CN202427847U - Hydraulic expanding machine - Google Patents
Hydraulic expanding machine Download PDFInfo
- Publication number
- CN202427847U CN202427847U CN201220008239XU CN201220008239U CN202427847U CN 202427847 U CN202427847 U CN 202427847U CN 201220008239X U CN201220008239X U CN 201220008239XU CN 201220008239 U CN201220008239 U CN 201220008239U CN 202427847 U CN202427847 U CN 202427847U
- Authority
- CN
- China
- Prior art keywords
- oil cylinder
- hydraulic
- pipe
- expanding
- support
- 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
Links
Images
Landscapes
- Actuator (AREA)
Abstract
The utility model discloses a hydraulic expanding machine which is characterized by comprising an oil cylinder, support base plates, reset pistons, a hydraulic station and rolling support mechanisms mounted at the two ends of the oil cylinder, wherein a through-pipe joint on the oil cylinder is connected with the hydraulic station through an ultrahigh-pressure oil pipe; the support base plates are mounted on the radial cylinders equally processed axially on the outer side of the oil cylinder; the reset pistons are mounted on the cylinders; each rolling support mechanism is composed of a bracket, a heavy bearing, a lifting strut and a rotation support; the heavy bearing is mounted on the bracket; the bracket is mounted on the lifting strut; the lifting strut is mounted on the rotation support; and the rotation supports are mounted at the two ends of the oil cylinder. Through the utility model, the expanding part of a weld-joint steel pipe can be accurately positioned according to the requirements of the expanding technology; after the equipment is started, the expanding technology is realized at the lowest energy consumption within the shortest time; and since the expanding hydraulic cylinder is very convenient to move, the hydraulic expanding machine is very suitable for continuous production, changes the working environment and improves the product quality.
Description
(1) technical field:
The utility model relates to a kind of novel hydraulic expander, especially a kind of with all kinds pipeline according to the pipe expanding technology requirement of rising, realize device to diameter of steel tube " increase ", " shaping ".
(2) background technology:
Along with the scientific and technological level high speed development, social productive forces improve.More economical, practical product, equipment are constantly created to adapt to human survival and social economy's construction, need a large amount of energy and resource thus.The energy is transported to each industry ground by the place of production, and the general practice is to adopt the pipe method of low consumption environment protection at present.Therefore an urgent demand pipeline manufacturing industry develops to the direction of high strength, high tenacity, and improves constantly what tube quality required, and it is constantly progressive to have promoted tube-making technology and technology, and pipeline manufacturing equipment function is more powerful.
In recent years, along with the adjustment of national energy layout, pipeline carries the quantity of the various energy to improve constantly.Bigbore demand pipe amount sharply increases, and requires also increasingly high to tube quality.In making large diameter steel pipe, all exist the not high problem of geometric accuracy to some extent.Particularly adopt the moulding of stepping punching type, many foldings cover vestiges are arranged in the peripheral direction of steel pipe.This directly has influence on the ovality of steel pipe.Because the steel body can follow thermal stress to occur bending and deformation when welding, the linearity of steel pipe is affected in addition.
In order to improve tube quality; Improve the yield strength of steel pipe; Residual stress that causes when eliminating welding and butt welded seam quality and welding performance check are so in the end use expanding technology in one preface in the general steel tube manufacture technique.Hole enlargement equipment is requisite lathe on the large-diameter welded steel pipe production line.
At present, expanding machine mainly contains two kinds of mechanical type and fluid pressure types.The sixties in 20th century because hydraulic technique level at that time, during with the hydraulic pressure hole enlargement filling time long, production efficiency is low, and investment is greatly, mould is many, labour intensity is big during the replacing specification, so replaced by mechanical type.But the mechanical type expanding machine relies on sphenoid to move axially-movable is become radial motion at work, and wherein can't avoid is friction mechanism.Impel the hole enlargement drift easy to wear, efficient is low, reduces service life.
(3) utility model content:
The purpose of the utility model is to provide a kind of hydraulic pressure expanding machine; It can solve the deficiency of prior art, is applied on the large diameter steel pipe manufacturing process steel pipe weldment carried out hole enlargement, apparatus for shaping; Confirm pressure, flow and diameter of steel tube deflection scientifically and rationally; Through the expanding machine hole enlargement, can make the ovality≤0.8%D of steel pipe, linearity is 0.1% to the maximum in the steel pipe length range.The maximum deviation of pipe diameter when inner periphery is measured is ± 3mm, to reach the pipe-line construction standard-required; Meanwhile realized low consumption, apace, the target of the output that overflows.
The technical scheme of the utility model: a kind of hydraulic pressure expanding machine is characterized in that this rolling and bearing mechanism that it comprises oil cylinder, bearing plate, return piston, Hydraulic Station and is installed in the oil cylinder two ends; Free flow coupling on the said oil cylinder is connected with Hydraulic Station through the super-pressure oil pipe; On the radially cylinder body that the outside that said bearing plate is installed in oil cylinder processes along axial five equilibrium; Said return piston is installed on the cylinder body; Said rolling and bearing mechanism is made up of support, heavy bearing, lifting support and rotary support; Wherein, heavy bearing is rack-mount, and support is installed on the lifting support, and lifting support is installed in rotary support, and rotary support is installed in the oil cylinder two ends.
Said Hydraulic Station connects pressure switch.
Said rolling and bearing mechanism connects the adjustment screw of regulating radial distance.
The quantity of said bearing plate: during pipe diameter D≤300mm, bearing plate quantity is 6; When pipe diameter D was 300～600mm, bearing plate quantity was 8; When pipe diameter D was 600～900mm, bearing plate quantity was 10; When pipe diameter D was 900～1500mm, bearing plate quantity was 12.
The technical process of the utility model: with the high strength oil cylinder is matrix, processes radially cylinder body in the outside of oil cylinder along axial five equilibrium, and return piston is installed.Secondly select the stroke of return piston according to the size of pipe expanding amount; Confirm bearing plate quantity, with the arc length and the length of steel pipe inwall contact surface.Support, heavy bearing and lifting support are connected on the rotary support, can make three fulcrums move equal radial distance simultaneously through rotation adjustment screw.Drag the hole enlargement cylinder by this rolling and bearing mechanism at oil cylinder two ends and move arbitrarily, the steel pipe position that needs hole enlargement is processed according to technological requirement at pipe interior.
By the super-pressure oil pipe free flow coupling of Hydraulic Station on the hole enlargement oil cylinder is connected in series.Hydraulic Station can provide variable and greater than the above liquid of 60MPa.High-pressure oil pipe is convenient to the hole enlargement oil cylinder and is moved to any position of steel pipe for the hydralic hose of band steel wire protection cover.Both made things convenient for hole enlargement, simple to operate again.On hydraulic system, arranged pressure switch.Motor just can autostop when system pressure surpasses setting value, reduces energy consumption, avoids producing too much heat, improves the hydraulic system transmission efficiency.
The operation principle of the utility model: generally according to the clear and definite deflection of pipe expanding technological requirement.By empirical equation: p=ab б
s(ln λ+4L/ (D
t-D
0)) (a-material correction factor.B-size correction factor.б
s-normal temperature lower yield stress.λ-percentage elongation.The L-axial length.D
tInternal diameter behind the-pipe deformation.D
0Internal diameter before the-pipe deformation), pipe expanding internal surface area S=π D
tL learns the theoretical pressure value of pipe expanding: F=Sp.Can obtain the liquid pressure value that Hydraulic Station provides thus, thus the setting pressure relay.
With reference to the λ value, can tentatively select flow rate of hydraulic system.According to pipe diameter D size, can know through experiment: D≤300mm, bearing plate quantity is 6; D is 300～600mm, and bearing plate quantity is 8; D is 600～900mm, and bearing plate quantity is 10; D is 900～1500mm, and bearing plate quantity is 12.
Can confirm return piston quantity according to hole enlargement axial length and pressure, its numerical value is limited by manufacturer's working ability also.The sealing device of piston adopts the compensating groove form.Help on the one hand moving the service life of improving oil cylinder on the other hand flexibly.
In the expanding technology process, should observe " exceeding the proper limits in righting a wrong ".
