81 results about "Traction - action" patented technology

The invention relates to a traction preventing device for a sliding table of a long-stroke horizontal vibrating table, comprising a bearing vibrating table pipeline and a tracking platform which makes synchronous motion with the sliding table of the vibrating table. The pipeline is pressed on the tracking platform through a press block, passes through the tracking platform and is placed in a dragchain. The movable end of the drag chain is fixedly connected with the tracking platform. The tail end of the pipeline exposing outside the drag chain is connected with air supply equipment and a power supply power amplifier system. A displacement detection sensor for sensing the displacement of the sliding table is arranged on the sliding table. The tracking platform is erected on a synchronous belt and moves along a lead rail parallel to the sliding table under the drag of the synchronous belt, and the belt wheel of the synchronous belt is in linkage with a motor. The motor is controlled bya controller which can convert the displacement of the sliding table into the rotate speed of the motor so that the tracking platform and the sliding table synchronously move. The invention has the advantages of eliminating the traction action of the pipeline of the long-stroke horizontal vibrating table and reducing the degree of distortion of waveform output by the vibrating table.

The invention discloses an engineering maintenance vehicle traction force and brake force control method, which comprises the following steps that the whole vehicle information of a locomotive is received; whether the locomotive is expected to be in the brake position or not is judged according to the whole vehicle information; under the condition that the judging result shows that the locomotive is expected to be in the brake position, the dimension of the brake force is calculated; the brake force is divided into air brake force and electric brake force, the air brake force and the electric brake force are respectively delivered to a BCU (brake control unit) and a TCU (traction control unit) for executing the brake action; under the condition that the judging result shows that the locomotive is not expected to be in the brake position, the dimension of the traction force is calculated; the traction force is delivered to the TCU for executing the traction action. The engineering maintenance vehicle traction force and brake force control method has the advantages that through the integral consideration on the integral vehicle information, the dimension of the traction force or the brake force required to be exerted by an engineering maintenance vehicle is obtained, and in addition, the traction force or the brake force is allocated, so the execution action of the TCU and the BCU is more coordinated, the operation of the engineering maintenance vehicle is more stable, more energy can be saved, and the safety is higher.

The invention discloses an immersed self-adapting gas sealing device for a mask aligner. The immersed self-adapting gas sealing device is arranged between a projection lens group and a substrate and consists of an internal member, a middle member, an external member and a deformation member group. In the process that the substrate moves at a high speed to produce a traction action on the liquid, the boundary form of a slit flow field can be changed correspondingly. The self-adapting sealing structure can be used to adjust the caliber size of a hermetic gas passage at real time according to the direction and speed of the substrate movement, thereby correspondingly changing the used hermetic gas flow at different positions, consequently inhibiting the liquid leakage caused by the insufficient hermetic gas pressure at different positions of a sealing boundary and inhibiting the air bubble entrainment caused by excessive hermetic gas pressure, realizing the self-adapting sealing function, and strengthening the reliability and stability of hermetic seal.

The invention discloses a wheeled telescopic continuous creeping tractor used for a horizontal well, which comprises a locking telescopic unit; the locking telescopic unit at least comprises a first locking telescopic unit and a second locking telescopic unit; the first locking telescopic unit is connected with the second locking telescopic unit; and the first locking telescopic unit and the second locking telescopic unit stretch out and draw back alternately to accomplish a traction action. The wheeled telescopic continuous creeping tractor used for a horizontal well has the advantages of reliability in operation, large driving force, and capability of realizing two-way creeping, and can move in the reverse direction for unfreezing in case of freezing underground.

The invention discloses a preparation method of a pulling-extruded polyurethane fiber reinforced composite material. The preparation method comprises the following steps: passing heads of continuous fibers, the mass fractions of which are 50-85%, through a mold, wherein the mold is at least provided with a glue-injecting permeating area, a pre-forming area and a curing area; injecting immediatelysynthesized polyurethane fibers into the glue-injecting permeating area of the mold at a high pressure through a polyurethane fiber injecting system, wherein the continuous fibers in the glue-injecting permeating area are fully permeated by the high pressure polyurethane fibers; moving the heads of the continuous fibers under the traction action of a traction device, wherein the polyurethane fiberpermeated continuous fibers move to the pre-forming area to be heated and gelled under the traction action to obtain a pre-formed continuous fiber reinforced composite material; and then pulling thepre-formed continuous fiber reinforced composite material which is cured and formed in the curing area out of the mold under the continuous traction acting force generated by the traction device. According to the preparation method disclosed by the invention, the mold can be prevented from being blocked after the content of the continuous fibers is improved.

