Felt pressing equipment for flame retardant felt production

Abstract

This utility model relates to the field of felt pressing technology and discloses a felt pressing device for producing flame-retardant felt, including a support frame. A driven roller shaft is rotatably connected to the inner wall of the support frame, and a motor is fixedly installed on the outer wall of the support frame. A coupling is fixedly sleeved on the outer edge of the output shaft of the motor. A first rotating shaft is fixedly sleeved on the inner wall of the coupling. An active roller shaft and a main gear are fixedly sleeved on the outer wall of the first rotating shaft. A magnetic suction plate is embedded on the outer wall of the active roller shaft. A cleaning component is provided on the inner wall of the support frame. By using the extension and retraction of the control cylinder to drive the lower neodymium magnet to slide, and using magnetic repulsion to drive the upper neodymium magnet and lever to move, combined with the buffering and resetting effect of the first spring, the spacing can be smoothly adjusted. This not only meets the pressing requirements of flame-retardant felt of different thicknesses, but also has a rapid response in the adjustment process. Therefore, it can adapt to diverse production tasks and effectively improve the applicability and practicality of the equipment.

Description

Technical Field

[0001] This utility model relates to the field of felt pressing technology, specifically to felt pressing equipment for the production of flame-retardant felt. Background Technology

[0002] Flame retardant felt production pressing equipment is a special equipment designed specifically for the flame retardant felt pressing process. It aims to achieve efficient pressing, impurity removal, and adaptable production of flame retardant felt through an integrated structure, and is widely used in flame retardant felt manufacturing.

[0003] The roller spacing adjustment of existing felt pressing equipment is usually achieved by hydraulic pressure. However, since the production and pressing of flame retardant felt requires high temperatures, these temperatures can cause damage to the hydraulic seals and hydraulic oil leakage. This can lead to deviations in the adjustment of the flame retardant felt pressing spacing, resulting in unstable pressing quality, making it difficult to adapt to diverse production tasks and limiting the applicability of the equipment. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a felt pressing device for producing flame-retardant felt, which has the advantages of adjustable spacing and automatic cleaning of the roller surface, thus solving the problems mentioned in the background art.

[0005] This utility model provides the following technical solution: a felt pressing device for producing flame-retardant felt, comprising a support frame, a driven roller shaft rotatably connected to the inner wall of the support frame, a motor fixedly installed on the outer wall of the support frame, a coupling fixedly sleeved on the outer edge of the output shaft of the motor, a first rotating shaft fixedly sleeved on the inner wall of the coupling, a driving roller shaft and a main gear fixedly sleeved on the outer wall of the first rotating shaft respectively, a magnetic suction plate embedded in the outer wall of the driving roller shaft, a cleaning component provided on the inner wall of the support frame, a first groove and a second groove respectively opened on the inner wall of the support frame, a support plate slidably connected to the inner wall of the first groove, a first spring provided at the bottom of the support plate, a fisheye connector fixedly installed on the top of the support plate, a support point fixedly installed on the outer wall of the support frame, a lever rotatably connected to the inner wall of the support point, an upper neodymium magnet provided in the inner cavity of the second groove, a cylinder fixedly installed on the inner wall of the second groove, a lower neodymium magnet embedded in the telescopic end of the cylinder, and a second spring provided on the top of the upper neodymium magnet.

[0006] As a preferred technical solution of this utility model: the cleaning component includes a cleaning roller fixedly installed on the inner wall of the support frame, a second rotating shaft rotatably connected to the inner wall of the cleaning roller, a secondary tooth fixedly sleeved on the outer wall of the second rotating shaft, a spiral shaft fixedly installed on the outer wall of the cleaning roller, a discharge pipe provided at the bottom of the cleaning roller, a feed inlet opened on the outer wall of the cleaning roller, a groove opened on the inner wall of the cleaning roller, and a third spring and a scraper respectively provided in the inner cavity of the groove.

