CN103803432A - Twofold luffing device for trolley luffing tower crane - Google Patents
Twofold luffing device for trolley luffing tower crane Download PDFInfo
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- CN103803432A CN103803432A CN201410050054.9A CN201410050054A CN103803432A CN 103803432 A CN103803432 A CN 103803432A CN 201410050054 A CN201410050054 A CN 201410050054A CN 103803432 A CN103803432 A CN 103803432A
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- luffing
- steel wire
- wire rope
- amplitude
- variable
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Abstract
The invention discloses a twofold luffing device for a trolley luffing tower crane. The device comprises a luffing mechanism, a luffing trolley, a tension device, boom root pulleys, boom frame tension pulleys, a boom end pulley, trolley guide pulleys and two luffing steel wire ropes, wherein the trolley guide pulleys are arranged at the two opposite ends of the luffing trolley respectively; one end of one luffing steel wire rope is fixed at a fixed end, and the other end of the luffing steel wire rope passes through one trolley guide pulley, the boom end pulley and the boom frame tension pulleys respectively, and is fixedly arranged at one end of the luffing mechanism in a winding manner; one end of the other luffing steel wire rope is connected with the tension device, and the other end of the luffing steel wire rope is arranged on the other trolley guide pulley and the boom root pulleys respectively in the winding manner, and is fixedly arranged at the other end of the luffing mechanism in the winding manner. According to the device, a twofold rope winding mode is adopted, and a load is born by the two steel wire ropes, so that the tension of the steel wire ropes is halved, the diameters of the steel wire ropes, a winding drum and a transition pulley are reduced, and torque of the winding drum is also reduced.
Description
Technical field
The present invention relates to a kind of carriage amplitude varying formula tower crane two multiplying power luffing devices.
Background technology
At present, carriage amplitude varying formula tower crane generally adopts single multiplying power luffing mode, can increase the diameter of steel rope and the output torque of amplitude-changing drum in the time occurring that lifted load is heavier, relevant pulley etc., and element size increases, for design brings certain difficulty.
Summary of the invention
The carriage amplitude varying formula optimization of traction mechanism in power hoist volume existing for solution prior art is larger, the technical matters of the poor grade of luffing effect, for this reason, the invention provides a kind of carriage amplitude varying formula tower crane two multiplying power luffing devices, it has advantages of the diameter, the minimizing reel moment of torsion that reduce steel rope, reel and transition pulley.
To achieve these goals, the present invention adopts following technical scheme.
A kind of carriage amplitude varying formula tower crane two multiplying power luffing devices, comprise luffing mechanism, amplitude variation trolley, tightening device, arm root pulley, jib tension pulley block, arm head sheave, dolly leading sheave, variable-amplitude steel wire rope; Described amplitude variation trolley is respectively equipped with dolly leading sheave on two ends in opposite directions, described variable-amplitude steel wire rope has two, one end of one of them variable-amplitude steel wire rope is fixed on fixed end, the other end of this variable-amplitude steel wire rope is walked around respectively a dolly leading sheave, arm head sheave, jib tension pulley block, and is fastened on one end of luffing mechanism; One end of another root variable-amplitude steel wire rope connects tightening device, and the other end of this variable-amplitude steel wire rope is walked around respectively another dolly leading sheave, arm root pulley, and is fastened on the other end of luffing mechanism.
The present invention contrasts prior art and has following remarkable advantage: use two multiplying power wirings, equal two steel ropes and bear load, steel wire rope tension reduces half, has reduced the diameter of steel rope, reel and transition pulley, has reduced the moment of torsion of reel simultaneously.Certainly meeting the derricking speed identical with single multiplying power requires the speed of steel rope to double.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is the present embodiment amplitude variation trolley time rope row's winding direction schematic diagram that moves to left.
Fig. 3 is the present embodiment amplitude variation trolley time rope row's winding direction schematic diagram that moves to right.
Wherein, 1, luffing mechanism; 2, amplitude variation trolley; 3, tightening device; 4, arm root pulley; 5, jib tension pulley block; 6, arm head sheave; 7, the first dolly leading sheave; 8, the first variable-amplitude steel wire rope; 9 second variable-amplitude steel wire ropes; 10, the second dolly leading sheave; 11, fixed end.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment, the invention will be further described.
As shown in Figure 1, a kind of carriage amplitude varying formula tower crane amplitude variation method comprises luffing mechanism 1, amplitude variation trolley 2, tightening device 3, arm root pulley 4, jib tension pulley block 5, arm head sheave 6, the first dolly leading sheave 7, the first variable-amplitude steel wire rope 8, the second variable-amplitude steel wire rope 9, the second dolly leading sheave 10; On described amplitude variation trolley 2 two ends in opposite directions, be respectively equipped with the first dolly leading sheave 7 and the second dolly leading sheave 10, described variable-amplitude steel wire rope has two, wherein one end of the second variable-amplitude steel wire rope 9 is fixed on fixed end 11, the other end of the second variable-amplitude steel wire rope 9 is walked around respectively the second dolly leading sheave 10, arm head sheave 6, two jib tension pulley blocks 5, and is fastened on one end of luffing mechanism 1; The other end that one end of the first variable-amplitude steel wire rope 8 connects tightening device 3, the first variable-amplitude steel wire ropes 8 is walked around respectively the first dolly leading sheave 7, two arm root pulleys 4, and is fastened on the other end of luffing mechanism 1.
