33results about How to "Increase displacement travel" patented technology

The invention discloses a pressure-control type electric pressure cooker. A sealed body is formed by sequentially connecting a pot cover, a seal ring, an inner pot and an outer pot; a plurality of belleville springs, which are provided with opening grooves, are arranged between a heating plate and the outer pot; upper supporting rings are formed by horizontally flanging the small-diameter ends of the belleville springs towards inner sides, and lower supporting rings are formed by the big-diameter ends of the belleville springs; an elastic deformation area is formed by a conical wall parts between each of the upper supporting rings and each of the lower supporting rings; the elastic deformation areas penetrate through the upper supporting rings in a radial direction and extend to conical body parts, and the opening grooves that contour lines projected on a horizontal plane are in a cross form are formed; the opening grooves are of gradually expanded structures with upsides smaller than downsides from openings to bottoms; the lower supporting rings are supported on the bottom of the outer pot; the upper supporting rings are propped against supporting legs of the heating plate; and the supporting legs and the belleville springs are integrally positioned with and connected to the outer pot by virtue of fixed screws. The amount of elastic deformation of the electric pressure cooker is effectively improved by virtue of the belleville springs, and the change in induction pressure of a pressure detection device is more conveniently to be detected, so that the precision and the safety stability of pressure control are improved.

The invention discloses a novel intelligent shock absorber integrating multilayer magnetorheological elastomers with a magnetorheological damper. The shock absorber comprises the magnetorheological damper and a variable stiffness device comprising the multilayer annular magnetorheological elastomers and magnetorheological elastomer magnet exciting coil windings mounted between the multilayer annular magnetorheological elastomers respectively, wherein the magnetorheological damper comprises a cylinder barrel; the cylinder barrel is connected to the top end of the shock absorber through a spring; a piston plate is arranged in the cylinder barrel; a piston rod is fixedly connected to the lower side of the piston plate; the other end of the piston rod penetrates out of the cylinder barrel and is fixed at the bottom end of the shock absorber; a magnetorheological damper magnet exciting coil winding is wound on the side wall of the piston plate; the cylinder barrel is filled with a magnetorheological fluid; a damping device is connected with the variable stiffness device in parallel or in series. Due to the integration of the multilayer magnetorheological elastomers and the magnetorheological damper, the stiffness and damping change range of the shock absorber is relatively large, a relatively good shock absorption effect can be achieved, and the shock absorber is compact in structure.

The invention discloses a multilayer magneto-rheological elastomer shock absorber which is bidirectionally regulated in rigidity. The multilayer magneto-rheological elastomer shock absorber comprises a thin magneto-rheological elastomer layer, a thin magnetic conducting metal layer, a permanent magnet, an upper base and a lower base, wherein the thin magneto-rheological elastomer layer and the thin magnetic conducting metal layer are continuously in glued joint with each other and are superposed to form a magneto-rheological elastomer, the upper end and the lower end of the magneto-rheological elastomer are respectively in glued joint with the permanent magnet and then are installed between the upper base and the lower base, and the permanent magnet is in threaded connection with the upper base and the lower base. The multilayer magneto-rheological elastomer shock absorber further comprises a magnetic conducting framework and magnet exciting coils, wherein the magnetic conducting framework is nested or surrounds the inner side or the outer side of the multilayer magneto-rheological elastomer between the upper base and the lower base, the lower end of the magnetic conducting framework is fixedly connected with the lower base, and a gap is reserved between the upper end of the magnetic conducting framework and the upper base. The multilayer magneto-rheological elastomer and the magnetic conducting framework are provided with the magnet exciting coils, and a longitudinal section formed by the multilayer magneto-rheological elastomer and the magnetic conducting framework is in a shape of a Chinese character 'chuan'. The multilayer magneto-rheological elastomer shock absorber is compact in structure, simple in structure, large in working stroke and capable of saving a space and achieving bidirectional rigidity regulation.

