Splicing joint of primary truss and secondary truss

Abstract

The utility model relates to a primary and secondary truss splicing node, which comprises primary trusses, secondary trusses and secondary trusses, the secondary truss is vertically crossed with the primary truss, an upper chord and a lower chord of the secondary truss adopt square steel tubes, positioning sleeves are fixed in ports of the square steel tubes, the positioning sleeves abut against the upper sides and the lower sides of the ports of the square steel tubes, first bolt and nut assemblies penetrate through the positioning sleeves, and the first bolt and nut assemblies are screwed on the upper sides and the lower sides of the ports of the square steel tubes; the first splice plates are fixed at the two ends of the upper chord and the lower chord of the secondary truss, and one ends of the first splice plates are arranged in the square steel tubes and abut against the sides of the positioning sleeves; the hoops are fixed on the upper chord and the lower chord of the main truss at intervals, and second splice plates are arranged on the sides of the hoops and fixed with the first splice plates through second bolt and nut assemblies. The position of the secondary truss can be adjusted, the primary truss and the secondary truss are convenient to disassemble, and turnover is facilitated.

Description

Technical Field

[0001] The utility model relates to the field of trusses, in particular to a primary and secondary truss splicing node. Background Art

[0002] For example, Chinese utility model CN 215759655 U discloses a main-secondary truss node connection structure for a steel warehouse. Several main trusses are arranged sequentially along the length of the warehouse, with several horizontally connected secondary trusses arranged between adjacent main trusses. X-shaped diagonal connecting rods are arranged every several main trusses. These connecting rods are continuously distributed between the main trusses on both sides, forming connection nodes at the junction of the main trusses and secondary trusses. These connection nodes are classified as either Class I or Class II nodes based on whether the connecting rods are provided. The connection nodes on the main trusses are either Class I or Class II nodes. The node positions are difficult to adjust, which is not conducive to adjusting the position of the secondary trusses. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a primary and secondary truss splicing node, which is convenient for adjusting the position of the secondary truss, and the primary and secondary trusses are convenient for disassembly, which is conducive to turnover.

[0004] In order to solve the above problems, a primary and secondary truss splicing node is adopted, which includes:

[0005] Main trusses, which are spaced parallel to each other;

[0006] The secondary truss is arranged perpendicularly to the main truss, and its upper and lower chords are made of square steel tubes. Positioning sleeves are fixed in the ends of the square steel tubes, and the positioning sleeves are pressed against the upper and lower sides of the ends of the square steel tubes. The first bolt and nut assemblies are passed through the positioning sleeves, and the first bolt and nut assemblies are tightened on the upper and lower sides of the ends of the square steel tubes;

[0007] The first splicing plate is fixed to both ends of the upper and lower chords of the secondary truss, one end of which is embedded in the square steel tube and is tightened by the side of the positioning sleeve;

[0008] The hoop is fixed at intervals on the upper chord and the lower chord of the main truss, and a second splicing plate is arranged on the side thereof and is fixed to the first splicing plate through a second bolt and nut assembly.

[0009] With such a structure, the position of the clamp can be adjusted on the main truss and then tightened. The clamp is used to splice with the secondary truss, thereby facilitating the adjustment of the position of the secondary truss. After the side of the positioning sleeve is pressed against the first splicing plate, it is convenient for welding and fixing the first splicing plate. After the first splicing plate and the second splicing plate are fixed, the cross-splicing of the main truss and the secondary truss is realized.

[0010] As a further improvement of the present invention, end plates are fixed at both ends of the upper chord and the lower chord of the main truss, and bolt holes are provided on the end plates.

[0011] With such a structure, the end plate is easy to be spliced with the corbel.

[0012] As a further improvement of the present invention, both ends of the lower chord of the main truss extend beyond both ends of the upper chord, and lifting ears are fixed on the extending portions.

[0013] Such a structure makes it easy to lift the entire truss and to assemble it.

