54results about How to "Control rotation angle" patented technology

The utility model discloses a ball spline ZR shaft mounting head, and belongs to the technical field of precision chip processing. The ball spline ZR shaft mounting head comprises a bottom plate, and a linear sliding block module is fixedly mounted on the surface of the bottom plate. According to the ball spline ZR shaft mounting head, the Z-axis synchronous wheel assembly rotates, so that the synchronous belt pressing block moves along with the Z-axis synchronous wheel assembly and drives the suction nozzle rod support to move, then the spline housing assembly and the suction nozzle move in the direction of a precision chip, and the R-axis stepping motor works to drive the R-axis synchronous wheel assembly to move; the suction nozzle rod synchronous belt wheel moves and drives the suction nozzle to rotate, at the moment, a vacuum pump air pipe is connected into the air pipe rotating joint, air flow reaches the suction nozzle through the ball spline shaft for vacuumizing, so that the precision chip is sucked, the movement stability of the Z axis is high, and the precision of sucking the precision chip by the suction nozzle is high; not only is the suction rate of the precision chip improved, but also the processing efficiency of the precision chip is improved.

The utility model relates to the technical field of numerical control machining, in particular to a vertical milling machine chamfering tool which comprises a workbench, an adjusting device, a clamping device and a rotary adjusting device, the top end of the workbench is provided with a movable seat through the adjusting device, the top end of the movable seat is provided with the clamping device, and the rotary adjusting device is arranged on the workbench. The clamping device comprises fixed plates, sliding blocks, a movable plate, a two-way screw rod, a gear, a rack and an electric telescopic rod, the fixed plates are fixedly installed at the left end and the right end of the movable seat, the two-way screw rod is transversely and rotationally installed in the fixed plates, and the two-way screw rod drives the two sets of sliding blocks to linearly move on the two-way screw rod; the two sets of sliding blocks drive the movable plate to move from the two ends to the middle till the rotary adjusting device is driven to clamp the left end and the right end of the workpiece, linear movement or rotary adjustment can be conducted on the workpiece under the cooperation of the rotary adjusting device and the adjusting device, and all-directional chamfering machining can be conveniently conducted on the workpiece in the later period.

The utility model provides an automobile air-inlet grille automatic assembling mechanism and an assembling method thereof. The assembling mechanism comprises a connecting rod assembling mechanism arranged on one side of a bottom plate, a motor assembling mechanism arranged on the front side of a connecting rod pushing air cylinder and blade assembling mechanisms symmetrically arranged on the two sides of the motor assembling mechanism. The blade assembling mechanism comprises a blade clamping assembly, a first driving assembly and a second driving assembly are arranged on the front side and the rear side of the blade clamping assembly correspondingly, and the first driving assembly drives the blade clamping assembly to reciprocate in the direction of the motor assembling mechanism to achieve connection between a blade and a connecting rod. The second driving assembly drives the blade clamping assembly to conduct angle rotation on the blades. According to the air-inlet grille assembling device, the air-inlet grille can be quickly and effectively assembled in place, and continuous and repeated manual operation is avoided. The assembling efficiency is high, and labor and time are saved. And the blade assembling mechanism is combined with an arc-shaped groove, so that the rotating angle of the blade is more accurately controlled in a limited space and at low cost.

The utility model discloses a gynaecology and obstetrics uterine cavity endoscope convenient to adjust, the endoscope comprises an endoscope main body, the left side of the endoscope main body is provided with an endoscopic tube, the left side of the endoscopic tube is fixedly connected with a transparent tube head, the transparent tube head is internally provided with a searchlighting assembly, and the searchlighting assembly is fixedly connected with the endoscope main body. A cavity is formed in the right side of the endoscope body, a first rack and a second rack are slidably connected to the upper side and the lower side of the interior of the cavity respectively, the left side of the first rack and the left side of the second rack are connected with a searchlighting assembly through a first pull rope and a second pull rope respectively, and an adjusting assembly is arranged between the first rack and the second rack. The first pull rope and the second pull rope move in opposite directions by rotating the handle, at the moment, the first pull rope drives the mounting plate, the endoscope head and the searchlight to rotate around the circular shaft, and therefore the angle of the searchlighting assembly can be conveniently adjusted, medical staff can conveniently collect images in all directions of a treated part of a patient, and the practicability of the uterine cavity endoscope is improved.