By reference to the accompanying drawings the specific embodiment of the present invention is described although above-mentioned; but not limiting the scope of the invention; one of ordinary skill in the art should be understood that; on the basis of technical scheme of the present invention, those skilled in the art do not need to pay various modifications that creative work can make or distortion still in protection scope of the present invention.
Claims (1)
1. carriage amplitude varying formula tower crane two multiplying power luffing devices, is characterized in that, comprise luffing mechanism, amplitude variation trolley, tightening device, arm root pulley, jib tension pulley block, arm head sheave, dolly leading sheave, variable-amplitude steel wire rope; Described amplitude variation trolley is respectively equipped with dolly leading sheave on two ends in opposite directions, described variable-amplitude steel wire rope has two, one end of one of them variable-amplitude steel wire rope is fixed on fixed end, the other end of this variable-amplitude steel wire rope is walked around respectively a dolly leading sheave, arm head sheave, jib tension pulley block, and is fastened on one end of luffing mechanism; One end of another root variable-amplitude steel wire rope connects tightening device, and the other end of this variable-amplitude steel wire rope is walked around respectively another dolly leading sheave, arm root pulley, and is fastened on the other end of luffing mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410050054.9A CN103803432B (en) | 2014-02-13 | 2014-02-13 | A kind of carriage amplitude varying formula tower crane two multiplying power luffing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410050054.9A CN103803432B (en) | 2014-02-13 | 2014-02-13 | A kind of carriage amplitude varying formula tower crane two multiplying power luffing device |
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|---|---|
| CN103803432A true CN103803432A (en) | 2014-05-21 |
| CN103803432B CN103803432B (en) | 2015-08-26 |
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| CN201410050054.9A Active CN103803432B (en) | 2014-02-13 | 2014-02-13 | A kind of carriage amplitude varying formula tower crane two multiplying power luffing device |
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Citations (9)
| 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 |
| JPH11292473A (en) * | 1998-04-10 | 1999-10-26 | Tadano Ltd | Back tension device for luffing jib |
| CN201105959Y (en) * | 2007-10-12 | 2008-08-27 | 杭州科曼萨杰牌建设机械有限公司 | Tower crane amplitude automatic rope tightener |
| JP2011105448A (en) * | 2009-11-17 | 2011-06-02 | Ihi Corp | Cylinder type deck crane |
| CN201952133U (en) * | 2010-09-08 | 2011-08-31 | 长沙中联重工科技发展股份有限公司 | Steel wire rope tensioning device of crane and crane |
| CN102491203A (en) * | 2011-12-13 | 2012-06-13 | 三一集团有限公司 | Crane and luffing mechanism thereof |
| CN202609837U (en) * | 2012-04-21 | 2012-12-19 | 抚顺永茂建筑机械有限公司 | Luffing rope tensioning device of tower crane |
| CN203306948U (en) * | 2013-07-04 | 2013-11-27 | 郑州新大方重工科技有限公司 | Single-power multi-multiplying power luffing mechanism |
| CN203728455U (en) * | 2014-02-13 | 2014-07-23 | 山东大汉建设机械有限公司 | Two-ratio amplitude changing device of trolley amplitude-changing type tower crane |
-
2014
- 2014-02-13 CN CN201410050054.9A patent/CN103803432B/en active Active
Patent Citations (9)
| 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 |
| JPH11292473A (en) * | 1998-04-10 | 1999-10-26 | Tadano Ltd | Back tension device for luffing jib |
| CN201105959Y (en) * | 2007-10-12 | 2008-08-27 | 杭州科曼萨杰牌建设机械有限公司 | Tower crane amplitude automatic rope tightener |
| JP2011105448A (en) * | 2009-11-17 | 2011-06-02 | Ihi Corp | Cylinder type deck crane |
| CN201952133U (en) * | 2010-09-08 | 2011-08-31 | 长沙中联重工科技发展股份有限公司 | Steel wire rope tensioning device of crane and crane |
| CN102491203A (en) * | 2011-12-13 | 2012-06-13 | 三一集团有限公司 | Crane and luffing mechanism thereof |
| CN202609837U (en) * | 2012-04-21 | 2012-12-19 | 抚顺永茂建筑机械有限公司 | Luffing rope tensioning device of tower crane |
| CN203306948U (en) * | 2013-07-04 | 2013-11-27 | 郑州新大方重工科技有限公司 | Single-power multi-multiplying power luffing mechanism |
| CN203728455U (en) * | 2014-02-13 | 2014-07-23 | 山东大汉建设机械有限公司 | Two-ratio amplitude changing device of trolley amplitude-changing type tower crane |
Non-Patent Citations (1)
| Title |
|---|
| 刘绍东等: "塔式起重机变幅小车及吊钩滑轮组倍率变换方式的探讨", 《中国科技投资》, no. 12, 31 December 2013 (2013-12-31), pages 110 - 131 * |
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|---|---|
| CN103803432B (en) | 2015-08-26 |
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Address after: 250012 Cheshan Industrial Park, Mingshui Economic Development Zone, Zhangqiu District, Jinan City, Shandong Province Patentee after: SHANDONG DAHAN CONSTRUCTION MACHINERY CO., LTD. Address before: 250012 Zhangqiu City, Ji'nan, Shandong Province Patentee before: Shandong Dahan Construction Machinery Co., Ltd. |
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