Protection device and method for explosion-proof motor

Abstract

The invention relates to the technical field of explosion-proof motor protection devices, in particular to a protection device for an explosion-proof motor and a method thereof. Comprising a box body, a partition plate is arranged in the box body, a limiting groove is formed in the surface of the partition plate, a first air cylinder is arranged at the end of a sliding plate, and a piston rod at the end of the first air cylinder pushes the sliding plate to slide on the surface of the limiting groove; when the moving arm drives the arc-shaped clamping plate to move on the surface of the first lead screw, the moving arm drives the second lead screw to rotate through the transmission belt, the second lead screw drives the moving plate to move horizontally when rotating, the moving plate drives the sticking roller to rub with the bottom of the dustproof net when moving, and the dustproof net is clamped and limited through the clamping assembly. The dustproof net rotates on the surface of the moving plate under friction force, the surface of the sticking roller has adhesiveness, dust attached to the bottom of the dustproof net can be collected and removed, and the situation that the dustproof net is blocked by the dust, and the heat dissipation effect of the box body is affected is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of explosion-proof motor protection devices, and in particular to an explosion-proof motor protection device and a method thereof. Background Art

[0002] An explosion-proof motor is a motor that can be used in flammable and explosive places. It does not generate electric sparks during operation. Explosion-proof motors are mainly used in coal mines, oil and gas, petrochemical and chemical industries. In order to avoid damage to explosion-proof motors, protective devices are usually used to protect them.

[0003] There are many existing technologies for explosion-proof motor protection devices, such as:

[0004] Chinese patent publication number CN117277661A discloses a protective device for explosion-proof motors, which relates to the technical field of explosion-proof motors. The device discloses a protective shell, wherein two fixing grooves are provided in the protective shell, and a lifting mechanism is fixedly installed in the fixing grooves. By arranging two lifting mechanisms in the protective shell, it is no longer necessary to lift the explosion-proof motor when installing the explosion-proof motor, and the installation of the explosion-proof motor can be completed by lifting the protective shell, making the installation process of the explosion-proof motor more convenient. A cooling fan is arranged in the side shift plate, which cooperates with the heat dissipation net on the top of the protective shell to effectively ensure the heat dissipation effect of the explosion-proof motor. A plurality of adjustable limit blocks are arranged in the protective shell, which can fix the explosion-proof motor inside the protective shell to prevent the explosion-proof motor from shaking in the protective shell. A mounting frame is arranged in the protective shell, and a corresponding structure is arranged on the mounting frame. The heat dissipation net is continuously beaten by a beating block, which effectively prevents the heat from being difficult to dissipate due to dust falling on the surface of the heat dissipation net.

[0005] However, there are still some problems in actual use:

[0006] 1. The motor will inevitably vibrate during rotation. This continuous vibration will easily loosen the bolts that fix the motor. Once the bolts loosen, the position of the motor will become unstable during operation, which may cause the motor to collide with the inner wall of the box. This collision may generate sparks. In certain specific production environments, such as places with flammable and explosive substances, these sparks are very likely to cause serious safety accidents, bringing great safety hazards to production operations.

[0007] 2. External dust can easily enter the inside of the click through the heat dissipation holes of the protective shell. The winding inside the click is made of conductive material wrapped in insulating material. The dust may contain conductive particles. When these particles adhere to the surface of the insulation layer of the winding, a conductive path will gradually form, destroying the insulation and reducing the service life of the motor.

[0008] Therefore, a protection device and method for explosion-proof motors are proposed. Summary of the invention

[0009] The object of the present invention is to provide a protection device for explosion-proof motors and a method thereof to solve the problems raised in the above background technology.

[0010] In order to solve the above technical problems, one of the objectives of the present invention is to provide a protective device for an explosion-proof motor, including a box body, a partition plate is provided inside the box body, a limiting groove is provided on the surface of the partition plate, a groove is opened on the top of the box body, a heat dissipation component is provided in the groove, the heat dissipation component is used to dissipate heat inside the box body, a dust-proof net is provided at the bottom of the groove, a slide plate is slidably provided on the surface of the limiting groove, a first cylinder is provided at the end of the slide plate, a piston rod at the end of the first cylinder pushes the slide plate to slide on the surface of the limiting groove, an explosion-proof motor body is placed on the surface of the slide plate, clamping components are provided on both sides of the explosion-proof motor body, the clamping components are used to clamp and limit the explosion-proof motor body, and the clamping components clean the dust adhered to the surface of the dust-proof net during the process of clamping the explosion-proof motor body, a reinforcement component is provided above the explosion-proof motor body, the reinforcement component is used to reinforce the clamping component and at the same time push the heat dissipation component upward to speed up the air exchange speed between the inside and outside of the box body.

