CN105035978A - Structure of main rotary rod of hoisting arm of pipe hoist and manufacturing method - Google Patents
Structure of main rotary rod of hoisting arm of pipe hoist and manufacturing method Download PDFInfo
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- CN105035978A CN105035978A CN201510395006.8A CN201510395006A CN105035978A CN 105035978 A CN105035978 A CN 105035978A CN 201510395006 A CN201510395006 A CN 201510395006A CN 105035978 A CN105035978 A CN 105035978A
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- plate
- swing arm
- main
- main swing
- arm
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/62—Constructional features or details
- B66C23/64—Jibs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C2700/00—Cranes
- B66C2700/03—Cranes with arms or jibs; Multiple cranes
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Jib Cranes (AREA)
Abstract
The invention discloses a structure of a main rotary rod of a hoisting arm of a pipe hoist and a manufacturing method. The structure comprises a U-shaped main plate, a middle plate and a web plate. The U-shaped main plate comprises a bottom plate and two wing plates formed on two sides of the bottom plate. The middle plate is welded between the middles of the two wing plates. The web plate is welded to the ends of the two wing plates. The U-shaped main plate serves as the main bearing component of the main rotary rod, the material cost of the main rotary rod can be reduced, and the mass of the main rotary rod is reduced. Meanwhile, the middle plate is arranged between the middles of the wing plates of the U-shaped main plate serving as the main bearing component and can play a role in supporting the wing plates, the bearing capacity of the main rotary rod is improved while the mass of the main rotary rod is reduced, and then the effects of reducing the materials cost and the mass of the main rotary rod are realized on the premise of guaranteeing the bearing capacity and meeting the strength requirement of the main rotary rod. The U-shaped main plate of the main rotary rod serves as the main bearing component and is formed in an integral bending mode, welding joints of the surface of the main rotary rod are reduced, the main rotary rod is not prone to twisting or deforming, and the stress state is more reasonable.
Description
Technical field
The present invention relates to pipe crane hoisting arm design field, particularly relate to structure and the method for making of the main swing arm of a kind of pipe crane hoisting arm.
Background technology
Along with the fast development of modern society and technology, the construction of domestic mega project is also accelerated day by day.Pipe sling, one belongs to big-and-middle-sized pipeline construction Special Hoisting Equipment, and application is more and more extensive, acts on also increasing, also more and more higher to the requirement of its performance.Therefore, the design of pipe sling more and more causes the attention of enterprise.In recent years, the activity in market provides higher level demand for development also to the design of pipe sling, and the optimal design of pipe sling has become main path and means that each enterprise promotes competitiveness.
At present, the homemade big-and-middle-sized pipe crane hoisting arm of China generally adopts cross section to be the boom structure of quadrangle, is formed by the components welding of two U-shaped, needs to weld corresponding both sides, thus there are two weld seams on arm surface.This kind of boom structure all also exists great defect for blanking bending, welding etc.: one is bending aspect, form because the arm of this kind of structure is welded together by two pieces of bending plates, therefore it is quite high to the accuracy requirement of bending, and two pieces bending plate can not be converted into one touch the same, or the deviation of width aspect, or the deviation of angle aspect, precision is wayward; Two is welding aspects, and because various deviation exists, bring great trouble to welding work, not only production efficiency is low, and individual labor intensity is large, and product design can not be guaranteed, and welding deformation is comparatively large, and arm is torsional deflection very easily.There is the series of problems such as scantling of structure is unreasonable, waste of material, safety less stable.
Therefore, carry out structural analysis and optimize just seeming and important to pipe sling, this also proposes stricter requirement to the designer of pipe sling, do not affecting homework precision, operation stability, under the prerequisite of reliability, accomplishes that economy and technical the best are arranged in pairs or groups.
Summary of the invention
Technical matters to be solved by this invention be to provide a kind of scantling of structure rationally, save material, the structure of the main swing arm of the good pipe crane hoisting arm of safety stability and method for making, can homework precision do not affected, operation stability, under the prerequisite of reliability, accomplish that economy and technical the best are arranged in pairs or groups.
For realizing above-mentioned technique effect, the invention discloses the structure of the main swing arm of a kind of pipe crane hoisting arm, comprising:
U-shaped mainboard, comprises base plate and is formed at two wing plates of described base plate both sides;
Middle plate, between the middle part being welded in described two wing plates; And
Web, between the end being welded in described two wing plates.
The structure of the main swing arm of described pipe crane hoisting arm is further improved and is, described U-shaped mainboard adopts HG60 type high strength steel one bending forming.
The structure of the main swing arm of described pipe crane hoisting arm is further improved and is, the width range of described base plate is 230mm ~ 250mm, and the width range of described wing plate is 150mm ~ 170mm.
The structure of the main swing arm of described pipe crane hoisting arm is further improved and is, the width of described base plate is 240mm, and the width of described wing plate is 160mm.
The structure of the main swing arm of described pipe crane hoisting arm is further improved and is, described middle plate adopts HG60 type high strength steel to make, and the side away from the side of described base plate in described middle plate welds with described wing plate.
The structure of the main swing arm of described pipe crane hoisting arm is further improved and is, described web adopts HG60 type high strength steel to make, and welds in described web away from the side of the side of described base plate with described wing plate.
The invention also discloses the method for making of the main swing arm of a kind of pipe crane hoisting arm, comprise step:
Make U-shaped mainboard, described U-shaped mainboard comprises base plate and is formed at two wing plates of described base plate both sides;
Plate in welding between the middle part of described two wing plates; And
Web is welded between the end of described two wing plates.
The method for making of the main swing arm of described pipe crane hoisting arm is further improved and is, makes U-shaped mainboard by following steps:
Base plate is provided;
The both sides of described base plate are bent respectively, forms wing plate.
The method for making of the main swing arm of described pipe crane hoisting arm is further improved and is, described middle plate adopts HG60 type high strength steel to make, and between the middle part of described two wing plates, in welding, the step of plate comprises:
Between the middle part described middle plate being positioned over described two wing plates;
Side away from the side of described base plate in described middle plate is welded with described wing plate.
The method for making of the main swing arm of described pipe crane hoisting arm is further improved and is, described web adopts HG60 type high strength steel to make, and the step of welding web between the middle part of described two wing plates comprises:
Between the end described web being positioned over described two wing plates;
Weld in described web with described wing plate away from the side of the side of described base plate.
The present invention, owing to have employed above technical scheme, makes it have following beneficial effect:
Adopt one piece of U-shaped mainboard as the main load bearing component of main swing arm, the material cost of main swing arm can be reduced, reduce the quality of main swing arm, meanwhile, plate in arranging between the middle part of the wing plate of the U-shaped mainboard of main load bearing component, can play the effect supporting wing plate, on the basis of quality reducing main swing arm, improve the load-carrying capacity of main swing arm, then reach on the guarantee load-carrying capacity of main swing arm and the basis of requirement of strength, reduce the effect of material cost and main swing arm quality;
The U-shaped mainboard of main swing arm is as main load bearing component, adopt one bending forming, reduce main swing arm surface weld, not easily torsional deflection, strained condition is more reasonable, and web is welded on the inner side of main swing arm, web not as main load bearing component, so, weld seam between web and wing plate can not have a negative impact to the anti-twist of main swing arm, therefore, the design of main swing arm can improve the ability of its anti-twist distortion, and strained condition is more reasonable;
The geometric accuracy of the U-shaped mainboard of main swing arm is effectively controlled by bending process, and the impact of welding deformation on boom structure dimensional accuracy is minimum, is convenient to make.
Accompanying drawing explanation
Fig. 1 is the using state schematic diagram of the structure of the main swing arm of pipe crane hoisting arm of the present invention.
Fig. 2 is the section plan of the structure of the main swing arm of pipe crane hoisting arm of the present invention.
Fig. 3 is the side schematic view of the structure of the main swing arm of pipe crane hoisting arm of the present invention.
Fig. 4 is the A-A cross-sectional view of Fig. 2.
Fig. 5 is the force analysis figure of the structure of the main swing arm of pipe crane hoisting arm of the present invention.
Detailed description of the invention
Below in conjunction with the drawings and the specific embodiments, the present invention is further detailed explanation.
First consult shown in Fig. 1 ~ 4, pipe crane hoisting arm is formed primarily of two main swing arms 10, one end of two main swing arms 10 is interconnected by the connection end plate 21 of V-shape, can arrange otic placode 22 connecting the both sides of end plate 21, and this otic placode 22 is used for connecting the rope of tractive arm.The other end of two main swing arms 10 then arranges articulated slab 23 respectively, for being articulated and connected with the hinged seat of pipe sling equipment.
