Self-mounting and self-dismounting structure of tower crane counterweight

Abstract

The utility model discloses a tower crane counterweight self-mounting and self-dismounting structure which comprises a hoisting mechanism, a rope arranging device, a counterweight hoisting auxiliary frame and a steel wire rope, and the hoisting mechanism is mounted on a tower crane; the rope arranging device comprises a first pulley, and the first pulley is installed on the tower crane. The counterweight hoisting auxiliary frame is movably arranged on the tower crane, and a guide pulley block is arranged on the counterweight hoisting auxiliary frame; one end of the steel wire rope is installed on the hoisting mechanism, and the other end of the steel wire rope sequentially passes through the first pulley and the guide pulley block and then is connected with a balancing weight. The hoisting mechanism of the tower crane is used as hoisting equipment, the hoisting steel wire rope of the tower crane is connected with the counter weight through the rope arranging device and the guide wheel group of the counter weight hoisting auxiliary frame, the hoisting mechanism is operated to ascend and descend to mount and dismount the counter weight, and the counter weight is mounted and dismounted by utilizing the device of the tower crane. And the balancing weight can be quickly and safely mounted and dismounted under the condition that external auxiliary equipment is not needed.

Description

Technical Field

[0001] The utility model relates to the technical field of tower crane disassembly and assembly, and more specifically, to a structure for self-installing and self-dismantling the counterweight of a tower crane. Background Art

[0002] The tower crane, abbreviated as tower crane, as an important part of heavy machinery and equipment, is widely used in many fields such as construction, bridges, ports, mines, etc. for hoisting, transporting and installing heavy objects. In the installation, disassembly and daily operation of tower cranes (tower cranes), the crane plays a crucial role.

[0003] During the use of the tower crane, with the change of the construction environment and the adjustment of the on-site construction progress, if the tower crane needs to perform operations such as arm cutting, arm connection or disassembly, it is first necessary to consider whether the counterweight is convenient for installation and disassembly.

[0004] The counterweight of the tower crane is generally made of cast iron or reinforced concrete and is placed at the tail of the balance arm to maintain the moment balance when the tower crane is working. Currently, for the installation and disassembly of tower cranes, the most common method is to use lifting equipment such as truck cranes to lift each structural part of the tower crane step by step, and then complete the assembly or disassembly of the whole tower crane.

[0005] The traditional installation and disassembly of the tower crane counterweight also uses lifting equipment such as truck cranes for hoisting. However, due to the possible situation that the hoisting equipment cannot be erected due to limited site during the main construction process or the required hoisting equipment model is too large, it is difficult to complete the hoisting of the counterweight. Summary of the Utility Model

[0006] In order to overcome the problem that the existing installation and disassembly of the tower crane counterweight uses lifting equipment such as truck cranes for hoisting, but due to limited site during the main construction process, the hoisting equipment cannot be erected or the hoisting equipment model is too large, it is difficult to complete the hoisting of the counterweight, the utility model provides a structure for self-installing and self-dismantling the counterweight of a tower crane.

[0007] The technical solution of the utility model is as follows:

[0008] A structure for self-installing and self-dismantling the counterweight of a tower crane, comprising:

[0009] A hoisting mechanism, the hoisting mechanism is installed on the tower crane;

[0010] A rope arranging device, the rope arranging device includes a first pulley, and the first pulley is installed on the tower crane;

[0011] A counterweight hoisting auxiliary frame, the counterweight hoisting auxiliary frame is movably arranged on the tower crane, and a guiding pulley group is arranged on the counterweight hoisting auxiliary frame;

[0012] A wire rope, one end of the wire rope is installed on the hoisting mechanism, and the other end of the wire rope is connected to a counterweight block after passing through the first pulley and the guiding pulley group in sequence.

[0013] For the present utility model according to the above solution, the rope arranging device further includes a lifting capacity limiter, and the lifting capacity limiter is connected to the first pulley.

[0014] For the present utility model according to the above solution, the first pulley is installed on the tower crane through a mounting bracket.

[0015] For the present utility model according to the above solution, the height of the first pulley is greater than the height of the hoisting mechanism.

[0016] For the present utility model according to the above solution, the counterweight hoisting auxiliary frame includes a vertical support rod and a horizontal connecting member, and the vertical support rod and the horizontal connecting member enclose a cuboid-shaped space structure by means of permutation and combination.

[0017] For the present utility model according to the above solution, the guiding pulley group includes a channel steel and a second pulley, the channel steel is installed on the counterweight hoisting auxiliary frame, and the second pulley is installed on the channel steel.

[0018] For the present utility model according to the above solution, the height of the second pulley is less than the height of the first pulley.

[0019] For the present utility model according to the above solution, retractable moving wheels are provided at the bottom of the counterweight hoisting auxiliary frame, slide rails are provided at the corresponding positions of the tower crane, and the moving wheels move along the slide rails.

[0020] For the present utility model according to the above solution, the counterweight hoisting auxiliary frame is connected to the tower crane by bolts.

[0021] For the present utility model according to the above solution, wire clips are provided at the end of the wire rope, the wire clips are connected to a hook, and the hook is connected to the lug of the counterweight block.

[0022] For the present utility model according to the above solution, the beneficial effects are as follows: the present utility model uses the hoisting mechanism of the tower crane as a hoisting device, and the hoisting wire rope of the tower crane is connected to the counterweight through the rope arranging device and the guiding pulley group of the counterweight hoisting auxiliary frame, and the hoisting mechanism is operated to hoist and lower to install and remove the counterweight block. The counterweight block is installed and removed by using the self-device of the tower crane, realizing the rapid and safe installation and removal of the counterweight block without external auxiliary equipment.

[0023] The counterweight hoisting auxiliary frame is movably arranged on the tower crane. The guiding pulley block on the counterweight hoisting auxiliary frame moves along with the movement of the counterweight hoisting auxiliary frame. The guiding pulley block can move directly above the counterweight, thereby reducing the sway of the counterweight during the movement and ensuring the stability of the counterweight hoisting process. Description of the Drawings

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0025] Figure 1 It is a schematic structural diagram of the present invention;

[0026] Figure 2 It is a front view of the counterweight hoisting auxiliary frame of the present invention;

[0027] Figure 3 It is a right view of the counterweight hoisting auxiliary frame of the present invention;

[0028] Figure 4 It is a top view of the counterweight hoisting auxiliary frame of the present invention.

[0029] In the figures, the reference numerals are as follows:

[0030] 1, hoisting mechanism; 21, first pulley; 22, mounting bracket; 3, counterweight hoisting auxiliary frame; 31, guiding pulley block; 311, channel steel; 312, second pulley; 32, vertical support rod; 33, transverse connecting member; 34, load-bearing member; 4, steel wire rope; 5, counterweight; 6, tower crane. Detailed Embodiments

[0031] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the following further details the present invention in conjunction with the drawings and embodiments.

[0032] It should be noted that the terms "including" and "having" and any variations thereof in the description and claims of the present utility model are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but optionally further includes steps or units not listed, or optionally further includes other steps or units inherent to these processes, methods, products or devices. Terms such as "arranged" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and can be the communication inside two components or the interaction relationship between two components, unless otherwise clearly defined. The orientations or positions indicated by terms such as "upper", "lower", "left", "right", "front", "rear", "bottom" are based on the orientations or positions shown in the drawings, and are only for convenience of description and should not be construed as a limitation to the technical solution of the present application.

[0033] It should be noted that for the installation and disassembly of the counterweight of traditional tower cranes, lifting equipment such as truck cranes is also used for hoisting. However, due to possible site limitations during the main construction process, the hoisting equipment cannot be erected or the required hoisting equipment model is too large, it is difficult to complete the hoisting of the counterweight.

[0034] As Figures 1 - 4 shown, this embodiment provides a structure for self-installation and self-disassembly of the tower crane counterweight. Using the hoisting mechanism 1 of the tower crane 6 as the hoisting equipment, the hoisting wire rope 4 of the tower crane 6 is connected to the counterweight through the wire rope arranging device and the guiding pulley group of the counterweight hoisting auxiliary frame 3, and the hoisting mechanism 1 is operated to hoist and lower for the installation and disassembly of the counterweight block 5. By using the self-device of the tower crane 6 to install and disassemble the counterweight block 5, the counterweight block 5 can be quickly and safely installed and disassembled without external auxiliary equipment.

[0035] The counterweight hoisting auxiliary frame 3 is movably arranged on the tower crane 6, and the guiding pulley group 31 on the counterweight hoisting auxiliary frame 3 moves along with the movement of the counterweight hoisting auxiliary frame 3. The guiding pulley group 31 can move to directly above the counterweight block 5, thereby reducing the sway of the counterweight block 5 during movement and ensuring the stability of the counterweight block 5 during hoisting.

