Node connecting device of maintenance-free roof net rack system

Abstract

The utility model belongs to the field of net rack node connecting devices, and particularly relates to a node connecting device of a maintenance-free roof net rack system, which comprises a bolt ball body. A connecting piece is arranged on the surface of the bolt ball body, and a steel pipe is arranged at the end, away from the bolt ball body, of the connecting piece. A plurality of positioning grooves are evenly distributed in the surface of the bolt ball body, protruding blocks are connected to the inner walls of the positioning grooves, and threaded grooves are formed in the centers of the protruding blocks. The connecting piece comprises a sleeve, and one end, close to the bolt ball body, of the sleeve is connected with a first positioning block; through the structural design of the first sealing gasket and the second sealing gasket, the sealing function is enhanced, so that sealing and water prevention are facilitated after the high-strength bolt is installed, the problem that the waterproof effect is poor is solved, the situation that the high-strength bolt is corroded and damaged by a water source is avoided, the safety during use is effectively improved, and the service life of the high-strength bolt is prolonged. And maintenance can be reduced or eliminated.

Description

Technical Field

[0001] This utility model relates to the field of space frame node connection devices, specifically a node connection device for a maintenance-free roof space frame system. Background Technology

[0002] A space frame is a spatial structure composed of multiple members connected by nodes in a certain grid pattern. When connecting the members of a space frame, node connection devices are required. There are many types of existing node connection devices, including bolt balls, which are commonly used key connection components in spatial grid structures. They connect the members together with bolts to form a stable spatial structural system and are widely used in large-scale projects such as buildings, bridges, and stadiums.

[0003] In the prior art, such as in publication number CN222009175U, a connection structure for a space frame bolt ball joint is disclosed. It includes a steel pipe and a ball joint. The end of the steel pipe is provided with a cone head, and a connecting bolt is provided inside the cone head. The threaded end of the connecting bolt extends out of the cone head, and a connecting nut is sleeved on the outer ring of the portion of the connecting bolt extending out of the cone head. The thread of the connecting bolt is connected to the thread of the ball joint.

[0004] Although the aforementioned patent features an integrated design of the connecting rod's tube body and cone head compared to existing connection structures, which facilitates installation while ensuring connection strength and increases the contact area with connecting bolts and nuts, making the connection structure more stable and reliable, the patent's sealing effect is poor. This makes the high-strength bolts susceptible to corrosion and damage after contact with water, thus increasing maintenance costs. Therefore, a maintenance-free roof truss system node connection device is proposed to address the above issues. Utility Model Content

[0005] To address the shortcomings of existing technologies, such as poor sealing performance leading to easy corrosion and damage of high-strength bolts upon contact with water, thus increasing maintenance costs, this invention proposes a node connection device for a maintenance-free roof truss system.

[0006] The technical solution adopted by this utility model to solve its technical problem is: a node connection device for a maintenance-free roof grid system, comprising a bolt ball body; a connector is provided on the surface of the bolt ball body, and a steel pipe is provided at the end of the connector away from the bolt ball body;

[0007] The surface of the bolt ball body is evenly distributed with several positioning grooves, and the inner wall of the several positioning grooves is connected with a protrusion, and the center of the protrusion is provided with a threaded groove.

[0008] The connector includes a sleeve, a first positioning block is connected to one end of the sleeve near the bolt ball body, a first sealing gasket is connected to the surface of the first positioning block, and a second positioning block is connected to one end of the sleeve near the steel pipe, a second sealing gasket is connected to the surface of the second positioning block.

[0009] The steel pipe includes a fitting, and a receiving groove is provided at one end of the fitting near the connector. A high-strength bolt connected to the threaded groove is attached to the inner wall of the receiving groove.

[0010] Preferably, the first sealing gasket mates with the positioning groove, and both the second sealing gasket and the first sealing gasket are distributed in a regular hexagonal structure.

[0011] Preferably, the outer surface of the second sealing gasket is in close contact with the inner surface of the receiving groove.

[0012] Preferably, the surface of the second positioning block is connected with protruding rods, and there are two protruding rods symmetrically distributed.