Main swing arm 10 is main load bearing components of arm, and its designing quality affects stability and the serviceability of whole pipe sling.Therefore, be necessary to the rational Design on Plane of the main swing arm of arm.
The structure of the main swing arm of a kind of pipe crane hoisting arm of the present invention combines primarily of plate 12 and one block of web 13 in one piece of U-shaped mainboard 11, a piece, and the cross section of this main swing arm 10 combined is in " saying " font, as shown in Figure 4.
U-shaped mainboard adopts HG60 type high strength steel one bending forming, comprises a base plate 111 and is bent to form two wing plates 112 in this base plate 111 both sides.Base plate 111 is positioned at the outside of arm, and two wing plates 112, when stand under load, play the main effect of bearing twisting stress.U-shaped mainboard adopts one bending forming, and decrease the weld seam on main swing arm 10 surface, wing plate 112 surface does not exist weld seam, avoids when wing plate 112 bearing load, and commissure stress is concentrated and torsional deflection, even ftractures, affects the normal use of pipe sling.Compare the structure of the main swing arm of arm that traditional employing two pieces of U-shaped assemblies are spliced, main swing arm 10 of the present invention not only reduces material cost, alleviate the quality of main swing arm, and adopt the U-shaped mainboard of one bending forming can also reduce main swing arm surface weld, improve the bending resistance of main swing arm 10, make main swing arm 10 not easily torsional deflection, strained condition is more reasonable.
Middle plate 12 adopts HG60 type high strength steel to make, and between the middle part being welded in two wing plates 112, when welding, conveniently actual welding operation, welds the side away from the side of base plate 111 in middle plate 12 with wing plate 112.Middle plate 12 can play the effect of support two wing plate 112, on the basis of quality reducing main swing arm 10, improve structural strength and the load-carrying capacity of main swing arm 10, then reach on the basis ensureing the main load-carrying capacity of swing arm 10 and the requirement of structural strength, reduce the main material cost of swing arm 10 and the effect of quality, accomplish that economy truly and technical the best are arranged in pairs or groups.
Web 13 adopts HG60 type high strength steel to make, and between the end being welded in two wing plates 112, when welding, conveniently actual welding operation, welds in web 13 with wing plate 112 away from the side of the side of base plate 111.Web 13 is arranged on the inner side of main swing arm, not as the main load bearing component of main swing arm, so, weld seam between web 13 and wing plate 112 can not cause adverse effect to main the anti-twist of swing arm 10, so, the outer surface of main swing arm 10 of the present invention and main carrying surface do not exist weld seam, and main swing arm 10 can not be subject to the interference of weld seam and easy torsional deflection, and strained condition is stable and rationally.Meanwhile, by arranging the effect that web 13 can also play support two wing plate 112 further between two wing plates 112, improve load-carrying capacity and the structural strength of main swing arm 10 further.
As the better embodiment of the structure of the main swing arm of a kind of pipe crane hoisting arm of the present invention, in U-shaped mainboard, the width range of base plate 111 is 230mm ~ 250mm, the width range of wing plate 112 is 150mm ~ 170mm, the U-shaped mainboard adopting above-mentioned specification can be proved, the main swing arm 10 of the structure of the present invention obtained is when quality is minimum, its maximum degree of disturbing and maximum stress, all in the claimed range of degree of disturbing allowable and permissible stress, meet the requirement of strength of main swing arm 10 and stability requirement.
In order to verify this conclusion, we are optimized by the optimal design module of ANSYSWorkbench.Set up arm three-dimensional parameter model and grid division (material is Q345B, meets VonMises yield criteria), shown in composition graphs 5.
Add boundary condition and lifted load:
(1) to the bearing hole constraint one-movement-freedom-degree in x, y, z direction and the rotational freedom around x, v;
(2) the luffing assembly pulley hanger hole axle constraint one-movement-freedom-degree of x, y, z and the rotational freedom around x, v, and by the thickness (T) of the width (B) of the width (H) of base plate 111, wing plate 112, base plate 111, the thickness (T of middle plate 12
2) being set to Optimal Parameters, permissible stress is set to state variable (230MPa), and arm gross weight is set to objective function, and result of calculation is as shown in following table table 1.
