CN103058075A - Retrieving method for fly jib of crane and retrieving apparatus for fly jib - Google Patents

Retrieving method for fly jib of crane and retrieving apparatus for fly jib Download PDF

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Publication number
CN103058075A
CN103058075A CN2012105746673A CN201210574667A CN103058075A CN 103058075 A CN103058075 A CN 103058075A CN 2012105746673 A CN2012105746673 A CN 2012105746673A CN 201210574667 A CN201210574667 A CN 201210574667A CN 103058075 A CN103058075 A CN 103058075A
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China
Prior art keywords
auxiliary
joint
flexible axle
principal arm
execution unit
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CN2012105746673A
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Chinese (zh)
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CN103058075B (en
Inventor
任汨
石川
郭永红
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三一重工股份有限公司
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Priority to CN201210574667.3A priority Critical patent/CN103058075B/en
Publication of CN103058075A publication Critical patent/CN103058075A/en
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Publication of CN103058075B publication Critical patent/CN103058075B/en

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Abstract

The invention provides a retrieving method for a fly jib of a crane and a retrieving apparatus for the fly jib. The retrieving method for the fly jib comprises the following steps: hinging a first joint on the fly jib with a first supporting plate on a main jib and then dismounting a fork shaft through which a fork of the fly jib is hinged with the main jib, wherein the fly jib is capable of rotating around an articulated shaft of the first joint and the first supporting plate in a plane in which the main jib is located; connecting a second joint on the fly jib to an executive component on the crane through a flexible shaft; and driving the executive component to move so as to allow the flexible shaft to pull the fly jib to rotate around the articulated shaft of the first joint and the first supporting plate, thereby retrieving the fly jib to a second supporting plate on the main jib and allowing the fly jib to be parallel to the main jib. The invention provides the method and the apparatus for retrieving the fly jib through motion of the executive component on the crane and driving of the flexible shaft; the apparatus has a simple structure, is easy to install and convenient to operate and enables manpower to be saved; and compared to other retrieving method for fly jibs, the method provided by the invention enables integral cost and maintenance cost for equipment to be reduced and market competitiveness of the equipment to be improved.

