CN103357770B - Expansion joint component - Google Patents
Expansion joint component Download PDFInfo
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- CN103357770B CN103357770B CN201310300851.3A CN201310300851A CN103357770B CN 103357770 B CN103357770 B CN 103357770B CN 201310300851 A CN201310300851 A CN 201310300851A CN 103357770 B CN103357770 B CN 103357770B
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- swollen
- swollen head
- expansion set
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- expansion
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Abstract
The invention relates to an expansion joint component. The expansion joint component comprises an expansion joint fixing shaft and an expansion ball, wherein the expansion ball is mounted on the expansion joint fixing shaft through a locking structure consisting of both an expansion sleeve and an expansion joint pin, the expansion sleeve is hollow, and an inserting end running through a cut groove in the peripheral wall of the expansion sleeve is formed in the axial direction of the expansion sleeve; the expansion joint fixing shaft is provided with an axial center hole, first buckle structures are arranged on the inner peripheral wall of the center hole and the outer walls of elastic pieces, the inserting end is inserted into the center hole, and then the expansion sleeve is mounted on the expansion joint fixing shaft through the first buckle structures; the expansion joint pin is provided with an expansion joint pin cap and an expansion joint pin main body, second buckle structures are arranged on the peripheral wall, close to the end part, of the expansion joint pin main body, and the inner peripheral walls, close to the end parts, of the elastic pieces, the expansion joint pin main body penetrates an expansion ball through hole, and then the expansion ball is mounted on the expansion joint fixing shaft through the second buckle structures. By utilizing the characteristics that the inserting end of the expansion sleeve is deformable in the radial direction and the expansion ball can be conveniently mounted on the expansion joint fixing shaft through the buckle structures, the invention provides a connecting structure for an expansion ball and an expansion rod, which is simple and is different from the present one.
Description
(1) technical field
The present invention relates to a kind of swollen head group part.
(2) background technology
Expand tube process be by the effect of external force by expand tube tool toward copper pipe Inner extrusion to expand the process of diameter of steel tube, and expand tube tool is generally by expander roll and to be arranged on expander roll and the swollen ball that diameter is greater than pipe diameter forms, the connected mode of expander roll and swollen ball has two kinds at present, one is welding, but welding is unfavorable for the replacing of swollen ball, because need when the pipe of swollen different-diameter model specification to change the swollen ball of different model, or in use swollen ball is easily damaged and need to change.Another kind is as described in ZL2010102210735, adopt helicitic texture to carry out connecting thus realize swollen ball and change, describe swollen head in literary composition to comprise swollen point and be sleeved on the swollen head circle (i.e. swollen ball) on swollen point, swollen point adopts with front rod and is threaded.
But helicitic texture connected mode also Shortcomings, because the axial force produced in expand tube process is born by helicitic texture, especially less for expander roll diameter dimension, its helicitic texture is easily damaged, the central shaft of swollen ball and expander roll can be caused to misalign or helicitic texture lost efficacy and stripped thread, affect the effect of expand tube or damage expand tube tool.
(3) summary of the invention
The object of the present invention is to provide a kind of swollen head group part, make the connected mode of swollen ball and expander roll be different from above-mentioned two kinds of structures, and structure is simple and easy to install.
For achieving the above object, the present invention is by the following technical solutions:
A kind of swollen head group part, comprises swollen head fixed axis and swollen ball, and swollen ball is provided with swollen ball through hole in the middle part of it, and it is characterized in that: swollen ball is arranged on swollen head fixed axis by closing component structure, described closing component structure comprises expansion set and swollen head pin; Described expansion set is hollow circle tube structure and has insertion end, and insertion end axially offers the profile groove of its perisporium through along it, and what insertion end was divided into some circumferential array by profile groove can the flexure strip of radial deformation; Described swollen head fixed axis one end is provided with axial centre bore, described centre bore internal perisporium and flexure strip outer wall are provided with the first corresponding buckle structure, and described insertion end to be inserted in described centre bore and is arranged on swollen head fixed axis by the first buckle structure by expansion set; The swollen head pin body that described swollen head pin has swollen head pin cap and is connected with swollen head pin cap, swollen head pin body leans on the perisporium of end and flexure strip by the internal perisporium of end is provided with the second corresponding buckle structure, swollen ball is installed on swollen head fixed axis through after swollen ball through hole by the second buckle structure by swollen head pin body, and swollen head pin crown supports the front end face of swollen ball.
