38results about How to "Precisely control the rotation angle" patented technology

The utility model relates to the technical field of welding quality detection, in particular to an integrated rapid welding detection device for pore analysis and automatic interpretation, which comprises a detection table, a controller, a detection mechanism and an adjusting disc, an adjusting plate is arranged between the adjusting disc and the detection table, a rotating mechanism is arranged between the adjusting plate and the adjusting disc, and the rotating mechanism is connected with the detection table. A displacement mechanism is arranged between the adjusting plate and the detection table, a fastening plate is arranged on the adjusting disc, a T-shaped groove is formed in one side of the fastening plate, an iron plate is arranged on the T-shaped groove, a T-shaped block is arranged on the T-shaped groove, a clamping assembly is arranged at one end of the T-shaped block, an electromagnet is embedded into the other end of the T-shaped block, and a clamping assembly is arranged on the other end of the clamping assembly. According to the structure, the adjusting disc can rotate by 360 degrees in the detection process through the rotating mechanism, it is ensured that each angle of the welding position can be comprehensively detected, and detection blind areas possibly existing in a traditional method are avoided.

The application belongs to the field of coating detection, and specifically discloses a detection equipment for coating production, which comprises a sampling mechanism, wherein the sampling mechanism is connected with a base, a stirring tank is installed at the upper end of the base, the stirring tank is communicated with the sampling mechanism, the sampling mechanism comprises a stepping motor, the stepping motor is connected with a glass frame, a spectrometer is installed at one end of the glass frame, the output end of the stepping motor is in transmission connection with a lead screw, the lead screw is in threaded connection with a sliding rod, the sliding rod is in sliding connection with the glass frame at both ends, the sliding rod is connected with three sample cups which are arranged at equal intervals at the top of the sliding rod, and the sliding rod is in contact with a quantitative control mechanism. The stepping motor is used for driving the sliding rod to translate and trigger the quantitative control mechanism, the multi-angle test pieces arranged in an interlaced mode are combined with the spectrometer, the full-process automatic detection from layered sampling, sedimentation observation to coating optical performance analysis is realized, and the problems of sample cross contamination and low detection efficiency in the prior art are solved.

The application discloses an axial flux motor and a stepping control method thereof, and adopts a stepping control mode to realize accurate control of the motor. By acquiring operation parameters of the axial flux motor, initial angle and stepping angle of the axial flux motor are determined, and then the energization period of the axial flux motor is determined, a stator excitation waveform image is drawn, three-phase current for controlling the axial flux motor is generated, and the PWL function is used to realize stepping rotation of the axial flux motor. The technical scheme has the advantages of high precision, the rotation angle and speed of the axial flux motor are accurately controlled by controlling the number and frequency of current pulses, high-precision position positioning and motion control are realized, and the axial flux motor is suitable for application occasions such as communication and data transmission gimbals as a driving motor.

The utility model provides a torsion spring forced twisting device for an automobile seat, which belongs to the technical field of automobile accessory production equipment and comprises a machine table, a mounting seat for placing a spring is arranged in the machine table, a driving structure is arranged at the bottom of the machine table, and an output end of the driving structure is fixedly connected with the mounting seat to drive the mounting seat to rotate. And a first clamping position is arranged on the mounting seat. An auxiliary locking structure is further arranged on the machine table, and a second clamping position is arranged on the auxiliary locking structure. The spring is arranged in an annular mode and provided with an inner coiling end and an outer extending end, the inner coiling end is connected with the first clamping position in a clamped mode, and the outer extending end is connected with the second clamping position in a clamped mode. A torque sensor is arranged below the machine table, one end of the torque sensor is connected with the output end of the driving structure, and the other opposite end of the torque sensor is connected with a spring on the installation base. The device can accurately monitor the torque in the strong torsion process of the torsion spring through the torque sensor, so that the strong torsion effect of the torsion spring is improved, and the quality of the torsion spring is ensured.

