CN106195440B - Water supply line construction pipe drawing device and tube drawing construction method - Google Patents
Water supply line construction pipe drawing device and tube drawing construction method Download PDFInfo
- Publication number
- CN106195440B CN106195440B CN201610725168.8A CN201610725168A CN106195440B CN 106195440 B CN106195440 B CN 106195440B CN 201610725168 A CN201610725168 A CN 201610725168A CN 106195440 B CN106195440 B CN 106195440B
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- Prior art keywords
- cylinder
- pipeline
- hydraulic cylinders
- tube
- hydraulic
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L1/00—Laying or reclaiming pipes; Repairing or joining pipes on or under water
- F16L1/024—Laying or reclaiming pipes on land, e.g. above the ground
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
- B23P19/02—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for connecting objects by press fit or for detaching same
- B23P19/022—Extracting or inserting relatively long parts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
- B23P19/02—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for connecting objects by press fit or for detaching same
- B23P19/025—For detaching only
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
- B23P19/02—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for connecting objects by press fit or for detaching same
- B23P19/027—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for connecting objects by press fit or for detaching same using hydraulic or pneumatic means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L1/00—Laying or reclaiming pipes; Repairing or joining pipes on or under water
- F16L1/024—Laying or reclaiming pipes on land, e.g. above the ground
- F16L1/06—Accessories therefor, e.g. anchors
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
- Emergency Lowering Means (AREA)
Abstract
Water supply line construction pipe drawing device and tube drawing construction method, pipe drawing device include holding part and driving mechanism tightly, hold part tightly and use hooping structure, are bolted and are constituted respectively at both ends by two semicircular bands；Driving mechanism includes two hydraulic cylinders, two hydraulic cylinders are arranged in parallel in the same side of hooping structure, the cylinder rod end of two hydraulic cylinders forms with the both ends connecting portion of two semicircle bands connected respectively, two hydraulic cylinders are separately fixed on respective oil cylinder bracket, the hanging platform of cooperation can be formed with pipeline major part flange by being equipped with close to the inside of one end that hydraulic cylinder cylinder rod is stretched out on each oil cylinder bracket, and lanyard part is separately installed at the both ends of each oil cylinder bracket；Two hydraulic cylinders are connected by the oil supply system of pipeline and peripheral hardware respectively.Tube drawing construction method, step are；S1 pipe drawing devices are installed in place；S2 opens oil supply system, realizes tube drawing.The present invention is not limited by construction site, improves pipeline construction efficiency.
Description
Technical field
The invention belongs to water supply line technical field of construction, more particularly to water supply line construction is applied with pipe drawing device and tube drawing
Work method.
Background technology
In the links of waterline construction, frequently encounters mounted pipe, short tube, suppresses the pipes such as plug with wanting
Again the problem of transfering to.The extraction of this large scale ductile iron pipe, typically rely on large scale equipment such as excavator, loading machine,
The cooperations such as crane are extracted, and are operated very troublesome, from time, cost and working efficiency for be very be unfavorable for scene
Construction.In addition, some construction sites cannot be introduced into large scale equipment, in this way, further increasing the difficulty of tube drawing.
Invention content
The present invention provides a kind of water supply line construction pipe drawing device to solve technical problem present in known technology
And tube drawing construction method, the pipe drawing device is simple in structure, is not limited by construction site, flexible and convenient to use, can reduce tube drawing
Construction cost, the tube drawing construction method improve pipeline construction efficiency.
The present invention is adopted the technical scheme that solve technical problem present in known technology：
A kind of water supply line construction pipe drawing device, it is characterised in that：Include with the holding part of tube fit and with holding
The driving mechanism of part connection, the holding part use hooping structure, hooping structure to be distinguished at both ends by two semicircular bands
Composition is bolted；The driving mechanism uses hydraulic drive mechanism comprising two hydraulic cylinders, two hydraulic cylinders are parallel
Be arranged in the same side of hooping structure, the cylinder rod ends of two hydraulic cylinders respectively with the both ends connecting portion shape of two halves circle band
At being fixedly connected, two hydraulic cylinders are separately fixed on respective oil cylinder bracket, close to hydraulic cylinder on each oil cylinder bracket
The inside of one end that bar stretches out is equipped with the hanging platform that cooperation can be formed with pipeline major part flange, distinguishes at the both ends of each oil cylinder bracket
Lanyard part is installed；Two hydraulic cylinders are connected by the oil supply system of pipeline and peripheral hardware respectively.
