CN202704897U - Folding arm type super-lift counterweight amplitude varying device for crawler crane - Google Patents
Folding arm type super-lift counterweight amplitude varying device for crawler crane Download PDFInfo
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- CN202704897U CN202704897U CN 201220310294 CN201220310294U CN202704897U CN 202704897 U CN202704897 U CN 202704897U CN 201220310294 CN201220310294 CN 201220310294 CN 201220310294 U CN201220310294 U CN 201220310294U CN 202704897 U CN202704897 U CN 202704897U
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- balance weight
- crawler crane
- starting balance
- folding arm
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Abstract
The utility model relates to a folding arm type super-lift counterweight amplitude varying device for a crawler crane. The folding arm type super-lift counterweight amplitude varying device comprises a super-lift master arranged on the crawler crane; the super-lift master is connected with a super-lift counterweight of the crawler crane by a super-lift counterweight pulling plate; a super-lift counterweight amplitude varying device is arranged between the super-lift counterweight and the crawler crane; and the super-lift counterweight amplitude varying device comprises a first folding arm frame and a second folding arm frame; a connecting end of the first folding arm frame is connected with the crawler crane; the connecting end of the second folding arm frame is connected with the super-lift counterweight pulling plate; a movable end of the first folding arm frame is movably connected with the movable end of the second folding arm frame; and a telescopic oil cylinder is also arranged between the first folding arm frame and the second folding arm frame. By adopting the folding arm type super-lift counterweight amplitude varying device for the crawler crane, the angle of a main arm is not required to be adjusted again, so that the operation in the whole process is simpler; and the super-lift counterweight can be subjected to a large-scale amplitude variation by setting a fixing point at the rear part of a rotary table.
Description
Technical field
The utility model relates to a kind of luffing mechanism of crawler crane, particularly relates to a kind of foldable arm super-starting balance weight luffing device for crawler crane.
Background technology
Crawler crane is the truss-type cantilever crane structure hoisting crane that adopts caterpillar band traveling chassis.Super-starting balance weight luffing device on the crawler crane is comprised of the horizontal support device that has surpassed mast, super-starting balance weight arm-tie and super-starting balance weight of crawler crane.
Super-starting balance weight luffing function also is the basic function of large-scale crawler crane indispensability, and its luffing device version has determined the comfort feature that its luffing function realizes, and then has determined the operability of hoisting crane.
Traditional super-starting balance weight luffing mainly contains two kinds of versions at present, as depicted in figs. 1 and 2:
Traditional the first version is to have surpassed mast 10 directly to drive super-starting balance weight 20 luffings, as shown in Figure 1, and traditional the second version, it also is the prior art of commonly using, to hang by having surpassed mast 10, horizontal support 31 and level luffing oil cylinder 32 luffings, as shown in Figure 2.
Referring to Fig. 2, in the conventional confguration form, horizontal support 31 and level luffing oil cylinder 32 are arranged point-blank, and, the attachment point of horizontal support 31 on rotating platform of crane in the conventional confguration form is former and later two points, that is: the first horizontal support attachment point 61 and the second horizontal support attachment point 62, as shown in Figure 2, therefore, need to adjust in real time according to the difference that surpasses radius.
The defective of above-mentioned prior art is:
Adopt the shortcoming of traditional the first version to be: 1, in the process of super-starting balance weight luffing, having surpassed mast 10 can change with respect to the position relationship of complete machine, thereby affecting the principal arm angle also changes, therefore just need to readjust the angle of principal arm, so that the operation of whole process becomes very complicated; 2, in the process of super-starting balance weight 20 luffings, the upper hinge height change that has surpassed mast 10 is very large, cause super-starting balance weight 20 height change very large, therefore for the super-starting balance weight arm-tie 40 of a certain regular length, guarantee super-starting balance weight 20 height in rational scope, the amplitude that has surpassed the mast luffing can be very little; Luffing need to be adjusted the length of super-starting balance weight arm-tie 40 by a relatively large margin, and it is very large that the high-altitude connects the arm-tie difficulty.
Adopt the shortcoming of traditional the second version to be: to want the luffing scope that reaches larger, just must use long level luffing oil cylinder 32, also just must be equipped with long horizontal support 31, be used for holding level luffing oil cylinder 32.Because the back space of crawler crane is very limited, can not arrange long oil cylinder and support, can only use short oil cylinder and support, then a plurality of attachment points that arrange at turntable by horizontal support 31 (for example the first horizontal support attachment point 61 among Fig. 2 and the second horizontal support attachment point 62) are adjusted, to satisfy the different demands that surpassed radius.This has also brought the little problem of luffing scope under the once mounting condition, and the applicable working condition scope of hoisting crane is had a greatly reduced quality.
The utility model content
The purpose of this utility model is to propose the enough less oil cylinders of a kind of energy, once mounting realizes super-starting balance weight at luffing by a relatively large margin, and guarantees the foldable arm super-starting balance weight luffing device that is used for crawler crane that the super-starting balance weight height changes in a less scope.