[0014] As a further improvement of the present invention, the first splicing plate is U-shaped, the middle space of which is passed through by a positioning sleeve, and the second splicing plate is tightened against the positioning sleeve and then spliced with the first splicing plate through a second bolt and nut assembly.

[0015] With this structure, the U-shaped first splicing plate is more compatible with the positioning sleeve, and after the second splicing plate is pressed against the positioning sleeve and then spliced with the first splicing plate, the first splicing plate, the second splicing plate and the positioning sleeve form a self-locking structure, which can be fastened without welding.

[0016] As a further improvement of the present invention, an angle steel is fixed between the second splicing plate and the side of the hoop, one leg of the angle steel is tightened to the second splicing plate through a third bolt and nut assembly, and the other leg is tightened to the side of the hoop through a bolt.

[0017] Such a structure facilitates strengthening and fixing the second splicing plate and the clamp.

[0018] As a further improvement of the present invention, ribs are welded on the angle steel.

[0019] With this structure, the ribs further strengthen the angle steel.

[0020] The utility model is convenient for adjusting the distance between the secondary trusses, and the primary and secondary trusses are convenient for disassembly, which is beneficial to turnover. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 Schematic diagram of the structure of the embodiment.

[0022] Figure 2 Schematic diagram of the main truss structure.

[0023] Figure 3 Schematic diagram of the local structure of the secondary truss.

[0024] Figure numerals: 1. main truss; 2. secondary truss; 201. positioning sleeve; 3. first splicing plate; 4. clamp; 401. second splicing plate; 5. first bolt and nut assembly; 6. second bolt and nut assembly; 7. lifting ear; 8. angle steel; 9. third bolt and nut assembly; 10. bolt; 11. rib; 12. end plate. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0026] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or components referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the present invention; the terms "first", "second", and "third" are only used for descriptive purposes and should not be understood as indicating or implying relative importance; in addition, unless otherwise expressly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, an indirect connection through an intermediate medium, or it can be internal communication between two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] Example 1

[0028] like Figure 1-Figure 3 As shown, a primary and secondary truss splicing node comprises:

[0029] Main trusses 1, which are arranged in parallel at intervals;

[0030] The secondary truss 2 is arranged perpendicularly to the main truss 1, and its upper and lower chords are made of square steel tubes. Positioning sleeves 201 are fixed in the ends of the square steel tubes. The positioning sleeves 201 are tightened against the upper and lower sides of the ends of the square steel tubes. The first bolt and nut assemblies 5 are passed through the positioning sleeves and tightened on the upper and lower sides of the ends of the square steel tubes.

[0031] The first splicing plate 3 is fixed to both ends of the upper and lower chords of the secondary truss 2, one end of which is embedded in the square steel tube and is tightened by the side of the positioning sleeve 201;

[0032] The clamp 4 is fixed at intervals on the upper chord and the lower chord of the main truss 1 , and a second splicing plate 401 is provided on its side and fixed to the first splicing plate 3 through a second bolt and nut assembly 6 .

[0033] With such a structure, the position of the clamp 4 on the main truss 1 can be adjusted and then tightened. The clamp 4 is used to splice with the secondary truss 2, so as to facilitate the adjustment of the position of the secondary truss 2. After the side of the positioning sleeve 201 is pressed against the first splicing plate 3, it is convenient for the welding and fixation of the first splicing plate 3. After the first splicing plate 3 and the second splicing plate 401 are fixed, the cross-splicing of the main truss 1 and the secondary truss 2 is realized.

[0034] In this embodiment, end plates 12 are fixed at both ends of the upper chord and the lower chord of the main truss 1 , and bolt holes are provided on the end plates 12 .

[0035] With such a structure, the end plate 12 is easy to be spliced with the corbel.

[0036] In this embodiment, both ends of the lower chord of the main truss 1 extend beyond both ends of the upper chord, and lifting ears 7 are fixed to the extending portions.

