771results about How to "Avoid jitter" patented technology

The invention relates to the technical field of wafer cleaning devices, and discloses a megasonic semiconductor wafer cleaning device which comprises a megasonic machine, a cleaning box and a semiconductor wafer, the cleaning box is arranged on the outer side of the megasonic machine, and the semiconductor wafer is arranged above the cleaning box. A rotating assembly and a shaking assembly which are used for assisting in cleaning semiconductor wafers are arranged above the cleaning box, a fixing assembly which is used for fixing the semiconductor wafers of different sizes is arranged above the cleaning box, and through the arrangement of the rotating assembly and the shaking assembly, the surfaces of the wafers can be covered more comprehensively in a composite motion mode, so that the cleaning efficiency is improved. The transmission of the worm gear rod and the worm has a self-locking characteristic, so that reverse rotation and shaking in the movement process can be effectively prevented, the rotation stability is ensured, wafer damage or non-uniform cleaning caused by unstable movement when a traditional device meets complex movement requirements is avoided, mutual interference generated among different driving mechanisms is reduced, and the service life of the device is prolonged. And the reliability and the compactness of the device are improved.

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 utility model provides pole piece processing equipment which comprises a first baffle, a second baffle and a third baffle, the first baffle is located above a pole piece so as to form a first gas flow channel between the first baffle and the pole piece, and the second baffle and the third baffle are located above the pole piece and arranged at an interval so as to form a second gas flow channel between the second baffle and the pole piece. A second gas flow channel is formed between the second baffle and the third baffle, and an outlet of the first gas flow channel is adjacent to an inlet of the second gas flow channel in the first direction; the first blowing mechanism is arranged at an inlet of the first gas flow channel; the dust collection mechanism is arranged at an outlet of the second gas flow channel; and the laser is arranged above the pole piece and is aligned with a gap between the outlet of the first gas flow channel and the inlet of the second gas flow channel in the second direction. The pole piece processing equipment has the technical effects of high processing efficiency and dust reduction, and also can prevent the pole piece from shaking in the processing process.

The invention relates to the technical field of mask product production, in particular to an anti-aging and firming mask and a preparation method thereof.The anti-aging and firming mask is prepared from, by mass, 5-10 parts of seaweed extract, 3-7 parts of collagen peptide, 2-6 parts of sodium hyaluronate, 4-9 parts of peptide compound and 1-4 parts of vitamin E ester. The anti-aging compact facial mask is prepared through the preparation device of the anti-aging compact facial mask, a discharging roller and a collecting roller in the collecting and tightening structure are matched with a pressing roller, in the facial mask cutting process, the discharging roller conducts discharging, the collecting roller can rapidly collect cut facial mask belt waste and collect the cut facial mask belt waste in a coiled mode, the recovery efficiency of the facial mask preparation waste is improved, and the recovery efficiency of the facial mask preparation waste is improved. And arrangement of a production environment and resource recycling are facilitated.

The invention relates to the technical field of automobile body welding clamps, in particular to an automobile body welding clamp which comprises a welding support and further comprises a welding clamp seat, the welding clamp seat is fixedly connected with the welding support, a plurality of L-shaped moving seats are arranged on the welding clamp seat, and each L-shaped moving seat is provided with a clamping part; the clamping control mechanism comprises a clamping driving assembly and a detection compensation assembly; according to the automobile body welding fixture, when a plurality of fixtures are used for fixing an automobile body, the use condition of the fixture can be monitored before welding operation and in the welding process, and the clamping force is automatically compensated when a certain fixture has a controllable fault, so that the situation that the automobile body shakes or shakes in the welding process is avoided, and the welding quality of the automobile body is improved. And the stability of the vehicle body is guaranteed, and the welding quality and effect are improved.

