5387results about "Fouling prevention" patented technology

The invention relates to the technical field of cable manufacturing, in particular to a wire drawing machine for cable manufacturing and a using method thereof.The wire drawing machine for cable manufacturing comprises a wire drawing machine body, a first stretching rotating roller, a second stretching rotating roller, a fixing box and a mold frame, and a control box body is fixedly installed on one side of the top of the wire drawing machine body through bolts; a first stretching rotating roller and a second stretching rotating roller are rotationally connected to the two ends of one side of the bottom of the control box body on the wire drawing machine body, a mold frame is fixedly installed at the center between the first stretching rotating roller and the second stretching rotating roller on the wire drawing machine body through bolts, and a plurality of wire drawing molds are installed in the mold frame in a staggered mode through bolts. The cleaning brush on the base ring cleans cable wires through rotating connection of the friction rolling wheels, cleaned metal powder and wire drawing lubricating liquid containing impurities enter the collecting box to be collected, adsorption cleaning is conducted through the movable magnet, the cleanliness of the lubricating liquid is improved, the subsequent processing quality of the cable wires is improved, and the service life of the cable wires is prolonged. The practical value is high.

The invention discloses a Coanda effect-based sand-proof and dust-proof device for an electrolytic bath, which is characterized in that a surrounding dust cover structure which is in flexible contact with the electrolytic bath or keeps a non-contact gap with the electrolytic bath is formed at the periphery of a full-load-bearing movable bracket, and the dust cover structure forms a semi-closed protection structure between a foundation and the electrolytic bath; dustproof cover structures composed of fences are arranged on the two sides of a foundation with profile steel as the foundation, each dustproof cover structure at least comprises a vertical fence wall arranged on the side portion of the full-bearing type movable bracket, the bottom of each vertical fence wall is connected with the foundation, and the top of each vertical fence wall makes flexible contact with the electrolytic cell or forms a non-contact gap with the electrolytic cell. A continuous variable-curvature Coanda curved surface is adopted, the airflow speed is increased through the wall attachment effect, a laminar flow air curtain is formed, and curvature-flow velocity coupling optimization is formed. Compressed air is injected through the narrow slit nozzle, ambient air is pried to form a large-flow air curtain, the actually measured air curtain coverage area is 3.2 times that of a traditional flow guide plate, and the unit energy consumption is reduced by 57%.

The invention discloses pretreatment equipment for LCD (liquid crystal display) glass substrate processing, which comprises a roller conveyor, a cleaning device and a drying device, the cleaning mechanism comprises a spraying pipe arranged in the isolation hood, and air knives are arranged on the two sides of the spraying pipe in an inwards inclined mode respectively; the water collecting and draining tank is arranged on the lower side of the roller conveyor on the lower side of the isolation hood; the demisting mechanism comprises an adsorption cotton roller rotationally mounted on the inner side of the air knife, and the air knife is provided with a guide groove for extruding and scraping the adsorption cotton roller; the drying device comprises a drying chamber; the air inlet mechanism comprises an air blower, the air inlet end of the air blower is connected to the corresponding air distribution pipe, a connecting pipe is rotationally installed in the air distribution pipe, a cylindrical filter element is fixedly connected to the connecting pipe, and an impeller of the air blower and the connecting pipe are in transmission connection to the output shaft ends of the corresponding driving motors respectively. The LCD glass substrate cleaning and drying device can effectively ensure the cleaning effect and the drying effect on the LCD glass substrate.

