CN105129631A - Variable-amplitude auxiliary arm support of crawler crane and crawler crane - Google Patents
Variable-amplitude auxiliary arm support of crawler crane and crawler crane Download PDFInfo
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- CN105129631A CN105129631A CN201510528332.1A CN201510528332A CN105129631A CN 105129631 A CN105129631 A CN 105129631A CN 201510528332 A CN201510528332 A CN 201510528332A CN 105129631 A CN105129631 A CN 105129631A
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- auxiliary arm
- amplitude auxiliary
- amplitude
- arm support
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Abstract
The invention discloses a variable-amplitude auxiliary arm support of a crawler crane and the crawler crane. The variable-amplitude auxiliary arm support comprises a variable-amplitude auxiliary arm support body (9), a hoisting steel wire rope guide pulley block (10) and a variable-amplitude steel wire rope winding pulley block (11), wherein the hoisting steel wire rope guide pulley block (10) and the variable-amplitude steel wire rope winding pulley block (11) are arranged in the middle and the top of the variable-amplitude auxiliary arm support body respectively. The variable-amplitude auxiliary arm support body is of a variable-section double-supporting-leg box type structure composed of a first variable-amplitude auxiliary arm supporting leg (9-3) and a second variable-amplitude auxiliary arm supporting leg (9-4) which are arranged on the two sides respectively. The variable-section structural form is adopted, so that the self weight of the variable-amplitude auxiliary arm support is low, the generated overturning moment is small, the arm lifting difficulty of the whole crane is correspondingly lowered, and the hoisting performance of the overall crane can be correspondingly improved. Manufacturing cost and transport cost are reduced. The overturning angle of a variable-amplitude auxiliary arm can be delayed, and the design difficulty and cost for a back tipping prevention device can be reduced. Relative thrust provided by the back tipping prevention device is small, and damage to the variable-amplitude auxiliary arm is remarkably reduced.
Description
Technical field
The present invention relates to a kind of crawler crane variable-amplitude auxiliary arm support and crawler crane, specifically a kind of variable cross-section form box crawler crane variable-amplitude auxiliary arm support and adopt the crawler crane of this variable-amplitude auxiliary arm support.
Background technology
Crawler crane adopts caterpillar band traveling chassis, weight can be worked the mechanical equipment being raised to certain altitude, and crawler crane, in order to improve its lifting altitude and work range, is usually directed to install variable-amplitude auxiliary arm.Along with national industry transition and the development of urbanization process, the fast development such as domestic and international high ferro, subway, urban construction, the crawler crane variable-amplitude auxiliary arm operating mode of medium and small tonnage is developed rapidly and is applied, it carries out the mobile construction in narrow range between highly developed city high rise building mansion, play the effect of tower crane, and be easy to quick travel again.Medium and small tonnage caterpiller crane, its variable-amplitude auxiliary arm support mostly is box-structure.
At present, crawler crane technology is more and more ripe, proposes requirements at the higher level to jib structure, requires that it is lightweight on the one hand, and require that load-carrying ability is high on the other hand, both is inherently conflicting.For this reason, each crawler crane manufactures commercial city when seeking a kind of load-carrying ability at guarantee jib structure, the method for lower arm shelf structure weight.Orthodox method is by reducing the overall weight of the method lower arm shelf structure of sheet material specification.Crawler crane technology due to jib weight ratio heavier, jib is just larger to the moment of center of gyration, and for the crawler crane determining tonnage, total hoisting moment is constant, and jib moment is large, and the hoisting capacity of lift heavy thing just has certain reduction.Such product cannot meet the high request of existing market to crawler crane product.
Playing arm is process boom system being lifted to required working condition position.Arm is played for crawler crane the most dangerous often.Worst operating mode.It is a very complicated process that variable-amplitude auxiliary arm operating mode plays arm, is also the most dangerous in all operating modes, and can the success or not playing arm be directly connected to and carry out operation, or even the danger such as framing member damages, complete machine is tumbled.The process playing arm is the process overcoming own wt, and the heavier difficulty that it plays arm of jib weight is larger.
When the crawler belt crane arm variable-amplitude auxiliary arm elevation angle is larger, its center of gravity more rearward, with whole variable-amplitude auxiliary arm system for research object is known, variable-amplitude auxiliary arm weight support frame is heavier, the danger of variable-amplitude auxiliary arm tipping backwards is also larger, actual in prevent variable-amplitude auxiliary arm hypsokinesis, is typically provided with anti-squat system.If variable-amplitude auxiliary arm weight support frame is heavier, elevation angle during variable-amplitude auxiliary arm generation tipping backwards is less, and this just needs anti-squat system earlier can provide pre-thrust to variable-amplitude auxiliary arm support, adds the difficulty of anti-squat system design; Variable-amplitude auxiliary arm support is heavier, and the moment of whole variable-amplitude auxiliary arm system tipping backwards is larger, and the thrust needing anti-squat system to provide is also larger, adds difficulty and the cost of anti-squat system design; The pre-thrust that anti-squat system applies is larger, larger to the infringement of variable-amplitude auxiliary arm support.
