CN219489432U - Variable-magnification lifting hook pulley block structure - Google Patents
Variable-magnification lifting hook pulley block structure Download PDFInfo
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- CN219489432U CN219489432U CN202320627382.5U CN202320627382U CN219489432U CN 219489432 U CN219489432 U CN 219489432U CN 202320627382 U CN202320627382 U CN 202320627382U CN 219489432 U CN219489432 U CN 219489432U
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Abstract
The application discloses variable-magnification lifting hook pulley block structure, including lifting wire rope, cantilever crane tip, first pulley, lower pulley block, second pulley, balancer, third pulley, go up assembly pulley, fourth pulley, wedge cover and install in lifting hook in the middle of the lower pulley block bottom. The utility model gives consideration to the problems that the rope capacity of the lifting winch cannot meet the 4-multiplying power working condition and the 2-multiplying power working condition cannot meet the lifting capacity when the height of the tower crane is too high; the operation efficiency and the application range of the tower crane are improved.
Description
Technical Field
The application relates to a tower crane, in particular to a variable-magnification lifting hook pulley block structure.
Background
The working condition of the existing movable arm luffing tower crane is 2 or 4, and the problems that lifting height, lifting weight and lifting speed cannot be matched in construction are solved, namely, the proper lifting weight cannot be met, or the lifting height and the lifting weight are both proper, and the lifting speed cannot be met. The rope winding multiplying power of the lifting steel wire rope cannot be taken into consideration in terms of the lifting speed, the lifting weight and the lifting height of the tower crane, so that the application range of the tower crane is narrowed.
Disclosure of Invention
The utility model aims to provide a variable-magnification lifting hook pulley block structure, which not only enables a movable arm variable-amplitude type tower to operate under the working conditions of 4 multiplying power and 2 multiplying power, but also can realize the operation under the working condition of 3 multiplying power.
In order to achieve the above purpose, the present utility model provides the following technical solutions.
The embodiment of the application discloses a variable-magnification lifting hook pulley block structure, which comprises a lifting wire rope, an arm support end part, a first pulley, a lower pulley block, a second pulley, a balancer, a third pulley, an upper pulley block, a fourth pulley, a wedge sleeve and a lifting hook arranged in the middle of the bottom of the lower pulley block,
when the four-multiplying-power lifting is performed, the lifting steel wire rope firstly passes through the first pulley arranged at the end part of the arm support, then sequentially passes through the two second pulleys arranged side by side on the lower pulley block, then passes through the third pulley arranged on the balancer, then passes through the fourth pulley arranged on the upper pulley block, and finally is fixed on the wedge sleeve, the wedge sleeve is fixedly arranged at the end part of the arm support and is positioned between the first pulley and the third pulley, the balancer is arranged at the end part of the arm support, and the upper pulley block is arranged at the top of the lower pulley block;
when in three-multiplying-power lifting, the lifting steel wire rope firstly passes through the first pulley arranged at the end part of the arm support, then sequentially passes through the two second pulleys arranged side by side on the lower pulley block, then passes through the third pulley arranged at the balancer, and finally is fixed on the wedge sleeve which is fixedly arranged in the middle of the top part of the lower pulley block, and the balancer is arranged at the end part of the arm support;
when the crane is lifted at two multiplying powers, the lifting wire rope firstly passes through the first pulley arranged at the end part of the arm support, then sequentially passes through the two second pulleys arranged side by side on the lower pulley block, then passes through the third pulley arranged in the balancer, then passes through the fourth pulley arranged in the upper pulley block, and finally is fixed on the wedge sleeve, the wedge sleeve is fixedly arranged at the end part of the arm support and is positioned between the first pulley and the third pulley, the balancer is arranged at the end part of the arm support, and the upper pulley block is arranged at one side of the bottom of the balancer, which is close to the wedge sleeve.
Preferably, in the variable-magnification lifting hook pulley block structure, the variable-magnification lifting hook pulley block structure further comprises a balancing weight, and when the variable-magnification lifting hook pulley block structure is lifted in a quadruple rate, the balancing weight is connected between the lower pulley block and the upper pulley block; when the three multiplying powers are lifted, the balancing weight is arranged on the lower pulley block; and when the two multiplying powers are lifted, the balancing weight is arranged at the bottom of the lower pulley block.
