68results about How to "Achieve expansion" patented technology

The invention provides a built-in lifting folding structure of an automobile small table board, which is characterized in that two groups of support plates are respectively arranged on two sides of the interior of a rear box body, and a lifting driving mechanism and a small table board assembly are respectively arranged on two sides of the support plates through an inner guide rail and an outer guide rail which vertically extend; the lifting driving mechanism and the small table board assembly are in transmission through a plurality of transmission wheels which are connected with one another, the lifting driving mechanism controls the small table board assembly to stretch out of the opening of the rear box body, and then the center shaft plate is turned over to achieve unfolding of the small table board. The lifting folding structure can be applied to various vehicle types in the prior art, the occupied space is small, the small table plate can be adjusted between the unfolded state and the folded state, and a passenger can adjust the small table plate to the target position according to needs. According to the embodiment, the elastic supporting structure is arranged, the small table board assembly can be supported, and the supporting strength of the small table board assembly in the unfolded state is improved.

The utility model discloses a waterproof sealing type connector which is provided with a plug, and the plug and a socket are connected with each other. Comprising a sleeve block which is movably arranged on the outer side of the plug in a sleeving mode, a fixing strip is fixed to the inner side of the sleeve block, a fixing groove is formed in the plug on the outer side of the fixing strip, and the fixing strip and the plug slide in an attached mode through the fixing groove; the adjusting mechanism movably penetrates through the two ends of the sleeve block, a sealing assembly is arranged at the end of the adjusting mechanism, the sleeve block moves to drive the adjusting mechanism to synchronously move, on one hand, the connecting tightness of the plug and the socket is guaranteed, and on the other hand, the sealing assembly is driven to seal the connecting gap of the plug and the socket. According to the waterproof sealing type connector, the gap at the joint of the plug and the socket is sealed by changing the thickness of the sealing structure, and the gap can be plugged adaptively according to the size of the gap at the joint of different connectors, so that the sealing performance of the connector after connection is ensured.

The utility model discloses a head-up display system and a vehicle, and relates to the technical field of vehicles. The head-up display system comprises an image generation unit, a dodging unit and a reflection unit, the image generation unit is used for emitting imaging light beams, and the imaging light beams comprise a first light beam and a second light beam. The dodging unit is used for receiving and transmitting the first light beam and the second light beam respectively and enabling light paths of the first light beam and the second light beam to be mutually isolated. The reflection unit is used for receiving the first light beam and the second light beam respectively and reflecting the first light beam and the second light beam to the vehicle window so as to form a near virtual image and a far virtual image respectively. According to the technical scheme, the size of the head-up display system can be reduced, and the cost of the head-up display system is reduced.

The utility model provides a mounting device for an osmometer of an underground water-sealed cave depot, which relates to the technical field of osmometer mounting and comprises a pressure pump and a water pressure pump. The water pressure pump is connected with the pressurizing pump through a pressurizing pipe; the water pressure pump is sleeved with a sealing plug. The pressure pump controls the expansion of the sealing plug through the console; a base is mounted on the water pressure pump and is used for mounting the osmometer; in an initial state, the sealing plug is in a contraction state, the osmometer mounting device is formed by arranging the pressure pump, the water pressure pump and the sealing plug, the volume of the sealing plug is increased through flushing pressurization, contraction and expansion of the sealing plug are achieved, and then stability of the osmometer after entering a drill hole is achieved.

This invention relates to the field of low-temperature fermentation formulation technology. The invention provides a low-temperature resistant compound bacterial enzyme formulation, its preparation method, and its application in the co-fermentation of straw and manure. The compound bacterial enzyme formulation comprises the following raw materials in parts by weight: 8-10 parts of compound bacterial agent, 1-1.4 parts of compound enzyme agent, and 88.6-91 parts of excipients. The compound bacterial enzyme formulation of this invention can ferment straw and manure under conventional conditions as well as at low temperatures of around 15°C, effectively meeting the fermentation requirements in low-temperature regions. By combining the excipients with the bacteria and enzymes, substances and nutrients during the fermentation process can be effectively adsorbed, avoiding acid inhibition, and providing attachment sites for the bacteria and enzymes, thus prolonging their activity.