The embodiment of the utility model provides a cleaning base station for a cleaning robot, the cleaning robot comprises a roller, a scraping strip assembly and a dirt collecting box, the scraping strip assembly scrapes and cleans the roller, and the cleaning base station comprises a cleaning tank and a water inlet channel. When the cleaning robot is in butt joint with the cleaning base station, the roller abuts against the cleaning tank, and when the cleaning base station conducts self-cleaning on the cleaning robot through the cleaning tank, in the rotating direction of the cleaning roller, cleaning fluid makes contact with the cleaning roller through the water inlet channel so as to wet the cleaning roller, and the cleaning fluid on the cleaning roller is scraped into the dirt collecting box by the scraping strip assembly; therefore, the dirt collecting box is cleaned. In the self-cleaning process of the cleaning roller, the base station provides the cleaning fluid for the cleaning roller through the water inlet channel, so that the cleaning water consumption of the cleaning roller in the self-cleaning process is guaranteed, and the cleaning effect on the roller is guaranteed.

The invention relates to the technical field of electric power construction, in particular to an auxiliary welding mechanism for electric power construction, which comprises a worktable, a mounting frame is mounted at the top end of the worktable, an air cylinder A is mounted at the top end of the mounting frame, a welding head is mounted at the output end of the air cylinder A, and a shell is arranged at the top end of the worktable. Negative pressure is generated through the suction pump, the smoke dust is efficiently collected into the collecting box through the air suction head, purified air forms an air curtain, diffusion of the smoke dust and welding slag is blocked, air is purified, a welding area is isolated, the suction force of the suction pump can further be used for driving the vibration mechanism, and therefore the smoke dust can be effectively collected. In addition, heat conduction of the welding head enables gas of the gas storage pipe to expand, suction force of the gas suction pipe and frequency of the vibration rod are automatically adjusted, welding quality and efficiency are improved, and frequent manual parameter adjustment is not needed.

The invention discloses a supporting and protecting mechanism and method for an outdoor large spliced display, and relates to the technical field of protective equipment, the supporting and protecting mechanism comprises a mounting bottom plate, a protecting box is fixedly connected to the upper end face of the mounting bottom plate, supporting vertical plates are fixedly connected to the two sides of the upper end face of the protecting box, and vertical grooves are formed in the supporting vertical plates; a foldable screen assembly is arranged between the two vertical grooves. Through the arrangement of a first gear, a top threaded block, a middle sliding block, a connecting rod and an L-shaped mounting rod, the screen mounting plate can be folded when needed, the folded screen mounting plate can be installed in the protection box and then is sealed through a cover plate, the wind area of the folded screen mounting plate is greatly reduced, and due to protection of the protection box, the screen mounting plate can be conveniently and rapidly folded. Therefore, the display screen mounted on the screen mounting plate can be effectively protected from being damaged in severe weather such as strong wind and hail.

The invention relates to the field of multi-way valves, and particularly discloses an integrated actuator type heat management multi-way valve which comprises a multi-way valve mechanism and an actuator mechanism. The multi-way valve mechanism comprises a multi-way valve body assembly, and a valve element assembly is arranged in the multi-way valve body assembly. The actuator mechanism comprises an actuator protection box assembly installed on the upper side of the multi-way valve body assembly, and an actuator assembly is installed in the actuator protection box assembly. According to the multi-way valve, the actuator assembly drives the valve element assembly to rotate in the multi-way valve body assembly, the flow direction of fluid such as cooling liquid and heating media can be accurately controlled, and the accurate control is beneficial to optimizing the performance of a heat management system; according to the thermal management multi-way valve, the actuator mechanism and the multi-way valve mechanism are integrated together and protected through the actuator protection box assembly, so that the structure of the whole thermal management multi-way valve is more compact, and the compact structure is beneficial to saving installation space and reducing system complexity and is convenient to maintain and operate.

Provided is an adhesion suppressing member that is configured to suppress a work piece from adhering to a work tool of a construction machinery. The adhesion suppressing member is formed in a plate shape and includes, on a front surface thereof, a resin material having a water repellent property. The adhesion suppressing member is installed at a predetermined portion of the work tool such that the front surface forms a part of a surface of the work tool held in contact with the work piece.

