China's first two-speed remote control crane was introduced in stone coal machinery

Recently, a domestic two-speed remote-control crane capable of realizing two kinds of lifting speeds and having both manual and remote control has been successfully developed at Shijiazhuang Coal Mine Machinery Co., Ltd. The crane adopts a hydraulic double-speed winch. The winch can increase the lifting speed of the crane from 6 meters per minute to 30 meters per minute according to the lifting weight, which greatly improves the lifting efficiency and safety, and fills the gap in the domestic industry.

Not long ago, the “four-linked rotating ferry crossing” independently developed by Shimite Co., Ltd. was used to change lanes between two parallel tracks in the same roadway under the mine, enabling the vehicle to smoothly and smoothly The track is transferred to another track while avoiding rolling and wearing of the wire rope. The switch has been successfully applied to the company's advanced rail track system with advanced international standards. It has obtained national patents and provided innovative equipment guarantees for building intrinsically safe mines.

It is understood that the ballast is an indispensable part of the railroad transportation system for coal mines. The transition between the two parallel tracks in the same laneway is completed by crossing the turnout. The traditional ferry crossings are the weak links in the track system. In particular, the track transport system using steel wire rope traction is also easy to produce more problems, reduces the transportation efficiency and safety factor, and restricts the application and development of the system. Therefore, the company has independently developed R&D and “four-linked rotating ferry crossings” based on more than forty years of R&D and manufacturing experience of coal mine underground auxiliary transportation equipment and special-shaped rail track transportation system R&D achievements.

When the ballast is used, the power train and the positioning device are used to rotate the movable track and the rotating curved track, accurately dock with the fixed track of the opposite track, and keep the track distance unchanged. At this time, the vehicle can pass the original track smoothly. The section rotation linkage crossing turns into the opposite track, and when the power unit moves again, the moving track and the turning track return to the original position. At this time, the two parallel tracks are restored respectively, and the vehicle can run in the original track, and the track is smooth and accurate. Safety. The U-shaped groove structure is adopted between the fixed sleeper and the cross-tie sleeper. The steel wire rope passes through the U-shaped groove to avoid the rolling of the track and the winding of the steel wire rope and the rolling of the steel wire rope by the vehicle during the steering process, so as to reduce the wear of the steel wire rope and enable the rope pulling vehicle to pass through the track smoothly. .