A counterweight adjusting device for a tower crane

Abstract

The utility model discloses a tower crane counterweight adjusting device belongs to tower crane counterweight adjusting technical field, including balance arm support, the below symmetry of balance arm support and fixedly connected with conveying roller, the top of conveying roller is connected with counterweight belt with sliding, the top of balance arm support is installed with winch, and one end of winch is fixedly connected with counterweight belt, and the top of winch is covered with protection assembly, and balance arm support and winch are connected through damping assembly, the utility model discloses setting protection assembly, and the top of winch is effectively protected, makes it avoid rainwater erosion, prolongs equipment life. In addition, the cover assembly can not only protect the fastener, but also can form the spacing to the rotating block, further enhances the overall stability after installation, the utility model sets up damping assembly, effectively absorbs and slows down the vibration produced when winch works, thereby prevents long -term violent vibration and leads to installation loose or component damage.

Description

Technical Field

[0001] This utility model belongs to the field of tower crane counterweight adjustment technology, and specifically relates to a tower crane counterweight adjustment device. Background Technology

[0002] A tower crane is a type of rotating crane with its jib mounted on a tall tower. It offers a large working space and is primarily used for the vertical and horizontal transport of materials and the installation of building components in construction. It consists of three main parts: the metal structure, the working mechanism, and the electrical system. The metal structure includes the tower, jib, and base. The working mechanism comprises four parts: hoisting, luffing, slewing, and traveling. The electrical system includes motors, controllers, distribution cabinets, wiring, signaling, and lighting devices.

[0003] In existing technologies, such as an adjustable counterweight for tower cranes, the counterweight is moved left and right by a winch to adjust its torque. However, this technology has significant shortcomings. The winch lacks effective protection above it. Although it has basic waterproofing, long-term exposure to the outdoor environment can still lead to rain erosion and equipment damage. In addition, the device lacks a dedicated vibration damping mechanism, which cannot effectively absorb and mitigate the vibrations generated during winch operation. Long-term operation can easily lead to loose connections or fatigue damage to structural components. Utility Model Content

[0004] To address the problems mentioned in the background section, this invention provides a tower crane counterweight adjustment device. This device effectively protects the area above the winch while also effectively absorbing and mitigating the vibrations generated during winch operation.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a tower crane counterweight adjustment device, including a counterweight boom, with conveyor rollers symmetrically and fixedly connected below the counterweight boom, a counterweight belt slidably connected above the conveyor rollers, a winch installed above the counterweight boom, one end of the winch being fixedly connected to the counterweight belt, a protective component covering the top of the winch, and the counterweight boom and the winch being connected by a vibration damping component. The protective assembly includes a protective cover that covers the winch. U-shaped seats are symmetrically and fixedly connected to both ends of the lower part of the protective cover. The U-shaped seats and the counterweight boom are tightly fitted together. A limit screw is threaded in the middle of the U-shaped seat. A cylindrical drive block is fixedly connected to one end of the limit screw, and a rotating block is fixedly connected to the other end of the limit screw. A rubber clamping pad is fixedly connected to the end of the cylindrical drive block away from the limit screw. A sealing assembly is provided on one side of the rotating block.

[0006] Preferably, an auxiliary rod is fixedly connected around the surface of the rotating block, and a sponge sleeve is fixedly fitted onto the surface of the auxiliary rod.

[0007] Preferably, the sealing assembly includes an external threaded tube seat, which is fixedly connected to one side of the U-shaped seat. An internal threaded tube seat is threadedly connected to the surface of the external threaded tube seat. One end of the internal threaded tube seat is fixedly connected to a cover body, and the inner wall of the cover body fits against the rotating block.

[0008] Preferably, a rubber sealing ring is fixedly connected to the side of the internally threaded tube seat away from the cover.

[0009] Preferably, the vibration damping assembly includes a connecting seat, which is installed below the winch. Connecting bolts are inserted into both sides of the winch and are threadedly connected to the connecting seat. A damping vibration damper is symmetrically and fixedly connected below the connecting seat. A mounting seat is fixedly connected below the damping vibration damper. Mounting bolts are symmetrically inserted into one side of the mounting seat and are threadedly connected to the balance boom.

[0010] Preferably, a rubber washer is fitted on the surface of one end of the connecting bolt, and a rubber washer is also fitted on the surface of one end of the mounting bolt.

[0011] Preferably, a positioning rod is fixedly connected to one end of the mounting base below, and a positioning groove that matches the positioning rod is provided on the upper part of the balance arm.

[0012] Compared with the prior art, the beneficial effects of this utility model are: 1. This utility model effectively protects the top of the winch from rainwater corrosion by incorporating protective components, thus extending the equipment's service life. Furthermore, the cover component not only protects the fasteners but also limits the movement of the rotating block, further enhancing the overall stability after installation.

[0013] 2. This utility model effectively absorbs and reduces the vibration generated during the operation of the winch by incorporating vibration damping components, thereby preventing long-term severe vibration from causing loosening of installations or damage to components. Furthermore, the structure is rationally designed, facilitating assembly and maintenance. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram showing the partial structural separation of this utility model; Figure 3 This is a cross-sectional structural diagram of the protective component of this utility model; Figure 4 This is a cross-sectional structural diagram of the capping assembly of this utility model; Figure 5 This is a schematic diagram of the vibration damping component of this utility model.

[0015] In the diagram: 1. Balance boom; 2. Conveyor roller; 3. Counterweight belt; 4. Winch; 5. Protective components; 51. Protective cover; 52. U-shaped seat; 53. Limiting screw; 54. Cylindrical drive block; 55. Rotating block; 56. Rubber clamping pad; 57. Cover assembly; 58. Auxiliary rod; 571. External threaded pipe seat; 572. Internal threaded pipe seat; 573. Cover body; 574. Rubber sealing ring; 6. Vibration damping components; 61. Connecting seat; 62. Connecting bolt; 63. Damping vibration damper; 64. Mounting seat; 65. Mounting bolt; 66. Positioning rod. Detailed Implementation

[0016] 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.

[0017] Example 1: Please see Figure 1-5 The present invention provides the following technical solution: a tower crane counterweight adjustment device, including a counterweight boom 1, a conveyor roller 2 symmetrically and fixedly connected below the counterweight boom 1, a counterweight belt 3 slidably connected above the conveyor roller 2, a winch 4 installed above the counterweight boom 1, one end of the winch 4 being fixedly connected to the counterweight belt 3, a protective component 5 covering the top of the winch 4, and the counterweight boom 1 and the winch 4 being connected by a vibration damping component 6; The protective assembly 5 includes a protective cover 51, which is installed above the winch 4. U-shaped seats 52 are symmetrically and fixedly connected to both ends of the lower part of the protective cover 51. The U-shaped seats 52 and the counterweight boom 1 are tightly fitted together. A limit screw 53 is threadedly connected to the middle of the U-shaped seat 52. A cylindrical drive block 54 is fixedly connected to one end of the limit screw 53, and a rotating block 55 is fixedly connected to the other end of the limit screw 53. A rubber clamping pad 56 is fixedly connected to the end of the cylindrical drive block 54 away from the limit screw 53. A sealing assembly 57 is provided on one side of the rotating block 55.

[0018] Specifically, an auxiliary rod 58 is fixedly connected around the surface of the rotating block 55, and a sponge sleeve is fixedly fitted onto the surface of the auxiliary rod 58.

[0019] By adopting the above technical solution, the U-shaped seat 52 below the protective cover 51 is connected to the balance boom 1. Then, rotating the rotating block 55 causes the limiting screw 53 to screw in, which in turn drives the cylindrical drive block 54 and the rubber clamping pad 56 to work together to secure the U-shaped seat 52 to the balance boom 1, thus completing the fixed installation of the protective cover 51 and providing rain and dust protection for the winch 4. The rotating block 55 is equipped with an auxiliary rod 58, allowing for easy rotation of the rotating block 55, and its surface is covered with a soft sponge sleeve to improve grip comfort.

[0020] Specifically, the capping assembly 57 includes an external threaded tube seat 571, which is fixedly connected to one side of the U-shaped seat 52. An internal threaded tube seat 572 is threadedly connected to the surface of the external threaded tube seat 571. A cap 573 is fixedly connected to one end of the internal threaded tube seat 572. The inner wall of the cap 573 fits against the rotating block 55.

[0021] By adopting the above technical solution, the internal threaded tube seat 572 of the cover assembly 57 is screwed into the external threaded tube seat 571 on the U-shaped seat 52, so that the cover body 573 tightly covers the rotating block 55. This not only prevents rainwater from eroding the limiting screw 53, but also uses the inner wall of the cover body 573 to form an axial limit on the rotating block 55, preventing loosening and further enhancing reliability.

[0022] Specifically, a rubber sealing ring 574 is fixedly connected to the side of the internal threaded pipe seat 572 away from the cover body 573.

[0023] By adopting the above technical solution, the rubber sealing ring 574 facilitates the sealing between the internal threaded pipe seat 572 and the external threaded pipe seat 571, preventing rainwater from seeping in.

[0024] The steps of this embodiment are as follows: First, connect the U-shaped seat 52 below the protective cover 51 to the balance arm 1. Then, rotate the rotating block 55, causing the limiting screw 53 to screw in, which in turn drives the cylindrical drive block 54 and the rubber clamping pad 56 to work together to fasten the U-shaped seat 52 to the balance arm 1, thus completing the fixed installation of the protective cover 51 and protecting the winch 4 from rain and dust. The rotating block 55 is equipped with an auxiliary rod 58, which makes it easy to rotate the rotating block 55, and the sponge soft sleeve on its surface improves the grip comfort. Finally, screw the internal threaded tube seat 572 of the cover assembly 57 into the external threaded tube seat 571 on the U-shaped seat 52, so that the cover 573 tightly covers the rotating block 55. This not only prevents rainwater from eroding the limiting screw 53, but also uses the inner wall of the cover 573 to form an axial limit on the rotating block 55 to prevent loosening and further enhance reliability.

[0025] Example 2: The difference between this embodiment and embodiment 1 is that, specifically, the vibration damping component 6 includes a connecting seat 61, which is installed below the winch 4. Connecting bolts 62 are inserted into both sides of the winch 4, and the connecting bolts 62 are threadedly connected to the connecting seat 61. A damping shock absorber 63 is symmetrically and fixedly connected below the connecting seat 61. A mounting seat 64 is fixedly connected below the damping shock absorber 63. Mounting bolts 65 are symmetrically inserted into one side of the mounting seat 64, and the mounting bolts 65 are threadedly connected to the balance boom 1.

[0026] By adopting the above technical solution, the connecting seat 61 is connected to both sides of the winch 4, and then the connecting seat 61 and the winch 4 are fixed together by the connecting bolts 62. Finally, the mounting bolts 65 and the mounting seat 64 are used to install and fix the device onto the balance boom 1, thus completing the assembly. The damping shock absorber 63 effectively absorbs and reduces the vibration generated by the winch 4 during operation.

[0027] Specifically, a rubber washer is fitted on the surface of one end of the connecting bolt 62, and a rubber washer is also fitted on the surface of one end of the mounting bolt 65.

[0028] By adopting the above technical solution, the rubber washer facilitates the installation of connecting bolt 62 and mounting bolt 65. When the side of the threaded rod closes to the mounting surface, the rubber washer can increase the tightening force and play a damping and anti-slip role, thereby reducing the possibility of loosening.

[0029] Specifically, a positioning rod 66 is fixedly connected to one end of the mounting base 64, and a positioning groove that matches the positioning rod 66 is provided on the upper part of the balance arm 1.

[0030] By adopting the above technical solution, the positioning rod 66 and the positioning groove cooperate to facilitate the positioning between the mounting base 64 and the balance arm 1.

[0031] In this embodiment, during installation, firstly, the connecting seat 61 is fixed to both sides of the winch 4 using connecting bolts 62; then, the mounting seat 64 is fixed to the counterweight boom 1 using mounting bolts 65, thus completing the assembly. The damping shock absorber 63 effectively absorbs and reduces the vibration generated by the winch 4 during operation, thereby ensuring the stability of the counterweight adjustment process.

[0032] The working principle and usage process of this utility model are as follows: This device is used for tower cranes, and the torque is balanced by adjusting the position of the counterweight. Initially, the counterweight belt 3 is suspended on the conveyor roller 2, and the torque it generates is exactly balanced with the center-of-gravity torque of the lifting arm. When the lifting arm lifts a load, the torque sensor on the tower detects that the torque on the tower is less than the rated value, and then starts the winch 4. When the winch 4 releases the rope, the counterweight belt 3 moves to the left under gravity, and its center of gravity also shifts to the left, thus gradually increasing the counterweight torque. When the sum of the counterweight torque and the load torque reaches the rated torque, the winch 4 stops working, and the system returns to balance. Throughout the adjustment process, the vibration damping component 6 effectively absorbs and reduces the vibration generated by the winch 4, while the protective component 5 provides protection for the winch 4, preventing damage due to environmental factors.