The invention relates to a roller type vibration auxiliary polishing device and method, and belongs to the field of ultraprecise machining. A Z-direction motion platform is connected with a first Z-axis motion system and a second Z-axis motion system through screws, the first Z-axis motion system and the second Z-axis motion system are connected with a base platform through screws, a first X-direction motion platform is connected with a first X-axis motion system and a second X-axis motion system through screws, the first X-axis motion system and the second X-axis motion system are connected with the base platform through screws, a second X-direction motion platform is connected with a third X-axis motion system through a second screw, the third X-axis motion system is connected with the base platform through a screw, and a compound type vibration platform is connected with the second X-direction motion platform through a screw. The device and method have the beneficial effects that polishing efficiency is high, polishing uniformity and consistency are good, and polishing treatment and real-time online repairing of the curve face can be finished.

The invention discloses a displacement amplification ultrasonic linear motor which mainly comprises a motor stator with a centre hole and a motor rotor penetrating in the center hole, wherein the motor stator mainly comprises a stator shell as well as a radial groove and an axial groove which are arranged on the stator shell; the radial groove and the axial groove are radially arranged and axially arranged along the center hole respectively; one end of the radial groove is communicated with the center hole; the left side or right side of the radial groove is provided with a spring groove communicated with the radial groove; the axial groove is positioned on the right side or left side of the radial groove and communicated with the radial groove; a radial piezoelectric strip is arranged inthe radial groove; an axial piezoelectric strip is arranged in the axial groove; and a spring is arranged in the spring groove. The invention also discloses a working method of the displacement amplification ultrasonic linear motor. The displacement amplification ultrasonic linear motor disclosed by the invention has the advantages of large thrust, high efficiency, low loss, high speed and long service life.

The invention discloses a machining fixing and limiting mechanism capable of adjusting limiting strength conveniently. The machining fixing and limiting mechanism comprises a fixed workpiece, clampingmechanisms, adjusting and control mechanisms and a transmission mechanism. The adjusting and control mechanisms are in symmetric threaded rotary sliding connection to the inner end face of the transmission mechanism. If users need to adjust the strength of clamping the fixed workpiece, the users can start fixed motors through the outer adjusting and control mechanisms, the fixed motors can drivegear grooves to shift towards the front portion, then connecting baffles and elastic switches are driven to shift towards the front portion, the shift stroke of limiting clamp blocks is indirectly prolonged at this moment, then shifting generated when the limiting clamp blocks pull spring clamp rings is longer, and the strength that the clamping mechanisms clamp and locate the fixed workpiece is improved; and the users can adjust the distance between the connecting baffles and limiting sliding plates, then the clamping strength to the fixed workpiece is adjusted, the users can adjust the strength of clamping the fixed workpiece rapidly and conveniently, and safety performance of clamping the fixed workpiece is improved.

The invention discloses an electrical heating pressure appliance capable of controlling pressure through displacement caused by deformation of an elastic element. The appliance comprises a container cover, a seal ring, a container, an outer pot, a heating disk, the elastic element and a power supply switch. The appliance is characterized in that the elastic element is sleeved on the stand bar of the heating disk, the heating disk, the elastic element and the outer pot are fixed through bolts, and the heating disk is flexibly connected with the outer pot; the lower bottom of an inner pot is stuck to the cambered surface of the heating disk, the cover teeth of a pot cover are buckled with the button teeth of the outer pot, and the seal ring is sleeved on the container cover and respectively adhered to the container cover and the container; and the power supply switch is fixed on the side face of the outer pot through a bracket, and the heating disk and the power supply are connected in series on an alternative current power supply. The electrical heating pressure appliance disclosed by the invention is suitable for an electric pressure cooker, a pressure soymilk machine, a pressure coffee machine and other appliances controlled by using the elastic elements.

