Abstract: A rubber belt retracting and deploying device for a belt conveyor includes a base, mounting frames, an upper caterpillar disk, a middle caterpillar disk and a lower caterpillar disk, wherein the lower caterpillar disk is fixedly connected between the symmetric mounting frames, and the middle caterpillar disk is movably connected between the symmetric mounting frames, and may longitudinally slide along the symmetric mounting, frames, such that the lower caterpillar disk and the middle caterpillar disk form a first clamping device; the upper caterpillar disk is movably connected between the symmetric mounting frames, and may longitudinally slide along the symmetric mounting frames, such that the upper caterpillar disk and the middle caterpillar disk form a second clamping device; each of the upper caterpillar disk, the middle caterpillar disk and the lower caterpillar disk is provided with a driving part.

Abstract: This invention discloses a hoisting sheave shaft, a hoisting sheave and a lubricating device thereof, where the hoisting sheave shaft is provided with a first oil injection channel extending axially; an oil inlet of the first oil injection channel is arranged on an end surface of the hoisting sheave shaft; the hoisting sheave shaft is also radially provided with at least one second oil injection channel; the second oil injection channel intersects with the first oil injection channel; and an oil outlet of the second oil injection channel is arranged on an outer circular surface of the hoisting sheave shaft.

Abstract: A vertical lifting device and method are provided. The vertical lifting device includes a fixed frame fixed to a foundation. A first cavity allowing passage of a lifting rope is provided in the middle of the fixed frame. A sliding frame moving horizontally on the fixed frame is arranged above the fixed frame. A second cavity allowing passage of the lifting rope is provided in the middle of the sliding frame. At least two stepping vehicles alternately lowering or lifting weights are arranged on the sliding frame and move on the sliding frame. The stepping vehicles are spaced in preset distances. The lifting rope penetrates through the stepping vehicles in sequence. Each stepping vehicle is provided with a clamping part clamping the lifting rope and a driving mechanism driving the stepping vehicle to move on the sliding frame.

Abstract: A rubber belt retracting and deploying device for a belt conveyor includes a base, mounting frames, an upper caterpillar disk, a middle caterpillar disk and a lower caterpillar disk, wherein the lower caterpillar disk is fixedly connected between the symmetric mounting frames, and the middle caterpillar disk is movably connected between the symmetric mounting frames, and may longitudinally slide along the symmetric mounting frames, such that the lower caterpillar disk and the middle caterpillar disk form a first clamping device; the upper caterpillar disk is movably connected between the symmetric mounting frames, and may longitudinally slide along the symmetric mounting frames, such that the upper caterpillar disk and the middle caterpillar disk form a second clamping device; each of the upper caterpillar disk, the middle caterpillar disk and the lower caterpillar disk is provided with a driving part.

Abstract: The present disclosure discloses a suspension device of a monorail crane and a monorail crane. The suspension device the suspension device comprises a suspension box and at least one set of suspension wheels; the suspension box is provided with a receiving groove for receiving at least one set of the suspension wheels; the receiving groove is provided with a first suspension wheel and a second suspension wheel; a first gap is formed the first suspension wheel and the second suspension wheel; the monorail comprises at least a first track on which the first suspension wheel is placed and a second track on which the second suspension wheel is placed; a spacer is provided between the first track and the second track; the first gap can accommodate at least the spacer; the suspension devices each further comprises a braking mechanism fixed to the suspension box.

Abstract: An experiment device for aiding in measuring abrasion of a conveyer, and a method for detecting abrasion of a conveyer, are provided. The device includes a rack, a reciprocation sliding mechanism, a speed adjusting mechanism and a crankshaft. The reciprocation sliding mechanism can include scrapers and scraper chains, and the scraper chains can be arranged between an upper-layer scraper and a lower-layer scraper. The speed adjusting mechanism can include a motor, a friction driving wheel and a friction driven wheel, and the motor is connected with the friction driving wheel through a motor shaft. The friction driving wheel slides on a shaft in an axial direction, and speed adjustment can be achieved by changing the distance between the centers of the friction driving wheel and the friction driven wheel.

Abstract: The present invention relates to a wire rope suspension device, control method and multi-rope friction lift system, the device comprising: a first beam (6) and a second beam (9) which are passed by a wire rope (1) and fixed to the wire rope (1); a suspension joint (15), for connecting a lifting container (30); a suspension cylinder (14), having two ends respectively connected to the second beam (9) and the suspension joint (15); a wedge joint (8), being disposed in an accommodating chamber provided inside the second beam (9); and a wire rope bias limiting mechanism, being disposed between the wedge joint (8) and the second beam (9), for driving the wedge joint (8) to lock a wire rope section on one side of the wedge joint (8) itself and releasing movement restriction of a wire rope section on the other side of the wedge joint (8), when the second beam (9) has a displacement with respect to the first beam (6) in a predetermined direction. The present invention allows a convenient rope adjustment operation.

Abstract: The present disclosure provides a two-stage blade adjusting device for a counter-rotating axial flow fan. A blade adjusting operation shaft is adjusted to drive a pair of bevel gears to transfer power to a threaded pair coaxial with a transmission shaft, the threaded pair transforms rotary motion of the bevel gears into linear motion to push thrust discs in hubs, the blade installation angle of a first impeller is thus adjusted, and a spacer bush transfers the power to adjust the blade installation angle of a second impeller, so that synchronous adjustment of two-stage blade installation angles is realized. The device is simple and compact in structure and low in manufacturing and maintenance cost, and can be widely applied to large, medium and small counter-rotating axial flow fans.

