CN204324760U - A kind of independent arm head and hoisting crane - Google Patents

A kind of independent arm head and hoisting crane Download PDF

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Publication number
CN204324760U
CN204324760U CN201420611899.6U CN201420611899U CN204324760U CN 204324760 U CN204324760 U CN 204324760U CN 201420611899 U CN201420611899 U CN 201420611899U CN 204324760 U CN204324760 U CN 204324760U
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arm
link span
arm head
support
independent
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CN201420611899.6U
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Inventor
谷思生
陈志灿
冯志强
张平海
李长青
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Xuzhou Heavy Machinery Co Ltd
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Xuzhou Heavy Machinery Co Ltd
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Abstract

The utility model discloses a kind of independent arm head, comprising: link span (1), for connecting main crane arm (5); Swivel mount (2), hinged and stretch in described link span (1) outward, it is established lift heavy point; Luffing mechanism, is located between described link span (1) and swivel mount (2), for regulating described swivel mount (2) relative to the angle of link span (1); Support (4), itself and described link span (1) are hinged, for supporting aerofoil profile stand connection.This independent arm head is arranged on main crane arm minor details arm can not only increase lifting height and amplitude, stronger lifting performance requirement can also be met simultaneously, and structure windage is little, quick for installation, convenient disassembly, safe and reliable, its performance is specially adapted to wind-powered electricity generation industry, can be used as wind-powered electricity generation dedicated variable width formula independence arm head and uses.

