Separation signal triggering device for satellite ground test

Abstract

The invention relates to a separated signal triggering device for a satellite ground test. The separated signal triggering device comprises a signal switch mounted on a satellite structural plate; a trigger assembly and a stop assembly are mounted on the separation mechanism simulation piece; the triggering assembly has a stroke of moving along a straight line, and has a pre-tightening state and a natural state in the linear moving stroke; when the trigger assembly is in a natural state, the trigger assembly abuts against the signal switch. When the trigger assembly is converted into the pre-tightening state from the natural state, the trigger assembly moves and is separated from the signal switch. The stop assembly is arranged on the motion stroke of the trigger assembly and also has a pre-tightening state and a natural state; when the trigger assembly is in a natural state, pressure is applied to the stop assembly, and the stop assembly is in a pre-tightening state; when the trigger assembly is converted into the pre-tightening state from the natural state, pressure is released, the automatic assembly is converted into the natural state from the pre-tightening state, the trigger assembly is limited, and springback is prevented. According to the invention, multiple repeated tests can be realized.

Description

Technical Field

[0001] The present invention relates to the technical field of spacecraft, and particularly to a separation signal triggering device for satellite ground testing. Background Art

[0002] In the ground testing phase before satellite launch, to ensure the reliability of satellite functions, the satellite needs to be tested multiple times. For important function tests such as solar array deployment tests and satellite model flight tests, the separation signal of the satellite needs to be triggered, that is, it depends on the separation of the separation mechanism simulation part from the satellite to complete.

[0003] Currently, the traditional pyrotechnic separation mechanism simulation part, as a commonly used separation device, belongs to a disposable component and cannot be restored after one separation operation. A brand-new separation mechanism simulation part needs to be replaced for each test, which increases the cost and time cost of satellite ground testing.

[0004] Although the new separation mechanism simulation part based on shape memory alloy has been widely used, due to the irreversible deformation of shape memory alloy under the action of large current for multiple times, generally no more separation tests are carried out; if tests are carried out, there are strict number limitations, and a special power supply provided by the manufacturer must be used for each test. In addition, after each test, the separation mechanism simulation part needs to be sent back to the manufacturer for restoration and assembly, and the process is cumbersome. And after a few tests, additional processing is required, which not only seriously affects the efficiency of satellite ground testing, but also increases the complexity and uncertainty of the testing. Summary of the Invention

[0005] Based on this, it is necessary to provide a separation signal triggering device for satellite ground testing that can achieve repeated testing and has a simple structure to solve the above technical problems.

[0006] A separation signal triggering device for satellite ground testing includes a satellite structural board and a separation mechanism simulation part. A signal switch is installed on the satellite structural board; a triggering component and a stopping component are installed on the separation mechanism simulation part; The triggering component has a linear moving stroke, and has a pre-tightened state and a natural state during the linear moving stroke; when the triggering component is in the natural state, the triggering component abuts against the signal switch and the signal switch is closed; when the triggering component changes from the natural state to the pre-tightened state, the triggering component moves and separates from the signal switch, and the signal switch is turned on; The stop assembly is arranged on the movement stroke of the trigger assembly and also has a pre-tightened state and a natural state; when the trigger assembly is in the natural state, pressure is applied to the stop assembly, and the stop assembly is in the pre-tightened state; when the trigger assembly changes from the natural state to the pre-tightened state, the pressure is released, and the automatic assembly changes from the pre-tightened state to the natural state and limits the trigger assembly to prevent it from rebounding.

[0007] In one embodiment, the trigger assembly includes a trigger part arranged on the separation mechanism simulation part, and a first moving rod and a first elastic part arranged in the trigger part; The trigger part and the separation mechanism simulation part are in clearance fit; A first installation hole is formed in the trigger part, the first elastic part is sleeved on the first moving rod and is placed in the first installation hole together, and the front end face of the first moving rod is mechanically connected in the first installation hole; One end of the first elastic part contacts the inner bottom surface of the first installation hole, and the other end contacts the separation mechanism simulation part; The first elastic part and the first installation hole are in clearance fit, and an abutting block is further arranged on the trigger part; the first moving rod has a linear movement stroke, and the first elastic part has a pre-tightened state and a natural state during the linear movement stroke; When the first elastic part is in the natural state, the abutting block abuts against the signal switch, and the signal switch is closed; when the first elastic part is in the pre-tightened state, the abutting block moves and separates from the signal switch, and the signal switch is opened.

