82results about How to "Effective height adjustment" patented technology

The invention discloses a mushroom smashing and grinding device. The mushroom smashing and grinding device comprises a smashing bin and a grinding bin; a cover plate is arranged at the top end of thesmashing bin which is internally provided with a pair of smashing roller; each smashing roller is matched with smashing teeth on the inner wall of the portion, on the corresponding side of the smashing roller, of the smashing bin; the bottom end of the smashing bin is communicated with a feeding port formed in the top end of the grinding bin; a grinding plate and two screw rods arranged in parallel are arranged in the grinding bin; the two screw rods are located above a grinding plate, and are both rotationally connected with the inner wall of the grinding bin; the two screw rods are each provided with a synchronous wheel and a slider; the two synchronous wheels are connected through a synchronous belt; one screw rod is connected with a motor output shaft arranged on the outer side of thegrinding bin; the bottoms of the two sliders are each provided with a cylinder A; the top ends of output shafts of the two cylinders A are each connected with a supporting block; a grinding roller isrotationally connected between the two supporting blocks; a sliding rod is arranged at the rear end of each slider; and the sliding rods are in sliding connection with the inner wall of the grinding bin. The mushroom smashing and grinding device is low in cost, small in size, good in smashing and grinding effect and suitable for small batch production or experimental research use.

The invention relates to the technical field of teaching assisting devices and particularly relates to a multifunctional seat for students. The multifunctional seat has multiple working modes and relatively high practicability, and the body discomfort of users is unlikely to occur; and the height can be integrally adjusted, and the use limit is relatively low, so that the multifunctional seat canbe effectively suitable for different users, the convenience is brought to the user, and the use reliability is improved. The multifunctional seat comprises a plate body, two groups of support rods, aback plate, a left limiting belt, a right limiting belt, two groups of adjusting fasteners, a clamp head, a buckle, a massaging roll, a rotating shaft, a base plate, a threaded rod and a threaded pipe, wherein two groups of fixed rods are respectively connected to the bottom ends of the front sides of a left support rod and a right support rod; the left and right ends of a left limiting belt anda right limiting belt are respectively fixed on the right side wall of the left support rod and the left side wall of the right support rod; and the top end of the threaded plate is connected with thebottom end of the plate body, the bottom end of the threaded rod is inserted into the top end of the threaded pipe through threads, a placement slot is formed in the top end of the base plate, and aball bearing is arranged in the placement slot.

An intelligent book returning machine disclosed by the present invention comprises a shell (1), a touch control screen (2), a card reader (3), a book storage box (4), a main controller and a conveyer. The shell (1) is equipped with a book returning port (6), the book returning port (6) is communicated with the head end of the conveyer, and the book storage box (4) is a box body which is equipped with an upward opening and a box door. The tail end of the conveyer is communicated with the upward opening of the book storage box (4), and an RFID reader-writer (7) used for reading and writing the labels of the books on the conveyer is fixed in the shell (1). A storage plate (8) is arranged inside the book storage box (4), and a compressed spring (9) used for supporting the storage plate (8) is arranged below the storage plate (8). The intelligent book returning machine is convenient for the book returning process, and people do not need to go to the libraries to return the books via the intelligent book returning machine.

A window covering includes a first bracket spaced apart from a second bracket, a shaft positioned between the brackets, and window covering material connected to the shaft. The window covering can also include a window covering material position control mechanism to facilitate positional control for the window covering material. In some embodiments, a rail extends between the first and second brackets above the shaft. Each bracket can include at least one finger that is positionable within a locator hole in an end of the rail so that opposite ends of the rail are connectable to the brackets via the fingers and locator holes. The rail can have a length that is configured so that when the rail is coupled to the first and second brackets via the fingers and locator holes and the brackets can be accurately spaced apart from each other for installation of the window covering.

The invention relates to an intelligent ground trowelling machine suitable for building construction. The intelligent ground trowelling machine comprises a box body and a signal mobile terminal. The box body is internally provided with a central processor. A driving rod is provided with a signal receiver, an operator can remotely control the machine by holding the signal mobile terminal with a hand, labor and time are saved, the physical exhaustion of a worker is reduced, and the progress of construction is accelerated. The box body is internally provided with a hydraulic device, one side of the box body is provided with a lifting rod, the hydraulic device and the lifting rod are used together, the height of the operation of the machine is effectively adjusted, the height of a trowelling plate from the ground is adjusted and fixed according to requirements of on-site construction, which is convenient and quick, at the same time, the smoothness of a concrete floor can be ensured, the bottom of a main rotating shaft is provided with the trowelling plate which is provided with through holes, extraction can be carried out while a smearing operation is carried out, and therefore, the ground smearing effect is better.