The utility model is that a kind of employing super high pressure hydraulic technology is carried out expander to large-diameter welded steel pipe.Pipe expanding, particularly after welded still pipe is made, the technological equipment that must adopt.Through to the large-diameter welded steel pipe hole enlargement, can change steel pipe in time and improve yield strength because of flow harden, the zone that can avoid steel pipe stress to concentrate produces hydrogen embrittlement and crack situation, improves the toughness index of steel pipe.
The utility model adopts the superpressure technology radially directly steel pipe to be exerted pressure through the circular arc support plate at steel pipe hydraulic pressure hole enlargement technology and machinery expanding technological synthesis one, makes it diameter and increases.Because hydraulic flow can be adjusted, so its support plate movement velocity is fully consistent with the deformation velocity of steel pipe.Avoid splitting because of the hole enlargement excessive velocities rises.
The utility model is according to diameter of steel tube actual value and the axial length that needs hole enlargement, and adjustment hole enlargement wheel constitutes the numerical value close with diameter of steel tube, rationally confirms support plate length, radial piston haul distance.To pipe expanding the time, through adjusting pressure valve gradually, be applied to the steel pipe radial load and constantly increase, up to its radial dimension according with process requirements.Also can in time pass to electric-control system (like PLC), control ratio pressure valve to the steel pipe radial-deformation through shielded cable through being installed in the displacement transducer on the steel pipe periphery.When reaching preset definite value, pressure valve stops supercharging.Its control accuracy is generally ± 0.3mm.
The course of work of the utility model:, select suitable hole enlargement hydraulic cylinder at first according to the expanding technology required value.Put it in the steel tube inner hole, rotation adjustment screw makes three diameters that heavy bearing constituted that are distributed in the oil cylinder two ends equal pipe diameter.The diameter that bearing plate constituted should be less than pipe diameter 5mm～8mm.
Secondly the hole enlargement oil cylinder is moved to the pipe expanding position.The primer fluid pressing system, the adjustment pressure switch avoids steel tube surface be full of cracks to occur through the control flow, and controlled pressure is avoided occurring overflowing.Also can compare definite pipe expanding position of precision through the positioning rule on the oil cylinder, error is less than 2mm.
The superiority of the utility model: 1. employing this programme can be according to the expanding technology requirement, accurate butt welded seam pipe expanding spots localization; 2. behind the device start, realize expanding technology with the shortest time, minimum energy consumption; 3. move because of the hole enlargement hydraulic cylinder is very easily convenient, be particularly suitable for continuous production, but change working environment, improved product quality; 4. this device can be widely used in the weld seam steel pipe, especially greater than 800mm diameter steel pipe, and outstanding more its high efficiency, high reliability; 5. do not rub because of having in the expanding technology process, so improved service life; 6. though number of parts is many, need the super-pressure components and parts, it has thoroughly improved working environment, reduces non-cutting time, increases productivity; 7. the utility model is applied on the large diameter steel pipe manufacturing process; The steel pipe weldment is carried out hole enlargement, apparatus for shaping; Confirm pressure, flow and diameter of steel tube deflection scientifically and rationally; Through the expanding machine hole enlargement, can make the ovality≤0.8%D of steel pipe, linearity is 0.1% to the maximum in the steel pipe length range; The maximum deviation of pipe diameter when inner periphery is measured is ± 3mm, to reach the pipe-line construction standard-required; Meanwhile realized low consumption, apace, the target of the output that overflows.
(4) description of drawings:
The structural representation of the related a kind of hydraulic pressure expanding machine of Fig. 1 the utility model.
The sketch map of related a kind of hydraulic pressure expanding machine rolling and bearing mechanism one side of Fig. 2 the utility model.
Wherein, 1 is support, and 2 is heavy bearing, and 3 is lifting support, and 4 is rotary support, and 5 is free flow coupling, and 6 is the super-pressure oil pipe, and 7 are the adjustment screw, and 8 is oil cylinder, and 9 is bearing plate, and 10 is return piston, and 11 is Hydraulic Station, and 12 is pressure switch.
