CN114105007A - A winding method and a crane for increasing the magnification of the pulley of the boom head - Google Patents
A winding method and a crane for increasing the magnification of the pulley of the boom head Download PDFInfo
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- CN114105007A CN114105007A CN202111468581.8A CN202111468581A CN114105007A CN 114105007 A CN114105007 A CN 114105007A CN 202111468581 A CN202111468581 A CN 202111468581A CN 114105007 A CN114105007 A CN 114105007A
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- pulley
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- tower
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/62—Constructional features or details
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/62—Constructional features or details
- B66C23/64—Jibs
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Jib Cranes (AREA)
Abstract
本发明公开了一种增加臂头滑轮倍率的缠绕方法及起重机；所述主臂臂端滑轮的顶部设有主臂臂端滑轮头部单滑轮；在主臂借用臂端滑轮工况下：钢丝绳从主起升机构出发经过主臂臂头导向滑轮与主臂臂端滑轮头部单滑轮导向后，与吊钩滑轮组缠绕后，与主臂臂头滑轮组缠绕；本发明通过在主臂、塔臂工况下借用臂端滑轮头部单滑轮通过臂头滑轮组与吊钩滑轮组的不同缠绕增加钢丝绳倍率，提高起重机起重重量，同时不必更改履带起重机自身结构即可增加履带起重机的起重能力。
The invention discloses a winding method and a crane for increasing the magnification of a pulley at the arm head; the top of the pulley at the arm end of the main arm is provided with a single pulley at the head of the pulley at the arm end of the main arm; Starting from the main hoisting mechanism, after being guided by the main arm arm head guide pulley and the main arm arm end pulley head single pulley, after wrapping with the hook pulley block, it is wrapped with the main arm arm head pulley block; Under the working conditions, the single pulley at the head of the jib end pulley is used to increase the wire rope ratio through the different winding of the jib pulley block and the hook pulley block, so as to improve the lifting weight of the crane. At the same time, the lifting capacity of the crawler crane can be increased without changing the structure of the crawler crane itself.
Description
Technical Field
The invention relates to a winding method for increasing the multiplying power of an arm head pulley and a crane, and belongs to the technical field of crawler cranes.
Background
The crawler crane is a mobile crane which is provided with a traveling device, a hoisting device, a luffing device and a slewing device on a traveling crawler chassis and lifts a heavy object by depending on a stress structure such as an arm support, a lifting hook and the like, the working conditions to which the crawler crane needs to adapt are more and more complex along with the continuous development of the hoisting industry and the improvement of the weight of the hoisted object, the main working conditions of the crawler crane comprise a main arm working condition, a tower arm working condition, a main arm end pulley working condition, a tower arm end pulley working condition, an auxiliary arm end pulley working condition and the like, and in order to adapt to the increase of the weight of the hoisted object, the hoisting capacity of the crane needs to be rapidly increased under the condition that the self structure is not changed.
The main working conditions of the prior crawler crane comprise main arm working conditions, tower arm working conditions, main arm end pulley working conditions, tower arm end pulley working conditions, auxiliary arm end pulley working conditions and the like. Under the working condition of the main arm, all parts are installed as shown in figure 1, a hoisting steel wire rope starts from a main hoisting mechanism, passes through a main arm head guide pulley 1, and is wound and hoisted by multiple times of a main arm head pulley block and a main hook pulley block, the steel wire rope is wound schematically as shown in figure 2, after passing through the main arm head guide pulley, the steel wire rope firstly passes through a 2 nd pulley at the main arm head to be wound with a 1 st pulley on a hook, and returns to the 1 st pulley at the main arm head after passing through the 1 st pulley at the hook, and so on, the rope head is locked at the main arm head after the steel wire rope is wound through a 7 th pulley at the hook, and through the winding mode, the multiplying power of the steel wire rope reaches the maximum 12 multiplying power; limited by the structure of the arm head, the number of the pulley blocks of the arm head is limited, the multiplying power of the steel wire rope is directly influenced, and the hoisting weight of the crawler crane is limited.
Disclosure of Invention
The invention aims to provide a winding method for increasing the multiplying power of an arm head pulley and a crane, and aims to overcome the defect that the multiplying power of a steel wire rope is directly influenced due to the limited number of pulley blocks of the arm head of the existing crane.