In the prior art, crawler crane box variable-amplitude auxiliary arm support is adopted to the mode of constant cross-section, the size in cross section designs by maximum cross-section required during maximum weighted, and its defect existed is as follows:
(1) the variable-amplitude auxiliary arm support own wt that cross section is fixing is heavier, and the capsizing moment produced is comparatively large, the arm difficulty that rises of complete machine is increased, the lifting performance of complete machine can be made to reduce;
(2) the variable-amplitude auxiliary arm support own wt that cross section is fixing is heavier, manufacturing cost and traffic cost higher;
(3) the variable-amplitude auxiliary arm support own wt that cross section is fixing is heavier, can make the angular advance that variable-amplitude auxiliary arm is tumbled, and increases difficulty and the cost of anti-squat system design;
(4) the variable-amplitude auxiliary arm support own wt that cross section is fixing is heavier, and the thrust that anti-squat system provides is comparatively large, larger to the damage of variable-amplitude auxiliary arm support.
Summary of the invention
For above-mentioned prior art Problems existing, the invention provides a kind of crawler crane variable-amplitude auxiliary arm support, significantly can alleviate the own wt of variable-amplitude auxiliary arm support, the capsizing moment produced is less, what reduce complete machine plays arm difficulty, increase the lifting performance of complete machine, reduce difficulty and the cost of anti-squat system design, reduce the damage to variable-amplitude auxiliary arm support.
To achieve these goals, this crawler crane variable-amplitude auxiliary arm support comprises variable-amplitude auxiliary arm support, and is arranged at hoist rope leading sheave group and the variable-amplitude steel wire rope winding assembly pulley at described variable-amplitude auxiliary arm mid-stent and top respectively;
Described variable-amplitude auxiliary arm support is be arranged at the variable-amplitude auxiliary arm supporting leg one of both sides and the two supporting leg box-structure of variable section of variable-amplitude auxiliary arm supporting leg two formation respectively.
Further, cross section, described variable-amplitude auxiliary arm support both ends is less than cross section, middle part.
Further, the afterbody sectional span of described variable-amplitude auxiliary arm support is greater than middle part sectional span, and the middle part sectional span of described variable-amplitude auxiliary arm support is greater than top cross-section span.
Meanwhile, present invention also offers a kind of crawler crane, comprise chassis system, principal arm and variable-amplitude auxiliary arm, and principal arm arm-tie and anti-squat system;
Between described principal arm and variable-amplitude auxiliary arm, arm-tie after arm-tie before variable-amplitude auxiliary arm and variable-amplitude auxiliary arm is provided with variable-amplitude auxiliary arm front frame and variable-amplitude auxiliary arm after poppet;
Described variable-amplitude auxiliary arm front frame and variable-amplitude auxiliary arm after poppet have employed the version of above-mentioned variable-amplitude auxiliary arm support.
Compared with prior art, this crawler crane variable-amplitude auxiliary arm support have employed the version of variable section, has following beneficial effect:
(1) the variable-amplitude auxiliary arm support own wt of variable cross-section form is comparatively light, and the capsizing moment produced is less, the arm difficulty that rises of complete machine is reduced accordingly, the lifting performance of complete machine can be made to increase accordingly;
(2) the variable-amplitude auxiliary arm support own wt of variable cross-section form is comparatively light, manufacturing cost and traffic cost lower;
(3) the variable-amplitude auxiliary arm support own wt of variable cross-section form is comparatively light, can postpone the angle that variable-amplitude auxiliary arm is tumbled, and can reduce difficulty and the cost of anti-squat system design;
(4) the variable-amplitude auxiliary arm support own wt of variable cross-section form is comparatively light, and the relative force that anti-squat system provides is less, significantly reduces the damage to variable-amplitude auxiliary arm support.
Equally, the crawler crane that have employed the variable-amplitude auxiliary arm support in the present invention also has above-mentioned beneficial effect.
Accompanying drawing explanation
Fig. 1 is crawler crane variable-amplitude auxiliary arm operating mode schematic diagram;
Fig. 2 is agent structure schematic diagram of the present invention;
Fig. 3 is the front view of Fig. 2;
Fig. 4 is the birds-eye view of Fig. 3;
Fig. 5 be in Fig. 4 A-A to cutaway view;
Fig. 6 be in Fig. 4 B-B to cutaway view;
Fig. 7 be in Fig. 4 C-C to cutaway view.
In figure: 1, chassis system, 2, principal arm, 3, variable-amplitude auxiliary arm, 4, arm-tie before variable-amplitude auxiliary arm, 5, variable-amplitude auxiliary arm variable-amplitude steel wire rope, 6, arm-tie after variable-amplitude auxiliary arm, 7, principal arm arm-tie, 8, anti-squat system, 9, variable-amplitude auxiliary arm support, 9-1, variable-amplitude auxiliary arm front frame, 9-2, variable-amplitude auxiliary arm after poppet, 9-3, variable-amplitude auxiliary arm supporting leg one, 9-4, variable-amplitude auxiliary arm supporting leg two, 10, hoist rope leading sheave group, 11, variable-amplitude steel wire rope be wound around assembly pulley.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention will be further described.
As shown in Figure 2, this crawler crane variable-amplitude auxiliary arm support comprises variable-amplitude auxiliary arm support 9, and is arranged in the middle part of described variable-amplitude auxiliary arm support 9 respectively and the hoist rope leading sheave group 10 at top and variable-amplitude steel wire rope are wound around assembly pulley 11;
Described variable-amplitude auxiliary arm support 9 is be arranged at variable-amplitude auxiliary arm supporting leg one 9-3 of both sides and the two supporting leg box-structure of variable section of variable-amplitude auxiliary arm supporting leg two 9-4 formation respectively.
Further, as shown in Figures 2 and 3, cross section, described variable-amplitude auxiliary arm support 9 both ends is less than cross section, middle part.
For crawler crane, in luffing plane, variable-amplitude auxiliary arm support 9 can be reduced to a single supported beam, from the loading characteristic of single supported beam, the medium position region of variable-amplitude auxiliary arm support 9 is stressed larger, region, upper and lower both ends is stressed relatively little, therefore technical solution of the present invention adopts midsection large, the variable cross-section form that cross section, two is little, as shown in Figures 4 to 7, section A 2 × the B2 at section B-B place is greater than the section A 1 × B1 at cross section A-A place and the cross section B3 × C3 at section C-C place, can while proof strength, the weight of framing member can be alleviated by actv..
Further, as shown in Figures 2 and 3, the afterbody sectional span of described variable-amplitude auxiliary arm support 9 is greater than middle part sectional span, and the middle part sectional span of described variable-amplitude auxiliary arm support 9 is greater than top cross-section span.
For crawler crane, in plane of rotation, variable-amplitude auxiliary arm support 9 can be reduced to a cantilever beam, it mainly bears the demand of lateral stability, therefore bottom technical solution of the present invention, dumpling point span is larger, the form upwards progressively reduced, as shown in Figures 4 to 7, the box-type section span L 1 at cross section A-A place is greater than the box-type section span L 2 at section B-B place, the box-type section span L 2 at section B-B place is greater than the box-type section span L 3 at section C-C place, while can ensureing opposing lateral bucking, the weight of framing member can be alleviated by actv..
Meanwhile, as shown in Figure 1, present invention also offers a kind of crawler crane, comprise chassis system 1, principal arm 2 and variable-amplitude auxiliary arm 3, and principal arm arm-tie 7 and anti-squat system 8;
Between described principal arm 2 and variable-amplitude auxiliary arm 3, arm-tie 6 after arm-tie before variable-amplitude auxiliary arm 4 and variable-amplitude auxiliary arm is provided with variable-amplitude auxiliary arm front frame 9-1 and variable-amplitude auxiliary arm after poppet 9-2;
Described variable-amplitude auxiliary arm front frame 9-1 and variable-amplitude auxiliary arm after poppet 9-2 have employed the version of above-mentioned variable-amplitude auxiliary arm support 9.
In sum, this crawler crane variable-amplitude auxiliary arm support and crawler crane have employed the version of variable section, and make variable-amplitude auxiliary arm support own wt comparatively light, the capsizing moment produced is less, the arm difficulty that rises of complete machine is reduced accordingly, the lifting performance of complete machine can be made to increase accordingly; Reduce manufacturing cost and traffic cost; The angle that variable-amplitude auxiliary arm is tumbled can be postponed, difficulty and the cost of anti-squat system design can be reduced; And the relative force making anti-squat system provide is less, significantly reduce the damage to variable-amplitude auxiliary arm support.
Claims (4)
1. a crawler crane variable-amplitude auxiliary arm support, comprise variable-amplitude auxiliary arm support (9), and be arranged at hoist rope leading sheave group (10) and variable-amplitude steel wire rope winding assembly pulley (11) at described variable-amplitude auxiliary arm support (9) middle part and top respectively;
It is characterized in that, described variable-amplitude auxiliary arm support (9) is be arranged at the two supporting leg box-structure of variable section that the variable-amplitude auxiliary arm supporting leg one (9-3) of both sides and variable-amplitude auxiliary arm supporting leg two (9-4) form respectively.
