2jtp series mine hoist The moving mechanical equipment of the load is drawn by the steel wire rope wound on the drum. It is mainly used for hauling vehicles underground or on the ground, removing pillars of coal mining face and other auxiliary transportation work.
According to the power is divided into electric, pneumatic and hydraulic. According to the force transmission mode between the wire rope and the drum, it can be divided into winding type and friction wheel type; according to the use, it can be divided into dispatching winch, column returning winch, endless rope winch and transportation winch.
Single wire rope traction and multi-layer winding winch used for dispatching tramcars and other auxiliary transportation work. The electrical equipment is explosion-proof and suitable for the occasions with coal dust and gas. It is mainly used in coal mine loading station or inclined roadway hauling car, and can also be used as other auxiliary transportation. The winch has adjustable working speed, temporary support and foundation installation. It has the characteristics of small volume, light weight and convenient operation. It is mainly composed of motor, transmission device, brake and base. The transmission device adopts the structure of differential gear train, fixed shaft gear train and differential gear train, and is assembled in the inner cavity or inner cavity and end of the drum. The brake adopts manual belt type (only for small size models) or manual brake shoe type. For large-scale models, hydraulic push rod safety brake is also installed. In the working process, changing the force of the brake on the differential component can change its working speed. The common technical parameters of dispatching winch are: the diameter of drum is 225-600mm; the static tension difference of wire rope is 9.8-39.2kn; the diameter of steel wire rope is 12.5-21.5mm; the speed of steel wire rope is 0.73-1.31m/s; the rope capacity of drum is 400-760m; and the motor power is 11-55kw.
Column return winch
Single steel wire rope traction and multi-layer winding winch used for column return operation in coal mine. The electrical equipment is explosion-proof and suitable for the occasions with coal dust and gas. This kind of winch has the characteristics of large traction force, low speed of steel wire rope, and can be used to pull or move by itself. It is mainly used for removing support equipment in coal mining face, and can also be used for lifting and lowering large equipment in inclined roadway. When it is used to remove the support equipment, it is generally installed in the coal mining face or return air roadway, with poor working conditions, the rated load is instantaneous, and moves with the advance of the working face. It is a kind of equipment with changeable working position and non fixed installation; when it is used for lifting and down enlarging equipment, it is a fixed installation type, and the brake must be used when working to ensure safety. In order to adapt to the specific conditions of the mining area, the overall layout width of the winch is narrow, the height is low, the length is slightly long, and it is rectangular structure; the temporary support position is reserved on the base; the anchor bolt holes for fixed installation and the technical measures for self traction and moving are adopted. There are two types of Winch: single speed and double speed. The single speed model is composed of motor, coupling, worm gear reducer, drum device, manual belt brake (not used for small size models), base, etc; The two speed model is composed of motor, coupling, orthogonal manual speed reducer, drum device, hydraulic push rod brake, base, etc. it has two kinds of wire rope speed, two kinds of traction force, two kinds of wire rope diameter and two rope capacity. Moreover, within the range of rated power, its basic parameters can be selected and combined according to needs. The common technical parameters of the column return winch are: the diameter of the drum is 276-510mm, the large static tension of the wire rope is 49-280kn; the diameter of the wire rope is 15.5-30mm; the speed of the wire rope is 0.102-0.367m/s; the rope capacity of the drum is 80-310m; and the motor power is 7.5-45kw.
Endless rope winch
The winch with single steel wire rope and endless friction drive is used for hauling mine cars near horizontal transportation line. It, together with tail wheel, track, tension balance car and counterweight device, forms an endless transportation system, which is used for hauling trams on underground or ground level or on small undulating slope (see Figure). The winch has explosion-proof and non explosion-proof models. It is composed of motor, coupling (hydraulic coupling), reducer, spindle device, brake, base, etc. There are three types of friction wheel on the spindle device: conical type, parabolic type and clamp type. The first two types of wire rope are wound in spiral way, the big end is tight side, hanging heavy vehicle, the small end is loose side, hanging empty car, the more the number of winding, the greater the friction force generated; the later type of wire rope winding in the clamp with a certain angle, the greater the force on the clamp, the greater the clamping force; After winding, the wire rope passes through the tail wheel and the tension balance car, and the two poles are connected again to form an endless rope ring. The tension balance car is freely placed on the track, one end is connected with the endless rope ring, and the other end is tightened by the counterweight device. When the winch is not in operation, the endless rope ring will produce initial tension; when it works, it will form tight side and loose edge, and move reversely through the coupling mechanism with heavy truck and empty car. Through the lifting and lowering of the counterweight device, the tension balance car is pulled to swim on the track to maintain a constant tension difference, thus realizing the endless transportation system. The common technical parameters of endless rope winch are drum diameter 500-2100mm, large static tension of wire rope 12-120kn, diameter of steel wire rope 13-34mm, speed of steel wire rope 1-1.2m/s and motor power of 15-130kw.
A small single wire hauling winch used for hauling a mine shaft. The electrical equipment is explosion-proof and suitable for the occasions with coal dust and gas. This kind of winch adopts the transmission structure of dispatching winch, the principle of speed regulation and the indication system of hoisting winch. It has the characteristics of compact structure, small volume, light weight and convenient handling. The common technical parameters of transportation winch are: large static tension of steel rope 20-40kn; diameter of steel wire rope is 18.5-21.5mm; speed of steel wire rope is 1.2-1.8m/s; rope capacity of drum is 650-950m; motor power is 45-75kw.