Temperature-controllable gas cylinder accelerated drop test device and test method
By designing a temperature-controlled gas cylinder accelerated drop test device, using a linear motor drive and a temperature-controlled chamber, the problem of existing devices being unable to efficiently simulate high acceleration and high and low temperature environments is solved, thus achieving efficient and safe gas cylinder drop testing.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- ZHEJIANG PROVINCIAL SPECIAL EQUIP INSPECTION & RES INST
- Filing Date
- 2026-03-17
- Publication Date
- 2026-05-08
AI Technical Summary
Existing gas cylinder drop test equipment cannot meet the simulation requirements of high acceleration and high energy impact, and lacks high and low temperature environment simulation functions, making it impossible to accurately assess the drop safety of high-pressure gas cylinders used in drones at different temperatures.
A temperature-controllable gas cylinder accelerated drop test device was designed. It uses a linear motor drive to achieve high acceleration, integrates a temperature control chamber for temperature control, and is equipped with multi-angle release and precise energy measurement functions. It includes a telescopic rotating clamping fixture and a lifting platform. Combined with the linear motor and the annular wall inlet and outlet of the temperature control chamber, it achieves efficient clamping and temperature regulation of the gas cylinder.
It achieves high-energy, high-acceleration drop simulation, has accurate temperature environment simulation capabilities, provides comprehensive automated testing, improves the flexibility and safety of testing, and supports self-verification and feedback optimization.
Smart Images
Figure CN121994440A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of hydrogen storage cylinder testing technology, and in particular to a temperature-controllable accelerated drop test device and test method for gas cylinders. Background Technology
[0002] With the widespread application of hydrogen-powered drones in low-altitude logistics and inspection, the high-pressure hydrogen storage cylinders, their core power source, face severe safety risks from high-altitude drop tests. The operating airspace of drones (typically within 1000 meters) is far higher than the testing standards for traditional automotive hydrogen cylinders, leading to a significant increase in impact kinetic energy during a fall. Simultaneously, the mechanical properties (such as impact resistance) of the carbon fiber wound composite material layer at the cylinder's core are significantly affected by temperature, exhibiting phenomena such as high-temperature softening and low-temperature embrittlement. Therefore, accurately simulating the actual conditions of the cylinders falling from a height of 100 meters under different extreme temperature conditions in a laboratory environment is a key technical requirement for assessing their safety and reliability.
[0003] Currently, existing gas cylinder drop test devices are mainly designed for free-fall tests at room temperature and low height, and cannot meet the simulation requirements of high acceleration and high-energy impacts. For example, some existing devices use small motors and lead screw drives, which have drawbacks such as high friction, low efficiency, and high inertia, limiting the upper limit of acceleration that can be achieved and making it difficult to simulate the huge potential energy of a high-altitude fall within a test platform of limited height. In addition, existing technologies generally lack integrated high and low temperature environment simulation chambers, making it impossible to perform precise temperature pretreatment of the gas cylinders before the fall.
[0004] Therefore, there is an urgent need in this field for a comprehensive testing device and method that can integrate functions such as temperature control, high acceleration drive, multi-angle release and precise energy measurement to fill the technological gap in high and low temperature and high energy drop testing of high-pressure gas cylinders for UAVs. Summary of the Invention
[0005] The main objective of this invention is to overcome the shortcomings of the prior art and provide a temperature-controllable gas cylinder accelerated drop test device and test method.
[0006] The technical solution adopted by the present invention to achieve its technical objective is: a temperature-controllable gas cylinder accelerated drop test device, the gas cylinder accelerated drop test device includes a lifting platform and a gas cylinder telescopic rotatable clamping fixture, the gas cylinder telescopic rotatable clamping fixture and the lifting platform are respectively used to clamp the test gas cylinder and support the gas cylinder to perform vertical accelerated movement.
[0007] The gas cylinder telescopic and rotatable clamping fixture is fixedly installed below the lifting platform. The lifting platform has an inlet and outlet of the annular wall of the temperature control cavity, which provides a channel for the extension and retraction of the multi-section annular wall of the temperature control cavity.
[0008] Preferably, the gas cylinder telescopic rotatable clamping fixture includes a main shaft, a clamping bracket, and a pair of telescopic rotatable clamping arms. The main shaft connects the lifting platform and the clamping bracket, and the telescopic rotatable clamping arms are arranged on both sides of the bottom of the clamping bracket.
