30results about How to "Realize multi-directional rotation" patented technology

The invention discloses a laser machining clamp which comprises a base, a rotating unit and a clamping unit. The base is provided with a rotating platform capable of rotating in the axis direction of the base. A clamp body which can swing and rotate is arranged on the rotating platform. The rotating axis of the clamp body is perpendicular to the axis of the rotating platform. A rotating unit is composed of the rotating platform and the clamp body. A perpendicularly and inwards concave clamping groove is formed in the surface of the clamp body. A movable clamping piece which can slide in a reciprocating manner is arranged in the clamping groove in a matched manner. A clamping unit is composed of the movable clamping piece and one side of the clamping groove. A rotatable auxiliary clamp part is arranged on the top of the movable clamping piece. A clamp platform is arranged on one side of the clamping unit composed of the clamping groove, and a clamp part is arranged on the clamp platform. A clamp unit is composed of the top face of one side of the clamping unit composed of the auxiliary clamp part, the clamp part and the clamping groove. By means of the laser machining clamp, various machining requirements of thick plates in horizontal, perpendicular and oblique directions can be met.

The invention provides a track device and a movable combined wall for houses with variable spaces. The track device comprises a base plate, a pulley groove and two pulleys. The base plate is suspended on a roof, the pulley groove is formed in the base plate and is used for dividing the base plate, and the two pulleys are arranged on the top of the movable combined wall. The track device and the movable combined wall have the advantages that the movable combined wall can freely move along the pulley groove by the aid of the pulleys, the four-cell track device is matched with the pulleys, and accordingly the wall and the track device can rotate in multiple directions when the double pulleys or the single pulley is suspended and moves, are flexible and variable and are suitable for various places such as the houses and offices.

The invention provides a wheel-leg composite mobile robot which comprises mechanical legs, an upper trunk, a lower trunk and a waist rotating motor, and the upper trunk and the lower trunk are connected through the waist rotating motor. The multiple mechanical legs are connected in series through multiple connecting rods and connected with the upper trunk and the lower trunk respectively. The waist rotating motor can achieve multi-directional steering of the robot in a wheel type moving mode and a leg type moving mode. In the six wheel legs of the robot, three legs are connected with the uppertrunk, the other three legs are connected with the lower trunk, the three legs connected with the same trunk are arranged in an equilateral triangle shape, and the equilateral triangle formed by thewheel legs connected to the two trunks is congruent. The six-wheel-leg composite mobile robot with the waist steering mechanism is few in drive, simple in structure and good in maneuvering performance, and can meet the requirements for movement and detection under complex terrain conditions.

The invention discloses a network monitoring device. The network monitoring device comprises a fixed box, mounting plates, a power box, a lead screw, a limiting rod, a groove, a lifting motor, a control box, electromagnets, a sucking disc, a mounting box, a rotary motor, a transmission rod, a worm, a worm gear, a control panel, a first electric telescopic pole, a fixed rod, a second electric telescopic pole, a supporting rod and a camera, wherein the bottom ends of the corresponding two sides of the fixed box are fixedly connected with the mounting plates; the bottom of the fixed box is symmetrically embedded and equipped with the electromagnets; the power box is arranged inside the fixed box; the lead screw is arranged inside the power box; and the top of the lead screw is rotatably connected to the top of the inner wall of the power box. According to the network monitoring device disclosed by the invention, the rotary motor, the worm gear and the worm are matched for use, so that angle adjustment of the camera is realized, all-around rotation of the camera can be realized, adjustability is strong, and large-range monitoring is convenient. The monitoring device is conveniently dismounted, so that the problem that the monitoring device is accumulated with dust and is difficult to clear while not used for a long time is avoided.

The invention discloses a locking mechanism between a ground brush body and a handle component and cleaning equipment. The locking mechanism comprises a support seat, a connection head and a rotary head, wherein the support seat is arranged on the ground brush body; the connection head is rotatably arranged on the support seat along a transverse shaft; the rotary head is rotatably arranged on the connection head along a longitudinal shaft; the rotary head is fixed at the lower end of the handle component; a rotating member is rotatably arranged along the transverse shaft; a front-back rotation locking component is arranged between the connection head and the support seat; and a left-right rotation locking component is arranged between the rotating member and the rotary head. The locking mechanism has a simple structure and realizes reliable locking; when not in use, both the front-back rotation locking component and the left-right rotation locking component can be locked simply by applying little force to push the handle component forward; when in use, overall unlocking can be realized simply by wrenching the handle component backward; multidirectional rotation of the handle component is realized by adopting the cleaning equipment of the locking mechanism to facilitate the operation of a user; and the locking mechanism is suitable for the cleaning equipment such as a household dust collector, a steam cleaner and the like.

