Lock bolt with axial offset threads

Abstract

The utility model relates to the technical field of lock bolts, and discloses a lock bolt with axial offset threads, which comprises a hexagonal block, a threaded rod is fixedly welded on the outer wall of the bottom of the hexagonal block, a screw rod is fixedly welded at the bottom of a clamping block, the outer wall of the screw rod is in threaded connection with a disc, and the disc is in threaded connection with the clamping block. The outer walls of the two fixing rods are rotationally connected with extrusion blocks, anti-skid grooves are formed in the outer walls of the two extrusion blocks, and sliding grooves are formed in the two extrusion blocks. According to the anti-loosening bolt with the axial offset threads, the threaded rod is firstly plugged into a to-be-fixed bolt hole, the threaded rod rotates to achieve the effect of fastening parts, in order to prevent the bolt from loosening due to vibration, a clamping block is rotated to drive a lead screw to rotate, a disc is driven to move downwards and a transverse rod is driven to move, and the transverse rod will extrude a transverse groove; and the anti-skid groove is attached to the interior of the threaded groove, the effect of limiting rotation of the threaded rod can be achieved, and the effect of preventing looseness can be achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of anti-loosening bolts, in particular to an anti-loosening bolt with axially offset thread teeth. Background Art

[0002] Among common fastening components, bolts are a common and widely used component. They play a role in various fields such as machinery, electricity, automobiles, railways, aviation, navigation, and military. Especially under strong vibrations and irregular strong fluctuations, bolts often become loose and fall off, leading to unsafe accidents, seriously affecting the normal operation and use of machinery and vehicles, and also causing great losses to the national economy.

[0003] In the prior art, a flat washer and a spring washer with an oblique opening are used near the nut head. The elastic deformation of the spring washer is used to axially tension the thread pair, and the oblique opening of the washer is used to prevent loosening. However, the anti-loosening effect is not ideal under the high-frequency, violent and long-term vibration of the vibrating equipment. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the present invention provides an anti-loosening bolt with axially offset thread teeth to solve the problem mentioned in the above background technology that the anti-loosening effect is not ideal in the high-frequency, violent and long-term vibration of the vibration equipment in the existing technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solution: an anti-loosening bolt with axially offset thread teeth, comprising a hexagonal block, a threaded rod fixedly welded to the bottom outer wall of the hexagonal block, a cylinder welded to the bottom height of the threaded rod, a support plate fixedly installed inside the hexagonal block, a clamping block rotatably connected to the inside of the hexagonal block, a screw rod fixedly welded to the bottom of the clamping block, a disc threadedly connected to the outer wall of the screw rod, four struts rotatably connected to the outer wall of the disc, two cross bars fixedly installed between the four struts, two fixing rods fixedly installed inside the threaded rod, the outer walls of the two fixing rods are rotatably connected to extrusion blocks, the outer walls of the two extrusion blocks are provided with anti-slip grooves, and the interiors of the two extrusion blocks are provided with sliding grooves.

[0006] Preferably, the interiors of the two sliding grooves are respectively slidably connected to the outer walls of the two cross bars, and the interiors of the threaded rods are slidably connected to the outer walls of the two extrusion blocks.

[0007] Preferably, the outer walls of the two extrusion blocks are respectively slidably connected to the outer walls of the four support rods, and the inner part of the support plate is rotationally connected to the outer wall of the screw rod.

[0008] Preferably, a plurality of the anti-slip grooves are arranged in a linear array on the outer wall of the extrusion block, and the two extrusion blocks are symmetrically arranged on both sides of the screw rod.

[0009] Preferably, the screw rod is arranged at the axial center position of the threaded rod, and a groove is provided inside the engaging block.

[0010] Compared with the prior art, the beneficial effects of the present invention are:

[0011] 1. The anti-loosening bolt with axially offset thread teeth achieves the effect of fastening parts by first inserting the threaded rod into the bolt hole to be fixed and rotating the threaded rod. To prevent the bolt from loosening under high-speed vibration, the rotating engaging block drives the screw to rotate, drives the disc to move downward, drives the support rods on both sides to move, drives the cross bar to move, and the cross bar will squeeze the cross groove to achieve the effect of squeezing the extrusion block. The extrusion block will rotate along the fixed rod and fit the anti-slip groove inside the thread groove, which can limit the rotation of the threaded rod and prevent loosening.

