76results about How to "Increase turning force" patented technology

The invention discloses a lifting type office table. The lifting type office table comprises a table board, a left supporting plate, a right supporting plate, a rear supporting plate and a lifting device, wherein the left supporting plate, the right supporting plate and the rear supporting plate are fixedly connected with the lower surface of the table board. The lifting device comprises a horizontal lifting plate corresponding to a first through hole in the middle of the table board, a pair of lifting mechanisms and a rotation mechanism; any lifting mechanism comprises a vertical screw rod, asleeve sleeving the screw rod, a fixed rod, a gear disc and a first rotating shaft; the rotating mechanism comprises a first bevel gear, a second rotating shaft, a third rotating shaft, a second bevel gear, a third bevel gear, a fourth bevel gear and a pedal, and the first rotating shaft on the right side is fixedly sleeved with the first bevel gear. The height of the lifting plate can be quickly, safely and stably adjusted, the manufacturing cost is low, the working efficiency is high, and the office table is suitable for being widely popularized in the market.

The invention discloses a prawn sequencing orientating device. The prawn sequencing orientating device comprises a rack, a sequencing mechanism, a separating mechanism, a rotating mechanism, an orientating mechanism and an image acquisition and control system, wherein the sequencing mechanism is mounted on the rack, and comprises a conveyor belt, a sequencing belt and a sequencing drive mechanism;the conveyor belt and the sequencing belt are separately connected to the sequencing drive mechanism; the sequencing belt is positioned above one side of the conveyor belt, and the sequencing belt and the conveyor belt are arranged in parallel; left and right sequencing blocks are correspondingly arranged on the conveyor belt and the sequencing belt separately; a sequencing channel is formed between the left sequencing block and the right sequencing block; the separating mechanism is mounted on the rack and is positioned at one end of the rack; the tail end of the separating mechanism corresponds to the inlet of the sequencing mechanism; the rotating mechanism is mounted on the rack and is positioned at the other end of the rack; the orientating mechanism is mounted on the rotating mechanism, and corresponds to the outlet of the sequencing mechanism; and the image acquisition and control system corresponds to the orientating mechanism.

The invention belongs to the technical field of irrigation devices and particularly relates to an urban afforestation water-saving irrigation device. The urban afforestation water-saving irrigation device comprises an irrigator and a track, wherein the irrigator comprises water tanks and a spraying device, and rotating wheels in uniform arrangement are rotatably connected to the lower surface of each of the two water tanks through node rods; a liquid transporting pipe is rotatably connected to the upper surface of each of two water pumps; a pressurization tank is fixedly connected to the topsof the two liquid transporting pipes; a first liquid pipe is fixedly connected to the upper surface of a pressurizer; the spraying device is rotatably connected to the top of the first liquid pipe; the spraying device comprises a rotation block; and second liquid pipes in uniform arrangement are fixedly connected to the external surface of the rotation block. The urban afforestation water-saving irrigation device disclosed by the invention is mainly used for solving the problems that according to a traditional urban afforestation water-saving irrigation device used at present, a water pipe isoften directly used for spraying plants, in the process of spraying the plants, a large number of water resources need to be used, so that the situation of wasting the water resources occurs, besides,the irrigation degree of the plants is also not uniform, and the gaps between the growth speeds of the plants are large.

The invention discloses a rigid mill of a screw rod, which is suitable for performing thread machining on a cylindrical workpiece. The rigid mill comprises a machine tool main body, a driving mechanism, a chuck, a thimble, a milling head, a milling head moving mechanism, a milling head driving device and a control system, wherein the driving mechanism is arranged on the machine tool main body, and the output end of the driving mechanism is connected with the chuck; the cylindrical workpiece is horizontally arranged; the chuck is clamped at the left end of the cylindrical workpiece; the thimble is arranged on the machine tool main body and is pressed against the right end of the cylindrical workpiece; the milling head moving mechanism is movably arranged on the machine tool main body; the milling head is connected with the output end of the milling head driving device and is provided with a plurality of milling cutters; the milling cutters are contacted with the surface of the cylindrical workpiece; the milling head driving device is arranged on the milling head moving mechanism; and the control system is electrically connected with the driving mechanism and the milling head driving device. The rigid mill of the screw rod has high turning force and high operating efficiency.

