153 results about "Traction Method" patented technology

The invention relates to a long-span cable-stayed bridge, in particular to a soft and hard combined traction method for long-cable installation of a cable-stayed bridge. The long-span cable-stayed bridge is characterized by at least comprising stayed cables, a cable-stayed anchor head, a thin tensioned pull rod, a rough tensioned pull rod, a soft drawing head, an auxiliary anchoring base plate, a soft traction self-locking tool anchor, a supporting lug, a soft traction steel strand, a lifting jack, a stayed-cable anchoring base plate and a stayed-cable anchoring nut. The bottom end of the thin tensioned pull rod passes through the auxiliary anchoring base plate and the soft traction self-locking tool anchor through the soft traction steel strand to be fixed with the bottom of the lifting jack; the lifting jack is started and draws the soft traction steel strand to perform reciprocating traction; the lifting jack is drained back and the rough tensioned pull rod replaces the soft traction steel strand for hard traction again; and when the cable-stayed anchor head enters a preserved anchoring port of the tower body, the tool nut is screwed and the stayed cable is anchored on the tower body to finish long-cable installation. The invention solves the difficult problems of large traction force, long traction distance and the like of long-cable installation.

The invention provides a carbon emission reduction data estimation and traction method based on blocks and a readable medium. The method comprises steps that a first network node assembles carbon emission reduction metadata with a preset data format; and the first network node broadcasts the carbon emission reduction metadata to all network nodes in the network so as to verify the carbon emissionreduction metadata, thereby facilitating writing in of the verified carbon emission reduction metadata into blocks. According to the invention, carbon emission quantity data of electric power enterprises are tracked in the technology level; certification permission and excitation are given to carbon emission data meeting standards; and carbon emission permit trading is performed in a rapid, highlyefficient and transparent manner.

The invention provides an automatic cable traction system and method for a fully-mechanized mining face. The automatic cable traction system comprises a cable, a machine head guiding device, a machine tail guiding device and an automatic cable clamp tractor, wherein the machine head guiding device and the machine tail guiding device are fixed at the machine head and the machine tail of a scraper conveyer respectively; one end of the cable is fixed on a coal mining machine; the other end of the cable bypasses the machine head guiding device and the machine tail guiding device sequentially and is fixedly connected with the automatic cable clamp tractor; the coal mining machine is fixedly connected with one end of a cable clamp; the other end of the cable clamp bypasses the automatic cable clamp tractor under the traction of the coal mining machine, and automatically falls into a cable slot of the scraper conveyer. Through the automatic cable traction system and the automatic cable traction method for the fully-mechanized mining face, provided by the invention, the phenomenon that a flying waste rock (coal) injuries people is avoided, the labor cost is lowered, and the production efficiency is greatly improved.

A traction method and apparatus for treating irregularities in the lateral curvature and global posture of the thoraco-lumbar, lumbar, lumbo-pelvic and / or pelvic region of the spine involving the application of an intermittent transverse traction load to a region of the patient's body. The patient is placed in a supine or semi-supine position, and a traction sling is positioned about a region of the body of the patient, where the region of the body can be the thoracic region, lumbar region and pelvic region of the body. A transverse traction load having an intermittently varying magnitude is exerted on the sling to induce an extension posture in at least a portion of the spine of the patient and / or a flexion posture of the pelvic portion of the spine of the patient. The flexion and extension postures serve to at least partially restore normal lateral curvature of the thoraco-lumbo-pelvic region of the spine, thereby reducing lower back pain, correcting abnormal posture, and easing other symptoms that are related to thoraco-lumbo-pelvic spine curvature irregularities.

The invention relates to a polythene tubular product used in construction with a non-excavation drawing method. The tubular product is prepared by mixing polythene with a high concentration of more than 60 percent, polythene with a lower concentration of lower than 15 percent and about 10 percent of glass microballoon and talcum powder with a little crystal whisker, tissuemat E, oxidic polyethylene and resin acceptor and then using an extruding and moulding technique. The ring stiffness of the tubular product is 9.8Kn / m2, the tensile-strength is 19.5 MPa and the elongation at break is 386 percent. The inner and the outer wall of the tubular product is smooth, thus the friction resistance is small during the construction and the discharge current capability of fluid is strong when in use. The tubular product has strong strength, good flexibility and good cracking resistance, thereby being able to effectively absorb impact energy and bypass barrier during the construction without damaging other tubes. Therefore, the tubular product is particularly applicable to replacing and maintaining targeted pipelines and segments of a dense underground pipe net group by using the non-excavation method.

