CN113264458A - Tower crane system and method for removing attachment rod thereof - Google Patents
Tower crane system and method for removing attachment rod thereof Download PDFInfo
- Publication number
- CN113264458A CN113264458A CN202010095255.6A CN202010095255A CN113264458A CN 113264458 A CN113264458 A CN 113264458A CN 202010095255 A CN202010095255 A CN 202010095255A CN 113264458 A CN113264458 A CN 113264458A
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- China
- Prior art keywords
- attachment
- hoist
- rod
- tower crane
- attachment rod
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Classifications
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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
- B66C23/18—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 specially adapted for use in particular purposes
- B66C23/20—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 specially adapted for use in particular purposes with supporting couples provided by walls of buildings or like structures
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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
- B66C11/00—Trolleys or crabs, e.g. operating above runways
- B66C11/02—Trolleys or crabs, e.g. operating above runways with operating gear or operator's cabin suspended, or laterally offset, from runway or track
- B66C11/04—Underhung trolleys
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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
- B66C13/00—Other constructional features or details
- B66C13/04—Auxiliary devices for controlling movements of suspended loads, or preventing cable slack
- B66C13/08—Auxiliary devices for controlling movements of suspended loads, or preventing cable slack for depositing loads in desired attitudes or positions
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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
- B66C23/16—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 with jibs supported by columns, e.g. towers having their lower end mounted for slewing movements
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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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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G3/00—Scaffolds essentially supported by building constructions, e.g. adjustable in height
- E04G3/28—Mobile scaffolds; Scaffolds with mobile platforms
- E04G3/30—Mobile scaffolds; Scaffolds with mobile platforms suspended by flexible supporting elements, e.g. cables
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G3/00—Scaffolds essentially supported by building constructions, e.g. adjustable in height
- E04G3/28—Mobile scaffolds; Scaffolds with mobile platforms
- E04G3/30—Mobile scaffolds; Scaffolds with mobile platforms suspended by flexible supporting elements, e.g. cables
- E04G3/32—Hoisting devices; Safety devices
Abstract
The invention relates to the field of construction machinery, and provides a tower crane system. The tower crane system includes: the tower crane comprises a tower crane body, a cantilever type travelling crane, a first operating platform, a second operating platform and a second hoisting block. The first hoisting block of the cantilever type crane is used for hoisting and pulling the attachment rod, and the second hoisting block is used for lowering the attachment rod. Through the cooperation of these two hoisting hoists, pull out the attachment rod from the building structure to first hoisting hoist can also be carried the attachment rod to the lifting hook of tower crane body. The first operating platform may be a working platform for a constructor to remove the attachment bar from the cantilevered row crane and mount it to the hook. The second operating platform is used as a working platform for constructors to detach the attachment rod from the tower crane body and install the attachment rod to the first hoisting block and the lifting hook. The invention aims to reduce the difficulty and safety risk of detaching an attachment rod. The invention also provides a method for removing the attaching rod of the tower crane system.
Description
Technical Field
The invention relates to the field of construction machinery, in particular to a tower crane system and a method for dismantling an attachment rod thereof.
Background
When the height of the tower crane exceeds the maximum independent height of the tower crane, the tower crane is further lifted, and in order to avoid collapse of the tower crane, constructors can connect the tower crane to a building structure through the attachment rods. However, the removal of the attachment mast of the tower crane is a dangerous task. At present, most of the attachment rods of the tower cranes are detached by taking the tower crane as auxiliary hoisting equipment. The conventional demolition method has the following drawbacks:
(1) the slewing of the upper part of the tower crane is limited. The tower crane needs to lower its height to a level below the height of the attached building structure before the attachment mast is removed, thus limiting the slewing of the upper part of the tower crane.
(2) When the attachment rod is long, it is difficult to disassemble and the safety risk is large. When the tower crane self dismantles and adheres to the member, must draw to one side and drag to adhere to the pole. However, when the attachment rod is long, the self weight of the attachment rod is large, or one end of the attachment rod extends deep into the building structure, it becomes very difficult and a great safety risk to detach the attachment rod only by the tower crane itself.
