Safety test equipment for simulating power capability of separating spring on rocket

Abstract

The invention discloses a safety test device for simulating the power capability of a separation spring on a rocket, and relates to the technical field of spaceflight, and the safety test device is characterized in that a first support is fixed on a platform; a pneumatic unlocking device is arranged on the first support and connected with the electromagnetic valve air supply system. The stop block is arranged on the platform; the isolation cover is arranged on the platform; a first infrared correlation type photoelectric switch and a second infrared correlation type photoelectric switch are arranged in the isolation cover at intervals; the second support is connected with the platform through a first sliding component and located between the first support and the check block. The equal-mass block connecting plate is connected with the platform through at least one second sliding part, and the equal-mass block connecting plate is located between the second support and the check block; and the equal-mass block is arranged on the equal-mass block connecting plate. The reliability of the spring can be verified, and the power capability of the spring can be tested.

Description

Technical Field

[0001] The present application relates to the field of aerospace technology, and in particular to a safety testing device for simulating the functional capacity of a separation spring on an arrow. Background Art

[0002] The separation spring device is a mechanical device composed of several parts and is widely used in the separation interface of launch vehicle products. Figure 1 As shown, the spring 1' in the separation spring assembly is held tightly at both ends by gripping teeth 2'. After the separation spring assembly is installed on the separation surface between the front and rear compartments, when the payload reaches a certain orbital position, the separation surface unlocks, releasing the compressed spring force pre-installed on the launch vehicle, separating the payload from the rocket body. During compartment separation, if the spring 1' were to disengage from the gripping teeth 2' and disintegrate into excess material, it could collide with the rocket in flight, causing a launch failure.

[0003] Since the reliability of the separation spring device's working quality directly determines the success or failure of the spacecraft mission, it is very important to verify whether the designed separation spring device can meet the design and use requirements during the cabin separation process (that is, whether the spring will detach from the clamping teeth during the cabin separation process).

[0004] like Figure 2 As shown, the existing separation spring device testing scheme involves pre-planning and executing a compartment separation test. Specifically, the spring 1' in the separation spring device is pre-compressed to a preset distance and then installed on the separation surface of the front and rear compartments. The rear end of the spring 1' is bolted to a bracket on the rear compartment bulkhead, and the front end of the spring 1' is pressed against the bracket on the front compartment separation surface. The front and rear compartment separation surfaces are fixed with explosive bolts. The front and rear compartments are then hoisted using lifting rings. During compartment separation, the explosive bolts ignite and shear through the weakening grooves under the action of the explosive charge detonation. The front and rear compartments are then separated from the separation surface by the elastic force of the spring 1'. After separation is complete, the spring 1' is checked for disengagement from the gripping teeth 2'. The existing separation spring device testing scheme requires significant manpower and the rental of a dedicated safe testing facility. The explosive bolts used in the test are also expensive. Due to space and time constraints, the existing separation spring device testing scheme suffers from high overall testing costs, long organization times, the inability to conduct tests at any given time, the inability to analyze the spring's performance, and the inability to provide a basis for improving the spring's performance. Summary of the Invention

[0005] The purpose of this application is to provide a safety testing device for simulating the working capacity of a separation spring on an arrow, which can verify the reliability performance of the spring and test the working capacity of the spring, thereby reducing the test cost and test safety cost.

[0006] To achieve the above-mentioned object, the present application provides a safety testing device for simulating the working capacity of a separation spring on an arrow, comprising: a platform, a first support, at least one stopper, an isolation cover, a second support, and an equal-mass block connecting plate;

[0007] The first support is fixed on the platform and is located on the right side of the platform; a pneumatic unlocking device is provided on the first support, and the pneumatic unlocking device is connected to the solenoid valve air supply system;

[0008] The stopper is arranged on the platform and is located on the left side of the platform;

[0009] The isolation cover is provided on the platform and is located between the first support and the stopper; a first infrared beam type photoelectric switch and a second infrared beam type photoelectric switch are provided in intervals inside the isolation cover, and the first infrared beam type photoelectric switch is located on the right side of the isolation cover, and the second infrared beam type photoelectric switch is located on the left side of the isolation cover;

[0010] The second support is connected to the platform through the first sliding member. After the connection, the second support can move left and right along the platform, and the second support is located between the first support and the stopper;

[0011] The equal-mass block connecting plate is connected to the platform via at least one second sliding component. After connection, the equal-mass block connecting plate can move left and right along the platform, and the equal-mass block connecting plate is located between the second support and the stop block. An equal-mass block is provided on the equal-mass block connecting plate, and the equal-mass block is close to the left side of the equal-mass block connecting plate.

