CN215926267U

CN215926267U - Split type bolted connection node is used to rectangular pipe individual layer net shell

Info

Publication number: CN215926267U
Application number: CN202121341860.3U
Authority: CN
Inventors: 杨大彬; 孙毅; 吴金志
Original assignee: Shandong Jianzhu University
Current assignee: Shandong Jianzhu University
Priority date: 2021-06-17
Filing date: 2021-06-17
Publication date: 2022-03-01
Anticipated expiration: 2031-06-17

Abstract

The utility model provides a rectangular pipe individual layer is split type bolted connection node for latticed shell, adopts split type node body to connect the rectangular pipe member, has reduced the less part of atress in the node body in comparing in the integral type node body, has alleviateed the dead weight of structure. It is divided into two component forms: the first form is a split type bolt connection node without a check washer for a rectangular pipe single-layer latticed shell, and the split type bolt connection node comprises a split type node body, a double-section high-strength bolt, a thick nut, a thin nut and an end plate. In practical application, the self-locking property of the double nuts is utilized to avoid the looseness of bolt connection; the second form is a split bolt connection node containing a check washer for the rectangular pipe single-layer latticed shell, the check washer is additionally arranged between the thick nut and the thin nut on the basis of the first form, the self-locking performance between the thin nut and the thick nut is enhanced, the thin nut and the thick nut are not prone to relative rotation, and the check performance of the node under the complex stress condition is further enhanced.

Description

Split type bolted connection node is used to rectangular pipe individual layer net shell

Technical Field

This patent relates to spatial grid structure's connected node belongs to the building steel construction field.

Background

The single-layer latticed shell structure has an elegant architectural shape and can span a large span, and is more and more widely applied to practical engineering. The bolt connection node meets the requirements of building industrialization and is easy to ensure construction quality, and is one of main node forms of a single-layer latticed shell structure. With the progress and development of the technology, the single-layer latticed shell structure adopting the rectangular pipe rod piece is more and more widely applied due to the attractiveness and reasonable stress. The existing node forms for connecting the rectangular pipes are mainly two, namely an integrated node and a split node. And the single-layer latticed shell structure adopting the two node forms has the advantages that when vibration is generated due to the influence of the external natural environment, the bolt connection is easy to loosen, so that the force transmission path of the bolt is ineffective, and potential safety hazards are caused. The single-layer latticed shell structure connected by the integrated nodes has the problem that the stress of the node bodies is unreasonable, the materials of the node bodies cannot be fully utilized, the self weight of the structure is increased, and meanwhile, the economic cost is increased.

Disclosure of Invention

The purpose of this patent is in order to overcome prior art's not enough, has proposed a rectangular pipe individual layer split type bolted connection node for latticed shell. The split type bolt connection joint comprises two forms, namely a split type bolt connection joint without a check washer for a rectangular pipe single-layer latticed shell; and the second form is a split type bolt connection node containing a check washer for the rectangular pipe single-layer latticed shell.

The first technical scheme of this patent is as follows:

the utility model provides a rectangular pipe individual layer latticed shell is with split type bolted connection node of no lock washer, includes split type node body, two sections high strength bolts, thick nut, thin nut, end plate. The split type node body consists of an upper node body and a lower node body, the upper surface and the lower surface of the two node bodies are planes, screw holes are formed in the side surfaces of the node bodies, and the size of each screw hole is matched with the small thread section of the high-strength bolt; the high-strength bolt is sequentially provided with a smooth circular section, a large thread section and a small thread section from one end of the nut to the other end, and the length of the smooth circular section is smaller than the thickness of the end plate; the thick nut and the thin nut are matched with the large thread section of the high-strength bolt; the end plate is provided with an upper round hole and a lower round hole which correspond to the positions of the screw holes of the node body, and the end plate is welded with the rectangular pipe rod piece.

The diameter of the round hole of the end plate is 0.5-2mm larger than the nominal diameter of the large thread section of the high-strength bolt.

