Double-nut anti-loose connecting device

Abstract

The utility model discloses a double nut anti-loose connecting device, including bolt main part and upper nut, the outside of upper nut is provided with the fixed structure, the fixed structure includes lower nut, fixed groove, locating groove, limit rod and horizontal nut, the lower nut with bolt main part thread connection, the fixed groove passes through the bolt main part surface, the locating groove passes through the bolt main part surface, the limit rod passes through the locating groove, and the horizontal nut passes through the locating groove. The positioning grooves penetrate through the two ends of the lower nut, the limiting rods penetrate through the positioning grooves and the fixing grooves, the horizontal nuts are in threaded connection with the two ends of the limiting rods, and the lower nut is fixed to the surface of the threaded rod in the horizontal direction through the limiting rods and the horizontal nuts to prevent loosening and sliding.

Description

Technical Field

[0001] The utility model relates to the technical field of bolts, in particular to a double-nut anti-loosening connection device. Background Art

[0002] Bolt: A mechanical part, a cylindrical, threaded fastener that fits in a nut. Composed of a head and a shank (a cylindrical body with external threads), these fasteners, when used with a nut, are used to securely connect two parts with through-holes. This type of connection is called a bolted connection. Removing the nut from the bolt allows the two parts to separate, making bolted connections removable.

[0003] Currently, double nuts can be used to prevent bolts from loosening during fastening. This means two nuts are used to secure the bottom of the bolt. However, double nuts can lead to unstable connections at the bottom, shortening the bolt's service life. Utility Model Content

[0004] (1) Technical problems solved

[0005] In view of the shortcomings of the existing technology, the present invention provides a double-nut anti-loosening connection device.

[0006] (2) Technical solution

[0007] In order to achieve the above purposes, the above technical purposes of the present invention are achieved through the following technical solutions: a double-nut anti-loosening connection device, comprising a bolt body and an upper nut, a fixing structure being provided on the outside of the upper nut, the fixing structure comprising a lower nut, a fixing groove, a positioning groove, a limiting rod and a horizontal nut, the lower nut being threadedly connected to the bolt body, the fixing groove being penetrated through the surface of the bolt body, the positioning groove being penetrated through both ends of the lower nut, the limiting rod passing through the positioning groove and the fixing groove, and the horizontal nut being threadedly connected to both ends of the limiting rod.

[0008] Preferably, a connecting groove is provided on one side of the upper nut, and a connecting ring is fixedly connected to the top of the lower nut, and the connecting ring is rotatably connected to the connecting groove.

[0009] Preferably, the bolt body includes a threaded rod and a nut, the nut is fixedly connected to the threaded rod, the threaded rod is threadedly connected to the lower nut, and the threaded rod is threadedly connected to the upper nut.

[0010] Preferably, a driving groove is provided at the center of the nut, and a driving thread is provided on the inner wall of the driving groove.

[0011] Preferably, a gasket is provided between the upper nut and the nut, and the threaded rod passes through the gasket.

[0012] Preferably, a lubrication groove is provided in the threaded rod, and the lubrication groove is connected to the driving groove.

[0013] (3) Beneficial effects

[0014] The utility model provides a double nut anti-loosening connection device, which has the following beneficial effects:

[0015] 1. Fix the lower nut horizontally on the surface of the threaded rod through the limit rod and horizontal nut to prevent it from loosening and slipping. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A perspective view of an embodiment of the utility model;

[0017] Figure 2 Provide a schematic diagram for the fixed slot;

[0018] Figure 3 for Figure 1 Enlarged view of area A in the middle;

[0019] Figure 4 This is a schematic diagram of the connecting ring installation.

[0020] Figure markings: 1. upper nut; 2. lower nut; 3. fixing groove; 4. positioning groove; 5. limiting rod; 6. horizontal nut; 7. connecting groove; 8. connecting ring; 9. threaded rod; 10. nut; 11. driving groove; 12. gasket. DETAILED DESCRIPTION

[0021] The following description is merely a preferred embodiment of the present invention, and the scope of protection is not limited to this embodiment. All technical solutions based on the principles of the present invention should be included in the scope of protection of the present invention. It should also be noted that improvements and modifications that do not depart from the principles of the present invention by ordinary skill in the art should also be considered within the scope of protection of the present invention.

