10results about How to "Effective constraints" patented technology

This utility model relates to the field of dust and waste conveying technology, and in particular to a closed conveying device for dust and waste from roadheaders and anchorers. It includes a conveying frame, a conveying component, and multiple idlers. The conveying frame has two first conveying rollers symmetrically and rotatably connected to its inner wall. The conveying component includes a conveyor belt tensioned and sleeved on the two first conveying rollers. The working surface of the conveyor belt has a V-shaped conveying groove along its width. Multiple idlers are arranged at intervals along the conveying direction within the conveying frame and are rotatably connected to the inner wall of the conveying frame. In this utility model, the V-shaped conveying groove on the working surface of the conveyor belt effectively constrains the waste, preventing it from dispersing during conveying, reducing the exposed area of ​​the waste, and lowering the possibility of dust generation. The idlers provide linear support to the conveyor belt, ensuring stable operation and preventing waste from scattering due to belt swaying, thus improving the stability and reliability of the conveying process.

This utility model relates to the field of medical assistance technology and discloses a detachable stretcher bed for restraining mental patients. It includes a stretcher and a bed frame. Casters are installed at the bottom of the bed frame, and a mattress is placed on the stretcher. The stretcher slides on the bed frame, and a moving mechanism is installed on the bed frame to drive the stretcher to move along the width and height of the bed frame. A support unit is installed at the bottom of the stretcher to provide support for the stretcher after it has slid along the bed frame. Several restraint units are hidden on both sides of the stretcher along its length. The moving mechanism drives the stretcher to slide along the bed frame, allowing staff to quickly separate the stretcher from the bed frame. The hidden restraint units on both sides of the stretcher can effectively restrain the patient when needed while avoiding discomfort caused by the patient seeing the restraints. The restraint units reduce the risk of injury to staff and staff during patient stress, and the detachable nature of the stretcher prevents inhumane practices such as carrying patients later.

The treadmill comprises a base and a runway arranged on the base, the treadmill further comprises a stand column arranged on the base, the stand column is located in front of the runway, a containing bin is arranged on the side, away from the runway, of the stand column, a safety belt and a winding structure rotationally arranged on the stand column are arranged in the containing bin, and one end of the safety belt is connected with the winding structure; a safety belt outlet is formed in the side, facing the runway, of the stand column, the safety belt outlet is communicated with the containing bin, and at least part of the safety belt extends out of the safety belt outlet. The utility model provides a treadmill to solve the technical problems that a safety belt of an existing treadmill causes the movement range of a user to be too small, the user feels uncomfortable easily, and the user is prevented from using a whole treadmill runway.

The utility model discloses a stackable power supply module's magnetic shielding casing relates to power supply module technical field, including casing main part and positioning hole, casing main part includes high magnetic conductive metal layer, insulation buffer layer and shielding effectiveness enhancement layer, the outer surface of insulation buffer layer is provided with the shielding effectiveness enhancement layer, and the positioning hole is provided with the shielding effectiveness enhancement layer. A positioning column is arranged at the top of the shell body, and the positioning hole is formed in the bottom of the shell body. According to the magnetic shielding shell of the stackable power supply module, the top and the bottom of the shell main body adopt complementary concave-convex groove design, the top is provided with a convex positioning column and a groove type electrical connection interface, and the bottom is correspondingly provided with a positioning hole matched with the positioning column and a convex type electrical connection plug. The electrical connection plug of the lower power module shell body can be accurately inserted into the electrical connection interface of the upper shell body, electrical connection between the power modules is achieved, and no extra connecting wire is needed.

This utility model discloses a hardware frame for seat rotation, including a base plate with rails one, two, three, and four on its surface. Pulleys one and two are slidably disposed within rails four and three, respectively, while pulley three is slidably disposed within rails one and two, reciprocating between them. A guide rail is disposed on the inner wall of a connecting plate, and a slide rail is disposed within the guide rail. A locking mechanism is provided on the slide rail. The base plate has locking holes for limiting the movement of the connecting plate and support plate. Through the cooperation of the locking mechanism and different locking holes, the sofa cushion is stably fixed, preventing it from moving freely and ensuring safety and reliability. The locking mechanism automatically engages with new locking holes without additional operation, completing the locking process. This "lift-adjust-automatic locking" mechanism simplifies the operation steps of adjusting the sofa cushion, allowing for easy switching between cushions with a simple lifting and pushing motion, thus improving the user experience.

