Reverse hollow bolt ball net rack connecting node and application method

Abstract

The application provides a reverse hollow bolt ball net rack connecting node and an application method. The node structure comprises a hollow bolt ball, high-strength bolts and a rod piece. A plurality of through holes are formed in the hollow bolt ball. The threaded ends of the high-strength bolts pass into the through holes from the hollow bolt ball and extend out of the through holes. One end of the rod piece is provided with a first internal thread hole matched with the high-strength bolts. The threaded ends of the high-strength bolts are screwed into the first internal thread hole through a rotating auxiliary piece until the rod piece and the hollow bolt ball are fastened. The application solves the problems of heavy weight, large volume and the like of the traditional node, and has high assembly degree, transportation safety, convenient assembly and easy use.

Description

Technical Field

[0001] This invention relates to the field of bolted ball space frame technology, specifically to the connection node and application method of reverse hollow bolted ball space frame. Background Technology

[0002] With the development of the construction industry, space frame structures have been widely used in various large-span stadium buildings. Currently, the commonly used space frame node forms are welded ball nodes and bolted ball nodes. Welded ball nodes require on-site construction, which has many drawbacks. However, using bolted ball nodes in space frame structures allows for a high level of standardization and assembly, and bolted balls also possess good mechanical properties. However, most bolted ball nodes used in current projects are solid bolted balls, and due to weight limitations, it is impossible to make bolted balls with a large surface area, thus limiting the number of connecting members. Furthermore, components on traditional bolted balls are prone to damage during transportation. To address these issues, a reverse bolted ball space frame connection node form that makes the bolted ball a hollow sphere has been invented to solve these problems. Summary of the Invention

[0003] To address the problems existing in the background technology, the present invention proposes a reverse hollow bolt ball grid connection node, including a hollow bolt ball, a high-strength bolt, and a rod. The hollow bolt ball has multiple through holes. The threaded end of the high-strength bolt passes through the through holes from inside the hollow bolt ball and extends to the outside of the through holes. One end of the rod has a first internal thread hole that matches the thread of the high-strength bolt. The threaded end of the high-strength bolt is screwed into the first internal thread hole through a rotating auxiliary component until the rod and the hollow bolt ball are fastened together.

[0004] Preferably, the rotating auxiliary component includes a sleeve and a stud. A limiting hole is formed radially on one side of the sleeve, and a stud groove is formed axially on the side wall of the high-strength bolt. The sleeve is fitted onto the outer wall of the threaded end of the high-strength bolt, and the stud passes through the limiting hole. The end of the stud near the high-strength bolt extends into the stud groove, and the stud slides in contact with the stud groove. The stud groove becomes deeper towards the end near the hollow bolt ball.

[0005] Preferably, the rotating auxiliary component includes a sleeve and an annular key. The outer diameter of the annular key matches the diameter of the through hole on the hollow bolt ball. The annular key is embedded in the through hole. The center of the annular key has a second internal thread hole that matches the thread of the high-strength bolt. An extension key is provided on one side of the annular key. The sleeve is fitted onto the outer wall of the threaded end of the high-strength bolt. A slot is provided on the side of the sleeve near the annular key, and the extension key is inserted into the slot.

[0006] Preferably, the hollow bolt ball is composed of two hollow hemispheres joined together.

[0007] The application method of reverse hollow bolt spherical grid connection nodes includes the following steps:

[0008] S1. Open through holes in the two hollow hemispheres. The location and number of through holes are determined according to construction needs.

[0009] S2. Insert the high-strength bolt into the through hole from inside the hollow hemisphere, and install the rotating auxiliary component onto the threaded end of the high-strength bolt hollow hemisphere.

[0010] S3. Weld the two hollow hemispheres together to form a hollow bolt ball;

[0011] S4. Transport the hollow bolt ball to the construction site, and use the rotating auxiliary component to screw the threaded end of the high-strength bolt into the first internal thread hole of the rod until the rod and the hollow bolt ball are fastened together.

[0012] Preferably, step S2 includes the following steps:

[0013] A high-strength bolt with a stud slot is inserted into the through hole, and a sleeve is fitted onto the outer wall of the threaded end of the high-strength bolt to cover the thread of the high-strength bolt. The stud is inserted from the limiting hole of the sleeve, and the end of the stud near the high-strength bolt extends into the stud slot.

[0014] Preferably, step S4 includes the following steps: transporting the hollow bolt ball to the construction site, pressing the stud to make the stud slide along the stud groove, thereby driving the sleeve to move towards the deep end of the stud groove until the stud is stuck into the deep end of the stud groove and the threaded end of the high-strength bolt is exposed; inserting the threaded end of the high-strength bolt into the first internal thread hole of the rod, rotating the sleeve to drive the high-strength bolt to rotate, and tightening the high-strength bolt to the rod to achieve installation.

[0015] Preferably, S2 includes the following steps: embedding the annular key in the through hole, and screwing a high-strength bolt from the hollow hemisphere into the second internal thread hole of the annular key, wherein the threaded end of the high-strength bolt does not extend outside the annular key.

[0016] Preferably, step S4 includes the following steps: transporting the hollow bolt ball to the construction site, pulling out the annular key, and tightening the annular key to one end of the high-strength bolt located inside the hollow bolt ball, so that the threaded end of the high-strength bolt is exposed; fitting a sleeve onto the outer wall of the threaded end of the high-strength bolt, and moving the sleeve closer to the annular key until the extended key on the annular key is inserted into the slot of the sleeve; inserting the threaded end of the high-strength bolt into the first internal thread hole of the rod, rotating the sleeve to drive the high-strength bolt to rotate, and tightening the high-strength bolt to the rod to achieve installation.

[0017] The beneficial effects of this invention are as follows: The hollow bolt ball structure significantly reduces the weight of the joint. Compared to traditional solid balls, the bolt ball of this invention can be made larger to connect more members. Furthermore, the high-strength bolt is arranged in reverse, extending from inside the hollow bolt ball outwards. During transportation, the threaded end of the high-strength bolt can be covered by a ring key or sleeve and placed inside the hollow bolt ball, minimizing the risk of damage. During use, the threaded end of the high-strength bolt is exposed by moving the sleeve or ring key. This invention solves the problems of heavy weight and limited size in traditional joints, and offers a high degree of assembly, safe transportation, convenient assembly, and ease of use. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 This is a schematic diagram showing the connection relationship of the components in Embodiment 1 of the present invention;

[0020] Figure 3 This is an exploded view of the structure of Embodiment 1 of the present invention;

[0021] Figure 4 This is a schematic diagram of the connection relationship between the high-strength bolt and the sleeve in Embodiment 1 of the present invention;

[0022] Figure 5 This is a schematic diagram of the high-strength bolt structure according to Embodiment 1 of the present invention;

[0023] Figure 6 This is a schematic diagram showing the connection relationship of the components in Embodiment 2 of the present invention;

[0024] Figure 7 This is an exploded view of the structure of Embodiment 2 of the present invention;

[0025] Figure 8 This is a schematic diagram of the hollow bolt ball structure in the transportation state according to Embodiment 2 of the present invention;

[0026] Figure 9 This is a schematic diagram of the sleeve and annular key structure in Embodiment 2 of the present invention.

[0027] The following are the labels in the diagram: 1. Hollow bolt ball; 2. High-strength bolt; 3. Stud; 4. Sleeve; 5. Rod; 6. Extension key; 7. Stud slot; 8. Annular key. Detailed Implementation

[0028] To make the present invention clearer and more understandable, the technical solution of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the given embodiments are only one implementation method and do not represent all embodiments.

[0029] Example 1:

[0030] Combined with appendix Figure 1-5 The reverse hollow bolt ball 1 space frame connection node includes a hollow bolt ball 1, a high-strength bolt 2, and a rod 5. The hollow bolt ball 1 has multiple through holes. The threaded end of the high-strength bolt 2 passes through the through holes from the hollow bolt ball 1 and extends to the outside of the through holes. One end of the rod 5 has a first internal thread hole that matches the thread of the high-strength bolt 2. The threaded end of the high-strength bolt 2 is screwed into the first internal thread hole through a rotating auxiliary component until the rod 5 and the hollow bolt ball 1 are fastened together.

[0031] Specifically, the rotating auxiliary component includes a sleeve 4 and a stud 3. A limiting hole is formed radially on one side of the sleeve 4. A stud groove 7 is formed axially on the side wall of the high-strength bolt 2. The sleeve 4 is fitted onto the outer wall of the threaded end of the high-strength bolt 2. The stud 3 passes through the limiting hole. The end of the stud 3 near the high-strength bolt 2 extends into the stud groove 7. The stud 3 and the stud groove 7 are in sliding contact. The stud groove 7 is inclined and deepened towards the end near the hollow bolt ball 1.

[0032] Specifically, the hollow bolt ball 1 is composed of two hollow hemispheres joined together.

[0033] The application method of the reverse hollow bolt ball 1 space frame connection node includes the following steps:

[0034] S1. Open through holes in the two hollow hemispheres. The location and number of through holes are determined according to construction needs.

[0035] S2. Insert the high-strength bolt 2 with the stud slot 7 into the through hole, and put the sleeve 4 on the outer wall of the threaded end of the high-strength bolt 2 to cover the thread of the high-strength bolt 2. The stud 3 is inserted from the limiting hole of the sleeve 4, and the end of the stud 3 near the high-strength bolt 2 (i.e. the end of the stud 3) extends into the stud slot 7. At this time, the end of the stud 3 is stuck at the shallowest part of the stud slot 7.

[0036] S3. Weld the two hollow hemispheres together to form a hollow bolt ball 1;

[0037] S4. Transport the hollow bolt ball 1 to the construction site, press the stud 3, and let the stud 3 slide along the stud groove 7, thereby driving the sleeve 4 to move towards the deep end of the stud groove 7 until the stud 3 is stuck into the deep end of the stud groove 7. The threaded end of the high-strength bolt 2 is exposed through the deep groove. Insert the threaded end of the high-strength bolt 2 into the first internal thread hole of the rod 5, transmit torque through the stud 3, rotate the sleeve 4 to drive the high-strength bolt 2 to rotate, and tighten the high-strength bolt 2 to the rod 5 to complete the installation.

[0038] Example 2:

[0039] Combined with appendix Figure 6-9The reverse hollow bolt ball 1 space frame connection node includes a hollow bolt ball 1, a high-strength bolt 2, and a rod 5. The hollow bolt ball 1 has multiple through holes. The threaded end of the high-strength bolt 2 passes through the through holes from the hollow bolt ball 1 and extends to the outside of the through holes. One end of the rod 5 has a first internal thread hole that matches the thread of the high-strength bolt 2. The threaded end of the high-strength bolt 2 is screwed into the first internal thread hole through a rotating auxiliary component until the rod 5 and the hollow bolt ball 1 are fastened together.

[0040] Specifically, the rotating auxiliary component includes a sleeve 4 and an annular key 8. The outer diameter of the annular key 8 matches the diameter of the through hole on the hollow bolt ball 1. The annular key 8 is embedded in the through hole. The center of the annular key 8 is provided with a second internal thread hole that matches the thread of the high-strength bolt 2. An external key 6 is provided on one side of the annular key 8. The sleeve 4 is sleeved on the outer wall of the threaded end of the high-strength bolt 2. A slot is provided on the side of the sleeve 4 near the annular key 8, and the external key 6 is inserted into the slot.

[0041] Specifically, the hollow bolt ball 1 is composed of two hollow hemispheres joined together.

[0042] The application method of the reverse hollow bolt ball 1 space frame connection node includes the following steps:

[0043] S1. Open through holes in the two hollow hemispheres. The location and number of through holes are determined according to construction needs.

[0044] S2. The annular key 8 is embedded in the through hole, and the high-strength bolt 2 is screwed into the second internal thread hole of the annular key 8 from the hollow hemisphere, and the thread end of the high-strength bolt 2 does not extend outside the annular key 8.

[0045] S3. Weld the two hollow hemispheres together to form a hollow bolt ball 1. Maintain the above state during transportation. The high-strength bolt 2 is hidden in the hollow bolt ball 1 to avoid damage to the high-strength bolt 2.