The utility model discloses a vacuum chamber with a double-propulsion material distribution device, which belongs to the technical field of vacuum pugging and comprises a pug feeding mechanism and a vacuum pugging chamber which are communicated with each other through a material distribution sieve plate, two pugging propulsion lines are arranged in the vacuum pugging chamber, and the two pugging propulsion lines respectively receive pug which is distributed by the material distribution sieve plate. And two pugging propelling lines are integrated in a vacuum cavity of the vacuum pugging chamber. The pug is distributed by the distribution sieve plate and then uniformly falls onto the corresponding pug propulsion lines, and is respectively and independently subjected to homogenization mixing and vacuum degassing treatment, and finally the pug is molded by the distribution lines and then pushed out. The capacity expansion of the vacuum pugging equipment is realized through double-line independent treatment, the production efficiency is improved, and the high integration degree of double lines ensures that the floor area expansion rate of the equipment is extremely low. Due to the fact that the pug of the double lines is processed in parallel after being distributed, the independent operation mode ensures the processing quality of the pug of each single line, and the homogenization and degassing effects are guaranteed.

The invention relates to the technical field of wind power blade mold positioning, and discloses a wind power blade mold clamping mechanism with an adjustable adaptation range and a clamping method.The wind power blade mold clamping mechanism comprises a blade mold body, the blade mold body is fixedly installed at the top of a positioning clamping support through bolts, and an outer side positioning cavity is further fixed to the side wall of the bottom of the blade mold body; the blade mold further comprises auxiliary positioning blocks which are installed on the inner side wall of the blade mold body at equal intervals in an embedded mode, an installation support and a positioning support are fixed in an outer side positioning cavity under the auxiliary positioning blocks, a telescopic rod piece is rotationally connected into the installation support, and the tail end of an output shaft of the telescopic rod piece is fixed to the center of the back face of each auxiliary positioning block. Meanwhile, the positioning bracket penetrates through the back surface of the auxiliary positioning block. Positioning of the blade mold and clamping and positioning of the demolding structure in the mold are achieved, the driving range of clamping and positioning application of the demolding structure is conveniently adjusted, and rapid demolding of the wind power blade is achieved.

The invention discloses a stone processing and conveying device, and relates to the technical field of stone conveying. The conveying mechanism comprises a transmission mechanism used for conveying, a rack connected with the transmission mechanism, a sweeping assembly connected with the transmission mechanism, a dust collection assembly connected with the sweeping assembly, a conveying wall connected with the conveying mechanism and a straightening assembly connected with the conveying wall. The stone sorting device has the advantages that when stone is placed on the conveying belts on the two sides of the transmission mechanism, telescopic cylinders in the straightening assemblies stretch out and draw back along with telescopic springs and abutting blocks, a plurality of rollers rotate, the posture of the stone is straightened in cooperation with the conveying belts, and the stone sorting device is high in sorting efficiency and good in sorting effect. The stone conveying device solves the problems that due to the fact that the shapes of stones are irregular, the stones are often stuck, the posture is not correct, the conveying efficiency is affected, and even equipment is damaged.

This application relates to the field of carbon source materials, and in particular to a composite carbon source for enhancing the denitrification capacity of activated sludge, its preparation method, and its application. The composite carbon source for enhancing the denitrification capacity of activated sludge, by weight, comprises: 45-60 parts of fast-acting carbon source, 10-15 parts of long-acting carbon source, 9-16 parts of synergist, 0.2-0.5 parts of activator, 4-8 parts of composite functional agent, and 20-25 parts of deionized water. This composite carbon source effectively promotes the denitrification start-up speed, provides a stable and continuous carbon source supply, effectively avoids the defects of traditional carbon sources such as excessive supply in the early stage and insufficient supply in the later stage, and ensures efficient operation of the entire denitrification process. It is safe and convenient to use, non-toxic, and poses no risk of combustion or explosion. Storage and addition are simple, significantly reducing on-site operational safety risks. The carbon release process is stable and controllable, and multiple slow-release mechanisms enable flexible regulation of the carbon source release rate to match the denitrification requirements under different operating conditions.