The invention discloses a camera rotating device, a monocular telescope and a rotating mechanism thereof. The camera rotating device comprises a connecting cylinder, a rotating ring body, a resistance ring body, an oil film and a driver, wherein the rotating ring body and the resistance ring body are fixed to each other and arranged on the two opposite sides of the connecting cylinder in a sleeving mode. The connecting cylinder comprises a resistance part forming the outer surface of the connecting cylinder, and the rotating ring body is provided with a plurality of tooth parts annularly arranged on the outer edge of the rotating ring body. The oil film is located in a space defined by the rotating ring body, the resistance ring body and the resistance part. And the driver is meshed with at least one tooth part, and the relative position of the driver and the connecting cylinder is kept fixed. And the driver can stir at least one tooth part, so that the rotating ring body and the resistance ring body jointly rotate relative to the resistance part, and rotating resistance is generated through the oil film. The camera rotating device is not easy to deviate due to the influence of gravity, and can generate higher rotating resistance so as to accurately control the rotating angle.

The invention relates to the field, and discloses micro-nano bubble making equipment and a micro-nano bubble making process, the micro-nano bubble making equipment comprises a secondary pressurization atomization pipe, a mixing pipe, an electrolysis pipe and a physical stripping pipe which are communicated in sequence, a spraying part is arranged in the physical stripping pipe, the spraying part comprises a conical shell and a ball, and the spraying part can rotate by changing the rotation of the ball. The position of the jet hole relative to the physical stripping pipe is changed, so that the control over the bubble jet direction is achieved, the output pressure of the second air compressor is adjusted, the rotation angle and speed of the ball can be controlled, the regulation and control over the bubble jet direction are achieved, and the bubbles can be more evenly distributed in the physical stripping pipe by adjusting the jet direction. This helps reduce the aggregation and collision of bubbles.

The invention provides a roadway repairing machine which comprises a mechanical arm, a plurality of angle measuring devices and an adjusting device, the mechanical arm is provided with a plurality of arm sections connected in sequence, and every two adjacent arm sections are connected through a rotating shaft; at least one part of the angle measuring device is connected with the rotating shaft, the angle measuring device comprises a rotating speed sensor, and the rotating speed sensor is used for measuring an included angle between two adjacent arm sections in real time; at least one part of the adjusting device is electrically connected with the mechanical arm and the angle measuring device, and the adjusting device can adjust the rotating angle of the arm section according to the included angle. The problem that in the prior art, the real-time measurement effect of the mechanical arm angle of a roadway repairing machine is poor is solved.

The utility model relates to a hydraulic system control switch technical field, especially a kind of pilot cut-off switch, rotating shaft one end passes through shaft seat, rotating damper and rotating shaft use keyway connection to be circumferentially fixed, rotating shaft one end is connected with pilot cut-off rod, the other end is connected with tension spring, by the pilot cut-off rod of front and back and drive to make rotating shaft rotate to open and close pilot valve, the other end of rotating shaft is connected with tension spring, through specific angle arrangement, provide power assistance in the rear half course of the rotation of shaft two directions, and provide stable locking force after reaching limit, ensure that not because equipment vibration leads to switch state change.In the process of rotation, under the tension of tension spring, the rotating speed of rotating shaft is constantly improved, at this time, rotating damper will provide reverse rotating torque according to the rotating speed of rotor, avoid the rotating speed of rotating shaft too fast and occur violent collision and vibration at limit point.

