441results about How to "Easy to fold and store" patented technology

The invention discloses an UHMWPE (Ultra High Molecular Weight Polyethylene Fiber) summer sleeping mat and a manufacture method thereof. The summer sleeping mat is of double-layer structure consisting of a surface layer and an inner layer. The surface layer has relatively large gaps among yarn and relatively large gaps among monofilaments, and is formed by UHMWPE filament yarn or arranging UHMWPE with common textile materials at intervals, or weaving UHMWPE with composite yarn with common textile materials as warps and wefts, and the UHMWPE content is not less than 50%. The inner layer is composed of common hydrophilic textile materials. The surface layer and the inner layer are formed by connecting the surface layer and the inner layer to a double-layer organization structure or replacing the surface layer and the inner layer with double-layer organization structure, or formed by sewing two single-layer fabrics into a whole. Folding strips are reserved by extracting warps and wefts in warp and weft directions, and the surface layer and the inner layer are subjected to antibacterial and anti-mosquito technology treatment. The summer sleeping mat has significant and durable cool contact feeling, is easy to fold and carry, light in weight, and dry enduringly, and has antibacterial and insect prevention functions.

The invention relates to a cradle head stabilizer, and particularly provides a stabilizer folding structure and a handheld stabilizer. The stabilizer folding structure is used for rotatably connectinga motor cabinet with a rocker arm to enable the motor cabinet and the rocker arm to have a first extending state and a second taking in state in the relative rotating process, and comprises an elastic piece and a buckling structure, wherein the elastic piece is used for exerting elastic force enabling the motor cabinet to be propped against the rocker arm; the buckling structure is arranged at the propping position of the motor cabinet and the rocker arm; and when the motor cabinet and the rocker arm are under the first state and the second state, the buckle structure is in the buckling stateto limit the relative rotation of the motor cabinet and the rocker arm, and when the motor cabinet and the rocker arm are under other state, the buckling structure is separated to enable the motor cabinet and the rocker arm to be in relative rotation. According to the stabilizer folding structure disclosed by the invention, the stabilizer is convenient to fold and take in, and the stabilizer folding structure is convenient for a user to use.

An air-ground amphibious dual-ring shape-shifting robot comprises an outer circular ring and an inner circular ring, wherein the inner circular ring is sleeved with the outer circular ring, and the two ends in the radial direction of the inner circular ring and the two ends in the radial direction of the outer circular ring are hinged to each other respectively to achieve rotating matching; the outer diameter surface of the outer circular ring is at least connected with an outer wheel rim capable of rotating in the axial direction of the outer circular ring in a sleeving mode, and the outer diameter surface of the inner circular ring is at least connected with an inner wheel rim capable of rotating in the axial direction of the inner circular ring in a sleeving mode; an included angle motor used for changing the relative folding angle between the outer circular ring and the inner circular ring, an outer ring motor used for being connected with the outer wheel rim and driving the outer wheel rim to rotate, an inner ring motor used for being connected with the inner wheel rim and driving the inner wheel rim to rotate and an electrical modulation module used for a model airplane are fixed in a ring of the inner circular ring, two flight control motors are fixed on the electrical modulation in the center axis direction of the ring of the inner circular ring, and the flight control motors are in driving connection with two rotor wings with opposite rotating directions. The air-ground amphibious dual-ring shape-shifting robot can automatically adapt to terrains in an all-dimensional mode in land traveling and can be folded to move in a narrow space; the direction of an inner circular ring air duct can be changed to adjust flight attitudes by folding, the torque of the two rotor wings can change the flight directions, and flight reconnoitre can be achieved in a narrower space.

The invention relates to a folding propeller for an above-water platform. The folding propeller comprises a beam, a fixing base, a fixing block, a motor rod and a propeller motor. The beam is positioned in the rear of the above-water platform, a fixing mechanism is arranged on the beam and can be connected with the fixing block, the fixing base is positioned on the inner side face of the beam and is connected with the fixing block through an overturning arm, the motor rod is connected to the fixing block through a movable rotating shaft and comprises an upper arm and a lower arm, a steering motor is arranged in the upper arm, the double-blade propeller motor is mounted at the tail end of the motor rod, and the lower arm is rotated by the steering motor, so that the direction of the propeller motor can be adjusted. When in a storage state, the folding propeller is folded to be stored in a chamber of the above-water platform; when in a working state, the folding propeller can be powered on to be in operation after the fixing block is overturned on the beam to be connected with the fixing mechanism, then the motor rod is overturned to be downward vertically and the propeller motor is adjusted to face the rear by the steering motor. The folding propeller for the above-water platform is easy in folding storage, convenient to operate, high in safety and particularly applicable to power-driven propelling of portable above-water platforms.

