44 results about "Arm Fracture" patented technology

The invention provides a percutaneous minimally invasive pedicle screw / rod internal fixation system. The system comprises a pedicle screw, a longitudinal connecting rod, a locating needle tube, a guide needle, a dilating core, a placed screw guide sleeve, a screw loader, a rod holder, a distraction pressurizer, arm fracture devices and a screw loading base, wherein the locating needle tube and the guide needle are used for determining the position of a placed screw; the dilating core is used for dilating a screw placement channel; the arm fracture devices are used for fracturing long arms of the pedicle screw; the pedicle screw comprises a screw body, a screw base, two fracturable long arms and a plug screw; the screw body is connected with the screw base; the two fracturable long arms are oppositely and fixedly connected to the screw base to form a U-shaped structure in which the longitudinal connecting rod can be embedded; the two fracturable long arms extend out of the skin incision; and the plug screw is screwed in the U-shaped structure formed by the two fracturable long arms so as to compress the longitudinal connecting rod. By utilizing the system provided by the invention in the posterior thoracolumbar minimally invasive surgery, the trauma is little, and the haemorrhage is less; and the system is simple and flexible to operate and can achieve the effect of open surgery.

An arm fracture binding therapeutic instrument comprises a base part, a bandage winding part, two correction parts and two medicine application parts. The arm fracture binding therapeutic instrument is characterized in that two sliding blocks of the bandage winding part are slidably installed in two dovetail grooves of the base part respectively, and two first gears mesh with two racks respectively. The bottom surfaces of first telescopic sleeves of the two correction parts are fixedly installed on the upper surface and the lower surface of a base plate of the base part respectively, third steering engines of the two medicine application parts are fixedly installed in two third steering engine bases respectively, the angle of a medicine spray head is adjusted through the third steering engines, the position of the medicine spray head is adjusted through a fourth hydraulic cylinder and a fifth hydraulic cylinder to spray medicines to the injured position, the medicines are sprayed in position more comprehensively, and a wound heals more quickly.

Provided is a broken arm rehabilitation massager. The problems that for an existing massage mode, the arm massage strength is nonuniform, and the massage efficiency is low are effectively solved; themassager comprises a base plate which is provided with a sliding base, a support frame is arranged on the sliding base, and a first reel is arranged on the support frame; a gear is coaxially arrangedon the first reel, a rack is meshed with the right side of the gear, a connecting rod is fixed to the lower end of the rack, massage blocks are connected to the free ends of a cross rod and the connecting rod, each massage block comprises a left arc-shaped plate and a right arc-shaped plate, rubber layers are connected to the inner side faces of the left arc-shaped plate and the right arch-shapedplate through multiple springs, and the inner side faces of the two rubber layers are arranged oppositely; a left limiting page and a right limiting plate are arranged on the base plate, when the twomassage blocks enter the portion between the left limiting plate and the right limiting plate, the distance between the left ends and the right ends of the rubber layers become smaller, and the two massage blocks enter the portion between the left limiting plate and the right limiting plate to form a massage cavity; the massager is ingenious in structure, easy to operate and high in massage efficiency.

The invention discloses an arm fracture rehabilitation device which comprises a lower ring body and an upper ring body. The lower ring body and the upper ring body are symmetrically arranged. By pulling out a middle connecting rod, an upper connecting rod at the upper portion and a lower connecting rod at the lower portion are expanded outwards, arms recovered from bones of different thicknesses can be placed in the center of the device, a guiding wheel arranged at the lower connecting rod achieves the guiding effect, the arm can be sleeved with the device more easily, the middle connecting rod is loosened, under the effect of a compression spring and an extension spring, the middle connecting rod can be retracted inwards, and the arms are clamped; in this way, the device is better in adaptability of the arms of different thicknesses, the extension spring at the rear end of the arm and the compression spring located at the upper portion of the arm can enable the arm to be in the exercise state during bending, the exercise strength of the arm can be kept all the time, and the exercise performance is better; liquid medicine or iced water inside the arc shell slowly flows to a spongelayer from a nozzle on some fractured arms, the applying effect can be given to the arms, and scratches or pain of edema arms is relieved.