This invention relates to the field of umbrella production equipment technology, and particularly to an umbrella bead welding device to solve the problem of needing to change different special molds when producing products with different numbers of umbrella ribs. The device includes a frame, a placement platform on the frame for placing umbrella fabric, and a welding device on the frame for welding umbrella beads onto the umbrella fabric. A rotating device is provided between the placement platform and the frame to drive the placement platform to rotate intermittently. The rotating device includes a support shaft on the frame, the placement platform being rotatably connected to the support shaft, and a rotating gear rotatably mounted on the support shaft. A first telescopic member is provided on the frame, and a rack is provided on the telescopic rod of the first telescopic member. The rack meshes with the rotating gear. A one-way rotation device is also provided between the rotating gear and the placement platform.

The present invention belongs to the technical field of torsion fatigue testing, and in particular, relates to a torsion fatigue testing device, including a frame, a test bench, a lifting device, a first driving mechanism, a driving head, a first locking structure, a second locking structure and a second driving mechanism, wherein the first locking structure and the second locking structure are arranged at intervals, the first locking structure locks one end of the headband, the second locking structure locks the other end of the headband, the second driving structure can drive the second locking structure to move in a direction away from the first locking structure, the first driving mechanism is connected to the lifting device, the driving head is connected to the first driving mechanism, the lifting device can drive the first driving mechanism and the driving head to move in a direction close to or away from the test bench, the driving head is used to be connected to an adjustment knob on the headband, and the first driving mechanism drives the driving head to rotate so that the driving head drives the headband to twist. The torsion angle of the adjustment knob can be accurately controlled to improve the accuracy of the measured torsion limit times.

The invention discloses an electronic information antenna mounting device, and relates to the technical field of antenna mounting, the electronic information antenna mounting device comprises a wireless device, a damper is arranged below the wireless device, an adjusting slide rail is arranged below the damper, and a buckle plate is arranged on the lower surface of the adjusting slide rail. After the position of the wireless device is randomly adjusted by an operator, the second auxiliary arm is driven by the first auxiliary arm, and the wireless device can be adjusted to be locked at different angles through the damping control of the damper under the meshing of the first gear and the second gear; therefore, the angle adjustment of the sucker cover in different horizontal directions can be realized; due to the fact that angle adjustment in different horizontal directions can be achieved, the antenna support is suitable for antennas of various types and models, and traditional communication antennas or emerging antennas of radars, satellites and the like can be accurately installed and adjusted through the antenna support.

The utility model relates to a mounting and dismounting tool for a petroleum drilling connector, and relates to the technical field of petroleum drilling operation tools. The mounting and dismounting tool comprises: a base; the supporting rotating disc can be manually operated and is rotatably mounted on the base, the supporting rotating disc is higher than the base, and a positioning column is arranged on the upper surface of the supporting rotating disc in a protruding mode and used for being inserted into a well drilling connector; and the anti-inclination device is installed on the base and comprises a guardrail higher than the supporting rotary disc, and the inner diameter of the guardrail is larger than the outer diameter of the well drilling connector. The rotating speed and the rotating angle of the well drilling connector can be accurately controlled in a manual rotating mode, and the situation that screwing is too tight or too loose during mounting and dismounting is avoided. And moreover, a positioning column and an anti-toppling device are arranged, so that the drilling connector can be prevented from inclining and falling off in the using process, and the safety of operators is guaranteed.

The invention discloses a rapid quantitative pipettor which comprises a quantitative tube, a liquid outlet mechanism is arranged on the quantitative tube, a micro water pump is arranged at the bottom of the inner side of the quantitative tube, a control switch is arranged on the outer side of the quantitative tube and electrically connected with the micro water pump, and a connecting nozzle is fixedly connected to the bottom of the quantitative tube. A water inlet pipe is fixedly connected to the bottom of the connecting nozzle, a backflow preventing mechanism is arranged on the inner side of the connecting nozzle, a quantitative adjusting mechanism is arranged on the upper portion of the inner side of the quantitative pipe, a piston is slidably connected to the middle of the inner side of the quantitative pipe, and a backing ring is fixedly connected to the position, below the piston, of the middle of the inner side of the quantitative pipe; the invention relates to a rapid quantitative pipettor, which has the characteristic that the pipetting amount and the liquid outlet direction can be adjusted.

