87results about How to "The rotation angle is easy to control" patented technology

The invention discloses a real-time monitoring method for growth characters of tea trees in intensive cultivation. The method comprises the following steps: performing real-time data acquisition by a tea tree living body growth character data acquisition device based on online location, transmitting the acquired data to an artificial comprehensive management center through a wireless communication way to process, wherein the acquired data comprises current location data acquired by a locating mechanism, fresh tea leaves spectrum data acquired by a high spectrum imaging sensor, and average growth height of fresh tea leaves measured by an ultrasonic wave sensor, and judging the best fresh tea leaf picking time based on that the data and a picking judgment model established off line are combined by the artificial comprehensive management center. The picking judgment model comprises a bud size growth measurement model based on average growth height, a yield correlation model and a quality correlation model based on the high spectrum image data. The real-time monitoring method for the growth characters of the tea trees in intensive cultivation is beneficial to realizing of intensive cultivation and automation in planting of the tea trees.

The invention discloses a method for calibrating a zero position output value of a sensitive shaft of a tilt angle sensor. The tilt angle sensor is a tilt angle sensor of a capacitive type acceleration transducer. The method comprises the following steps: fixing a tilt angle sensor circuit board and applying a first action force on a movable polar plate of a sensor capacitor in the direction of the sensitive shaft; acquiring a first calibration factor value output by the capacitive type acceleration transducer; in the direction of the sensitive shaft, applying a second action force on the movable polar plate and ensuring that the second action force and the first action force have same strength and opposite directions by taking the capacitive type acceleration transducer as the reference;acquiring a second calibration factor value; and acquiring a zero position output value of the sensitive shaft, wherein the zero position output value is equal to 1 / 2 of the sum of the first calibration factor value and the second calibration factor value. The method can accurately calibrate the zero position output value of the sensitive shaft of the tilt angle sensor, avoid the defect that the zero position output value is manually calibrated and ensure that the tilt angle sensor can more accurately measure the tilt angle.

A method for measuring, calculating and analyzing the height, width, thickness, angles and the measurements of chest, waist and buttocks of a person and offering a suggestion on its clothing is disclosed. Its apparatus is composed of a measuring stand, dark-color background, digital camera, and computer.

The invention discloses a device for data acquisition of fertility characteristics of a tea tree living body based on online positioning. Four vertical supporting rods (2) are arranged on four corners of a rectangle covering the tea tree plantation zone; a colored mark (3) is arranged at the top end of each supporting rod; a guide rail (1) is arranged on each of the two long sides of the rectangle; four pulleys and a motor (20) used for driving the supporting rods are arranged at the bottom of a frame (5); an omnibearing visual sensor (9) is fixed onto a tripod (12) arranged at the top end of the frame; a computer (7), a storage battery (8), an ultrasonic sensor (16) and a wireless transmitter (14) are further arranged on the frame; a hyperspectrum sensor is also arranged at the top of the frame; the device for data acquisition of fertility characteristics of the tea tree living body based on online positioning has the characteristic of high automation degree, so as to provide infrastructure for fine plantation of tee trees.

The invention relates to an underground bicycle garage for a rotating mechanism at an accurately controlled angle. The underground bicycle garage comprises an assembling type supporting unit and a central conveying unit, wherein the assembling type supporting unit is composed of a cage type barrel and a plurality of layers of bicycle storage racks peripherally arranged on the inner wall of the cage type barrel facing an axial center position; the central conveying unit is mounted at the axial center position of the assembling type supporting unit, the central conveying unit is composed of parallel rotating guide rails, a synchronous belt type lifting mechanism, a shaft support type rotating mechanism and a conveying table, a laser distance measuring sensor is fixedly mounted at one side end part of the conveying table, a reflecting plate is mounted at the end part of each bicycle storage rack, and the signal output end of the laser distance measuring sensor is connected to a control system. The underground bicycle garage can complete grabbing, lifting, accurate rotation and pushing of bicycles, the bicycles can be placed on the bicycle storage racks at right positions, the quantity of the stored bicycles is large, the ground space is saved, and the underground bicycle garage is reasonable in structure, good in safety and stable and efficient in operation.

