Power signal detection device with good heat dissipation effect

Abstract

The invention discloses an electric signal detection device with good heat dissipation effect, which relates to the technical field of electric equipment and comprises a box body. During the operation of the electric signal box, a staff turns on a forward and reverse motor, which drives a rotating rod to rotate, and the rotating rod is connected to gear one, so that gear one rotates. Gear one is meshed and connected with a rotating cooling mechanism. Because of the setting of the gear ring, the rotating cooling mechanism starts to rotate. A connecting plate is connected to the rotating rod and is also connected to a sliding rod, so that the rotating cooling mechanism can start to move around a track of an annular groove. When the fan blades in the rotating cooling mechanism generate gas, an extrusion plate in the rotating cooling mechanism starts to move around the track of the annular groove. The extrusion plate will continuously squeeze the cold air bag, so that the cold air in the cold air bag is ejected from an air outlet pipe, and the fan blades blow the cold air upward, thereby achieving a heat dissipation effect on the electric signal box.

Description

Technical Field

[0001] The present invention relates to the technical field of electric power equipment, and in particular to an electric power signal detection device with good heat dissipation effect. Background Art

[0002] Power testing is specifically used to test the insulation performance of equipment and the operating status of equipment. It includes many items: absorption ratio and polarization index test, dielectric loss and capacitance test, DC leakage current test, transformation ratio, polarity test, no-load loss and load loss test, DC resistance test, transition resistance and transition time of tap changer and waveform test, AC withstand voltage test, winding deformation test, transformer oil test, partial discharge test. Due to the large number of test items and the different instruments required for detection, it has caused great trouble to power detection and requires a large amount of detection manpower, materials and financial resources.

[0003] The problem with existing power detection devices is that they cannot dissipate heat for electronic components well during use, which will affect the service life of the electronic components. In addition, the stability of the connection between the detection device and the power device is poor, which will affect the efficiency of power detection. For this reason, we propose an power detection device with good heat dissipation effect to improve the actual technical points for the heat dissipation of the power detection equipment. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides an electric power signal detection device with good heat dissipation effect, comprising a box body, a screen is fixedly connected to the central axis of the top of the box body, a placement groove is opened inside the box body, a circular groove is opened at the bottom of the placement groove, an annular groove is opened on the outer side of the bottom of the circular groove, a fixing groove is opened at the center of the bottom of the circular groove, and the annular groove is arranged in the shape of an annular cylinder, and is characterized in that it also includes: a heat dissipation mechanism, the heat dissipation mechanism includes a forward and reverse motor fixedly connected to the bottom of the fixing groove, an auxiliary self-rotating mechanism is rotatably connected to the output end of the forward and reverse motor, a rotating cooling mechanism is slidably connected to the bottom of the annular groove, the auxiliary self-rotating mechanism is rotatably connected to the rotating cooling mechanism, and a dustproof mechanism, the dustproof mechanism includes two groups of electric telescopic rods fixedly connected to the bottom of the placement groove, the two groups of electric telescopic rods are respectively arranged on the left and right sides of the placement groove, and a rotating mechanism is fixedly connected to the central axis of the top of each group of electric telescopic rods.

[0005] Furthermore, the auxiliary self-rotation mechanism includes a rotating rod fixedly connected to the top central axis of the forward and reverse motors, the upper end of the outer wall of the rotating rod is fixedly connected to a gear 1, the outer wall of the bottom of the circular groove is fixedly connected to a gear ring, and the lower end of the outer wall of the rotating rod is fixedly connected to a connecting plate.

[0006] Furthermore, the rotating cold air mechanism includes a sliding rod slidably connected to the left end of the bottom of the annular groove, the upper end of the outer wall of the sliding rod is rotatably connected to gear 2, the top of the sliding rod is fixedly connected to a connecting rod, the lower end of the outer wall of the connecting rod is fixedly connected to a fan blade, the upper end of the outer wall of the connecting rod is fixedly connected to an extrusion plate, the left end of the extrusion plate is slidably connected to a cold air bag, the bottom of the cold air bag is fixedly connected to the center of the bottom of the placement groove, the inner wall of the cold air bag is fixedly connected to a plurality of air outlet pipes, the right end of the outer wall of gear 2 is slidably connected to the left end of the outer wall of gear 1, and the left end of the connecting plate is fixedly connected to the middle end of the outer wall of the sliding rod.

