A high strength bolt

Abstract

The utility model belongs to the technical field of bolts, and particularly relates to a high-strength bolt; comprising a screw and a bolt head, a reinforcing connecting plate, which is arranged between the screw and the bolt head, and has a plurality of reinforcing connecting plates, which are symmetrically distributed; a washer, which is arranged on the screw and located at the lower end of the bolt head; a slide groove, which is consistent with the number of the reinforcing connecting plates and corresponds one to one, is provided on the washer, and the washer passes through the reinforcing connecting plate under the action of the slide groove. The utility model provides a high-strength bolt whose reinforcing side will not affect the close fixation of the washer and the bolt head.

Description

Technical Field

[0001] The utility model belongs to the technical field of bolts, and particularly relates to a high-strength bolt. Background Art

[0002] Hexagonal torsion shear type high-strength bolt connection pair is the most commonly used fastener in modern steel structure engineering. The size of the tightening axial force is an important indicator of the tightening performance of the torsion shear type high-strength bolt connection pair. The tightening axial force of the torsion shear type high-strength bolt connection pair is achieved by applying torque to the nut while fixing the plum head at the end of the screw to fix the bolt rod until the plum head at the end is twisted off.

[0003] During the use of traditional bolts, the connection strength between the bolt head and the screw is poor. Therefore, when the side of the bolt head is hit, the bolt head is easily broken and separated from the screw, which ultimately reduces the practicality of the bolt. Therefore, a high-strength bolt structure is required.

[0004] The publication number is CN213270656U, which discloses a new type of high-strength bolt, which relates to the field of bolts, including a bolt head, a screw rod and a reinforced side edge are arranged on the outer surface of one end of the bolt head, the reinforced side edges are all located around the screw rod, a gasket and a nut are arranged on the outer wall of the screw rod, the gasket is located above the nut, a fixed thread is arranged between the screw rod and the nut, and a threaded rubber ring is arranged in the middle of the nut. The utility model is beneficial to increase the use strength between the bolt head and the screw rod by setting the reinforced side edge when in use, and the bolt head and the screw rod are more stable when in use, which is beneficial to extend the service life of the bolt. Although this technology increases the use strength between the bolt head and the screw rod, making the bolt head and the screw rod more stable, this technology, due to the reinforced side edge, causes the gasket to be unable to fit tightly with the bolt head, and the bolt is prone to loosening or even falling off, affecting the stability of the bolt construction. Utility Model Content

[0005] The utility model aims to solve the above-mentioned technical problems and provide a high-strength bolt whose reinforced side will not affect the close fixation between the washer and the bolt head.

[0006] In view of this, the utility model provides a high-strength bolt, including a screw rod and a bolt head, characterized in that:

[0007] A reinforcing connecting plate is arranged between the screw rod and the bolt head, and there are a plurality of reinforcing connecting plates which are symmetrically distributed;

[0008] A washer is arranged on the screw rod and is located at the lower end of the bolt head;

[0009] The number of the slide grooves is consistent with that of the reinforcing connecting plates and they correspond one to one. The slide grooves are arranged on the washers, and the washers pass through the reinforcing connecting plates under the action of the slide grooves.

[0010] In the above technical solution, further, a plum blossom head is provided at the lower end of the screw.

[0011] In any of the above technical solutions, further, a hexagonal unlocking groove is provided on the bolt head, and the hexagonal unlocking groove and the bolt head are integrated into one design.

[0012] In any of the above technical solutions, further, a protective component is provided on the bolt head for preventing the hexagonal unlocking groove from being exposed to humid air.

[0013] In any of the above technical solutions, further, the protection component includes:

[0014] There are six guide grooves, symmetrically arranged on the outside of the bolt head;

[0015] A cap, which is sleeved on the outside of the bolt head;

[0016] The number of the protrusions is consistent with that of the guide grooves and they correspond one to one. The protrusions are arranged inside the cap, and the protrusions are embedded in the guide grooves and are slidably connected with the guide grooves.

