28results about How to "Realize precise adjustment" patented technology

The invention relates to an equipment performance intelligent detection technology, and particularly discloses a circuit breaker arc extinguish chamber arc extinguish performance detection method, which realizes optimal design of arc extinguish performance parameters of an arc extinguish chamber and reduces possible safety risks in an arc extinguish process. Comprising the steps that a magnetofluid simulation model based on magnetofluid dynamics is built, historical arc parameters in an arc extinguishing chamber are collected to serve as test sample input, and an arc extinguishing simulation model is obtained through updating; carrying out analogue simulation according to the arc extinguishing simulation model and outputting simulation images of magnetic field changes and current changes of different monitoring points in the arc extinguishing chamber; analyzing the simulation images of the magnetic field change and the current change of different monitoring points in the arc extinguish chamber to judge whether the simulation arc form change state value meets the requirement or not; performing matching detection on the simulated arc form change state value meeting the requirement and a preset standard arc chamber structure parameter; performing optimization and simulation parameter correction on the arc extinguishing simulation model, and adjusting physical parameters and boundary condition setting in the model.

The invention relates to the technical field of optical devices, in particular to a mirror surface adjusting device which comprises a rack. The adjusting assembly is rotationally connected to the rack and used for bearing the mirror surface, the adjusting assembly has two rotational degrees of freedom, and the two rotational central axes of the adjusting assembly intersect on a first plane; the driving assembly is movably connected to the rack, the output end of the driving assembly is movably connected with the adjusting assembly, the driving assembly drives the adjusting assembly to rotate in a centering mode, and the center of the mirror surface is overlapped with the rotating center of the adjusting assembly. Therefore, the adjustment accuracy and stability of the reflection angle are ensured, the influence of tiny deviation on the propagation path of the laser beam is reduced, the reflection angle of the laser beam is accurately adjusted by ensuring the constant position of the center point of the mirror surface in the rotating process, and the requirement of high-precision optical application is met.

The invention relates to the technical field of electronics, in particular to a multichannel active noise reduction algorithm testing device based on a synchronous acquisition card, which comprises a signal generation module used for generating a test signal, an output module used for outputting the test signal and acquiring a recovery signal, and a loudspeaking module used for outputting a corresponding audio frequency, the system comprises an acquisition module used for acquiring audio and main noise in the environment and generating an acquisition signal, a synchronization module used for synchronizing the signal, a noise reduction module used for generating an anti-noise signal, an analysis module used for judging whether the noise reduction effect is qualified or not, judging the reason for not meeting the standard and generating a corresponding processing instruction, and a processing module used for processing the processing instruction. And the control module is used for adjusting the operation parameters of the parts in the corresponding module to corresponding values. The problem of signal delay caused by testing equipment is solved, the effect after noise reduction is monitored in real time, the operation parameters of the noise reduction device are accurately adjusted based on the effect after noise reduction, and the operation efficiency of the active noise reduction device is improved.

The present invention relates to the technical field of grouting effect detection, and discloses a method, system, medium and equipment for detecting grout vein distribution after grouting of rock and soil bodies, including: drawing wave velocity contour lines in three-dimensional space for the grouting area before and after grouting; comparing the wave velocity contour lines before and after grouting, obtaining the wave velocity abnormal area, and then inverting to form a slurry three-dimensional distribution model according to the wave velocity abnormal area; wherein, the drawing step of the wave velocity contour lines in three-dimensional space includes: calculating the wave velocity through the coordinate difference and time difference between the transmitter and the receiver, and establishing a three-dimensional wave velocity vector, discretizing the grouting area into equidistant wave velocity points, using the distance from the wave velocity point to the straight line where the wave velocity three-dimensional vector is located as a weighting factor, weighting and distributing the wave velocities in different directions, obtaining the wave velocity corresponding to each wave velocity point, and drawing the wave velocity contour lines in three-dimensional space. It can realize three-dimensional imaging detection of grouting effect, and has the advantages of wide coverage area and high detection accuracy.

The invention discloses a dynamic partitioning method and device for a power distribution network, electronic equipment and a storage medium, and the method comprises the steps: obtaining a scheduling plan of a typical day, inputting the scheduling plan into a power distribution network partitioning model, generating a first partitioning scheme of each scheduling moment, judging whether the voltage of each node at the first scheduling moment exceeds a preset range or not, and if yes, generating a second partitioning scheme; if the index exceeds the preset range, the index weight is adjusted to update the power distribution network partition model, a second partition scheme at the first scheduling moment is generated, and an actual partition scheme at the first scheduling moment is determined by comparing the score difference of the two partition schemes; and for other subsequent scheduling moments, determining an actual partition scheme of the current scheduling moment based on a difference value between the actual partition score and the actual partition score of the previous moment. By implementing the method, dynamic partitioning of the power distribution network can be realized, and the operation efficiency and reliability of the power distribution network are improved.

The utility model relates to the technical field of lens surface type detection tools, in particular to a multi-degree-of-freedom fine adjustment tool for lens surface type detection, which comprises a base, the top of the base is fixedly connected with the bottom of a driving part through a bolt, the top of the driving part is fixedly connected with the bottom of a flexible part through a bolt, and the flexible part is fixedly connected with the bottom of the flexible part through a bolt. The inner wall of the driving part is fixedly connected with the outer walls of the connecting parts, the number of the flexible parts and the number of the connecting parts are both three, the three flexible parts and the three connecting parts are all distributed in a circumferential array shape along the center axis of the driving part, and the first driving motor and the second driving motor are started when the supporting flange is finely adjusted; the three flexible blocks are pushed to deform through the three first driving motors and the three second driving motors correspondingly, the three flexible blocks drive the three fine adjustment blocks to move correspondingly, the three fine adjustment blocks drive the supporting flange to conduct fine adjustment, precision adjustment of the target position is achieved, the supporting flange can achieve nano-scale precision adjustment, and convenience is brought to use of people.

The utility model belongs to the technical field of lens positioning, and particularly relates to a lens positioning mechanism for metrological verification of an optometry lens box, which comprises a base, threads on a first lead screw are symmetrical and opposite in direction, and a first sliding block and a second sliding block are symmetrically assembled in a sliding groove. A first clamping plate is rotatably mounted on the first supporting rod through a bearing, a protractor is fixedly mounted on the rear wall of the first supporting rod, a pointer is fixedly mounted on the rotating rod, a worm gear fixedly sleeves the rotating rod, an angle adjusting knob is welded to one side of the worm, and the first clamping plate is driven by the rotating rod to rotate. The first clamping plate drives the lens to rotate, and the lens drives the second clamping plate to rotate, namely the first clamping plate, the second clamping plate and the lens synchronously rotate, so that angle adjustment of the lens is realized, various parameter performance detection on the lens is facilitated, continuous disassembly and assembly of the lens are avoided, damage to the lens is reduced, and meanwhile, verification steps are simplified; and the positioning convenience can be improved.

The present invention discloses an adjustable bending die head, bending mold, use method and processing method, which belong to the field of mechanical manufacturing. The bending die head of the present invention comprises: a support frame, a servo motor arranged above the support frame, a ball screw pair connected to the output end of the servo motor, an adjustment block arranged on the nut of the ball screw pair, and a guide rod arranged on the side of the support frame, wherein the adjustment block is provided with a guide sleeve, and the guide sleeve is slidably mounted on the guide rod. The guiding accuracy of the adjustment block is improved by the sliding cooperation between the guide sleeve and the guide rod. A cushion block and a module are arranged at the lower end of the adjustment block to avoid the wear of the adjustment block during production, thereby reducing the replacement frequency of the adjustment block and saving time and labor. The use method of the present invention can accurately adjust the die head with high adjustment accuracy; the processing method of the present invention can process the key components of the die head, and the processed parts have high accuracy, thereby improving the accuracy of the die head and the mold.

The utility model discloses an auxiliary fixing mechanism for blood drawing, which relates to the technical field of medical instruments and comprises an equipment box, a fixed range adjusting component is arranged in the equipment box and comprises a driving motor arranged in the equipment box, and a transmission rod is arranged at the output end of the driving motor. The side, away from the driving motor, of the transmission rod is fixedly connected with a rotating disc, the side edge of the rotating disc is rotationally connected with a first coupling, the side, away from the rotating disc, of the first coupling is in transmission connection with a sliding block, a second arm fixing plate is arranged above the sliding block, and the driving motor operates to enable the second arm fixing plate to be converted into a moving state from a static state. By means of the design, automatic adjustment of the arm fixing position is achieved, the design fully considers the body type difference of children of different age groups, especially the different arm lengths, so that accurate adjustment of the arm fixing range is achieved, and the self-adaptive adjusting function greatly improves the fixing efficiency and the working efficiency; and the device can be suitable for people with different body types.