[0007] Furthermore, the rotating mechanism comprises a fixed block fixedly connected to the central axis at the top of the electric telescopic rod, the inner wall of the fixed block is rotatably connected to the rotating rod, and the outer wall of the middle end of the rotating rod is fixedly connected to the dust shield.

[0008] Furthermore, a rope is fixedly connected to the lower middle axis of the right end of the dust shield, and one end of the rope away from the dust shield is fixedly connected to the top right side of the rotating rod.

[0009] Furthermore, a dust removal mechanism is fixedly connected to the upper outer ends of the two electric telescopic rods, and the dust removal mechanism includes a ventilation block fixedly connected to the upper outer ends of the electric telescopic rods, an air groove is provided at the top center axis of the ventilation block, and a plurality of ventilation holes are provided on the right wall of the ventilation block, and an electric power signal box is fixedly connected to the outer side of the bottom end of the electric telescopic rod.

[0010] Furthermore, a limiting mechanism is fixedly connected at the center axis of the outer walls of the two ventilation blocks, the limiting mechanism is fixedly connected to the elastic rope at the center axis of the right wall of the ventilation block, a limiting block is fixedly connected at the center axis of the upper end of the right wall of the placement groove, and the inner wall of the limiting block is slidably connected to the middle end of the outer wall of the elastic rope.

[0011] Furthermore, one end of the elastic rope away from the ventilation block is fixedly connected to a cleaning mechanism, and the cleaning mechanism includes a brush plate fixedly connected to one end of the elastic rope, movable grooves are respectively provided on the left and right sides of the top of the placement groove, and a falling prevention groove is provided at the middle end of the left side of the movable groove, and the top of the brush plate is slidably connected to the upper side of the top of the movable groove, and small square columns are provided on the left and right sides of the brush plate, and a number of brushes are provided on the top of the brush plate, and springs are respectively fixedly connected to the central axis at the upper and lower ends of the movable groove.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] (1) The electric signal detection device with good heat dissipation effect, during the operation of the electric signal box, the staff turns on the forward and reverse motors, the forward and reverse motors drive the rotating rod to rotate, the rotating rod is connected to gear one, so that gear one rotates, gear one is meshed and connected with the rotating air conditioning mechanism, and because of the setting of the gear ring, the rotating air conditioning mechanism starts to rotate, the connecting plate is connected to the rotating rod, and is also connected to the sliding rod, so that the rotating air conditioning mechanism can start to move around the track of the annular groove, when the fan blades in the rotating air conditioning mechanism generate gas, the extrusion plate in the rotating air conditioning mechanism starts to move around the track of the annular groove, the extrusion plate will continuously squeeze the cold air bag, so that the cold air in the cold air bag is ejected from the air outlet pipe, and the fan blades blow the cold air upward, thereby achieving a heat dissipation effect on the electric signal box.

[0014] (2) The electric signal detection device with good heat dissipation effect is that when the electric signal box stops running, the staff opens the electric telescopic rod. The rotating mechanism arranged on the top of the electric telescopic rod can make the dust shield therein rotate freely. Due to the setting of the rope, the rope can produce a tightening and loosening effect under the forward and reverse rotation of the forward and reverse motor. The rope is connected to the dust shield, so the dust shield can be rotated in a limited manner. When the electric telescopic rod rises to an appropriate position, the dust shield will also fall down, thereby achieving a dust-proof effect on the electric signal box.

[0015] (3) The electric signal detection device with good heat dissipation effect, during the operation of the electric signal box, the dust removal mechanism is connected to the limiting mechanism, which can make the elastic rope in the limiting mechanism tighten and loosen. Because of the setting of the limiting block, the elastic rope will not hinder the operation of other components. The elastic rope is connected to the cleaning mechanism. The stretching of the elastic rope makes the cleaning mechanism move left and right, so that the brush cleans the screen. Because of the setting of the anti-drop groove, the brush plate will not fall. The setting of the spring can make the brush plate generate another force to rebound, thereby enhancing the cleaning effect of dust accumulation. The electric telescopic rod moves up, and the connected dust removal mechanism also moves up. Because of the setting of the wind groove, the wind generated during the rising process can be discharged from the ventilation hole, thereby playing a role in cleaning and dissipating dust on the side wall of the electric signal box. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0017] Figure 2 It is a front perspective cross-sectional view of the overall structure of the present invention;