The invention discloses a multidirectional rotation structure node for a reinforced concrete column. The structure node consists of a core reinforced concrete column and an external reinforced concrete column, wherein the core reinforced concrete column and the external reinforced concrete column consist of concrete and a reinforcement framework which are sleeved with each other from inside to outside respectively. A construction method comprises the following steps of: preparing the core reinforced concrete column; embedding the core reinforced concrete column at a preset position, and welding a core column reinforcement framework at the periphery of a prefabricated pipe after the core reinforced concrete column is arranged in position; binding an external column reinforcement framework at the preset position; casting outer column concrete on site; mounting matched constraint materials and filling materials; and binding an upper member of the reinforced concrete column, and erecting a mold to cast the concrete so as to form the integral multidirectional rotation structure node of the reinforced concrete column. The multidirectional rotation structure node has the characteristics of saving manufacturing cost, along with definite design concepts and the like, is easy to construct, is safe and reliable, is durable in use, brings great benefits to the development of economy and society in China, and has a wide application prospect.

The invention belongs to the field of mobile phone auxiliary equipment, and particularly relates to a vehicle-mounted mobile phone holder with an automatic locking function. The holder comprises a supporting assembly, and a clamping assembly. The supporting assembly is arranged below the clamping assembly to support the clamping assembly; the supporting assembly can achieve multi-angle multi-direction rotation of the clamping assembly in three-dimensional space through a spherical universal head, a horizontal rotation head and a rotating shaft; and the clamping assembly can clamp and lock a mobile phone from the upper, lower, left and right directions of the mobile phone at the same time through a longitudinal clamping mechanism and a transverse clamping mechanism.

The flat panel display comprises a display panel, a pivot and a supporting structure used for supporting the display panel. The display panel comprises a display surface, a reverse side corresponding to the display panel and a lateral side adjacent to the display surface; the supporting structure is attached to the lateral side of the display panel through the pivot, and the display panel can make rotation around the supporting structure by using the pivot as the center.

The invention belongs to the field of mobile phone auxiliary equipment, and particularly relates to a four-corner locking vehicle-mounted mobile phone holder, which comprises a supporting mechanism and a clamping mechanism, and is characterized in that the supporting mechanism is arranged below the clamping mechanism and supports the clamping mechanism; the supporting mechanism passes through a first spherical universal head, a second spherical universal head and a first horizontal rotating head; multi-angle and multi-direction rotation of the clamping mechanism in a three-dimensional space can be realized; when the clamping mechanism clamps a mobile phone, the clamping mechanism only needs to abut against one clamping head to be pushed outwards, then linkage is achieved through the firstconnecting rod mechanism and the second connecting rod mechanism by means of a lead screw, the four clamping heads can move in the four directions of the outer side at the same time, and therefore theclamping mechanism can adapt to placement of mobile phones of different sizes. And the four clamping heads contract inwards through the transverse springs and the longitudinal springs, so that the mobile phone is clamped and locked.

The invention provides a polishing device for eliminating the impression effect of an aspheric reflector and relates to the technical field of lens processing. The polishing device for eliminating theimpression effect of the aspheric reflector comprises a motor. The motor is movably connected with a motor shaft through a coupling. A rotating shaft is fixedly arranged at the top end of the motor shaft. A base plate is fixedly arranged on the motor shaft. A water collecting tank is fixedly arranged outside the base plate. A water outlet pipe is movably connected to the bottom of the water collecting tank. A wastewater tank is fixedly arranged at the bottom of the water outlet pipe. A filter layer is fixedly arranged on a water inlet pipe. One end of the water inlet pipe is movably connectedwith a spray head. A fixing seat is arranged above positioning rubber. The polishing device for eliminating the impression effect of the aspheric mirror eliminates the impression effect of the aspheric mirror in the polishing process by avoiding rigid contact between a grinding head and a lens, increasing the contact area at the bottom of the lens and reducing the temperature in the polishing process of the lens.

A liquid crystal display device consists of a display face plate; a connection mechanism including a pin-joint unit being connected separately to said face plate and link unit, and a link unit; as well as a support structure being connected to said link unit for making personnel at different positions view content displayed on face plate clearly.

