CN103157919A - Novel structure and novel welding process of hydraulic oil cylinder inlet-outlet oil port joint - Google Patents
Novel structure and novel welding process of hydraulic oil cylinder inlet-outlet oil port joint Download PDFInfo
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- CN103157919A CN103157919A CN2013100671660A CN201310067166A CN103157919A CN 103157919 A CN103157919 A CN 103157919A CN 2013100671660 A CN2013100671660 A CN 2013100671660A CN 201310067166 A CN201310067166 A CN 201310067166A CN 103157919 A CN103157919 A CN 103157919A
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Abstract
The invention provides a novel structure and a novel welding process of a hydraulic oil cylinder inlet-outlet oil port joint. The original process that machining is conducted after a cylinder body is welded with an inlet-outlet oil port joint in a butt joint mode is changed into the fact that a joint installation hole of the cylinder body, and a step-shaped inlet-outlet oil port joint body matched with the joint installation hole are machined firstly, wherein the upper funnel-shaped portion of the cylinder body is an inner taper hole, and the lower portion of the cylinder body is a thread hole. A position of the joint body, close to the bottom of the flange surface of the thread end of the joint body, is provided with a boss, the diameter of the boss is slightly larger than the full diameter of thread, and the contour of the intersected circle of the boss and a thread relief groove keeps a right angle and complete. When the novel structure is assembled, the joint body is tightly screwed downwards, and after a mechanical seal pair is locked and sealed, the cylinder body and the flange outer circle of the joint body are welded through little welding current and welding joints, wherein the mechanical seal pair is formed by the outer circle right-angle contour, close to the flange surface, of the boss, and the inner taper surface of the cylinder body. According to the novel structure and the novel welding process, functions that the welding joints between the joint body and the cylinder body in the traditional process need to bear seal and tensile strength and fix the joint body are separated, and only the function of fixing the joint body is kept.
Description
One, technical field:
The present invention relates to a kind of new construction and new process of hydraulic jack oil inlet and outlet joint.
Two, background technology:
In the process of mankind's industrial civilization, hydraulic drive and control system are widely used in the transmission of all kinds of mechanized equipments with in controlling.
In the technology of existing hydraulic drive and control, hydraulic jack is exactly at present most widely used a kind of in executive component.Hydraulic jack plays an important role in the development of the mankind's mechanized equipment.
Along with hydraulic technique towards high accuracy, high pressure and high-speed cruising future development, the welding deformation of the oil inlet and outlet of hydraulic jack becomes the difficult problem that people must capture.
In addition, along with the end in expansion epoch of the economic high speed of China market, the hydraulic jack manufacturer in the oil cylinder production and administration, small lot, many kinds and delivery date the short normality that becoming.In the cylinder barrel production process of hydraulic jack,---technical process of welding oil inlet and outlet---stress relieving by annealing---reprocessing is oversize, is difficult to satisfy actual demand in former the sort of blanking.Unfavorable for the productivity ratio that improves cylinder barrel simultaneously.They are badly in need of finding the fine finishining in enormous quantities of a kind of cylinder barrel same specification standby, after receiving order, only need cylinder barrel is cut down by size, just can weld oil inlet and outlet; Or after receiving order, only need cylinder barrel is cut down by size, just weld oil inlet and outlet, need not to carry out the new process that stress relieving by annealing technique just can be carried out accurately machined minimizing hydraulic jack oil inlet and outlet welding deformation.
Three, summary of the invention:
Purpose of the present invention is exactly to develop that a kind of cost is low, simple and reliable, joint new construction and process that can effectively reduce hydraulic jack oil inlet and outlet welding deformation.
The new construction of hydraulic jack oil inlet and outlet joint of the present invention and new welding procedure are: process will cylinder barrel be docked welding in original technique with the oil inlet and outlet joint after, change into: be first that the internal taper hole bottom is that the oil inlet and outlet fittings body of the jiont treatment hole that forms of screwed hole and the stairstepping that matches with it processes with the top of cylinder barrel upper hopper shape, this fittings body has a diameter to be a bit larger tham the boss of major diameter of thread at it bottom the flange face of the end of thread, and the crossing circumference of this boss and Gewindefreistiche keeps right angle and complete.
During assembling, firmly fittings body is tightened downwards, after making the mechanical seal secondary lock tightening seal by the cylindrical right angle circumference of the boss of flange face and the composition of the inner conical surface on cylinder barrel, then weld with less welding current and the weld seam flange excircle with cylinder barrel and fittings body.
The present invention will bear sealing, hot strength and the function of anchor tip body with original technique center tap body and the weld seam between cylinder barrel and separate, and only kept the function of anchor tip body, its sealing is replaced by the sealing pair between fittings body and cylinder barrel, and hot strength is born by the threaded connection pair between fittings body and cylinder body.So the requirement of butt welded seam has just reduced widely, and the size of weld seam can reduce a lot, and the electric current during welding also can be little a lot, thereby has reduced internal stress and the distortion of fittings body and cylinder barrel welding.