[0011] As a further improvement of the present technical solution, the clamping assembly includes a rotating motor arranged under the partition plate, a main gear is provided at the output end of the rotating motor, and sub gears are provided on both sides of the main gear. When the rotating motor rotates, it drives the sub gears to engage and rotate. A first screw rod is provided at the end of the sub gear, and a moving arm is provided on the surface of the first screw rod. The moving arm moves horizontally on the surface of the first screw rod, and an arc-shaped clamping plate is provided at the end of the moving arm. The relative movement of the moving arm is controlled on the surface of the first screw rod to clamp and fix the outer wall of the explosion-proof motor body through the arc-shaped clamping plate.

[0012] As a further improvement of the technical solution, a tooth plate is provided between the movable arm and the tooth plate, and the tooth plate is symmetrical. Limiting the tooth plate can prevent the movable arm from sliding to both sides.

[0013] As a further improvement of the technical solution, a second screw rod is provided above the first screw rod, and transmission shafts are provided at the ends of the first screw rod and the second screw rod, and a transmission belt is provided between the transmission shafts, so that the second screw rod is driven to rotate when the first screw rod rotates.

[0014] As a further improvement of the technical solution, the thread on the surface of the second screw rod is symmetrical, and a movable plate is provided on the surface of the second screw rod. The movable plate is symmetrically arranged on the surface of the second screw rod, and a sticky roller is provided on the surface of the movable plate. The sticky roller fits with the bottom of the dustproof net during movement, and the sticky roller rotates frictionally during movement to remove dust adhered to the bottom of the dustproof net.

[0015] As a further improvement of the technical solution, the reinforcement assembly includes a second cylinder arranged on the top of the box body, the piston rod at the end of the second cylinder passes through the box body and a clamping plate is provided at the end, and the clamping teeth at the bottom of the clamping plate are adapted to the tooth plate.

[0016] As a further improvement of the present technical solution, fixed racks are provided on both sides of the clamping plate, and when the fixed racks move in the vertical direction, they drive the rotating gear to rotate. A sliding rack is provided on one side of the rotating gear, and a push block is provided on the top of the sliding rack. The push block moves in the opposite direction to the rotating gear, and when the sliding rack drives the push block to move up in the vertical direction, it pushes the bottom of the heat dissipation assembly, so that the heat dissipation assembly is away from the groove provided on the top of the box.

[0017] As a further improvement of the present technical solution, the heat dissipation assembly includes a support plate arranged in the groove, and an exhaust fan is provided on the surface of the support plate. The exhaust fan is used to blow air to the outside of the box to accelerate the air circulation inside the box.

[0018] As a further improvement of the technical solution, a column tube is provided under the support plate, a sliding column is slidably provided on the inner wall of the column tube, an elastic member is provided between the column tube and the sliding column, and the automatic end of the sliding column is fixed to the bottom of the support plate.

[0019] A second object of the present invention is to provide a method for protecting an explosion-proof motor, comprising the explosion-proof motor protection device described in any one of the above, comprising the following steps:

[0020] S1. Control the first cylinder to drive the slide plate to slide on the surface of the limit groove, push the slide plate to the outside of the box, place the explosion-proof motor body on the slide plate surface and fix its bottom;

[0021] S2. Fix the side wall of the explosion-proof motor body fixed on the surface of the slide plate by the clamping assembly to prevent the motor from loosening and hitting the inner wall of the box to generate sparks. At the same time, the clamping assembly cleans the dust on the surface of the dustproof net to prevent the dust from clogging the dustproof net and affecting the heat dissipation effect of the box, thereby increasing the service life of the explosion-proof motor body;

