CN213626071U - Double-section high-strength bolt anti-loosening connecting node for space grid structure - Google Patents
Double-section high-strength bolt anti-loosening connecting node for space grid structure Download PDFInfo
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- CN213626071U CN213626071U CN202021912752.2U CN202021912752U CN213626071U CN 213626071 U CN213626071 U CN 213626071U CN 202021912752 U CN202021912752 U CN 202021912752U CN 213626071 U CN213626071 U CN 213626071U
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- 238000009434 installation Methods 0.000 abstract description 13
- 238000010276 construction Methods 0.000 abstract description 10
- 229910000831 Steel Inorganic materials 0.000 abstract description 2
- 230000000694 effects Effects 0.000 abstract description 2
- 239000010959 steel Substances 0.000 abstract description 2
- 238000007789 sealing Methods 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 238000011900 installation process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
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Abstract
A double-section high-strength bolt anti-loosening connecting joint for a space grid structure comprises a joint body, a double-section high-strength bolt, an inner nut, an outer nut, a anti-loosening gasket and a rod piece end connecting piece. The screw of the double-section high-strength bolt is divided into a large thread section and a small thread section; the inner nut, the outer nut and the large thread section of the double-section high-strength bolt are matched, and the bolt hole of the node body is matched with the small thread section of the double-section high-strength bolt; the anti-loosening gasket is composed of two identical gaskets, and two sides of each gasket are both in a sawtooth shape. The bolt is screwed into the node body by utilizing the locking effect of the bolt when the double nuts are mutually tightly propped, so that the construction and installation are convenient, and the construction quality is easy to ensure; the combination of the nut and the anti-loose washer can effectively resist the loosening of the node when vibration is caused by wind or earthquake, and the reliability of the node is high; when the node body is the bolt ball, the bolt ball body does not need to be cut, so that the diameter of the bolt ball is reduced, and the steel consumption is saved.
Description
Technical Field
This patent relates to spatial grid structure's connected node belongs to the building steel construction field.
Background
Spatial grid structures are widely used worldwide. The bolt connection node accords with the trend of building industrialization to easily guarantee construction quality, be one of space grid structure's main node form. The bolt connection node containing the sleeve commonly adopted by the existing space grid structure has the following defects: the installation is that the bolt is driven to be screwed into the node body through the pin on the sleeve, and due to the reasons of processing errors and the like, the pin can be sheared off due to larger shearing force, so that the high-strength bolt cannot be screwed, namely the phenomenon of false screwing occurs; the high-strength bolt is hidden in the sleeve, and whether the high-strength bolt is screwed up or not can not be visually judged after the high-strength bolt is installed; in the installation process, the pin head part needs to be screwed into the shallow groove on the high-strength bolt, and after the sleeve is rotated, the pin head part needs to be screwed into the deep groove on the high-strength bolt, so that the construction is complicated.
Disclosure of Invention
The purpose of this patent is in order to overcome prior art's not enough, provides a space grid structure is with two sections locking connected node of bolt that excels in.
The technical scheme of this patent is as follows:
a double-section high-strength bolt anti-loosening connecting joint for a space grid structure comprises a joint body, a double-section high-strength bolt, an inner nut, an outer nut, a anti-loosening gasket and a rod piece end connecting piece. The node body is provided with a plurality of bolt holes; a round hole capable of passing through the large thread section of the high-strength bolt is formed in the connecting piece at the end part of the rod piece; the screw of the double-section high-strength bolt is sequentially provided with a large thread section and a small thread section from the screw cap to the other end; the inner nut, the outer nut and the large thread section of the double-section high-strength bolt are matched, and the bolt hole of the node body is matched with the small thread section of the double-section high-strength bolt; 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; and the rod piece end connecting piece is welded with the spatial grid structure rod piece.
The thread directions of the large thread section and the small thread section of the double-section high-strength bolt are opposite.
The diameters of the round holes on the rod piece end connecting piece and the anti-loosening washer are 0.5-2 mm larger than the nominal diameter of the large thread section of the corresponding double-section high-strength bolt.
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 double-section high-strength bolt through the extrusion of the screw cap of the double-section high-strength bolt and the end connecting piece of the rod piece, and then is transmitted to the node body through the small thread section of the double-section high-strength bolt; when the rod piece is pressed, the pressure on the rod piece is transmitted to the double-section high-strength bolt through the extrusion of the inner nut and the connecting piece at the end part of the rod piece, and then the pressure is transmitted to the node body through the small thread section of the double-section high-strength bolt. The node has direct force transmission and obvious force transmission path.
The construction and installation method comprises the following steps:
(1) firstly, processing and manufacturing each part of a node and a spatial grid structure rod piece in a factory according to a design processing diagram;
(2) assembling in a factory: the screw rod of the double-section high-strength bolt penetrates through corresponding round holes of the connecting piece at the end part of the rod piece from the connecting side of the rod piece and then penetrates through the round holes of the anti-loosening washers, the large tooth surfaces of the two anti-loosening washers are opposite, then the inner nut and the outer nut are sequentially screwed into the large thread sections of the double-section high-strength bolt, the inner nut and the outer nut are rotated in opposite directions to be mutually propped, and at the moment, the two nuts and the bolt are in a locking state; welding the end connecting piece of the rod piece and the corresponding rod piece;
(3) and (3) engineering field installation: aligning the double-section high-strength bolt at the end part of the rod piece to the bolt hole of the corresponding node body, rotating the outer nut to drive the double-section high-strength bolt to rotate, and screwing the small thread section of the double-section high-strength bolt into the bolt hole until the transition part between the large thread section and the small thread section on the double-section high-strength bolt is contacted with and tightly propped against the node body; and then the outer nut is fixed by a spanner, the two nuts can be separated by rotating the inner nut, and the inner nut is continuously rotated until the inner nut is tightly propped against the anti-loose washer and the connecting piece at the end part of the rod piece, so that the construction and installation are completed.
The characteristics and the beneficial effect of this patent:
the node does not contain a sleeve and a pin in a traditional bolt ball node with a space grid structure, and the pin is not needed to drive the bolt to rotate during installation, so that the 'false screwing' hidden trouble of the bolt is avoided; when the double nuts are mutually propped tightly and the locking effect of the bolt is utilized to screw the bolt into the joint body, the joint connection can be realized only by using a spanner, when the installation is finished, only the inner nut and the connecting piece at the end part of the rod piece are required to be rotated for propping tightly, the outer nut is not required to be rotated, and the installation process and time are saved; the node does not contain a sleeve, the high-strength bolt is exposed, whether the high-strength bolt is screwed up can be judged visually only by observing whether the small thread section of the high-strength bolt is exposed, the construction quality is easy to guarantee, and the engineering supervision is convenient; the combination of the nut and the anti-loose washer can effectively resist the loosening of the node when vibration is caused by wind or earthquake, and the reliability of node connection is ensured; this node does not contain the sleeve, consequently when the node body is the bolt ball, the bolt ball spheroid need not the cutting, practices thrift processing cost and time, and more importantly, because the bolt ball need not the cutting, the bolt ball of minor diameter relatively can satisfy the bolt and do not collide the structure requirement in the spheroid, has just so reduced bolt ball weight to overall structure's economic nature is improved.
Description of the drawings:
FIGS. 1-5 are schematic views of a node installation procedure at a project site;
wherein 1 is a node body, 2 is a double-section high-strength bolt, 3 is an outer nut, 4 is an inner nut, 5 is a check washer, and 6 is a rod end connecting piece.
The specific implementation mode is as follows:
the first implementation mode comprises the following steps:
fig. 1 to 5 are schematic diagrams illustrating installation steps of a node in an engineering field, and as shown in the figures, the node comprises a node body 1, a double-section high-strength bolt 2, an outer nut 3, an inner nut 4, a lock washer 5 and a rod end connector 6, wherein the rod end connector 6 is a sealing plate, and the sealing plate is welded with a rod.
The construction and installation method comprises the following steps:
(1) firstly, processing and manufacturing each part of a node and a spatial grid structure rod piece in a factory according to a design processing diagram;
(2) assembling in a factory: the screw rod of the double-section high-strength bolt 2 penetrates through the corresponding round hole of the sealing plate 6 from the rod connecting side and then penetrates through the round holes of the anti-loosening washers 5, the large tooth surfaces of the two anti-loosening washers 5 are opposite, then the inner nut 4 and the outer nut 3 are sequentially screwed into the large thread section of the double-section high-strength bolt 2, the inner nut 4 and the outer nut 3 are rotated in opposite directions to be mutually abutted, and at the moment, the two nuts and the bolt 2 are in a locking state; welding the sealing plate 6 and the corresponding rod piece;
(3) and (3) engineering field installation: the on-site installation state is as shown in fig. 1, firstly, aligning a double-section high-strength bolt 2 at the end part of a rod piece with a bolt hole of a corresponding node body 1, rotating an outer nut 3 to drive the double-section high-strength bolt 2 to rotate, screwing a small thread section of the double-section high-strength bolt 2 into the bolt hole (as shown in fig. 2), and until a transition part between a large thread section and a small thread section on the double-section high-strength bolt 2 is contacted with and tightly propped against the node body 1 (as shown in fig. 3); then the outer nut 3 is fixed by a spanner, the two nuts can be separated by rotating the inner nut 4, the inner nut 4 is rotated continuously (as shown in figure 4) until the inner nut 4 is tightly pressed with the anti-loose washer 5 and the closing plate 6, and the construction installation is completed (as shown in figure 5).
Claims (3)
1. A double-section high-strength bolt anti-loosening connecting node for a space grid structure comprises a node body, a double-section high-strength bolt, an inner nut, an outer nut, a loosening-preventing washer and a rod piece end connecting piece; the node body is provided with a plurality of bolt holes; a round hole capable of passing through the large thread section of the high-strength bolt is formed in the connecting piece at the end part of the rod piece; the double-section high-strength bolt screw is sequentially provided with a large thread section and a small thread section from the screw cap to the other end; the inner nut, the outer nut and the large thread section of the double-section high-strength bolt are matched, and the bolt hole of the node body is matched with the small thread section of the double-section high-strength bolt; 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; and the rod piece end connecting piece is welded with the spatial grid structure rod piece.
2. The double-section high-strength bolt anti-loosening connecting node for the space grid structure according to claim 1, which is characterized in that: the thread directions of the large thread section and the small thread section of the double-section high-strength bolt are opposite.
3. The double-section high-strength bolt anti-loosening connecting node for the space grid structure according to claim 1, which is characterized in that: the diameters of the round holes on the rod piece end connecting piece and the anti-loosening washer are 0.5-2 mm larger than the nominal diameter of the large thread section of the corresponding double-section high-strength bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021912752.2U CN213626071U (en) | 2020-09-04 | 2020-09-04 | Double-section high-strength bolt anti-loosening connecting node for space grid structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021912752.2U CN213626071U (en) | 2020-09-04 | 2020-09-04 | Double-section high-strength bolt anti-loosening connecting node for space grid structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213626071U true CN213626071U (en) | 2021-07-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021912752.2U Expired - Fee Related CN213626071U (en) | 2020-09-04 | 2020-09-04 | Double-section high-strength bolt anti-loosening connecting node for space grid structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213626071U (en) |
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2020
- 2020-09-04 CN CN202021912752.2U patent/CN213626071U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210706 |