The invention relates to the technical field of concrete member detection equipment, and discloses a concrete member impact resistance detection device which comprises a base, a top plate is mounted at the top of the base through a mounting side plate, a lifting shell is arranged at the top of the base, and an impact component is arranged at the bottom end of the lifting shell. A plurality of placing side plates are arranged on the outer walls of the two sides of the lifting shell; a lifting mechanism is arranged on the top of the base and used for driving the lifting shell to ascend and descend. A placing frame is arranged on the side, close to the lifting shell, of the mounting side plate, and a feeding mechanism is arranged on the side face of the mounting side plate and used for feeding balancing weights on the placing frame to the placing side plate. According to the invention, the friction force between the balancing weight and the placement side plate is increased through the inflation and expansion of the anti-skid air bag, the shaking of the balancing weight in the impact process is effectively avoided, and the reliability and consistency of the test result are ensured.

The invention belongs to the technical field of conveying, and particularly relates to a flexible high-airtightness feeding system for a graphitization production line and a working method. The invention provides a flexible high-air-tightness feeding system for a graphitization production line, which comprises a mixing device arranged on a support frame and provided with a discharging pipe at the bottom; the discharging assembly is arranged on the supporting frame in a lifting mode and located below the discharging pipe; the discharging assembly comprises a plurality of limiting pieces. After the discharging assembly moves upwards to be arranged on the outer wall of the discharging pipe in a sleeving mode, the limiting pieces are pushed by the discharging pipe to deform outwards, and the outer walls of the limiting pieces abut against the outer wall of the discharging pipe so as to clamp the discharging pipe and prevent the discharging pipe from shaking. Through cooperation of the discharging assembly and the discharging pipe, when the discharging assembly and the discharging pipe are in butt joint, the discharging assembly is arranged on the outer wall of the discharging pipe in a sleeving mode, the limiting pieces are suitable for clamping and limiting the discharging pipe from the periphery, the situation that the discharging pipe shakes during discharging is prevented, and the air tightness between the discharging assembly and the discharging pipe is improved.

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 invention provides a fixed horizontal tail type fly-by-wire aircraft leveling control law design method, which comprises the following steps of: when an aircraft meets a condition of entering a leveling control law, recording a flight control law integral channel instruction ELNMINT at a triggering moment; generating an elevator control command component ELFLAREFWD through a forward command shaping module based on the joystick displacement signal; the method comprises the following steps: introducing an integral channel instruction ELNMINT into a leveling control law, and obtaining a bias instruction component ELFLAREOFFSET under the leveling control law after the integral channel instruction ELNMINT passes through an instruction amplitude limiting module; subtracting the bias instruction ELFLAREOFFSET from the integral channel instruction ELNMINT to obtain an instruction initial value ELFLAREFADER0 which needs to be faded during instruction transition; after the instruction initial value ELFLAREFADER 0 passes through a desalting device module, a real-time control surface control instruction component ELFLAREFADER is formed; and an elevator control instruction ELCMD under the leveling control law is obtained. According to the method, the switching transient state can be reduced by introducing the flight control law integral channel instruction component into the leveling control law, and the method has remarkable advantages in the aspects of improving the flight safety, optimizing the flight quality, enhancing the system flexibility, improving the automation level and the like.

The invention provides an unmanned underwater vehicle trajectory tracking control system based on preset time and performance, and aims to improve trajectory tracking precision and stability in underwater operation tasks. The method comprises the following steps: establishing an unmanned underwater vehicle mathematical model; designing a preset time preset performance function, and introducing an adjustable function changing along with time to enable the boundary function to have a smooth characteristic in a convergence process; a time-varying gain auxiliary system is adopted to process an input saturation problem; designing a disturbance observer to realize rapid attenuation of disturbance, and enhancing the robustness of the system by introducing a residual adjustment function based on a smooth nonlinear model; and finally, integrating the interference observer and an auxiliary system to deduce a trajectory tracking scheme. The result shows that the longitudinal speed fluctuation is reduced by 69.2%, and the swaying speed fluctuation is reduced by 32.7%; the north position tracking performance is improved by 30.8%, the east position tracking performance is improved by 16.7%, the speed fluctuation is effectively reduced, and the tracking performance, the system stability and the anti-interference capability are improved.

