Wind protection mechanism for a tower crane

Abstract

The utility model provides a tower crane's wind -proof mechanism, including prefabricated base, the prefabricated base upper surface is installed with a plurality of from top to bottom arrangement tower, the adjacent two tower are connected through fastener between, the adjacent two tower are installed with four evenly arranged lifting lugs through connecting piece in the part of contact, the lifting lug is connected with the open body flower basket screw through first steel wire rope, the open body flower basket screw is connected with the center ring through second steel wire rope in the end far away from first steel wire rope, a plurality of vice toroidal rings are set up on the center ring, a plurality of third steel wire ropes are set up on the vice toroidal ring, the third steel wire rope is connected with the prefabricated block for burying in the ground through the horseshoe buckle in the end far away from vice toroidal ring, the utility model has the beneficial effect that improves the wind -proof effect.

Description

Technical Field

[0001] This utility model relates to a windproof mechanism for a tower crane, belonging to the field of tower cranes. Background Technology

[0002] Wind resistance is a critical concern in the construction industry, as strong winds can lead to serious accidents such as crane overturning, boom breakage, and electrical equipment damage. Reinforcing the tower is a key measure to improve its wind resistance. A common practice is to install multiple inclined tie rods between the tower and the prefabricated base. The tensile strength of these tie rods provides additional support moment to the tower, offsetting some of the overturning moment caused by wind loads. However, due to the limited area of ​​the prefabricated base, the connection points between the tie rods and the base are often close to the center of the tower, resulting in a large support angle (over 60° with the horizontal plane). This makes the horizontal component of the wind load on the tie rods relatively small (horizontal component = total tensile force × cosθ, where θ is the angle between the tie rod and the horizontal plane), while the vertical component becomes dominant, failing to effectively suppress horizontal displacement of the tower. Utility Model Content

[0003] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a windproof mechanism for tower cranes to solve the problems mentioned in the background art and improve the windproof effect.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a windproof mechanism for a tower crane, comprising a prefabricated base, on the upper surface of which multiple towers are arranged from top to bottom. Adjacent towers are connected by fasteners, and four evenly arranged lifting lugs are installed at the contact points of adjacent towers via connectors. Each lifting lug is connected to an open-body turnbuckle via a first wire rope. The end of the open-body turnbuckle away from the first wire rope is connected to a central ring via a second wire rope. Multiple secondary rings are fitted on the central ring, and multiple third wire ropes are fitted on the secondary rings. The end of each third wire rope away from the secondary rings is connected to a prefabricated block for burying in the ground via a horseshoe buckle.

[0005] Furthermore, the connector includes a carrier plate, and four carrier plates are evenly provided at the contact points of two adjacent towers. The lifting lugs are connected and fixed to the carrier plates. A U-shaped frame for engaging with the contact points of two adjacent towers is provided on the side of the carrier plate away from the lifting lugs. Connecting lugs are installed at both ends of the U-shaped frame. The two ends of the carrier plate are connected to the two connecting lugs respectively by fasteners formed by multiple sets of bolts and nuts.

[0006] Furthermore, a horizontal plate is provided on the side of the connecting ear away from the carrier plate. The horizontal plate is set inside the tower. The two ends of the horizontal plate are in contact with two opposite inner walls inside the tower. One end of the bolt passes through the carrier plate, the connecting ear and the horizontal plate in sequence and is then threaded to connect to the nut.

[0007] Furthermore, a U-shaped frame is provided on the side of the horizontal plate away from the connecting ear. Both ends of the U-shaped frame are connected and fixed to the horizontal plate. The area of ​​the carrier plate covered by the connecting ear has multiple first small holes. The part of the connecting ear that is in contact with the carrier plate has multiple second small holes that are aligned with the first small holes. The area of ​​the horizontal plate covered by the connecting ear has multiple third small holes. The side of the U-shaped frame facing the third small holes has multiple fourth small holes that are aligned with the third small holes. One end of the bolt passes through the first, second, third, and fourth small holes in sequence. The nut is located on the side of the fourth small hole away from the third small hole.