The invention discloses a horizontal shaft type concrete mixer. The horizontal shaft type concrete mixer comprises a device body, a mixing barrel, a mixing rod, a supporting plate and a control electric box, wherein a supporting plate is seamlessly welded to the left side of the top end of the device main body, the right side of the top end of the device body is fixedly connected with a control electric box through a nut, the right side of the supporting plate is fixedly connected with a movable supporting shaft through the nut, and the right side of the movable supporting shaft is fixedly connected with the mixing barrel through the nut. According to the horizontal shaft type concrete mixer, the top end of mixing blades are seamlessly welded with a fixed plate, a large amount of concreteis arranged in the mixing barrel in the mixing process to cause the deformation of the mixing blades, the top end of the mixing blades is seamlessly welded with a fixing plate, so that the mixing blades can be mutually fixed and supported, the mixing blades are not easy to bend, and then the problem that mixing is not uniform an existing horizontal shaft type concrete mixer due to the fact that the mixing blades are easily bent for a long time is solved.

A ratchet tool includes a shaft member, a handle and a ratchet mechanism, in which the handle is connected to the ratchet mechanism, and the shaft member extends into the interior of the ratchet mechanism along the central axle of the ratchet mechanism from the front end of the ratchet mechanism and is connected to the ratchet mechanism. The shaft member includes a shaft and an extension portion which passes through the rear end of the ratchet mechanism along the central axle of the ratchet mechanism from the front end of the ratchet mechanism and is connected to the ratchet mechanism, and the shaft is designed to be integrated with or separated from the extension portion. Such a design of the shaft member solves the wobble problem of the shaft. The ratchet tool of the present invention also includes a lighting device. The ratchet tool of the present invention requires small turning force when turning back and has strong capacity of torque transferring, and at the same time achieves lighting feature.

The invention discloses an unpowered rolling beating sweeping device and method. The device comprises a belt surface, a head transmission roller, a head hopper, an unpowered rolling beating sweeper and a support, wherein the belt surface is tightly attached to the head transmission roller to rotate, the head hopper is arranged outside the head transmission roller and the unpowered rolling beatingsweeper, the unpowered rolling beating sweeper is arranged on the inner surface of the belt surface in the return direction, and the belt surface is arranged between the wall surface of the head hopper and the unpowered rolling beating sweeper; and the unpowered rolling beating sweeper comprises a hammer I, a spring I, a hammer II, a spring II, a rolling bearing, a sweeper center shaft and a rolling bearing block, wherein the hammer I, the spring I, the hammer II and the spring II are arranged on the rolling bearing. According to the device and method, adhesive material on a material conveyingsurface of a belt conveyor can be effectively removed, so that friction between a belt and an equipment support caused by long-term and frequent deviation is reduced, and the normal service life of the belt on the belt conveyor is prolonged.

A hexagon spanner handle of the present invention includes a handle whose three edges are inwardly concaved respectively so as to form three shaft-like bodies at three triangle points. The handle has plural hexagonal apertures in different sizes arranged along the three shaft-like bodies. One plane surface of the handle has three position-limiting slots which are respectively located in three shaft-like bodies and outwardly extended along the shaft-like body and are communicating with the hexagonal apertures. The bottom of each position-limiting slot has plural indentations in different widths, and a magnetic body is located at the end of the position-limiting slot. Thereby, each hexagonal aperture can be inserted by the short leg of corresponding hexagon spanner, and the position-limiting slot can receive the long leg of the hexagon spanner with the magnetic body attracts thereof for fixing, so that the handle can be assembled with hexagon spanners in different standards.

