138results about How to "Won't move easily" patented technology

Provided is an AGV conveying robot and a positioning and orienting method used for the robot. The AGV conveying robot comprises a vehicle frame, and running devices, a clamping arm device, a front blocking device, a conveying device and an electronic control system installed on the vehicle frame correspondingly. The clamping arm device and the front blocking device are located on two sides of the vehicle frame correspondingly, and the conveying device is located on the top of the vehicle frame. The clamping device comprises a clamping arm base, two clamping arms arranged on two sides of the clamping arm base correspondingly, a pushing arm mechanism arranged on the clamping arm base, a pushing base mechanism installed on the vehicle frame and a connecting rod for connecting the clamping arm base. One end of each clamping arm is pivotally connected to a base body and a pushing arm mechanism, and the connecting rod is hinged with the pushing base mechanism. The clamping arms can be driven by the pushing arm mechanism to rotate around the clamping arm base, the clamping arm base is driven by the pushing base mechanism to stretch out and retract into the vehicle frame, and then matches conveying motion of the conveying device, so that the parking and picking automobiles can be achieved. According to the AGV conveying robot and the positioning and orienting method, a vehicle loading tray and a comb-shaped frame for parking vehicles that are essential in a traditional garage can be omitted, and the garage cost is reduced.

The invention discloses an automobile engine oil-gas separator. The automobile engine oil-gas separator comprises a lower hollow cavity (1) and an upper shell (2); a gas inlet pipe (4) where mixed oil and gas enters is connected to the lateral face of the lower hollow cavity (1); an oil outlet pipe (5) is arranged at the bottom of the lower hollow cavity (1); a gas outlet pipe (6) is arranged on the upper shell (2); the lower hollow cavity (1) is internally provided with a first separation mechanism and a second separation mechanism; the first separation mechanism comprises a separation support (8) used for guidance and a cavity body (20) communicated with the gas inlet pipe (4); the cavity body (20) is located in the upper portion of the lower hollow cavity (1); the upper end of the separation support (8) is fixed to the inner wall of the upper portion of the cavity body (20) in a sealed mode; the gas inlet pipe (4) and the outer circumference of the cavity (20) is in tangential connection. The automobile engine oil-gas separator is high in efficiency and good in filtering effect.

The invention discloses a valve element injection mold. The valve element injection mold comprises a cover plate (1), an upper mold fixing plate (2), an upper mold plate (3), a lower mold plate (4), a mold leg (5), a spout (17) fixed to the cover plate (1), and a valve element (7), wherein a runner is arranged below the spout (17); the upper mold fixing plate (2) is fixed to the lower surface of the cover plate (1); the lower mold plate (4) is fixed to the upper surface of the mold leg (5); the upper mold plate (3) is located between the upper mold fixing plate (2) and the lower mold plate (4); a first protrusion (9), a second protrusion (10) and a third protrusion (11) are arranged on the outer side face of the valve element (7) in the axis direction of the valve element (7) in sequence from top to bottom; and annular grooves are formed in the outer side faces of the first protrusion (9), the second protrusion (10) and the third protrusion (11). The valve element injection mold is low in cost, high in precision, high in production speed, capable of achieving batch production and good in quality.

The invention discloses a vertebral plate-rotating opener for a cervical vertebra single-door opening operation. The vertebral plate-rotating opener comprises two tong handles connected through a pin shaft, wherein each of the tong handles comprises a holding part and a clamping part; two spines are arranged on the holding part of one tong handle; the spines are distributed at intervals; a horizontal plate is arranged on the clamping part of the other tong handle; and the horizontal plate and the two spines are all bent toward the opposite walls on the inner side of the two tong handles. The vertebral plate-rotating opener can be used for stably clamping a vertebral plate and can prevent the vertebral plate from sliding and rebounding in an opening process of the vertebral plate, so that medical accidents can be effectively avoided; the holding part is rotated for rotating and opening the vertebral plate by taking a bone slot on a hinge side as an axis; the operation force is controllable; the probability of complete fracture of the hinge-side vertebral plate can be obviously reduced and the injure and even fracture of door opening-side zygopophysis can be avoided; in an operation process, the instrument is prevented from entering into canalis vertebralis, the spinal cord injury can be avoided and the operation is safe and reliable; and a surgeon can visually operate and open the vertebral plate by a single hand and can simultaneously perform the operations of hemostasis, canalis vertebralis adhesion separation, and the like.

