CN103112786B - Auxiliary bracing connection device for carrying arm support - Google Patents

Auxiliary bracing connection device for carrying arm support Download PDF

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Publication number
CN103112786B
CN103112786B CN201310047299.1A CN201310047299A CN103112786B CN 103112786 B CN103112786 B CN 103112786B CN 201310047299 A CN201310047299 A CN 201310047299A CN 103112786 B CN103112786 B CN 103112786B
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CN
China
Prior art keywords
jib
waist rope
arm
chain
tie
Prior art date
Application number
CN201310047299.1A
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Chinese (zh)
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CN103112786A (en
Inventor
赵江平
黄彬
胡本
孙丽
Original Assignee
徐工集团工程机械股份有限公司
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Priority to CN201310047299.1A priority Critical patent/CN103112786B/en
Publication of CN103112786A publication Critical patent/CN103112786A/en
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Publication of CN103112786B publication Critical patent/CN103112786B/en

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66CCRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C23/00Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
    • B66C23/62Constructional features or details
    • B66C23/82Luffing gear
    • B66C23/821Bracing equipment for booms

Abstract

The embodiment of the invention discloses an auxiliary bracing connection device for carrying an arm support, relates to the technical field of construction machinery, and solves the technical problem in the existing technology that the service life of the arm support is short because the auxiliary bracing is easy to collide with the arm support. The auxiliary bracing connection device for carrying the arm support provided by the embodiment of the invention comprises the auxiliary bracing, a connecting seat body and a pulling plate, wherein one end of the auxiliary bracing is detachably connected with the connecting seat body, and the other end of the auxiliary bracing is connected with the pulling plate; and the connecting seat body is fixedly connected with the central position on the direction of an arm support base length of a boom. The embodiment is used for prolonging the service life and improving the use safety of the arm support.

Description

For carrying the waist rope connecting device of jib
Technical field
The present invention relates to technical field of engineering machinery, being specifically related to a kind of waist rope connecting device for carrying jib.
Background technology
In crawler crane, crane arm is formed by connecting by more piece jib, and crane arm has two effects: one is promote article, makes it have certain height and amplitude; Two is in order to bearing load, makes load progressively be delivered to complete machine and ground by crane arm.Visible, the length of crane arm is the principal parameter determining crawler crane operation height and amplitude.Therefore, in order to pursue larger lifting altitude and operation amplitude, need the length increasing crane arm.
Crane arm generally, after ground is assembled by more piece (or claim: multiple) jib, is played arm to operating angle by self luffing ability by the crane arm of crawler crane.Jib is a kind of space truss arm configuration, primarily of the chord member being arranged in four angle points in square-section be connected the diagonal web member of each chord member by being welded to form.Chord member is solid drawn pipe truss arm being arranged in four angle points in square-section.Web member is solid drawn pipe truss arm connecting chord member, is generally diagonal web member, both arranges at an angle with chord member.
As shown in Figure 1, arm state is played in level, the crane arm 1 that more piece jib assembles is a long and thin press-bending structure, due to the deadweight of crane arm 1, whole crane arm 1 especially pars intermedia branch produces downward amount of deflection, initial deformation will be strengthened further under the crane arm 1 axial component effect that luffing power produces, cause secondary deformation, thus increase the structural stress of crane arm 1.Crane arm 1 length is longer, and the weight of crane arm 1 is heavier, and after crane arm 1 arrives certain length, crane arm 1 will have the danger of unstability.Above-mentioned situation seriously hinders the realization wishing to reach more big elevating height and operation amplitude this purpose by increasing crane arm 1 length.
In prior art, at longer crane arm 1(or title: long-armed frame, long crane arm) in the middle of increase supporting or constraint be reduce long crane arm 1 bring crane arm distortion a kind of effective method.At present, the mode that crawler crane the most often adopts increases waist rope.
As shown in Figure 2, waist rope is connected between crane arm 1 and arm-tie 3.As can be seen from Figure 2: the position range of waist rope 2 on crane arm 1 is larger, due to the framing member that waist rope 2 is independent, on crane arm 1, how there are enough spaces to place waist rope 2, when waist rope 2 can not produce and interfere with arm-tie 3 or crane arm 1 and just become waist rope to arrange when lift arm, need the problem considered simultaneously.
As shown in Fig. 2 ~ Fig. 5, the mode (or claim: scheme) that prior art middle part of the side rope is arranged mainly contains following two kinds:
Scheme one, waist rope 2 are arranged between jib 4, the upper hinge place of jib 5 one end junction and arm-tie 3.
Waist rope 2 one end is connected to the top position of articulating point (place of A shown in Fig. 3) of jib 4 and jib 5 junction, and the other end is connected to (place of L shown in Fig. 3) on the hinge of the arm-tie 3 corresponding with jib hinge.When waist rope 2 installed by needs, two joint jibs and the bearing pin and two that is connected between jib 4 with jib 5 are saved the bearing pin be connected between arm-tie 3 and pulls down, more respectively the two ends of waist rope 2 are installed together respectively by bearing pin and jib 4, jib 5 and arm-tie 3; As the same when tearing waist rope 2 open.Under this kind of scheme, when crawler crane due to change brachium or other situations need to fall jib arm-tie 3 is dropped on crane arm 1 time, waist rope 2 is easily stacked on jib 4, jib 5.
Scheme two, waist rope 2 are arranged between jib 4, the lower hinge place of jib 5 one end junction and arm-tie 3.
Waist rope 2 one end is connected to the bottom position of articulating point (as shown in Figure 4 B place) of jib 4 and jib 5 junction, and the other end is connected to (as shown in Figure 4 L place) on the hinge of the arm-tie 3 corresponding with jib hinge.Like this, part waist rope 2 is in jib 4, jib 5 is inner, by to the waist rope 2 increasing the weight of jib inside, jib is fallen and arm-tie 3 when falling, the waist rope 2 on jib top is drawn to jib 4 or jib 5 inside by its weight by the waist rope 2 of jib inside, and the situation avoiding waist rope 2 stacking on jib 4, jib 5 with this occurs.
At least there is following technical matters in the waist rope arrangement that the prior art as shown in Fig. 2 ~ Fig. 5 provides:
Scheme one:
1, in scheme one as shown in Figure 3, due to the connection bearing pin that the bearing pin of fixing waist rope 2 is also simultaneously between two joint jibs and jib 4, jib 5 and between two joint arm-ties 3, when needs dismounting waist rope 2, the bearing pin and two connected between jib 4, jib 5 saves the bearing pin be connected between arm-tie 3 all needs dismounting again once, and jib 4, jib 5 and arm-tie 3 due to its weight larger, dismounting is very not convenient, greatly have impact on the dismounting efficiency of waist rope 2.
2, jib 4, jib 5 junction (as shown in Figure 5 S place) complete various function due to needs, and there is a considerable amount of annex in this region.Just following problem can be at least there is when arm-tie 3 drops on jib 5 as shown in Figure 3:
Problem 1, waist rope 2 are deposited on jib 4, jib 5, make arm-tie 3 cannot enter arm-tie bracket (in Fig. 5 C place) smoothly, thus affect the placement of arm-tie in whole jib length range;
Problem 2, due to waist rope 2 fall after have and drop on jib 4, jib 5 greatly, waist rope 2 falls region a considerable amount of annex, and these annexes are very likely interfered with the assembly of waist rope 2.When again playing arm, the assembly of the waist rope 2 fallen rises with arm-tie 3 again, in uphill process, probably hooks a certain annex on jib 4 or jib 5, cause the damage of some framing member.
Scheme two:
1, with scheme one in like manner, dismounting as shown in Figure 4 waist rope 2 time also need simultaneously dismounting jib 4, jib 5 and arm-tie 3, dismounting is very not convenient, have impact on the dismounting efficiency of waist rope 2.
