Combined arm support and crane

Abstract

The utility model discloses a combined arm support which comprises a plurality of arm sections, each arm section comprises an assembly I and an assembly II, the assembly I comprises a main chord member, arm section joints are arranged at the two ends of the main chord member, and the main chord member is provided with a plurality of joints I; the assembly II comprises two main chord members, a plurality of web members are arranged between the two main chord members, and a plurality of joints II are respectively arranged on the two main chord members; and the assembly I and the assembly II are connected through the corresponding joint I and the joint II on the main chord members of the assembly I and the assembly II. According to the utility model, the mounting and the dismounting are convenient, the arm section is split into a plurality of parts, and the parts are transported independently or in a combined manner under the condition that the road transportation standard is met during transportation; when in use, the parts are assembled into a complete arm section through joints by utilizing pin shafts and the like.

Description

Technical Field

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

[0002] The boom is one of the most important components of a crane, determining its performance. Existing crawler crane booms typically have a truss-like structure, including main chords, web members, and boom joints (boom joints within the same boom section generally come in two types, such as double-joints and triple-joints). Each boom section is assembled by welding, and these sections are then combined in a specific sequence (connected by pins) to form a complete boom system.

[0003] However, the welded connection method results in a fixed structure for the entire boom section. The large cross-section boom section is directly limited by the requirements of road transportation for height and width, which makes it impossible to use a boom with a larger cross-section and to fully utilize the performance of the crane, making it difficult to meet the needs of large lifting loads.

[0004] Therefore, it is necessary to develop modular booms that are easy to install and disassemble, and reduce their volume and space occupation during transportation. Utility Model Content

[0005] Purpose of the utility model: In view of the shortcomings and defects of the existing technology, this utility model provides a modular boom and crane that is easy to install and disassemble. The boom is "disassembled" into several parts. During transportation, these parts can be transported individually or in combination, provided that they meet the road transport standards. When in use, these parts are assembled into a complete boom using joints, pins, etc.

[0006] Technical solution: This utility model discloses a modular boom, characterized in that it comprises several boom sections, each boom section including component I and component II. Component I includes a main chord, with boom joints at both ends of the main chord and several joints I on the main chord. Component II includes two main chords, with several web members between the two main chords and several joints II on each of the two main chords. Component I and component II are connected through corresponding joints I and joints II on their main chords.

[0007] The main chord of component I is provided with two rows of connectors I.

[0008] The main chord of component II is provided with a row of joints II.

[0009] In this configuration, a single component I and two components II are connected via connector I and connector II.

[0010] The four components I and the four components II are connected to form the boom section of the boom.

[0011] The adjacent arm sections are connected by arm section joints at both ends of the main chord.

[0012] The main chord is provided with a double joint and a triple joint at both ends.

[0013] The double connector is inserted into the triple connector and connected by a connecting pin.

[0014] A crane, characterized in that it uses the combined boom of this utility model.

[0015] The crane in question is a crawler crane.

[0016] Beneficial Effects: Compared with existing technologies, this utility model has the following significant advantages: This utility model facilitates installation and disassembly by "disassembling" the boom into several parts. During transportation, these parts can be transported individually or in combination, provided they meet road transport standards. In use, these parts are assembled into a complete boom using joints and pins. This effectively solves the problems of difficult transportation and large space occupation associated with existing large-section booms, saving transportation costs. Furthermore, the use of larger cross-section booms improves crane performance and meets greater lifting requirements. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the boom section of a crawler crane in the prior art;

[0018] Figure 2 This is a schematic diagram of the structure of this utility model;

[0019] Figure 3 This is a schematic diagram of the structure of component I of this utility model;

[0020] Figure 4 This is a structural schematic diagram of component II of this utility model;

[0021] Figure 5 This is a schematic diagram of the connection structure of the arm segment of this utility model;

[0022] Figure 6 This is an assembly diagram of the present invention;

[0023] In the diagram, 1 is the main chord; 2 is the web member; 3 is the arm joint; 4 is component I; 41 is joint I; 5 is component II; and 51 is joint II. Detailed Implementation

[0024] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0025] The boom of this utility model is a major component of a crawler crane, also known as the lifting arm or jib. The boom supports the suspended load and maintains a certain lifting height and radius between it and the crane's main unit. The boom section is a component of the boom, typically a truss structure.

[0026] The modular boom of this utility model includes several boom sections. Each boom section includes component I4 and component II5. Component I4 includes a main chord 1, with boom joints 3 at both ends of the main chord 1 and several joints I41. Component II5 includes two main chords 1, with several web members 2 between the two main chords 1 and several joints II51 on each of the two main chords 1. Component I4 and component II5 are connected through corresponding joints I41 and joints II51 on their main chords 1.

[0027] The main chord 1 of component I4 of this invention has two rows of connectors I41. The main chord 1 of component II5 has one row of connectors II51. A single component I4 is connected to two components II5 via connectors I41 and II51. Four components I4 and four components II5 are connected to form a boom section. Adjacent boom sections are connected via boom section connectors 3 at both ends of the main chord 1. Both ends of the main chord 1 have double connectors and triple connectors respectively. The double connector is inserted into the triple connector and connected with a connecting pin.

[0028] The crane of this invention uses a combined boom. The crane is mainly a crawler crane.

[0029] like Figure 2 and Figure 3 Component I consists of a main chord, a boom joint, and joint I, which are formed by welding. Component II consists of a main chord, a web member, a boom joint, and joint II, which are formed by welding to create a single boom section. The main chord specifications in Component I and Component II can be the same or different.

[0030] In use, component I and component II are connected by corresponding joints I and II, and then by pins or other means (a single boom section may contain several components II with different structural forms (such as height dimensions, etc.), which are not distinguished in this patent description for the sake of clarity). Figure 5 As shown. The final combination forms Figure 2 The boom section is shown. Several assembled boom sections are then connected by pins, with the outer sides of the connecting boom sections connected to the outer sides, and the inner sides connected to the inner sides, forming the desired boom assembly as shown. Figure 6 As shown.

[0031] This invention facilitates installation and disassembly by "disassembling" the boom into several parts. During transportation, these parts can be transported individually or in combination, provided they meet road transport standards. In use, these parts are assembled into a complete boom using joints and pins. This effectively solves the problems of difficult transportation and large space occupation associated with existing large-section booms, saving transportation costs. Because a larger cross-section boom can be used, the crane's performance is improved, meeting greater lifting requirements.

Claims

1. A modular boom, characterized by: The arm section comprises several arm sections, each of which comprises component I (4) and component II (5), the component I (4) comprises a main chord (1), the two ends of the main chord (1) are provided with arm section joints (3), and the main chord (1) is provided with several joints I (41); the component II (5) comprises two main chords (1), several web members (2) are arranged between the two main chords (1), and the two main chords (1) are respectively provided with several joints II (51); the component I (4) and the component II (5) are connected through the corresponding joints I (41) and joints II (51) on the main chords (1) of the two.

2. The combination arm as claimed in claim 1, wherein: The main chord (1) of the component I (4) is provided with two rows of joints I (41).

3. The combination arm as claimed in claim 2, wherein: The main chord (1) of the component II (5) is provided with one row of joints II (51).

4. The combination arm as claimed in claim 3, wherein: The single component I (4) and the two components II (5) are connected through the joints I (41) and the joints II (51).

5. The combination arm as claimed in claim 4, wherein: Four components I (4) and four components II (5) are connected to form an arm section of an arm support.

6. The combination arm as claimed in claim 5, wherein: The adjacent arm sections are connected through the arm section joints (3) at the two ends of the main chord (1).

7. The combination arm as claimed in claim 6, wherein: The two ends of the main chord (1) are respectively provided with double joints and triple joints.

8. The combination arm as claimed in claim 6, wherein: The double joint is inserted into the triple joint and connected through a connecting pin.

9. A crane, characterized by: Use the combined arm support according to any one of claims 1-8.

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

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