The invention relates to an intelligent assembly system for machining brake assemblies. The intelligent assembly system comprises a circulation type assembly conveying line, wherein a feeding mechanism, a spring mounting mechanism, a grinding mechanism, a turnover mechanism, an iron core dismounting mechanism and a discharging mechanism are sequentially distributed along the conveying direction ofthe assembly conveying line, the assembly conveying line is further provided with at least one manual assembling process, at least one assembly tool is further arranged on the assembly conveying line, and the assembly tool flows among the mechanisms along with conveying of the assembly conveying line. The system has the advantages that circulation of the assembly tool is realized through arrangement of the circulation type assembly conveying line, in addition, the feeding mechanism, the spring mounting mechanism, the grinding mechanism, the turnover mechanism, the iron core dismounting mechanism, the discharging mechanism and the manual assembling process are matched, so that semi-automatic assembling and polishing of brakes is realized, the manual labor is greatly reduced, and the working efficiency is correspondingly improved.

The present invention relates to an improved device of a seeding machine or a fertilization seeding machine in agricultural machines, and discloses a driving control signal collecting device for a seed or fertilizer discharge groove wheel of the seeding machine or the fertilization seeding machine, roller wheels are arranged on the seeding machine or the fertilization seeding machine, the roller wheels are contacted with the ground, the roller wheels rotate along with the forward moving of the seeding machine or the fertilization seeding machine, and electrical signals which are outputted while the roller wheels rotate are transmitted to a driving control device of the groove wheel (12) of the seeding machine or the fertilization seeding machine. A rotating shaft (8) of the roller wheels collects the electrical signals by a rotation speed sensor to transmit to the driving control device of the groove wheel (12) of the seeding machine or the fertilization seeding machine. The rotating shaft (8) of the roller wheels is provided with a grating disc (4), an infrared probe (10) on the side of the grating disc (4) collects the electrical signals to transmit to the driving control device of the groove wheel (12) of the seeding machine or the fertilization seeding machine. The driving control signal collecting device has the advantage of simple structure, the whole driving control signal collecting device combines two technical characteristics, the driving control signal collecting device can sensitively and accurately reflect and collect actual operation conditions of the seeding machine or the fertilization seeding machine, also can conveniently and quickly transfer the actual operation conditions to the driving control device of the groove wheel of the seeding machine or the fertilization seeding machine to obtain accurate signals so as to achieve the purpose of the driving control signal collecting device.

A heat dissipation lighting device comprises an installation heat dissipation base, LED light source modules, an installation supporting assembly and a protective assembly. The LED light source modules are arranged on the installation heat dissipation base. The installation supporting assembly comprises a first installation supporting piece and a second installation supporting piece. The protective assembly comprises a rotary rod, a first motor, a second motor, a control module, an installation locking sleeve body and a protective cover body; the first end and the second end of the rotary rodare rotationally connected with the first installation supporting piece and the second installation supporting piece correspondingly; the first motor is connected with the first end of the rotary rod,and the second motor is connected with the second end of the rotary rod; the control module is electrically connected with the first motor and the second motor and used for controlling working of thefirst motor and working of the second motor; the installation locking sleeve body is arranged outside the rotary rod; and the protective cover body is fixed to the installation locking sleeve body. Thus, the LED light source modules can be better shielded and protected through the protective cover body.

The invention discloses a water environment ecological restoration purifying device based on solar energy and LED light sources. The water environment ecological restoration purifying device structurally comprises a floating bed, floating plates, sealing plates, LED lamps, a solar panel, connecting buckles, supporting plates, planting cavities, a propeller automatic pushing device, a power outputdevice, a power transmission mechanism, a pneumatic pushing mechanism, a propeller pushing mechanism, a power transmission mechanism, a protection housing, a gear pushing mechanism and a belt transmission mechanism. According to the water environment ecological restoration purifying device based on the solar energy and the LED light sources, rotating power of a motor is converted into propelling force, thus the motor can rapidly rotate in water to push the floating bed 1 to move ahead, manual pushing by workers is not needed, labor force is greatly saved, meanwhile the moving speed of the floating bed 1 is increased, the floating bed 1 is conveniently moved to other areas, and water environment ecological restoration purification is effectively improved.