This application relates to the field of vehicle technology, disclosing a storage device, a sub-instrument panel assembly, and a vehicle. The mounting base includes a first end and a second end opposite to each other. The first end is used to connect to a mounting position on the vehicle. The second end has a receiving cavity. A movable support plate is movably connected to the second end. The movable support plate can move within the receiving cavity in a direction approaching or away from the first end to have a first position close to the first end and a second position away from the first end. A clamping assembly is at least partially disposed on the side of the movable support plate opposite to the first end and forms a clamping opening. When the movable support plate is in the first position, the clamping opening retracts to fix the target storage device in the mounting position via the movable support plate and the clamping assembly. When the movable support plate is in the second position, the clamping opening expands to remove the target storage device from the mounting position. Applying the technical solution of this application can solve the problem of insufficient comfort and convenience for rear passengers operating the rear center console screen in the prior art.

The utility model provides a pipe coiling device for PVC (polyvinyl chloride) hose production, which relates to the technical field of pipe coiling and comprises a rack, a coiling drum is rotatably mounted on the rack, a pipe coiling limiting frame is fixedly mounted on the coiling drum, a limiting column is fixedly mounted on the inner side of the coiling drum, and an adjusting sleeve is slidably mounted on the limiting column. A first compression spring is arranged between the adjusting sleeve and the winding drum, a self-locking assembly is arranged between the adjusting sleeve and the limiting column, a plurality of baffles are hinged to the peripheral face of the adjusting sleeve, and a plurality of driving air cylinders are hinged to the peripheral face of the adjusting sleeve. By means of the structure, rapid adjustment and automatic locking of the adjusting sleeve on the winding drum are achieved, automatic folding and automatic unfolding of the baffle are achieved through cooperation of the driving air cylinder and the baffle, and a coiled coil pipe can be taken down from the winding drum conveniently.

The utility model relates to the technical field of down feather production and processing, and discloses a down feather deodorizing device which comprises a limiting assembly, the limiting assembly comprises a shifting piece, a rotating disc is fixedly connected to one side of the shifting piece, a sliding groove is formed in the rotating disc, a limiting rod is fixedly connected to the inner wall of a feeding barrel, and a second rotating shaft is fixedly connected to the upper surface of the rotating disc. A first connecting rod is rotationally connected to the outer wall of the second rotating shaft, a first rotating shaft is rotationally connected to one end of the first connecting rod, and a second connecting rod is rotationally connected to the outer wall of the first rotating shaft. According to the down feather deodorizing device, down feather in the down feather deodorizing device can evenly fall into the feeding pipe, manpower is saved, the problem that all down feather cannot be poured out easily is solved, the motor drives the rotating blades on the third rotating shaft to rotate, stirring and mixing of the down feather are further enhanced through the multiple rotating blades during ultraviolet irradiation, and the deodorizing efficiency is improved.

The utility model discloses an intelligent plugging device for a pipeline. The intelligent plugging device comprises the pipeline, two moving modules, a first transmission part and a third driving part, the moving module comprises a main body, a first fixing plate, a first driving piece, a second driving piece, an anchoring assembly, a sealing assembly, a moving plate, a second fixing plate and a second transmission piece; the main body is arranged in the pipeline, and the first fixing plate is connected into the main body; the fixed end of the first driving part is arranged on the side, close to the first transmission part, of the first fixing plate, and the movable end of the first driving part is connected with the anchoring assembly. The fixed end of the second driving piece is arranged on the other side of the first fixing plate, and the movable end of the second driving piece is connected with one end of the second transmission piece; the other end of the second transmission part is connected with the movable plate; the sealing assembly is connected to the outer side, close to the movable plate, of the body, and the movable plate abuts against the sealing assembly. The second fixing plate is connected to one end of the body close to the first transmission member. Safe plugging of the natural gas pipeline is achieved, and the function of moving in the pipeline is achieved.

The utility model relates to the technical field of dioxin pretreatment, in particular to a purification column for dioxin pretreatment, which comprises a column body and blocking parts, the two ends of the column body are respectively provided with a limiting mechanism, each blocking part is respectively arranged at the two ends of the column body through the limiting mechanisms, each blocking part comprises a mounting plate, and the mounting plates are arranged on the column body. A plurality of notches which are uniformly distributed are formed in the periphery of the mounting plate, movable blocks are arranged in the notches, mounting grooves are formed in the middles of the peripheries of the movable blocks and the mounting plate, and sealing rubber rings are arranged in the mounting grooves; the sealing device has the beneficial effects that by rotating a threaded rod, the threaded rod drives an abutting plate to move, a movable block can expand outwards along a notch in cooperation with a connecting rod, then a sealing rubber ring can be expanded, and at the moment, the sealing rubber ring is better attached to the inner wall of a column body; and the phenomenon that normal purification of dioxin is affected due to the fact that a gap is generated between the sealing rubber ring and the column body due to gas pressure in the using process is avoided.

The present application relates to the technical field of power distribution network planning, and more particularly to a power distribution network multi-resource integrated planning method and system based on a graph neural network. The method comprises the following steps: collecting the operation and geographic data of the distribution transformers, feeder switches, 10kV feeders and each load access point in the target planning area to form a basic planning data set; constructing a power distribution network topology graph and using a graph neural network to identify overloaded feeder sections, low-voltage end sections and overloaded transformer nodes; then, according to the spatial position and power supply correlation of each problem area, determining the distribution transformer capacity expansion layout, tie switch addition and line extension reconstruction path; and finally, optimizing and outputting the target area planning scheme through power flow checking. The present application identifies the weak links of the power distribution network through a graph neural network and cooperatively optimizes the capacity expansion layout, tie transfer and line extension path, thereby achieving the precision, collaboration and economy of power distribution network planning and significantly improving the power supply capacity and overall operation reliability.

The invention relates to the field of expansion anchor cables, in particular to a novel expansion anchor cable which comprises a base, a grouting pipe used for grouting is arranged on the base, a sliding part capable of moving during grouting is further arranged on the base, and an external expansion part capable of expanding outwards along with movement of the sliding part is arranged on the outer portion of the base. The sliding part comprises a grouting outer cylinder which is fixedly connected to the base and communicates with the grouting pipe, a grouting inner cylinder which is arranged in the grouting outer cylinder in a sliding manner, and a connecting rod I which is fixedly connected to one side of the grouting inner cylinder; the method has the beneficial effects that expansion of the anchor cable is completely pushed by grout during grouting, other mechanical devices are not needed for assistance, a special construction technology is not needed either, and actual use is facilitated.

The utility model discloses a multifunctional adjustable goods shelf, which relates to goods shelves and comprises a base fixing frame, and vertical rods are respectively welded at four corners of the top of the base fixing frame; sliding grooves are formed in the adjacent faces of the two vertical rods located on the side edges, a plurality of moving parts are arranged in the sliding grooves in a sliding mode, clamping grooves are formed in the outer side faces of the moving parts, and the number of the clamping grooves in one moving part is not smaller than three. And tenon fork positioning pieces matched with the clamping grooves in an inserting manner are arranged on the opposite side walls of the goods tray. The distance between the cargo trays is vertically adjusted through the moving part, and the base frame is horizontally expanded through the loop bar-guide rail structure, so that bidirectional adjustment is realized, and the flexible use requirement is met.

