55results about How to "Easy to control rotation" patented technology

The invention relates to the technical field of welding equipment, in particular to a supporting device for welding, which includes a base, and support columns are installed on both sides of the upper part of the base, and the upper parts of the two support columns are provided with installation grooves, and the installation grooves The second gear is installed in both rotations, the upper part of the base is close to the fixed column installed between the two supporting columns, the rotating shaft is installed in the bearing, and the two ends of the rotating shaft are respectively connected with the two second gears. A fixed ring is installed between the supporting plates of the block, and a first gear is installed in the middle of the fixed ring, and the first gear meshes with the second gear. The slider is installed in the chute, and the fixed At least three object fixing devices are installed at both ends of the ring at equal distances in the circumferential direction. The invention is simple in structure, easy to use, can rotate materials, and can weld from multiple directions of materials, reducing the difficulty of welding and improving the quality of welding.

The invention discloses a plastic pipe expanding device capable of processing pipe openings in different sizes. The plastic pipe expanding device comprises a supporting base and a lead; an external wire slot is formed in the outer side of the supporting base, and the lead is fixed inside the external wire slot; a heating mechanism, a fixing mechanism and an expanding mechanism are mounted on the upper side of the supporting base, the heating mechanism is positioned between the fixing mechanism and the expanding mechanism, an internal wire slot is formed in the upper side of the supporting base, and the heating mechanism is mounted on the upper side of the internal wire slot. The plastic pipe expanding device capable of processing the pipe openings in different sizes, disclosed by the invention, has the benefits that as the heating mechanism, the fixing mechanism and the expanding mechanism are arranged on the device, the use of a connector during the plastic pipe connection can be avoided, and the problem that the use cost of plastic pipes is increased due to the use of the connector is also solved; only one connection position can exist between the two plastic pipes, so that the probability of leakage at the connection of the plastic pipes is reduced, and the service performances of the plastic pipes are improved.

The present invention discloses a microscope supporting arm for oral cavity and otolaryngology departments. The microscope supporting arm comprises a pedestal and a microscope, four rollers are rotationally connected with four corners at the lower surface of the pedestal, the pedestal is internally provided with a cavity, a spacing mechanism configured to restrict rolling of the rollers is fixedlyconnected at the side wall of the cavity, the upper surface of the pedestal is fixedly connected with a support rod, the upper end face of the support rod is in horizontal contact with a first support plate, the support rod is internally provided with a control cavity, the side wall of the control cavity is rotationally connected with a lifting mechanism configured to lift the first support plate, and the upper end face of the first support plate is rotationally connected with a second support plate through a rotation shaft. The microscope supporting arm for oral cavity and otolaryngology departments can regulate the demand of the support arm as required, and can control a brake devices on the rollers by feet so as to prevent medical workers' hands from touching dust on the ground or thepedestal, guarantee the patients' health on some extent and bring convenience for the medical workers.

The invention discloses a wall brick attaching auxiliary fixing device for building construction. The wall brick attaching auxiliary fixing device comprises a base. A movable plate is movably connected to the upper surface of the base. Object carrying plates are arranged on the side wall of the movable plate at equal intervals and are horizontally and fixedly connected to the side wall of the movable plate. The upper surfaces of the object carrying plates are connected with moving plates in a sliding mode. Suction discs are fixedly connected to the side walls, away from a fixing plate, of themoving plates. By means of the wall brick attaching auxiliary fixing device, attached wall bricks can be effectively pressed and fixed, and meanwhile, wall bricks with different heights can be extruded and fixed, unevenness caused by the increased stressing difference between the wall bricks can be avoided, and convenience is brought to a worker.

