CN213017215U - Shaft end locking device and middle eddy current retarder - Google Patents
Shaft end locking device and middle eddy current retarder Download PDFInfo
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- CN213017215U CN213017215U CN202021570657.9U CN202021570657U CN213017215U CN 213017215 U CN213017215 U CN 213017215U CN 202021570657 U CN202021570657 U CN 202021570657U CN 213017215 U CN213017215 U CN 213017215U
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Abstract
The utility model belongs to the technical field of middle eddy current retarder, a shaft end locking device is disclosed for connecting center pin and rotor, including center pin locking mechanism, rotor retaining member and locking piece, center pin locking mechanism includes axle head locking screw and flange, and axle head locking screw runs through the centre bore of flange and fixes the flange at the tip of center pin, and locking piece cover is established on axle head locking screw or rotor retaining member and is located the flange is kept away from one side of center pin, and locking piece is provided with the first portion of bending and the second portion of bending outward, butts axle head locking screw and rotor retaining member respectively; the middle eddy current retarder comprises a bearing seat, a rotor, a central shaft and the shaft end locking device. The anti-loosening piece can enable the shaft end locking screw and the rotor locking piece to rotate reversely, mutual limitation is achieved, anti-loosening performance is improved, and further, the shaft system reliability of the middle eddy current retarder is improved.
Description
Technical Field
The utility model relates to an in put eddy current retarder technical field, especially relate to a shaft end locking device reaches and puts eddy current retarder in.
Background
The vehicle retarder is an important part commonly used by a vehicle braking system and mainly comprises an eddy current retarder, a magnetic retarder, a hydraulic retarder and the like. The eddy current retarder is a non-contact type speed reducing component, and mainly comprises a single-rotor drum type retarder and a double-rotor disc type retarder. When a vehicle brakes, the eddy current retarder is matched with a traditional braking mechanism, so that the braking performance is effectively improved, and the eddy current retarder is more and more popularized in recent years. The central eddy current retarder is arranged in the middle of a vehicle transmission shaft, and the rotation support of the central eddy current retarder is a self shaft system, so that the locking and looseness prevention of the shaft system are important standards for measuring the reliability of the shaft system. The existing shaft end locking device is generally provided with two shaft end locking screws, so that the looseness prevention is poor, and the shaft system reliability of the middle eddy current retarder is low.
Based on the above situation, it is desired to design a shaft end locking device to solve the above problems.
SUMMERY OF THE UTILITY MODEL
The utility model discloses an aim at: provided is a shaft end locking device capable of improving looseness prevention.
The utility model discloses another aim at: still provide and put eddy current retarder in, axle head locking device can be through locking piece is locking, and then has improved the shafting reliability of putting eddy current retarder in.
To achieve the purpose, the utility model adopts the following technical proposal:
in one aspect, a shaft end locking device is disclosed for connecting a central shaft and a rotor, comprising:
the central shaft locking mechanism comprises a shaft end locking screw and a flange, and the shaft end locking screw penetrates through a central hole of the flange and fixes the flange at the end part of the central shaft;
the rotor locking piece comprises a rotor locking bolt and a rotor locking nut which are in threaded connection, and the rotor is fixed on the flange through the rotor locking piece;
the locking bolt comprises a shaft end locking bolt and a rotor locking part, wherein the shaft end locking bolt is arranged on the shaft end locking bolt, the rotor locking part is arranged on the shaft end locking bolt, the flange is arranged on the shaft end locking bolt, the locking part is arranged on the rotor locking bolt, the locking part is arranged on the shaft end locking bolt, the flange is arranged on the flange, one side of the central shaft is far away from the flange, one end of the locking part is provided with a first bending part which is bent outwards, the first bending part is abutted to the side wall of the head of the shaft end locking bolt, the.
Optionally, the locking member is sleeved on the shaft end locking screw, the first bending portion abuts against a side wall of a head of the shaft end locking screw, and the second bending portion abuts against a side wall of one side, close to the shaft end locking screw, of the head of the rotor locking bolt or one side, close to the shaft end locking screw, of the rotor locking nut;
or, the locking piece is sleeved on the rotor locking piece, the second bending part abuts against the side wall of the head of the rotor locking bolt or the rotor locking nut, and the first bending part abuts against the head of the shaft end locking screw and is close to the side wall of one side of the rotor locking piece.
Specifically, locking piece plays the transmission effect, can make axle head locking screw and rotor retaining member counter rotation, and mutual restriction, and then improved locking nature.