The invention provides a flower and fruit management method for reducing the postharvest shattering rate of seedless white grapes, and belongs to the technical field of agricultural planting. The invention provides a flower and fruit management method for reducing the postharvest shattering rate of seedless white grapes, which comprises the following steps: in the grape inflorescence separation period, treating inflorescence by using a GA3 aqueous solution, and treating the whole grape plant by using a Vitacat aqueous solution after 3-5 days; and when the grapes bear fruits and fruit grains grow to be as large as mung beans, treating clusters by using a compound aqueous solution of GA3 and Vitacat. When the method is adopted for flower and fruit management, the weight, the soluble solid content and the fruit hardness of the seedless white grapes are not obviously influenced, but the fruit shape index, the fruit brush length and the adhesive force between fruit grains and fruit stems can be effectively improved, and the post-harvest seed shattering rate is obviously reduced.

According to the technical scheme, the efficient cleaning pool is characterized by comprising a supporting frame and a cleaning pool body connected to the supporting frame, a connecting piece used for connecting the supporting frame to the air conditioner is arranged on the supporting frame, the supporting frame comprises a plurality of keel plates, the keel plates are sequentially connected in a hinged mode, and the cleaning pool body comprises a plurality of side walls. The top of the cleaning pool is provided with an opening, the bottom is provided with a water outlet and / or a drainage pipe, and the keels are connected to the side walls of the cleaning pool and used for maintaining the shape of the cleaning pool; the cleaning pool does not need to be assembled, is fast to install on a machine and has a large stable space, the detached air conditioner shell filter screen can be directly placed in the cleaning pool to be directly cleaned, and the efficiency of air conditioner cleaning work is greatly improved.

The utility model relates to the field of medical and health products discloses a portable sanitary emergency knapsack, including knapsack body, shoulder belt and additional knapsack, the shoulder belt includes back interface department and two shoulder straps, the back interface department installs one side of knapsack body, two the shoulder strap symmetrical installation is on back interface department, one side of additional knapsack is installed with several connecting plates, the side of knapsack body is installed with several connecting portions of cooperation connecting plate, the connecting portion has the connecting groove of top side open mouth, and at least part structure of connecting plate can be jointed to in connecting groove, be provided with several firm band on additional knapsack, and the free end of firm band is detachable connection through magic tape with knapsack body. The technical scheme of the application can conveniently realize the expansion and the reduction of the emergency knapsack, and effectively improve the portability of the emergency knapsack.

The present invention relates to the field of engraving technology, and discloses an engraving device based on handicraft and a method of use, including a grinder, wherein the lower end of the grinder is provided with a protective component for preventing large particles of dust; the interior of the grinder is provided with a built-in cavity, the built-in cavity is provided with a built-in motor, and the lower end of the built-in motor is provided with an opening and closing component for controlling water flow; the lower end of the grinder is provided with an extended metal tube, the lower end of the extended metal tube is fixedly connected with a metal ball, and the interior of the metal ball is connected to the interior of the extended metal tube. The present invention achieves the purpose of saving water by arranging a flat airbag and annular rubber, so that water in the side hole flows out and dust is reduced; the hollow tube and the side hole will not be blocked, and a better dredging effect is achieved; the heat generated by the metal ball during grinding can be absorbed by the water inside, thereby reducing frictional heat and extending the service life.

The present invention provides a branched-confluence gas screw transformer mechanism, a branched-confluence compressor, and a branched-confluence expander. The branched-confluence gas screw transformer mechanism comprises: a shell, in which a rotor cavity is formed; at least two screw rotors, all of which can be rotatably meshed and accept the constraints of the rotor cavity wall in the shell; the branched-confluence gas screw transformer mechanism is not provided with an air inlet plate and an exhaust plate. The branched-confluence gas screw transformer mechanism, the branched-confluence compressor, and the branched-confluence expander of the present invention can realize gas compression or expansion without providing an air inlet plate and an exhaust plate in the prior art by setting the relationship between the branching angle and the number of teeth of each spiral rotor, thereby overcoming the energy losses such as air flow disturbance loss and air flow friction loss caused by the air inlet plate and the exhaust plate in the prior art, and improving the response rate, service life, and energy efficiency of the branched-confluence gas screw transformer mechanism.