The invention discloses a safe and anti-static multifunctional electric control cabinet, which comprises a cabinet body, wherein the front side of the cabinet body is movably connected with a cabinet door through a hinge; the front side of the cabinet door is fixedly connected with a pull ring; the bottom of the cabinet body is fixedly connected with a pad block; a dehumidification box and an air pump are respectively and fixedly arranged on the top of the cabinet body; the dehumidification box is positioned at the left side of the air pump; a chute is formed in the inner top wall of the dehumidification box; a first slide block and a second slide block are respectively and glidingly arranged inside the chute. The safe and anti-static multifunctional electric control cabinet has the advantages that a sealing pad is arranged at the back side of the cabinet door; a sealing clamp groove is formed in a position, corresponding to the sealing pad, of the front side of the cabinet body; the sealing pad is clamped and connected in the sealing clamp groove; when the cabinet door is closed, the sealing effect of the cabinet door and cabinet body connecting position can be enhanced through the clamp connection structure of the sealing pad and the sealing clamp groove; and the influence on the normal work of equipment in the electric cabinet is avoided.

The invention discloses a clamping device for hardware mold machining. The clamping device comprises a bottom plate, supporting rods are correspondingly and fixedly installed at four corners of the top of the bottom plate, installation boxes are correspondingly and fixedly connected to the tops of the four supporting rods, hollow first screw rods and hollow second screw rods which are horizontallyarranged are arranged in the installation boxes, threads of the first screw rods and the second screw rods are opposite in screwing direction and same in screw pitch, the ends, away from each other,of the first screw rods and the second screw rods are correspondingly and rotatably connected to the inner walls of the installation boxes, a rotating rod is jointly arranged on the inner walls of thefirst screw rods and the second screw rods, one end of the rotating rod is rotatably connected with the inner walls of the installation boxes, the other end of the rotating rod penetrates and extendsto the outside of the installation boxes, and a plurality of first spring grooves which are uniformly distributed are formed in the side wall, located in the first screw rods and the second screw rods, of the rotating rod. According to the clamping device, a clamping plate is utilized to clamp a mold in three directions to achieve the purpose of clamping the mold stably and not easily moving.

The invention discloses an automatic cable coupler which comprises a branch passage which is fixed in position and can contain branch cables, a main passage fixed to the branch passage and can contain a main cable and a connecting assembly arranged in the main passage and can couple the branch cables stably and automatically into the main cable. The connecting assembly comprises electronic telescopic rods arranged on the two sides of the inner wall of the main passage, pressing pieces connected to the electronic telescopic rods, limiting pieces arranged below the pressing pieces and limiting the main cable, and conductive sheets arranged below the pressing pieces and located beside the limiting pieces. The automatic cable coupler can couple the branch cables into the main cable automatically and fix the cables stably, so that the cables cannot move easily, stability is guaranteed, no manual operation is needed, and service life is long.

The invention relates to a precise steel latticed column mounting method applied to foundation pit support engineering. The precise steel latticed column mounting method comprises the following steps:determining a straight line: drawing a line or pulling a rope on ground along a pile hole position of a filling pile; determining a direction: pressing a compass onto the straight line, superposing acompass pointer with the straight line, and recording the direction to which the compass pointer points; mounting a calibration part: placing the calibration part on the top of a steel sheath for filling pile construction, enabling at least one side of the calibration part to fit to one outer side wall of a steel latticed column, fitting the compass to the side, superposing the compass pointer direction with the side, rotating the calibration part and the compass until the direction pointed by the compass pointer is a recorded direction, and fixedly connecting the calibration part to the topsurface of the steel sheath; hoisting the steel latticed column; rotating the bottom of the steel latticed column by referring to the calibration standard, and slowly dropping the steel latticed column into the steel sheath; pouring concrete; and dismounting the calibration part. The precise steel latticed column mounting method has the effect that the mounted steel latticed column is not liable to tilt.