The invention relates to the technical field of inspection robots, in particular to a rail type inspection robot capable of automatically adjusting clamping force, which comprises a camera and an I-shaped rail, a mounting plate is arranged below the I-shaped rail, and two walking devices are rotationally arranged on the upper side of the mounting plate; and the walking device comprises a bottom plate rotationally connected to one end of the upper side of the mounting plate, two side plates are fixed to the two sides of the bottom plate, and supporting shafts are rotationally connected to the upper ends of the two side plates in a penetrating mode. Through the guide mechanisms on the two sides of the walking device, when the walking device moves, the multiple guide wheels of the guide mechanisms on the two sides roll along the side face of the I-shaped rail, the multiple guide wheels of the two guide mechanisms are attached to the surfaces of the two sides of the I-shaped rail correspondingly, and transverse supporting force is provided for the walking device during moving; when the walking device moves along the linear section of the I-shaped rail, the walking device can be prevented from generating transverse deviation, and the moving stability of the walking device is improved.

The invention relates to a vehicle control method and device, a vehicle, a storage medium and a program product. In response to slipping of at least one wheel of the vehicle, driving parameters of the vehicle are obtained; for each target wheel which slips, the initial driving torque, determined by a driving anti-skid system of the vehicle, of the target wheel is obtained; correcting the initial driving torque according to the driving parameters to obtain a target driving torque; and according to the target driving torque, driving anti-skid control is conducted on the target wheel.

The invention relates to the technical field of blood extraction, and discloses blood extraction equipment for preliminary auxiliary examination of liver cancer, which comprises a base, an arc-shaped cushion fixedly arranged at the top of the base, a cavity formed in the bottom of the base, two fixing belts movably arranged at the top of the base and symmetrically distributed, and a fixing unit arranged on the base, the fixing unit comprises a winding component and a buffering component which are arranged on the base. According to the blood extraction equipment for the preliminary auxiliary examination of the liver cancer, by rotating a rocker, driving a rotating disc and a winding shaft to rotate, driving two winding rollers to rotate, winding a fixing belt on the winding rollers, tightening the fixing belt and tightening the arm of a patient, the situation that the patient swings and shakes during blood extraction, and the blood extraction difficulty of medical staff is increased is avoided; meanwhile, multiple times of blood drawing may increase pain and discomfort of a patient and increase safety risks faced by medical staff, for example, the patient is accidentally injured by a needle, and threats are caused to the body health of the medical staff.

The invention relates to the technical field of cervix uteri cell collection, in particular to a cervix uteri cell self-collection device which comprises a plurality of cotton swabs. The anti-shake calibration mechanism is arranged at the tail end of the sickbed and located in the center of the tail end, the propelling mechanism is arranged in the anti-shake calibration mechanism, the sampling movement assisting mechanism is arranged on the propelling mechanism, the sample liquid extraction mechanism is arranged in the sampling movement assisting mechanism, and the multiple cotton swabs are evenly distributed outside the sample liquid extraction mechanism in a circumferential shape. The sampling assisting mechanism is arranged, the multiple cotton swabs which are evenly distributed in the circumferential direction are arranged in the sampling assisting mechanism, and after the sampling assisting mechanism controls the multiple cotton swabs which are evenly distributed to stretch into a sampling part, the multiple cotton swabs which rotate slowly can evenly wipe the affected part; at the moment, a large number of to-be-detected target objects can be obtained from the affected part through one-time collection operation, so that sufficient to-be-detected cell samples can be obtained without manually controlling a collector to wipe the affected part, and the accuracy of subsequent comparison detection is improved.

