42results about How to "Avoid jitter" patented technology

The present application relates to the field of plate processing device, specifically to a flexible finishing mechanism, by setting the first and second side of the mold body as a smooth surface, used to guide the smooth entry of the plate, avoiding the sharp collision of the traditional disc mold, solving the problem of easy to produce wave under high speed. By setting the first and second torsional spring, used to provide continuous elastic buffer force, compared with linear spring, torsional spring is not easy to fatigue relaxation under long-term alternating load and easy to adjust the preload, solving the problem of unstable processing effect caused by the performance decline of traditional spring. By setting the first bearing, used to change the sliding friction between the first mold body and the plate into rolling friction, by setting the second bearing, used to change the sliding friction between the second mold body and the plate into rolling friction. At least solve one or more of the deficiencies of the existing finishing mechanism in high speed adaptability, adjustment convenience and long-term stability.

This utility model relates to the field of ball screw machining technology and discloses a double-push ball screw cyclone milling machine, including a housing. Two drive assemblies are provided on the inner walls of both sides of the housing. A cyclone milling cutter assembly is mounted on the upper drive assembly. A fixed platform is fixedly connected to the bottom inner wall of the housing. A slide is slidably connected to the upper surface of the fixed platform. A carriage is adjustablely mounted on the upper surface of the slide. A three-jaw chuck is rotatably connected to one side of the carriage via a bearing seat. A deceleration assembly is provided on one side of the carriage to slowly rotate the three-jaw chuck. This utility model uses two independent drive assemblies to move the workpiece and the cyclone milling cutter assembly respectively, allowing them to move in opposite directions to precisely control the workpiece's movement and axial feed, and to control the high-speed rotation and axial position of the cyclone milling cutter. The relative cutting motion between the two significantly improves machining efficiency.

The utility model relates to nitrogen seal valve technical field, concretely for a kind of high-performance stable opening and closing nitrogen seal valve, including valve body, valve cover, valve rod, valve seat, valve flap and actuating mechanism, valve rod includes upper valve rod and lower valve rod, by setting up middle cavity sealing mechanism in upper and lower valve rod connecting part, double sealing guarantee is provided for actuating mechanism, when the sliding seal of valve rod and actuating mechanism appears wear and causes sealing failure, sealing diaphragm still can guarantee sealing effect, make lower membrane chamber be in stable operation state, guarantee the normal operation of actuating mechanism;Lower spring is set at bottom cover, by the collaborative work of lower spring and upper spring, make valve rod produce more linear, more accurate displacement response to slight pressure change, to improve overall control precision, make valve operation more stable.

The application belongs to the technical field of intelligent service robots, and relates to a home maintenance robot with omni-directional movement and electromechanical cooperative posture control, which comprises an omni-directional chassis, a multi-degree-of-freedom mechanical arm module, a capsule type modular intelligent material supply cabin, an environment sensing and interaction head module, a sensor group and a main controller. The chassis is driven by Mecanum wheels and motors; the material supply cabin comprises an annular cabin body assembly, a plurality of capsule cabins, a central feeding channel, a lifting feeding platform, a platform lifting driving mechanism, a cabin door opening mechanism, a discharging channel and a magnetic guide mechanism. The device can realize standardized classified storage of small standard parts, automatic cabin selection, single capsule release, central receiving and magnetic discharging, thereby reducing the risk of standard part scattering, mixing and jamming; effectively improving the passability of the robot in unstructured terrains such as carpets, doorsteps and slopes, avoiding the imbalance of the center of gravity when the mechanical arm extends for operation, and being compact in structure and suitable for daily maintenance of household items in single-family homes.

The present application relates to a kind of borehole type static sounding device, it includes hydraulic power device, photoelectric separation cabin, suspension device, valve cabin, collection battery cabin, penetration propulsion device and probe in turn from top to bottom connection;Wherein, hydraulic power device is connected with external electricity by bearing cable interface, photoelectric separation cabin is connected with suspension device by axial positioning elastic card mechanism, suspension device is set in the middle position of borehole type static sounding device, hydraulic power device and collection battery cabin, penetration propulsion device are set to be located in the two sides of suspension device.The borehole type static sounding device of the present application can improve its stability when measuring, improve measurement accuracy.

