Enhanced arm support

Abstract

The utility model discloses an enhanced arm support which comprises a plurality of arm sections, each arm section is provided with a main chord member, two ends of each main chord member are respectively provided with a double joint and a three joint, and a liner tube is arranged at the joint of each main chord member and each double joint or each three joint; and a plurality of ribs for reinforcing are arranged outside the main chord members. According to the utility model, the main chord member of each arm section of the arm support is reinforced, and the ribs are additionally arranged on the periphery of the main chord member and are fixed on the main chord member and the joint through welding, so that the strength and rigidity of the arm section are enhanced, and the overall stability of the main arm is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of crane jib, especially to a reinforced jib. BACKGROUND

[0002] With the increasing of the hoisting load of the crawler crane, higher requirements are put forward to the bearing capacity of the crane jib. The jib section of the main arm of the crane jib in the prior art is mainly a four-pole main chord as the main force skeleton, without a main chord reinforcing and reinforcing component, and the load bearing capacity of a single main chord is limited. For some heavy loads of large-scale load, the jib of the crane is difficult to meet the working condition requirements.

[0003] Therefore, it is necessary to develop a new reinforced jib to meet the requirements of high hoisting load. SUMMARY

[0004] The utility model discloses a reinforced jib, which is designed to reinforce each jib section main chord of the jib, and a rib is added around the main chord. The rib is fixed on the main chord and the joint by welding, thereby enhancing the strength and rigidity of the jib section, and improving the overall stability of the main arm.

[0005] Technical scheme: The utility model discloses a reinforced jib, which is designed to reinforce each jib section main chord of the jib, and a rib is added around the main chord. The rib is fixed on the main chord and the joint by welding, thereby enhancing the strength and rigidity of the jib section, and improving the overall stability of the main arm.

[0006] The number of the ribs is 4.

[0007] The four ribs are arranged equidistantly outside the main chord.

[0008] The rib is fixedly connected with the main chord.

[0009] The adjacent jib sections are connected through the double joints and the triple joints at the two ends of the four main chords.

[0010] The double joint is inserted into the triple joint.

[0011] The double joint is inserted into the triple joint and connected through a connecting pin.

[0012] Advantages: Compared with the prior art, the utility model has the following advantages: the utility model reinforces each jib section main chord of the jib, and a rib is added around the main chord. The rib is fixed on the main chord and the joint by welding, thereby enhancing the strength and rigidity of the jib section, and improving the overall stability of the main arm. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 Structure diagram of prior art crane boom;

[0014] Figure 2 Structure diagram of prior art boom section of crane boom;

[0015] Figure 3 Structure diagram of boom of the utility model;

[0016] Figure 4 Structure diagram of single boom section of the utility model;

[0017] Figure 5 Rib fixing structure diagram of main chord of the utility model;

[0018] In the figure, 1 is a double joint; 2 is a main chord; 3 is a rib; 4 is a three joint; 5 is a bushing. 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 reinforced boom of the utility model comprises a plurality of boom sections, each boom section is provided with a main chord 2, the two ends of the main chord 2 are respectively provided with a double joint 1 and a three joint 4, a bushing 5 is arranged at the connection position of the main chord 2 and the double joint 1 or the three joint 4; a plurality of ribs 3 for reinforcement are arranged outside the main chord 2.

[0021] The number of the ribs 3 of the utility model is four. The four ribs 3 are arranged equidistantly outside the main chord 2. The ribs 3 are fixedly connected with the main chord 2. The adjacent boom sections are connected through the double joints 1 and the three joints 4 at the two ends of the four main chords 2. The double joint 1 is inserted into the three joint 4 and connected through a connecting pin.

[0022] As Figure 3 The reinforced boom of the utility model mainly comprises a double joint, a main chord, a rib, a three joint and a bushing. Through the combination and assembly of the above-mentioned structural components, not only a single boom section can be assembled, but also a boom can be combined. As Figure 4 It is an assembly drawing of a single boom section. In comparison with Figure 2 the prior art boom section, the utility model performs secondary welding and fixing of the rib on the main chord after the welding and fixing of the main body of the prior art boom section. As Figure 5 It is a rib fixing drawing of the main chord, and the welded boom section is assembled, so that the installation operation of the boom is completed.

[0023] The utility model discloses a reinforcing design is carried out to every arm section main chord bar of arm support, and adds the rib in the four -around of main chord bar, and the rib is fixed on main chord bar, joint through welding to strengthen the strength, rigidity ability of arm section, has improved the overall stability of main arm.

Claims

1. An enhanced arm support, characterized by: The arm section comprises several arm sections, each of which is provided with a main chord (2), the two ends of the main chord (2) are respectively provided with a double joint (1) and a three joint (4), and the connection between the main chord (2) and the double joint (1) or the three joint (4) is provided with a bushing (5); the outer part of the main chord (2) is provided with several reinforcing ribs (3).

2. The enhanced arm stand of claim 1, wherein: The number of the reinforcing ribs (3) is 4.

3. The enhanced arm stand of claim 2, wherein: The four reinforcing ribs (3) are arranged equidistantly on the outer part of the main chord (2).

4. The enhanced arm stand of claim 3, wherein: The reinforcing rib (3) is fixedly connected with the main chord (2).

5. The enhanced arm stand of claim 1, wherein: The adjacent arm sections are connected through the double joints (1) and the three joints (4) at the two ends of the four main chords (2).

6. The enhanced arm stand of claim 5, wherein: The double joint (1) is inserted into the three joint (4).

7. The enhanced arm stand of claim 6, wherein: The double joint (1) is inserted into the three joint (4) and connected through a connecting pin.

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