CN211639723U - Key pulling tool for guide vane key - Google Patents
Key pulling tool for guide vane key Download PDFInfo
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- CN211639723U CN211639723U CN201921987710.2U CN201921987710U CN211639723U CN 211639723 U CN211639723 U CN 211639723U CN 201921987710 U CN201921987710 U CN 201921987710U CN 211639723 U CN211639723 U CN 211639723U
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- guide vane
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- key pulling
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Abstract
The utility model relates to a key pulling tool for a guide vane key, which comprises a cylinder body with a cavity and a key pulling body for fixing the guide vane key, wherein the key pulling body is arranged in the cavity and can move along the axis direction of the cylinder body, the top of the cylinder body is provided with a sealing cover, and the sealing cover is provided with a through hole; the upper end of the key pulling body is provided with a screw rod extending upwards, and the screw rod penetrates through the through hole and is matched with the nut; the guide vane key is characterized in that the key pulling body is further provided with a guide hole for the guide vane key to be inserted in the axis direction of the key pulling body and a limiting table arranged at the bottom of the guide hole, so that the limiting table can rotate after being inserted into the guide hole, and the moving range of the guide vane key in the axis direction can be limited through the limiting table. The guide vane key dismantling device solves the problems that a guide vane key dismantling is troublesome and labor intensity is high in the prior art.
Description
Technical Field
The utility model relates to an overhaul appurtenance technical field, concretely relates to a pull out key instrument for stator key.
Background
The guide vane key is a connecting piece used for connecting a guide vane and a shaft on the water turbine generator set, and the guide vane key is usually required to be detached during maintenance and overhaul.
Based on the L-shaped structure of the guide vane key, the conventional key pulling tool is difficult to effectively remove the guide vane key from the key groove. Therefore, part of the maintenance personnel choose to use the way of knocking to remove the guide vane key. However, this method has the following problems: firstly, the key is easy to damage, and the economy is poor; secondly, the labor intensity is high, and especially when the guide vane key is fixed tightly, the guide vane key is difficult to pull down, so that the working time is increased, and the working efficiency is reduced.
Aiming at the problems of troublesome dismantling and high labor intensity of guide vane keys in the prior art, a more reasonable technical scheme is required to be provided so as to solve the technical problems existing at present.
SUMMERY OF THE UTILITY MODEL
The utility model provides a pull out key instrument for stator key to solve the stator key that exists among the prior art and demolish troublesome problem.
In order to realize the above effect, the utility model discloses a technical scheme does:
a key pulling tool for a guide vane key comprises a cylinder body with a cavity and a key pulling body for fixing the guide vane key, wherein the key pulling body is arranged in the cavity and can move along the axial direction of the cylinder body, a sealing cover is arranged at the top of the cylinder body, and a through hole is formed in the sealing cover;
the upper end of the key pulling body is provided with a screw rod extending upwards, and the screw rod penetrates through the through hole and is matched with the nut; the guide vane key is characterized in that the key pulling body is further provided with a guide hole for the guide vane key to be inserted in the axis direction of the key pulling body and a limiting table arranged at the bottom of the guide hole, so that the limiting table can rotate after being inserted into the guide hole, and the moving range of the guide vane key in the axis direction can be limited through the limiting table.
Optionally, the key pulling tool further comprises a bolt, a guide groove penetrating along the axial direction is formed in the side wall of the key pulling body, a threaded hole matched with the bolt is formed in the side wall of the barrel, and the bolt penetrates through the threaded hole and abuts against the guide groove to guide the key pulling body to move along the axial direction.
Optionally, an avoiding port for avoiding the key pulling body is arranged on the cylinder body, and the avoiding port is arranged at a position opposite to the guide hole.
Optionally, a flange protruding towards the axial lead of the cylinder body is arranged on the inner wall of the cylinder body and used for resisting the key pulling body.
Optionally, the edge of the top of the key pulling body is provided with a round angle, and the bottom surface of the flange is formed into an arc-shaped surface matched with the round angle.
Optionally, the cover is welded on the top of the barrel; alternatively, the closure is integrally formed with the barrel.
Optionally, the end of the screw rod is welded on the top of the key pulling body; or the screw rod and the key pulling body are integrally formed.
Optionally, the axis of the guide hole is offset from the axis of the cylinder.
Optionally, the thickness of the closure is greater than the thickness of the cartridge.
Optionally, a washer is provided between the nut and the closure.
Through above-mentioned technical scheme, the stator key can rotate after inserting the guiding hole to keep the position for pulling out the key body through spacing platform, because the screw rod can remove along the through-hole, at this moment, can pass through spanner (air wrench, electric spanner) or other anchor clamps clamping nut, thereby make pull out the key body and move towards closing cap department, can drive the stator key and upwards remove together this moment, until the stator key breaks away from the keyway, from this the realization to the demolishment of stator key. The guide vane key is slowly pulled out by using the pulling mode, so that the damage to the guide vane key can be reduced, the labor intensity can be reduced, and the disassembly efficiency is improved. In addition, after the nut is disassembled from the screw rod, the barrel body and the key pulling body can be disassembled, so that the maintenance and the part replacement are convenient, and the economy of the key pulling tool is improved; the key pulling body with different specifications can be replaced according to requirements, so that the key pulling tool is suitable for guide vane keys with different structures and specifications, and the application range of the key pulling tool is widened. And the key pulling tool has the advantages of simple structure, convenient operation, quick disassembly and better practicability.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only show some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a key pulling tool for a guide vane key provided by the present invention;
fig. 2 is a schematic structural diagram of a key pulling body in the key pulling tool for the guide vane key provided by the present invention;
fig. 3 is a three-dimensional structure diagram of a key pulling body in the key pulling tool for the guide vane key provided by the present invention;
fig. 4 is a schematic structural diagram of a cylinder in a key pulling tool for a guide vane key provided by the present invention.
In the above drawings, the meaning of each reference numeral is:
1-guide vane key, 2-cylinder, 21-chamber, 22-flange, 23-avoidance opening, 3-sealing cover, 4-key pulling body, 41-guide hole, 42-limit table, 43-guide groove, 51-screw, 52-nut, 53-washer and 6-bolt.
Detailed Description
The present invention will be further explained with reference to the drawings and the embodiments.
It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. Specific structural and functional details disclosed herein are merely illustrative of example embodiments of the invention. The present invention may, however, be embodied in many alternate forms and should not be construed as limited to the embodiments set forth herein.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments of the invention. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises," "comprising," "includes," and/or "including," when used herein, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, numbers, steps, operations, elements, components, and/or groups thereof.
It should also be noted that, in some alternative implementations, the functions/acts noted may occur out of the order noted in the figures. For example, two figures shown in succession may, in fact, be executed substantially concurrently, or the figures may sometimes be executed in the reverse order, depending upon the functionality/acts involved.
In the following description, specific details are provided to facilitate a thorough understanding of example embodiments. However, it will be understood by those of ordinary skill in the art that the example embodiments may be practiced without these specific details. For example, systems may be shown in block diagrams in order not to obscure the examples in unnecessary detail. In other instances, well-known processes, structures and techniques may be shown without unnecessary detail in order to avoid obscuring example embodiments.
The utility model provides an among the concrete implementation mode, provide a pull out key instrument for stator key, can cooperate spanner (air wrench, electric spanner) to demolish stator key 1 from the keyway, of course, should pull out key instrument and can also demolish other L type parts. Fig. 1 to 4 show one specific embodiment thereof.
As shown in fig. 1 to 4, a key pulling tool for a guide vane key disclosed in this embodiment includes a cylinder 2 having a cavity 21 and a key pulling body 4 for fixing the guide vane key 1, the key pulling body 4 is disposed in the cavity 21 and is movable along an axial direction of the cylinder 2, a sealing cover 3 is disposed on a top of the cylinder 2, and a through hole is disposed on the sealing cover 3; the upper end of the key-pulling body 4 is provided with a screw 51 extending upwards, the screw 51 passes through the through hole and cooperates with the nut 52, thus, the nut 52 is abutted against the top of the cover 3, thereby limiting the position of the key-pulling body 4 relative to the cylinder 2; the key pulling body 4 is further provided with a guide hole 41 for the guide vane key 1 to be inserted along the axial direction of the key pulling body 4 and a limit table 42 arranged at the bottom of the guide hole 41, so that the limit table 42 can rotate after being inserted into the guide hole 41, and the limit table 42 can limit the moving range of the guide vane key 1 in the axial direction.