Description

The auxiliary recovery method of hoisting crane and auxiliary regenerative apparatus
Technical field
The present invention relates to engineering machinery field, in particular to a kind of auxiliary recovery method and a kind of auxiliary regenerative apparatus of hoisting crane.
Background technology
The boom system of hoisting crane comprises principal arm and auxiliary at present.Arranging of auxiliary can compensate the principal arm operation height, enlarges the principal arm scope of work.The assembly connection of auxiliary and principal arm, usually hinged by connecing fork shaft by four four nipple orifice that connect fork and principal arm head of auxiliary afterbody, when auxiliary was not worked, auxiliary drew the side at principal arm in, when the needs auxiliary was worked, auxiliary launched to be installed in the arm head of principal arm.
When auxiliary is installed, normally making first near-end connect fork aligns with the proximal joint hole, insert near-end and connect fork shaft, making auxiliary connect fork shaft along near-end by artificial pulling again swings, Rotate 180 ° to far-end connects fork and after aliging in the distal joint hole, insert far-end and connect fork shaft, realize that then auxiliary is in the location of principal arm head.It is opposite to draw the auxiliary process in.In auxiliary gathering process, because manufacturing errors, auxiliary is difficult to rise to smoothly on the stay bearing plate of principal arm side, and said process needs the swing of artificial effort pulling auxiliary or by telescopic oil cylinder auxiliary retracted.
Patent documentation " CN201110239929 " discloses a kind of hoisting crane and auxiliary installation method thereof, this inventive method comprises linear driving mechanism and rod hinge connection structure, the rod hinge connection structure can spur the recovery of auxiliary, the actuating device of this invention is the execution unit that is independent of crane arm, actuating device is mainly screw structure, oil cylinder, cylinder etc., and must be fixed on the side of principal arm.
Patent documentation " CN200520071398 " discloses a kind of crane subsidiary arm retractable electrohydraulic control method, namely reclaims by hydraulic ram pulling auxiliary.
The problem that correlation technique exists is:
1. the driver train in the auxiliary regenerative apparatus in the correlation technique is the drive configuration that is independent of hoisting crane, such as oil cylinder, cylinder etc., causes equipment cost to increase, and improves simultaneously the rate of breakdown of equipment, increases the maintenance of equipment cost, reduces the market competitiveness;
2. articulated structure connects the flexible axle structure than other, and alerting ability is not enough, may cause the faults such as stuck when auxiliary reclaims, and causes auxiliary to reclaim difficulty.
Summary of the invention
For solving the problems of the technologies described above or one of at least, the invention provides a kind of auxiliary recovery method of hoisting crane, can drive auxiliary and reclaim by the action of the execution unit on the hoisting crane, can save manpower, reduce equipment complete machine cost and maintenance cost.
In view of this, the invention provides a kind of auxiliary recovery method of hoisting crane, comprising:
Step 102, the first joint on the auxiliary and the first stay bearing plate on the principal arm is hinged, lay down subsequently the fork shaft that connects that auxiliary and principal arm be hinged, described auxiliary can rotate by the jointed shaft around described the first joint and described the first stay bearing plate in the plane at described principal arm place;
Step 103 is by the second joint on the flexible axle connection auxiliary and the execution unit on the hoisting crane;
Step 104, drive described execution unit action, make described flexible axle spur described auxiliary and rotate around the jointed shaft of described the first joint and described the first stay bearing plate, described auxiliary is recycled on the second stay bearing plate on the principal arm, make described auxiliary and the parallel placement of described principal arm.
In this technical scheme, can and drive auxiliary by flexible axle by the execution unit on hoisting crane action and reclaim, simple in structure, install easily, and easy and simple to handle, can save manpower, and reduce complete machine cost and the maintenance cost of equipment, improve the market competitiveness of equipment.
In technique scheme, preferably, also comprised before described step 102: step 101 turns to the position that the hinge hole on described the first joint overlaps with hinge hole on described the first stay bearing plate with described auxiliary around the described fork shaft that connects first.
In this technical scheme, can be manually comparatively easily the hinge hole on the first joint be alignd with hinge hole on the first stay bearing plate, then be connected and fixed by jointed shaft.
In technique scheme, preferably, in step 103, described flexible axle is walked around the guide piece that is arranged on the described principal arm, and an end connects described the second joint, and the other end connects described execution unit.
Flexible axle is walked around guide piece and is cooperated with guide piece, can change by guide piece the direction of transfer of the power on the flexible axle, has enlarged the range of choice of execution unit, can improve the convenience that auxiliary reclaims by choosing different execution units.
In technique scheme, preferably, in step 104, described execution unit is the second section arm of principal arm, and described execution unit course of action is: the second section arm by principal arm stretches out, and makes described flexible axle spur described auxiliary and rises on described the second stay bearing plate.
Second section arm driving by principal arm replaces independently drive source, can reduce equipment complete machine cost, rate of occurrence of equipment failure and maintenance cost, improves the market competitiveness of equipment.
In technique scheme, preferably, in step 104, described execution unit is elevator, and described execution unit course of action is: reclaim flexible axle by described elevator, make described flexible axle spur described auxiliary and rise on the second stay bearing plate.
Replace independently drive source by the elevator driving, can reduce equipment complete machine cost, improve the equipment Market competitive power.
In technique scheme, preferably, described guide piece and described the second joint are positioned at same plane.
Guide piece and the second joint are positioned at same plane, and auxiliary reclaims flexibly, can reduce the friction force between flexible axle and guide piece, prolong parts service life.
In technique scheme, preferably, described guide piece is leading sheave, and described flexible axle is steel rope, iron wire, iron chains or nylon rope.
