64results about How to "Controllable stroke" patented technology

The invention relates to an automatic feeding device of a construction waste crusher, and relates to the technical field of construction waste treating equipment. The automatic feeding device comprises a machine body, wherein a charging opening is formed in the machine body; a feeding device for delivering materials to the charging opening is arranged at a position, on one side of the machine body, of the charging opening, and comprises a bottom plate; a tank body which is perpendicular to the bottom plate is arranged on the bottom plate; the end, far away from the bottom plate, of the tank body extends to a position higher than that of the charging opening; the feeding device further comprises a moving rod which is arranged between the tank body and the charging opening in the horizontaldirection; a sliding block which is connected to the inner part of the tank body in a sliding manner is arranged at one end of the moving rod, and a feeding box is arranged at the other end of the moving rod; the upper part of the feeding box is opened; a lifting driving mechanism for driving the sliding block to drive the feeding box to move to a position higher than that of the charging openingis arranged in the tank body; a material delivering device for delivering construction waste into the charging opening when the feeding box moves to the position higher than that of the charging opening is arranged on the feeding box, so that the construction waste is convenient to deliver into the machine body.

The invention relates to a wire winding device and a control method thereof. The wire winding device comprises a worktable; a wire winding roller is arranged on the worktable; a rotating nut is arranged in the wire winding roller; a screw rod is sleeved with the rotating nut and arranged on an output shaft of a motor; sensing mechanisms are arranged in the position, at the two ends of the wire winding roller, on the worktable and connected to a controller; and the controller is connected to the motor. The rotating nut is sleeved with the wire winding roller, the screw rod is sleeved with the rotating nut, the motor rotates positively or reversely to drive the screw rod to rotate and then drive the rotating nut to advance or retreat on the screw rod, and the sensing mechanisms determine the stroke, so that the wire winding quantity of wires can be controlled, wire winding is even, wire tapping is orderly, the stroke of the wire winding roller can be controlled, the situation that winding wires are excessive, and pulling is not easy does not occur, the motor drives wire winding, manpower is liberated basically, the wire winding quantity can be determined according to the stroke and the number of reciprocating times, the working efficiency is high, and controllability is good.

The invention discloses an MP3 product shell pressing and assembling device, which is characterized by comprising a product input / output device, a pressing head pressing device and a pressing head, wherein the product input / output device is provided with a fixing base for fixing MP3 products, and a slide platform cylinder which can horizontally move front and back is arranged at the lower end of the fixing base; the pressing head pressing device is arranged at the upper end of the product input / output device; and the pressing head is fixedly connected with a vertical movement mechanism and is driven by the vertical movement mechanism to press and assemble the MP3 products which are not provided with shells in the fixing seat. The MP3 product shell pressing and assembling device disclosed by the invention can greatly improve the assembling efficiency, reduce safety accidents in the assembling process, and ensure the stable quality, uniformity and low reject ratio of the assembled products.

The invention belongs to a brake hydraulic pipeline exhausting method and particularly relates to a hydraulic system automatic exhausting device and method for an electro-hydraulic brake test bed. Thedevice comprises a front brake wheel cylinder, a test bed body, a transparent hose, a rear brake wheel cylinder, a vehicle electronic stabilization system, a brake master cylinder, a liquid storage pot, an electronic mechanical brake booster, a support, a brake pedal, an adjustable seat, a signal acquisition and transmission platform, a PC, brake master cylinder hydraulic pipelines, two-positiontwo-way solenoid valves, caliper disk brakes and brake wheel cylinder hydraulic pipelines. The device automatically judges the exhausting completion moment through recognition processing according tothe state, acquired by cameras, of brake fluid discharged from the transparent hose, controls rotation of a motor through an ECU of the mechanical brake booster to achieve operations of treadling a pedal and loosening the pedal by simulating a person. The device can be more accurate, efficient, convenient and thorough in automatic exhausting control. The problems that time and labor are wasted, exhausting is incomplete and brake fluid corrodes operators can be solved.

