CN209875676U - Bolt self-locking anti-loosening structure - Google Patents
Bolt self-locking anti-loosening structure Download PDFInfo
- Publication number
- CN209875676U CN209875676U CN201920623209.1U CN201920623209U CN209875676U CN 209875676 U CN209875676 U CN 209875676U CN 201920623209 U CN201920623209 U CN 201920623209U CN 209875676 U CN209875676 U CN 209875676U
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- Prior art keywords
- loosening
- bolt
- locking
- wedge
- teeth
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- 238000000034 method Methods 0.000 abstract description 5
- 230000000694 effects Effects 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 230000001360 synchronised effect Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- Bolts, Nuts, And Washers (AREA)
Abstract
The utility model discloses a bolt auto-lock anti loosening structure, a serial communication port bolt auto-lock anti loosening structure includes: the locking bolt, locknut, locking lock ring and spring washer. The thread section of the anti-loosening bolt is provided with a spiral anti-loosening groove, the anti-loosening locking ring is provided with an anti-loosening convex tooth and a plurality of wedge-shaped anti-loosening teeth, and the anti-loosening nut is provided with a plurality of wedge-shaped anti-loosening teeth; the spring washer and the anti-loosening locking ring are sequentially installed on the thread section of the anti-loosening bolt, the anti-loosening nut is screwed into the anti-loosening bolt, the anti-loosening nut and the wedge-shaped anti-loosening teeth on the anti-loosening locking ring are identical in structural specification and meshed with each other, and the anti-loosening convex teeth on the anti-loosening locking ring are embedded into the spiral anti-loosening grooves. The utility model discloses bolt auto-lock locking method can prevent bolt and nut's not hard up, locks bolt and nut's state at invariable, effectual within range with the pretension control of bolt effectively.
Description
Technical Field
The utility model relates to the field of machinary, be applicable to and prevent to make the not hard up auto-lock check bolt structure that leads to the bolt tightening inefficacy of fastener bolt because the vibration.
Background
The anti-loosening bolt is mainly used for controlling loosening and failure of a connecting part which runs under the condition of a vibration state, and particularly needs to take measures to prevent the normal running of the mechanical connecting part from being influenced by the loosening of the part in mechanical equipment such as mining machinery and the like under the vibration working state. The current common fastener anti-loosening methods generally include non-detachable anti-loosening solutions and friction-increasing anti-loosening solutions. The non-detachable anti-loosening scheme adopts modes such as spot riveting and welding to change detachable threaded connection into non-detachable threaded connection. In the non-detachable anti-loosening scheme, the fastener cannot be reused, is troublesome to operate, and is often used in certain important occasions requiring high anti-loosening performance and not needing to be detached. The anti-loosening scheme for increasing the friction force achieves the anti-loosening purpose by increasing the friction force between the threads or between the bolt head and the end surface of the nut. The locking scheme of increase frictional force does not receive the restriction in space, can dismantle repeatedly, but the reliability is relatively poor, after working for a certain time, can reduce locking effect because of reasons such as vibration. There is a need to design a connecting part locking component with a function of controlling loosening so as to ensure continuous and normal operation of a machine running under a vibration state. Therefore, how to realize a bolt fastening anti-loosening structure and a bolt fastening anti-loosening method which have good anti-loosening effect and relatively simple structure is a problem which needs to be solved urgently at present.
Disclosure of Invention
An object of the utility model is to provide a bolt auto-lock anti loosening structure, it is comparatively effective to control locking ability, it is comparatively convenient to use.
In order to realize the purpose, the utility model discloses the technical scheme who adopts is: the utility model provides a bolt auto-lock anti loosening structure which characterized in that bolt auto-lock anti loosening structure includes: the locking bolt, locknut, locking lock ring and spring washer. The spring washer, the anti-loosening locking ring and the anti-loosening nut are sequentially arranged on the thread section of the anti-loosening bolt.
The thread section of the anti-loosening bolt is provided with a spiral anti-loosening groove which penetrates through the thread section of the whole anti-loosening bolt.
The bottom of locknut and locking ring contact is provided with a plurality of wedge locking teeth, can adjust its quantity according to adapting unit's pretightning force control accuracy requirement, requires the higher adapting unit of control accuracy to the pretightning force and can suitably increase wedge locking tooth quantity, otherwise can suitably reduce wedge locking tooth quantity.
Locking convex teeth are arranged on the inner side of a central circular hole of the locking ring, a plurality of wedge-shaped locking teeth are arranged on the upper surface of the locking ring in contact with the locknut, and the bottom of the locking ring is of a planar structure.
The locking convex teeth of the locking ring are embedded into the spiral locking grooves of the locking bolt, and the two surfaces of the locking ring and the locking nut which are contacted with each other are respectively provided with wedge-shaped locking tooth structures with the same specification which can be meshed with each other.
