Test fixture for hydraulic connector

Abstract

The application provides a hydraulic connector test tool. The hydraulic connector test tool comprises a test tool body having a mounting cavity; a first mounting assembly configured to be sleeved on a male hydraulic connector and to form a clearance fit with the outer wall surface of the male hydraulic connector, the inner circumferential surface of the first mounting assembly being provided with a receiving groove; and an adaptive sealing structure located in the receiving groove, the adaptive sealing structure being used for sealing the clearance between the first mounting assembly and the male hydraulic connector, and the adaptive sealing structure being configured to be able to adapt to the size change of the clearance between the first mounting assembly and the male hydraulic connector. The hydraulic connector test tool of the technical scheme of the application can solve the problem that, when the hydraulic connector test tool of the prior art is used for testing, the male hydraulic connector has no movement allowance in the direction perpendicular to the plugging direction under the condition of ensuring the sealing performance, so that the real working condition cannot be better simulated.

Description

Technical Field

[0001] This invention relates to the field of underwater hydraulic connection equipment testing fixtures, and more specifically, to a testing fixture for hydraulic connectors. Background Technology

[0002] The connection between the hydraulic components of the underwater control system and the supporting facility is achieved through underwater hydraulic connectors. To ensure their reliability and durability in the underwater environment, underwater hydraulic connectors need to undergo a series of rigorous tests and verifications before being put into formal use. However, when using existing hydraulic connector testing fixtures, while ensuring sealing performance, the hydraulic connectors have no room for movement in the direction perpendicular to the insertion direction, making it impossible to better simulate real working conditions. Summary of the Invention

[0003] The main objective of this invention is to provide a testing fixture for hydraulic connectors that can solve the problem that when testing with existing hydraulic connector testing fixtures, the hydraulic connector has no room for movement in the direction perpendicular to the insertion direction while ensuring sealing performance, which makes it impossible to better simulate real working conditions.

[0004] To achieve the above objectives, the present invention provides a test fixture for a hydraulic connector, comprising: a test fixture body having a mounting cavity; a first mounting component installed in the mounting cavity, wherein the outer wall surface of the first mounting component is in a sealing fit with the inner wall surface of the mounting cavity, the first mounting component is configured to be sleeved on a male hydraulic connector and form a clearance fit with the outer wall surface of the male hydraulic connector, and a receiving groove is provided on the inner circumferential surface of the first mounting component; and an adaptive sealing structure located in the receiving groove, the adaptive sealing structure being used to seal the gap between the first mounting component and the male hydraulic connector, and the adaptive sealing structure being configured to adapt to changes in the size of the gap between the first mounting component and the male hydraulic connector.

[0005] Furthermore, the adaptive sealing structure includes a first annular sealing structure and a second annular sealing structure that are separately configured. The first annular sealing structure is configured to be fixedly sleeved on the outer periphery of the male hydraulic connector. In the radial direction of the first annular sealing structure, the receiving groove includes an installation sidewall. The second annular sealing structure is configured to be fixedly installed on the outer periphery of the installation sidewall. There is a gap between the outer wall surface of the first annular sealing structure and the installation sidewall, and there is a gap between the outer wall surface of the second annular sealing structure and the outer wall surface of the male hydraulic connector. The first annular sealing structure can move radially relative to the second annular sealing structure along the first annular sealing structure to form a seal.

[0006] Furthermore, the first annular sealing structure includes a first inclined surface, and the second annular sealing structure includes a second inclined surface. In the radial direction of the first annular sealing structure, the first annular sealing structure and the second annular sealing structure slide together through the first inclined surface and the second inclined surface to form a seal.

[0007] Furthermore, the first annular sealing structure includes a first vertical surface, and the second annular sealing structure includes a second vertical surface. Both the first vertical surface and the second vertical surface extend radially along the first annular sealing structure. In the radial direction of the first annular sealing structure, the first annular sealing structure and the second annular sealing structure slide together through the first vertical surface and the second vertical surface to form a seal.

[0008] Furthermore, the adaptive sealing structure also includes a third annular sealing structure, which is configured to be fixedly sleeved on the outer periphery of the male hydraulic joint. The third annular sealing structure is located on the side of the first annular sealing structure opposite to the second annular sealing structure and abuts against the first annular sealing structure; and / or, the first annular sealing structure and the second annular sealing structure are made of elastic material.

