54results about How to "Realize two-way movement" patented technology

The invention discloses a testing device and method for measuring the sandy soil moving states under different liquefaction degrees. The device comprises a model box, a working bench, a support, a speed regulating electromotor and a PIV (peak inverse voltage) platform, wherein the model box is internally provided with pulley blocks and steel wire ropes; the PIV platform is installed on one side out of a panel pasted with a transparent scale grid paper, and consists of two parts including a CCD (charged coupled device) digital camera and a camera support. A using method of the device comprises the following steps of: simulating liquefied sandy soil with different liquefaction degrees by adopting plastic sands with different gradations and a sodium chloride solution with specific density; dragging a carbon wire by the speed regulating electromotor; driving semi-spherical-body slide blocks to move horizontally by the pulley blocks; installing a pull force sensor at the vertical moving section; and measuring the moving state of plastic sand particles around during the moving process of the semi-spherical-body slide blocks by utilizing the PIV platform and the pull force sensor. The testing device and method for measuring the sandy soil moving states under different liquefaction degrees have the advantages that the liquefied sandy soil can be simulated under different pore pressure ratios according to actual requirements; the measurement accuracy is high; the operation is simple and feasible and the like.

The invention discloses an inchworm-type precise linear micro-actuator based on a complaint mechanism. The inchworm-type precise linear micro-actuator comprises driving mechanisms, two clamping mechanisms and stators, wherein each driving mechanism consists of four symmetrically arranged driving branch chains and one pair of stators, each driving branch chain consists of two lever structures, the driving branch chains are connected to the stators by adopting flexible hinges, and reciprocating micromovement can be performed relative to the stators; each clamping mechanism consists of three pairs of flexible hinges, one pair of levers and one pair of clamping pieces which are symmetrically arranged, and the two clamping mechanisms are symmetrically connected to two ends of each driving mechanism through the levers; the stators are of long and thin cylinder-shaped structures, are arranged at the symmetrical center of the micro-actuator, are matched with the clamping mechanisms through holes, are matched with the driving mechanisms through through grooves, and can move in the holes and the through grooves. The clamping mechanisms are driven by the driving mechanisms to carry out reciprocating motion, and the stators are driven by the clamping mechanisms to perform a bionic inchworm motion law in the motion manner of linear motion. The disclosed micro-actuator can be used in the fields of ultra-precision machining, precision engineering, micro electro mechanical systems, bioengineering, semiconductor manufacturing and the like.

The invention relates to the field of new energy sources, in particular to a novel photovoltaic power generation system with high power generation efficiency. The existing photovoltaic power generation solar panel has the two modes including a fixed mode and a tracking mode; for the fixed installation, the inclination angle of the solar panel is unchanged, and the power generation efficiency is low; when a tracking device is installed, the sun position can be tracked; more sun radiation can be received, but the structure of the tracking device is complicated, the initial investment and maintenance cost are too high, and the cost performance is not high, so that most photovoltaic power generation uses the fixed installation. Under the condition that the photoelectric conversion rate is difficult to improve in a short period, how to improve the solar power generation efficiency belongs to a technical problem urgently needing to be solved in photovoltaic power generation at present. The invention provides a technology for regulating the inclination angle of a photovoltaic assembly. The technology has low initial investment and low maintenance cost, and can replace a solar tracking device. Compared with photovoltaic power generation with the same installed capacity and unchanged inclination angle, the novel photovoltaic power generation system has the advantage that the photovoltaic power generation quantity is increased by about 40 percent.

The invention relates to a V-shaped and clamp-typed hydraulic walking car, pertaining to the vehicle parking and taking field in stereo garage. The invention comprises a walking part and a parking and taking part. The walking part is consists of four support wheels (2), a group of flexibly connected drive wheels (10) which provide direct drive to the walking car and a motor connected with the drive wheels; the parking and taking part comprises a car body I (1) and a car body II(9) which slides in the car walking direction on a guide rail (12) on the car body I(1). The car body I (1) and the car body II(9) are divided into an upper layer and a lower layer, wherein the lower layer is evenly provided with four V-shaped clamps (3). One side of the clamps (3) is the end for clamping vehicle wheels and the middle part of the other side is provided with a slide way; the end part of the clamps (3) is provided with a trolley (6). The two ends of a hydraulic cylinder (7) are articulated with two transverse pull rods (8) which are vertical to the hydraulic cylinder (7). The two ends of each transverse pull rod (8) are respectively connected with a sliding block (5). The invention is of simple structure and applicable for various stereo garages.