[0009] Preferably, the retractable rotatable clamping arm includes a longitudinal bushing, a longitudinal telescopic shaft, a transverse bushing, a transverse telescopic rotatable shaft, and a clamping plate; The longitudinal bushing is fixed on the clamp bracket, the longitudinal telescopic shaft is telescopically disposed inside the longitudinal bushing, the transverse bushing is fixed at the end of the longitudinal telescopic shaft, the transverse telescopic rotating shaft is rotatably disposed inside the transverse bushing, and the clamping plate is fixed at the end of the transverse telescopic rotating shaft.
[0010] Preferably, it also includes a vertical guide rail, a first linear motor, and a second linear motor; The vertical guide rails are arranged on both sides of the lifting platform, and the first linear motor and the second linear motor are arranged on the top of the vertical guide rails to drive the lifting platform to move along the vertical guide rails.
[0011] Preferably, the vertical guide rail is provided with a first rail retainer and a second rail retainer to prevent the gas cylinder telescopic rotating clamping fixture from falling off when the power is off. The first linear track retainer is equipped with a linear velocity sensor to measure the initial velocity when the gas cylinder is released.
[0012] Preferably, the multi-section annular wall of the temperature control cavity is connected to the left baffle and the right baffle of the temperature control cavity by snap-fit, forming a closed temperature control cavity; A safety valve is provided on the left baffle of the temperature control chamber.
[0013] Preferably, it also includes a frame, a metal base plate, a first metal baffle, a second metal baffle, a third metal baffle, and a metal push plate; The metal base plate is located at the bottom of the frame and is used to receive dropped gas cylinders; The first metal baffle, the second metal baffle, and the third metal baffle form a concave structure and are located below the gas cylinder telescopic rotatable clamping fixture. The metal push plate is slidably disposed between the first metal baffle and the third metal baffle.
[0014] Preferably, the second metal baffle is provided with a transparent plastic window, behind which a high-speed camera is provided.
[0015] This invention also provides a temperature-controllable accelerated drop test method for gas cylinders, characterized by comprising the following steps: Calculate the required acceleration based on the simulated drop height; Clamp the gas cylinder and control the temperature to the set temperature; Move the lifting platform to the top and adjust the angle of the gas cylinder; Initiate accelerated descent and release the gas cylinder at the set altitude; Measure the initial velocity and impact energy of the gas cylinder and record the impact footage; The gas cylinders were pushed into the resettlement area.
[0016] Preferably, the method further includes verifying the simulation effect of the device by comparing the simulated drop height with the calculated drop height.
[0017] Compared with the prior art, the beneficial effects of the present invention are: This temperature-controllable gas cylinder accelerated drop test device and method realizes high-energy, high-acceleration drop simulation: driven by a linear motor, it has fast response and high acceleration, and can impart high initial velocity to the gas cylinder within a limited height, which is equivalent to simulating the high impact energy of a drop from a height of 100 meters.
[0018] This temperature-controlled gas cylinder accelerated drop test device and method integrates a precise temperature environment simulation function: through a retractable temperature control cavity, the gas cylinder can be rapidly heated, cooled, and kept warm before the test to achieve high and low temperature environment simulation.
[0019] This temperature-controlled gas cylinder accelerated drop test device and method provides comprehensive and automated testing and safety assurance: it integrates multiple measurement methods such as speed, energy, and image, and is equipped with multiple protection structures such as a linear guide retainer, metal baffle, and safety valve to achieve safe and accurate full-process testing.
[0020] This temperature-controlled accelerated drop test device and method for gas cylinders improves the flexibility and automation of testing: the clamping fixture supports multi-angle adjustment, and the combination of centralized control on the operating table and automatic recovery mechanism improves testing efficiency and consistency.
[0021] This temperature-controlled gas cylinder accelerated drop test device and method has self-verification and feedback optimization capabilities: by comparing the set height with the actual calculated height, the accuracy of the test can be verified, and closed-loop optimization of the test process can be supported. Attached Figure Description
[0022] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0023] Figure 1 This is a three-dimensional structural view of the temperature-controllable gas cylinder accelerated drop test device of the present invention.
[0024] Figure 2This is an enlarged view of the retractable rotating clamping fixture in this invention.
[0025] Figure 3 This is a magnified front view of the gas cylinder temperature control cavity after it is sealed in this invention.
[0026] Figure 4 This is a magnified side view of the gas cylinder temperature control chamber after it has been sealed, according to the present invention.
[0027] Figure 5 This is a front view of the gas cylinder in the device during its movement, as described in this invention.
