228results about How to "Reduce rigid impact" patented technology

The invention relates to a self-locking material clamping device with a buffer. The self-locking material clamping device comprises an electric clamping jaw, a spring buffer mechanism and a measurement element, the electric clamping jaw comprises a mounting plate, and two opposite grippers and a driving component driving the grippers to move face to face or back to back are arranged on the mounting plate; the spring buffer mechanism comprises a connecting block and a first slider in sliding connection with the connecting block and in connection with the mounting plate, two parallel guide shafts are connected to the connecting block, a perpendicular protrusion is arranged in the middle of the first slider, the protrusion sleeves the middles of the two guide shafts, and the guide shafts are sleeved with springs butting against the side wall of the connecting block and the side wall of the protrusion; the measurement element comprises a photoelectric sensor, a photoelectric switch and a visual sensor, the photoelectric sensor which is located between the two grippers is used for detecting whether materials are clamped by the electric clamping jaw or not, the electric clamping jaw is used for limiting when the grippers are closed and opened, and the visual sensor is used for identifying a positioning piece fixed to a material platform so as to acquire relative position information of the materials relative to the grippers.

The invention discloses a cleaning and dust removal vehicle for building construction sites, which comprises a bottom plate, on which a left upright post and a right upright post are vertically welded and fixedly installed, and a water outlet pipe is opened on the left side wall of the piston head, and the water outlet pipe extends leftward to the left upright post On the left side, there is a nozzle at the end of the outlet pipe far away from the piston sleeve; a water inlet pipe is connected between the water tank and the piston sleeve, and a runner is installed on the horizontal extension plate, and a driving pulley is coaxially fixed on the runner. The pull rope bypasses the fixed guide pulley, and the end of the pull rope away from the runner is fixed on the bottom surface of the piston head; the structure of the invention is ingenious, and the cleaning disc can perform reciprocating movement in the left and right directions while rotating and cleaning the ground, thereby realizing the left and right direction cleaning of the ground , greatly improving the range of cleaning; the deformation elongation and compression of the shock absorbing spring play the role of buffering and shock absorption, effectively weakening the rigid impact of the cleaning disc on the rough ground, and improving the cleaning stability of the cleaning disc.

The invention discloses a leg bouncing mechanism for a frog-type robot. A tension spring is sleeved on a guide rod. The tail end of the spring is connected with a hip joint, and the upper end of the spring is connected with a slider. The guide rod, the slider, an oblique support rod, a thigh and joints form a crank slider structure. The leg part consists of a thigh, a shank, a connecting rod and joints; and the leg structure comprises the combination of two four-rod mechanisms. The stretch and contraction of the leg mechanism can be adjusted by controlling the slide of the slider on the guide rod. The sole of the robot is arc-shaped, and an arch support is arranged on the sole. The mechanical structure of the invention simulates skeletons of a frog, optimizes the leg structure, improves the utilization ratio of energy of power elements, improves the flexibility of the mechanical structure, and improves the jumping ability of the robot.

The invention discloses a dough kneading device for noodle production processing. The device comprises a bottom plate, wherein a slide bar is vertically arranged in a spacing sleeve in a sliding manner; a connecting rod is connected between the slide bar and a rotating wheel; a segment gear is arranged on the lower bottom of a top plate in a rotating manner; a driven belt pulley is coaxially fixedly arranged on the segment gear, a driving belt pulley is coaxially fixedly arranged on the rotating wheel, transmission belts are wound on the driving belt pulley and the driven belt pulley, and a first spacing spring is arranged between a semi-circular block and the bottom plate; a push-pull rod is horizontally fixedly arranged on a spacing pin bolt; a dough kneading groove is fixedly formed inthe bottom plate, and a gear motor is arranged at the bottom of the dough kneading groove. According to the dough kneading device, a dough in the dough kneading groove is repeatedly extruded and kneaded by up-down reciprocating motion of a dough kneading briquette, and the dough is extruded by the dough kneading briquette and is rotated, so that the dough can be extruded in different positions; and the dough is extruded rightward intermittently by a push plate, so that the dough can be concentrated and sufficiently contacted with the dough kneading briquette, and the dough kneading efficiencycan be greatly increased.

The invention relates to a quick mould opening / closing control structure and a control method of a toggle type injection molding machine comprising an oil supply oil tank, a mould opening / closing hydraulic cylinder, a main oil pipeline, an oil return pipeline, a servo hydraulic driving device, a directional control valve and a proportional flow valve with feedback. By the device, the servo hydraulic driving device is utilized to provide pressure oil required by mould opening / closing, the pressure oil enters a mould opening / closing oil cylinder, then the set value of the mould opening / closing pressure is reasonably increased by utilizing the performance of the servo hydraulic driving device, and the speed tracing pressure of the pressure oil keeps high-speed running with large flow rate inthe mould opening / closing process; the proportional flow valve with the feedback is reasonably regulated at a mould closing stop stage and a mould opening termination stage to control the magnitude of the oil return quantity, oil return resistance is provided to prohibit the movement of a movable template, the rigid impact of the template to a machine in the high-speed running process is reduced,the mould opening / closing running is stable, and the accuracy of a stop position is high; and the quick mould opening / closing control structure and the method realize the advantages of high speed, high accuracy, high efficiency, low energy consumption and the like.

The invention discloses an assisting exoskeleton robot. The robot includes an exoskeleton waist hip part, exoskeleton leg knee parts and exoskeleton foot parts all of which are connected with one another in sequence; each hip joint is provided with a spring cam mechanism with a certain degree of freedom for inward and outward stretching, the human hip joints can flexibly and smoothly move within acertain range and can recover to original positions when no external force is performed on the joints, a support-phase damping structure in series connection with each thigh casing pipe end enables an exoskeleton with a load to buffer rigid impact caused between exoskeleton legs and the ground by the inertia of the load when the feet of the human body touch the ground during walking, and therefore an overall assisting exoskeleton mechanism is dynamically protected; an elastic torsion block is connected to each shank end, the torsion degree of freedom is increased, and the exoskeleton legs canrotate along with the inward and outward rotation of the human legs; the flexibility and comfort when the a user wears the exoskeleton are improved, correspondingly the exoskeleton with the load canbuffer rigid impact caused between the exoskeleton legs and the ground by the inertia of the load every time the feet of the human body touch the ground during walking, the overall assisting exoskeleton mechanism is dynamically protected, and the comfort of a wearer is improved.

An embodiment of the invention provides a centrifugal fan impeller and a centrifugal fan with the same. The centrifugal fan impeller comprises a hub, blades and an impeller cover, wherein the blades are mounted between the hub and the impeller cover and include backward long blades and short blades, the long blades are larger than the short blades in flow length, the long blades and the short blades are distributed alternately between the hub and the impeller cover, and the short blades are equal to the long blades in inlet diameter. A meridian channel molded line of the impeller cover is a smooth curved line from an inlet to an outlet of each of the long blade or short blade. Using the centrifugal impeller solves the problem of noise caused by an existing centrifugal fan impeller.

The invention discloses a device for measuring a heat exchange coefficient of an interface between a high-temperature steel plate and a die in a hot stamp process. The device comprises a pressure applying device and a measurement device, wherein the pressure applying device comprises a pressurization device, an upper workbench and a lower workbench, wherein the pressurization device is connected with the upper workbench and the lower workbench respectively; the measurement device comprises an upper fixture, a lower fixture and a test sample fixing fixture; the upper fixture is fixed on the upper workbench; the lower fixture is fixed on the lower workbench; and the test sample fixing fixture is arranged between the upper fixture and the lower fixture. The invention also discloses a method for measuring the heat exchange coefficient of the interface between the high-temperature steel plate and the die in the hot stamp process. By the device and the method, the limitation to samples with the thickness being more than 30mm in the prior art is avoided; the heat exchange coefficient of the interface between the steel plate and the die in the hot stamp process can be measured; and by an elastic energy storage element, stabilization of interface pressures between a boron steel test sample and an upper die and between the boron steel test sample and a lower die can be guaranteed.