The second technical scheme of this patent is as follows:

the utility model provides a rectangular pipe individual layer net shell is with split type bolted connection node that contains packing ring, includes split type node body, two sections high strength bolt, thick nut, lock washer, thin nut, end plate. The split type node body, the high-strength bolt, the thick nut, the thin nut and the end plate are the same as those in the first technical scheme, and the anti-loose washer is only added on the basis of the first technical scheme. The anti-loosening washer consists of two identical washers, a round hole is formed in the middle of each washer, two surfaces of each washer are provided with different sawteeth, one surface of each washer is a cam-shaped large tooth, the slope angle of each washer is larger than that of a thread of a large thread section of the high-strength bolt, and the other surface of each washer is a dense small tooth; the end plate is welded with the rectangular pipe rod piece.

The force transmission mechanism is as follows: when the rod piece is pulled, the pulling force acting on the rod piece is transmitted to the upper bolt and the lower bolt through the extrusion of the screw cap of the high-strength bolt and the end plate, and then is transmitted to the split type node body through the threaded section of the high-strength bolt; when the rod piece is pressed, the pressure acting on the rod piece is transmitted to the upper bolt and the lower bolt through the extrusion of the end plate and the nut, and then the pressure is transmitted to the split type node body through the thread section of the high-strength bolt. The node has direct force transmission and obvious force transmission path.

The characteristics and the beneficial effect of this patent:

because this node has adopted split type node body to connect the rectangular pipe member, has reduced the less part of atress in the node body compared in the integral type node body, has alleviateed the dead weight of structure, has reduced economic cost. Meanwhile, in the first technical scheme, the looseness of bolt connection is effectively avoided by utilizing the self-locking property of double nuts; the two technical schemes are further optimized, the anti-loose washer is additionally arranged between the thin nut and the thick nut, the self-locking performance between the thin nut and the thick nut is enhanced, the thin nut and the thick nut are not easy to rotate relatively, and the anti-loose performance of the node under the condition of complex stress is further enhanced.

Drawings

FIG. 1 is an exploded view of a split bolt connection joint for a single-layer latticed shell of a rectangular pipe without a check washer;

FIG. 2 is a schematic view of the assembly of a split bolt connection node without a lock washer for a single-layer latticed shell of a rectangular pipe and a single rod;

FIG. 3 is a schematic view of the split bolt connection node and multi-rod assembly without a lock washer for a single-layer latticed shell of a rectangular pipe.

FIG. 4 is an exploded view of a split bolt connection joint containing a lock washer for a single-layer latticed shell of a rectangular pipe;

FIG. 5 is a schematic view of the assembly of a split bolt connection node containing a lock washer and a single rod for a single-layer latticed shell of a rectangular pipe;

FIG. 6 is a schematic view of the assembly of a split bolt connection node containing a lock washer and a multi-rod for a single-layer latticed shell of a rectangular pipe;

wherein 1 is the split type node body, 2 is two sections high strength bolts, 3 are thick nuts, 4 are thin nuts, 5 are the end plate, 6 are the rectangular pipe, 7 are lock washer.

Detailed Description

The first implementation mode comprises the following steps:

as shown in figures 1-3, the split bolt connection node without the anti-loose washer for the single-layer latticed shell of the rectangular pipe comprises: the split type node body 1, two sections high strength bolt 2, thick nut 3, thin nut 4, end plate 5. The split type node body 1 consists of an upper node body and a lower node body, the upper surface and the lower surface of the two node bodies are planes, and the side surface of the node body is provided with a screw hole matched with the small thread section of the double-section high-strength bolt 2; the double-section high-strength bolt 2 is provided with a nut, a smooth circular section, a large thread section and a small thread section from the nut to the other end in sequence; the thin nut 4 and the thick nut 3 are matched with the large thread section of the double-section high-strength bolt 2; the end plate 5 is provided with an upper round hole and a lower round hole, the positions of the upper round hole and the lower round hole correspond to the positions of screw holes on the split type node body 1, and the diameters of the round holes are slightly larger than the nominal diameter of the large thread section of the double-section high-strength bolt 2; the end plate 5 is welded with a rectangular tube rod 6.