The invention provides a variable-rigidity soft driver and a hand rehabilitation training robot using the same. The driver comprises a layered driver body, a gas source and a control system, wherein the driver body is made of an elastic material; a double-helix fiber winding layer coats outside the driver body; a gas cavity is arranged in the driver body; a variable-rigidity layer is arranged at the middle position of the gas cavity and divides the gas cavity into an upper-layer chamber and a lower-layer chamber; the substrate of the variable-rigidity layer is made of a flexible material withhigh tensile modulus, has high strength and flexibility and can limit axial strain of the driver; a low-melting-point alloy is arranged in the snake-shaped flow channel in the variable-rigidity layer;an electrode is connected with the low-melting-point alloy; the gas source respectively communicates with the upper-layer chamber and the lower-layer chamber through gas pipelines; the control systemcomprises a controller and a rigidity control switch; the rigidity control switch is connected with a power supply device of the electrode; and the controller is simultaneously connected with a driver of the gas source and the rigidity control switch. The driver provided by the invention has large bending range, can meet the movement requirements of hand joints, and has high bearing capacity at the same time.

The invention discloses a test tube rack, a sample feeding mechanism and liquid analyzing equipment. The sample feeding mechanism comprises the test tube rack, a base and a power device, wherein the base is provided with a guide groove; the power device is arranged below the base; the power device corresponds to the guide groove; the test tube rack comprises a substrate and a rack body arranged on the substrate; the rack body is provided with a test tube groove; the test tube groove is used for placing a test tube; a transmission hole is formed in the bottom of the substrate; when the test tube rack is placed in the guide groove, the power device corresponds to the transmission hole; the power device drags the test tube rack to move through the transmission hole. With the adoption of the manner, the test tube rack can be moved frontwards or backwards.

The invention discloses an underwater butt connection device for submerged floating tunnels and application of the underwater butt connection device. The underwater butt connection device is characterized in that a cylindrical steel frame is arranged, and the rear half segment of the steel frame is arranged on an upper segment pipe in a sleeving and supported manner; surrounding steel rails and communicated axial steel rails are arranged at different axial positions on the inner side wall of the front half segment of the steel frame; a plurality telescopic mechanical arms are supported by the axial steel rails through rotatable rolling wheels and can move in the axial steel rails and the surrounding steel rails; a lower segment pipe is clamped through the telescopic mechanical arms arranged in pairs; the outer side wall of a butt joint pipe is provided with a temporary track in the axial direction; rollers are supported in the temporary track; and the butt joint pipe and the steel frame are coaxial and can move relatively in the axial direction. Accurate butt joint of the submerged floating tunnels is achieved in a semi-automatic manner.

This invention relates to a coupled 2-way linear supersonic motor of an energy converter and its excitation method, which includes four gatherings fixed on a base plate, a friction layer is adhered on the top of the them, the top of a vibrator of the converter is connected with the base plate, the bottom of a runner is contacted with the top surface of the friction layer, the top surface of the runner is contacted with a linear bearing and a spring loading device is loaded between the vibrator of the converter and a bracket, which utilizes the vertical vibration mode of two or more than two vibrators of a converter to let the gathering board couple bending vibration and the gatherings generate deflection of different directions by connecting screws and the base plate to determine positions of the gathering and vibrators to realize 2-way linear motion of supersonic motors.

The invention discloses an integrated displacement amplifying mechanism and a moving method thereof. The mechanism uses pulleys to form a U-shaped wire winding mode; and the displacement amplifying mechanism uses a memory deformation effect of SMA wires for converting a horizontal motion to a vertical motion, and realizes the displacement amplification. The moving method realizes a double-travel motion, and increases effective length of shape memory alloy wires in limited mechanism space, so that the deformation is increased, and the mechanism space is saved; an optimized implementation mode can realize an excellent temperature control effect of the shape memory alloy wires through a closed box body; the quick heating of the shape memory alloy wires can be realized through feeding a lot of hot air in a ventilation pipe at the top end of the box body or feeding a certain current in a SMA; and the SMA wires can be quickly cooled by feeding in low-temperature cold air, so that the mechanism acting speed is accelerated.

