7results about How to "Avoid contact wear" patented technology

This invention belongs to the field of headphone technology, and specifically relates to a quick-release structure for a headphone battery with elastic contact. It includes: a sound-generating unit with a mounting groove containing a receiver, and at least two inductive elements; and a battery unit with a conductive plate located inside the battery unit. By placing the conductive plate inside the battery unit, leakage caused by contact between the battery electrodes and the external environment is prevented. When the battery unit needs to be placed on the sound-generating unit, the receiver contacts the conductive plate, thereby establishing circuit continuity. This allows for easy assembly and disassembly of the battery unit and the headphone's sound-generating unit. During assembly, simply placing the battery unit on the sound-generating unit allows for automatic alignment and circuit connection through physical contact, eliminating the need for soldering, ribbon cables, or connectors, significantly reducing the difficulty and cost of automated assembly.

The application provides a WC-based hard alloy material for drilling super-deep wells, relates to the technical field of hard alloys, and is composed of a wear-resistant layer, a transition layer and a toughened supporting layer. The wear-resistant layer, the transition layer and the toughened supporting layer all include base alloy components and additive components. The base alloy components of the three layers all include WC powder, Ni powder, Co powder, Cr powder, Mo powder, NbC powder, Cr3C2 powder and VC powder. The WC powder particle size increases gradually between the wear-resistant layer, the transition layer and the toughened layer, and the Cr3C2 powder addition amount of the three layers is different. The material is designed by the partition organization of the wear-resistant layer, the transition layer and the toughened supporting layer, so that the WC-based hard alloy material is obtained. While the high corrosion resistance, erosion resistance and wear resistance are maintained, the local anti-cracking and anti-contact fatigue capacity of the sealing contact area is improved.

The utility model relates to the technical field of boiler accumulated ash cleaning, and discloses a pulse type boiler accumulated ash cleaning device which is characterized in that a driving motor is arranged to drive a driving gear to rotate, the driving gear is meshed with a linkage gear to enable an I-shaped rotating wheel to rotate, and then a gas distribution seat, a vertical pipe and a cleaning pipe are driven to rotate synchronously; meanwhile, compressed gas equipment supplies gas to a hollow groove in an I-shaped rotating wheel through a gas inlet pipe and a rotating joint, the gas is distributed to a vertical pipe and a cleaning pipe through a gas cavity, finally, high-pressure pulse airflow is sprayed to the inner wall of the boiler body through a pulse nozzle, and the rotating cleaning pipe drives the pulse nozzle to form an annular scanning track; the cleaning pipes distributed in a staggered mode enable the pulse nozzles to generate multiple layers of spraying areas at different radial positions to cover the complex curved surface of the inner wall of the boiler, impact force of pulse airflow enables accumulated dust to be separated from the pipe walls, non-contact all-directional cleaning is achieved, the problem of contact abrasion of a traditional scraper blade is avoided, the cleaning range is enlarged through rotating motion, and the cleaning efficiency is improved. The problem of a coverage blind area of a fixed nozzle is solved.

The utility model discloses a soft soil foundation reinforcing treatment device for building engineering construction, including rammer base disc, counterweight hammer disc and hanger, the rammer base disc top end superposition has counterweight hammer disc, and the most upper layer tray body surface of counterweight hammer disc is fixed with hanger in the middle, the rammer base disc surface is fixed with the side bolt and center bolt for respectively wearing out counterweight hammer disc and hanger, still include lock mechanism, set up lock mechanism through the counterweight hammer disc above the rammer base disc, after the long -tube nut of lock mechanism is screwed and locks at the side bolt and center bolt of counterweight hammer disc, the long -tube nut of buffer fixed ring and pressure fixed ring can be carded and limit side bolt place groove limit stop loose, and the long -tube nut at hanger can be carded and limit stop loose of L shape inner lock board, prevent long -tube nut loose in the rammer impact process, and simultaneously, U shape muscle can cooperate with fixed column pin and stop L shape inner lock board, avoid L shape inner lock board and pressure fixed ring and be thrown out.

The utility model relates to an air valve of a boiler soot blower, and belongs to the technical field of air valves of boiler soot blowers, the air valve comprises a valve shell, a valve cover connected with the valve shell and a stainless steel ball located in a cavity formed by the valve shell and the valve cover, a plurality of pairs of limiting sliding rods are arranged in the valve shell, the stainless steel ball penetrates through the limiting sliding rods, a sealing ring is communicated with the interior of the valve cover, and the sealing ring is connected with the valve cover. A sealing ring is arranged in the valve shell, a sealing cylinder is slidably communicated in the sealing ring, a rubber sealing seat is arranged on the lower side of the sealing cylinder, a stainless steel spring is arranged between the rubber sealing seat and the sealing ring, an elastic buffering piece is arranged in the valve shell, and a rubber buffering seat is arranged at the other end of the elastic buffering piece. According to the boiler soot blower air valve, the stainless steel ball is effectively protected, directional movement of the stainless steel ball is achieved, the stainless steel ball is prevented from rolling and making contact with the inner wall of the valve shell and the inner wall of the valve cover to be abraded, and meanwhile the situation that the stainless steel ball moves to rigidly impact the valve shell and the valve cover under the air pressure effect to affect the sealing effect of the stainless steel ball is avoided.

This invention relates to the field of medical device technology, and more particularly to an APL valve for an anesthesia machine and its risk management method, comprising: acquiring knob calibration point information, setting magnetic components and a magnetic induction array; driving the knob to rotate to the calibration point, applying calibration pressure to construct a pressure-angle-voltage signal mapping table; acquiring real-time magnetic field data to obtain theoretical pressure values, and simultaneously acquiring real-time pressure values ​​of the circuit; calculating pressure errors to identify abnormal points; determining a standard test pressure based on the pressure error and actively applying it to obtain actual voltage signal values; calculating the difference between the actual voltage signal value and the standard value as a voltage compensation amount; adjusting the knob position according to the voltage compensation amount to obtain a compensated pressure setpoint; determining the risk based on the anesthesia machine's operating mode and the compensated pressure value, outputting the risk level, and executing proactive risk warnings. This invention can proactively diagnose mechanical degradation, automatically compensate for deviations, and provide warnings related to the operating mode, thereby improving the safety and reliability of the APL valve.

The application relates to the field of vehicle transmission technology and discloses a non-integer multiple magnetic pole proportion and wedge-shaped magnet magnetic force circulating hub system which comprises a bearing seat, a hub assembly, a wheel rim assembly, a first bearing group and a second bearing group. The bearing seat is fixedly connected with a vehicle suspension or a steering knuckle. The hub assembly is rotationally connected between the first bearing group and the bearing seat, the wheel rim assembly is rotationally connected between the second bearing group and the bearing seat, and the wheel rim assembly is coaxially arranged with the hub assembly. A first permanent magnet array is arranged on the hub assembly, and a second permanent magnet array is arranged on the wheel rim assembly. The first permanent magnet array and the second permanent magnet array are arranged between the hub assembly and the wheel rim assembly to form a magnetic field coupling, non-contact power transmission is realized, contact wear and lubrication dependence in traditional mechanical transmission are avoided, transmission efficiency is improved, and the service life of the system is prolonged.