30results about How to "Automatically fold" patented technology

The invention relates to a multifunctional smart home shoe cabinet and a using method. The internal space of a shoe cabinet body is partitioned into multiple independent rectangular cavities through amiddle partition plate and multiple horizontal partition plates; a steering engine shoe pushing device used for pushing out shoes is installed inside each rectangular cavity; a lifting mechanism is arranged at the front end of the shoe cabinet body in the height direction of the shoe cabinet body, and a horizontal conveying device used for horizontally conveying the shoes is cooperatively installed on the lifting mechanism; a reciprocating sweeping mechanism for cleaning the shoes is installed inside the rectangular cavity in the bottom layer; a fingerprint recognition module is installed atthe top of the shoe cabinet body and connected with a main control chip. The multifunctional smart home shoe cabinet is convenient to use, easy to operate, high in cleanliness, high in intellectualization degree and more friendly to users, the sterilizing and disinfecting effect is good, the time and labor are saved, and the cabinet body is more convenient to move.

The invention discloses an overflow and anti-blocking dam structure for water conservancy projects. The overflow and anti-blocking dam structure comprises a dam crest, a dam middle body and a dam baseand is characterized in that a gate pier is arranged on the dam crest, a gate is arranged in the gate pier, a bridge for mounting gate opening and closing equipment is arranged on the gate pier, a control chamber is arranged on the bridge, a first overflow channel and a second overflow channel are arranged in the dam middle body from top to bottom, a third overflow channel and a sand discharge channel are arranged in the dam base from top to bottom, a bottom pier is arranged on the right of the dam base, a lower ogee section is arranged between the bottom pier and the dam crest, a generator set room is arranged on the bottom pier, a hydroelectric generator rotor is arranged on the generator set room, and a spiral conveying belt for conveying sand is arranged on the left in the sand discharge channel. The overflow and anti-blocking dam structure with the sand discharge device and the power generation device is high in sand discharge and flood discharge capacity, large in water storageheight and convenient to maintain.

The invention aims to provide a spray nozzle suspending system for an unmanned aerial vehicle for plant protection. The system is mounted at the bottom of the unmanned aerial vehicle and comprises a first rotary plate, a second rotary plate, a spray nozzle fixing frame, a shifting lever angle adjusting device, a rotating shaft connected with a motor, a locking telescoping rod and a spray nozzle, wherein the first rotary plate is connected on the rotating shaft through a bearing, the second rotary plate is fixedly connected to the rotating shaft, a spray nozzle fixing base is arranged on the lower side of the second rotary plate, the spray nozzle fixing frame is fixed on the first rotary plate and used for fixing the spray nozzle, limiting lug pieces are symmetrically arranged on the secondrotary plate, folding rods of the spray nozzle fixing frame are located between two parallel baffles of the limiting lug pieces, the locking telescoping rod is used for locking the first rotary plate, and the shifting lever angle adjusting device is used for adjusting the orientation of the spray nozzle. The spray nozzle suspended by the system can realize 360-degree spraying and can be automatically fixed when not used for spraying, and the flight safety is guaranteed.

The invention discloses a biological floating island with an automatic sunshade function. The biological floating island comprises a biological floating island, wherein a hollow tube is fixedly connected with the center of the upper end of the biological floating island; a glass cover is mounted at the upper end of the hollow tube; a shape memory alloy is fixedly connected with the top inside theglass cover; a rotating rod is fixedly connected with the lower end of the shape memory alloy; the lower end of the rotating rod extends into the hollow tube; a plurality of arc-shaped holes are formed in the side wall of the hollow tube at equal intervals in a circumferential direction; fixing rods are fixedly connected with side walls of the hollow tube between two adjacent arc-shaped holes; a plurality of pull rods are fixedly connected with the side wall of the rotating rod in the circumferential direction; tail ends of the plurality of the pull rods respectively penetrate through multiplecorresponding arc-shaped holes; and opposite side walls of the pull rods and the fixing rods are both connected with folding sunshade cloth. The biological floating island is reasonable in structure,and the folding sunshade cloth can be automatically opened to shade sunshine in case of intensive sunshine and high temperatures.

