47results about How to "There will be no failure" patented technology

The invention relates to the technical field of agricultural spraying equipment and discloses agricultural spraying equipment for assisting in retention of property of a pesticide. The agricultural spraying equipment comprises a casing, wherein screws are movably connected to the surface of the casing, the upper ends of the screws are movably connected with driving blades, a pesticide box is fixedly connected to the bottom of the casing, sliding rails are opened in the pesticide box, extruding plates are glidingly connected to the surfaces of the sliding rails, an extension frame is movably connected to the surface of the extruding plates, a reset spring is movably connected to the surface of the extension frame, a suction pipe is movably connected to one side, away from the extension frame, of each extruding plate, a spring rod is movably connected in the suction pipe, a liquid flow pipe is movably connected to the surface of the spring rod, and a homogenization layer is fixedly connected to one side, away from the spring rod, of the liquid flow pipe. The pesticide in a liquid storage bag is sucked to the surface of a water trough, at the moment, water in the water trough flows out, the pesticide makes contact with clear water and is shaken up by vibration force, and the effect that the pesticide is prevented from losing efficacy through proper pesticide preparation during spraying is achieved.

The invention discloses a simulation sand table for marketing major teaching, relates to the technical field of display sand tables, and solves the problem that an existing sand table cannot be hidden and occupies the space of the top of a cabinet body or a table body when not in use. The simulation sand table comprises an alternating function board, and the alternating function plate is inserted into the rail vertical plate. A model of the device is placed at the top of a sand table display board to be displayed, when the sand table is not used, the sand table display board can be driven by an electric push rod b to automatically move downwards, and when the sand table display board moves downwards, an electric push rod a can drive two alternating function boards to move upwards and turn over, so that a hole in the top of a storage cabinet shell is leveled, the top of the storage cabinet shell can be conveniently used for other purposes, and the sand table display board can be hidden in the storage cabinet shell for protection, so that the sand table is prevented from being damaged by mistakenly touching the sand table by people.

The invention discloses a drain trap with a backward flowing prevention function and a difficult drying effect of a water seal. The drain trap comprises a drain trap casing and a water seal structure, wherein the water seal structure comprises a water seal outer sleeve, a water seal inner sleeve, an upper floating cover and a lower floating cover; the bottom end of the water seal inner sleeve is suspended above the bottom cover; the water seal outer sleeve is arranged on the bottom cover; the water seal inner sleeve is inserted into an inner cavity of the water seal outer sleeve; a vertical water passage, and an upper end opening and a lower end opening of the vertical water passage are formed between the water seal inner sleeve and the water seal outer sleeve; the upper floating cover and the lower floating cover are in an annular sheet shape, are arranged on the water seal inner sleeve in a sleeving way and can ascend and descend along the water seal inner sleeve; the upper floating cover movably covers the top end of the water seal outer sleeve and unidirectionally seals the upper end opening of the water passage; a supporting structure is arranged in a corresponding position of the lower end opening of the vertical water passage and between the water seal outer sleeve and the water seal inner sleeve; the lower floating cover is lapped and covers the supporting structure to unidirectionally seal the lower end opening of the vertical water passage; a sealed vertical water seal is formed between the water seal outer sleeve, the water seal inner sleeve, the upper floating cover and the lower floating cover; the effects of preventing odor, preventing cockroaches, preventing backward flowing and preventing drying are achieved.

The invention provides an application method of an OBD connector protection cover. The application method of the OBD connector protection cover comprises a clip, a main body cover, a locking core andan inserting opening, wherein a pair of claws capable of being opened and closed is arranged on the clip; the main body cover covers the whole body of the clip with the pair of claws; as an opening and closing operation part of the pair of claws, the locking core is arranged on the front surface of the main body cover; and as an opening for inserting a connection terminal part of an OBD connector100 into the main body cover, the inserting opening is formed in the back surface of the main body cover. And moreover, the pair of claws is closed by using a key to operate a conical locking pin in the locking core, the connection terminal part of the OBD connector is clamped by using the claws so that the connection terminal part of the OBD connector is integrally formed together with the main body cover, and therefore, a barrier is formed on the main body cover so that the connection terminal part cannot be accessed from outside. According to the application method of the OBD connector protection cover, anyone can simply stop the malicious use of the OBD connector through once operation so that a series of complicated connecting structures is omitted; and therefore, the application method of the OBD connector protection cover has the advantages of simple structure, long service life and simple and convenient operation.

