4 results about "Torque multiplier" patented technology

The application provides an adjustable torque multiplier checking device and relates to the technical field of torque multiplier checking. The bottom support is provided with linear guide rails on both sides, a moving frame is slidably installed on the upper side of the linear guide rails through a sliding seat, an installation plate is fixedly installed on the lower side of the bottom support, a multiplier fixing plate is fixedly installed on the upper side of the bottom support, a large-range torque sensor is fixedly installed on the upper surface of the installation plate, a small-range torque sensor is fixedly installed on the inner upper end of the moving frame, and a first adapter is installed on the input end of the large-range torque sensor and the small-range torque sensor. The second adapter is internally provided with a movable shaft which can move up and down, and the foot-operated operation of the control assembly can realize the quick automatic connection and disconnection with the input end of the torque multiplier, significantly reduces the installation process and checking preparation time, simplifies the disassembly and replacement process, and improves the checking preparation efficiency.

The application discloses a large-torque nut dismounting and tightening device, which comprises a base, a supporting and clamping assembly, a supporting rod assembly, a first chuck assembly and a force applying and driving assembly. The supporting and clamping assembly is used for clamping a locking nut arranged on a second end long shaft from two opposite sides of the second end long shaft. The first chuck assembly is used for clamping a locking nut arranged on an outer circle of a first end long shaft. The first chuck assembly has lever shafts extending into cantilever arms along opposite sides of the first end long shaft. The force applying and driving assembly is vertically arranged on the base and has upper ends connected to outer side ends of the lever shafts, so that the first chuck assembly can be clamped and rotated by a set angle under the action of a downward pressure to be dismounted or tightened. The device is particularly suitable for a test bench without space for using a torque multiplier. The device can avoid damaging fasteners and equipment by drilling and cutting on site, and greatly improves the dismounting efficiency.

One embodiment of the present application provides a rotor shaft locking nut dismounting device and method. The axial locking force of the locking nut is "unloaded" or "loaded" by a hollow hydraulic cylinder and each force transmission part, and the wrench torque is amplified by a large gear and a small gear and a torque multiplier, so that the dismounting and mounting of the heavy load locking nut of the helicopter rotor shaft are solved, the heavy load locking nut is not damaged and can be reused, and the helicopter rotor shaft disassembly and assembly are ensured and facilitated.

This invention discloses a tightening device and method for spline nuts on aero-engines, belonging to the field of aero-engine assembly technology. The device includes a movable support unit, a locking mechanism, a multi-directional adjustment mechanism, and a tightening gun assembly. The multi-directional adjustment mechanism includes a Z-axis adjustment mechanism, a Y-axis adjustment mechanism, and an X-axis adjustment mechanism, stacked sequentially, used to adjust the position of the tightening gun assembly in the Z, Y, and X directions, respectively. The tightening gun assembly includes an electric tightening gun, a torque multiplier, and a spline sleeve connected in sequence. The spline sleeve has an external spline at its end for engaging with the internal spline interface of the spline nut to be tightened. The method includes locking, alignment, engagement, and tightening / loosening steps. This invention ensures operational stability through the locking mechanism and achieves precise alignment between the spline sleeve and the nut through the multi-directional adjustment mechanism, effectively improving the efficiency, accuracy, and safety of tightening and disassembling spline nuts on aero-engines.