CN215334740U - Flexible connecting sleeve for electric-displacement linear converter and guide valve piston - Google Patents
Flexible connecting sleeve for electric-displacement linear converter and guide valve piston Download PDFInfo
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- CN215334740U CN215334740U CN202121587087.9U CN202121587087U CN215334740U CN 215334740 U CN215334740 U CN 215334740U CN 202121587087 U CN202121587087 U CN 202121587087U CN 215334740 U CN215334740 U CN 215334740U
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Abstract
The utility model discloses a flexible connecting sleeve of an electric-displacement linear converter and a guide valve piston, which comprises: the lower part of the converter is provided with a connecting body; the top of the guide valve piston is provided with a cup-shaped structure; the connecting sleeve comprises a connecting cover and a connecting body, a connecting screw rod is arranged between the connecting cover and the connecting body, the connecting cover is fixed at the lower end of the connecting screw rod through a locking nut, and the upper end of the connecting screw rod is connected with the lower end of the connecting body through threads; the bottom of the guide valve piston penetrates through the bottom of the connecting body, and the cup-shaped structure is positioned inside the connecting body; the utility model provides a flexible connecting sleeve of an electric-displacement linear converter and a guide valve piston, which can be used as the flexible connection of the electric-displacement linear converter (commonly called as a centering mechanism) with a ball screw pair of a large main pressure distributing valve of a water turbine governor and the guide valve piston and has excellent universal and follow-up performances.
Description
Technical Field
The utility model belongs to the technical field of electromechanics, and particularly relates to a flexible connecting sleeve for an electric-displacement linear converter and a guide valve piston.
Background
A traditional electric-displacement linear converter and a guide valve piston connecting sleeve are provided with a base spring in a guide valve piston bushing cylinder body to ensure that a guide valve piston flexibly follows up, an upper universal connector needs to balance the influence of the guide valve base spring force on follow-up control precision, a universal spring is additionally arranged to offset, a connecting part is pure rigid point-to-point connection, and the spring force is auxiliary universal. This design mechanism is very complicated, the structure size is big, spare part quantity is many, structural guide valve bottom must reserve sufficient space and set up the base spring, the unable independence of executor cylinder body and miniaturized design, and the adjustment is very difficult, the mechanical practitioner who does not have the special training of several months hardly independently adjusts well, must be that the mechanical engineer of experience old dawn accompanies with electrical debugging personnel together go on-the-spot debugging, electrical debugging personnel hardly go on a business alone and adjust to target in place fundamentally, very big technical obstacle and economic cost have been increased for the company.
SUMMERY OF THE UTILITY MODEL
The utility model provides a flexible connecting sleeve of an electric-displacement linear converter and a guide valve piston, which enables miniaturization, standardization and modularization of a main pressure distribution valve in design to be possible, and greatly improves the convenience of zero adjustment.
The utility model is thus realized, a flexible connection sleeve of an electric-displacement linear transducer and a pilot valve piston, comprising:
the lower part of the converter is provided with a connecting body;
the top of the guide valve piston is provided with a cup-shaped structure;
the connecting sleeve comprises a connecting cover and a connecting body, a connecting screw rod is arranged between the connecting cover and the connecting body, the connecting cover is fixed at the lower end of the connecting screw rod through a locking nut, and the upper end of the connecting screw rod is connected with the lower end of the connecting body through threads; the bottom of the guide valve piston penetrates through the bottom of the connecting body, and the cup-shaped structure is positioned inside the connecting body;
a core plug is embedded in the cup-shaped structure, and the top of the core plug is abutted against the bottom of the connecting screw rod; the outer wall of the cup-shaped structure is sleeved with a supporting spring, the lower end of the supporting spring is abutted against the bottom of the connecting body, and the upper end of the supporting spring is abutted against an outer display platform at the top of the cup-shaped structure.
Further, the connecting cover is connected with the connecting body through a bolt.
Furthermore, a gap is arranged between the bottom of the outer side of the cup-shaped structure and the bottom of the inner side of the connecting body.
Further, the gap is 2-3 mm.
Further, the top of the core plug is hemispherical, and the bottom of the core plug is cylindrical.
Furthermore, the bottom of the core plug is embedded in the cup-shaped structure, and the top of the core plug extends out of the cup-shaped structure and is in point contact with the plane point at the bottom of the connecting screw rod.
Furthermore, the lower end of the connecting body is provided with a fine tooth inner thread, and the upper end of the connecting screw rod is provided with a fine tooth outer thread.
