103results about How to "Accurate guidance" patented technology

The invention belongs to the technical field of federated learning, and particularly relates to a federated learning method and device based on feature comparison optimization and classifier dynamic integration. The method comprises the steps that a global model is initialized through a server and issued to # imgabs0 clients participating in federated learning, the clients conduct local model updating based on the received global model and train the updated local model, then feature extraction is conducted on a local private data set through a trained local feature extractor, and a local private data set is obtained; the method comprises the following steps: constructing a local model to construct a local feature prototype set, uploading the local model, the local feature prototype set and the total sample size of a client to a server, using a contrast learning technology to improve the quality of a global feature prototype when the server globally aggregates, and finally issuing a global prototype and a global feature prototype set which are obtained by aggregation to each client. And executing the next round of learning until the local model converges or reaches the set communication round.

The invention discloses a continuous fiber reinforced co-extrusion die, a forming line body and a fiber reinforced foaming floor, and relates to the technical field of foaming floors, the continuous fiber reinforced co-extrusion die comprises a die body, the front end face and the rear end face of the die body are a mixed extrusion face and a core material feeding face respectively, and one side face of the die body is provided with a shell material feeding port; a core material supply channel penetrating through the mixed extrusion face and the core material supply face is formed in the mold body, a shell material supply cavity surrounding the core material supply channel is formed in the mold body, two fiber channels are formed in the mold body, the two fiber channels are symmetrically arranged up and down, and the fiber channels are arc-shaped bent channels. The forming line body comprises a continuous fiber reinforced co-extrusion die, a core material extruder and a shell material extruder; a shaping module, a vacuum water cooling group, an open type water cooling group and a traction machine are sequentially arranged on the mixed extrusion surface of the mold body. According to the invention, the overall strength and performance of the composite material are optimized, and uniform distribution and orientation of reinforced fibers are ensured.

The utility model discloses a piling device of a piling hammer, and belongs to the technical field of piling equipment. The pile hammer driving device comprises a first driving part, a hollow connector and a second driving part. The first driven part is connected with a pile hammer. The hollow connecting body is connected with the first hitting replacing part in a welded mode. The second driving part is in welded connection with the hollow connecting body and is in contact with the pile during driving. Rail grooves are welded to the side edges of the first driving replacing part, the hollow connecting body and the second driving replacing part which are sequentially welded, and the rail grooves and the pile hammer are located on the same rail. The piling device of the piling hammer is simple in structure and high in mounting and dismounting efficiency, accurate guidance is provided for piling construction through the design of the track grooves, and construction accuracy and construction efficiency are improved.

This utility model relates to the field of indoor monitoring, specifically to an indoor environmental monitoring and detection device, including a base and a detection device body. The upper surface of the base has multiple mounting holes and a convenient assembly / disassembly mechanism. This mechanism includes an installation component, two disassembly components, and two positioning components. The installation component includes a first mounting seat fixedly connected to the bottom surface of the base, and a second mounting seat slidably connected within the first mounting seat. This utility model, through its installation component, enables rapid installation between the detection device body and the base; through its disassembly components, it enables rapid disassembly of the detection device body; and through its positioning components, it provides precise guidance for the sliding of the second mounting seat, preventing rotation after installation and further improving the stability of the device, ensuring stable operation of the detection sensor.

This invention relates to the field of automated warehousing technology and discloses an automated storage and retrieval system (AS / RS) based on a heavy-duty stacking robot. A material storage area is located on one side of the material entry / exit area, and a preparation and charging area is located on the other side. An import / export docking area is located inside the material entry / exit area, and a lifting and transferring machine is also included within the import / export docking area. An automated storage and retrieval system with a three-dimensional racking mechanism is located inside the material storage area. This AS / RS based on a heavy-duty stacking robot, through its modular architecture and intelligent collaborative design, effectively solves the problems of low space utilization, high cost, and poor flexibility in traditional AS / RS. It achieves precise and efficient handling of heavy-duty goods, eliminates the need for dedicated tracks, reduces modification costs, and significantly improves the overall automation level, space utilization, and operational stability of warehousing operations. It caters to both new construction and renovation needs, providing enterprises with a low-cost, highly adaptable heavy-duty warehousing solution.

