Hexagonal hot-galvanized high-strength bolt

Abstract

The hexagonal hot galvanizing high-strength bolt comprises a bolt body and a cushion pad, the bolt body comprises a screw rod and a hexagonal head, the lower end face of the hexagonal head is fixedly connected with the upper end face of the screw rod, the cushion pad penetrates through the lower end face of the hexagonal head and then is arranged in the hexagonal head, the cushion pad surrounds the periphery of the screw rod, and the hexagonal head is arranged in the cushion pad. The cushion pad is fixedly connected with the hexagonal head, a screwing groove is formed in the upper end face of the hexagonal head, and the screwing groove is hexagonal. The beneficial effects of the utility model are that: the utility model is suitable for various dismounting tools, can still be dismounted after oxidation, and is not easy to cause the purpose of extrusion deformation to the installed part.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of bolt, especially a hexagonal hot-dip galvanized high-strength bolt. BACKGROUND

[0002] Hexagonal bolt refers to the fastener composed of head and screw rod. Generally, the head will leak out to facilitate installation and disassembly, but sometimes when disassembly is needed, there is no suitable tool at hand, and the head of the bolt exposed for a long time will become fragile due to oxidation, even the hexagonal head will slip and be difficult to disassemble. Because the bolt has a head, the lower end face of the head will be extruded and even deformed when tightened, even if a washer is placed sometimes, but the metal washer will rust and the non-metal washer will be exposed, which will be very inconvenient in long-term outdoor environment.

[0003] A kind of connected bolt with extension cover is disclosed in Chinese patent publication No. CN221547505U, authorized on August 16, 2024, which belongs to the technical field of bolts. The bolt includes a bolt cap, a bottom connecting extension block is provided on the bottom surface of the bolt cap, a connecting rod is provided on the bottom surface of the bottom connecting extension block, a threaded rod is provided on the bottom surface of the connecting rod, a top extension cover is provided on the top surface of the bolt cap, a turning cover is provided on the top surface of the top extension cover, and a recessed entrance is provided on the top surface of the turning cover. The bolt avoids damage to the arc-shaped bolt cap caused by machining tools through the top extension cover, positioning grooves assist in positioning, improving the effect of thread opening, and the turning cover assists workers in operating the entire bolt. Workers can use wrenches, vices, etc. for operation, while the recessed entrance and hexagonal groove can facilitate workers to operate when lacking tools, improving the operational convenience of the bolt and facilitating use. The utility model has the disadvantages of protrusions, which are not convenient, do not consider the problem of oxidation, and are also prone to over-tightening, which can extrude and deform the installed part. SUMMARY

[0004] The utility model is to overcome the inconvenience of tools at hand for disassembling bolts or the difficulty of disassembling bolts after oxidation, and the deformation of the installed part caused by over-tightening, and provides a hexagonal hot-dip galvanized high-strength bolt that can be disassembled with various tools and still be disassembled after oxidation, and is not prone to extruding and deforming the installed part.

[0005] To achieve the above-mentioned purpose, the utility model adopts the following technical solutions:

[0006] A hexagonal hot-dip galvanized high-strength bolt comprises a bolt and a buffer pad, the bolt comprises a screw rod and a hexagonal head, the lower end surface of the hexagonal head is fixedly connected with the upper end surface of the screw rod, the buffer pad is placed in the hexagonal head after passing through the lower end surface of the hexagonal head, the buffer pad surrounds the screw rod, the buffer pad is fixedly connected with the hexagonal head, the upper end surface of the hexagonal head is provided with a twisting groove, and the shape of the twisting groove is hexagonal.

[0007] In use, the screw rod is screwed in, and then the hexagonal head is exposed outside, when disassembly is needed, a common wrench, a hexagonal wrench or an internal hexagonal wrench can be used to screw in the twisting groove, the buffer pad of the hexagonal head can reduce the extrusion of the hexagonal head on the installed part when the screw rod is screwed in, the buffer pad is not exposed outside, and the aging time is prolonged, if it is worried that the outdoor environment is easy to oxidize for a long time, something can be embedded in the twisting groove to slow down the oxidation, so that even if the external hexagonal head is oxidized, the bolt can be taken out by using the twisting groove, there is no protruding part, the bolt does not affect the hot-dip galvanizing process, and the purpose of adapting to various disassembly tools and still having a way to disassemble after oxidation and not easily causing extrusion deformation of the installed part is achieved.

