Flexible multi-girder crane

Abstract

The utility model relates to the field of flexible cranes, and discloses a flexible multi-girder crane which comprises a support, an end beam is fixedly connected to the top of the support, a cross beam is fixedly connected to the lower surface of the end beam, a sliding frame is slidably connected to the interior of the cross beam, a fixing assembly is arranged on the lower surface of the sliding frame, and a girder body is arranged on the lower surface of the cross beam. An electric hoist is slidably connected to the interior of the main beam body, a lifting hook is fixedly connected to the lower surface of the electric hoist, and a buffering assembly is arranged at the bottom of the support; the fixing assembly comprises a connecting frame. The sliding rod is downwards extruded through the handle, the sliding rod drives the connecting block to move downwards, the rotating strip shrinks, the fixing column slides to extrude the first spring, the side wall of the rotating block is attached to one side of the connecting frame by rotating the rotating block, the handle is loosened, the rotating strip is unfolded and attached to the other side of the connecting frame through rebounding of the first spring, and the rapid fixing effect is achieved. Through the structure, the disassembly and assembly efficiency of the equipment is improved.

Description

Technical Field

[0001] This utility model relates to the field of flexible cranes, and more particularly to flexible multi-beam cranes. Background Technology

[0002] In the fields of industrial production and cargo handling, flexible multi-girder cranes have become indispensable lifting equipment in many places due to their high efficiency and flexibility. By working together with multiple main beams, they can distribute the load more evenly compared to traditional cranes, improving the overall lifting capacity and stability, and are widely used in heavy object lifting scenarios such as ports and large factories.

[0003] Traditional flexible multi-girder cranes typically employ rigid connections to fix the main girder to the bridge structure, using welding or bolting to connect the main girder to other components. Their hoisting and traveling mechanisms largely rely on conventional mechanical transmissions such as gears and chains. For shock absorption, simple rubber pads or spring devices are generally used at the bottom of the outriggers, providing limited vibration damping. During operation, operators control the electrical system to drive motors that power various mechanisms, enabling the lifting and movement of heavy loads.

[0004] Existing flexible multi-girder cranes require a large number of tools for welding or bolting operations when installing and dismantling the main beams. The process is cumbersome and time-consuming, which affects the efficiency and flexibility of the crane. Therefore, a flexible multi-girder crane is proposed to solve the above problems. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a flexible multi-beam crane, which aims to improve the problem in the prior art that the installation and dismantling of the main beams requires a large number of tools for welding or bolting operations, which is cumbersome and time-consuming, affecting the efficiency and flexibility of the crane.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A flexible multi-girder crane includes a support frame, an end beam fixedly connected to the top of the support frame, a crossbeam fixedly connected to the lower surface of the end beam, a sliding frame slidably connected inside the crossbeam, a fixing component provided on the lower surface of the sliding frame, a main beam body provided on the lower surface of the crossbeam, an electric hoist slidably connected inside the main beam body, a hook fixedly connected to the lower surface of the electric hoist, and a buffer component provided at the bottom of the support frame.

[0008] The fixing component includes a connecting frame, the upper surface of which is fixedly connected to the lower surface of the sliding frame. A fixing sleeve is slidably connected inside the connecting frame, and a sliding rod is slidably connected inside the fixing sleeve. A handle is fixedly connected to the upper end of the sliding rod, and a fixing post is fixedly connected to the bottom of the sliding rod. A spring is sleeved on the side wall of the fixing post, and a connecting block is fixedly connected to the side wall of the sliding rod. A rotating bar is rotatably connected to the side wall of the connecting block.

[0009] As a further description of the above technical solution:

[0010] The buffer assembly includes a rubber damper, and a base plate is provided at the bottom of the bracket. The lower surface of the rubber damper is fixedly connected to the upper surface of the base plate, and the upper surface of the rubber damper is fixedly connected to the bottom of the bracket.

[0011] As a further description of the above technical solution:

[0012] The side wall of the main beam is slidably connected to the inside of the connecting frame, the side wall of the fixed sleeve is slidably connected to the inside of the main beam, the side wall of the fixed sleeve is threadedly connected to a rotating block, the side wall of the rotating block is attached to one side of the connecting frame, the side wall of the connecting block is slidably connected to the inside of the fixed sleeve, and the side wall of the rotating bar is attached to the other side of the connecting frame when the rotating bar is unfolded.

[0013] As a further description of the above technical solution:

[0014] One end of the spring is fixedly connected inside the fixed sleeve, and the other end of the spring is fixedly connected to the side wall of the slide rod. The side wall of the fixed column is slidably connected inside the fixed sleeve.

[0015] As a further description of the above technical solution:

[0016] A fixing frame is fixedly connected to the upper surface of the base plate, and a fixing rod is fixedly connected inside the fixing frame.

[0017] As a further description of the above technical solution:

[0018] The fixed rod is slidably connected to a slider on its side wall, and a spring is sleeved on the side wall of the fixed rod.

[0019] As a further description of the above technical solution:

[0020] The two ends of the spring are fixedly connected between the sliders, and a connecting plate is rotatably connected to the upper surface of the sliders.

[0021] As a further description of the above technical solution:

[0022] One end of the connecting plate is rotatably connected to the bottom of the bracket.

[0023] This utility model has the following beneficial effects:

[0024] 1. In this utility model, the main beam is slid into the connecting frame, then the handle is gripped and the sliding rod is pressed downwards. The sliding rod drives the connecting block to move downwards, and the rotating bar retracts as the connecting block descends. At the same time, the fixed column slides and compresses the spring. Then, the fixed sleeve is inserted into the main beam. By rotating the rotating block, its side wall is made to fit against one side of the connecting frame. Then, the handle is released, and the spring pushes the sliding rod upwards, allowing the connecting block to slide upwards and the rotating bar to unfold and fit against the other side of the connecting frame, achieving a rapid fixing effect. This solves the problem that some flexible multi-main-beam cranes require a large number of tools for welding or bolting when installing and disassembling the main beam, which is cumbersome and time-consuming, affecting the efficiency and flexibility of the crane. The above structure improves the efficiency of equipment assembly and disassembly.

[0025] 2. In this utility model, when the crane operates and generates vibration or impact, the rubber damper utilizes the elasticity and damping characteristics of the rubber material to absorb and dissipate part of the energy. At the same time, the connecting plate drives the slider to slide on the fixed rod, and the second spring is compressed, further absorbing and buffering the impact force. The elastic deformation of the second spring converts the impact force into the elastic potential energy of the spring, and then gradually releases it, thereby reducing the impact force transmitted to the ground and protecting the crane and the ground foundation. Attached Figure Description

[0026] Figure 1 This is a three-dimensional schematic diagram of the flexible multi-beam crane proposed in this utility model;

[0027] Figure 2 This is a schematic diagram of the main beam of the flexible multi-beam crane proposed in this utility model;

[0028] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0029] Figure 4 This is a schematic diagram of the structure of the fixing sleeve of the flexible multi-beam crane proposed in this utility model;

[0030] Figure 5 This is a schematic diagram of the bottom structure of the support of the flexible multi-beam crane proposed in this utility model.

[0031] Legend:

[0032] 1. Support frame; 2. End beam; 3. Crossbeam; 4. Main beam; 5. Electric hoist; 6. Hook; 7. Sliding frame; 8. Connecting frame; 9. Fixing sleeve; 10. Sliding rod; 11. Handle; 12. Connecting block; 13. Rotating bar; 14. Fixing column; 15. Spring 1; 16. Rotating block; 17. Base plate; 18. Rubber damper; 19. Fixing frame; 20. Fixing rod; 21. Sliding block; 22. Spring 2; 23. Connecting plate. Detailed Implementation

[0033] 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.

[0034] Reference Figures 1-4This utility model provides an embodiment of a flexible multi-beam crane, including a support 1. An end beam 2 is fixedly connected to the top of the support 1, connecting a crossbeam 3 and the support 1. A crossbeam 3 is fixedly connected to the lower surface of the end beam 2. A sliding frame 7 is slidably connected inside the crossbeam 3, providing a horizontal sliding track for the sliding frame 7, allowing the sliding frame 7 to move left and right on the crossbeam 3, thereby adjusting the horizontal position of the main beam 4. A fixing component is provided on the lower surface of the sliding frame 7, including a connecting frame 8. The upper surface of the connecting frame 8 is fixedly connected to the lower surface of the sliding frame 7, providing space for the installation and sliding of a fixing sleeve 9 and the main beam 4, serving as a connection and support. A fixing sleeve 9 is slidably connected inside the connecting frame 8. The fixed sleeve 9 is inserted into the main beam 4 and fixed to the connecting frame 8 via the rotating block 16, thus fixing the main beam 4. A sliding rod 10 is slidably connected inside the fixed sleeve 9. A handle 11 is fixedly connected to the upper end of the sliding rod 10, and a fixed post 14 is fixedly connected to the bottom of the sliding rod 10. A spring 15 is sleeved on the side wall of the fixed post 14. The fixed post 14, under the action of the spring 15, works with the rotating bar 13 to clamp and fix the main beam 4. A connecting block 12 is fixedly connected to the side wall of the sliding rod 10, and a rotating bar 13 is rotatably connected to the side wall of the connecting block 12. The connecting block 12 connects the sliding rod 10 and the rotating bar 13, causing the rotating bar 13 to move up and down and rotate, thus expanding and contracting the rotating bar 13. When the rotating bar 13 is expanded, its side wall adheres to the other side of the connecting frame 8. This device, used in conjunction with the fixing sleeve 9 and rotating block 16, clamps and secures the main beam 4 from both sides when fixing the main beam 4, ensuring its firm fixation. The main beam 4 is mounted on the lower surface of the crossbeam 3. The multi-main-beam design under the crossbeam 3 allows for flexible adjustment of the main beam's position according to actual lifting needs, facilitating lifting operations of heavy objects at different locations. The main beam 4 supports the electric hoist 5 and the lifted load, while also providing a sliding track for the electric hoist 5, enabling it to move back and forth on the main beam 4 to lift heavy objects at different positions. The electric hoist 5 is slidably connected inside the main beam 4. The electric hoist 5 uses a wire rope and hook 6 to lift and lower the load. The hook 6 is fixedly connected to the lower surface of the electric hoist 5. The hook 6 is used to hook heavy objects. The buffer assembly is used to absorb the vibration and impact generated during the operation of the crane, reducing damage to the ground foundation, improving the stability and safety of the crane operation, reducing equipment wear, and extending service life. The bottom of the support 1 is equipped with a buffer assembly. The side wall of the main beam 4 is slidably connected to the inside of the connecting frame 8. The side wall of the fixing sleeve 9 is slidably connected to the inside of the main beam 4. The side wall of the fixing sleeve 9 is threadedly connected to a rotating block 16. The side wall of the rotating block 16 is attached to one side of the connecting frame 8. The side wall of the connecting block 12 is slidably connected to the inside of the fixing sleeve 9. When the rotating bar 13 is unfolded, its side wall is attached to the other side of the connecting frame 8. The connecting frame 8, together with the fixing sleeve 9, rotating block 16, sliding rod 10, connecting block 12, and rotating bar 13, performs the operation of fixing the main beam 4.This achieves the effect of rapid installation and disassembly of the main beam 4. After the fixing sleeve 9 is inserted into the main beam 4, it is fixed to the connecting frame 8 by rotating the rotating block 16. At the same time, the sliding rod 10, under the action of the spring 15, drives the rotating bar 13 to unfold, clamping the main beam 4 from both sides, ensuring that the main beam 4 is firmly fixed and easy to operate. One end of the spring 15 is fixedly connected to the inside of the fixing sleeve 9, and the other end of the spring 15 is fixedly connected to the side wall of the sliding rod 10. The side wall of the fixing column 14 is slidably connected to the inside of the fixing sleeve 9.

[0035] Reference Figure 1 and Figure 5 The buffer assembly includes a rubber damper 18, which absorbs and dissipates the vibration and impact generated during crane operation. Through its elastic deformation and internal damping characteristics, it converts mechanical energy into heat energy, effectively reducing vibration amplitude and impact intensity, thus mitigating vibration, protecting the crane structure, and improving operational stability. The rubber damper 18 is made of rubber, and its function is to absorb energy using the good elasticity and damping properties of rubber, which is common knowledge and will not be elaborated further here. A base plate 17 is provided at the bottom of the support 1, which is used to absorb the rubber damper. The rubber damper 18 and the mounting bracket 19 provide a stable mounting base, ensuring a stable connection between the entire buffer assembly and the ground. The lower surface of the rubber damper 18 is fixedly connected to the upper surface of the base plate 17, and the upper surface of the rubber damper 18 is fixedly connected to the bottom of the bracket 1. This connection method allows the rubber damper 18 to effectively buffer vibrations and impacts between the bracket 1 and the base plate 17. The mounting bracket 19 is fixedly connected to the upper surface of the base plate 17. The mounting bracket 19 supports the fixing rod 20, and the fixing rod 20 is fixedly connected inside the mounting bracket 19. The fixing rod 20 is used for the slider. 21 provides a sliding track, allowing slider 21 to slide along the axial direction of fixed rod 20. Slider 21 is slidably connected to the side wall of fixed rod 20. Slider 21 slides on fixed rod 20, cooperating with spring 22 and connecting plate 23 for buffering movement. Spring 22 is sleeved on the side wall of fixed rod 20. Spring 22 is used to undergo elastic deformation when slider 21 slides, storing and releasing energy, and using its own elastic force to offset and reduce impact force, further enhancing the buffering effect. Both ends of spring 22 are fixedly connected between slider 21. Through this connection method... The second spring 22 can work in conjunction with the slider 21 to effectively buffer the impact force. The upper surface of the slider 21 is rotatably connected to the connecting plate 23, which is used to connect the slider 21 and the bottom of the bracket 1. The sliding motion of the slider 21 is converted into a buffering force transmitted to the bottom of the bracket 1. One end of the connecting plate 23 is rotatably connected to the bottom of the bracket 1. Through the rotatable connection with the bottom of the bracket 1, the connecting plate 23 can change its angle during the buffering process. Together with the slider 21 and the second spring 22, the impact force is evenly transmitted to the bottom of the bracket 1, improving the buffering performance and stability of the buffer assembly.

[0036] Working principle: When the crane is in operation, the sliding frame 7 slides inside the crossbeam 3, driving the connected main beam 4 to move horizontally, thereby moving the electric hoist 5 and hook 6 above the load to be lifted. The electric hoist 5 slides inside the main beam 4, driving the drum to rotate via an internal motor, causing the wire rope to wind or unwind, which in turn drives the hook 6 to lift vertically. After the hook 6 descends to the appropriate position to hook the load, the electric hoist 5 lifts the hook 6 to raise the load, thus completing the lifting operation. When installing the main beam 4, first slide the main beam 4 into the connecting frame 8. Then, the operator holds the handle 11 and pushes down the sliding rod 10. The sliding rod 10 drives the connecting block 12 to move downward. The rotating bar 13 retracts as the connecting block 12 descends. At the same time, the fixed column 14 slides inside the fixed sleeve 9 and compresses the spring 15. Then, the fixed sleeve 9 is inserted into the main beam 4, and the rotating block 16 is rotated so that its side wall fits against one side of the connecting frame 8. The handle 11 is then released. Spring 15 rebounds and pushes slide bar 10 upward, connecting block 12 rises accordingly, rotating bar 13 unfolds and fits against the other side of connecting frame 8, realizing the quick fixation of main beam 4 and improving installation efficiency. When disassembly is required, reverse the operation, rotate rotating block 16 to make it detach from connecting frame 8, grasp handle 11 and squeeze slide bar 10 downward, rotating bar 13 retracts, and fixing sleeve 9 can be pulled out from inside main beam 4, releasing the fixation of main beam 4 and improving disassembly efficiency. When the crane operates and generates vibration and impact, rubber damper 18 uses the elasticity and damping characteristics of rubber material to absorb and dissipate part of the vibration and impact energy. The impact force causes bracket 1 to displace, and through connecting plate 23, slider 21 slides on fixed rod 20. Spring 22 is compressed, and the elastic deformation of spring 22 converts the impact force into elastic potential energy, which is then gradually released to further absorb and buffer the impact force, reduce the impact force transmitted to the ground, and protect the crane and ground foundation.

[0037] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A flexible multi-beam crane, including a support frame (1), characterized in that: The support (1) is fixedly connected to the top of the end beam (2), the lower surface of the end beam (2) is fixedly connected to the cross beam (3), the cross beam (3) is slidably connected to the inside of the sliding frame (7), the lower surface of the sliding frame (7) is provided with a fixing component, the lower surface of the cross beam (3) is provided with a main beam body (4), the main beam body (4) is slidably connected to the inside of the main beam body (4), the lower surface of the electric hoist (5) is fixedly connected to the hook (6), and the bottom of the support (1) is provided with a buffer component. The fixing component includes a connecting frame (8), the upper surface of which is fixedly connected to the lower surface of the sliding frame (7). A fixing sleeve (9) is slidably connected inside the connecting frame (8). A sliding rod (10) is slidably connected inside the fixing sleeve (9). A handle (11) is fixedly connected to the upper end of the sliding rod (10). A fixing column (14) is fixedly connected to the bottom of the sliding rod (10). A spring (15) is sleeved on the side wall of the fixing column (14). A connecting block (12) is fixedly connected to the side wall of the sliding rod (10). A rotating bar (13) is rotatably connected to the side wall of the connecting block (12).

2. The flexible multi-girder crane according to claim 1, characterized in that: The buffer assembly includes a rubber damper (18), and a base plate (17) is provided at the bottom of the bracket (1). The lower surface of the rubber damper (18) is fixedly connected to the upper surface of the base plate (17), and the upper surface of the rubber damper (18) is fixedly connected to the bottom of the bracket (1).

3. The flexible multi-girder crane according to claim 1, characterized in that: The side wall of the main beam (4) is slidably connected to the inside of the connecting frame (8), the side wall of the fixing sleeve (9) is slidably connected to the inside of the main beam (4), the side wall of the fixing sleeve (9) is threadedly connected to a rotating block (16), the side wall of the rotating block (16) is attached to one side of the connecting frame (8), the side wall of the connecting block (12) is slidably connected to the inside of the fixing sleeve (9), and the side wall of the rotating bar (13) is attached to the other side of the connecting frame (8) when it is unfolded.

4. The flexible multi-girder crane according to claim 1, characterized in that: One end of the spring (15) is fixedly connected inside the fixed sleeve (9), and the other end of the spring (15) is fixedly connected to the side wall of the slide rod (10). The side wall of the fixed column (14) is slidably connected inside the fixed sleeve (9).

5. The flexible multi-girder crane according to claim 2, characterized in that: A fixing frame (19) is fixedly connected to the upper surface of the base plate (17), and a fixing rod (20) is fixedly connected inside the fixing frame (19).

6. The flexible multi-girder crane according to claim 5, characterized in that: The fixed rod (20) is slidably connected to a slider (21) on its side wall, and a spring (22) is sleeved on the side wall of the fixed rod (20).

7. The flexible multi-girder crane according to claim 6, characterized in that: The two ends of the spring (22) are fixedly connected between the slider (21), and the upper surface of the slider (21) is rotatably connected to the connecting plate (23).

8. The flexible multi-girder crane according to claim 7, characterized in that: One end of the connecting plate (23) is rotatably connected to the bottom of the bracket (1).

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