Special hoisting mechanism for attaching and detaching large tower crane

Abstract

The utility model provides a special hoisting mechanism for attachment and detachment of a large tower crane, which integrates a hydraulic cylinder, a suspender, a hydraulic winch, an upper rotating shaft, a lower rotating shaft and two groups of hoop components, and is specially designed for solving the problems of space limitation and operation in the attachment and detachment process of the large tower crane. The upper rotating shaft and the lower rotating shaft have the free rotating capacity, the angle can be flexibly adjusted, the attachment and detachment requirements in different directions are met, and the operation efficiency is remarkably improved. The hoop assembly is tightly attached to the tower crane sleeve frame stand column, and the structural stability is ensured. The hydraulic winch and the hydraulic cylinder are powered by a hydraulic pump station of the tower crane, and energy conservation and environmental protection are achieved. The hoisting mechanism can be flexibly mounted right above a tower crane attachment, is suitable for tower cranes of various models, has the advantages of high universality, simplicity and convenience in operation, safety, reliability and the like, effectively solves the problem that part of attachment rods of a large tower crane are difficult to detach, improves the working efficiency, reduces the safety risk, and has wide market application prospects.

Description

Technical Field

[0001] The utility model relates to the technical field of construction machinery, specifically a special lifting mechanism for attaching and disassembling a large tower crane, and aims to provide a disassembly solution with a reasonable structure, convenient operation, safety and high efficiency, so as to cope with the operation limitations and efficiency problems faced by the tower crane during attachment and disassembly. Background Art

[0002] Large tower cranes are critical equipment in high-rise building construction, and their stability and safety are crucial. Tower cranes are connected to the main structure of the building via attachments to enhance their ability to resist overturning. However, during the crane dismantling process, particularly the attachments, space constraints and the crane's inherent operational limitations often make some attachment rods difficult to remove. This not only impacts project progress but also increases safety risks.

[0003] Patent application number CN201820572254.4 proposes a quick disassembly device for a large internal climbing tower crane, comprising: a lifting boom; an A-frame connected to the lifting boom; a luffing power mechanism connected to the end point of the lifting boom via a lifting wire rope, the lifting wire rope being supported by the A-frame and then connected to the luffing power mechanism; a sleeve frame connected to the lifting boom and the A-frame, and the entire disassembly device is installed on the internal climbing tower crane. The quick disassembly device for a large internal climbing tower crane proposed by this utility model can complete the disassembly of a large tower crane with a single installation, and after the large tower crane is dismantled, it can disassemble itself and be transported to the ground by manual labor, which will greatly reduce the cost and risk of dismantling a large tower crane.

[0004] However, the above patented technology equipment is bulky, the installation and disassembly process is complicated and tedious, and the direction of the boom cannot be adjusted, which cannot meet the lifting needs in actual working conditions. Utility Model Content

[0005] The purpose of this utility model is to provide a special lifting mechanism for attaching and disassembling a large tower crane to solve the problems raised in the above background technology:

[0006] (1) How to solve the dilemma of the inability to dismantle some of the attachment rods of large tower cranes, improve work efficiency and reduce safety risks.

[0007] To achieve the above objectives, the present invention provides the following technical solutions:

[0008] A special lifting mechanism for attachment and disassembly of a large tower crane;

[0009] It includes a hydraulic cylinder, a boom, a hydraulic winch, an upper rotating shaft, a lower rotating shaft and two sets of clamp assemblies;

[0010] The clamp assembly includes a first clamp and a second clamp, the first clamp having a first half groove that fits the side wall of the tower crane frame column, the second clamp also having a second half groove that fits the side wall of the tower crane frame column, and the upper and lower parts of the side wall of the second clamp away from the second assembly groove respectively extend hinged plates outward, and the two hinged plates are provided with coaxial rotating holes; the first clamp and the second clamp are respectively located on both sides of the tower crane frame column, the first clamp and the second clamp are detachably connected, and the first half groove of the first clamp and the second half groove of the second clamp form a shape that fits the outer contour of the tower crane frame column;

[0011] The upper rotating shaft and the lower rotating shaft correspond to the two sets of clamping hoop assemblies one by one respectively, and the upper rotating shaft includes an upper rotating tube body, a pulley mounting seat and a lifting hinge seat. The upper rotating tube body extends into the rotating hole of the hinge plate of the corresponding clamping hoop assembly, and the upper rotating tube body can rotate freely relative to the hinge plate. The pulley mounting seat is fixedly connected to the upper side of the upper rotating tube body, and the pulley mounting seat is equipped with a pulley. The lifting hinge seat is fixedly connected to the side wall of the upper rotating tube body. The lifting hinge seat is hinged to the proximal end of the boom through a pin shaft. The distal end of the boom extends away from the tower crane sleeve, and the distal end of the boom is also equipped with a pulley.

[0012] The lower rotating shaft includes a lower rotating tube body and a cylinder body hinge seat. The lower rotating tube body extends into the rotating hole of the hinge plate of the corresponding clamp assembly. The lower rotating tube body can rotate freely relative to the hinge plate. The cylinder body hinge seat is fixedly connected to the side wall of the lower rotating tube body. The lifting hinge seat is hinged to the cylinder body of the hydraulic cylinder through a pin shaft. The end of the piston rod of the hydraulic cylinder is hinged to the middle part of the boom.

[0013] The hydraulic winch is detachably connected to the tower crane sleeve frame column, and the steel wire rope of the hydraulic winch is successively passed around the pulley on the upper rotating shaft pulley mounting seat and the pulley at the far end of the boom and then fixedly connected to the hook.

[0014] On the basis of the above technical solution, the present invention can also be improved as follows.

[0015] Furthermore, the first clamp of the clamp assembly is provided with first flange portions on both sides of the first half groove, and the second clamp is provided with second flange portions on both sides of the second half groove.

[0016] Furthermore, the first clamp and the second clamp of the clamp assembly are detachably connected by bolts.

[0017] Furthermore, first limiting protrusions are respectively extended outwardly from the upper and lower end edges of the upper rotating tube of the upper rotating shaft, and the outer diameter of the first limiting protrusion is larger than the diameter of the rotating hole of the hinge plate of the clamp assembly.

[0018] Furthermore, second limiting protrusions are respectively extended outwardly from the upper and lower end edges of the lower rotating tube body of the lower rotating shaft, and the outer diameter of the second limiting protrusion is larger than the diameter of the rotating hole of the hinge plate of the clamp assembly.

[0019] Furthermore, the steel wire rope of the hydraulic winch sequentially passes through the lower rotating tube of the lower rotating shaft, the upper rotating tube of the upper rotating shaft, and passes around the pulley on the upper rotating shaft pulley mounting seat and the pulley at the far end of the boom and is fixedly connected to the hook.

[0020] After adopting such a structure, this special lifting mechanism for attachment and disassembly of large tower cranes, through innovative design, places special emphasis on the flexibility and free rotation ability of the structure, effectively solves the technical difficulties in the process of attachment and disassembly of large tower cranes, improves work efficiency, reduces safety risks, and has significant social and economic benefits and promotion value.

[0021] The beneficial effects of this large tower crane attachment and disassembly special lifting mechanism are:

[0022] (1) Improved operating efficiency: The utility model solves the operational difficulties caused by space limitations when disassembling and attaching a tower crane through a dedicated lifting mechanism, thereby significantly improving disassembly efficiency.

[0023] (2) Enhanced safety: The clamp assembly is designed to be stable, and the upper and lower shafts and the boom system have reasonable structures, which ensures stability and safety during the disassembly process and reduces the risk of accidents.

[0024] (3) Strong adaptability: The lifting mechanism can be flexibly installed directly above the tower crane. It is suitable for tower cranes of different models and specifications and has strong versatility and practicality.

[0025] (4) Energy saving and environmental protection: The tower crane's own hydraulic pump station is used as the power source, eliminating the need for additional power equipment, reducing energy consumption and environmental pollution. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a diagram showing the usage status of an embodiment of a special lifting mechanism for attachment and disassembly of a large tower crane.

[0027] Figure 2 It is a three-dimensional diagram of the second holding hoop and the upper rotating shaft in the embodiment of the special lifting mechanism for attachment and disassembly of a large tower crane.

[0028] Figure 3 It is a three-dimensional diagram of the second holding hoop and the lower rotating shaft in the embodiment of the special lifting mechanism for attachment and disassembly of a large tower crane.

[0029] Figure 4 It is a three-dimensional diagram of the upper rotating shaft in the embodiment of the special lifting mechanism for attachment and disassembly of a large tower crane.

[0030] Figure 5 It is a three-dimensional diagram of the lower rotating shaft in the embodiment of the special lifting mechanism for attachment and disassembly of a large tower crane.

[0031] Figure 6 It is a three-dimensional diagram of the second hoist in the embodiment of the special lifting mechanism for attachment and disassembly of a large tower crane.

[0032] Figure 7 It is a three-dimensional diagram of the first hoist in the embodiment of the special lifting mechanism for attachment and disassembly of a large tower crane.

[0033] Description of the numbers in the figure:

[0034] Clamp assembly-1000; first clamp-1100; first half groove-1110; first flange-1120; second clamp-1200; second half groove-1210; second flange-1220; hinge plate-1230; rotating hole-1231; upper rotating shaft-2000; upper rotating tube-2100; pulley mounting seat-2200; lifting hinge seat-2300; first limiting convex ring-2110; boom-3000; lower rotating shaft-4000; lower rotating tube-4100; second limiting convex ring-4110; cylinder hinge seat-4200; hydraulic winch-5000; wire rope-5100; pulley-5110; hook-5200; hydraulic cylinder-6000; tower crane-7000; column-7100. DETAILED DESCRIPTION

[0035] To make the above-mentioned objects, features, and advantages of the present invention more clearly understood, the following detailed description of specific embodiments of the present invention is provided in conjunction with the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways than those described herein, and those skilled in the art may make similar modifications without violating the scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0036] The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only implementations.

[0037] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this invention pertains. The terms used herein in the specification of this invention are intended only to describe specific embodiments and are not intended to limit the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0038] See also Figures 1 to 7 .

[0039] The special lifting mechanism for attachment and disassembly of a large tower crane includes a hydraulic cylinder 6000, a boom 3000, a hydraulic winch 5000, an upper rotating shaft 2000, a lower rotating shaft 4000 and two sets of hoop assemblies 1000.

[0040] The clamp assembly 1000 includes a first clamp 1100 and a second clamp 1200. The first clamp 1100 has a first half groove 1110 that fits the side wall of the tower crane 7000 frame column 7100. The first clamp 1100 of the clamp assembly 1000 has first flanges 1120 on both sides of the first half groove 1110.

[0041] The second clamping hoop 1200 also has a second half groove 1210 that fits into the side wall of the tower crane 7000 frame column 7100. The second clamping hoop 1200 has second flanges 1220 on both sides of the second half groove 1210. Hinged plates 1230 extend outward from the upper and lower portions of the side wall of the second clamping hoop 1200 away from the second assembly groove. The two hinged plates 1230 have coaxial rotation holes 1231.

[0042] The first clamp 1100 and the second clamp 1200 are respectively located on both sides of the tower crane 7000 frame column 7100, and the first clamp 1100 and the second clamp 1200 of the clamp assembly 1000 are detachably connected by bolts, and the first half groove 1110 of the first clamp 1100 and the second half groove 1210 of the second clamp 1200 form a shape that fits the outer contour of the tower crane 7000 frame column 7100.

[0043] The upper rotating shaft 2000 and the lower rotating shaft 4000 correspond to the two sets of clamping hoop assemblies 1000 respectively. The upper rotating shaft 2000 includes an upper rotating tube body 2100, a pulley mounting seat 2200 and a lifting hinge seat 2300. The upper rotating tube body 2100 extends into the rotating hole 1231 of the hinge plate 1230 of the corresponding clamping hoop assembly 1000. The upper rotating tube body 2100 can rotate freely relative to the hinge plate 1230. The upper and lower end edges of the upper rotating tube body 2100 of the upper rotating shaft 2000 are respectively extended outward with a first limiting convex ring 2110. The first The outer diameter of the limiting protrusion ring 2110 is larger than the aperture of the rotating hole 1231 of the hinge plate 1230 of the clamp assembly 1000, the pulley mounting seat 2200 is fixedly connected to the upper side of the upper rotating tube body 2100, the pulley mounting seat 2200 is installed with a pulley 5110, the lifting hinge seat 2300 is fixedly connected to the side wall of the upper rotating tube body 2100, the lifting hinge seat 2300 and the proximal end of the boom 3000 are hinged through a pin shaft, the distal end of the boom 3000 extends away from the tower crane 7000 sleeve, and the distal end of the boom 3000 is also installed with a pulley 5110.

[0044] The lower rotating shaft 4000 includes a lower rotating tube body 4100 and a cylinder articulated seat 4200. The lower rotating tube body 4100 extends into the rotating hole 1231 of the hinge plate 1230 of the corresponding clamp assembly 1000. The lower rotating tube body 4100 can rotate freely relative to the hinge plate 1230. The upper and lower end edges of the lower rotating tube body 4100 of the lower rotating shaft 4000 are respectively extended outward with second limiting protrusions 4110. The outer diameter of the second limiting protrusion 4110 is larger than the aperture of the rotating hole 1231 of the hinge plate 1230 of the clamp assembly 1000. The cylinder articulated seat 4200 is fixedly connected to the side wall of the lower rotating tube body 4100. The lifting articulated seat 2300 is hinged to the cylinder body of the hydraulic cylinder 6000 through a pin shaft, and the piston rod end of the hydraulic cylinder 6000 is hinged to the middle part of the boom 3000.

[0045] The upper and lower shafts 2000 and 4000 are connected to the hinge plate 1230 of the clamp assembly 1000 through rotation holes 1231, enabling free rotation within a range of approximately 150°. This allows the lifting mechanism to flexibly adjust its angle to accommodate attachment and removal requirements in various directions. Both the upper and lower shafts 4000 are designed with limit rings to prevent them from dislodging from the rotation holes 1231 of the hinge plate 1230, ensuring structural safety.

[0046] The hydraulic winch 5000 is detachably connected to the frame column 7100 of the tower crane 7000. The steel wire rope 5100 of the hydraulic winch 5000 passes through the lower rotating tube body 4100 of the lower rotating shaft 4000, the upper rotating tube body 2100 of the upper rotating shaft 2000 in sequence, and passes around the pulley 5110 on the pulley mounting seat 2200 of the upper rotating shaft 2000 and the pulley 5110 at the far end of the boom 3000, and is fixedly connected to the hook 5200.

[0047] The hydraulic cylinder 6000 and hydraulic winch 5000 of the special lifting mechanism for attachment and disassembly of this large tower crane are powered by the hydraulic pump station of the tower crane 7000 to carry out the lifting operation.

[0048] Since the tower crane 7000 has already been lowered to its standard section when it was being dismantled, it cannot be fully rotated. The attachment at the rear of the boom cannot be dismantled using the tower crane 7000. By using this large tower crane attachment and dismantling special lifting mechanism installed just above the attachment, the attachment dismantling work can be carried out safely and conveniently.

[0049] The above is only one embodiment of the present invention. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the principles of the present invention, and these should also be regarded as falling within the scope of protection of the present invention.

Claims

1. A special lifting mechanism for attaching and disassembling a large tower crane, characterized by: It comprises a hydraulic cylinder (6000), a boom (3000), a hydraulic winch (5000), an upper rotating shaft (2000), a lower rotating shaft (4000) and two sets of hoop assemblies (1000); The clamp assembly (1000) includes a first clamp (1100) and a second clamp (1200). The first clamp (1100) is provided with a first half groove (1110) that fits the side wall of the tower crane (7000) frame column (7100). The second clamp (1200) is also provided with a second half groove (1210) that fits the side wall of the tower crane (7000) frame column (7100). The upper and lower parts of the side wall of the second clamp (1200) away from the second assembly groove respectively extend outwards with hinged plates (1230). The two hinged plates (1230) are provided with coaxial rotating holes (1231); the first hoop (1100) and the second hoop (1200) are respectively located on both sides of the tower crane (7000) frame column (7100); the first hoop (1100) and the second hoop (1200) are detachably connected; the first half groove (1110) of the first hoop (1100) and the second half groove (1210) of the second hoop (1200) form a shape that fits the outer contour of the tower crane (7000) frame column (7100); The upper rotating shaft (2000) and the lower rotating shaft (4000) correspond to the two sets of hoop assemblies (1000) respectively. The upper rotating shaft (2000) includes an upper rotating tube (2100), a pulley mounting seat (2200) and a lifting hinge seat (2300). The upper rotating tube (2100) extends into the rotating hole (1231) of the hinge plate (1230) of the corresponding hoop assembly (1000). The upper rotating tube (2100) can rotate freely relative to the hinge plate (1230). The pulley mounting seat (2200) is fixedly connected to the upper side of the upper rotating tube body (2100), and the pulley mounting seat (2200) is installed with a pulley (5110). The lifting hinge seat (2300) is fixedly connected to the side wall of the upper rotating tube body (2100). The lifting hinge seat (2300) is hinged to the proximal end of the boom (3000) through a pin shaft. The distal end of the boom (3000) extends away from the tower crane (7000) sleeve. The distal end of the boom (3000) is also installed with a pulley (5110). The lower rotating shaft (4000) includes a lower rotating tube body (4100) and a cylinder body hinge seat (4200). The lower rotating tube body (4100) extends into the rotating hole (1231) of the hinge plate (1230) of the corresponding hoop assembly (1000). The lower rotating tube body (4100) can rotate freely relative to the hinge plate (1230). The cylinder body hinge seat (4200) is fixedly connected to the side wall of the lower rotating tube body (4100). The lifting hinge seat (2300) and the cylinder body of the hydraulic cylinder (6000) are hinged via a pin shaft. The end of the piston rod of the hydraulic cylinder (6000) is hinged to the middle part of the suspension rod (3000). The hydraulic winch (5000) is detachably connected to the tower crane (7000) sleeve column (7100), and the wire rope (5100) of the hydraulic winch (5000) is passed through the pulley (5110) on the pulley mounting seat (2200) of the upper rotating shaft (2000) and the pulley (5110) at the far end of the boom (3000) and is fixedly connected to the hook (5200).

2. The special lifting mechanism for attachment and disassembly of a large tower crane according to claim 1 is characterized by: The first clamp (1100) of the clamp assembly (1000) is provided with first flanges (1120) on both sides of the first half groove (1110), and the second clamp (1200) is provided with second flanges (1220) on both sides of the second half groove (1210).

3. The special lifting mechanism for attachment and disassembly of a large tower crane according to claim 2 is characterized by: The first clamp (1100) and the second clamp (1200) of the clamp assembly (1000) are detachably connected via bolts.

4. The special lifting mechanism for attachment and disassembly of a large tower crane according to claim 1 is characterized by: The upper and lower end edges of the upper rotating tube body (2100) of the upper rotating shaft (2000) are respectively extended outward with first limiting protrusions (2110), and the outer diameter of the first limiting protrusions (2110) is larger than the aperture of the rotating hole (1231) of the hinge plate (1230) of the clamp assembly (1000).

5. The special lifting mechanism for attachment and disassembly of a large tower crane according to claim 1 is characterized by: The upper and lower end edges of the lower rotating tube body (4100) of the lower rotating shaft (4000) are respectively extended outward with second limiting protrusions (4110), and the outer diameter of the second limiting protrusions (4110) is larger than the aperture of the rotating hole (1231) of the hinge plate (1230) of the clamp assembly (1000).

6. The special lifting mechanism for attachment and disassembly of a large tower crane according to claim 1 is characterized by: The steel wire rope (5100) of the hydraulic winch (5000) sequentially passes through the lower rotating tube (4100) of the lower rotating shaft (4000), the upper rotating tube (2100) of the upper rotating shaft (2000), and passes around the pulley (5110) on the pulley mounting seat (2200) of the upper rotating shaft (2000), the pulley (5110) at the far end of the boom (3000), and is fixedly connected to the hook (5200).

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