8results about How to "Remove constraints" patented technology

The present invention provides an odor adsorption material, adsorption system and preparation method for a landfill, which can efficiently absorb H2S in a landfill. An odor adsorption material for a landfill, the raw material of which is a recycled fine aggregate prepared from recycled construction waste and recycled powder mixed with recycled fine aggregate, and the recycled construction waste contains quicklime or slaked lime. An odor adsorption system for a landfill, the system includes at least one intermediate adsorption subsystem and a topmost closure adsorption subsystem; the intermediate adsorption subsystem includes three functional layers, which are, from top to bottom, an upper gas collection layer, an odor adsorption layer II, and a lower gas collection layer; the closure adsorption subsystem includes six functional layers, which are, from top to bottom, a vegetation layer, a drainage layer, an impermeable layer, a drainage layer, an odor adsorption layer I, and a gas collection layer I, and the materials of the odor adsorption layer I and the odor adsorption layer II are the odor adsorption materials.

A stable fin type selection method comprises the steps that a single-layer stable fin or a double-layer stable fin is selected, when the single-layer stable fin is selected, the weight Weight1 = 7850 * S1 * d1n of the stable fin is calculated according to the thickness d1n of a stable fin plate and the lateral area S1 of the stable fin, and final parameters S1 and Weight1 are output; when a double-layer stable fin is selected, the stress Rw2 of the stable fin is evaluated and calculated according to the stress of a sub-fin plate and a T profile combined structure, then Weight 2 and S2 are obtained, a construction process weight P is introduced, and finally Judge is obtained, when Judge is larger than or equal to 1, a single-layer stable fin scheme is selected, and when Judge is smaller than 1, a double-layer stable fin scheme is selected. The course stabilizing fin is selected by judging the structure and performance of the stabilizing fin and comparing course stabilizing fin specification requirements and a load analysis method, guarantee is provided for reasonable design of the structure, advantages and defects are compared, limiting conditions are eliminated, and finally course stabilizing fin selection for ship types of different tonnages is achieved.

The invention relates to a grabbing task-oriented visual relationship understanding method and a grabbing task-oriented visual relationship understanding system. The grabbing task-oriented visual relationship understanding method comprises the following steps of: acquiring a scene image containing a plurality of objects; performing feature extraction on the scene image based on a deep convolutional network to obtain a basic feature layer of the scene image; inputting the basic feature layer into a target detection network, and obtaining classification information and position information of each object; the classification information and the position information are mapped to a basic feature layer to obtain a region of interest of each object, irrelevant object feature pairs are removed through a relation filter, and relevant object feature pairs are obtained; inputting the object feature pairs into a visual relation detection network to obtain a relation matrix; and the object grabbing sequence is determined by combining the grabbing task and the relation matrix, and the target object is grabbed according to the object grabbing sequence. According to the method, the reasonable grabbing sequence is obtained by understanding the visual relation of the multiple target objects in the complex scene, and the safety and reliability of the robot in the grabbing operation process are guaranteed.

The invention discloses a self-adaptive fixed time control method for a multi-uncertainty bridge crane system, and belongs to the technical field of crane control. In order to solve the problems of quick positioning and swing elimination of a bridge crane trolley under the influence of multiple uncertainties, the control scheme is as follows: establishing a bridge crane model with multiple uncertainties, and establishing a state equation through coordinate transformation; coordinate transformation is defined; constructing a Lyapunov function, and designing a virtual controller of a first subsystem; introducing a neural network, constructing a Lyapunov function, and designing virtual controllers of a second subsystem and a third subsystem; proposing a variable gain control method, and designing an adaptive law; designing a sub-controller and a control input signal; according to the self-adaptive fixed time control method disclosed by the invention, rapid positioning and swing elimination of the bridge crane under the influence of multiple uncertainties are realized, the working efficiency of the bridge crane is improved, and the requirements of rapid and accurate positioning and swing elimination of the bridge crane are met.

