CN219058362U

CN219058362U - Tower crane standard knot

Info

Publication number: CN219058362U
Application number: CN202223427088.4U
Authority: CN
Inventors: 何斌业; 秦冬冬; 刘勇; 韦开宗
Original assignee: Guangdong Dingsheng Heavy Industry Machinery Co ltd
Current assignee: Guangdong Dingsheng Heavy Industry Machinery Co ltd
Priority date: 2022-12-19
Filing date: 2022-12-19
Publication date: 2023-05-23
Anticipated expiration: 2032-12-19

Abstract

The utility model discloses a standard section of a tower crane, which aims to be connected through a bolt and is more convenient to install, and the technical scheme is as follows: the tower crane standard knot comprises four main chords which are parallel to each other, wherein two adjacent main chords are connected through a web member, and the tower crane standard knot further comprises a connecting plate, wherein the connecting plate comprises a fixing part and a connecting part, and a first bolt hole is formed in the connecting part; the main chord member is a square tube and comprises two first side walls and two second side walls, the two first side walls are oppositely arranged, and the two second side walls are oppositely arranged; the lower end of the first side wall is provided with a second bolt hole, and the upper end of the second side wall is provided with a third bolt hole; the upper end and the lower end of the main chord are both fixed with two connecting plates; belongs to the technical field of tower crane equipment.

Description

Tower crane standard knot

Technical Field

The utility model belongs to the technical field of tower crane equipment, and particularly relates to a tower crane standard knot.

Background

The tower crane is a tower crane formed by sequentially stacking a plurality of standard knots, and the connection between the two standard knots basically depends on bolts.

For example, CN208516830U discloses a standard tower crane section, which comprises a supporting frame formed by four main chords arranged in parallel, wherein any two adjacent main chords are connected by a cross bar and/or an inclined web member, a connecting nut is arranged at the end of each main chord member, at least one reinforcing main chord member is arranged in the standard tower crane section, reinforcing rods are arranged in the reinforcing main chord members in a matching manner, and openings corresponding to the reinforcing rods in size are formed in the side surfaces of one end of each reinforcing main chord member.

The standard joint is a traditional bolt connection mode, and after the upper standard joint and the lower standard joint are well butted, the two standard joints are fixed together by bolts; when the bolts are connected, the pretightening force needs to be controlled, the operation is complicated, and the accurate control is difficult during high-altitude operation.

Disclosure of Invention

The utility model mainly aims to provide a standard section of a tower crane, which can be connected through a bolt and is convenient to install.

According to a first aspect of the utility model, there is provided a tower crane standard knot, comprising four main chords parallel to each other, two adjacent main chords being connected by a web member, and further comprising a connecting plate, wherein the connecting plate comprises a fixing part and a connecting part, and the connecting part is provided with a first bolt hole; the main chord member is square, and comprises two first side walls and two second side walls, wherein the two first side walls are oppositely arranged, and the two second side walls are oppositely arranged; the lower end of the first side wall is provided with a second bolt hole, and the upper end of the second side wall is provided with a third bolt hole;

the upper end and the lower end of the main chord are both fixed with two connecting plates;

the connecting plate at the upper end of the main chord member is a first connecting plate, the fixing part of the first connecting plate is fixed on the first side wall, the connecting part of the first connecting plate is higher than the upper end surface of the main chord member, and the first bolt holes of the two first connecting plates are coaxial;

the connecting plate that is located the lower extreme of main chord member is the second connecting plate, and the fixed part of second connecting plate is fixed on the second lateral wall, and the connecting portion of second connecting plate is less than the lower terminal surface of main chord member, and the first bolt hole of two second connecting plates is coaxial.

In the tower crane standard knot, the first side walls of the two main chords which are diagonally arranged are parallel to each other, and the first side walls of the two main chords which are not diagonally arranged are perpendicular to each other.

In the tower crane standard knot, one surface of the fixing part facing the main chord member is attached to the main chord member, and the fixing part is fixed on the main chord member through welding.

In the tower crane standard section, a gap is arranged between one surface of the connecting part facing the main chord member and the main chord member.

In the tower crane standard section, the distance between one surface of the connecting part facing the main chord member and the main chord member is 5-20mm.

In the tower crane standard section, one end of the connecting part, which is away from the fixing part, is arc-shaped.