[0009] Furthermore, the first mounting assembly includes a first mounting member and a second mounting member. The first mounting member is sleeved on the outer periphery of the male hydraulic connector and forms a clearance fit with the outer wall surface of the male hydraulic connector. The second mounting member is sleeved on the outer periphery of the first mounting member. One end of the second mounting member forms a clearance fit with the outer wall surface of the male hydraulic connector, and the other end of the second mounting member is sleeved on the outer periphery of the first mounting member and forms a receiving groove with the end face of the first mounting member.

[0010] Furthermore, along the insertion direction, the second mounting member includes a first stepped surface and a second stepped surface, with the first mounting member abutting against the second stepped surface and forming a receiving groove with the first stepped surface.

[0011] Furthermore, the mounting cavity includes a male hydraulic connector mounting cavity, a plugging cavity, and a female hydraulic connector mounting cavity that are arranged sequentially and interconnected along the plugging direction. The first mounting component is installed in the male hydraulic connector mounting cavity. The hydraulic connector testing fixture also includes a second mounting component. The second mounting component includes a third mounting member. The third mounting member is used to install the female hydraulic connector. The third mounting member can reciprocate along the plugging direction within the plugging cavity and the female hydraulic connector mounting cavity.

[0012] Furthermore, the first mounting component includes a first limiting structure, which is installed in the male hydraulic connector mounting cavity. A third stepped surface is provided on the inner wall of the male hydraulic connector mounting cavity. One end of the first mounting component forms a stop with the third stepped surface, and the other end of the first mounting component is in contact with the first limiting structure.

[0013] Furthermore, the second mounting component also includes a second limiting structure, which is mounted on the test fixture body to limit the third mounting component in the insertion direction.

[0014] Furthermore, a mud scraper ring is provided on the inner wall of the mounting cavity of the female hydraulic joint.

[0015] Furthermore, the test fixture body is provided with a first inlet and an exhaust port that communicate with the insertion cavity.

[0016] The present invention employs a test fixture body, a first mounting component, and an adaptive sealing structure. A gap exists between the inner wall of the first mounting component and the outer wall of the male hydraulic connector. This gap provides space for the male hydraulic connector to move in a direction perpendicular to the insertion direction, allowing it to move perpendicular to the insertion direction. During testing, as the male hydraulic connector moves in this direction, the gap between the inner wall of the first mounting component and the outer wall of the male hydraulic connector increases or decreases. Because the adaptive sealing component can adapt to changes in the gap between the first mounting component and the male hydraulic connector, it allows the male hydraulic connector to move in a direction perpendicular to the insertion direction without affecting the sealing performance of the test fixture, thus better simulating real-world working conditions. Attached Figure Description

[0017] The accompanying drawings, which form part of this specification, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0018] Figure 1 A schematic diagram of the structure of a test fixture for a hydraulic connector according to an embodiment of the present invention is shown;

[0019] Figure 2 A partial structural schematic diagram of a test fixture for a hydraulic connector according to an embodiment of the present invention is shown;

[0020] Figure 3 A partial structural schematic diagram of a test fixture for a hydraulic connector according to an embodiment of the present invention is shown.

[0021] The above figures include the following reference numerals:

[0022] 10. Test fixture body; 11. Mounting cavity; 111. Insertion cavity; 112. Female hydraulic connector mounting cavity; 113. Third stepped surface; 12. First inlet; 13. Exhaust port; 14. Second inlet; 15. Third inlet; 20. First mounting component; 21. First mounting piece; 22. Second mounting piece; 221. First stepped surface; 222. Second stepped surface; 223. Mounting groove; 23. First limiting structure; 231. Locking hole; 232. First connecting pipe; 233. First channel; 30. Male fluid 31. Compression fitting; 40. Receiving groove; 41. Adaptive sealing structure; 42. First annular sealing structure; 50. Second annular sealing structure; 60. Second mounting assembly; 61. Third mounting piece; 611. Second channel; 62. Second limiting structure; 63. Sludge scraper ring; 64. Second connecting pipe; 70. Female hydraulic fitting; 80. First seal; 90. Second seal; 100. Third seal; 200. Locking fastener; 300. Stop limiting structure; 400. Fourth seal. Detailed Implementation