[0012] Before the test, the right side of the second support is connected to one end of the connecting rod, the other end of the connecting rod is connected to the pneumatic unlocking device, and the second support is located between the first support and the isolation cover;

[0013] The right end of the equal-mass block connecting plate passes through the isolation cover and contacts the left side of the second support, and the equal-mass block and the second sliding component are located outside the left side of the isolation cover; the first infrared beam type photoelectric switch and the second infrared beam type photoelectric switch on the isolation cover are both in the on state;

[0014] The left end of the tested separation spring is connected to the second support, the right end of the tested separation spring is in contact with the first support, and the tested separation spring is in a compressed state;

[0015] During the test, the solenoid valve air supply system unlocks the pneumatic unlocking device, causing the other end of the connecting rod to disengage from the pneumatic unlocking device, and the tested separation spring recovers its deformation, thereby pushing the second support to move to the left, and the second support drives the equal mass block connecting plate to move to the left; when the second support passes through the isolation cover, the first sliding component sequentially blocks the first infrared counter-radiation type photoelectric switch and the second infrared counter-radiation type photoelectric switch, and the acquisition system obtains the first time when the first infrared counter-radiation type photoelectric switch is blocked and the second time when the second infrared counter-radiation type photoelectric switch is blocked, and uses the first time and the second time to analyze the working capacity of the tested separation spring.

[0016] As above, wherein the platform is provided with a guide rail;

[0017] The first sliding component is a first slider, and the first slider is installed on the guide rail;

[0018] The second sliding component is a second sliding block, and the second sliding block is installed on the guide rail.

[0019] As above, wherein the connecting rod comprises: a front connecting rod and a rear connecting rod;

[0020] One end of the front connecting rod is connected to the second support, the other end of the front connecting rod is provided with a front flange, and one end of the rear connecting rod is provided with a rear flange, and the rear flange is connected to the front flange by bolts;

[0021] Before the test, the other end of the rear link was connected to the pneumatic unlocking device;

[0022] After the solenoid valve air supply system unlocks the pneumatic unlocking device, the other end of the rear connecting rod is separated from the pneumatic unlocking device.

[0023] As above, wherein the first support is further provided with a push rod;

[0024] The push rod passes through the first support, and a left push rod nut and a right push rod nut are provided on the push rod, the left push rod nut is located on the left side of the first support, and the right push rod nut is located on the right side of the first support;

[0025] The left end of the push rod is connected to the outer sleeve of the separation spring; the outer sleeve of the separation spring is provided with a first pin hole;

[0026] A locking rod is provided at the right end of the tested separation spring, and a second pin hole is provided on the locking rod;

[0027] The locking rod is located in the outer sleeve of the separation spring, the second pin hole is aligned with the first pin hole, and a safety pin is inserted into the aligned first pin hole and the second pin hole;

[0028] After the second support is connected to the pneumatic unlocking device through the connecting rod, the safety pin is removed, and before the test, the tested separation spring is kept in a compressed state.

[0029] As above, wherein the first support comprises: a support bottom plate, a support left side plate, a support front side plate and a support rear side plate;

[0030] Wherein, the support base plate is connected to the platform;

[0031] The lower end of the left side plate of the support is connected to the left end of the support bottom plate;

[0032] The lower end of the front side plate of the support is connected to the front end of the support bottom plate, and the left end of the front side plate of the support is connected to the front end of the left side plate of the support;

[0033] The lower end of the support rear side plate is connected to the rear end of the support bottom plate, and the left end of the support rear side plate is connected to the rear end of the support left side plate;

[0034] A connecting rod through hole and a push rod through hole are opened on the left side plate of the support, and the connecting rod through hole is located below the push rod through hole;

[0035] The pneumatic unlocking device is connected to the support base plate, and the other end of the connecting rod passes through the connecting rod through hole and is connected to the pneumatic unlocking device;

[0036] The push rod passes through the push rod through hole, the left push rod nut is located on the left side of the push rod through hole, and the right push rod nut is located on the right side of the push rod through hole.

[0037] As described above, a separation spring inner sleeve is provided on the right end of the second support, and the left end of the separation spring to be tested is connected to the separation spring inner sleeve.

[0038] As described above, there are two second sliding components, and the two second sliding components are spaced apart and arranged at the bottom of the equal-mass block connecting plate.

[0039] As above, there are two stoppers, which are respectively located on both sides of the guide rail. When the equal-mass block connecting plate moves to the left to the extreme position, the left end of the equal-mass block connecting plate contacts the stopper.

[0040] As above, wherein the solenoid valve gas supply system comprises at least: a gas cylinder and a pneumatic solenoid valve;

[0041] The gas cylinder is connected to the pneumatic solenoid valve, and the pneumatic solenoid valve is connected to the pneumatic unlocking device;

[0042] In response to the electrical signal of the solenoid valve, the pneumatic solenoid valve opens, and the compressed air in the gas cylinder flows into the pneumatic unlocking device, and the pneumatic unlocking device is unlocked under the action of air pressure.

[0043] As above, the expression for analyzing the working capacity of the tested separation spring using the first time and the second time is:

[0044]

[0045] m=m1+m2+m3;

[0046] v A,B =a A,B ·t A,B ;

[0047]

[0048] t A,B =t B -t A ;

[0049] Among them, E A,B is the work done by the first sliding component when it passes through position A where the first infrared beam type photoelectric switch is located and position B where the first infrared beam type photoelectric switch is located under the push of the tested separation spring; m is the mass of the equal mass envelope; m1 is the mass of the equal mass block; m2 is the mass of the connecting plate of the equal mass block; m3 is the mass of the second sliding component; v A,B a is the speed of the first sliding member passing through position A where the first infrared photoelectric switch is located and position B where the first infrared photoelectric switch is located; A,B S is the acceleration of the first sliding member passing through position A where the first infrared photoelectric switch is located and position B where the first infrared photoelectric switch is located; A,B is the distance between position A where the first infrared beam type photoelectric switch is located and position B where the first infrared beam type photoelectric switch is located; t A,B t is the time when the first sliding member outputs the voltage signal when it passes through position A where the first infrared photoelectric switch is located and position B where the first infrared photoelectric switch is located; A t is the first time when the output voltage signal of the first infrared photoelectric switch is collected by the collection system when the first sliding member passes through the position A where the first infrared photoelectric switch is located; B It is the second time when the output voltage signal of the second infrared photoelectric switch is collected by the collection system when the first sliding component passes through the position B where the second infrared photoelectric switch is located.

[0050] This application proposes a new safety testing device for simulating the working capacity of a separation spring on an arrow, which can verify the reliability of the spring and test the working capacity of the spring, thereby reducing the test cost and test safety cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments recorded in this application. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0052] Figure 1 A schematic structural diagram of an embodiment of a separation spring device;

[0053] Figure 2 A schematic diagram of an embodiment of a conventional test solution for a separation spring device;

[0054] Figure 3 A schematic structural diagram of an embodiment of a safety test device for simulating the functional strength of a separation spring on an arrow;

[0055] Figure 4 This is a schematic structural diagram of another embodiment of a safety test device for simulating the functional strength of a separation spring on an arrow, wherein: Figure 4 (a) is a cross-sectional view of a safety test device used to simulate the working force of a separation spring on an arrow. Figure 4 (b) is a top view of the safety test equipment used to simulate the functional force of the separation spring on the arrow. DETAILED DESCRIPTION

[0056] The following is a clear and complete description of 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 them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0057] like Figure 3 and Figure 4As shown, the present application provides a safety testing device for simulating the working capacity of a separation spring on an arrow, comprising: a platform 1, a first support 2, at least one stopper 3, an isolation cover 4, a second support 5, and an equal-mass block connecting plate 6. The first support 2 is fixed to the platform 1 and located on the right side of the platform 1. A pneumatic unlocking device 7 is provided on the first support 2, which is connected to a solenoid valve air supply system 8. The stopper 3 is provided on the platform 1 and located on the left side of the platform 1. The isolation cover 4 is provided on the platform 1 and located between the first support 2 and the stopper 3. A first infrared photoelectric switch 41 and a second infrared photoelectric switch 42 are spaced apart within the isolation cover 4, with the first infrared photoelectric switch 41 located on the right side of the isolation cover and the second infrared photoelectric switch 42 located on the left side of the isolation cover 4. The second support 5 is connected to the platform 1 via a first sliding member 51. Once connected, the second support 5 can move left and right along the platform 1 and is located between the first support 2 and the stopper 3. The equal-mass connecting plate 6 is connected to the platform 1 via at least one second sliding component 61. After connection, the equal-mass connecting plate 6 can move left and right along the platform 1, and the equal-mass connecting plate 6 is located between the second support 5 and the stopper 3. An equal-mass block 62 is provided on the equal-mass connecting plate 6, and the equal-mass block 62 is close to the left side of the equal-mass connecting plate 6. Before the test, the right side of the second support 5 is connected to one end of the connecting rod 9, the other end of the connecting rod 9 is connected to the pneumatic unlocking device 7, and the second support 5 is located between the first support 2 and the isolation cover 4. The right end of the equal-mass connecting plate 6 passes through the isolation cover 4 and contacts the left side of the second support 2, and the equal-mass block 62 and the second sliding component 61 are located outside the left side of the isolation cover 4. The first infrared photoelectric switch 41 and the second infrared photoelectric switch 42 on the isolation cover 4 are both in the on state. The left end of the tested separation spring 10 is connected to the second support 5, and the right end of the tested separation spring 10 is in contact with the first support 2, and the tested separation spring 10 is in a compressed state. During the test, the solenoid valve air supply system 8 unlocks the pneumatic unlocking device 7, causing the other end of the connecting rod 9 to disengage the pneumatic unlocking device 7, and the tested separation spring 10 recovers its deformation, thereby pushing the second support 5 to move left, and the second support 5 drives the equal-mass block connecting plate 6 to move left; when the second support 5 passes through the isolation cover 4, the first sliding component 51 sequentially blocks the first infrared photoelectric switch 41 and the second infrared photoelectric switch 42. The acquisition system obtains the first time when the first infrared photoelectric switch 41 is blocked and the second time when the second infrared photoelectric switch 42 is blocked, and uses the first and second times to analyze the working capacity of the tested separation spring 10.