[0007] As a preferred technical solution of this utility model: the outer edge of the gear teeth of the second rotating shaft is staggered and meshed with the outer edge of the gear teeth of the main gear; the spiral shaft is located in the inner cavity of the cleaning roller and has a conical cross-section; the discharge pipe is connected to the discharge end of the cleaning roller; the outer wall of the scraper is slidably fitted against the inner wall of the groove; the outer edge of the scraper is slidably fitted against the outer wall of the drive roller shaft; the third spring is located at the bottom of the scraper, with one end overlapping the bottom of the scraper and the other end overlapping the inner wall of the groove; the shape of the outer wall of the scraper is larger than the opening shape of the groove.

[0008] As a preferred technical solution of this utility model: there are three magnetic plates, which are arranged in a circular array with a spacing of 120 degrees.

[0009] As a preferred technical solution of this utility model: the support frame, slide groove one, slide groove two, support plate, first spring, fisheye connector, support point, lever, cylinder, lower neodymium magnet, upper neodymium magnet and second spring are regarded as a set of movable components, and there are two sets of such movable components, which are respectively arranged on both sides of the outer wall of the active roller shaft.

[0010] As a preferred technical solution of this utility model: the outer walls of the two lower rubidium magnets are slidably fitted to the inner wall of the second slide groove, the outer walls of the two upper rubidium magnets are slidably fitted to the inner wall of the second slide groove, the tops of the two lower rubidium magnets and the bottoms of the upper rubidium magnets are S poles respectively, and they are magnetically repelled, the two second springs are located in the inner cavity of the second slide groove, and one end of each spring overlaps with the top of the upper rubidium magnet, the other end of each spring overlaps with the top of the upper rubidium magnet, the cross-section of the two levers is inclined, one end of each lever is connected and fixed to the upper rubidium magnet, and the other end is rotatably connected to the fisheye connector, one end of each spring overlaps with the bottom of the support plate, and the other end overlaps with the inner wall of the support frame.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] 1. This felt pressing equipment for producing flame-retardant felt utilizes the extension and retraction of a control cylinder to drive the lower neodymium magnet to slide, and uses magnetic repulsion to drive the upper neodymium magnet and lever to move. Combined with the buffering and resetting effect of the first spring, it achieves smooth adjustment of the spacing. This not only meets the pressing requirements of flame-retardant felt of different thicknesses, but also has a rapid response in the adjustment process. Therefore, it can adapt to diverse production tasks and effectively improve the applicability and practicality of the equipment.

[0013] 2. The pressing equipment for producing flame-retardant felt utilizes the magnetic plates on the outer wall of the active roller in a circular array to comprehensively adsorb metallic impurities in the flame-retardant felt, reducing the interference of impurities on the pressing process. At the same time, by using the cooperation of the scraper and the spiral shaft, the impurities adsorbed on the surface of the active roller can be automatically scraped off and collected, avoiding the impact of impurity residue on subsequent pressing, and significantly improving the purity of the flame-retardant felt. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0015] Figure 2 This is a schematic cross-sectional view of the present invention.

[0016] Figure 3 This is a schematic diagram of the active roller structure of this utility model;

[0017] Figure 4 This is a schematic diagram of the cleaning component structure of this utility model;

[0018] Figure 5 This is a schematic diagram of the spacing adjustment structure of this utility model;

[0019] Figure 6 This utility model Figure 2 Enlarged structural diagram at point A in the middle.

[0020] In the diagram: 1. Support frame; 2. Driven roller shaft; 3. Motor; 4. Coupling; 5. First rotating shaft; 6. Driving roller shaft; 7. Main gear; 8. Magnetic suction plate; 9. Cleaning assembly; 10. Slide 1; 11. Slide 2; 12. Support plate; 13. First spring; 14. Fisheye connector; 15. Support point; 16. Lever; 17. Cylinder; 18. Lower neodymium magnet; 19. Upper neodymium magnet; 20. Second spring; 901. Cleaning roller; 902. Second rotating shaft; 903. Secondary gear; 904. Spiral shaft; 905. Discharge pipe; 906. Feed inlet; 907. Groove opening; 908. Third spring; 909. Scraper. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figure 1 - Figure 6A felt pressing device for producing flame-retardant felt includes a support frame 1. A driven roller shaft 2 is rotatably connected to the inner wall of the support frame 1. A motor 3 is fixedly installed on the outer wall of the support frame 1. A coupling 4 is fixedly sleeved on the outer edge of the output shaft of the motor 3. A first rotating shaft 5 is fixedly sleeved on the inner wall of the coupling 4. An active roller shaft 6 and a main gear 7 are fixedly sleeved on the outer wall of the first rotating shaft 5. A magnetic suction plate 8 is embedded on the outer wall of the active roller shaft 6. A cleaning component 9 is provided on the inner wall of the support frame 1. A sliding groove 10 and a sliding groove 10 are respectively opened on the inner wall of the support frame 1. The inner wall of the second groove 11 and the first groove 10 is slidably connected to a support plate 12. The bottom of the support plate 12 is provided with a first spring 13. The top of the support plate 12 is fixedly installed with a fisheye connector 14. The outer wall of the support frame 1 is fixedly installed with a support point 15. The inner wall of the support point 15 is rotatably connected with a lever 16. The inner cavity of the second groove 11 is provided with an upper neodymium magnet 19. The inner wall of the second groove 11 is fixedly installed with a cylinder 17. The telescopic end of the cylinder 17 is inlaid with a lower neodymium magnet 18. The top of the upper neodymium magnet 19 is provided with a second spring 20.