Description

A kind of independent arm head and hoisting crane
Technical field
The utility model relates to technical field of engineering machinery, particularly the independent arm head of ultra-large type hoisting crane.The utility model also relates to the hoisting crane being provided with described arm head.
Background technology
Crane arm is the required operation part of crane, this type of hoisting crane weight is very large, by axle load and car load layout restrictions, lifting owner crane arm collapsing length is limited, and its arm head lift heavy point from main crane arm cylindrical shell very close to, be applied to some occasion, particularly during Wind turbines Assembly &Disassembly, the performance of main crane arm, height and amplitude have certain limitation, but height, amplitude meet can interfere with minor details arm head portion, cause Assembly &Disassembly job very difficult, even can not lift heavy.
That is, in operating modes such as similar wind-powered electricity generation uses, need certain height, amplitude and very large lifting performance, traditional wind-powered electricity generation arm head is difficult to meet the requirement of lifting height, amplitude and lifting performance two aspect under different wind-powered electricity generation operating mode simultaneously, the effect of all wind power facilities of the safe and efficient installation of out of reach.
Along with development and the market demand of super-tonnage crane, for different environments for use and working condition, occurred multi-form Special independent arm head for wind electricity structure, it is arranged on the supplement main crane arm minor details arm realizing height and amplitude when wind-powered electricity generation lifts.
Please refer to Fig. 1, Fig. 1 is the structural representation of existing hoisting crane independence arm head.
As shown in the figure, truss-like independence arm head adopts link span to add the version of " gooseneck boom ", primarily of compositions such as link span assembly 1', arm head assembly 2', arm-tie assembly 3', conductor rope pulley 4' and assembly pulley 5', link span assembly 1' is for connecting main crane arm, arm head assembly 2' docks with link span assembly 1', its tip forward leans out certain distance, to make lift heavy point away from the cylindrical shell of main crane arm.
Although this independent arm head can increase lifting height and amplitude to a certain extent, still have the following disadvantages: one, this structure lifting performance is on the weak side; Its two, this structural entity distribution of force is uneven; Its three, this structure can not luffing, cannot meet the demand to different operating mode in wind-powered electricity generation lifting; Its four, arm head has surpassed position and connected forward and on the low side, only connecting top can not the whole jib tip structure of available protecting.
Visible, in order to meet the main equipment that Wind turbines equal-height position is installed, need to have very strong lifting performance in certain height and amplitude range, however height and the supplement of amplitude and high lifting performance require between contradiction be a difficult point in independent arm head design process.。
Therefore, how to make independent arm head can either increase lifting height and amplitude, have again higher lifting performance, be those skilled in the art's technical issues that need to address simultaneously.
Utility model content
The purpose of this utility model is to provide a kind of independent arm head.This independent arm head is arranged on and main crane arm minor details arm can not only increases lifting height and amplitude, stronger lifting performance requirement can also be met simultaneously, and structure windage is little, quick for installation, convenient disassembly, safe and reliable.
Another object of the present utility model is to provide a kind of hoisting crane being provided with described independent arm head.
For achieving the above object, the utility model provides a kind of independent arm head, comprising:
Link span, for connecting main crane arm;
Swivel mount, hinged and stretch in described link span outward, it is established lift heavy point;
Luffing mechanism, is located between described link span and swivel mount, for regulating described swivel mount relative to the angle of link span;
Support, itself and described link span are hinged, for supporting aerofoil profile stand connection.
Preferably, the front end of described link span is angled end, and described swivel mount is articulated with the lower end of described angled end, between the upper end that described angled end is located at by described luffing mechanism and swivel mount.
Preferably, described swivel mount is triangular in shape on side, and its first hinge is articulated with the lower end of described angled end, and the second hinge is connected by luffing mechanism with the upper end of described angled end, and tri-joint mechanism is installed assembly pulley and formed described lift heavy point.
Preferably, described triangle is right-angled triangle or obtuse-angled triangle, and its second hinge is right angle hinge or obtuse angle hinge.
Preferably, described luffing mechanism is the adjustable luffing arm-tie of connecting length or hydraulic ram.
Preferably, described foil support upper end is provided with the first conductor rope pulley, and the upper end of described link span angled end is provided with the second sheave.
Preferably, described support is positioned at above link span, and is articulated with described link span rear end, and in working order, its front end to described link span tilts.
Preferably, described foil support attaching parts to comprise before foil support arm-tie after arm-tie and foil support; Before described foil support, one end of arm-tie connects the upper end of described foil support, and the other end connects the end of described link span; After described foil support, one end of arm-tie connects the upper end of described foil support, and the other end connects the front end of super lifting device.
Preferably, at travelling position, before described foil support, foil support, arm-tie folding rear entirety together with arm-tie after foil support is placed on described link span.
Preferably, at travelling position, it is hinged that rising on rear side of the second hinge of described swivel mount and described luffing arm-tie upper end receives hinge.
