Test tool and test method thereof

Abstract

The invention provides a test tool and a test method thereof. The test tool is used for testing a separation joint comprising a matching piece and a connecting piece. The test tool comprises a base, and a first pressing piece, a second pressing piece and a pushing piece which are distributed along a first direction parallel to the length of the base, the second pressing piece is arranged on the base in a sliding mode and used for being detachably connected with the connecting piece. The pushing piece is connected with the second pressing piece and can stretch out and draw back in the first direction. The first pressing piece is arranged at the top of the base in a rotatable mode in the plane parallel to the base and used for being detachably connected with the matching piece and adjusting the angle of the matching piece to be connected with the connecting piece after being coaxial with the connecting piece. The test tool can limit the positions of the connecting piece and the matching piece in the horizontal direction and the vertical direction at the same time, so that the axis of the connecting piece is kept unchanged when the connecting piece moves towards the matching piece, the axis of the matching piece can be rapidly adjusted until the axis of the matching piece is coaxial with the connecting piece only by rotating the second pressing piece in the plane parallel to the base, and a separation connector is prevented from being damaged.

Description

Technical Field

[0001] The present application relates to the technical field of tooling and fixtures, and in particular, to a test tooling and a test method thereof. Background Art

[0002] The separation joint is a mechanism that has the functions of connection, unlocking and separation. After the separation joint is produced, it is necessary to conduct a life test to ensure its stability in use. During the test, two clamps are usually used to clamp the mating parts and connecting parts of the separation joint respectively to test whether the mating parts and connecting parts can still be used normally under long-term separation or connection conditions.

[0003] At present, the docking work of the separation joint is mainly performed manually by operators. The docking of the mating parts and the connecting parts depends on the operator's work experience and professionalism for adjustment, which can easily cause the docking installation angle of the separation joint to be offset, thereby easily causing scratches on the inner wall of the separation joint and causing damage to the separation joint. Summary of the invention

[0004] In view of the shortcomings of the existing methods, the present application proposes a test tool and a test method thereof to solve the technical problem in the related art that manual butt-jointing of separate joints easily leads to a deviation in the butt-jointing installation angle of the separate joints.

[0005] In a first aspect, an embodiment of the present application provides a test fixture for testing a separation joint of a launch vehicle, wherein the separation joint includes a mating piece and a connecting piece, and the test fixture includes a base and a first pressing piece, a second pressing piece, and a pushing piece distributed along a first direction parallel to the length of the base; The second pressing member is slidably disposed on the base and is used for detachably connecting with the connecting member; The pushing member is connected to the second pressing member and can be extended and retracted along the first direction; The first pressing member is rotatably arranged on the top of the base in a plane parallel to the base, and is used for detachably connecting with the matching member; The first pressing member is used to adjust the angle of the matching member to be coaxial with the connecting member and then engage with it.

[0006] Optionally, the test fixture further comprises a limit block arranged on the top of the base, a rotatable rotating seat is arranged on the top of the limit block, and the first pressing member is connected to the top of the rotating seat.

[0007] Optionally, an auxiliary hole extending toward the axis of the rotating seat is provided on the outer peripheral wall of the rotating seat.

[0008] Optionally, the first pressing member includes a first pressing plate connected to the rotating seat, a first connecting port is formed on the first pressing plate, a main body of the matching member is located inside the first pressing plate, an end of the matching member passes through the first connecting port, and a fixing seat of the matching member is fixed on the outside of the first pressing plate; The second pressing member includes a second pressing plate, a second connecting port is formed on the second pressing plate, the main body of the connecting member is located on the inner side of the second pressing plate, the end of the connecting member passes through the second connecting port, and the connecting member fixing seat is fixed on the outer side of the second pressing plate; The axes of the first docking port and the second docking port are in the same horizontal plane.

[0009] Optionally, the second pressing member further comprises a connecting plate connected below the second pressing plate and away from one side of the first pressing plate, the second pressing member is Z-shaped, and the connecting plate is connected to the pushing member; The limiting block extends along the first direction until the connecting plate abuts against the limiting block.

[0010] Optionally, the pushing member includes: A push rod seat, with an air cavity inside and an air inlet provided; A push rod has one end that penetrates the side wall of the push rod seat and is slidably connected to the push rod seat, and the other end of the push rod is connected to the second pressing piece.

