5012 results about "Steel rope" patented technology

The present invention provides a baby stroller folding device comprising an upper stroller frame, having a bendable handle installed at an upper end of the upper stroller frame; a lower stroller frame, with an upper end coupled to the upper stroller frame, and having a front wheel leg of a front wheel and a bendable step pipe disposed at the bottom of the lower stroller frame; a rear wheel leg, disposed separately on both sides of the upper and lower stroller frames, and having the rear wheel installed at the bottom of the rear wheel leg, a first slide member installed at the middle of the rear wheel leg, a pull rod installed between the first slide member and the upper and lower stroller frames, and a latch rod disposed at an upper end of the rear wheel leg; a folding joint, installed separately between the upper and lower stroller frames and the rear wheel leg, for coupling and positioning the upper and lower stroller frames, and the rear wheel leg having internal and external gear discs with a notch each and selectively latched and detached with respect to the latch rod; and a link mechanism, installed between the two rear wheel legs, and having a plurality of pipe frames, slide members, link rods and a start element, and the start element being coupled to the latch rod by a steel rope, such that the baby stroller folding device can fold the baby stroller in longitudinal and transversal directions at the same time smoothly by a simple operation.

The invention relates to steel rope grease with high dropping point and a preparation method of the steel rope grease. The steel rope grease with high dropping point comprises the following compositions in percentage by weight: 65%-85% of base oil, 5%-20% of thickening agent, 2%-15% of adhesion agent, 1%-6% of rust inhibitor, 0-5% of antioxidant, 0-5% of polar additive and 0.5%-6% of solid lubricant. According to the steel rope grease, the dropping point of the steel rope grease is high (no less than 100 DEG C), the adhesion property is good (a slump test is qualified), the low temperature performance is good, superior adhesion property and oil film forming capacity are realized, and comprehensive performances such as waterproofing, corrosion resistance, oxidation resistance and wear resistance are also realized; and high-quality steel rope grease products required by the imported steel rope products can be partially replaced by the steel rope grease, so that the production cost is reduced for enterprises, the lubrication and corrosion resistant problems of the steel rope can be relieved, and the service life of the steel rope can be greatly prolonged.

A shock absorbing tool for use in pipelines and oil wells, particularly in combination with perforation guns comprises a central mass supported on two springs between the end terminal members. The shock wave is absorbed in the free oscillation of the mass. The mass is constituted by a piston assembly. A steel rope permits the shock absorbing tool to be maneuvered within the bore hole without damage to the springs.

The wire rope detection method based on 3D leakage magnetic field comprises: acquiring the defect sample magnetic leakage signal by Hall sensor array; eliminating trough by an adaptive space trapping filter; taking normalization and K-L transformation to extract feature and train NN, and detecting the real defect by the network. The corresponding detection device comprises: a sensor probe included a permanent magnet excitation part and an analog switch and a photoelectric encoder, a data acquirement processor, and a computer. This invention can provide full defect signal and improve detection precision.

An automatic balance regulating system and method of a hanging scaffold for vertical shaft construction is particularly suitable for a winch control system under control of PLC (programmable logic controller) and with variable frequency and regulable speed. The automatic balance regulating system comprises tension sensors arranged on suspension steel wire ropes, an attitude angle sensor installed on the hanging scaffold, a signal acquisition card and a PLC controller which is arranged in a winder chamber; PLC controller acquires signal of attitude angle of the hanging scaffold and signal of the tension of the steel ropes in real time through the attitude angle sensor and the tension sensors respectively, calculates length difference between the length of each of the four steel ropes and the average length thereof, as well as tension difference between the tension of each of the four steel ropes and the average tension thereof, then calculates regulating variables of rotating speed of four winches according to principle that length of each of the four steel ropes is closer to the average length at the same time, and tension of each of the four steel ropes is closer to the average tension at the same time, and furthermore drives the winches to regulate. According to the invention, the automatic balance regulating system can automatically regulate the hanging scaffold from an inclined pose to a horizontal state, and the distribution of tension of steel ropes from a non-uniform state to a balanced state.

