4 results about "Force balance" patented technology

The invention provides a small-sized turbojet engine thrust vectoring nozzle testing platform and solves the problem that a common small-sized turbojet engine testing platform cannot test the force and torque features of an engine thrust vectoring nozzle. The small-sized turbojet engine thrust vectoring nozzle testing platform comprises a fixed support, a six-component force balance, a support seat, a clamping and fixing component and the thrust vectoring nozzle and is characterized in that the fixed support is fixedly arranged on the ground, the six-component force balance is arranged on thesupport panel of the fixed support, the support seat is arranged above the six-component force balance, the clamping and fixing component is coordinated with the support seat to clamp and fix a turbojet engine, the thrust vectoring nozzle is arranged along the axial direction of the turbojet engine, the thrust vectoring nozzle is detachably connected with the clamping and fixing component througha connecting rod, and a support column is connected between the support seat and the six-component force balance. By the structure, the small-sized turbojet engine thrust vectoring nozzle testing platform can test the inherent thrust features of the turbojet engine and the force and torque features of the thrust vectoring nozzle under different rotation angles.

The invention relates to an anti-collision device for a bridge with an arched bridge opening. The anti-collision device includes abutments or bases arranged in a front area and a back area of a bridge pier or an abutment, and anti-collision navigation frames are arranged on bearing platforms of the abutments or bases. Each navigation frame includes a streamline or beveled navigation head, a navigation framework on the channel side and penetrating the bridge opening, and a buffer device, wherein the navigation frame can be placed on a linear moving mechanism which is disposed on each bearing platform, and the buffer device is arranged on the bearing platforms and is used for force balancing or delivering. The navigation frames can be provided with weight balancing devices, auxiliary supports and high limit anti-collision frames, and roller wheel devices for navigation energy dissipation are arranged on the sides of the navigation frames. The anti-collision device has the advantages that when ships yaw and collide the navigation frames, the course can be corrected under navigation of the streamline navigation heads; when the ships exceed the high limit and collide the high limit anti-collision frames, the navigation frames will be driven to drive the linear moving mechanism and make the buffer device to act, the ships consume ship collision energy, then the ship reduce speed and anchor, and thus the bridge frame can be protected.

A hinge base (9), a mechanical limiting piece (6) and a single-module electromagnetic force balance sensor (11) of the novel flexible static balancing instrument are installed on a vibration isolation table (12). The variable cross-section crossed reed flexible hinge (8) is mounted on the hinge base (9), and the bearing end of the variable cross-section crossed reed flexible hinge (8) is fixed with the cross beam (3); and a distance sensor (4), a gradienter (5) and a leveling weight (7) are mounted on the cross beam (3). According to the static balancing instrument, a moment balancing method is adopted to measure unbalanced moment, and a novel variable cross-section crossed reed flexible hinge (8) is adopted as a rotating supporting unit. According to the flexible static balancing instrument, the bearing performance of the static balancing instrument is greatly improved while the rotating supporting precision of a traditional flexible static balancing instrument is kept.

The invention discloses a single torsion rod turnover mechanism and an automobile. The single torsion rod turnover mechanism comprises a first turnover supporting seat, a second turnover supporting seat, a shaft tube which is rotatably arranged on the first turnover supporting seat and the second turnover supporting seat, a first cab supporting seat fixed on the shaft tube, a second cab supportingseat fixed on the shaft tube, and a torsion rod spring penetrating through the shaft tube, wherein the first end of the torsion rod spring is in transmission connection with the shaft tube, and the second end of the torsion rod spring is a pre-torque applying end; the first end of the torsion rod spring, the first cab supporting seat, the second cab supporting seat and the second end of the torsion rod spring are sequentially distributed in the axial direction of the shaft tube; and the distance from the cab fixed point of the first cab supporting seat to the axis of the shaft tube is shorterthan that from the cab fixed point of the second cab supporting seat to the axis of the shaft tube. According to the adoption of the single torsion rod turnover mechanism, difference between force applied to the cab fixed point of the first cab supporting seat and the force applied to the cab fixed point of the second cab supporting seat is reduced, so that the force balance of the cab is improved, and the tilting degree of the cab is reduced.