[0022] S3. After the clamping assembly has completed the positioning of the explosion-proof motor body, the clamping assembly is reinforced by the reinforcement assembly to improve the clamping stability of the clamping assembly. At the same time, the reinforcement assembly pushes the heat dissipation assembly upward during the movement to speed up the air exchange speed between the inside and outside of the box.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] 1. In the protection device for explosion-proof motor, the main gear is driven to rotate by controlling the output end of the rotating motor. When the main gear rotates, it drives the sub gears provided on both sides to rotate. The first screw provided at the end of the sub gear rotates coaxially, and the moving arm provided on the surface of the first screw moves horizontally relatively. When the moving arm moves to fit closely with the side wall of the explosion-proof motor body, the output end of the rotating motor stops rotating, and the outer wall of the motor is clamped by the clamping force between the tooth plates, which improves the stability of the motor, avoids the motor shaking and hitting the inner wall of the box to generate sparks, and thus improves the safety of the operation.

[0025] 2. In the protection device for explosion-proof motors, when the arc-shaped clamping plate is driven to move on the surface of the first screw rod by the movable arm, the movable arm drives the second screw rod to rotate through the transmission belt. When the second screw rod rotates, it drives the movable plate to move horizontally. When the movable plate moves, it drives the sticky roller to rub against the bottom of the dustproof net. The dustproof net rotates on the surface of the movable plate due to the friction force. Since the surface of the sticky roller is adhesive, the dust attached to the bottom of the dustproof net can be collected and removed to prevent the dust from clogging the dustproof net and affecting the heat dissipation effect of the box.

[0026] 3. In the protection device for explosion-proof motor, the output end of the second cylinder is controlled to drive the clamping plate to move downward, and the clamping plate is limited when it moves to the toothed plate. When the explosion-proof motor body rotates and continuously generates vibration, the first screw rod can be prevented from rotating due to vibration, causing the moving arm to drive the arc clamping plate to move horizontally away from the surface of the explosion-proof motor body, thereby improving the stability of the device. In the process of the clamping plate moving downward, the fixed rack is driven downward, and the rotating gear is driven to rotate when the fixed rack moves downward. The sliding rack provided on one side of the rotating gear moves in the opposite direction of the rotating gear. The sliding rack drives the push block to push the bottom of the support plate when it moves vertically upward. The support plate is subjected to force to drive the sliding column to slide on the inner wall of the column tube, and at the same time, the elastic member is stretched to make the support plate away from the groove provided on the top of the box body. When the exhaust fan rotates, air is blown to the outside, thereby accelerating the circulation of external air and internal air of the box body, thereby improving the cooling efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a cross-sectional view of the overall structure of the present invention;

[0028] Figure 2 It is a structural schematic diagram of the present invention;

[0029] Figure 3 It is a structural front view of the present invention;

[0030] Figure 4 It is a schematic diagram of the structure of the clamping assembly of the present invention;

[0031] Figure 5 For the present invention Figure 4 Schematic diagram of point A;

[0032] Figure 6 It is a schematic diagram of the structure of the dustproof net of the present invention;

[0033] Figure 7 It is a schematic diagram of the structure of the reinforcement component of the present invention;

[0034] Figure 8 It is a schematic diagram of the structure of the heat dissipation component of the present invention.

[0035] The meaning of each number in the figure is:

[0036] 100, box body; 101, partition plate; 102, limit groove; 103, rotating gear; 104, dust screen;

[0037] 200, first cylinder; 201, slide plate; 202, explosion-proof motor body;

[0038] 300, clamping assembly; 301, rotating motor; 302, main gear; 303, first screw rod; 304, moving arm; 305, arc clamping plate; 306, tooth plate; 307, second screw rod; 308, moving plate; 309, sticking roller; 310, transmission shaft;

[0039] 400, reinforcement assembly; 401, second cylinder; 402, clamping plate; 403, fixed rack; 404, sliding rack; 405, push block;

[0040] 500, heat dissipation component; 501, support plate; 502, exhaust fan; 503, column; 504, sliding column; 505, elastic member. DETAILED DESCRIPTION

[0041] 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.

