36results about How to "Achieve compression" patented technology

The utility model discloses a motor shaft rust cleaning equipment for motor, it includes the U type mounting seat, the top of one side of U type mounting seat is installed motor, the output of motor is equipped with the rotating rod no. 2 that extends to the inside of U type mounting seat. Through rotating rod no. 2 and motor can realize the rotation of motor shaft, and cooperate bevel gear no. 2, bevel gear no. 1, rotating rod no. 1, rotating rod no. 1, the structure design of tooth block and connecting rod, still can drive sliding block, internal thread sleeve, threaded rod and arc rust cleaning plate move in the inside of sliding slot, to realize the compression of spring, and through the movement of arc rust cleaning plate and then cooperate the rotation of motor shaft, can realize the polishing rust cleaning work at different positions of motor shaft outside, and through the structure design of this part, need not operator hand -held polisher, effectively reduced the labor intensity of later period worker, increased the convenience and practicality of this equipment later period use.

This utility model relates to the technical field of elevator car top guardrail equipment, and discloses a retractable guardrail for elevator car tops, including an elevator car top with a rectangular structure. First supports are fixedly connected to the four right angles of the elevator car top. First limiting cylinders are fixedly connected to the upper sides of multiple first supports. Threaded sleeves are fixedly connected to the bottom inner sides of multiple first limiting cylinders. Each threaded sleeve is threaded with a threaded rod, and a first support tube is rotatably connected to each threaded rod. This utility model allows the threaded rods to rotate by rotating a handwheel, causing the first support tubes to rise or fall from the first limiting cylinders. When the elevator is paused for maintenance, each first support can be raised; when the elevator is running normally, each first support can be retracted into the first limiting cylinder, thereby reducing the space occupied by the guardrail in the elevator shaft.

The invention belongs to the technical field of cast-in-place pile hole collapse prevention, and particularly relates to a silt layer self-balancing hole collapse prevention cast-in-place pile structure which comprises a reinforcement cage and a pile casing, the pile casing is detachably installed at an opening of a cast-in-place pile hole, and the reinforcement cage penetrates through an inner cavity of the pile casing and makes contact with the bottom of the inner cavity of the cast-in-place pile hole. The fixing part is detachably mounted at the top of the reinforcement cage, and the top of the reinforcement cage mounted closest to an opening of a cast-in-place pile hole can be continuously pressed through the fixing part; the adjusting part is arranged outside the fixing part, and the position of the reinforcement cage can be adjusted in time through the adjusting part, so that the central axis of the reinforcement cage coincides with the central axis of the cast-in-place pile hole all the time. According to the concrete foundation pile, through mutual cooperation of the parts, stirrup deformation and main reinforcement bending of the reinforcement cage caused by collapse of a silt layer during concrete pouring can be avoided, the bearing capacity of the built concrete foundation pile is guaranteed, and meanwhile the influence on lifting of the guide pipe and normal construction of a cast-in-place pile hole is avoided.

The application belongs to the technical field of artificial intelligence, and discloses a question and answer identification method and device, electronic equipment and readable storage medium, the method comprises the following steps: receiving a question and answer request for a target question; based on the question and answer request for the target question, a pre-trained question and answer model is used to determine the answer corresponding to the target question; wherein the question and answer model is a student model obtained based on a second sample data set and a teacher model, and the teacher model is constructed based on a first sample data set and a transformer-based bidirectional encoding representation model. In this way, when question and answer identification is performed, the response speed of question answering can be improved and resource consumption can be reduced.

The application discloses a lithium battery diaphragm extraction drying device and a use method, relates to the technical field of lithium battery diaphragm production, and comprises a machine shell, a rotating roller group for conveying diaphragms is arranged in the machine shell, a bubble removing assembly is arranged on the conveying path of the battery diaphragm, the bubble removing assembly comprises a vibrating cylinder, a vibrating piece is slidably arranged on the inner wall of the vibrating cylinder, a pressing piece for pressing the diaphragm is arranged on one side of the vibrating cylinder, and a driving assembly for driving the vibrating piece and the pressing piece to move synchronously is arranged at one end of the vibrating cylinder; the bubble removing assembly of the application is close to the diaphragm through the vibrating cylinder, the separation of the bubble and the diaphragm is assisted by vibration, and the bubble removing efficiency is effectively improved; the vibrating piece is slidably arranged, the vibrating position can be flexibly adjusted, direct vibration operation can be conveniently performed on the bubble position, and then the bubble can be conveniently dispersed and separated.