This invention discloses a method for precise tension control in the winding process of low rolling resistance tires, relating to the field of tire manufacturing technology. It aims to solve the problem of uneven rubber distribution and reduced rolling resistance caused by inaccurate tension control during the tread winding process in existing technologies. The method includes the following steps: S1, integrating a high-response sensor network into the independent tension actuator of each winding feeding unit. The high-response sensor network includes a release tension sensor, a conveying tension sensor, and a bonding tension sensor, corresponding to the three processes of rubber strip conveying, release, and bonding, respectively, to collect the instantaneous tension value of the rubber strip throughout the entire process in real time; S2, based on the material properties of the rubber strip and its motion state during the winding process, establishing a material rheology-tension coupling model through indoor experiments on the correlation between the rheological properties of the rubber strip and tension changes under different working conditions. This invention has the advantage of achieving adaptive adjustment of the rubber strip tension.

The utility model relates to the technical field of geological engineering surveying and mapping, in particular to a surveying and mapping instrument positioning device for geological engineering surveying and mapping, which comprises a mounting seat, three rotating strips are rotatably connected to the side wall of the mounting seat, supporting legs are slidably connected to the interiors of the rotating strips, and adjusting structures are arranged on the surfaces of the supporting legs. Each adjusting structure comprises a sliding plate connected into the corresponding supporting leg in a sliding mode, the lower end of each sliding plate is fixedly connected with a plug, the lower end of each plug is of a tip structure, a plug pin penetrates through the side wall of each rotating strip in a sliding mode, an inserting hole is formed in the side wall of each supporting leg, and the size of each plug pin is matched with the size of each inserting hole. The side wall of the plug pin is fixedly connected with a baffle ring, and the surface of the plug pin is sleeved with a spring. According to the surveying and mapping instrument adjusting device, the surveying and mapping instrument can be rapidly and accurately placed conveniently by arranging the adjusting device and adjusting the support at the bottom of the surveying and mapping instrument twice, and the adjusting efficiency of the surveying and mapping instrument is improved to a certain extent.

The utility model relates to mechanical engineering technical field discloses a butt joint device for angle steel production, including fixed plate, the front side middle part fixed connection of fixed plate has hollow block, the rear side middle part fixed connection of fixed plate has installation box, the inner wall left side of fixed plate is provided with clamping mechanism, the clamping mechanism is used for clamping and angle adjustment to angle steel, the inner wall right side of fixed plate is provided with conveying mechanism, the conveying mechanism is used for transporting to angle steel, the clamping mechanism includes rotating shaft, the outer wall of rotating shaft and the inner wall middle part top of fixed plate rotatory connection, the outer wall left side of rotating shaft is fixedly connected with rotating plate. In the utility model, motor no.

The utility model relates to steel cord production technical field, more particularly to the adjusting tool for steel cord quenching groove, include: support, the top of support is equipped with support structure, transmission cylinder, outside wall is equipped with track, track connects to support structure, transmission cylinder's first end is set to with the connecting end that waits for the nut cooperation, second end is set to the operating end that supplies user operation, the connecting end includes the screw -sleeve cooperation with nut, operating end includes hand wheel, the adjusting tool that the utility model puts forward includes support and transmission cylinder, transmission cylinder can be flexibly removed on support, make transmission cylinder's end move to ideal position, transmission cylinder's one end is hand wheel, the other end is screw -sleeve, can accurately control screw -sleeve's rotation through the rotation of hand wheel, can long -range control the nut on quenching groove, avoid the discomfort that heat source causes to operating personnel, realize accurate adjustment to the nut on quenching groove.

The utility model discloses a kind of big span crossbeam guide rail micro-deformation adjustment structure and adjustment system, above-mentioned adjustment structure includes unloading plate, draw plate, screw rod and nut, draw plate is installed in the middle region of crossbeam side, unloading plate is located in the side of draw plate, unloading plate is installed on crossbeam side, one end of screw rod is installed on unloading plate, the other end of screw rod extends through draw plate and is spirally connected on nut after.The adjustment system provided by the utility model can realize the fine adjustment of the bending degree and the torsion overturning deformation of the crossbeam guide rail, to improve the linearity of the crossbeam guide rail. Compared with the prior art, the adjustment system realizes the precision adjustment of the guide rail under the assembly state of the crossbeam, avoids the reprocessing of the crossbeam guide rail, improves the efficiency while reducing the cost. In addition, the adjustment system also solves the problem of the existing technology difficult to improve the forward deformation of the crossbeam guide rail, can obviously improve the linearity of the crossbeam guide rail in two directions.

