Clamping and dividing device for machining mortise of main shaft of turbine equipment

Abstract

The utility model discloses a clamping and dividing device for machining a mortise of a main shaft of turbine equipment, belongs to the technical field of excess pressure turbine power generation, and aims to solve the technical problem that the mortise of the main shaft is difficult to machine due to the fact that the size and the weight of the main shaft are large and a machine tool is limited in the prior art. The device comprises a fixing mechanism which is used for fixing and supporting a main shaft; the positioning mechanism comprises an index plate and a point position marking device; the index plate is fixedly connected with one end of the main shaft, a plurality of pin holes are formed in the index plate in an annular array mode, and positioning pins are inserted into the pin holes; the forming positions of the pin holes are in one-to-one correspondence with the machining positions of the mortises in the main shaft; the point position marking device is used for marking the height position of the positioning pin. The device can be better used for machining and positioning mortises of large spindles, and is wide in application range, simple in structure, easy to disassemble and assemble and controllable in cost.

Description

Technical Field

[0001] The utility model relates to the technical field of residual pressure turbine power generation, in particular to a clamping and indexing device for machining the tenon groove of a main shaft of turbine equipment. Background Art

[0002] In the steel industry, the blast furnace gas waste pressure turbine power generation device (TRT) is one of the typical applications of waste pressure turbine technology; it uses the pressure energy and thermal energy of the blast furnace top gas, a by-product of the blast furnace smelting process, to convert it into mechanical energy through the work of a turbine expander, and then further into electrical energy.

[0003] The core component of the TRT system is the turbine main unit, which is divided into four major parts: rotor, stator, bearing and sealing device.

[0004] The rotor is the core component of the turbine main engine, which includes the main shaft, blades and other parts. The processing of the key part main shaft is of utmost importance. Due to the heavy weight of the main shaft and the limited space of the machine tool equipment, the main shaft tenon and groove processing is difficult.

[0005] Therefore, there is an urgent need for a clamping and indexing device that is convenient for machining the tenon and groove of the main shaft of a turbine equipment. Utility Model Content

[0006] The utility model aims to provide a clamping and indexing device for machining the tenon and mortise of a turbine spindle, so as to solve the technical problem in the prior art that the spindle tenon and mortise machining is difficult due to the large volume and weight of the spindle and the limitation of the machine tool.

[0007] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0008] The utility model provides a clamping and indexing device for machining the tenon groove of a main shaft of a turbine equipment, comprising:

[0009] A fixing mechanism, the fixing mechanism is used to fix and support the main shaft;

[0010] A positioning mechanism, the positioning mechanism comprising a dividing plate and a point marking device; the dividing plate is fixedly connected to one end of the main shaft, a plurality of pin holes are arranged in a circular array on the dividing plate, and the pin holes are used to insert positioning pins; the opening positions of the pin holes correspond one to one with the positions of the tenon grooves on the main shaft;

[0011] The point marking device is used to mark the height position of the positioning pin.

[0012] Optionally or preferably, the fixing mechanism comprises a processing bracket, a fastening screw and a gland;

[0013] The gland is arranged on the processing bracket by the fastening screws and is formed with a buckling portion;

[0014] The main shaft is fixed in the buckling part, and a bearing bush is arranged between the main shaft and the buckling part.

[0015] Optionally or preferably, the point marking device includes a dial indicator and a fixing frame for fixing the dial indicator;

[0016] The pointer of the dial indicator is used to mark the height position of the positioning pin.

[0017] Optionally or preferably, the number of the fixing mechanisms is , and they are respectively arranged on both sides of the main shaft.

[0018] Optionally or preferably, the positioning pin is a cylindrical structure, and the positioning pin is interference fitted in the pin hole.

[0019] Based on the above technical solution, the utility model can at least produce the following technical effects:

[0020] The utility model provides a clamping and indexing device for processing the tenon groove of a main shaft of a turbine equipment, which fixes a dividing plate and the main shaft, and is provided with a plurality of pin holes corresponding to the tenon grooves of the main shaft on the dividing plate, and positioning pins are provided in the pin holes. The recorded positions of the positioning pins can be obtained by a point marking device. After completing a tenon groove processing, the position of the positioning pin is adjusted and the main shaft is rotated until the adjusted positioning pin coincides with the recorded position obtained by the point marking device, thereby accurately positioning the processing position of the tenon groove. The device has a simple structure, is easy to disassemble and assemble, and has controllable costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the connection relationship of the clamping and indexing devices for the main shaft tenon groove processing of the turbine equipment of the utility model;

[0022] Figure 2 yes Figure 1 Middle AA section;

[0023] Figure 3 It is a structural schematic diagram of a dividing plate in a clamping and dividing device for processing the tenon groove of a main shaft of a turbine device according to the utility model;

[0024] Figure 4 The utility model is a structural schematic diagram of a fixing mechanism in a clamping and indexing device for processing the tenon groove of a main shaft of a turbine device.

[0025] In the figure: 10, fixing mechanism; 11, processing bracket; 12, fastening screw; 13, pressure cover; 20, positioning mechanism; 21, dividing plate; 211, pin hole; 22, positioning pin; 30, main shaft; 31, bearing. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model; obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the utility model without making creative work belong to the scope of protection of the utility model.

[0027] Example

[0028] See also Figures 1 to 4 , a clamping and indexing device for machining the tenon groove of a main shaft of a turbine equipment, comprising

[0029] The fixing mechanism 10 and the positioning mechanism 20, wherein the fixing mechanism 10 is used to fix and support the main shaft 30, and the positioning mechanism 20 is used to position the tenon groove on the main shaft 30, so as to facilitate subsequent processing.

[0030] In this embodiment, the number of the fixing mechanisms 10 is two, and they are respectively arranged on both sides of the main shaft 30; in other embodiments, the number of the fixing mechanisms 10 can be more, and the operator can select and arrange them according to actual work needs.

[0031] Specifically, the fixing mechanism 10 includes a processing bracket 11, fastening screws 12 and a pressure cover 13; wherein the pressure cover 13 is fixed to the processing bracket 11 by a plurality of fastening screws 12, and a buckling portion for fixing the main shaft 30 is formed between the pressure cover 13 and the processing bracket 11.

[0032] In this embodiment, the main shaft 30 is fixed in sequence by a plurality of buckling parts, and the main shaft 30 and the buckling parts are connected by a bearing bush 31 .

[0033] In order to accurately determine the processing position of the tenon of the main shaft 30, a positioning mechanism 20 is further provided in the present embodiment, and the positioning mechanism 20 includes a dividing plate 21 and a point marking device; wherein the dividing plate 21 is fixedly connected to one end of the main shaft 30, and a plurality of pin holes 211 are provided in a ring array on the dividing plate 21, and the pin holes 211 are used to insert the positioning pins 22. It should be noted that the opening position of the pin holes 211 should correspond one-to-one to the processing position of the tenon on the main shaft 30. In actual work, it is necessary to predetermine the processing number and spacing of the tenon, and set the number and spacing of the pin holes 211 on the dividing plate 21 according to the processing number and spacing of the tenon.

[0034] In this embodiment, the positioning pin 22 is a cylindrical structure, and the positioning pin 22 is interference fitted in the pin hole 211 .

[0035] The point marking device is used to mark the height position of the positioning pin 22 during the first / previous mortise and tenon processing, and includes a dial indicator and a fixing frame for fixing the dial indicator. The height position of the positioning pin 22 can be marked by the pointer of the dial indicator.

[0036] The utility model provides a clamping and indexing device for machining the tenon groove of the main shaft of turbine equipment, and the specific working process is as follows:

[0037] First, the spindle 30 and the fixing mechanism 10 are hoisted onto the machine tool and aligned, and then the dividing plate 21 is detachably fixed to one end of the spindle 30, and finally the positioning pin 22 is assembled on the pin hole 211 above the center of the dividing plate 21; at this time, the point marking device is moved, the dial indicator is placed on the fixing frame, and the pointer of the dial indicator is placed at the highest point of the positioning pin 22. After completing the marking and positioning, the height of the dial indicator pointer is kept unchanged, the dial indicator is removed, and the mortise and tenon is processed; after the first mortise and tenon is processed, the positioning pin 22 is sequentially installed into the next pin hole 211. At this time, the dial indicator pointer is reset, and the spindle 30 is controlled to rotate until the spindle 30 drives the highest point of the positioning pin 22 to reach the dial indicator pointer. At this time, the rotation angle of the spindle 30 reaches the target position, and the mortise and tenon processing is performed, and the remaining mortise and tenon are processed in the same way.

[0038] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A clamping and indexing device for machining the tenon groove of a turbine main shaft, characterized in that: include: A fixing mechanism (10), the fixing mechanism (10) being used to fix and support the main shaft (30); A positioning mechanism (20), the positioning mechanism (20) comprising a dividing plate (21) and a point marking device; the dividing plate (21) is fixedly connected to one end of the main shaft (30); a plurality of pin holes (211) are arranged in a circular array on the dividing plate (21); the pin holes (211) are used to insert positioning pins (22); the opening positions of the pin holes (211) correspond one-to-one to the processing positions of the mortise and tenon grooves on the main shaft (30); The point marking device is used to mark the height position of the positioning pin (22).

2. The clamping and indexing device for machining the tenon groove of the main shaft of turbine equipment according to claim 1, characterized in that: The fixing mechanism (10) comprises a processing bracket (11), a fastening screw (12) and a pressure cover (13); The pressure cover (13) is arranged on the processing bracket (11) through the fastening screw (12) and is formed with a buckling portion; The main shaft (30) is fixed in the buckling portion, and a bearing bush (31) is arranged between the main shaft (30) and the buckling portion.

3. The clamping and indexing device for machining the tenon groove of the main shaft of turbine equipment according to claim 1, characterized in that: The point marking device comprises a dial indicator and a fixing frame for fixing the dial indicator; The pointer of the dial indicator is used to mark the height position of the positioning pin (22).

4. The clamping and indexing device for machining the tenon groove of the main shaft of a turbine equipment according to claim 1, characterized in that: The number of the fixing mechanisms (10) is two, and they are respectively arranged on both sides of the main shaft (30).

5. The clamping and indexing device for machining the tenon groove of the main shaft of turbine equipment according to claim 1, characterized in that: The positioning pin (22) is a cylindrical structure, and the positioning pin (22) is interference fitted in the pin hole (211).

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