Abstract: There is provided a ventilation apparatus with counter-rotating impellers driven by long shaft, wherein an electric motor and a gearbox are placed outside the air duct by using a long shaft with an internally disposed slim shaft extending therefrom, and are connected with the first stage impeller and second stage impeller inside the air duct by using the long shaft and slim shaft extending therefrom. In this ventilation apparatus with counter-rotating impellers, the components of the ventilation apparatus are placed inside and outside the air duct respectively by using the transmission shaft, which is convenient for maintenance and operation. By remotely arranging the impellers at an axial distance, the hub of the impellers will no longer be affected by an internally disposed electric motor, so as to reduce the ventilation resistance to ventilation. The impellers can be switched between the single impeller rotation and the counter rotation of two impellers.

Abstract: The present invention relates to a wire rope suspension device, control method and multi-rope friction lift system, the device comprising: a first beam (6) and a second beam (9) which are passed by a wire rope (1) and fixed to the wire rope (1); a suspension joint (15), for connecting a lifting container (30); a suspension cylinder (14), having two ends respectively connected to the second beam (9) and the suspension joint (15); a wedge joint (8), being disposed in an accommodating chamber provided inside the second beam (9); and a wire rope bias limiting mechanism, being disposed between the wedge joint (8) and the second beam (9), for driving the wedge joint (8) to lock a wire rope section on one side of the wedge joint (8) itself and releasing movement restriction of a wire rope section on the other side of the wedge joint (8), when the second beam (9) has a displacement with respect to the first beam (6) in a predetermined direction. The present invention allows a convenient rope adjustment operation.

Abstract: Provided is an electromechanical-linkage hydraulic control gate valve actuator. The actuator includes a hand-operated speed-increasing gearbox assembly and a bidirectional throttle valve. In the present invention, a motor is driven to rotate through the hand-operated speed-increasing gearbox and thus a hydraulic system is driven to finally open and close a gate valve. An opening and closing speeds of the gate valve can be regulated and controlled through the bidirectional throttle valve. The present invention drives the motor through the hand-operated speed-increasing gearbox under emergency conditions such as repair and power failure, thereby controlling to open and close the gate valve. Meanwhile, a hydraulic system respectively regulates the speeds of two states of opening and closing through a bidirectional throttling technique, so as to effectively eliminate a water hammer phenomenon. The present invention has simple structure, light weight and modular installation, and enhances safety and reliability.

Abstract: The present invention discloses an experiment device and a method for detecting abrasion of a conveyer. The device comprises a rack, a reciprocation sliding mechanism, a speed adjusting mechanism and a crankshaft, wherein the reciprocation sliding mechanism comprises scrapers and scraper chains; the scraper chains are arranged between an upper-layer scraper and a lower-layer scraper; the speed adjusting mechanism comprises a motor, a friction driving wheel and a friction driven wheel; the motor is connected with the friction driving wheel through a motor shaft; the friction driving wheel slides on a shaft in an axial direction; speed adjustment can be achieved by changing the distance between the centers of the friction driving wheel and the friction driven wheel.

Abstract: The present disclosure provides a two-stage blade adjusting device for a counter-rotating axial flow fan. A blade adjusting operation shaft is adjusted to drive a pair of bevel gears to transfer power to a threaded pair coaxial with a transmission shaft, the threaded pair transforms rotary motion of the bevel gears into linear motion to push thrust discs in hubs, the blade installation angle of a first impeller is thus adjusted, and a spacer bush transfers the power to adjust the blade installation angle of a second impeller, so that synchronous adjustment of two-stage blade installation angles is realized. The device is simple and compact in structure and low in manufacturing and maintenance cost, and can be widely applied to large, medium and small counter-rotating axial flow fans.

Abstract: Provided is an electromechanical-linkage hydraulic control gate valve actuator. The actuator includes a hand-operated speed-increasing gearbox assembly and a bidirectional throttle valve. In the present invention, a motor is driven to rotate through the hand-operated speed-increasing gearbox and thus a hydraulic system is driven to finally open and close a gate valve. An opening and closing speeds of the gate valve can be regulated and controlled through the bidirectional throttle valve. The present invention drives the motor through the hand-operated speed-increasing gearbox under emergency conditions such as repair and power failure, thereby controlling to open and close the gate valve. Meanwhile, a hydraulic system respectively regulates the speeds of two states of opening and closing through a bidirectional throttling technique, so as to effectively eliminate a water hammer phenomenon. The present invention has simple structure, light weight and modular installation, and enhances safety and reliability.

Abstract: There is provided a ventilation apparatus with counter-rotating impellers driven by long shaft, wherein an electric motor and a gearbox are placed outside the air duct by using a long shaft with an internally disposed slim shaft extending therefrom, and are connected with the first stage impeller and second stage impeller inside the air duct by using the long shaft and slim shaft extending therefrom. In this ventilation apparatus with counter-rotating impellers, the components of the ventilation apparatus are placed inside and outside the air duct respectively by using the transmission shaft, which is convenient for maintenance and operation. By remotely arranging the impellers at an axial distance, the hub of the impellers will no longer be affected by an internally disposed electric motor, so as to reduce the ventilation resistance to ventilation. The impellers can be switched between the single impeller rotation and the counter rotation of two impellers.