1754results about How to "Avoid vibration" patented technology

The invention relates to the technical field of turning machining, in particular to a turning machining device for bolt machining and production, which comprises a lathe body consisting of a lathe bed, a driving and guiding assembly, a clamping assembly for clamping a blank and a cutter arranged at the top of the driving and guiding assembly, and the driving and guiding assembly and the clamping assembly are both arranged on the lathe bed. In the whole turning process, the three-jaw chuck, the ejector pin and the supporting assembly conduct double supporting on the blank, in the whole turning process, the supporting assembly is always located at the position, a small distance away from the left side of the tool, of the left side of the blank, and the supporting assembly moves synchronously along with gradual movement of the tool towards the left side of the blank; according to the technical scheme, it is ensured that the cutting point of the cutter is located at the supporting assembly all the time, the stability of the blank in the whole turning process is ensured through the dynamic adjusting capacity, blank deformation and vibration caused by the cantilever effect are avoided, and therefore the influence of the cantilever effect can be effectively avoided, and the machining precision is greatly improved.

The invention discloses a multistage safety response control method of an industrial and commercial liquid cooling energy storage system, and relates to the technical field of electric energy storage systems, a sensor network collects an operation state data time sequence matrix, and abnormal data cleaning is carried out on the time sequence matrix; the method comprises the following steps: preprocessing a vibration signal of a cooling system, extracting characteristic data of abnormal vibration through Fourier transform and energy distribution analysis, and positioning a time-frequency distribution abnormal region; generating a time sequence multivariable data set according to the characteristic data of the abnormal vibration, determining a cause label according to the fused time sequence multivariable data set, obtaining the inherent frequency and the resonant frequency of the cooling system in combination with simulation analysis, and matching and determining the cause of the abnormal vibration; an LSTW neural network is used for predicting the abnormal resonance risk, and corresponding countermeasures are taken for the cooling network according to the prediction result; unnecessary vibration caused by error adjustment is avoided, the relation between cooling efficiency and safety is balanced, and unnecessary power loss is reduced.

The utility model discloses a five-axis numerical control machine tool which comprises a base. The five-axis cam rotary table is movably arranged above the base in the X-axis direction and comprises a machining table used for limiting a workpiece to be machined, a horizontal angle adjusting structure and a vertical angle adjusting structure. The workpiece machining assembly comprises a supporting seat fixed to one end of the base in the X-axis direction, a machining support movably arranged on the supporting seat in the Y-axis direction and a workpiece machining unit movably arranged on the machining support in the Z-axis direction, and the workpiece machining unit is located above the machining table; the knife rest is fixed at one end of the base along the Y-axis direction; the disc tool magazine is fixed at the top end of the tool rest; and a machine tool control system. According to the numerical control machine tool, the horizontal angle and the vertical angle of the workpiece to be machined can be adjusted, multiple faces of the workpiece to be machined can be machined, and the numerical control machine tool is compact in structure and small in space size.

The invention belongs to the technical field of wind power tower maintenance, and discloses a climbing anti-corrosion spraying robot based on a wind power tower. Comprising an annular plate and spraying equipment arranged on the annular plate, and a plurality of connecting plates are fixedly connected to the annular plate. By arranging the scraping assembly, the steel wire brush makes contact with the to-be-sprayed position, the steel wire brush conducts scraping back and forth at the to-be-sprayed position, the steel wire brush can conduct scraping cleaning on the to-be-sprayed position and scrape dirt away, by arranging the coating assembly, one rotating roller makes contact with the to-be-sprayed position, the rotating rollers roll back and forth at the to-be-sprayed position, and the to-be-sprayed position is coated with the to-be-sprayed position. The rotating roller can coat the to-be-sprayed position with the rust remover, by arranging the washing and wiping assembly, after the rust remover is coated for a certain time, a water pump is started to spray water to the to-be-sprayed position from a spray head, the rust remover and rust are washed away, then the sponge roller makes contact with the washing position, the sponge roller rolls back and forth, and the to-be-sprayed position is wiped dry.

The invention discloses a submerged-arc welding external welding device for a pressure vessel and an external welding method of the submerged-arc welding external welding device, and belongs to the technical field of submerged-arc welding external welding. Comprising a supporting base; submerged-arc welding equipment is arranged on the side surface of the supporting base; the turnover support is movably arranged on one side of the supporting base; a rotating ring is rotationally connected into the overturning support. A rotating cylinder is movably connected into the rotating ring; a thread clamping assembly is arranged on the rotating cylinder body; the movable support is movably arranged on the other side of the supporting base; a thread fixing assembly is arranged on the movable bracket; the rotation driving mechanism comprises a telescopic supporting assembly and two overturning driving assemblies; the movable support is further provided with a movable overturning assembly. According to the pressure vessel submerged-arc welding external welding device and the external welding method thereof, hoisting movement of the tank body and the tank bottom is facilitated, and when the tank body and the tank bottom are driven to turn over, it can be guaranteed that the tank body and the tank bottom turn over stably.

The utility model discloses a GGD type low-voltage switch cabinet, and relates to the technical field of switch cabinets. The switch cabinet comprises a supporting base and a switch cabinet box body, a supporting frame is arranged at the top of the supporting base, a heat dissipation fan is clamped in the center of the bottom of the supporting frame in a penetrating mode, a plurality of protection air bags are clamped between the supporting base and the supporting frame in a rotating mode, and the switch cabinet box body is clamped between the supporting base and the supporting frame. And a rotary mounting frame is arranged in the center in the switch cabinet box body. According to the utility model, through the arrangement of the supporting base and the switch cabinet box body, the problems that most switch cabinets are cuboids, the internal space is difficult to fully utilize, or the installation, maintenance and operation are relatively inconvenient, the cabinet door which does not influence the operation is generally relatively complex in structure and relatively high in operation difficulty, and the switch cabinets are inevitably collided by the outside when in use are solved.

The invention provides a hybrid vehicle charging power NVH matching method, device and equipment and a medium, and belongs to the technical field of plug-in hybrid new energy vehicle type NVH control. The method comprises the following steps: performing modal identification on a steering wheel and a seat of a real vehicle to obtain a modal identification result under an idling working condition of the vehicle; calibrating a rotating speed operation interval of the engine under an idling operation condition; according to the modal recognition result, the engine rotating speed operation interval is adjusted; sweep frequency is performed on a whole vehicle power point through fixed engine rotating speed excitation to generate an output power curve; acquiring first electricity utilization power of the vehicle equipment; and carrying out power matching according to the first electric power and the output power curve, thereby knowing that the idling charging power of the whole vehicle is optimized from the perspective of NVH performance development, and systematic matching is carried out from three parts of excitation source-transmission path-response. The rotating speed of the engine is adjusted to avoid noise and vibration caused by a resonance band of the whole vehicle, and the effect that vibration and noise are small when the whole vehicle works in an idling charging mode is achieved.

The invention discloses an OLED screen body laser repairing device and a defect repairing system, and belongs to the technical field of OLED flexible display screen processing. The OLED screen body laser repairing device comprises a base, a portal frame, a repairing mechanism and a detection mechanism, the portal frame is fixedly arranged on the base, the repairing mechanism comprises a laser unit, the laser unit is used for repairing an OLED screen body, the detection mechanism is used for collecting defect information on the OLED screen body, and the detection mechanism and the repairing mechanism are arranged on the portal frame in a spaced mode. According to the OLED screen body laser repairing device and the defect repairing system, the portal frame is fixed on the base, so that the defect repairing process of the OLED screen body can be carried out in a mode that the portal frame is fixed, the repairing effect of the OLED screen body is improved, and the repairing efficiency and yield of the OLED screen body are improved.

The invention discloses a laser welding machine, and relates to the technical field of laser welding, the laser welding machine comprises a working table, the upper surface of the working table is symmetrically provided with limiting chutes I, the top of the working table is provided with a steel pipe I, a steel pipe II and a positioning mechanism, and the positioning mechanism is arranged on the top of the working table. A driving mechanism is arranged at the top of the workbench, a buffering mechanism is arranged at the top of the workbench, a first roller and a second roller clamp and abut against the outer wall of a first steel pipe through a positioning mechanism, and the center of the first steel pipe and the center of a second steel pipe can be located on the same horizontal plane all the time; and then the first steel pipe and the second steel pipe are driven by the driving mechanism to get close to each other, the first roller and the second roller are made to rotate, the joint of the first steel pipe and the joint of the second steel pipe are completely attached, the problem that a weld joint is too large or too small is solved, and then the welding quality after the weld joint is welded is improved.