The invention relates to the technical field of hydraulic engineering construction equipment, in particular to a soil sampling device which comprises an excavator, a rock soil sampling device is arranged on the excavator, and the rock soil sampling device comprises a sampling rod used for sampling rock soil and a driving mechanism used for driving the sampling rod to move. The sampling rod is a hollow rod, a storage cavity for storing samples is formed in the inner wall of the sampling rod, and a plugging device is arranged between the storage cavity and the hollow cavity of the sampling rod; the plugging device comprises a plugging plate and an adjusting mechanism; the plugging plate is used for plugging and communicating the storage cavity and the hollow cavity; the adjusting mechanism is used for driving the plugging plate to adjust; and the plugging plate is rotationally matched on the sampling rod. The soil sampling device has the effects of reducing impurities entering a sample during re-sampling and improving the sampling accuracy.

The invention relates to a liquid crystal panel dust removal device, and relates to the technical field of liquid crystal panel dust removal, the liquid crystal panel dust removal device comprises a workbench, the top of the workbench is provided with a dust removal frame, one side of the top of the dust removal frame is provided with a positive pressure dust suppression structure, and the positive pressure dust suppression structure comprises an air filter, an air blower, an air pipe and an air inlet; the inner walls of the two sides of the center of the dust removal frame are connected with lead screws through bearings, the outer walls of the middles of the two lead screws are in threaded connection with moving blocks, the bottom ends of the moving blocks are connected with a dust removal mechanism, and the dust removal mechanism comprises a fixed frame, a top frame, an electric telescopic rod, a connecting plate and a cleaning cotton strip. The cleaning cotton slivers are driven by the driving mechanism to move to the position, above the water collection tank, of the edge of the dust removal frame, then the cleaning cotton slivers moving upwards are extruded and cleaned, so that water drops and dust impurities adsorbed by the cleaning cotton slivers fall into the water collection tank to be collected, the cleaning cotton slivers are extruded and cleaned, and the self-cleaning function is achieved.

A head-mounted display system includes a head mounted display unit with a display and a positioning and stabilising structure configured to hold the head-mounted display unit in an operable position on the user's head in use. The positioning and stabilizing structure includes headgear with at least one strap configured to contact the user's head, in use. The head mounted display unit and at least a portion of the positioning and stabilizing structure are formed from a one piece construction of textile material.

The invention discloses an intelligent identification system for puffed corn, and relates to the technical field of computer vision and image processing, and the system comprises an image collection module which integrates multispectral imaging and a near-infrared sensor and is used for obtaining surface morphology, internal structure and moisture content data of puffed corn; an environment light intensity sensor and an LED array are arranged in the self-adaptive optical compensation module, the wavelength and illumination intensity of a light source are adjusted in a closed-loop feedback mode, and color feature deviation caused by workshop environment light changes is compensated; the image processing module is used for deploying a lightweight hybrid neural network model and is used for adhesive particle segmentation and defect detection; the real-time sorting control module is used for driving a three-axis mechanical arm and a pneumatic spray valve according to an identification result so as to realize defective product rejection and grade subpackaging; and the digital twinning optimization platform is used for outputting a process adjustment suggestion to the production line PLC. According to the invention, through the holographic sensing network, the hybrid intelligent decision and the cross-domain cooperative control, the problems of inaccurate reading, unquick judgment and inaccurate control in puffed corn identification are solved.

The invention discloses a vehicle chassis height detection device for a stereo garage, and relates to the technical field of stereo garages. The device comprises a garage foundation, a concrete frame is embedded in the garage foundation, the upper surface of the concrete frame is flush with the upper surface of the garage foundation, three horizontally-arranged detection grooves are formed in the top of the concrete frame, the three detection grooves are parallel to one another, and the other detection grooves are parallel to the other detection grooves. And horizontally arranged linear guide rails are fixedly mounted in the detection grooves. The lowest point and the approximate height of the vehicle chassis are determined through the ultrasonic detector, the current chassis height of the vehicle is obtained, and the propagation speed of ultrasonic waves on fallen leaves, packaging bags and other common garbage attached to the vehicle chassis is obviously different from the propagation speed of ultrasonic waves on the vehicle chassis. Therefore, the garbage on the chassis does not have obvious influence on the measurement result, and meanwhile, the problems that a current optical measurement instrument is inflexible in setting, inconvenient in height interval adjustment and easy to be influenced by weather are solved.

