CN109226542A - A kind of hydraulic oil pipe tube expanding joint component - Google Patents
A kind of hydraulic oil pipe tube expanding joint component Download PDFInfo
- Publication number
- CN109226542A CN109226542A CN201811373772.4A CN201811373772A CN109226542A CN 109226542 A CN109226542 A CN 109226542A CN 201811373772 A CN201811373772 A CN 201811373772A CN 109226542 A CN109226542 A CN 109226542A
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- Prior art keywords
- expanded joint
- oil pipe
- mandrel
- roller
- hydraulic oil
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- 239000010720 hydraulic oil Substances 0.000 title claims abstract description 23
- 239000003921 oil Substances 0.000 claims abstract description 38
- 230000004807 localization Effects 0.000 claims description 20
- 239000000463 material Substances 0.000 abstract description 22
- 238000000034 method Methods 0.000 abstract description 17
- 238000004519 manufacturing process Methods 0.000 abstract description 14
- 238000003466 welding Methods 0.000 abstract description 14
- 230000000916 dilatatory effect Effects 0.000 abstract description 3
- 229910052751 metal Inorganic materials 0.000 description 33
- 239000002184 metal Substances 0.000 description 33
- 238000012856 packing Methods 0.000 description 31
- 239000003292 glue Substances 0.000 description 19
- 238000013461 design Methods 0.000 description 13
- 238000010438 heat treatment Methods 0.000 description 12
- 239000000956 alloy Substances 0.000 description 10
- 229910045601 alloy Inorganic materials 0.000 description 10
- 239000004033 plastic Substances 0.000 description 10
- 229920003023 plastic Polymers 0.000 description 10
- 230000008569 process Effects 0.000 description 10
- 238000010586 diagram Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- 238000003780 insertion Methods 0.000 description 6
- 230000037431 insertion Effects 0.000 description 6
- 230000013011 mating Effects 0.000 description 6
- 238000012360 testing method Methods 0.000 description 4
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 235000013399 edible fruits Nutrition 0.000 description 3
- 238000005457 optimization Methods 0.000 description 3
- 238000005096 rolling process Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 230000008676 import Effects 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910052718 tin Inorganic materials 0.000 description 2
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 230000002238 attenuated effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052797 bismuth Inorganic materials 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 229910000743 fusible alloy Inorganic materials 0.000 description 1
- 229910052738 indium Inorganic materials 0.000 description 1
- 229910052745 lead Inorganic materials 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000005554 pickling Methods 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 238000010257 thawing Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D39/00—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders
- B21D39/04—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders of tubes with tubes; of tubes with rods
- B21D39/046—Connecting tubes to tube-like fittings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D41/00—Application of procedures in order to alter the diameter of tube ends
- B21D41/02—Enlarging
- B21D41/026—Enlarging by means of mandrels
- B21D41/028—Enlarging by means of mandrels expandable mandrels
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Earth Drilling (AREA)
Abstract
The present invention relates to a kind of hydraulic oil pipe tube expanding joint components, including oil pipe and the connector being cooperatively connected with oil pipe, expanded joint hole is offered on the connector, expanded joint hole inner wall is provided in the axial direction with expanded joint annular groove, and the expanded joint end and expanded joint hole of the oil pipe are cooperatively connected；It further include reamer, the counterbored end of the reamer and the expanded joint inner wall of end of oil pipe are cooperatively connected.The expanded joint end of oil pipe and expanded joint hole are cooperatively connected by the dilating effect of reamer, the welding procedure of solderability poor material high-voltage tube and connector can be substituted；Avoid bad hidden danger at high-voltage tube welded connecting；Reduce workshop welding pollution；Production efficiency is improved, production cost is reduced.
Description
Technical field
The present invention relates to a kind of hydraulic oil pipe tube expanding joint components.
Background technique
The type of attachment of high-pressure oil pipe and connector is usually to weld to realize, but need to expend a large amount of works due to welding at present
When, it is often more important that, the place of connection is easy to happen failure in operation.The prior art, which is badly in need of one kind, can pass through expanding joint process
The hydraulic oil pipe tube expanding joint component of connection.
Summary of the invention
It is an object of the invention to overcome defect existing in the prior art, providing one kind can be connected by expanding joint process
Hydraulic oil pipe tube expanding joint component.