The invention relates to the technical field of intelligent equipment, and discloses an intelligent floor sweeping robot capable of adjusting the contact area according to the abrasion degree. The intelligent floor sweeping robot comprises a shell, a sliding rod is slidably connected to the interior of the shell, a friction plate is fixedly connected to the inner wall of the sliding rod, an elastic rope is fixedly connected to the inner top of the shell, a driving wheel is fixedly connected to the interior of the shell, a top ball is fixedly connected to the interior of the driving wheel, a clamping rod is fixedly connected to the side, away from the axis of the driving wheel, of the top ball, a drive wheel is connected to the outer side of the driving wheel in a sleeving mode, and drive teeth are movably connected to the outer side of the drive wheel. According to the intelligent floor sweeping robot capable of adjusting the contact area according to the abrasion degree, the driving wheel stops rotating to make the drive wheel stop rotating, the drive wheel enables the sliding rod to ascend under the action of the elastic rope, the sliding rod drives a driving shaft to ascend, thedriving shaft drives a fixing block to ascend, then the fixing block and a cleaning brush are used in cooperation, and therefore, the effect that the sweeping brush can be automatically folded is achieved.

The invention relates to a protection device, in particular to a protection device for an open-air charging pile of a new energy automobile. The technical aim is to provide the protection device for the open-air charging pile of the new energy automobile, and the device can protect the charging pile in heavy rain weather and does not allow rainwater to soak the charging pile. The protection device for the open-air charging pile of the new energy automobile comprises a mounting frame, a cover plate, a lifting device, supports, a water level sensor and the like; the top of the mounting frame is covered with the cover plate; the lifting device for lifting a charging pile body in a rotating manner is arranged between the mounting frame and the cover plate; and the supports are arranged on the left side and the right side of the top of the cover plate. According to the protection device for the open-air charging pile of the new energy automobile, when heavy rain falls, the charging pile body can be lifted, so that the bottom of the charging pile body can not be soaked by water, when the charging pile body encounters wind and rain weather, the important position of the charging pile body can be shielded, rain is prevented from floating on the important position of the charging pile body, and thus the charging pile body can be protected in all directions in heavy rain weather.

The invention discloses a river course decontamination device. The river course decontamination device comprises a transmission box, a suction pump and a net bag, wherein the transmission box is positioned under the suction pump, a support is arranged at the right part of the transmission box, a first telescopic air cylinder and a second telescopic air cylinder are arranged on the support, a firstgear is fixed on the first telescopic air cylinder, a second gear is fixed on the second telescopic air cylinder, the first gear and the second gear are the same in structure and are meshed with eachother, an air pump and a third driving motor are arranged at the left part of the transmission box, the air pump is connected with the first telescopic air cylinder and the second telescopic air cylinder, a belt transmission is arranged between the third driving motor and the first telescopic air cylinder, the left part of the suction pump is provided with a sewage discharge pipe, the right partof the suction pump is provided with a sewage suction hose, and the sewage suction hose is connected with the tail part of the net bag. According to the river course decontamination device, the suction pump and the net bag are cooperatively used, so that garbage in a river channel can be automatically sucked, the cleaning efficiency is high, manpower is saved, the net bag can be automatically unfolded and folded, the decontamination area is large, and the space is saved.

The invention discloses an anti-advertisement-plugging structure for hotel rooms. The anti-advertisement-plugging structure comprises a door frame, a room door, a room internal wall and a floor. The door frame and the room door are connected by a hinge. The lower end of the back face of the room door is fixedly connected with a mounting shell. A mounting slot is formed in the bottom of the mounting shell. The mounting slot is internally and slidably connected with a sliding plate, a limiting mechanism is further connected to the side wall of the sliding plate, a plurality of first springs arefixedly connected between the upper end of the sliding plate and the top wall in the mounting slot, and the end, away from the first springs, of the sliding plate is located outside the mounting slotand is welded with a horizontally disposed anti-plug block. An arc-shaped bump matched with the anti-plug block for use is fixedly installed on the surface of the floor. The anti-advertisement-plugging structure can prevent other people from inserting sales advertisements into the hotel rooms, thereby maintaining business image of a hotel, avoiding adverse effects on customers and reducing garbagepollution; and meanwhile, the sound insulation effect of the rooms can be improved to enable the accommodation experience of customers to be better.

