CN217276781U - A rotor test bench with central tie rod-end tooth connection with combined support - Google Patents

Abstract

The utility model provides a rotor test bench with a central tie rod-end tooth connection with a combined support, which comprises: a test bench base; Arrangement; combined supports respectively arranged on the vibration measuring brackets, the combined supports are composed of squeeze oil film dampers and rolling bearings; the first central rotating shaft and the second central rotating shaft are respectively inserted into two combined supports, the first central rotating shaft The motor is connected through the coupling; the rotor system is connected with the first central rotating shaft and the second central rotating shaft. In this application, the central rotating shaft and the sleeve are connected by a spring chuck, which has the advantages of high concentricity and easy installation and disassembly. Adjust the tightening force of the threaded section of the sleeve to measure the rotor dynamic characteristics under different preloading force.

Description

A rotor test bench with central tie rod-end tooth connection with combined support

technical field

The utility model relates to the dynamics of a rotor system, in particular to a rotor test bench with a central tie rod-end tooth connection with a combined support.

Background technique

Aero-engine is the power source of aircraft and the most important part of aircraft. It is known as the pearl of industry and reflects the comprehensive industrial capacity of a country. The vibration of the aero-engine will affect the overall performance and life, and the core mechanism that causes the vibration of the aero-engine is the rotor system. The design of the support system is an important part of the rotor system design.

As a very important connection structure of aero-engine, the circular arc end tooth connection structure has great engineering value to study its influence on the dynamic characteristics of the rotor system. Generally, it is expensive and risky to directly use the prototype rotor of aero-engine to conduct experimental research, so the dynamic similar simulation test bench is often used for research. However, the structure of aero-engine is very complex, and the design of its dynamic similarity test model has always been a big problem.

Utility model content

The utility model provides a rotor test bench with a central tie rod-end tooth connection with combined support, the purpose of which is to solve the problems in the prior art.

In order to achieve the above purpose, an embodiment of the present utility model provides a rotor test bench with a central tie rod-end tooth connection with combined support, including:

bench base;

Two vibration measuring supports are arranged on the base of the test bench, and the two vibration measuring supports are arranged at intervals;

The combined supports are respectively arranged on the vibration measuring brackets, and the combined supports are composed of a squeeze oil film damper and a rolling bearing;

The first central rotating shaft and the second central rotating shaft are respectively inserted into two combined supports, and the first central rotating shaft is connected with a motor through a coupling;

The rotor system is connected with the first central rotating shaft and the second central rotating shaft.

Preferably, the rotor system includes a sleeve, a wheel disc on the sleeve, and a threaded pair on the sleeve. One end of the sleeve is positioned by a shoulder, and the other end is fastened by a threaded pair, and the wheel disc is fixed on the sleeve. on and between the shoulder and the threaded pair.

Preferably, a spring clip is used for clamping and connection between the sleeve and the first central shaft and the second central shaft.

Preferably, the rotor system has two end tooth connection structures, which are respectively located between AB and BC.

The above-mentioned scheme of the present utility model has the following beneficial effects:

In this application, the dynamic characteristics of the rotor parts under different preloading forces can be measured according to the experimental requirements. The central rotating shaft and the sleeve are connected by a spring chuck, which has the advantages of high concentricity and easy installation and disassembly.

Description of drawings

Fig. 1 is the structural representation of the present utility model;

FIG. 2 is a schematic diagram of the connection between the rotor system, the first central rotating shaft and the second central rotating shaft.

1-Test bench base, 2-Vibration measuring bracket, 3-Combined support, 4-First central axis, 5-Second central axis, 6-Rotor system, 61-Sleeve, 62-Shoulder, 63-Wheel Disc, 64-threaded pair fastening, 7-spring collet, 8-motor.

Detailed ways

In order to make the technical problems, technical solutions and advantages to be solved by the present invention more clear, the following will be described in detail with reference to the accompanying drawings and specific embodiments.

Aiming at the existing problems, the utility model provides a rotor test bench with a central tie rod-end tooth connection with combined support.

