Lightning surge test device

Abstract

The invention discloses a lightning stroke surge test device, and relates to the technical field of test devices, the lightning stroke surge test device comprises a cabinet body and a test part installed in the cabinet body, and the test part is used for carrying out lightning stroke surge immunity test on an object to be tested; the environment manufacturing module is used for manufacturing a test environment conforming to a detection standard; the environment manufacturing module comprises a test platform, the top of the test platform is rotatably connected with a rotating disc, and the top of the rotating disc is fixedly connected with a rotating table. By arranging the environment manufacturing module, the external temperature and humidity air conditioning equipment is used for manufacturing a temperature and humidity environment meeting a test standard, so that the test accuracy is improved; the test environment is the sealed cabin, and the to-be-tested object needs to be transited when being put into the sealed cabin, so that the environment in the sealed cabin is not damaged when the to-be-tested object is taken and put, the environment does not need to be reconstructed in the subsequent test process, the implementation cost is saved, and the test efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of test devices, and particularly to a lightning surge test device. Background Art

[0002] Thunderstorms and lightning are common natural phenomena in daily life. Lightning is a discharge arcing phenomenon that occurs when two clouds with opposite charges in the earth's surface atmosphere approach each other. Due to the huge voltage difference, the air is broken down, and at the same time, a large amount of heat is released, causing the surrounding air to rapidly heat up, expand, and produce a huge sound, that is, thunder. Due to the huge voltage difference, generally speaking, lightning will have a very high current, and its peak value may be as high as tens of thousands of amperes. However, due to its short duration, generally in the microsecond level, the energy of the lightning current is not as large as imagined. However, even in a few tens of microseconds, lightning will generate extremely high power, which will cause great damage to buildings such as houses, various antenna towers, power transmission networks, especially electrical equipment.

[0003] At present, technologies such as lightning rods have been able to better protect against the huge damage caused by direct lightning strikes. However, for example, the induced lightning generated when lightning strikes a lightning rod or other objects can still interfere with equipment through high-voltage power lines or communication lines connected outdoors. In addition, the switching actions in general large power stations or substations will also cause huge induced voltages and currents to adjacent lines, generally referred to as indirect lightning strikes. Lightning surge testing is an electromagnetic compatibility immunity test that simulates the impact of indirect lightning strikes on equipment. Its experimental purpose is to detect whether the equipment can continue to operate normally when it is subjected to indirect lightning strikes of a certain voltage, or whether it will experience a certain performance degradation or even complete damage.

[0004] To minimize the impact of environmental parameters on the experimental results, the experiment should be carried out under the following specified climatic and electromagnetic reference conditions: the general storage temperature condition is -30°C to +70°C, the humidity condition is 10% to 90%RH, and the pressure condition is 86 to 106 kPa; while the temperature condition during operation is 15°C to 35°C, the humidity condition is 30% to 60RH, and the pressure condition is 86 to 106 kPa. Based on the standard atmospheric pressure of 101.325 kPa, the altitude that meets the above pressure conditions is 0 to 1362 m, which can cover most environments, so this solution is not taken into consideration. There are usually two solutions in the prior art to achieve the specified environmental parameters: one is to construct an overall test space such as a temperature and humidity controlled laboratory, and maintain the global conditions that meet the temperature through a large-scale environmental control system; the other is to set up a small environmental chamber to create environmental conditions in a local space. Both of the above solutions can rely on existing temperature and humidity air conditioning equipment to achieve environmental regulation. However, both of these methods have obvious defects: overall environmental control requires continuous operation of large-scale equipment, resulting in high energy consumption and construction costs, and the adjustment of environmental parameters takes a long time; while the small environmental chamber has higher local accuracy, but the opening of the chamber door will cause violent fluctuations in temperature and humidity every time the device under test is replaced, and environmental reconstruction needs to be carried out repeatedly, which not only increases equipment wear but also significantly reduces the test efficiency, and the comprehensive cost remains high. Summary of the Invention

[0005] The purpose of the present invention is to provide a lightning surge test device to solve the problems proposed in the above background technology.

[0006] To solve the above technical problems, the technical solution adopted by the present invention is: A lightning surge test device includes a cabinet body and a test component installed inside the cabinet body. The test component is used to perform lightning surge immunity tests on the object to be tested; it also includes an environment manufacturing module for manufacturing a test environment that meets the detection standards. The environment manufacturing module includes a test platform. A turntable is rotatably connected to the top of the test platform. A rotating table is fixedly connected to the top of the turntable. A number of test slots are equidistantly opened on the side wall of the rotating table. A sealing chamber is fixedly connected to the top of the test platform. The sealing chamber includes a sealing part and an operation part. The sealing chamber is in close fit with the rotating table and the turntable. A placement opening is provided on one side of the sealing part. A motor is fixedly installed on the top of the test platform. The output end of the motor and the central axis of the rotating table both extend into the interior of the test platform and are connected by a synchronous pulley and a synchronous belt; fixing components are arranged inside the test slots for fixing the object to be tested; an electrical connection component is arranged inside the test slots for electrically connecting the test component and the object to be tested; a controller is installed inside the cabinet body, and a temperature and humidity sensor is installed inside the operation part. The temperature and humidity sensor and the controller are both electrically connected to an external temperature and humidity air conditioning device by wires, and the output pipe of the external temperature and humidity air conditioning device communicates with the operation part through a pipeline.

[0007] With the above technical solution, by setting up an environmental manufacturing module to utilize external temperature and humidity air-conditioning equipment to create a temperature and humidity environment that meets the test standards, the accuracy of the test can be improved; the test environment is a sealed chamber, and the object under test (EUT) needs to go through a transition when placed in the sealed chamber. Therefore, the environment in the sealed chamber will not be damaged when the object under test is taken in and out. Thus, there is no need to reconstruct the environment during the subsequent test process, saving the implementation cost and improving the test efficiency at the same time.