To achieve the above object, the technical solution of the present invention is to provide a kind of hydraulic oil pipe tube expanding joint components, including
Oil pipe and the connector being cooperatively connected with oil pipe, offer expanded joint hole on the connector, expanded joint hole inner wall is provided in the axial direction with
Expanded joint annular groove, the expanded joint end and expanded joint hole of the oil pipe are cooperatively connected；
It further include reamer, the counterbored end of the reamer and the expanded joint inner wall of end of oil pipe are cooperatively connected.
The expanded joint end of oil pipe and expanded joint hole are cooperatively connected by the dilating effect of reamer, it is poor solderability can be substituted
The welding procedure of material high-voltage tube and connector；Avoid bad hidden danger at high-voltage tube welded connecting；Reduce workshop welding pollution；It improves
Production efficiency reduces production cost.
Preferably, the reamer includes outer tube, the outer tube is internally provided with mandrel, and the mandrel has
Taper, the front end of the outer tube radially offers multiple roller sky windows, is equipped with roller in the roller sky window, described
Roller has taper；The roller and mandrel, which roll, to be cooperated；The housing pipe outer wall is provided with external screw thread, goes back outside the outer tube
It is socketed with depth localization lantern ring, the depth localization lantern ring is connect with outer tube outer wall thread, depth localization lantern ring front end
It is additionally provided with cooperation contact ring, the cooperation contact ring is rotatablely connected by thrust bearing and depth localization set.
Such design can be conducted the bulbs of pressure to tube inner wall by the taper fit of mandrel and roller；Depth
The design of positioning ring can be according to position of the depth percentage regulation positioning ring of expanded joint position on outer tube.
Preferably, from front to back include mandrel cavity in the outer tube, the sliding with the coaxial arrangement of mandrel cavity
The aperture of cavity, the sliding cavity is greater than mandrel cavity, and the sliding cavity and mandrel cavity cohesive position are provided with limit
Face, the rear portion of the mandrel are provided with the positive stop lug boss with confined planes cooperation.Such design, can be to the maximum swelling of mandrel
Position is limited.
Preferably, the outer tube rear end is connected with rear end cap, the rear end cap is annular, passes through screw thread and housing
Pipe external connection offers rear end cap locking hole on the rear end cap；The portion of core back-end is connected with swollen hole control ring, described
Swollen hole control ring is threadedly coupled with portion of core back-end, is provided with swollen hole control ring locking hole in the swollen hole control ring；The core
When axis slides axially along mandrel cavity and sliding cavity, swollen hole control ring front end and the cooperation of rear end cap rear end are limited；Institute
State the drive connection end that core back-end is protruding across swollen hole control ring, and formation is connect with driving structure.Such design,
Can by rear end cap position and swollen hole control ring in the position in portion of core back-end, it is swollen to limit the aperture size of expansion
Swollen aperture size is bigger, and the distance between rear end cap and swollen hole control ring are bigger.
Preferably, the mandrel taper is 1:25~1:50；Mandrel is gradually thicker to the back-end from front end；The roller
Taper is adapted to mandrel taper, is gradually attenuated to the back-end in roller from front end.It is such to be dimensioned so that tube expander imports conveniently,
Tube expander axial thrust and radial expanded joint power largest optimization distribution, connector and tubing bonding strength and tightness are uniform.And it grasps
Make simple, using flexible, forming process is that extruding metal will not generate weld harmful gas and arc light, it is achieved that production is high
The advantages that efficiency, product expanded joint high quality, production process is pollution-free.
Preferably, being additionally provided with the inclination angle of 1 to 10 degree between the roller and mandrel.Tube expander importing side in this way
Just, pipe axial elongation when tube expansion, thus can Free Transform outward, therefore avoid protrusive tube expander and caused to pipe connection
Axial compression stress and deformation.Mechanical expanding can not only bear certain axial force, thermal shock and thermal cycle repeatedly, and operate
Simply, using flexible greatly improves production efficiency and energy saving.
Preferably, expanded joint hole inner wall is provided in the axial direction with multiple expanded joint annular grooves, the expanded joint annular is recessed
The cross section of slot is rectangle.Such design, so that being formed close in the expanded joint end outer wall insertion expanded joint annular groove of oil pipe
Connection, can bear biggish hydraulic oil seal pressure requirements.
