Aerodynamic levitation test device for weightless object carrying separation dynamics test

Abstract

The application discloses a kind of aerodynamic suspension test device for weightless object carrying separation dynamics test, and the mechanism equipment mainly includes air suspension platform (1), aerodynamic suspension assembly (2), ground fixed tooling assembly (3), carrying separation assembly (4), ground load loading assembly (5), external detection assembly (6), aerodynamic pin pulling unlocking assembly (7), the tooling mechanism can effectively simulate the dynamics environment of object under weightless environment, under the separation of external load, and provides the platform for object to carry out carrying separation test, while monitoring speed posture, stress and strain and other key parameters, can be real equivalent The dynamics effect of object under weightless environment under the separation of external load in wind tunnel laboratory, greatly reduce cost, improve efficiency.

Description

Technical Field

[0001] This invention relates to the field of aerospace mechanism design technology, and in particular to an aerodynamic suspension test device for weightless object load separation dynamics test. Background Technology

[0002] With the development of space science and technology, the number of spacecraft launched both domestically and internationally is increasing, and their launch orbits have evolved from vacuum conditions above 100km to near-space environments of 20-100km. In this context, the environment faced by spacecraft during launch separation is no longer just a vacuum but also involves the complex effects of rarefied air. This rarefied air, acting between spacecraft, generates loads during separation. The design of separation mechanisms for spacecraft separating in near-space environments of 20-100km must consider these effects and conduct effective verification. Currently, the main experimental method for studying the dynamic characteristics of separation under weightless conditions in China is to conduct separation tests in wind tunnel laboratories. This method is costly and has low verification efficiency. Therefore, there is an urgent need to design new, cost-effective, and highly efficient tooling mechanisms to meet the dynamic requirements of separation under external loads in a realistically equivalent wind tunnel environment. Summary of the Invention

[0003] The purpose of this invention is to provide an aerodynamic suspension test device for weightless object load separation dynamics tests, so as to solve the problems of high cost and low verification efficiency in traditional wind tunnel laboratories for weightless object load separation dynamics tests in the prior art.

[0004] To solve the above-mentioned technical problems, the technical solution of the present invention is: to provide an aerodynamic suspension test device for weightless object load separation dynamics test, including an air suspension platform 1, an aerodynamic suspension component 2, a ground fixing fixture component 3, a load separation component 4, a ground load loading component 5, an external detection component 6, and a pneumatic pin release component 7.

[0005] In the experiment, object B was fixedly installed on the ground fixing fixture assembly 3, and object A was placed on the air suspension platform 1 through the pneumatic suspension assembly 2 to simulate a weightless environment; one end of the load separation assembly 4 was fixed to object B and had pre-compression energy, and the other end was in contact with object A; object A and object B were locked together by the pneumatic pin unlocking assembly 7; the ground load loading assembly 5 applied loads to object A in three directions, and the external detection assembly 6 was set outside object A and object B to detect the velocity, attitude, stress and strain information of object A and object B.

[0006] Furthermore, the air suspension platform 1 includes several marble platforms 1-1, several hydraulic supports 1-2, and a level 1-3. The marble platforms 1-1 are assembled to form a shape that meets the placement requirements of object A. The hydraulic supports 1-2 are used to achieve overall leveling, and the level 1-3 is used to measure and ensure the flatness of the air suspension platform 1.

[0007] The marble platform 1-1 has a smooth surface without pits, which ensures that the air film formed by the pneumatic suspension component 2 when air is blown from the bottom is uniform, thus ensuring stable movement without friction. The hydraulic support 1-2 has sufficient supporting force to support the weight of several marble platforms 1-1 and object A. The level 3 is placed on the marble platform 1-1 and measures the level in two directions to ensure the flatness of the overall air suspension platform 1.

[0008] Furthermore, the pneumatic suspension assembly 2 includes an air float 2-1, a connecting plate 2-2, an adjusting joint 2-3, and adjusting springs 2-4. The pneumatic suspension assembly 2 is suspended on the marble platform 1-1 by air circulation through the air float 2-1, and then connected to object A through the adjusting joint 2-3, thereby eliminating the gravitational environment of object A. The bottom surface of the air float 2-1 is flat and has several small air outlets. The interior of the air float 2-1 is hollow and air is circulated through the air outlets of the flange of the air float 2-1 by an external air source. The air pressure is calculated based on the weight of object A to meet the air film requirements and thus counteract gravity. The air float 2-1 is connected to the connecting plate 2-2 through four sets of adjusting springs 2-4. The connecting plate 2-2 is connected to object A through the adjusting joint 2-3. The overall flatness of object A is leveled by adjusting the adjusting joint 2-3, thereby ensuring the horizontality of object A at the moment of separation. The pneumatic suspension assembly 2 can be adjusted in any number of combinations according to the weight of object A.