The invention belongs to the field of English practice, in particular to a speech corrector for English practice. Aiming at the problem that most existing voice correction devices cannot isolate external interference, and the practice effect is affected, the corrector provided comprises a practice room, a sound insulation door plate is hinged to one side of the practice room; a display and a player are fixedly mounted on the inner wall of one side of the practice room; a recorder is fixedly mounted on the inner wall of the top of the practice room; a supporting seat is fixedly mounted on the inner wall of the bottom of the practice room; a sliding groove is formed in the top of the supporting seat. Through the arrangement of the practice room and the sound insulation door plate, external noise can be isolated, the practice effect is improved, meanwhile, the microphone can be automatically put down during practice, the microphone can be automatically put away after practice is finished,the use position and use angle of the microphone can be adjusted, and the adaptability is good.

The invention discloses an advertisement slipping preventing structure for hotel rooms, as well as a using method of the advertisement slipping preventing structure. The advertisement slipping preventing structure comprises a doorframe, a door, a room interior wall and a floor, wherein the doorframe is connected with the door through a hinge; a mounting housing is fixedly connected to the lower end of the back surface of the door; a mounting groove is formed in the bottom of the mounting housing; a sliding plate is in sliding connection to the inner part of the mounting groove; a limiting mechanism is also connected to the side wall of the sliding plate; a plurality of first springs are fixedly connected between the upper end of the sliding plate and the inner top wall of the mounting groove; a slipping preventing block which is horizontally arranged is welded to a position outside the mounting groove, away from one ends of the first springs, of the sliding plate; and an arc-shaped protrusion block which cooperates with the slipping preventing block to use is fixedly mounted on the floor surface. Through the adoption of the advertisement slipping preventing structure disclosed by the invention, the situation that other people slip marketing advertisements to the inner part of the hotel room can be avoided, so that the firm image of the hotel can be maintained, adverse influenceon a customer is avoided, and rubbish pollution can also be reduced; and besides, anacoustic effect of the room can be improved, so that the living experience of the customer is better.

The invention relates to an auxiliary device for stringing and knotting, and in particular, relates to an auxiliary device for chalcedony stringing and knotting. The technical problem of the inventionis how to provide the auxiliary device for stringing chalcedony, wherein the auxiliary device is convenient for assisting in stringing the chalcedony and can be used for collecting redundant chalcedony again. The auxiliary device for chalcedony stringing and knotting comprises a base, a supporting column, a slope groove frame and the like. The supporting column is arranged at the top of the baseand provided with the slope groove frame. Rollers on the two sides are matched, so the chalcedony can be conveniently, quickly and tidily arranged together, and the trouble of manual arrangement is saved; a material pushing plate is matched with a device on the material pushing plate, so the redundant chalcedony can be automatically collected by the device without cooperation of another worker, and the working efficiency of the worker is improved to a certain extent; through cooperation of a cutter and a device on the cutter, a fine line can be quickly cut off, the worker does not need to makedirect contact with a cutter head, and the effect of guaranteeing safe operation of the device is achieved.

The invention provides a supporting leg oil cylinder control device of a vehicle. The device comprises an energy accumulator, a parking brake, a parking hydraulic cylinder, a first manual reversing valve, an oil tank, a hydraulic pump, a supporting leg oil cylinder, a third manual reversing valve, a first hydraulic control reversing valve, a second hydraulic control reversing valve and a third hydraulic control reversing valve. An execution port of the first manual reversing valve communicates with a first oil inlet of the first hydraulic control reversing valve, a control port of the first hydraulic control reversing valve and a second oil inlet of the second hydraulic control reversing valve respectively; and an execution port of the third manual reversing valve communicates with a second oil inlet of the first hydraulic control reversing valve, a control port of the second hydraulic control reversing valve and a first oil inlet of the second hydraulic control reversing valve respectively. According to the invention, the supporting leg oil cylinder can be automatically supported on the ground when parking braking is carried out in a cab at the front end or in the cab at the rearend, and the supporting leg oil cylinder can be automatically folded when parking braking is relieved in the cab at the front end or in the cab at the rear end of the vehicle.

The invention provides a multi-point electric control goods bundling device for a vehicle. A motor serves as a power device, power is transmitted to a large belt wheel (12) and a threaded shaft (6) through a speed reducer, a coupler, an input shaft (5), an electromagnetic clutch (4) and a synchronous cog belt (13), and a small belt wheel (2) is connected with an armature (3). A control system controls power transmission through the clutch, and tightening and loosening of a bundling belt are achieved by controlling the threaded shaft to rotate forward and reversely. After goods are tightly bundled, the large belt wheel is pressed through a ratchet wheel (11), a left friction plate and a brake check ring (8) to prevent the bundling belt from being loosened. Self-locking of ratchet wheel mechanisms (10 and 11) is achieved. A force measuring sensor (15) is used for measuring pressure borne by a shaft end of the threaded shaft, and the pressure is fed back to the control system so that the control system can judge whether the bundling belt is tightened. When the goods are unloaded, the motor rotates reversely and the bundling belt is loosened. The right end of the input shaft is connected with the coupler and other input shafts so that multiple bundling devices can be connected.

The invention provides a multi-functional automatic clothes hanger. The hanger comprises an airing module, a clothes hanger, a wardrobe, a transfer module, a dragging module and a solar cell panel and is characterized in that a first support seat of the airing module is installed at the end part of a second dragging plate through a joint; the clothes hanger is arranged on a hook of the airing module and a sliding rail of the wardrobe; the lower end surface of a fourth installing seat of the dragging module is fixedly installed on an upper end surface of a third installing seat of the transfer module through a bolt; a lower end surface of a second installing seat of the transfer module is fixedly installed on an upper end surface of a first installing seat of the wardrobe; and the solar cell panel is fixedly installed on a support on the upper end surface of a wardrobe rack. The multi-functional automatic clothes hanger has following beneficial effects: the multi-functional automatic clothes hanger is capable of automatically hanging clothes and drying; the clothes can be stored in case of weather changes; functions of lighting and supplying electricity are fulfilled; and the hanger is highly automated without consumption of energy.

The invention provides a multi-point electric control goods bundling device for a vehicle. A motor serves as a power device, power is transmitted to a large belt wheel (12) and a threaded shaft (6) through a speed reducer, a coupler, an input shaft (5), an electromagnetic clutch (4) and a synchronous cog belt (13), and a small belt wheel (2) is connected with an armature (3). A control system controls power transmission through the clutch, and tightening and loosening of a bundling belt are achieved by controlling the threaded shaft to rotate forward and reversely. After goods are tightly bundled, the large belt wheel is pressed through a ratchet wheel (11), a left friction plate and a brake check ring (8) to prevent the bundling belt from being loosened. Self-locking of ratchet wheel mechanisms (10 and 11) is achieved. A force measuring sensor (15) is used for measuring pressure borne by a shaft end of the threaded shaft, and the pressure is fed back to the control system so that the control system can judge whether the bundling belt is tightened. When the goods are unloaded, the motor rotates reversely and the bundling belt is loosened. The right end of the input shaft is connected with the coupler and other input shafts so that multiple bundling devices can be connected.

The invention relates to a protection box of a control platform and discloses a protection box of a control platform of an aerial work platform. The protection box comprises a supporting mechanism anda roller shutter mechanism, the supporting mechanism comprises a pair of supporting pieces (1) arranged on two sides of the roller shutter mechanism, the roller shutter mechanism comprises a windingmechanism, a roller shutter (2) and roller shutter slide rails (3), one end of the roller shutter (2) is wound in the winding mechanism, and a positioning mechanism is arranged at the other end of theroller shutter (2) so that the roller shutter (2) can be wound into or pulled out of the winding mechanism along the roller shutter sliding rails (3). The invention further discloses an aerial work machine. The protection box of the control platform of the aerial work platform not only can completely cover the control platform, but also has a very good operation view field.