The invention provides an automobile having a semi-automatic error correction brake system with an external rotor type fixed-rotation angle electromagnetic valve, belonging to a semi-automatic safety automobile capable of changing the operation of mistaken stepping on the accelerator into an operation of automatic braking or manual reset. The sensor of the error correction brake system is arranged in a position in the vicinity of an accelerator pedal; a digging rope is connected to the outer surface of the externally sleeved rotor of the externally sleeved rotor type fixed-rotation angle electromagnetic valve of the error correction brake system and the other end of the digging rope is connected to the accelerator pedal and a brake linkage device, so that the automobile having the error correction brake system is realized. The automobile having the semi-automatic error correction brake system with the external rotor type fixed-rotation angle electromagnetic valve has the following advantages that the speed of response from the discovery of the operation of mistaken stepping on the accelerator to correction into a braking action is high, so that car crashes caused by mistaken stepping on the accelerator can be prevented; and the electromagnetic valve driving the brake is accurate in action, and capable of realizing full-automatic error correction braking starting, and also capable of keeping the braking state for a long time without a locked rotor problem and without consuming power; and the automobile is capable of recovering normal running until a driver manually recovers the state of the system before start.

The invention is an improved uncoiler. The uncoiler has sufficient power and is suitable for discharging of plates with various models. The uncoiler comprises a base and both ends of the base are respectively provided with screw rods; the screw rods are respectively connected with brackets at corresponding side and the brackets are respectively connected with a tapered rack by a rotating shaft; the uncoiler is characterized in that the bracket at one side is provided with a motor drive structure of the rotating shaft.

The invention discloses an electric tricycle, comprising chassis wheels, wherein the wheels comprise a front wheel and two rear wheels; the front wheel is provided with a brake unit; the brake unit comprises a main shaft, a chuck and a buffer disk; the main shaft is provided with a diamond block and a connecting rod mechanism; the diamond block is provided with a chuck; the chuck is provided witha chuck slot; a cylindrical spring is arranged between the chuck block and the diamond block; and a scroll spring is arranged between the buffer disk and the chuck. The present invention utilizes therelative rotating between the buffer disk and the chuck, so that upon brake, The wheel can produce a certain brake cushioning distance, thereby avoiding the defect that the disc brake locks the wheelat the instant of braking, thereby reducing the risk of wheel skidding, changing the traditional friction braking mode, and avoiding the wear problem after the transmission friction braking mode is used for a long time.

The invention discloses a bird repelling device for a telegraph pole. The device comprises a fixed base, bird repelling balls and a support rod. The fixed base comprises two clamp half bodies, the ends of the two clamp half bodies are butt-joined, then the clamp half bodies sleeve the telegraph pole, and each clamp half body comprises an inner clamping plate and an outer clamping plate, wherein the outer clamping plate is arranged on the outer side of the inner clamping plate, the upper end of the outer clamping plate is connected with the outer clamping plate through a connecting plate, and the inner clamping plate is provided with a compression bolt connected with the telegraph pole; a rolling wheel is arranged at one end of each support rod and arranged between each inner clamping plate and the corresponding outer clamping plate, the bird repelling balls are in rotating connection with the other ends of the support rods, and each bird repelling ball is internally provided with a chemical ball, wherein the chemical ball is internally provided with a granular bird repelling agent, outer chemical outlet holes are formed in the side wall of the bird repelling ball, and inner chemical outlet holes are formed in the surface of the chemical ball. According to the device, birds can be repelled through multiple methods at the same time, the problems that at present, a bird repelling device is monotonous in bird repelling method, and after long-term use, the effect is reduced are solved, and the bird repelling effect is obvious.