[0028] Figure 6 A flowchart illustrating the steps of a temperature-controlled accelerated drop test method for gas cylinders.
[0029] The components include: 1. Operating console; 2. Moving base; 3. Vertical guide rail; 4. First linear motor; 5. Lifting platform; 6. Annular wall inlet / outlet of temperature control chamber; 7. Telescopic and rotatable clamping fixture for gas cylinder; 8. Second linear motor; 9. Frame; 10. First linear rail retainer; 11. Linear velocity sensor; 12. First metal baffle; 13. Second metal baffle; 14. Transparent plastic window; 15. High-speed camera; 16. Second linear rail retainer. ; 17. Metal push plate; 18. Third metal baffle; 19. Metal base plate; 20. Placement area baffle; 21. Fixture bracket; 22. Main shaft; 23. Clamping plate; 24. Lateral telescopic rotation shaft; 25. Lateral bushing; 26. Longitudinal telescopic shaft; 27. Longitudinal bushing; 28. Buckle; 29. Safety valve; 30. Left baffle of temperature control chamber; 31. Gas cylinder under test; 32. Multi-section annular wall of temperature control chamber; 33. Right baffle of temperature control chamber. Detailed Implementation
[0030] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. However, it should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of the invention. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concept of the invention.
[0031] In the description of this invention, it should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to or indirectly connected to the other element.
[0032] In the description of this invention, it should be noted that the terms "center," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this invention is in use. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified. "Several" means one or more, unless otherwise explicitly specified.
[0033] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.
[0034] Example 1: Please see Figures 1-5 A temperature-controllable gas cylinder accelerated drop test device includes a lifting platform 5 and a gas cylinder telescopic rotatable clamping fixture 7. The gas cylinder telescopic rotatable clamping fixture 7 and the lifting platform 5 are respectively used to clamp the test gas cylinder and support the gas cylinder to perform vertical accelerated movement.
[0035] The gas cylinder telescopic and rotatable clamping fixture 7 is fixedly installed below the lifting platform 5. The lifting platform 5 has an inlet / outlet 6 for the temperature control chamber annular wall. The inlet / outlet 6 for the temperature control chamber annular wall provides a channel for the extension and retraction of the multi-section annular wall 32 of the temperature control chamber.
[0036] In this embodiment, the telescopic rotatable clamping fixture 7 is connected to the lifting platform 5 via a main shaft 22. A clamping bracket 21 is fixedly installed at the bottom of the main shaft 22. A pair of telescopic rotatable clamping arms are fixedly installed on both sides of the bottom of the clamping bracket 21. The telescopic rotatable clamping arms are used to clamp the test gas cylinder and rotate it to the required test angle.
[0037] The telescopic rotating clamping arm consists of a longitudinal bushing 27, a longitudinal telescopic shaft 26, a transverse bushing 25, a transverse telescopic rotating shaft 24, and a clamping plate 23. The longitudinal bushing 27 is fixed to the bottom of the clamp bracket 21. The longitudinal telescopic shaft 26 is telescopically connected inside the longitudinal bushing 27. The transverse bushing 25 is fixed to the telescopic end of the longitudinal telescopic shaft 26. The transverse telescopic rotating shaft 24 is fixedly installed inside the transverse bushing 25. The clamping plate 23 is fixedly connected to the telescopic end of the transverse telescopic rotating shaft 24. By moving the two clamping plates 23 in opposite directions or back to back, it can be used to clamp the gas cylinder 31 being tested.
[0038] In this embodiment, vertical guide rails 3 are provided at both ends of the lifting platform 5, and the lifting platform 5 and the vertical guide rails 3 are slidably connected through the moving base 2. A first linear motor 4 and a second linear motor 8 are fixedly installed on the top of the vertical guide rail 3. The first linear motor 4 and the second linear motor 8 are driven synchronously and connected to the lifting platform 5 through a screw drive. They are used to provide power for the vertical movement of the lifting platform 5, convert electrical energy into kinetic energy for the vertical movement of the gas cylinder, and provide high acceleration for the gas cylinder.
[0039] In this embodiment, a first rail retainer 10 and a second rail retainer 16 are provided on the vertical guide rail 3. The first rail retainer 10 and the second rail retainer 16 are used to protect the gas cylinder telescopic rotatable clamping fixture 7 on the vertical guide rail 3 from accidentally falling to the ground in the event of an accidental power failure.
[0040] A linear velocity sensor 11 is fixedly installed on the first linear rail retainer 10 to measure the initial velocity of the gas cylinder when it is released by the gas cylinder telescopic rotatable clamping fixture 7 via the acceleration of the lifting platform 5.