The invention discloses an ultrasonic disk motor with a clutch and displacement amplification mechanism. The ultrasonic disk motor comprises a stator with a disk structure and a disk rotor, wherein the disk rotor is sleeved on the outer wall of the stator, and forms sliding fit with the stator. The ultrasonic disk motor is characterized in that: clutching piezoelectric strip grooves extended to the inner wall of the rotor are formed on the end face of one end of the stator; the sidewalls of the clutching piezoelectric strip grooves are communicated with rotating force arm grooves and spring grooves which are opposite to each other respectively; one side, away from the clutching piezoelectric strip groove, of each rotating force arm groove is communicated with a driving piezoelectric stripgroove; a clutching piezoelectric strip is arranged in the clutching piezoelectric strip groove; a rotating force arm is arranged in the rotating force arm groove; a spring is arranged in the spring groove; and a driving piezoelectric strip is arranged in the driving piezoelectric strip groove. The invention also discloses the ultrasonic disk motor with the clutch and displacement amplification mechanism and a working method thereof. The ultrasonic disk motor has strong thrust, high efficiency, low loss and long service life, and can be run at ultralow speed.

The invention discloses a pressure-controlling electric pressure cooker. A pot cover, a sealing ring, an inner pot and an outer pot are sequentially connected to form a sealing body, and several disc springs with opening grooves are arranged between the heating plate and the outer pot. The small-diameter end of the disc spring faces the inner horizontal flanging to form an upper support ring, the large-diameter end of the disc spring forms a lower support ring, and the cone wall between the upper support ring and the lower support ring forms an elastic deformation zone, radially through the upper The support ring extends to the cone and is provided with a cross-shaped open slot whose contour line projected on the horizontal plane. From the notch of the open slot to the bottom of the slot, it has a gradually expanding structure, and the lower support ring is supported on the bottom of the outer pot. , the upper support ring leans against the feet of the heating plate, and the feet and disc springs are positioned and connected to the outer pot as a whole through fixing screws. The disc spring it has effectively increases the amount of elastic deformation, which is beneficial to the pressure detection device to sense pressure changes, thereby improving the pressure control accuracy and safety and stability.

The invention belongs to the technical field of quenching equipment, and particularly relates to metal quenching equipment for metal heat treatment. The metal quenching equipment comprises a quenching machine seat, wherein a plurality of quenching cooling seats which are symmetrical along the central line of the quenching machine seat are arranged on the quenching machine seat; metal induction quenching pieces are arranged in the quenching cooling seats; a middle mounting plate is further arranged on the quenching machine seat; and a plurality of metal clamping portions which are symmetrical along the central line of the middle mounting plate are arranged on the middle mounting plate. According to the metal quenching equipment, an elastic limiting clamping assembly is arranged, so that in a heat treatment process, the elastic limiting clamping assembly can clamp and fix an un-clamped end of a steel tube, synchronously rotates with the steel tube along with heat treatment, and does not interfere with a quenching process, so that stability of the steel tube during quenching is kept, angle deviation of the steel tube in the quenching process is avoided, and quenching uniformity and effect are improved; and moreover, the elastic limiting clamping assembly can be suitable for steel tubes with different diameters, is relatively good in positioning and clamping effect, and is relatively high in practicability.

The invention discloses a fixed limit mechanism for mechanical processing which is convenient for adjusting the limit force, which includes a fixed workpiece, a clamping mechanism, a control mechanism and a transmission mechanism. If the present invention needs the user to adjust the strength of clamping and fixing the workpiece, the user can start the fixed motor through the external control mechanism, and the fixed motor can drive the gear groove to move forward, and then drive the connecting baffle and the elastic switch to move forward. The time directly lengthens the displacement stroke of the limit block, which in turn makes the displacement of the limit block pull the spring snap ring longer, and improves the strength of the clamping mechanism for clamping and positioning the fixed workpiece. The user can connect the baffle according to the adjustment The distance from the limit slide plate further adjusts the clamping strength of the fixed workpiece, which is convenient for the user to quickly and conveniently adjust the clamping strength of the fixed workpiece, and improves the safety performance of clamping the fixed workpiece.

