CN201963689U - Tower crane bolt - Google Patents

Tower crane bolt Download PDF

Info

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
screw rod
tower crane
screw thread
nut
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
Application number
CN2011200198086U
Other languages
Chinese (zh)
Inventor
邵云方
苏友份
周世团
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ZHEJIANG DITE HIGH INTENSION BOLT CO Ltd
Original Assignee
ZHEJIANG DITE HIGH INTENSION BOLT CO Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by ZHEJIANG DITE HIGH INTENSION BOLT CO Ltd filed Critical ZHEJIANG DITE HIGH INTENSION BOLT CO Ltd
Priority to CN2011200198086U priority Critical patent/CN201963689U/en
Application granted granted Critical
Publication of CN201963689U publication Critical patent/CN201963689U/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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

A kind of tower crane bolt
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.
CN2011200198086U 2011-01-21 2011-01-21 Tower crane bolt Expired - Lifetime CN201963689U (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (2)

* Cited by examiner, † Cited by third party
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

Similar Documents

Publication Publication Date Title
CN201963689U (en) Tower crane bolt
CN202934488U (en) Internal hexagon wrench
CN202914476U (en) Expansion bolt
CN201896833U (en) Dodecagonal high strength flexible bolt
CN202118077U (en) Hexagonal flange surface bolt of nuclear power sluice gate
CN202673938U (en) Positioning installation screw bolt with controlled torque
CN202273964U (en) Pull ring connecting piece
CN206190707U (en) Socket cap connecting screw
CN202971504U (en) External hexagon high-intensity bolt used for power transmission tower
CN202326908U (en) Shackle with counter bores
CN201763754U (en) High-strength bolt connection adaptor
CN202833536U (en) Self-positioning structure for threaded connection of plastics with metal
CN105605062A (en) Sucker-bearing bolt
CN203702807U (en) Double-end stud
CN202318163U (en) Magnetic attraction sleeve
CN203476240U (en) Oil drill stem female joint with root stress groove threads
CN203516375U (en) Self-tapping anti-disengaging bolt
CN201802342U (en) Conical sealing plug for cut-off device of oil and gas extraction well
CN202812453U (en) Valve stem and spool connecting structure
CN204327715U (en) The nonstandard pipe nut that a kind of concrete pump connecting tube is special
CN203189443U (en) Three-way mounting body
CN202851575U (en) Cross-shaped large flat head screw for nuclear power
CN203297279U (en) Novel nut
CN204686739U (en) A kind of monkey wrench jaw positioner
CN202812468U (en) Cable clamp

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