The utility model relates to an anti-deviation strip steel unwinding device, and belongs to the technical field of strip steel machining. The flattening device mainly comprises a rack, a rotating shaft, a driving mechanism, an abutting mechanism, a supporting frame, a support, a flattening mechanism and a limiting mechanism. A strip steel coil is installed on the rotating shaft through the abutting mechanism, an inner ejector block abuts against a winding drum of the strip steel coil, strip steel is limited through a baffle and a limiting rod, shaking of the strip steel in the unwinding process is reduced, and therefore the deviation possibility of the strip steel coil is reduced, the driving mechanism drives the rotating shaft to rotate, then the strip steel is driven to be unwound, and the strip steel penetrates through the flattening mechanism and the limiting mechanism. The radial deviation range and the axial deviation range of the strip steel are limited, so that the strip steel is gradually unwound, shaking of the strip steel in the unwinding process can be effectively avoided, then stable conveying of the strip steel is ensured, and deviation and disorder of strip steel unwinding are avoided.

The invention discloses a pure electric vehicle torque abnormity monitoring method and system, and the method comprises the steps: obtaining vehicle parameters in real time, determining a vehicle driving mode, determining a required torque according to the vehicle parameters and the driving mode, and determining a redundant torque according to the vehicle parameters in a vehicle driving process; and performing torque abnormity monitoring based on the demand torque and the redundant torque, and determining a final request torque. Different cores in the controller are used for calculating the required torque and the redundant torque respectively, torque abnormity monitoring is carried out, power output can be interrupted in the fault state that the calculated torque is too large abnormally, and the risk caused by further unexpected acceleration of the vehicle is avoided.

The utility model discloses an unwinding device which comprises a supporting base and a rotating sleeve arranged on the supporting base in a penetrating mode through a bearing, an unwinding rotating disc is fixedly arranged on the rotating sleeve, a plurality of sliding grooves are evenly formed in the outer surface of the unwinding rotating disc in the axial direction, and a fixing block and a sliding block are installed in the rotating sleeve in a front-back mode. The fixing block and the sliding block penetrate through the sliding grooves to extend out of supports corresponding to the sliding grooves respectively, the two supports extending out of each sliding groove are connected with the bottom of an arc-shaped supporting piece through connecting rods respectively, and a sliding block driving rod is arranged in the rotating sleeve in a penetrating mode. Two installation supporting columns are symmetrically arranged on the two sides of the front end of the rotating sleeve correspondingly, and a supporting strip is rotatably connected to the upper portion of the installation supporting column on one side. The unwinding device is ingenious in structure, coil stock can be fixed and prevented from shaking in the unwinding process, unwinding stability is guaranteed, and preparation is made for high-quality production at the rear end.

The invention relates to the technical field of optical networks, and provides a metropolitan area-access all-optical convergence network system based on a digital subcarrier multiplexing technology. The system comprises a digital subcarrier-based continuous signal generation module in a metropolitan area node, a digital subcarrier-based burst signal generation module in an access network optical network unit, and a digital subcarrier beam splitting / combining module in a metropolitan area-access all-optical fusion node, the digital subcarrier-based west / east continuous signal receiving and processing module is arranged in the metropolitan area node; and the burst signal receiving and processing module is arranged in the access network optical network unit. All-optical fusion is achieved in a metropolitan area network and an access network system through the digital subcarrier multiplexing technology, delay and jitter caused by optical-electric-optical conversion can be effectively avoided, and precious wavelength resources are saved. In addition, different subcarriers are endowed with different functions, so that not only is bidirectional high-speed transmission realized, but also the flexibility of the network architecture is greatly improved.