[0008] In one embodiment, a first limiting part is arranged at the rear end of the first moving rod.

[0009] In one embodiment, a pulling rope is arranged on the first moving rod.

[0010] In one embodiment, the first moving rod and the first limiting part are integrally formed.

[0011] In one embodiment, the stop assembly includes a stop mounting seat, and a second moving rod and a second elastic part arranged in the stop mounting seat; The stop mounting seat is mechanically connected to the separation mechanism simulation part and is located on one side of the movement direction of the trigger assembly changing from the natural state to the pre-tightened state; A second installation hole is formed in the stop mounting seat, the second elastic part is sleeved on the second moving rod and is placed in the second installation hole together, and the second moving rod and the stop mounting seat are in clearance fit; When the first elastic member is in its natural state, the rear end face of the second moving rod abuts against the side surface of the first limiting member, and a pressure is applied to the second elastic member through the first limiting member. When the first elastic member is in a pre-tightened state, the rear end face of the second moving rod abuts against the side surface of the first moving rod, and the first elastic member is prevented from rebounding through the cooperation between the first limiting portion and the rear end face of the second moving rod.

[0012] In one embodiment, a second limiting member is provided on the rear end face of the second moving rod, and the shape of the upper surface of the second limiting member is adapted to the shape of the side surface of the first limiting portion.

[0013] In one embodiment, the second moving rod and the second limiting member are integrally formed.

[0014] In one embodiment, a pulling rope is provided on the second moving rod.

[0015] In one embodiment, a baffle is further provided on the separation mechanism simulation member; The baffle is located on the side opposite to the stop assembly, and the movement stroke amount of the trigger assembly is restricted by the baffle.

[0016] Compared with the prior art, the separation signal triggering device for satellite ground testing provided by the present invention has the following effects: 1. There is no complex mechanical transmission or electronic control device. The trigger assembly realizes contact and separation with the signal switch through linear movement, and the stop assembly limits the movement stroke of the trigger assembly. The structure is simple and clear, the cost is low, and it is convenient for manufacturing, installation and maintenance.

[0017] 2. Through the cooperation between the trigger assembly and the stop assembly, both of which also have natural state and pre-tightened state, multiple repeated tests can be realized; and the limit of the stop assembly ensures the consistency of the position and state of the trigger assembly during each test, improves the repeatability and accuracy of the test, and can be repeatedly used in different test scenarios. Description of the Drawings

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.

[0019] Figure 1 It is an exploded view of the separation signal triggering device for satellite ground testing in one embodiment; Figure 2 is Figure 1 a schematic enlarged view of the identified part A in Figure 3 a schematic structural view of the separation mechanism simulation part in an embodiment; Figure 4 is Figure 3 a schematic enlarged view of the identified part B in Figure 5 an exploded view of the trigger component in an embodiment; Figure 6 a sectional view of the trigger component in an embodiment; Figure 7 an exploded view of the stopping component in an embodiment; Figure 8 a sectional view of the stopping component in an embodiment; Figure 9 is a schematic height view of each state of the signal switch in an embodiment, where Figure 9 (a) is a schematic height view of the pressed state, Figure 9 (b) is a schematic height view of the critical state, Figure 9 (c) is a schematic height view of the fully sprung state; Figure 10 is a schematic combined view of the trigger component in the natural state in an embodiment; Figure 11 is a schematic combined view of the trigger component in the pre-tightened state in an embodiment; Explanation of reference numerals: Satellite structural plate 1, signal switch 11, elastic piece 111, pressing surface 112, separation mechanism simulation part 2, plane 21, receiving groove 211, baffle mounting position 212, spacer 22, trigger component 3, triggering part 31, abutting block 311, first moving rod 32, first elastic member 33, first limiting member 34, stopping component 4, stopping mounting seat 41, second moving rod 42, second elastic member 43, second limiting member 44, screw 45, pull rope 5, baffle 6.

[0020] The realization of the object, functional features and advantages of the present invention will be further described with reference to the embodiments and the accompanying drawings. Detailed implementation manners

[0021] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0022] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present invention are only used to explain the relative positional relationship, movement conditions, etc. between components in a specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0023] In addition, in the present invention, descriptions such as "first" and "second" are only for descriptive purposes and should not be construed as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0024] In the present invention, unless otherwise clearly specified and limited, terms such as "connection" and "fixation" should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection, an electrical connection, a physical connection or a wireless communication connection; it can be directly connected or indirectly connected through an intermediate medium, and can be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] In addition, the detachable connections mentioned in the present invention include, but are not limited to, snap connections, threaded connections, pin connections, magnetic connections, plug-and-play connections, etc., and can be adaptively selected according to the situation. The specific detachable connection methods appearing in the following embodiments are one of the feasible ways and are not the only limitation.

