Self-dismounting structure

Abstract

The utility model discloses a self-dismounting structure which comprises a pulling plate between a main arm and a mast and a main arm bottom section arm, and a self-dismounting lifting point or a lifting oil cylinder is arranged on the main arm bottom section arm. And the pulling plate between the main arm and the mast is connected with the main arm and the mast. The hoisting point or the lifting oil cylinder is additionally arranged on the main arm bottom section arm, so that the hoisting bearing capacity can be improved, the hoisting range is enlarged, and meanwhile, short-distance transition of the main machine with the main arm bottom section arm can be realized.

Description

Technical Field

[0001] This utility model relates to the field of cranes, and in particular to a self-disassembly and assembly structure. Background Technology

[0002] Tracked cranes are heavy and have many components, requiring disassembly and relocation, which is inconvenient and usually necessitates the use of auxiliary cranes, resulting in high operating costs. Therefore, many modern crawler cranes are equipped with self-disassembly / reassembly functions to improve vehicle disassembly and assembly efficiency and reduce reliance on auxiliary cranes. The most common feature is mast self-disassembly / reassembly, which uses a luffing winch and luffing rope to change the mast's forward tilt angle α. Lifting points or lifting cylinders are installed on the mast to change the distance S of the load from the crane's rotation center and its height H from the ground; thus enabling the lifting and lowering of heavy objects and assisting in disassembly and assembly. While mast self-disassembly / reassembly offers convenience for component disassembly and assembly to some extent, it is limited by mast size, structural strength, and stability, resulting in weak load-bearing capacity and a small lifting range.

[0003] The mast's self-disassembly and assembly has a weak lifting capacity: Due to the mast's slender shape, local structural strength, and overall stability, the load cannot be too heavy when using the mast's self-disassembly and assembly. If the load is too heavy, it will cause local instability of the mast and structural damage.

[0004] The mast's self-disassembly and assembly has a limited lifting range: This is because the mast can become locally unstable and structurally damaged when subjected to excessive axial force. Therefore, the lifting range of heavy objects during mast self-disassembly and assembly is usually not too large. The larger the lifting range and the smaller the mast's elevation angle, the greater the axial force on the mast, and the easier it is for the mast to become unstable.

[0005] Therefore, it is necessary to develop new self-disassembly and assembly structures to improve the load-bearing capacity and increase the lifting range. Utility Model Content

[0006] Purpose of the utility model: In view of the shortcomings and defects of the existing technology, this utility model provides a self-disassembly and assembly structure. By adding lifting points or lifting cylinders to the bottom section of the main boom, the load-bearing capacity of the hoisting can be improved and the hoisting range can be increased. At the same time, it can realize the short-distance transfer of the main machine with the bottom section of the main boom.

[0007] Technical solution: The present invention provides a self-disassembly and assembly structure, characterized in that: it includes a tie plate between the main boom and the mast, and a bottom section of the main boom, the bottom section of which is provided with a self-disassembly and assembly lifting point or a lifting cylinder; the tie plate between the main boom and the mast connects the main boom and the mast.

[0008] The main boom bottom section is equipped with a pull plate connecting hinge point and a self-disassembly and assembly lifting point.

[0009] The pull plate connecting hinge point and the self-disassembly lifting point are located above or below the bottom section of the main boom.

[0010] The main boom, mast, luffing rope, and luffing winch are connected.

[0011] The self-disassembly lifting point or lifting cylinder is connected to the lifting slings.

[0012] The lifting slings include wire ropes and slings.

[0013] The slings are connected to the transport vehicle via a track frame.

[0014] Beneficial effects: Compared with the prior art, this utility model has the following significant advantages: This utility model is applied to the self-disassembly and assembly process of the crawler crane main body or truss boom. By setting auxiliary disassembly and assembly lifting points or lifting cylinders on the bottom section of the main boom, and using the main luffing system to control the pitch of the bottom section of the main boom to adjust the distance (amplitude) of the auxiliary disassembly and assembly lifting points or lifting cylinders from the rotation center of the whole machine, it can achieve the purpose of self-disassembly and assembly of the crawler frame, counterweight, main boom, and short-distance relocation without disassembly; it enriches the self-disassembly and assembly function of crawler cranes, improves the efficiency of disassembly, assembly and relocation, reduces the dependence of crawler crane disassembly and assembly on auxiliary cranes, and saves construction costs for customers. Attached Figure Description

[0015] Figure 1 A schematic diagram of the existing technology for self-disassembly and assembly of masts;

[0016] Figure 2 A diagram illustrating the usage status of a self-disassembly and assembly mast in existing technology;

[0017] Figure 3 This is a schematic diagram of the structure of this utility model;

[0018] In the diagram, 1 is the luffing rope; 2 is the luffing winch; 3 is the mast; 4 is the lifting cylinder; 5 is the tie plate between the main boom and the mast; 6 is the bottom section of the main boom; 7 is the slings; 8 is the track frame; and 9 is the transport vehicle. Detailed Implementation

[0019] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0020] This utility model relates to a crawler crane: a mobile crane in which the lifting components and mechanisms are mounted on a crawler chassis, and movement is achieved through the crawler track system. Turntable: The equipment platform above the slewing bearing of the crawler crane, which can rotate 360° relative to the chassis with the slewing bearing. Main boom: One of the most basic boom structures in the truss boom of a crawler crane. Main boom bottom section: A section of the boom that is directly connected to the turntable.

