Tower crane underframe and tower crane

Abstract

The invention relates to the technical field of tower cranes, in particular to a tower crane underframe and a tower crane.The tower crane comprises a tower body, a suspension arm is arranged at the top of the tower body, a first motor is fixedly installed on the tower body, a tower cap is arranged at the top of the suspension arm, a suspension arm pull rod and a balance arm pull rod are arranged on the two sides of the tower cap respectively, and a balance weight is arranged at one end of the suspension arm; the tower body is further provided with a cab, the other end of the suspension arm is provided with a lifting hook, and a jacking mechanism is arranged below the cab. The tower crane underframe comprises the tower crane and an underframe, and a limiting mechanism is arranged at the bottom of the underframe. Tedious mounting steps are reduced, the instability phenomenon caused by insufficient bearing capacity of the tower crane underframe can be effectively avoided, the operation stability and reliability of the tower crane are improved, the safety in the jacking and dismounting process is enhanced, and the safety of the tower crane is improved. Construction accidents caused by the unstable structure of a traditional underframe and the error rate during operation of workers are reduced, and the construction progress and quality can be effectively improved.

Description

Technical Field

[0001] This invention relates to the field of tower crane technology, specifically to a tower crane base frame and a tower crane. Background Technology

[0002] In modern construction engineering, tower cranes are widely used as important lifting equipment in building construction, especially in high-rise buildings and large-scale projects. A tower crane system consists of main parts such as the tower crane base frame, support structure, tower crane boom, and lifting device. Among these, the tower crane base frame, as the foundation of the tower crane, plays a crucial role in the overall safety and operational efficiency of the tower crane due to its stability and installation process.

[0003] Most existing tower crane base frames adopt a fixed structure, with a relatively traditional design that typically requires cumbersome installation procedures and exhibits low stability during tower crane lifting. Traditional tower crane base frame installation steps usually include multiple stages such as ground foundation preparation, base and support column installation, horizontal support structure connection, and power transmission device installation. Each stage requires significant manpower and time, and precise alignment and fixation are necessary during installation. The complex operating procedures often increase on-site risks and affect construction progress.

[0004] Furthermore, the existing tower crane base design exhibits relatively low stability during the lifting process. When the tower crane needs to be lifted, the base structure is prone to insufficient load-bearing capacity and stability, resulting in the tower crane's height not being effectively increased, and even potentially leading to unsafe situations such as tilting or sliding. This is because the support structure of traditional tower crane bases fails to fully consider the dynamic loads and various environmental factors during the lifting process, such as wind speed and load changes, thus affecting the safety and reliability of the tower crane system.

[0005] Currently, many tower crane systems still use fixed base frames for jacking. However, with the increasing complexity of construction projects, especially in high-rise buildings and deep foundation pit environments, the traditional methods of installing and jacking tower crane base frames can no longer meet the demands of modern construction for efficient, safe, and convenient operation. No solutions have yet been proposed to address these technical issues. Summary of the Invention

[0006] To address the problems in related technologies, this invention proposes a tower crane base frame and a tower crane to overcome the aforementioned technical issues in existing technologies. The purpose of this invention is to reduce cumbersome installation steps, making the tower crane installation process simpler and more efficient. It can effectively avoid instability caused by insufficient load-bearing capacity of the tower crane base frame, ensuring construction safety. At the same time, it ensures that there are no safety hazards such as tilting or sliding during the lifting process, improves the stability and reliability of tower crane operation, enhances safety during lifting and dismantling, reduces construction accidents and worker error rates caused by the instability of traditional base frame structures, and can also effectively improve construction progress and quality.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a tower crane, comprising a tower body, a boom at the top of the tower body, a motor fixedly mounted on the tower body, the output end of the motor fixedly connected to the boom, a tower cap at the top of the boom, boom tie rods and counterweight tie rods respectively provided on both sides of the tower cap, a counterweight at one end of the boom, one end of each of the boom tie rods and counterweight tie rods connected to the tower cap, the other end of the boom tie rod connected to the boom, the other end of the counterweight tie rod connected to the counterweight, a cab in the tower body, a lifting hook at the other end of the boom, and a lifting mechanism below the cab;

[0008] The lifting mechanism includes a second motor, a lifting plate, a rotating rod, a chain, and a counterweight. The second motor is mounted on the tower body. One end of the rotating rod is connected to the second motor, and the other end of the rotating rod is movably connected to the tower body. A guide rail is also provided on the tower body, and a slider is provided on the guide rail. The slider is connected to the lifting plate. A sprocket is fixedly sleeved on the rotating rod, and the chain meshes with the sprocket. Both ends of the chain are connected to the counterweight and the lifting plate, respectively.

[0009] A tower crane base frame, the tower crane base frame comprising:

[0010] The tower crane as described above,

[0011] The base frame is fixedly installed at the bottom of the tower body.

[0012] Preferably, the bottom of the base frame is provided with a limiting mechanism.

[0013] Preferably, the limiting mechanism includes a support column, a spring, and a limiting plate. The top of the support column is fixedly connected to the bottom of the base frame. A plurality of grooves are formed on the outer surface of the support column. One end of the limiting plate is movably connected to a groove. The two ends of the spring are respectively connected to the groove and the limiting plate.

[0014] Preferably, a rubber column is further provided between the groove and the limiting plate, with both ends of the rubber column connected to the groove and the limiting plate respectively, and the spring sleeved on the outer surface of the rubber column.

[0015] Preferably, the bottom end of the support column is arranged in a decreasing manner from top to bottom.

[0016] Preferably, the base frame, tower body, boom, boom tie rod, counterweight tie rod, counterweight block and lifting hook are all made of high-strength steel.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] (1) The present invention is a tower crane base frame and a tower crane. By setting a limiting mechanism at the bottom of the base frame, the support column is inserted into the required position. Under the action of the spring, the limiting plate connected to it can be limited, which improves the stability of the installation, reduces the cumbersome installation steps, makes the tower crane installation process simpler and more efficient, and can effectively avoid the instability caused by insufficient load-bearing capacity of the tower crane base frame, and ensure construction safety.

[0019] (2) The present invention is a tower crane base frame and tower crane. By starting the motor, the boom fixedly connected to it can be rotated, thereby adjusting the left and right position of the lifting hook. The boom tie rod and the counterweight tie rod play a role in stabilizing, and the counterweight plays a role in balancing. The lifting hook can lift items. The operation steps are simple and the stability is good.

[0020] (3) The present invention is a tower crane base frame and tower crane. By setting up a lifting mechanism, the starting motor drives the rotating rod fixedly connected to it to rotate. When the rotating rod rotates, it drives the sprocket to rotate, thereby moving the chain meshed with it, thereby driving the counterweight and lifting plate to move up and down, improving the stability of lifting, ensuring that there are no safety hazards such as tilting or sliding during the lifting process, improving the stability and reliability of tower crane operation, enhancing the safety during the lifting and dismantling process, reducing construction accidents caused by the instability of traditional base frame structure and the error rate of workers during operation, and can also effectively improve the construction progress and quality. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 This is a schematic diagram of the lifting mechanism of the present invention;

[0023] Figure 3 for Figure 1 An enlarged structural diagram of part A.

[0024] Explanation of reference numerals in the attached figures:

[0025] 1. Base frame; 2. Tower body; 3. Boom; 4. Motor 1; 5. Tower cap; 6. Boom tie rod; 7. Counterweight tie rod; 8. Counterweight block; 9. Operator's cab; 10. Lifting hook; 11. Motor 2; 12. Lifting plate; 13. Rotating rod; 14. Chain; 15. Guide rail; 16. Sprocket; 17. Counterweight block; 18. Support column; 19. Spring; 20. Limiting plate; 21. Rubber column. Detailed Implementation

[0026] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0027] Example 1

[0028] Please see Figure 1-3 This invention proposes a technical solution for a tower crane: a tower crane including a tower body 2, with a boom 3 mounted on the top of the tower body 2. Specifically, the tower body 2 supports the boom 3. A motor 4 is fixedly mounted on the tower body 2, and the output end of the motor 4 is fixedly connected to the boom 3. Starting the motor 4 can drive the boom 3 to rotate. The boom 3 and the tower body 2 are movably connected via bearings. A tower cap 5 is mounted on the top of the boom 3, and boom tie rods 6 and counterweight tie rods 7 are respectively mounted on both sides of the tower cap 5. Specifically, the boom tie rods 6 and counterweight tie rods 7 serve to support the boom 3. The crane body 2 is equipped with a counterweight 8 at one end of the boom 3, which serves to maintain balance. One end of the boom tie rod 6 and the counterweight tie rod 7 are connected to the tower cap 5, the other end of the boom tie rod 6 is connected to the boom 3, and the other end of the counterweight tie rod 7 is connected to the counterweight 8. The tower body 2 also has a driver's cab 9, and the other end of the boom 3 is equipped with a lifting hook 10, which can lift items. A lifting mechanism is located below the driver's cab 9, which can lift workers and other items to the required position.

[0029] The lifting mechanism includes a second motor 11, a lifting plate 12, a rotating rod 13, a chain 14, and a counterweight 17. The second motor 11 is mounted on the tower body 2. One end of the rotating rod 13 is connected to the second motor 11, and the other end of the rotating rod 13 is movably connected to the tower body 2. A guide rail 15 is also provided on the tower body 2, and a slider is provided on the guide rail 15. The slider is connected to the lifting plate 12. A sprocket 16 is fixedly sleeved on the rotating rod 13. The chain 14 meshes with the sprocket 16, and both ends of the chain 14 are connected to the counterweight 17 and the lifting plate 12, respectively. Specifically, starting the second motor 11 drives the rotating rod 13, which is fixedly connected to it, to rotate. When the rotating rod 13 rotates, it drives the sprocket 16 to rotate, thereby moving the chain 14 that is meshed with it, thereby driving the counterweight 17 and the lifting plate 12 to move up and down.

[0030] Example 2

[0031] Please see Figure 1-3 This invention proposes a technical solution for a tower crane base frame: a tower crane base frame comprising:

[0032] The tower crane shown above,

[0033] Base frame 1 is fixedly installed at the bottom of tower body 2.

[0034] Please see Figure 3 As shown, a limiting mechanism is further provided at the bottom of the base frame 1.

[0035] In this embodiment, the limiting mechanism can effectively improve the stability of the base frame 1 installation.

[0036] Please see Figure 3 As shown, the limiting mechanism further includes a support column 18, a spring 19 and a limiting plate 20. The top of the support column 18 is fixedly connected to the bottom of the base frame 1. Several grooves are provided on the outer surface of the support column 18. One end of the limiting plate 20 is movably connected to the groove. The two ends of the spring 19 are respectively connected to the groove and the limiting plate 20.

[0037] In this embodiment, the support column 18 can be inserted into the desired position, and under the action of the spring 19, the limiting plate 20 connected to it can be limited, thereby improving the stability of the installation.

[0038] Please see Figure 3 As shown, a rubber post 21 is further provided between the groove and the limiting plate 20. The two ends of the rubber post 21 are connected to the groove and the limiting plate 20 respectively, and the spring 19 is sleeved on the outer surface of the rubber post 21.

[0039] In this embodiment, the rubber column 21 can effectively enhance the stability of the limiting plate 20 in limiting the position.

[0040] Please see Figure 3 As shown, the bottom end of the support column 18 is arranged in a decreasing manner from top to bottom.

[0041] In this embodiment, the insertion effect is improved.

[0042] Please see Figure 1-3 As shown, the base frame 1, tower body 2, boom 3, boom tie rod 6, counterweight tie rod 7, counterweight block 8 and lifting hook 10 are all made of high-strength steel.

[0043] In this embodiment, the overall robustness is improved.

[0044] Working principle of the invention:

[0045] First, install the base frame 1, place the base frame 1 in the required position, and then fix it with bolts. At the same time, the limiting mechanism positions the base frame 1. Insert the support column 18 into the required position. Under the action of the spring 19, the limiting plate 20 connected to it can be limited, improving the stability of the installation.

