27results about How to "Prevent overcompression" patented technology

The invention discloses a data transmission processing system for an industrial internet, and the system carries out the progressive sequence segmentation and local time sequence extraction of a time queue of a pushed data size through employing an AI-based data analysis and coding mode. And intelligently judging whether to start a data compression module to perform data compression on the push data according to the multi-gating time sequence propagation representation of the local time sequence mode characteristics of each push data volume. Therefore, when to perform data compression can be intelligently determined, the problem of resource waste or excessive compression possibly caused by a fixed compression strategy is avoided, the data compression quality is improved, the data transmission efficiency is improved, and meanwhile, the data quality and real-time performance are ensured.

The invention relates to the technical field of railway line flaw detection, in particular to railway line automatic comprehensive flaw detection equipment which comprises two steel rails and a flaw detection car and further comprises a C-shaped mounting plate, a buffer assembly, a waist detection mechanism and a bottom detection mechanism. A first fixing rod is transversely arranged in the C-shaped mounting plate, fixing sleeves are slidably connected to the two ends of the first fixing rod correspondingly, and balance assemblies are arranged at the ends, away from each other, of the two fixing sleeves correspondingly. The device has the advantages that different detection assemblies are arranged for different detection areas, so that steel rail detection of different parts is more efficient and accurate, it is ensured that different types of defects can be detected, the detection period is shortened, the balance assembly and the buffer assembly cooperate with each other to enable the head detection assembly to keep a dynamic balance state, and the detection efficiency is improved. The probe is effectively protected from vibration damage, and the adaptability of the probe to the change of the steel rail and the detection stability of the probe are improved.

The invention provides an underwater connector with controllable compression amount, which comprises a plug assembly and a socket assembly which can be plugged with each other, and is provided with a guide screw and a screw limiting groove structure, when the plug assembly and the socket assembly are plugged with each other, the guide screw is inserted into the corresponding screw limiting groove; the structure can play a guiding role and also can prevent mutual rotation between the plug assembly and the socket assembly. Besides, the depth of the screw limiting groove and the length of the guide screw are designed in advance, so that the compression amount of the rolling shaft sealing element can be controlled within a proper interval during actual insertion operation, and the situation that the rolling shaft sealing element is excessively compressed due to the fact that the insertion force is too large is avoided.

The present invention discloses a high-pressure water electrolysis hydrogen production device, including an electrolytic cell stack and a high-pressure clamping structure. The electrolytic cell stack includes a plurality of pole plates and membrane electrodes that are alternately stacked in sequence. Titanium felt and carbon paper are respectively arranged on both sides of the membrane electrode, and a carbon paper pressing groove is arranged on the pole plate near the carbon paper side. The high-pressure clamping structure clamps the electrolytic cell stack, and the carbon paper is pressed into the carbon paper pressing groove. During the clamping installation, excessive compression of the carbon paper is avoided, thereby improving the service life of the water electrolytic cell. The carbon paper pressing groove controls the compression amount of the carbon paper, so that the compression of the carbon paper is always within a limit. The moderate compression of the carbon paper improves the mass transfer capacity of hydrogen while ensuring that the high-pressure water electrolysis hydrogen production device does not leak, thereby improving the performance of the water electrolytic cell.

This invention discloses an infrared small target detection method based on a frequency-space collaborative gating attention network, belonging to the field of infrared small target detection. The method includes: inputting an initial feature map into a pre-trained frequency-space collaborative gating attention network model, the model including an encoder module, a wavelet prior module, and a decoder module; the shallow coding layer of the encoder module extracts low-level spatial features, and the deep coding layer combines frequency-space collaborative gating enhancement with frequency-domain prior information to obtain an encoder-enhanced feature map; the wavelet prior module obtains frequency-domain prior information based on the low-level spatial features and inputs it into the deep coding layer; the shallow decoding layer of the decoder module performs frequency-space collaborative gating enhancement, and the deep decoding layer extracts spatial detail features; the infrared small target detection result is obtained based on the output of the decoder module. This invention can improve the target detection rate and reduce the false alarm rate under conditions of complex backgrounds, strong noise, low signal-to-noise ratio, and insignificant target features, enhancing stability and robustness in practical engineering environments.

