CN202381489U - Meet traction bolt for tramcar used in mine - Google Patents
Meet traction bolt for tramcar used in mine Download PDFInfo
- Publication number
- CN202381489U CN202381489U CN2011205589480U CN201120558948U CN202381489U CN 202381489 U CN202381489 U CN 202381489U CN 2011205589480 U CN2011205589480 U CN 2011205589480U CN 201120558948 U CN201120558948 U CN 201120558948U CN 202381489 U CN202381489 U CN 202381489U
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- China
- Prior art keywords
- bolt
- meet
- traction
- tramcar
- traction bolt
- 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
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Abstract
The utility model relates to a meet traction bolt for a tramcar used in a mine, which belongs to the field of the traction device for the tramcar used in the mine. The meet traction bolt comprises a traction bolt, a meet head is arranged at one end of the traction bolt, and double nuts are arranged at the other end. The meet traction bolt is characterized in that a ring-shaped keyway is arranged at the top of one end of the traction provided with double nuts, the diameter of the ring-shaped keyway is less than the small diameter of the threads of the traction bolt, a ring-shaped key is fixed inside the ring-shaped keyway, and the ring-shaped key is fixed through a stud. The meet traction bolt has the advantages of simple structure and reliable connection, the meet traction bolt also solves the problem that the tramcar is unhooked because that double nuts is loosened for long time use, the service life of the traction device for the tramcar is prolonged, the production efficiency is improved, and the production safety is effectively ensured, and the personal safety of underground workers is further ensured.
Description
Technical field
The utility model provides a kind of mining car haul bolt of meeting and discussing, and belongs to mining car haul device field.
Background technique
Collide between the mine car or be pulled in the process; Leave decrement during the buffer spring assembling; By compression or the momentary action power lower nut stretched of traction and the junction plane of hook housing must have certain distance; And draw bolt and nut be coarse thread, because of the two screw thread junction plane fit tolerance is bigger, also has certain clearance.Cotter pin is in use often damaged because of following two kinds of factors: 1, tunnel moisture corrosion; 2, the impulsive load of locomotive haulage mine car moment generation makes nut frequently accept impact endurance test shock, and nut can be made its cut-out along the loosening gradually generation axial float of the screw thread on the draw bolt.After cotter pin is destroyed; Time is once long double nut loosening and releasing; Locomotive haulage power mainly passes to mine car through the thread joint face of draw bolt and double nut again, thus when double nut from the draw bolt after the dropout landing, whole traction delivery system will be destroyed; Must cause mine car to break off relations and the generation security incident, influence carrying out in order of down-hole transportation production.In order to prevent the generation of similar hazard event, the safety coefficient when improving the mine car operation must be provided with a kind of safe and reliable anti-thread-releasing device and solve this problem.
The model utility content
According to above deficiency of the prior art, the problem that the utility model will solve is: provide a kind of and can solve problem, the safe and reliable mining car haul of anti-thread-releasing that the double nut loosening and releasing causes mine car the to break off relations bolt of meeting and discussing.
The utility model solves the technological scheme that its technical problem adopted: the mining car haul bolt of meeting and discussing; Comprise draw bolt, an end setting of draw bolt is met and discussed, and the other end is provided with double nut; It is characterized in that: the top that draw bolt is provided with an end of double nut is provided with annular keyway; Annular keyway diameter is less than draw bolt screw thread path, annular keyway internal fixation annular key, and annular key is fixed through double-screw bolt.
Even the cotter pin behind the increase annular key on the double nut of draw bolt was lost efficacy; Because annular keyway diameter is less than draw bolt screw thread path; Be equivalent to in the middle of annular key " embedding " draw bolt and stop that double nut continues to take place play, so double nut just the phenomenon of threading off can not occur.The main effect of double-screw bolt is to be fixed annular key, prevents that it from coming off.
Wherein preferred version is:
On the draw bolt in the described double-screw bolt outside cotter pin is set.Cotter pin shields, and is the non-stress part, can not be damaged.
The mining car haul of the utility model beneficial effect that bolt had of meeting and discussing is: simple in structure; Connect reliably, solved double nut and used the loosening and releasing that causes for a long time and cause mine car unhook problem, improved the working life of car haul device greatly; Improved manufacturing efficiency; Guaranteed safety in production effectively, simultaneously, underground labour's life safety is further ensured.
Description of drawings
Fig. 1 is the user mode schematic representation of the utility model;
Fig. 2 is the structural representation of the utility model;
Wherein: 1, meet and discuss 2, draw bolt 3, end support 4, spring 5, hook housing 6, double nut 7, double-screw bolt 8, annular key 9, cotter pin.
Embodiment
Below in conjunction with accompanying drawing the embodiment of the utility model is done and to further describe:
Like Fig. 1, shown in Figure 2; One end setting of draw bolt 2 meets and discusses 1; The other end is provided with double nut 6, and the top that draw bolt 2 is provided with an end of double nut 6 is provided with annular keyway, and annular keyway diameter is less than draw bolt 2 screw thread paths; Annular keyway internal fixation annular key 8, annular key 8 is fixing through double-screw bolt 7.
On the draw bolt 2 in double-screw bolt 7 outsides cotter pin 9 is set.Cotter pin 9 shields, and is the non-stress part, can not be damaged.
The draw bolt mentioned in the utility model 2 is common existing technology, its setting and be used for industry technician and grasp.
Working principle and using process:
During use, draw bolt 2 is arranged on the end support 3 through spring 4 and hook housing 5.Even the cotter pin on the double nut 6 of increase annular key 8 back draw bolts 2 was lost efficacy; Because annular keyway diameter is less than draw bolt 2 screw thread paths; Be equivalent to in the middle of annular key 8 " embedding " draw bolt 2 and stop that double nut 6 continues to take place plaies, so double nut 6 just the phenomenon of threading off can not occur.
Claims (2)
1. mining car haul bolt of meeting and discussing; Comprise draw bolt, an end setting of draw bolt is met and discussed, and the other end is provided with double nut; It is characterized in that: the top that draw bolt is provided with an end of double nut is provided with annular keyway; Annular keyway diameter is less than draw bolt screw thread path, annular keyway internal fixation annular key, and annular key is fixed through double-screw bolt.
2. the mining car haul according to claim 1 bolt of meeting and discussing is characterized in that: on the draw bolt in the described double-screw bolt outside cotter pin is set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205589480U CN202381489U (en) | 2011-12-28 | 2011-12-28 | Meet traction bolt for tramcar used in mine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205589480U CN202381489U (en) | 2011-12-28 | 2011-12-28 | Meet traction bolt for tramcar used in mine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202381489U true CN202381489U (en) | 2012-08-15 |
Family
ID=46629994
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205589480U Expired - Fee Related CN202381489U (en) | 2011-12-28 | 2011-12-28 | Meet traction bolt for tramcar used in mine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202381489U (en) |
-
2011
- 2011-12-28 CN CN2011205589480U patent/CN202381489U/en not_active Expired - Fee Related
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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: 20120815 Termination date: 20141228 |
|
| EXPY | Termination of patent right or utility model |