CN213508891U - Spatial grid structure area non-circular cross section bolt that excels in antiskid connected node that falls - Google Patents

Abstract

The patent discloses a space grid structure takes non-circular cross section bolt anti-skidding connected node that excels in. The node comprises a bolt ball, a conical head or a sealing plate, a high-strength bolt, a sleeve, a pin and a baffle. Wherein the screw rod of the high-strength bolt is divided into a polished rod part with a non-circular section and a thread part along the axis; the inner section of the sleeve is matched with the non-circular section of the bolt polished rod part; the baffle has the same shape as the inner section of the rod piece, but has a slightly smaller size, and the middle of the baffle is hollowed, and the hollowed size is smaller than the diameter length of the high-strength bolt and the nut. Before the high-strength bolt is screwed into the bolt ball, the baffle in the rod piece prevents the bolt from sliding into the rod piece. The sleeve and the high-strength bolt transmit torsion through the contact of the inner wall of the sleeve and the outer wall of the non-circular section of the high-strength bolt, and when the sleeve is tightly jacked by a bolt ball, a seal plate or a conical head, the pin is screwed into the pin hole of the sleeve until the head of the pin is tightly jacked with the deep hole of the bolt. The node avoids the shallow slot on the bolt, so that the bolt is simple and convenient to process, and the node has the advantages of effectively preventing the bolt from sliding into the rod piece and preventing false twisting.

Description

Spatial grid structure area non-circular cross section bolt that excels in antiskid connected node that falls

Technical Field

The patent relates to a node of space grid structure belongs to the building steel construction field.

Background

Space lattice structures have been widely used throughout the world in recent years, especially in China, and the common node forms are welding ball nodes and bolt ball nodes. For the spatial grid structure of the bolt ball joint, the rod piece is connected with the bolt ball joint through a high-strength bolt. Shallow slots and deep slots are carved on the surface of the bolt along the axis direction, a pin hole is formed in the sleeve, the sleeve is sleeved into the bolt during construction and installation, the pin is firstly screwed into the pin hole of the sleeve until the top end of the pin hole is pushed to the shallow slots, the sleeve is rotated to drive the bolt to rotate together through the pin, the bolt can be screwed into the corresponding screw hole of the bolt ball until the surfaces of the sleeve and the bolt ball are tightly pushed, the pin reaches the deep slot of the bolt at the moment, and then the pin is rotated again until the top end of the pin is pushed into the deep slot. In the installation process, the sleeve is sleeved into the bolt rod, then the pin is screwed into the pin hole of the sleeve and is pushed into the bolt shallow groove to prevent the bolt from sliding into the rod piece, and the synchronous rotation of the sleeve and the bolt rod is completed by transmitting torque force through the pin. Due to the small cross section of the pin, when a large torque is required, the pin is easily twisted off, resulting in the bolt not being tightened. The process needs to make shallow grooves on the bolts and the nodes are easy to generate the phenomenon of false twisting.

Disclosure of Invention

In order to overcome the easy fracture of current bolt ball node pin, optimize the antiskid of the bolt that excels in and construct, this patent has proposed a take non-circular cross-section bolt antiskid connected node that falls, and its connected structure includes bolt ball, conical head or shrouding, the bolt that excels in, sleeve, pin and baffle. The structure and the connection method of the bolt ball, the conical head or the sealing plate are the same as those of the traditional bolt ball node; the screw rod of the high-strength bolt is divided into a polished rod part with a non-circular section and a thread part along the axis; the inner section of the sleeve is matched with the non-circular section of the bolt polished rod part, but the size is slightly larger; the baffle is the same as the inner section of the rod piece in shape, but is slightly smaller in size, the middle of the baffle is hollowed, and the hollowed size is smaller than the diameter length of the high-strength bolt and the nut; the sleeve wall is provided with a pin hole matched with the pin; the polished rod part with the non-circular section of the high-strength bolt is provided with a deep hole corresponding to the position of the sleeve pin hole.

Construction and installation steps: (1) the processing and manufacturing modes of the bolt ball, the conical head and the sealing plate and the connection modes of the conical head and the sealing plate and the rod are the same as those of a traditional bolt ball node, firstly, the annular baffle plate is welded inside the rod, wherein the distance from the baffle plate to the outer surface of the sealing plate or the conical head is smaller than the length of the high-strength bolt, so that the bolt cannot slide into the rod in the subsequent construction process, then, the high-strength bolt is placed into the rod, and the conical head or the sealing plate is welded with the rod; (2) pouring out the high-strength bolt from a conical head or a circular hole of the sealing plate, sleeving the sleeve into the high-strength bolt, wherein the surface of the sleeve with the pin hole corresponds to the surface of the bolt rod with the deep hole when the sleeve is sleeved, so that the pin can be smoothly screwed into the sleeve and props up the pin rod into the deep hole when the bolt is screwed down; (3) aligning a high-strength bolt at the end part of the rod piece to a corresponding bolt ball screw hole, rotating a sleeve to drive the high-strength bolt to be screwed into a bolt ball, and in the process, the sleeve and the high-strength bolt transmit torque force through the contact of the inner wall of the sleeve and the outer wall of the non-circular section of the high-strength bolt; (4) when the sleeve is screwed to be tightly jacked by the bolt ball and the seal plate or the conical head, the pin is screwed into the pin hole of the sleeve until the head of the pin head tightly jacks the deep hole of the high-strength bolt.

The characteristics and the beneficial effect of this patent: when the node is installed, the sleeve and the high-strength bolt transmit torque force through the contact of the inner wall of the sleeve and the outer wall of the non-circular section of the high-strength bolt, a pin is not needed to drive the bolt to rotate, if the sleeve is tightly pressed by a bolt ball and a sealing plate or a conical head, the high-strength bolt is screwed, and the hidden danger of false screwing of the bolt is avoided.

Drawings

Fig. 1 is a three-dimensional schematic diagram of a node (embodiment one).

Fig. 2 is a sectional view of a node (embodiment one).

Detailed Description

The first implementation mode comprises the following steps:

fig. 1 is a three-dimensional schematic diagram of a node, and fig. 2 is a corresponding sectional view of the node, wherein the node comprises a bolt ball 1, rod pieces 2 and 3, a high-strength bolt 4, a conical head 5, a sealing plate 6, a sleeve 7, a pin 8 and baffle plates 9 and 10. The inner section of a sleeve 7 of the node is a regular octagon, and one surface of the sleeve is provided with a pin hole; the polished rod part with the non-circular section of the high-strength bolt 4 is also a regular octagonal section, and a deep hole corresponding to the position of a sleeve pin hole is formed in one surface of the polished rod part; the baffle has the same shape as the inner section of the rod piece, but has a slightly smaller size, and is hollowed in the middle, wherein the hollowed size is smaller than the diameter length of the bolt and the nut.

Construction and installation steps: (1) firstly, welding the baffle plates 9 and 10 in the rod piece 2 and the rod piece 3 respectively to ensure that the high-strength bolt 4 cannot slide into the rod piece 2 and the rod piece 3 in the subsequent installation process; (2) placing the high-strength bolt 4 into the rod piece 2 and the rod piece 3, welding the conical head 5 with the rod piece 2, and welding the sealing plate 6 with the rod piece 3; (3) pouring the high-strength bolt 4 out of the round holes of the conical head 5 and the sealing plate 6, sleeving the sleeve 7 into the high-strength bolt 4, and aligning the deep hole of the high-strength bolt 4 with the pin hole of the sleeve 7 when sleeving; (4) aligning the high-strength bolts 4 at the end parts of the rod pieces 2 and 3 with corresponding bolt ball 1 screw holes, rotating the sleeve 7 to drive the high-strength bolts 4 to be screwed into the bolt ball 1, and in the process, the sleeve 7 and the high-strength bolts 4 transmit torsion through the contact between the inner wall of the sleeve 7 and the outer wall of the regular octagonal section of the high-strength bolts 4; (5) when the sleeve 7 is screwed to be tightly pressed by the bolt ball 1 and the closing plate 6 or the conical head 5, the pin 8 is screwed into the pin hole of the sleeve 7 until the head of the pin tightly presses the deep hole of the high-strength bolt 4.

Claims (2)

1. The anti-slip connection node of the high-strength bolt with the noncircular section of the space grid structure is characterized by comprising a bolt ball, a conical head or a sealing plate, the high-strength bolt, a sleeve, a pin and a baffle, wherein a screw rod of the high-strength bolt is divided into a polished rod part with the noncircular section and a thread part along an axis; the section of the inner surface of the sleeve is matched with the non-circular section of the bolt polished rod part, but the size is slightly larger; the baffle is the same as the inner section of the rod piece in shape, but is slightly smaller in size, the middle of the baffle is hollowed, and the hollowed size is smaller than the diameter length of the high-strength bolt and the nut; the sleeve wall is provided with a pin hole matched with the pin; the high-strength bolt has a non-circular section polished rod with deep hole corresponding to the sleeve pin hole, and when the high-strength bolt is screwed into the bolt ball, the sleeve and the high-strength bolt rod contact with the inner wall of the sleeve and the outer wall of the non-circular section of the bolt to transfer torsion, and the pin is screwed into the pin hole of the sleeve until the head of the pin is tightly pressed against the deep hole of the bolt only when the sleeve is tightly pressed by the bolt ball, the sealing plate or the conical head.

2. The high-strength bolt anti-slip connection node with the non-circular section according to claim 1, characterized in that: the non-circular section of the high-strength bolt screw is in a regular octagon shape.

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