CN203486802U - Balance arm and tower crane - Google Patents

Balance arm and tower crane Download PDF

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Publication number
CN203486802U
CN203486802U CN201320376862.5U CN201320376862U CN203486802U CN 203486802 U CN203486802 U CN 203486802U CN 201320376862 U CN201320376862 U CN 201320376862U CN 203486802 U CN203486802 U CN 203486802U
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CN
China
Prior art keywords
joint
arm
adjustable bracing
thread
bogie
Prior art date
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CN201320376862.5U
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Chinese (zh)
Inventor
谭泽松
Original Assignee
中联重科股份有限公司
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Priority to CN201320376862.5U priority Critical patent/CN203486802U/en
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Publication of CN203486802U publication Critical patent/CN203486802U/en

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Abstract

The utility model aims at providing a balance arm and a tower crane. The balance arm comprises an arm joint, wherein the arm joint comprises a first joint piece and a second joint piece detachably connected with the first joint piece, and the first joint piece and the second joint piece form a boom structure; the first joint piece is positioned at the top of the arm joint, the second joint piece comprises two side frames oppositely arranged at interval, the two side frames are distributed on two transverse sides of the arm joint symmetrically, and are connected on the first joint piece detachably. The balance arm effectively solves the problems that the arm joint of the balance arm has large occupied area to result in high transportation cost.

Description

Equilibrium arm and tower crane

Technical field

The utility model relates to tower crane technical field, in particular to a kind of equilibrium arm and tower crane.

Background technology

Equilibrium arm is on tower crane and important constituent elements, its Main Function is the moment that balance derrick runway girder end produces, for the especially large-scale flat-top tower crane of Large Towers machine, therefore the scantling of structure of its equilibrium arm is larger, long, high oversize owing to there being larger lifting performance.In general, equilibrium arm can adopt multi-section type combination, Figure 1 shows that the equilibrium arm of tower crane in prior art, this equilibrium arm by forearm joint 1, in arm joint 2 and postbrachium joint 3 form, front, middle arm joint is square-section.Figure 2 shows that equilibrium arm forearm joint, this arm joint passes through welding fabrication, be integral structure, because arm joint height and the size of equilibrium arm are generally bigger than normal, large so take up room, can not put into freight container and transport, cause making arm joint causing great difficulty aspect outlet sea-freight, other transportation modes must be adopted, thereby traffic cost can be increased.

Utility model content

The utility model aims to provide a kind of equilibrium arm and tower crane, to solve the arm joint of equilibrium arm in prior art, takes up room large and causes the problem that traffic cost is high.

To achieve these goals, according to an aspect of the present utility model, provide a kind of equilibrium arm, comprised arm joint, arm joint comprises: first joint; Second joint, is removably connected with first joint, and first joint and second joint are combined into jib structure; First joint is positioned at the top of arm joint; Second joint comprises: two bogie side frames that relative spacing arranges, and two bogie side frames are symmetrically distributed in the both lateral sides of arm joint, and two bogie side frames are removably connected to respectively on first joint.

Further, arm joint also comprises that a plurality of Adjustable bracing bars, Adjustable bracing bar are positioned at the bottom of arm joint, and Adjustable bracing bar is detachably connected between two bogie side frames.

Further, a plurality of Adjustable bracing bars comprise a plurality of horizontal Adjustable bracing bars and a plurality of oblique Adjustable bracing bar, each horizontal Adjustable bracing bar is along the horizontal expansion of arm joint, a plurality of horizontal Adjustable bracing bars arrange along the length direction interval of arm joint, between two adjacent horizontal Adjustable bracing bars, an oblique Adjustable bracing bar is set, a plurality of Adjustable bracing bars are Z-shaped and arrange.

Further, Adjustable bracing bar comprises the body of rod, and the two ends of the body of rod are respectively arranged with the first connecting portion and the second connecting portion, and the first connecting portion is connected with two bogie side frames respectively removably with the second connecting portion, and the first connecting portion comprises: two-thread screw, is connected on the body of rod; Active joint, is threaded on the free end of two-thread screw, and active joint is connected removably with bogie side frame; The first stop nut, be set on two-thread screw and with active joint butt; The second stop nut, be set on two-thread screw and with body of rod butt.

