Steel pipe net rack joint component

Abstract

This utility model relates to a steel pipe space frame node component, belonging to the technical field of steel pipe space frame nodes. It includes a bolt ball, high-strength bolts, and sleeves. At least one set of steel pipes are symmetrically arranged on the outer side of the bolt ball, and an outer casing component is installed on the outer side of two of the steel pipes. The outer casing component includes an upper support and a lower support, which wrap around the upper and lower sides of the bolt ball and the steel pipes. This utility model increases the load-bearing capacity at the node by using a bolt on the upper support that passes through the steel pipe, a limiting block, and a limiting plate on the lower support, all secured by a nut. It allows for on-site installation without welding, has a wide range of applications, saves materials, and is highly operable.

Description

Technical Field

[0001] This utility model relates to the field of steel pipe space frame node technology, specifically to a steel pipe space frame node component. Background Technology

[0002] Bolted ball joints consist of components such as a ball, high-strength bolts, sleeves, fastening screws, and conical heads or end plates, used to connect steel pipe members in space structures such as grid frames and double-layer grid shells. The diameter of the selected high-strength bolts should be determined by the internal forces of the tension members. For compression members, the bolt diameter can be calculated based on the absolute value of the internal force design, then reduced by 1-3 grades according to the bolt diameter series. Based on the stress characteristics of bolted ball joint connections, the axial pressure of compression members is mainly transmitted through the bearing pressure of the sleeve end face, with the bolt primarily serving a connecting function; tension members mainly transmit tensile force through the bolts, making the bolts the primary load-bearing components. Therefore, the connection quality of the high-strength bolts has a significant impact on the load-bearing capacity of the grid frame members.

[0003] The "Code for Acceptance of Construction Quality of Steel Structures" (GB50205) stipulates that after the overall assembly of the bolted ball joint space frame is completed, the high-strength bolts and the ball joint should be tightly connected. The thread length of the high-strength bolt screwed into the bolt ball should not be less than 1.0d (d is the bolt diameter). There should be no gaps, looseness or other signs of not being tightened at the connection. However, in actual inspection, it was found that the bolted ball joint design requirements were not met, which also affected the installation quality of the space frame and led to increased structural deformation.

[0004] Existing patents, such as the "Welding Reinforcement Device for Bolted Ball Nodes in Space Grid Structures" (application number 201621262272.X), relate to the field of welding reinforcement technology for bolted ball nodes in space grid structures. This utility model includes a bolted ball node composed of a bolted ball, a high-strength bolt, a sleeve, and a steel pipe. When the sleeve at the node is not tightened or the node's load-bearing capacity is insufficient, an outer casing is symmetrically welded at the node. The outer casings are evenly arranged between the bolted ball and the steel pipe; one end of each outer casing is welded to the bolted ball, and the other end is welded to the steel pipe.

[0005] The above method is simple to operate, can be installed on-site, has a wide range of applications, saves materials, and is highly operable. However, the method of fixing by welding is complicated to operate and has great limitations. Utility Model Content

[0006] This utility model aims to solve the above-mentioned technical problems by providing a steel pipe grid node component.

[0007] To solve the above-mentioned technical problems, the technical solution provided by this utility model is as follows:

[0008] A steel pipe grid node component includes a bolt ball, a high-strength bolt, and a sleeve;

[0009] At least one set of steel pipes is symmetrically arranged on the outside of the bolt ball, and an outer casing component is installed on the outside of the two steel pipes.

[0010] The outer casing includes an upper bracket and a lower bracket, which wrap around the upper and lower sides of the bolt ball and the steel pipe.

[0011] Preferably, both the upper and lower supports include opposing limiting plates, and an arc-shaped plate for fitting bolt balls is installed between the two limiting plates.

[0012] Preferably, the surface of the bolt ball has a threaded hole, and the high-strength bolt passes through the steel pipe and the sleeve in sequence to connect with the threaded hole of the bolt ball.

[0013] Preferably, the lower end of the upper bracket is provided with a screw, a limit block is installed on one side of the high-strength bolt, and the screw passes through the steel pipe and is fixedly connected to the limit block by a nut.

[0014] Preferably, a pad that fits the steel pipe is fitted onto the outer side of the screw.

[0015] Preferably, the upper bracket and the lower bracket are fixedly connected by a bolt group.

[0016] With the above structure, this utility model has the following advantages:

[0017] This utility model increases the load-bearing capacity at the joint by connecting the upper bracket's screw through the steel pipe, the limiting block, and the lower bracket's limiting plate with a nut. It can be installed on-site without welding, has a wide range of applications, saves materials, and is highly operable.

[0018] The above overview is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features of the present invention will become readily apparent from the accompanying drawings and the following detailed description. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the structure of this utility model.

[0021] Figure 2 This is an exploded view of this utility model.

[0022] Figure 3 This is a structural schematic diagram of Embodiment 2 of this utility model.

[0023] As shown in the figure: 1. Bolt ball; 2. High-strength bolt; 3. Sleeve; 4. Steel pipe; 5. Outer component; 501. Upper bracket; 502. Lower bracket; 503. Screw; 504. Limiting plate; 505. Arc plate; 6. Threaded hole; 7. Nut; 8. Spacer; 9. Limiting block. Detailed Implementation

[0024] The embodiments of this application are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0025] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0026] The present invention will now be described in further detail in conjunction with the full text.