One of the above technical solutions of the present utility model has at least one of the following advantages or beneficial effects:

in the utility model, the connecting structure of the standard knot is optimized, when in installation, four main chords of the target standard knot correspond to four main chords of the lower standard knot one by one, the lower end of the main chord of the target standard knot is matched with the upper end of the main chord of the lower standard knot, the first bolt hole of the second connecting plate of the target standard knot is aligned with the third bolt hole of the lower standard knot, and the bolt passes through the first bolt hole of the second connecting plate of the target standard knot and the third bolt hole of the lower standard knot; the second bolt hole of the target standard joint is aligned with the first bolt hole of the first connecting plate of the lower standard joint, and the bolt passes through the first bolt hole of the first connecting plate of the lower standard joint and the second bolt hole of the target standard joint, so that the target standard joint is fixed on the lower standard joint, bolts are not needed, but bolt connection is adopted, and the installation is simpler;

and connect two main chords through setting up the connecting plate, need not additionally design tenon, simplified the structure, it is more convenient also to make the installation.

Drawings

The utility model is further described below with reference to the drawings and examples;

FIG. 1 is a schematic view of a first embodiment of the present utility model;

fig. 2 is a front view of a first embodiment of the present utility model;

FIG. 3 is an enlarged view of a portion of A of FIG. 2 in accordance with a first embodiment of the present utility model;

fig. 4 is a schematic view of the structure of the first embodiment of the present utility model at the time of installation;

fig. 5 is a partial enlarged view of B of fig. 4 according to the first embodiment of the present utility model.

Wherein reference numerals for the respective figures:

1. a main chord; 11. a first sidewall; 111. a second pin hole; 12. a second sidewall; 121. a third pin hole; 2. a web member; 3. a connecting plate; a. a fixing part; b. a connection part; c. a first pin hole; 31. a first connection plate; 32. and a second connecting plate.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are exemplary only for explaining the present utility model and are not to be construed as limiting the present utility model.

The following disclosure provides many different embodiments, or examples, for implementing different aspects of the utility model.

Referring to fig. 1 to 5, in one embodiment of the present utility model, a standard tower crane section includes four main chords 1 parallel to each other, two adjacent main chords 1 are connected by a web member 2, and further includes a connecting plate 3, where the connecting plate 3 includes a fixing portion a and a connecting portion b, and the connecting portion b is provided with a first bolt hole c; the main chord member 1 is a square tube, the main chord member 1 comprises two first side walls 11 and two second side walls 12, the two first side walls 11 are oppositely arranged, and the two second side walls 12 are oppositely arranged; the lower end of the first side wall 11 is provided with a second bolt hole 111, and the upper end of the second side wall 12 is provided with a third bolt hole 121;

two connecting plates 3 are fixed at the upper end and the lower end of the main chord member 1;

the connecting plate 3 positioned at the upper end of the main chord member 1 is a first connecting plate 31, the fixing part a of the first connecting plate 31 is fixed on the first side wall 11, the connecting part b of the first connecting plate 31 is higher than the upper end surface of the main chord member 1, and the first bolt holes c of the two first connecting plates 31 are coaxial;

the connecting plate 3 at the lower end of the main chord member 1 is a second connecting plate 32, the fixing portion a of the second connecting plate 32 is fixed on the second side wall 12, the connecting portion b of the second connecting plate 32 is lower than the lower end face of the main chord member 1, and the first bolt holes c of the two second connecting plates 32 are coaxial.

Taking an installation target standard knot as an example, when the installation is carried out, four main chords 1 of the target standard knot correspond to four main chords 1 of the lower standard knot one by one, the lower end of the main chord 1 of the target standard knot is matched with the upper end of the main chord 1 of the lower standard knot, the first bolt hole c of the second connecting plate 32 of the target standard knot is aligned with the third bolt hole 121 of the lower standard knot, and bolts penetrate through the first bolt hole c of the second connecting plate 32 of the target standard knot and the third bolt hole 121 of the lower standard knot; the second bolt hole 111 of the target standard joint is aligned with the first bolt hole c of the first connecting plate 31 of the lower standard joint, and the bolt passes through the first bolt hole c of the first connecting plate 31 of the lower standard joint and the second bolt hole 111 of the target standard joint, so that the target standard joint is fixed on the lower standard joint without using bolts, but adopts bolt connection, and the installation is simpler; in order to improve the strength, the diameter of the used bolt is larger, and a corresponding cotter pin is arranged on the bolt to prevent the bolt from moving;

the clamping groove is formed between the two connecting parts b at the end part of the main chord member 1, so that the clamping groove has a positioning function, is convenient to accommodate the end part of the other main chord member 1, can connect the two main chord members 1, limits the shaking of the main chord members 1, and simplifies the structure and ensures that the installation is more convenient by arranging the connecting plate 3 without additional tenon design.