The present invention utilizes the insertion end of buckle structure and expansion set to possess can be arranged on by swollen ball on swollen head fixed axis easily by radial deformability, there is provided a kind of and be different from the swollen ball and swollen head fixed axis (also can be expander roll) syndeton that exist at present, structure is simple.
The present invention improves by following scheme:
Described first buckle structure comprises the first runner ring and the first stop protrusion ring, described first runner ring circumference is arranged at described flexure strip outer wall by end, first stop protrusion ring circumference is arranged on described centre bore hole wall, first stop protrusion ring can snap in described first runner ring, and the first stop protrusion ring is provided with the first guidance part of inclination by center port.The end of expansion set insertion end is first through the first stop protrusion ring region, insertion end is smooth in this first stop protrusion ring region because flexure strip is radially-inwardly shunk by the squeezing action of the first stop protrusion ring, when behind this region, return back to reset condition by the natural resiliency effect of flexure strip, expansion set is arranged on swollen head fixed axis by the engaging just by the first runner ring and the first stop protrusion ring.Wherein arranging the first guidance part can make the insertion end of expansion set more conveniently by the first stop protrusion ring region.
Described expansion set insertion end outer wall end is provided with the second guidance part of inclination.Arranging the second guidance part also can facilitate expansion set insertion end to enter more easily in the centre bore of swollen head fixed axis.
Described first runner ring the insertion end of expansion set is separated into away from end the first annular protrusion and be positioned at the second annular protrusion of end, fit in outer peripheral face and the described center bore inner wall face of described first annular protrusion.Being fitted by the outer peripheral face of the first annular protrusion and described center bore inner wall face makes expansion set coaxial with swollen head fixed axis.
Described second buckle structure comprises the second runner ring and the second stop protrusion ring, second runner ring circumference is arranged at described swollen head pin body by end, second stop protrusion ring circumference is arranged at described expansion set insertion end inwall by end, and the second stop protrusion ring can snap in described second runner ring.Swollen head pin body enters in expansion set process, swollen head pin body is first relied on radially outward to be strutted to facilitate it to enter by the flexure strip of insertion end, when the second stop protrusion ring sticks into described second runner ring, flexure strip returns back to reset condition by natural resiliency effect, swollen head pin body is just defined in the axial direction, meanwhile, expansion set cause flexure strip radially-inwardly elastic deformation can not occur because the second stop protrusion ring sticks into described second runner ring, so also cannot depart from swollen head fixed axis before swollen head pin body departs from.
Described second stop protrusion ring and the second runner ring are by being provided with the 3rd guidance part of inclination between swollen head pin body end side, and gap is left in the outer peripheral face of the second annular protrusion and described center bore inner wall face, this gap is greater than the second stop protrusion ring and departs from radial distance needed for the second runner ring, when expansion set upwards deviates from mutually with swollen head bearing pin, swollen head pin body makes flexure strip radially outward elastic deformation by described 3rd guidance part thus makes swollen head pin overcome the second buckle structure effect to depart from expansion set.By arranging the 3rd guidance part and gap makes flexure strip generation deformation thus makes swollen head pin body be separated in the axial direction with expansion set, thus be convenient for changing swollen ball.
Between the other end and the described swollen ball of described expansion set relative to insertion end, the instrument be provided with for wedge shape enters the first radial compression guide part forcing swollen head pin and expansion set to deviate from mutually in the axial direction.After the instrument of wedge shape enters the first radial compression guide part, its wedge structure can change into very larger axially extruding force by by very little radial load, thus swollen head pin body and expansion set is separated in the axial direction like a cork.
Described expansion set is provided with overall diameter relative to the other end of insertion end and is greater than described center-hole diameter and the expansion set cap being less than swollen head fixed axis overall diameter, and described first radial compression guide part is arranged between expansion set cap and swollen ball.Expansion set is provided with expansion set cap and facilitates expansion set to extract from centre bore.
The instrument be provided with between described swollen head pin cap with described swollen ball for wedge shape enters the second radial compression guide part forcing swollen head pin and expansion set to deviate from mutually in the axial direction.After the instrument of wedge shape enters the second radial compression guide part, its wedge structure can change into very larger axially extruding force by by very little radial load, thus swollen head pin body and expansion set is separated in the axial direction like a cork.
The front end of described swollen head pin cap is the conical guiding conical surface, and convenience swollen head group part when expand tube enters smoothly in copper pipe and carries out expand tube.