Preferably, the cross section of the expanded joint annular groove is trapezoidal, the trapezoidal expanded joint annular groove opening
Width is less than bottom width, and the sidewall slope angle of the trapezoidal expanded joint annular groove is 0.5 to 2 degree.Such design, makes
Protrusion in the expanded joint end outer wall insertion expanded joint annular groove of oil pipe is even closer connect with expanded joint annular groove, can be with
Prevent later period loosening.
Preferably, the expanded joint annular groove in be filled with packing material, the packing material be low-melting-point metal,
Alloy, plastics or metal glue bonded assembly.Such design, can protrusion (oil pipe expanded joint end outer wall insertion it is swollen
Connect the protrusion in annular groove) with low-melting-point metal, alloy, plastics or metal glue are formed at the gap of expanded joint annular groove
Filler further increases hydraulic oil seal pressure requirements.
Preferably, metal glue bonded assembly includes external ring packing film and is stored in ring packing film
Metal glue.Padding is convenient in such design.
The advantages and beneficial effects of the present invention are: by the dilating effect of reamer by the expanded joint end of oil pipe and expanded joint hole
It is cooperatively connected, the welding procedure of solderability poor material high-voltage tube and connector can be substituted；It avoids at high-voltage tube welded connecting not
Good hidden danger；Reduce workshop welding pollution；Production efficiency is improved, production cost is reduced.
Detailed description of the invention
Fig. 1 is reamer structural upright schematic diagram of the present invention；
Fig. 2 is reamer structure schematic side view of the present invention；
Fig. 3 is reamer structure axial direction partial schematic sectional view of the present invention；
Fig. 4 is reamer schematic structural cross-sectional view of the present invention；
Fig. 5 is expanded joint end and expanded joint hole mating connection structural schematic diagram (before expanded joint)；
Fig. 6 is counterbored end and expanded joint inner wall of end mating connection structural schematic diagram (before expanded joint)；
Fig. 7 is counterbored end and expanded joint inner wall of end mating connection structural schematic diagram (after expanded joint)；
Fig. 8 is expanded joint end and expanded joint hole mating connection structural schematic diagram (after expanded joint)；
Fig. 9 is protrusion and expanded joint annular groove (rectangle) mating connection structural schematic diagram；
Figure 10 is protrusion and expanded joint annular groove (trapezoidal) mating connection structural schematic diagram；
Figure 11 is the reason in expanded joint annular groove before packing material (low-melting-point metal, alloy, plastics) heating and after heating
Think state effect picture；
Figure 12 is the shape in expanded joint annular groove before packing material (low-melting-point metal, alloy, plastics) heating and after heating
State effect picture (expanded joint end is vertically arranged, and is the different conditions of connector upwardly and downwardly in figure)；
Figure 13 be in expanded joint annular groove before packing material (metal glue bonded assembly) tube expansion with the ideal shape after tube expansion
State effect picture；
Figure 14 is to imitate before packing material (metal glue bonded assembly) tube expansion with the state after tube expansion in expanded joint annular groove
Fruit figure (expanded joint end is vertically arranged, and is the different conditions of connector upwardly and downwardly in figure).
In figure: 1, oil pipe；2, connector；3, expanded joint hole；4, expanded joint annular groove；5, outer tube；6, mandrel；7, roller is empty
Window；8, roller；9, external screw thread；10, depth localization lantern ring；11, cooperation contact ring；12, thrust bearing；13, mandrel cavity；14,
Slide cavity；15, confined planes；16, positive stop lug boss；17, rear end cap；18, rear end cap locking hole；19, swollen hole control ring；20, swollen
Hole control ring locking hole；21, it is drivingly connected end；22, packing material；23, ring packing film；24, metal glue；25, expanded joint
End；26, raised.
Specific embodiment
With reference to the accompanying drawings and examples, further description of the specific embodiments of the present invention.Following embodiment is only
For clearly illustrating technical solution of the present invention, and not intended to limit the protection scope of the present invention.
As shown in Fig. 1 and Figure 14, a kind of hydraulic oil pipe tube expanding joint component is cooperatively connected including oil pipe 1 and with oil pipe 1
Connector 2 offers expanded joint hole 3 on the connector 2, and 3 inner wall of expanded joint hole is provided in the axial direction with expanded joint annular groove 4, described
The expanded joint end 25 and expanded joint hole 3 of oil pipe 1 are cooperatively connected；
It further include reamer, the counterbored end of the reamer and 25 inner wall of expanded joint end of oil pipe 1 are cooperatively connected.