This utility model discloses a multi-station synchronous clamping device for CNC machining, including a base. A pusher roller is fixedly connected to the top of the base. A drive motor is installed inside the base. The output shaft of the drive motor is fixedly connected to a threaded rod via a coupling. A limit rail is threadedly connected to the outer wall of the threaded rod. A base is slidably mounted on the top of the limit rail. A clamping assembly is mounted on the top of the base. An angle adjustment assembly is mounted on the top of the clamping assembly. This utility model provides a multi-station synchronous clamping device for CNC machining. By adjusting the steering shaft in conjunction with the pointer on the bushing and the angle scale line on the steering shaft, the rotation angle of the steering clamping block can be precisely controlled to meet the machining requirements of different workpiece angles. It eliminates the need for re-disassembly and clamping, making operation convenient. After adjustment, the adjusting steering shaft can be fixed by locking bolts to ensure the stability of the angle during machining.

This utility model relates to the field of water spraying devices, and more particularly to a high-pressure fine water mist spraying device, including a water tank; it also includes a cleaning seat and a nozzle. A filter screen is fixedly connected inside the water tank, and a cleaning seat is provided between the water tank and the filter screen. A water pump is fixedly connected to the upper end of the inner wall of the water tank and inside the filter screen. A support base and a controller are fixedly connected to the upper end of the water tank, and an internal toothed ring is rotatably connected to the inner wall of the support base. Through the use of the cleaning seat, external water is filtered through the filter screen, effectively intercepting impurities in the liquid, preventing nozzle clogging, and improving atomization efficiency. The water pump pumps the filtered water in the water tank to the distribution pipe, and the water is sprayed out by the nozzle for water spraying. After a period of use, the cleaning seat moves up and down to thoroughly remove the sediment on the outer wall of the filter screen and the inner wall of the water tank. Regular cleaning is performed, which has a high degree of automation, improves the cleaning effect and efficiency, reduces the maintenance frequency, and extends the service life of the nozzle.

The utility model discloses a numerical control bending device for an environment-friendly ventilating duct, which relates to the technical field of environment-friendly ventilating ducts and comprises a housing, supporting legs, a sliding chute, a motor, a lead screw, a first bearing, a movable plate, a fixed seat, a clamping sleeve, a guide rod, a limiting block, a second bearing, a screw rod, a hand wheel, a mounting platform, a reinforcing rib, a bending component and the like. The servo motor is adopted to drive the lead screw, the rotating angle and speed of the lead screw can be accurately controlled, and then the moving distance and speed of the moving plate are accurately controlled. In this way, in the bending process of the ventilation pipeline, control over the bending position and angle is more accurate, the problem that it is difficult for traditional manual bending or simple mechanical bending equipment to guarantee the consistency of the bending precision is effectively solved, the bending quality of the ventilation pipeline is greatly improved, it is guaranteed that the product is tightly connected and good in sealing performance when installed and used, and the product quality is improved. The overall performance of the ventilation system is improved.

This utility model relates to a fixing fixture for machining starter stators, belonging to the field of starter stator machining technology. It includes a fixture base and a positioning table, with fixture components mounted on the positioning table. The positioning table includes a frustum mounted on the fixture base. This fixing fixture for machining starter stators has three positioning fixtures evenly distributed circumferentially. Through synchronous transmission via gears and racks, it ensures that the center of the stator base coincides with the rotation center of the frustum. An M-shaped rubber pad accommodates minor deformations on the stator base surface, preventing indentations or damage caused by rigid clamping. A rotary cylinder enables rapid clamping or releasing. A dual-brake motor, in conjunction with a control system, precisely controls the rotation angle of the frustum, reducing manual adjustment time. The fixture components and drive components are installed independently, allowing for adaptation to different stator base specifications by replacing the positioning fixtures, thus offering strong versatility. The motor has a built-in brake function, locking the frustum position during power failure to prevent accidental rotation during machining, improving safety.

