Device for accurately adjusting height of large-size positioning ring

Abstract

The invention discloses a large-size positioning ring height accurate adjusting device and belongs to the technical field of engine assembly. A lifting assembly is installed on the base and used for adjusting the height of the stator unit body, an electric push rod is connected between the lifting assembly and the base, and the lifting assembly is driven by the electric push rod to ascend and descend. The lifting assembly comprises an outer positioning ring, a transmission ring and a plurality of bull eye wheels; the transmission ring is rotationally installed on the base, the outer positioning ring is arranged above the transmission ring, the lower end face of the outer positioning ring is provided with a plurality of sectional type rotary lifting faces, the multiple bull eye wheels are arranged between the transmission ring and the outer positioning ring, the positions of the bull eye wheels correspond to the positions of the rotary lifting faces on the outer positioning ring, and the electric push rod pushes the transmission ring to rotate. The precision, stability and smoothness of the whole system are guaranteed, the structure is light, operation is easy, the development cost is low, and a technical guarantee is provided for the assembly process of the rotor and stator unit bodies. According to the invention, stable, accurate and free switching of the lifting positioning ring between given required heights is realized through electric control.

Description

Technical Field

[0001] This invention belongs to the field of engine assembly technology, specifically relating to a device for precise height adjustment of a large-size positioning ring. Background Technology

[0002] In the assembly process of the low-pressure turbine stator unit, the height of the stator unit needs to be precisely adjusted when assembling the blades, and it can be freely and accurately switched between several given heights. The stator unit is large in size and weight, and its raising and lowering requires overcoming a great deal of gravity and friction, requiring simultaneous application of force at multiple points. Existing process equipment is difficult to guarantee the smoothness, stability and accuracy of the height raising and lowering process. Summary of the Invention

[0003] To address the aforementioned problems, this invention provides a device for precisely adjusting the height of a large-size positioning ring, enabling smooth and precise switching between given required heights for an electrically controlled, liftable large-size positioning ring.

[0004] The technical solution adopted in this invention is: A large-size positioning ring height precision adjustment device includes a base, an electric push rod, and a lifting assembly; the lifting assembly is installed on the base and is used to adjust the height of the stator unit; an electric push rod is connected between the lifting assembly and the base, and the electric push rod drives the lifting assembly to rise and fall.

[0005] Furthermore, the lifting assembly includes an outer positioning ring, a transmission ring, and multiple bullseye wheels; the transmission ring is rotatably mounted on the base, and an outer positioning ring is provided above the transmission ring. The lower end face of the outer positioning ring is provided with multiple segmented lifting surfaces. Multiple bullseye wheels are arranged between the transmission ring and the outer positioning ring. The positions of the multiple bullseye wheels correspond to the positions of the multiple lifting surfaces on the outer positioning ring, and they roll in cooperation. The electric push rod drives the transmission ring to rotate.

[0006] Furthermore, the extension and retraction direction of the electric push rod is consistent with the tangential direction of the transmission ring.

[0007] Furthermore, a cylindrical pin is provided on the edge of the transmission ring and inserted into the hole on the telescopic end of the electric push rod, and it is hinged to the hole of the electric push rod. The fixed end of the electric push rod is installed on the base.

[0008] Furthermore, multiple guide holes are provided on the outer edge of the outer positioning ring, and guide holes are provided on the base at positions corresponding to the guide holes. The same guide post and guide sleeve assembly is installed in each guide hole and the corresponding guide hole.

[0009] Furthermore, a circular guide rail is fixed on the base, and the transmission ring is mounted on the precision circular guide rail, so that the transmission ring can be rotated and mounted on the base.

[0010] Furthermore, an inner positioning ring is concentrically arranged inside the outer positioning ring, and the inner positioning ring is fixed on the base.

[0011] Furthermore, a metal sensing pointer is installed on the outside of the transmission ring, and a metal sensing proximity switch is installed on the base. The metal sensing proximity switch is used in conjunction with the metal sensing pointer.

[0012] Compared with the prior art, the present invention has the following advantages: This invention enables a smoothly and precisely adjustable positioning ring with electric control to switch freely between given required heights.

[0013] This invention has the advantages of lightweight structure, high precision, good stability, easy development and low maintenance cost.

[0014] This invention uses precision circular guide rails, precision bullseye wheels, precision guide post and guide sleeve assemblies, and precision multiple evenly distributed lifting mechanisms to ensure the precision, stability, and smoothness of the entire system. It has a lightweight structure, is easy to operate, has low development costs, and is easy to maintain, providing a technical guarantee for the assembly process of the rotor-stator unit. Attached Figure Description

[0015] Figure 1 This is a main sectional view of the present invention; Figure 2 This is a top view of the present invention; Figure 3 This is a schematic diagram of the outer positioning ring structure of the present invention; Figure 4 This is a schematic diagram of the assembly structure of the present invention; The components include: 1. Base; 2. Inner positioning ring; 3. Outer positioning ring; 301. Lifting surface; 302. Guide hole one; 4. Transmission ring; 5. Circular guide rail; 6. Bullseye wheel; 7. Guide post and guide sleeve assembly; 8. Electric push rod; 9. Metal sensing pointer; 10. Metal sensing proximity switch. Detailed Implementation

[0016] To better understand the purpose, structure, and function of this invention, the invention will be described in further detail below with reference to the accompanying drawings.

[0017] like Figure 1 , Figure 2 , Figure 4 As shown, the present invention provides a large-size positioning ring height precision adjustment device, including a base 1, an electric push rod 8 and a lifting assembly; the lifting assembly is installed on the base 1, the lifting assembly is used to adjust the height of the stator unit, and the electric push rod 8 is connected between the lifting assembly and the base 1, and the electric push rod 8 drives the lifting assembly to rise and fall.