A cleaning device (300), an impurity removal system (100) and a cleaning method. The cleaning device (300) is used for cleaning waste attached to an adsorption member (120). The cleaning device (300) comprises: a cleaning mechanism (310), which is configured to output an isolation member; a scraping and washing mechanism (330), which comprises a clamping jaw (331) and a first scraping and washing driving mechanism (332), wherein the clamping jaw (331) is used for clamping the adsorption member (120) by means of the isolation member, and the first scraping and washing driving mechanism (332) is used for driving the clamping jaw (331) to open or clamp; and a first driving mechanism (130), which is used for driving the scraping and washing mechanism (330) to move in an axial direction of the adsorption member (120), so as to scrape off the waste attached to the adsorption member (120).

The utility model belongs to the field of logistics storage, and particularly discloses a logistics storage sorting device, which comprises a main body comprising a front-section conveying belt and a rear-section conveying belt, the detection mechanism comprises a middle-section conveying belt arranged between the front-section conveying belt and the rear-section conveying belt, a shell arranged at the top of the middle-section conveying belt, a dust blocking assembly arranged in the shell and a detection assembly arranged in the shell; the sorting mechanism is arranged on the rear section conveying belt; the dustproof protection effect of the device can be improved through the shell and the dust blocking cloth, the influence of external force in the detection process can be effectively avoided, the resistance of the device to a product can be reduced through the dust blocking assembly under the condition that the dust blocking performance of the device is not influenced, and the product quality is improved. The specification, data and weight of products can be detected at the same time through the detection assembly, sorting is automatically conducted through the sorting mechanism, the structure is simple, time and labor are saved, and the working efficiency is improved.

The invention relates to a clamping telescopic mechanism for large cylindrical battery production materials, and belongs to the technical field of battery production material transfer equipment. The clamping telescopic mechanism comprises a chassis, two fixed arms are slidably arranged on the chassis, and the opposite sides of the two fixed arms are slidably connected with first telescopic arms; the opposite sides of the two first telescopic arms are slidably connected with second telescopic arms, and synchronous belt transmission assemblies are arranged on the first telescopic arms; each second telescopic arm is provided with a driving piece, the driving piece is connected with a deflector rod, the opposite sides of the two second telescopic arms are provided with limiting plates, and the deflector rods are arranged close to the extending ends of the second telescopic arms compared with the limiting plates; a clamping assembly is installed on the chassis, a supporting assembly is further installed on the chassis, the supporting assembly is located between the two fixing arms, and the supporting assembly is used for supporting a tray. The telescopic pallet fork has the effects that the adaptability of the telescopic pallet fork to trays with different heights is improved, and stability and reliability are kept in the heavy-load transfer process.

The invention discloses a heat dissipation and dust prevention device for a notebook computer, and belongs to the technical field of notebook computer heat dissipation bases, the heat dissipation and dust prevention device comprises an air blowing assembly, the air blowing assembly comprises a dust prevention box, a rubber pad is fixedly connected to the upper side wall of the dust prevention box, and a centrifugal fan is fixedly connected to the lower side wall of the dust prevention box; branched pipes are communicated among the plurality of filtering assemblies, and air pipes are communicated between the branched pipes and the centrifugal fan; the filtering assembly comprises an air cylinder, a filtering cylinder is arranged in the middle of the air cylinder, a scraping block is slidably connected to the interior of the air cylinder, and an annular block is fixedly connected to the air cylinder. External air is guided into the filtering assembly through the centrifugal fan, and the filtering assembly can filter dust in the air, so that it is ensured that airflow flowing through the interior of the filtering assembly facilitates heat dissipation of a notebook computer; meanwhile, the dust removal assembly is matched, dust filtered out by the air duct can be automatically cleaned, and the ventilation performance and the heat dissipation efficiency of the filtering assembly are further improved.