The invention relates to an injection mold. Comprising a fixed mold mechanism; the fixed die mechanism is slidably connected with the fixed die mechanism along a first direction; the sliding mechanism and the fixed mold mechanism are arranged in a sliding mode in the first direction, the sliding mechanism is used for forming an inverted buckle of the product, and when the movable mold mechanism slides away from the fixed mold mechanism, the sliding mechanism slides close to the movable mold mechanism so that the product can be separated from the fixed mold mechanism. When the movable mold mechanism slides away from the fixed mold mechanism, the sliding mechanism slides close to the movable mold mechanism to separate the product from the fixed mold mechanism, so that the constraint of the fixed mold mechanism on the product is eliminated, the product is expanded to a certain extent, and the friction force between a fixed mold ejector pin and the product can be reduced. In the process that the movable mold mechanism continues to move away from the fixed mold mechanism to drive the product to be separated from the fixed mold ejector pin, on one hand, the fixed mold ejector pin can be rapidly separated from the product, and therefore the machining efficiency of the product is improved. And on the other hand, damage to the fixed mold ejector pin and the product due to overlarge friction force is avoided, so that the forming quality of the product is improved.

The invention discloses casting equipment for navigation lifesaving equipment, and belongs to the technical field of lifesaving casting devices, the casting equipment comprises a casting device, a plurality of traction devices and lifesaving equipment, the casting device is provided with a single group of independent casting cavity channels, and the traction devices and the lifesaving equipment are both provided with a plurality of groups of independent casting cavity channels. Each group of traction devices is matched with a single group of lifesaving equipment in a one-to-one correspondence manner, and the plurality of groups of traction devices can be sequentially switched to be correspondingly matched with the casting station of the casting device. A single cavity channel is matched with a plurality of groups of switchable traction devices, so that continuous casting operation and independent traction matching of each lifesaving device are realized; the rope releasing speed is controlled in a closed-loop mode through weight data, the buffering allowance is reserved in the whole process to pull the rope, casting reverse damping is eliminated, the problems that existing equipment is low in rescue effectiveness, limited in casting performance and low in response speed are solved, and the maritime emergency rescue reliability is greatly improved.

This invention discloses a motor appearance inspection production line, including a frame, a conveying device, a top surface inspection device, a five-sided inspection device, and an endoscopic inspection device. The endoscopic inspection device is positioned between the top surface inspection device and the five-sided inspection device along the conveying direction. In the appearance inspection process, the endoscopic inspection device first inspects the internal condition of the motor. Before the five-sided inspection, motors that fail the endoscopic inspection are graded and removed to the first or second NG line, avoiding the use of five-sided inspection resources by defective motors. Endoscopic and appearance inspections are integrated in one step. The five-sided inspection device uses a transparent motor placement platform combined with a surrounding reflector group and a bottom single-camera architecture. Transmission imaging of the motor's bottom surface and reflection imaging of the four sides are acquired simultaneously in a single exposure, without the need for flipping. This invention eliminates the constraint of the flipping process on production cycle time, achieving highly efficient and automated integrated inspection of motor appearance and endoscopy.

The present invention relates to the field of welding technology, and discloses a single-sided spot welding structure and a welding method, wherein the structure comprises two overlapping sheet metal parts, and a gap is formed at a predetermined overlapping position; at least one of the sheet metal parts is formed with at least one boss portion protruding toward the other sheet metal part at a position corresponding to the gap, and the boss portion contacts the sheet metal part it faces when overlapping. The present invention can solve the problem of the inability to weld due to the existence of gaps in sheet metal and the instability of the gaps in actual production, thereby realizing the weldability of sheet metal overlaps; eliminating the constraint that single-sided welding must provide support force on the opposite side of the weld, thereby creating application conditions for single-sided welding on various structures of the body-in-white; the boss portion can be stamped and formed synchronously with other features of the sheet metal, without the need for separate processing steps.