Provided is a wearable lower limb exoskeleton rehabilitation robot, which comprises a waist-hip joint device, a legs continuous adjusting device, and an ankle joint-foot device, wherein the waist-hipjoint device comprises three degrees of freedom of fore-and-aft flexion and extension, inside-and-outside extension and inside-and-outside rotation, so that flexibility of motions and comfort of wearing are improved, diversity of motion gait is increased, and comprehensiveness of rehabilitation training strategies is improved; the legs continuous adjusting device adopts a positive and negative screw rod continuous adjusting mode, so that a matching accuracy between a human body and the exoskeleton robot and use efficiency of a motor are improved, abrasion of parts of the exoskeleton robot is reduced, and service life of the exoskeleton robot is prolonged; and the ankle joint-foot device reduces impact caused by external force on the ankle joint, and functions of saving labor and automatically resetting are achieved; and a buffer structure of the foot structure can reduce rigid impact force formed by ground reflection, so that the exoskeleton robot body is protected, and the comfort ofa wearer is improved.

The invention discloses a soft capturing and locking device for a space and a corresponding capturing and locking method and particularly relates to a tail end capturing and locking device for a space manipulator. The soft capturing and locking device is divided into two parts including an active capturing mechanism and an adapter; and the active capturing mechanism is composed of a capturing assembly and a tightening assembly. The capturing and locking method comprises three processes including capturing, locking as well as releasing and separating; during capturing, a rotating ring of the capturing assembly forwards rotates, and a steel wire rope is gradually closed up from a completely opened state until a pull rod of the adapter is completely clamped; during locking, the tightening assembly drives the capturing assembly to upwards move until the adapter completely presses against the end surface of the active capturing mechanism; and during releasing and separating, the rotating ring of the capturing assembly reversely rotates, the steel wire rope is restored to the completely opened state from a closed-up state, the space manipulator takes with the soft capturing and locking device and the adapter to realize separation. The soft capturing and locking device can be used for the space manipulator, can be used for soft capturing and locking a small load in a space and has the beneficial effects of little capturing impact, light weight, small size and large tolerance.

The invention relates to a lamp damping device which comprises a reflective cup, an elastic support component for supporting the reflective cup, a fastening piece arranged on the elastic support component, and a press plate which is fixed on the elastic support component through the fastening piece, wherein a damping part is fixedly arranged between the press plate and the elastic support component. The invention also provides a damping lamp which comprises a reflective cup, a light source arranged in the reflective cup, a lead connected with the light source, an elastic support component supporting the reflective cup, a fastening piece arranged on the elastic support component, and a press plate which is fixed on the elastic support component through the fastening piece, wherein a damping part is fixedly arranged between the press plate and the elastic support component; and the damping lamp is externally fixed through the elastic support component. According to the invention, the damping part is arranged between the press plate and the reflective cup to prevent the press plate from directly contacting the reflective cup, and simultaneously the damping part plays a role in damping vibration in an impact test, so that the reflective cup is effectively protected, and the impact test on a steel ball on the top of the lamp can be carried out smoothly.

The invention relates to an automatic lifting floating type integrated flexible net cage. The integrated flexible net cage comprises an upper floating frame assembly; the upper floating frame assemblyis of a circular or polygonal rigid structure and floats on water surface through a floating body; multiple automatic lifting devices are arranged at different positions of the upper floating frame assembly and include mounting brackets, winch wheels arranged on the mounting brackets and motors, the winch wheels are wrapped with pulling ropes, and output shafts of the motors are coaxially connected with the winch wheels; the lower ends of the pulling ropes are connected with connecting ropes, the connecting ropes are fixedly connected to a purse seine, and the purse seine is of a flexible structure; the purse seine is fixedly connected with a lower supporting assembly, the lower portion of the lower supporting assembly is connected with an anchor, and the anchor sinks into the bottom of awater body. The adoption of the automatic lifting floating type flexible net cage, on the one hand, can buffer the rigid impact of waves, and on the other hand, can solve disasters caused by bad seaconditions to aquaculture by lifting the purse seine. At the same time, the manufacturing cost of the net cage is reduced, and the mechanical automatic lifting solves the problems of deep sea super large flexible net cages.