[0042] One of the purposes of the present invention is to provide a protection device for explosion-proof motors. Figure 1-Figure 8As shown, the box body 100 includes a partition plate 101 inside the box body 100, a limiting groove 102 is provided on the surface of the partition plate 101, a groove is provided on the top of the box body 100, a heat dissipation component 500 is provided in the groove, and the heat dissipation component 500 is used to dissipate heat inside the box body 100, a dustproof net 104 is provided at the bottom of the groove, a slide plate 201 is slidably provided on the surface of the limiting groove 102, a first cylinder 200 is provided at the end of the slide plate 201, and a piston rod at the end of the first cylinder 200 pushes the slide plate 201 to slide on the surface of the limiting groove 102, and the surface of the slide plate 201 is placed An explosion-proof motor body 202 is provided, and clamping assemblies 300 are provided on both sides of the explosion-proof motor body 202. The clamping assemblies 300 are used to clamp and limit the explosion-proof motor body 202. The clamping assemblies 300 clean the dust adhered to the surface of the dustproof net 104 during the clamping process of the explosion-proof motor body 202. A reinforcement assembly 400 is provided above the explosion-proof motor body 202. The reinforcement assembly 400 is used to reinforce the clamping assembly 300 and simultaneously push the heat dissipation assembly 500 upward to speed up the air exchange speed between the inside and outside of the box 100.

[0043] Considering that when the motor is placed on the surface of the partition plate 101, when the motor is started, it is easy to shake if it is not fixed firmly. Since the surface of the motor is made of metal, sparks are easy to generate during the collision with the inner wall of the box body 100, posing a safety hazard to the work site. Therefore, the clamping assembly 300 includes a rotating motor 301 arranged under the partition plate 101, and a main gear 302 is provided at the output end of the rotating motor 301. Sub gears are provided on both sides of the main gear 302. When the rotating motor 301 rotates, it drives the sub gears to mesh and rotate. A first screw rod 303 is provided at the end of the sub gear. A moving arm 304 is provided on the surface of the first screw rod 303. The moving arm 304 moves horizontally on the surface of the first screw rod 303. An arc clamping plate 305 is provided at the end of the moving arm 304 to control the relative movement of the moving arm 304. The surface of a screw rod 303 is clamped and fixed to the outer wall of the explosion-proof motor body 202 by an arc-shaped clamping plate 305. When the explosion-proof motor body 202 is placed on the surface of the partition plate 101, the main gear 302 is driven to rotate by controlling the output end of the rotating motor 301. When the main gear 302 rotates, it drives the sub-gears on both sides to rotate. The first screw rod 303 provided at the end of the sub-gear rotates coaxially, and the moving arm 304 provided on the surface of the first screw rod 303 moves horizontally relative to each other. When the moving arm 304 moves to fit closely with the side wall of the explosion-proof motor body 202, the output end of the rotating motor 301 stops rotating, and the outer wall of the motor is clamped by the clamping force between the tooth plates 306, which improves the stability of the motor and prevents the motor from shaking and hitting the inner wall of the box body 100 to generate sparks, thereby improving the safety of the operation.

[0044] Taking into account that during the process of the arc-shaped clamping plate 305 clamping the motor, due to the vibration generated on the surface of the motor output shaft during the rotation, when the arc-shaped clamping plate 305 is clamped on the side wall of the explosion-proof motor body 202 for a long time, the movable arm 304 is vibrated and drives the arc-shaped clamping plate 305 away from the motor surface, causing the motor to produce abnormal noise. Therefore, a tooth plate 306 is provided between the movable arm 304 and the tooth plate 306, and the tooth plate 306 is symmetrical. Limiting the tooth plate 306 can prevent the movable arm 304 from sliding to both sides. When the movable arm 304 drives the arc-shaped clamping plate 305 to move horizontally to clamp and fix the side wall of the explosion-proof motor body 202, by limiting the clamping assembly 300, the movable arm 304 is prevented from being driven away from the surface of the explosion-proof motor body 202 due to the vibration of the explosion-proof motor body 202, thereby improving the clamping force of the arc-shaped clamping plate 305 and preventing the explosion-proof motor body 202 from producing abnormal noise when rotating.