The invention discloses a UHMWPE (Ultra High Molecular Weight Poly Ethylene) fiber composite summer sleeping mat and a manufacturing method thereof. The summer sleeping mat comprises a mat surface layer, a sweat absorption layer and a mat bottom coating layer, wherein the mat surface layer is prepared from UHMWPE, or is prepared by arranging the UHMWPE and higher-water-absorption common textile materials at intervals or is prepared by using the UHMWPE and higher-water-absorption fiber composite yarns as warp and weft yarns, and is subjected to anti-bacterial and insect-preventing treatment; the sweat absorption layer is made of a high-water-absorption fabric and is arranged between the mat surface layer and the mat bottom coating layer; the mat bottom coating layer is a common hydrophilic fabric with certain abrasion resistance, is sewn in an edge coating manner, covers the sweat absorption layer and the mat surface layer and is sewn around the mat surface layer. The mat has an obvious and ensuring contact feeling of coolness, is easy to fold and carry, is light in weight, and has the anti-bacterial and insect-preventing functions; the mat surface is dry and comfortable for a long time.

The invention discloses a manufacturing method for a liquid conveying hose. The method comprises the steps that a cylindrical fabric layer is woven through a circular weaving machine, wherein the cylindrical fabric layer is of an independent plain weave structure, or twill weave structure or satin weave structure; the cylindrical fabric layer is dried; a flexible wire mesh is wound outside the cylindrical fabric layer; the structure obtained through the step (3) is coated with thermoplastic polyurethane after sized dicing and melting, so that an inner bond layer and an outer bond layer are formed, and the hose is manufactured. According to the hose, the flexible wire mesh is added, high liquid conveying pressure can be borne, and the conveying flow of the hose is further improved.

The invention provides a foldable three-wheel electric vehicle which is more scientific and reasonable in structure and more convenient and comfortable to use. A frame and a handlebar, which are designed based on the four-link mechanism principle, can be folded and unfolded, so that the three-wheel electric vehicle is suitable for different using occasions and users. The layout mode of two front wheels and one rear wheel effectively improve the side overturning preventing capability in turning of the three-wheel electric vehicle. The foldable three-wheel electric vehicle is convenient to fold and unfold, thereby having great practicability and great potential generalization performance.

The invention provides a multifunctional self-timer stick, comprising a bracket, a clamping device, and an auxiliary handle, wherein the top of bracket is rotatianlly connected with a connecting head;the clamping device is configured to clamp electronic equipment; the clamping device is movably connected with the connecting head; the auxiliary handle is hinged with the connecting head; a lock handle assembly is arranged between the connecting head and the auxiliary handle; and the lock handle assembly is used for fixing the holding position of the auxiliary handle relative to the connecting head in a locking state and enabling the auxiliary handle to rotate relative to the connecting head in an unlocking state. On the basis of supporting by the bracket, the auxiliary handle can be used bya user to change the position of electronic equipment such as a mobile phone on the clamping device, so the stability during the position change process is improved obviously, especially the motion stability when the electronic equipment needs to be rotated during panoramic shooting is improved; the self-timer stick is beneficial to improving the shooting quality, more beneficial to ergonomic design, prevents the hand and arm of the user from being sore or diseased, and promots health and user experience.

The invention provides a lamp post trash can and belongs to the technical field of trash cans. The lamp post trash can solves the problem that it is inconvenient to discard garbage at night. The lamp post trash can comprises a first clamping arm and a second clamping arm which are hinged to each other in a cross mode. The first clamping arm comprises a first clamping head and a first clamping rod, and the second clamping arm comprises a second clamping head and a second clamping rod. The first clamping rod and the second clamping rod are provided with a plurality of hooks respectively. The lamp post trash can further comprises a folding supporting plate, the supporting plate is connected between the first clamping rod and the second clamping rod, and an elastic part is arranged between the first clamping rod and the second clamping rod. When the first clamping rod and the second clamping rod are unfolded along a hinged part, the supporting plate can be unfolded to be of an arc-shaped structure. The supporting plate is further provided with a hole-shaped cup hole which is round after being unfolded along the supporting plate and is used for supporting a beverage cup. The first clamping head and the second clamping head are clamped on a lamp post of a street lamp, and then garbage bags are suspended on the hooks; the supporting plate can be unfolded to be of the arc-shaped structure; the supporting plate is provided with the cup hole, and accordingly a pedestrian can place the beverage cup that is not drunk up or foods that are not eaten up in the cup hole or on a bracket, so that a vagrant can pick the beverage cup or the foods conveniently.