[0009] Furthermore, the ground-fixed fixture assembly 3 includes a ground-fixed bracket 3-1 and a two-way adjustable mounting bracket 3-2; the ground-fixed bracket 3-1 is a weight module calculated based on the load, which can balance the load, ensure the strength of the test process, and reliably fix the installation to the ground; the two-way adjustable mounting bracket 3-2 is fixedly connected to the ground-fixed bracket 3-1 to realize the installation of object B and load pulley, and realizes the horizontal and vertical positioning and connection of object B and load pulley through two-way adjustment; the ground-fixed fixture assembly 3 can be arranged at any position according to the site to meet the requirements of fixing object B, and at the same time meet the requirements of loading the three-dimensional mechanical load on object A.

[0010] Furthermore, the bearing separation component 4 includes a sleeve 4-1, a sleeve rod 4-2, a separation spring 4-3, and a separation spring 4-4-5. The sleeve rod 4-2 is installed on object A, and the separation spring 4-3 is installed inside the sleeve 4-1 and then installed on the fixed object B. The size and quantity of the sleeve 4-1, sleeve rod 4-2, and separation spring 4-3 are designed according to the separation mechanism on objects A and B to ensure that the strength is consistent with that of the actual product.

[0011] Furthermore, the ground load loading component 5 includes a pulley 5-1, a steel cable 5-2, a spring wire 5-3, and a counterweight 5-4; the steel cable 5-2 passes through the pulley 5-1 and connects to the load connection point on object A, the pulley 5-1 is fixed to the ground fixing fixture component 3, and the counterweight 5-4 applies a three-dimensional load to the load connection point on object A; the length of the steel cable 5-2 is designed to be more than 10 times the stroke of objects A and B to eliminate load errors caused by the included angle; the spring wire 5-3 is set on the steel cable 5-2 to mitigate the load deviation caused by inertia at the moment of separation.

[0012] Furthermore, the steel cable 5-2 has a length of L and a separation stroke of H. During the separation process, the fixed tooling component 3 remains stationary on the ground. L = 10H satisfies arctanH / L = arctan0.1 ≈ 5.71°, and the load deviation is Fsin5.71° = 0.0995F ≤ 10%F, which meets the load application requirements. The spring wire 5-3 is set on the steel cable 5-2. At the moment of separation, the counterweight 5-4 does not respond as quickly as the separation component 4 due to gravity. Therefore, the spring wire 5-3 is large enough to quickly respond and compensate for the load change caused by the slow response of gravity.

[0013] Furthermore, the external detection component 6 includes a high-speed camera and target 6-1, and a stress strain gauge and testing system 6-2. In the high-speed camera and target 6-1, the visual target is installed on the structural cylinder of object B, and the high-speed camera is fixed on the ground, facing the visual target, which can measure the speed during the separation process. In the stress strain gauge and testing system 6-2, the stress strain gauge is attached to the sleeve 4-1 of object B and the sleeve 4-2 of object A to realize the measurement of stress and strain parameters during the separation process.

[0014] Furthermore, the pneumatic pin-pulling unlocking assembly 7 includes a ground lock hole device 7-1, a movable lock hook fixture 7-2, and a pneumatic pin puller 7-3; the ground lock hole device 7-1 is installed on the ground fixed fixture assembly 3, the movable lock hook fixture 7-2 is fixedly connected to the pneumatic pin puller 7-3 as a whole, and is installed on the moving object A; initially, the post on the pneumatic pin puller 7-3 passes through the lock hole of the ground lock hole device 7-1 to achieve a fixed connection between object A and object B; at the unlocking time, the post on the pneumatic pin puller 7-3 can be retracted by venting air into the pneumatic pin puller 7-3 to complete the unlocking.

[0015] The beneficial effects of the aerodynamic suspension test device for weightless object load separation dynamics test provided by the present invention are as follows:

[0016] 1) The pneumatic suspension test device for weightless object load separation dynamics test in this invention can simulate the weightless state of an object by using a suspension platform and pneumatic suspension components.