(4) accompanying drawing explanation
Fig. 1 is the schematic diagram of assembled state of the present invention;
Fig. 2 is the schematic diagram of decomposing state of the present invention;
Fig. 3 is a sectional view (in this figure, expansion set does not have expansion set cap) of the present invention;
Fig. 4 is the present invention enters a copper pipe cross-sectional schematic when expand tube;
Fig. 5 be the present invention after expand tube from the cross-sectional schematic that copper pipe exits;
Fig. 6 is that the instrument of wedge shape enters the first radial compression guide part and forces that swollen head pin deviates from the axial direction mutually with expansion set, radially outward elastically-deformable cross-sectional schematic occurs insertion end;
Fig. 7 is that the instrument of wedge shape enters the second radial compression guide part and forces that swollen head pin deviates from the axial direction mutually with expansion set, radially outward elastically-deformable cross-sectional schematic occurs insertion end;
Fig. 8 is the enlarged diagram of A in Fig. 5.
Description of reference numerals:
10-is swollen head fixed axis;
11-centre bore; 11-10 first stop protrusion ring; 11-11 first guidance part; 11-12 the 4th guide part;
20-is swollen ball;
21-is swollen ball through hole; The front end face of 22-is swollen ball;
30-expansion set;
31-insertion end; 31-1 profile groove; 31-2 first runner ring; 31-3 second guidance part; 31-4 first annular protrusion; 31-5 second annular protrusion; 31-6 second stop protrusion ring; 31-6-1 the 3rd guidance part;
32-expansion set cap; 32-1 first radial compression guide part
40-is swollen head pin
41-is swollen head pin cap;
42-is swollen head pin body; 42-1 second runner ring;
The instrument of 50-wedge shape.
(5) detailed description of the invention
One is as depicted in figs. 1 and 2 swollen head group part, comprise swollen head fixed axis 10 and swollen ball 20, swollen ball 20 is arranged on swollen head fixed axis 10 by closing component structure, and described closing component structure comprises expansion set 30 and swollen head pin 40.
Described swollen ball 20 is provided with swollen ball through hole 21 in the middle part of it.
Described expansion set 30 is for hollow circle tube structure and have insertion end 31, and insertion end 31 axially offers the profile groove 31-1 of its perisporium through along it, and what insertion end 31 was divided into some circumferential array by profile groove 31-1 can the flexure strip of radial deformation.
Described swollen head fixed axis 10 one end is provided with axial centre bore 11, and described centre bore 11 internal perisporium and flexure strip outer wall are provided with the first corresponding buckle structure.
The swollen head pin body 42 that described swollen head pin 40 has swollen head pin cap 41 and is connected with swollen head pin cap 41, swollen head pin body 42 leans on the perisporium of end and flexure strip by the internal perisporium of end is provided with the second corresponding buckle structure.
Described insertion end 31 first to be inserted in described centre bore 11 and is arranged on swollen head fixed axis 10 by the first buckle structure by expansion set 30, then swollen ball 20 is installed on swollen head fixed axis 10 through after swollen ball through hole 21 by the second buckle structure by swollen head pin body 42, the front end face 22 of the swollen ball of swollen head pin cap 41 contact.
The present invention utilizes the insertion end of expansion set to possess and can radial deformability and buckle structure can be arranged on swollen head fixed axis by swollen ball easily, be different from the syndeton of swollen ball and the expander roll existed at present, and structure is simple.
Structurally the done further improvement of this swollen head group part is illustrated below in conjunction with accompanying drawing 3 to accompanying drawing 8.
Described first buckle structure comprises the first runner ring 31-2 and the first stop protrusion ring 11-10, described first runner ring 31-2 circumference is arranged at described flexure strip outer wall by end, first stop protrusion ring 11-10 circumference is arranged on described centre bore 11 hole wall, first stop protrusion ring 11-10 can snap in described first runner ring 31-2, first stop protrusion ring 11-10 leans on centre bore 11 mouthfuls while be provided with the first guidance part 11-11 of inclination, certainly, first stop protrusion ring 11-10 can be arranged at expansion set 30 flexure strip outer wall by end, and the first runner ring 31-2 can be arranged at described centre bore 11 hole wall, carry out exchanging and equally also realize same effect.The end of expansion set insertion end is through the first stop protrusion ring 11-10 region, insertion end is radially-inwardly shunk smoothly by this region because flexure strip is subject to the squeezing action of the first stop protrusion ring 11-10, when behind this region, flexure strip returns back to reset condition by natural resiliency effect, and expansion set is arranged on swollen head fixed axis by the engaging just by the first runner ring 31-2 and the first stop protrusion ring 11-10.Wherein arranging the first guidance part 11-11 can make the insertion end 31 of expansion set 30 more conveniently by the first stop protrusion ring 11-10 region.
