High-strength anti-thread-slipping flange screw

Abstract

The utility model discloses a high-strength anti-thread-slipping flange screw which comprises a screw rod and a nut. An orientation assembly is arranged between the screw rod and the nut; the screw rod comprises a hexagonal head part, a flange gasket and a thread main body; the nut comprises a hexagonal nut and a flange gasket II; the orientation assembly comprises an upper clamping block and a lower clamping block; a first extension plate is arranged on the outer side of the upper clamping block, a second extension plate is arranged on the outer side of the lower clamping block, a sliding rod is arranged on the second extension plate, the upper end of the sliding rod extends out of the first extension plate, and a through hole capable of containing the sliding rod is formed in the first extension plate; a fixing plate is arranged on the outer side of the sliding rod and close to the middle end, and a spring is arranged between the fixing plate and the first extension plate and located on the outer side of the sliding rod. The screw and the nut can vertically correspond through the orientation assembly on the outer side of the bolt, the moving path of the screw is limited, and the screw is not prone to deflection in the thread installation process, so that the phenomenon of thread slipping is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of fasteners, in particular to a flange screw with high-strength anti-slip threads. Background Art

[0002] Flange screws are fasteners used to connect two through-hole parts, typically used in conjunction with nuts. They are widely used because of their large support area to stress area ratio, their ability to withstand higher preloads, and their excellent anti-loosening properties.

[0003] Flange bolts come in a variety of styles, including hexagonal head types, surface colors, and flange types. They are also categorized by the force applied to the connection, including standard and reamed hole types. Reamed hole flange bolts are designed to match the hole size and are used in applications subject to lateral forces. Additionally, there are flange bolts with a hole in the shank to prevent loosening due to vibration, and thin-shank flange bolts suitable for connections subject to variable forces.

[0004] Flange screws are commonly used in flanges. In actual use, due to obstructed vision, the screw is prone to tilt and offset when threaded through the through hole on the flange and connected to the nut, and vertical force cannot be applied. In this case, continuing to apply force will cause the screw to strip, the installation will remain unchanged, work efficiency will be reduced, and economic losses will be caused, which has limitations. Utility Model Content

[0005] The utility model aims to solve the above-mentioned technical problem that due to line of sight obstruction, a screw rod is prone to tilting and deflecting when being threadedly connected with a nut through a through hole on a flange plate, and provides a flange screw with high-strength anti-slip thread.

[0006] In order to solve the above technical problems, the technical solution provided by the utility model is as follows: a flange screw with high-strength anti-slip thread, comprising a screw and a nut; a directional assembly is provided between the screw and the nut; the screw comprises a hexagonal head, a flange gasket, and a threaded body; the nut comprises a hexagonal nut and a second flange gasket;

[0007] The directional assembly includes an upper clamping block and a lower clamping block, the upper clamping block is movably arranged under the flange gasket, and the lower clamping block is movably arranged under the flange gasket 2, and the cross-sections of the upper clamping block and the lower clamping block are both U-shaped; an extension plate 1 is provided on the outer side of the upper clamping block, and an extension plate 2 is provided on the outer side of the lower clamping block, a sliding rod is provided on the extension plate 2, and the extension plate 1 extends from the upper end of the sliding rod, and the extension plate 1 is provided on the extension plate 1. A through hole that can accommodate the sliding rod is provided; a fixed plate is provided on the outer side of the sliding rod and near the middle end, and a spring is provided between the fixed plate and the extension plate 1 and located on the outer side of the sliding rod.

[0008] Furthermore, the opposite sides of the flange gasket and the second flange gasket are provided with anti-slip teeth, and the anti-slip teeth are composed of a plurality of arc-shaped triangular protrusions evenly arranged along the axial direction of the flange gasket and the second flange gasket.

[0009] Furthermore, a cross slot is provided on the hexagonal head.