The application discloses a non-Newtonian fluid elastic auxiliary support clamp and belongs to the technical field of machining clamps. The clamp comprises a bottom plate provided with arrayed stepped mounting holes, an elastic auxiliary support assembly, a fixed support assembly and a pressing assembly. The upper section of the mounting hole is a smooth hole, and the lower section is a threaded hole; the elastic auxiliary support assembly comprises a non-Newtonian fluid medium filled in the hole, a compression spring arranged at the bottom and an elastic support nail in the shape of a stepped shaft. The fixed support and the pressing assembly are fixed in the mounting hole through threads. The application utilizes the shear thickening characteristic of the non-Newtonian fluid, and under the action of a milling impact force, the medium is instantaneously solidified to generate rigid support, thereby effectively inhibiting machining vibration and tool relief deformation of the overhanging part of a thin-walled plate part. The application has the advantages of simple structure, low cost, good universality and adaptability to multi-variety and small-batch production.

The utility model discloses a door lock with a manual unlocking structure, which relates to the technical field of door locks, and comprises a lock shell, a cam, a manual unlocking mechanism, a manual unlocking mechanism, a manual unlocking mechanism, a manual unlocking mechanism, a manual unlocking mechanism, a manual unlocking mechanism, a manual unlocking mechanism and a manual unlocking mechanism, and is characterized in that a heart-shaped sliding block is arranged in the lock shell in a sliding manner and has a locking position for locking a cam and an unlocking position for unlocking the cam; and the manual unlocking piece is of a flat plate structure, one face of the manual unlocking piece is parallel to the outer wall face of the lock shell, and the manual unlocking piece is movably arranged on the lock shell and used for driving the heart-shaped sliding block. According to the technical scheme, the manual unlocking piece is of a flat plate structure and is movably arranged in parallel with the outer wall face of the lock shell, space is effectively utilized through the layout, the whole door lock structure is compact, extra space occupation is reduced, miniaturization design of the door lock is facilitated, and the door lock can adapt to various door types and installation scenes.

The invention relates to a capsule type oxygen cabin for animal experiments, which adopts a modular structure, comprehensively considers the influence of multiple factors such as temperature, humidity, pressure and oxygen concentration, and also considers the influence of breathing oxygen consumption of experimental animals and the influence of a first / second accommodating part, and on the basis, the first / second accommodating part is centrally controlled through a touch screen; according to the method, the combination of multiple modes can be realized, so that the climate conditions of different regions can be accurately, efficiently and stably simulated, and accurate and scientific guidance can be provided for the research on'high reflection ', the work and life of personnel in high and cold climate regions and the pathology research of hospitals. Besides, the electrical parts are classified and placed in the first accommodating part, the second accommodating part, the touch screen and the bearing part, so that the cabin body can be transparent and visual, and the electrical parts in the first accommodating part and the second accommodating part are convenient to overhaul through detachable connection between the first partition plate and the second partition plate and the first accommodating part and between the first partition plate and the second partition plate and the second accommodating part.

The application discloses a computer simulation and optimization method for oriented rubber and meat close fitting, and belongs to the technical field of computer aided engineering and virtual simulation. A three-dimensional model of rubber and meat is constructed and material properties are defined, a virtual contact interface is constructed and is discretized into multiple contact units; a finite element analysis engine is used to simulate the rubber deformation process under different candidate pressure distribution modes, and corresponding deformation sequences are generated; the relative displacement between the rubber nodes and the meat nodes at each contact unit is extracted, and the overall fitting degree coefficient is calculated; the candidate pressure distribution mode is iteratively optimized until the optimized pressure distribution mode meeting the convergence condition is obtained, and is output as the target pressure application scheme. The application can automatically find the optimal pressure application scheme for the closest fitting of rubber and meat, effectively replace the traditional process debugging mode relying on experience and repeated experiments, significantly improve the fitting quality and efficiency, and provide accurate computer guidance for the formulation of actual production processes.

The utility model discloses a yarn uniformity lifting mechanism, which relates to the technical field of yarn uniformity lifting, and comprises a base, a motor and a fixed disc are fixed on the base, a rotating disc is fixed on an output shaft of the motor, the rotating disc is arranged in the fixed disc, a rotating groove is arranged in the fixed disc, a lifting block is arranged in the rotating groove, and the lifting block is arranged in the rotating groove. A groove is formed in the fixing disc, a ball is arranged in the groove, the ball is in lap joint with the surface of the lifting block, a rotating shaft is fixed to the rear side face of the lifting block, the surface of the rotating shaft is sleeved with a bearing, a fixing block is fixed to the surface of the bearing, the fixing block is fixed to the fixing disc through a fixing bolt, and yarn penetrates through the lifting block. The lifting device is reasonable in design structure, the lifting block can be driven by the rotating disc to do circular motion, yarn is evenly stressed in all directions when moving, the situation of uneven stress is reduced, the yarn uniformity is remarkably improved, stable lifting block movement is matched with even acting force, and the yarn uniformity is guaranteed.

The utility model discloses a gang saw automatic lubricating device relates to steel production equipment technical field, include: guide component, lubrication supply system and trigger mechanism, and guide component includes guide post and guide sleeve, and the outside of guide sleeve is fixedly connected with saw blade driver, lubrication supply system includes oil reservoir, plunger pump and two lubricating oil pipes, and the oil reservoir is installed in the top of saw blade driver to store lubricating oil, and the plunger pump is installed in the top of oil outlet ware, and the oil inlet of plunger pump communicates with oil reservoir, and the oil outlet of plunger pump communicates with lubricating oil pipe to deliver the quantitative lubricating oil to guide sleeve, trigger mechanism is installed on the guide post to when saw blade driver rises to the top set position, trigger mechanism and plunger pump contact pressurization and make plunger pump supply the quantitative hydraulic oil to guide sleeve, simple structure, convenient to use, realizes the automatic lubrication of gang saw guide sleeve under the condition of not introducing the complex electric control system, effectively improves the stability of gang saw equipment operation.

The invention relates to a remote maintenance assisting method and device and a computer readable storage medium, and belongs to the technical field of remote maintenance, and the method comprises the steps that a head-mounted device collects identification information and a current image of a to-be-maintained device, and sends the identification information to a management platform; the head-mounted device obtains a three-dimensional model sent by the management platform, wherein the three-dimensional model comprises device operation data, maintenance operation steps and maintenance marks of the to-be-maintained device; rendering the three-dimensional model to obtain a three-dimensional model image of the three-dimensional model under the current visual angle of an operator; superposing the three-dimensional model image and the current image to obtain a superposed image of the to-be-maintained equipment; and displaying the superimposed image at a corresponding position of a current user interface, so that an operator maintains the to-be-maintained equipment according to the superimposed image. The method has the effect of improving the equipment maintenance efficiency and accuracy.

The utility model relates to a shoe -pad and shoe sole convenient to dismount, including shoe -pad body and support board, the bottom of shoe -pad body is equipped with the accommodation groove, the support board is placed in the accommodation groove, the front end of above -mentioned support board is equipped with the guide slot and the round hole connected in the rear end of guide slot, the groove bottom of accommodation groove rear end is equipped with the locating post, and the one end of locating post is connected with the locating cap away from shoe -pad body, the side of above -mentioned support board rear end is equipped with the bayonet, and the groove bottom of accommodation groove rear end is equipped with the locking post of cooperation bayonet, and the lower end of this locking post is connected with the locking cap. The rectangular section design of the locating post of the application can limit the rotation of the support board around the locating post with the linear cooperation of the guide slot, further ensure the position accuracy of the support board in the accommodation groove, avoid the influence of the supporting effect due to the deviation of the support board, the user can complete the dismounting of the support board without the help of the tool, and precise positioning can be realized without repeated adjustment, the convenience and the precision are considered, and the operation is simple and convenient.

The invention relates to a multi-product engineering construction method, an engineering construction system and computer equipment, which are applied to a first construction end, and the method comprises the following steps: carrying out simulation construction on a target engineering; analyzing output information generated in the simulation construction process to obtain an incidence relation among input resources, construction actions and construction products when the target project is constructed; converting the incidence relation into a description file for constructing the target project; and transmitting the description file to a second construction end, so that the second construction end constructs the target project based on the description file. By adopting the method, the engineering construction reliability can be improved.

The utility model discloses a feeding cart capable of being assembled quickly, and particularly relates to the technical field of conveying carts, the feeding cart is connected to a feeding station of a feeding machine, the feeding cart comprises a frame body, and the frame body is provided with an assembling assembly matched with the feeding station and a material placing plate connected to the frame body; the assembling assembly comprises a conical positioning pin arranged at the front end of the frame body and a guide groove formed in the feeding machine and matched with the conical positioning pin. A material placing box is arranged on the material placing plate, and a material placing groove matched with the outer contour of a workpiece is formed in the material placing box. According to the utility model, the conical positioning pin is matched with the guide groove, so that the trolley and the feeding machine can be accurately guided, butted and positioned, the trolley and the feeding machine can be quickly assembled, the material placing box of the material placing groove fitting the outer contour of a workpiece is arranged on the material placing plate, and the contour of the workpiece is accurately matched, so that materials can be prevented from being collided and damaged, and the working efficiency is improved. And rapid alignment can be achieved without visual assistance, and the feeding efficiency is greatly improved through the design.

The invention relates to the technical field of nuclear power construction, in particular to a nuclear island pipeline simulation installation method and system based on a digital system, and the method comprises the steps: obtaining nuclear island region information and installation demand information, and determining nuclear island structure information, region environment parameters and pipeline distribution information according to the nuclear island region information; constructing a pipeline area model of the nuclear island pipeline based on the nuclear island structure information, the area environment parameters and the pipeline distribution information; and performing suitability analysis on the pipeline area model according to the installation demand information to obtain a target installation point location and an optimal installation scheme, thereby improving feasibility and reliability of nuclear island pipeline installation.

The utility model discloses a cold press capable of pressing special-shaped aluminum profiles, which relates to the field of cold press devices and comprises an operation table, a hydraulic mechanism is arranged above the operation table and comprises a top plate, a hydraulic lifting column and a pressing plate, and supporting structures are arranged on two sides of the operation table. The supporting structure comprises a supporting base, a supporting column and a groove, a first switch is installed at the position, close to the upper portion, in the groove, a second switch is installed at the position, close to the lower portion, in the groove, and reset grooves are formed in the positions, close to the front and rear portions, of the surfaces of the two sides of the pressing plate. The first switch, the second switch and the reset groove are arranged in the hydraulic cylinder, so that the oil pressure sealing load of the hydraulic cylinder can be reduced, the service life of the hydraulic cylinder is effectively prolonged, meanwhile, after pressing is completed, demolding operation is facilitated, and the production efficiency is improved.

The integrated embedded charging pile based on the Internet of Things comprises a shell, a second motor is fixedly connected into the shell, the output end of the second motor is fixedly connected with a threaded rod, the threaded rod is in transmission connection with a rotating disc, and the rotating disc is eccentrically and fixedly connected with a deflection column sliding on the inner side of an oval ring. One end of the elliptical ring is fixedly connected with a vertical rod, one end, far away from the elliptical ring, of the vertical rod is fixedly connected with a pushing plate, the pushing plate is slidably connected with a mounting box, a non-return plate is arranged above the mounting box, the mounting box is fixed on the inner side of the shell, and a pipeline of the mounting box is connected with a splitter plate. The spring clamping stagnation caused by oil sludge formed by mixing floating ash and spring lubricating grease is avoided, the long-term stable elastic performance of the spring is guaranteed, it is guaranteed that the cable can be accurately guided through the spring driving clamping plate all the time in the cable winding process, neat arrangement of the cable on the surface of the supporting shaft is achieved, and the winding disorder problem caused by spring clamping stagnation is avoided.

The utility model relates to the technical field of electrode machining, and discloses an adjustable chuck for electrode machining, which comprises a fixed column, a rotating valve is arranged on the front side of the outer wall of the fixed column, and the top of the inner wall of the rotating valve is rotatably connected with a bidirectional threaded rod. The front end of the bidirectional threaded rod penetrates through the inner wall of the fixing column and is fixedly connected with the rotating valve, first clamping jaws are rotationally connected to the front side and the rear side of the outer wall of the bidirectional threaded rod correspondingly, first sliding grooves are formed in the left side and the right side of the outer wall of the two first clamping jaws correspondingly, and rotating teeth are fixedly connected to the middle of the outer wall of the bidirectional threaded rod. And clamping jaws II are arranged at the upper ends and the lower ends of the outer walls of the rotating teeth. According to the utility model, through the matching of the rotating valve and the bidirectional threaded rod, the operation is simple and convenient, the relative or reverse movement of the clamping jaw I can be accurately controlled, and the clamping jaw I is more stable and more accurate to guide when moving through the matching of the sliding chute on the outer wall of the clamping jaw I and the sliding block.

