Supporting clamp for machining exhaust cylinder body of steam turbine

Abstract

The utility model discloses a support fixture for processing a cylinder body of an exhaust cylinder of a steam turbine, which is applied to the technical field of fixtures and is characterized in that a first servo motor is arranged to drive a screw rod to rotate and enable a thread bushing to move inwards until the inner side of an annular shell clings to two sides of the cylinder body, and a second servo motor drives a rectangular rod to rotate; in the rotating process of a rectangular rod, a first connecting piece is driven to rotate through a rotary disc, the first connecting piece drives the inner side of a clamping plate to horizontally move on the inner side of a limiting groove through a linkage rod and a second connecting piece, finally, air cylinder bodies of different sizes are effectively fixed, and the cylinder body clamping applicability of the clamp is greatly improved. The cylinder body is placed on the supporting frame, the hydraulic cylinder is started until the two sides of the cylinder body are aligned to the middle of the inner side of the annular shell, butt joint is completed, the fixing heights of the cylinder bodies with different radiuses can be conveniently and rapidly adjusted while the cylinder bodies are effectively fixed through the clamp, and the cylinder body clamping stability of the clamp is greatly improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of steam turbines, and particularly relates to a supporting fixture for machining a steam turbine exhaust cylinder body. Background Art

[0002] A steam turbine, also known as a steam turbine engine, is a rotary steam power device. High-temperature and high-pressure steam passes through a fixed nozzle and becomes an accelerated airflow, which is then sprayed onto the blades, causing the rotor with the blades to rotate and perform work externally. Steam turbines are the main equipment in modern thermal power plants and are also used in the metallurgical industry, chemical industry, and ship power devices. During the processing of the steam turbine cylinder body, a clamping device is required to fix the cylinder body before processing.

[0003] At present, the Chinese utility model with the announcement number: CN203712343U discloses a clamping device for processing a steam turbine cylinder body, including a mounting bracket, a V-shaped iron support frame is arranged at one end of the mounting bracket, a square cushion box is arranged at the other end of the mounting bracket, a clamping device is arranged on the upper part of the V-shaped iron support frame, and a height adjustment device is arranged on the upper part of the square cushion box. The utility model is used to clamp, adjust and tighten the cylinder body so that it can lie stably on the working table of the boring machine, and also improves the clamping efficiency and is conducive to cutting processing.

[0004] However, the above device still has certain defects. For example, most existing clamping devices for processing steam turbine cylinder bodies cannot fix the cylindrical end of the cylinder body. When the diameter of the cylindrical end of the cylinder body is too large, the clamping is not firm, which easily scratches the cylinder body. In addition, it cannot support and level cylinder bodies of different sizes, affecting the processing efficiency. Based on the above problems, we provide a support fixture for processing steam turbine exhaust cylinder bodies. Utility Model Content

[0005] The purpose of the utility model is to provide a supporting clamp for processing the exhaust cylinder body of a steam turbine. The utility model has the advantages that the clamp can effectively fix the cylinder body and conveniently adjust the fixing height of cylinder bodies with different radii, thereby greatly improving the stability of the clamp in clamping the cylinder body.

[0006] The above-mentioned technical purpose of the utility model is achieved through the following technical scheme: a supporting fixture for processing a turbine exhaust cylinder body, comprising a base plate, the front and rear of the left side of the inner cavity of the base plate are rotatably connected with a screw rod through a bearing, both sides of the surface of the screw rod are threadedly connected with a threaded sleeve, through grooves are opened on both sides of the top of the base plate, the top of the threaded sleeve is bolted with a back plate through the through grooves, the inner side of the back plate is bolted with an annular shell, the center of the inner cavity of the annular shell is bolted with a rectangular rod, the outer side of the rectangular rod is bolted with a turntable, the four sides of the turntable are bolted with a first connecting piece, the inner side of the first connecting piece is hinged with a linkage rod, the center of the top of the base plate is bolted with a base, the front and rear sides of the inner cavity of the base are bolted with a hydraulic cylinder, and the top of the hydraulic cylinder is bolted with a support frame through the base.

[0007] The above technical solution is adopted: by setting a first servo motor to drive the screw to rotate, and the threaded sleeve to move inward until the inner side of the annular shell is close to the two sides of the cylinder body, the second servo motor drives the rectangular rod to rotate, and during the rotation of the rectangular rod, the first connecting member will be driven to rotate through the turntable, and the first connecting member will drive the inner side of the clamp to move horizontally inside the limit groove through the linkage rod and the second connecting member, and finally effectively fix the cylinder bodies of different sizes, greatly improving the applicability of the clamp to clamp the cylinder body; by setting the cylinder body to be placed on the support frame and turning on the hydraulic cylinder, the hydraulic cylinder pushes the cylinder body upward through the support frame until the two sides of the cylinder body are aligned with the middle of the inner side of the annular shell, and the docking is completed, which is convenient for the clamp to effectively fix the cylinder body, and can conveniently adjust the fixing height of cylinder bodies of different radii, greatly improving the stability of the clamp to clamp the cylinder body.

[0008] The utility model is further configured that the other end of the linkage rod is hinged with a second connecting piece.

