11results about How to "Achieve hold" patented technology

The invention discloses a multi-path distribution self-starting fire extinguishing device which comprises a fire extinguishing tank, a shunt, an alarm and a fusible pipeline, the fire extinguishing tank is provided with a liquid outlet, the liquid outlet is connected with a branching device through a main pipeline, one end, close to the branching device, of the main pipeline is communicated with an external air source through a pressurizing pipeline, the pressurizing pipeline is provided with a one-way valve, the branching device is connected with a plurality of branch pipelines extending to an inflammable area, and the branch pipelines are communicated with the main pipeline. The branch pipelines are connected with fusible pipelines located in the corresponding flammable areas. A pressure relief sensor is arranged on the fire extinguishing tank, and the pressure relief sensor is connected with the alarm in a closed loop manner; and the fire extinguishing tank is also provided with an anti-decompression valve and a pressurizing valve. The fire extinguishing device is reasonable in structural design and easy and convenient to operate, fire disasters can be extinguished automatically, rapidly and effectively, the safety and reliability of the agricultural machinery can be improved, and a powerful guarantee is provided for safe operation of the agricultural machinery.

This utility model discloses a data processing board for trackside equipment, belonging to the technical field of subway trackside equipment. It includes a data processing module, a soft-start output module, a power-down voltage monitoring module, an RTC real-time clock module with a first energy storage capacitor, a power supply module with a second energy storage capacitor, and a data interface module. The data processing module is electrically connected to the other modules. The power supply module provides the operating voltage to the board, and its second energy storage capacitor temporarily supplies power to the data processing module during brief external power outages to record the voltage status data at the moment of power failure. The first energy storage capacitor of the RTC real-time clock module maintains clock operation for a preset duration after power failure. This utility model solves the problems of easy data loss and clock failure during power failures in traditional boards. It features high structural integration, stable operation, and accurate recording of power-down fault conditions, meeting the data continuity requirements of subway trackside equipment.

The present invention relates to a two-way double-storage type underground automatic explosion-proof device for coal mines, comprising a shock wave receiving rod, a piston cylinder and a piston body slidably arranged in the piston cylinder, the piston body being connected to the shock wave receiving rod; two trigger holes arranged opposite to each other are provided on the side wall of the piston cylinder, the two opposite trigger holes are respectively connected to a powder spraying assembly, and a boss opposite to the trigger hole is fixedly arranged on the piston body; the powder spraying assembly comprises a vent pipe fixedly connected to the trigger hole, a trigger shaft slidably arranged in the vent pipe, and a powder storage cover and a high-pressure air cavity fixedly connected to the vent pipe, the vent pipe is provided with an injection hole and an air inlet hole connected to the high-pressure air cavity, and the injection hole is located between the air inlet hole and the trigger hole in the axial direction of the vent pipe, and a sealing section sealingly slidingly connected to the inner wall of the vent pipe is provided on the trigger shaft between the air inlet hole and the injection hole. The present invention improves the concentration effect of the fire extinguishing powder when the ejection ends of the two powder storage covers face the same direction, thereby increasing the concentration of the fire extinguishing powder, improving the explosion-proof effect, and the position of the powder storage cover can be adjusted.

This invention discloses a composite flow control device of needle valve and pressure valve and its working method, which solves the problem that fluid controllers in the prior art all use single control. It has the beneficial effects of realizing the switching between pressure valve and needle valve and avoiding fluid contamination. The specific solution is as follows: A composite flow control device of needle valve and pressure valve includes a support frame, which supports a switching control structure. A needle valve and a pressure valve are arranged sequentially on one side of the switching control structure. The needle valve includes a needle valve body, a first flow channel is provided in the needle valve body, the needle valve body is connected to an isolation shell, an internal rotor is provided in the isolation shell, an external rotor is arranged circumferentially outside the isolation shell, the bottom of the isolation shell is fixedly connected to a screw, and part of the screw is located inside the internal rotor to form a helical drive between the internal rotor and the internal rotor. One end of the internal rotor is provided with a needle-shaped component that can be inserted into the first flow channel. The switching control structure includes a rotating shaft that passes through the support member. The rotating shaft is rotatable and is connected to the sun gear of the planetary gear component.

The utility model provides a pitching structure and a toy. The pitching structure comprises a shell, a pitching assembly, a driving assembly, a transmission assembly and a limiting assembly. When the driving assembly drives the output end of the transmission assembly to rotate in the first direction, the pull rope can be tensioned. When the pull rope is tensioned, the reset piece is compressed, so that the pitching assembly rotates towards the second direction and is in a buckled state; when the driving assembly drives the transmission assembly to rotate in the direction opposite to the first direction, the transmission assembly releases the pull rope, the reset piece resets, and the pitching assembly can be rotationally opened from the buckled state in the direction opposite to the second direction, so that the pitching assembly is in the opened state. According to the pitching structure, the driving assembly, the transmission assembly and the limiting assembly are ingeniously matched with one another, the rocker arm can be buckled, the opening state of the rocker arm can be kept and switched, and when a toy shell is installed on the pitching assembly of the pitching structure, the interestingness of a toy is improved.