[0008] Furthermore, the connecting ear and the U-shaped frame are integrally formed, and the connecting ear and the U-shaped frame are arranged perpendicular to each other.

[0009] Furthermore, both ends of the first wire rope are bent to form first loops, and the two first loops on the first wire rope are respectively connected to the lifting lug and the open-body turnbuckle. Both ends of the second wire rope are bent to form second loops, and the two second loops on the second wire rope are respectively connected to the open-body turnbuckle and the center ring.

[0010] Furthermore, both ends of the third wire rope are bent to form third rope loops, and a lifting ring is installed on one side of the precast block. The two third rope loops on the third wire rope are respectively connected to the auxiliary ring and the horseshoe buckle, and the horseshoe buckle is connected to the lifting ring.

[0011] Furthermore, diagonal bracing is installed at each of the four corners of a tower near the prefabricated base, with the end of the diagonal bracing away from the tower connected to the prefabricated base.

[0012] Furthermore, a locking block is rotatably connected to the upper end of the diagonal tie rod, the locking block is fixedly connected to the tower, and a connecting seat is rotatably installed at the end of the diagonal tie rod away from the locking block, the connecting seat is fixedly connected to the prefabricated base.

[0013] Furthermore, the cross-section of the card block is "L" shaped, and multiple positioning posts are evenly installed at the bottom of the connecting seat. Holes are opened in the area of ​​the prefabricated base covered by the connecting seat, and the positioning posts are anchored in the holes.

[0014] The beneficial effects of this utility model are:

[0015] a. Lifting lugs are installed between adjacent towers. These lugs are connected to a central ring via a first wire rope, an open-type turnbuckle, and a second wire rope. The central ring is then connected to underground precast blocks via multiple secondary rings and a third wire rope, forming a three-dimensional support network of "tower-wire rope-ground anchor." This allows the precast blocks to be buried in the ground away from the precast base, reducing the angle between the first wire rope and the horizontal plane to less than 60°. This makes the horizontal force dominant, effectively suppressing horizontal displacement of the tower, improving wind resistance, and eliminating the need for a large precast base, thus reducing costs.

[0016] b. Use open-body turnbuckles to connect the first and second wire ropes, so that after the precast blocks are buried in the ground, the tension of the first and second wire ropes can be easily adjusted using open-body turnbuckles.

[0017] c. When installing the lifting lug at the contact point of two towers, the carrier plate and the connecting lug are connected by fasteners formed by bolts and nuts. Thus, the structure formed by the U-shaped frame, the connecting lug, and the carrier plate is restricted at the contact point of the two towers. At the same time, when installing the bolts and nuts, the bolts and nuts are used to restrict the relative position of the horizontal plate and the connecting lug, thereby reducing the amount of fasteners used. With the horizontal plate in place, the structure formed by the carrier plate and the U-shaped frame is prevented from sliding freely, thus improving the stability of the structure.

[0018] 4. During the installation of bolts and nuts, make sure one end of the bolt passes through the U-shaped frame before tightening the nut. Due to the restriction of the U-shaped frame, the nut will not contact the horizontal plate. Therefore, if the nut and bolt cannot be properly separated during the later disassembly of the tower, the bolt can be cut off using the space between the U-shaped frame and the horizontal plate. Attached Figure Description

[0019] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0020] Figure 1 This is a structural schematic diagram of a windproof mechanism for a tower crane according to the present invention;

[0021] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0022] Figure 3 This is a schematic diagram of the assembly of the lifting lugs, carrier plate, U-shaped frame and cross plate in the windproof mechanism of a tower crane according to this utility model;

[0023] Figure 4 This is a schematic diagram of the assembly of the lifting lugs, U-shaped frame, connecting lugs and carrier plate in the windproof mechanism of a tower crane according to this utility model;

[0024] Figure 5This is a schematic diagram of the assembly of the U-shaped frame and the horizontal plate in the windproof mechanism of a tower crane according to this utility model.

[0025] In the diagram: 1-Precast base, 2-Connecting seat, 3-Diagonal tie rod, 4-Clamping block, 5-Tower, 6-First steel wire rope, 7-Open turnbuckle, 8-Second steel wire rope, 9-Central ring, 10-Secondary ring, 11-Third steel wire rope, 12-Horseshoe buckle, 13-Precast block, 14-Lifting ring, 15-Carrier plate, 16-Lifting lug, 17-Bolt, 18-Connecting lug, 19-Horizontal plate, 20-U-shaped frame, 21-U-shaped frame, 22-Nut. Detailed Implementation

[0026] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0027] Please see Figures 1-4 This utility model provides a technical solution: a windproof mechanism for a tower crane, including a prefabricated base 1. Multiple tower frames 5 arranged from top to bottom are installed on the upper surface of the prefabricated base 1. Adjacent tower frames 5 are connected by fasteners. Four carrier plates 15 are evenly provided at the contact points of adjacent tower frames 5. Lifting lugs 16 are connected and fixed to the carrier plates 15. A U-shaped frame 21 for engaging with the contact points of adjacent tower frames 5 is provided on the side of the carrier plate 15 away from the lifting lugs 16. Connecting lugs 18 are installed at both ends of the U-shaped frame 21. The connecting lugs 18 and the U-shaped frame 21 are integrally formed and arranged perpendicularly to each other, so that the two ends of the carrier plate 15 are connected to the two connecting lugs 18 respectively by fasteners formed by multiple sets of bolts 17 and nuts 22, thus completing the assembly of the lifting lugs 16 and the tower frames 5.

[0028] See Figures 1-5 A horizontal plate 19 is provided on the side of the connecting lug 18 opposite to the carrier plate 15. The horizontal plate 19 is set inside the tower 5, and its two ends contact two opposite inner walls of the tower 5. One end of the bolt 17 passes through the carrier plate 15, the connecting lug 18, and the horizontal plate 19 in sequence and is threaded to the nut 22. When the lifting lug 16 is installed at the contact point of the two towers 5, the carrier plate 15 and the connecting lug 18 are connected by the fastener composed of the bolt 17 and the nut 22, so that the structure formed by the U-shaped frame 21, the connecting lug 18, and the carrier plate 15 is fixed at the contact point of the two towers 5. During the installation of the bolt 17 and the nut 22, the bolt 17 and the nut 22 can limit the relative position of the horizontal plate 19 and the connecting lug 18, reducing the number of fasteners used. The horizontal plate 19 acts as a limiter, preventing the carrier plate 15 and the U-shaped frame 20 and other structures from sliding arbitrarily, thereby improving the stability of the overall structure.

[0029] See Figures 1-5A U-shaped frame 20 is provided on the side of the horizontal plate 19 away from the connecting ear 18. Both ends of the U-shaped frame 20 are connected and fixed to the horizontal plate 19. The area of ​​the carrier plate 15 covered by the connecting ear 18 has multiple first small holes. The part of the connecting ear 18 that is in contact with the carrier plate 15 has multiple second small holes that are aligned with the first small holes. The area of ​​the horizontal plate 19 covered by the connecting ear 18 has multiple third small holes. The side of the U-shaped frame 21 facing the third small hole has multiple fourth small holes that are aligned with the third small hole. One end of the bolt 17 passes through the first small hole, the second small hole, the third small hole and the fourth small hole in sequence. The nut 22 is located on the side of the fourth small hole away from the third small hole. When installing the bolt 17 and the nut 22, one end of the bolt 17 passes through the U-shaped frame 20 and then the nut 22 is screwed on. Due to the restriction of the U-shaped frame 20, the nut 22 will not contact the horizontal plate 19. Therefore, if the nut 22 and bolt 17 cannot be properly disassembled when the tower 5 is disassembled later, the bolt 17 can be cut off using the space between the U-shaped frame 20 and the horizontal plate 19.

[0030] See Figures 1-4 The lifting lug 16 is connected to an open-body turnbuckle 7 via a first wire rope 6. The end of the open-body turnbuckle 7 furthest from the first wire rope 6 is connected to a central ring 9 via a second wire rope 8. Multiple secondary rings 10 are fitted onto the central ring 9, and multiple third wire ropes 11 are fitted onto the secondary rings 10. The end of the third wire rope 11 furthest from the secondary rings 10 is connected to a precast block 13 for burying in the ground via a horseshoe buckle 12. Both ends of the first wire rope 6 are bent to form first rope loops, and the two first rope loops on the first wire rope 6 are respectively fitted onto the lifting lug 16 and the open-body turnbuckle 7. Both ends of the second wire rope 8 are bent to form second rope loops, and the two second rope loops on the second wire rope 8 are respectively fitted onto the open-body turnbuckle 7 and the central ring 9. The two ends of the third wire rope 11 are bent to form second rope loops, and the two second rope loops on the second wire rope 8 are respectively fitted onto the open-body turnbuckle 7 and the central ring 9. The ends are all bent to form a third rope loop. A lifting ring 14 is installed on one side of the precast block 13. The two third rope loops on the third wire rope 11 are respectively connected to the secondary ring 10 and the horseshoe buckle 12. The horseshoe buckle 12 is connected to the lifting ring 14. The first wire rope 6 and the second wire rope 8 are connected by the open-body turnbuckle 7. After the precast block 13 is buried in the ground, the tension of the first wire rope 6 and the second wire rope 8 can be easily adjusted by the open-body turnbuckle 7. Lifting lugs 16 are installed between adjacent towers 5. The lifting lugs 16 are connected to the central ring 9 through the first wire rope 6, the open-body turnbuckle 7 and the second wire rope 8. The central ring 9 is then connected to the precast block 13 buried in the ground by multiple secondary rings 10 and the third wire rope 11, thus constructing a three-dimensional support network of "tower-wire rope-ground anchor". By burying the precast blocks 13 underground, away from the precast base 1, the angle between the first wire rope 6 and the horizontal plane can be less than 60°, allowing the horizontal component of the force to dominate, effectively suppressing the horizontal displacement of the tower 5 and improving wind resistance. This method eliminates the need to construct a large precast base 1, reducing costs.

[0031] See Figure 1 Diagonal bracing 3 is installed at each of the four corners of a tower 5 near the precast base 1. The end of the diagonal bracing 3 away from the tower 5 is connected to the precast base 1. A locking block 4 is rotatably connected to the upper end of the diagonal bracing 3. The locking block 4 has an "L" shaped cross section and is fixedly connected to the tower 5. A connecting seat 2 is rotatably installed at the end of the diagonal bracing 3 away from the locking block 4. The connecting seat 2 is fixedly connected to the precast base 1. Multiple positioning columns are evenly installed at the bottom of the connecting seat 2. Holes are opened in the area of ​​the precast base 1 covered by the connecting seat 2 so that the positioning columns are anchored in the holes, improving the stability of the connection between the connecting seat 2 and the precast base 1. The design of the diagonal bracing 3 further improves the wind resistance performance.

[0032] Although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A windproof mechanism for a tower crane, comprising a prefabricated base (1), characterized in that: The precast base (1) has multiple towers (5) arranged from top to bottom on its upper surface. Two adjacent towers (5) are connected by fasteners. Four evenly arranged lifting lugs (16) are installed at the contact points of two adjacent towers (5) through connectors. The lifting lugs (16) are connected to open-body turnbuckles (7) through a first wire rope (6). The end of the open-body turnbuckle (7) away from the first wire rope (6) is connected to a central ring (9) through a second wire rope (8). Multiple secondary rings (10) are fitted on the central ring (9). Multiple third wire ropes (11) are fitted on the secondary rings (10). The end of the third wire rope (11) away from the secondary rings (10) is connected to a precast block (13) for burying in the ground through a horseshoe buckle (12).