Optionally, a sleeve of the anti-loosening element is arranged on the shaft end locking screw, one end of the anti-loosening element is provided with a first bending portion which is bent outwards, the first bending portion abuts against the side wall of the head of the shaft end locking screw, and the other end of the anti-loosening element is located between the rotor locking elements.
Specifically, one end of the anti-loosening element and the shaft end locking screw rotate synchronously, but the two rotor locking elements limit the other end of the anti-loosening element, so that the rotation looseness of the shaft end locking screw is limited.
Preferably, the first bending part and the second bending part are bent outwards at an angle of 90-120 °.
Specifically, when the bending angle of the first bending part and the second bending part is 90-120 degrees, the rigidity of the bending part of the anti-loosening piece is better, the anti-loosening piece is not easy to reset, and the reliability is improved.
As a preferable scheme, the first bending portion is attached to a side wall of a head of the shaft end locking screw, and the second bending portion is attached to a head of the rotor locking bolt or a side wall of the rotor locking nut.
Specifically, the first bending portion and the second bending portion are attached to each other, so that the anti-loosening piece and the shaft end locking screw are improved, the synchronism between the anti-loosening piece and the rotor locking piece is improved, and the anti-loosening performance of the anti-loosening piece is further improved.
As a preferable scheme, one end of the flange, which is far away from the central shaft, is provided with a groove, and the head of the shaft end locking screw, and the head of the rotor locking bolt or the rotor locking nut are arranged in the groove.
Specifically, the groove can form the protection of keeping away to shaft end locking screw and rotor retaining member, prevents that foreign object collision from causing not hard up, has improved the reliability.
As a preferable scheme, the central shaft locking mechanism further comprises a conical elastic pad, and the conical elastic pad is sleeved on the shaft end locking screw and is positioned on one side, far away from the central shaft, of the flange.
Specifically, the toper bullet pad can play locking effect to axle head locking screw, further improves locking nature.
As a preferable scheme, the central shaft locking mechanism further comprises a flange pressing plate, and the shaft end locking screw presses the flange to the end part of the central shaft through the flange pressing plate.
Preferably, the surfaces of the shaft end locking screw and the flange pressure plate are provided with corrosion-resistant coatings.
Optionally, the corrosion-resistant layer is a zinc-chromium coating.
Specifically, the corrosion-resistant layer can improve the life of axle head locking screw and flange clamp plate.
On the other hand, the middle eddy current retarder comprises a bearing seat, a rotor, a central shaft and the shaft end locking device, wherein the bearing seat is rotatably connected with the central shaft and can support the central shaft, the flange is fixed at the end part of the central shaft, and the rotor is connected with the central shaft through the flange.
Optionally, the shaft end locking device is provided with only one shaft end locking screw.
Specifically, the shaft end locking device is only provided with one shaft end locking screw, so that the central eddy current retarder is compact in structure.
As a preferable scheme, a sealing assembly is sleeved at the end part of the central shaft, and the sealing assembly is located at the opening of the bearing seat and can seal the opening of the bearing seat.
As a preferable scheme, an adjusting gasket is sleeved on the central shaft, one end of the adjusting gasket is abutted to the sealing assembly, and the other end of the adjusting gasket is abutted to one end of the flange close to the sealing assembly.
Specifically, the position of the flange can be adjusted along the axis direction of the central shaft by adjusting the adjusting shim, so that the gap of the rotor is adjusted, and the assembly precision is improved.
The utility model has the advantages that: the shaft end locking device is provided, the first bending part of the anti-loosening part is abutted against the side wall of the head of the shaft end locking screw, and the second bending part is abutted against the head of the rotor locking bolt or the rotor locking nut, so that the linkage between the shaft end locking screw and the rotor locking part can be realized, the shaft end locking screw and the rotor locking part can rotate reversely, the mutual limitation is realized, and the anti-loosening performance is improved; still provide a put eddy current retarder in, including bearing frame, rotor, center pin and foretell axle head locking device, axle head locking device's locking performance is good, and then has improved the shafting reliability of putting eddy current retarder in.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and examples.
FIG. 1 is a partial cross-sectional view of a centrally-mounted eddy current retarder;
FIG. 2 is an enlarged view of a portion of FIG. 1 at A;
FIG. 3 is a schematic structural view of the locking member before bending;
fig. 4 is a schematic structural view of the check member after being bent.