[0058] Furthermore, a guide rail 11 is provided on the platform 1 ; the first sliding component 51 is a first slider, which is mounted on the guide rail 11 ; the second sliding component 61 is a second slider, which is mounted on the guide rail 11 .

[0059] Specifically, the second support 5 is moved left and right along the platform 1 through the first slider and the guide rail 11, and the equal mass block connecting plate 6 is moved left and right along the platform 1 through the second slider and the guide rail 11. However, it is not limited to the second support 5 being moved left and right along the platform 1 through the first slider and the guide rail 11, and the equal mass block connecting plate 6 being moved left and right along the platform 1 through the second slider and the guide rail 11. Other devices with sliding functions can also be used to achieve this.

[0060] Furthermore, the second support 5 is connected to the first sliding component 51 through a support fixing bolt 511 , but is not limited to being connected to the first sliding component 51 through the support fixing bolt 511 .

[0061] Furthermore, the connecting rod 9 includes: a front connecting rod 91 and a rear connecting rod 92; wherein, one end of the front connecting rod 91 is connected to the second support 5, and the other end of the front connecting rod 91 is provided with a front flange 93, and one end of the rear connecting rod 92 is provided with a rear flange 94, and the rear flange 94 is connected to the front flange 93 through a bolt 95; before the test, the other end of the rear connecting rod 92 is connected to the pneumatic unlocking device 7; after the solenoid valve air supply system 8 unlocks the pneumatic unlocking device 7, the other end of the rear connecting rod 92 is detached from the pneumatic unlocking device 7.

[0062] Furthermore, a push rod 21 is provided on the first support 2. The push rod 21 passes through the first support 2 and is provided with a left push rod nut 211 and a right push rod nut 212. The left push rod nut 211 is located on the left side of the first support 2, and the right push rod nut 212 is located on the right side of the first support 2. The left end of the push rod 21 is connected to the outer sleeve 22 of the separation spring; a first pin hole is provided on the outer sleeve 22 of the separation spring. A locking rod 101 is provided on the right end of the tested separation spring 10, and a second pin hole is provided on the locking rod 101. The locking rod 101 is located in the outer sleeve 22 of the separation spring, and the second pin hole is aligned with the first pin hole. A safety pin 23 is inserted into the aligned first and second pin holes. After the second support 5 is connected to the pneumatic unlocking device 7 via the connecting rod 9, the safety pin 23 is removed, and before testing, the tested separation spring 10 remains in a compressed state.

[0063] Furthermore, when the safety pin 23 is not inserted into the first pin hole and the second pin hole, the compression tool is used to compress the tested separation spring 10 to a preset length. After the safety pin 23 is inserted into the first pin hole and the second pin hole, the compression tool is removed, and the tested separation spring 10 is subjected to the action of the front connecting rod 91, the rear connecting rod 92, the rear flange 94, the front flange 93, and the flange bolt 95, and remains in a compressed state.

[0064] Specifically, the specific value of the preset length is set according to actual conditions, and the preferred value in this application is: 220mm.

[0065] Furthermore, the left end of the push rod 21 is threadedly connected to the outer sleeve 22 of the separation spring, but is not limited to the threaded connection.

[0066] Furthermore, the left push rod nut 211 and the right push rod nut 212 are both threadedly connected to the push rod 21, but are not limited to threaded connections. The present application preferably uses threaded connections for ease of installation, disassembly and position adjustment.

