Crane boom structure capable of being quickly disassembled and assembled

Abstract

The utility model discloses a crane boom structure capable of being quickly disassembled and assembled, and relates to the technical field of crane boom structures. The crane boom structure capable of being quickly disassembled and assembled comprises at least three sectional booms, the end parts of the adjacent sectional booms are respectively provided with a connector and a splicing port, and the connectors and the splicing ports are matched and connected in an inserting manner; the connector is provided with an internal threaded hole, and the segmented arm support and the connector are fixed by screwing the threaded end of the reinforcing longitudinal rod into the internal threaded hole; x-shaped anti-bending rod assemblies are symmetrically arranged on the outer sides of the splicing positions of the adjacent sectional arm frames, each X-shaped anti-bending rod assembly is composed of a first anti-bending rod and a second anti-bending rod which are hinged in a crossed mode, and the ends of the anti-bending rods are detachably connected with connecting lugs on the sectional arm frames through connecting pins with limiting parts. According to the utility model, the disassembly and assembly efficiency of the crane boom is improved through a double fixing mechanism of the insertion connection of the sectional boom and the threaded locking of the reinforcing longitudinal rod.

Description

Technical Field

[0001] This utility model relates to the field of crane boom structure technology, and more specifically to a crane boom structure that can be quickly disassembled and assembled. Background Technology

[0002] Traditional crane booms often employ either integral welded structures or segmented bolted connections, resulting in low assembly / disassembly efficiency, transportation limitations, and weak structural joints. Specifically, integral welded booms are limited by fixed lengths, making them difficult to adapt to different working conditions, and on-site cutting and modification can easily compromise structural strength. With the logistics industry's increasing demand for rapid equipment relocation and modular transportation, existing technologies struggle to balance the contradiction between "rapid assembly / disassembly" and "structural reliability." Therefore, there is an urgent need for a crane boom structure that combines efficient assembly, high load-bearing capacity, and adaptability for expansion, addressing the pain points of traditional solutions such as long construction cycles, high maintenance costs, and poor adaptability to various working conditions. Utility Model Content

[0003] The purpose of this utility model is to provide a crane boom structure that can be quickly disassembled and assembled in order to solve the above-mentioned technical problems.

[0004] To achieve the above objectives, this utility model specifically adopts the following technical solution:

[0005] A crane boom structure that can be quickly assembled and disassembled includes at least three segmented booms. The ends of adjacent boom segments are respectively provided with connectors and splicing interfaces. The connectors and splicing interfaces are matched and connected by plug-in mating. The connectors are provided with internal threaded holes. The boom segments and connectors are fixed by screwing the threaded ends of reinforcing rods into the internal threaded holes. X-shaped anti-bending rod assemblies are symmetrically arranged on the outer side of the splicing points of adjacent boom segments. The X-shaped anti-bending rod assemblies are composed of a first anti-bending rod and a second anti-bending rod that are cross-hinged. The ends of the anti-bending rods are detachably connected to the connecting lugs on the boom segments by connecting pins with limiting parts.

[0006] A preferred technical solution: The segmented boom has multiple connecting lugs evenly distributed around its circumference.

[0007] A preferred technical solution: the limiting part of the connecting pin is a radial flange, the connecting pin rod part is provided with an external thread that matches the threaded hole of the connecting lug, and the flange and the countersunk hole at the end of the bending rod form an axial limit.

[0008] A preferred technical solution: One end of the reinforcing rod is provided with a limiting boss to prevent excessive screwing.

[0009] A preferred technical solution: three segmented booms are installed.

[0010] A preferred technical solution: Two X-type anti-bending bar components are set.

[0011] The beneficial effects of this utility model are as follows:

[0012] 1. This utility model improves the assembly and disassembly efficiency of crane booms through a dual fixing mechanism of segmented boom insertion connection and threaded locking of reinforcing longitudinal rods. Specifically, the guide insertion of the connector and splice interface enables quick and accurate alignment. Combined with the limiting boss design of the reinforcing longitudinal rod, the screwing depth is automatically limited during tightening, avoiding over-screwing or loosening of the connection due to human error, ensuring reliable locking in one go.

[0013] 2. In this invention, the symmetrically arranged X-shaped anti-bending bar components form a triangular support network through cross-hinged anti-bending bars, distributing the bending moment and torsional stress borne at the joints to the main boom structure. This design shortens on-site assembly time and is particularly suitable for frequent disassembly and assembly and high-load hoisting scenarios. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the X-type bending member assembly;

[0016] Figure 3 This is a schematic diagram of the connector structure;

[0017] Figure 4 This is a schematic diagram of the structure in which the first anti-bending rod is connected to the connecting lug via a connecting pin.