The reamer includes outer tube 5, and the outer tube 5 is internally provided with mandrel 6, and the mandrel 6 has taper, institute
The front end for stating outer tube 5 radially offers multiple roller sky windows 7, is equipped with roller 8, the rolling in the roller sky window 7
Column 8 has taper；The roller 8 is rolled with mandrel 6 to be cooperated；5 outer wall of outer tube is provided with external screw thread 9, the outer tube 5
It is also socketed with depth localization lantern ring 10 outside, the depth localization lantern ring 10 is connect with 5 outer wall thread of outer tube, the depth localization
10 front end of lantern ring is additionally provided with cooperation contact ring 11, and the cooperation contact ring 11 is rotated by thrust bearing 12 and depth localization set
Connection.
It from front to back include mandrel cavity 13 in the outer tube 5, the sliding cavity 14 with the coaxial arrangement of mandrel cavity 13,
The aperture of the sliding cavity 14 is greater than mandrel cavity 13, and the sliding cavity 14 is arranged limited with 13 cohesive position of mandrel cavity
Plane 15, the rear portion of the mandrel 6 are provided with the positive stop lug boss 16 cooperated with confined planes 15.
5 rear end of outer tube is connected with rear end cap 17, and the rear end cap 17 is annular, by screw thread and outer tube 5 outside
Portion connects, and offers rear end cap locking hole 18 on the rear end cap 17；6 rear end of mandrel is connected with swollen hole control ring 19,
The swollen hole control ring 19 is threadedly coupled with 6 rear end of mandrel, and swollen hole control ring locking is provided in the swollen hole control ring 19
Hole 20；When the mandrel 6 slides axially along mandrel cavity 13 and sliding cavity 14, swollen 19 front end of hole control ring and rear end cap
The cooperation limit of 17 rear ends；6 rear end of mandrel passes through the drive that swollen hole control ring 19 is protruding, and formation is connect with driving structure
Dynamic connection end 21
6 taper of mandrel is 1:25~1:50；Mandrel 6 is gradually thicker to the back-end from front end；8 taper of roller and core
6 taper of axis adaptation gradually attenuates in roller 8 from front end to the back-end.
The inclination angle of 1 to 10 degree is additionally provided between the roller 8 and mandrel 6.
3 inner wall of expanded joint hole is provided in the axial direction with multiple expanded joint annular grooves 4, the expanded joint annular groove 4 it is transversal
Face is rectangle.
The cross section of the expanded joint annular groove 4 be it is trapezoidal, trapezoidal 4 opening width of expanded joint annular groove be less than bottom
Portion's width, the sidewall slope angle of the trapezoidal expanded joint annular groove 4 are 0.5 to 2 degree.
Be filled with packing material 22 in the expanded joint annular groove 4, the packing material 22 be low-melting-point metal, alloy,
Plastics or metal glue bonded assembly.
Metal glue bonded assembly includes external ring packing film 23 and the metal-to-metal adhesive that is stored in ring packing film 23
Water 24.
Embodiment 1
A kind of 1 tube expanding joint component of hydraulic oil pipe, including oil pipe 1 and the connector 2 being cooperatively connected with oil pipe 1, the connector 2
On offer expanded joint hole 3,3 inner wall of expanded joint hole is provided in the axial direction with expanded joint annular groove 4, the expanded joint end of the oil pipe 1
25 are cooperatively connected with expanded joint hole 3；
It further include reamer, counterbored end (part that the front end of outer tube 5 has roller 8) and the oil of the reamer
25 inner wall of expanded joint end of pipe 1 is cooperatively connected.
The reamer includes outer tube 5, and the outer tube 5 is internally provided with mandrel 6, and the mandrel 6 has taper, institute
The front end for stating outer tube 5 radially offers multiple roller sky windows 7, is equipped with roller 8, the rolling in the roller sky window 7
Column 8 has taper；The roller 8 is rolled with mandrel 6 to be cooperated；5 outer wall of outer tube is provided with external screw thread 9, the outer tube 5
It is also socketed with depth localization lantern ring 10 outside, the depth localization lantern ring 10 is connect with 5 outer wall thread of outer tube, the depth localization
10 front end of lantern ring is additionally provided with cooperation contact ring 11, and the cooperation contact ring 11 is rotated by thrust bearing 12 and depth localization set
Connection.