A sensor cleaning system for cleaning an environment sensor includes: an air cleaning system configured to clean an environment sensor by spraying compressed air; a washer fluid cleaning system configured to clean the environment sensor by spraying washer fluid onto the environment sensor; a suction cleaning system configured to suck around the environment sensor; and a controller configured to control the air cleaning system, the washer fluid cleaning system, and the suction cleaning system.

The utility model discloses a two-way rotary sealing butterfly valve, which belongs to the technical field of butterfly valves and comprises a butterfly valve body, wherein a mounting block is connected to the top of the butterfly valve body; the utility model is provided with a protection component, wherein a pull rod is moved to drive a plug-in rod to move upward, the plug-in rod moves upward to squeeze a first spring, and then the protection cover is moved toward the end plate direction, and a connecting column is plugged into the inside of a plug-in cavity, and then the pull rod is released, the first spring is restored to its original appearance and drives the plug-in rod to be plugged into the inside of the connecting column, and under the action of the end plate and the protection cover, the components of a cleaning and de-cluttering mechanism can be protected, and dust and other impurities in the external environment are prevented from adhering to the components of the cleaning and de-cluttering mechanism, causing the components of the cleaning and de-cluttering mechanism to be blocked, thereby ensuring the normal service life of the components of the cleaning and de-cluttering mechanism, and at the same time, during the operation of the cleaning and de-cluttering mechanism, air circulation inside the protection cover can be ensured under the action of the vent.

The invention discloses intelligent three-dimensional projection display equipment, and relates to the technical field of three-dimensional projection equipment, the intelligent three-dimensional projection display equipment comprises a shell, a base and holographic projection glass, the base is fixedly connected in the shell, the number of the holographic projection glass is four, the four pieces of holographic projection glass are fixedly connected with one another and fixedly connected to the base, and the holographic projection glass is arranged in the shell. The holographic projection equipment comprises a shell, holographic projection glass is arranged on the shell, projection equipment is arranged on the upper portion of the holographic projection glass, a display screen is fixedly connected to the outer side of the shell, an access door is hinged to the outer side, close to the display screen, of the shell, and a shielding assembly capable of shielding the projection display equipment according to light rays is installed in the shell. The problems of light reflection, color fading, blurring and the like of a projection picture are avoided, the shading cloth can reduce the influence of ambient light on projection light rays, accurate restoration of colors is ensured, and the position and the unfolding size of the shading cloth can be flexibly adjusted, so that the shading applicability is improved.

The invention discloses a self-cleaning device for observation window glass of a high-temperature dust removal pipeline detector of a bag type dust remover, and belongs to the technical field of cleaning equipment. A bucket-shaped front chamber is arranged on the outer side wall of a high-temperature dust removal pipeline, one side of the bucket-shaped front chamber is fixedly connected with a case bin through a connecting piece, and an observation opening is machined in the case bin; optical glass used for observing the interior of the high-temperature dust removal pipeline is evenly machined on the glass carrying disc in the circumferential direction, a spark detection device host is arranged on the fixing support, and a pre-cleaning rubber strip, a main cleaning rubber strip and a liquid collection rubber strip are arranged on an inner side plate of the machine box bin. The glass carrying disc is periodically rotated through the stepping motor, while the glass carrying disc rotates, the cleaning mechanism automatically completes cleaning of polluted glass, and the cleaned observation window glass is periodically alternated, so that self-cleaning of the observation window glass of the high-temperature dust removal pipeline detector is achieved, blinding failure of the detector is avoided, and the service life of the detector is prolonged. Meanwhile, the working efficiency of the spark monitoring device can be improved, the detector is free of maintenance in the working period, and the equipment operation and maintenance cost is reduced.