2, by making a part, waist rope 2 is placed in jib 4 as shown in Figure 4, jib 5 is inner, when jib 4, jib 5 and arm-tie 3 fall, the waist rope 2 on jib 4, jib 5 top is drawn to jib 4, jib 5 inside by its weight by the waist rope 2 of jib 4, jib 5 inside, and the situation that waist rope 2 can be avoided stacking on jib 4, jib 5 occurs.But due to the waist rope 2 meeting gap by jib 4, jib 5 junction repeatedly when lift arm, avoid waist rope 2 mutually to collide with the annex at the place of S shown in Fig. 5 in process of frequently rising and falling and be still very difficult thing.
Meanwhile, for the ease of transport, often saving the overall length of arm-tie 3 corresponding to jib is equal with the length of crane arm, namely when arm-tie 3 is complete be arranged on jib time, arm-tie 3 attachment point and jib attachment point are on same vertical curve.By Fig. 1 and Fig. 2 is known when arm and work, arm-tie 3 and jib can be angled, now, the relative jib attachment point of arm-tie 3 attachment point has a horizontal displacement towards arm head direction, for Fig. 4, in above-mentioned situation, waist rope 2 also has a drift angle relative to vertical direction, namely near jib 5, just following technical matters can be caused:
When problem 1, work, the cross bar of jib 5 encountered by waist rope 2, the component making this place's cross bar bear waist rope 2 to bring more.
Problem 2, no matter problem 1 can or can not occur, and when lift arm, waist rope 2 inevitably collides with jib 5 cross bar.
Therefore: prior art exist waist rope easily and jib collide, and the collision that waist rope and jib occur can cause the damage of the main cross bar of jib, causes jib short for service life, is unfavorable for jib Long-Time Service.
Summary of the invention
The object of the invention is to propose a kind of waist rope connecting device for carrying jib, solve prior art exist waist rope easily and jib collide, cause the technical matters that jib service life is short.In addition, the preferred technical solution of the present invention also has that dismounting efficiency is high, the advantage of waist rope long service life.
For achieving the above object, the invention provides following technical scheme:
What the embodiment of the present invention provided comprises waist rope for the waist rope connecting device carrying jib, connects pedestal and arm-tie, wherein:
Wherein one end of described waist rope removably connects with the described pedestal that is connected, and the wherein other end of described waist rope is connected with described arm-tie;
Described connection pedestal is fixedly connected on the medium position on a crane arm joint jib bottom lengths direction wherein.
In one preferably or alternatively embodiment, the medium position on the length direction of described arm-tie is provided with connecting through hole, and the wherein other end of described waist rope is hinged by connecting pin and described connecting through hole.
In one preferably or alternatively embodiment, described connection pedestal is fixedly connected on the medium position on the main chord length direction bottom described jib.
In one preferably or alternatively embodiment, described connection pedestal comprises bed plate, connecting panel, adapter shaft and hanging part, wherein:
Described bed plate is fixedly connected on the main chord bottom described jib;
Described connecting panel is fixedly connected on described bed plate, and described connecting panel is provided with hinge hole, described adapter shaft runs through described hinge hole, described hanging part is inner concavity, and the end at the two ends of described hanging part is provided with end vias and is hinged by the two ends that described end vias and described adapter shaft extend described hinge hole;
Wherein one end of described waist rope is ring-type and this end mounts mutually with described hanging part.
In one preferably or alternatively embodiment, the other end of described waist rope is tabular and is provided with waist rope through hole, and described connecting pin runs through the described connecting through hole on described waist rope through hole and described arm-tie.