[0023] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0024] See also Figures 1 to 3 As shown, the present invention provides a test fixture for hydraulic connectors, comprising: a test fixture body 10 having a mounting cavity 11; a first mounting component 20 installed in the mounting cavity 11, the outer wall surface of the first mounting component 20 sealingly engaging with the inner wall surface of the mounting cavity 11, the first mounting component 20 being configured to be sleeved on a male hydraulic connector 30 and forming a clearance fit with the outer wall surface of the male hydraulic connector 30, the inner circumferential surface of the first mounting component 20 being provided with a receiving groove 31; and an adaptive sealing structure 40 located in the receiving groove 31, the adaptive sealing structure 40 being used to seal the gap between the first mounting component 20 and the male hydraulic connector 30, and the adaptive sealing structure 40 being configured to adapt to changes in the size of the gap between the first mounting component 20 and the male hydraulic connector 30.

[0025] In this embodiment, when the male hydraulic connector 30 and the female hydraulic connector 70 are tested using a test fixture for the hydraulic connector, the first mounting component 20 is sleeved on the male hydraulic connector 30. There is a gap between the inner wall surface of the first mounting component 20 and the outer wall surface of the male hydraulic connector 30. The existence of this gap provides movement space for the male hydraulic connector 30 to move in a direction perpendicular to the insertion direction, so that the male hydraulic connector 30 can move in a direction perpendicular to the insertion direction. During the test, when the male hydraulic connector 30 moves in a direction perpendicular to the insertion direction, the gap between the inner wall of the first mounting component 20 and the outer wall of the male hydraulic connector 30 increases or decreases. Since the adaptive sealing component can adapt to the change in the gap between the first mounting component 20 and the male hydraulic connector 30, it can allow the male hydraulic connector 30 to move in a direction perpendicular to the insertion direction without affecting the sealing performance of the test fixture, so as to better simulate the real working conditions. It can also avoid the problem of wear and damage to the male hydraulic connector 30 and the female hydraulic connector 70 caused by forced insertion when they are misaligned.

[0026] See also Figures 1 to 3 As shown, in one embodiment of the present invention, the adaptive sealing structure 40 includes a first annular sealing structure 41 and a second annular sealing structure 42 that are separately arranged. The first annular sealing structure 41 is configured to be fixedly sleeved on the outer periphery of the male hydraulic connector 30. In the radial direction of the first annular sealing structure 41, the receiving groove 31 includes a mounting sidewall. The second annular sealing structure 42 is configured to be fixedly installed on the outer periphery of the mounting sidewall. There is a gap between the outer wall surface of the first annular sealing structure 41 and the mounting sidewall, and there is a gap between the outer wall surface of the second annular sealing structure 42 and the outer wall surface of the male hydraulic connector 30. The first annular sealing structure 41 can move radially relative to the second annular sealing structure 42 along the first annular sealing structure 41 to form a seal.

[0027] In this embodiment, the radial direction of the first annular sealing structure 41 is perpendicular to the insertion direction. The first annular sealing structure 41 is fixedly sleeved on the outer periphery of the male hydraulic connector 30. The inner wall surface of the first annular sealing structure 41 is in sealing fit with the outer peripheral surface of the male hydraulic connector 30. In the radial direction of the first annular sealing structure 41, there is a gap between the outer wall surface of the first annular sealing structure 41 and the mounting side wall, and there is a gap between the outer wall surface of the second annular sealing structure 42 and the outer wall surface of the male hydraulic connector 30. This provides space for the male hydraulic connector 30 to move in the radial direction of the first annular sealing structure 41. The first annular sealing structure 41 and the second annular sealing structure 42 are sealed together to seal the gap between the inner wall surface of the first mounting assembly 20 and the outer wall surface of the male hydraulic connector 30. The first annular sealing structure 41 can move relative to the second annular sealing structure 42 in the radial direction. During the movement of the first annular sealing structure 41 relative to the second annular sealing structure 42, the two are always in a sealed state. This can not only seal the gap between the first mounting assembly 20 and the male hydraulic connector 30, but also adapt to changes in the size of the gap between the first mounting assembly 20 and the male hydraulic connector 30.