[0017] 2) The pneumatic suspension test device for weightless object load separation dynamics test in this invention can separate two objects relative to each other by using the load separation component.

[0018] 3) The aerodynamic suspension test device used in this invention for weightless object load separation dynamics test,

[0019] By using ground-fixed tooling components and ground load loading components, loads can be applied in three directions between separated objects.

[0020] 4) The pneumatic suspension test device used in the present invention for the dynamic test of weightless object bearing separation can effectively observe parameters such as separation speed and stress-strain by using external detection components, and analyze dynamic characteristics.

[0021] 5) The pneumatic suspension test device for weightless object load separation dynamics test in this invention utilizes a pneumatic pin unlocking component to realize the connection locking and release unlocking between two objects.

[0022] 6) The pneumatic suspension test device for weightless object separation dynamics test in this invention has comprehensive beneficial effects 1-5. The pneumatic suspension tooling mechanism can effectively simulate the dynamic environment of object separation under weightless environment and external load, and provide a platform for object to carry out load separation test. At the same time, it can monitor key parameters such as velocity, attitude, stress and strain. It can truly and equivalently simulate the dynamic effect of object separation under weightless environment and external load in wind tunnel laboratory, greatly reducing cost and improving efficiency. Attached Figure Description

[0023] The invention will be further described below with reference to the accompanying drawings:

[0024] Figure 1a is a schematic diagram of the structure of the aerodynamic suspension test device for weightless object load separation dynamics test provided by the invention;

[0025] Figure 1b is a schematic diagram of the partial structure of the weightless objects A and B in the aerodynamic suspension test device for weightless object load separation dynamics test provided by the invention.

[0026] Figure 2 is a schematic diagram of the air suspension platform and pneumatic suspension component provided by the invention.

[0027] Figure 3a is a schematic diagram of the ground fixing tooling assembly and ground load loading assembly provided by the invention;

[0028] Figure 3b is a schematic diagram of the load-bearing separation component structure provided by the invention;

[0029] Figure 4a is a schematic diagram of the pneumatic pin unlocking assembly provided by the invention.

[0030] Figure 4b is a schematic diagram of the external detection component structure provided by the invention. Detailed Implementation

[0031] The following detailed description, in conjunction with the accompanying drawings and specific embodiments, provides a more comprehensive understanding of the aerodynamic suspension testing device for weightless object load separation dynamics experiments proposed in this invention. The advantages and features of this invention will become clearer from the following description and claims. It should be noted that the drawings are all in a very simplified form and use non-precise ratios, and are only used to facilitate and clarify the illustration of the embodiments of this invention.

[0032] The core idea of ​​this invention is that the portable automatic online calibration device for feelers provided by this invention is simple and highly practical, which simplifies the workload of operators in traditional measurement and improves measurement efficiency and quality; using the portable automatic online calibration device for feelers provided by this invention, the entire calibration process is convenient to operate and the data is accurate.

[0033] Example 1

[0034] The pneumatic suspension test device for weightlessness object load separation dynamics test consists of an air suspension platform 1, a pneumatic suspension component 2, a ground fixing fixture component 3, a load separation component 4, a ground load loading component 5, an external detection component 6, and a pneumatic pin release component 7. The air suspension platform 1 includes several marble platforms 1-1, several hydraulic supports 1-2, and a level 1-3. The pneumatic suspension component 2 mainly includes an air float 2-1, a connecting plate 2-2, an adjusting joint 2-3, and an adjusting spring 2-4. The fixing fixture... Component 3 includes a ground fixed bracket 3-1 and a 2-way adjustable mounting bracket 3-2. The load separation component 4 includes a sleeve 4-1, a sleeve rod 4-2, and a separation spring 4-3. The ground load loading component 5 includes a pulley 5-1, a steel cable 5-2, a spring wire 5-3, and a counterweight 5-4. The external detection component 6 includes a high-speed camera and target 6-1, a stress strain gauge and testing system 6-2. The pneumatic pin release component 7 includes a ground lock hole device 7-1, a movable lock hook fixture 7-2, and a pneumatic pin releaser 7-3.