[0010] Furthermore, the upper clamping block is located outside the threaded body, and the lower clamping block is located outside the hexagonal nut; the inner diameters of the upper clamping block and the lower clamping block are both larger than the maximum outer diameter of the hexagonal nut.

[0011] Furthermore, an extension plate is extended from the upper end of the slide rod and is provided with a limit plate.

[0012] The advantages of this utility model compared with the prior art are:

[0013] The directional component on the outside of the bolt allows the screw and nut to correspond vertically, and limits the movement path of the screw, making it less likely to deflect during thread installation, thereby causing thread slippage;

[0014] The directional components and bolts are not fixedly installed, so it does not affect the standardized production of flange bolts. The directional components can be used repeatedly, which does not increase production costs, improves work efficiency, and reduces the number of screws discarded due to thread stripping. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural diagram of the present utility model.

[0016] Figure 2 It is a structural schematic diagram of the screw and nut of the utility model in an assembled state.

[0017] Figure 3 It is a schematic structural diagram of the directional component of the utility model.

[0018] As shown in the figure: 1. Screw, 2. Nut, 3. Hexagonal head, 4. Flange gasket, 5. Threaded body, 6. Hexagonal nut, 7. Flange gasket 2, 8. Anti-slip teeth, 9. Cross slot, 10. Upper clamping block, 11. Lower clamping block, 12. Extension plate 1, 13. Extension plate 2, 14. Slide rod, 15. Limit plate, 16. Fixed plate, 17. Spring. DETAILED DESCRIPTION

[0019] The present invention will be described in further detail below with reference to the accompanying drawings.

[0020] Example 1, combined with the attached Figure 1 、 2A flange screw with high-strength anti-slip wire includes a screw 1 and a nut 2; the screw 1 includes a hexagonal head 3, a flange gasket 4, and a threaded body 5; the nut 2 includes a hexagonal nut 6 and a flange gasket 7; a cross slot 9 is provided on the hexagonal head 3, and the screw 1 as a whole can be screwed through the cross slot 9 using a plum-shaped screwdriver.

[0021] Combined with attachment Figure 1 、 2 The opposite sides of the flange gasket 4 and the flange gasket 2 7 are provided with anti-slip teeth 8, and the anti-slip teeth 8 are composed of a number of arc-shaped triangular protrusions evenly arranged along the axial direction of the flange gasket 4 and the flange gasket 2 7; the anti-slip teeth 8 can increase the friction between the flange to be connected, thereby improving the connection strength.

[0022] Combined with attachment Figure 1-3 A directional assembly is provided between the screw 1 and the nut 2; the directional assembly includes an upper clamping block 10 and a lower clamping block 11, the upper clamping block 10 is movably arranged under the flange gasket 4, and the lower clamping block 11 is movably arranged under the flange gasket 7, and the cross-sections of the upper clamping block 10 and the lower clamping block 11 are both U-shaped; they can be placed on the outside of the screw 1 and the nut 2, and can also be quickly removed, and the same standard size fasteners can be reused multiple times.

[0023] The upper clamping block 10 is located outside the threaded body 5, and the lower clamping block 11 is located outside the hexagonal nut 6; the inner diameters of the upper clamping block 10 and the lower clamping block 11 are both larger than the maximum outer diameter of the hexagonal nut 6, so that they can be clamped on the outside of the hexagonal nut 6 without forming an obstruction.

[0024] An extension plate 12 is provided on the outside of the upper clamping block 10, and an extension plate 2 13 is provided on the outside of the lower clamping block 11. In actual application, the extension plate 12 and the extension plate 2 13 are arranged longer at one end away from the upper clamping block 10 and the lower clamping block 11, so as to provide a position for fingers to press down during installation, so as to guide the upper clamping block 10; a slide bar 14 is provided on the extension plate 2 13, and the extension plate 12 is extended from the upper end of the slide bar 14. The extension plate 12 is provided with a through hole that can accommodate the slide bar 14, so that the extension plate 12 can slide on the outside of the slide bar 14.

[0025] Combined with attachment Figure 1 、 3 A limit plate 15 is provided on the upper end of the slide rod 14 to extend the extension plate 12, and a fixed plate 16 is provided on the outside of the slide rod 14 and near the middle end. A spring 17 is provided between the fixed plate 16 and the extension plate 12 and on the outside of the slide rod 14; the limit plate 15 can limit the extension plate 12 to prevent the extension plate 12 from falling off from the slide rod 14 when not in use; the upper and lower ends of the spring 17 can also be provided to be fixedly connected to the extension plate 12 and the fixed plate 16 respectively, which can also prevent the extension plate 12 from falling off.

[0026] The working principle of the present invention is as follows: first, place the nut 2 on the outside of the through hole of the flange to be connected, and the lower clamping block 11 is located on the outside of the hexagonal nut 6. The threaded body 5 is clamped into the upper clamping block 10. At this time, press down the extension plate 12 by hand to compress the spring 17. The extension plate 12 drives the upper clamping block 10 to move downward. At the same time, use a fastening screwdriver to tighten it downward through the cross slot on the hexagonal head 3. After use, move the extension plate 12 slightly downward. The extension plate 12 and the extension plate 2 13 are not in compression contact with the flange gasket 4, which is convenient for directly removing the directional component. The spring 17 is reset and can be used repeatedly.

[0027] The above description of the present invention and its embodiments is non-limiting. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if a person skilled in the art is inspired by the above, and does not deviate from the purpose of the present invention, without inventive design, a structure and embodiment similar to the technical solution should fall within the scope of protection of the present invention.

Claims

1. A flange screw with high-strength anti-slip wire, comprising a screw rod (1) and a nut (2); characterized in that: A directional assembly is provided between the screw (1) and the nut (2); the screw (1) comprises a hexagonal head (3), a flange gasket (4), and a threaded body (5); the nut (2) comprises a hexagonal nut (6) and a second flange gasket (7); The directional assembly comprises an upper clamping block (10) and a lower clamping block (11), wherein the upper clamping block (10) is movably arranged below the flange gasket (4), and the lower clamping block (11) is movably arranged below the flange gasket 2 (7), and the cross sections of the upper clamping block (10) and the lower clamping block (11) are both U-shaped; an extension plate 1 (12) is provided on the outer side of the upper clamping block (10), and an extension plate 2 (13) is provided on the outer side of the lower clamping block (11); a slide bar (14) is provided on the extension plate 1 (12), and the upper end of the slide bar (14) extends out of the extension plate 1 (12), and the extension plate 1 (12) is provided with a through hole capable of accommodating the slide bar (14); a fixed plate (16) is provided on the outer side of the slide bar (14) and near the middle end, and a spring (17) is provided between the fixed plate (16) and the extension plate 1 (12) and located on the outer side of the slide bar (14).

2. The flange screw with high-strength anti-slip wire according to claim 1, characterized in that: The opposite sides of the flange gasket (4) and the second flange gasket (7) are both provided with anti-slip teeth (8), and the anti-slip teeth (8) are composed of a plurality of arc-shaped triangular protrusions evenly arranged along the axial direction of the flange gasket (4) and the second flange gasket (7).

3. The flange screw with high-strength anti-slip wire according to claim 1, characterized in that: The hexagonal head (3) is provided with a cross slot (9).

4. The flange screw with high-strength anti-slip wire according to claim 1, characterized in that: The upper clamping block (10) is located outside the threaded body (5), and the lower clamping block (11) is located outside the hexagonal nut (6); the inner diameters of the upper clamping block (10) and the lower clamping block (11) are both larger than the maximum outer diameter of the hexagonal nut (6).

5. The flange screw with high-strength anti-slip wire according to claim 1, characterized in that: An extension plate (12) extends from the upper end of the slide rod (14) and is provided with a limiting plate (15).

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