The invention belongs to the technical field of agricultural byproduct processing and particularly provides a sunlight drying device capable of going up and down for processing agricultural byproducts. Aiming at the problems that the sunlight drying device is not convenient to adjust, much inconvenience is brought to users in the use process, sunlight drying working efficiency is influenced, and requirements cannot be met well, the following scheme is provided. The sunlight drying device comprises a bottom box. A hydrocylinder is connected to the four corners of the outer wall of the bottom ofthe bottom box correspondingly through bolts. A universal wheel is connected to the outer wall of the side, away from the bottom box, of each hydrocylinder correspondingly through bolts. A first motor is connected to the outer wall of the bottom of the bottom box through bolts. According to the sunlight drying device capable of going up and down for processing the agricultural byproducts, the adjustable performance of the device is achieved, and the convenience of the device in the process of being used is effectively improved; the agricultural byproducts placed on a sunlight drying net can be overturned by stirring claws arranged at the bottoms of stirring rods; sunlight drying efficiency of the agricultural byproducts is effectively improved; sunlight can be reflected by a reflecting plate; and the sunlight drying efficiency of the agricultural byproducts is effectively improved.

The invention discloses a textile machine dust collecting device. The textile machine dust collecting device comprises a cover body, a first filtering box and a second filtering box; a sliding grooveis formed in the inner wall of the bottom of the first filtering box, a filtering bottom plate is slidably connected into the sliding groove, a water outlet hole communicating with the filtering bottom plate is formed in the inner wall of the bottom of the first filtering box, a water pipe connected with the water outlet hole is installed on the outer wall of the bottom of the first filtering boxthrough bolts, and three filter plates distributed in a left-right structure at equal intervals are installed on the outer wall of the top of the filtering bottom plate through the bolts. According tothe textile machine dust collecting device, through the arrangement of the filter plates, when a water pump is started, the water pump sprays liquid inside a water tank onto the filter plates througha spray head, so that the filter plates have dust adsorption function, then the dust filtering function of the filter plates is achieved, and the filter plates are simpler and more convenient to disassemble through matched use of the sliding groove and the filtering bottom plate; and a dust filter screen and a dehumidification screen are arranged inside the second filtering box, so that the filter structure of the device is more perfect.

The invention discloses a deburring device for an injection mold plate. The deburring device for the injection mold plate comprises a shell body. Two partition plates arranged in parallel are weldedon the inner wall of the shell body. A first groove is welded on the sides, close to each other, of the two partition plates. The first groove is internally provided with a rolling bearing. The sides,away from each other, of the two partition plates are provided with fans. Two guiding posts, a placement table and a fixing plate are arranged between the two partition plates. Both ends of the guiding posts are respectively welded on the inner wall of the top of the shell body and the inner wall of the bottom of the shell body. The placement table is arranged above the fixing plate, and a secondmotor is arranged above the placement table. According to the deburring device for the injection mold plate, the fans, a first motor, the second motor, a first connecting rod, a second connecting rod, a belt, a threaded rod, the placement table and the guiding posts are mutually coordinated to make the height of the placement table adjustable during polishing. The device has simple structure, convenient operation, can effectively adjust the height of the placement table, conduct deburring treatment on the plate with different thicknesses and protect operator safety.

The invention provides a monitoring device and monitoring method of a physical state of a supergravity centrifugal model. The monitoring device is composed of four parts, that is, a model box, a liftable fixing mechanism, a displacement monitoring group and a displacement target, and simultaneous monitoring of liquid level and soil surface displacement changes of the model in a test process can be realized; the monitoring method comprises obtaining time domain characteristics of the physical state of the model in the test process based on an equation of state of an internal gas of the supergravity centrifugal model; the supergravity centrifugal model is a three-phase medium model composed of gas, liquid and solid particulate materials in a supergravity environment; and the physical state comprises two indexes, that is, model saturability and a temperature field mean value level.

