18 results about "Pull force" patented technology

The invention discloses a thoracolumbar spine and cervical vertebra physiotherapy integrated machine. The thoracolumbar spine and cervical vertebra physiotherapy integrated machine comprises a treatment table board, a steering arm, a control tower and a pulley lifting device, wherein the treatment table board comprises a head-side half table board part and a foot-side half table board part, and at least one of the head-side half table board part and a foot-side half table board part is matched with a support slide rail in a sliding manner; the support slide rail is mounted on a lifting support in a pivoting manner around a horizontal axis and/or a vertical axis; the head-side half table board part is provided with a headrest module; the steering arm is pivotally mounted in the middle position, along the width direction, of one end of the support slide rail, and is provided with a patient table board positioning belt locking device and at least two pulleys, and the positions of the patient table board positioning belt locking device and the at least two pulleys are adjustable in position along the longitudinal direction of the steering arm; the control tower is communicated with a computer control device performing physiotherapy according to a treatment curve, is internally provided with a drive device which generates pull force according to the treatment curve information sent by the control device; and the pulley lifting device changes the direction of the pull force generated by the drive device and than acts the pull force on the spine of a patient. The thoracolumbar spine and cervical vertebra physiotherapy integrated machine has two purposes, and thus the financial burden of the patient is alleviated.

The invention discloses an inserting pin component of an optical cable connector and a tensile connecting structure of the inserting pin component and the optical cable. A conical surface with gradually reduced external diameter is arranged on the outer surface of the tail part of a rear sleeve of an inserting pin component; a conical sleeve of which an inner ring is in a conical surface closed structure is correspondingly sleeved on the conical surface; a screw nut is movably assembled on an outer ring of the conical sleeve; an axial meshed structure is arranged on the combining surface between the inner ring of the screw nut and the outer ring of the conical sleeve; screwing match structures are arranged on the inner wall at the front end of the screw nut and the outer wall of the rear sleeve; an aramid fiber exposed from the cutting position of the outer skin of the optical cable is clamped between the outer surface of the conical surface of the tail part of the rear sleeve and the inner ring of the conical sleeve; the aramid fiber, the conical sleeve and the rear sleeve are fixed into a whole by the function of screwing locked force between the screw nut and the rear sleeve; when the optical cable is pulled by external force, the pulling force is exerted on the conical sleeve and the rear sleeve by the aramid fiber, and a center optical fiber can not be pulled; when a flange or the rear sleeve of the inserting pin component is pulled, the whole optical fiber can be pulled to move by the aramid fiber, thereby being free from the damage of the center optical fiber by pulling and leading the installation of the inserting pin component to be more convenient.

The invention relates to a system conversion method of first cable later beam construction of a self-anchored suspension bridge. The method includes: building the edge beams and bridge towers of the self-anchored suspension bridge, mounting temporary bridge tower anchoring devices, setting up a main cable to form the main beam sections of a main beam, and determining the position of a final closure; evenly arranging a plurality of bridge tower jacks in each temporary bridge tower anchoring device, and evenly arranged a plurality of closure jacks at the final closure starting the closure jacks and the bridge tower jacks, and controlling the actual total jacking force of the closure jacks and the bridge tower jacks to be equal to the horizontal pull force of the main cable to the edge beams; using a hierarchical symmetrical unloading manner to regulate the gap distance of the closure, and locking the closure jacks and the bridge tower jacks until the gap distance satisfies the welding requirement so as to complete the system conversion of the first cable later beam construction of the self-anchored suspension bridge. The method has the advantages that the temporary bridge tower anchoring devices can be demounted safely, stable conversion of the horizontal force from the temporary bridge tower anchoring devices to the closure gap regulating device can be achieved, and closure gap regulation can be performed smoothly.

The invention discloses a gravity-type adjustable rolling too, which is formed by a gravity reversing mechanism, a gravity drawing mechanism and a roller-type rolling head or ball-type rolling head, wherein the gravity reversing mechanism realizes the goal of reversing through three fixed pulleys and matched drawing ropes; the gravity drawing mechanism generates constant pulling force through the suspended weight and converts the pulling force of the weight into rolling force to a workpiece through the gravity reversing mechanism; and the roller-type rolling head or ball-type rolling head is fixedly connected on a rolling shaft in the gravity drawing mechanism and directly rolls the workpiece. By adopting the three mechanisms, the rolling tool can ensure the rolling force to be constant when the surface of the workpiece fluctuates slightly or severely, and the rolling force can be conveniently and rapidly varied through varying the mass of the suspended weight. The rolling tool has the advantages of simple structure, convenient manufacturing and low cost and can be directly used on common lathes.