The invention relates to a land turning-over method and system for a large asymmetric steel truss girder, and the method comprises the steps that at least three turning-over devices are arranged within the span range of a portal crane, and the multiple turning-over devices are located on the same straight line; the gravity center of the large-scale asymmetric steel truss girder is obtained, the large-scale asymmetric steel truss girder is tightly placed on the supporting pieces of the multiple turning-over devices, and the vertical line of the gravity center of the large-scale asymmetric steel truss girder and the straight line where the multiple turning-over devices are located is located between any two adjacent turning-over devices; a crane of the portal crane is moved to the position above a lifting lug of the large asymmetric steel truss girder, and the working end of the crane is connected with the lifting lug through a lifting rope; and overturning the large asymmetric steel truss girder to a critical state through the crane, and hoisting the large asymmetric steel truss girder. According to the land turning-over method and system for the large asymmetric steel truss girder, the construction efficiency can be improved, and the construction risk can be reduced.

The utility model provides a low-torque pan-tilt camera device which comprises a support, a spherical groove corresponding to a spherical assembly is arranged on the support, the spherical assembly is located on the inner side of the spherical groove, a plurality of tooth grooves are formed in the outer side wall of the spherical assembly, and a plurality of clamping grooves are formed between the tooth grooves and the outer side wall of the spherical assembly. An arc-shaped rack for driving the spherical assembly to rotate is formed; a gear is fixedly arranged at the power output end of the motor, and the gear is meshed with the arc-shaped rack; the camera lens is located on the inner side of the spherical assembly. The utility model has the beneficial effects that the transmission ratio is small, that is, the output rotating speed is high, the torque is small, the shaking of the pan-tilt camera lens in the rotating process is avoided, and the transmission mechanism is suitable for high-speed and small-torque transmission application scenes.

The invention discloses an intelligent dynamic load balancing method and system based on Clico-VPP. The method comprises the following steps: acquiring a load state index of a back-end service pod; according to the load state index and a service capability coefficient corresponding to the back-end service pod, calculating a dynamic traffic allocation weight of the back-end service pod through a weighted calculation model; based on a dynamic threshold synchronization strategy, synchronizing the state of a first hash ring located in a control plane to a second hash ring located in a forwarding plane; and based on the second hash ring, determining a target pod for the input data stream through consistency lookup. A double-loop decoupling architecture is provided, hash rings of a control plane and a forwarding plane are separated, a synchronization strategy is determined through a dynamic threshold value, decision intelligence and forwarding stability are both considered, and jitter is avoided; meanwhile, a dynamic weight-driven consistent Hash algorithm is adopted, a real-time load index and Pod service capability are fused to calculate a dynamic weight, and the dynamic weight is mapped into the number of virtual nodes, so that intelligent scheduling based on capability and maximum maintenance of connection during capacity expansion and contraction are realized.

The invention discloses a cardiology department interventional therapy auxiliary supporting arm, and relates to the cardiology department interventional therapy auxiliary technical field, the cardiology department interventional therapy auxiliary supporting arm comprises a main body mechanism, the main body mechanism comprises a base, the upper surface of the base is fixedly provided with a supporting arm body, the upper surface of the supporting arm body is fixedly provided with a supporting frame, and the bottom surface of the base is fixedly provided with four universal wheels; an intervention taking-out mechanism is arranged above the supporting frame. The interventional taking-out mechanism comprises a clamping movable unit, the clamping movable unit is located above the supporting frame, the clamping movable unit is used for intervening and taking out a catheter, and according to the auxiliary supporting arm for interventional therapy in the department of cardiology, by arranging the clamping movable unit of the interventional taking-out mechanism, the catheter can be automatically clamped and pushed and outwards clamped and pulled out; the catheter can be automatically intervened and taken out, so that a person does not need to continuously intervene or take out the catheter, arm ache caused by continuous intervention or pulling out of the person is prevented, and the operation difficulty of medical personnel can be reduced.

