7013 results about "Servo" patented technology

The invention discloses a biped robot capable of walking rapidly. The biped robot is composed of a servo motor, a motor support, a driving bevel gear, driven bevel gears, check pawls, ratchet wheel cam sets, ratchet wheel connecting pins, a driving pawl, oscillating bars, roller connecting pins, rollers, shanks, compression springs, screws, thighs and feet. The servo motor drives the driving bevel gear to rotate so as to drive the symmetrically-arranged driven bevel gears to rotate oppositely and the thighs to swing forwards and backwards; the shanks always make contact with cams in the ratchet wheel cam sets through the compression springs and supporting legs are longer than swinging legs through telescopic motion of the shanks. Compared with the prior art, the biped robot has the advantages that the robot can be driven by one servo motor, so that the robot is convenient to control and high in control accuracy; except for the servo motor, other structures of the robot are all mechanical structures, so that motion cooperation is convenient; the structure is simple, machining and installation are convenient, and the robot can walk rapidly.

The invention discloses a servo motor control system of an all-electric injection molding machine, comprising an injection molding machine computer controller, a servo motor controller and a PLC controller; the computer controller is connected with the servo motor controller through a CAN bus, the servo motor controller is connected with a servo motor, and the computer controller is connected with PLC controller; the servo motor controller can be a mould opening/closing servo motor controller, a plastic injection servo motor controller, a plasticizing pressure holding servo motor controller and an ejection servo motor controller; and the servo motor can be a mould opening/closing servo motor, a plastic injection servo motor, a plasticizing pressure holding servo motor and an ejection servo motor. The invention also discloses a control method for the control system; and technological procedures capable of being performed simultaneously are synchronously controlled through performing mould opening/closing control, plasticizing control, plastic injection control, pressure holding control, ejection control, mobile control of an injection platform and mould adjustment control on the motor of the electric injection molding machine, thereby saving one third of the production time.

The invention relates to a cross-scale micro nanometer grade in-situ composite load mechanical property testing platform, belonging to electromechanics. The cross-scale micro nanometer grade in-situ composite load mechanical property testing platform is composed of a precision drive and transmission unit, a signal detection and control unit and a clamping, connecting and supporting unit, wherein,in the precision drive and transmission unit, a DC servo motor provides power output, and a two-stage worm and gear mechanism with large reduction ratio and a precision ball screw mechanism transmit power; the signal detection and control unit is composed of a precision displacement sensor, a precision pull pressure sensor and a coder in coaxial rigid connection with the DC servo motor; and the clamping, connecting and supporting unit comprises a clamper component for locating and mounting a standard test specimen, and the like. The cross-scale micro nanometer grade in-situ composite load mechanical property testing platform can be compatible with imaging instruments, and performs a cross-scale in-situ micro nanometer composite load test on a macroscopic test specimen through observation via the imaging instruments, so as to perform in-situ monitoring on processes of microscopic deformation, injury and fracture of materials, so that a new testing method for revealing the mechanical properties and the injury mechanism of the materials at the micro nanometer grade is provided.

A bi-modal bleed valve assembly is provided. In one embodiment, the bi-modal bleed valve assembly includes a housing assembly having a bleed inlet, a bleed outlet, a control servo port, and a control chamber therein. A main flow control valve is fluidly coupled to the control chamber and configured to move between an open position and a closed position to regulate fluid flow from the bleed inlet to the bleed outlet. The main flow control valve is configured to move from an open position to a closed position when the pressure within the control chamber surpasses a predetermined threshold. A switching valve is fluidly coupled between the bleed inlet, the servo control port, and the control chamber. The switching valve is configured to route fluid flow into the control chamber from: (i) the bleed inlet in an autonomous mode, and (ii) the servo control port in a servo-controlled mode.