The invention discloses a GNSS signal self-adaption quick traction method. The GNSS signal self-adaption quick traction method comprises the method that carrier frequency, phase tracking, pseudo code phase tracking and bit synchronization are conducted according to the state of traction enable signals; when the time of bit synchronization reaches a preset value, a bit synchronization frequency counter is adjusted, and the position of a maximum value and the position of a minimum value can be searched in an energy column diagram; bit synchronization and traction are judged whether to be failed or not according to the position of the maximum value, the position of the minimum value and the bit synchronization frequency counter. The GNSS signal self-adaption quick traction method can achieve quick traction of strong signals, improve the successful rate of traction of weak signals, and reduce the probability of bit synchronization errors.

The invention relates to a traction method and a system for rail transportation. A soft elastic composite material is used as an elastic vibration-damping structure; a center pivot block is connected with a traction pin by an elastic nylon center pin sleeve, and the nylon sleeve with certain elasticity avoids the rigid shock between the center pivot block and the traction pin and simultaneously realizes the unconstrained rotation between the traction pin and the center pivot block when a vehicle makes a turning; two traction pads are respectively arranged in the front and at the back between the center pivot block and a bogie frame in the traction direction, the traction pads are rubber-metal compound elastic elements, two end plates of the traction pads are respectively provided with a connecting pin, and the connecting pin on the traction pad is directly inserted into a connecting hole for the center pivot block and the bogie frame; and the two traction pads connect the center pivotblock and the bogie frame, transfer traction force and brake force and buffer the shock load in transverse direction, vertical direction and other directions, so that the vehicle has better dynamicalperformance in operation.

The invention provides a barge rocker arm device for launching a jacket. The device comprises a rocker arm, wherein the middle part of the rocker arm is hinged to the end of a barge angled deck integrally; a sliding groove I is formed in the surface, which is opposite to the barge angled deck, of the upper part of the rocker arm; a sliding groove II corresponding to the sliding groove I is formed in the barge angled deck; a rolling wheel is placed inside the sliding groove II, abuts against the hinged position of the rocker arm and the barge angled deck and is limited by a detachable limiting device; and a rolling wheel sunk compartment containing the rolling wheel and a winch spool sunk compartment containing a winch spool are manufactured on the barge angled deck, the winch spool sunk compartment is located behind the rolling wheel sunk compartment, and a cable winding around the winch spool winds around the rolling wheel and is fixed at the upper end of the rocker arm. The device substitutes for past balance weight methods or cable car traction methods, so that after the jacket is launched from the rocker arm of a barge, the rocker arm can return to the original position at the constant speed automatically, no safety problem exists, and the efficiency is high.

A traction device utilizes a harness connected to the body of a patient, such as the head or hips. The harness is connected by a clip to a tether which passes through a ratchet pulley connected to a first end of a spring chamber. A second end of the spring chamber is connected to a support. As tension is applied to the tether, the ratchet pulley incrementally applies traction to the patient as a first spring housed within the spring chamber deflects with the application of force.

The invention discloses an X-waveband power amplifier based on GaN. The X-waveband power amplifier comprises MIN capacitors, a filter capacitor, a thin-film resistor, a stable resistor, a spiral inductor, a microstrip transmission line, a T-shaped connector and a GaN-based HEMT. A signal input end (RFIN) is connected with an input end (1) of the GaN-based HEMT (H) through the first MIN capacitor (C1), the microstrip transmission line (W) and the T-shaped connector (T). A drain electrode control end (Vds) is connected with an output end (2) of the GaN-based HEMT through the microstrip transmission line (W) and the T-shaped connector (T). The microstrip transmission line (W) is a 100-micrometer high-impedance microstrip transmission line. A 100-microfarad electrolytic capacitor is selected as the filter capacitor. The GaN-based HEMT (H) is an NRF01-02a HEMT tube core. The thin-film resistor is made of NiCr material. The X-waveband power amplifier is matched with the input end in a conjugate mode through a load traction method so as to solve the problem that negative resistance occurs at the port of the transistor; the X-waveband power amplifier is stable in work, has the bandwidth of 3.6 GHz to 8.0 GHz, the maximum gain of 11.04 dB, the maximum output power of 33 dBm and the maximum PAE of 29.2%, and is small in voltage standing wave ratio.

