Bolt-sphere net rack rod piece capable of axially stretching out and drawing back and transmitting axial force after being connected

Abstract

The bolt-sphere net rack rod piece capable of axially stretching out and drawing back to adjust the length during installation and transmitting axial force after connection is completed is characterized in that the bolt-sphere net rack rod piece is composed of a round pipe, a front connecting rod and a rear connecting rod, the round pipe is connected with the front connecting rod through threads, and the round pipe is connected with the rear connecting rod through threads; the length of the rod piece can be adjusted by rotating the front connecting rod and the rear connecting rod. When a pre-internal force is applied, the front connecting rod can be connected with the bolt ball through threads, and the front connecting rod is not connected with the round pipe and is suspended in the empty bin; and the rear connecting rod is in threaded connection with the circular tube and the bolt ball. A jack and other pre-internal force loading devices are installed on the front connecting rod and the rear connecting rod, and pre-pressure or pre-tension force is applied to the bolt-sphere net rack; fixing the front connecting rod and the rear connecting rod, and rotating the round pipe to connect the round pipe and the front connecting rod through threads; and removing the pre-internal force loading device to complete the application of the pre-internal force.

Description

Technical Field

[0001] The present invention relates to the technical field of bolted spherical grid structures for buildings, and particularly to a member of a bolted spherical grid that can axially expand and contract and can transmit axial forces after connection. Background Art

[0002] Bolted spherical grids are widely used in the field of steel structure buildings due to their simple structure, convenient installation, and no additional joint eccentricity. As an important part of the grid, the quality of the members directly affects the safety, reliability, and service life of the entire grid. Due to the working environment of the grid, bolted spherical grids are often subjected to high temperature, high pressure, strong corrosion, or collision, resulting in diseases such as corrosion and bending of some members, and damaged members need to be replaced in a timely manner. During use, since the bolted spherical grid has deformed, the distance between two adjacent bolt balls of the members will change, and it is difficult for the members manufactured according to the original design drawings to match the deformed grid. Customizing according to the actual distance requires high-altitude operation measurement, which increases the difficulty of replacement work. If a member with adjustable length is designed, it will bring convenience to the replacement of members.

[0003] For bolted spherical grids that need to adjust the internal force of the structure, it is required to apply pre-internal forces to some of the replaced bolted spherical grid members. At this time, this adjustable member can be used in cooperation with the pre-internal force application device to adjust or restore the stress state of the structure. Summary of the Invention

[0004] The purpose of the present invention is to design a member of a bolted spherical grid that can axially expand and contract to adjust the length during installation and can transmit axial forces after connection, so as to match the bolted spherical grid after overall deformation when replacing members. This member can be used to apply pre-internal forces.

[0005] A member of a bolted spherical grid that can axially expand and contract and can transmit axial forces after connection is composed of a circular tube, a front connecting rod, and a rear connecting rod. The circular tube and the front connecting rod are connected by threads, and the circular tube and the rear connecting rod are connected by threads. The length of the member can be adjusted by rotating the front connecting rod and the rear connecting rod. When applying pre-internal forces, the front connecting rod can be first connected to the bolt ball by threads, and the front connecting rod is not connected to the circular tube and hangs in the empty cavity; the rear connecting rod is connected to the circular tube by threads, and the rear connecting rod is connected to the bolt ball by threads. A pre-internal force loading device such as a jack is installed on the front connecting rod and the rear connecting rod to apply pre-pressure or pre-tension to the bolted spherical grid; the front connecting rod and the rear connecting rod are fixed, and the circular tube is rotated so that the circular tube and the front connecting rod are connected by threads; the pre-internal force loading device is removed to complete the application of pre-internal forces. Brief Description of the Drawings

[0006] Figure 1 It is a schematic diagram of the bolted spherical grid disclosed by the present invention.

[0007] Figure 2 It is a schematic diagram of the member of the bolted spherical grid disclosed by the present invention.