This invention discloses a multi-rotor, spatially coordinated, multi-pose unmanned aerial vehicle (UAV) structure. The structure comprises at least two sets of rotor units, each rotatably connected to a payload platform via a rotary joint to achieve spatial pose transformation of the payload platform. The payload platform also includes an attitude detection unit, a coordination control unit, and an interface unit. The attitude detection unit, interface unit, and the drive motors of the rotor units are connected to the coordination control unit. The attitude detection unit detects the attitude of the payload platform. The coordination control unit, based on data input from the attitude detection unit and interface unit, controls the drive motors of the rotor units to achieve coordinated operation among the multiple sets of rotor units, thereby completing or maintaining the pose transformation of the payload platform. This invention enables the payload platform to change its spatial orientation in multiple directions, allowing for convenient adjustment of the equipment mounted on the payload platform to operate in the required posture for better aerial operations.

The utility model provides a transfer case electric control pneumatic gear shifting device, a vehicle transfer case and a vehicle, which comprises three gear shifting cylinders respectively corresponding to three different gears of the vehicle transfer case; a high-gear electromagnetic valve, a neutral-gear electromagnetic valve and a low-gear electromagnetic valve are installed on the valve body in an inserted mode, a main air inlet is formed in the valve body, and the high-gear electromagnetic valve, the neutral-gear electromagnetic valve and the low-gear electromagnetic valve are each provided with an air inlet, an air outlet, an air exchange opening and three electromagnetic valve connectors. The three electromagnetic valve plug-in connectors are electrically connected with the high-gear electromagnetic valve, the neutral-gear electromagnetic valve and the low-gear electromagnetic valve in a one-to-one correspondence mode. According to the vehicle transfer case gear shifting device, switching and maintaining of the gears of the vehicle transfer case can be directly achieved only through opening and closing control and mutual cooperation of the three electromagnetic valves, and compared with a vehicle transfer case gear shifting device in the prior art, the vehicle transfer case gear shifting device is simpler in structure.

The utility model discloses a driver controller for locomotive operation, which comprises an installation bottom plate, a handle assembly arranged above the installation bottom plate, a cam installation seat assembly connected with the handle assembly, a vertical plate assembly fixedly arranged on the side surface of the cam installation seat assembly, a cross coupling arranged inside the vertical plate assembly, a sliding block arranged on the cross coupling, and a sliding block arranged on the sliding block. According to the transmission device, gear keeping and accuracy can be achieved through meshing of the limiting cam and the limiting spring block, meanwhile, the transmission device further has a self-locking function, and the control safety of a locomotive is improved.

The utility model discloses a drilling device for electronic product processing, which comprises a platform, a drilling table, a position adjusting mechanism, a symmetrical clamping mechanism and a clamping auxiliary mechanism, the position adjusting mechanism comprises an adjusting groove, an adjusting hole, a side plate and a mounting plate, the symmetrical clamping mechanism comprises a clamping pipe, a fixed inner pipe, a clamping rod, a locking block, a pressing block, a pressing spring, a pressing plate and a reset spring, the clamping auxiliary mechanism comprises a spiral pipe, a spiral rail, a thrust bearing, a directional pipe, a gradient block, an unlocking block and a position adjusting mechanism, accurate adjustment of the drilling position is achieved, the machining precision and quality are improved, and the machining efficiency is improved. According to the clamping device, stable and reliable supporting, positioning and symmetrical clamping mechanisms are provided, reliable clamping of workpieces is achieved, the workpieces are prevented from moving or falling off in the machining process, and the machining quality and safety are guaranteed.

The utility model discloses a locatable hand-cranking device for a study desk, which comprises a transmission rod used for driving a lifting desk leg to lift, the transmission rod is driven by a crank to rotate, a positioning unit is arranged between the transmission rod and the crank, the positioning unit comprises a guide piece arranged on the transmission rod, the crank is connected with a transmission sleeve, and the transmission sleeve is connected with the transmission rod. The transmission sleeve is provided with a cavity for containing the guiding piece, the guiding piece is provided with a guiding strip, the guiding strip is provided with a positioning block capable of moving in a reciprocating mode in the radial direction of the transmission sleeve, and the guiding groove is provided with a positioning hole used in cooperation with the positioning block. By arranging the positioning unit, the position of the crank is kept, the positioning block and the guide piece are integrally formed in an injection mode in order to facilitate production and manufacturing, meanwhile, the transmission sleeve and the crank can also be integrally formed in an injection mode, machining procedures are reduced, movement of the positioning block is achieved through the arranged supporting arm, and machining efficiency is improved. According to the utility model, the problem that the use position is unstable due to the fact that the crank is easy to axially move during use is solved.

The invention discloses a cooperative garbage can cover opening and closing control system and method for an unmanned sweeper. The system comprises a first photoelectric sensor and a second photoelectric sensor which are horizontally arranged in a spaced mode. The relay group and the electric actuator are electrically connected with the first photoelectric sensor and the second photoelectric sensor; the relay set is configured to execute the following steps: the first photoelectric sensor and the second photoelectric sensor are triggered simultaneously to open the garbage can cover; if neither the first photoelectric sensor nor the second photoelectric sensor is triggered, the garbage can cover is closed; only the first photoelectric sensor or the second photoelectric sensor is triggered, locking of the electric actuator is executed, and the garbage can cover is kept at the current opening degree; the system is specially designed for the cooperative garbage can of the unmanned sweeper, a pure hardware logic control system composed of a sensor and a relay is adopted, a microprocessor and a complex algorithm are not needed, three-state control logic is constructed, and the system is suitable for the operation processes of repeated forward and backward movement, fine adjustment, alignment and the like of the unmanned sweeper.