The invention provides an automatic loading robot for packing boxes. The automatic loading robot comprises a PLC automatic control system, a packing stacking trolley and a transportation line, wherein the packing stacking trolley comprises a portal frame; a travelling device is arranged at the lower end of the portal frame; the front ends at the two sides of the portal frame are fixedly connected with a large Z axis; the large Z axis is connected with the X axis; the front end of the X axis is equipped with a small Z axis; a lifting device is arranged on the large Z axis; an X-axis servo motor is mounted on the X axis through a gear rack; the small Z axis is connected with a box drawing platform through a slide block and a guide rail brake; a box pushing device is arranged on the box drawing platform; a distributing device is arranged at the front end of the travelling device; and a reversing device and a normalizing device are arranged on the transportation line. The automatic loading robot can extend into a car to complete automatic stacking, and packing boxes do not need to be arranged into rows in advance, so that space is reduced, and loading stacking efficiency is improved; and a mechanical hand adopts a box pushing mode for the packing boxes, is free of damages on the packing boxes, can be operated in the car, and is limited by the car.

The invention relates to a rotational inertia on-line identification method for an alternating current (AC) permanent magnet synchronous motor servo system and belongs to the technical field of rotational inertia identification for motors. The method aims to solve the problems that an on-line inertia identification method based on the traditional least square method is high in requirements for storage space and arithmetic speed of digital processing chips. The method adopts a load torque identification part to identify a constant load disturbance torque value TL; a system dynamic state judging part is adopted for judging whether rotation speed of a motor is at a dynamic change stage, and when the rotation speed of the motor is at the dynamic change stage and the rate of change of the rotation speed of the motor is higher than a critical change rate for identification of rotational inertia of the motor, a rotational inertia estimation value is obtained through calculation by utilization of a least square estimation method based on recursion; and when the rotational inertia on-line identification process meets requirements of a preset output rotational inertia estimation value and meets a requirement for precision, the rotational inertia estimation value is output and the rotational inertia on-line identification process is completed. The method is used for rotational inertia on-line identification for the motor servo system.

The invention relates to a folding wings pneumatic loading unfolding experiment device consisting of two force-augmentation devices, a servo arm swing mechanism and a rack. The force-augmentation device comprises a gas source, a pressure-reducing valve, a cylinder, a force sensor and a digital dynamometer, wherein the gas source transmits gas to the cylinder through pressure adjustment of the pressure-reducing valve, the force sensor and the digital dynamometer can accurately measure augmented force. The servo arm swing mechanism includes a thrust bearing support, and two radial bearings positioned rotating shafts and rotating arms on up and down portions. One end of a steel cable is connected to ring-pull screws of a sensor, and the other end of the steel cable winding on a front roller seat, a back roller seat and a roller on a tumbler is connected to force-bearing points of the folding wings. The folding wings pneumatic loading unfolding experiment device has a simple structure, a big adjustment range for the augmented force, a convenient and easy operation method, and high test efficiency. In the unfolding process of the folding wings, the servo arm swing mechanism can rotate around the folding wings to ensure the augmented force to always be perpendicular to the folding wings, which is particularly suitable for small and medium sized folding wings loading unfolding experiments.

The invention relates to a spreader anti-sway controlling method of an overhead traveling crane. The spreader has 5 measuring parameters: a trolley position of a supporting spreader, a spreader cable length, a spreader cable swing angle, a trolley speed, and a spreader elevation speed. The 5 measuring parameters are respectively measured by 2 absolute encoders, a video camera system, and an incremental encoder. The trolley speed and the spreader elevation speed serve as input signals and act upon an AC servo motor driven by the trolley and the spreader through a frequency converter, such that the entire spreader system can work harmonically. A controlling strategy and the treatment upon the collected signals are realized by a whole PLC processor. A controlling method and a controlling strategy are provided. With the video camera system, through spreader real-time monitoring, spreader swing angle which is the position and the cable length are obtained. Trolley position information and cable length information are obtained by using the encoders. The signals are read by using the absolute encoders. Feedback signals are acquired by the incremental encoder. The controlling method provide by the invention has the advantages of higher controlling precision and higher data processing speed.

The invention discloses a monitoring system and method for barn storage amount. The system comprises a collecting system, a control treatment unit, monitoring client sides and a remote monitoring center. According to the system, a high-precision servo rotary table is used for driving a laser ranger, so that range information of all detection points of a barn is collected to form a point cloud matrix; the control treatment unit achieves size calculation and state recognition through the digital signal processing technology; each barn monitoring client side is used for monitoring one barn and storing data; the data are finally transmitted to the remote monitoring center through a transmission system, so that the conditions of all barns are collected, displayed and controlled. By means of the system, the sizes of large grain piles in irregular shapes can be quickly and effectively measured with high precision, the states of pits can be judged, and remote monitoring can be achieved; the monitoring method is low in cost, easy to implement and capable of obtaining accurate data.