[0017] In any of the above technical solutions, further, a removal component is included, and the removal component includes:

[0018] A cavity is provided inside the screw and passes through the upper end of the screw;

[0019] A hexagonal rotating rod is embedded in the cavity, the hexagonal rotating rod passes through the bolt head and is connected with the inner hexagonal unlocking groove;

[0020] The hexagonal slot is provided inside the hexagonal rotating rod.

[0021] The beneficial effects of the utility model are:

[0022] 1. The connection stability is enhanced by multiple symmetrically distributed reinforcing connecting plates, and the connection strength of the screw and bolt head structure is strengthened, so that the screw and bolt head are not easy to break. The washer is provided with a slide groove, which enables the washer to adjust its position by sliding to adapt to different stress conditions and avoid loosening, thereby improving the adaptability and stability of the bolt;

[0023] 2. Tighten the bolts through reaction force. When the torque reaches the specified requirement, the plum head will break off. The breaking of the plum head indicates that the applied torque reaches the qualified quality standard and the bolts have been tightened, thus ensuring the performance and effectively maintaining the stability of the connection. It is not easy to loosen during long-term use and has good anti-seismic performance.

[0024] 3. The hexagonal unlocking slot makes it easy for users to remove and install high-strength bolts. When installing or removing bolts, specific tools are used, making it impossible to remove them without special disassembly devices, thereby achieving an anti-theft effect;

[0025] 4. When the cap and the bump on the bolt head are combined with the guide groove, the cap completely covers the hexagonal unlocking groove, thereby preventing direct contact with moist air, thereby effectively protecting the hexagonal unlocking groove from the external environment, extending the service life of the bolt, and improving its reliability and durability;

[0026] 5. Use a specific tool to insert it into the hexagonal slot, and turn the specific tool to rotate the hexagonal rod. During the rotation of the hexagonal rod, the screw is squeezed to loosen the screw, and the screw falls off the steel structure. In this way, the screw broken in the steel structure can be smoothly removed, which is convenient for construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0028] Figure 2 It is a schematic diagram of a partial three-dimensional structure of the utility model;

[0029] Figure 3 It is a usage state diagram of the utility model;

[0030] Figure 4 It is an exploded view of the utility model;

[0031] Figure 5 It is a three-dimensional structural schematic diagram of the protective component of the utility model;

[0032] Figure 6 It is a cross-sectional view of the utility model;

[0033] Figure 7 It is a cross-sectional view of the removal component of the utility model;

[0034] The reference numerals in the figure are: 1. screw; 2. bolt head; 3. reinforcing connecting plate; 4. washer; 5. slide groove; 6. plum blossom head; 7. hexagonal unlocking groove; 8. protection component; 81. guide groove; 82. cover cap; 83. bump; 9. removal component; 91. cavity; 92. hexagonal rotating rod; 93. hexagonal slot. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application belong to the scope of protection of this application.

[0036] In the description of the present application, it should be noted that the terms used here are only for describing specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. For ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be regarded as part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as merely exemplary, rather than as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0037] Embodiment 1:

[0038] like Figure 1-Figure 7 As shown, this embodiment provides a high-strength bolt, including a screw rod 1 and a bolt head 2, characterized in that:

[0039] A reinforcing connecting plate 3 is arranged between the screw rod 1 and the bolt head 2. There are a plurality of reinforcing connecting plates 3 which are symmetrically distributed.

[0040] The washer 4 is arranged on the screw rod 1 and is located at the lower end of the bolt head 2;

[0041] The number of the slide grooves 5 is consistent with that of the reinforcing connecting plates 3 and they correspond one to one. The slide grooves 5 are opened on the washers 4 , and the washers 4 pass through the reinforcing connecting plates 3 under the action of the slide grooves 5 .

[0042] In the present technical solution, the reinforcing connecting plate 3 is arranged between the screw rod 1 and the bolt head 2. The stability of the connection is enhanced by a plurality of symmetrically distributed reinforcing connecting plates 3, and the connection strength of the screw rod 1 and the bolt head 2 structure is strengthened, so that the screw rod 1 and the bolt head 2 are not easy to break. The washer 4 is located on the screw rod 1 and at the lower end of the bolt head 2, playing the role of supporting and dispersing pressure. The number of the slide grooves 5 is consistent with that of the reinforcing connecting plates 3, and they correspond one-to-one with each other, and are located on the washers 4. The opening of the slide grooves 5 enables the washers 4 to adjust their positions by sliding to adapt to different stress conditions, thereby ensuring that the high-strength bolts can be constructed more stably and avoiding loosening, thereby improving the adaptability and stability of the bolts.

[0043] Embodiment 2:

[0044] This embodiment provides a high-strength bolt, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0045] like Figure 1 , Figure 2 , Figure 4 , Figure 5 and Figure 6 As shown, in this embodiment, the lower end of the screw rod 1 is optimized and provided with a plum head 6.

[0046] In the present technical solution, the bolts are installed by means of an electric torsion shear wrench, and the bolts are tightened by means of reaction force. When the torque reaches the specified requirement, the plum head 6 will break off. The breaking of the plum head 6 indicates that the applied torque reaches the qualified quality standard and the bolts have been tightened, thereby ensuring the performance and effectively maintaining the stability of the connection. In addition, it is not easy to loosen during long-term use and has good anti-seismic performance. The design of the plum head 6 improves the performance and reliability of the bolts and increases the stability and strength of the connection.

[0047] Embodiment 3:

[0048] This embodiment provides a high-strength bolt, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0049] like Figure 4 , Figure 6 and Figure 7 As shown, in this embodiment, it is optimized that a hexagonal unlocking groove 7 is provided on the bolt head 2, and the hexagonal unlocking groove 7 and the bolt head 2 are integrated into one design.

[0050] In the present technical solution, the hexagonal unlocking groove 7 is used to facilitate the user to disassemble and install the high-strength bolt. When installing or disassembling the bolt, a specific tool is used, so that it cannot be disassembled without a special disassembly device, thereby achieving an anti-theft effect.

[0051] Embodiment 4:

[0052] This embodiment provides a high-strength bolt, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0053] like Figure 1-Figure 4 As shown, in this embodiment, it is optimized that a protective component 8 is provided on the bolt head 2 to prevent the hexagonal unlocking groove 7 from being exposed to humid air.

[0054] like Figure 1-Figure 4 As shown, in this embodiment, the protection component 8 is optimized to include:

[0055] There are six guide grooves 81, which are symmetrically arranged on the outer side of the bolt head 2;

[0056] A cap 82 is sleeved on the outer side of the bolt head 2;

[0057] The number of the protrusions 83 is consistent with that of the guide grooves 81 and they correspond one to one. The protrusions 83 are arranged inside the cap 82 , and the protrusions 83 are embedded in the guide grooves 81 and are slidably connected to the guide grooves 81 .

[0058] In the present technical solution, a protective component 8 is provided on the bolt head 2, which is used to prevent the hexagonal unlocking groove 7 from being directly exposed to humid air, thereby reducing the risk of rust and corrosion. The design of the protective component 8 ensures that the hexagonal unlocking groove 7 is effectively protected, making it less susceptible to erosion by the external environment, thereby maintaining the integrity and functionality of the bolt head 2. There are a total of six guide grooves 81, which are symmetrically arranged on the outside of the bolt head 2, and are used to guide and fix the positions of the cap 82 and the protrusion 83. The cap 82 is sleeved on the outside of the bolt head 2, covering the hexagonal unlocking groove 7, and plays a protective role to prevent direct exposure to the external environment. The protrusion 83 is the same in number as the guide groove 81, and is used in combination with the cap 82. A raised structure is arranged inside, which is connected to the guide groove 81 by a sliding manner to ensure that the cap 82 is firmly fixed and prevents it from falling off. When the cap 82 and the protrusion 83 on the bolt head 2 are combined with the guide groove 81, the cap 82 completely covers the hexagonal unlocking groove 7, thereby preventing direct contact with humid air. The protrusion 83 ensures that the cap 82 is firmly positioned and not easy to move or fall off through a sliding connection with the guide groove 81, thereby effectively protecting the hexagonal unlocking groove 7 from the external environment. This not only protects the appearance of the bolt head 2, but also extends the service life of the bolt and improves its reliability and durability, especially in humid or corrosive environments.