Furthermore, the lead angle of the spiral anti-loosening groove is larger than that of the thread section of the anti-loosening bolt; the width of the spiral anti-loosening groove is not more than 1/2 of the nominal diameter of the anti-loosening bolt; the depth of the spiral anti-loosening groove is not more than 1/5 of the nominal diameter of the anti-loosening bolt.
Furthermore, the spiral anti-loosening grooves arranged in the thread sections of the anti-loosening bolts can be arranged in a plurality of the spiral anti-loosening grooves according to the pre-tightening force control requirement of the connecting part, and when the number of the spiral anti-loosening grooves is more than one, the spiral anti-loosening grooves are distributed in the thread sections of the anti-loosening bolts at equal intervals at equal lead angles, namely, the spiral anti-loosening grooves are distributed in a rotational symmetry mode by taking the axis of the anti-loosening bolt as a.
Further, the cross section of the wedge-shaped anti-loosening teeth is a right-angled triangle.
Further, the height of the wedge-shaped locking tooth is not more than the thickness of the spring washer.
Furthermore, the thickness of the anti-loosening convex teeth arranged in the central circular hole of the anti-loosening locking ring is not smaller than the thread pitch of the anti-loosening bolt, the number of the anti-loosening convex teeth is not more than the number of the spiral anti-loosening grooves, and the spiral anti-loosening grooves can be embedded.
The utility model has the advantages as follows:
1. the wedge-shaped anti-loosening teeth are adopted for loosening prevention of the bolt, so that the pressing force applied to the connecting part can be effectively controlled, and the constant pressing force can be controlled within an effective range.
2. The locking convex tooth of locking lock ring imbeds in the spiral locking recess, can ensure that locking lock ring and locknut's permanent meshing makes the bolt locking not hard up.
3. The simple operation when part installation, maintenance and maintenance make it drop from locknut through opening spring washer opening, and then makes locknut and locking ring break away from, makes the anticlockwise synchronous mechanism of intermeshing's wedge lock tooth structure inefficacy, and the locknut locking is removed to convenient to detach.
To sum up, the utility model discloses a bolt auto-lock anti loosening structure and method can make the adapting unit who moves under the vibration state effectively connect and safe normal work at invariable, effective within range with bolt pretightning force control, can overcome current various anti loosening structure's not enough, and locking effectual, the cost of manufacture is low, and its installation, dismantlement etc. maintain the maintenance operation comparatively convenient, have good application prospect.
Drawings
Fig. 1 is a schematic structural view of the bolt self-locking anti-loosening structure of the invention.
Fig. 2 is a plan view of the check bolt.
Fig. 3 is a plan view of the check bolt.
Fig. 4 is a plan view of the locknut.
Fig. 5 is a plan view of the locknut.
Fig. 6 is a bottom view of the locknut.
FIG. 7 is a plan view of the anti-loosening locking ring.
FIG. 8 is a top view of the anti-loosening locking ring.
Fig. 9 is a bottom view of the anti-loosening locking ring.
FIG. 10 is a cross-sectional view of the anti-loosening locking ring.
Fig. 11 is a plan view of the spring washer.
The parts numbers in the figures are as follows
A lock bolt 1.
A spiral anti-loosening groove 1-1 and an external thread 1-2 of an anti-loosening bolt.
And a locknut 2.
Wedge-shaped lockteeth 2-1 of the locknut and internal threads 2-2 of the locknut.
A locking ring 3.
The locking ring comprises wedge-shaped locking teeth 3-1, locking convex teeth 3-2 and a central circular hole 3-3.
A spring washer 4.
Detailed Description
The following description of the embodiments of the present invention with reference to the drawings is intended to explain the general inventive concept and should not be construed as limiting the invention. The attached drawings take the right-handed hexagon bolt and nut, a single spiral anti-loosening groove, a single anti-loosening convex tooth, a spiral anti-loosening groove tooth bottom and an anti-loosening convex tooth crest which are respectively in the shape of circular arcs as an example for explanation.
Fig. 1 shows a schematic diagram of a self-locking anti-loosening structure of a bolt, which comprises an anti-loosening bolt 1, an anti-loosening nut 2, an anti-loosening locking ring 3 and a spring washer 4.
The anti-loosening bolt 1 is provided with a spiral anti-loosening groove 1-1, the spiral anti-loosening groove 1-1 penetrates through the thread section of the anti-loosening bolt 1, the bottom of the cross section of the spiral anti-loosening groove 1-1 is arc-shaped, and the lead angle of the spiral anti-loosening groove 1-1 is larger than that of the thread of the anti-loosening bolt 1.
The bottom of the locknut 2 is provided with a plurality of wedge-shaped lockteeth 2-1, the number of the wedge-shaped lockteeth can be adjusted according to the pretightening force control precision requirement of the connecting part, the number of the wedge-shaped lockteeth 2-1 can be properly increased for the connecting part with higher pretightening force control precision requirement, and otherwise, the number of the wedge-shaped lockteeth can be properly reduced.
The inner side of a central circular hole of the anti-loosening locking ring 3 is provided with anti-loosening convex teeth 3-2, the upper surface of the anti-loosening locking ring, which is in contact with the anti-loosening nut, is provided with a plurality of wedge-shaped anti-loosening teeth 3-1, and the bottom of the anti-loosening locking ring is of a planar structure.
The spring washer 4, the anti-loosening locking ring 3 and the anti-loosening nut 2 are sequentially installed on the thread section of the anti-loosening bolt 1, anti-loosening convex teeth 3-2 of the anti-loosening locking ring 3 are embedded into the spiral anti-loosening grooves 1-1, the two surfaces of the anti-loosening locking ring 3, which are in mutual contact with the anti-loosening nut 2, are respectively provided with wedge-shaped anti-loosening teeth which have the same structural specification and can be meshed with each other, the wedge-shaped anti-loosening teeth have the effects that the anti-loosening nut 2 is screwed into the anti-loosening locking ring 3 in the clockwise direction to perform asynchronous motion, and the anti-loosening nut.
The lead angle of the spiral anti-loosening groove 1-1 is larger than that of the thread of the anti-loosening bolt 1, when the anti-loosening nut rotates anticlockwise and becomes loose, the anti-loosening locking ring 3 is forced to rotate synchronously and axial displacement is larger than that of the anti-loosening nut 2 under the action of the spiral anti-loosening groove 1-1 through a synchronous mechanism formed by meshing of wedge-shaped anti-loosening teeth, and the anti-loosening nut 2 and the anti-loosening locking ring 3 are forced to extrude friction force of each other to increase and self-lock.
Further, the width d1 of the spiral anti-loose groove 1-1 is not more than 1/2 of the nominal diameter of the anti-loose bolt 1; the depth h1 of the spiral anti-loosening groove 1-1 is not more than 1/5 of the nominal diameter of the anti-loosening bolt 1.
Further, the cross section of the wedge-shaped anti-loosening teeth 2-1 is a right-angled triangle.
Further, the height h3 of the wedge-shaped locking tooth 3-1 is not more than the thickness d4 of the spring washer 4.
Further, the thickness d3 of the locking convex tooth arranged in the central circular hole of the locking ring 3 is not less than the thread pitch of the locking bolt 1.
The utility model discloses implementation method step as follows:
1. the lockbolt 1 is inserted into a desired connecting member.
2. The spring washer 4 is sleeved into the check bolt 1.
3. The anti-loose convex teeth 3-2 of the anti-loose locking ring 3 are embedded into the spiral anti-loose grooves 1-1 and screwed into the anti-loose bolt 1.
4. And screwing the locknut 2 into the lockbolt 1, and screwing and approaching the torque required by the design. Therefore, the aim of fixing the locknut 2 to ensure that the connecting part continuously, effectively and normally works in a vibration state can be achieved.
The locknut 2 and the locking ring 3 are separated by opening the spring washer 4 to enable the locknut to fall off from the lockbolt, the anticlockwise synchronous mechanism of the mutual meshing of the wedge-shaped lockteeth 2-1 and the wedge-shaped lockteeth 3-1 fails, and the locknut is unlocked so as to be convenient to disassemble.
The number of the wedge-shaped anti-loosening teeth 2-1 and the wedge-shaped anti-loosening teeth 3-1 on the anti-loosening nut 2 and the anti-loosening locking ring 3 can be adjusted according to the pre-tightening force control precision requirement of the connecting parts, the number of the connecting parts with higher pre-tightening force control precision can be properly increased, and otherwise, the number of the wedge-shaped anti-loosening teeth can be properly reduced.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (6)
1. The utility model provides a bolt auto-lock anti loosening structure which characterized in that bolt auto-lock anti loosening structure includes:
a lockbolt, a locknut, a lockwasher, a spring washer,
the thread section of the anti-loosening bolt is provided with a spiral anti-loosening groove, the spiral anti-loosening groove penetrates through the thread section of the anti-loosening bolt, and the lead angle of the spiral anti-loosening groove is larger than that of the anti-loosening bolt;
the bottom of the locknut, which is in contact with the anti-loosening locking ring, is provided with a plurality of wedge-shaped anti-loosening teeth, the number of the wedge-shaped anti-loosening teeth can be adjusted according to the pre-tightening force control precision requirement of the connecting part, the number of the wedge-shaped anti-loosening teeth can be properly increased for the connecting part with higher pre-tightening force requirement control precision, and otherwise, the number of the wedge-shaped anti-loosening;
the inner side of a central circular hole of the anti-loosening locking ring is provided with anti-loosening convex teeth, the upper surface of the anti-loosening locking ring, which is in contact with the anti-loosening nut, is provided with a plurality of wedge-shaped anti-loosening teeth, and the bottom of the anti-loosening locking ring is of a planar structure;
the spring washer, the anti-loosening locking ring and the anti-loosening nut are sequentially installed on the thread section of the anti-loosening bolt, the anti-loosening convex teeth of the anti-loosening locking ring are embedded into the spiral anti-loosening grooves, and two surfaces, which are in contact with each other, of the anti-loosening locking ring and the anti-loosening nut are respectively provided with wedge-shaped anti-loosening tooth structures with the same specification and can be meshed with each other.
2. The bolt self-locking anti-loosening structure according to claim 1, characterized in that: the screw thread section of the anti-loosening bolt is provided with a plurality of screw anti-loosening grooves according to the pre-tightening force control requirement of the connecting part, when the number of the screw anti-loosening grooves is more than one, the screw thread sections are distributed on the anti-loosening bolt at equal intervals of lead angles, namely, the screw thread sections are distributed in a rotational symmetry mode by taking the axis of the anti-loosening bolt as a fixed point.
3. The bolt self-locking anti-loosening structure according to claim 2, characterized in that: the width of the spiral anti-loosening groove is not more than 1/2 of the nominal diameter of the anti-loosening bolt; the depth of the spiral anti-loosening groove is not more than 1/5 of the nominal diameter of the anti-loosening bolt.
4. The bolt self-locking anti-loosening structure according to claim 1, characterized in that: the cross section of the wedge-shaped anti-loosening teeth is a right-angled triangle.
5. The bolt self-locking anti-loosening structure according to claim 4, wherein: the height of the wedge-shaped anti-loosening teeth is not larger than the thickness of the spring washer.
6. The bolt self-locking anti-loosening structure according to claim 1, characterized in that: the thickness of the anti-loosening convex teeth arranged in the central circular hole of the anti-loosening locking ring is not smaller than the thread pitch of the anti-loosening bolt threads, the number of the anti-loosening convex teeth is not more than that of the spiral anti-loosening grooves, and the anti-loosening grooves can be embedded into the corresponding spiral anti-loosening grooves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920623209.1U CN209875676U (en) | 2019-05-05 | 2019-05-05 | Bolt self-locking anti-loosening structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920623209.1U CN209875676U (en) | 2019-05-05 | 2019-05-05 | Bolt self-locking anti-loosening structure |
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| Publication Number | Publication Date |
|---|---|
| CN209875676U true CN209875676U (en) | 2019-12-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920623209.1U Expired - Fee Related CN209875676U (en) | 2019-05-05 | 2019-05-05 | Bolt self-locking anti-loosening structure |
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| Country | Link |
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| CN (1) | CN209875676U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111237539A (en) * | 2020-01-20 | 2020-06-05 | 重庆川仪调节阀有限公司 | Valve rod and valve plug connecting structure and assembling method |
| CN112444455A (en) * | 2020-11-10 | 2021-03-05 | 中铁隆昌铁路器材有限公司 | Coarse-pitch embedded sleeve anti-loosening anti-pulling force test device and method |
| CN113217517A (en) * | 2021-04-22 | 2021-08-06 | 吕贵刚 | Double-pad anti-loose bolt |
| CN117526144A (en) * | 2024-01-08 | 2024-02-06 | 宁波天安智能电网科技股份有限公司 | Prefabricated cabin type transformer substation |
-
2019
- 2019-05-05 CN CN201920623209.1U patent/CN209875676U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111237539A (en) * | 2020-01-20 | 2020-06-05 | 重庆川仪调节阀有限公司 | Valve rod and valve plug connecting structure and assembling method |
| CN112444455A (en) * | 2020-11-10 | 2021-03-05 | 中铁隆昌铁路器材有限公司 | Coarse-pitch embedded sleeve anti-loosening anti-pulling force test device and method |
| CN113217517A (en) * | 2021-04-22 | 2021-08-06 | 吕贵刚 | Double-pad anti-loose bolt |
| CN117526144A (en) * | 2024-01-08 | 2024-02-06 | 宁波天安智能电网科技股份有限公司 | Prefabricated cabin type transformer substation |
| CN117526144B (en) * | 2024-01-08 | 2024-04-16 | 宁波天安智能电网科技股份有限公司 | Prefabricated cabin type transformer substation |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191231 |
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| CF01 | Termination of patent right due to non-payment of annual fee |