The invention discloses a motor position servo system self-adaptive control method based on an interference observer. The motor position servo system self-adaptive control method based on an interference observer includes the steps: establishing a mathematical model for a motor position servo system; constructing an interference observer and a self-adaptive controller based on the interference observer; and by means of a Liapunov stability theory, performing stability demonstration on the motor position servo system, and obtaining a global asymptotic stability result of the system by operatinga Barbalat lemma. The motor position servo system self-adaptive control method based on an interference observer is based on an integration series model and the interference observer of the motor position servo system, designs a non-linear control method based on the interference observer, integrates the non-linear control method with self-adaptive control, respectively estimates unmodeled interference and parameter nondeterminacy to enable the servo system to achieve the effect of global asymptotic stability when unmodeled interference is time-varying interference for the servo system, and solves the strong parameter nondeterminacy problem and the strong nondeterminacy non-linear problem of the system so as to enable the system to obtain better tracking performance.

The invention discloses a rapid self-centering clamping device for a large-sized bearing ring workpiece. The rapid self-centering clamping device for the large-sized bearing ring workpiece comprises an underframe, a support table, a centering mechanism, a positioning and clamping mechanism and a pressing mechanism. According to the rapid self-centering clamping device for the large-sized bearing ring workpiece provided by the invention, through the centering mechanism, the bearing ring workpiece can be quickly centered and preliminarily clamped; six positioning claws of the positioning and clamping mechanism are uniformly clamped in six directions of the workpiece, and the workpiece is uniformly stressed by adopting a synchronous coaction and single-step fine adjustment manner, so that theworkpiece is positioned and clamped in the horizontal direction; through three pressing clamping jaws of the pressing mechanism, the workpiece is finally pressed and fixed in the perpendicular direction; through the actions from the centering mechanism to the positioning and clamping mechanism and then to the pressing mechanism, the accurate position of the workpiece during processing can be effectively ensured; through the application of the servo motor, the clamping precision is remarkably improved; and in addition, the rapid self-centering clamping device for the large-sized bearing ring workpiece provided by the invention is compact in overall structure, convenient to install, stable and reliable in performance, high in repeated positioning accuracy, and capable of greatly reducing the labor intensity of operating workers and improving the working efficiency.

The invention relates to a multilevel static-dynamic coupling mechanical loading device for a high-frequency fatigue test, and belongs to the fields of scientific instruments and mechanical property tests of materials. The device comprises a high-frequency fatigue loading unit, a low-frequency fatigue loading unit, a tensile loading and detection unit and a synchronous rotating unit. The device realizes tensile fatigue loading through a servo motor, a piezoelectric stack and an ultrasonic vibrator assembly, and simultaneously realizes detection of load and displacement through a mechanical sensor and an optical fiber displacement sensor. The motor drives a rotating mechanism by a motor to realize real-time dynamic crystal diffraction characterization performed on a sample by a synchronous radiation light source. Moreover, a dual-V gap feature defect sample can realize a composite load test mode of tensile-sheering or tensile-bending and the like close to the actual stress form of a material. The multilevel static-dynamic coupling mechanical loading device provided by the invention is compact in structure, and can integrate multiple test methods, thereby providing an effective test tool for the high-frequency fatigue test of the material.

The invention discloses packing machines, particularly to a full-automatic mesh bag packing machine for fruit packing operations. A horizontal conveying device is arranged on a belt conveyor, an ascending cylinder is disposed below the tail end of the belt conveyor, a control box is arranged on one side of the ascending cylinder, a rotating spindle is arranged in the middle of the upper portion of the rack, an anti-winding reel and a rotary table are arranged on the upper portion of the rotating spindle, a striking wheel and a striking wheel spring reset device are arranged above two ends of the rotary table, three-jaw fixtures are arranged below two ends of the rotary table, a mesh drum is arranged below each three-jaw fixture, a double-row binding machine is arranged between the three-jaw fixture and the mesh drum at the left end, and a servo motor is connected with one side of the bottom of the rotating spindle. The full-automatic mesh bag packing machine is compact in structure, convenient to operate and provided with a full-automatic programmable logic controller (PLC) computer control system. As a novel automatic device for packing the mesh bags for fruits, the device is high in speed, safe and high in efficiency.

