A labor-saving tool for turning a rotor

Abstract

This utility model provides a rotor force-saving wrench assembly, including a stop sleeve, an adapter sleeve, a support plate, a pressure plate, a stud, a force-saving device, and a toothed wrench. The external spline of the stop sleeve is connected to the internal spline of the rotor's rear shaft cavity, and the other side of the stop sleeve is connected to the pressure plate via a spline. One end of the adapter sleeve is connected to the compressor casing, and the other end is connected to the support plate. The locking lug of the toothed wrench is connected to the groove on the end face of the nut, and the other side of the toothed wrench is connected to the force-saving device via a spline. The pressure plate is secured by the stud to fix the force-saving device. This utility model solves the problem of torque measurement in the process of tightening high-torque nuts and addresses the issue that changes in nut structure and size make it impossible to tighten nuts using traditional tightening fixtures.

Description

Technical Field

[0001] This utility model belongs to the field of gas turbine assembly, specifically relating to a rotor labor-saving manual assembly method. Background Technology

[0002] The rotor-type torque-saving wrench for manual assembly utilizes two interfaces, one on the left and one on the right, to connect to the nut and the other on the right, respectively. It tightens the nut by converting high torque into low torque during tightening through the gear ratio inside the torque-saving device, thus ensuring smoothness and continuity during the tightening process. It is suitable for installing various high-torque nuts and checking the tightening torque during the assembly of gas turbines and aero engines. Utility Model Content

[0003] The purpose of this utility model is to provide a manual assembly method for a rotor-saving wrench.

[0004] A rotor-type force-saving wrench assembly includes a stop sleeve, an adapter sleeve, a support plate, a pressure plate, a stud, a force-saving device, and a toothed wrench. The external spline of the stop sleeve is connected to the internal spline of the rotor's rear shaft cavity, and the other side of the stop sleeve is connected to the pressure plate via a spline. One end of the adapter sleeve is connected to the compressor casing, and the other end is connected to the support plate. The locking lug of the toothed wrench is connected to the groove on the end face of the nut, and the other side of the toothed wrench is connected to the force-saving device via a spline. The pressure plate is fastened by the stud to fix the force-saving device.

[0005] Furthermore, the toothed wrench has a size of Ф270×87mm and a net weight of 6kg.

[0006] Furthermore, the adapter sleeve has a size of Ф700×420mm and a net weight of 20kg.

[0007] Furthermore, a torque wrench is installed on the power-saving device for tightening. Through the transmission ratio of the gears inside the power-saving device, the high torque is converted into a small torque when tightening, thereby achieving the requirements of smoothness and continuity in the tightening process of the nut.

[0008] Furthermore, the tightening torque of the torque wrench is 1500 Nm.

[0009] The beneficial effects of this utility model are as follows: Compared with previous products, this utility model eliminates the usual method of tightening nuts by impact. During assembly, a force-saving device and a toothed wrench are used to tighten the nut, providing a continuous and stable tightening force, avoiding damage to the nut caused by impact tightening, and eliminating unsafe human behavior during assembly, thereby improving work efficiency and operational safety. It is simple, lightweight, and easy to operate. It solves the problem of torque measurement in the tightening process of high-torque nuts, and addresses the issue that changes in nut structure and size make it impossible to tighten nuts using traditional tightening fixtures. Attached Figure Description

[0010] Figure 1 This is a manual assembly diagram of the rotor labor-saving wrench of this utility model.

[0011] Figure 2 This is a schematic diagram of the manual assembly of the rotor-saving lever of this utility model. Detailed Implementation

[0012] The present invention will now be further described with reference to the accompanying drawings.

[0013] like Figures 1-2 As shown, a rotor-saving wrench assembly includes a stop sleeve 1, an adapter sleeve 2, a support plate 3, a pressure plate 4, a stud 5, a force-saving device 6, and a toothed wrench 7. The toothed wrench 7 is Ф270×87mm in size and weighs approximately 6kg; the adapter sleeve 2 is approximately Ф700×420mm in size and weighs approximately 20kg. The tooling is made of 45# steel. First, the external spline of the stop sleeve 1 connects to the internal spline of the rotor's rear shaft cavity. After assembling the pressure plate 4, the other side of the stop sleeve 1 is also connected to the pressure plate 4 via a spline, thus stopping the rotor during the tightening of the nut. One end of the adapter sleeve 2 is connected to the compressor casing, and the other end is connected to the support plate 3, serving as an adapter. Next, the locking lug of the toothed wrench 7 is engaged with the groove on the end face of the nut. The other side of the toothed wrench 7 is connected to the force-saving device 6 via a spline, and the pressure plate 4 is secured with the stud 5 to fix the force-saving device 6. When tightening the nut, a torque wrench is installed on the force-saving device 6 to tighten it. The tightening torque is 1500 Nm. Through the transmission ratio of the gears inside the force-saving device, the high torque is converted into a small torque during tightening, thereby achieving the requirements of smoothness and continuity in the tightening process of the nut, and completing the nut tightening process without impact.

[0014] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A rotor-saving manual assembly method, characterized in that, The device includes a stop sleeve (1), an adapter sleeve (2), a support plate (3), a pressure plate (4), a stud (5), a power saver (6), and a toothed wrench (7). The outer spline of the stop sleeve (1) is connected to the inner spline of the inner cavity of the rotor rear shaft, and the other side of the stop sleeve (1) is connected to the pressure plate (4) via a spline. One end of the adapter sleeve (2) is connected to the compressor casing, and the other end is connected to the support plate (3). The locking lug of the toothed wrench (7) is connected to the groove on the end face of the nut, and the other side of the toothed wrench (7) is connected to the power saver (6) via a spline. The pressure plate (4) is fastened by the stud (5) to fix the power saver (6).

2. The rotor labor-saving wrench manual assembly method according to claim 1, characterized in that, The toothed wrench (7) has a size of Ф270×87mm and a net weight of 6kg.

3. The rotor labor-saving wrench manual assembly according to claim 1, characterized in that, The adapter sleeve (2) has a size of Ф700×420mm and a net weight of 20kg.

4. The rotor labor-saving wrench manual assembly method according to claim 1, characterized in that, The torque wrench is installed on the power-saving device (6) for tightening. Through the transmission ratio of the gear inside the power-saving device (6), the large torque is converted into a small torque when tightening, thereby achieving the requirements of stability and continuity of the nut during the tightening process.

5. The rotor labor-saving wrench manual assembly method according to claim 1, characterized in that, The torque wrench has a tightening torque of 1500 Nm.

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