The invention discloses a rock drill air-leg supporting device convenient to adjust an angle. The rock drill air-leg supporting device convenient to adjust the angle includes a rock drill main body, an upper connecting seat, a bottom rotating seat, a middle fixing rod, air-leg main bodies, installation pieces, first connecting shafts, connecting rods, a bottom installing plate, fixing claws and afixing bottom plate; a first fixing rod and a second fixing rod are arranged in the middle of the rock drill main body in a penetrating mode, and the top ends of the second fixing rod and the first fixing rod are correspondingly clamped with the a second limiting plate and a first limiting plate mutually, and the second limiting plate and the first limiting plate are further clamped with the two sides of the upper connecting seat mutually; and the bottom of a winding shaft is wound with a connecting wire, and a limiting block is installed at the top of the connecting wire. During the use, therock drill air-leg supporting device convenient to adjust the angle can not only facilitate the multi-angle adjustment work of the rock drill above the whole device, but also facilitate the angle fixing work after the adjustment work is completed, and the accurate drilling work of the rock drill is ensured.

The invention provides an aircraft and a foldable rotor arm thereof; the rotor arm is rotationally connected with a body main housing of the aircraft through a rotation unit, and the end of the rotation unit connected with the rotor arm is provided with a limiting retainer disc which is provided with a first retaining groove; the rotor arm is provided with a retaining component, and a working position of the rotor arm is locked and positioned when the retaining component mates with and locks to the first retaining groove. Compared with the prior art, the aircraft and the foldable rotor arm thereof provided herein are provided with simple-structure rotor arm retaining structure such that the rotor arm can be retained and positioned at different positions relative to the body main housing of the aircraft, folding of a multi-rotor aircraft is facilitated, and portability of the multi-rotor aircraft is improved.

The invention discloses a multifunctional body-building chair, and relates to the technical field of body-building equipment, in particular to a body-building chair with multifunction of sit-ups, leg motion, chest expanding motion, back massage and the like. The multifunctional body-building chair is realized by the following technical scheme that: a front supporting frame is hinged with a rear supporting frame to form an inverse Y shape; a space for arranging a backrest frame, a seat frame, thigh supporting frames and shank supporting frames is reserved in the inner middle part of the inverse Y shape; the backrest frame is moveably arranged in the rear supporting frame; the lower end of the backrest frame is hinged with the rear end of the seat frame; wheel bodies capable of autorotating are arranged in the inner middle part of the backrest frame; the surfaces of the wheel bodies form a backrest surface for people; and a pair of driving arms hinged with the front supporting frame is connected with the backrest frame through a pull rod hinged with the rear extending ends of the driving arms. The multifunctional body-building chair has a compact structure and multiple functions of rest, massage, motion and the like, is easy and convenient to manufacture, and meets the requirements of people on different functions. The multifunctional body-building chair has the advantages of high constitutive property, good stretching property among parts, convenience in folding and storage and contribution to storage and transportation.

The invention discloses a supporting device for tunnel construction. The supporting device comprises a base, a second adjusting ring and a mounting block. A supporting rod is arranged above the base,an adjusting rod is mounted on the inner side of the supporting rod, a limiting groove is formed in the inner side of the supporting rod, and a limiting rod is mounted on the outer side of the adjusting rod. The adjusting rod is connected with the supporting rod through the limiting rod and the limiting groove, a sleeve rod is mounted above the second adjusting ring, the sleeve rod is located on the outer side of the adjusting rod, a linkage rod is arranged below a supporting rod, and the linkage rod is connected with the supporting rod through a pin shaft. An inserting rod is mounted on a third adjusting ring, the inserting rod is connected with the inserting ring, and the inserting ring is located on the outer side of the supporting rod. The supporting device for tunnel construction canbe conveniently unfolded to be mounted, step-by-step manual welding or riveting is not needed, the mounting efficiency is improved, adjusting is convenient, the supporting device can be finely adjusted according to the specific condition of tunnel construction, and the stability of supporting is improved.

