Universal rotary clamp for quick change of turbine blade root

Abstract

The utility model discloses a turbine blade root quick-change universal rotary clamp which comprises a bottom plate, a supporting block arranged at the first end of the bottom plate, a base arranged at the second end of the bottom plate, a first angle block arranged at the bottom of the supporting block, and a first positioning plate and a second positioning plate arranged at the two ends of the base. A first limiting block is detachably installed on the first positioning plate, a clamping piece is arranged on the second positioning plate and horizontally arranged, a second angle block is installed on the base, a second limiting block is arranged on the rear side of the second angle block at intervals and connected with the base, and the blade root of the workpiece abuts against the second limiting block. According to the universal rotary clamp for quick replacement of the turbine blade root, the vertical direction of the workpiece is limited by adjusting the first angle block and the second angle block, the clamping position of the workpiece is adjusted by replacing the first limiting block, screwing the tightening piece, limiting the horizontal direction of the workpiece and replacing the second limiting block, and blades of different sizes are clamped; and the effect of rapidly switching the clamps is achieved.

Description

Technical Field

[0001] The utility model embodiment relates to the technical field of clamps, and in particular to a universal rotary clamp for quick-changing blade roots of steam turbines. 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.

[0003] There are many types of steam turbine blades, such as mushroom-shaped, T-shaped, and fork-shaped, with different specifications and sizes. According to the blades of different specifications, specific fixtures need to be replaced, so the pre-production preparation time is long and there is a problem of slow fixture switching speed. Utility Model Content

[0004] In order to solve the related technical problems, the utility model provides a universal rotary clamp for quick-changing blade roots of a steam turbine, so as to solve the problem of slow clamp switching speed.

[0005] To achieve the above purpose, the embodiment of the utility model adopts the following technical solutions:

[0006] A universal rotary fixture for quick-changing blade roots of steam turbines, comprising a bottom plate, wherein:

[0007] A support block is disposed at the first end of the bottom plate, and a base is disposed at the second end of the bottom plate.

[0008] A first angle block is disposed at the bottom of the support block, and the first angle block is configured to move away from or close to the workpiece in a vertical direction.

[0009] The first end of the base is provided with a first positioning plate, the second end of the base is provided with a second positioning plate, the first positioning plate is detachably provided with a first limiting block, the second positioning plate is provided with a tightening member, the tightening member is horizontally arranged, the first limiting block and the tightening member position the workpiece in a horizontal direction,

[0010] A second angle block is detachably mounted on the base, and the second angle block can move in a horizontal direction on the base. A second limit block is arranged at an interval on the rear side of the second angle block, and the second limit block is detachably connected to the base. The blade root of the workpiece abuts against the second limit block, and the first angle block and the second angle block position the workpiece in a vertical direction.

[0011] The first end of the support block is fixedly connected to the base plate, and a first threaded hole is opened on the second end of the support block. The first threaded hole is connected to the first angle block through a fastener, and the fastener drives the first angle block to move in a vertical direction to move away from or closer to the workpiece.

[0012] The base is L-shaped, and includes a first surface and a second surface. The first surface is horizontally arranged, the second surface is vertically arranged to the first surface, and a first end of the first surface is connected to a first end of the second surface.

[0013] A positioning key is disposed transversely on the first surface, a key slot corresponding to the positioning key is disposed at the bottom of the second angle block, and the second angle block is movably mounted on the positioning key.

[0014] The first positioning plate and the second positioning plate are symmetrically arranged on both sides of the first surface.

[0015] The first end of the first positioning plate is fixedly connected to the base, the second end of the first positioning plate is provided with a second threaded hole, and the tightening member is arranged in the second threaded hole.

[0016] The first end of the second positioning plate is fixedly connected to the base, and the first limiting block is fastened and installed on the second end of the second positioning plate by bolts.

[0017] The bottom plate is circular, and a plurality of mounting grooves are equidistantly arranged on the periphery of the bottom plate.

[0018] The beneficial effects of the utility model are as follows: compared with the prior art, the utility model provides a universal rotary fixture for quick-changing blade roots of steam turbines, which has the following beneficial effects:

[0019] 1. By adjusting the first angle block, adjusting or replacing the second angle block to limit the vertical direction of the workpiece, by replacing the first limit block and tightening the clamping piece to limit the horizontal direction of the workpiece, and replacing the second limit block to adjust the clamping position of the workpiece, blades of different sizes can be clamped, with the effect of quickly switching the fixture;

[0020] 2. By replacing the second limit block to adjust the clamping position of the workpiece, the clamping stability is increased;

[0021] 3. By arranging multiple installation grooves at equal distances around the periphery of the bottom plate, the installation efficiency and installation stability are improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate and understand the technical solutions in the embodiments of the present invention, the following briefly introduces the background technology of the present invention and the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the contents of the embodiments of the present invention and these drawings without paying any creative work.

[0023] Figure 1 It is a structural schematic diagram of a universal rotary fixture for quick-changing blade roots of steam turbines provided by an embodiment of the utility model;

[0024] Figure 2 It is a structural schematic diagram of a universal rotary fixture for quick-changing blade roots of steam turbines provided by an embodiment of the utility model;

[0025] Figure 3 The utility model is a schematic structural diagram of a universal rotary clamp for quick-changing blade roots of steam turbines provided in an embodiment of the utility model. DETAILED DESCRIPTION

[0026] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0027] In order to facilitate the understanding of the utility model, the utility model will be described more comprehensively with reference to the relevant drawings. The preferred embodiments of the utility model are given in the drawings. However, the utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the utility model more thoroughly understood. It should be noted that when a component is referred to as "fixed to" another component, it can be directly on another component or there can also be a central component. When a component is considered to be "connected" to another component, it can be directly connected to another component or there may be a central component at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are only for illustrative purposes and are not intended to be the only implementation method. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those generally understood by technicians in the technical field of the utility model. The terms used in the specification of the utility model herein are only for the purpose of describing specific embodiments and are not intended to limit the utility model. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0028] See also Figures 1 to 3As shown, the present embodiment provides a universal rotary fixture for quick-changing blade roots of steam turbines, which includes a base plate 1, a support block 2 is provided at the first end of the base plate 1, a base 3 is provided at the second end of the base plate 1, a first angle block 4 is provided at the bottom of the support block 2, and the first angle block 4 is configured to move away from or close to a workpiece 9 in a vertical direction, a first positioning plate 5 is provided at the first end of the base 3, and a second positioning plate 6 is provided at the second end of the base 3, a first limiting block 51 is detachably mounted on the first positioning plate 5, a tightening member 61 is provided on the second positioning plate 6, and the tightening member 61 is horizontally arranged, and the first limiting block 51 and the tightening member 61 position the workpiece 9 in a horizontal direction, a second angle block 7 is detachably mounted on the base 3, and the second angle block 7 can move in a horizontal direction on the base 3, a second limiting block 8 is arranged at intervals on the rear side of the second angle block 7, and the second limiting block 8 is detachably connected to the base 3, the blade root of the workpiece 9 abuts against the second limiting block 8, and the first angle block 4 and the second angle block 7 position the workpiece 9 in a vertical direction.

[0029] It can be seen that by adjusting or replacing the second angle block 7 to abut the first side of the workpiece 9, the first angle block 4 is adjusted in the vertical direction so that the first angle block 4 abuts the second side of the workpiece 9, so as to cooperate with the second angle block 7 to limit the vertical direction of the workpiece 9, by replacing the first limit block 51 to abut the third side of the workpiece 9, tightening the tightening member 61 to abut the fourth side of the workpiece 9 to limit the horizontal direction of the workpiece 9, by replacing the second limit block 8 to adjust the clamping position of the workpiece 9, blades of different sizes can be clamped, which has the advantage of quickly switching the clamp.

[0030] As an embodiment, the first end of the support block 2 is fixedly connected to the base plate 1, and a first threaded hole is opened on the second end of the support block 2. The fastener passes through the first threaded hole and is connected to the first angle block 4. The fastener drives the first angle block 4 to move in the vertical direction to move away from or closer to the workpiece 9.

[0031] Specifically, the first end of the support block 2 is connected through the bottom plate 1 by screws, and is fixedly mounted on the top of the bottom plate 1. In order to increase the stability of the connection, multiple screws can be provided. Preferably, two symmetrical screws are provided for fixing.

[0032] As an embodiment, the base 3 is L-shaped, and the base 3 includes a first surface and a second surface, the first surface is horizontally arranged, the second surface is vertically arranged, and the first end of the first surface is connected to the first end of the second surface.

[0033] It can be seen that by setting the base 3 in an L shape, cooperating with the first limit block 51, the tightening member 61, the first angle block 4 and the second angle block 7 to form a processing station, the structure is simple and the use cost can be reduced.

[0034] As an implementation mode, a positioning key is horizontally arranged on the first surface, a key slot corresponding to the positioning key is arranged at the bottom of the second angle block 7, and the second angle block 7 is movably mounted on the positioning key.

[0035] It can be seen that the second angle block 7 can be moved on the positioning key through the keyway to adapt to workpieces 9 of different sizes.

[0036] Specifically, a screw is further provided on the second angle block 7 to fix the second angle block 7 on the positioning key.

[0037] As an implementation manner, the first positioning plate 5 and the second positioning plate 6 are symmetrically arranged on both sides of the first surface.

[0038] It can be seen that the first positioning plate 5 and the second positioning plate 6 facilitate the tightening member 61 and the first limiting block 51 to limit the workpiece 9 in the horizontal direction.

[0039] As an embodiment, the first end of the first positioning plate 5 is fixedly connected to the base 3, the second end of the first positioning plate 5 is provided with a second threaded hole, the tightening member 61 is provided in the second threaded hole, the first end of the second positioning plate 6 is fixedly connected to the base 3, and the first limit block 51 is fastened and installed on the second end of the second positioning plate 6 by bolts.

[0040] It can be seen that the tightening member 61 and the first limiting block 51 are both fixed by screws, and have a simple structure and are easy to install, thereby improving the switching efficiency.

[0041] As an implementation manner, the base plate 1 is circular, and a plurality of mounting grooves are equidistantly arranged on the periphery of the base plate 1 .

[0042] It can be seen that by equidistantly arranging a plurality of mounting grooves, the stability of the installation of the base plate 1 is increased, thereby avoiding affecting the stability of the clamp operation.

[0043] The specific working principle of the above-mentioned universal rotary fixture for quick-changing blade roots of steam turbines is as follows:

[0044] According to different models of workpieces 9, the corresponding second limit block 8 is replaced, the blade root of the workpiece 9 is abutted against the second limit block 8, the workpiece 9 is limited in the vertical direction by the first angle block 4 and the second angle block 7, the first limit block 51 limits one side of the workpiece 9 in the horizontal direction, and finally the tightening piece 61 is rotated to abut its protruding part against the workpiece 9 to complete the fixation of the workpiece 9.

[0045] In the embodiments disclosed in the present invention, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense. For example, "connect" can be a fixed connection, a detachable connection, or an integral connection; "connect" can be a direct connection or an indirect connection through an intermediate medium. For those skilled in the art, the specific meanings of the above terms in the embodiments disclosed in the present invention can be understood according to specific circumstances.

[0046] The above embodiments are only to illustrate the basic principles and characteristics of the present invention. The present invention is not limited by the above embodiments. Without departing from the spirit and scope of the present invention, the present invention may be subject to various changes and modifications, which are within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A universal rotary fixture for quick-changing blade roots of steam turbines, characterized in that: The turbine blade root quick-change universal rotary fixture comprises a bottom plate, wherein: A support block is disposed at the first end of the bottom plate, and a base is disposed at the second end of the bottom plate. A first angle block is disposed at the bottom of the support block, and the first angle block is configured to move away from or close to the workpiece in a vertical direction. The first end of the base is provided with a first positioning plate, the second end of the base is provided with a second positioning plate, the first positioning plate is detachably provided with a first limiting block, the second positioning plate is provided with a tightening member, the tightening member is horizontally arranged, the first limiting block and the tightening member position the workpiece in a horizontal direction, A second angle block is detachably mounted on the base, and the second angle block can move in a horizontal direction on the base. A second limit block is arranged at an interval on the rear side of the second angle block, and the second limit block is detachably connected to the base. The blade root of the workpiece abuts against the second limit block, and the first angle block and the second angle block position the workpiece in a vertical direction.

2. The universal rotary fixture for quick-changing blade roots of steam turbines according to claim 1, characterized in that: The first end of the support block is fixedly connected to the base plate, and a first threaded hole is opened on the second end of the support block. The first threaded hole is connected to the first angle block through a fastener, and the fastener drives the first angle block to move in a vertical direction to move away from or closer to the workpiece.

3. The universal rotary fixture for quick-changing blade roots of steam turbines according to claim 1, characterized in that: The base is L-shaped, and includes a first surface and a second surface. The first surface is horizontally arranged, the second surface is vertically arranged to the first surface, and a first end of the first surface is connected to a first end of the second surface.

4. The universal rotary fixture for quick-changing blade roots of steam turbines according to claim 3, characterized in that: A positioning key is disposed transversely on the first surface, a key slot corresponding to the positioning key is disposed at the bottom of the second angle block, and the second angle block is movably mounted on the positioning key.

5. The universal rotary fixture for quick-changing blade roots of steam turbines according to claim 3, characterized in that: The first positioning plate and the second positioning plate are symmetrically arranged on both sides of the first surface.

6. The universal rotary fixture for quick-changing blade roots of steam turbines according to claim 1, characterized in that: The first end of the first positioning plate is fixedly connected to the base, the second end of the first positioning plate is provided with a second threaded hole, and the tightening member is arranged in the second threaded hole.

7. The universal rotary fixture for quick-changing blade roots of steam turbines according to claim 1, characterized in that: The first end of the second positioning plate is fixedly connected to the base, and the first limiting block is fastened and installed on the second end of the second positioning plate by bolts.

8. The universal rotary fixture for quick-changing blade roots of steam turbines according to claim 1, characterized in that: The bottom plate is circular, and a plurality of mounting grooves are equidistantly arranged on the periphery of the bottom plate.

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