2. a kind of crawler crane variable-amplitude auxiliary arm support according to claim 1, is characterized in that,
Described variable-amplitude auxiliary arm support (9) cross section, both ends is less than cross section, middle part.
3. a kind of crawler crane variable-amplitude auxiliary arm support according to claim 1, is characterized in that,
The afterbody sectional span of described variable-amplitude auxiliary arm support (9) is greater than middle part sectional span, and the middle part sectional span of described variable-amplitude auxiliary arm support (9) is greater than top cross-section span.
4. a crawler crane, comprises chassis system (1), principal arm (2) and variable-amplitude auxiliary arm (3), and principal arm arm-tie (7) and anti-squat system (8);
Between described principal arm (2) and variable-amplitude auxiliary arm (3), arm-tie (6) after arm-tie before variable-amplitude auxiliary arm (4) and variable-amplitude auxiliary arm is provided with variable-amplitude auxiliary arm front frame (9-1) and variable-amplitude auxiliary arm after poppet (9-2);
It is characterized in that, the structure of described variable-amplitude auxiliary arm front frame (9-1) and variable-amplitude auxiliary arm after poppet (9-2) is the variable-amplitude auxiliary arm support (9) described in claims 1 to 3 any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510528332.1A CN105129631A (en) | 2015-08-25 | 2015-08-25 | Variable-amplitude auxiliary arm support of crawler crane and crawler crane |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510528332.1A CN105129631A (en) | 2015-08-25 | 2015-08-25 | Variable-amplitude auxiliary arm support of crawler crane and crawler crane |
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| CN105129631A true CN105129631A (en) | 2015-12-09 |
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| CN201510528332.1A Pending CN105129631A (en) | 2015-08-25 | 2015-08-25 | Variable-amplitude auxiliary arm support of crawler crane and crawler crane |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113501447A (en) * | 2021-07-08 | 2021-10-15 | 徐工集团工程机械股份有限公司建设机械分公司 | Crane and method for lifting main arm of crane |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4042003A1 (en) * | 1990-12-22 | 1991-07-11 | Eberswalde Kranbau Gmbh | Derrick type crane with pulley block - has cable guide pulleys arranged so that jib is raised by cable which lifts load |
| CN101590985A (en) * | 2009-07-02 | 2009-12-02 | 长沙中联重工科技发展股份有限公司 | Crawler crane and jib thereof |
| CN202542747U (en) * | 2012-03-30 | 2012-11-21 | 徐工集团工程机械股份有限公司 | Crawler crane with multiple combination modes |
| CN103466472A (en) * | 2013-09-27 | 2013-12-25 | 徐工集团工程机械股份有限公司 | Auxiliary arm system and crawler crane |
| CN104709833A (en) * | 2015-01-30 | 2015-06-17 | 徐工集团工程机械股份有限公司 | Novel luffing rib ropewalking crawler crane |
| CN205061425U (en) * | 2015-08-25 | 2016-03-02 | 徐工集团工程机械股份有限公司 | Caterpillar crane becomes width of cloth auxiliary support and caterpillar crane |
-
2015
- 2015-08-25 CN CN201510528332.1A patent/CN105129631A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4042003A1 (en) * | 1990-12-22 | 1991-07-11 | Eberswalde Kranbau Gmbh | Derrick type crane with pulley block - has cable guide pulleys arranged so that jib is raised by cable which lifts load |
| CN101590985A (en) * | 2009-07-02 | 2009-12-02 | 长沙中联重工科技发展股份有限公司 | Crawler crane and jib thereof |
| CN202542747U (en) * | 2012-03-30 | 2012-11-21 | 徐工集团工程机械股份有限公司 | Crawler crane with multiple combination modes |
| CN103466472A (en) * | 2013-09-27 | 2013-12-25 | 徐工集团工程机械股份有限公司 | Auxiliary arm system and crawler crane |
| CN104709833A (en) * | 2015-01-30 | 2015-06-17 | 徐工集团工程机械股份有限公司 | Novel luffing rib ropewalking crawler crane |
| CN205061425U (en) * | 2015-08-25 | 2016-03-02 | 徐工集团工程机械股份有限公司 | Caterpillar crane becomes width of cloth auxiliary support and caterpillar crane |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113501447A (en) * | 2021-07-08 | 2021-10-15 | 徐工集团工程机械股份有限公司建设机械分公司 | Crane and method for lifting main arm of crane |
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Application publication date: 20151209 |