The invention discloses a servo assembly for an aerial camera stability-increasing cradle head and the stability-increasing cradle head with the same. A rotor iron core, a magnet ring, a stator iron core, a power transfer board, bearings and a hollow rotating shaft are sequentially installed in a machine shell, a flexible flat cable A penetrates through the rotor iron core, the magnet ring, the stator iron core and the hollow rotating shaft to be connected with the power transfer board and connected with a flexible flat cable C outside the machine shell, a three-phase winding wire of a motor is connected with a flexible flat cable B through the power transfer board, the flexible flat cable B is connected with a magnetic grain and connected to an electron speed regulator module through a terminal, and the electron speed regulator module is connected with the flexible flat cable C. According to the servo assembly for the aerial camera stability-increasing cradle head and the stability-increasing cradle head with the same, assembly, maintenance and debugging are convenient, the electron speed regulator module, the magnetic grain and the servo motor are integrated into a whole, under the protection of the machine shell and the hollow shaft of the motor, the problems that the servo module is damaged and the cable is broken due to the fact that the cradle head is impacted are avoided, and the reliability of cradle head products is greatly improved.

The invention relates to a compound type numerically-controlled machine tool. The compound type numerically-controlled machine tool mainly comprises a machine tool base, an X-axis platform, a Y-axis platform and a Z-axis platform, wherein a drilling mechanism, a typing mechanism and a cutting mechanism are arranged on the Z-axis platform; the drilling mechanism comprises a motor base which is arranged on the X-axis platform, a main shaft motor which is arranged on the motor base, a drilling main shaft which is driven by the main shaft motor, and a cutting tool which is arranged on the drilling main shaft; the typing mechanism and a cutting platform are arranged on a mounting base plate; the cutting mechanism comprises a screw rod, a cutting linear guide rail which is matched with the screw rod, and a servo motor which drives the screw rod to work; a cutting head is arranged on the screw rod and achieves high-speed cutting action under the driving of the screw rod; and the typing mechanism comprises a cylinder and a pneumatic typing head which is arranged on a linear guide rail, and the typing mechanism performs typing action through the cooperation of the cylinder and a typing linear guide rail. The compound type numerically-controlled machine tool can realize a plurality of functions, so that the used amount of machine tools is reduced, only a small amount of work places are needed, the cost and the processing time are reduced, and generated smog can be removed.

The invention relates to a servo mechanical press which comprises a stand shaped like a frame, and is characterized by further comprising a first synchronous servomotor, a second synchronous servomotor, a first retarding mechanism, a second retarding mechanism, a six-link type working mechanism and a guiding mechanism, wherein the first synchronous servomotor and the second synchronous servomotor are mounted on two sides of the stand in an eudipleural manner; the first retarding mechanism and the second retarding mechanism are mounted on two sides of the stand in an eudipleural manner; the six-link type working mechanism is mounted in the frame of the stand; an input end of the first retarding mechanism is coaxially arranged with an output shaft of the first servomotor; an output shaft of the first retarding mechanism is fixedly connected with an input end on the right side of a crankshaft of the six-link type working mechanism; an input end of the second retarding mechanism is coaxially arranged with an output end of the second servomotor; an output end of the second retarding mechanism is fixedly connected with an input end on the left side of the crankshaft of the six-link type working mechanism; the guiding mechanism is mounted in the frame of the stand; and a slide block at the output end of the six-link type working mechanism is positioned in the guiding mechanism and can move up and down. The invention provides the servo mechanical press, which has a simple structure, is convenient to control, can reduce the output torque and the required capacity of the servomotors, and can be built with large tonnage and low cost.

