91results about How to "Achieve opening" patented technology

The embodiment of the invention provides a wire repairing mechanism installed on a live working robot and the robot. A first worm is driven by a first motor to rotate, a first worm gear meshed with left-handed helical teeth of the first worm gear and a second worm gear meshed with right-handed helical teeth of the first worm are driven to synchronously rotate in opposite directions, the first worm gear drives a first wire clamping part to act synchronously through a first transmission shaft, the second worm gear drives a second wire clamping part to act synchronously and reversely through a second transmission shaft, and opening and closing of the first wire clamping part and the second wire clamping part are achieved, so that a repairing sheet placed on the wire clamping parts of the first and second wire clamping parts wraps a wire, repairing work of a broken strand of the wire is completed, and the technical problem that most of power transmission lines in China pass through fields such as hills and mountains, and accordingly manual repair needs large workloads and is dangerous when the wire breaking phenomenon occurs is solved.

The invention discloses a plate feeding device and method. The plate feeding device is characterized by comprising a mechanical gripper, a lifting platform, conveying belts and an operating platform;the mechanical gripper is arranged on one side surface of the lifting platform and comprises an adsorption device and a shaking device; the adsorption device comprises air vents and two adsorption plates; the two adsorption plates are arranged in parallel and are provided with air cylinders for driving; the air cylinders of the two adsorption plates are independent of each other; the air vents areformed in the adsorption plates; the shaking times and the shaking time of the shaking device are set through the operating platform; the lifting platform comprises a stopping device; the stopping device is arranged between the lifting platform and a processing conveying belt and comprises supporting feet, a rubber plate and a stopping roller; the rubber plate is arranged between the supporting feet; the stopping roller is arranged between the supporting feet; and the operating platform is electrically connected with the mechanical gripper, the lifting platform and the conveying belts. By theaid of the plate feeding device and method, two or more plates can be prevented from being adsorbed.

The invention provides a panel loading device and method. The loading device is characterized by including a mechanical gripper, a lifting platform, a conveyor belt and an operation platform, whereinthe mechanical gripper is arranged on the side surface of the lifting platform, and includes an adsorption device and a shaking device; the adsorption device includes exhaust ports and two adsorptionplates arranged in parallel and driven by independent air cylinders; the exhaust ports are arranged at the adsorption plates; the shaking frequency and time are set through the operation platform; thelifting platform includes a blocking device arranged between the lifting platform and a machining conveyor belt, and including supporting feet, a rubber slab and blocking rolling wheels; the rubber slab is arranged among the supporting feet; the blocking rolling wheels are arranged among the supporting feet; the operation platform is electrically connected with the mechanical gripper, the liftingplatform and the conveyor belt. The panel loading device can avoid adsorption of two or more panels.

The invention provides an industrial detonator boxing manipulator. The horizontal cylinder bracket, slide rail and shift fork bracket in the mechanism are fixed on the frame, the horizontal cylinder is installed on the horizontal cylinder bracket, and the horizontal moving plate is driven by a push plate along the The slide rail moves, the lifting cylinder A bracket is installed on the lateral moving plate, the lifting cylinder A is installed on the lifting cylinder A bracket, and its front end is connected with the lifting cylinder B bracket, and the lifting cylinder B is installed on the lifting cylinder B bracket, and its front end is passed through the pendulum. The cylinder mounting plate is connected with the swing cylinder to realize the lifting and rotation of the detonator; the upper end of the magnet box is connected with the swing cylinder, and the magnet lifting cylinder is installed in the magnet box, and is connected with the magnet through the magnet mounting plate to realize the grasping of the detonator; The air cylinder is installed on the shift fork bracket, the front end of which is installed with a shift fork opening plate, the upper end of the shift fork is installed on the shift fork support, and the lower end is placed in the sliding groove on the shift fork opening plate, so as to realize the expansion of the tongue of the carton and facilitate the installation. box.

