CN217384557U

CN217384557U - Universal turbine dynamic balance test fixture

Info

Publication number: CN217384557U
Application number: CN202220677480.5U
Authority: CN
Inventors: 刘浩康; 刘成峰; 王波
Original assignee: AVIC Jincheng Nanjing Engineering Institute of Aircraft Systems
Current assignee: AVIC Jincheng Nanjing Engineering Institute of Aircraft Systems
Priority date: 2022-03-25
Filing date: 2022-03-25
Publication date: 2022-09-06
Anticipated expiration: 2032-03-25

Abstract

The utility model belongs to the field of aviation two-power systems, and discloses a universal turbine dynamic balance test fixture, which is used for fixing a turbine assembly during dynamic balance test and comprises a right bracket, a base body, a right bracket cover and a left bracket; the left end of the base body is fixed on the test bed through a left support, the right end of the base body is fixed on the test bed through a right support, a right bracket is arranged on the left side of the right support of the base body, a right frame cover with one end hinged with the right bracket is arranged on the right bracket, and the right bracket and the right frame cover are used for clamping a turbine shaft of the test turbine; a space for the turbine to perform dynamic balance test is arranged between the right bracket and the left bracket of the base body. This anchor clamps simple structure, the assembly is simple and easy, and the replaceability is strong, and the dismouting step is simple, and easily operation only needs open-ended spanner to realize dismantling the function in the experimentation, and whole experiment also only needs a testing personnel can be accomplished.

Description

Universal turbine dynamic balance test fixture

Technical Field

The utility model belongs to aviation two driving systems field relates to a turbine test fixture, concretely relates to general turbine dynamic balance test fixture.

Background

Turbine assemblies are used in a plurality of products in the aviation secondary power field, and dynamic balance tests are required to be carried out on the turbine assemblies after new turbines are produced and manufactured, so that unbalance is controlled within an allowable tolerance range. However, the turbines in the products are different in size, the test process is extremely complicated, and a convenient and universal test fixture is urgently needed to meet the test requirement.

SUMMERY OF THE UTILITY MODEL

The purpose of the utility model is that: in order to improve the dynamic balance test efficiency of the turbine and improve the dynamic balance test precision, a universal turbine dynamic balance test fixture is designed and used for fixing a turbine assembly during the dynamic balance test.

The technical scheme of the utility model:

a universal turbine dynamic balance test fixture is used for fixing a turbine assembly during dynamic balance test and comprises a right support, a base body, a right bracket cover and a left support; the left end of the base body is fixed on the test bed through a left support, the right end of the base body is fixed on the test bed through a right support, a right bracket is arranged on the left side of the right support of the base body, a right frame cover with one end hinged with the right bracket is arranged on the right bracket, and the right bracket and the right frame cover are used for clamping a turbine shaft of the test turbine; a space for the turbine to perform dynamic balance test is arranged between the right bracket and the left bracket of the base body.

Furthermore, the left support is connected with the base body through a positioning block. The positioning block is used for positioning the position between the whole test fixture and the test bed.

Further, the right bracket is connected with the base body through a filler block. The pads are used to control the height of the turbine shaft and thus the height of the turbine disc.

Furthermore, the non-hinged ends of the right bracket and the right frame cover are provided with transverse positioning holes, the transverse positioning holes are positioned through right bracket pins, and then the non-hinged ends of the right bracket and the right frame cover are connected through longitudinal bolts and nuts.

Furthermore, a transverse positioning hole is formed between the right support and the base body, the positioning hole is positioned through a right support pin, and then the right support is connected with the base body through a right support screw.

Furthermore, the base body is of a structure with a U-shaped cross section. When a tested piece is installed in the clamp, the installation direction of the turbine shaft is rightward, so that the turbine disc is longitudinally assembled between the left bracket and the right bracket and is not influenced when rotating.

The utility model has the advantages that:

1. the utility model relates to a general turbine dynamic balance experiment anchor clamps, simple structure, the assembly is simple and easy, and the replaceability is strong, and the dismouting step is simple, easily operates, only needs the open-ended spanner to realize dismantling the function in the testing process, and whole experiment also only needs a tester to accomplish.

2. When the turbine is not suitable, the right bracket with the proper specification can be simply replaced, or a round filling supporting block is arranged on the right bracket, so that the problem of universality can be solved, and the turbine is used for the device.

3. The utility model discloses the overwhelming majority turbine in two driving system fields of aircraft all can use, has certain commonality and better use value.

Drawings

FIG. 1 is a front view of a universal dynamic turbine balance test fixture of the present invention;

fig. 2 is a top view of a universal turbine dynamic balance test fixture according to the present invention;

FIG. 3 is a right side view of a universal turbine dynamic balance test fixture of the present invention;

wherein: 1-right bracket screw, 2-right bracket, 3-basal body, 4-right bracket pin, 5-filler block, 6-right bracket, 7-right bracket cover, 8-left bracket, 9-left bracket cover, 10-positioning block, 11-left bracket, 12-bolt nut, 13-right bracket pin, 14-fixing screw and 15-left bracket pin.

Detailed Description

This section is an embodiment of the present invention for explaining and explaining the technical solution of the present invention.

A universal turbine dynamic balance test fixture is used for fixing a turbine assembly during dynamic balance test and comprises a right support 2, a base body 3, a right bracket 6, a right bracket cover 7 and a left support 11; the left end of the base body 3 is fixed on a test bed through a left support 11, the right end of the base body 3 is fixed on the test bed through a right support 2, a right bracket 6 is arranged on the left side of the right support 2 of the base body 3, a right frame cover 7 with one end hinged with the right bracket 6 is arranged on the right bracket 6, and the right bracket 6 and the right frame cover 7 are used for clamping a turbine shaft of a test turbine; and a space for the turbine to perform dynamic balance test is arranged between the right bracket 6 and the left bracket 11 of the base body 3.