The invention relates to a building decoration supporting robot based on a three-freedom-degree parallel mechanism. The building decoration supporting robot comprises a self-stabilized supporting device with good rigid supporting performance, stabilizing performance and vibration reducing performance. A locking adjusting device is mounted in the middle of the upper end face of the self-stabilized supporting device. The self-stabilized supporting device comprises a fixed circular truncated cone, and four universal wheels are symmetrically arranged on the lower end face of the fixed circular truncated cone. The building decoration supporting robot is moved to the places, needing to be cleaned, of an indoor building through the four universal wheels. Four parallel supporting branched chains are evenly mounted on the upper end face of the fixed circular truncated cone in the axis direction, four L-shaped supporting columns are symmetrically mounted in the middles of the upper end faces of the four parallel supporting branched chains, four round mounting sheets are arranged at the tail ends of the four L-shaped supporting columns correspondingly and mounted on four connecting sheets through screws correspondingly, and the four connecting sheets are symmetrically welded to the lower end face of a square mounting table. According to the building decoration supporting robot, a stable rigid supporting function can be achieved during indoor building cleaning.

The invention relates to an ocean current energy power generation device, which comprises a power generator (201), an ocean current energy acquisition unit and a transmission unit. The ocean current energy power generation device is characterized in that the ocean current energy acquisition unit has a structure utilizing a plurality of current baffle components which open to the ocean current direction in ocean current impact to drive two gears to rotate synchronously, the transmission unit is a hydraulic transmission unit and comprises hydraulic cylinders (210), an oil tank (207), an energy accumulator (203) and a hydraulic motor (202). Affection of ocean current energy fluctuation onto the ocean current energy power generation device is low so that the ocean current energy power is more stable in running. The ocean current energy acquisition unit of the ocean current energy power generation device is simpler in structure and more convenient in maintenance.

The invention relates to a rigid support type environmental protection robot for architecture, which comprises a self-stabilizing support device with good rigid support performance, stability performance and vibration reducing performance, wherein a locking adjusting device is arranged in the middle of the upper end surface of the self-stabilizing support device, and the fixed angle and rotating angle of the locking adjusting device can be adjusted; cleaning manipulators are arranged on the upper end surface of the locking adjusting device. The cleaning angles of the cleaning manipulators can be adjusted, and the application range is large, so the functions of automatically cleaning spider webs and dust on suspended ceilings and ceilings can be realized. The self-stabilizing support device comprises a fixed circular table, and four parallel-connected support branched chains are uniformly arranged on the upper end surface of the fixed circular table along the axis direction; four L-shaped pillars are symmetrically arranged in the middle parts of the upper end surfaces of the four parallel-connected support branched chains, and four installation discs are respectively arranged at the tail ends of the four L-shaped pillars. The rigid support type environmental protection robot provided by the invention has an automatic cleaning function of interior architecture, and provides a new way to automatically clean interior architecture.

The invention relates to an overspeed detection hyperspectral imaging technique, and provides a Fourier transform hyperspectral imaging device based on a high-speed double reflection rotating mirror to solve the problem of nonlinearity caused by an optical path difference of a high-speed rotating mirror transmission type interference spectrometer. The device comprises a collimating mirror, a beamsplitting mirror, a first reflecting mirror, a second reflecting mirror, a first hollow retro-reflector, a second hollow retro-reflector, a detector and the double reflection rotating mirror. Incidentlight is incident on a beam splitter and is divided into reflected light and transmitted light. The reflected light enters the first hollow retro-reflector after being reflected by the first reflecting mirror and the double reflection rotating mirror. Then the reflected light returns back to the double reflection rotating mirror at 180 degrees, and is then reflected to the beam splitter by the double reflection rotating mirror and the first reflecting mirror. The transmitted light enters the second hollow retro-reflector after being reflected by the second reflecting mirror and the double reflection rotating mirror. Then the reflected light returns back to the double reflection rotating mirror at 180 degrees, and is then reflected to the beam splitter by the double reflection rotating mirror and the second reflecting mirror. The interference light generated by the reflected light and the transmitted light is received by the detector.

The invention relates to a conveying platform rotating mechanism for an underground bicycle garage, which comprises a rotating guide rail for installing a conveying platform, a guide rail support frame and a rotating drive unit, wherein the rotating drive unit is structurally characterized in that a support gear ring is fixedly installed on a bottom rotating support disc; a rotating support bearing seat is installed in the support gear ring; a rotating support bearing is installed between the inner wall of the support gear ring and the outer wall of the rotating support bearing seat; an upper rotating support disc is fixedly installed on the rotating support bearing seat; a rotating drive motor is installed on the upper rotating support disc; a rotating driving gear is installed on a motor shaft at the lower part of the rotating drive motor; the rotating driving gear is in meshed transmission with the support gear ring; and the bottom of the rotating guide rail is fixed with the upper rotating support disc of the rotating drive unit through the guide rail support frame. The mechanism provided by the invention can realize the rotating action of the rotating guide rail for installing the conveying platform, has favorable radial and axial support force, is stable in operation, is easy to control a rotation angle, and has good action accuracy.

The invention relates to an underground bicycle garage with a laser spacing function. The underground bicycle garage is composed of a spliced support unit and a central conveying unit. The spliced support unit consists of a cage type cylinder and multi-layer bicycle storage frames arranged at the positions, facing the axis, on the inner wall of the cage type cylinder circumferentially. The central conveying unit is arranged at the axis of the spliced support unit and consists of parallel rotation guide rails, a synchronous belt type lifting mechanism, a shaft supporting type rotation mechanism and a conveying platform. A laser distance measuring sensor is arranged on the lower surfaces of the tops of the rotation guide rails. A reflection plate is arranged at the position, corresponding to the laser distance measuring sensor, of the upper surface of the conveying platform, and the signal output end of the laser distance measuring sensor is connected to a control system. According to the underground bicycle garage, grabbing and precise lifting, rotation and pushing of bicycles can be completed, and the bicycles can be aligned and put in the bicycle storage frames, so that the number of the bicycles stored is large, ground space is saved, the structure is reasonable, safety is good, and operation is stable and efficient.

The invention relates to a self-locking indoor building cleaning robot. The self-locking indoor building cleaning robot comprises a locking adjustment device, wherein the fixed angle and the rotation angle of the locking adjustment device are adjustable, four rigid lifting branch chains are symmetrically installed on the upper end face of the locking adjustment device through screws and have good height lifting adjustment performance, and a fourth hydraulic cylinder is installed in the middle of the upper end face of the locking adjustment device; a cleaning manipulator is installed on the top ends of the four rigid lifting branch chains and the top end of the fourth hydraulic cylinder, the cleaning angle of the cleaning manipulator is adjustable, and the cleaning manipulator is wide in application range and can automatically clear spider webs and dust on suspended ceilings and ceilings; the fourth hydraulic cylinder drives the cleaning manipulator to automatically clean indoor buildings through height adjustment of the four rigid lifting branch chains; the locking adjustment device comprises a lower locking round table. The self-locking indoor building cleaning robot has the function of automatically cleaning the indoor buildings and provides a new way for automatically cleaning the indoor buildings.

The invention discloses an assembly-type ground leveling structure and an installing method, and particularly relates to the field of buildings. The assembly-type ground leveling structure comprises abottom plate, an adjusting screw rod, an assembly part keel positioning fixing nut, fixing square tube keel screws and an assembly supporting plate, the bottom plate is connected with the adjusting screw rod, and the assembly part keel positioning fixing nut is arranged on the adjusting screw rod. The installing method includes the following steps that A, the installing point and elevation of theground leveling structure are calibrated on the ground; B, the leveling structure is installed; C, the height of the assembly supporting plate is adjusted; D, keels are installed; E, the flatness ofan overall keel is adjusted; F, base layer plates are installed on the keels; G, finished product floors are laid on the base layer plates. With the assembly-type ground leveling structure and the installing method, construction speed is high, transportation costs are low, the leveling degree is high, adjusting is convenient, no deformation occurs, installing difficulty is low, and environmental pollution is small.

The invention discloses a mobile phone screen glass surface defect detection device in the technical field of screen detection equipment, and discloses a mobile phone screen glass surface defect detection device which comprises a base, a vertical plate is fixedly mounted on the top surface of the base, a detection seat is arranged on the front surface of the vertical plate, and a mounting plate is arranged above the base. According to the invention, a push rod is driven to move through first oil supply to realize rapid clamping of the side surface of screen glass, and after top surface detection is completed, an oil delivery path is changed through a control valve, so that hydraulic oil is delivered into a moving mechanism through a third pipe, and a toothed plate in the moving mechanism is pushed to drive a gear to rotate by 180 degrees; according to the screen glass detection device, the casing pipe drives the distribution box, the movable pipe and the screen glass to turn over, so that secondary detection of the bottom surface of the screen glass is quickly and conveniently realized, manual operation for adjusting and turning over is avoided, the actual turning-over speed is high, the operation is convenient and fast, the operation time is greatly saved, and the detection efficiency of the screen glass is improved.

The invention relates to a paper flower pot punching device and method. The paper flower pot punching device comprises a lifting flower pot conveying platform and a punch arranged above a flower pot punching station. The punch comprises a rack, a positioning and clamping mechanism and a punching mechanism, wherein the positioning and clamping mechanism and the punching mechanism are fixed to the rack. The positioning and clamping mechanism comprises a telescopic rod which is arranged in an inclined mode and driven by a driving device. The front end of the telescopic rod is provided with a clamping board, and the side opposite to the clamping plate is provided with a punching punch. By means of the paper flower pot punching device, four holes of a paper flower pot can be punched at the same time, in addition, copper corn buckle rivets are embedded into the four holes, production efficiency is high, due to the fact that personnel do not need to get involved in the punching process, the safety performance is greatly improved, the whole process from feeding to punching is automatically conducted by the device, operation is simple, labor intensity is greatly lowered, and the production requirement of the paper flower pot is met.

The invention relates to a fixed-angle adjustable indoor building cleaning robot, which comprises a locking adjusting device, wherein the locking adjusting device is adjustable in fixed angle and rotating angle; cleaning manipulators are arranged at the upper end face of the locking adjusting device; the cleaning manipulators are adjustable in cleaning angle and broad in application scope, and the cleaning manipulators are capable of achieving a function of automatically removing spider webs, dust and the like on suspended roofs and ceilings; the locking adjusting device comprises a lower locking round platform; a rotating motor is arranged in the middle of the lower locking round platform by virtue of a motor base; a locking mounting platform is fixedly connected to an output shaft of the rotating shaft; four L-shaped limiting rods are uniformly arranged on the lower end face of the locking mounting platform in an axial direction; the four L-shaped limiting rods are connected to an annular flange in a mode of sliding fit; and the lower end of the annular flange is welded on the lower locking round platform. The cleaning robot disclosed by the invention can achieve a function of automatically cleaning indoor buildings; and a new way is provided for the automatic cleaning of the indoor buildings.

The invention provides a rotary overhead operation scaffold. The rotary overhead operation scaffold comprises a scaffold body and a hooking device arranged above the scaffold. The hooking device includes a cross bar and hooks fixedly connected at an upper end of the cross bar, wherein the number of the hooks is at least two, and the cross bar is rotationally connected with the scaffold body. The rotary overhead operation scaffold has the advantages of scientific design, simple structure, convenient operation and high safety, and rotation angles of the scaffold are controllable.