The invention discloses a new energy goods vehicle charging parking space. The new energy goods vehicle charging parking space comprises a charging pile case and a rainshed, wherein the rainshed comprises two supporting columns which are buried in the ground, a water collection tank is welded to the tops of the two supporting columns, the center of the bottom surface of the water collection tank is movably connected with four uniformly distributed rotation rings through bearings, and two roof frames are welded to the outer walls on the two sides of the water collection tank respectively. According to the new energy goods vehicle charging parking space, a plurality of vehicles are easily charged by using the charging pile case, the charging efficiency of the charging pile case is improved,and the phenomenon that a cable is compacted by rolling and damaged is effectively avoided; a charging head can charge a vehicle in the neighborhood, the situation that the cable is dragged forth andback to damage a vehicle body is avoided, the charging head is separated from a socket in time, and after separation of the charging head, under the traction action of a first motor in the charging pile case, the cable is withdrawn so that the phenomenon that due to human negligence, a driver drives a vehicle without pulling out the charging head in time to cause damage of the vehicle and a charging pile can be avoided.

The invention discloses counterweight balance equipment of a crane. The counterweight balance equipment comprises balance blocks, rate pulley blocks, guide pulley blocks and steel wire ropes, wherein the balance blocks are arranged behind a trolley; the rate pulley blocks are arranged on a cross beam and the balance block; the guide pulley blocks are arranged on the trolley and a lifting tool mechanism; the two ends of each steel wire rope are fixed in front of or behind the trolley; the steel wire ropes move round the guide pulley blocks on the trolley and the lifting tool mechanism and the rate pulley blocks on the cross beam and the balance block, and are used for connecting the trolley, the lifting tool mechanism and the balance blocks in series; the balance blocks and the lifting tool mechanism make a reverse movement under the traction action of the steel wire ropes; the balance blocks moves along guide brackets and are provided with balance block fixing devices. The counterweight balance equipment is especially suitable for large or ultra-large container bank cranes and container yard rail-mounted gantry cranes with lifting tool mechanisms with larger self weight.

The invention discloses an improved structure of a thermal insulation textile. The surface layer of the textile is a cotton weaving layer; the inner layer of the textile is a galling-trimmed super-fine denier terylene stretch yarn layer (fibers, the fiber number of which is below 0.55dtex, are super-fine denier yarns in industry, wherein dtex is decitex and refers to the gram of a fiber bundle which is 10000 meters long); the middle layer of the textile is a yarn layer with elastic traction; the fabric structures of the surface layer and the inner layer of the textile are plain knitting structures; the surface layer and the inner layer of the textile are weaved together through the middle layer of the textile; the surfaces of the surface layer and the inner layer of the textile are provided with a plurality of convex longitudinal strips at intervals under the elastic traction action of the terylene cladding yarns of the middle layer of the textile, thereby forming a thicker air layer; and moreover, the open air layer of the inner layer is formed after the galling trimming is carried out on the super-fine denier terylene stretch yarn of the inner layer of the textile, thereby greatly improving the thermal insulation rate.

The invention relates to the technical field of medical equipment, and provides a forceps lifting transmission mechanism and an endoscope. The forceps lifting transmission mechanism comprises a movable part, a fixed part, a connecting rod mechanism and a traction part; the movable part is rotatably installed on the fixed part, the connecting rod mechanism is connected with the movable part, the traction part is connected with the connecting rod mechanism, the connecting rod mechanism can be driven to move by controlling the movable part to move, and then the traction part is driven to conductthe traction action; a limiting structure is arranged between the movable part and the fixed part, the limiting structure comprises an arc-shaped sliding groove and a limiting block, when the movablepart is controlled to rotate, the limiting block can slide in the arc-shaped sliding groove, the limiting structure is used for limiting the movable part so as to make the movable part to move betweena first limit position and a second limit position, when the movable part moves to reach the first limit position or the second limit position, due to the fact that no force exists in the connectingrod mechanism or torque is applied to the connecting rod mechanism, loss of the transmission part can be reduced, and the stability and sensitivity of a forceps lifting device are improved.