The invention relates to a load follow-up loading system for plane flap reliability tests. The system comprises a bearing wall. The system is characterized by further comprising a support component, a load loading adjusting unit and a load detection and adjusting unit, wherein a flap is mounted on a wing; the root of the wing is mounted on the bearing wall; the support component comprises two vertical columns and a transverse beam for supporting the load loading adjusting unit and the load detection and adjusting unit; the load loading unit comprises a moment motor and a steel rope; the moment motor is arranged on the support component and is used for exerting an action force on the flap; the steel rope is connected with the moment motor; the load detection and adjusting unit comprises an angle sensor, a sliding track component and a pulley component. A plurality of loading points are arranged on the surface of the flap, one loading point corresponds to one set of loading system, the size, the direction and an equivalent action point of real-time flap surface aerodynamic force can be simulated.

A power transmission mechanism and a robot arm using the same are described. The power transmission mechanism at least includes a first power source, a second power source, a plurality of steel ropes, a support arm component, a stopping component and a joint component. The stopping component is disposed in the support arm component and includes a first stopping unit and a second stopping unit that rotate coaxially. The first and second power sources and the joint component are disposed at two ends of the support arm component. The first and second power sources transmit power via the first stopping unit and the second stopping unit through the plurality of steel ropes to drive the joint component to perform a two-degree-of-freedom motion. The support arm component and the joint component can be applied in an upper arm and an elbow of a robot arm, thereby constituting a multi-degree-of-freedom robot arm.

The invention discloses a fabricated architectural decoration stone artificial board curtain wall mounting frame and relates to the technical field of curtain wall mounting. The problems that in the prior art, the overall weight of a mounting frame is difficult to support by a guide rail attached to a wall, a large quantity of areas around the roof surface are occupied, consequently the strength is low, stability is poor, and curtain wall mounting is inconvenient are solved. The fabricated architectural decoration stone artificial board curtain wall mounting frame is characterized in that thefabricated architectural decoration stone artificial board curtain wall mounting frame comprises a base, a hoisting support facing the outer side of a roof is arranged on the base, and a winch is mounted on one side of the hoisting support; the winch is connected with a hanging basket through a steel rope which is arranged along the hoisting support in a penetrating mode, and the hoisting supportcomprises two spaced supporting rods which are longitudinally arranged on the base, and two spaced cantilevers which are transversely arranged on the base; the distance between the supporting rods isequal to the distance between the cantilevers and equal to the length of the hanging basket, and fixed pulleys are arranged at the ends, away from the base, of the supporting rods as well as the ends,away from the supporting rods, of the cantilevers correspondingly; and the ends, close to the fixed pulleys, of the cantilevers are provided with roof surface steel trusses. The fabricated architectural decoration stone artificial board curtain wall mounting frame has the advantages that the strength is high, the stability is good, and curtain wall mounting is convenient.

The invention discloses a small three-dimensional garage comprising a garage support, a lifting carrier, a carrying mechanism and suspended parking places. The garage support comprises columns, beams and diagonal bars. The columns and the beams form the frame-shaped garage support. The bottom of the garage support is a car entry storey. The suspended parking places are arranged on the outer side of the garage support. The lifting carrier is arranged inside the garage support. The carrying mechanism can be carried by the lifting carrier and is used for loading cars and traversing between the lifting carrier and the suspended parking places. The cars can be carried between the car entry storey and the suspended parking places vertically through the carrying mechanism driven by the lifting carrier. Vertical lifting of the lifting carrier can be realized through one of steel ropes, chains, or screw and nut mechanisms. The carrying mechanism is one of a car loading plate, a comb tooth exchanging mechanism or a clamping tire mechanism. The small three-dimensional garage compared with a traditional three-dimensional garage has the advantages that occupied space is small, car storing and taking actions are reduced, and the small three-dimensional garage is convenient and rapid to use and high in safety.