The invention relates to a welding strip dual traction mechanism and a welding strip traction method. The mechanism is characterized by comprising a first traction mechanism and a second traction mechanism which are arranged on the front side and the rear side of a conveying belt; the first traction mechanism comprises a first support, a first sliding block capable of moving back and forth along the conveying belt is arranged on the first support, a first clamping jaw arm capable of vertically moving is arranged on the first sliding block, and a first clamping jaw mechanism is arranged on the side, facing the welding strip feeding direction, of the first clamping jaw arm; the second traction mechanism comprises a second support, a second sliding block capable of moving back and forth along the conveying belt is arranged on the second support, a first clamping jaw arm capable of vertically moving is arranged on the second sliding block, and a second clamping jaw mechanism is arranged on the side, facing the welding strip feeding direction, of the first clamping jaw arm. The two traction mechanisms are arranged, the other traction mechanism avoids motion to the waiting position while one traction mechanism pulls the welding strip, the upper mechanism right moves to the waiting position when the lower mechanism finishes welding strip pulling, the welding strip can be circularly pulled, and the efficiency of a series welding machine is improved.

The invention discloses a two-piece type mouth opener for a tracheal cannula for animals. The two-piece type mouth opener comprises a first opening plate, a second opening plate, an adjusting nut and an adjusting supporting rod, wherein two long sides are turned towards the same side to form first side baffles, and oppositely arranged hinged parts are installed at the same ends of the two first side baffles; the second opening plate is installed on one side of the first opening plate with the first side baffles, the two sides of one end of the second opening plate are connected with the corresponding hinged parts respectively, and the second opening plate rotates relative to the first opening plate so as to adjust the size of a channel formed between the first opening plate and the second opening plate. The plate surface of any one of the first opening plate and the second opening plate is provided with a through hole, and the adjusting nut is connected with the through hole. The adjusting supporting rod penetrates the through hole and is in screw thread fit with the adjusting nut, and one end of the adjusting supporting rod abuts against and is connected with the opening plate which is not provided with the through hole. The two-piece type mouth opener can replace a manual rope loop ligature traction method used currently, the oral cavity of an experiment pig can be kept in an open state without the matching by multiple people, and the opening angle can be adjusted randomly.

The invention discloses an emergency traction circuit based on hard wire control, which can determine the traveling direction of a train by identifying the hard wire in a first direction and identifying the hard wire in a second direction. Train occupancy grouping can be determined by the hard line of occupancy identification. The relationship between the traction motor steering of each power vehicle and the traction motor steering of the occupying power vehicle can be identified by the first steering identification hardwire and the second steering identification hardwire. Therefore, regardless of the marshalling form of the train, Whether marshalling is fixed, Applying this emergency traction circuit, It can synthesize the train direction, train occupancy grouping and the relationship between the traction motor steering of each power car and the traction motor steering of each power car to correspondingly control the traction motor of each power car to match the actual running direction, so as to effectively improve the applicability of the emergency traction circuit based on the hard wire control. In addition, the invention also discloses an emergency traction method based on hard wire control and a train, and the effect is as above.

The invention discloses a wearable hand function rehabilitation training device, and relates to the technical field of rehabilitation therapy. The wearable hand function rehabilitation training devicecomprises a mechanism supporting seat frame (1), five groups of Bowden cable traction devices (2) and a soft rehabilitation glove (3). The mechanism supporting seat frame (1) consists of a first vertical panel (11), a second vertical panel (12) and a third vertical panel (13) and is fixed to a device base (14) by screws. Compared with the prior art, the wearable hand function rehabilitation training device has the following characteristics that firstly, a direct current gear motor is used for driving, compared with gas source driving, the control effect is more accurate, and synchronization and real-time performance of rehabilitation training are better; secondly, Bowden cables are used for conducting the force and are matched with a flexible tail end traction method for controlling fingers of a patient to perform rehabilitation training, and comfort and safety are better; and thirdly, compared with an exoskeleton type finger rehabilitation device, the wearable hand function rehabilitation training device is simple in structure, light in weight and convenient to carry and wear.