The invention relates to a rotary type fracture sand jet and a multistage sand jetting and fracturing process. The rotary type fracture sand jet is structurally characterized in that an upper connector and a lower connector are connected with the two ends of the fracture sand jet; a rotary type slide sleeve inner core is arranged on the inner circumference of the fracture sand jet; a plurality of shear pin grooves are formed in the middle of the surface of the outer circumference of the rotary type slide sleeve inner core; a plurality of spring type extensible shear pin assemblies are arranged on a fracture sand jet body, and one spring type extensible shear pin assembly falls into the corresponding shear pin groove; a rotary control mechanism is arranged at the end, close to the upper connector, of the rotary type slide sleeve inner core; rotary sand jetting holes distributed evenly and circumferentially are formed in the end, close to the lower connector, of the rotary type slide sleeve inner core; outer sand jetting holes distributed evenly and circumferentially are formed in the fracture sand jet body; and the outer sand jetting holes correspond to the rotary sand jetting holes in position. A rotary opening type is adopted for the fracture sand jet. In the construction process, the opening process is stable and reliable, and construction can be conducted independently for a layer section; and after construction, a slide sleeve of the constructed layer section can be closed, and layered sand jetting management can be effectively conducted for the stratum.

The invention provides a spiral supporting device, a projector and an adjusting method of the spiral supporting device. The spiral supporting device comprises a fixed support, a spiral support and a first damping pad and is characterized in that the fixed support is equipped with a first support arm which is provided with a shaft hole; the spiral support is provided with a second support arm which is equipped with a rotating shaft; the rotating shaft is stuck in the shaft hole; the first support aim is also provided with a fixed hole; the second support arm is equipped with an arc hole which is corresponding to the fixed hole; a fastener passes through the arc hole and the fixed hole to connect the first support arm and the second support arm; and the first damping pad is positioned between the first support arm and the second support arm. The hinge effect can be reached through the rotating shaft of the spiral support and the shaft hole on the fixed support with the combination of the first damping pad, thus effectively simplifying the structure of the spiral support device and reducing the manufacturing cost of the spiral support device.

The invention discloses a robot and a large-torque rotatable joint power device thereof. The large-torque rotatable joint power device is mounted on a rotating joint of a pedestal or a waist arm or alarge arm or a small arm or a wrist part of the robot. The large-torque rotatable joint power device comprises a piston capable of doing reciprocating motion and a guide part connected with the piston; a main power system and a resetting power system are respectively arranged at the piston end and the guide part end; the guide part is connected with a piston rod; and the axial reciprocating motionof the guide part is converted into the radial rotation of the piston rod. The large-torque rotatable joint power device is used for converting the returning thrust into rotation torque force; when the large-torque rotatable joint power device is applied to the robot joint part and is used for replacing the servo motor, so that the energy is saved, and the pollution is low.

The invention belongs to the field of machining conveying equipment and particularly relates to a synchronous jack-up and rotating device. The synchronous jack-up and rotating device comprises a jack-up component and a rotating component, wherein the jack-up component comprises a jack-up driving mechanism, a support plate and a lifting plate; the jack-up driving mechanism is connected with the support plate; the support plate is driven by the jack-up driving mechanism to ascend and descend; guide rods are arranged between the support plate and the lifting plate; the rotating component comprises a rotating driving mechanism and a rotating piece; the rotating piece is driven by the rotating driving mechanism to rotate; and the rotating piece is arranged on the lifting plate. Various independent rotating motions are integrated in a motion component, and the device is simple in structure, low in cost, convenient to use, good in synchronism and high in rotating accuracy, can be assembled and produced in large quantity, has higher practicability in some rotating structures requiring the synchronism and has wide application prospects.