It from front to back include mandrel cavity 13 in the outer tube 5, the sliding cavity 14 with the coaxial arrangement of mandrel cavity 13,
The aperture of the sliding cavity 14 is greater than mandrel cavity 13, and the sliding cavity 14 is arranged limited with 13 cohesive position of mandrel cavity
Plane 15, the rear portion of the mandrel 6 are provided with the positive stop lug boss 16 cooperated with confined planes 15.
5 rear end of outer tube is connected with rear end cap 17, and the rear end cap 17 is annular, by screw thread and outer tube 5 outside
Portion connects, and offers rear end cap locking hole 18 on the rear end cap 17；6 rear end of mandrel is connected with swollen hole control ring 19,
The swollen hole control ring 19 is threadedly coupled with 6 rear end of mandrel, and swollen hole control ring locking is provided in the swollen hole control ring 19
Hole 20；When the mandrel 6 slides axially along mandrel cavity 13 and sliding cavity 14, swollen 19 front end of hole control ring and rear end cap
The cooperation limit of 17 rear ends；6 rear end of mandrel passes through the drive that swollen hole control ring 19 is protruding, and formation is connect with driving structure
Dynamic connection end 21.
6 taper of mandrel is 1:25~1:50；Mandrel 6 is gradually thicker to the back-end from front end；8 taper of roller and core
6 taper of axis adaptation gradually attenuates in roller 8 from front end to the back-end.8 taper design of roller is being rolled after rolling with the cooperation of mandrel 6
The track plane that 8 outer rim of column scrolls through is cylinder surface.The width of roller sky window 7 is less than the diameter of roller 8, and roller 8 is limited
In roller sky window 7.
The inclination angle of 1 to 10 degree is additionally provided between the roller 8 and mandrel 6.
3 inner wall of expanded joint hole is provided in the axial direction with multiple expanded joint annular grooves 4, the expanded joint annular groove 4 it is transversal
Face is rectangle.
In expanded joint, need to be processed according to expanding joint process；
Expanded joint end 25 and expanded joint hole 3 are cooperatively connected by the first step using fixture anchor tip 2；
25 inner wall of expanded joint end of second step, the counterbored end of reamer and oil pipe 1 be cooperatively connected (fit clearance 0.15~
0.23mm)；Cooperation contact ring 11 is contacted with the cooperation of 2 end of connector (can be by 10 percentage regulation positioning sleeve of depth localization lantern ring
The position of ring 10 and cooperation contact ring 11 on outer tube 5)；
Third step is drivingly connected end 21 positive turn under the drive of driving mechanism (high torque reaction force electric tool)
It is dynamic, it completes tube expansion operation and (is drivingly connected the rotation band moving mandrel 6 of end 21 to rotate, while being drivingly connected end 21 by forward
Thrust, mandrel 6 is before mandrel cavity 13 and sliding 14 inward turning of cavity turn to, and with the operation of mandrel 6, roller 8 is gradually to roller
It is run on the outside of empty window 7, and cooperates with 25 inner wall of expanded joint end and roll, and gradually compressing expanded joint end 25 expands outward, expanded joint end
25 outer wall of portion is extruded into expanded joint annular groove 4 under the pressure of the bulbs of pressure and forms protrusion 26, and expanded joint end 25 and expanded joint hole 3 cooperate
Expanded joint；In the process, mandrel 6, roller 8, outer tube 5, depth localization lantern ring 10, rear end cap 17, swollen hole control ring 19 are synchronous
Rotation, cooperation contact ring 11 is nonrotational, is relatively rotated by thrust bearing 12 and depth localization lantern ring 10)；
Preferably, when mandrel 6 reaches peak torque 160-180Nm, keeping 2200 degree of rotation when expanding operation
The 4th step is entered back into after turning, the stability of tube expansion can be improved by the pressure maintaining of certain rotational angle.By reasonably adjusting and
Design reaches peak torque when swollen 19 front end of hole control ring and the cooperation limit of 17 rear end of rear end cap.
4th step is drivingly connected end 21 and rotates backward under the drive of driving mechanism, and the counterbored end of reamer exits
25 inner wall of expanded joint end of oil pipe 1.
Embodiment 2
Further have optimization to embodiment 1, the cross section of the expanded joint annular groove 4 be it is trapezoidal, it is described trapezoidal swollen
4 opening width of annular groove is connect less than bottom width, the sidewall slope angle of the trapezoidal expanded joint annular groove 4 is 0.5 to 2
Degree.Such design, protrusion 26 in expanded joint annular groove 4 once being formed after, due to annular groove cross section be it is trapezoidal, it is convex
It plays 26 to be not easy to loosen with annular groove notch in later period use process, connect even closer.
