CN106241629A - Folding arm lorry-mounted crane jib lubbing mechanism and folding arm lorry-mounted crane - Google Patents
Folding arm lorry-mounted crane jib lubbing mechanism and folding arm lorry-mounted crane Download PDFInfo
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- CN106241629A CN106241629A CN201510331126.1A CN201510331126A CN106241629A CN 106241629 A CN106241629 A CN 106241629A CN 201510331126 A CN201510331126 A CN 201510331126A CN 106241629 A CN106241629 A CN 106241629A
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- arm
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- hinged
- connecting rod
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Abstract
The present invention relates to a kind of folding arm lorry-mounted crane jib lubbing mechanism and folding arm lorry-mounted crane, wherein, folding arm lorry-mounted crane jib lubbing mechanism includes base, principal arm, basic arm, principal arm oil cylinder and basic arm oil cylinder, the two ends of described principal arm corresponding and described base and described basic arm respectively are hinged, described principal arm hydraulic oil cylinder driving connects described principal arm, described basic arm hydraulic oil cylinder driving connects described basic arm, wherein, described principal arm one end hinged with described basic arm is first end, described first end downwards and bends to the direction of described base, described principal arm one end hinged with described base is the second end, described the second end downwards and bends to the direction of described basic arm, the hinge point of described basic arm is wrapped in inner side by the first end of described principal arm.Present invention optimizes main arm structure and pin joint is arranged, make jib lubbing mechanism have bigger activity space.
Description
Technical field
The present invention relates to engineering machinery field, particularly relate to a kind of folding arm lorry-mounted crane luffing machine
Structure and folding arm lorry-mounted crane.
Background technology
Folding arm lorry-mounted crane is a kind of liter being realized goods by hydraulic lifting and telescopic system
Fall, revolution, the equipment of handling, it both can realize goods transport, can rise as crane again
Hang.Folding arm lorry-mounted crane upper frame part realizes hoisting function, and jib lubbing mechanism mainly realizes crane
Luffing action.
Folding arm lorry-mounted crane jib lubbing mechanism mainly by base, principal arm, basic arm, principal arm oil cylinder,
Basic arm oil cylinder and some connecting rods composition.Principal arm oil cylinder, basic arm oil cylinder and each parts form two
Quadric chain, realizes luffing by two amplitude oil cylinder (principal arm oil cylinder and basic arm oil cylinder)
Motion, passes through hinge between each parts.
In prior art, owing to the space of jib lubbing mechanism limits, principal arm is hinged with basic arm
It is not quite reasonable that point is arranged, basic arm activity space is little, and folding movement of being got on the bus, lift heavy load
Impact, the big structure of jib lubbing mechanism own vol is overweight, in the irrational feelings of pin joint location layout
Under condition, will cause that hinging pin shaft service load is excessive phenomenon of rupture occurs.
Summary of the invention
The purpose of the present invention is to propose to a kind of folding arm lorry-mounted crane jib lubbing mechanism and folding arm rises with car
Heavy-duty machine, it optimizes main arm structure and pin joint is arranged, makes jib lubbing mechanism have bigger activity
Space.
For achieving the above object, the invention provides a kind of folding arm lorry-mounted crane jib lubbing mechanism,
It includes base, principal arm, basic arm, principal arm oil cylinder and basic arm oil cylinder, the two of described principal arm
End corresponding and described base and described basic arm respectively is hinged, and described principal arm hydraulic oil cylinder driving connects institute
Stating principal arm, described basic arm hydraulic oil cylinder driving connects described basic arm, wherein, described principal arm and institute
Stating the hinged one end of basic arm is first end, and described first end is downwards and to described base
Direction bends, and described principal arm one end hinged with described base is the second end, described second end
Portion downwards and bends to the direction of described basic arm, the first end of described principal arm by described substantially
The hinge point of arm wraps in inner side.
One, preferably or in alternative embodiment, described principal arm is semienclosed box-structure, institute
State principal arm and include that the side plate of top board and both sides, described basic arm oil cylinder are arranged on the end of described principal arm
Portion.
One, preferably or in alternative embodiment, the both sides of the first end of described principal arm are provided with
The first end hinge of first connecting rod and second connecting rod, one end of described first connecting rod and described principal arm
Connecing, the other end of described first connecting rod is hinged with one end of described second connecting rod, and described second even
The other end of bar is hinged with described basic arm.