The invention discloses automatic machining equipment for a conical fire grate, and relates to the technical field of non-standard cone machining. The automatic machining equipment specifically comprises a base, a gap ratchet wheel mechanism, a multi-angle polishing mechanism, a grooved pulley punching mechanism and a lifting discharging mechanism; a motor is arranged on one side of the base; andthe lifting discharging mechanism is arranged on the side, away from the multi-angle polishing mechanism, of the top end of a movable beam. According to the automatic machining equipment for the conical fire grate, through arrangement of a composite clamp mechanism, it is guaranteed that a workpiece can rotate intermittently to be matched with a punch to complete punching operation while the conical workpiece is clamped, and a clamping rod is driven by a transmission rod to complete clamping of the workpiece; through arrangement of a reset spring, a clamping mechanism can rebound quickly, thehigher working efficiency is achieved, the shape design that the top of the clamping rod is attached to the cone enables the mechanism to have the higher clamping force, the design that a driven gearis matched with a cantilever rod enables a clamp to intermittently move at a controllable rotating angle, and machining in the subsequent punching link is facilitated.

The invention discloses a stroke-controllable circuit breaker which comprises an arc extinguish chamber and a driving mechanism, wherein static contacts are arranged inside the upper end of the arc extinguish chamber; moving contacts are correspondingly arranged right below the static contacts at intervals; pull rods are connected with the lower parts of the moving contacts; the driving mechanism is elastically connected with driving rods and used for driving the pull rods to move upwards and downwards, thereby driving the moving contacts to be in contact with or move away from the static contacts. The stroke-controllable circuit breaker has great application values as the abrasion degree of contacts of a circuit breaker is effectively reduced, the closure and opening time of the circuit breaker is shortened and the property of the circuit breaker is improved.

The invention discloses an electromagnetic pile driver which comprises a fixed disc, electromagnets arranged in the fixed disc, a movable disc, closed coils and an electromagnetic hammer formed on the movable disc, wherein the closed coils are arranged on the movable disc and correspond to the electromagnets. Electric energy is adopted as the energy source by the pile driver, the electromagnets are arranged in the fixed disc, the closed coils are arranged in the movable disc, the electromagnetic hammer is connected to the movable disc, and the intensity of the electromagnets is changed according to the Lenz law to achieve piston movement of the movable disc, so that precise control over the pile driving force and frequency is achieved; meanwhile, energy is saved, emission is reduced, and noise is lowered.

In order to solve such defects in the prior that whether maxillary sinus is successfully lift is hard to judge and the operation is inconvenient, the invention provides a minimally invasive internal maxillary sinus lifting device for implanting teeth. The minimally invasive internal maxillary sinus lifting device comprises a bone fixing element, an internal lifting element and a force applying element, wherein the bone fixing element comprises a cylindrical body, a fixing part is arranged on the outer surface of the cylindrical body, and the cylindrical body is provided with a first through inner hole and a second through inner hole along the axial direction; the internal lifting element comprises a lifting rod and a lifting head, one end of the lifting rod is fixedly connected with the lifting head, the lifting rod is inserted in the first inner hole of the cylindrical main body, the other end of the lifting rod is fixedly connected with the force applying element through threads, and the force applying element is located in the second inner hole of the cylindrical main body. Since the travel of the internal lifting device provided by the invention is controllable, the lifting element is ensured not to break through a mucous membrane of maxillary sinus; in addition, since the integration degree is high, the lifting device provided by the invention is smart in structure and can be conveniently used for carrying out internal lifting operation in oral cavities.

The invention discloses an electric linear driver having shock-absorption protection and a controllable stroke. The electric linear driver comprises a motor, a slide sleeve pipe, a pull rope displacement sensor, a motor controller electrically, and a connecting plate connected with a pull rope of the pull rope displacement sensor; and a rubber buffer pad is disposed between the slide sleeve pipe and an end face of a thread bushing. According to the electric linear driver having the shock-absorption protection and the controllable stroke, a telescopic displacement of the slide sleeve pipe of an electric cylinder is detected through the disposed pull rope displacement sensor, so the stroke of the electric cylinder is accurate and controllable, and then the electric cylinder can be conveniently used to drive an object the displacement quantity of which needs to be accurately controlled; and the rubber buffer pad is disposed between the slide sleeve pipe and the end face of a thread bushing, so, in motor starting, stop, reversing and other working processes, the rubber buffer pad can buffer an axial impact force on a screw thread pair of a screw mechanism, damage of the axial impact force on the screw thread pair can be prevented then, and the failure rate of the electric cylinder is reduced.

The invention discloses a urine detection device. The device comprises an overflow bucket, an urine inlet tube, a first urine discharging tube, a second urine discharging tube, a syringe pump and a urine sucking needle; the overflow bucket is provided with an upward opening, and is also provided with an overflow hole; the overflow bucket is connected with the urine inlet tube; the bottom of the overflow bucket is connected with a pollution discharging tube through the first urine discharging tube; the overflow hole is connected with the pollution discharging tube through the second urine discharging tube; the first urine discharging tube is provided with a valve; the syringe pump is fixedly connected to a base, and is connected with the urine syringe needle through a flexible tube; and theurine sucking needle and the overflow bucket relatively move in a perpendicular direction, and the urine sucking needle sucks urine under the action of the syringe pump, titrates the urine along a horizontal direction, and discharges the remaining urine into the overflow bucket. The device can ensure that the detected urine is the middle urine part of a detected person, and can wet the overflow bucket with the urine to make the urine detection result truly reflect the physical condition of the detected person and improve the reliability of the test result.

The invention discloses a pin press-fitting machine for assembling an automobile air conditioner compressor base and an application method of the pin press-fitting machine. The lifting of a horizontalpushing mechanism, a pre-pressing pin combination plate and a hanging bracket assembly part is achieved through a vertical lifting mechanism. The pre-pressing pin combination plate is in contact witha flange surface at an upper end of the base, pin holes in the pre-pressing pin combination plate are aligned with pin hole positions in an upper surface of the base, the initial state of a push plate is that pin holes in the push plate are aligned with the pin holes in a pin guide-in plate, and after cylindrical pins are distributed in the pin holes of a pin distribution disc through a vibrationdistribution machine, lower ends of the cylindrical pins are inserted into the pin holes in the push plate. And a pushing air cylinder works, and the push plate pushes the cylindrical pins forwards along grooves in the pin guide-in plate until lower parts of the cylindrical pins are inserted into the pin holes in the pre-pressing pin combination plate. The accurate alignment of pin holes in the pre-pressing pin combination plate and pin hole positions in the base can be ensured, the pre-pressing depth of the cylindrical pins, the perpendicularity after pre-pressing and the uniform distribution of the cylindrical pins on a flange face of the base can be guaranteed.

The invention discloses a speed adjustable and automatic feeding device for taking a core from an intact loess hollow cylindrical sample. The device comprises a base, rectangular guide rails, a top beam, a tooth bar drill pipe, a drill bit, a transmission gear support, a transmission gear, an elevating stepless speed regulation motor, a gear, a rotary stepless speed regulation motor, and a sample table. The rectangular guide rails are vertically and symmetrically fixed on two sides of the base. Two ends of the top beam are fixed on two rectangular guide rails. The drill bit is arranged on the tail end of the tooth bar drill pipe. The transmission gear support is installed on the top beam. The transmission gear is installed on the transmission gear support and is engaged with the tooth bars of the tooth bar drill pipe. The elevating stepless speed regulation motor is installed on the top beam, and the gear is engaged with the transmission gear. The rotary stepless speed regulation motor is fixed on the center of the base. The sample table is fixed on the output shaft of the rotary stepless speed regulation motor. The device has the advantages of simple structure, convenient operation, and good using effect.

The present invention relates to the field of parts of a sunshade umbrella, in particular to a controllable automatic umbrella unfolding device, which comprises an upper runner, a middle runner, a lower runner and a center bar. The upper runner of the umbrella is fixed at the top end of the center bar, the middle runner and the lower runner of the umbrella are movably sleeved on the center bar, the upper runner is connected with long ribs, the long ribs are connected with short ribs, the middle runner is connected with branch ribs, the branch ribs are connected with the short ribs, the short ribs are connected with the lower runner, a gas spring is disposed in the center bar, the tail end of a cylinder barrel of the gas spring is connected with the middle runner of the umbrella, a valve is arranged at the end of a piston rod of the gas spring, and a valve opening device is disposed corresponding to the valve. The automatic umbrella unfolding device has the beneficial effects of: automatic umbrella unfolding, controllable stroke, simple structure, very few components and relatively low cost.

