Connecting piece for steel structure and matched bolt and nut

Abstract

The utility model belongs to the technical field of steel structures, and relates to a steel knot connecting piece for steel structure building and a bolt and nut matched with the steel knot connecting piece, in particular to a connecting piece for a steel structure and a matched bolt and nut, the connecting piece is divided into a first connecting piece and a second connecting piece, and the first connecting piece and the second connecting piece are provided with corresponding mounting holes. The mounting holes are used for screwing bolts to fix the two connecting pieces, the surface where the mounting hole of the first connecting piece is located is a bolt mounting surface, the bolt mounting surface is provided with a sector ring structure which is a first sector ring, the angle of the first sector ring is smaller than 180 degrees, the first sector ring surrounds the mounting hole of the first connecting piece, and the angle of the first sector ring is smaller than 180 degrees. The two ends of the first sector ring are the starting end and the tail end, the starting end of the first sector ring is flush with the bolt installation face, the tail end of the first sector ring is lifted, and the first sector ring is gradually lifted from the starting end to the tail end to form a gradient. The device has the advantages of no falling, no potential safety hazard and very low cost.

Description

Technical Field

[0001] The utility model relates to the technical field of steel structures, specifically to connectors for steel structures and matching bolts and nuts. Background Art

[0002] Steel structure is a widely used structural form, not only used in buildings, but also widely present in various occasions, such as drilling platforms, tanks, ships, and railway tracks. During the construction of steel structures, the lapping of steel members is a basic construction step. In the prior art, bolts are generally used for lapping between steel members. There are through holes for installing bolts on the steel members, and then two steel members are lapped together through bolts and nuts. Such a bolt and nut lapping method is relatively reliable and strong, and has a low cost, so it is widely used in the connection of steel structure members. However, in some special scenarios, such as drilling platforms and railway tracks, a large amount of vibration will be generated due to oil well operations and the passing of trains. Over time, the vibration will cause the bolts and nuts to loosen and fall off, posing a safety hazard. Therefore, it is necessary to develop bolts and nuts that do not loosen.

[0003] The non-loosening bolts and nuts in the prior art are either made of special materials or have a precise and complex structure, and the costs are all relatively high. Summary of the Invention

[0004] The purpose of the utility model is to provide a connector for steel structures and matching bolts and nuts in view of the above-mentioned disadvantages.

[0005] The technical solution of the utility model is realized as follows: A connector for steel structures and matching bolts and nuts, the connector is divided into a first connector and a second connector. The first connector and the second connector have corresponding installation holes. The installation holes are holes for screwing in bolts to fix the two connectors. The surface where the installation hole of the first connector is located is the bolt installation surface. There is a fan-shaped ring structure on the bolt installation surface, which is the first fan-shaped ring. The angle of the first fan-shaped ring is less than 180 degrees. The first fan-shaped ring surrounds the installation hole of the first connector. The two ends of the first fan-shaped ring are the starting end and the ending end. The starting end of the first fan-shaped ring is flush with the bolt installation surface, and the ending end of the first fan-shaped ring rises. The first fan-shaped ring gradually rises from the starting end to the ending end, forming a slope;

[0006] The bolt is divided into a bolt head and a screw rod. There is a raised fan-shaped ring on the inner surface of the bolt head, which is the second fan-shaped ring. The angle of the second fan-shaped ring is less than 180 degrees. The second fan-shaped ring surrounds the screw rod. The second fan-shaped ring has a starting end and an ending end. The starting end of the second fan-shaped ring is flush with the inner surface of the bolt head, and the ending end of the second fan-shaped ring rises. The second fan-shaped ring gradually rises from the starting end to the ending end, forming a slope;

[0007] The surface where the mounting hole of the second connecting member is located is the nut mounting surface. There is an annular sector structure around the mounting hole of the nut mounting surface. This is the third annular sector. The third annular sector surrounds the mounting hole of the second connecting member, and the angle of the third annular sector is less than 180 degrees. The two ends of the third annular sector are the starting end and the ending end. The starting end of the third annular sector is flush with the bolt mounting surface, and the ending end of the third annular sector rises. The third annular sector rises gradually from the starting end to the ending end, forming a slope.