The invention relates to a ball screw performance testing testbed based on motor servo loading. Rolling guide rails are arranged on a bed body, a movable pair is formed by the rolling guide rails and guide rail sliding blocks, the guide rail sliding blocks are fixedly connected with a workbench, a load ball screw pair is arranged in a middle groove in the bed body, a load nut seat is fixedly connected with the workbench, linear motor permanent magnet guide rails are arranged in outer inner grooves symmetrically formed in the bed body, a movable pair is formed by the linear motor permanent magnet guide rails and linear motor sliding blocks, and the linear motor sliding blocks are fixedly connected with the workbench. The ball screw performance testing testbed can simulate static or dynamic loads through a rotary servo motor or a linear servo motor, meanwhile, the locating precision, repeated locating precision, reverse errors, temperature rise and friction torque of the load ball screw pair are examined, the feasibility of the ball screw performance testing testbed in practical work is verified, the testbed has the advantages of being flexible in loading mode, high in loading precision and stable in loading process, and load lead screws of different lengths and the identical specification can be used for tests on the same performance testbed.

The invention discloses an electrochemical machining vibro-feed movement implementation device, which belongs to the electrochemical machining field. The device comprises a servo feed movement device and a vibration device, wherein the vibration device is installed on the servo feed movement device via a sliding seat; the vibration device comprises a voice coil motor; the top end of a voice coil motor rotor is fixedly provided with a connecting block; the connecting block is connected with an electric conduction block via a transmission mechanism; and the electric conduction block is used for clamping a tool cathode. According to the electrochemical machining vibro-feed movement implementation device disclosed by the invention, the feed movement is realized by a servo motor, a lead screw and a guide rail pair, the voice coil motor is used for driving so as to realize the vibro-movement, and the two mutually-parallel movements are compounded to realize the vibro-feed movement of the tool cathode. According to the movement implementation device, the electrolysate discharge problem in the electrochemical machining process can be effectively solved, an electrolysate flow field is effectively improved so as to easily realize small-gap electrochemical machining, and a purpose of improving the electrochemical machining precision and stability is achieved.

A pair of foils are pivotably coupled to a nacelle. The nacelle is pivotably coupled to a mast extending down from to a frame and below a water surface. A push rod oscillates, causing the nacelle to experience a heaving motion, in turn causing the foils to flap up and down. The push rod is driven by a power plant such as a human rider. Angles of attack for the foils are actively controlled to optimize lift and propulsion forces provided by the foils to cause the water craft to move over the water. A steering fin is also provided for heading control of the water craft. A control system for separate angles of attack for the foil sends appropriate information to servo motors which cause the foils to rotate relative to the nacelle to achieve optimal angles of attack relative to the particular position of the nacelle at any given moment.

The invention discloses online fault detection, estimation and location method of a valve-controlled cylinder electro-hydraulic servo system. The method comprises the following steps: 1) performing nonlinear modeling of the system; 2) identifying normal parameters of the system; 3) substituting the data of normal operation of the system acquired in the step 2) into a nonlinear state equation of the system in the step 1), to obtain a normal system parameter matrix and an expression of the nonlinear state equation of the system; 4) acquiring relevant input/output parameters of the system in realtime; 5) performing fault detection and estimation under varying load; 6) making a robust fault decision; 7) if no fault exists in the step 6), returning to the step 4); if a fault exists, starting afault vector estimation module in a fault detection observer in the step 5); and 8) performing fault isolation and location. The method disclosed by the invention has the following beneficial effects: real-time monitoring on the operation state of the system can be performed in the case of unknown time-varying external load, nonlinearity and uncertain parameters in the valve-controlled cylinder system, so as to reduce economic loss.

The invention discloses a semi-active variable-stiffness energy dissipation and seismic mitigation control anchor bolt. The anchor bolt consists of a controller (1), a communicating line (2), a sensor (3), a variable-stiffness control device (12), a sleeve (20), a hollow anchor pipe (5), an anchor gear (10), an anchoring spring (11) and a support structure (4), wherein the variable-stiffness control device (12) consists of a hydraulic cylinder (13), a dual-striking piston (14), oil (16), a bypass pipeline (17), an electro-hydraulic servo valve (18), a stiffness spring (19a), a stiffness spring (19b), and a support box (21) and a base plate (22) connected through a bolt (23). According to the semi-active variable-stiffness energy dissipation and seismic mitigation control anchor bolt, the unrecoverable problems of excessive deformation of an anchoring and shotcreting support structure, unavailable self-adjustment of the support structure, even damages and the like caused by seismic actions are solved, and the seismic resistance of the anchoring and shotcreting support structure and the safety stability of a support body are improved.

