CN203125061U - Tensioning sleeve - Google Patents
Tensioning sleeve Download PDFInfo
- Publication number
- CN203125061U CN203125061U CN 201220642211 CN201220642211U CN203125061U CN 203125061 U CN203125061 U CN 203125061U CN 201220642211 CN201220642211 CN 201220642211 CN 201220642211 U CN201220642211 U CN 201220642211U CN 203125061 U CN203125061 U CN 203125061U
- Authority
- CN
- China
- Prior art keywords
- mandrel
- circular ring
- eccentric circular
- fan
- tapered sleeve
- 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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- Butt Welding And Welding Of Specific Article (AREA)
Abstract
The utility model provides a tensioning sleeve which can guarantee coaxiality of welding of a round pipe. The tensioning sleeve comprises more than two fan-shaped rings, wherein all the fan-shaped rings are distributed on the same circle, the lengths of all the fan-shaped rings are equal in the axial direction, the inner walls of two ends of each fan-shaped ring are cone-shaped, the conical degree of the cones of the two ends of each fan-shaped ring are equal, and directions of the cones of the two ends of each fan-shaped ring are opposite; a core shaft is located on the axes of the fan-shaped rings, and two cone sleeves corresponding to the cones are arranged at two ends of the core shaft respectively; at least one cone sleeve capable of moving in the axial direction of the core shaft is arranged on the core shaft; and when the distance between the two cone sleeves is reduced, the cone sleeve pushes all the fan-shaped rings to move outward in the axial direction. Due to the face that all the fan-shaped rings are located on the same circle and are coaxial with the core shaft, the fact that the round pipe and the core shaft are coaxial is guaranteed, and the coaxiality of welding of the round pipe is improved.
Description
Technical field
Present technique relates to a kind of tensioner cover.
Background technology
During at present to pipe and the welding of other parts, when especially two pipes and same part weld, in order to guarantee the axiality of pipe, be difficult to accomplish.
Summary of the invention
The purpose of present technique provides a kind of tensioner cover that can guarantee the axiality of pipe welding.
This a kind of tensioner cover comprises plural eccentric circular ring, and each eccentric circular ring is distributed on the same circumference, and each eccentric circular ring is in the equal in length of axial direction; The two ends inwall of eccentric circular ring is taper, but the taper tapering at two ends is identical, direction is opposite; One mandrel is positioned on the axis of eccentric circular ring, is provided with two and the corresponding tapered sleeve of described taper at the two ends of mandrel; At least one tapered sleeve can arrange on the mandrel along mandrel with moving axially; When the distance between two tapered sleeves reduced, it is radially outwards mobile that tapered sleeve promotes each eccentric circular ring.
Above-mentioned tensioner cover, mandrel one end is provided with the nut that becomes to be threaded with mandrel, this nut with can contact along the axially movable tapered sleeve of mandrel.
Above-mentioned tensioner cover, nut and can between the axially movable tapered sleeve of mandrel, thrust bearing be set.
Above-mentioned tensioner cover, it also comprises for the elastic ring that each eccentric circular ring is fixed on the periphery that is positioned at each eccentric circular ring on the mandrel.
The beneficial effect of present technique: before pipe and the welding of other part tensioner is placed in the pipe, by reducing two distances between the tapered sleeve, it is radially outwards mobile that tapered sleeve promotes each eccentric circular ring, contacts with round tube inner wall up to scallop then.Because each eccentric circular ring is positioned on the same circumference, and is coaxial with mandrel, also is coaxial so guaranteed pipe and mandrel, guaranteed the positional precision of pipe, improved the axiality of its welding.
Description of drawings
Fig. 1 is the front view of tensioner cover.
The specific embodiment
Referring to tensioner cover shown in Figure 1, comprise that left tensioner cover 1 and right tensioner overlap 2 two, they are all on a mandrel 3.It is identical that left side tensioner cover 1 and right tensioner are overlapped 2 structures.Be that example describes with left tensioner cover 1 only now, left tensioner cover comprises that three identical eccentric circular ring 4, three eccentric circular rings of size are distributed on the same circumference, and each eccentric circular ring is in the equal in length of axial direction; The two ends inwall of eccentric circular ring is taper 5, but the taper tapering at two ends is identical, direction is opposite.Mandrel 3 is positioned on the axis of eccentric circular ring, is provided with two and the corresponding tapered sleeve of described taper at the two ends of mandrel.A tapered sleeve 6 is located with the shoulder 7 of mandrel, and another tapered sleeve 8 can arrange on the mandrel along mandrel with moving axially; When the distance between two tapered sleeves reduced, it is radially outwards mobile that tapered sleeve promotes each eccentric circular ring.