[0022] As shown in the figure, a double-nut anti-loosening connection device includes a bolt body and an upper nut 1. The bolt body includes a threaded rod 9 and a nut 10, the nut 10 is fixedly connected to the threaded rod 9, the threaded rod 9 is threadedly connected to the lower nut 2, and the threaded rod 9 is threadedly connected to the upper nut 1. A drive groove 11 is provided in the center of the nut 10, and a drive thread is provided on the inner wall of the drive groove 11. A gasket 12 is provided between the upper nut 1 and the nut 10, and the threaded rod 9 passes through the gasket 12. The threaded rod 9 passes through the upper nut 1 and fixes the fixed part in the gasket 12. After the fixation is completed, the lower nut 2 is rotated upward toward the bottom of the threaded rod 9 so that the connecting ring 8 is inserted into the connecting groove 7.

[0023] A fixing structure is provided on the outside of the upper nut 1, and the fixing structure includes a lower nut 2, a fixing groove 3, a positioning groove 4, a limiting rod 5 and a horizontal nut 6. The lower nut 2 is threadedly connected to the bolt body, the fixing groove 3 is penetrated through the surface of the bolt body, the positioning groove 4 is penetrated through both ends of the lower nut 2, the limiting rod 5 passes through the positioning groove 4 and the fixing groove 3, and the horizontal nut 6 is threadedly connected to both ends of the limiting rod 5. A connecting groove 7 is provided on one side of the upper nut 1, and a connecting ring 8 is fixedly connected to the top of the lower nut 2, and the connecting ring 8 is rotatably connected to the connecting groove 7. A lubrication groove is provided in the threaded rod 9, and the lubrication groove is connected to the drive groove 11. After the limiting rod 5 passes through the positioning groove 4 and the fixing groove 3, both ends are limited by the horizontal nuts 6 to prevent the lower nut 2 from slipping after being loosened.

[0024] Working Principle: Threaded rod 9 passes through upper nut 1, securing the fixture within gasket 12. Once secured, lower nut 2 is rotated upward toward the base of threaded rod 9, inserting connecting ring 8 into connecting groove 7. After limiting rod 5 passes through positioning groove 4 and fixing groove 3, horizontal nuts 6 are used to hold both ends in place, preventing lower nut 2 from slipping if loosened.

[0025] In summary, the lower nut 2 is fixed horizontally on the surface of the threaded rod 9 through the limiting rod 5 and the horizontal nut 6 to prevent loosening and sliding.

Claims

1. A double nut anti-loosening connection device, comprising a bolt body and an upper nut (1), characterized in that: A fixing structure is provided on the outer side of the upper nut (1), and the fixing structure comprises a lower nut (2), a fixing groove (3), a positioning groove (4), a limiting rod (5) and a horizontal nut (6); the lower nut (2) is threadedly connected to the bolt body; the fixing groove (3) is provided on the surface of the bolt body; the positioning groove (4) is provided at both ends of the lower nut (2); the limiting rod (5) passes through the positioning groove (4) and the fixing groove (3); and the horizontal nut (6) is threadedly connected to both ends of the limiting rod (5).

2. A double nut anti-loosening connection device according to claim 1, characterized in that: A connecting groove (7) is provided on one side of the upper nut (1), and a connecting ring (8) is fixedly connected to the top of the lower nut (2), and the connecting ring (8) is rotatably connected to the connecting groove (7).

3. A double nut anti-loosening connection device according to claim 2, characterized in that: The bolt body comprises a threaded rod (9) and a nut (10), wherein the nut (10) is fixedly connected to the threaded rod (9), the threaded rod (9) is threadedly connected to the lower nut (2), and the threaded rod (9) is threadedly connected to the upper nut (1).

4. A double nut anti-loosening connection device according to claim 3, characterized in that: A driving groove (11) is provided at the center of the nut (10), and a driving thread is provided on the inner wall of the driving groove (11).

5. A double nut anti-loosening connection device according to claim 4, characterized in that: A washer (12) is provided between the upper nut (1) and the nut (10), and the threaded rod (9) passes through the washer (12).

6. A double nut anti-loosening connection device according to claim 5, characterized in that: A lubrication groove is provided in the threaded rod (9), and the lubrication groove is connected to the driving groove (11).

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