[0023] In the above structure, the output shaft of the motor 3 drives the coupling 4 to rotate, which in turn drives the first rotating shaft 5 to rotate synchronously, so that the active roller shaft 6 on the first rotating shaft 5 cooperates with the driven roller shaft 2 to realize the pressing and transmission of the flame retardant felt. At the same time, the first rotating shaft 5 drives the main gear 7 to rotate, providing a power source for the cleaning component 9.

[0024] In a preferred embodiment: the cleaning assembly 9 includes a cleaning roller 901 fixedly installed on the inner wall of the support frame 1, a second rotating shaft 902 rotatably connected to the inner wall of the cleaning roller 901, a secondary tooth 903 fixedly sleeved on the outer wall of the second rotating shaft 902, a spiral shaft 904 fixedly installed on the outer wall of the cleaning roller 901, a discharge pipe 905 provided at the bottom of the cleaning roller 901, a feed inlet 906 opened on the outer wall of the cleaning roller 901, a groove 907 opened on the inner wall of the cleaning roller 901, and a third spring 908 and a scraper 909 respectively provided in the inner cavity of the groove 907;

[0025] In a preferred embodiment: the outer edge of the gear teeth of the second rotating shaft 902 is interlocked with the outer edge of the gear teeth of the main gear 7; the spiral shaft 904 is located in the inner cavity of the cleaning roller 901 and has a conical cross-section; the discharge pipe 905 is connected to the discharge end of the cleaning roller 901; the outer wall of the scraper 909 is slidably attached to the inner wall of the groove 907; the outer edge of the scraper 909 is slidably attached to the outer wall of the drive roller shaft 6; the third spring 908 is located at the bottom of the scraper 909, with one end overlapping the bottom of the scraper 909 and the other end overlapping the inner wall of the groove 907; the shape of the outer wall of the scraper 909 is larger than the shape of the opening of the groove 907.

[0026] In the above structure, by setting the scraper 909, when the active roller 6 presses and drives the flame-retardant felt, the impurities on the surface of the active roller 6 rotate with the active roller 6. At this time, the outer edge of the scraper 909, which is fixedly set on the outer wall of the cleaning roller 901 on one side of the active roller 6, will come into contact with the outer wall of the active roller 6. As the active roller 6 rotates, the impurities will come into contact with the outer edge of the scraper 909, and the scraper 909 will scrape off the impurities. The scraped impurities will be guided to the feed inlet 906 through the inclined scraper 909, and the impurities will enter the inner part of the cleaning roller 901 through the feed inlet 906. In the cavity, the auxiliary tooth 903 rotates due to its outer edge meshing with the main tooth 7, causing the second rotating shaft 902 to rotate under the drive of the auxiliary tooth 903, and driving the conical spiral shaft 904 to rotate. This causes the impurities in the inner cavity of the cleaning roller 901 to be pushed to the discharge pipe 905 through the rotating spiral shaft 904. The discharge pipe 905 can be connected to a collection box to collect the impurities, thereby achieving the effect of cleaning the surface of the active roller 6. Secondly, the scraper 909 can slide along the inner wall of the groove 907 through the third spring 908 at the bottom, and the fit can be adjusted according to the surface and distance of the active roller 6.