The utility model discloses a kind of split type magnetic pole reinforcing key mounting structures, it is related to magnetic pole reinforcing key installation field, including support frame, the upper end of the support frame is rotatably connected with rotating plate, the upper end of the rotating plate is equipped with placing groove, the outside of the placing groove is provided with multiple installation grooves equipped in the upper end of rotating plate, the inside of multiple installation grooves is slidably connected with clamping block, the lower end of the clamping block is provided with driving assembly, a kind of split type magnetic pole reinforcing key mounting structure of the utility model, by the output end of first cylinder drives lifting plate vertical drop, in through the linkage cooperation of the second rotating seat outside lifting plate, rotating rod and first rotating seat, clamping block can be driven along installation groove inside slide, in using limit block and sliding groove guide cooperation, multiple clamping blocks can be made synchronous tightening and clamping precision motor, in using the design of anti-slip texture, can increase friction, prevent precision motor from producing displacement.

The utility model relates to target chamber technical field, specifically disclose a kind of multi-beam irradiation target chamber, including cylinder, cylinder two ends are provided with front end cap and rear end cap, front end cap is located in the one end of cylinder near beam source, and is provided with several beam source connecting cylinders on front end cap, beam control mechanism is set between beam source connecting cylinder and beam passage, the other end of beam passage extends to the region where target material is located, and target material is set in cylinder by target material positioning mechanism. Through the one-to-one correspondence of multiple beam source connecting cylinders and the beam passage in cylinder, the independent on-off control of multi-beam can be realized;Through the setting of target material positioning frame and arc clamping block, both the stability of target material in the irradiation process is ensured, and the convenient replacement of target material can be realized. The problem that the space intersection between different beams when the multi-beam passes through the rigid channel in the conventional target chamber can cause serious scattering effect and non-intended energy deposition superposition;And target material switching and attitude adjustment difficulty.

This utility model discloses a three-point communication idle-spinning padlock cylinder, belonging to the field of lock technology. The three-point communication idle-spinning padlock cylinder includes a lock shell, one end of which is open and a lock cover is fixedly connected to the opening. The other end of the lock shell has an integrally formed boss. A main control board and a drive motor are fixedly installed inside the lock shell. It can add three contact points and make them work simultaneously, enabling parallel processing of more data. In scenarios with large amounts of encrypted data, such as asymmetric algorithms, it can quickly complete data transmission and encryption processing. Simultaneously, the improved communication stability reduces signal interruptions and errors, ensuring the accuracy of data transmission and effectively improving the reliability of locks in the field of security protection. It provides a more robust security guarantee for devices such as anti-theft doors. Compared to traditional single-point communication idle-spinning padlock cylinders, the three-point communication idle-spinning padlock cylinder greatly improves communication efficiency.

A multi-pipe-diameter self-adaptive pigging pry connector device comprises a receiving valve and an adjusting pipe. The two sides of the receiving valve communicate with connecting pipes correspondingly, and the connecting pipe on one side of the receiving valve communicates with the conveying pipeline and is used for receiving or sending out the pipe cleaner. One end of the adjusting pipe is communicated with the connecting pipe on one side of the receiving valve, and the other end is communicated with the conveying pipeline; a plurality of adjusting plates are arranged on the inner wall of the adjusting pipe in a surrounding manner; the end, close to the receiving valve, of the adjusting plate is rotationally arranged on the inner wall of the adjusting pipe. A plurality of adjusters are arranged on the outer wall of the adjusting pipe, penetrate through the side wall of the adjusting pipe and are correspondingly connected to the end, away from the receiving valve, of the adjusting plate, and the adjusters are used for controlling the adjusting plate to rotate. The problems that when conveying pipelines with different pipe diameters are connected, an existing connecting device is poor in pipe diameter adaptability, and cost is increased when special connector devices are arranged respectively are solved.