The invention discloses a power distribution cabinet automatic dust removal mechanism with a dead corner cleaning function, relates to the technical field of electrical cabinet dust removal devices, and solves the problems that the dust collection device of the existing power distribution cabinet cannot adsorb dust at dead corners, it is prone to dust accumulation, and if the dust is not cleaned for a long time, circuit elements in the power distribution cabinet are easy to be influenced and damaged after the dust at the dead corners is accumulated to a certain extent. The power distribution cabinet automatic dust removal mechanism with the dead corner cleaning function comprises a dust removal mechanism, wherein the dust removal mechanism comprises a connecting hose, a steering wheel, a fixed disc and a suction pump. According to the device, the dust removal mechanism is driven by a transmission mechanism to uniformly move in the power distribution cabinet, dust removal operation is uniformly carried out on the interior and the inner wall of the power distribution cabinet, efficient dust removal can be carried out on dead corners of the power distribution cabinet, dust removal isthorough, the operation is convenient, and the automation degree is high.

The present invention provides a motor shaft with a location pin. The motor shaft comprises a motor shaft body, the motor shaft body is provided with a cut-through through groove, the internal portionof the through hole is in interference fit with is internally provided with a location pin, the length of the location pin is larger than the outer diameter of the motor shaft body, and the motor shaft body is coaxially provided with a thread tightening portion. The motor shaft with a location pin is fixedly connected with a fan blade at the external portion through the location pin and the thread tightening portion to bear a large load, and the phenomenon of failure due to slipping between the motor shaft and the fan blade cannot be generated.

The invention discloses a method for reinforcing a capping beam by using carbon fiber and a reinforcing structure, which are used for solving the problem that the reinforcement is not firm. The methodcomprises the following steps: step 1, carrying out construction lofting and measurement on the capping beam to be reinforced, accurately determining the size of a repaired steel piece, preparing therepaired steel piece, and fixing the repaired steel piece at a chamfer of the capping beam; step 2, at least arranging one carbon fiber board, a set of fixed end support components, a tension end support component and a closed reinforcing ring consisting of connecting steel plates at the positions of the upper edge or / and the lower edge of the capping beam; step 3, treating the area between the two carbon fiber boards by using carbon fiber cloth. The method for reinforcing the capping beam by using carbon fiber and the reinforcing structure have sufficient self-locking property and floating property, ensures that a closed ring is formed between the carbon fiber board, the support component and the connecting steel piece through the connecting steel plate, and a pre-stress is formed between the closed rings to reinforce the capping beam, thereby having better reinforcing effect than the traditional reinforcing effect.

The invention discloses a frame type aluminum profile building component, relates to the technical field of aluminum profiles, and solves the problems that when an existing aluminum profile is used for manufacturing a window frame, the universality is poor, and matched use of glass and the aluminum profile can be completed only by manufacturing different aluminum profiles. The frame type aluminum profile building component comprises a longitudinal position adjusting block, wherein the longitudinal position adjusting block is inserted outside a transverse position adjusting block. When glass of different models (thicknesses) is installed, the device can adapt to installation of the glass of different models by adjusting the separation distance between a fastening block and a fixed supporting block, the longitudinal position adjusting block can be controlled to move through an adjusting rod, so that the distance between the glass and the edge of a window frame can be adjusted, and different building design requirements can be met; the transverse position adjusting block can transversely move on the top of an aluminum profile base to change the position so as to adapt to installation of glass of different sizes, and the device can be freely spliced for use and is high in adaptability.

The invention discloses a gasoline copper plate corrosion inhibitor, which belongs to the technical field of gasoline corrosion inhibition and is prepared from the following raw materials in parts byweight through compounding: 3 to 6 parts of potassium hydroxide, 10 to 20 parts of sulfonated phthalocyanine cobalt, 2 to 3 parts of acetylacetone cobalt, 5 to 7 parts of sodium benzoate, and 2 to 6 parts of sodium acetate. The inhibitor provided by the invention is good in susceptibility, wide in application range, and free of causing an unqualified phenomenon due to a raw oil property change; issufficient in reaction, favorable in dispersing effect, and free of generating sediments or causing adverse effects on production detection and use; is suitable for industrial production, capable ofmeeting the industrial use requirement since the added sodium benzoate is an excellent corrosion remover, and capable of playing a role in preventing corrosion in a relative harsh environment; is capable of playing a role in dispersing during a product storage process and preventing a complexing reactant in the product from settling and precipitating to cause a large number of precipitates in a storage tank, and capable of being stored for a long time.

The invention discloses a full-automatic gear hobbing machining conveying mechanism, relates to the technical field of conveying mechanisms, and solves the problems that an existing conveying mechanism cannot automatically arrange gear blanks, and the gear blanks still need to be manually arranged to be sequentially arranged on a conveying belt, so that the working and production efficiency is low. The full-automatic gear hobbing machining conveying mechanism comprises a limiting conveying strip, and the limiting conveying strip is inserted into the top of a leveling base plate. The mechanismcan automatically arrange gear blanks, then the gear blanks are sequentially output to the leveling base plate by a conveying rolling disc under the blocking effect of a limiting baffle ring and finally output to the conveying belt of a corresponding production line, and when the gear blanks enter the top of the conveying rolling disc through a feeding cover, under the joint limiting effect of thelimiting baffle ring, connecting strips and the limiting conveying strip, the gear blanks can be sequentially arranged and output to the leveling base plate in the extending part direction of the limiting baffle ring, and are therefore output to the corresponding conveying belt. The mechanism is convenient, flexible and high in automation degree.

The invention discloses a clinical gastrointestinal decompression device for the gastroenterology department, relates to the technical field of medical devices, and solves the problems that when a one-way air bag of an existing gastrointestinal decompression device is used, medical staff need to extrude the one-way air bag repeatedly and reciprocatingly, the operation is very troublesome, and the function is single. The clinical gastrointestinal decompression device for the gastroenterology department comprises a liquid storage tube, and the top of the liquid storage pipe is fixedly connected with the bottom of a mounting shell. According to the device, when the pressure adjusting rod rotates forwards, gas or liquid in the stomach can be pumped out of the stomach through the liquid pumping pipe, so that the effect of decompression treatment on the interior of the intestines and the stomach is achieved, reciprocating operation is not needed, convenience and flexibility are achieved, the labor amount is low, and the pressure adjusting rod can be used reversely when rotating reversely; pressure is injected into the liquid storage tube, so that liquid in the liquid storage tube can be discharged conveniently, pressure injection into the stomach under specific conditions is facilitated, adaptability is high, and use is flexible and convenient.

The invention belongs to a metical apparatus, particularly relates to a high-pressure syringe connection tube used during the high-pressure injection process, which comprises two input ends and one output end, wherein at least one input end is provided with an anti-backflow valve device, the anti-backflow valve device comprises an inlet tube, an intermediate body and an outlet tube, which are sequentially connected with each other from top to bottom, a ball floater with the floating force in the liquid greater than the gravity force of the floater is arranged inside the intermediate body, andwhen the ball floater is under the floating force effect of the liquid, the ball floater floats upwards to seal the inlet tube; and when the anti-backflow valve device is under the injection state, liquid can flows from the inlet tube to the outlet tube through the intermediate body. By adopting the above technical scheme, when suffering the floating force effect of the liquid, the normal application of the anti-backflow valve device can be ensured, and the phenomenon that when the pressure is overlarge, the anti-backflow valve device of the high-pressure syringe connection tube is failed canbe prevented.

The invention relates to the technical field of agricultural spraying equipment, and discloses an agricultural spraying equipment for helping the medicinal liquid to maintain the medicinal properties. The bottom of the shell is fixedly connected with a medicine box, the inside of the medicine box is provided with a slide rail, the surface of the slide rail is slidably connected with a squeeze plate, the surface of the squeeze plate is movably connected with a stretch frame, and the surface of the stretch frame is movably connected with a return spring A suction pipe is movably connected to the side of the squeeze plate far away from the stretching frame, a spring rod is movably connected to the inside of the suction pipe, a liquid flow pipe is movably connected to the surface of the spring rod, and the liquid flow pipe is far from the one side of the spring rod. The side fixed connection is provided with a homogenizing layer. Then the liquid medicine in the liquid storage bag is sucked to the surface of the water tank, and the water in the water tank flows out at this time, and then the liquid medicine is contacted with clean water and shaken by the vibration force, so as to achieve an appropriate amount of liquid medicine when spraying. prevent it from failing.

The invention discloses a miniature high-power relay, relates to the technical field of relays, and solves the problems that according to an existing relay, a lead wire is connected after the relay is used for a long time or is frequently disassembled and assembled, a screw is prone to slipping, and the lead wire cannot be continuously fixed. The miniature high-power relay comprises a quick release block, wherein the quick release block is inserted into a relay shell. According to the miniature high-power relay, the mode that a lead wire is fixed through a screw in a traditional relay is abandoned, the lead wire is fixed in the mode that a fixed pressing piece is pressed on the top face of an inner wiring table through the quick release block, and the quick release block and a limiting block are fixed through clamping connection of positioning clamping teeth and limiting clamping teeth, thus assembly and disassembly are convenient, the flexibility is high, the durability and the service life are far longer than those of a traditional relay using screws to fix wires, and the practicability and the durability of the miniature high-power relay are improved.

The invention discloses a transmission shaft device for swing arm type machinery, relates to the technical field of swing arm type machinery, and solves the problem that the existing swing arm type lawn mower has a circular mowing boundary, which is very inconvenient when mowing grass in a square area ,The problem. A transmission shaft device for a swing arm type machine, comprising an inner arm of a mechanical arm; the inner arm of the mechanical arm is inserted into the shell of the outer arm of the mechanical arm. When the device cuts grass, the mowing radius is square. When the outer arm of the mechanical arm rotates, the inner arm of the mechanical arm can extend outward, so that the mowing path of the inner arm of the mechanical arm can move along a straight line when the outer arm of the mechanical arm rotates. , so that it can better adapt to the harvesting of grass, the harvesting is more thorough, convenient and flexible, and the flexibility and practicability of the device are improved.

The invention discloses a rock ballast loading and transporting device based on mining, relates to the technical field of loading and transporting devices, and solves the problems that: rock ballast loaded in an existing mining vehicle easily falls into a mine tunnel due to fluctuation of the road in the transportation process, smooth use of the road is affected, and manual re-cleaning is needed. The rock ballast loading and transporting device based on mining comprises a balance plate; and the balance plate is inserted into a dragging base. When the device is used for transporting rock ballast, a loading and transporting box body does not shake left and right, and the balance plate can automatically keep horizontal according to the fluctuation of a road when encountering the fluctuating road, so that the phenomenon that the rock ballast falls out of the loading and transporting box body due to the fluctuation and distortion of the mine road in the transportation process is avoided, the tidiness degree of transported rock ballast in the mine tunnel is kept, the road can be based on mining guaranteed to be used smoothly all the time, workers do not need to be taken out to clean the mine tunnel in the follow-up process, and labor input is saved.

The invention discloses a precise guide rail for a CNC machine tool, and relates to the technical field of precise guide rails. The precise guide rail solves the problems that the height of a slidingblock and a rail of an existing precise guide rail cannot be adjusted after installation, the existing precise guide rail cannot adapt to different working environments, and the adaptability is poor.The precise guide rail for the CNC machine tool comprises an adjusting mechanism; and the adjusting mechanism is composed of an adjusting rod, a composite transmission wheel, a driven gear and a positioning gear. According to the precise guide rail for the CNC machine tool, the use height of a guide rail shell can be adjusted through the adjusting mechanism, when the adjusting rod is rotated, theadjusting rod drives the composite transmission wheel to rotate through a bevel gear, the composite transmission wheel drives the positioning gear to rotate through the driven gear, when the positioning gear rotates, the positioning rod can be driven to ascend and descend through a positioning rotating block under the action of threads of a rod body of the positioning rod, so that the guide rail shell ascends or descends, then the use height of the device is changed, the adaptability is high, and the practicability of the device is improved.

The invention discloses a post-surgical nursing getting-up device suitable for elderly patients, relates to the technical field of nursing getting-up devices, and solves the problems that it is troublesome and strenuous to lift armpits of the elderly on a wheelchair to help the elderly get up, and the wheelchair is easy to move and fall down when other persons help the elderly get up. The invention discloses a getting-up device suitable for nursing after a surgical operation for elderly patients comprises a telescopic frame, wherein the two ends of the bottom end of the telescopic frame are rotationally connected to the tops of the linkage blocks correspondingly. According to the device, when the elderly need to be helped to get up, an armpit supporting plate is driven to rise through a telescopic frame to support the elderly, the operation space for accompanying personnel to help the elderly is enlarged; at the moment, a brake fixing block can be inserted into a brake insertion hole of a brake disc through a brake rod, and therefore the wheelchair body which is under a movement state is locked; therefore, the phenomenon that the device accidentally moves to cause danger when lifting the old people is prevented, and the device is stable to use.