[0011] Optionally, a sealing seat communicating with the air cavity is arranged outside the side wall of the ejector rod seat, the ejector rod is slidably arranged in the sealing seat, and a sealing ring is arranged between the sealing seat and the ejector rod.

[0012] Optionally, the test fixture further comprises a limiting member, and the limiting member comprises a limiting screw and a locking nut; The limiting screw is used to have one end threadedly connected to the first pressing piece and the other end rotationally connected to the second pressing piece after the matching piece and the connecting piece are engaged, and can drive the second pressing piece to slide along the first direction.

[0013] Optionally, in a plane perpendicular to the base, both sides of the base are bent upward to form a U-shaped groove, and the bottom of the second pressed member is slidably disposed in the U-shaped groove.

[0014] In a second aspect, the embodiment of the present application provides a testing method based on the test tool, including: The mating piece is detachably connected to the first pressing piece, and the connecting piece is detachably connected to the second pressing piece; the separation joint to be tested includes the mating piece and the connecting piece; the test fixture includes a base and the first pressing piece, the second pressing piece and a pushing piece distributed along a first direction parallel to the length of the base; Using the pushing member to drive the second pressing member, so that the connecting member moves toward the matching member along the first direction; The first pressing member is rotated in a plane parallel to the base to drive the matching member to adjust its angle, so that the matching member is coaxial with the connecting member and engages with it.

[0015] The beneficial technical effects brought about by the technical solution provided in the embodiment of the present application include: the present application pushes the second pressing member and the connecting member to move along the first direction through the pushing member, and due to the limiting effect of the base, the connecting member always keeps the axis unchanged when moving, and the first pressing member limits the horizontal position and height position of the mating member to remain unchanged, so that the mating member can only rotate in a plane parallel to the base, and the axis of the mating member is adjusted to coincide with the axis of the connecting member, so that the coaxiality of the two can be quickly and accurately adjusted when the connecting member and the mating member are engaged; because the test fixture of the present application allows the mating member and the connecting member to be adjusted only in one dimension, the accuracy of the coaxiality adjustment is greatly improved, thereby avoiding deviation from the docking installation angle when the mating member and the connecting member are docked, reducing the probability of scratching the inner wall of the separation joint and causing damage to the separation joint, thereby ensuring the integrity of the inner wall of the separation joint, and being able to improve the yield rate of the separation joint after the docking test.

[0016] Additional aspects and advantages of the present application will be partially given in the following description, which will become apparent from the following description, or will be understood through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which: Figure 1 A schematic diagram of the structure of a test fixture provided in an embodiment of the present application after being connected with a separation joint; Figure 2 A schematic diagram of the structure of a first pressing member, a rotating seat and a second pressing member provided in an embodiment of the present application; Figure 3 A schematic diagram of the structure of a second pressing member and a pushing member provided in an embodiment of the present application; Figure 4 A schematic diagram of the structure of the ejector provided in the embodiment of the present application; Figure 5 A schematic diagram of a front cross-section of a test tool provided in an embodiment of the present application; Figure 6A schematic diagram of the structure of the base provided in the embodiment of the present application; Figure 7 A schematic flow chart of a testing method for a test tool provided in an embodiment of the present application.

[0018] Description of Reference Numerals 100-base; 110-U-shaped groove; 120-fixing screw hole; 130-fixing bolt; 200 - first pressed part; 210 - first pressing plate; 220 - first connecting port; 230 - first positioning screw hole; 300 - second pressed part; 310 - second pressing plate; 311 - second connecting port; 312 - second positioning screw hole; 320-connecting plate; 330-pressure cover; 400-pushing member; 410-rod seat; 411-air cavity; 412-air inlet; 420-thrust rod; 421-threaded hole; 430-seal seat; 440-seal ring; 500-limiting block; 510-rotation hole; 600-rotating seat; 610-auxiliary hole; 620-rotating rod; 700-limiting piece; 710-limiting screw; 720-locking nut; 800-separation connector; 810-matching piece; 8101-main body; 8102-fixing seat; 820-connecting piece; 8201-main body; 8202-fixing seat. DETAILED DESCRIPTION

[0019] The embodiments of the present application are described below in conjunction with the drawings in the present application. It should be understood that the implementation methods described below in conjunction with the drawings are exemplary descriptions for explaining the technical solutions of the embodiments of the present application and do not constitute a limitation on the technical solutions of the embodiments of the present application.

