Normally closed electric brake

Abstract

A normally-closed type electric car stopper is composed of electric pushers, a control device of the electric pushers, a pulling rod, a rotary shaft and car stop blocks. The two electric pushers are respectively provided with a motor inside, the pulling rod is arranged between two motor pushing rods, a reset spring is arranged between each pushing rod and an upper frame, the lower end of the pulling rod is connected with a connecting rod, the connecting rod is connected with the rotary shaft through a transmission device, the two car stop blocks are arranged on the rotary shaft, and grooves are formed in the corresponding positions of the car stop blocks. The electric pushers are connected with the control device. The normally-closed type electric car stopper has the advantages that automatic control is achieved, the structure is simple, design is reasonable, maintenance is convenient, a whole hydraulic transmission mechanism is located above the ground and dragged by the two electric pushers, and stable and efficient operation of a mine car is guaranteed through multiple protection measures.

Description

technical field [0001] The invention relates to a device for stopping mine vehicles used in mines, in particular to a normally closed electric vehicle arrester. Background technique [0002] The traditional mine car stopper is a foot-operated connecting rod car stopper, which was born in the 1980s. There are two pedals and three pull rods. Due to the accumulated gaps, the car stopper block is not closed completely during use, making the mine car It is impossible to pass through the car arrester smoothly. At the same time, the linkage mechanism of the pedal linkage car arrester is all below the ground. Since 95% of the mining car arresters are installed underground and below the ground, as long as there is space below the ground, most of them will be covered by water. Flooding brings great trouble to the maintenance and use of the car stopper. In addition, the pedal connecting rod car arrester is bulky and difficult to maintain. Because the reliability of the equipment is lo...

AI Technical Summary

Problems solved by technology

[0002] The traditional car stopper for mines is a foot-operated link-type car stopper, which was born in the 1980s. There are two pedals and three pull rods. Due to the accumulated gaps, the stop block is not completely closed during use, making the mine car It is impossible to pass through the car arrester smoothly. At the same time, the linkage mechanism of the pedal linkage car arrester is all below the ground. Since 95% of mine car arresters are installed underground and below the ground, as long as there is space below the ground, most of them will be covered by water. Submerged, it brings a lot of trouble to the maintenance and use of the car stopper

In addition, the foot-operated connecting rod car arrester is bulky and difficult to maintain. Due to the low reliability of the device, the wellhead signal worker feels that the use of the device is troublesome and unreliable, which is illegal and easy to cause accidents.

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