A low-voltage harmonic filtering module

Abstract

The present invention discloses a low-voltage harmonic filtering module, which relates to the technical field of circuit devices. This low-voltage harmonic filtering module includes a filter body and a base. A plurality of shock-absorbing mechanisms are arranged between the filter body and the base. Each shock-absorbing mechanism includes an L-shaped plate. A first mounting mechanism is arranged between the bottom of each L-shaped plate and the base. A connecting plate is fixedly connected to the side wall of each L-shaped plate. A circular cover is fixedly connected to the side wall of the connecting plate. A moving column is inserted into the circular cover. A rubber ring is fixedly connected between the moving column and the circular cover. A first spring is fixedly connected between the bottom of the moving column and the circular cover. A second mounting mechanism is arranged between the moving column and the filter body. This low-voltage harmonic filtering module can achieve a good shock-absorbing effect on the filter body, ensure its filtering effect and service life. At the same time, it can consume the energy generated by vibration, making the shock-absorbing effect better.

Description

Technical Field

[0001] The present invention relates to the technical field of circuit devices, and specifically to a low-voltage harmonic filtering module. Background Art

[0002] A low-voltage harmonic filtering module is a device used to filter harmonics in a low-voltage power system. The low-voltage harmonic filtering module is mainly used to filter harmonic currents generated by non-linear loads (such as frequency conversion devices, rectifier devices, etc.) in the low-voltage power system to improve the power quality and protect the stable operation of power equipment and systems. The low-voltage harmonic filtering module usually consists of components such as a filter body, a base, a heat conduction plate, and heat conduction strips. Among them, the filter body is the core component responsible for filtering harmonics, the base is used to fix the filter body, and the heat conduction plate and heat conduction strips are used for heat dissipation to ensure that the filter can still work normally in a high-temperature environment. The low-voltage harmonic filtering module detects the harmonic current in the power system and generates a compensation current with the same magnitude and opposite direction as the harmonic current, thereby canceling out the harmonic current and achieving the purpose of filtering harmonics. At the same time, the module also has a heat dissipation function to ensure that the filter can still maintain stable performance in a high-temperature environment.

[0003] However, when the existing low-voltage harmonic filtering modules are in use, the filter is usually fixed to the base with bolts, and the shock absorption effect is very poor, making the filter easily damaged due to vibration, affecting its filtering effect and service life. Summary of the Invention

[0004] The purpose of the present invention is to provide a low-voltage harmonic filtering module to solve the problems raised in the above background art.

[0005] To achieve the above purpose, the present invention provides the following technical solution: A low-voltage harmonic filtering module, including a filter body and a base, a plurality of shock absorption mechanisms are arranged between the filter body and the base, and each shock absorption mechanism includes an L-shaped plate. A first installation mechanism is arranged between the bottom of each L-shaped plate and the base, and a connecting plate is fixedly connected to the side wall of each L-shaped plate. A circular cover is fixedly connected to the side wall of the connecting plate, and a moving column is inserted into the circular cover. A rubber ring is fixedly connected between the moving column and the circular cover, and a first spring is fixedly connected between the bottom of the moving column and the circular cover. A second installation mechanism is arranged between the moving column and the filter body, and a fixed box is fixedly connected to the side wall of the L-shaped plate. The circular cover is filled with hydraulic oil, the fixed box is filled with damping liquid, and a sliding plate is slidably connected in the fixed box. A plurality of through holes arranged in an array are opened on the top of the sliding plate, and a guide plate is fixedly connected to the top of the sliding plate. The top of the guide plate penetrates through the top of the fixed box, and a friction mechanism is arranged between the guide plate and the L-shaped plate. A second spring is sleeved on the side wall of the guide plate, and the movement of the sliding plate is pushed by a first pushing mechanism and a second pushing mechanism.

[0006] Preferably, the first pushing mechanism includes an L-shaped pipe fixedly inserted into the side wall of the annular cover, and the upper end of the L-shaped pipe is fixedly inserted into the bottom of the fixed box. A first pushing rod is inserted into the L-shaped pipe, and the upper end of the first pushing rod abuts against the bottom of the sliding plate.