The invention relates to the technical field of intelligent equipment, and discloses an intelligent sweeping robot capable of adjusting the contact area according to the degree of wear, including a casing, the inside of the casing is slidably connected with a slide bar, and the inner wall of the slide bar is fixedly connected with a friction plate , the inner top of the shell is fixedly connected with an elastic rope, the inside of the shell is fixedly connected with a driving wheel, the inside of the driving wheel is fixedly connected with a top ball, and the side of the top ball away from the axis of the driving wheel is fixedly connected with a A clamping rod, a driving wheel is sleeved on the outer side of the driving wheel, and driving teeth are movably connected to the outer side of the driving wheel. The intelligent sweeping robot that can adjust the contact area according to the degree of wear stops the driving wheel by stopping the rotation of the driving wheel. The driving wheel makes the slider rise under the action of the elastic rope. Through the cooperative use of the fixed block and the cleaning brush, the effect of automatically retracting the sweeping brush is achieved.

The invention discloses an ecological floating island with automatic sunshade function, comprising an ecological floating island, a hollow tube is fixedly connected to the center of the upper end of the ecological floating island, a glass cover is installed on the upper end of the hollow tube, and the The inner top of the glass cover is fixedly connected with a shape memory alloy, and the lower end of the shape memory alloy is fixedly connected with a rotating rod. A plurality of arc-shaped openings, a fixed rod is fixedly connected to the side wall of the hollow tube between two adjacent arc-shaped openings, and a plurality of tie rods are circumferentially fixedly connected to the side wall of the rotating rod. The ends of the rods respectively pass through a plurality of corresponding arc-shaped openings, and the side walls opposite to the pull rod and the fixing rod are jointly connected with a folded sunshade cloth. The invention has a reasonable structure, and can automatically open the folded sunshade cloth for sunshade when the sun is strong and the temperature is high.

The invention discloses a device for standardizing use time and automatically feeding water, which comprises a rack, a contraction cavity with an upward opening is formed in the rack, a workbench is arranged at the upper end of the contraction cavity in a sliding mode, a screw rod is fixedly arranged at the lower end of the workbench, a threaded sleeve is arranged at the lower end of the screw rodin a threaded mode, and a threaded cavity with an upward opening is formed in the threaded sleeve; the screw rod is rotatably connected in the threaded cavity, and restriction blocks are respectivelyfixed on the inner walls of the left and right sides of the contraction cavity. By means of the device, people can conveniently reduce the time loss of taking water back and forth, the concentrationdegree of people in the using process is improved, after the using upper limit is reached, the working platform can be automatically folded, the body of a user is prevented from being damaged in the long-time use process of the user, and when the device is forcibly damaged by a person, the alarm device can be started, so that people around the device can know and stops the motion.

The invention relates to the technical field of surveying devices, and discloses a high-precision surveying device for urban and rural planning, which includes a total station and a frame body. A connecting block is fixedly connected to the upper surface of the frame body, and a hollow space is opened inside the connecting block. cavity, the outer wall of the connection block is provided with a relief groove, and a buffer support is arranged in the relief groove, and a first cavity is opened in the connection block below the relief groove, and a first cavity is provided in the first cavity A sliding plate, the upper surface of the sliding plate is fixedly connected with a stopper. In the present invention, by setting the connecting block, the tipping trigger piece and the cushioning support piece together, when the device is tilted, the tipping trigger piece pushes the push rod, and the pushed push rod is pressed open by the cooperation of the second trapezoidal block and the slide plate, etc. The first trapezoidal block makes the buffer support unblocked and unfolded, so that the buffer support can buffer the force of the device falling and falling, thereby protecting the total station and avoiding damage to the total station.

