Electromagnetic simulation pin pulling device and centrifugal test method thereof

Abstract

The invention discloses an electromagnetic simulation pin pulling device and a centrifugal test method thereof.The electromagnetic simulation pin pulling device comprises a mounting base, a simulation pin puller and an electromagnetic pin pulling mechanism, and the simulation pin puller comprises a pin puller shell provided with a first through hole; the movable pin penetrates through the first through hole, and the second end of the movable pin is inserted from the first end of the first through hole and extends out of the second end of the first through hole so as to be connected with the pull rod; the first elastic structure is arranged in the first through hole, and when the movable pin moves in the axial direction of the first through hole, the first elastic structure can stretch out and draw back; the electromagnetic pin pulling mechanism comprises a deflector rod and a driving device, the driving device is connected with the mounting base, the deflector rod is hinged to the mounting base, the driving device can drive the deflector rod to rotate around the hinged joint, and the deflector rod can drive the pull rod to be away from the tested product when rotating so as to drive the movable pin connected with the pull rod to be separated from the tested product. The device has the advantages that the device can be repeatedly used, is suitable for batch production and testing, and contributes to saving a large amount of test cost.

Description

Technical Field

[0001] The invention relates to the technical field of pin pulling devices, and in particular to an electromagnetic simulation pin pulling device which realizes a pin pulling and unlocking function in a test, and is used to replace an explosive device pin puller for repeated testing in a test. Background Art

[0002] Existing pyrotechnic pin pullers have the characteristics of small size, fast response, and large pin pulling force, and are widely used in the unlocking mechanisms of spacecraft and weapons and equipment. The unlocking mechanism needs to undergo multiple ground tests during the production process to test the motion parameters of the mechanism and verify the reliability of the entire mechanism. Generally, dozens of tests are required during the manufacturing cycle. The pyrotechnic pin puller is used as a limit device in the unlocking mechanism to limit the movement of the subsequent mechanism. During the test, the pin must be pulled out before the motion test of the subsequent mechanism can be carried out. However, pyrotechnic pin pullers are usually expensive and can only be used once. The repeated use of batch products requires extremely high costs. At the same time, after using the pyrotechnic pin puller, a large force will be applied to the adjacent parts at the contact position with the tested product, causing it to deform and cannot continue to be used. Therefore, the current pyrotechnic pin puller cannot meet the needs of repeated ground testing, resulting in the inability to fully test the unlocking mechanism on the ground.

[0003] It should be understood that the above statements merely provide background technology related to the present invention and do not necessarily constitute prior art. Summary of the invention

[0004] Based on the above technical problems, the purpose of the present invention is to provide an electromagnetic simulation pin pulling device and a centrifugal test method thereof, wherein the electromagnetic simulation pin pulling device combines a movable pin, a pull rod, a first elastic structure, a driving device and a lever, and the driving device drives the lever to rotate around the hinge connection position between the lever and the mounting base, thereby driving the pull rod and the movable pin to move in the direction of pin pulling, that is, to move away from the product under test, to complete the pin pulling action. The device will not cause damage to other peripheral components during the pin pulling test, is reusable, is suitable for batch production testing, and helps save a lot of test costs. At the same time, it also has the advantages of simple structure, small size, high response, etc., and is relatively easy to install and operate.

[0005] In order to achieve the above object, the present invention is implemented by the following technical solutions:

[0006] An electromagnetic simulated pin pulling device, comprising a mounting base, a simulated pin pulling device and an electromagnetic pin pulling mechanism, wherein a product to be tested is mounted on the mounting base, wherein the simulated pin pulling device comprises:

[0007] A pin puller housing is provided with a first through hole, wherein the diameter of the second end of the first through hole is smaller than the diameter of the first end thereof;

[0008] A movable pin is arranged to penetrate the first through hole and can move axially along the first through hole, a first end of the movable pin can be inserted into the product to be tested, and a second end of the movable pin is inserted from the first end of the first through hole and extends from the second end of the first through hole so as to be connected with the pull rod;

[0009] a first elastic structure, which is disposed in the first through hole, wherein the diameter or maximum width of the first elastic structure is smaller than the diameter of the second end of the first through hole, and the first elastic structure can be extended and retracted when the movable pin moves axially along the first through hole;

[0010] The electromagnetic pin pulling mechanism includes a lever and a driving device connected thereto, wherein the driving device is connected to the mounting base, and the lever is also hinged to the mounting base, and the driving device can drive the lever to rotate around the hinge connection position, and when the lever rotates, its first end can drive the pull rod away from the product under test, thereby driving the movable pin connected to the pull rod to detach from the product under test.