The invention belongs to the technical field of machine tools free of a Y-axis control system, and particularly relates to a device and method for eliminating eccentricity of a tool and a main shaft of a machine tool. The device comprises an eccentric device and a nut. The eccentric device comprises a first cylindrical section and a second cylindrical section. The first cylindrical section is provided with a first inner hole in the axial direction. An eccentric distance exists between the first inner hole and the first cylindrical section. The eccentric distance is not smaller than the maximumvalue of the distance that the tool of the machine tool deviates from the center of the main shaft. The second cylindrical section is provided with a second inner hole in the axial direction. The second inner hole and the first inner hole are coaxial and communicate with each other. The second inner hole is a conical hole. The small end of the second inner hole communicates with the first inner hole, and the diameter of the small end of the second inner hole and the diameter of the first inner hole are the same. The outer surface of the second cylindrical section is provided with an externalthread, and the second cylindrical section is in threaded connection with the nut through the external thread. A through hole is formed in the center of the nut. By means of the device and method foreliminating the eccentricity of the tool and the main shaft of the machine tool, the eccentric problem of the tool and the center of the main shaft can be solved, and the machining quality of a workpiece is improved.

The invention relates to an air shower spray nozzle terminal of an air purifying device, in particular to a spray nozzle capable of automatically rotating by 360 degrees. A first bearing (1) is arranged in the middle of the upper portion of a fixing frame (2). An upper rotating body (4) is fixed to the lower portion of the fixing frame (2) through a second bearing (3). A plurality of blades (7) are evenly arranged on the lower portion of the upper rotating body (4). A spring (8) is arranged on the lower portion of an adjusting wheel (6). A blade fixing cover (9) is arranged on the lower portion of the spring (8). A lower rotating body (11) is arranged on the lower portion of the upper rotating body (4). An air opening (10) is formed between the upper rotating body (4) and the lower rotating body (11). A decorative cover (12) is fixed to the lower portion of the fixing frame (2) through screws. The spray nozzle can rotate by 360 degrees automatically; by the adoption of the spray nozzle, dust cannot be generated during rotation, the rotation angle and the rotation speed are adjustable, large-area multiple-direction spraying is achieved, and cost is controllable; the spray nozzle is small in height and shape, light in weight, small in size, high in universality and easy to install.

The invention discloses an orientation- and pitching-adjustable laser amplitude instrument installation pedestal, including a bearing pedestal, a support rod, a lifting adjusting rod and a fixed device. The bearing pedestal is arranged on the ground, one end of the support rod is movably connected with the bearing pedestal, the support rod is vertical to the bearing pedestal, side faces of the support rod are provided with symmetrical sliding grooves along an axis direction, two sides of the sliding grooves are provided with connecting pieces respectively, matched screws are arranged in the connecting pieces, the connecting pieces are connected through bolts, the bottom of the lifting adjusting rod is connected with the support rod through the sliding grooves of the support rod, the top ofthe lifting adjusting rod is connected with the fixed device, one end of the support rod is provided with an angle dial, a pointer is arranged on the angle dial, the tip of the pointer corresponds tothe scale on the angle dial, and the tail of the pointer is connected with the support rod. 360-degree adjustment of the laser amplitude instrument in a horizontal direction is realized through mechanization, and the angle of adjustment of the laser amplitude instrument is clearly and directly obtained according to the scale on the angle dial.

The invention discloses an air parking lot. The air parking lot comprises a parking lot body. Elevators are arranged on the two sides of the parking lot body, an inlet is formed in the front side of the parking lot body and an outlet is formed in the rear side, first cameras are arranged at the tops of the inlet and the outlet correspondingly, and a first display screen is arranged on one side ofthe inlet; a first floor operating area and a parking layer are arranged in the parking lot body, a glass cover is arranged at the top of the parking layer, and a machine body is arranged in the firstfloor operating area; and the machine body comprises a rotary disc, a rotary shaft is arranged on the rotary disc in a sleeving mode, and support frames are arranged on the two sides of the rotary disc. According to the air parking lot, rapid parking of vehicles can be achieved, the multiple vehicles can be borne at a time, vehicle parking or vehicle taking can be always achieved in the operatingprocess of the machine body, parking space arrangement is intelligent and parking spaces can be reserved in advance, it can be avoided that the vehicles which do not reserve the parking spaces occupythe reserved parking spaces and inconveniences are not brought to reservation vehicle owners, more conveniences are brought to the many vehicle owners, in addition, vehicle parking and vehicle takingcan be conducted simultaneously, and disorder cannot be caused when vehicle entering and coming and vehicle parking and taking are conducted.