The meadow vegetation root system sampling and surface soil stripping device comprises an outer barrel with the bottom being open and a sampling barrel arranged in the outer barrel, a vertically-downward positioning column and a protective edge extending outwards are installed at the bottom of the outer barrel, a telescopic frame is arranged on the outer wall of the outer barrel, universal wheels are installed on the telescopic frame, and the universal wheels are arranged on the outer wall of the outer barrel. The top of the sampling barrel is coupled with a longitudinally arranged sampling motor, the outer wall of the sampling motor is fixedly connected with a sliding lifting cylinder, and the sliding lifting cylinder penetrates out of the top of the outer barrel and is connected with a console at the top end; the sampling barrel comprises an upper drying and separating area and a lower sampling area. The device is used for pasturing area grassland vegetation root system research work, sample plot plant root systems can be completely obtained, root system surface soil can be rapidly dried and separated according to test requirements, convenience is provided for pasturing area grassland vegetation ecology and ecological restoration plant breeding research, and the device is high in practicability. Important research data are provided for drought resistance and disaster reduction in pasturing areas and sustainable development of agriculture and animal husbandry, the automation degree is high, and the acquisition speed is high.

A washing machine provided with vertical drums comprises a casing, wherein an outer drum and an inner drum are arranged in the casing, a driving motor is mounted at the bottom of the outer drum, and an output shaft of the driving motor is connected with the bottom of the inner drum. The washing machine is characterized in that multiple washing ribs are evenly arranged on the inner wall of the inner drum, and the washing ribs are S-shaped or transversely V-shaped. With the adoption of the washing machine, during washing, the driving motor rotates to drive the inner drum to rotate clockwise firstly, the washing ribs on the wall of the inner drum shift a detergent and washing to rotate clockwise simultaneously, after the washing machine runs for a certain period of time, the driving motor rotates reversely to drive the inner drum to rotate counterclockwise, the force at which the S-shaped washing ribs drive the washing to rotate is larger, the contact area is large, the friction force is large, and the defouling effect is better; when the washing is shifted, upper, lower and middle parts of the washing ribs shift the washing asynchronously, and the pressure difference is formed, so that the washing is promoted to turn over. The washing machine also has the advantages of concise and compact structure, low manufacturing cost and convenience in usage.

A hexagon spanner handle of the present invention includes a handle whose three edges are inwardly concaved respectively so as to form three shaft-like bodies at three triangle points. The handle has plural hexagonal apertures in different sizes arranged along the three shaft-like bodies. One plane surface of the handle has three position-limiting slots which are respectively located in three shaft-like bodies and outwardly extended along the shaft-like body and are communicating with the hexagonal apertures. The bottom of each position-limiting slot has plural indentations in different widths, and a magnetic body is located at the end of the position-limiting slot. Thereby, each hexagonal aperture can be inserted by the short leg of corresponding hexagon spanner, and the position-limiting slot can receive the long leg of the hexagon spanner with the magnetic body attracts thereof for fixing, so that the handle can be assembled with hexagon spanners in different standards.

The invention relates to a low-noise and high-efficiency wind blade, which comprises a blade root, a wingspan, a blade tip, a noise reduction component and a wind guide component. By reasonably setting the distribution and form of the noise-reducing components arranged on both sides of the blade, and cooperating with the reasonable setting of the air-guiding components, the noise of the wind blade is greatly reduced. In addition, by setting the wind guide components reasonably, the utilization efficiency of wind power is improved, and the probability of shutdown events caused by the blades rotating too fast is avoided.