The invention discloses a two-way deformable shape memory alloy bump and a manufacturing method thereof. The bump consists of a shape memory alloy plate, a spring steel plate, a heating film and screws, and is applicable to adjustment of a flow field of an air intake duct of an engine. The molded surface of the bump is guaranteed by the shape memory alloy plate; the required molded surface is obtained by thermally forming the shape memory alloy plate by using a die; the molded shape memory alloy plate is subjected to cold and hot training, and finally the shape memory alloy plate is pressed to be a flat and straight state and assembled with the heating film and the spring steel plate, so that manufacturing of the shape memory alloy bump is completed. The bump disclosed by the invention has the advantages of high molded surface precision, quick response, high fatigue strength, simple structure, small occupied space and the like.

The invention relates to a magnetic navigation AGV (Automated Guided Vehicle) control system and method. Two driving wheels on the bottom surface of a vehicle body are fixed to the left side and the right side of the middle part respectively, and are called left driving wheel and right driving wheel; four universal wheels are fixed to four corners; an RFID (Radio Frequency Identification Device) sensor is fixed to the center; two magnetic sensors are fixed in front of and behind the RFID sensor respectively; a driving system and a control unit are fixed in the vehicle body; the driving system comprises a motor driver and a motor; an ultrasonic sensor is arranged at the front end of the vehicle body; in a circuit connection, the ultrasonic sensor, the magnetic sensors and the RFID sensor are connected with the control unit in a one-way form through an RS232 serial port; the control unit is connected with the motor driver in a one-way form through a 485 bus; the motor driver is connected with the motor in a one-way form to control the left driving wheel and the right driving wheel to run. The magnetic navigation AGV control system has the technical effects of stable and reliable data transmission, high efficiency, capability of realizing bidirectional movement and reversing of the AGV vehicle body, easiness and convenience in magnetic bar guide line pavement, and easiness in route change.

The invention relates to a profile motion platform given based on ocean temperature difference energy and capable of achieving depth setting control, and belongs to the technical field of ocean equipment. The platform comprises a buoyancy control loop, a hydraulic motor, a generator and a control unit. The buoyancy control loop comprises a liquid storage pump, an energy storage device, an outer liquid storage device and an inner liquid storage device, which are sequentially connected into a loop structure through oil lines. A first conduction control valve, a hydraulic motor and a first one-way valve are sequentially connected in series between the energy storage device and the outer liquid storage device; a second conduction control valve is connected in series between the outer liquid storage device and the inner liquid storage device; a short-circuit oil circuit communicated with the inner liquid storage device is connected between the first conduction control valve and the hydraulic motor in a bypass mode; and a second one-way valve is connected to the short-circuit oil circuit in series. The hydraulic motor forms a hydraulic pump based on the rotation of the generator, so thatthe hydraulic pump is sequentially connected with the first one-way valve, the outer liquid storage device, the second conduction control valve, the inner liquid storage device and the second one-wayvalve in series to form a set-depth regulation and control loop system. The platform integrates power generation and depth setting control functions and can be widely applied to the field of ocean exploration.

The invention relates to a profile motion platform driven based on ocean temperature difference energy and a power generation control method thereof, and belongs to the technical field of ocean equipment. The profile motion platform comprises a sealed cavity and a buoyancy control loop. The buoyancy control loop comprises a liquid storage pump, an energy storage device, an outer liquid storage device with discharge volume changing with storage quality of hydraulic oil, and an inner liquid storage device, wherein the liquid storage pump, the energy storage device, the outer liquid storage device and the inner liquid storage device are sequentially connected through oil lines to form a loop structure. A hydraulic motor for power generation, a first conduction control valve and a one-way valve only allowing the hydraulic oil to flow to the outer liquid storage device are sequentially connected to a pipeline located between the energy storage device and the outer liquid storage device in series. A short-circuit oil circuit is connected between a pipeline between the hydraulic motor and the first conduction control valve and the inner liquid storage device through a tee joint in a bypass mode; and a second conduction control valve is connected to the short-circuit oil circuit in series. Based on the added short-circuit oil circuit, the profile motion platform can generate power formultiple times in a profile cyclic motion process, so that the power generation efficiency is improved, and the profile motion platform can be widely applied to the field of ocean exploration.