The application provides a control method and device of a vehicle steering system, the method comprising: determining a vehicle state according to operation data of the vehicle; when it is determined that the vehicle state is a steering obstacle state, setting a preset safety protection angle as a target angle of a steering execution mechanism, and controlling the steering execution mechanism to rotate to the target angle at a first angle change speed, the safety protection angle being determined according to a current protection threshold of an execution motor, the first angle change speed being a change speed of an actual angle of a pinion gear of the steering execution mechanism, and the first angle change speed being not greater than a preset change speed threshold; and when it is determined that the vehicle state is an out-of-steering-obstacle state, controlling the target angle to change from the safety protection angle to an instruction steering angle according to a duration, the instruction steering angle being related to a target steering angle of the vehicle, and the duration being a duration for which the vehicle is in the out-of-steering-obstacle state.

The application discloses an interactive method for quickly adding a recurring schedule in a waterfall month view. The method involves the following steps: providing a schedule template selector, performing schedule drop, conflict detection and prompt, and differential submission and server verification in the waterfall month view. The application provides a schedule template selector in the user interface, displays a plurality of predefined schedule templates, selects at least one schedule template from them, applies the schedule template to the corresponding date to generate a schedule instance and performs a preview in response to the user's operation on the date grid, performs conflict detection and prompt during the preview, and submits the data to the server in response to the user's submission operation. The application improves the accuracy and efficiency of the interactive operation process of quickly adding a recurring schedule in a waterfall month view, and solves the problems of incoherence, low efficiency and high error rate in the prior art.

This invention discloses a turning device for square steel used in elevator racks after rolling, belonging to the field of square steel turning technology. It aims to solve problems encountered by existing devices when machining square steel with large aspect ratios and poor rigidity, such as easy vibration in the middle section, interference from positioning and vibration coupling, low centering accuracy, and increased errors due to steel chip jamming. The device includes a turning equipment base, a machine tool guide rail base, a chatter suppression mechanism, a positioning and locking mechanism, and a flexible stabilizing mechanism. The chatter suppression mechanism slides synchronously with the tool holder adjustment table, and adaptively supports the middle section of the square steel through bimetallic strip thermal induction. A displacement sensor detects deformation in real time. The positioning and locking mechanism is linked by an electrical signal, driving the centering component to automatically center via a telescopic rod and gear rack. A metal conductive sheet contacts an electrical contact button to trigger an electromagnet, causing the magnetorheological fluid to harden and lock the ejector pin. The flexible stabilizing mechanism achieves radial stabilization through a triangular turntable and flexible support rollers, and synchronously links with an air duct to blow away steel chips. The three mechanisms work together to form a closed loop, improving machining accuracy and stability, and adapting to the large-scale machining needs of square steel for elevator racks.

The utility model discloses a kind of extremely thin lithium battery copper foil intelligent efficient drying and low disturbance cooling system, including drying cabinet, cooling box, still including installation air knife drying system on drying cabinet and installation air knife cooling system on cooling box;The air knife drying system includes the heat source box at the top of drying cabinet, the heat conduction air pipe connected with heat source box, the hot air pipe at the inside upper and lower of drying cabinet and several equidistantly installed hot air knife on hot air pipe, the heat conduction air pipe is butt joint with hot air pipe;The air knife cooling system includes the cold source box on cooling box, the cold air pipe connected with cold source box, the cold air pipe at the inside upper and lower of cooling box and several equidistantly installed cold air knife on cold air pipe, the cold air pipe is butt joint with cold air pipe.The device uses double-sided symmetrical air knife drying system, symmetrical double cold air knife cooling system and monitoring system, effectively improve drying efficiency.

This utility model relates to the field of cable unwinding technology, specifically to a cable tray unwinding device. A cable bushing is rotatably connected to the inner side of a support frame, and a first limiting roller is rotatably connected to one side of the inner side of a mounting frame. A drive motor is bolted to one side of the outer wall of the mounting frame. A bottom frame, slidably connected to the inner wall of the mounting frame, is located at the bottom of the first limiting roller. A second limiting roller is rotatably connected to the inner side of the bottom frame. This design achieves active driving and synchronous control of the unwinding action, improving the stability and controllability of the unwinding process. The clamping structure between the first and second limiting rollers provides effective limiting support during cable unwinding, preventing lateral deviation and vibration of the cable during unwinding, significantly improving unwinding accuracy and operational stability. Furthermore, the sliding connection structure between the bottom frame containing the second limiting roller and the mounting frame allows the device to adapt to cable materials of different thicknesses, enhancing its adaptability and flexibility.

