A membrane material prestressed loading and irradiation test method and device

Abstract

The present invention relates to the field of membrane material testing technology, specifically to a membrane material prestressed loading and irradiation test method and device, wherein a storage cavity is provided at the upper end of the connecting seat, a rotating block is movably connected in the storage cavity, two first sliding grooves are provided on the outer side of the rotating block, a sliding cavity is provided in the upper end of the rotating block, a clamping mechanism is provided in the sliding cavity, a pressure gauge is fixedly installed in the lower end of the sliding cavity, and a top membrane mechanism is clamped in the clamping mechanism. By arranging the top membrane mechanism at the upper end of the storage mechanism, when the clamping mechanism contacts the arc rod, the clamping mechanism will open, and when the clamping mechanism is separated from the arc rod, the clamping mechanism will clamp the top membrane mechanism at the corresponding position and drive it to the upper side of the connecting seat, after the membrane material is installed by the membrane material installation mechanism and a certain counterweight is added, the irradiation test can be started, thereby realizing the rapid replacement of the top membrane mechanism and protecting the used top membrane mechanism.

Description

Technical Field

[0001] The invention relates to the technical field of membrane material testing, in particular to a membrane material prestressed loading and irradiation testing method and device. Background Art

[0002] Membrane materials used in aerospace need to withstand the rigorous test of the space environment. Take solar sails as an example: the sail surface of the solar sail is made of ultra-light and thin membrane materials, and the sail surface materials are exposed to the space environment for a long time and are affected by space particle radiation. Their performance will degrade, affecting their application in the space environment. With the development of aerospace vehicles, the requirements for aerospace materials are becoming more, higher, and newer. In the process of researching and developing new membrane materials, a series of research and tests are needed to study the mechanism of interaction between space particles and membranes, changes in membrane material performance after space particle irradiation, etc., in order to detect whether they can meet the requirements of the space environment.

[0003] For example, the Chinese patent with the announcement number CN112611639B discloses a device for prestressed loading and irradiation testing of thin films, which includes a frame, a support block, an anvil, and a pressure gauge; the support block, anvil, and pressure gauge can all move up and down inside the frame, and the thin film material to be tested is fixed to the frame by a pressure plate. Adjusting the support screw can change the position of the anvil inside the frame, and thereby adjust the magnitude of the external force applied by the anvil.

[0004] However, the above scheme has the following shortcomings: in the above patent, different forms of prestress can be loaded by replacing different anvils, and then the anvils need to be replaced manually in the above patent, and the anvils cannot be quickly replaced, affecting the continuity of the experiment. At the same time, there is a lack of protection for the anvils after the test is completed. When the device is moved to a new position, the anvil wire may be slightly damaged due to collision during the transportation process, affecting the final test results. For this reason, we introduce a membrane material prestress loading and irradiation test method and device. Summary of the Invention

[0005] The object of the present invention is to provide a method and device for prestressing and irradiating a membrane material to solve the problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A membrane material prestressed loading and irradiation test device comprises a connecting seat, a storage cavity is provided at the upper end of the connecting seat, a rotating block is movably connected in the storage cavity, two first sliding grooves are provided on the outer side of the rotating block, a sliding cavity is provided in the upper end of the rotating block, a clamping mechanism is provided in the sliding cavity, a pressure gauge is fixedly installed in the lower end of the sliding cavity, a top membrane mechanism is clamped in the clamping mechanism, after the top membrane mechanism contacts the membrane material, the membrane material is deformed, a blocking mechanism is provided on the upper side of the storage cavity, and the storage cavity is blocked by the blocking mechanism;

[0008] A storage mechanism is provided in the storage cavity, and the replaced top membrane mechanism is stored by the storage mechanism. A membrane material installation mechanism is provided at the upper end of the connecting seat, and the membrane material is clamped by the membrane material installation mechanism. A transmission motor is fixedly connected in the connecting seat, and the output end of the transmission motor is fixedly connected to the rotating block. Arc rods are provided on both sides of the rotating block, and the arc rods are fixedly connected to the storage cavity, and one end of the arc rods is arranged in an inclined shape.