The structural strength of steel rope, iron wire, iron chains or nylon rope is high, long service life, and resistance to corrosion is strong, and buying is easy, cost is low, can reduce the device fabrication cost, saves enterprise's spending.
The present invention also provides a kind of auxiliary regenerative apparatus, comprises flexible axle, and described flexible axle one end is connected with the second joint on the described auxiliary, and the other end is connected with execution unit on the hoisting crane.
This auxiliary regenerative apparatus is simple in structure, easy to operate, cost of manufacture is low, can cooperate with execution unit by flexible axle auxiliary is reclaimed, need not independently drive source, reduced the equipment failure rate that brings because drive source independently is set, reduce the maintenance cost of equipment, can make the cost of total car, and then improved the market competitiveness of equipment.
In technique scheme, preferably, the auxiliary regenerative apparatus also comprises the guide piece that is arranged on the principal arm, and described flexible axle is walked around described guide piece, and an end is connected with described the second joint, and the other end is connected with described execution unit.
Guide piece is simple in structure, and making is easy, cost is low, and the alerting ability that cooperates with flexible axle is good; Flexible axle is walked around guide piece and is cooperated with guide piece, can change by guide piece the direction of transfer of the power on the flexible axle, has enlarged the range of choice of execution unit, can improve the convenience that auxiliary reclaims by choosing different execution units.
In technique scheme, preferably, described guide piece is leading sheave, and described leading sheave and described the second joint are positioned at same plane; Described execution unit is second section arm or the 3rd joint arm of described principal arm or the 4th joint arm or the elevator of described principal arm of described principal arm; Described flexible axle is steel rope, iron wire, iron chains or nylon rope.
Guide piece and the second joint are positioned at same plane, and auxiliary reclaims flexibly, can reduce the friction force between flexible axle and guide piece, prolong parts service life; Replace independently drive source by the second section arm of elevator or principal arm or the 3rd the 4th joint arm driving that saves arm or principal arm of principal arm, can reduce device fabrication cost, rate of occurrence of equipment failure and maintenance of equipment cost, improve the market competitiveness; The structural strength of steel rope, iron wire, iron chains or nylon rope is high, long service life, and resistance to corrosion is strong, and buying is easy, cost is low, can reduce the device fabrication cost, saves enterprise's spending.
In sum, the auxiliary recovery method of hoisting crane provided by the invention can and drive auxiliary by flexible axle by the action of the execution unit on the hoisting crane and reclaim, simple in structure, install easily, and easy and simple to handle, can save manpower, and manufacturing cost and the maintenance of equipment cost of reduction equipment, the share of market of raising equipment increases enterprise income.
The auxiliary recovery method of hoisting crane provided by the invention can also be applied in the middle of other the mechanical equipment, can't be exhaustive at this, repeat no more, but its application all should be within protection scope of the present invention.
Description of drawings
Fig. 1 is the structural representation of auxiliary regenerative apparatus according to an embodiment of the invention;
Fig. 2 is A section structure for amplifying scheme drawing embodiment illustrated in fig. 1;
Fig. 3 is the structural representation of auxiliary regenerative apparatus according to another embodiment of the present invention;
Fig. 4 is the diagram of circuit of crane subsidiary arm recovery method according to an embodiment of the invention;
Fig. 5 is the diagram of circuit of crane subsidiary arm recovery method according to another embodiment of the present invention.
Wherein, the corresponding relation between Reference numeral and the component names is among Fig. 1 to Fig. 3:
11 auxiliarys, 112 first joints, 114 second joints, 12 principal arms, 122 first stay bearing plates, 123 second stay bearing plates, 124 guide piecees, 126 second section arms, 128 auxiliary peripheral boards 13 connect fork shaft 14 flexible axles.
The specific embodiment
In order more clearly to understand above-mentioned purpose of the present invention, feature and advantage, below in conjunction with the drawings and specific embodiments the present invention is further described in detail.Need to prove that in the situation of not conflicting, the application's embodiment and the feature among the embodiment can make up mutually.
A lot of details have been set forth in the following description so that fully understand the present invention; but; the present invention can also adopt other to be different from mode described here and implement, and therefore, protection scope of the present invention is not subjected to the restriction of following public specific embodiment.
The auxiliary recovery method of hoisting crane provided by the invention as shown in Figure 4, comprising:
Step 102, the first joint 112 on the auxiliary 11 is hinged with the first stay bearing plate 122 on the principal arm 12, that lays down subsequently that auxiliary 11 and principal arm 12 be hinged connects fork shaft 13, auxiliary 11 can be in the plane at principal arm 12 places around the jointed shaft rotation of the first joint 112 and the first stay bearing plate 122;
Step 103 connects on the auxiliarys execution unit on the second joint 114 of 11 and the hoisting crane by flexible axle 14;
Step 104 drives the execution unit action, and flexible axle 14 pulling auxiliarys 11 are rotated around the jointed shaft of the first joint 112 and the first stay bearing plate 122, auxiliary 11 is recycled on the second stay bearing plate 123 on the principal arm 12, makes auxiliary 11 and principal arm 12 parallel placements.
Certainly, auxiliary 11 rises on the second stay bearing plate 123, auxiliary 11 also can with the principal arm slant setting, these variations all do not break away from design philosophy of the present invention, belong to the protection domain of this patent.
In this technical scheme, can and drive auxiliary by flexible axle by the execution unit on hoisting crane action and reclaim, simple in structure, install easily, and easy and simple to handle, can save manpower, and reduce complete machine cost and the maintenance cost of equipment, improve the equipment Market competitive power.
Preferably, as shown in Figure 5, also comprised before step 102: step 101 turns to auxiliary 11 solderless wrapped connection fork shafts 13 first the position that the hinge hole on the first joint 112 overlaps with hinge hole on the first stay bearing plate 122.