The utility model provides a lifting mechanism of an inverted microscope condenser, which comprises a microscope main body, and a guide rail mechanism is arranged above the microscope main body; the lifting mechanism is arranged at the bottom of the guide rail mechanism; the collecting lens is mounted on the guide rail mechanism in a sliding manner through a collecting lens fixing bracket; the guide rail mechanism comprises a high-precision ball screw with a rotating gear at the bottom; the linear moving pairs are arranged on the left side and the right side of the high-precision ball screw; the lifting mechanism comprises a self-locking worm and gear pair meshed with the rotating gear; the rolling bearing is connected with the outer side of the self-locking worm and gear pair; the lifting rotating shaft is connected with the outer side of the rolling bearing; the lifting knob is connected with the outer side of the lifting rotating shaft. The device is easy and convenient to operate and high in efficiency, and the collecting lens can be adjusted to any height.

The invention discloses a method, device and equipment for avoiding engine flameout and a storage medium, and the method comprises the steps that the clamping stagnation state of a mixing valve is judged according to the current target opening degree and the actual opening degree; according to the clamping stagnation state of the mixing valve, PID control calculation is conducted on the opening degree error between the current target opening degree and the actual opening degree; and when it is judged that the mixing valve is opened in the stable clamping stagnation state, an integral item of PID control over the opening degree error is reset so as to avoid engine flameout. The method aims at solving the problems that in the prior art, due to the fact that a mixing valve of a low-pressure EGR system forms duty ratio overshoot when the mixing valve is opened due to clamping stagnation, the mixing valve is fully closed, external air does not enter an air cylinder, and an engine flames out or shakes, the method can effectively recognize that the mixing valve enters the clamping stagnation opening state from the clamping stagnation state, and the working efficiency of the low-pressure EGR system is improved. PID control adjustment is carried out on the mixing valve, and the problems of engine flameout and jittering caused by overshoot of the mixing valve are solved.

The utility model relates to an ophthalmology instrument experiment animal platform which comprises an ophthalmology equipment adaptation frame and an animal platform body. The ophthalmology equipment adaptive frame comprises a column clamp, an adjusting frame and a base, the column clamp is used for clamping an ophthalmology equipment column, and the base is connected to the bottom of the adjusting frame and used for being supported on an ophthalmology equipment neck support; the animal platform is installed on the adjusting frame, the platform surface of the animal platform is located in the observation view field of the ophthalmology equipment in front of the adjusting frame, and an experimental animal fixing device is arranged on the animal platform; the experimental animal fixing device comprises an animal body fixing structure, a tooth fixing structure and a skull fixing structure to form a three-stage fixing system, so that the experimental animal is fixed and the eyes are still. The ophthalmological instrument experimental animal platform can be matched with common instruments for ophthalmological examination, experimental animals can be conveniently fixed, animal eyeballs are prevented from shaking and the like, the observation angle and distance of the eyeballs of the experimental animals can be accurately adjusted, the consistency of ophthalmological examination operation is guaranteed, and experimental animal imaging scientific research data are accurate.

The invention discloses a voice interaction teaching system integrated with a visual tactile sensor and a braille recognition algorithm, which comprises the steps that a braille image is acquired through a tactile sensing module, an input instruction is acquired through a voice module to carry out mode adjustment on a braille translation module, and the adjustment modes comprise a teaching mode and a translation mode; in the teaching mode, the braille image is preprocessed through the braille translation module to obtain dot information, the dot information is recognized through the braille recognition algorithm to obtain character information, and the character information is broadcasted through the voice module. Whether the braille recognition algorithm is used for detection or not is judged through a frame difference algorithm and an inter-frame minimum circle center distance algorithm when the braille recognition algorithm is used; in the translation mode, the character information is detected through the four columns of threshold lines according to the dot information, the detected character information is obtained, and the detected character information is broadcasted through the voice module.

