Assembly type cantilever crane structure

Abstract

The utility model discloses an assembly type arm support structure which comprises a plurality of arm sections, and each arm section comprises two assemblies I and two assemblies II. The assembly I or the assembly II comprises two main chord members which are arranged side by side, a plurality of web members are arranged between the main chord members, and a row of joints are arranged on the main chord members; the width of the assembly I is greater than or equal to that of the assembly II, and the main chord members of the assembly I and the main chord members of the assembly II are connected through corresponding joints. According to the utility model, the arm section is split into a plurality of parts, so that the mounting, the dismounting and the transportation are convenient.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of crane boom, especially relates to an assembly type boom structure. BACKGROUND

[0002] The arm section of the crawler crane boom of prior art is generally a truss type structure, including main chord, web, arm section joint (the arm section joint of the same arm section generally has two kinds, such as double joint and three joint) etc. Through welding, one arm section is formed, and each arm section is combined according to a certain order (the arm sections are connected through pin shaft connecting joint) to form a set of boom.

[0003] However, the connecting mode of welding is used, the overall arm section is fixed structure, and the large-section arm section is directly limited by the requirements of highway transportation for height and width, so that the boom with large section cannot be used, the performance of the crane cannot be fully played, and the large hoisting load demand is difficult to meet.

[0004] Therefore, the assembly type boom needs to be developed, which is convenient to install and disassemble, and reduces the volume and occupied space in the transportation process. UTILITY MODEL CONTENT

[0005] UTILITY MODEL OBJECT: in view of the defects of prior art, the utility model provides an assembly type boom structure, which splits the arm section into several parts, is convenient to install and disassemble, and is convenient to transport.

[0006] TECHNICAL SCHEME: the utility model discloses an assembly type boom structure, characterized by comprising a plurality of arm sections, each arm section comprising two component I and two component II; the component I or component II comprises two main chords arranged side by side, a plurality of webs are arranged between the main chords, and a row of joints is arranged on the main chord; the width of the component I is greater than or equal to the width of the component II, and the main chord of the component I and the main chord of the component II are connected through corresponding joints.

[0007] Among them, the joint of the main chord of the component I and the component II is connected through a pin shaft.

[0008] Among them, two component I and two component II are connected in sequence to form an arm section.

[0009] Among them, the main chord is provided with an arm section joint at both ends.

[0010] Among them, the adjacent arm section is connected through the arm section joint at the end of the main chord to form a boom.

[0011] Among them, the arm section joint comprises a double joint and a three joint.

[0012] The double joint is inserted into the three joint and is connected through a pin shaft.

[0013] Beneficial effects: Compared with the prior art, the arm section is "split" into several parts, which is convenient for installation and disassembly and convenient for transportation. When transporting, the parts are transported separately or in combination under the condition of meeting the road transportation standard; when using, the parts are assembled into a complete arm section through the joint using a pin shaft and the like; effectively solve the problems of difficult transportation and large space occupation of the existing large cross-section arm section, save transportation cost. Since a larger cross-section arm can be used, the performance of the crane is improved, and larger hoisting requirements are met. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a structure schematic view of the arm section of the crawler crane arm of the prior art;

[0015] Figure 2 It is a structure schematic view of the utility model;

[0016] Figure 3 It is a structure schematic view of the assembly of the utility model;

[0017] Figure 4 It is a structure schematic view of the arm of the utility model;

[0018] In the figure, 1 is a main chord; 2 is a web; 3 is an inter-arm joint; 4 is a joint; 5 is an assembly I; 6 is an assembly II. DETAILED DESCRIPTION

[0019] The technical scheme of the utility model will be further described below in combination with the drawings and specific embodiments.

[0020] The assembled arm structure of the utility model comprises a plurality of arm sections, each arm section comprising two assemblies I 5 and two assemblies II 6; the assembly I 5 or the assembly II 6 comprises two main chords 1 arranged side by side, a plurality of webs 2 are arranged between the main chords 1, and a row of joints 4 is arranged on the main chords 1; the width of the assembly I 5 is greater than or equal to the width of the assembly II 6, and the main chords 1 of the assembly I 5 and the main chords 1 of the assembly II 6 are connected through corresponding joints 4.

[0021] The joints 4 of the main chords 1 of the assembly I 5 and the assembly II 6 are connected through a pin shaft. Two assemblies I 5 and two assemblies II 6 are connected in sequence to form an arm section. The ends of the main chords 1 are respectively provided with inter-arm joints 3. Adjacent arm sections are connected through the inter-arm joints 3 at the ends of the main chords 1 to form an arm. The inter-arm joint 3 comprises a double joint and a three joint. The double joint is inserted into the three joint and is connected through a pin shaft.

[0022] AsFigure 2 With Figure 3 , the assembly I includes the main chord, the web, the arm joint, the joint, the number of joints, these components by welding into assembly I. Assembly II includes the main chord, the web, the arm joint, the joint, the number of joints, these components by welding into assembly II. The width of assembly I is greater than or equal to the width of assembly II, the joint is connected by the pin shaft and the like, and then the assembly I and the assembly II are connected to form the arm joint. The arm joints are connected by the pin shaft and the like, and then the arm joints are connected to form the assembled arm support.

[0023] The arm joint is "split" into several parts, which is convenient for installation and disassembly, and is convenient for transportation. During transportation, these parts are transported separately or in combination under the condition of meeting the road transportation standard; during use, these parts are assembled into complete arm joints by the joint using the pin shaft and the like; the problems of the existing large-section arm joint transportation difficulty and large space occupation are effectively solved, and the transportation cost is saved. Since a larger-section arm support can be used, the performance of the crane is improved, and larger hoisting requirements are met.

Claims

1. A fabricated boom structure, characterized by: The arm section comprises several arm sections, each of which comprises two component I (5) and two component II (6); the component I (5) or component II (6) comprises two main chords (1) arranged side by side, several web members (2) are arranged between the main chords (1), and a row of connectors (4) are arranged on the main chords (1); the width of the component I (5) is greater than or equal to the width of the component II (6), and the main chords (1) of the component I (5) and the component II (6) are connected through corresponding connectors (4).

2. The fabricated boom structure of claim 1, wherein: The connectors (4) of the main chords (1) of the component I (5) and the component II (6) are connected through a pin shaft.

3. The fabricated boom structure of claim 1, wherein: Two component I (5) and two component II (6) are sequentially connected to form an arm section.

4. The fabricated boom structure of claim 1, wherein: The main chords (1) are respectively provided with an inter-arm section connector (3) at both ends.

5. The fabricated boom structure of claim 1, wherein: The adjacent arm sections are connected through the inter-arm section connectors (3) at the ends of the main chords (1) to form an arm support.

6. The fabricated boom structure of claim 5, wherein: The inter-arm section connector (3) comprises a double connector and a triple connector.

7. The fabricated boom structure of claim 6, wherein: The double connector is inserted into the triple connector and connected through a pin shaft.

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