[0018] like Figure 1 , Figure 3 ,Figure 4 As shown, the lifting assembly includes an outer positioning ring 3, a transmission ring 4, and multiple bullseye wheels 6; a circular guide rail 5 is fixed on the base 1, and the transmission ring 4 is mounted on the precision circular guide rail 5 to achieve rotational mounting of the transmission ring 4 on the base 1. An outer positioning ring 3 is set above the transmission ring 4. The lower end face of the outer positioning ring 3 is provided with 6 evenly distributed segmented lifting surfaces 301 (a type of surface where several planes of different heights are connected by a spiral surface). 6 bullseye wheels 6 are arranged between the transmission ring 4 and the outer positioning ring 3. The 6 bullseye wheels 6 correspond to the 6 lifting surfaces 301 on the outer positioning ring 3 and are rolled together. The electric push rod 8 pushes the transmission ring 4 to rotate.

[0019] like Figure 2 , Figure 4 As shown, the extension and retraction direction of the electric push rod 8 is consistent with the tangential direction of the transmission ring 4.

[0020] like Figure 2 , Figure 4 As shown, a cylindrical pin is provided on the edge of the transmission ring 4 and inserted into the hole on the telescopic end of the electric push rod 8, and it is hinged to the hole of the electric push rod 8. The fixed end of the electric push rod 8 is installed on the base 1.

[0021] like Figures 1-4 As shown, four guide holes 302 are evenly distributed on the outer edge of the outer positioning ring 3. Guide holes 2 are opened on the base 1 at the positions corresponding to the guide holes 302. The same guide post and guide sleeve assembly 7 is installed in each guide hole 302 and the corresponding guide hole 2, so that the outer positioning ring 3 can slide up and down along the guide post and ensure that the center does not deviate.

[0022] like Figure 1 , Figure 4 As shown, an inner positioning ring 2 is concentrically arranged inside the outer positioning ring 3, and the inner positioning ring 2 is fixed on the base 1.

[0023] The low-pressure turbine stator unit is divided into two parts: the rotor unit and the stator unit. The rotor unit is installed on the inner positioning ring 2, and the stator unit is installed on the outer positioning ring 3. The height of the outer positioning ring 3 needs to be adjusted during the assembly process.

[0024] The working process is as follows: the electric push rod 8 can be controlled to push and pull the transmission ring 4 along the tangential direction of the transmission ring 4 to rotate. The transmission ring 4 drives the six bullseye wheels 6 to rotate synchronously on the six segmented spiral surfaces 301 of the outer positioning ring 3, thereby driving the outer positioning ring 3 to rise and fall precisely.

[0025] like Figure 2As shown, a metal sensing pointer 9 is installed on the outside of the transmission ring 4, and a metal sensing proximity switch 10 is installed on the base 1. The metal sensing proximity switch 10 is used in conjunction with the metal sensing pointer 9 and can provide signal feedback at a specified height to indicate the current height position to the operator or control the start and stop of the electric push rod 8.

[0026] It is understood that the present invention has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of the invention. Furthermore, under the teachings of the present invention, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of the invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of the present invention.

Claims

1. A large size positioning ring height precision adjusting device, characterized in that: Including base (1), electric push rod (8) and lifting assembly, the base (1) is installed with lifting assembly, the lifting assembly is used for adjusting the height of stator unit body, and the electric push rod (8) is connected between the lifting assembly and the base (1), the lifting assembly is driven to lift by the electric push rod (8).

2. The device for height adjustment of a large size positioning ring according to claim 1, characterized in that: The lifting assembly includes outer positioning ring (3), transmission ring (4) and multiple cow eye wheels (6), the transmission ring (4) is rotatably installed on the base (1), the outer positioning ring (3) is arranged above the transmission ring (4), the lower end surface of the outer positioning ring (3) is provided with multiple segmented rotary lifting surfaces (301), multiple cow eye wheels (6) are arranged between the transmission ring (4) and the outer positioning ring (3), multiple cow eye wheels (6) are in consistent correspondence with multiple rotary lifting surfaces (301) on the outer positioning ring (3), and are in rolling fit, the electric push rod (8) drives the transmission ring (4) to rotate.

3. A large size positioning ring height precise adjustment device according to claim 2, characterized in that: The extension direction of the electric push rod (8) is consistent with the tangent direction of the transmission ring (4).

4. The device for height adjustment of a large size positioning ring according to claim 3, characterized in that: The cylindrical pin is arranged on the edge of the transmission ring (4) and is inserted into the hole on the extension end of the electric push rod (8), and is hinged with the hole of the electric push rod (8), and the fixed end of the electric push rod (8) is installed on the base (1).

5. The device for height adjustment of a large size positioning ring according to claim 3, characterized in that: Multiple guide holes one (302) are formed in the outer edge of the outer positioning ring (3), guide holes two are formed in the base (1) in a position corresponding to the guide holes one (302), and a same guide column and sleeve assembly (7) is installed in each guide hole one (302) and the corresponding guide hole two.

6. The device for height adjustment of a large size positioning ring according to claim 3, characterized in that: The base (1) is fixed with a circular ring guide rail (5), the transmission ring (4) is installed on the precise circular ring guide rail (5), and the transmission ring (4) is rotatably installed on the base (1).

7. The device for height adjustment of a large size positioning ring according to claim 2, characterized in that: The inner positioning ring (2) is concentrically arranged in the outer positioning ring (3), and the inner positioning ring (2) is fixed on the base (1).

8. The device for height adjustment of a large size positioning ring according to claim 2, characterized in that: The metal induction pointer (9) is installed on the outer side of the transmission ring (4), the metal induction proximity switch (10) is installed on the base (1), and the metal induction proximity switch (10) is used in conjunction with the metal induction pointer (9).

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