Preferably, in the variable-magnification lifting hook pulley block structure, the variable-magnification lifting hook pulley block structure further comprises a torsion preventing device, wherein the torsion preventing device is arranged between the end part of the arm support and the wedge sleeve when the variable-magnification lifting hook pulley block structure is lifted by two times and is lifted by four times; when the three multiplying powers are lifted, the torsion preventing device is arranged between the wedge sleeve and the lower pulley block.
Preferably, in the variable-magnification lifting hook pulley block structure, the lifting steel wire rope is fixed on the wedge sleeve through a rope clamp.
Preferably, in the variable-magnification lifting hook pulley block structure, the balancing weight is provided with a magnification bolt.
Compared with the prior art, the utility model has the advantages that the problems that the height of the tower crane is too high, the rope capacity of the lifting winch cannot meet the 4-multiplying power working condition, and the 2-multiplying power working condition cannot meet the lifting capacity are solved; the operation efficiency and the application range of the tower crane are improved.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a perspective view of a quadruple rate hook block configuration in accordance with an embodiment of the present utility model;
FIG. 2 is a perspective view of a triple rate hook block and tackle structure in an embodiment of the present utility model;
fig. 3 is a perspective view of a two-rate hook pulley block structure according to an embodiment of the utility model.
Detailed Description
The following detailed description of the technical solutions according to the embodiments of the present utility model will be given with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
The variable-magnification lifting hook pulley block structure comprises a lifting wire rope 101, an arm support end 102, a first pulley 103, a lower pulley block 104, a second pulley 105, a balancer 106, a third pulley 107, an upper pulley block 108, a fourth pulley 109, a wedge sleeve 110 and a lifting hook 111 arranged in the middle of the bottom of the lower pulley block 104.
When the four-multiplying-power hoisting is performed, as shown in fig. 1, the hoisting wire rope 101 passes through the first pulley 103 installed at the arm support end 102, then sequentially passes through two second pulleys 105 arranged side by side on the lower pulley block 104, then passes through the third pulley 107 installed at the balancer 106, then passes through the fourth pulley 109 of the upper pulley block 108, and finally is fixed to the wedge sleeve 110, the wedge sleeve 110 is fixedly installed at the arm support end 102 and is positioned between the first pulley 103 and the third pulley 107, the balancer 106 is installed at the arm support end 102, and the upper pulley block 108 is installed at the top of the lower pulley block 104.
When the three-multiplying-power lifting is performed, as shown in fig. 2, the lifting steel wire rope 101 firstly passes through the first pulley 103 arranged at the end part 102 of the arm support, then sequentially passes through the two second pulleys 105 arranged side by side on the lower pulley block 104, then passes through the third pulley 107 arranged at the balancer 106, finally is fixed on the wedge sleeve 110, the wedge sleeve 110 is fixedly arranged in the middle of the top part of the lower pulley block 104, and the balancer 106 is arranged at the end part 102 of the arm support.
When the two-multiplying-power hoisting is performed, as shown in fig. 3, the hoisting wire rope 101 passes through the first pulley 103 installed at the arm support end 102, then sequentially passes through the two second pulleys 105 arranged side by side on the lower pulley block 104, then passes through the third pulley 107 installed at the balancer 106, then passes through the fourth pulley 109 of the upper pulley block 108, finally is fixed at the wedge sleeve 110, the wedge sleeve 110 is fixedly installed at the arm support end 102 and is positioned between the first pulley 103 and the third pulley 107, the balancer 106 is installed at the arm support end 102, and the upper pulley block 108 is installed at one side, close to the wedge sleeve 110, of the bottom of the balancer 106.
In the embodiment, the movable arm luffing tower can work under the working conditions of 4 multiplying power and 2 multiplying power, and can work under the working condition of 3 multiplying power.
