45results about How to "Retractable and stable" patented technology

The invention discloses an electric paying-off automobile, and belongs to the technical field of electric winding-up and paying-off devices of cables. The electric paying-off automobile is flexible to move and convenient to use. According to the technical scheme, the electric paying-off automobile comprises an automobile frame, a triangle supporting frame, a cable wheel, hydraulic jacks and a hydraulic drive device; the triangle supporting frame is hinged to the tail end of the automobile frame through a supporting rod; the number of the hydraulic jacks is two; the ends of piston rods of the hydraulic jacks are hinged to sides opposite to the peak of the triangle supporting frame respectively; both the ends of cylinder bodies of the hydraulic jacks are hinged to the automobile frame. The electric paying-off automobile is applied to all kinds of electric power and communication departments.

The invention discloses an intelligent electrically-driven cable arranging device of a marine winch. The device is that two groups of three-phase asynchronous motors are respectively connected with a power supply through transducers and are connected with a main shaft of a roller through a planetary gear; a permanent magnet synchronizing motor drives a rolling lead screw supported by a bearing to rotate by speed reduction through a speed reducer; the rolling lead screw drives a cable guide wheel to move leftwards and rightwards on a guide rail; a cable is arranged on the roller through a cable width sensor and the cable guide wheel; a first proximity switch and a second proximity switch are respectively mounted at two ends of the rolling lead screw; signals detected by a roller rotating speed detecting photoelectric encoder, a motor rotating speed photoelectric encoder and a photoelectric encoder are respectively input to an intelligent controller; the intelligent controller controls the working states of the three-phase asynchronous motors and the permanent magnet synchronizing motor. The device has the advantages of being good in cable arranging effect, reliable to work, high in real-time performance, automatic to adjust the working state according to the cable width, and capable of continuously working under a complex marine working environment.

In order to solve the problems that in the prior art, according to an extension and retraction system, parts are too many, the structure is complex, the occupied size is large, and design needs to be further simplified, the invention provides an unmanned aerial vehicle. The unmanned aerial vehicle comprises a vehicle body, multiple supporting bases fixedly arranged on the vehicle body, multiple folding mechanisms hinged to the supporting bases through rotating shafts and multiple retracting mechanisms driving the folding mechanisms to rotate; each retracting mechanism comprises a motor, a worm and a worm gear; the worms are fixedly mounted an output shaft of a motor, the worms and the worm gears are correspondingly engaged, the worm gears are fixedly connected with the folding mechanisms, the rotating shafts are coaxial, and therefore the worms can drive the worm gears and the folding mechanisms to rotate around axes of the rotating shafts. The unmanned aerial vehicle is simple and reliable in structure, small in occupied space, large in bearing strength, high in transmission efficiency, convenient to operate and low in cost.

The invention belongs to the field of machine design and manufacturing-high grade numerical control machine tool and basic manufacturing equipment, and relates to large-scale seven-shaft linkage numerical control laying and winding integrated forming equipment. A main machine which is formed by three linear shafts and one rotating working table rotating shaft, and a laying and winding head which is driven by three rotating shafts are adopted to composite three translation movement and four rotation movement to achieve laying and winding head spatial motion track control and workpiece rotation.A conveying belt u shaft is adopted to drive winding and rewinding of a cloth belt and speed adjustment to achieve eight-shaft control seven-shaft linkage laying, and therefore automatic forming of acomposite material skin structure with all kinds of spacial special-shaped hook surfaces is achieved. The spatial motion track of the laying winding head can be directly controlled, even a workpiecewith the special-shaped hook surface can be accurately attached to the surface of the laying winding head for laying and winding, and therefore forming operation of material cutting after solidifyingand forming can be reduced and even avoided. Pollution is reduced, the cost is saved, and efficiency is improved. The automatic tow placing technology provides an equipment platform suitable for engineering application research and manufacture.