[0011] Optionally, the driving device is an electromagnet, which comprises:

[0012] A housing connected to the mounting base;

[0013] A coil disposed inside the housing;

[0014] An iron core is arranged to penetrate the shell, and the end of the iron core extending out of the first end of the shell is connected to the lever; the first end of the iron core is also sleeved with a second elastic structure, one side of the second elastic structure is the shell, and the other side is the connection between the iron core and the lever; the second end of the iron core extending out of the shell is provided with a threaded structure so that a stop nut is threadedly connected to the second end of the iron core, and the threaded connection between the stop nut and the iron core is adjustable;

[0015] Turning on the power supply of the electromagnet can move the iron core and drive the lever to rotate, so that the lever pushes the pull rod and the movable pin to separate from the product being tested.

[0016] Optionally, the second elastic structure is a spring structure.

[0017] Optionally, the first end of the lever comprises a toggle structure, and when the lever rotates around the hinge connection position, the toggle structure can toggle the pull rod away from the product to be tested;

[0018] The second end of the lever is provided with a waist-shaped hole, and the first end of the iron core is connected to the lever at the waist-shaped hole through a connecting pin;

[0019] The shifting rod is also provided with a connecting hole, and the connecting hole is located between the shifting structure and the waist-shaped hole. The shifting rod is connected to the mounting base at the connecting hole through a mechanical connecting device.

[0020] Optionally, the toggle structure of the toggle lever is a U-shaped groove, the pull rod comprises a head and a rod portion connected thereto, the rod portion is connected to the movable pin, and the diameter or maximum width of the head is greater than the diameter or maximum width of the rod portion and smaller than the groove width of the U-shaped groove;

[0021] In the static state of installation, the rod portion of the pull rod is inserted into the U-shaped groove;

[0022] When the driving device drives the lever to rotate, the lever can push the head away from the product to be tested.

[0023] Optionally, a hinge seat is provided on the mounting base, and the shifting rod is hingedly connected to the mounting base through the hinge seat, so that the shifting rod can rotate around the connection between the two.

[0024] Optionally, the movable pin includes a first structure, a second structure and a third structure connected in sequence, the first end of the movable pin is the end of the first structure, the second end of the movable pin is the end of the third structure, the maximum width or diameter of the third structure is adapted to the diameter of the second end of the first through hole, and the maximum width or diameter of the second structure is greater than the diameter of the second end of the first through hole.

[0025] Optionally, the first elastic structure is arranged in the first through hole around the third structure of the movable pin, and the first elastic structure is located between the second end of the first through hole and the second structure. When the second structure moves axially along the first through hole, the first elastic structure can be expanded and contracted.

[0026] Optionally, the pull rod is threadedly connected to the third structure;

[0027] The first structure, the second structure and the third structure are all cylindrical structures, and the second structure and the third structure have different diameters;

[0028] The first elastic structure is a spring structure.

[0029] Optionally, a centrifugal test method of the aforementioned electromagnetic simulation pin pulling device comprises:

[0030] Install the electromagnetic pin pulling mechanism on the centrifuge, install the simulated pin pulling device in the mounting hole of the product to be tested, and then install the product to be tested on the mounting base;

[0031] Connect the power supply path of the drive device as well as various test instruments and test cables;

[0032] Start the centrifuge, and after reaching the set acceleration, turn on the power supply of the driving device, so that the driving device drives the lever to rotate, and then drives the pull rod and the movable pin to separate from the product to be tested, so as to complete the pin pulling action in the centrifugal environment;

[0033] Switch off the power supply to the drive.

[0034] Compared with the prior art, the present invention has the following advantages:

[0035] In an electromagnetic simulation pin pulling device and centrifugal test method thereof of the present invention, the electromagnetic simulation pin pulling device combines a movable pin, a pull rod, a first elastic structure, a driving device and a lever, and the driving device drives the lever to rotate around the hinge connection position between the lever and the mounting base, thereby driving the pull rod and the movable pin to move in the pin pulling direction, that is, to move away from the product under test, to complete the pin pulling action. The device will not cause damage to other peripheral components during the pin pulling test, can be reused, is suitable for batch production testing, and helps save a lot of test costs. At the same time, it also has the advantages of simple structure, small size, high response, etc., and is relatively convenient to install and operate.

[0036] Furthermore, in the electromagnetic simulation pin pulling device of the present invention, an electromagnet is used to provide pin pulling power, and it does not need to be powered on for a long time, and it is highly safe, responsive, and provides a large pin pulling force. At the same time, the device also amplifies the pin pulling force through a lever, and has high reliability. On the other hand, the electromagnetic simulation pin pulling device is less affected by the environment, and the pulling direction can be made perpendicular to the centrifugal force direction by adjusting the posture of the electromagnet, and can be used for centrifugal tests. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the technical solution of the present invention, the following briefly introduces the drawings required for the description. Obviously, the drawings described below are an embodiment of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work:

[0038] Figure 1 It is a structural schematic diagram of an electromagnetic simulation pin pulling device of the present invention;

[0039] Figure 2 It is a structural schematic diagram of a simulated pin puller of the present invention;

[0040] Figure 3 It is a structural schematic diagram of an electromagnetic pin pulling mechanism of the present invention;

[0041] Figure 4a It is a three-dimensional structural schematic diagram of a lever of the present invention;

[0042] Figure 4b It is a front view schematic diagram of a lever of the present invention;

[0043] Figure 4c A schematic side view of a lever of the present invention;

[0044] Figure 5a It is a front view schematic diagram of an electromagnet of the present invention;

[0045] Figure 5b The figure is a top view schematic diagram of an electromagnet of the present invention.

[0046] Explanation of symbols

[0047] 1 Electromagnetic puller mechanism

[0048] 2 Simulated pin puller

[0049] 3 Tested products

[0050] 4 Connecting pins

[0051] 5 Lever

[0052] 6 Hinge seat

[0053] 7 Drive device

[0054] 8 Mounting base

[0055] 9 Tie rod

[0056] 10 Pin puller housing

[0057] 11. First elastic structure

[0058] 12 Activity Pins

[0059] 51 Toggle structure

[0060] 52 waist hole

[0061] 53 Connection hole

[0062] 71 Housing

[0063] 72 Iron Core

[0064] 73 Second elastic structure

[0065] 74 stop nut DETAILED DESCRIPTION

[0066] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are 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 creative work are within the scope of protection of the present invention.

[0067] It should be noted that, in this article, the terms "include", "comprises", "has" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or terminal device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or terminal device. In the absence of further restrictions, the elements defined by the sentence "includes..." or "comprising..." do not exclude the existence of other elements in the process, method, article or terminal device including the elements.

[0068] It should be noted that the drawings are all in very simplified form and use inaccurate ratios, and are only used to conveniently and clearly assist in explaining the embodiments of the present invention.

[0069] like Figures 1 to 3 As shown, an electromagnetic simulation pin pulling device of the present invention comprises a mounting base 8, a simulation pin pulling device 2 and an electromagnetic pin pulling mechanism 1. During testing, the product 3 to be tested is mounted and fixed on the mounting base 8. The simulation pin pulling device 2 comprises: a pin pulling device housing 10, a movable pin 12 and a first elastic structure 11. The pin pulling device housing 10 is provided with a first through hole, and the diameter of the second end of the first through hole is smaller than the diameter of the first end thereof; the movable pin 12 is arranged through the first through hole and can move axially along the first through hole, the first end of the movable pin 12 can be inserted into the test interface of the product 3 to be tested, the second end of the movable pin 12 is inserted from the first end of the first through hole and extends from the second end of the first through hole so as to be connected with the pull rod 9; the first elastic structure 11 is arranged in the first through hole, the diameter or maximum width of the first elastic structure 11 is smaller than the diameter of the second end of the first through hole, and the movable pin 12 can cause the first elastic structure 11 to expand and contract when it moves axially along the first through hole. The electromagnetic pin pulling mechanism 1 includes a lever 5 and a driving device 7 connected thereto, wherein the driving device 7 is connected to the mounting base 8, and the lever 5 is also hinged to the mounting base. The driving device 7 can drive the lever 5 to rotate around the hinge connection position. When the lever 5 rotates, its first end can drive the pull rod 9 away from the product 3 under test, thereby driving the movable pin 12 connected to the pull rod 9 to detach from the product 3 under test.

[0070] Based on the above structure, when testing the product 3 under test, the simulated pin puller 2 is installed on the mounting hole of the product 3 under test to replace the pyrotechnic pin puller for repeated pin pulling test, and the product 3 under test is installed on the mounting base 8. During the test, the front end of the movable pin 12 is inserted into the product 3 under test, thereby preventing the internal turntable of the product 3 under test from rotating. The driving device 7 can drive the lever 5 to rotate around the hinge connection position between it and the mounting base 8, thereby driving the pull rod 9 and the movable pin 12 to move in the direction of pin pulling, that is, to move away from the product 3 under test, to complete the pin pulling action. The electromagnetic simulated pin pulling device combines the movable pin 12, the first elastic structure 11 and the lever 5, etc., and will not cause damage to other peripheral components during the pin pulling test. It can be reused, suitable for mass production testing, and helps to save a lot of test costs. At the same time, it also has the advantages of simple structure, small size, high response, etc., and is relatively convenient to install and operate.

[0071] The simulated pin puller 2 and the electromagnetic pin puller mechanism 1 of the present invention are both modularly designed, and can be adaptively adjusted according to the product structure, and are thus widely used in the testing of different products (such as unlocking mechanisms of aerospace products and weapons and equipment), with good use effects and suitable for batch testing. In actual use, the mechanical installation interface between the simulated pin puller 2 and the mounting base and the tested product 3 can all adopt the original mechanical installation interface specifications of the product (for example, the structural shape of the movable pin 12 is compatible with the mounting hole of the tested product 3), so that the installation of the electromagnetic simulated pin puller and the tested product 3 is more convenient, and the other states of the tested product 3 are not changed, thereby ensuring the authenticity of the test. On the other hand, in actual use, the size of the simulated pin puller 2 can be the same as that of the existing pyrotechnic pin puller, that is, the installation size of the pin puller housing 10 is kept consistent with the installation size of the pyrotechnic pin puller, the size of the part of the movable pin 12 extending out of the pin puller housing 10 is consistent with the external size of the pin extending out of the pyrotechnic pin puller, and the mechanical installation interface of the simulated pin puller 2 is consistent with the pyrotechnic pin puller to be replaced, and then when in use, the simulated pin puller 2 is replaced by the pyrotechnic pin puller in the original position and installed on the product, so that the simulated pin puller 2 with the same installation size can be used to replace the pyrotechnic pin puller, and a large pin pulling force and a high response pin pulling action can be achieved based on a simple mechanical action, which meets the requirements of small size, high response and large pin pulling force, and will not cause changes to its own components and the test product during the test process, which helps to ensure the authenticity of the test of other mechanisms. Therefore, the simulated pin puller 2 of the present invention can be used to replace the pyrotechnic pin puller in the unlocking mechanism in the centrifugal unlocking test to solve the problem that the pyrotechnic pin puller cannot be reused and realize the repeated testing of the unlocking mechanism on the ground.

[0072] like Figure 2As shown, the movable pin 12 includes a first structure, a second structure and a third structure connected in sequence, the first end of the movable pin 12 is the end of the first structure, the second end of the movable pin 12 is the end of the third structure, the maximum width or diameter of the third structure is adapted to the diameter of the second end of the first through hole, the second structure is located in the first through hole, and the maximum width or diameter of the second structure is greater than the diameter of the second end of the first through hole. The first elastic structure 11 is arranged around the third structure of the movable pin 12 in the first through hole, the first elastic structure 11 is located between the second end of the first through hole and the second structure, and the second structure can cause the first elastic structure 11 to expand and contract when it moves axially along the first through hole.

[0073] Furthermore, in this embodiment, the first structure, the second structure and the third structure are all cylindrical structures, and the diameters of the second structure and the third structure are different. The first elastic structure 11 is a spring structure, equivalent to a restoring spring, which is sleeved on the third structure of the movable pin 12 and is located between the second structure of the movable pin 12 and the bottom surface of the first through hole in the pin puller housing 10, i.e., the second end thereof. Figure 2 As shown, the movable pin 12 of the simulated pin puller 2 can slide axially in the first through hole of the pin puller housing 10. The movable pin 12 passes through the first through hole of the pin puller housing 10 and the restoring spring and is then threadedly connected to the pull rod 9. Moving the pull rod 9 can drive the movable pin 12 to move axially in the first through hole. When there is no external force, the restoring spring pushes the end of the first structure of the movable pin 12 out of the first through hole and keeps it in an extended state.

[0074] like Figure 1 and Figure 3 As shown, the mounting base 8 is provided with a hinge seat 6, and the lever 5 is hingedly connected to the mounting base 8 through the hinge seat 6, so that the lever 5 can rotate around the connection between the two. Figures 4a to 4c As shown in combination, the first end of the lever 5, i.e., the upper part thereof, includes a toggle structure 51. When the lever 5 rotates around the hinge connection position, the toggle structure 51 can toggle the pull rod 9 away from the product 3 under test; a waist-shaped hole 52 is provided at the second end of the lever 5, and the driving device 7 is connected to the lever 5 at the waist-shaped hole 52 through the connecting pin 4; a connecting hole 53 is also provided on the lever 5, and the connecting hole 53 is located between the toggle structure 51 and the waist-shaped hole 52, and the lever 5 is connected to the mounting base 8 at the connecting hole 53 through a mechanical connecting device.

[0075] In this embodiment, the toggle structure 51 of the toggle lever 5 is a U-shaped groove, the pull rod 9 includes a head and a rod connected thereto, the rod is connected to the movable pin 12, the diameter or maximum width of the head is greater than the diameter or maximum width of the rod and less than the groove width of the U-shaped groove, and the diameter or maximum width of the rod is less than the groove width of the U-shaped groove. In the static state of installation (which can be regarded as the U-shaped groove of the toggle lever 5 retracted backward), the rod of the pull rod 9 is inserted into the U-shaped groove, and the two do not contact each other; when the driving device 7 drives the toggle lever 5 to rotate along the hinge seat 6, the U-shaped groove of the toggle lever 5 is pushed forward, the U-shaped groove contacts the head of the pull rod 9 and pushes it outward (outward means the moving direction is the direction away from the product 3 to be tested), so as to push the pull rod 9 away from the product 3 to be tested, thereby driving the movable pin 12 connected to the pull rod 9 to move away from the product 3 to be tested, and completing the pin pulling action.

[0076] On the other hand, in the present invention, the driving device 7 is an electromagnet, such as Figure 3 , Figure 5a and Figure 5b As shown in combination, the electromagnet comprises a housing 71, a coil, an iron core 72, a second elastic structure 73 and a stop nut 74, wherein the housing 71 is connected to the mounting base 8, the coil is arranged inside the housing 71 and around the iron core 72, and the iron core 72 is arranged to penetrate the second through hole of the housing 71, so that the first end of the iron core 72 extending out of the housing 71 is connected to the lever 5. Further, the first end of the iron core 72 is sleeved with a second elastic structure 73, one side of the second elastic structure 73 is the housing 71, and the other side thereof is the connection between the iron core 72 and the lever 5; the second end of the iron core 72 extending out of the housing 71 is provided with a threaded structure, so that the stop nut 74 is threadedly connected to the second end of the iron core 72 to achieve limiting, and the threaded connection position of the stop nut 74 and the iron core 72 is adjustable.

[0077] Based on the above structure, when the electromagnet is not energized, the iron core 72 remains in an extended state under the action of the second elastic structure 73, driving the lower part of the lever 5 to extend outward, the lever 5 to rotate around the hinge seat 6, and the U-shaped groove of the lever 5 remains in a state of retraction toward the product 3 under test. After the power supply of the electromagnet is turned on, the iron core 72 retracts along the axial movement of the second through hole of the shell 71, driving the lever 5 to rotate around the hinge seat 6, so that the U-shaped groove of the lever 5 is pushed outward, and then the head of the pull rod 9 and the movable pin 12 are pushed away from the product 3 under test, thereby completing the pin pulling action. As can be seen from the above, in the electromagnetic simulation pin pulling device of the present invention, an electromagnet is used to provide pin pulling power, and there is no need to continuously apply power, which is very suitable for centrifugal testing environments. At the same time, based on the pin pulling power source, if a larger pin pulling force is required, there is no need to use a larger volume spring, which is suitable for replacing a small volume pyrotechnic pin puller.

