CN203227935U - Novel structure for reducing welding deformation of oil inlet/outlet of hydraulic cylinder - Google Patents
Novel structure for reducing welding deformation of oil inlet/outlet of hydraulic cylinder Download PDFInfo
- Publication number
- CN203227935U CN203227935U CN 201320096347 CN201320096347U CN203227935U CN 203227935 U CN203227935 U CN 203227935U CN 201320096347 CN201320096347 CN 201320096347 CN 201320096347 U CN201320096347 U CN 201320096347U CN 203227935 U CN203227935 U CN 203227935U
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- cylinder barrel
- outlet
- oil inlet
- joint
- fittings body
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Abstract
Disclosed is a novel structure for reducing welding deformation of an oil inlet/outlet of a hydraulic cylinder. Firstly, a threaded inner hole of an oil inlet/outlet arranged on a cylinder barrel 1, a counter bore and a perpendicular plane are machined, the counter bore is formed in the upper portion of the threaded hole, slightly larger than the thread bottom diameter and 2mm in depth, the perpendicular plane is arranged on the surface of the cylinder barrel and intersects with the surface of the cylinder barrel, and the completeness of the sharp corner of the intersecting line of the perpendicular intersection plane between the counter bore and the cylinder barrel 1 is guaranteed; a flange is arranged in the middle of a joint 2, a thread is formed at one end of the joint 2, a cylinder is arranged at the other end of the joint 2, and the portion where the bottom surface of the flange and the thread of the joint are intersected is machined into a cone in a structural mode of a tool withdrawal groove; during assembly, the joint 2 of the oil inlet/outlet is tightly screwed on the cylinder barrel 1, the cone of the joint 2 and the circumference of the counter bore of the cylinder barrel are ensured to be closely combined and sealed, then, the flange and the cylinder barrel 1 are welded, so that the welding joint in the novel structure only bears the function of fixing the joint 2, while the tensile strength is born by the thread between the cylinder barrel 1 and the joint 2, and welding internal stress and deformation of the joint 2 and the cylinder barrel 1 are reduced.
Description
One, technical field:
The present invention relates to a kind of new construction that reduces hydraulic jack oil inlet and outlet welding deformation.
Two, background technology:
In the process of human industrial civilization, hydraulic drive and control system have obtained using widely in the transmission of all kinds of mechanized equipments and control.
In the technology of existing hydraulic drive and control, hydraulic jack is exactly at present most widely used a kind of in the 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 direction develop, 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 China market end in economic high speed expansion epoch, the hydraulic jack manufacturer is in oil cylinder production and management, and small lot, many kinds and delivery date lack is becoming normality.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 technology 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 a kind of cost new construction low, simple and reliable, that can reduce hydraulic jack oil inlet and outlet welding deformation effectively.
The new construction of minimizing hydraulic jack oil inlet and outlet welding deformation of the present invention, be will be in original technology, must earlier cylinder barrel be docked welding back--annealing--processing with the oil inlet and outlet fittings body, change into earlier that the enterprising fuel-displaced threaded interior hole of cylinder barrel and threaded interior hole top is slightly bigger than the core diameter of thread, counterbore about degree of depth 2mm, and the vertical plane that intersect with it on the cylinder barrel surface processes, the diameter on this plane than the big 10mm of counter bore hole diameters about, need to guarantee that the intersect vertically wedge angle of intersecting lens on plane of counterbore and cylinder barrel is intact; Be a flange in the middle of the fittings body, an end is the external screw thread that matches with cylinder barrel oil inlet and outlet screw thread, and an end is cylinder, and a cone is processed into the version of escape in the bottom surface of flange and fittings body screw thread intersection area.
During assembling, the oil inlet and outlet fittings body is tightened on the cylinder barrel, the sealing of combining closely of the circumference of guaranteeing fittings body cone and counterbore is welded flange and cylinder barrel then.Like this, formed a mechanical seal pair by the cone that counterbore on the cylinder barrel and cylinder barrel intersect vertically on Plane intersects line and the fittings body, the internal thread of the external screw thread of fittings body and cylinder barrel oil inlet and outlet has been formed auxiliary connection, and weld seam then only plays the booster action that is connected of anchor tip body and fraction.
New method will be born sealing, hot strength and the function of anchor tip body with original technology center tap body and the weld seam between cylinder barrel and separates, and has only kept the function of anchor tip body, and its hot strength is then by the threads carry between cylinder barrel and joint.So the requirement of butt welded seam has just reduced widely, and the size of weld seam can reduce, and the electric current during welding also can be little a lot, thereby has reduced internal stress and the distortion of joint and cylinder barrel welding.
Structure of the present invention is combined by the internal thread hole on the cylinder barrel 1 and the one section externally threaded fittings body 2 of being with that matches with it.It is characterized in that: on the cylinder barrel 1 top of the threaded interior hole of oil inlet and outlet have one more slightly bigger than the core diameter of thread, the degree of depth is the counterbore about 2mm; It is with it a vertical plane that counterbore and cylinder surface intersect, the diameter on this plane than the big 10mm of counter bore hole diameters about, counterbore need remain intact with the wedge angle of the Plane intersects line that intersects vertically; Be a flange in the middle of the fittings body 2, one end is the external screw thread that matches with cylinder barrel 1 oil inlet and outlet screw thread, the other end is cylinder, a cone is processed into the version of escape in the bottom surface of flange and joint screw thread intersection area, like this, formed a mechanical wires sealing pair by intersect vertically intersecting lens and the cone on the fittings body 2 on plane of counterbore on the cylinder barrel 1 and cylinder barrel 1, internal thread and the external screw thread on the fittings body 2 with oil inlet and outlet on the cylinder barrel 1 are the installation auxiliary connection of oil inlet and outlet fittings body 2, mechanical stretching stress when having born the work of most oil cylinders by this screw thread pair, weld seam then only need be born the fixedly requirement of 2 of cylinder barrel 1 and oil inlet and outlet fittings bodies.
The present invention also can adopt the version of the conical surface or flat seal, and the sealing of employing face the time can add metal foil pad or seal between sealing surface, also can be on sealing surface the coating soft metal.
The present invention also can adopt the mating surface at the lower plane of fittings body 2 flanges and cylinder barrel 1 to be coated with metal binding agent to fix fittings body 2, so just can fundamentally eliminate the welding deformation of oil inlet and outlet.
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: earlier with the counterbore on the threaded interior hole of oil inlet and outlet on the cylinder barrel 1, threaded interior hole top, with the crossing plane of counterbore with wear one section externally threaded oil inlet and outlet fittings body 2 with it mutually and process, again oil inlet and outlet fittings body 2 is tightened on the cylinder barrel 1, the sealing of combining closely of the circumference of guaranteeing the counterbore of cone on the fittings body 2 and cylinder barrel 1, then, the flange cylindrical of fittings body 2 and the joint portion of cylinder barrel 1 are welded with less current and weld seam.
Claims (1)
1. new construction that reduces hydraulic jack oil inlet and outlet welding deformation, its structure is combined by the internal thread hole on the cylinder barrel (1) and the one section externally threaded fittings body (2) of being with that matches with it; It is characterized in that: the top that cylinder barrel (1) is gone up the threaded interior hole of oil inlet and outlet has a diameter more slightly bigger than the core diameter of thread, and the degree of depth is the counterbore about 2mm; Intersect on counterbore and cylinder barrel (1) surface is a vertical plane with it, the diameter on this plane than the big 10mm of counter bore hole diameters about, counterbore remains intact with the wedge angle of the Plane intersects line that intersects vertically; Be a flange in the middle of the fittings body (2), one end is the external screw thread that matches with cylinder barrel (1) oil inlet and outlet screw thread, the other end is cylinder, a cone is processed into the version of escape in the bottom surface of flange and joint screw thread intersection area, like this, go up the intersect vertically intersecting lens on plane and the cone on the fittings body (2) of counterbore and cylinder barrel (1) by cylinder barrel (1) and formed a mechanical wires sealing pair, internal thread and the external screw thread on the fittings body (2) of going up oil inlet and outlet with cylinder barrel (1) are the installation auxiliary connection of oil inlet and outlet fittings body (2), mechanical stretching stress when having born the work of most oil cylinders by this screw thread pair, weld seam then only need be born the fixedly requirement between cylinder barrel (1) and oil inlet and outlet fittings body (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320096347 CN203227935U (en) | 2013-03-04 | 2013-03-04 | Novel structure for reducing welding deformation of oil inlet/outlet of hydraulic cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320096347 CN203227935U (en) | 2013-03-04 | 2013-03-04 | Novel structure for reducing welding deformation of oil inlet/outlet of hydraulic cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203227935U true CN203227935U (en) | 2013-10-09 |
Family
ID=49284084
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320096347 Expired - Fee Related CN203227935U (en) | 2013-03-04 | 2013-03-04 | Novel structure for reducing welding deformation of oil inlet/outlet of hydraulic cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203227935U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103769758A (en) * | 2013-12-31 | 2014-05-07 | 宁波锦海模具塑膠有限公司 | Fusion welding process for cylinder body or piston rod of oil cylinder |
| CN110560989A (en) * | 2019-07-25 | 2019-12-13 | 武汉船用机械有限责任公司 | welding tool and welding method for cylinder body part |
-
2013
- 2013-03-04 CN CN 201320096347 patent/CN203227935U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103769758A (en) * | 2013-12-31 | 2014-05-07 | 宁波锦海模具塑膠有限公司 | Fusion welding process for cylinder body or piston rod of oil cylinder |
| CN103769758B (en) * | 2013-12-31 | 2015-12-30 | 宁波锦海模具塑膠有限公司 | The fusion welds technique of a kind of cylinder block or piston rod |
| CN110560989A (en) * | 2019-07-25 | 2019-12-13 | 武汉船用机械有限责任公司 | welding tool and welding method for cylinder body part |
| CN110560989B (en) * | 2019-07-25 | 2021-09-07 | 武汉船用机械有限责任公司 | Welding tool and welding method for cylinder body part |
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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 |
Granted publication date: 20131009 Termination date: 20140304 |