Boom self-discharging mechanism for self-discharging tower crane

Abstract

The utility model relates to the technical field of tower cranes, and discloses a cargo boom self-unloading mechanism for a self-unloading tower crane, which comprises a tower crane body, a detachable cargo boom and a fixed cargo boom, a first winch and a second winch are fixedly arranged on the mounting base, a first steel rope is wound around the output end of the first winch, and the end, away from the first winch, of the first steel rope is fixedly mounted and connected to one end of the detachable cargo boom. According to the cargo boom self-discharging mechanism for the self-discharging tower crane, after self-discharging is completed, the winch can be kept braked and reutilized, the steel ropes are directly used as tensile components in the tensioned state to bear the load of the cargo boom, additional tensile steel ropes do not need to be installed, the load can be dispersed to the two ends of the cargo boom through the design of the double steel ropes, and the cargo boom self-discharging efficiency is improved. Stress concentration of a single connection point is reduced, and the anti-deformation capacity of the structure is improved.

Description

Technical Field

[0001] This utility model relates to the field of tower crane technology, specifically to a self-unloading mechanism for the boom of a self-unloading tower crane. Background Technology

[0002] Tower cranes are commonly used equipment on construction sites, used for the vertical transportation of various building materials and workers, greatly improving construction efficiency. After construction is completed, tower cranes need to be dismantled. Due to their height and long boom, the current dismantling method mainly involves lowering the tower crane sections and then using a truck crane to dismantle the entire boom.

[0003] Chinese Utility Model Patent Publication No. CN221917159U discloses a self-unloading device for a tower crane boom. This device utilizes the existing hoisting wire rope and main winch of the tower crane. During use, only guide wheels need to be installed, and the wire rope is wound around the guide wheels and fixed to the boom section to be disassembled. The device is easy to install, reducing labor costs. Utilizing the tower crane's own main winch wire rope and main winch saves material costs. However, although this self-unloading device can disassemble the boom, the wire rope and main winch are not easily reused after disassembly, resulting in poor practicality. Summary of the Invention

[0004] The technical problem to be solved by this utility model is to provide a self-unloading mechanism for the boom of a self-unloading tower crane, which can effectively solve the problems in the prior art.

[0005] The technical solution adopted by this utility model is: a self-unloading mechanism for a self-unloading tower crane, comprising a tower crane body, a disassembly boom, and a fixed boom. A mounting base is fixedly installed on the top of the tower crane body via a tower crane top seat. A first winch and a second winch are fixedly mounted on the mounting base. A first steel rope is wound around the output end of the first winch. The end of the first steel rope away from the first winch is fixedly connected to one end of the disassembly boom. A second steel rope is wound around the output end of the second winch. A mounting frame is fixedly installed at the end of the disassembly boom near the fixed boom. A connecting block is fixedly installed at the end of the fixed boom near the disassembly boom. The mounting frame and the connecting block are detachably fastened together by fasteners.

[0006] Preferably, the first steel rope is connected to the dismantling lifting arm via a first connecting buckle, and the second steel rope is connected to the dismantling lifting arm via a second connecting buckle. The first and second connecting buckles are detachable hooks or snap-fit ​​structures.

[0007] Through the above technical solution, the detachable hook or buckle structure enables the quick assembly and disassembly of the first steel rope, the second steel rope and the disassembly boom. The rigid connection design of the hook or buckle ensures that the traction force is stably transmitted to the disassembly boom through the first connecting buckle and the second connecting buckle, avoiding slippage or detachment of the steel rope and ensuring the safety of the disassembly process.

[0008] Preferably, the two ends of the disassembly boom are respectively provided with a first mounting groove and a second mounting groove, and the connecting ends of the first steel rope and the second steel rope are respectively embedded in the first mounting groove and the second mounting groove and fixed.

[0009] Through the above technical solution, the first installation groove and the second installation groove can facilitate the installation of the steel rope connection end. The groove body can limit the connection end and prevent the first steel rope and the second steel rope from lateral displacement when under force.

[0010] Preferably, a first mounting block is fixedly installed at the end of the disassembly boom near the first steel cable, and a second mounting block is fixedly installed at the end of the fixing boom near the second steel cable. The first mounting block is adapted to the first connecting buckle, and the second mounting block is adapted to the second connecting buckle.

[0011] Through the above technical solution, the design of the first and second mounting blocks allows them to be fixed to the end of the boom with bolts, which can evenly distribute the traction force of the steel rope to the main structure for disassembling and fixing the boom, thus avoiding direct force on the first and second connecting buckles.

[0012] Preferably, a connecting sleeve is fixedly installed at the end of the tower crane top base near the first winch, and a connecting frame is provided at the end of the connecting sleeve away from the tower crane top base. A second winch is fixedly installed on the connecting frame, and a positioning groove for positioning the connecting sleeve and the connecting frame is provided at one end of the connecting sleeve.

[0013] Through the above technical solution, and through the design of the connecting sleeve and the connecting frame, the two can be quickly installed through the positioning groove, which then facilitates the quick installation of the first winch and the second winch.

[0014] Preferably, the output drum diameters of the first winch and the second winch are the same, and the first winch and the second winch are located on different horizontal planes to avoid the steel ropes from getting tangled and interfering, and to achieve synchronous and stable winding and unwinding.

[0015] By employing the above technical solution and the arrangement of different horizontal planes, the first and second steel ropes can be arranged in a vertical direction during winding, avoiding entanglement and interference between the two, and enabling the dismantling boom to maintain a horizontal posture during self-unloading.

[0016] Preferably, when the disassembly boom is fastened to the connecting block via the mounting frame, the first winch and the second winch remain in a braked state, so that the first steel rope and the second steel rope are tensioned and act as tensile steel ropes to bear the load.

[0017] With the above technical solution, once the installation is completed, the first and second steel ropes in the braking state can directly replace traditional tensile components to withstand the horizontal tension and bending moment of the disassembly boom.

[0018] Compared with the prior art, this utility model provides a self-unloading mechanism for the boom of a self-unloading tower crane, which has the following advantages:

[0019] 1. The self-unloading mechanism for the boom of the self-unloading tower crane has a first winch connected to one end of the boom via a first steel cable, and a second winch connected to the other end via a second steel cable. The two winches are simultaneously raised and lowered to achieve the lifting or translation of the boom.

[0020] 2. The self-unloading mechanism of the boom used in this self-unloading tower crane allows the winch to remain braked after self-unloading, enabling it to be reused. The steel ropes, when tensioned, directly serve as tensile members to bear the load of the boom, eliminating the need for additional tensile steel ropes. Furthermore, the double steel rope design can distribute the load to both ends of the boom, reducing stress concentration at a single connection point and improving the structure's resistance to deformation. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 1 ;

[0022] Figure 2 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 2 ;

[0023] Figure 3 This is a schematic diagram of the mounting base and the first winch installation structure of this utility model;

[0024] Figure 4 This is a schematic diagram of the installation structure of the connecting frame and connecting block of this utility model;

[0025] Figure 5 This is a schematic diagram of the installation structure of the first and second winches of this utility model.

[0026] The components include: 1. Tower crane body; 2. Tower crane top base; 3. Mounting base; 4. First winch; 5. First steel rope; 6. First connecting buckle; 7. First mounting slot; 8. First mounting block; 9. Disassembled boom; 10. Connecting sleeve; 11. Positioning slot; 12. Connecting frame one; 13. Second winch; 14. Second steel rope; 15. Second connecting buckle; 16. Second mounting slot; 17. Second mounting block; 18. Mounting frame; 19. Connecting block; 20. Fixed boom. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] Example 1: As Figure 1-5 As shown, the present invention provides a self-unloading mechanism for a self-unloading tower crane, comprising a tower crane body 1, a disassembly boom 9, and a fixed boom 20. A mounting base 3 is fixedly installed on the top of the tower crane body 1 via a tower crane top seat 2. A first winch 4 and a second winch 13 are fixedly mounted on the mounting base 3. A first steel rope 5 is wound around the output end of the first winch 4. The end of the first steel rope 5 away from the first winch 4 is fixedly connected to one end of the disassembly boom 9. A second steel rope 14 is wound around the output end of the second winch 13. A mounting frame 18 is fixedly installed on the end of the disassembly boom 9 near the fixed boom 20. A connecting block 19 is fixedly installed on the end of the fixed boom 20 near the disassembly boom 9. The mounting frame 18 and the connecting block 19 are detachably fastened together by fasteners.

[0029] Specifically, the first steel cable 5 is connected to the dismantling boom 9 via the first connecting buckle 6, and the second steel cable 14 is connected to the dismantling boom 9 via the second connecting buckle 15. The first connecting buckle 6 and the second connecting buckle 15 are detachable hook or snap-fit ​​structures. The advantage is that the detachable hook or snap-fit ​​structure enables quick assembly and disassembly of the first steel cable 5, the second steel cable 14 and the dismantling boom 9, and the rigid connection design of the hook or snap-fit ​​ensures that the traction force is stably transmitted to the dismantling boom 9 through the first connecting buckle 6 and the second connecting buckle 15, avoiding slippage or detachment of the steel cables and ensuring the safety of the dismantling process.

[0030] Specifically, the two ends of the disassembled lifting boom 9 are respectively provided with a first mounting groove 7 and a second mounting groove 16. The connecting ends of the first steel rope 5 and the second steel rope 14 are respectively embedded in the first mounting groove 7 and the second mounting groove 16 and fixed. The advantage is that the first mounting groove 7 and the second mounting groove 16 can facilitate the installation of the steel rope connecting ends. Through the limiting effect of the groove body on the connecting ends, the first steel rope 5 and the second steel rope 14 can be prevented from lateral displacement when under force.

[0031] Specifically, a first mounting block 8 is fixedly installed at the end of the disassembly boom 9 near the first steel cable 5, and a second mounting block 17 is fixedly installed at the end of the fixing boom 20 near the second steel cable 14. The first mounting block 8 is adapted to the first connecting buckle 6, and the second mounting block 17 is adapted to the second connecting buckle 15. The advantage is that, through the design of the first mounting block 8 and the second mounting block 17, they can be fixed to the end of the boom with bolts, which can evenly distribute the traction force of the steel cable to the main structure of the disassembly boom 9 and the fixing boom 20, and avoid the first connecting buckle 6 and the second connecting buckle 15 being directly stressed.

[0032] Example 2: Figure 2-5 As shown, this is an improvement on the previous embodiment.

[0033] Specifically, a connecting sleeve 10 is fixedly installed at the end of the tower crane top base 2 near the first winch 4, and a connecting frame 12 is provided at the end of the connecting sleeve 10 away from the tower crane top base 2. A second winch 13 is fixedly installed on the connecting frame 12. A positioning groove 11 is provided at one end of the connecting sleeve 10 to position the connecting sleeve 10 and the connecting frame 12. The advantage is that, through the design of the connecting sleeve 10 and the connecting frame 12, the two can be quickly installed through the positioning groove 11, which facilitates the quick installation of the first winch 4 and the second winch 13.

[0034] Specifically, the output drum diameters of the first winch 4 and the second winch 13 are the same. The first winch 4 and the second winch 13 are located on different horizontal planes to avoid the steel ropes from getting tangled and interfering, and to achieve synchronous and stable winding and unwinding. The advantage is that by using different horizontal planes, the first steel rope 5 and the second steel rope 14 can be arranged in a vertical direction when winding, avoiding tangling and interference between the two, and allowing the dismantling boom 9 to maintain a horizontal posture during the self-unloading process.

[0035] Specifically, when the lifting boom 9 is disassembled and fastened to the connecting block 19 via the mounting frame 18, the first winch 4 and the second winch 13 remain in a braked state, so that the first steel rope 5 and the second steel rope 14 are tensioned and act as tensile steel ropes to bear the load. The advantage is that after installation, the first steel rope 5 and the second steel rope 14 in the braked state can directly replace the traditional tensile components to bear the horizontal tension and bending moment of the disassembly lifting boom 9.