[0026] Hereinafter, the embodiments of the present invention will be described in detail with reference to the accompanying drawings in the embodiments of the present invention.

[0027] As Figures 1 to 11 shown, one of the separation signal triggering devices for satellite ground testing provided in this embodiment includes a satellite structural board 1 and a separation mechanism simulation part 2. A signal switch 11 is installed on the satellite structural board 1; a trigger component 3 and a stop component 4 are installed on the separation mechanism simulation part 2.

[0028] The trigger component 3 has a travel of moving along a straight line, and has a pre-tightened state and a natural state during the straight-line moving travel; when the trigger component 3 is in the natural state, the trigger component 3 abuts against the signal switch 11, and the signal switch 11 is closed; when the trigger component 3 changes from the natural state to the pre-tightened state, the trigger component 3 moves and separates from the signal switch 11, and the signal switch 11 is opened.

[0029] The stop component 4 is arranged on the movement stroke of the trigger component 3 and also has a pre-tightened state and a natural state. When the trigger component 3 is in the natural state, pressure is applied to the stop component 4, and the stop component 4 is in the pre-tightened state. When the trigger component 3 changes from the natural state to the pre-tightened state, the pressure is released, and the automatic component changes from the pre-tightened state to the natural state and limits the trigger component 3 to prevent rebound.

[0030] Specifically, an installation groove is provided on the satellite structural plate 1, the signal switch 11 is fixed in the installation groove, and the elastic piece on the signal switch 11 faces the separation mechanism simulation part 2.

[0031] The separation mechanism simulation part 2 has a rectangular structure, and its four sides are planes 21 with a certain width. A receiving groove 211 is provided on the plane 21 to place the trigger component 3. The opening length of the receiving groove 211 needs to be determined according to the movement stroke of the trigger part 31, and it is necessary to ensure the movement distance of the trigger part 31 so that the abutting block 311 can smoothly control the opening of the signal switch 11. In this embodiment, in order to ensure that the trigger part 31 has enough movement distance, the rear end of the receiving groove 211 penetrates through the inner side of the plane 21, and a baffle 6 is installed on the inner side to limit the movement stroke of the trigger part 31 in the trigger component 3 to prevent excessive movement. On the plane 21, at the corresponding position of the rear end of the receiving groove 211, a baffle installation position 212 is provided, and the baffle 6 is fixed to the separation mechanism simulation part 2 in a detachable manner, and the stop part of the baffle 6 is located at the rear end of the receiving groove 211 to block the rear end of the receiving groove 211 to limit the movement distance of the trigger part 31.

[0032] In addition, on the plane 21, a through hole is opened at the front end of the receiving groove 211, and the first moving rod 32 passes through the through hole and is mechanically connected to the trigger part 31.

[0033] It should be noted that the detachable connection includes but is not limited to snap connection, threaded connection, pin connection, magnetic connection, plug-in connection, etc., and can be adaptively selected according to the situation. In this embodiment, threaded connection is preferably used. In addition, the detachable connection methods that appear later in this embodiment have the same meaning and will not be elaborated.

[0034] Pads 22 are provided at the four corners of the separation mechanism simulation part 2. When the satellite structural plate 1 is placed on the separation mechanism simulation part 2, it is supported by the pads 22.

[0035] The trigger component 3 includes a trigger part 31 placed in the receiving groove 211, and a first moving rod 32 and a first elastic member 33 arranged in the trigger part 31.

[0036] The trigger part 31 and the separation mechanism simulation part 2 are in clearance fit, so that under the cooperation of the first moving rod 32 and the first elastic member 33, it can move along the length direction of the groove body in the receiving groove 211.

[0037] Specifically, the triggering part 31 is a long cylinder, on which a first mounting hole is provided. The first elastic member 33 is sleeved on the first moving rod 32 and is placed in the first mounting hole together, and the front end face of the first moving rod 32 is mechanically connected in the first mounting hole.