(3) The glass curtain wall may be damaged. When the tower crane is used for disassembling the attachment rod which extends into the ultrahigh building structure, the glass curtain wall at the attachment point position on one side of the building structure is often installed, and only a narrow hole is reserved at the attachment point. If the tower crane is only used for obliquely pulling and obliquely hanging the tower crane to disassemble the attachment rod, the curtain wall glass is difficult to be prevented from being damaged when the attachment rod is moved out of the hole.
Disclosure of Invention
In order to reduce the difficulty and safety risk of detaching the attachment rod, the invention provides a tower crane system and a detaching method of the attachment rod thereof.
The tower crane system comprises: the tower crane comprises a tower crane body, a lifting hook and a plurality of standard joints, wherein the tower crane body comprises a sleeve frame, the lifting hook can lift an attachment rod, and the standard joints are vertically connected in sequence; the cantilever type crane comprises a track beam, a first hoisting block and at least one supporting arm, wherein one end of the supporting arm is connected with the sleeve frame, the other end of the supporting arm extends to a building structure connected with the attachment rod and is connected with the track beam, the first hoisting block can move towards the direction close to or far away from the lifting hook along the track beam, and the first hoisting block is used for hoisting the attachment rod; the first operating platform is connected with the sleeve frame and used for bearing constructors, so that the constructors can release the attachment rod from the first lifting block and install the attachment rod to the lifting hook; the second operating platform is detachably connected with one standard section and used for bearing constructors, so that the constructors can detach the attachment rod from one standard section and install the attachment rod to the first heavy hoist, and can detach the attachment rod from the first heavy hoist and install the attachment rod to the lifting hook; a second hoist for mounting to the building structure and for hoisting the attachment bar.
According to one embodiment of the invention, a third hoisting block is further included, which is connected to the same standard knot as the attachment bar, and which is mounted higher than the second operating platform and which is used for hoisting and pulling the attachment bar.
According to one embodiment of the invention, the first operation platform is provided with a first guy rope, which may be used for connecting the attachment rod.
According to one embodiment of the invention, the second operation platform is provided with a second guy rope, which may be used for connecting the attachment rod.
According to one embodiment of the invention, the lifting hook further comprises a third operating platform, the third operating platform is connected with the sleeve frame and is positioned below the first operating platform, and the third operating platform is used for bearing constructors, so that the constructors can detach the attachment rods from the first lifting block and install the attachment rods to the lifting hooks.
According to one embodiment of the invention, the third operation platform is provided with a third guy rope, which may be used for connecting the attachment rod.
According to one embodiment of the invention, the cantilever crane further comprises at least one inclined strut and at least one stay cable, the support arm is connected to the sleeve frame through a pin shaft, the at least one inclined strut correspondingly supports the at least one support arm, and the at least one stay cable correspondingly drags the at least one support arm.
According to one embodiment of the invention, the two ends of the track beam are provided with the limiting plates.
The invention also provides a method for removing the attaching rod of the tower crane system, which comprises the following steps: the attachment rod is disconnected from the standard knot, and the attachment rod is mounted to a first lifting block, wherein the first lifting block is arranged on a sleeve frame above the standard knot; disconnecting the attachment bar from the building structure and connecting the attachment bar to a second hoist block, the second hoist block being disposed on the building structure; the attachment rod is pulled upwards through the first hoist and is lowered through the second hoist; when the attachment rod is completely moved out of the building structure, the first hoisting block stops pulling the attachment rod upwards, and the attachment rod is continuously lowered through the second hoisting block until the attachment rod reaches a vertical posture; the attachment rod is disconnected from the second hoist; the first hoisting block hoisting attachment rod moves to a position closest to a lifting hook of the tower crane, and then the attachment rod is connected to the lifting hook; the attachment rod is hung and pulled through the lifting hook, and when the steel wire rope of the first hoisting block is loosened, the connection between the first hoisting block and the attachment rod is released; the lifting hook continues to hoist and pull the attachment rod and hoist the attachment rod to the ground.