For achieving the above object, the utility model provides a kind of foldable arm super-starting balance weight luffing device for crawler crane, comprise the mast that surpassed that is arranged on the crawler crane, having surpassed mast links to each other with the super-starting balance weight of crawler crane by the super-starting balance weight arm-tie, between described super-starting balance weight and crawler crane, be provided with the super-starting balance weight luffing device, described super-starting balance weight luffing device comprises the first foldable arm rack that coupling end links to each other with crawler crane, the second foldable arm rack that coupling end links to each other with the super-starting balance weight arm-tie, the movable end of the movable end of described the first foldable arm rack and the second foldable arm rack is flexibly connected, and also is provided with telescopic oil cylinder between the first foldable arm rack and the second foldable arm rack.
Preferably, described the second foldable arm rack is provided with protrusion, and the upper end of described telescopic oil cylinder links to each other with this protrusion.
More preferably, the coupling end of the bottom of described telescopic oil cylinder and the first foldable arm rack is co-located on the crawler crane.
Preferably, described super-starting balance weight luffing device is fixed on the host platform afterbody of crawler crane.
Preferably, described telescopic oil cylinder links to each other with the control mechanism of crawler crane.
Preferably, described super-starting balance weight arm-tie is provided with protruding part, and the coupling end of the second foldable arm rack links to each other with described protruding part.
Based on technique scheme, the utility model has the advantages that:
(1) the relative position of host machine of mast that surpassed of the present utility model is fixed, and need not to readjust the angle of principal arm, so that the operation of whole super-starting balance weight amplitude changing process becomes simpler.
(2) the utility model can guarantee that the super-starting balance weight height change is very little in the large luffing scope of super-starting balance weight, need not to regulate super-starting balance weight arm-tie length.
(3) the utility model has adopted collapsible two joint jib structures, make luffing device that an attachment point only is set at the turntable rear portion and just realized super-starting balance weight luffing on a large scale, remove the trouble that needs to change the support attachment point in the prior art from, expanded the Applicable scope of hoisting crane.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present utility model, consists of the application's a part, and illustrative examples of the present utility model and explanation thereof are used for explaining the utility model, do not consist of improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 is the scheme drawing of a kind of version in the prior art;
Fig. 2 is the scheme drawing of another kind of version in the prior art
Fig. 3 is structural representation of the present utility model;
Fig. 4 is the enlarged diagram of A among Fig. 3.
The specific embodiment
Below by drawings and Examples, the technical solution of the utility model is described in further detail.
Referring to Fig. 3, the preferred embodiment of a kind of foldable arm super-starting balance weight luffing device for crawler crane of the utility model shown in it, foldable arm super-starting balance weight luffing device of the present utility model comprises being arranged at and has surpassed mast 10 on the crawler crane, having surpassed mast 10 links to each other with the super-starting balance weight 20 of crawler crane by super-starting balance weight arm-tie 40, between described super-starting balance weight arm-tie 40 and crawler crane, be provided with super-starting balance weight luffing device of the present utility model, further, described super-starting balance weight luffing device comprises the first foldable arm rack 51 that coupling end links to each other with crawler crane, the second foldable arm rack 52 that coupling end links to each other with super-starting balance weight arm-tie 40, the movable end of the movable end of described the first foldable arm rack 51 and the second foldable arm rack 52 is flexibly connected, and also is provided with telescopic oil cylinder 53 between the first foldable arm rack 51 and the second foldable arm rack 52.In other words, the coupling end of the first foldable arm rack 51 links to each other with crawler crane, and the movable end of the movable end of the first foldable arm rack 51 and the second foldable arm rack 52 is flexibly connected, and the coupling end of the second foldable arm rack 52 links to each other with super-starting balance weight arm-tie 40, as shown in Figure 3.
One end of described telescopic oil cylinder 53 is connected on the first foldable arm rack 51, and the other end links to each other with the second foldable arm rack 52, and preferably, in the present embodiment, described the second foldable arm rack 52 is provided with protrusion, and the upper end of described telescopic oil cylinder 53 links to each other with this protrusion.By this protrusion so that telescopic oil cylinder 53 after stretching out by a relatively large margin, can will be stretched to as much as possible the degree that is similar to straight line between the first foldable arm rack 51 and the second foldable arm rack 52, thereby improved the amplitude of luffing, as described in Figure 3, wherein show the luffing device form of luffing front and back, crooked form is the retracted mode of telescopic oil cylinder 53, and it is that telescopic oil cylinder 53 stretches out state that the first foldable arm rack 51 and the second foldable arm rack 52 are the form that is similar to straight line.
