The invention discloses a device and method for monitoring the composite bending fatigue damages of a main shaft of a kilometer deep well elevator, and the device comprises a base frame, a main shaft apparatus, a loading system, and a state monitoring system, wherein the main shaft apparatus and the loading system are disposed on the base frame, and the state monitoring system is disposed on the main shaft apparatus. The main shaft apparatus comprises the main shaft, and the central part of the main shaft is provided with a main rolling barrel. The main shaft is provided with a flange plate, and two sides of the main rolling barrel are connected with the flange plate. The interior of a rope groove of the main rolling barrel is provided with a steel wire rope in a winding manner. One end of the main shaft is provided with a bearing A, and the other end of the main shaft is provided with a bearing B. The bearing A is disposed in a bearing A seat, and the bearing B is disposed in a bearing B seat. The loading system comprises a first loading system and a second loading system, which are disposed at two ends of the steel wire rope. The state monitoring system comprises a tension monitoring system, a stress measurement system, a torque measurement system, and a crack monitoring system. The device can simulate composite bending fatigue behaviors of the main shaft of the kilometer deep well elevator in a lifting process under the conditions of different vibration and impact, and dynamically monitors the evolution mechanism of the composite bending fatigue cracks of the main shaft of the elevator.

Device and method for monitoring composite bending fatigue damages of main shaft of kilometer deep well elevator

The invention discloses a device and method for improving detection of layer-to-layer transition of steel wire ropes. The device comprises a reeling barrel assembly, a steel wire rope tensioning assembly, a steel wire rope loading assembly and a lead screw sliding assembly. The reeling barrel assembly is used for winding the steel wire ropes on a reeling barrel and can drive the reeling barrel to rotate. The reeling barrel assembly and the lead screw sliding assembly are installed on a bottom frame (1). The steel wire rope tensioning assembly is connected with the steel wire rope loading assembly through a threaded rod and a static torque sensor (28). The steel wire rope loading assembly is arranged on perpendicular bare shaft guide rails (4) through sliding blocks (9) in a sleeving mode. According to the device and method for improving detection of layer-to-layer transition of the steel wire ropes, friction and vibration activities among the steel wire ropes in the multilayer winding layer-changing climbing stage of the steel wire ropes on the reeling barrel can be simulated, and the tensile forces of the straight steel wire ropes and the bent steel wire ropes, the twisting force of the straight steel wire ropes and the friction forces and the vibration acceleration among the wound steel wire ropes, the straight steel wire ropes and the bent steel wire ropes during layer-to-layer transition can be measured in real time.

Device and method for improving detection of layer-to-layer transition of steel wire ropes

The invention discloses a steel wire rope internal multi-wire spiral contact fatigue, wear and damage detection device and a detection method. The device comprises a supporting device and a state monitoring device; and the supporting device is provided with a fatigue steel wire loading assembly and a steel wire loading assembly which is in spiral contact with a fatigue steel wire with a certain crossing angle and a pre-stress force. With the device of the invention adopted, the spiral contact fretting fatigue damage condition of a plurality of steel wires in a steel wire rope can be simulated;the torque, friction force, temperature field and friction coefficient of the steel wires inside the steel wire rope can be monitored in real time; a multi-steel wire spiral contact fretting fatiguefracture mechanism is revealed, and the fretting damage evolution of the steel wires and the fretting fatigue lives of the steel wires can be evaluated.

Steel wire rope internal multi-wire spiral contact fatigue, wear and damage detection device and detection method

The invention discloses a bending elastic impact vibration detection and analysis method and apparatus for a horizontal steel wire rope. The apparatus comprises fixed standing columns, steel wire ropeconnecting members, a pre-tightening system, a bending and triggering system and a measuring system. The left and right fixed standing columns are arranged and are used for fixing two ends of a steelwire rope; the space between the standing columns is kept to be larger than the length of the steel wire rope by about 1.5cm to leave the mounting space for a tension sensor and the like. The standing columns are fixed to the ground firmly, so that the pretightening force of the steel wire rope is met and the standing columns are protected from deforming and shaking during the ejection process. The steel wire rope connecting members are two wedge-shaped blocks specially for the steel wire rope and are connected with the two ends of the steel wire rope; with the wedge-shaped blocks, the steelwire rope is strained tightly and the rope ends are prevented from being loosened during the ejection process. According to the invention, with the disclosed method and device, the steel wire rope releases the ejection condition instantaneously under different pre-tightening forces at different bending angles; and the volatility state and the transfer mode of the ejection tension and vibration ofthe steel wire rope on the rope string are detected and analyzed.

Bending elastic impact vibration detection and analysis method and apparatus for horizontal steel wire rope

The invention relates to a detection and testing device for the friction performance of a joint bearing liner and a mounting method of the detection and testing device and aims to solve the problem that the spindle of a detection device for the friction performance of a self-lubricating liner breaks easily under high-rotation-speed and small-size conditions. The detection and testing device is characterized in that a cylindrical metal ring is arranged on the outer side of a spindle in a matched manner, a conical hole and a circular hole which are communicated are arranged in the middle of the metal ring in a penetrating manner, the taper of the conical hole corresponds the conical section of the spindle, and the diameter of the circular hole corresponds to the small diameter section of the spindle; the maximum diameter of the conical hole is smaller than the maximum diameter of the conical section. The detection and testing device has the advantages that the connection structure of the spindle and a friction pair allows the spindle to be stable in operation and less prone to breaking, taper face combination increases contact area, the friction force between the spindle and a joint bearing is increased, and swinging force can be transmitted stably.