The invention provides a suspension arm rotary table on a carrier vehicle and belongs to the technical field of coal mining equipment transportation. The suspension arm rotary table on the carrier vehicle aims to provide a rotary table for connecting a suspension arm with a vehicle body, wherein the rotary table can drive the suspension arm to rotate to a certain position under the condition that the vehicle body does not move, the operation difficulty is reduced, and the work safety is guaranteed. According to the technical scheme, a rotary plate support is fixedly mounted on a base through a bolt, an upper rotary plate is in an upturned disk-like shape and movably buckled on the rotary plate, matched grooves are formed in horizontal contact surfaces of the upper rotary plate and the rotary plate support, multiple first steel balls are arranged in the grooves, a middle movable rack is fixedly mounted in the middle of the bottom surface of the upper rotary plate and located in the rotary plate support, a gear ring is fixedly mounted on a circumferential side surface of the upper rotary plate, a hydraulic motor is fixedly mounted on one side of the rotary plate support through a motor support, and a gear meshed with the gear ring is fixedly mounted on an output shaft of the hydraulic motor. With the adoption of the suspension arm rotary table, work parts are more flexible relative to the vehicle body.

The invention relates to a soil stirring device for contaminated soil treatment, and belongs to the technical field of soil treatment. The device comprises a supporting frame; the supporting frame isformed by connecting a left side vertical plate, a right side vertical plate, a horizontal placing plate and a top connecting plate; a left-right stirring structure is arranged on the horizontal placing plate; and a movable electric cylinder is arranged on the lower surface of the top connecting plate; a left electric cylinder sliding plate and a right electric cylinder sliding plate are arrangedon the movable electric cylinder; an up-down stirring structure is arranged on the left electric cylinder sliding plate; a supporting structure is arranged on the right electric cylinder sliding plate; and a stirring tank is arranged between the up-down stirring structure and the supporting structure. The up-down and left-right rotary stirring of the stirring tank is realized through the left-right stirring structure and the up-down stirring structure, so that multidirectional rotation of the stirring tank is realized, and therefore, the stirring uniformity is improved. The soil stirring device is novel in structure, convenient to operate and relatively good in stirring effect.

The invention discloses a polishing device, which comprises a shell, wherein an upper part of the shell is provided with a cover plate; a lower part of the shell is provided with a polishing base plate; fan blades, a rotating shaft and an eccentric disc for driving the polishing base plate to move are arranged in the shell; an adapter rotating mechanism is arranged on the cover plate; the adapter rotating mechanism comprises an adapter and a mounting base arranged on the cover plate; the bottom of the adapter is in pin joint with a joint transversely; a plurality of pairs of jacks are formed on a peripheral wall of the joint; two sides of the mounting seat are provided with a pair of elastic pins opposite to each other; the mounting seat is inserted into a certain pair of jacks of the joint through the elastic pins so as to realize locking and positioning between the mounting seat and the joint, and the two elastic pins are pulled outwards, so that the elastic pins exit from the jacks, and unlocking is realized. The elastic pins are inserted into or exit from the jacks of the joint, so that locking and unlocking between the mounting seat and the joint are realized, and the device is conveniently and rapidly operated and is time-saving and labor-saving.

The invention discloses an internet-of-things robot having a good dispersing effect. The internet-of-things robot comprises a machine body, a rotating shaft extending into a dispersing cavity is arranged at an output end of a motor, a dispersing column comprises a material guide disc, a first dispersing disc, a second dispersing disc, a third dispersing disc and a fourth dispersing disc, the material guide disc, the first dispersing disc and the third dispersing disc are fixedly connected with the rotating shaft, the second dispersing disc and the fourth dispersing disc are rotatably connectedwith the rotating shaft, both the second dispersing disc and the fourth dispersing disc are internally provided with drive cavities, drive gears are arranged on the rotating shaft and on the positions of the inner parts of the drive cavities, annular slide grooves are symmetrically formed in the inner part of each drive cavity up and down, a slide seat is arranged in the inner part of each annular slide groove, a drive shaft is arranged on each slide seat, the drive shafts are provided with driven gears meshed with the drive gears, and inner gears meshed with the driven gears are arranged onthe inner walls of the drive cavities. The device is simple in structure, is convenient to use, has a good dispersing effect, is high in efficiency, improves the feeding uniformity and reduces the labor intensity of a worker.

