CN220980089U - Device for fastening or preventing loosening of bolt and nut - Google Patents
Device for fastening or preventing loosening of bolt and nut Download PDFInfo
- Publication number
- CN220980089U CN220980089U CN202323189235.3U CN202323189235U CN220980089U CN 220980089 U CN220980089 U CN 220980089U CN 202323189235 U CN202323189235 U CN 202323189235U CN 220980089 U CN220980089 U CN 220980089U
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- Prior art keywords
- bolt
- backing plate
- screw sleeve
- screw
- sleeve
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 56
- 239000010959 steel Substances 0.000 claims abstract description 56
- 238000012423 maintenance Methods 0.000 abstract description 6
- 238000010586 diagram Methods 0.000 description 5
- 238000010276 construction Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
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Abstract
The utility model discloses a device for fastening or preventing a bolt and a nut from loosening, which comprises a base plate, a first screw sleeve and a second screw sleeve, wherein a pair of through holes matched with a pair of through holes are formed in the base plate, and sleeve openings matched with the nuts are formed in the first screw sleeve and the second screw sleeve; the backing plate is positioned at one side of the positioning channel steel, and two through holes of the backing plate are aligned with the two through holes one by one to form a first channel and a second channel respectively; the first channel penetrates into the first bolt and is fastened by matching with the screw cap, the screw cap on the backing plate of the first bolt is sleeved with the first screw sleeve, the bottom of the first screw sleeve is abutted against the surface of the backing plate, the second channel penetrates into the second bolt and is fastened by matching with the screw cap, the screw cap on the backing plate of the second bolt is sleeved with the second screw sleeve, and the bottom of the second screw sleeve is abutted against the surface of the backing plate. The device is suitable for fastening bolts and nuts in a closed or semi-closed space state, can effectively reduce damage and maintenance cost caused by loosening the bolts, and improves the product quality of the steel structure.
Description
Technical Field
The utility model belongs to the field of steel structure construction, and particularly relates to a device for fastening or preventing a bolt and a nut from loosening under a closed or semi-closed space state of a steel structure.
Background
The bolts in the steel structure closed space or the semi-closed space are mainly used for connecting all nodes and play a certain stabilizing role, and after construction, the bolts are found to be difficult to overhaul in the closed space or the semi-closed space, the bolts and the nuts cannot be ensured not to be loosened after being fastened, the difficulty is increased for subsequent construction and maintenance, and the working efficiency is reduced.
Disclosure of utility model
To overcome the disadvantages of the prior art, it is an object of the present utility model to provide a device for tightening or preventing loosening of a bolt and nut.
The utility model is realized in such a way that the device for fastening or preventing the loosening of the bolt and the nut is arranged on a workpiece, the workpiece comprises a positioning channel steel, a pair of through holes are arranged on the positioning channel steel, a first bolt and a second bolt are inserted into each through hole, and the two threaded ends of the first bolt and the second bolt are used for screwing in the nut; the first bolt and the second bolt are matched with nuts to be installed on the spliced channel steel, the device comprises a base plate, a first screw sleeve and a second screw sleeve, a pair of through holes matched with the pair of through holes are formed in the base plate, and sleeve openings matched with the nuts are formed in the first screw sleeve and the second screw sleeve; the backing plate is positioned on one side of the positioning channel steel, and two through holes of the backing plate are aligned with the two through holes one by one to form a first channel and a second channel respectively; the first channel penetrates into the first bolt and is fastened by matching with the screw cap, the screw cap on the backing plate of the first bolt is sleeved with the first screw sleeve, the bottom of the first screw sleeve is abutted against the surface of the backing plate, the second channel penetrates into the second bolt and is fastened by matching with the screw cap, the screw cap on the backing plate of the second bolt is sleeved with the second screw sleeve, and the bottom of the second screw sleeve is abutted against the surface of the backing plate.
Preferably, the nut is a hexagonal nut, and the threaded sleeve is provided with a hexagonal socket matched with the nut.
Compared with the defects and shortcomings of the prior art, the utility model has the following beneficial effects:
(1) According to the utility model, the independent gaskets under two adjacent nuts in the prior art are replaced by the integrated backing plate, so that the backing plate has better stability, and through the mutual matching between the first screw sleeve, the second screw sleeve and the backing plate, the loosening of bolts and nuts can be effectively prevented, the loosening and abrasion of the bolt connection can be reduced, the service lives of the bolts and the nuts are prolonged, the maintenance and replacement frequency is reduced, the safety of the structure is improved, and the occurrence of accidents is reduced;
(2) The device is suitable for fastening bolts and nuts in a closed or semi-closed space state, can effectively reduce damage and maintenance cost caused by loosening the bolts, and improves the product quality of the steel structure.
Drawings
FIG. 1 is a schematic view of the structure of the device of the present utility model after assembly in a steel structure;
FIG. 2 is a schematic diagram of an assembled structure of the device of the present utility model with a first bolt, a second bolt, and a nut;
FIG. 3 is a top view of FIG. 2;
Fig. 4 is a force analysis diagram of the first and second threaded sleeves in fig. 3.
Detailed Description
The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.
Fig. 1 to 4 show, wherein fig. 1 is a schematic structural diagram of the device of the present utility model after being assembled in a steel structure; FIG. 2 is a schematic diagram of an assembled structure of the device of the present utility model with a first bolt, a second bolt, and a nut; FIG. 3 is a top view of FIG. 2; fig. 4 is a force analysis diagram of the first and second threaded sleeves in fig. 3.
The embodiment of the utility model discloses a device for fastening or preventing a bolt and a nut from loosening, which is arranged on a workpiece, wherein the workpiece comprises a positioning channel steel 1, a pair of through holes are formed in the positioning channel steel 1, a first bolt 3 and a second bolt 4 are inserted into each through hole, and two threaded ends of the first bolt 3 and the second bolt 4 are used for being screwed into nuts 8; the first bolt 3 and the second bolt 4 are arranged on the spliced channel steel in cooperation with a screw cap 8, the device comprises a base plate 5, a first screw sleeve 6 and a second screw sleeve 7, a pair of through holes matched with the pair of through holes are formed in the base plate 5, and the first screw sleeve 6 and the second screw sleeve 7 are respectively provided with a sleeve opening matched with the screw cap 8; the backing plate 5 is positioned on one side of the positioning channel steel 1, and two through holes of the backing plate 5 are aligned with the two through holes one by one to form a first channel and a second channel respectively; the first channel penetrates into the first bolt 3 and is fastened by matching with the screw cap 8, the screw cap 8 on the backing plate 5 of the first bolt 3 is sleeved with the first screw sleeve 6, the bottom of the first screw sleeve 6 is abutted against the surface of the backing plate 5, the second channel penetrates into the second bolt 4 and is fastened by matching with the screw cap 8, the screw cap 8 on the backing plate 5 of the second bolt 4 is sleeved with the second screw sleeve 7, and the bottom of the second screw sleeve 7 is abutted against the surface of the backing plate 5.
In the embodiment of the utility model, the device can be arranged on one side of the positioning channel steel 1, and the device can be respectively arranged on two sides of the positioning channel steel 1; it is also easily understood that the positioning channel 1 may be replaced by other plate structures. It will be readily appreciated that the positioning channel 1 can be mounted and secured to other members 9 by the first bolt 3, the second bolt 4, the nut 8 and the device of the present utility model described above.
In the embodiment of the utility model, the workpiece is a steel structure with a closed or semi-closed space, wherein the steel structure comprises a positioning channel steel 1 and a spliced channel steel 2, a pair of through holes are formed in the positioning channel steel 1, a first bolt 3 and a second bolt 4 are inserted into each through hole, and two threaded ends of the first bolt 3 and the second bolt 4 are used for being screwed into nuts 8; after the first bolt 3 and the second bolt 4 are fastened on the spliced channel steel 2 by matching with the nuts 8, the positioning channel steel 1 and the spliced channel steel 2 are spliced into the steel structure in a way of opposite notches, and the area between the positioning channel steel 1 and the spliced channel steel 2 is the closed or semi-closed space; the device comprises a backing plate 5, a first threaded sleeve 6 and a second threaded sleeve 7, wherein a pair of through holes matched with the pair of through holes are formed in the backing plate 5, and sleeve openings matched with a screw cap 8 are formed in the first threaded sleeve 6 and the second threaded sleeve 7; the backing plate 5 is positioned in a groove of the positioning channel steel 1, and two through holes of the backing plate 5 are aligned with two through holes one by one to form a first channel and a second channel respectively; a first bolt 3 penetrates into the first channel, two threaded ends of the first bolt 3 are fastened on the positioning channel steel 1 in a matched manner, a first screw sleeve 6 is sleeved on a nut 8 positioned in a groove of the positioning channel steel 1 on the first bolt 3, and the bottom of the first screw sleeve 6 is abutted against the surface of the backing plate 5; the second channel is internally penetrated with a second bolt 4, two threaded ends of the second bolt 4 are fastened on the positioning channel steel 1 by matching nuts, a second screw sleeve 7 is sleeved on a nut 8 positioned in a groove of the positioning channel steel 1 on the second bolt 4, and the bottom of the second screw sleeve 7 is attached to the surface of the backing plate 5.
In the embodiment of the utility model, the backing plate 5 is selected to be a 6mm thick steel plate, and the length and the thickness of the backing plate can be processed according to the actual length in the construction process; in addition, the first thread insert 6 and the second thread insert 7 are selected to be 8mm in height, the outline of the internal sleeve opening is polygonal, the shape and the outer diameter of the matched nut 8 are specifically machined and referred, in the embodiment of the utility model, the nut 8 is preferably a hexagonal nut, and correspondingly, a hexagonal sleeve opening matched with the nut 8 is arranged on the thread insert.
In the embodiment of the utility model, the positioning channel steel 1 and the spliced channel steel 2 are common channel steel or C-shaped channel steel in the field, and the notches of the positioning channel steel 1 and the spliced channel steel 2 are opposite and spliced to form a closed or semi-closed space. The device of the utility model needs to complete installation before the positioning channel steel 1 and the splicing channel steel 2 are spliced, and the device of the utility model needs to ensure the stability of the installation process of bolts and nuts and the stability between the bolts and the nuts after the positioning channel steel 1 and the splicing channel steel 2 are spliced.
It should be clear that, in the embodiment of the present utility model, the above description is only a structural description of the device after the first bolt 3, the second bolt 4, the nut 8 and the steel structure are assembled, and in practical application, in order to make the device perform its function, a specific assembly sequence is needed in the assembly process to better achieve the technical purpose of the present utility model. Specifically, the first channel penetrates into the first bolt 3 and is fastened by matching with the screw cap 8, the screw cap 8 positioned in the groove of the positioning channel steel 1 on the first bolt 3 is sleeved with the first screw sleeve 6, the bottom of the first screw sleeve 6 is abutted against the surface of the backing plate 5, the second channel penetrates into the second bolt 4 and is fastened by matching with the screw cap 8, the screw cap 8 positioned in the groove of the positioning channel steel 1 on the second bolt 4 is sleeved with the second screw sleeve 7, and the bottom of the second screw sleeve 7 is abutted against the surface of the backing plate 5.
In the assembly process, the conventional steel backing plate is respectively arranged in each bolt and nut fastening structure, unlike the conventional steel backing plate, as shown in fig. 4, the backing plate 5 of the utility model is a whole, and can enable the first bolt 3 and the second bolt 4 to be positioned on the same plane, the plane is a whole, the first screw sleeve 6 is tightly sleeved on the nut 8 and is abutted against the backing plate 5, the first screw sleeve 6 and the backing plate 5 are in a static stress state and generate certain torsion resistance force F 1, and then the second bolt 4 and the nut 8 are installed and fastened, because the first screw sleeve 6 and the second screw sleeve 7 are separate individuals, when the second bolt 4 and the nut 8 are installed, the stress of the first bolt 3 and the nut 8 is not influenced, and opposite torsion force F 2 is generated. Therefore, the device can well play a role in fastening the first bolt 3, the second bolt 4 and the nut 8.
After the assembly is completed, the first screw sleeve 6 and the second screw sleeve 7 are positioned on the same stress surface (the base plate 5), so that the first screw sleeve 6 and the second screw sleeve 7 are not influenced by each other under the condition of no external force influence, and are simultaneously supported by the upward supporting force of the base plate 5, the stability of the traditional steel base plate acting on the bolt is better, and the good effect of preventing the loosening of the bolt and the nut under the state of a closed or semi-closed space is realized through the mutual cooperation between the first screw sleeve 6, the second screw sleeve 7 and the base plate 5.
According to the device, the independent gaskets under two adjacent nuts in the prior art are replaced by the integrated backing plate 5, so that the device has better stability, and through the mutual matching between the first threaded sleeve 6, the second threaded sleeve 7 and the backing plate 5, the loosening of bolts and nuts can be effectively prevented, the loosening and abrasion of the connection of the bolts can be reduced, the service lives of the bolts and the nuts are prolonged, the maintenance and replacement frequency is reduced, the safety of the structure is improved, and accidents are reduced; in addition, the device is suitable for fastening bolts and nuts in a closed or semi-closed space state, can effectively reduce damage and maintenance cost caused by loosening of the bolts, and improves the product quality of the steel structure.
The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.
Claims (2)
1. The device is arranged on a workpiece, the workpiece comprises a positioning channel steel, a pair of through holes are formed in the positioning channel steel, a first bolt and a second bolt are inserted into each through hole, and two threaded ends of the first bolt and the second bolt are used for being screwed into nuts; the first bolt and the second bolt are matched with nuts to be installed on the spliced channel steel, and the device is characterized by comprising a base plate, a first screw sleeve and a second screw sleeve, wherein a pair of through holes matched with the pair of through holes are formed in the base plate, and the first screw sleeve and the second screw sleeve are respectively provided with a sleeve opening matched with the nuts; the backing plate is positioned on one side of the positioning channel steel, and two through holes of the backing plate are aligned with the two through holes one by one to form a first channel and a second channel respectively; the first channel penetrates into the first bolt and is fastened by matching with the screw cap, the screw cap on the backing plate of the first bolt is sleeved with the first screw sleeve, the bottom of the first screw sleeve is abutted against the surface of the backing plate, the second channel penetrates into the second bolt and is fastened by matching with the screw cap, the screw cap on the backing plate of the second bolt is sleeved with the second screw sleeve, and the bottom of the second screw sleeve is abutted against the surface of the backing plate.
2. The device of claim 1, wherein the nut is a hex nut and the sleeve has a hex socket adapted to mate with the nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323189235.3U CN220980089U (en) | 2023-11-26 | 2023-11-26 | Device for fastening or preventing loosening of bolt and nut |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323189235.3U CN220980089U (en) | 2023-11-26 | 2023-11-26 | Device for fastening or preventing loosening of bolt and nut |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220980089U true CN220980089U (en) | 2024-05-17 |
Family
ID=91065807
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202323189235.3U Active CN220980089U (en) | 2023-11-26 | 2023-11-26 | Device for fastening or preventing loosening of bolt and nut |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220980089U (en) |
-
2023
- 2023-11-26 CN CN202323189235.3U patent/CN220980089U/en active Active
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