The utility model relates to the technical field of heating furnaces, and discloses a table type heating furnace door processing and tapping device which comprises a bottom plate, the top of the bottom plate is fixedly connected with a first supporting frame, the top of the bottom plate is fixedly connected with two supporting blocks, the top of the first supporting frame is fixedly connected with a first double-shaft air cylinder, and the top of the first double-shaft air cylinder is fixedly connected with a second double-shaft air cylinder. A piston rod of the first double-shaft air cylinder penetrates through the first supporting frame and is fixedly connected with a first fixing plate, the bottom of the first fixing plate is fixedly connected with two fixing frames, and one side of each fixing frame is provided with an inclined face. The first fixing plate, the fixing frame, the inclined face, the connecting plate and the clamping block are used in cooperation, so that the furnace door is rapidly fixed, the first linear motor and the second linear motor are started to drive the drill bit to move to the proper position in the left-right and front-back directions, and therefore accurate positioning of the drill bit is achieved; the time-consuming and labor-consuming problem of drilling and moving the furnace door is avoided

The utility model relates to the technical field of coating processing, and discloses a discharge structure of a coating reaction kettle, which comprises a kettle body, a discharge pipe arranged at the bottom of the kettle body in a communicated manner and an adjusting rod rotationally arranged in the discharge pipe along the horizontal direction, adjusting plates are symmetrically arranged on the adjusting rod, and when the adjusting plates are in the horizontal direction, the discharge pipe can rotate along the horizontal direction. The end portions of the adjusting plates are movably attached to the inner wall of the discharging pipe, one end of the adjusting rod is located on the outer side of the discharging pipe, a first adjusting gear is vertically arranged at the end portion of the adjusting rod, and an adjusting mechanism used for adjusting the rotating angle of the first adjusting gear is arranged on the outer wall of the discharging pipe. The discharging device has the advantages that the discharging flow can be accurately adjusted, and the universality of the discharging device is improved.

The utility model discloses a cloth cutting device for jacket production relates to cloth cutting technical field, including cutting device main part, the inside of cutting device main part is installed with cloth conveying assembly, and cloth conveying assembly is used for conveying the cloth for jacket production, cloth conveying assembly includes the fixed plate of installation in the inside of cutting device main part, the inside of fixed plate is connected with cutting table, and the surface of mutual approach of fixed plate is connected with the support cylinder, and two groups of support cylinder are located cutting table's both sides respectively, the inside of cutting device main part is provided with servo motor three and servo motor four, and the output of servo motor three and servo motor four is connected with conveying cylinder no.

The invention discloses an assembling and adjusting method of an optical intracranial pressure monitoring device and the optical intracranial pressure monitoring device. The assembling and adjusting method comprises the steps that S1, a detection light source is connected; the optical fiber port assembly is installed and adjusted, so that a light spot of emergent light of the light path outlet meets a first preset requirement; s2, the optical wedge assembly is pre-placed, so that interference fringes generated when the emergent light passes through the optical wedge assembly meet a second preset requirement; s3, the optical wedge assembly and the light beam shaping assembly are matched, so that interference fringes generated when the emergent light passes through the optical wedge assembly meet a third preset requirement; s4, the CCD data acquisition and processing module is installed and adjusted until a related interference signal is received; according to the assembling and adjusting method, the precision requirement of key components including the F-P optical fiber sensor and the optical wedge assembly is lowered, and the optical intracranial pressure monitoring device based on the Fizeau interferometer can be produced in an engineering and batch mode through the assembling and adjusting steps.