[0008] One side of the nut facing the nut mounting surface has a raised annular sector, which is the fourth annular sector. The angle of the fourth annular sector is less than 180 degrees. The fourth annular sector has a starting end and an ending end. The starting end of the fourth annular sector is flush with the inner surface of the nut, and the ending end of the fourth annular sector rises. The fourth annular sector rises gradually from the starting end to the ending end, forming a slope.

[0009] The rising directions of the first annular sector, the second annular sector, the third annular sector, and the fourth annular sector are the same, that is, the gradually rising directions of the first annular sector, the second annular sector, the third annular sector, and the fourth annular sector are all clockwise (or counterclockwise). During installation, the first annular sector and the second annular sector are correspondingly fitted, and the third annular sector and the fourth annular sector are correspondingly fitted.

[0010] Furthermore, the angles of the first annular sector, the second annular sector, the third annular sector, and the fourth annular sector are less than 2 degrees.

[0011] The beneficial effects of the present utility model are as follows: Such a connecting member for steel structures and bolts and nuts have the advantages of not falling off, not forming potential safety hazards, and having very low costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 is a disassembled schematic diagram of the connecting member for steel structures and the matching bolts and nuts;

[0013] Figure 2 is Figure 1 an enlarged schematic diagram at B of

[0014] Figure 3 is Figure 1 an enlarged schematic diagram at C of

[0015] Figure 4 is Figure 1 another perspective schematic diagram of

[0016] Figure 5 is Figure 4 an enlarged schematic diagram at A of

[0017] Figure 6 is Figure 4 an enlarged schematic diagram at D of

[0018] Figure 7It is an assembly schematic diagram of the connecting piece for steel structures and the matching bolts and nuts;

[0019] Figure 8 It is a perspective schematic diagram showing the first protrusion and the second protrusion (when the bolt is not tightened):

[0020] Figure 9 It is a perspective schematic diagram showing the first protrusion and the second protrusion (when the bolt is tightened).

[0021] In the figure: 1. First connecting piece; 2. Second connecting piece; 3. Mounting hole

[0022] 4. Bolt mounting surface; 5. First fan-shaped ring; 6. Starting end of the first fan-shaped ring; 7. End of the first fan-shaped ring; 8. Second fan-shaped ring; 9. Starting end of the second fan-shaped ring; 10. End of the second fan-shaped ring

[0023] 11. Nut mounting surface; 12. Third fan-shaped ring; 121. Starting end of the third fan-shaped ring; 122. End of the third fan-shaped ring; 13. Fourth fan-shaped ring; 131. Starting end of the fourth fan-shaped ring; 132. End of the fourth fan-shaped ring. Specific implementation mode

[0024] The technical solution of the present utility model will be further described below in conjunction with the embodiments.

[0025] As Figures 1-6 shown, a connecting piece for steel structures and the matching bolts and nuts include a connecting piece for steel structures and the matching bolts and nuts. The connecting piece is divided into a first connecting piece 1 and a second connecting piece 2. The first connecting piece and the second connecting piece have corresponding mounting holes 3. The mounting hole is a hole for screwing in a bolt to fix the two connecting pieces. The surface where the mounting hole of the first connecting piece is located is the bolt mounting surface 4. On the bolt mounting surface, there is a fan-shaped ring structure, which is the first fan-shaped ring 5. The angle of the first fan-shaped ring is less than 180 degrees. The first fan-shaped ring surrounds the mounting hole of the first connecting piece. The two ends of the first fan-shaped ring are the starting end and the ending end. The starting end 6 of the first fan-shaped ring is flush with the bolt mounting surface, and the ending end 7 of the first fan-shaped ring rises. The first fan-shaped ring gradually rises from the starting end to the ending end, forming a slope; as Figure 2 shown;

[0026] The bolt is divided into a bolt head and a screw rod. The inner surface of the bolt head (i.e., the side facing the bolt mounting surface) has a raised fan-shaped ring, which is the second fan-shaped ring 8. The angle of the second fan-shaped ring is less than 180 degrees. The second fan-shaped ring surrounds the screw rod. The second fan-shaped ring has a starting end and an ending end. The starting end 9 of the second fan-shaped ring is flush with the inner surface of the bolt head, and the ending end 10 of the second fan-shaped ring rises. The second fan-shaped ring gradually rises from the starting end to the ending end, forming a slope, as Figure 5 shown;

[0027] The surface where the mounting hole of the second connecting member is located is the nut mounting surface 11. There is an arcuate ring structure around the mounting hole of the nut mounting surface. This is the third arcuate ring 12. The third arcuate ring surrounds the mounting hole of the second connecting member. The angle of the third arcuate ring is less than 180 degrees. The two ends of the third arcuate ring are the starting end and the ending end. The starting end 121 of the third arcuate ring is flush with the bolt mounting surface, and the ending end 122 of the third arcuate ring rises. The third arcuate ring gradually rises from the starting end to the ending end, forming a slope, as Figure 6 shown;

[0028] One side of the nut facing the nut mounting surface 11 has a raised arcuate ring, which is the fourth arcuate ring 13. The angle of the fourth arcuate ring is less than 180 degrees. The fourth arcuate ring has a starting end and an ending end. The starting end 131 of the fourth arcuate ring is flush with the inner surface of the nut, and the ending end 132 of the fourth arcuate ring rises. The fourth arcuate ring gradually rises from the starting end to the ending end, forming a slope, as Figure 3 shown.

[0029] As Figure 2 , 3 , 5, and 6 show that the bulging directions of the first arcuate ring, the second arcuate ring, the third arcuate ring, and the fourth arcuate ring are the same, that is, the gradually bulging directions of the first arcuate ring, the second arcuate ring, the third arcuate ring, and the fourth arcuate ring are all clockwise (or counterclockwise). In this embodiment, it is clockwise.

[0030] During installation, the slopes of the first arcuate ring and the second arcuate ring correspond, and the slopes of the third arcuate ring and the fourth arcuate ring correspond.

[0031] The angles of the first arcuate ring, the second arcuate ring, the third arcuate ring, and the fourth arcuate ring are less than 2 degrees.

[0032] The principle of the connecting piece and bolt and nut for steel structures is as follows: The usage method of the connecting piece and bolt and nut for steel structures is the same as that of ordinary bolts and nuts, but it has the advantage of not loosening. The specific principle is as follows. Insert the bolt screw from the installation hole of the first connecting piece and screw on the nut at the other end of the screw. When tightening the bolt and nut, the slopes of the first fan ring and the second fan ring are in contact, and the slopes of the third fan ring and the fourth fan ring are in contact. Then continue to turn, and this process will be a bit strenuous but can be turned because the slope of the fan ring is less than 2 degrees. Until the end (highest end) of the first fan ring and the end (highest end) of the second fan ring are in contact, and the end (highest end) of the third fan ring and the end (highest end) of the fourth fan ring are in contact, at this time, the contact force between the inner surface of the bolt and the bolt installation surface is the largest, and the contact force between the nut installation surface and the inner surface of the nut is the largest. Then continue to turn, the end (highest end) of the first fan ring turns past the end (highest end) of the second fan ring, and the end (highest end) of the third fan ring turns past the end (highest end) of the fourth fan ring. At this time, the end (highest end) of the slopes of the first fan ring and the second fan ring is locked, and the end (highest end) of the slopes of the third fan ring and the fourth fan ring is locked, forming a loosening limit, which plays a role in preventing the bolt and nut from loosening.