The invention discloses a marine knuckle crane which comprises a base, a tower body, a main lazy arm, an auxiliary lazy arm, a lifting winch, a first oil cylinder and a second oil cylinder. The base is fixed to the side of a ship, the tower body is fixed to the base, and a cab is arranged at the front end of the tower body. The main lazy arm is hinged to the upper end of the tower body. The two ends of the first oil cylinder are hinged to the tower body and the bottom face of the main lazy arm correspondingly. The main lazy arm is controlled by the first oil cylinder to be folded. The auxiliary lazy arm is of a bent structure, and one end of the auxiliary lazy arm is hinged to the front end of the main lazy arm. The two ends of the second oil cylinder are hinged to the bottom face of the main lazy arm and the bent point of the auxiliary lazy arm. The auxiliary lazy arm is controlled to be supported or retract. The lifting winch is mounted on the upper end face of the main lazy arm, andsteel wire rope guide is carried out through a guide wheel mounted on the main lazy arm and the auxiliary lazy arm.

The invention provides a kitchen chopping board rack. The rack body made of stainless steel is provided with several supporting rods arranged at intervals to form a placement groove. There is a retaining rod on one side of the supporting rods, and an inclined leaning rod on the other side. The lower part of the frame is provided with several distributed poles. When in use, the cutting board used in the kitchen can be leaned sideways on the leaning bar, and the side of the cutting board can be placed on the supporting rod, so that the idle cutting board can be stably retracted, which not only reduces the occupied space, but also can The cutting board can be retracted by filtering water, and since several supporting rods arranged at intervals are arranged on the frame body, various square, rectangular and circular cutting boards can be adapted to be placed.

The invention discloses a novel rotary distributing device, belonging to the field of lime shaft kiln distributing equipment. The novel rotary distributing device comprises a feed hopper, a rotation body, a supporting seat, a driving device, a distributing pipe, a receiving spoon and a winch, wherein the feed hopper is fixed on the rotation body and is vertically connected with the distributing pipe at the lower part, and the rotation body and the driving device are arranged on the supporting seat; the driving device is in meshing transmission with a driven gear on the rotation body through abevel gear, and the receiving spoon is arranged on a fixed shaft under the distributing pipe in a sleeving mode through a shaft sleeve; the supporting seat is fixedly arranged on the distributing pipe; and the winch is arranged on the supporting seat and is connected with the receiving spoon through double steel wire ropes. The novel rotary distributing device uses the winch to control the steel wire ropes to be rewound, thereby realizing the angle of inclination adjustment of the receiving spoon. The operation is convenient. By adopting the double steel wire ropes, the novel rotary distributing device ensures steady rotation and stable blanking of the receiving spoon.

The invention provides a winding displacement lifting type fireproof roller shutter. The winding displacement lifting type fireproof roller shutter comprises a shutter surface, a lifting mechanism and guide rails; the winding displacement lifting type fireproof roller shutter is characterized in that the lifting mechanism is formed by a fireproof electric hoist, one or multiple rolling shafts, a transmission mechanism, universal couplers which are connected between every two adjacent rolling shafts, multiple fixed pulleys which are arranged on a top support of a building door opening, multiple rope wheels which are arranged on the rolling shafts and multiple lifting steel wire ropes which are horizontally and uniformly distributed on the shutter surface; the top end of the shutter surface is fixedly arranged on the top support of the building door opening; one end of each lifting steel wire rope is fixedly arranged at the bottom part of the shutter surface, and the other end of each lifting steel wire rope can ascend along the shutter surface and is fixedly arranged on the corresponding rope wheel by passing through the corresponding fixed pulley. Compared with an existing fireproof roller shutter, the winding displacement lifting type fireproof roller shutter is adapted to a large-span fireproof zone, a curved fireproof zone and a relatively-complex installation environment.

The invention discloses an air guided vehicle. The air guided vehicle comprises an I-shaped rail, a travelling mechanism, a winding mechanism and a material taking mechanism, wherein the travelling mechanism is arranged on the I-shaped rail, the winding mechanism is arranged below the I-shaped rail, and the material taking mechanism is arranged below the winding mechanism; and the travelling mechanism walks along the I-shaped rail and drives the winding mechanism and the material taking mechanism to move, and the winding mechanism drives the material taking mechanism to move up and down. According to the air guided vehicle, the structure is simple and small, the air guided vehicle can be used for light-load transportation, the material distribution requirements of an SMT workshop can be perfectly met, and meanwhile, a foundation is provided for the suspension operation of the air guided vehicle; and the air guided vehicle is optimized and innovated on the basis of the air logistics transportation concept, a precise air material transportation rail is adopted, so that the space during transportation is greatly reduced.

