Self-locking anti-swing crane

Abstract

The utility model relates to a crane, specifically, a self-locking type anti-swing crane. Including crane bridge, the top of crane bridge is provided with trolley assembly, trolley assembly includes the car body. The utility model, through scissor type lift drive U type board lower pressure case top surface, with the rigidity clamping force of hook is formed, reduces the swing amplitude of case in the process of hoisting and removes, through the threaded rod of rotation displacement mechanism drives C type board along the length direction of U type board sliding, and the linkage action of inclined chute and cylindrical block drives T type board along U type board width direction synchronous sliding with the help, makes U type board, C type board and T type board common extension form an adjustable pressing plane, flexible adaptation different size case top surface, ensure that pressure is evenly distributed, avoid local stress concentration to can keep stable anti-swing effect under a variety of case specifications, improve the security and adaptability of hoisting operation.

Description

Technical Field

[0001] This utility model relates to a crane, specifically, to a self-locking anti-sway crane. Background Technology

[0002] A crane is a mechanical device that uses steel cables and hooks to vertically lift and horizontally move cargo containers. In the initial stage of lifting or when the trolley is moving, the cargo container will swing like a pendulum due to inertia and the flexible suspension characteristics of the steel cables. This swinging not only threatens the safety of personnel and equipment at the work site, but also makes it difficult to position the cargo container, affecting loading and unloading efficiency and positioning accuracy.

[0003] Existing technologies often rely on skilled operators to suppress swaying through inching operations, or employ complex electronic anti-sway systems to adjust the trolley and lifting actions in real time. However, the former requires highly skilled operators and its effectiveness is unstable; the latter is technically complex and costly, and mainly deals with horizontal swaying. For multi-directional swaying caused by factors such as acceleration and wind during lifting, especially for cargo boxes of different sizes, its adaptability and suppression effect are often limited. Utility Model Content

[0004] The purpose of this invention is to provide a self-locking anti-sway crane to solve the problems mentioned in the background art. Existing technologies employ complex electronic anti-sway systems to adjust the trolley and lifting actions in real time. These systems are technically complex, costly, and primarily address horizontal swaying.

[0005] To address the above problems, the present invention aims to provide a self-locking anti-sway crane, comprising a crane bridge, a trolley assembly at the top of the crane bridge, the trolley assembly including a car body, the car body being rolled on the top of the crane bridge via wheels, a winch fixedly installed on the top of the car body, a hook fixed to the lower end of the steel cable on the winch, a pressing assembly on the lower side of the car body, the pressing assembly including a U-shaped plate, a scissor lift installed between the U-shaped plate and the car body, two expansion assemblies on the U-shaped plate, the expansion assemblies including a C-shaped plate sliding along the length direction of the U-shaped plate and a T-shaped plate sliding along the width direction of the U-shaped plate, the lower sidewalls of the C-shaped plate and the T-shaped plate being on the same plane as the lower sidewall of the U-shaped plate, the expansion assemblies further including a moving mechanism for driving the C-shaped plate and the T-shaped plate to move synchronously, when the C-shaped plate is driven away from the U-shaped plate by the moving mechanism, the T-shaped plate moves away from the U-shaped plate synchronously.

[0006] The U-shaped plate has C-shaped grooves at positions corresponding to the two C-shaped plates, and the C-shaped plates are slidably installed inside the corresponding C-shaped grooves.

[0007] The bottom of the U-shaped plate and the two T-shaped plates are each provided with a T-shaped groove. The T-shaped plates are slidably installed inside the corresponding T-shaped grooves. The top of the T-shaped grooves is provided with a movable groove that extends upward to the top of the U-shaped plate.

[0008] The moving mechanism includes a sliding plate that is slidably disposed on the upper side of the U-shaped plate. The bottom of the sliding plate has an integrally formed slider, and the lower end of the slider passes through the movable groove and is fixedly installed on the upper side wall of the T-shaped plate.

[0009] The top of the slide plate has an inclined groove, and an extension rod is fixedly installed on the top of the U-shaped plate. A cylindrical block is fixedly installed on the other end of the extension rod, and the cylindrical block is slidably installed inside the corresponding inclined groove.

[0010] The moving mechanism further includes a displacement mechanism, which includes a mounting plate fixedly installed on the side wall of the U-shaped plate. Two guide rods are fixedly installed on the upper side of the mounting plate, and a moving block is slidably sleeved on the two guide rods.

[0011] A threaded rod is rotatably mounted on the upper side of the mounting plate. The threaded rod is located between two guide rods. The moving block is threadedly connected to the threaded rod. A connecting rod is fixedly mounted on the top of the moving block. The other end of the connecting rod is fixedly mounted on the upper side wall of the C-shaped plate.

[0012] The inner wall of the C-shaped groove is provided with a guide groove that runs vertically through it. A connecting block is slidably installed inside the guide groove, and the two ends of the connecting block are fixedly connected to the two ends of the C-shaped plate, respectively.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. This self-locking anti-sway crane uses a scissor lift to drive a U-shaped plate to press down on the top surface of the cargo box, forming a rigid clamping force with the hook. This reduces the swaying amplitude of the cargo box during lifting and movement. Simultaneously, the screw rod of the rotary displacement mechanism drives the C-shaped plate to slide along the length of the U-shaped plate, and the linkage between the inclined groove and the cylindrical block drives the T-shaped plate to slide synchronously along the width of the U-shaped plate. This allows the U-shaped plate, C-shaped plate, and T-shaped plate to expand together to form an adjustable pressing plane, flexibly adapting to the top surface of cargo boxes of different sizes. This ensures uniform pressure distribution and avoids local stress concentration, thus maintaining a stable anti-swaying effect under various cargo box specifications, improving the safety and adaptability of lifting operations. 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 of the structure of the trolley component of this utility model; Figure 3 This is a schematic diagram of the overall structure of the pressing component of this utility model; Figure 4 This is one of the partial structural schematic diagrams of the pressing component of this utility model; Figure 5 This is a schematic diagram of the displacement mechanism of this utility model; Figure 6 This is a second partial structural schematic diagram of the pressing component of this utility model; Figure 7 This is the third partial structural schematic diagram of the pressing component of this utility model; Figure 8 This is the fourth partial structural schematic diagram of the pressing component of this utility model; Figure 9 This is a partial structural diagram of the C-shaped plate, T-shaped plate, and moving mechanism of this utility model.

[0015] The meanings of the labels in the diagram are as follows: 1. Crane bridge; 2. Trolley assembly; 21. Car body; 22. Winch; 23. Hook; 24. Pressing assembly; 241. U-shaped plate; 2411. C-shaped groove; 2412. Guide groove; 2413. T-shaped groove; 2414. Movable groove; 242. C-shaped panel; 243. T-shaped panel; 244. Displacement mechanism; 2441. Mounting plate; 2442. Guide rod; 2443. Threaded rod; 2444. Moving block; 2445. Connecting rod; 245. Slide plate; 246. Inclined groove; 247. Extension rod; 248. Cylindrical block; 249. Scissor lift. 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 and Figure 2As shown, the purpose of this embodiment is to provide a self-locking anti-sway crane, including a crane bridge 1. A trolley assembly 2 is provided on the top of the crane bridge 1. The trolley assembly 2 includes a car body 21. The car body 21 is rolled on the top of the crane bridge 1 by wheels. A servo motor for driving the wheels is installed on the car body 21. The servo motor drives the wheels to rotate, so that the car body 21 moves smoothly along the top of the crane bridge 1. A winch 22 is fixedly installed on the top of the car body 21. A hook 23 for lifting cargo boxes is fixed at the lower end of the steel cable on the winch 22.

[0018] To improve the stability of lifting operations, a pressing component 24 is installed on the lower side of the vehicle body 21. The pressing component 24 is used to reduce the swaying amplitude of the cargo box during lifting and movement. The structure of the pressing component 24 is described in detail below, referring to... Figure 3 The pressing component 24 includes a U-shaped plate 241. A scissor lift 249 is installed between the U-shaped plate 241 and the vehicle body 21. The scissor lift 249 is a commercially available mature product used to drive the U-shaped plate 241 to move vertically. A through slot is provided on one side of the U-shaped plate 241. The position and size of the through slot ensure that the hook 23 can pass through smoothly without affecting normal hoisting.

[0019] The anti-sway working principle of the pressing component 24 is as follows: After the hook 23 hooks the cargo box and initially lifts it off the ground, the scissor lift 249 drives the U-shaped plate 241 to press down, so that the bottom surface of the U-shaped plate 241 is in close contact with the top surface of the cargo box. At this time, the cargo box is simultaneously subjected to the upward pulling force of the hook 23 and the downward pressure of the U-shaped plate 241 in the vertical direction, forming a stable clamping state. This clamping force enhances the rigidity between the cargo box and the crane trolley, effectively suppressing the horizontal swaying and the tendency of horizontal swaying. Subsequently, as the winch 22 continues to reel in the cable and lift the cargo box, the scissor lift 249 will synchronously control the U-shaped plate 241 to move upward, always maintaining the pressing force on the cargo box, realizing full-process anti-sway control, and improving the safety and stability of the lifting operation.

[0020] To accommodate cargo boxes of different sizes, the U-shaped plate 241 is equipped with two expansion components. These expansion components are used to adjust the contact area between the pressing component 24 and the top surface of the cargo box. The structure of the expansion components is described in detail below, please refer to... Figures 4-9 The expansion assembly includes a C-shaped plate 242 that slides along the length of the U-shaped plate 241 and a T-shaped plate 243 that slides along the width of the U-shaped plate 241. The lower sidewalls of the C-shaped plate 242 and the T-shaped plate 243 are on the same plane as the lower sidewall of the U-shaped plate 241.

[0021] In the specific structure, C-shaped grooves 2411 are provided on the U-shaped plate 241 at positions corresponding to the two C-shaped plates 242. The C-shaped grooves 2411 extend along the length of the U-shaped plate 241. The C-shaped plates 242 are slidably installed inside the corresponding C-shaped grooves 2411, so that the C-shaped plates 242 can only move horizontally along the inner wall of the C-shaped grooves 2411. In order to enhance the structural strength of the C-shaped plates 242, a guide groove 2412 that runs vertically through the inner wall of the C-shaped grooves 2411 is provided. A connecting block is slidably installed inside the guide groove 2412. The two ends of the connecting block are fixedly connected to the two ends of the C-shaped plates 242, respectively. T-shaped grooves 2413 are provided on the bottom of the U-shaped plate 241 at positions corresponding to the two T-shaped plates 243. The T-shaped grooves 2413 extend along the width of the U-shaped plate 241. The T-shaped plates 243 are slidably installed inside the corresponding T-shaped grooves 2413, so that the T-shaped plates 243 can only move horizontally along the inner wall of the T-shaped grooves 2413.

[0022] The expansion assembly also includes a moving mechanism for driving the C-shaped plate 242 and the T-shaped plate 243 to move synchronously. When the C-shaped plate 242 is driven away from the U-shaped plate 241 by the moving mechanism, the T-shaped plate 243 moves away from the U-shaped plate 241 at the same time. Since the lower sidewalls of the C-shaped plate 242 and the T-shaped plate 243 are on the same plane as the lower sidewall of the U-shaped plate 241, when the C-shaped plate 242 and the T-shaped plate 243 move away from the U-shaped plate 241, the U-shaped plate 241, the C-shaped plate 242 and the T-shaped plate 243 all contact the top surface of the cargo box.

[0023] By adjusting the positions of the C-shaped plate 242 and the T-shaped plate 243, the top surfaces of cargo boxes of different sizes can be flexibly matched to ensure uniform pressure distribution, expand the clamping range, enhance the overall anti-sway effect, and avoid local stress concentration problems caused by insufficient contact area.

[0024] The top of the T-slot 2413 is provided with a movable slot 2414, which extends upward to the top of the U-shaped plate 241. The structure of the moving mechanism is detailed below. The moving mechanism includes a sliding plate 245 that is slidably disposed on the upper side of the U-shaped plate 241. The bottom of the sliding plate 245 is integrally formed with a slider. The lower end of the slider passes through the movable slot 2414 and is fixedly installed on the upper side wall of the T-shaped plate 243. The top of the sliding plate 245 is provided with a sloping slot 246. An extension rod 247 is fixedly installed on the top of the U-shaped plate 241. A cylindrical block 248 is fixedly installed on the other end of the extension rod 247. The cylindrical block 248 is slidably installed inside the corresponding sloping slot 246.

[0025] The moving mechanism also includes a displacement mechanism 244, which includes a mounting plate 2441 fixedly installed on the upper side wall of the U-shaped plate 241. Two guide rods 2442 are fixedly installed on the upper side of the mounting plate 2441. A moving block 2444 is slidably sleeved on the two guide rods 2442. A threaded rod 2443 is rotatably installed on the upper side of the mounting plate 2441. The threaded rod 2443 is located between the two guide rods 2442. The moving block 2444 is threadedly connected to the threaded rod 2443. A connecting rod 2445 is fixedly installed on the top of the moving block 2444. The other end of the connecting rod 2445 is fixedly installed on the upper side wall of the C-shaped plate 242.

[0026] During operation, the operator uses a wrench to rotate the threaded rod 2443. Since the moving block 2444 is threadedly connected to the threaded rod 2443 and its movement is constrained by the guide rod 2442, the rotational motion of the threaded rod 2443 is converted into linear motion of the moving block 2444 along the axis of the guide rod 2442. The moving block 2444, through the connecting rod 2445, drives the C-shaped plate 242 to move synchronously within the C-shaped groove 2411, causing the C-shaped plate 242 to extend outward relative to the U-shaped plate 241. During this process, the extension rod 247 and the cylindrical block 248 fixed to the U-shaped plate 241 move accordingly. The cylindrical block 248 slides within the inclined groove 246. Due to the inclined layout of the inclined groove 246, the horizontal movement of the cylindrical block 248 generates a lateral thrust on the sliding plate 245. This lateral thrust pushes the sliding plate 245 along... The movable groove 2414 moves in the direction of movement, thereby driving the T-shaped plate 243 fixed at its lower part to slide outward in the T-shaped groove 2413. Through this linkage mechanism, rotating a single threaded rod 2443 can simultaneously drive the C-shaped plate 242 to move outward along the length direction and the T-shaped plate 243 along the width direction, thereby expanding the contact area of ​​the pressing component 24. Finally, the U-shaped plate 241, the two C-shaped plates 242 and the two T-shaped plates 243 together form an expanded pressing plane, which can adapt to the top contour of larger-sized cargo boxes. Through continuous clamping force, the cargo box is effectively clamped and fixed, improving the anti-sway effect. During the entire adjustment process, the self-locking characteristic of the threaded rod 2443 can ensure that the C-shaped plate 242 and the T-shaped plate 243 remain stable in any position and will not retract due to external force.

[0027] The linkage design of C-shaped plate 242 and T-shaped plate 243 not only enables rapid adjustment of the contact area, but also ensures stable clamping force under different cargo box sizes. This design improves the crane's adaptability to different working conditions and reduces the adjustment time required due to changes in cargo box size. Ultimately, this adjustable structure enhances the overall applicability and reliability of the pressing assembly 24, enabling the crane to cope with diverse cargo box specifications and achieve efficient and stable anti-sway control under various operating conditions.

[0028] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A self-locking anti-sway crane, comprising a crane bridge (1), a trolley assembly (2) being provided on the top of the crane bridge (1), the trolley assembly (2) comprising a car body (21), the car body (21) being mounted on the top of the crane bridge (1) by means of wheels, a winch (22) being fixedly installed on the top of the car body (21), and a hook (23) being fixed at the lower end of a steel cable on the winch (22), characterized in that: A pressing assembly (24) is provided on the lower side of the vehicle body (21). The pressing assembly (24) includes a U-shaped plate (241). A scissor lift (249) is installed between the U-shaped plate (241) and the vehicle body (21). Two expansion assemblies are provided on the U-shaped plate (241). The expansion assembly includes a C-shaped plate (242) that slides along the length direction of the U-shaped plate (241) and a T-shaped plate (243) that slides along the width direction of the U-shaped plate (241). The lower sidewalls of the C-shaped plate (242) and the T-shaped plate (243) are on the same plane as the lower sidewall of the U-shaped plate (241). The expansion assembly also includes a moving mechanism for driving the C-shaped plate (242) and the T-shaped plate (243) to move synchronously. When the C-shaped plate (242) is driven away from the U-shaped plate (241) by the moving mechanism, the T-shaped plate (243) moves away from the U-shaped plate (241) synchronously.

2. The self-locking anti-sway crane according to claim 1, characterized in that: C-shaped grooves (2411) are provided on the U-shaped plate (241) at positions corresponding to the two C-shaped plates (242), and the C-shaped plates (242) are slidably installed inside the corresponding C-shaped grooves (2411).

3. The self-locking anti-sway crane according to claim 1, characterized in that: The bottom of the U-shaped plate (241) is provided with T-slots (2413) at positions corresponding to the two T-shaped plates (243). The T-shaped plates (243) are slidably installed inside the corresponding T-slots (2413). The top of the T-slots (2413) is provided with movable grooves (2414), which extend upward to the top of the U-shaped plate (241).

4. The self-locking anti-sway crane according to claim 3, characterized in that: The moving mechanism includes a sliding plate (245) that is slidably disposed on the upper side of the U-shaped plate (241). The bottom of the sliding plate (245) is integrally formed with a slider, the lower end of which passes through the movable groove (2414) and is fixedly installed on the upper side wall of the T-shaped plate (243).

5. The self-locking anti-sway crane according to claim 4, characterized in that: The top of the slide plate (245) is provided with a sloping groove (246), and the top of the U-shaped plate (241) is fixedly installed with an extension rod (247). The other end of the extension rod (247) is fixedly installed with a cylindrical block (248), and the cylindrical block (248) is slidably installed inside the corresponding sloping groove (246).

6. The self-locking anti-sway crane according to claim 1, characterized in that: The moving mechanism further includes a displacement mechanism (244), which includes a mounting plate (2441) fixedly installed on the upper side wall of the U-shaped plate (241). Two guide rods (2442) are fixedly installed on the upper side of the mounting plate (2441), and a moving block (2444) is slidably sleeved on the two guide rods (2442).

7. The self-locking anti-sway crane according to claim 6, characterized in that: A threaded rod (2443) is rotatably mounted on the upper side of the mounting plate (2441). The threaded rod (2443) is located between two guide rods (2442). The moving block (2444) is threadedly connected to the threaded rod (2443). A connecting rod (2445) is fixedly mounted on the top of the moving block (2444). The other end of the connecting rod (2445) is fixedly mounted on the upper side wall of the C-shaped plate (242).

8. The self-locking anti-sway crane according to claim 2, characterized in that: The inner wall of the C-shaped groove (2411) is provided with a guide groove (2412) that runs vertically through it. A connecting block is slidably installed inside the guide groove (2412), and the two ends of the connecting block are fixedly connected to the two ends of the C-shaped plate (242).

Images