The invention relates to the technical field of sewage treatment, and discloses a laminated filter. The laminated filter comprises a machine body shell, a sewage inlet is fixedly formed in the bottomof one side of the machine body shell, a sewage outlet is fixedly formed in the lower surface of the machine body shell, a supporting rod is fixedly connected to the middle of the interior of the machine body shell in a sleeving mode, clamping strips are evenly and fixedly installed on the outer portion of the supporting rod, a plurality of clamping blocks are movably connected to the outer portion of the supporting rod in a sleeving mode, clamping grooves matched with the clamping strips are formed in the clamping blocks, and magnets are fixedly installed in the clamping blocks. According tothe laminated filter, the magnets are arranged on laminations, different magnetic poles of the magnets are opposite, and the magnets attract each other in the filtering stage, so that the laminationsare not easy to displace in the filtering process, the laminations are in a compressed state before one-time backwashing, and impurities intercepted by filtering are tightly clamped between two laminations, so that impurity particles do not accumulate dust and enter the inner rings of the laminations, and the filtering effect is improved.

The invention discloses an abdominal cavity drainage device having the flushing function and used for the hepatology internal medicine department. A liquid accumulation tank, a water storage tank anda material storage tank are formed in a box body. A drainage pipe is arranged at the top end of the box body. The bottom end of the drainage pipe is located in the liquid accumulation tank. Two firstconnecting tanks and a second connecting tank are formed in the drainage pipe. An air outlet hole is formed in the side surface of the drainage pipe. The bottom end of the air outlet hole is connectedwith the second connecting tank. A supporting plate is arranged in the liquid accumulation tank. An air pump is arranged at the top end of the supporting plate. An air conveying pipe is arranged at one end of the air pump. One end of the air conveying pipe is located in the second connecting tank. A submersible pump is arranged in the water storage tank. A water conveying hard pipe is arranged atthe top end of the submersible pump. Two connecting holes are formed in one end of the water conveying hard pipe. A water conveying hose is arranged at one end of the connecting holes. One end of thewater conveying hose is located in the first connecting tank. A storage battery, a control panel and a wireless sending module are arranged in the storage tank. According to the invention, the flushing and drainage functions are achieved, and the drainage effect is good.

The invention discloses a gun exchanging plate comprising a tool side and a main body side. The tool side comprises a tool board and locking rings. First inclined planes are arranged on the locking rings. The main body side comprises a main body board provided with a concave part, a piston with one end being open and the other end being closed, a piston cover and a flange. A bulge is arranged in the middle of the concave part. A circle of steel balls is arranged at the opening end of the piston, the piston is arranged on the bulge in a penetrating mode, and a first airtight cavity is formed between the piston and the main body board. The piston cover is located in the piston and fixed on the bulge, and the piston cover and the piston form a second airtight cavity. The flange comprises an annular flake structure and an extending part. The annular flake structure and the main body board are fixedly connected. A second inclined plane is arranged on the extending part. When the first airtight cavity is aerated, the tool side and the main body side are loosened. When the second aright cavity is aerated, the tool side and the main body side are locked. The steel balls are clamped by the first inclined planes and the second inclined plane with different inclination angles. The gun exchanging plate is safe and reliable in clamping mode, and the risk of disengagement of the main body side and the tool side at the time of clamping can be avoided.

The invention discloses a fixing frame applied to a GPS positioning device and a using method thereof, belongs to the technical field of GPS positioning devices and aims to solve the problems that theGPS positioning device easily moves or falls off when the GPS positioning device is not fixed firmly enough in the using process of the fixing frame, a certain amount of heat is generated after the GPS positioning device is used for a long time, and most fixing frames have no heat dissipation function. A heat dissipation table is fixedly mounted on the upper surface of a fixing frame main body; aGPS positioning mechanism is arranged above the heat dissipation table; electric pushing rods are fixedly arranged t the front end and the rear end of the GPS positioning mechanism; spring seats arearranged on two sides of the GPS positioning mechanism; the spring seats are fixedly connected with the fixing frame main body; a U-shaped pressing plate is arranged above the GPS positioning mechanism; two clamping grooves are fixedly formed in the fixing frame main body; grooves are fixedly formed in two sides of the two clamping grooves; and movable plates are arranged in the grooves.

