67results about How to "Strong anti-eccentric load ability" patented technology

A multi-cylinder synchronized hydraulic lifting / lowering system and method, applicable in lift systems such as a hydraulic elevator and a construction lifting / lowering platform. The system comprises a fluid replenishing circuit (1), a volumetric speed governing and energy recovery circuit (2), a manual lifting / lowering circuit (3), a synchronous locking circuit (4), a hydraulic cylinder (5), and a tilt angle sensor (6-1). The fluid replenishing circuit (1) is used for replenishing any shortage of a hydraulic fluid in a closed loop system caused by regulation of the synchronous locking circuit (4) and system leakage and reducing increases in the temperature of the hydraulic fluid. The volumetric speed governing and energy recovery circuit (2) provides the system with power, speed governing, and energy recovery. The function of the manual lifting / lowering circuit (3) is to manually lift / lower a platform when the system malfunctions. The function of the synchronous locking circuit (4) is to regulate multiple hydraulic cylinders for synchronized lifting / lowering and to lock tight the cylinders when the platform is stationary. The tilt angle sensor (6-1) detects in real-time the position and posture of the platform and feeds back to a control center, thus implementing closed loop control. The system is highly efficient and power saving and implements energy recovery and precise synchronization of multiple cylinders; the lifting / lowering platform has strong side-load resistance, operates steadily, and is high reliable.

The invention discloses a large-stroke multi-station drawing press in the field of punching machines. The large-stroke multi-station drawing press comprises a press body, a transmission shaft is arranged on the upper portion of the press body, a first gear is arranged in the middle of the transmission shaft, second gears are arranged at the two ends of the transmission shaft, two power shafts are arranged on the press body, and eccentric gears are arranged on the power shafts and engaged with the corresponding second gears. The eccentric gears are provided with connecting rods, and the lower portions of the connecting rods are connected with bulb threaded rods through threads. A sliding block body is arranged below the press body, an external support is arranged on the upper portion of the sliding block body, an oil cylinder is arranged in the external support, bulb supports are arranged in the oil cylinder, and bulbs abut against spherical face grooves. Bulb cover plates are arranged between the external support and the bulb threaded rods, an external cover plate is arranged on the outer side of the external support, an upper die plate is arranged on the lower portion of the sliding block body, a lower die plate is arranged on the lower portion of the press body, a multi-station upper die is arranged on the upper die plate, and a multi-station lower die is arranged on the lower die plate. The large-stroke multi-station drawing press adopts the eccentric gears, the stroke of the press can be increased, the eccentric gears on the two sides are stable in transmission, the span of points of force application is large, and the unbalance loading resisting capacity is high.

A multi-motor-driven, horizontally placed end face cam servo press, including an upper body, two servo motors are symmetrically installed on the upper body, the output shaft of the servo motor is equipped with a small gear, and the two small gears are connected to the large gear. Cooperate, the large gear is connected to the shaft, the shaft is connected to the upper body, the large gear is connected to the end face cam, the end face cam cooperates with the upper end of the guide plunger type push rod, and the lower end of the guide plunger type push rod is connected to the active link. The connecting rods are respectively connected with the upper connecting rod and the lower connecting rod. The lower connecting rod is connected with the push rod, the adjusting screw and the slider. The small gear is driven by the servo motor to rotate, and the small gear drives the end face cam to move through the large gear, and then drives the guide plunger type push rod to do reciprocating linear motion, and drives the slider to move through the active connecting rod, upper connecting rod, lower connecting rod and push rod After the forging is completed, the invention has high rigidity and strength, and the working characteristics of the motor are significantly improved.

A forging apparatus comprises an upper beam (2), a lower beam (18) and at least one column (1). The lower end of the column (1) is fixed on the lower beam (18), the upper beam (2) is disposed at the upper end of the column (1), a movable beam driving apparatus is disposed on the upper beam (2), and the movable beam driving apparatus is connected through a spiral mechanism to a main hydraulic cylinder (16) and a return cylinder (14) capable of cushioning. The forging apparatus may connect the spiral mechanism in the driving apparatus, the main hydraulic cylinder (16) and the return cylinder (14) together without being provided with the movable beam. The forging apparatus is characterized in that the structure is simple, and the operation is convenient and fast; the structural strength is high, the vibration is small, the anti-unbalanced loading capability is strong, the manufacturing, assembly and repair are convenient, and the cost is low.

The invention relates to a novel marine counterweight pipe coating trolley, which is mainly composed of hydraulic motors, supporting hydraulic cylinders, supporting wheels, bases, supporting seats, a control cabinet, a lifting platform, a lifting hydraulic cylinder, scissors fork arms, a chassis, wheels, a walking hydraulic motor, retractable supporting legs and weighing sensors; the supporting wheels are two pairs of supporting wheels different in spacing; the supporting wheels at a large spacing therebetween are used for supporting a large-caliber pipe, while the supporting wheels at a small spacing therebetween are used for supporting a small-caliber pipe; the supporting seats can be adjusted by certain angles by means of expansion and contraction of piston rods of the supporting hydraulic cylinders, such that an application range to pipes is widened; a pipe casting height of the lifting platform is realized by means of a hydraulic support-scissors fork machine lifting structure, which has good stability; the weighing sensors are capable of weighing cast concrete in real time during pipe coating, and the control cabinet is capable of controlling a rectilinear motion speed, a pipe rotating speed and a lifting height of the coating trolley in real time according to feedback data from the weighing sensors. The coating trolley provided by the present invention is wide in pipe application range, capable of weighing the coated concrete in real time, stable in mechanical structure, and high in automation degree.

The invention belongs to the technical field of foundation engineering, and relates to a preparation method of an end part port sealing precast concrete expanding head tubular pile. Through changing aconnecting mode of an expanding head and a concrete pipe pile, the requirement of the end part port sealing precast concrete expanding head tubular pile for improving the bearing capacity in a mechanical aspect can be met, then the sedimentation of a pile body can be reduced, and the influence of high temperature and residual stress caused by welding can be avoided; and meanwhile, an installationprocess of an end part sensor is improved, a spoke sensor is installed at a pile end of the end part port sealing precast concrete tubular pile, the pile end resistance in a pile sinking process canbe measured; and the friction resistance of a pile side can be calculated according to a pile pressing force, and the change rule of a soil layer in the pile sinking process can be deduced through thepile end resistance and the pile side friction. The preparation method of the end part port sealing precast concrete expanding head tubular pile is simple, convenient to test, simple and convenient to install, high in mechanical degree and strong in field operability, pre-splicing is not needed, and the method is suitable for on-site installation in a piling process.