The invention discloses a device capable of preparing coconut juice directly in a coconut shell, a coconut juice machine using the device and a coconut juice machine use method. The device capable of preparing coconut juice comprises a spring part, a connecting pipe and a cutting unit; the lower end of the spring part is connected with the upper end of the connecting pipe of which the lower end is hinged with the cutting unit; a spring is arranged in the spring part; the connecting pipe is a hollow pipe; the cutting unit comprises a cutting ball; one end of a traction line is connected with the spring in the spring part; the other end of the traction line penetrates through the connecting pipe and is connected with the cutting ball. The cutting ball is in dynamic balance by a centrifugal force, a pull force of the spring and a counter-acting force of the coconut shell, an action of flexibly scraping a coconut cavity is achieved, the coconut juice can be directly machined in the coconut cavity without breaking the coconut shell, the structure is novel, clean and sanitary, the device has no special requirements on the shape and size of the coconut, the technical problems that the existing machine is difficult for streamline processing, and that the coconut shell must be artificially broken for extracting; labor is saved and the cost is reduced.

The invention belongs to the field of oil field oil extraction equipment and particularly relates to a tubing anchor. The tubing anchor comprises a tubing anchor body and also comprises a pressure-limiting tripping mechanism, wherein the pressure-limiting tripping mechanism structurally comprises a sliding pipe, a conical sleeve, a one-way stop sleeve, a disc spring, an outer cylinder, a plug anda lower joint, the outer side of the sliding pipe is provided with a sliding way and a rack, the rack is provided with one-way stop teeth, the disc spring and the one-way stop sleeve are arranged in an annular space between the sliding pipe and the outer cylinder, the upper end and the lower end of the disc spring respectively abut against the outer cylinder and the one-way stop sleeve, the one-way stop sleeve is kept moving away from the conical sleeve under the effect of the disc spring, and the upper end of the one-way stop sleeve is provided with a spring claw. When thermal recovery is stopped, a tubing column is shortened, an axial pull force borne by a tubing and the tubing anchor body is limited in a certain range, so that the pull force produced after tubing column condensation does not affect the set-packing stability of the tubing anchor body and also does not cause challenge of the tensile strength of oil pipes.

The invention discloses a process and a device for producing a thin prepreg. The process comprises the impregnation process; and before the impregnation process, a reinforcing material is arranged on a carrier so that the carrier directly acts on a roll shaft to share the acting force applied by the roll shaft on the reinforcing material. By arranging the reinforcing material on the carrier before the impregnation, the roll shaft can be prevented from being directly contacted with the reinforcing material, the pulling force directly applied from a device to the reinforcing material is effectively reduced, the condition that the reinforcing material is partially stressed unevenly is reduced, the thin reinforcing material is protected particularly, such phenomena as dislocation, shape change and tearing of the thin reinforcing material and the ultrathin prepreg are reduced, and the production efficiency and product percent of pass are improved.

The invention discloses a method for measuring radial expansion force during running of a cable middle joint. The method comprises an open loop and a mechanical sensor, wherein the middle cable jointis wound with the open loop; the mechanical sensor is connected in series to a loop opening; the open loop with which the cable middle joint is wound is used for carrying expansion force during radialexpansion of the joint, transforming the radial expansion force into circumferential tensile force by means of the own non-deformable or micro-deformation property, and transmitting the radial expansion force to the mechanical sensor; and the mechanical sensor which is connected in series to the loop opening is used for collecting the circumferential tensile force transmitted from the loop, and has a force value display function and a threshold exceeding alarm function. The method is reasonable in design. Through adoption of the method, the running state of the cable middle joint can be got immediately; unnecessary overhauling test and cable joint explosion accidents are reduced; and the power supply reliability is improved.