Structure of the present invention is that the internal taper hole bottom is the jiont treatment hole of screwed hole by the funnel shaped top on cylinder barrel 1, and an end band is externally threaded, the fittings body 2 that has a diameter to be a bit larger tham the boss of major diameter of thread by the flange face bottom combines.It is characterized in that: the cylindrical right angle circumference composition mechanical seal with the internal taper hole on cylinder barrel 1 and fittings body 2 convex platforms is secondary, only need tighten fittings body 2 in assembling, after sealing pair is combined closely, with less electric current and weld seam, fittings body 2 is welded with cylinder barrel 1 on flange excircle.
The present invention also can adopt and add the metal foil pad between sealing pair, also can be on sealing surface the coating soft metal.
Further the present invention can also adopt the version of spot welding between the flange excircle of cylinder barrel 1 and fittings body 2.
Further can also adopt between the flange of cylinder barrel 1 and fittings body 2 and get out several apertures on flange face, then the version of spot welding in these several apertures;
Further can also adopt the technique of laser weld between the flange excircle faying face of cylinder barrel 1 and fittings body 2; So just more be conducive to reduce welding deformation.
Four, description of drawings:
Accompanying drawing 1 is structure principle chart of the present invention.
Five, the specific embodiment:
The specific embodiment of the present invention is: be first that the internal taper hole bottom is that the oil inlet and outlet fittings body 2 of the installing hole of the fittings body 2 that forms of screwed hole and the stairstepping that matches with it processes with the top of cylinder barrel 1 upper hopper shape, this fittings body 2 has a diameter to be a bit larger tham the boss of major diameter of thread at it bottom the flange face of the end of thread, and the crossing circumference of this boss and Gewindefreistiche keeps right angle and complete.During assembling, firmly fittings body 2 is tightened downwards, after making the mechanical seal secondary lock tightening seal by the cylindrical right angle circumference of the boss of flange face and the composition of the inner conical surface on cylinder barrel 1, then weld with less welding current and the weld seam flange excircle with cylinder barrel 1 and fittings body 2.
Claims (5)
1. the new construction of a hydraulic jack oil inlet and outlet joint and newly welding procedure, that top with cylinder barrel upper hopper shape is that the internal taper hole bottom is that the oil inlet and outlet fittings body of the jiont treatment hole that forms of screwed hole and the stairstepping that matches with it processes, this fittings body has a diameter to be a bit larger tham the boss of major diameter of thread at it bottom the flange face of the end of thread, and the crossing circumference of this boss and Gewindefreistiche keeps right angle and complete.During assembling, firmly fittings body is tightened downwards, after making the mechanical seal secondary lock tightening seal by the cylindrical right angle circumference of the boss of flange face and the composition of the inner conical surface on cylinder barrel, then weld with less welding current and the weld seam flange excircle with cylinder barrel and fittings body; The present invention will bear sealing, hot strength and the function of anchor tip body with original technique center tap body and the weld seam between cylinder barrel and separate, and only kept the function of anchor tip body, its sealing is replaced by the sealing pair between fittings body and cylinder barrel, and hot strength is born by the threaded connection pair between fittings body and cylinder body; So the requirement of butt welded seam has just reduced widely, and the size of weld seam can reduce a lot, and the electric current during welding also can be little a lot, thereby has reduced internal stress and the distortion of fittings body and cylinder barrel welding; Structure of the present invention is that the internal taper hole bottom is the jiont treatment hole of screwed hole by the funnel shaped top on cylinder barrel (1), and an end band is externally threaded, have a diameter to be a bit larger tham the fittings body of the boss of major diameter of thread (2) by the flange face bottom combines; It is characterized in that: the cylindrical right angle circumference composition mechanical seal with the internal taper hole on cylinder barrel (1) and fittings body (2) convex platform is secondary, only need tighten fittings body (2) in assembling, after sealing pair is combined closely, with less electric current and weld seam, fittings body (2) is welded with cylinder barrel (1) on flange excircle.
2. the new construction of a kind of hydraulic jack oil inlet and outlet joint according to claim 1 and new welding procedure, is characterized in that: adopt laser welding process between the flange faying face of cylinder barrel (1) and fittings body (2).
3. the new construction of a kind of hydraulic jack oil inlet and outlet joint according to claim 1 and new welding procedure, is characterized in that: add the metal foil pad between the sealing surface of cylinder barrel (1) and fittings body (2).
4. the new construction of a kind of hydraulic jack oil inlet and outlet joint according to claim 1 and new welding procedure, is characterized in that: coating soft metal on the sealing surface of cylinder barrel (1) and fittings body (2).
