CN218124452U - Motor shaft extension sealing end cover structure - Google Patents
Motor shaft extension sealing end cover structure Download PDFInfo
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- CN218124452U CN218124452U CN202222546292.1U CN202222546292U CN218124452U CN 218124452 U CN218124452 U CN 218124452U CN 202222546292 U CN202222546292 U CN 202222546292U CN 218124452 U CN218124452 U CN 218124452U
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Abstract
The utility model provides a motor shaft stretches end cover structure of sealing, through setting up the two-way output sphere pair in the shaft stretches sealed end cover subassembly, the transfer line, the end cover output shaft, end cover input disc and end cover output disc, make the motor at the during operation, the machine body transmits rotary motion to the end cover input disc through the motor output shaft, transmit the transfer line through the ball hinge on the end cover output disc, the transfer line changes circular motion into the circular cone pendulum motion of two symmetries through two-way sphere pair and exports the end cover output disc, again by end cover output shaft output rotary motion, through changing rotary motion into the circular cone pendulum motion of two symmetries, simultaneously through utilizing flexible sealing member and casing assembly, the transfer line forms static seal, flexible sealing member separates its left and right sides cavity completely, reach sealed effect, therefore, through the utility model discloses make original dynamic seal convert into static seal, make the motor reach completely sealed effect, the use field of motor has been widened.
Description
Technical Field
The utility model relates to the technical field of electric motor, especially, relate to a motor shaft stretches end cover structure.
Background
In the special motor applied in the aviation and aerospace field, the sealing performance of the motor is required to have high requirements due to the special environment requirements, the motor sealing is divided into dynamic sealing and static sealing, the static sealing is not difficult to solve, the sealing gasket or glue coating is used for solving the problem on the contact surface, the sealing performance of the dynamic sealing is difficult to solve, a gap is formed when a shaft rotates, dust, water vapor and the like easily enter, the traditional method is to install an oil seal at the shaft extension of the motor (as shown in figure 1), the oil seal is used for forming a sealing structure for a motor shaft, the motor is shown as 18 in figure 1, and the oil seal is shown as 19.
In the prior art documents, some documents disclose the sealing of the motor shaft extension, for example, patent application with publication number CN215871052U discloses a shaft sleeve for sealing the motor shaft and a shaft sealing structure using the same, which performs shaft sealing on the shaft by using the cooperation of the shaft sleeve and a skeleton oil seal, because the outside of the shaft sleeve is provided with a wear-resistant heat insulation layer, and the skeleton oil seal is tightly attached to the wear-resistant heat insulation layer in a sealing manner, when the skeleton oil seal rotates relative to the shaft sleeve, the heat generated by the skeleton oil seal is isolated by the wear-resistant heat insulation layer and cannot be transferred to the rotating shaft, so that the heating of the rotating shaft due to the shaft sealing structure can be effectively inhibited.
If the patent with the publication number of CN215419849U requests a motor shaft extension end dynamic sealing system and a motor, a sealing grease cavity is arranged, sealing grease is filled in the sealing grease cavity, a framework oil seal is further arranged in the sealing grease cavity, a sealing effect is achieved together, water vapor and the like are effectively isolated by the sealing grease, meanwhile, the motor shaft can be lubricated by the sealing grease, and therefore the working efficiency of the motor is improved, and the service life of a sealing ring is prolonged.
In the sealing structure in the prior art, although the problem that the motor is used in most environments can be solved, the motor cannot be effectively sealed in severe special environments such as a liquid environment and the like, and the motor is burnt.
SUMMERY OF THE UTILITY MODEL
The utility model mainly aims at providing a motor shaft stretches end cover structure, aim at solving above-mentioned technical problem.