[0041] In this embodiment, the temperature control chamber annular wall inlet 6 opened on the lifting platform 5 can automatically extend the temperature control chamber multi-section annular wall 32. The temperature control chamber multi-section annular wall 32 is connected to the temperature control chamber left baffle 30 and temperature control chamber right baffle 33 respectively through a total of eighteen buckles 28, forming a closed temperature control chamber, which closes the gas cylinder 31 to be measured held by the telescopic rotating clamping fixture 7. The closed temperature control chamber cools and heats the gas cylinder 31 to be measured through resistance wire and liquid nitrogen. The left baffle 30 of the temperature control chamber is also equipped with a safety valve 29. When the air pressure inside the chamber is too high, the gas inside the chamber will be discharged to release the excessive pressure and protect the device.
[0042] Furthermore, in this embodiment, a frame 9 is also included, which is used to support and connect the overall test device including the vertical guide rail 3. The overall test device is controlled by the operating console 1.
[0043] The bottom of the frame 9 is integrally connected to a metal base plate 19, which has a built-in energy receiver. The energy receiver is used to sense and calculate the impact energy of the gas cylinder falling onto the metal base plate 19.
[0044] A first metal baffle 12, a second metal baffle 13 and a third metal baffle 18 are provided above the metal base plate 19. The first metal baffle 12, the second metal baffle 13 and the third metal baffle 18 are combined to form a concave structure, which is located below the gas cylinder telescopic rotatable clamping fixture 7.
[0045] The second metal baffle 13 is also provided with a transparent plastic window 14, behind which is a high-speed camera 15, used to capture the impact of the gas cylinder falling onto the metal base plate 19. The transparent plastic window 14 can protect the high-speed camera 15 from the impact of the gas cylinder when it falls.
[0046] A metal push plate 17 is slidably connected between the third metal baffle 18 and the first metal baffle 12. The two ends of the metal push plate 17 are fitted with the sliding grooves inside the third metal baffle 18 and the first metal baffle 12 through sliding joints and maintain a sliding connection. When the gas cylinder falls onto the metal base plate 19, the gas cylinder can be pushed out of the metal base plate 19 by the metal push plate 17.
[0047] A concave baffle 20 is fixedly provided on one side of the metal base plate 19. When the gas cylinder is pushed out of the metal base plate 19 by the metal push plate 17, the gas cylinder is blocked by the baffle 20, which facilitates the storage of the gas cylinder.
[0048] Example 2: Please see Figures 1-6 Based on the above embodiments, this invention also provides a temperature-controllable accelerated drop test method for gas cylinders, such as... Figure 5 As shown, when the lifting platform 5 moves to the top of the testing machine, the height of the gas cylinder 31 under test from the ground is h1 (m); when the gas cylinder drop test begins, the gas cylinder 31 under test accelerates downward with the lifting platform 5 to a certain height and is released by the retractable rotating clamping fixture 7. At this time, the height of the gas cylinder from the ground is h2 (m); when the gas cylinder passes the linear velocity sensor 11, its falling linear velocity is measured, and the height of the linear velocity sensor 11 is h3 (m).
