CN217234293U - L-shaped combined sealing device for ball screw pair - Google Patents
L-shaped combined sealing device for ball screw pair Download PDFInfo
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- CN217234293U CN217234293U CN202123272315.6U CN202123272315U CN217234293U CN 217234293 U CN217234293 U CN 217234293U CN 202123272315 U CN202123272315 U CN 202123272315U CN 217234293 U CN217234293 U CN 217234293U
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- sealing
- adjusting ring
- ball screw
- sealing ring
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Abstract
The utility model discloses a L type combined sealing device for ball screw pair, including adjusting collar and sealing washer, wherein: the sealing ring comprises a sealing ring and an adjusting ring arranged on one side of the sealing ring, the adjusting ring is of an elastic structure, and open slots are distributed on the circumference of the adjusting ring; the adjusting ring is sleeved outside the adjusting ring, and the inner diameter of the adjusting ring is controlled by the adjusting ring; the inner walls of the sealing ring and the adjusting ring are provided with internal threads matched with the lead screw. The utility model provides the sealing performance of spiral pair, environmental suitability realizes long-life and non-maintaining. And the friction torque can be adjusted according to the use environment and the processing precision, so that the screw pair can simultaneously meet the performance requirements of sealing performance and friction torque.
Description
Technical Field
The utility model relates to a sealing mechanism, concretely relates to L type composite sealing device for ball screw spiral pair.
Background
In the field of aviation, in the application process of the ball screw pair, as the application environment is complex, the long service life and the maintenance-free requirement are required to be realized, the high requirement is provided for the sealing of the screw pair; the screw pair sealing structure can prevent external foreign matters from entering the nut and prevent lubricating grease in the nut from leaking.
The sealing structure commonly used by the screw pair at home and abroad comprises a brush sealing structure, a rubber labyrinth sealing structure and a composite material non-contact sealing structure.
The brush sealing structure is mainly used for removing larger particle sand dust, and sealing can not be realized; the composite material has better non-contact sealing performance, but the spiral pair can not meet the requirements of complex environment, long service life and maintenance-free property; the sealing performance of the rubber labyrinth sealing structure is affected by the precision of the spiral pair, and the sealing performance is uneven.
Disclosure of Invention
The utility model aims at providing a L type composite seal device for ball screw spiral is vice for solve the vice sealing mechanism sealing performance's of current ball screw poor problem.
In order to achieve the above purpose, the utility model adopts the following technical scheme to realize:
an L-shaped combined sealing device for a ball screw pair comprises an adjusting ring and a sealing ring, wherein:
the sealing ring comprises a sealing ring and an adjusting ring arranged on one side of the sealing ring, the adjusting ring is of an elastic structure, and open slots are distributed on the circumference of the adjusting ring;
the adjusting ring is sleeved outside the adjusting ring, and the inner diameter of the adjusting ring is controlled by the adjusting ring;
and internal threads matched with the lead screw are arranged on the inner walls of the sealing ring and the adjusting ring.
Further, the outer diameter of the sealing ring is larger than that of the adjusting ring, and the cross section of the sealing ring and the adjusting ring is of an L-shaped structure.
Further, the cross section of the adjustment ring is an O-shaped section, a rectangular section, or an X-shaped section.
Further, the sealing device is arranged on a nut in the ball screw pair and moves on the screw together with the nut; and a mounting hole is processed on the inner wall of the end part of the nut, and the sealing ring is fixed in the mounting hole.
Furthermore, the open slot be V type groove, the open slot evenly distributed is a plurality ofly on adjusting the ring circle circumference, the less one end of open slot be close to the sealed ring circle.
Further, splines are distributed on the other side of the sealing ring and/or on the circumference of the sealing ring.
Further, when the splines are distributed on the circumference of the sealing ring, grooves matched with the splines are designed on the inner wall of the mounting hole of the nut.
Compared with the prior art, the utility model has the following technical characteristics:
the utility model provides the sealing performance of spiral pair, environmental suitability realizes long-life and non-maintaining. And the friction torque can be adjusted according to the use environment and the processing precision, so that the screw pair can meet the performance requirements of sealing performance and friction torque.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention;
fig. 2 is a schematic view of the application of the present invention.
The reference numbers in the figures illustrate: 1 sealing washer, 2 adjusting rings, 3 regulation rings, 4 sealing rings, 5 open slots, 6 splines, 7 mounting holes, 8 nuts, 9 lead screws, 10 lead screw top diameters and 11 lead screw raceways.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.
The embodiment of the utility model provides a L type composite seal device for ball screw spiral pair, including adjusting ring 2 and sealing washer 1, wherein:
the sealing ring 1 comprises a sealing ring 4 and an adjusting ring 3 arranged on one side of the sealing ring 4, the adjusting ring 3 is of an elastic structure, and open grooves 5 are distributed on the circumference of the adjusting ring 3;
the adjusting ring 2 is sleeved outside the adjusting ring 3, and the inner diameter of the adjusting ring 3 is controlled by the adjusting ring 2;
the inner walls of the sealing ring 4 and the adjusting ring 3 are provided with internal threads for matching with the lead screw 9.
In this embodiment, the outer diameter of the sealing ring 4 is larger than that of the adjusting ring 3, and the cross section of the sealing ring and the adjusting ring is L-shaped, as shown in fig. 2. The cross section of the adjustment ring 3 is not particularly limited, and may be, for example, an O-shaped section, a rectangular section shown in fig. 2, or an X-shaped section, etc.