The invention discloses an electromagnetic shock absorber with an asymmetric damping characteristic and an asymmetric characteristic design method, and belongs to the technical field of vehicle engineering. The shock absorber is composed of a gear rack mechanism, a coupler, a gearbox, a motor, a load circuit and a case. The structure is novel, and bidirectional movement of a rack and unidirectional rotation of an output shaft are realized through the gear rack mechanism comprising double overrun clutches and four gears. Through meshing transmission with the transmission ratio not equal to 1 of the two gears, the motion characteristic that the output shaft rotates unidirectionally and changes the rotating speed during bidirectional constant-speed motion input of the rack is achieved, and the asymmetric damping characteristic and the power generation characteristic of the electromagnetic shock absorber are achieved. The quantitative relation between the asymmetric coefficient of the induced electromotive force, the asymmetric coefficient of the electromagnetic damping force and the asymmetric coefficient of the equivalent damping coefficient of the electromagnetic shock absorber and the structural transmission parameters is defined, and according to the quantitative relation and the asymmetric coefficient of the electromagnetic damping force or the asymmetric coefficient of the induced electromotive force in a design target, the electromagnetic shock absorber meeting the requirements can be rapidly designed.

The invention discloses a bidirectional step-by-step telescopic electric cylinder and a tyre crane. The telescopic electric cylinder comprises a motor, a speed reducer, a gearbox assembly, a first-stage lead screw, a left telescopic cylinder assembly, a right telescopic cylinder assembly and a connecting fish lug, wherein the speed reducer is rotationally connected with the output end of the motor; the gearbox assembly comprises a gear box and a transmission gear set, the transmission gear set is rotationally arranged in the gear box, and the transmission gear set is fixedly connected with thespeed reducer; the first-stage lead screw is divided into a first-stage lead screw left-hand end, an optical axis and a first-stage lead screw right-hand end, the optical axis is located in the gearbox and is fixedly connected with the transmission gear set, the screw-in direction of the first-stage lead screw left-hand screw end and the first-stage lead screw right-hand end are opposite in rotation direction; the left telescopic cylinder assembly is rotationally arranged on the first-stage lead screw left-hand end; the right telescopic cylinder assembly are arranged on the first-stage leadscrew right-hand end of the in a rotating mode; the connecting fish lug is fixedly arranged at the end of the left telescopic cylinder assembly and the end of the right telescopic cylinder assembly; and the left telescopic cylinder assembly and the right telescopic cylinder assembly are in mirror symmetry and are of a multi-layer concentric nested structure. The electric cylinder can stretch and contract in a bidirectional mode.

An oil pump and oil cylinder integrated device driven by an alternating current servo motor comprises a hydraulic cylinder barrel. The middle portion of the hydraulic cylinder barrel is provided witha piston ring. The interior of the piston ring is connected with a bi-directional duplex inside engaged gear motor pump. Two output ends of the bi-directional duplex inside engaged gear motor pump areconnected with a first piston rod and a second piston rod correspondingly. The first piston rod and the second piston rod are connected with the piston ring. The first piston rod, the second piston rod and the piston ring communicate with one another through an oil path. The piston ring moves on the inner wall of the cylinder barrel after being sealed through a combined seal ring and guided by aguide belt. According to the oil pump and oil cylinder integrated device driven by the alternating current servo motor, the alternating current servo motor, the inside engaged gear pump and an air oilcylinder are integrated to achieve hydraulic output, the integrated structure is compact, the integration level is high, control is easy, and the efficiency is improved.

An alternate self-locked climbing piezoelectric actuator is characterized in that it comprises a slide bar, an upper mover, a lower mover, a piezoelectric ceramic, and a pressure plate; the piezoelectric ceramic drives the upper mover and the lower mover to alternately motion; the upper mover and the lower mover move along the slide bar; the pressure plate and a pre-fixation system provide pre-fixation for the lower mover; a base (1) is fixedly connected with the slide bar (2); the upper mover (5) and the lower mover (4) sleeve the slide bar (2); the two arc surfaces of the inner holes of theupper mover (5) and the lower mover (4) are in contact with the slide bar (2) and can move relative to each other; the upper mover (5) is pivotally mounted on an upper rotating shaft (17); the lower mover (4) is pivotally mounted on a lower rotating shaft (18); the upper rotating shaft (17) and the lower rotating shaft (18) are fixed to the upper and lower ends of the piezoelectric ceramic (7); and the piezoelectric ceramic (7) is connected to a piezoelectric ceramic pre-tightening nut (8) by a piezoelectric ceramic pre-tightening bolt (9). The alternate self-locked climbing piezoelectric actuator has the advantages of large thrust, low processing precision requirement, two-way motion, and good application prospect.