Preferably：Two semicircular bands are by band iron material machine-shaping.
Preferably：Lanyard part uses hanging ring structure or hook structure.
A kind of tube drawing construction method, which is characterized in that use any water supply line constructions of claim 1-3 and use
The step of pipe drawing device, tube drawing is：
S1 pipe drawing devices are installed in place：First by two semicircular bands under the shape body of separation, obvolvent one on the other
On pipeline to be pulled out；Then manually or by small-sized pulling apparatus, by two drawstrings, wherein the both ends of a drawstring
The two lanyard parts that two cylinder brackets are located at front end are connected, the both ends of another drawstring connect two extensions that two cylinder brackets are located at rear end
It restricts part, two cylinder brackets and two hydraulic cylinder synchronous on cylinder bracket is transferred to and are connected with pipeline to be pulled out
The both sides of fixed -piping, and so that the major part flange position of hanging platform and fixed -piping on two cylinder brackets is formed and be affiliated to cooperation；Most
The connecting portion by the end of the cylinder rod of two hydraulic cylinders respectively with two semicircle band both ends is fixed by bolt afterwards
Connection, while the hooping structure for making two semicircular bands be formed is held tightly on pipeline to be pulled out；
After S2 pipe drawing devices are installed in place, oil supply system is opened, two hydraulic cylinder synchronous actions apply outward to cylinder rod
Launch force, two cylinder brackets are limited by the major part flange position of fixed -piping, so that two cylinder rods is passed through hooping structure and pass power
It moves on pipeline to be pulled out, so that pipeline to be pulled out is obtained an outside pull out force, when the effect for being applied to both sides cylinder rod
When power reaches the friction value of tube wall and cushion rubber, pipe is pulled out, and completes tube drawing action.
The invention has the advantages and positive effects that：
This pipe drawing device is mainly made of anchor ear, two hydraulic cylinders and two cylinder brackets, and overall structure is simple, is used
When, anchor ear is held tightly on pipeline to be pulled out, two oil cylinders and two cylinder brackets be respectively arranged with pipeline to be pulled out
The both sides of connected fixed -piping, except outside the hydraulic system that connects, mainly occupy the space in existing pipeline foundation pit, therefore not
It is limited, is had the advantages that flexible and convenient to use by construction site.The pipe drawing device is set compared to the large size that existing tube drawing uses
Standby, use cost is relatively low, in this way, the construction cost of tube drawing can be greatly lowered.It is constructed using the tube drawing of this pipe drawing device
Method, since the installation of pipe drawing device and the operation of tube drawing are more convenient and time saving and energy saving, in this way, pipe is also greatly improved
The efficiency of line construction.
Description of the drawings
Fig. 1 is the structural schematic diagram of pipe drawing device of the present invention and water pipeline cooperation.
In figure：1, part is held tightly；1-1, semicircular band；1-2, bolt；2, driving mechanism；2-1, hydraulic cylinder；2-2, oil
Bracket cylinder；2-2-1, hanging platform；2-3, lanyard part；1 ', pipeline to be pulled out；2 ', fixed -piping；2-1 ', major part flange.
Specific implementation mode
In order to further understand the content, features and effects of the present invention, the following examples are hereby given, and coordinate attached drawing
Detailed description are as follows：
Referring to Fig. 1, a kind of water supply line construction pipe drawing device, mainly by with tube fit holding part 1 and with embrace
2 two parts of driving mechanism of tight part connection are constituted.
The holding part uses hooping structure, hooping structure to pass through spiral shell respectively at both ends by two semicircular band 1-1
Bolt 1-2 is connected and composed, specifically, outwardly extending flanging, the flanging at both ends is arranged at both ends in two semicircular bands
Bolt hole is provided on part, two semicircular bands are connected to form hooping structure by the flanging at both ends.
The driving mechanism uses hydraulic drive mechanism comprising two hydraulic cylinder 2-1, two hydraulic cylinders are arranged in parallel in
The same side of hooping structure, the both ends connecting portion of the cylinder rod ends of two hydraulic cylinders respectively with two halves circle band form fixation
Connection, specifically, flat structure is made in the cylinder rod end of two hydraulic cylinders, the cylinder rod end of two hydraulic cylinders is clamped in respectively
It is next by bolt lock in respective side cooperation flanging between the respective side cooperation flanging of two semicircular bands, it also achieves
With being fixedly connected for cylinder rod end.Two hydraulic cylinders are separately fixed on an oil cylinder bracket 2-2, are leaned on each oil cylinder bracket
The inside of one end that nearly hydraulic cylinder cylinder rod is stretched out is equipped with the hanging platform 2-2-1 that cooperation can be formed with pipeline major part flange, in each oil
The both ends of bracket cylinder are separately installed with lanyard part 2-3.Two hydraulic cylinders are connected by the oil supply system of pipeline and peripheral hardware respectively, are supplied
Oil system refers to existing hydraulic cylinder oil supply system, includes mainly hydraulic pump, Fuel Tanking Unit, control valve and connecting line, at this
In invention, hydraulic pump preferably uses the gasoline engine hydraulic pump structure of rated pressure 12.5MPA, it is possible to provide larger power output.
Above-mentioned oil supply system is not shown in the accompanying drawings.
In above structure, two semicircular bands are preferably by band iron material machine-shaping.Specifically, 80*8 can be used
Band iron machine-shaping.
In above structure, lanyard part uses hanging ring structure or hook structure.
The step of a kind of tube drawing construction method, uses above-mentioned water supply line construction pipe drawing device, tube drawing be：
S1 pipe drawing devices are installed in place：First by two semicircular bands under the shape body of separation, obvolvent one on the other
On pipeline to be pulled out, specifically, keeping the tuck portion one at two semicircular band both ends a pair of just, at this time on flanging
Bolt hole is also to positive status；Then artificial or by small-sized pulling apparatus, by two drawstrings, wherein drawstring
Both ends connect the two lanyard parts that two cylinder brackets are located at front end, and the both ends of another drawstring connect two cylinder brackets and are located at rear end
Two lanyard parts transfer to two cylinder brackets and two hydraulic cylinder synchronous on cylinder bracket and pipeline 1 ' to be pulled out
The both sides of connected fixed -piping 2 ', i.e. a cylinder bracket and a hydraulic cylinder are arranged in the side of fixed -piping, another
Cylinder bracket and another hydraulic cylinder are arranged in the other side of fixed -piping, and make the hanging platform on two cylinder brackets and fixed -piping
Major part flange position 2-1 ' formation be affiliated to cooperation；Finally by the end of the cylinder rod of two hydraulic cylinders respectively with two halves circle band
The connecting portion at both ends is fixedly connected by bolt, specifically, the flat end of two cylinder rods is inserted respectively into two halves circle
Band both ends correspondence flanging between, and by the bolt of corresponding two flangings of connection, the flat end of cylinder rod is fixedly clamped, together
When so that two semicircular bands is formed hooping structure hold tightly in pipeline to be pulled out；
After S2 pipe drawing devices are installed in place, oil supply system is opened, two hydraulic cylinder synchronous actions apply outward to cylinder rod
Launch force, two cylinder brackets are limited by the major part flange position of fixed -piping, so that two cylinder rods is passed through hooping structure and pass power
It moves on pipeline to be pulled out, so that pipeline to be pulled out is obtained an outside pull out force, when the effect for being applied to both sides cylinder rod
When power reaches the friction value of tube wall and cushion rubber, pipe is pulled out, and completes tube drawing action.