The invention relates to a contact structure of a longitudinal magnetic circuit breaker, which can solve the problem that the contact structure of the longitudinal magnetic circuit breaker in the related technology is difficult to give consideration to good arc extinguishing effect and mechanical strength, the contact structure of the longitudinal magnetic circuit breaker comprises a contact cup, a screw mechanism and a contact blade, the contact cup is provided with an accommodating cavity and a cup opening, the screw mechanism is embedded in the accommodating cavity, and the cup opening is provided with an opening. The spiral mechanism is provided with at least two spiral grooves, the spiral grooves are spirally arranged around the axial direction of the contact cup, at least part of the spiral mechanism protrudes out of the cup opening in the axial direction of the contact cup, the contact piece abuts against the spiral mechanism in the axial direction of the contact cup, and the contact piece is configured to be capable of compressing the spiral mechanism in the axial direction of the contact cup till the spiral mechanism abuts against the cup opening for limiting.

The present disclosure relates to a text recognition method, device, readable medium and electronic device, the method comprising: obtaining a heat map corresponding to each character in a text image to be recognized; performing a first downsampling process on the text image according to a plurality of the heat maps to obtain a feature image corresponding to the text image; and obtaining text content corresponding to the text image according to the feature image. That is, the present disclosure can perform a first downsampling process on the text image according to the heat map corresponding to each character in the text image to be recognized, so that excessive compression of the width or height of the text image can be avoided, so that the text content obtained according to the feature image obtained after the first downsampling process is more accurate, thereby improving the accuracy of text image recognition.

The invention relates to the technical field of ecological environment monitoring equipment, and discloses a plateau ecological environment monitoring device based on unmanned aerial vehicle shooting, the plateau ecological environment monitoring device comprises an unmanned aerial vehicle, a camera and a support, the support is fixedly installed below the unmanned aerial vehicle, a first connecting rod and a second connecting rod are arranged below the unmanned aerial vehicle, one end of the first connecting rod is connected with a first supporting plate, and the other end of the first connecting rod is connected with a second supporting plate; one end of the second connecting rod is connected with the mounting block; the first supporting plate and the second supporting plate are connected through a transverse plate, a first insertion rod is slidably connected into the transverse plate, and the transverse plate can slide in the vertical direction of the first supporting plate so as to adjust the installation height of the camera and meet the shooting and detection requirements of different terrains of the plateau. By integrating the spectrum analysis module, chemical and biological components in the air can be detected in real time, and the system can provide accurate and real-time analysis data to ensure the reliability of a monitoring result no matter whether atmospheric pollutants or particulate matters and microbial components in the air are detected.

The invention belongs to the field of multi-modal information retrieval, and discloses a deep semantic guided unsupervised multi-modal Hash retrieval method, which is characterized in that a teacher model adopts powerful modal interaction information provided by a VLP model, a similar matrix and a graph convolutional neural network are constructed, and the semantic gap between a real value space and a Hamming space is made up; rich semantic information in the teacher model is transmitted to the student model in a knowledge distillation mode, and the student model is optimized, so that efficient learning of the small model is promoted; the student model inherits the advantages of the teacher model and avoids hyper-parameter adjustment pressure of a large-scale model, so that the method is more suitable for a large-scale data scene in practical application. A Hamming distance optimization strategy is designed, it is ensured that the complex semantic relation in the real value space is reasonably quantified and expressed in the Hamming space, and excessive compression from the real value space to the Hamming space is avoided.

This utility model relates to the field of machining technology and discloses an environmentally friendly chip collection and processing device for valve stem machining. It includes a base, a central seat fixedly mounted on the upper end of the base, and a collection and compression mechanism mounted on the upper end of the base. By compressing the chips and detecting their volume, timely discharge is achieved to ensure efficient collection and discharge of the chips. This environmentally friendly chip collection and processing device for valve stem machining, through the inclusion of a collection and compression mechanism, and the alignment of the storage port and feed port on the rotating disc, can stably collect chips generated during valve stem machining. A support plate temporarily supports the chips in the storage port. A central motor drives the rotating disc to rotate, and the meshing of the central gear and transmission gear, in conjunction with the support wheel, causes the support plate to be continuously struck and vibrated, resulting in a more compact accumulation of waste chips above the support plate, ensuring the continuity of the collection process.

