Hexagonal flange bolt with anti-loosening structure

Abstract

The utility model belongs to the technical field of hexagonal flange bolts, and particularly relates to a hexagonal flange bolt with an anti-loosening structure. The hexagonal flange bolt with the anti-loosening structure comprises a threaded rod, a hexagonal bolt head is mounted at the top of the threaded rod, a screwing opening used for controlling mounting and dismounting of the bolt is formed in the top end of the hexagonal bolt head, a flange plate is fixedly mounted at the bottom of the hexagonal bolt head, and the hexagonal bolt head is connected with the threaded rod through the flange plate. A first anti-loose assembly used for improving the bolt installation effect is installed on the bottom wall of the flange plate, a second anti-loose assembly used for improving the anti-loose effect is installed at the position, close to the flange plate, in the threaded rod, the first anti-loose assembly can be formed through a double-step anti-skid tooth array, and static locking is achieved through plastic deformation generated by main teeth; the auxiliary teeth adapt to micro displacement of the contact face through elastic deformation and are used in cooperation with the second anti-loosening assembly to exert extra pre-tightening force on the bolt, and the anti-loosening effect of the bolt is further guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to hexagonal flange bolt technical field, concretely is a hexagonal flange bolt with anti loosening structure. BACKGROUND

[0002] Hexagonal flange face bolt is composed of hexagonal bolt head, flange plate and screw rod three parts, referring to Figure 1 It is usually used with hexagonal flange nut, and they are mainly used for fastening two parts with through hole. When assembling, the hexagonal bolt head of the hexagonal flange bolt is fixed on one side of the connected part with wrench, and the hexagonal nut of the hexagonal flange nut is sleeved on the hexagonal head on the other side of the connected part, and the hexagonal flange nut is tightened according to the specified torque by rotating the sleeve with the air gun.

[0003] Chinese patent authorized announcement number: CN222315600U provides a hexagonal flange bolt with anti loosening structure, and the scheme " includes bolt rod, the outer wall one side of bolt rod is equipped with gasket, and the one end of bolt rod is provided with mounting hole, the inside of mounting hole is provided with gripping mechanism;The inside of mounting hole is penetrated with the penetrating rod, and the one end of penetrating rod is connected with the pressing head, the both sides of pressing head are provided with rotating plate, and the one end away from pressing head of rotating plate is fixed with connecting block. In the utility model, the bolt rod is connected with the penetrating rod through the mounting hole thread, so that the pressing head penetrates the bolt rod, and the rotating plate is driven, and the connecting block is rotated on the supporting rod, so that the insertion piece penetrates the through groove and is clamped with the object to avoid loosening. When disassembling, the penetrating rod is disassembled, and under the elasticity of fixed block and spring, the insertion piece is reset and separated from the object.

[0004] The above device installs the extension rod according to the demand through the design of connecting rod and installation hole, which increases the complexity of personnel operation in the actual installation process, reduces the work efficiency, and at the same time, the installation of more structures in the screw rod reduces the hardness and rigidity of the bolt itself, so that the device has certain use limitation. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a hexagonal flange bolt with anti loosening structure to solve the problems in the above background technology.

[0006] To achieve the above object, the utility model provides the following technical scheme: a hexagonal flange bolt with anti -loose structure, including threaded rod, the top of threaded rod installs hexagonal bolt head, the top of hexagonal bolt head is equipped with the screwing opening for controlling bolt installation and dismounting, the bottom of hexagonal bolt head is fixedly installed flange plate, hexagonal bolt head passes through flange plate and threaded rod connection, the bottom wall of flange plate installs the first anti -loose subassembly for increasing bolt installation effect, the inside of threaded rod is installed with the second anti -loose subassembly for improving the effect of anti -loose in flange plate place.

[0007] Preferably, the first anti-loose assembly includes a plurality of main teeth and secondary teeth arranged in a circular pattern around the center of the flange plate, the main teeth are designed as 60° trapezoidal, and the secondary teeth are designed as 45° zigzag.