This invention discloses a method and system for controlling gear backlash meshing torque. It can obtain the corresponding active damping compensation torque based on the motor's rotational speed and vibration frequency at the current moment. The active damping compensation torque is then superimposed with a pre-calibrated torque to obtain the control torque, wherein the pre-calibrated torque is the torque value corresponding to the current moment in the torque curve obtained from pre-calibrated vehicle calibration. Based on the control torque, the active gear driven by the motor is controlled to mesh with the corresponding driven gear. Therefore, this invention can accurately find the appropriate torque based on the pre-calibrated torque curve, and form the control torque through closed-loop control based on the active damping compensation torque. Then, the motor is controlled based on the control torque to drive the active gear and driven gear to mesh, effectively solving gear backlash noise and gear backlash vibration, with a relatively ideal suppression effect.

This invention belongs to the field of pneumatic control valve technology, specifically providing a pneumatic shut-off valve. The invention aims to solve the problem of excessive noise during operation of existing pneumatic shut-off valves. To this end, the pneumatic shut-off valve of this invention includes a valve body assembly, a valve core assembly, and a sealing ring. This invention defines a distal variable volume cavity and a proximal variable volume cavity located on opposite sides of the axial direction of the movable yoke by having the valve core assembly and the valve body assembly jointly define such cavities. When the valve core assembly moves in one direction along its axial direction, the sealing ring first blocks the annular channel and then opens it. In this way, the initial movement of the valve core assembly is hindered by the air pressure difference, reducing its moment of inertia and speed, thereby weakening the impact force of the valve core assembly on the valve body assembly and reducing the noise during operation of the pneumatic shut-off valve.

The utility model relates to linear guide rail technical field, concretely to a kind of line rail clamp mechanism, comprising: track, the upper portion of track is provided with sliding seat;The middle part of brake seat is provided with through slot, the surface of driving rod is fixed with the anti-rotation convex strip corresponding and adaptation of anti-rotation groove, one end of driving rod is threadedly connected with support disc, and the other end is rotatably connected with jaw disc, the side of support disc is provided with fixed disc, and fixed disc is fixedly connected with brake seat, and the middle part of fixed disc is rotatably installed with adjusting bolt;Beneficial effects are that: by the middle part of through slot inner cavity mobile penetration is provided with strip-shaped toothed plate, the upper and lower sides of strip-shaped toothed plate are both provided with gear slot, and the upper and lower sides are both provided with outer gear ring with meshing, strip-shaped toothed plate slides along the length direction of itself, can drive outer gear ring and driving rod rotation, since support disc position is fixed, thus driving rod can drive jaw disc to translate when rotating, realize the clamping brake of track, to avoid that sliding seat shakes when positioning.

This utility model relates to the field of rotary cutting equipment technology, and more particularly to a rotary cutting equipment for processing PEEK plastic rods. Its technical solution includes a base and a cutting machine body. A fixed frame is fixed to one side of the upper end of the base, and a three-jaw chuck is rotatably connected to the fixed frame. A drive motor for rotating the three-jaw chuck is also fixed to the fixed frame. A back plate bracket is slidably connected to the back of the upper end of the base. A center plate is fixed at the middle of the front side of the back plate bracket. The cutting machine body is mounted on the center plate. A pair of side frames are fixed to the front side of the back plate bracket. A rotating roller is rotatably connected to the front end of the side frames. Stabilizing plates are fixed at equal intervals around the rotating roller. During rotary cutting, this utility model allows the plastic rod to pass through a perforation, maintaining its stability and avoiding vibration during rotation. Furthermore, the rotation of the rotating roller allows for switching of the stabilizing plates, enabling stable processing of plastic rods of different diameters.

The application provides a swingable device and a driving method thereof, relates to the technical field of automatic control, and can improve stability in a swing process, thereby improving product performance. The swingable device comprises a supporting assembly, a swingable assembly, a first magnetic unit, a second magnetic unit, an inductor, a control switch and a driving device; the supporting assembly is rotatably connected with the swingable assembly; the first magnetic unit is arranged on one side of the swingable assembly close to the supporting assembly; the second magnetic unit is arranged on one side of the supporting assembly close to the swingable assembly and is arranged in an eccentric manner opposite to the first magnetic unit; and the driving device is electrically connected with the second magnetic unit, the inductor and the control switch respectively.

