CN202571048U - 一种改进型拉胀头 - Google Patents

一种改进型拉胀头 Download PDF

Info

Publication number
CN202571048U
CN202571048U CN 201220144342 CN201220144342U CN202571048U CN 202571048 U CN202571048 U CN 202571048U CN 201220144342 CN201220144342 CN 201220144342 CN 201220144342 U CN201220144342 U CN 201220144342U CN 202571048 U CN202571048 U CN 202571048U
Authority
CN
China
Prior art keywords
pulled
pipe
pulled expansion
expands
expansion head
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
Application number
CN 201220144342
Other languages
English (en)
Inventor
沈建东
沙志军
王海涛
宋曦
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.)
Elite Marine Equipment & Engineering Inc
Original Assignee
Elite Marine Equipment & Engineering Inc
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 Elite Marine Equipment & Engineering Inc filed Critical Elite Marine Equipment & Engineering Inc
Priority to CN 201220144342 priority Critical patent/CN202571048U/zh
Application granted granted Critical
Publication of CN202571048U publication Critical patent/CN202571048U/zh
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Images

Landscapes

  • Pens And Brushes (AREA)

Abstract

本实用新型公开了一种改进型拉胀头,包括拉胀头本体,所述拉胀头本体表面设有一圈线性突起,在拉胀一侧的所述线性突起与拉胀反方向呈5-10度角。本实用新型将原有拉胀头上拉胀一侧的突起改成小角度的平滑坡面,这样在拉胀时拉胀头与管子内壁由原先的线接触变成面接触,保证了拉胀时管子扩管的平稳过渡,应力均匀,减少了对管子的损伤,延长了管子的使用寿命。

Description

一种改进型拉胀头
技术领域
    本实用新型属于设计一种拉胀头装置,具体涉及一种改进后的小角度突起拉胀头。
背景技术
现有技术中的拉胀头上在拉胀一侧与拉胀另一侧的突起为对称分布,且这种突起坡度大,这样在拉胀时拉胀头与管子内壁就形成线性接触,这样管子扩管时形成硬扩管,会在管子内壁产生划痕和应力不均的现象,对管子的寿命造成很大的影响。
实用新型内容
实用新型目的:本实用新型的目的是为了解决现有技术的不足,提供一种增强管子寿命的改进型拉胀头。
技术方案:本实用新型所述的一种改进型拉胀头,包括拉胀头本体,所述拉胀头本体表面设有一圈线性突起,在拉胀一侧的所述线性突起与拉胀反方向呈5-10度角。
有益效果:本实用新型将原有拉胀头上拉胀一侧的突起改成小角度的平滑坡面,这样在拉胀时拉胀头与管子内壁由原先的线接触变成面接触,保证了拉胀时管子扩管的平稳过渡,应力均匀,减少了对管子的损伤,延长了管子的使用寿命。
附图说明
图1为本实用新型的结构示意图。
图2为本实用新型改进前的结构示意图。
具体实施方式
下面结合附图对本实用新型作进一步说明:
如图1所示,一种拉胀头装置,包括拉胀头本体1,拉胀头本体1表面设有一圈线性突起,在拉胀一侧的线性突起与拉胀反方向呈5度角,在拉胀另一侧的线性突起与拉胀方向呈20度夹角。
如图2所示的改进前的拉胀头表面拉胀一侧与拉胀另一侧的突起为对称分布且角度为20度。
本实用新型将图2所示的拉胀头表面拉胀一侧的突起改成小角度的平滑坡面,这样在拉胀时拉胀头与管子内壁由原先的线接触变成面接触,保证了拉胀时管子扩管的平稳过渡,应力均匀,减少了对管子的损伤,延长了管子的使用寿命。

Claims (1)

1.一种改进型拉胀头,包括拉胀头本体(1),其特征在于:所述拉胀头本体(1)的表面设有一圈线性突起,在拉胀一侧的所述线性突起与拉胀反方向呈5-10度。
CN 201220144342 2012-04-09 2012-04-09 一种改进型拉胀头 Expired - Fee Related CN202571048U (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201220144342 CN202571048U (zh) 2012-04-09 2012-04-09 一种改进型拉胀头

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201220144342 CN202571048U (zh) 2012-04-09 2012-04-09 一种改进型拉胀头

Publications (1)

Publication Number Publication Date
CN202571048U true CN202571048U (zh) 2012-12-05

Family

ID=47240500

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 201220144342 Expired - Fee Related CN202571048U (zh) 2012-04-09 2012-04-09 一种改进型拉胀头

Country Status (1)

Country Link
CN (1) CN202571048U (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103357768A (zh) * 2012-04-09 2013-10-23 南通海利源船舶设备工程有限公司 一种改进型拉胀头

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103357768A (zh) * 2012-04-09 2013-10-23 南通海利源船舶设备工程有限公司 一种改进型拉胀头

Similar Documents

Publication Publication Date Title
CN202571048U (zh) 一种改进型拉胀头
CN202910202U (zh) 一种管材扩径装置
CN204610566U (zh) 一种磁流体密封装置
CN203080804U (zh) 用于面筋保护层的支撑马凳
CN203283960U (zh) 一种纸管
CN201875034U (zh) 制砖机用的隔震器
CN203283957U (zh) 一种耐磨型纸管
CN202777685U (zh) 羽毛球羽毛安装固定片
CN204912643U (zh) 一种强束模
CN103357768A (zh) 一种改进型拉胀头
CN204178844U (zh) 生产特高压避雷管的模具
CN204052672U (zh) 一种带腰形孔的定位板
CN204306351U (zh) 多功能课桌
CN203336099U (zh) 一种强度高、不易变形的法兰
CN204004014U (zh) 一种玻璃压延辊轴承安装结构
CN202571121U (zh) 一种滚道圈芯辊
CN204029510U (zh) 静铁芯
CN204177670U (zh) 弯曲试验压头
CN203674912U (zh) 一种电机压片
CN204912490U (zh) 一种束杆模
CN202597942U (zh) 一种防止断裂的双壁波纹管管材
CN204255431U (zh) 一种膜式燃气表的曲柄
CN204480834U (zh) 一种线圈架
CN204914310U (zh) 一种高性能石油树脂用造粒机脱膜滚筒
CN201609212U (zh) 一种三角形红酒架

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: 20121205

Termination date: 20160409

CF01 Termination of patent right due to non-payment of annual fee