The present invention discloses automatic traction method and apparatus of a continous controllable train, and in the technical project provided, if the outlet velocity obtained by forward calculation that according to entry state of the train in the speed limiting segment is bigger than setting value then proceeds reverse calculation to determine what kind of entry state is needed to implement the setting value of the outlet state, and if the entry state of the segment can not satisfy the setting value of the outlet state then renews the outlet state of the prior speed limiting segment and proceeds reverse calculation until the speed limiting segment capable of implementing the outlet state. It is obvious that, in the embodiment of the invention, implementing speed limiting constraint normalized by feedback of the entry state and resolving continuity problem of traction calculation, providing rapid and effective means for route, power supply, trains, operation scheme, design and study of operation chart, and creating condition for further automatic drive study, possessing important engineering significance.

The invention provides an underground space subsurface excavation construction method adopting a combined roof, which comprises steps: a proposed underground space is divided into a plurality of spaced channels, first metal plates which are higher than the top ends of the channels are arranged above space positions of the adjacent channels through a traction method, pipe joints which are provided with embedded grouting pipes are arranged in the channels through a pipe jacking method, metal frame units are arranged on top plates of the pipe joints, waterstop coating is injected between the top plates of the pipe joints and the first metal plates through the embedded grouting pipes, adjacent side plates of the pipe joints arranged on adjacent channels and soil bodies between adjacent side plates are removed, the top plates which are arranged on the pipe joints of the adjacent channels are connected through second metal plates, support units are arranged in the channels, concrete is casted in the top plates of the pipe joints, reinforced concrete is casted on bottom plates of the pipe joints, and reinforced concrete is casted on the side plates of the pipe joints which are arranged on the channels of the two sides of the underground space. The underground space subsurface excavation construction method adopting the combined roof reduces construction cost, guarantees construction quality, and is simple in construction method and rapid in construction efficiency.

The invention relates to a polypropylene composite for extrusion foaming. The composite comprises, by weight, 30-70 parts of polypropylene, 15-40 parts of a damping material, 10-30 parts of a reinforcing material, 1-10 parts of a compatibilizer and 0.05-0.5 part of an antioxidant. The polypropylene has the melting index of 0.5-10 g / 10 min (230 DEG C and 2.16 kg) and the melt strength larger than 30 cN (capillary traction method and 2-mm mouth model), and the damping material is a damping polymer or a damping polymer composite with the maximum damping coefficient tan delta large than 0.3 withinthe range of 0-50 DEG C. The foaming requirement can be met after the high-melt-strength polypropylene and the damping material are combined together in the polypropylene composite, the polypropylenecomposite has the synergistic effects of damping and shock absorbing and has the effect of enhancing the damping performance of the composite, and the damping performance of the composite is greatlyimproved.

A traction method for an operating line, in particular a mooring line, of a floating production unit includes the steps of: attaching an end chain portion of the operating line to a socket of a main cable running through a sheave at a work station; reeling in the main cable, using a winch, to bring the socket of the main cable up to the sheave; locking the operating line with a chain stopper; slackening the main cable and moving the sheave closer to the chain stopper to reduce pull on the main cable; reeling in the main cable to run the socket of the main cable through the sheave; once the socket of the main cable has run through the sheave, releasing the operating line from the chain stopper, and reeling in, by means of the winch, the main cable and the operating line connected to it, to set the operating line to a given tension.

The invention relates to a tool and a method for live replacement of 500kV strain insulator strings of substations. The tool comprises a yoke plate fixture, an upper insulator clamp, single-head screws, an insulating block, and insulating pull rods. The yoke plate fixture is fixed to an insulator string conductor side yoke plate. The upper insulator clamp is fixed to a second insulator of an insulator string to be replaced. The single-head screws are connected to the two sides of the yoke plate fixture and the upper insulator clamp. The insulating block is disposed on the yoke plate fixture. The insulating pull rods are connected with the yoke plate fixture and a frame. According to the tool and the method for live replacement of 500kV strain insulator strings of substations provided by the invention, no insulator cradle is used in live replacement of insulators, an insulator string is replaced through a micro over-traction method, the operation over-traction length is reduced from the original 150-200mm to 15mm, and the amount of over-traction of line tightening operation is greatly reduced. Therefore, the conductor construction stress in line tightening is greatly reduced, and the degree of operation safety is improved.

The invention discloses a train storage battery traction system. The system comprises a controller, a first switch, a second switch, a first traction converter and a first 110V storage battery. The first 110V storage battery is connected with a direct current 110V bus through the first switch. The first 110V storage battery is connected with the first traction converter through the second switch.The controller is used for controlling the first switch to be turned on and the second switch to be turned off when confirming that a first pantograph ascends and further used for controlling the first switch to be turned off and the second switch to be turned on when confirming that the first pantograph descends. By the utilization of the system, hardware resources can be saved, the occupied space is reduced, and cost is saved. The invention further provides a train storage battery traction method and a train.

The invention aims to overcome the defects in the prior art and fully utilize the own characteristics of electric vehicles, and provides a traction method used during power shortage of an electric vehicle. The traction method is safe and convenient to use and saves time and labor. The traction method used during power shortage of the electric vehicle uses a traction cable, a power transmission cable and a signal transmission cable and comprises the following steps that S001, when a rescue vehicle finds the power shortage vehicle, the rescue vehicle is connected with the power shortage vehiclethrough the traction cable, the power transmission cable and the signal transmission cable; S002, the rescue vehicle transmits power to the power shortage vehicle through the power transmission cable.By means of the method, resource and time waste caused by a traditional vehicle traction method is avoided, and the safety of the rescue vehicle, the power shortage vehicle and surrounding vehicles in the traction process is also ensured.

The invention discloses an automatic knowledge memory traction method based on cerebral memory scales and induced capture. The method adopts a wearable bioelectrical signal acquisition and transmission terminal and a computer or a server. The signal acquisition and transmission terminal acquires multi-lead brain wave signals in real time and transmits the signals to the computer, the brain wave signals are calculated through a calculating algorithm program in the computer, characteristic ingredients about brain memory processing in brain waves are extracted in real time, non-dimensional data expressed as 0-100 serves as the quantified scales of a memory state of the brain, the scales are converted into naturally sensory stimulating input signals of human, closed loop feedback induction and traction are performed, the fragment moment at which the maximum memory scale of the brain is reached is captured in real time, knowledge playing is triggered synchronously, two-way resonance of the memory state of the brain and knowledge appear is achieved, and the purpose of the automatic process of deep, long-term and efficient knowledge memory is achieved.

The invention discloses a traction method for enabling parallel built ships of 300,000 dry docks to undock. The traction method comprises the following steps: 1. sealing two ship bodies built in parallel in the dry docks with mooring ropes and floating balls; opening a dock door, pressurizing water in the docks, and enabling the parallel ship bodies to float up; 3. tying tugs in the middles of the tail parts of the first-undocked ship bodies towards a dock door with a mooring rope so as to realize undocking; and finally realizing the undocking of the later-undocked ship bodies. According to practical conditions of parallel built ships of 300,000 dry docks, the selecting and sealing sequence of ship docking and undocking traction tools, traction process control, matching with the tugs and the like can be designed and determined; in the process, the sealing condition of dry docks in water pressurization, ship sealing condition in traction, and floating condition in ship undocking can be designed; and the condition that ships can safely and smoothly and fast undock can be ensured by utilizing modes of winch distribution and matching, towing vehicle control and the like.

The invention discloses a civil construction crane. The crane comprises a four-wheel drive trolley, the top of the four-wheel drive trolley is slidably provided with a lift, the lift is laterally driven by a reel through voice control, convenience is provided for an operator, the danger of a high position is reduced, a laser traction method is used for driving the drive trolley to conduct a uniform linear motion, the operator can control the start and stop of the trolley on a lifting platform, a stop position of the trolley can quickly reach an expected value, the working efficiency is high, and manpower is saved.

A traction system for operating lines, in particular mooring lines and / or production lines, of a floating production unit has a number of work stations distributed along the unit, at least at two ends of the unit, and engaged by respective operating lines; a main winch; and a cable transmission device having a duty cable connected to the main winch, and guide means for selectively routing the duty cable to each work station for attachment to a respective operating line; at least one auxiliary winch, having an auxiliary cable connectable to the duty cable, is used to unwind the duty cable off the main winch and run the duty cable, along paths defined by the guide members, into a number of positions close to respective work stations.

The invention discloses a worm and gear traction system for a bridge rotating body, and a traction method. The traction system mainly comprises a control system, a power system, a speed reducing device, a worm gear, a worm, an upper swivel plate and a lower swivel plate. The traction method of the traction system comprises the steps of firstly, using the control system to start the power system so as to drive the worm to rotate, enabling the rotation of the worm to be linked with the rotation of the worm gear, driving the upper swivel plate to rotate by means of the rotation of the worm gear, and driving a bridge body to rotate until the rotating body takes place, wherein the rotating speeds of the worm gear and the worm are regulated and controlled by using the control system to adjust the rotating speed of a motor of the power system in a rotating process, so that the speed of the rotating body is regulated and controlled. The worm and gear traction system and the traction method have the advantages that the forward and backward direction traction for a rotating body structure can be realized, so that the demand of traction direction adjustment can be met when a rotation test is carried out and the rotating body is in place; worm drive is rigid drive, so that a traction hysteresis effect can be avoided, and continuous and uniform traction is realized; mechanical transmission traction is adopted, so that the traction system is good in stability.

