CN220869995U - Linear motor shaft assembly - Google Patents
Linear motor shaft assembly Download PDFInfo
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- CN220869995U CN220869995U CN202322920145.0U CN202322920145U CN220869995U CN 220869995 U CN220869995 U CN 220869995U CN 202322920145 U CN202322920145 U CN 202322920145U CN 220869995 U CN220869995 U CN 220869995U
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- screw rod
- hollow shaft
- screw
- linear motor
- limiting cavity
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Abstract
The utility model discloses a linear motor shaft assembly, which comprises a hollow shaft and a screw rod; the bolt piece is connected between the hollow shaft and the screw rod and used for fixing the hollow shaft and the screw rod; the code disc is connected to one side, far away from the screw rod, of the bolt piece; and the screw rod is provided with a glue storage groove. The screw rod and the hollow shaft are in interference tight fit, concentricity of the transmission shaft is guaranteed, the screw type glue storage groove is formed in the surface of the connecting rod, cylindrical fixing glue is added in the glue storage groove, axial and radial binding force after the screw rod and the hollow shaft are matched is increased, the screw rod and the hollow shaft are further fastened through the fixing screw penetrating through the hollow shaft to be fixed with the connecting rod, the hollow shaft is prevented from loosening, structural reliability is improved, reliability of the matching of the hollow shaft and the screw rod is guaranteed, and meanwhile operation difficulty is reduced.
Description
Technical Field
The utility model belongs to the technical field of motors, and particularly relates to a linear motor shaft assembly.
Background
In some working states of the motor, linear motion is needed, for example, in a wind driven generator, by fixing a screw rod shaft with a threaded structure on a hollow shaft of a rotor, rotary motion can be converted into linear motion, and the linear motion is smoothly conveyed into a hydraulic motor to realize power generation.
At present, the existing connection mode of the screw shaft and the hollow shaft is generally fixed through a limiting block and a limiting groove or connected through a bolt, but after the screw shaft rotates for a long time, the position of the screw shaft is easily deviated due to abrasion and other reasons, so that the concentricity of the screw shaft and the hollow shaft is influenced, and the stability of the screw shaft is influenced.
Disclosure of utility model
The object of the present utility model is to solve the drawbacks of the prior art, including: hollow shaft and screw rod; the bolt piece is connected between the hollow shaft and the screw rod and used for fixing the hollow shaft and the screw rod; the code disc is connected to one side, far away from the screw rod, of the bolt piece; and the screw rod is provided with a glue storage groove.
Preferably, the hollow shaft comprises a shaft body, a first limiting cavity, a second limiting cavity and a third limiting cavity are formed in the shaft body, and the second limiting cavity is located between the first limiting cavity and the third limiting cavity.
Preferably, the screw rod comprises a screw rod main body, one end of the screw rod main body is connected with a connecting rod, and a thread groove is formed in the connecting rod.
Preferably, the bolt piece comprises a set screw, one end of the set screw is connected with the connecting block, and the connecting block is detachably connected with the code disc.
Preferably, the diameter of the connecting rod is smaller than that of the screw rod main body, and the glue storage groove is formed in the connecting rod.
Preferably, the connecting rod is in interference fit with the first limiting cavity, and the thread groove is matched with the fixing screw.
Preferably, the fixing screw is matched with the second limiting cavity, and the connecting block is matched with the third limiting cavity.
Preferably, the glue storage groove adopts a thread groove.
Preferably, the inner diameter of the hollow shaft is smaller than the diameter of the screw rod main body, and the outer diameter of the hollow shaft is larger than the diameter of the screw rod main body.
Preferably, the length of the first limiting cavity is the same as that of the connecting rod.
The technical scheme has the following advantages or beneficial effects:
According to the utility model, the concentricity of the transmission shaft is ensured by adopting interference tight fit of the screw rod and the hollow shaft, the spiral glue storage groove is formed in the surface of the connecting rod, the cylindrical fixed glue is added in the glue storage groove, the axial and radial binding force of the screw rod and the hollow shaft after being matched is increased, the screw rod and the hollow shaft are further fastened by penetrating the hollow shaft through the fixing screw to be fixed with the connecting rod, the loosening of the hollow shaft is prevented, the structural reliability is increased, the reliability of the matching of the hollow shaft and the screw rod is ensured, and meanwhile, the operation difficulty is reduced.
Drawings
FIG. 1 is a schematic view of a linear motor shaft assembly according to an embodiment of the present utility model;
FIG. 2 is a cross-sectional view of a linear motor shaft assembly according to one embodiment of the present utility model;
FIG. 3 is a schematic view of the hollow spindle of the linear motor shaft assembly of FIG. 1;
FIG. 4 is a schematic view of the structure of the lead screw of the linear motor shaft assembly of FIG. 1;
FIG. 5 is a schematic view of the structure of the bolt member of the linear motor shaft assembly of FIG. 1;
Fig. 6 is an enlarged view of a portion of the linear motor shaft assembly of fig. 2 at a.
Legend description:
1. a hollow shaft; 2. a screw rod; 3. a bolt member; 4. a code wheel; 5. a glue storage groove; 101. a shaft body; 102. a first spacing cavity; 103. the second limiting cavity; 104. a third limiting cavity; 201. a screw main body; 202. a connecting rod; 203. a thread groove; 31. a set screw; 32. and (5) connecting a block.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
As shown in fig. 1 to 6, a linear motor shaft assembly of the present utility model includes: a hollow shaft 1 and a screw rod 2; the bolt 3 is connected between the hollow shaft 1 and the screw rod 2, and the bolt 3 is used for fixing the hollow shaft 1 and the screw rod 2; the code disc 4 is connected to one side of the bolt 3, which is far away from the screw rod 2; the screw rod 2 is provided with the glue storage groove 5, the glue storage groove 5 adopts a thread groove, specifically, the screw rod 2 comprises a screw rod main body 201, one end of the screw rod main body 201 is connected with a connecting rod 202, the inside of the connecting rod 202 is provided with a thread groove 203, the bolt piece 3 comprises a fixing screw 31, one end of the fixing screw 31 is connected with a connecting block 32, and the connecting block 32 is detachably connected with the code disc 4.
In this embodiment, the screw rod 2 and the hollow shaft 1 are in interference tight fit, so that concentricity of the transmission shaft is guaranteed, the spiral glue storage groove 5 is formed in the surface of the connecting rod 202, the cylindrical holding glue is added into the glue storage groove 5, the axial and radial binding force of the screw rod 2 and the hollow shaft 1 after being matched is increased, the screw rod 2 and the hollow shaft 1 are further fastened through the fixing screw 31 to penetrate through the hollow shaft 1 and be fixed with the connecting rod 202, the hollow shaft 1 is prevented from loosening, the structural reliability is improved, the reliability of the matching of the hollow shaft 1 and the screw rod 2 is guaranteed, and meanwhile, the operation difficulty is reduced.
The code wheel 4 is installed through one side of the connection block 32 in order to accurately control the position and movement of the screw shaft in the control system. The rotational position and speed of the screw shaft can be accurately detected by the code wheel 4 and this information is fed back to the controller. The controller can control the motor according to the feedback information to achieve accurate position control, speed control and motion control.
As shown in fig. 2 and fig. 3, specifically, the hollow shaft 1 includes a shaft body 101, a first limiting cavity 102, a second limiting cavity 103 and a third limiting cavity 104 are formed in the shaft body 101, the second limiting cavity 103 is located between the first limiting cavity 102 and the third limiting cavity 104, the connecting rod 202 is in interference fit with the first limiting cavity 102, the thread groove 203 is matched with the fixing screw 31, the fixing screw 31 is matched with the second limiting cavity 103, the connecting block 32 is matched with the third limiting cavity 104, the connecting rod 202 can be limited through the first limiting cavity 102, the fixing screw 31 can be limited through the second limiting cavity 103, the connecting block 32 can be limited through the third limiting cavity 104, the hollow shaft 1 can limit the screw rod 2 and the bolt 3, and the stability of connection is further enhanced.