Preferably, described foil support and link span are by being connected journal stirrup and bearing pin is fixed, and before described foil support, arm-tie is supported in the bracket of described link span.
For realizing above-mentioned second object, the utility model provides a kind of hoisting crane, and comprise gantry body, main crane arm and be located at the arm head mechanism of described main crane arm minor details arm, described arm head mechanism is the independent arm head described in above-mentioned any one.
Arm head provided by the utility model is amplitude-variable independence arm head, compared with overall fixed type independence arm head, it is divided into link span and swivel mount two parts, swivel mount and link span are hinged, can rotate relative to link span, during use, the angle of swivel mount can be regulated according to actual needs by luffing mechanism, thus the requirement adapted in the operations such as wind-powered electricity generation lift heavy to sling height and amplitude under different operating mode, support is for supporting aerofoil profile stand connection, itself and link span are hinged, upwardly-openable or pack up downwards, under its supporting role, significantly can improve arm head and principal arm strained condition, make arm head stressed more reasonable, the intensity of independent arm head and principal arm can not only be increased, lift heavy ability and stability, can also the whole jib tip structure of available protecting, its performance is specially adapted to wind-powered electricity generation industry, can be used as wind-powered electricity generation dedicated variable width formula independence arm head to use.
Hoisting crane provided by the utility model is provided with above-mentioned independent arm head, and because independent arm head has above-mentioned technique effect, the hoisting crane being provided with this independent arm head also should have identical technique effect.
Accompanying drawing explanation
Fig. 1 is the structural representation of existing hoisting crane independence arm head;
Fig. 2 provides by the utility model the structural representation of independent arm head;
Fig. 3 is structural representation when arm head independent shown in Fig. 2 is in travelling position;
Fig. 4 is the partial enlarged drawing at A position in Fig. 3;
Fig. 5 is the partial enlarged drawing at B position in Fig. 3;
Fig. 6 is the partial enlarged drawing at C position in Fig. 3;
Fig. 7 provides by the utility model the using state reference diagram of independent arm head.
In Fig. 1:
Link span assembly 1' arm head assembly 2' arm-tie assembly 3' conductor rope pulley 4' assembly pulley 5'
In Fig. 2 to Fig. 7:
1. link span 2. swivel mount 21. first hinge 22. second hinge 23. tri-joint mechanism 3. luffing arm-tie 31. bearing pin 33. to receive before hinge 4. support 5. main crane arm 6. assembly pulley 7. foil support arm-tie 9. super lifting device 11. first conductor rope pulley 12. second sheave 13. journal stirrup 14. fixed pin shaft 15. bracket 16. clamp after arm-tie 8. foil support
Detailed description of the invention
In order to make those skilled in the art person understand the utility model scheme better, below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Please refer to Fig. 2, Fig. 2 provides by the utility model the structural representation of independent arm head.
As shown in the figure, in a kind of specific embodiment, the independent arm head that the utility model provides is formed primarily of parts such as link span 1, swivel mount 2, luffing mechanism, supports 4, it is for promoting the performance of main crane arm 5, directly or by fixing auxiliary link span can be connected to main crane arm 5 (framing member of weight is mainly born in the operation of elevator machinery lift heavy) minor details arm head portion, thus carry out crane job operating mode.
Link span 1, swivel mount 2 and support 4 are truss structure, and wherein link span 1 and swivel mount 2 are space truss, and support 4 is plane framework, and luffing mechanism is the adjustable luffing arm-tie 3 of connecting length.
The rear end of link span 1 is provided with four hinge-points, for connecting with the minor details arm of main crane arm 5, different from the end of traditional jib, and the front end of link span 1 is oblique prone angled end, and its sectional dimension diminishes gradually, rectangular triangle on lateral plan.
Swivel mount 2 is positioned at the below of link span 1 angled end, also triangular in shape on side, its the first hinge 21 is articulated with the lower end of link span 1 angled end, second hinge 22 is connected by luffing arm-tie 3 with the upper end of link span 1 angled end, tri-joint mechanism 23 is installed assembly pulley 6 and is formed lift heavy point, and link span 1, swivel mount 2, luffing arm-tie 3 form closed triangle together and regulate space.Like this, swivel mount 2 is just outer stretches in link span 1, and its lift heavy point outwards leans out certain distance relative to link span 1, and lift heavy point can be made away from the cylindrical shell of main crane arm 5, avoids both mutually to interfere, to increase operation height and the amplitude of independent arm head.
Particularly, the triangle of swivel mount 2 can be right-angled triangle or obtuse-angled triangle, and its second hinge 22 is right angle hinge or obtuse angle hinge.Certainly, when increasing sheave further and avoiding steel rope to interference with arm head, the triangle of swivel mount 2 also can be acute triangle.
Above-mentioned hinge only for stating general location that is hinged or that connect, not proper geometric point position, as long as in hinged or zone of reasonableness that the position that connects is around it, all the utility model object can be realized.
One end of luffing arm-tie 3 and the upper end of link span 1 angled end are hinged, second hinge 22 of the other end and swivel mount 2 is hinged, it is consisted of pinned connection primarily of two fork plate and single tine plate, two fork plate and single tine plate can be arranged and organize pin-and-hole more, when regulating its connecting length, first extract bearing pin 31, then the lap of splice of adjustment two fork plate and single tine plate, finally bearing pin 31 is inserted the pin-and-hole again aimed at, by regulating the length of luffing arm-tie 3, can regulate the angle of swivel mount 2 relative to link span 1, thus realize luffing function.
Support 4 is positioned at above link span 1, and is articulated with link span 1 rear end, and for supporting aerofoil profile stand connection, the ratio of its length and arm head entire length is greatly between 1:3 ~ 1:4.Because root and link span 1 are hinged, therefore support 4 upwardly-openable or pack up downwards, the mode of operation opened, it is to the front end inclination certain angle of link span 1.
Foil support attaching parts to be divided into before foil support arm-tie 8 after arm-tie 7 and foil support, the upper end of support 4 is provided with former and later two hinges, wherein, before foil support, one end of arm-tie 7 and the front hinge of support 4 are hinged, and the end (i.e. the upper end of angled end) of the other end and link span 1 is hinged; After foil support, one end of arm-tie 8 and the rear hinge of support 4 are hinged; the other end connects the front end of super lifting device 9; observe from the side; before support 4, foil support, arm-tie 7 is also triangular in shape with link span 1 top; owing to have employed large span design, surpass position connection rearward and higher, significantly can have strengthened the intensity of independent arm head and principal arm, lift heavy ability and stability; and support 4 connects the upper and lower of arm head, whole jib tip structure can be protected.
In addition, support 4 upper end is provided with the first conductor rope pulley 11, and the upper end of link span angled end is provided with the second sheave 12, with the assembly pulley 6 guiding hoisting rope (not shown) to cause jack point from link span 1 top and front end.
Please refer to Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 3 is structural representation when arm head independent shown in Fig. 2 is in travelling position; Fig. 4 is the partial enlarged drawing at A position in Fig. 3; Fig. 5 is the partial enlarged drawing at B position in Fig. 3; Fig. 6 is the partial enlarged drawing at C position in Fig. 3.
At travelling position, support 4, before foil support, arm-tie 7 folding rear entirety together with arm-tie after foil support 8 is placed on link span 1, support 4 and link span 1 are by being connected journal stirrup 13 and fixed pin shaft 14 is fixing, before foil support, arm-tie 7 is supported in the bracket 15 of link span 1, prevent from occurring danger in transport and installation process, it is hinged that rising on rear side of swivel mount 2 second hinge 22 and luffing arm-tie 3 upper end receives hinge 33, prevent from independent arm head transportation, occurring that superelevation is dangerous, in transportation, whole independent arm head transports separately, i.e. link span 1, swivel mount 2 and support 4 do not need dismounting.
Please refer to Fig. 7, Fig. 7 provides by the utility model the using state reference diagram of independent arm head.
During use, by independent arm head as a whole, lifting is arranged on main crane arm 5 head junction together; And the front end of super lifting device 9 is connected with arm-tie after foil support 8, pull out fixed pin shaft 14 and clamp 16 thereof, by stretching for arm-tie before foil support 7, finally reach mode of operation, whole installation process only needs once to lift and just can realize normal operation, because the length of luffing arm-tie 3 needs manual shift, therefore to adjust the angle of swivel mount 2, need to advance line operate at the main crane arm 5 of rise.
After using, need first slowly to be released by the steel rope that surpassed be connected with support 4, arm-tie 7 before adjustment foil support, puts it into bracket 15 and set pin axis hole place, penetrates fixed pin shaft 14 and clamp 16, finally dismantled by whole independent arm head again, complete use.
Fast Installation independence arm head when the utility model can realize increasing long compared with galianconism, realize the lift heavy of wind-powered electricity generation operating mode, it is arranged on minor details arm head portion, owing to being truss structure, brachium is short, it is little to take up room, windage is little, resistance to compression anti-bending strength is strong, and have overhanging rotation rack structure, arm head amplitude and height can be regulated, be designed with supporting structure simultaneously, super lifting device can be directly connected on arm head and improve lift heavy performance and stability, be special, fixing reliable, lightweight, the easy installation and removal truss-like amplitude-variable independently working arm head efficiently of a kind of wind-powered electricity generation.
Foregoing is only a kind of preferred version of the present utility model, is specifically not limited thereto, and can make pointed adjustment according to actual needs on this basis, thus obtain different embodiments.
First, version can be different, and as adopted different types of attachment, assembling mode or different arm head hoisting structures and the type of attachment with super lifting device, link span can arrange extension or transition segment, and arm head can adopt plate and shell structure etc.
Secondly, luffing version can be different, and above-described embodiment adopts arm-tie machinery luffing, and hydraulic ram also can be adopted to realize stepless luffing.
Moreover luffing position and stress form can be different, and the luffing mechanism in above-described embodiment, by pulling force, carries out luffing, also can be positioned over below swinging strut, be supported between link span and swivel mount, make luffing mechanism be stressed during luffing above swinging strut.
Because mode in the cards is more, just casehistory no longer one by one here.
Except above-mentioned truss-like independence arm head, the utility model also provides a kind of hoisting crane, and comprise gantry body, main crane arm and be located at the arm head mechanism of main crane arm minor details arm, described arm head mechanism is independent arm head mentioned above, all the other structures please refer to prior art, repeat no more herein.
Above independent arm head provided by the utility model and hoisting crane are described in detail.Apply specific case herein to set forth principle of the present utility model and embodiment, the explanation of above embodiment just understands core concept of the present utility model for helping.Should be understood that; for those skilled in the art; under the prerequisite not departing from the utility model principle, can also carry out some improvement and modification to the utility model, these improve and modify and also fall in the protection domain of the utility model claim.

