Combined nut with locking mechanism

Abstract

The utility model relates to the technical field of combined nuts, in particular to a combined nut with a locking mechanism. The combined type nut with the locking mechanism comprises an upper nut body, a lower nut body and a locking bolt, an outer sleeve is arranged at the bottom of the upper nut body, an annular limiting groove is formed in the inner side wall of the outer sleeve, a limiting ring is arranged in the annular limiting groove, and the locking bolt is arranged on the lower nut body. The inner side wall of the limiting ring is provided with an inner hexagonal sleeve. The left side and the right side of the lower nut are each provided with a set of threaded holes in a penetrating mode, and the locking bolts are connected into the threaded holes in a threaded mode. When the upper nut is screwed, the locking bolt is screwed in the threaded hole of the lower nut, so that the third non-slip mat is tightly attached to the external bolt, the lower nut is locked on the external bolt, when the upper nut is screwed, the inner hexagonal sleeve is connected to the outer side of the lower nut in a sleeving mode, and the locking bolt abuts against the threaded hole of the lower nut. Therefore, the screwing reliability of the locking bolt is ensured, and the locking reliability of the lower nut is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of combined nuts, in particular to a combined nut with a locking mechanism. Background Art

[0002] A nut is a cap that is screwed together with a bolt or screw for fastening. It is a component that all manufacturing machinery must use. According to the different materials, it is divided into several major types such as carbon steel, stainless steel, and non-ferrous metals. The nut is a part that tightly connects mechanical equipment. Nuts and bolts of the same specifications can be connected together through the inner thread.

[0003] Most of the existing nuts are only locked by simple threads or reinforced with washers. However, they are prone to loosening after a period of use, which can easily lead to the loosening of the entire device, thereby creating hidden dangers and causing losses. In view of the above situation, technical innovation is carried out based on the existing nuts. Utility Model Content

[0004] The purpose of the utility model is to provide a combined nut with a locking mechanism to solve the problems raised in the above background technology.

[0005] To achieve the above object, the utility model provides the following technical solution: a combined nut with a locking mechanism, comprising:

[0006] An upper nut, a lower nut and a locking bolt, wherein an outer sleeve is provided at the bottom of the upper nut, an annular limiting groove is provided on the inner side wall of the outer sleeve, a limiting ring is provided in the annular limiting groove, and an inner hexagonal sleeve is provided on the inner side wall of the limiting ring, wherein:

[0007] A group of threaded holes are formed through the left and right sides of the lower nut, and the locking bolts are screwed into the threaded holes. A group of third anti-slip pads are provided on the opposite sides of the two groups of locking bolts.

[0008] Preferably, the threaded holes on the left and right sides of the lower nut are countersunk holes, and the opposite sides of the two groups of locking bolts are flush with the left and right sides of the lower nut respectively.

[0009] Preferably, the outer sleeve is located at the outer ring of the hexagonal sleeve, and the outer side wall of the lower nut is in contact with the inner side wall of the hexagonal sleeve.

[0010] Preferably, a first anti-slip pad is provided at the bottom of the outer sleeve, and a second anti-slip pad is provided at the bottom of the lower nut.

[0011] Preferably, the bottom of the outer sleeve is flush with the bottom of the lower nut, and the bottom of the first anti-slip pad is flush with the bottom of the second anti-slip pad.

[0012] Preferably, the size of the internal threaded hole of the upper nut is the same as the specification of the internal threaded hole of the lower nut.

[0013] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0014] The utility model tightens the locking bolt into the threaded hole of the lower nut, so that the third anti-skid pad is closely fitted with the external bolt, so that the lower nut is locked on the external bolt. When the upper nut is tightened, the hexagonal sleeve is sleeved on the outer side of the lower nut, and the locking bolt is pressed against the threaded hole of the lower nut, so as to ensure the tightening reliability of the locking bolt, thereby improving the locking reliability of the lower nut.

[0015] After the lower nut and the upper nut are tightened, the second anti-skid pad and the first anti-skid pad will fit tightly with the surface of the object to be fixed, thereby ensuring the stability of the combined installation of the two sets of bolts and tightening with the external bolts, thereby improving the reliability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of a combined nut with a locking mechanism of the utility model;

[0017] Figure 2 It is a schematic diagram of the structure of the combined nut with a locking mechanism of the utility model after being assembled;

[0018] Figure 3 For this utility model Figure 2 Front cross-sectional view of .

[0019] In the figure: 1, upper nut; 11, outer sleeve; 12, first anti-slip pad; 13, lower nut; 14, second anti-slip pad; 15, locking bolt; 16, third anti-slip pad; 17, hexagon socket sleeve; 18, limit ring. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] See also Figure 1-Figure 3A combined nut with a locking mechanism comprises an upper nut 1, a lower nut 13 and a locking bolt 15. An outer sleeve 11 is provided at the bottom of the upper nut 1. An annular limiting groove is provided on the inner wall of the outer sleeve 11. A limiting ring 18 is rotatably provided in the annular limiting groove. An inner hexagonal sleeve 17 is fixedly provided on the inner wall of the limiting ring 18. A group of threaded holes are provided on both sides of the lower nut 13. The locking bolts 15 are screwed into the threaded holes. A group of third anti-slip pads 16 are fixedly provided on the opposite sides of the two groups of locking bolts 15. The left and right sides of the lower nut 13 The threaded holes are countersunk, and the opposite sides of the two sets of locking bolts 15 are flush with the left and right sides of the lower nut 13 respectively. The outer sleeve 11 is located on the outer ring of the inner hexagonal sleeve 17, and the outer wall of the lower nut 13 fits with the inner wall of the inner hexagonal sleeve 17. The bottom of the outer sleeve 11 is fixedly provided with a first anti-skid pad 12, and the bottom of the lower nut 13 is fixedly provided with a second anti-skid pad 14. After the outer bolt is inserted into the bolt hole on the object to be fixed, it is threadedly connected with the lower nut 13. After the lower nut 13 is tightened, the second anti-skid pad 14 is in contact with the surface of the object to be fixed. The locking bolt 15 is then screwed into the threaded hole of the lower nut 13, so that the third anti-skid pad 16 is tightly fitted with the external bolt, so that the lower nut 13 is locked on the external bolt, and then the upper nut 1 is screwed onto the external bolt, and the inner hexagonal sleeve 17 is sleeved on the outer side of the lower nut 13. At this time, the upper nut 1 is tightened. When the upper nut 1 moves along the external bolt and approaches the surface of the object to be fixed, the inner hexagonal sleeve 17 moves downward on the surface of the lower nut 13 along the movement of the upper nut 1 under the influence of the limiting ring 18. After the nut 1 is tightened, the hexagonal sleeve 17 will be sleeved on the outside of the lower nut 13, and the locking bolt 15 will be pressed against the threaded hole of the lower nut 13, so as to ensure the tightening reliability of the locking bolt 15, thereby improving the locking reliability of the lower nut 13. At the same time, the first anti-slip pad 12 is tightly fitted to the surface of the object to be fixed, the bottom of the outer sleeve 11 is flush with the bottom of the lower nut 13, the bottom of the first anti-slip pad 12 is flush with the bottom of the second anti-slip pad 14, and the size of the internal threaded hole of the upper nut 1 is the same as the specification of the internal threaded hole of the lower nut 13.

[0022] After the outer bolt is inserted into the bolt hole on the object to be fixed, it is threadedly connected with the lower nut 13. After the lower nut 13 is tightened, the second anti-skid pad 14 is closely fitted with the surface of the object to be fixed, and then the locking bolt 15 is tightened in the threaded hole of the lower nut 13, so that the third anti-skid pad 16 is closely fitted with the outer bolt, so that the lower nut 13 is locked on the outer bolt, and then the upper nut 1 is threadedly connected to the outer bolt, and the inner hexagonal sleeve 17 is sleeved on the outer side of the lower nut 13. At this time, the upper nut 1 is tightened. After the nut 1 moves along the external bolt and approaches the surface of the object to be fixed, the hexagonal sleeve 17 will move downward on the surface of the lower nut 13 along the movement of the upper nut 1 under the influence of the limiting ring 18. When the upper nut 1 is tightened, the hexagonal sleeve 17 will be sleeved on the outside of the lower nut 13 and press the locking bolt 15 into the threaded hole of the lower nut 13, so as to ensure the tightening reliability of the locking bolt 15, thereby improving the locking reliability of the lower nut 13. At the same time, the first anti-slip pad 12 is tightly fitted to the surface of the object to be fixed.

Claims

1. A combined nut with a locking mechanism, characterized in that: include: An upper nut (1), a lower nut (13) and a locking bolt (15), wherein an outer sleeve (11) is provided at the bottom of the upper nut (1), an inner wall of the outer sleeve (11) is provided with an annular limiting groove, a limiting ring (18) is provided in the annular limiting groove, and an inner wall of the limiting ring (18) is provided with an inner hexagonal sleeve (17), wherein: A group of threaded holes are formed through the left and right sides of the lower nut (13), and the locking bolts (15) are screwed into the threaded holes. A group of third anti-slip pads (16) are provided on the opposite sides of the two groups of locking bolts (15).

2. The combined nut with a locking mechanism according to claim 1, characterized in that: The threaded holes on the left and right sides of the lower nut (13) are countersunk holes, and the opposite sides of the two groups of locking bolts (15) are flush with the left and right sides of the lower nut (13) respectively.

3. The combined nut with a locking mechanism according to claim 2, characterized in that: The outer sleeve (11) is located at the outer ring of the hexagonal sleeve (17), and the outer side wall of the lower nut (13) is in contact with the inner side wall of the hexagonal sleeve (17).

4. The combined nut with a locking mechanism according to claim 1, characterized in that: A first anti-skid pad (12) is provided at the bottom of the outer sleeve (11), and a second anti-skid pad (14) is provided at the bottom of the lower nut (13).

5. The combined nut with a locking mechanism according to claim 4, characterized in that: The bottom of the outer sleeve (11) is flush with the bottom of the lower nut (13), and the bottom of the first anti-slip pad (12) is flush with the bottom of the second anti-slip pad (14).

6. The combined nut with a locking mechanism according to claim 1, characterized in that: The size of the internal threaded hole of the upper nut (1) is the same as the specification of the internal threaded hole of the lower nut (13).

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