[0027] In a preferred embodiment: there are three magnetic plates 8, which are arranged in a circular array with a spacing of 120 degrees.

[0028] In the above structure, by arranging three magnetic plates 8 in a circular array, when the outer edge of the output shaft of the motor 3 rotates in the moving coupling 4, the rotating coupling 4 will synchronously drive the first rotating shaft 5 to rotate, and the active roller 6 fixedly sleeved on the outer wall of the first rotating shaft 5 will rotate accordingly. Then, when the three magnetic plates 8 are arranged at a distance of 120 degrees, they will attract metal impurities to the surface of the flame retardant felt as the active roller 6 rotates, and then proceed to the next step of processing as the active roller 6 rotates.

[0029] In a preferred embodiment: the support frame 1, slide 10, slide 2 11, support plate 12, first spring 13, fisheye connector 14, support point 15, lever 16, cylinder 17, lower neodymium magnet 18, upper neodymium magnet 19 and second spring 20 are regarded as a set of movable components, and there are two sets of such movable components, which are respectively arranged on both sides of the outer wall of the active roller 6.

[0030] In the above structure, by setting the movable components consisting of support frame 1, slide 10, slide 2 11, support plate 12, first spring 13, fisheye connector 14, support point 15, lever 16, cylinder 17, lower neodymium magnet 18, upper neodymium magnet 19 and second spring 20 into two sets and located on both sides of the outer wall of the active roller shaft 6, stable adjustment of the distance between the active roller shaft 6 and the driven roller shaft 2 is achieved. The two sets of components are symmetrically distributed, which can ensure that the active roller shaft 6 is subjected to balanced force during the adjustment process and avoid equipment tilting or adjustment deviation caused by unilateral force.

[0031] In a preferred embodiment: the outer walls of the two lower neodymium magnets 18 are slidably fitted against the inner wall of the second slide groove 11, the outer walls of the two upper neodymium magnets 19 are slidably fitted against the inner wall of the second slide groove 11, the tops of the two lower neodymium magnets 18 and the bottoms of the upper neodymium magnets 19 are S poles respectively, and they are magnetically repelled, the two second springs 20 are located in the inner cavity of the second slide groove 11, and one end is connected to the top of the upper neodymium magnets 19, and the other end is connected to the top of the upper neodymium magnets 19, the cross-section of the two levers 16 is inclined, and one end is connected and fixed to the upper neodymium magnets 19, and the other end is rotatably connected to the fisheye connector 14, one end of the two first springs 13 is connected to the bottom of the support plate 12, and the other end is connected to the inner wall of the support frame 1;

[0032] In the above structure, by activating cylinder 17, the extension end of cylinder 17 drives the lower neodymium magnet 18 to slide upward along the inner wall of the second slide groove 11. This causes the top S pole of the sliding lower neodymium magnet 18 to generate a repulsive magnetic force with the bottom S pole of the upper neodymium magnet 19. Consequently, the upper neodymium magnet 19 slides upward along the inner wall of the second slide groove 11 due to the repulsive magnetic force of the lower neodymium magnet 18. Simultaneously, the sliding upper neodymium magnet 19 compresses the second spring 20 at the top, thus creating the inclined surface. The lever 16, driven by the upper neodymium magnet 19, moves upward synchronously at one end, causing it to rotate around the support point 15. This causes the other end of the lever 16 to move downwards, driving the fisheye connector 14, which is connected to it. The fisheye connector 14 then drives the support plate 12 along the inner wall of the slide groove 10, moving the motor 3, coupling 4, first rotating shaft 5, active roller shaft 6, main gear 7, magnetic suction plate 8, and cleaning assembly 9 towards the driven roller shaft 2. This adjusts the distance between the active roller shaft 6 and the driven roller shaft 2. Furthermore, as the support plate 12 moves downwards, the first spring 13 at the bottom of the support plate 12 is compressed by the pressure of the support plate 12, reducing the distance. Then, when the cylinder 17 extends and retracts, it drives the lower neodymium magnet 18 downwards, weakening the repulsive magnetic field between the lower and upper neodymium magnets 19. This causes the upper neodymium magnet 19 to return to its original position using the rebound of the second spring 20. This process continues sequentially. The downward displacement of the cleaning component 9 causes the lever 16 to move the fisheye connector 14 and the support plate 12 upward along the inner wall of the slide groove 10. Then, the first spring 13 will rebound due to the reduced repulsive force between the upper neodymium magnet 19 and the lower neodymium magnet 18. This increases the distance between the adjusting motor 3, coupling 4, first rotating shaft 5, driving roller 6, main gear 7, magnetic suction plate 8, and cleaning component 9, so as to adjust the thickness according to different requirements when pressing the flame retardant felt.

[0033] Working principle: First, the motor 3 is started, and its output shaft drives the first rotating shaft 5 to rotate through the coupling 4, causing the active roller 6 to rotate synchronously. This interacts with the driven roller 2 on the inner wall of the support frame 1, pressing the flame-retardant felt between the active and driven rollers 6 and 2, thus achieving the initial forming process of the flame-retardant felt. Secondly, during the rotation of the active roller 6, three magnetic suction plates 8, arranged in a circular array with a spacing of 120 degrees on its outer wall, rotate accordingly. When they come into contact with the flame-retardant felt, they adsorb the metallic impurities contained in the felt onto the surface of the active roller 6, which then enter the subsequent processing stage with the rotation of the active roller 6. Simultaneously, the rotation of the first rotating shaft 5 drives the main tooth 7 to rotate. Since the main tooth 7 interacts with the auxiliary tooth 903 on the outer wall of the second rotating shaft 902 in the cleaning component 9... The meshing mechanism causes the secondary gear 903 to drive the second rotating shaft 902 to rotate, which in turn causes the conical spiral shaft 904 inside the cleaning roller 901 to rotate synchronously. When impurities are adsorbed on the surface of the active roller 6 and rotate to the cleaning component 9, the scraper 909 on the outer wall of the cleaning roller 901 slides along the inner wall of the groove 907 under the action of the third spring 908 at the bottom and fits tightly against the outer wall of the active roller 6, scraping off the surface impurities. The scraped impurities are then guided by the inclined scraper 909 and enter the inner cavity of the cleaning roller 901 through the feed port 906. They are then pushed to the discharge pipe 905 by the rotating spiral shaft 904. Finally, the impurities are collected in a collection box connected to the discharge pipe 905, ensuring that the surface of the active roller 6 is clean and preventing impurities from affecting the pressing quality of the flame retardant felt.

[0034] Secondly, if the distance between the active roller 6 and the driven roller 2 needs to be adjusted according to the thickness requirements of the flame-retardant felt, the cylinders 17 located on both sides of the outer wall of the active roller 6 are activated. When the distance needs to be reduced, the telescopic end of the cylinder 17 drives the lower neodymium magnet 18 to slide upward along the inner wall of the slide groove 11, so that the top S pole of the lower neodymium magnet 18 and the bottom S pole of the upper neodymium magnet 19 generate a repulsive force, pushing the upper neodymium magnet 19 upward and compressing the second spring 20. This causes the upper neodymium magnet 19 to drive the lever 16 to rotate around the support point 15, so that the other end of the lever 16 pulls the support plate 12 along the slide groove 11 through the fisheye connector 14. The groove 10 slides down and compresses the first spring 13, causing the active roller 6 to move closer to the driven roller 2, reducing the gap. When the gap needs to be increased, the extension end of the cylinder 17 drives the lower neodymium magnet 18 to slide down along the inner wall of the second groove 11, which weakens the repulsive force between the lower neodymium magnet 18 and the upper neodymium magnet 19. Under the rebound action of the second spring 20, the upper neodymium magnet 19 resets and moves down, causing the lever 16 to rotate in the opposite direction. Under the rebound action of the first spring 13, the support plate 12 moves up along the first groove 10, driving the active roller 6 away from the driven roller 2, increasing the gap, thereby achieving the adjustment of different flame-retardant felt thickness requirements.

