CN210615814U - Large-scale hydraulic turbine blade bores centre bore positioning fixture - Google Patents
Large-scale hydraulic turbine blade bores centre bore positioning fixture Download PDFInfo
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- CN210615814U CN210615814U CN201921200966.4U CN201921200966U CN210615814U CN 210615814 U CN210615814 U CN 210615814U CN 201921200966 U CN201921200966 U CN 201921200966U CN 210615814 U CN210615814 U CN 210615814U
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Abstract
The utility model discloses a large-scale hydraulic turbine blade drill center hole positioning fixture, which comprises a bottom plate, a first supporting positioning block, a second supporting positioning block, a first pressing beam and a second pressing beam, wherein the bottom plate is provided with a key groove and a fixing groove along the length direction, the key groove is internally provided with a positioning key, a T-shaped nut is arranged in the fixing groove, the T-shaped nut is embedded in the fixing groove and can only move along the groove direction, two supporting positioning blocks are arranged on the bottom plate in parallel, the bottom parts of the two supporting positioning blocks are respectively provided with a limiting groove corresponding to the positioning key, the two supporting positioning blocks are provided with fixing bolts which are matched and locked with the corresponding T-shaped nuts through the fixing bolts, the two supporting positioning blocks are respectively provided with grooves matched with blade profiles, the first pressing beam is positioned above the groove of the first supporting positioning block, the second pressing beam is positioned above the groove of the second supporting positioning block, one, and a pressing block acting on the surface of the blade is arranged in the mounting groove.
Description
Technical Field
The utility model relates to a frock for the blade especially relates to a large-scale hydraulic turbine blade bores centre bore positioning fixture.
Background
The blade of the large water turbine is overweight because of self weight, and the geometric dimension exceeds a common positioning frame, so that the operation is difficult when a central hole is drilled, the positioning precision is low, the drilling quality is influenced, and therefore a proper clamp is needed for reliable positioning and fixing. However, the blade has various types, variable sizes, fixed structure of a special measuring tool, poor universality, high cost, long manufacturing period, large inventory pressure and inconvenient management and use.
Therefore, a universal fixture is needed to ensure reliable positioning and fixing of the blade.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a large-scale hydraulic turbine blade bores centre bore positioning fixture is applicable to the polytypic blade, solves the special measuring tool commonality poor, problem with high costs, is convenient for pinpoint, fixed to satisfy the processing needs.
In order to achieve the purpose, the utility model adopts the following technical proposal:
a large-scale hydraulic turbine blade center hole drilling positioning fixture comprises a bottom plate, a first supporting positioning block, a second supporting positioning block, a first pressing beam and a second pressing beam, wherein a key groove and a fixing groove are formed in the bottom plate along the length direction of the bottom plate, a positioning key is arranged in the key groove, a T-shaped nut is arranged in the fixing groove, the T-shaped nut is embedded in the fixing groove and can only move along the groove direction, the first supporting positioning block and the second supporting positioning block are arranged on the bottom plate in parallel, the bottoms of the two supporting positioning blocks are respectively provided with a limiting groove corresponding to the positioning key, fixing bolts are arranged on the two supporting positioning blocks and are matched and locked with the corresponding T-shaped nuts through the fixing bolts, grooves matched with blade profiles are respectively formed in the first supporting positioning block and the second supporting positioning block, the first pressing beam is positioned above the grooves of the first supporting positioning block, and the second pressing beam is positioned above the, the two compressing beams are provided with mounting grooves on one surfaces close to the grooves, and compressing blocks acting on the surfaces of the blades are arranged in the mounting grooves.
Particularly, the pressing block is in an A shape, the head end of the pressing block is hinged to the corresponding pressing cross beam, and the two foot ends of the pressing block are spherical surfaces.
In particular, the mounting groove is in a flaring shape, and two side walls of the mounting groove limit the rotation angle of the compaction block.
Particularly, the first pressing beam and the second pressing beam are respectively fixed on the corresponding support positioning blocks through pressing bolts.
Particularly, the groove of the first support positioning block is smaller than the groove of the second support positioning block.
In particular, two sides of the two supporting and positioning blocks are respectively provided with an L-shaped supporting plate for keeping stability.
To sum up, the beneficial effects of the utility model are that, compared with the prior art, large-scale hydraulic turbine blade bores centre bore positioning fixture acts on two of blade through two supporting location piece and compression beam, reaches reliable fixed purpose, and wherein the supporting location piece of two can the translation in order to adapt to different blade shapes, and the compact heap that the flexibility is high can adapt to different blade surfaces to be applicable to multiple model blade, the commonality is good, and low cost is reliable fixed, location are convenient for process the centre bore accurately.
Drawings
Fig. 1 is a schematic structural diagram of a large-scale water turbine blade center hole drilling positioning fixture provided by an embodiment of the present invention;
3 FIG. 3 2 3 is 3 a 3 cross 3- 3 sectional 3 view 3 taken 3 at 3 A 3- 3 A 3 of 3 FIG. 3 1 3; 3
Fig. 3 is a sectional view taken at B-B in fig. 1.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Wherein the terms "first position" and "second position" are two different positions.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection or a removable connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1 to 3, the present embodiment provides a positioning fixture for drilling a central hole in a large-sized water turbine blade, which mainly includes a bottom plate 1, a first supporting and positioning block 2, a second supporting and positioning block 3, a first pressing beam 4 and a second pressing beam 5.
The bottom plate 1 is provided with a key groove 6 and a fixing groove 7 along the length direction of the bottom plate, a positioning key 8 is arranged in the key groove 6, a T-shaped nut 9 is arranged in the fixing groove 7, and the T-shaped nut 9 is embedded into the fixing groove 7 and can only move along the groove.
The first supporting and positioning block 2 and the second supporting and positioning block 3 are arranged on the bottom plate 1 in parallel, the bottoms of the two supporting and positioning blocks correspond to the positioning keys 8 and are provided with limiting grooves 10, and the two supporting and positioning blocks are provided with fixing bolts 11 and are locked by matching with corresponding T-shaped nuts 9 through the fixing bolts 11.
The first pressing beam 4 is located above the groove of the first support positioning block 2, the second pressing beam 5 is located above the groove of the second support positioning block 3, and the first pressing beam 4 and the second pressing beam 5 are fixed on the corresponding support positioning blocks through pressing bolts 13 respectively.
The two sides of the two supporting and positioning blocks are respectively provided with an L-shaped supporting plate 16 for keeping stability, so that the structural stability of the first supporting and positioning block 2 and the second supporting and positioning block 3 during moving and fixing is ensured.
To sum up, above-mentioned large-scale hydraulic turbine blade bores centre bore positioning fixture acts on two departments of blade through two support positioning piece and compress tightly the crossbeam, reaches reliable fixed purpose, and wherein the support positioning piece of two departments can the translation in order to adapt to different blade shapes, and the compact heap that the flexibility is high can adapt to different blade surfaces to be applicable to multiple model blade, the commonality is good, low cost, reliable fixed, the location is convenient for process the centre bore accurately.
The above embodiments have been merely illustrative of the basic principles and features of the present invention, and the present invention is not limited by the above embodiments, and does not depart from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (6)
1. A large-scale hydraulic turbine blade center hole drilling positioning fixture is characterized by comprising a bottom plate, a first supporting and positioning block, a second supporting and positioning block, a first pressing cross beam and a second pressing cross beam,
the bottom plate is provided with a key groove and a fixing groove along the length direction, a positioning key is arranged in the key groove, a T-shaped nut is arranged in the fixing groove, the T-shaped nut is embedded in the fixing groove and can only move along the groove direction,
the first support positioning block and the second support positioning block are arranged on the bottom plate in parallel, the bottoms of the two support positioning blocks are respectively provided with a limiting groove corresponding to the positioning key, the two support positioning blocks are provided with fixing bolts which are matched and locked with corresponding T-shaped nuts through the fixing bolts,
the blade pressing device is characterized in that grooves matched with blade profiles are formed in the first supporting and positioning block and the second supporting and positioning block respectively, the first pressing cross beam is located above the grooves of the first supporting and positioning block, the second pressing cross beam is located above the grooves of the second supporting and positioning block, mounting grooves are formed in one surfaces, close to the grooves, of the two pressing cross beams, and pressing blocks acting on the surfaces of blades are arranged in the mounting grooves.
2. The large-scale hydraulic turbine blade center hole drilling positioning fixture as claimed in claim 1, characterized in that: the pressing block is A-shaped, the head end of the pressing block is hinged to the corresponding pressing cross beam, and the two foot ends of the pressing block are spherical surfaces.
3. The large-scale hydraulic turbine blade center hole drilling positioning fixture as claimed in claim 2, characterized in that: the mounting groove is in a flaring shape, and two side walls of the mounting groove limit the rotation angle of the pressing block.
4. The large-scale hydraulic turbine blade center hole drilling positioning fixture as claimed in claim 1, characterized in that: the first pressing cross beam and the second pressing cross beam are fixed on the corresponding supporting and positioning blocks through pressing bolts respectively.
5. The large-scale hydraulic turbine blade center hole drilling positioning fixture as claimed in claim 1, characterized in that: the groove of the first supporting and positioning block is smaller than the groove of the second supporting and positioning block.
6. The large-scale hydraulic turbine blade center hole drilling positioning fixture as claimed in claim 1, characterized in that: and the two sides of the two supporting and positioning blocks are respectively provided with an L-shaped supporting plate for keeping stability.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921200966.4U CN210615814U (en) | 2019-07-27 | 2019-07-27 | Large-scale hydraulic turbine blade bores centre bore positioning fixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921200966.4U CN210615814U (en) | 2019-07-27 | 2019-07-27 | Large-scale hydraulic turbine blade bores centre bore positioning fixture |
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| CN210615814U true CN210615814U (en) | 2020-05-26 |
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| CN201921200966.4U Active CN210615814U (en) | 2019-07-27 | 2019-07-27 | Large-scale hydraulic turbine blade bores centre bore positioning fixture |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112247613A (en) * | 2020-09-14 | 2021-01-22 | 江苏大学 | Clamping tool for machining arc of end face of stationary blade of steam turbine and using method of clamping tool |
| CN113369808A (en) * | 2021-05-28 | 2021-09-10 | 武汉一冶钢结构有限责任公司 | Machining method for connecting hole of wind tunnel guide vane |
-
2019
- 2019-07-27 CN CN201921200966.4U patent/CN210615814U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112247613A (en) * | 2020-09-14 | 2021-01-22 | 江苏大学 | Clamping tool for machining arc of end face of stationary blade of steam turbine and using method of clamping tool |
| CN113369808A (en) * | 2021-05-28 | 2021-09-10 | 武汉一冶钢结构有限责任公司 | Machining method for connecting hole of wind tunnel guide vane |
| CN113369808B (en) * | 2021-05-28 | 2022-07-15 | 武汉一冶钢结构有限责任公司 | Machining method for wind tunnel guide vane connecting hole |
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