[0078] In this embodiment, the first end of the iron core 72 is provided with a slot and a hole structure penetrating the side wall of the slot, the second end of the lever 5 is placed in the slot, and the connecting pin 4 is passed through the hole structure and the waist-shaped hole 52 of the lever 5 to connect the lever 5 with the iron core 72. During use, the connecting pin 4 can slide in the waist-shaped hole 52 of the lever 5, so that the connection between the lever 5 and the iron core 72 will not be stuck due to over-constraint when the lever 5 rotates around the hinge seat 6. In actual use, according to the actual required pin pulling force and the pulling force of the electromagnet to be selected, the force arm of the lever 5 on both sides of the hinge seat 6 is designed to be a suitable ratio, so as to amplify the pin pulling force according to the lever principle and reduce the demand for electromagnetic force. On the other hand, the second elastic structure 73 is a spring structure, which can be regarded as a restoring spring of the iron core 72. The restoring spring is sleeved on the first end of the iron core 72, one end of the restoring spring is connected to the iron core 72, and the other end thereof is in contact with the housing 71. During use, the threaded connection position between the stop nut 74 and the iron core 72 can be adjusted to adjust the length of the portion of the iron core 72 extending out of the housing 71 , thereby adjusting the telescopic stroke of the second elastic structure 73 .

[0079] Furthermore, the present invention also provides a centrifugal test method for the aforementioned electromagnetic simulated pin pulling device, the method comprising: before the test, installing the electromagnetic pin pulling mechanism 1 on the centrifuge, installing the simulated pin pulling device 2 in the mounting hole of the tested product 3, and then installing the tested product 3 on the mounting base 8; connecting the power supply path of the drive device 7 and various test instruments and test cables; starting the centrifuge, and after reaching the set acceleration, connecting the power supply of the drive device 7, so that the drive device 7 drives the lever 5 to rotate, and then drives the pull rod 9 and the movable pin 12 to separate from the tested product 3, so as to complete the pin pulling action in the centrifugal environment; turning off the power supply of the drive device 7. The tested product 3 can continue to perform subsequent tests according to the test requirements; after the test is completed and the centrifuge stops, the simulated pin pulling device 2 and the tested product 3 are removed, and the next set of tested products 3 are replaced to start the next round of tests.

[0080] Optionally, connecting the power supply path of the drive device 7 and various test instruments and test cables includes: connecting the test instruments and power supply to the input end of the centrifuge terminal, and connecting the two power supply lines of the test cable and the electromagnet to the output end of the terminal board on the centrifuge.

[0081] To sum up, in an electromagnetic simulation pin pulling device and centrifugal test method thereof of the present invention, the electromagnetic simulation pin pulling device combines a movable pin 12, a first elastic structure 11 and a lever 5, etc., and will not cause damage to other surrounding components during the pin pulling test. It is reusable and suitable for batch production testing, which helps to save a lot of test costs. At the same time, it also has the advantages of simple structure, small size, high response, etc., and is relatively convenient to install and operate.

[0082] Although the content of the present invention has been described in detail through the above preferred embodiments, it should be appreciated that the above description should not be considered as a limitation of the present invention. After reading the above content, it will be apparent to those skilled in the art that various modifications and substitutions of the present invention will occur. Therefore, the protection scope of the present invention should be limited by the appended claims.

Claims

1. An electromagnetic simulation pin pulling device, It is characterized in that The electromagnetic simulated pin pulling device comprises a mounting base, a simulated pin pulling device and an electromagnetic pin pulling mechanism, and the product to be tested is mounted on the mounting base, wherein the simulated pin pulling device comprises: A pin puller housing is provided with a first through hole, wherein the diameter of the second end of the first through hole is smaller than the diameter of the first end thereof; A movable pin is arranged to penetrate the first through hole and can move axially along the first through hole, a first end of the movable pin can be inserted into the product to be tested, and a second end of the movable pin is inserted from the first end of the first through hole and extends from the second end of the first through hole so as to be connected with the pull rod; a first elastic structure, which is disposed in the first through hole, wherein the diameter or maximum width of the first elastic structure is smaller than the diameter of the second end of the first through hole, and the first elastic structure can be extended and retracted when the movable pin moves axially along the first through hole; The electromagnetic pin pulling mechanism includes a lever and a driving device connected thereto, wherein the driving device is connected to the mounting base, and the lever is also hinged to the mounting base, and the driving device can drive the lever to rotate around the hinge connection position, and when the lever rotates, its first end can drive the pull rod away from the product under test, thereby driving the movable pin connected to the pull rod to detach from the product under test.