The invention relates to a folding conveyor belt. The folding conveyor belt comprises rollers, side wheels, ejecting pillars, columns, universal wheels, folding arms, fixed shafts, telescopic rods, side shafts, bolts, cross shafts and cross shaft holes. The universal wheels are arranged at the bottoms of the columns, the telescopic rods are mounted in the middle positions of the columns, the topsof the columns are separately connected to the upper and lower cross shafts, the rollers are mounted on the cross shafts in a sleeving mode, ejecting pillars are separately mounted on two sides of therollers, the side shafts are arranged on the tops of the ejecting pillars, the side shafts and the side wheels are in interference fitting connection, the cross shaft holes are formed in the two endsand the middle positions of the folding arms, two ends of the cross shafts penetrate the cross shaft holes, separately, the folding arms are separately mounted on the outer sides of the ejecting pillars, and the folding arms are connected to the upper and lower cross shafts in a staggered mode. The folding conveyor belt designed by the invention is convenient to operate, convenient to fold and store and high in practicality.

The invention discloses an intelligent dining table capable of being automatically cleaned. The table comprises a bottom plate, a box and a tabletop body, wherein the upper surface of the bottom plateis fixedly connected with a box body; table top bodies are hinged to the upper ends of the left and right side walls of the box body; a heating plate is arranged on the inner side of the tabletop body; the side wall of the box body is rotationally connected with a supporting plate. The upper end of the supporting plate is rotationally connected to the side wall of the mobile frame. A threaded rodis rotatably connected to the interior of the front side wall of the rail frame, the auxiliary rod is fixedly connected to the interior of the rear side wall of the rail frame, the lower end of a connecting rod is connected with a scraper in a penetrating mode, a box door is hinged to the middle of the front side wall of the box body, and a spraying device is arranged on the outer side of a carrying block. According to the intelligent dining table capable of being automatically cleaned, the tabletop can be conveniently and automatically cleaned, the cleaning efficiency is improved, in addition, garbage can be conveniently and automatically dumped, subsequent garbage collection and cleaning are facilitated, and the practicability is improved.

The invention discloses a dust collector with multiple telescopic sleeve rod sections, which comprises a machine body and a plurality of telescopic sleeve rod sections arranged on the machine body, wherein the multiple telescopic sleeve rods comprise two hollow pull rods which are sleeved with each other and can stretch and retract. The dust connector not only is convenient for a user to fold, store, lift or drag and pull, but also can be quickly carried and moved.

The invention discloses a magnetic-suspension cushion cover structure and a magnetic suspension sofa / bed based on the cushion cover. The magnetic-suspension cushion cover structure comprises a cushion cover body composed of a double-layer fabric, wherein the inside of the cushion cover body is divided into N suspension cavities; the inside of each suspension cavity is provided with two electromagnetic plates of which the like poles are opposite, one of the electromagnetic plate is fixed to the bottom surface inside the suspension cavity, and the other electromagnetic plate is fixed to the top surface inside the suspension cavity; and N is a positive integer which is greater than or equal to 2. The magnetic-suspension sofa comprises a pedestal and a backrest arranged on the pedestal, wherein the pedestal and backrest are both the magnetic-suspension cushion cover structure. The magnetic-suspension bed comprises a bed body, wherein the bed body is completely composed of the magnetic-suspension cushion cover. The invention aims to solve the problem that the simple sofa or bed, which is convenient to be stored and placed and does not need the complex inflation process, is not supplied to the user in the prior art, and overcomes the defects of high time and labor consumption and high air leakage tendency in the existing air cushion sofa or bed.

The invention discloses a surveying instrument support for geographic information science, and relates to the field of geographic information science. The surveying instrument support mainly aims to solve the problems that when an existing surveying instrument support is used, the surveying instrument support is approximately arranged over a control point, a leg support is inserted into the ground, then a surveying instrument laser is turned on for lower point alignment, the distance between the center of the surveying instrument support and a control point is checked through the laser, supporting legs are pulled out of soil to be adjusted, the positions of the supporting legs need to be adjusted many times in the process, and the operation process is tedious and inconvenient. The surveying instrument support for geographic information science comprises a supporting plate, three supporting rods are evenly installed on the supporting plate, the three supporting rods are all hinged to the supporting plate, two guide blocks are arranged on the inner sides of the supporting rods, fixing sleeves are installed at the bottoms of the supporting rods, and fixing screws are arranged on the fixing sleeves. According to the design, three servo motors are used for controlling horizontal movement of a mounting plate, repeated equipment mounting and fixing are avoided, operation is easy, and large-scale popularization is facilitated.