5. the new construction of a kind of hydraulic jack oil inlet and outlet joint according to claim 1 and new welding procedure is characterized in that: bore several apertures on the flange face of fittings body (2), the welding procedure of spot welding in the hole again after fittings body (2) is tightened.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100671660A CN103157919A (en) | 2013-03-04 | 2013-03-04 | Novel structure and novel welding process of hydraulic oil cylinder inlet-outlet oil port joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100671660A CN103157919A (en) | 2013-03-04 | 2013-03-04 | Novel structure and novel welding process of hydraulic oil cylinder inlet-outlet oil port joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103157919A true CN103157919A (en) | 2013-06-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013100671660A Pending CN103157919A (en) | 2013-03-04 | 2013-03-04 | Novel structure and novel welding process of hydraulic oil cylinder inlet-outlet oil port joint |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104084771A (en) * | 2014-07-06 | 2014-10-08 | 山西汾西重工有限责任公司 | Destressing warhead-curve-shaped aluminum alloy thin-walled cylinder and machining process of destressing warhead-curve-shaped aluminum alloy thin-walled cylinder |
| CN109317809A (en) * | 2018-11-16 | 2019-02-12 | 航天材料及工艺研究所 | A kind of Aluminum alloys tank minor-diameter nozzle welding method |
| CN110184860A (en) * | 2018-02-23 | 2019-08-30 | 洛阳科博思新材料科技有限公司 | The double-deck track switch Damping fastening lower bolster and its manufacturing method |
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|---|---|---|---|---|
| US5056704A (en) * | 1988-02-22 | 1991-10-15 | Tube Forming, Inc. | Tube fitting having a saddle bead with conforming pilot |
| DE10344951A1 (en) * | 2003-09-27 | 2005-07-14 | Zf Friedrichshafen Ag | Joint eye for a piston/cylinder unit comprises an outer sleeve provided with a through opening into which a disk with a fixing thread is inserted |
| CN101090794A (en) * | 2004-10-29 | 2007-12-19 | 奇林德罗斯克罗马多斯帕伦蒂诺斯公司 | Laser welding method for hydraulic cylinders |
| CN101954536A (en) * | 2010-10-29 | 2011-01-26 | 成都四威高科技产业园有限公司 | Method for welding minor-diameter nozzle and aluminum alloy thin-walled structure |
| CN202469299U (en) * | 2012-02-27 | 2012-10-03 | 江苏勇龙电气有限公司 | Extra high voltage electrode flange |
| CN102900864A (en) * | 2012-10-31 | 2013-01-30 | 替克斯阀门有限公司 | Pipeline ball valve and manufacturing method thereof |
-
2013
- 2013-03-04 CN CN2013100671660A patent/CN103157919A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5056704A (en) * | 1988-02-22 | 1991-10-15 | Tube Forming, Inc. | Tube fitting having a saddle bead with conforming pilot |
| DE10344951A1 (en) * | 2003-09-27 | 2005-07-14 | Zf Friedrichshafen Ag | Joint eye for a piston/cylinder unit comprises an outer sleeve provided with a through opening into which a disk with a fixing thread is inserted |
| CN101090794A (en) * | 2004-10-29 | 2007-12-19 | 奇林德罗斯克罗马多斯帕伦蒂诺斯公司 | Laser welding method for hydraulic cylinders |
| CN101954536A (en) * | 2010-10-29 | 2011-01-26 | 成都四威高科技产业园有限公司 | Method for welding minor-diameter nozzle and aluminum alloy thin-walled structure |
| CN202469299U (en) * | 2012-02-27 | 2012-10-03 | 江苏勇龙电气有限公司 | Extra high voltage electrode flange |
| CN102900864A (en) * | 2012-10-31 | 2013-01-30 | 替克斯阀门有限公司 | Pipeline ball valve and manufacturing method thereof |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104084771A (en) * | 2014-07-06 | 2014-10-08 | 山西汾西重工有限责任公司 | Destressing warhead-curve-shaped aluminum alloy thin-walled cylinder and machining process of destressing warhead-curve-shaped aluminum alloy thin-walled cylinder |
| CN104084771B (en) * | 2014-07-06 | 2016-04-06 | 山西汾西重工有限责任公司 | The processing technology of the aluminium alloy thin-walled cylinder of destressing bullet curve shape |
| CN110184860A (en) * | 2018-02-23 | 2019-08-30 | 洛阳科博思新材料科技有限公司 | The double-deck track switch Damping fastening lower bolster and its manufacturing method |
| CN110184860B (en) * | 2018-02-23 | 2021-03-19 | 洛阳科博思新材料科技有限公司 | Double-layer turnout vibration-damping fastener lower base plate and manufacturing method thereof |
| CN109317809A (en) * | 2018-11-16 | 2019-02-12 | 航天材料及工艺研究所 | A kind of Aluminum alloys tank minor-diameter nozzle welding method |
| CN109317809B (en) * | 2018-11-16 | 2021-02-09 | 航天材料及工艺研究所 | Welding method for small-diameter pipe nozzle of aluminum alloy storage tank |
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Application publication date: 20130619 |