[0020] Those skilled in the art will appreciate that, unless expressly stated, the "said" and "the" used herein may also include plural forms. It should be further understood that the term "including" used in the specification of the present application refers to the presence of the features, steps, operations, elements and / or components, but does not exclude the implementation of other features, steps, elements, components and / or their combinations supported by the technical field. The term "and / or" used herein refers to at least one of the items defined by the term, for example, "A and / or B" can be implemented as "A", or as "B", or as "A and B".

[0021] In order to make the objectives, technical solutions and advantages of the present application clearer, the implementation methods of the present application will be further described in detail below in conjunction with the accompanying drawings.

[0022] In the related art, when performing a life test on a separation joint, it is usually necessary to first install the mating part and the connecting part of the separation joint on a fixture respectively. During installation, the operator manually clamps the outer wall of the separation joint with the fixture. Due to the work done by the built-in compression spring of the separation joint, it is inconvenient for the operator to install and position. After the mating part and the connecting part are installed on the fixture respectively, the operator moves the two fixtures towards each other so that the mating part and the connecting part gradually approach and dock. However, this manual docking work relies on the operator's work experience and professionalism for adjustment, which can easily lead to a deviation in the docking installation angle of the separation joint, thereby scratching its inner wall and causing damage to the separation joint.

[0023] In order to solve the above technical problems, refer to Figure 1-Figure 6 The embodiment of the present application provides a test fixture for testing a separation joint 800 of a launch vehicle, wherein the separation joint 800 includes a matching piece 810 and a connecting piece 820. The test fixture includes: a base 100 and a first pressing piece 200, a second pressing piece 300 and a pushing piece 400 distributed along a first direction parallel to the length of the base 100.

[0024] The second pressing member 300 is slidably disposed on the base 100 for detachable connection with the connecting member 820 .

[0025] The pushing member 400 is connected to the second pressing member 300 and can be extended and retracted along the first direction.

[0026] The first pressing member 200 is rotatably disposed on the top of the base 100 in a plane parallel to the base 100 for detachable connection with the fitting member 810 .

[0027] The first pressing member 200 is used to adjust the angle of the fitting member 810 so as to be coaxial with the connecting member 820 and then engage with it.

[0028] The connecting piece 820 is detachably connected to the second pressing piece 300, and the matching piece 810 is detachably connected to the first pressing piece 200. The present application designs the relative position relationship between the first pressing piece 200 and the second pressing piece 300 so that the first pressing piece 200 and the second pressing piece 300 are located on the same horizontal line. The second pressing piece 300 and the connecting piece 820 are pushed to move along the first direction by the pushing piece 400. Due to the limiting effect of the base 100, the connecting piece 820 always keeps its axis unchanged when moving. The first pressing piece 200 limits the horizontal position and height position of the matching piece 810 to remain unchanged, so that the matching piece 810 can only rotate in a plane parallel to the base 100. The axis of the matching piece 810 is adjusted to coincide with the axis of the connecting piece 820, and the coaxiality of the connecting piece 820 and the matching piece 810 can be quickly and accurately adjusted to engage the two.

[0029] Since the test fixture of the present application allows the mating component 810 and the connecting component 820 to be adjusted in only one dimension, the accuracy of the coaxiality adjustment is greatly improved, thereby avoiding the deviation of the mating installation angle when the mating component 810 and the connecting component 820 are docked, reducing the probability of scratching the inner wall of the separation joint 800 and causing damage to the separation joint 800, and can ensure the integrity of the inner wall of the separation joint 800, and can improve the yield of the separation joint 800 after the docking test.

[0030] Optionally, refer to Figure 1 or Figure 5 The test tool also includes a limit block 500 arranged on the top of the base 100 , a rotatable rotating seat 600 is arranged on the top of the limit block 500 , and the first pressing piece 200 is connected to the top of the rotating seat 600 .