This utility model relates to the field of air handling equipment technology, specifically an airflow regulating device for an air handling equipment. The device includes a purification box with an air inlet slot at the top. A suction fan is rotatably connected to the bottom of the inner wall of the air inlet slot. A connecting block is fixedly connected inside the air inlet slot and above the suction fan. Airflow regulating plates are symmetrically arranged on the outer side of the connecting block. A connecting rod is fixedly connected to the end of each airflow regulating plate away from the connecting block. The end of each connecting rod away from the airflow regulating plate extends to the outer side of the purification box and is fixedly connected to a gear. A gear ring is rotatably connected to the outer side of the purification box, and the gears mesh with the gear ring. Closing slots are provided on both sides of the airflow regulating plates. The beneficial effect of this utility model is that the motor drives one of the gears to rotate, causing the gear ring to link all the gears, enabling precise control of the rotation angle of the airflow regulating plates and achieving precise airflow regulation to meet the precise airflow requirements of different usage scenarios.

The utility model relates to the field of laser positioners for machine tools, and discloses a laser positioner for a machine tool, which comprises a machine tool body, driving mechanisms are arranged on the right side and the rear side of the machine tool body, a positioning mechanism is arranged at the top of each driving mechanism, and each positioning mechanism comprises a laser positioner and a bottom plate. A mounting plate is fixedly connected to the bottom of the laser positioner, a limiting block is fixedly connected to the bottom of the mounting plate, a limiting groove is formed in the top of the bottom plate, the limiting block is inserted into the inner wall of the limiting groove, and a clamping block is slidably connected to the inner wall of the bottom plate. According to the laser positioning device, the clamping block is pulled through the pull ring to overcome the elastic force of the reset spring so that the clamping block can be disengaged from the clamping groove, the installation plate and the laser positioner can be rapidly disassembled, the laser positioner can be easily installed on different types of machine tools, the universality and flexibility of equipment are improved, the laser positioner can be disassembled without screwing a bolt, and the working efficiency is improved.

This utility model relates to the field of building construction technology, specifically disclosing a reusable safety protection platform for the atrium of a connecting corridor. It includes an expandable protection platform and a suspended support frame installed under the expandable protection platform. The suspended support frame is equipped with hangers that match the sidewall of the atrium, and a fine-adjustment mechanism and anti-sway components are also installed on the side of the suspended support frame adjacent to the atrium sidewall. After construction of different parts of the atrium is completed, the platform components can be quickly disassembled and transported to other construction locations for reassembly and reuse. This reusability significantly reduces construction costs, minimizes material waste, improves construction efficiency, and shortens the construction cycle, meeting the requirements of modern building construction for high efficiency, energy saving, and environmental protection. It solves the problem of existing technologies where the perimeter of the atrium lacks a solid protective structure during the construction phase, posing significant safety hazards.

This utility model relates to the field of metal round tube processing technology, and discloses a cutting device for metal round tube processing. It includes an operating table, two lower clamping plates, and two upper clamping plates. One lower clamping plate is fixedly connected to one end of the top of the operating table and has an L-shaped plate fixedly connected to one side. The other lower clamping plate is slidably connected to the top of the operating table and has a vertical plate fixedly connected to its top. A first cylinder is fixedly connected to the top of the L-shaped plate, and its output end passes through the L-shaped plate and is fixedly connected to the top of one of the upper clamping plates. The other upper clamping plate is slidably connected to the outside of the vertical plate and has two connecting rods fixedly connected to one side. Each connecting rod passes through one of the upper clamping plates, and each upper clamping plate cooperates with its corresponding lower clamping plate. The advantages of this utility model are that it reduces the need for manual intervention, significantly improves the speed and efficiency of cutting, and eliminates the need for operators to manually adjust the position of the round tube, saving a significant amount of time and labor.