The invention discloses a computer network teaching device. The device comprises a baseboard, a U-shaped board is fixedly connected to the upper surface of the baseboard, a rotating device is clampedto the upper surface of the U-shaped board, a display screen is fixedly connected to the top of the rotating device, a first bevel gear is clamped to the outer surface of the rotating device, a secondbearing is clamped to the side face of the U-shaped board, and a second rotary shaft sleeves the inner surface of the second bearing. According to the computer network teaching device, springs downwards jack the rear sides of the upper surfaces of movement rods through pulleys, so that clamping blocks are re-clamped into clamping grooves, a turntable does not rotate anymore, and thus the displayscreen does not rotate any more; the angle of the display screen is adjusted without driving of a motor, thus electric energy is saved, the rotating angle of the display screen is manually adjusted, thus rotation of the display screen is easier to control, the situation that the rotating angle of the display screen is too large or too small is avoided, a teacher does not need to make secondary adjustment, the time of the teacher is saved, and convenience is brought to the teacher.

The invention relates to an indoor building parallel supporting robot with an angle adjustment function. The indoor building parallel supporting robot with the angle adjustment function comprises a self-stabilizing supporting device. The self-stabilizing supporting device has good rigid supporting performance, stability and damping performance. A locking adjustment device is installed on the middle portion of the upper end face of the self-stabilizing supporting device. The fixing angle and rotating angle of the locking adjustment device can be adjusted. Four rigid lifting branched chains are symmetrically installed on the upper end face of the locking adjustment device through screws. The rigid lifting branched chains have good height lifting adjustment performance. A fourth hydraulic cylinder is installed on the middle portion of the upper end face of the locking adjustment device. A circular truncated cone is installed at the top ends of the four rigid lifting branched chains and the top end of the fourth hydraulic cylinder. The self-stabilizing supporting device comprises a fixed circular truncated cone. Four parallel supporting branched chains are evenly installed on the upper end face of the fixed circular truncated cone in the axis direction. Four L-shaped supporting columns are symmetrically installed on the middle portions of the upper end faces of the four parallel supporting branched chains. By the adoption of the indoor building parallel supporting robot with the angle adjustment function, a stable rigid supporting function can be achieved during cleaning of an indoor building.

The invention belongs to a rotating contact electric arc experimental device, and particularly relates to an experimental device for testing the impact of rotation of a contact on an electric arc in the switch-on-off operation. The reliable and effective small-scale easy-to-operate experimental device for testing the impact of rotation of the contact on the electric arc is provided for electric arc theory research. The experimental device comprises an operating mechanism and an arc extinguishing chamber assembly. The experimental device is characterized in that the operating mechanism drives the movable contact in the arc extinguishing chamber assembly to perform linear motion and rotation.

The invention discloses a clothes hanger. The clothes hanger comprises a rotating shaft; one end of the rotating shaft is fixedly connected with a rotating device; the end, away from the rotating device, of the rotating shaft penetrates through and is rotationally connected with a fixed disc through a bearing; supports are fixedly connected to the bottoms of the rotating device and the fixed disc;supporting rods are fixedly connected to the side faces of the two ends of the rotating shaft; rotating bolts are rotatably connected to one sides of the corresponding supporting rods through bearings; airing devices are fixedly connected to the ends, away from the supporting rods, of the rotating bolts; each airing device comprises an airing frame; a hanging hole is formed in one side of each airing frame; a sliding hole is formed in the portion, located above the hanging hole, of one side of each airing frame; and a sliding way is formed in the top of the inner wall of each hanging hole. The invention relates to the technical field of clothes hangers. The clothes hanger is relatively high in airing efficiency, good in operability and good in use experience, capable of avoiding clothes accumulation and insufficient airing of back-row clothes, relatively good in airing effect and safe and reliable to use.