Further, two-thread screw has the first thread segment and the second thread segment, two-thread screw is threaded with the body of rod by the first thread segment, and two-thread screw is connected with active joint by the second thread segment, and the thread rotary orientation of the first thread segment is contrary with the thread rotary orientation of the second thread segment.

Further, the first connecting portion is identical with the structure of the second connecting portion.

Further, first joint comprises: support body; Adapter plate, comprises the otic placode being oppositely arranged, and adapter plate is fixedly connected on the two ends of support body; A plurality of hangers, are fixedly connected on the top of support body; A plurality of connecting panels 14, are fixedly connected on the bottom of support body.

Further, second joint comprises: chord member; A plurality of web members, a plurality of web members are Z-shaped arrangement along the bearing of trend of chord member, and web member comprises first end and the second end being oppositely arranged, and the first end of web member is fixedly connected on chord member; The first otic placode, two adjacent web members are fixedly connected with the first otic placode in the second end place of adjacency, and the first otic placode is removably connected with connecting panel.

According on the other hand of the present utility model, a kind of tower crane is provided, comprise equilibrium arm, equilibrium arm is above-mentioned equilibrium arm.

Application the technical solution of the utility model, the structure that the arm joint of equilibrium arm is divided into a plurality of joints, and all can install and dismantle between each sheet joint, in transportation, the dismounting of arm joint can be divided into the sheet joint of a plurality of dispersions, again by folding stacking of sheet joint of a plurality of dispersions, so farthest reduce carriage arm and saved required Container Dimensions, made arm save convenient transportation, reduced traffic cost.

Accompanying drawing explanation

The Figure of description that forms the application's a part is used to provide further understanding of the present utility model, and schematic description and description of the present utility model is used for explaining the utility model, does not form improper restriction of the present utility model.In the accompanying drawings:

Fig. 1 shows the structural representation of equilibrium arm of the prior art;

Fig. 2 shows the structural representation of arm joint of the equilibrium arm of Fig. 1;

Fig. 3 shows the block diagram of the arm joint of equilibrium arm of the present utility model;

Fig. 4 shows the block diagram of the first joint of equilibrium arm of the present utility model;

Fig. 5 shows the block diagram of the bogie side frame of equilibrium arm of the present utility model;

Fig. 6 shows the block diagram of the Adjustable bracing bar of equilibrium arm of the present utility model;

Fig. 7 shows the travelling position schematic diagram of the arm joint of equilibrium arm of the present utility model;

Fig. 8 shows the structural representation of the arm joint assembling first step of equilibrium arm of the present utility model;

Fig. 9 shows the structural representation of the arm joint assembling second step of equilibrium arm of the present utility model.

The specific embodiment

It should be noted that, in the situation that not conflicting, embodiment and the feature in embodiment in the application can combine mutually.Describe below with reference to the accompanying drawings and in conjunction with the embodiments the utility model in detail.

According to an aspect of the present utility model, a kind of equilibrium arm is provided, be applied in especially on tower crane, as shown in Fig. 3 to Fig. 9, equilibrium arm comprises arm joint, and arm joint comprises that 20, the second joints 20 of 10 and second joints of first joint are removably connected with first joint 10; 10 and second joints 20 of first joint are combined into jib structure.

The structure that arm joint is divided into a plurality of joints, and all can install and dismantle between each sheet joint, in transportation, the dismounting of arm joint can be divided into the sheet joint of a plurality of dispersions, again by folding stacking of sheet joint of a plurality of dispersions, so farthest reduce carriage arm and saved required Container Dimensions, make arm save convenient transportation, reduced traffic cost.Can find out as shown in Figure 7, the space that the arm joint after being disassembled occupies while being stacked state is less.Meanwhile, between two sheet joints, adopt high strength bolt group to connect to guarantee that the intensity of equilibrium arm is unaffected.

Further preferably, first joint is positioned at the top of arm joint, second joint 20 comprises bogie side frame 30 and a plurality of Adjustable bracing bar 40 that two relative spacings arrange, two bogie side frames are symmetrically distributed in the both lateral sides of arm joint, bogie side frame 30 is removably connected to respectively on first joint 10, a plurality of Adjustable bracing bars 40 are connected between two bogie side frames 30, and Adjustable bracing bar 40 can regulate two distances between bogie side frame 30.A plurality of Adjustable bracing bars 40 comprise a plurality of horizontal Adjustable bracing bars and a plurality of oblique Adjustable bracing bar, each horizontal Adjustable bracing bar is along the horizontal expansion of arm joint, a plurality of horizontal Adjustable bracing bars arrange along the length direction interval of arm joint, between two adjacent horizontal Adjustable bracing bars, an oblique Adjustable bracing bar is set, a plurality of Adjustable bracing bars 40 are Z-shaped and arrange.

Adjustable bracing bar 40 comprises the body of rod 44, the two ends of the body of rod 44 are respectively arranged with the first connecting portion and the second connecting portion, the first connecting portion is connected with two bogie side frames 30 respectively removably with the second connecting portion, the first connecting portion comprises two-thread screw 41, active joint 42 and stop nut 43, two-thread screw 41 is connected on Adjustable bracing bar 40, active joint 42 is threaded on the free end of two-thread screw 41, active joint 42 is connected removably with bogie side frame 30, on active joint 42, be provided with the tapped bore for being connected with bogie side frame 30, the first stop nut 43 be set on two-thread screw 41 and with active joint 42 butts, the second stop nut 45 be set on two-thread screw 41 and with the body of rod 44 butts.

Two-thread screw 41 has the first thread segment and the second thread segment, two-thread screw 41 is threaded with the body of rod 44 by the first thread segment, two-thread screw 41 is connected with active joint 42 by the second thread segment, and the thread rotary orientation of the first thread segment is contrary with the thread rotary orientation of the second thread segment.

Making and fitting process, be difficult to avoid error to produce and cause equilibrium arm to be difficult to install, particularly the spacing between two bogie side frames 30, adopts Adjustable bracing bar to be arranged between two bogie side frames in this arm joint, and energy actv. spacing, guarantees assembling.As shown in Figure 6, the first thread segment of two-thread screw is minus thread, and the second thread segment is right-hand screw thread, when rotation two-thread screw, can guarantee that active joint and the body of rod move simultaneously, make Adjustable bracing bar 40 extend simultaneously and shorten, after adjusting completes, this stop nut 43 is tightened to prevent that two-thread screw from rotating.It should be noted that, the pulling force being in use subject to due to the arm joint top of equilibrium arm is larger, so first joint is made of one to structure, equilibrium arm more adapts to stressed in use procedure like this; Than the arm joint bottom of equilibrium arm, arm saves the stressed less of lower part, so just consider to use the Adjustable bracing bar of this removable form to carry out fixing bogie side frame.

On the second connecting portion, be formed with and second joint 20 tapped bore that are connected.The tapped bore forming on the second connecting portion, for being directly connected with bogie side frame, only regulates the length of Adjustable bracing bar 40 by the first connecting portion.Certainly, also the first connecting portion and the second connecting portion can be arranged to structure identical, can the length of Adjustable bracing bar 40 be regulated by the two ends of the body of rod like this.

Further, first joint 10 comprises support body 11, adapter plate 12 and a plurality of hanger 13, and adapter plate 12 comprises the otic placode being oppositely arranged, and adapter plate 12 is fixedly connected on the two ends of support body 11, and a plurality of hangers 13 are fixedly connected on the top of support body 11.First joint also comprises a plurality of connecting panels 14, is fixedly connected on the bottom of support body 11, and connecting panel 14 is arranged on support body 11 towards a side of second joint 20.Adapter plate 12 is to be welded by two otic placodes, by bearing pin, be connected with tower head or slewing tower, adapter plate 12 is main load parts, therefore adapter plate needs enough intensity and quality of fit, because adapter plate can facilitate welding processing, the control of precision while needing on the other hand adapter plate to be convenient to make on the one hand.Above hanger, be drilled with tapped bore, can connect each sheet joint and strut and for lifting equilibrium arm with bolt; Connecting panel 14 is veneer, and connecting panel 14 connects for sheet internode.

Second joint 20 comprises chord member 21, a plurality of web member 22, the first otic placode 23, the second otic placode 24 and end plate 25, a plurality of web members are Z-shaped arrangement along the bearing of trend of chord member, web member 22 comprises first end and the second end being oppositely arranged, the first end of web member 22 is fixedly connected on chord member 21, two adjacent web members 22 are fixedly connected with the first otic placode 23 in the second end place of adjacency, and the first otic placode 23 is removably connected with connecting panel 14.The second otic placode 24 is fixedly connected on a side of chord member 21; End plate 25 is arranged on the two ends of chord member 21, is provided with ejector pin and bolt hole on end plate 25.End plate 25 is welded with ejector pin and bolt hole above, and ejector pin and bolt hole are for installing the knock hole of whole machine balancing arm, and the second otic placode is for the connection of bottom strut.

The number of assembling steps of equilibrium arm is as shown in Fig. 8 to Fig. 9, and Fig. 8, for assembling first joint 10 and bogie side frame 30, stands on the bogie side frame of a side on ground, and lifting first saves to bogie side frame top, alignment mounting hole, and group tights a bolt.According to method above, the bogie side frame of an other side is installed.On mounted architecture basics, assemble the Adjustable bracing bar of bottom surface, regulate two-thread screw, bogie side frame is parallel and spacing each other equal to guarantee two, and the arm joint after installing as shown in Figure 9.

According to utility model on the other hand, provide a kind of tower crane, comprise equilibrium arm, equilibrium arm is above-mentioned equilibrium arm.The equilibrium arm convenient transportation of tower crane.

The foregoing is only preferred embodiment of the present utility model, be not limited to the utility model, for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.

Claims (9)

