Three-way crossed net rack for large span

Abstract

The utility model belongs to the technical field of three-way crossed net racks, and discloses a three-way crossed net rack for a large span, which comprises a first-stage plane truss, a second-stage plane truss and a third-stage plane truss which are crossed with one another and are positioned in three different directions, connecting balls are arranged at the intersections of the first-stage plane truss, the second-stage plane truss and the third-stage plane truss, vertical rods are connected between the connecting balls which correspond to each other up and down, and the first-stage plane truss, the second-stage plane truss, the third-stage plane truss and the vertical rods are all composed of rod piece units of different numbers. The two ends of each rod piece unit are connected with the connecting balls through the bolt assemblies, the bolt assemblies are sealed, erosion of water vapor and other substances is reduced, follow-up disassembly is facilitated, the situation that the stress strength is reduced due to the fact that the bolt assembly structures are eroded is prevented, and the protective sleeves can be pushed; and inspection is not affected in the regular maintenance process of the bolt assembly, and use of the three-way cross net rack is better facilitated.

Description

Technical Field

[0001] The utility model belongs to the technical field of three-way cross grids, in particular to a three-way cross grid for a large span. Background Art

[0002] The three-way cross grid is formed by the intersection of plane trusses in three directions, and the angle of intersection is 60 degrees. There is a vertical rod shared by the plane trusses in three directions at the nodes of the grid. The grid of this type of grid is generally in the shape of an equilateral triangle.

[0003] There are two common connection methods for the node positions of the three-way cross grid, one is welding and the other is bolt connection. The rods are connected together by high-strength bolts. This method is relatively convenient to install and disassemble, and is also convenient for later maintenance and replacement.

[0004] However, in actual use, the bolt connection method has the following problems: the structure at the bolt connection position is corroded by water vapor and other substances, which makes it inconvenient to disassemble, and in severe cases, cracks may appear at the connection position.

[0005] Therefore, in order to solve the above problems, a three-way cross grid for large span is proposed. Summary of the invention

[0006] In order to solve the problems raised in the above background technology, the utility model provides a three-way cross grid for large spans, which has the advantage of protecting the bolt connection position structure to facilitate disassembly.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a three-way cross grid for a large span, comprising a primary plane truss, a secondary plane truss, and a tertiary plane truss that cross each other in three different directions, wherein the primary plane truss, the secondary plane truss, and the tertiary plane truss are provided with connecting balls at the intersections of each other, and vertical rods are connected between the upper and lower corresponding connecting balls, and the primary plane truss, the secondary plane truss, the tertiary plane truss, and the vertical rods are all composed of different numbers of rod units, and both ends of the rod units are connected to the connecting balls by bolt assemblies, and a protective assembly is provided on the outer side of the bolt assembly;

[0008] The protection assembly includes a fixing ring, which is sleeved on the rod unit. A plurality of evenly distributed spring telescopic rods are connected to one side of the fixing ring. The ends of the spring telescopic rods are connected to protective sleeves, which are sleeved on the rod unit and are located on the outside of the bolt assembly. A side of the protective sleeve away from the spring telescopic rods is in close contact with the connecting ball.

[0009] Preferably, the angle between two intersecting rod units is 60 degrees.

[0010] Preferably, the grids formed by the intersection of the primary plane trusses, the secondary plane trusses, the tertiary plane trusses and the vertical rods are all equilateral triangles.

[0011] Preferably, the bolt assembly includes a cone head, the cone head is connected to a high-strength bolt, a thread groove is provided on the connecting ball at a position corresponding to the high-strength bolt, the thread groove is threadedly connected to the high-strength bolt, a hexagonal sleeve is sleeved on the high-strength bolt, the hexagonal sleeve is located between the cone head and the connecting ball, a fastening pin is provided on the hexagonal sleeve, and the fastening pin is connected to the high-strength bolt.

[0012] Preferably, the head of the high-strength bolt is located in the cone head, and the rod of the high-strength bolt passes through the cone head.

[0013] Preferably, the fixing ring is fixedly connected with a fixing sleeve, and the fixing sleeve is connected to the rod unit via fixing bolts.

[0014] Preferably, the spring telescopic rod comprises a cylinder, a movable block is arranged in the cylinder, two sides of the movable block are respectively connected to the spring and the movable rod, and one end of the movable rod away from the movable block passes through the cylinder.

[0015] Preferably, a protective washer is provided at one end of the protective sleeve close to the connecting ball, and the protective washer is in close contact with the outer surface of the connecting ball.

[0016] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0017] 1. The utility model provides a protective component to seal the bolt assembly position, reduce the erosion of water vapor and other substances, facilitate subsequent disassembly, and prevent the bolt assembly structure from being corroded and causing a reduction in force strength;

[0018] 2. The utility model provides structures such as a fixing ring and an elastic telescopic rod, so that the protective sleeve can be pushed, which will not affect the inspection during the regular maintenance of the bolt assembly and is more conducive to the use of the three-way cross grid. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0020] Figure 2 It is a schematic diagram of the primary plane truss, secondary plane truss, tertiary plane truss and vertical rod structure of the utility model;

[0021] Figure 3 This is a schematic diagram of the structure of the connection ball position of the utility model;

[0022] Figure 4 It is a structural schematic diagram of the bolt assembly of the utility model;

[0023] Figure 5 It is a structural schematic diagram of the spring telescopic rod of the utility model.

[0024] In the figure: 1. First-level plane truss; 2. Second-level plane truss; 3. Third-level plane truss; 4. Connecting ball; 5. Vertical rod; 6. Rod element;

[0025] 7. Bolt assembly; 71. Cone head; 72. High-strength bolt; 73. Thread groove; 74. Hexagonal sleeve; 75. Fastening pin;

[0026] 8. Protective assembly; 81. Fixed ring; 82. Spring telescopic rod; 821. Cylinder; 822. Movable block; 823. Spring; 824. Movable rod; 83. Protective sleeve;

[0027] 9. Fixing sleeve; 10. Fixing bolt; 11. Protective washer. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] like Figures 1 to 5 As shown, the utility model provides a three-way cross grid for a large span, comprising a primary plane truss 1, a secondary plane truss 2, and a tertiary plane truss 3 that cross each other in three different directions, a connecting ball 4 is provided at the intersection of the primary plane truss 1, the secondary plane truss 2, and the tertiary plane truss 3, a vertical rod 5 is connected between the upper and lower corresponding connecting balls 4, the primary plane truss 1, the secondary plane truss 2, the tertiary plane truss 3 and the vertical rod 5 are all composed of different numbers of rod units 6, both ends of the rod unit 6 are connected to the connecting ball 4 by a bolt assembly 7, and a protective assembly 8 is provided on the outer side of the bolt assembly 7;

[0030] The protection assembly 8 includes a fixing ring 81, which is sleeved on the rod unit 6. A plurality of evenly distributed spring telescopic rods 82 are connected to one side of the fixing ring 81. The ends of the spring telescopic rods 82 are connected to a protective sleeve 83. The protective sleeve 83 seals the position of the bolt assembly 7 to reduce the erosion of water vapor and other substances to facilitate subsequent disassembly and prevent the bolt assembly 7 structure from being corroded and causing the force strength to be reduced. The protective sleeve 83 is sleeved on the rod unit 6, and the protective sleeve 83 is on the outside of the bolt assembly 7. The side of the protective sleeve 83 away from the spring telescopic rod 82 is close to the connecting ball 4. The structures such as the fixing ring 81 and the elastic telescopic rod 82 enable the protective sleeve 83 to be pushed, which will not affect the inspection during the regular maintenance of the bolt assembly 7, and is more conducive to the use of the three-way cross grid.

[0031] Specifically, the angle between two intersecting rod units 6 is 60 degrees.

[0032] Furthermore, the grids formed by the intersections between the primary plane trusses 1 , the secondary plane trusses 2 , the tertiary plane trusses 3 and the vertical rods 5 are all equilateral triangles.

[0033] Furthermore, the bolt assembly 7 includes a cone head 71, which is connected to a high-strength bolt 72. A threaded groove 73 is provided at a position corresponding to the high-strength bolt 72 on the connecting ball 4. The threaded groove 73 is threadedly connected to the high-strength bolt 72. A hexagonal sleeve 74 is sleeved on the high-strength bolt 72. The hexagonal sleeve 74 is located between the cone head 71 and the connecting ball 4. A fastening pin 75 is provided on the hexagonal sleeve 74, which is connected to the high-strength bolt 72.

[0034] It is worth noting that the head of the high-strength bolt 72 is located in the cone head 71 , and the rod of the high-strength bolt 72 passes through the cone head 71 .

[0035] It is worth noting that the fixing ring 81 is fixedly connected with a fixing sleeve 9 , and the fixing sleeve 9 is connected to the rod unit 6 via fixing bolts 10 .

[0036] It is worth mentioning that the spring telescopic rod 82 includes a cylinder 821, in which a movable block 822 is provided. The two sides of the movable block 822 are respectively connected to the spring 823 and the movable rod 824, and one end of the movable rod 824 away from the movable block 822 passes through the cylinder 821.