Preferably or in alternative embodiment, the first rotating shaft, the one of described first rotating shaft is also included one
Hold hinged with the pin joint of described second connecting rod with the described first connecting rod of described principal arm side, institute
State the other end of the first rotating shaft with the described first connecting rod of described principal arm opposite side with described second even
The pin joint of bar is hinged.
One preferably or in alternative embodiment, one end of described basic arm oil cylinder and described principal arm
The second end is hinged, and the other end of described basic arm oil cylinder is hinged with described first rotating shaft.
One, preferably or in alternative embodiment, described first connecting rod is high with the pin joint of described principal arm
Pin joint in described principal arm Yu described basic arm.
One, preferably or in alternative embodiment, the length of described first connecting rod is more than described second even
The length of bar.
One, preferably or in alternative embodiment, the second end of described principal arm is wrapped in by described base
Inner side.
One, preferably or in alternative embodiment, the both sides of the second end of described principal arm are provided with
Third connecting rod and fourth link, one end of described third connecting rod is hinged with described base, and described
The other end of three connecting rods is hinged with one end of described fourth link, the other end of described fourth link
Hinged with the second end of described principal arm.
Preferably or in alternative embodiment, the second rotating shaft, the one of described second rotating shaft is also included one
Hold hinged with the pin joint of described fourth link with the described third connecting rod of described principal arm side, institute
State the other end of the second rotating shaft with the described third connecting rod of described principal arm opposite side with the described 4th even
The pin joint of bar is hinged.
One, preferably or in alternative embodiment, one end of described principal arm oil cylinder is hinged with described base,
The other end of described principal arm oil cylinder is hinged with described second rotating shaft.
One, preferably or in alternative embodiment, described principal arm oil cylinder is provided with two.
One preferably or in alternative embodiment, the pin joint of described basic arm oil cylinder and described principal arm
Higher than the pin joint of described fourth link Yu described principal arm, and the most described principal arm and the described end
The pin joint of seat, described principal arm and the pin joint of described base are higher than described third connecting rod with described
The pin joint of base.
One, preferably or in alternative embodiment, the length of described third connecting rod is more than the described 4th even
The length of bar.
For achieving the above object, present invention also offers a kind of folding arm lorry-mounted crane, it includes
Folding arm lorry-mounted crane jib lubbing mechanism in any of the above-described embodiment.
Based on technique scheme, the present invention at least has the advantages that
The present invention, by optimizing the structure of design principal arm, forms the curved month type structure of two hinged end bendings,
And the hinge point of basic arm is wrapped in inner side by principal arm, jib lubbing mechanism is made to have bigger activity space,
On the basis of meeting car load holding function, make two luffings that base, principal arm, basic arm are formed
Mechanism can have preferably pin joint layout, pin joint uniform force, and compact conformation is slim and graceful.
Accompanying drawing explanation
Accompanying drawing described herein is used for providing a further understanding of the present invention, constitutes the application
A part, the schematic description and description of the present invention is used for explaining the present invention, not structure
Become inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 measures intention for the axle of the jib lubbing mechanism that the present invention provides；
The schematic front view of the jib lubbing mechanism that Fig. 2 provides for the present invention；
The schematic top plan view of the jib lubbing mechanism that Fig. 3 provides for the present invention；
The principal arm of the jib lubbing mechanism that Fig. 4 provides for the present invention, basic arm maximum change angle schematic diagram；
The basic arm of the jib lubbing mechanism that Fig. 5 provides for the present invention folds schematic diagram；
The principal arm of the jib lubbing mechanism that Fig. 6 provides for the present invention and basic arm oil cylinder scheme of installation.
Label in accompanying drawing:
1-base；2-principal arm；3-basic arm；4-principal arm oil cylinder；5-basic arm oil cylinder；6-first is even
Bar；7-second connecting rod；8-third connecting rod；9-fourth link；10-the first rotating shaft；11-the second rotating shaft.
A, B, C, D, E, F, G, H, I, J are parts pin joint.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in embodiment is carried out clearly
Chu, it is fully described by.Obviously, described embodiment is only a part of embodiment of the present invention,
Rather than whole embodiments.Based on embodiments of the invention, those of ordinary skill in the art are not having
Have and make the every other embodiment obtained under creative work premise, broadly fall into present invention protection
Scope.
In describing the invention, it is to be understood that term " " center ", " longitudinally ", " laterally ",
"front", "rear", "left", "right", " vertically ", " level ", " top ", " end ", " interior ", " outward "
Deng instruction orientation or position relationship be based on orientation shown in the drawings or position relationship, be only for
It is easy to describe the present invention and simplifying describe rather than instruction or the device of hint indication or element
Must have specific orientation, with specific azimuth configuration and operation, therefore it is not intended that right
The restriction of scope.
As it is shown in figure 1, the schematic reality of the folding arm lorry-mounted crane jib lubbing mechanism provided for the present invention
Executing example, in this illustrative examples, folding arm lorry-mounted crane jib lubbing mechanism includes base 1, master
Arm 2, basic arm 3, principal arm oil cylinder 4 and basic arm oil cylinder 5, one end of principal arm 2 and base 1
Hinged, pin joint is B, and the other end of principal arm 2 is hinged with basic arm 3, pin joint be I (as
Shown in Fig. 4), principal arm oil cylinder 4 drive connection principal arm 2, basic arm oil cylinder 5 drive connection base
This arm 3, the flexible action of rising and falling realizing principal arm 2 and attachment structure thereof of principal arm oil cylinder 4；Basic arm
The flexible action of rising and falling realizing basic arm 3 and attachment structure thereof of oil cylinder 5.Principal arm oil cylinder 4 is with basic
The combinative movement of arm oil cylinder 5 the two amplitude oil cylinder, can realize different lifting attitudes, Fig. 2 institute
It is shown as one of which lifting attitude.Principal arm 2 one end hinged with basic arm 3 is first end,
First end downwards and bends to the direction of base 1, and principal arm 2 one end hinged with base 1 is
The second end, the second end downwards and bends to the direction of basic arm 3, the first end of principal arm 2
The hinge point of basic arm 3 is wrapped in inner side by portion.
In above-mentioned illustrative examples, the first end of principal arm 2 is downwards and to the direction of base 1
Bending, the second end of principal arm 2 downwards and bends to the direction of basic arm 3, i.e. principal arm 2
First end and the second end bend in opposite directions, make principal arm 2 form the structure being similar to curved month type, main
The pin joint of arm 2 is arranged in curved end, and the pin joint of basic arm 3 is arranged in end, accordingly, it is capable to
Enough make basic arm 3 and principal arm 2 can achieve over 180 ° relatively rotate (as shown in Figure 4), have
Bigger activity space, thus expand the luffing space of folding arm lorry-mounted crane, enhance luffing
The motility of action；This design simultaneously is beneficial to the layout of pin joint, can realize the preferable cloth of pin joint
Office, advantageously reduces the load of hinging pin shaft.
As shown in Figure 6, in the illustrative examples of above-mentioned folding arm lorry-mounted crane jib lubbing mechanism,
The principal arm 2 of curved month type can use semienclosed box-structure, principal arm 2 to include top board and two
The side plate of side, basic arm oil cylinder 5 is arranged on the bottom of principal arm 2.As it is shown in figure 5, basic arm
Under 3 states folded completely, basic arm oil cylinder 5 shrinks the semiclosed inner chamber being positioned at curved month type principal arm 2
In, organization distribution is compact.
As shown in Figure 1, Figure 3, on the basis of above-mentioned illustrative examples, base 1 will be main
The second end of arm 2 wraps in inner side, i.e. base 1, at pin joint B, principal arm 2 is wrapped in inner side, with
Time principal arm 2 at pin joint I, basic arm 3 wrapped in inner side, be conducive to reducing principal arm 2, basic arm 3
Overall dimensions, the most beneficially stress of arm, form stable load carrier.
As it is shown in figure 1, more flexible in order to make principal arm 2 and the connection of basic arm 3 rotate, turn
Dynamic stress is steady, and rotational angle is big, and the both sides of the first end of principal arm 2 are provided with first even
Bar 6 and second connecting rod 7, the length of first connecting rod 6 is more than the length of second connecting rod 7.First
One end of connecting rod 6 is hinged with the first end of principal arm 2, and pin joint is H, first connecting rod 6
The other end is hinged with one end of second connecting rod 7, and pin joint is J, the other end of second connecting rod 7
Hinged with basic arm 3, pin joint is G.
Further, the first rotating shaft 10, one end of the first rotating shaft 10 and principal arm 2 one are also included
The first connecting rod 6 of side is hinged with the pin joint J of second connecting rod 7, the other end of the first rotating shaft 10
Hinged with the pin joint J of second connecting rod 7 with the first connecting rod 6 of principal arm 2 opposite side.Basic arm
One end of oil cylinder 5 is hinged with the second end of principal arm 2, and pin joint is F, basic arm oil cylinder 5
The other end and the first rotating shaft 10 hinged.First connecting rod 6 is higher than with the pin joint H of principal arm 2
Principal arm 2 and the pin joint I (as shown in Figure 4) of basic arm 3.
As it is shown in figure 1, more flexible in order to make principal arm 2 and the connection of base 1 rotate, rotate
Stress is steady, and rotational angle is big, and the both sides of the second end of principal arm 2 are provided with third connecting rod
8 and fourth link 9, the length of third connecting rod 8 is more than the length of fourth link 9.Third connecting rod
One end of 8 is hinged with base 1, and pin joint is A, and the other end of third connecting rod 8 and the 4th is even
One end of bar 9 is hinged, and pin joint is C, the other end of fourth link 9 and the second of principal arm 2
End is hinged, and pin joint is D.
Further, the second rotating shaft 11, one end of the second rotating shaft 11 and principal arm 2 one are also included
The third connecting rod 8 of side is hinged with the pin joint C of fourth link 9, another of the second rotating shaft 11
Hold hinged with the pin joint of fourth link 9 with the third connecting rod 8 of principal arm 2 opposite side.Principal arm oil
One end of cylinder 4 is hinged with base 1, and pin joint is E, the other end of principal arm oil cylinder 4 and second
Rotating shaft 11 is hinged.
Alternatively, basic arm oil cylinder 5 and the pin joint F of principal arm 2 are higher than fourth link 9 and master
The pin joint D of arm 2, and the pin joint B of also higher than principal arm 2 and base 1, and principal arm 2 with
The pin joint B of base 1 is higher than the pin joint A of third connecting rod 8 with base 1.
In above-described embodiment, base 1, principal arm 2, principal arm oil cylinder 4, third connecting rod 8 and the 4th connect
The four-link luffing of bar 9 composition is the first jib lubbing mechanism.Principal arm 2, basic arm 3, basic arm
The four-link luffing of oil cylinder 5, first connecting rod 6 and second connecting rod 7 composition is the second jib lubbing mechanism.
Wherein, first connecting rod 6 and second connecting rod 7 mounted in pairs are in principal arm 2 and basic arm 3 hinge point
Both sides；Third connecting rod 8 and fourth link 9 mounted in pairs are in base 1 and principal arm 2 hinge point
Both sides.
In order to improve the jacking capacity of principal arm oil cylinder 4 further, principal arm oil cylinder 4 is provided with two,
When the first jib lubbing mechanism action, two principal arm oil cylinders 4 lift simultaneously and realize luffing action, it is possible to
Bigger jacking capacity is provided for lifting jib.
In sum, the present invention is designed by optimization, and principal arm 2 is designed to curved month type structure, principal arm 2
The hinge point of basic arm 3 wraps in inner side, basic arm oil cylinder 5 is placed on curved month type principal arm 2
In semiclosed inner chamber, it is achieved the optimal layout of pin joint；Use base 1 by the articulated section of principal arm 2
Position wraps in inner side, the design form of double principal arm oil cylinder 4 lifting, is conducive to reducing principal arm 2, basic arm
The overall dimensions of 3, forms stable load carrier.By above-mentioned design, form a nested structure tight
Gather, merrily and lightheartedly, the rationally distributed jib lubbing mechanism of pin joint, solve arm-folding crane jib lubbing mechanism from
Health amasss that big structure is overweight, the problem of bearing pin fracture.
Present invention also offers the illustrative examples of a kind of folding arm lorry-mounted crane, schematic at this
In embodiment, folding arm lorry-mounted crane includes that the folding arm lorry-mounted crane in any of the above-described embodiment becomes
Width mechanism.
In describing the invention, it is to be understood that use " first ", " second ", " the 3rd ",
Words such as " the 4 " limits parts, it is only for be easy to distinguish above-mentioned parts,
As not having Stated otherwise, above-mentioned word does not has particular meaning, therefore it is not intended that to this
The restriction of bright protection domain.
Finally should be noted that: above example only in order to technical scheme to be described and
Non-to its restriction；Although the present invention being described in detail with reference to preferred embodiment, affiliated
The those of ordinary skill in field is it is understood that still can enter the detailed description of the invention of the present invention
Row is revised or portion of techniques feature is carried out equivalent；Without deviating from technical solution of the present invention
Spirit, it all should be contained in the middle of the technical scheme scope that the present invention is claimed.