[0046] The lifting mechanism can lift workers and other items to the required position. The starting motor 11 drives the rotating rod 13, which is fixedly connected to it, to rotate. When the rotating rod 13 rotates, it drives the sprocket 16 to rotate, thereby moving the chain 14 that meshes with it. This causes the counterweight 17 and the lifting plate 12 to move up and down (when the counterweight 17 rises, the lifting plate 12 falls, and when the lifting plate 12 falls, the counterweight 17 rises). The starting motor 4 can drive the boom 3, which is fixedly connected to it, to rotate, thereby adjusting the left and right position of the lifting hook 10. The boom tie rod 6 and the counterweight tie rod 7 serve to secure the boom, and the counterweight 8 serves to balance the boom. The lifting hook 10 can lift items.

[0047] The purpose of this invention is to reduce cumbersome installation steps, making the tower crane installation process simpler and more efficient. It can effectively avoid instability caused by insufficient load-bearing capacity of the tower crane base, ensuring construction safety. At the same time, it ensures that there are no safety hazards such as tilting or sliding during the lifting process, improves the stability and reliability of tower crane operation, enhances safety during lifting and dismantling, reduces construction accidents and worker error rates caused by the instability of traditional base structures, and can also effectively improve construction progress and quality.

[0048] In the description of this invention, it should be understood that the terms "coaxial," "bottom," "one end," "top," "middle," "other end," "upper," "side," "top," "inner," "front," "center," "both ends," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0049] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "setting," "connection," "fixing," "screw connection," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0050] Although embodiments of the 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 invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A tower crane, characterized in that, The tower body (2) includes a tower body (2), a boom (3) is provided on the top of the tower body (2), a motor (4) is fixedly installed on the tower body (2), the output end of the motor (4) is fixedly connected to the boom (3), a tower cap (5) is provided on the top of the boom (3), a boom tie rod (6) and a counterweight tie rod (7) are provided on both sides of the tower cap (5), a counterweight (8) is provided at one end of the boom (3), one end of the boom tie rod (6) and the counterweight tie rod (7) are both connected to the tower cap (5), the other end of the boom tie rod (6) is connected to the boom (3), the other end of the counterweight tie rod (7) is connected to the counterweight (8), the tower body (2) is also provided with a driver's cab (9), a lifting hook (10) is provided at the other end of the boom (3), and a lifting mechanism is provided below the driver's cab (9); The lifting mechanism includes a second motor (11), a lifting plate (12), a rotating rod (13), a chain (14), and a counterweight (17). The second motor (11) is installed on the tower body (2). One end of the rotating rod (13) is connected to the second motor (11), and the other end of the rotating rod (13) is movably connected to the tower body (2). A guide rail (15) is also provided on the tower body (2). A slider is provided on the guide rail (15), and the slider is connected to the lifting plate (12). A sprocket (16) is fixedly sleeved on the rotating rod (13). The chain (14) and the sprocket (16) mesh. The two ends of the chain (14) are connected to the counterweight (17) and the lifting plate (12), respectively.

2. A tower crane base frame, characterized in that, The tower crane base frame includes: The tower crane according to claim 1, The base frame (1) is fixedly installed at the bottom of the tower body (2).

3. A tower crane base frame according to claim 1, characterized in that: The bottom of the base frame (1) is provided with a limiting mechanism.

4. A tower crane base frame according to claim 3, characterized in that: The limiting mechanism includes a support column (18), a spring (19) and a limiting plate (20). The top of the support column (18) is fixedly connected to the bottom of the base frame (1). Several grooves are provided on the outer surface of the support column (18). One end of the limiting plate (20) is movably connected to the groove. The two ends of the spring (19) are respectively connected to the groove and the limiting plate (20).

5. A tower crane base frame according to claim 4, characterized in that: A rubber column (21) is also provided between the groove and the limiting plate (20). The two ends of the rubber column (21) are connected to the groove and the limiting plate (20) respectively, and the spring (19) is sleeved on the outer surface of the rubber column (21).

6. A tower crane base frame according to claim 5, characterized in that: The bottom end of the support column (18) is arranged in a decreasing manner from top to bottom.

7. A tower crane base frame according to claim 1, characterized in that: The base frame (1), tower body (2), boom (3), boom tie rod (6), counterweight tie rod (7), counterweight (8) and lifting hook (10) are all made of high-strength steel.

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