[0009] Preferably, the clamping mechanism includes a T-shaped positioning column, the lower end of the T-shaped positioning column slides in the sliding cavity, a support spring is fixedly connected in the sliding cavity, the other end of the support spring is fixedly connected to the T-shaped positioning column, and a positioning groove is provided at the upper end of the T-shaped positioning column.

[0010] Preferably, two cross-shaped clamping rods are movably connected on both sides of the T-shaped positioning column, and the opposite ends of the two cross-shaped clamping rods are extended into the positioning groove. A second connecting spring is sleeved on the outer side of the cross-shaped clamping rod, and one end of the second connecting spring is fixedly connected to the positioning groove, and the other end is fixedly connected to the cross-shaped clamping rod. The opposite ends of the two cross-shaped clamping rods are respectively fixedly connected to the L-shaped connecting plate.

[0011] Preferably, the membrane-supporting mechanism includes a first anvil, a second anvil and a third anvil, and two clamping through holes are provided on the outer sides of the first anvil, the second anvil and the third anvil, and the cross-shaped clamping rod is clamped in the clamping through holes.

[0012] Preferably, the blocking mechanism includes two blocking plates, which are slidably connected in a second slide groove, and the second slide groove is opened in the connecting seat. The two blocking plates are fixedly connected to the U-shaped connecting rod, and the U-shaped connecting rod is movably connected to the upper end of the connecting seat. The upper end of the connecting seat is fixedly connected to a telescopic cylinder, and the output end of the telescopic cylinder is fixedly connected to the U-shaped connecting rod.

[0013] Preferably, the storage mechanism includes a circular ring, which is arranged in the storage cavity, and a T-shaped gear ring is fixedly connected to the outside of the circular ring, and the T-shaped gear ring slides in the T-shaped slot, and the T-shaped slot is opened in the connecting seat. A storage slot and a plurality of positioning magnetic blocks are opened at the upper end of the circular ring, and the T-shaped gear ring is fixedly connected to the gear, and the T-shaped gear ring is arranged in the connecting seat, and the gear is fixedly connected to the output end of the connecting motor, and the connecting motor is fixedly connected in the connecting seat.

[0014] Preferably, the membrane material installation mechanism includes a first clamping ring, the lower end of the first clamping ring is fixedly connected to a plurality of sliding rods, the sliding rods are slid into the upper end of the connecting seat, a first connecting spring is sleeved on the outer side of the sliding rod, one end of the first connecting spring is fixedly connected to the first clamping ring, and the other end is fixedly connected to the connecting seat, a second clamping ring is provided on the upper side of the first clamping ring, a plurality of screws are provided on the upper end of the second clamping ring, a plurality of screw holes are provided on the upper end of the first clamping ring, the screws are screwed into the screw holes, and storage boxes are fixedly connected on both sides of the first clamping ring.

[0015] In addition, in order to achieve the above-mentioned object, the present invention also provides a test method for the above-mentioned membrane material prestress loading and irradiation test device, comprising:

[0016] S1. Clamp the membrane material between the first clamping ring and the second clamping ring and keep it in a taut state. Rotate the first, second, and third anvils to be used to the position of the inclined end of the arc rod. Open the telescopic cylinder to allow the two blocking plates to enter the second slide slot. Turn on the transmission motor to drive the rotating block to rotate. When the two L-shaped connecting plates move to the position of the inclined end of the arc rod, the two cross-shaped clamping rods will follow the movement.

[0017] S2. When the connecting end of the first anvil enters the positioning groove, the L-shaped connecting plate will also be out of contact with the arc rod, and the cross-shaped clamping rod will be clamped into the clamping through hole. As the rotating block rotates, the first anvil will move accordingly. When the first anvil rotates to the upper side of the connecting seat, the rotating block stops rotating.