The invention provides a single freedom degree intelligent arm rehabilitating device coordinated with somatosensory games. The single freedom degree intelligent arm rehabilitating device coordinated with the somatosensory games comprises a control unit, a power and transmission device, a supporting frame and a manual adjusting assembly, wherein the supporting frame comprises an upper arm supporting frame and a lower arm supporting frame; the power and transmission device is used for connecting the upper arm supporting frame and the lower arm supporting frame; the manual adjusting assembly is arranged on the power and transmission device; the control unit is provided with a control panel and a somatosensory sensor; a rehabilitating arm captures a systemic action of a patient through the somatosensory sensor, and controls the power and transmission device to drive the upper arm supporting frame and the lower arm supporting frame to move through the control panel; a freedom degree of an elbow is achieved between the upper arm supporting frame and the lower arm supporting frame through the power and transmission device. The single freedom degree intelligent arm rehabilitating device coordinated with somatosensory games is used for helping the patient suffering from arm fracture to do reasonable, effective and funny rehabilitation training, and has the characteristics of shortening the rehabilitating time and improving the rehabilitating efficiency.

The invention discloses a wearable auxiliary fixing clamp for arm fracture. The fixing clamp comprises a wearing device and a fracture fixing device, the fracture fixing device is installed on the side face of the wearing device, the wearing device is worn on the body of a user, an upper arm clamp is connected to a forearm clamp through a fixing belt, and therefore the weight of arms is transferred to the whole body through the wearing device, movement of people is facilitated, and fatigue of the neck is effectively relieved; a movable plate is opened, the forearm is placed in the movable plate, then the forearm clamp limiting rotating rod rotates, so that a limiting block on the forearm clamp limiting rotating rod can be inserted into different limiting holes in the forearm clamp fixing rod, an upper movable plate is adjusted to rotate by different angles, and the movable plate is closer to the arm; and the height of a sliding block can be adjusted by rotating the threaded rotating rod, so that the height of the upper movable plate is adjusted to clamp the forearm, the forearm is fixed through a bridle and prevented from moving, and recovery of the forearm is facilitated.

The invention discloses an auxiliary exercise device for preventing finger joint stiffness during arm fracture nursing. The auxiliary exercise device comprises a palm placing plate and an electric push rod, wherein one end of the palm placing plate is connected with an arm supporting plate through an angle adjusting structure, and the other end of the palm placing plate is detachably provided witha four-finger exercise end. A rhombic opening rod is driven by an electric telescopic rod to move backwards, so that a rope fixing plate can also move backwards along with the rhombic opening rod, atthe moment, a lower knuckle fixing area, a middle knuckle connecting area and an upper knuckle fixing area can be driven to rotate downwards under the action of the rope fixing plate and a connectingrope, and as a result, fingers are driven to carry out holding exercise, when the electric telescopic rod drives the rhombic opening rod to move forwards, the lower knuckle fixing area, the middle knuckle connecting area and the upper knuckle fixing area are reset under the action of a first torsion spring, so that the four fingers are straightened along with the rhombic opening rod, and the fourfingers are subjected to bending and stretching exercise.

The invention discloses a rehabilitation exercise device for children with arm fractures. The problem that the compliance is poor when the children with the arm fractures conduct rehabilitation exercise is effectively solved. The device comprises a box body, a fixing plate is arranged on the right side of the box; u-shaped plates are hinged to the left ends of the fixing plates, and a flat plate is arranged between the two U-shaped plates through a supporting plate. Connecting plates are arranged at the lower ends of the flat plates, and a fixing shaft is arranged between the two connecting plates. A sliding block is slidably connected to the fixing shaft. A pressure spring sleeves the fixed shaft; a square block is arranged on the left side of the box body; the upper end of the square block is hinged to the sliding block through a push rod. Fixing belts are arranged on the fixing plate and the flat plate; a U-shaped shell is hinged to the left end of the flat plate, the front end and the rear end of the sliding block are hinged to the U-shaped shell through pull rods respectively, a pressing plate is slidably connected to the upper side of the U-shaped shell, an inverted-L-shaped plate is arranged on the pressing plate, teeth are arranged at the left end of the inverted-L-shaped plate, a top plate is hinged to the left side of the U-shaped shell, and gears are coaxially arranged at the front end and the rear end of a pin shaft respectively. The device is ingenious in conception and convenient to use, and the recovery speed of the affected limb of the child is increased.

The invention relates to the orthopedics department, and in particular relates to a protecting and monitoring device for the fracture point of the arm. The invention aims at providing the protecting and monitoring device for the fracture point of the arm, which can examine the body temperature, blood pressure and pulse simultaneously, and can well fix the arm during the examining process. The technical scheme is as follows: the protecting and monitoring device for the fracture point of the arm comprises a main support plate, bearing blocks, a rotation shaft, a rotation plate, a screw rod, a pressing block, a rotation support plate, guide sleeves and the like, wherein a groove is formed in the left part of the main support plate, the bearing blocks are arranged on the upper and lower wallsin the groove, the rotation shaft is connected between the upper and lower bearing blocks, and the rotation plate is arranged at the upper part of the rotation shaft. For the protecting and monitoringdevice, through a pulse detection head, a body temperature probe and a blood pressure probe, the pulse, body temperature and blood pressure of a patient suffering from arm fracture can be simultaneously detected, then the stepwise examination is not needed, and therefore, the time of medical workers is saved. Elastic cords and fixing arc blocks are arranged, due to the match between the elastic cords and the fixing arc blocks, the arm of the patient can be well fixed, and thus the arm of the patient is protected from being injured.

The invention discloses an arm fracture temporary fixing bracket for medical treatment. The arm fracture temporary fixing bracket comprises a fixing base plate. Moving clamping groove mechanisms are arranged on the fixing base plate, and are located on two ends of the outer side of a lateral supporting bracket. Medicament bottles are fixedly connected with the tops of the moving clamping groove mechanisms. Medicament spraying nozzles penetrate through moving inner threaded blocks. A lower fixing soft pad is fixedly connected with the top of a lower fixing bracket. An air cooler is fixedly connected with the bottom end in the fixing base plate, and is located on the left side of an air blower. Cooling ventilation holes are formed in the lower fixing bracket and the lower fixing soft pad. The invention relates to the technical field of medical treatment. The arm fracture temporary fixing bracket for medical treatment achieves the aims of medicine spraying to an arm without moving the arm, preventing secondary arm injury, alleviating paint of a patient, facilitating operation of medical workers, conducting continuous cooling and detumescence to a wound, preventing wound infection, accelerating detumescence at a fracture part, and improving comfort of patients during treatment.

The invention relates to the technical field of medical nursing devices, and discloses a hand fixing device for arm fracture recovery; the hand fixing device comprises a main rotating shaft and an arm protection assembly, wherein an upper protection shell is fixedly mounted on the front side of the main rotating shaft, and through cooperative use of all structures in the arm protection assembly; when a user uses the device, only hands are put into the arm protection assembly, and the hanging rope is tightly hung on the neck of a user, so that downward pressure can be formed through supporting force provided by the force part, and a left clamping plate and a right clamping plate in the arm protection assembly are tightly closed, and the arms of the user can be wrapped; therefore, the device can provide certain supporting force for an injured and fractured arm, can also achieve comprehensive protection, prevents the arm of a user from being injured secondarily, and can adapt to the thickness of the arm of the user and achieve self-adaptive adjustment while fixing and wrapping through cooperative use of all structures in the left supporting plate assembly and the right supporting plate assembly. Thus, the applicability of the whole equipment is improved.

The invention relates to a fixing device, in particular to an arm fixation device for a patient with arm fracture. Therefore, the technical problem of the present invention is to provide an arm fixation device for a patient with an arm fracture, which can fix the arm without affecting a wound and is easy to operate. The technical embodiment of the invention is as follows: the arm fixation device for a patient with arm fracture comprises a first arc-shaped clamp plate, a second arc-shaped clamp plate, a cushion, a rubber clamp rod, a connecting block, a waistband, a soft strip, a first sponge strip, a magic sticking buckle and the like. A second arc-shaped card plate is hingedly connected to the front part of the right side of the first arc-shaped card plate. And cushions are connected to the upper part and the lower part of the inner side of the second arc-shaped card plate and the first arc-shaped card plate. The device can prevent the arm of the arm fracture patient from being painful by the first arc-shaped clamp plate and the second arc-shaped clamp plate through the soft cushion. The first and second arcuate clips fix the arm of a patient with a fracture of the arm, avoiding the effects of arm swing on the wound. The first and second arcuate clips fix the arm of the patient with a fracture of the arm.

The invention discloses auxiliary equipment for rehabilitation of a patient with a fractured arm. The equipment comprises a first arm fixing block and a second arm fixing block, the second arm fixingblock is hinged to one side of the first arm fixing block, and an arc groove is formed in the center of the upper surface of the first arm fixing block; first rotary knobs are clamped to two sets of protruding blocks arranged at the two ends of a first rotary rod, therefore the second arm fixing block can rotate around the first arm fixing block by rotating the first rotary knobs, the forearm partcan make movements relative to the upper arm part, so that the patient with the fractured arm can conveniently recover; the first rotary knobs are clamped to the two sets of protruding blocks arranged at the two ends of a second rotary rod; a hollow plastic piece can move by rotating the first rotary knobs, so that a first arc block and a second arc block which are arranged on the upper surfaceof the hollow plastic piece move, the human hand part is pushed to move, therefore the arm can be stretched, meridians and collaterals of the arm can be relaxed, and the recovering of the human arm can be facilitated.

The invention relates to an instrument for rehabilitation, in particular to an instrument for assisting rehabilitation after arm fracture. The invention aims to design an instrument for assisting rehabilitation after arm fracture, which is convenient for people to carry out rehabilitation training on arms, does not bring huge pressure on manpower, material resources and financial resources, and is not easy to cause secondary injury. The instrument for assisting rehabilitation after fracture of arms is characterized by comprising a base, wherein a fixed frame is arranged on the base; and a bending mechanism which is mounted on the fixed frame and is used for training. A torsion bar can be twisted to rotate according to self requirements, a screw rod rotates to adjust a grip, then people can hold the grip to pull the grip to swing up and down, the grip swings up and down to drive a slotted sliding block to swing up and down, a damping spring plays a role in buffering and damping, and meanwhile, an airtight box sucks in air through a ventilation valve. Thus, a buffering function is achieved. In this way, rehabilitation training of the arms of people can be facilitated.

The invention relates to the technical field of first-aid tools, and particularly relates to a first-aid binding tool for arm fracture. The first-aid binding tool for arm fracture comprises a lower arm plate, wherein a upper arm plate is movably arranged above the lower arm plate through a movable hinge, binding bands are fixedly connected on the lower arm plate and the upper arm plate, bottom plates are fixedly arranged on the binding bands, a telescopic pad is fixedly connected on the bottom plates, assembly parts are hinged on the lower arm plate and the upper arm plate, slots are arrangedin the assembly parts, fixing shafts are fixedly arranged on the assembly parts, torsional springs are fixedly connected on the fixing shafts, rotating rods are rotatably arranged on the fixing shafts, sliding grooves are formed in the rotating rods, and sliding blocks are slidably connected in the sliding grooves; the binding tool is composed of two hinged parts, and is divided into a lower-arm fixing part and a upper-arm fixing part, and the angle between the lower arm plate and the upper arm plate can be adjusted by rotating a nut sleeve, thus making the lower arm plate and the upper arm plate perfectly fitted to an injured part of a patient for fixation, so as to guarantee the first aid effect.

The invention relates to a device for rehabilitation, in particular to a device for assisting rehabilitation after arm fracture. It is necessary to design a device that is convenient for people to carry out rehabilitation training of the arm, does not bring huge pressure on manpower, material resources and financial resources, and is not easy to cause secondary injury to assist the rehabilitation of arm fractures. An apparatus for assisting the rehabilitation of arm fractures, which is characterized by comprising: a base on which a fixing frame is arranged; and a bending mechanism, which is installed on the fixing frame and is used for training. The invention can adjust the handle by twisting the torsion bar according to its own needs, and the screw also rotates to adjust the handle, so that people can hold the handle and pull it to swing up and down. It has the effect of buffering and damping, and meanwhile, the airtight box draws air in through the ventilation valve, which also achieves the buffering effect, so that it is convenient for people to carry out arm rehabilitation training.

The invention relates to orthopedics, in particular to an arm fracture protection monitoring device. The technical problem is: to provide an arm fracture point protection monitoring device that can simultaneously check body temperature, blood pressure and pulse, and can better fix the arm during the check process. The technical solution is: an arm fracture point protection monitoring device, including a main supporting plate, a bearing seat, a rotating shaft, a turntable, a screw, a pressing block, a rotating supporting plate, a guide sleeve, etc.; the left part of the main supporting plate has a groove, a concave The upper and lower walls of the groove are provided with bearing seats, a rotating shaft is connected between the upper and lower bearing seats, and a turntable is arranged on the upper part of the rotating shaft. The present invention can simultaneously detect the pulse, body temperature and blood pressure of patients with arm fractures through the pulse detection head, body temperature probe and blood pressure probe, without the need for distributed inspection, which can save the time of medical staff. The elastic band and the fixed arc block are arranged, and the elastic band and the fixed arc block cooperate with each other to better fix the patient's arm, thereby preventing the patient's arm from being injured.

The invention provides an arm fracture rehabilitation training auxiliary device, and relates to the field of orthopedics. The arm fracture rehabilitation training auxiliary device comprises a forearm clamping sleeve, an elbow clamping sleeve is fixedly connected to the left end of the forearm clamping sleeve, a big arm fixing sleeve is fixedly connected to the upper end of the elbow clamping sleeve, the outer surface of the forearm clamping sleeve is sleeved with a fixing sleeve ring, and the end, close to the elbow clamping sleeve, of the fixing sleeve ring is fixedly connected with a propelling motor; the output end of the propelling motor is fixedly connected with a propelling wheel, and the outer surface of the propelling wheel is meshed with an arm extension rod. According to the arm fracture rehabilitation training auxiliary device, a forearm clamping sleeve and a big arm fixing sleeve are gradually far away through shifting of an extension wheel along a twisting wheel, the rotation angle of the forearm clamping sleeve and the rotation angle of the big arm fixing sleeve are controlled through the arm extension rod, a patient can adjust the arm extension amplitude according to the conditions of the patient, and the effect of freely controlling the arm extension amplitude is achieved; the problem that the device cannot be controlled when arm stretching angles are different when different patients do rehabilitation exercises in different periods is solved.

The invention discloses an orthopedic fast fixing splint for arm fracture, comprising: a plurality of arc plates, wherein an upper splint are connected between the inner side surfaces of the plurality of arc plates corresponding to the upper side; lower clamping plates that are connected between the inner side faces of the arc plates corresponding to the lower side; mounting frames, wherein the ends of the lower side arc plates are connected with the mounting frames, the inner wall of one side of each mounting frame is connected with a plurality of pressure springs, and the pressure springs are connected with clamping blocks; and connecting sliding blocks, wherein the upper side arc plates are connected with the connecting sliding blocks in a sliding mode, and the bottoms of the connecting sliding blocks are connected with the groove rods. Through cooperation of a pressure spring and a clamping block, the upper clamping plate can be fixed and prevented from automatically moving; through cooperation of a lower clamping plate and the upper clamping plate, the bone of the arm of a patient suffering from arm fracture can be fixed, so that bone displacement can be prevented, and the upper clamping plate can be rapidly moved and reset through a dismounting assembly; and therefore, mounting and dismounting of the instrument can be facilitated, and time and labor can be saved.

The invention provides a pre-treatment device for a plaster bandage for arm fractures, comprising: a sealed soaking shell, the bottom of the sealed soaking shell is provided with a connecting shaft; a soaking treatment tank is arranged inside the sealed soaking shell, the soaking treatment tank is The inner side of the roller is provided with a vertical support wall; the direction-changing tension roller is symmetrically fitted on the inner side of the vertical support wall. In the present invention, two sealed soaking shells provided for this can be closed and fastened together to form a completed sealed container, and then the gypsum bandage is soaked with clean water through the soaking treatment tank inside, and the soaking treatment of each sealed soaking shell is A plurality of direction-changing tensioning rollers are arranged in the treatment tank, and the direction-changing tensioning rollers arranged in the middle of the sealed soaking shells symmetrically arranged on both sides are arranged in correspondence with each other, which can stretch the gypsum bandage and allow the gypsum bandage to pass through. The reciprocating arrangement of the direction-changing tension rollers prevents the gypsum bandages from contacting each other during soaking, which can improve the efficiency of soaking treatment.

The invention discloses an arm fracture temporary fixing bracket for medical treatment. The arm fracture temporary fixing bracket comprises a fixing base plate. Moving clamping groove mechanisms are arranged on the fixing base plate, and are located on two ends of the outer side of a lateral supporting bracket. Medicament bottles are fixedly connected with the tops of the moving clamping groove mechanisms. Medicament spraying nozzles penetrate through moving inner threaded blocks. A lower fixing soft pad is fixedly connected with the top of a lower fixing bracket. An air cooler is fixedly connected with the bottom end in the fixing base plate, and is located on the left side of an air blower. Cooling ventilation holes are formed in the lower fixing bracket and the lower fixing soft pad. The invention relates to the technical field of medical treatment. The arm fracture temporary fixing bracket for medical treatment achieves the aims of medicine spraying to an arm without moving the arm, preventing secondary arm injury, alleviating paint of a patient, facilitating operation of medical workers, conducting continuous cooling and detumescence to a wound, preventing wound infection, accelerating detumescence at a fracture part, and improving comfort of patients during treatment.

The invention discloses a postoperative rehabilitation device for arm fracture. The postoperative rehabilitation device comprises a base, a stand column and a training assembly, wherein the training assembly comprises a twisting mechanism, a flexion and extension mechanism and a rotating mechanism, the twisting mechanism comprises a first driving device, a fixing support, a linkage rod, a connecting piece and a front arm, one end of the linkage rod is hinged to the fixing support, and the other end of the linkage rod is hinged to the connecting piece; a movable end of the first driving deviceis hinged with the connecting piece; one end of the front arm is connected to the connecting piece; the flexion and extension mechanism comprises a second driving device, an arm and a supporting cylinder connected to the arm in a sleeving mode; and the rotating mechanism comprises a control support connected to the front end of the arm and a handle rotatably arranged on the control support. According to the rehabilitation device, the arm of a patient is placed on the supporting cylinder, then under the action of the first driving device and the second driving device, shoulder twisting and armflexion and extension in rehabilitation training can be achieved, the fatigue feeling of the patient in rehabilitation training is reduced, and the rehabilitation device has high practical value.

The invention discloses a traction type personalized bone fracture medical splint and a using method. The traction type personalized bone fracture medical splint comprises a hand splint and an arm splint, wherein one side of the hand splint is connected through a first revolute pair, one side of the arm splint is connected through a second revolute pair, the other side of the hand splint and the other side of the arm splint are connected through hook-and-loop fasteners, and the hand splint is connected with the arm splint through a traction mechanism. The traction mechanism comprises parallelguide rails, hoops and rubber pads, wherein the rail direction of the parallel guide rails is parallel to the axis of the splint revolute pairs, and the splints can be customized according to the individuation of the arm of each patient with the radius bone fracture. The medical splint is suitable for various stages of fracture recovery, the length of the parallel guide rail can be steplessly adjusted, traction force suitable for various stages of fracture recovery is provided, the medical splint has the advantages of being convenient to install, good in breathability, comfortable to wear andthe like, traction parts do not need to be replaced, and arm fracture can be accurately treated according to the length of the guide rails.

The invention discloses a portable computer cooling base. The portable computer cooling base comprises a support arm and a body shell; a connection block is integrally arranged at one end of the support arm; the connection block is rotatably connected with the outside edge of the body shell through a pin shaft; a fan is arranged in the body shell; the fan is fixed on a bottom plate; the bottom late is fixed at the bottom of the body shell through a bolt; the fan is electrically connected with a power connection through a lead; and a grating is integrally arranged at the top of the body shell. Through rotating the support arm, the occupancy space can be greatly reduced, so that the computer cooling base is convenient to carry; through a magnet, the support arm can be fixed, so that the support arm fracture caused by support arm unfolding in the carrying process can be prevented; when in use, the support arm is rotated to a proper field angle according to the size of a computer; and after the power supply is switched on, the fan can be driven to cool the computer, so that the use is convenient.

The invention discloses a removal method of large-arm fracture inclination of a high-altitude towercrane. The method comprises the following steps that firstly, a tower body is reinforced, and then aroof crane and a towercrane cooperate for jointly disassembling the large-arm of the towercrane of the deformed towercrane on-site. According to the technical scheme, the task of disassembling the high-altitude fracture towercrane can be completed on the premise of ensuring safety.

The invention relates to an arm fracture security supporting device, which comprises an arm with multiple chutes. A slide block is arranged inside each chute. The slide block is connected with the arm through first extension springs. The slide block has two clamping blocks which are arranged back and forth, and the clamping blocks and the slide block are connected through second extension springs. The bottom of each chute has two L-shaped grooves. Lower parts of the two clamping blocks are respectively arranged inside the two L-shaped grooves. The arm has two clamping arms which are arranged back and forth. The right end of the clamping arm is hinged to the arm. The two clamping arms are arranged between the two clamping blocks and are respectively contacted with lower ends of the two clamping blocks. There are multiple support frames on the arm. The left end of the support frame is hinged to the arm through a rotating shaft. The lower end face of the arm has a demising groove, front and rear end faces of which are provided with vertical chutes. Two ends of the rotating shaft are respectively arranged inside the vertical chutes. The bottom of the demising groove has a counter bore, and a third extension spring which is connected to the arm and the rotating shaft is arranged inside the counter bore. A safety ropes are arranged on the support frames. Ends of the safety rope are clamped between the two clamping arms. A wire rope is clamped between the two clamping blocks.