The invention discloses a rapid catalyst coating device suitable for a ceramic filter tube. The rapid catalyst coating device comprises a storage mechanism, the storage mechanism comprises a bottom frame and a conveying part, a catalyst stock solution barrel is fixedly connected to the position, close to the center of the edge of one side, of the inner bottom face of the bottom frame, a vacuum suction pump is fixedly connected to the position, located on one side of the catalyst stock solution barrel, of the inner bottom face of the bottom frame, a vacuum chamber is fixedly connected to the position, close to the center of the other edge, of the inner bottom surface of the bottom frame, a liquid level detector body is fixedly connected to the position, close to the center, of the inner top surface of the vacuum chamber, and the conveying part is arranged on the catalyst stock solution barrel and the vacuum chamber. According to the rapid catalyst coating device, when a ceramic filter pipe body is effectively placed in the vacuum chamber, a control valve on a second connecting pipe is closed, so that a vacuum suction pump can effectively pump out internal air through vacuum, and a catalyst in a catalyst raw material barrel can be effectively injected into the vacuum chamber through a first conveying pipe under the limitation of a one-way valve.

The invention discloses a novel automobile rubber spring seat comprising a support column. The novel automobile rubber spring seat is characterized in that a groove is opened inside the support column; a fixed column with the surface in sliding connection with a support block is fixedly connected to one side of the bottom of the inner wall of the groove; a first spring is located at the bottom ofthe support block and disposed between the surface of the fixed column and one side of the bottom of the inner wall of the groove; a slider with the bottom fixedly connected with the top of the support block is in sliding connection on the surface of the fixed column and located above the support block; the surface of the slider is in sliding connection with the inner portion of the groove; a first support plate with the back side fixedly connected with a first fixed shaft is fixedly connected with the top of the slider; the surface of the first fixed shaft is rotatably connected with a firstconnecting rod whose inner portion is rotatably connected with a second fixed shaft. The technical field of rubber springs is also related. The novel automobile rubber spring seat has the advantage of achieving effective damping, cushioning and height adjustment.

The invention provides a reciprocating moving type pesticide spraying system of a large sprinkling irrigation machine. The reciprocating moving type pesticide spraying system is mounted on the towersof the sprinkling irrigation machine and comprises a guide rail and a movable pesticide spraying device and is characterized in that the guide rail is inverted-T-shaped and is mounted below a crossingbody between the towers at the left end and the right end of the sprinkling irrigation machine, and the guide rail is fixedly mounted on the middle tower of the sprinkling machine; the movable pesticide spraying device is mounted on the guide rail and comprises a driving trolley, a pesticide tank rack, a pesticide tank, a storage battery, a lifting component and a pesticide applying component, the upper end of the driving trolley is fixedly arranged on the guide rail, and the lower end of the driving trolley is fixed to the pesticide tank rack through a trolley fixing support. The reciprocating moving type pesticide spraying system has the advantages that the movable pesticide spraying device is mounted on the large sprinkling irrigation machine, irrigation can be achieved while fertilizing and pesticide spraying can also be performed on crops, the height and angle of a pesticide applying rod can be adjusted freely, mounting and use convenience can be achieved, cost can be lowered, and spraying effect is increased.

The invention discloses a formwork support system and a construction method. The formwork support system comprises a support system and a formwork system. The support system comprises an adjustable base, wherein the bottom end of the adjustable base is connected with a positioning point, and the top end of the adjustable base is sleeved with vertical rod systems. A transverse rod system is connected between the vertical rod systems through disc buckle joints; a cross bridging or an inclined rod is connected between the vertical rod system and the transverse rod system. The formwork system comprises a top formwork and a wall formwork, wherein the top formwork is matched with an adjustable bracket at the top of the support system, and the wall formwork is connected with the support system through bolts. Compared with a traditional method, the construction method is stable in structure, high in construction efficiency and capable of effectively avoiding the problems that materials are difficult to transfer and pouring is difficult, the whole formwork support system is stable and safe, and accidents are not prone to happening.

The invention discloses a height-adjustable rosewood chair. The rosewood chair comprises a chair back, a seat plate, chair legs and handrails, which are connected with one another by mortise and tenon joint structures, wherein manual height adjusting devices are additionally arranged on the lower parts of the chair legs; each height adjusting device is mainly composed of a ground mat, a rotary rod and a fixed rod; the ground mats are fixedly connected with the lower ends of the rotary rods; the fixed rods are fixedly arranged in the chair legs; the rotary rods and the fixed rods are connected by transmission threads; the ground mats rotate under the driving of the rotary rods and move up and down relative to the fixed rods. The height-adjustable rosewood chair provided by the invention is reasonable in structural design; the height adjusting devices on the chair legs can effectively adjust the whole height of a chair body so as to meet the use requirements of the special crowds; meanwhile, the height adjusting devices are good in strength and stability; the height adjustment is convenient and the precision is high; the high comfort level of the rosewood chair can be ensured effectively.