Compared with the prior art, the technical scheme provided by the embodiment of the application has the following advantages:
the first hoist block and the second hoist block may be connected to the attachment rod, respectively, and then disconnected from the building structure and the standard knot, respectively. The first hoist then pulls the attachment rod up while the second hoist lowers the attachment rod down until the attachment rod is pulled out of the building. Through the cooperation of these two hoisting blocks, the adhesion rod can be demolishd from the building safely high-efficiently. The first hoist can also drive the adhesion rod to remove to the lifting hook to make things convenient for adhesion rod safety efficient to be connected to the lifting hook, avoid the lifting hook to hang the adhesion rod to one side, also avoided tower crane operation violating the regulations. The first operating platform is used for bearing constructors, so that the constructors can remove the attachment rod from the first lifting hoist and install the attachment rod to the lifting hook. The second operation platform is used for bearing constructors, so that the constructors can detach the attachment rod from one standard knot and install the attachment rod to the first lifting hoist, and the constructors can detach the attachment rod from the first lifting hoist and install the attachment rod to the lifting hook. Therefore, the tower crane system and the method for removing the attachment rod thereof can reduce the difficulty and safety risk of removing the attachment rod.
Drawings
FIG. 1 is a schematic view of an attachment bar connection in one embodiment of the present invention;
FIG. 2 is a schematic side view of a cantilever-type crane according to an embodiment of the present invention;
FIG. 3 is a schematic front view of a cantilever-type crane according to an embodiment of the present invention;
FIG. 4 is a partial schematic view of an attachment bar connection in accordance with one embodiment of the present invention;
fig. 5 is a partial schematic view of a first hoist, a second hoist and a third hoist being respectively connected to an attachment pole in accordance with an embodiment of the present invention;
FIG. 6 is a partial schematic view of a davit attachment bar in accordance with an embodiment of the present invention;
FIG. 7 is a partial schematic view of a davit attachment bar in accordance with yet another embodiment of the present invention;
FIG. 8 is a partial schematic view of a davit attachment bar in accordance with yet another embodiment of the present invention;
FIG. 9 is a partial schematic view of the first hoist moving toward the hook in one embodiment of the present invention;
FIG. 10 is a partial schematic view of an attachment bar coupled to a hook in accordance with one embodiment of the present invention;
FIG. 11 is a schematic view of a hook sling attachment bar in accordance with one embodiment of the present invention;
figure 12 is a schematic view of a hook sling attachment bar according to yet another embodiment of the present invention.
Reference numerals:
10. a tower crane body; 102. sleeving a frame; 104 standard section; 12. hanging in a cantilever type; 121. a track beam; 122. a support arm; 123. a first heavy hoist; 124. a diagonal brace; 125. a stay cable; 14. a first operating platform; 16. a second operating platform; 18. a second hoist block; 20. A third hoisting block; 22. and a third operating platform.
Detailed Description
In order that the above objects, features and advantages of the present invention can be more clearly understood, the present invention will be further described in detail with reference to the accompanying drawings and examples. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. The specific embodiments described herein are merely illustrative of the invention and are not to be construed as limiting the invention. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the invention, are within the scope of the invention.
As shown in FIG. 1, in one embodiment of the present invention, a tower crane system includes a tower crane body 10. The tower crane body 10 includes a frame 102, a plurality of standard knots 104 and a hook. The standard joints 104 are connected vertically in sequence, and the frame 102 can move vertically along the standard joints 104, for example: the holster 102 climbs upward along the standard knuckles 104. It should be noted that the tower crane body 10 is a device known in the art, and the specific structure and operation method thereof are known to those skilled in the art (for example, the specific structure and connection manner of the frame 102 and the standard knot 104, the matching manner of the hook and the boom, etc.), and the present invention is not described herein.
In one embodiment of the present invention, a tower crane system includes a jib crane 12. The cantilevered traveling crane 12 includes a rail beam 121, a first hoist 123, and at least one support arm 122.