[0045] When dust falls into the box body 100, since the winding inside the motor is composed of conductive material wrapped in insulating material, the dust may contain conductive particles. When these particles adhere to the surface of the insulating layer of the winding, a conductive path will gradually be formed, and the insulation will be destroyed, which may cause the motor to discharge between phases or to the ground, causing motor failure or even burning. Therefore, a second screw rod 307 is provided above the first screw rod 303, and transmission shafts 310 are provided at the ends of the first screw rod 303 and the second screw rod 307. A transmission belt is provided between the transmission shafts 310. When the first screw rod 303 rotates, it drives the second screw rod 307 to rotate. The thread on the surface of the second screw rod 307 is symmetrical. A movable plate 308 is provided on the surface of the second screw rod 307. The movable plate 308 is symmetrically arranged on the surface of the second screw rod 307. A sticky roller 309 is provided on the surface of the movable plate 308. The sticky roller 309 is in contact with the bottom of the dustproof net 104 during the movement. The sticky roller 309 rotates against the dustproof net 104 during the movement. The dust adhered to the bottom of the dustproof net 104 is removed. By providing a dustproof net 104 at the bottom of the groove, the dustproof net 104 blocks the external dust. When the explosion-proof motor body 202 is clamped and fixed, the movable arm 304 drives the arc clamping plate 305 to move on the surface of the first screw rod 303, and the movable arm 304 drives the second screw rod 307 to rotate through the transmission belt. The second screw rod 307 drives the movable plate 308 to move horizontally when rotating. When the movable plate 308 moves, it drives the sticky roller 309 to rub against the bottom of the dustproof net 104. The dustproof net 104 rotates on the surface of the movable plate 308 due to the adhesion of the sticky roller 309. Therefore, the dust attached to the bottom of the dustproof net 104 can be collected and removed, so as to avoid the dust blocking the dustproof net 104 and affecting the heat dissipation effect of the box 100. At the same time, it prevents the dust from falling into the explosion-proof motor body 202, thereby improving the service life of the explosion-proof motor body 202.

[0046] Considering that the explosion-proof motor body 202 will inevitably vibrate when the motor rotates during output operation, the motor shaft needs to maintain good concentricity during rotation to ensure the normal operation of mechanical equipment connected to the motor, such as pulleys and couplings. If the motor is not fixed stably, the motor may shake during operation, causing the concentricity of the motor shaft to be destroyed. Therefore, the reinforcement component 400 includes a second cylinder 401 disposed on the top of the box body 100, and the piston rod at the end of the second cylinder 401 passes through the box body 100 and is provided with a clamping plate 402 at the end. The clamping teeth at the bottom of the clamping plate 402 are adapted to the tooth plate 306. When a screw rod 303 rotates, it drives the movable arm 304 to move horizontally, so that the arc-shaped clamping plate 305 provided at the end of the movable arm 304 clamps and fixes the outer wall of the motor. After the clamping is completed, the clamping plate 402 is driven downward by controlling the output end of the second cylinder 401. When the clamping plate 402 moves to the tooth plate 306, the position of the tooth plate 306 is limited. When the explosion-proof motor body 202 rotates and continuously vibrates, the first screw rod 303 can be prevented from vibrating and rotating, causing the movable arm 304 to drive the arc-shaped clamping plate 305 to move horizontally away from the surface of the explosion-proof motor body 202, thereby avoiding damage to the mechanical equipment and increasing the service life of the equipment.

[0047] During the rotation of the explosion-proof motor body 202, a lot of heat is generated inside it. If the heat cannot be dissipated in time, it is easy to cause circuit damage, affecting the normal use of the explosion-proof motor body 202. Therefore, fixed racks 403 are provided on both sides of the clamping plate 402. When the fixed rack 403 moves in the vertical direction, it drives the rotating gear 103 to rotate. A sliding rack 404 is provided on one side of the rotating gear 103. A push block 405 is provided on the top of the sliding rack 404. The push block 405 moves in the opposite direction to the rotating gear 103. When the sliding rack 404 drives the push block 405 to move up in the vertical direction, it pushes the bottom of the heat dissipation component 500 to make the heat dissipation component 500 away from the groove provided on the top of the box 100. When it is necessary to rotate the running explosion-proof motor body 202, the clamping plate is driven by the second cylinder 401 402 limits the tooth plate 306 to prevent the explosion-proof motor body 202 from shaking during the rotation process. When the clamping plate 402 moves downward, it drives the fixed rack 403 to move downward. When the fixed rack 403 moves downward, it drives the rotating gear 103 to rotate. The sliding rack 404 provided on one side of the rotating gear 103 moves in the opposite direction of the rotating gear 103. The sliding rack 404 drives the push block 405 to move vertically upward to push the bottom of the support plate 501. The support plate 501 is forced to drive the sliding column 504 to slide on the inner wall of the column tube 503, and at the same time, the elastic member 505 is stretched to make the support plate 501 away from the groove provided on the top of the box body 100. When the exhaust fan 502 rotates, it blows air to the outside, thereby accelerating the circulation of external air and the air inside the box body 100, and improving the cooling efficiency.

