Connecting structure of IGV actuating mechanism driving ring

Abstract

The invention provides an IGV actuating mechanism driving ring connecting structure which comprises a first driving semi-ring and a second driving semi-ring, a first bent T-shaped groove is formed in one side of the ring surface of one end of the first driving semi-ring, and a first side lug type bolt is arranged on the other side of the ring surface of one end of the first driving semi-ring to be connected with a first bent T-shaped beam formed by the fact that the other end of the first driving semi-ring extends outwards in the ring direction; a second side lug type bolt connecting structure is arranged on one side surface close to the extension starting part; a second bent T-shaped groove is formed in one side of the ring face of one end of the second driving half ring, a third side lug type bolt connecting structure is arranged on the other side of the ring face of one end of the second driving half ring, the other end of the second driving half ring extends outwards in the ring direction to form a second bent T-shaped beam, and a fourth side lug type bolt connecting structure is arranged on the side face close to the extension starting position; according to the connecting structure of the IGV executing mechanism driving ring, each blade is directly connected with the driving ring, and the force borne by the connecting structure of each blade is consistent.

Description

Technical Field

[0001] The invention belongs to the field of an aero-engine compressor inlet adjustable guide vane (IGV: Inlet Guide Vanes) actuator, in particular to a connection structure of a driving ring of an IGV actuator. Background Art

[0002] As an abnormal working state of aircraft engines, surge will not only cause the power of the engine to drop, but also cause damage to the engine structure, and even endanger the safe operation of the whole machine. The compressor uses imported adjustable guide vanes and adjusts the intake angle of the blades according to different working conditions, which can effectively improve the efficiency of the compressor, expand the stable working range of the compressor, and prevent compressor surge. Therefore, accurate regulation of the blades is particularly important. In the IGV actuator, the drive ring plays a joint adjustment role for each blade, so that the rotation angle of each blade is consistent. In order to facilitate the processing and installation of the drive ring, the drive ring is mostly composed of upper and lower half rings, but if the connection method of the drive ring adopts an external ear connection, it will result in not all blades being directly connected to the drive ring. The external ear structure leads to an indirect connection between the blade and the drive ring. The two blades are connected to the drive ring by only one screw. The force of the screw is twice that of connecting a single blade, which will reduce the reliability and service life of the connection structure. In addition, the two blades are in a master-slave relationship, and there will be differences in the rotation angle, thereby reducing the uniformity of the blade rotation angle. Summary of the invention

[0003] In order to solve the above technical problems, the present invention provides a connection structure of an IGV actuator drive ring, which adopts the following technical solutions: A connection structure of an IGV actuator drive ring comprises a first drive half ring and a second drive half ring, wherein a first curved T-shaped groove is provided on one side of one end of the first drive half ring, and a first side ear bolt connection structure is provided on the other side, the other end of the first drive half ring extends outwardly along the ring direction to form a first curved T-shaped beam, and a second side ear bolt connection structure is provided on a side surface close to the beginning of the extension; a second curved T-shaped groove is provided on one side of one end of the second drive half ring, and a third side ear bolt connection structure is provided on the other side, the other end of the second drive half ring extends outwardly along the ring direction to form a second curved T-shaped beam, and a fourth side ear bolt connection structure is provided on a side surface close to the beginning of the extension; the first curved T-shaped groove is installed in cooperation with the second curved T-shaped beam to fixedly connect the first side ear bolt connection structure and the fourth side ear bolt connection structure; the second curved T-shaped groove is installed in cooperation with the first curved T-shaped beam to fixedly connect the second side ear bolt connection structure and the third side ear bolt connection structure, so that the first drive half ring and the second drive half ring form a complete drive ring.

[0004] Furthermore, in order to ensure the stability and firmness of the connection between the first driving half ring and the second driving half ring, a first bolt hole is provided in the first curved T-slot, and a corresponding second bolt hole is provided on the second curved T-beam, and the two are connected by a bolt; a third bolt hole is provided in the second curved T-slot, and a corresponding fourth bolt hole is provided on the first curved T-beam, and the two are connected by a bolt.

[0005] Compared with the prior art, the present invention has the following beneficial effects: The connection structure of the drive ring of an IGV actuator provided by the present invention enables each blade to be directly connected to the drive ring, the force exerted on the connection structure of each blade is consistent, and the rotation of the blades is also uniformly coordinated, thereby improving the uniformity of air intake; in addition, the drive ring connection adopts a T-beam, which makes the upper and lower drive rings more compact and improves the transmission efficiency of the drive ring. BRIEF DESCRIPTION OF THE DRAWINGS

[0006] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0007] Figure 1 This is a three-dimensional diagram of the blade assembly of the drive ring of the present invention using a T-beam connection structure; Figure 2 This is a partial enlarged view of the connection between the drive ring and the blades of the present invention; Figure 3 A three-dimensional diagram of a curved T-slot end in the drive ring connection structure of the present invention; Figure 4 A three-dimensional diagram of a bent T-beam end in the drive ring connection structure of the present invention; Figure 5 It is an assembly diagram of the curved T-shaped beam and the T-shaped groove of the present invention; Figure 6 It is an assembly diagram of the side ear type bolt connection structure of the present invention; Figure 7 This is an exploded view of the drive ring connection structure of the present invention.

