CN204041701U - Retarder brake rail chek bolt nut - Google Patents
Retarder brake rail chek bolt nut Download PDFInfo
- Publication number
- CN204041701U CN204041701U CN201420362177.1U CN201420362177U CN204041701U CN 204041701 U CN204041701 U CN 204041701U CN 201420362177 U CN201420362177 U CN 201420362177U CN 204041701 U CN204041701 U CN 204041701U
- Authority
- CN
- China
- Prior art keywords
- bolt
- nut
- screw
- thread
- cylindrical protrusions
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 239000000463 material Substances 0.000 claims description 5
- 229910001220 stainless steel Inorganic materials 0.000 claims description 5
- 238000009434 installation Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
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- Braking Arrangements (AREA)
- Train Traffic Observation, Control, And Security (AREA)
Abstract
The utility model discloses a kind of retarder brake rail chek bolt nut, relate to for the fastening bolt and nut technical field of mechanical part.Comprise screw bolt and nut, bolt comprise screw rod and with screw rod bottom all-in-one-piece bolt head, it is leg-of-mutton outside thread that the top of screw rod is provided with thread profile, nut comprises rectangular nut body, be provided with and rectangular nut body all-in-one-piece cylindrical protrusions in the middle of the upper surface of rectangular nut body, the centre of rectangular nut body and cylindrical protrusions is provided with screw, the top squeeze of cylindrical protrusions has radial direction close up and be pressed with locking triangle pressure point, it is leg-of-mutton internal thread that the internal surface top of screw is provided with thread profile, the internal surface bottom of screw is provided with the internal thread that thread profile is rectangle, bolt and externally threaded length increase, and length increment is identical with the height of cylindrical protrusions.The utility model is reliably locking, thoroughly eliminates and loosens phenomenon, reduce the operation intensity that workman overhauls retarder, raise labour productivity.
Description
Technical field
The utility model relates to for the fastening bolt and nut technical field of mechanical part.
Background technique
The bolt and nut anti-loosing effect of retarder brake rail was poor in the past, and again because retarder brake rail often shakes and moves, bolt and nut is easily produced loosening, cause work area operator frequently to prohibit fixing bolt nut, frequently keep in repair, workload is larger.
Model utility content
The technical problems to be solved in the utility model is to provide a kind of retarder brake rail chek bolt nut, this cover locking device extends the length that is threaded between bolt and nut, and bolt and nut can self-locking mutually, reliably locking, thoroughly eliminate and loosen phenomenon, reduce the operation intensity that work area workman overhauls retarder, raise labour productivity, and this covering device structure is simple, is easy to processing, easy installation and removal, can be widely used in the jogging system of railway hump switching marshalling yard.
For solving the problems of the technologies described above, technical solution adopted in the utility model is: a kind of retarder brake rail chek bolt nut, the nut comprising bolt and be threaded connection with bolt, bolt comprise screw rod and with screw rod bottom all-in-one-piece bolt head, it is leg-of-mutton outside thread that the top of screw rod is provided with thread profile, nut comprises rectangular nut body, be provided with and rectangular nut body all-in-one-piece cylindrical protrusions in the middle of the upper surface of rectangular nut body, the centre of rectangular nut body and cylindrical protrusions is provided with screw, the top squeeze of cylindrical protrusions has radial direction close up and be pressed with locking triangle pressure point, it is leg-of-mutton internal thread that the internal surface top of screw is provided with thread profile, the internal surface bottom of screw is provided with the internal thread that thread profile is rectangle, bolt and externally threaded length increase, and length increment is identical with the height of cylindrical protrusions.
Preferably, the outside thread top of screw rod is tilted conical surface.
Preferably, the material of screw bolt and nut is 405 stainless steels.
The beneficial effect adopting technique scheme to produce is:
(1) the utility model extends the length that is threaded between bolt and nut, and bolt and nut can self-locking mutually, reliably locking, the bolt and nut of retarder brake rail was fastening for a Monday in the past, this bolt and nut about one month one is fastening, reduce the operation intensity that work area workman overhauls retarder, raise labour productivity.
(2) upper surface of the utility model rectangular nut body is middle is provided with cylindrical protrusions, so not only add the height of nut, extend the length that is threaded between bolt and nut, bolt and nut is connected firmly, not easily loosen, and the cylinder design of cylindrical protrusions both saved material, do not affect again the installation of original rectangular nut body and fastening; The top of cylindrical protrusions utilizes special pressure equipment to extrude, make its top carry out radial direction to close up, and be pressed with locking triangle pressure point, thus eliminate thread pitch realization friction anti-loosing effect, when after nut screwing clamping, radial closing in spreading, the elastic force utilizing radial direction to close up makes to screw between screw thread and compresses, and realize the mutual self-locking of bolt and nut, this anti-loose structure is simple, reliably locking, can being dismounted for multiple times and do not reduce anti-loosening property; The outside thread top of screw rod is that the design of tilted conical surface can make nut be screwed into freely or bolt of back-outing, and can not damage thread profile again.
(3) the utility model structural design meets science, mechanics principle, and structure is simple, is easy to processing, easy installation and removal, reliably locking, can be widely used in the jogging system of railway hump switching marshalling yard.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail;
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the schematic top plan view of nut in Fig. 1;
In figure, 1, bolt head; 2, screw rod; 3, outside thread; 4, rectangular nut body; 5, cylindrical protrusions; 6, radial closing in; 7, tilted conical surface; 8, locking triangle pressure point; 9, screw.