Claims (15)
1. a folding arm lorry-mounted crane jib lubbing mechanism, including base (1), principal arm (2), base
This arm (3), principal arm oil cylinder (4) and basic arm oil cylinder (5), the two of described principal arm (2)
End corresponding and described base (1) and described basic arm (3) respectively is hinged, described principal arm oil cylinder
(4) principal arm described in drive connection (2), base described in described basic arm oil cylinder (5) drive connection
This arm (3), it is characterised in that: described principal arm (2) and described basic arm (3) hinged one
End is first end, and described first end downwards and bends to the direction of described base (1), institute
The one end stating principal arm (2) hinged with described base (1) is the second end, described the second end
Bending downwards and to the direction of described basic arm (3), the first end of described principal arm (2) will
The hinge point of described basic arm (3) wraps in inner side.
2. folding arm lorry-mounted crane jib lubbing mechanism as claimed in claim 1, it is characterised in that: institute
Stating principal arm (2) is semienclosed box-structure, and described principal arm (2) includes top board and both sides
Side plate, described basic arm oil cylinder (5) is arranged on the bottom of described principal arm (2).
3. folding arm lorry-mounted crane jib lubbing mechanism as claimed in claim 1, it is characterised in that:
The both sides of the first end of described principal arm (2) are provided with first connecting rod (6) and second connecting rod
(7), one end of described first connecting rod (6) is hinged with the first end of described principal arm (2),
The other end of described first connecting rod (6) is hinged with one end of described second connecting rod (7), described
The other end of second connecting rod (7) is hinged with described basic arm (3).
4. folding arm lorry-mounted crane jib lubbing mechanism as claimed in claim 3, it is characterised in that:
Also include the first rotating shaft (10), one end of described first rotating shaft (10) and described principal arm (2)
The described first connecting rod (6) of side is hinged with the pin joint of described second connecting rod (7), described
The other end of the first rotating shaft (10) and the described first connecting rod (6) of described principal arm (2) opposite side
Hinged with the pin joint of described second connecting rod (7).
5. folding arm lorry-mounted crane jib lubbing mechanism as claimed in claim 4, it is characterised in that:
One end of described basic arm oil cylinder (5) is hinged with the second end of described principal arm (2), described
The other end of basic arm oil cylinder (5) is hinged with described first rotating shaft (10).
6. folding arm lorry-mounted crane jib lubbing mechanism as claimed in claim 3, it is characterised in that:
Described first connecting rod (6) is higher than described principal arm (2) and institute with the pin joint of described principal arm (2)
State the pin joint of basic arm (3).
7. folding arm lorry-mounted crane jib lubbing mechanism as claimed in claim 3, it is characterised in that:
The length of described first connecting rod (6) is more than the length of described second connecting rod (7).
8. folding arm lorry-mounted crane jib lubbing mechanism as claimed in claim 1, it is characterised in that:
The second end of described principal arm (2) is wrapped in inner side by described base (1).
9. folding arm lorry-mounted crane jib lubbing mechanism as claimed in claim 1, it is characterised in that:
The both sides of the second end of described principal arm (2) are provided with third connecting rod (8) and fourth link
(9), one end of described third connecting rod (8) is hinged with described base (1), and the described 3rd even
The other end of bar (8) is hinged with one end of described fourth link (9), described fourth link (9)
The other end hinged with the second end of described principal arm (2).
10. folding arm lorry-mounted crane jib lubbing mechanism as claimed in claim 9, it is characterised in that:
Also include the second rotating shaft (11), one end of described second rotating shaft (11) and described principal arm (2)
The described third connecting rod (8) of side is hinged with the pin joint of described fourth link (9), described
The other end of the second rotating shaft (11) and the described third connecting rod (8) of described principal arm (2) opposite side
Hinged with the pin joint of described fourth link (9).
11. folding arm lorry-mounted crane jib lubbing mechanisms as claimed in claim 10, it is characterised in that:
One end of described principal arm oil cylinder (4) is hinged with described base (1), described principal arm oil cylinder (4)
The other end hinged with described second rotating shaft (11).
12. folding arm lorry-mounted crane jib lubbing mechanisms as claimed in claim 11, it is characterised in that:
Described principal arm oil cylinder (4) is provided with two.