In one preferably or alternatively embodiment, this waist rope connecting device being used for carrying jib comprises two described arm-ties, is provided with two described main chords bottom described jib, wherein:
Main chord described in every root is all fixedly connected with described connection pedestal, described waist rope comprises two relative chains of position, article two, in described chain, one of them is connected with the described pedestal that is connected that two described main chords wherein a described main chord are fixedly connected with, and in two described chains, wherein another is connected with the described pedestal that is connected that two described main chords wherein main chord described in another root are fixedly connected with.
In one preferably or alternatively embodiment, described waist rope also comprises rigid link, and chain described in every bar includes the front section and being connected hindfoot portion with the described pedestal that is connected that described main chord is fixedly connected with of being connected with described arm-tie separately, wherein:
Wherein one end of described rigid link is installed with the first plate-like portion, and the wherein other end of described rigid link is installed with the second plate-like portion;
Article two, in described chain, wherein the front section of a described chain is connected by described first plate-like portion with the hindfoot portion of this chain;
Article two, in described chain, wherein the front section of another described chain is connected by described second plate-like portion with the hindfoot portion of this chain.
In one preferably or alternatively embodiment, the two ends that in two described chains, wherein the front section of a described chain is relative with described first plate-like portion position respectively with the hindfoot portion of this chain are hinged;
Article two, the two ends that in described chain, wherein the front section of another described chain is relative with described second plate-like portion position respectively with the hindfoot portion of this chain are hinged.
In one preferably or alternatively embodiment, in two described chains wherein the front section of a described chain length direction with in two described chains wherein the length direction of the front section of another described chain parallel.
In one preferably or alternatively embodiment, in two described chains wherein in the front section of a described chain and two described chains wherein another described chain front section between spacing be not more than spacing dimension between two described main chords.
Based on technique scheme, the embodiment of the present invention at least can produce following technique effect:
The embodiment of the present invention provide for carrying in the waist rope connecting device of jib, connect pedestal be fixedly connected on crane arm wherein one joint jib bottom (or claim: on the downside of jib, jib bottom side) medium position (being preferably fixed on the medium position on the length direction of main chord bottom a crane arm joint jib wherein) on length direction, and wherein one end of waist rope be connected pedestal and removably connect, simultaneously because the position height of arm-tie is higher than jib, so some waist rope inevitable is positioned at the inside of jib, when jib and arm-tie are fallen, the waist rope be positioned at above jib can be drawn to jib by own wt by the waist rope of jib inside, thus avoid waist rope stacking on jib.Meanwhile, because the space between the web member of the medium position place jib on the length direction of the main chord bottom jib and web member is larger, repeatedly rise and fall to come in contact and collision so efficiently avoid waist rope with jib inner structure, so improve the service life of jib, and because waist rope not easily comes in contact and collision with jib, so also safer, reliable in waist rope working process.
In addition, because Connection Block is the point of connection newly increased, this point of connection is exclusively used in the connection of waist rope and jib, so the point of connection used when can not be connected to each other jib and jib has any impact, so the dismounting of waist rope is more simple and direct, quick.