[0008] A further improvement of the technical solution of the present invention lies in that: the electrical connection assembly includes an installation groove opened at the central position of the turntable. The top view of the installation groove is a regular polygon structure, and the number of sides is equal to and corresponds one by one to the number of test grooves. On each side of the inner wall of the installation groove, two contact heads are fixedly connected. One end of each contact head extends into the interior of the test groove and is connected to a spring clip through a wire. At the top of the inner wall of the sealed chamber, an installation cylinder is fixedly connected. Two pantographs are connected to the installation cylinder. The pantographs are used in cooperation with the contact heads. Conductive rods are fixedly connected to the concave sides of the pantographs, and the conductive rods are electrically connected to the test components.

[0009] With the above technical solution, the two terminals of the test equipment are respectively butted against the two pantographs on the installation cylinder. The installation cylinder and the sealed chamber are both fixed, and the pantographs face the direction where the operation part is located. Two contact heads are arranged on each side of the inner wall of the installation groove and are correspondingly connected to the spring clips. During installation, the two spring clips are first respectively connected to both ends of the motor of the object under test. When the test groove rotates to the operation part, the contact heads corresponding to the spring clips in this test groove come into contact with the pantographs, so that the object under test is electrically connected to the test components through the spring clips, contact heads, pantographs, and conductive rods. Through the above structure, after the object under test is fixed in the test groove, only the corresponding spring clips need to be connected to the object under test. However, at this time, the test equipment is not directly electrically connected to the object under test that has not entered the operation part, and when the test groove rotates to the operation part, the test equipment is electrically connected to the object under test.

[0010] A further improvement of the technical solution of the present invention lies in that: a driving bevel gear is fixedly connected to the central position inside the installation groove, two fixing plates are symmetrically and fixedly connected to the bottom of the installation cylinder, and a driven bevel gear is rotatably connected to one side of one of the fixing plates. The driven bevel gear is meshed with the driving bevel gear. Two first sliding rods are fixedly connected between the two fixing plates close to each other. A sliding cylinder is slidably connected between the two first sliding rods. A top block is fixedly connected to the inside of the sliding cylinder. One end of the central axis of the driven bevel gear extends to the side where the two fixing plates are close to each other and is fixedly connected with an end face cam. The end face cam is used in cooperation with the top block. One end of the sliding cylinder is fixedly connected with a linkage rod. The conductive rod is slidably connected with the installation cylinder. One ends of the two conductive rods far from the pantograph extend into the installation cylinder and are fixedly connected with an insulating plate therebetween. A dial is fixedly connected to the bottom of the insulating plate. The bottom of the dial has a bifurcated opening. The end of the linkage rod far from the sliding cylinder passes through the bifurcated opening and is fixedly connected with a support plate. On the side of the inner wall of the installation cylinder far from the conductive rod, a sleeve is fixedly connected. A sliding plate is slidably connected between the inner walls of the sleeve. A connecting rod is fixedly connected between the side of the sliding plate close to the insulating plate. A first spring is fixedly connected between the side of the sliding plate far from the connecting rod and one side of the inner wall of the sleeve.

[0011] With the above technical solution, during the rotation of the turntable, the pantograph is temporarily retracted through transmission, that is, the pantograph is in a retracted state during the rotation process and does not directly contact the contact head until the turntable stops rotating and the pantograph is reset to contact the contact head, thereby avoiding the problem of frictional loss between the two.

[0012] A further improvement of the technical solution of the present invention lies in that: the sleeve is arranged as a piston cylinder, the sliding plate is arranged as a piston plate, the side wall of the sliding plate is closely attached to the inner wall of the sleeve, and an air inlet pipe and an air outlet pipe are arranged on the sleeve. Check valves are arranged inside both the air inlet pipe and the air outlet pipe. The diameter of the air outlet pipe is larger than that of the air inlet pipe.

[0013] With the above technical solution, by setting a speed reduction structure to slow down the reset speed of the pantograph, it is possible to push the pantograph away from the contact head again before the pantograph resets, so that the pantograph does not contact the contact head throughout the process, and the pantograph will not be reset to contact the contact head until the turntable stops rotating, thereby avoiding wear. On the other hand, due to the above speed limit effect, the reset process of the pantograph is slow, thereby reducing the impact between the pantograph and the contact head and improving the service life.

[0014] It should be particularly noted that when one of the test slots is facing the placement opening, the test slot opposite to it is facing the center of the operation part. Correspondingly, at this time, the top block contacts the most concave side of the arc surface of the end face cam, that is, the support plate is in the state farthest from the driven bevel gear.

[0015] A further improvement of the technical solution of the present invention lies in that: there are four test tanks, the sealing part is arranged in a cylindrical structure, and an air supply pipe is fixedly connected to a part of the sealing part that is 90° relative to the center of the placement port. The position where the air supply pipe is located is directly opposite to the moving path of the test tank. One of the air supply pipes is communicated with the air outlet pipe, and the other air supply pipe is communicated with the air inlet pipe. An input pipe and an output pipe are symmetrically arranged on the sealing part. Both the input pipe and the output pipe are perpendicular to the orientation of the placement port. Check valves are arranged inside both the input pipe and the output pipe. Guide grooves are opened on both sides of the inner wall of the sealing chamber. One of the guide grooves is communicated with the input pipe and one of the air supply pipes at both ends respectively, and the other guide groove is communicated with the output pipe and the other air supply pipe at both ends respectively.

[0016] Adopting the above technical solution, according to the rotation direction of the turntable, it can be known that the air carrying the test conditions (carried out from the operation part) is in area IV, while the external air is carried in area II. When passing through this state, since air is simultaneously pumped in through the air inlet pipe and exhausted through the air outlet pipe, and the air inlet pipe is communicated with area IV through the air supply pipe, the air in area II will be pumped into the sleeve interior (at the same time, external air enters area IV through the input pipe to balance the air pressure), and is discharged to area II through the air outlet pipe and the other air supply pipe, and at the same time, the air in area II is squeezed out from the output pipe. After the above operations, the air in area II better meets the test requirements, reduces the damage to the environment caused by each time the object to be tested is sent in, and saves the implementation cost.

