CN203394953U - Steel pipe butt-joint structure and crane with same - Google Patents
Steel pipe butt-joint structure and crane with same Download PDFInfo
- Publication number
- CN203394953U CN203394953U CN201320480792.8U CN201320480792U CN203394953U CN 203394953 U CN203394953 U CN 203394953U CN 201320480792 U CN201320480792 U CN 201320480792U CN 203394953 U CN203394953 U CN 203394953U
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- steel pipe
- docking structure
- butt
- steel
- joint
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Abstract
The utility model provides a steel pipe butt-joint structure and a crane with the same. The steel pipe butt-joint structure comprises a plurality of steel pipes (10) and butt-joint connectors (20) connected between the two adjacent steel pipes (10). Two ends of each butt-joint connector (20) are embedded into the two steel pipes (10) adjacent to the connector respectively, a long hole (11) is formed in the butt-joint end of each steel pipe (10), and the long holes (11) extend from the butt-joint end faces of the steel pipes (10) to the direction away from the butt-joint connectors (20). By means of the steel pipe butt-joint structure, steel pipe deformation caused by welding stress can be reduced.
Description
Technical field
The utility model relates to Hoisting Machinery technical field, in particular to a kind of steel pipe docking structure and have its hoist.
Background technique
At present, along with steel pipe is widely used in the uniaxial force parts of engineering machinery, the docking of steel pipe lengthens inevitable, but reliability and merging precision after steel pipe docking lengthens are difficult to be guaranteed.
As shown in Figure 1, existing steel pipe docking elongate structure is mainly between the steel pipe 10 ' of two docking, to be embedded an inner liner circular pipe 20 ', the external diameter of inner liner circular pipe 20 ' is less than the internal diameter of steel pipe 10 ', the docking end face of two steel pipes 10 ' is all processed as the conical surface, utilize inner liner circular pipe 20 ' as liner plate, by circumferential weld, be welded.
There is irrationality in the design that the docking structure of this steel pipe 10 ' bears aspect axial force at two steel pipes 10 ', easily causes two steel pipes 10 ' in welding process, be subject to welding stress and be out of shape.
Model utility content
The utility model aims to provide a kind of steel pipe docking structure and has its hoist, can reduce the pipe deformation causing because of welding stress.
To achieve these goals, according to Yi Ge of the present utility model aspect, a kind of steel pipe docking structure is provided, comprise a plurality of steel pipes and be connected to the butt joint between adjacent two steel pipes, the two ends of butt joint are embedded respectively in two adjacent steel pipes, the butt end of each steel pipe all has slotted hole, and slotted hole extends towards the direction away from butt joint from the butt end of steel pipe.
Further, the slotted hole of steel pipe extends along the axial direction of steel pipe.
Further, the slotted hole of each steel pipe has two, between the line of centres of two slotted holes and the central axis of steel pipe, has intersection point.
Further, the docking end face of each steel pipe is the conical surface, and the cross section of the conical surface increases gradually along the direction away from butt joint.
Further, the periphery wall at the two ends of butt joint respectively with the inner circle wall Spielpassung of two steel pipes that dock.
Further, butt joint comprises: joint body, and two ends are embedded respectively in two adjacent steel pipes; And flange, being positioned on the periphery wall of joint body, two end faces of flange are welded and fixed with the docking end face of two steel pipes that dock respectively.
Further, joint body has the lightening hole extending along its axial direction.
Further, between each end face of flange and the docking end face of the steel pipe docking, there is the gap for welding.
Further, flange is positioned at the axial middle part of joint body.
According on the other hand of the present utility model, a kind of hoist is provided, comprise steel pipe docking structure, steel pipe docking structure is aforesaid steel pipe docking structure.
Application the technical solution of the utility model, by the butt end at steel pipe, slotted hole is set, slotted hole extends towards the direction away from butt joint from the butt end of steel pipe, make the docking end face of steel pipe in welding process, suffered welding stress can be spread, and reduces the distortion of the steel pipe that causes because of welding stress.In prior art, steel pipe is not offered slotted hole and easily because of the stress that is restricted in welding process, is caused distortion, and the technical solution of the utility model implementation process is simple, can play the effect that well reduces pipe deformation simultaneously.
Accompanying drawing explanation
The Figure of description that forms the application's a part is used to provide further understanding of the present utility model, and schematic description and description of the present utility model is used for explaining the utility model, does not form improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 shows according to the schematic diagram of the steel pipe docking structure of prior art;
Fig. 2 shows according to the schematic diagram of embodiment's of the present utility model steel pipe docking structure;
Fig. 3 shows according to the A-A of Fig. 2 to sectional view;
Fig. 4 shows according to the B-B of Fig. 2 to sectional view;
Fig. 5 shows according to the schematic diagram of the steel pipe of embodiment's of the present utility model steel pipe docking structure;
Fig. 6 shows according to the C-C of Fig. 5 to sectional drawing; And
Fig. 7 shows according to the schematic diagram of the butt joint of embodiment's of the present utility model steel pipe docking structure.