[0008] Figure 3 It is a schematic diagram of the circular tube disclosed in the present invention.

[0009] Figure 4 It is a schematic diagram of the front link disclosed in the present invention.

[0010] Figure 5 It is a schematic diagram of the rear link disclosed in the present invention.

[0011] Figure 6 It is a schematic diagram of the bolts and hexagonal sleeves of the front link and the rear link disclosed in the present invention.

[0012] Figure 7 It is a bolted spherical grid member before applying pre-internal force disclosed in the present invention.

[0013] Figure 8 It is a bolted spherical grid member after applying pre-internal force disclosed in the present invention. Specific Embodiments

[0014] Next, in combination with the embodiments of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described. The embodiments described here are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0015] Next, the present invention will be further introduced with reference to the accompanying drawings. As Figure 2 shown, the present invention discloses a bolted spherical grid member that can axially expand and contract to adjust the length during installation and can transmit axial force after completion of connection. It is characterized in that a bolted spherical grid member that can adjust the length and apply and transmit pre-internal force is composed of a circular tube 2, a front link 3, and a rear link 4.

[0016] As Figure 3 shown, the circular tube 2 includes an empty chamber 23, a front threaded section 21, and a rear threaded section 22.

[0017] As Figure 4 shown, the front link 3 includes a bolt 31, a threaded section 32, a hexagonal sleeve 33, a pin 34, and a hexagonal tube section 35. The bolt 31 can rotate freely within the hexagonal tube section 35. The pin 34 passes through the long hole on the hexagonal sleeve 33 and the round hole on the bolt 31, and the hexagonal sleeve 33 can slide along the long hole on the bolt 31. The link 3 can be rotated by clamping the hexagonal tube section 35 with a wrench, and the bolt 31 can be rotated by clamping the hexagonal sleeve 33 with a wrench. The bolt 31 and the hexagonal sleeve 33 are as Figure 6 shown.

[0018] As Figure 5As shown, the rear connecting rod 4 includes a bolt 41, a threaded section 42, a hexagonal sleeve 43, a pin 44, and a hexagonal pipe section 45. The bolt 41 can rotate freely within the hexagonal pipe section 45. The pin 44 passes through the long hole in the hexagonal sleeve 43 and the round hole in the bolt 41, and the hexagonal sleeve 43 can slide along the long hole on the bolt 41. A wrench can be used to clamp the hexagonal pipe section 35 to rotate the connecting rod 3, and a wrench can be used to clamp the hexagonal sleeve 33 to rotate the bolt 31. The bolt 41 and the hexagonal sleeve 43 are as Figure 6 shown.

[0019] As Figure 2 shown, the front threaded section 21 of the round pipe 2 and the threaded section 32 of the front connecting rod 3 are threadedly connected, and the rear threaded section 22 of the round pipe 2 and the threaded section 42 of the rear connecting rod 4 are threadedly connected. The length of the rod member can be adjusted by rotating the front connecting rod 3 or the rear connecting rod 4.

[0020] When applying pre-internal forces, as Figure 7 shown, first, the bolt 31 of the front connecting rod 3 can be threadedly connected to the bolt sphere 1, and the threaded section 32 of the front connecting rod 3 is not connected to the round pipe 2 and hangs in the empty bin 23; the threaded section 42 of the rear connecting rod 4 is threadedly connected to the rear threaded section 22 of the round pipe 2, and the bolt 41 of the rear connecting rod 4 is threadedly connected to the bolt sphere 1. A pre-internal force loading device such as a jack is installed on the front connecting rod 3 and the rear connecting rod 4 to apply pre-pressure or pre-tension to the bolt sphere grid. As Figure 8 shown, fix the front connecting rod 3 and the rear connecting rod 4, and rotate the round pipe 2 so that the front threaded section 21 of the round pipe 2 and the threaded section 32 of the front connecting rod 3 are threadedly connected; the pre-pressure transmission path becomes bolt sphere 1 - hexagonal sleeve 33 - hexagonal pipe section 35 - threaded section 32 - round pipe 2 - threaded section 42 - hexagonal pipe section 45 - hexagonal sleeve 43 - bolt sphere 1; the pre-tension transmission path becomes bolt sphere 1 - bolt 31 - hexagonal pipe section 35 - threaded section 32 - round pipe 2 - threaded section 42 - hexagonal pipe section 45 - bolt 41 - bolt sphere 1. Remove the pre-internal force loading device to complete the application of the pre-internal forces.