The invention discloses a combined unit used for drought-resisting sowing of dry land. The combined unit used for drought-resisting sowing of the dry land comprises components such as a furrowing blade, a hanging bracket, a main frame, a seed fertilizer box, a potato seed sowing mechanism, a potato seed box, a ridging scraper blade, a ridge shaper, a movable support, a film laminating wheel mechanism, a disc earthing mechanism, an L-shaped flexible rack, a film rolling support, a ground wheel, a transmission mechanism and a potato seed furrowing device. The combined unit used for drought-resisting sowing of the dry land has the advantages that firstly the combined unit can complete operations of furrowing, fertilizing, sowing, ridging, shaping, film mulching, film laminating, earthing and the like in one step in the field under the traction action of a tractor; secondly, a ridge film trench planting drought-resisting sowing dry farming planting mode is realized, the drought resistance and yield of crop are greatly increased, and a film saving effect is obvious; thirdly, the combined unit is designed into a two-station foldable rack, so that the transportation safety performance of the combined unit is improved; fourthly, compared with sowing machines of the same type at home and abroad, the combined unit used for drought-resisting sowing of the dry land is simple in structure, compact and flexible in type, low in cost and easy to manufacture, popularize and apply.

The invention provides an asphalt heat-insulating and waterproof coiled material and a preparation method thereof, which relate to the technical field of waterproof building materials and are used for reflecting sunlight to achieve a good heat-insulating effect. The asphalt heat-insulating and waterproof coiled material sequentially comprises: a first isolation membrane, a first asphalt layer, a base layer, a second asphalt layer, a second isolation membrane and a reflective heat-insulation layer from bottom to top. The preparation process of the asphalt heat-insulating and waterproof membrane includes: under the action of traction, the base layer is unfolded; the base layer is impregnated with asphalt, and the first asphalt layer and the second asphalt layer are respectively formed on the downward side and the upward side of the base layer. Form the first isolation film on the side of the first asphalt layer away from the base layer, and form the second isolation film on the side of the second asphalt layer away from the base layer; spray reflective heat-insulating paint on the surface of the second isolation film to form a reflective barrier Hot layer; drying and winding the sprayed asphalt strip. The invention can be used for wall or roof construction.

The invention relates to an indwelling urinary catheterization device for men, belonging to the technical field of medical aids. The male indwelling catheterization device of the present invention comprises a catheter whose one end can be inserted into the bladder through the urethra and is matched with the urethra to prevent detachment, and the other end of the catheter is provided with an annular flexible body for blocking the opening of the external urethra. The urinary catheter of the male indwelling catheterization device of the present invention is provided with an annular sac cavity, which can block the urethral opening after the annular sac cavity is inflated, fundamentally avoiding the leakage of urine from the urethral opening. Further, the end of the catheter used for inserting into the bladder through the urethra is provided with an inner capsule that can be inflated to prevent disengagement from the urethra, and cooperates with the annular flexible body to generate a pulling effect to prevent the inner capsule from floating in the bladder, making the inner capsule The cyst is close to the internal opening of the urethra.

The invention provides a method for making grain on double sides by suction for artificial leather production. The method is characterized in that the artificial leather wound on a first suction roll and a second suction roll in sequence moves forwards sequentially through the first suction roll and the second suction roll under traction action; one side surface of the artificial leather fits the first suction roll and then grain is made by suction on the side surface of the artificial leather by the first suction roll; the other side surface of the artificial leather fits the second suction roll and then grain is made by suction on the other side surface of the artificial leather by the second suction roll. By the method for making grain on double sides by suction, double-side grain is made during the single manufacturing process, processing procedures are simplified, production efficiency is increased, production cost is lowered, and labor intensity of operation workers is reduced. The invention further provides double-side grain suction-making equipment for artificial leather production; by the double-side grain suction-making equipment, making of double-side grain can be completed during the single manufacturing process, processing procedures are simplified, production efficiency is increased, production cost is lowered, and labor intensity of operation workers is reduced.