In addition, the optimal technical scheme that the embodiment of the present invention provides compared with prior art at least can produce following technique effect:
1, by mobile waist rope installation site, make use of space more than needed in the middle of jib, avoid waist rope repeatedly rise drop on stacking on jib or with the interference of jib and annex thereof, improve the reliability of jib work;
2, be only welded to connect plate at jib lower boom place, arm-tie place arranges a point of connection more, and technique is simple;
3, on jib and arm-tie, waist rope point of connection (this point of connection is also dismounting point simultaneously) is independent all separately, and do not affect the connection between jib and jib, between arm-tie and arm-tie, dismounting is more convenient, fast.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide a further understanding of the present invention, and form a application's part, schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is that in prior art, hoisting crane is in schematic diagram when level plays arm state;
Fig. 2 is the schematic diagram that the hoisting crane arranging waist rope in prior art is in when level plays arm state;
Fig. 3 saves the schematic diagram of connection mode between jib, arm-tie for a kind of waist rope and two that prior art provides;
Fig. 4 saves the schematic diagram of connection mode between jib, arm-tie for another kind of waist rope and two that prior art provides;
The schematic diagram of annexation between the two joint jibs that Fig. 5 provides for prior art;
The schematic front view of the waist rope connecting device for carrying jib that Fig. 6 provides for the embodiment of the present invention;
Fig. 7 is the enlarged diagram of the structure in Fig. 6 in rectangle frame D;
Fig. 8 is the enlarged diagram of the structure in Fig. 6 in rectangle frame E;
Fig. 9 is the schematic top plan view of jib shown in Fig. 6;
Figure 10 looks schematic diagram for a left side for the waist rope connecting device carrying jib shown in Fig. 6;
The schematic perspective view for carrying annexation between the waist rope connecting device middle part of the side rope of jib and jib that Figure 11 provides for the embodiment of the present invention;
Reference numeral: 1, crane arm; 2, waist rope; 3, arm-tie; 4, jib; 5, jib; 6, pedestal is connected; 61, bed plate; 62, connecting panel; 63, adapter shaft; 64, hanging part; 7, waist rope; 71, connecting pin; 72, rigid link; 721, the first plate-like portion; 722, the second plate-like portion; 731, front section; 732, hindfoot portion; 8, arm-tie; 9, jib; 91, main chord; 92, web member.
Detailed description of the invention
Below by accompanying drawing Fig. 6 ~ Figure 11 and the mode enumerating embodiment more of the present invention, technical scheme of the present invention (comprising optimal technical scheme) is described in further detail.It should be noted that: any technical characteristic in the present embodiment, any technical scheme is all one or more in the technical characteristic of plurality of optional or optional technical scheme, cannot exhaustive all alternative technical characteristics of the present invention and alternative technical scheme in order to describe succinct to need in presents, also the embodiment being not easy to each technical characteristic all emphasizes that it is one of optional numerous embodiments, so those skilled in the art should know: any technical characteristic in the present embodiment and any technical scheme all do not limit the scope of the invention, protection scope of the present invention should comprise those skilled in the art and not pay the thinkable any alternate embodiments of creative work.
Embodiments provide and be a kind ofly convenient to dismounting, long service life and not easily jib is caused to the waist rope connecting device for carrying jib of damage.
Below in conjunction with the elaboration that Fig. 6 ~ Figure 11 carries out specifically to technical scheme provided by the invention, the technical scheme of arbitrary technological means provided by the invention being carried out replacing or two or more technological means provided by the invention being carried out mutually combining and obtain all should within protection scope of the present invention.
As shown in Fig. 6 ~ Figure 11, what the embodiment of the present invention provided comprises waist rope 7 for the waist rope connecting device carrying jib, connects pedestal 6 and arm-tie 8, wherein:
Wherein one end (this end preferably adopts shackle) of waist rope 7 be connected pedestal 6 and removably connect, the wherein other end of waist rope 7 is connected with arm-tie 8.Connection pedestal 6 is fixedly connected on the medium position on a crane arm joint jib 9 bottom lengths direction wherein, is preferably fixedly connected on the medium position on the length direction of the main chord 91 bottom a crane arm joint jib 9 wherein.
Because connection pedestal 6 is fixedly connected on the main chord 91 bottom a crane arm joint jib 9 wherein, and for pulling crane arm to have realized the position height of the arm-tie 8 of arm operation higher than jib 9, so some waist rope 7 inevitable is positioned at the inside of jib 9, thus, when jib 9 and arm-tie 8 are fallen, the waist rope 7 be positioned at above jib 9 can be drawn to jib 9 by own wt by the waist rope 7 of jib 9 inside, thus avoids waist rope 7 stacking on jib 9.
Meanwhile, the space saved between the web member 92 of jib 9 junction and web member 92 relative to two due to the space between the web member 92 of the medium position place jib 9 on the length direction of the main chord 91 bottom jib 9 and web member 92 is larger, repeatedly rise and fall to come in contact and collision so efficiently avoid waist rope 7 with jib 9 inner structure, so improve the service life of jib 9, and make in waist rope 7 working process also safer, reliable.
