CN220956355U - Positive and negative bolt connection anti-loosening combined structure - Google Patents
Positive and negative bolt connection anti-loosening combined structure Download PDFInfo
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- CN220956355U CN220956355U CN202322253866.0U CN202322253866U CN220956355U CN 220956355 U CN220956355 U CN 220956355U CN 202322253866 U CN202322253866 U CN 202322253866U CN 220956355 U CN220956355 U CN 220956355U
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- bolt
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Abstract
The utility model provides a positive and negative bolted connection locking combination structure, a serial communication port, including the bolt pole, the spring washer, first positive nut, the anti-nut of second, the bolt pole includes the bolt head of coaxial arrangement, first positive bolt body and the anti-bolt body of second, first positive screw body diameter is greater than the anti-screw body of second, screw thread phase-match on first positive nut and the first positive screw body, the anti-nut of second and the anti-screw body of second respectively, first positive nut has positive sawtooth structure, the anti-nut of second has reverse sawtooth structure, sawtooth structure lift angle on the first positive nut is greater than the sawtooth structure lift angle of the anti-nut of second, be convenient for install two nut interlock, two sawtooth structures stabilize positive and negative nut locking effect through the interlock.
Description
Technical Field
The invention relates to a positive and negative bolt connection anti-loosening combined structure.
Background
The bolt is a common fastener in mechanical equipment and is used for fastening two parts with through holes, and the bolt is detachable and is widely used for connecting parts connected with the mechanical equipment due to simple structure, but the working environment is complex, such as vibration, shaking, impact and the like, which can cause loosening between the nut and the bolt.
The existing bolt locking method comprises the following steps: firstly, prevent that the nut is not hard up through the mode that carries out spacing to the nut, like spot welding nut, secondly, apply an effort to bolt and nut through the packing ring and prevent not hard up, like spring washer, thirdly, positive and negative nut is through positive and negative nut centering, realizes the interlock, but because the friction effect of two contact surfaces of positive and negative nut is under the load effect such as vibration, impact, the frictional force reduces the interlocking effect gradually and weakens and will produce not hard up, consequently this patent provides a positive and negative bolted connection locking combination structure and solves the locking problem.
Disclosure of utility model
The utility model mainly solves the technical problem of providing a positive and negative bolt connection anti-loosening combined structure, which has a simple structure and realizes the purpose of self-locking by engagement of positive and negative nut saw-tooth structures through the cooperation of a spring washer.
The technical scheme is as follows: the utility model provides a positive and negative bolted connection locking combination structure, a serial communication port, including the bolt pole, the spring washer, first positive nut, the second is anti-nut, the bolt pole includes coaxial arrangement's bolt head, first positive bolt body and second is anti-bolt body, first positive screw body diameter is greater than the second is anti-bolt body, screw thread on first positive nut and the first positive screw body, second is anti-nut and the second is anti-screw body matches respectively, first positive nut has positive sawtooth structure, second is anti-nut has reverse sawtooth structure, two sawtooth structures can realize the interlock, sawtooth structure lift angle on the first positive nut is greater than the sawtooth structure lift angle of second anti-nut.
The using method comprises the following steps: firstly, a bolt rod passes through a bolt hole of a workpiece to be clamped, a bolt head is abutted against one side of the workpiece, then a spring washer is sleeved on the bolt rod at the other side and abutted against the workpiece, secondly, a first positive nut is sleeved on the bolt rod from the bolt rod and is in threaded fit with the first positive screw rod body of the bolt rod, when the first positive nut is abutted against the spring washer and the workpiece, one axial side of the first positive nut exceeds the first positive screw rod body by a certain distance, thirdly, a second negative nut is sleeved on the bolt rod and is in threaded fit with the second negative screw rod body of the bolt rod, when the second negative nut is abutted against the first positive nut, the saw tooth structure cannot be actually meshed, larger pretightening force is needed to be applied to the first positive nut, the spring washer is tightened, an axial space is reserved for the abutment of the second negative nut, after the second negative nut reaches the expected position, the first positive nut is reversely loosened, the saw tooth structure of the first positive nut and the second negative nut is enabled to realize self-locking, and meanwhile, the spring washer is restored to the normal pretightening force.
The beneficial effects are that: the cooperation of the bolt and the nut can be mainly decomposed into two aspects, namely an axial horizontal direction and an axial circumferential direction, and the utility model has the following beneficial effects:
1. According to the positive and negative bolt connection anti-loosening combined structure, after the first positive nut and the second negative nut are meshed under the cooperation of the spring washer, the first positive nut and the second negative nut are opposite to each other in the axial horizontal direction, so that the movement of the first nut in the axial horizontal direction and the movement of the second nut in the axial circumferential direction are limited, and the meshing effect of the first positive nut and the second negative nut in the axial circumferential direction limits the movement of the second nut in the circumferential direction, so that self-locking is realized.
2. After the spring washer is matched to realize the engagement effect of the first positive nut and the second negative nut, the abutting effect of the first positive nut can be kept, so that the vacuum period of engagement between the two nuts caused by the effects of impact, vibration and the like can not occur between the first positive nut and the second negative nut, and the self-locking effect between the nuts is kept.
Drawings
Fig. 1 is a schematic structural view of the present bolt assembled state.
FIG. 2 is a partially enlarged schematic illustration of position I
FIG. 3 is a schematic view of a first positive nut
FIG. 4 is a schematic view of a second counter nut
Detailed Description
Referring to fig. 1, a positive and negative bolt connection anti-loosening combined structure comprises a bolt rod, a spring washer, a first positive nut and a second negative nut, wherein the bolt rod comprises a bolt head, a first positive bolt rod body and a second negative bolt rod body which are coaxially arranged, the diameter of the first positive bolt rod body is larger than that of the second negative bolt rod body, threads on the first positive nut and the first positive bolt rod body as well as threads on the second negative nut and the second negative bolt rod body are respectively matched, the first positive nut is provided with a positive saw tooth structure, the second negative nut is provided with a negative saw tooth structure, the two saw tooth structures can realize occlusion, and the lift angle of the saw tooth structure on the first positive nut is larger than that of the saw tooth structure of the second negative nut.
The using method comprises the following steps: firstly, a bolt rod passes through a bolt hole of a workpiece to be clamped, a bolt head is abutted against one side of the workpiece, then a spring washer is sleeved on the bolt rod at the other side and abutted against the workpiece, secondly, a first positive nut is sleeved on the bolt rod from the bolt rod and is in threaded fit with the first positive screw rod body of the bolt rod, when the first positive nut is abutted against the spring washer and the workpiece, one axial side of the first positive nut exceeds the first positive screw rod body by a certain distance, thirdly, a second negative nut is sleeved on the bolt rod and is in threaded fit with the second negative screw rod body of the bolt rod, when the second negative nut is abutted against the first positive nut, the saw tooth structure can not realize meshing, larger pretightening force is required to be applied to the first positive nut, the spring washer is tightened, an axial space is reserved for the abutment of the second negative nut, after the second negative nut reaches the expected position, the first positive nut is reversely loosened, the saw tooth structure of the first positive nut and the second negative nut is enabled to realize self-locking, and simultaneously the spring washer is restored to the normal pretightening force.
The beneficial effects are that: the cooperation of the bolt and the nut can be mainly decomposed into two aspects, namely an axial horizontal direction and an axial circumferential direction, and the utility model has the following beneficial effects:
1. According to the positive and negative bolt connection anti-loosening combined structure, after the first positive nut and the second negative nut are meshed under the cooperation of the spring washer, the first positive nut and the second negative nut are opposite to each other in the axial horizontal direction, so that the movement of the first nut in the axial horizontal direction and the movement of the second nut in the axial circumferential direction are limited, and the meshing effect of the first positive nut and the second negative nut in the axial circumferential direction limits the movement of the second nut in the circumferential direction, so that self-locking is realized.
2. After the spring washer is matched to realize the engagement effect of the first positive nut and the second negative nut, the abutting effect of the first positive nut can be kept, so that the vacuum period of engagement between the two nuts caused by the effects of impact, vibration and the like can not occur between the first positive nut and the second negative nut, and the self-locking effect between the nuts is kept.
Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (3)
1. The utility model provides a positive and negative bolted connection locking combination structure, a serial communication port, including bolt pole (1), spring washer (4), first positive nut (5), second anti-nut (6), bolt pole (1) are including coaxial bolt head that arranges, first positive bolt body of rod and second anti-bolt body of rod, first positive screw body diameter is greater than the second anti-bolt body of rod, screw thread phase-match on first positive nut (5) and the first positive screw body, second anti-nut (6) and the second anti-screw body respectively, first positive nut (5) have positive sawtooth structure, second anti-nut (6) have reverse sawtooth structure, two sawtooth structures can realize the interlock, sawtooth structure lift angle on first positive nut (5) is greater than the sawtooth structure lift angle of second anti-nut (6).
2. The positive and negative bolt connection anti-loosening combined structure according to claim 1 is characterized in that the saw-tooth structure engagement of the first positive nut (5) and the second negative nut (6) is realized through the spring washer (4), so that the contact surface of the first positive nut (5) and the second negative nut (6) is realized through saw-tooth engagement instead of friction.
3. The positive and negative bolt connection anti-loosening combined structure according to claim 1, wherein the angle of lift of the sawtooth structure on the first positive nut (5) is larger than that of the sawtooth structure of the second negative nut (6), and the engagement of the sawtooth structure is facilitated by the cooperation of the spring washer (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322253866.0U CN220956355U (en) | 2023-08-22 | 2023-08-22 | Positive and negative bolt connection anti-loosening combined structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322253866.0U CN220956355U (en) | 2023-08-22 | 2023-08-22 | Positive and negative bolt connection anti-loosening combined structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220956355U true CN220956355U (en) | 2024-05-14 |
Family
ID=90979074
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322253866.0U Active CN220956355U (en) | 2023-08-22 | 2023-08-22 | Positive and negative bolt connection anti-loosening combined structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220956355U (en) |
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2023
- 2023-08-22 CN CN202322253866.0U patent/CN220956355U/en active Active
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