1. an equilibrium arm, comprises arm joint, it is characterized in that, described arm joint comprises:
First joint (10);
Second joint (20), is removably connected with described first joint (10), and described first joint (10) and described second joint (20) are combined into jib structure;
Described first joint is positioned at the top of described arm joint;
Described second joint (20) comprising: two bogie side frames (30) that relative spacing arranges, and described two bogie side frames are symmetrically distributed in the both lateral sides of described arm joint, and described two bogie side frames (30) are removably connected to respectively on described first joint (10).
2. equilibrium arm according to claim 1, it is characterized in that, described arm joint also comprises that a plurality of Adjustable bracing bars (40), described Adjustable bracing bar (40) are positioned at the bottom of described arm joint, and described Adjustable bracing bar (40) is detachably connected between two described bogie side frames (30).
3. equilibrium arm according to claim 2, it is characterized in that, described a plurality of Adjustable bracing bar (40) comprises a plurality of horizontal Adjustable bracing bars and a plurality of oblique Adjustable bracing bar, each horizontal Adjustable bracing bar is along the horizontal expansion of described arm joint, described a plurality of horizontal Adjustable bracing bar arranges along the length direction interval of described arm joint, between two adjacent described horizontal Adjustable bracing bars, a described oblique Adjustable bracing bar is set, described a plurality of Adjustable bracing bars (40) are Z-shaped and arrange.
4. according to the equilibrium arm described in claim 2 or 3, it is characterized in that, described Adjustable bracing bar (40) comprises the body of rod (44), the two ends of the described body of rod (44) are respectively arranged with the first connecting portion and the second connecting portion, described the first connecting portion is connected with described two bogie side frames (30) respectively removably with described the second connecting portion, and described the first connecting portion comprises:
Two-thread screw (41), is connected on the described body of rod (44);
Active joint (42), is threaded on the free end of described two-thread screw (41), and described active joint (42) is connected removably with described bogie side frame (30);
The first stop nut (43), be set in described two-thread screw (41) upper and with described active joint (42) butt;
The second stop nut (45), be set in described two-thread screw (41) upper and with the described body of rod (44) butt.
5. equilibrium arm according to claim 4, it is characterized in that, described two-thread screw (41) has the first thread segment and the second thread segment, described two-thread screw (41) is threaded with the described body of rod (44) by described the first thread segment, described two-thread screw (41) is connected with described active joint (42) by described the second thread segment, and the thread rotary orientation of described the first thread segment is contrary with the thread rotary orientation of described the second thread segment.
6. equilibrium arm according to claim 4, is characterized in that, described the first connecting portion is identical with the structure of described the second connecting portion.
7. equilibrium arm according to claim 1, is characterized in that, described first joint (10) comprising:
Support body (11);
Adapter plate (12), comprises the otic placode being oppositely arranged, and described adapter plate (12) is fixedly connected on the two ends of described support body (11);
A plurality of hangers (13), are fixedly connected on the top of described support body (11);
A plurality of connecting panels 14, are fixedly connected on the bottom of described support body (11).
8. equilibrium arm according to claim 1, is characterized in that, described second joint (20) comprising:
Chord member (21);
A plurality of web members (22), described a plurality of web members are Z-shaped arrangement along the bearing of trend of described chord member, and described web member (22) comprises first end and the second end being oppositely arranged, and the first end of described web member (22) is fixedly connected on described chord member (21);
The first otic placode (23), adjacent two described web members (22) are fixedly connected with described the first otic placode (23) in the second end place of adjacency, and described the first otic placode (23) is removably connected with described connecting panel (14).
9. a tower crane, comprises equilibrium arm, it is characterized in that, described equilibrium arm is the equilibrium arm described in claim 1 to 8 any one.
CN201320376862.5U 2013-06-27 2013-06-27 Balance arm and tower crane CN203486802U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201320376862.5U CN203486802U (en) 2013-06-27 2013-06-27 Balance arm and tower crane

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Application Number Priority Date Filing Date Title
CN201320376862.5U CN203486802U (en) 2013-06-27 2013-06-27 Balance arm and tower crane

Publications (1)

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CN203486802U true CN203486802U (en) 2014-03-19

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104045008A (en) * 2014-05-30 2014-09-17 中联重科股份有限公司 Segmented balance arm and tower crane
CN105565189A (en) * 2016-02-29 2016-05-11 芜湖合建路桥机械有限公司 Firm structure type tower crane
CN106115514A (en) * 2016-08-31 2016-11-16 徐工集团工程机械股份有限公司 Jib and crane
CN106629421A (en) * 2016-12-19 2017-05-10 谢国贤 Swing arm tower crane provided with integrated hoisting arm
CN106915699A (en) * 2017-04-27 2017-07-04 合肥智慧龙图腾知识产权股份有限公司 A kind of architectural engineering tower crane with lock function
CN107399679A (en) * 2017-09-22 2017-11-28 张家港沙工科技服务有限公司 A kind of high stability tower crane

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104045008A (en) * 2014-05-30 2014-09-17 中联重科股份有限公司 Segmented balance arm and tower crane
CN104045008B (en) * 2014-05-30 2016-01-06 中联重科股份有限公司 Segment type equilibrium arm and tower crane
CN105565189A (en) * 2016-02-29 2016-05-11 芜湖合建路桥机械有限公司 Firm structure type tower crane
CN106115514A (en) * 2016-08-31 2016-11-16 徐工集团工程机械股份有限公司 Jib and crane
CN106629421A (en) * 2016-12-19 2017-05-10 谢国贤 Swing arm tower crane provided with integrated hoisting arm
CN106915699A (en) * 2017-04-27 2017-07-04 合肥智慧龙图腾知识产权股份有限公司 A kind of architectural engineering tower crane with lock function
CN107399679A (en) * 2017-09-22 2017-11-28 张家港沙工科技服务有限公司 A kind of high stability tower crane

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