Described expansion set 30 insertion end 31 outer wall end is provided with the second guidance part 31-3 of inclination.Arranging the second guidance part 31-3 also can facilitate expansion set 30 insertion end 31 to enter more easily in the centre bore of swollen head fixed axis.
Described first runner ring 31-2 the insertion end 31 of expansion set 30 is separated into away from end the first annular protrusion 31-4 and be positioned at the second annular protrusion 31-5 of end, outer peripheral face and described centre bore 11 internal face of described first annular protrusion 31-4 are fitted.Being fitted by the outer peripheral face of the first annular protrusion 31-4 and described centre bore 11 internal face makes expansion set coaxial with swollen head fixed axis.
Described second buckle structure comprises the second runner ring 42-1 and the second stop protrusion ring 31-6, second runner ring 42-1 circumference is arranged at described swollen head pin body 42 by end, second stop protrusion ring 31-6 circumference is arranged at described expansion set 30 insertion end 31 inwall by end, second stop protrusion ring 31-6 can snap in described second runner ring 42-1, certainly, can by head pin body 42 swollen described in the second stop protrusion ring 31-6 by end, and the second runner ring 42-1 can be arranged at described expansion set 30 insertion end 31 inwall by end, namely carry out exchanging equally also realizing same effect.Swollen head pin body 42 enters in expansion set process, swollen head pin body is first relied on radially outward to be strutted to facilitate it to enter by the flexure strip of insertion end, when the second stop protrusion ring 31-6 sticks into described second runner ring, flexure strip returns back to reset condition by natural resiliency effect, swollen head pin body just is axially being defined, meanwhile, expansion set cause flexure strip radially-inwardly elastic deformation can not occur because the second stop protrusion ring 31-6 sticks into described second runner ring, so also cannot depart from swollen head fixed axis before swollen head pin body departs from.
As shown in Figure 8, described second stop protrusion ring 31-6 and the second runner ring 42-1 is by being provided with the 3rd guidance part 31-6-1 of inclination between side, swollen head pin body 42 end, and the outer peripheral face of the second annular protrusion 31-5 and described centre bore 11 internal face leave gap h
1, this gap is greater than the second stop protrusion ring 31-6 and departs from radial distance h needed for the second runner ring 42-1
2, when expansion set 30 axially deviates from mutually with swollen head pin 40, swollen head pin body 42 makes flexure strip radially outward elastic deformation by described 3rd guidance part 31-6-1 thus makes swollen head pin 40 overcome the second buckle structure effect to depart from expansion set 30.By arranging the 3rd guidance part 31-6-1 and gap makes flexure strip generation deformation thus makes swollen head pin body 42 be separated in the axial direction with expansion set 30, thus be convenient for changing swollen ball 20.
The instrument 50 be provided with for wedge shape between the other end and described swollen ball 20 of the relative insertion end 31 of described expansion set 30 enters the first radial compression guide part 32-1 forcing swollen head pin 40 to deviate from mutually in the axial direction with expansion set 30, as shown in Figure 6.After the instrument 50 of wedge shape enters the first radial compression guide part 32-1, its wedge structure can change into very larger axially extruding force by by very little radial load, thus is separated in the axial direction with expansion set 30 by swollen head pin body 42 like a cork.The other end of the relative insertion end 31 of described expansion set 30 is provided with overall diameter and is greater than described centre bore 11 diameter and the expansion set cap 32 that is less than swollen head fixed axis 10 overall diameter, the overall diameter of certain expansion set cap 32 is also less than the largest outer diameter of swollen ball, during to avoid expand tube, expansion set cap 32 contacts with tube wall, and expansion set 30 is provided with expansion set cap 32 and also facilitates expansion set 30 to extract from centre bore 11.The first above-mentioned radial compression guide part 32-1 can be arranged between expansion set cap 32 and swollen ball 20, in fact, separate in the axial direction with expansion set 30 for making swollen head pin body 42, also the instrument 50 the first above-mentioned radial compression guide part 32-1 can being changed into the confession wedge shape arranged between described swollen head pin cap 41 with described swollen ball 20 enters the second radial compression guide part forcing swollen head pin 40 to deviate from mutually in the axial direction with expansion set 30, as shown in Figure 7.After the instrument 50 of wedge shape enters the second radial compression guide part, its wedge structure can change into very larger axially extruding force by by very little radial load, can be separated in the axial direction with expansion set 30 by swollen head pin body 42 like a cork equally.