(5) specific embodiment:
Embodiment: a kind of hydraulic pressure expanding machine (seeing Fig. 1, Fig. 2) is characterized in that it comprises oil cylinder 8, bearing plate 9, return piston 10, Hydraulic Station 11 and this rolling and bearing mechanism that is installed in the oil cylinder two ends; Free flow coupling 5 on the said oil cylinder 8 is connected with Hydraulic Station 11 through super-pressure oil pipe 6; On the radially cylinder body that the outside that said bearing plate 9 is installed in oil cylinder 8 processes along axial five equilibrium; Said return piston 10 is installed on the cylinder body; Said rolling and bearing mechanism is made up of support 1, heavy bearing 2, lifting support 3 and rotary support 4; Wherein, heavy bearing 2 is installed on the support 1, and support 1 is installed on the lifting support 3, and lifting support 3 is installed in rotary support 4, and rotary support 4 is installed in oil cylinder 8 two ends.
Said Hydraulic Station 11 connects pressure switch 12.(see figure 2)
Said rolling and bearing mechanism connects the adjustment screw 7 of regulating radial distance.(see figure 1)
The quantity of said bearing plate 9: during pipe diameter D≤300mm, bearing plate quantity is 6; When pipe diameter D was 300～600mm, bearing plate quantity was 8; When pipe diameter D was 600～900mm, bearing plate quantity was 10; When pipe diameter D was 900～1500mm, bearing plate quantity was 12.
Claims (4)
1. a hydraulic pressure expanding machine is characterized in that this rolling and bearing mechanism that it comprises oil cylinder, bearing plate, return piston, Hydraulic Station and is installed in the oil cylinder two ends; Free flow coupling on the said oil cylinder is connected with Hydraulic Station through the super-pressure oil pipe; On the radially cylinder body that the outside that said bearing plate is installed in oil cylinder processes along axial five equilibrium; Said return piston is installed on the cylinder body; Said rolling and bearing mechanism is made up of support, heavy bearing, lifting support and rotary support; Wherein, heavy bearing is rack-mount, and support is installed on the lifting support, and lifting support is installed in rotary support, and rotary support is installed in the oil cylinder two ends.
2. according to the said a kind of hydraulic pressure expanding machine of claim 1, it is characterized in that said Hydraulic Station connects pressure switch.
3. according to the said a kind of hydraulic pressure expanding machine of claim 1, it is characterized in that said rolling and bearing mechanism connects the adjustment screw of regulating radial distance.
4. according to the said a kind of hydraulic pressure expanding machine of claim 1, it is characterized in that the quantity of said bearing plate: during pipe diameter D≤300mm, bearing plate quantity is 6; When pipe diameter D was 300～600mm, bearing plate quantity was 8; When pipe diameter D was 600～900mm, bearing plate quantity was 10; When pipe diameter D was 900～1500mm, bearing plate quantity was 12.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220008239XU CN202427847U (en) | 2012-01-10 | 2012-01-10 | Hydraulic expanding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220008239XU CN202427847U (en) | 2012-01-10 | 2012-01-10 | Hydraulic expanding machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202427847U true CN202427847U (en) | 2012-09-12 |
Family
ID=46777322
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220008239XU Expired - Fee Related CN202427847U (en) | 2012-01-10 | 2012-01-10 | Hydraulic expanding machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202427847U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104785649A (en) * | 2015-05-02 | 2015-07-22 | 汪浩 | Pipeline welding seam stress relief device adopting liquid nitrogen expanding |
| CN106111825A (en) * | 2016-08-24 | 2016-11-16 | 中冶辽宁德龙钢管有限公司 | A kind of Portable steel pipe expander and diameter enlarging method |
| CN108838285A (en) * | 2018-06-15 | 2018-11-20 | 中国重型机械研究院股份公司 | A kind of hydraulic direct-acting type steel pipe expanding head |
| CN108856534A (en) * | 2018-06-15 | 2018-11-23 | 中国重型机械研究院股份公司 | A kind of hydraulic direct-acting type pipe end expanding machine |
| CN110153298A (en) * | 2019-06-27 | 2019-08-23 | 烟台豪德博尔机械设备有限公司 | Steel pipe bell and spigot automatic moulding production line |
| CN110722065A (en) * | 2019-10-24 | 2020-01-24 | 番禺珠江钢管（珠海）有限公司 | Local hydraulic pressure expanding device |
| CN112848244A (en) * | 2021-01-26 | 2021-05-28 | 宜宾学院 | Rotary pipeline expanding device |
-
2012
- 2012-01-10 CN CN201220008239XU patent/CN202427847U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104785649A (en) * | 2015-05-02 | 2015-07-22 | 汪浩 | Pipeline welding seam stress relief device adopting liquid nitrogen expanding |
| CN106111825A (en) * | 2016-08-24 | 2016-11-16 | 中冶辽宁德龙钢管有限公司 | A kind of Portable steel pipe expander and diameter enlarging method |
| CN108838285A (en) * | 2018-06-15 | 2018-11-20 | 中国重型机械研究院股份公司 | A kind of hydraulic direct-acting type steel pipe expanding head |
| CN108856534A (en) * | 2018-06-15 | 2018-11-23 | 中国重型机械研究院股份公司 | A kind of hydraulic direct-acting type pipe end expanding machine |
| CN110153298A (en) * | 2019-06-27 | 2019-08-23 | 烟台豪德博尔机械设备有限公司 | Steel pipe bell and spigot automatic moulding production line |
| CN110153298B (en) * | 2019-06-27 | 2024-06-11 | 豪德博尔(山东)智能装备有限公司 | Automatic forming production line for steel pipe faucet |
| CN110722065A (en) * | 2019-10-24 | 2020-01-24 | 番禺珠江钢管（珠海）有限公司 | Local hydraulic pressure expanding device |
| CN112848244A (en) * | 2021-01-26 | 2021-05-28 | 宜宾学院 | Rotary pipeline expanding device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202427847U (en) | Hydraulic expanding machine | |
| CN108673051B (en) | Numerical control rolling machine tool for rolling outer circle of torsion shaft | |
| CN103223453A (en) | Method and device for directly rolling steel pipe standard outer diameter to form taper pipe external thread, and product of taper pipe external thread | |
| CN104858285A (en) | Spinning method | |
| CN104550289B (en) | The method of extrusion forming curvature of space tubing of more punch-pin | |
| CN202667468U (en) | Hydraulic steel tube expanding machine | |
| CN108723162A (en) | A kind of method that Fluid pressure induction shapes tangential non-close variable cross-section tubular member | |
| CN102672067A (en) | Precise rotary rod pipe material blanking device with hydraulic controllable single piston | |
| CN102079039B (en) | Processing method for cladding inner walls of cylindrical workpieces by using stainless steel material | |
| CN105058833A (en) | Numerical control hydraulic machine | |
| CN104325055B (en) | A kind of fluid pressure type radial forging machine of mechanical trip adjustment of AC servo machinery driving | |
| CN104858284A (en) | Forward-spinning spinning method | |
| CN102248030A (en) | Straightener with convertible straightening roll system | |
| CN102407255B (en) | Production method of transition bridge bent tube of heavy-duty truck | |
| CN202015748U (en) | Overall axle tube extrusion forming equipment for semitrailer | |
| CN208879535U (en) | A kind of expanding equipment of spigot-and-socket welded still pipe | |
| CN204817596U (en) | Novel multi -functional single roller veneer reeling machine | |
| KR20230011597A (en) | Manufacturing method of eye bolt with reduced production speed and production cost | |
| CN102000730B (en) | Rotary pressure head device of lining bimetallic composite tube | |
| CN103203628A (en) | Gear ring blank molding equipment of flywheel assembly for automobile | |
| CN103341559B (en) | For the diel that metal pipe mouth is shaping | |
| CN102806463A (en) | Special assembling device for three-piece F-joints | |
| WO2020164209A1 (en) | Novel four-column hydraulic press | |
| CN105195542A (en) | Torsional vibration combined cold extrusion die | |
| CN217223065U (en) | 12000 ton steel sheet double-edge bending automatic device |
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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120912 Termination date: 20130110 |