The application provides an electric recovery door leaf mechanism and belongs to the technical field of rail transit. The application is characterized in that a sliding plate including two main channels and a transition channel connecting upper ends and lower ends of the two main channels is arranged on a door frame side wall, an end of a gas spring hinged to a door leaf is hinged to a sliding component sliding in the sliding channel, each main channel corresponds to an electric linear module, the transition channel at the lower end of the main channel corresponds to an electric push rod, the electric linear module and the electric push rod are selectively connected with the sliding component, the sliding component can be driven to move downward by an electric linear module to realize the recovery of the door leaf under the condition that the gas spring does not retract, the sliding component can be transferred to another main channel by the electric push rod and be pushed upward by another electric linear module to compress the gas spring, the normal use of the gas spring is ensured, the use requirement of subsequent opening and supporting of the door leaf is met, the whole process does not need manual participation, the recovery saves time and effort, and no inhaul cable is arranged, so the evacuation safety is higher.

The utility model relates to the technical field of positioning jigs, and discloses a rotary positioning jig for buckle foam attachment, which comprises a processing table, the top of the processing table is fixedly connected with a fixing plate, the left side of the fixing plate is fixedly connected with a first motor, and the other end of an output shaft of the first motor is fixedly sleeved with a first threaded rod. Through the arrangement of a sliding block, a hollow rod, a rotating rod, a round rod and a pressing plate, when a first motor starts to operate, a first threaded rod rotates, so that the sliding block drives the hollow rod to horizontally move rightwards under the limiting effect of a machining table, and then the hollow rod extrudes and pushes the rotating rod; the rotating rod drives the round rod to rotate under the limiting effect of the machining table, finally, the pressing plate starts to rotate, when the pressing plate is attached to the foam, the foam is pressed, and the situation that the sealing effect is poor due to the fact that a gap exists between the foam and a workpiece is avoided.

The rotary compression device of the packaging machine comprises a bottom plate, an overturning plate, a base, a motor, a first connecting rod, a second connecting rod, a third connecting rod and a compression mechanism, the base is fixedly arranged on the bottom plate, one end of the overturning plate is hinged to the base, the first connecting rod is fixedly arranged at the bottom of the overturning plate, and one end of the second connecting rod is rotationally connected with the first connecting rod. The end, away from the second connecting rod, of the third connecting rod is fixedly connected with the motor, and the compression mechanism is installed on the surface of the overturning plate. After the disposable hygienic products between the two compression plates are compressed, the motor drives the third connecting rod to rotate upwards, the overturning plate deflects around the base under the cooperation of the first connecting rod and the second connecting rod, and the compressed disposable hygienic products are rotated to a packaging station so that the disposable hygienic products can be in butt joint with a subsequent packaging mechanism conveniently; the compression and rotation integrated processing of the product is achieved, the automation degree is high, and the device is suitable for large-scale application and popularization.

The invention discloses a highway subgrade bearing capacity detection device, and relates to the technical field of subgrade bearing capacity detection, the highway subgrade bearing capacity detection device comprises a pavement layer, a test pit and a detection mechanism, the detection mechanism is provided with an auxiliary mechanism, the auxiliary mechanism comprises an oil storage shell and two mounting holes, and the oil storage shell is internally provided with two perforated plates and a sealing gasket. A shell cover is additionally arranged at an inlet of the oil storage shell, a sealing sleeve is movably connected between the interiors of two mounting holes in a sleeving mode, an L-shaped plate is fixed in the sealing sleeve, the remaining two ports of a three-way pipe communicate with electric valves, and an L-shaped rod is fixed to one end of the L-shaped plate. The bearing capacity detection device can solve the problem that large equipment needs to be used when the balance weight and the cross beam are carried and moved, thereby ensuring that the detection device can be normally erected and used in a new material roadbed section with a limited working space, and further improving the use efficiency of the bearing capacity detection device.

The invention belongs to the technical field of thermotechnical fluid tests, and discloses a thermotechnical fluid test system precious gas pressure stabilizing and recycling device and method.The device comprises a plurality of air bag type pressure tanks, each air bag type pressure tank is provided with an inlet adjusting valve, an outlet adjusting valve and a gas adjusting valve, and the gas adjusting valves are connected with a precious gas supplementing loop; the valuable gas supply loop is connected with the helium test loop, the helium test loop is connected with the vacuum pump set, the inlet regulating valve is connected with the water pump, the water pump is connected with the plant water inlet, and the outlet regulating valve is connected with the plant water outlet. Water is injected into part of the air bag type pressure tanks in sequence, gas is compressed into the remaining air bag type pressure tanks, the gas is stored in the different air bag type pressure tanks, and the helium test loop is filled with the recycled gas. The device is easy and convenient to operate, and pressure adjustment and gas recovery can be achieved by controlling the water level.

