A low voltage harmonic filter module

Abstract

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

Description

Technical Field

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

[0002] ‌The low-voltage harmonic filter module is a device used to filter out harmonics in low-voltage power systems. The low-voltage harmonic filter module is mainly used to filter out harmonic currents generated by nonlinear loads (such as frequency conversion equipment, rectifiers, etc.) in low-voltage power systems to improve the quality of power and protect the stable operation of power equipment and systems. The low-voltage harmonic filter module is usually composed of a filter body, a base, a heat-conducting plate, a heat-conducting strip and other components. Among them, the filter body is the core component responsible for filtering out harmonics, the base is used to fix the filter body, and the heat-conducting plate and the heat-conducting strip are used for heat dissipation to ensure that the filter can still work normally in a high-temperature environment. The low-voltage harmonic filter module detects the harmonic current in the power system and generates a compensation current that is equal to the harmonic current in magnitude and opposite in direction, thereby offsetting the harmonic current and achieving the purpose of filtering out 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 filter module is in use, the filter is usually fixed to the base by bolts, and the shock absorption effect is very poor, so that the filter is easily damaged by vibration, which affects its filtering effect and service life. Summary of the invention

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

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a low-voltage harmonic filter module, comprising a filter body and a base, a plurality of shock absorbing mechanisms are arranged between the filter body and the base, and each shock absorbing mechanism comprises an L-shaped plate, a first mounting 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, an annular cover is fixedly connected to the side wall of the connecting plate, and a moving column is inserted in the annular cover, a rubber ring is fixedly connected between the moving column and the annular cover, and a first spring is fixedly connected between the moving column and the bottom of the annular cover, and the A second mounting mechanism is provided 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 annular cover is filled with hydraulic oil, the fixed box is filled with damping fluid, and a sliding plate is slidably connected to the fixed box, a plurality of through holes arranged in an array are provided 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 passes through the top of the fixed box, and a friction mechanism is provided 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 driven by the first pushing mechanism and the second pushing mechanism.

[0006] Preferably, the first pushing mechanism comprises an L-shaped tube fixedly inserted in the side wall of the annular cover, and the upper end of the L-shaped tube is fixedly inserted in the bottom of the fixed box, a first pushing rod is inserted in the L-shaped tube, and the upper end of the first pushing rod is 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 the lower end of the first moving rod is fixedly connected to a ball, the bottom of the L-shaped plate is connected to the 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 ball is inserted in the conical cover, the bottom of the L-shaped plate is rotatably connected to a rotating plate through a rotating mechanism, and a strip opening is opened on the side wall of the L-shaped plate, the rotating plate is inserted in the strip 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 the second pushing rod, the upper end of the second pushing rod passes 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 comprises a first friction block fixedly connected to the side wall of the L-shaped plate, and the side wall of the guide plate is connected to a second friction block via a third reset mechanism.

[0009] Preferably, the first reset mechanism comprises 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 the side wall of the second moving rod is sleeved with a third spring.

[0010] Preferably, the rotating mechanism comprises two symmetrically arranged fixing blocks fixedly connected to the bottom of the L-shaped plate, and the rotating plate is rotatably connected to the side walls of the fixing blocks via 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, and the side walls of the first T-shaped guide rods are sleeved with sliders, the sliders are fixed to the side walls of the moving block, and the side walls of each first T-shaped guide rod are sleeved with a fourth spring.

[0012] Preferably, the third reset mechanism comprises 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 the side wall of each second T-shaped guide rod is sleeved with a fifth spring.

[0013] Preferably, the first mounting mechanism includes a plurality of first mounting holes opened at 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 the side wall of the first threaded column is threadedly connected with a first nut, and the side wall of the first threaded column is sleeved with a first rubber sleeve.

[0014] Preferably, the second mounting mechanism includes a plurality of second mounting holes opened at the bottom of the filter body, and a second threaded column is inserted into the second mounting hole, the lower end of the second threaded column is fixed to the top of the movable column, and the side wall of the second threaded column is threadedly connected with a second nut, and the side wall of the second threaded column is sleeved with a second rubber sleeve.