The invention relates to a traction connector with a buffer, which comprises a traction side connection piece with a horizontal connection shaft hole and a vertical connection shaft hole, a fork joint piece including a pair of symmetrical arm parts and a base part, a connection shaft for coupling the traction side connection shaft between two arm parts of the fork joint piece, a transmission shaft fixed on the base part of the fork joint piece and a dragging side connection piece with a plurality of connection holes, wherein a through sliding sleeve cavity and a buffer cavity with an opening are formed on the connection piece; the connection piece is sleeved on the transmission shaft through the sliding sleeve cavity and axially limited by a locking piece; and a buffer spring is assembled on the transmission shaft which runs through the buffer cavity. The dragging side connection piece provided by the invention can move relatively and rotate 360 degrees on the transmission shaft and therefore can adapt to different various rugged and complex road conditions and can reduce the rigid impact during braking. The traction connector with the buffer has the characteristics of compact structure, high adaptability, high stability and long service life.

The invention discloses an exoskeleton power knee joint structure. The exoskeleton power knee joint structure is characterized in that bending and extension motion of a knee joint is achieved througha crank sliding block mechanism principle; a screw rod rotates to drive an elastic sliding block assembly to slide along the screw rod; a sliding block and a knee joint rotating body are in series elastic drive flexible transmission; when being acted by external force, an output end can react in a highly dynamic form, a mechanism is protected, impact of uncertain environments to the mechanism is reduced, and force output of bending and extension motion to human bodies can be accurately controlled; bending and extension motion of the knee joint is achieved through a crank sliding block mechanism, linear springs are adopted in a transmission chain, and the mechanism can perform flexible outward drive; and an elastic body is introduced, and when the mechanism performs bending and extension motion, the springs are compressed and released, so that overload energy can be stored in the springs and is released when the springs return to the initial state, peak power of power drive can be reduced, force output is more smooth, and power assisting efficiency is greatly improved.

The invention relates to the technical field of crystalline silicon solar cell automatic production equipment, in particular to a silicon wafer vacuum adsorption manipulator. A manipulator capable of conveying silicon wafers stably and efficiently is provided for online automatic production. The side faces of comb-shaped grooves of comb-shaped vacuum adsorption fingers are concave-convex adsorption surfaces, so that the adsorption area is increased, and the effect of preventing the silicon wafers from being broken is achieved. Through adoption of the manipulator, a plurality of silicon wafers can be stably adsorbed in vacuum, and can be accurately rotated horizontally by preset angles. Furthermore, 50 silicon wafers can be adsorbed at a time and can be rotated by 180 degrees, and 100 silicon wafers are automatically placed together back to back.

Disclosed is a modified textile insertion pnenolic aldehyde supporting ring, guiding ring and its production method, which comprises the components (by weight portion) of fabric 15-30%, thermosetting phenolic resin 50-70%, polytetrafluoroethylene resin 0-10%, aluminium silicate magnesite powder 0-10%, molybdenum disulfide 0-10%, graphite 0-10%. The preparation process comprises fabric gumming, drying, forming, curing, cooling down, demoulding, renovating and cutting.

The invention discloses a mars rover elastic wheel. The mars rover elastic wheel comprises a hub, arc-shaped elastic spokes, a wheel surface and excessive deformation protection mechanisms, wherein the hub is cylindrical and one end of the hub is connected with an axle; the hub and the wheel surface are connected through the arc-shaped elastic spokes, one end of each arc-shaped elastic spoke is evenly fixed at equal intervals in the peripheral circle of the hub, and the other end of the arc-shaped elastic spoke is fixed at the inner side of the wheel surface; each excessive deformation protection mechanism comprises a support rod and a top plate. The top plate is supported by the support rod and fixed in the peripheral circle of the hub. The top plate is located between the hub and the wheel surface; the mars rover elastic wheel has a simple structure, the wheel surface has a large deformability, the mars rover elastic wheel has strong recovery, and has a strong adaptability to low-gravity and complex road conditions on the surface of Mars.

