11results about How to "Loud noise" patented technology

The application belongs to the technical field of drill bits, and discloses a noise reduction drill bit and a use method thereof, which comprises a drill body, a drill bit for drilling, an auxiliary drill bit arranged between the drill body and the drill bit for assisting drilling, a cleaning assembly arranged in the drill body for cleaning, and an auxiliary assembly arranged in the drill body for assisting ejection, a circular through hole for feeding is arranged in the drill bit, and one end of the circular through hole is in communication with the interior of the drill body. The application utilizes the equipment to push the push rod to move, so that the push plate can be well driven to move in the interior of the drill body. Meanwhile, the support rod, the positioning groove and the moving block are used in cooperation, so that the push plate can be assisted to push during the pushing process, the pushing effect is better, and the noise reduction effect is also better.

The utility model provides a cup cover assembly and a food processor. According to one embodiment of the invention, the cup cover assembly comprises an outer support, an inner support and a glass cover; the inner support comprises a first abutting portion and a step portion which are connected, the outer support is arranged on the periphery of the step portion in a sleeving mode, the first abutting portion abuts against the upper surface of the glass cover, and the step portion is supported on the lower surface of the glass cover. According to the scheme, a user can observe food materials in the food processor through the cup cover, and meanwhile the risk that the user is scalded can be reduced.

This invention relates to a hyperbaric oxygen chamber system with adjustable oxygen concentration. The system includes a main unit and a chamber. The main unit comprises a main control module, an oxygen regulation module, and a pressure regulation module, all electrically connected to the main control module. The pressure regulation module includes a low-oxygen air regulation submodule and a pressure-maintaining air submodule. The pressure-maintaining air submodule includes a first air compressor, a pressure relief valve, and a first sensor. The oxygen regulation module includes a second air compressor, a separation valve, a molecular sieve tower, a flow-limiting valve, and a vacuum pump. The low-oxygen air regulation submodule includes a three-way valve and a one-way valve. This invention's adjustable oxygen concentration hyperbaric oxygen chamber system can reduce the production cost of hyperbaric oxygen chamber systems, improve the user experience, and allow the oxygen concentration within the chamber to be adjusted below that of air, thus expanding its application to low-oxygen training and testing environments.

This invention provides an energy-saving large-scale cooktop radiant heating core module device and its preparation method. The device includes a heat-insulating heating element, which comprises a bottom fixed mounting plate. Multiple blank plate modules are evenly distributed on the bottom fixed mounting plate. Each blank plate module has a heat-insulating and insulating module assembly on its outer side. Each heat-insulating and insulating module assembly has an easily removable protective plate on its outer side, and each easily removable protective plate has an overload protector module on its outer side. This invention solves the problems existing in traditional kitchen stoves by integrating the energy-saving large-scale cooktop radiant heating core module device into the stove. Furthermore, the heating method of the energy-saving large-scale cooktop heating core module is noiseless and generates no waste heat, resulting in a clean and comfortable operating environment, optimizing the kitchen environment, not raising the operating environment temperature, eliminating the feeling of being roasted by an open flame, eliminating radiation, improving the user experience, and making operation safer.

The utility model discloses a kind of rotary hook mechanism and sewing device, it is related to sewing equipment technical field, and it includes: fixed support;Motor;Motor is fixed in the first surface of fixed support, the motor rotating shaft of motor is rotatably installed in support through hole, and the end of motor rotating shaft extends to the second surface side of fixed support, and first pulley is set on end portion;Rotary hook;Rotary hook located in the second surface side includes: rotary hook shaft, second pulley, rotary hook main body and rotary hook shell;Rotary hook shaft's first end is fixedly connected with fixed support;The outer periphery of rotary hook shaft is set with second pulley, second pulley can relatively rotate around the axis of rotary hook shaft, to drive rotary hook shell around the axis of rotary hook main body;Synchronous belt;Synchronous belt is set on the outer periphery of first pulley and second pulley.This technical solution changes the traditional transmission mode, through synchronous belt transmission and rotary hook shaft fixedly, reduce noise, and simultaneously, synchronous belt is convenient for manufacturing and installation, reduce the manufacturing and assembly cost of this rotary hook mechanism.

This utility model belongs to the field of trolley technology, and specifically relates to a trolley that facilitates straight-line travel. It includes a balance scooter and a trolley body, connected by a connecting frame. The connecting frame is detachably connected to the trolley body and rotatably connected to the balance scooter. The balance scooter has a positioning groove, and the connecting frame has a positioning element and an elastic element. The elastic element drives the positioning element to engage with the positioning groove, fixing the balance scooter and the connecting frame relatively, thus allowing the trolley to maintain straight-line travel or maintain a certain angle of rotation. Under external force, the positioning element can move relative to the positioning groove, allowing the balance scooter and the connecting frame to rotate relative to each other, thus enabling the trolley to turn flexibly. The purpose of this utility model is to provide a user-friendly trolley that facilitates straight-line travel.