The invention relates to a friction damper device which comprises an outer cylinder assembly, a first rotating piece, a linear rotating assembly and a friction assembly, the outer cylinder assembly is provided with a rotating cavity and a rotating hole, and the rotating hole is communicated with the rotating cavity; the first rotating piece is arranged on the inner wall of the rotating cavity; the linear rotating assembly comprises a lead screw, an inner cylinder and a nut, the inner cylinder is connected with the nut, the lead screw is in threaded connection with the nut, and the inner cylinder is rotationally matched with the first rotating piece; and the friction assembly is arranged on the inner wall of the rotating cavity and is in friction fit with the inner cylinder. According to the friction damper device, linear displacement of the lead screw is converted into rotation of the nut, and the allowable stroke in the energy consumption process can be increased. Besides, on one hand, friction can be generated when the nut and the lead screw are in threaded connection, part of kinetic energy is consumed, meanwhile, the friction assembly generates damping for rotation of the inner cylinder, and then the energy consumption efficiency of the friction damper device is effectively improved.

The invention discloses a two-translation one-rotation large-stroke non-coupling parallel piezoelectric micro-motion platform, which includes a moving platform used to carry objects, a fixed platform body is provided in the lower gap of the movable platform surface, and a first accommodating body is arranged in the middle of the fixed platform body. slot, the gap between the first receiving slot is provided with a moving table body screwed on the moving table surface; the moving table body is also provided with a first conduction part, a second conduction part and a third conduction part; The edge is provided with a gap to accommodate the third receiving groove of the second flexible thin plate; the first drive unit, the second drive unit and the third drive unit of the respective rigid parts of the first conduction part, the second conduction part and the third conduction part; The driving of the first drive unit, the second drive unit and the third drive unit realizes two translational movements and one rotation of the movable platform body and the movable platform surface in the horizontal plane. The invention has the advantages of simple and compact overall structure of the platform, large working surface, large displacement stroke, no parasitic displacement, high natural frequency and easy integration of displacement sensors.

The invention discloses an ultrasonic linear motor with a hydraulic displacement amplification mechanism, which comprises a motor stator with a centre hole and a motor rotor penetrated in the centre hole; the motor stator mainly consists of a stator shell, and a radial groove and an axial groove installed on the stator shell, the radial groove and the axial groove are respectively radially and axially arranged along the centre hole; one end of the radial groove is communicated with the centre hole, and the left side or the right side of the radial groove is provided with a spring groove communicated therewith; the axial groove is positioned at the right side or the left side of the radial groove and communicated with the radial groove; the radial groove is provided with a radial piezoelectric stripe, the axial groove is provided with an axial piezoelectric stripe therein; and a spring is installed in the spring groove. The invention further discloses an operating method of the ultrasonic linear motor with hydraulic displacement amplification mechanism. The ultrasonic linear motor with hydraulic displacement amplification mechanism has the advantages of large thrust, high efficiency, small loss, fast speed and long service life.

The invention discloses a two-translation one-rotation large-stroke uncoupled parallel piezoelectric micro-motion platform which comprises a movable table board used for bearing an object, a fixed table body is arranged below the movable table board in a gap mode, a first containing groove is formed in the middle of the fixed table body, and a movable table body screwed and fixed to the movable table board is arranged in the gap of the first containing groove. The movable table body is further provided with a first conduction part, a second conduction part and a third conduction part. A thirdaccommodating groove for accommodating the second flexible thin plate at an interval is formed in the edge, located in the first accommodating groove, of the fixed table body. A first driving unit, asecond driving unit, and a third driving unit, each of which has a respective rigid portion of the first, second, and third conduction portions. And the first driving unit, the second driving unit andthe third driving unit are driven to realize two translational motions and one rotation of the movable platform body and the movable platform surface in the horizontal plane. The platform has the advantages of being simple and compact in overall structure, large in working table top, large in displacement stroke, free of parasitic displacement, high in inherent frequency and easy to integrate a displacement type sensor.