The invention relates to the technical field of gauze element processing equipment, in particular to a distance-adjustable rotating roller for gauze element processing. The distance-adjustable rotating roller comprises bases and a rotating roller, the bases are symmetrically arranged, lifting assemblies capable of realizing a device lifting function are arranged above the bases, and buffer assemblies capable of buffering certain vibration are arranged at the ends of the lifting assemblies. A U-shaped bracket is arranged above each buffer assembly. When the guide columns are screwed, the guide columns can be limited in the two sides of the lifting table and rotate, the ends of the guide columns can drive the screws to rotate, the retraction amount of the screws is changed under the meshing action of the screws and screw holes A, and similarly, the extension amount of the screws can be changed by rotating the guide columns reversely, so that the distance between the lifting table and the base is changed, height adjustment of the rotating roller is realized, and in combination with the lifting assembly, the requirement for tension adjustment during rolling machining of the gauze element is greatly met.

The invention provides a tool clamp. The tool clamp is used for mounting and clamping a rear tailstock of a frame, and a connecting hole is formed in the rear tailstock. The tool clamp comprises a body, a first driving part and a second driving part, wherein the body is provided with a connecting shaft, the connecting shaft penetrates through the connecting hole, the first driving part is arranged on the body and is used for driving the rear tailstock to rotate around the axis of the connecting shaft, and the second driving part is arranged on the body and is used for driving the rear tailstock to move in the axial direction of the connecting shaft. According to the tool clamp, the structure of the tool clamp is reasonably arranged, so that under the situation that the assembling size of the connecting hole and a carriage is not changed, the assembling size of the rear tailstock relative to a rear longitudinal beam can be adjusted in the height direction and the left-right direction according to a specific actual situation, namely, the assembling size of the rear tailstock relative to the rear longitudinal beam can be adjusted in the plurality of directions, a plurality of angles and a plurality of dimensions by utilizing the tool clamp, a precise and reliable assembly structure foundation is provided for subsequent splicing and welding, the labor intensity of workers is reduced, the assembly welding efficiency of the frame is improved, and the production cost is reduced.

The invention discloses a nut opening size detection and classification device, and belongs to the field of food quality detection. The device comprises a base, a detection unit and a sorting unit arearranged on the base, and the detection unit comprises a CCD camera arranged above a feeding pipeline; a discharging pipeline is arranged at the outlet end of the feeding pipeline, the sorting unit comprises a sorting channel located below an outlet of the discharging pipeline, a high-quality product storage box and a defective product storage box are correspondingly arranged at the two sides below the sorting channel, and a sliding guide rod is arranged in the sorting channel in a sliding fit manner; and the sliding guide rod is connected with a power driving assembly and driven by the powerdriving assembly to slide in the sorting channel, a sorting cylinder is arranged at the front end of the sliding guide rod, and a discharging cavity is formed in the sorting cylinder. According to the device, the problem that in the prior art, the nut opening size is inconvenient to directly detect with naked eyes is solved, nut opening size measurement and grade classification can be accuratelyachieved, the quality of opened shell fruits is improved, and the increasing psychological requirements of people for pursuing high-quality consumption are met.

The invention discloses a clay storage device for ceramic production. The clay storage device comprises a hollow shell, and a storage chamber is arranged in the hollow shell. A valve element board is placed in the portion, located in the storage chamber, of the hollow shell. A sealing ring clamping groove is formed in the side face of the valve core plate. A sealing ring is clamped in the sealing ring clamping groove. Exhaust holes are formed in the bottom of the side face of the hollow shell, and the hollow shell and the exhaust holes are of an integrated structure. A connecting plate is fixed to the edge of the bottom of the hollow shell through bolts. A plurality of supporting legs are arranged at the bottom of the connecting plate, and the connecting plate and the supporting legs are of an integrated structure. A fixed plate is fixed among the multiple supporting legs. An outer shell is arranged in the center of the upper surface of the fixed plate, and the fixed plate and the outer shell are of an integrated structure. By the adoption of the clay storage device, height adjustment can be conducted effectively when ceramic raw materials are stored and taken out, thus, the problem of height limitation is effectively solved, in addition, air serves as power of height telescoping, and the clay storage device has the characteristic of being capable of moving rapidly.