The invention discloses a small-sized precision squeeze riveter and aims to provide a small-sized precision squeeze riveter with simple structure, small noise and vibration, and is capable of realizing precision machining. The squeeze riveter comprises a machine body (1) and a control system. The machine body (1) is provided with a slider (2), a link rod arm (3), a power output rod (4), an elbow joint (8) and a power device (9). The slider (2) is hinged with one end of the link rod arm (3) and can move up and down along the machine body, the middle part of the link rod arm (3) is hinged with the machine body (1), two ends of the power output rod (4) are hinged with the other end of the link rod arm (3) and one end of the elbow joint (8), the power device (9) is electrically connected with the control system and connected with the other end of the elbow joint (8), the machine body (1) is connected with a swing rod (10), and one end of the swing rod (10) is hinged with the elbow joint (8) and the power output rod (4).

The invention discloses a novel hydraulic tailstock mandrel structure, which comprises a tailstock body, a tailstock oil cylinder, a cylinder flange, a mandrel flange, a piston connection nut, a guide sleeve, a retaining ring, a scraper, a top sleeve, a top, T-blocks, reading rulers, proximity switch brackets, proximity switches, mandrels and bolts. The structure of the novel hydraulic tailstock mandrel of the present invention is simpler than that of conventional tailstock mandrels, and the requirements for parts are greatly reduced, thereby reducing the processing cost; at the same time, the installation is more convenient, the degree of automation is higher, and the stroke is completely controllable.

The invention discloses a butt-jointing positioning and locking mechanism for a large device. The butt-jointing positioning and locking mechanism comprises a base, and further comprises a main bracket, a top column bracket and a top column which are arranged on the base; the top column can slide in a cavity of the top column bracket, and an elastic part is arranged between the end surface of the top column and the end surface of the top column bracket; and a V-shaped clamping plate and a lock hook are arranged on the base, the V-shaped clamping plate and the tail end of the lock hook are connected with a second column pin which is arranged on the base and rotate around the second column pin, and a side plate of the lock hook is connected with an output end of an air cylinder through a first column pin. According to the butt-jointing positioning and locking mechanism, the stroke of a telescopic rod of the air cylinder is controlled relying on the position sensing of the air cylinder, and the rotation movement of the lock hook is achieved; and a closed circuit is formed by the lock hook and a V-shaped clamping lock, mechanical limiting is achieved without other limiting sensors, thecontrol system is simple, and positioning is accurate and reliable.

The invention relates to an automatic press-fitting system and assembling method for ball screw pair supporting sleeves, belongs to the technical field of automatic assembly, and solves the problems of low assembly precision and complex operation of a mode of assembling the supporting sleeves by manual press-fitting, hot-fitting or cold-fitting in the prior art. The automatic press-fitting system comprises a sliding rail mechanism, a press fitting mechanism, a sliding clamp, an auxiliary positioning mechanism and a turnover mechanism, wherein the sliding clamp is used for loading the positioning support sleeves and ball screw pairs; the sliding clamp can slide on the sliding rail mechanism; the press-fitting mechanism is provided with a telescopic pressing head, and the supporting sleeves can be clamped into supporting sleeve clamping grooves of the telescopic pressing head and fixed through the auxiliary positioning mechanism; the supporting sleeves comprise a first supporting sleeve and a second supporting sleeve; the press-fitting mechanism can press-fit the first supporting sleeve on ball screw pairs by pressing the telescopic pressing head; the turnover mechanism can turn over the ball screw pairs, and the second supporting sleeve is pressed after the ball screw pairs are turned over. Automatic pressing of the ball screw pair supporting sleeves is achieved.