[0031] The limit block 500 is fixed to the base 100 and extends along the first direction. By arranging a rotating seat 600 on the top of the limit block 500, the rotating seat 600 can rotate with the second direction as the central axis, which is conducive to driving the first pressing piece 200 and the matching piece 810 to rotate smoothly. The second direction is a direction perpendicular to the first direction in the vertical plane.

[0032] Optionally, refer to Figure 2 and Figure 5 A rotating rod 620 extending along the second direction is installed at the bottom of the rotating seat 600, and a rotating hole 510 is opened at the top of the limiting block 500. The rotating seat 600 can be rotated by rotating the rotating rod 620 in the rotating hole 510.

[0033] Optionally, refer to Figure 2 and Figure 5 An auxiliary hole 610 extending toward the axis of the rotating seat 600 is formed on the outer peripheral wall thereof.

[0034] The operator holds the outer wall of the rotating seat 600 to drive the rotating seat 600 and the first pressing piece 200 to rotate in the second direction, so that the matching piece 810 can rotate in a plane parallel to the base 100. When the friction between the operator's hand and the outer wall of the rotating seat 600 is not enough to drive the rotating seat 600 to rotate quickly, an auxiliary rod is inserted into the auxiliary hole 610 to facilitate the smooth rotation of the rotating seat 600, the first pressing piece 200 and the matching piece 810, thereby quickly adjusting the matching piece 810 to be coaxial with the connecting piece 820.

[0035] Reference Figure 2-Figure 5 In an optional embodiment of the present application, the first pressing member 200 includes a first pressing plate 210 connected to the rotating seat 600, and a first connecting port 220 is opened on the first pressing plate 210. The main body 8101 of the fitting member 810 is located on the inner side of the first pressing plate 210, and the end of the fitting member 810 passes through the first connecting port 220. The fixed seat 8102 of the fitting member 810 is fixed on the outer side of the first pressing plate 210.

[0036] The second pressing member 300 includes a second pressing plate 310 , which is provided with a second connecting port 311 . The main body 8201 of the connecting member 820 is located on the inner side of the second pressing plate 310 , the end of the connecting member 820 passes through the second connecting port 311 , and the fixing seat 8202 of the connecting member 820 is fixed on the outer side of the second pressing plate 310 .

[0037] The axes of the first connection port 220 and the second connection port 311 are in the same horizontal plane.

[0038] Optionally, the inner side of the first pressing plate 210 refers to a side of the first pressing plate 210 pointing toward the second pressing member 300 along the first direction.

[0039] The inner side of the second pressing plate 310 refers to a side of the second pressing plate 310 directed toward the first pressing member 200 along the first direction.

[0040] Optionally, the inner side of the first pressing plate 210 and the inner side of the second pressing plate 310 may be understood to include a spatial position between the first pressing plate 210 and the second pressing plate 310 along the first direction.

[0041] The detachable connection method of the matching piece 810 and the first pressing plate 210 is consistent with the detachable connection method of the connecting piece 820 and the second pressing plate 310. First positioning screw holes 230 for fixing are provided at the four corners of the first pressing plate 210, and second positioning screw holes 312 for fixing are provided at the four corners of the second pressing plate 310. This application takes the installation method of the matching piece 810 and the first pressing plate 210 as an example for description.

[0042] Reference Figure 1 and Figure 2During installation, the operator holds the fixing seat 8202 of the fitting 810 and aligns the end of the fitting 810 with the first docking port 220, so that the end of the fitting 810 and the main body 8101 pass through the first docking port 220 in sequence, until the fixing seat 8102 of the fitting 810 abuts against the outer side wall of the first pressing plate 210, at which time the main body 8101 and the end of the fitting 810 are located on the inner side of the first pressing plate 210. Then, bolts and other fixing parts are used to fix the four corners of the first pressing plate 210 and the fixing seat 8102 of the fitting 810 to complete the detachable connection between the fitting 810 and the first pressing plate 210. The installation method of the present application does not need to clamp the outer side wall of the separation joint 800, which is more convenient during installation.

[0043] In addition, it should be noted that the inner side of the first pressing plate 210 is the side facing the second pressing plate 310, and the outer side of the first pressing plate 210 is the side facing away from the second pressing plate 310. The inner side and the outer side of the second pressing plate 310 are distinguished in the same way.