Further, the device also comprises a balancing weight 112, wherein when the quadruple rate is lifted, the balancing weight 112 is connected between the lower pulley block 104 and the upper pulley block 108; when the three multiplying powers are lifted, the balancing weight 112 is arranged on the lower pulley block 104; when the two multiplying powers are lifted, the balancing weight 112 is installed at the bottom of the lower pulley block 104. The torsion preventing device 113 is arranged between the arm support end 102 and the wedge sleeve 110 when the two-multiplying power lifting and the four-multiplying power lifting are carried out; when the three multiplying powers are lifted, the torsion preventing device 113 is arranged between the wedge sleeve 110 and the lower pulley block 104. The lifting wire 101 is secured to the wedge 110 by a rope clamp 114. The balancing weight 112 is provided with a multiplying power bolt 115.
The technical scheme also sets the counterweight and other structures in the general structure, such as the torsion preventer is used for preventing the rope from twisting.
When the device is specifically used, the operation method for changing the wire rope threading from 4 multiplying power to 3 multiplying power in the no-load state of the tower crane is as follows: the lifting and lifting are operated, when the upper pulley block is close to the balancer, the lifting and lifting steel wire rope is locked on the balancer by the rope clamp on the right side of the balancer, the lifting and lifting are operated until the upper pulley block is close to the right lower side of the balancer, the upper pulley block is connected with the balancer by the pin shaft and the spring bolt which are stored on the balancer, the pulley on the balancer is rotated to the corresponding position and fixed, the rope clamp is detached from the upper pulley block, the lifting steel wire rope is locked on the upper pulley block by the rope clamp, the pin shaft for connecting the torsion preventer with the end section of the arm support is detached, the rope clamp on the right side of the balancer is unscrewed and detached, the pin shaft and the spring bolt which lock the upper pulley block and the balancer are detached, the pin shaft and the spring bolt are installed on the balancer before, the lifting and the lifting are operated to descend to enable the upper pulley block, the lower pulley block and the lifting hook to be lowered to the ground, removing the multiplying power pin shaft and the cotter pin to disconnect the upper pulley block and the lower pulley block, then removing the balancing weight from the upper pulley block and installing the balancing weight on the lower pulley block, fastening the balancing weight by bolts, nuts and gaskets, removing the pin shaft and the cotter pin to disconnect the connection between the anti-torsion device and the wedge sleeve, unscrewing and removing a rope clamp fastened on the upper pulley block before removing the pin shaft and the cotter pin, removing the steel wire rope from the wedge sleeve, withdrawing the steel wire rope from the upper pulley block, at the moment, completely separating the upper pulley block from the whole lifting hook pulley block system, fixing the steel wire rope on the wedge sleeve, fixing the free end of the steel wire rope by the rope clamp, installing the wedge sleeve to the anti-torsion device on the adapter by the pin shaft and the cotter pin, installing the adapter to the lower pulley block by the multiplying power pin shaft and the cotter pin, operating the lifting to tighten the lifting steel wire rope and enable the lower pulley block to leave the ground, at the moment, converting the 4 multiplying power into 3 multiplying power steel wire rope threading, the lifting limit switch also needs to be readjusted, otherwise, the pulley block steel wire rope can be changed from 3 multiplying power to 4 multiplying power in a threading way.
The operation method for changing the pulley block steel wire rope threading from 4 multiplying power to 2 multiplying power in the no-load state of the tower crane is as follows: and operating the lifting device to descend until the lifting hook pulley block is placed on the ground, and removing the multiplying power pin shaft and the cotter pin to disconnect the upper pulley block from the lower pulley block. The lifting is operated to make the upper pulley block leave the lower pulley block, the multiplying power pin shaft and the cotter pin are reinstalled to the upper pulley block, the lifting is continuously operated to make the upper pulley block only lean under the balancer, the pin shaft and the spring pin stored on the balancer are used for connecting the upper pulley block and the balancer, the lifting is continuously operated to make the lower pulley block leave the ground, at the moment, the 4 multiplying power is converted into the 2 multiplying power for the wire rope to pass around, the lifting limit switch also needs to be readjusted, and otherwise, the pass around of the wire rope of the pulley block can be converted from 2 multiplying power to 4 multiplying power.
