9results about How to "Prevent overcompression" patented technology

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.

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 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 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.

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.