This is a method used to produce long span spread chord truss. It contains: To weld the belly rod on the upper spread chord rod, put the formed upper chord rod on the wording platform, fix the two ends of this chord rod on the fixed seat, then connect lower end of the belly rod with cover joint pipe, and between two cover pipes beforehand put a lower chord steel pipe. The steel rope pierce through every joint cover pipe and every lower chord steel pipe, then to spread out the steel rope, on the steel rope at the spreading straight, state weld every lower steel pipe with every joint cover pipe, keep the steel rope spread out straightly, then loose the two ends of the upper chord rod from platform, then long span spread chord truss is finished.

The invention provides a production method of a high-strength steel rope. The production method of the high-strength steel rope is characterized that low carbon is selected and used as raw materials of the steel rope, and the production technology comprises a first step of surface processing, wherein wire materials are placed on a pay-off rack, the diameter of the wire materials is 5.5mm, hot-rolled oxide-scale is eliminated through mechanical dephophorization equipment, high-power ultrasonic cleaning is conducted on the wire materials, the wire materials enter phosphating equipment, phosphating is conducted on the wire materials, the wire materials enter drying equipment and are dried finally, and preprocessed wire materials are obtained; a second step of drawing, wherein the preprocessed wire materials obtained from the first step are placed on a drawing machine, multi-pass drawing is conducted on the preprocessed wire materials, semi-finished wire materials are obtained, and winding up is conducted through a spool; a third step of water bath heat treatment and galvanization, wherein the semi-finished wire materials obtained in the second step are placed on the pay-off rack, the semi-finished wire materials are heated in a four-section form heat treatment furnace, quenching, drying, galvanization and cooling are conducted on the semi-finished wire materials, semi-finished wire materials are obtained, and winding up is conducted; a fourth step of wet type drawing, wherein the semi-finished wire materials obtained in the third step are placed on the drawing machine, multi-pass drawing is conducted on the semi-finished wire materials, the compression angle of a wire-drawing die of each pass is 13-14 degrees, dedicated lubricating agent is used as lubricating agent, the concentration of the dedicated lubricating agent is 2%-3%, finished wire materials are obtained, and winding up is conducted through a spool; a fifth step of stranding and rope forming, wherein the finished wire materials are placed on a stranding machine, stranding and laying-up are conducted, and the finished steel stranded rope is obtained.

The invention relates to a folding wings pneumatic loading unfolding experiment device consisting of two force-augmentation devices, a servo arm swing mechanism and a rack. The force-augmentation device comprises a gas source, a pressure-reducing valve, a cylinder, a force sensor and a digital dynamometer, wherein the gas source transmits gas to the cylinder through pressure adjustment of the pressure-reducing valve, the force sensor and the digital dynamometer can accurately measure augmented force. The servo arm swing mechanism includes a thrust bearing support, and two radial bearings positioned rotating shafts and rotating arms on up and down portions. One end of a steel cable is connected to ring-pull screws of a sensor, and the other end of the steel cable winding on a front roller seat, a back roller seat and a roller on a tumbler is connected to force-bearing points of the folding wings. The folding wings pneumatic loading unfolding experiment device has a simple structure, a big adjustment range for the augmented force, a convenient and easy operation method, and high test efficiency. In the unfolding process of the folding wings, the servo arm swing mechanism can rotate around the folding wings to ensure the augmented force to always be perpendicular to the folding wings, which is particularly suitable for small and medium sized folding wings loading unfolding experiments.

The present invention relates to a rope winding system (1) for winding and unwinding a steel rope (4) of a crane (7). A rope winding system (1) according to the present invention has a rope drum (6), onto which the steel rope (4) can be wound in a plurality of layers, and a magnetic system (7) which is configured to generate a magnetic field over a section of the steel rope (4) with its magnetic flux being deflected by a movement of the steel rope (4) in such a way that the steel rope (4) is braked. A crane (7) is also discloses which is equipped with such a rope winding system (1) for winding and unwinding a steel rope (4).

