CN106979212A - A kind of screw locking structure and its anti-loose method - Google Patents
A kind of screw locking structure and its anti-loose method Download PDFInfo
- Publication number
- CN106979212A CN106979212A CN201710203701.9A CN201710203701A CN106979212A CN 106979212 A CN106979212 A CN 106979212A CN 201710203701 A CN201710203701 A CN 201710203701A CN 106979212 A CN106979212 A CN 106979212A
- Authority
- CN
- China
- Prior art keywords
- jump ring
- stop nut
- locking
- locking jump
- check bolt
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 18
- 238000003780 insertion Methods 0.000 claims abstract description 9
- 230000037431 insertion Effects 0.000 claims abstract description 9
- 230000014759 maintenance of location Effects 0.000 claims description 5
- 238000004804 winding Methods 0.000 claims description 5
- 238000013507 mapping Methods 0.000 claims description 4
- 238000013461 design Methods 0.000 claims description 3
- 235000014676 Phragmites communis Nutrition 0.000 claims 2
- 229920006351 engineering plastic Polymers 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000004677 Nylon Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007373 indentation Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B39/00—Locking of screws, bolts or nuts
- F16B39/02—Locking of screws, bolts or nuts in which the locking takes place after screwing down
- F16B39/10—Locking of screws, bolts or nuts in which the locking takes place after screwing down by a plate, spring, wire or ring immovable with regard to the bolt or object and mainly perpendicular to the axis of the bolt
- F16B39/108—Locking of screws, bolts or nuts in which the locking takes place after screwing down by a plate, spring, wire or ring immovable with regard to the bolt or object and mainly perpendicular to the axis of the bolt with a locking washer under the nut or bolt head having at least one tongue or lug folded against the nut or bolt head, or against the object itself
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Springs (AREA)
- Bolts, Nuts, And Washers (AREA)
Abstract
The invention discloses a kind of screw locking structure, it is characterised in that the screw locking structure includes：Check bolt, stop nut, locking jump ring, the stop nut screws in check bolt, and the locking jump ring is arranged above stop nut, in locking jump ring dead bolt insertion check bolt groove, locking jump ring notch is embedded in stop nut card key, while locking jump ring key is embedded in stop nut groove.Check bolt method of the present invention can make the connection member run under vibrational state effectively connection and safe normal work by bolt pretightening control in constant, effective range, and it is more convenient that the dimension such as it is installed, dismounting supports operation.
Description
Technical field
The present invention is applied to because vibration makes bolt looseness and causes bolt to tighten the screw locking structure of failure and its prevent
Loose measure method.
Technical background
Check bolt is mainly used in controlling the loosening for the connection member run under the conditions of vibrational state to fail, and is particularly shaking
Plant equipment such as mining machinery under dynamic working condition etc. is, it is necessary to take measures to prevent superstructure loosening and influence mechanical connecting element
The method normally run.Existing check bolt be using plasma spray technology by bulk composition as nylon special engineering plastic spraying
On ridge, when screw thread is in rundown process, this layer of engineering plastics are extruded and produce powerful reaction force and frictional force,
So as to prevent screw from retreating, locking effect is reached.But, in actual applications this kind of check bolt under vibrational state still
Easily produce loosening, it is impossible to meet actual demand, it is necessary to a kind of union piece locking member for controlling to loosen function be designed, with true
Protect the continuous normal work of the machinery run under vibrational state.
The content of the invention
It is an object of the invention to provide a kind of screw locking structure, for controlling anti-loose ability more effective, install and
Dismounting is also more convenient.
To achieve these goals, the technical scheme is that：A kind of screw locking structure, it is characterised in that the bolt
Anti-loose structure includes：
Check bolt, the end of the check bolt is axially disposed check bolt groove；
It is provided with the top of stop nut, the stop nut above card key, stop nut and locking jump ring is set, stop nut side is set
Put stop nut groove；
Dead bolt is set on the inside of locking jump ring, the locking jump ring, outside sets circumferentially arranged locking jump ring notch, locking jump ring
Both sides set locking jump ring key；
The stop nut screws in check bolt, and the locking jump ring is arranged above stop nut, locking jump ring dead bolt insertion
In check bolt groove, locking jump ring notch is embedded in stop nut card key, while locking jump ring key is embedded in stop nut groove.
Further, the locking jump ring is a ring, and the locking jump ring key includes an angularly disposed elastic spring
Piece, the upper end of the elastic spring is connected with locking jump ring lateral surface, and the lower end of the elastic spring stretches out, its bottom to
Upper inside winding, forms a ring-type card key.
