CN219297029U

CN219297029U - Integral welding standard joint for angle steel main strings

Info

Publication number: CN219297029U
Application number: CN202320560714.2U
Authority: CN
Inventors: 米成宏; 衣磊; 李玉杰; 徐孝; 白银科
Original assignee: Xuzhou Construction Machinery Group Co Ltd XCMG
Current assignee: Xuzhou Construction Machinery Group Co Ltd XCMG
Priority date: 2023-03-21
Filing date: 2023-03-21
Publication date: 2023-07-04
Anticipated expiration: 2033-03-21

Abstract

The utility model discloses an angle steel main chord integral welding standard knot, which consists of a plurality of main chords and other connecting web members fixed between adjacent main chords, wherein each main chord consists of angle steel and a joint fixed on the angle steel, and the plurality of angle steel main chord integral welding standard knots are sequentially stacked up and down to enable the upper and lower adjacent main chords to be connected together through a pin shaft; the main chord and other connecting web members are made of angle steel, the joint is made of forged steel, the bearing capacity of the angle steel with the same cross section area is larger than that of the square pipe, and the strength of the integral welding standard joint of the main chord of the angle steel is improved; the pin shaft is adopted to connect and facilitate the disassembly and assembly of the standard section; the outer side plate A, the outer side plate B and the inner angle iron fixing plate can play a role in positioning and guiding when the main chord member is connected, so that the installation efficiency is improved, partial load can be borne, and the strength of the tower body is further improved.

Description

Integral welding standard joint for angle steel main strings

Technical Field

The utility model relates to an integral welding standard joint, in particular to an integral welding standard joint for angle steel main strings.

Background

The standard sections are basic constituent units of the tower crane, the standard sections are connected through bolts or pin shafts, and the standard sections can be interchanged, so that the requirements on the center distance of the joints of the standard sections are higher, and the requirements on the bearing capacity of the joints and the main chord members are also higher.

In the existing standard section, for a small-tonnage tower crane, a mode of connecting a square pipe main chord with bolts is adopted, as shown in fig. 1, the connection mode between the main chords is bolt connection, three sleeve joints are respectively arranged on the upper part and the lower part of the main chords for assembling bolts, the main chord adopts square pipes, and the connection mode ensures that the load is transmitted through the bolts under the condition that the tower body is bent and twisted, the bearing capacity of the bolts is small, the service life of the tower body after being built is short, and the dismounting and the mounting are inconvenient by adopting the bolt mode; the three forging sleeve joints are all required to be positioned independently, and the standard joint is difficult to weld; and the mounting holes on the sleeve joint need to be aligned during mounting, resulting in low mounting efficiency and relatively cumbersome.

Disclosure of Invention

To the problem that above-mentioned prior art exists, for convenient dismouting and welding process, provide an angle steel main chord whole welding standard festival, main chord and other connection web members all adopt the angle steel, and the joint is the forging steel, and joint and angle bar bottom on the main chord member all are opened and are used for installing the round pin axle, and the round pin axle hole axis is crisscross perpendicular, solves above-mentioned problem.

In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows: the integral welding standard section of the angle steel main chord comprises a plurality of main chords and other connecting web members fixed between the adjacent main chords, wherein each main chord member comprises angle steel and a joint fixed on the angle steel, and the integral welding standard section of the angle steel main chord is sequentially stacked up and down, so that the upper and lower adjacent main chords are connected together through a pin shaft, the other connecting web members adopt angle steel, and the joint is forged steel.

Further, the joint includes: the outer side plate A, the outer side plate B and the inner angle iron fixing plate are respectively provided with a pin shaft hole.

Further, the lower end of the angle iron is provided with pin shaft holes corresponding to the pin shaft holes of the outer side plate A and the outer side plate B.

Further, the outer side plate A and the outer side plate B are fixed at the outer side upper ends of two side edges of the angle steel, the inner angle iron fixing plate is fixed at the inner side upper ends of two side edges of the angle steel, and the lower ends of the main chord angle irons in the upper and lower adjacent main chord integral welding standard sections of the angle steel are inserted between the outer side plate A, the outer side plate B and the inner angle iron fixing plate and fixed through pin shafts.

Further, the pin shaft holes on the inner angle iron fixing plate correspond to the pin shaft holes on the outer side plate A and the outer side plate B one by one.

Further, the pin shaft holes of the outer side plate A and the outer side plate B are different in height, and the pin shaft holes of the outer side plate A and the pin shaft holes of the outer side plate B on the same main chord member are perpendicular in a staggered mode.

Furthermore, the angle steel main chord is integrally welded with the same side of the standard joint, and only one outer side plate A or outer side plate B is arranged.

Further, a reinforcing plate is further fixed on the pin shaft hole at the lower end of the angle iron.

The beneficial effects of the utility model are as follows:

the bearing capacity of the angle steel with the same cross-sectional area is larger than that of the square pipe, so that the strength of the integral welding standard section of the angle steel main chord is improved;

the pin shaft is adopted to connect and facilitate the disassembly and assembly of the standard section;

the outer side plate A, the outer side plate B and the inner angle iron fixing plate can play a role in positioning and guiding when the main chord member is connected, so that the installation efficiency is improved, partial load can be borne, and the strength of the tower body is further improved.

Drawings

FIG. 1 is a schematic view of a prior art primary chord structure;

FIG. 2 is a schematic view of an integral welding standard section of the angle steel main chord of the utility model;

1. a main chord; 2. a joint; 21. an outer panel A; 22. an outer panel B; 23. an inner angle iron fixing plate; 3. reinforcing plate.

Detailed Description

The present utility model will be further described in detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the detailed description and specific examples, while indicating the utility model, are intended for purposes of illustration only and are not intended to limit the scope of the utility model.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs, and the terms used herein in this description of the utility model are for the purpose of describing particular embodiments only and are not intended to be limiting of the utility model.

As shown in fig. 2, an angle steel main chord integral welding standard section is composed of 4 main chords 1 and other connecting web members welded between the adjacent main chords 1, the main chords 1 are composed of angle steel and joints 2 fixed on the angle steel, a plurality of the angle steel main chord integral welding standard sections are stacked up and down in sequence, the upper and lower adjacent main chords 1 are connected together through pin shafts, the other connecting web members adopt angle steel, the joints 2 are forged steel, square tubes with the same section area have smaller bearing capacity than the angle steel, and therefore the angle steel is selected.

Further in this example, the joint 2 includes: the outer side plate A21, the outer side plate B22 and the inner angle iron fixing plate 23 are respectively provided with a pin shaft hole, and the outer side plate A21, the outer side plate B22 and the inner angle iron fixing plate 23 are respectively provided with a pin shaft hole.

In this example, further, the lower end of the angle iron is provided with pin shaft holes corresponding to the pin shaft holes of the outer side plate A21 and the outer side plate B22.

In this example, further, the outer side plate a21 and the outer side plate B22 are fixed at the outer upper ends of the two side edges of the angle steel, the inner angle iron fixing plate 23 is fixed at the inner upper ends of the two side edges of the angle steel, and the lower ends of the angle irons of the main chords 1 in the integral welding standard sections of the upper and lower adjacent angle steel main chords are inserted between the outer side plate a21, the outer side plate B22 and the inner angle iron fixing plate 23 and fixed through pin shafts.

Further in this example, the pin holes on the inner angle iron fixing plate 23 are in one-to-one correspondence with the pin holes on the outer side plate a21 and the outer side plate B22.

In this example, the pin holes of the outer side plate a21 and the outer side plate B22 are different in height, and the pin holes on the outer side plate a21 and the pin holes on the outer side plate B22 on the same main chord member 1 are staggered and perpendicular in axis, so that the connection strength of the pin holes is improved.

In this example, further, the same side of the angle steel main chord integral welding standard joint is provided with only one outer side plate A21 or outer side plate B22, so that the torsion resistance of the tower body is improved.

Further in this example, still be fixed with reinforcing plate 3 on the lower extreme pin shaft hole of angle bar, reinforcing plate 3 improves the intensity in the lower extreme pin shaft hole of angle bar, and then guarantees the holistic atress intensity of body of the tower, improves life.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, or alternatives falling within the spirit and principles of the utility model.

Claims

1. The angle steel main chord integral welding standard knot is characterized by comprising a plurality of main chords and other connecting web members fixed between the adjacent main chords, wherein each main chord member is composed of angle steel and a joint fixed on the angle steel, and the plurality of angle steel main chord integral welding standard knots are sequentially stacked up and down, so that the upper and lower adjacent main chords are connected together through a pin shaft.

2. The angle steel main chord integral welding standard knot according to claim 1, wherein the joint comprises: the outer side plate A, the outer side plate B and the inner angle iron fixing plate are respectively provided with a pin shaft hole.

3. The angle steel main chord integral welding standard knot according to claim 2, wherein the lower end of the angle iron is provided with pin shaft holes corresponding to the pin shaft holes of the outer side plate A and the outer side plate B.

4. The integral welding standard joint for the main chord of the angle steel according to claim 3, wherein the outer side plate A and the outer side plate B are fixed at the outer side upper ends of two side edges of the angle steel, the inner angle iron fixing plate is fixed at the inner side upper ends of two side edges of the angle steel, and the lower ends of the angle irons of the main chord of the integral welding standard joint for the angle steel, which are adjacent up and down, are inserted between the outer side plate A, the outer side plate B and the inner angle iron fixing plate and are fixed through pin shafts.

5. The integral welding standard joint for the main chord of the angle steel according to claim 4, wherein the pin shaft holes on the inner angle iron fixing plate are in one-to-one correspondence with the pin shaft holes on the outer side plate A and the outer side plate B.

6. The integral welding standard joint for the main chord of the angle steel according to claim 2, wherein the pin shaft holes of the outer side plate A and the outer side plate B are different in height, and the pin shaft holes on the outer side plate A and the pin shaft holes on the outer side plate B on the same main chord are perpendicular in an axis stagger mode.

7. The angle steel main chord integral welding standard knot according to claim 1, wherein the angle steel main chord integral welding standard knot is provided with only one outer side plate A or outer side plate B on the same side.

8. The angle iron main chord integral welding standard knot according to claim 3, wherein a reinforcing plate is further fixed on the pin shaft hole at the lower end of the angle iron.