The invention discloses a hydraulic high-speed drill. The front end of the body of an excavator is hinged with the lower end of a drillrig seat through a movable arm; the drillrig seat is fixed in the middle part of the drillrig; a power head is arranged on the drillrig through a skateboard; the output shaft of the power head is connected with the upper end of a drill stem through a coupler; the lower end of the drill stem penetrates a movable locating frame and a fixed locating frame in sequence; the upper end of the drill stem is provided with a first fixed pulley; the lower end of the drillrig is provided with a second fixed pulley; the lower part of the drillrig is provided with a towing jack; two movable pulleys which are arranged up and down are arranged on a piston rod of the towing jack through a bracket; two chains and two steel ropes are arranged between the fixed pulleys and the movable pulleys; the power head and the drillrig can be pulled to move up and down through the fit between the chains and the pulleys, while the movable locating frame can be pulled to move up and down through the fit between the steel ropes and the pulleys. The hydraulic high-speed drill has the advantages of simple and compact structure, low cost, easy operation, convenient maintenance, flexible and reliable motion, low working intensity of the workers, high working efficiency and broad applicable range.

The invention discloses a distribution line typhoon-preventing integrated device capable of achieving pole and wire protecting and achieving pole protecting, wire abandoning, energy absorbing and disengaging. The distribution line typhoon-preventing integrated device structurally comprises a notched elastic frame clamp (1). A clamping end of a clamping sliding block (6) is formed through a downward notch. The upper end of the clamp (1) is connected to a pole and tower cross arm end (3) of a distribution line through a spherical hinge (2), two chucks of the clamping end are respectively and fixedly provided with a long groove type plate (4), the upper ends of the two long groove type plates (4) incline towards the two sides while the lower ends of the two long groove type plates (4) incline towards the middle, a wide-end-up groove with a certain dip angle is formed by combining the two chucks, the middle of the top end in the frame clamp is provided with a tension spring (5), the tension spring (5) is connected with the clamping sliding block (6), connected with a rewinding spring (7) through a steel rope and downwards connected with an insulator / armor clamp (8) of the distribution line, and the insulator / armor clamp (8) is connected with a wire (9) of the distribution line. According to the integrated device, a pole and the wire can be protected when wind is weak, and when the line cannot resist the attack of violent typhoon, the pole can be protected, the wire can be abandoned, energy is saved for enabling the wire to disengage from the pole, the line and the line pole can be effectively prevented from broken, and the tower can be effectively prevented from falling down.

The invention discloses a method for cultivating pitaya. The method comprises the following steps: a planting ditch is dug; decayed farm manure and soil are mixed at a mass ratio of 1:2 is backfilled in the planting ditch; cement pillars are set up in the center of the planting ditch and at an interval of 2 m, a position of 70 cm above the ground and a position of 140cm above the ground on each cement pillar are perforated and penetrated by two cross beams, the cross beams are as long as 70 cm, and horizontal steel ropes are fixed between the cross beams between each two cement pillars; and 4 pitaya stalks are cut on furrow surface among the cement pillars, two left primary branches are drawn onto two steel ropes on the first layer through pull ropes, three left secondary branches are separately bound to steel ropes on the second layer, five tertiary branches are kept, and the other new branches are cut and removed. The method provided by the utility model has the advantages that orchard space is fully utilized; the absorption of water, fertilizer and light by the whole orchard is increased; the weight of a single fruit is improved; and after three years, the average yield can reach 1999.5 kg per mu, increasing by 44% over a conventional yield.

The invention relates to a repeatable locking device for a magnetically suspended flywheel, which comprises a flywheel system, a driving mechanism and a locking mechanism, wherein the locking mechanism is arranged outside a flywheel rotor and is fixed to a flywheel base through a fastening bolt. The flywheel system mainly comprises a flywheel stator shaft, a flywheel rotor and a base; the driving mechanism mainly comprises a fixed plate, a left bearing pressure ring, an upper bearing pressure ring, a motor, a worm, a coupling joint, a worm wheel, a fixed pole, a locking fork, a spherical nut, a worm wheel link rod and a bearing; and the locking mechanism mainly comprises a spring chip seat, a spring chip, a spring chip body, a small pole, a steel rope and a connecting pole. The locking device protects a magnetically suspended flywheel system, and has the advantages of repeatable use, high reliability, simple structure and the like.

The invention discloses an assembling method of elevator, which comprises the following steps: assembling necessary part of wagon with tractive machine, steel rope, wagon rail and wagon rack; constructing a lifting platform based on wagon rack to assemble other parts of elevator. The invention also provides lifting system of elevator, which comprises the following parts: tractive device, counter rack and wagon rack, wherein the protective fence is set around wagon rack with protective top board on the top of protective fence; the longitude protective cylinder is set between protective top board and wagon rack; the tractive steel rope pierces the protective cylinder and wagon rack with controlling disc on the wagon rack to control the lift of elevator.

A moving length adjustment device of a treading trainer comprises a treading trainer having two treadles; each treadle indirectly connected to a rotary shaft; the rotary shaft connected to a linkage plate; each linkage plate being formed with a via hole; each linkage plate being indirectly connected to a stand rod; the stand rod being formed with a transversal screw hole; and a T shape linkage having a pin shaft at a front end thereof; each of two lateral sides of the T shape linkage having a respective universal adaptor. Further, the T shape linkage can be replaced by a retaining frame, a guide wheel and a steel rope winding around the guide wheel; and a front end of the steel rope having a pin shaft.

The invention relates to a tempering damper system used for improving wind resistance stability of a transmission tower based on a single pendulum model. The damper system is composed of a spheroid mass block, a bracket, oil pressure type dissipation energy dampers, an oil pressure type anticollision damper, steel ropes and a buffering steel ring and the like, wherein the spheroid mass block is composed of a roundness steel disc; four groups of steel ropes support the lower half part of the spheroid mass block through the bracket and four groups of oil pressure type dissipation energy dampers are arranged around the bracket to achieve the purpose of energy consumption and vibration attenuation; in addition, when the swing amplitude of the spheroid mass block is oversize, and a tubular steel bar arranged below the bracket can collide the buffering steel ring so as to slow down the motion of the buffering steel ring; and the performance of the tempering damper system mainly depends on the size of rotational inertia, if the rotational inertia ratio of the tempering damper system to a controlled system is larger, the control effect is better. The tempering damper system is suitable for transmission towers of different tower types, is easy to install, and can obviously improve the wind resistance stability property of the transmission tower.

The invention relates to a structural design optimization method for a deepwater catenary mooring rope. The method aims at an 'anchor chain-steel rope-anchor chain' three-section combined deepwater catenary mooring rope, structural parameters of length of each section of the rope, top pretension, mooring horizontal radiation distance and the like are determined through iterative computation by giving consideration to specific requirements of design specifications on various indicators under the condition of given rope specifications, operating water depth and allowable limit horizontal offset of a floating body, and accordingly horizontal restoration characteristics of the rope reaches optimum under the condition of controlling total steel consumption and mooring load, and then structure types and stress situations of the rope under different states are computed to bring convenience to type selection of mooring equipment. Compared with existing commercial software such as mooring analysis software MOSES and SESAM, the method has the advantages of oriented design, high practicality, high convergence speed and the like, achieves optimal selection of various design parameters and can be used for preliminary scheme design and performance evaluation of deepwater floating type platform catenary mooring systems.

The invention discloses a twisted-type hoister steel wire rope interlayer friction detection device and method. The twisted-type hoister steel wire rope interlayer friction detection device comprises a support, and a loading steel wire rope positioning system, a connector-free steel wire rope positioning system, a brake system, a power loading system and a state monitoring system which are arranged on the support; a test for the friction abrasion between a loading steel wire rope and a connector-free steel wire rope on a rotating hub can be realized, and the device can be used for disclosing a steel wire rope friction abrasion fracture mechanism and evaluating the abrasion damage evolution of each steel wire rope and the fatigue service life of each steel wire ropes. A steel rope interlayer friction state on a twisted-type hoister roller can be simulated, a stable steel wire rope contact load can be continuously applied by adopting a fixed pulley positioning device and an electric pull rod loading way controlled by computer software, friction force, a temperature field and a friction coefficient among the steel wire ropes and an expanding law of internal cracks of the steel wire rope can be monitored in real time, and an effective experimental device can be provided for disclosing the steel wire rope friction abrasion fracture mechanism, evaluating the friction damage evolution of each steel wire rope and evaluating the fatigue service life of each steel wire rope.

The invention discloses a translational elevating vehicle loading platform for translational elevating three-dimensional parking equipment. The platform comprises a translational vehicle loading frame and a translational driving device, wherein the translational vehicle loading frame is supported on a translational track through a translational roller on the translational vehicle loading frame; the translational track is fixed to a beam; the beam is fixed to an upright post; the translational driving device drives the translational vehicle loading frame to move along the translational track; an elevating vehicle loading frame is arranged below the translational vehicle loading frame; the upper end of a steel rope for lifting the elevating vehicle loading frame is wound on a steel rope winding drum; the steel rope winding drum is movably supported on the translational vehicle loading frame; the translational vehicle loading frame is also provided with an elevating driving device for driving the steel rope winding drum to rotate; and the elevating vehicle loading frame can also be provided with a turn-round bedplate and a rotary driving device of the turn-round bedplate. The platform has the advantages of performing time management to reduce the access time of the translational elevating three-dimensional parking equipment by more than 50 percent and performing turn-around in an idle state by using an air parking area without adding additional ground turn-around area.

The invention relates to a multifunctional vegetable-field rail car system comprising a compartment (10), a pole (20) and a working arm (30). The pole (20) is fixed at the tail of the compartment (10). The middle point of the working arm (30) is fastened on the pole (20) through a fastening block (304). Steel ropes (202) are obliquely pulled between two sides of the top of the pole (20) and two ends of the working arm (30) respectively. Spraying heads (301) are evenly distributed on the bottom surface of the working arm (30). A mini tiller (302) is suspended at the bottom of the working arm (30). A row of sowing wheels (303) is connected to the top of the working arm (30). Four wheels (101) and four rail changing wheels (101a) are connected to the bottom of the compartment (10). The wheels (101) are erected on guide rails (401) of a vegetable field (40). The multifunctional vegetable-field rail car system is comprehensive in function and convenient to use, integrated work of mechanical ploughing, sowing, pesticide spraying, irrigating, transporting and the like in the vegetable field is realized, labor is saved, and vegetable production efficiency is improved.

The invention discloses a tower crane hoisting and speed control system which comprises a PLC (Programmable Logic Controller); the PLC is respectively connected with an operation handle, a frequency converter and a hoisting sensor simultaneously; the frequency converter is connected with a motor and a speed measurement encoder to form a closed loop; the motor is connected with a winding drum through a reduction gearbox; and the hoisting sensor is used for detecting the hoisting weight through detecting the tensile force of a steel rope. The invention also discloses a tower crane hoisting and speed regulation control method; the PLC is adopted for controlling the speed regulation of the frequency converter to realize the gear separation and stepless speed regulation combination; during the working process, the PLC obtains a handle signal and a hoisting signal in real time and also obtains the current of the motor through a 485 bus; and a hoisting speed control mode is determined according to the state of the system. The device and the method have the beneficial effects that the practical running speed of the tower crane is regulated under the maximum speed limit of all gears, the unpredictability of a driver for speed is avoided, the PLC is adopted for realizing the closed-loop control of the current, and the speed stability is ensured.