The invention discloses an engineering quality test device applied to a building shear wall stress test, including an outer tube, a bolt knob, and a miniature suction cup. A hinge and a connecting plate are separately installed on two sides between ends of the outer tube, and the connecting plate is connected to the outer tube through a rotating shaft. An inner tube is connected to the other end of the outer tube, and a scale value is engraved on inner walls of the outer tube and the inner tube. A rotating rod is installed through the inside of an installation cavity, and a connecting piece isfixedly installed on an outer wall of the inner tube. A telescopic rod is installed through the inside of a chute, and a spring is disposed inside the telescopic rod. A positioning hole is disposed on an outer wall of an adjustment rod, and the miniature suction cup is fixedly connected to the top of the adjustment rod. The engineering quality test device applied to the building shear wall stresstest helps install a device on a formwork template and a formwork reinforced steel pipe, so as to realize dual-mode installation, facilitate use of the device, and improve accuracy and efficiency oftemplate perpendicularity detection.

The invention discloses a portable water level measuring device for water conservancy project reservoir operation management, which belongs to the technical field of water conservancy projects. The portable water level measuring device comprises a base, rotating frames are fixedly connected to the two sides of the upper end of the base, winding end plates are rotatably connected to the inward sides of the two rotating frames, a winding drum is fixedly connected between the winding end plates, a measuring chain is spirally wound on the winding drum, the measuring chain comprises a plurality of telescopic chain links, a connecting rope and a measuring core rope, the two sides of each telescopic chain link are fixedly connected with chain link hanging lugs, and the telescopic chain links are connected end to end. By arranging the measuring chain, when the measuring chain is used for measuring, a fixed rod body structure can reduce measuring errors caused by deformation of a measuring end during unwinding measurement, the accuracy of a measuring result is improved, reverse operation during winding can separate telescopic chain links, winding of the measuring chain is facilitated, the device is convenient to store and carry, and the practicability of the device is effectively improved.

The invention relates to a holder stabilizer, and concretely provides a stabilizer folding structure and a handheld stabilizer. The stabilizer folding structure is used for rotatably connecting a motor base and a rocker arm, so that the motor base and the rocker arm have a first unfolding state and a second storing state during the relative rotating process. The stabilizer folding structure comprises a buckle structure arranged on the connecting position of the motor base and the rocker arm, wherein at the first state and the second state, the buckle structure is clamped so as to limit the motor base and the rocker arm from relatively rotating; and at the other states, the buckle structure is separated, so that the motor base and the rocker arm can relatively rotate. The folding structureprovided by the invention is convenient for folding and storing a stabilizer, and is convenient to use by a user.

The invention provides a solar energy LED streetlamp intelligent control system. The solar energy LED streetlamp intelligent control system comprises a connecting rod, a fastening nut, a fastening pipe, a wireless communication module, an intelligent controller, a storage battery with a battery manager, a photovoltaic charger, a general control switch, an intelligent cabinet, an angle adjustable preinstalled plate structure, a self-adaptive angle adjusting rainproof lamp structure, a put-down type maintenance rod structure, a retractable auxiliary old people chair structure, a pre-installing angle adjustable power supply plate structure and a supporting base. Due to the arrangement of a sliding groove, an angle adjusting plate, a fixing seat, a connection seat, an adjusting lining plate and an adjusting bolt nut, the position of the angle adjusting plate is easily adjusted during pre-installing, and the illumination level of the system is guaranteed; and due to the arrangement of a driven gear, a rotating seat, a driving gear, an angle driving motor, a connection plate, a rainproof cover, self-detection rainwater sensors, a connecting plate, a lamp holder and energy saving lamps, the self-adaptive self-adjusting function is achieved easily, the effect that the energy saving lamps are protected against rainwater scouring can be guaranteed, and the service life of the system is prolonged.