[0012] 2. The anti-loosening bolt with axially offset thread teeth is arranged at the axis of the threaded rod through a screw rod, which can more conveniently drive the disc to move downward. A groove is provided inside the locking block, which can be conveniently used with tools to achieve the effect of driving the locking block to rotate. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a three-dimensional schematic diagram of the structure of the utility model;

[0014] Figure 2 This is a schematic front view cross-sectional diagram of the structure of the utility model;

[0015] Figure 3 For the utility model structure Figure 2 Enlarged schematic diagram of point A in the middle.

[0016] In the figure: 1. Hexagonal block; 2. Threaded rod; 3. Cylinder; 4. Support plate; 5. Clamping block; 6. Screw rod; 7. Disc; 8. Support rod; 9. Cross bar; 10. Fixed rod; 11. Extrusion block; 12. Anti-slip groove; 13. Cross groove. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0018] Example:

[0019] Please refer to Figures 1-3.

[0020] A locking bolt with an axially offset thread comprises a hexagonal block 1, a threaded rod 2 is fixedly welded to the outer wall of the bottom of the hexagonal block 1, a cylinder 3 is welded to the bottom height of the threaded rod 2, a support plate 4 is fixedly installed inside the hexagonal block 1, a clamping block 5 is rotatably connected to the inside of the hexagonal block 1, a screw rod 6 is fixedly welded to the bottom of the clamping block 5, a disc 7 is threadedly connected to the outer wall of the screw rod 6, four struts 8 are rotatably connected to the outer wall of the disc 7, two cross bars 9 are fixedly installed between the four struts 8, two fixing rods 10 are fixedly installed inside the threaded rod 2, the outer walls of the two fixing rods 10 are rotatably connected to extrusion blocks 11, the outer walls of the two extrusion blocks 11 are provided with anti-slip grooves 12, and the interiors of the two extrusion blocks 11 are provided with sliding grooves;

[0021] Specifically, when the bolt needs to be used, first insert the threaded rod 2 into the bolt hole to be fixed, and then rotate the hexagonal block 1. The hexagonal block 1 will drive the threaded rod 2 to rotate, and the threaded rod 2 will cooperate with the threaded hole to achieve the effect of fastening the parts. To prevent the bolt from loosening under high-speed vibration, rotate the clamping block 5. The clamping block 5 will drive the screw rod 6 to rotate, and the screw rod 6 will drive the disc 7 to move downward. The disc 7 will drive the support rods 8 on both sides to move, and the support rod 8 will drive the cross bar 9 to move. The cross bar 9 will squeeze the cross groove 13 to achieve the effect of squeezing the extrusion block 11. The extrusion block 11 will rotate along the fixing rod 10, and then the anti-slip groove 12 will fit inside the threaded groove, which can limit the rotation of the threaded rod 2 and prevent loosening.

[0022] In the embodiment: the interior of the two chutes are respectively slidably connected to the outer walls of the two cross bars 9, and the interior of the threaded rod 2 is slidably connected to the outer walls of the two extrusion blocks 11;

[0023] Specifically, the interior of the chute is slidably connected to the outer wall of the cross bar 9, which can achieve the effect of squeezing the cross bar 9 downward. The cross bar 9 will drive the squeezing block 11 to rotate along the fixed rod 10, so as to drive the squeezing block 11 to fit the inner wall of the groove, thereby squeezing and limiting the rotation of the threaded rod 2, thereby preventing loosening.