In order to achieve the above object, the utility model provides a motor shaft stretches end cover structure, including motor body and motor output shaft, be provided with the shaft on motor body and stretch sealed end cover subassembly, this shaft stretches sealed end cover subassembly and includes:
a housing assembly having a first cavity and a second cavity; the opening of the first cavity on the shell component is connected with the motor body;
the bidirectional output spherical pair is arranged on the partition plate formed between the first cavity and the second cavity;
the middle part of the transmission rod is connected with the bidirectional output spherical pair, one end of the transmission rod is arranged in the first cavity, and the other end of the transmission rod is arranged in the second cavity;
the end cover output shaft penetrates through the end wall of the second cavity, which is far away from the motor body, and is coaxially arranged with the motor output shaft;
the end cover input disc is arranged in the first cavity, the center of the end cover input disc is connected with the output shaft of the motor, and the position, close to the edge, of the end cover input disc is connected with the end of the transmission rod through a ball hinge;
the end cover output disc is arranged in the second cavity, the center of the end cover output disc is connected with the end cover output shaft, and the position, close to the edge, of the end cover output disc is connected with the end of the transmission rod through a ball hinge;
the flexible sealing piece is arranged in the first cavity or the second cavity and close to the bidirectional output spherical pair, the periphery of the flexible sealing piece is fixedly connected to the inner wall of the cavity, and the transmission rod penetrates through the flexible sealing piece.
Preferably, the shell assembly comprises a shell I, a shell II and a shell III, which are all of a cylindrical shell structure with one open end; the shell I is connected with the closed end of the shell II to form a partition plate between a first cavity and a second cavity; the shell II is butted with the open end of the inner cavity of the shell III, and the inner cavities of the shell II and the shell III form the second cavity together; the open end of the shell I is buckled with the motor body, and the inner cavity of the shell I forms the first cavity; and the end cover output shaft is arranged on the shell III.
Preferably, the outer peripheral surface of the open end of the inner cavity of the shell I is provided with a flange edge, and the flange edge is connected with the motor body through a screw I.
Preferably, flange edges are respectively arranged on the peripheral surfaces of the closed ends of the inner cavities of the shell I and the shell II, and the shell I and the shell II are connected through a screw II.
Preferably, flange edges are respectively arranged on the outer peripheral surfaces of the open ends of the inner cavities of the second shell and the third shell and are connected through a screw IV.
Preferably, the flexible sealing element is arranged in an inner cavity of the shell II, a step surface is arranged at a position, close to the bottom wall, of the inner cavity of the shell II, and the flexible sealing element is pressed on the step surface through a fixed pressing ring and a screw III.
Preferably, the end cap output shaft is mounted on an end wall of the housing iii by a bearing.
Preferably, a fixing rope is bound at the connecting position of the flexible sealing element and the transmission rod.
Preferably, the lengths of the transmission rods on the two sides of the bidirectional output spherical pair are equal.
Preferably, the end cover input disc and the end cover output disc are respectively provided with a hemispherical recess for accommodating a ball head of the ball hinge, and the ball head of the ball hinge is arranged in the hemispherical recess through the hinge pressing ring and the screw V.
Since the technical scheme is used, the beneficial effects of the utility model are as follows:
the utility model discloses in, through setting up the two-way output spherical pair in the axle extension sealed end cover subassembly, the transfer line, the end cover output shaft, end cover input disc and end cover output disc, make the motor at the during operation, the machine body transmits rotary motion to the end cover input disc through the motor output shaft, transmit the transfer line through the ball hinge on the end cover output disc, the transfer line changes circular motion into the circular cone pendulum motion of two symmetries through two-way spherical pair and exports the end cover output disc, again by end cover output shaft output rotary motion, through the circular cone pendulum motion that changes into two symmetries with rotary motion, simultaneously through utilizing flexible sealing member and casing subassembly, the transfer line forms static seal, flexible sealing member separates its left and right sides cavity completely, reach sealed effect, therefore, through the utility model discloses make original dynamic seal convert static seal into, make the motor reach completely sealed effect, the use field of motor has been widened.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
FIG. 1 is a schematic view of a conventional electromechanical sealing structure;
fig. 2 is a schematic structural view of a motor shaft extension sealing end cover provided by the present invention;
fig. 3 is a three-dimensional schematic view of the structure of the motor shaft extension end sealing end cap provided by the present invention;
fig. 4 is a schematic view of the structure of the middle ball hinge of the present invention.
