CN107791204A - A kind of dismantling device of tubular member - Google Patents
A kind of dismantling device of tubular member Download PDFInfo
- Publication number
- CN107791204A CN107791204A CN201610756897.XA CN201610756897A CN107791204A CN 107791204 A CN107791204 A CN 107791204A CN 201610756897 A CN201610756897 A CN 201610756897A CN 107791204 A CN107791204 A CN 107791204A
- Authority
- CN
- China
- Prior art keywords
- sleeve pipe
- push rod
- slips
- cylinder
- dismantling device
- 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.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
- B25B27/14—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for assembling objects other than by press fit or detaching same
- B25B27/143—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for assembling objects other than by press fit or detaching same for installing wire thread inserts or tubular threaded inserts
Abstract
The invention discloses a kind of dismantling device of tubular member, belong to field of hand.The dismantling device includes push rod, sleeve pipe and slips, sleeve pipe coaxial line is sheathed on outside push rod, one end of push rod is in frustum, the lateral wall at the middle part of push rod is provided with external screw thread, the other end of push rod is stretched out outside sleeve pipe, the inwall of sleeve pipe is provided with the internal thread to match with external screw thread, one end of sleeve pipe is provided with multiple through holes, a slips is movably installed with each through hole, the one side of each slips is in contact with the conical surface of one end in frustum of push rod, by the one end stretched out outside sleeve pipe for turning push rod, push rod is set to be moved towards the one end for having through hole on sleeve pipe, slips is promoted by the conical surface of one end on push rod in frustum, slips is held out against on the madial wall of tubular member, allow to clamp sleeve pipe by clamping device and rotated, realize the dismounting of tubular member, avoid the damage to the lateral wall of tubular member.
Description
Technical field
The present invention relates to field of hand, more particularly to a kind of dismantling device of tubular member.
Background technology
Threaded connection is a kind of very common connected mode, the connection being widely used between various tubular members.
The part connected on tubular member would generally be provided with internal thread or external screw thread, pass through internal thread or external screw thread
Can be connected with the external screw thread on another part or internal thread, the connection of two tubular members or when being disconnected, it is necessary to
Tubular member is clamped by pipe wrench or other dismantling devices, two tubular members is relatively rotated.But part is managed
Shape part is due to the structure limitation on outer surface, such as valve is provided with outside some pipelines, thus inconvenience is pressed from both sides using clamping device
Its outer surface is held, the also external surface quality requirements of part tubular part are higher, during being clamped using instrument, due to work
Tool can cause certain damage to the lateral wall of tubular member, may influence the normal use of tubular member, such as recovering the oil
The packer used in engineering, need to be used to seal due to forming the outer surface of part tubular part of packer, therefore externally
Surface quality requirements are higher, if during assembling and disassembling packer, screw thread is carried out using clamping devices such as pipe wrench
Dismounting, then these tubular member outer surfaces may occur damage and cause the poorly sealed feelings that can not even seal
Condition, therefore, existing dismantling device can not meet the requirement of this two classes tubular member.
The content of the invention
In order to solve, when dismounting tubular member, tubular member can not to be clamped or the outside of tubular member may be damaged
The problem of wall, the embodiments of the invention provide a kind of dismantling device of tubular member.The technical scheme is as follows：
The embodiments of the invention provide a kind of dismantling device of tubular member, the dismantling device includes：Push rod, sleeve pipe and
Slips, described sleeve pipe coaxial line are sheathed on outside the push rod, and one end of the push rod is in frustum, the middle part of the push rod it is outer
Side wall is provided with external screw thread, and the other end of the push rod is stretched out outside described sleeve pipe；
The inwall of described sleeve pipe is provided with the internal thread to match with the external screw thread, and one end of described sleeve pipe is provided with multiple lead to
Hole, the multiple through hole are arranged circumferentially along described sleeve pipe, and a slips is movably installed with each through hole,
The one side of each slips is in contact with the conical surface of one end in frustum of the push rod.
Preferably, the one side of the slips and the taper-face contact is concave surface, and the concave surface is fitted on the conical surface.
When realizing, the dismantling device also includes the position limiting structure being arranged in described sleeve pipe, and the position limiting structure is used for
Limit the displacement of radial direction of the slips along the push rod.
Further, the position limiting structure includes shell fragment, and one end of the shell fragment is fixedly connected in described sleeve pipe, described
The other end of shell fragment is pressed on the another side of the slips.
Further, set fluted on the another side of the slips, the shell fragment is pressed in the groove.
Preferably, the end face closing of one end of the setting through hole of described sleeve pipe.