The utility model belongs to the technical field of cloth printing and dyeing, and particularly relates to a finished product airing device for printing and dyeing cotton elastic sanded gigging fabric, which comprises a base, universal wheels are arranged below the base, and an airing mechanism and a drying control mechanism are arranged above the base; the airing mechanism is located on the outer side of the drying control mechanism. The airing mechanism comprises a first airing rod, and the airing mechanism achieves the action of airing finished products through the first airing rod; the drying control mechanism comprises an air blower, and the drying control mechanism achieves the action that the air blower dries finished products. According to the finished product airing device for printing and dyeing of the cotton elastic sanded gigging fabric, the drying control mechanism is arranged, the control table sets the needed drying temperature, after air is heated by an electric heating pipe, the air is blown to a temperature and humidity sensor on a connecting rod on the other side through an air blower, and the temperature and humidity sensor feeds back the temperature and humidity of the dried air to the control table; the problem that sun-drying work cannot be carried out all day long in the whole year is solved.

The utility model discloses a low-loss high-power I-shaped inductor structure, and aims to provide the low-loss high-power I-shaped inductor structure which can timely dissipate heat of an inductor through external assistance. The inductor comprises a protection shell, an inductor body, a fixing assembly, an opening and closing assembly and an exhaust fan, a protection cavity is formed in the protection shell, the bottom face of the protection cavity is open, the fixing assembly is installed in the protection cavity, the inductor body is installed in the protection cavity through the fixing assembly, the opening and closing assembly is installed on the side face of the protection shell, and the exhaust fan is installed on the side face of the protection shell. And the exhaust fan is mounted on the top surface of the protection cavity. The inductor has the advantages that the inductor is cooled in time through external assistance, the inductor body can be quickly disassembled and assembled, heat dissipation can be guaranteed, the rotating angle of the rotating plate can be controlled, resetting of the rotating plate can be achieved, and heat dissipation of the top end of the inductor body is facilitated.

The utility model discloses a controllable rotation angle's hose joint belongs to hose joint technical field, including the joint body, is provided with the limit block and rotatable limit ring on it, the limit block is used for limiting the rotation angle of limit ring, the hose is connected one end in joint body, and the accessory joint is located another end in joint body and is connected on limit ring, the utility model discloses a limit groove is set up on the joint body, sets up the limit block in the limit groove, and the limit ring with the opening rotatable connection in the limit groove, and the limit block is placed in the opening, when the clamping groove of accessory joint inner wall clamps the clamping block on the limit ring, can realize the connection between accessory joint and joint body, and because the setting of limit block makes accessory joint only rotate specific angle when rotating, installs it on the dust absorption pipe, will not over twist and damage the hose, influence dust absorption effect, and it can also be applicable to only need to rotate specific angle hose scene.

The invention belongs to the field of high-voltage circuit breaker operating mechanisms, and discloses a motor-driven high-voltage circuit breaker operating mechanism with an energy storage device, which not only obviously improves the transmission efficiency of the mechanism and obviously improves the control precision, thereby basically avoiding the abnormal phenomenon of switching on, but also has the advantages of small frictional heating amount and high reliability. An independent heat dissipation device does not need to be additionally configured, so that the occupied space of the mechanism is greatly reduced, the mechanism comprises a base, a driving unit and an operating unit, the driving unit comprises a driving motor and an output connecting rod assembly, the operating unit comprises an operating shaft rod and an operating pull rod, and an output shaft of the driving motor is provided with a driving crank arm. The driving crank arm is arranged on the operating shaft rod, the driven crank arm is arranged on the operating shaft rod, the output connecting rod assembly is in a chain shape, the two ends of the output connecting rod assembly are hinged to the driving crank arm and the driven crank arm respectively, the driving crank arm, the output connecting rod assembly and the driven crank arm form a plane connecting rod mechanism, the operating shaft rod is further provided with an operating crank arm, and the operating pull rod is hinged to the operating crank arm. And the operating pull rod is coupled with the moving contact rod.