In this technical scheme, can drive more easily by other engine installations that comprise manpower auxiliary 11 solderless wrapped connection fork shafts 13 and turn to the position that the hinge hole on the first joint 112 overlaps with hinge hole on the first stay bearing plate 122; Also can utilize elevator to reclaim flexible axle drives auxiliary 11 solderless wrapped connection fork shafts 13 and turns to the position that the hinge hole on the first joint 112 overlaps with hinge hole on the first stay bearing plate 122; These variations all do not break away from design philosophy of the present invention, belong to the protection domain of this patent.
In this technical scheme, can utilize and artificial comparatively easily the hinge hole on the first joint be alignd with hinge hole on the first stay bearing plate, then be connected and fixed by jointed shaft.
Preferably, such as Fig. 1 to Fig. 3, shown in Figure 5, in step 103, flexible axle 14 is walked around guide piece 124, one ends that are arranged on the principal arm 12 and is connected the second joint 114, and the other end connects execution unit.
Wherein, guide piece 124 is fixedly mounted on the principal arm by auxiliary peripheral board 128.
Flexible axle is walked around guide piece and is cooperated with guide piece, can change by guide piece the direction of transfer of the power on the flexible axle, has enlarged the range of choice of execution unit, can improve the convenience that auxiliary reclaims by choosing different execution units.
Preferably, as shown in Figure 1 and Figure 2, in step 104, execution unit is the second section arm 126 of principal arm 12, the execution unit course of action is: the second section arm 126 by principal arm 12 stretches out, flexible axle 14 pulling auxiliarys 11 are recycled on the second stay bearing plate 123, and guide piece 124 is arranged on principal arm 12 over against a side of auxiliary 11 by auxiliary peripheral board 128.
Certainly, also can be that the 3rd joint arm, the actuating device in the 4th joint arm or the principal arm of principal arm is as execution unit etc.; These variations all do not break away from design philosophy of the present invention, belong to the protection domain of this patent.
Second section arm driving by principal arm replaces independently drive source, can reduce device fabrication cost, rate of occurrence of equipment failure and maintenance of equipment cost, enlarges the share of market of equipment, improves the performance of enterprises.
Certainly, as shown in Figure 3, in step 104, execution unit is elevator, and the execution unit course of action is: reclaim flexible axle 14 by elevator, flexible axle 14 pulling auxiliarys 11 are risen on the second stay bearing plate 123, guide piece 124 is arranged on the upper surface of principal arm 12.
Replace independently drive source by the elevator driving, can reduce equipment complete machine cost, rate of occurrence of equipment failure and maintenance of equipment cost, improve the equipment Market competitive power.
Certainly, also can be miscellaneous part fixing on rope on the elevator or the rope as execution unit etc., these all can reach purpose of the present invention, and its aim does not all break away from design philosophy of the present invention, belongs to the protection domain of this patent.
Preferably, as shown in Figure 3, guide piece 124 and the second joint 114 are positioned at same plane.
Guide piece and the second joint are positioned at same plane, and auxiliary reclaims flexibly, can reduce the friction force between flexible axle and guide piece, prolong parts service life.
Preferably, guide piece 124 is leading sheave, and flexible axle 14 is steel rope, iron wire, iron chains or nylon rope.
Wherein, the quantity of leading sheave can be selected according to concrete needs, and leading sheave is fixed on the upper surface of principal arm by pulley base.
The structural strength of steel rope, iron wire, iron chains or nylon rope is high, long service life, and resistance to corrosion is strong, and buying is easy, cost is low, can reduce the device fabrication cost, saves enterprise's spending.
The present invention also provides a kind of auxiliary regenerative apparatus, as shown in Figure 1 to Figure 3, comprises flexible axle 14, and flexible axle 14 1 ends are connected with the second joint 114 on the auxiliary 11, and the other end is connected with execution unit on the hoisting crane.
This auxiliary regenerative apparatus is simple in structure, easy to operate, cost of manufacture is low, can cooperate with execution unit by flexible axle auxiliary is reclaimed, need not independently drive source, reduced the equipment failure rate that brings because drive source independently is set, reduce the maintenance cost of equipment, can make the cost of total car, and then improved the market competitiveness of equipment.
Preferably, the auxiliary regenerative apparatus also comprises the guide piece 124 that is arranged on the principal arm 12, and flexible axle 14 is walked around guide piece 124, one ends and is connected with the second joint 114, and the other end is connected with execution unit.
Guide piece is simple in structure, and making is easy, cost is low, and the alerting ability that cooperates with flexible axle is good; Flexible axle is walked around guide piece and is cooperated with guide piece, can change by guide piece the direction of transfer of the power on the flexible axle, has enlarged the range of choice of execution unit, can improve the convenience that auxiliary reclaims by choosing different execution units.
Preferably, guide piece 124 is leading sheave, and leading sheave and the second joint 114 are positioned at same plane; Execution unit is second section arm 126 or the 3rd joint arm of principal arm 12 or the 4th joint arm or the elevator of principal arm 12 of principal arm 12; Flexible axle 14 is steel rope, iron wire, iron chains or nylon rope.
Wherein, the quantity of leading sheave can be selected according to concrete needs.
Certainly, also can be that actuating device in the principal arm is as execution unit etc.; These variations all do not break away from design philosophy of the present invention, belong to the protection domain of this patent.
Guide piece and the second joint are positioned at same plane, and auxiliary reclaims flexibly, can reduce the friction force between flexible axle and guide piece, prolong parts service life; Replace independently drive source by the second section arm of elevator or principal arm or the 3rd the 4th joint arm driving that saves arm or principal arm of principal arm, can reduce device fabrication cost, rate of occurrence of equipment failure and maintenance of equipment cost, improve the market competitiveness; The structural strength of steel rope, iron wire, iron chains or nylon rope is high, long service life, and resistance to corrosion is strong, and buying is easy, cost is low, can reduce the device fabrication cost, saves enterprise's spending.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.

Claims (10)

1. the auxiliary recovery method of a hoisting crane is characterized in that, comprising:
Step 102, the first joint (112) on the auxiliary (11) is hinged with the first stay bearing plate (122) on the principal arm (12), that lays down subsequently that auxiliary (11) and principal arm (12) be hinged connects fork shaft (13), and described auxiliary (11) can be around the jointed shaft rotation of described the first joint (112) with described the first stay bearing plate (122) the plane at described principal arm (12) place in;
Step 103 is by the second joint (114) on flexible axle (14) the connection auxiliary (11) and the execution unit on the hoisting crane;
Step 104, drive described execution unit action, making described flexible axle (14) spur described auxiliary (11) rotates around the jointed shaft of described the first joint (112) with described the first stay bearing plate (122), described auxiliary (11) is recycled on the second stay bearing plate (123) on the principal arm (12), make described auxiliary (11) and the parallel placement of described principal arm (12).
2. the auxiliary recovery method of hoisting crane according to claim 1 is characterized in that, also comprises before described step 102:
Step 101 turns to the position that the hinge hole on described the first joint (112) overlaps with hinge hole on described the first stay bearing plate (122) with described auxiliary (11) around the described fork shaft (13) that connects first.
3. the auxiliary recovery method of hoisting crane according to claim 2 is characterized in that,
In step 103, described flexible axle (14) is walked around the guide piece (124) that is arranged on the described principal arm (12), and an end connects described the second joint (114), and the other end connects described execution unit.
4. the auxiliary recovery method of hoisting crane according to claim 3 is characterized in that,
In step 104, described execution unit is the second section arm (126) of principal arm (12), described execution unit course of action is: the second section arm (126) by principal arm (12) stretches out, and makes described flexible axle (14) spur described auxiliary (11) and rises on described the second stay bearing plate (123).
5. the auxiliary recovery method of hoisting crane according to claim 3 is characterized in that,
In step 104, described execution unit is elevator, and described execution unit course of action is: reclaim flexible axle by described elevator, make described flexible axle (14) spur described auxiliary (11) and rise on the second stay bearing plate (123).
6. the auxiliary recovery method of each described hoisting crane in 5 according to claim 3 is characterized in that described guide piece (124) is positioned at same plane with described the second joint (114).
7. the auxiliary recovery method of hoisting crane according to claim 6 is characterized in that, described guide piece (124) is leading sheave, and described flexible axle (14) is steel rope, iron wire, iron chains or nylon rope.
8. an auxiliary regenerative apparatus is characterized in that, comprises flexible axle (14), and described flexible axle (14) one ends are connected with the second joint (114) on the described auxiliary (11), and the other end is connected with execution unit on the hoisting crane.
9. auxiliary regenerative apparatus according to claim 8, it is characterized in that, also comprise the guide piece (124) that is arranged on the principal arm (12), described flexible axle (14) is walked around described guide piece (124), one end is connected with described the second joint (114), and the other end is connected with described execution unit.
10. auxiliary regenerative apparatus according to claim 9 is characterized in that, described guide piece (124) is leading sheave, and described leading sheave and described the second joint (114) are positioned at same plane; Described execution unit is second section arm (126) or the 3rd joint arm of described principal arm (12) or the 4th joint arm or the elevator of described principal arm (12) of described principal arm (12); Described flexible axle (14) is steel rope, iron wire, iron chains or nylon rope.
CN201210574667.3A 2012-12-26 2012-12-26 The auxiliary recovery method and auxiliary retracting device of crane CN103058075B (en)

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CN103058075B CN103058075B (en) 2017-08-04

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103626052A (en) * 2013-12-02 2014-03-12 广西大学 Two-degree-of-freedom translational type crane auxiliary arm mounting device
CN105084232A (en) * 2015-07-31 2015-11-25 徐州重型机械有限公司 Crane jib, crane and crane jib recycling method
CN107161886A (en) * 2017-07-17 2017-09-15 徐州重型机械有限公司 The auxiliary self installation method of crane, from method for dismounting and from disassembly system
CN110304556A (en) * 2019-06-20 2019-10-08 四川长江工程起重机有限责任公司 Autocrane self-loading and unloading type auxiliary installing mechanism

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JP4809939B2 (en) * 2005-06-07 2011-11-09 株式会社タダノ Jib attachment and detachment device for telescopic boom tip of mobile crane
CN102381641A (en) * 2011-11-04 2012-03-21 三一汽车起重机械有限公司 Crane auxiliary arm mounting equipment and crane auxiliary arm mounting method
CN102424329A (en) * 2011-08-20 2012-04-25 三一汽车起重机械有限公司 Crane and sub arm installing device thereof
CN202245839U (en) * 2011-08-17 2012-05-30 三一汽车起重机械有限公司 Crane and auxiliary arm mounting device thereof
CN102602825A (en) * 2012-03-13 2012-07-25 中联重科股份有限公司 Unfolding/folding device of auxiliary arm, arm support structure and crane
CN203021220U (en) * 2012-12-26 2013-06-26 三一重工股份有限公司 Subsidiary arm recovery device and crane

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JPS56113688A (en) * 1980-02-14 1981-09-07 Tadano Tekkosho Kk Method of detaching auxiliary jib in expansion boom type crane with auxiliary jib
EP0476520A2 (en) * 1990-09-13 1992-03-25 KABUSHIKI KAISHA KOBE SEIKO SHO also known as Kobe Steel Ltd. A jib stretching and folding device for use in a crane
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103626052A (en) * 2013-12-02 2014-03-12 广西大学 Two-degree-of-freedom translational type crane auxiliary arm mounting device
CN103626052B (en) * 2013-12-02 2015-06-17 广西大学 Two-degree-of-freedom translational type crane auxiliary arm mounting device
CN105084232A (en) * 2015-07-31 2015-11-25 徐州重型机械有限公司 Crane jib, crane and crane jib recycling method
CN105084232B (en) * 2015-07-31 2017-05-03 徐州重型机械有限公司 Crane jib, crane and crane jib recycling method
CN107161886A (en) * 2017-07-17 2017-09-15 徐州重型机械有限公司 The auxiliary self installation method of crane, from method for dismounting and from disassembly system
CN110304556A (en) * 2019-06-20 2019-10-08 四川长江工程起重机有限责任公司 Autocrane self-loading and unloading type auxiliary installing mechanism

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