The invention discloses a two-rotation one-translation large-stroke small-thickness large-hollow parallel piezoelectric micro-motion platform. The two-rotation one-translation large-stroke small-thickness large-hollow parallel piezoelectric micro-motion platform includes a moving table movably arranged at the upper portion of a base in a gap mode, a first driving unit, a second driving unit, a third driving unit and a fourth driving unit distributed in rectangular shape in sequence are arranged at the base, the first driving unit, the second driving unit, the third driving unit and the fourthdriving unit are independently retracted and stretched and arranged on the moving table, a z axis perpendicular to the moving table is set, a y axis is from the second driving unit to the first driving unit, an x axis is from the second driving unit to the third driving unit, and the moving table can complete the lifting of up and down along the z axis, and can complete the x axis tilt rotation and y axis tilt rotation. The two-rotation one-translation large-stroke small-thickness large-hollow parallel piezoelectric micro-motion platform has the advantages that the structure is simple and compact, the displacement stroke is high, no displacement coupling is achieved, the moving table and the base have large hollow, and a displacement sensor is prone to integrating.

The invention discloses a two-rotation one-translation large-stroke non-coupling large hollow parallel piezoelectric micro-movement platform, which includes a moving platform for carrying objects. The gap between the moving platforms is provided with a base, and the base is provided with first drive units arranged in a rectangular order. , the second drive unit, the third drive unit and the fourth drive unit; the first drive unit, the second drive unit, the third drive unit and the fourth drive unit are independently retractable and arranged under the moving table, the first drive unit and the second drive unit The first displacement sensor facing the moving table is arranged between the two driving units, the second displacement sensor facing the moving table is arranged between the third driving unit and the fourth driving unit, and the distance between the first driving unit and the fourth driving unit is A third displacement sensor facing the moving table is arranged between them. The invention can complete the lifting and lowering of the movable table along the z-axis, and the tilting rotation along the x-axis and y-axis. The invention has the advantages of simple and compact structure, large working surface, no displacement coupling, high natural frequency and convenient integration of capacitive displacement sensors.

A microinjection mechanism based on the stick-slip driving principle comprises stacking piezoelectric ceramic, a fixing rod of the stacking piezoelectric ceramic, a microinjection device, a sliding block, an upper sliding platform, a lower sliding platform, a spring and a plurality of auxiliary fixing pieces; output displacement of the piezoelectric ceramic is transferred with the stick-slip driving principle, the precision of output displacement of the microinjection device can be guaranteed, and the larger displacement travel can be obtained. Meanwhile, when the microinjection device is driven with the stick-slip driving principle to operate cells, the certain displacement feed can be operated in multiple steps, so that the inertia force produced by each step of small displacement is smaller, and damage to the cells is smaller. Meanwhile, the microinjection mechanism is simple in structure and suitable for mass production.

The invention relates to a connecting rod transmission self-locking mechanism designed for solving the technical problems that existing similar products are difficultly applied to long connecting roddisplacement, mounting and production are inconvenient, and the linkage self-locking effect is poor. The two ends of a connecting rod bottom plate of the connecting rod transmission self-locking mechanism are connected with one end of a lower connecting rod and one end of an upper connecting rod through connecting rod pressing plates correspondingly, one ends of the upper connecting rod and lowerconnecting rod with the junctions stretching out of the connecting rod pressing plates are connected with a transmission assembly through tension springs correspondingly, and a square lock hole is formed in the center of a rotating shaft of the transmission assembly. According to the key points of the connecting rod transmission self-locking mechanism, lower connecting rod connecting pieces are arranged at a connecting lever on one side of the rotating shaft of the transmission assembly, one ends of the lower connecting rod connecting pieces are connected with the connecting lever of the rotating shaft, and the other ends of the lower connecting rod connecting pieces are connected with a tail end rivet of the lower connecting rod; and an edge lug is arranged on the other side, symmetricalto the connecting lever, of the rotating shaft, upper connecting rod connecting pieces are arranged at the edge lug of the rotating shaft, one ends of the upper connecting rod connecting pieces are connected with the edge lug of the rotating shaft, the other ends of the upper connecting rod connecting pieces are connected with a tail end rivet of the upper connecting rod, and fixing limiting pinsare fixed to the other ends of the tension springs of the transmission assembly.