[0033] The protective assembly 5 is used following these steps: First, connect the U-shaped seat 52 below the protective cover 51 to the balance boom 1. Then, rotate the rotating block 55, causing the limiting screw 53 to screw in, which in turn drives the cylindrical drive block 54 and the rubber clamping pad 56 to work together to secure the U-shaped seat 52 to the balance boom 1, thus completing the fixed installation of the protective cover 51 and protecting the winch 4 from rain and dust. The rotating block 55 is equipped with an auxiliary rod 58, whose surface is covered with a soft sponge sleeve to improve grip comfort. Finally, screw the internal threaded tube seat 572 of the cover assembly 57 into the external threaded tube seat 571 on the U-shaped seat 52, so that the cover 573 tightly covers the rotating block 55. This not only prevents rainwater from eroding the limiting screw 53, but also uses the inner wall of the cover 573 to axially limit the rotating block 55, preventing loosening and further enhancing reliability.

[0034] The installation process of the vibration damping component 6 is as follows: First, the connecting seat 61 is fixed to both sides of the winch 4 using connecting bolts 62; then, the mounting seat 64 is fixed to the counterweight boom 1 using mounting bolts 65, thus completing the assembly. The damping vibration damper 63 effectively absorbs and reduces the vibration generated by the winch 4 during operation, thereby ensuring the stability of the counterweight adjustment process.

[0035] 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 tower crane counterweight adjustment device, comprising a counterweight boom (1), wherein conveyor rollers (2) are symmetrically and fixedly connected below the counterweight boom (1), a counterweight belt (3) is slidably connected above the conveyor rollers (2), and a winch (4) is installed above the counterweight boom (1), one end of the winch (4) being fixedly connected to the counterweight belt (3), characterized in that: The upper cover of the winch (4) is equipped with a protective component (5), and the balance boom (1) and the winch (4) are connected by a vibration damping component (6); The protective assembly (5) includes a protective cover (51), which is installed above the winch (4). U-shaped seats (52) are symmetrically and fixedly connected to both ends of the protective cover (51). The U-shaped seats (52) and the balance boom (1) are tightly fitted together. A limit screw (53) is threadedly connected to the middle of the U-shaped seat (52). A cylindrical drive block (54) is fixedly connected to one end of the limit screw (53). A rotating block (55) is fixedly connected to the other end of the limit screw (53). A rubber clamping pad (56) is fixedly connected to the end of the cylindrical drive block (54) away from the limit screw (53). A sealing assembly (57) is provided on one side of the rotating block (55).

2. The tower crane counterweight adjustment device according to claim 1, characterized in that: The surface of the rotating block (55) is surrounded and fixedly connected to an auxiliary rod (58), and the surface of the auxiliary rod (58) is fixedly fitted with a sponge sleeve.

3. The tower crane counterweight adjustment device according to claim 1, characterized in that: The capping assembly (57) includes an external threaded tube seat (571), which is fixedly connected to one side of the U-shaped seat (52). An internal threaded tube seat (572) is threadedly connected to the surface of the external threaded tube seat (571). One end of the internal threaded tube seat (572) is fixedly connected to a cover (573), and the inner wall of the cover (573) fits against the rotating block (55).

4. The tower crane counterweight adjustment device according to claim 3, characterized in that: A rubber sealing ring (574) is fixedly connected to the side of the internal threaded tube seat (572) away from the cover (573).

5. A tower crane counterweight adjustment device according to claim 1, characterized in that: The vibration damping assembly (6) includes a connecting seat (61), which is installed below the winch (4). Connecting bolts (62) are inserted into both sides of the winch (4). The connecting bolts (62) and the connecting seat (61) are threaded together. A damping damper (63) is symmetrically and fixedly connected below the connecting seat (61). A mounting seat (64) is fixedly connected below the damping damper (63). Mounting bolts (65) are symmetrically inserted into one side of the mounting seat (64). The mounting bolts (65) and the balance boom (1) are threaded together.

6. A tower crane counterweight adjustment device according to claim 5, characterized in that: A rubber washer is fitted on one end of the connecting bolt (62), and a rubber washer is also fitted on one end of the mounting bolt (65).

7. A tower crane counterweight adjustment device according to claim 5, characterized in that: A positioning rod (66) is fixedly connected to one end of the mounting base (64), and a positioning groove for cooperating with the positioning rod (66) is provided on the upper part of the balance arm (1).

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