3results about How to "Elimination distance" patented technology

The invention discloses a parking braking device for a bulldozer and a braking method, and belongs to the technical field of engineering machinery. The device mainly comprises a gear pump, an oil tank, a parking electromagnetic valve, a high-pressure ball valve, a single-action brake oil cylinder with a built-in reset spring and the like. The problems that an existing bulldozer depends on manual braking, response is delayed, and the braking distance is uncertain and potential safety hazards exist due to uneven operating force are solved. The core of the method is that when a vehicle runs, a parking electromagnetic valve is electrified and conducted, pressure oil overcomes spring force to enable a brake oil cylinder to contract, and a brake belt is loosened; when the vehicle is powered off, the parking electromagnetic valve loses power and resets, the brake oil cylinder automatically stretches out under the action of the spring, and the brake belt is driven to be held tightly to achieve automatic parking. According to the invention, quick, automatic and forced parking at the moment of power failure is realized, the influence of human factors is eliminated, meanwhile, the functions of safely adjusting the brake belt and monitoring and alarming the system state in real time in a flameout state are realized, and the parking reliability and the operation safety are remarkably improved.

This invention discloses a self-positioning dual-band laser spatial interaction method applied to a handheld intelligent pointing remote control terminal. The method includes: in the initialization phase, acquiring a target image via an RGB camera, establishing a homography mapping relationship between the image coordinates and the target's local normalized coordinates using an edge-side NPU, and binding the target ID with a 2.4G receiver ID; in the normal pointing phase, turning off the RGB camera and providing indication only through visible light laser; when triggered by a button, activating the infrared laser and infrared camera, calculating normalized coordinates based on the mapping relationship, and sending them to the bound host; when the light spot approaches the target boundary, waking up the RGB camera to identify the new target, automatically switching the mapping relationship and receiver link. This invention achieves self-positioning interaction with zero infrastructure dependence, ultra-low power consumption, and seamless switching between multiple hosts, suitable for multi-screen command, electronic sand tables, and dynamic scenarios.

The utility model discloses a kind of chain plate type upper unloading coil trolley tunnel cover plate, it is related to hot-rolled cold-rolled plate strip technical field, including side surface guide frame, sprocket, conveying chain, cover plate, top guide frame, pull rod and bottom guide frame and be set on the unloading coil trolley of conveying chain, conveying chain selects the conveying chain with L-shaped appendix plate, two conveying chains and a cover plate form a group of chain cover plate unit, sprocket is arranged above and below the two side walls of tunnel, the number of sprocket is four, sprocket plays the steering effect of chain cover plate, side surface guide frame is arranged on the side wall of tunnel, top guide frame is arranged above tunnel, bottom guide frame is arranged on the bottom surface of pit.The upper end of trolley top cover plate in the utility model is always a plane, when upper unloading coil trolley is transverse on track, chain cover plate moves along, run flexible, always guarantee that there is cover plate above tunnel, and the top surface of cover plate is flush with workshop terrace, safe and reliable.