This invention relates to the field of multimedia video processing and playback control technology, specifically a video segment-level content management and control method and system, comprising: a time-series discrete mapping step: obtaining a server-side rule set and mapping it to a time-series state index structure with video durations divided into discrete-time graticles; an asynchronous look-ahead detection step: calculating the look-ahead time based on the current playback time using an independent asynchronous thread and reading the corresponding graticle data from the bitmap; an instruction generation and caching step: generating instruction objects based on graticle control identifiers using preprocessing logic and pushing them sequentially into an instruction circular queue; and a frame-level synchronous application step: checking the queue during main playback thread rendering, and applying the instruction if the current time matches the instruction trigger time. This invention reduces playback CPU usage, eliminates micro-stuttering caused by main thread blocking, and ensures accurate triggering of control logic at the frame level.

The application relates to the field of bone joint reduction, and particularly discloses an orthosis for bone joint reduction and fixation, which solves the problems of single function of existing bone joint fixation orthosis, especially the fixation orthosis for knee joints, and the problems of being not conducive to the rehabilitation of the joints of patients and the post-exercise recovery, and the orthosis comprises a base, a limiting box, an opening, a sliding frame, a clamping seat, a fixing clamping plate, an adjusting assembly, a rotating shaft, an upper guard plate, a side plate, a sliding frame, a pressing seat, a rotating plate I, a sliding seat, a cam, and a driving assembly, the outer side of the limiting box is slidably connected with a pulley, a linkage assembly is arranged in the limiting box, and the linkage assembly is used for driving the pulley to slide on the outer side of the limiting box. The device can stably position and fix the knee joints of patients and perform orthosis, does not cause relatively tight clamping to the legs of the patients, is conducive to blood circulation of the legs of the patients, can also assist in pressing and massaging, is conducive to stimulating the muscles of the patients to keep active, and reduces the subsequent rehabilitation and exercise period.

The invention relates to the technical field of wastewater treatment, in particular to a calcium ammonium nitrate wastewater treatment device and method.The device comprises a PH adjusting tank, a buffer tank, a heat exchanger, a multi-medium filter, a precision filter, a ceramic filter, an ultrafiltration device, a concentration reverse osmosis device, a desalination reverse osmosis device, a concentrated water reverse osmosis device and wastewater discharge system equipment; the multi-medium filter comprises a filter tank body, a fiber ball filter material layer is arranged in the filter tank body, and a liftable compression frame and bearing frame structure is arranged; the compression frame moves along the vertical guide pipe through a magnetic force driving mechanism, compresses the fiber balls to form a gradient pore structure during filtration, and moves upwards to release the fiber balls and trigger the dispersion frame to unfold during backwashing so as to assist in loose cleaning of the fiber balls; the compression frame is sleeved on a vertical guide pipe in the filter tank body in a lifting manner, and the bearing frame is movably hoisted at the bottom of the guide pipe; the device disclosed by the invention can efficiently realize graded purification and resource recovery.

This invention discloses a tool and method for holding a heavy-duty telescopic rod for shortening a protective cover, solving the problem in the prior art where the telescopic rod still retains supporting elasticity during disassembly. It effectively maintains the length of the telescopic rod, improving the efficiency of telescopic maintenance. The specific solution is as follows: A tool for holding a heavy-duty telescopic rod for shortening a protective cover includes a main base plate and a clamping component. The main base plate and clamping component clamp the upper connecting column of the telescopic rod. The upper connecting column is connected to an upper mounting block connected to the protective cover. The main base plate movably supports a torsion gear assembly. The torsion gear assembly can rotate relative to the main base plate under external force. The torsion gear assembly meshes with a screw-hole gear assembly through a transition gear assembly. The screw-hole gear assembly includes a screw-hole gear and a connecting rod. The screw-hole gear is threaded onto the connecting rod. One end of the connecting rod is connected to a fixing component. The fixing component is connected to the lower connecting column and lower mounting block of the telescopic rod.