The invention discloses an insulator live detection device and a using method thereof, and relates to the field of insulator live detection devices.The insulator live detection device comprises an insulating rod, a screw is arranged in the insulating rod, a sliding groove is formed in the inner wall of the screw, a sliding column is arranged in the screw, and the outer side of the sliding column is rotationally connected with multiple sets of rolling wheels; according to the insulating rod fixing device, the sliding column rotates to drive the screw rod to rotate through the rolling wheel and the sliding groove, the bottom of the screw rod enters the ground to be matched with opening of the rotating plate, and therefore the insulating rod is fixed; when the insulating rod is folded, a worker does not need to hold the insulating rod, the toothed bar rotates to drive the rotating block to rotate through the toothed groove, so that the rotating block is unfolded from a folded state, the rotating position of the rotating block can be easily adjusted, and the position of the rotating block can also be adjusted when the insulating rod is placed on an inclined terrain.

The utility model provides a mechanical arm tail end jittering suppression device, belongs to the technical field of mechanical arm tail end jittering suppression devices, and aims to solve the problems that when a displacement compensator is adopted to control jittering of the tail end of a simple mechanical arm, economy is not achieved, the process of data acquisition and parameter debugging is tedious, manpower is wasted, and the working efficiency is high. Comprising an anti-rust shell, a single-shaft mechanical arm, a brushless motor, a first holder, a second holder, a restraining mechanism and a triggering mechanism. The single-shaft mechanical arm is arranged on the side face of the rust-proof shell. The brushless motor is fixedly connected to the interior of the rust-proof shell; the first retainer is fixedly connected to the interior of the rust-proof shell; the second retainer is fixedly connected to the interior of the rust-proof shell; the inhibiting mechanism is arranged in the rust-proof shell; and the trigger mechanism is arranged in the rust-proof shell. The single-shaft mechanical arm tail end vibration suppression device has the advantages that vibration suppression of the single-shaft mechanical arm tail end is completed through a simple mechanical device, economical efficiency and reliability are improved, and operation steps are simplified.

The invention relates to the technical field of steel structure welding, in particular to a green building steel structure welding positioning device which comprises a first positioning seat, a control panel is mounted on the right side surface of the first positioning seat, a first sliding groove is formed in the left side of the first positioning seat, and an operation table is arranged in the first sliding groove. A second positioning seat is arranged on the left side of the operation table, the structure of the second positioning seat is the same as that of the first positioning seat, a second sliding groove is formed in the back face of the second positioning seat, the first sliding groove and the second sliding groove are installed on the operation table in a sliding mode, and a side block is installed in the first positioning seat; and a first motor is mounted on the right side surface of the side block. According to the polishing device, the polishing disc is always attached to the two sets of steel pipes when the welding positions of the two sets of steel pipes are polished in a reciprocating mode through the polishing disc, so that chippings generated during polishing cannot fall into the steel pipes, the chippings in the steel pipes do not need to be independently cleaned subsequently, and the overall cleaning effect is good.

The invention relates to the field of unmanned aerial vehicle monitoring, and discloses an unmanned aerial vehicle intelligent high and cold ecological monitoring device which comprises a vehicle body, unmanned aerial vehicle arms, undercarriages, propeller blades, motors, cameras, heating plates and rubber non-slip mats. A top shell is installed at the top of the vehicle body, the lower portion of the top shell is connected with an unmanned aerial vehicle arm through a side frame, the unmanned aerial vehicle arm is of a hollow structure, and a cable channel is formed in the unmanned aerial vehicle arm and used for containing a cable to connect a motor and a motor. An undercarriage is fixed to the unmanned aerial vehicle arm, a shell is installed at the tail end of the undercarriage, propeller blades are connected with a motor through the shell, and the motor is installed below the shell and used for driving the propeller blades. Through flexible adjustment of the angles of the propeller blades, the inclination angles of the blades can be automatically adjusted according to the real-time wind speed and airflow changes, it is ensured that in the high and cold environment with strong wind or unstable airflow, the influence of wind on the flight stability of the unmanned aerial vehicle is effectively reduced, and the wind resistance of the unmanned aerial vehicle under the severe weather condition is improved.