The reference numbers illustrate: 1. a motor body; 2. an end cap input disc; 3. a screw I; 4. a transmission rod; 5. a shell I; 6. a screw II; 7. a screw III; 8. a flexible seal; 9. fixing the compression ring; 10. a shell II; 11. a screw IV; 12. a housing III; 13. a bearing; 14. an end cover output shaft; 15. an end cover output tray; 16. fixing a rope; 17. a shaft extending to seal the end cap assembly; 18. a motor; 19. oil sealing; 20. a screw V; 21. a hinge compression ring; A. a ball hinge; B. a bidirectional output spherical pair; C. an output shaft of the motor; D. a first chamber; E. a second chamber.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without making creative efforts belong to the protection scope of the present invention.
It should be noted that all the directional indicators (such as up, down, left, right, front, back \8230;) in the embodiments of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the attached drawings), and if the specific posture is changed, the directional indicator is changed accordingly.
In addition, the descriptions related to "i", "ii", "iii", etc. in the present invention are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit ly indicating the number of technical features indicated. Thus, a feature defined as "i", "ii", "iii" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
Combine fig. 2, fig. 3 to show, for the utility model provides a motor shaft stretches end cover structure embodiment, this structure includes motor body 1 and motor output shaft C, is provided with the shaft on motor body 1 and stretches sealed end cover subassembly 17, and the shaft stretches sealed end cover subassembly 17 and includes:
a housing assembly having a first chamber D and a second chamber E; the mouth of the first cavity D on the shell component is connected with the motor body 1;
the bidirectional output spherical pair B is arranged on a partition plate formed between the first cavity D and the second cavity E;
the middle part of the transmission rod 4 is connected with the bidirectional output spherical pair B, one end of the transmission rod 4 is arranged in the first cavity D, and the other end of the transmission rod 4 is arranged in the second cavity E;
the end cover output shaft 14 penetrates through the end wall of the second cavity E far away from the motor body 1 and is coaxially arranged with the motor output shaft C;
the end cover input disc 2 is arranged in the first cavity D, the center of the end cover input disc is connected with the output shaft C of the motor, and the position, close to the edge, of the end cover input disc 2 is connected with the end of the transmission rod 4 through a ball hinge A;
the end cover output disc 15 is arranged in the second cavity E, the center of the end cover output disc is connected with the end cover output shaft 14, and the position, close to the edge, of the end cover output disc 15 is connected with the end of the transmission rod 4 through a ball hinge A;
Through the above-mentioned structure that connects, the working process of motor does: the motor body 1 transmits the rotary motion to the end cover input disc 2 through the motor output shaft C, and transmits the rotary motion to the transmission rod 4 through the spherical hinge A on the end cover output disc 2, and the transmission rod 4 changes the circular motion into two symmetrical conical pendulum motions through the bidirectional spherical pair B and outputs the two symmetrical conical pendulum motions to the end cover output disc 15 and then outputs the rotary motion through the end cover output shaft. A flexible sealing element 8 is arranged at the position, close to the spherical pair, of the transmission rod 4, the flexible sealing element 8 forms static seal with the shell assembly and the transmission rod 4, and the left cavity and the right cavity of the shell assembly are completely separated, so that the sealing effect is achieved. Therefore, the rotary motion is changed into two symmetrical conical pendulums, so that the original dynamic seal is converted into static seal, and the motor achieves the effect of complete sealing.