The invention discloses a cross-cutting instrument sensor traction method in a road broadening subgrade. The method comprises the following steps: firstly embedding an improved cross-cutting pipe according to the width of the broadening subgrade, mounting a fixed pulley at one side in the cross-cutting pipe close to an old subgrade; binding a cross-cutting pipe sensor on a dragging line of the cross-cutting pipe, drawing the dragging line, dragging the sensor in the cross-cutting pipe to one side close to old road subgrade; finally dragging a data transmission line in the sensor, dragging out the sensor in the cross-cutting pipe to an opening of the cross-cutting pipe, testing once per 50cm and recoding the result through the cross-cutting instrument; removing an adhesive tape for binding the dragging line and the sensor after measuring the data, buckling end covers on two ends of the cross-cutting pipe to finish once measurement; repeating above steps for several times. The difficulty that the cross-cutting pipe cannot be dragged into the pipe to test in the road broadening subgrade is avoided, and the technology support is provided for controlling subgrade settlement deformation in the road reconstruction and extension project.

The invention relates to a vehicle traction apparatus, which is a tractor with an upward ball head and the traction method thereof. A tractor with the upward ball head comprises a traction head, a shell, an inner enclosed ball socket, a support plate, a spring, and a wrench. The design issue of the tractor is that the ball head of the tractor turns upwards, that is, the pherality of a traction head is butted against the circular arc of the inner enclosed ball socket, and the traction head turns upwards. A hole is arranged on the shell, the pherality of the traction head is arranged in the hole, and the outer surface of the pherality is butted against circular arc of the inner enclosed ball socket; When in traction, as the ball head turns upwards, the thread segment of the traction head is connected with the connector of the tractor easily; the pherality is arranged in the hole of the shell and is butted against circular arc of the inner enclosed ball socket, so that the traction and the pulled binding force are at optimum states, and the tracted vehicle is tracted to a proposed position. The invention features simple structure, feasible method, easy operation and convenient and fast assembly, and is applicable to the tractions of various vehicles.

The present invention belongs to the technical field of medical devices and particularly discloses a multifunctional traction frame for orthopedics department. The multifunctional traction frame for orthopedics department comprises a traction frame base seat, a supporting part is arranged at a lower part of the traction frame base seat, a lower limb fixing disk is horizontally and slidably connected to the traction frame base seat along a length direction, a limiting part for fixing a position of the lower limb fixing disk is arranged on the traction frame base seat, a driving part for drivingthe lower limb fixing disk to move is arranged on the traction frame base seat, a lower limb fixing part for binding lower limbs is arranged at a middle part of a left side of the lower limb fixing disk, a foot fixing part for fixing feet is arranged at the middle part of the left side of the lower limb fixing disk, a hook is connected to the foot fixing part, and a balancing weight is detachablyconnected to the hook. The multifunctional traction frame is mainly used for lower limb traction and solves a problem that a lower limb traction method in the prior art is liable to cause inconvenience in treatment for patients.

The invention discloses a traction device for emergency surgery and a traction method thereof. The device comprises a bed plate, a placing plate is arranged at the bottom of the bed plate, movable assemblies are fixedly arranged at four corners of the bottom end of the placing plate, the top ends of the movable assemblies pass through the placing plate and are fixedly connected to the bed plate, and guardrail assemblies for protecting patients are arranged on both sides of the bed plate in a lifting mode. According to the traction device for emergency surgery and the traction method thereof, an electric push rod switch on a movable plate is pressed, the electric push rod works to push guard rails and the movable plate to move upwards, the patient is protected by the guard rails and the movable plate, the affected leg of the patient is hung on an elastic lantern ring, then a crank is rotated to drive a screw rod to rotate, the screw rod moves to drive a sliding plate to move upwards ordownwards along a fixed rod, the lifting height of the leg of the patient can be pulled and adjusted in the process of disinfecting the leg of the patient, the leg of the patient is not required to belifted or put down back and forth by the nursing staff, and time and labor saving.