[0037] Such a structure makes it easy to lift the entire truss and to assemble it.

[0038] In this embodiment, the first splicing plate 3 is U-shaped, with the positioning sleeve 201 passing through the middle space thereof. The second splicing plate 401 is pressed against the positioning sleeve 201 and then spliced with the first splicing plate 3 by the second bolt and nut assembly 6 .

[0039] With such a structure, the U-shaped first splicing plate 3 is more compatible with the positioning sleeve 201, and after the second splicing plate 401 is pressed against the positioning sleeve 201 and then spliced with the first splicing plate 3, the first splicing plate 3, the second splicing plate 401 and the positioning sleeve 201 form a self-locking structure, which can be fastened without welding.

[0040] In this embodiment, an angle steel 8 is fixed between the second splicing plate 401 and the side of the hoop 4. One leg of the angle steel 8 is tightened to the second splicing plate 401 through the third bolt and nut assembly 6, and the other leg is tightened to the side of the hoop 4 through the bolt 10.

[0041] Such a structure facilitates strengthening and fixing the second splicing plate 401 and the clamp 4 .

[0042] In this embodiment, ribs 11 are welded to the angle steel 8 .

[0043] With such a structure, the ribs 11 further strengthen the angle steel 8 .

[0044] The utility model is convenient for adjusting the distance between the secondary trusses, and the primary and secondary trusses are convenient for disassembly, which is beneficial to turnover.

[0045] The above content is a further detailed description of the present invention in conjunction with specific preferred embodiments, and the specific implementation of the present invention cannot be considered to be limited to these descriptions. For those skilled in the art of the present invention, it is possible to make several equivalent substitutions or obvious modifications without departing from the concept of the present invention, and the performance or use are the same, and all of them should be considered to fall within the scope of protection of the present invention.

Claims

1. A primary and secondary truss splicing node, characterized in that include: Main trusses (1) are arranged in parallel at intervals; The secondary truss (2) is arranged perpendicularly to the main truss (1), and its upper and lower chords are made of square steel tubes. Positioning sleeves (201) are fixed in the ends of the square steel tubes, and the positioning sleeves (201) are pressed against the upper and lower sides of the ends of the square steel tubes. A first bolt and nut assembly (5) is passed through the positioning sleeves, and the first bolt and nut assembly (5) is tightened on the upper and lower sides of the ends of the square steel tubes. A first splicing plate (3) is fixed to both ends of the upper chord and the lower chord of the secondary truss (2), one end of which is embedded in the square steel tube and is pressed against the side of the positioning sleeve (201); The hoop (4) is fixed at intervals on the upper chord and the lower chord of the main truss (1), and a second splicing plate (401) is provided on its side and fixed to the first splicing plate (3) through a second bolt and nut assembly (6).

2. The primary and secondary truss joint according to claim 1, characterized in that End plates (12) are fixed at both ends of the upper chord and the lower chord of the main truss (1), and bolt holes are provided on the end plates (12).

3. The primary and secondary truss joint according to claim 1, characterized in that The two ends of the lower chord of the main truss (1) extend beyond the two ends of the upper chord, and lifting ears (7) are fixed on the extending portions.

4. The primary and secondary truss joint according to claim 1, characterized in that The first splicing plate (3) is U-shaped, with a positioning sleeve (201) passing through its inner space. The second splicing plate (401) is pressed against the positioning sleeve (201) and then spliced with the first splicing plate (3) via a second bolt and nut assembly (6).

5. The primary and secondary truss splicing node according to claim 1, characterized in that An angle steel (8) is fixedly arranged between the second splicing plate (401) and the side of the hoop (4); one limb of the angle steel (8) is tightened to the second splicing plate (401) through a third bolt and nut assembly (9), and the other limb is tightened to the side of the hoop (4) through a bolt (10).

6. The primary and secondary truss splicing node according to claim 5, characterized in that A rib plate (11) is welded on the angle steel (8).

Images