[0007] Preferably, the second pushing mechanism includes a rubber disc embedded in the bottom of the annular cover, and a first moving rod is inserted into the bottom of the rubber disc. The moving column is sleeved on the side wall of the first moving rod, and a spherical ball is fixedly connected to the lower end of the first moving rod. The bottom of the L-shaped plate is connected to a second moving rod through a first reset mechanism. The upper end of the second moving rod is fixedly connected to a conical cover, and the spherical ball is inserted into the conical cover. The bottom of the L-shaped plate is rotatably connected to a rotating plate through a rotating mechanism, and a strip-shaped opening is formed in the side wall of the L-shaped plate. The rotating plate is inserted into the strip-shaped opening, and the bottom of the fixed box is connected to a moving block through a second reset mechanism. The top of the moving block is fixedly connected to a second pushing rod, the upper end of the second pushing rod penetrates through the bottom of the fixed box and is fixed to the bottom of the sliding plate, and the bottom of the moving block is fixedly connected to an L-shaped frame.

[0008] Preferably, the friction mechanism includes a first friction block fixedly connected to the side wall of the L-shaped plate, and a second friction block is connected to the side wall of the guide plate through a third reset mechanism.

[0009] Preferably, the first reset mechanism includes an L-shaped block sleeved on the side wall of the second moving rod. The L-shaped block is fixed to the top of the L-shaped plate, and a third spring is sleeved on the side wall of the second moving rod.

[0010] Preferably, the rotating mechanism includes two symmetrically arranged fixed blocks fixedly connected to the bottom of the L-shaped plate, and the rotating plate is rotatably connected to the side wall of the fixed block through a rotating shaft.

[0011] Preferably, the second reset mechanism includes two symmetrically arranged first T-shaped guide rods fixedly connected to the bottom of the fixed box. A slider is sleeved on the side wall of the first T-shaped guide rod. The slider is fixed to the side wall of the moving block, and a fourth spring is sleeved on the side wall of each first T-shaped guide rod.

[0012] Preferably, the third reset mechanism includes two symmetrically arranged second T-shaped guide rods inserted into the side wall of the guide plate. One end of the second T-shaped guide rod is fixed to the side wall of the second friction block, and a fifth spring is sleeved on the side wall of each second T-shaped guide rod.

[0013] Preferably, the first mounting mechanism includes a plurality of first mounting holes formed in the bottom of the base, and a first threaded column is inserted into the first mounting hole. The upper end of the first threaded column is fixed to the bottom of the L-shaped plate, and a first nut is threadedly connected to the side wall of the first threaded column. A first rubber sleeve is sleeved on the side wall of the first threaded column.

[0014] Preferably, the second mounting mechanism includes a plurality of second mounting holes formed in the bottom of the filter body, and a second threaded post is inserted into the second mounting hole. The lower end of the second threaded post is fixed to the top of the moving column, and a second nut is threadedly connected to the side wall of the second threaded post. A second rubber sleeve is sleeved on the side wall of the second threaded post.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0016] For this low-voltage harmonic filtering module, by setting a shock-absorbing mechanism, etc., when in use, first sleeve the first rubber sleeve on the side wall of the first threaded post. Then, insert the first threaded post into the first mounting hole and tighten and fix it with the first nut. Next, sleeve the second rubber sleeve on the side wall of the second threaded post. Then, insert the second threaded post into the second mounting hole and tighten and fix the second nut, thereby realizing the installation and fixation of the filter body and the base. During the use process, when the filter body vibrates in the vertical direction, the moving column can reciprocate in the vertical direction. At this time, the first spring deforms, and at the same time, it can squeeze the hydraulic oil in the annular cover, and can push the first push rod upward, thereby pushing the sliding plate upward. At the same time, the second spring is compressed. At this time, the damping liquid can pass through the through hole, so as to achieve a good damping and buffering effect. When the filter body vibrates in the horizontal direction, the moving column can move in the horizontal direction. At the same time, the rubber ring deforms, and can drive the ball to move through the first moving rod. The rubber disc deforms, so that the ball can slide along the side wall of the conical cover, and can push the second moving rod downward. At the same time, the third spring is compressed. When the second moving rod moves downward, it can push the rotating plate to rotate along the rotating shaft and make the rotating plate abut against the bottom of the L-shaped frame, thereby pushing the moving block and the second push rod upward. The fourth spring is compressed. When the second push rod moves upward, it can also push the sliding plate upward. At the same time, the second spring is compressed. At this time, the damping liquid can pass through the through hole, which can achieve a good damping and buffering effect. And the sliding plate can move downward and reset under the action of the second spring, so as to achieve a good shock-absorbing effect on the filter body, ensuring its filtering effect and service life; by setting a deceleration mechanism, etc., when shock-absorbing, when the sliding plate reciprocates up and down, it can drive the guide plate to move synchronously. At the same time, the second friction block is driven by the third reset mechanism to slide along the first friction block, which can achieve the effect of friction deceleration, so as to consume the energy generated by the vibration and make the shock-absorbing effect better. And under the action of the fifth spring, it can ensure that the second friction block always abuts against the first friction block, ensuring the effect of friction deceleration. Description of the Drawings