The invention relates to a winding device. The winding device comprises a frame, a winding drum rotatably arranged on the frame and a motor used for driving the winding drum to rotate; a rope receiving groove used for winding a rope body is formed in the peripheral wall of the winding drum; the rope receiving groove spirally extends on the peripheral wall of the winding drum; a guide wheel used for leading out the rope body from the rope receiving groove is further arranged on the frame; with the axis direction of the winding drum as the transverse direction, the guide wheel is arranged on theframe in the mode of being capable of moving transversely; and a transverse moving mechanism used for driving the guide wheel to move transversely is arranged on the frame. According to the winding device, the rope body is wound on the rope receiving groove; the winding drum is driven by the motor to rotate for taking up and paying off; and the wire guide wheel and the rope body are driven by thetransverse moving mechanism to transversely move during taking up and paying off, so that the rope body can be tidily wound in the rope receiving groove and orderly released from the rope receiving groove, and the rope body is more stably taken up and paid off. The invention further provides a parachuting system adopting the winding device, and the parachute landing system adopting the winding device can stably wind and unwind the rope body.

The invention provides a constant-force and constant-speed electric capstan, belongs to the technical field of machinery and solves the problem that a conventional capstan is instable in operation. The constant-force and constant-speed electric capstan comprises an enclosure, a winding drum, a motor, a speed reducer, at least one traction drum and a differential, wherein the winding drum is arranged in the enclosure and used for winding a wire rope; the motor is provided with a motor shaft which penetrates the winding drum, and the winding drum can horizontally move on the motor shaft when the motor rotates; the speed reducer is arranged at the end, far away from the motor, of the winding drum and connected with the motor shaft; one of the traction drums is connected with the speed reducer through a connecting shaft and used for receiving the wire rope output by the winding drum, and the received wire rope is conveyed out of the enclosure; and the differential is arranged in the enclosure and connected with the speed reducer. The constant-force and constant-speed electric capstan has the advantage of being stable in operation.

The invention discloses a machining device and method for the sharpness of an antenna target plate. The machining device comprises a target plate transferring mechanism, a conveying mechanism, a sand blasting mechanism and a protective shell. The protective shell comprises a target plate bottom support and a target plate upper cover, the target plate upper cover is buckled on the target plate bottom support, and the protective shell is used for placing a target plate; the target plate transferring mechanism is used for transferring the protective shell to the conveying mechanism; the sand blasting mechanism comprises a sand blasting pool and a plurality of sand nozzles, and the sand nozzles are used for blasting sands to the target plate; and the conveying mechanism comprises two groups of conveying plates which are oppositely arranged, two conveying chains and a second motor, each group of conveying plates comprises an outer plate and an inner plate which are oppositely arranged, one conveying chain is located between the outer plate and the inner plate, and the conveying chains are used for placing the protective shell and enabling the protective shell to move from one end of the sand blasting mechanism to the other end of the sand blasting mechanism. By using the machining device and method disclosed by the invention, uniform sand blasting can be independently conducted on bulges, so that the mechanical strength of each bulge is weakened; and after etching treatment, an antenna with the sharpness smaller than 20 microns can be obtained.

The invention discloses a connection part for a folding table surface and a hidden type folding table where the connection parts are mounted. The connection part adopts a double-hinge-shaft structure. The folding table comprises two table surfaces and two connection parts, wherein the two table surfaces are fixedly connected with upper surfaces of two-edge cross beams of the two connection parts respectively, so that when the two-edge cross beams are unfolded, inner side edges of the two table surfaces get close to each other in parallel; the outer end of one table surface is hinged to the inner surface of a back plate of a door-free vertical cabinet, and the outer end of the other table surface is hinged to a floor cabinet; preferably, the transverse width of the table surface connected with the floor cabinet is larger than that of the other table surface, accordingly, after the table surfaces are folded, the longer table surface can shield the shorter table surface, the shorter table surface is clamped and hidden between the longer table surface and the back plate of the vertical cabinet, and the floor cabinet can be correspondingly and easily moved into the vertical cabinet. The folding table has the advantages of multifunction, capability of saving space, easiness in assembly and high safety.

The invention provides a reinforcing steel bar hoisting and clamping device for constructional engineering, and mainly relates to the field of the constructional engineering. The reinforcing steel barhoisting and clamping device for the constructional engineering comprises a connector, wherein a hoisting connecting hole is formed in the center of the top of the connector, a pair of wire coils issymmetrically arranged on the two sides in the connector, torsional springs are arranged between the wire coils and the connector, a locking device is arranged on one side of each wire coil, hoistingwires are wound around the wire coils, binding cylinders are arranged at the ends, away from the wire coils, of the hoisting wires, a cross beam is arranged at the bottom of the connector, and a plurality of clamping jaws are linearly arranged at the bottom of the cross beam. The reinforcing steel bar hoisting and clamping device has the beneficial effects that reinforcing steel bars can be stablyhoisted, the two ends of the bundled reinforcing steel bars are limited, and the situation that loose bundles of the reinforcing steel bars pose a threat to ground personnel when the reinforcing steel bars are overturned is avoided.

The invention discloses a multifunctional workbench for mold design. The multifunctional workbench comprises a support and a reinforcing rod. A rotating mechanism is arranged on the outer side of theworkbench, a motor is powered on, an output shaft drives an outer frame and a sliding block to rotate, the sliding block drives a containing groove to rotate, and therefore the containing groove drives a built-in tool to rotate, and use is convenient; and meanwhile, a drawing can be placed on the top end face of a partition plate, the placed drawing is marked and explained through a label, then ahand wheel is rotated to drive a screw to rotate, and therefore a U-shaped frame moves vertically downwards under the action of the screw to clamp and fix the drawing to the top end face of the partition plate, and the beneficial effects that the drawing is rapidly and stably stored, later use is convenient, meanwhile, the tool can be conveniently rotated and used, and convenience is brought to work are achieved.

The invention discloses a hardware expansion unit structure based on computer modularization, the modular hardware expansion unit structure based on the computer comprises a mainboard and partition plates fixedly connected with two sides of the mainboard, the partition plates are used for being fixed on a computer box body, one of the partition plates is provided with a sliding groove, through holes are formed in the upper surface of the partition plate in an equidistant array mode; a connector which is fixedly connected to one end of the main board; and a limiting device which comprises a sliding block and a supporting plate, the sliding block is arranged in a channel steel shape and is slidably connected between the sliding groove and the upper surface of the partition plate, the two rack plates connected to the lead screw in a meshed mode are far away from each other, and the baffles fixed to one ends of the rack plates are also far away from each other; a unit plate needing to be expanded is placed between the two clamping plates, the two rack plates and the baffle are close to each other by reversely rotating the lead screw, and the effect of clamping the unit plate needing to be expanded is achieved.

The invention relates to a slewing gangplank. The slewing gangplank is characterized by comprising a base (1), the base (1) is arranged on a deck and provided with a slewing bearing (2), an upper bearing platform (3) is arranged on the slewing bearing (2), a slewing oil cylinder (4) is connected between the slewing bearing (2) and the upper bearing platform (3), a gangplank frame (5) is hinged to one end of the upper bearing platform (3), and a derricking oil cylinder (6) is fixedly arranged between the upper bearing platform (3) and the gangplank frame (5); a hydraulic power pack (12) and a control cabinet (13) are arranged in the slewing gangplank, the control cabinet (13) is connected to the hydraulic power pack (12) and used for controlling an oil way, the hydraulic power pack (12) is connected with the slewing oil cylinder (4) and the derricking oil cylinder (6), and a manual pump is arranged in the hydraulic power pack (12). An oil pump is driven by an engine to work so as to convert electric energy into high-pressure hydraulic energy, a worker operates a control system so that high-pressure hydraulic oil can push a piston rod of the corresponding oil cylinder, the corresponding oil cylinder stretches or retracts, derricking and slewing of the gangplank can be controlled conveniently, it is unnecessary to move the gangplank with manpower or a crane, the gangplank saves time and labor, is convenient to operate and can be folded and unfolded stably, and a storage frame on the deck can prevent the gangplank from swinging during navigation of a ship.