The invention relates to a cutting machine for steel-plate beveled edges. The invention is characterized in that the cutting machine comprises a frame and a speed-reducer which is driven by a motor and is mounted on the frame. An output shaft of the speed-reducer is in fixed connection with a milling cutter used for cutting the steel plate, a bearing wheel mechanism used for bearing the steel plate is arranged under the steel plate needed to be cut and on the frame, and a pressing wheel mechanism is arranged above the steel plate needed to be chipped and on the frame. The central of the tooth shape of the milling cutter is dissymmetric, and an angle alpha of a knife groove and the symmetric center is 0 to 15 degrees. The invention is capable of promoting the processing efficiency, and is capable of reducing labor intensity and producing cost.

The invention discloses a lifting anti-rolling device for a container gantry crane. The lifting anti-rolling device comprises a hanger, a hanger upper frame arranged on the top end surface of the hanger and a crane arranged above the hanger upper frame, wherein a winding drum is arranged on the center of the top end of the crane; four steel wire ropes are wound on the winding drum; two first slide wheels are arranged at each of the two sides of the top end of the crane; two electric push rods are arranged at the bottom end of the crane; the two electric push rods are oppositely arranged; a steel wire rope fixing part is arranged on each electric push rod; second slide wheels are arranged on four top corners at the top end of the hanger upper frame; each second slide wheel is arranged in an inclined mode; the four second slide wheels are in one-to-one correspondence with four first slide wheels; and the trend of each steel wire rope is along the winding drum, the first slide wheels, the second slide wheels opposite to the first slide wheels, and the steel wire rope fixing parts of the electric push rods. According to the lifting anti-rolling device, needs on output torque of a speed reducer are reduced, rigid impact on a crane steel frame is reduced, and the service life of the crane is prolonged.

The invention relates to a grain loss monitoring sensor with an array buoyant raft structure, and belongs to the technical field of grain loss measurement of combine harvesters. The grain loss monitoring sensor is mainly used for monitoring entrainment and cleaning loss during harvest of grains such as wheat, paddy, rapes and the like by a combine harvester. In the grain loss monitoring sensor, two layers of thin plates which are riveted are used as a machine frame; a sensitive element is bonded on the reverse side of an upper panel to form a unit; a plurality of monitoring units are arrangedon a floating support plate in parallel; a vibration damping sheet is arranged between each unit and the floating support plate and between the floating support plate and a sensor base; an independent signal modulation circuit is designed in each monitoring unit; and lost grains are identified from other impurities by the signal modulation circuits and output standard square-wave voltage signals,and the square-wave voltage signals are acquired in real time by a secondary meter to obtain the number of the grains lost within a monitoring area of the sensor. The grain loss monitoring sensor is high in monitoring accuracy, high in frequency and small in interference of vibration, and can be applied to real-time monitoring of the entrainment and cleaning loss of the combine harvester.

The invention discloses an assistance external skeleton segment-type foot structure of the lower limb. Elastic disc-type structures which are turnable and returnable through torsion are adopted as theankle joints of the feet, when the ankle joints of the human body move, the ankle joints of the feet of the external skeleton can move along with the ankle joints of the human body, and through deformation of a spring, the dynamic performance and flexibility of an external skeleton system are improved; separated hinge design is adopted for the toe joints of the feet of the external skeleton, thefront soles of the feet of the external skeleton are separated from the rear soles, each front sole is divided into the left and right parts, the toe joints of the feet of the external skeleton can follow to move in the gait of the human body, and the constraint of the external skeleton to movement of the feet of the human body is reduced; when the external skeleton is worn, the structure can adapt to the uneven road, the maximum contact area of the feet of the external skeleton and the ground is increased, and the external skeleton can be relatively stably supported at the support phase. By adopting the multi-segment rigid and flexible composite feet, the movement gesture of the feet of the human body can be fitted to the higher degree, and the flexibility and movement follow-up performance of the human body when the assistance external skeleton is worn are improved.