[0049] This device can heat or cool the gas cylinder to the set test temperature through a temperature control system. Then, an acceleration is set to make the gas cylinder accelerate downwards in the acceleration section of the vertical guide rail. When it reaches the release height in front of the rail holder, it obtains a high initial velocity, thereby simulating the energy of a gas cylinder falling from a height under different ambient temperatures. The specific test steps are as follows:
[0050] (1) Calculate the required acceleration based on the simulated drop height: S1. Based on the known height h1 (m) of the gas cylinder rising to the top of the testing machine, the height h2 (m) of the gas cylinder released by the clamping fixture, and the gravitational acceleration g = 9.81 (m / s²), 2 Given the required simulated drop height H (m), calculate the required acceleration a (m / s²) for the vertical guide rail section using the following formula. 2 ): ; S2. Control the first linear motor 4 and the second linear motor 8 through the control panel 1 to move the lifting platform 5 downward to the height that can be reached by a human hand or a robotic arm; (2) Clamp the gas cylinder and control the temperature to the set temperature: S3. Control the gas cylinder telescopic and rotatable clamping fixture 7 to clamp the gas cylinder through the operating table 1, and extend the multi-section annular wall 32 of the temperature control cavity from the lifting platform 5, and install the left baffle 30 and the right baffle 33 of the temperature control cavity. S4. Set the test temperature through the control panel 1, turn on the temperature control system to heat up or cool down, and perform heat preservation treatment to make the gas cylinder temperature reach the set value. S5. Turn off the temperature control system through the operating panel 1, remove the left baffle 30 and the right baffle 33 of the temperature control cavity, and retract the multi-section annular wall 32 of the temperature control cavity into the lifting platform 5. (3) Move the lifting platform to the top and adjust the angle of the gas cylinder: S6. Move the lifting platform 5 to the top of the testing machine via the operating table 1, control the gas cylinder telescopic rotatable clamping fixture 7, and rotate the gas cylinder to the required angle for the test via the transverse telescopic rotatable shaft 24. (4) Initiate accelerated descent and release the gas cylinder at the set altitude: S7. Set the simulated drop height H and release height h2 of the gas cylinder through the control panel 1. The control panel calculates the required acceleration a of the vertical guide rail acceleration section according to step S1. S8. Start the gas cylinder drop test through the control panel 1. The lifting platform 5 drives the gas cylinder to accelerate downward. S9. When the gas cylinder reaches the set release height h2, the signal receiver receives the signal, the first linear motor 4 and the second linear motor 8 stop running, the lifting platform 5 also stops moving downward, and the gas cylinder telescopic rotatable clamping fixture 7 no longer clamps the gas cylinder, releasing the gas cylinder that has obtained a certain initial velocity to make free fall motion until it falls to the metal base plate 19. (5) Measure the initial velocity and impact energy of the gas cylinder and record the impact footage: S10. The moment the gas cylinder falls past the linear velocity sensor 11 on the first linear rail holder 10, the linear velocity of the gas cylinder is measured by the linear velocity sensor 11 and recorded by the operating console 1. S11. The moment the gas cylinder falls onto the metal base plate 19, the high-speed camera 15 captures the image, and the energy of the gas cylinder hitting the metal base plate 19 is obtained by the energy receiver and displayed on the control panel 1. (6) Push the gas cylinder to the resettlement area: S12. Move the metal push plate 17 via the control panel 1 to make the fallen gas cylinder roll into the placement area.
[0051] In this embodiment, the test method further includes comparing the simulated drop height H (m) and the calculated drop height H c The size of (m) was verified by using an accelerated drop test device to simulate a high-altitude drop; When the device is functioning normally, H and H c The values should be as close as possible. Given the cylinder drop velocity v measured in step S10 and the height h3 of the device rail retainer, calculate H using the following formula. c : .
[0052] The solution in this embodiment can be selectively combined with solutions in other embodiments.
[0053] The working principle and specific usage procedure of this temperature-controlled gas cylinder accelerated drop test device and test method are as follows: First, the lifting platform 5 is lowered to a suitable height by the control panel 1. The gas cylinder 31 to be tested is clamped by the gas cylinder telescopic rotating clamping fixture 7. The gas cylinder is then enclosed by the multi-section annular wall 32 of the temperature control chamber, the left baffle 30 of the temperature control chamber, and the right baffle 33 of the temperature control chamber. The gas cylinder is heated or cooled to the test set temperature by resistance wire or liquid nitrogen.
[0054] After the temperature control is completed, the baffle is removed and the annular wall is retracted. The lifting platform 5 is driven by the first linear motor 4 and the second linear motor 8 to accelerate downward on the vertical guide rail 3. At the set release height, the gas cylinder is released by the clamping fixture and falls freely with a certain initial velocity.
[0055] During the descent, the linear velocity sensor 11 measures the linear velocity of the gas cylinder as it passes through. The gas cylinder eventually impacts the metal base plate 19, and its impact energy is recorded by the energy receiver built into the base plate. The moment of impact is captured by the high-speed camera 15 through the transparent plastic window 14.
[0056] After the test, the control panel 1 controls the metal push plate 17 to push the gas cylinder to the baffle 20 in the placement area for collection, and the accuracy of the test is verified by comparing the simulated drop height with the actual calculated height.
[0057] It should be noted that although the above embodiments have been described herein, this does not limit the scope of patent protection of this invention. Therefore, any changes and modifications made to the embodiments described herein based on the innovative concept of this invention, or equivalent structural, procedural, or functional transformations made using the description and drawings of this invention, directly or indirectly applying the above technical solutions to other related technical fields, are all included within the scope of protection of this invention.