The invention discloses a rotary wireless communication module base. The first rotating plate of the base can rotate in the plane where the first rotating plate is centered on its center; the lower end of the first connecting rod is fixed at the center of the first rotating plate, and the upper end is connected to One end of the second connecting rod is rotationally connected; one side of the second fixed plate is fixedly connected to the other end of the second connecting rod, and the other side is connected to one side of the second rotating plate, and the wireless communication module is fixed on the other end of the second rotating plate On the side, the second rotating plate can rotate in the plane where the second rotating plate is located with its center of circle as the center. The wireless communication module can be fixed on the wall or on the top through the base of the present invention, and after being fixed, the multi-directional rotation of the wireless communication module can be realized, so as to adjust the antenna position to ensure the required receiving strength, and there will be no problems caused by the position in the later stage. The signal strength changes caused by the changes are very convenient to install and debug.

The invention discloses a multidirectional rotation structure node for a reinforced concrete column. The structure node consists of a core reinforced concrete column and an external reinforced concrete column, wherein the core reinforced concrete column and the external reinforced concrete column consist of concrete and a reinforcement framework which are sleeved with each other from inside to outside respectively. A construction method comprises the following steps of: preparing the core reinforced concrete column; embedding the core reinforced concrete column at a preset position, and welding a core column reinforcement framework at the periphery of a prefabricated pipe after the core reinforced concrete column is arranged in position; binding an external column reinforcement framework at the preset position; casting outer column concrete on site; mounting matched constraint materials and filling materials; and binding an upper member of the reinforced concrete column, and erecting a mold to cast the concrete so as to form the integral multidirectional rotation structure node of the reinforced concrete column. The multidirectional rotation structure node has the characteristics of saving manufacturing cost, along with definite design concepts and the like, is easy to construct, is safe and reliable, is durable in use, brings great benefits to the development of economy and society in China, and has a wide application prospect.

The invention discloses a laser machining clamp which comprises a base, a rotating unit and a clamping unit. The base is provided with a rotating platform capable of rotating in the axis direction of the base. A clamp body which can swing and rotate is arranged on the rotating platform. The rotating axis of the clamp body is perpendicular to the axis of the rotating platform. A rotating unit is composed of the rotating platform and the clamp body. A perpendicularly and inwards concave clamping groove is formed in the surface of the clamp body. A movable clamping piece which can slide in a reciprocating manner is arranged in the clamping groove in a matched manner. A clamping unit is composed of the movable clamping piece and one side of the clamping groove. A rotatable auxiliary clamp part is arranged on the top of the movable clamping piece. A clamp platform is arranged on one side of the clamping unit composed of the clamping groove, and a clamp part is arranged on the clamp platform. A clamp unit is composed of the top face of one side of the clamping unit composed of the auxiliary clamp part, the clamp part and the clamping groove. By means of the laser machining clamp, various machining requirements of thick plates in horizontal, perpendicular and oblique directions can be met.

The invention provides a lifting device for automobile engine mechanical experiments, comprising: a base, a lifting slide rail and a T-shaped block; the right side of the base is slidably connected with a group of the lifting blocks; the connection between the lifting block and the base The center is connected through the scissor mechanism; the left end face of the lifting block is axially connected with a group of the cantilever; the top of the cantilever is axially connected with a group of the rotating seat; the top of the rotating seat is tightened by threads A set of connecting blocks is fixedly connected; a set of fixing bolts is slidably connected inside the connecting block. By using the worm gear and worm transmission mechanism to drive the longitudinal rotation and horizontal rotation of the experimental parts, at the same time, the self-locking characteristics of the worm gear and worm transmission mechanism are used to prevent the automatic rotation of the parts, realize the multi-directional rotation of the experimental parts, and facilitate the all-round observation of the experimental parts And operation, easy to operate.

The invention discloses a locking mechanism between a ground brush body and a handle component and cleaning equipment. The locking mechanism comprises a support seat, a connection head and a rotary head, wherein the support seat is arranged on the ground brush body; the connection head is rotatably arranged on the support seat along a transverse shaft; the rotary head is rotatably arranged on the connection head along a longitudinal shaft; the rotary head is fixed at the lower end of the handle component; a rotating member is rotatably arranged along the transverse shaft; a front-back rotation locking component is arranged between the connection head and the support seat; and a left-right rotation locking component is arranged between the rotating member and the rotary head. The locking mechanism has a simple structure and realizes reliable locking; when not in use, both the front-back rotation locking component and the left-right rotation locking component can be locked simply by applying little force to push the handle component forward; when in use, overall unlocking can be realized simply by wrenching the handle component backward; multidirectional rotation of the handle component is realized by adopting the cleaning equipment of the locking mechanism to facilitate the operation of a user; and the locking mechanism is suitable for the cleaning equipment such as a household dust collector, a steam cleaner and the like.