This application discloses an auxiliary conveying device for packaging bags, relating to the field of packaging bag production. It includes a conveyor belt, with an auxiliary tilting mechanism located on the side of the conveyor belt away from a third conveyor belt. The auxiliary tilting mechanism includes a support frame 1 located on one side of the conveyor belt, a support frame 2 fixed to the support frame 1, a push plate between the support frame 2 and the conveyor belt, and a limit rod on the side of the conveyor belt away from the support frame 1. When the push plate, driven by a pushing component, pushes the packaging bag onto the third conveyor belt, the limit rod blocks the upper part of the packaging bag, thus achieving a smooth tilting of the packaging bag. This effectively prevents damage or leakage of contents due to uneven force during tilting, significantly improving the automation and efficiency of packaging bag conveying and tilting, and avoiding packaging bag damage or conveying jams that may occur with manual operation.

The utility model discloses a kind of key structure, intelligent mainframe and intelligent wearing equipment, the key structure, including: crossbeam;Key, set in the side of the crossbeam;Fixed column, set in the side of the crossbeam away from the key, the fixed column is used to connect reset piece;Two fixed ears, set in the top of the crossbeam both ends;Buckle piece, set in the bottom of the crossbeam;Two connecting frames, two the connecting frame is respectively connected with the intelligent mainframe by connecting piece, each the connecting frame is provided with pin hole, for through pin shaft and corresponding the fixed ear rotation connection;The crossbeam, the key, the fixed column, two the fixed ear, the buckle piece integrally setting is provided in the utility model, reduce the number of parts, reduce production and assembly cost, integral forming promotes mechanical strength, avoid the component loosening or fracture caused by frequent operation, can also be applicable to different intelligent mainframe.

The application discloses a meniscus suture device which comprises an axis extending in an extending direction, and comprises a puncture needle, a pushing needle and a handle; the pushing needle is coaxially arranged with the puncture needle and movably arranged in the puncture needle; the handle is internally provided with a pushing assembly and a rotating assembly; the pushing assembly is arranged on one side of the rotating assembly close to the proximal end; the pushing assembly is connected with the pushing needle to push the pushing needle to move in the extending direction; the rotating assembly is connected with the puncture needle to realize rotation of the puncture needle by the extending direction as an axis by a preset angle. The application realizes rotation of the puncture needle by the preset angle by the rotating assembly, solves the problem that the puncture needle of the current meniscus suture device cannot rotate left and right, and simultaneously, the rotating assembly can be adopted to accurately control the rotation angle of the puncture needle, and the puncture range of the distal end of the puncture needle is expanded.

The utility model discloses a kind of unmanned aerial vehicle shooting devices for image processing, including substrate, the top of the substrate is provided with round groove, and the notch part of round groove is equipped with rear hemisphere, the front end fixedly connected with front hemisphere of rear hemisphere, the front end of front hemisphere is equipped with cover piece, the surface of cover piece is equipped with camera in central position, the bottom of substrate is fixedly connected with connecting platform.This kind of unmanned aerial vehicle shooting device for image processing, clamping groove block and buckle seat fixed support, arc platform eliminates rotation frustration, ensure smooth rotation, each component is combined by clamping, plug-in and other ways, without complex tool, it is convenient to disassemble maintenance, independent battery mounting seat and wire connection design, ensure that power supply is continuous in rotation process, cover piece and inner cylinder protect camera, avoid external impact damage, servo motor accurately control rotation angle and speed, improve equipment use efficiency.