The utility model belongs to the technical field of washing equipment, and particularly relates to a rotary de-ironing separator with a cleaning function, which comprises an upper box body, a motor, a mounting rack, a fixed plate I, a magnetic cylinder and a positioning rod, the mounting rack is fixedly connected to the left side of the upper box body, the motor is mounted above the mounting rack, the left side of the fixed plate I is connected to the output end of the motor, and the magnetic cylinder is mounted above the mounting rack. The positioning rod is fixedly connected to the right side of the first fixing plate, the outer surface of the positioning rod is sleeved with the magnetic barrel, and the cleaning device is arranged at the right end of the magnetic barrel and comprises a first air cylinder, a scraper, a fixing rod, a second fixing plate and a fixing column. According to the rotary iron remover with the cleaning function, a motor drives a first fixing plate, a positioning rod and a magnetic barrel to rotate to adsorb scrap iron, a first air cylinder drives a second fixing plate, a fixing rod and the magnetic barrel to move back and forth on a scraper to clean the scrap iron on the surface of the magnetic barrel, and a second air cylinder and a connecting rod mechanism drive a rotating shaft and a baffle to rotate; waste materials and raw materials are guided to different areas in the collecting tank, and the dust cover and the dustproof cover prevent dust from entering the equipment.

The invention discloses an indoor intelligent lamp, and belongs to the technical field of lighting devices, the indoor intelligent lamp comprises a lamp holder, a lamp holder is fixedly connected to the lamp holder, a lamp shell is fixedly connected to the bottom of the lamp holder, heat dissipation pieces are mounted in the lamp holder and the lamp shell, and each heat dissipation piece comprises a fan and a convex cylinder; a convex barrel is arranged in the lamp shell, the convex barrel can stretch and retract up and down along the rotating rod, a dust blocking cavity is formed between the convex barrel and the lamp shell, the lower end of a dust sweeping rod can push a positioning insertion strip to penetrate into the bottom of the lamp shell, and an LED bulb is arranged in the lampshade. The LED lamp has the advantages that the service life of the lamp is guaranteed, meanwhile, the situation that the lighting effect of the LED bulb is affected due to the fact that external dust directly enters the lampshade is effectively avoided, the dust blocking effect is achieved, the lighting efficiency of the lamp is guaranteed, dust in the dust blocking cavity can be cleaned, and the heat dissipation efficiency is further guaranteed.

The invention provides a photovoltaic power generation solar panel and an erection application method for preventing sand dune from flowing. The photovoltaic power generation solar panel comprises a foundation, a first groove is formed in the foundation, the inner wall of the first groove is fixedly connected with a foundation bottom plate, the upper surface of the foundation bottom plate is fixedly connected with a foundation base, soil is arranged above the foundation, a windproof and dustproof net is arranged above the foundation, and the windproof and dustproof net is fixedly connected with the foundation bottom plate. Grass checks are fixedly connected to the upper portion of the foundation, and sand-proof plants are arranged on the upper surface of the soil. The photovoltaic power generation solar panel and the erection application method for preventing the dune from flowing have the functions of preventing the dune from flowing, preventing sand and wind, enhancing the stability of a supporting structure, ecological restoration and dune solidification, improving the efficiency of a photovoltaic system and prolonging the service life of the photovoltaic system.

The utility model discloses a tension-compression-resistant long-service-life ball pin assembly for a heavy truck swing arm, and relates to the technical field of ball pin assemblies. The ball pin comprises a ball pin seat, a connecting plate is mounted at the top of the ball pin seat, a ball pin body is arranged in the ball pin seat, a dust cover is mounted at the top of the connecting plate, lubricating oil channels are symmetrically and obliquely formed in the ball pin seat, and connecting assemblies are symmetrically mounted on one side of the ball pin seat. According to the split type ball pin assembly, the ball pin base, the connecting plate, the ball pin body and the connecting assembly are arranged, the ball pin base and the connecting plate are connected and fixed through the connecting assembly, so that the ball pin base is in split type connection, and at the moment, the ball pin body is taken out and inserted into the ball pin base to complete assembly connection; the connection between the ball pin seat and the connecting plate can be quickly released by operating the connecting assembly, and then the ball pin body is taken out for replacement, so that the maintenance cost and potential safety hazards are greatly reduced.