The invention provides a track device and a movable combined wall for houses with variable spaces. The track device comprises a base plate, a pulley groove and two pulleys. The base plate is suspended on a roof, the pulley groove is formed in the base plate and is used for dividing the base plate, and the two pulleys are arranged on the top of the movable combined wall. The track device and the movable combined wall have the advantages that the movable combined wall can freely move along the pulley groove by the aid of the pulleys, the four-cell track device is matched with the pulleys, and accordingly the wall and the track device can rotate in multiple directions when the double pulleys or the single pulley is suspended and moves, are flexible and variable and are suitable for various places such as the houses and offices.

The invention belongs to the field of mobile phone auxiliary equipment, and specifically relates to a four-corner locking vehicle-mounted mobile phone holder, which includes: a support mechanism and a clamping mechanism. The support mechanism is arranged below the clamping mechanism to form a support for the clamping mechanism; the support mechanism Through the first spherical universal head, the second spherical universal head and the horizontal rotating head one, the clamping mechanism can be rotated at multiple angles and in multiple directions in three-dimensional space. When the clamping mechanism clamps the mobile phone, it only needs to hold One chuck is pushed outward, and then through the linkage of the first linkage mechanism and the second linkage mechanism using the screw rod, the four chucks can be moved to the outside at the same time in four directions, thereby adapting to the placement of mobile phones of different sizes. and through the horizontal spring and the longitudinal spring, the four clips are retracted inward to realize the clamping and locking of the mobile phone.

The invention discloses a microbial agent spraying device for garden planting, and relates to the technical field of microbial agent spraying. The microbial agent spraying device for garden planting comprises a box body, a supporting plate is fixedly connected to the bottom of the box body, a base is fixedly connected to the bottom of the supporting plate, a fixing support is fixedly connected tothe top of the box body, a motor is fixedly connected into the fixing support, and the output end of the motor penetrates through the inner wall of the top of the box body and is fixedly connected with a rotating shaft; and the bottom of the rotating shaft is fixedly connected with a bearing, the bottom of the bearing is fixedly connected with the inner wall of the bottom of the box body, and bolts are arranged on the outer wall of the rotating shaft. According to the microbial agent spraying device, by means of an added multi-direction adjusting mechanism, multi-direction rotation of a sprayhead is achieved; and by means of an added spherical pipe, the spherical pipe is manually rotated before microbial agents are sprayed, the spherical pipe and a second pipeline connector are made to rotate, the direction of the spray head is changed, and waste of the microbial agents is effectively avoided.

A liquid crystal display device consists of a display face plate; a connection mechanism including a pin-joint unit being connected separately to said face plate and link unit, and a link unit; as well as a support structure being connected to said link unit for making personnel at different positions view content displayed on face plate clearly.

The invention discloses a network monitoring device. The network monitoring device comprises a fixed box, mounting plates, a power box, a lead screw, a limiting rod, a groove, a lifting motor, a control box, electromagnets, a sucking disc, a mounting box, a rotary motor, a transmission rod, a worm, a worm gear, a control panel, a first electric telescopic pole, a fixed rod, a second electric telescopic pole, a supporting rod and a camera, wherein the bottom ends of the corresponding two sides of the fixed box are fixedly connected with the mounting plates; the bottom of the fixed box is symmetrically embedded and equipped with the electromagnets; the power box is arranged inside the fixed box; the lead screw is arranged inside the power box; and the top of the lead screw is rotatably connected to the top of the inner wall of the power box. According to the network monitoring device disclosed by the invention, the rotary motor, the worm gear and the worm are matched for use, so that angle adjustment of the camera is realized, all-around rotation of the camera can be realized, adjustability is strong, and large-range monitoring is convenient. The monitoring device is conveniently dismounted, so that the problem that the monitoring device is accumulated with dust and is difficult to clear while not used for a long time is avoided.