Compared with the prior art, the utility model has the beneficial effects that: the utility model provides a flexible connecting sleeve of an electric-displacement linear converter and a guide valve piston, which can be used as the flexible connection of the electric-displacement linear converter (commonly called as a middle mechanism) with a ball screw pair of a large-scale main distributing valve of a water turbine governor and the guide valve piston, has excellent universal and follow-up performances, and the spring force is used as the internal force in the connecting sleeve to be mutually offset without additional mechanism balance. The connecting device is simple and exquisite, is very convenient to adjust, and replaces the traditional rigid guide valve piston connecting mode with complex structure and complex adjustment.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a cross-sectional view of the present invention;
in the figure: 1-converter, 2-connection body, 3-connection cover, 4-connection body, 5-support spring, 6-connection screw, 7-locking nut, 8-core plug, 9-guide valve piston, 10-cup structure and 11-connection sleeve.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.
In the description of the present invention, it is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships illustrated in the drawings, and are used merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention. Further, in the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
Referring to fig. 1-2, the present invention provides a technical solution: the utility model is thus realized, a flexible connection sleeve of an electric-displacement linear transducer and a pilot valve piston, comprising:
the converter comprises a converter 1, wherein a coupling body 2 is arranged at the lower part of the converter 1;
a guide valve piston 9, wherein a cup-shaped structure 10 is arranged at the top of the guide valve piston 9;
the connecting sleeve 11 comprises a connecting cover 3 and a connecting body 4, a connecting screw rod 6 is arranged between the connecting cover 3 and the connecting body 2, the connecting cover 3 is fixed at the lower end of the connecting screw rod 6 through a locking nut 7, and the upper end of the connecting screw rod 6 is in threaded connection with the lower end of the connecting body 2; the bottom of the guide valve piston 9 penetrates through the bottom of the connecting body 4, and the cup-shaped structure 10 is positioned inside the connecting body 4;
a core plug 8 is embedded in the cup-shaped structure 10, and the top of the core plug 8 is abutted against the bottom of the connecting screw rod 6; the outer wall of the cup-shaped structure 10 is sleeved with a supporting spring 5, the lower end of the supporting spring 5 is abutted against the bottom of the connecting body 4, and the upper end of the supporting spring 5 is abutted against an outer display platform at the top of the cup-shaped structure 10.
In this embodiment, the connecting cover 3 is connected to the connecting body 4 by bolts, and a gap is provided between the bottom of the outer side of the cup-shaped structure 10 and the bottom of the inner side of the connecting body 4, where the gap is 2-3 mm. The top of the core plug 8 is hemispherical, the bottom of the core plug 8 is cylindrical, the bottom of the core plug 8 is embedded in the cup-shaped structure 10, and the top of the core plug 8 extends out of the cup-shaped structure 10 and is in point contact with the plane point at the bottom of the connecting screw 6. The lower end of the connecting body 2 is provided with a fine tooth inner thread, and the upper end of the connecting screw rod 6 is provided with a fine tooth outer thread.
Specifically, the utility model provides a flexible electric-displacement linear converter 1 and a connecting sleeve 11 of a guide valve piston 9, as shown in figure 1, a ball screw in a middle cylinder is connected with a connecting body 2 to do upper and lower linear limited motion under the limit of an upper supporting block and a lower supporting block in the cylinder, and the upper supporting block and the lower supporting block respectively return to an upper dead point and a lower dead point under the action of spring force, so that the connecting body 2 can be well aligned with the point position.
The center of the lower part of the connecting body 2 is provided with a fine-tooth inner thread, a connecting screw rod 6 is connected with a fine-tooth outer thread in the connecting body 2, the position of the connecting screw rod can be accurately adjusted up and down, a connecting cover 3 at the top of a connecting sleeve 11 of a guide valve piston 9 is connected and locked with an upper adjusting screw rod through a locking nut 7, a core plug 8 is embedded in an inner groove of a circular cup-shaped structure 10 above the guide valve piston 9, the upper part of the core plug 8 is hemispherical, and point contact with the plane point of the lower part of the adjusting screw rod is guaranteed, so that high linearity of mechanism movement is guaranteed.
The outer platform in cup structure 10 upper portion on guide valve piston 9 upper portion supports in the inboard bottom with connector 4 through supporting universal spring, guide valve piston 9 is held up to the spring force, make core stopper 8 go up the top in terminal surface under connecting screw 6, make in the design lead the lower bottom of cup structure 10 on guide valve piston 9 upper portion and guarantee with connector 4 inboard bottom have 2 ~ 3mm clearance, thereby make the fine realization flexonics of adapter sleeve 11 and guide valve piston 9, excellent universal and follow-up performance has, the installation is adjusted the back, connector 4 passes through fixing bolt with connecting lid 3 and fixes.
