CN202265770U - Steel draw bar - Google Patents
Steel draw bar Download PDFInfo
- Publication number
- CN202265770U CN202265770U CN2011202785003U CN201120278500U CN202265770U CN 202265770 U CN202265770 U CN 202265770U CN 2011202785003 U CN2011202785003 U CN 2011202785003U CN 201120278500 U CN201120278500 U CN 201120278500U CN 202265770 U CN202265770 U CN 202265770U
- Authority
- CN
- China
- Prior art keywords
- rod
- adjusting sleeve
- right sides
- reinforcing pull
- sides body
- 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
A steel draw bar is formed by assembling a left connector, a right connector, a left rod body, a right rod body, a connecting sleeve, a left adjusting sleeve and a right adjusting sleeve. A threaded hole at one end of the left adjusting sleeve is in threaded connection with the left rod body, a threaded hole at one end of the right adjusting sleeve is in threaded connection with the right rod body, and the ends of the threaded holes of the left adjusting sleeve and the right adjusting sleeve are both provided with tapers alpha towards the inner side. The steel draw bar with high fatigue performance is applied to a high-speed railway bridge, the strength and toughness of the steel draw bar are matched well, and low-temperature impact toughness of the steel draw bar can reach 47J under the condition of -40 DEG C. In addition, the steel draw bar is convenient to install, use and maintain.
Description
Technical field
The utility model belongs to machinery manufacturing technology field, particularly a kind of reinforcing pull rod.
Background technology
Existing railway arch bridge adopts the shaped steel welding or with half parallel strands drag-line suspension rod.Adopt the welded arch bridge suspender of shaped steel, all shaped steel are according to the size blanking, and according to code requirement welding, construction, the site operation workload of arch bridge is bigger, and steel using amount is more, and because work high above the ground, welding quality guarantees difficulty.Adopt half parallel strands drag-line, the PE sheath is exposed to the weather for a long time, be prone to wear out, and anti-fatigue performance is poor.
The utility model content
In order to solve the problem that has reinforcing pull rod anti-fatigue performance difference in the above-mentioned prior art, the purpose of the utility model is to provide a kind of reinforcing pull rod.
In order to achieve the above object, the utility model adopts following technical scheme:
A kind of reinforcing pull rod; Assemble by left and right joint, the left and right sides body of rod, adapter sleeve and left and right adjusting sleeve; The screwed hole of said left regulating sleeve one end and the said left body of rod are through being threaded; The screwed hole of said right regulating sleeve one end and the said right body of rod are through being threaded, and the end of the screwed hole of said left and right adjusting sleeve is equipped with tapering α to the inside.
Preferably, said tapering α is 3 °～8 °.
Preferably, to be provided with the ratio of screwed hole length of length and the left and right adjusting sleeve of tapering part be 1:5～1:3 to said left and right adjusting sleeve ends.
Preferably, the body of rod external screw thread that is connected with said left and right adjusting sleeve in the said left and right sides is trapezoidal round thread.
Preferably, the axial length L of the transition portion of the round bar of the male thread portion of the said left and right sides body of rod and said left and right sides body of rod part is more than or equal to 2 times of said left and right sides body of rod round bar section diameter D.
The beneficial effect of the utility model: adopt the high fatigue property reinforcing pull rod to be applied on the high-speed railway bridge; The intensity of reinforcing pull rod and toughness coupling are better; And its low-temperature impact toughness can reach 47J under-40 ℃ situation, and the mounting, commissioning and maintenance of reinforcing pull rod is convenient.
Description of drawings
The structural representation of Fig. 1 the utility model;
Fig. 2 is the structural representation of regulating sleeve in the utility model;
Fig. 3 is the structural representation of the body of rod;
Among the figure: 1 left joint, 2 left regulating sleeves, the 3 left bodies of rod, 4 adapter sleeves, the 5 right bodies of rod, 6 right regulating sleeves, 7 right connectors.
The specific embodiment
Describe below in conjunction with the preferred embodiment of accompanying drawing, should be appreciated that preferred embodiment described herein only is used for explanation and explains the utility model, and be not used in qualification the utility model the utility model.
As shown in Figure 1, a kind of reinforcing pull rod is assembled by left and right joint, the left and right sides body of rod, adapter sleeve and left and right adjusting sleeve; Left side joint 1 and left regulating sleeve 2 one ends riveted joint, the screwed hole of left regulating sleeve 2 other ends and the left body of rod 3 one ends be through being threaded, and the screwed hole of right regulating sleeve 6 one ends and the right body of rod 5 one ends are through being threaded; And the end of the screwed hole of left and right adjusting sleeve is equipped with tapering α to the inside, the other end of right regulating sleeve 6 and right connector 7 riveted joints, and the left and right sides body of rod is connected with adapter sleeve 4 through screw thread respectively; Wherein, just the joint of pull bar is u shaped connector or O type joint, preferably; Reinforcing pull rod adopts u shaped connector, uses installation more convenient, and just pull bar can be selected the high-quality steel for use in addition; Like 35CrMoA, can guarantee raw-material inherent quality.