The invention discloses a biped semi-passive split upper body walking device. The biped semi-passive split upper body walking device comprises a hip and two leg parts, wherein the hip comprises a hip balancing plate and supports, wherein a vertical rotating shaft is arranged on each support and is rotationally matched and connected with the hip balancing plate; vertical plates are separately arranged at the front ends and the rear ends of the supports; a side moving plate is arranged between every two vertical plates; horizontal rotating shafts I which are coaxial are arranged on the front sides and the rear sides of the side moving plates separately and are rotationally matched and connected with the corresponding vertical plates; the leg parts comprise thighs and shanks; the thighs are arranged on the side moving plates in a rotational fit manner; a front-back swing driving mechanism is arranged on each side moving plate; leg opening driving mechanisms for driving the two thighs to do synchronous opening motion in the deviating direction or a synchronous closing motion towards the opposite direction are arranged between the hip balancing plate and the side moving plates; the thighs are connected with the shanks in a hinging manner; in addition, semi-passive knee joint mechanisms are arranged between the thighs and the shanks; and hip twisting mechanisms for driving the two supports to synchronously rotate towards the opposite directions and further driving the hip to twist are arranged between the hip balancing plate and the supports.

The invention discloses rotary-blade type high-branch fruit-picking scissors. According to the invention, a fruit-receiving inner cylinder and a rotating cylinder capable of rotating around the fruit-receiving inner cylinder in a clockwise or counter clockwise direction and opening and closing blades are arranged below a semicircular blade 1 and a semicircular blade 2, wherein the length of the rotating cylinder is 100 to 400 cm, and the fruit-receiving inner cylinder is 10 to 15 cm longer than the rotating cylinder; the fruit-receiving inner cylinder and the rotating cylinder are in fixed arrangement through an upper bearing, a middle bearing and a lower bearing; a rivet 1 and a rivet 2 symmetrically arranged on the upper end face of the fruit-receiving inner cylinder are respectively riveted with a rivet hole 1 and a rivet hole 2; a pin shaft 1 and a pin shaft 2 symmetrically arranged on the end face of the rotating cylinder respectively penetrate through a straight-line slot hole 1 and a straight-line slot hole 2; a blade edge 1 and a blade edge 2 are in opposite arrangement; and the bottom part of the fruit-receiving cylinder is provided with a fruit-unloading opening, a circular cylinder cover, a compression spring, and a silicon rubber plate or a rubber supporting plate. The rotary-blade type high-branch fruit-picking scissors provided by the invention can receive and store fruits, improve fruit-picking quality and fruit-picking efficiency, is suitable for picking of fruits on tall trees, and is convenient and safe.

The invention discloses a humanoid mechanical finger structure based on shaft drive transmission. The structure comprises a first knuckle, a second knuckle 28, a third knuckle and a base, each knuckle achieves linkage with the prior knuckle through the corresponding coordination of different crown gears and different straight gears, power driving the knuckles to rotate is transmitted forwards step by step from a direct current motor in a shaft drive transmission mode, and bending and stretching of a mechanical finger are achieved. In the humanoid mechanical finger structure based on the shaft drive transmission, the shaft drive transmission is adopted to transmit the power, fast movement of the mechanical finger can be achieved, and it is only required that a rotation motor drives the mechanical finger.

The invention relates to an expanding-type large head anchor rod. The expanding-type large head anchor rod comprises a rod body and a bullet-shaped hollow expanding portion arranged at the front end of the rod body; the expanding portion is composed of a cylindrical portion and a cone portion; one end of the cylindrical portion is fixedly connected with the front end of the rod body; and the coneportion is formed by enclosing a plurality of fan-shaped single pieces. The fan-shaped single pieces are rotatably connected with the other end of the cylindrical portion; a bullet-shaped pushing block is arranged in the cylindrical portion in a sealing and sliding sleeved model and an explosive cavity is formed by enclosing the pushing block and the cylindrical portion; and the explosive cavity is filled with gunpowder. The gunpowder is detonated by a lead which extends out of the rear end of the rod body; protrusions are arranged on the inner side faces of the fan-shaped single pieces; the cone portion is formed into a claw-like shape by external supporting and extruding of the protrusions by the pushing block after the gunpowder is detonated; and the cylindrical portion is progressivelyreduced in diameter from one end to the other end connected with the rod body.