It is worth mentioning that, in the process of expand tube, although swollen ball 20 can be subject to the effect of steel pipe tube wall and make swollen head pin 40 there is the trend with expansion set 30 axial separation, according to actual service condition, described active force is not enough to swollen head pin 40 is separated in the axial direction with expansion set 30.As shown in Fig. 4 or Fig. 8, at the first stop protrusion ring 11-10 away from centre bore 11 opening part while be provided with the 4th guidance part 11-12 of inclination, 4th guidance part also can be arranged on first stop protrusion ring 11-10 one side faced by when the second annular protrusion is assembled, or both all corresponding settings, to play in use, the effect (also namely play the effect of extruding flexure strip, make flexure strip radially-inwardly firmly grasp swollen head pin) that 4th guidance part plays extruding second annular protrusion 31-5 avoids swollen head pin 40 to be separated in the axial direction with expansion set 30.After being extracted by swollen head pin 40 when taking apart, the 4th guidance part 11-12 plays again convenient effect expansion set 30 being departed from swollen head fixed axis 10.
Because the existence of the 4th guidance part 11-12, if the first buckle structure axle closely cooperates (very close to each other on the first stop protrusion ring 11-10 and i.e. the first runner ring 31-2 axle), swollen head pin 40 can be caused will to extrude the second annular protrusion 31-5 with the 4th guidance part during expansion set 30 axial separation, thus do not realize the axial separation of swollen head pin 40 and expansion set 30, so needs the first stop protrusion ring 11-10 and i.e. the first runner ring 31-2 axle leave gap, make swollen head pin 40 will with expansion set 30 axial separation time, second annular protrusion 31-5 is away from the first stop protrusion ring 11-10, as Fig. 4, shown in Fig. 6 and Fig. 7.
Above-described embodiment is better embodiment of the present invention; but embodiments of the present invention are not limited thereto; other are any do not deviate from Spirit Essence of the present invention and principle under do change, modification, substitute, combine, simplify; be the substitute mode of equivalence, be included within protection scope of the present invention.
Claims (10)
1. a swollen head group part, comprises swollen head fixed axis and swollen ball, and swollen ball is provided with swollen ball through hole in the middle part of it, and it is characterized in that: swollen ball is arranged on swollen head fixed axis by closing component structure, described closing component structure comprises expansion set and swollen head pin;
Described expansion set is hollow circle tube structure and has insertion end, and insertion end axially offers the profile groove of its perisporium through along it, and what insertion end was divided into some circumferential array by profile groove can the flexure strip of radial deformation;
Described swollen head fixed axis one end is provided with axial centre bore, described centre bore internal perisporium and flexure strip outer wall are provided with the first corresponding buckle structure, and described insertion end to be inserted in described centre bore and is arranged on swollen head fixed axis by the first buckle structure by expansion set;
The swollen head pin body that described swollen head pin has swollen head pin cap and is connected with swollen head pin cap, swollen head pin body leans on the perisporium of end and flexure strip by the internal perisporium of end is provided with the second corresponding buckle structure, swollen ball is installed on swollen head fixed axis through after swollen ball through hole by the second buckle structure by swollen head pin body, and swollen head pin crown supports the front end face of swollen ball.
2. the swollen head group part of one according to claim 1, it is characterized in that: described first buckle structure comprises the first runner ring and the first stop protrusion ring, described first runner ring circumference is arranged at described flexure strip outer wall by end, first stop protrusion ring circumference is arranged on described centre bore hole wall, first stop protrusion ring can snap in described first runner ring, and the first stop protrusion ring is provided with the first guidance part of inclination by center port.
3., according to the arbitrary described swollen head group part of one of claim 1 or 2, it is characterized in that: described expansion set insertion end outer wall end is provided with the second guidance part of inclination.
4. the swollen head group part of one according to claim 2, it is characterized in that: described first runner ring the insertion end of expansion set is separated into away from end the first annular protrusion and be positioned at the second annular protrusion of end, fit in outer peripheral face and the described center bore inner wall face of described first annular protrusion.