[0035] First, object B is installed on the ground-fixed bracket 3-1, and sleeve 4-1 is installed on the fixed object B. Several marble platforms 1-1 are assembled into a shape that meets the placement requirements of object A, and the overall leveling is achieved using a level 1-3 with several hydraulic supports 1-2. Object A is connected to the pneumatic suspension assembly 2 via adjusting joint 2-3, and several pneumatic suspension assemblies 2 are installed according to calculations. Sleeve 4-2 is installed on the separated object A. Object A and object B are connected, and the ground locking hole equipment 7-1 is installed on the ground-fixed fixture assembly 3. The locking hook equipment 7-2 and the pneumatic pin puller 7-3 are fixedly connected as a whole and installed on the moving object A. The column on the pneumatic pin puller 7-3 is inserted into the locking hole of the ground locking hole equipment 7-1 to achieve the fixed connection between object A and object B.

[0036] Then, using the ground-fixed bracket 3-1 and the 2-way adjustable mounting bracket 3-2, the steel cable 5-2 is passed through the pulley 5-1 and connected to the load connection point on object A. The counterweight 5-4 is used to apply a three-way load to the load connection point on object A.

[0037] Next, in the high-speed camera and target 6-1, the visual target is installed on the structural cylinder of object B, and the high-speed camera is fixed on the ground, facing the visual target, which can measure the speed during the separation process. In the stress strain gauge and testing system 6-2, the stress strain gauge is attached to the sleeve 4-1 of object B and the sleeve 4-2 of object A to measure the stress and strain parameters during the separation process.

[0038] Finally, the pneumatic suspension component 2 is ventilated to simulate weightlessness and levitation of object A. The high-speed camera and target 6-1, stress strain gauge and testing system 6-2 are activated for detection. The pneumatic pin unlocking component 7 is ventilated to unlock object A and object B. The two objects are separated by the action of the separation spring 4-3.

[0039] The following is a further explanation with reference to specific embodiments:

[0040] As shown in Figure 1, the pneumatic suspension test device for weightless object load separation dynamics test consists of an air suspension platform 1, a pneumatic suspension component 2, a ground fixing fixture component 3, a load separation component 4, a ground load loading component 5, an external detection component 6, and a pneumatic pin release component 7.

[0041] As shown in Figure 2, the air suspension platform 1 includes several marble platforms 1-1, several hydraulic supports 1-2, and a level 1-3. The marble platforms 1-1 are assembled to form a shape that meets the placement requirements of object A. The hydraulic supports 1-2 achieve overall leveling, and the level 1-3 measures the flatness of the air suspension platform 1. The pneumatic suspension assembly 2 mainly includes an air float 2-1, a connecting plate 2-2, an adjusting joint 2-3, and an adjusting spring 2-4. The pneumatic suspension assembly 2 is suspended on the marble platforms 1-1 by air circulation through the central air float 2-1, and then connected to object A through the adjusting joint 2-3, thereby eliminating the gravitational environment of object A. The bottom surface of the air float 2-1 is flat and has several small air outlets. The interior of the air float 2-1 is hollow, and air is supplied through the flange vents of the air float 2-1 by an external air source. The air pressure is calculated based on the weight of object A to meet the air film requirements and thus counteract gravity. The air suspension pad 2-1 is connected to the connecting plate 2-2 via four sets of adjusting springs 2-4. The connecting plate 2-2 is connected to object A via adjusting joints 2-3. The flatness of object A is leveled by adjusting joints 2-3, thus ensuring the horizontality of object A at the moment of separation. The pneumatic suspension assembly 2 can be adjusted in any number of combinations according to the weight of object A.

[0042] As shown in Figure 3, the ground-fixed fixture assembly 3 includes a ground-fixed bracket 3-1 and a two-way adjustable mounting bracket 3-2. The ground-fixed bracket 3-1 is a weight module calculated based on the load, which can balance the load, ensure the strength of the test process, and reliably fix the installation to the ground. The two-way adjustable mounting bracket 3-2 can be fixedly connected to the ground-fixed bracket 3-1, and can also be used to install on object B and the load pulley. Through two-way adjustment, the horizontal and vertical positioning and connection of object B and the load pulley can be achieved. The load-bearing separation assembly 4 includes a sleeve 4-1, a sleeve rod 4-2, and a separation spring 4-3. The sleeve rod 4-2 is installed on the separation object A, and the sleeve 4-1 is installed on the fixed object B. The size and quantity of the sleeve 4-1, sleeve rod 4-2, and separation spring 4-3 are quickly designed based on the separation mechanism on the actual objects A and B to ensure the strength consistency requirements with the actual product. The ground load loading assembly 5 includes a pulley 5-1, a steel cable 5-2, a spring wire 5-3, and a counterweight 5-4. The steel cable 5-2 passes through the pulley 5-1 and connects to the load connection point on object A. The pulley 5-1 is fixed to the ground fixing fixture assembly 3 by adjusting its placement. The counterweight 5-4 applies a three-dimensional load to the load connection point on object A. The length of the steel cable 5-2 is designed to be more than 10 times the travel distance between objects A and B to eliminate load errors caused by the included angle. The spring wire 5-3 is installed on the steel cable 5-2 to mitigate the load deviation caused by inertia at the moment of separation.

[0043] As shown in Figure 4, the external detection component 6 includes a high-speed camera and target 6-1, and a stress strain gauge and testing system 6-2. In the high-speed camera and target 6-1, the visual target is mounted on the structural cylinder of object B, and the high-speed camera is fixed to the ground, facing the visual target, to measure the velocity during the separation process. In the stress strain gauge and testing system 6-2, stress strain gauges are attached to the sleeve 4-1 of object B and the sleeve 4-2 of object A to measure the stress and strain parameters during the separation process. The pneumatic pin-pulling unlocking component 7 includes a ground lock hole device 7-1, a movable lock hook fixture 7-2, and a pneumatic pin puller 7-3. The ground lock hole device 7-1 is installed on the ground fixed fixture component 3. The movable lock hook fixture 7-2 and the pneumatic pin puller 7-3 are fixedly connected as a whole and installed on the moving object A. Initially, the post on the pneumatic pin puller 7-3 is inserted into the lock hole of the ground lock hole device 7-1, thus fixing object A and object B together. When unlocking, the post on the pneumatic pin puller 7-3 can be retracted by venting air into the pneumatic pin puller 7-3, thus unlocking the device.

[0044] The contents not described in detail in this specification are prior art known to those skilled in the art. It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within the present invention.

Claims

1. An aerodynamic suspension test device for weightless object load separation dynamics test, characterized in that, It includes an air suspension platform (1), a pneumatic suspension component (2), a ground fixing tooling component (3), a load separation component (4), a ground load loading component (5), an external detection component (6), and a pneumatic pin unlocking component (7). In the experiment, object B was fixedly installed on the ground fixing fixture assembly (3), and object A was placed on the air suspension platform (1) through the pneumatic suspension assembly (2) to simulate a weightless environment; one end of the bearing separation assembly (4) was fixedly connected to object B and had pre-compression energy, and the other end was in contact with object A; object A and object B were locked together by the pneumatic pin unlocking assembly (7); The ground load loading component (5) applies loads in three directions to object A, and the external detection component (6) is set outside object A and object B to detect the velocity, attitude, stress and strain information of object A and object B. The pneumatic suspension assembly (2) includes an air float (2-1), a connecting plate (2-2), an adjusting joint (2-3), and an adjusting spring (2-4). The pneumatic suspension assembly (2) is suspended on the marble platform (1-1) through the air float (2-1) and then connected to object A through the adjusting joint (2-3), thereby eliminating the gravitational environment of object A. The bottom surface of the air float (2-1) is flat and has several small air outlets. The interior of the air float (2-1) is hollow and vented through the air outlet of the flange of the air float (2-1) by an external air source. The venting pressure is controlled by object A. Gravity calculation is performed to meet the requirements of the air film and thus counteract gravity. The air cushion (2-1) is connected to the connecting plate (2-2) through four sets of adjusting springs (2-4). The connecting plate (2-2) is connected to object A through adjusting joints (2-3). The flatness of object A is leveled by adjusting joints (2-3) to ensure the horizontality of object A at the moment of separation. The pneumatic suspension component (2) can be adjusted in any number of combinations according to the weight of object A. The load-bearing separation component (4) includes a sleeve (4-1), a sleeve rod (4-2), a separation spring (4-3), and a separation spring (4-3). The sleeve rod (4-2) is installed on object A, and the separation spring (4-3) is installed inside the sleeve (4-1) and then installed on the fixed object B. The size and quantity of the sleeve (4-1), sleeve rod (4-2), and separation spring (4-3) are designed according to the separation mechanism on objects A and B to ensure that the strength is consistent with that of the real product. The ground load loading component (5) includes a pulley (5-1), a steel cable (5-2), a spring wire (5-3), and a counterweight (5-4). The steel cable (5-2) passes through the pulley (5-1) and is connected to the load connection point on object A. The pulley (5-1) is fixed to the ground fixing fixture component (3). The counterweight (5-4) applies a three-dimensional load to the load connection point on object A. The length of the steel cable (5-2) is designed to be more than 10 times the travel distance of objects A and B to eliminate the load error caused by the included angle. The spring wire (5-3) is set on the steel cable (5-2) to realize the load deviation caused by inertia at the moment of separation.

2. The aerodynamic suspension test device for weightless object load separation dynamics test as described in claim 1, characterized in that, The air suspension platform (1) includes several marble platforms (1-1), several hydraulic supports (1-2), and a level (1-3). The marble platforms (1-1) are assembled to form a shape that meets the placement requirements of object A. The hydraulic supports (1-2) are used to achieve overall leveling, and the level (1-3) is used to measure and ensure the flatness of the air suspension platform (1). The marble platform (1-1) has a smooth surface without pits, which makes the air film uniform when the pneumatic suspension component (2) blows air at the bottom, ensuring that the movement is stable and free from friction. The hydraulic support (1-2) has sufficient support to support the weight of several marble platforms (1-1) and object A. The level (1-3) is placed on the marble platform (1-1) and measures the level in two directions to ensure the flatness of the overall air suspension platform (1).

3. The aerodynamic levitation test device for weightless object load separation dynamics test as described in claim 1, characterized in that, The ground-fixed fixture assembly (3) includes a ground-fixed bracket (3-1) and a two-way adjustable mounting bracket (3-2). The ground-fixed bracket (3-1) is a weight module calculated based on the load, which balances the load, ensures the strength of the test process, and is reliably fixed to the ground. The two-way adjustable mounting bracket (3-2) is fixedly connected to the ground-fixed bracket (3-1) to realize the installation of object B and load pulley. The two-way adjustment realizes the horizontal and vertical positioning and connection of object B and load pulley. The ground-fixed fixture assembly (3) can be arranged at any position according to the site to meet the requirements of fixing object B and at the same time meet the requirements of loading the three-way mechanical load of object A.

4. The aerodynamic levitation test device for weightless object load separation dynamics test as described in claim 1, characterized in that, The steel cable (5-2) has a length of L and a separation stroke of H. During the separation process, the fixed tooling assembly (3) is stationary on the ground. L=10H can satisfy arctan(H / L)= arctan(0.1)≈5.71°, and the load deviation is Fsin(5.71°)=0.0995F≤10%F, which meets the load application requirements. The spring wire (5-3) is set on the steel cable (5-2). At the moment of separation, the counterweight (5-4) does not respond as quickly as the load-bearing separation assembly (4) due to gravity. Therefore, the spring wire (5-3) is large enough to quickly respond and compensate for the load change caused by the slow response of gravity.

5. The aerodynamic suspension test device for weightless object load separation dynamics test as described in claim 1, characterized in that, The external detection component (6) includes a high-speed camera and target (6-1), and a stress strain gauge and testing system (6-2). In the high-speed camera and target (6-1), the visual target is installed on the structural cylinder of object B, and the high-speed camera is fixed on the ground, facing the visual target, to measure the speed during the separation process. In the stress strain gauge and testing system (6-2), the stress strain gauge is pasted on the sleeve (4-1) of object B and the sleeve rod (4-2) of object A to realize the measurement of stress and strain parameters during the separation process.

6. The aerodynamic levitation test device for weightless object load separation dynamics test as described in claim 1, characterized in that, The pneumatic pin-pulling unlocking assembly (7) includes a ground lock hole device (7-1), a movable lock hook fixture (7-2), and a pneumatic pin puller (7-3). The ground lock hole device (7-1) is installed on the ground fixed fixture assembly (3). The movable lock hook fixture (7-2) and the pneumatic pin puller (7-3) are fixedly connected as a whole and installed on the moving object A. Initially, the post on the pneumatic pin puller (7-3) passes through the lock hole of the ground lock hole device (7-1) to achieve a fixed connection between object A and object B. When unlocking, the post on the pneumatic pin puller (7-3) can be retracted by venting air through the pneumatic pin puller (7-3) to complete the unlocking.

Images