Connecting joint for lattice beam column extension

Abstract

The utility model discloses a connecting node for lattice beam column extension, which belongs to the technical field of substation extension and is mainly used for lattice beam column connection in substation extension. The technical problem to be solved is to provide a connecting node for lattice type beam column extension, the connecting node comprises a lattice type foundation framework column, an extension framework beam and a connecting piece, and the extension framework beam is perpendicular to the lattice type foundation framework column; an L-shaped connecting piece is arranged between the two extension framework beams, the transverse plate is provided with a long hole A in the width direction of the transverse plate, the longitudinal plate is provided with a long hole B in the length direction of the longitudinal plate, the long hole A is provided with a bolt A connected with the extension framework beams, and the long hole B is provided with a bolt B connected with a lattice type foundation framework column. The connection node provided by the utility model can be adjusted according to the actual size of the lattice type foundation framework column, is suitable for stable connection of the extension framework beam and the lattice type foundation framework column with different size errors, reduces the measurement precision requirement, and realizes rapid installation and fixation between the extension framework beam and the lattice type foundation framework column.

Description

Technical Field

[0001] The utility model relates to the technical field of transformer substation expansion, in particular to a connection node used for lattice beam-column expansion. Background Art

[0002] In the expansion project of the substation, new expansion frame beams are often connected to the existing foundation frame columns, and then the new expansion frame beams are connected to the newly added frame columns, thereby achieving the purpose of substation expansion.

[0003] When the foundation frame column adopts a lattice-type foundation frame column, that is, Figure 1 When the lattice foundation frame column 1 is formed by the foundation column 11 and the foundation tie bar 12, when it is expanded, the expansion frame beam 2 and the foundation column 11 in the lattice foundation frame column 1 usually adopt a bolt-welded mixed node or a fully bolted node. When connected, in order to ensure the connection stability between the expansion frame beam 2 and the lattice foundation frame column 1, the length and width of the expansion frame beam 2 need to be accurately matched with the foundation column 11 of the lattice foundation frame column 1, so that the bolt installation holes reserved on the expansion frame beam 2 and the foundation column 11 of the lattice foundation frame column 1 can be aligned, so as to be fixed and connected with high-strength bolts later. However, before the installation of the newly added expansion frame beam, the power facilities on site are all powered on, and the surveyors cannot measure at close range, and cannot accurately measure and obtain the relevant dimensions required for the design, and there are also errors in the processing of the expansion frame beam. These factors make it difficult for the expansion frame beam to achieve accurate matching with the lattice foundation frame column when installing the expansion frame beam.

[0004] To solve the above problem, the commonly used method is to increase the diameter of the connecting bolt hole or set an elliptical hole so that the bolt can pass through the pre-set hole to connect the lattice foundation frame column and the expansion frame beam. However, when the error is large, the above method cannot effectively solve the problem of connection matching between the expansion frame beam and the foundation column of the lattice foundation frame column. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide a connection node for the expansion of lattice beams and columns, which is mainly used for the connection of lattice beams and columns in the expansion of substations, and the length and width of the connection node can be adjusted during the installation process to achieve the purpose of quickly installing and fixing the expansion frame beam while ensuring the connection stability between the expansion frame beam and the lattice foundation frame column.

[0006] The utility model discloses a connection node for lattice beam-column expansion, comprising a foundation column and a foundation tie bar, wherein the foundation column and the foundation tie bar are combined to form a lattice foundation frame column, one side of the lattice foundation frame column is connected with an expansion frame beam, the expansion frame beam and the foundation tie bar are arranged one by one correspondingly and are arranged vertically on the lattice foundation frame column along the extension direction of the foundation tie bar, a threaded hole A is opened at one end of the expansion frame beam close to the lattice foundation frame column, and a threaded hole B is arranged on the lattice foundation frame column; a threaded hole for connecting the lattice foundation frame column with the expansion frame beam is arranged between every two expansion frame beams located on the same horizontal plane. A connected connecting piece, the connecting piece includes a transverse plate and a longitudinal plate, the transverse plate and the longitudinal plate are perpendicular to each other and are L-shaped, the long side of the longitudinal plate is connected to the long side of the transverse plate, the transverse plate is provided with a long hole A, there are two long holes A and they are arranged on both sides of the transverse plate along the width direction of the transverse plate, the longitudinal plate is provided with a long hole B, there are two long holes B and they are arranged on both sides of the longitudinal plate along the length direction of the longitudinal plate, a bolt A is provided between the transverse plate and the expansion frame beam, the bolt A passes through the long hole A and is threadedly connected to the threaded hole A, a bolt B is provided between the longitudinal plate and the lattice foundation frame column, the bolt B passes through the long hole B and is threadedly connected to the threaded hole B.