The invention discloses a control method and system for waterproof well lid production, and aims to solve the problems that in traditional production, the forming precision of a sealing surface microstructure is insufficient, the assembly gap of a waterproof rubber strip is out of tolerance, and the traditional production only controls the macroscopic size and ignores the sealing surface micro-texture defects (such as sink marks and air holes) caused by material flowing. And the rubber strip is assembled without pre-pressing adaptive control, so that a gap of 0.1-0.3 mm is easy to appear, and leakage is caused. According to the system, a'sealing surface microstructure-adhesive tape pre-pressing cooperative adaptive control module 'is innovatively designed, and gapless attachment of a sealing surface and an adhesive tape is achieved through microstructure forming dynamic compensation and adhesive tape pre-pressing amount accurate matching; and meanwhile, a multi-source micro-sensing acquisition module, an intelligent mould pressing execution module, a micro-gap detection module and a full-process data tracing module are combined to form a precise production control system. The size deviation of the microstructure of the sealing face is smaller than or equal to + / -0.02 mm, the assembly gap of the rubber strip is smaller than or equal to 0.03 mm, the waterproof qualification rate is increased, and the method is suitable for high-precision production of the waterproof well lid made of the polymer composite material.

The utility model discloses a printing and dyeing cloth post -treatment unit relates to printing and dyeing cloth processing technical field. This printing and dyeing cloth post -treatment unit, including color fixing box, extrusion subassembly and flatten mechanism, the one side fixed mounting of color fixing box has drying box, and the flatten mechanism sets up on drying box, and the flatten mechanism includes mobile subassembly and flatness subassembly, and mobile subassembly includes screw column, guide rod, moving plate and L type connecting plate, and the moving plate is provided with on screw column and guide rod, and the front side fixed mounting of moving plate has L type connecting plate, and the flatness subassembly includes lower heating roller, movable frame and upper heating roller, and the front side rotatory mounting of L type connecting plate has lower heating roller, and movable frame sliding installation is on L type connecting plate. Through the cooperation of mobile subassembly and flatness subassembly, lower heating roller and upper heating roller can provide even heat when cloth passes through drying box, ensure that the drying process of cloth is more even, can effectively remove the wrinkle and ripple on the surface of cloth, guarantee the flatness of cloth.

A sampler for environmental geology relates to the technical field of geological exploration equipment and comprises a support, a ground breaking drill, a drilling power source, a pile frame, an electric capstan, an electromagnetic chuck and an electromagnetic controller, the pile frame is provided with the drilling power source capable of vertically moving along the pile frame, and the drilling power source can drive the ground breaking drill to drill downwards. The soil breaking drill is a hollow pipe with a cutting edge, a sampling drill with threads is detachably arranged in a pipe body of the soil breaking drill, the sampling drill is a downward hollow sharp pipe with an opening, a sample container tightly attached to the inner wall of the sampling drill is arranged in the sampling drill, and the sampling drill is provided with a magnetic adsorption plate. A cable part of the electromagnetic chuck is wound on the electric capstan and is connected with the electromagnetic controller, and the electric capstan can drive the magnetic adsorption head to vertically move into the ground breaking drill to be in contact with the adsorption plate; according to the sampling device, excessive compression of the soil sample can be avoided, the accuracy of the sampling result is ensured, the sampling equipment can continuously and automatically drill and collect the soil sample, and the automation degree is high.

A valve core assembly and shower controller include a shaft with a cavity and a flow hole connecting the water inlet passage and the cavity. A buffer assembly is provided within the cavity, comprising a seal and an elastic element. The seal is movably and sealingly connected to the cavity wall. The water inlet passage is opened and closed by moving the shaft. Simultaneously, in the event of water hammer, water flows through the flow hole into the cavity, applying pressure to the seal. The elastic element absorbs the force exerted on the seal by the water hammer effect. This valve core assembly combines a water hammer prevention assembly and a switching valve assembly, avoiding the need for simultaneous installation of both on the water system. It prevents water hammer while simultaneously enabling water flow opening and closing, thus reducing the required installation space.