[0048] Considering that the explosion-proof motor body 202 is likely to generate a lot of heat in the process of use, in order to avoid excessive heat inside the box 100, accelerate the aging of the internal parts of the explosion-proof motor body 202, and affect the service life of the explosion-proof motor body 202, the heat dissipation component 500 includes a support plate 501 arranged in the groove, and the surface of the support plate 501 is provided with an exhaust fan 502, and the exhaust fan 502 is used to blow air to the outside of the box 100 to accelerate the air circulation inside the box 100. There is a column 503, and a sliding column 504 is slidingly provided on the inner wall of the column 503. An elastic member 505 is provided between the column 503 and the sliding column 504. The sliding column 504 is automatically fixed at the bottom of the support plate 501. When the explosion-proof motor body 202 rotates, the exhaust fan 502 is used to blow air to the outside, so that the inside of the box body 100 is in a negative pressure state, thereby accelerating the flow of external air to the inside of the box body 100, and realizing rapid cooling of the explosion-proof motor body 202, thereby increasing the service life of the explosion-proof motor body 202.

[0049] When in use, the back plate of the box body 100 is disassembled, and the first cylinder 200 is controlled to drive the slide plate 201 to slide on the surface of the limiting groove 102, and the slide plate 201 is pushed to the outside of the box body 100, and the explosion-proof motor body 202 is placed on the surface of the slide plate 201 and its bottom is fixed. After the fixing is completed, the first cylinder 200 drives the slide plate 201 to slide into the inside of the box body 100, and the output end of the rotating motor 301 is controlled to drive the main gear 302 to rotate. When the main gear 302 rotates, it drives the sub-gears on both sides to rotate, and the first screw rod 303 provided at the end of the sub-gear rotates coaxially, and the moving arm 304 provided on the surface of the first screw rod 303 moves horizontally relative to each other. When the moving arm 304 moves to the side wall of the explosion-proof motor body 202 and fits closely, the output end of the rotating motor 301 stops rotating, and the outer wall of the motor is clamped by the clamping force between the tooth plates 306, which improves the stability of the motor, avoids the motor shaking and hitting the inner wall of the box body 100 to generate sparks, thereby improving the safety of the operation;

[0050] When the movable arm 304 drives the arc clamping plate 305 to move on the surface of the first screw rod 303, the movable arm 304 drives the second screw rod 307 to rotate through the transmission belt. When the second screw rod 307 rotates, it drives the movable plate 308 to move horizontally. When the movable plate 308 moves, it drives the sticky roller 309 to rub against the bottom of the dustproof net 104. The dustproof net 104 rotates on the surface of the movable plate 308 due to the friction force. Since the surface of the sticky roller 309 is adhesive, the dust attached to the bottom of the dustproof net 104 can be collected and removed, so as to avoid the dust from clogging the dustproof net 104 and affecting the heat dissipation effect of the box 100. At the same time, it prevents dust from falling into the explosion-proof motor body 202, thereby improving the service life of the explosion-proof motor body 202.

[0051] When the first screw rod 303 rotates, the movable arm 304 is driven to move horizontally, so that the arc-shaped clamping plate 305 provided at the end of the movable arm 304 clamps and fixes the outer wall of the motor. After the clamping is completed, the clamping plate 402 is driven to move downward by controlling the output end of the second cylinder 401. When the clamping plate 402 moves to the tooth plate 306, the position of the tooth plate 306 is limited. When the explosion-proof motor body 202 rotates and continuously vibrates, the first screw rod 303 can be prevented from vibrating and rotating, causing the movable arm 304 to drive the arc-shaped clamping plate 305 to move horizontally away from the surface of the explosion-proof motor body 202, thereby avoiding damage to the mechanical equipment and improving the service life of the equipment.