The invention provides a light wallboard gantry cutting device and cutting method, and relates to the technical field of building material on-site machining, the light wallboard gantry cutting device comprises a rack, a three-axis module mechanism, a cutting assembly and a material moving mechanism, one side of the rack in the horizontal direction is open, the rack is provided with a cutting station and a feeding and discharging station, the cutting station is located in the rack, and the feeding and discharging station is located in the rack; the feeding and discharging station is located on the opening side of the machine frame. The three-axis module mechanism is arranged on the machine frame and comprises a movable end. According to the light wallboard gantry cutting device and cutting method, the cutting device is placed near a construction building, the light wallboard is driven to turn over through the material moving mechanism to enter the cutting station, and after feeding, the light wallboard is transversely cut through the three-axis module mechanism and the cutting assembly, so that field width cutting operation is achieved, and the cutting efficiency is improved. And for a scene needing batch cutting, a plurality of arranged light wallboards can be directly placed to be sequentially cut, so that the labor cost is greatly reduced, and the building construction efficiency is improved.

The invention discloses a flat gate valve with a good sealing structure, and relates to the technical field of flat gate valves, the top of a valve body is fixedly connected with a control part, the side face of the valve body is fixedly connected with a filtering part, and the side, away from the filtering part, of the valve body is fixedly connected with an anti-blocking part. When the control component is opened and oil or other substances normally pass through the valve body, the contact mechanism pulls the first spring to move on the guide rod through the impact force of the fluid, and when the control component is closed and the impact force of the fluid passing through the valve body is smaller than the tensile force of the first spring, the contact mechanism pulls the first spring to move on the guide rod through the tensile force of the first spring. And when oil or other substances pass through the gate valve, the oil or other substances are partially deposited and remained on the inner side of the gate valve, so that the phenomenon that the valve body is not tightly sealed is avoided.

The invention belongs to the technical field of transportation devices, and particularly relates to a composite cover plate finished product transferring and stacking device and a transferring and stacking method.The composite cover plate finished product transferring and stacking device comprises a conveyor, a steering engine and a supporting frame are arranged at the tail end of the conveyor, a moving assembly is arranged on the supporting frame, and a lifting driving assembly is arranged on the moving assembly; a clamping assembly is arranged on an output shaft of the lifting driving assembly, the lifting driving assembly drives the clamping assembly to do lifting motion, the clamping assembly comprises a clamping main body, the clamping main body is provided with two side plates which are oppositely arranged, a push-pull driving device is arranged on one side plate, and the push-pull driving device is arranged on the other side plate. An auxiliary rotating plate capable of rotating is arranged on an output shaft of the push-pull driving device, a rotating driving device is arranged on the other side plate, a driving rotating plate is arranged on an output shaft of the rotating driving device, and the driving rotating plate drives the composite cover plate to turn over. According to the device, transferring and stacking of the composite cover plates are achieved in the mode of conveying, guiding, steering, clamping, overturning and stacking.

The invention discloses an aviation main shaft tester for applying an impact load and a continuous centrifugal load and a centrifugal loading method for simulating an engine bearing test in a blade falling state, and relates to the technical field of impact tests. The problems that an existing aviation main shaft bearing testing device can only apply stable loads and cannot apply impact loads and centrifugal loads at the same time are solved. One end of a spindle is connected with a spindle motor driving shaft through a flexible coupler, the spindle is rotationally connected with a base through a first accompanying test bearing and a tested bearing, a centrifugal loading unit is located on the side, close to the spindle motor, of the tested bearing, a permanent magnet is installed at the upper end of a straight rod, a coil assembly and the permanent magnet are arranged correspondingly, and the lower end of the straight rod is connected with a thrust block. The slopes on the two sides of the thrust block make contact with the two centrifugal blocks correspondingly, and the two centrifugal blocks are connected with the main shaft through the two compression springs correspondingly. The method is used for evaluating the reliability of the engine main shaft bearing which bears the instantaneous impact load and the continuous centrifugal load in the simulated rotor blade falling state.

