Electromagnetic coil dispenser for improving waterproof performance

Abstract

The invention discloses a protective device for the occurrence of a mine roof fall, which includes a machine body. A load-bearing cavity 72 is provided in the machine body 10, a load-bearing platform 11 is fixedly arranged on the lower side of the machine body 10, and four circumferences of the machine body 10 are evenly distributed on the outside. The cavity 69 and the load-bearing cavity 72 are provided with a weight-bearing device 75 for lifting a weight. The weight-bearing device can withstand the falling top plate, and the hydraulic cylinder therein can make the device bear the pressure of the top plate on the device and fix the device at the same time. The stabilizing device can keep the device in a stable state under the action of pressure, will not fall, and share part of the pressure. The load-bearing device can support the device to support the pressure on the roof of the mine and drill into the ground. The fixing device can effectively Reduce the harm caused by the mine roof accident, reduce the accident casualties and various losses, and increase the safety rate in the mine production.

1 . A protection device for the occurrence of a mine roof fall includes a body, which is characterized in that: a load-bearing cavity is provided in the body, a load-bearing platform is fixed on the lower side of the body, and four circumferences are evenly distributed on the outside of the body A cavity, the weight-bearing cavity is provided with a weight-bearing device for lifting a heavy object;
 the weight supporting device includes a placing plate fixedly installed on the lower side wall of the load-bearing cavity. A protective shell is fixed on the side of the placing plate, and a protective shell is fixedly connected to the side of the placing plate. A main motor, the main motor is connected to a motor spline shaft, a first bevel gear is fixed on the motor spline shaft, and a second bevel gear shaft is rotatably connected to the left side wall of the protective housing, and the first A second bevel gear meshing with the first bevel gear is fixed on the right side of the second bevel gear shaft, and a first pulley fixedly connected to the second bevel gear shaft is provided on the left side of the second bevel gear. A large hydraulic cylinder is fixed on the side of the placing plate, and the large hydraulic cylinder is powered by a hydraulic rod. A hydraulic plate is fixed on the upper side of the hydraulic rod. A hydraulic column is fixed on the upper side of the hydraulic plate. A hydraulic spring is connected between the heavy platform and the hydraulic plate, and four supporting columns distributed in a circumferential array are fixed on the side of the placing plate, and a supporting spring is connected between the placing plate and the supporting platform;   a transmission cavity is provided in the load bearing platform, a drilling cavity is provided on the lower side of the transmission cavity, a weight bearing device is provided in the transmission cavity, and a load bearing platform is slidably connected to the upper side of the body, and the support A wheel cavity is provided in the weight table, a sliding cavity is provided on the upper side of the wheel cavity, and a stabilizing device for stabilizing the machine is provided on the outside of the body.   
     
     
         2 . The protection device according to  claim 1 , wherein a cylindrical groove is provided on the lower side of the supporting platform, and the motor spline extends axially through the protection housing. Entering into the cylindrical groove of the load bearing platform, the motor spline shaft is rotatably connected at the lower side of the pulley cavity, and a second pulley is fixed at the upper side of the motor spline shaft. A second wheel shaft is rotatably connected to the side wall, a second auxiliary wheel is fixed on the second wheel shaft, a second belt is connected between the second auxiliary wheel and the second pulley, and the sliding cavity slides The top block is connected with a large spiral hole and a small spiral hole in the top block, and a large spiral rod that spirally rotates with the top block in the large spiral hole is fixed on the upper side of the second wheel shaft. A spline screw is fixed on the upper side of the large spiral rod, and a spiral column block that can be spirally rotated on the side wall of the small spiral hole is slidably connected on the upper side of the spline screw drill. 
     
     
         3 . The protection device for a mine roof fall according to  claim 1 , wherein the stabilizing device comprises four connecting rods fixedly installed in a circumferential array distributed on the lower side of the supporting platform. The outside of the connecting rod is sleeved with a compression spring connected between the weight platform and the placing plate. The connecting rod extends downward through the placing plate and enters the cavity. The placing plate slides up and down, and a concave block is fixed on the lower side of each of the connecting rods. A rotating shaft is rotatably connected to the front and back sides of the cavity, and a connecting block is hinged to the rotating shaft. A torsion spring is connected between the shafts. A support rod is fixed on the connection block, a convex block is fixed on the lower side of the support rod, and a friction block is fixed on the upper side of the support rod. An upper engaging block is fixed on the inner side of the rod, and four lifting rods distributed in a circular array are fixed on the outer side of the supporting platform. A lower engaging block is fixed on the outer side of each lifting rod, and the upper engaging block is connected with the lower engaging block. The fit block fits. 
     
     
         4 . The protection device for a mine roof fall according to  claim 1 , wherein the load-bearing device comprises a first wheel shaft rotatably mounted on a right wall of the transmission cavity, and a right side of the first wheel shaft A first auxiliary wheel is fixedly installed, and a third bevel gear is fixed on the left side of the first wheel shaft. A first belt is connected between the first auxiliary wheel and the first pulley, and the transmission cavity and the A fourth bevel shaft is rotatably connected to the upper side wall of the transmission cavity between the drilling cavities, and a second gear meshing with the third bevel gear is fixed on the fourth bevel shaft. A first gear is fixed on the lower side of the fourth bevel gear shaft, and a symmetrical gear shaft is rotatably connected to the upper side wall of the drilling cavity. Each of the gear shafts is fixed with a coil spring. A fixed spline is fixed on the side, and a long spiral rod is rotatably connected inside the fixed spline. A fourth bevel gear is connected between the long spiral rod and the upper side wall of the drilling cavity. A small drill is fixed on the side.