Telescopic heavy duty crane

Abstract

The utility model discloses a telescopic heavy -duty crane belongs to crane field, including support seat cylinder, the inside slide coupling of support seat cylinder has the sliding arm, the outer wall fixed connection of support seat cylinder has electric push rod, the movable end of electric push rod with the outer wall fixed connection of sliding arm, the outer wall rotationally connected of support seat cylinder has first gear, the utility model discloses through electric push rod, sliding arm, first gear, first swing arm, connecting block, damping damper, first support block, first spring and the setting of first rack, in this process, damping damper starts to play a role, can significantly reduce the vibration and impact force produced when mechanical operation, improve the stability of overall structure, at the same time, the first support block is under the stress condition through the friction layer and enhances the tenacity of contact surface, and the elastic support of cooperation first spring ensures that the equipment has higher security and reliability when bearing heavy goods.

Description

Technical Field

[0001] This utility model relates to the field of crane technology, specifically a telescopic heavy-duty crane. Background Technology

[0002] A crane is a mechanical device used to move heavy objects vertically or horizontally. It is widely used in construction, manufacturing, ports and logistics. It lifts, lowers or moves heavy objects through mechanical structures (such as booms, wire ropes and pulley blocks) and power systems (electric, hydraulic or internal combustion engine driven).

[0003] An investigation revealed that a Chinese utility model patent discloses a telescopic light crane (publication number: CN222665240U), comprising a support column, a telescopic drive mechanism, and a steering drive mechanism. The support column has symmetrically distributed supports fixedly connected to its upper end, a rotating shaft rotatably connected between the supports, a steering seat fixedly connected to the middle of the rotating shaft, a fixed cylinder fixedly connected to the right end of the steering seat, a sliding arm slidably connected to the right end of the fixed cylinder, symmetrically distributed auxiliary seats fixedly connected to the right end of the sliding arm and the left end of the upper surface of the fixed cylinder, auxiliary wheels rotatably connected between the auxiliary seats, an electric hoist installed at the left end of the support column, the auxiliary wheels being installed in conjunction with the electric hoist's cable, a hook fixedly connected to the lower end of the cable, and a turntable fixedly connected to the lower end of the support column.

[0004] Although the aforementioned patent enables electric telescopic adjustment and electric rotation of the boom compared to existing technologies, effectively expanding the lifting application range of telescopic light cranes, some problems still exist in actual use. For example, it cannot provide better overall stability to the crane based on the height of the lifted goods, resulting in the overall stability of the crane being affected when lifting heavy goods because the weight is distributed at a high position. Especially during the lifting process, if the weight of the goods is large and the height is high, the center of gravity of the crane will rise accordingly, further increasing the risk of overturning.

[0005] Therefore, this utility model provides a telescopic heavy-duty crane to solve the above problems. Utility Model Content

[0006] (a) Technical problems to be solved

[0007] This utility model provides a telescopic heavy-duty crane, which aims to solve the problems mentioned in the background art.

[0008] (II) Technical Solution

[0009] To achieve the above objectives, this utility model provides the following technical solution: a telescopic heavy-duty crane, including a support cylinder, a sliding arm slidably connected inside the support cylinder, an electric push rod fixedly connected to the outer wall of the support cylinder, the movable end of the electric push rod being fixedly connected to the outer wall of the sliding arm, a first gear rotatably connected to the outer wall of the support cylinder, a first swing arm fixedly connected to the outer surface of the first gear, a connecting block hinged to the outer wall of the first swing arm away from the first gear, a vibration damper fixedly connected to the bottom of the connecting block, a first support block fixedly connected to the bottom of the vibration damper, and a first rack meshing with the first gear fixedly connected to the outer surface of the first swing arm.

[0010] As a preferred technical solution of this application, a first spring is fixedly connected to the top of the inner wall of the vibration damper, and the end of the first spring away from the top of the inner wall of the vibration damper is fixedly connected to the bottom of the inner wall of the vibration damper.

[0011] As a preferred technical solution of this application, a connecting rod is slidably connected to the outer wall of the support base, and an overlapping block is fixedly connected to the top end of the connecting rod.

[0012] As a preferred technical solution of this application, a second support block is fixedly connected to the end of the connecting rod away from the overlapping block, and a friction layer is provided at the bottom of both the second support block and the first support block.

[0013] As a preferred technical solution of this application, the bottom of the overlapping block is fixedly connected to a second spring on the outer ring of the connecting rod, and the end of the second spring away from the overlapping block is fixedly connected to the outer wall of the support base.