A novel intelligent shock absorber integrating multilayer magnetorheological elastomers and magnetorheological dampers, including a magnetorheological damper, the magnetorheological damper includes a cylinder, and the cylinder is connected to the damper through a spring. The top of the shock absorber, the inside of the cylinder is provided with a piston disc, the lower side of the piston disc is fixedly connected with a piston rod, and the other end of the piston rod passes through the cylinder and is fixed at the bottom of the shock absorber. The side wall is also wound with magnetorheological damper excitation coil windings, and the inside of the cylinder is filled with magnetorheological fluid; A variable stiffness device composed of a magnetorheological elastomer excitation coil winding between the elastic bodies, the damping device and the variable stiffness device are connected in parallel or in series, and the shock absorber integrates the magnetorheological damper and the magnetorheological elastic The body has a large range of stiffness and damping, which can achieve better vibration reduction effect, and its structure is compact.

The invention discloses a one-translation two-rotation large-stroke coupling-free large hollow parallel piezoelectric micro-motion platform, which comprises a fixed platform; a movable platform is arranged above the fixed platform in a clearance mode, light holes are formed in the center of the fixed platform and the center of the movable platform; the fixed platform is provided with a first driving unit, a second driving unit, a third driving unit and a fourth driving unit, wherein the four driving units are respectively and sequentially propped against four orthogonal directions below the movable platform; the first driving unit, the second driving unit, the third driving unit and the fourth driving unit are the same in structure and comprise bases fixed to the fixed platform, lever assemblies connected to the bottom of the movable platform and the bases respectively and power devices applied to the lever assemblies; the four driving units are the same in structure, and each driving unit comprises a base, a first flexible part, a lever, a second flexible part and a power device. In the vertical thickness direction, the structural layout is compact, the displacement stroke of the platform is large, and meanwhile, the displacement transmitted by the first flexible piece type lever cannot generate coupling displacement.

The invention discloses an ultrasonic disk motor with a clutch and displacement amplification mechanism. The ultrasonic disk motor comprises a stator with a disk structure and a disk rotor, wherein the disk rotor is sleeved on the outer wall of the stator, and forms sliding fit with the stator. The ultrasonic disk motor is characterized in that: clutching piezoelectric strip grooves extended to the inner wall of the rotor are formed on the end face of one end of the stator; the sidewalls of the clutching piezoelectric strip grooves are communicated with rotating force arm grooves and spring grooves which are opposite to each other respectively; one side, away from the clutching piezoelectric strip groove, of each rotating force arm groove is communicated with a driving piezoelectric stripgroove; a clutching piezoelectric strip is arranged in the clutching piezoelectric strip groove; a rotating force arm is arranged in the rotating force arm groove; a spring is arranged in the spring groove; and a driving piezoelectric strip is arranged in the driving piezoelectric strip groove. The invention also discloses the ultrasonic disk motor with the clutch and displacement amplification mechanism and a working method thereof. The ultrasonic disk motor has strong thrust, high efficiency, low loss and long service life, and can be run at ultralow speed.

The invention discloses a two-translation one-rotation large-stroke coupling-free large hollow parallel piezoelectric micro-motion platform which comprises a movable table board, a fixed table body isarranged below the movable table board in a gap mode, a movable table body is arranged in the fixed table body in a gap mode, and a first screw is fixed between the movable table body and the movabletable board in a screwed mode. The movable table body comprises a first edge, a second edge, a third edge and a fourth edge which are sequentially and vertically arranged in the anti-clockwise direction of the movable table body. The fixed table body is provided with a first driving unit acting on the first edge in a telescopic mode, a second driving unit acting on the second edge in a telescopicmode, a third driving unit acting on the second edge in a telescopic mode, a first sensor assembly facing the third edge, a second sensor assembly facing the fourth edge and a third sensor assembly.And two translational motions and one rotation of the movable table board can be realized through the coordinated control of the voltage control of the first driving unit, the second driving unit andthe third driving unit. The integrated capacitive displacement sensor has the advantages of simple and compact structure, large working table surface, large stroke, no parasitic displacement, high inherent frequency and convenience in integration of the capacitive displacement sensor.