[0044] Since the axes of the first connection port 220 and the second connection port 311 are located in the same horizontal plane, when the fitting 810 and the connecting member 820 are installed on the test fixture of the present application, it can be ensured that the axes of the fitting 810 and the connecting member 820 are also located in the same horizontal plane. Since the axis of the connecting member 820 remains unchanged, the fitting 810 can be rotated only in the horizontal plane, and the axis of the fitting 810 can be adjusted until it coincides with the axis of the connecting member 820, so as to facilitate the precise adjustment of the coaxiality of the fitting 810 and the connecting member 820, and reduce the probability of scratching the inner wall of the separation joint 800 and causing damage to the separation joint 800.

[0045] Optionally, refer to Figure 1-Figure 3 as well as Figure 5 The second pressing member 300 further includes a connecting plate 320 connected below the second pressing plate 310 and away from the first pressing plate 210. The second pressing member 300 is Z-shaped, and the connecting plate 320 is connected to the pushing member 400. The limiting block 500 extends along the first direction until the connecting plate 320 abuts against the limiting block 500.

[0046] When the pushing member 400 pushes the first pressing member 200 and the connecting member 820 to move along the first direction, when the connecting member 820 moves into place, that is, after the connecting member 820 engages with the mating member 810, the connecting plate 320 just abuts against the limit block 500, limiting the displacement of the connecting plate 320 and the connecting member 820, avoiding excessive displacement of the pushing member 400, resulting in damage to the separation joint 800 due to excessive squeezing of the connecting member 820 and the mating member 810.

[0047] Optionally, refer to Figure 3-Figure 5The pusher 400 includes a push rod seat 410 and a push rod 420. The push rod seat 410 is provided with an air cavity 411 and an air inlet 412. One end of the push rod 420 penetrates the side wall of the push rod seat 410 and is slidably connected to the push rod seat 410, and the other end of the push rod 420 is connected to the second pressing member 300.

[0048] The air inlet 412 is used for connecting to an external air source. By continuously introducing gas into the air cavity 411, the push rod 420 is pushed outward under the action of the air pressure in the air cavity 411, thereby driving the second pressing member 300 and the connecting member 820 to gradually move toward the matching member 810. This application takes introducing nitrogen into the air cavity 411 as an example.

[0049] The gas drive method is relatively slow and gentle, which prevents the connector 820 from moving too fast, thereby preventing the mating component 810 from engaging with the connector 820 without enough time to adjust the axial angle, thereby causing the inner wall of the separation joint 800 to be scratched.

[0050] Optionally, refer to Figure 3 and Figure 4 A threaded hole 421 is provided at the other end of the push rod 420, and the end of the push rod 420 away from the push rod seat 410 passes through the mounting hole on the connecting plate 320. A pressure cover 330 is provided on the side of the connecting plate 320 away from the push rod seat 410, and the push rod 420 and the connecting plate 320 are detachably connected through the pressure cover 330 and the locking bolt.

[0051] Optionally, refer to Figure 3 and Figure 4 A sealing seat 430 communicating with the air cavity 411 is disposed outside the side wall of the ejector seat 410 , the ejector 420 is slidably disposed in the sealing seat 430 , and a sealing ring 440 is disposed between the sealing seat 430 and the ejector 420 .

[0052] A sealing ring 440 is designed between the push rod 420 and the sealing seat 430 to improve the sealing performance between the push rod 420 and the push rod seat 410, reduce leakage during gas injection, and improve the driving efficiency of the pusher 400.

[0053] Optionally, refer to Figure 3 The push rod seat 410 is cylindrical, the main body of the push rod 420 is designed as a cylinder that matches the inner diameter of the push rod seat 410, and the end of the push rod 420 is designed as a cuboid, so as to avoid excessive contraction of the push rod 420 and ensure the normal contraction of the pusher 400. Figure 4 The top rod 420 is designed as a cylinder as a whole.

[0054] Optionally, refer to Figure 1 The test tool of the present application further includes a limiter 700 . The limiter 700 includes a limit screw 710 and a locking nut 720 .

[0055] The limiting screw 710 is used to be threadedly connected to the first pressing member 200 at one end and rotatably connected to the second pressing member 300 at the other end after the matching member 810 and the connecting member 820 are engaged, and can drive the second pressing member 300 to slide along the first direction.

