A bolt connecting device suitable for steel structure

Abstract

This application relates to a bolt connection device suitable for steel structures, comprising a bolt ball, a connecting steel pipe, and a connector; the bolt ball has at least three threaded holes, and the connecting steel pipe includes a hollow tube body, a tapered tube head, and a limiting inner ring; the connector is used to connect the connecting steel pipe to the threaded holes; the connector includes a bolt body, a torsion sleeve, and a pin thread. The bolt connection device described in this application achieves the connection of multiple connecting steel pipes and bolt balls through the connector, and each bolt ball can be connected to a suitable threaded hole according to the steel structure design requirements. In addition to the traditional bolt connection method, the connector's pin thread and pin thread hole also provide a riveting assembly for riveting connection, which is non-removable and provides better posture retention.

Description

Technical Field

[0001] This application relates to the field of steel structure technology, and specifically to a bolt connection device suitable for steel structures. Background Technology

[0002] A bolted-ball structure is a spatial grid structure formed by connecting members with spherical nodes using high-strength bolts. Its core components include bolted balls, high-strength bolts, and sleeves. The bolted-ball structure uses the preload of the bolts to generate friction, transferring the axial force of the members to the bolted balls, thus forming a spatial force-bearing system. Its three-dimensional hinged characteristics allow it to adapt to complex loads, making it particularly suitable for large-span curved surface structures.

[0003] The existing bolt ball structure has the following problems: the pin thread used to transfer the torque of the torsion sleeve to the bolt body is prone to coming out during long-distance transportation. Therefore, it is necessary to design a bolt ball structure that can be stably fixed. Summary of the Invention

[0004] A bolted connection device suitable for steel structures, comprising:

[0005] A bolt ball, wherein the bolt ball has at least three threaded holes;

[0006] The connecting steel pipe includes a hollow pipe body, a tapered pipe head that gradually narrows from the end of the hollow pipe body, and a limiting inner ring provided at the narrow end of the tapered pipe head;

[0007] Connector, used to connect a steel pipe to a threaded hole;

[0008] The connector includes:

[0009] The bolt body includes at least a threaded rod extending to the left through the inner ring of the limiting ring and an internal hexagonal head located on the right side of the inner ring of the limiting ring. The upper end of the threaded rod is also provided with a pin hole.

[0010] A torsion sleeve is slidably fitted onto the threaded rod. The outer wall of the torsion sleeve cross section is formed into a regular hexagon. A length slot is formed on the upper end face of the torsion sleeve along its length direction. A torsion crossbar is also provided on the outer wall of the torsion sleeve.

[0011] A pin threaded rod passes through the length slot and is screwed into the pin threaded hole.

[0012] It also includes a riveting assembly, which includes a riveting cavity and a riveting end;

[0013] The riveting cavity includes a lower through hole at the lower end of the pin screw hole and a riveting circular cavity at the lower end of the lower through hole. The inner diameter of the riveting circular cavity is larger than the inner diameter of the lower through hole. A circular stop post is also provided at the lower end of the riveting circular cavity, and an extension cone head that is narrower at the top and wider at the bottom is also provided at the upper end of the circular stop post.

[0014] The riveting end includes a riveting column located at the lower end of the pin screw and engaged with the lower through hole, and an extended circular groove formed at the lower end of the riveting column.

[0015] The outer diameter of the circular stop post is not less than the inner diameter of the lower through hole.

[0016] The outer diameter of the circular stop post is equal to the inner diameter of the lower through hole.

[0017] The inner diameter of the extension groove is larger than the outer diameter of the narrow circle at the top of the extension cone.

[0018] Beneficial effects:

[0019] The bolt connection device described in this case connects multiple connecting steel pipes and bolt balls through a connector. Each bolt ball can be connected by selecting a suitable threaded hole according to the steel structure design requirements.

[0020] The bolt connection device described in this case has a modular design, which can be disassembled and stacked for easy transportation, and then the bolt ball and connecting steel pipe are connected and fixed on site.

[0021] The bolt connection device described in this case provides a riveting assembly for riveting connection between the connector's pin thread and pin hole, in addition to the traditional bolt connection method. The riveting method is non-removable and has better posture retention. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of one embodiment of the bolt connection device.

[0023] Figure 2 This is a schematic diagram of one embodiment of the bolt ball.

[0024] Figure 3 This is a schematic diagram of one embodiment of the connector.

[0025] Figure 4 This is an exploded view of one embodiment of the connector.

[0026] Figure 5 This is a schematic diagram of one embodiment of the torsion sleeve.

[0027] Figure 6 This is a cross-sectional view of one embodiment of the torsion sleeve.

[0028] Figure 7 This is a partial schematic diagram of one embodiment of the bolt connection device.

[0029] Figure 8 yes Figure 7 A sectional view of section A-A in one state.

[0030] Figure 9 yes Figure 7 A cross-sectional view of section A-A in another state.

[0031] Figure 10 This is a cross-sectional view of one embodiment of the riveting assembly.

[0032] In the picture:

[0033] 9. Bolt ball; 91. Threaded hole;

[0034] 8. Connecting steel pipe; 81. Hollow pipe body; 82. Tapered pipe head; 83. Limiting inner ring;

[0035] 7. Connectors;

[0036] 1. Bolt body; 11. Threaded shank; 12. Socket head; 13. Pin hole;

[0037] 2. Torsion sleeve; 21. Length slot; 22. Torsion crossbar;

[0038] 3. Pin and screw;

[0039] 4. Riveting components;

[0040] 41. Riveted cavity; 411. Lower through hole; 412. Riveted circular cavity; 413. Circular stop post; 414. Extending cone head;

[0041] 42. Riveted end, 421. Riveted column, 422. Extended circular groove. Detailed Implementation

[0042] A bolted connection device suitable for steel structures, comprising:

[0043] Bolt ball 9, wherein the bolt ball 9 is provided with at least three threaded holes 91;

[0044] The connecting steel pipe 8 includes a hollow pipe body 81, a tapered pipe head 82 that gradually narrows from the end of the hollow pipe body 81, and a limiting inner ring 83 provided at the narrow end of the tapered pipe head 82;

[0045] Connector 7 is used to connect the connecting steel pipe 8 to the threaded hole 91;

[0046] The connector 7 includes:

[0047] Bolt body 1, the bolt body 1 includes at least a threaded rod 11 that passes through the limiting inner ring 83 to the left and an internal hexagon head 12 located on the right side of the limiting inner ring 83, and the upper end of the threaded rod 11 is also provided with a pin screw hole 13.

[0048] The torsion sleeve 2 is slidably sleeved on the threaded rod body 11. The outer wall of the cross section of the torsion sleeve 2 is formed into a regular hexagon. The upper end face of the torsion sleeve 2 is formed with a length slot 21 along its length direction. The outer wall of the torsion sleeve 2 is also provided with a torsion crossbar 22.

[0049] The pin screw 3 passes through the length slot 21 and is screwed into the pin screw hole 13.

[0050] It also includes a riveting assembly 4, which includes a riveting cavity 41 and a riveting end 42;

[0051] The riveting cavity 41 includes a lower through hole 411 located at the lower end of the pin screw hole 13 and a riveting circular cavity 412 located at the lower end of the lower through hole 411. The inner diameter of the riveting circular cavity 412 is larger than the inner diameter of the lower through hole 411. A circular stop post 413 is also provided at the lower end of the riveting circular cavity 412. An extension cone 414 that is narrow at the top and wide at the bottom is also provided at the upper end of the circular stop post 413.

[0052] The riveting end 42 includes a riveting column 421 located at the lower end of the pin screw 3 and engaged with the lower through hole 411, and an extended circular groove 422 formed at the lower end of the riveting column 421.

[0053] The outer diameter of the circular stop post 413 is not less than the inner diameter of the lower through hole 411.

[0054] The outer diameter of the circular stop post 413 is equal to the inner diameter of the lower through hole 411.

[0055] The inner diameter of the extension groove 422 is larger than the outer diameter of the narrow circle at the top of the extension cone 414.

[0056] The bolt connection device described in this case connects the bolt ball 9 and the connecting steel pipe 8 via a connector 7:

[0057] Insert the threaded shank 11 of the bolt body 1 into the threaded hole 91;

[0058] As per the instruction manual Figure 8 -9 is shown:

[0059] Rotating the torsion sleeve 2 causes the length slot 21 to act on the pin screw 3, thereby driving the bolt body 1 to rotate. The bolt body 1 rotates step by step within the threaded hole 91.

[0060] The internal hexagonal head 13 of the bolt body 1 gradually drives the 8 to press tightly against the bolt ball 9, thus completing the fixing.

[0061] The bolt connection device described in this case provides two assembly methods for its connector 7:

[0062] Method 1, bolt connection:

[0063] The pin screw 3 is directly screwed into the pin screw hole 13, which facilitates disassembly.

[0064] Method 2, riveting connection:

[0065] The riveting end 42 passes downward through the pin screw hole 13 and the lower through hole 411 and then enters the riveting cavity 412;

[0066] The extension cone 414 is gradually inserted into the extension groove 422 and pushed outward. The outer diameter of the extension groove 422 is larger than the lower through hole 411, so the riveting end 42 cannot be pulled out upward.

Claims

1. A bolt connection device suitable for steel structures, characterized in that: include: A bolt ball (9) having at least three threaded holes (91); The connecting steel pipe (8) includes a hollow pipe body (81), a tapered pipe head (82) that gradually narrows from the end of the hollow pipe body (81), and a limiting inner ring (83) provided at the narrow end of the tapered pipe head (82); Connector (7) for connecting steel pipe (8) to threaded hole (91); The connector (7) includes: Bolt body (1), the bolt body (1) includes at least a threaded rod (11) that passes through the limiting inner ring (83) to the left and an internal hexagonal head (12) located on the right side of the limiting inner ring (83), and the upper end of the threaded rod (11) is also provided with a pin screw hole (13). A torsion sleeve (2) is slidably sleeved on the threaded rod (11). The outer wall of the cross section of the torsion sleeve (2) is formed into a regular hexagon. The upper end face of the torsion sleeve (2) is formed with a length slot (21) along its length direction. The pin screw (3) passes through the length slot (21) and is screwed into the pin screw hole (13).

2. The bolt connection device suitable for steel structures according to claim 1, characterized in that: The outer wall of the torsion sleeve (2) is also provided with a torsion crossbar (22).

3. A bolt connection device suitable for steel structures according to claim 2, characterized in that: It also includes a riveting assembly (4), which includes a riveting cavity (41) and a riveting end (42); The riveting cavity (41) includes a lower through hole (411) provided at the lower end of the pin screw hole (13) and a riveting circular cavity (412) provided at the lower end of the lower through hole (411). The inner diameter of the riveting circular cavity (412) is larger than the inner diameter of the lower through hole (411). The lower end of the riveting circular cavity (412) is also provided with a circular stop post (413), and the upper end of the circular stop post (413) is also provided with an extension cone head (414) that is narrow at the top and wide at the bottom. The riveting end (42) includes a riveting column (421) located at the lower end of the pin screw (3) and engaged with the lower through hole (411), and an extension groove (422) formed at the lower end of the riveting column (421).

4. A bolt connection device suitable for steel structures according to claim 3, characterized in that: The outer diameter of the circular stop post (413) is not less than the inner diameter of the lower through hole (411).

5. A bolt connection device suitable for steel structures according to claim 4, characterized in that: The outer diameter of the circular stop post (413) is equal to the inner diameter of the lower through hole (411).

6. A bolt connection device suitable for steel structures according to claim 5, characterized in that: The inner diameter of the extension groove (422) is larger than the outer diameter of the upper narrow circle of the extension cone (414).

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