[0008] As a preferred, the side surface of the hexagonal head is provided with an auxiliary strip-shaped groove, the auxiliary strip-shaped groove has a plurality of strips and is in a group of two, and the two auxiliary strip-shaped grooves in the group are symmetrical. The two symmetrical auxiliary strip-shaped grooves facilitate to increase the side surface friction, facilitate to use pliers to rotate and disassemble, and can also be clamped and rotated by using an elongated strip tool.

[0009] As a preferred, the hexagonal head is provided with a limiting groove, the limiting groove has a plurality of limiting grooves and is uniformly distributed around the twisting groove, and the limiting groove is in communication with the inside of the twisting groove. The limiting groove can be used for disassembly by a screwdriver and the like, and when the twisting groove slips, a filler can be added to clamp the filler, so that the disassembly tool can continue to be disassembled.

[0010] As a preferred, the lower end of the hexagonal head is provided with a clamping groove, the shape of the clamping groove corresponds to the shape of the buffer pad, the buffer pad is placed in the clamping groove, the lower end surface of the buffer pad is placed below the clamping groove, and the buffer pad is fixedly connected with the lower end surface of the hexagonal head through the clamping groove. The clamping groove facilitates to hide most of the buffer pad, which is convenient for installation and prevents the buffer pad from aging.

[0011] As a preferred, the lower end surface of the buffer pad is provided with an annular groove, and the shape of the annular groove corresponds to the shape of the buffer pad. The annular groove facilitates extrusion of the excess buffer pad into the annular groove, and prevents extrusion outward, thereby delaying the aging of the buffer pad.

[0012] As a preferred, the lower end of the screw rod is conical. The conical lower end of the screw rod facilitates to find the installation hole, and facilitates installation.

[0013] The utility model discloses beneficial effect is: adaptation multiple dismounting tool and still can have method to dismount after oxidation, also not easy to cause extrusion deformation to the purpose of being installed piece, two symmetrical auxiliary strip groove conveniently increase lateral friction force, conveniently use pincers to rotate and dismount, also can use the tool of slender strip and hold to rotate, the limiting groove can be used for screwdriver and the like to demolish, and when the twist groove slips, can add filler, hold the filler, in this way let the dismounting tool continue to can dismount, the clamping groove conveniently lets most buffer pad hide in it, convenient installation, prevent buffer pad aging again, annular groove is convenient to the extrusion of the excess buffer pad to annular groove, will not extrude outward, delays buffer pad aging, the lower end of conical screw rod is convenient to find accurate installation hole, and installation is convenient. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is the structure schematic diagram of the utility model;

[0015] Figure 2 It is the sectional view of the front view of the utility model;

[0016] Figure 3 It is Figure 2 the enlarged view of the detail A of.

[0017] In the drawing: 1. screw rod, 2. hexagonal head, 3. buffer pad, 4. twist groove, 5. auxiliary strip groove, 6. limiting groove, 7. clamping groove, 8. annular groove. DETAILED DESCRIPTION

[0018] The utility model will be further described below in conjunction with the drawings and specific embodiment.

[0019] As Figure 1 and Figure 2 in the embodiment, a kind of hexagonal hot-dip galvanizing high-strength bolt, it includes bolt and buffer pad 3, bolt includes screw rod 1 and hexagonal head 2, the lower end surface of hexagonal head 2 is fixedly connected with the upper end surface of screw rod 1, buffer pad 3 is placed in hexagonal head 2 after passing through the lower end surface of hexagonal head 2, buffer pad 3 is around the periphery of screw rod 1, buffer pad 3 is fixedly connected with hexagonal head 2, and the upper end surface of hexagonal head 2 is equipped with twist groove 4, and the shape of twist groove 4 is hexagonal.

[0020] As Figures 1 to 3 shown, the side surface of hexagonal head 2 is equipped with auxiliary strip groove 5, and auxiliary strip groove 5 has several and is in two groups, and the two auxiliary strip grooves 5 in a group are symmetrical.

[0021] As Figure 1 shown, hexagonal head 2 is equipped with limiting groove 6, and limiting groove 6 has several and is evenly distributed around twist groove 4, and limiting groove 6 is connected with the inside of twist groove 4.