The invention relates to the technical field of furniture machining, in particular to a hardware laser cutting device for furniture machining and a cutting method.The top of the inner wall of the laser cutting device is fixedly connected with a master control frame, and the bottom of the master control frame is fixedly connected with a control mechanism; according to the laser cutting device, the control mechanism, the control frame and the transmission assembly are arranged, the problem that in the laser cutting process, due to movement or vibration of the metal fixing plate, the cutting precision is reduced can be effectively solved, the whole cutting process is high in automation degree, and operation is easy and convenient; the production efficiency and cutting precision of hardware for furniture machining are greatly improved, specifically, when a metal fixing plate is cut through laser, a bidirectional hydraulic push rod is activated firstly, a push-pull block and a push-pull cross rod are pulled to move in a C-shaped sliding groove, then a rotating rod and an L-shaped retracting and expanding rod are made to slide, and a thickness sensing clamping plate is driven to clamp the metal fixing plate.

The invention discloses a PC board surface intelligent flaw recognition device, and relates to the technical field of PC board flaw recognition devices.The PC board surface intelligent flaw recognition device comprises a bottom plate base, a cover plate, an auxiliary cavity, a flaw recognition visual device and a wavy PC board, the cover plate is fixedly connected to the bottom plate base, and the auxiliary cavity and the flaw recognition visual device are both fixedly connected to the cover plate; the wave PC board is located on a conveying belt on the bottom plate seat, and the multi-application type driving assembly, the stable identification auxiliary assembly and the effective identification processing assembly are further included. Through the design of the stable identification auxiliary assembly, it can be effectively guaranteed that the wave PC board is in a state parallel to a defect identification visual device before defect identification is conducted; therefore, the situation that in actual detection, due to the fact that the placing position of the wave PC board is not parallel to the flaw recognition visual device, local irradiation of the to-be-detected wave PC board is insufficient, and the flaw detection accuracy is affected is avoided, the detection accuracy is improved, the misjudgment and missed judgment risks are reduced, and the integrity of image data is effectively guaranteed.

The utility model relates to the technical field of feeding machines, and particularly discloses a novel centrifugal disc feeder which comprises a rack, an inner disc and an outer disc, the outer disc is provided with a containing space for containing external workpieces, the inner disc is arranged in the containing space, the rack is provided with a first driving mechanism and a second driving mechanism, the first driving mechanism is in driving connection with the inner disc, and the second driving mechanism is in driving connection with the outer disc. The inner disc is rotationally connected with the rack through the first driving mechanism, the second driving mechanism is in driving connection with the outer disc, and the outer disc is rotationally connected with the rack through the second driving mechanism; an output outer edge is arranged on the end edge of the outer disc; an external workpiece is placed on the inner disc, the first driving mechanism drives the inner disc to rotate, the workpiece moves to the output outer edge under the action of centrifugal force, and the second driving mechanism drives the outer disc to rotate and sends the workpiece out of the feeder. The inner disc rotates to drive workpieces on the inner disc to do centrifugal motion, the workpieces move to the output outer edge under the action of centrifugal force, noise generated in the feeding process is reduced, meanwhile, high-speed feeding is achieved, and efficiency is improved.

The invention relates to the technical field of protective film cutting, in particular to an automatic cutting device for protective film machining, which comprises a bottom plate and a cutting laser head, a lower sliding plate is movably arranged above the bottom plate, a top block is arranged on the upper side of the lower sliding plate in a lifting manner, and a soaking mechanism is arranged in the top block; and an adsorption positioning mechanism is arranged on the upper side of the top block. Through the soaking mechanism and the follow-up jetting mechanism in the soaking mechanism, when the cutting laser head moves to cut the protective film, water can be continuously jetted to the edge cutting position after cutting, so that the water forms a water film at the edge cutting position, and the water film conducts a large amount of heat generated during cutting of the edge cutting position to the area nearby the protective film; and heat can be prevented from being concentrated at the edge cutting position, so that deformation or fragmentation of the edge cutting position caused by excessive concentration of heat at the edge cutting position can be prevented, the flatness of the edge cutting position of the protective film is further improved, and the cutting quality is improved.