[0067] Specifically, the left and right movement of the push rod 21 is restricted by the left push rod nut 211 and the right push rod nut 212 .

[0068] Furthermore, the first support 2 includes: a support base plate, a support left side plate, a support front side plate and a support rear side plate; wherein the support base plate is connected to the platform 1; the lower end of the support left side plate is connected to the left end of the support base plate; the lower end of the support front side plate is connected to the front end of the support base plate, and the left end of the support front side plate is connected to the front end of the support left side plate; the lower end of the support rear side plate is connected to the rear end of the support base plate, and the left end of the support rear side plate is connected to the rear end of the support left side plate; a connecting rod through hole and a push rod through hole are opened on the left side plate of the support, and the connecting rod through hole is located below the push rod through hole; the pneumatic unlocking device 7 is connected to the support base plate, and the other end of the connecting rod 9 passes through the connecting rod through hole and is connected to the pneumatic unlocking device 7; the push rod 21 passes through the push rod through hole, the left push rod nut 211 is located on the left side of the push rod through hole, and the right push rod nut 212 is located on the right side of the push rod through hole.

[0069] Furthermore, a separation spring inner sleeve 52 is provided on the right end of the second support 5 , and the left end of the tested separation spring 10 is connected to the separation spring inner sleeve 52 .

[0070] Furthermore, the left end of the tested separation spring 10 is also connected to the second support 5 via a spring fixing bolt 102 .

[0071] Furthermore, the specific number of the second sliding components 61 is set according to actual conditions. In the present application, it is preferred that there are two second sliding components 61 , and the two second sliding components 61 are spaced apart and arranged at the bottom of the equal-mass block connecting plate 6 .

[0072] Furthermore, there are two stoppers 3 , which are respectively located on both sides of the guide rail 11 . When the equal-mass block connecting plate 6 moves leftward to the extreme position, the left end of the equal-mass block connecting plate 6 contacts the stopper 3 .

[0073] Specifically, during the working process of the tested separation spring 10, since a stop block 3 is provided on the left side of the platform 1, and the equal-mass block connecting plate 6 and the equal-mass block 62 are restricted on the guide rail 11, if the teeth of the inner sleeve 22 of the separation spring disengage, the tested separation spring 10 is affected by inertia and pushes the second slider to continue to move to the left, the equal-mass block connecting plate 6 and the equal-mass block 62 will be constrained by the stop block 3 at the left end of the guide rail 11 and will stop moving to the left. The second slider, the mass block connecting plate 6 and the equal-mass block 62 will not fly out of the guide rail 11 due to infinite left movement and injure the surrounding people, thereby improving the safety of the test.

[0074] Furthermore, the solenoid valve air supply system 8 includes at least: a gas cylinder 81 and a pneumatic solenoid valve; the gas cylinder 81 is connected to the pneumatic solenoid valve, and the pneumatic solenoid valve is connected to the pneumatic unlocking device 7; in response to the solenoid valve electrical signal, the pneumatic solenoid valve opens, and the compressed air in the gas cylinder 81 flows into the pneumatic unlocking device 7, and the pneumatic unlocking device 7 is unlocked under the action of air pressure.

[0075] Specifically, the pneumatic unlocking device 7 is connected to the pneumatic solenoid valve, which receives an electrical signal. The pneumatic solenoid valve opens, and the pneumatic unlocking device 7 is unlocked under the action of air pressure. The rear connecting rod 92 is freed from the connection constraint of the pneumatic unlocking device 7, and the pressure of the separation spring being tested is released, pushing the second support 5, the equal-mass block connecting plate 6, the second sliding member 61, the equal-mass block 62, the front connecting rod 91, the rear connecting rod 92, the front flange 93, and the rear flange 94 to move leftward, releasing the spring pressure and performing work. This application uses compressed air as the separation energy source, replacing the explosive bolt unlocking with the pneumatic unlocking device 7. Since the pneumatic unlocking device 7 can be used repeatedly, while the explosive bolt can only be used once per test, the use of the pneumatic unlocking device 7 can significantly reduce testing costs.