This invention discloses a boiler heating system with a return water heating function, relating to the field of boiler technology. The boiler heating system includes a boiler body, a steam chamber at the top of the boiler body, a circulating heating pipeline on one side of the steam chamber, a filter assembly, an expansion tank, and a thermostatic assembly on the circulating heating pipeline. The expansion tank includes a tank body and an expansion bag. The fixed end of the expansion bag is located on one side of the tank body, and the movable end of the expansion bag is provided with a stretching assembly. The fixed part of the stretching assembly is located on the other side of the tank body. A heat insulation plate is provided at the bottom of the tank body. This invention uses the contraction of the stretching assembly to stretch and deform the expansion bag, increasing the heat exchange area between the expansion bag and the hot steam in the tank body. The high-frequency reciprocating movement of the stretching assembly's extension and retraction end disturbs the water in the expansion bag, accelerating the heat exchange between the hot steam and the return water in the expansion bag, reducing the heat exchange time of the low-temperature return water in the steam chamber, and improving the efficiency of circulating heating.

This invention provides a rope-driven, tensioned, continuous robotic arm, belonging to the field of robotics technology. The robotic arm consists of several joint groups connected in series. Each joint group comprises several joints connected in series. Each joint includes a lower joint end, an upper joint end, a chuck, a push rod, a compression unit, a tension unit, and a ball joint. A tension unit and a compression unit are located between the lower and upper joint ends. A spring sleeve is fitted around the compression unit, and a chuck is mounted on the upper part of the spring sleeve. The chuck is connected to the ball joint via a push rod and a double-ended bolt. A ball joint sleeve is provided around the ball joint, which passes through a central through-hole at the upper end of the joint. Each joint group is equipped with a set of drive ropes. This invention, by constructing a three-level structure of joint-joint group-robotic arm, can achieve complex bending, compression, and coupled movements, mimicking various biomimetic movements of an elephant's trunk. It also possesses advantages such as good deformability and high structural rigidity, enabling independent movement of a single joint group and collaborative operation of multiple joint groups.

Embodiments of the present application provide a kind of detection data of industrial equipment, data processing method and device, computing device, the data processing method includes: reading multiple detection data from data storage system;Identify the valid data in the multiple detection data, obtain multiple valid data;According to the preset format conversion mode, the multiple valid data are respectively converted into corresponding data record, and multiple data records are obtained;Based on preset data compression algorithm, the multiple data records are compressed and handled, and the target data packet compressed is obtained.The data compression rate of the present application embodiment is improved.

This invention discloses a convolutional neural network pruning method and apparatus based on feature similarity and feature compensation. The method includes: adjusting the size of the input images in the dataset to a fixed size, standardizing the pixel values ​​of the images, and increasing the training data using image enhancement techniques; initializing the network structure and setting model parameters, and training the model using the training data; for the trained model, obtaining the similarity between convolutional kernels, performing cluster analysis based on the similarity, grouping each layer of convolutional kernels into similar groups, selecting the convolutional kernels to be retained in each similar group, and generating a new network structure; copying the parameters of the retained convolutional kernels into the new network structure, and compensating the weight parameters of the pruned convolutional kernels in each similar group into the retained convolutional kernels through parameter superposition; performing model accuracy recovery training using the original dataset, and saving the model parameters and network structure. This pruning method can maintain model accuracy.

The utility model discloses a barrel-shaped waste collecting and compressing device, which is characterized by comprising a bottom plate fixedly connected with a group of vertical rods; the workbench is fixedly connected with the lower portions of the vertical rods, the workbench is fixedly connected with a lower square block, and the lower square block is fixedly connected with a lower shaft; the top plate is fixedly connected with the tops of the vertical rods; the hydraulic rod is fixedly connected with the top plate; the pressing plate is fixedly connected with a piston rod of the hydraulic rod, the pressing plate is fixedly connected with an upper square block, and the upper square block is fixedly connected with an upper shaft; and the four rhombic rods are rotationally connected with the supporting rods correspondingly, and the two rhombic rods on the upper side are rotationally connected with the upper shaft correspondingly. The utility model relates to the technical field of compression equipment, in particular to barrel-shaped waste collecting and compressing equipment. The technical problem to be solved by the utility model is to provide the barrel-shaped waste collecting and compressing equipment which is convenient to realize compression after the bottom of a barrel is cut and is convenient to realize subsequent transfer and collection.