Be filled with packing material 22 in the expanded joint annular groove 4, the packing material 22 be low-melting-point metal, alloy,
Plastics or metal glue bonded assembly.Low-melting-point metal such as tin (231.9 DEG C of fusing point), alloy such as low-melting alloy are
Refer to that fusing point in 300 DEG C of metals and its alloy below, is usually made of the low-melting-point metals element such as Bi, Sn, Pb, In；Plastics example
Such as: pvc plastic molting temperature range is 185~205 DEG C.After tube expansion, expanded joint end 25 is heated, packing material 22 melts
Afterwards by protrusion 26 (protrusion 26 in 25 outer wall of the expanded joint end insertion expanded joint annular groove 4 of oil pipe 1) and expanded joint annular groove 4
Low-melting-point metal, alloy, plastic filler are formed at gap, protrusion 26 is stitched with expanded joint annular groove 4 when further compensating for expanded joint
Loophole between gap further increases hydraulic oil seal pressure tolerance.
Metal glue bonded assembly includes external ring packing film 23 and the metal-to-metal adhesive that is stored in ring packing film 23
Water 24 (metal glue 24 is with a kind of cyanacrylate strong adhesive power glue as main component).
Such design, can be by being sealed in ring packing film 23 temporarily of metal glue 24, in tube expansion, due to convex
Rise 26 pairs of ring packing films 23 extruding so that ring packing film 23 rupture, metal glue 24 flow into protrusion 26 (oil pipe 1 it is swollen
Connect 25 outer wall of end insertion expanded joint annular groove 4 in protrusion 26) with the gap of expanded joint annular groove 4；Further compensate for expanded joint
When protrusion 26 and 4 gap of expanded joint annular groove between loophole, further increase hydraulic oil seal pressure tolerance.
It is preferred that in the first step, by packing material 22 (in a ring, being adapted to expanded joint annular groove 4) filling to expanded joint ring
Inside connected in star 4.
Increase by the 5th step after the 4th step, 200 DEG C to 300 DEG C are heated to expanded joint end 25；It is preferred that by expanded joint end 25
It is vertically arranged.The side gap that packing material 22 after fusing can be concentrated on to protrusion 26 with expanded joint annular groove 4, avoids swollen
It is horizontally disposed to connect end 25, to 4 congregate of expanded joint annular groove, filling effect is uneven.In the heating of the 5th step, using electricity
Perhaps electrical bar heating electromagnetic coil or electrical bar protrude into expanded joint end for magnetosphere heating, and heating time 1 to 10 minute.
Heating is suitable for packing material 22 so that packing material 22 melts as low-melting-point metal, alloy, plastics or metal
The mode of glue bonded assembly, the ring packing film 23 in metal glue bonded assembly can be flexible or hard, such as
Fruit is flexibility, can be by heating so that the thawing of ring packing film 23, metal glue 24 is discharged, 100 DEG C to 300 of heating temperature
℃；
Ring packing film 23 is if hard, due to the extruding of raised 26 pairs of ring packing films 23, so that ring packing film 23
Rupture, metal glue can 24 to flow into protrusion 26 (convex in 25 outer wall of expanded joint end of oil pipe 1 insertion expanded joint annular groove 4
Rise 26) with the gap of expanded joint annular groove 4.
The 1 preferred drawing pipe (redrawing after welding) of hydraulic oil pipe, tube-making process include uncoiling, end shearing and weldering
Connect, loop storing, molding, welding, outer course weldering pearl in removing, drawing, heat treatment, the water pressure test, carrying out flaw detection, printing, coating,
Finished product；The pipe fitting of redrawing is easy to be formed radially layer structure in pipe fitting after welding, easy to form smooth during tube expansion
Surface；Avoid the bad phenomenons such as peeling.
Base material is that Japanese import comes, and is that direct pickling processes are good, and JJP directly carries out welded tube, and welded tube while rejects
Interior outer course welds pearl, subsequently into drawing procedure.The effect of drawing, such as the tolerance of 25.4*3.05, outer diameter tolerance after drawing ±
0.05mm, internal diameter ± 0.1mm, far better than the standard of welded tube.In addition the surface roughness of tubing generally can achieve 50 μ.And
And after drawing in the case that the surface of tubing is not collided with, surface quality is much higher than similar tubing, so imitating in sealing use
Fruit is fine；The preferred drawing pipe of the hydraulic oil pipe 1.