[0018] Figure 3 It is a top view of a three-dimensional cross-sectional view of a part of the structure of the present invention;

[0019] Figure 4 It is a schematic diagram of the internal structure of the overall structure of the present invention;

[0020] Figure 5 It is a side perspective cross-sectional view of the overall structure of the present invention;

[0021] Figure 6 It is a three-dimensional cross-sectional view of the back of the overall structure of the present invention;

[0022] Figure 7 It is a bottom-up three-dimensional cross-sectional view of a part of the structure of the present invention;

[0023] Figure 8 For the present invention Figure 6 A magnified view of middle;

[0024] Fig. 9 For the present invention Figure 4 Enlarged view of B.

[0025] In the figure: 1, box; 2, sieve; 16, placement slot; 17, round slot; 18, fixed slot; 3001, heat dissipation mechanism; 43, forward and reverse motor; 301, auxiliary self-rotation mechanism; 302, rotary air conditioning mechanism; 6001, dust prevention mechanism; 23, electric telescopic rod; 603, rotating mechanism; 41, rotating rod; 42, gear 1; 47, gear ring; 44, connecting plate; 45, sliding rod; 73, connecting rod; 71, fan blade; 31, extrusion plate; 74 , cold air bag; 75, exhaust pipe; 46, gear two; 48, fixed block; 25, rotating rod; 26, dust shield; 72, rope; 605, dust removal mechanism; 11, ventilation block; 13, wind slot; 24, ventilation hole; 15, power signal box; 602, limiting mechanism; 12, elastic rope; 22, limiting block; 51, brush plate; 601, cleaning mechanism; 52, moving slot; 53, anti-drop slot; 21, brush; 54, spring; 14, circular groove. DETAILED DESCRIPTION

[0026] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

[0027] Example 1

[0028] See also Figure 1-Figure 5As shown, the present invention is a power signal detection device with good heat dissipation effect, including a box body 1, a screen 2 is fixedly connected to the top center axis of the box body 1, and the purpose of this arrangement is to allow dust and gas to go out of the screen 2. A placement groove 16 is opened inside the box body 1, and a circular groove 17 is opened at the bottom of the placement groove 16. An annular groove 14 is opened on the outer side of the bottom of the circular groove 17, and the purpose of this arrangement is to enable the rotating cold air mechanism 302 to move around it. A fixed groove 18 is opened at the center of the bottom of the circular groove 17, and the purpose of this arrangement is to place the forward and reverse motors 43. The annular groove 14 is set in the shape of an annular cylinder, and also includes:

[0029] The heat dissipation mechanism 3001 includes a forward and reverse motor 43 fixedly connected to the bottom of the fixed groove 18. The purpose of this arrangement is to provide power to the auxiliary self-rotation mechanism 301. The output end of the forward and reverse motor 43 is rotatably connected to the auxiliary self-rotation mechanism 301. The purpose of this arrangement is to enable the rotary cooling mechanism 302 to start self-rotation. The bottom of the annular groove 14 is slidably connected to the rotary cooling mechanism 302. The auxiliary self-rotation mechanism 301 is rotatably connected to the rotary cooling mechanism 302.

[0030] The dust-proof mechanism 6001 includes two groups of electric telescopic rods 23 fixedly connected to the bottom of the placement slot 16. The purpose of this arrangement is to provide power to the dust removal mechanism 605. The two groups of electric telescopic rods 23 are respectively arranged on the left and right sides of the placement slot 16. A rotating mechanism 603 is fixedly connected to the central axis at the top of each group of electric telescopic rods 23. The purpose of this arrangement is to place the fallen dust.