The utility model relates to the technical field of bottle cap dust removal, which comprises a case, a workbench, a turntable mechanism, a material taking mechanism and a conveyor belt mechanism, the material taking mechanism is arranged above the turntable mechanism, and the conveyor belt mechanism is arranged below the rear end of the material taking mechanism; the turntable mechanism drives the bottle caps on the turntable mechanism to rotate, so that the bottle caps are pressed and dedusted; the material taking mechanism sucks the bottle caps on the rotating disc, knocks the bottle caps to remove dust, and conveys the bottle caps subjected to dust removal to the conveying belt mechanism to be discharged. Feeding is carried out through the three feeding stations, when bottle caps are rotated to the first dust removal station through the rotating disc, first dust removal is carried out, when the bottle caps are rotated to the second dust removal station through the rotating disc, second dust removal is carried out, then the bottle caps are adsorbed to the position below the cap knocking assembly through the material taking mechanism, cap knocking and third dust removal are carried out, and the dust removal effect of the bottle caps is guaranteed; the multiple bottle cap containing tools are placed on the rotating disc, it is guaranteed that the dust remover can replace different tools according to bottle caps of different sizes, and flexible adaptation of cap knocking and dust removing is achieved.

The utility model relates to the technical field of key panels, in particular to a key panel structure, which comprises a switch main body assembly, a panel assembly is connected above the switch main body assembly, the panel assembly and the switch main body assembly are clamped and fixed through a buckle assembly, the panel assembly comprises a key support, a key surface cover and a light guide part, and the light guide part is arranged on the key support. The key support and the key surface cover are mutually bonded and fixed through colloid, and a fool-proof assembly is arranged between the key support and the key surface cover. According to the utility model, fool-proof positioning is carried out on the key bracket and the key surface cover through the fool-proof assembly, and then the key bracket and the key surface cover are bonded in the glue groove in a gluing manner, so that the materials of the key surface cover can be customized, such as copper, aluminum, stainless steel and the like; according to the utility model, the button support and the fixed support are loosely matched through the four buckling grooves and the buckles, and then the seesaw elastic sheet and the compaction block are matched to realize the functions of pressing and rebounding.

According to the multi-sensor fusion spacecraft target detection method based on response distillation, infrared and visible light cameras are fused to realize cross-distance scale target continuous tracking, model parameters are compressed through response knowledge distillation of a teacher-student model, the calculation efficiency is improved, and cross-distance scale tracking of non-cooperative targets by on-orbit service is improved. The method comprises four main modules: 1) external parameter estimation based on heating calibration plate angular points; 2) labeling manual target tracking data; 3) teacher network training based on a neural network tracking model; and 4) student network data distillation based on model response. According to the method, data is acquired by utilizing distance scale perception advantages of different sensors, cross-modal data fusion is realized by virtue of external parameter calibration, a supervised data set is constructed by virtue of manual annotation, parameters are simplified by virtue of model distillation, and space-based satellite computing environment deployment is adapted. And finally, labeling data based on a plurality of data sequences, and quantitatively evaluating and testing the overall workflow.

The invention discloses an eccentric peristaltic positive displacement liquid pump and air pump molded line and a micro pump. The molded line is formed by fixing an outer rotor and eccentrically rotating and meshing an inner rotor along the outer rotor; the molded line comprises a first worm claw part molded line of the outer rotor and a second worm claw part molded line of the inner rotor; the molded line of a first worm claw part of the outer rotor consists of an arc section AB, an arc section BC, a straight line section CD, an arc section DE and an arc section EF; and the molded line of the second worm claw part of the inner rotor consists of an arc section A 'B', an arc section B 'C', a straight line section C 'D', an arc section D 'E' and an arc section E 'F'. The molded lines of the inner rotor and the outer rotor can be precisely meshed in the whole running process, stable running of the pump is ensured, the inner rotor and the outer rotor rotate around the centers of the inner rotor and the outer rotor, a closed cavity is formed through combination of the molded lines, and gas compression is achieved; meanwhile, the molded line overcomes the defects that a traditional circular rotor air cylinder molded line is simple, the area utilization rate is low, and flow fluctuation is too large, and overcomes the defect that an asymmetric structure needs dynamic balance.

This invention belongs to the field of neural network technology, specifically relating to an iterative random pruning method and system based on meta-transfer learning. The pruning method of this invention includes the following steps: S1, a transfer learning step, pre-training the convolutional neural network using a large-scale dataset to initialize the network parameters; S2, a meta-learning step, meta-training the network using a small sample dataset; S3, a pruning step, pruning the network weights after meta-training; S4, a testing step, testing the network using a small sample dataset; and S5, a fine-tuning stage, retraining the network to restore its accuracy. Compared to existing technologies, this invention can reduce the number of parameters in a convolutional neural network with small sample datasets while maintaining the accuracy of the network model, achieving the goal of model compression.