The utility model belongs to the technical field of die cutting platforms, and particularly relates to a double-station rotary die cutting platform which comprises a supporting frame, a controller is arranged on the outer side of the supporting frame, a die cutting assembly is fixedly connected to the upper surface of the supporting frame, a fixing ring is fixedly connected to the inner bottom wall of the supporting frame, and a rotating ring is rotationally connected to the inner wall of the fixing ring. The bottom face of the rotating ring is fixedly connected with a sawtooth ring, a band-type brake motor is arranged below the fixing ring, the power output end of the band-type brake motor is fixedly connected with a gear, the gear is meshed with the sawtooth ring, two lower die cutters and two sets of electric push rods are arranged above the rotating ring, and the telescopic end of each electric push rod is provided with a telescopic plate. The die cutting assembly is arranged to be matched with the lower die cutter, material die cutting can be achieved, meanwhile, the band-type brake motor is used for driving the gear to be in meshing transmission with the sawtooth ring, the rotating angle of the rotating ring can be controlled, automatic double-station switching is achieved, and compared with a traditional manual or intermittent switching structure, the positioning precision is higher, and the switching speed is higher.

The utility model belongs to the technical field of pressure vessel detection, and particularly relates to a sealing performance test device based on pressure vessel service life evaluation, which comprises an equipment body, an L-shaped mounting plate is fixedly mounted on the rear side of the top of the equipment body, and a round pipe is slidably arranged in the middle of the top side of the L-shaped mounting plate in a penetrating manner. The sealing gasket is used as a primary sealing layer to directly contact with the opening of the pressure container, and the air bag is inflated and expanded through the vent groove in the connecting sleeve and is in gapless fit with the inner wall of the container, so that the problem of leakage caused by deformation or uneven contact of a single sealing layer is solved, and the sealing tightness is remarkably improved; the water pump conveys high-pressure water into the pressure container through the first electromagnetic valve and injects the high-pressure water into the pressure container through the round pipe and the connecting sleeve to achieve water tightness detection, or the air pump inflates the interior of the container through the air inlet pipe and the fourth electromagnetic valve, the cylinder is connected with the water conveying pipe through the second electromagnetic valve, water seal is formed towards the exterior of the container, and air tightness detection is achieved.

The application discloses an external air inlet grille, a control method thereof and a vehicle. The external air inlet grille comprises a frame, at least one air inlet, at least one blade in the corresponding air inlet, a first gear on the end of the at least one blade, a rotating member rotatably arranged on the frame, a gear portion on the side of the rotating member facing the first gear, the gear portion being engaged with the first gear, a groove on the side of the rotating member away from the first gear, an oscillating arm movably arranged in the groove, and a driving assembly for driving the oscillating arm to rotate. The application drives the oscillating arm to rotate, the oscillating arm moves in the groove, the oscillating arm slides relative to the groove, the rotating member is driven to rotate, and the blade is driven to rotate through the first gear. The driving assembly can accurately control the rotating angle of the oscillating arm, the sliding distance of the oscillating arm relative to the groove, the rotating angle of the rotating member, and the rotating angle of the blade, thereby accurately controlling the air intake of the air inlet.

The utility model discloses a kind of key structure, intelligent mainframe and intelligent wearing equipment, the key structure includes: crossbeam;Key, set in the side of the crossbeam;Fixed column, set in the side of the crossbeam away from the key, the fixed column is used to connect reset member;Two fixed ears, set in the top of the crossbeam both ends, the fixed ear is provided with pin hole, for through pin and intelligent mainframe rotation connection;Buckle, set in the bottom of the crossbeam;The crossbeam, the key, the fixed column, two the fixed ear, the buckle integrally is set. In the utility model, reduce the number of parts, reduce production and assembly cost, integrally formed to improve mechanical strength, avoid the loosening or fracture of component caused by frequent operation.

The utility model provides a rotating mechanism, and relates to the technical field of electronic atomization devices. The rotating mechanism comprises a carrying table, a carrier assembly, a calibration assembly and a driving assembly, and the carrier assembly is rotatably mounted on the carrying table and can bear a plurality of products; the calibration assembly is arranged on the carrying table and comprises a first calibration piece and a second calibration piece, and the first calibration piece and the second calibration piece are arranged on the two sides of the rotating axis of the carrier assembly respectively so as to limit the rotating angle of the carrier assembly; the driving assembly is used for driving the carrier assembly to rotate and enabling the carrier assembly to keep abutting against the first calibration piece or abutting against the second calibration piece. According to the rotating mechanism, by arranging the carrier assembly, the multiple products contained on the carrier assembly are driven to synchronously rotate to different states relative to the carrying table, and manual operation is reduced; the first calibration piece and the second calibration piece abut against the carrier assembly so that the rotation angle of the carrier assembly can be accurately controlled, and the machining precision is effectively improved.