Further, described two locking jump ring key mappings are on a central axis of locking jump ring, the locking jump ring
Lateral surface sets and is circumferentially evenly arranged with multiple locking jump ring notches, and the locking jump ring key is provided in its adjacent two
The centre position of locking jump ring notch.
Further, the stop nut includes being provided with a stop nut above hex nut, the hex nut
Flange, is provided with a stop nut neck, the stop nut card between the top of the hex nut and stop nut flange
Groove is along the circumferentially disposed arc-shaped recess face of stop nut lateral surface, the shape in the arc-shaped recess face and the elastic spring ring
The shape of shape card key is engaged.
Further, the length of the check bolt groove is generally the 30% ~ 60% of the length of whole check bolt, described
The depth of check bolt groove is not more than the 1/5 of check bolt nominal diameter.
It is an object of the invention to provide a kind of screw retention method, for controlling anti-loose ability more effective, install and
Dismounting is also more convenient.
To achieve these goals, the technical scheme is that：A kind of anti-loose method of check bolt, it is characterised in that：
It the described method comprises the following steps：
A, to required connection member insert check bolt, the end of the check bolt is axially disposed check bolt groove；
B, stop nut screws in check bolt, card key is provided with the top of stop nut, stop nut side sets stop nut recessed
Groove；
C, stop nut tightened and during close to design moment of torsion, locking jump ring is inserted in check bolt, the locking jump ring
Inner side sets dead bolt, and outside sets circumferentially arranged locking jump ring notch, and locking jump ring both sides set locking jump ring key, locking card
In spring dead bolt insertion check bolt groove, locking jump ring is pushed at the top of stop nut card key；
D, turn stop nut its card key is directed at locking jump ring notch and locking jump ring is pressed, locking jump ring notch insertion is locking
Nut card key, while locking jump ring key is embedded in stop nut groove.
Further, the locking jump ring is a ring, and the locking jump ring key includes an angularly disposed elastic spring
Piece, the upper end of the elastic spring is connected with locking jump ring lateral surface, and the lower end of the elastic spring stretches out, its bottom to
Upper inside winding, forms a ring-type card key.
Further, described two locking jump ring key mappings are on a central axis of locking jump ring, the locking jump ring
Lateral surface sets and is circumferentially evenly arranged with multiple locking jump ring notches, and the locking jump ring key is provided in its adjacent two
The centre position of locking jump ring notch.
Further, the stop nut includes being provided with a stop nut above hex nut, the hex nut
Flange, is provided with a stop nut neck, the stop nut card between the top of the hex nut and stop nut flange
Groove is along the circumferentially disposed arc-shaped recess face of stop nut lateral surface.
Further, the length of the check bolt groove is generally the 30% ~ 60% of the length of whole check bolt, described
The depth of check bolt groove is not more than the 1/5 of check bolt nominal diameter.
Advantages of the present invention is as described below：
1. it is that mechanical type is locking to carry out locking bolt using locking jump ring, it can effectively control to put on connection member thrust,
And can be by thrust constant control in effective range；
2. it can ensure that locking jump ring can ensure that with permanent be engaged of stop nut in locking jump ring dead bolt insertion check bolt groove
Bolt does not loosen；
Simple operation when 3. part is installed, conserves and repaired, makes to prevent as dismounting can open locking clamp spring hole by locking clamp spring hole
Loose jump ring exits stop nut and then takes out locking jump ring along check bolt groove；
In summary, check bolt method of the present invention can make in vibration shape by bolt pretightening control in constant, effective range
The connection member run under state effectively connection and safe normal work, it is more convenient that the dimension such as it is installed, dismounting supports operation.
Brief description of the drawings
Fig. 1 is check bolt general assembly drawing.
Fig. 2 is Fig. 1 top view.
Fig. 3 is locking jump ring plan.
Fig. 4 is Fig. 3 A-A sectional views.
Fig. 5 is Fig. 3 B-B sectional views.
Fig. 6 is the plan of stop nut.
Fig. 7 is the sectional view of stop nut.
Fig. 8 is the plan of check bolt.
Fig. 9 is the profile of check bolt.
Each unit number is expressed as follows in figure：
Check bolt 1；
Check bolt groove 1-1；
Locking jump ring 2；
Locking jump ring notch 2-1, locking jump ring block tongue 2-2, locking jump ring key 2-3, locking jump ring endoporus 2-4；
Stop nut 3；
Stop nut card key 3-1, stop nut flange 3-2, stop nut neck 3-3；
Spring washer 4；
Plain washer 5；
Connection member 6.