[0056] Optionally, the limiting screw 710 connects the first pressing plate 210 and the second pressing plate 310 through the first positioning screw hole 230 on the first pressing plate 210 and the second positioning screw hole 312 on the second pressing plate 310 .

[0057] After the separation joint 800 is successfully joined, it is necessary to test whether the separation joint 800 can be separated smoothly after long-term joining. Therefore, it is necessary to limit the positions of the connection member 820 and the matching member 810 to avoid accidental contact or separation of the connection member 820 from the matching member 810 under the action of other external forces. Therefore, by connecting the limiting screw 710 between the first pressing member 200 and the second pressing member 300, and installing the locking nut 720 at the end of the limiting screw 710, the locking nut 720 is abutted against the outer side of the first pressing plate 210, thereby limiting the rotation of the first pressing plate 210 and the sliding of the second pressing plate 310.

[0058] After the connection piece 820 and the matching piece 810 are engaged for a set time, the locking nut 720 is loosened, and the limiting screw 710 is rotated so that the limiting screw 710 gradually pushes the second pressing piece 300 to slide along the first direction, so that the connection piece 820 is separated from the matching piece 810. In addition, due to the limiting effect of the limiting screw 710, when the connection piece 820 and the matching piece 810 are separated, the matching piece 810 is prevented from rotating under the action of an external force, thereby causing the axis of the matching piece 810 to deviate from the axis of the connection piece 820, thereby reducing the probability of deviation from the docking installation angle during the subsequent separation joint 800 engagement test, ensuring the integrity of the inner wall of the separation joint 800, and improving the yield rate of the separation joint 800 after the docking test.

[0059] Optionally, the limit screws 710 are arranged at at least two of the four corners of the first pressure plate 210 and the second pressure plate 310. In the present application, two limit screws 710 are provided and arranged diagonally to ensure that the force at each position of the connecting member 820 and the matching member 810 is uniform when separated, and to ensure that the matching member 810 maintains an unchanged axis when the connecting member 820 is separated, so as to facilitate the subsequent separation joint 800 connection test.

[0060] Optionally, refer to Figure 5 and Figure 6 In a plane perpendicular to the base 100 , both sides of the base 100 are bent upward to form a U-shaped groove 110 , and the bottom of the second pressed piece 300 is slidably disposed in the U-shaped groove 110 .

[0061] The push rod seat 410 and the limit block 500 are both fixed in the U-shaped groove 110. Optionally, the push rod seat 410 and the limit block 500 are both fixed in the base 100 by fixing bolts 130, and a plurality of fixing screw holes 120 are opened on the bottom surface of the base 100.

[0062] By forming a U-shaped groove 110 inside the base 100, the bottom of the second pressing piece 300 is slidably set in the U-shaped groove 110, thereby limiting the sliding of the second pressing piece 300 along the base 100, ensuring that the axis of the second pressing piece 300 and the connecting piece 820 is always parallel to the first direction when moving toward the matching piece 810, avoiding axial deflection of the connecting piece 820 during movement, and facilitating precise docking of the connecting piece 820 and the matching piece 810.

[0063] Reference Figure 7 The present application also provides a test method based on the above test fixture. It includes steps S101-S103: S101: The fitting member 810 is detachably connected to the first pressing member 200, and the connecting member 820 is detachably connected to the second pressing member 300. The separation joint 800 to be tested includes the fitting member 810 and the connecting member 820; the test tool includes a base 100 and a first pressing member 200, a second pressing member 300 and a pushing member 400 distributed along a first direction parallel to the length of the base 100.

[0064] Reference Figure 1 , the detachable connection method of the fitting 810 and the first pressing member 200 and the detachable connection method of the connecting member 820 and the second pressing member 300 are consistent. This application takes the installation method of the fitting 810 and the first pressing plate 210 as an example for explanation. During installation, the operator holds the fixed seat 8102 of the fitting 810, aligns the end of the fitting 810 with the first docking port 220, so that the end and the main body 8101 of the fitting 810 pass through the first docking port 220 in sequence, until the fixed seat 8102 of the fitting 810 abuts against the outer wall of the first pressing plate 210, at which time the main body 8101 and the end of the fitting 810 are located on the inner side of the first pressing plate 210. Then, bolts and other fixing parts are used to fix the four corners of the first pressing plate 210 and the fixed seat 8102 of the fitting 810 to complete the detachable connection between the fitting 810 and the first pressing plate 210. The fixing method of the present application does not need to clamp the outer side wall of the separation connector 800, which is more convenient during installation.