Claims
1. A temperature-controllable accelerated drop test device for gas cylinders, characterized in that: The gas cylinder accelerated drop test device includes a lifting platform (5) and a gas cylinder telescopic rotating clamping fixture (7). The gas cylinder telescopic rotating clamping fixture (7) and the lifting platform (5) are used to clamp the test gas cylinder and support the gas cylinder to perform vertical accelerated motion, respectively. The gas cylinder telescopic rotating clamping fixture (7) is fixedly installed below the lifting platform (5). The lifting platform (5) has an inlet / outlet (6) of the temperature control cavity annular wall. The inlet / outlet (6) of the temperature control cavity annular wall is used to provide a channel for the extension and retraction of the multi-section annular wall (32) of the temperature control cavity.
2. The temperature-controllable gas cylinder accelerated drop test device as described in claim 1, characterized in that, The gas cylinder telescopic rotating clamping fixture (7) includes a main shaft (22), a clamping bracket (21) and a pair of telescopic rotating clamping arms. The main shaft (22) connects the lifting platform (5) and the clamping bracket (21). The telescopic rotating clamping arms are arranged on both sides of the bottom of the clamping bracket (21).
3. The temperature-controllable gas cylinder accelerated drop test device as described in claim 2, characterized in that, The retractable rotating clamping arm includes a longitudinal bushing (27), a longitudinal telescopic shaft (26), a transverse bushing (25), a transverse telescopic rotating shaft (24), and a clamping plate (23). The longitudinal bushing (27) is fixed on the clamp bracket (21), the longitudinal telescopic shaft (26) is telescopically disposed inside the longitudinal bushing (27), the transverse bushing (25) is fixed at the end of the longitudinal telescopic shaft (26), the transverse telescopic rotating shaft (24) is rotatably disposed inside the transverse bushing (25), and the clamping plate (23) is fixed at the end of the transverse telescopic rotating shaft (24).
4. The temperature-controllable gas cylinder accelerated drop test device as described in claim 1, characterized in that, It also includes a vertical guide rail (3), a first linear motor (4), and a second linear motor (8); The vertical guide rail (3) is set on both sides of the lifting platform (5), and the first linear motor (4) and the second linear motor (8) are set on the top of the vertical guide rail (3) to drive the lifting platform (5) to move along the vertical guide rail (3).
5. The temperature-controllable gas cylinder accelerated drop test device as described in claim 4, characterized in that, The vertical guide rail (3) is provided with a first rail retainer (10) and a second rail retainer (16) to prevent the gas cylinder telescopic rotating clamping fixture (7) from falling when the power is off. The first linear track holder (10) is equipped with a linear velocity sensor (11) for measuring the initial velocity when the gas cylinder is released.
6. The temperature-controllable gas cylinder accelerated drop test device as described in claim 1, characterized in that, The multi-section annular wall (32) of the temperature control cavity is connected to the left baffle (30) and the right baffle (33) of the temperature control cavity by a buckle (28) to form a closed temperature control cavity; A safety valve (29) is provided on the left baffle (30) of the temperature control cavity.
7. The temperature-controllable gas cylinder accelerated drop test device as described in claim 1, characterized in that, It also includes a frame (9), a metal base plate (19), a first metal baffle (12), a second metal baffle (13), a third metal baffle (18), and a metal push plate (17). The metal base plate (19) is located at the bottom of the frame (9) and is used to receive dropped gas cylinders; The first metal baffle (12), the second metal baffle (13) and the third metal baffle (18) form a concave structure and are located below the gas cylinder telescopic rotating clamping fixture (7); The metal push plate (17) is slidably disposed between the first metal baffle (12) and the third metal baffle (18).
8. The temperature-controllable gas cylinder accelerated drop test device as described in claim 7, characterized in that, The second metal baffle (13) has a transparent plastic window (14), and a high-speed camera (15) is located behind it.
9. A method for a temperature-controllable accelerated drop test of a gas cylinder, using the accelerated drop test apparatus for a gas cylinder as described in any one of claims 1 to 8, characterized in that, Includes the following steps: Calculate the required acceleration based on the simulated drop height; Clamp the gas cylinder and control the temperature to the set temperature; Move the lifting platform (5) to the top and adjust the angle of the gas cylinder; Initiate accelerated descent and release the gas cylinder at the set altitude; Measure the initial velocity and impact energy of the gas cylinder and record the impact footage; The gas cylinders were pushed into the resettlement area.
10. The method as described in claim 9, characterized in that, It also includes verifying the simulation effect of the device by comparing the simulated drop height with the calculated drop height.