[0018] S3. By adding a counterweight to the upper end of the storage box, the second clamping ring and the first clamping ring can drive the membrane material to move downward and contact with the first anvil. After the membrane material contacts the first anvil, the corresponding force will be transmitted to the support spring, and the magnitude of the loading force on the membrane material is measured by a pressure gauge. The membrane material will be deformed after contacting the first anvil, and the membrane material can be irradiated at this time.

[0019] Compared with the prior art, the beneficial effects of the present invention are: the present invention arranges the top membrane mechanism at the upper end of the storage mechanism, rotates the top membrane mechanism to be used to a suitable position through the storage mechanism, opens the two sealing plates, and drives the clamping mechanism to move through the rotation of the rotating block. When the clamping mechanism contacts the arc rod, the clamping mechanism will open. When the clamping mechanism is separated from the arc rod, the clamping mechanism will clamp the top membrane mechanism at the corresponding position and drive it to the upper side of the connecting seat. After the membrane material is installed by the membrane material installation mechanism and a certain counterweight is added, the irradiation test can be started. At the same time, after use, the top membrane mechanism can be re-stored in the storage cavity, so as to realize rapid replacement of the top membrane mechanism and protect the used top membrane mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0021] Figure 2 It is a schematic diagram of a three-dimensional cross-sectional structure of the present invention;

[0022] Figure 3 This is a schematic diagram of the three-dimensional structure of the storage cavity position of the present invention;

[0023] Figure 4 This is a schematic diagram of the three-dimensional structure of the connection between the rotating block and the T-shaped positioning column of the present invention;

[0024] Figure 5 This is a schematic diagram of a three-dimensional cross-sectional structure of the connection relationship between the rotating block and the T-shaped positioning column of the present invention;

[0025] Figure 6 This is a schematic diagram of the three-dimensional structure of the connection between the ring and the top membrane mechanism of the present invention;

[0026] Figure 7 It is a schematic diagram of the three-dimensional cross-sectional structure of the connecting seat of the present invention.

[0027] Figure 8 This is a schematic diagram of the three-dimensional structure of the L-shaped connecting ring and the arc-shaped rod in contact with each other;

[0028] Figure 9 It is a schematic diagram of the three-dimensional structure of the arc rod of the present invention.

[0029] Figure 10 It is a three-dimensional structural schematic diagram of the connection relationship between the sealing plate and the U-shaped connecting rod of the present invention.

[0030] In the figure: 1. connecting seat; 2. sliding rod; 3. telescopic cylinder; 4. first connecting spring; 5. screw; 6. storage box; 7. second clamping ring; 8. first clamping ring; 9. first anvil; 10. rotating block; 11. first slide groove; 12. L-shaped connecting plate; 13. cross-shaped clamping rod; 14. second connecting spring; 15. T-shaped positioning column; 16. positioning magnetic block; 17. storage groove; 18. T-shaped gear ring; 19. circular ring; 20. storage cavity; 21. blocking plate; 22. U-shaped connecting rod; 23. sliding cavity; 24. supporting spring; 25. pressure gauge; 26. transmission motor; 27. arc rod; 28. T-slot; 29. ​​second slide groove; 30. clamping through hole; 31. screw hole; 32. second anvil; 33. third anvil; 34. gear; 35. connecting motor; 36. positioning groove DETAILED DESCRIPTION

[0031] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0032] See also Figure 1-10 , the present invention provides a technical solution:

[0033] Example 1:

[0034] A membrane material prestressed loading and irradiation test device includes a connecting seat 1, a storage cavity 20 is provided at the upper end of the connecting seat 1, the storage cavity 20 is used to store a first anvil 9, a second anvil 32 and a third anvil 33, a rotating block 10 is movably connected in the storage cavity 20, two first sliding grooves 11 are provided on the outer side of the rotating block 10, a sliding cavity 23 is provided in the upper end of the rotating block 10, a clamping mechanism is provided in the sliding cavity 23, a pressure gauge 25 is fixedly installed in the lower end of the sliding cavity 23, the pressure gauge 25 can be selected in appropriate model and size when in use, a top membrane mechanism is clamped in the clamping mechanism, and the membrane material is deformed after the top membrane mechanism contacts the membrane material, a sealing mechanism is provided on the upper side of the storage cavity 20, and the storage cavity 20 is sealed by the sealing mechanism to prevent impurities in the external environment from entering the storage cavity 20 and falling onto the surface of the top membrane mechanism.

[0035] A storage mechanism is provided in the storage cavity 20, through which the replaced top membrane mechanism is stored. A membrane material installation mechanism is provided at the upper end of the connecting seat 1, through which the membrane material is clamped. A transmission motor 26 is fixedly connected to the connecting seat 1, and the transmission motor 26 can be selected with appropriate size and model when in use. The output end of the transmission motor 26 is fixedly connected to the rotating block 10, and the rotating block 10 can be driven to rotate by turning on the transmission motor 26. Arc rods 27 are provided on both sides of the rotating block 10, and the arc rods 27 are fixedly connected to the storage cavity 20. One end of the arc rod 27 is arranged in an inclined shape. When the clamping mechanism contacts the inclined end of the arc rod 27, the clamping mechanism will open as the rotating block 10 rotates. When the membrane material installation mechanism is disengaged from the arc rod 27, the clamping mechanism will return to the clamping state.

[0036] Example 2:

[0037] On the basis of Example 1, in order to enable the top membrane mechanism to be preserved after use, the clamping mechanism includes a T-shaped positioning column 15, the lower end of the T-shaped positioning column 15 is slidably connected to the sliding cavity 23, and a support spring 24 is fixedly connected to the sliding cavity 23. The other end of the support spring 24 is fixedly connected to the T-shaped positioning column 15, and a positioning groove 36 is provided at the upper end of the T-shaped positioning column 15. Under the elastic force of the support spring 24, the top membrane mechanism will always be in contact with the membrane material.

[0038] Two cross-shaped clamping rods 13 are movably connected on both sides of the T-shaped positioning column 15, and the opposite ends of the two cross-shaped clamping rods 13 extend into the positioning groove 36. A second connecting spring 14 is sleeved on the outside of the cross-shaped clamping rod 13, and one end of the second connecting spring 14 is fixedly connected to the positioning groove 36, and the other end is fixedly connected to the cross-shaped clamping rod 13. The opposite ends of the two cross-shaped clamping rods 13 are respectively fixedly connected to the L-shaped connecting plates 12. When the two L-shaped connecting plates 12 move to the position of the inclined end of the arc rod 27, at this time, as the rotating block 10 rotates, the L-shaped connecting plate 12 will move outward under the guidance of the arc rod 27, and the two cross-shaped clamping rods 13 will follow the movement.

[0039] The top membrane mechanism includes a first anvil 9, a second anvil 32 and a third anvil 33. The first anvil 9, the second anvil 32 and the third anvil 33 are all made of metal materials and will be attracted by magnets. Two card-connecting holes 30 are provided on the outer sides of the first anvil 9, the second anvil 32 and the third anvil 33. The cross-shaped card-connecting rod 13 is card-connected in the card-connecting hole 30. When conducting tests, different shapes of first anvils 9, second anvils 32 and third anvils 33 membrane materials can be selected for testing. The blocking mechanism includes two blocking plates 21. The blocking plates 21 are slidably connected in the second slide groove 29. The second slide groove 29 is provided in the connecting seat 1. The two blocking plates 21 are fixedly connected to the U-shaped connecting rod 22. The U-shaped connecting rod 22 is movably connected to the upper end of the connecting seat 1. The upper end of the connecting seat 1 is fixedly connected to the telescopic cylinder 3, and the output end of the telescopic cylinder 3 is fixedly connected to the U-shaped connecting rod 22.

[0040] The storage mechanism includes a ring 19, which is arranged in the storage cavity 20. A T-shaped gear ring 18 is fixedly connected to the outside of the ring 19. The T-shaped gear ring 18 slides in the T-shaped slot 28. The T-shaped slot 28 is opened in the connecting seat 1. A storage groove 17 is opened at the upper end of the ring 19. The storage groove 17 is used to store the first anvil 9, and a plurality of positioning magnetic blocks 16. The plurality of positioning magnetic blocks 16 are used to limit the second anvil 32 and the third anvil 33. The T-shaped gear ring 18 is fixedly connected to the gear 34. Then, the T-shaped gear ring 18 is arranged in the connecting base 1, and the gear 34 is fixedly connected to the output end of the connecting motor 35. The connecting motor 35 is fixedly connected in the connecting base 1. The connecting motor 35 can be used with a servo motor of appropriate size and model, so that the ring 19 stops after each rotation of 45 degrees, and the gear 34 is driven to rotate by the connecting motor 35, and the gear 34 drives the T-shaped gear ring 18 to rotate. At this time, the ring 19 rotates and drives the first anvil 9, the second anvil 32 and the third anvil 33 to move.

[0041] The membrane material installation mechanism includes a first clamping ring 8, the lower end of the first clamping ring 8 is fixedly connected to several sliding rods 2, the sliding rod 2 is slid into the upper end of the connecting seat 1, and a first connecting spring 4 is sleeved on the outer side of the sliding rod 2, one end of the first connecting spring 4 is fixedly connected to the first clamping ring 8, and the other end is fixedly connected to the connecting seat 1. A second clamping ring 7 is provided on the upper side of the first clamping ring 8, and several screws 5 are provided at the upper end of the second clamping ring 7. Several screw holes 31 are provided at the upper end of the first clamping ring 8, and the screws 5 are screwed into the screw holes 31. Storage boxes 6 are fixedly connected to both sides of the first clamping ring 8. The second clamping ring 7 can be removed by loosening several screws 5 in turn. After removal, the membrane material is placed between the first clamping ring 8 and the second clamping ring 7 and is in a tightened state. By tightening the screws 5 in the screw holes 31, the second clamping ring 7 can be connected to the first clamping ring 8. At this time, the clamping of the membrane material is completed.

[0042] In addition, in order to achieve the above purpose, the present invention also provides a test method for the above membrane material prestress loading and irradiation test device, comprising

[0043] S1. Clamp the membrane material between the first clamping ring 8 and the second clamping ring 7 and keep it in a taut state. Rotate the first anvil 9, the second anvil 32, and the third anvil 33 to be used to the inclined end of the arc rod 27. Open the telescopic cylinder 3 to allow the two blocking plates 21 to enter the second chute 29. Turn on the transmission motor 26 to drive the rotating block 10 to rotate. When the two L-shaped connecting plates 12 move to the inclined end of the arc rod 27, the two cross-shaped clamping rods 13 will follow the movement.

[0044] S2. When the connecting end of the first anvil 9 enters the positioning groove 36, the L-shaped connecting plate 12 will also be out of contact with the arc rod 27, and the cross-shaped clamping rod 13 will be clamped into the clamping through hole 30. As the rotating block 10 rotates, the first anvil 9 will move accordingly. When the first anvil 9 rotates to the upper side of the connecting seat 1, the rotating block 10 stops rotating.

[0045] S3. By adding a counterweight to the upper end of the storage box 6, the second clamping ring 7 and the first clamping ring 8 can drive the membrane material to move downward and contact with the first anvil 9. After the membrane material contacts the first anvil 9, the corresponding force will be transmitted to the support spring 24, and the magnitude of the loading force on the membrane material is measured by the pressure gauge 25. The membrane material will be deformed after contacting the first anvil 9, and the membrane material can be irradiated at this time.