[0017] A further improvement of the technical solution of the present invention lies in that: the fixing assembly includes two strip-shaped grooves symmetrically opened inside the test tank. A second sliding rod is fixedly connected between the top and bottom of the two strip-shaped grooves. A lifting plate is slidably connected between the two second sliding rods. A second spring is sleeved outside the second sliding rod and above the lifting plate. Guide rods are symmetrically and slidably connected to the top of the lifting plate. A limiting block is fixedly connected to the top of the guide rod. The bottom of the guide rod extends below the lifting plate and is fixedly connected to a pressing plate. A flexible pad is fixedly connected to the bottom of the pressing plate. A third spring is sleeved on the outside of the guide rod between the pressing plate and the lifting plate. A handle is fixedly connected to the top of the lifting plate.

[0018] Adopting the above technical solution, by pulling up the handle, the lifting plate is driven to move upward, while squeezing the third springs on both sides, and at the same time, the pressing plate is driven to move upward through the limiting block and the guide rod until the height is sufficient to place the object to be tested. At this time, the object to be tested can be placed in the test tank, and then the handle is slowly released, and the lifting plate can be pushed to reset under the elastic force of the third spring until the flexible pad contacts the object to be tested. The flexible pad can be made of rubber material to reduce damage to the object to be tested; the elastic coefficient of the third spring is greater than that of the second spring, and the second spring will also be compressed in the fixed state.

[0019] A further improvement of the technical solution of the present invention lies in that: two mounting blocks are symmetrically and fixedly connected to both sides of the lifting plate. A pressure rod is slidably connected to each mounting block. One end of the two pressure rods on the same side, which is far from each other, is fixedly connected with an abutting block, and one end of the two pressure rods on the same side, which is close to each other, is fixedly connected with a wedge block. A fourth spring is sleeved on the outer part of the pressure rod between the wedge block and the mounting block. Two acting blocks are symmetrically and fixedly connected to the top of the pressing plate. Two corners at the top of the acting block are in contact with the inclined surface of the wedge block. Friction strips are fixedly connected to both sides of the inner wall of the test groove where the strip grooves are located. The friction strips are in extrusion fit with the abutting blocks.

[0020] By adopting the above technical solution, a structure is set to balance the pressing force, so as to avoid the problem that the pressing force applied to a large-sized device is too large. Specifically, when the cushion block (through the flexible cushion) presses the object to be tested, the guide rod and the limit block will be pushed upward by the reaction force, compressing the second spring. At the same time, the acting block pushes the inclined surface of the wedge block upward, pushing the two wedge blocks to move away from each other, and pushing the friction block to move away from each other through the pressure rod, extruding the friction strip, so that the whole lifting plate obtains a friction force in the vertical direction opposite to that of the third spring to share the force acting on the object to be tested, thus avoiding the damage of the object to be tested.

[0021] A further improvement of the technical solution of the present invention lies in that: a U-shaped plate is fixedly connected to one side of the cabinet body. Two L-shaped plates are symmetrically and fixedly connected to one side of the test platform. The L-shaped plates are inserted into the inner side of the U-shaped plate.

[0022] By adopting the above technical solution, the test platform can be fixed to one side of the cabinet body by inserting the L-shaped plate downward into the gap between the U-shaped plate and the cabinet body, so as to facilitate the quick combination operation of the two. The side wall of the L-shaped plate is in contact with both the inner side of the U-shaped plate and the cabinet body, ensuring that there will be no shaking during the operation. And when the test is not carried out, the L-shaped plate can be pulled out upward to achieve quick disassembly, which is convenient for storage or maintenance.

[0023] Due to the adoption of the above technical solution, the technical progress achieved by the present invention compared with the prior art is as follows: 1. The present invention provides a lightning surge test device. By setting an environment manufacturing module, an environmental temperature and humidity meeting the test standard is manufactured by using an external temperature and humidity air-conditioning device to improve the test accuracy. The test environment is a sealed cabin. When the object to be tested is placed in the sealed cabin, it needs to go through a transition. Therefore, the environment in the sealed cabin will not be damaged when the object to be tested is taken and placed. Therefore, it is not necessary to reconstruct the environment during the subsequent test process, saving the implementation cost and improving the test efficiency at the same time.

[0024] 2. The present invention provides a lightning surge test device. By setting up an electrical connection structure, after fixing the object to be tested in the test tank, only the corresponding spring clip needs to be connected to the object to be tested. However, at this time, the test equipment is not directly electrically connected to the object to be tested that has not entered the operation part. When the test tank rotates to the operation part, the test equipment is electrically connected to the object to be tested. The operator does not need to enter the test environment to achieve the electrical connection between the test equipment and the object to be tested, avoiding the situation where the test environment is damaged due to personnel entering the test environment for operation.

[0025] 3. The present invention provides a lightning surge test device. During the rotation of the turntable, the pantograph is temporarily retracted through transmission, that is, the pantograph is in a retracted state during rotation and does not directly contact the contact head until the turntable stops rotating and the pantograph resets and contacts the contact head, thus avoiding the problem of frictional wear between the two; by setting a speed reduction structure to slow down the reset speed of the pantograph, it is possible to push the pantograph away from the contact head again before the pantograph resets, so that the pantograph never resets to contact the contact head before the turntable stops rotating, thus avoiding wear; on the other hand, due to the above speed limiting effect, the reset process of the pantograph is slow, reducing the impact between the pantograph and the contact head and improving the service life.

[0026] 4. By setting a structure to balance the pressing force, the problem of excessive pressing force applied to large-sized equipment is avoided; specifically, when the pad (through a flexible pad) presses the object to be tested, the reaction force will push the guide rod and the limit block to move upward, compress the second spring, and at the same time push the inclined surface on the wedge block upward through the acting block, push the two wedge blocks to move away from each other, and push the friction block to move away from each other through the pressure rod, squeezing the friction strip, so that the entire lifting plate obtains a frictional force in the vertical direction opposite to the third spring to share the force acting on the object to be tested, thus avoiding damage to the object to be tested. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The present invention will be further described below with reference to the drawings.