[0007] Furthermore, the width of the transverse plate is greater than the width of the longitudinal plate.

[0008] Furthermore, the number of the threaded holes A is at least two, and the number of the threaded holes B is at least two.

[0009] Furthermore, reinforcing ribs are provided between the transverse plates and the longitudinal plates.

[0010] Furthermore, the width of the long hole A is greater than the screw diameter of the bolt A and smaller than the nut diameter of the bolt A; the width of the long hole B is greater than the screw diameter of the bolt B and smaller than the nut diameter of the bolt B.

[0011] Furthermore, the lattice-type foundation frame columns, expansion frame beams and connecting parts are all made of steel.

[0012] The beneficial effects of the utility model are as follows: an L-shaped connecting piece is provided, and a long hole A provided along the width direction of the horizontal plate and a long hole B provided along the length direction of the vertical plate are respectively provided on the horizontal plate and the vertical plate of the connecting piece, the long hole A cooperates with the threaded hole A provided on the expansion frame beam, and the long hole B cooperates with the threaded hole B provided on the lattice foundation frame column, and the bolts in the long hole A and the long hole B are loosened so that the bolts can slide in the long hole A and the long hole B, that is, the connecting piece can be adjusted according to the actual size of the lattice foundation frame column, so that the connecting piece can be applicable to the situation where there are expansion frame beams and lattice foundation frame columns with different size errors, the requirements for measurement accuracy are reduced, the length and width of the connection node can be adjusted during the installation process, and the expansion frame beam can be quickly installed and fixed while ensuring the connection stability between the expansion frame beam and the lattice foundation frame column. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 : Structural diagram of lattice foundation frame column;

[0014] Figure 2 : Schematic diagram of the connection node structure provided by the utility model;

[0015] Figure 3 : A schematic diagram of the structure of the connecting piece provided by the utility model;

[0016] Figure 4 : A schematic diagram of the structure of the connector provided by the utility model after the reinforcing ribs are applied;

[0017] Figure numerals: 1-lattice foundation frame column; 11-foundation column; 12-foundation tie bar; 2-expansion frame beam; 3-connector; 31-transverse plate; 311-long hole A; 312-bolt A; 32-longitudinal plate; 321-long hole B; 322-bolt B; 33-reinforcement rib. DETAILED DESCRIPTION

[0018] The utility model is further described below.

[0019] The utility model provides a connection node for lattice beam-column expansion, which is mainly used for the connection of lattice beam-column in substation expansion, including a foundation column 11 and a foundation tie bar 12, wherein the foundation column 11 and the foundation tie bar 12 enclose a lattice foundation frame column 1, and an expansion frame beam 2 is connected to one side of the lattice foundation frame column 1, and the expansion frame beam 2 is arranged one by one with the foundation tie bar 12 and is vertically arranged on the lattice foundation frame column 1 along the extension direction of the foundation tie bar 12, and a threaded hole A is opened at one end of the expansion frame beam 2 close to the lattice foundation frame column 1, and a threaded hole B is opened on the lattice foundation frame column 1, and a connecting piece 3 for connecting with the lattice foundation frame column 1 is arranged between every two expansion frame beams 2 located in the same horizontal plane, and the connecting piece 3 is used for connecting with the lattice foundation frame column 1. The connecting member 3 includes a transverse plate 31 and a longitudinal plate 32, which are perpendicular to each other and form an L shape. The long side of the longitudinal plate 32 is connected to the long side of the transverse plate 31. A long hole A311 is opened on the transverse plate 31. There are two long holes A311 and they are arranged on both sides of the transverse plate 31 along the width direction of the transverse plate 31. A long hole B321 is opened on the longitudinal plate 32. There are two long holes B321 and they are arranged on both sides of the longitudinal plate 32 along the length direction of the longitudinal plate 32. A bolt A312 is provided between the transverse plate 31 and the expansion frame beam 2. The bolt A312 passes through the long hole A311 and is threadedly connected to the threaded hole A. A bolt B322 is provided between the longitudinal plate 32 and the lattice foundation frame column 1. The bolt B322 passes through the long hole B321 and is threadedly connected to the threaded hole B.