The invention provides an installation equipment of an above-water wind generator and a construction method thereof, belonging to the technical field of above-water wind power generation, comprising a hoisting ship, a transportation barge, a hoisting machine, a hoisting ring, a telescopic floating cylinder, an inflation device, a supporting leg and a lifting device, wherein four supporting legs are fixedly arranged below the hoisting ship; the circumference of the hoisting ship is fixedly provided with a plurality of telescopic floating cylinders; the hoisting machine is fixedly arranged vertically right at the center of the upper deck of the hoisting ship; 2-10 hoisting rings are symmetrically and fixedly arranged at two sides of the hoisting machines on the upper deck of the hoisting ship respectively; the hoisting rings are connected with the back rods of the hoisting machine by wire ropes; and the circumference of the transportation barge is provided with the telescopic floating cylinders and the inflation device. The installation equipment can carry out the installation operation of the marine wind power generation towel pile foundations and fans within 0.3-5m of water depth, greatly improve the installation efficiency of the marine wind power generation towers and reduce the construction cost of the marine wind power generation fields.

The invention provides a nondestructive flaw detector for steel wire ropes, and solves the problem that quantitative detection of wire break and wear in steel wire ropes cannot be realized by the prior art. The nondestructive flaw detector for steel wire ropes comprises a steel wire rope walking positioning mechanism, a magnetic leakage flux detector, an optical detector, a photoelectric encoder, and an embedded signal processing system. The steel wire rope walking positioning mechanism is provided with a steel wire rope channel, the inner wall surface of which is fixed with the magnetic leakage flux detector, the optical detector and the photoelectric encoder. The embedded signal processing system is fixed on the steel wire rope walking positioning mechanism, and the magnetic leakage flux detector, the optical detector and the photoelectric encoder are connected to the embedded signal processing system. By combining a magnetic leakage flux technology and an optical determination technology to perform signal feature extraction and quantitative analysis on wire break, pitting corrosion, wear and other defects of steel wire ropes, the nondestructive flaw detector realizes online high speed and high accuracy detection of the steel wire ropes.

The invention discloses a marine drilling riser tensioning system which comprises a plurality of tensioner assemblies respectively arranged around a floating type drilling platform, wherein each tensioner assembly comprises a tensioning cylinder and an energy storage device, wherein the upper end and the lower end of the tensioning cylinder are respectively provided with an upper tackle block and a lower tackle block, the distance between the upper tackle block and the lower tackle block is changed with the flexibility of a piston; a lower cavity of the energy storage device is filled with a high-pressure liquid, an upper cavity of the energy storage device is filled with a high-pressure gas, the lower cavity of the energy storage device is communicated with a piston cavity of the tensioning cylinder, the upper cavity of the energy storage device is communicated with a high-pressure air system; and a steel rope sequentially bypasses through the upper tackle block and the lower tackle block and is connected with a connection device after guided by a guide pulley, and the connection device is connected with a tensioning ring hung on a riser system. The marine drilling riser tensioning system has the advantages of simple structure, convenience for control, reliability in control, low manufacture cost and large bearing capacity.

The invention relates to a hip joint testing machine based on steel rope drive, which integrates machine, electricity and liquid technologies into a whole, is suitable for accurately and reliably testing the biotribology characteristic parameters of joint prosthesis materials and provides guiding test data for medical clinical application. The hip joint testing machine mainly comprises a support part, a mechanical drive part, a hydraulic loading system and a temperature control part, wherein the mechanical drive part comprises a telescopic and stretching spring, a cam, a fixed pulley and a steel rope, wherein the steel rope is connected with a moving platform, a joint ball head and a spherical base of a thrust bearing are connected with and fixed to the moving platform, and the steel rope drives the moving platform and the joint ball head to complete crossed multidirectional compound sliding and rotary motion under the combined action of the cam; the hydraulic loading system is guided by a loading oil cylinder fixed on a top plate to drive a acetabulum to apply loads to the joint ball head; and the top plate of the hip joint testing machine is provided with a temperature controller. The invention has the advantages of simple structure and low cost, is convenient to operate and can simulate the actual motion conditions of the hip joints of human bodies.