[0036] Specifically, it includes a hoisting mechanism 1, a wire rope arranging device, a counterweight hoisting auxiliary frame 3 and a wire rope 4. The hoisting mechanism 1 is installed on the tower crane 6; the wire rope arranging device includes a first pulley 21, and the first pulley 21 is installed on the tower crane 6; the counterweight hoisting auxiliary frame 3 is movably arranged on the tower crane 6, and a guiding pulley group 31 is provided on the counterweight hoisting auxiliary frame 3; one end of the wire rope 4 is installed on the hoisting mechanism 1, and the other end of the wire rope 4 is connected to the counterweight block 5 after passing through the first pulley 21 and the guiding pulley group 31 in sequence.

[0037] In actual operation, the staff only needs to control the hoisting mechanism 1 to install and disassemble the counterweight 5. When installing the counterweight 5, place the counterweight 5 in a suitable position, then connect the steel wire rope 4 to the counterweight 5 through the hoisting mechanism 1, and start the hoisting mechanism 1 to lift the counterweight 5 to the designated position. When disassembling the counterweight 5, only need to operate the hoisting mechanism 1 in reverse to relax the steel wire rope 4, and the counterweight 5 can descend and detach from the tower crane 6.

[0038] The structure of the tower crane 6 with self-installing and self-disassembling counterweight not only improves work efficiency, reduces operation difficulty, but also reduces dependence on external equipment and lowers costs.

[0039] In one embodiment, the rope arranging device further includes a load limiter, which is connected to the first pulley 21. The load limiter is a safety device that is directly connected to the first pulley 21 or connected through other transmission mechanisms, and is used to monitor in real time the tension borne by the steel wire rope 4 passing through the first pulley 21. When the tension exceeds the preset safety value, the load limiter will immediately send an alarm signal and even automatically cut off the power supply to prevent safety accidents caused by overload.

[0040] In one embodiment, the first pulley 21 is installed on the tower crane 6 through a mounting bracket 22. The mounting bracket 22 is firm and stable, and can withstand various forces and torques generated by the first pulley 21 and the steel wire rope 4. The installation method of the mounting bracket 22 is customized according to the specific structure and size of the tower crane 6 to ensure that the first pulley 21 can be stably installed on the tower crane 6.

[0041] Preferably, the height of the first pulley 21 is greater than the height of the hoisting mechanism 1. The purpose of this setting is, firstly, to ensure that there is enough space for the steel wire rope 4 to bend and stretch when passing around the first pulley 21, reducing the wear of the steel wire rope 4 caused by too small a bending radius; secondly, to increase the overall height of the rope arranging device, so that the steel wire rope 4 can be kept away from the tower crane 6 and the obstacles on the tower crane 6 during the lifting and lowering process, reducing the risk of accidental collision; thirdly, to form a certain distance between the rope arranging device and the hoisting mechanism 1, which is beneficial to the neat arrangement of the steel wire rope 4 and prevents entanglement.

[0042] In one embodiment, the counterweight lifting auxiliary frame 3 includes a vertical support rod 32 and a transverse connecting piece 33, and the vertical support rod 32 and the transverse connecting piece 33 enclose a cuboid-shaped space structure by means of permutation and combination.

[0043] When constructing the cuboid frame, set the length, width, and height of the rectangular frame according to the dimensions of the tower crane 6 and the counterweight 5. The vertical support rod 32 uses square steel pipe as the main body, and a steel plate sealing plate is welded on the top of the square steel pipe to increase its bearing capacity and stability. The horizontal connecting piece 33 uses square steel pipe as the main body to connect and reinforce the vertical support rod 32, and the whole frame forms a solid whole, which can bear a large lifting force. Install two steel beams made by buckling two channel steels 311 on the top surface of the frame. The steel beam serves as the main load-bearing member 34 of the counterweight lifting auxiliary frame 3 and bears the weight of the whole counterweight 5. Finally, weld two connecting plates on the load-bearing member 34 for welding and fixing the guide pulley set 31 in the slot of the channel steel 311.

[0044] In one embodiment, the guide pulley set 31 includes a channel steel 311 and a second pulley 312. The channel steel 311 is installed on the counterweight lifting auxiliary frame 3 and plays a role in fixing and supporting the second pulley 312. The second pulley 312 is installed on the channel steel 311 and is used to guide the direction of the steel wire rope 4 to ensure that the counterweight 5 can be lifted and lowered smoothly.

[0045] In one embodiment, the height of the second pulley 312 is less than the height of the first pulley 21. The purpose of this setting is that during the lifting process, the steel wire rope 4 can maintain a certain tension to prevent accidents caused by slack.

[0046] In one embodiment, the bottom of the counterweight lifting auxiliary frame 3 is provided with retractable moving wheels, and corresponding sliding rails are provided at the corresponding positions of the tower crane 6. The moving wheels move along the sliding rails. When the counterweight lifting auxiliary frame 3 needs to move, the moving wheels at the bottom of the counterweight lifting auxiliary frame 3 extend and slide along the preset sliding rails on the tower crane 6; when it moves to the required position, the moving wheels retract, and the counterweight lifting auxiliary frame 3 is installed on the tower crane 6. The sliding rails are made of high-strength and wear-resistant materials to ensure the stability and reliability during the moving process.

[0047] The telescopic mechanism of the moving wheels can be realized by electric, pneumatic or manual means. In the electric or pneumatic mode, by controlling the expansion and contraction of the motor or cylinder, the extension and contraction of the moving wheels are driven. In the manual mode, the extension and contraction of the moving wheels can be controlled by an operating rod or a handle.

[0048] In one embodiment, the counterweight lifting auxiliary frame 3 and the tower crane 6 are connected by bolts to ensure firm connection and easy disassembly. Corresponding connection holes and positioning grooves are respectively provided on the counterweight lifting auxiliary frame 3 and the tower crane 6 to ensure the accuracy and stability of the connection.

[0049] In one embodiment, a rope clip is provided at the end of the steel wire rope 4, and the rope clip is connected to the hook, and the hook is connected to the lifting lug of the counterweight 5. The rope clip is made of high-strength, corrosion-resistant materials and has undergone strict quality inspection to ensure its load-bearing capacity and service life. The lifting lug is a structural member preset on the counterweight 5 for lifting, and matches the shape and size of the hook.

[0050] It should be understood that those skilled in the art can make improvements or changes based on the above description, and all these improvements and changes should fall within the scope of protection of the claims attached to the utility model.

[0051] The above is an exemplary description of the utility model patent in conjunction with the accompanying drawings. It is obvious that the implementation of the utility model patent is not limited to the above-mentioned method. As long as various improvements are made by adopting the method concept and technical solution of the utility model patent, or the concept and technical solution of the utility model patent are directly applied to other occasions without improvement, they are all within the protection scope of the utility model.

Claims

1. A structure for self-installation and self-disassembly of the counterweight of a tower crane, characterized in that, Comprising: A hoisting mechanism, which is installed on the tower crane; A rope arranging device, which includes a first pulley installed on the tower crane; A counterweight hoisting auxiliary frame, which is movably arranged on the tower crane and is provided with a guiding pulley group thereon; A steel wire rope, one end of which is installed on the hoisting mechanism, and the other end of which is connected to a counterweight block after passing through the first pulley and the guiding pulley group in sequence.

2. The structure of a tower crane counterweight for self-installation and self-disassembly according to claim 1, characterized in that, The rope arranging device further includes a lifting weight limiter, which is connected to the first pulley.

3. A structure for self-installing and self-dismantling the counterweight of a tower crane according to claim 1 or 2, characterized in that, The first pulley is installed on the tower crane through a mounting bracket.

4. The structure of a tower crane counterweight for self-installation and self-disassembly according to claim 3, characterized in that, The height of the first pulley is greater than the height of the hoisting mechanism.

5. A structure for self-installing and self-dismantling the counterweight of a tower crane according to claim 1, 2 or 4, characterized in that, The counterweight hoisting auxiliary frame includes vertical support rods and transverse connectors, and the vertical support rods and transverse connectors enclose a cuboid-shaped space structure in a permutation and combination manner.

6. The structure of a tower crane counterweight for self-installation and self-disassembly according to claim 5, characterized in that, The guiding pulley group includes a channel steel and a second pulley, the channel steel is installed on the counterweight hoisting auxiliary frame, and the second pulley is installed on the channel steel.

7. The structure of a tower crane counterweight for self-installation and self-disassembly according to claim 6, characterized in that, The height of the second pulley is less than the height of the first pulley.

8. A structure for self-installation and self-disassembly of the counterweight of a tower crane according to claim 1, characterized in that, The bottom of the counterweight hoisting auxiliary frame is provided with retractable moving wheels, and corresponding sliding rails are provided on the tower crane, and the moving wheels move along the sliding rails.

9. The structure for self-installation and self-disassembly of the counterweight of a tower crane according to claim 1, characterized in that, The counterweight hoisting auxiliary frame is connected to the tower crane by bolts.

10. The structure for self-installation and self-dismantling of the counterweight of a tower crane according to claim 1, characterized in that, A wire clip is provided at the end of the steel wire rope, the wire clip is connected to a hook, and the hook is connected to the lug of the counterweight block.

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