The utility model discloses a tool setting gauge convenient to adjust, and particularly relates to the field of tool setting gauges, which comprises a base, a rotatable movable end is arranged at the top of the base, a detection end is mounted at the top of the movable end, a gap is reserved between the movable end and the base, and a driving part for driving the movable end to rotate is mounted in the gap. A rotating shaft moving part for driving the base to move back and forth is arranged at the bottom of the base, and limiting parts for limiting movement of the base are arranged on the two sides of the rotating shaft moving part. The servo motor is adopted to drive the gear-gear ring and the screw-threaded pipe for transmission, real-time feedback of the distance sensor is matched, accurate control over the rotation angle and the translation distance is ensured, errors are small, the device is suitable for high-precision tool detection scenes, the rotation range and the translation stroke of the movable end can be customized and expanded, and the detection precision is high. The device is compatible with detection requirements of cutters of different sizes and types, and is suitable for various industrial scenes such as numerical control machine tools and machining centers.

This utility model discloses a rotating telescope, belonging to the technical field of telescopes. It includes a telescope body, a rotating base, and a mounting base. The telescope body is mounted on the rotating base, and the rotating base is mounted on the mounting base. A control main board is disposed within the telescope body. A rotating assembly is disposed within the cavity of the rotating base. The rotating assembly includes: a drive component electrically connected to the control main board; a gear connected to the output shaft of the drive component; an external gear ring fixedly connected to the mounting base, the external gear ring meshing with the gear; an encoder electrically connected to the drive component via the control main board; and a knob mounted on the rotating base, one end located outside the rotating base, and the other end located inside the cavity and connected to the encoder. This utility model, by incorporating the encoder within the rotating base and using the connected knob, allows for precise control of the rotation angle of the rotating base.

The utility model provides an L-shaped turnover displacement device, and belongs to the technical field of displacement devices. The L-shaped overturning and shifting device comprises a bottom plate, a supporting frame, a driving box, a rotating shaft, a workbench, a main shaft, a mounting groove, a screw rod, a pressing plate and a fixing nut. The driving box supports the working table through the main shaft, so that the working table can rotate relative to the driving box, a workpiece fixed to the working table is driven to rotate, and the welding mechanism can weld different positions of the workpiece conveniently. The two rotating shafts are connected with the two sides of the driving box correspondingly, and the two rotating shafts are rotationally connected with the two supporting frames correspondingly, so that the driving box is supported by the two supporting frames through the two rotating shafts correspondingly, and the driving box can rotate between the two supporting frames; and therefore, the workpiece fixed on the workbench can be overturned, so that the welding mechanism can weld the inner wall or the outer wall of the workpiece conveniently.

This application provides an angle-adjustable structure and a mobility scooter. The angle-adjustable structure includes a first rotating seat, a second rotating seat, a first elastic element, and a locking mechanism. The first rotating seat has a first toothed surface and a first mounting groove on its first mounting surface, and the second rotating seat has a second toothed surface and a second mounting groove on its third mounting surface. The first and third mounting surfaces are opposite to each other. The locking mechanism connects the first rotating seat and / or the second rotating seat, and is used to lock or unlock the first and second rotating seats. The first elastic element is installed in the first and second mounting grooves. When the first toothed surface rotates relative to the second toothed surface, the first elastic element generates a damping force opposite to the direction of rotation. The first elastic element can generate a damping force opposite to the direction of rotation, facilitating precise control of the rotation angle by the user.