[0076] Furthermore, the expression for analyzing the working capacity of the tested separation spring 10 using the first time and the second time is:

[0077]

[0078] m=m1+m2+m3;

[0079] v A,B =a A,B ·t A,B ;

[0080]

[0081] t A,B =t B -t A ;

[0082] Among them, E A,Bis the work done by the first sliding component when it passes through position A where the first infrared beam type photoelectric switch is located and position B where the first infrared beam type photoelectric switch is located under the push of the tested separation spring; m is the mass of the equal mass envelope; m1 is the mass of the equal mass block; m2 is the mass of the connecting plate of the equal mass block; m3 is the mass of the second sliding component; v A,B a is the speed of the first sliding member passing through position A where the first infrared photoelectric switch is located and position B where the first infrared photoelectric switch is located; A,B S is the acceleration of the first sliding member passing through position A where the first infrared photoelectric switch is located and position B where the first infrared photoelectric switch is located; A,B is the distance between position A where the first infrared beam type photoelectric switch is located and position B where the first infrared beam type photoelectric switch is located; t A,B t is the time when the first sliding member outputs the voltage signal when it passes through position A where the first infrared photoelectric switch is located and position B where the first infrared photoelectric switch is located; A t is the first time when the output voltage signal of the first infrared photoelectric switch is collected by the collection system when the first sliding member passes through the position A where the first infrared photoelectric switch is located; B It is the second time when the output voltage signal of the second infrared photoelectric switch is collected by the collection system when the first sliding component passes through the position B where the second infrared photoelectric switch is located.

[0083] Specifically, when the compartments separate, the separation springs push the compartments to perform work, with the compartment mass evenly distributed across each spring. Therefore, the equal mass envelope (where equal mass envelope = the mass of the equal mass block 62 + the mass of the equal mass block connecting plate 6 + the mass of the second sliding component 61) equals the average decomposition of the compartment mass to the individual separation springs. When testing the spring work process using the safety testing equipment for simulating the performance of separation springs on an arrow, the mass pushed by the tested separation spring 10 is equal to the mass pushed by a single separation spring on the arrow.

[0084] A first infrared photoelectric switch 41 is installed on opposite sides of position A of the isolation cover 4, and a second infrared photoelectric switch 42 is installed on opposite sides of position B of the isolation cover 4. The first infrared photoelectric switch 41 and the second infrared photoelectric switch 42 are powered by a DC power supply. The first infrared photoelectric switch 41 and the second infrared photoelectric switch 42 can convert the input voltage into an optical signal (i.e., radiation) and emit it. When the second support 5 blocks the radiation, the receiver selects the output voltage based on the presence or absence of light. The second support 5 moves leftward to first block the radiation of the first infrared photoelectric switch 41, outputting a voltage signal, and then block the radiation of the second infrared photoelectric switch 42, outputting a voltage signal. The loop voltage signal is collected by the acquisition system to obtain the time difference between the second support 5 passing through the first infrared photoelectric switch 41 and the second infrared photoelectric switch 42, thereby obtaining the speed of the spring slider using the time and displacement formula.

[0085] The first infrared photoelectric switch 41 at position A of the isolation cover 4 is normally open when in opposition, and the first infrared photoelectric switch 41 does not output a voltage signal; when the light between the first infrared photoelectric switch 41 at position A of the isolation cover 4 is blocked, the first infrared photoelectric switch 41 outputs a voltage signal, which is collected by the acquisition system and records the time t when the first infrared photoelectric switch 41 is blocked. A Similarly, the second infrared photoelectric switch 42 at position B of the isolation cover 4 is normally open when facing, and the second infrared photoelectric switch 42 does not output a voltage signal; when the light between the second infrared photoelectric switch 42 at position B of the isolation cover 4 is blocked, the second infrared photoelectric switch 42 outputs a voltage signal, which is collected by the acquisition system and records the time t when the second infrared photoelectric switch 42 is blocked. B The voltage signal is used to analyze the working capacity of the tested separation spring 10 using the first time and the second time.

[0086] The present application utilizes the tested separation spring 10 to push an equal mass envelope (equal mass block 62, equal mass block connecting plate 6, and second sliding component 61) to perform work to simulate the work performed by a spring pushing a cabin section, wherein the equal mass envelope can be matched according to the cabin section mass, and the time required for the tested separation spring 10 to push the equal mass block 62 through the same displacement can be adjusted by adjusting the mass of the equal mass block 62, thereby adjusting the movement speed of the equal mass block 62; key parameters such as the movement displacement and time of the tested separation spring 10 pushing the equal mass block 62 can be collected during ground testing, and the collected key parameters can provide a data basis for the optimized design of the tested separation spring 10. The safety testing equipment for simulating the work performance of the separation spring on an arrow of the present application can be used to conduct multiple tests and repeatedly simulate and reproduce the work performance of the spring on the arrow, and the test is closer to the spring work condition when the cabin section is separated, and can truly test the work performance of the tested separation spring 10.

[0087] After the spring separation test is completed, check whether the left and right ends of the tested separation spring are detached from the teeth.

