CN206615940U - A kind of swing arm tower crane with integral type arm - Google Patents

A kind of swing arm tower crane with integral type arm Download PDF

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Publication number
CN206615940U
CN206615940U CN201621395248.3U CN201621395248U CN206615940U CN 206615940 U CN206615940 U CN 206615940U CN 201621395248 U CN201621395248 U CN 201621395248U CN 206615940 U CN206615940 U CN 206615940U
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Prior art keywords
arm
tower
segment
lifting
transition segment
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CN201621395248.3U
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谢国贤
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谢国贤
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Abstract

The utility model discloses a kind of swing arm tower crane with integral type arm, including tower body and arm, the tower body includes the transition segment positioned at its top, the arm is integral type structure and is hinged with the transition segment, arm is divided into lifting section and balancing segment by boundary of the hinged support between the arm and transition segment, lift heavy dolly is slidably connected in wherein described lifting section, the balancing segment is provided with balancing weight;The luffing unit for adjusting tower body and arm angle is also associated between the transition segment and arm.

Description

A kind of swing arm tower crane with integral type arm
Technical field
The utility model is related to tower crane technical field, more particularly to a kind of swing arm tower crane with integral type arm.
Background technology
The structural representation of existing tower crane arm is shown referring to Fig. 1 and Fig. 2, by counter-jib and movable crane arm structure Into being connected, and be provided with counter-jib by A framves assembly wherein between counter-jib and wire rope pulley group and crane arm luffing Hoist engine for winding steel wire rope, changes angle between crane arm and tower body, so as to change crane arm by winding steel wire rope On lift heavy suspension hook mobile range in the horizontal direction, the process is the amplitude changing process of tower crane.And right existing arm knot Structure has the following disadvantages:First, in tower crane amplitude changing process, the arm of force of crane arm can be with angle change between crane arm and tower body Change and change, and the arm of force of counter-jib then can be constant all the time, this will easily cause the force unbalance of crane arm and counter-jib, So as to the potential safety hazard that crane arm is fractureed or tower crane is toppled over occur;Second, and because counter-jib and crane arm are in amplitude changing process Middle arm of force change is asynchronous, therefore its safe luffing scope is smaller, is that operation is made troubles;3rd, crane arm and counter-jib Between mainly by steel wire rope connect, and in amplitude changing process wind steel wire rope when can increase steel rope abrasion, it is therefore desirable to calmly Phase checks more change steel rope, and maintenance cost is high;4th, and due to being connected between crane arm and counter-jib mainly by steel wire rope, when When crane arm occurs bending deformation because load-carrying is excessive, wire cable rupture is easily caused, so that crane arm and counter-jib stress Imbalance, triggers second accident.
The content of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art novel there is provided a kind of structure, safe and reliable tool There is the swing arm tower crane of integral type arm.
In order to realize the above object the technical scheme that the utility model is used is:
A kind of swing arm tower crane with integral type arm, including tower body and arm, the tower body are included positioned at its top Transition segment, the arm is integral type structure and is hinged with the transition segment, with the hinged support between the arm and transition segment Arm is divided into lifting section and balancing segment to demarcate, wherein slidably connecting lift heavy dolly, the balance in lifting section Section is provided with balancing weight;The luffing unit for adjusting tower body and arm angle is also associated between the transition segment and arm.
Further, the luffing unit is the oil cylinder that two ends are hinged with transition segment and arm respectively, wherein the luffing unit Pin joint between arm is located at the lifting section of arm.
Further, described tower body includes transition segment, rotary support, jacking section and the basis set gradually from top to bottom Section, in addition to change the outer sleeve frame being enclosed on base section.
Further, when the lift heavy dolly is unloaded, the balancing segment torque of the arm is more than lifting section.
The beneficial effects of the utility model are:Tack tower crane of the present utility model uses the arm of integral structure, passes through Luffing unit changes the angle between arm and tower body to change the horizontal range between arm lifting section end and tower body(I.e. The horizontal amplitude of arm), compared with traditional tower crane structure, the arm stability of integral structure is higher, and is hung in regulation During the horizontal amplitude of arm, its balancing segment and the torque arm length equal proportion of lifting section change, and are more beneficial for keeping arm stress balance, Prevent the excessive security incident for causing arm to occur toppling over or deform of side stress.
Brief description of the drawings
Fig. 1 is the structural representation of existing tower crane arm.
Fig. 2 is structural representation of the existing tower crane arm after luffing.
Fig. 3 is structural representation of the present utility model.
Fig. 4 is structural representation of the utility model after luffing.
Wherein, 1- arms, 11- liftings section, 111- lift heavy dollies, 12- balancing segments, 121- balancing weights, 2- tower bodies, 21- mistakes Cross section, 22- rotary supports, 23- jacking sections, 24- base sections, 25- outer sleeve frames, 3- luffing units.
Embodiment
The utility model technical scheme claimed is made further specifically in conjunction with the drawings and specific embodiments It is bright.
Referring to shown in accompanying drawing 3 and accompanying drawing 4, the tack tower crane in the present embodiment, including tower body 2 and arm 1.Wherein tower body 2 Including the transition segment 21 set gradually from top to bottom, rotary support 22, jacking section 23 and base section 24, in addition to change and be enclosed on basis Outer sleeve frame 25 on section 24.
Arm 1 is integral type structure and is hinged with the transition segment 21, to be hinged branch between the arm 1 and transition segment 21 Arm 1 is divided into lifting section 11 and balancing segment 12 by point for boundary, arm 1 is constituted the lever using the hinged support as fulcrum Structure, wherein slidably connecting lift heavy dolly 111 in lifting section 11, the balancing segment 12 is provided with balancing weight 121;The mistake Cross the luffing unit 3 being also associated between section 21 and arm 1 for adjusting tower body 2 and the angle of arm 1.In the present embodiment, become Width unit 3 is the oil cylinder that two ends are hinged with transition segment 21 and arm 1 respectively, wherein being hinged between the luffing unit 3 and arm 1 Point makes arm 1 be swung along hinged support, so as to adjust using oil cylinder positioned at the lifting section 11 of arm 1 in 11 sides of lifting section force The angle between arm 1 and tower body 2 is saved, luffing is finally realized.
Again referring to shown in accompanying drawing 4, in amplitude changing process, because arm 1 is integral type structure, lifting 11 Hes of section of arm 1 The arm of force meeting equal proportion change of balancing segment 12, is conducive to keeping lifting section 11 and the stress balance of balancing segment 12 in amplitude changing process, The security of arm 1 is improved, is that hoisting operation offers convenience while increasing its safe luffing scope.In the present embodiment, In order to reduce burden of the luffing unit 3 in operation, when lift heavy dolly 111 is unloaded, the torque of balancing segment 12 of arm 1 is more than Weight section 11, the load for compensating lifting section 11 during operation.Compared with traditional tower crane structure, the arm 1 of integral structure is steady It is qualitative higher, and when adjusting the horizontal amplitude of arm 1, its balancing segment 12 and the torque arm length equal proportion of lifting section 11 become Change, be more beneficial for keeping the stress balance of arm 1, prevent the excessive safety for causing arm 1 to occur toppling over or deform of side stress Accident.
Embodiment described above is only preferred embodiment of the present utility model, and any form is not done to the utility model On limitation.Any those skilled in the art, in the case where not departing from technical solutions of the utility model ambit, using upper The technology contents for stating announcement make more possible variations and retouching to technical solutions of the utility model, or modification is accordingly to be regarded as being equal The equivalent embodiment of change.Therefore all contents without departing from technical solutions of the utility model, made according to the thinking of the utility model Equivalent equivalence changes, all should be covered by protection domain of the present utility model.

Claims (1)

1. a kind of swing arm tower crane with integral type arm, including tower body(2)And arm(1), the tower body(2)Including positioned at it The transition segment on top(21), it is characterised in that:The arm(1)For integral type structure and with the transition segment(21)It is hinged, with The arm(1)With transition segment(21)Between hinged support be boundary by arm(1)It is divided into lifting section(11)And balancing segment (12), wherein lifting section(11)On slidably connect lift heavy dolly(111), the balancing segment(12)Provided with balancing weight (121);The transition segment(21)With arm(1)Between be also associated be used for adjust tower body(2)And arm(1)The luffing list of angle Member(3);The luffing unit(3)For two ends respectively with transition segment(21)And arm(1)The oil cylinder being hinged, wherein the luffing unit (3)With arm(1)Between pin joint be located at arm(1)Lifting section(11);Described tower body(2)Including from top to bottom successively The transition segment of setting(21), rotary support(22), jacking section(23)And base section(24), in addition to change and be enclosed on base section(24)On Outer sleeve frame(25);When the lift heavy dolly(111)When unloaded, the arm(1)Balancing segment(12)Torque is more than lifting section (11).
CN201621395248.3U 2016-12-19 2016-12-19 A kind of swing arm tower crane with integral type arm Active CN206615940U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201621395248.3U CN206615940U (en) 2016-12-19 2016-12-19 A kind of swing arm tower crane with integral type arm

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201621395248.3U CN206615940U (en) 2016-12-19 2016-12-19 A kind of swing arm tower crane with integral type arm

Publications (1)

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CN206615940U true CN206615940U (en) 2017-11-07

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CN201621395248.3U Active CN206615940U (en) 2016-12-19 2016-12-19 A kind of swing arm tower crane with integral type arm

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110371840A (en) * 2019-08-06 2019-10-25 庄俊 A kind of lifting supporting beam of adjustable in length

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110371840A (en) * 2019-08-06 2019-10-25 庄俊 A kind of lifting supporting beam of adjustable in length

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