The operation method for changing the pulley block steel wire rope threading from 3 multiplying power to 2 multiplying power in the no-load state of the tower crane is as follows: firstly, converting from 3 multiplying power to 4 multiplying power, then converting from 4 multiplying power to 2 multiplying power, and then readjusting the lifting limit switch.
The utility model has the advantages that the problems that the rope capacity of the lifting winch cannot meet the 4-multiplying power working condition and the 2-multiplying power working condition cannot meet the lifting capacity due to the too high height of the tower crane are solved; the operation efficiency and the application range of the tower crane are improved.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The foregoing is merely exemplary of the application and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the application and are intended to be comprehended within the scope of the application.
Claims (5)
1. A variable-magnification lifting hook pulley block structure is characterized by comprising a lifting steel wire rope, an arm support end part, a first pulley, a lower pulley block, a second pulley, a balancer, a third pulley, an upper pulley block, a fourth pulley, a wedge sleeve and a lifting hook arranged in the middle of the bottom of the lower pulley block,
when the four-multiplying-power lifting is performed, the lifting steel wire rope firstly passes through the first pulley arranged at the end part of the arm support, then sequentially passes through the two second pulleys arranged side by side on the lower pulley block, then passes through the third pulley arranged on the balancer, then passes through the fourth pulley arranged on the upper pulley block, and finally is fixed on the wedge sleeve, the wedge sleeve is fixedly arranged at the end part of the arm support and is positioned between the first pulley and the third pulley, the balancer is arranged at the end part of the arm support, and the upper pulley block is arranged at the top of the lower pulley block;
when in three-multiplying-power lifting, the lifting steel wire rope firstly passes through the first pulley arranged at the end part of the arm support, then sequentially passes through the two second pulleys arranged side by side on the lower pulley block, then passes through the third pulley arranged at the balancer, and finally is fixed on the wedge sleeve which is fixedly arranged in the middle of the top part of the lower pulley block, and the balancer is arranged at the end part of the arm support;
when the crane is lifted at two multiplying powers, the lifting wire rope firstly passes through the first pulley arranged at the end part of the arm support, then sequentially passes through the two second pulleys arranged side by side on the lower pulley block, then passes through the third pulley arranged in the balancer, then passes through the fourth pulley arranged in the upper pulley block, and finally is fixed on the wedge sleeve, the wedge sleeve is fixedly arranged at the end part of the arm support and is positioned between the first pulley and the third pulley, the balancer is arranged at the end part of the arm support, and the upper pulley block is arranged at one side of the bottom of the balancer, which is close to the wedge sleeve.
2. The variable-magnification lifting hook pulley block structure according to claim 1, further comprising a balancing weight, wherein the balancing weight is connected between the lower pulley block and the upper pulley block when the four-time rate lifting is performed; when the three multiplying powers are lifted, the balancing weight is arranged on the lower pulley block; and when the two multiplying powers are lifted, the balancing weight is arranged at the bottom of the lower pulley block.
3. The variable-magnification lifting hook pulley block structure according to claim 1, further comprising a torsion preventer, wherein the torsion preventer is arranged between the end part of the arm support and the wedge sleeve when the two-magnification lifting and the four-magnification lifting are performed; when the three multiplying powers are lifted, the torsion preventing device is arranged between the wedge sleeve and the lower pulley block.
4. The variable magnification hook block and tackle structure of claim 1, wherein the lifting wire rope is fixed to the wedge sleeve by a rope clip.
5. The variable-magnification lifting hook pulley block structure according to claim 2, wherein the balancing weight is provided with a magnification bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320627382.5U CN219489432U (en) | 2023-03-28 | 2023-03-28 | Variable-magnification lifting hook pulley block structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320627382.5U CN219489432U (en) | 2023-03-28 | 2023-03-28 | Variable-magnification lifting hook pulley block structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219489432U true CN219489432U (en) | 2023-08-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320627382.5U Active CN219489432U (en) | 2023-03-28 | 2023-03-28 | Variable-magnification lifting hook pulley block structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219489432U (en) |
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- 2023-03-28 CN CN202320627382.5U patent/CN219489432U/en active Active
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