As shown in fig. 2, in the present embodiment, the housing assembly includes a housing i 5, a housing ii 10, and a housing iii 12, which are all of a cylindrical housing structure with an open end; the shell I5 is connected with the closed end of the shell II 10 to form a partition plate between the first cavity D and the second cavity E, so that the bidirectional output spherical pair B is rotatably mounted on the partition plate. The open end of the inner cavity of the shell II 10 and the open end of the inner cavity of the shell III 12 are butted, and the inner cavities of the two form the second cavity E; the open end of the shell I5 is buckled with the motor body 1, and the inner cavity of the shell I5 forms the first cavity D; the end cover output shaft 14 is arranged on the shell III 12. The shell assembly is of a sectional structure, the end cover input disc 2 and the end cover output disc 15 in the first cavity D and the second cavity E are convenient to install, and the shell assembly is simple in structure and convenient to install.
As shown in fig. 2, a flange is provided on the outer peripheral surface of the open end of the inner cavity of the housing i 5, and the flange is connected to the motor body 1 by a screw i 3. And flange edges are respectively arranged on the peripheral surfaces of the closed ends of the inner cavities of the shell I5 and the shell II 10 and are connected through a screw II 6. And flange edges are respectively arranged on the peripheral surfaces of the open ends of the inner cavities of the shell II 10 and the shell III 12, and the shell II and the shell III are connected through a screw IV 11. The flange edge and the screw matched structure are utilized, so that the shell assembly is convenient to connect between the shell sections, and the structure is simple and convenient to install.
Referring to fig. 2, the flexible sealing element 8 is arranged in the inner cavity of the housing ii 10, and a step surface is arranged at a position of the inner cavity of the housing ii 10 close to the bottom wall, so that the flexible sealing element 8 is pressed on the step surface through the fixing pressing ring 9 and the screw iii 7, and the fixing pressing ring 9 can form a seal with the flexible sealing element 8 when pressed.
As shown in fig. 2, the output shaft 14 is mounted to the end wall of the housing iii 12 via a bearing 13.
As shown in fig. 2, a fixing rope 16 is tied at the connecting position of the flexible sealing element 8 and the transmission rod 4. The flexible sealing element 8 is fixed on the transmission rod 4 by binding the fixing rope 16, and the sealing between the flexible sealing element 8 and the transmission rod 4 is realized.
In the present embodiment, the lengths of the transmission rods 4 on both sides of the bidirectional output spherical pair B are equal. It is possible to realize a change of the rotational movement of the motor into two symmetrical conical pendular movements so that the first chamber D or the second chamber E can adopt the same diameter.
Referring to fig. 3 and 4, hemispherical recesses for accommodating ball heads of the ball hinge a are formed in the end cover input disc 2 and the end cover output disc 15, and the ball heads of the ball hinge a are mounted in the hemispherical recesses through hinge compression rings 21 and screws v 20. Simple structure and convenient installation.
The above only be the preferred embodiment of the present invention, not consequently the restriction the patent scope of the present invention, all be in the utility model discloses a under the design, utilize the equivalent structure transform of doing of the content of the specification and the attached drawing, or direct/indirect application all includes in other relevant technical field the utility model discloses a patent protection is within scope.
Claims (10)
1. The utility model provides a motor shaft stretches end cover structure, includes motor body (1) and motor output shaft (C), is provided with shaft extension sealed end cover subassembly (17) on motor body (1), and its characterized in that, this shaft extension sealed end cover subassembly (17) includes:
a housing assembly having a first chamber (D) and a second chamber (E); the mouth of the first cavity (D) on the shell component is connected with the motor body (1);
the bidirectional output spherical pair (B) is arranged on a partition plate formed between the first cavity (D) and the second cavity (E);
the middle part of the transmission rod (4) is connected with the bidirectional output spherical pair (B), one end of the transmission rod (4) is arranged in the first cavity (D), and the other end of the transmission rod (4) is arranged in the second cavity (E);
the end cover output shaft (14) penetrates through the end wall of the second cavity (E) far away from the motor body (1) and is coaxially arranged with the motor output shaft (C);
the end cover input disc (2) is arranged in the first cavity (D), the center of the end cover input disc is connected with the motor output shaft (C), and the position, close to the edge, of the end cover input disc (2) is connected with the end of the transmission rod (4) through a ball hinge (A);
the end cover output disc (15) is arranged in the second cavity (E), the center of the end cover output disc is connected with the end cover output shaft (14), and the position, close to the edge, of the end cover output disc (15) is connected with the end of the transmission rod (4) through a ball hinge (A);
the flexible sealing element (8) is arranged in the first cavity (D) or the second cavity (E) and close to the position of the bidirectional output spherical pair (B), the periphery of the flexible sealing element (8) is fixedly connected to the inner wall of the cavity, and the transmission rod (4) penetrates through the flexible sealing element (8).
