3results about How to "Press down smoothly" patented technology

The application discloses a limiting mechanism for sleigh vehicle braking and a sleigh vehicle, and comprises a braking component, which comprises a main mounting shaft, a fixing buckle fixed on the main mounting shaft and used for fixing the main mounting shaft, and single-side braking structures arranged on the two sides of the main mounting shaft respectively and controlled separately, wherein each single-side braking structure comprises an inner partition plate and an outer partition plate, and the two plates are arranged on the single side of the main mounting shaft in cooperation. Compared with the prior art, the application has the advantages that the left and right single-side braking structures are provided, the driver can control the brake switches on the two sides respectively, the proportional pressing of the single-side braking shaft structure on any side can be realized, when the sleigh vehicle deviates, the sleigh vehicle can be quickly returned to the normal state through the increased braking force on the other side, when the braking shaft structure touches the ground, the rigid impact is converted into elastic buffering through the compression of the buffering spring along the buffering shaft, the instantaneous excessive braking force is avoided to cause the sleigh vehicle to lose control or violently shake, and the compression degree of the buffering spring can be adjusted and set, so that the application is suitable for different terrains and grounds.

This invention discloses an optimized method for deception jamming of frequency-hopping radar based on a four-dimensional antenna array. This method addresses the problem of existing four-dimensional antenna arrays failing to jam against broadband radars with rapidly changing frequencies due to beam squint effects. It constructs a broadband array pattern model with the entire radar frequency hopping point set as variables and establishes a hierarchical optimization cost function. This function prioritizes suppressing the echo from the true target direction to below a safe threshold across the entire frequency band, and then maximizes the minimum gain in the direction of the false target. A differential evolution algorithm is used to globally optimize the RF switching timing parameters of each array element, obtaining a set of frequency-independent robust optimal timing sequences. Loading these timing sequences into the controller enables the four-dimensional antenna array to stably achieve deception jamming effects that conceal the true target and enhance the false target across the entire frequency hopping bandwidth of the radar without real-time adjustments. This effectively overcomes the aperture crossing effect and ensures the robustness of jamming when the enemy radar frequency changes.

This utility model discloses a spray tray cleaning device, including a base plate, multiple support columns disposed on the upper side of the base plate, a working plate disposed on the upper side of the support columns, a bracket disposed on the upper side of the working plate, a top plate disposed on the bracket, a downward driving device with a piston rod disposed on the upper side of the top plate, a connecting plate disposed on the lower end of the piston rod, a clamping sleeve disposed on the lower side of the connecting plate, a lower sleeve disposed on the upper side of the working plate for mounting the spray tray, and a water circulation assembly disposed on the upper side of the base plate. The water circulation assembly is connected to the clamping sleeve and the lower sleeve. The cleaning device of this utility model uses the downward driving device to drive the clamping sleeve to descend, which cooperates with the lower sleeve to limit the spray tray. The water circulation assembly cleans the spray tray, preventing water from splashing onto the work area, reducing pollution, improving production safety, and reducing the labor intensity of workers.