[0036] Working principle: During use, the mounting frame 18 of the dismantling boom 9 is fastened to the connecting block 19 of the fixed boom 20 using fasteners. Alignment is ensured using structures such as the positioning groove 11, and then fixed with bolts or pins. The first connecting buckle 6 of the first steel rope 5 is connected to the first mounting block 8 at one end of the dismantling boom 9, and the second connecting buckle 15 of the second steel rope 14 is connected to the second mounting block 17 at the other end, embedded in the first mounting groove 7 and the second mounting groove 16 for fixation. The first winch 4 and the second winch 13 are started, and the first steel rope 5 and the second steel rope 14 are wound around the output end. The two winches are used to simultaneously wind up and down the drums with the same diameter and located on different horizontal planes to avoid entanglement. The dismantling boom 9 is slowly lowered or raised to separate from the fixed boom 20. After self-unloading, the first winch 4 and the second winch 13 are kept in the braking state to keep the steel ropes taut. At this time, the first steel rope 5 and the second steel rope 14 act as tensile members, bearing the horizontal tension and bending moment of the dismantling boom 9, without the need for additional tensile components.

[0037] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A crane boom self-discharging mechanism for a self-discharging tower crane, comprising a tower crane body (1), a detachable crane boom (9) and a fixed crane boom (20), characterized in that: The top of the tower crane body (1) is fixedly mounted with a mounting base (3) via a tower crane top seat (2). A first winch (4) and a second winch (13) are fixedly mounted on the mounting base (3). A first steel rope (5) is wound around the output end of the first winch (4). The end of the first steel rope (5) away from the first winch (4) is fixedly connected to the end of the dismantling boom (9). A second steel rope (14) is wound around the output end of the second winch (13). An installation frame (18) is fixedly mounted on the end of the dismantling boom (9) near the fixed boom (20). A connecting block (19) is fixedly mounted on the end of the fixed boom (20) near the dismantling boom (9).

2. A self-discharging boom mechanism for a self-discharging tower crane according to claim 1, characterized in that: The first steel rope (5) is connected to the dismantling lifting arm (9) through the first connecting buckle (6), and the second steel rope (14) is connected to the dismantling lifting arm (9) through the second connecting buckle (15). The first connecting buckle (6) and the second connecting buckle (15) are detachable hooks or buckles.

3. A self-discharging boom mechanism for a self-discharging tower crane according to claim 1, characterized in that: The two ends of the disassembly lifting arm (9) are respectively provided with a first mounting groove (7) and a second mounting groove (16), and the connecting ends of the first steel rope (5) and the second steel rope (14) are respectively embedded in the first mounting groove (7) and the second mounting groove (16) and fixed.

4. A self-discharging boom mechanism for a self-discharging tower crane according to claim 1, characterized in that: The disassembly boom (9) is fixedly installed with a first mounting block (8) at one end near the first steel rope (5), and the fixed boom (20) is fixedly installed with a second mounting block (17) at one end near the second steel rope (14). The first mounting block (8) is adapted to the first connecting buckle (6), and the second mounting block (17) is adapted to the second connecting buckle (15).

5. A self-discharging boom mechanism for a self-discharging tower crane according to claim 1, characterized in that: A connecting sleeve (10) is fixedly installed at one end of the tower crane top base (2) near the first winch (4). A connecting frame (12) is provided at the other end of the connecting sleeve (10) away from the tower crane top base (2). A second winch (13) is fixedly installed on the connecting frame (12). A positioning groove (11) is provided at one end of the connecting sleeve (10) for positioning and connection with the connecting frame (12).

6. A self-discharging boom mechanism for a self-discharging tower crane according to claim 1, characterized in that: The output drum diameters of the first winch (4) and the second winch (13) are the same, and the first winch (4) and the second winch (13) are located on different horizontal planes.

7. A self-unloading mechanism for a self-unloading tower crane according to claim 1, characterized in that: When the disassembly boom (9) is fastened to the connecting block (19) via the mounting frame (18), the first winch (4) and the second winch (13) remain in a braking state.

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