The invention discloses an intraperitoneal magnetic anchoring and clamping surgical robot for minimally invasive surgery, relates to a robot for minimally invasive surgery and aims at solving the problems that a surgical doctor directly holds a surgical instrument with the hand in the existing abdominal minimally invasive surgical process so that the surgical precision and quality are further affected, and an existing surgical robot is high in cost, large in occupied volume and relatively poor in movement freedom. The intraperitoneal magnetic anchoring and clamping surgical robot comprises a mechanical structural unit and an electric control unit, wherein the mechanical structural unit comprises a housing, a first worm, a second worm, a worm gear, a rack, a permanent magnet, a suspension base and a clamping mechanism; the clamping mechanism comprises a third motor, a screw pair, a first connecting rod, a second connecting rod, a third connecting rod and pliers; the electric control unit comprises a first motor, a second motor, a control circuit module and a wireless transceiving module; and the control circuit module and the wireless transceiving module are embedded on the inner side wall of the housing, and the first worm, the second worm, the worm gear, the rack, the first motor, the second motor and the clamping mechanism are arranged in the housing. The intraperitoneal magnetic anchoring and clamping surgical robot disclosed by the invention is used for minimally invasive surgery.

The invention discloses a control method and device for an electronic expansion valve, and electronic equipment. The control method for the electronic expansion valve comprises the following steps: acquiring the actual value of an exhaust pressure at the outlet of a compressor; subtracting the actual value of the exhaust pressure at the outlet of the compressor by the given value of the exhaust pressure at the outlet of the compressor to obtain an error signal; adjusting the error signal to obtain an adjustment signal; and controlling the opening degree of the electronic expansion valve to stabilize the opening degree of the electronic expansion valve in a set range according to the adjustment signal. According to the embodiment of the invention, the opening degree of the electronic expansion valve is adjusted to be stabilized in the set range according to the error signal between the given value of the exhaust pressure at the outlet of the compressor and the acquired actual value of the exhaust pressure at the outlet of the compressor, so that accurate control for the opening degree of the electronic expansion valve is realized.

A device for connecting or disconnecting cannula to or from a tube. The connection is uncomplicted, quick, safe and provides reproducible conditions in a surgical procedure for connecting to a blood pump that assists the heart or replaces the heart. A nipple ( 4 ) is formed on the tube ( 5 ) which is inserted into the cannula ( 7 ). A rotatable claw ring ( 1 ), which is arranged on a cannula end ( 71 ) for displacement to a stop ( 2, 62 ), can be rotatably joined with a locking ring ( 3 ) which is secured to a tube end ( 51 ) by axial movement and latching engagement with the locking ring ( 3 ). The connection is releasable by rotating the claw ring ( 1 ) and pulling the claw ring ( 1 ) and the cannula apart in an axial direction.

The invention provides an interesting rehabilitation training machine. The machine comprises a bottom plate, a rectangular base plate, a fixing frame and a base, wherein the rectangular base plate, the fixing frame and the base are sequentially arranged on the bottom plate; a first parallel four-bar mechanism and a first telescopic cylinder are arranged on the rectangular base plate, the first parallel four-bar mechanism is connected with the first telescopic cylinder through a first telescopic rod, the first parallel four-bar mechanism comprises horizontal connecting rods, and the two horizontal connecting rods are respectively and integrally connected with a vertical connecting rod; a second parallel four-bar mechanism is arranged through a first connecting rod and a second connecting rod, and the second parallel four-bar mechanism is provided with a manipulator. The interesting limb rehabilitation training machine is provided, limb rehabilitation training of limb patients is facilitated, the training enthusiasm of the patients is improved, and the limb rehabilitation effect of the patients is improved.