Claims (12)

1. an independent arm head, is characterized in that, comprising:
Link span (1), for connecting main crane arm (5);
Swivel mount (2), hinged and stretch in described link span (1) outward, it is established lift heavy point;
Luffing mechanism, is located between described link span (1) and swivel mount (2), for regulating described swivel mount (2) relative to the angle of link span (1);
Support (4), itself and described link span (1) are hinged, for supporting aerofoil profile stand connection.
2. independent arm head according to claim 1, it is characterized in that, the front end of described link span (1) is angled end, described swivel mount (2) is articulated with the lower end of described angled end, and described luffing mechanism is located between the upper end of described angled end and swivel mount (2).
3. independent arm head according to claim 2, it is characterized in that, described swivel mount (2) is triangular in shape on side, its the first hinge (21) is articulated with the lower end of described angled end, second hinge (22) is connected by luffing mechanism with the upper end of described angled end, and tri-joint mechanism (23) is installed assembly pulley (6) and formed described lift heavy point.
4. independent arm head according to claim 3, is characterized in that, described triangle is right-angled triangle or obtuse-angled triangle, and its second hinge (22) is right angle hinge or obtuse angle hinge.
5. independent arm head according to claim 3, is characterized in that, described luffing mechanism is the adjustable luffing arm-tie (3) of connecting length or hydraulic ram.
6. the independent arm head according to any one of claim 2 to 5, is characterized in that, described support (4) upper end is provided with the first conductor rope pulley (11), and the upper end of described link span angled end is provided with the second sheave (12).
7. independent arm head according to claim 1, it is characterized in that, described support (4) is positioned at link span (1) top, and is articulated with described link span (1) rear end, in working order, its front end to described link span (1) tilts.
8. independent arm head according to claim 7, is characterized in that, described foil support attaching parts to comprise before foil support arm-tie (8) after arm-tie (7) and foil support; Before described foil support, one end of arm-tie (7) connects the upper end of described support (4), and the other end connects the end of described link span (1); After described foil support, one end of arm-tie (8) connects the upper end of described support (4), and the other end connects the front end of super lifting device (9).
9. independent arm head according to claim 8, it is characterized in that, at travelling position, before described support (4), foil support after arm-tie (7) and foil support arm-tie (8) folding together after entirety be placed on described link span (1).
10. independent arm head according to claim 5, is characterized in that, at travelling position, it is hinged that rising on rear side of second hinge (22) of described swivel mount and described luffing arm-tie (3) upper end receives hinge (33).
11. independent arm heads according to claim 9, it is characterized in that, described support (4) and link span (1) are by being connected journal stirrup (13) and fixed pin shaft (14) is fixing, and before described foil support, arm-tie (7) is supported in the bracket (15) of described link span (1).
12. 1 kinds of hoisting cranes, comprise gantry body, main crane arm and are located at the arm head mechanism of described main crane arm minor details arm, it is characterized in that, described arm head mechanism is the independent arm head described in any one of the claims 1 to 11.
CN201420611899.6U 2014-10-21 2014-10-21 A kind of independent arm head and hoisting crane Active CN204324760U (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104355245A (en) * 2014-10-21 2015-02-18 徐州重型机械有限公司 Independent arm head and crane
CN107337123A (en) * 2017-06-16 2017-11-10 徐州重型机械有限公司 Boom system and crane

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104355245A (en) * 2014-10-21 2015-02-18 徐州重型机械有限公司 Independent arm head and crane
CN104355245B (en) * 2014-10-21 2017-02-15 徐州重型机械有限公司 Independent arm head and crane
CN107337123A (en) * 2017-06-16 2017-11-10 徐州重型机械有限公司 Boom system and crane

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