Detection and testing device for friction performance of joint bearing liner and mounting method of detection and testing device

The invention discloses a high-speed and fretting-friction testing apparatus for steel wire ropes. The high-speed and fretting-friction testing apparatus for the steel wire ropes comprises a first circular arc guide rail (6), a testing steel wire rope (9), a first steel wire rope tension sensor (10), a second steel wire rope tension sensor (15), a pressure sensor (16), a non-joint steel wire rope (17), a spring assembly (18), a second circular arc guide rail (19), a servo power-driven pushing rod (20), a transmission wheel support (21), a transmission axle (22), a sliding block (23), a guide rail (24), a transmission wheel (25), and a second boss (26); the testing apparatus can simulate the friction behavior among the steel wire ropes, so as to acquire the friction states of the steel wire rope under the conditions of different sliding speeds and fretting friction, including friction force, friction factors and friction temperature raising among the steel wire ropes, and the high-speed and fretting-friction testing apparatus can monitor the crack propagation change law in a friction process of the steel wire ropes and determine the frictional characteristic of the steel wire ropes in real time.

High-speed and fretting-friction testing apparatus for steel wire ropes

The invention discloses a friction hoist liner friction fatigue testing machine. The friction hoist liner friction fatigue testing machine comprises a speed reducer and a sliding rail which are arranged on a pedestal, wherein the input shaft of the speed reducer is connected with a speed-regulating motor; the output shaft of the speed reducer is provided with a driving wheel; a slide block is arranged on the sliding rail; a transmission wheel shaft is arranged on the slide block; a transmission wheel is arranged on the transmission wheel shaft; a connector-free steel wire rope is wound on the driving wheel and the transmission wheel; a servo electric push rod is arranged between the driving wheel and the transmission wheel; the servo electric push rod is connected with the slide block and a tension sensor; an upper test sample box module and a lower test sample box module are arranged on the two sides of the connector-free steel wire rope; a liner pair is arranged on the upper test sample box module and the lower test sample box module; a servo electric pressing rod is arranged above the upper test sample box module; a pressure sensor is arranged between the servo electric pressing rod and the upper test sample box module; steel wire rope tension sensors are arranged on the connector-free steel wire rope on the two sides of the liner pair respectively. The friction hoist liner friction fatigue testing machine can simulate the relative slip between the liners and the steel wire rope for measuring fatigue properties of the liners in real time in allusion to a frictional slipping condition of a friction hoist.

Friction hoist liner friction fatigue testing machine

The invention discloses an impact friction test system for a winding hoisting rope of a kilometer deep shaft. The system comprises a rack, wherein a roller is arranged at the left end of the rack; the roller is erected in a bearing seat on the rack through a roller center shaft; the roller center shaft is connected with a variable-speed motor through a torque rotational speed meter; a thrust oil cylinder is horizontally arranged at the right end of the rack and is arranged on the same height position as the roller center shaft; the thrust oil cylinder is connected with a friction wheel through a hinge pin; the centroid of the friction wheel is at the same height as the position of the thrust oil cylinder; the two sides of the friction wheel are fixed on a movable support; the movable support is erected on a guide rail of the rack; and the wire rope is wound on the roller by two circles in parallel and is wound on the friction wheel by one circle. The system can be used for simulating the working condition of impact friction of the winding hoisting rope of the kilometer deep shaft, so that the tribological property of the wire rope in the conditions of different rotational speeds, accelerations, impact speeds and specific contact pressures can be studied. The system disclosed by the invention has the advantages of simple and compact structure, simple method, relatively low cost and outstanding effect.

Impact friction test system for winding hoisting rope of kilometer deep shaft

Disclosed are a detection device and method for improving layer-to-layer transition of steel wire ropes. The detection device comprises a reel assembly, a steel wire rope tensioning assembly, a steel wire rope loading assembly and a lead screw sliding assembly. The reel assembly is used for winding steel wire ropes around a reel and can drive the reel to rotate. The reel assembly and the lead screw sliding assembly are installed on a bottom frame (1). The steel wire rope tensioning assembly is connected to the steel wire rope loading assembly via a threaded rod and a static torque sensor (28). The steel wire rope loading assembly is sleeved on vertical bare shaft guide rails (4) via a sliding block (9). The device can simulate friction and vibration activities between steel wire ropes at the multilayer winding layer-changing climbing stage of the steel wire ropes on a reel, and can measure the tensile forces of straight steel wire ropes and bent steel wire ropes, the twisting force of the straight steel wire ropes, and the friction forces and the vibration acceleration between wound steel wire ropes and the straight steel wire ropes and the bent steel wire ropes during layer-to-layer transition in real time.

Detection device and method for improving layer-to-layer transition of steel wire ropes

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