[0031] Embodiment 2,

[0032] The distinguishing features from Example 1 are:

[0033] like Figure 1-Figure 9 As shown,

[0034] The auxiliary self-rotating mechanism 301 includes a rotating rod 41 fixedly connected to the top central axis of the forward and reverse motor 43, and the upper end of the outer wall of the rotating rod 41 is fixedly connected to a gear 1 42, so that it can mesh with gear 2 46, and the outer wall of the bottom of the circular groove 17 is fixedly connected to a gear ring 47, so that it can clamp and mesh with gear 2 46, and the lower end of the outer wall of the rotating rod 41 is fixedly connected to a connecting plate 44, so that the rotating cooling mechanism 302 can move around the trajectory of the circular groove 14.

[0035] The rotary cooling mechanism 302 includes a sliding rod 45 slidably connected to the left end of the bottom of the annular groove 14. The purpose of this arrangement is to limit the moving trajectory. The upper end of the outer wall of the sliding rod 45 is rotatably connected to the second gear 46. The top of the sliding rod 45 is fixedly connected to a connecting rod 73. The lower end of the outer wall of the connecting rod 73 is fixedly connected to a fan blade 71. The purpose of this arrangement is that the rotation of the second gear 46 can cause the fan blade 71 to rotate to generate wind.

[0036] The upper end of the outer wall of the connecting rod 73 is fixedly connected with an extrusion plate 31, and the purpose of this arrangement is to extrude the cold air bag 74. The left end of the extrusion plate 31 is slidably connected with the cold air bag 74. The bottom of the cold air bag 74 is fixedly connected to the center of the bottom of the placement groove 16. The inner wall of the cold air bag 74 is fixedly connected with a plurality of air outlet pipes 75. The purpose of this arrangement is to allow the gas in the cold air bag 74 to be ejected downward with a trajectory.

[0037] Among them, the right end of the outer wall of gear 2 46 is slidably connected to the left end of the outer wall of gear 1 42, and the left end of the connecting plate 44 is fixedly connected to the middle end of the outer wall of the sliding rod 45. The purpose of this arrangement is that the rotating rod 41 can drive the sliding rod 45 to move.

[0038] The rotating mechanism 603 includes a fixed block 48 fixedly connected to the central axis at the top of the electric telescopic rod 23. The inner wall of the fixed block 48 is rotatably connected to the rotating rod 25. The purpose of this arrangement is to provide a rotation position for the rotating rod 25. The outer wall of the middle end of the rotating rod 25 is fixedly connected to the dust shield plate 26. The purpose of this arrangement is that the rotating rod 25 drives the dust shield plate 26 to rotate.

[0039] A rope 72 is fixedly connected to the lower center axis of the right end of the dust shield 26. The purpose of this arrangement is to limit the rise and fall of the dust shield 26 to a certain extent. The end of the rope 72 away from the dust shield 26 is fixedly connected to the top right side of the rotating rod 41. The purpose of this arrangement is to provide power for tightening and loosening the rope.

[0040] The dust removal mechanism 605 is fixedly connected to the upper ends of the outer sides of the two electric telescopic rods 23. The dust removal mechanism 605 includes a ventilation block 11 fixedly connected to the upper ends of the outer sides of the electric telescopic rods 23. A wind slot 13 is provided at the middle axis of the top of the ventilation block 11. The purpose of this arrangement is to allow wind to enter the wind slot 13 during the rising process of the electric telescopic rod 23. A plurality of ventilation holes 24 are provided on the right wall of the ventilation block 11. The purpose of this arrangement is to allow the wind entering the wind slot 13 to be discharged from the ventilation holes 24.

[0041] The outer side of the bottom end of the electric telescopic rod 23 is fixedly connected with a power signal box 15 .

[0042] A limiting mechanism 602 is fixedly connected at the center axis of the outer walls of the two ventilation blocks 11. The limiting mechanism 602 is fixedly connected to the elastic rope 12 at the center axis of the right wall of the ventilation block 11. The purpose of this arrangement is that the rise and fall of the ventilation block 11 can drive the elastic rope 12 to be pulled closer and loosened. A limiting block 22 is fixedly connected at the center axis of the upper end of the right wall of the placement groove 16. The purpose of this arrangement is to prevent the elastic rope 12 from interfering with other components. The inner wall of the limiting block 22 is slidably connected to the middle end of the outer wall of the elastic rope 12.