The invention discloses an electric appliance door lock switch capable of being manually unlocked for overcoming the defect that in the prior art, if a power failure occurs after an electric appliancedoor lock switch is in a locked state, an electric appliance door cannot be manually opened, and belongs to the technical field of electric appliance accessories. The electric appliance door lock switch comprises a shell, the shell is provided with a lock port where a door lock on the electric appliance door is inserted, a door lock hook, a lock sliding block, a driving block, a stop block, an unlocking rod and an electric driving device are arranged in the shell, the door lock hook is erected to the position, corresponding to the lock port, in the shell and can be rotated in the circumferential direction to be switched back and forth between the locked state and the unlocked state, and a torsion spring is further connected to the door lock hook. The lock sliding block can lock the door lock hook to prevent rotation of the door lock hook, the driving block is used for driving the lock sliding block to slide, the stop block can prevent sliding of the driving block, and the unlocking rod can drive the driving block to be switched from the locked state to the unlocked state. The electric appliance door lock switch is provided with the manual unlocking rod, and the electric appliancedoor lock switch can be unlocked by pulling the unlocking rod when a power failure occurs.

The invention discloses a connecting method of a load control dual-pressure system for a high-speed punching machine. The connecting method comprises the following steps: firstly, double pressure pumps, namely a high-pressure large-flow pump and a low-pressure small-flow pump, are respectively arranged inside a hydraulic system; an energy accumulator is additionally arranged on an oil path between the low-pressure small-flow pump and a hydraulic cylinder; meanwhile, another energy accumulator is additionally arranged on the oil path between the high-pressure large-flow pump and the hydraulic cylinder as an auxiliary power source; then the set load control dual-pressure system is adopted; rapid movement and punching action of the hydraulic cylinder are achieved by alternative use of the double pumps; simultaneously, a differential connection circuit is additionally arranged on the hydraulic system, and a hydraulically operated direction control valve is additionally arranged to achieve the on / off the differential connection circuit and the unloading of a low-pressure pump. The connecting method has the beneficial effects that the system is stable to move, the speed is easy to adjust, the travel is controllable and the noise is low; the stamping frequency is improved, and the service life is prolonged. Meanwhile, the operation controllability can be improved, and the labor intensity is reduced.

The invention discloses three-axis sensor production equipment with positioning, polishing and grinding functions, and relates to the technical field of electronic part production. Specifically, a base, a multi-angle output mechanism, a grinding mechanism, a connecting rod clamping mechanism and an overturning scraper blade mechanism are involved; supporting columns are fixed to two sides of the top end of the base, and a silica sol box is arranged on one side of a framework. An end seat is arranged on one side of the multi-angle output mechanism; and a runner port is formed in one side of a lifting platform. By means of the arrangement of the multi-angle output mechanism, the three-axis sensor production equipment with positioning, polishing and grinding function perfectly solves the problems of single whole function, inconvenience for adjustment of a grinding angle and low practicability of an automatic grinding device on the existing market in the background art; two motors adjust an output angle of a load workbench at the top end of a die holder through rotating fit of a transverse guide rail and a longitudinal guide rail; flexibility, lightness and controllable stroke are achieved; the polishing and grinding requirements of sensor materials of different specifications can be met in cooperation with the polishing mechanism at the front ends of the motors; and the applicability is higher.

The invention relates to a multifunctional teaching device for law and economics and a use method. At present, worktables for ideological and political teachers are fixed, inconvenient to use and poorin invisibility. The teaching device comprises a fixed table (1); a switch (2) is arranged on the side face of the fixed table (1); a bottom plate (13) is arranged below the fixed table; an engine support (15) is arranged above the bottom plate; the engine support is connected with an engine (16) through bolts; the engine is connected with a horizontal shaft (14); the horizontal shaft is connected with a horizontal bevel gear (11); the horizontal bevel gear is meshed with a vertical bevel gear (10); the vertical bevel gear is meshed with a vertical shaft (17); the vertical shaft is connectedwith a screw rod (6); the screw rod is connected with a movable cylinder (5); the screw rod penetrates through a lower plate (7) and a nut (8). The multifunctional teaching device for law and economics and the use method are provided.