In addition, because Connection Block is the point of connection (being also dismounting point) newly increased simultaneously, this point of connection is exclusively used in the connection of waist rope 7 and jib 9, so can not have any impact, so the dismounting of waist rope 7 is more simple and direct, quick to the point of connection that two joint jib 9 places of being connected to each other use.
Certainly, when connection pedestal 6 is fixedly connected on the main chord 91 bottom a crane arm joint jib 9 wherein, position on its main chord 91 bottom jib 9 is not limited to main chord 91 middle, can connect waist rope according to optional position outside main chord 91 two ends of the position of hinge on arm-tie 8 bottom jib 9.
As one preferably or alternatively embodiment, the medium position on the length direction of arm-tie 8 is provided with connecting through hole, and the wherein other end (this end is preferably tabular) of waist rope 7 is hinged by connecting pin 71 and connecting through hole.
The setting of connecting through hole makes the attended operation of arm-tie 8 and waist rope 7 without the need to saving point of connection between arm-tie 8 by two, so can not affect the dismounting of arm-tie 8, makes the disassemble and assemble work of waist rope 7 more simple and direct, quick thus further.
As one preferably or alternatively embodiment, connect pedestal 6 and be fixedly connected with on (being preferably welding) main chord 91 bottom jib 9.Welded structure has compact conformation, the advantage that Joint strenght is high.
The middle part of the side of the present invention rope 7 not necessarily needs to adopt the mode being welded to connect hinge to be connected on main chord 91, any mode that waist rope 7 can be connected to jib 9, such as: can weld two adapter plates respectively on the main chord and arm-tie 8 of jib 9, waist rope is bundled between two adapter plates by rope or chain.
As one preferably or alternatively embodiment, connect pedestal 6 and comprise bed plate 61, connecting panel 62, adapter shaft 63 and hanging part 64, wherein:
On the main chord 91 that bed plate 61 is fixedly connected with (be preferably welding) bottom jib 9.
Connecting panel 62 is fixedly connected on bed plate 61, and connecting panel 62 is provided with hinge hole, adapter shaft (can adopt bolt to realize) 63 runs through hinge hole, hanging part 64 is in inner concavity, and the end at the two ends of hanging part 64 is provided with end vias and is hinged by the two ends that end vias and adapter shaft 63 extend hinge hole.
Wherein one end of waist rope 7 is ring-type (being preferably shackle) and this end mounts with hanging part 64 phase.
Connecting panel 62 is convenient to arrange hinge hole.Hanging part 64 preferably takes the shape of the letter U.
As one preferably or alternatively embodiment, the other end of waist rope 7 is tabular and is provided with waist rope through hole, and connecting pin 71 runs through the connecting through hole on waist rope through hole and arm-tie 8.
Connecting pin 71 is convenient to dismounting, and connecting pin 71 and waist rope through hole with the connection formed between the connecting through hole on arm-tie 8 for being flexibly connected, be convenient to adjust waist rope 7 position.
As one preferably or alternatively embodiment, this waist rope connecting device being used for carrying jib comprises two arm-ties 8, two main chords 91 are provided with bottom jib 9, every root main chord 91 is all fixedly connected with and connects pedestal 6, waist rope 7 comprises two relative chains of position, article two, in chain, one of them is connected with the connection pedestal 6 that two main chords 91 wherein a main chord 91 are fixedly connected with, and in two chains, wherein another is connected with the connection pedestal 6 that two main chords 91 wherein another root main chord 91 are fixedly connected with.
Two chains included by waist rope 7 can be balanced the weight sharing jib 9, contribute to improving carrying, pull the stationarity of safety in jib 9 process and jib 9.
As one preferably or alternatively embodiment, waist rope 7 also comprises rigid link 72, and every bar chain includes to be connected with arm-tie 8 front section 731 and the hindfoot portion 732 that is connected with the connection pedestal 6 that main chord 91 is fixedly connected with separately, wherein:
Wherein one end of rigid link 72 is installed with the first plate-like portion 721, and the wherein other end of rigid link 72 is installed with the second plate-like portion 722.
Article two, in chain, wherein the front section 731 of a chain is connected by the first plate-like portion 721 with the hindfoot portion 732 of this chain.
Article two, in chain, wherein the front section 731 of another chain is connected by the second plate-like portion 722 with the hindfoot portion 732 of this chain.
Spacing dimension between two chains that the arranging of rigid link 72 can limit included by waist rope 7, and limit two chains along the distance that jib 9 Width moves.
As one preferably or alternatively embodiment, the two ends that in two chains, wherein the front section 731 of a chain is relative with the first plate-like portion 721 position respectively with the hindfoot portion 732 of this chain are hinged.
Article two, the two ends that in chain, wherein the front section 731 of another chain is relative with the second plate-like portion 722 position respectively with the hindfoot portion 732 of this chain are hinged.
The attended operation of chain is convenient in the setting of plate-like portion.
As one preferably or alternatively embodiment, in two chains wherein the front section 731 of a chain length direction with in two chains wherein the length direction of the front section 731 of another chain parallel.
The pulling force in this structure, two chains born is more balanced.
As one preferably or alternatively embodiment, in two chains wherein in the front section 731 of a chain and two chains wherein another chain front section 731 between spacing be not more than spacing dimension between two main chords 91.
Because the width dimensions between two arm-ties 8 is not more than the spacing dimension between two main chords 91 usually, so this design can make the component of the pulling force that arm-tie 8 bears be mainly power on vertical direction, the component avoiding horizontal direction upper pulling force is too large, and causes arm-tie 8 or waist rope 7 to damage.
Certainly, under the prerequisite not affecting arm-tie 8 job security, any waist rope connection mode not affecting arm-tie 8 dismounting all can in order to realize goal of the invention of the present invention.
Arbitrary technical scheme disclosed in the invention described above unless otherwise stated, if the number range of it discloses, so disclosed number range is preferred number range, anyly it should be appreciated by those skilled in the art: preferred number range is only the numerical value that in many enforceable numerical value, technique effect is obvious or representative.Because numerical value is more, cannot be exhaustive, so the present invention just discloses component values with casehistory technical scheme of the present invention, and the above-mentioned numerical value enumerated should not form the restriction to the invention protection domain.
Simultaneously, if the invention described above discloses or relate to parts or the framing member of connection fastened to each other, so, unless otherwise stated, be fixedly connected with and can be understood as: can releasably be fixedly connected with (such as using bolt or screw to connect), also can be understood as: to be non-removablely fixedly connected with (such as rivet, weld), certainly, connection fastened to each other also can be replaced by integral type structure (such as use foundry technique is integrally formed create) (obviously cannot adopt except integrally formed technique).
In addition, apply in arbitrary technical scheme disclosed in the invention described above for represent position relationship or shape term unless otherwise stated its implication comprise approximate with it, similar or close state or shape.Arbitrary parts provided by the invention both can be assembled by multiple independent component part, and also can be one of the forming manufacture technics separate part out.
Finally should be noted that: above embodiment is only in order to illustrate that technical scheme of the present invention is not intended to limit; Although with reference to preferred embodiment to invention has been detailed description, those of ordinary skill in the field are to be understood that: still can modify to the specific embodiment of the present invention or carry out equivalent replacement to portion of techniques feature; And not departing from the spirit of technical solution of the present invention, it all should be encompassed in the middle of the technical scheme scope of request of the present invention protection.

Claims (7)

1. for carrying a waist rope connecting device for jib, it is characterized in that, comprising waist rope (7), connecting pedestal (6) and arm-tie (8), wherein:
Wherein one end of described waist rope (7) removably connects with the described pedestal (6) that is connected, and the wherein other end of described waist rope (7) is connected with described arm-tie (8);
Described connection pedestal (6) is fixedly connected on the medium position on crane arm joint jib (9) bottom lengths direction wherein;
Medium position on the length direction of described arm-tie (8) is provided with connecting through hole, and the wherein other end of described waist rope (7) is hinged by connecting pin (71) and described connecting through hole;
Described connection pedestal (6) is fixedly connected on the medium position on main chord (91) length direction of described jib (9) bottom;
Described connection pedestal (6) comprises bed plate (61), connecting panel (62), adapter shaft (63) and hanging part (64), wherein:
Described bed plate (61) is fixedly connected on the main chord (91) of described jib (9) bottom;
Described connecting panel (62) is fixedly connected on described bed plate (61), and described connecting panel (62) is provided with hinge hole, described adapter shaft (63) runs through described hinge hole, described hanging part (64) is in inner concavity, and the end at the two ends of described hanging part (64) is provided with end vias and is hinged by the two ends that described end vias and described adapter shaft (63) extend described hinge hole;
Wherein one end of described waist rope (7) is ring-type and this end mounts mutually with described hanging part (64).
2. the waist rope connecting device for carrying jib according to claim 1, it is characterized in that, the other end of described waist rope (7) is tabular and is provided with waist rope (7) through hole, and described connecting pin (71) runs through the described connecting through hole on described waist rope (7) through hole and described arm-tie (8).
3. the waist rope connecting device for carrying jib according to claim 2, it is characterized in that, this waist rope (7) connecting device being used for carrying jib comprises two described arm-ties (8), described jib (9) bottom is provided with two described main chords (91), wherein:
Main chord (91) described in every root is all fixedly connected with described connection pedestal (6), described waist rope (7) comprises two relative chains of position, article two, in described chain, one of them is connected with the described pedestal (6) that is connected that two described main chords (91) wherein a described main chord (91) are fixedly connected with, and in two described chains, wherein another is connected with the described pedestal (6) that is connected that two described main chords (91) wherein main chord (91) described in another root are fixedly connected with.
4. the waist rope connecting device for carrying jib according to claim 3, it is characterized in that, described waist rope (7) also comprises rigid link (72), chain described in every bar include separately the front section (731) that is connected with described arm-tie (8) and with the described hindfoot portion (732) being connected pedestal (6) and being connected that described main chord (91) is fixedly connected with, wherein:
Wherein one end of described rigid link (72) is installed with the first plate-like portion (721), and the wherein other end of described rigid link (72) is installed with the second plate-like portion (722);
Article two, in described chain, wherein the front section (731) of a described chain is connected by described first plate-like portion (721) with the hindfoot portion (732) of this chain;
Article two, in described chain, wherein the front section (731) of another described chain is connected by described second plate-like portion (722) with the hindfoot portion (732) of this chain.
5. the waist rope connecting device for carrying jib according to claim 4, it is characterized in that, the two ends that in two described chains, wherein the front section (731) of a described chain is relative with described first plate-like portion (721) position respectively with the hindfoot portion (732) of this chain are hinged;
Article two, the two ends that in described chain, wherein the front section (731) of another described chain is relative with described second plate-like portion (722) position respectively with the hindfoot portion (732) of this chain are hinged.
6. the waist rope connecting device for carrying jib according to claim 5, it is characterized in that, in two described chains wherein the front section (731) of a described chain length direction with in two described chains wherein the length direction of the front section (731) of another described chain parallel.
7. the waist rope connecting device for carrying jib according to claim 6, it is characterized in that, in two described chains wherein in the front section (731) of a described chain and two described chains wherein another described chain front section (731) between spacing be not more than spacing dimension between two described main chords (91).
CN201310047299.1A 2013-02-06 2013-02-06 Auxiliary bracing connection device for carrying arm support CN103112786B (en)

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