Hollow ball connecting joint for large steel structure

Abstract

The utility model provides a hollow ball connecting node for a large steel structure, which comprises the following steps: after a horizontal frame, a vertical frame and an inclined frame are spliced, grouting a grouting nail of a node connecting device; the jacking mechanism and the opening and closing mechanism are driven until the horizontal frame reaches the horizontal position, the horizontal frame is connected with the node connecting device through side walking wheels and second walking wheels, grouting nails of the node connecting device are grouted, the node connecting device is adjusted to keep two sets of connecting rod pieces vertical, and the two sets of connecting rod pieces are installed through two installation devices. And the plurality of inclined frames are mutually connected and mounted. According to the method, use of a large-scale tower crane is avoided, the cost is saved, and meanwhile the phenomenon of safety accidents is avoided; and a large tower crane is not used, so that the phenomena that the operation space of the large tower crane is possibly interfered by the structure and the operation efficiency is low are avoided. And the effect of connection enhancement of multiple steel structures is achieved through grouting, welding work is reduced, and application and popularization are facilitated.

Description

Technical Field

[0001] The utility model relates to the field of large-scale building construction, in particular to a hollow ball connection node for large-scale steel structures. Background Art

[0002] Modern architectural design focuses on beauty and advancement. The cantilevered grid structure can give the building a unique appearance and a sense of modernity. The cantilevered grid structure is a type of large steel structure.

[0003] The connection units in large frame structures are mostly composed of steel pipes and hollow ball welding units. The important welds are all of grade one. The welding process requirements are relatively high. The welding process of on-site workers must be strictly reviewed. The procedures are cumbersome, and the quality requirements for welding workers and welding materials are high, which increases the construction cost. Due to the welding operation and the working conditions of high-altitude operations, welders weld in the air for a long time, which poses great safety hazards and high construction costs. At the same time, the diagonal braces between existing large frame structures need to be reinstalled with clamps or other diagonal bracing devices, which is cumbersome and inconvenient to the construction. For this reason, we propose a hollow ball connection node for large steel structures to solve the above problems. Utility Model Content

[0004] The utility model provides a hollow ball connection node for large steel structures, which solves the problem that the connection units in large frame structures need to be welded to the hollow balls and steel pipes, which is cumbersome and has high requirements on the quality of welding workers and welding materials, increases the construction cost, and has great safety hazards. At the same time, diagonal braces cannot be installed on the connection units, and other diagonal bracing devices need to be added.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is: a hollow ball connection node for a large steel structure, comprising a connecting ball, a plurality of rotating rods are arranged on the connecting ball, the connecting ball comprises a plurality of fixing rods, a connected grouting nail is arranged on the connecting ball, and a backflow prevention device is arranged on the grouting nail;

[0006] The steel tube is inserted into the fixed rod or the rotating rod.

[0007] In a preferred embodiment, the connecting ball member comprises a hollow ball, a plurality of fixing rods are connected to the hollow ball, a plurality of arc-shaped through grooves penetrating the hollow ball are provided on the hollow ball, and an inner arc-shaped groove is provided on the arc-shaped through groove.

[0008] In a preferred embodiment, a top plate is provided at one end of the fixing rod, a first thread is provided at the other end of the fixing rod, a cavity is provided on one side of the top plate, and slurry holes are provided on both sides of the top plate.

[0009] In the preferred embodiment, two ends of the slurry hole are connected to the hollow ball and the cavity respectively.

[0010] In a preferred embodiment, the rotating rod comprises a supporting rod, one end of which is provided with an arc-shaped plate, the arc-shaped plate slides against the inner arc-shaped groove, and the other end of the supporting rod is provided with a second thread.

[0011] In a preferred embodiment, a plurality of threaded covers are provided on the connecting ball, and the threaded covers are threadably connected to the first thread or the second thread.

[0012] In a preferred embodiment, a cylinder is provided between the rotating rod and the connecting ball member.

[0013] In the preferred embodiment, the grouting nail comprises a shell, a grouting channel is provided on the shell, a flat bottom hole is provided at one end of the shell, and the backflow prevention device is installed on the flat bottom hole;

[0014] The grouting nails are connected to the grouting machine through pipes.

[0015] In a preferred embodiment, the backflow prevention device includes a sleeve, a sliding column is provided on the sleeve, a spring is provided between the column and the sleeve, and one end of the column is a pointed cone surface.

[0016] The utility model provides a hollow ball connection node for a large steel structure. The large steel structure includes a plurality of hollow ball connection nodes and a plurality of steel pipes. Two hollow ball connection nodes are connected by steel pipes. The angles of the plurality of rotating rods on the hollow ball connection nodes are adjustable so that the angle of the steel pipe relative to the connecting ball piece is adjustable. When the two ends of the steel pipe are respectively inserted into the rotating rods of two different connecting ball pieces, the steel pipe is equivalent to the diagonal brace of the overall steel structure, avoiding the installation of other diagonal brace devices. When the two ends of the steel pipe are inserted into the fixing rods of two adjacent connecting ball pieces, these steel pipes form a rectangular frame of the overall structure. When the cylinder is driven to adjust the angle of the rotating rod, and when the cylinder stops moving, the angle of the rotating rod is fixed.

[0017] When the overall structure is installed, the grouting box is driven to make the grouting liquid flow into the connecting ball to fix the overall structure. Grouting can achieve the effect of strengthening the connection of large steel structures, and greatly reduce welding work, avoid the phenomenon of high quality of welding workers and welding materials, and high construction costs. It can avoid the phenomenon of welding workers welding at high altitudes for a long time, causing safety accidents. At the same time, reducing the long welding time can greatly reduce costs and shorten construction time.

[0018] The anti-backflow device can prevent the grouting liquid from flowing back. When the grouting liquid is injected, the column is subjected to the impact pressure of the liquid inlet, and the pressure is transmitted to the pointed cone surface of the column, and the column slides downward. When the grouting stops, the column is pushed back by the thrust of the spring, and the pressure on the other end of the pointed cone surface makes it difficult to push the column to slide, thus realizing the anti-backflow effect of the grouting liquid, and is suitable for popularization and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0020] Figure 1 It is an axial side view of the node connection device of the utility model;

[0021] Figure 2 It is an exploded view of the node connection device of the utility model;

[0022] Figure 3 A top view of the node connection device of the utility model;

[0023] Figure 4 It is a cross-sectional view of the connecting ball member of the utility model;

[0024] Figure 5 It is a cross-sectional view of the grouting nail of the utility model;

[0025] Figure 6 It is a side view of the backflow prevention device of the utility model;

[0026] In the figure: connecting ball 1; hollow ball 101; fixing rod 102; arc-shaped through groove 103; inner arc-shaped groove 104; grouting hole 105; cavity 106; top plate 107; first thread 108; rotating rod 2; arc-shaped plate 201; support rod 202; second thread 203; grouting nail 3; outer shell 301; grouting channel 302; flat bottom hole 303; cylinder 4; threaded cover 5; backflow prevention device 6; sleeve 601; column 602; pointed cone surface 603; spring 604. DETAILED DESCRIPTION

[0027] Embodiment 1:

[0028] like Figures 1 to 6 In the invention, a hollow ball connection node for a large steel structure includes a connection ball 1, a plurality of rotating rods 2 are provided on the connection ball 1, the connection ball 1 includes a plurality of fixed rods 102, a connected grouting nail 3 is provided on the connection ball 1, and a backflow prevention device 6 is provided on the grouting nail 3;

[0029] The steel pipe is inserted into the fixed rod 102 or the rotating rod 2. With this structure, the large steel structure includes multiple hollow ball connection nodes and multiple steel pipes. Two hollow ball connection nodes are connected by steel pipes. The angles of multiple rotating rods 2 on the hollow ball connection nodes are adjustable, so that the angle of the steel pipe relative to the connecting ball 1 is adjustable. When the two ends of the steel pipe are respectively inserted into the rotating rods 2 of two different connecting ball parts 1, the steel pipe is equivalent to the diagonal brace of the overall steel structure, avoiding the installation of other diagonal brace devices. When the two ends of the steel pipe are inserted into the fixed rods 102 of two adjacent connecting ball parts 1, these steel pipes form a rectangular frame of the overall structure. When the cylinder 4 is driven to adjust the angle of the rotating rod 2, and the movement of the cylinder 4 is stopped, the angle of the rotating rod 2 is fixed.