In fig. 1 to 4:
100. a shaft end locking device;
1. a central shaft locking mechanism; 11. a shaft end locking screw; 12. a flange; 13. a conical spring washer; 14. a flange pressing plate;
2. a rotor locking member; 21. a rotor locking bolt; 22. a rotor lock nut;
3. an anti-loosening element; 31. a first bending portion; 32. a second bending portion;
200. a rotor;
300. a central shaft;
400. a bearing seat;
500. a seal assembly;
600. and adjusting the gasket.
Detailed Description
In order to make the technical problems, technical solutions and technical effects achieved by the present invention more clear, the embodiments of the present invention will be described in further detail with reference to the accompanying drawings, and obviously, the described embodiments are only some embodiments, not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by those skilled in the art without creative efforts belong to the protection scope of the present invention.
In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings.
The first embodiment is as follows:
as shown in fig. 1 and 4, the present embodiment provides a shaft end locking device 100 for connecting a central shaft 300 and a rotor 200, comprising a central shaft locking mechanism 1, a rotor locking member 2 and a locking member 3, wherein the central shaft locking mechanism 1 comprises a shaft end locking screw 11 and a flange 12, the shaft end locking screw 11 penetrates through a central hole of the flange 12 and fixes the flange 12 at the end of the central shaft 300; the rotor locker 2 comprises a rotor locking bolt 21 and a rotor locking nut 22 which are connected by screw threads, and the rotor 200 is fixed on the flange 12 by the rotor locker 2; the locking piece 3 is sleeved on the shaft end locking screw 11 or the rotor locking piece 2 and located on one side, away from the central shaft 300, of the flange 12, a first bending portion 31 which is bent outwards is arranged at one end of the locking piece 3, the first bending portion 31 abuts against the side wall of the head of the shaft end locking screw 11, a second bending portion 32 which is bent outwards is arranged at the other end of the locking piece, and the second bending portion 32 abuts against the side wall of the head of the rotor locking bolt 21 or the side wall of the rotor locking nut 22. In this embodiment, shaft end locking screw 11 sets up to one, five rotor retaining members 2 set up on flange 12 around shaft end locking screw 11, locking piece 3 cover is established on shaft end locking screw 11 and is located one side that the head of shaft end locking screw 11 is close to flange 12, the lateral wall of the head of shaft end locking screw 11 is propped to first bending portion 31 of locking piece 3, second bending portion 32 is propped one side that rotor lock nut 22 is close to shaft end locking screw 11, locking piece 3 can realize the linkage of shaft end locking screw 11 and rotor lock nut 22. Due to impact, when the shaft end locking screw 11 is unscrewed counterclockwise, the first bending part 31 rotates counterclockwise along with the shaft end locking screw, so that the anti-loosening element 3 rotates counterclockwise, the second bending part 32 at the other end drives the rotor locking nut 22 to be screwed and locked clockwise, and the shaft end locking screw 11 is prevented from being unscrewed counterclockwise continuously; on the contrary, owing to receive the impact, when rotor lock nut 22 anticlockwise unscrewed, second bending portion 32 received and supported pressure clockwise rotation, and then prevents that loose piece 3 clockwise rotation, drives axle head locking screw 11 clockwise lock through the first bending portion 31 of the other end and dies, has restricted rotor lock nut 22 to continue anticlockwise unscrew, on the one hand, has improved axle head locking device 100's locking, and on the other hand only sets up an axle head locking screw 11, compact structure. In other embodiments, one end of the locking member 3 is sleeved on the shaft end locking screw 11, one end of the locking member 3 is provided with a first bending portion 31 which is bent outwards, the first bending portion 31 abuts against the side wall of the head of the shaft end locking screw 11, and the other end is located between any two of the rotor locking members 2. Due to impact, when the shaft end locking screw 11 is unscrewed anticlockwise, the first bending part 31 drives the anti-loosening element 3 to rotate synchronously, but the other end of the anti-loosening element 3 is limited by the two rotor locking elements 2, the anti-loosening element 3 stops rotating continuously, and further the shaft end locking screw 11 is prevented from unscrewing anticlockwise continuously.
As shown in fig. 3 and 4, the first and second bent portions 31 and 32 are bent outward at an angle of 90 ° to 120 °. When the bending angles of the first bending portion 31 and the second bending portion 32 are 90 to 120 degrees, the deformation degree of the bending portion of the locking member 3 tends to rigid deformation, and plastic recovery is not easy, so that reliability is improved.