[0020] The setting position of the expansion frame beam 2 is set according to the required expansion direction of the substation. Specifically, Figure 2As shown, the expansion frame beam 2 is arranged in the extension direction of the foundation tie bar 12 and is perpendicular to the lattice foundation frame column 1, specifically, it is vertically arranged on the foundation column 11, and a connector 3 for connecting with the lattice foundation frame column 1 is arranged between every two expansion frame beams 2 located in the same horizontal plane, and four expansion frame beams 2 located in adjacent horizontal planes enclose a lattice frame beam for expanding the substation; a threaded hole B is provided on the lattice foundation frame column 1, and the setting point of the threaded hole B is set according to the expansion beam installation point planned by the preliminary measurement of the surveyor, and a threaded hole A is opened at one end of the expansion frame beam 2 close to the lattice foundation frame column 1, and an L-shaped connector 3 is adopted. The expansion frame beam 2 is connected to the lattice foundation frame column 1, that is, the transverse plate 31 in the connecting member 3 is connected to the expansion frame beam 2, and the longitudinal plate 32 is connected to the lattice foundation frame column 1; specifically, two long holes A311 arranged along the width direction a of the transverse plate 31 are opened on both sides of the transverse plate 31, and two long holes B321 arranged along the length direction b of the longitudinal plate 32 are opened on both sides of the longitudinal plate 32; the transverse plate 31 and the expansion frame beam 2 are connected by bolts A312, and the bolts A312 pass through the long holes A311 and are threadedly connected to the threaded holes A; the longitudinal plate 32 and the lattice foundation frame column 1 are connected by bolts B322, and the bolts B322 pass through the long holes B321 and are threadedly connected to the threaded holes B. Specifically, when the expansion frame beam 2 and the lattice foundation frame column 1 are connected by the connecting member 3, it is first determined that the long hole B321 can cover the threaded hole B, so that the longitudinal plate 32 of the connecting member 3 is connected to the lattice foundation member column. Specifically, Figure 2 , Figure 3As shown, since the long hole B321 is opened along the length direction b of the longitudinal plate 32, it is sufficient to ensure that the long hole B321 and the threaded hole B are at the same height, and the bolt B322 is passed through the long hole B321 and threadedly connected to the threaded hole B. At this time, the bolt B322 does not completely fix the longitudinal plate 32 and the lattice foundation frame column 1, and the connecting plate can slide along the direction of the long hole B321. At this time, the cross plate 31 is connected to the expansion frame beam 2. Specifically, since the long hole A311 is set along the width direction of the cross plate 31, when the connecting member 3 is placed on the expansion frame beam 2, the long hole A311 will cover a section of the expansion frame beam 2, that is, the threaded hole A will be within the coverage range of the long hole A311. At this time, the bolt A312 located in the long hole A311 is slid so that the bolt A312 slides to the position of the threaded hole A. And it is threadedly connected with the threaded hole A. Even if the long hole A311 at the beginning covers the threaded hole A, the connecting piece 3 can be moved along the length direction of the horizontal plate 31 so that the long hole A311 covers the threaded hole A. At this time, since the long hole B321 is opened along the length direction of the longitudinal plate 32, when the bolt B322 has not completely fixed the longitudinal plate 32 and the lattice foundation frame column 1, the connecting piece 3 can be moved along the length direction of the horizontal plate 31, and the movement will not affect the correspondence between the long hole B321 and the threaded hole B. At this time, the bolt A312 is used to fix the horizontal plate 31 and the expansion frame beam 2, and the bolt B322 fixes the longitudinal plate 32 and the lattice foundation frame column 1. In this way, the connection and fixation of the expansion frame beam 2 and the lattice foundation frame column 1 can be completed, and the next step of welding and fixation can be carried out. By opening a long hole A311 on the transverse plate 31 along the width direction of the transverse plate 31 and opening a long hole B321 on the longitudinal plate 32 along the length direction of the longitudinal plate 32, the connecting member 3 can be applied to the situation where there are expansion frame beams 2 and lattice foundation frame columns 1 with different size errors, thereby reducing the requirements for measurement accuracy, and realizing the adjustment of the length and width of the connection node during the installation process, thereby ensuring the stability of the connection between the expansion frame beam 2 and the lattice foundation frame column 1 while realizing the rapid installation and fixation of the expansion frame beam 2.

[0021] Since the long hole A311 is arranged along the width direction of the horizontal plate 31, in order to ensure that the long hole A311 can cover all the ranges of the threaded holes A opened on the expansion frame beam 2, and to ensure that the bolts A312 can pass through the long hole A311 and connect with the threaded holes A, the fast connection and fixation between the connecting member 3 and the expansion frame beam 2 is realized. Figure 3 As shown, the width of the transverse plate 31 is greater than the width of the longitudinal plate 32 .