Preferably, described sleeve pipe includes the first cylinder and the second cylinder that are coaxially disposed, and the through hole is arranged on described the
On one cylinder, the internal thread is arranged on second cylinder, and first cylinder and second cylinder are in cylindrical tube,
The external diameter of second cylinder is more than the external diameter of first cylinder.
Alternatively, the other end of the push rod is in hexa-prism, and described sleeve pipe includes the first cylinder being coaxially disposed and the
Two cylinders, the through hole are arranged on first cylinder, and the internal thread is arranged on second cylinder, described second
Body is in six prismatics tubulose.
Preferably, three through holes are provided with described sleeve pipe.
Alternatively, the slips is provided with anti-skid structure on the another side on the inside of described sleeve pipe.
The embodiment of the present invention by push rod coaxial line be arranged sleeve pipe, one end of push rod is in frustum, the outside at middle part
Wall is provided with external screw thread, and the other end of push rod is stretched out outside sleeve pipe, and one end of sleeve pipe corresponds to position of the push rod in one end of frustum
Install and be equipped with through hole, slips is provided with through hole, so as to which one end of sleeve pipe is inserted into tubular member to be dismounted, lead to
Cross the one end stretched out outside sleeve pipe for turning push rod, push rod is moved towards the one end for having through hole on sleeve pipe, by push rod in cone
The conical surface of one end of mesa-shaped promotes slips, slips is held out against on the madial wall of tubular member so that can pass through clamping device
Clamp sleeve pipe to be rotated, realize the dismounting of tubular member, avoid the damage to the lateral wall of tubular member.
Brief description of the drawings
Technical scheme in order to illustrate the embodiments of the present invention more clearly, make required in being described below to embodiment
Accompanying drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the present invention, for
For those of ordinary skill in the art, on the premise of not paying creative work, other can also be obtained according to these accompanying drawings
Accompanying drawing.
Fig. 1 is a kind of structure chart of the dismantling device of tubular member provided in an embodiment of the present invention；
Fig. 2 is a kind of structural representation of push rod provided in an embodiment of the present invention；
Fig. 3 is a kind of structural representation of sleeve pipe provided in an embodiment of the present invention；
Fig. 4 is a kind of structural representation of slips provided in an embodiment of the present invention；
Fig. 5 is a kind of scheme of installation of slips provided in an embodiment of the present invention；
Fig. 6 is the Section A-A figure in Fig. 5；
Fig. 7 is the structural representation of another sleeve pipe provided in an embodiment of the present invention；
Fig. 8 is the structural representation of another push rod provided in an embodiment of the present invention.
Embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with accompanying drawing to embodiment party of the present invention
Formula is described in further detail.
The embodiments of the invention provide a kind of dismantling device of tubular member, the dismantling device is applied to dismounting tubulose zero
Part.Fig. 1 is a kind of structure chart of the dismantling device of tubular member provided in an embodiment of the present invention, as shown in figure 1, the dismantling device
Including：Push rod 10, sleeve pipe 20 and slips 30, the coaxial line of sleeve pipe 20 are sheathed on outside push rod 10, and Fig. 2 is provided in an embodiment of the present invention
A kind of structural representation of push rod, Fig. 3 is a kind of structural representation of sleeve pipe provided in an embodiment of the present invention, with reference to Fig. 1 and figure
2, one end of push rod 10 is in frustum, and the lateral wall at the middle part of push rod 10 is provided with external screw thread 12a, and the other end of push rod 10 stretches out
Outside sleeve pipe 20, the inwall of sleeve pipe 20 is provided with the internal thread 20a to match with external screw thread 12a, and one end of sleeve pipe 20 is provided with multiple lead to
Hole 20b, multiple through hole 20b being arranged circumferentially along sleeve pipe 20, a slips 30 is movably installed with each through hole 20b, often
The one side of individual slips 30 is in contact with the conical surface 11a of one end in frustum of push rod 10.
The embodiment of the present invention by push rod coaxial line be arranged sleeve pipe, one end of push rod is in frustum, the outside at middle part
Wall is provided with external screw thread, and the other end of push rod is stretched out outside sleeve pipe, and one end of sleeve pipe corresponds to position of the push rod in one end of frustum
Install and be equipped with through hole, slips is provided with through hole, so as to which one end of sleeve pipe is inserted into tubular member to be dismounted, lead to
Cross the one end stretched out outside sleeve pipe for turning push rod, push rod is moved towards the one end for having through hole on sleeve pipe, by push rod in cone
The conical surface of one end of mesa-shaped promotes slips, slips is held out against on the madial wall of tubular member so that can pass through clamping device
Clamp sleeve pipe to be rotated, realize the dismounting of tubular member, avoid the damage to the lateral wall of tubular member.