Embodiment
Describe below with reference to the accompanying drawings and in conjunction with the embodiments the utility model in detail.It should be noted that, in the situation that not conflicting, embodiment and the feature in embodiment in the application can combine mutually.
As shown in Figures 2 to 4, according to embodiment of the present utility model, a kind of steel pipe docking structure is provided, comprise steel pipe 10 and butt joint 20, steel pipe 10 has a plurality of, in a plurality of steel pipes 10, between at least one pair of two adjacent steel pipe 10, by butt joint 20, be connected, butt joint 20 is embedded respectively in two adjacent steel pipes 10 for column structure ，Qi two ends.Each steel pipe 10 butt end is provided with slotted hole 11, and this slotted hole 11 extends from steel pipe 10 butt end towards the direction away from butt joint 20.By offering slotted hole 11, make the docking end face of two adjacent steel pipes 10 when welding, can discharge welding stress, reduced, due to steel pipe 10 distortion that stress causes that is restricted in, to have guaranteed the quality of steel pipe 10 docking.
In conjunction with referring to Fig. 5 and Fig. 6, in order to make the better effects if of stress relief, reduce to greatest extent steel pipe 10 distortion, the slotted hole 11 of steel pipe 10 extends along the axial direction of steel pipe 10.
Preferably, the slotted hole 11 of steel pipe 10 has two, two slotted holes 11 are symmetrical arranged at the radially two ends of steel pipe 10, between the line of centres of two slotted holes 11 and the central axis of steel pipe 10, have intersection point, can make the stress relief of welding end surface of steel pipe 10 more even.
Preferably, the docking end face of steel pipe 10 is designed to the conical surface 12, and the cross-section area of this conical surface 12 increases gradually along the direction away from butt joint 20, can conveniently discharge the welding slag producing in welding process.
Preferably, adopt the steel pipe 10 of same lot number, reduce the impact on the merging precision between steel pipe 10 of size, shape and tolerance because of steel pipe 10 as far as possible, can guarantee the coaxality between adjacent two steel pipes 10.
Preferably, the periphery wall at butt joint 20 two ends respectively with the inner circle wall Spielpassung of adjacent two steel pipes 10, can play the effect of the coaxality that guarantees adjacent two steel pipes 10.
When practical set, first respectively adjacent two steel pipes 10 are processed with the inner circle wall that butt joint 20 contacts, so that adjacent two steel pipes 10 match with butt joint 20 better, by whole butt joint two ends are embedded in two steel pipes 10, the merging precision of having guaranteed adjacent two steel pipes 10, has improved joint quality.
In conjunction with referring to Fig. 7, butt joint 20 is workpiece, preferably adopts the good material of welding performance to guarantee welding quality.Butt joint 20 comprises joint body 21 and flange 22.Wherein joint body 21 is cylindric, two ends be embedded respectively in two adjacent steel pipes 10 and with steel pipe 10 Spielpassung.Flange 22 is positioned on the periphery wall of joint body 21, and along the circumferential extension of joint body 21.Two end faces of flange 22 are respectively used to weld with the end face that docks of two adjacent steel pipes 10, can improve largely welding quality.
In order to strengthen the join strength of two steel pipes 10, steel pipe 10 and the joint body 21 of slotted hole 11 place's butt weldings of steel pipe 10, compared to the lower problem of weld strength that forms a weld seam in prior art between the docking end face of two steel pipes 10 and cause, the weld seam at slotted hole 11 places of steel pipe 10 can be strengthened the weld strength between two adjacent steel pipes 10.
Preferably, the end face of flange 22 has gap 30 with docking between end face of the steel pipe of respective side 10, adopts circular seam welding welding in welding Shi，Gai gap 30, can further guarantee welding quality.
Preferably, flange 22 is positioned at the axial middle part of joint body 21, can ensure the quality of products and be evenly distributed, and prevents the overweight and phenomenon that the other end kicks the beam in one end.
Preferably, offer lightening hole 23 in joint body 21, this lightening hole 23 extends along the axial direction of joint body 21, can alleviate the whole weight of steel pipe docking structure.This lightening hole 23 can be through hole, can be also blind hole.Generally, in order to guarantee and join strength and the welding quality of adjacent two steel pipes 10, the wall thickness that joint body 21 is offered after lightening hole 23 is generally not less than 10 millimeters.
When welding, first steel pipe docking structure is put into fixed base, to guarantee that steel pipe docking structure is not subject to the impact of additional bending moment in welding process.Then make to have gap between the docking end face of steel pipe 10 and the corresponding end face of flange 22, adopt circumferential weld welding, preheating before welding, postweld heat preservation certain hour, finally adopts artificial aging, to reduce welding residual stress impact.