[0028] Figure 1 It is a schematic structural diagram of the cabinet of the present invention; Figure 2 It is a schematic structural diagram of the whole cabinet and the environment manufacturing module of the present invention; Figure 3 It is a schematic structural diagram of the outside of the environment manufacturing module of the present invention; Figure 4 It is a schematic sectional view of the environment manufacturing module of the present invention; Figure 5 It is a schematic sectional view of the turntable of the present invention; Figure 6External structural schematic diagram of the electrical connection component of the present invention; Figure 7 Split structural schematic diagram of the environmental manufacturing module of the present invention; Figure 8 Split structural schematic diagram of the electrical connection component of the present invention; Figure 9 Split structural schematic diagram of the sliding cylinder and the end face cam of the present invention; Figure 10 Top view schematic diagram of the environmental manufacturing module of the present invention (sealing cabin hidden); Figure 11 Structural schematic diagram of the fixing component of the present invention; Figure 12 For the present invention Figure 7 Enlarged view at position A in Figure 13 Structural schematic diagram of the sealing cabin of the present invention.

[0029] In the figure: 1, cabinet body; 2, test component; 3, test platform; 4, sealing cabin; 401, sealing part; 402, operation part; 5, motor; 6, turntable; 7, turntable; 8, test tank; 9, installation cylinder; 10, installation groove; 11, conductive rod; 12, pantograph; 13, contact; 14, driving bevel gear; 15, fixing plate; 16, driven bevel gear; 17, first sliding rod; 18, sliding cylinder; 19, end face cam; 20, input pipe; 21, top block; 22, sleeve; 23, outlet pipe; 24, inlet pipe; 25, first spring; 26, sliding plate; 27, insulating plate; 28, connecting rod; 29, dial; 30, air supply pipe; 31, output pipe; 32, linkage rod; 33, support plate; 34, strip-shaped groove; 35, second sliding rod; 36, lifting plate; 37, guide rod; 38, third spring; 39, pressing plate; 40, flexible pad; 41, limiting block; 42, mounting block; 43, pressing rod; 44, pressing block; 45, friction strip; 46, wedge block; 47, fourth spring; 48, second spring; 49, L-shaped plate; 50, U-shaped plate; 51, guide groove; 52, spring clip; 53, placement opening; 54, acting block. Detailed implementation manners

[0030] The present invention will be further described in detail below in conjunction with embodiments.

[0031] Embodiment 1 As Figures 1-13As shown in the figure, the present invention provides a lightning surge test device, including a cabinet 1 and a test component 2 installed inside the cabinet 1. The test component 2 is used to conduct a lightning surge immunity test on the object to be tested. It also includes an environmental manufacturing module for manufacturing a test environment that meets the detection standards. The environmental manufacturing module includes a test platform 3. The top of the test platform 3 is rotatably connected to a turntable 6. The top of the turntable 6 is fixedly connected to a rotating table 7. A number of test slots 8 are equidistantly arranged on the side wall of the rotating table 7. The top of the test platform 3 is fixedly connected to a sealed cabin 4. The sealed cabin 4 includes a sealing part 401 and an operation part 402. The sealed cabin 4 is in close fit with both the rotating table 7 and the turntable 6. A placement opening 53 is provided on one side of the sealing part 401. A motor 5 is fixedly installed on the top of the test platform 3. The output end of the motor 5 and the central axis of the rotating table 7 both extend into the interior of the test platform 3 and are connected by a synchronous pulley and a synchronous belt. Fixed components are arranged inside the test slots 8 for fixing the object to be tested. Electrical connection components are arranged inside the test slots 8 for electrically connecting the test component 2 with the object to be tested. A controller is installed inside the cabinet 1. A temperature and humidity sensor is installed inside the operation part 402. The temperature and humidity sensor and the controller are both electrically connected to an external temperature and humidity air-conditioning device. The output pipe 31 of the external temperature and humidity air-conditioning device communicates with the operation part 402 through a pipeline.

[0032] The test component 2 includes: a surge generation module for generating corresponding surge waveforms according to the test standards; a coupling and decoupling network module, including a coupling network and a decoupling network. The coupling network is used to inject lightning surge signals into the device under test, while ensuring that the supply voltage of the device under test will not reverse into the combined wave generator or will not affect the communication between the device under test and the auxiliary device. The decoupling network is used to prevent lightning surge signals from passing into the back end of the network, while avoiding the test level of the injection port not meeting the requirements due to the voltage division of the lightning surge signals.

[0033] In this embodiment, by setting up the environmental manufacturing module, an external temperature and humidity air-conditioning device is used to manufacture a temperature and humidity environment that meets the test standards, so as to improve the accuracy of the test. The test environment is the sealed cabin 4. When the object to be tested (EUT) is placed in the sealed cabin 4, it needs to go through a transition. Therefore, when taking and placing the object to be tested, the environment in the sealed cabin 4 will not be damaged. Therefore, there is no need to reconstruct the environment during the subsequent test process, saving the implementation cost and improving the test efficiency at the same time. Specifically, place the object to be tested in the test tank 8 and fix it using the fixing component. Connect the test component 2 to the object to be tested through the electrical connection component. After the connection is completed, control the motor 5 to work. Drive the turntable 6 and the turntable 7 to rotate through the synchronous pulley and synchronous belt drive. The motor 5 is a stepper motor 5. Set the number of test tanks 8 to n, and its working mode is to rotate 360° / n each time. This solution is analyzed based on the case where the number of test tanks 8 is four. The turntable 7 rotates 90° each time. The test tank 8 facing the placement port 53 is used to place the object to be tested. After the turntable 7 rotates twice, the object to be tested enters the operation part 402. The operation part 402 is controlled by an external temperature and humidity air-conditioning device and a temperature and humidity sensor to control the temperature and humidity. After the object to be tested enters the operation part 402, it immediately enters a suitable test environment and can directly start the test; it should be particularly noted that during the test of the object to be tested located in the operation part 402, the object to be tested can be taken and placed in the test tank 8 facing the placement port 53 at the same time; and since the operation part 402 is not connected to the external environment, the problem of damaging the test environment during the material taking and placing process is avoided, improving the test efficiency and saving the test cost at the same time.

