Nut locking structure for bolt and double-end bolt

Abstract

The utility model relates to the field of nut fixing, in particular to a nut locking structure for a bolt and a stud bolt, which comprises a locking plate and a fixer, the locking plate comprises a strip-shaped plate body, a nut sleeve hole and a fixed sleeve hole, the nut sleeve hole and the fixed sleeve hole are respectively arranged at two ends of the strip-shaped plate body, and the fixer is arranged on the strip-shaped plate body. The fixing device comprises a fixing hole and a fixing bolt, the fixing hole is formed in a workpiece installed through a bolt, and the fixing bolt penetrates through the fixing sleeve hole to be connected into the fixing hole in a screwed mode. By using the nut locking structure, the locking characteristic of the nut is ensured, the nut cannot be loosened due to rotation, and meanwhile, the convenience of daily disassembly and assembly of a workpiece is also considered.

Description

Technical Field

[0001] The utility model relates to the field of nut fixing, in particular to a nut locking structure for bolts and a stud bolt. Background Art

[0002] Nuts are nuts that are screwed together with bolts or screws to tighten. They are a kind of original parts commonly used in all manufacturing machinery connections. Anti-loosening nuts and self-tightening nuts are common fastening anti-loosening nuts, including mechanical anti-loosening, riveting anti-loosening, friction anti-loosening, structural anti-loosening, etc. Mechanical anti-loosening is to use the locking nut stopper to directly limit the relative rotation of the locking nut pair. For example, the use of tooth pins, serial steel wires and stop washers. Since the locking nut stopper has no pre-tightening force, the anti-loosening stopper can only work when the locking nut is loosened to the stop position. Therefore, this method of locking nuts does not prevent loosening in practice but prevents them from falling off.

[0003] Commonly used hexagonal nut locking devices include spring washers, anti-loosening washers, stop washers, steel wires, iron wires, thread locking adhesives, etc. These locking methods are basically used for parts that are not often disassembled. Spring washers can easily cause damage to the workpiece, and long-term use in a vibration environment can easily cause the nut to loosen and fail.

[0004] Therefore, for parts that are frequently disassembled, the locking method of the anti-loosening nut needs to be changed. The problems of low reuse rate of the locking nut, complex locking structure, complicated use process and easy falling off of the anti-loosening nut in the prior art are urgently needed to be solved by those skilled in the art. Summary of the invention

[0005] In view of the problems existing in the prior art, the purpose of the utility model is to provide a locking nut for a bolt which has good loosening effect, is convenient for assembly and disassembly, is simple to use and can be reused.

[0006] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a nut locking structure for a bolt, comprising a locking plate and a fixer, the locking plate comprising a strip plate body, a nut sleeve hole, and a fixing sleeve hole, the nut sleeve hole and the fixing sleeve hole are respectively arranged at both ends of the strip plate body, the fixer comprises a fixing hole and a fixing bolt, the fixing hole is arranged on the workpiece where the bolt is installed, and the fixing bolt passes through the fixing sleeve hole and is screwed into the fixing hole.

[0007] In the above-mentioned nut locking structure for bolts, the inner side of the nut sleeve hole is provided with a wave pattern, and the fixing sleeve hole is an arc-shaped long strip hole with the center pointing to the center of the nut sleeve hole.

[0008] The above-mentioned nut locking structure for bolts, the strip plate body includes a limit plate, an adjustment plate, a rotating shaft, and a locking structure. The fixed sleeve hole is arranged at one end of the limit plate, and the other end of the limit plate is arranged with an arc-shaped first set of hole plates, and the adjustment plate is provided with a rotating hole. One end of the rotating shaft is fixed on the limit plate, and the other end passes through the rotating hole. The adjustment plate is arc-shaped as a whole, and the arcs of the first set of hole plates and the adjustment plate are relatively arranged to form the nut sleeve hole, and the locking structure limits the relative position of the adjustment plate and the first set of hole plates.

[0009] The above-mentioned nut locking structure for bolts, the locking structure includes a first fixed ear plate, a first movable ear plate, and a first locking bolt, the first fixed ear plate is arranged on the far end side of the first hole plate away from the fixed hole, the first movable ear plate is arranged on the far end side of the adjustment plate, the relative position of the first fixed ear plate and the first movable ear plate is provided with a first locking through hole, and the first locking bolt is sleeved in the first locking through hole.

[0010] The above-mentioned nut locking structure for bolts, the locking structure includes a second fixed ear plate, a second movable ear plate, and a second locking bolt, the second fixed ear plate is arranged on the proximal side of the first set of hole plates close to the rotating hole, the second movable ear plate is arranged on the proximal side of the adjustment plate, and a second locking through hole is arranged at the relative position of the second fixed ear plate and the second movable ear plate, and the second locking bolt is sleeved in the second locking through hole.

[0011] A stud bolt comprises a bolt and a nut, wherein the nut is provided with a nut locking structure for the bolt as described in any one of the above items, and the nut sleeve hole is sleeved on the outside of the nut.

[0012] The stud bolt is welded after the nut sleeve hole is sleeved on the nut.

[0013] The stud bolt mentioned above, the nut and the locking plate are formed in one piece.

[0014] The beneficial effect of a nut locking structure for a bolt of the utility model is that by using the nut locking structure, the locking characteristics of the nut are guaranteed, and it will not be loosened due to rotation, while taking into account the convenience of daily disassembly and assembly of the workpiece. By using the nut sleeve hole on the locking plate to directly sleeve on the nut to be locked, and by using the fixer and the fixing sleeve hole on the locking plate to fix it, the nut can be directly fixed, and the fixing effect will not change due to the use environment of the nut. By using a limit plate, an adjustment plate, a rotating shaft, and a locking structure, the inner diameter of the nut sleeve hole can be adjusted at any time according to the size of the nut to meet nuts with different outer diameters. By using a locking structure installed at the far end, it can be used when the outer diameter of the locking nut needs to be equal to or greater than the inner diameter of the nut sleeve hole. By using a locking structure installed at the proximal end, it can be used when the outer diameter of the locking nut needs to be much smaller than the inner diameter of the nut sleeve hole.

[0015] The utility model discloses a stud bolt which can directly fix a nut of the bolt and adjust a specific position to be fixed through a fixing sleeve hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a side view schematic diagram of the overall structure of the nut locking structure of the utility model;

[0017] Figure 2 This is a first schematic diagram of a locking plate structure of the utility model viewed from above;

[0018] Figure 3 This is a second schematic diagram of the locking plate structure of the utility model from a top view;

[0019] Figure 4 This is a third schematic diagram of the locking plate structure of the utility model from top view;

[0020] Figure 5 This is a schematic diagram of the structure of the limit plate of the utility model;

[0021] Figure 6 This is a schematic diagram of the structure of the adjustment plate of the utility model;

[0022] Figure 7 This is a schematic diagram of the nut locking structure of the utility model.

[0023] Explanation of the accompanying drawings: locking plate 10, fixer 20, nut 30, strip plate body 11, nut sleeve hole 12, fixing sleeve hole 13, corrugation 14, fixing bolt 21, workpiece 40, anti-slip gasket 22, limit plate 110, adjustment plate 111, rotating shaft 112, first set of hole plate 113, rotating hole 114, first fixed ear plate 51, first movable ear plate 52, first locking bolt 53, second fixed ear plate 54, second movable ear plate 55, second locking bolt 56, bolt 60. DETAILED DESCRIPTION

[0024] In order to enable those skilled in the art to better understand the technical solution of the present invention, the technical solution of the present invention is described below in conjunction with specific implementation methods and drawings.

[0025] The technical solution aims to solve the problems existing in the prior art such as the low reuse rate of nut locking structures and the inability to universally lock nuts of different sizes. The present invention mainly uses a hexagonal nut locking device with a plum wrench structure to lock the hexagonal nut used to fix the workpiece. At the same time, the tightening adjustment is performed through the arc-shaped ring groove of the hexagonal nut locking device. After the nut is finally tightened and positioned, a hexagonal head bolt and a flat washer are used for secondary locking.

[0026] Example 1

[0027] like Figure 1 , 2 As shown in FIG. 7 , a nut locking structure for a bolt includes a locking plate 10 and a fixer 20 , wherein the locking plate is mainly used to connect the fixer and the nut 30 .

[0028] The locking plate includes a strip plate body 11, a nut sleeve hole 12, and a fixed sleeve hole 13. The nut sleeve hole and the fixed sleeve hole are respectively arranged at the two ends of the strip plate body. The inner side of the nut sleeve hole is provided with a serrated wave pattern 14, presenting a plum blossom structure. By using the serrated wave pattern, it can be clamped at the top corner of the hexagonal nut to prevent the nut from rotating. The nut sleeve hole used in this embodiment is used in conjunction with the nut, and the two correspond one to one. The fixed sleeve hole is an arc-shaped long strip hole with the center of the circle pointing to the center of the circle of the nut sleeve hole. The center of the plum blossom structure and the centers of the two ends of the arc-shaped long strip hole groove form an adjustment angle. After being adjusted in place, it is finally tightly positioned to adjust the rotation angle of the nut at any time.

[0029] The fixer includes a fixing hole and a fixing bolt 21. The fixing hole is set on the workpiece 40 where the bolt is installed. The fixing bolt passes through the fixing sleeve hole and is screwed into the fixing hole. To prevent the fixing bolt from rotating, an anti-skid pad 22 can be used between the fixing bolt and the locking plate. By using the fixing bolt and the locking plate, the nut itself is locked twice, forming a double fixation, improving the fixing effect, ensuring that the nut will not loosen easily during use, and can be smoothly disassembled in the reverse direction, achieving the effectiveness of locking and the convenience of disassembly and assembly.

[0030] Example 2

[0031] The similarities between this embodiment and the above embodiment will not be repeated here. The difference is that the nut sleeve hole on the locking plate can be adjusted according to different sizes of nuts.

[0032] like Figure 3 , 5As shown in , 6, the strip plate body includes a limit plate 110, an adjustment plate 111, a rotating shaft 112, and a locking structure 50. A fixed sleeve hole is set at one end of the limit plate, and an arc-shaped first set of orifice plates 113 is set at the other end of the limit plate. A rotating hole 114 is set on the adjustment plate. One end of the rotating shaft is fixed on the limit plate, and the other end passes through the rotating hole. The adjustment plate is arc-shaped as a whole. The arcs of the first set of orifice plates and the adjustment plate are relatively arranged to form a nut sleeve hole. The locking structure limits the relative position of the adjustment plate and the first set of orifice plates.

[0033] The locking structure includes a first fixed ear plate 51, a first movable ear plate 52, and a first locking bolt 53. The first locking bolt is provided with a matching first locking nut. The first fixed ear plate is arranged on the far side of the first hole plate away from the fixed hole. The first movable ear plate is arranged on the far side of the adjustment plate. A first locking through hole is arranged at the relative position of the first fixed ear plate and the first movable ear plate, and the first locking bolt is sleeved in the first locking through hole.

[0034] By using a locking structure arranged at the distal end, when the nut and the nut sleeve hole are the same size or the nut is larger than the size of the nut sleeve hole, the distal locking structure can be used to better wrap the nut around, thereby achieving the purpose of locking the nut.

[0035] Example 3

[0036] The similarities between this embodiment and the above embodiment will not be described in detail, and the difference lies in the different locking structures.

[0037] like Figure 4 As shown, the locking structure includes a second fixed ear plate 54, a second movable ear plate 55, and a second locking bolt 56. The second locking bolt is provided with a matching second locking nut. The second fixed ear plate is arranged on the proximal side of the first set of hole plates near the rotating hole, and the second movable ear plate is arranged on the proximal side of the adjustment plate. A second locking through hole is arranged at the relative position of the second fixed ear plate and the second movable ear plate, and the second locking bolt is sleeved in the second locking through hole.

[0038] By using the locking structure set at the proximal end, when the diameter of the locking nut is much smaller than the diameter of the nut sleeve hole, the adjustment plate and the limit plate are placed crosswise, and then the rotating hole on the adjustment plate is sleeved on the outside of the rotating shaft. After the nut sleeve hole is sleeved on the nut, the proximal locking structure is used to lock the nut to wrap the nut.

[0039] Example 4

[0040] The similarities between this embodiment and the above-mentioned embodiment will not be described in detail, and the usage scenarios of the nut locking structure will be mainly described.

[0041] Specifically, Figure 7As shown, a stud bolt comprises a bolt 60 and a nut, wherein the nut is provided with a nut locking structure for the bolt as described in any one of the above items, and the nut sleeve hole is sleeved on the outer side of the nut.

[0042] For ease of use, the nut sleeve hole is sleeved on the nut and then welded. The nut and the locking plate can also be formed in one piece, and one end of the locking plate is set to a nut structure.

[0043] Similarly, the adjustable nut locking structure described in Examples 2-3 can also be used on the stud bolt described in this embodiment. In this case, the nut and the locking plate are not an integral structure.

[0044] The above embodiments are only for illustrating the structural concept and features of the utility model, and their purpose is to enable ordinary technicians in the field to understand the content of the utility model and implement it accordingly, and they cannot be used to limit the protection scope of the utility model. Any equivalent changes or modifications made according to the essence of the content of the utility model should be included in the protection scope of the utility model.

Claims

1. A nut locking structure for a bolt, characterized in that: It includes a locking plate and a fixer. The locking plate includes a strip plate body, a nut sleeve hole, and a fixing sleeve hole. The nut sleeve hole and the fixing sleeve hole are respectively arranged at both ends of the strip plate body. The fixer includes a fixing hole and a fixing bolt. The fixing hole is arranged on a workpiece where the bolt is installed. The fixing bolt passes through the fixing sleeve hole and is screwed into the fixing hole.

2. The nut locking structure for a bolt according to claim 1, characterized in that: The inner side of the nut sleeve hole is provided with wave patterns, and the fixing sleeve hole is an arc-shaped long strip hole with the center of the circle pointing to the center of the nut sleeve hole.

3. The nut locking structure for a bolt according to claim 2, characterized in that: The strip plate body includes a limit plate, an adjustment plate, a rotating shaft, and a locking structure. The fixed sleeve hole is set at one end of the limit plate, and the other end of the limit plate is set with an arc-shaped first set of hole plates. The adjustment plate is provided with a rotating hole. One end of the rotating shaft is fixed to the limit plate, and the other end passes through the rotating hole. The adjustment plate is arc-shaped as a whole. The arcs of the first set of hole plates and the adjustment plate are relatively arranged to form the nut sleeve hole. The locking structure limits the relative position of the adjustment plate and the first set of hole plates.

4. The nut locking structure for a bolt according to claim 3, characterized in that: The locking structure includes a first fixed ear plate, a first movable ear plate, and a first locking bolt. The first fixed ear plate is arranged on the far end side of the first hole plate away from the fixed hole, the first movable ear plate is arranged on the far end side of the adjustment plate, and a first locking through hole is arranged at the relative position of the first fixed ear plate and the first movable ear plate, and the first locking bolt is sleeved in the first locking through hole.

5. The nut locking structure for a bolt according to claim 3, characterized in that: The locking structure includes a second fixed ear plate, a second movable ear plate, and a second locking bolt. The second fixed ear plate is arranged on the proximal side of the first hole plate near the rotating hole, and the second movable ear plate is arranged on the proximal side of the adjustment plate. A second locking through hole is arranged at the relative position of the second fixed ear plate and the second movable ear plate, and the second locking bolt is sleeved in the second locking through hole.

6. A stud bolt, comprising a bolt and a nut, characterized in that: The nut is provided with a nut locking structure for a bolt as described in any one of claims 1 to 2, and the nut sleeve hole is sleeved on the outside of the nut.

7. The stud bolt according to claim 6, characterized in that: The nut sleeve hole is sleeved on the nut and then welded.

8. The stud bolt according to claim 6, characterized in that: The nut and the locking plate are integrally formed.

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