[0024] In the embodiment: the outer walls of the two extrusion blocks 11 are respectively slidably connected to the outer walls of the four support rods 8, and the inner part of the support plate 4 is rotatably connected to the outer wall of the screw rod 6;

[0025] Specifically, the extrusion block 11 is slidably connected to the four support rods 8 to achieve the effect of stably moving the support rods 8, and the support plate 4 is rotatably connected to the screw rod 6 to achieve the effect of stably moving the disc 7 downward;

[0026] In the embodiment: a plurality of anti-slip grooves 12 are arranged in a linear array on the outer wall of the extrusion block 11, and the two extrusion blocks 11 are symmetrically arranged on both sides of the screw rod 6;

[0027] Specifically, the anti-slip grooves 12 are arranged in a linear array on the outer wall of the extrusion block 11, which can play an anti-slip effect and limit the rotation of the threaded rod 2, thereby achieving an anti-slip and anti-loosening effect. The extrusion blocks 11 are symmetrically designed on both sides of the screw rod 6, which can achieve a better extrusion limiting effect.

[0028] In the embodiment: the screw rod 6 is arranged at the axis center position of the threaded rod 2, and a groove is opened inside the engaging block 5;

[0029] Specifically, the screw rod 6 is arranged at the axis of the threaded rod 2, which can more conveniently drive the disc 7 to move downward. The internal part of the engaging block 5 is provided with a groove, which can be conveniently used with a tool to achieve the effect of driving the engaging block 5 to rotate.

[0030] Working principle: First, insert the threaded rod 2 into the bolt hole to be fixed, and the threaded rod 2 rotates to achieve the effect of fastening the parts. To prevent the bolt from loosening under high-speed vibration, the rotating locking block 5 drives the screw rod 6 to rotate, drives the disc 7 to move down, drives the support rods 8 on both sides to move, and drives the cross bar 9 to move. The cross bar 9 will squeeze the cross groove 13 to achieve the effect of squeezing the extrusion block 11. The extrusion block 11 will rotate along the fixed rod 10, and fit the anti-slip groove 12 inside the thread groove, which can achieve the effect of limiting the rotation of the threaded rod 2. Compared with the related art, the anti-loosening bolt with axially offset thread teeth provided by the utility model has the following beneficial effects: it can achieve the effect of preventing loosening.

[0031] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A locking bolt with axially offset thread, comprising a hexagonal block (1), characterized in that: The bottom outer wall of the hexagonal block (1) is fixedly welded with a threaded rod (2), the bottom height of the threaded rod (2) is welded with a cylinder (3), the interior of the hexagonal block (1) is fixedly installed with a support plate (4), the interior of the hexagonal block (1) is rotatably connected with a snap-fit block (5), the bottom of the snap-fit block (5) is fixedly welded with a screw rod (6), the outer wall of the screw rod (6) is threadedly connected with a disc (7), the outer wall of the disc (7) is rotatably connected with four support rods (8), two cross rods (9) are fixedly installed between the four support rods (8), the interior of the threaded rod (2) is fixedly installed with two fixed rods (10), the outer walls of the two fixed rods (10) are both rotatably connected with an extrusion block (11), the outer walls of the two extrusion blocks (11) are both provided with anti-slip grooves (12), and the interiors of the two extrusion blocks (11) are both provided with sliding grooves.

2. The anti-loosening bolt with axially offset thread according to claim 1, characterized in that: The interiors of the two slide grooves are respectively slidably connected to the outer walls of the two cross bars (9), and the interior of the threaded rod (2) is slidably connected to the outer walls of the two extrusion blocks (11).

3. The anti-loosening bolt with axially offset thread according to claim 1, characterized in that: The outer walls of the two extrusion blocks (11) are respectively slidably connected to the outer walls of the four support rods (8), and the interior of the support plate (4) is rotationally connected to the outer wall of the screw rod (6).

4. The anti-loosening bolt with axially offset thread according to claim 1, characterized in that: A plurality of anti-slip grooves (12) are arranged in a linear array on the outer wall of the extrusion block (11), and the two extrusion blocks (11) are symmetrically arranged on both sides of the screw rod (6).

5. The anti-loosening bolt with axially offset thread according to claim 1, characterized in that: The screw rod (6) is arranged at the axis center position of the threaded rod (2), and a groove is provided inside the engaging block (5).

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