The invention discloses a massage device of an integrated bathing room, comprising a transformer, a control switch, at least one motor, at least one set of transmission gears, a pad, and a working terminal. An input end of the transmission is connected to commercial powder, an output end thereof is connected in series to the control switch and then connected to the motor, an output end of the motor is connected to the transmission gear set, the working terminal is connected to an output gear of the transmission gear set, and both the motor and gear axle in the transmission gear set are fixed on the pad. A massage device is provided in the integrated bathing room and is directly connected with the commercial power. The working voltage of the motor is lower than 36V so that short circuit and electric shock will not happen even the bathing room is filled with a great deal of water vapor, thereby ensuring the safety of the users. Normal working of the working terminal is ensured by using a two-stage transmission which greatly improves rotation force. The invention is provided with multifunction such as automatic back massage, automatic bath gel application, automatic fallen skin cells removing, and automatic cleaning, thereby enhancing the product grade and facilitating users.

The invention relates to a semi-automatic error correction braking system with an inward rotating solenoid valve having fixed rotation angle, in particular to the semi-automatic error correction braking system which can change an accidental step on an accelerator into an error correction braking. The semi-automatic error correction braking system comprises a sensor, a sensor signal analyzer, a control signal amplifier and a power supply controller, which are sequentially connected with one another. The power supply controller is connected with the solenoid valve with an inner fork-shaped rotator and a direct current power supply which drives the solenoid valve with the inner fork-shaped rotator. The semi-automatic error correction braking system with the inward rotating solenoid valve having fixed rotation angle has the advantages that response speed from detecting the accidental step on the accelerator to correcting the accidental step into braking is fast, the solenoid valve which drives a brake is accurate in operation, full-automatic error correction braking can be achieved, no rotator locking occurs, and a braking state can be maintained for a long time without power consumption until a driver manually restores a state before the system starts.

The invention discloses a ligament stretching device for aerobics training, which comprises a base. A traction seat is arranged at one end of the base, a cushion is arranged at the other end of the body, a sliding groove is reversely formed in the base along the length direction, the traction seat is arranged in the sliding groove in a sliding manner, a traction mechanism used for driving the traction seat to be away from the cushion is arranged between the sliding groove and the traction seat, a grip is arranged on the side wall of the traction seat, positioning frames are arranged on the twosides of the base, a positioning rod is arranged on the positioning frame in the length direction, the positioning rod is arranged on the positioning frame in a rotating mode, a plurality of abuttingidler wheels with gradually-increased diameters are arranged on the positioning rod in a sliding mode, the abutting idler wheels are eccentrically arranged on the positioning rod, a locking piece used for limiting sliding of the abutting idler wheels is arranged on the positioning rod, and a driving piece used for driving the positioning rod to rotate is further arranged on the positioning frame.The device can assist in exercising and stretching of side-by-side stretching and knee bending, and the exercising and stretching effect is improved.

The invention discloses a portable double-cabin multilayer tent car top tent with high intensity and a fast building function. The portable double-cabin multilayer tent car top tent comprises at least three reverse U-shaped tent support frames, inner tent cloth, an inlet, a water discharge opening and a tent cabin body, wherein the tent cabin body is formed by an outer cabin body and an inner cabin body, the tent cabin body is divided into a left tent cabin body and a right tent cabin body, the inner cabin body comprises a water separation plate, a support plate and a connecting bottom plate, a hollow layer is formed between the support plate and the connecting bottom plate, in addition, a rowed reinforcing rib mechanism positioned in the hollow layer is arranged on the connecting bottom plate, the at least three reverse U-shaped tent support frames are sequentially ranged and formed into a fan shape, the end points of all of the reverse U-shaped tent support frames are concentrated on a rotating element arranged in the middle part of the tent cabin body, and the inner tent cloth sleeves the U-shaped tent support frame positioned in the middle and is connected with the water separation plate through an elastic fixing device. The portable double-cabin multilayer tent car top tent has the advantages that the design is ingenious, the operation is convenient and fast, the time and the labor are saved, and the problems of heavy weight, low intensity, inconvenient installation and low building and folding speed of the existing car top tent are well solved.