Further, the coupling end of the bottom of described telescopic oil cylinder 53 and the first foldable arm rack 51 is co-located on the crawler crane, for example, in the present embodiment, the super-starting balance weight luffing device is fixed on the host platform afterbody of crawler crane, as shown in Figure 3, make luffing device of the present utility model that an attachment point only need to be set at the turntable rear portion and just realized super-starting balance weight luffing on a large scale, removed the trouble that needs to change the support attachment point in the prior art from, also remove the trouble of adjusting super-starting balance weight arm-tie length in the prior art from, also expanded the Applicable scope of hoisting crane.
Preferably, referring to Fig. 4, the coupling end that described super-starting balance weight arm-tie 40 is provided with protruding part 41, the second foldable arm racks 52 links to each other with described protruding part 41.By this protruding part 41 so that the second foldable arm rack 52 after stretching out by a relatively large margin, can be stretched over super-starting balance weight arm-tie 40 maximum distance as much as possible, thereby improved the amplitude of luffing.More preferably, the coupling end place of described the second foldable arm rack 52 is provided with downward warp architecture, as shown in Figure 4, is convenient to connection and stretching exercise between the second foldable arm rack 52 and the protruding part 41.
For the ease of control, preferably, telescopic oil cylinder 53 described in the utility model links to each other with the control mechanism (not shown) of crawler crane.
Should be noted that at last: above embodiment is only in order to illustrate that the technical solution of the utility model is not intended to limit; Although with reference to preferred embodiment the utility model is had been described in detail, those of ordinary skill in the field are to be understood that: still can make amendment or the part technical characterictic is equal to replacement the specific embodiment of the present utility model; And not breaking away from the spirit of technical solutions of the utility model, it all should be encompassed in the middle of the technical scheme scope that the utility model asks for protection.
Claims (6)
1. foldable arm super-starting balance weight luffing device that is used for crawler crane, comprise being arranged at and surpassed mast (10) on the crawler crane, having surpassed mast (10) links to each other with the super-starting balance weight (20) of crawler crane by super-starting balance weight arm-tie (40), between described super-starting balance weight (20) and crawler crane, be provided with the super-starting balance weight luffing device, it is characterized in that: described super-starting balance weight luffing device comprises the first foldable arm rack (51) that coupling end links to each other with crawler crane, the second foldable arm rack (52) that coupling end links to each other with super-starting balance weight arm-tie (40), the movable end of the movable end of described the first foldable arm rack (51) and the second foldable arm rack (52) is flexibly connected, and also is provided with telescopic oil cylinder (53) between the first foldable arm rack (51) and the second foldable arm rack (52).
2. foldable arm super-starting balance weight luffing device according to claim 1, it is characterized in that: described the second foldable arm rack (52) is provided with protrusion, and the upper end of described telescopic oil cylinder (53) links to each other with this protrusion.
3. foldable arm super-starting balance weight luffing device according to claim 1 and 2, it is characterized in that: the coupling end of the bottom of described telescopic oil cylinder (53) and the first foldable arm rack (51) is co-located on the crawler crane.
4. foldable arm super-starting balance weight luffing device according to claim 3, it is characterized in that: described super-starting balance weight luffing device is fixed on the host platform afterbody of crawler crane.
5. foldable arm super-starting balance weight luffing device according to claim 1, it is characterized in that: described telescopic oil cylinder (53) links to each other with the control mechanism of crawler crane.
6. foldable arm super-starting balance weight luffing device according to claim 1, it is characterized in that: described super-starting balance weight arm-tie (40) is provided with protruding part (41), and the coupling end of the second foldable arm rack (52) links to each other with described protruding part (41).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220310294 CN202704897U (en) | 2012-06-29 | 2012-06-29 | Folding arm type super-lift counterweight amplitude varying device for crawler crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220310294 CN202704897U (en) | 2012-06-29 | 2012-06-29 | Folding arm type super-lift counterweight amplitude varying device for crawler crane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202704897U true CN202704897U (en) | 2013-01-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220310294 Expired - Lifetime CN202704897U (en) | 2012-06-29 | 2012-06-29 | Folding arm type super-lift counterweight amplitude varying device for crawler crane |
Country Status (1)
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| CN (1) | CN202704897U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102718159A (en) * | 2012-06-29 | 2012-10-10 | 徐工集团工程机械股份有限公司 | Folding-arm-type super lifting counter weight amplitude variation device for crawler crane |
| CN104071712A (en) * | 2014-07-10 | 2014-10-01 | 太原重工股份有限公司 | Large-tonnage crawler crane |
-
2012
- 2012-06-29 CN CN 201220310294 patent/CN202704897U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102718159A (en) * | 2012-06-29 | 2012-10-10 | 徐工集团工程机械股份有限公司 | Folding-arm-type super lifting counter weight amplitude variation device for crawler crane |
| CN104071712A (en) * | 2014-07-10 | 2014-10-01 | 太原重工股份有限公司 | Large-tonnage crawler crane |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130130 |
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| CX01 | Expiry of patent term |