[0008] Preferably, the second anti-loose assembly includes a cavity formed in the top end of the threaded rod, six elastic arms are equidistantly mounted on the inner wall of the cavity, the two ends of the elastic arms are fixedly connected to the inner wall of the threaded rod, and a memory alloy ring is fixedly mounted at the end of the elastic arm.

[0009] Preferably, a magnetic ring is mounted on the inside of the hexagonal bolt head near the outside.

[0010] Preferably, a plurality of spherical protrusions are equidistantly fixedly connected to the outer wall of the threaded rod at the front and rear ends, and the spherical protrusions are designed as hemispherical.

[0011] Preferably, the memory alloy ring is made of nickel-titanium alloy material.

[0012] Compared with the prior art, the hexagonal flange bolt with anti-loose structure has the following advantages: the first anti-loose assembly is composed of a double-stage anti-slip tooth array, the static locking is achieved by plastic deformation of the main teeth, the secondary teeth adapt to the micro-displacement of the contact surface through elastic deformation, and the second anti-loose assembly is used to apply additional pre-tightening force to the bolt, thereby further ensuring the anti-loose effect of the bolt. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 The utility model provides a hexagonal flange bolt with anti-loose structure of front view solid structure schematic diagram;

[0014] Figure 2 The utility model provides a hexagonal flange bolt with anti-loose structure of bottom view solid structure schematic diagram;

[0015] Figure 3 The utility model Figure 2 provides an enlarged structure schematic diagram of A in the utility model;

[0016] Figure 4 The utility model provides a hexagonal flange bolt with anti-loosening structure's partial section structure schematic diagram.

[0017] In the drawing: 1, threaded rod; 2, hexagonal bolt head; 3, screwing mouth; 4, flange plate; 41, main tooth; 42, secondary tooth; 5, elastic arm; 51, memory alloy ring; 6, magnetic ring; 7, ball-shaped convex. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model and not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the utility model.

[0019] Please refer to Figures 1-4 The utility model provides a technical scheme: a hexagonal flange bolt with anti-loosening structure, including threaded rod 1, the top of threaded rod 1 is installed with hexagonal bolt head 2, the top end of hexagonal bolt head 2 is set up screwing mouth 3 for controlling bolt installation and dismounting, the bottom of hexagonal bolt head 2 is fixedly installed with flange plate 4, hexagonal bolt head 2 is connected through flange plate 4 and threaded rod 1, the bottom wall of flange plate 4 is installed first anti-loosening subassembly for increasing bolt installation effect, the inside of threaded rod 1 is installed second anti-loosening subassembly for improving the effect of loosening near flange plate 4;First anti-loosening subassembly includes a plurality of main teeth 41 and secondary teeth 42 that are annularly distributed with the center of flange plate 4 as the axis, main tooth 41 is 60 ° trapezoidal design, secondary tooth 42 is 45 ° zigzag design, and secondary tooth 42 is staggered and set in the gap of main tooth 41.

[0020] Through the above technical scheme, main tooth 41 and secondary tooth 42 are set in the working surface of flange plate 4 and object contact, thereby forming double-step anti-skid tooth array, compared with toothless flange and single-tooth flange, the structure design can guarantee the deep locking of object through double-layer anti-skid tooth design, guarantee the stability of bolt installation, and main tooth 41 and secondary tooth 42 are staggered design, thereby guaranteeing the uniformity of occlusion.

[0021] Please refer to Figure 1 、 Figure 3 and Figure 4The second anti-loosening assembly comprises a cavity formed in the inner top end of the threaded rod 1, the inner wall of the cavity is equidistantly provided with six elastic arms 5, both ends of the elastic arm 5 are fixedly connected to the inner wall of the threaded rod 1, and the tail end of the elastic arm 5 is fixedly provided with a memory alloy ring 51; the inner part of the hexagonal bolt head 2 is provided with a magnetic ring 6 close to the outer side; the outer wall of the threaded rod 1 is equidistantly fixedly connected with a plurality of spherical protrusions 7 at the front and rear ends, and the spherical protrusion 7 is designed in a semispherical shape; and the memory alloy ring 51 is made of a nickel-titanium alloy material.

[0022] Through the structural design of the elastic arm 5 and the memory alloy ring 51 made of a nickel-titanium alloy material, when the environmental temperature changes or is subjected to vibration, the element changes in shape, additional pre-tightening force is applied to the bolt, and the anti-loosening effect is further enhanced; through the design of the spherical protrusion 7, mechanical interference locking can be formed during the installation of the hexagonal flange bolt, and the first anti-loosening assembly and the second anti-loosening assembly are used in cooperation to improve the tightness of bolt installation and assembly.

[0023] Working principle: the threaded rod 1 is connected with the hexagonal bolt head 2 through the flange plate 4, the hexagonal flange bolt is formed by the threaded rod 1, the hexagonal bolt head 2 and the flange plate 4, the main teeth 41 and the secondary teeth 42 are arranged on the bottom of the flange plate 4 and the working surface in contact with the object, the main teeth 41 are designed in a 60° trapezoidal shape and are equidistantly distributed along the flange plate 4, the secondary teeth 42 are arranged at the gap of the main teeth 41 and are designed in a 45° sawtooth shape, plastic deformation of the main teeth 41 is used to realize static locking, and the secondary teeth 42 are adapted to the micro displacement of the contact surface through elastic deformation, the design of the main teeth 41 and the secondary teeth 42 can ensure the stability of the installation of the hexagonal flange bolt and the object, ensure the anti-loosening effect, and a plurality of elastic arms 5 are arranged in a circular array around the center of the flange plate 4 in the transition zone of the flange plate 4 and the screw shaft, and a memory alloy ring 51 made of a nickel-titanium alloy material is arranged on the outer wall of the elastic arm 5, in the use process, the pre-tightening force is transmitted to the elastic arm 5 to bend and deform, the stress is concentrated at the root, the nickel-titanium alloy ring is triggered to expand through phase change, additional pre-tightening force is applied to the bolt, and the anti-loosening effect is further enhanced, and the spherical protrusion 7 arranged on the outer wall of the threaded rod 1 can produce controllable plastic deformation during bolt assembly, mechanical interference locking is formed, and the stability of assembly is improved.

[0024] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A hexagonal flange bolt with anti-loosening structure, comprising a threaded shank (1), characterized in that: The top of the threaded rod (1) is provided with a hexagonal bolt head (2), the top end of the hexagonal bolt head (2) is provided with a screwing opening (3) for controlling the mounting and dismounting of the bolt, the bottom of the hexagonal bolt head (2) is fixedly provided with a flange plate (4), the hexagonal bolt head (2) is connected with the threaded rod (1) through the flange plate (4), the bottom wall of the flange plate (4) is provided with a first anti-loosening assembly for increasing the bolt mounting effect, the inside of the threaded rod (1) is provided with a second anti-loosening assembly near the flange plate (4) for improving the anti-loosening effect; The first anti-loosening assembly comprises a plurality of main teeth (41) and secondary teeth (42) arranged in a ring shape with the center of the flange plate (4) as the axis, the main teeth (41) are designed in a 60° trapezoidal shape, the secondary teeth (42) are designed in a 45° zigzag shape, and the secondary teeth (42) are staggered and arranged in the gaps of the main teeth (41); The second anti-loosening assembly comprises a cavity arranged at the top end of the inside of the threaded rod (1), six elastic arms (5) are equidistantly arranged on the inner wall of the cavity, the two ends of the elastic arms (5) are fixedly connected to the inner wall of the threaded rod (1), and a memory alloy ring (51) is fixedly arranged at the end of the elastic arm (5).

2. The hexagonal flange bolt with anti-loosening structure according to claim 1, characterized in that: A magnetic ring (6) is arranged at the inside of the hexagonal bolt head (2) near the outer side.

3. The hexagonal flange bolt with anti-loosening structure according to claim 1, characterized in that: A plurality of spherical protrusions (7) are equidistantly fixedly connected to the front and rear ends of the outer wall of the threaded rod (1), and the spherical protrusions (7) are designed in a semispherical shape.

4. The hexagonal flange bolt with the anti-loosening structure according to claim 3, characterized in that: The memory alloy ring (51) is made of a nickel-titanium alloy material.

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