The invention relates to a field, and discloses a micro-nano bubble production device and process, including a secondary pressurized atomization tube, a mixing tube, an electrolysis tube, and a physical stripping tube that are connected in sequence. A spray part is arranged in the physical stripping tube. The spray part includes a conical shell and a ball. The position of the spray hole relative to the physical stripping tube can be changed by changing the rotation of the ball, so as to realize the control of the bubble spray direction. By adjusting the output pressure of the second air compressor, the rotation angle and speed of the ball can be controlled to realize the regulation of the bubble spray direction. By adjusting the spray direction, the bubbles can be distributed more evenly in the physical stripping tube, which helps to reduce the aggregation and collision of the bubbles.

The utility model relates to the technical field of medical instruments, in particular to an air blowing training device which comprises a blowing nozzle, the blowing nozzle is connected with an observation air pipe through a hose and a main air pipe, and a floating ball is arranged in the observation air pipe; an adjuster is arranged at the joint of the hose and the main air pipe and comprises an adjusting knob and an adjusting umbrella controlled by the adjusting knob; the opening degree of the adjusting umbrella can be adjusted and controlled by rotating the adjusting knob, then the resistance during air blowing is changed, the device can be suitable for patients with large individual differences of ages, body types and development degrees in the pediatric environment, and the appropriate resistance is adjusted according to the actual conditions of different patients; the device is easy to adjust, stable and durable in structure, low in use threshold and long in service life; the effective exercise time can be conveniently recorded by arranging the prompt whistle opening, and the exercise interest of the low-age patient can be improved.

The invention discloses a steering wheel with a damping device, which comprises a support frame I, a support frame II, a bearing, a support rod I, a support rod II, a damper, an absolute value encoder, a speed reducing motor, a motor driving gear, an encoder gear and a steering wheel main gear, the wheel hub motor in the middle is driven to rotate through gear connection to achieve overall steering, and the angle where the wheel hub motor is located is monitored in real time through the absolute value encoder. The steering wheel rotation angle can be accurately controlled, the steering wheel can be rotated to a proper angle in the initialization process, follow-up rotation control is facilitated, and impact force generated in the steering wheel running process is effectively absorbed through the shock absorber behind the steering wheel so that the steering wheel can adapt to various terrain conditions.

The utility model discloses a kind of multifunctional photography shooting effect enhancement equipment, it includes support, the side inner wall of support is rotatably connected with driving bevel gear, the side surface of driving bevel gear is engaged with driven bevel gear, the side surface of driven bevel gear is fixedly connected with threaded rod, the side surface of threaded rod is threadedly connected with slide bar, slide bar is rotatably connected with connecting rod by moving plate, the end of connecting rod away from moving plate is rotatably connected with support rod, the upper surface of support is fixedly connected with support base, the lower surface of support base is rotatably connected with screw rod, the side surface of screw rod is threadedly connected with limit plate, the inner side of support base is rotatably connected with universal ball, the side surface of universal ball is fixedly connected with mounting plate, mounting plate is fixedly connected with fixed plate by spring. By the above component, threaded rod can be used to promote slide bar and moving plate movement, and support rod is opened by connecting rod, the rotation angle of support rod is facilitated to control, and after opening, the rotation of support rod is limited to make support rod support stable.

The utility model discloses a thin wafer edge removing manipulator, which belongs to the technical field of wafer polishing equipment and comprises a handle, a connecting seat arranged on the upper side of the handle, a connecting column arranged between the handle and the connecting seat, a fixing head arranged at the upper end of the connecting seat, a fixing groove arranged at the upper end of the fixing head, and an air cavity arranged in the connecting seat. The left end and the right end of the connecting base are provided with an air outlet and an air inlet connector respectively, the air inlet connector is connected with an air pump through an air guide hose, the connecting base is provided with an opening and closing device in the air cavity, the connecting column is connected with the opening and closing device, and air guide channels communicated with the fixing groove and the air cavity are formed in the fixing head and the connecting base. Through the arrangement of the air pump, the air cavity, the air guide channel, the air outlet hole and the air inlet connector, the air cavity and the fixing groove can form a negative pressure state, so that the wafer is adsorbed and clamped in the fixing groove, an original tweezers clamping mode is replaced, the clamping effect of the wafer is improved, and meanwhile the machining efficiency and the machining stability are improved.