The invention discloses isolation cone automatic collecting and releasing equipment which comprises a moving device, a lifting device, a power supply system, a lighting warning system and a video recording system, the moving device is installed at the lower end of the tail of a truck breast board, the lifting device is connected with the moving device, and the lifting device is driven to move in the same direction through left-right movement of the moving device. In the operation process, the lifting device, the moving device, the power supply system, the lighting warning system and the video recording system are coordinated and matched to complete placement and collection of the isolation cone. The equipment can automatically place and collect the isolation cones made of any materials and in any shapes, and is suitable for maintenance of expressways and urban highways and diversion or road closure operation of temporary highways.

The invention provides an article placing device applied to the technical field of daily supplies. An upper connecting shaft (6) is arranged between an upper connecting block I (4) and an upper connecting block II (5) of a device bottom plate (1) of the article placing device, an upper connecting shaft (6) is movably sleeved with an upper plate rear part (8) of an upper placing plate (7), one sideof the upper plate front part (9) of the upper placing plate (7) is connected with one side of the upper part of the device bottom plate (1) through an upper spring I (10), the other side of the upper plate front part (9) of the upper placing plate (7) is connected with the other side of the upper part of the device bottom plate (1) through an upper spring II (11), and the article placing deviceis simple in structure, can be conveniently and rapidly unfolded and folded according to use requirements, does not occupy space when folded, can be used for hooking articles, can place large articleswhen unfolded, can be automatically folded after the articles placed when unfolded are taken away, and is convenient to use.

The invention relates to the technical field of air bag air suspensions, and in particular relates to a single-axle four-air-bag air suspension which comprises a chassis, an upper connecting seat, air bags, supporting mechanisms, hinge seats, supporting plates, a bearing shaft and U-shaped hoops, the two ends of the bearing shaft are fixedly connected with the two sets of supporting plates through the U-shaped hoops, the two ends of the supporting plates are hinged to the supporting mechanisms with a protection function through two sets of hinge seats, the air bags are arranged on the supporting mechanisms, one end of each air bag is connected with the chassis through the upper connecting seat, the upper connecting seat pulls mesh cloth, the mesh cloth moves to drive a first pin roller and a second pin roller to move, and the first pin roller rotates to enable a coil spring in a coil spring device to deform; when the air bags are deflated, as the chassis descends, under the action of the coil spring in the coil spring device, the first pin roller rotates reversely, the mesh cloth is stuffed into a retracting and releasing groove through reverse rotation of the first pin roller; in conclusion, with setting of the mesh cloth, in the running process of the vehicle, the air bags are prevented from being damaged by broken stones, the protection effect on the air bags is achieved, and then when the air bags are not used, the mesh cloth can be automatically retracted.

The invention relates to an auxiliary device for stringing, in particular to an auxiliary device for chalcedony stringing. The technical problem of the present invention is how to provide an auxiliary device for chalcedony stringing, which is convenient for assisting in stringing chalcedony and can put away excess chalcedony. An auxiliary device for chalcedony stringing, including a base, a supporting column, an inclined groove frame, etc.; a supporting column is arranged on the top of the base, and an inclined groove frame is arranged on the top of the supporting column. Through the cooperation of the rollers on both sides, the present invention is convenient to quickly and neatly arrange the chalcedony together, which saves the trouble of manual arrangement, and through the cooperation of the pushing plate and the upper device, the equipment can automatically collect the redundant chalcedony From the beginning, there is no need for another worker to cooperate with the receiving material, which improves the work efficiency of the worker to a certain extent. Through the cooperation of the cutter and the upper device, the thin wire can be cut off quickly, and the worker does not need to directly touch the cutter head. In order to ensure the effect of safe operation of equipment.