Mandrel one end is provided with the nut 13 that becomes to be threaded with mandrel, but between this nut and the tapered sleeve 8 thrust bearing 9 is set.The elastic ring 10 that is positioned at the peripheral part groove of each eccentric circular ring is used for three eccentric circular rings are fixed on mandrel.
The welding pipe 11,12 o'clock, this left tensioner cover 1 and right tensioner cover 2 place pipe 11,12 inside respectively, by turn nut 13, make tapered sleeve 8 moving axially along mandrel, two tapered sleeves promote eccentric circular ring and radially outwards move synchronously, up to contacting with the inwall of pipe.Because two equal mandrels of pipe are coaxial, the pipe 11 after pipe 11,12 welds with part 14,12 axiality have been guaranteed.Present technique is particularly useful for the welding of the pipe of long size, has guaranteed the axiality after the welding.
Claims (4)
1. a tensioner cover comprises plural eccentric circular ring, and each eccentric circular ring is distributed on the same circumference, and each eccentric circular ring is in the equal in length of axial direction; The two ends inwall of eccentric circular ring is taper, but the taper tapering at two ends is identical, direction is opposite; One mandrel is positioned on the axis of eccentric circular ring, is provided with two and the corresponding tapered sleeve of described taper at the two ends of mandrel; At least one tapered sleeve can arrange on the mandrel along mandrel with moving axially; When the distance between two tapered sleeves reduced, it is radially outwards mobile that tapered sleeve promotes each eccentric circular ring.
2. tensioner cover as claimed in claim 1, it is characterized in that: mandrel one end is provided with the nut that becomes to be threaded with mandrel, this nut with can contact along the axially movable tapered sleeve of mandrel.
3. tensioner cover as claimed in claim 2 is characterized in that: nut and can between the axially movable tapered sleeve of mandrel thrust bearing be set.
4. tensioner cover as claimed in claim 1 it is characterized in that: further comprising for the elastic ring that each eccentric circular ring is fixed on the periphery that is positioned at each eccentric circular ring on the mandrel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220642211 CN203125061U (en) | 2012-11-29 | 2012-11-29 | Tensioning sleeve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220642211 CN203125061U (en) | 2012-11-29 | 2012-11-29 | Tensioning sleeve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203125061U true CN203125061U (en) | 2013-08-14 |
Family
ID=48933082
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220642211 Expired - Fee Related CN203125061U (en) | 2012-11-29 | 2012-11-29 | Tensioning sleeve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203125061U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103846608A (en) * | 2012-11-29 | 2014-06-11 | 溧阳市正翔精密机械有限公司 | Tensioning sleeve |
| CN104741760A (en) * | 2013-12-31 | 2015-07-01 | 深圳市鹏煜威科技有限公司 | Resistance welding device |
| CN105364404A (en) * | 2015-10-27 | 2016-03-02 | 深圳市鹏煜威科技有限公司 | Cylinder tensioning and rotating device |
| CN110757088A (en) * | 2019-11-28 | 2020-02-07 | 中国航发沈阳黎明航空发动机有限责任公司 | Expansion device for welding multi-channel circumferential weld of cylinder |
-
2012
- 2012-11-29 CN CN 201220642211 patent/CN203125061U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103846608A (en) * | 2012-11-29 | 2014-06-11 | 溧阳市正翔精密机械有限公司 | Tensioning sleeve |
| CN104741760A (en) * | 2013-12-31 | 2015-07-01 | 深圳市鹏煜威科技有限公司 | Resistance welding device |
| CN105364404A (en) * | 2015-10-27 | 2016-03-02 | 深圳市鹏煜威科技有限公司 | Cylinder tensioning and rotating device |
| CN110757088A (en) * | 2019-11-28 | 2020-02-07 | 中国航发沈阳黎明航空发动机有限责任公司 | Expansion device for welding multi-channel circumferential weld of cylinder |
| CN110757088B (en) * | 2019-11-28 | 2021-10-22 | 中国航发沈阳黎明航空发动机有限责任公司 | Expansion device for welding multi-channel circumferential weld of cylinder |
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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: 20130814 Termination date: 20161129 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |