Net rack for solving prestress in welding

Abstract

The utility model discloses a welding prestressing net rack which comprises a base and a net rack structure, the net rack structure is arranged, four groups of lower chord balls, connecting rods and web members are used for welding and reinforcing upper chord balls, and four groups of clamping and fixing mechanisms are used for improving the stability of connection between the connecting rods and the upper chord balls; by arranging the clamping and fixing mechanism, the connecting rod is obliquely inserted along notches in the inner sides of the fixed seat, the movable groove, the adjusting seat and the knob block, and the clamping stability between the connecting rod and the upper chord ball is indirectly improved through threaded fastening fit between the adjusting seat and the knob block.

Description

Technical Field

[0001] The utility model relates to the technical field of building construction, and particularly relates to a welded prestressed grid. Background Art

[0002] A welded spherical grid is a grid structure with spherical node connections, and this structure is usually formed by welding steel materials. Its unique spherical node design makes the entire grid structure more stable and balanced, capable of withstanding large loads and having good seismic performance. Since many assembly supports need to be erected under the roof grid or trenches need to be dug on the ground under the gate truss before lifting the grid, and then the in-situ assembly of the roof grid and the gate truss is carried out, the construction cost is extremely high, and the construction difficulty and danger are relatively large.

[0003] For example, the patent with the publication number CN202120191587.4 discloses "A large-span welded spherical prestressed grid". When assembling the lower chord pipes of the gate truss in the large-span welded spherical prestressed grid, the protruding parts and recessed parts on the first lower chord pipe play a guiding role to facilitate the assembly of the first lower chord pipe. At the same time, the first lower chord pipe is not prone to shaking after assembly, avoiding poor welding effects caused by displacement between the two first lower chord pipes during subsequent welding.

[0004] The above-mentioned method uses steel materials for welding connection to make the entire grid achieve better stability and balance effects. However, when welding the welded ball and the connecting rod, it is necessary to increase the connection firmness between the two. The welding stability between the welded ball and the connecting rod is relatively poor, so it is not conducive to the support effect of the grid. Content of the Utility Model

[0005] (1) Technical Problems to be Solved

[0006] Aiming at the deficiencies of the prior art, the utility model provides a welded prestressed grid, which solves the problems mentioned above.

[0007] (2) Technical Solutions

[0008] To achieve the above purposes, the utility model is realized through the following technical solutions: A welded prestressed grid includes a base and a grid structure. The grid structure is installed at the upper end of the base. The grid structure includes lower chord balls, connecting rods, web members, clamping mechanisms, and upper chord balls. The right end of the lower chord ball is fixedly connected to the connecting rod. The clamping mechanism is installed on the lower front side of the upper chord ball. The lower chord ball is fixedly connected to the lower front side of the upper chord ball through the web member, and the front end of the web member is movably connected to the inner side of the front end of the clamping mechanism. The lower chord ball is installed at the upper end of the base.

[0009] Preferably, the clamping mechanism includes a fixed seat, a movable groove, an adjusting seat and a rotary knob. An internal movable groove is formed in the fixed seat, an adjusting seat is installed on the inner side of the movable groove, the rotary knob is rotatably matched with the inner side of the lower end of the movable groove, the fixed seat is installed on the lower front side of the upper chord ball, and the front end of the web member is movably connected to the middle inner sides of the fixed seat, the movable groove, the adjusting seat and the rotary knob.

[0010] Preferably, four sets of the lower chord balls, connecting rods, web members and clamping mechanisms are provided. The four sets of lower chord balls are fixedly connected at equal intervals through four sets of connecting rods, thereby improving the connection effect of the four sets of lower chord balls and connecting rods.

[0011] Preferably, the four sets of lower chord balls are fixedly connected to the four sides of the bottom of the upper chord ball through four sets of connecting rods, thereby improving the stability of the connection and support between the four sets of connecting rods and the upper chord ball.

[0012] Preferably, the clamping mechanisms are arranged at equal intervals along the four sides of the bottom of the upper chord ball, and the stability of the connection between the four sets of connecting rods and the upper chord ball is improved.

[0013] Preferably, threads are provided on the inner side of the lower end of the fixed seat and the upper end of the rotary knob, and the inner side of the lower end of the fixed seat and the upper end of the rotary knob are in threaded cooperation, thereby increasing the fastening between the fixed seat and the rotary knob.

[0014] Preferably, the upper end of the rotary knob is provided with an inclined surface, and the inclined surface is slidably matched with the outer side of the upper end of the adjusting seat, so as to adjust the rotary knob to fit and fasten the outer surface of the connecting rod.

[0015] (III) Beneficial effects

[0016] The utility model provides a welded prestressed grid structure. It has the following beneficial effects: By setting the grid structure, the upper chord ball is welded and reinforced through four sets of lower chord balls, connecting rods and web members, and the stability of the connection between the connecting rod and the upper chord ball is improved through four sets of clamping mechanisms.

[0017] The utility model provides a welded prestressed grid structure. It has the following beneficial effects: By setting the clamping mechanism, the connecting rod is obliquely inserted along the notch inside the fixed seat, the movable groove, the adjusting seat and the rotary knob, and the threaded fastening cooperation between the adjusting seat and the rotary knob is used to indirectly improve the clamping stability between the connecting rod and the upper chord ball. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a three-dimensional structural schematic diagram of the utility model;

[0019] Figure 2 is a three-dimensional structural schematic diagram of the grid structure of the utility model;

[0020] Figure 3 Schematic top view structure diagram of the grid structure of the present utility model;

[0021] Figure 4 Schematic three-dimensional partial enlarged structure diagram of the grid structure of the present utility model;

[0022] Figure 5 Schematic plan structure diagram of the clamping mechanism of the present utility model.

[0023] In the figure: base - 1, grid structure - 2, lower chord ball - 21, connecting rod - 22, web member - 23, clamping mechanism - 24, upper chord ball - 25, fixed seat - 241, movable groove - 242, adjusting seat - 243, rotary knob - 244. Specific implementation mode

[0024] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

[0025] Please refer to Figure 1 and 2 , the present utility model provides a technical solution for a welded prestressed grid: a welded prestressed grid, including a base 1 and a grid structure 2, and the grid structure 2 is installed on the upper end of the base 1.

[0026] Please refer to Figure 3 and 4 , the present utility model provides a technical solution for a welded prestressed grid: a welded prestressed grid, the grid structure 2 includes a lower chord ball 21, a connecting rod 22, a web member 23, a clamping mechanism 24 and an upper chord ball 25. The right end of the lower chord ball 21 is fixedly connected to the connecting rod 22. The clamping mechanism 24 is installed on the lower front side of the upper chord ball 25. The lower chord ball 21 is fixedly connected to the lower front side of the upper chord ball 25 through the web member 23, and the front end of the web member 23 is movably connected to the inner front side of the clamping mechanism 24. The lower chord ball 21 is installed on the upper end of the base 1. Four groups of the lower chord balls 21, connecting rods 22, web members 23 and clamping mechanisms 24 are respectively provided. The four groups of lower chord balls 21 are fixedly connected at equal intervals through the four groups of connecting rods 22, thereby improving the connection effect of the four groups of lower chord balls 21 and connecting rods 22. The four groups of lower chord balls 21 are fixedly connected to the four sides of the bottom of the upper chord ball 25 through the four groups of connecting rods 22, thereby improving the stability of the connection and support between the four groups of connecting rods 22 and the upper chord ball 25. The clamping mechanisms 24 are arranged at equal intervals along the four sides of the bottom of the upper chord ball 25, and improve the stability of the connection between the four groups of connecting rods 22 and the upper chord ball 25.

[0027] Please refer to Figure 5 , the present utility model provides a technical solution for welding a prestressed grid: a welded prestressed grid, the clamping mechanism 24 includes a fixed seat 241, a movable groove 242, an adjusting seat 243 and a rotary knob 244. An inner part of the fixed seat 241 is provided with the movable groove 242. An adjusting seat 243 is installed inside the movable groove 242. The rotary knob 244 is rotationally matched with the inner side of the lower end of the movable groove 242. The fixed seat 241 is installed on the lower front side of the upper chord ball 25. The front end of the web member 23 is movably connected to the middle inner sides of the fixed seat 241, the movable groove 242, the adjusting seat 243 and the rotary knob 244. Threads are provided on the inner side of the lower end of the fixed seat 241 and the upper end of the rotary knob 244, and the inner side of the lower end of the fixed seat 241 and the upper end of the rotary knob 244 are threadedly matched, thereby increasing the fastening property between the fixed seat 241 and the rotary knob 244. The upper end of the rotary knob 244 is provided with an inclined surface, and the inclined surface is slidably matched with the outer side of the upper end of the adjusting seat 243, so as to adjust to the effect that the outer surface of the connecting rod 22 is tightly fitted through the rotary knob 244.

[0028] When in use, by respectively inserting the four groups of connecting rods 22 obliquely into the gaps inside the fixed seat 241, the movable groove 242, the adjusting seat 243 and the rotary knob 244, and through the threaded fastening cooperation between the adjusting seat 243 and the rotary knob 244, the clamping stability between the connecting rod 22 and the upper chord ball 25 is indirectly improved; subsequently, a welding reinforcement effect is formed among the four groups of lower chord balls 21, the connecting rods 22 and the web members 23 on the upper chord ball 25.

[0029] The control mode of the present utility model is controlled by manually starting and closing a switch. The wiring diagram of the power element and the power supply are common knowledge in the art, and the present utility model is mainly used to protect mechanical devices, so the control mode and wiring arrangement of the present utility model will not be further explained in detail.

[0030] The control mode of the present utility model is automatically controlled by a controller. The control circuit of the controller can be realized by simple programming by those skilled in the art. The power supply is also common knowledge in the art, and the present utility model is mainly used to protect mechanical devices, so the control mode and circuit connection of the present utility model will not be further explained in detail.

[0031] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A welded prestressed grid structure, comprising a base (1); It is characterized in that: It further includes a grid structure (2), the grid structure (2) is installed at the upper end of the base (1), the grid structure (2) includes a lower chord ball (21), a connecting rod (22), a web member (23), a clamping mechanism (24) and an upper chord ball (25), the right end of the lower chord ball (21) is fixedly connected to the connecting rod (22), the clamping mechanism (24) is installed on the lower front side of the upper chord ball (25), the lower chord ball (21) is fixedly connected to the lower front side of the upper chord ball (25) through the web member (23), and the front end of the web member (23) is movably connected to the inner side of the front end of the clamping mechanism (24), and the lower chord ball (21) is installed at the upper end of the base (1).

2. A welded prestressed grid according to claim 1, characterized in that: The clamping mechanism (24) includes a fixed seat (241), a movable groove (242), an adjusting seat (243) and a rotary knob (244), a movable groove (242) is formed inside the fixed seat (241), the adjusting seat (243) is installed inside the movable groove (242), the rotary knob (244) is rotationally matched with the inner side of the lower end of the movable groove (242), the fixed seat (241) is installed on the lower front side of the upper chord ball (25), and the front end of the web member (23) is movably connected to the middle inner side of the fixed seat (241), the movable groove (242), the adjusting seat (243) and the rotary knob (244).

3. A prestressed grid for welding according to claim 1, characterized in that: Four groups of the lower chord balls (21), connecting rods (22), web members (23) and clamping mechanisms (24) are respectively provided, and the four groups of lower chord balls (21) are fixedly connected at equal intervals through the four groups of connecting rods (22).

4. A welded prestressed grid according to claim 1, characterized in that: The four groups of the lower chord balls (21) are fixedly connected to the four sides of the bottom of the upper chord ball (25) through the four groups of connecting rods (22).

5. A welded prestressed grid according to claim 1, characterized in that: The clamping mechanisms (24) are arranged at equal intervals along the four sides of the bottom of the upper chord ball (25).

6. A welded prestressed grid according to claim 2, characterized in that: Threads are provided on the inner side of the lower end of the fixed seat (241) and the upper end of the rotary knob (244), and the inner side of the lower end of the fixed seat (241) and the upper end of the rotary knob (244) are threadedly matched, so as to increase the tightness between the fixed seat (241) and the rotary knob (244).

7. A welded prestressed grid according to claim 2, characterized in that: The upper end of the rotary knob (244) is provided with an inclined surface, and the inclined surface is slidably matched with the outer side of the upper end of the adjusting seat (243).

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