[0038] The ways of mechanical connection include detachable connection and fixed connection. Among them, detachable connection includes but is not limited to snap connection, threaded connection, pin connection, magnetic connection, plug-in connection, etc., and fixed connection includes but is not limited to interference fit connection, welding connection, etc., which can be adaptively selected according to the situation. In addition, the mechanical connection that appears later in this embodiment has the same meaning and will not be elaborated again.

[0039] In this embodiment, the first moving rod 32 and the first mounting hole are preferably threadedly connected. That is, a threaded rod is designed at the front end of the first moving rod 32, and then a threaded hole is correspondingly provided on the inner bottom surface of the first mounting hole. The front end face of the first moving rod 32 is mechanically connected in the first mounting hole through the cooperation of the threaded rod and the threaded hole. It should be noted that the aperture of the threaded hole is smaller than the aperture of the first mounting hole, so as to form a step at the interface between the threaded hole and the first mounting hole, and the first elastic member 33 is limited by this step; the thickness of the threaded rod at the front end of the first moving rod 32 is adapted to the inner aperture of the threaded hole.

[0040] In addition, a protruding abutting block 311 is provided on the triggering part 31, and the abutting block 311 is arranged in the direction towards the signal switch 11. It can be seen that the abutting block 311 has an inclined surface, and this inclined surface faces the side of the signal switch 11. By this inclined surface, the acting path of the force is extended to easily press the signal switch. Technologically, the triggering part 31 and the abutting block 311 are integrally formed, and the integrity is better.

[0041] A first limiting member 34 is provided at the rear end of the first moving rod 32. The first limiting member 34 is a convex block with a cross-section larger than that of the first moving rod 32, and its shape is the same as that of the first moving rod 32. That is, when the cross-section of the first moving rod 32 is circular, the cross-section of the first limiting member 34 is also circular; when the cross-section of the first moving rod 32 is polygonal, the cross-section of the first limiting member 34 is also polygonal. In addition, the first moving rod 32 and the first limiting member 34 are integrally formed to form better integrity. A pull rope 5 is arranged on the first moving rod 32 near the first limiting part 34. By applying a pulling force to the pull rope 5, the first moving rod 32 is driven to move outward, so that the first elastic member 33 is converted from the natural state to the pre-tightening state.

[0042] When assembling, place the first elastic member 33 into the first mounting hole, and then place the assembled components into the receiving groove 211. The first moving rod 32 passes through the front through hole of the receiving groove 211 and passes through the first elastic member 33, and then the front end of the first moving rod 32 is mechanically connected inside the first mounting hole 311. After assembly, one end of the first elastic member 33 contacts the inner bottom surface of the first mounting hole, and the other end contacts the separation mechanism simulation member 2; there is a clearance fit between the first elastic member 33 and the first mounting hole, and there is a clearance fit between the first moving rod 32 and the first elastic member 33.

[0043] Through such a connection method, when the first moving rod 32 moves linearly along the length direction of the receiving groove 211, it will drive the trigger part 31 to move, and further drive the abutting block 311 to move; and when the first moving rod 32 moves, the first elastic member 33 can be in a pre-tightened state and a natural state.

[0044] Specifically, in the initial assembly state, the first elastic member 33 is in a natural state, and the abutting block 311 is located directly below the signal switch 11, applying an upward force to the elastic piece of the signal switch 11 to make the elastic piece closely fit with the pressing surface. The signal switch 11 is in a closed state, and the inner side of the first limiting part 34 contacts the outer side surface of the separation mechanism simulation member 2. Apply a pulling force to the first moving rod 32 through the pulling rope 5. The first moving rod 32 moves outward, driving the mechanically connected trigger part 31 to move outward, thereby driving the abutting block 311 to move outward. The first elastic member 33 changes from a natural state to a pre-tightened state, and the elastic piece of the signal switch 11 changes from a pressed state to a critical state. When the abutting block 311 completely moves away, the elastic piece of the signal switch 11 is in a completely sprung-open state, and the signal switch 11 is turned on.

[0045] Furthermore, on the opposite side of the baffle 6, that is, on the outer side of the separation mechanism simulation member 2, a stop assembly 4 is also provided. The stop assembly 4 restricts the rebound of the first elastic member 33.

[0046] The stop assembly 4 includes a stop mounting seat 41, and a second moving rod 42 and a second elastic member 43 arranged inside the stop mounting seat 41; the stop mounting seat 41 is mechanically connected to the separation mechanism simulation member 2 and is located on the movement direction side when the trigger assembly 3 changes from a natural state to a pre-tightened state. Preferably, the stop mounting seat 41 is fixed to the outer side surface of the separation mechanism simulation member 2 by means of threaded connection.

