CN202228494U - Mandrel connecting structure - Google Patents
Mandrel connecting structure Download PDFInfo
- Publication number
- CN202228494U CN202228494U CN2011203369772U CN201120336977U CN202228494U CN 202228494 U CN202228494 U CN 202228494U CN 2011203369772 U CN2011203369772 U CN 2011203369772U CN 201120336977 U CN201120336977 U CN 201120336977U CN 202228494 U CN202228494 U CN 202228494U
- Authority
- CN
- China
- Prior art keywords
- joint
- core bar
- mandrel
- blank
- coaxial
- 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 mandrel connecting structure comprising a plurality of sections of mandrel blanks, joints, pulling rods and nuts, wherein one joint is coaxially and fixedly connected between two adjacent sections of mandrel blanks; the pulling rod is coaxially and fixedly connected at the two ends of each of the mandrel blanks; and the nuts are coaxially meshed and installed on the pulling rods. The mandrel connecting structure is characterized in that internal screw threads are arranged at the two ends of the mandrel blanks; external screw threads are arranged at the two ends of the joints; the mandrel blanks and the joints are coaxial and are in mesh connection by using the internal screw threads and the external screw threads; and connecting parts of the mandrel blanks and the joints are fixedly arranged in a way of welding. The corresponding screw threads are arranged at the connecting parts of the corresponding members, so that connecting pieces are in opposite mesh connection firstly and are then welded, therefore, the stability of mandrel connection is greatly improved, the stretch resistance performance of mandrels is enhanced, the problems of tearing and breaking of the mandrels in processing are effectively avoided, the production cost is lowered, the materials are saved, and the working efficiency is improved.
Description
Technical field
The utility model belongs to the steel pipe field, relates to core bar, especially a kind of core bar linkage structure.
Background technique
The steel pipe core bar belongs to long axis workpiece, for reaching required processing dimension requirement, needs to adopt multistage blank coaxial welding to process, and core bar is to be carried out being coaxial docking after the smooth processing in the blank joint now, and directly welding is accomplished.In use, weld usually occurs connecting unstable, even the problem of fracture, causes the loss of material, and cost of production is higher, and influences working efficiency.
Summary of the invention
The purpose of the utility model is to overcome the deficiency of existing technology, and the core bar linkage structure that a kind of design science is reasonable, simple in structure, cost is lower, connection is stable is provided.
The utility model solves its technical problem and takes following technological scheme to realize:
A kind of core bar linkage structure; Comprise multistage core bar blank, joint, pull bar and nut; A coaxial affixed joint between the adjacent two sections core bar blank, the coaxial pull bar that all is connected with in the two ends of said blank set, coaxial engagement is equipped with nut on pull bar; It is characterized in that: said core bar blank two ends all are shaped on internal thread; Said joint two ends all are shaped on outside thread, and this core bar blank is connected with a joggle with the coaxial employing internal and external screw thread of this joint, and the joint of core bar blank and joint adopts welding manner to install.
And said pull bar is shaped on outside thread in the joint with the core bar blank, and this pull bar is connected with a joggle with the internal thread of core bar blank is coaxial, and the joint of pull bar and core bar blank adopts welding manner to install.
The advantage and the good effect of the utility model are:
The utility model is shaped on corresponding screw thread in the joint of respective members; Weld again after link is connected with a joggle earlier relatively, significantly promoted the core bar connection stability, promoted the stretch-proof performance of core bar; The problem of effectively avoiding the core bar work in-process to tear, rupture; Save production cost, economical with materials, and promote working efficiency.
Description of drawings
Fig. 1 is the utility model structural front view.
Embodiment
Below in conjunction with accompanying drawing and through specific embodiment the utility model is done further to detail, following examples are descriptive, are not determinate, can not limit the protection domain of the utility model with this.
A kind of core bar linkage structure; Comprise multistage core bar blank 3, joint 4, pull bar 2 and nut 1; Coaxial affixed joint between the two neighboring sections core bar blank, the connection of core bar blank reach requirement length and form blank set, all coaxial affixed pull bar in the two ends of said blank set; Coaxial geared screw on pull bar is convenient to cold-drawn processing.
The innovative point of the utility model is:
The two ends of said core bar blank all are shaped on internal thread; Said joint two ends all are shaped on outside thread; This core bar blank is connected with a joggle with the coaxial employing internal and external screw thread of this joint; After being connected with a joggle, the joint of core bar blank and joint adopts welding manner to install, and promptly in the joint of core bar blank and joint solder joint 5 is arranged.
Said pull bar is shaped on outside thread in the joint with the core bar blank, and this pull bar is connected with a joggle with the internal thread of core bar blank is coaxial, and after being connected with a joggle, the joint of pull bar and core bar blank adopts welding manner to install again.
This structure can effectively promote the stability of core bar linkage structure, avoids the joint problem of fracture easily.
Claims (2)
1. core bar linkage structure; Comprise multistage core bar blank, joint, pull bar and nut; A coaxial affixed joint between the adjacent two sections core bar blank, the coaxial pull bar that all is connected with in the two ends of said blank set, coaxial engagement is equipped with nut on pull bar; It is characterized in that: said core bar blank two ends all are shaped on internal thread; Said joint two ends all are shaped on outside thread, and this core bar blank is connected with a joggle with the coaxial employing internal and external screw thread of this joint, and the joint of core bar blank and joint adopts welding manner to install.
2. core bar linkage structure according to claim 1; It is characterized in that: said pull bar is shaped on outside thread in the joint with the core bar blank; This pull bar is connected with a joggle with the internal thread of core bar blank is coaxial, and the joint of pull bar and core bar blank adopts welding manner to install.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203369772U CN202228494U (en) | 2011-09-09 | 2011-09-09 | Mandrel connecting structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203369772U CN202228494U (en) | 2011-09-09 | 2011-09-09 | Mandrel connecting structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202228494U true CN202228494U (en) | 2012-05-23 |
Family
ID=46079081
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203369772U Expired - Fee Related CN202228494U (en) | 2011-09-09 | 2011-09-09 | Mandrel connecting structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202228494U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107202055A (en) * | 2016-03-16 | 2017-09-26 | 金台渊 | Possesses the pipe connecting structure for reinforcing rod |
-
2011
- 2011-09-09 CN CN2011203369772U patent/CN202228494U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107202055A (en) * | 2016-03-16 | 2017-09-26 | 金台渊 | Possesses the pipe connecting structure for reinforcing rod |
| CN107202055B (en) * | 2016-03-16 | 2019-04-05 | 金台渊 | Has the pipe connecting structure for reinforcing stick |
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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: 20120523 Termination date: 20140909 |
|
| EXPY | Termination of patent right or utility model |