As shown in Figures 1 and 2, an embodiment of the present utility model provides a rotor test bench with a central tie rod-end tooth connection with combined support, comprising: a test bench base 1; two vibration measuring brackets 2, arranged on On the base 1 of the test bench, and two vibration measuring supports 2 are arranged at intervals; the combined supports 3 are respectively arranged on the vibration measuring supports 2, and the combined supports 3 are composed of squeeze oil film dampers and rolling bearings; the first central rotating shaft 4 and the second central rotating shaft 5 are inserted into two combined supports 3 respectively. The first central rotating shaft 4 is connected with a motor 8 through a coupling; the rotor system 6 is connected with the first central rotating shaft 4 and the second central rotating shaft 5 .

The rotor system 6 includes a sleeve 61 and a wheel disc 63 arranged on the sleeve 61. The sleeve 61 is divided into two parts: a threaded pair and a sleeve shaft section. One end of the sleeve 61 protrudes to form a shoulder 62 for positioning. A screw pair fastening 64 is formed at one end to cooperate with the screw pair, the wheel disc 63 is arranged between the shaft shoulder 62 and the screw pair fastening 64 , and the wheel disc 63 is fixed on the sleeve 61 . Preferably, the thread pair is spaced from the shaft shoulder 62 at a certain distance for installing the wheel disc 63 .

The wheel discs 63 are matched with end teeth. In this application, three wheel discs 63 are tested, and the end teeth are located between 63-A and 63-B, 63-B and 63-C.

The rotor system 6 uses a central tie rod-threaded connection to assemble a plurality of wheel discs 63 with end teeth. By adjusting the tightening force of the threaded pair of the sleeve 61, the combined rotor test pieces of the end-containing gear plate 63 under different pre-tightening forces can be obtained.

The collet 7 is connected to the sleeve 62 of the rotor system 6 , the first central shaft 4 and the second central shaft 5 .

A central tie rod-end tooth connection rotor test bench with combined support also has an information collection module and an information operation module (not shown in the figure), the information collection module is signally connected with the information operation module, and the information The collection module is signal-connected with an acceleration sensor and a force sensor, the force sensor is installed on the first central shaft 4 and/or the second central shaft 5 , and the acceleration sensor is installed on the rotor system 6 .

In this application, the end-tooth connection is used to explore the dynamic characteristics of the rotor with end-tooth structure, and the squeeze oil film damper is added to effectively reduce vibration. If necessary, adjust and replace the combined support 3. The dynamic characteristics of the rotor system 6 under different thread tightening pre-tightening forces can be measured according to experimental requirements. The two central rotating shafts and the sleeve 61 are connected by a spring clip 7, which has the advantages of high concentricity and easy installation and disassembly.

The above are the preferred embodiments of the present invention. It should be pointed out that for those skilled in the art, without departing from the principles of the present invention, several improvements and modifications can be made. These improvements and Retouching should also be regarded as the protection scope of the present invention.

Claims (4)

1. a rotor test bench that contains the center tie rod-end tooth connection of combined support, is characterized in that, comprises: bench base (1); Two vibration measuring supports (2) are arranged on the base (1) of the test bench, and the two vibration measuring supports (2) are arranged at intervals; combined supports (3) respectively arranged on the vibration measuring brackets (2), the combined supports (3) are composed of a squeeze oil film damper and a rolling bearing; The first central rotary shaft (4) and the second central rotary shaft (5) are respectively inserted into two combined supports (3), and the first central rotary shaft (4) is connected with a motor (8) through a coupling; The rotor system (6) is connected with the first central rotating shaft (4) and the second central rotating shaft (5). 2. The rotor test bench with central tie rod-end tooth connection with combined support according to claim 1, characterized in that: the rotor system (6) comprises a sleeve (61) and a wheel on the sleeve (61) The threaded pair on the disc (63) and the sleeve (61), one end of the sleeve (61) is positioned by the shaft shoulder (62), and the other end is fastened with a threaded pair (64), then the wheel disc (63) is fixed on the on the sleeve (61) and between the shaft shoulder (62) and the threaded pair fastening (64). 3. The center tie rod-end tooth connection rotor test bench according to claim 2, characterized in that: the sleeve (61) is connected to the first central axis (4) and the second central axis (5). ) using a spring clamp (7) to clamp the connection. 4. The rotor test bench with central tie rod-end tooth connection with combined support according to claim 2, characterized in that: the rotor system (6) has two end tooth connection structures, which are located at 63-A and 63 respectively. - Between B, 63-B and 63-C.

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