The utility model discloses a high-precision low-altitude meteorological sensor calibration device, and relates to the field of sensor calibration. The air pressure calibrator comprises an air pressure calibrator main board, the upper surface of the air pressure calibrator main board comprises a micrometering valve, one end of the micrometering valve is connected with a universal joint, the other end of the universal joint is connected with a micrometering valve knob, the micrometering valve can be operated by rotating the micrometering valve knob, and a support is arranged at the lower end of the micrometering valve knob. According to the high-precision low-altitude meteorological sensor calibration device, the fine adjustment valve is arranged on the main board of the air pressure calibrator, and the universal joint is used for connecting the fine adjustment valve knob, so that an operator can conveniently operate the fine adjustment valve by rotating the knob, the flexibility and convenience of operation are greatly improved, and meanwhile, the operation efficiency is improved. The support at the lower end of the micro-metering valve knob can be horizontally placed when the micro-metering valve knob does not work, so that the adjusting precision is prevented from being influenced by shaking of the knob during operation, and the stability of micro-metering operation in the calibration process is ensured.

This application relates to an air guiding device, an air conditioner, and a control method thereof. The air guiding device includes: an air guiding plate with a first adsorption member disposed on the side facing the air conditioner body; a first rolling assembly including a first ring rotatably disposed on the air conditioner body, the first ring being configured to have a magnetic attraction force to attract the first adsorption member; and an angle monitoring assembly disposed on the air conditioner body, the angle monitoring assembly being configured to acquire a first angle of the air guiding plate relative to the air conditioner body; wherein, when there is a difference between the first angle of the air guiding plate and the target angle, the first ring is controlled to drive the air guiding plate to rotate relative to the air conditioner body through the first adsorption member, so that the air guiding plate reaches the target angle. The magnetic attraction force between the first adsorption member and the first ring can be used to realize the quick assembly and disassembly of the air guiding plate, and the angle of the air guiding plate relative to the air conditioner body can be acquired in real time to achieve precise air delivery by the air guiding plate.

The present invention provides a reversing valve and an automobile thermal management system, which relate to the technical field of fluid medium control valves, and the main purpose is to solve the technical problem of insufficient regulating function of three-way valves in the prior art. The reversing valve comprises a valve body with a cavity therein and a plunger arranged in the cavity along the axial direction of the valve body; wherein, N interfaces are evenly distributed on the circumference of the valve body, the interfaces are connected to the cavity, a through hole is provided on the plunger, the through hole is connected to at least two interfaces and at least one interface is not connected to the through hole, when the plunger rotates along the axis, the interface corresponding to the through hole is changed; N is an integer and N≥3. The reversing valve can be used in an automobile thermal management system. Since a plurality of interfaces are provided on the valve body, the plunger located inside the valve body can be connected to a plurality of interfaces, so when the plunger rotates through a certain angle, the conduit connected to the plunger will change, so that the flow direction of the fluid medium in the conduit can be conveniently adjusted.

The invention relates to a positioning device for processing a solar energy storage tank, and to the technical field of processing solar energy storage tanks; the device comprises a positioning seat, which is arranged on the ground; a positioning fixing part, which is arranged at the upper end of the positioning seat; the positioning fixing part comprises a T-shaped frame fixedly connected to the middle part of the upper end of the positioning seat, and horizontal placement plates are slidably installed at both ends of the T-shaped frame in the horizontal direction, and spacing adjustment parts for positioning solar energy storage tanks of different sizes are arranged at the bottom of the two horizontal placement plates; a rotating driving part for controlling the solar energy storage tank is arranged at the side end of the positioning ring; the present invention can insert the energy storage hole on the solar energy storage tank through the positioning fixing part, thereby realizing the positioning of the position of the solar energy storage tank and ensuring that the solar energy storage tank is in a horizontal state; the present invention can realize the positioning and fixing of solar energy storage tanks of different sizes through the spacing adjustment parts, which greatly improves the applicability of the present invention.

