CN210653122U - Axle box bearing axle head bolt anti loosening structure of high speed railway - Google Patents
Axle box bearing axle head bolt anti loosening structure of high speed railway Download PDFInfo
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- CN210653122U CN210653122U CN201921319036.0U CN201921319036U CN210653122U CN 210653122 U CN210653122 U CN 210653122U CN 201921319036 U CN201921319036 U CN 201921319036U CN 210653122 U CN210653122 U CN 210653122U
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- 238000006073 displacement reaction Methods 0.000 claims abstract description 5
- 239000007787 solid Substances 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000005192 partition Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Abstract
The utility model relates to a high-speed railway axle box bearing axle head bolt anti-loosening structure, including anti-loosening piece, protecgulum, bolt and axle, the terminal surface partition circumference of axle is provided with three screw holes, is provided with the hex bolts in each screw hole respectively, and the protecgulum that is used for restricting axle box bearing axial displacement sets up between axle end face and bolt head medial surface, and the anti-loosening piece sets up between protecgulum and bolt head medial surface; the whole stamping workpiece that is isosceles triangle that is of anti-loosening piece, the equal fillet in the outside of every interior angle of triangle-shaped, the inboard of every interior angle is provided with the through-hole that is used for the bolt to pass respectively, every through-hole drill way outside all is provided with two limiting plates that are used for injecing the bolt head rotation. The utility model discloses the fixing bolt who prevents the axle head that can be fine is not hard up, and the bolt of being convenient for is dismantled, and the locking piece that designs simultaneously still has high reliability, high friction, low wear, advantage that manufacturing cost is low.
Description
Technical Field
The utility model relates to an assembly technique of high-speed railway bearing specifically is a high-speed railway axle box bearing axle head bolt anti loosening structure.
Background
The axle box bearing of the high-speed railway not only plays a role in supporting and rotating in the running process of a train, but also has the function of axial positioning, the realization of the function needs other parts to limit the bearing besides the interference fit with the axle, and the bolt at the axle end limits the axial displacement of the axle box bearing through the front cover. The high-speed train set has high running speed, generates large vibration impact on the shaft end bolt of the bearing of the axle box, and easily loosens the bolt, so that the front cover loses the axial positioning function of the bearing of the axle box, and potential safety hazards are caused to train running.
At present, common bolt anti-loosening structure or for set up the round pin axle that is used for injecing the bolt rotation in the bolt head outside, perhaps weld the bolt head with by the fastener together, perhaps be the combination of above-mentioned two kinds of condition, when being applied to the axle head bolt of high-speed railway axle box bearing and locking, the problem that its exists is not quick detachable when using, influences part replacement efficiency. And the anti-loosening sleeve is used, for example, the anti-loosening device for the pitch adjusting blade root bolt in patent CN201910284223.8 and the anti-loosening sleeve for the welding bolt in patent CN201720818056.7, when the anti-loosening device is applied to the anti-loosening of the shaft end bolt of the high-speed railway axle box bearing, the axle box working space is limited due to the small area of the shaft end, and the anti-loosening device is not easy to disassemble. In use, the high-speed railway bearing is high in maintenance frequency, so that the normal operation of a railway is not influenced, the anti-loosening effect is required to be good, and meanwhile, the replacement of parts is also extremely important.
Disclosure of Invention
The utility model aims at providing a high-speed railway axle box bearing axle head bolt anti loosening structure, through the anti-loosening piece of design stamping forming between the inboard and axle head location protecgulum of bolt head, the fixing bolt who prevents the axle head that not only can be fine is not hard up, and convenient to detach bolt still has high reliability, high friction, low wearing and tearing, low-cost characteristic simultaneously.
In order to achieve the above object, the utility model discloses a following technical scheme realizes: a shaft end bolt anti-loosening structure of a high-speed railway axle box bearing comprises an anti-loosening sheet, a front cover, a bolt and a shaft, wherein three threaded holes are formed in the circumference of the end surface of the shaft in an equal division mode, a hexagon bolt is arranged in each threaded hole, the front cover used for limiting axial displacement of the axle box bearing is arranged between the end surface of the shaft and the inner side surface of the head of the bolt, and the anti-loosening sheet is arranged between the front cover and the inner side surface of the head of the bolt; the whole stamping workpiece that is isosceles triangle that is of anti-loosening piece, the equal radius angle in the outside at every interior angle of triangle-shaped, the inboard at every interior angle is provided with the through-hole that is used for the bolt to pass respectively, every through-hole drill way outside all is provided with two limiting plates that are used for injecing the bolt head rotation, the limiting plate is whole to be the arc, and the inboard side of its arc is solid as an organic whole with anti-loosening piece, is provided with the contained angle between the arc limit of limiting plate and the anti-loosening piece, the contained angle is greater than.