The construction and installation method comprises the following steps:

1. firstly, penetrating a double-section high-strength bolt 2 into a round hole of an end plate 5, and then sequentially screwing a thin nut 4 and a thick nut 3 into a large thread section of the double-section high-strength bolt to prevent the double-section high-strength bolt 2 from falling into a rectangular pipe rod piece 6; then welding the end plate 5 with the rectangular pipe rod piece 6;

2. the thin nut 4 is rotated anticlockwise, the thick nut 3 is rotated clockwise, and the thin nut 4 and the thick nut 3 are screwed until the thin nut and the thick nut are in a clamping self-locking state;

3. aligning the double-section high-strength bolt 2 with a corresponding screw hole of the split type node body 1, and clockwise rotating the thick nut 3 to drive the small thread section of the high-strength bolt to be screwed into the split type node body 1 until the small thread section of the double-section high-strength bolt 2 completely enters the node body;

4. rotating the thin nut 4 clockwise until the thin nut 4 and the end plate 5 are in a clamping state and reach a specified torque value; then, the thick nut 3 is rotated clockwise until the thick nut 3 and the thin nut 4 are clamped and reach a specified torque value.

The second embodiment:

as shown in FIGS. 4 to 6, the split bolt connection node containing the anti-loose washer for the single-layer latticed shell of the rectangular pipe comprises: the split type node body 1, two sections high strength bolt 2, thick nut 3, thin nut 4, end plate 5, lock washer 7. The split type node body 1, the double-section high-strength bolt 2, the thick nut 3, the thin nut 4 and the end plate 5 are the same as those in the first embodiment; only the lock washer 7 is added on the basis of the first embodiment; the anti-loosening washer 7 consists of two identical washers, a round hole is formed in the middle of each washer, two surfaces of each washer are provided with different sawteeth, one surface of each washer is a cam-shaped large tooth, the slope angle of each washer is larger than that of a thread of a large thread section of the high-strength bolt, and the other surface of each washer is a dense small tooth; the end plate 5 is welded with a rectangular tube rod 6.

The construction and installation method comprises the following steps:

1. firstly, penetrating a double-section high-strength bolt 2 into a round hole of an end plate 5, and then sequentially screwing a thin nut 4, a locking washer 7 and a thick nut 3 on a large thread section of the double-section high-strength bolt to prevent the double-section high-strength bolt 2 from falling into a rectangular pipe rod piece 6; then welding the end plate 5 with the rectangular pipe rod piece 6;

2. the thin nut 4 is rotated anticlockwise, the thick nut 3 is rotated clockwise, and the thin nut 4, the anti-loose washer 7 and the thick nut 3 are screwed until the thin nut, the anti-loose washer 7 and the thick nut are in a clamping self-locking state;

4. rotating the thin nut 4 clockwise until the thin nut 4 and the end plate 5 are in a clamping state and reach a specified torque value; then, the thick nut 3 is rotated clockwise until the thick nut 3, the lock washer 7 and the thin nut 4 are clamped and reach the specified torque value.

Claims

1. A split type bolt connecting node for a rectangular pipe single-layer latticed shell is in the form of a split type bolt connecting node without a check washer for the rectangular pipe single-layer latticed shell, and comprises a split type node body, a double-section high-strength bolt, a thick nut, a thin nut and an end plate; the split type node body is characterized by comprising an upper node body and a lower node body, wherein the upper surface and the lower surface of the two node bodies are planes, screw holes are formed in the side surfaces of the node bodies, and the size of each screw hole is matched with the small thread section of a high-strength bolt; the high-strength bolt is sequentially provided with a smooth circular section, a large thread section and a small thread section from one end of the nut to the other end, and the length of the smooth circular section is smaller than the thickness of the end plate; the thick nut and the thin nut are matched with the large thread section of the high-strength bolt; the end plate is provided with an upper round hole and a lower round hole which correspond to the positions of the screw holes of the node body, and the end plate is welded with the rectangular pipe rod piece.

2. The split type bolt connection joint for the single-layer latticed shell of the rectangular pipe according to claim 1, is characterized in that: the diameter of the round hole of the end plate is 0.5-2mm larger than the nominal diameter of the large thread section of the high-strength bolt.

3. The split bolt connection joint for the single-layer latticed shell of the rectangular pipe according to claim 1 or 2, characterized in that: the anti-loosening device is characterized by further comprising an anti-loosening gasket, wherein the anti-loosening gasket is composed of two identical gaskets, a round hole is formed in the middle of each gasket, two surfaces of each gasket are provided with different sawteeth, one surface of each gasket is provided with a cam-shaped large tooth, the slope angle of each gasket is larger than that of a thread of a large thread section of the high-strength bolt, and the other surface of each gasket is provided with a dense small tooth.