CN203728455U - Two-ratio amplitude changing device of trolley amplitude-changing type tower crane - Google Patents
Two-ratio amplitude changing device of trolley amplitude-changing type tower crane Download PDFInfo
- Publication number
- CN203728455U CN203728455U CN201420064431.XU CN201420064431U CN203728455U CN 203728455 U CN203728455 U CN 203728455U CN 201420064431 U CN201420064431 U CN 201420064431U CN 203728455 U CN203728455 U CN 203728455U
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- China
- Prior art keywords
- amplitude
- steel wire
- pulley
- wire rope
- amplitude changing
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- Withdrawn - After Issue
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Abstract
The utility model discloses a two-ratio amplitude changing device of a trolley amplitude-changing type tower crane. The two-ratio amplitude changing device comprises an amplitude changing mechanism, an amplitude changing trolley, a tension device, an arm root pulley, an arm rest tension pulley, an arm end pulley, trolley guide pulleys and two amplitude changing steel wire ropes, wherein the trolley guide pulleys are respectively arranged on two opposite ends of the amplitude changing trolley; one end of the one amplitude changing steel wire rope is fixed on the fixed end, and the other end of the amplitude changing steel wire rope rounds one trolley guide pulley, the arm end pulley and the arm rest tension pulley to be fixedly wound on one end of the amplitude changing mechanism; one end of the other amplitude changing steel wire rope is connected with the tension device, and the other end of the amplitude changing steel wire rope gets round the other trolley guide pulley and the arm root pulley to be fixedly wound on the other end of the amplitude changing mechanism. The two-ratio amplitude changing device uses two ratios for rope winding, the two steel wire ropes bear the load, and the tension of the steel wire ropes is reduced by half. The diameters of the steel wire ropes, a winding drum and a transition pulley are decreased, and meanwhile the torque of the winding drum is reduced.
Description
Technical field
The utility model 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 when occurring that lifted load is heavier, relevant pulley etc., and element size increases, for design brings certain difficulty.
Utility model content
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 utility model provides a kind of carriage amplitude varying formula tower crane two multiplying power luffing devices, and it has advantages of diameter, the minimizing reel moment of torsion that reduces steel rope, reel and transition pulley.
To achieve these goals, the utility model adopts following technical scheme.
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 utility model contrast prior art 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 utility model.
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 utility model is described in further detail.
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.
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.
Although above-mentioned, by reference to the accompanying drawings the specific embodiment of the present utility model is described; but the not restriction to the utility model protection domain; one of ordinary skill in the art should be understood that; on the basis of the technical solution of the utility model, those skilled in the art do not need to pay various modifications that creative work can make or distortion still in protection domain of the present utility model.
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 |
|---|---|---|---|
| CN201420064431.XU CN203728455U (en) | 2014-02-13 | 2014-02-13 | Two-ratio amplitude changing device of trolley amplitude-changing type tower crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420064431.XU CN203728455U (en) | 2014-02-13 | 2014-02-13 | Two-ratio amplitude changing device of trolley amplitude-changing type tower crane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203728455U true CN203728455U (en) | 2014-07-23 |
Family
ID=51198544
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420064431.XU Withdrawn - After Issue CN203728455U (en) | 2014-02-13 | 2014-02-13 | Two-ratio amplitude changing device of trolley amplitude-changing type tower crane |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203728455U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103803432A (en) * | 2014-02-13 | 2014-05-21 | 山东大汉建设机械有限公司 | Twofold luffing device for trolley luffing tower crane |
| CN112645215A (en) * | 2020-12-30 | 2021-04-13 | 华德起重机（天津）股份有限公司 | Marine crane |
-
2014
- 2014-02-13 CN CN201420064431.XU patent/CN203728455U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103803432A (en) * | 2014-02-13 | 2014-05-21 | 山东大汉建设机械有限公司 | Twofold luffing device for trolley luffing tower crane |
| CN112645215A (en) * | 2020-12-30 | 2021-04-13 | 华德起重机（天津）股份有限公司 | Marine crane |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140723 Effective date of abandoning: 20150826 |
|
| RGAV | Abandon patent right to avoid regrant |