[0047] The stop mounting seat 41 is provided with a second mounting hole. As can be seen from the figure, the second mounting hole is a through hole, and its size is preferably such that the second moving rod 42 can pass through. The second elastic member 43 is sleeved on the second moving rod 42 and is placed in the second mounting hole together. There is a clearance fit between the stop mounting seat 41, the second elastic member 43, and the second moving rod 42. The length of the second moving rod 42 is equal to or greater than the length of the second elastic member 43 in its natural state and is greater than the depth of the second mounting hole.

[0048] When the first elastic member 33 is in its natural state, the rear end surface of the second moving rod 42 abuts against the side surface of the first limiting member 34, and the first limiting member 34 applies pressure to the second elastic member 43. When the first elastic member 33 is in a pre-tightened state, the rear end surface of the second moving rod 42 abuts against the side surface of the first moving rod 32, and through the cooperation of the first limiting portion and the rear end surface of the second moving rod 42, the first elastic member 33 is prevented from rebounding.

[0049] In order to ensure that the second moving rod 42 does not slide out when there is a clearance fit between the stop mounting seat 41 and the second moving rod 42. A threaded hole is coaxially provided at the front end of the second moving rod 42. After the front end of the second moving rod 42 passes through one side of the second mounting hole, on the other side of the second mounting hole, the screw 45 is screwed into the threaded hole. The screw 45 has a nut. In addition, the length of the second moving rod 42 is equal to or greater than the length of the second elastic member 43 in its natural state and is greater than the depth of the second mounting hole, so as to ensure that the second moving rod 42 has sufficient movement stroke and will not slide out of the second mounting hole.

[0050] Furthermore, a second limiting member 44 is provided on the rear end surface of the second moving rod 42. The shape of the upper surface of the second limiting member 44 is adapted to the shape of the side surface of the first limiting portion 44 to form a more stable contact. Technologically, the second moving rod 42 and the second limiting member 44 are integrally formed, and the integrity is better.

[0051] In addition, a pull rope 5 is provided on the second moving rod 42, close to the screw 45. By applying a pulling force to the pull rope 5, the second moving rod 42 is driven to move downward, so that the second elastic member 43 is converted from its natural state to a pre-tightened state. Further, the pull rope 5 can be tied to the screw 45.

[0052] During assembly, the second elastic member 43 is sleeved on the second moving rod 42, and then placed in the second mounting hole of the stop mounting seat 41. On the other side of the second mounting hole, the second moving rod 42 is fixed and limited by the screw 45, and the pull rope 5 is tied. The stop assembly 4 is assembled. The assembled stop assembly 4 is fixed on the outer side surface of the separation mechanism simulation member 2 by mechanical connection and corresponds to the position of the trigger assembly 3.

[0053] Moreover, in the initial state of the entire structure assembly, a downward pulling force is applied to the second moving rod 42 through the pulling rope 5, causing the second limiting member 44 to abut against the side surface of the first limiting member 34. The first limiting member 34 applies a downward pressure to the second elastic member 43, and the second elastic member 43 is in a pre-tightened state. When the first moving rod 32 and the first limiting member 34 move outward under the action of the pulling rope 5, the second elastic member 43 changes from the pre-tightened state to the natural state, the pressure is released, the second limiting member 44 moves upward and abuts against the side surface of the first moving rod 32, and the first limiting member 34 is blocked by the second limiting member 44 and no longer rebounds.

[0054] It should be noted that assume the height between the elastic piece of the signal switch 11 and the pressing surface is h0 in the pressed state, the height between the elastic piece of the signal switch 11 and the pressing surface is h1 in the critical state, and the height between the elastic piece of the signal switch 11 and the pressing surface is h2 in the fully sprung state. When the first elastic member 33 is in the natural state, the value of the distance H1 between the pressing surface 112 of the signal switch 11 and the upper surface of the abutting block 311 is: h0 ≤ H1 < h1. However, for safety reasons, sufficient margin needs to be left, so H3 is as close to H0 as possible. When the first elastic member 33 is in the pre-tightened state, the value of the distance H2 between the pressing surface 112 of the signal switch 11 and the upper surface of the triggering portion 31 is: h2 ≤ H2.