This utility model discloses a sponge with good resilience, comprising a sponge base layer, a rebound material layer, a sponge interlayer, a mesh layer, a sponge surface layer, and a protective layer. The sponge base layer, rebound material layer, sponge interlayer, sponge surface layer, and protective layer are bonded together in sequence from bottom to top, and a mesh layer is provided between the sponge interlayer and the sponge surface layer. The rebound material layer has a wavy structure, and the upper surface of the rebound material layer is adapted to the lower surface of the sponge interlayer. The wavy structure increases the contact area between the rebound material layer and adjacent sponge layers, which can better disperse and absorb external forces. The combination of crests and troughs allows the rebound material layer to better disperse and absorb pressure when subjected to external forces, avoiding excessive compression of the sponge, reducing sponge deformation and collapse, and ensuring its performance stability. When the external force acting on the sponge is removed, the sponge can quickly return to its original shape, significantly improving the sponge's resilience.

The present invention discloses a dry oil-free screw compressor and a control method thereof, wherein the dry oil-free screw compressor comprises at least two-stage screw compression assemblies and a condensate separation and distribution mechanism; the first screw compression assembly is a low-pressure screw compression assembly, the second screw compression assembly is a secondary-pressure screw compression assembly; the third screw compression assembly is a high-pressure screw compression assembly; the condensate separation and distribution mechanism is connected to the air outlet of the compressed air terminal cooler to separate the condensate in the compressed air; the condensate separation and distribution mechanism transports the separated condensate to the rotor chambers of the second and third screw compression assemblies, where it is cooled and sealed, and the excess condensate is discharged. The dry oil-free screw compressor and the control method thereof proposed by the present invention can reduce the exhaust temperature, reduce the leakage of compressed gas, and reduce the specific power.

The anti-seismic handrail seat comprises a vertical pipe, a handrail base, a shock absorber and buffering sleeves, the upper end of the vertical pipe is rotationally connected with the upper end of the shock absorber, the two sides of the lower end of the vertical pipe are rotationally connected with the handrail base, the buffering sleeves are arranged at the connecting positions of the two sides of the lower end of the vertical pipe and the handrail base, and each buffering sleeve comprises a first connecting sleeve, an elastic sleeve and a second connecting sleeve from outside to inside; wherein the first connecting sleeve is connected with a connecting part on the handrail base, the second connecting sleeve is connected with the two sides of the vertical pipe through connecting pieces, and a protective piece is arranged between the vertical pipe and the buffering sleeve. The buffer device can buffer and protect impact between the vertical pipe and the buffer sleeve, on one hand, vibration of the vertical pipe in the horizontal direction can be relieved, vibration borne by an operator is relieved, the use experience of the operator is improved, on the other hand, damage to the vertical pipe and the buffer sleeve can be reduced, and the service life of the vertical pipe is prolonged. Therefore, the service life of the armrest seat is prolonged.

The invention discloses a felt opposite seam press-fit device, and relates to the technical field of automobile manufacturing, the felt opposite seam press-fit device comprises a pillar, the top of the pillar is fixedly connected with a top plate, the bottom of the pillar is fixedly connected with a bottom frame, the two sides of the pillar are fixedly connected with extension plates, the upper surface of the bottom frame is fixedly connected with a supporting rod, and the top end of the supporting rod is inserted with two press-fit tables; and a gap is formed between the two pressing tables. The felt cloth is pushed to move downwards through downward movement of the press-fit pad, so that the felt cloth is attached to the automobile roof plate on the press-fit table, the felt cloth can adapt to the shape of the automobile roof plate to be integrally attached in cooperation with a soft rubber material of the press-fit pad, the attaching speed is higher, and the attaching efficiency is improved. And meanwhile, the soft rubber material of the press-fit pad can adapt to the automobile ceiling plate in any shape, so that the pressure borne by the felt cloth is more uniform, the press-fit table corresponds to the automobile ceiling plate in shape, the automobile ceiling plate can be supported, and excessive press-fit of the automobile ceiling plate is avoided.

The utility model discloses a novel rebounding device which comprises a shell, an ejector rod and a hook groove, the ejector rod is vertically installed on the shell and can conveniently move in the shell in the longitudinal direction, and a positioning block is installed on the side wall of the ejector rod. A hook groove is formed in the ejector rod, the hook groove extends outwards to be provided with a clamping hook, the clamping hook is installed at one end of the hook groove, the ejector rod is vertically installed in the shell and can smoothly and longitudinally move in the shell, and the stability and high efficiency of the rebounding device in the working process are guaranteed. The design of the hook groove and the clamping hook further enhances the reliability and accuracy of the ejector rod in the moving process, the spring is arranged at one end of the ejector rod and is allowed to longitudinally reciprocate relative to the ejector rod, so that the rebound device has better elasticity and restoring force, meanwhile, the arrangement of the buffer rod effectively limits the moving range of the spring, and the service life of the rebound device is prolonged. Therefore, the service life of the spring is prolonged, and the overall performance of the rebounding device is improved.

The utility model relates to the field of textile printing measuring equipment, and provides a textile deformation measuring instrument, which comprises a bottom plate, one end above the bottom plate is fixedly connected with a first base, the other end above the bottom plate is provided with a chute, the other end above the bottom plate is movably connected with a second base, and the second base is provided with a sliding groove. A sensor body is installed at the top end of the second base, pulleys are arranged at the bottom end of the second base, a distance adjusting assembly is arranged below the inner wall of the first base, and clamping assemblies are arranged above the inner walls of the first base and the second base. According to the technical scheme, the sample needing to be measured is clamped through the clamping assembly, and the problem that the comparability and accuracy of a test result are poor possibly due to the fact that the position of the sample deviates during measurement is solved.

The utility model relates to the technical field of hydraulic telescopic oil cylinders, in particular to an anti-impact telescopic oil cylinder for a crane. The buffering device comprises an oil cylinder, a piston rod, a lower limiting ring, a buffering spring a, an upper limiting ring, a sliding assembly and a buffering rod. The buffering spring a is vertically arranged in the buffering groove and located in the lower limiting ring, the upper limiting ring is slidably arranged in the sliding assembly, the buffering rod is arranged in the sliding assembly and slidably arranged in the buffering groove, the tail end of the buffering rod abuts against the buffering spring a, and the outer diameter of the buffering rod is larger than the inner diameter of the lower limiting ring. Through the arrangement of the lower limiting ring and the upper limiting ring, when the buffer spring a is stretched, the upper limiting ring limits the movement of the sliding assembly, and the buffer spring a is prevented from being excessively stretched; when the buffer spring a is compressed, the lower limiting ring limits movement of the buffer rod, and the buffer spring a is prevented from being excessively compressed. The buffer spring a is prevented from exceeding the elastic limit and losing efficacy, and the service life of the buffer spring a is prolonged.

The invention relates to the technical field of arc extinguish chambers, and discloses a self-locking opening range burn-in detection tool for a vacuum arc extinguish chamber and an assembling method.The self-locking opening range burn-in detection tool for the vacuum arc extinguish chamber comprises a connector, a cam, a supporting cylinder and a limiting screw, the movable conducting rod is prevented from rotating in the screwing-in process of the connector, the situation that the corrugated pipe is sprained or excessively compressed due to rotation of the movable conducting rod in the thread screwing process is avoided, and the service life of the corrugated pipe is prolonged. A sawtooth-shaped groove formed in the connector is clamped with a limiting step at the top of the cam to form a self-locking mechanism, when the connector is screwed in place, the sawtooth-shaped groove makes contact with the limiting step, at the moment, when the connector is screwed downwards, the limiting step of the cam blocks the connector, and therefore the connector cannot be screwed off continuously, the design guarantees the consistency of the opening distance, and the service life of the connector is prolonged. The excessive compression of the corrugated pipe caused by excessive screwing is avoided, and meanwhile, the accuracy of aging detection is also improved.

This utility model provides a vehicle-mounted drone take-off and landing platform, relating to the field of drone technology. It includes a roof rack, with bolt holes on the surface of each connecting pile. A shock-absorbing damper is installed on the upper side of each connecting pile, and a limit rod is provided on the outer side of the shock-absorbing damper. A foot support plate is welded to the top of the shock-absorbing damper, and an electrically controlled neodymium magnet strip assembly is provided in the middle of each foot support plate. As the drone lands on the foot support plate, the shock-absorbing damper can adaptively reduce the impact force during landing through its own rebound effect. Furthermore, during vehicle movement, it can alleviate vibrations to a certain extent when encountering bumpy environments, protecting the drone and equipment. The limit rod acts as an auxiliary support during the operation of the shock-absorbing damper. When the shock-absorbing damper exceeds the limiting range of the retaining ring on the outer side of the limit rod, the retaining ring will rigidly limit the movement with the bolt hole, thereby preventing excessive compression or stretching of the shock-absorbing damper.

An operating mechanism of a switch belongs to the technical field of low-voltage apparatuses. A switching-off valve rod, a switching-off lever and a switching-off half shaft are rotationally arranged in the operating mechanism, the switching-off half shaft is in hasp fit with the switching-off lever, the switching-off lever is in hasp fit with the switching-off valve rod, the switching-off lever comprises a male fitting piece, a female fitting piece and an elastic assembly arranged between the male fitting piece and the female fitting piece, and the elastic assembly is in hasp fit with the switching-off half shaft. The opening lever is characterized in that the opening lever further comprises a first installation part, and the first installation part is arranged on the male matching part or the female matching part, limits the relative rotation amount of the male matching part and the female matching part from the initial position to the final position, and is used for preventing the elastic assembly from being excessively compressed. The operating mechanism has the advantages of preventing the elastic component from being excessively compressed to ensure the unlocking characteristic of the operating mechanism.

The invention relates to the technical field of bio-organic fertilizer fermentation, in particular to a bio-organic fertilizer fermentation process capable of making full contact with oxygen-enriched air. A fermentation tank is included, an oxygen pipe is fixedly connected to the fermentation tank in a penetrating mode, an adjusting mechanism is rotatably connected to a moving seat, and a raw material pressing mechanism is rotatably connected to the moving seat; a plurality of raw material turning frames are arranged on the periphery of the fermentation tank, when straw raw materials are added into the fermentation tank, the raw materials in the fermentation tank are fully compacted by using a raw material pressing mechanism through a turnover compacting plate, gaps among straws are effectively reduced, the stacking density of the raw materials is improved, and the space utilization rate of the fermentation tank is optimized; low fermentation efficiency caused by too large gaps is avoided, the stacking state of straw raw materials in the fermentation tank is effectively improved, the stacking density of the raw materials can be improved, air circulation can be improved, uniform distribution of microorganisms and sufficient oxygen supply are ensured, and thus the smooth proceeding of the fermentation process is promoted.

The invention relates to the technical field of foundation engineering, in particular to a slope supporting formwork supporting frame and a construction method thereof. The supporting frame comprises a supporting column and at least two supporting structures arranged in the height direction of the supporting column. The supporting structure comprises a threaded rod, a mounting base arranged at one end of the threaded rod and a triangular supporting frame fixed to the side, away from the threaded rod, of the mounting base. The mounting base is rotationally connected with the threaded rod, and at least two pressing plates are fixed to the side, close to the slope supporting formwork body, of the triangular supporting frame and distributed at equal intervals in the length direction of the triangular supporting frame; the sides, close to the triangular supporting frames, of the supporting columns are perpendicularly and fixedly connected with guiding bases corresponding to the triangular supporting frames, the guiding bases are located below the corresponding triangular supporting frames, and sliding grooves are formed in the tops of the guiding bases. A sliding block in sliding connection with the sliding groove is arranged at the bottom of the mounting base. Through the fixing mode of the triangular supporting frame and the pressing plate and the sliding connection of the sliding block and the sliding groove, stable supporting and convenient adjustment of the supporting frame are achieved.