The utility model provides an automatic tire retreading device, and relates to the field of tire conveying equipment. The device comprises a rack, a supporting and conveying device, a driving device and a tire pressing device, the supporting and conveying device comprises a supporting frame, a first conveying roller assembly and a second conveying roller assembly, and a channel used for containing tires is formed between the first conveying roller assembly and the second conveying roller assembly. The driving device is connected with the shaft assembly and used for driving the shaft assembly to drive the supporting frame to turn over, and therefore manual tire turning over can be replaced. Meanwhile, in the tire pressing device, a telescopic driving device drives a pressing connection piece to move in the height direction of the channel so as to press or release the tire, and the pressing effect on the tire in the overturning process and the effect of releasing the tire after overturning are achieved. In conclusion, according to the technical scheme, the automatic tire overturning function can be achieved, it can be guaranteed that the angle and the position of the overturned tire cannot be changed, and the accuracy of the position of the printed mark is guaranteed.

The utility model discloses a curtain shearing and clamping tool and a honeycomb curtain, and belongs to the technical field of curtains or shielding devices, the curtain shearing and clamping tool comprises a first side face, a second side face, a bottom face, a first springback face, a second springback face and a first gap, the side faces, the bottom face and the springback faces define a containing cavity used for containing folded curtain cloth, and through ports are formed in the two ends of the containing cavity; the first gap is arranged between the first rebounding face and the second rebounding face so that the curtain cloth can be pulled out of the first gap. According to the curtain shearing and clamping tool, the first side face, the second side face, the first springback face, the second springback face, the bottom face, the first gap and the second gap define a containing cavity for containing folded curtain cloth, a clamping frame capable of being bent and springback is formed, a honeycomb curtain can be clamped and stored, the curtain cloth is pulled from the containing cavity during stretching, and the curtain cloth can be sheared and clamped. When the honeycomb curtain is stored, the curtain is compressed to be integrally compressed into the containing cavity, the honeycomb curtain can be easily stretched and compressed through the first gap, and the honeycomb curtain is convenient to use or store.

The invention provides a double-acting curve plunger pump supported by balls, the plunger pump comprises a pump shell assembly and a pump core assembly, the pump core assembly is coaxially arranged in the pump shell assembly along the axis, the pump core assembly comprises a rotor structure and a stator structure, the pump shell assembly is matched with the pump core assembly to achieve flow distribution on the inner side and the outer side of the plunger pump. According to the axial plunger pump, the so-called ceiling effect formed by increasing the rotating speed of a traditional axial plunger pump can be broken through, and the power density is increased.

This utility model discloses a corrosion-resistant double-spring safety valve, relating to the field of spring safety valve technology. It includes a valve body with valve covers fixedly connected to both ends of the valve body's top. Two fixed rods are symmetrically fixedly connected to the top of each valve cover, with a top plate fixedly connected to the top of each rod. A valve stem is slidably connected to the middle of the valve cover, and a support block is fixedly connected to the top of the valve stem. This utility model allows adjustment of the rotation of the threaded rod to engage with a first pressing plate, causing the plate to move downwards in a predetermined direction, thereby applying longitudinal compressive force to the lifting plate. The screw structure of the threaded rod causes the first pressing plate to move vertically, generating a compressive force, thus achieving compression and pressing of the lifting plate. The core function is to adjust the distance between the support block and the lifting plate. By adjusting the relative position of the threaded rod and the first pressing plate, the distance between the lifting plate and the support block is precisely controlled, thereby adjusting the compressive force on the limiting spring and affecting the range of motion and pressure of the valve stem.

This invention relates to the field of fault diagnosis technology for high-voltage, high-capacity DC-DC converters, and provides an online diagnostic method and system for open-circuit faults in IGBTs of CETDC submodules. The method includes: constructing a fusion representation of multi-channel capacitor voltages; establishing a VMD adaptive decomposition optimized by the INFO algorithm; constructing a composite fitness function and constraining the optimization process; establishing a sensitive mode screening based on envelope entropy statistical characteristics; constructing multi-domain feature vectors of sensitive modes and establishing a fault identification model; and establishing interpretability analysis and key feature compression. This invention maintains high-precision diagnosis under complex operating conditions and noise disturbances, and improves the real-time performance, stability, and engineering usability of online deployment through a closed-loop process of "parameter adaptive decomposition - sensitive mode screening - key feature compression - attention time-series identification - interpretability verification".