13. folding arm lorry-mounted crane jib lubbing mechanisms as claimed in claim 9, it is characterised in that:
Described basic arm oil cylinder (5) is higher than described fourth link (9) with the pin joint of described principal arm (2)
With the pin joint of described principal arm (2), and the most described principal arm (2) and described base (1)
Pin joint, the pin joint of described principal arm (2) and described base (1) is higher than the described 3rd even
Bar (8) and the pin joint of described base (1).
14. folding arm lorry-mounted crane jib lubbing mechanisms as claimed in claim 9, it is characterised in that:
The length of described third connecting rod (8) is more than the length of described fourth link (9).
15. 1 kinds of folding arm lorry-mounted cranes, it is characterised in that: include that claim 1-14 such as is appointed
One described folding arm lorry-mounted crane jib lubbing mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510331126.1A CN106241629A (en) | 2015-06-15 | 2015-06-15 | Folding arm lorry-mounted crane jib lubbing mechanism and folding arm lorry-mounted crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510331126.1A CN106241629A (en) | 2015-06-15 | 2015-06-15 | Folding arm lorry-mounted crane jib lubbing mechanism and folding arm lorry-mounted crane |
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| Publication Number | Publication Date |
|---|---|
| CN106241629A true CN106241629A (en) | 2016-12-21 |
Family
ID=57626549
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510331126.1A Pending CN106241629A (en) | 2015-06-15 | 2015-06-15 | Folding arm lorry-mounted crane jib lubbing mechanism and folding arm lorry-mounted crane |
Country Status (1)
| Country | Link |
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| CN (1) | CN106241629A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107512670A (en) * | 2017-10-18 | 2017-12-26 | 徐工集团工程机械有限公司 | One kind is with car arm-folding crane jib lubbing mechanism and with car arm-folding crane |
| CN108275587A (en) * | 2018-03-26 | 2018-07-13 | 浙江三装备有限公司 | Super-starting balance weight luffing device and crane |
| CN109699325A (en) * | 2019-01-08 | 2019-05-03 | 徐州中森智能装备有限公司 | A kind of folding arm |
| CN111573532A (en) * | 2019-02-19 | 2020-08-25 | 利勃海尔爱茵根有限公司 | Folding suspended counterweight guiding device for crane |
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| DE2535948A1 (en) * | 1974-12-20 | 1976-07-01 | Iowa Mold Tooling Co | Hydraulic loading crane - has jib top section folding against main one for stowage inside a frame |
| EP0066567A2 (en) * | 1981-06-01 | 1982-12-08 | Firma PALFINGER | Crane mountable on a truck |
| CN201458603U (en) * | 2009-08-12 | 2010-05-12 | 中国船舶重工集团公司第七一三研究所 | Folding mechanism of lifting arm |
| CN102616674A (en) * | 2012-03-28 | 2012-08-01 | 李军希 | Boom with folding structure |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2535948A1 (en) * | 1974-12-20 | 1976-07-01 | Iowa Mold Tooling Co | Hydraulic loading crane - has jib top section folding against main one for stowage inside a frame |
| EP0066567A2 (en) * | 1981-06-01 | 1982-12-08 | Firma PALFINGER | Crane mountable on a truck |
| CN201458603U (en) * | 2009-08-12 | 2010-05-12 | 中国船舶重工集团公司第七一三研究所 | Folding mechanism of lifting arm |
| CN102616674A (en) * | 2012-03-28 | 2012-08-01 | 李军希 | Boom with folding structure |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107512670A (en) * | 2017-10-18 | 2017-12-26 | 徐工集团工程机械有限公司 | One kind is with car arm-folding crane jib lubbing mechanism and with car arm-folding crane |
| CN108275587A (en) * | 2018-03-26 | 2018-07-13 | 浙江三装备有限公司 | Super-starting balance weight luffing device and crane |
| CN109699325A (en) * | 2019-01-08 | 2019-05-03 | 徐州中森智能装备有限公司 | A kind of folding arm |
| CN109699325B (en) * | 2019-01-08 | 2024-08-13 | 徐州中森智能装备有限公司 | Folding arm |
| CN111573532A (en) * | 2019-02-19 | 2020-08-25 | 利勃海尔爱茵根有限公司 | Folding suspended counterweight guiding device for crane |
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Application publication date: 20161221 |
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| RJ01 | Rejection of invention patent application after publication |