The utility model discloses a diaphragm pump structure. The diaphragm pump structure comprises a pump body; the one-way valve body is arranged on one side of the pump body; the liquid inlet one-way valve is arranged between the pump body and the one-way valve body; the liquid outlet one-way valve is arranged between the pump body and the one-way valve body; the diaphragms are arranged in the pump cavities of the pump body; the diaphragm driving mechanism is arranged on the other side of the pump body and is used for driving each diaphragm to reciprocate; the liquid inlet one-way valve and / or the liquid outlet one-way valve are / is diaphragm type one-way valves. The liquid inlet one-way valve and the liquid outlet one-way valve are diaphragm type one-way valves, fit and separation between the liquid inlet one-way valve and the liquid outlet one-way valve and a flow channel are achieved through elastic deformation, one-way flowing of fluid is controlled, high-precision machining is not needed, use cost is low, limitation of installation angles and positions is avoided, and installation and use are more flexible.

This invention discloses a robust control method and system for brain-controlled unmanned aerial vehicles (UAVs) based on a large model, belonging to the field of brain-computer interface and UAV control technology. Specifically, it includes: acquiring EEG signals and identifying discrete brain-controlled event commands; inputting these commands into a large model intent reconstruction module after sliding window serialization encoding; outputting action candidates with multiple risk levels; performing parsing verification, risk assessment, and motion feasibility checks on the action candidates; selecting the final action and mapping it to parameterized motion skill atoms; having a state machine manage the execution of the skill atoms; implementing closed-loop execution via the flight control interface and monitoring safety boundaries; and triggering hovering and return-to-home actions in case of anomalies. This invention achieves intent reconstruction and risk-layered decision-making for brain-controlled commands, constructing a full-link safety closed-loop control system. It significantly improves the control stability, safety, and system resilience of brain-controlled UAVs under uncertain command conditions, reduces the risk of false triggering, and increases the mission success rate.

The application provides an image processing method and device, a computer readable storage medium and a terminal device, the image processing method comprising: obtaining an image to be processed; calculating a statistical value of low-frequency information of the image to be processed in a luminance domain; determining a corresponding mapping curve according to a scene to which the statistical value belongs, the mapping curve representing a mapping relationship between an original luminance value and an adjusted luminance value of each pixel in the luminance domain, different scenes corresponding to different mapping curves; determining an adjusted luminance value of each pixel in the image to be processed according to the mapping curve; and mapping a gain of the adjusted luminance value of each pixel to each color channel of the corresponding pixel to obtain an adjusted image. The application provides an image processing scheme capable of improving the luminance of a low-light area of an image and avoiding overexposure of a highlight area.

The utility model discloses a novel energy -conserving mute door and window, including window frame, the right side wall of window frame is provided with two hinges, is installed with the window on the hinge, is provided with double -glazed glass in the middle part of window, and the left part of window front end wall is provided with safety lock, the bottom end of window frame is provided with the bottom groove, and the bottom of bottom groove is provided with a plurality of recess, is provided with the buffer strip on the bottom groove, both inside wall of window frame is provided with the lateral groove, and the sound absorption cotton layer is all provided with in lateral groove, and the outer side wall of double -glazed glass is provided with sealing strip, and sealing strip is made of rubber material. The sound absorption cotton layer in lateral groove can absorb the noise produced when the window frame is closed with the window, realizes the mute, and the buffer strip is made of silica gel material, can increase the buffer of window frame bottom groove, avoids the noise of producing bigger because of the force is too big, and can fill the installation gap, prevents rainwater leakage and enhances the air tightness, prevents the hidden danger of producing safety.

The application discloses a hierarchical buffer, a telescopic support and an electric pedal. The hierarchical buffer is applied to the telescopic support of the electric pedal, and the front surface of the hierarchical buffer is in a wave shape. When first-stage compression buffering occurs, the wave crest of the wave shape is compressed to a certain extent. When second-stage compression buffering occurs, the wave crest of the wave shape is further compressed or the front surface of the wave shape is compressed to be close to a plane. When the telescopic support is in a retracted state, the hierarchical buffer generates the first-stage compression buffering, and a gap exists between the mounting seat of the telescopic support and the telescoping rod. When the telescopic support is in the retracted state and the telescoping rod bears a lifting force, the hierarchical buffer generates the second-stage compression buffering to eliminate the gap, so that the telescoping rod can abut against the mounting seat, and thus the telescopic support forms a rigid support body in the first direction and the second direction. In the above manner, the telescopic support provided by the application can be safely, conveniently and comfortably lifted when the telescopic support is in the retracted state.