The invention discloses an angle-adjustable teaching display device for preschool education, and relates to the technical field of display devices. The device comprises a machine body, a base, a storage box, an adjusting mechanism and a display mechanism, the base is fixedly arranged at the bottom of the machine body, the storage box is fixedly arranged at the top of the base, the adjusting mechanism is fixedly arranged at the top of the storage box, and the display mechanism is movably arranged in the adjusting mechanism. By arranging an electric push rod, the use height of the device is effectively adjusted so that children can use the device conveniently, then by rotating an adjusting valve, the adjusting valve drives a connecting rod to rotate through the action of a gear, and then a display board of the device is turned over; meanwhile, through the meshing effect of the gears, the device can control the regulating valve, so the objective of adjusting the use angle of the display board is achieved; and through the use of the storage box, the storage function of the device is effectively improved, and the practicability of the device is enhanced.

The invention discloses a diesel generating set shafting centering adjustment device. A base with the bottom provided with a positioning pin is arranged on a stud, a Y-shaped supporting base with a through hole in the middle is opened upwards and sits on the nut, and the upper end of the stud is inserted in the through hole. A ball pressure bearing is arranged at the bottom of the Y-shaped supporting base. A roller path on the inner surface of a movable ring is provided with an arc section, and a roller path on the inner surface of a fixed ring is provided with an inverted-V-shaped section. A gap a is arranged between the edge of the movable ring and the edge of the fixed ring, and a gap a is arranged between the fixed ring and the stud. During using, the positioning pin at the bottom of the adjustment device is arranged in a positioning hole in the center of the bottom of a main power generator shell, the nut is upwards rotated, the Y-shaped supporting base is pushed to move upwards, and a main power generator rotor shaft flange is supported till a high-elasticity diaphragm coupler at the input end of a main power generator is aligned with a diesel engine flywheel. A main power generator rotor shaft is pushed forwards and backwards in the axial direction, the gap between a main power generator rotor and a stator in the axial direction is measured, operation is easy and convenient, adjustment is accurate, and efficiency is improved.

The invention provides a movable pesticide spraying system of a large sprinkling irrigation machine. The movable pesticide spraying system is mounted on the towers at the left end and the right end ofthe sprinkling irrigation machine and comprises a steel cable, a steel cable drive device, a derail preventing device and a movable pesticide spraying device and is characterized in that the steel cable is mounted on the steel cable drive device, the steel cable drive device is mounted on the towers at the left end and the right end of the sprinkling irrigation machine, the derail preventing device is mounted on a crossing body between the towers at the left end and the right end of the sprinkling irrigation machine, and the movable pesticide spraying device is mounted on the steel cable. Themovable pesticide spraying system has the advantages that the movable pesticide spraying device is mounted on the large sprinkling irrigation machine, irrigation can be achieved while fertilizing andpesticide spraying can also be performed on crops, the height and angle of a pesticide applying rod can be adjusted freely, mounting and use convenience can be achieved, cost can be lowered, and spraying effect is increased.

The invention discloses a lift-type automatic moxibustion physiotherapy equipment, which relates to the technical field of traditional Chinese medicine physiotherapy equipment. The invention comprises a hemispherical cover (1) and a hollow bed (4). The hemispherical cover (1) is arranged on Below the hollow bed body (4), the hemispherical cover body (1) is evenly distributed with moxibustion stick conveying holes (5) for placing moxibustion sticks, and also includes a transport mechanism (3) for automatically transporting moxibustion sticks, and Ash collecting hopper (6), lifting mechanism (9), the conveying mechanism (3) communicates with the moxibustion rod conveying hole (5), the described ash collecting hopper (6) communicates with the bottom of the hemispherical cover (1), The ash collecting bucket (6) is connected with the hollow bed body (4) through the lifting mechanism (9), and the present invention greatly improves the efficiency of moxibustion physical therapy.

