16 results about "Traction Method" patented technology

The invention provides an auxiliary traction method applied to a pultrusion process. The auxiliary traction method comprises the following steps: calculating a traction force required by a to-be-extruded finished product; if the required traction force is smaller than the strength of the guide rope, the guide rope is used for being connected with the end of the to-be-extruded finished product, and traction of the to-be-extruded finished product is executed through the guide rope; otherwise, the finished product to be extruded and pulled, the high-strength traction belt and the traction rope are sequentially connected, and traction of the finished product to be extruded and pulled is executed through the high-strength traction belt; the guide rope is arranged in the auxiliary traction device, and the auxiliary traction device is used for tensioning the guide rope and winding the guide rope. The traction device has the beneficial effects that according to different application scenes, two schemes are designed to meet the requirements of different product sections and pultrusion speeds, and the labor cost is saved while waste of glass fiber dry yarn raw materials in the pultrusion starting stage is reduced; and the auxiliary traction device provides continuous pulling force and automatically rolls, and the starting speed of the composite material pultrusion process can be matched.

The utility model discloses a traction device for plastic pipe processing, which comprises a bin body and four groups of traction components, the four groups of traction components are all obliquely arranged in the bin body and are arranged in a rectangular array, and the two ends of the two groups of traction components below the bin body are both fixedly connected with the inner walls of the two ends of the bin body. Adjusting assemblies are arranged at the two ends of the two traction assemblies located above the bin body, the two traction assemblies are connected with the inner walls of the two ends of the bin body through the adjusting assemblies at the two ends, and the traction ends of the four traction assemblies all face the center of the bin body. According to the traction device for processing the plastic pipe, the stability of traction of the plastic pipe through the four traction assemblies is better than that of a traditional traction method, and the traction block made of rubber can increase the friction force between the traction block and the outer wall of the plastic pipe, improve the traction effect and reduce abrasion to the outer wall of the plastic pipe at the same time; the two traction assemblies above are adjusted through the adjusting assembly so as to adapt to traction of plastic pipes with different pipe diameters.

To provide a traction device and a traction method capable of stopping rotation of a pulley when load torque exceeding operation torque is applied, capable of being used as assistance of manual traction since the operation torque can be changed, and capable of preventing a bobbin from being firmly clogged in an underground buried conduit.SOLUTION: A traction device 1 of the present invention is used for a conduit continuity test of an underground buried conduit 2, and includes a pulley 11 which tows a bobbin 3 passing through the underground buried conduit 2 and around which a rope 4 attached to the bobbin 3 is wound, an electric motor 12 which rotates the pulley 11, a rotation stopping means 13 which stops rotation of the pulley 11 when a load torque exceeding an operation torque is applied to the pulley 11, a torque setting means 14 which can change the operation torque, and a speed setting means 15 which sets a rotation speed of the electric motor 12.SELECTED DRAWING: Figure 1

The invention relates to the technical field of orthodontics, in particular to a buccal side embedded canine tooth traction guide plate and a traction method thereof.The traction guide plate comprises a fixing end and a traction end, the fixing end is of a rectangular structure, the fixing end is fixed to an orthodontic bracket and an orthodontic arch wire on rear teeth through metal ligature wires, and the traction end is connected with the metal ligature wires. A traction end is mounted on the side, close to the embedded teeth, of the fixed end, the traction end is of a bent arc-shaped structure, a first traction position and a second traction position are arranged on the traction end, and the traction end is connected with a traction site bonded to the embedded canine teeth through an elastic rubber chain so as to pull the embedded canine teeth; according to the invention, the arc-shaped traction end with the first traction position and the second traction position is designed, the first hook is utilized to realize inclined movement of the embedded canine from the embedded position to the target area in the first stage, and the plurality of second hooks are utilized to realize vertical positioning and fine position adjustment of the teeth in the second stage; the accuracy and controllability of a tooth moving path are improved, and the treatment period is shortened.

The application provides an aircraft ladder frame traction device and a traction method, and belongs to the technical field of traction devices. The aircraft ladder frame traction device comprises a traction vehicle body, and a lifting mechanism is installed on the top of the traction vehicle body. By installing the lifting mechanism on the top of the traction vehicle body and installing the buffer mechanism on the top of the lifting mechanism, the support table is installed on the top of the buffer mechanism, and then the traction vehicle body is moved to below the aircraft ladder frame cross beam, the lifting mechanism drives the support table to move upward, so that the support table is in contact with the bottom of the aircraft ladder frame cross beam, the aircraft ladder frame cross beam extrudes the support table downward, and then the buffer mechanism is compressed, so that the downward pressure is applied to the traction vehicle body, and the ground holding capacity is improved. In addition, the rack is installed on the top of the lifting mechanism, the clamping mechanism is installed on the top of the support table, when the support table moves downward, the rack drives the clamping mechanism to move, so that the aircraft ladder frame cross beam is automatically clamped and fixed, and the use is convenient.

The utility model relates to the technical field of medical instruments, in particular to a pair of separating type traction forceps, and aims to solve the technical problems that the tissue injury risk is increased, the operation time is prolonged and the traction part cannot be flexibly adjusted due to the fact that a puncture suture penetrates through tissues in the prior art. The pair of separating type traction pliers comprises a clamping assembly, a grab handle assembly and a traction rope. The clamping assembly comprises a first clamping jaw, a second clamping jaw and a clamping mechanism, the grab handle assembly comprises a main plier body, an auxiliary plier body and a sliding mechanism, and the main plier body and the auxiliary plier body are hinged through the sliding mechanism. The main plier body and the auxiliary plier body are detachably connected with the first clamping jaw and the second clamping jaw respectively. The sliding mechanism is used for driving the clamping mechanism to lock or unlock the clamping angles of the first clamping jaw and the second clamping jaw. The separating type traction forceps are provided with the clamping assembly and the grab handle assembly which are detachably connected, the clamping assembly which locks the clamping angle after being separated is meshed on the abdominal cavity tissue, and rapid and firm butt joint with the abdominal cavity tissue is achieved. The technical problems that the tissue damage risk is increased, the operation time is prolonged and the traction part cannot be flexibly adjusted due to the fact that a puncture suture penetrates through the tissue in an existing tissue traction mode of the laparoscopic operation are solved.

The application discloses a strong traction device, system and traction method, and the strong traction device comprises a base, a push-pull device, an inclined connecting rod, a main connecting rod, a telescopic small arm and a joint hydraulic cylinder. The push-pull device is connected with the base, and the front end of the push-pull device can be extended or contracted relative to the base along a first preset direction. One end of the inclined connecting rod is hinged to the front end of the push-pull device, and the other end of the inclined connecting rod is hinged to one end of the telescopic small arm. The other end of the telescopic small arm is used for traction of a hydraulic support. One end of the main connecting rod is hinged to the base, and the other end of the main connecting rod is hinged to the inclined connecting rod. One end of the joint hydraulic cylinder is hinged to the main connecting rod, and the other end of the joint hydraulic cylinder is hinged to the telescopic small arm. The strong traction device can output a traction force much larger than the pulling force of the push-pull device in a small range through the lever principle, overcome the maximum value of the static friction force of the hydraulic support in the starting stage, and make the hydraulic support traction route be pulled according to an ideal path.

The invention relates to the technical field of cervical vertebra lesion treatment, and discloses a traction device and method for treating cervical vertebra lesion, the traction device comprises a traction chair, a supporting part installed at the position of a seat of the traction chair and a shoulder supporting part installed above the seat, the sliding rods are of concave structures and penetrate through armrests of the traction chair seat in a sliding mode, supporting plates are fixed to the tops of the sliding rods, and folding rods are fixedly connected to the opposite sides of the sliding rods on the front side and the rear side; the surface of the sliding rod is sleeved with the spring, and the two ends of the spring are fixed to the bottom of the supporting plate and the top of the handrail respectively; as the movable plate slides on the surface of the sliding plate and the height of the limiting plate is adjusted through the fixing bolt, the limiting plate can be adjusted according to the position of the shoulder of the patient, so that the shoulder of the patient can be conveniently limited during traction, the limiting plate abuts against the shoulder during traction to prevent the shoulder from moving upwards, and the traction effect is improved. The traction force is concentrated on the cervical vertebra.

The application discloses a helicopter universal traction structure and a traction method thereof, and relates to the technical field of traction vehicles. The application comprises a traction frame, one end of the traction frame is provided as a U-shaped structure, and a helicopter front landing gear is internally installed, one end of the helicopter front landing gear is symmetrically connected with a connecting roller in a rotating mode, one end of the traction frame is symmetrically provided with a connecting groove, the connecting roller is internally installed in the connecting groove, one end of the connecting groove is provided with a connecting assembly, the other end of the traction frame is provided with a mounting block, and the top of the mounting block is rotatably connected with a steering handle. The spring one, the damper and the braking assembly are used in cooperation, so that when the helicopter front landing gear is suddenly stopped, the spring one and the damper absorb and buffer the inertial thrust received by the traction frame, and the braking assembly is used in cooperation to increase the friction between the traction frame and the ground, so that the braking distance of the traction frame is shortened, and the use safety of the traction vehicle is effectively improved.

This utility model relates to the technical field of colored yarn traction and conveying devices, and discloses a traction device for colored yarn production, including a mounting plate. An airflow traction mechanism and an outlet mechanism are fixedly installed on the front of the mounting plate. The airflow traction mechanism includes a traction box and an air supply device. An airflow channel is provided inside the traction box. Several air holes communicating with the airflow channel are symmetrically opened on the top and bottom of the traction box. The air supply device is used to output high-pressure airflow to the several air holes. The ends of the several air holes communicating with the airflow channel are all inclined towards the outlet mechanism. This utility model uses an airflow traction mechanism for colored yarn traction and conveying. The airflow traction mechanism, with its structure of the traction box and an air supply device, can pneumatically convey colored yarn. That is, a circulating airflow is formed inside the airflow traction mechanism, and the yarn conveying effect is achieved through the airflow. Compared with the traditional roller traction method, it can avoid the rubbing and color fading of undried colored yarn during the traction and output process.

According to the super-long cable strand traction method and system, a double-fulcrum stress structure is constructed for the cable strand to be pulled through the front-end puller and the rear-end puller, and concentrated loads borne by traditional single-point traction are effectively dispersed to two supporting points of the front-end puller and the rear-end puller; therefore, the risk of head warping or overall overturning of the puller caused by single-point clamping stress concentration is greatly reduced, and a stable mechanical basis is provided for traction of an ultra-long heavy-load cable strand; in the traction operation, the monitoring module and the background control module are used for monitoring the traction speed and the balance condition of the puller in real time and actively regulating and controlling the traction speed and the balance condition of the puller in real time, transverse shaking of the puller is remarkably reduced, it is guaranteed that the cable strand can stably move forwards along the preset track and posture, and finally the high-precision and high-safety stable traction target is achieved; the core technical problem of super-long cable strand traction in super-large-span suspension bridge construction is effectively solved.

The invention provides a segment traction method and a segment traction device using the same. The traction method includes a segment traction step of controlling the drive device to move the compression member, providing a traction force to pull the segment by a traction movement in which the compression member is driven by the drive device to move the compression member. The pressing member at a traction waiting position is moved in a first direction from the rear of the spine toward the front of the spine to pull the spine to a traction start position, and then the pressing member is moved in the longitudinal direction of the spine toward the front of the spine to pull the spine to the traction start position. And a traction unit that moves in a second direction from the tail side to the head side and drives and pulls the spine to a traction end position. Preferably, the traction starting position can be a lumbar vertebra part, and the traction ending position can be a thoracolumbar vertebra conversion part.

The invention belongs to the technical field of waterproof coiled materials, and discloses a butyl rubber self-adhesion waterproof coiled material surface layer stripping traction device which comprises a first support body, a second support body, a third support body, a fourth support body, a bonding collecting device, a bonding analyzing device and a stripping device. The bonding acquisition device consists of a transmitting device and a receiving device; the bonding analysis device comprises an arithmetic device; the stripping device consists of a traction device and a magnetic powder device; the adhesion analysis device is electrically connected with the first receiving body, the second receiving body, the traction device and the magnetic powder device. The invention further discloses a stripping traction method. The invention has the following main technical effects: the structure is simple, and the implementation is easy; the tension can be automatically detected and controlled, so that the situation that the sheet is stretched and dragged due to too low traction speed or the product is damaged due to too large pre-tensioning tension due to too high traction speed is avoided; and meanwhile, whole-course recording and control of product quality are realized.

The invention discloses a traction mechanism and traction method for a special-shaped steel bar lock catch armoring machine, and belongs to the technical field of marine flexible hoses. The device comprises a base, a traction device and a driving device; the traction device comprises a plurality of traction units arranged in the process direction, each traction unit comprises a first traction roller, a second traction roller and a mechanical cylinder, the first traction rollers and the second traction rollers are oppositely arranged, and the first traction rollers and the second traction rollers are installed on respective roller seats through rolling bearings. The first traction roller and the second traction roller form a traction channel in the base; the mechanical cylinder acts on the first traction roller through the roller seat, so that the first traction roller compresses relative to the second traction roller along the connecting line direction of the first traction roller and the second traction roller; the driving device comprises a motor fixedly connected with the base and a synchronous transmission mechanism connected with the traction roller shafts and is used for driving the second traction rollers to rotate at the same speed in the same direction. According to the mechanism, hydraulic loading is replaced, and meanwhile, clamping force can be independently adjusted and stably kept, so that the machine adjusting efficiency and the operation stability are improved on the premise that traction is guaranteed to be constant in speed and same in direction.

The invention relates to the field of pultrusion equipment, in particular to a pultrusion traction system and method for actively inhibiting stick-slip vibration, and the pultrusion traction system comprises a chain tension collection module arranged at a stress node of a traction chain of a crawler traction module, and an acoustic energy injection module embedded in a crawler plate assembly of the crawler traction module, the control unit is in communication connection with the chain tension acquisition module and the acoustic energy injection module; the pultrusion traction method comprises the step of increasing the output power of the acoustic energy injection module when a signal which is sent by the chain tension acquisition module and indicates that the tension gradient is in nonlinear sharp increase is received. The clamped profile is used as a stress wave conduction medium, high-frequency mechanical wave energy is reversely conducted to the interface of the profile and the pultrusion die, and the acoustic softening effect is triggered, so that the friction coefficient between the profile and the pultrusion die is actively reduced, and stick-slip vibration can be effectively inhibited.

The present application relates to the technical field of traction device, specifically a communication cable traction device and traction method, comprising a mounting frame, a mounting shell, a traction structure, a first guide structure, a cleaning structure, a limiting structure, a second guide structure, a supporting structure, a blowing structure and a diesel engine; The supporting structure is arranged to facilitate the lifting of the mounting frame, so that the moving wheel is no longer in contact with the ground, and each supporting rod is adjusted in height on uneven ground by sliding with the connecting plate, improving the stability of the mounting frame, and the cable is guided by the cooperation of the first guide structure and the second guide structure, avoiding the cable from deviating on the conveyor belt, and the traction structure is arranged to facilitate the traction construction of the cable, and the cleaning structure is arranged to facilitate the cleaning of the sand particles on the surface of the cable, avoiding the influence of sand particles on the service life of the conveyor belt, and cooperating with the blowing structure to blow away the cleaned sand particles, making the cleaning effect better.