A transducer coupling two-way linear ultrasonic motor and an excitation method thereof relate to an ultrasonic motor and an excitation method thereof. For bending type, ∏ type and longitudinal bending compound linear ultrasonic motor, there are problems of small amplitude, small driving force, small output power, and single excitation method. There are four shifting teeth (11-2) of the present invention and they are respectively fixed on the substrate (11-1). The upper end surface of the shifting teeth (11-2) is pasted with a friction layer (11-3), and the transducer vibrator ( 12) is connected to the base plate (11-1), the lower end surface of the mover (1) is in contact with the upper end surface of the friction layer (11-3), and the upper end surface of the mover (1) is in contact with the linear bearing (2). contact, an elastic loading device (5) is installed between the transducer vibrator (12) and the bracket (3). The present invention utilizes the longitudinal vibration mode of two or more transducer vibrators, and is connected to the substrate through screws, so that the shifting tooth plate is coupled with bending vibration, so that the shifting teeth are deflected in different directions. By determining the position of the shifting teeth and the energy conversion The position of the vibrator is determined, and the corresponding excitation method is used to realize the two-way linear motion of the ultrasonic motor.

The invention provides a composite carbon fiber oil cylinder with oil on an inner hole of a piston rod, belongs to the technical field of hydraulic cylinders, and aims to provide a carbon fiber oil cylinder which meets the design requirement on inner bore precision, geometric tolerance and degree of finish of a cylinder barrel and works stably under high pressure. According to the technical scheme, the cylinder barrel is formed by winding composite carbon fibers and nano materials; threads which are formed by winding composite carbon fibers and nano materials are respectively arranged at two ends of a cylinder cover; threads are also arranged at connecting ends of a cylinder bottom, the cylinder cover and the cylinder barrel; the piston rod of the piston rod assembly is a hollow tube; an oil cylinder reverse cavity inlet allowing the piston rod to withdraw is formed in one end, which is close to the cylinder bottom, of the piston rod; and an oil cylinder forward cavity inlet allowing the piston rod to extend out is formed in the other end, which is close to the cylinder cover, of the piston rod. The invention is applied to the carbon fiber hydraulic cylinder.

The invention discloses a centrifugal casting mold with an inner convex casting and capable of realizing bidirectional movement. The centrifugal casting mold comprises a bottom plate, a mold body anda transmission mechanism installed below the mold body, wherein a driving device is fixedly installed on the upper surface of the bottom plate, a spraying device is installed on the side, away from the driving device, of the upper surface of the bottom plate, sliding rails are symmetrically and fixedly connected to the upper surface of the bottom plate, sliding seats are slidably connected to thetops of the sliding rails, a supporting plate is fixedly connected to the tops of the two sliding seats, the transmission mechanism is fixedly connected to the top of the supporting plate, the mold body is mounted at the movable end of the transmission mechanism in a matched mode, a first through hole is formed in one side of the mold body, a second through hole is formed in the end, away from thefirst through hole, of the mold body, an annular groove is formed in the middle of the inner wall of the mold body. By operating the driving device, bidirectional movement of the casting mold can beachieved, automatic spraying of the casting mold can be achieved, and the centrifugal casting mold is higher in efficiency and safer.

The invention provides a composite carbon fiber oil cylinder capable of realizing oil supply by a cylinder bottom and a cylinder cover, belongs to the technical field of hydraulic cylinders, and aims to provide a carbon fiber oil cylinder which meets the design requirement on inner bore precision, geometric tolerance and degree of finish of a cylinder barrel and works stably under high pressure. According to the technical scheme, the cylinder barrel is formed by winding composite carbon fibers and nano materials, threads which are formed by winding the composite carbon fibers and the nano materials are respectively arranged at two ends of the cylinder cover, and threads are also machined at connecting ends of the cylinder bottom, the cylinder cover and the cylinder barrel; an oil cylinder reverse cavity inlet is formed in the cylinder cover, and an oil cylinder forward cavity inlet is formed in the cylinder bottom; and the invention is applied to the carbon fiber oil cylinder.