[0017] Figure 1 Schematic diagram of the overall structure of the present invention;

[0018] Figure 2 Schematic diagram of the overall structure of the present invention from another perspective;

[0019] Figure 3 Schematic diagram of the position of the buffer mechanism in the present invention;

[0020] Figure 4 is Figure 1 Enlarged structural diagram of part A in;

[0021] Figure 5 is Figure 2 Enlarged structural diagram of part B in;

[0022] Figure 6 is Figure 3 Enlarged structural diagram of part C in;

[0023] Figure 7 is Figure 6 Enlarged structural diagram of part D in;

[0024] Figure 8 is Figure 6 Enlarged structural diagram of part E in.

[0025] In the figure: 1. Filter body; 2. First pushing mechanism; 201. L-shaped tube; 202. First pushing rod; 3. Second pushing mechanism; 301. Rubber disc; 302. First moving rod; 303. Conical cover; 304. Sphere; 305. Rotating plate; 306. L-shaped frame; 307. Strip-shaped opening; 308. Moving block; 309. Second pushing rod; 310. Second moving rod; 4. Friction mechanism; 401. First friction block; 402. Second friction block; 5. Third reset mechanism; 501. Second T-shaped guide rod; 502. Fifth spring; 6. First reset mechanism; 601. L-shaped block; 602. Third spring; 7. Rotating mechanism; 701. Fixed block; 702. Rotating shaft; 8. Second reset mechanism; 801. First T-shaped guide rod; 802. Slide block; 803. Fourth spring; 9. First mounting mechanism; 901. First mounting hole; 902. First threaded column; 903. First nut; 904. First rubber sleeve; 10. Second mounting mechanism; 1001. Second threaded column; 1002. Second nut; 1003. Second mounting hole; 1004. Second rubber sleeve; 11. Base; 12. Shock absorption mechanism; 1201. L-shaped plate; 1202. Connecting plate; 1203. Annular cover; 1204. Moving column; 1205. Rubber ring; 1206. First spring; 1207. Fixed box; 1208. Guide plate; 1209. Sliding plate; 1210. Through hole; 1211. Second spring. Detailed implementation manners

[0026] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0027] Please refer to Figures 1 - 8 , the present invention provides a technical solution: a low-voltage harmonic filtering module, including a filter body 1 and a base 11. A plurality of shock-absorbing mechanisms 12 are provided between the filter body 1 and the base 11. Each shock-absorbing mechanism 12 includes an L-shaped plate 1201. A first mounting mechanism 9 is provided between the bottom of each L-shaped plate 1201 and the base 11. A connecting plate 1202 is fixedly connected to the side wall of each L-shaped plate 1201. A circular cover 1203 is fixedly connected to the side wall of the connecting plate 1202. A moving column 1204 is inserted into the circular cover 1203. A rubber ring 1205 is fixedly connected between the moving column 1204 and the circular cover 1203. A first spring 1206 is fixedly connected between the bottom of the moving column 1204 and the circular cover 1203. A second mounting mechanism 10 is provided between the moving column 1204 and the filter body 1. A fixed box 1207 is fixedly connected to the side wall of the L-shaped plate 1201. The circular cover 1203 is filled with hydraulic oil. The fixed box 1207 is filled with damping liquid. A sliding plate 1209 is slidably connected in the fixed box 1207. A plurality of through holes 1210 arranged in an array are formed in the top of the sliding plate 1209. A guide plate 1208 is fixedly connected to the top of the sliding plate 1209. The top of the guide plate 1208 penetrates through the top of the fixed box 1207. A friction mechanism 4 is provided between the guide plate 1208 and the L-shaped plate 1201. A second spring 1211 is sleeved on the side wall of the guide plate 1208. The movement of the sliding plate 1209 is pushed by a first pushing mechanism 2 and a second pushing mechanism 3, which can achieve a good shock-absorbing effect on the filter body 1, ensure its filtering effect and service life. At the same time, the energy generated by the vibration can be consumed, making the shock-absorbing effect better.

[0028] Please refer to Figure 5 and Figure 6, the first driving mechanism 2 includes an L-shaped pipe 201 fixedly inserted into the side wall of the annular cover 1203, and the upper end of the L-shaped pipe 201 is fixedly inserted into the bottom of the fixed box 1207. A first push rod 202 is inserted into the L-shaped pipe 201, and the upper end of the first push rod 202 abuts against the bottom of the sliding plate 1209. When the filter body 1 vibrates in the vertical direction, the moving column 1204 can reciprocate in the vertical direction. At this time, the first spring 1206 deforms, and at the same time, the hydraulic oil in the annular cover 1203 can be squeezed, and the first push rod 202 can be pushed upward to push the sliding plate 1209 upward. At the same time, the second spring 1211 is compressed. At this time, the damping liquid can pass through the through hole 1210, so as to achieve a good damping and buffering effect.

[0029] Please refer to Figures 6 - 8, the second driving mechanism 3 includes a rubber disk 301 embedded at the bottom of the annular cover 1203, and a first moving rod 302 is inserted at the bottom of the rubber disk 301. A moving column 1204 is sleeved on the side wall of the first moving rod 302, and a spherical ball 304 is fixedly connected to the lower end of the first moving rod 302. The bottom of the L-shaped plate 1201 is connected to a second moving rod 310 through a first reset mechanism 6. The upper end of the second moving rod 310 is fixedly connected to a conical cover 303, and the spherical ball 304 is inserted into the conical cover 303. The bottom of the L-shaped plate 1201 is rotationally connected to a rotating plate 305 through a rotating mechanism 7, and a strip-shaped opening 307 is formed in the side wall of the L-shaped plate 1201. The rotating plate 305 is inserted into the strip-shaped opening 307, and the bottom of the fixed box 1207 is connected to a moving block 308 through a second reset mechanism 8. The top of the moving block 308 is fixedly connected to a second pushing rod 309. The upper end of the second pushing rod 309 penetrates through the bottom of the fixed box 1207 and is fixedly connected to the bottom of the sliding plate 1209, and an L-shaped frame 306 is fixedly connected to the bottom of the moving block 308. When the filter body 1 vibrates in the horizontal direction, the moving column 1204 can move in the horizontal direction. At the same time, the rubber ring 1205 deforms, and the spherical ball 304 can be driven to move through the first moving rod 302. The rubber disk 301 deforms, so that the spherical ball 304 can slide along the side wall of the conical cover 303, and the second moving rod 310 can be pushed to move downward. When the second moving rod 310 moves downward, the rotating plate 305 can be pushed to rotate along the rotating shaft 702, and the rotating plate 305 abuts against the bottom of the L-shaped frame 306, thereby pushing the moving block 308 and the second pushing rod 309 to move upward. When the second pushing rod 309 moves upward, the sliding plate 1209 can also be pushed to move upward. At the same time, the second spring 1211 is compressed. At this time, the damping liquid can pass through the through hole 1210, which can achieve a good damping and buffering effect. Moreover, the sliding plate 1209 can move downward and reset under the action of the second spring 1211, so that a good shock absorption effect can be achieved on the filter body 1, ensuring its filtering effect and service life.

[0030] Please refer to Figure 6 , the friction mechanism 4 includes a first friction block 401 fixedly connected to the side wall of the L-shaped plate 1201, and a second friction block 402 is connected to the side wall of the guide plate 1208 through a third reset mechanism 5. When performing shock absorption, when the sliding plate 1209 moves up and down reciprocally, the guide plate 1208 can be driven to move synchronously. At the same time, the second friction block 402 is driven to slide along the first friction block 401 through the third reset mechanism 5, which can achieve the effect of friction deceleration, thereby consuming the energy generated by the vibration and making the shock absorption effect better.