A winding method for increasing the multiplying power of a main arm head pulley comprises a main arm bottom section, a main hoisting mechanism, a main arm and a hook pulley block, wherein the main hoisting mechanism is arranged on the side part of the main arm bottom section, the main arm bottom section is connected with the main arm, a main arm head guide pulley is arranged at one end of the top of the main arm, a main arm head pulley block is arranged at the other end of the top of the main arm, a main arm end pulley is arranged at the end part of the main arm, and a main arm end pulley head single pulley is arranged at the top of the main arm end pulley;
the winding mode of the main arm under the working condition of borrowing the pulley at the arm end is as follows: the steel wire rope is guided by the main arm head guide pulley and the main arm end pulley head single pulley from the main hoisting mechanism, and then is wound with the hook pulley block and then is wound with the main arm head pulley block.
Further, the method further comprises: the steel wire rope is guided by the main arm head guide pulley and the main arm end pulley head single pulley from the main hoisting mechanism, then is wound with the hook pulley block, bypasses the main arm head pulley block and then is wound with the hook pulley block.
Furthermore, a main arm top section is arranged at the top of the main arm, a tower arm bottom section is arranged at the top of the main arm top section, and the tower arm bottom section is connected with a tower arm; the end part of the tower arm is provided with a tower arm top knuckle arm, and the top of the tower arm top knuckle arm is provided with a tower arm end pulley.
Furthermore, the tower arm end pulley is provided with a tower arm end pulley head single pulley.
Furthermore, a top section guide pulley is arranged at one end of the end part of the top section arm of the tower arm, and a tower arm head pulley block is arranged at the other end of the top section arm of the tower arm.
Furthermore, a tower arm rear support is arranged on the top section of the main arm, and a tower arm front support is arranged on the bottom section of the tower arm.
Further, under the working condition that the tower arm or the auxiliary arm uses an arm end pulley, the winding mode is as follows: the steel wire rope is guided by the top section guide pulley and the single pulley at the head of the pulley at the arm end of the tower arm from the main hoisting mechanism, then is wound with the hook pulley block, bypasses the pulley block at the arm head of the tower arm and then is wound with the hook pulley block.
And furthermore, the method also comprises the step that the steel wire rope is wound with the hook pulley block, bypasses the tower arm head pulley block and then is wound with the hook pulley block after being guided by the top section guide pulley and the tower arm end pulley head single pulley from the main hoisting mechanism.
A crane comprises the winding method for increasing the magnification of the arm head pulley.
Compared with the prior art, the invention has the following beneficial effects: according to the invention, under the working conditions of the main arm and the tower arm, the multiplying power of the steel wire rope is increased by winding the single pulley at the head part of the pulley at the arm end and the hook pulley block differently, so that the hoisting weight of the crane is improved, and meanwhile, the hoisting capacity of the crawler crane can be increased without changing the self structure of the crawler crane.
Drawings
FIG. 1 is a schematic diagram of a main arm working condition of the invention by means of an arm end pulley;
FIG. 2 is a schematic view of a wire rope winding method according to the present invention;
FIG. 3 is a schematic view of a wire rope winding method according to the present invention;
FIG. 4 is a schematic diagram of a tower arm working condition of the present invention with an arm end pulley;
in the figure: 1. a main arm bottom section; 2. a main hoisting mechanism; 3. a main arm; 4. a hook pulley block; 5. a main arm head guide pulley; 6. a main arm head pulley block; 7. a main arm end pulley; 8. a single pulley at the head of the pulley at the arm end of the main arm; 9. a main arm top section; 10. a tower arm bottom section; 11. a tower arm rear support; 12. a tower arm front support; 13. a tower arm; 14. a tower arm top knuckle arm; 15. a top section guide pulley; 16. a tower arm head pulley block; 17. a tower arm end pulley; 18. the head part of the pulley at the arm end of the tower arm is a single pulley.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
As shown in fig. 1-4, a winding method for increasing the magnification of a boom head pulley is disclosed, which comprises a main boom bottom section 1, a main hoisting mechanism 2, a main boom 3 and a hook pulley 4, wherein the main hoisting mechanism 2 is arranged on the side part of the main boom bottom section 1, the main boom bottom section 1 is connected with the main boom 3, a main boom head guide pulley 5 is arranged at one end of the top of the main boom 3, a main boom head pulley block 6 is arranged at the other end of the top of the main boom 3, a main boom end pulley 7 is arranged at the end part of the main boom 3, and a main boom end pulley head single pulley 8 is arranged at the top of the main boom end pulley 7;
the winding mode of the main arm under the working condition of borrowing the pulley at the arm end is as follows: the steel wire rope is guided by the main arm head guide pulley 5 and the main arm end pulley head single pulley 8 from the main hoisting mechanism, and then is wound with the hook pulley block 4 and then is wound with the main arm head pulley block 6.