In the present embodiment, push rod 10 includes first paragraph 11, second segment 12 and the 3rd section 13 that coaxial line is sequentially arranged, the
One section 11 one end is in frustum, and its lateral wall is conical surface 11a, is provided with external screw thread 12a on the lateral wall of second segment 12, and the 3rd
At least part of section 13 is exposed to outside sleeve pipe 20；Corresponded in the side wall of the first end of sleeve pipe 20 conical surface 11a position be provided with it is multiple
Through hole 20b, multiple through hole 20b being arranged circumferentially along sleeve pipe 20, second end opposite with first end of sleeve pipe 20 are provided with
The internal thread 20a being mutually adapted with external screw thread 12a；Slips 30 and through hole 20b, which are corresponded, to be set, and slips 30 is movably arranged on pair
In the through hole 20b answered, and the side of slips 30 is in contact with conical surface 11a, and the opposite side of slips 30 is exposed to outside sleeve pipe 20.
Preferably, the end face closing of one end that through hole 20b is set of sleeve pipe 20, it is strong so as to increase the machinery of sleeve pipe 20
Degree, avoids the deformation of sleeve pipe 20.
Fig. 4 is a kind of structural representation of slips provided in an embodiment of the present invention, as shown in figure 4, slips 30 and conical surface 11a
The one side of contact is concave surface 30c, and Fig. 5 is a kind of scheme of installation of slips provided in an embodiment of the present invention, and Fig. 6 is in Fig. 5
Section A-A figure, with reference to shown in Fig. 5 and Fig. 6, concave surface 30c is fitted on conical surface 11a, so as to increase slips 30 and conical surface 11a's
Contact area, it can reduce and be held out against by slips 30 when the inwall of the tubular member dismounted, pressure of the slips 30 to conical surface 11a
By force, avoid conical surface 11a from damaging, extend the service life of dismantling device.
In addition, being provided with anti-skid structure 30a on the another side of slips 30, slips can be increased by anti-skid structure 30a
Frictional force between 30 and the inwall of tubular member to be dismounted, avoid when turning sleeve pipe 20, slips 30 and pipe to be dismounted
Skidded between shape part.
It should be noted that, although the anti-skid structure 30a provided in the embodiment of the present invention is strip, but in other realities
It can also be wavy or other shapes structures to apply anti-skid structure 30a in example, and the present invention is not limited thereto.
Preferably, dismantling device also includes the position limiting structure being arranged on sleeve pipe 20, and position limiting structure is used to limit slips 30
Along the displacement of the radial direction of push rod 10, avoid when not in use, slips 30 is deviate from from through hole 20b.
Specifically, shell fragment 41 is included referring to Fig. 1, position limiting structure, one end of shell fragment 41 is fixedly connected on sleeve pipe 20, shell fragment
41 other end is pressed on the another side of slips 30, can be avoided when not in use by shell fragment 41, and slips 30 is from through hole 20b
Middle abjection, it is simple in construction.
Specifically, position limiting structure also includes pin 42, and shell fragment 41 is fixedly connected on the lateral wall of sleeve pipe 20 by pin 42
On, pin 42 is easy to dismount, and facilitates the replacing of shell fragment 41.
As shown in figure 4, the part that slips 30 contacts with shell fragment 41 sets fluted 30b, shell fragment 41 is pressed in groove 30b,
Slips 30 can be preferably avoided to deviate from from through hole 20b.
Preferably, groove 30b depth is not less than height of the shell fragment 41 on the activity direction of slips 30, so as to logical
When crossing slips 30 and holding out against tubular member, avoid shell fragment 41 from being withstood on the inwall of tubular member and occur deforming or damage, prolong
The service life of shell fragment 41 is grown.
It should be noted that, although each slips 30 shown in Fig. 1 is only correspondingly arranged on a shell fragment 41, actually setting
In meter, each slips 30 can also be correspondingly arranged two or more shell fragments 41.
As shown in figure 3, sleeve pipe 20 includes the first cylinder and the second cylinder being coaxially disposed, through hole 20b is arranged on first
On body, internal thread 20a is arranged on the second cylinder, and the first cylinder and the second cylinder are in cylindrical tube, and the external diameter of the second cylinder is big
In the external diameter of the first cylinder, clamped so as to clamping devices such as convenient use pipe wrench.
