CN103803432B - A kind of carriage amplitude varying formula tower crane two multiplying power luffing device - Google Patents
A kind of carriage amplitude varying formula tower crane two multiplying power luffing device Download PDFInfo
- Publication number
- CN103803432B CN103803432B CN201410050054.9A CN201410050054A CN103803432B CN 103803432 B CN103803432 B CN 103803432B CN 201410050054 A CN201410050054 A CN 201410050054A CN 103803432 B CN103803432 B CN 103803432B
- Authority
- CN
- China
- Prior art keywords
- amplitude
- steel wire
- wire rope
- variable
- sheave
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 36
- 239000010959 steel Substances 0.000 claims abstract description 36
- 230000007423 decrease Effects 0.000 abstract description 4
- 230000007704 transition Effects 0.000 abstract description 3
- 238000004804 winding Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
Landscapes
- Jib Cranes (AREA)
Abstract
The invention discloses a kind of carriage amplitude varying formula tower crane two multiplying power luffing device, 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; Two ends are in opposite directions respectively equipped with dolly leading sheave to amplitude variation trolley, 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 walks around a dolly leading sheave, arm head sheave, jib tension pulley block respectively, 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 walks around another dolly leading sheave, arm root pulley respectively, is fastened on the other end of luffing mechanism.The present invention uses two multiplying power wirings, bears load by two steel ropes, and steel wire rope tension reduces half, decreases the diameter of steel rope, reel and transition pulley, decreases the moment of torsion of reel simultaneously.
Description
Technical field
The present invention relates to tower crane technical field, specifically, relate to a kind of carriage amplitude varying formula tower crane two multiplying power luffing device.
Background technology
At present, the element sizes such as 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 when occurring that lifted load is heavier, relevant pulley increase, for design brings certain difficulty.
Summary of the invention
For the carriage amplitude varying formula optimization of traction mechanism in power hoist volume solving prior art existence 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 device, it has the diameter reducing steel rope, reel and transition pulley, the advantage reducing reel moment of torsion.
To achieve these goals, the present invention adopts following technical scheme.
A kind of carriage amplitude varying formula tower crane two multiplying power luffing device, comprises 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; Two ends are in opposite directions respectively equipped with dolly leading sheave to described amplitude variation trolley, 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 walks around a dolly leading sheave, arm head sheave, jib tension pulley block respectively, 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 walks around another dolly leading sheave, arm root pulley respectively, 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, and equal two steel ropes and bear load, steel wire rope tension reduces half, decreases the diameter of steel rope, reel and transition pulley, decreases the moment of torsion of reel simultaneously.Certainly meet the derricking speed identical with single multiplying power and require that the speed of steel rope doubles.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is the present embodiment amplitude variation trolley rope row winding direction schematic diagram when moving to left.
Fig. 3 is the present embodiment amplitude variation trolley rope row winding direction schematic diagram when moving 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.
Detailed description of the invention
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, first dolly leading sheave 7, first variable-amplitude steel wire rope 8, second variable-amplitude steel wire rope 9, second dolly leading sheave 10; Described amplitude variation trolley 2 two ends are in opposite directions 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 walks around the second dolly leading sheave 10, arm head sheave 6, two jib tension pulley blocks 5 respectively, and is fastened on one end of luffing mechanism 1; The other end of one end connection tightening device 3, first variable-amplitude steel wire rope 8 of the first variable-amplitude steel wire rope 8 walks around the first dolly leading sheave 7, two arm root pulleys 4 respectively, and is fastened on the other end of luffing mechanism 1.
Amplitude variation trolley 2 moves to left, and amplitude reduces, and rope row winding direction as shown in Figure 2.
Amplitude variation trolley 2 moves to right, and amplitude increases, and rope row winding direction as shown in Figure 3.
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 amendment or distortion that creative work can make still within protection scope of the present invention.
Claims (1)
1. a carriage amplitude varying formula tower crane two multiplying power luffing device, is characterized in that, comprises 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; Two ends are in opposite directions respectively equipped with dolly leading sheave to described amplitude variation trolley, 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 walks around a dolly leading sheave, arm head sheave, jib tension pulley block respectively, 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 walks around another dolly leading sheave, arm root pulley respectively, 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 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103803432A CN103803432A (en) | 2014-05-21 |
| CN103803432B true CN103803432B (en) | 2015-08-26 |
Family
ID=50700891
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| 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 |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103803432B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115432604A (en) * | 2021-06-04 | 2022-12-06 | 中联重科股份有限公司 | Amplitude changing system of tower crane and crane |
| CN115215236A (en) * | 2022-06-20 | 2022-10-21 | 中联重科建筑起重机械有限责任公司 | Luffing rope tensioning system of tower crane and tower crane |
| CN115448179B (en) * | 2022-09-01 | 2025-07-11 | 青岛海西重机有限责任公司 | A self-pretensioning method and system for crane luffing wire rope |
Family Cites Families (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 |
| JP4157191B2 (en) * | 1998-04-10 | 2008-09-24 | 株式会社タダノ | Roughing jib back tension device |
| 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
Also Published As
| Publication number | Publication date |
|---|---|
| CN103803432A (en) | 2014-05-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202848895U (en) | Crane hoisting mechanism | |
| CN103803432B (en) | A kind of carriage amplitude varying formula tower crane two multiplying power luffing device | |
| CN206645749U (en) | Electric block type multi-lay winding hoist engine | |
| CN203728455U (en) | Two-ratio amplitude changing device of trolley amplitude-changing type tower crane | |
| CN203782777U (en) | Lifting device for double ringing slotter | |
| CN102530757B (en) | Wire-rope/pulley component and crane | |
| CN104340865A (en) | Crane and lifting operation mechanism thereof | |
| CN109733994B (en) | Crane anti-swing system | |
| CN104649120A (en) | Balance hoisting equipment | |
| CN202766105U (en) | Electric hoist transmission mechanism | |
| CN201722053U (en) | Hoisting mechanism used for upright column hoisting | |
| CN203767902U (en) | Hoisting crane structure of folding block of steel box girder of cable-stayed bridge | |
| CN202542743U (en) | Auxiliary reeving mechanism for mounting tower crane | |
| CN203247024U (en) | Anti-swing device of jib-bridge crane | |
| CN204752021U (en) | Symmetrical train of two jib loading boom towers machine | |
| CN202687800U (en) | Anti-swing lifting mechanism of crane | |
| CN203865892U (en) | Dual-rope lifting machine | |
| CN203359882U (en) | Hauling rope winding structure of main trolley of crane | |
| CN205114875U (en) | Hoist anti -swing system | |
| CN204490352U (en) | Anti roll device on hoisting crane | |
| CN204454368U (en) | A kind of hanging device | |
| CN203653125U (en) | Hoister for tower crane hoisting | |
| CN206219093U (en) | The rope sheave architecture excessively of carriage amplitude varying and luffing jib can be met | |
| CN201614236U (en) | Balance wheel type eight-rope cross anti-sway device | |
| CN104925668A (en) | Anti-swing system for crane |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
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. |
|
| CP03 | Change of name, title or address |