The utility model discloses a kind of single motor drive double mechanism's magnetic attraction type structure, it is related to mechanical drive technical field, including driving motor, continuous mechanism and intermittent mechanism;The driving motor is directly connected with the continuous mechanism;The intermittent mechanism rotation is arranged on the continuous mechanism, and the continuous mechanism indirectly drives the intermittent mechanism by magnetic attraction;Intermittent mechanism both ends are respectively correspondingly provided with deflection limit seat one and deflection limit seat two;The deflection limit seat one, deflection limit seat two and driving motor are all fixedly connected on the shell of the household appliance using a single motor drive double mechanism's magnetic attraction type structure;Single motor can realize the differentiating motion control to the continuous mechanism and intermittent mechanism on two different planes by magnetic attraction type structure.

The present invention relates to an electro-discharge machining device, which comprises at least a carrier and an electro-discharge machining unit. The carrier is used to carry at least one workpiece to be machined. The electro-discharge machining unit comprises an electrode, a jig and a power supply unit. When the electro-discharge machining unit performs an electro-discharge machining process on a machining target area of the workpiece to be machined along a machining travel direction, a discharge section of the electrode moves relative to the machining target area of the workpiece to be machined. The present invention can improve the machining process, save the overall machining time and save the time required for replacing the electrode.

The utility model provides a metal aluminum pole extrusion process anti shake structure, including the anti shake seat, the inside of anti shake seat is provided with the installation pipe, the inside slide of installation pipe is provided with a plurality of slide frame, the side of slide frame is close to the transverse center of installation pipe and is provided with a plurality of gyro wheel seat, the inside of gyro wheel seat all rotates and is provided with gyro wheel, still be provided with drive mechanism on the anti shake seat, and drive mechanism is used to drive the removal of gyro wheel. Through the metal aluminum pole extrusion process anti shake structure of the utility model, the aluminum pole of being extruded is positioned through the gyro wheel of multidirectional, and then can effectively avoid the aluminum pole to take place the shaking in the extrusion process, can effectively guarantee the processing effect of metal aluminum pole.

The utility model provides a kind of high-integration degree differential absolute value encoder signal acquisition module, including isolation transceiver circuit, first differential signal transmission circuit and second differential signal transmission circuit, first differential signal transmission circuit is used to transmit data signal, second differential signal transmission circuit is used to transmit clock signal, first differential signal transmission circuit and second differential signal transmission circuit all include differential line, terminal resistance, clamping protection circuit, filter circuit and level stabilization circuit, differential line one end is connected with external encoder, other end is connected with isolation transceiver circuit, terminal resistance, clamping protection circuit, filter circuit and level stabilization circuit are all connected on differential line, from external encoder to isolation transceiver circuit direction is sequentially set, isolation transceiver circuit is connected with FPGA controller, solve the signal acquisition module in prior art needs multiple chips to collect one encoder data, lead to the problem of large board space occupation, it is not conducive to module miniaturization.

This invention relates to the field of digital image processing technology, and discloses a digital image processing method and system for video. The method involves: acquiring multiple image data streams and performing coordinate transformation and spherical projection to obtain a panoramic stitched image; extracting a preset set of bounding boxes from the panoramic stitched image and performing target recognition to obtain a first detection position of the ball target and a second detection position of the player target; calculating the first real-time position and first velocity of the ball target, and calculating the second real-time position and second velocity of the player target; determining the center coordinates and screen range of the broadcast view, and generating an automatically directed video stream based on the center coordinates and screen range of the broadcast view. This invention effectively solves the stitching seam problem caused by depth parallax in traditional panoramic stitching algorithms based on feature point matching by fixing and calibrating feature points on the court surface and utilizing the single-plane characteristic of the court surface.

The application belongs to the technical field of pressure flow detection devices, in particular to a tap water pipe network pressure flow detection device, which comprises an ultrasonic flowmeter; further comprising: a connecting mechanism comprising two symmetrical connecting frames fixedly installed on the ultrasonic flowmeter, a plurality of first elastic balls are fixedly installed in the connecting frame, and a movable clamping plate in the connecting frame is fixedly connected with the plurality of first elastic balls; through the designed structure, the detection place of the tap water pipe is quickly cleaned, the cleaning structure and the clamping structure are integrated, convenience is realized, the staff does not need to carry cleaning tools additionally, the detection precision of the ultrasonic flowmeter is improved through pre-cleaning. Meanwhile, the coupling agent is integrated into the storage frame of the ultrasonic flowmeter, and the coupling agent can be uniformly applied to the ultrasonic flowmeter through simple up-down movement.