The invention discloses a rope ladder for metal roof board mounting and a metal roof board mounting method. The rope ladder comprises a rope ladder structure, fixed supports and purline connecting plates, and the purline connecting plates are fixedly connected with purlines through fixed bolts. The method comprises the steps that a, the purlines are mounted; b, the rope ladder structure is connected with buckles; c, the rope ladder structure is coiled; d, the rope ladder structure is mounted on the purlines; e, a rope ladder unfolding device is mounted; f, the rope ladder structure is unfolded; h, a metal roof board is mounted; i, and the rope ladder structure is dismounted. According to the rope ladder for metal roof board mounting and the metal roof board mounting method, the operation of directly mounting the rope ladder on purlines at the top of a house structure is canceled, the rope ladder structure is fixed on the fixed supports, the fixed supports are supports of rigid structures and are used as bearing components of the rope ladder structure, the gravity of the rope ladder structure and constructors is uniformly dispersed on the purlines, connection is reliable, and safetyis high.

The invention relates to an accommodation ladder device with a cloaking door. The device is characterized by comprising a door frame 1, a large door 2 is installed in the door frame 1, a small door 7 is installed inside the large door 2, a telescopic accommodation ladder 12 is installed in the small door 7, and the door frame 1, the large door 2, the small door 7 and the telescopic accommodation ladder 12 are located on the same plane. According to the accommodation ladder device with the cloaking door, due to the fact that the large door, the small door and the telescopic accommodation ladder are arranged together, occupied on-board space is reduced, and door cloaking and the accommodation ladder are integrated. The accommodation ladder can be completely concealed in the door frame, and the cloaking effect is achieved; the accommodation ladder device is hydraulically driven, meanwhile, an electric control system is arranged to control hydraulic oil to work, and therefore the accommodation ladder device is stable in deploying and retracting. When the electric control system loses power, a hand-cranking pump is additionally arranged to manually turn on and off the accommodation ladder.

The invention relates to an automatic sun shading device for a small-sized household automobile front windshield. The automatic sun shading device for the small-sized household automobile front windshield comprises a housing, magnetic bases and a sun shading fabric winding and unwinding mechanism, wherein a mounting platform is arranged in the housing; one side of the housing is arranged as an inclined surface obliquely extending outwards; a transverse through groove is formed in the inclined surface; the magnetic bases are arranged in the housing and positioned in positions, on the two sides,under the mounting platform; the magnetic bases are used for adsorption and fixing; the sun shading fabric winding and unwinding mechanism has sun shading fabric and a winding drum for winding and unwinding the sun shading fabric; the winding drum is arranged on the mounting platform; a driving motor used for driving the winding drum to rotate is connected to one side of the winding drum; and a controller is connected to the driving motor. According to the automatic sun shading device for the small-sized household automobile front windshield, the driving motor can realize complete winding orunwinding of the sun shading fabric after rotating for a designated number of turns; as a traditional limiting sensor or limiting switch control mode is replaced by using the control mode, the cost issaved, and the reliability and anti-interference ability are greatly improved; the sun shading fabric can be automatically wound and unwound; the housing can be stably mounted on a roof by using themagnetic base; and therefore, the structure is stable, and the assembling and disassembling are convenient.

The invention discloses an electric unmanned aerial vehicle undercarriage capable of rising and falling smoothly. The electric unmanned aerial vehicle undercarriage capable of rising and falling smoothly comprises an undercarriage main body, an undercarriage bracket and a controller; the undercarriage main body comprises a supporting post, a telescopic mechanism, a tripod supporting frame and twoL-shaped side plates; the supporting post is fixedly arranged between the two side plates and is positioned on transverse plates of the side plates; the tripod supporting frame is in threaded connection with the undercarriage bracket; a stress piece A and a stress piece B are positioned in a limiting groove and are respectively and fixedly arranged on the upper wall and the low wall of the limiting groove; the telescopic mechanism comprises a double-acting cylinder, an upper cover and a lower cover; the upper cover is fixed to the top of the lower cover; the double-acting cylinder is arrangedfront and back and is fixedly mounted in the lower cover. The electric unmanned aerial vehicle undercarriage capable of rising and falling smoothly has the beneficial effects of compact structure, high bearing capacity, high impact resistance and high automation degree; the undercarriage rises and falls smoothly.