The winding mode of the main arm under the working condition of borrowing the pulley at the arm end is as follows: the steel wire rope is guided by the main arm head guide pulley 5 and the main arm end pulley head single pulley 8 from the main hoisting mechanism, then is wound with the hook pulley block 4, bypasses the main arm head pulley block 6 and then is wound with the hook pulley block 4.
Under the working condition that the tower arm or the auxiliary arm borrows the pulley at the arm end: the top of the main arm 3 is provided with a main arm top section 9, the top of the main arm top section 9 is provided with a tower arm bottom section 10, and the tower arm bottom section 10 is connected with a tower arm 13; the end part of the tower arm 13 is provided with a tower arm top knuckle arm 14, the top of the tower arm top knuckle arm 14 is provided with a tower arm end pulley 17, and the tower arm end pulley 17 is provided with a tower arm end pulley head single pulley 18; a top section guide pulley 15 is arranged at one end of the end part of the tower arm top section arm 14, a tower arm head pulley block 16 is arranged at the other end of the tower arm top section arm 14, a tower arm rear support 11 is arranged on the main arm top section 9, and a tower arm front support 12 is arranged on the tower arm bottom section 10.
The winding method is characterized in that the winding method is as follows under the working condition that the tower arm or the auxiliary arm uses the pulley at the arm end: the steel wire rope is guided by a top section guide pulley 15 and a tower arm end pulley head single pulley 18 from the main hoisting mechanism, then is wound with the hook pulley block 4, bypasses a tower arm head pulley block 16 and is then wound with the hook pulley block 4.
The winding method is characterized in that the winding method is as follows under the working condition that the tower arm or the auxiliary arm uses the pulley at the arm end: the method further comprises the step that the steel wire rope is wound with the hook pulley block 4, bypasses the tower arm head pulley block 16 and then is wound with the hook pulley block 4 after being guided by the top section guide pulley 15 and the tower arm end pulley head single pulley 18 from the main hoisting mechanism.
Specifically, in this embodiment, at least two groups of main arm head guide pulleys 5 are provided, the main arm head pulley block 6 is provided with at least six groups of pulleys, and the hook pulley 4 is provided with at least seven groups of pulleys;
the multiplying power of the steel wire rope can reach 13 multiplying powers: under the working condition that the main arm borrows the pulley at the arm end: the steel wire rope is guided by a main arm head guide pulley 5 and a main arm end pulley head single pulley 8 from a main hoisting mechanism, then is wound with a fourth pulley of a hook pulley block 4, returns to a second pulley of the main arm head pulley block 6 after bypassing the fourth pulley, returns to a first pulley of the main arm head pulley block 6 after bypassing a first pulley of the hook pulley block 4, is wound with a second pulley of the hook pulley block 4, returns to a third pulley of the main arm head pulley block 6 and is wound with a third pulley of the hook pulley block 4 after returning to a third pulley of the main arm head pulley block 6; returning to the fourth pulley of the main arm head pulley block 6 and then winding the fourth pulley of the main arm head pulley block 4 with the fifth pulley of the hook pulley block; and after returning to the fifth pulley of the main arm head pulley block 6, the third pulley is wound with the sixth pulley of the hook pulley block 4, and returns to the sixth pulley of the main arm head pulley block 6 to be locked on the hook.
The multiplying power of the steel wire rope can reach 14 multiplying powers: the steel wire rope is guided by a main arm head guide pulley 5 and a main arm end pulley head single pulley 8 from a main hoisting mechanism, then is wound with a fourth pulley of a hook pulley block 4, returns to a second pulley of the main arm head pulley block 6 after bypassing the fourth pulley, returns to a first pulley of the main arm head pulley block 6 after bypassing a first pulley of the hook pulley block 4, is wound with a second pulley of the hook pulley block 4, returns to a third pulley of the main arm head pulley block 6 and is wound with a third pulley of the hook pulley block 4 after returning to a third pulley of the main arm head pulley block 6; returning to the fourth pulley of the main arm head pulley block 6 and then winding the fourth pulley of the main arm head pulley block 4 with the fifth pulley of the hook pulley block; and after returning to the fifth pulley of the main arm head pulley block 6, the third pulley is wound with the sixth pulley of the hook pulley block 4, and after returning to the sixth pulley of the main arm head pulley block 6, the third pulley is wound with the seventh pulley of the hook pulley block 4, and the third pulley is locked at the head of the main arm.