[0015] Compared with the prior art, the present invention has the following beneficial effects: The low-voltage harmonic filter module is provided with a shock absorbing mechanism, etc., and when in use, the first rubber sleeve is firstly sleeved on the side wall of the first threaded column, then the first threaded column is inserted into the first mounting hole and is tightened and fixed by the first nut, then the second rubber sleeve is sleeved on the side wall of the second threaded column, then the second threaded column is inserted into the second mounting hole and the second nut is tightened and fixed, so as to realize the installation and fixation of the filter body and the base. During use, when the filter body vibrates in the vertical direction, the movable column can reciprocate in the vertical direction. At this time, the first spring is deformed, and at the same time, the hydraulic oil in the annular cover can be squeezed, and the first push rod can be pushed to move upward, thereby pushing the sliding plate to move upward. At the same time, the second spring is compressed, and at this time, the damping fluid can pass through the through hole, thereby achieving a good damping and buffering effect. When the filter body vibrates in the horizontal direction, the movable column can move in the horizontal direction, and at the same time, the rubber ring is deformed, and the ball can be driven to move by the first moving rod, and the rubber disc is deformed, so that the ball can move along the conical cover. The side wall slides, which can push the second moving rod to move 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 to move upward. The fourth spring is compressed. When the second push rod moves upward, it can also push the sliding plate to move upward. At the same time, the second spring is compressed. At this time, the damping fluid can pass through the through hole, which can play a good damping and buffering effect. In addition, the sliding plate can move downward and reset under the action of the second spring, thereby playing a good shock-absorbing effect on the filter body, ensuring its filtering effect and service life; by setting a deceleration mechanism, when the sliding plate moves up and down reciprocatingly, it can drive the guide plate to move synchronously. At the same time, the second friction block is driven to slide along the first friction block through the third reset mechanism, which can play a friction deceleration effect, thereby consuming the energy generated by the vibration, so that the shock-absorbing effect is better, and under the action of the fifth spring, it can ensure that the second friction block and the first friction block are always against each other, ensuring the effect of friction deceleration. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the overall structure of the present invention from another perspective; Figure 3 It is a schematic diagram of the position of the buffer mechanism in the present invention; Figure 4 for Figure 1 A schematic diagram of the enlarged structure at A in the middle; Figure 5 for Figure 2 A schematic diagram of the enlarged structure at B in the middle; Figure 6 for Figure 3 Schematic diagram of the enlarged structure at C in the middle; Figure 7 for Figure 6 Schematic diagram of the enlarged structure at D in the middle; Figure 8 for Figure 6 Schematic diagram of the enlarged structure at E in the middle.

[0017] In the figure: 1, filter body; 2, first push mechanism; 201, L-shaped tube; 202, first push rod; 3, second push mechanism; 301, rubber disc; 302, first moving rod; 303, cone cover; 304, ball; 305, rotating plate; 306, L-shaped frame; 307, strip opening; 308, moving block; 309, second push 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 Structure; 801, first T-shaped guide rod; 802, slider; 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 absorbing 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 DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] See also Figure 1-Figure 8 The present invention provides a technical solution: a low-voltage harmonic filter module, comprising a filter body 1 and a base 11, 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, and 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, and 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 side wall of the L-shaped plate 1201 A fixed box 1207 is fixedly connected, the annular cover 1203 is filled with hydraulic oil, the fixed box 1207 is filled with damping liquid, and a sliding plate 1209 is slidably connected in the fixed box 1207, a plurality of through holes 1210 arranged in an array are opened 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 penetrates 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 pushed by the first pushing mechanism 2 and the second pushing mechanism 3, which can have a good shock-absorbing effect on the filter body 1, ensure its filtering effect and service life, and at the same time, can consume the energy generated by the vibration, so that the shock-absorbing effect is better.

[0020] See also Figure 5 and Figure 6The first pushing mechanism 2 includes 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. 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. When the filter body 1 vibrates in the vertical direction, the movable column 1204 can move back and forth in the vertical direction. At this time, the first spring 1206 is deformed and can squeeze the hydraulic oil in the annular cover 1203, and can push the first pushing rod 202 to move upward, thereby pushing the sliding plate 1209 to move upward. At the same time, the second spring 1211 is compressed. At this time, the damping fluid can pass through the through hole 1210, thereby having a good damping and buffering effect.

[0021] See also Figure 6-Figure 8The second pushing mechanism 3 includes a rubber disk 301 embedded in 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 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 through the first reset mechanism 6, the upper end of the second moving rod 310 is fixedly connected to the conical cover 303, and the ball 304 is inserted in the conical cover 303, and the bottom of the L-shaped plate 1201 The rotating plate 305 is rotatably connected through the rotating mechanism 7, and the side wall of the L-shaped plate 1201 is provided with a strip opening 307, the rotating plate 305 is inserted into the strip opening 307, and the bottom of the fixed box 1207 is connected with a moving block 308 through the second reset mechanism 8, the top of the moving block 308 is fixedly connected with 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 with the L-shaped frame 306. When the 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 is deformed, and the ball 304 can be driven to move by the first moving rod 302. The rubber plate 301 is deformed, so that the ball 304 can slide along the side wall of the cone cover 303, and the second moving rod 310 can be pushed to move downward. When the second moving rod 310 moves downward, it can push the rotating plate 305 to rotate along the rotating shaft 702, and the rotating plate 305 and the L-shaped frame 303 are connected. 06 is abutted against each other, thereby pushing the moving block 308 and the second pushing rod 309 to move upward. When the second pushing rod 309 moves upward, it can also push the sliding plate 1209 to move upward. At the same time, the second spring 1211 is compressed. At this time, the damping fluid can pass through the through hole 1210, which can have a good damping and buffering effect. Moreover, the sliding plate 1209 can move downward and reset under the action of the second spring 1211, thereby having a good shock-absorbing effect on the filter body 1, thereby ensuring its filtering effect and service life.

