CN201963689U - Tower crane bolt - Google Patents
Tower crane bolt Download PDFInfo
- Publication number
- CN201963689U CN201963689U CN2011200198086U CN201120019808U CN201963689U CN 201963689 U CN201963689 U CN 201963689U CN 2011200198086 U CN2011200198086 U CN 2011200198086U CN 201120019808 U CN201120019808 U CN 201120019808U CN 201963689 U CN201963689 U CN 201963689U
- Authority
- CN
- China
- Prior art keywords
- screw rod
- screw
- screw thread
- tower crane
- diameter
- 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 - Lifetime
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Abstract
The utility model relates to a tower crane bolt, which comprises a screw bar and a protective cap. Screw threads are arranged on the screw bar, and a diameter of the screw bar without the screw threads is longer than that of the screw bar with the screw threads. A chamfer is arranged on a crossing portion of the screw bar with the screw threads and the screw bar without the screw threads. The tower crane bolt adopts the technical scheme to reduce stress of the crossing portion of the screw bar with the screw threads and the screw bar without the screw threads.
Description
Technical field
The utility model relates to a kind of tower crane bolt.
Background technique
At present, existing a kind of tower crane bolt has generally comprised screw rod, and screw rod one end is provided with helmet, and screw rod is provided with screw thread, the nut that is used for this structural tower hanger bolt, include nut body and be arranged on tapped hole on the nut body, still, the tower crane bolt of this structure in use, fixture contacts with nut one end face, screw thread position on the screw rod is with not establish the stress of screw thread position intersection location bigger, if long-time the use can make tower crane bolt generation phenomenon of rupture.
Summary of the invention
The purpose of this utility model: in order to overcome the defective of prior art, the utility model by the screw thread position on screw rod with do not establish screw thread position intersection location chamfering be set, thereby a kind of tower crane bolt that can reduce stress is provided.
The technical solution of the utility model: a kind of tower crane bolt, include screw rod, be arranged on the helmet of screw rod one end, screw rod is provided with screw thread, screw thread one end extends to the screw rod middle part, the other end extend to screw rod with respect to the other end that is provided with helmet one end, described screw rod is not provided with the diameter at screw thread position greater than the diameter that is provided with the screw thread position, on the described screw rod screw thread position be not provided with screw thread position intersection location and be provided with chamfering.
Adopt technique scheme, described screw rod not to be provided with screw thread position and the chamfering that is provided with intersection, screw thread position and can reduce herein stress well, improve the intensity of described screw rod, be not easy to damage.
Further improvement of the utility model: described screw rod is outward extended with cylindrical boss with respect to the other end that is provided with helmet one end, and the diameter of described boss is provided with the diameter at screw thread position less than described screw rod.
Adopt above-mentioned further improvement, the cylindrical boss that extends on the screw rod can conveniently knock screw rod, if directly knock the screw thread position, understands damaged screw, thereby has reduced the working life of tower crane bolt.
The specialized nut of the utility model tower crane bolt: include nut body, be provided with in the nut body with screw rod on the tapped hole that is complementary of screw thread, described tapped hole one end extends on the nut body end face, the other end only extends to the nut body middle part, be provided with the through hole that is communicated with described tapped hole in the described nut body, described through hole and the coaxial setting of tapped hole, it is identical that through-hole diameter and screw rod are not provided with screw thread position diameter, and described through hole and described tapped hole intersection are provided with the inclined-plane that is complementary with described chamfering.
Nut by technique scheme is provided with can cooperate well with the tower crane bolt, adopts other nut, and the effect of chamfering is bad on the tower crane bolt.
Description of drawings
Fig. 1 is the plan view of the tower crane bolt of the utility model specific embodiment;
Fig. 2 is the left view of the tower crane bolt of the utility model specific embodiment;
Fig. 3 is the structure sectional view of the nut of the utility model specific embodiment;
Fig. 4 is the plan view of the nut of the utility model specific embodiment.
Embodiment
As shown in Figure 1, 2, a kind of tower crane bolt, include screw rod 1, be arranged on the helmet 2 of screw rod 1 one ends, screw rod 1 is provided with screw thread 3, and screw thread 3 one ends extend to screw rod 1 middle part, the other end extend to screw rod 1 with respect to the other end that is provided with helmet 2 one ends, it is characterized in that: described screw rod 1 is not provided with the diameter at screw thread position greater than the diameter that is provided with the screw thread position, on the described screw rod 1 the screw thread position be not provided with screw thread position intersection location and be provided with chamfering 4.
In the utility model specific embodiment, described screw rod 1 is outward extended with cylindrical boss 11 with respect to the other end that is provided with helmet 2 one ends, and the diameter of described boss 11 is provided with the diameter at screw thread position less than described screw rod 1.
As Fig. 3, shown in 4, the nut that is used for the utility model tower crane bolt, include nut body 5, be provided with in the nut body 5 with screw rod 1 on the tapped hole 51 that is complementary of screw thread, described tapped hole 51 1 ends extend on nut body 5 end faces, the other end only extends to nut body 5 middle parts, be provided with the through hole 52 that is communicated with described tapped hole 51 in the described nut body 5, described through hole 52 and tapped hole 51 coaxial settings, it is identical that through hole 52 diameters and screw rod 1 are not provided with screw thread position diameter, and described through hole 52 is provided with the inclined-plane 53 that is complementary with described chamfering 4 with described tapped hole 51 intersections.Screw thread 3 is complementary for the tower crane bolt can screw in the tapped hole 51 well on wherein said tapped hole 51 and the tower crane bolt, guarantees that the connection of tower crane bolts and nuts is reliable.Described inclined-plane 53 is complementary for described inclined-plane 53 inclinations are identical with chamfering 4 angles with chamfering 4, and true dip direction is also identical, can fit well in chamfering 4 and inclined-plane 53.
Claims (2)
1. tower crane bolt, include screw rod, be arranged on the helmet of screw rod one end, screw rod is provided with screw thread, screw thread one end extends to the screw rod middle part, the other end extend to screw rod with respect to the other end that is provided with helmet one end, it is characterized in that: described screw rod is not provided with the diameter at screw thread position greater than the diameter that is provided with the screw thread position, on the described screw rod screw thread position be not provided with screw thread position intersection location and be provided with chamfering.
2. tower crane bolt according to claim 1 is characterized in that: described screw rod is outward extended with cylindrical boss with respect to the other end that is provided with helmet one end, and the diameter of described boss is provided with the diameter at screw thread position less than described screw rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200198086U CN201963689U (en) | 2011-01-21 | 2011-01-21 | Tower crane bolt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200198086U CN201963689U (en) | 2011-01-21 | 2011-01-21 | Tower crane bolt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201963689U true CN201963689U (en) | 2011-09-07 |
Family
ID=44526224
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200198086U Expired - Lifetime CN201963689U (en) | 2011-01-21 | 2011-01-21 | Tower crane bolt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201963689U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104235155A (en) * | 2014-09-09 | 2014-12-24 | 广东梅雁吉祥水电股份有限公司 | Easy-positioning bolt and tightening device using bolt |
| CN105370694A (en) * | 2015-12-07 | 2016-03-02 | 吴中区光福良盛机械厂 | Screw capable of being disassembled manually |
-
2011
- 2011-01-21 CN CN2011200198086U patent/CN201963689U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104235155A (en) * | 2014-09-09 | 2014-12-24 | 广东梅雁吉祥水电股份有限公司 | Easy-positioning bolt and tightening device using bolt |
| CN105370694A (en) * | 2015-12-07 | 2016-03-02 | 吴中区光福良盛机械厂 | Screw capable of being disassembled manually |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110907 |