The invention relates to the technical field of agricultural machinery, in particular to a duckbilled transplanting device for being used on a transplanter. The duckbilled transplanting device comprises a fixed frame, a first fixed disc, a second fixed disc, a rotating shaft, a first rotating disc, a second rotating disc, a matched ring disc and multiple duckbill components, the first fixed disc is fixedly arranged on the rear side face of a front plate of the fixed frame, the second fixed disc is fixedly arranged on the front side face of a rear plate of the fixed frame, and the front end ofthe rotating shaft is eccentrically arranged on the first fixed disc while the rear end of the same is eccentrically arranged on the second fixed disc; the first rotating disc and the second rotatingdisc are arranged on the rotating shaft and between the first fixed disc and the second fixed disc, the duckbill components are peripherally hinged between the first rotating disc and the second rotating disc, the matched ring disc is arranged between the second fixed disc and the second rotating disc, and the outer ring of the matched ring disc is hinged to the rear end of each duckbill componentthrough a hinging rod. The duckbilled transplanting device has the advantages that transplanting efficiency is improved while transmission efficiency is improved, and duckbill opening-closing uniformity is improved, so that transplanting quality is improved.

The invention discloses a wardrobe with dehumidifying effects. The wardrobe with the dehumidifying effects comprises a wardrobe body, a wardrobe door and a dehumidifying device, wherein the wardrobe door is arranged on the surface of the wardrobe body and rotatingly connected to the wardrobe body; the dehumidifying device is arranged at the bottom of the wardrobe body; the inside of the wardrobe body is provided with a clothes hanging horizontal bar; both side surfaces of the wardrobe body are provided with fixing blocks which are longitudinally uniformly distributed and fixedly connected withthe wardrobe body, and the clothes hanging horizontal bar is in contact connection with the fixing blocks; the dehumidifying device comprises a humidity sensor, a controller, a motor and a fan, the fan is fixedly connected with the output end of the motor, and wires are arranged between the controller and the humidity sensor as well as the motor. The dehumidifying device arranged at the bottom ofthe wardrobe body can facilitate detection of humidity of air inside the wardrobe body as well as control the motor to drive the fan to rotate, so that air inside the wardrobe body and outside air can be circulated to remove moisture inside the wardrobe body and further improve the structural strength of the wardrobe and prolong the service life of the wardrobe.

The invention belongs to the technical field of pitch production and particularly provides a pitch mixing unit process monitoring system. A control plate is fixedly connected to the upper end of a supporting plate. Multiple second suckers are fixedly connected to the upper surface of the control plate. A cavity is formed in the control plate. A rolling wheel is connected to the side wall of the cavity in a rotating manner. A rotating shaft is fixedly connected to the rolling wheel. One end of the rotating shaft penetrates through the side wall of the cavity and is fixedly connected with a rotary knob. The side wall of the rotary knob is provided with a ring-shaped groove. A fixed ring is fixedly connected to the side wall of the ring-shaped groove. Multiple first springs are fixedly connected to the side wall of the fixed ring. The ends of the first springs are fixedly connected with a moving ring. Multiple inserting rods are fixedly connected to the side wall of the moving ring. According to the system, a carrier plate can be fixed to a mixing device conveniently, the position for monitoring can be adjusted conveniently at the same time, and therefore the pitch mixing unit processmonitoring system is worthy of being popularized.

The invention discloses a device for depositing diamond coating layers and a preparation method of deposited diamond coating layers. The device for depositing the diamond coating layers comprises a vacuum cavity, and a sample table arranged in the vacuum cavity; the sample table comprises a transmission rod and multiple fixtures; each fixture comprises a clamping part, and a connecting rod fixedlyconnected with the clamping part; driven wheels are arranged on the connecting rods; and the transmission rod drives the driven wheels to rotate to realize rotation of the clamping parts. The preparation method of the deposited diamond coating layers is to use the device for depositing the diamond coating layers to grow uniform diamond coating layers on surfaces of molds, in particular in microholes of microhole wire drawing molds; and the bonding strength between the diamond coating layers and the molds is improved.