The left bracket 11 is connected with the base body 3 through a positioning block 10. The positioning block 10 is used for positioning the whole test fixture and the test bench.

The right bracket 6 is connected with the base body 3 through a pad 5. The pads 5 are used to control the height of the turbine shaft and thus the height of the turbine disc.

The non-hinged ends of the right bracket 6 and the right frame cover 7 are provided with transverse positioning holes which are positioned through a right bracket pin 13, and then the non-hinged ends of the right bracket 6 and the right frame cover 7 are connected through a longitudinal bolt and nut 12.

A transverse positioning hole is formed between the right support 2 and the base body 3, the positioning hole is positioned through a right support pin 4, and then the right support 2 is connected with the base body 3 through a right support screw 1.

The basal body 3 is of a structure with a U-shaped cross section. When a tested piece is installed in the clamp, the installation direction of the turbine shaft is rightward, so that the turbine disc is longitudinally assembled between the left bracket and the right bracket and is not influenced when rotating.

The present invention will be described in further detail with reference to the following embodiments.

A universal turbine dynamic balance test fixture is used for fixing a turbine assembly during dynamic balance test. The mechanism comprises a right support screw 1, a right support 2, a base body 3, a right support pin 4, a filler block 5, a right bracket 6, a right bracket cover 7, a left bracket 8, a left bracket cover 9, a positioning block 10, a left support 11, a bolt nut 12, a right bracket pin 13, a fixing screw 14, a left bracket pin 15, a pin 16 and a nut 17.

During assembly, the right bracket pin 4 plays a role in positioning, the right bracket 2 of the left bracket 11 is firstly positioned and connected with the base body 3, and the right bracket screw 1 plays a role in connection and fixation, so that the right bracket 2 of the left bracket 11 is connected and fixed with the base body 3; a lining block 5 and a positioning block 10 are arranged and respectively connected with the substrate 3, the right bracket 6, the left bracket 11 and the left bracket 8 to play roles of positioning and size adjustment; the left bracket pin 15 and the pin 16 play a positioning role, the left bracket 8 and the right bracket 6 are respectively connected with the base body 3 in a positioning way, the fixing screw 14 plays a connecting and fixing role again, and the left bracket 8 and the right bracket 6 are connected and fixed with the base body 3; the right frame cover 7 is connected with one side of the right bracket 6 through a hinge, the other side of the right frame cover can be opened and closed for 180 degrees around the hinge, the right frame cover is closed after a tested piece is placed in the right frame cover, and the right frame cover 7 and the right bracket 6 are locked through a bolt nut 12 and a right bracket pin 13.

The whole fixture is of a U-shaped structure, and when a tested piece is loaded into the fixture, the mounting direction of the turbine shaft is rightward, so that the turbine disc is longitudinally assembled between the left bracket and the right bracket and is not affected during rotation.

When the test bed is used, the size of the test bed support is adjusted, the left support 11 and the right support 2 are fixed on the test bed through adaptive screws, the nut 17 is unscrewed, the right frame cover 7 is turned, the turbine shaft of the tested turbine is placed rightwards on the right bracket 6, the right frame cover 7 is turned upwards, and the nut 17 is screwed down to fix the turbine shaft. After the installation is completed, the turbine disk should be longitudinally assembled between the left and right brackets. The turbine shaft is checked to be fixed, and the turbine is not affected in normal rotation.

After the test is finished, after the nut 17 is unscrewed, the tested piece is held on one hand, the nut 17 is completely unscrewed, the right frame cover 7 is opened, the tested piece is gently taken down, and after the adaptive nut fixed with the rack is loosened, the whole clamp is taken down from the test bed for storage.

Claims

1. A universal turbine dynamic balance test fixture is characterized in that a turbine assembly is fixed during dynamic balance test, and the fixture comprises a right support (2), a base body (3), a right bracket (6), a right frame cover (7) and a left support (11); the left end of the base body (3) is fixed on the test bed through a left support (11), the right end of the base body (3) is fixed on the test bed through a right support (2), a right bracket (6) is arranged on the left side of the right support (2) of the base body (3), a right bracket cover (7) with one end hinged with the right bracket (6) is arranged on the right bracket (6), and the right bracket (6) and the right bracket cover (7) are used for clamping a turbine shaft of the test turbine; a space for the turbine to perform dynamic balance test is arranged between the right bracket (6) and the left bracket (11) of the base body (3).

2. The universal turbine dynamic balance test fixture as claimed in claim 1, wherein the left support (11) is connected with the base body (3) through the positioning block (10).

3. The universal dynamic turbine balance test fixture of claim 1, wherein the right bracket (6) is connected with the base body (3) through the pad (5).

4. A universal turbine dynamic balance test fixture as claimed in claim 1, characterized in that the non-hinged ends of the right bracket (6) and the right frame cover (7) are provided with transverse positioning holes, which are positioned by right bracket pins (13), and then the non-hinged ends of the right bracket (6) and the right frame cover (7) are connected by longitudinal bolt and nut (12).

5. The universal turbine dynamic balance test fixture as claimed in claim 1, wherein a transverse positioning hole is formed between the right support (2) and the base body (3), the positioning hole is positioned through a right support pin (4), and then the right support (2) and the base body (3) are connected through a right support screw (1).

6. The universal turbine dynamic balance test fixture as claimed in claim 1, wherein the base body (3) is of a U-shaped cross section structure.