The utility model discloses a kind of expansion tanks, box body is formed by top, floor, side, rear and door portion;Isolation portion is connected on the rear portion of the box body;Mounting portion is configured to connect the box body with container front end by the isolation portion;Damping portion is used to be arranged between the isolation portion and container front end;Wherein, in the state that the isolation portion is connected with container front end by the mounting portion, there is ventilation area between the box body and container front end.The utility model aims at providing a kind of expansion tanks, can be connected in the lower side of container front end cold machine, by utilizing the space below cold machine, expansion of container is carried out, while meeting the size requirement of transportation etc.;In addition, it can also be installed in the front end of container, for the expansion of special purpose container.

This invention provides a biomimetic octopus-inspired underwater pipeline welding robot, belonging to the field of robotics technology. The main structure adopts a semi-elliptical spherical pressure-resistant shell, with an internal reinforced support frame and a pneumatic bistable device. The pneumatic bistable device drives a water jet propulsion unit, enabling the robot's multi-degree-of-freedom movement. The robotic arm system includes multi-joint robotic arms evenly arranged around the main structure. Each multi-joint robotic arm includes multiple joints, a flexible telescopic rod, and a biomimetic vacuum suction cup. The joints are connected non-linearly. The end of the multi-joint robotic arm is equipped with a biomimetic vacuum suction cup. An SMA actuator is installed within the flexible telescopic rod. The contraction of the SMA actuator generates an eccentric driving force, enabling vertical position control and spatial bending motion of the biomimetic vacuum suction cup. The end of the multi-joint robotic arm can be modularly replaced with a welding module for performing underwater pipeline welding operations.

The present invention relates to a standard flexible packaging structure for components and a manufacturing process thereof, and belongs to the field of flexible electronic technology. The standard flexible packaging structure for components of the present invention comprises a hard device and a flexible packaging body, wherein the hard device is wrapped or supported by the flexible packaging body, a flexible lead is provided between the hard device and the flexible packaging body, an extended interface pad is provided on the surface of the flexible packaging body, a hard device interface pad is provided on the surface of the hard device, and a flexible lead connects the extended interface pad and the hard device interface pad. The packaging structure is simple to manufacture and has strong designability, and can make hard components flexible through the flexible packaging method of the present invention, thereby meeting the demand for components in flexible electronics.

This invention relates to the field of electronic product accessories technology, and discloses a finger-reading mirror and an electronic device. The finger-reading mirror includes a lens assembly and a mounting assembly. The mounting assembly includes a mounting part, a fixing part, and a supporting part. One end of the mounting part is rotatably connected to one end of the fixing part, and the other end of the mounting part is rotatably connected to one end of the supporting part. The mounting part is used to mount on an external device, and the lens assembly is fixed to the fixing part. The mounting part, fixing part, and supporting part form a triangular support structure or a folding stacking structure, and switch between the triangular support structure and the folding stacking structure in response to external force. In this way, when the mounting assembly forms a triangular support structure, the lens assembly and the stacking direction of the mounting assembly are tilted at a preset angle to realize the unfolding of the finger-reading mirror. When the mounting assembly forms a folding stacking structure, the lens assembly is parallel to the stacking direction of the mounting assembly to realize the folding of the finger-reading mirror.