The invention discloses an inchworm type inching walking robot, which consists of two clamping units and one driving unit. The driving unit consists of two symmetrically arranged driving branches andtwo pairs of right angle flexible hinges, and the driving branches consist of two lever structures; the driving unit is connected with the two clamping units by bolts, and the driving unit can performreciprocating micro-displacement movement relative to the clamping units; each clamping unit consists of two symmetrically arranged driving branches, two pairs of right angle flexible hinges and a bottom plate; and the two clamping units are symmetrically connected to both ends of the driving unit through bolt holes. Adopt a form of movement of driving one end of one clamping unit and fixing a base of the clamping unit, and carrying out elongation of a driving structure to drive the other clamping unit to move linearly to simulate motion law of the inchworm. Three piezoelectric stacks are adopted, clamping is realized by utilizing the friction effect between the clamping units and the ground, and an piezoelectric stack action displacement can be converted into an effective driving displacement.

The invention provides a crawling robot for detecting aero-engine blades, in the crawling robot for detecting the aero-engine blades, four three-degree-of-freedom multi-posture conversion bionic single-leg modules are symmetrically installed on the machine body, force sensors for collecting acting force data are arranged on foot soles, and a third steering engine rotates to drive the foot soles and shank supports to rotate; a tail motor and a head motor are respectively mounted on the machine body and are symmetrically arranged relative to the machine body; the tail motor and the head motor respectively drive a first inertia counterweight rotor and a second inertia counterweight rotor to maintain movement balance; a control panel is connected with the force sensors, a first steering engine, a second steering engine, the third steering engine, the tail motor and the head motor, and responds to acting force data, and the control panel sends instructions to the first steering engine, the second steering engine, the third steering engine, the tail motor and the head motor so as to control the bidirectional movement track and balance of the crawling robot.

The invention provides a composite carbon fiber oil cylinder, belongs to the technical field of hydraulic cylinders, and aims to provide a carbon fiber oil cylinder which meets the design requirement on inner bore precision, geometric tolerance and degree of finish of a cylinder barrel and works stably under high pressure. According to the technical scheme, the cylinder barrel is formed by winding composite carbon fibers and nano materials; threads which are formed by winding composite carbon fibers and nano materials are respectively arranged at two ends of a cylinder cover; threads are also machined at connecting ends of a cylinder bottom, the cylinder cover and the cylinder barrel; a piston rod of a piston rod assembly is a hollow tube; an oil cylinder reverse cavity inlet is formed in the piston rod; and an oil cylinder forward cavity inlet is formed in the cylinder bottom. The invention is applied to the carbon fiber oil cylinder.

The invention provides a variable stiffness soft driver and a hand rehabilitation training robot using the driver, wherein the driver includes: a layered driver body, the driver body is made of elastic material, and the driver is covered with a double helical fiber winding layer , the driver body is provided with an air chamber; a variable stiffness layer is arranged in the middle of the air cavity to separate the air cavity into an upper chamber and a lower chamber, and the base of the variable stiffness layer is made of flexible Made of material with high strength and flexibility, which can limit the axial strain of the driver; a low melting point alloy is arranged in the serpentine flow channel inside the variable stiffness layer, and an electrode is connected to the low melting point alloy; The gas source communicates with the upper chamber and the lower chamber respectively through gas pipelines; the control system includes a controller and a stiffness control switch, the stiffness control switch is connected to the power supply device of the electrode, and the controller is simultaneously connected with the driver of the gas source and the Stiffness control switch connection. The driver in the present invention has a large bending range, can meet the activity requirements of the hand joints and has a strong bearing capacity at the same time.