The invention relates to a mechanical arm and a mould setting truss manipulator with the same. The mechanical arm comprises a mounting rack, a first buffer component, a second buffer component, a crossbeam, a first drive device and grippers and is characterized in that the crossbeam and the mounting rack are connected through the first buffer component and the second buffer component, and the first buffer component and the second buffer component are used for reducing the rigid impact of the crossbeam to the mounting rack; the grippers are slidably connected with the crossbeam, and the first drive device is used for driving the grippers to slide along the crossbeam. By the arrangement, the mechanical arm has the advantages that flexibility is achieved, the rigid impact borne by the mechanical arm during gripping is reduced, the precision of the mechanical arm is increased, and the service life of the mechanical arm is prolonged.

The invention belongs to the technical field of the test of mechanical test equipment, and relates to an electric main shaft reliability loading testbed for load comprehensive decoupling. The testbedcomprises an electric main shaft clamping module, a radial force amplitude loading module, a radial force mean loading module, a cutting torque loading module, an axial force loading module and a loading unit module; the electric main shaft clamping module, the radial force amplitude loading module, the radial force mean loading module and the cutting torque loading module are fixed on horizontaliron; one end of a simulated handle in the loading unit module is connected with a bellows coupling in the cutting torque loading module, and the other end is matched with a main shaft conical surfacethrough a simulated real handle conical surface; the axial force loading module are connected with two sides of a front end of a dynamometer base in the cutting torque loading module through bracketsat two ends. The loaded state under a main shaft real working status is simulated by adopting the collaborative loading of an electrodynamics vibration generator and an electric cylinder, the load comprehensive decoupling is realized by adopting the flexible loading structure, and the loading accuracy is improved.

The invention relates to an automatic needle loading machine for needle roller bearings, and belongs to the technical field of needle roller bearing production equipment. According to key points of the technical scheme, the automatic needle loading machine comprises a working table, and a rolling element feeding assembly for providing rolling elements, a cage feeding assembly for providing cages,a cage push-out assembly for pushing the cages out of the cage feeding assembly, a cage pushing assembly for pushing the cages to a needle loading position, a stirring assembly for stirring the cagesto continuously rotate to achieve uninterrupted needle insertion and a needle inserting assembly for inserting the rolling elements into windows of the cages are fixedly arranged on the upper surfaceof the working table, so that an effect of improving needle loading efficiency is achieved.

The invention discloses a mechanical optical gate of a high-power laser, which comprises a feed mechanism, a guide mechanism and an energy absorption mechanism, wherein the guide mechanism comprises an optical gate box, an optical gate rotating body is mounted in the optical gate box, a semiconductor red light generator is mounted on one side of the optical gate box, a red light reflecting mirror which is positioned on the same horizontal line with the center of the semiconductor red light generator is mounted at the front end of the optical gate rotating body, and an optical gate mirror is mounted at the tail end; the feed mechanism comprises a rotating cylinder connected with a rotating shaft at the middle part of the optical gate rotating body; and the energy absorption mechanism is positioned on one side of the optical gate mirror and comprises an absorption body diaphragm, an absorption housing and an absorption body core for absorbing energy in the absorption housing, and the absorption body diaphragm is provided with a long circular open hole corresponding to the center of the semiconductor red light generator. By adopting the mechanical optical gate, the shortcomings of instability in guide, great deviation in motion displacement, small energy absorption area and low primary heat exchange efficiency of the existing optical gate mirror are overcome, and the mechanical optical gate has the characteristics of high action sensitivity, stable red light guide and high energy absorption efficiency.