Preferably, fixed base is selected suitable channel-section steel, and channel-section steel has advantages of that selection is convenient, convenient operation and economical and practical.
The technical solution of the utility model practical, safe and reliable, flange 22 two ends of butt joint 20 connect two steel pipes 10, have formed two weld seams, contrast prior art, weld strength is higher; Meanwhile, merging precision improves, and avoids the eccentric damage inactivation causing of docking; In addition, steel pipe 10 has slotted hole 11, and when circumferential weld welds, the diffusion of guiding stress, can not cause steel pipe 10 distortion, if steel pipe is not offered slotted hole 11, when circumferential weld welds, constraint stress can cause steel pipe 10 distortion, affects welding quality; Moreover the utility model can. utilize current material to realize, cost-saving, raise the efficiency.
The utility model also provides a kind of hoist, comprises steel pipe docking structure, and this steel pipe docking structure is aforesaid steel pipe docking structure.
From above description, can find out, the utility model the above embodiments have realized following technique effect: by the butt end at steel pipe, slotted hole is set, slotted hole extends towards the direction away from butt joint from the butt end of steel pipe, make the docking end face of steel pipe in welding process, suffered welding stress can be spread, and reduces the distortion of the steel pipe that causes because of welding stress.In prior art, steel pipe is not offered slotted hole and easily because of the stress that is restricted in welding process, is caused distortion, and the technical solution of the utility model implementation process is simple, can play the effect that well reduces pipe deformation simultaneously.
The foregoing is only preferred embodiment of the present utility model, be not limited to the utility model, for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.
Claims (10)
1. a steel pipe docking structure, comprise a plurality of steel pipes (10) and be connected to the butt joint (20) between adjacent two described steel pipes (10), the two ends of described butt joint (20) are embedded respectively in adjacent two described steel pipes (10), it is characterized in that, the butt end of steel pipe described in each (10) all has slotted hole (11), and described slotted hole (11) extends towards the direction away from described butt joint (20) from the butt end of described steel pipe (10).
2. steel pipe docking structure according to claim 1, is characterized in that, the described slotted hole (11) of described steel pipe (10) extends along the axial direction of described steel pipe (10).
3. steel pipe docking structure according to claim 1, is characterized in that, the described slotted hole (11) of steel pipe described in each (10) has two, between the line of centres of two described slotted holes (11) and the central axis of described steel pipe (10), has intersection point.
4. steel pipe docking structure according to claim 1, is characterized in that, the described docking end face of steel pipe described in each (10) is the conical surface (12), and the cross section of the described conical surface (12) increases gradually along the direction away from described butt joint (20).
5. steel pipe docking structure according to claim 1, is characterized in that, the periphery wall at the two ends of described butt joint (20) respectively with the inner circle wall Spielpassung of two the described steel pipes (10) that dock.
6. according to the steel pipe docking structure described in any one in claim 1 to 5, it is characterized in that, described butt joint (20) comprising:
Joint body (21), two ends are embedded respectively in adjacent two described steel pipes (10); And
Flange (22), is positioned on the periphery wall of described joint body (21), and two end faces of described flange (22) are welded and fixed with the described docking end face of two the described steel pipes (10) that dock respectively.
7. steel pipe docking structure according to claim 6, is characterized in that, described joint body (21) has the lightening hole (23) extending along its axial direction.
8. steel pipe docking structure according to claim 6, is characterized in that, has the gap (30) for welding described in each of described flange (22) between the described docking end face of end face and the described steel pipe (10) docking.
9. steel pipe docking structure according to claim 6, is characterized in that, described flange (22) is positioned at the axial middle part of described joint body (21).
10. a hoist, comprises steel pipe docking structure, it is characterized in that, described steel pipe docking structure is the steel pipe docking structure described in any one in claim 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320480792.8U CN203394953U (en) | 2013-08-07 | 2013-08-07 | Steel pipe butt-joint structure and crane with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320480792.8U CN203394953U (en) | 2013-08-07 | 2013-08-07 | Steel pipe butt-joint structure and crane with same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203394953U true CN203394953U (en) | 2014-01-15 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320480792.8U Withdrawn - After Issue CN203394953U (en) | 2013-08-07 | 2013-08-07 | Steel pipe butt-joint structure and crane with same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203394953U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103398057A (en) * | 2013-08-07 | 2013-11-20 | 中联重科股份有限公司 | Steel pipe butt joint structure and hoist with same |
-
2013
- 2013-08-07 CN CN201320480792.8U patent/CN203394953U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103398057A (en) * | 2013-08-07 | 2013-11-20 | 中联重科股份有限公司 | Steel pipe butt joint structure and hoist with same |
| CN103398057B (en) * | 2013-08-07 | 2015-10-28 | 中联重科股份有限公司 | Steel pipe butt joint structure and there is its hoist |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140115 Effective date of abandoning: 20151028 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |