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fastening device
Owner:NINGBO SHILAM AUTO PARTS CO LTD
An open-close multi-working condition power distribution box shell for smart grid
PendingCN122292121AMulti-core performance collaborative optimizationPerfectly adapted to operational needsExtreme weatherSmart grid
This invention provides a hinged, multi-condition distribution box enclosure for smart grids, relating to the field of distribution box technology. It includes a distribution box cabinet with a fixed corrugated back panel on the back for enhanced wind pressure resistance. This provides stable anti-deformation support for the back of the cabinet during typhoon conditions, adapting to the extreme weather protection needs of islands. Both sides of the cabinet are equipped with side panel flipping mechanisms. This invention features flip-up side panels that can rotate 180° around a sliding pivot. Combined with the fixed corrugated back panel on the back of the cabinet, under extreme typhoon conditions, the corrugated flip panel can face outwards, forming a three-sided corrugated wind pressure-resistant structure to withstand typhoon impacts. Under normal conditions, the electromagnetic shielding layer can face outwards, avoiding the accumulation of salt crystals and hindering heat dissipation in the corrugated structure. This completely solves the industry pain point that fixed enclosures in island scenarios cannot simultaneously achieve wind pressure resistance, heat dissipation, and salt spray corrosion resistance.
Owner:ZHEJIANG MAIFENG POWER EQUIP CO LTD
Shaft seal sealing structure without shaft seal check ring and automobile air conditioner compressor thereof
ActiveCN224214321Ulow costreduce manufacturing costPositive displacement pump componentsMulti-stage pumpsStructural engineeringCylinder block
The shaft seal sealing structure without the shaft seal check ring comprises a front cover, a shaft seal, a main shaft, a cylinder body and a rear cover, the main shaft penetrates through the front cover, the shaft seal, the cylinder body and the rear cover, the front cover and the rear cover are installed on the front portion and the rear portion of the cylinder body respectively, and the rear end of the main shaft is connected with the rear cover. The front end of the main shaft is fixed in a shaft diameter end hole of the front cover; three hole sections with different inner diameters exist in a shaft diameter end hole of the front cover, a third hole section, a second hole section and a first hole section are arranged from the opening portion of the shaft diameter end hole to the inner side, the inner diameter of the first hole section is equal to the inner diameter of the second hole section, the inner diameter of the third hole section is equal to the inner diameter of the first hole section, and the shaft seal is assembled in the first hole section. The utility model solves the problem of how to reduce the cost of the two-way compressor in the prior art.
Owner:SHANGHAI GUANGYU AUTOMOBILE AIR CONDITIONING COMPRESSOR
Split gate field effect transistor with esd discharge path
ActiveCN224611133UPlay an ESD roleWill not increase area
This invention discloses a split-gate field-effect transistor with an ESD discharge path, comprising a low-resistivity N+ substrate, with a drain metal and an epitaxial layer at both ends of the low-resistivity N+ substrate, respectively. The top of the epitaxial layer has several trenches, the sidewalls of which are covered by a first dielectric layer. A split gate and a control gate are disposed within the trenches. The control gate and the split gate are isolated by a second dielectric layer within the active region, and short-circuited within the transition region. The short-circuited portion of the control gate has several P-type regions, which are connected by N-type regions. This invention introduces multiple PN junctions between the control gate and the split gate in the transition region of a conventional split-gate field-effect transistor, forming back-to-back Zener diodes. When an ESD event occurs, static charge is discharged through the Zener diodes, thereby ensuring that the voltage between the gate and source does not exceed the rated gate-source voltage, preventing gate-source breakdown and device damage.
Owner:CHINA ZHENHUA GRP YONGGUANG ELECTRONICS CO LTD STATE OWNED NO 873 FACTORY
Angular measurement device for scanning device of laser radar, angular measurement method
The application discloses an angle measuring device, method and laser radar of a scanning device. The device comprises a conductor, an angle measuring circuit; wherein the scanning device comprises a scanning mirror, one side of the scanning mirror is a reflecting surface, the other side is a mounting surface, and the scanning mirror can be deflected around at least one axis; the conductor is fixed on the mounting surface; the angle measuring circuit comprises a resonance system and a sampling part, the resonance system comprises an inductive element and a capacitor, the inductive element is fixedly arranged at a preset distance from the static position of the conductor; the sampling part samples and outputs the electric signal of the resonance system, and is used for determining the parameters of the resonance system, so as to determine the deflection angle of the scanning mirror. The purpose of measuring the deflection angle of the scanning mirror is achieved.
Owner:HESAI TECH CO LTD
A database-based web service log analysis and error trace method, device and system
PendingCN122285345AIt is difficult to quickly assign blame when solving errorsSolve distribution problemsTimestampWeb service
This application discloses a database-based method, apparatus, and system for web service log analysis and error tracing, comprising: acquiring runtime exception logs containing thread ID, timestamp, and call stack, and interface access logs containing interface name, thread ID, interface entry timestamp, and response time; accurately matching the two types of log records based on the condition that the thread IDs are the same and the runtime exception timestamp is within the window formed by the interface entry timestamp and the interface entry timestamp plus the response time; associating the matched interface with the responsible developer based on a pre-defined interface-developer mapping relationship; and finally pushing the error details and developer information to the corresponding terminal. This application utilizes the thread ID + time window matching mechanism and responsibility mapping to automate the entire process from error discovery and responsibility determination to dispatch, solving the problems of difficult error location, unclear responsibility attribution, and low dispatch efficiency in large-scale development teams, and significantly shortening the problem resolution cycle.
Owner:CHINA LIFE INSURANCE CO LTD
Resin injection device, system and method, use of a resin injection system, an underground rock drilling machine, and
PendingCN121986207Adoes not affect reliabilityshort installation timeAnchoring boltsLine tubingRock cutting
Resin injection devices, systems, and methods, uses of resin injection systems, subterranean rock drilling rig, and rock anchor installation methods. The invention relates to a resin injection device (60) for an underground rock drilling machine (10), such as a roof jumbolter, anchor cable drilling machine or drill jumbo, having at least one rock drilling machine (12) with a flushing head (14). The invention proposes that the resin injection device (60) comprises an adapter unit (16), which is embodied as a flushing fluid and resin manifold (18), which adapter unit (16) is configured to be inserted directly between the flushing opening (20) of the (original) flushing head (14) and the flushing fluid supply line (22) of the underground rock drilling rig (10).
Owner:GEOBRUGG AG