62 results about "Tendon stretching" patented technology

The invention relates to an intelligent tendon stretching bed. The bed comprises a controller and a tendon stretching bed, the controller is connected to the tendon stretching bed, the bed is characterized in that all the actions of the tendon stretching bed such as transverse and longitudinal split and shaking of legs, left and right lateral bending of the body, front and back bending of the bodyand lateral bending of the arms are controlled by the controller in a full-automatic intelligent manner, and a memory and share system for user parameters and achievement is arranged in a control system so as to ensure the safety of the user, and to improve the use interest of the user. The tendon stretching bed comprises a main frame, a trunk assembly, gear frame assemblies a leg power motor, aleg bracket, a trunk power motor and a motor bracket, the motor bracket is arranged at the lower side in the main frame, the trunk power motor and the leg power motor are arranged on the motor bracket, one or more gear frame assemblies are arranged on the trunk bracket and the leg bracket, and each gear frame assembly comprises a gear shifter assembly, so that the use of the motor is reduced, thecost is saved, the structure is simplified, and the weight is reduced. The machinery of the invention is novel in structure and easy to process and manufacture, innovatively applies the improved automobile gear shifter structure to an indoor article, ingeniously combines a plurality of mechanical structures such as spur gears, bevel gears and chain wheels, and saves resources and cost.

The invention provides a sports tendon stretching device comprising a bottom plate. A stand column is fixedly mounted at the top end of the bottom plate; racks are arranged on the two sides of the stand column; a gear box is mounted on the outer side of each rack; two climbing motors are mounted on one side of each gear box; an air cylinder is mounted above each gear box; the air cylinders are fixedly connected with the gear boxes; the output end of each air cylinder is abutted against the side face of each gear box. A mounting flange is mounted on one side, far away from each climbing motor,of each gear box; a sleeve is arranged on one side of the mounting flange; tension rings are inserted into the inner sides of the sleeves in a communicating mode, torsional springs are installed at the upper ends and the lower ends of the sleeves, one end of each torsional spring is fixedly connected with one sleeve and the other ends of the torsional springs are fixedly connected with the tensionrings. A top frame is arranged at the top end of the stand column, the middle of the top frame is connected through a bridge, and an open hole matching the cross section of the bridge is formed. A lead screw and a nut block are mounted on a hoisting plate, so that a user can conveniently swing left and right, and the comfort of the user is improved.

The invention relates to a tendon stretching device, in particular to a sports tendon stretching device. The sports tendon stretching device aims to achieve the technical purposes that the tendons canbe conveniently stretched and the efficiency of stretching the tendons can be improved. The sports tendon stretching device comprises a base, a rotating shaft, a bearing, a turntable, a cushion, a torsion spring, a first support plate, a second support plate, a blocking device, a first sliding rod, a first spring, a first sliding sleeve and the like. The bearing is embedded in the middle of the turntable, the rotating shaft is mounted in the bearing, the bottom of the rotating shaft is fixedly connected with the base for supporting, the top of the rotating shaft is fixedly provided with the cushion, the torsion spring is wound around the rotating shaft, and the top of the torsion spring is fixedly connected with the bottom of the cushion. According to the tendon stretching device, the legs of an athlete can be blocked by the blocking device, so that the situation is avoided that the legs of the athlete fall off from the first and second support plates during stretching of the tendonsand thus interference is brought to the athlete during stretching of the tendons; therefore, convenience is provided for the athlete to stretch the tendons, and thus the efficiency of stretching the tendons can be improved.

The invention discloses a test method for researching the influence of stress gradient on the creep property of concrete beam. The method comprises the following steps: firstly producing a concrete beam component comprising a single-direction axial-load component and a bending component, reserving a pore for a prestressed tendon on a plastic corrugated pipe the specification of which is greater than the diameter of a steel beam by one grade, and enabling the prestressed tendon to pass through the pore; placing the single-direction axial-load component on the smooth ground, supporting two ends of the bending component by adopting supporting articles, installing an anchoring steel plate on each of the prestressed tendons stretching out of two ends of the two components, and installing a pressure sensor between the anchoring steel plate on one end and the component; installing a dial indicator on the bending component, reading an initial value of the dial indicator, measuring the distance between stressed measuring points of the single-direction axial-load component and the bending component by holding the dial indicator, and obtaining the initial value of the distance between the dial indicator and the stress measuring point; additionally stretch-drawing the prestressed tendon if the numerical value of the pressure sensor is more than 2% less than the initial value of the tension force. The method has the beneficial effects that the method is simple, and the cost is low.