The first bent portion 31 is attached to a side wall of the head of the shaft end locking screw 11, and the second bent portion 32 is attached to the head of the rotor locking bolt 21 or a side wall of the rotor locking nut 22. In this embodiment, the second bending portion 32 is attached to the sidewall of the rotor locking nut 22, the first bending portion 31 is attached to the sidewall of the head of the shaft end locking screw 11, so that the synchronism of the locking member 3 and the shaft end locking screw 11 is improved, the second bending portion 32 is attached to the sidewall of the rotor locking nut 22, so that the acting area of the second bending portion 32 is increased, the transmission performance of the locking member 3 is improved, and further, the linkage between the rotor locking member 2 and the shaft end locking screw 11 is improved.
As shown in fig. 1, the end of the flange 12 remote from the central shaft 300 is provided with a recess in which the head of the shaft end locking screw 11, and the head of the rotor locking bolt 21 or the rotor locking nut 22 are disposed. In this embodiment, the groove is formed in the outer end surface of the flange 12, the rotor locking nut 22 is located in the groove of the flange 12, and the groove of the flange 12 can form a position avoidance protection for the shaft locking screw 11 and the rotor locking member 2, so that the deformation or looseness of the shaft locking screw 11 and the rotor locking member 2 caused by the collision of foreign objects is prevented, and the reliability is improved.
In this embodiment, the central shaft locking mechanism 1 further includes a tapered elastic pad 13, and the tapered elastic pad 13 is sleeved on the shaft end locking screw 11 and is located on one side of the flange 12 away from the central shaft 300. The central shaft locking mechanism 1 further comprises a flange pressing plate 14, and the shaft end locking screw 11 presses the flange 12 to the end of the central shaft 300 through the flange pressing plate 14. The conical elastic pad 13 is arranged between the flange pressing plate 14 and the locking piece 3, the flange pressing plate 14 is arranged on a center hole of the flange 12 in a covering mode, the shaft end locking screw 11 is used for fixing the flange 12 on the end portion of the central shaft 300 through the flange pressing plate 14, the conical elastic pad 13 can be used for preventing the shaft end locking screw 11 from being locked, and the locking performance is further improved.
In this embodiment, the surfaces of the shaft end locking screw 11 and the flange pressure plate 14 are provided with corrosion-resistant coatings, and the corrosion-resistant coatings are zinc-chromium coatings, so that the service lives of the shaft end locking screw 11 and the flange pressure plate 14 can be prolonged.
Example two:
as shown in fig. 1, the present embodiment provides a center-mounted eddy current retarder, which includes a bearing seat 400, a rotor 200, a central shaft 300, and the shaft end locking device 100, where the bearing seat 400 is rotatably connected to the central shaft 300 and can support the central shaft 300, a flange 12 is fixed to an end of the central shaft 300, and the rotor 200 is connected to the central shaft 300 through the flange 12. The bearing housing 400 is rotatably coupled to the center shaft 300 by means of an embedded bearing, and the shaft end locking device 100 couples the rotor 200 to the center shaft 300. The central shaft locking mechanism 1 fixes the flange 12 to the end of the central shaft 300 by a shaft end locking screw 11, and when the central shaft 300 rotates, the flange 12 rotates in synchronization, and further, the rotor 200 fixed to the flange 12 by the rotor locking member 2 also rotates in synchronization. On one hand, the shaft end locking device 100 has good anti-loosening performance, and the shaft system of the central eddy current retarder has high reliability; on the other hand, only one shaft end locking screw 11 is arranged, and the structure is compact.
As shown in fig. 2, a sealing assembly 500 is sleeved on an end of the central shaft 300, and the sealing assembly 500 is located at an opening of the bearing seat 400 and can seal the opening of the bearing seat 400. Seal assembly 500 includes oil blanket ring and dust cover, and the dust cover is located on center pin 300 and is covered the opening of bearing frame 400, and the one end butt bearing of oil blanket ring, other end butt dust cover, seal assembly 500 can seal the fit clearance of protection bearing frame 400 and center pin 300 and the opening of bearing frame 400. The central shaft 300 is sleeved with an adjusting shim 600, one end of the adjusting shim 600 abuts against the sealing assembly 500, and the other end abuts against one end of the flange 12 close to the sealing assembly 500. One end of the adjusting shim 600 is abutted to the dust cover, the other end of the adjusting shim 600 is abutted to one end of the flange 12 close to the dust cover and can support the flange 12, the position of the flange 12 can be adjusted by adjusting the height of the adjusting shim 600 along the axis direction of the central shaft 300, and then the position of the rotor 200 in the axis direction of the central shaft 300 is adjusted, so that the assembling precision is improved.
In the description herein, it is to be understood that the terms "upper," "lower," "left," "right," and the like are used in an orientation or positional relationship based on what is shown in the drawings for convenience of description and simplicity of operation, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be considered limiting. Furthermore, the terms "first" and "second" are used merely for descriptive purposes and are not intended to have any special meaning.
In the description herein, references to the description of "an embodiment," "an example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example.
In addition, the foregoing is only the preferred embodiment of the present invention and the technical principles applied thereto. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail with reference to the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the scope of the present invention.
Claims (10)
1. A shaft end locking device for connecting a central shaft to a rotor, comprising:
the central shaft locking mechanism (1) comprises a shaft end locking screw (11) and a flange (12), wherein the shaft end locking screw (11) penetrates through a central hole of the flange (12) and fixes the flange (12) at the end part of the central shaft;
the rotor locking piece (2) comprises a rotor locking bolt (21) and a rotor locking nut (22) which are in threaded connection, and the rotor is fixed on the flange (12) through the rotor locking piece (2);
prevent loose piece (3), the cover is established on axle head locking screw (11) or rotor retaining member (2) and be located flange (12) are kept away from one side of center pin, the one end of preventing loose piece (3) is provided with first bending portion (31) of outside bending, first bending portion (31) butt the lateral wall of the head of axle head locking screw (11), the other end are provided with the second bending portion (32) of outside bending, second bending portion (32) butt the lateral wall of the head of rotor locking bolt (21) or the lateral wall of rotor lock nut (22).
2. Shaft end locking device according to claim 1, characterized in that the first bending part (31) and the second bending part (32) are bent outwards at an angle of 90 ° -120 °.
3. Shaft end locking device according to claim 2, characterized in that the first bent portion (31) abuts against a side wall of the head of the shaft end locking screw (11), and the second bent portion (32) abuts against a head of the rotor locking bolt (21) or a side wall of the rotor locking nut (22).
4. Shaft end locking device according to claim 1, characterized in that the end of the flange (12) remote from the central shaft is provided with a recess, in which the head of the shaft end locking screw (11) and the head of the rotor locking bolt (21) or the rotor locking nut (22) are arranged.
5. Shaft end locking device according to claim 1, characterized in that the central shaft locking mechanism (1) further comprises a tapered elastic pad (13), the tapered elastic pad (13) is sleeved on the shaft end locking screw (11) and is positioned on one side of the flange (12) far away from the central shaft.
6. Shaft end locking device according to claim 1, characterized in that the central shaft locking mechanism (1) further comprises a flange pressure plate (14), and the shaft end locking screw (11) presses the flange (12) to the end of the central shaft through the flange pressure plate (14).
7. Shaft end locking device according to claim 6, characterized in that the surfaces of the shaft end locking screw (11) and the flange pressure plate (14) are provided with corrosion-resistant coatings.
8. A centrally-mounted eddy current retarder, which is characterized by comprising a bearing seat (400), a rotor (200), a central shaft (300) and the shaft end locking device (100) as claimed in any one of claims 1 to 7, wherein the bearing seat (400) is rotatably connected with the central shaft (300) and can support the central shaft (300), the flange (12) is fixed at the end of the central shaft (300), and the rotor (200) is connected with the central shaft (300) through the flange (12).
9. The centrally-mounted eddy current retarder according to claim 8, wherein a sealing assembly (500) is sleeved on an end of the central shaft (300), and the sealing assembly (500) is located at the opening of the bearing seat (400) and can seal the opening of the bearing seat (400).
10. The centrally-mounted eddy current retarder according to claim 9, wherein a shim (600) is sleeved on the central shaft (300), one end of the shim (600) abuts against the sealing assembly (500), and the other end abuts against one end of the flange (12) close to the sealing assembly (500).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021570657.9U CN213017215U (en) | 2020-07-31 | 2020-07-31 | Shaft end locking device and middle eddy current retarder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021570657.9U CN213017215U (en) | 2020-07-31 | 2020-07-31 | Shaft end locking device and middle eddy current retarder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213017215U true CN213017215U (en) | 2021-04-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021570657.9U Active CN213017215U (en) | 2020-07-31 | 2020-07-31 | Shaft end locking device and middle eddy current retarder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213017215U (en) |
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2020
- 2020-07-31 CN CN202021570657.9U patent/CN213017215U/en active Active
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