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CN-224233961-U - Electromagnetic locking safety device of mining frequency converter

CN224233961UCN 224233961 UCN224233961 UCN 224233961UCN-224233961-U

Abstract

The utility model belongs to the technical field of mining equipment, and discloses an electromagnetic locking safety device of a mining frequency converter, which comprises an electromagnetic locking safety device body, wherein a heat dissipation hole is formed in the bottom of the electromagnetic locking safety device body, the back of the electromagnetic locking safety device body is fixedly connected with a driving motor, and the other end of an output shaft of the driving motor is fixedly sleeved with a lead screw. According to the electromagnetic locking safety device, the driving motor, the lead screw, the movable plate, the connecting rods and the sealing plates are arranged, when the driving motor operates, the lead screw rotates to drive the movable plate to move upwards, and then the connecting rods rotate to drive the two sealing plates to move in opposite directions, so that the purpose of sealing the radiating holes is achieved, external moisture is prevented from entering the electromagnetic locking safety device body through the radiating holes to cause corrosion of electromagnetic elements in the electromagnetic locking safety device body, and the service life of the electromagnetic locking safety device body is prolonged.

Inventors

  • QIU SHUANG
  • LI YANCONG
  • YAO JUNFA

Assignees

  • 徐州丹佛尼电气科技有限公司

Dates

Publication Date
20260512
Application Date
20250515

Claims (7)

  1. 1. The electromagnetic locking safety device of the mining frequency converter comprises an electromagnetic locking safety device body (1) and is characterized in that a radiating hole (2) is formed in the bottom of the electromagnetic locking safety device body (1), a driving motor (3) is fixedly connected to the back of the electromagnetic locking safety device body (1), a lead screw (4) is fixedly sleeved at the other end of an output shaft of the driving motor (3), a fixing block (8) is movably sleeved on the outer surface of the bottom end of the lead screw (4), the other end of the fixing block (8) is fixedly connected with the back of the electromagnetic locking safety device body (1), a movable plate (5) is sleeved on the outer surface of the lead screw (4) in a threaded manner, connecting rods (6) are hinged to the left side and the right side of the bottom of the movable plate (5), sealing plates (7) are hinged to the other ends of the connecting rods (6), and the two sealing plates (7) are movably connected with the inner walls of the electromagnetic locking safety device body (1).
  2. 2. The electromagnetic locking safety device of the mining frequency converter of claim 1, wherein the back surface of the electromagnetic locking safety device body (1) is fixedly connected with a limiting rod (9), and the outer surface of the limiting rod (9) is movably sleeved with the inner surface of the movable plate (5).
  3. 3. The electromagnetic locking safety device of the mining frequency converter of claim 1, wherein the electromagnetic locking safety device body (1) is provided with two mounting holes (10) on the left side and the right side of the front face, the number of the mounting holes (10) is two, and the two mounting holes (10) are symmetrical relative to the center of the electromagnetic locking safety device body (1).
  4. 4. The electromagnetic locking safety device of the mining frequency converter of claim 1, wherein a lock tongue (11) is movably sleeved in the electromagnetic locking safety device body (1), and the lock tongue (11) is cylindrical in appearance.
  5. 5. The electromagnetic locking safety device of the mining frequency converter of claim 1, wherein an unlocking button (12) is movably mounted on the left side of the front face of the electromagnetic locking safety device body (1), and an unlocking indicator lamp (13) positioned right below the unlocking button (12) is fixedly connected to the front face of the electromagnetic locking safety device body (1).
  6. 6. The electromagnetic locking safety device of the mining frequency converter of claim 1, wherein the front face of the electromagnetic locking safety device body (1) is movably connected with a pulling button (14) positioned on the right side of an unlocking button (12), and the outer surface of the pulling button (14) is rough.
  7. 7. The electromagnetic locking safety device of the mining frequency converter is characterized in that an emergency unlocking hole (15) positioned on the right side of a pulling button (14) is formed in the front face of the electromagnetic locking safety device body (1), the front face of the electromagnetic locking safety device body (1) is fixedly connected with a mounting plate (16) right above the emergency unlocking hole (15), the top of an inner cavity of the mounting plate (16) is fixedly connected with a spring (17), the bottom of the spring (17) is fixedly connected with a pull rod (18), the outer surface of the pull rod (18) is movably connected with the inner surface of the mounting plate (16), the outer surface of the pull rod (18) is movably connected with the inner wall of the front face of the electromagnetic locking safety device body (1), the back face of the pull rod (18) is fixedly connected with a baffle (19), and the outer surface of the baffle (19) is movably connected with the inner wall of the front face of the electromagnetic locking safety device body (1).