The invention provides a voice coil motor direct-driven long chute valve port water hydraulic throttle valve, comprising a voice coil motor, a throttle body, a left valve sleeve, a middle valve sleeve, a right valve sleeve, a valve core and a connection system; The voice coil motor includes a coil mover and a magnetic stator, the magnetic stator and the second connecting block are respectively fixedly installed on the left and right sides of the first connecting block, and the throttle body is fixedly installed on the second connecting block. The right side of the connection block, the third connection block is fixedly installed on the right side of the throttle body; the middle part of the throttle body is provided with a blind hole I; the left valve sleeve, the middle valve sleeve, the The right valve sleeve and the valve core are both arranged in the blind hole I; the left valve sleeve, the middle valve sleeve and the right valve sleeve are respectively sleeved on the outside of the valve core, and are connected with the blind hole I. Hole I is clearance fit; the middle part of the valve core is provided with a slot with an inclined plane. The technical problems such as the poor dynamic characteristics of the spool of the water hydraulic throttle valve and the small displacement stroke of the spool are solved.

The invention discloses a six-degree-of-freedom large-stroke non-coupling large hollow series-parallel piezoelectric micro-movement platform, including a base, a moving table, a second platform and a first platform; a first guiding unit, a second guiding unit, a third guiding unit, The fourth guide unit, the fifth guide unit and the sixth guide unit are respectively connected to the second platform and the first platform in sequence; the first guide unit is provided with a first drive unit, and the second guide unit is provided with a second drive unit, The third guide unit is provided with a third drive unit; the base is provided with a fourth drive unit, a fifth drive unit, a sixth drive unit and a seventh drive unit arranged in sequence in a rectangular shape and vertically telescopically acting on the second platform, The fifth driving unit is arranged under the second driving unit, and the sixth driving unit is arranged under the third driving unit. The invention has the advantages of simple and compact structure, large working table, large displacement stroke, no displacement coupling, high natural frequency and easy integration of displacement sensors.

The embodiment of the invention provides a bar arranging device and a reinforcing mesh machine. The bar arranging device comprises a fixing table, a discharging groove and a movable mechanism. The fixing table is used for fixing a plurality of bars arranged at intervals in the front-back direction. The blanking groove is formed above the fixed table, is positioned behind the plurality of bars and is used for bearing the bars to be arranged; the moving mechanism is provided with a first moving part capable of moving up and down and a second moving part capable of moving horizontally, the first moving part is used for moving upwards to a first position, and the first moving part in the first position bears a plurality of bars to be separated from the fixing table and bears the bars to be arranged to be separated from the discharging groove. The second moving part is used for carrying the multiple bars in the separated state and the to-be-arranged bars in the separated state to move by a preset value in the horizontal direction, the displacement stroke of the moving mechanism cannot be increased along with the increase of the width of the mesh, and therefore the manufacturing time of the mesh can be shortened; and the arrangement efficiency of the bar arrangement device is effectively improved.

The invention discloses a displacement amplification ultrasonic linear motor which mainly comprises a motor stator with a centre hole and a motor rotor penetrating in the center hole, wherein the motor stator mainly comprises a stator shell as well as a radial groove and an axial groove which are arranged on the stator shell; the radial groove and the axial groove are radially arranged and axially arranged along the center hole respectively; one end of the radial groove is communicated with the center hole; the left side or right side of the radial groove is provided with a spring groove communicated with the radial groove; the axial groove is positioned on the right side or left side of the radial groove and communicated with the radial groove; a radial piezoelectric strip is arranged in the radial groove; an axial piezoelectric strip is arranged in the axial groove; and a spring is arranged in the spring groove. The invention also discloses a working method of the displacement amplification ultrasonic linear motor. The displacement amplification ultrasonic linear motor disclosed by the invention has the advantages of large thrust, high efficiency, low loss, high speed and long service life.