[0033] For the convenience of understanding the principle of the present utility model, as shown in Figure 7 , 8 , and 9, it is an installation perspective schematic diagram of the connecting piece for steel structures of the present utility model and the supporting bolt and nut. The F direction in the figure is the screwing-in direction, that is, screwing along the F direction, the bolt enters the installation hole. It can be seen from the figure that starting from the position of Figure 8 and screwing the bolt clockwise until it is screwed into the position shown in Figure 9 , the second fan ring of the bolt is locked by the first fan ring of the bolt installation surface, and the bolt cannot be screwed back, and the bolt will not loosen and fall off due to vibration, increasing safety.

[0034] Furthermore, the angles of the first fan ring, the second fan ring, the third fan ring, and the fourth fan ring are less than 2 degrees.

[0035] The above is only a preferred embodiment of the present utility model and does not impose any form of limitation on the present utility model. Any person skilled in the art, without departing from the scope of the technical solution of the present utility model, may make some changes or modifications to the above-disclosed technical content to obtain equivalent embodiments with equivalent changes. However, as long as it does not depart from the content of the technical solution of the present utility model, any simple modification, equivalent change, and modification made to the above embodiments based on the technical essence of the present utility model still fall within the scope of the technical solution of the present utility model.

Claims

1. A connecting piece for steel structures and matching bolts and nuts, including a connecting piece for steel structures and matching bolts and nuts. The connecting piece is divided into a first connecting piece and a second connecting piece. The first connecting piece and the second connecting piece have corresponding mounting holes. The mounting holes are holes for screwing in bolts to fix the two connecting pieces. It is characterized in that: The surface where the mounting hole of the first connecting member is located is the bolt mounting surface. There is an arcuate ring structure on the bolt mounting surface, which is the first arcuate ring. The angle of the first arcuate ring is less than 180 degrees. The first arcuate ring surrounds the mounting hole of the first connecting member. The two ends of the first arcuate ring are the starting end and the ending end. The starting end of the first arcuate ring is flush with the bolt mounting surface, and the ending end of the first arcuate ring rises. The first arcuate ring gradually rises from the starting end to the ending end, forming a slope. The bolt is divided into a bolt head and a screw rod. There is a raised arcuate ring on the inner surface of the bolt head, which is the second arcuate ring. The angle of the second arcuate ring is less than 180 degrees. The second arcuate ring surrounds the screw rod. The second arcuate ring has a starting end and an ending end. The starting end of the second arcuate ring is flush with the inner surface of the bolt head, and the ending end of the second arcuate ring rises. The second arcuate ring gradually rises from the starting end to the ending end, forming a slope. The surface where the mounting hole of the second connecting member is located is the nut mounting surface. There is an arcuate ring structure around the mounting hole of the nut mounting surface, which is the third arcuate ring. The third arcuate ring surrounds the mounting hole of the second connecting member. The angle of the third arcuate ring is less than 180 degrees. The two ends of the third arcuate ring are the starting end and the ending end. The starting end of the third arcuate ring is flush with the bolt mounting surface, and the ending end of the third arcuate ring rises. The third arcuate ring gradually rises from the starting end to the ending end, forming a slope. One side of the nut facing the nut mounting surface has a raised arcuate ring, which is the fourth arcuate ring. The angle of the fourth arcuate ring is less than 180 degrees. The fourth arcuate ring has a starting end and an ending end. The starting end of the fourth arcuate ring is flush with the inner surface of the nut, and the ending end of the fourth arcuate ring rises. The fourth arcuate ring gradually rises from the starting end to the ending end, forming a slope. The rising directions of the first arcuate ring, the second arcuate ring, the third arcuate ring, and the fourth arcuate ring are the same. During installation, the first arcuate ring and the second arcuate ring are correspondingly fitted, and the third arcuate ring and the fourth arcuate ring are correspondingly fitted.

2. The steel structure connector and the supporting bolts and nuts according to claim 1 are characterized in that: The angles of the first arcuate ring, the second arcuate ring, the third arcuate ring, and the fourth arcuate ring are less than 2 degrees.

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