2. The motor shaft extension end cover structure of claim 1, wherein: the shell assembly comprises a shell I (5), a shell II (10) and a shell III (12), and the shell I, the shell II and the shell III are all of a cylindrical shell structure with one open end; the shell I (5) is connected with the closed end of the shell II (10) to form a partition plate between the first cavity (D) and the second cavity (E);
the open ends of the inner cavities of the shell II (10) and the shell III (12) are butted, and the inner cavities of the shell II and the shell III form a second cavity (E); the open end of the shell I (5) is buckled with the motor body (1), and the inner cavity of the shell I (5) forms the first cavity (D); the end cover output shaft (14) is arranged on the shell III (12).
3. The motor shaft extension end cover structure according to claim 2, wherein: the peripheral surface of the open end of the inner cavity of the shell I (5) is provided with a flange edge, and the flange edge is connected with the motor body (1) through a screw I (3).
4. The motor shaft extension end cover structure according to claim 2, wherein: and flange edges are respectively arranged on the peripheral surfaces of the closed ends of the inner cavities of the first shell (5) and the second shell (10), and the first shell and the second shell are connected through a screw II (6).
5. The motor shaft extension end cover structure according to claim 2, wherein: and flange edges are respectively arranged on the peripheral surfaces of the open ends of the inner cavities of the second shell (10) and the third shell (12), and the two are connected through a screw IV (11).
6. The motor shaft extension end cover structure according to claim 2, wherein: the flexible sealing element (8) is arranged in an inner cavity of the shell II (10), a step surface is arranged at a position, close to the bottom wall, of the inner cavity of the shell II (10), and the flexible sealing element (8) is pressed on the step surface through a fixed pressing ring (9) and a screw III (7).
7. The motor shaft extension end cover structure according to claim 2, wherein: the end cover output shaft (14) is mounted on the end wall of the shell III (12) through a bearing (13).
8. The motor shaft extension end cover structure according to claim 1, wherein: a fixed rope (16) is tied at the connecting position of the flexible sealing element (8) and the transmission rod (4).
9. The motor shaft extension end cover structure of claim 1, wherein: the lengths of the transmission rods (4) at the two sides of the bidirectional output spherical pair (B) are equal.
10. The motor shaft extension end cover structure according to claim 1, wherein: the end cover input disc (2) and the end cover output disc (15) are respectively provided with a hemispherical recess for accommodating a ball head of the ball hinge (A), and the ball head of the ball hinge (A) is arranged in the hemispherical recess through a hinge pressure ring (21) and a screw V (20).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222546292.1U CN218124452U (en) | 2022-09-26 | 2022-09-26 | Motor shaft extension sealing end cover structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222546292.1U CN218124452U (en) | 2022-09-26 | 2022-09-26 | Motor shaft extension sealing end cover structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218124452U true CN218124452U (en) | 2022-12-23 |
Family
ID=84530356
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222546292.1U Active CN218124452U (en) | 2022-09-26 | 2022-09-26 | Motor shaft extension sealing end cover structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218124452U (en) |
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2022
- 2022-09-26 CN CN202222546292.1U patent/CN218124452U/en active Active
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