Fig. 7 is the structural representation of another sleeve pipe provided in an embodiment of the present invention, and Fig. 8 is provided in an embodiment of the present invention
Another structural representation of push rod, sleeve pipe 20 in push rod 10 and Fig. 1 in sleeve pipe 20 and Fig. 8 and push rod 10 in Fig. 7
Structure is essentially identical, and difference is, in fig. 5 and fig., the 3rd section 13 of push rod 10 is in hexa-prism, and sleeve pipe 20 includes
The first cylinder and the second cylinder being coaxially disposed, through hole 20b are arranged on the first cylinder, and internal thread 20a is arranged on the second cylinder
On, the second cylinder is in six prismatics tubulose, and the outer wall of regular hexagon is advantageous to the use of clamping device.
It is envisioned that the cross section of the second cylinder of the 3rd section 13 and sleeve pipe 20, which may be arranged as other, is beneficial to folder
Hold the shape used of instrument, such as square etc..
In the present embodiment, the angle interval being provided with sleeve pipe 20 between three through holes 20b, two neighboring through hole 20b
For 120 °, three slips 30 are correspondingly installed, so as to so that the madial wall stress of tubular member to be dismounted evenly, avoids
Occurs deformation due to unbalance stress.
In other embodiments, greater number of through hole 20b can also be set to install greater number of slips 30.
The use to this dismantling device carries out simple illustration below：
The 3rd section 13 of push rod 10 is first turned, to adjust the height that slips 30 stretches out the outer surface of sleeve pipe 20, makes sleeve pipe 20
First end can be extend into tubular member to be dismounted, then the first end of sleeve pipe 20 is extend into tubular member to be dismounted
In, clamp the second end lateral wall of sleeve pipe 20 and the 3rd section 13 of lateral wall of push rod 10 respectively by two clamping devices,
Turn the 3rd section 13 of push rod 10 so that push rod 10 stretches into sleeve pipe 20, pushes slips 30 by conical surface 11a, makes slips 30
Hold out against on the madial wall of tubular member to be dismounted, clamp the lateral wall at the second end of sleeve pipe 20 by clamping device afterwards
Turn, to dismount tubular member to be dismounted, finally push rod 10 is unscrewed, slips 30 is unclamped tubular member to be dismounted, with
Dismantling device is removed from tubular member to be dismounted.
The foregoing is only presently preferred embodiments of the present invention, be not intended to limit the invention, it is all the present invention spirit and
Within principle, any modification, equivalent substitution and improvements made etc., it should be included in the scope of the protection.
Claims (10)
1. a kind of dismantling device of tubular member, it is characterised in that the dismantling device includes：Push rod (10), sleeve pipe (20) and
Slips (30), described sleeve pipe (20) coaxial line are sheathed on the push rod (10) outside, and one end of the push rod (10) is in frustum, institute
The lateral wall for stating the middle part of push rod (10) is provided with external screw thread (12a), and the other end of the push rod (10) stretches out described sleeve pipe
(20) outside；
The inwall of described sleeve pipe (20) is provided with the internal thread (20a) to match with the external screw thread (12a), described sleeve pipe (20)
One end is provided with multiple through holes (20b), and the multiple through hole (20b) being arranged circumferentially along described sleeve pipe (20) is each described
A slips (30) is movably installed with through hole (20b), the one side and the push rod (10) of each slips (30)
The conical surface (11a) of one end in frustum be in contact.
2. dismantling device according to claim 1, it is characterised in that the slips (30) contacts with the conical surface (11a)
One side be concave surface (30c), the concave surface (30c) is fitted on the conical surface (11a).
3. dismantling device according to claim 1, it is characterised in that the dismantling device also includes being arranged on described sleeve pipe
(20) position limiting structure on, the position limiting structure are used for the displacement for limiting radial direction of the slips (30) along the push rod (10).
4. dismantling device according to claim 3, it is characterised in that the position limiting structure includes shell fragment (41), the bullet
One end of piece (41) is fixedly connected in described sleeve pipe (20), and the other end of the shell fragment (41) is pressed in the another of the slips (30)
On one side.
5. dismantling device according to claim 4, it is characterised in that be provided with the another side of the slips (30) recessed
Groove (30b), the shell fragment (41) are pressed in the groove (30b).
6. according to the dismantling device described in any one of Claims 1 to 5, it is characterised in that described in the setting of described sleeve pipe (20)
The end face closing of one end of through hole (20b).
7. according to the dismantling device described in any one of Claims 1 to 5, it is characterised in that described sleeve pipe (20) includes coaxially setting
The first cylinder and the second cylinder put, the through hole (20b) are arranged on first cylinder, and the internal thread (20a) is set
On second cylinder, first cylinder and second cylinder are in cylindrical tube, and the external diameter of second cylinder is more than
The external diameter of first cylinder.