[0031] Please refer to Figure 7, the first reset mechanism 6 includes an L-shaped block 601 sleeved on the side wall of the second moving rod 310. The L-shaped block 601 is fixed to the top of the L-shaped plate 1201. A third spring 602 is sleeved on the side wall of the second moving rod 310, which plays a role in guiding and resetting the movement of the second moving rod 310.

[0032] Please refer to Figure 7 , the rotating mechanism 7 includes two symmetrically arranged fixed blocks 701 fixedly connected to the bottom of the L-shaped plate 1201. The rotating plate 305 is rotatably connected to the side wall of the fixed block 701 through a rotating shaft 702 to ensure the normal rotation of the rotating plate 305.

[0033] Please refer to Figure 8 , the second reset mechanism 8 includes two symmetrically arranged first T-shaped guide rods 801 fixedly connected to the bottom of the fixed box 1207. A slider 802 is sleeved on the side wall of the first T-shaped guide rod 801. The slider 802 is fixed to the side wall of the moving block 308. A fourth spring 803 is sleeved on the side wall of each first T-shaped guide rod 801, which plays a role in guiding and resetting the movement of the moving block 308.

[0034] Please refer to Figure 6 , the third reset mechanism 5 includes two symmetrically arranged second T-shaped guide rods 501 inserted into the side wall of the guide plate 1208. One end of the second T-shaped guide rod 501 is fixed to the side wall of the second friction block 402. A fifth spring 502 is sleeved on the side wall of each second T-shaped guide rod 501, which plays a role in guiding and resetting the movement of the second friction block 402.

[0035] Please refer to Figure 6 , the first installation mechanism 9 includes a plurality of first installation holes 901 opened at the bottom of the base 11. A first threaded post 902 is inserted into the first installation hole 901. The upper end of the first threaded post 902 is fixed to the bottom of the L-shaped plate 1201. A first nut 903 is threadedly connected to the side wall of the first threaded post 902. A first rubber sleeve 904 is sleeved on the side wall of the first threaded post 902. First, the first rubber sleeve 904 is sleeved on the side wall of the first threaded post 902. Then, the first threaded post 902 is inserted into the first installation hole 901 and tightened and fixed by the first nut 903.

[0036] Please refer to Figure 6, the second mounting mechanism 10 includes a plurality of second mounting holes 1003 formed in the bottom of the filter body 1, and a second threaded post 1001 is inserted into the second mounting hole 1003. The lower end of the second threaded post 1001 is fixed to the top of the moving column 1204, and a second nut 1002 is threadedly connected to the side wall of the second threaded post 1001. A second rubber sleeve 1004 is sleeved on the side wall of the second threaded post 1001. The second rubber sleeve 1004 is sleeved on the side wall of the second threaded post 1001. Then, the second threaded post 1001 is inserted into the second mounting hole 1003 and the second nut 1002 is tightened and fixed.

[0037] Working principle: When in use, when in use, first sleeve the first rubber sleeve 904 on the side wall of the first threaded post 902. Then, insert the first threaded post 902 into the first mounting hole 901 and tighten and fix it with the first nut 903. Then, sleeve the second rubber sleeve 1004 on the side wall of the second threaded post 1001. Then, insert the second threaded post 1001 into the second mounting hole 1003 and tighten and fix the second nut 1002, so as to realize the installation and fixation of the filter body 1 and the base 11.

[0038] During the use process, when the filter body 1 vibrates in the vertical direction, the moving column 1204 can reciprocate in the vertical direction. At this time, the first spring 1206 deforms, and at the same time, it can squeeze the hydraulic oil in the annular cover 1203, and can push the first push rod 202 upward, thereby pushing the sliding plate 1209 upward. At the same time, the second spring 1211 is compressed. At this time, the damping liquid can pass through the through hole 1210, so as to achieve a good damping and buffering effect.

[0039] When the filter body 1 vibrates in the horizontal direction, the moving column 1204 can move in the horizontal direction. At the same time, the rubber ring 1205 deforms, and the first moving rod 302 can drive the spherical ball 304 to move. The rubber disc 301 deforms, so that the spherical ball 304 can slide along the side wall of the conical cover 303, and can push the second moving rod 310 downward. At the same time, the third spring 602 is compressed. When the second moving rod 310 moves downward, it can push the rotating plate 305 to rotate along the rotating shaft 702, and make the rotating plate 305 abut against the bottom of the L-shaped frame 306, thereby pushing the moving block 308 and the second pushing rod 309 upward. The fourth spring 803 is compressed. When the second pushing rod 309 moves upward, it can also push the sliding plate 1209 upward. At the same time, the second spring 1211 is compressed. At this time, the damping liquid can pass through the through hole 1210, which can achieve a good damping and buffering effect. And the sliding plate 1209 can move downward and reset under the action of the second spring 1211, so as to achieve a good shock absorption effect on the filter body 1, ensuring its filtering effect and service life.

[0040] Moreover, during shock absorption, when the sliding plate 1209 moves up and down reciprocally, it can drive the guide plate 1208 to move synchronously. At the same time, through the third reset mechanism 5, the second friction block 402 slides along the first friction block 401, which can achieve the effect of friction deceleration, thereby consuming the energy generated by the vibration and making the shock absorption effect better. And under the action of the fifth spring 502, it can ensure that the second friction block 402 always abuts against the first friction block 401, ensuring the effect of friction deceleration.

[0041] The standard parts used in the present invention can all be purchased from the market. The special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part all adopt conventional means such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts, and equipment all adopt conventional models in the prior art. In addition, the circuit connection adopts the conventional connection method in the prior art, which will not be elaborated here. The content not described in detail in this specification belongs to the prior art well-known to those skilled in the art.

[0042] The above describes the present invention and its implementation manners. This description is not restrictive. What is shown in the drawings is only one of the implementation manners of the present invention, and the actual structure is not limited thereto. Generally speaking, if those of ordinary skill in the art are inspired by it and design similar structural manners and embodiments without creative work without departing from the purpose of the present invention, they shall fall within the protection scope of the present invention.

Claims

1. A low-voltage harmonic filter module, comprising a filter body (1) and a base (11), characterized in that: A plurality of shock absorbing mechanisms (12) are arranged between the filter body (1) and the base (11), and each shock absorbing mechanism (12) comprises an L-shaped plate (1201), a first mounting mechanism (9) is arranged between the bottom of each L-shaped plate (1201) and the base (11), and a connecting plate (1202) is fixedly connected to the side wall of each L-shaped plate (1201), an annular cover (1203) is fixedly connected to the side wall of the connecting plate (1202), a moving column (1204) is inserted into the annular cover (1203), a rubber ring (1205) is fixedly connected between the moving column (1204) and the annular cover (1203), a first spring (1206) is fixedly connected between the moving column (1204) and the bottom of the annular cover (1203), a second mounting mechanism (10) is arranged between the moving column (1204) and the filter body (1), and the L-shaped plate (1201) is fixedly connected to the side wall of the connecting plate (1202). A fixed box (1207) is fixedly connected to the side wall, the annular cover (1203) is filled with hydraulic oil, the fixed box (1207) is filled with damping fluid, and a sliding plate (1209) is slidably connected to the fixed box (1207), a plurality of through holes (1210) arranged in an array are provided on the top of the sliding plate (1209), and a guide plate (1208) is fixedly connected to the top of the sliding plate (1209), the top of the guide plate (1208) passes through the top of the fixed box (1207), and a friction mechanism (4) is arranged between the guide plate (1208) and the L-shaped plate (1201), the side wall of the guide plate (1208) is sleeved with a second spring (1211), and the movement of the sliding plate (1209) is driven by a first driving mechanism (2) and a second driving mechanism (3), and the first driving mechanism (2) is fixedly inserted in the side wall of the annular cover (1203).

2. A low voltage harmonic filter module according to claim 1, characterized in that: The first pushing mechanism (2) comprises an L-shaped tube (201) fixedly inserted in the side wall of the annular cover (1203), and the upper end of the L-shaped tube (201) is fixedly inserted in the bottom of the fixed box (1207), and a first pushing rod (202) is inserted in the L-shaped tube (201), and the upper end of the first pushing rod (202) is against the bottom of the sliding plate (1209).