The invention relates to a connecting piece, a transmission unit and a transmission device which use the connecting piece. The connecting piece comprises a first connecting rod a, a first connecting rod b, and a second connecting rod, wherein the first connecting rod a and the first connecting rod b are arranged in a mutual crossing manner; the included angle between the first connecting rod a andthe first connecting rod b is adjustable; one end of the second connecting rod is movably connected to one end of the first connecting rod a; and the other end of the second connecting rod moves up and down along a straight line along with the change of the included angle between the first connecting rod a and the first connecting rod b. When the vertical angle of a transmission platform and a support changes, the connecting piece does not give thrust to the support, so that the support can be kept moving vertically.

The invention discloses a novel clinical first-aid device for the department of cardiology, and particularly relates to the field of medical instruments. The novel clinical first-aid device comprises stretcher rods and stretcher cloth, the stretcher cloth fixedly sleeves the two stretcher rods, a connecting mechanism is arranged on the rod wall of each stretcher rod, a folding mechanism and a binding mechanism are arranged between the two stretcher rods, and a cardio-pulmonary resuscitation pressing mechanism is arranged above the stretcher cloth. According to the invention, the body of a patient is tightened by using the binding mechanism, the patient is prevented from slipping off from the stretcher in the stretcher transportation process, and the stretcher rods can be retracted and folded when the stretcher is not used by arranging the folding mechanism and the connecting mechanism, so that the acception and storage of the stretcher are facilitated; and by arranging the cardio-pulmonary resuscitation pressing mechanism, the function that the device automatically conducts cardio-pulmonary resuscitation pressing on the patient is achieved, the first-aid efficiency is greatly improved, the two hands of medical staff are liberated, and additional medical treatment services can be provided for the patient.

The invention relates to the field of BIM technology-based green building design, and particularly relates to a BIM technology-based green building design device. The device comprises a storage structure, a supporting structure, a display structure, a driving structure, a first limiting structure, a second limiting structure and a third limiting structure, wherein the driving structure is providedwith the supporting structure used for supporting the display structure, so that the supporting structure and the display structure are conveniently stored through the storage structure; and meanwhile, the second limiting structure is conveniently driven by the driving structure to quickly limit the supporting structure, and therefore, the supporting structure is more convenient and faster to install and disassemble, the loss of accessories in the installation and disassembly process is effectively prevented, and the device is more convenient to carry; and the display structure is connected to the supporting structure through the third limiting structure, so that the display structure is conveniently limited through the third limiting structure, the stability of the display structure is better, the projection quality is greatly improved, and meanwhile, the folding and storage between the display structure and the supporting structure are more convenient and faster.

The invention discloses a railway train automatic water supply device comprising a first driving device, a second driving device, a water supply pipe and a water supply connector arranged at the end of the water supply pipe. The water supply connector faces a carriage of a train. The first driving device is used for driving the water supply pipe to be gradually close to or deviated from the carriage. The water supply connector comprises a water supply seat internally provided with a water supply channel and a valve arranged on the water supply channel. A water receiving seat communicating with a water tank is arranged on the carriage. A water receiving channel used for being connected with the water supply channel in a butting mode is arranged in the water receiving seat. The second driving device is used for driving opening and closing of the valve. Water supply automation is achieved, labor consumption at the time of water supply of the train is omitted, the working strength of workers is reduced accordingly, and the situation that the workers work under the dangerous and severe environment is also avoided.

The invention discloses a visual puncture outfit convenient for fixing an air delivery pipe, which comprises a sealing piece, a clamping mechanism and a movable ring, wherein a sleeve is connected to the bottom of the sealing piece in a buckled mode, a puncture cone is slidably connected to the interior of the sleeve, a C-shaped frame is fixed to the outer side of a mounting ring, a second bolt is connected to the top of the C-shaped frame in a threaded mode, the movable ring is slidably connected to the outer side of the sleeve, a fixed block is fixed to the outer side of the movable ring, and the fixed block is in threaded connection with a third bolt. The visual puncture outfit convenient for fixing the air delivery pipe is provided with the second bolt, trapezoidal blocks and a first spring, and the second bolt at the top of the C-shaped frame is rotated to drive the conical block to drive the two sets of trapezoidal blocks and two sets of clamping blocks below to move oppositely, so that the air delivery pipe is conveniently sleeved on the connecting pipe on the outer side of the sealing piece, and then two sets of connecting rods and clamping blocks are driven to move oppositely under the elastic action of the first spring to clamp the air delivery pipe on the outer side of the connecting pipe, so that the air delivery pipe is conveniently fixed and prevented from falling off.