The invention relates to a damping and noise-reduction drive plate assembly for an electromagnetic clutch. The damping and noise-reduction drive plate assembly for the electromagnetic clutch comprises a spline plate (1) consisting of a sleeve (1a) and a flange (1b), wherein the spline plate is connected with a suction cup (2) through a group of springs; the flange is connected with a group of first noise-reduction plugs (3); the first noise-reduction plugs are in noise-reduction matching with the suction cup correspondingly; a noise-reduction plate (4d) is arranged on each spring; each noise-reduction plate is connected with a second noise-reduction plug (5); and the second noise-reduction plugs are in noise-reduction matching with the flange correspondingly. The damping and noise-reduction drive plate assembly for the electromagnetic clutch has the advantages that by the damping and noise-reduction drive plate assembly, the suction speed of the suction cup can be reduced effectively, then rigid impact, suction sound and contact abrasion are reduced when the suction cup sucks a belt pulley, so that the effect of reducing vibration and noises is achieved, the service life of the electromagnetic clutch can be prolonged, meanwhile, the structure of a drive plate is improved on the premise of meeting performance, and shortcomings of large resistance to axial deformation of complete-cycle rubber drive plates and three-eye rubber drive plates are avoided effectively.

The invention relates to a grinding machine clamping device for an automatic grinding special machine. The grinding machine clamping device comprises a lower flange, a spring, a first floating plate, a flange connecting rod, an upper flange, a grinding wheel, a grinding machine, a grinding machine fixing flange, a second floating plate, a sensor and a guide shaft, wherein the grinding wheel is arranged on an output shaft of the grinding machine; the grinding machine is fixed to the grinding machine fixing flange; the grinding machine fixing flange is fixedly connected with the second floating plate; the sensor is arranged on the lower surface of the second floating plate; the lower end of the sensor is fixedly connected with the first floating plate; the first floating plate is positioned in the middle of the spring; the spring is arranged between the upper flange and the lower flange, namely, the upper end of the spring is pressed against the lower surface of the upper flange and the lower end of the spring is pressed against the upper surface of the lower flange; the first floating plate is connected with the upper flange and the lower flange through the guide shaft; the second floating plate is connected with the upper flange through the guide shaft; the upper flange and the lower flange are fixedly connected through the flange connecting rod; the lower flange is arranged on the automatic grinding special machine.

An energy-saving type automatic compensation valve core multi-functional pilot solenoid valve comprises a valve body and a solenoid drive mechanism, a wave-shaped diaphragm is arranged inside a valve chamber and comprises a main diaphragm, wave-shaped lips are arranged in a radial extension manner on the periphery of the main diaphragm, auxiliary flow passages are arranged in a valve cover and the valve body and internally provided with an auxiliary valve, the auxiliary valve comprises an auxiliary valve core, the auxiliary valve core is connected with a dynamic magnetic core in the solenoid drive mechanism, and an adjusting screw is arranged inside the valve cover and extends into the auxiliary flow passage. The energy-saving type automatic compensation valve core multi-functional pilot solenoid valve is suitable for large-stroke and mass-flow occasions, strong in shock resistance, reliable in sealing, capable of compensating errors during actual processing and assembling and controlling on-off speed of the valve according to actual requirements, and strong in applicable medium load performance, the valve is maintained open in an electrically neutral manner, and the electricity power is saved.

The invention provides a gravity transmission system. Guide rails are arranged on the two sides of a frame, and each guide rail comprises a forward transportation guide rail and a returning guide railwhich are located over the frame and located under the frame respectively; the forward transportation guide rails incline downwards in the transportation direction, the returning guide rails inclinedownwards in the returning direction, and the two ends of the forward transportation guide rails and the two ends of the returning guide rails are connected through arc transition tracks; a tray mechanism is arranged on the guide rails of the frame and can slide along the guide rails; the upper portion, in the transportation direction, of the end of the frame serves as a feeding station, and the lower portion, in the transportation direction, of the end of the frame serves as a working station; pneumatic turning mechanisms used for conveying the tray mechanism to the forward transportation guide rails from the returning guide rails are arranged at the joints of the forward transportation guide rails and the returning guide rails which are located at the feeding station; and the feeding station, the working station and the to-be-turned station of the frame are each provided with a blocking mechanism used for blocking the tray mechanism from advancing. According to the gravity transmission system, the structure is simple, the manufacturing cost is low, and maintenance is easy; power is supplied to transmission through the gravity, and additional driving force does not need to be supplied; and external energy sources are not consumed, and energy conservation and environment protection are achieved.