Embodiment
The invention will be further described below in conjunction with the accompanying drawings.
As Fig. 3 ~ 5 show the structural representation of locking jump ring.As illustrated, the locking jump ring 2 is a ring, its
Center is locking jump ring endoporus 2-4, and the inner side of the locking jump ring sets locking jump ring block tongue 2-2, the locking jump ring block tongue
2-2 front end semicircular in shape, the locking jump ring block tongue 2-2 and locking jump ring medial surface junction set arc-shaped concave, described
Locking jump ring lateral surface, which is set, is circumferentially evenly arranged with multiple locking jump ring notch 2-1, and locking jump ring lateral surface both sides are set
Locking jump ring key 2-3, the locking jump ring key 2-3 include an angularly disposed elastic spring, the upper end of the elastic spring with
Locking jump ring lateral surface connection, the lower end of the elastic spring stretches out, and the inside winding of its bottom up forms a ring-type card
Key.
Further, described two locking jump ring key 2-3 are located on a central axis of locking jump ring, i.e., described two
Locking jump ring key is distributed on the outer peripheral face of locking jump ring in 180 degree.
Further, the locking jump ring lateral surface, which is set, is circumferentially evenly arranged with 6 locking jump ring notch 2-1, institute
State the centre position that locking jump ring key 2-3 is provided in its two adjacent locking jump ring notch 2-1.
As shown in Figure 6,7, the stop nut 3 includes hex nut, and it is locking to be provided with one above the hex nut
Nut flange 3-2, is provided with a stop nut neck 3-3, institute between the top of the hex nut and stop nut flange 3-2
It is along the circumferentially disposed arc-shaped recess face of stop nut lateral surface, the shape in the arc-shaped recess face to state stop nut neck 3-3
It is engaged with the shape of the elastic spring ring-type card key, as illustrated, the radian in the arc-shaped recess face and ring-type card key
Radian is consistent so that the ring-type card key of elastic spring is able to be caught in arc-shaped recess face just.
The top of the stop nut 3 is provided with 2 stop nut card key 3-1,2 3-1 pairs of stop nut card keys
Title is arranged on stop nut flange 3-2 top surface, and its size is engaged with locking jump ring notch 2-1 size.
As shown in Figure 8,9, the end of check bolt 1 is axially disposed the locking spiral shell coordinated with locking jump ring block tongue 2-2
Bolt groove 1-1, the length of the check bolt groove 1-1 is generally the 30% ~ 60% of the length of whole check bolt 1, described anti-
Loose bolt indentation 1-1 depth is not more than the 1/5 of check bolt nominal diameter.
The present invention is a kind of check bolt method, and its methods ＆＆ steps of implementation is as follows：
1. connection member 6 needed for pair inserts check bolt 1；
2. stop nut 3 is screwed in into check bolt 1；
3. stop nut 3 is tightened and during close to design moment of torsion, locking jump ring dead bolt 2-2 is directed at check bolt groove 1-
1 is inserted in check bolt 1 and is pushed at the top of stop nut card key 3-1；
4. slightly turning stop nut 3 stop nut card key 3-1 is aligned into locking jump ring notch 2-1 and locking jump ring 2 is pressed, prevent
Loose jump ring notch 2-1 is embedded in stop nut card key 3-1, while locking jump ring key 2-3 insertion stop nut grooves 3-3.
Locking jump ring dead bolt is caught in check bolt groove and pushed at the top of stop nut card key, it is anti-by slightly turning
Its card key can be directed at a locking jump ring notch step of going forward side by side and push locking jump ring and locking jump ring key is embedded in locking spiral shell by loose nut
Female groove, so can reach fixing nut and it is not rotated ensures connection member continuous and effective, normal under vibrational state
The mesh of work.
When locking jump ring notch is embedded in stop nut card key, while locking jump ring key is embedded in the locking card of stop nut groove
Key uses circular hole pattern to dismantle.
Check bolt card key, locking jump ring notch can adjust its number according to the pretightning force control accuracy requirement of connection member
Amount, requires that the higher connection member of control accuracy can suitably increase locking jump ring notch quantity for pretightning force, otherwise can be appropriate
Reduce locking jump ring notch quantity.
Described above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
Member, under the premise without departing from the principles of the invention, can also make some improvements and modifications, and these improvements and modifications also should be regarded as this
The protection domain of invention.
Claims (10)
1. a kind of screw locking structure, it is characterised in that the screw locking structure includes：
Check bolt, the end of the check bolt is axially disposed check bolt groove；
It is provided with the top of stop nut, the stop nut above card key, stop nut and locking jump ring is set, stop nut side is set
Put stop nut neck；
Dead bolt is set on the inside of locking jump ring, the locking jump ring, outside sets circumferentially arranged locking jump ring notch, locking jump ring
Both sides set locking jump ring key；
The stop nut screws in check bolt, and the locking jump ring is arranged above stop nut, locking jump ring dead bolt insertion
In check bolt groove, locking jump ring notch is embedded in stop nut card key, while locking jump ring key is embedded in stop nut neck.
2. screw locking structure as claimed in claim 1, it is characterised in that the locking jump ring is a ring, described locking
Jump ring key includes an angularly disposed elastic spring, and the upper end of the elastic spring is connected with locking jump ring lateral surface, the bullet
Property reed lower end stretch out, the inside winding of its bottom up, formed a ring-type card key.
3. screw locking structure as claimed in claim 2, it is characterised in that described two locking jump ring key mappings are in locking jump ring
A central axis on, the locking jump ring lateral surface sets and is circumferentially evenly arranged with multiple locking jump ring notches, described
Locking jump ring key is provided in the centre position of its two adjacent locking jump ring notch.
4. screw locking structure as claimed in claim 2, it is characterised in that the stop nut includes hex nut, described six
A stop nut flange is provided with above the nut of angle, one is provided between the top of the hex nut and stop nut flange
Stop nut neck, the stop nut neck is along the circumferentially disposed arc-shaped recess face of stop nut lateral surface, the arc
The shape of concave face is engaged with the shape of the elastic spring ring-type card key.
5. screw locking structure as claimed in claim 1, it is characterised in that the length of the check bolt groove is generally whole
The 30% ~ 60% of the length of individual check bolt, the depth of the check bolt groove is not more than the 1/5 of check bolt nominal diameter.
6. a kind of anti-loose method of check bolt, it is characterised in that：It the described method comprises the following steps：
A, to required connection member insert check bolt, the end of the check bolt is axially disposed check bolt groove；
B, stop nut screws in check bolt, card key is provided with the top of stop nut, stop nut side sets stop nut recessed
Groove；
C, stop nut tightened and during close to design moment of torsion, locking jump ring is inserted in check bolt, the locking jump ring
Inner side sets dead bolt, and outside sets circumferentially arranged locking jump ring notch, and locking jump ring both sides set locking jump ring key, locking card
In spring dead bolt insertion check bolt groove, locking jump ring is pushed at the top of stop nut card key；
D, turn stop nut its card key is directed at locking jump ring notch and locking jump ring is pressed, locking jump ring notch insertion is locking
Nut card key, while locking jump ring key is embedded in stop nut neck.
7. screw retention method as claimed in claim 6, it is characterised in that the locking jump ring is a ring, described locking
Jump ring key includes an angularly disposed elastic spring, and the upper end of the elastic spring is connected with locking jump ring lateral surface, the bullet
Property reed lower end stretch out, the inside winding of its bottom up, formed a ring-type card key.
8. screw retention method as claimed in claim 7, described two locking jump ring key mappings are in a center of locking jump ring
On axis, the locking jump ring lateral surface, which is set, is circumferentially evenly arranged with multiple locking jump ring notches, the locking jump ring key
It is provided in the centre position of its two adjacent locking jump ring notch.
9. screw retention method as claimed in claim 6, the stop nut includes hex nut, the hex nut it is upper
Side is provided with a stop nut flange, and a stop nut card is provided between the top of the hex nut and stop nut flange
Groove, the stop nut neck is along the circumferentially disposed arc-shaped recess face of stop nut lateral surface.
10. screw retention method as claimed in claim 6, the length of the check bolt groove is generally whole check bolt
Length 30% ~ 60%, the depth of the check bolt groove is not more than the 1/5 of check bolt nominal diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710203701.9A CN106979212B (en) | 2017-03-30 | 2017-03-30 | Bolt anti-loosening structure and anti-loosening method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710203701.9A CN106979212B (en) | 2017-03-30 | 2017-03-30 | Bolt anti-loosening structure and anti-loosening method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106979212A true CN106979212A (en) | 2017-07-25 |
| CN106979212B CN106979212B (en) | 2024-06-14 |
Family
ID=59339823
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710203701.9A Active CN106979212B (en) | 2017-03-30 | 2017-03-30 | Bolt anti-loosening structure and anti-loosening method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106979212B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108019414A (en) * | 2017-11-30 | 2018-05-11 | 中国航空工业集团公司沈阳飞机设计研究所 | A kind of anti-loose fastener |
| CN111425510A (en) * | 2020-04-23 | 2020-07-17 | 林义 | Locking and positioning structure |
| CN115008709A (en) * | 2022-06-06 | 2022-09-06 | 嘉善子凡展示道具有限公司 | Heating structure for plastic product production equipment |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2254968Y (en) * | 1996-07-18 | 1997-05-28 | 黄志桂 | Internal locking type locknut screw pair |
| TW559251U (en) * | 2002-09-30 | 2003-10-21 | Hong Kong Disc Lock Co | Wedge-locking fastener assembly with ring retiner for washer |
| KR20040056707A (en) * | 2002-12-24 | 2004-07-01 | 홍석용 | release prevneting system of bolt and nut with an inward teeth type release preventing unit |
| CN2791329Y (en) * | 2005-01-11 | 2006-06-28 | 沈会清 | Screw-thread connector capable of dismounting and never loosing and droping |
| JP2014013051A (en) * | 2012-07-04 | 2014-01-23 | Yasuo Ueno | Looseness prevention set |
| CN204371900U (en) * | 2014-12-26 | 2015-06-03 | 大连滨城活塞制造有限公司 | A kind of screw retention jump ring |
| CN205331183U (en) * | 2015-12-07 | 2016-06-22 | 威德车业部件有限公司 | Quick detachable wheel hub spindle nose lock nut's locking mechanism |
| KR20160143910A (en) * | 2015-06-04 | 2016-12-15 | (주)바이브록 | Washer for prevention of looseness |
| CN106523507A (en) * | 2016-12-02 | 2017-03-22 | 江西洪都航空工业集团有限责任公司 | Bolt locking device |
| CN207333427U (en) * | 2017-03-30 | 2018-05-08 | 上海市政工程设计研究总院（集团）有限公司 | A kind of screw locking structure |
-
2017
- 2017-03-30 CN CN201710203701.9A patent/CN106979212B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2254968Y (en) * | 1996-07-18 | 1997-05-28 | 黄志桂 | Internal locking type locknut screw pair |
| TW559251U (en) * | 2002-09-30 | 2003-10-21 | Hong Kong Disc Lock Co | Wedge-locking fastener assembly with ring retiner for washer |
| KR20040056707A (en) * | 2002-12-24 | 2004-07-01 | 홍석용 | release prevneting system of bolt and nut with an inward teeth type release preventing unit |
| CN2791329Y (en) * | 2005-01-11 | 2006-06-28 | 沈会清 | Screw-thread connector capable of dismounting and never loosing and droping |
| JP2014013051A (en) * | 2012-07-04 | 2014-01-23 | Yasuo Ueno | Looseness prevention set |
| CN204371900U (en) * | 2014-12-26 | 2015-06-03 | 大连滨城活塞制造有限公司 | A kind of screw retention jump ring |
| KR20160143910A (en) * | 2015-06-04 | 2016-12-15 | (주)바이브록 | Washer for prevention of looseness |
| CN205331183U (en) * | 2015-12-07 | 2016-06-22 | 威德车业部件有限公司 | Quick detachable wheel hub spindle nose lock nut's locking mechanism |
| CN106523507A (en) * | 2016-12-02 | 2017-03-22 | 江西洪都航空工业集团有限责任公司 | Bolt locking device |
| CN207333427U (en) * | 2017-03-30 | 2018-05-08 | 上海市政工程设计研究总院（集团）有限公司 | A kind of screw locking structure |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108019414A (en) * | 2017-11-30 | 2018-05-11 | 中国航空工业集团公司沈阳飞机设计研究所 | A kind of anti-loose fastener |
| CN111425510A (en) * | 2020-04-23 | 2020-07-17 | 林义 | Locking and positioning structure |
| CN111425510B (en) * | 2020-04-23 | 2021-09-14 | 林义 | Locking and positioning structure |
| CN115008709A (en) * | 2022-06-06 | 2022-09-06 | 嘉善子凡展示道具有限公司 | Heating structure for plastic product production equipment |
| CN115008709B (en) * | 2022-06-06 | 2023-11-24 | 祁阳碧锦塑胶有限公司 | Heating structure for plastic product production equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106979212B (en) | 2024-06-14 |
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