tank 16 through the oil inlet connector 13 and the oil inlet pipe. During the operation of the oil cylinder, the return oil will pass through the rotating cylinder return pipe M, the return oil connector 14, and finally return to the oil tank 16 through the first return oil port 16b. During this process, oil leakage will occur in the small gap between the inner ring 8 and the outer ring 11 of the rotating cylinder (such as Figure 1 (As shown in points a, b, and c), the leaking oil will flow into the two sealing chambers 11a of the rotary oil seal 10. The rotary oil cylinder seals the hydraulic oil through these two rotary oil seals to prevent further leakage of the hydraulic oil. At the same time, the hydraulic oil in the sealing chamber 11a will flow back to the oil tank 16 through the oil drain pipe P and the oil drain joint 15. During the debugging process, the entire pipeline should be vented by loosening the sealing screw 7 to fill the pipeline with hydraulic oil, making the experiment more accurate. During the entire test process, whether the rotary oil cylinder meets the application requirements is mainly judged by observing whether there is oil leakage at both ends of the rotary oil cylinder 16. If there is no oil leakage at both ends, it indicates that the sealing performance of the rotary oil cylinder is good and meets the application requirements; on the contrary, if oil leakage occurs, it means that there is a problem with the sealing of the rotary oil cylinder, which requires further inspection and processing.

Claims

1. A rotary cylinder seal test device, characterized by: The supporting plate and the pressing plate are arranged above and below, and the connecting rod is connected to the supporting plate and the pressing plate above and below respectively, the connecting rod and the supporting plate are fixed by screws, and the connecting rod and the pressing plate are fixed by screws. The rotating oil cylinder is placed between the supporting plate and the pressing plate, and the locating pin is installed in the pin hole of the supporting plate. The small hole of the inner ring of the rotating oil cylinder is assembled with the locating pin. A sealing screw is also provided on the supporting plate, and the sealing screw hole on the supporting plate is aligned with the oil hole of the inner ring of the rotating oil cylinder. The sealing screw is connected to the supporting plate to seal the oil hole of the inner ring of the rotating oil cylinder; the outer circle of the inner ring of the rotating oil cylinder is also covered with a bearing, and a rotating oil seal is provided on one side of the bearing, and a rotating oil cylinder outer ring is provided on the outside of the rotating oil seal. An end cover is provided at the end of the inner ring of the rotating oil cylinder, and the end cover is fitted with the pressing plate. The device also includes an oil tank, which is connected to the rotating oil cylinder.

2. The rotary cylinder sealing test device according to claim 1, characterized in that: A sealing cavity is provided in the outer ring of the rotating oil cylinder, and the sealing cavity is composed of a rotating oil seal, an inner ring of the rotating oil cylinder, and an outer ring of the rotating oil cylinder.

3. The rotary cylinder sealing test device according to claim 2, characterized in that: The rotary oil cylinder is provided with an oil inlet joint, which is connected to the oil supply port of the oil tank. The rotary oil cylinder is provided with an oil return joint, which is connected to the first oil return port. The rotary oil cylinder is also provided with an oil drain joint, which is connected to the second oil return port of the oil tank.

4. The rotary cylinder sealing test device according to claim 3, characterized in that: An oil inlet pipe is provided on the outer ring of the rotating oil cylinder, and the oil inlet pipe is connected to the oil inlet joint. An oil return pipe is also provided on the outer ring of the rotating oil cylinder, and the oil return pipe is connected to the oil return joint. An oil drain pipe is provided inside the outer ring of the rotating oil cylinder, and one end of the oil drain pipe is connected to the sealing cavity, and the other end is connected to the oil drain joint.

5. The rotary cylinder sealing test device according to claim 4, characterized in that: A sealing ring is also provided between the support plate and the inner ring of the rotating oil cylinder.

6. The rotary cylinder sealing test device according to claim 4, characterized in that: A screw sealing ring is installed on the sealing screw.

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