[0022] To ensure the connection stability between the connector 3 and the expansion building beam and the lattice foundation frame column 1, Figure 2As shown, the number of the threaded holes A is at least two, and the number of the threaded holes B is at least two. By setting a plurality of threaded holes A and threaded holes B, on the one hand, the connection stability can be ensured, and on the other hand, it can also be ensured that the coverage range of the long holes A311 and the long holes B321 can cover at least one threaded hole A and threaded hole B, so that the installation position of the bolts A312 and the bolts B322 can be quickly found, and the connecting piece 3, the expansion building beam, and the lattice foundation frame column 1 can be connected.

[0023] In order to improve the overall load capacity of the connecting member 3, as Figure 4 As shown, a reinforcing rib 33 is provided between the transverse plate 31 and the longitudinal plate 32 , and the reinforcing rib 33 can be connected to the transverse plate 31 and the longitudinal plate 32 by welding.

[0024] To facilitate the position adjustment of the bolts A312 and B322 in the long holes A311 and B321, the width of the long hole A311 is greater than the screw diameter of the bolt A312 and smaller than the nut diameter of the bolt A312; the width of the long hole B321 is greater than the screw diameter of the bolt B322 and smaller than the nut diameter of the bolt B322. By controlling the width of the long holes A311 and B321, the bolts A312 and B322 will not pass through the long holes A311 and B321 due to excessive tightening, thereby ensuring the connection stability and facilitating the sliding adjustment of the bolts A312 and B322 along the long holes A311 and B321.

[0025] In order to ensure the connection stiffness and stability of the connection nodes, the lattice-type foundation frame column 1, the expansion frame beam 2 and the connection piece 3 are all made of steel. The use of steel material can save costs and ensure the stability of the bolt connection.

Claims

1. A connection node for lattice beam-column expansion, characterized in that: The invention comprises a foundation column (11) and a foundation tie bar (12), wherein the foundation column (11) and the foundation tie bar (12) are combined to form a lattice foundation frame column (1), one side of the lattice foundation frame column (1) is connected to an expansion frame beam (2), the expansion frame beam (2) and the foundation tie bar (12) are arranged one by one correspondingly and are arranged vertically on the lattice foundation frame column (1) along the extension direction of the foundation tie bar (12), a threaded hole A is provided at one end of the expansion frame beam (2) close to the lattice foundation frame column (1), and a threaded hole B is provided on the lattice foundation frame column (1); a connecting piece (3) for connecting to the lattice foundation frame column (1) is provided between every two expansion frame beams (2) located on the same horizontal plane, and the connecting piece (3) comprises a transverse plate (31) and a longitudinal plate (32), and the transverse plate (31) and the longitudinal plate (32) are connected to each other. The plates (32) are perpendicular to each other and are L-shaped. The long side of the longitudinal plate (32) is connected to the long side of the transverse plate (31). The transverse plate (31) is provided with a long hole A (311). There are two long holes A (311) and they are arranged on both sides of the transverse plate (31) along the width direction of the transverse plate (31). The longitudinal plate (32) is provided with a long hole B (321). There are two long holes B (321) and they are arranged on both sides of the longitudinal plate (32) along the length direction of the longitudinal plate (32). Bolts A (312) are provided between the transverse plate (31) and the expansion frame beam (2). The bolts A (312) pass through the long holes A (311) and are threadedly connected to the threaded holes A. Bolts B (322) are provided between the longitudinal plate (32) and the lattice foundation frame column (1). The bolts B (322) pass through the long holes B (321) and are threadedly connected to the threaded holes B.

2. A connection node for lattice beam-column expansion according to claim 1, characterized in that: The width of the transverse plate (31) is greater than the width of the longitudinal plate (32).

3. A connection node for lattice beam-column expansion according to claim 1, characterized in that: The number of the threaded holes A is at least two, and the number of the threaded holes B is at least two.

4. A connection node for lattice beam-column expansion according to claim 1, characterized in that: A reinforcing rib (33) is provided between the transverse plate (31) and the longitudinal plate (32).

5. A connection node for lattice beam-column expansion according to claim 1, characterized in that: The width of the long hole A (311) is greater than the diameter of the screw rod of the bolt A (312) and smaller than the diameter of the nut of the bolt A (312); the width of the long hole B (321) is greater than the diameter of the screw rod of the bolt B (322) and smaller than the diameter of the nut of the bolt B (322).

6. A connection node for lattice beam-column expansion as claimed in any one of claims 1 to 5, characterized in that: The lattice-type foundation frame columns (1), the expansion frame beams (2) and the connecting parts (3) are all made of steel.

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