The upper part of the guide valve piston 9 is designed into a cup-shaped structure 10, an independent core plug 8 is arranged, the upper part of the core plug 8 is hemispherical, and the point contact with the plane point at the lower part of the adjusting screw rod is ensured, so that the high linearity of the mechanism motion is ensured.
Set up in the connector 4 and support universal spring, rely on spring force to hold up guide valve piston 9, make core plug 8 push up terminal surface under connecting screw 6 constantly under the effect of spring force extrusion force, and make guide valve piston 9 upper portion cup structure 10 go to the bottom and guarantee with connector 4 inboard bottom in the design and have 2 ~ 3mm clearance, thereby make the fine realization flexonics of adapter sleeve 11 and guide valve piston 9, and place the adapter sleeve 11 in supporting universal spring, its spring force is the internal force in whole operation in-process, it is upper and lower mutual offset, need not other mechanisms and offset this spring force.
The connecting cover 3 is connected with the upper adjusting screw rod through the locking nut 7, after the installation and adjustment are completed, the connecting cover 3 and the connecting body 4 are fixed through the fixing bolt, the structure is simple and small, and the middle position adjustment is very convenient.
In this embodiment, the connection cover 3 on the top of the connection sleeve 11 is connected with the upper adjusting screw through a locking nut 7, the core plug 8 is embedded in an inner groove of a circular cup-shaped structure 10 above the guide valve piston 9, the upper part of the core plug 8 is hemispherical and is guaranteed to be in contact with a plane point on the lower part of the adjusting screw, an outer platform on the upper part of the cup-shaped structure 10 on the upper part of the guide valve piston 9 is supported at the bottom of the inner side of the connection body 4 through a supporting universal spring, and after the adjustment is finished, the locking nut 7 is locked, and the connection body 4 and the connection cover 3 are screwed and fixed through a fixing bolt.
The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. A flexible connection sleeve for an electric-to-displacement linear transducer and a pilot valve piston, comprising:
the lower part of the converter is provided with a connecting body;
the top of the guide valve piston is provided with a cup-shaped structure;
the connecting sleeve comprises a connecting cover and a connecting body, a connecting screw rod is arranged between the connecting cover and the connecting body, the connecting cover is fixed at the lower end of the connecting screw rod through a locking nut, and the upper end of the connecting screw rod is connected with the lower end of the connecting body through threads; the bottom of the guide valve piston penetrates through the bottom of the connecting body, and the cup-shaped structure is positioned inside the connecting body;
a core plug is embedded in the cup-shaped structure, and the top of the core plug is abutted against the bottom of the connecting screw rod; the outer wall of the cup-shaped structure is sleeved with a supporting spring, the lower end of the supporting spring is abutted against the bottom of the connecting body, and the upper end of the supporting spring is abutted against an outer display platform at the top of the cup-shaped structure.
2. Flexible connecting sleeve according to claim 1, characterized in that: the connecting cover is connected with the connecting body through a bolt.
3. Flexible connecting sleeve according to claim 1, characterized in that: a gap is arranged between the bottom of the outer side of the cup-shaped structure and the bottom of the inner side of the connecting body.
4. Flexible connecting sleeve according to claim 3, characterized in that: the gap is 2-3 mm.
5. Flexible connecting sleeve according to claim 1, characterized in that: the top of the core plug is hemispherical, and the bottom of the core plug is cylindrical.
6. Flexible connecting sleeve according to claim 5, characterized in that: the bottom of the core plug is embedded in the cup-shaped structure, and the top of the core plug extends out of the cup-shaped structure and is in point contact with the plane point at the bottom of the connecting screw rod.
7. Flexible connecting sleeve according to claim 1, characterized in that: the lower end of the connecting body is provided with a fine-tooth inner thread, and the upper end of the connecting screw rod is provided with a fine-tooth outer thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121587087.9U CN215334740U (en) | 2021-07-13 | 2021-07-13 | Flexible connecting sleeve for electric-displacement linear converter and guide valve piston |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121587087.9U CN215334740U (en) | 2021-07-13 | 2021-07-13 | Flexible connecting sleeve for electric-displacement linear converter and guide valve piston |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215334740U true CN215334740U (en) | 2021-12-28 |
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ID=79567655
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121587087.9U Active CN215334740U (en) | 2021-07-13 | 2021-07-13 | Flexible connecting sleeve for electric-displacement linear converter and guide valve piston |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215334740U (en) |
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2021
- 2021-07-13 CN CN202121587087.9U patent/CN215334740U/en active Active
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