As shown in fig. 2 and fig. 6, specifically, the diameter of the connecting rod 202 is smaller than that of the screw rod main body 201, the glue storage groove 5 is formed in the connecting rod 202, the inner diameter of the hollow shaft 1 is smaller than that of the screw rod main body 201, the outer diameter of the hollow shaft 1 is larger than that of the screw rod main body 201, and the length of the first limiting cavity 102 is the same as that of the connecting rod 202; the diameter of the screw rod main body 201 is larger than the inner diameter of the hollow shaft 1 and smaller than the outer diameter of the hollow shaft 1, and the length of the first limiting cavity 102 is the same as that of the connecting rod 202, so that after the connecting rod 202 is embedded into the limiting cavity 102, the screw rod main body 201 can limit the hollow shaft 1, and the hollow shaft 1 can be prevented from being shifted by matching with the connecting block 32.
Working principle: the screw rod 2 and the hollow shaft 1 are in interference tight fit, concentricity of the transmission shaft is guaranteed, the screw type glue storage groove 5 is formed in the surface of the connecting rod 202, cylindrical fixing glue is added into the glue storage groove 5, axial and radial binding force after the screw rod 2 and the hollow shaft 1 are matched is increased, the screw rod 2 and the hollow shaft 1 are further fastened through the fixing screw 31 and fixed with the connecting rod 202 through the hollow shaft 1, the hollow shaft 1 is prevented from loosening, structural reliability is improved, the reliability of the matching of the hollow shaft 1 and the screw rod 2 is guaranteed, and meanwhile operation difficulty is reduced.
Finally, it should be noted that: the foregoing description is only illustrative of the preferred embodiments of the present utility model, and although the present utility model has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements or changes may be made without departing from the spirit and principles of the present utility model.
Claims (10)
1. A linear motor shaft assembly, comprising: a hollow shaft (1) and a screw rod (2);
The bolt piece (3), the bolt piece (3) is connected between the hollow shaft (1) and the screw rod (2), and the bolt piece (3) is used for fixing the hollow shaft (1) and the screw rod (2);
the code disc (4) is connected to one side, far away from the screw rod (2), of the bolt piece (3);
And the screw rod (2) is provided with a glue storage groove (5).
2. The linear motor shaft assembly of claim 1, wherein: the hollow shaft (1) comprises a shaft body (101), a first limiting cavity (102), a second limiting cavity (103) and a third limiting cavity (104) are formed in the shaft body (101), and the second limiting cavity (103) is located between the first limiting cavity (102) and the third limiting cavity (104).
3. The linear motor shaft assembly of claim 1, wherein: the screw rod (2) comprises a screw rod main body (201), one end of the screw rod main body (201) is connected with a connecting rod (202), and a thread groove (203) is formed in the connecting rod (202).
4. The linear motor shaft assembly of claim 1, wherein: the bolt piece (3) comprises a fixing screw (31), one end of the fixing screw (31) is connected with a connecting block (32), and the connecting block (32) is detachably connected with the code disc (4).
5. A linear motor shaft assembly according to claim 3, wherein: the diameter of the connecting rod (202) is smaller than that of the screw rod main body (201), and the glue storage groove (5) is formed in the connecting rod (202).
6. A linear motor shaft assembly according to claim 3, wherein: the connecting rod (202) is in interference fit with the first limiting cavity (102), and the thread groove (203) is matched with the fixing screw (31).
7. The linear motor shaft assembly of claim 4, wherein: the fixing screw (31) is matched with the second limiting cavity (103), and the connecting block (32) is matched with the third limiting cavity (104).
8. The linear motor shaft assembly of claim 1, wherein: the glue storage groove (5) adopts a thread groove.
9. The linear motor shaft assembly of claim 1, wherein: the inner diameter of the hollow shaft (1) is smaller than the diameter of the screw rod main body (201), and the outer diameter of the hollow shaft (1) is larger than the diameter of the screw rod main body (201).
10. A linear motor shaft assembly according to claim 2, wherein: the length of the first limiting cavity (102) is the same as that of the connecting rod (202).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322920145.0U CN220869995U (en) | 2023-10-30 | 2023-10-30 | Linear motor shaft assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322920145.0U CN220869995U (en) | 2023-10-30 | 2023-10-30 | Linear motor shaft assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220869995U true CN220869995U (en) | 2024-04-30 |
Family
ID=90821279
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322920145.0U Active CN220869995U (en) | 2023-10-30 | 2023-10-30 | Linear motor shaft assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220869995U (en) |
-
2023
- 2023-10-30 CN CN202322920145.0U patent/CN220869995U/en active Active
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