The utility model relates to the technical field of seasonings, in particular to a seasoning plate type ozone generator which comprises an ozone generator body, the bottom of the ozone generator body is communicated with a discharging pipe, a filtering layer is installed in the ozone generator body, and a scraping plate rotating in an attached mode is arranged on the surface of the filtering layer. A lifting rotating mechanism is installed at the top of the scraping plate, a mounting frame is installed on the back face of the ozone generator body, a second motor is fixed to the end of the mounting frame, a rotating rod is fixed to the output end of the second motor, a cooling fan is connected to the outer portion of the rotating rod in a sleeving mode, and a detachable net frame is arranged on the surface of the mounting frame. According to the seasoning plate type ozone generator, the scraping plate is arranged to scrape and clean impurities on the surface of the filtering layer, the situation that the filtering effect is affected due to the fact that manual cleaning is not timely is avoided, heat in the ozone generator can be dissipated, short circuit caused by too high heat is avoided, and potential safety hazards are reduced.

Methods, apparatuses, assemblies, and / or the like are provided. An example apparatus may include a housing assembly including a first component and a second component configured for selective attachment to the first component, the first component having a first annular portion and the second component having a second annular portion opposite the first annular portion, the first and second annular portions collectively defining a central opening of the housing assembly, the central opening defining a longitudinal axis of the housing assembly. An example apparatus may also include a fan assembly, which may include a fan having an airflow opening and a fan housing, wherein: the second component has a curved portion extending from the second annular portion and along the longitudinal axis, the curved portion having an opening formed therethrough, the opening defining at least one airflow passage extending from an exterior surface of the curved portion to an interior surface.

The invention discloses a full-automatic pipe coiling machine. The full-automatic pipe coiling machine comprises a frame, a coiling device, a pipe clamping device and a brake mechanism, the tops of the two sides of the frame are each provided with a support. The reel device comprises a winding drum and a supporting shaft, and a hose is wound on the winding drum; the winding drum is rotationally connected with the two supports through a supporting shaft, and a coil spring is further arranged between the winding drum and the supporting shaft. The pipe clamping device is located on one side of the winding drum and used for controlling the winding drum to rotate or be fixed. The brake mechanism is located on the other side of the winding drum and used for controlling the rotating speed of the winding drum. The device is simple in structure, convenient and rapid to operate, capable of achieving rapid inflation operation in a limited deck space, capable of automatically recycling the inflation hose after inflation operation is completed, small in size and small in occupied space, and interference of disordered decks on other operations is avoided.

The utility model relates to the field of display screens, in particular to a spliced LED display screen. Comprising a screen body, one side of the screen body is fixedly connected with a fixing frame, one end of the fixing frame is provided with a limiting structure, the limiting structure comprises four limiting blocks, the limiting blocks are fixedly connected with the fixing frame, first round holes are formed in the limiting blocks, the two sides of each limiting block are slidably connected with sliding rails, and the sliding rails are arranged in the first round holes. Second round holes are formed in the two ends of the sliding rail, a fixing plate is fixedly connected to the surface of the sliding rail, an inserting rod is slidably connected into the fixing plate, and the arc face of the inserting rod is slidably connected with the first round holes and the second round holes. The splicing type LED display screen solves the problems that according to the splicing mode of a traditional display screen, the display screen is fixed to a support through screws, but when the display screen is used for a long time and the screws are disassembled repeatedly, the screws are prone to slipping and rusting, and therefore the installation stability of the display screen is affected.