The present application relates to a kind of cardiopulmonary resuscitation feedback device, equipment and storage medium.It includes: first determination module, for obtaining the electrocardiosignal of organism in preset time, and according to the electrocardiosignal determination the change rule of the electrocardiosignal;Second determination module is used to determine the cardiopulmonary state of the organism according to the change rule of the electrocardiosignal;The cardiopulmonary state includes the first state of the change rule meeting preset requirement and the second state of the change rule not meeting preset requirement;Feedback module is used to feedback the suggestion information of the chest compression to the organism in the cardiopulmonary state of the organism is second state.The cardiopulmonary resuscitation feedback device, equipment and storage medium provided by the present application enable ordinary user to obtain accurate, comprehensive guidance and feedback when carrying out cardiopulmonary resuscitation.

The invention discloses a method for preparing a dark plum extract based on a supercritical extraction method. The method comprises the steps of obtaining a first classification result of smoked plums based on the morphology of the smoked plums; the smoked plums are smashed into powder, the characterization value of the smoked plum powder is obtained through an electronic nose method, the characterization value is used for characterizing the relative strength of polar substances in the smoked plum powder, and a second classification result is obtained based on the relative strength; selecting the type and content of an entrainer based on the first classification result and the second classification result, and preparing the dark plum extract by utilizing a supercritical extraction method based on the selected type and content of the entrainer. The method can improve the extraction efficiency of the dark plum extract.

The invention discloses a familial defect identification method for an industrial control system of a hydropower station, which belongs to the technical field of automatic control of hydropower stations and comprises the following steps of: dividing each functional unit according to functions and coding; constructing a dual-identification feature vector set containing multiple feature vectors, and carrying out sorting and normalization processing; determining the weight of each feature vector by adopting a subjective and objective combination weighting method; based on the healthy function unit, calculating and obtaining an identification reference vector; calculating a first relative Euclidean distance d1, a second relative Euclidean distance d'ia and a familial defect difference degree d2; constructing an ROC working curve based on historical data and performing dynamic adjustment to obtain a dynamic distance adjustment threshold value y0; comprehensively judging the familial defect condition of each functional unit; and finally, according to the generality of the clustered family defects, defect root tracing is carried out. According to the invention, identification accuracy and timeliness of familial defects can be improved, early warning can be carried out on the industrial control system, and defect tracing can be carried out on the basis.

The utility model relates to a side mold two-stage demolding mechanism which comprises a mold body, the mold body comprises a fixed mold and a movable mold, and the movable mold is arranged at the upper end of the fixed mold; the demolding assembly comprises reference molds symmetrically arranged on the fixed mold, adjusting columns are arranged on the front face and the rear face of one side of each reference mold, demolding blocks are arranged on the adjusting columns in a sliding mode, inclined inserting blocks are used for forming inclined inserting grooves of workpieces, and a plurality of forming grooves are formed between the symmetrically-arranged reference molds; inclined guide concave surfaces used for placing inclined insertion blocks are arranged on the reference mold corresponding to the forming grooves, the ends, away from the forming grooves, of the inclined insertion blocks are connected with one side of the top of the demolding block, and the demolding block abuts against the reference mold on the adjusting column. The demolding structure of the mold is optimized, the better demolding effect can be achieved, the stability and reliability of demolding operation are guaranteed, and the mold is matched with forming of a workpiece with a chute.

The application provides a rail surface smoothness state evaluation method, and relates to the rail maintenance and repair detection technical field.The evaluation method at least comprises the following steps: collecting original data of rail surface fluctuation of a rail by using a corrugation measuring instrument, and dividing the original data into multiple wave bands;calculating rail surface moving peak-peak value average, rail surface moving root mean square value and rail surface smoothness moving peak-peak value maximum value of each wave band according to the original data;calculating the wavelength index of the corresponding wave band according to the rail surface moving peak-peak value average, the rail surface moving root mean square value and the rail surface smoothness moving peak-peak value maximum value;and calculating the rail surface smoothness index according to the wavelength index of each wave band.The rail surface smoothness state evaluation method provided by the application can more accurately and efficiently guide the scientific maintenance and repair of the rail.