5. according to the arbitrary described swollen head group part of one of claim 1,2 and 4, it is characterized in that: described second buckle structure comprises the second runner ring and the second stop protrusion ring, second runner ring circumference is arranged at described swollen head pin body by end, second stop protrusion ring circumference is arranged at described expansion set insertion end inwall by end, and the second stop protrusion ring can snap in described second runner ring.
6. the swollen head group part of one according to claim 5, it is characterized in that: described second stop protrusion ring and the second runner ring are by being provided with the 3rd guidance part of inclination between swollen head pin body end side, and gap is left in the outer peripheral face of the second annular protrusion and described center bore inner wall face, this gap is greater than the second stop protrusion ring and departs from radial distance needed for the second runner ring, when expansion set upwards deviates from mutually with swollen head bearing pin, swollen head pin body makes flexure strip radially outward elastic deformation by described 3rd guidance part thus makes swollen head pin overcome the second buckle structure effect to depart from expansion set.
7. the swollen head group part of one according to claim 6, is characterized in that: between the other end and the described swollen ball of described expansion set relative to insertion end, the instrument be provided with for wedge shape enters the first radial compression guide part forcing swollen head pin and expansion set to deviate from mutually in the axial direction.
8. the swollen head group part of one according to claim 7, it is characterized in that: described expansion set is provided with overall diameter relative to the other end of insertion end and is greater than described center-hole diameter and the expansion set cap being less than swollen head fixed axis overall diameter, and described first radial compression guide part is arranged between expansion set cap and swollen ball.
9. the swollen head group part of one according to claim 6, is characterized in that: the instrument be provided with between described swollen head pin cap with described swollen ball for wedge shape enters the second radial compression guide part forcing swollen head pin and expansion set to deviate from mutually in the axial direction.
10. the swollen head group part of one according to claim 9, is characterized in that: the front end of described swollen head pin cap is the conical guiding conical surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310300851.3A CN103357770B (en) | 2013-07-17 | 2013-07-17 | Expansion joint component |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310300851.3A CN103357770B (en) | 2013-07-17 | 2013-07-17 | Expansion joint component |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103357770A CN103357770A (en) | 2013-10-23 |
| CN103357770B true CN103357770B (en) | 2015-04-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310300851.3A Active CN103357770B (en) | 2013-07-17 | 2013-07-17 | Expansion joint component |
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| CN (1) | CN103357770B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104179761B (en) * | 2014-07-22 | 2016-04-20 | 中名(东莞)电子有限公司 | Two metal shaft linkage structures |
| CN104439778B (en) * | 2014-11-13 | 2016-08-31 | 中国南方航空工业(集团)有限公司 | Part opening strut workpiece |
| CN105642770A (en) * | 2016-04-08 | 2016-06-08 | 奥美森智能装备股份有限公司 | Rapid mounting and dismounting structure as well as expansion tube and expansion head assembly comprising same |
| CN110102651A (en) * | 2019-03-20 | 2019-08-09 | 宁波精达成形装备股份有限公司 | A kind of electric tube expander |
| CN110242284A (en) * | 2019-07-15 | 2019-09-17 | 贵州大学 | A kind of casing bit for preventing inspection instrument for borehole probe from destroying |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1393620A (en) * | 1921-07-15 | 1921-10-11 | Gavin Peter | Tube-expander |
| JPS52120268A (en) * | 1976-04-02 | 1977-10-08 | Hitachi Ltd | Construction of pipe hole section formed by cementing adhesive member to inside of hole expanding |
| US4235013A (en) * | 1978-10-30 | 1980-11-25 | Westinghouse Electric Corp. | Tube guide-expander |
| CN2157840Y (en) * | 1992-09-02 | 1994-03-02 | 国营第一三四厂 | Expansion head with spiral line |
| CN203380289U (en) * | 2013-07-17 | 2014-01-08 | 中山市奥美森工业有限公司 | Expanding head component |
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2013
- 2013-07-17 CN CN201310300851.3A patent/CN103357770B/en active Active
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Address after: 528400 Guangdong province Zhongshan City, New Road No. 1 of Patentee after: Aomei gloomy intelligence equipment limited company Address before: 528400 Guangdong province Zhongshan City, New Road No. 01 of Patentee before: Zhongshan Aomeisen Industrial Co., Ltd. |