The relation of table 1 arm cross sectional shape parameter and constraint condition
As can be seen from upper table table 1, impact for arm Combination property mainly comes from the width of wing plate and the thickness of middle plate, next is only the width of base plate, and the width of base plate for arm deadweight or maximum stress also or maximum degree of disturbing all do not produce very large impact, so almost do not play any effect with regard to the width of Combination property base plate, the income that the optimization width of wing plate and the thickness of middle plate bring is greater than other parameters.And be 230mm ~ 250mm at the width range of base plate, when the width range of wing plate is 150mm ~ 170mm, the main swing arm of the structure of the present invention obtained is when quality is minimum, its maximum degree of disturbing and maximum stress, all in the claimed range of degree of disturbing allowable and permissible stress, meet the requirement of strength of main swing arm and stability requirement.Especially level off to 240mm at the width of base plate, the width of wing plate level off to 160mm time, its maximum degree of disturbing and maximum stress minimum, maximum apart from the space of degree of disturbing allowable and permissible stress, the size can bearing flexural deformation and stress loading is maximum, and quality is minimum, structural optimization.
The structure of the main swing arm of a kind of pipe crane hoisting arm of the present invention mainly adopts following method for making to carry out processing and fabricating:
1, make U-shaped mainboard 11, U-shaped mainboard 11 adopts HG60 type high strength steel one bending forming, comprises a base plate 111 and is formed at two wing plates 112 of these base plate 111 both sides, specifically comprise:
Base plate 111 is provided;
The both sides of base plate 111 are bent respectively, forms two wing plates 112.
2, plate 12 in welding between the middle part of two wing plates 112.
Middle plate 12 adopts HG60 type high strength steel to make, and between the middle part of two wing plates 112, in welding, the step of plate 12 comprises:
Between the middle part middle plate 12 being positioned over two wing plates 112;
Side away from the side of base plate 111 in middle plate 12 is welded with wing plate 112.
3, between the end of two wing plates 112, web 13 is welded.
Web 13 adopts HG60 type high strength steel to make, and the step of welding web 13 between the middle part of two wing plates 112 comprises:
Between end web 13 being positioned over two wing plates 112;
Weld in web 13 with wing plate 112 away from the side of the side of base plate 111.
The structure of the main swing arm of a kind of pipe crane hoisting arm of the present invention and method for making are by the main load bearing component of employing one piece of U-shaped mainboard as main swing arm, the channel-section steel of preferred 240mm × 160mm, draw materials conveniently, the material cost of main swing arm can be reduced, reduce the quality of main swing arm, high financial profit, simultaneously, plate in arranging between the middle part of the wing plate of the U-shaped mainboard of main load bearing component, the effect supporting wing plate can be played, on the basis of quality reducing main swing arm, improve the load-carrying capacity of main swing arm, then reach on the guarantee load-carrying capacity of main swing arm and the basis of requirement of strength, reduce the effect of material cost and main swing arm quality,
The U-shaped mainboard of main swing arm is as main load bearing component, adopt one bending forming, reduce main swing arm surface weld, not easily torsional deflection, strained condition is more reasonable, and web is welded on the inner side of main swing arm, web not as main load bearing component, so, weld seam between web and wing plate can not have a negative impact to the anti-twist of main swing arm, therefore, the design of main swing arm can improve the ability of its anti-twist distortion, and strained condition is more reasonable;
The geometric accuracy of the U-shaped mainboard of main swing arm is effectively controlled by bending process, and the impact of welding deformation on boom structure dimensional accuracy is minimum, is convenient to make.
Below by reference to the accompanying drawings and embodiment to invention has been detailed description, those skilled in the art can make many variations example to the present invention according to the above description.Thus, some details in embodiment should not form limitation of the invention, the present invention by the scope that defines using appended claims as protection scope of the present invention.
Claims (10)
1. a structure for the main swing arm of pipe crane hoisting arm, is characterized in that, comprising:
U-shaped mainboard, comprises base plate and is formed at two wing plates of described base plate both sides;
Middle plate, between the middle part being welded in described two wing plates; And
Web, between the end being welded in described two wing plates.
2. the structure of the main swing arm of pipe crane hoisting arm as claimed in claim 1, is characterized in that: described U-shaped mainboard adopts HG60 type high strength steel one bending forming.
3. the structure of the main swing arm of pipe crane hoisting arm as claimed in claim 2, it is characterized in that: the width range of described base plate is 230mm ~ 250mm, the width range of described wing plate is 150mm ~ 170mm.
4. the structure of the main swing arm of pipe crane hoisting arm as claimed in claim 3, it is characterized in that: the width of described base plate is 240mm, the width of described wing plate is 160mm.