Through the technical scheme, the guide vane key 1 can rotate after being inserted into the guide hole 41, and the position of the guide vane key body 4 is kept relative to the position of the key pulling body through the limiting table 42, and the screw 51 can move along the through hole, so that the nut 52 can be clamped through a wrench (a pneumatic wrench or an electric wrench) or other fixtures, the key pulling body 4 moves towards the sealing cover 3, the guide vane key 1 can be driven to move upwards together at the moment until the guide vane key 1 is separated from the key groove, and the guide vane key 1 is detached. By means of the pulling mode, the guide vane key 1 is slowly pulled out, damage to the guide vane key 1 can be reduced, labor intensity can be reduced, and dismounting efficiency is improved. In addition, after the nut 52 is detached from the screw 51, the barrel 2 and the key pulling body 4 can be detached, so that the maintenance and the part replacement are convenient, and the economy of the key pulling tool is improved; the key pulling body 4 with different specifications can be replaced according to the requirements, so that the key pulling tool is suitable for guide vane keys 1 with different structures and specifications, and the application range of the key pulling tool is widened. And the key pulling tool has the advantages of simple structure, convenient operation, quick disassembly and better practicability.
As shown in fig. 2 and 3, in a specific embodiment provided by the present invention, the key pulling tool may further include a bolt 6, the sidewall of the key pulling body 4 is provided with a guide groove 43 penetrating along the axial direction, the sidewall of the barrel 2 is provided with a threaded hole matching with the bolt 6, and the bolt 6 passes through the threaded hole and abuts against the guide groove 43 to guide the key pulling body 4 to move along the axial direction. The guide groove 43 can also guide the key pulling body 4 to move quickly along the axial direction, thereby improving the removal efficiency of the guide vane key 1. Based on this kind of detachable connected mode, still be convenient for later maintenance and the part of renewal, possess better practicality.
The utility model discloses an among the concrete implementation mode, as shown in FIG. 4, be equipped with on barrel 2 and be used for dodging pull out the mouth 23 of dodging of key body 4, dodge mouthful 23 set up in with the position that guiding hole 41 is relative to make pull out key body 4 and stator key 1 cooperate fast accurately, improve pull out key efficiency then. To dodging the specification and the shape of mouth 23, can be according to the nimble setting of actual demand, the utility model discloses do not restrict to this.
In an embodiment provided by the present invention, as shown in fig. 1, a flange 22 protruding toward the axial line of the cylinder 2 is disposed on the inner wall of the cylinder 2 for blocking the key-pulling body 4. In this way, the range of movement of the key body 4 can be limited, thereby reducing the impact on the cover 3.
As shown in fig. 1, in the present invention, the edge at the top of the key-pulling body 4 is provided with a round corner, and the bottom surface of the flange 22 is formed into an arc-shaped surface adapted to the round corner. Thus, friction against the inner wall of the cylinder 2 can be reduced, and the contact area of the key-pulling body 4 and the flange 22 can be increased, thereby reducing impact and ensuring the service life of the cylinder 2.
In order to ensure the strength of the connection between the can 2 and the closure 3, the closure 3 may be welded to the top of the can 2, as shown in fig. 1. The utility model discloses in, adopt the mode of full weld to connect barrel 2 and closing cap 3 and become a whole, the local of 3 all contacts of barrel 2 and closing cap that promptly all carries out the fusion welding to guarantee joint strength between them. In addition, as shown in fig. 4, the cover 3 may be integrally formed with the barrel 2, so as to ensure the connection strength between the cover 3 and the barrel 2.
In the present invention, the end of the screw 51 is welded to the top of the key-pulling body 4, and the cylinder 2 and the cover 3 are connected into a whole by the full-welding method, that is, fusion welding is performed on all the contact places of the screw 51 and the key-pulling body 4, so as to ensure the connection strength between them. In addition, the screw 51 and the key-pulling body 4 may be integrally formed, so as to ensure the connection strength between the screw 51 and the key-pulling body 4.
As shown in fig. 1, in a specific embodiment provided by the utility model, the axial lead of guiding hole 41 is skew the axial lead of barrel 2, like this, can increase spacing 42 in the size of radial direction, increase spacing 42 then and stator key 1's area of contact, improve the spacing reliability of stator key 1 in the axial direction.
In order to ensure the service life of the cover 3, the thickness of the cover 3 is larger than that of the barrel 2, thereby reducing the deformation generated when the key-pulling body 4 impacts the cover 3.
In an embodiment of the present invention, a washer 53 is disposed between the nut 52 and the cover 3, so as to reduce the wear of the nut 52 on the end surface of the cover 3.
