Enhanced boom and crane

Abstract

The utility model discloses a reinforced boom and a crane, the reinforced boom comprises a plurality of boom sections, each boom section is provided with two main chord members which are arranged side by side, the tops and the bottoms of the two main chord members are reinforced through reinforcing plates, and the two main chord members are connected through a plurality of pins; a double-joint and a three-joint are respectively arranged at two ends of the main chord member, and plates and liner tubes are arranged at the joints of the double-joint, the three-joint and the main chord member. According to the utility model, a single main chord member of a boom section of a crane in the prior art is changed into a reinforced structure with two parallel main chord members, so that the deformation resistance of the main chord members is improved, and the load capacity and the overall stability of the main boom are improved.

Description

Technical Field

[0001] This utility model relates to the field of cranes, and in particular to an enhanced boom and crane. Background Technology

[0002] With the increasing lifting loads of crawler cranes, higher requirements are being placed on the load-bearing capacity of the crane boom. Existing crane booms use four main chord members as the primary load-bearing frame, without reinforcing components. The load-bearing capacity of a single main chord member is limited, making it difficult for crane booms to meet the demands of handling large loads.

[0003] Therefore, it is necessary to develop new types of enhanced booms to meet the requirements of high lifting loads. Utility Model Content

[0004] Purpose of the utility model: In view of the shortcomings and defects of the prior art, this utility model provides an enhanced boom and crane, which replaces the single main chord of the boom segment of the existing crane with a reinforced structure of two main chords in parallel, thereby improving the deformation resistance of the main chords and improving the load capacity and overall stability of the boom.

[0005] Technical solution: The enhanced boom of this utility model includes several boom sections, each boom section is provided with two main chords arranged side by side, the top and bottom of the two main chords are reinforced by reinforcing plates, and the two main chords are connected by several pins; the two ends of the main chords are respectively provided with double joints and triple joints, and the connection between the double joints and triple joints and the main chords is provided with plates and liner tubes.

[0006] The arm sections are connected by double-joints and triple-joints.

[0007] The double connector is inserted into the triple connector and connected by a connecting pin.

[0008] Among them, the two main chords are provided with several sets of connecting holes.

[0009] The pins pass through the connecting holes corresponding to the two main chords.

[0010] The crane in question is a crawler crane.

[0011] A crane characterized by using the enhanced boom as described in any one of claims 1-5.

[0012] Beneficial effects: Compared with the prior art, the present invention has the following significant advantages: The present invention changes the single main chord of the boom section of the existing crane to a reinforced structure of two main chords in parallel, which improves the ability of the main chord to resist deformation and improves the load capacity and overall stability of the boom. Attached Figure Description

[0013] Figure 1 This is a structural schematic diagram of a crane boom in the prior art;

[0014] Figure 2 This is a schematic diagram of the boom section of a crane boom in the prior art;

[0015] Figure 3 This is a schematic diagram of the overall assembly structure of the boom of this utility model;

[0016] Figure 4 This is a schematic diagram of the assembly structure of a single arm segment of this utility model;

[0017] Figure 5 This is a schematic diagram of the main chord structure of the arm section of this utility model;

[0018] Figure 6 This is a schematic diagram of the assembly structure of the two main chord sections of this utility model;

[0019] Figure 7 This is a schematic cross-sectional view of the two main chord sections of this utility model.

[0020] Figure 8 This is a schematic diagram of the arm segment of this utility model;

[0021] Figure 9 This is a schematic diagram of the connection structure of the dual connector of this utility model;

[0022] In the diagram, 1 is a double joint; 2 is the main chord; 3 is a pin; 4 is a reinforcing plate; 5 is a triple joint; 6 is a plate; and 7 is a liner. Detailed Implementation

[0023] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0024] This utility model relates to a crawler crane: a mobile crane in which the lifting operation part is mounted on a crawler chassis and travels by means of a crawler device. The boom: a truss-type structure used to lift heavy objects to a certain height and radius.

[0025] This utility model discloses an enhanced boom, comprising several boom sections. Each boom section has two main chord members 2 arranged side-by-side. The top and bottom of the two main chord members 2 are reinforced by reinforcing plates 4, and the two main chord members 2 are connected by several pins 3. Each end of the main chord member 2 has a double-joint 1 and a triple-joint 5. Plates 6 and bushings 7 are provided at the connection points between the double-joint 1, triple-joint 5, and the main chord member 2. The boom sections are connected by double-joint 1 and triple-joint 5. The double-joint 1 is inserted into the triple-joint 5 and connected by connecting pins. Several sets of connecting holes are provided on the two main chord members 2. The pins 3 pass through the corresponding connecting holes on the two main chord members 2.

[0026] The cranes using the enhanced boom of this invention are mainly crawler cranes.

[0027] This invention features a reinforcement design for the main chord members of each boom segment. A single main chord member is designed as two main chord members arranged side-by-side, with reinforcing plates welded and fixed to the upper and lower parts of each main chord member. This enhances the strength and rigidity of the boom segment, improving the overall stability of the main boom.

[0028] Figure 3 This is a schematic diagram of the overall assembly structure of the boom. Figure 4 This is a schematic diagram of the assembly structure of a single arm segment. Figure 5 The diagram shows the main chord structure of the section. Connecting holes are machined at appropriate positions on the main chord, ensuring the connection dimensions between the holes are met. Figure 6 , Figure 7 This document presents an assembly diagram and a cross-sectional view of the two main chord sections. First, the two main chord sections are positioned using pins. Then, fillet welds are used to secure the pins to the main chord sections. Reinforcing plates are welded to the upper and lower surfaces of the main chord sections to further secure them. Finally, the fixed main chord sections are welded together with web members to assemble the arm section. Figure 8 As shown. Figure 9 Finally, the welding of the double joint and the three structures is carried out. First, the joint, the liner, and the fixing plate are welded together, and the coaxiality of the structure, the liner, and the plate is ensured. The welded joint is then fixed to the main chord by welding.

Claims

1. An enhanced arm support, characterized by: The arm section comprises several arm sections, each of which is provided with two main chords (2) arranged side by side, the top and bottom of the two main chords (2) are reinforced by reinforcing plates (4), and the two main chords (2) are connected by several pins (3); the two ends of the main chord (2) are respectively provided with a double joint (1) and a three joint (5), and the connection part of the double joint (1), the three joint (5) and the main chord (2) is provided with a plate (6) and a lining pipe (7).

2. The enhanced arm stand of claim 1, wherein: The arm sections are connected by the double joint (1) and the three joint (5).

3. The enhanced arm stand of claim 2, wherein: The double joint (1) is inserted into the three joint (5) and connected by a connecting pin.

4. The enhanced arm stand of claim 1, wherein: The two main chords (2) are provided with several groups of connecting holes.

5. The enhanced arm stand of claim 4, wherein: The pin (3) passes through the corresponding connecting holes of the two main chords (2).

6. A crane, characterized by: The enhanced arm support of any one of claims 1-5 is used.

7. A crane, characterized by: The crane is a crawler crane.

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