CN204625032U - Waist rope structure - Google Patents
Waist rope structure Download PDFInfo
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- CN204625032U CN204625032U CN201520062714.5U CN201520062714U CN204625032U CN 204625032 U CN204625032 U CN 204625032U CN 201520062714 U CN201520062714 U CN 201520062714U CN 204625032 U CN204625032 U CN 204625032U
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- waist rope
- jib
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- hinged
- waist
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Abstract
The utility model discloses a kind of waist rope structure, it is characterized in that comprising waist rope, connecting device, one end of its middle part of the side rope is connected with the end of connecting device, and the other end of waist rope is connected with arm-tie; Described connecting device is placed in the inside of jib, and connecting device is connected by the web member of flexible connection body with jib top.The utility model improves the stability of waist rope, and waist rope entirety is not touched with jib, improves the service life of jib and waist rope.
Description
Technical field
The utility model relates to technical field of engineering machinery, is specifically related to a kind of for waist rope structure.
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: problem 1, waist rope 2 are deposited on jib 4, jib 5 when arm-tie 3 drops on jib 5 as shown in Figure 3, 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
For above-mentioned existing issue, the utility model provides a kind of waist rope structure, solves prior art and there is waist rope and easily collide with jib, cause the technical matters that jib service life is short, and structure simply, with low cost.
To achieve these goals, the waist rope structure that the utility model provides comprises waist rope, connecting device, and one end of its middle part of the side rope is connected with the end of connecting device, and the other end of waist rope is connected with described arm-tie;
Described connecting device is placed in the inside of jib, and connecting device is connected by the web member of flexible connection body with jib top.
As one preferably or alternatively embodiment, described connecting device by chain and main chord hinged.
As preferably a kind of or alternatively described in embodiment connecting device two ends, all there are laterally zygomorphic two connecting bores, one end of waist rope by connecting pin and upper connecting bore hinged;
One end and the lower connecting bore of flexible connection body are hinged, and the other end and the main chord of flexible connection body are hinged.
As one preferably or alternatively embodiment, described waist rope structure comprises two described arm-ties, is provided with two described main chords bottom described jib, wherein:
Described waist rope comprises two relative chains of position, and in two described chains, the upper connecting bore of one of them and connecting device one end cuts with scissors, and in two described chains, wherein the upper connecting bore of another and the connecting device other end is hinged.
As one preferably or alternatively embodiment, described flexible connection body is chain or rope;
As one preferably or alternatively embodiment, described connecting device has two otic placodes, the web member at elevator boom rack top has diplopore otic placode, one end of flexible connection body and connecting device otic placode hinged, on the other end and web member, a hole of diplopore otic placode is hinged.
As one preferably or alternatively embodiment, described connecting device is a trapezoidal waist rope support, trapezoidal upper base has two otic placodes, the web member at elevator boom rack top has diplopore otic placode, one end of flexible connection body and connecting device otic placode hinged, on the other end and web member, a hole of diplopore otic placode is hinged, and trapezoidal main chord of going to the bottom is fixedly connected with.
As one preferably or alternatively embodiment, the two ends of going to the bottom of described waist rope support have pin rod, and hinged by the main chord bottom pin rod and jib.
As one preferably or alternatively embodiment, it is characterized in that, described waist rope support inside is provided with reinforcing
As one preferably or alternatively embodiment, upper base two ends and the waist rope of described waist rope support bar are hinged, and described waist rope is hoisting chain:
Based on technique scheme, the utility model embodiment at least can produce following technique effect:
The waist rope structure that the utility model provides, one end of waist rope is connected with the end of connecting device, and the other end of waist rope is connected with described arm-tie, connecting device is placed in the inside of jib, connecting device is connected by the web member of flexible connection body with jib top, when waist rope normally uses, waist rope is in tensioned state, when jib falls, when waist rope is in relaxed state, because connecting device is by flexible connection body (preferably chain, certain steel rope and so on also can) be connected with the web member at jib top, connecting device is made to be in fixing of flexible connection body, connecting device is made to keep a minimum height, the chain that connecting device is connected with main chord keeps certain Zhang Jindu in jib, thus jib can not produce stacking phenomenon.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.Certainly, because connecting device can be the waist rope support of trapezium structure, by the connection of flexible connection body, make waist rope support remain in certain spatial dimension, larger offset phenomena can not be produced, then avoid waist rope support and jib comes in contact collision equivalent damage; Next also helps the waist rope changed above connecting device, and while replacing, due to the guarantee of the minimum altitude of connecting device, waist rope can not produce with jib and touch.
In addition, because waist rope support is trapezoidal structure, its fastness is good, convenient disassembly, and owing to not being flexible serobila, rocking property is low, by three reinforcing rods of waist rope support inside, can meet the overall result of use of waist rope.
Accompanying drawing explanation
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;
Fig. 6 is the constructional drawing of a kind of embodiment of the utility model;
Fig. 7 is the schematic diagram of Fig. 6 in waist rope off working state;
Fig. 8 is the constructional drawing of waist rope and link span;
Fig. 9 is the integrality figure of the another kind of embodiment of the utility model;
Figure 10 is the integrality figure of Fig. 6.
Reference numeral: 1, crane arm; 2, waist rope; 3, arm-tie; 4, jib; 5, jib; 6, waist rope; 71, link span; 72, waist rope support; ; 8, flexible connection body; 9, jib; 91, main chord; 92, web member, 10, chain.
Detailed description of the invention
Below by accompanying drawing 6 ~ Figure 10 and the mode enumerating embodiment more of the present utility model, the technical solution of the utility model (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 utility model 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 protection domain of the present utility model, protection domain of the present utility model should comprise those skilled in the art and not pay the thinkable any alternate embodiments of creative work.
The utility model embodiment provides a kind of waist rope connecting device reducing waist rope and jib and collide.
Below in conjunction with the elaboration that Fig. 6 ~ Figure 10 carries out specifically to the technical scheme that the utility model provides, the technical scheme that two or more technological means that the arbitrary technological means provided by the utility model carries out replacing or provided by the utility model are carried out mutually combining and obtained all should within protection domain of the present utility model.
As shown in Fig. 6 ~ Figure 10, the waist rope structure that the utility model embodiment provides comprises waist rope structure and comprises waist rope, connecting device, and one end of its middle part of the side rope is connected with the end of connecting device, and the other end of waist rope is connected with arm-tie;
Described connecting device is placed in the inside of jib, and connecting device is connected with the web member 92 at jib top by flexible connection body 8.
Wherein connecting device can be link span 71, and link span 71 two ends all have laterally zygomorphic two connecting bores, one end of waist rope 6 by connecting pin and upper connecting bore hinged;
As one preferably or alternatively embodiment, link span 71 cross chain and main chord 91 hinged.
As preferably a kind of or alternatively described in embodiment link span 71 two ends, all there are laterally zygomorphic two connecting bores, one end of waist rope 6 by connecting pin and upper connecting bore hinged;
One end and the lower connecting bore of flexible connection body are hinged, and the other end and the main chord 91 of flexible connection body 8 are hinged.
As one preferably or alternatively embodiment, bottom described jib 9, be provided with two described main chords 91, wherein:
Described waist rope 6 comprises two relative chains of position, and in two described chains 6, the upper connecting bore of one of them and link span 71 one end cuts with scissors, and in two described chains, wherein the upper connecting bore of another and link span 71 other end is hinged.
As one preferably or alternatively embodiment, described flexible connection body 8 is chain or rope;
As one preferably or alternatively embodiment, described link span 71 has two otic placodes, the web member 92 at elevator boom rack top has diplopore otic placode, one end of flexible connection body 8 and an otic placode of link span 71 hinged, on the other end and web member 92, a hole of diplopore otic placode is hinged.