In the present embodiment, the first side walls 11 of the two main chords 1 arranged diagonally are parallel to each other, that is, the axial directions of the first pin holes c on the first connection plates 31 of the two main chords 1 arranged diagonally are parallel to each other; the first side walls 11 of the two main chords 1 which are not diagonally arranged are mutually perpendicular, that is, the axial directions of the first bolt holes c on the first connecting plates 31 of the two main chords 1 which are not diagonally arranged are mutually perpendicular, so that the upper ends and the lower ends of the standard knots are consistent, the standard knots can be used universally, the upper ends and the lower ends do not need to be distinguished during installation, and the installation is more convenient.

In this embodiment, the fixing portion a and the connecting portion b are integrally formed in a butt joint in sequence, one surface of the fixing portion a facing the main chord 1 is attached to the main chord 1, the fixing portion a is fixed to the main chord 1 by welding, and the connecting portion b extends to the outside of the main chord 1.

Preferably, a gap is provided between the side of the connecting portion b facing the main chord 1 and the main chord 1, that is, the connecting portion b does not fit onto the main chord 1 of another standard knot when it is mated with the other standard knot, so that the main chord 1 is conveniently inserted into the clamping groove formed by the two connecting portions b.

Typically, the distance between the side of the connection b facing the main chord 1 and the main chord 1 is 5-20mm.

In this embodiment, since the connecting portion b extends beyond the main chord member 1, the worker is easy to collide during installation, and therefore, the end of the connecting portion b facing away from the fixing portion a is arc-shaped, reducing the risk of being scratched.

While embodiments of the present utility model have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the utility model, the scope of which is defined by the claims and their equivalents.

Claims

1. The tower crane standard knot comprises four main chords (1) which are parallel to each other, wherein two adjacent main chords (1) are connected through a web member (2), and the tower crane standard knot is characterized by further comprising a connecting plate (3), wherein the connecting plate (3) comprises a fixing part (a) and a connecting part (b), and a first bolt hole (c) is formed in the connecting part (b); the main chord member (1) is a square tube, the main chord member (1) comprises two first side walls (11) and two second side walls (12), the two first side walls (11) are oppositely arranged, and the two second side walls (12) are oppositely arranged; the lower end of the first side wall (11) is provided with a second bolt hole (111), and the upper end of the second side wall (12) is provided with a third bolt hole (121);

two connecting plates (3) are fixed at the upper end and the lower end of the main chord member (1);

the connecting plate (3) positioned at the upper end of the main chord member (1) is a first connecting plate (31), the fixed part (a) of the first connecting plate (31) is fixed on the first side wall (11), the connecting part (b) of the first connecting plate (31) is higher than the upper end surface of the main chord member (1), and the first bolt holes (c) of the two first connecting plates (31) are coaxial;

the connecting plates (3) positioned at the lower ends of the main chords (1) are second connecting plates (32), the fixing parts (a) of the second connecting plates (32) are fixed on the second side walls (12), the connecting parts (b) of the second connecting plates (32) are lower than the lower end surfaces of the main chords (1), and the first bolt holes (c) of the two second connecting plates (32) are coaxial.

2. A tower crane module according to claim 1, wherein the first side walls (11) of two of said main chords (1) arranged diagonally are parallel to each other and the first side walls (11) of two of said main chords (1) not arranged diagonally are perpendicular to each other.

3. The tower crane standard knot according to claim 1, characterized in that the surface of the fixing part (a) facing the main chord (1) is attached to the main chord (1), and the fixing part (a) is fixed on the main chord (1) by welding.

4. A tower crane module according to claim 1, wherein a gap is provided between the main chord (1) and a surface of the connecting portion (b) facing the main chord (1).

5. A tower crane module according to claim 4, wherein the distance between the side of the connecting portion (b) facing the main chord (1) and the main chord (1) is 5-20mm.

6. The tower crane module according to claim 1, wherein the end of the connecting portion (b) facing away from the fixing portion (a) is arc-shaped.