[0046] S4. Transport the hollow bolt ball 1 to the construction site, pull out the ring key 8, and tighten the ring key 8 to the end of the high-strength bolt 2 located inside the hollow bolt ball 1, so that the threaded end of the high-strength bolt 2 is exposed; put the sleeve 4 on the outer wall of the threaded end of the high-strength bolt 2, and move the sleeve 4 closer to the ring key 8 until the extended key 6 on the ring key 8 is inserted into the slot of the sleeve 4, and the torque is transmitted through the extended key 6; insert the threaded end of the high-strength bolt 2 into the first internal thread hole of the rod 5, rotate the sleeve 4 to drive the high-strength bolt 2 to rotate, and tighten the high-strength bolt 2 to the rod 5 to complete the installation.

[0047] The above embodiments merely illustrate the basic principles and characteristics of the present invention, but are not limited to these embodiments. It should be understood that those skilled in the art can make various changes and modifications to the present invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A reverse hollow bolt ball grid connection node, characterized in that: The device includes a hollow bolt ball (1), a high-strength bolt (2), and a rod (5). The hollow bolt ball (1) has multiple through holes. The threaded end of the high-strength bolt (2) passes through the through holes from the hollow bolt ball (1) and extends to the outside of the through holes. One end of the rod (5) is provided with a first internal thread hole that matches the thread of the high-strength bolt (2). The threaded end of the high-strength bolt (2) is screwed into the first internal thread hole through a rotating auxiliary part until the rod (5) and the hollow bolt ball (1) are fastened together. The rotating auxiliary component includes a sleeve (4) and an annular key (8). The outer diameter of the annular key (8) matches the diameter of the through hole on the hollow bolt ball (1). The annular key (8) is embedded in the through hole. The center of the annular key (8) is provided with a second internal thread hole that matches the thread of the high-strength bolt (2). An external key (6) is provided on one side of the annular key (8). The sleeve (4) is sleeved on the outer wall of the thread end of the high-strength bolt (2). A slot is provided on the side of the sleeve (4) near the annular key (8). The external key (6) is inserted into the slot.

2. The reverse hollow bolt ball grid connection node according to claim 1, characterized in that: The hollow bolt ball (1) is composed of two hollow hemispheres joined together.

3. The application method of the reverse hollow bolt ball grid connection node, implemented based on the reverse hollow bolt ball grid connection node as described in claim 1 or 2, is characterized in that, Includes the following steps: S1. Make through holes on the two hollow hemispheres. The location and number of through holes are determined according to the construction needs. S2. Insert the high-strength bolt (2) into the through hole from the hollow hemisphere and install the rotating auxiliary part to the threaded end of the hollow hemisphere of the high-strength bolt (2). S3. Weld the two hollow hemispheres together to form a hollow bolt ball (1). S4. Transport the hollow bolt ball (1) to the construction site and use the rotating auxiliary part to screw the threaded end of the high-strength bolt (2) into the first internal thread hole of the rod (5) until the rod (5) and the hollow bolt ball (1) are fastened together.

4. The application method of the reverse hollow bolt ball grid connection node according to claim 3, characterized in that, The S2 includes the following steps: embedding the annular key (8) in the through hole, and screwing the high-strength bolt (2) from the hollow hemisphere into the second internal thread hole of the annular key (8), and the thread end of the high-strength bolt (2) does not extend outside the annular key (8).

5. The application method of the reverse hollow bolt ball grid connection node according to claim 4, characterized in that, The S4 includes the following steps: transporting the hollow bolt ball (1) to the construction site, pulling out the ring key (8), and tightening the ring key (8) to one end of the high-strength bolt (2) inside the hollow bolt ball (1), so that the threaded end of the high-strength bolt (2) is exposed; putting the sleeve (4) on the outer wall of the threaded end of the high-strength bolt (2), and moving the sleeve (4) closer to the ring key (8) until the extended key (6) on the ring key (8) is inserted into the slot of the sleeve (4); inserting the threaded end of the high-strength bolt (2) into the first internal thread hole of the rod (5), rotating the sleeve (4) to drive the high-strength bolt (2) to rotate, and tightening the high-strength bolt (2) and the rod (5) to achieve installation.

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