[0008] In the accompanying drawings, the components represented by the reference numerals are listed as follows: 1-intake cylinder, 2-roller, 3-first drive half ring, 4-second curved T-shaped beam, 5-blade connecting rod, 6-drive ring connecting rod, 7-screw, 8-screw hole, 9-second drive half ring, 10-blade, 11-first side ear bolt connection structure, 12-first curved T-shaped slot, 13-first bolt hole, 14-second bolt hole, 15-fourth side ear bolt connection structure, 16-second curved T-shaped slot, 17-third side ear bolt connection structure, 18-first curved T-shaped beam, 19-second side ear bolt connection structure, 20-third bolt hole, 21-fourth bolt hole. DETAILED DESCRIPTION

[0009] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0010] like Figure 1 and Figure 2 As shown, the IGV drive ring is composed of a first drive half ring 3 and a second drive half ring 9, and cooperates with the roller 2 on the intake cylinder 1 to make a circular motion. However, the traditional drive ring arranges the first side ear bolt connection structure 11 and the second side ear bolt connection structure 15 on the same side of the drive ring, resulting in insufficient space for arranging the screw holes 8 on the drive ring, and there is an indirect connection between the blades and the drive ring, which affects the intake efficiency. Therefore, in this embodiment, the side ear bolt connection structure on the drive ring is arranged on the side of the drive ring, thereby adding two screw holes 8 for connecting the blades 10. The drive ring is connected to the drive ring connecting rod 6 by screws 7, and the drive ring connecting rod 6 and the blade connecting rod 5 are also connected by screws 7, so as to achieve the regulation of the blades 10. The following structure is adopted in a specific embodiment of an IGV drive ring connection structure of the present invention.

[0011] like Figure 3-6As shown, a connection structure of an IGV actuator drive ring mainly includes a first drive half ring 3 and a second drive half ring 9, wherein a first curved T-shaped groove 12 is provided on a surface of one end of the first drive half ring 3 that is parallel to the installation of a blade 10, and a first side ear bolt connection structure 11 is provided on the other surface opposite to the blade 10; a first curved T-shaped beam 18 is provided on the other surface of the first drive half ring 3 that is parallel to the installation of the blade 10, and a second side ear bolt connection structure 19 is provided on the other surface opposite to the blade 10; a second curved T-shaped groove 16 is provided on the surface of one end of the second drive half ring 9 that is parallel to the installation of the blade 10, and a third side ear bolt connection structure 17 is provided on the other surface opposite to the blade 10; the other end of the second drive half ring 9 A second curved T-shaped beam 4 is provided on the side parallel to the installation of the blade 10, and a fourth side ear bolt connection structure 15 is provided on the other side opposite to it. Interference fit is adopted between the first curved T-shaped slot 12 and the second curved T-shaped beam 4, and between the second curved T-shaped slot 16 and the first curved T-shaped beam 18. A first bolt hole 13 and a second bolt hole 14 are respectively provided at the ends of the first curved T-shaped slot 12 and the second curved T-shaped beam 4, and the fixation is strengthened by the first bolt connection, and a single-head bolt connection is adopted, and a nut is installed on one side of the second curved T-shaped beam 4 to prevent interference with the first side ear bolt connection structure 11; the end 4 of the second curved T-shaped beam is one screw hole away from the screw hole 8 for connecting the blade. Similarly, the second curved T-slot 16 and the end of the first curved T-beam 18 are respectively provided with a third bolt hole 20 and a fourth bolt hole 21, which are connected by a first bolt for reinforcement and fixation, and a single-head bolt connection is adopted. The nut is installed on one side of the first curved T-beam 18 to prevent interference with the third side ear bolt connection structure 17; the end of the first curved T-beam 18 is one screw hole away from the screw hole 8 of the connecting blade.

[0012] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0013] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A connection structure of an IGV actuator drive ring, characterized in that: It includes a first driving half ring and a second driving half ring, a first curved T-shaped groove is provided on one side of one end of the first driving half ring, and a first side ear bolt connection structure is provided on the other side, the other end of the first driving half ring extends outward along the ring direction to form a first curved T-shaped beam, and a second side ear bolt connection structure is provided on one side near the beginning of the extension; a second curved T-shaped groove is provided on one side of one end of the second driving half ring, and a third side ear bolt connection structure is provided on the other side, the other end of the second driving half ring extends outward along the ring direction to form a second curved T-shaped beam, and a fourth side ear bolt connection structure is provided on one side near the beginning of the extension; the first curved T-shaped groove is installed in cooperation with the second curved T-shaped beam to fix the first side ear bolt connection structure and the fourth side ear bolt connection structure; the second curved T-shaped groove is installed in cooperation with the first curved T-shaped beam to fix the second side ear bolt connection structure and the third side ear bolt connection structure, so that the first driving half ring and the second driving half ring form a complete driving ring.

2. The connection structure of the IGV actuator drive ring according to claim 1, characterized in that: A first bolt hole is provided in the first curved T-slot, and a corresponding second bolt hole is provided on the second curved T-beam, and the two are connected by a first bolt; a third bolt hole is provided in the second curved T-slot, and a corresponding fourth bolt hole is provided on the first curved T-beam, and the two are connected by a second bolt.

Images