The invention discloses a device for coating the surface of paper with polyvinyl alcohol. The device comprises a box body, a motor and paper, wherein the motor is fixedly connected to the upper surface of the top plate of the box body, plural sets of conveying rollers are rotationally connected to the inner side wall of the box body, the output shaft of the motor is in transmission connection withthe conveying rollers through a belt, containing boxes arranged in a staggered manner are fixedly connected to the inner side wall of the box body, a heating drying lamp is arranged on one side of the containing box and fixedly connected to the inner side wall of the box body, a material inlet and a material outlet hole are formed in the side wall of the box body, and the material outlet hole ispositioned on the upper side of the material inlet hole and is parallel to the material inlet hole. According to the invention, with the device, the front surface and the back surface of paper can becoated with polyvinyl alcohol, the drying speed of the polyvinyl alcohol coated on the paper can be increased, the polyvinyl alcohol coated on the paper is prevented from being adhered to the conveying rollers, the coating effect of the polyvinyl alcohol on the paper is guaranteed, and the convenience is brought to workers.

The invention relates to the technical field of baking equipment, in particular to a baking machine with a rotatable baking chamber, which includes an oven, the bottom of the oven is provided with support legs, the inner side of the oven is provided with a partition, and the upper part of the partition is A drive chamber is provided, and a motor is arranged inside the drive chamber, a baking chamber is provided on the lower side of the partition, a heating wire is installed on the inner wall of the baking, and a top center of the two first support plates is installed The first rotating shaft, the first gear and the fourth gear are arranged alternately, the second gear and the third gear are arranged horizontally, the bottom of the installation box is provided with a fourth bearing, and the second rotating shaft is arranged in the fourth bearing , the fifth gear and the fixing hole are connected to the second rotating shaft through a pin rod. The present invention has a simple structure and can evenly rotate the baking frame to ensure that the baked food can be heated evenly, and can save resources and ensure the taste of the baked food .

The invention discloses a double-head hand-pressing rotating mop capable of facilitating control of rotation of a dewatering basket. The double-head hand-pressing rotating mop comprises a mop rod and a double-head mop disc. The mop rod is connected with a driving sleeve. The driving sleeve is connected with a rotating piece. The rotating piece is fixedly arranged on the double-head mop disc through a clamping piece. The double-head hand-pressing rotating mop is characterized in that a groove is arranged at the middle part of the double-head mop disc, a swinging fastener is arranged in the groove, the middle part of the swinging fastener is fixedly arranged on a shaft, clamping teeth are arranged on the inner side end of the swinging fastener, tongue parts are arranged on the outer side end of the swinging fastener, the roots of the tongue parts are connected with clamping springs, the tongue parts can stretch out of the groove and retract into the groove through holes which are formed in the side walls of the groove, and clamping ports which are engaged with the clamping teeth are formed in the rotating piece. Compared with the prior art, the double-head hand-pressing rotating mop capable of facilitating control of rotation of the dewatering basket has the advantages that the structure is ingenious, the design is reasonable, the practicability is high, the orientation and the direction of the mop disc can be controlled conveniently, the mop can be cleaned more conveniently, the cost is low and the mop is simple to manufacture.

The invention discloses a safe and convenient controllable woodworking mechanical device, which comprises a workbench, supporting legs and an electric saw. A movable baffle is arranged on one side of the top end of the workbench. There is a support plate at the bottom, a number of support legs are provided on the bottom edge of the support plate, a motor is provided on one side of the support plate, a lifting platform is provided in the middle of the top of the support plate, a top plate is provided on the top of the lifting platform, and a horizontal plate is provided on the top of the top plate , there is a chute inside the top of the horizontal plate, a slider matching the chute is provided on the chute, brackets are provided on both sides of the top of the slider, and an electric saw is connected between the two sides by bolts. The rotating shaft of the motor one is connected in rotation, and the outer side of the slider is connected with the connecting rod one. Beneficial effect: the electric saw can be driven to rotate along the chainsaw mouth through the slider, so that the chainsaw can be driven to rotate only by moving the slider, and there is no need to manually move the wood to slide along the chainsaw mouth, which can greatly improve safety .

The invention discloses an automatic film wrapping machine for a yarn roll, the automatic film wrapping machine comprises a film pressing mechanism used for pressing a film led out and cutting off the film; a film feeding mechanism is arranged on one side of the film pressing mechanism and used for placing a film and controlling the tightness degree of the film, the film feeding mechanism comprises a driving roller and film feeding rollers, the driving roller is arranged below the film feeding rollers, the film is wound on the outer side face of the driving roller, one end of the driving roller is connected with a motor, the number of the film feeding rollers is at least two, and the film feeding rollers are arranged side by side and used for tensioning and flattening the film; a film wrapping mechanism is arranged on the other side of the film pressing mechanism and used for placing the yarn roll and controlling the yarn roll to rotate; a film taking mechanism is arranged on the rear side of the film wrapping mechanism and used for grabbing and turning over the film to be tightly attached to the surface of the yarn roll. According to the automatic film wrapping machine for the yarn roll, the film wrapping operation on the yarn roll can be completed in the whole process through the machine, manual intervention is not needed, the intelligent degree is improved, and the labor intensity of workers is reduced.

The invention discloses an anti-layering device for a pure colloid storage battery, which comprises a box body, wherein a moving plate is in contact with the inner side wall of the box body, a plurality of through holes are formed in the moving plate, the moving plate is in threaded connection with a threaded rod, the lower end of the threaded rod is fixedly connected with a rotary rod, the lowerend of the rotary rod is rotationally connected to the upper surface of a bottom plate of the box body, a rotating rod is rotatably connected to the upper surface of the bottom plate of the box body,the upper end of the rotating rod penetrates through the moving plate and extends to the upper side of the moving plate, stirring mechanisms are fixedly connected to the rotary rod and the rotating rod, and a rotating mechanism for controlling the threaded rod and the rotating rod to rotate is arranged in a top plate of the box body; and a movable rod is arranged in the box body, and two containing grooves are formed in the inner side wall of the box body. According to the invention, the layering phenomenon of a colloid electrolyte can be effectively prevented, the replacement of the colloid electrolyte is avoided, the waste of resources is avoided to a certain extent, and the use quality of the colloid storage battery is guaranteed.

The invention discloses an automatic copper-clad plate turnover structure capable of changing the turnover number. The structure comprises a rectangular frame and a motor, the motor is fixedly connected to the outer side wall of the rectangular frame, an output shaft of the motor penetrates through the side wall of the rectangular frame and extends into the rectangular frame, connecting frames aremounted in the rectangular frame at equal distances, two connected connecting frames are rotatably connected, the output shaft of the motor penetrates through the side wall of the rectangular frame and is fixedly connected to the outer side wall of one connecting frame, limiting plates which are symmetrically mounted are mounted on the lower surfaces of connecting blocks in a contact manner, andthe limiting plates are elastically connected to the rectangular frame. Multiple copper-clad plates can be turned over automatically and conveniently, according to needs, the turnover number of copper-clad plates can be adjusted, and convenience and rapidness are brought to a worker.

The invention discloses a chemical table game teaching aid, a cavity is arranged in the bottom plate of the box body, a rotating shaft is rotatably connected with the side wall of the cavity, a control mechanism for controlling the rotation of the rotation shaft is rotatably connected to the side wall of the cavity, the upper end of the rotary shaft passes through the side wall of the cavity and is fixedly connected with a rotary table, the outer side of the turntable is provided with an annular plate, the lower end face of the annular plate is fixedly connected with the upper surface of the box bottom plate, the upper surface of the box bottom plate is contacted with four load boxes, the side wall of the load box is provided with a gap, and four pushing mechanisms for pushing the load boxes are fixedly connected with the turntable, and the upper end face of the annular plate is fixedly connected with the upper surface of the box bottom plate. The invention not only can collect and divide 520 chemical cards by itself, but also can save time to a certain extent, improve students' interest in learning chemistry, strengthen students' memory of chemical knowledge points, and make students study happily.