The utility model provides a simple trenchless drill rod probing equipment, including power device, cleaning device, support device, adjustable mobile device, probing device, cleaning device, connecting plate, power device below the power device is equipped with the support plate, power device and the support plate are connected through nut, the four corners below the support plate are equipped with a plurality of cleaning device, the support device is equipped with the adjustable mobile device, the probing device is equipped with the adjustable mobile device, and the connecting plate is equipped with the adjustable mobile device. A detection device is arranged below the supporting plate and penetrates through the connecting plate, a support device is arranged on the side face of the connecting plate, the connecting plate is connected with the support device through a nut, an adjustable moving device is arranged below the support device, and a cleaning device is arranged on the side face of the support device. Stable power is provided through the power device, cleaning of equipment is guaranteed through the cleaning device, stability of the equipment is guaranteed through the support device, use flexibility is improved through the adjustable moving device, detection precision is improved through the detection device, and self-maintenance of the equipment is achieved through the cleaning device.

The present application discloses a driving training reminder method based on a wearable device and a wearable device, the method is applied to a wearable device provided to a user; the method comprises: obtaining a sight line image through an image acquisition module; obtaining current project information, the project information being related to the currently ongoing driving training project; identifying preset features in the sight line image according to the project information; obtaining corresponding operation reminder information based on the recognition result, and performing display of the operation reminder information. The present application can solve the dependence of trainees on coaching teaching during driving training, and the operation reminder made according to the current situation in the trainees' sight line is more timely and accurate than the guidance of traditional coaches, improving the accuracy of the operation reminder, and thus helping to improve the efficiency of trainees' driving training.

The invention discloses a method and a device for predicting a non-deposition condition of sand-carrying migration of a tubular column. The method comprises the following steps: within preset calculation physical time, performing numerical simulation on a flow field in a tubular column under a single independent variable working condition by utilizing a pre-established sand migration simulation model, and monitoring sand mass flow at an inlet and an outlet of the tubular column to obtain simulation and monitoring results; based on the mass flow of the sand at the inlet and outlet of the tubular column in the simulation and monitoring results, obtaining the sand mass at the inlet and outlet of the tubular column; determining the discharge rate of the sand grains according to the mass of the sand grains at the inlet and the outlet of the tubular column, and determining the minimum sand carrying flow under the single independent variable working condition by combining a preset flow rule; and fitting the minimum sand carrying flow and the single independent variable to obtain a fitting relationship, and predicting a sand migration non-deposition condition under a given independent variable condition by utilizing the fitting relationship. The migration condition of sand grains in a pipe column can be accurately simulated, so that the migration non-deposition condition of the sand grains can be more scientifically and accurately determined, and smooth discharge of the sand grains is ensured.

The invention provides a lithium battery electrolyte production device which comprises a mixing tank, an electric heating device is arranged in the side wall of the mixing tank, a top cover is detachably arranged at the top of the mixing tank, a stirring shaft capable of vertically ascending and descending is arranged on the top cover, and a plurality of stirring shafts distributed around the stirring shaft are further arranged on the top cover. A stirring blade assembly is arranged on the stirring shaft, a turbulent flow disc arranged on the outer side of the stirring blade assembly in a sleeving mode is arranged on the stirring shaft, and a through hole matched with the stirring blade assembly is formed in the turbulent flow disc. According to the production device of the lithium ion battery electrolyte, the basic requirement for stirring and mixing treatment of the lithium ion battery electrolyte can be met, full mixing treatment of various raw materials can be achieved in the mode that horizontal stirring and vertical turbulent flow stirring are combined, and then the use requirements of people are met more fully.

This utility model discloses a guzheng with easily replaceable strings, relating to the field of guzheng technology. The guzheng with easily replaceable strings includes a body with mounting holes at the bottom. An internal limiting component is provided within the body to restrict the position of the front end of the strings. The limiting component includes a connecting plate fixedly installed inside the body, with a threaded seat fixedly installed inside the connecting plate. During tuning, a spring continuously applies a spring force to a lower pressure block, pushing it downwards along the sliding direction of the guide post, ensuring that the rubber pad at the bottom of the lower pressure block tightly adheres to the strings. The toothed protrusions at the bottom of the rubber pad further increase the friction between the rubber pad and the strings. Even if the limiting post is rotated for tuning purposes, the spring force continues to act on the lower pressure block, ensuring that the pressure of the rubber pad on the strings remains stable, effectively avoiding the problem of loosening due to repeated adjustments in traditional structures.