The invention discloses a ditching device suitable for wide-trench large-earthwork operation and a ditching machine and a loosener. The ditching device comprises the ditching device bracket, the rearend of the ditching device bracket is provided with a driving rotation horizontal shaft, the front end of the ditching device bracket is provided with a driven rotation horizontal shaft, the driving rotation horizontal shaft and the driven rotation horizontal shaft are connected by two annular driving chains, a plurality of connecting horizontal bars provided with ditching cutters or a plurality of connecting horizontal plates provided with the ditching cutters are connected between the two annular driving chains, or the driving rotation horizontal shaft and the driven rotation horizontal shaft are connected by a conveyor belt provided with the ditching cutters. The ditching machine and the loosener adopt the above-mentioned ditching device, and have the characteristics of being small in whole machine length, power-saving, and suitable for orchard operation.

The invention discloses an underwater stabilizing system. The underwater stabilizing system comprises a hydrofoil device; the hydrofoil device comprises a hydrofoil body; in the working process of thehydrofoil device, the pressure intensity of the lower wing surface of the hydrofoil body is smaller than that of the upper wing surface of the hydrofoil body; the hydrofoil body is of a symmetrical structure; when the underwater stabilizing system is in a working state, the vertical plane which passes through the gravity center of the hydrofoil body and divides the hydrofoil body into two symmetrical parts is a first vertical plane; the system further comprises a traction device; the traction device comprises a plurality of groups of side traction assemblies; each side traction assembly comprises a side traction rope, a guide wheel and a winch; the first end of each side traction rope is wound on the corresponding winch, the second end of each side traction rope bypasses the correspondingguide wheel and then is connected with the upper wing surface of the hydrofoil body, and the mounting positions of the side traction ropes of the multiple groups of side traction assemblies on the hydrofoil upper body are symmetrically arranged; the system further comprises a power device which can drive the winch to rotate. Due to the structural design of the underwater stabilizing system, underwater equipment can keep a stable relative pose with a ship / overwater operation platform according to the use requirements of the underwater equipment.

The invention discloses a space-saving multipurpose film and television wall for interior design. The space-saving multipurpose film and television wall comprises a wall body, a television groove is formed in the front face of the wall body, a winder is installed on the upper portion of the front face of the wall body, a curtain is wound in the winder, and one end of the curtain is connected with a balance weight rod in a clamped mode; optimally, the front face of the wall body is provided with a storage groove and an air guide plate which are used for preventing flowing airflow from entering the space between the curtain and the wall body. Preferably, an adsorption mechanism enabling the curtain and the wall to be in close contact is arranged on the front face of the wall, and the adsorption mechanism comprises an air flow groove and an air outlet hole which are formed in the front face of the wall. According to the space-saving multi-purpose film and television wall for interior design, the air deflectors are arranged on the two sides of the curtain, so that when wind blows, the inclined air deflectors introduce part of wind into the storage groove and support the other part of wind, the other part of wind does not flow along the wall body any more, the effect of blocking wind for the curtain is achieved, the wind is prevented from flowing along the wall body, and when the wind makes contact with the curtain, the wind is prevented from entering the storage groove. And the curtain is blown up, so that the film watching experience is influenced.

The invention provides an expressway construction safety cone placement intelligent vehicle based on automatic driving, which is used for collecting and releasing traffic cones and comprises a vehicle body, an external groove, a lifting mechanism, a first collecting and releasing mechanism, a connection conveying mechanism and a second collecting and releasing mechanism, the external groove is detachably formed in the frame of the vehicle body, and the front side and the top of the external groove are open; the lifting mechanism comprises two vertical conveying belts, and the two vertical conveying belts are vertically and symmetrically distributed. In the advancing process of the vehicle body, traffic cones on a road enter from the width limiting door and then are attracted by the magnetic blocks on the parallel conveying belt to be separated from the ground, when the traffic cones are conveyed to the connecting conveying belt through the parallel conveying belt, the magnetic blocks are separated from the traffic cones through the separating plates, then the connecting conveying belt conveys the traffic cones to the vertical conveying belt, and the traffic cones are conveyed to the vehicle body through the vertical conveying belt. Compared with the prior art, the device has the advantages that the traffic cones do not need to be pulled down when the traffic cones are collected and released, and the traffic cones are collected and released stably and accurately through point-to-point contact adsorption between the magnetic blocks and the magnets.

The invention provides a material tray placing and storing device and a production line, and relates to the field of automatic equipment. The material tray placing and storing device comprises a mounting panel, a sliding supporting assembly, a lifting supporting assembly and a plurality of parallel conveying belts, wherein the sliding supporting assembly, the lifting supporting assembly and the plurality of conveying belts are mounted on the mounting panel; and the conveying belts are used for conveying material trays, the lifting supporting assembly is used for supporting the material trays to ascend and descend, and a sliding support can slide along the mounting panel and is used for receiving the material trays on the supporting assembly. The production line comprises the material trayplacing and storing device and further comprises feeding assembly lines which are in one-to-one butt joint with the plurality of conveying belts. According to the material tray placing and storing device and the production line, the technical problem that the material trays with various specifications and sizes are not convenient to adjust when the material tray are placed and stored is solved.

The embodiment of the invention provides an auxiliary walking frame of a curtain rolling machine and self-propelled curtain rolling machine equipment. The auxiliary walking frame of the curtain rolling machine comprises a positioning supporting piece, bearing seats and seesaws. The positioning supporting piece can be supported on the ground, the bearing seats are installed on the positioning supporting piece, and the seesaws are installed on the bearing seats in a rotatable manner. The seesaws of the auxiliary walking frame of the curtain rolling machine can form an inclined plane with a smallgradient at the bottom end of the greenhouse surface, so that the climbing difficulty of the curtain rolling machine is reduced, and the curtain rolling machine can more easily and stably realize rolling and unrolling of a cotton curtain. Meanwhile, the auxiliary walking frame of the curtain rolling machine is simple in structure, convenient to machine and manufacture, low in use cost and high ingeneralization performance.

The invention relates to the technical field of new energy automobile charging piles, in particular to a hidden new energy automobile charging pile which comprises a mounting plate, a placement box fixedly connected to the left side of the mounting plate, a movable plate slidably connected to the inner side of the placement box, a telescopic mechanism connected between the right end of the movableplate and the placement box, a charging pile is arranged on the left side of the movable plate, a support mechanism is arranged between the charging pile and the movable plate, a box door is arrangedon the left side of the placement box in a hinge mode, and the box door is connected to the movable plate through a transmission mechanism. The telescopic mechanism is arranged, so that the chargingpile can be retracted and released, and the problem of large occupied area of an existing charging pile is solved; the risk that the charging pile is damaged by human factors or environmental factorsis reduced, by arranging the support mechanism, the charging pile can rotate through stretching and retracting of the telescopic rod, and therefore the charging pile can be fixed to a wall and can also be buried underground.

An airborne searchlight for taking off at night is disclosed. The airborne searchlight comprises a first searchlight body, a second searchlight body, a cleaning device and a folding and unfolding mechanism, wherein the first searchlight body comprises a main light lampshade, a first light body is arranged at the right end of the main light lampshade, fixing pieces rotationally connected with a second control rod are arranged on the two sides of the first light body correspondingly, the other end of each fixing piece, where the second control rod is located, is connected with the working end in the cleaning device; a second searchlight is arranged at the lower end of the first light body and connected with a retractable mechanism through a first control rod, the retractable mechanism comprises a third hinge seat rotationally connected with the right end of the first control rod, a retractable head is arranged at the upper end of the third hinge seat, a hydraulic column is arranged at the right end of the retractable head, a base connected with the first lamp body is arranged at the right end of the hydraulic column, and the right end of the base is provided with a fixing ring connected to a bearing column of an undercarriage. When an airplane runs at night, a lighting source can be adjusted according to needs, the lamp can be automatically cleaned, and the lamp body is convenient to use and maintain.