[0014] As a preferred technical solution of this application, the outer wall of the support base is rotatably connected to a second swing arm for pressing the overlapping block, and the outer wall of the second swing arm is arc-shaped.

[0015] As a preferred technical solution of this application, a second gear is fixedly connected to the outer wall of the second swing arm, and a second rack that meshes with the second gear is fixedly connected to the outer wall of the first rack.

[0016] (III) Beneficial Effects

[0017] This invention utilizes an electric push rod, a sliding arm, a first gear, a first swing arm, a connecting block, a vibration damper, a first support block, a first spring, and a first rack. When the electric push rod drives the sliding arm upward, the first gear begins to rotate, effectively transmitting the force to the connecting block. During this process, the vibration damper comes into play, significantly reducing the vibration and impact forces generated during mechanical operation and improving the overall structural stability. Simultaneously, under stress, the first support block enhances its gripping force with the contact surface through a friction layer, which, combined with the elastic support of the first spring, ensures higher safety and reliability of the equipment when bearing heavy loads. Attached Figure Description

[0018] Figure 1 This is a structural schematic diagram of a telescopic heavy-duty crane;

[0019] Figure 2 This is a schematic diagram of the structure of the first support block and the second support block in a telescopic heavy-duty crane;

[0020] Figure 3 This is a schematic diagram of the sliding arm in a telescopic heavy-duty crane;

[0021] Figure 4 for Figure 2 A magnified structural diagram at point A;

[0022] Figure 5 for Figure 2 A magnified structural diagram at point B;

[0023] Figure 6 for Figure 3 A magnified structural diagram at point C.

[0024] In the picture:

[0025] 1. Support base; 2. Sliding arm; 3. Electric push rod; 4. First gear; 5. First swing arm; 6. Connecting block; 7. Vibration damper; 8. First support block; 9. First spring; 10. First rack; 11. Connecting rod; 12. Overlapping block; 13. Second support block; 14. Second spring; 15. Second swing arm; 16. Second gear; 17. Second rack. Detailed Implementation

[0026] 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.

[0027] This utility model provides a telescopic heavy-duty crane, such as Figure 1-6 As shown, the crane includes a support cylinder 1, a sliding arm 2 is slidably connected inside the support cylinder 1, an electric push rod 3 is fixedly connected to the outer wall of the support cylinder 1, the movable end of the electric push rod 3 is fixedly connected to the outer wall of the sliding arm 2, a first gear 4 is rotatably connected to the outer wall of the support cylinder 1, a first swing arm 5 is fixedly connected to the outer surface of the first gear 4, a connecting block 6 is hinged to the outer wall of the first swing arm 5 away from the first gear 4, a vibration damper 7 is fixedly connected to the bottom of the connecting block 6, a first support block 8 is fixedly connected to the bottom of the vibration damper 7, and a first rack 10 that meshes with the first gear 4 is fixedly connected to the outer surface of the first swing arm 5.

[0028] A first spring 9 is fixedly connected to the top of the inner wall of the vibration damper 7, and the end of the first spring 9 away from the top of the inner wall of the vibration damper 7 is fixedly connected to the bottom of the inner wall of the vibration damper 7.

[0029] Specifically, when it is necessary to increase the height of the lifted goods, the electric push rod 3 is first used to drive the sliding arm 2 to move upward. The rise of the sliding arm 2 will drive the first rack 10 to move synchronously. The movement of the first rack 10 will drive the first gear 4 meshing with it to rotate. The rotational motion of the first gear 4 is further converted into the swinging motion of the first swing arm 5. The swinging motion of the first swing arm 5 is transmitted to the vibration damper 7 through the connecting block 6. The first spring 9 inside the vibration damper 7 will then extend and retract, thereby effectively absorbing and mitigating the vibration energy generated during the swinging process, and providing this buffer energy to the first support. Block 8, after the first support block 8 contacts the ground, can form a stable support structure, thereby effectively providing stability for the device during the hoisting process. This prevents the device's center of gravity from rising and causing the risk of overturning when lifting heavy loads, ensuring the safety and reliability of the hoisting process. Through this series of linkage mechanisms, the sliding arm 2 can maintain an efficient and stable working state while increasing its height. By optimizing the coordination between various components, the overall working efficiency is further improved, avoiding instability caused by changes in height, and providing a reliable hoisting solution for various complex working conditions.

[0030] A connecting rod 11 is slidably connected to the outer wall of the support base 1, and an overlapping block 12 is fixedly connected to the top end of the connecting rod 11.