[0034] Embodiment 2 As Figure 4 , Figure 5 and Figure 8 shown, on the basis of Embodiment 1, the present invention provides a technical solution: Preferably, the electrical connection component includes an installation groove 10 opened at the central position of the turntable 7. The top view of the installation groove 10 is a regular polygon structure. The number of sides of the top view of the installation groove 10 is equal to and corresponds one by one to the number of test tanks 8. Two contact heads 13 are fixedly connected to each side of the inner wall of the installation groove 10. One end of each contact head 13 extends into the test tank 8 and is connected to a spring clip through a wire. An installation cylinder 9 is fixedly connected to the top of the inner wall of the sealed chamber 4. Two pantographs 12 are connected to the installation cylinder 9. The pantographs 12 are used in cooperation with the contact heads 13. Conductive rods 11 are fixedly connected to the concave sides of the pantographs 12. The conductive rods 11 are electrically connected to the test component 2.

[0035] Since the test environment is airtight and isolated from the environment where the object to be tested is placed, it is not convenient to directly connect the wires at the position of the placement port 53. Therefore, it is necessary to set a connection method, that is, to automatically electrically connect to the test equipment after the object to be tested is sent into the operation part 402; In this embodiment, the two terminals of the test device are respectively butted against the two pantographs 12 on the mounting cylinder 9. The mounting cylinder 9 and the sealing cabin 4 are both fixed. The pantograph 12 faces the direction where the operation part 402 is located. Two contact heads 13 are arranged on each side of the inner wall of the mounting groove 10 and are correspondingly connected to the spring clips 52. During installation, the two spring clips 52 are respectively connected to both ends of the motor 5 of the object to be tested. When the test groove 8 rotates to the operation part 402, the contact heads 13 corresponding to the spring clips 52 in the test groove 8 come into contact with the pantograph 12, so that the object to be tested is electrically connected to the test component 2 through the spring clips 52, the contact heads 13, the pantograph 12 and the conductive rod 11. Through the above structure, after the object to be tested is fixed in the test groove 8, only the corresponding spring clip 52 needs to be connected to the object to be tested. However, at this time, the test device is not directly electrically connected to the object to be tested that has not entered the operation part 402. When the test groove 8 rotates to the operation part 402, the test device is electrically connected to the object to be tested.

[0036] Embodiment 3 As Figure 7 , Figure 8 and Figure 9 shown, on the basis of Embodiment 2, the present invention provides a technical solution: Preferably, a driving bevel gear 14 is fixedly connected to the central position inside the mounting groove 10. Two fixing plates 15 are symmetrically and fixedly connected to the bottom of the mounting cylinder 9. A driven bevel gear 16 is rotatably connected to one side of one of the fixing plates 15. The driven bevel gear 16 is meshed with the driving bevel gear 14. Two first sliding rods 17 are fixedly connected between the two fixing plates 15 close to each other. A sliding cylinder 18 is slidably connected between the two first sliding rods 17. A top block 21 is fixedly connected to the inside of the sliding cylinder 18. One end of the central axis of the driven bevel gear 16 extends to the side where the two fixing plates 15 are close to each other and is fixedly connected with an end face cam 19. The end face cam 19 is used in cooperation with the top block 21. One end of the sliding cylinder 18 is fixedly connected with a linkage rod 32. The conductive rod 11 is slidably connected to the mounting cylinder 9. The ends of the two conductive rods 11 away from the pantograph 12 both extend to the inside of the mounting cylinder 9 and are fixedly connected with an insulating plate 27 therebetween. A dial 29 is fixedly connected to the bottom of the insulating plate 27. The bottom of the dial 29 has a forked opening. The end of the linkage rod 32 away from the sliding cylinder 18 passes through the forked opening and is fixedly connected with a support plate 33. A sleeve 22 is fixedly connected to the side of the inner wall of the mounting cylinder 9 away from the conductive rod 11. A sliding plate 26 is slidably connected between the inner walls of the sleeve 22. A connecting rod 28 is fixedly connected between the side of the sliding plate 26 close to the insulating plate 27. A first spring 25 is fixedly connected between the side of the sliding plate 26 away from the connecting rod 28 and one side of the inner wall of the sleeve 22.

[0037] In the above solution, the contact 13 needs to rotate around the center of the turntable 7 and needs to be electrically connected by contacting the pantograph 12. However, if the two are in direct contact and relatively move, it will inevitably cause significant wear during use, affecting the service life of the equipment. In the actual use process, the pantograph 12 and the contact 13 need to be continuously replaced; In this embodiment, during the rotation of the turntable 7, the pantograph 12 is temporarily retracted through transmission, that is, the pantograph 12 is in a retracted state and does not directly contact the contact 13 during the rotation process until the turntable 7 stops rotating, the pantograph 12 is reset and contacts the contact 13, thus avoiding the problem of frictional loss between the two; Specifically, during the relative rotation of the turntable 7, the driven bevel gear 16 revolves around the center of the driving bevel gear 14. Due to their meshing, the driven bevel gear 16 rotates, driving the end face cam 19 to rotate. The arc surface on the end face cam 19 intermittently presses the top block 21, causing the sliding cylinder 18 to move towards the driven bevel gear 16, driving the linkage rod 32 and the support plate 33 to move, thereby pushing the dial 29 and the insulating plate 27 to move, driving the conductive rod 11 and the pantograph 12 to move towards the installation cylinder 9 side. At the same time, the sliding plate 26 is driven to move by the connecting rod 28, compressing the first spring 25; when the arc surface of the end face cam 19 stops pressing the top block 21, the sliding plate 26, the connecting rod 28, the insulating plate 27, the conductive rod 11 and the pantograph 12 are pushed to reset under the elastic force of the first spring 25. At the same time, the support plate 33 is pushed to reset by the dial 29, further resetting the linkage rod 32 and the sliding cylinder 18. During the above process, the pantograph 12 is in a reciprocating motion state with the rotation of the turntable 7, thus reducing the contact time with the contact 13 and reducing wear.

[0038] Embodiment 4 As Figure 6 、 Figure 7 and Figure 8 shown, on the basis of Embodiment 3, the present invention provides a technical solution: Preferably, the sleeve 22 is provided as a piston cylinder, the sliding plate 26 is provided as a piston plate, the side wall of the sliding plate 26 is closely attached to the inner wall of the sleeve 22, the sleeve 22 is provided with an air inlet pipe 24 and an air outlet pipe 23, and one-way valves are arranged inside both the air inlet pipe 24 and the air outlet pipe 23. The diameter of the air outlet pipe 23 is larger than that of the air inlet pipe 24.

[0039] Based on the above solution, the wear is reduced by retracting the pantograph 12 along with the movement of the turntable 7. However, during the movement process, the pantograph 12 moves reciprocally, and there is still a small amount of time during which the pantograph 12 contacts the contact 13, and there is still a small amount of wear; In this embodiment, a deceleration structure is provided to slow down the resetting speed of the pantograph 12, so that the pantograph 12 can be pushed away from the contact 13 again before resetting, so as to achieve that the pantograph 12 does not contact the contact 13 during the whole process; specifically, in the above process, the sliding plate 26 is pushed by the connecting rod 28 to move, and the sliding plate 26 (piston plate) moves deep into the sleeve 22 (piston cylinder), so that a positive pressure is generated inside the sleeve 22. In this process, the one-way valve in the air outlet pipe 23 is turned on, and the one-way valve in the air inlet pipe 24 is blocked, so that the first spring 25 is squeezed and the air inside the sleeve 22 is discharged from the air outlet pipe 23; and in the resetting process, the first spring 25 rebounds and pushes the sliding plate 26 to reset. In this process, the sleeve A negative pressure is generated inside 22, so that the one-way valve in the air inlet pipe 24 is turned on and the one-way valve in the air outlet pipe 23 is blocked. However, due to the limitation of the diameter of the air inlet pipe 24, the entry of external air is restricted, thereby limiting the reset of the slide plate 26 under the action of air pressure. If the turntable 7 is still rotating, the slide plate 26 will be pushed again to the side close to the first spring 25 by the connecting rod 28 before it resets to the initial state, so that the pantograph 12 will never reset to contact with the contact 13 before the turntable 7 stops rotating, thereby avoiding wear. On the other hand, due to the above-mentioned speed limiting effect, the reset process of the pantograph 12 is slow, thereby reducing the impact between the pantograph 12 and the contact 13 and improving the service life.

[0040] It should be particularly noted that, when one of the test slots 8 is facing the placement port 53, the opposite test slot 8 is facing the center of the operating portion 402. Correspondingly, at this time, the top block 21 is in contact with the most concave side of the arc surface of the end face cam 19, that is, the support plate 33 is in the state farthest from the driven bevel gear 16.

[0041] like Figure 3 , Figure 4 and Figure 13 As shown, preferably, four test slots 8 are provided, the sealing portion 401 is provided as a cylindrical structure, and an air supply pipe 30 is fixedly connected to a portion at 90° relative to the placement port 53 and the center of the sealing portion 401, the air supply pipe 30 is located opposite to the activity path of the test slot 8, one of the air supply pipes 30 is connected to the air outlet pipe 23, and the other air supply pipe 30 is connected to the air inlet pipe 24, the sealing portion 401 is symmetrically provided with an input pipe 20 and an output pipe 31, the input pipe 20 and the output pipe 31 are both perpendicular to the direction of the placement port 53, and a one-way valve is provided inside the input pipe 20 and the output pipe 31, and guide grooves 51 are provided on both sides of the inner wall of the sealed cabin 4, one of the guide grooves 51 has two ends respectively connected to the input pipe 20 and one of the air supply pipes 30, and the other of the guide grooves 51 has two ends respectively connected to the output pipe 31 and the other air supply pipe 30.

[0042] In the above solution, the method of rotating the turntable 7 to send the object to be measured into the operation part 402 is used to reduce the escape of air inside the sealed chamber 4. However, each rotation will still bring out the air in the test tank 8 and send the air in the subsequent test tank 8 sent in into the sealed chamber 4, causing damage to the environment inside the chamber. Therefore, it is necessary to optimize to reduce the damage to the environment inside the chamber; Refer to Figure 10 , set the direction of the arrow in the figure as the rotation direction of the turntable 7. Among them, area Ⅰ is the test tank 8 facing the placement port 53 for placing the object to be measured, area Ⅲ is the test tank 8 where the test is carried out in the operation part 402, and both area Ⅱ and area Ⅳ are transition parts; among them, an output pipe 31 and one of the air supply pipes 30 are arranged on the sealed chamber 4 corresponding to the position of area Ⅱ, and an input pipe 20 and the other air supply pipe 30 are arranged on the sealed chamber 4 corresponding to the position of area Ⅳ. In this embodiment, according to the rotation direction of the turntable 7, it can be known that area Ⅳ carries air that meets the test conditions (brought out from the operation part 402), while area Ⅱ carries external air. When passing through this state, since air is simultaneously pumped out through the intake pipe 24 and exhausted through the exhaust pipe 23, and the intake pipe 24 is connected to area Ⅳ through the air supply pipe 30, the air in area Ⅱ will be pumped into the inside of the sleeve 22 (at the same time, external air enters area Ⅳ through the input pipe 20 to balance the air pressure), and is discharged to area Ⅱ through the exhaust pipe 23 and the other air supply pipe 30, and at the same time, the air in area Ⅱ is squeezed out from the output pipe 31. After the above operations, the air in area Ⅱ better meets the test requirements, reduces the damage to the environment caused by sending the object to be measured each time, and saves the implementation cost; Among them, the one-way valve inside the input pipe 20 can only conduct unidirectionally from the outside to the sealed chamber 4, and the one-way valve inside the output pipe 31 can only conduct unidirectionally from the sealed chamber 4 to the external environment.

[0043] Embodiment 5 As Figure 7 、 Figure 11 And Figure 12 shown, on the basis of Embodiment 4, the present invention provides a technical solution: Preferably, the fixing assembly includes two strip-shaped grooves 34 symmetrically opened inside the test tank 8. A second sliding rod 35 is fixedly connected between the top and bottom of the two strip-shaped grooves 34. A lifting plate 36 is slidably connected between the two second sliding rods 35. A second spring 48 is sleeved outside the second sliding rod 35 and above the lifting plate 36. The top of the lifting plate 36 is symmetrically slidably connected with guide rods 37. The top of the guide rods 37 is fixedly connected with limit blocks 41. The bottom of the guide rods 37 extends below the lifting plate 36 and is fixedly connected with a pressing plate 39. A flexible pad 40 is fixedly connected to the bottom of the pressing plate 39. A third spring 38 is sleeved on the guide rods 37 between the pressing plate 39 and the lifting plate 36. A handle is fixedly connected to the top of the lifting plate 36.

[0044] In this embodiment, by pulling the handle upward, the lifting plate 36 is driven to move upward, squeezing the third springs 38 on both sides, and at the same time driving the pressure plate 39 upward through the limit block 41 and the guide rod 37 until the height is sufficient to place the object to be tested. At this time, the object to be tested can be placed in the test slot 8, and then the handle is slowly released, so that the lifting plate 36 can be pushed to reset under the elastic force of the third spring 38 until the flexible pad 40 contacts the object to be tested. The flexible pad 40 can be made of rubber material to reduce damage to the object to be tested. The elastic coefficient of the third spring 38 is greater than that of the second spring 48, and the second spring 48 will also be compressed in the fixed state.

[0045] like Figure 7 , Figure 11 and Figure 12 As shown, preferably, two mounting blocks 42 are symmetrically fixedly connected to both sides of the lifting plate 36, and a pressure rod 43 is slidably connected to each mounting block 42. The ends of the two pressure rods 43 on the same side that are far away from each other are fixedly connected to a clamping block 44, and the ends that are close to each other are fixedly connected to a wedge block 46. A fourth spring 47 is sleeved on the outside of the pressure rod 43 and between the wedge block 46 and the mounting block 42. Two action blocks 54 are symmetrically fixedly connected to the top of the pressure plate 39, and the two corners of the top of the action block 54 are in contact with the inclined surface of the wedge block 46. The inner wall of the test groove 8 is located on both sides of the strip groove 34 and is fixedly connected with friction strips 45, and the friction strips 45 are squeezed and fitted with the clamping block 44.

[0046] Since the above fixation needs to rely on the elastic force of the third spring 38 for compression, but the magnitude of the elastic force is affected by the squeezing degree of the third spring 38 itself, the larger the object to be tested is, the greater the compression force is, so it is easy to damage the large object to be tested; In this embodiment, a structure is provided to balance the clamping force, thereby avoiding the problem of excessive clamping force applied to large-volume equipment; specifically, when the pad (through the flexible pad 40) presses the object to be measured, the guide rod 37 and the limit block 41 are pushed upward by the reaction force, compressing the second spring 48, and at the same time, the inclined surface on the wedge block 46 is pushed upward by the action block 54, pushing the two wedge blocks 46 to move away from each other, and the friction block is pushed to move away from each other by the pressure rod 43, squeezing the friction strip 45, so that the lifting plate 36 as a whole obtains a friction force in the opposite direction to the third spring 38 in the vertical direction, so as to share the force acting on the object to be measured, thereby avoiding damage to the object to be measured.

[0047] like Figure 2 and Figure 4 As shown, preferably, a U-shaped plate 50 is fixedly connected to one side of the cabinet 1 , and two L-shaped plates 49 are symmetrically fixedly connected to one side of the test platform 3 , and the L-shaped plates 49 are plugged into the inner side of the U-shaped plate 50 .

[0048] In this embodiment, the test platform 3 can be fixed to one side of the cabinet body 1 by inserting the L-shaped plate 49 downward into the gap between the U-shaped plate 50 and the cabinet body 1, thereby facilitating the combined operation of the two. The side wall of the L-shaped plate 49 is in contact with both the inner side of the U-shaped plate 50 and the cabinet body 1, ensuring that there is no shaking during the operation.

[0049] The above has generally described the present invention in detail. However, based on the present invention, some modifications or improvements can be made, which are obvious to those of ordinary skill in the technical field. Therefore, modifications or improvements made without departing from the spirit of the present invention are within the protection scope of the present invention.

Claims

1. A lightning surge test device, comprising a cabinet body (1) and a test component (2) installed inside the cabinet body (1), wherein the test component (2) is used to perform a lightning surge immunity test on an object to be tested; characterized in that: It also includes an environment manufacturing module for manufacturing a test environment that meets the detection standards; the environment manufacturing module includes a test platform (3), a turntable (6) is rotatably connected to the top of the test platform (3), a turntable (7) is fixedly connected to the top of the turntable (6), a number of test slots (8) are equidistantly arranged on the side wall of the turntable (7), a sealed cabin (4) is fixedly connected to the top of the test platform (3), the sealed cabin (4) includes a sealing part (401) and an operation part (402), the sealed cabin (4) is in close fit with the turntable (7) and the turntable (6), a placement opening (53) is provided on one side of the sealing part (401), a motor (5) is fixedly installed on the top of the test platform (3), the output ends of the motor (5) and the central axis of the turntable (7) both extend to the inside of the test platform (3) and are connected by a synchronous pulley and a synchronous belt; fixing components are arranged inside the test slots (8), and the fixing components are used to fix the object to be tested; an electrical connection component is arranged inside the test slot (8), and the electrical connection component is used to electrically connect the test component (2) with the object to be tested; a controller is installed inside the cabinet (1), a temperature and humidity sensor is installed inside the operation part (402), the temperature and humidity sensor and the controller are both electrically connected to an external temperature and humidity air-conditioning device, and the output pipe (31) of the external temperature and humidity air-conditioning device communicates with the operation part (402) through a pipeline.