The invention discloses a high-speed punch hydraulic system connection method capable of realizing fast direction change. Firstly, with a plunger pump in a hydraulic system as a center, a motor and an air filter are respectively arranged on both sides of the peripheral oil circuit of the plunger pump, and meanwhile, a pressure meter is mounted on each component; a valve subsystem which comprises an electromagnetic reversing valve, a check valve, an overflow valve, an energy accumulator and a proportional servo valve is arranged in the oil circuit area between a hydraulic cylinder and the plunger pump, wherein a filter and a cooler are sequentially mounted on the oil circuit between the energy accumulator and the plunger pump; the electromagnetic reversing valve and the check valve are connected in series in the valve subsystem to form a direction control loop, the overflow valve is connected in parallel with the direction control loop, and both ends of the proportional servo valve are directly connected into the peripheral oil circuit of the hydraulic cylinder. The high-speed punch hydraulic system connection method has the advantages that: the system can stably move, the speed of the system can be easily regulated, moreover, the travel of the system can be controlled, noise is reduced, the punching frequency is increased, and the service life is prolonged; meanwhile, the controllability of operation can be enhanced, and labor intensity can be decreased.

The invention relates to the field of rail vehicle clearance compensation, and provides a door clearance compensator, a door clearance compensator control system and method, and a rail vehicle. The door clearance compensator control system comprises: an air cylinder used for driving a pedal body to horizontally stretch out and draw back along the bottom face of a floor body, wherein the air cylinder comprises a cylinder body and a piston stretching out and drawing back along the cylinder body, and an extending air inlet and a retracting air inlet are formed in the cylinder body and connected with air pipelines respectively; an inductive switch arranged on the air cylinder and used for inducting the position of the piston; and a controller used for controlling the extending air inlet or theretracting air inlet to intake air according to the position, detected by the inductive switch, of the piston so as to control the piston to extend to a designated position or retract to the designated position. The door clearance compensator can solve the problems that an existing door clearance compensator of a pneumatic structure is of a turnover structure, large in occupied space, complex instructure and low in reliability, the telescopic stroke of a pedal cannot be controlled, and the telescopic distance of a pedal is fixed and cannot be adjusted.

The invention provides an electric appliance door lock switch and belongs to the technical field of electric appliance accessories. The electric appliance door lock switch aims at overcoming the defect that in the prior art, a brake sliding block inside an electric appliance door lock switch which is driven by a door latch to achieve automatic locking is prone to abrasion. The electric appliance door lock switch comprises a shell. The shell is provided with a lock opening, wherein the locking opening is used for allowing a door lock on an electric appliance door to be inserted therein. The shell is internally provided with a door lock hook, a lock sliding block, a stop block, a driving block and a driving device. The door lock hook is arranged at the position, corresponding to the lock opening, inside the shell in an erected manner and can rotate in the circumferential direction to be switched between the locked state and the unlocked state. The door lock hook is provided with a driving curved surface with the height difference. A torsional spring is connected to the door lock hook. One end of the stop block is an adjustment end, and the other end of the stop block is a locking end. A stop block spring is connected to the stop block, wherein the stop block spring drives the adjustment end of the stop block to be closely attached to the driving curved surface all the time. The locking end can stop the driving block from sliding. According to the electric appliance door lock switch, the stop block is small in abrasion, the stroke is easy to control, manual unlocking can be achieved, and the good waterproof performance is achieved.

The invention discloses a temperature change film deposition system. The temperature change film deposition system comprises multiple deposition devices and a substrate transfer device; the multiple deposition devices are uniformly distributed around the substrate transfer device, and have substrate temperature control mechanisms for respectively keeping constant temperature of a substrate bearing platform; the substrate transfer device includes a three-dimensional moving device; a protection gas nozzle is arranged at the tail end of the three-dimensional moving device; and grabbing devices are arranged on two sides of the protection gas nozzle, and are used for grabbing the substrate bearing platform. The temperature change film deposition system, provided by the invention, can deposit multi-element substance deposition films with high efficiency and high quality.