The invention relates to the technical field of textile fabric detection, in particular to a defect detection device for textile fabric processing, which comprises a rack, a first conveying roller assembly and a second conveying roller assembly, the first conveying roller assembly comprises a first top conveying piece rotationally arranged at the top of the rack and a first bottom conveying piece rotationally arranged at the bottom of the first top conveying piece. The second conveying roller assembly can slide along the rack and is matched with the linkage control of the elastic supporting piece, the photoelectric proximity switch and the metal plate induction piece, the fabric tension degree can be automatically adjusted, the moving speed of the fabric is kept consistent with the rotating speed of the conveying rollers through the transmission fit of the driving motor and the conveying rollers, and the fabric tension degree can be automatically adjusted. The fabric between the first conveying roller set and the second conveying roller set is always in a proper tensioning state, wrinkles caused by fabric looseness are avoided, and the defect detection accuracy is further improved.

This utility model belongs to the technical field of stacker cranes, specifically relating to an anti-sway structure for stacker cranes. It includes a guide rail, a gantry mounted on the outer side of the guide rail, a lifter mounted on the vertical part of the gantry, a loading frame mounted on the end face of the lifter, an anti-sway mechanism mounted on the gantry, a fixed plate fixedly connected to the bottom inner side of the gantry, a guide rod fixedly connected to the inner wall of the fixed plate, a moving block slidably sleeved on the outer side of the guide rod, the moving block slidably connected to the fixed plate, and a spring mounted on the outer side of the guide rod. This utility model, through the action of the rubber disc, spring, and other structures, can limit the movement of the gantry and reduce vibration, thereby reducing the gantry's swaying problem. Under the action of damping holes, damping rods, elastic elements, and other structures, the excess deformation stress generated by spring can be worn away, avoiding excessive vibration of spring and other components.

The application provides a battery test tool and a battery test system. The battery test tool comprises a limiting piece, a mounting piece and a positioning piece. The limiting piece is used for limiting a battery to be tested; the mounting piece and the positioning piece are located on both sides of the limiting piece in a first direction, the mounting piece has a first mounting part and a second mounting part which are spaced apart, the first mounting part is used for mounting a positive probe, and the second mounting part is used for mounting a negative probe; at least one of the mounting piece and the positioning piece is slidable relative to the limiting piece along the first direction to push the battery to be tested, so that a positive electrode of the battery to be tested abuts against the positive probe and a negative electrode of the battery to be tested abuts against the negative probe. By using the battery test tool as an interface component for connecting a test device and a battery to be tested, the detection efficiency of the battery to be tested can be improved, the alignment accuracy of the positive and negative electrodes of the battery and the positive and negative probes can be improved, and thus the accuracy of the detection result can be improved.

This invention discloses a wiper connection assembly, comprising a plastic mounting base and a connecting base made of thin steel plate. The mounting base is a single integral component with a longitudinally penetrating mounting channel. Two limiting protrusions are respectively provided on the upper part of both sides of the mounting base in the longitudinal direction at intervals. The connecting base is composed of a connecting part and a base from top to bottom. The base includes a base plate and a pair of downwardly folded side guides formed from the front and rear parts of both sides of the base plate. Each side guide extends a tab that is offset in height from the limiting protrusions. When the tab is in the outward folded state, it will not interfere with the limiting protrusions in the height direction. When the tab is pressed by an external device and is flush with the side guides, the tab at least partially abuts against the limiting protrusions and interferes with the limiting protrusions in the height direction. The wall thickness of the connecting base is in the range of [1.0mm-1.4mm].

The application relates to the technical field of wire cutting equipment, and discloses a wire cutting machine for die manufacturing, which comprises a base, a machining box fixedly connected to the top front side of the base, a rack fixedly connected to the top rear side of the base, an adjusting mechanism arranged on the front side of the rack, a shell, a motor one fixedly connected to the right side of the shell, an output end of the motor one penetrating through the shell and fixedly connected with a cam, a bottom plate fixedly connected to the bottom of the inner side of the shell, and a damping hydraulic cylinder fixedly connected to the top of the bottom plate. The motor drives the cam to rotate, the cam cooperates with the frame to flexibly adjust the tension of the wire electrode, and the damping hydraulic cylinder and the spring one can effectively absorb the high-frequency micro-vibration of the wire electrode caused by the impact force in the discharge machining moment, so that the tension fluctuation is controlled within a very small range.