The two limiting plates outside the orifice of each through hole on the anti-loosening sheet are symmetrical about the bisector of the inner angle of the through hole, and the included angle between the circle centers of the two limiting plates and the line between the circle centers of the through holes is 90-120 degrees.
The middle part of the anti-loosening piece is provided with a lightening hole.
The front cover is integrally of a circular plate-shaped structure, one end face of the front cover is in contact with the end face of the shaft, three bosses are arranged on the other end face of the front cover corresponding to the three threaded holes in the end face of the shaft, and an axial through hole for a bolt to pass through is formed in the middle of each boss.
The utility model discloses an installation principle: three bolts are respectively penetrated on the superposed front cover and the superposed anti-loosening sheet and fastened on the shaft end, the front cover positions the end surface of the bearing, the limiting plates on the anti-loosening sheet are pulled up one by hands or a flat screwdriver at the moment, and the arc edges of the limiting plates are tightly propped against the side edges of the head part of the hexagon bolt by means of the self-yielding deformation of the limiting plates, so that the bolts are prevented from rotating and loosening; when the axle box bearing needs to be replaced, the limiting plate is pulled open, and the bolt is loosened for replacement; the anti-loosening sheet can be repeatedly used for many times according to the fatigue limit of the material.
The utility model has the advantages that: the locking piece has the advantages of being capable of well preventing the fixing bolt at the shaft end from loosening, convenient to detach the bolt, high in reliability, high in friction, low in abrasion and low in manufacturing cost.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is a front view of the present invention.
Figure 3 is a schematic view of an anti-loosening patch.
Fig. 4 is a sectional view taken along the direction a in fig. 3.
In the figure, the anti-loosening sheet 1, the anti-loosening sheet 2, the front cover 3, the bolt 4, the shaft 5, the limiting plate 6, the lightening hole 7 and the boss are arranged.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
As shown in the attached drawings 1, 2, 3 and 4 of the specification, the anti-loose structure for the axle end bolt of the axle box bearing of the high-speed railway comprises an anti-loose sheet 1, a front cover 2, a bolt 3 and an axle 4, wherein three threaded holes are formed in the circumference of the end surface of the axle 4 in an equal division manner, a hexagon bolt 3 is respectively arranged in each threaded hole, the front cover 2 for limiting the axial displacement of the axle box bearing is arranged between the end surface of the axle 4 and the inner side surface of the head of the bolt 3, and the anti-loose sheet 1 is arranged between the front cover 2 and the inner side surface of; the whole stamping workpiece that is isosceles triangle that is of anti-loosening piece 1, the equal radius angle in the outside at every interior angle of triangle-shaped, the inboard at every interior angle is provided with the through-hole that is used for the bolt to pass respectively, every through-hole drill way outside all is provided with two limiting plates 5 that are used for injecing the bolt head rotation, limiting plate 5 is whole to be the arc, and the inboard side of its arc is solid as an organic whole with anti-loosening piece 1, is provided with the contained angle between limiting plate 5's arc limit and the anti-loosening piece 1, the contained angle is greater than 15. In the structure, the three bolts 3 are combined through the anti-loosening sheet 1, so that the anti-loosening structure is convenient to stabilize; the anti-loosening sheet 1 is designed as a stamping part, so that the processing is easy and the manufacturing cost is low; limiting plate 5 and anti-loosening sheet 1 are solid as an organic whole, rely on the yielding deformation of limiting plate 5 self to carry out the position to 3 head sides of every bolt and prescribe a limit to easy operation, swift.
The two limiting plates 5 outside the orifice of each through hole on the anti-loosening sheet 1 are symmetrical about the bisector of the angle of the inner angle of the through hole, and the included angle between the circle centers of the two limiting plates 5 and the line between the circle centers of the through holes is 90-120 degrees. Such angle can carry out the position to two sides of 3 heads of bolt and prescribe a limit to, increases the reliability, and the while structure is pleasing to the eye, is convenient for the preparation processing of locking piece 1.
The middle part of the anti-loosening sheet 1 is provided with a lightening hole 6. It also has the function of observing the combination state of the anti-loosing sheet 1 and the front cover 2.