[0059] Embodiment 5:

[0060] This embodiment provides a high-strength bolt, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0061] like Figure 6 and Figure 7 As shown, in this embodiment, the optimization further includes a taking-out component 9, which includes:

[0062] A cavity 91 is provided inside the screw 1, and the cavity 91 passes through the upper end of the screw 1;

[0063] A hexagonal rotating rod 92 is embedded in the cavity 91, and the hexagonal rotating rod 92 passes through the bolt head 2 and is connected to the hexagonal unlocking groove 7;

[0064] The hexagonal slot 93 is formed inside the hexagonal rotating rod 92 .

[0065] In the present technical solution, during the construction process, if the screw 1 and the bolt head 2 are broken, the screw 1 will be fixed inside the steel structure and will not be easy to remove, thus affecting the construction of the steel structure. Therefore, the user uses a specific tool to insert into the hexagonal slot 93, and then rotates the specific tool to rotate the hexagonal turning rod 92. During the rotation of the hexagonal turning rod 92, the screw 1 is squeezed, so that the screw 1 is loosened, and the hexagonal turning rod 92 and the screw 1 are taken out, and the screw 1 is detached from the steel structure. In this way, the screw 1 broken in the steel structure can be smoothly removed, which is convenient for construction.

[0066] The embodiments of the present application are described above in conjunction with the accompanying drawings. In the absence of conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

Claims

1. A high-strength bolt, comprising a screw rod (1) and a bolt head (2), characterized in that: A reinforcing connecting plate (3) is arranged between the screw rod (1) and the bolt head (2), and the reinforcing connecting plates (3) are provided in a plurality and are symmetrically distributed; A washer (4) is arranged on the screw rod (1) and is located at the lower end of the bolt head (2); The number of the slide grooves (5) is consistent with the number of the reinforcing connecting plates (3) and they correspond one to one. The slide grooves (5) are opened on the washers (4). The washers (4) pass through the reinforcing connecting plates (3) under the action of the slide grooves (5).

2. A high-strength bolt according to claim 1, characterized in that: The lower end of the screw rod (1) is provided with a plum blossom head (6).

3. A high-strength bolt according to claim 1, characterized in that: The bolt head (2) is provided with a hexagonal unlocking groove (7), and the hexagonal unlocking groove (7) and the bolt head (2) are of integrated design.

4. A high strength bolt according to claim 3, characterized in that: The bolt head (2) is provided with a protective component (8) for preventing the hexagonal unlocking groove (7) from being exposed to humid air.

5. A high strength bolt according to claim 4, characterized in that: The protection component (8) comprises: There are six guide grooves (81) in total, which are symmetrically arranged on the outer side of the bolt head (2); A cover cap (82) is sleeved on the outer side of the bolt head (2); The number of the protrusions (83) is consistent with that of the guide grooves (81) and they correspond one to one. The protrusions (83) are arranged inside the cover cap (82), and the protrusions (83) are embedded in the guide grooves (81) and are slidably connected to the guide grooves (81).

6. A high strength bolt according to claim 3, characterized in that: Also included is a removal component (9), the removal component (9) comprising: A cavity (91) is provided inside the screw (1), and the cavity (91) passes through the upper end of the screw (1); A hexagonal rotating rod (92) is embedded in the cavity (91), and the hexagonal rotating rod (92) passes through the bolt head (2) and is connected to the inner hexagonal unlocking groove (7); The hexagonal slot (93) is arranged inside the hexagonal rotating rod (92).

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