[0065] S102 : Using the pushing member 400 to drive the second pressing member 300 , the connecting member 820 moves toward the matching member 810 along the first direction. Reference Figure 3-Figure 5During the test, the air inlet 412 is connected to the external air source, and gas is continuously introduced into the push rod seat 410. Under the action of the air pressure in the air cavity 411, the push rod 420 is pushed outward, thereby driving the second pressing piece 300 and the connecting piece 820 to gradually move toward the matching piece 810.

[0066] A limiting block 500 is disposed on the top of the base 100 . When the second pressing member 300 abuts against the limiting block 500 , the connecting member 820 cannot be moved by the thrust of the ejector rod 420 , thereby limiting the connecting member 820 .

[0067] S103: Rotate the first pressing member 200 in a plane parallel to the base 100 to drive the fitting member 810 to adjust the axial angle, so that the fitting member 810 and the connecting member 820 are coaxial and engaged.

[0068] Reference Figure 5 Optionally, the operator can hold the outer wall of the rotating seat 600 with one hand and use the auxiliary rod with the other hand to insert the auxiliary rod into the auxiliary hole 610 of the outer wall of the rotating seat 600 to assist in rotating the rotating seat 600 until the matching piece 810 and the connecting piece 820 are adjusted to be coaxial, and then the connecting piece 820 is engaged with the matching piece 810.

[0069] Reference Figure 1 Optionally, after the connection piece 820 is engaged with the matching piece 810, the limiting screw 710 is passed through the preset limiting holes on the first pressing piece 200 and the second pressing piece 300, and the locking nut 720 is used to lock the end of the limiting screw 710 and make the locking nut 720 abut against the outer side of the second pressing piece 300. The movement of the connection piece 820 and the rotation of the matching piece 810 are restricted, so as to test whether the separation joint 800 can be separated smoothly after long-term engagement.

[0070] The beneficial technical effects brought by the technical solution provided by the embodiment of the present application include: the second pressing member 300 allows the connecting member 820 to move only in the first direction, and the axis is always kept unchanged during the movement, and the first pressing member 200 allows the matching member 810 to rotate only in a plane parallel to the base 100, so as to quickly and accurately adjust the matching member 810 and the connecting member 820 to be coaxial. The test fixture of the present application allows the matching member 810 and the connecting member 820 to be adjusted only in one dimension, greatly improving the accuracy of the coaxiality adjustment, thereby avoiding deviation from the docking installation angle when the matching member 810 and the connecting member 820 are docked, ensuring the integrity of the inner wall of the separation joint 800, and being able to improve the yield rate of the separation joint 800 after the docking test.

[0071] By opening an auxiliary hole 610 extending toward the axis of the rotating seat 600 on the outer peripheral wall, the auxiliary plate can assist the rotating seat 600 to drive the first pressing piece 200 and the matching piece 810 to rotate, so as to quickly adjust the axial angle of the matching piece 810.

[0072] The fixing seat 8101 of the fitting 810 or the fixing seat 8202 of the connecting member 820 is fixed to the four corners of the first pressing member 200 or the second pressing member 300 by bolts, respectively, so as to realize the quick installation of the fitting 810 and the connecting member 820. Since this installation method does not need to clamp the outer side wall of the separation joint 800, it is more convenient during installation.

[0073] A limit block 500 extending along the first direction is set on the top of the base 100, and the shape of the second pressing member 300 is designed to be Z-shaped. The distance between the limit block 500 and the second pressing member 300 is designed so that when the connecting member 820 is engaged with the mating member 810, the second pressing member 300 just abuts against the limit block 500, limiting the displacement of the connecting plate 320 and the connecting member 820, avoiding excessive displacement of the pushing member 400, and causing damage to the separation joint 800 due to excessive squeezing of the connecting member 820 and the mating member 810.

[0074] In the description of the present application, the directions or positional relationships indicated by words such as "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" are based on the exemplary directions or positional relationships shown in the accompanying drawings. They are for the convenience of describing or simplifying the description of the embodiments of the present application, and do not indicate or imply that the referred device or component must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be understood as limitations on the present application.