The present invention relates to an adsorber for waste gas desorption treatment, the adsorber for waste gas desorption treatment comprises a shell and a filter cartridge, the shell is provided with an air inlet and an air outlet; the filter cartridge is detachably connected to the shell, the filter cartridge can rotate in the shell, the filter cartridge comprises an inner cylinder and an outer cylinder, an annular space filled with adsorption medium is formed between the inner cylinder and the outer cylinder, an air inlet space connected to the air inlet is formed between the shell and the outer cylinder, and an air outlet space connected to the air outlet is surrounded by the inner side of the inner cylinder. The filter cartridge is configured to be detachable, which is convenient for replacing activated carbon; the filter cartridge can rotate in the shell, which is conducive to uniformly utilizing activated carbon to filter waste gas, and effectively avoiding the occurrence of short-flow phenomenon of compacted and compacted gas; desorption and adsorption share the air inlet and air outlet, that is, they can share a set of air inlet and outlet pipelines, the equipment has high integration and small footprint.

The present application discloses a UV 3D printing device, which includes a suspension rod installed on a transmission mechanism and a modeling platform assembly installed on the suspension rod, the modeling platform assembly includes a printing platform, a guide mechanism and a hollow shaft torque motor; the printing platform is installed on the suspension rod via a ball joint bearing; the guide mechanism includes a limit assembly and a guide member installed on the suspension rod, the outer ring of the rolling bearing of the limit assembly is fixed on the printing platform, the inner ring of the rolling bearing is connected to a second upper connecting rod, and the second upper connecting rod passes upward through the guide hole on the guide member; the stator of the hollow shaft torque motor is fixed on the suspension rod, and the lower end of the mover of the hollow shaft torque motor is fixedly installed with a driving ring; the upper surface of the printing platform is an inclined driving surface, and the driving ring is pressed against the driving surface. The present application also discloses a UV 3D printing method. The present application uses an inclined driving surface to swing the printing platform to accelerate the separation of the solidified layer from the bottom of the material tank and improve the printing efficiency.

The handle assembly of the rotary disconnecting switch comprises a base and a handle arranged on the base in a pivoted mode, the handle is provided with a rotation limiting part, the base is provided with an opening limiting part and a closing limiting part which are matched with the rotation limiting part, and the rotation limiting part is limited to rotate between the opening limiting part and the closing limiting part. And the handle is limited to rotate between an opening position and a closing position. The rotary disconnecting switch comprises an operating mechanism and a switch unit, one end of the operating mechanism serves as a driving end and is in driving connection with the switch unit, the other end of the operating mechanism serves as an operating end, the rotary disconnecting switch further comprises the handle assembly, and the handle of the handle assembly is connected with the operating end of the operating mechanism. According to the handle assembly and the rotary disconnecting switch, the rotation limiting part of the handle is matched with the opening limiting part and the closing limiting part of the base to limit the handle at the opening position and the closing position, fool-proof limiting design is adopted, operation is simple, the rotation angle of the handle is effectively controlled, and the contact reliability of the movable contact and the static contact is improved.

The utility model relates to potentiometre technical field discloses a kind of potentiometre rotating device, comprising: knob assembly, fixed component, potentiometer, limiting component and elastic piece, potentiometer includes resistor and adjusting part, resistor is fixedly connected with fixed component, adjusting part extends along first direction, the first end of adjusting part is rotationally connected in resistor, the second end of adjusting part is connected knob assembly through fixed component;Limiting component is connected to adjusting part, and limiting component is located between fixed component and knob assembly;Elastic piece extends along first direction, elastic piece is located between fixed component and limiting component, the both ends of elastic piece are respectively abutted with fixed component and limiting component.The utility model provides a kind of potentiometre rotating device, can more accurately control the angle of adjusting part rotation of potentiometer and keep stable, improve the accuracy of potentiometer voltage, current or signal parameter etc.