The utility model discloses a building steel structure bending device, which belongs to the technical field of building steel structure bending devices, and is characterized by comprising a top plate, the top of the top plate is fixedly connected with a limiting assembly and a fixing block, and the interior of the fixing block is fixedly connected with a first electric telescopic rod. The left side of the first electric telescopic rod is fixedly connected with an extrusion block, and the bottom of the top plate is fixedly connected with a supporting assembly. And the limiting assembly comprises a first adjusting block, the top of the first adjusting block is fixedly connected with a connecting block, and the top of the connecting block is fixedly connected with a second adjusting block, so that the problems that most existing devices for bending the steel structure are inconvenient to bend the U-shaped steel structure, most existing bending structures are cylindrical, and the bending efficiency is high can be solved. The problems that when a U-shaped cylinder is bent, the U-shaped cylinder cannot be attached to U-shaped steel, and deformation of the U-shaped steel is possibly caused under the bending condition are solved.

The present application relates to the field of preparation of bio-based multi-level pore carbon material and environmental governance, in particular to a kind of bio-based three-dimensional multi-level pore carbon material and its preparation method and application.The preparation method of bio-based three-dimensional multi-level pore carbon material of the present application includes the following steps: biomass raw material and phenol, composite acid catalyst are mixed and reacted 1, to obtain bio-based liquefied material;Bio-based liquefied material is mixed with composite base catalyst and polyformaldehyde, and then reacted 2, to obtain bio-based liquefied resin;Bio-based liquefied resin is mixed with surfactant, foaming agent, metal-based DES and curing agent, and then foamed, to obtain carbonization precursor;The carbonization precursor is subjected to carbonization treatment, and then ultrasonic water washing is carried out, to obtain bio-based three-dimensional multi-level pore carbon material.The bio-based three-dimensional multi-level pore carbon material prepared by the method of the present application has uniform structure, contains micron-nanometer multi-level pore structure, and has high adsorption performance.

The invention discloses a transfer arm device for hoisting a multi-layer nested reflector. The transfer arm device comprises a base, a rotary lifting assembly, a transfer arm, a suspension assembly and a flexible clamping assembly. The lower end of the rotary lifting assembly is installed on the base, and the transfer arm is installed at the upper end of the rotary lifting assembly which is used for driving the transfer arm to ascend, descend and rotate. The transfer arm is of a cantilever structure, the tail end of the transfer arm is connected with the flexible clamping assembly through the suspension assembly, and the suspension assembly drives the flexible clamping assembly to ascend and descend relative to ascending and descending of the transfer arm. And the flexible clamping assembly is used for flexibly adsorbing and clamping the reflecting mirror. The invention further discloses a transfer method for hoisting the multilayer nested reflector based on the device. According to the device, various specifications of reflectors with different diameters, heights and focal lengths can be suspended, lifted and transferred, the device is convenient to operate, man-machine cooperative lifting is achieved, the assembly precision is high, and the structure is reliable.

The utility model discloses a swing type automatic spraying device for spraying processing, including the connecting frame, the connecting frame bottom fixed connection has the transverse board, the transverse board both ends all rotationally connected have the rotation column. The utility model in the process of actual use, the fixed plate on the reciprocating motor no.

The present invention relates to the field of assembly technology, and in particular to a control method and control system for a multi-degree-of-freedom AI intelligent posture adjustment device, the method comprising: a central control module adjusts the detection parameter sending frequency of the detection module to a corresponding value according to the difference between the average error rate in the historical posture adjustment process and the preset error rate average; the central control module adjusts the number of measurement points of the posture adjustment component to be adjusted according to the difference between the actual number of edges and corners and the preset number of edges and corners; the central control module obtains the original posture and coordinates of each point to be constructed by the posture adjustment; the central control module adjusts the posture adjustment speed according to the actual component impact force; the central control module adjusts the unit angle feedback adjustment times to a corresponding value according to the difference between the actual posture adjustment time and the preset posture adjustment time. Detection module, data preprocessing module, central control module and control module. The present invention realizes the control accuracy of the posture adjustment process and improves the posture adjustment efficiency.

The invention provides a liquid flow standard device detection system and a detection calibration method, which are widely applied to the technical field of standard device detection. The system comprises a fluid circulation unit, a measurement and control unit, a backflow unit, a detection area and a detection branch unit, a main detection pipeline is arranged in the detection area, the main detection pipeline in the detection area is provided with a plurality of instrument mounting positions and supports parallel detection of a plurality of detected flowmeters, the detection branch unit comprises a plurality of detection branches with different nominal calibers, and branch assemblies are matched with the calibers; the measurement and control unit comprises a PLC, a data acquisition module and an upper computer, the upper computer is integrated with a multifunctional module, and parameter configuration, qualification judgment, coefficient correction and data traceability are achieved. According to the invention, multi-caliber branches are adapted to multi-specification instruments, multi-instrument parallel detection improves efficiency, temperature and pressure compensation guarantees precision, and automatic control and data traceability meet standardized requirements.