The invention belongs to the technical field of cerebral nerve and blood vessel thrombus extraction, and specifically relates to a cerebral nerve vessel thrombus taking-out device that comprises an outer protective tube, a middle adjusting guide wire and a thrombus extractor body. The outer wall of the middle adjusting guide wire is sleeved with the outer protection tube; the two ends of the middle adjusting guide wire extend to the two sides of the outer protection tube; one end of the middle adjusting guide wire is connected with a thrombus extractor; the end, away from the thrombus extractor, of the outer protection tube is connected with an adjusting assembly, the thrombus extractor comprises a movable connecting base and a fixed connecting base, through the arrangement of the adjusting assembly, the relative position between the outer protection tube and the middle adjusting guide wire can be adjusted conveniently from the outside, and therefore the thrombus extractor can be adjusted to be unfolded and folded, and operation is convenient. The thrombus extractor enables the thrombus extraction wire to be unfolded and folded through the effect of adjusting the position between the movable connecting base and the fixed connecting base, and therefore the adjusting effect of overall expansion or contraction of the thrombus extractor is achieved.

The invention discloses a double-kink machine used for packaging and a food packaging line. The double-kink machine used for packaging is used for conducting kinking on packaging paper of material on a material receiving device, and comprises a first kink device and a second kink device, wherein the first kink device and the second kink device are oppositely arranged and located on the two sides of the material receiving device respectively, and the first kink device and the second kink device respectively comprise a kink transmission device and a plurality of kink grippers which are arranged on the kink transmission device and can be opened and closed. The double-kink machine overcomes the defect that due to the fact that an existing kink machine can conduct kink operation on only one piece of food at the same time, efficiency is low, and the double-kink machine used for packaging and the food packaging line can greatly improve efficiency.

The invention provides a bracket of a centerless grinding machine. The bracket comprises a bracket seat body, jaws movably connected to the bracket seat body, a supporting plate fixed to the bracket seat body and guide plates connected to the jaws. At least one set of jaws is arranged, and every two jaws form a set. Grooves for the guide plates to be clamped are formed in the inner sides of the jaws. The grooves are directly machined in the inner sides of the jaws or are formed in a combined manner through other parts. After the guide plates are clamped in the grooves, the grooves are providedwith clearances for adjusting the angles of the guide plates. First adjusting parts used for adjusting the angles of the guide plates are arranged on the jaws. By means of the bracket of the centerless grinding machine, the grooves used for clamping connection of the guide plates are designed in the upper portions of the jaws, the guide plates are tightly attached to the planes of the jaws, and the guide plates are locked by guide plate pressing blocks through screws. Meanwhile, the first adjusting parts (guide plate fine adjustment screws) at two positions of the back faces of the jaws can be screwed in and screwed so as to adjust the work planes of the guide plates, and the work planes of the guide plates can be parallel to the working busbar of the bracket. By means of the design, thepositioning rigidity of the guide plates is greatly improved, and the micron order precision can be achieved through adjustment.

The invention relates to a mussel cooking device. The cooking device comprises a cooking box, wherein an oblique transfer belt is arranged in the cooking box and comprises multiple unit strips parallelly arranged at intervals, two closed ends of the oblique transfer belt are both provided with driving rollers, the lower-end side of the oblique transfer belt is located under a discharging port of agrading device, distributing strips are arranged in the peripheral directions of the unit strips at intervals, the distributing strips of the multiple unit strips are located on the same straight line, containing grooves for containing mussels are formed among the adjacent distributing strips, a material moving mechanism is arranged on the oblique transfer belt, and water is continuously boiled in the cooking box in advance, so that mussels are immersed in the cooking box on the oblique transfer belt, and initial mussel cooking is achieved. In addition, by utilizing the unit strips, the oblique transfer belt forms gaps for boiling water to pass so as to ensure that boiling water is fully in contact with the mussels, movement of transferred mussels is achieved through cooperation with thematerial moving mechanism so as to further achieve mussel turning, and smooth mussel opening is ensured.