[0075] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0076] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0077] In the description of this specification, specific features, structures, materials or characteristics may be combined in an appropriate manner in any one or more embodiments or examples.

[0078] The above is only a partial implementation method of the present application. It should be pointed out that for ordinary technicians in this technical field, without departing from the technical concept of the scheme of the present application, other similar implementation methods based on the technical ideas of the present application are also within the protection scope of the embodiments of the present application.

Claims

1. A test tool, characterized in that: A separation joint for testing a launch vehicle, wherein the separation joint comprises a matching piece and a connecting piece, and the test fixture comprises a base and a first pressing piece, a second pressing piece and a pushing piece distributed along a first direction parallel to the length of the base; The second pressing member is slidably disposed on the base and is used for detachably connecting with the connecting member; The pushing member is connected to the second pressing member and can be extended and retracted along the first direction; The first pressing member is rotatably arranged on the top of the base in a plane parallel to the base, and is used for detachably connecting with the matching member; The first pressing member is used to adjust the angle of the matching member to be coaxial with the connecting member and then engage with it.

2. The test tool according to claim 1, characterized in that: It also includes a limit block arranged on the top of the base, a rotatable rotating seat is arranged on the top of the limit block, and the first pressing member is connected to the top of the rotating seat.

3. The test tool according to claim 2, characterized in that: An auxiliary hole extending toward the axis of the rotating seat is provided on the outer peripheral wall of the rotating seat.

4. The test tool according to claim 2, characterized in that: Include at least one of the following: The first pressing member includes a first pressing plate connected to the rotating seat, a first connecting port is formed on the first pressing plate, a main body of the matching member is located inside the first pressing plate, an end of the matching member passes through the first connecting port, and a fixing seat of the matching member is fixed on the outside of the first pressing plate; The second pressing member includes a second pressing plate, a second connecting port is formed on the second pressing plate, the main body of the connecting member is located inside the second pressing plate, the end of the connecting member passes through the second connecting port, and the fixing seat of the connecting member is fixed on the outside of the second pressing plate; The axes of the first docking port and the second docking port are in the same horizontal plane.

5. The test tool according to claim 4, characterized in that: The second pressing member further includes a connecting plate connected below the second pressing plate and away from one side of the first pressing plate, the second pressing member is Z-shaped, and the connecting plate is connected to the pushing member; The limiting block extends along the first direction until the connecting plate abuts against the limiting block.

6. The test fixture according to claim 1, characterized in that: The pusher comprises: A push rod seat, with an air cavity inside and an air inlet provided; A push rod has one end that penetrates through the side wall of the push rod seat and is slidably connected to the push rod seat, and the other end of the push rod is connected to the second pressing piece.

7. The test tool according to claim 6, characterized in that: A sealing seat communicating with the air cavity is arranged outside the side wall of the ejector seat, the ejector rod is slidably arranged in the sealing seat, and a sealing ring is arranged between the sealing seat and the ejector rod.

8. The test fixture according to claim 1, characterized in that: It also includes a limiting member, which includes a limiting screw and a locking nut; The limiting screw is used to have one end threadedly connected to the first pressing piece and the other end rotationally connected to the second pressing piece after the matching piece and the connecting piece are engaged, and can drive the second pressing piece to slide along the first direction.

9. The test fixture according to claim 1, characterized in that: In a plane perpendicular to the base, two sides of the base are bent upward to form a U-shaped groove, and the bottom of the second pressed member is slidably arranged in the U-shaped groove.

10. A testing method based on the test tool according to any one of claims 1 to 9, characterized in that: include: The mating piece is detachably connected to the first pressing piece, and the connecting piece is detachably connected to the second pressing piece; the separation joint to be tested includes the mating piece and the connecting piece; the test fixture includes a base and the first pressing piece, the second pressing piece and a pushing piece distributed along a first direction parallel to the length of the base; Using the pushing member to drive the second pressing member, so that the connecting member moves toward the matching member along the first direction; The first pressing member is rotated in a plane parallel to the base to drive the matching member to adjust the axial angle, so that the matching member is coaxial with the connecting member and engages with it.

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