[0088] The safety test equipment for simulating the working capacity of the separation spring on an arrow used in the present application is used for testing. It does not require a dedicated site, personnel support, or expensive and dangerous explosive bolts. The test cost is low, and it does not require a long time for organization and coordination. It is safe, reliable, and can be carried out at any time without time restrictions. It can also provide spring work data and provide a basis for spring optimization design.

[0089] This application proposes a new safety testing device for simulating the working capacity of a separation spring on an arrow, which can verify the reliability of the spring and test the working capacity of the spring, thereby reducing the test cost and test safety cost.

[0090] Although preferred embodiments of the present application have been described, those skilled in the art may make additional changes and modifications to these embodiments once they become aware of the underlying inventive concepts. Therefore, the scope of protection of this application is intended to include the preferred embodiments and all changes and modifications that fall within the scope of this application. Obviously, those skilled in the art may make various changes and modifications to this application without departing from the spirit and scope of this application. Thus, if such changes and modifications of this application fall within the scope of protection of this application and its equivalents, then this application is intended to include such changes and modifications.

Claims

1. A safety test device for simulating the working capacity of a separation spring on an arrow, characterized in that: include: a platform, a first support, at least one stopper, an isolation cover, a second support, and a connecting plate of equal-mass blocks; The first support is fixed on the platform and is located on the right side of the platform; a pneumatic unlocking device is provided on the first support, and the pneumatic unlocking device is connected to the solenoid valve air supply system; The stopper is arranged on the platform and is located on the left side of the platform; The isolation cover is provided on the platform and is located between the first support and the stopper; a first infrared beam type photoelectric switch and a second infrared beam type photoelectric switch are provided in intervals inside the isolation cover, and the first infrared beam type photoelectric switch is located on the right side of the isolation cover, and the second infrared beam type photoelectric switch is located on the left side of the isolation cover; The second support is connected to the platform through the first sliding member. After the connection, the second support can move left and right along the platform, and the second support is located between the first support and the stopper; The equal-mass block connecting plate is connected to the platform via at least one second sliding component. After connection, the equal-mass block connecting plate can move left and right along the platform, and the equal-mass block connecting plate is located between the second support and the stop block. An equal-mass block is provided on the equal-mass block connecting plate, and the equal-mass block is close to the left side of the equal-mass block connecting plate. Before the test, the right side of the second support is connected to one end of the connecting rod, the other end of the connecting rod is connected to the pneumatic unlocking device, and the second support is located between the first support and the isolation cover; The right end of the equal-mass block connecting plate passes through the isolation cover and contacts the left side of the second support, and the equal-mass block and the second sliding component are located outside the left side of the isolation cover; the first infrared beam type photoelectric switch and the second infrared beam type photoelectric switch on the isolation cover are both in the on state; The left end of the tested separation spring is connected to the second support, the right end of the tested separation spring is in contact with the first support, and the tested separation spring is in a compressed state; During the test, the solenoid valve air supply system unlocks the pneumatic unlocking device, causing the other end of the connecting rod to disengage from the pneumatic unlocking device, and the tested separation spring recovers its deformation, thereby pushing the second support to move to the left, and the second support drives the equal mass block connecting plate to move to the left; when the second support passes through the isolation cover, the first sliding component sequentially blocks the first infrared counter-radiation type photoelectric switch and the second infrared counter-radiation type photoelectric switch, and the acquisition system obtains the first time when the first infrared counter-radiation type photoelectric switch is blocked and the second time when the second infrared counter-radiation type photoelectric switch is blocked, and uses the first time and the second time to analyze the working capacity of the tested separation spring.

2. The safety testing device for simulating the working capacity of a separation spring on an arrow according to claim 1, characterized in that: A guide rail is provided on the platform; The first sliding component is a first slider, and the first slider is installed on the guide rail; The second sliding component is a second sliding block, and the second sliding block is installed on the guide rail.

3. The safety testing device for simulating the working capacity of a separation spring on an arrow according to claim 1, characterized in that: The connecting rod includes: a front connecting rod and a rear connecting rod; One end of the front connecting rod is connected to the second support, the other end of the front connecting rod is provided with a front flange, and one end of the rear connecting rod is provided with a rear flange, and the rear flange is connected to the front flange by bolts; Before the test, the other end of the rear link was connected to the pneumatic unlocking device; After the solenoid valve air supply system unlocks the pneumatic unlocking device, the other end of the rear connecting rod is separated from the pneumatic unlocking device.