The whole front cover 2 is of a circular plate-shaped structure, one end face of the front cover is in contact with the end face of the shaft 4, three bosses 7 are arranged on the other end face of the front cover and correspond to three threaded holes in the shaft end, and an axial through hole for the bolt 3 to penetrate through is formed in the middle of each boss 7. The three bosses 7 are designed to enhance the firmness of the contact part and prevent the looseness-prevention piece 1 from vibrating when the shaft 4 rotates due to warping deformation.
The utility model discloses a use method: the initial position of the limiting plate 5 inclines towards the outer side direction of the bolt hole, the angle of the limiting plate is convenient for being pulled by fingers or tools, and the installation and the fastening of the bolt 3 are not influenced; after the bolt 3 is fastened, the limiting plate 5 is pulled up, so that the limiting plate 5 inclines towards the inner side direction of the bolt hole, the arc edge of the limiting plate 5 tightly supports the hexagonal side edge of the head of the bolt 3, and force can be applied to the middle of the limiting plate 5 when necessary, so that the limiting plate 5 is integrally deformed and dented, and the supporting firmness is enhanced; when the bolt 3 is disassembled, the limiting plate 5 can be tilted by hands or a flat screwdriver and then is pulled to a position which does not influence the rotation of the head of the bolt 3.
The part of the utility model not detailed is prior art.
Claims (4)
1. The utility model provides a high-speed railway axle box bearing axle head bolt anti loosening structure, characterized by: the anti-loosening device comprises an anti-loosening sheet, a front cover, bolts and a shaft, wherein three threaded holes are formed in the circumference of the end face of the shaft in an equal division mode, a hexagon bolt is arranged in each threaded hole, the front cover used for limiting the axial displacement of the bearing of the shaft box is arranged between the end face of the shaft and the inner side face of the head of the bolt, and the anti-loosening sheet is arranged between the front cover and the inner side face of the head of the bolt; the whole stamping workpiece that is isosceles triangle that is of anti-loosening piece, the equal radius angle in the outside at every interior angle of triangle-shaped, the inboard at every interior angle is provided with the through-hole that is used for the bolt to pass respectively, every through-hole drill way outside all is provided with two limiting plates that are used for injecing the bolt head rotation, the limiting plate is whole to be the arc, and the inboard side of its arc is solid as an organic whole with anti-loosening piece, is provided with the contained angle between the arc limit of limiting plate and the anti-loosening piece, the contained angle is greater than.
2. The axle box bearing axle end bolt anti-loosening structure of the high-speed railway according to claim 1, which is characterized in that: the two limiting plates outside the orifice of each through hole on the anti-loosening sheet are symmetrical about the bisector of the inner angle of the through hole, and the included angle between the circle centers of the two limiting plates and the line between the circle centers of the through holes is 90-120 degrees.
3. The axle box bearing axle end bolt anti-loosening structure of the high-speed railway according to claim 1, which is characterized in that: the middle part of the anti-loosening piece is provided with a lightening hole.
4. The axle box bearing axle end bolt anti-loosening structure of the high-speed railway according to claim 1, which is characterized in that: the front cover is integrally of a circular plate-shaped structure, one end face of the front cover is in contact with the end face of the shaft, three bosses are arranged on the other end face of the front cover corresponding to the three threaded holes in the end face of the shaft, and an axial through hole for a bolt to pass through is formed in the middle of each boss.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921319036.0U CN210653122U (en) | 2019-08-15 | 2019-08-15 | Axle box bearing axle head bolt anti loosening structure of high speed railway |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921319036.0U CN210653122U (en) | 2019-08-15 | 2019-08-15 | Axle box bearing axle head bolt anti loosening structure of high speed railway |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210653122U true CN210653122U (en) | 2020-06-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921319036.0U Active CN210653122U (en) | 2019-08-15 | 2019-08-15 | Axle box bearing axle head bolt anti loosening structure of high speed railway |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210653122U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110316218A (en) * | 2019-08-15 | 2019-10-11 | 洛阳Lyc轴承有限公司 | A kind of high-speed railway axle box bearing bolts at axle end anti-loose structure |
-
2019
- 2019-08-15 CN CN201921319036.0U patent/CN210653122U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110316218A (en) * | 2019-08-15 | 2019-10-11 | 洛阳Lyc轴承有限公司 | A kind of high-speed railway axle box bearing bolts at axle end anti-loose structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 471039 No. 96, Jianxi, Luoyang District, Henan, Jianshe Road Patentee after: Luoyang Bearing Group Co.,Ltd. Country or region after: Zhong Guo Address before: 471039 No. 96, Jianxi, Luoyang District, Henan, Jianshe Road Patentee before: LUOYANG LYC BEARING Co.,Ltd. Country or region before: Zhong Guo |
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| CP03 | Change of name, title or address |