Description

Electromagnetic locking safety device of mining frequency converter Technical Field The utility model belongs to the technical field of mining equipment, and particularly relates to an electromagnetic locking safety device of a mining frequency converter. Background The electromagnetic locking is a device for preventing misoperation of electric equipment, which mainly utilizes an electromagnetic principle to realize locking of an operating mechanism of the electric equipment so as to ensure that the locking can only be carried out under specific electric conditions by operation conforming to preset logic, thereby avoiding electric accidents caused by misoperation and ensuring safe operation of an electric power system. Under mine environment, inflammable and explosive gases such as gas, coal dust and the like widely exist, a mine frequency converter is used as high-voltage equipment, the safe operation of the mine frequency converter is very important, and therefore an electromagnetic locking safety device is often used, the existing electromagnetic locking safety device can realize a basic locking function in the actual use process, but the existing electromagnetic locking safety device generally does not have a function of protecting a radiating hole, and due to the fact that the mine environment is moist, when the electromagnetic locking safety device is idle, the radiating hole is not blocked, external moisture can enter the electromagnetic locking safety device through the radiating hole, and then electromagnetic elements in the electromagnetic locking safety device are corroded, so that the service life of the electromagnetic locking safety device is influenced, and the electromagnetic locking safety device needs to be improved. Disclosure of utility model The utility model aims to solve the problems, and provides an electromagnetic locking safety device of a mining frequency converter, which has the advantage of heat dissipation hole protection. The electromagnetic locking safety device of the mining frequency converter comprises an electromagnetic locking safety device body, wherein a radiating hole is formed in the bottom of the electromagnetic locking safety device body, a driving motor is fixedly connected to the back of the electromagnetic locking safety device body, a screw rod is fixedly sleeved at the other end of an output shaft of the driving motor, a fixed block is movably sleeved on the outer surface of the bottom end of the screw rod, the other end of the fixed block is fixedly connected with the back of the electromagnetic locking safety device body, a movable plate is sleeved on the outer surface thread of the screw rod, connecting rods are hinged to the left side and the right side of the bottom of the movable plate, sealing plates are hinged to the other ends of the connecting rods, the number of the sealing plates is two, and the outer surfaces of the two sealing plates are movably connected with the inner wall of the electromagnetic locking safety device body. As a preferable technical scheme of the utility model, the back surface of the electromagnetic locking safety device body is fixedly connected with a limiting rod, and the outer surface of the limiting rod is movably sleeved with the inner surface of the movable plate. As a preferable technical scheme of the electromagnetic locking safety device, the left side and the right side of the front face of the electromagnetic locking safety device body are provided with the two mounting holes, and the two mounting holes are symmetrical relative to the center of the electromagnetic locking safety device body. As a preferable technical scheme of the electromagnetic locking safety device, a lock tongue is movably sleeved in the electromagnetic locking safety device body, and the lock tongue is cylindrical in appearance. As a preferable technical scheme of the electromagnetic locking safety device, an unlocking button is movably arranged on the left side of the front face of the electromagnetic locking safety device body, and an unlocking indicator lamp positioned right below the unlocking button is fixedly connected to the front face of the electromagnetic locking safety device body. As a preferable technical scheme of the electromagnetic locking safety device, the front face of the electromagnetic locking safety device body is movably connected with a pulling button positioned on the right side of an unlocking button, and the outer surface of the pulling button is rough. As a preferable technical scheme of the electromagnetic locking safety device, an emergency unlocking hole positioned on the right side of the pulling button is formed in the front face of the electromagnetic locking safety device body, the front face of the electromagnetic locking safety device body is fixedly connected with a mounting plate positioned right above the emergency unlocking hole, the top of an inner cavity of the mounting plate is fixedly connected with