[0052] By controlling the output end of the second cylinder 401 to drive the clamping plate 402 to move downward, the clamping plate 402 is limited when it moves to the toothed plate 306. When the explosion-proof motor body 202 rotates and continuously vibrates, the first screw rod 303 can be prevented from vibrating and rotating, causing the moving arm 304 to drive the arc clamping plate 305 to move horizontally away from the surface of the explosion-proof motor body 202, thereby improving the stability of the device. When the clamping plate 402 moves downward, it drives the fixed rack 403 to move downward. When the fixed rack 403 moves downward, it drives the rotating gear 103 to rotate, and the rotating gear 103 rotates. The sliding rack 404 provided on one side of the gear 103 moves in the opposite direction of the rotating gear 103, and the sliding rack 404 drives the push block 405 to push the bottom of the support plate 501 when moving vertically upward. The support plate 501 is driven by the force to drive the sliding column 504 to slide on the inner wall of the column tube 503, and at the same time, the elastic member 505 is stretched to make the support plate 501 away from the groove provided on the top of the box body 100, and blow air to the outside during the rotation of the exhaust fan 502, thereby accelerating the circulation of external air and the internal air of the box body 100 and improving the cooling efficiency.

[0053] A second object of the present invention is to provide a method for protecting an explosion-proof motor, comprising any one of the above-mentioned explosion-proof motor protection devices, comprising the following steps:

[0054] S1. Control the first cylinder 200 to drive the slide plate 201 to slide on the surface of the limiting groove 102, push the slide plate 201 to the outside of the box 100, place the explosion-proof motor body 202 on the surface of the slide plate 201 and fix its bottom;

[0055] S2. Fix the side wall of the explosion-proof motor body 202 fixed on the surface of the slide plate 201 by the clamping assembly 300 to prevent the motor from loosening and hitting the inner wall of the box 100 to generate sparks. At the same time, the clamping assembly 300 cleans the dust on the surface of the dustproof net 104 to prevent the dust from clogging the dustproof net 104 and affecting the heat dissipation effect of the box 100, thereby improving the service life of the explosion-proof motor body 202;

[0056] S3. After the clamping assembly 300 has completed the positioning of the explosion-proof motor body 202, the clamping assembly 300 is reinforced by the reinforcement assembly 400 to improve the clamping stability of the clamping assembly 300. At the same time, the reinforcement assembly 400 pushes the heat dissipation assembly 500 upward during the movement to speed up the air exchange speed between the inside and outside of the box 100.

[0057] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not intended to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A protective device for explosion-proof motors, characterized in that: The invention comprises a box body (100), wherein a partition plate (101) is provided inside the box body (100), a limiting groove (102) is provided on the surface of the partition plate (101), a groove is provided on the top of the box body (100), a heat dissipation component (500) is provided in the groove, and the heat dissipation component (500) is used to dissipate heat inside the box body (100), a dustproof net (104) is provided at the bottom of the groove, a slide plate (201) is slidably provided on the surface of the limiting groove (102), a first cylinder (200) is provided at the end of the slide plate (201), a piston rod at the end of the first cylinder (200) pushes the slide plate (201) to slide on the surface of the limiting groove (102), and the slide plate ( An explosion-proof motor body (202) is placed on the surface of the explosion-proof motor body (201), and clamping components (300) are provided on both sides of the explosion-proof motor body (202). The clamping components (300) are used to clamp and limit the explosion-proof motor body (202). The clamping components (300) clean the dust adhered to the surface of the dustproof net (104) during the process of clamping the explosion-proof motor body (202). A reinforcement component (400) is provided above the explosion-proof motor body (202), and the reinforcement component (400) is used to reinforce the clamping component (300) and simultaneously push the heat dissipation component (500) upward to accelerate the air exchange speed between the inside and outside of the box (100).

2. The explosion-proof motor protection device according to claim 1, characterized in that: The clamping assembly (300) comprises a rotating motor (301) arranged below the partition plate (101); a main gear (302) is arranged at the output end of the rotating motor (301); and sub gears are arranged on both sides of the main gear (302); when the rotating motor (301) rotates, the sub gears are driven to mesh and rotate; a first screw rod (303) is arranged at the end of the sub gear; a moving arm (304) is arranged on the surface of the first screw rod (303); the moving arm (304) moves horizontally on the surface of the first screw rod (303); an arc-shaped clamping plate (305) is arranged at the end of the moving arm (304); the moving arm (304) is controlled to move relatively on the surface of the first screw rod (303) to clamp and fix the outer wall of the explosion-proof motor body (202) through the arc-shaped clamping plate (305).