[0043] One end of the elastic rope 12 away from the ventilation block 11 is fixedly connected to a cleaning mechanism 601, and the cleaning mechanism 601 includes a brush plate 51 fixedly connected to one end of the elastic rope 12, and movable grooves 52 are respectively provided on the left and right sides of the top of the placement groove 16, and a falling prevention groove 53 is provided at the middle end of the left side of the movable groove 52, and the purpose of this arrangement is to prevent the brush plate 51 from falling, and the top of the brush plate 51 is slidably connected to the upper side of the top of the movable groove 52, and small square columns are provided on the left and right sides of the brush plate 51. A plurality of brushes 21 are provided on the top of the brush plate 51, and the purpose of this arrangement is to clean the sieve 2, and springs 54 are respectively fixedly connected at the central axis at the upper and lower ends of the movable groove 52, and the purpose of this arrangement is to provide another layer of power to the brush plate 51.

[0044] A specific application of this embodiment is:

[0045] During the operation of the power signal box 15, the staff turns on the forward and reverse motors 43, and the forward and reverse motors 43 drive the rotating rod 41 to rotate. The rotating rod 41 is connected to the gear 1 42, so that the gear 1 42 rotates, and the gear 1 42 is meshed and connected with the rotating cooling mechanism 302. Because of the setting of the gear ring 47, the rotating cooling mechanism 302 starts to rotate. The connecting plate 44 is connected to the rotating rod 41 and is also connected to the sliding rod 45, so that the rotating cooling mechanism 302 can start to move around the track of the annular groove 14. When the fan blades 71 in the rotating cooling mechanism 302 generate gas, the extrusion plate 31 in the rotating cooling mechanism 302 starts to move around the track of the annular groove 14, and the extrusion plate 31 will continuously squeeze the cold air bag 74, so that the cold air in the cold air bag 74 is ejected from the outlet pipe 75, and the fan blades 71 blow the cold air upward, thereby achieving a heat dissipation effect on the power signal box 15.

[0046] When the power signal box 15 stops running, the staff opens the electric telescopic rod 23. The rotating mechanism 603 arranged on the top of the electric telescopic rod 23 can make the dust shield 26 therein rotate freely. Due to the setting of the rope 72, the rope 72 can produce a tightening and loosening effect under the forward and reverse rotation of the forward and reverse motor 43. The rope 72 is connected to the dust shield 26, so the dust shield 26 can be rotated in a limited manner. When the electric telescopic rod 23 rises to the appropriate position, the dust shield 26 will also fall down, thereby achieving a dust-proof effect on the power signal box 15.

[0047] During the operation of the power signal box 15, the dust removal mechanism 605 is connected to the limiting mechanism 602, so that the elastic rope 12 in the limiting mechanism 602 can be tightened and loosened. Because of the setting of the limiting block 22, the elastic rope 12 will not hinder the operation of other components. The elastic rope 12 is connected to the cleaning mechanism 601. The stretching of the elastic rope 12 causes the cleaning mechanism 601 to move left and right, so that the brush 21 cleans the sieve 2. Because of the setting of the anti-falling groove 53, the brush plate 51 will not fall. The setting of the spring 54 can make the brush plate 51 generate another force to rebound, thereby enhancing the cleaning effect of the accumulated dust. The electric telescopic rod 23 moves up, and the connected dust removal mechanism 605 also moves up. Because of the setting of the wind groove 13, the wind generated during the rising process can be discharged from the ventilation hole 24, thereby playing a role in cleaning and dissipating the dust on the side wall of the power signal box 15.

[0048] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field and related fields without creative work should fall within the scope of protection of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention are implemented according to the conventional means in the field unless otherwise specified and limited.