Under the working condition that the tower arm or the auxiliary arm borrows the pulley at the arm end: the steel wire rope is guided by a top section guide pulley 15 and a tower arm end pulley head single pulley 18 from the main hoisting mechanism, then is wound with a fourth pulley of a hook pulley block 4, returns to a second pulley of the tower arm head pulley block 16 after passing by the fourth pulley, returns to a first pulley of the tower arm head pulley block 16 after passing by a first pulley of the hook pulley block 4, is wound with a second pulley of the hook pulley block 4, returns to a third pulley of the tower arm head pulley block 16 and is wound with a third pulley of the hook pulley block 4 after returning to a third pulley of the tower arm head pulley block 16; returning to the fourth pulley of the tower arm head pulley block 16 and then winding the fourth pulley of the tower arm head pulley block 4 with the fifth pulley of the hook pulley block; and after returning to the fifth pulley of the tower arm head pulley block 16, the third pulley is wound with the sixth pulley of the hook pulley block 4, and after returning to the sixth pulley of the tower arm head pulley block 6, the third pulley is wound with the seventh pulley of the hook pulley block 4 and then locked at the arm head of the main arm.
Under the working condition that the tower arm or the auxiliary arm borrows the pulley at the arm end: the steel wire rope is guided by a top section guide pulley 15 and a tower arm end pulley head single pulley 18 from the main hoisting mechanism, then is wound with a fourth pulley of a hook pulley block 4, returns to a second pulley of the tower arm head pulley block 16 after passing by the fourth pulley, returns to a first pulley of the tower arm head pulley block 16 after passing by a first pulley of the hook pulley block 4, is wound with a second pulley of the hook pulley block 4, returns to a third pulley of the tower arm head pulley block 16 and is wound with a third pulley of the hook pulley block 4 after returning to a third pulley of the tower arm head pulley block 16; returning to the fourth pulley of the tower arm head pulley block 16 and then winding the fourth pulley of the tower arm head pulley block 4 with the fifth pulley of the hook pulley block; and after returning to the fifth pulley of the tower arm head pulley block 16, the tower arm head pulley block is wound with the sixth pulley of the hook pulley block 4, returns to the sixth pulley of the tower arm head pulley block 6, is wound with the seventh pulley of the hook pulley block 4 and is locked at the tower arm head.
Under the working condition that the auxiliary arm borrows the pulley at the arm end: the principle is the same as the two winding modes, and redundant description is omitted here.
A crane comprises the winding method for increasing the magnification of the arm head pulley.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (9)
1. The winding method for increasing the multiplying power of the arm head pulley comprises a main arm bottom section (1), a main hoisting mechanism (2), a main arm (3) and a hook pulley block (4), wherein the main hoisting mechanism (2) is arranged on the side part of the main arm bottom section (1), the main arm bottom section (1) is connected with the main arm (3), a main arm head guide pulley (5) is arranged at one end of the top of the main arm (3), a main arm head pulley block (6) is arranged at the other end of the top of the main arm (3), and a main arm end pulley (7) is arranged at the end part of the main arm (3), and is characterized in that: the top of the main arm end pulley (7) is provided with a main arm end pulley head single pulley (8);
the winding mode of the main arm under the working condition of borrowing the pulley at the arm end is as follows: the steel wire rope is guided by a main arm head guide pulley (5) and a main arm end pulley head single pulley (8) from the main hoisting mechanism, then is wound with a hook pulley block (4) and then is wound with a main arm head pulley block (6).
2. The winding method for increasing the magnification of an arm head pulley according to claim 1, further comprising: the steel wire rope is guided by a main arm head guide pulley (5) and a main arm end pulley head single pulley (8) from the main hoisting mechanism, then is wound with the hook pulley block (4), bypasses a main arm head pulley block (6) and then is wound with the hook pulley block (4).