[0030] When the overall structure is installed, the grouting box is driven to allow the grouting liquid to flow into the connecting ball 1 to fix the overall structure. Grouting achieves the effect of strengthening the connection of large steel structures, while greatly reducing welding work, avoiding the high quality of welding workers and welding materials, and high construction costs. It avoids the phenomenon of welding workers welding at high altitudes for a long time, causing safety accidents. At the same time, reducing the long welding time can greatly reduce costs and shorten construction time.

[0031] The anti-backflow device 6 can prevent the grouting liquid from flowing back. When the grouting liquid is injected, the column 602 is subjected to the impact pressure of the liquid inlet, and the pressure is transmitted to the pointed cone surface 603 of the column 602, and the column 602 slides downward. When the grouting stops, the column 602 is pushed back by the thrust of the spring 604, and the pressure on the other end face of the pointed cone surface 603 makes it difficult to push the column 602 to slide, thereby realizing the anti-backflow effect of the grouting liquid.

[0032] In the preferred embodiment, the connecting ball 1 includes a hollow ball 101, a plurality of fixing rods 102 connected to the hollow ball 101, a plurality of arc-shaped through grooves 103 penetrating the hollow ball 101 are provided on the hollow ball 101, and an inner arc-shaped groove 104 is provided on the arc-shaped through groove 103. With this structure, the shaped plate 201 slides against the inner arc-shaped groove 104.

[0033] In the preferred embodiment, a top plate 107 is provided at one end of the fixing rod 102, a first thread 108 is provided at the other end of the fixing rod 102, a cavity 106 is provided on one side of the top plate 107, and slurry holes 105 are provided on both sides of the top plate 107. With this structure, one end of the steel pipe abuts against the top plate 107.

[0034] In the preferred embodiment, both ends of the grout hole 105 are respectively connected to the hollow ball 101 and the cavity 106. With this structure, the grouting liquid flows into the cavity 106 through the grout hole 105.

[0035] In the preferred embodiment, the rotating rod 2 includes a support rod 202, one end of which is provided with an arc plate 201, the arc plate 201 slides against the inner arc groove 104, and the other end of the support rod 202 is provided with a second thread 203. With this structure, the angles of the multiple rotating rods 2 on the hollow ball connection node are adjustable, so that the angle of the steel pipe relative to the connecting ball component 1 is adjustable. When the two ends of the steel pipe are respectively inserted into the rotating rods 2 of two different connecting ball components 1, the steel pipe is equivalent to the diagonal brace of the overall steel structure, avoiding the installation of other diagonal brace devices. When the two ends of the steel pipe are inserted into the fixing rods 102 of two adjacent connecting ball components 1, these steel pipes form a rectangular frame of the overall structure.

[0036] In the preferred embodiment, a plurality of threaded covers 5 are provided on the connecting ball 1, and the threaded covers 5 are threadedly connected with the first thread 108 or the second thread 203. With this structure, after installation, some fixing rods 102 or support rods 202 on the connecting ball 1 are not installed with steel pipes. In this case, the threaded covers 5 are connected to the fixing rods 102 or support rods 202 that are not installed with steel pipes, so as to prevent the grouting liquid in the whole device from overflowing from the fixing rods 102 or support rods 202.

[0037] In the preferred embodiment, a cylinder 4 is provided between the rotating rod 2 and the connecting ball 1. With this structure, when the cylinder 4 is driven to adjust the angle of the rotating rod 2, the angle of the rotating rod 2 is fixed when the cylinder 4 stops moving.

[0038] In the preferred embodiment, the grouting nail 3 includes a shell 301, a grouting channel 302 is provided on the shell 301, a flat bottom hole 303 is provided at one end of the shell 301, and the backflow prevention device 6 is installed on the flat bottom hole 303;

[0039] The grouting nail 3 is connected to the grouting machine through a pipeline.

[0040] In the preferred embodiment, the anti-backflow device 6 includes a sleeve 601, a sliding column 602 is provided on the sleeve 601, a spring 604 is provided between the column 602 and the sleeve 601, and one end of the column 602 is a pointed cone surface 603. With this structure, the anti-backflow device 6 can prevent the grouting liquid from flowing back. When the grouting liquid is injected, the column 602 is subjected to the impact pressure of the liquid inlet, and the pressure is transmitted to the pointed cone surface 603 of the column 602, and the column 602 slides downward. When the grouting stops, the column 602 is pushed back by the thrust of the spring 604, and the pressure on the other end surface of the pointed cone surface 603 is difficult to push the column 602 to slide, thereby realizing the anti-backflow effect of the grouting liquid.

[0041] The above embodiments are only preferred technical solutions of the present invention and should not be regarded as limitations of the present invention. The embodiments and features in the embodiments of the present application can be arbitrarily combined with each other without conflict. The protection scope of the present invention shall be the technical solutions recorded in the claims, including equivalent replacement solutions of the technical features in the technical solutions recorded in the claims. That is, equivalent replacement improvements within this scope are also within the protection scope of the present invention.

Claims

1. Hollow ball connection node for large steel structure, its characteristics are: The connecting ball piece (1) comprises a connecting ball piece (1), a plurality of rotating rods (2) are provided on the connecting ball piece (1), the connecting ball piece (1) comprises a plurality of fixing rods (102), a connected grouting nail (3) is provided on the connecting ball piece (1), and a backflow prevention device (6) is provided on the grouting nail (3); The steel pipe is inserted into the fixed rod (102) or the rotating rod (2).

2. The hollow ball connection node for large steel structures according to claim 1 is characterized in that: The connecting ball component (1) comprises a hollow ball (101), a plurality of fixing rods (102) connected to the hollow ball (101), a plurality of arc-shaped through grooves (103) penetrating the hollow ball (101) are provided on the hollow ball (101), and an inner arc-shaped groove (104) is provided on the arc-shaped through groove (103).

3. The hollow ball connection node for large steel structures according to claim 2 is characterized in that: A top plate (107) is provided at one end of the fixing rod (102), a first thread (108) is provided at the other end of the fixing rod (102), a cavity (106) is provided at one side of the top plate (107), and slurry holes (105) are provided at both sides of the top plate (107).

4. The hollow ball connection node for large steel structures according to claim 3 is characterized in that: The two ends of the slurry hole (105) are respectively connected to the hollow ball (101) and the cavity (106).

5. The hollow ball connection node for large steel structures according to claim 1 is characterized in that: The rotating rod (2) comprises a supporting rod (202), one end of the supporting rod (202) is provided with an arc-shaped plate (201), the arc-shaped plate (201) slides against the inner arc-shaped groove (104), and the other end of the supporting rod (202) is provided with a second thread (203).

6. The hollow ball connection node for large steel structures according to claim 1 is characterized by: A plurality of threaded covers (5) are provided on the connecting ball (1), and the threaded covers (5) are threadedly connected to the first thread (108) or the second thread (203).

7. The hollow ball connection node for large steel structures according to claim 1 is characterized in that: A cylinder (4) is provided between the rotating rod (2) and the connecting ball component (1).

8. The hollow ball connection node for large steel structures according to claim 1 is characterized by: The grouting nail (3) comprises a shell (301), a grouting channel (302) is provided on the shell (301), a flat bottom hole (303) is provided at one end of the shell (301), and a backflow prevention device (6) is installed on the flat bottom hole (303); The grouting nail (3) is connected to the grouting machine through a pipeline.

9. The hollow ball connection node for large steel structures according to claim 1 is characterized by: The backflow prevention device (6) comprises a sleeve (601), a sliding column (602) is provided on the sleeve (601), a spring (604) is provided between the column (602) and the sleeve (601), and one end of the column (602) is a pointed cone surface (603).

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