[0013] Preferably, the surface of the pipe fitting is provided with a limiting groove that is connected to two protruding rods. The two limiting grooves are distributed in a "U" shape, and one end of the limiting groove is open while the other end is closed.

[0014] Preferably, the inner wall of the receiving groove is also connected to a return spring located outside the high-strength bolt. The return spring extends into the interior of the second positioning block and is connected to a movable push block. The movable push block abuts against the inner wall of the second positioning block.

[0015] The advantages of this utility model are:

[0016] 1. This utility model achieves enhanced sealing through the structural design of the first and second sealing gaskets, which is beneficial for sealing and waterproofing high-strength bolts after installation, solves the problem of poor waterproofing effect, avoids water source corrosion damage to high-strength bolts, effectively improves safety during use, and thus helps to reduce or eliminate maintenance work.

[0017] 2. This utility model, through the structural design of the protruding rod and the limiting groove, realizes the function of quick installation of the sleeve, solves the problem of cumbersome installation, saves installation time, improves installation efficiency, and after installation, it can achieve axial locking, effectively preventing the problem of loose threaded connection caused by shaking. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model 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 utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the exploded structure of this utility model;

[0021] Figure 3 This is a schematic diagram of the connection structure between the protruding rod and the limiting groove of this utility model;

[0022] Figure 4 This is a three-dimensional cross-sectional structural diagram of the present invention.

[0023] In the diagram: 1. Bolt ball body; 101. Positioning groove; 102. Protrusion; 103. Threaded groove; 2. Connector; 201. Sleeve; 202. First positioning block; 203. First sealing gasket; 204. Second positioning block; 205. Second sealing gasket; 205. Protruding rod; 3. Steel pipe; 301. Pipe fitting; 302. Receiving groove; 303. High-strength bolt; 304. Return spring; 305. Movable push block; 306. Limiting groove. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0025] Please see Figures 1-4 As shown, a node connection device for a maintenance-free roof truss system includes a bolt ball body 1; a connector 2 is provided on the surface of the bolt ball body 1, and a steel pipe 3 is provided at the end of the connector 2 away from the bolt ball body 1;

[0026] The surface of the bolt ball body 1 is evenly distributed with several positioning grooves 101, and the inner wall of the several positioning grooves 101 is connected with a protrusion 102. The center of the protrusion 102 is provided with a threaded groove 103.

[0027] The connector 2 includes a sleeve 201, a first positioning block 202 is connected to one end of the sleeve 201 near the bolt ball body 1, a first sealing gasket 203 is connected to the surface of the first positioning block 202, a second positioning block 204 is connected to one end of the sleeve 201 near the steel pipe 3, and a second sealing gasket 205 is connected to the surface of the second positioning block 204.

[0028] The steel pipe 3 includes a pipe fitting 301. The pipe fitting 301 has a receiving groove 302 at one end near the connector 2. The inner wall of the receiving groove 302 is connected to a high-strength bolt 303 that is connected to the threaded groove 103.

[0029] Furthermore, the first sealing gasket 203 cooperates with the positioning groove 101, and both the second sealing gasket 205 and the first sealing gasket 203 are distributed in a regular hexagonal structure, with the outer surface of the second sealing gasket 205 closely fitting the inner surface of the receiving groove 302.

[0030] During operation, the connection between the first sealing gasket 203 and the positioning groove 101, and the connection between the second sealing gasket 205 and the receiving groove 302, can strengthen the sealing of both ends of the connector 2. Thus, the connector 2 can waterproof the high-strength bolt 303 after installation, preventing damage caused by water erosion.

[0031] Furthermore, the surface of the second positioning block 204 is connected with protruding rods 206. There are two protruding rods 206 symmetrically distributed. The surface of the pipe fitting 301 is provided with limiting grooves 306 that are connected to the two protruding rods 206. The two limiting grooves 306 are distributed in a "U" shape, and one end of the limiting groove 306 is open, while the other end is closed.

[0032] During operation, the protruding rod 206 can be inserted into the limiting groove 306, and the protruding rod 206 can be rotated to limit the second positioning block 204, thereby facilitating the connection between the connector 2 and the steel pipe 3.