As shown in fig. 2 to 3, in the present embodiment, one end of the support arm 122 is connected to the jacket 102, and the other end of the support arm 122 extends towards the building structure to which the attachment pole is connected (or, the support arm 122 and the attachment pole are located on the same side of the tower crane body 10). The other end of the support arm 122 is connected (e.g., welded or pinned) to the rail beam 121. A diagonal brace 124 may be disposed below the support arm 122, one end of the diagonal brace 124 being connected to the holster 102 and the other end being connected to the support arm 122. The diagonal braces 124 may serve as an auxiliary support so that the support arms 122 may withstand greater tension. A stay cable 125 may be disposed above the support arm 122, and one end of the stay cable 125 is connected to the jacket frame 102 and the other end is connected to the support arm 122. The stay cables 125 may serve as auxiliary supports so that the support arms 122 may bear a greater tensile force. It is of course also possible to provide a plurality of diagonal braces 124 to enhance the support of the support arms 122. For example: the number of the inclined supporting rods 124 is 2, and the two inclined supporting rods are arranged at the same height of the sleeve frame 102 at intervals.
As shown in fig. 2 to 3, in the present embodiment, the rail beam 121 extends toward a direction close to the hook. In a preferred embodiment, the rail beams 121 may be respectively coupled to the other ends (i.e., free ends) of the two support arms 122, and the rail beams 121 are disposed to extend horizontally so that the first lifting block 123 may be smoothly moved. The rail beam 121 may be machined from i-steel, and thus may carry a large force.
As shown in fig. 2 to 3, in the present embodiment, the first hoist 123 is connected to the rail beam 121, and the first hoist 123 may be used to hoist (or pull up) the attachment rod. The first hoist 123 may move back and forth along the rail beam 121. That is, the first hoist 123 may move in a direction approaching the hook along the rail beam 121, and may also move in a direction away from the hook. Both ends of the rail beam 121 may be respectively provided with a limiting plate for preventing the first hoist 123 from slipping. It should be noted that the first hoist 123 is a hoist that is commonly used in the art, and the structure and the operation manner thereof are known to those skilled in the art, and are not described herein again. The first hoist 123 is preferably an electric hoist (a wheel for moving the electric hoist along the rail beam 121 is mounted on the electric hoist).
In one embodiment of the present invention, the tower crane system further includes a first operations platform 14 coupled to the holster 102. The first operation platform 14 includes a bottom plate of a metal mesh sheet and a fence provided on the bottom plate (the fence can protect a constructor). The first work platform 14 may serve as a work platform for carrying the constructors. With the aid of this work platform, the constructor can mount the jib crane 12 to the jacket 102 and also manipulate the operation of the first hoist on the work platform, for example: the attachment rod pulled up by the first hoist 123 is connected to the hook, and the connection of the first hoist 123 to the attachment rod can be released. Additionally, a first hawser may be disposed on the first work platform 14. In the process of hanging and pulling the attachment rod by the lifting hook, the first guy rope can be connected with the attachment rod and tensioned, so that the attachment rod is prevented from shaking back and forth.
As shown in fig. 4-8, in one embodiment of the present invention, the tower crane system may further include a second operations platform 16. The second operation platform 16 includes a bottom plate of a metal mesh sheet and a fence provided on the bottom plate (the fence can protect a constructor). The second work platform 16 is removably mounted to a standard knot 104 attached to the attachment bar and the second work platform 16 is located below the first work platform 14. The second work platform 16 may serve as a work platform for carrying the construction personnel. With the work platform, the constructor can remove the attachment rod from the standard knot 104 and install the attachment rod to the first lifting block 123, can connect the attachment rod lifted by the first lifting block 123 to the hook, and can remove the connection between the first lifting block 123 and the attachment rod. In addition, a second guy rope can be arranged on the second operating platform 16, and the second guy rope can be connected with the attaching rod for tensioning, so that the attaching rod is prevented from shaking back and forth. Of course, the first and second guy wires may be the same guy wire.
As shown in fig. 4-8, in one embodiment of the present invention, the tower crane system may further include a second hoist 18. The second hoist 18 is mounted to the building structure, for example above or below the attachment point of the attachment bar. The second hoist 18 may hoist the attachment rod and may cooperate with the first hoist 123 to hoist and lower the attachment rod in a vertical posture. It should be noted that the second hoist 18 is a hoist that is commonly used in the art, and the structure and operation thereof are known to those skilled in the art and will not be described herein. The second hoist 18 is preferably a wire rope type lever hoist.
As shown in fig. 11-12, in one embodiment of the present invention, the tower crane system may include a third operations platform 22. The third operation platform 22 includes a bottom plate of a metal mesh sheet and a fence provided on the bottom plate (the fence can protect a constructor). The third operator station 22 is mounted to the holster 102 and is positioned below the first operator station 14. The third operation platform 22 may serve as a working platform for supporting a worker, and by means of the working platform, the worker may detach the attaching rod from the first hoist 123 and mount it to the hook of the tower crane body 10. Of course, the tower crane system may not be provided with the third operating platform 22, and the constructor may detach the attaching rod from the first hoist 123 and mount the attaching rod to the hook of the tower crane body 10 directly by means of the first operating platform 14 or the second operating platform 16. In addition, a third hawser may be provided on the third operations platform 22. In the process of hanging and pulling the attachment rod by the lifting hook, the third guy rope can be connected with the attachment rod and tensioned, so that the attachment rod is prevented from shaking back and forth. Of course, the first guy rope, the second guy rope and the third guy rope may be the same guy rope.
As shown in fig. 4 to 8, in one embodiment of the present invention, the tower crane system may further include a third hoist 20. The third hoist 20 is connected to the same standard knot 104 as the second operating platform 16, and the third hoist 20 is mounted higher than the second operating platform 16. The third hoist 20 may be connected to the attaching rod and hoisted simultaneously with the first hoist 123. The third hoist 20 prevents the attaching rod from rocking during the process of releasing the connection with the standard knot 104. Of course, the third hoist 20 may not be provided, but the movement of the attaching lever needs to be controlled more carefully when the attaching lever is disconnected from the standard knot 104. It should be noted that the third hoist 20 is a hoist that is commonly used in the art, and the structure and operation manner thereof are known to those skilled in the art and will not be described herein again. The third hoist 20 is preferably an inverted chain type chain block.
The first removal method of the attachment bar is described in detail below with reference to fig. 1 to 12.
As shown in fig. 1, the attachment rod is connected at one end to the building structure and at the other end to one standard knot 104 of the tower crane body 10 (specifically, the attachment rod is connected to one standard knot through one attachment frame).
In a first step, as shown in fig. 4 to 5, the wire rope of the first hoist 123 is lowered to the second operating platform 16, and then the wire rope thereof is connected to the attachment rod, and then the connection of the attachment rod to the standard knot 104 is released.
In addition, when the tower crane system is provided with the third hoist 20, the chain block of the third hoist 20 may be lowered and connected to the attaching rod, then the wire rope of the first hoist 123 may be connected to the attaching rod, and then the connection of the third hoist 20 and the attaching rod may be released. The chain block of the third hoist 20 prevents the attachment bar from swinging during the process of disconnecting the attachment bar from the standard knot 104.
In the second step, as shown in fig. 4 to 5, the wire rope of the second hoist block 18 is lowered, and then the wire rope thereof is connected to the attaching rod, and then the connection of the attaching rod to the building structure is released.
Third, as shown in fig. 6, the wire rope of the first hoist block 123 is lifted and simultaneously the wire rope of the second hoist block 18 is lowered, so that the attachment rod is slowly removed from the building structure. As shown in fig. 7, when the attachment bar is completely removed from the building structure, the first hoist 123 stops lifting. As shown in fig. 7 to 8, the lowering of the wire rope of the second hoist 18 is then continued until the attachment bar reaches the vertical attitude. The connection between the wire rope of the second hoist 18 and the attachment bar is then released. Of course, the operator can release the connection between the attachment bar and the second hoist 18 on the second work platform 16.
In the fourth step, the attaching rod is continuously pulled up by the first hoist 123 until the attaching rod reaches the first operation platform 14. As shown in fig. 9 to 10, the first hoist 123 is then controlled to move in a direction to approach the hook. The sling previously attached to the attachment bar is then connected (on the third operating platform 22) to the hook, as shown in fig. 11. Meanwhile, a first guy rope can be tied on the attachment rod (the first guy rope can prevent the attachment rod from shaking in the process of hoisting). The attachment rod is lifted by the hook until the wire rope of the first hoist 123 is loosened, and then the connection between the wire rope of the first hoist 123 and the attachment rod is released. As shown in fig. 12, the hook continues to move the attaching rod while slowly releasing the first guy rope, so that the attaching rod gradually changes from the inclined state to the vertical state (when the attaching rod is connected to the hook, the attaching rod is in an inclined posture because the first hoist 123 is difficult to move right under the hook). When the attachment bar is fully turned to the upright position, the first hawser is fully released. Then the attaching rod is hoisted to the ground through the tower crane body 10, thereby completing the detachment of the entire attaching rod.