The invention discloses a cam jet dispensing device mainly composed of a servo nozzle 1, a firing pin 5, a servo motor 14, a cam 15, a movement arm 20, a micrometer head 24, a pressing plate 23, and a spring 22. The firing pin 5 is arranged on the movement arm 20, such that a movement part is formed. The firing pin 5, the movement arm 20, and the cam 15 form a cam mechanism. The servo motor 14 drives the cam mechanism to rotate. The cam mechanism drives the firing pin 5 to move up and down, such that the closing and opening of the firing pin 5 and the nozzle 1 are realized. High-pressure glue at the nozzle 1 is jet through the nozzle 1. The device has the main characteristics that: (1) power of the device used for driving the firing pin is provided by the cam rotated by the servo motor; the rotation speed of the servo motor is stable; firing pin moves fast up and down; and jet frequency is high; and (2) firing pin movement speed of the device is determined by motor rotation speed; the amount of coupling coefficients is low, and controlling is convenient.

A CAM system of a servo numerical control press is characterized by comprising a data definition module, a parameter setting module, a die bank managing module, a CAD graph reading module, an automatic die adaptation module, a tool graph set writing-back module, a micro connection processing module and an optimization and NC program creating module. A CAM machining method of the servo numerical control press is characterized by including the data definition step, the parameter setting step, the die bank managing step, the CAD graph reading step, the automatic die adaptation step, the tool graph set writing back step, the micro connection processing step, and the optimizing and NC program creating step.

The invention discloses a testing device and an evaluating method for water stability of a water-permeable bituminous mixture. The testing device comprises a testing container, a loading system and a water-bath constant temperature control device connected with the testing container; a to-be-tested piece accommodating area is arranged in the testing container; and the loading system comprises a loading rod and a loading base which are connected with a servo loading testing machine. The evaluating method provided by the invention comprises the steps of: firstly, assembling the testing device; weighting the to-be-tested piece and recording the weight G1 of the to-be-tested piece; starting the water-bath constant temperature control device and forming water bath in the testing container, and keeping constant temperature after reaching a preset temperature; starting the servo loading testing machine to dynamically load the to-be-tested piece back and forth; if the to-be-tested piece is loosened after loading, confirming as being unqualified; otherwise, washing and drying, and then weighting and marking as G2; and calculating a stripping rate according to a formula. The bigger the stripping rate value is, the worse the water stability is. The testing device provided by the invention has the advantages of simple structure, low cost, convenience in assembling, high testing precision, and the like.

The invention discloses a full-automatic frost heaving meter which comprises a host loading frame (1), a freezing pressure chamber (2) and a high-low temperature cycle control system (3), a water level control system (4) and a computer (5). The freezing pressure chamber (2) is positioned on the host loading frame (1), the high-low temperature cycle control system (3) is connected with the freezing pressure chamber (2), the water level control system (4) is connected to the top of the freezing pressure chamber (2), and the computer (5) is connected with the water level control system (4), the host loading frame (1) and the high-low temperature cycle control system (3) and can be used for test control and acquisition. The full-automatic frost heaving meter can realize automatic control and acquisition of the test process, the requirement of high precision of test control in test can be effectively met by servo closed loop control, and the full-automatic frost heaving meter is high in stability and long in service life.

The invention relates to a robot trajectory tracking control method based on visual guidance. The method comprises the following steps: establishing a robot visual servo control system; establishing abinocular vision unified measurement field; carrying out observing by using a binocular vision device to obtain a pose transformation relationship between an end effector coordinate system and a measurement coordinate system, and converting the pose transformation relationship to a robot base coordinate system through the binocular vision measurement field; carrying out smooth estimation on the observed pose of an end effector by utilizing a Kalman filter; calculating the pose error of the end effector; and designing a visual servo controller based on fuzzy PID, processing the pose error to obtain an expected pose at the next moment, and sending the expected pose to a robot system to control the end effector to move. The technical scheme is oriented to the field of flexible machining of aerospace large parts and the application requirements of robot high-precision machining equipment, the pose of the end effector is sensed in real time through a visual sensor, so that a closed-loop feedback system is formed, and the trajectory motion precision of a six-degree-of-freedom series robot is greatly improved.

The invention discloses a glass flatness detection device convenient for comprehensive detection. The glass flatness detection device comprises an upper top plate, a servo motor, a bottom plate and adisplay screen, connecting pieces are connected into the left end and the right end of the upper top plate in a penetrating mode, the lower ends of the electric telescopic rods and the lower ends of the connecting pieces are fixedly connected with the upper surface of a transverse plate, the output end of the servo motor is connected with the rear end of a transverse rod, detection mechanisms arearranged on the lower surface of the transverse plate at equal intervals, the bottom plate is located under the detection mechanisms, a glass body is placed above a bearing plate, the inner surfaces of clamping plates are connected with rubber plates, the lower ends of the clamping plates are fixedly connected with fixing springs, and the display screen is located in the middle of the front side of the upper top plate. The glass flatness detection device convenient for comprehensive detection is convenient for comprehensive detection of glass, good in detection effect, convenient for positionlimitation of the glass and convenient for detection work, and does not cause damage to the glass.

The invention relates to a large face automatic measurement method based on a laser tracker. According to the method, a navigation trolley is used as a carrier of a right-angle three-coordinate servo mechanism, theoretical data of a product to be tested are extracted, a route is planned and optimized, the laser tracker is used for setting up a coordinate system in the three-axis direction of the right-angle three-coordinate servo mechanism, relationship of the coordinate and a product coordinate system is set up through transformation of the coordinates, extracted product theoretical data coordinates are transformed to a right-angle three-coordinate system through the least square method, so that automatic operation of the right-angle three-coordinate servo mechanism is controlled, and continuous, high-accuracy and efficient measurement of the product on multi-position is achieved.

The invention relates to the technical field of processing of fodder raw materials and specifically relates to fodder raw material crushing equipment capable of realizing intermittent feeding and discharging and an application method of the fodder raw material crushing equipment. On one hand, a No.1 rotating shaft is used for driving an upper pressing head to move up and down by virtue of a cam component so as to intermittently open an feeding opening and crush a material falling to the place between the upper pressing head and a lower pressing head; on the other hand, a transmission wheel anda transmission belt are used for driving transmission of a No.2 rotating shaft so as to make a spiral auger work, thus primary particles are guided by external force; feeding is accelerated when thefeeding opening is opened, and blocking is also prevented; a No.2 servo motor is used for driving the No.2 rotating shaft to drive an incomplete gear to rotate and is sequentially and periodically engaged with an upper bevel gear and a lower bevel gear; a No.4 rotating shaft is driven to rotate forwards and backwards to drive a screw rod to stretch and contract, and thus the upper pressing head the lower pressing head move up and down; and the right end of the top surface of the lower pressing head is intermittently lower than a discharging opening, so the crushed particles can be intermittently guided into a discharging pipe and fall into a screening hopper.

The invention relates to an electro-hydraulic liquid composite driving mechanism adapting to a narrow bent space as well as a control system and method, belonging to the technical field of fluid driving devices. The driving mechanism mainly comprises a servo motor, a screw rod nut pair, a piston type driving hydraulic cylinder, an execution hydraulic cylinder, a sealing ring and an oil delivery pipe. A piston of the piston type hydraulic cylinder is fixed on the screw rod nut; the servo motor is rotated by the driving screw rod for enabling the piston to generate axial movement, thereby causing the change of the volumes of a left cavity and a right cavity of the hydraulic cylinder and transmitting the power to the execution hydraulic cylinder through the oil delivery pipe and driving the load to move. Aiming at improving the driving performance and the use safety, the invention also provides an oil path control system comprising a one-way valve, a two-position four-way valve, a bidirectional safety valve, an energy storage oil tank and the like and a system control method. The invention has the advantages of fewer elements, compact structure, small size, high rigidity, quick response, high energy efficiency, high integration of electro-hydraulic liquid, easy transmission, adaption to narrow bent space, and the like.