A vine plant hanging device comprises a closed guide rail, a sliding component, a lifting component and a supporting component, wherein the sliding component is connected with a traction component andslides on the closed guide rail under the traction action of the traction component, the lifting component is connected with the closed guide rail through a connector and used for adjusting the height of the closed guide rail, the supporting component is connected with the traction component and used for supporting and fixing the closed guide rail through the connector, and the sliding componentis further connected with a vine hanging rope which moves along with sliding of the sliding component. The rope can be released at a low position, working efficiency is improved, and working intensityis reduced. In the rope releasing process, the process of inclination, staggering and the like of plants is automatically controlled by mechanical control, and the efficiency is greatly improved.

The invention relates to a dry quenching transferring traction system and method. A rack plate rail and a traction trolley rail are arranged below a transferring bogie rail, and a bogie locking mechanism is arranged below the aligning point of a transferring bogie; a walking gear is arranged on a traction trolley, the walking gear is meshed with a rack rail on the rack plate rail and drives the traction trolley to move; a traction hook is arranged on the traction trolley, and the transferring bogie is correspondingly provided with a hook groove; when the transferring bogie is aligned with thetraction trolley, a bearing rail driving device drives an abutting joint rail to be lifted up to be in abutting joint with the traction trolley, meanwhile, a bearing rail is unlocked to unlock the bogie locking mechanism, and the traction hook is in hooking connection with the hook groove. The dry quenching transferring traction system can achieve unlocking and traction actions on the transferringbogie; the rack plate rail is provided with the rack rail and a plane rail so as to cooperate with the walking gear and a balancing roller on the traction trolley, the transferring traction device can be ensured to operate stably and position precisely, thus automatic operation in a continuous and stable mode is achieved, the structure is compact, the occupied area is small, and the dry quenchingtechnology arrangement is not affected.

The invention discloses an alarm system of a reel sprinkling machine. The alarm system comprises a pressure sensor, a wireless transmitting device, a wireless receiving device and an alarm. The pressure sensor is mounted on an oil circuit of a rodless cavity of a hydraulic cylinder of a ground shovel of the sprinkling machine, the wireless transmitting device is mounted on a main unit of the sprinkling machine, and the wireless receiving device and the alarm are placed in a monitoring room. Programmable logic controllers PLC are respectively arranged in the main unit of the sprinkling machine and the monitoring room. When the reel sprinkling machine works, a sprinkle nozzle vehicle automatically withdraws under the traction action of a rubber water pipe. If the sprinkle nozzle vehicle cannot smoothly withdraw due to jamming in a withdrawing procedure, the pressure of the rodless cavity of the hydraulic cylinder of the ground shovel can be increase, and the alarm can give an alarm. The alarm system has the advantages that the alarm system is convenient to use and high in practicality, excessive sprinkling irrigation and even equipment damage accidents due to jamming of the sprinkle nozzle vehicle can be effectively prevented, the work efficiency of the reel sprinkling machine can be improved, and normal production operation can be guaranteed.

The invention relates to a sectional type traction device for a flat knitting machine and a traction unit control method. Each traction mechanism comprises a fixed seat, a traction unit which is provided with a traction hook and is arranged on the fixed seat in a sliding manner, and a driving unit which is provided with a driving end capable of moving up and down and drives the traction unit to move upwards under the contact action of the driving end; the traction unit control method comprises the steps that a sensor is arranged on the traction unit or the driving unit, the sensor generates a detection signal when the driving end is close to or makes contact with the traction unit, a distance is generated between the traction unit and the driving end when the traction unit hooks a braided fabric, the distance interrupts the detection signal, and the detection signal is generated to enable the driving end to move upwards; and the driving end stops or moves downwards or upwards due to interruption of the detection signal, movement of the driving end is controlled through generation and interruption of the detection signal, and therefore the traction action of the traction unit is controlled, a transmission mechanism is greatly simplified, installation and debugging are quite convenient, and the production cost is reduced.

The invention discloses a large bird flying machine. According to the technical scheme, buoyancy of air is fully utilized for supporting takeoff and flying of the flying machine; a flying mechanism of the flying machine comprises a lift engine, a traction engine, a crank connecting rod, wings and a tail wing; each wing comprises relatively large hinges with relatively large areas and a large quantity of squares, and the tail end of the wing is tilted; a vertical wing of the tail wing comprises a fixed front part and a rear part capable of swinging left and right; a horizontal wing of the tail wing comprises a fixed front part and a rear part capable of swinging up and down. According to the flying machine, the wings generate a lift force in a manner that the squares of the hinges are closed or opened when the wings flap up or down, so that the flying machine can lift off in situ. The flying machine flies forwards under the traction action of the traction engine. The flying machine has the characteristics of capabilities of lifting off in situ and landing at any place, energy conservation, safety, reliability and relatively high carrying capacity, is suitable for medium-altitude, extreme low-altitude, medium-speed and ultra-low speed flying, and is a relatively ideal air traffic transport tool for civil and military use.

The invention relates to an ultra-high-molecular-weight polyethylene protofilament drafting method. The drafting method comprises the steps of carrying out multi-stage drafting and rolling on ultra-high-molecular-weight polyethylene protofilaments by multi-stage first hot boxes arranged sequentially under the traction action of a first drafting roller, so that the multi-stage drafting deformation rate is progressively reduced and the total drafting deformation rate is controlled to be 70-130s<-1>; the total retention time of the ultra-high-molecular-weight polyethylene protofilament in the multi-stage first hot boxes is controlled to be 60-130S, and the retention time in each stage during multi-stage-drafting can be reduced gradually. A supramolecular structure is controlled to be formed during drafting through changes of the drafting deformation rate in multi-stage drafting and the retention time of a filament bundle in the hot box, and furthermore, the slippage among macromolecular chains during drafting can be reduced, the ultra-high-molecular-weight polyethylene fiber can be effectively stretched, and the mechanical property of the fiber can be improved.

The invention provides a molding method for a biaxial orientation polyvinyl chloride pipe for water supply. The molding method comprises the following steps that premolding is carried out, wherein a pipe mold blank is cooled to the melting and softening temperature; then, the melt and softened material is made to pass through a pipe mold of an extruding machine, and meanwhile the material passes through a premolding sizing sleeve, wherein a pipe mold mandrel extends and enters the premolding sizing sleeve; the pre-set material passes through a molding sizing sleeve connected to the premolding sizing sleeve of the extruding machine; the set material then passes through a small pipe-expanding machine arranged at the tail end of the pipe mold mandrel to carry out expanding; the longitudinal crystallization orientation material receives the traction action of a tractor; and finally, the transverse crystallization orientation material is cooled. The biaxial orientation polyvinyl chloride pipe manufactured through the technology and used for water supply is very high in anti-shock and anti-pressure ability, and thus the service life of the pipe can be prolonged.

The invention relates to the field of magnet therapy health care, in particular to a permanent magnet type magnet therapy mattress with region partition. The permanent magnet type magnet therapy mattress comprises a bed surface layer and a functional layer, wherein at least two magnet therapy areas are arranged in the functional layer; each magnet therapy area comprises a plurality of pressure reaction mechanisms, a plurality of magnet slide bars and slide bar rails for the magnet slide bars to slide; the pressure reaction mechanisms and the magnet slide bars are arranged at intervals, and two ends of the magnet slide bars are arranged in the slide bar rails; each pressure reaction mechanism comprises a supporting body, a pressed rod and a contraction rod; a reset spring is arranged between the supporting body and the pressed rod, two sections of the contraction rod are an end A and an end B, the end A is provided with an inserting ring, and the end B is connected with the supporting body or the pressed rod; the magnet slide bars are connected with the inserting rings in an inserting manner, and the inserting rings are driven by traction action of the pressed rods to change the distances with the central positions of the pressure reaction mechanisms.