[0028] See also Figures 1 to 3 As shown, in one embodiment of the present invention, the first annular sealing structure 41 includes a first inclined surface, and the second annular sealing structure 42 includes a second inclined surface. In the radial direction of the first annular sealing structure 41, the first annular sealing structure 41 and the second annular sealing structure 42 slide and cooperate through the first inclined surface and the second inclined surface to form a seal.

[0029] In this embodiment, the first annular sealing structure 41 and the second annular sealing structure 42 achieve a sealing fit through a first inclined surface and a second inclined surface. That is, the sealing surface between the two is an inclined surface. The inclined surface fit makes the contact stress distribution between the two more uniform, reduces the local stress concentration of the first annular sealing structure 41 and the second annular sealing structure 42, thereby extending the service life of the first annular sealing structure 41 and the second annular sealing structure 42. At the same time, the inclined surface fit makes the sliding between the first annular sealing structure 41 and the second annular sealing structure 42 easier. The sliding between the first inclined surface and the second inclined surface allows the relative position of the first annular sealing structure 41 and the second annular sealing structure 42 to be adjusted, so that the adaptive sealing structure 40 can adapt to the change in the gap size between the first mounting assembly 20 and the male hydraulic joint 30.

[0030] See also Figures 1 to 3As shown, in one embodiment of the present invention, the first annular sealing structure 41 includes a first vertical surface, and the second annular sealing structure 42 includes a second vertical surface. Both the first vertical surface and the second vertical surface extend radially along the first annular sealing structure 41. In the radial direction of the first annular sealing structure 41, the first annular sealing structure 41 and the second annular sealing structure 42 slide and cooperate through the first vertical surface and the second vertical surface to form a seal.

[0031] In this embodiment, the first annular sealing structure 41 and the second annular sealing structure 42 achieve a sealing fit through the first vertical surface and the second vertical surface. That is, the sealing surface between the two is a vertical plane. The relative position of the first annular sealing structure 41 and the second annular sealing structure 42 is adjusted by sliding between the first vertical surface and the second vertical surface, so that the adaptive sealing structure 40 can adapt to the change in the gap size between the first mounting component 20 and the male hydraulic connector 30.

[0032] See also Figures 1 to 3 As shown, in one embodiment of the present invention, the adaptive sealing structure 40 further includes a third annular sealing structure 50, which is configured to be fixedly sleeved on the outer periphery of the male hydraulic connector 30. The third annular sealing structure 50 is located on the side of the first annular sealing structure 41 away from the second annular sealing structure 42 and abuts against the first annular sealing structure 41.

[0033] In this embodiment, the third annular sealing structure 50 abuts against the first annular sealing structure 41, so that the first annular sealing structure 41 and the second annular sealing structure 42 can maintain a tight fit, which can make the structure of the adaptive sealing structure 40 more compact and ensure the sealing effect.

[0034] In one embodiment of the present invention, the first annular sealing structure 41 and the second annular sealing structure 42 are made of elastic material.

[0035] In this embodiment, the first annular sealing structure 41 and the second annular sealing structure 42 achieve a sealing fit by generating elastic deformation through mutual compression. Since both the first annular sealing structure 41 and the second annular sealing structure 42 have good elastic recovery capabilities, even if the first annular sealing structure 41 moves frequently relative to the second annular sealing structure 42 along the radial direction of the first annular sealing structure 41, and the relative positions between the two change frequently, they can always maintain a tight fit, thereby ensuring the sealing effect of the hydraulic connector test fixture.

[0036] See also Figures 1 to 3As shown, in one embodiment of the present invention, the first mounting component 20 includes a first mounting member 21 and a second mounting member 22. The first mounting member 21 is sleeved on the outer periphery of the male hydraulic connector 30 and forms a clearance fit with the outer wall surface of the male hydraulic connector 30. The second mounting member 22 is sleeved on the outer periphery of the first mounting member 21. One end of the second mounting member 22 forms a clearance fit with the outer wall surface of the male hydraulic connector 30, and the other end of the second mounting member 22 is sleeved on the outer periphery of the first mounting member 21 and forms a receiving groove 31 with the end face of the first mounting member 21.