The invention discloses a full-static-pressure ultra-precise double-head spindle, which relates to the technical field of machine tool spindles and comprises a mandrel, a shaft sleeve is fixedly connected to the outer surface of the mandrel, a spindle equipment compartment is rotatably connected to the outer surface of the shaft sleeve, a synchronous pulley is fixedly connected to one side of the outer surface of the shaft sleeve, and a transmission assembly is in transmission connection to the synchronous pulley. The synchronous belt wheel is sleeved with a belt cover, the belt cover is fixedly connected into the main shaft equipment compartment body, and a transmission assembly looseness abnormity early warning mechanism is arranged in the belt cover and can automatically trigger an alarm to remind workers when the transmission assembly is loosened. The situation that the core shaft breaks down due to the fact that the transmission assembly falls off and is broken can be reduced, the maintenance cost of the core shaft is reduced, the service life of the core shaft is prolonged, the situation that vibration and noise are generated when the core shaft works under the abnormal condition of the transmission assembly can be avoided, the stability of the core shaft in the operation process is guaranteed, and the service life of the core shaft is prolonged. Therefore, the product grinding precision and quality of the mandrel are improved.

The utility model discloses a radio frequency identification (RFID) medical consumable cabinet, which relates to the field of medical consumable cabinets and comprises a base, a cabinet body is mounted at the top of the base, a buffer component is arranged above the outer surface of the cabinet body, a rotating component is arranged inside the cabinet body, and the rotating component comprises a motor arranged on the back of the cabinet body and a driven shaft arranged inside the cabinet body through a bearing. Through the arrangement of the rotating assembly, when the motor works, the motor can drive the driving chain wheel to rotate, then drive the chain to rotate and then drive the other driven chain wheel to rotate, meanwhile, the chain drives the connecting plate to move, the connecting plate drives the mounting frame to move and then drives the containing box to move, and therefore lifting of the containing box can be achieved; according to the technical scheme, the placement box at the high position can move downwards, medical staff can conveniently take and place the medical consumables in the placement box at the high position, the taking-out effect of the medical consumables is improved, in this way, it is not needed to stand on a stool or a chair to take and place the medical consumables, and the safety of taking and placing the medical consumables is improved.

The invention discloses air tightness detection equipment, and aims to provide high-efficiency transfer pipette air tightness detection equipment with high automation degree and good detection effect and a control method of the transfer pipette air tightness detection equipment. According to the technical scheme, transfer pipettes are conveyed through a transmission belt and a material placing mechanism on the transmission belt; the transmission belt drives the pipette to complete the detection of the air tightness of the pipette through the air tightness detection device, and meanwhile, the air tightness detection mode is that one end of the pipette to be detected is blocked and the other end of the pipette is subjected to air exhaust, so that the air pressure in the pipette is reduced, and a pressure maintaining link is added after the air exhaust is completed; the air pressure of the transfer pipette is detected in the pressure maintaining process, so that the air tightness of the transfer pipette is conveniently detected, unqualified products can be automatically removed, the overall automation degree is high, the overall processing efficiency is improved by arranging multiple groups of material blocking assemblies and air exhaust assemblies, and the transfer pipette detection device is suitable for the technical field of transfer pipette detection.

The invention discloses a vertical boring device, which belongs to the field of vertical boring devices, and comprises a bed, a vertical moving component, a boring component, a rotating platform, a positioning clamping component and a cooling positioning component, wherein the bed has a workbench, the vertical moving component has a vertical moving platform, the boring component has a rotating end, a boring tool is fixed on the rotating end, the rotating platform has a rotating platform, the positioning clamping component is fixedly connected to the rotating platform, and the cooling positioning component comprises a linear moving module, and the linear moving module has a linear moving platform. The invention enables a workpiece to be turned over and processed by cooperating with the rotating platform, the vertical moving component, the boring component and the positioning clamping component, reduces the length of the tool, improves the structural strength of the tool, avoids vibration caused by an excessively long tool, and ensures the processing speed and processing accuracy of the workpiece.

The invention relates to the technical field of automobile bumper beam assembly manufacturing, in particular to automobile bumper beam assembly automatic welding equipment and a welding method.The automobile bumper beam assembly automatic welding equipment comprises a base, a clamp base is fixedly installed on the upper end face of the base, and welding mechanical arms which are located in front of the clamp base and are in bilateral symmetry are fixedly installed on the upper end face of the base; and a bearing mechanism is arranged on the clamp seat. A comprehensive operation model of bearing, limiting and aligning is adopted for completing rapid welding after integrated clamping and fixing of the automobile bumper beam and the energy absorption box, firstly, the position of the beam is accurately corrected through cooperation of abutting limiting and internal expansion on the upper end face and the lower end face of the beam, and it is guaranteed that the beam and the energy absorption box are accurately aligned; and meanwhile, the overall stability is enhanced through supporting of a trapezoidal structure, vibration and deformation in the welding process are reduced, and deformation caused by thermal stress is avoided, so that uniformity and consistency of welding seams are achieved through mutual cooperation of mechanisms, the overall welding quality and strength are remarkably improved, and the production efficiency of the automobile bumper beam assembly is improved.

The present invention relates to the field of optical lens processing, and relates to a fully automatic optical lens inking machine, comprising: a double-track workbench, both sides of which are provided with electric guide rails; a mobile platform, driven by the electric guide rails; a batch execution unit, arranged on the mobile platform; a fixed rotating mechanism, installed in the middle of the double-track workbench; the batch execution unit comprises: electric telescopic rods, distributed on both sides of the mobile platform; a downward pressing inking mechanism, arranged on the movable rod of the electric telescopic rod on one side, to perform inking operations on the material to be processed; a suction cup frame, on which a plurality of suction nozzles are evenly arranged in series, and installed on the movable rod of the electric telescopic rod on the other side. The present invention uses the suction cup frame on the batch execution unit to move the lenses in batches to the fixed rotating mechanism, waits for the fixed rotating mechanism to fix the lenses and correct the center of the lenses, and then uses the downward pressing inking mechanism to ink the edges of the rotating lenses, thereby achieving the effect of batch inking.

The invention relates to a single-sided polishing method for an 8-inch silicon carbide wafer, which adopts a ceramic disc with the radius less than 8 inches to perform single-sided polishing on the 8-inch silicon carbide wafer, and ensures mechanical balance and efficient polishing in the polishing process by reasonably setting the distance between the wafer and the ceramic disc as well as the distance between the wafer and a polishing disc. And the fluidity and the uniformity of the polishing solution are further enhanced through the optimal design of the polishing cloth and the groove body. The small-size wafer is used as an auxiliary tool, the stability and the machining flexibility of the polishing process are improved, the surface flatness of the polished wafer meets the actual production requirement, meanwhile, the production cost is remarkably reduced, and the equipment utilization rate and the production efficiency are improved. The silicon carbide wafer polishing method is efficient, low in cost and high in flexibility, and has remarkable economic benefits and practical value.

The invention relates to the technical field of road illuminating lamps, and discloses a smart urban road illuminating lamp for urban traffic, which comprises a supporting rod, the bottom of the supporting rod is fixedly connected with a base, the surface of the supporting rod is fixedly connected with an electric push rod, and the end part of the supporting rod is fixedly connected with a lamp holder. And an illuminating lamp is fixedly connected to the inner wall of the lamp holder, and a protective cover is fixedly connected to the end of the supporting rod. By arranging the protection mechanism, firstly, an electric push rod is started to push a right-angle rod to move downwards, when the right-angle rod moves downwards, a merging rod is pulled to move downwards, when the merging rod moves, a driven rod is driven to move in the direction close to each other, and when the driven rod moves, a sliding frame is driven to move in the direction close to each other on the inner wall of a sliding groove plate; when the sliding frame moves, the limiting rods are pushed to move in the direction close to each other and contract, and when the sliding frame moves, the pushing blocks are pushed to move in the direction close to each other.

The utility model relates to the technical field of electromechanical engineering construction, and discloses an on-site monitoring device for electromechanical engineering construction, which comprises a camera stabilizing platform and a movable base, the camera stabilizing platform is positioned above the movable base, and the bottom of the camera stabilizing platform is fixedly connected with three upper hinge seats. And the three upper hinge seats are circumferentially arranged relative to the bottom of the camera stabilizing platform. According to the on-site monitoring device for electromechanical engineering construction, through synchronous expansion or contraction of a sliding roller, a sliding block and a lower hinge seat and rotation of a connecting rod and a linkage rod, accurate control over the height of a camera stabilizing platform is achieved, the height of a camera can be changed, and the situation that a shot picture is blurred due to the fact that supporting legs are adjusted one by one is avoided; when a camera or equipment is fixed on the camera mounting platform, the camera or equipment can be kept stable in the horizontal direction, vibration and shaking caused by inclination or instability due to movement can be reduced, and clearer and more stable shot images can be obtained.

The present invention discloses a switch-on and switch-off drive mechanism for a high-voltage vacuum circuit breaker, which belongs to the technical field of circuit breakers, and comprises a box body and a vacuum chamber, wherein the vacuum chamber is mounted on the box body, and the vacuum chamber is arranged in multiple groups; a wiring port, wherein the wiring port is fixedly mounted on the side surface of the vacuum chamber, and each group of vacuum chambers is equipped with two groups of wiring ports, and the two groups of wiring ports are arranged up and down; a conductive plate, wherein the conductive plate is mounted inside the wiring port, and one end of the conductive plate extends into the vacuum chamber; and a first conductive column, wherein the upper end of the first conductive column is fixedly connected to a conductive plate of a group at the upper end. The present invention can realize that when closing or opening the switch, the initial speed is fast, and the speed becomes slower in the later stage. When performing the closing and opening operation, the initial speed is fast, and the rapid dynamic change can effectively reduce the generation of arcs, and the later speed becomes slower, which can avoid the problem that the excessive closing and opening speed causes excessive impact on the overall structure of the circuit breaker.

The unmanned aerial vehicle is characterized in that four buffer legs are elastically supported on the four side walls of a material bearing seat, two connecting rods are distributed in a cross shape, the two ends of each connecting rod are correspondingly hinged to the two buffer legs, each connecting rod is sleeved with a spring and two buffer sleeves, the spring is arranged between the two buffer sleeves, and the two buffer sleeves are connected with the material bearing seat. Every two of the four buffering arms form a group, the two buffering arms in each group are distributed in a V shape, one ends of the buffering arms are hinged to the material bearing base, and the other ends of the buffering arms are hinged to the two buffering sleeves on the same connecting rod. When the unmanned aerial vehicle lands on an uneven road surface, the buffer structure can absorb and weaken impact from the road surface. The springs can be compressed when the buffer legs meet the protrusions, impact energy is stored as elastic potential energy, and vibration is prevented from being directly transmitted to the machine body.

The invention relates to the technical field of thermal protectors, in particular to a thermal protector with a protection structure, which comprises a thermal protector body and two wires, the thermal protector body is sleeved with a shell, the front end of the shell is provided with a front cover, the front cover is provided with a pre-tightening opening, and the section of the pre-tightening opening gradually retracts from the inside of the front cover to the outside of the front cover. The outer portions of the wires are fixedly sleeved with pre-tightening parts matched with the inner shapes of the pre-tightening openings, when the wires move towards the outer portion of the front cover, the pre-tightening parts move along with the wires and abut against the inner walls of the pre-tightening openings, and a first clamping block capable of clamping the outer portions of the two wires at the same time is arranged at the center of the side, away from the pre-tightening openings, of the inner portion of the front cover. A linkage mechanism is arranged between the first clamping blocks and the pre-tightening part, when the pre-tightening part moves outwards along with the wire, the linkage mechanism drives the two first clamping blocks to clamp the outer portion of the corresponding wire at the same time, and the stability of the thermal protector body in use is further improved through mutual cooperation of the pre-tightening part, the first clamping blocks and the linkage mechanism.