3. The winding method for increasing the magnification of the arm head pulley according to claim 1, wherein a main arm top section (9) is arranged at the top of the main arm (3), a tower arm bottom section (10) is arranged at the top of the main arm top section (9), and the tower arm bottom section (10) is connected with a tower arm (13); the end part of the tower arm (13) is provided with a tower arm top knuckle arm (14), and the top of the tower arm top knuckle arm (14) is provided with a tower arm end pulley (17).
4. The winding method for increasing the magnification of an arm head pulley according to claim 3, wherein the tower arm end pulley (17) is provided with a tower arm end pulley head single pulley (18).
5. The winding method for increasing the magnification of the arm head pulley according to claim 3, wherein the end of the tower arm top section arm (14) is provided with a top section guide pulley (15) at one end and a tower arm head pulley block (16) at the other end.
6. The winding method for increasing the magnification of the arm head pulley according to claim 3, wherein the top section (9) of the main arm is provided with a tower arm rear support (11), and the bottom section (10) of the tower arm is provided with a tower arm front support (12).
7. The winding method for increasing the multiplying power of the pulley at the arm head of the claim 3 is characterized in that the winding mode is as follows under the working condition that the tower arm or the auxiliary arm uses the pulley at the arm end: the steel wire rope is guided by a top section guide pulley (15) and a single pulley (18) at the head part of a pulley at the arm end of the tower arm from the main hoisting mechanism, then is wound with the hook pulley block (4), bypasses the pulley block (16) at the arm head of the tower arm and then is wound with the hook pulley block (4).
8. The winding method for increasing the magnification of the arm head pulley according to claim 3, characterized in that the method further comprises the steps that the steel wire rope is wound with the hook pulley block (4), bypasses the tower arm head pulley block (16) and is wound with the hook pulley block (4) after being guided by the top section guide pulley (15) and the tower arm end pulley head single pulley (18) from the main hoisting mechanism.
9. A crane, comprising the winding method for increasing the magnification of the arm head pulley according to any one of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111468581.8A CN114105007A (en) | 2021-12-03 | 2021-12-03 | A winding method and a crane for increasing the magnification of the pulley of the boom head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111468581.8A CN114105007A (en) | 2021-12-03 | 2021-12-03 | A winding method and a crane for increasing the magnification of the pulley of the boom head |
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| Publication Number | Publication Date |
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| CN114105007A true CN114105007A (en) | 2022-03-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111468581.8A Pending CN114105007A (en) | 2021-12-03 | 2021-12-03 | A winding method and a crane for increasing the magnification of the pulley of the boom head |
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| CN (1) | CN114105007A (en) |
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| CN203529798U (en) * | 2013-10-29 | 2014-04-09 | 中联重科股份有限公司 | Lifting devices and cranes |
| CN203833521U (en) * | 2014-05-23 | 2014-09-17 | 中联重科股份有限公司 | Cranes and their jib systems |
| CN110240071A (en) * | 2019-06-06 | 2019-09-17 | 徐工集团工程机械股份有限公司建设机械分公司 | A large pitch angle jib wire rope winding device and winding method |
| CN111439686A (en) * | 2020-05-19 | 2020-07-24 | 浙江三一装备有限公司 | Crawler cranes and lifting methods |
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2021
- 2021-12-03 CN CN202111468581.8A patent/CN114105007A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202744226U (en) * | 2012-08-06 | 2013-02-20 | 四川省第三建筑工程公司 | Hoisting tri-magnification rope winding olecranon-shaped arm head of moving arm tower crane |
| CN202880719U (en) * | 2012-08-18 | 2013-04-17 | 上海庞源机械租赁股份有限公司 | Olecranon-shaped arm head of hoisting multiplying power winding rope of movable arm tower-type crane |
| CN102864770A (en) * | 2012-09-27 | 2013-01-09 | 天津山河装备开发有限公司 | Efficient dynamic compaction machine |
| CN203529798U (en) * | 2013-10-29 | 2014-04-09 | 中联重科股份有限公司 | Lifting devices and cranes |
| CN203833521U (en) * | 2014-05-23 | 2014-09-17 | 中联重科股份有限公司 | Cranes and their jib systems |
| CN110240071A (en) * | 2019-06-06 | 2019-09-17 | 徐工集团工程机械股份有限公司建设机械分公司 | A large pitch angle jib wire rope winding device and winding method |
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