3. The explosion-proof motor protection device according to claim 2, characterized in that: A tooth plate (306) is provided between the movable arm (304) and the tooth plate (306); the tooth plate (306) is symmetrical, and limiting the tooth plate (306) can prevent the movable arm (304) from sliding to both sides.

4. The explosion-proof motor protection device according to claim 2, characterized in that: A second screw rod (307) is arranged above the first screw rod (303), and transmission shafts (310) are arranged at the ends of the first screw rod (303) and the second screw rod (307). A transmission belt is arranged between the transmission shafts (310), and when the first screw rod (303) rotates, the second screw rod (307) is driven to rotate.

5. The explosion-proof motor protection device according to claim 4, characterized in that: The thread on the surface of the second screw rod (307) is symmetrical, and a movable plate (308) is provided on the surface of the second screw rod (307). The movable plate (308) is symmetrically arranged on the surface of the second screw rod (307), and a sticky roller (309) is provided on the surface of the movable plate (308). The sticky roller (309) is in contact with the bottom of the dustproof net (104) during movement, and the sticky roller (309) is frictionally rotated during movement to remove dust adhered to the bottom of the dustproof net (104).

6. The explosion-proof motor protection device according to claim 1, characterized in that: The reinforcement component (400) comprises a second cylinder (401) arranged on the top of the box body (100), a piston rod at the end of the second cylinder (401) passes through the box body (100) and a clamping plate (402) is provided at the end, and the clamping teeth at the bottom of the clamping plate (402) are adapted to the tooth plate (306).

7. The explosion-proof motor protection device according to claim 6, characterized in that: Fixed racks (403) are provided on both sides of the clamping plate (402). When the fixed racks (403) move in the vertical direction, they drive the rotating gear (103) to rotate. A sliding rack (404) is provided on one side of the rotating gear (103). A push block (405) is provided on the top of the sliding rack (404). The push block (405) moves in opposite directions to the rotating gear (103). When the sliding rack (404) drives the push block (405) to move upward in the vertical direction, it pushes the bottom of the heat dissipation component (500), so that the heat dissipation component (500) is away from the groove provided on the top of the box (100).

8. The explosion-proof motor protection device according to claim 7, characterized in that: The heat dissipation assembly (500) comprises a support plate (501) arranged in the groove, and an exhaust fan (502) is arranged on the surface of the support plate (501). The exhaust fan (502) is used to blow air to the outside of the box (100) to accelerate the air circulation inside the box (100).

9. The explosion-proof motor protection device according to claim 8, characterized in that: A column tube (503) is provided below the support plate (501), a sliding column (504) is slidably provided on the inner wall of the column tube (503), an elastic member (505) is provided between the column tube (503) and the sliding column (504), and the sliding column (504) is automatically fixed at the bottom of the support plate (501).

10. A method for protecting an explosion-proof motor, implemented by the explosion-proof motor protection device according to any one of claims 1 to 9, characterized in that: The steps include: S1, controlling the first cylinder (200) to drive the slide plate (201) to slide on the surface of the limiting groove (102), pushing the slide plate (201) to the outside of the box (100), placing the explosion-proof motor body (202) on the surface of the slide plate (201) and fixing its bottom; S2. The side wall of the explosion-proof motor body (202) fixed to the surface of the slide plate (201) is fixed by a clamping assembly (300) to prevent the motor from loosening and hitting the inner wall of the box (100) to generate sparks. At the same time, the clamping assembly (300) cleans the dust on the surface of the dustproof net (104) to prevent the dust from clogging the dustproof net (104) and affecting the heat dissipation effect of the box (100), thereby improving the service life of the explosion-proof motor body (202); S3. After the clamping assembly (300) has completed the position limiting of the explosion-proof motor body (202), the clamping assembly (300) is reinforced by the reinforcement assembly (400) to improve the clamping stability of the clamping assembly (300). At the same time, the reinforcement assembly (400) pushes the heat dissipation assembly (500) upward during the movement, thereby accelerating the air exchange speed between the inside and outside of the box (100).

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