[0046] Working principle: when in use, the second clamping ring 7 can be removed by loosening several screws 5 in sequence. After removal, the membrane material is placed between the first clamping ring 8 and the second clamping ring 7 and is in a tightened state. The second clamping ring 7 can be connected to the first clamping ring 8 by tightening the screw 5 in the screw hole 31. At this time, after the clamping of the membrane material is completed, the first anvil 9, the second anvil 32 and the third anvil 33 to be used are rotated to the position of the inclined end of the arc rod 27, such as the first anvil 9. Specifically, the connecting motor 35 is turned on to drive the gear 34 to rotate. Since the gear 34 is engaged with the T-shaped gear ring 18, the ring 19 will start to rotate as the gear 34 rotates. When the anvil to be used is moved to the appropriate position, the connecting motor 35 is turned off.

[0047] When the two L-shaped connecting plates 12 move to the position of the inclined ends of the arc rods 27, the U-shaped connecting plates 12 are moved outward under the guidance of the arc rods 27. At the same time, the two cross-shaped clamping rods 13 will follow the movement. At this time, the anvils entering the positioning grooves 36 will not be clamped. When the rotating block 10 drives the T-shaped positioning column 15 to move to the position of the first anvil 9, after the connecting end of the first anvil 9 enters the positioning groove 36, the L-shaped connecting plate 12 will also be out of contact with the arc rod 27. At this time, under the elastic force of the second connecting spring 14, the cross-shaped clamping rod 13 will be clamped to the clamping connection. After the first anvil 9 is in contact with the first anvil 9, the membrane material is deformed, and the membrane material can be irradiated. After the prestressed stress is applied by the first anvil 9 to the membrane material, the membrane material is subjected to irradiation.

[0048] When the use is completed and the first anvil 9 needs to be stored in the storage cavity 20, or the second anvil 32 and the third anvil 33 need to be replaced, the sealing plate 21 is re-sealed to the storage cavity 20, and the rotating block 10 is controlled to rotate. When the L-shaped connecting plate 12 moves again to the position of the arc rod 27, the cross-shaped clamping rod 13 will be disengaged from the clamping through hole 30. At this time, the first anvil 9 will be limited and stored in the storage groove 17, and the second anvil 32 or the third anvil 33 will be taken out for use again. At the same time, the position of the ring 19 where the anvils are stored can also be rotated to the position of the arc rod 27, so that the L-shaped connecting plate 12 will not clamp any anvil when it is disengaged from the arc rod 27.

