CN203065049U - Cold-bending square tube for standard joint of tower crane - Google Patents
Cold-bending square tube for standard joint of tower crane Download PDFInfo
- Publication number
- CN203065049U CN203065049U CN 201320031054 CN201320031054U CN203065049U CN 203065049 U CN203065049 U CN 203065049U CN 201320031054 CN201320031054 CN 201320031054 CN 201320031054 U CN201320031054 U CN 201320031054U CN 203065049 U CN203065049 U CN 203065049U
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- square tube
- cold
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- tube
- bending
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Abstract
The utility model discloses a cold-bending square tube for a standard joint of a tower crane, which is used for solving the technical problem of small sectional inertial moment of the existing cold-bending square tube. The cold-bending square tube comprises a whole stainless steel plate which is cold-bent into the shape of a hollow square, high-frequency weld joints (5) are arranged at butt joint interfaces of the stainless steel plate, four angles of a tube wall outer profile (1) with a hollow square-shaped section are outer circular arcs (2), the radius of the outer circular arcs (2) is 24mm, the four angles of a tube wall inner hole (3) with a hollow square-shaped section are inner circular arcs (4), and the radius of the inner circular arcs (4) is 12mm. The cold-bending square tube disclosed by the utility model can be widely applied in the aspects of tower cranes, process steel structures and the like, the product variety of the cold-bending square tube is increased, and the range of application of the cold-bending square and rectangular tube is expanded.
Description
Technical field
The utility model relates to a kind of square tube, particularly a kind of square tube of saving with standard on the tower machine of cold bending process production.
Background technology
Existing tower machine generally is to be welded into square tube with hot-rolled steel channel or angle steel to being connected into square shape with square tube, exists the intensity of square tube low, the big and uneconomic problem of weight.Existing product also has some square tubes made from the clod wash method, but these square tube flakiness ratios are bigger, cross sectional moment of inertia is little, the cross section performance is limited, but a lot of industry requirements increase cross sectional moment of inertia not increasing under the oad situation, therefore need under the constant substantially situation of profile, increase steel pipe thickness, with the enlarging section moment of inertia.
Summary of the invention
The utility model provides a kind of tower machine standard knot clod wash square tube, has solved the little technical matters of existing clod wash square tube cross sectional moment of inertia.
The utility model overcomes the above problems by following scheme:
A kind of tower machine standard knot clod wash square tube, comprise that the monoblock clod wash becomes three-back-shaped stainless steel sheet, mating interface place at stainless steel sheet is provided with the dielectric bonding weld seam, section is that four angles of three-back-shaped tube wall outline are external arc, the radius of external arc is 24 millimeters, section is that four angles of three-back-shaped tube wall endoporus are interior circular arc, and the radius of interior circular arc is 12 millimeters.
The width of square tube is 135 millimeters, and the thickness of square tube is 10 millimeters.
The width of square tube is 135 millimeters, and the thickness of square tube is 12 millimeters.
But aspects such as the utility model widespread use and tower crane, technology steel structure have increased the product variety of clod wash square tube, have widened the range of use of cold-bending square and rectangular pipe.
Description of drawings
Fig. 1 is structural representation of the present utility model.
The specific embodiment
A kind of tower machine standard knot clod wash square tube, comprise that the monoblock clod wash becomes three-back-shaped stainless steel sheet, mating interface place at stainless steel sheet is provided with dielectric bonding weld seam 5, section is that four angles of three-back-shaped tube wall outline 1 are external arc 2, the radius of external arc 2 is 24 millimeters, section is circular arc 4 in four angles of three-back-shaped tube wall endoporus 3 are, and the radius of interior circular arc 4 is 12 millimeters.
The width of square tube is 135 millimeters, and the thickness of square tube is 10 millimeters.
The width of square tube is 135 millimeters, and the thickness of square tube is 12 millimeters.
The width of square tube is 135 millimeters, and the thickness of square tube is 14 millimeters.
The utility model adopts the continuous roll bending formation technology of clod wash welded tube unit, dielectric bonding, online sawing production technology.
Claims (3)
1. tower machine standard knot clod wash square tube, comprise that the monoblock clod wash becomes three-back-shaped stainless steel sheet, be provided with dielectric bonding weld seam (5) at the mating interface place of stainless steel sheet, it is characterized in that, section is that four angles of three-back-shaped tube wall outline (1) are external arc (2), the radius of external arc (2) is 24 millimeters, and section is that four angles of three-back-shaped tube wall endoporus (3) are interior circular arc (4), and the radius of interior circular arc (4) is 12 millimeters.
2. a kind of tower machine tower machine standard knot clod wash square tube according to claim 1 is characterized in that the width of square tube is 135 millimeters, and the thickness of square tube is 10 millimeters.
3. a kind of tower machine tower machine standard knot clod wash square tube according to claim 1 is characterized in that the width of square tube is 135 millimeters, and the thickness of square tube is 12 millimeters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320031054 CN203065049U (en) | 2013-01-14 | 2013-01-14 | Cold-bending square tube for standard joint of tower crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320031054 CN203065049U (en) | 2013-01-14 | 2013-01-14 | Cold-bending square tube for standard joint of tower crane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203065049U true CN203065049U (en) | 2013-07-17 |
Family
ID=48763864
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320031054 Expired - Lifetime CN203065049U (en) | 2013-01-14 | 2013-01-14 | Cold-bending square tube for standard joint of tower crane |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203065049U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103861889A (en) * | 2014-03-13 | 2014-06-18 | 中联重科股份有限公司 | Tower crane, standard knot, diagonal brace rod square tube and closing-up forming method of end part of diagonal brace rod square tube |
-
2013
- 2013-01-14 CN CN 201320031054 patent/CN203065049U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103861889A (en) * | 2014-03-13 | 2014-06-18 | 中联重科股份有限公司 | Tower crane, standard knot, diagonal brace rod square tube and closing-up forming method of end part of diagonal brace rod square tube |
| CN103861889B (en) * | 2014-03-13 | 2016-02-03 | 中联重科股份有限公司 | Tower crane, standard knot, diagonal brace rod square tube and closing-up forming method of end part of diagonal brace rod square tube |
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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: 20130717 |
|
| CX01 | Expiry of patent term |