[0035] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. Pressing felt equipment for the production of flame-retardant felt, comprising a support frame (1), characterized in that: The inner wall of the support frame (1) is rotatably connected to a driven roller shaft (2), and the outer wall of the support frame (1) is fixedly mounted with a motor (3). The output shaft of the motor (3) is fixedly sleeved with a coupling (4). The inner wall of the coupling (4) is fixedly sleeved with a first rotating shaft (5). The outer wall of the first rotating shaft (5) is fixedly sleeved with a driving roller shaft (6) and a main gear (7). The outer wall of the driving roller shaft (6) is inlaid with a magnetic suction plate (8). The inner wall of the support frame (1) is provided with a cleaning component (9). The inner wall of the support frame (1) is provided with a first groove (10) and a second groove (11). The first groove (10) is provided with a second groove (11). A support plate (12) is slidably connected to the inner wall of the support frame (1). A first spring (13) is provided at the bottom of the support plate (12). A fisheye connector (14) is fixedly installed at the top of the support plate (12). A support point (15) is fixedly installed on the outer wall of the support frame (1). A lever (16) is rotatably connected to the inner wall of the support point (15). An upper neodymium magnet (19) is provided in the inner cavity of the slide groove (11). A cylinder (17) is fixedly installed on the inner wall of the slide groove (11). A lower neodymium magnet (18) is embedded in the telescopic end of the cylinder (17). A second spring (20) is provided at the top of the upper neodymium magnet (19).

2. The press felt apparatus for producing a fire-retardant felt according to claim 1, characterized by: The cleaning assembly (9) includes a cleaning roller (901) fixedly installed on the inner wall of the support frame (1). The inner wall of the cleaning roller (901) is rotatably connected to a second rotating shaft (902). The outer wall of the second rotating shaft (902) is fixedly sleeved with a secondary tooth (903). The outer wall of the cleaning roller (901) is fixedly installed with a spiral shaft (904). The bottom of the cleaning roller (901) is provided with a discharge pipe (905). The outer wall of the cleaning roller (901) is provided with a feed inlet (906). The inner wall of the cleaning roller (901) is provided with a groove (907). The inner cavity of the groove (907) is respectively provided with a third spring (908) and a scraper (909).

3. The press felt apparatus for producing a fire-retardant felt according to claim 2, characterized in that: The outer edge of the gear teeth of the second rotating shaft (902) is interlocked with the outer edge of the gear teeth of the main gear (7). The spiral shaft (904) is located in the inner cavity of the cleaning roller (901) and has a conical cross-section. The discharge pipe (905) is connected to the discharge end of the cleaning roller (901). The outer wall of the scraper (909) is in contact with the inner wall of the groove (907) and slides. The outer edge of the scraper (909) is in contact with the outer wall of the drive roller shaft (6) and slides. The third spring (908) is located at the bottom of the scraper (909), with one end overlapping the bottom of the scraper (909) and the other end overlapping the inner wall of the groove (907). The outer wall shape of the scraper (909) is larger than the opening shape of the groove (907).

4. The press felt apparatus for producing a fire-retardant felt according to claim 1, characterized by: There are three magnetic plates (8), which are arranged in a circular array with a spacing of 120 degrees.

5. The press felt apparatus for producing a fire-retardant felt according to claim 1, characterized by: The support frame (1), slide groove one (10), slide groove two (11), support plate (12), first spring (13), fisheye connector (14), support point (15), lever (16), cylinder (17), lower neodymium magnet (18), upper neodymium magnet (19) and second spring (20) are considered as a set of movable components, and there are two sets of such movable components, which are respectively set on both sides of the outer wall of the active roller shaft (6).

6. The press felt apparatus for producing a fire-retardant felt according to claim 1, characterized by: The outer walls of the two lower rubidium magnets (18) are slidably attached to the inner wall of the second slide groove (11), and the outer walls of the two upper rubidium magnets (19) are slidably attached to the inner wall of the second slide groove (11). The top of the two lower rubidium magnets (18) and the bottom of the upper rubidium magnets (19) are S poles respectively and are magnetically repulsive. The two second springs (20) are located in the inner cavity of the second slide groove (11), and one end is connected to the top of the upper rubidium magnet (19), and the other end is connected to the top of the upper rubidium magnet (19). The cross-section of the two levers (16) is inclined, and one end is connected and fixed to the upper rubidium magnet (19), and the other end is rotatably connected to the fisheye connector (14). One end of the two first springs (13) is connected to the bottom of the support plate (12), and the other end is connected to the inner wall of the support frame (1).

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