As shown in Figure 2; The tapering α of the end of the screwed hole of left and right adjusting sleeve is 3 °～8 ° in the utility model, and more preferably, tapering α is 5 °; Position at this tapering is provided with screw thread equally; This position screw thread can reduce stress when stressed concentrates, and with other screw thread stress basically identicals, improves the whole anti-fatigue performance of screw thread.
The length that the left and right adjusting sleeve ends is provided with tapering part in the utility model is 1:5～1:3 with the ratio of the screwed hole length of left and right adjusting sleeve, and more preferably, the length that is provided with the tapering part is 3 length of buckleing of screw thread, so that it is concentrated to reduce stress.
The external screw thread that the left and right sides body of rod is connected with the left and right adjusting sleeve in the utility model is trapezoidal round thread, can relieve stresses concentrate.
As shown in Figure 3, the axial length L of the transition portion of the round bar of the male thread portion of the left and right sides body of rod and left and right sides body of rod part reduces stress and concentrates more than or equal to 2 times of left and right sides body of rod round bar section diameter D in the utility model.
Reinforcing pull rod in the utility model adopts the high-quality steel, can guarantee raw-material inherent quality.
The utility model is applied on the high-speed railway bridge through adopting the high fatigue property reinforcing pull rod, the intensity of reinforcing pull rod and toughness coupling better, and its low-temperature impact toughness can reach 47J under-40 ℃ situation, and the mounting, commissioning and maintenance of reinforcing pull rod makes things convenient for.
What should explain at last is: the above is merely the embodiment of explanation the utility model; Be not limited to the utility model; For a person skilled in the art; All within the spirit and principle of the utility model, any modification of being done, be equal to replacement, improvement etc., all should be included within the protection domain of the utility model.
Claims (7)
1. reinforcing pull rod; Assemble by left and right joint, the left and right sides body of rod, adapter sleeve and left and right adjusting sleeve; It is characterized in that: the screwed hole of said left regulating sleeve one end and the said left body of rod are through being threaded; The screwed hole of said right regulating sleeve one end and the said right body of rod are through being threaded, and the end of the screwed hole of said left and right adjusting sleeve is equipped with tapering α to the inside.
2. reinforcing pull rod according to claim 1 is characterized in that: said tapering α is 3 °～8 °.
3. reinforcing pull rod according to claim 1 and 2 is characterized in that: the ratio of screwed hole length that said left and right adjusting sleeve ends is provided with length and the left and right adjusting sleeve of tapering part is 1:5～1:3.
4. reinforcing pull rod according to claim 1 and 2 is characterized in that: the external screw thread that the said left and right sides body of rod is connected with said left and right adjusting sleeve is trapezoidal round thread.
5. reinforcing pull rod according to claim 3 is characterized in that: the external screw thread that the said left and right sides body of rod is connected with said left and right adjusting sleeve is trapezoidal round thread.
6. reinforcing pull rod according to claim 1 and 2 is characterized in that: the axial length L of the transition portion of the round bar part of the male thread portion of the said left and right sides body of rod and the said left and right sides body of rod is more than or equal to 2 times of said left and right sides body of rod round bar section diameter D.
7. reinforcing pull rod according to claim 4 is characterized in that: the axial length L of the transition portion of the round bar part of the male thread portion of the said left and right sides body of rod and the said left and right sides body of rod is more than or equal to 2 times of said left and right sides body of rod round bar section diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202785003U CN202265770U (en) | 2011-08-02 | 2011-08-02 | Steel draw bar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202785003U CN202265770U (en) | 2011-08-02 | 2011-08-02 | Steel draw bar |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202265770U true CN202265770U (en) | 2012-06-06 |
Family
ID=46156569
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202785003U Expired - Lifetime CN202265770U (en) | 2011-08-02 | 2011-08-02 | Steel draw bar |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202265770U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102337724A (en) * | 2011-08-02 | 2012-02-01 | 巨力索具股份有限公司 | Steel pull rod |
-
2011
- 2011-08-02 CN CN2011202785003U patent/CN202265770U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102337724A (en) * | 2011-08-02 | 2012-02-01 | 巨力索具股份有限公司 | Steel pull rod |
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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: 20120606 |