The invention discloses an anti-clogging advertising structure for hotel rooms, comprising a door frame, a door, a room inner wall and a floor, the door frame and the door are connected by a hinge, and the back and lower end of the door is fixedly connected with an installation shell , the bottom of the installation shell is provided with an installation groove, the inside of the installation groove is slidably connected with a sliding plate, the side wall of the sliding plate is also connected with a limit mechanism, and the upper end of the sliding plate is fixedly connected with the inner top wall of the installation groove. A first spring, the end of the sliding plate away from the first spring is located outside the installation groove and is welded with a horizontally arranged anti-blocking block, and the floor surface is fixedly installed with an arc-shaped protrusion used in conjunction with the anti-blocking block. The present invention can prevent others from inserting promotional advertisements into hotel rooms, thereby maintaining the business image of the hotel, avoiding adverse effects on customers, and reducing garbage pollution; at the same time, it can improve the sound insulation effect of the room and make customers have a better accommodation experience .

The invention relates to a clothes hanger, in particular to a dust-proof clothes hanger which is convenient for storage and storage. The technical problem to be solved by the present invention is to provide a dust-proof clothes hanger that can adapt to people of various heights and is easy to store. A dust-proof hanger that is easy to store and store, comprising: a base, with slide grooves on both sides of the base; a bracket, installed on both sides of the base, and one side of the bracket is slidably matched with the slide groove; a support component, installed on the bracket ; The fixed component is installed on the base; the clothes hanging component is installed on the supporting component. The invention has a dust-proof component, which can effectively prevent the clothes from falling into dust, thereby reducing the trouble of cleaning after storage; the invention has a swing component, which enables the device to automatically put away the dust-proof cloth, and does not require the user to manually control the dust-proof Cloth, thereby reducing the user's trouble; the invention has a placement component, which can facilitate the user to place small pieces of clothing, and can also make full use of the space of the hanger.

The invention discloses a multifunctional vehicle teaching aid display device, which comprises a rectangular base, an automatic opening mechanism is arranged above the rectangular base, a booth lifting mechanism is arranged at the upper end of the rectangular base, and multiple As for the angle display mechanism, a mechanical locking mechanism is arranged above the rectangular base. The beneficial effect of the present invention is that the mold can be rotated at multiple angles to achieve the effect of all-round observation, and the manual operation of repeated handling of the mold can be omitted by lifting the mold, so as to save time and effort. The function can make the model automatically retract when it is not displayed.

The invention relates to a clothes hanger and particularly relates to a dustproof clothes hanger convenient to fold and unfold. A technical problem to be solved by the invention is to provide the dustproof clothes hanger convenient to fold and unfold, which can adapt to people of various heights. The dustproof clothes hanger convenient to fold and unfold comprises a base, wherein sliding grooves are formed in the two sides of the base; supports which are installed on the two sides of the base, and the support on one side is in sliding fit with the sliding groove; a supporting assembly which ismounted on the bracket; a fixing assembly mounted on the base; a clothes hanging assembly installed on the supporting assembly. The clothes hanger is provided with the dustproof assembly, dust can beeffectively prevented from falling on clothes, and then the trouble of cleaning after storage is reduced; the clothes hanger is provided with the swing assembly, so the device can automatically foldthe dustproof cloth, a user does not need to manually control the dustproof cloth, and the trouble of the user is reduced; the clothes hanger is provided with the placing assembly, so a user can placesmall clothes conveniently, and the space of the clothes hanger can be fully utilized.

The invention belongs to the field of communal facilities, and particularly relates to a self-protection urban heat removal well based on a chemical reaction. The self-protection urban heat removal well comprises a well body, an annular protection cavity is formed in the side wall of the upper end of the well body, a protection cover is slidably connected in the annular protection cavity, a coverplate is closed on the well body, and the cover plate is fixedly connected with the protection cover through a connecting rod; and a plurality of exhaust holes are formed in the cover plate, a worm and a rotating shaft are rotationally connected in the well body, and a linkage mechanism is arranged between the worm and the rotating shaft. According to the self-protection urban heat removal well, by utilizing the reaction characteristics of sodium bicarbonate and matching with the heat removal process, the protection cover can be automatically lifted or retracted under the action of a driving mechanism, the linkage mechanism and a lifting mechanism, so that the trouble of carrying the protection cover back and forth manually each time is avoided, and manpower is greatly saved; and power equipment is not needed in the driving process, and thus the cost is greatly saved.