4. The safety testing device for simulating the working capacity of a separation spring on an arrow according to claim 1, characterized in that: A push rod is also provided on the first support; The push rod passes through the first support, and a left push rod nut and a right push rod nut are provided on the push rod, the left push rod nut is located on the left side of the first support, and the right push rod nut is located on the right side of the first support; The left end of the push rod is connected to the outer sleeve of the separation spring; the outer sleeve of the separation spring is provided with a first pin hole; A locking rod is provided at the right end of the tested separation spring, and a second pin hole is provided on the locking rod; The locking rod is located in the outer sleeve of the separation spring, the second pin hole is aligned with the first pin hole, and a safety pin is inserted into the aligned first pin hole and the second pin hole; After the second support is connected to the pneumatic unlocking device through the connecting rod, the safety pin is removed, and before the test, the tested separation spring is kept in a compressed state.

5. The safety testing device for simulating the working capacity of a separation spring on an arrow according to claim 4, characterized in that: The first support includes: a support bottom plate, a support left side plate, a support front side plate and a support rear side plate; Wherein, the support base plate is connected to the platform; The lower end of the left side plate of the support is connected to the left end of the support bottom plate; The lower end of the front side plate of the support is connected to the front end of the support bottom plate, and the left end of the front side plate of the support is connected to the front end of the left side plate of the support; The lower end of the support rear side plate is connected to the rear end of the support bottom plate, and the left end of the support rear side plate is connected to the rear end of the support left side plate; A connecting rod through hole and a push rod through hole are opened on the left side plate of the support, and the connecting rod through hole is located below the push rod through hole; The pneumatic unlocking device is connected to the support base plate, and the other end of the connecting rod passes through the connecting rod through hole and is connected to the pneumatic unlocking device; The push rod passes through the push rod through hole, the left push rod nut is located on the left side of the push rod through hole, and the right push rod nut is located on the right side of the push rod through hole.

6. The safety testing device for simulating the working capacity of a separation spring on an arrow according to claim 1, characterized in that: A separation spring inner sleeve is provided on the right end of the second support, and the left end of the separation spring to be tested is connected to the separation spring inner sleeve.

7. The safety testing device for simulating the working capacity of a separation spring on an arrow according to claim 1, characterized in that: There are two second sliding components, and the two second sliding components are spaced apart and arranged at the bottom of the equal-mass block connecting plate.

8. The safety testing device for simulating the working capacity of a separation spring on an arrow according to claim 2, characterized in that: There are two stoppers, which are respectively located on both sides of the guide rail. When the equal-mass block connecting plate moves leftward to the extreme position, the left end of the equal-mass block connecting plate contacts the stopper.

9. The safety testing device for simulating the working capacity of a separation spring on an arrow according to claim 1, characterized in that: The solenoid valve gas supply system includes at least: a gas cylinder and a pneumatic solenoid valve; The gas cylinder is connected to the pneumatic solenoid valve, and the pneumatic solenoid valve is connected to the pneumatic unlocking device; In response to the electrical signal of the solenoid valve, the pneumatic solenoid valve opens, and the compressed air in the gas cylinder flows into the pneumatic unlocking device, and the pneumatic unlocking device is unlocked under the action of air pressure.

10. The safety testing device for simulating the working capacity of a separation spring on an arrow according to claim 1, characterized in that: The expression for analyzing the working capacity of the tested separation spring using the first time and the second time is: m=m1+m2+m3; v A,B =a A,B ·t A,B ; t A,B =t B -t A ; Among them, E A,B is the work done by the first sliding component when it passes through position A where the first infrared beam type photoelectric switch is located and position B where the first infrared beam type photoelectric switch is located under the push of the tested separation spring; m is the mass of the equal mass envelope; m1 is the mass of the equal mass block; m2 is the mass of the connecting plate of the equal mass block; m3 is the mass of the second sliding component; v A,B a is the speed of the first sliding member passing through position A where the first infrared photoelectric switch is located and position B where the first infrared photoelectric switch is located; A,B S is the acceleration of the first sliding member passing through position A where the first infrared photoelectric switch is located and position B where the first infrared photoelectric switch is located; A,B is the distance between position A where the first infrared beam type photoelectric switch is located and position B where the first infrared beam type photoelectric switch is located; t A,B t is the time when the first sliding member outputs the voltage signal when it passes through position A where the first infrared photoelectric switch is located and position B where the first infrared photoelectric switch is located; A t is the first time when the output voltage signal of the first infrared photoelectric switch is collected by the collection system when the first sliding member passes through the position A where the first infrared photoelectric switch is located; B It is the second time when the output voltage signal of the second infrared photoelectric switch is collected by the collection system when the first sliding component passes through the position B where the second infrared photoelectric switch is located.

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