2. The lightning surge test device according to claim 1, characterized in that: The electrical connection component includes a mounting groove (10) opened at the central position of the turntable (7), the top view of the mounting groove (10) is a regular polygon structure, the number of sides is equal to and corresponds one by one to the number of test slots (8), two contact heads (13) are fixedly connected to each side of the inner wall of the mounting groove (10), one ends of the contact heads (13) all extend to the inside of the test slot (8) and are connected with a spring clip (52) through a wire, an installation cylinder (9) is fixedly connected to the top of the inner wall of the sealed cabin (4), two pantographs (12) are connected to the installation cylinder (9), the pantographs (12) are used in cooperation with the contact heads (13), conductive rods (11) are fixedly connected to the concave sides of the pantographs (12), and the conductive rods (11) are electrically connected to the test component (2).

3. The lightning surge test device according to claim 2, characterized in that: A driving bevel gear (14) is fixedly connected to the central position inside the mounting groove (10). Two fixing plates (15) are symmetrically and fixedly connected to the bottom of the mounting cylinder (9). A driven bevel gear (16) is rotatably connected to one side of one of the fixing plates (15). The driven bevel gear (16) is meshed with the driving bevel gear (14). Two first sliding rods (17) are fixedly connected between the two fixing plates (15) close to each other. A sliding cylinder (18) is slidably connected between the two first sliding rods (17). A top block (21) is fixedly connected to the inside of the sliding cylinder (18). One end of the central axis of the driven bevel gear (16) extends to the side where the two fixing plates (15) are close to each other and is fixedly connected with an end face cam (19). The end face cam (19) is used in cooperation with the top block (21). One end of the sliding cylinder (18) is fixedly connected with a linkage rod (32). The conductive rod (11) is slidably connected to the mounting cylinder (9). The ends of the two conductive rods (11) far away from the pantograph (12) both extend into the mounting cylinder (9) and an insulating plate (27) is fixedly connected between them. A dial (29) is fixedly connected to the bottom of the insulating plate (27). The bottom of the dial (29) has a forked opening. The end of the linkage rod (32) far away from the sliding cylinder (18) passes through the forked opening and is fixedly connected with a support plate (33). A sleeve (22) is fixedly connected to the inner wall of the mounting cylinder (9) far away from the conductive rod (11). A sliding plate (26) is slidably connected between the inner walls of the sleeve (22). A connecting rod (28) is fixedly connected between the side of the sliding plate (26) close to the insulating plate (27). A first spring (25) is fixedly connected between the side of the sliding plate (26) far away from the connecting rod (28) and one side of the inner wall of the sleeve (22).

4. The lightning surge test device according to claim 3, characterized in that: The sleeve (22) is arranged as a piston cylinder, the sliding plate (26) is arranged as a piston plate, the side wall of the sliding plate (26) is closely attached to the inner wall of the sleeve (22). An air inlet pipe (24) and an air outlet pipe (23) are arranged on the sleeve (22). Check valves are arranged inside both the air inlet pipe (24) and the air outlet pipe (23). The diameter of the air outlet pipe (23) is larger than that of the air inlet pipe (24).

5. The lightning surge test device according to claim 4, characterized in that: There are four test tanks (8) provided. The sealing part (401) is arranged in a cylindrical structure, and an air supply pipe (30) is fixedly connected to a part of the sealing part (401) that is 90° relative to the center of the placement port (53). The position where the air supply pipe (30) is located is directly opposite to the movement path of the test tank (8). One of the air supply pipes (30) is communicated with the air outlet pipe (23), and the other air supply pipe (30) is communicated with the air inlet pipe (24). An input pipe (20) and an output pipe (31) are symmetrically arranged on the sealing part (401). Both the input pipe (20) and the output pipe (31) are perpendicular to the orientation of the placement port (53). Check valves are arranged inside both the input pipe (20) and the output pipe (31). Guide grooves (51) are opened on both sides of the inner wall of the sealed cabin (4). One of the guide grooves (51) is communicated with the input pipe (20) and one of the air supply pipes (30) at both ends respectively, and the other guide groove (51) is communicated with the output pipe (31) and the other air supply pipe (30) at both ends respectively.

6. The lightning surge test device according to claim 5, wherein: The fixing assembly includes two strip-shaped grooves (34) symmetrically opened inside the test tank (8). A second sliding rod (35) is fixedly connected between the top and the bottom of the two strip-shaped grooves (34). A lifting plate (36) is slidably connected between the two second sliding rods (35). A second spring (48) is sleeved outside the second sliding rod (35) and above the lifting plate (36). Guide rods (37) are symmetrically and slidably connected to the top of the lifting plate (36). A limiting block (41) is fixedly connected to the top of the guide rod (37). The bottom of the guide rod (37) extends below the lifting plate (36) and is fixedly connected to a pressing plate (39). A flexible pad (40) is fixedly connected to the bottom of the pressing plate (39). A third spring (38) is sleeved outside the guide rod (37) between the pressing plate (39) and the lifting plate (36). A handle is fixedly connected to the top of the lifting plate (36).

7. The lightning surge test device according to claim 6, characterized in that: Two mounting blocks (42) are symmetrically and fixedly connected to both sides of the lifting plate (36). A pressing rod (43) is slidably connected to each mounting block (42). Tightening blocks (44) are fixedly connected to the ends of the two pressing rods (43) on the same side that are away from each other, and wedge blocks (46) are fixedly connected to the ends that are close to each other. A fourth spring (47) is sleeved outside the pressing rod (43) between the wedge block (46) and the mounting block (42). Two acting blocks (54) are symmetrically and fixedly connected to the top of the pressing plate (39). The two corners at the top of the acting block (54) are in contact with the inclined surfaces of the wedge blocks (46). Friction strips (45) are fixedly connected to both sides of the inner wall of the test tank (8) where the strip-shaped grooves (34) are located. The friction strips (45) are in extrusion fit with the tightening blocks (44).

8. The lightning surge test device according to claim 7, wherein: A U-shaped plate (50) is fixedly connected to one side of the cabinet body (1). Two L-shaped plates (49) are symmetrically and fixedly connected to one side of the test platform (3). The L-shaped plates (49) are inserted into the inner side of the U-shaped plate (50).

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