[0031] The end of the connecting rod 11 away from the overlapping block 12 is fixedly connected to the second support block 13, and the bottom of both the second support block 13 and the first support block 8 are provided with a friction layer.

[0032] The bottom of the overlapping block 12 is fixedly connected to the outer ring of the connecting rod 11 with a second spring 14. The end of the second spring 14 away from the overlapping block 12 is fixedly connected to the outer wall of the support cylinder 1.

[0033] The outer wall of the support base 1 is rotatably connected to a second swing arm 15 for pressing the overlapping block 12, and the outer wall of the second swing arm 15 is arc-shaped.

[0034] The outer wall of the second swing arm 15 is fixedly connected to the second gear 16, and the outer wall of the first rack 10 is fixedly connected to the second rack 17 that meshes with the second gear 16.

[0035] Specifically, when the first rack 10 moves upward, the second rack 17 connected to it moves upward synchronously, causing the second gear 16 meshing with the second rack 17 to rotate. The rotation of the second gear 16 further drives the second swing arm 15 to swing. The arc-shaped outer wall design of the second swing arm 15 can better fit the surface of the overlapping block 12, thereby applying a stable downward pressure to the overlapping block 12 during the swing. As the overlapping block 12 is under pressure, the connecting rod 11 slides along the outer wall of the support base 1, causing the second support block 13 to contact the ground, further providing better stability. At the same time, it compresses the second spring 14. The elastic force of the second spring 14 is transmitted to the second support block 13 through the connecting rod 11, causing the second support block to... The first support block 13 works in conjunction with the first support block 8 to enhance the stability of the bottom support of the device. This linkage mechanism not only improves the overall structure's anti-overturning ability but also further optimizes the vibration reduction effect during heavy-duty hoisting, ensuring that the crane can maintain efficient and safe operation under different working conditions. In addition, the friction layer design effectively increases the friction between the first support block 8 and the second support block 13 and the ground, avoiding slippage or displacement caused by external factors, and providing additional safety for the entire device. Furthermore, the design also takes into account adaptability to different ground conditions. At the same time, the structure of the first support block 8 and the second support block 13 has been optimized so that they can still maintain good durability and stability when subjected to greater pressure, extending their service life.

[0036] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A telescopic heavy-duty crane, comprising a support base (1), characterized in that: The support cylinder (1) is internally slidably connected to a sliding arm (2), and the outer wall of the support cylinder (1) is fixedly connected to an electric push rod (3). The movable end of the electric push rod (3) is fixedly connected to the outer wall of the sliding arm (2). The outer wall of the support cylinder (1) is rotatably connected to a first gear (4). The outer surface of the first gear (4) is fixedly connected to a first swing arm (5). The outer wall of the first swing arm (5) is hinged to a connecting block (6) away from the first gear (4). The bottom of the connecting block (6) is fixedly connected to a vibration damper (7). The bottom of the vibration damper (7) is fixedly connected to a first support block (8). The outer surface of the first swing arm (5) is fixedly connected to a first rack (10) that meshes with the first gear (4).

2. The telescopic heavy-duty crane according to claim 1, characterized in that: A first spring (9) is fixedly connected to the top of the inner wall of the damper (7), and one end of the first spring (9) away from the top of the inner wall of the damper (7) is fixedly connected to the bottom of the inner wall of the damper (7).

3. A telescopic heavy-duty crane according to claim 1, characterized in that: The outer wall of the support cylinder (1) is slidably connected to a connecting rod (11), and the top end of the connecting rod (11) is fixedly connected to an overlapping block (12).

4. A telescopic heavy-duty crane according to claim 3, characterized in that: The end of the connecting rod (11) away from the overlapping block (12) is fixedly connected to a second support block (13), and the bottom of the second support block (13) and the first support block (8) are both provided with a friction layer.

5. A telescopic heavy-duty crane according to claim 3, characterized in that: The bottom of the overlapping block (12) is fixedly connected to the outer ring of the connecting rod (11) with a second spring (14), and the end of the second spring (14) away from the overlapping block (12) is fixedly connected to the outer wall of the support cylinder (1).

6. A telescopic heavy-duty crane according to claim 3, characterized in that: The outer wall of the support cylinder (1) is rotatably connected to a second swing arm (15) for pressing the overlapping block (12), and the outer wall of the second swing arm (15) is arc-shaped.

7. A telescopic heavy-duty crane according to claim 6, characterized in that: The outer wall of the second swing arm (15) is fixedly connected to a second gear (16), and the outer wall of the first rack (10) is fixedly connected to a second rack (17) that meshes with the second gear (16).

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