[0049] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A membrane material prestressing loading and irradiation test device, comprising a connecting seat, characterized in that: A storage cavity is provided at the upper end of the connecting seat, a rotating block is movably connected to the storage cavity, two first sliding grooves are provided on the outer side of the rotating block, a sliding cavity is provided in the upper end of the rotating block, a clamping mechanism is provided in the sliding cavity, a pressure gauge is fixedly installed in the lower end of the sliding cavity, a top membrane mechanism is clamped in the clamping mechanism, and after the top membrane mechanism contacts the membrane material, the membrane material is deformed, and a blocking mechanism is provided on the upper side of the storage cavity, and the storage cavity is blocked by the blocking mechanism; A storage mechanism is provided in the storage cavity, and the replaced top membrane mechanism is stored by the storage mechanism. A membrane material installation mechanism is provided at the upper end of the connecting seat, and the membrane material is clamped by the membrane material installation mechanism. A transmission motor is fixedly connected to the connecting seat, and the output end of the transmission motor is fixedly connected to the rotating block. Arc rods are provided on both sides of the rotating block, and the arc rods are fixedly connected to the storage cavity, and one end of the arc rods is arranged in an inclined shape; The clamping mechanism includes a T-shaped positioning column, the lower end of which is slidably connected to a sliding cavity, a support spring is fixedly connected to the sliding cavity, the other end of the support spring is fixedly connected to the T-shaped positioning column, a positioning groove is provided at the upper end of the T-shaped positioning column, and two cross-shaped clamping rods are movably connected to the two sides of the T-shaped positioning column; The membrane-supporting mechanism includes a first anvil, a second anvil, and a third anvil. Two clamping holes are respectively formed on the outer sides of the first anvil, the second anvil, and the third anvil. The cross-shaped clamping rod is clamped in the clamping holes. The blocking mechanism includes two blocking plates, which are slidably connected to the second slide groove, which is opened in the connecting seat, and the two blocking plates are fixedly connected to the U-shaped connecting rod, which is movably connected to the upper end of the connecting seat, and the upper end of the connecting seat is fixedly connected to a telescopic cylinder, and the output end of the telescopic cylinder is fixedly connected to the U-shaped connecting rod; The storage mechanism includes a circular ring, which is arranged in a storage cavity. A T-shaped gear ring is fixedly connected to the outside of the circular ring. The T-shaped gear ring slides in a T-shaped slot. The T-shaped slot is opened in a connecting seat. A storage slot and a plurality of positioning magnetic blocks are opened at the upper end of the circular ring. The T-shaped gear ring is fixedly connected to the gear, which is arranged in the connecting seat. The gear is fixedly connected to the output end of the connecting motor, and the connecting motor is fixedly connected in the connecting seat.

2. The membrane material prestressing loading and irradiation testing device according to claim 1, characterized in that: The opposite ends of the two cross-shaped clamping rods are extended into the positioning groove, and a second connecting spring is sleeved on the outside of the cross-shaped clamping rod. One end of the second connecting spring is fixedly connected to the positioning groove, and the other end is fixedly connected to the cross-shaped clamping rod. The opposite ends of the two cross-shaped clamping rods are respectively fixedly connected to the L-shaped connecting plate.

3. The membrane material prestressing loading and irradiation testing device according to claim 1, characterized in that: The membrane material installation mechanism includes a first clamping ring, a plurality of sliding rods are fixedly connected to the lower end of the first clamping ring, the sliding rods are slid into the upper end of the connecting seat, a first connecting spring is sleeved on the outer side of the sliding rod, one end of the first connecting spring is fixedly connected to the first clamping ring, and the other end is fixedly connected to the connecting seat, a second clamping ring is provided on the upper side of the first clamping ring, a plurality of screws are provided on the upper end of the second clamping ring, a plurality of screw holes are provided on the upper end of the first clamping ring, the screws are screwed into the screw holes, and storage boxes are fixedly connected on both sides of the first clamping ring.

4. A test method for the membrane material prestressing loading and irradiation test device according to any one of claims 1 to 3, characterized in that: include: S1. Clamp the membrane material between the first clamping ring and the second clamping ring and keep it in a taut state. Rotate the first, second, and third anvils to be used to the position of the inclined end of the arc rod. Open the telescopic cylinder to allow the two blocking plates to enter the second slide slot. Turn on the transmission motor to drive the rotating block to rotate. When the two L-shaped connecting plates move to the position of the inclined end of the arc rod, the two cross-shaped clamping rods will follow the movement. S2. When the connecting end of the first anvil enters the positioning groove, the L-shaped connecting plate will also be out of contact with the arc rod, and the cross-shaped clamping rod will be clamped into the clamping through hole. As the rotating block rotates, the first anvil will move accordingly. When the first anvil rotates to the upper side of the connecting seat, the rotating block stops rotating. S3. By adding a counterweight to the upper end of the storage box, the second clamping ring and the first clamping ring can drive the membrane material to move downward and contact with the first anvil. After the membrane material contacts the first anvil, the corresponding force will be transmitted to the support spring, and the magnitude of the loading force on the membrane material is measured by a pressure gauge. The membrane material will be deformed after contacting the first anvil, and the membrane material can be irradiated at this time.

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