The application discloses an interferometric measuring device and method based on a spherical reference polar objective. The device comprises an illumination light source, a polarized polarizing element, a first light splitting element, a polar objective integrated with a spherical reference mirror and a wave plate, and a polarized imaging module comprising a polar camera. Linearly polarized light is divided into test light and reference light after entering the objective, and is combined after being reflected by the surface to be measured and the spherical reference mirror, respectively. The specific angle of the wave plate in the objective produces a phase bias to form coherent light. The polar camera can synchronously collect multiple phase-shifted interference images with different polarization states through one exposure. The application combines a single objective with polar optics, has compact structure and is convenient to assemble. The spherical reference mirror expands the field of view of the fringe, and the polar synchronous phase shift effectively freezes the environmental vibration interference, so that the measuring efficiency and precision of the spherical device can be significantly improved.

The invention relates to the technical field of coal mining, in particular to a cage type resistance-increasing large-deformation anchor rod and a using method thereof. The anchor rod comprises an anchor rod body, a guide rod, a cage pipe and a limiting piece, the anchor rod body comprises an anchoring section located at the front end of the anchor rod body and a threaded section located at the tail end of the anchor rod body and connected with the anchoring section, and the threaded section is provided with threads. The radial size of the cage pipe is increased by pushing the first push key, so that expansion of the cage pipe is realized, the anchoring agent is anchored in a pressed state, hole wall cracks and cavities are tightly filled, the interface bonding strength of the anchor rod body and the anchoring agent and the interface bonding strength of the anchoring agent and the hole wall are greatly enhanced, three-body two-interface damage is reduced from the source, and the service life of the anchor rod body is prolonged. The bottleneck of traditional anchor rod anchoring force improvement is broken through. When the anchoring force reaches the limit, no matter whether the anchor rod body is separated from the anchoring agent or the anchoring agent is separated from the hole wall of the anchoring drill hole, the cage pipe can further expand in the radial direction along with the movement of the anchor rod body, the extrusion force between the cage pipe and the hole wall is continuously increased, extra axial resistance is provided, and sudden failure of a supporting system is avoided.

The utility model relates to the technical field of infant tables, and discloses a height-adjustable multifunctional infant table which comprises two U-shaped table legs, sliding rods are arranged at the tops of the two ends of the two U-shaped table legs in a sliding and sleeved mode, square holes matched with the sliding rods are formed in the two sides of the tops of the two U-shaped table legs, and the tops of the four sliding rods are fixedly connected with the same rectangular cover. Each U-shaped table leg is provided with an adjusting mechanism, each adjusting mechanism comprises a limiting rod fixedly connected between the inner sides of the U-shaped table legs, two sliding blocks are symmetrically connected to the circumferential surface of each limiting rod in a sliding mode, round holes matched with the limiting rods are formed in the two sliding blocks, and a two-way lead screw is further rotationally connected between the U-shaped table legs. According to the utility model, the technical effects that the height of the T-shaped desktop can be quickly and conveniently adjusted, so that an infant can be helped to keep a correct sitting posture, and eyesight and spine health are protected are achieved.

A vagina operation assist device for surgery comprises an assist device body and a fixing device, the assist device body comprises a plurality of first air bags, and each first air bag is provided with a first air port; the assist device body further comprises a plurality of arc-shaped blocks, the arc-shaped blocks and the first air bags are alternately connected to form end-to-end closing, and a first operation channel is formed in the assist device body; a connecting channel is also arranged in the arc-shaped block; the fixing device comprises a plurality of fixing claws, one ends of the fixing claws are pivoted to the opening of the connecting channel and are in transmission connection with operating rods, the operating rods movably penetrate through the connecting channel, and the ends, away from the fixing claws, of the operating rods are exposed out of the connecting channel; when the auxiliary device is used, the auxiliary device body is pushed into the vagina, then the air bag is inflated to be expanded, the diameter of the auxiliary device body is increased, the vagina wall is extruded and expanded, then the operating rod is pulled to enable the fixing claw to rotate to be in an umbrella shape and be fixed in the pelvic cavity, the auxiliary device body can be fixed in the vagina, and the vagina is kept in an expanded state. And the subsequent surgical operation is facilitated.