2. The electromagnetic simulation pin pulling device according to claim 1, It is characterized in that The driving device is an electromagnet, which comprises: A housing connected to the mounting base; A coil disposed inside the housing; An iron core is arranged to penetrate the shell, and the end of the iron core extending out of the first end of the shell is connected to the lever; the first end of the iron core is also sleeved with a second elastic structure, one side of the second elastic structure is the shell, and the other side is the connection between the iron core and the lever; the second end of the iron core extending out of the shell is provided with a threaded structure so that a stop nut is threadedly connected to the second end of the iron core, and the threaded connection between the stop nut and the iron core is adjustable; Turning on the power supply of the electromagnet can move the iron core and drive the lever to rotate, so that the lever pushes the pull rod and the movable pin to separate from the product being tested.

3. The electromagnetic simulation pin pulling device according to claim 2, It is characterized in that The second elastic structure is a spring structure.

4. The electromagnetic simulation pin pulling device according to claim 2, It is characterized in that The first end of the lever comprises a toggle structure, and when the lever rotates around the hinge connection position, the toggle structure can toggle the pull rod away from the product to be tested; The second end of the lever is provided with a waist-shaped hole, and the first end of the iron core is connected to the lever at the waist-shaped hole through a connecting pin; The shifting rod is also provided with a connecting hole, and the connecting hole is located between the shifting structure and the waist-shaped hole. The shifting rod is connected to the mounting base at the connecting hole through a mechanical connecting device.

5. The electromagnetic simulation pin pulling device according to claim 4, It is characterized in that The toggle structure of the toggle lever is a U-shaped groove, the pull rod comprises a head and a rod portion connected thereto, the rod portion is connected to the movable pin, the diameter or maximum width of the head is greater than the diameter or maximum width of the rod portion and smaller than the groove width of the U-shaped groove; In the static state of installation, the rod portion of the pull rod is inserted into the U-shaped groove; When the driving device drives the lever to rotate, the lever can push the head away from the product to be tested.

6. The electromagnetic simulation pin pulling device according to claim 1, It is characterized in that A hinge seat is arranged on the mounting base, and the shifting rod is hinge-connected with the mounting base through the hinge seat so that the shifting rod can rotate around the connection between the two.

7. The electromagnetic simulation pin pulling device according to claim 1, It is characterized in that The movable pin includes a first structure, a second structure and a third structure connected in sequence, the first end of the movable pin is the end of the first structure, the second end of the movable pin is the end of the third structure, the maximum width or diameter of the third structure is adapted to the diameter of the second end of the first through hole, and the maximum width or diameter of the second structure is greater than the diameter of the second end of the first through hole.

8. The electromagnetic simulation pin pulling device according to claim 7, It is characterized in that The first elastic structure is arranged in the first through hole around the third structure of the movable pin. The first elastic structure is located between the second end of the first through hole and the second structure. When the second structure moves axially along the first through hole, the first elastic structure can be expanded and contracted.

9. The electromagnetic simulation pin pulling device according to claim 7, It is characterized in that The pull rod is threadedly connected to the third structure; The first structure, the second structure and the third structure are all cylindrical structures, and the second structure and the third structure have different diameters; The first elastic structure is a spring structure.

10. A centrifugal test method for the electromagnetic simulation pin pulling device according to any one of claims 1 to 9, It is characterized in that Include: Install the electromagnetic pin pulling mechanism on the centrifuge, install the simulated pin pulling device in the mounting hole of the product to be tested, and then install the product to be tested on the mounting base; Connect the power supply path of the drive device as well as various test instruments and test cables; Start the centrifuge, and after reaching the set acceleration, turn on the power supply of the driving device, so that the driving device drives the lever to rotate, and then drives the pull rod and the movable pin to separate from the product to be tested, so as to complete the pin pulling action in the centrifugal environment; Switch off the power supply to the drive.

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