[0021] This utility model's self-disassembly and assembly structure includes a tie plate 5 between the main boom and the mast, and a main boom bottom section 6. The main boom bottom section 6 is equipped with a self-disassembly and assembly lifting point or lifting cylinder 4. The tie plate 5 connects the main boom and the mast 3. By using the main luffing winch to drive the main luffing wire rope, the mast 3 pulls the main boom bottom section 6, thereby adjusting the forward tilt angle of the main boom bottom section 6. This allows for changes in the horizontal distance (amplitude) of the self-disassembly and assembly lifting point or lifting cylinder 4 from the machine's rotation center and its height from the ground. It has the ability to self-disassemble and assemble the track frame, counterweight, and boom. Compared to mast self-disassembly and assembly, it can achieve a greater self-disassembly and assembly lifting capacity and lifting range, reducing the user's dependence on auxiliary disassembly and assembly cranes and lowering operating costs.

[0022] The main boom bottom section 6 of this utility model is equipped with a pull plate connecting hinge point and a self-disassembly lifting point. The pull plate connecting hinge point and the self-disassembly lifting point are located above or below the main boom bottom section 6 to meet the connection and lifting function requirements. The main boom and mast 3 are connected to the luffing rope 1 and the luffing winch 2. The self-disassembly lifting point or the lifting cylinder 4 is connected to the sling 7. The sling 7 includes wire rope and slings. The sling 7 is connected to the transport vehicle 9 through the crawler frame 8.

[0023] The working principle utilizes the large cross-sectional dimensions, high rigidity, strength, and overall stability of the truss boom structure, including the main boom bottom section (Hyper Boom 6). It can withstand significant axial forces and localized stresses, meeting the requirements of strong self-disassembly and assembly lifting capacity and wide applicability. Simultaneously, the crawler crane can transport the main boom bottom section (Hyper Boom 6) over short distances. Therefore, it reduces the reliance on auxiliary cranes during crawler crane assembly and disassembly, improves self-disassembly and assembly efficiency and applicability, and lowers customer operating costs.

[0024] This utility model enhances the self-disassembly and lifting capacity of crawler cranes; by utilizing the bottom section of the main boom to achieve the self-disassembly and lifting function, on the one hand, it can increase the forward tilt angle of the mast during operation, improve the stress on the mast, and the small axial force can ensure the stability of the mast and prevent damage; on the other hand, the bottom section of the main boom has a large cross-sectional size, good stability, and strong load-bearing capacity.

[0025] This invention expands the self-disassembly and lifting range of crawler cranes: due to the good stability and strong load-bearing capacity of the main boom bottom section, it can withstand greater axial force; during self-disassembly and lifting operations, the small angle of the main boom bottom section is less restricted, which can expand the self-disassembly and lifting range of crawler cranes; in addition, it can realize the main machine with the main boom bottom section for short-distance relocation without disassembly, improving relocation efficiency.

[0026] This invention utilizes the advantages of the truss boom (main boom bottom section boom) having a larger cross-sectional size, higher rigidity, greater strength, and better overall stability compared to the mast structure; it can withstand larger axial forces and local stresses, meeting the requirements of strong self-disassembly and lifting capacity and wide applicability of the truss boom; at the same time, the crawler crane can carry the main boom bottom section boom for short-distance relocation.

Claims

1. A self-disassembling structure, characterized in that: It includes a tie plate (5) between the main boom and the mast, and a bottom section boom (6) of the main boom. The bottom section boom (6) of the main boom is equipped with a self-disassembly lifting point or a lifting cylinder (4); the tie plate (5) between the main boom and the mast connects the main boom and the mast (3).

2. The self-disassembly structure according to claim 1, characterized in that: The main boom bottom section (6) is equipped with a pull plate connecting hinge point and a self-disassembly and assembly lifting point.

3. The self-disassembly structure according to claim 2, characterized in that: The aforementioned pull plate connecting hinge point and self-disassembly lifting point are located above or below the bottom section of the main boom (6).

4. The self-disassembly structure according to claim 1, characterized in that: The main boom, mast (3) are connected to the luffing rope (1) and the luffing winch (2).

5. The self-disassembly structure according to claim 1, characterized in that: The self-disassembly lifting point or lifting cylinder (4) is connected to the lifting sling (7).

6. The self-disassembly structure according to claim 5, characterized in that: The slings (7) include wire ropes and slings.

7. The self-disassembly structure according to claim 5, characterized in that: The sling (7) is connected to the transport vehicle (9) via the track frame (8).

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