[0021] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. However, any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. The present invention discloses a bolt ball grid rod which can be axially telescopically adjusted in length during installation and can transmit axial force after connection, and is characterized in that: The round tube 2, the front connecting rod 3 and the rear connecting rod 4 form a bolt ball grid rod with adjustable length, which can apply and transmit the pre-internal force.

2. The round tube 2 as claimed in claim 1 comprises a hollow chamber 23, a front threaded section 21 and a rear threaded section 22.

3. The front connecting rod 3 as described in claim 1 comprises a bolt 31, a threaded section 32, a hexagonal sleeve 33, a pin 34 and a hexagonal pipe section 35; the bolt 31 can rotate freely in the hexagonal pipe section 35, the pin 34 passes through the long hole on the hexagonal sleeve 33 and the round hole on the bolt 31, and the hexagonal sleeve 33 can slide along the long hole on the bolt 31; the hexagonal pipe section 35 can be clamped with a wrench to rotate the connecting rod 3, and the hexagonal sleeve 33 can be clamped with a wrench to rotate the bolt 31.

4. The rear connecting rod 4 as described in claim 1 comprises a bolt 41, a threaded section 42, a hexagonal sleeve 43, a pin 44 and a hexagonal pipe section 45; the bolt 41 can rotate freely in the hexagonal pipe section 45, the pin 44 passes through the long hole on the hexagonal sleeve 43 and the round hole on the bolt 41, and the hexagonal sleeve 43 can slide along the long hole on the bolt 41; the hexagonal pipe section 35 can be clamped with a wrench to rotate the connecting rod 3, and the hexagonal sleeve 33 can be clamped with a wrench to rotate the bolt 31.

5. As claimed in claim 1, the front threaded section 21 of the round tube 2 and the threaded section 32 of the front connecting rod 3 are connected by threads, and the rear threaded section 22 of the round tube 2 and the threaded section 42 of the rear connecting rod 4 are connected by threads, and the length of the rod can be adjusted by rotating the front connecting rod 3 or the rear connecting rod 4.

6. The bolt ball grid rod member as claimed in claim 1, when applying the pre-internal force, the bolt 31 of the front connecting rod 3 can be first connected to the bolt ball 1 through a thread, and the threaded section 32 of the front connecting rod 3 is not connected to the round tube 2 but suspended in the empty chamber 23; the threaded section 42 of the rear connecting rod 4 is connected to the rear threaded section 22 of the round tube 2 through a thread, and the bolt 41 of the rear connecting rod 4 is connected to the bolt ball 1 through a thread; a pre-internal force loading device such as a jack is installed on the front connecting rod 3 and the rear connecting rod 4 to apply pre-pressure or pre-tension to the bolt ball grid; the front connecting rod 3 and the rear connecting rod are fixed Rod 4, rotate the round tube 2 to make the front threaded section 21 of the round tube 2 and the threaded section 32 of the front connecting rod 3 connected by threads; the pre-pressure transmission path becomes bolt ball 1-hexagonal sleeve 33-hexagonal pipe section 35-threaded section 32-round tube 2-threaded section 42-hexagonal pipe section 45-hexagonal sleeve 43-bolt ball 1; the pre-tension transmission path becomes bolt ball 1-bolt 31-hexagonal pipe section 35-threaded section 32-round tube 2-threaded section 42-hexagonal pipe section 45-bolt 41-bolt ball 1; remove the pre-internal force loading device to complete the application of the pre-internal force.

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