The invention discloses a medical bandage cleaning and sterilizing device. The device comprises a shell, a motor is arranged at the middle part of the top end of the shell, the output shaft of the motor is connected with a first rotating shaft, the first rotating shaft extends into the shell, a part, positioned at the upper part in the shell, of the rotating shaft is provided with a first gear, aposition, below the first gear, of the first rotating shaft is provided with a fixed sleeve, a fixed plate is arranged at the top end of the fixed sleeve, the first rotating shaft goes through the fixed plate and extends to the bottom of the fixed sleeve, a second gear is arranged outside the fixing sleeve, a first rotating cylinder is arranged at the bottom end of the fixed sleeve, the first rotating shaft extends to the bottom of the first rotating cylinder, a connecting plate is arranged at the bottom end of the first rotating shaft, a telescopic rod is arranged at the bottom end of the connecting plate, a second rotating cylinder is arranged at the bottom end of the telescopic rod, a plurality of stirring blades are arranged outside the first rotating cylinder and the second rotating cylinder, a third gear adapting to the second gear is arranged at one side edge of the second gear, a second rotating shaft is arranged at the top end of the third gear, and the top end of the second rotating shaft is connected with the output shaft of the second motor.

The invention relates to the technical field of forging, in particular to a forging device and a forging method for a special material forge piece of maritime work equipment, the forging device comprises a ring forging replacing mechanism, the ring forging replacing mechanism comprises a forging table, an outer anvil piece, a clamping anvil piece and an inner anvil piece, and the outer anvil piece, the clamping anvil piece and the inner anvil piece slide on the forging table in a collinear mode. The outer anvil piece comprises an outer anvil wheel rotating on the forging table, and the outer anvil wheel comprises a special-shaped wheel used for extruding the outer side of the forged piece to be forged. The inner anvil wheel of the clamping anvil wheel is tangent to the inner side of the to-be-forged forge piece, the rotating inner anvil wheel moves in the direction away from the clamping anvil wheel, meanwhile, the pressing disc is matched with the inner tray and the outer anvil wheel, horizontal outward ring expansion forging of the to-be-forged forge piece is achieved, rotation of the to-be-forged forge piece is conveniently controlled, the operation degree is low, and the forging efficiency is high. And meanwhile, the to-be-forged forge piece is gradually expanded outwards, so that extrusion forming of the to-be-forged forge piece by the pressure plate and the inner tray is facilitated, extrusion forming of the outer side of the to-be-forged forge piece by the outer anvil wheel is facilitated, and the forging efficiency and the forging effect are improved.

The invention discloses an electrode bar horizontal cutting device for electrolytic aluminum. The electrode bar horizontal cutting device comprises a bottom plate. Supporting legs are arranged on the lower end face of the bottom plate, a rotating shaft is rotationally connected to the upper end face of the bottom plate through a bearing, a driving mechanism which is used for driving the rotating shaft to rotate is arranged on one side of the rotating shaft, and a fixing disc is arranged at the upper end of the rotating shaft. At least two clamping mechanisms which are used for clamping electrode bars are evenly distributed at the upper end of the fixing disc, a cutting machine is arranged on one side of the fixing disc and fixed to the upper end of a supporting plate, and the supporting plate is connected with a lifting mechanism which is used for controlling the cutting machine to move up and down. A displacement sensor is arranged on the lifting mechanism, the displacement sensor and the cutting machine move at the same time, and the displacement sensor and a cutting wheel on the cutting machine are located on the same plane. According to the electrode bar horizontal cutting device for electrolytic aluminum, the cutting efficiency can be effectively improved, it is guaranteed that the lengths of the electrode bars in each batch are the same, and the use convenience is greatly improved.

The invention discloses an ultrasonic frequency conversion handheld shock wave physiotherapy machine, and belongs to the field of medical instruments. An ultrasonic frequency conversion handheld shock wave physical therapy machine comprises a physical therapy machine body and a handle, the side wall of the physical therapy machine body is fixedly connected with a take-up shell, a hollow pipe is rotatably connected in the take-up shell, the side wall of the hollow pipe is provided with a wire outlet hole, the handle is connected with a wire, and the wire outlet hole is communicated with the wire outlet hole. The end, away from the handle, of the wire penetrates through the wire outlet hole, extends to an inner cavity of the hollow pipe and is electrically connected with the physiotherapy machine body, the wire penetrates through the wire collecting shell, and the hollow pipe is provided with a limiting mechanism used for limiting free rotation of the hollow pipe. Through the arrangement of the take-up shell, the hollow pipe and the limiting mechanism, the wire can be taken up and paid off conveniently, winding of the wire or winding of the wire and an external object is avoided, the risk of wire damage is reduced, and the service life of the wire is prolonged.

The invention discloses a deep well salvaging device which comprises a fixing plate. Symmetrically-arranged supporting plates are fixedly connected to the lower surface of the fixing plate, and a steel wire rope, symmetrically-arranged limiting wheels and a clamp are further included; a winding wheel is rotationally connected to the supporting plates, the steel wire rope is wound around the winding wheel, and a fixing block is fixedly connected to the lower end of the steel wire rope; the limiting wheels are symmetrically arranged relative to the fixing block and are elastically connected to the fixing block; the lower surface of the fixing block is rotationally connected with a rotating block, and the clamp is rotationally connected to the rotating block; and a protective cover is fixedlyconnected to the lower surface of the rotating block, a monitor and a plurality of illuminating lamps are arranged in the protective cover, and the monitor and the illuminating lamps are fixedly connected to the lower surface of the rotating block. By means of the deep well salvaging device, salvaging personnel can salvage objects in a deep well and rescue personnel conveniently, the salvaging personnel can observe the internal condition of the deep well conveniently, and therefore the salvaging efficiency of the salvaging personnel is improved.

The invention belongs to the technical field of operation nursing carts, and particularly discloses a nursing cart for a nurse in a hair transplantation operation. The nursing cart comprises a cart main body, wherein the cart main body comprises a plurality of vertical support rods, and a first sliding seat and a second sliding seat are vertically connected to the support rods in a sliding mannerrespectively; a plurality of supporting plates hinged end to end are hinged to the side wall of the first sliding seat, and a torsional spring is arranged between every two adjacent supporting plates;and a gear meshed with a rack is rotationally connected to the side wall of the cart, a second chain wheel is coaxially and fixedly connected to the gear, and a first chain wheel and the second chainwheel are in synchronous transmission through a chain. The invention aims to provide the nursing cart for the nurse in the hair transplantation operation, so as to solve the problem that the legs ofthe nurse are curled up for a long time in the hair transplantation operation.

The invention discloses a self-lubricating mechanical commutator. The self-lubricating mechanical commutator comprises a commutator body, reversing pieces, a gasket, a reinforcing ring, mica sheets and a bush; clamping grooves matched with the reversing pieces are formed in the outer side wall of the commutator body at equal intervals; the reversing pieces are clamped in the clamping grooves, andthe mica sheets are arranged between the two reversing pieces; the commutator body is sequentially sleeved with the reinforcing ring and the gasket from the upper end and the lower end to the middle;one end, far away from the commutator body, of the reinforcing ring is clamped at the end parts of the reversing pieces and the mica sheets; the bush is fixedly connected to the inner side wall of thecommutator body; an annular cavity for containing a lubricant is formed in the side wall of the commutator body; according to the commutator, the commutator can be lubricated automatically, so that manpower and time are saved; and the lubricant seeps out of the outside through the interior of the commutator, so that the friction in the commutator can be reduced, and the service life of the commutator is prolonged to a certain extent.

The invention belongs to the technical field of surgical nursing trolleys, and specifically discloses a nursing trolley for hair transplant surgery nurses, which includes a main body of the trolley, and several vertical support rods on which the support rods are respectively vertically slidably connected with a first One sliding seat and the second sliding seat, the side wall of the first sliding seat is hinged with several support plates hinged at the end and the end, and a torsion spring is arranged between adjacent support plates, and the side wall of the trolley is rotatably connected with a gear for meshing with the rack , the gear is coaxially fixedly connected with a second sprocket, and the first sprocket and the second sprocket are synchronously driven by a chain. The object of the present invention is to provide a nursing trolley for hair transplant surgery nurses to solve the problem that the nurse's legs curl up for a long time during the hair transplant surgery.