The invention provides a jar-planted plant transplanting machine with a flower jar carrying function for a garden. The transplanting machine comprises a movable transplanting main machine, a telescopic cantilever extending out of the transplanting main machine and a transplanting mechanism arranged at the telescopic end of the telescopic cantilever; and the transplanting mechanism comprises three groups of digging shovel assemblies which are uniformly distributed on the circumference and a transplanting range adjusting assembly which is used for adjusting the distance between the digging shovel assemblies and the circle center. The transplanting machine is used for transplanting aquatic plants according to the actual situation of seedling culture of the aquatic plants in a water jar.

The invention belongs to the technical field of lactation promotion, and specifically relates to a manual highly-bionic lactation promoting and sucking device comprising a lactagogue body, wherein a lactagogue chamber of which one end is open is arranged in the lactagogue body; a connected massage cover is arranged at the opening of the lactagogue chamber; the massage cover is internally providedwith a connected lactation promoting film; the middle part of the lactation promoting film in the lactagogue chamber is provided with a suction nozzle sleeve which is communicated with the lactation promoting film; the suction nozzle sleeve is formed by mutually connecting a plurality of openable valves; the lactagogue chamber is filled with a massage liquid, and the lactagogue body is provided with a driving mechanism for driving the massage liquid to be retracted and released. A milk taking pipe is arranged in the lactagogue chamber, a milk collecting one-way valve is arranged in the milk taking pipe, the middle of the lactation promoting film is communicated with the milk taking pipe, and a connected milk storage bottle is arranged at the bottom of the lactagogue body; the bottom of themilk taking pipe penetrates through the bottom of the lactagogue chamber to be communicated with the milk storage bottle, and the upper end of the milk taking pipe is communicated with the bottom ofthe suction nozzle sleeve.

The invention discloses a product positioning and clamping device which comprises a left positioning and clamping block, a right positioning and clamping block, a left cross rod, a right cross rod, a left slanting rod, a right slanting rod and a clamping cylinder, wherein the left positioning and clamping block and the right positioning and clamping block, the left cross rod and the right cross rod and the left slanting rod and the right slanting rod are symmetrically arranged respectively. The left positioning and clamping block and the right positioning and clamping block are fixed at one opposite ends of the left cross rod and the right cross rod respectively. The centers of the left cross rod and the right cross rod are symmetrically provided with slanting holes capable of containing the left slanting rod and the right slanting rod respectively. One ends of the left slanting rod and the right slanting rod are symmetrically sleeved in the two slanting holes in a penetrating mode, and the other ends of the left slanting rod and the right slanting rod are fixedly connected with a piston rod of the clamping cylinder respectively. The product positioning and clamping device is favorable for the clamping cylinder, the slanting rods and the cross rods to achieve opening and closing of the two positioning and clamping blocks, accordingly achieves opening and clamping operations of a clamp, is simple and compact in structure and high in accuracy, and can meet high-end accuracy requirements.

The invention discloses a server cabinet. The server cabinet disclosed by the present invention comprises a bottom plate, a vertical plate, a first cover body and a second cover body, the vertical plate is slidably connected to the bottom plate, the first cover body and the second cover body are movably connected to the bottom plate through first connecting rods, and the first cover body and the second cover body are movably connected to the vertical plate through second connecting rods, and a supporting plate for placing a server is arranged on the vertical plate; and the first cover body and the second cover body are opened and closed by adjusting the vertical plate, and when the first cover body and the second cover body are opened, the supporting plate extends out of the bottom plate and is used for placing the server. The server cabinet is convenient and fast to operate; the server is very convenient to place; and a plurality of servers can be placed at one time, so that the installation efficiency of the servers in a server room can be improved, and the working intensity of workers is reduced.