The application relates to the field of engineering machinery and discloses a rust removal operation machine, which comprises a main arm frame, a slewing support arranged at the end of the main arm frame and driven to rotate by a slewing reduction mechanism, a cleaning mechanism comprising a cleaning disc connected to the slewing support through a cleaning connecting rod, an angle sensor for detecting the real-time rotating angle of the slewing support, a compensation oil cylinder hydraulic circuit comprising a compensation oil cylinder and an electric proportional overflow valve arranged in the working oil path of the rodless cavity of the compensation oil cylinder, one end of the compensation oil cylinder being hinged to the slewing support and the other end being hinged to the cleaning connecting rod to support the cleaning connecting rod in luffing, and a controller for adjusting the current size of the electric proportional overflow valve according to the size of the detected real-time rotating angle of the slewing support in a cleaning operation mode. The rust removal operation machine can automatically maintain the cleaning disc in a state of adhesion to a wall surface to be cleaned, thereby improving the rust removal effect.

The utility model relates to the technical field of nursing chairs, and discloses a nursing chair which comprises a moving trolley, a seat is arranged on the top face of the moving trolley, a PLC is fixedly installed on one side of the moving trolley, the nursing chair further comprises an adjusting assembly, the adjusting assembly is arranged on the top face of the moving trolley and used for adjusting the position of the seat, and the PLC is fixedly installed on the other side of the moving trolley. The adjusting assembly comprises a first supporting plate, the first supporting plate is arranged on the top face of the moving trolley, through mutual cooperative use of the arranged moving trolley, the seat, the first supporting plate, a T-shaped plate, a T-shaped hole and a first threaded column, precise adjustment of the position of the seat is achieved, through height and front-back adjustment, the seat is made to be matched with or placed on the bed surface, and the position of the seat is adjusted. Nursing personnel help a patient to sit on the seat, the patient does not need to get out of the bed or manually lift the patient, large strength is not needed, meanwhile, manual lifting operation is not needed, strength is saved, and the nursing bed is practical and convenient to use.

The invention discloses a wind power plant reactive power coordination optimization method and device, and the method comprises the steps: carrying out the reactive power optimization calculation through employing a particle swarm algorithm based on the reactive power regulation capability of an on-load voltage regulation transformer and a capacitor bank of a wind power plant according to a day-ahead reactive power optimization model, obtaining the optimal switching value of the on-load voltage regulating transformer and the optimal switching value of the capacitor bank; and performing reactive power optimization calculation by adopting a particle swarm algorithm according to an intra-day reactive power optimization model on the basis of the reactive power regulation capability of the wind power plant fan and the network construction type energy storage system, the optimal switching value of the on-load tap changing transformer and the optimal switching value of the capacitor bank, so as to obtain the optimal switching value of the wind power plant fan and the network construction type energy storage system. Through the day-ahead-day combined multi-time-scale reactive power optimization control strategy of the wind power plant, accurate adjustment of reactive power resources of the wind power plant based on network construction type energy storage and dynamic balance of the system are achieved, and the voltage adjustment requirement of the wind power plant is met.

The utility model discloses an intelligent integrated finish rolling screw-down adjusting device which comprises a three-dimensional square cover, an upper transmission roller, a lower transmission roller, a connecting rod, a steering lap joint piece, a rod end connecting piece and a power pressing rod, the upper transmission roller and the lower transmission roller are arranged in the three-dimensional square cover in an up-down opposite mode, the connecting rod is horizontally arranged, and the steering lap joint piece is connected with the rod end connecting piece. One end of the connecting rod is connected with the end of the upper transmission roller through the steering lap joint piece, and the end, away from the steering lap joint piece, of the connecting rod is connected with the power pressing rod through a rod end connecting piece. The connecting rod is rotated through the power pressing rod, the connecting rod is in linkage with the steering lap joint piece and the upper transmission roller so that the lower transmission roller can be pressed downwards, the steering lap joint piece is an intelligent steering connection interface, intelligent smooth connection of pressure conduction is achieved, higher intelligence is achieved, adjustment is convenient, the rolling rhythm does not need to be pulled open, and the production efficiency is improved. Therefore, the production efficiency is improved.