Above-mentioned pipe drawing device and tube drawing construction method is also applied for suppressing the pipes such as plug and match in addition to being extracted suitable for pipeline
The extraction of part.
Using this pipe drawing device, can after water pipeline bulge test, in the case where not damaging oversleeve, extract pipe or
Person suppresses plug, does not need large scale equipment, it is only necessary to which simple manual operation makes construction simplify without geographical restrictions, and saving is set
It is standby, fund is saved, production efficiency is greatly improved.This pipe drawing device is especially applied some large scale equipments are unapproachable
Building site section, there is preferable application.
Claims (3)
1. a kind of tube drawing construction method, which is characterized in that using water supply line construction pipe drawing device：Include and tube fit
The driving mechanism held part tightly and connect with holding part, the holding part use hooping structure, hooping structure semicircular by two
Composition is bolted at both ends in band respectively；The driving mechanism uses hydraulic drive mechanism comprising two hydraulic cylinders,
Two hydraulic cylinders are arranged in parallel in the same side of hooping structure, the cylinder rod ends of two hydraulic cylinders respectively with two halves circle band
Both ends connecting portion forms a fixed connection, and two hydraulic cylinders are separately fixed on respective oil cylinder bracket, in each oil cylinder bracket
The upper inside close to one end that hydraulic cylinder cylinder rod is stretched out is equipped with the hanging platform that cooperation can be formed with pipeline major part flange, in each oil cylinder
The both ends of bracket are separately installed with lanyard part；Two hydraulic cylinders are connected by the oil supply system of pipeline and peripheral hardware respectively；Tube drawing
Step is：
S1 pipe drawing devices are installed in place：First by two semicircular bands under the shape body of separation, obvolvent one on the other is waiting for
On the pipeline of extraction；Then manually or by small-sized pulling apparatus, by two drawstrings, wherein the both ends connection of a drawstring
Two cylinder brackets are located at two lanyard parts of front end, and the both ends of another drawstring connect two lanyards that two cylinder brackets are located at rear end
Two cylinder brackets and two hydraulic cylinder synchronous on cylinder bracket are transferred to and are consolidated with what pipeline to be pulled out was connected by part
The both sides in fixed tube road, and so that the major part flange position of hanging platform and fixed -piping on two cylinder brackets is formed and be affiliated to cooperation；Finally
Company is fixed by bolt in connecting portion by the end of the cylinder rod of two hydraulic cylinders respectively with two semicircle band both ends
It connects, while the hooping structure for making two semicircular bands be formed is held tightly on pipeline to be pulled out；
After S2 pipe drawing devices are installed in place, oil supply system is opened, two hydraulic cylinder synchronous actions apply outside release to cylinder rod
Power, two cylinder brackets are limited by the major part flange position of fixed -piping, so that two cylinder rods is passed through hooping structure and arrive power transmission
On pipeline to be pulled out, pipeline to be pulled out is made to obtain an outside pull out force, when the active force for being applied to both sides cylinder rod reaches
When to the friction value of tube wall and cushion rubber, pipe is pulled out, and completes tube drawing action.
2. tube drawing construction method according to claim 1, it is characterised in that：Two semicircular bands are by band iron material
Machine-shaping.