The present invention provides a wireless charging electric car mobile phone holder. The wireless charging electric car mobile phone holder comprises a front casing, a rear casing, a left clamping arm, a right clamping arm, a lower blocking strip, a clamp, a drive unit, a mainboard, a charging coil, an inductor and a touch key; the front casing is connected with the rear casing to form a holder body, the clamp is arranged on the rear casing, the lower blocking strip is arranged at the lower portion of the front casing, the tail ends of the left clamping arm and the right clamping arm stretch into the holder body, the holding sections of the left clamping arm and the right clamping arm are configured to clamp the mobile phone, the mainboard is arranged in the holder body, the drive unit isarranged in the holder body and is electrically connected with the mainboard, the drive unit is cooperated with the tail ends of the left clamping arm and the right clamping arm, the left clamping armand the right clamping arm perform motion in the opposite directions under the drive of the drive unit, the charging coil is arranged in the holder body and is electrically connected with the mainboard, the inductor is arranged on the end face of the front casing and is in signal connection with the mainboard, the touch key is arranged on the upper blocking strip and is in signal connection withthe mainboard, and the holder body is provided with a charging port electrically connected with the mainboard.

The invention relates to the technical field of welding device, and discloses a high-precision lithium battery spot welding device. The high-precision lithium battery spot welding device comprises a workbench, wherein a sliding groove is formed in the top of the workbench; a third threaded rod is rotationally connected to the interior of the sliding groove; a first supporting frame is in threadedconnection with the surface of the third threaded rod; the bottom of the first supporting frame is in sliding connection with the interior of the sliding groove; a rotating disc is fixedly connected to the right end of the third threaded rod; and a rotating rod is fixedly connected to the right side of the rotating disc. The rotating rod rotates, the rotating rod rotates to drive the rotating discto rotate, then the third threaded rod rotates in the sliding groove, the third threaded rod rotates to enable the first supporting frame to move in the sliding groove, when the first supporting frame moves to the proper position, a fixing bolt is rotated, then the position of the first supporting frame is fixed, then workers can adjust the position of the supporting frame, and welding of a lithium battery is more convenient and faster.

The invention discloses an artificial insemination bar. The artificial insemination bar comprises a semen collecting container, a shell for simulating the shape of a penis and an inner core arranged in the shell. Two wings for driving the shell to enter the orificium vaginae is arranged at one end of the shell, a positioning device for fixing the semen collecting container is arranged between the two wings, a pulling handle for driving the inner core to slide relative to the shell to allow the two wings to be opened or closed is arranged at one ends, far away from the wings, of the inner core, a catapulting device for catapulting the positioning device when the two wings are opened to allow the semen collecting container to be adsorbed to the uterine neck opening is connected on the inner core, and a catapulting triggering mechanism for triggering the catapulting device is arranged in the shell. The artificial insemination bar is operated without specialist physicians, and can be successfully completed between couples; as collected semen can be directly delivered to the uterine neck opening through the artificial insemination bar, it is avoided that sperms are killed when moving in the vagina, the survival rate of sperms is effectively increased, and the pregnancy success rate is greatly increased.