This invention relates to the field of battery fabrication, specifically disclosing a tetragonal zirconium dioxide / carbon sphere composite material and its preparation method and application. The method includes the following steps: (1) dissolving zirconium tetrachloride in a solvent, then adding dopamine, and after thorough dissolution and mixing, slowly adding ammonia water. As ammonia water is added, the solution gradually turns into a milky white opaque liquid. The solution is continuously stirred at room temperature until it gradually changes from milky white to brownish-black, obtaining a zirconium-based / polydopamine composite precursor; (2) centrifuging the obtained zirconium-based / polydopamine composite precursor, washing it to obtain a brownish-black precipitate, drying the brownish-black precipitate to obtain a brownish-black precursor powder; (3) calcining the precursor powder to obtain a tetragonal zirconium dioxide / carbon sphere composite material. This invention successfully constructs a metastable tetragonal zirconium dioxide composite catalyst induced by polydopamine and confined to the surface of carbon spheres.

This invention discloses a graphene-coated silicon nanocomposite material, its preparation method, and its application, belonging to the field of battery materials technology. The preparation method of this composite material includes: firstly, removing the oxide layer on the surface of the silicon nanocomposite and performing plasma activation to obtain silicon nanocomposite with active sites and functional groups on the surface; dispersing it in a carbon source precursor solution, mixing it evenly, and then centrifuging and drying it at low temperature to obtain a silicon-coated precursor; under inert gas protection, carbonizing the silicon-coated precursor at 500-700℃ and simultaneously introducing it into a catalyst precursor, then introducing a carrier gas containing hydrogen and carbon, and heat-treating it at 800-950℃; finally, acid washing, water washing, and drying to obtain the target material. This invention achieves low-temperature controllable growth of graphene by optimizing process parameters. In the prepared core-shell composite material, 1-30 few-layer graphene shells are tightly bonded to the silicon nanocomposite core. When used as a negative electrode active material for lithium-ion batteries, it exhibits high specific capacity, excellent cycle stability, and rate performance. The process is easily scalable and has promising application prospects.

The embodiment of the utility model discloses an emergency severe body position restraining and transferring device. The emergency severe body position restraining and transferring device comprises a base, a rotating platform, a rotating driving mechanism arranged in the base, a multi-section type supporting platform, a power source arranged in the base and a control panel. The multi-section type supporting platform adapts to the restraining requirements of various body positions such as lying and sitting postures, flexible transfer is achieved through the rotating platform and the wheel bodies, the patient is fixed in a sectional mode through the adjustable restraining assembly, the four limbs of the patient are effectively restrained, and the patient is prevented from being accidentally injured or disturbed in treatment.

The invention discloses a domain knowledge enhanced retrieval-driven workflow generation method and system, and the method comprises the steps: receiving a natural language demand of a user, and retrieving a high-correlation candidate workflow template from a pre-constructed domain structured knowledge base through a mixed strategy of fusing sparse retrieval and dense retrieval; systematically extracting task step definitions, dependency graphs, API (Application Program Interface) calling specifications and domain constraint conditions in the candidate templates to form a structured knowledge element set; deeply fusing the knowledge set with user requirements, and constructing a structured cue word containing task description, knowledge reference and generation constraint; and generating a high-quality executable workflow code meeting the standard of the target platform by utilizing the large model. According to the method, the problems of poor code normalization caused by lack of domain knowledge, low retrieval correlation caused by a single retrieval strategy, insufficient flexibility caused by a hard coding template and the like in an existing method are effectively solved, and the accuracy, the normalization and the practicability of workflow code generation are remarkably improved.

The application discloses a structured generation type point of interest recommendation method and system based on a large language model, and the method comprises the following steps: formulating each point of interest entity into a semantic tuple; introducing a special attribute identifier as a structural boundary signal of a single check-in record comprising a point of interest entity and time, and reconstructing the single check-in record into an explicitly aligned structured sequence; constructing an input prompt word based on the structured semantic tuple expression and a historical check-in sequence; extracting a hidden vector corresponding to each special attribute identifier of a target prediction tuple in a last hidden state of the large language model based on the structured semantic tuple expression and the input prompt word; constructing a cross-attribute alignment loss based on a geometric distance, and then constructing a total loss function; integrating a global prefix tree pruning and a dynamic space-time penalty algorithm in an inference stage to constrain the generation process within a legal entity space and a physically reachable domain; inputting the structured sequence into the large language model, and training the model by using the total loss function to obtain a trained recommendation model.