[0055] The technical features of the above embodiments can be combined arbitrarily. For the sake of concise description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope recorded in this specification.

[0056] The above-described embodiments merely represent several implementation manners of the present invention, and their descriptions are relatively specific and detailed, but should not be construed as limiting the scope of the invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several deformations and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. A separation signal triggering device for satellite ground testing, comprising a satellite structural plate and a separation mechanism simulation component, characterized in that, A signal switch is installed on the satellite structural plate; a trigger assembly and a stop assembly are installed on the separation mechanism simulation part; The trigger assembly has a linear movement stroke and has a pre-tightened state and a natural state during the linear movement stroke; when the trigger assembly is in the natural state, the trigger assembly abuts against the signal switch and the signal switch is closed; when the trigger assembly changes from the natural state to the pre-tightened state, the trigger assembly moves and separates from the signal switch, and the signal switch is turned on; The stop assembly is arranged on the movement stroke of the trigger assembly and also has a pre-tightened state and a natural state; when the trigger assembly is in the natural state, pressure is applied to the stop assembly, and the stop assembly is in the pre-tightened state; when the trigger assembly changes from the natural state to the pre-tightened state, the pressure is released, the stop assembly changes from the pre-tightened state to the natural state, and limits the trigger assembly to prevent rebound.

2. The separation signal triggering device for satellite ground testing according to claim 1, wherein The trigger assembly includes a trigger part arranged on the separation mechanism simulation part, and a first moving rod and a first elastic part arranged in the trigger part; The trigger part and the separation mechanism simulation part are in clearance fit; A first mounting hole is formed in the trigger part, the first elastic part is sleeved on the first moving rod and is placed in the first mounting hole together, and the front end face of the first moving rod is mechanically connected in the first mounting hole; One end of the first elastic part contacts the inner bottom surface of the first mounting hole, and the other end contacts the separation mechanism simulation part; The first elastic part and the first mounting hole are in clearance fit, and a contact block is also arranged on the trigger part; the first moving rod has a linear movement stroke, and the first elastic part has a pre-tightened state and a natural state during the linear movement stroke; When the first elastic part is in the natural state, the contact block abuts against the signal switch and the signal switch is closed; when the first elastic part is in the pre-tightened state, the contact block moves and separates from the signal switch, and the signal switch is turned on.

3. The separation signal triggering device for satellite ground testing according to claim 2, characterized in that, A first limiting part is arranged at the rear end of the first moving rod.

4. The separation signal triggering device for satellite ground testing according to claim 3, wherein A pull rope is arranged on the first moving rod.

5. The separation signal triggering device for satellite ground testing according to claim 3, wherein The first moving rod and the first limiting part are integrally formed.

6. The separation signal triggering device for satellite ground testing according to any one of claims 3 to 5, characterized in that, The stop assembly includes a stop mounting seat, and a second moving rod and a second elastic part arranged in the stop mounting seat; The stop mounting seat is mechanically connected to the separation mechanism simulation part and is located on one side of the movement direction when the trigger assembly changes from the natural state to the pre-tightened state; A second mounting hole is formed in the stop mounting seat, the second elastic part is sleeved on the second moving rod and is placed in the second mounting hole together, and the second moving rod and the stop mounting seat are in clearance fit; When the first elastic part is in the natural state, the rear end face of the second moving rod abuts against the side surface of the first limiting part, and pressure is applied to the second elastic part through the first limiting part; When the first elastic part is in the pre-tightened state, the rear end face of the second moving rod abuts against the side surface of the first moving rod, and through the cooperation of the first limiting part and the rear end face of the second moving rod, the first elastic part is prevented from rebounding.

7. The separation signal triggering device for satellite ground testing according to claim 6, characterized in that, A second limiting member is provided on the rear end surface of the second moving rod, and the shape of the upper surface of the second limiting member is adapted to the shape of the side surface of the first limiting portion.

8. The separation signal triggering device for satellite ground testing according to claim 7, characterized in that, The second moving rod and the second limiting member are integrally formed.

9. The separation signal triggering device for satellite ground testing according to claim 7 or 8, characterized in that A pulling rope is provided on the second moving rod.

10. The separation signal triggering device for satellite ground testing according to claim 1, characterized in that A baffle is further provided on the separation mechanism simulation member; The baffle is located on the side opposite to the stopping assembly, and the movement stroke amount of the triggering assembly is limited by the baffle.

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