The invention discloses self-service equipment, a money box and an adjusting mechanism thereof. A first slide block and a second slide block are driven to move towards or far away from each other on adoor plate respectively through a driving assembly. A first driving member is rotationally connected between the first slide block and a height limiting plate, and a second driving member is rotationally connected between the second slide block and the height limiting plate, so that when the first slide block and the second slide block move towards or far away from each other on the door plate, the first slide block drives the first driving member to rotate, and the second slide block drives the second slide block to rotate, thereby enabling the height limiting plate to move stably in the vertical direction. In the scheme, the adjusting mechanism of the money box adjusts the two end heights of the height limiting plate respectively with the two slide blocks, so that the adjustment flexibility of the height limiting plate is improved, and the height of the height limiting plate can be adjusted smoothly, thereby enabling the height limiting plate to be accurately located at a required position. Meanwhile, the adjusting structure of the money box has the advantages of simple and compact structure, small box occupation space, and contribution to the improvement of the integral use effect of the money box.

The invention relates to the technical field of angle type drilling machines, in particular to an angle type drilling machine capable of achieving continuous right-angle turning. The angle type drilling machine comprises a mounting base, a mounting disc and a mounting column, the mounting disc is fixed on the upper surface of the mounting base, the mounting column is fixed on the surface of one side of the mounting disc, and a workbench slidably sleeves the outer surface of the mounting column above the mounting disc. A machine body is rotationally installed at the upper end of the mounting column, a lifting assembly is arranged on the lower surface of the machine body, a driving assembly is arranged on the side surface of the machine body and matched with the lifting assembly in structure, and a transverse moving assembly is arranged at the lower end of the lifting assembly. According to the angle type drilling machine capable of achieving continuous right-angle turning, a drill bit can drill the inner surface of a workpiece conveniently, the problem that in the prior art, a traditional drilling machine cannot drill the inner surface of the workpiece is effectively solved, the practicability of the whole device is improved, and meanwhile the requirement for machining the inner surface of an irregular workpiece in the actual situation is met.

The invention relates to the technical field of daily study assisting devices, in particular to an intelligent desk. The intelligent desk is diversified in operating mode, effective in multimedia teaching and learning and excellent in teaching quality and effect. The board height can be effectively adjusted to adapt to various users to make it convenient for the users to use, and accordingly reliability in use is improved. The intelligent desk comprises a board, a frame, four groups of supporting legs, two groups of slide rails and a drawer. The frame is mounted at the bottom end of the boardto form a placement cavity along with the board, and the front side wall of the frame is provided with an opening communicated with the placement cavity. The intelligent desk further comprises a signal emitter, a receiver, a multimedia learning device, a sensor, a touch screen and a camera shooting instrument. The multimedia learning device is mounted at the top end of the board, the board comprises a first board body, a second board body, four groups of connection frames, a supporting board, four groups of threaded rods and four groups of threaded pipes, and bottom ends of the four groups ofthreaded rods are inserted into top ends of the four groups of threaded pipes in a threaded manner.

The invention discloses a medical image processing device capable of being remotely operated, and relates to the technical field of medical equipment. The problem that a doctor cannot conveniently check pictures displayed by an image processing device is solved. The device specifically comprises an L-shaped bottom plate, four universal wheels are arranged at the four corners of the outer wall of the bottom of the L-shaped bottom plate respectively, a handle, a control panel and a containing frame are arranged on the outer wall of one side of the L-shaped bottom plate, a remote wireless communication module is arranged on the outer wall of the top of the control panel, and a remote controller is arranged on the inner wall of the containing frame. By arranging a threaded rotating shaft, a lifting plate, a connecting rod, a sliding supporting rod and a first guide sliding groove, when the height of the display screen needs to be adjusted, the control panel controls a rotating motor to rotate, the rotating motor drives the threaded rotating shaft to rotate, and when the threaded rotating shaft rotates, the lifting plate is driven to move up and down; and the connecting rod, the slidingsupporting rod and the first guide sliding groove can effectively guide up-down movement of the lifting plate.

The invention discloses a limb recovery cushioning air cushion, which comprises an air bag, wherein a U-shaped frame is arranged on the upper part of the air bag, a number of folding lines and a trachea are arranged on the air bag, and an inflatable rubber bag is inserted and connected to the trachea, and the U-shaped frame is connected with the air bag. , Folding patterns are integrally formed during manufacture. The trachea is provided with an inflation one-way valve and a deflation valve, the inflation one-way valve is located at one side of the inflatable rubber bag, the deflation valve is positioned at one side of the air bag, and the trachea and the air bag are inserted and connected. The airbag is divided into multiple layers, the air pressure capacity is 2-4 atmospheres, and the swelling height is 10-30cm. The invention has the advantages of simple structure, convenient use, adjustable height and distance of elevation, and is beneficial to fix functional positions.