[0033] Furthermore, the inner wall of the receiving groove 302 is also connected to a return spring 304 located outside the high-strength bolt 303. The return spring 304 extends into the interior of the second positioning block 204 and is connected to a movable push block 305. The movable push block 305 abuts against the inner wall of the second positioning block 204.

[0034] During operation, the elasticity of the return spring 304 can cause the movable push block 305 to apply resistance to the second positioning block 204, preventing the second positioning block 204 from sliding along the closed end of the limiting groove 306, thereby improving the stability of the installation.

[0035] Working principle: First, the second positioning block 204 drives the protruding rod 206 to be inserted into the limiting groove 306 through the open end of the limiting groove 306. Then, the second positioning block 204 drives the protruding rod 206 to slide into the deepest part of the limiting groove 306. Then, the second positioning block 204 is rotated so that the second positioning block 204 drives the protruding rod 206 to approach the closed end of the limiting groove 306. Then, the reset spring 304 drives the movable push block 305 to slide, thus completing the installation of the second positioning block 204. This allows the second positioning block 204 to drive the second sealing gasket 205 to strengthen the seal of the receiving groove 302. Then, the steel pipe 3... The high-strength bolt 303 is connected to the threaded groove 103, causing the sleeve 201 to slide the first positioning block 202 into the positioning groove 101. After the first positioning block 202 drives the first sealing gasket 203 to connect with the positioning groove 101, the connection between the bolt ball body 1 and the connector 2 is reinforced and sealed, thereby completing a series of installation work and improving the waterproof effect after installation. At the same time, after installation, the hexagonal structure of the positioning groove 101 and the first positioning block 202 prevents the pipe 301 from rotating the high-strength bolt 303, thereby improving the stability after installation through the axial limiting function.

[0036] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, or similar improvements made within the theoretical and principle content of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A node connection device for a maintenance-free roof space frame system, characterized in that: It includes a bolt ball body (1); the surface of the bolt ball body (1) is provided with a connector (2), and a steel pipe (3) is provided at the end of the connector (2) away from the bolt ball body (1); The surface of the bolt ball body (1) is evenly distributed with a number of positioning grooves (101), and the inner walls of the number of positioning grooves (101) are connected with protrusions (102), and the center of the protrusions (102) is provided with a threaded groove (103). The connector (2) includes a sleeve (201), a first positioning block (202) is connected to one end of the sleeve (201) near the bolt ball body (1), a first sealing gasket (203) is connected to the surface of the first positioning block (202), a second positioning block (204) is connected to one end of the sleeve (201) near the steel pipe (3), and a second sealing gasket (205) is connected to the surface of the second positioning block (204). The steel pipe (3) includes a fitting (301), and the fitting (301) has a receiving groove (302) at one end near the connector (2). The inner wall of the receiving groove (302) is connected to a high-strength bolt (303) that is connected to the threaded groove (103).

2. The node connection device for a maintenance-free roof space frame system according to claim 1, characterized in that: The first sealing gasket (203) cooperates with the positioning groove (101), and both the second sealing gasket (205) and the first sealing gasket (203) are distributed in a regular hexagonal structure.

3. The node connection device for a maintenance-free roof space frame system according to claim 1, characterized in that: The outer surface of the second sealing gasket (205) is in close contact with the inner surface of the receiving groove (302).

4. The node connection device for a maintenance-free roof space frame system according to claim 1, characterized in that: The surface of the second positioning block (204) is connected with protruding rods (206), and there are two protruding rods (206) symmetrically distributed.

5. The node connection device for a maintenance-free roof space frame system according to claim 4, characterized in that: The surface of the pipe fitting (301) is provided with a limiting groove (306) that is connected to two protruding rods (206). The two limiting grooves (306) are distributed in a "U" shape, and one end of the limiting groove (306) is open, while the other end is closed.

6. The node connection device for a maintenance-free roof space frame system according to claim 5, characterized in that: The inner wall of the receiving groove (302) is also connected to a return spring (304) located outside the high-strength bolt (303). The return spring (304) extends into the interior of the second positioning block (204) and is connected to a movable push block (305). The movable push block (305) abuts against the inner wall of the second positioning block (204).

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