[0022] As Figure 2 andFigure 3 As shown, the lower end of the hexagonal head 2 is provided with a clamping groove 7, the shape of the clamping groove 7 corresponds to the buffer pad 3, the buffer pad 3 is placed in the clamping groove 7, the lower end surface of the buffer pad 3 is placed below the clamping groove 7, and the buffer pad 3 is fixedly connected with the lower end surface of the hexagonal head 2 through the clamping groove 7.

[0023] As shown in Figure 2 and Figure 3 As shown, the lower end surface of the buffer pad 3 is provided with an annular groove 8, and the shape of the annular groove 8 corresponds to the shape of the buffer pad 3.

[0024] As shown in Figure 1 and Figure 2 The lower end of the screw rod 1 is tapered.

[0025] In use, the screw rod 1 is screwed in, and then the hexagonal head 2 is exposed outside. When disassembly is needed, a common wrench or hexagonal wrench can be used to screw the hexagonal head 2. The two symmetrical auxiliary strips 5 facilitate increasing the side friction and facilitate using pliers to rotate and disassemble. In addition, a slender strip tool can be used to clamp and rotate, or an internal hexagonal wrench can be used to extend into the screwing groove 4 to screw, or a screwdriver or the like can be used to clamp and limit the slot 6 to screw. The non-metallic buffer pad 3 in the clamping groove 7 below the hexagonal head 2 can reduce the extrusion of the hexagonal head 2 on the installed part when the screw rod 1 is screwed in. The excess part of the buffer pad 3 will be extruded into the annular groove 8, so that the buffer pad 3 is not exposed, and the aging time is also prolonged. If it is worried that long-term outdoor environment is easy to oxidize, something can be embedded in the screwing groove 4 to slow down the oxidation. In this way, even if the external hexagonal head 2 is oxidized, the bolt can be taken out by the screwing groove 4. There is no protruding part, and the bolt does not affect the hot galvanizing process, so as to achieve the purpose of adapting to various disassembly tools and still having a way to disassemble after oxidation, and not easy to cause extrusion deformation of the installed part.

Claims

1. A hexagonal hot-dip galvanizing high-strength bolt, characterized by, The bolt comprises a screw rod (1) and a hexagonal head (2), the lower end surface of the hexagonal head (2) is fixedly connected with the upper end surface of the screw rod (1), a buffer pad (3) is arranged in the hexagonal head (2) after penetrating through the lower end surface of the hexagonal head (2), the buffer pad (3) surrounds the screw rod (1), the buffer pad (3) is fixedly connected with the hexagonal head (2), a screwing groove (4) is arranged on the upper end surface of the hexagonal head (2), and the shape of the screwing groove (4) is hexagonal.

2. The hexagonal hot-dip galvanizing high-strength bolt according to claim 1, wherein An auxiliary strip-shaped groove (5) is arranged on the side surface of the hexagonal head (2), the auxiliary strip-shaped groove (5) has a plurality of strips and is arranged in two groups, and the two auxiliary strip-shaped grooves (5) in one group are symmetrical.

3. The hexagonal hot-dip galvanizing high-strength bolt according to claim 1, wherein A limiting groove (6) is arranged on the hexagonal head (2), the limiting groove (6) has a plurality of grooves and is uniformly distributed around the screwing groove (4), and the limiting groove (6) is connected with the inside of the screwing groove (4).

4. The hexagonal hot-dip galvanizing high-strength bolt according to claim 1, wherein A clamping groove (7) is arranged on the lower end of the hexagonal head (2), the shape of the clamping groove (7) corresponds to that of the buffer pad (3), the buffer pad (3) is arranged in the clamping groove (7), the lower end surface of the buffer pad (3) is arranged below the clamping groove (7), and the buffer pad (3) is fixedly connected with the lower end surface of the hexagonal head (2) through the clamping groove (7).

5. The hexagonal hot-dip galvanizing high-strength bolt according to claim 4, wherein An annular groove (8) is arranged on the lower end surface of the buffer pad (3), and the shape of the annular groove (8) corresponds to that of the buffer pad (3).

6. The hexagonal hot-dip galvanizing high-strength bolt according to claim 1, wherein The lower end of the screw rod (1) is tapered.

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