[0022] See also 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 the side wall of the guide plate 1208 is connected to the second friction block 402 through the third reset mechanism 5. When shock absorbing, when the sliding plate 1209 moves up and down, it can drive the guide plate 1208 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, so that the shock absorbing effect is better.

[0023] See also Figure 7The 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, and the side wall of the second moving rod 310 is sleeved with a third spring 602, which guides and resets the movement of the second moving rod 310.

[0024] See also Figure 7 The rotating mechanism 7 includes 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 wall of the fixed block 701 through a rotating shaft 702 to ensure the normal rotation of the rotating plate 305.

[0025] See also 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, 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 each first T-shaped guide rod 801 are sleeved with fourth springs 803, which play a guiding and resetting role for the movement of the moving block 308.

[0026] See also 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, and the side wall of each second T-shaped guide rod 501 is sleeved with a fifth spring 502, which guides and resets the movement of the second friction block 402.

[0027] See also Figure 6 The first mounting mechanism 9 includes a plurality of first mounting holes 901 provided 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 with a first nut 903, and the side wall of the first threaded column 902 is sleeved with a first rubber sleeve 904. The first rubber sleeve 904 is first sleeved on the side wall of the first threaded column 902, and then the first threaded column 902 is inserted into the first mounting hole 901 and is tightened and fixed by the first nut 903.

[0028] See also Figure 6The second mounting mechanism 10 includes a plurality of second mounting holes 1003 opened 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, and the side wall of the second threaded column 1001 is threadedly connected with a second nut 1002, and the side wall of the second threaded column 1001 is sleeved with a second rubber sleeve 1004, and the second rubber sleeve 1004 is sleeved on the side wall of the second threaded column 1001, and then, the second threaded column 1001 is inserted into the second mounting hole 1003 and the second nut 1002 is tightened and fixed.

[0029] Working principle: When in use, first put the first rubber sleeve 904 on the side wall of the first threaded column 902, then insert the first threaded column 902 into the first mounting hole 901 and tighten it with the first nut 903, then put the second rubber sleeve 1004 on the side wall of the second threaded column 1001, then insert the second threaded column 1001 into the second mounting hole 1003 and tighten it with the second nut 1002, thereby realizing the installation and fixation of the filter body 1 and the base 11.

[0030] During use, when the filter body 1 vibrates in the vertical direction, the movable column 1204 can move back and forth in the vertical direction. At this time, the first spring 1206 is deformed and at the same time, it can squeeze the hydraulic oil in the annular cover 1203 and push the first push rod 202 to move upward, thereby pushing the sliding plate 1209 to move upward. At the same time, the second spring 1211 is compressed. At this time, the damping fluid can pass through the through hole 1210, thereby achieving a good damping and buffering effect.

[0031] 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 is deformed, and the ball 304 can be driven to move by the first moving rod 302. The rubber disk 301 is deformed, so that the 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. At the same time, the third spring 602 is compressed. 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 and the rotating plate 305 can be moved together. The bottoms of the L-shaped frame 306 are abutted against each other, thereby pushing the moving block 308 and the second push rod 309 to move upward, and the fourth spring 803 is compressed. When the second push rod 309 moves upward, it can also push the sliding plate 1209 to move upward. At the same time, the second spring 1211 is compressed. At this time, the damping fluid can pass through the through hole 1210, which can have a good damping and buffering effect. Moreover, the sliding plate 1209 can move downward and reset under the action of the second spring 1211, thereby having a good shock-absorbing effect on the filter body 1, thereby ensuring its filtering effect and service life.

[0032] Moreover, when performing shock absorption, when the sliding plate 1209 moves up and down, it can drive the guide plate 1208 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 play a role of friction deceleration, thereby consuming the energy generated by the vibration, making the shock absorption effect better. Moreover, under the action of the fifth spring 502, it can ensure that the second friction block 402 and the first friction block 401 are always against each other, ensuring the effect of friction deceleration.

[0033] The standard parts used in the present invention can all be purchased from the market, and special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the prior art. Machinery, parts and equipment all adopt conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here. The content not described in detail in this specification belongs to the prior art known to professional and technical personnel in this field.

[0034] The present invention and its embodiments are described above, and such description is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if ordinary technicians in the field are inspired by it, without departing from the purpose of the invention, they can design a structure and embodiment similar to the technical solution without creativity, which should belong to 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), and a second mounting mechanism (1204) is arranged between the moving column (1204) and the filter body (1). 10), and the side wall of the L-shaped plate (1201) is fixedly connected to a fixed box (1207), 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), the top of the sliding plate (1209) is provided with a plurality of through holes (1210) arranged in an array, and the top of the sliding plate (1209) is fixedly connected to a guide plate (1208), the top of the guide plate (1208) is arranged to penetrate 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).

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. A 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. The low voltage harmonic filter module according to claim 1, 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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