2. The windproof mechanism for a tower crane according to claim 1, characterized in that: The connector includes a carrier plate (15). Four carrier plates (15) are evenly provided at the contact points of two adjacent towers (5). The lifting lug (16) is connected and fixed to the carrier plate (15). A U-shaped frame (21) for snapping onto the contact points of two adjacent towers (5) is provided on the side of the carrier plate (15) away from the lifting lug (16). Both ends of the U-shaped frame (21) are equipped with connecting ears (18). The two ends of the carrier plate (15) are connected to the two connecting ears (18) respectively by fasteners formed by multiple sets of bolts (17) and nuts (22).

3. The windproof mechanism for a tower crane according to claim 2, characterized in that: The connecting lug (18) has a horizontal plate (19) on the side away from the carrier plate (15). The horizontal plate (19) is set inside the tower (5). The two ends of the horizontal plate (19) are in contact with two opposite inner walls inside the tower (5). One end of the bolt (17) passes through the carrier plate (15), the connecting lug (18) and the horizontal plate (19) in sequence and then the nut (22) is threaded through it.

4. The windproof mechanism for a tower crane according to claim 3, characterized in that: The horizontal plate (19) is provided with a U-shaped frame (20) on the side away from the connecting ear (18). Both ends of the U-shaped frame (20) are connected and fixed to the horizontal plate (19). The area of ​​the carrier plate (15) covered by the connecting ear (18) is provided with multiple first small holes. The part of the connecting ear (18) that is in contact with the carrier plate (15) is provided with multiple second small holes that are aligned with the first small holes. The area of ​​the horizontal plate (19) covered by the connecting ear (18) is provided with multiple third small holes. The side of the U-shaped frame (21) facing the third small hole is provided with multiple fourth small holes that are aligned with the third small hole. One end of the bolt (17) passes through the first small hole, the second small hole, the third small hole and the fourth small hole in sequence. The nut (22) is provided on the side of the fourth small hole away from the third small hole.

5. The windproof mechanism for a tower crane according to claim 2, characterized in that: The connecting ear (18) and the U-shaped frame (21) are integrally formed structures, and the connecting ear (18) and the U-shaped frame (21) are arranged perpendicular to each other.

6. The windproof mechanism for a tower crane according to claim 1, characterized in that: Both ends of the first wire rope (6) are bent to form first rope loops. The two first rope loops on the first wire rope (6) are respectively connected to the lifting lug (16) and the open turnbuckle (7). Both ends of the second wire rope (8) are bent to form second rope loops. The two second rope loops on the second wire rope (8) are respectively connected to the open turnbuckle (7) and the center ring (9).

7. The windproof mechanism for a tower crane according to claim 1, characterized in that: Both ends of the third wire rope (11) are bent to form a third rope loop. A lifting ring (14) is installed on one side of the precast block (13). The two third rope loops on the third wire rope (11) are respectively connected to the secondary ring (10) and the horseshoe buckle (12). The horseshoe buckle (12) is connected to the lifting ring (14).

8. The windproof mechanism for a tower crane according to claim 1, characterized in that: A diagonal brace (3) is installed at each of the four corners of a tower (5) near the prefabricated base (1), and the end of the diagonal brace (3) away from the tower (5) is connected to the prefabricated base (1).

9. The windproof mechanism for a tower crane according to claim 8, characterized in that: The upper end of the diagonal brace (3) is rotatably connected to a locking block (4), the locking block (4) is fixedly connected to the tower (5), and a connecting seat (2) is rotatably installed on the end of the diagonal brace (3) away from the locking block (4), the connecting seat (2) is fixedly connected to the prefabricated base (1).

10. A windproof mechanism for a tower crane according to claim 9, characterized in that: The card block (4) has an "L" shaped cross section. Multiple positioning columns are evenly installed at the bottom of the connecting seat (2). Holes are opened in the area of ​​the prefabricated base (1) covered by the connecting seat (2). The positioning columns are anchored in the holes.

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