The invention provides a pulling force test clamp, in particular to a wire harness pulling force test clamp. The pulling force test clamp comprises a clamp main body, a pulling rod as well as left force arms, right force arms, a fixing head, a return spring, fixing screws, a left clamp plate and a right clamp plate, wherein the fixing head is arranged at the top of the clamp, and is screwed with a punch pin; the return spring is arranged between the pulling rod and the clamp main body; the fixing screws are arranged to fix the left force arms and the right force arms; the left clamp plate and the right clamp plate are arranged on the left force arms and the right force arms. According to the invention, tooth threads are adopted on the clamping plates of the clamp to occlude; the pulling rod adopts a reversed technology to occlude the wire harness and the clamping plates together; the clamp plates clamp the wire harness tighter when the pulling force testing machine pulls higher; pulling force testing accuracy is improved greatly; meanwhile, the pulling rod is adopted to drive the force arms, so as to greatly relieve labor intensity of operating personnel, and improve production efficiency.

The purpose of the present invention is to provide a multi-functional clamp. The problem needing to be resolved is that the background technology cannot be flexibly applied and cannot achieve multiple functions, basically only having one function. The technical scheme adopted to resolve the technical problem is as follows: the multi-functional clamp is provided with the main body of a clamping head, a left clamping block and a right clamping block, and through a synchronizing pin, the two clamping blocks can synchronously move; the two clamping blocks can slide downwards from the upper part of the main body of the clamping head, and the synchronizing pin can slide in a positioning groove on the main body of the clamping head, so that the clamping blocks cannot be deviated; the lower end of the positioning groove is provided with a positioning screw to ensure that the synchronizing pin cannot slide out; pulled by pull springs, the sliding clamping blocks can automatically return to the upper part of the main body of the clamping head in order to strain an object such as a rope and a wire; the pull springs are positioned and fixed on the back of the clamping head by pull springs and fixed by a pull spring-pressing sheet, a pull spring-protecting cover protects the pull springs, and a certain stretching space is arranged for the pull springs; the pull spring-pressing sheet and the pull spring-protecting cover are fixed on the main body of the clamping head by screws; the lower end of the main body of the clamping head is provided with a connecting screw and a snap spring, which can be connected with various rope-tightening devices and other binding devices. By adopting the technical scheme, the multi-functional clamp does not need to be operated by multiple persons, so operation is simple and convenient, and moreover, the multi-functional clamp, which is applicable to various ropes, wires, etc.

The invention discloses an ADSS optical cable and iron tower connecting device, which aims to solve a defect that the stability of an iron tower is affected due to a great horizontal pulling force imposed on the iron tower by an ADSS optical cable when being installed on the iron tower. The ADSS optical cable and iron tower connecting device comprises a connecting rod, two adjusting rods with thelength being adjustable which are respectively connected at two ends of the connecting rod and pulling rings connected on the adjusting rods respectively, wherein the two pulling rings are respectively connected to supporting rings used for being installed on the iron tower, the pulling rings are movably hooked on the supporting rings respectively, each pulling ring is connected with a pre-twistedwire in a tightened manner, each pre-twisted wire is connected with an ADSS optical cable, and the two pre-twisted wire tightens the connecting rod. The ADSS optical cable is installed on the iron tower through a force unloading device, thereby greatly reducing the horizontal pulling force for the iron tower, reducing influences imposed on the stability of the iron tower, and being conducive to prolonging the service life of the iron tower.

The invention discloses a pneumatic small U-shaped pipe bender. The pneumatic small U-shaped pipe bender comprises a frame, wherein a bending clamping mechanism, a swing arm, a swing arm power mechanism, a cutting mechanism and a core feeding mechanism are arranged on the frame, wherein the swing arm is hinged to the frame through a swing shaft and is driven by the swing arm power mechanism to swing in a direction close to or far away from the bending clamping mechanism by taking the swing shaft as an axis; the core feeding mechanism is fixed below the swing arm and matched with the bending clamping mechanism to jointly clamp a workpiece to be bent; and the core feeding mechanism comprises an installation base plate, a core feeding sliding plate is arranged on the installation base plate and can move back and forth along an X axis on the installation base plate, a core shaft assembly is arranged at one end of the core feeding sliding plate, a cam and a track groove are arranged at theother end of the core feeding sliding plate, the cam is connected with the core feeding sliding plate through a roller, one end of the roller is fixed to the core feeding sliding plate, and the otherend of the roller penetrates into the track groove. Therefore, the pneumatic small U-shaped pipe bender has the advantages of reinforcement effect, larger core pulling force, lower cost and environmental protection.