The invention relates to an inertial impact linear piezoelectric motor based on a cantilever beam structure, and belongs to the technical field of precision driving and positioning. It includes a base, a vertical rod, a piezoelectric stack, a guide rod and a moving slider; the lower part of the outer end of the horizontal block of the base is connected to the lower end of the vertical rod through a flexible hinge, and the upper part of the vertical rod is fixedly connected to one end of the guide rod. The other end of the rod is in the shape of a cantilever, and the moving slider is slidably fitted on the guide rod; the piezoelectric stack is located parallel to the top of the horizontal block of the base, and is fixedly connected between the middle of the vertical rod and the vertical block of the base; When working, the piezoelectric stack is not energized at the initial length; the piezoelectric stack is energized under the action of the positive sawtooth frequency voltage, which drives the upper part of the vertical rod to swing, and drives the moving slider to move along the guide rod by static friction; When the electric stack recovers to the initial length, the moving slider completes a step ΔH movement, and a positive periodic motion is completed at this time; under the action of the reverse sawtooth frequency voltage, the moving slider realizes the reverse movement.

The present invention discloses a climbing rod actuator in an isosceles trapezoidal arrangement using alternating self-locking, and is characterized in that: a base is fixedly connected with a slidingrod, an upper rotor and a lower rotor are sleeved on the sliding rod, two arc surfaces of the upper rotor and the lower rotor inner holes are respectively in contact with the sliding rod, hinges of the upper rotor and the lower rotor coordinate with rotating shafts of an upper rotating shaft and a lower rotating shaft, and the upper rotor and the lower rotor are connected through the two sets ofrotating shafts, left oblique driving legs, right oblique driving legs, piezoelectric ceramic pre-tightening bolts and piezoelectric ceramic pre-tightening nuts, a upper pressing plate and a lower pressing plate are fixed through the upper rotor and the lower rotor through screws, pressure rollers and the pressure plates are connected through pin shafts, and outer edge of the pressure roller is elastic rubber, and the pressure rollers are suitable in size therefore can have a certain contact pressure with the sliding rod. The climbing rod actuator only needs to arrange the driving legs withinthe self-locking zone of the rotors, to realise alternating self-locking, therefore has low processing requirements. The climbing rod actuator is expected to achieve large pushing force, theoretically, as long as strength is sufficient, the piezoelectric actuator can have same amount of force with amount of force of the driving legs. Although self-locking is utilized, the actuator can achieve two-way motion.

The invention discloses a hydraulic sliding table brake device for a vehicle sliding table test. The hydraulic sliding table brake device comprises a hydraulic cylinder and at least two piston parts, wherein the hydraulic cylinder is cuboid-shaped and comprises a top plate, a bottom plate, a front side plate, a rear side plate, a left side plate, a right side plate, a first sub-partition and a second sub-partition; the first sub-partition and the second sub-partition are connected in a cross shape; the hydraulic cylinder is equally divided into a plurality of piston cavities; the piston cavities are grouped in pairs; each group of piston cavities includes two piston cavities arranged in a length extending direction of the left side plate; at least one piston part is mounted in the group of piston cavities; an oil inlet is formed in the top plate; through holes in one-to-one correspondence with the piston parts are formed in the first sub-partition at intervals; each piston part comprises two pistons and a piston rod for connecting the pistons, the piston rod penetrates through the corresponding through hole in the first sub-partition, and the pistons are positioned in the piston cavities in the group of piston cavities and can penetrate through the front side plate and the rear side plate respectively. The hydraulic sliding table brake device can bidirectionally move and is high in response speed.

The invention discloses a bionic bending driver and rehabilitation gloves, and the driver comprises a corrugated pipe which comprises a corrugated communicating cavity, and the corrugated pipe is fixed on fiber cloth; protruding ports are formed in the front end and the rear end of the corrugated pipe, the front end and the rear end of the corrugated pipe are connected with the front end fixing buckle and the tail end fixing buckle through the ports respectively, the front end fixing buckle and the tail end fixing buckle are fixed to the fiber cloth, and relative fixing of the corrugated pipe, the front end fixing buckle and the tail end fixing buckle is achieved. The tail end of the corrugated pipe is connected with an air pipe, the air pipe and the tail end of the corrugated pipe are crosslinked through glue, the overall air tightness is guaranteed, a middle pipe is arranged in a corrugated communicating cavity of the corrugated pipe and between every two sections of corrugations, the peripheries of the middle pipes are sleeved with middle fixing buckles, and the middle fixing buckles are fixed to the fiber cloth. According to the invention, the integral rigidity and the local rigidity of the driver are controlled by controlling the proportional relation and the position interval of the number of the middle fixing buckles and the number of the corrugated pipe joints, and the driver is suitable for more working conditions.