Embodiment
A kind of retarder brake rail chek bolt nut, the nut comprising bolt and be threaded connection with bolt, bolt comprise screw rod 2 and with screw rod 2 bottom all-in-one-piece bolt head 1, it is leg-of-mutton outside thread 3 that the top of screw rod 2 is provided with thread profile, nut comprises rectangular nut body 4, be provided with and rectangular nut body 4 all-in-one-piece cylindrical protrusions 5 in the middle of the upper surface of rectangular nut body 4, the centre of rectangular nut body 4 and cylindrical protrusions 5 is provided with screw 9, the top squeeze of cylindrical protrusions 5 has radial closing in 6 and is pressed with locking triangle pressure point 8, it is leg-of-mutton internal thread that the internal surface top of screw 9 is provided with thread profile, the internal surface bottom of screw 9 is provided with the internal thread that thread profile is rectangle, bolt and externally threaded length increase, and length increment is identical with the height of cylindrical protrusions.
Because retarder brake rail bolt and nut anti-loosing effect was poor in the past, work area operator is caused frequently to keep in repair, frequent taboo is solid, workload is larger, phenomenon is loosened, so redesigned chek bolt nut in be threaded length and bolt nut structure two between bolt and nut in order to eliminate bolt and nut.Cylindrical protrusions 5 is provided with in the middle of the upper surface of rectangular nut body 4, so not only add the height of nut, extend the length that is threaded between bolt and nut, bolt and nut is connected firmly, not easily loosen, and the cylinder design of cylindrical protrusions 5 both saved material, do not affect again the installation of original rectangular nut body 4 and fastening.The top of cylindrical protrusions utilizes special pressure equipment to extrude, make its top carry out radial direction to close up, and be pressed with locking triangle pressure point, thus eliminate thread pitch realization friction anti-loosing effect, when after nut screwing clamping, radial closing in spreading, the elastic force utilizing radial direction to close up makes to screw between screw thread and compresses, and realize the mutual self-locking of bolt and nut, this anti-loose structure is simple, reliably locking, can being dismounted for multiple times and do not reduce anti-loosening property.It is leg-of-mutton internal thread that the internal surface top of screw 9 is provided with thread profile, the internal surface bottom of screw 9 is provided with the design that thread profile is the internal thread of rectangle, the triangle internal thread on screw 9 top is matched with the triangle outside thread 3 of screw rod 2, and the rectangle internal thread design of screw 9 bottom makes nut be easy to screw in bolt, and locking effect can be played.Because adding cylindrical protrusions 5 in the middle of the upper surface of rectangular nut body 4, the height of nut is increased, so the length of corresponding bolt and outside thread 3 also will increase, length increment is identical with the height of cylindrical protrusions 5.Such as, the length of outside thread 3 can extend to 110mm by original 95mm.
This chek bolt nut structure is simple, is easy to processing, easy installation and removal.
Outside thread 3 top of screw rod 2 is tilted conical surface 7.This design can make nut be screwed into freely or bolt of back-outing, and can not damage thread profile again.
The material of screw bolt and nut is 405 stainless steels.405 stainless steels are ferrite type stainless steel, durable.
This locking device extends the length that is threaded between bolt and nut, and bolt and nut can self-locking mutually, reliably locking, thorough elimination loosens phenomenon, reduces the operation intensity that work area workman overhauls retarder, raises labour productivity, and this covering device structure is simple, be easy to processing, easy installation and removal, can be widely used in the jogging system of railway hump switching marshalling yard.
Claims (3)
1. a retarder brake rail chek bolt nut, the nut comprising bolt and be threaded connection with bolt, bolt comprise screw rod (2) and with screw rod (2) bottom all-in-one-piece bolt head (1), it is leg-of-mutton outside thread (3) that the top of screw rod (2) is provided with thread profile, nut comprises rectangular nut body (4), it is characterized in that: be provided with and rectangular nut body (4) all-in-one-piece cylindrical protrusions (5) in the middle of the upper surface of described rectangular nut body (4), the centre of rectangular nut body (4) and cylindrical protrusions (5) is provided with screw (9), the top squeeze of described cylindrical protrusions (5) has radial closing in (6) and is pressed with locking triangle pressure point (8), it is leg-of-mutton internal thread that the internal surface top of described screw (9) is provided with thread profile, the internal surface bottom of screw (9) is provided with the internal thread that thread profile is rectangle, the length of described bolt and outside thread (3) increases, and length increment is identical with the height of cylindrical protrusions (5).
2. retarder brake rail chek bolt nut according to claim 1, is characterized in that outside thread (3) top of described screw rod (2) is tilted conical surface (7).
3. retarder brake rail chek bolt nut according to claim 1, is characterized in that the material of described screw bolt and nut is 405 stainless steels.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420362177.1U CN204041701U (en) | 2014-07-02 | 2014-07-02 | Retarder brake rail chek bolt nut |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420362177.1U CN204041701U (en) | 2014-07-02 | 2014-07-02 | Retarder brake rail chek bolt nut |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204041701U true CN204041701U (en) | 2014-12-24 |
Family
ID=52242370
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420362177.1U Expired - Fee Related CN204041701U (en) | 2014-07-02 | 2014-07-02 | Retarder brake rail chek bolt nut |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204041701U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112727895A (en) * | 2020-12-22 | 2021-04-30 | 中国北方发动机研究所(天津) | Bolt and nut connection anti-loosening locking device and anti-loosening measure |
-
2014
- 2014-07-02 CN CN201420362177.1U patent/CN204041701U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112727895A (en) * | 2020-12-22 | 2021-04-30 | 中国北方发动机研究所(天津) | Bolt and nut connection anti-loosening locking device and anti-loosening measure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141224 |