The invention discloses a quick-opening door sterilization cabinet, which comprises a cabinet body, a door body and a cabinet body flange arranged at the port of the cabinet body. A lock groove block is arranged in the circumferential direction, and two lock door panels are hinged on the door body. The opening and closing drive mechanism. The sterilization cabinet has the advantages of simple and compact structure, low cost, easy molding and high safety.

The invention relates to a long-acting environment-friendly release agent and a preparing method thereof. The release agent comprises the following components including NiSO4.6H2O, NaH2PO2.H2O, Na3C6H5O7.2H2O, C2H3NaO2CH3COONa, CuSO4, CH4N2S, PTFE particles, graphite particles, octadecyl trimethyl ammonium chloride and deionized water. According to the long-acting environment-friendly release agent, a composite film formed in the using process can achieve the excellent demoulding effect, and can achieve the effects of protecting a mold and prolonging the service life of the mold. The long-acting environment-friendly release agent overcomes the defects that a traditional release agent is prone to transferring and polluting a product are overcome, so that the long-acting environment-friendly release agent is more suitable for the fields, such as optical products, medical products or food products with high requirements; and the excellent demolding performance can be played for a long time after the release agent is sprayed one time.

The invention discloses a thoracic and abdominal cavity liquid negative pressure pumping device capable of accurately pumping the amount, which relates to the technical field of medical instruments, and solves the problems that the maximum volume of an existing needle cylinder is limited, the negative pressure manufacturing stroke is small, pleural effusion of a patient cannot be completely pumped, and the pain of the patient is increased. The thoracic and abdominal cavity liquid negative pressure pumping device capable of accurately pumping the amount comprises a negative pressure pumping cylinder, and a connecting cylinder which is inserted into the bottom of the mounting cylinder. When the device is used, the negative pressure generation assembly can be controlled by the control device to continuously generate negative pressure, the negative pressure generation period is not interrupted, effusion in the pleuroperitoneal cavity of a patient can be stably, efficiently and quantitatively extracted under any condition, extraction is rapid, pain of the patient during effusion extraction is relieved, and use is convenient.

The invention provides a wind power generation device with a supporting base, and relates to the technical field of wind power generation, the wind power generation device comprises a wind power generation base, wherein the wind power generation base is fixedly mounted at the top of a follow-up base, and a concrete base can drive an adjusting stand column to change the use height through an adjusting threaded rod, and therefore, the device can be supported and used under different environmental landforms, and is extremely high in adaptability; an indicating mechanism can rotate along with the change of a wind direction, and the working state of a control motor can be controlled along with the change of the direction of a wind indicating rod, so that the function that a follow-up mechanism can drive the wind power generation base to rotate windward along with the indicating direction of the indicating mechanism is achieved, problems that the height of a supporting rod of an existing wind power generation device is fixed and cannot be adjusted, the supporting rod cannot be supported and used under different environment landforms, a machine head rotates along with the wind direction through a sensor, and later maintenance and replacement are troublesome are solved.

The invention provides a method for applying a protective cover for an OBD connector, which comprises: a clip with a pair of claws that can be opened and closed; a main body cover that covers the entirety of the clip including the pair of claws; and a lock core that acts as a pair of claws that can be opened and closed The operation member is provided on the front surface of the main body cover, and the insertion port is provided on the rear surface of the main body cover as an opening for inserting the connection terminal portion of the OBD connector 100 into the main body cover. And, by performing key operation on the lock cylinder, the conical lock pin closes a pair of claws, and the connecting terminal part of the OBD connector is clamped by the claw, so that the connecting terminal part of the OBD connector is integrated with the main body cover, and the main body The cover prevents access to the connection terminal portion from the outside. The invention enables anyone to simply prevent malicious use of the OBD connector through one operation, saves a series of complicated connection structures, has simple structure, long service life and easy operation.

The invention discloses a gasoline copper plate corrosion inhibitor, which belongs to the technical field of gasoline corrosion inhibition and is prepared from the following raw materials in parts byweight through compounding: 3 to 6 parts of potassium hydroxide, 10 to 20 parts of sulfonated phthalocyanine cobalt, 2 to 3 parts of acetylacetone cobalt, 5 to 7 parts of sodium benzoate, and 2 to 6 parts of sodium acetate. The inhibitor provided by the invention is good in susceptibility, wide in application range, and free of causing an unqualified phenomenon due to a raw oil property change; issufficient in reaction, favorable in dispersing effect, and free of generating sediments or causing adverse effects on production detection and use; is suitable for industrial production, capable ofmeeting the industrial use requirement since the added sodium benzoate is an excellent corrosion remover, and capable of playing a role in preventing corrosion in a relative harsh environment; is capable of playing a role in dispersing during a product storage process and preventing a complexing reactant in the product from settling and precipitating to cause a large number of precipitates in a storage tank, and capable of being stored for a long time.

The invention discloses an automatic dust removal mechanism for a power distribution cabinet with the function of cleaning dead corners, relates to the technical field of dust removal devices for electric cabinets, and solves the problem of dust in dead corners that cannot be absorbed by existing dust collectors for power distribution cabinets, which is easy Dust accumulation occurs. If it is not cleaned for a long time, the dust accumulation in the dead corner will easily affect and damage the circuit components in the power distribution cabinet to a certain extent. An automatic dust removal mechanism for a power distribution cabinet with a dead angle cleaning function, comprising a dust removal mechanism; the dust removal mechanism includes a connecting hose, a steering wheel, a fixed plate and a suction pump. The device drives the dust removal mechanism through the transmission mechanism to move evenly inside the power distribution cabinet, evenly removes dust from the inside and inner wall of the power distribution cabinet, and can efficiently remove dust from the dead corners of the power distribution cabinet. It is easy to operate and has a high degree of automation.

The invention discloses a precision bearing for mechanical equipment, relates to the technical field of precision bearings, and solves the problems of high labor intensity and low efficiency due to the fact that an existing bearing sealing cover is pressed by being held manually and needs to be taken for multiple times during batch installation. A precision bearing for mechanical equipment comprises a push piece. The push piece is inserted into the bottom of the side face of the shell. According to the device, the bearing sealing covers are uniformly placed in the sealing cover bin in the shell, when the device is used, the push piece is pushed, and the push piece can push the single bearing sealing cover out of the sealing cover bin and push the bearing sealing cover to the position over a bearing positioning hole in the bottom of the shell; and after the holding rod is pressed, the bearing sealing cover can be pressed on one side face of the bearing through the mounting pressing cylinder, convenience and flexibility are achieved, and the practicability of the device is improved.

The invention belongs to a metical apparatus, particularly relates to a high-pressure syringe connection tube used during the high-pressure injection process, which comprises two input ends and one output end, wherein at least one input end is provided with an anti-backflow valve device, the anti-backflow valve device comprises an inlet tube, an intermediate body and an outlet tube, which are sequentially connected with each other from top to bottom, a ball floater with the floating force in the liquid greater than the gravity force of the floater is arranged inside the intermediate body, andwhen the ball floater is under the floating force effect of the liquid, the ball floater floats upwards to seal the inlet tube; and when the anti-backflow valve device is under the injection state, liquid can flows from the inlet tube to the outlet tube through the intermediate body. By adopting the above technical scheme, when suffering the floating force effect of the liquid, the normal application of the anti-backflow valve device can be ensured, and the phenomenon that when the pressure is overlarge, the anti-backflow valve device of the high-pressure syringe connection tube is failed canbe prevented.

The invention discloses a composite wooden box structure supported by the ice surface of an indoor temporary ice rink based on building construction, relates to the technical field of composite boxes, and solves the phenomenon that the existing composite wooden boxes are prone to loosening, slipping and dislocation after being fixed, and now There is a problem that the composite wooden box is inconvenient to move. A composite wooden box structure supported by the ice surface of an indoor temporary ice rink based on building construction, including a linkage rod; the top side of the composite box frame is rotatably connected with a tension rod. When the device is spliced ​​and installed with each other, the cooperation between the tension rod and the tension block can realize the stable splicing between the composite box frames, and the anti-slip block and the anti-skid groove will not be loosened and slipped out of the composite box frames. phenomenon, and the bottom of the device is equipped with a telescopic lifting frame, which can drive the moving wheel to lift up and down for use or hide, and the mobile installation is convenient, which improves the flexibility and practicability of the device.