3. tube drawing construction method according to claim 1, it is characterised in that：Lanyard part is using hanging ring structure or hook knot
Structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610725168.8A CN106195440B (en) | 2016-08-25 | 2016-08-25 | Water supply line construction pipe drawing device and tube drawing construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610725168.8A CN106195440B (en) | 2016-08-25 | 2016-08-25 | Water supply line construction pipe drawing device and tube drawing construction method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106195440A CN106195440A (en) | 2016-12-07 |
| CN106195440B true CN106195440B (en) | 2018-08-21 |
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ID=57524277
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610725168.8A Active CN106195440B (en) | 2016-08-25 | 2016-08-25 | Water supply line construction pipe drawing device and tube drawing construction method |
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| Country | Link |
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| CN (1) | CN106195440B (en) |
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| CN108223913B (en) * | 2018-03-07 | 2023-09-05 | 山东顺河路桥工程有限公司 | Pipeline installation and backfill checking auxiliary tool |
| CN109895027A (en) * | 2019-04-01 | 2019-06-18 | 中建新疆建工（集团）有限公司 | Novel heavy socket pipe tube drawing device |
| CN111911711A (en) * | 2020-07-15 | 2020-11-10 | 谢祥松 | Natural gas energy pipeline laying construction method |
| CN112811350B (en) * | 2021-02-04 | 2024-06-14 | 大连轩泰重工有限公司 | Lifting pipe drawing trolley |
| CN113202975A (en) * | 2021-05-20 | 2021-08-03 | 中铁隧道局集团有限公司 | Underground obstacle pipeline processing method for urban restricted area |
| CN114211451B (en) * | 2021-10-28 | 2023-12-05 | 上海外高桥造船有限公司 | Tube drawing device for adjustable jig frame |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2113598B (en) * | 1981-12-15 | 1985-12-11 | Omega Software | Heat exchanger maintenance |
| JPS61257723A (en) * | 1985-05-04 | 1986-11-15 | Chiyoda Chem Eng & Constr Co Ltd | Extracting and extruding device of pipe bundle |
| JP2010017833A (en) * | 2008-07-14 | 2010-01-28 | Kurimoto Ltd | Pipe joint dismantling device and dismantling method |
| CN201419313Y (en) * | 2009-06-12 | 2010-03-10 | 上海船厂船舶有限公司 | Assembly and disassembly device for ship coupling |
| CN203141057U (en) * | 2012-12-18 | 2013-08-21 | 云南昆钢重型装备制造集团有限公司 | Drawing device |
| CN103612107A (en) * | 2013-11-25 | 2014-03-05 | 河北钢铁股份有限公司邯郸分公司 | Universal tool capable of quickly disassembling various components |
| CN205978809U (en) * | 2016-08-25 | 2017-02-22 | 中国水利水电第十三工程局有限公司 | Pipe drawing device is used in water feeding line construction |
-
2016
- 2016-08-25 CN CN201610725168.8A patent/CN106195440B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2113598B (en) * | 1981-12-15 | 1985-12-11 | Omega Software | Heat exchanger maintenance |
| JPS61257723A (en) * | 1985-05-04 | 1986-11-15 | Chiyoda Chem Eng & Constr Co Ltd | Extracting and extruding device of pipe bundle |
| JP2010017833A (en) * | 2008-07-14 | 2010-01-28 | Kurimoto Ltd | Pipe joint dismantling device and dismantling method |
| CN201419313Y (en) * | 2009-06-12 | 2010-03-10 | 上海船厂船舶有限公司 | Assembly and disassembly device for ship coupling |
| CN203141057U (en) * | 2012-12-18 | 2013-08-21 | 云南昆钢重型装备制造集团有限公司 | Drawing device |
| CN103612107A (en) * | 2013-11-25 | 2014-03-05 | 河北钢铁股份有限公司邯郸分公司 | Universal tool capable of quickly disassembling various components |
| CN205978809U (en) * | 2016-08-25 | 2017-02-22 | 中国水利水电第十三工程局有限公司 | Pipe drawing device is used in water feeding line construction |
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| Publication number | Publication date |
|---|---|
| CN106195440A (en) | 2016-12-07 |
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Address after: 300384 Tianjin Binhai New Area High-tech Zone Huayuan Industrial Area No. 2, 4-2101 Patentee after: China Construction Municipal Construction Group Co., Ltd. Address before: 300384 No. 2, Rongyuan Road, Huayuan Industrial Area, Nankai District, Tianjin 4-2101 Patentee before: Sinohydro Tianjin Engineering Co.,Ltd. |