[0027] Combined with appendix Figure 1 and Figure 2 A steel pipe grid node component includes a bolt ball 1, a high-strength bolt 2, and a sleeve 3. The surface of the bolt ball 1 has a threaded hole 6. The high-strength bolt 2 passes through a steel pipe 4 and the sleeve 3 in sequence to connect with the threaded hole 6 of the bolt ball 1. The sleeve 3 is a hexagonal sleeve, designed to ensure that the high-strength bolt 2 at the head of the steel pipe can be tightly screwed into the threaded hole of the bolt ball 1.

[0028] In specific implementation of this utility model, such as Figure 1 and Figure 2As shown. At least one set of steel pipes 4 are symmetrically arranged on the outer side of the bolt ball 1, and an outer casing 5 is installed on the outer side of the two steel pipes 4; the outer casing 5 includes an upper bracket 501 and a lower bracket 502, which wrap around the upper and lower sides of the bolt ball 1 and the steel pipes 4. Both the upper support 501 and the lower support 502 include opposing limiting plates 504. An arc-shaped plate 505 that fits the bolt ball 1 is installed between the two limiting plates 504. The lower end of the limiting plate 504 of the upper support 501 is provided with a screw 503. A limiting block 9 is installed on one side of the high-strength bolt 2. Specifically, the screw 503 passes through the steel pipe 4, the limiting block 9 and the limiting plate 504 of the lower support 502 and is fixedly connected by a nut 7. This can limit the axial movement of the opposing steel pipe 4 by limiting the two high-strength bolts 2, and strengthen the connection between the steel pipe 4 and the bolt ball 1, increasing the load-bearing capacity at the node. It can be installed on-site without welding, has a wide range of applications, saves materials and is highly operable.

[0029] Through holes for use with screws 503 are provided on the limiting plate 504 of steel pipe 4 and lower support 502.

[0030] The outer side of the screw 503 is fitted with a pad 8 that fits the steel pipe 4. Specifically, the pad 8 serves to buffer and limit movement.

[0031] In a specific implementation of this utility model, the upper bracket 501 and the lower bracket 502 are fixedly connected by a bolt group. The upper bracket 501 and the lower bracket 502 are fixed by bolts, which can limit the two opposing steel pipes 4 and achieve an axial fixing effect.

[0032] Specifically, the side of the arc plate 505 closest to the steel pipe 4 and the sleeve 3 has a groove for fitting.

[0033] Example 1:

[0034] like Figure 1 As shown, the high-strength bolt 2 passes through the steel pipe 4, sleeve 3 and threaded hole 6 of bolt ball 1 in sequence. The screw 503 passes through the steel pipe 4, limit block 9 and limit plate 504 of lower bracket 502 and is fixedly connected by nut 7. Upper bracket 501 and lower bracket 502 are fixed by bolts, which strengthens the connection between steel pipe 4 and bolt ball 1, increases the load-bearing capacity at the node, can be installed on site without welding, has a wide range of applications, saves materials and is highly operable.

[0035] Example 2:

[0036] like Figure 3As shown, this embodiment adds multiple sets of steel pipes compared to Embodiment 1, increasing the number of limiting plates 504 and arc-shaped plates 505 in the upper support 501 and lower support 502. The arc-shaped plates 505 are integrated. High-strength bolts 2 pass through the steel pipe 4, sleeve 3, and threaded holes 6 of bolt balls 1 in sequence. Screws 503 pass through the steel pipe 4, limiting blocks 9, and limiting plates 504 of the lower support 502 and are fixedly connected by nuts 7. The upper support 501 and lower support 502 are fixed by bolts, which strengthens the connection between the steel pipe 4 and bolt balls 1, increases the load-bearing capacity at the nodes, allows for on-site installation without welding, has a wide range of applications, saves materials, and is highly operable.

[0037] The present invention and its embodiments have been described above. This description is not restrictive, and the embodiments shown throughout the text are only one of the embodiments of the present invention. The actual structure is not limited to this. In conclusion, if a person skilled in the art is inspired by this description and designs a similar structure and embodiment without departing from the inventive spirit of the present invention, such design should fall within the protection scope of the present invention.

Claims

1. A steel pipe space frame node component, characterized in that, Includes bolt ball (1), high-strength bolt (2), and sleeve (3); At least one set of steel pipes (4) are symmetrically arranged on the outside of the bolt ball (1), and an outer casing component (5) is installed on the outside of the two steel pipes (4). The outer component (5) includes an upper bracket (501) and a lower bracket (502), which wrap around the upper and lower sides of the bolt ball (1) and the steel pipe (4).

2. The steel pipe grid node component according to claim 1, characterized in that: The surface of the bolt ball (1) is provided with a threaded hole (6), and the high-strength bolt (2) passes through the steel pipe (4) and the sleeve (3) in sequence to connect with the threaded hole (6) of the bolt ball (1).

3. The steel pipe grid node component according to claim 1, characterized in that: The upper support (501) and lower support (502) both include limiting plates (504) that are respectively arranged on the outside of the steel pipe (4) and the sleeve (3), and an arc plate (505) that fits the bolt ball (1) is installed between multiple limiting plates (504) on the same side.

4. A steel pipe grid node component according to claim 3, characterized in that: The upper bracket (501) has a screw (503) at the lower end of the limiting plate (504). A limiting block (9) is installed on one side of the high-strength bolt (2). The screw (503) passes through the steel pipe (4), the limiting block (9) and the limiting plate (504) of the lower bracket (502) and is fixedly connected by a nut (7).

5. A steel pipe grid node component according to claim 4, characterized in that: The screw (503) is fitted with a pad (8) that fits the steel pipe (4) on its outer side.

6. A steel pipe grid node component according to claim 1, characterized in that: The upper bracket (501) and the lower bracket (502) are fixedly connected by a bolt group.

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