The invention relates to a spring type portable mechanical arm for helping disabled people. The mechanical arm comprises a mounting part and a clamping jaw; the mounting part is arranged on an arm of a user, is provided with a driving device for driving the clamping claw to be opened or closed and is a fixed sleeve which is arranged at the rear end of a forearm; the fixed sleeve is cylindrical and surrounds the forearm; the driving device comprises a movable sleeve and a linkage mechanism; the movable sleeve is rotationally arranged in the fixed sleeve and is arranged at the front end of the forearm; the clamping claw comprises claw bodies which are arranged in a pair; the claw bodies are rotationally arranged on the fixed sleeve and are provided with a linkage part for adjusting the rotation positions of the claw bodies; the linkage mechanism is arranged between the movable sleeve and the linkage part; when the movable sleeve is driven by the front end of the forearm to rotate relative to the fixed sleeve, the linkage mechanism enables the claw bodies to be separated; and when the movable sleeve does not apply the force to the front end of the forearm, the linkage mechanism enables the claw bodies to get close to each other. The invention provides the spring type portable mechanical arm for helping the disabled people. According to the mechanical arm, by adopting the scheme, the clamping jaw is driven to be opened or closed by utilizing the action of the arm, and the mechanical arm is particularly suitable for the disabled people without all fingers or palms on hands.

A tunnel type wood veneer drying production line comprises a hot blast stove, a tunnel type drying room body and a chain conveying device, the hot blast stove provides hot air, the chain conveying device conveys wood veneers, the chain conveying device comprises a machine frame, and a first driven shaft and a second driven shaft are installed at the two ends of the machine frame respectively. A first driven chain wheel and a second driven chain wheel are installed at the two ends of the first driven shaft and the two ends of the second driven shaft respectively, a driving shaft with small driving chain wheels at the two ends is installed on the upper portion or the lower portion in front of the first driven shaft, and the small driving chain wheels, the first driven chain wheels and the second driven chain wheels at the corresponding ends are connected in a closed-loop mode through plate type conveying chains. And an automatic clamp for clamping a wood veneer is arranged between chain plates corresponding to each section of chain of the two plate type conveying chains. According to the drying production line, the wood veneers can be vertically conveyed into the tunnel drying room to be dried, the plate type conveying chain circularly rotates in the tunnel drying room, discharging is conducted when the plate type conveying chain rotates to the inlet end, and continuous flow drying operation is achieved.

A six-arm roller centering device is applied to the field of pipeline robots and is characterized in that a left connection seat (2) and a right connection seat (3) are in threaded connection with two ends of a center shaft (1) respectively, and arm seats (4) are symmetrically arranged on the inner sides of the connection seats. A rectangular spring (5) is arranged in each arm seat (4), an end cover (6) and a push rod seat (7) are arranged at two ends of each rectangular spring (5) respectively, one side of each push rod seat (7) tightly presses a prism sleeve (8) which penetrates through the corresponding arm seat (4), left and right supporting arms (9) are hinged onto each sleeve (8), rollers (10) are mounted on the supporting arms (9) through first screws (11), three push rods on each push rod seat (7) contact with three supporting arms (9), and each arm seat (4) and the corresponding end cover (6) are fixed onto the central shaft (1) through a second screw (12). The six-arm roller centering device has the advantages of effectiveness in centering, simple structure, convenience in mounting and wide pipe diameter application range.

The invention provides a non-closed continuous lifting plunger drainage device and a non-closed continuous lifting plunger drainage construction method. The device is mainly composed of key parts suchas a fishing head, an upper ejector rod, an upper elastic block, a lower elastic block and a lower ejector rod which are sequentially connected from up to down, wherein the upper and lower elastic blocks are in a contracted state when a plunger is placed in a production pipe string, the outer diameter is small, when a gas well is in a normal production state, the plunger can still smoothly enterthe position of a locker, under the action of gravity and inertia, when the plunger descends to the position of the locker, a lower ejector rod of the plunger knocks against the locker, the upper andlower elastic blocks are made to expand to form sealing with an inner wall of the pipe string, the plunger under the action of the uplink pressure of a gas wellbore, non-closed gas well delivery is achieved, after the plunger is at the proper place, the elastic blocks are automatically opened to achieve the automatic lifting drainage technology. The device is advantaged in that continuous gas wellexploitation can be achieved, and gas well production efficiency is effectively improved.