CN202785301U - Main beam of crane - Google Patents
Main beam of crane Download PDFInfo
- Publication number
- CN202785301U CN202785301U CN 201220241460 CN201220241460U CN202785301U CN 202785301 U CN202785301 U CN 202785301U CN 201220241460 CN201220241460 CN 201220241460 CN 201220241460 U CN201220241460 U CN 201220241460U CN 202785301 U CN202785301 U CN 202785301U
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- CN
- China
- Prior art keywords
- main beam
- crane
- girder
- welding
- fixed
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Carriers, Traveling Bodies, And Overhead Traveling Cranes (AREA)
Abstract
The utility model discloses a main beam of a crane. The main beam of the crane comprises a main beam; support pedestals are fixed at the two ends of the lower part of the main beam which is in the form of a rectangular pipe; a pulling rod passes through the middle of the support pedestals at the two ends of the main beam and is fixed by tensioning nuts; the rectangular pipe is subjected to one-time parabolic formation through an arch raising machine; the support pedestals fixed to the two ends of the main beam in the form of the rectangular pipe are connected by high-strength hinging bolts; the pulling rod can be a pull cable; and a sheet steel shield as wide as the main beam is arranged at the lower part of the main beam. The main beam of the crane has the effects that the deformation in welding is alleviated, nearly no welding stress is generated, and a plurality of problems such as the gradual drooping of camber of the conventional main beam caused by the release of welding stress can be solved; the crane is about 15% to 20% lighter than the conventional crane, and therefore, the initial investment of a user is reduced; little wheel pressure is generated, thereby prolonging the service life of a factory building and reducing the construction cost of a workshop, saving lots of welding materials such as welding rods and welding flux, alleviating industrial pollution, and reducing labor and manufacturing costs.
Description
Technical field:
The utility model relates to a kind of girder, is specially adapted to use on the hoisting crane.
Background technology:
Girder on the existing hoisting crane, most of product also rests on the conventional Combination Welding box type construction, and its shortcoming is: weld seam is many, work capacity is large, main beam of single-beam crane adopts the U-shaped groove of roll forming for another example, and inside adds the weldering gusset, burn-ons as the I-beam section mill train of cucurbit operation again.Known double girder crane girder adopts upper and lower cover plates and two webs splicings for another example, the said equipment is medium-term and long-term use after camber can nature under around, be prone to cart and gnaw rail, dolly " climbing ", " slide car " etc., easily have an accident, jeopardize safety.
Summary of the invention:
Task of the present utility model is that a kind of technique of proposition is simple, reduces welding deformation, has reduced a kind of crane girder of manual manufacture cost.Task of the present utility model is done in such a way that it comprises girder, is characterized in that: the two ends, girder bottom of rectangular tube are fixed with support plinth, and pull bar penetrates the centre of girder two supports base and fixes with tensioning nut.Described rectangular tube is through a parabola moulding of arch springing machine, and the fixing bearing support in described rectangular tube girder two ends is to adopt the high strength articulation bolt to connect.Described pull bar also can adopt drag-line, and be equipped with girder with wide sheet steel cover the bottom of described girder.The utlity model has following effect: reduced welding deformation, almost do not had welding stress, solved conventional girder and discharged a gradually sagging various difficult problem of camber because of welding stress; This hoisting crane is from the conventional light about 15-20% of anharmonic ratio, solved user's initial investment, and wheel load is little, is conducive to prolong the laid down cost in factory building tenure of use and workshop, saved a large amount of welding materials such as welding rod solder flux, reduced industrial pollution, reduced the manual manufacture cost.
Description of drawings:
Fig. 1 is structural representation of the present utility model.
The specific embodiment:
Describe embodiment in detail in conjunction with above accompanying drawing, the two ends of girder 4 bottoms are fixed with bearing support 1, and pull bar 3 penetrates the middle of bearing support at girder two ends and fixes with tensioning nut 2.Best embodiment is: girder adopts rectangular tube to make; rectangular tube is cut into the length that needs by girder span length; rectangular tube once becomes parabolic type through arch springing machine; the camber size is pressed national standard between (0.9-1.4) S/1000; the support plinth of girder two ends welding is to connect with the high strength articulation bolt; pull bar penetrates the centre of support plinth; with special-purpose torque spanner enlarging moment gradually in order; pull bar also can substitute with drag-line; adjust the primary stress of every prestressed draw-bar; make it stressed evenly etc.; under eccentric pulling force effect, just produce a larger eccentric moment; the flexural deformation that forces girder to keep up; attractive in appearance for protecting; have with girder with wide sheet steel cover in the bottom of girder; from the appearance do not go out to have pull bar; running trolley adopts upper striding type to ride on the girder track; effectively improved hoisting depth; if girder has camber sagging after using for many years; the tensioning nut of the tight end of desirable lower steel plate cover gets final product; for preventing becoming flexible; tensioning nut must have two; one is used for rotating fastening; one is used for preventing from becoming flexible; adopt said structure can reduce or offset the vertical working load stress of girder, improve intensity; the purpose of rigidity and load-carrying capacity.
Claims (3)
1. crane girder, it comprises girder, it is characterized in that: the two ends, girder bottom of rectangular tube are fixed with support plinth, and pull bar penetrates the centre of girder two supports base and fixes with tensioning nut.
2. a kind of crane girder according to claim 1, it is characterized in that: described rectangular tube is through a parabola moulding of arch springing machine, the fixing bearing support in described rectangular tube girder two ends is to adopt the high strength articulation bolt to connect.
3. a kind of crane girder according to claim 1, it is characterized in that: described pull bar also can adopt drag-line, and be equipped with girder with wide sheet steel cover the bottom of described girder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220241460 CN202785301U (en) | 2012-05-28 | 2012-05-28 | Main beam of crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220241460 CN202785301U (en) | 2012-05-28 | 2012-05-28 | Main beam of crane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202785301U true CN202785301U (en) | 2013-03-13 |
Family
ID=47812609
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220241460 Expired - Fee Related CN202785301U (en) | 2012-05-28 | 2012-05-28 | Main beam of crane |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202785301U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102674151A (en) * | 2012-05-28 | 2012-09-19 | 河南中州起重集团有限公司 | Crane girder |
-
2012
- 2012-05-28 CN CN 201220241460 patent/CN202785301U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102674151A (en) * | 2012-05-28 | 2012-09-19 | 河南中州起重集团有限公司 | Crane girder |
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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: 20130313 Termination date: 20150528 |
|
| EXPY | Termination of patent right or utility model |