A second method of detaching the attachment bar is described in detail below.
The first to third steps are the same as the first removal method, and are not described again.
And fourthly, continuously pulling up the attaching rod through the first lifting block 123 until the attaching rod reaches the third operating platform 22, and then controlling the first lifting block 123 to move towards the direction close to the lifting hook. The sling previously provided on the attachment bar is then connected (on the third operating platform 22) to the hook. Meanwhile, a third guy rope can be tied on the attachment rod (the third guy rope can prevent the attachment rod from shaking in the process of hoisting). The attachment rod is lifted by the hook until the wire rope of the first hoist 123 is loosened, and then the connection between the wire rope of the first hoist 123 and the attachment rod is released. Then the hook continues to drive the attaching rod to move, and at the same time the third guy rope is slowly loosened, so that the attaching rod gradually turns to the vertical state from the inclined state (since the first hoist 123 is difficult to reach right below the hook, the attaching rod is in a slightly inclined posture when being connected to the hook). When the attachment rod is completely turned to the vertical posture, the third guy rope is completely loosened, and then the attachment rod is hung to the ground through the tower crane body 10, thereby completing the detachment of the entire attachment rod.
A third method of detaching the attachment bar is described in detail below.
In the first step, the wire rope of the first hoist 123 is lowered to the second operating platform 16, and then the wire rope is connected to the attachment rod, and then the connection between the attachment rod and the standard knot 104 is released.
In addition, when the tower crane system is provided with the third hoist 20, the chain block of the third hoist 20 may be lowered and connected to the attaching rod, then the wire rope of the first hoist 123 may be connected to the attaching rod, and then the connection of the third hoist 20 and the attaching rod may be released.
In the second step, the wire rope of the second hoist block 18 is lowered, and then the wire rope is connected to the attachment rod, and then the attachment rod is disconnected from the building structure.
In a third step, the wire rope of the first hoist 123 is lifted and simultaneously the wire rope of the second hoist 18 is lowered, so that the attachment bar is slowly removed from the building structure. When the attachment bar is completely removed from the building structure, the first lifting block 123 stops lifting. And then the wire rope of the second hoist block 18 is continuously lowered until the attachment rod reaches the vertical posture. The connection between the wire rope of the second hoist 18 and the attachment bar is then released. Of course, the operator can release the connection between the attachment bar and the second hoist 18 on the second work platform 16.
And fourthly, controlling the first hoisting block 123 to move towards the direction close to the lifting hook. Then (on the third operating platform 22) the sling reserved on the attachment bar is connected to the hook, while a second guy rope can be tied on the attachment bar (the second guy rope can prevent the attachment bar from shaking during the hoisting process). The attachment rod is lifted by the hook until the wire rope of the first hoist 123 is loosened, and then the connection between the wire rope of the first hoist 123 and the attachment rod is released. Then the lifting hook continues to drive the attaching rod to move, and meanwhile, the second guy rope is slowly loosened, so that the attaching rod is gradually changed from the inclined state to the vertical state. When the attachment rod is completely turned to the vertical posture, the second guy rope is completely loosened, and then the attachment rod is hung to the ground through the tower crane body 10, thereby completing the detachment of the entire attachment rod.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (9)
1. A tower crane system, comprising:
the tower crane comprises a tower crane body, a lifting hook and a plurality of standard joints, wherein the tower crane body comprises a sleeve frame, the lifting hook can lift an attachment rod, and the standard joints are vertically connected in sequence;
the cantilever type travelling crane is connected to the sleeve frame and comprises a track beam, a first hoisting block and at least one supporting arm, one end of the supporting arm is connected with the sleeve frame, the other end of the supporting arm extends to a building structure connected with the attachment rod and is connected with the track beam, the first hoisting block is connected with the track beam and can move towards the direction close to or away from the lifting hook along the track beam, and the first hoisting block is used for hoisting the attachment rod;
the first operating platform is connected with the sleeve frame and used for bearing constructors, so that the constructors can detach the attachment rod from the first lifting hoist and mount the attachment rod to the lifting hook;
a second operation platform detachably connected with one standard knot, wherein the second operation platform is used for bearing constructors, so that the constructors can detach the attachment rod from one standard knot and install the attachment rod to the first lifting hoist, and can detach the attachment rod from the first lifting hoist and install the attachment rod to the lifting hook;
a second hoist for mounting to a building structure and for hoisting an attachment pole.