The above embodiments are just examples of the present invention, but the present invention is not limited to the above alternative embodiments, and those skilled in the art can obtain other various embodiments by arbitrarily combining the above embodiments, and any one can obtain other various embodiments by the teaching of the present invention. The above detailed description should not be taken as limiting the scope of the invention, which is defined in the following claims, and which can be used to interpret the claims.
Claims (10)
1. The key pulling tool for the guide vane key is characterized by comprising a cylinder body (2) with a cavity (21) and a key pulling body (4) for fixing the guide vane key (1), wherein the key pulling body (4) is arranged in the cavity (21) and can move along the axis direction of the cylinder body (2), a sealing cover (3) is arranged at the top of the cylinder body (2), and a through hole is formed in the sealing cover (3);
the upper end of the key pulling body (4) is provided with a screw rod (51) extending upwards, and the screw rod (51) penetrates through the through hole and is matched with a nut (52); the guide vane key is characterized in that the key pulling body (4) is further provided with a guide hole (41) for the guide vane key (1) to be inserted in the axis direction of the key pulling body (4) and a limiting table (42) arranged at the bottom of the guide hole (41), so that the limiting table (42) can rotate after being inserted into the guide hole (41), and the movement range of the guide vane key (1) in the axis direction can be limited through the limiting table (42).
2. The key pulling tool for the guide vane key according to claim 1, further comprising a bolt (6), wherein the side wall of the key pulling body (4) is provided with a guide groove (43) penetrating along the axial direction, the side wall of the cylinder (2) is provided with a threaded hole matched with the bolt (6), and the bolt (6) penetrates through the threaded hole and abuts against the guide groove (43) to guide the key pulling body (4) to move along the axial direction.
3. The key pulling tool for guide vane keys according to claim 1, wherein an avoidance port (23) for avoiding the key pulling body (4) is provided on the cylinder (2), and the avoidance port (23) is provided at a position opposite to the guide hole (41).
4. The key pulling tool for guide vane keys as claimed in claim 1, wherein the inner wall of the cylinder (2) is provided with a flange (22) protruding towards the axial lead of the cylinder (2) for resisting against the key pulling body (4).
5. The key pulling tool for guide vane keys as claimed in claim 4, wherein the edge of the top of the key pulling body (4) is provided with a round angle, and the bottom surface of the flange (22) is formed into an arc-shaped surface corresponding to the round angle.
6. The key pulling tool for guide vane key according to claim 1, wherein the cover (3) is welded on top of the cylinder (2); or the sealing cover (3) and the cylinder body (2) are integrally formed.
7. The key pulling tool for guide vane key according to claim 1, wherein the end of the screw (51) is welded to the top of the key pulling body (4); or the screw rod (51) and the key pulling body (4) are integrally formed.
8. The key pulling tool for guide vane keys according to any one of claims 1 to 7, wherein the axial line of the guide hole (41) is offset from the axial line of the cylinder (2).
9. The key pulling tool for guide vane keys according to any one of claims 1 to 7, wherein the thickness of the cover (3) is greater than the thickness of the cylinder (2).
10. The key pulling tool for guide vane keys according to any one of claims 1 to 7, characterized in that a washer (53) is provided between the nut (52) and the cover (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921987710.2U CN211639723U (en) | 2019-11-15 | 2019-11-15 | Key pulling tool for guide vane key |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921987710.2U CN211639723U (en) | 2019-11-15 | 2019-11-15 | Key pulling tool for guide vane key |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211639723U true CN211639723U (en) | 2020-10-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921987710.2U Active CN211639723U (en) | 2019-11-15 | 2019-11-15 | Key pulling tool for guide vane key |
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| Country | Link |
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| CN (1) | CN211639723U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114952710A (en) * | 2022-05-25 | 2022-08-30 | 广东省源天工程有限公司 | Manual and hydraulic dual-purpose 7-type key dismounting device |
-
2019
- 2019-11-15 CN CN201921987710.2U patent/CN211639723U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114952710A (en) * | 2022-05-25 | 2022-08-30 | 广东省源天工程有限公司 | Manual and hydraulic dual-purpose 7-type key dismounting device |
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Address after: No.7 Tianyun Road, high tech Zone, Chengdu, Sichuan 610000 Patentee after: Guoneng Daduhe maintenance and installation Co.,Ltd. Address before: No.7 Tianyun Road, high tech Zone, Chengdu, Sichuan 610000 Patentee before: GUODIAN DADUHE MAINTENANCE & INSTALLATION Co.,Ltd. |