The invention discloses a fertilizer applicator with adjustable fertilizer application amount. The fertilizer applicator comprises a rotating shaft, a disc and an annular piece, wherein the disc is provided with a plurality of arc-shaped holes in an annular array, the disc is arranged in an inner ring of the annular piece, the outer wall of the annular piece penetrates through the inner wall of the annular piece and is provided with a positioning groove, fertilizer containing boxes with openings in the tops are arranged in the positioning groove, the bottoms of the fertilizer containing boxes are connected with the arc-shaped holes through fasteners, one end of the rotating shaft penetrates through the axis of the disc, and the other end of the rotating shaft is connected with a power driving device. According to the fertilizer applicator, accurate fertilization amount can be obtained by simply measuring the distance between the bottom of the fertilizer containing box and the opening of the positioning groove, the fertilization precision is high, the purpose of equal-interval fertilization can be achieved through the arrangement of the plurality of fertilizer containing boxes and the plurality of arc-shaped holes, and the controllability of fertilizer application is higher.

The invention relates to an automobile with a semi-automatic error correction braking system with an inward rotating solenoid valve having fixed rotation angle, in particular to a semi-automatic safe automobile which can change an accidental step on an accelerator into an automatic braking and a manual resetting. A sensor of the error correction braking system is disposed at a position near an accelerator pedal. A pulling cord is connected to the outer surface of a central rotary shaft of the solenoid valve with an inner fork-shaped rotator. The other end of the pulling cord is connected with a braking pedal and a braking linkage device so as to form the automobile with the error correction braking system. The automobile with the semi-automatic error correction braking system with the inward rotating solenoid valve having the fixed rotation angle has the advantages that response speed from detecting the accidental step on the accelerator to correcting the accidental step into braking is fast, the solenoid valve which drives a brake is accurate in operation, full-automatic error correction braking can be achieved with no rotator locking, and a braking state can be maintained for a long time without power consumption until a driver manually restores a state before the system starts so that the automobile can be driven normally again.

The invention relates to a pneumatic turnover device for a cylindrical automobile part. The pneumatic turnover device comprises a turnover bracket, a turnover component and a clamping mechanism, wherein a machining platform used for placing the cylindrical automobile part is arranged inside the turnover bracket; the turnover component is installed inside the turnover bracket; the turnover component comprises a pair of arc-shaped clamping turnover plates which are arranged in a manner of being opened in opposite directions; the two clamping turnover plates are driven to approach to or leave away from the machining platform by a lifting mechanism and are driven to be turned over by a turnover mechanism; and the clamping mechanism is used for driving the two clamping turnover plates to leaveaway from each other or approach to each other. The pneumatic turnover device provided by the invention has the advantages that the cylindrical automobile part is clamped by virtue of one pair of arc-shaped clamping turnover plates; the arc-shaped clamping turnover plates realize contact between faces of the part and increase the contact area; the clamping of the two clamping turnover plates is realized by cooperation of two double-rod driving cylinders, and the turnover of the part is realized by cooperation of the turnover mechanism, so the turnover acting force is increased, and the clamping is guaranteed in a turnover process of the clamping turnover plates.

The invention relates to a concrete pipe mold of a radial extrusion molding process. The mold comprises a cylinder (1), and a hinge mechanism is arranged on the side face of the cylinder (1) in the longitudinal direction and comprises a hinge shaft (2) parallel to the cylinder (1); the hinge shaft is connected with the cylinder (1) through a hinge (3), and a movable shaft (4) connected with the cylinder (1) is arranged on the upper portion of the hinge shaft (2); and a force exertion rod (5) is arranged on the movable shaft. The hinge mechanism is adopted to achieve separation of all portions of the cylinder, and the separation is based on the rotating manner, so that the mold is simple in structure and easy to operate; and (2), a shaft shoulder is arranged, and aims at solving the problems that if the mold is placed on the ground, friction can be generated between the cylinder and the ground, rotation force is increased, and the cylinder is prone to being damaged, and therefore the shoulder is arranged to aim at enabling the mold to be separated from the ground through force exertion of a related device, and the defects are overcome.