The invention discloses a quick-open type filter press. By extending / retracting of a piston rod of a transverse pushing main oil cylinder, a transverse movable pressing plate can be controlled to transversely move in a transverse moving space; when the piston rod of the transverse pushing main oil cylinder extends out and controls the transverse movable pressing plate moves rightwards, 20-25 vertical circular polyethylene plates are capable of sequentially and transversely moving rightwards along a slide rail plate and gathering towards a fixed retaining plate under the action of a rightward pressing force of the transverse movable pressing plate to prepare for a grouting residue filter process; after the grouting residue filter process is completed, the piston rod of the transverse pushing main oil cylinder retracts and controls the transverse movable pressing plate to move leftwards, and under the traction action of a first long iron chain and a second long iron chain, the gathered 20-25 vertical circular polyethylene plates are capable of transversely moving leftwards and sequentially and quickly opening to prepare for an unloading process through a chain type quick opening mechanism. The quick-open type filter press has advantages of compact structure, high operating efficiency and high practicality.

The present invention relates to a rotary blanking device which mainly comprises a hopper assembly and a rotary assembly, wherein the hopper assembly comprises a mounting plate (5), a push plate (4), a hopper left-side plate (7), a hopper right-side plate (8), a spring (9), a draft bar (10), a trigger (11), a stand bar (12) and a hopper rotating shaft (13); and the rotary assembly comprises arm-equipped turnplates (17, 18), a transmission shaft (14), a chain wheel (12), block-equipped bearings (15, 21), a turnplate connecting rod (20), a driving lever (1) and a cam (2). The blanking device can be installed on a purpose-made trolley as a rotary seedling transplanter; and in the forward traveling process of the trolley under the traction action of the external force, the rotary seedling transplanter plants the seedlings into the field according to the preset depth, spacing in the row and spacing between rows to realize the mechanically seedling transplantation, thereby greatly reducing the labor intensity and raising the labor productivity.

The invention discloses a child lower limb single hip herringbone fixing and skin traction device. The instrument comprises a lower limb fixing plate, and the lower limb fixing plate is worn on a child and tightly attached to the hip and the lower limb below the hip of the child; a foot fixing plate is arranged below the lower limb fixing plate, and pulley supporting rods are fixedly connected to the two sides of the bottom end of the lower limb fixing plate; the bottom end of the pulley supporting rod is rotationally connected with a pulley which is in sliding fit with a lower steel wire rope. One end of the lower steel wire rope extends upwards and is connected with the upper end of the foot fixing plate; the other end of the lower steel wire rope bypasses the pulley, extends upwards and is fixedly connected with the upper steel wire rope through a traction adjusting device; and a weighing device is arranged on the upper steel wire rope. According to the present invention, when one end of the lower steel wire rope is pulled upwards, the lower steel wire rope generates traction force for driving feet to move downwards through the pulley, so that the traction effect on the lower limbs of a child is achieved, and meanwhile the traction force can be accurately controlled through the weighing device.

The invention relates to an auxiliary traction moving device and a reinforcement cage processing robot. The auxiliary traction moving device comprises a traction movement mechanism and a positioning clamping mechanism, wherein the traction movement mechanism is used for pulling a reinforcement cage to move in the axial direction of longitudinal ribs; and the positioning clamping mechanism is arranged on the traction moving mechanism, the positioning clamping mechanism comprises a movable first positioning clamping assembly and a second positioning clamping assembly, the first positioning clamping assembly is used for clamping the longitudinal ribs in a first direction in the reinforcement cage, and the second positioning clamping assembly is used for clamping the longitudinal ribs in a second direction in the reinforcement cage. Due to the fact that the auxiliary traction moving device is provided with the clamping and fixing and pulling effects on the longitudinal ribs and has the semi-automatic production capacity, the labor intensity of workers and the number of the workers can be reduced greatly, the labor cost of enterprises is reduced, the workers are relieved from heavy physical labor, and the production efficiency and safety coefficient of the workers are greatly improved.