[0018] Reference numerals in the attached drawings: 1. First segment boom; 2. Second segment boom; 3. Third segment boom; 4. Connector; 41. Internal threaded hole; 5. Joint; 6. Reinforcing longitudinal bar; 61. Limiting boss; 7. X-type anti-bending bar assembly; 71. First anti-bending bar; 72. Second anti-bending bar; 73. Connecting pin; 731. Limiting part; 8. Connecting lug. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0020] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0021] like Figures 1 to 4 As shown, this embodiment provides a crane boom structure that can be quickly disassembled and assembled, including three segmented booms, namely the first segmented boom 1, the second segmented boom 2, and the third segmented boom 3. The ends of adjacent segmented booms are respectively provided with connectors 4 and splicing interfaces 5. The connectors 4 and splicing interfaces 5 are matched and connected by plug-in engagement. The connectors 4 are provided with internal threaded holes 41. The segmented booms and connectors 4 are fixed by screwing the threaded end of the reinforcing longitudinal rod 6 into the internal threaded holes 41. X-shaped anti-bending rod assemblies 7 are symmetrically arranged on the outer side of the splicing points of adjacent segmented booms. Two X-shaped anti-bending rod assemblies 7 are provided. The X-shaped anti-bending rod assembly 7 is composed of a first anti-bending rod 71 and a second anti-bending rod 72 that are cross-hinged. The ends of the anti-bending rods are detachably connected to the connecting lugs 8 on the segmented booms through connecting pins 73 with limiting parts 731. The modular design of the boom segments, with their interlocking joints and the threaded locking mechanism of the reinforcing longitudinal members 6, enables rapid assembly and disassembly of the boom structure, significantly shortening construction preparation time. Simultaneously, the modular segmented design facilitates transportation and storage, reducing logistics costs. The X-shaped anti-bending member assemblies 7, symmetrically arranged on the outer side of the joints, form a stable triangular support structure through the cross-hinged first and second anti-bending members 71 and 72, effectively dispersing load stress and significantly improving the boom's bending and torsional resistance, preventing deformation at the joints due to excessive local stress. The interlocking joint of the connector 4 and the splice interface 5, combined with the threaded fixing of the reinforcing longitudinal members 6, forms a double locking mechanism, ensuring a rigid connection between the boom segments. The connecting pin 73 with the limiting part 731 is detachably connected to the connecting lug 8 on the boom segments, preventing pin detachment and facilitating maintenance and replacement, thus improving structural safety and service life.

[0022] Furthermore, the segmented boom has multiple connecting lugs 8 evenly distributed around its circumference.

[0023] Furthermore, the limiting part 731 of the connecting pin 73 is a radial flange, the rod part of the connecting pin 73 is provided with an external thread that matches the threaded hole of the connecting lug 8, and the flange and the countersunk hole at the end of the bending rod form an axial limit.

[0024] Furthermore, one end of the reinforcing rod 6 is provided with a limiting boss 61 to prevent excessive screwing.

[0025] During assembly, place the three segmented booms horizontally on the assembly platform, arranging the first segmented boom 1, the second segmented boom 2, and the third segmented boom 3 in sequence. Adjust the positions of adjacent booms so that the connector 4 of the first boom is aligned with the splice interface 5 of the second boom, and the connector 4 of the second boom is aligned with the splice interface 5 of the third boom. Push the adjacent booms axially forward, inserting the connector 4 into the splice interface 5 until the end faces are in contact. Screw the threaded end of the reinforcing longitudinal rod 6 into the internal threaded hole 41 of the connector 4, and manually tighten it until the limiting boss 61 contacts the end face of the boom side. Apply a preset torque to complete the threaded locking. Cross-hing the first anti-bending rod 71 and the second anti-bending rod 72, and adjust the locking nut at the intersection to the preset tension. Friction pads can be used to press and fix it. Align the end of the anti-bending rod with the connecting lug 8, insert the connecting pin 73 with the radial flange, and rotate the connecting pin 73 so that its external thread engages with the threaded hole of the connecting lug 8 until the flange is tightly against the end face of the anti-bending rod to form an axial limit. Check the clearance between the limiting boss 61 of all reinforcing longitudinal rods 6 and the end face of the connector 4 to ensure there is no excessive screwing; monitor structural deformation under no-load and loaded conditions. The crane boom structure in this utility model is particularly suitable for hoisting goods onto a vehicle.

Claims

1. A crane boom structure that can be quickly assembled and disassembled, characterized in that, It includes at least three segmented booms, with connectors and splicing interfaces at the ends of adjacent boom segments respectively. The connectors and splicing interfaces are matched and connected by plug-in mating. The connectors have internal threaded holes, and the boom segments and connectors are fixed by screwing the threaded end of a reinforcing rod into the internal threaded hole. X-shaped anti-bending rod assemblies are symmetrically arranged on the outer side of the splicing area of ​​adjacent boom segments. The X-shaped anti-bending rod assembly consists of a first anti-bending rod and a second anti-bending rod that are cross-hinged. The ends of the anti-bending rods are detachably connected to the connecting lugs on the boom segments by connecting pins with limiting parts.

2. The crane boom structure with quick assembly and disassembly according to claim 1, characterized in that, The segmented boom has multiple connecting lugs evenly distributed around its circumference.

3. The crane boom structure with quick assembly and disassembly according to claim 1, characterized in that, The limiting part of the connecting pin is a radial flange, the connecting pin rod part is provided with an external thread that matches the threaded hole of the connecting lug, and the flange and the countersunk hole at the end of the bending rod form an axial limit.

4. The crane boom structure with quick assembly and disassembly according to claim 3, characterized in that, One end of the reinforcing longitudinal rod is provided with a limiting boss to prevent excessive screwing.

5. The crane boom structure with quick assembly and disassembly according to claim 1, characterized in that, The segmented boom is equipped with three sections.

6. The crane boom structure with quick assembly and disassembly according to claim 1, characterized in that, Two X-shaped anti-bending rod assemblies are provided.

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