[0037] In this embodiment, the first mounting member 21 is sleeved on the outer periphery of the male hydraulic connector 30. There is a gap between the inner wall surface of the first mounting member 21 and the outer wall surface of the male hydraulic connector 30, and there is a gap between the inner wall surface of one end of the second mounting member 22 and the outer wall surface of the male hydraulic connector 30, so as to provide movement space for the male hydraulic connector 30 to move in a direction perpendicular to the insertion direction. The adaptive sealing structure 40 can seal the gap between the inner wall surface of the first mounting member 21 and the outer wall surface of the male hydraulic connector 30, and adapt to the change in the size of the gap between the inner wall surface of the first mounting member 21 and the outer wall surface of the male hydraulic connector 30.

[0038] It should be noted that, in order to test male hydraulic connectors 30 of different specifications, the dimensions of the first mounting part 21 and the second mounting part 22 can be adjusted as needed to match male hydraulic connectors 30 of different specifications, thereby reducing testing costs.

[0039] See also Figures 1 to 3 As shown, in one embodiment of the present invention, along the insertion direction, the second mounting member 22 includes a first step surface 221 and a second step surface 222, and the first mounting member 21 is attached to the second step surface 222 and forms a receiving groove 31 with the first step surface 221.

[0040] With the above configuration, a receiving groove 31 for accommodating the adaptive sealing structure 40 can be formed, thereby providing a moving space for the first annular sealing structure 41 to move radially relative to the second annular sealing structure 42 along the first annular sealing structure 41.

[0041] See also Figures 1 to 3 As shown, in one embodiment of the present invention, the mounting cavity 11 includes a male hydraulic connector mounting cavity, a plugging cavity 111, and a female hydraulic connector mounting cavity 112 that are arranged sequentially and interconnected along the plugging direction. The first mounting component 20 is installed in the male hydraulic connector mounting cavity. The hydraulic connector testing fixture also includes a second mounting component 60. The second mounting component 60 includes a third mounting member 61, which is used to install the female hydraulic connector 70. The third mounting member 61 can reciprocate along the plugging direction within the plugging cavity 111 and the female hydraulic connector mounting cavity 112.

[0042] In this embodiment, the first mounting component 20 can install the male hydraulic connector 30 in the male hydraulic connector mounting cavity, and the third mounting component 61 can install the female hydraulic connector 70 in the female hydraulic connector mounting cavity 112. Driven by the third mounting component 61, the female hydraulic connector 70 can move towards or away from the male hydraulic connector 30 along the insertion direction, and realize the insertion and removal cooperation between the two in the insertion cavity 111.

[0043] See also Figures 1 to 3 As shown, in one embodiment of the present invention, the outer wall surface of the second mounting member 22 is provided with a first sealing member 80, thereby achieving a seal between the outer wall surface of the second mounting member 22 and the inner wall surface of the male hydraulic connector mounting cavity.

[0044] like Figure 2 As shown, in one embodiment, a mounting groove 223 is provided on the outer wall of the second mounting member 22, and the first sealing member 80 is installed in the mounting groove 223.

[0045] See also Figures 1 to 3 As shown, in one embodiment of the present invention, the first mounting component 20 includes a first limiting structure 23, which is installed in the male hydraulic connector mounting cavity. A third step surface 113 is provided on the inner wall of the male hydraulic connector mounting cavity. One end of the first mounting component 20 forms a stop with the third step surface 113, and the other end of the first mounting component 20 is in contact with the first limiting structure 23.

[0046] In this embodiment, the end of the first mounting component 20 facing the female hydraulic connector 70 forms a stop with the third step surface 113, and the end of the first mounting component 20 away from the female hydraulic connector 70 fits with the first limiting structure 23, thereby achieving the positioning of the first mounting component 20 in the insertion direction.

[0047] See also Figures 1 to 3 As shown, in one embodiment of the present invention, the first mounting component 20 further includes a stop and limiting structure 300. The stop and limiting structure 300 is sleeved on the outer periphery of the male hydraulic connector 30. Along the insertion direction, the stop and limiting structure 300 abuts against the end face of the second mounting member 22 away from the female hydraulic connector 70. The end of the second mounting member 22 facing the female hydraulic connector 70 forms a stop engagement with the third step surface 113, thereby limiting the male hydraulic connector 30 in the insertion direction.

[0048] See also Figures 1 to 3As shown, in one embodiment of the present invention, the end of the first limiting structure 23 facing the female hydraulic connector 70 is threaded with the inner wall of the male hydraulic connector mounting cavity, and the end of the first limiting structure 23 facing away from the female hydraulic connector 70 is provided with a locking hole 231. When the first limiting structure 23 needs to be installed into the male hydraulic connector mounting cavity, a wrench can be inserted into the locking hole 231 to tighten the first limiting structure 23.

[0049] See also Figures 1 to 3 As shown, in one embodiment of the present invention, the hydraulic connector testing fixture further includes a first connecting pipe 232 and a second connecting pipe 64. A first channel 233 is provided on the first limiting structure 23, which extends through the first limiting structure 23 in the insertion direction. The third mounting component 61 includes a second channel 611 extending in the insertion direction and communicating with the outside. One end of the male hydraulic connector 30 away from the female hydraulic connector 70 can be inserted into the first channel 233. One end of the first connecting pipe 232 is inserted into the first channel 233 and connected to the male hydraulic connector 30. The other end of the first connecting pipe 232 is used to connect to a hydraulic power device (such as a hydraulic press). Liquid is injected into the first connecting pipe 232 to provide pressure to the male hydraulic connector 30. One end of the female hydraulic connector 70 away from the male hydraulic connector 30 is inserted into the second channel 611. One end of the second connecting pipe 64 is inserted into the second channel 611 and connected to the female hydraulic connector 70. The other end of the second connecting pipe 64 is used to connect to a hydraulic power device (such as a hydraulic press). Liquid is injected into the second connecting pipe 64 to provide pressure to the female hydraulic connector 70.

[0050] In one embodiment, both the first connecting pipe 232 and the second connecting pipe 64 are steel pipes.

[0051] See also Figures 1 to 3 As shown, in one embodiment of the present invention, the second mounting component 60 further includes a second limiting structure 62, which is mounted on the test fixture body 10 to limit the third mounting member 61 in the insertion direction.

[0052] The above settings allow for limiting the position of the third mounting component 61 in the insertion direction.

[0053] See also Figures 1 to 3 As shown, in one embodiment of the present invention, the hydraulic connector test fixture further includes a locking fastener 200, and the second limiting structure 62 is connected to the test fixture body 10 through the locking fastener 200.

[0054] In one embodiment, the locking device 200 is a bolt.

[0055] In one embodiment, the first mounting component 21 and the second mounting component 22 are both sleeve structures, and the third mounting component 61 is a flange.

[0056] See also Figures 1 to 3 As shown, in one embodiment of the present invention, a mud scraper ring 63 is provided on the inner wall of the female hydraulic connector mounting cavity 112.

[0057] In this embodiment, a second sealing element 90 is provided on the inner wall of the female hydraulic connector mounting cavity 112, thereby achieving a seal between the outer wall surface of the third mounting member 61 and the inner wall surface of the female hydraulic connector mounting cavity 112. During testing, to more closely simulate underwater conditions, the insertion cavity 111 is filled with mud and water. The mud scraper ring 63 is located at the end of the female hydraulic connector mounting cavity 112 facing the insertion cavity 111. When the third mounting member 61 moves from the insertion cavity 111 away from the male hydraulic connector 30 to the female hydraulic connector mounting cavity 112, the mud scraper ring 63 can scrape off the mud and sand adhering to the surface of the third mounting member 61, preventing wear on the outer wall surface of the third mounting member 61. At the same time, it can also ensure the seal between the outer wall surface of the third mounting member 61 and the inner wall surface of the female hydraulic connector mounting cavity 112.

[0058] See also Figures 1 to 3 As shown, in one embodiment of the present invention, a third sealing element 100 is provided on both the outer wall surface and the inner wall surface of the second limiting structure 62, thereby achieving sealing between the outer wall surface of the second limiting structure 62 and the inner wall surface of the female hydraulic connector mounting cavity 112, and sealing between the inner wall surface of the second limiting structure 62 and the outer wall surface of the third mounting element 61.

[0059] See also Figures 1 to 3 As shown, in one embodiment of the present invention, the test fixture body 10 is provided with a first inlet 12 and an exhaust port 13 that communicate with the insertion cavity 111.

[0060] In this embodiment, mud and water are added into the insertion cavity 111 through the first inlet 12 to simulate underwater working conditions, and the air in the insertion cavity 111 can be discharged through the exhaust port 13.

[0061] See also Figures 1 to 3 As shown, in one embodiment of the present invention, a fourth sealing element 400 is provided on the outer wall surface of the third mounting member 61, thereby achieving a seal between the outer wall surface of the third mounting member 61 and the inner wall surface of the female hydraulic connector mounting cavity 112.

[0062] See also Figures 1 to 3As shown, in one embodiment of the present invention, the test fixture body 10 is further provided with a second inlet 14 and a third inlet 15, both of which are connected to the female hydraulic connector mounting cavity 112. During testing, liquid is injected into the insertion cavity 111 from the first inlet 12 using a hydraulic power device, ensuring stable pressure. Then, liquid is injected into the female hydraulic connector mounting cavity 112 from the second inlet 14 and the third inlet 15 using a hydraulic power device, enabling the third mounting component 61 to reciprocate along the insertion direction, thereby realizing the insertion and removal test of the male hydraulic connector 30 and the female hydraulic connector 70. As can be seen from the above, the insertion and removal of the male hydraulic connector 30 and the female hydraulic connector 70 in this application are achieved by hydraulic drive, which is simple and reliable to operate. It is a non-mechanical operation, allowing operators to stay away from the fixture and ensuring personnel safety.

[0063] See also Figures 1 to 3 As shown, in one embodiment of the present invention, the end of the third mounting member 61 that is away from the male hydraulic connector 30 protrudes from the second limiting structure 62. Since the position of the male hydraulic connector 30 in the male hydraulic connector mounting cavity is fixed and the position of the female hydraulic connector 70 relative to the third mounting member 61 is fixed, the distance between the male hydraulic connector 30 and the female hydraulic connector 70 can be determined by the length of the part of the third mounting member 61 that protrudes from the second limiting structure 62.

[0064] As can be seen from the above description, the embodiments of the present invention achieve the following technical effects: A test fixture body, a first mounting component, and an adaptive sealing structure are provided. A gap exists between the inner wall surface of the first mounting component and the outer wall surface of the male hydraulic connector. This gap provides space for the male hydraulic connector to move in a direction perpendicular to the insertion direction, allowing it to move in a direction perpendicular to the insertion direction. During the test, when the male hydraulic connector moves in a direction perpendicular to the insertion direction, the gap between the inner wall surface of the first mounting component and the outer wall surface of the male hydraulic connector increases or decreases. Since the adaptive sealing component can adapt to changes in the gap between the first mounting component and the male hydraulic connector, it allows the male hydraulic connector to move in a direction perpendicular to the insertion direction without affecting the sealing performance of the test fixture, thus better simulating real working conditions.

[0065] Obviously, the embodiments described above are merely some, not all, embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort should fall within the scope of protection of the present invention.

[0066] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0067] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A testing fixture for hydraulic connectors, characterized in that, include: The test fixture body (10) has a mounting cavity (11); A first mounting component (20) is installed inside the mounting cavity (11). The outer wall surface of the first mounting component (20) is sealed to the inner wall surface of the mounting cavity (11). The first mounting component (20) is configured to be sleeved on the male hydraulic connector (30) and form a clearance fit with the outer wall surface of the male hydraulic connector (30). A receiving groove (31) is provided on the inner circumferential surface of the first mounting component (20). An adaptive sealing structure (40) is located within the receiving groove (31) and is used to seal the gap between the first mounting assembly (20) and the male hydraulic connector (30). The adaptive sealing structure (40) is configured to adapt to changes in the size of the gap between the first mounting assembly (20) and the male hydraulic connector (30). The mounting cavity (11) includes a male hydraulic connector mounting cavity, a plugging cavity (111), and a female hydraulic connector mounting cavity (112) arranged sequentially and interconnected along the plugging direction. The first mounting component (20) is installed in the male hydraulic connector mounting cavity. The hydraulic connector testing fixture also includes a second mounting component (60). The second mounting component (60) includes a third mounting member (61). The third mounting member (61) is used to install the female hydraulic connector (70). The third mounting member (61) can reciprocate along the plugging direction in the plugging cavity (111) and the female hydraulic connector mounting cavity (112).

2. The testing fixture for hydraulic connectors according to claim 1, characterized in that, The adaptive sealing structure (40) includes a first annular sealing structure (41) and a second annular sealing structure (42) that are separately arranged. The first annular sealing structure (41) is configured to be fixedly sleeved on the outer periphery of the male hydraulic connector (30). In the radial direction of the first annular sealing structure (41), the receiving groove (31) includes an installation sidewall. The second annular sealing structure (42) is configured to be fixedly installed on the inner periphery of the installation sidewall. There is a gap between the outer wall surface of the first annular sealing structure (41) and the installation sidewall. There is a gap between the inner wall surface of the second annular sealing structure (42) and the outer wall surface of the male hydraulic connector (30). The first annular sealing structure (41) can move radially relative to the second annular sealing structure (42) along the first annular sealing structure (41) and form a seal.

3. The testing fixture for hydraulic connectors according to claim 2, characterized in that, The first annular sealing structure (41) includes a first inclined surface, and the second annular sealing structure (42) includes a second inclined surface. In the radial direction of the first annular sealing structure (41), the first annular sealing structure (41) and the second annular sealing structure (42) slide and cooperate through the first inclined surface and the second inclined surface to form a seal.

4. The testing fixture for hydraulic connectors according to claim 2, characterized in that, The first annular sealing structure (41) includes a first vertical surface, and the second annular sealing structure (42) includes a second vertical surface. Both the first vertical surface and the second vertical surface extend radially along the first annular sealing structure (41). In the radial direction of the first annular sealing structure (41), the first annular sealing structure (41) and the second annular sealing structure (42) slide and cooperate through the first vertical surface and the second vertical surface to form a seal.

5. The test fixture for hydraulic connectors according to any one of claims 2 to 4, characterized in that, The adaptive sealing structure (40) further includes a third annular sealing structure (50), which is configured to be fixedly sleeved on the outer periphery of the male hydraulic joint (30). The third annular sealing structure (50) is located on the side of the first annular sealing structure (41) away from the second annular sealing structure (42) and abuts against the first annular sealing structure (41); and / or, the first annular sealing structure (41) and the second annular sealing structure (42) are made of elastic material.

6. The testing fixture for hydraulic connectors according to claim 1, characterized in that, The first mounting assembly (20) includes a first mounting member (21) and a second mounting member (22). The first mounting member (21) is sleeved on the outer periphery of the male hydraulic connector (30) and forms a clearance fit with the outer wall surface of the male hydraulic connector (30). The second mounting member (22) is sleeved on the outer periphery of the first mounting member (21). One end of the second mounting member (22) forms a clearance fit with the outer wall surface of the male hydraulic connector (30). The other end of the second mounting member (22) is sleeved on the outer periphery of the first mounting member (21) and forms the receiving groove (31) with the end face of the first mounting member (21).

7. The testing fixture for hydraulic connectors according to claim 6, characterized in that, Along the insertion direction, the second mounting member (22) includes a first step surface (221) and a second step surface (222), the first mounting member (21) is attached to the second step surface (222) and forms the receiving groove (31) with the first step surface (221).

8. The testing fixture for hydraulic connectors according to claim 1, characterized in that, The first mounting component (20) includes a first limiting structure (23), which is installed in the male hydraulic connector mounting cavity. A third step surface (113) is provided on the inner wall of the male hydraulic connector mounting cavity. One end of the first mounting component (20) forms a stop with the third step surface (113), and the other end of the first mounting component (20) is in contact with the first limiting structure (23).

9. The testing fixture for hydraulic connectors according to claim 1, characterized in that, The second mounting component (60) further includes a second limiting structure (62) mounted on the test fixture body (10) to limit the third mounting component (61) in the insertion direction.

10. The testing fixture for hydraulic connectors according to claim 1, characterized in that, The inner wall of the mounting cavity (112) of the female hydraulic joint is provided with a mud scraper ring (63).

11. The testing fixture for hydraulic connectors according to claim 1, characterized in that, The test fixture body (10) is provided with a first inlet (12) and an exhaust port (13) that communicate with the insertion cavity (111).

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