The invention discloses a chain type cutting head, comprising a fixed plate, the lower surface of the fixed plate is fixedly connected with a box body, the lower end surface of the box body is fixedly connected with a connecting frame, and the lower surface of the connecting frame is fixedly connected with There are symmetrically arranged connecting plates, the side walls of the connecting plates are fixedly connected with fixed rods, the inner side walls of the box body are rotatably connected with rotating shafts parallel to the fixed rods, and the rotating shafts and the fixed rods are both sleeved with A symmetrically arranged sprocket, a chain is sheathed on the sprocket, and a cutting knife is fixedly connected to the chain at equidistant distances; the present invention can avoid disassembly of the cutting knife when the cutting knife is replaced, saving manpower and Time has brought convenience to the staff.

The invention discloses a solar panel fixing and placing frame with a protection function. The solar panel fixing and placing frame comprises a solar panel placing and fixing device which comprises asolar panel placing frame. An inner cavity is formed in the solar panel placing frame, and a solar panel fixing inner frame is arranged inside the inner cavity and comprises a hardened bottom plate. According to the invention, the internal solar power generation panel is effectively protected, and a transparent glass protection cover is in a transparent state, so that solar power generation operation of the solar power generation panel in the daytime is not influenced. The solar power generation panel is controlled to face downwards, so that the hardened bottom plate is positioned above, and the inner solar power generation panel can be protected through the hardened bottom plate. Damage to the solar power generation panel is prevented, and the protection function is achieved. The problemthat a solar panel may be damaged and the use of the solar panel is affected due to the fact that a conventional solar panel fixing and placing device does not have the protection function is effectively solved.

The invention relates to a fruit juicing device. The fruit juicing device comprises a feeding hopper provided with a feeding port; a seal cap is arranged on the feeding port; a barrel-shaped rotating shaft is rotatably connected in the feeding hopper; a first motor is connected to the enclosing end of the rotating shaft; the rotating shaft is connected to rotating cutters; the rotating cutters penetrate the rotating shaft wall and are in sliding connection with the rotating shaft wall; the bottom of each rotating cutter is a wedge surface; a first elastic element is connected between each rotating cutter and the rotating shaft wall; a slide bar extending to the outer side of the rotating shaft is slidably connected in the opening at one end of the rotating shaft; the slide bar is provided with arc-shaped projections, wherein the arc-shaped projections and the rotating cutters are arranged in a staggered manner; a swing rod with one end hinged is arranged at one end, far from the rotating shaft, of the slide bar; one side of the swing rod is connected to a second elastic element with one end fixed; the swing rod abuts against a cam; the cam is connected to a second motor; the swing rod is in sliding connection with a slide block; and the slide bar is hinged to the slide block. Compared with the prior art, the rotating cutters are driven to move back and forth through the slide bar, so that the juicing efficiency is improved.

The invention discloses a desk. The desk includes an operating table, a locker and an office rack, and the locker and the office rack are respectively located on both sides of the desk; the operating table can store items and work; the office rack can place items; the locker includes a rotating bracket, a drive unit, and a shaft frame and two boxes, the two ends of the rotating bracket are respectively provided with two circular cavities, the two boxes are respectively located in the two cavities, the circular cavity is provided with a bearing ring, the bearing ring and the inner wall of the cavity Rolling connection, the bearing ring and the box are rollingly connected, the two ends of the shaft frame are respectively connected to the rotating bracket and the operating table, the drive unit is located inside the shaft frame, and the driving unit can drive the rotating bracket to rotate around the shaft frame, and each rotation is 180 degrees. The invention has the effects of simple structure and convenient use.

The invention discloses a chain type cutting head. The cutting head comprises a fixing plate, wherein a lower surface of the fixing plate is fixedly connected with a box body, a lower end surface of the box body is fixedly connected with a connecting frame, symmetrically-arranged connecting plates are fixedly connected with a lower surface of the connecting frame, a fixing rod is fixedly connectedwith a side wall of the connecting plate, a rotating shaft parallel to the fixing rod is rotatably connected with an inner side wall of the box body, the rotating shaft and the fixing rod are sleevedwith symmetrically-arranged chain wheels, the chain wheels are sleeved with chains, and the chains are fixedly connected with cutting knives at equal intervals. The cutting head is advantaged in thatwhen a cutting knife is replaced, the cutting knife can be prevented from being disassembled, the manpower and the time are saved, and convenience is brought to workers.