The invention discloses a wireless transceiver device with built-in antenna, which includes a wireless communication module and an installation base, the first rotating plate of the installation base can rotate in the plane where the first rotating plate is centered on the center of the circle; the first connecting rod The lower end is fixed at the center of the first rotating plate, and the upper end is rotationally connected to one end of the second connecting rod; one side of the second fixing plate is fixedly connected to the other end of the second connecting rod, and the other side is connected to one side of the second rotating plate, wirelessly The communication module is fixed on the other side of the second rotating plate, and the second rotating plate can rotate in the plane where the second rotating plate is centered on its center of circle. The present invention has an installation base through which the wireless communication module can be fixed on the wall or on the top, and after being fixed, the multi-directional rotation of the wireless communication module can be realized, so as to adjust the position of the antenna and ensure the required receiving strength. It will not cause signal strength changes due to location changes in the later stage. Installation and debugging are very convenient.

The invention relates to a universal multi-form fixed pipe rolling device which can rotate in multiple directions, can adapt to various use environments, is good in reliability and low in production cost, and meanwhile, a pipe or a rod for height adjustment is easy to replace, and the outer wall surfaces of the two sides of a shell in the pipe rolling device are each concaved inwards to form a circular shaft groove. Two mounting plates are oppositely arranged on the upper end face of the pipe coiling device overturning base, the inner wall faces of the two mounting plates are each provided with a circular shaft, the pipe coiling device is installed between the two mounting plates through the circular shaft grooves and the corresponding circular shafts in an inserted fit mode, and the upper end of the pipe coiling device rotating base is a shaft head. An inserting hole is formed in the lower end face of the pipe coiling device overturning base, and the pipe coiling device overturning base is installed on the pipe coiling device rotating base in an inserting fit mode through the inserting hole and the shaft head of the pipe coiling device rotating base. The pipe coiling device has the advantages that the pipe coiling device can rotate in multiple directions; and secondly, a flange plate and a drill bit are arranged, so that the multidirectional rotating pipe coiling device is suitable for various environments and scenes.

The invention discloses a flexible multidirectional reaction liquid releasing connector. The flexible multidirectional reaction liquid releasing connector comprises a lower fixing block, a round ball kettle, an elbow cross beam and a longitudinal through pipe arranged at the upper end of the round ball kettle. The round ball kettle is arranged in the lower fixing block. A turning sleeve is connected to the longitudinal through pipe in a sleeving mode. One end of the elbow cross beam communicates with the turning sleeve. A bent liquid outlet is formed in the other end of the elbow cross beam. An upper fixing block is arranged at the upper end of the joint of the elbow cross beam and the longitudinal through pipe, and fixing of the longitudinal turning sleeve can be assisted through the arrangement of the upper fixing block. A longitudinal notch is formed in the upper end face of the turning sleeve. Downward screwing of the turning sleeve can be assisted through the arrangement of the notch. According to the flexible multidirectional reaction liquid releasing connector, through the arrangement of the turning sleeve, multidirectional rotation of the elbow cross beam is achieved, use requirements under various conditions are met, and the application range is widened.

The invention belongs to the field of mobile phone auxiliary equipment, and specifically relates to a vehicle-mounted mobile phone holder with an automatic locking function, including: a support component and a clamping component, and the support component is arranged under the clamping component to form a support for the clamping component; The support component can realize the multi-angle and multi-directional rotation of the clamping component in the three-dimensional space through the spherical universal head, the horizontal rotating head and the rotating shaft; , Left and right four directions form clamping and locking.

Provided is a manipulator capable of rotating in multiple directions. A junction box is fixed on a base, and a first speed reducer 3 is fixed on the junction box; a rotating shaft of a first motor and an input shaft of the first speed reducer are fixed together, a second speed reducer is fixed on an output shaft of the first speed reducer, and a rotating shaft of a second motor and an input shaft of the second speed reducer are fixed together; a large arm is fixed on an output shaft of the second speed reducer, and a hinge shaft is formed on or fixed to the large arm; a small arm is a hollow box body, and the hinge shaft is inserted into the small arm in a sleeved mode; a third motor is fixed on the small arm, a driving gear is fixed on a rotating shaft of the third motor, and a fixed gear is fixed on the hinge shaft and engaged with the driving gear; and a compression nut is in threaded connection with the hinge shaft and presses the small arm. The manipulator is simple in structure, capable of rotating in multiple directions, and capable of rapidly achieving automatic opening and closing of the clamping arms, so that the effect of rapid feeding and discharging of circular workpieces is achieved.