The present invention obtains good effect in practice:
1, the welding procedure of solderability poor material high-voltage tube and connector 2 is substituted；2, it avoids at high-voltage tube welded connecting not
Good hidden danger；3, workshop welding pollution is reduced；4, production efficiency is improved, production cost is reduced.Specific statement are as follows:
A, 1 expanding joint process of high pressure high strength tubing substitute the welding procedure of solderability poor material high-voltage tube and connector 2, both
The cleannes of oil pipe 1 can be improved in the quality of connection that high-pressure oil pipe 1 and connector 2 can be improved again；
B, by importing tube expander convenient, tube expander is axially pushed away to tube expander expanding rod and the unique taper design of roller 8
Power and radial expanded joint power largest optimization distribution, connector 2 and tubing bonding strength and tightness are uniform.And easy to operate, use
Flexibly, forming process is that extruding metal will not generate weld harmful gas and arc light, it is achieved that production high efficiency, product is swollen
High quality is connect, the advantages that production process is pollution-free.
Technical indicator:
A, 1 explosion of high pressure high intensity expanded joint oil pipe test meet 19879 standard of ISO, burst pressure 140MPa；
B, 1 pulse test of high pressure high intensity expanded joint oil pipe meet 19879 standard of ISO, no less than 1,000,000 times；
C, 1 cutting of high pressure high intensity expanded joint oil pipe test meet 1E2634 standard, and trench fill gap is not more than 0.18mm.
Economic indicator:
A, product defect rate reduce by 80%；
B saves 3 high-voltage tube welders；
C, production efficiency improve 50%；
D reduces workshop welding pollution and power consumption.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the technical principles of the invention, several improvements and modifications can also be made, these improvements and modifications
Also it should be regarded as the protection scope of invention.
Claims (8)
1. a kind of hydraulic oil pipe tube expanding joint component, it is characterised in that: described including oil pipe and the connector being cooperatively connected with oil pipe
Expanded joint hole is offered on connector, expanded joint hole inner wall is provided in the axial direction with expanded joint annular groove, the expanded joint end of the oil pipe
It is cooperatively connected with expanded joint hole；
It further include reamer, the counterbored end of the reamer and the expanded joint inner wall of end of oil pipe are cooperatively connected.
2. hydraulic oil pipe tube expanding joint component as described in claim 1, it is characterised in that: the reamer includes outer tube,
The outer tube is internally provided with mandrel, and the mandrel has taper, and the front end of the outer tube radially offers multiple
Roller sky window, roller is equipped in the roller sky window, and the roller has taper；The roller and mandrel, which roll, to be cooperated；Institute
State housing pipe outer wall and be provided with external screw thread, be also socketed with depth localization lantern ring outside the outer tube, the depth localization lantern ring with
The connection of outer tube outer wall thread, depth localization lantern ring front end are additionally provided with cooperation contact ring, and the cooperation contact ring passes through
Thrust bearing and depth localization set are rotatablely connected.
3. hydraulic oil pipe tube expanding joint component as claimed in claim 2, it is characterised in that: wrapped from front to back in the outer tube
Mandrel cavity is included, the aperture of the sliding cavity with the coaxial arrangement of mandrel cavity, the sliding cavity is greater than mandrel cavity, the cunning
Dynamic cavity and mandrel cavity cohesive position are provided with confined planes, and the rear portion of the mandrel is provided with the limit convex with confined planes cooperation
Platform.
4. hydraulic oil pipe tube expanding joint component as claimed in claim 3, it is characterised in that: after the outer tube rear end is connected with
End cap, the rear end cap is annular, and by screw thread and outer tube external connection, rear end cap locking is offered on the rear end cap
Hole；The portion of core back-end is connected with swollen hole control ring, and the swollen hole control ring is threadedly coupled with portion of core back-end, the swollen hole
Swollen hole control ring locking hole is provided in control ring；When the mandrel slides axially along mandrel cavity and sliding cavity, swollen hole
Control ring front end and the cooperation of rear end cap rear end limit；The core back-end pass through swollen hole control ring it is protruding, formed with
The drive connection end of driving structure connection.
5. hydraulic oil pipe tube expanding joint component as claimed in claim 4, it is characterised in that: the mandrel taper is 1:25~1:
50；Mandrel is gradually thicker to the back-end from front end；The roller taper is adapted to mandrel taper, roller from front end to the back-end gradually
Attenuate.
6. hydraulic oil pipe tube expanding joint component as claimed in claim 5, it is characterised in that: also set between the roller and mandrel
It is equipped with the inclination angle of 1 to 10 degree.
7. hydraulic oil pipe tube expanding joint component as claimed in claim 6, it is characterised in that: expanded joint hole inner wall is opened along axial direction
Equipped with multiple expanded joint annular grooves, the cross section of the expanded joint annular groove is rectangle.
8. hydraulic oil pipe tube expanding joint component as claimed in claim 6, it is characterised in that: the expanded joint annular groove it is transversal
Face be it is trapezoidal, the trapezoidal expanded joint annular groove opening width be less than bottom width, the trapezoidal expanded joint annular groove
Sidewall slope angle is 0.5 to 2 degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811373772.4A CN109226542A (en) | 2018-11-19 | 2018-11-19 | A kind of hydraulic oil pipe tube expanding joint component |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811373772.4A CN109226542A (en) | 2018-11-19 | 2018-11-19 | A kind of hydraulic oil pipe tube expanding joint component |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109226542A true CN109226542A (en) | 2019-01-18 |
Family
ID=65075053
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811373772.4A Pending CN109226542A (en) | 2018-11-19 | 2018-11-19 | A kind of hydraulic oil pipe tube expanding joint component |
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| Country | Link |
|---|---|
| CN (1) | CN109226542A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110496911A (en) * | 2019-07-02 | 2019-11-26 | 深圳市合众清洁能源研究院 | A kind of transition structure special process method applied to extraordinary heating element |
| CN116753372A (en) * | 2023-08-21 | 2023-09-15 | 成都飞机工业（集团）有限责任公司 | Shape piping joint and connection method thereof |
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| GB291389A (en) * | 1927-06-01 | 1928-11-22 | Hermann Gradenwitz | Tube-expander for water tubes, smoke tubes and other tubes |
| SU450951A1 (en) * | 1973-01-23 | 1974-11-25 | Ордена Трудового Красного Знамени Центральный Научно-Исследовательский Институт Технологии Судостроения | The method of fixing pipes in the holes of the tube plate of the heat exchanger |
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| CN206786161U (en) * | 2017-06-08 | 2017-12-22 | 廊坊申鹏塑业有限公司 | A kind of plastic conduit attachment means |
| CN207127119U (en) * | 2017-08-14 | 2018-03-23 | 江阴市液压油管有限公司 | High pressure high strength tubing tube expander |
| CN209206289U (en) * | 2018-11-19 | 2019-08-06 | 江阴市液压油管有限公司 | A kind of hydraulic oil pipe tube expanding joint component |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| GB291389A (en) * | 1927-06-01 | 1928-11-22 | Hermann Gradenwitz | Tube-expander for water tubes, smoke tubes and other tubes |
| SU450951A1 (en) * | 1973-01-23 | 1974-11-25 | Ордена Трудового Красного Знамени Центральный Научно-Исследовательский Институт Технологии Судостроения | The method of fixing pipes in the holes of the tube plate of the heat exchanger |
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| CN202660960U (en) * | 2012-06-19 | 2013-01-09 | 茂名重力石化机械制造有限公司 | Tube bundle expanded joint sealing structure |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110496911A (en) * | 2019-07-02 | 2019-11-26 | 深圳市合众清洁能源研究院 | A kind of transition structure special process method applied to extraordinary heating element |
| CN110496911B (en) * | 2019-07-02 | 2021-08-10 | 深圳市合众清洁能源研究院 | Special machining method for transition structure applied to special electric heating element |
| CN116753372A (en) * | 2023-08-21 | 2023-09-15 | 成都飞机工业（集团）有限责任公司 | Shape piping joint and connection method thereof |
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Address after: No. 907, Binjiang West Road, Jiangyin City, Wuxi City, Jiangsu Province Applicant after: Jiangsu Yaokun Hydraulic Co., Ltd Address before: 214400 West Jiangyin Xi village, Lingang street, Jiangyin, Wuxi, Jiangsu Applicant before: JIANGYIN HYDRAULIC OIL TUBE Co.,Ltd. |