2. The tower crane system of claim 1, further comprising a third hoist connected to the same standard knot as the attachment bar, the third hoist being mounted higher than the second operating platform, the third hoist being configured to hoist the attachment bar.
3. A tower crane system according to claim 1, wherein the first operations platform is provided with a first guy cable which may be used for attaching an attachment rod.
4. A tower crane system according to claim 1, wherein the second operations platform is provided with a second guy cable which may be used for attaching an attachment rod.
5. The tower crane system of claim 1, further comprising a third operator platform connected to the jacket frame and located below the first operator platform, the third operator platform for carrying a worker such that the worker can remove an attachment bar from the first hoist and mount the attachment bar to the hook.
6. A tower crane system according to claim 5, wherein the third operations platform is provided with a third guy cable which may be used for attaching an attachment rod.
7. The tower crane system of claim 1, wherein the cantilevered traveling crane further comprises at least one brace and at least one stay cable, the support arm is coupled to the nest bracket by a pin, at least one brace supports at least one support arm, and at least one stay cable pulls at least one support arm.
8. The tower crane system of claim 1, wherein limiting plates are provided at both ends of the rail beam.
9. A method of removing an attachment bar of a tower crane system, comprising:
removing the attachment rod from the standard knot and mounting the attachment rod to a first lifting block, wherein the first lifting block is arranged on a jacket frame above the standard knot;
releasing the attachment bar from the building structure and connecting the attachment bar to a second hoist block disposed on the building structure;
pulling up the attachment rod by the first hoist and simultaneously lowering the attachment rod by the second hoist;
when the attachment bar is completely removed from the building structure, the first hoist stops pulling up the attachment bar and continues to lower the attachment bar through the second hoist until the attachment bar reaches an upright position;
releasing the connection between the attachment rod and the second hoist;
the first hoisting block hoists the attachment rod to move to a position closest to a lifting hook of the tower crane, and then the attachment rod is connected to the lifting hook;
the attachment rod is hoisted and pulled through the lifting hook, and when a steel wire rope of the first hoisting block is loosened, the connection between the first hoisting block and the attachment rod is released;
the lifting hook continues to lift the attaching rod and hoist the attaching rod to the ground.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010095255.6A CN113264458A (en) | 2020-02-15 | 2020-02-15 | Tower crane system and method for removing attachment rod thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010095255.6A CN113264458A (en) | 2020-02-15 | 2020-02-15 | Tower crane system and method for removing attachment rod thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113264458A true CN113264458A (en) | 2021-08-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010095255.6A Pending CN113264458A (en) | 2020-02-15 | 2020-02-15 | Tower crane system and method for removing attachment rod thereof |
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| Country | Link |
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| CN (1) | CN113264458A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114031002A (en) * | 2021-11-03 | 2022-02-11 | 上海建工七建集团有限公司 | Tower crane wall-attached connecting piece dismounting device and method |
| CN116692699A (en) * | 2023-08-07 | 2023-09-05 | 山东启明风电有限公司 | Fastening assembly for fastening a tower to a wind turbine tower |
-
2020
- 2020-02-15 CN CN202010095255.6A patent/CN113264458A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114031002A (en) * | 2021-11-03 | 2022-02-11 | 上海建工七建集团有限公司 | Tower crane wall-attached connecting piece dismounting device and method |
| CN116692699A (en) * | 2023-08-07 | 2023-09-05 | 山东启明风电有限公司 | Fastening assembly for fastening a tower to a wind turbine tower |
| CN116692699B (en) * | 2023-08-07 | 2023-10-13 | 山东启明风电有限公司 | Fastening assembly for fastening a tower to a wind turbine tower |
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