CN202851521U - Hydraulic cylinder bottom welding joint stress balance structure - Google Patents
Hydraulic cylinder bottom welding joint stress balance structure Download PDFInfo
- Publication number
- CN202851521U CN202851521U CN 201220527377 CN201220527377U CN202851521U CN 202851521 U CN202851521 U CN 202851521U CN 201220527377 CN201220527377 CN 201220527377 CN 201220527377 U CN201220527377 U CN 201220527377U CN 202851521 U CN202851521 U CN 202851521U
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- cylinder bottom
- cylinder
- welding
- sides
- hydraulic cylinder
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Abstract
The utility model discloses a hydraulic cylinder bottom welding joint stress balance structure, and belongs to the field of hydraulic cylinders. The hydraulic cylinder bottom welding joint stress balance structure comprises a cylinder barrel body, a cylinder bottom and welding joints; and the cylinder barrel body and inner holes of the cylinder bottom welding end are connected together through a locating sleeve to enable the two sides of the welding joints to be in a completely symmetrical structure. The hydraulic cylinder bottom welding joint stress balance structure has the advantages that due to the fact that cylinder bottom seam allowances and cylinder barrel body inner holes are in the same size, a completely symmetrical state of the two sides of the welding joints are guaranteed, under the condition that the inner holes bear high pressure, the outer wall of the hydraulic cylinder is in the same deformation state, the received stresses are the same, the stresses of the two sides of the welding joints are in a balanced state, and the welding joint fracture cause by the uneven stress of the two sides of the welding joints is avoided; and due to the fact that cylinder bottom blanks are all forgings and high in cost, and the locating sleeve is adopted to reduce the length of the cylinder bottom and is manufactured without adopting seamless tubes, and therefore the cost is reduced.
Description
Technical field
The utility model relates to a kind of oil hydraulic cylinder weld seam form, and specifically a kind of cylinder bottoms of hydraulic cylinders weld stress equilibrium structure is used for realizing cylinder bottoms of hydraulic cylinders weld seam both sides stress equilibrium, avoids weld cracking.
Background technique
The cylinder bottoms of hydraulic cylinders Type of Welding as shown in Figure 1 at present, basic 2 part form of cylinder bottom+cylinder barrel that adopt, by processing excircles seam on cylinder bottom, edge is in the cylinder barrel endoporus, cylinder bottom adopts flat cylinder bottom or cylinder bottom stop portion wall thickness greater than the cylinder barrel wall thickness, cause the wall thickness of cylinder bottom weld seam both sides that clearly difference is arranged, like this in the situation that high pressure is born in oil hydraulic cylinder inside, cylinder bottom weld seam both sides amount of deformation is different, the suffered stress in weld seam both sides has very big-difference, cause in use cylinder bottom weld cracking of oil hydraulic cylinder, this phenomenon is particularly outstanding in the high pressure liquid cylinder pressure, thereby has influence on the operational safety of oil hydraulic cylinder.
Summary of the invention
For the stress distribution inequality that solves existing cylinder bottoms of hydraulic cylinders welding line structure existence causes problem of Cracking, the utility model provides a kind of cylinder bottoms of hydraulic cylinders weld stress equilibrium structure.
The utility model is realized with following technological scheme: a kind of cylinder bottoms of hydraulic cylinders weld stress equilibrium structure comprises cylinder barrel, cylinder bottom, weld seam; The endoporus of cylinder barrel and cylinder bottom welding ends links together, makes the weld seam both sides to be in the full symmetric structure by setting sleeve.
Because the effect of connecting sleeve, cylinder bottom seam, cylinder barrel endoporus are same size, make the wall thickness of weld seam both sides keep the same, in the situation that endoporus bears high pressure, the oil hydraulic cylinder outer wall is under the same deformation state, suffered stress remains on same size, and weld seam two lateral stresses are in state of equilibrium, avoids the weld seam both sides because suffered unbalanced stress causes weld cracking.
The beneficial effects of the utility model are: since cylinder bottom to be the forging cost high owing to adopting setting sleeve to reduce the length of cylinder bottom, setting sleeve adopts weldless tube processing, thereby has reduced cost of production.
Description of drawings
Fig. 1 is former oil hydraulic cylinder cylinder bottom welding line structure schematic diagram.
Fig. 2 is the utility model cylinder bottoms of hydraulic cylinders stress equilibrium structural representation.
Among the figure: 1, cylinder barrel, 2, setting sleeve, 3, cylinder bottom, 4, weld seam.
Embodiment
Below in conjunction with accompanying drawing 2 and embodiment structure of the present utility model is further specified.
As shown in Figure 2, cylinder bottoms of hydraulic cylinders weld stress equilibrium structure comprises cylinder barrel 1, cylinder bottom 3 and weld seam 4, and the endoporus of cylinder barrel 1 and cylinder bottom 3 welding endss links together, makes weld seam 4 both sides to be in the full symmetric structure by setting sleeve 2.Concrete operation method is: setting sleeve 2 is connected cylinder barrel 2 and cylinder bottom 3, by setting sleeve two ends cylindrical seam, cylinder barrel endoporus, cylinder bottom endoporus seam, 3 parts are combined, weld.By adopting setting sleeve 3 to connect cylinder barrel 1, cylinder bottom 2, making cylinder barrel endoporus, cylinder bottom seam is same size, so that the wall thickness of cylinder bottom weld seam 4 both sides keeps the same, in the situation that endoporus bears high pressure, the oil hydraulic cylinder outer wall is under the same deformation state, suffered stress remains on same size, and weld seam two lateral stresses are in state of equilibrium, thereby avoids the weld seam both sides because suffered unbalanced stress causes weld cracking; Because present cylinder bottom blank is forging, cost is high simultaneously; By adopting setting sleeve to reduce the length of cylinder bottom, setting sleeve adopts weldless tube processing, thereby has reduced cost of production.
Claims (1)
1. cylinder bottoms of hydraulic cylinders weld stress equilibrium structure, comprise cylinder barrel (1), cylinder bottom (3), weld seam (4) is characterized in that: the endoporus of cylinder barrel (1) and cylinder bottom (3) welding ends links together, makes the weld seam both sides to be in the full symmetric structure by setting sleeve (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220527377 CN202851521U (en) | 2012-10-16 | 2012-10-16 | Hydraulic cylinder bottom welding joint stress balance structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220527377 CN202851521U (en) | 2012-10-16 | 2012-10-16 | Hydraulic cylinder bottom welding joint stress balance structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202851521U true CN202851521U (en) | 2013-04-03 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220527377 Expired - Lifetime CN202851521U (en) | 2012-10-16 | 2012-10-16 | Hydraulic cylinder bottom welding joint stress balance structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202851521U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103769720A (en) * | 2013-12-28 | 2014-05-07 | 柳州市江航工贸有限公司 | Welding structure for circular seam welding |
| CN106583953A (en) * | 2017-01-17 | 2017-04-26 | 临沂金利液压科技有限公司 | Novel cylinder barrel flange welding process |
-
2012
- 2012-10-16 CN CN 201220527377 patent/CN202851521U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103769720A (en) * | 2013-12-28 | 2014-05-07 | 柳州市江航工贸有限公司 | Welding structure for circular seam welding |
| CN106583953A (en) * | 2017-01-17 | 2017-04-26 | 临沂金利液压科技有限公司 | Novel cylinder barrel flange welding process |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130403 |
|
| CX01 | Expiry of patent term |