[0009] By adopting the above technical solution, the linkage rod can be connected to the clamping plate through the second connecting member.

[0010] The utility model is further configured that the annular shell is bolted with limiting grooves around its periphery, and a clamping plate is slidably connected to the inner side of the limiting groove, and the inner side of the clamping plate is bolted to the second connecting piece.

[0011] By adopting the above technical solution, the clamping plate can be driven by the linkage rod and slide horizontally inside the limiting groove.

[0012] The utility model is further configured that a first servo motor is bolted at the center of the outer side of the back plate.

[0013] The above technical solution is adopted: the first servo motor is fixed on the outer sides of the back plates on both sides.

[0014] The utility model is further configured that the outer side of the rectangular rod passes through the back plate and is bolted to the output end of the first servo motor.

[0015] The above technical solution is adopted: the first servo motor drives the rectangular rod to rotate in the inner cavity of the annular shell.

[0016] The utility model is further configured that the second servo motor is bolted to the front and rear of the right side of the bottom plate, and the right side of the screw rod passes through the bottom plate and is bolted to the output end of the second servo motor.

[0017] The above technical solution is adopted: the second servo motor drives the screw rod to rotate in the inner cavity of the bottom plate.

[0018] The utility model is further configured that a rubber pad is attached to the inner side of the clamping plate.

[0019] The above technical solution is adopted: the friction force on the inner side of the splint is increased by using the characteristics of rubber.

[0020] The utility model is further configured that the four corners of the bottom of the base plate are bolted with seat feet.

[0021] The above technical solution is adopted: the stability of the base plate is improved by using the base legs.

[0022] In summary, the utility model has the following beneficial effects:

[0023] 1. The utility model sets a first servo motor to drive the screw to rotate, and moves the threaded sleeve inward until the inner side of the annular shell is close to the two sides of the cylinder body, so that the second servo motor drives the rectangular rod to rotate. During the rotation of the rectangular rod, the first connecting member is driven to rotate through the turntable. The first connecting member drives the inner side of the clamping plate to move horizontally inside the limit groove through the linkage rod and the second connecting member, and finally completes the effective fixation of cylinder bodies of different sizes, greatly improving the applicability of the clamp to the cylinder body;

[0024] 2. The utility model places the cylinder body on a support frame and starts the hydraulic cylinder, so that the hydraulic cylinder pushes the cylinder body upward through the support frame until the two sides of the cylinder body are aligned with the middle of the inner side of the annular shell to complete the docking, which is convenient for the clamp to effectively fix the cylinder body and can conveniently adjust the fixing height of cylinder bodies with different radii, greatly improving the stability of the clamp's clamping of the cylinder body. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0026] Figure 2 It is a front view of the overall structure of the utility model;

[0027] Figure 3 It is a partial structural side view of the utility model;

[0028] Figure 4It is a partial structural side sectional view of the utility model.

[0029] Figure numerals: 1, bottom plate; 2, screw rod; 3, threaded sleeve; 4, through groove; 5, back plate; 6, annular shell; 7, rectangular rod; 8, turntable; 9, first connecting member; 10, linkage rod; 11, base; 12, hydraulic cylinder; 13, support frame; 14, second connecting member; 15, limit groove; 16, clamping plate; 17, first servo motor; 18, second servo motor; 19, rubber pad; 20, seat foot. DETAILED DESCRIPTION

[0030] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0031] Embodiment 1:

[0032] refer to Figure 1 , Figure 2 and Figure 4 A supporting fixture for processing a steam turbine exhaust cylinder body comprises a base plate 1, wherein the front and rear sides of the left side of the inner cavity of the base plate 1 are rotatably connected with a screw rod 2 through a bearing, and threaded sleeves 3 are threadedly connected on both sides of the surface of the screw rod 2, through grooves 4 are provided on both sides of the top of the base plate 1, and a back plate 5 is bolted through the top of the threaded sleeve 3 through the through grooves 4, and an annular shell 6 is bolted on the inner side of the back plate 5, and a rectangular rod 7 is bolted on the center of the inner cavity of the annular shell 6, and a turntable 8 is bolted on the outer side of the rectangular rod 7, and a first connecting member 9 is bolted around the turntable 8, and a linkage rod 10 is hinged on the inner side of the first connecting member 9.

[0033] refer to Figure 4 The other end of the linkage rod 10 is hinged with a second connecting member 14 , so that the linkage rod 10 can be connected to the clamping plate 16 through the second connecting member 14 .

[0034] refer to Figure 1 , Figure 2 and Figure 4 The annular shell 6 is bolted with a limiting groove 15 around it, and a clamping plate 16 is slidably connected to the inner side of the limiting groove 15. The inner side of the clamping plate 16 is bolted to the second connecting member 14, so that the clamping plate 16 can be driven by the linkage rod 10 and slide horizontally inside the limiting groove 15.

[0035] refer to Figure 1 , Figure 2 and Figure 3 A first servo motor 17 is bolted to the center of the outer side of the back plate 5 , so that the first servo motor 17 is fixed to the outer sides of the back plates 5 on both sides.

[0036] refer to Figure 4 The outer side of the rectangular rod 7 passes through the back plate 5 and is bolted to the output end of the first servo motor 17 , so that the first servo motor 17 drives the rectangular rod 7 to rotate in the inner cavity of the annular shell 6 .

[0037] Brief description of the use process: Before the device fixes the cylinder body, first turn on the first servo motor 17, so that the first servo motor 17 drives the screw 2 to rotate, and moves the threaded sleeve 3 inward until the inner side of the annular shell 6 is close to the two sides of the cylinder body, and then turn on the second servo motor 18, so that the second servo motor 18 drives the rectangular rod 7 to rotate. During the rotation of the rectangular rod 7, the turntable 8 drives the first connecting member 9 to rotate. The first connecting member 9 drives the inner side of the clamping plate 16 to move horizontally inside the limiting groove 15 through the linkage rod 10 and the second connecting member 14 until the inner side of the clamping plate 16 completely clamps and fixes the outer side of the cylinder body.

[0038] Embodiment 2:

[0039] refer to Figure 1 , Figure 2 and Figure 3 A support fixture for processing a steam turbine exhaust cylinder body includes a base 11, the base 11 is bolted to the center of the top of a bottom plate 1, hydraulic cylinders 12 are bolted to the front and rear sides of the inner cavity of the base 11, and the top of the hydraulic cylinder 12 passes through the base 11 and is bolted to a support frame 13.

[0040] refer to Figure 1 , Figure 2 and Figure 3 A second servo motor 18 is bolted to the front and rear of the right side of the bottom plate 1 , and the right side of the screw rod 2 passes through the bottom plate 1 and is bolted to the output end of the second servo motor 18 , so that the second servo motor 18 drives the screw rod 2 to rotate in the inner cavity of the bottom plate 1 .

[0041] refer to Figure 2 and Figure 4 A rubber pad 19 is attached to the inner side of the splint 16 to improve the friction force of the inner side of the splint 16 through the characteristics of rubber.

[0042] refer to Figure 1 , Figure 2 and Figure 3 The four corners of the bottom of the base plate 1 are bolted with base feet 20, which improve the stability of the base plate 1.

[0043] Brief description of the use process: Before using the device, you first need to observe and measure the length and radius of the cylinder body. After determining the data, place the cylinder body on the support frame 13, and turn on the hydraulic cylinder 12, so that the hydraulic cylinder 12 pushes the cylinder body upward through the support frame 13 until the two sides of the cylinder body are aligned with the middle of the inner side of the annular shell 6 to complete the docking.

[0044] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A support fixture for machining a steam turbine exhaust cylinder body, comprising a base plate (1), characterized in that: The front and rear sides of the left side of the inner cavity of the bottom plate (1) are rotatably connected to a screw rod (2) through bearings, and both sides of the surface of the screw rod (2) are threadedly connected to a threaded sleeve (3), and through grooves (4) are provided on both sides of the top of the bottom plate (1), and the top of the threaded sleeve (3) passes through the through groove (4) and is bolted to a back plate (5), and the inner side of the back plate (5) is bolted to an annular shell (6), and the center of the inner cavity of the annular shell (6) is bolted to a rectangular rod (7), and the outer side of the rectangular rod (7) is bolted to a rotating disk (8), and the surrounding of the rotating disk (8) is bolted to a first connecting member (9), and the inner side of the first connecting member (9) is hinged to a linkage rod (10), and the center of the top of the bottom plate (1) is bolted to a base (11), and the front and rear sides of the inner cavity of the base (11) are bolted to a hydraulic cylinder (12), and the top of the hydraulic cylinder (12) passes through the base (11) and is bolted to a support frame (13).

2. A support fixture for processing a steam turbine exhaust cylinder according to claim 1, characterized in that: The other end of the linkage rod (10) is hingedly connected to a second connecting piece (14).

3. A support fixture for processing a steam turbine exhaust cylinder according to claim 2, characterized in that: The annular shell (6) is bolted with a limiting groove (15) on all sides, and the inner side of the limiting groove (15) is slidably connected with a clamping plate (16), and the inner side of the clamping plate (16) is bolted to the second connecting member (14).

4. A support fixture for processing a steam turbine exhaust cylinder according to claim 1, characterized in that: A first servo motor (17) is bolted to the center of the outer side of the back plate (5).

5. A support fixture for processing a steam turbine exhaust cylinder according to claim 4, characterized in that: The outer side of the rectangular rod (7) passes through the back plate (5) and is bolted to the output end of the first servo motor (17).

6. A support fixture for processing a steam turbine exhaust cylinder according to claim 1, characterized in that: A second servo motor (18) is bolted to the front and rear of the right side of the base plate (1), and the right side of the screw rod (2) passes through the base plate (1) and is bolted to the output end of the second servo motor (18).

7. A support fixture for processing a steam turbine exhaust cylinder body according to claim 3, characterized in that: A rubber pad (19) is attached to the inner side of the clamping plate (16).

8. The supporting fixture for processing the exhaust cylinder of a steam turbine according to claim 1, characterized in that: The four corners of the bottom of the base plate (1) are bolted with base feet (20).

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