The sealing device is mounted on a nut 8 in a ball screw pair and moves together with the nut 8 on a screw 9. Specifically, referring to fig. 2, a mounting hole 7 is formed in the inner wall of the end of the nut 8, and the seal ring 1 is fixed in the mounting hole 7; in the scheme, the outer wall of the sealing ring 4 is tightly matched with the inner wall of the mounting hole 7.
Referring to fig. 1, the open grooves 5 are V-shaped grooves, a plurality of open grooves 5 are uniformly distributed on the circumference of the adjusting ring 3, and the smaller end of each open groove 5 is close to the sealing ring 4. Through the setting of open slot 5 for adjust ring 3 wholly have elasticity, when the circumferencial direction at adjust ring 3 is exerted pressure, under the effect of pressure, open slot 5 will be closed according to pressure size certain degree, thereby changes the internal diameter of whole regulation ring 3, thereby adjusts 1 leakproofness of sealing washer and friction torque, satisfies leakproofness and friction torque requirement simultaneously. The open groove 5 may be a rectangular groove, a circular arc groove, or the like, in addition to the V-shaped groove.
Therefore, when in application, the adjusting rings 2 with different inner diameters can be selected to be sleeved on the sealing ring 1 within a design tolerance range, and the inner diameter of the sealing ring 1 is adjusted to meet the actual use requirement. The adjusting ring 2 may be an O-ring made of rubber or other materials, for example.
In order to facilitate the installation of the sealing ring 1 and the butt joint with other structures, in the scheme, the spline 6 is distributed on the other side of the sealing ring 4 and/or on the circumference of the sealing ring 4.
In the example given in fig. 1, the splines 6 are distributed on the other side of the sealing ring 4 (with respect to the adjustment ring 3), as shown in fig. 2, and the splines 6 are intended for a butt-joint mounting with another mating element, such as a deicer, when the sealing device is mounted on the nut 8. The spline 6 can be arranged on the circumference of the sealing ring 4 and used for installing and fixing the sealing ring 1; at this time, a groove which is engaged with the spline 6 is designed on the inner wall of the mounting hole 7 of the nut 8, and the seal ring 1 is mounted on the nut 8 by key groove engagement.
In this scheme, sealing device passes through sealing washer 1 and realizes the sealed of lead screw raceway 11, lead screw top footpath 10, and adjusting ring 2 seals the mounting hole 7 of nut 8 on the one hand, and adjustable sealing washer 1 leakproofness and friction torque on the other hand satisfy leakproofness and friction torque requirement simultaneously.
The above-mentioned embodiments are intended to illustrate the present invention, but not to limit the present invention, and any modifications and changes made to the present invention are within the spirit of the present invention and the scope of the claims.
Claims (7)
1. An L-shaped combined sealing device for a ball screw pair is characterized by comprising an adjusting ring (2) and a sealing ring (1), wherein:
the sealing ring (1) comprises a sealing ring (4) and an adjusting ring (3) arranged on one side of the sealing ring (4), the adjusting ring (3) is of an elastic structure, and open grooves (5) are distributed on the circumference of the adjusting ring (3);
the adjusting ring (2) is sleeved outside the adjusting ring (3), and the inner diameter of the adjusting ring (3) is controlled by the adjusting ring (2);
the inner walls of the sealing ring (4) and the adjusting ring (3) are provided with internal threads matched with the lead screw.
2. The L-shaped combined sealing device for the ball screw pair according to claim 1, wherein the outer diameter of the sealing ring (4) is larger than that of the adjusting ring (3), and the cross section of the whole of the sealing ring and the adjusting ring is of an L-shaped structure.
3. The L-shaped combination seal for a ball screw pair according to claim 1, wherein the cross section of the adjusting ring (3) is an O-shaped section, a rectangular section or an X-shaped section.
4. The L-shaped combined sealing device for the ball screw pair as claimed in claim 1, wherein the sealing device is mounted on a nut in the ball screw pair and moves on the screw shaft together with the nut; and a mounting hole (7) is processed on the inner wall of the end part of the nut, and the sealing ring (1) is fixed in the mounting hole (7).
5. The L-shaped combined sealing device for the ball screw pair as claimed in claim 1, wherein the open grooves (5) are V-shaped grooves, the open grooves (5) are uniformly distributed on the circumference of the adjusting ring (3), and the smaller ends of the open grooves (5) are close to the sealing ring (4).
6. The L-shaped combined sealing device for the ball screw pair according to claim 1, characterized in that splines (6) are distributed on the other side of the sealing ring (4) and/or on the circumference of the sealing ring (4).
7. The L-shaped combined sealing device for the ball screw thread pair as claimed in claim 4, characterized in that when the splines (6) are distributed on the circumference of the sealing ring (4), grooves matched with the splines (6) are designed on the inner wall of the mounting hole (7) of the nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123272315.6U CN217234293U (en) | 2021-12-23 | 2021-12-23 | L-shaped combined sealing device for ball screw pair |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123272315.6U CN217234293U (en) | 2021-12-23 | 2021-12-23 | L-shaped combined sealing device for ball screw pair |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217234293U true CN217234293U (en) | 2022-08-19 |
Family
ID=82825125
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123272315.6U Active CN217234293U (en) | 2021-12-23 | 2021-12-23 | L-shaped combined sealing device for ball screw pair |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217234293U (en) |
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2021
- 2021-12-23 CN CN202123272315.6U patent/CN217234293U/en active Active
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