3. A low voltage harmonic filter module according to claim 1, characterized in that: The second pushing mechanism (3) comprises a rubber disk (301) embedded in the bottom of the annular cover (1203), and a first moving rod (302) is inserted into the bottom of the rubber disk (301), the moving column (1204) is sleeved on the side wall of the first moving rod (302), and a round ball (304) is fixedly connected to the lower end of the first moving rod (302), the bottom of the L-shaped plate (1201) is connected to the second moving rod (310) via a first reset mechanism (6), the upper end of the second moving rod (310) is fixedly connected to the conical cover (303), and the round ball (304) is inserted in the conical cover (303), and the L-shaped plate (120 1) is rotatably connected to a rotating plate (305) at the bottom through a rotating mechanism (7), and a strip-shaped opening (307) is provided on the side wall of the L-shaped plate (1201), the rotating plate (305) is inserted into the strip-shaped opening (307), and the bottom of the fixed box (1207) is connected to a moving block (308) through a second reset mechanism (8), the top of the moving block (308) is fixedly connected to a second push rod (309), the upper end of the second push rod (309) passes through the bottom of the fixed box (1207) and is fixed to the bottom of the sliding plate (1209), and the bottom of the moving block (308) is fixedly connected to an L-shaped frame (306).

4. The low voltage harmonic filter module according to claim 1, characterized in that: The friction mechanism (4) comprises a first friction block (401) fixedly connected to the side wall of the L-shaped plate (1201), and the side wall of the guide plate (1208) is connected to a second friction block (402) via a third reset mechanism (5).

5. The low voltage harmonic filter module according to claim 3, characterized in that: The first reset mechanism (6) comprises an L-shaped block (601) sleeved on the side wall of the second moving rod (310), the L-shaped block (601) is fixed to the top of the L-shaped plate (1201), and a third spring (602) is sleeved on the side wall of the second moving rod (310).

6. A low voltage harmonic filter module according to claim 3, characterized in that: The rotating mechanism (7) comprises two symmetrically arranged fixed blocks (701) fixedly connected to the bottom of the L-shaped plate (1201), and the rotating plate (305) is rotatably connected to the side walls of the fixed blocks (701) via a rotating shaft (702).

7. A low voltage harmonic filter module according to claim 3, characterized in that: The second reset mechanism (8) comprises two symmetrically arranged first T-shaped guide rods (801) fixedly connected to the bottom of the fixed box (1207), and the side walls of the first T-shaped guide rods (801) are sleeved with sliders (802), the sliders (802) are fixed to the side walls of the moving block (308), and the side walls of the first T-shaped guide rods (801) are sleeved with fourth springs (803).

8. A low voltage harmonic filter module according to claim 4, characterized in that: The third reset mechanism (5) comprises two symmetrically arranged second T-shaped guide rods (501) inserted into the side wall of the guide plate (1208), one end of the second T-shaped guide rod (501) being fixed to the side wall of the second friction block (402), and a fifth spring (502) being sleeved on the side wall of each second T-shaped guide rod (501).

9. The low voltage harmonic filter module according to claim 1, characterized in that: The first mounting mechanism (9) comprises a plurality of first mounting holes (901) formed at the bottom of the base (11), and a first threaded column (902) is inserted into the first mounting hole (901), the upper end of the first threaded column (902) is fixed to the bottom of the L-shaped plate (1201), and the side wall of the first threaded column (902) is threadedly connected to a first nut (903), and the side wall of the first threaded column (902) is sleeved with a first rubber sleeve (904).

10. The low voltage harmonic filter module according to claim 1, characterized in that: The second mounting mechanism (10) comprises a plurality of second mounting holes (1003) formed at the bottom of the filter body (1), and a second threaded column (1001) is inserted into the second mounting hole (1003), the lower end of the second threaded column (1001) is fixed to the top of the movable column (1204), the side wall of the second threaded column (1001) is threadedly connected to a second nut (1002), and the side wall of the second threaded column (1001) is sleeved with a second rubber sleeve (1004).

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