[0037] It is worth emphasizing that a protective washer 11 is provided at one end of the protective sleeve 83 close to the connecting ball 4. The protective washer 11 is in close contact with the outer surface of the connecting ball 4. The protective washer 11 makes the protective sleeve 83 fit the connecting ball 4 more closely and improves the sealing effect.

[0038] Working principle and process: Now, two protection components 8 are sleeved on the rod unit 6 and are located near the two ends. The head of the high-strength bolt 72 of the bolt assembly 7 is in the cone head 71, and the rod of the high-strength bolt 72 passes through the cone head 71. The cone head 71 is fixed to the two ends of the rod unit 6. The hexagonal sleeve 74 is sleeved on the rod of the high-strength bolt 72, and the high-strength bolt 72 and the hexagonal sleeve 74 are connected by the fastening pin 75. The rod of the high-strength bolt 72 is screwed into the corresponding thread groove 7 on the connecting ball 4 by rotating the hexagonal sleeve 74. 3, the rod unit 6 can be connected, the protection assembly 8 can be pushed, the protection sleeve 83 is located outside the bolt assembly 7, and the protection washer 11 on the protection sleeve 83 is fitted with the connecting ball 4, and the fixing ring 81 is pushed again to compress the spring 823 of the spring telescopic rod 82, and the fixing bolt 10 is connected to the fixing sleeve 9 to fix the position of the fixing ring 81. The protection sleeve 83 can be pushed to move a distance, so that the bolt assembly 7 can be leaked, so as to facilitate the regular maintenance of the bolt assembly 7, which is beneficial to the use of the three-way cross grid.

[0039] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0040] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A three-way cross grid for a large span, comprising a primary plane truss (1), a secondary plane truss (2), and a tertiary plane truss (3) that cross each other in three different directions, characterized in that: A connecting ball (4) is provided at the intersection of the primary plane truss (1), the secondary plane truss (2), and the tertiary plane truss (3); a vertical rod (5) is connected between the upper and lower corresponding connecting balls (4); the primary plane truss (1), the secondary plane truss (2), the tertiary plane truss (3), and the vertical rod (5) are all composed of a different number of rod units (6); both ends of the rod units (6) are connected to the connecting ball (4) via a bolt assembly (7); and a protective assembly (8) is provided on the outer side of the bolt assembly (7); The protection assembly (8) comprises a fixing ring (81), the fixing ring (81) being sleeved on the rod unit (6), a plurality of evenly distributed spring telescopic rods (82) being connected to one side of the fixing ring (81), the ends of the spring telescopic rods (82) being connected to protection sleeves (83), the protection sleeves (83) being sleeved on the rod unit (6), the protection sleeves (83) being located outside the bolt assembly (7), and a side of the protection sleeves (83) away from the spring telescopic rods (82) being in close contact with the connection ball (4).

2. A three-way cross grid for large spans according to claim 1, characterized in that: The angle between the two intersecting bar elements (6) is 60 degrees.

3. The three-way cross grid for large spans according to claim 1, characterized in that: The grids formed by the intersection of the primary plane trusses (1), the secondary plane trusses (2), the tertiary plane trusses (3) and the vertical rods (5) are all regular triangles.

4. The three-way cross grid for large spans according to claim 1, characterized in that: The bolt assembly (7) comprises a cone head (71), the cone head (71) being connected to a high-strength bolt (72), a thread groove (73) being provided at a position on the connecting ball (4) corresponding to the high-strength bolt (72), the thread groove (73) being threadedly connected to the high-strength bolt (72), a hexagonal sleeve (74) being sleeved on the high-strength bolt (72), the hexagonal sleeve (74) being located between the cone head (71) and the connecting ball (4), a fastening pin (75) being provided on the hexagonal sleeve (74), and the fastening pin (75) being connected to the high-strength bolt (72).

5. The three-way cross grid for large spans according to claim 4, characterized in that: The head of the high-strength bolt (72) is located inside the cone head (71), and the rod of the high-strength bolt (72) passes through the cone head (71).

6. The three-way cross grid for large spans according to claim 1, characterized in that: The fixing ring (81) is fixedly connected to a fixing sleeve (9), and the fixing sleeve (9) is connected to the rod unit (6) via a fixing bolt (10).

7. The three-way cross grid for large spans according to claim 1, characterized in that: The spring telescopic rod (82) comprises a cylinder (821), a movable block (822) is arranged inside the cylinder (821), two sides of the movable block (822) are respectively connected to a spring (823) and a movable rod (824), and one end of the movable rod (824) away from the movable block (822) passes through the cylinder (821).

8. The three-way cross grid for large spans according to claim 1, characterized in that: A protective washer (11) is provided at one end of the protective sleeve (83) close to the connecting ball (4), and the protective washer (11) is in close contact with the outer surface of the connecting ball (4).

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