5. the structure of the main swing arm of pipe crane hoisting arm as claimed in claim 3, is characterized in that: described middle plate adopts HG60 type high strength steel to make, and the side away from the side of described base plate in described middle plate welds with described wing plate.
6. the structure of the main swing arm of pipe crane hoisting arm as claimed in claim 3, is characterized in that: described web adopts HG60 type high strength steel to make, and welds in described web away from the side of the side of described base plate with described wing plate.
7. a method for making for the main swing arm of pipe crane hoisting arm, is characterized in that, comprise step:
Make U-shaped mainboard, described U-shaped mainboard comprises base plate and is formed at two wing plates of described base plate both sides;
Plate in welding between the middle part of described two wing plates; And
Web is welded between the end of described two wing plates.
8. the method for making of the main swing arm of pipe crane hoisting arm as claimed in claim 7, is characterized in that, crosses following steps and makes U-shaped mainboard:
Base plate is provided;
The both sides of described base plate are bent respectively, forms wing plate.
9. the method for making of the main swing arm of pipe crane hoisting arm as claimed in claim 7, is characterized in that, described middle plate adopts HG60 type high strength steel to make, and between the middle part of described two wing plates, in welding, the step of plate comprises:
Between the middle part described middle plate being positioned over described two wing plates;
Side away from the side of described base plate in described middle plate is welded with described wing plate.
10. the method for making of the main swing arm of pipe crane hoisting arm as claimed in claim 7, is characterized in that,
Described web adopts HG60 type high strength steel to make, and the step of welding web between the middle part of described two wing plates comprises:
Between the end described web being positioned over described two wing plates;
Weld in described web with described wing plate away from the side of the side of described base plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510395006.8A CN105035978A (en) | 2015-07-07 | 2015-07-07 | Structure of main rotary rod of hoisting arm of pipe hoist and manufacturing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510395006.8A CN105035978A (en) | 2015-07-07 | 2015-07-07 | Structure of main rotary rod of hoisting arm of pipe hoist and manufacturing method |
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| Publication Number | Publication Date |
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| CN105035978A true CN105035978A (en) | 2015-11-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510395006.8A Pending CN105035978A (en) | 2015-07-07 | 2015-07-07 | Structure of main rotary rod of hoisting arm of pipe hoist and manufacturing method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11053104B2 (en) | 2019-06-06 | 2021-07-06 | Caterpillar Inc. | Boom for a pipelaying machine |
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|---|---|---|---|---|
| US20040033109A1 (en) * | 2000-12-05 | 2004-02-19 | Giuliano Gelmi | Apparatus able typically to transform a frame mounted on crawler tracks into a pipe playing machine |
| US20100108632A1 (en) * | 2003-03-11 | 2010-05-06 | Volvo Construction Equipment Ab | Pipelayer Crane Excavator Apparatus and Methods |
| CN203461722U (en) * | 2013-08-01 | 2014-03-05 | 辽宁瑞丰专用车制造有限公司 | Boom section structure |
| CN203889957U (en) * | 2014-06-13 | 2014-10-22 | 江苏天普重工有限公司 | Lifting arm of pipelayer |
| CN204326544U (en) * | 2014-12-03 | 2015-05-13 | 三一汽车制造有限公司 | Box arm joint, foldable arm rack, concrete mixer and fire fighting truck |
-
2015
- 2015-07-07 CN CN201510395006.8A patent/CN105035978A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040033109A1 (en) * | 2000-12-05 | 2004-02-19 | Giuliano Gelmi | Apparatus able typically to transform a frame mounted on crawler tracks into a pipe playing machine |
| US20100108632A1 (en) * | 2003-03-11 | 2010-05-06 | Volvo Construction Equipment Ab | Pipelayer Crane Excavator Apparatus and Methods |
| CN203461722U (en) * | 2013-08-01 | 2014-03-05 | 辽宁瑞丰专用车制造有限公司 | Boom section structure |
| CN203889957U (en) * | 2014-06-13 | 2014-10-22 | 江苏天普重工有限公司 | Lifting arm of pipelayer |
| CN204326544U (en) * | 2014-12-03 | 2015-05-13 | 三一汽车制造有限公司 | Box arm joint, foldable arm rack, concrete mixer and fire fighting truck |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11053104B2 (en) | 2019-06-06 | 2021-07-06 | Caterpillar Inc. | Boom for a pipelaying machine |
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Application publication date: 20151111 |