As one preferably or alternatively embodiment, described connecting device is a trapezoidal waist rope support 72, trapezoidal upper base has two otic placodes, the web member 92 at elevator boom rack 9 top has diplopore otic placode, a hole of one end of flexible connection body 8 and the diplopore otic placode of waist rope support 72 is hinged, and trapezoidal main chord 91 of going to the bottom is fixedly connected with.
As one preferably or alternatively embodiment, the two ends of going to the bottom of described waist rope support 72 have pin rod, and hinged by the main chord 91 bottom pin rod and jib 9.
As one preferably or alternatively embodiment, it is characterized in that, described waist rope support 72 inside is provided with reinforcing rod
As one preferably or alternatively embodiment, upper base two ends and the waist rope 6 of described waist rope support 72 connect, and described waist rope is hoisting chain.
If above-mentioned the utility model 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 above-mentioned the utility model for represent position relationship or shape term unless otherwise stated its implication comprise approximate with it, similar or close state or shape.Arbitrary parts that the utility model provides 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 the technical solution of the utility model is not intended to limit; Although be described in detail the utility model with reference to preferred embodiment, those of ordinary skill in the field have been to be understood that: still can modify to detailed description of the invention of the present utility model or carry out equivalent replacement to portion of techniques feature; And not departing from the spirit of technical solutions of the utility model, it all should be encompassed in the middle of the technical scheme scope of the utility model request protection.
Claims (9)
1. a waist rope structure, is characterized in that comprising waist rope, connecting device, and one end of its middle part of the side rope is connected with the end of connecting device, and the other end of waist rope is connected with arm-tie;
Described connecting device is placed in the inside of jib, and connecting device is connected by the web member of flexible connection body with jib top.
2. a kind of waist rope structure according to claim 1, is characterized in that, described connecting device by chain and main chord hinged.
3. a kind of waist rope structure according to claim 2, is characterized in that, described connecting device two ends all have laterally zygomorphic two connecting bores, one end of waist rope by connecting pin and upper connecting bore hinged;
One end and the lower connecting bore of flexible connection body are hinged, and the other end and the main chord of flexible connection body are hinged.
4. a kind of waist rope structure according to claim 2, is characterized in that, is provided with two described main chords bottom jib, wherein:
Described waist rope comprises two relative chains of position, and in two described chains, the upper connecting bore of one of them and connecting device one end cuts with scissors, and in two described chains, wherein the upper connecting bore of another and the connecting device other end is hinged.
5. a kind of waist rope structure according to claim 1, is characterized in that, described flexible connection body is chain or rope;
Described connecting device has two otic placodes, and the web member at elevator boom rack top has diplopore otic placode, one end of flexible connection body and connecting device otic placode hinged, on the other end and web member, a hole of diplopore otic placode is hinged.
6. a kind of waist rope structure according to claim 1, it is characterized in that, described connecting device is a trapezoidal waist rope support, trapezoidal upper base has two otic placodes, the web member at elevator boom rack top has diplopore otic placode, one end of flexible connection body and connecting device otic placode hinged, on the other end and web member, a hole of diplopore otic placode is hinged, and trapezoidal going to the bottom is fixedly connected with main chord.
7. a kind of waist rope structure according to claim 6, is characterized in that, the two ends of going to the bottom of described waist rope support have pin rod, and hinged by the main chord bottom pin rod and jib.
8. a kind of waist rope structure according to claim 6, is characterized in that, described waist rope support inside is provided with reinforcing.
9. a kind of waist rope structure according to claim 6, is characterized in that, upper base two ends and the waist rope of described waist rope support bar are hinged, and described waist rope is hoisting chain.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520062714.5U CN204625032U (en) | 2015-01-29 | 2015-01-29 | Waist rope structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520062714.5U CN204625032U (en) | 2015-01-29 | 2015-01-29 | Waist rope structure |
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| CN204625032U true CN204625032U (en) | 2015-09-09 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104692265A (en) * | 2015-01-29 | 2015-06-10 | 徐工集团工程机械股份有限公司 | Waist rope structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104692265A (en) * | 2015-01-29 | 2015-06-10 | 徐工集团工程机械股份有限公司 | Waist rope structure |
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