Claims

1. An electric power signal detection device with good heat dissipation effect, comprising a box (1), a screen (2) fixedly connected to the top center axis of the box (1), a placement groove (16) is provided inside the box (1), a circular groove (17) is provided at the bottom of the placement groove (16), an annular groove (14) is provided on the outer side of the bottom of the circular groove (17), a fixing groove (18) is provided at the center of the bottom of the circular groove (17), and the annular groove (14) is arranged in the shape of an annular cylinder, characterized in that: Also includes: A heat dissipation mechanism (3001), the heat dissipation mechanism (3001) comprising a forward and reverse motor (43) fixedly connected to the bottom of the fixed groove (18), the output end of the forward and reverse motor (43) being rotatably connected to an auxiliary self-rotation mechanism (301), the bottom of the annular groove (14) being slidably connected to a rotary cooling mechanism (302), the auxiliary self-rotation mechanism (301) being rotatably connected to the rotary cooling mechanism (302); and a dustproof mechanism (6001), the dustproof mechanism (6001) comprising two groups of electric telescopic rods (23) fixedly connected to the bottom of the placement groove (16), the two groups of electric telescopic rods (23) being respectively arranged on the left and right sides of the placement groove (16), each group of the electric telescopic rods (23) being connected to the bottom of the placement groove (16). A rotating mechanism (603) is fixedly connected to the middle axis of the top of the rod (23), the rotating mechanism (603) comprising a fixed block (48) fixedly connected to the middle axis of the top of the electric telescopic rod (23), the inner wall of the fixed block (48) being rotatably connected to a rotating rod (25), the middle end outer wall of the rotating rod (25) being fixedly connected to a dust shield (26); the auxiliary self-rotating mechanism (301) comprising a rotating rod (41) fixedly connected to the middle axis of the top of the forward and reverse motor (43), the upper end of the outer wall of the rotating rod (41) being fixedly connected to a gear 1 (42), the bottom outer wall of the circular groove (17) being fixedly connected to a gear ring (47), the lower end of the outer wall of the rotating rod (41) being fixedly connected to a connecting rod (26) The rotating cold air mechanism (302) comprises a sliding rod (45) slidably connected to the left end of the bottom of the annular groove (14); the upper end of the outer wall of the sliding rod (45) is rotatably connected to a gear 2 (46); the top of the sliding rod (45) is fixedly connected to a connecting rod (73); the lower end of the outer wall of the connecting rod (73) is fixedly connected to a fan blade (71); wherein the upper end of the outer wall of the connecting rod (73) is fixedly connected to an extrusion plate (31); the left end of the extrusion plate (31) is slidably connected to a cold air bag (74); the bottom of the cold air bag (74) is fixedly connected to the center of the bottom of the placement groove (16); the inner wall of the cold air bag (74) is fixedly connected to a plurality of an air outlet pipe (75); wherein the right end of the outer wall of the gear 2 (46) is slidably connected to the left end of the outer wall of the gear 1 (42), and the left end of the connecting plate (44) is fixedly connected to the middle end of the outer wall of the sliding rod (45); the outer upper ends of the two electric telescopic rods (23) are fixedly connected to a dust removal mechanism (605), and the dust removal mechanism (605) comprises a ventilation block (11) fixedly connected to the outer upper ends of the electric telescopic rods (23), a wind groove (13) is provided at the middle axis of the top of the ventilation block (11), and a plurality of ventilation holes (24) are provided on the right wall of the ventilation block (11); wherein the outer side of the bottom end of the electric telescopic rod (23) is fixedly connected to a power signal box (15).

2. The power signal detection device with good heat dissipation effect according to claim 1, characterized in that: A limiting mechanism (602) is fixedly connected at the center axis of the outer walls of the two ventilation blocks (11); the limiting mechanism (602) is fixedly connected to an elastic rope (12) at the center axis of the right wall of the ventilation block (11); a limiting block (22) is fixedly connected at the center axis of the upper end of the right wall of the placement slot (16); and the inner wall of the limiting block (22) is slidably connected to the middle end of the outer wall of the elastic rope (12).

3. The power signal detection device with good heat dissipation effect according to claim 2, characterized in that: The end of the elastic rope (12) away from the ventilation block (11) is fixedly connected to a cleaning mechanism (601), the cleaning mechanism (601) comprising a brush plate (51) fixedly connected to one end of the elastic rope (12), the left and right sides of the top of the placement groove (16) are respectively provided with moving grooves (52), the middle end of the left side of the moving groove (52) is provided with a falling prevention groove (53), the top of the brush plate (51) is slidably connected to the upper side of the top of the moving groove (52), the left and right sides of the brush plate (51) are provided with small square columns, the top of the brush plate (51) is provided with a plurality of brushes (21), and the upper and lower ends of the moving groove (52) are respectively fixedly connected to the central axis with springs (54).

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