The utility model discloses a wire drawing device for plastic woven bag production, and relates to the technical field of wire drawing devices, the wire drawing device comprises a heating table and a lifting groove formed in one end of the heating table, two sides of the upper end of the heating table of a material guide roller are fixedly connected with baffles, and two sides of the middle part of one end of the heating table are fixedly provided with L-shaped bearing plates through bolts; through the cooperation of the electric telescopic rod, the U-shaped fixing base and the guide roller, flexible adjustment is facilitated according to parameters such as the thickness and tension of a filament, the convenience and accuracy of position adjustment of the guide roller are improved, the function of stably guiding the filament can be achieved, and through the cooperation of the material guide roller and the guide roller, the production efficiency is improved. According to the wire drawing device for plastic woven bag production, deviation and shaking of wires in the conveying process are conveniently prevented, the wire conveying stability is improved, then the function of ensuring the uniformity of the wires can be achieved, and finally the problem that according to an existing wire drawing device for plastic woven bag production, the wires are prone to deviation and shaking, and the uniformity is affected is solved.

This invention discloses a surgical robot and a method for inserting an endoscope into the surgical robot. The robot includes an outer tube with a channel for accommodating an endoscope. The endoscope is detachably connected to the outer tube. The surgical robot also includes a connecting part, which is positioned corresponding to the channel. One end of the connecting part is connected to the outer tube, and the other end is used to connect to the endoscope. When the endoscope and the outer tube are connected via the connecting part, both the endoscope and the outer tube can be operated by the same person. By using the connecting part, when using a separate outer tube and endoscope, an additional assistant is no longer needed to hold the endoscope. Compared to operating the endoscope and outer tube by different personnel, when operated by the same person, the endoscope and outer tube work together to keep the target position within the line of sight, avoiding unexpected movements such as lens shake, twisting, and shifting that may occur when an assistant holds the endoscope, thus reducing the difficulty and threshold of diagnosis and treatment.

This application discloses a self-adjusting transmission device for a circular vibrating screen, relating to the field of circular vibrating screen technology. The application includes a frame, a motor mounted on the frame, and a second coupling mounted on the vibrator. A first pulley is mounted on the output shaft of the motor. A bearing housing is mounted on the frame, and a main shaft rotatably passes through the bearing housing. Two spaced-apart roller bearings are disposed between the bearing housing and the main shaft. The second pulley and the first coupling are mounted on the main shaft. This application abandons the direct V-belt connection transmission method of the prior art. In use, the V-belt transmission drives the main shaft and the first coupling to rotate together, causing multiple rubber belts to move and deform. Through the pulling action of the multiple rubber belts, the second coupling rotates, enabling the vibrator to operate. Because the second coupling and the first coupling are transmitted through multiple rubber belts, their connection is close to flexible.

The application relates to the technical field of twisting machines, and discloses a double-twist energy-saving spindle device, which comprises a box body, a twisting component is installed on the box body, a power assembly is installed in the box body, the power assembly drives the spindle body to rotate through a dragon belt, a stabilizing assembly and a tensioning wheel are installed on the box body, and the stabilizing assembly and the tensioning wheel are driven by a driving assembly, the stabilizing assembly comprises a fixed table, a gear disc is rotatably installed at the bottom of the fixed table, an inner side fixed roller and an outer side fixed roller are slidably installed in the fixed table, and the dragon belt is clamped between the inner side fixed roller and the outer side fixed roller. If the dragon belt needs to be adjusted and tightened, a motor two drives a screw rod to rotate, at this time, a guide block drives the tensioning wheel to adjust and tighten the dragon belt through a connecting rod. In the process, the inner side fixed roller and the outer side fixed roller clamp the dragon belt in the middle, the contact area of the fixed dragon belt and the spindle body is fixed, the wrap angle is fixed, the lateral displacement of the dragon belt is limited, and the dragon belt is prevented from causing belt shaking under the action of high-speed centrifugal force.