The invention discloses a wheeled telescopic continuous creeping tractor used for a horizontal well, which comprises a locking telescopic unit; the locking telescopic unit at least comprises a first locking telescopic unit and a second locking telescopic unit; the first locking telescopic unit is connected with the second locking telescopic unit; and the first locking telescopic unit and the second locking telescopic unit stretch out and draw back alternately to accomplish a traction action. The wheeled telescopic continuous creeping tractor used for a horizontal well has the advantages of reliability in operation, large driving force, and capability of realizing two-way creeping, and can move in the reverse direction for unfreezing in case of freezing underground.

The invention relates to a device for creating cavities under magnetic traction actions. The device is applicable to endoscopic neck surgery, and is characterized by comprising a magnetic device (1) and support arms; the magnetic device (1) is arranged on the surface of a skin (2), and the support arms are arranged below a layer of the skin (2) and can be attracted by the magnetic device (1) on the surface of the skin (2) to outwardly move, so that the surgical cavities can be created; the support arms include an upper-layer support arm (3) and a lower-layer support arm (6) which are movably connected with each other by a rivet (4); the support arms are made of materials capable of being magnetically attracted. The device has the advantages that only relatively concealed positions of the necks of patients need to be slightly incised, the device can be used for surgical approach and postoperative drainage, and beautifying effects can be realized; the purposes of minimally invasive surgery can be achieved; surgical trauma can be reduced; surgical incision can have high degrees of freedom of selected positions.

The invention discloses a self-service spine joint correcting, activating and dredging device and a using method thereof, and belongs to the technical field of medical instruments. The device comprises a vertical bed frame, a backrest clamping plate combination, a waist swinging combination, a lifting pedal combination and a far infrared light emitting source combination, the backrest clamping plate combination, the far infrared light emitting source combination, the waist swinging combination and the lifting pedal combination are sequentially installed on the front side of the vertical bed frame from top to bottom, the feet of a patient are placed on the lifting pedal combination, the two arms of the patient are clamped and fixed to the backrest clamping plate combination, and the waist swing combination clamps the waist of the patient. In order to solve the problems that an existing traction bed can only achieve traction action, cannot activate and dredge joints and muscle groups connected with the spine, is inconvenient for a patient to adjust by himself / herself and is single in treatment mode, a backrest combination is used for fixing the position, and a waist swing combination swings to enable the waist and the crotch to shake left and right, waist spine pressure can be fully released, and the whole body is relaxed.

The invention discloses a lower limb traction device for preventing the valgus of feet. The device comprises a mounting plate, one end of the upper surface of the mounting plate is connected with a sponge cushion layer in a bonding manner; pulling-up assemblies are arranged on the two sides of the middle of the upper surface of the mounting plate correspondingly, traction assemblies are arranged on the two sides of the other end of the upper surface of the mounting plate correspondingly, a controller is fixedly connected to the other end of the upper surface of the mounting plate, a limiting groove is formed in the other side of the mounting plate, and a first motor is arranged at one end of the limiting groove. According to the invention, the traction assembly is arranged on the mountingplate; a traction plate on the traction assembly can play a traction role on the legs of the patient; the detachable attaching plate is arranged on the traction plate, the coating sleeve on the attaching plate can fix the feet of a patient, the situation that the feet of the patient are turned outwards to form a splayed shape in the traction process is avoided, when the coating sleeve is damaged,the attaching plate is convenient to detach and replace, and the working efficiency of the device is not affected.

The invention discloses an intelligent bone traction tool, traction system and traction method, belongs to the field of medical equipment, and is used for intelligently monitoring traction force. The intelligent bone traction tool comprises a traction arm mounting frame, two traction arms and two traction thimbles, wherein the two traction arms are distributed in a bilateral symmetry mode, one ends of the traction arms are connected with the traction arm mounting frame, the traction ejector pins are mounted at the other ends of the traction arms, and the traction ejector pins mounted on the two traction arms are oppositely arranged. A bone clamping area is formed between the two traction ejector pins, and each traction ejector pin is provided with a pressure sensor capable of monitoring the traction force. According to the intelligent bone traction tool, the pressure sensors capable of monitoring the traction force are arranged on the traction ejector pins, then traction force data can be monitored through the pressure sensors, the situation that the traction force is too large in change and the like can be fed back to medical staff in time so that adjustment can be performed in time, and the traction effect is guaranteed.