The invention relates to the technical field of treadmill plate machining, and discloses a treadmill plate machining device which comprises a machining platform, a cutting platform is arranged at the top of the machining platform, an adjusting groove is formed in the center of the upper wall face of the cutting platform, two corresponding limiting through holes are formed in the inner wall face of the adjusting groove, and a positioning groove is formed between the two limiting through holes. According to the device, by arranging the positioning inserting holes and the pressure plate, when a treadmill plate of a large structure is clamped and fixed, the distance between the two adjusting sliding plates is adjusted, and the adjusting sliding plates are arranged on the left side and the right side of the adjusting groove and are of a plate-shaped structure of an L-shaped structure; the four pressure plates are used for carrying out partitioned extrusion on the treadmill plates, so that the treadmill plates of different specifications can be well fixed when being clamped and fixed, and meanwhile, the device is more convenient to clean garbage generated in the cutting process.

The invention discloses a positioning safety device for medicine cold chain logistics and a positioning method of the positioning safety device. The positioning safety device comprises a seat plate, abottom roller, a horizontal spring, a safety cover plate and a cork top plate. A push plate is arranged on the outer side of the seat plate. A second working plate is in meshed connection with a first transfer gear. A second transfer gear is in meshed connection with a fixed gear. The fixed gear is welded and fixed to an inner threaded barrel. The inner threaded barrel is connected with the seatplate through a bearing seat. An inner side threaded hole of the inner threaded barrel is connected with the bottom of a threaded rod. According to the positioning safety device for the medicine coldchain logistics and the positioning method of the positioning safety device, the novel structural design is adopted, so that a glass medicine bottle can be stably positioned in the horizontal direction and the vertical direction and is protected against being damaged due to shaking and collision in the transportation process; and a safety structure is designed, so that a positioning structure canstill work normally when the device is overturned integrally, and the integrity of the glass medicine bottle is guaranteed.

The invention discloses a socket with a tapping function, which comprises a socket body. The socket body is provided with a plurality of jacks and USB interfaces. Copper wires used for electrificationare arranged in the jacks. The socket body comprises a first socket and a second socket. A storage box is arranged in the first socket; a fixed column is fixedly arranged in the center of the storagebox; a coil spring is arranged at the periphery of the fixed column; a rotating wheel is arranged at the periphery of the coil spring; a stay wire is wound on the periphery of the rotating wheel, suckers are arranged on the lower surfaces of the first socket and the second socket, a hanging handle used for hanging is arranged at the left end of the socket body, a connecting wire used for power transmission is arranged at the right end of the socket body, a protruding part is arranged at the left end of the second socket, a groove is formed in the right end of the second socket, and the protruding part is matched with the groove. According to the socket with the tapping function, the length distance between the second socket and the first socket can be freely adjusted, and convenience is provided for the life of people.

The invention relates to the field of bamboo tube machining, and discloses a roller clamping type bamboo tube slicer. The slicer comprises a rack, a conveying device, at least one clamping device, a sectioning device and a controller; the conveying device is arranged on the rack, multiple evenly-distributed supporting frame sets are arranged on the conveying device, bamboo tubes are placed on the supporting frame sets, the multiple clamping devices are evenly arranged on the rack in the conveying direction of the conveying device, each clamping device comprises a lifting device and a rotating device, the lifting devices are located on the lower sides of the supporting frame sets, the rotating devices are arranged on the upper sides of the supporting frame sets, the lifting devices are used for lifting the bamboo tubes on the supporting frame sets, the rotating devices are used for enabling the clamped bamboo tubes to rotate and are matched with induction positioning devices to measure the perimeters of the bamboo tubes, the controller is connected with a power source, and the controller is electrically connected with the conveying device, the lifting devices, the rotating devices, the induction positioning devices and the sectioning device. The bamboo tube slicer can automatically slice the bamboo tubes, is high in production efficiency and saves manpower.

A folding table with a pop-up cross beam comprises a tabletop formed by hinging two planar table boards, folding table legs, a barrier board and a rotary inserting pipe. Chair leg containing grooves matched with the folding table legs are formed in the undersurface of each planar table board, a rotary inserting pipe mounting groove is formed in the bottom of the planar table board, mounting holes are formed in the end face of each chair leg containing groove, locking holes are symmetrically formed in two sides of each chair leg containing groove, convex points are arranged at positions close to the bottom end of each chair leg containing groove, and mounting columns matched with the mounting holes are distributed at the peripheral edge of the barrier board; each folding table leg comprises a hinging column, a table leg outer sleeve, a table leg inner sleeve with a trapezoidal groove, a rotary elastic rod rotatably mounted in the trapezoidal groove and an elastic rod spring mounted between the rotary elastic rod and the trapezoidal groove, a round groove for containing the corresponding elastic rod spring is formed in each trapezoidal groove, each hinging column is hinged to the head of the corresponding table leg inner sleeve, and each table leg inner sleeve is arranged in the corresponding table leg outer sleeve in a sleeved manner. Pressure bearing capacity of the tabletop is improved greatly, and the folding table is attractive and elegant in appearance.

The invention provides a welding fixing frame for an interface frame cable connector. The welding fixing frame comprises two supporting legs, two locking nails, a welding frame, a clamp main body, a link rod, a spring, a baffle plate, a sliding clamp and a locking bolt, wherein the welding frame is a rectangular frame; the two supporting legs are fixed to the two ends of the bottom of the weldingframe by locking nails; the clamp main body is fixed to the center of the top end of the welding frame; a sliding through slot is formed in the side surface of the clamp main body; a locking screw hole which is connected to the sliding through slot is formed in the top of the clamping main body; the sliding clamp comprises a sliding part and a clamping part; the baffle plate is used for covering the entrance of one side of the sliding through slot; the sliding part extends into the sliding through slot from the entrance of the other side of the sliding through slot; the link rod passes throughthe spring and a through hole of the baffle plate and is connected to the sliding part; the clamping part and the welding frame are matched to clamp the connector; and the locking bolt extends into the locking screw hole to compress the sliding clamp. When the welding fixing frame is used, the connector does not move easily, and an operator can choose the best welding angle for welding; and the welding fixing frame greatly improves the production efficiency and reduces the possibility of dry joint and false welding.

The invention discloses a preparation method for papaya wine. The preparation method includes the steps: S1, taking papaya and grape, triturating the papaya and the grape together, heating in water bath, then adding cooked corn flour, purified water and distiller's yeast, and then fermenting for 18-24 h at the temperature of 30-35 DEG C, to obtain a primary fermentation product; S2, according to an order of laying one equal part of the primary fermentation product and then laying a sugarcane row, putting all the primary fermentation product in a fermentation tank, carrying out sealed fermentation for 5-10 days at the temperature of 28-32 DEG C, to obtain a secondary fermentation product; and S3, taking out the secondary fermentation product, filtering to obtain a fermentation liquid, carrying out sealed fermentation of the fermentation liquid for 15-25 days at the temperature of 20-27 DEG C, filtering to obtain a filtrate, adding papain to the filtrate, then carrying out sealed fermentation for 20-30 days at the temperature of 15-19 DEG C, and filtering to obtain the papaya wine. The preparation method reduces the content of total sulfur dioxide residual in the papaya wine; and the papaya wine has the efficacies of maintaining beauty, keeping young, improving sleeping and delaying senescence.

The invention discloses an easily assembled quick coupling which comprises a outer screw nut, a pivot and an outer sleeve, wherein the two ends of the pivot are a combining end and a positioning end; the combination end stretches into the outer sleeve, and an elastic element is arranged between the combining end and the outer sleeve; the outer sleeve can slide up and down along the pivot; an outer sleeve spring used for supporting the outer sleeve is arranged between the outer sleeve and the pivot; the positioning end is connected with the outer screw nut; a joint valve element is mounted in the cavity of the pivot in a sliding manner; a sealing element is arranged between the joint valve element and the pivot, and a valve element spring used for supporting the valve element is arranged between the valve element and the outer screw nut; a sloping pin hole is formed in the upper part of the pivot; a joint pin used for fixing a core insert which is matched with the easily assembled quick coupling is installed in the pin hole; one end of the joint pin is propped against the elastic element and the other end of the joint pin stretches out of the pin hole. The easily assembled quick coupling utilizes the pyramidal joint pin instead of steel balls used for fixing the core insert in the prior art and is convenient to assemble and high in production efficiency.

The invention discloses an aviation maintenance illuminating device and a using method thereof. The device comprises a shell body, a driving device is fixedly connected with the shell body, and a turntable is arranged on the shell body; the output end of the driving device is connected with the lower end surface of the turntable, and the driving device is used for driving the turntable to rotate;a joining block is arranged on the upper end surface of the turntable, a first illuminating lamp is arranged on one side of the joining block, a pulling rod is hinged to the portion, close to the first illuminating lamp, of the joining block, and a second illuminating lamp is arranged at the end, away from the joining block, of the pulling rod; a fixed rod is arranged on the upper surface of the shell body, and a binding belt sleeves the outer side of the fixed rod; the binding belt is connected with a limit block, and the inside of the limit block is connected with an illuminating lamp. The device can meet the illuminating requirements of different needs, and is high in practicability and capable of providing enough light sources for parts needing to be maintained and ensuring enough light sources required by maintenance.

The invention belongs to the technical field of medical equipment, and specifically discloses an oxygen tube fixing device for a tracheotomy patient. The fixing device comprises a hose body. One end of the hose body is a wrapping portion for wrapping an oxygen tube, the other end is a fixing portion fixedly disposed on a tracheotomy inner tube in the sleeve mode, and a through hole for the oxygentube to pass is disposed between the wrapping portion and the fixing portion on the hose body. Compared with the prior art, the oxygen tube and the tracheotomy inner tube can be fixedly connected firmly. On one hand, the position of the oxygen tube is not changed; on the other hand, the oxygen tube does not fall off when a patient coughs and turns the body. At the same time, when the tracheotomy inner tube and the oxygen tube need replacement, the fixing device can separate the oxygen tube and the tracheotomy inner tube quickly and simply.

The invention provides an assembly type light-weight partition wall plate. The assembly type light-weight partition wall plate comprises wall plates, pull plates, pull rods, sleeve cylinders, top rods, a bracket and rollers, wherein the two wall plates are mutually engaged; four or more pull plates are symmetrically arranged on the wall plates; two or more pull rods penetrate through the pull plates on the two wall plates; the multiple top rods are arranged in the wall plates; each sleeve cylinder respectively sleeves the corresponding top rod; the multiple brackets are fixedly arranged on thetop rods; each bracket is rotationally connected with the corresponding roller. The assembly type light-weight partition wall plate has the advantages that by rotating each sleeve cylinder on the corresponding top rod, each sleeve cylinder is in contact with the installation surface of the installation wall body; under the condition of multiple-point support of the top rods, the easiness in displacement of the wall body at the bottom surface is avoided in the grouting process; by arranging the pull rods, the engaged wall plates are fixed, the support force is provided between the wall plates,and the assembled wall plates are more stable.

The invention provides an assembly type upright pillar module for a building. The assembly type upright pillar module comprises a square pillar body, an abutting-joint base and a concreting auxiliarydevice. The square pillar body comprises a reinforcement cage skeleton and concrete, the abutting-joint base is arranged in the concrete on the lower portion of the square pillar body, and the abutting-joint base comprises a supporting bottom plate. The concreting auxiliary device comprises a concreting sealing press plate assembly, two threaded rods are arranged on a connecting plate, and the concreting sealing press plate assembly can be connected with the concrete of the square pillar body through the threaded rods. A sleeve in the upright pillar module is directly fixed to the supporting bottom plate, therefore, when the upright pillar module is prefabricated and concreted, displacement of the sleeve cannot be caused, and later direct connection of the sleeve with reinforcing steel bars on a building foundation is facilitated. After the upright pillar module is in abutting joint with the building foundation, it can be successfully achieved that the joints between the upright pillarmodule and the building foundation are sealed through the concreting auxiliary device, and the smooth progress of subsequent concreting is facilitated.

The invention discloses a movable rack for a fetal heart monitor used for the gynecology department. The movable rack comprises support posts, a push handle bracket, a baffle plate and a table top, wherein sliding wheel brackets are welded to the bottom ends of the support posts, sliding wheels are rotatably mounted below the sliding wheel brackets, the table top is welded to the top ends of the support posts, a wire placing hole is formed in one side of a monitor placing groove, a drawer framework is welded to the surface of the bottom end of the table top, hinges are mounted on the end facesof the front side of the table top, the baffle plate is rotatably mounted on the table top, a protection cover is welded to the top of the table top, the push handle bracket is welded to the end faceof one side of the table top, a push handle rotation shaft is movably mounted at one end of the push handle bracket, the push handle bracket is rotatably provided with a push handle through the pushhandle rotation shaft, insertion pin limiting blocks and an insertion pin fixing pipe are welded to the surface of the baffle plate, insertion pin holes are welded to two sides of the protection cover, and an insertion pin is mounted between the insertion pin fixing pipe and the insertion pin holes in a penetrating manner. The movable rack has the advantages that the potential safety hazards caused by walking of pregnant women are eliminated, and time is saved.