8. according to the dismantling device described in any one of Claims 1 to 5, it is characterised in that the other end of the push rod (10) is in
Hexa-prism, described sleeve pipe (20) include the first cylinder and the second cylinder being coaxially disposed, and the through hole (20b) is arranged on described
On first cylinder, the internal thread (20a) is arranged on second cylinder, and second cylinder is in six prismatics tubulose.
9. according to the dismantling device described in any one of Claims 1 to 5, it is characterised in that described sleeve pipe is provided with three on (20)
The individual through hole (20b).
10. according to the dismantling device described in any one of Claims 1 to 5, it is characterised in that the another side of the slips (30)
On be provided with anti-skid structure (30a).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610756897.XA CN107791204A (en) | 2016-08-29 | 2016-08-29 | A kind of dismantling device of tubular member |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610756897.XA CN107791204A (en) | 2016-08-29 | 2016-08-29 | A kind of dismantling device of tubular member |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107791204A true CN107791204A (en) | 2018-03-13 |
Family
ID=61529205
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610756897.XA Pending CN107791204A (en) | 2016-08-29 | 2016-08-29 | A kind of dismantling device of tubular member |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107791204A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110076726A (en) * | 2019-05-06 | 2019-08-02 | 西南石油大学 | Installing and dismounting pipe thread device in a kind of pipe |
| CN110524405A (en) * | 2019-09-18 | 2019-12-03 | 安徽多邦珩磨技术有限公司 | A kind of honing feeding device and its method for fetching |
| CN110919598A (en) * | 2019-12-30 | 2020-03-27 | 中核武汉核电运行技术股份有限公司 | Disassembling tool for filter inside horizontal resin catcher |
| CN112855055A (en) * | 2019-11-28 | 2021-05-28 | 中国石油天然气股份有限公司 | Screen pipe running tool |
| CN116442173A (en) * | 2023-06-19 | 2023-07-18 | 新乡市长岭金属制品有限公司 | Special tool for installing tailless swivel nut |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3600984A (en) * | 1969-04-28 | 1971-08-24 | John D Bihlmaier | Expansible allen setscrew wrench |
| CN201604126U (en) * | 2010-03-02 | 2010-10-13 | 哈尔滨飞机工业集团有限责任公司 | Pipe thread extraction device |
| CN204382215U (en) * | 2014-12-19 | 2015-06-10 | 福建省农业科学院畜牧兽医研究所 | The screw thread tube swelling that breaks revolves and gets device |
| US20150343624A1 (en) * | 2013-02-14 | 2015-12-03 | ToolTech, LLC | Dutchman Fastener Removal Tool |
-
2016
- 2016-08-29 CN CN201610756897.XA patent/CN107791204A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3600984A (en) * | 1969-04-28 | 1971-08-24 | John D Bihlmaier | Expansible allen setscrew wrench |
| CN201604126U (en) * | 2010-03-02 | 2010-10-13 | 哈尔滨飞机工业集团有限责任公司 | Pipe thread extraction device |
| US20150343624A1 (en) * | 2013-02-14 | 2015-12-03 | ToolTech, LLC | Dutchman Fastener Removal Tool |
| CN204382215U (en) * | 2014-12-19 | 2015-06-10 | 福建省农业科学院畜牧兽医研究所 | The screw thread tube swelling that breaks revolves and gets device |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110076726A (en) * | 2019-05-06 | 2019-08-02 | 西南石油大学 | Installing and dismounting pipe thread device in a kind of pipe |
| CN110076726B (en) * | 2019-05-06 | 2021-04-09 | 西南石油大学 | Pipe fastener mounting and dismounting device in pipe |
| CN110524405A (en) * | 2019-09-18 | 2019-12-03 | 安徽多邦珩磨技术有限公司 | A kind of honing feeding device and its method for fetching |
| CN112855055A (en) * | 2019-11-28 | 2021-05-28 | 中国石油天然气股份有限公司 | Screen pipe running tool |
| CN112855055B (en) * | 2019-11-28 | 2022-07-05 | 中国石油天然气股份有限公司 | Screen pipe running tool |
| CN110919598A (en) * | 2019-12-30 | 2020-03-27 | 中核武汉核电运行技术股份有限公司 | Disassembling tool for filter inside horizontal resin catcher |
| CN116442173A (en) * | 2023-06-19 | 2023-07-18 | 新乡市长岭金属制品有限公司 | Special tool for installing tailless swivel nut |
| CN116442173B (en) * | 2023-06-19 | 2023-09-08 | 新乡市长岭金属制品有限公司 | Special tool for installing tailless swivel nut |
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Application publication date: 20180313 |