5results about How to "Stop smooth" patented technology

The utility model discloses a spiral swinging hydraulic device capable of being mechanically locked at any angle, which comprises a cylinder barrel, a spiral output shaft, a front end cover, a rear end cover, a piston, a disc spring and a thrust ring, the spiral output shaft is arranged in the cylinder barrel, the two ends of the spiral output shaft penetrate through the front end cover and the rear end cover respectively, the spiral output shaft further penetrates through the piston, the thrust ring and the disc spring, the spiral output shaft is provided with a piston connecting part and a boss connecting part, and a piston protruding ring protruding outwards is arranged in the middle of the piston and is connected with the inner wall of the cylinder barrel in a sealed mode. The cylinder barrel is provided with a right-handed rotation oil inlet and a left-handed rotation oil inlet which are respectively communicated with the right-handed rotation oil inlet area and the left-handed rotation oil inlet area; the disc spring is arranged between the rear end cover and the thrust ring, and the thrust ring is movably connected with the cylinder barrel without rotation. In the using process, the gear shaft can be stably stopped at a certain position for a long time and can be effectively locked, and work is safe and reliable.

The utility model is suitable for mine machinery and electrical control technical field provides a kind of for mining bottom cleaning machine rotation's double limit structure, it include: fixed base;Rotary support, rotary support is connected between fixed base by rotary reducer;Hydraulic motor, the hydraulic motor is used to drive rotary reducer inner ring rotation;Limit pin, limit pin inserts the hole in rotary support and extends into the limit slot of fixed base;And angle sensor for detecting the rotation angle of rotary support, through electrical detection rotation angle will reach limit when reducing in advance, reduce the loss of mechanical collision, limit stop pin can effectively stop rotation, when stop pin has abrasion, can be corrected abrasion amount by turning 90 degrees;The utility model can improve control precision and operation quality, enhance system reliability and security, improve environmental adaptability and maintenance convenience, prolong equipment service life and reduce maintenance cost.

This utility model discloses a precast power wall end mold with a walking mechanism, relating to the field of precast power wall technology. It includes a mold body, a first mold support welded to the bottom of the mold body, an inclined support welded to the side of the mold body opposite to the casting side, a first roller and a second roller mounted on the first mold support, an independent roller mounted on the inclined support, and a braking device for braking the first roller. The lowest points of the wheel surfaces of the first roller and the independent roller are at the same height, used for rolling support on the top plane of the upper horizontal section of an I-beam track. The second roller is a conical wheel located below the first roller, used for rolling against the bottom inclined surface of the upper horizontal section of the I-beam track. When used as the end mold of a precast power wall casting equipment, this utility model's precast power wall end mold achieves more stable movement and excellent controllability.

The application discloses a kind of router shell continuous injection molding equipment and molding process, it is related to injection molding equipment technical field, including machine tool, fixedly connected in the top of machine tool fixed die assembly and injection system;Fixed die assembly is close to the part of four corners and is equipped with through-hole, still include: linkage rod, slidably be internally provided in through-hole;Movable die assembly is provided with two groups, and is respectively installed in the two ends of linkage rod.The application is cooperated by setting symmetrical double movable die assembly and one fixed die assembly with double cavity, and is equipped with the moving assembly of making double movable die alternate operation, and the equipment realizes the real double position continuous production, when one side position is in injection, pressure maintaining or cooling phase, the other side position can carry out opening mould, ejection demoulding and closing mould preparation etc. action in synchronization, to overlap completely in time with the auxiliary process and main molding process which originally serial, must wait, significantly reduce equipment idle waiting period, greatly improve equipment utilization and production efficiency.

This invention discloses an electro-proportional brake valve pressure control system and method. The system includes a controller and a brake valve body, the latter comprising a brushless DC motor, a mechanical transmission assembly, and a pressure component. The control method is based on a target pressure command and feedback hydraulic pressure calculation error, and employs an improved PID control algorithm to generate motor control signals. The improved algorithm mainly includes: amplifying the proportional gain in the low-pressure range to accelerate response; controlling the motor to stop through delay logic to reduce residual pressure when there is zero command and the pressure is below a threshold; and controlling the motor to reverse to disengage from mechanical jamming when motor current protection is detected and the command is zero. This invention effectively improves the dynamic response speed at low pressures, significantly reduces system residual pressure, and possesses self-recovery capability from mechanical jamming, thereby improving the control accuracy and reliability of the brake valve.