The invention discloses a small high-speed hydraulic oil cylinder which comprises an oil cylinder body and an oil cylinder head connected to the oil cylinder body, wherein a cylinder tube is arranged in the oil cylinder body, a first oil hole is formed in the oil cylinder head, a second oil hole is formed in the oil cylinder body, the first oil hole is communicated with the top of the cylinder tube, and the second oil hole is communicated with the bottom of the cylinder tube; a piston is coaxially nested in the cylinder tube and comprises an upper end and a lower end, the diameter of the upper end is larger than that of the lower end, the upper end is erected on a step surface at the bottom of the cylinder tube, a mounting groove is formed in the top surface of the upper end, a mounting hole is formed in the bottom surface of the lower end and communicated with the mounting groove, a valve needle is arranged in the mounting groove, one end of the valve needle is erected in the mounting groove, the other end is arranged in the mounting hole, and the upper end of the valve needle is fixed in the mounting groove through a limit block; and a snap spring is connected to the outer wall of the lower end in a sleeving manner. By means of the small high-speed hydraulic cylinder, positions of rubber feed points of a small plastic product are closer, and when a needle valve hot runner system is adopted, the problem that no space is reserved for accommodating the traditional oil cylinder due to overlarge diameter can be solved with application of the cylinder.

An ejecting mechanism comprises a support plate and a support, and is characterized by further comprising an ejecting plate, a roller system and driving equipment, wherein the ejecting plate is horizontally and transversely arranged, more than one oblique surface is arranged on the upper surface of the ejecting plate, the lower surface of the ejecting plate is a horizontal plane, the roller system consists of upper rollers and lower rollers which are parallel to each other, each oblique surface of the ejecting plate is correspondingly provided with one upper roller, the upper rollers are transversely laid on the oblique surfaces of the ejecting plate, two ends of each upper roller are connected with limiting devices which limit horizontal displacement of the upper roller, the support plate presses on the upper rollers, the lower surface of the ejecting plate presses on the lower rollers, and the driving equipment controls transverse reciprocation of the ejecting plate. The ejecting plate is driven to reciprocate, accordingly, the upper rollers roll on the oblique surfaces of the ejecting plate, the altitudes of the upper rollers are changed along with change of the heights of the oblique surfaces, and the altitude of the support plate pressing on the upper rollers is also changed. The ejecting mechanism is simple in structure and convenient in operation, and the ejecting stroke can be easily adjusted.

The invention relates to the technical field of valves, and discloses a gate valve convenient to regulate and control. The gate valve comprises a valve body, a through hole is formed in the valve body, a valve plate is arranged in the valve body, a first driving mechanism in transmission connection with the valve body is arranged at the upper end of the valve body, the first driving mechanism comprises a motor located at the upper end of the valve body and arranged transversely, the output end of the motor is sleeved with a first bevel gear, the first bevel gear is provided with a second bevelgear capable of rotating around the vertical axis in a meshed manner, and a screw is fixedly sleeved with the second bevel gear; and the lower end of the screw extends into the valve body and is in threaded connection with a transmission member, the transmission member is fixedly connected with the valve plate, the upper end of the screw extends out of the second bevel gear and is provided with acoupling, the upper end of the coupling is in transmission connection with an angular displacement sensor, the angular displacement sensor is provided with a fixing frame, and the signal output end of the angular displacement sensor is electrically connected to a valve control system. The gate valve can realize the intuitive understanding of the opening and closing degree of the valve plate, andadjustment is more convenient to achieve.

The invention discloses a magnetic suspension swing type motor which comprises a motor support; a silicon steel sheet base is installed on the lower portion in the motor support; a silicon steel sheet set is installed on the top of the silicon steel sheet base; a coil is installed on the inner side of the silicon steel sheet set; a swing rod support is connected to the lower portion in the motor support; the left side and the right side of the lower portion of the swing rod support are each provided with a longitudinal elastic piece; the top of each elastic piece is connected with an installation base; the top of each installation base is connected with a longitudinal swing rod; and a magnet is installed at the bottom of each installation base and arranged above the corresponding coil. When the coil is powered on, under the action of a magnetic field generated by the coil and a magnetic field of the magnet, the swing rod on the mounting base swings left and right stably; under the reset action of the elastic piece, the swing rod on the mounting base automatically resets; and the stroke is controllable, vibration is small, noise is small, power consumption is small, driving force is stable, driving force is sufficient, energy consumption is small, the service life of a battery is prolonged, and energy is saved.