CN207921091U - A kind of anti-loosening screw connection - Google Patents

Abstract

The utility model discloses anti-loosening screw connections,It includes that one end is fixed on workpiece A,The other end passes through the screw rod that workpiece B is connected with nut,It is provided with gasket between workpiece B and nut,The gasket is provided with positioning pin,Positioning pin matches with the location hole sliding on workpiece B to be agreed with,It is annularly arranged at intervals with limit hole on the gasket,The nut lower end has shirt rim,Spliced eye is provided on shirt rim,The nut upper end is provided with beveling hole,Locking pin is provided between nut and gasket,The locking pin is integrally formed with rigid material and has straightway,Arc section and tilting section,The utility model does not occur in locking pin under shearing and the fracture of other external force,Even if there is vibrations,Especially used under the conditions of strenuous vibration,It can ensure that nut does not loosen always,It is simple in structure,It manufactures easy to use,Practicality andreliabiliry is strong,The threaded connection that can be adapted to extensively in all industries such as all kinds of mechanical equipments and architectural engineering uses.

Description

A kind of anti-loosening screw connection

Technical field

The utility model is related to a kind of even part attachment devices, more particularly, to a kind of screw connection that can be anti-loosening.

Background technology

In mechanical component or mechanism arrangement involved by all trades and professions such as industrial or agricultural and daily life, screw rod is mostly utilized The screw connection formed with nut locks part or component therein.Screw rod and nut are as tight with drive system Firmware is designed to be combined with solid lock workpiece with threaded fastener.Have not in opposite side and shape according to its use state and function With design and classification, general common nut has hex nut, turret wheel insulating nut, hexagonal high-strength nut, tetragonal nut, Buddhist nun Imperial nut, CAP NUTS nut, the magnificent silk nut of combination, castle groove nut, lug nut, welded nut, attaching nut and anti-skidding spiral shell Mother etc. is formed by attachment device by nut and screw rod and has a wide range of applications in all trades and professions, is useful for sealing between workpiece Threaded connection fastening device, be useful for the screw connection of mechanism driving, be useful for the work piece spiral shell that need not be dismantled Line attachment device is also useful for the fastening thread attachment device that need to often dismantle, and screw connection is compared with welding, riveting, tool There is the features such as bonding strength is high, convenient disassembly, but be threadedly coupled there is also an inevitable problem, it is more no matter to connect torque Greatly, there are vibrations, particularly in strenuous vibration, nut can voluntarily loosen, connection is invalid, causes component or complete machine to damage, very To bringing safety accident.In order to solve the problems, such as above-mentioned nut loosening, in machine-building with assembly, elastomeric pad is commonly used to prevent Only nut loosening, also useful bolt and only heavy screw, what also useful eccentric nut occlusion and zigzag nut shim coordinated, But adverse circumstances are located at for some（If any strenuous vibration etc., there are many have foeign element influence）, and it is general without each of dismounting In class mechanical equipment and the screw connection member of architectural engineering（If rail is fixed, bridge, steel building, harbour, airport and mine Machinery, chemical industry equipment and pipeline etc.）, prevent nut loosening from can only play the limited action of short time using above-mentioned method, and It cannot be solved long-term effectively.Such as use Anti-slip nut（It such as combines magnificent silk nut, the wounded in the battle teeth nut of flange or apply must Firm locking nut certainly will cause increasing working hour and use cost greatly since nut quantity is more.

Utility model content

Nut there are problems that easily loosening in being threadedly coupled in for the above-mentioned prior art, and the utility model provides one kind Not only conveniently, use cost is low, and will not loosen for compact-sized simple, process and assemble, and connection fastening is reliable, is particularly suitable for The screw connection used in all kinds of mechanical equipments of adverse circumstances and architectural engineering.

The technical solution that the technical problems to be solved in the utility model is taken：The anti-loosening screw connection packet The screw rod that one end is fixed on workpiece A, the other end passes through workpiece B to be connected with nut is included, is arranged between workpiece B and nut There is gasket, positioning pin is provided on the gasket, the positioning pin matches with the location hole sliding on workpiece B to be agreed with, the pad On piece is annularly arranged at intervals with limit hole, and the nut lower end has shirt rim, spliced eye, the spiral shell are provided on the shirt rim Female upper end is provided with beveling hole, is provided with locking pin between nut and gasket, the locking pin have straightway, arc section and Tilting section is simultaneously integrally formed with rigid material, and the straightway matches with spliced eye and limit hole sliding to be agreed with, the tilting section Match with the sliding of beveling hole and agree with, so that locking pin one end is inserted into limit hole by arc section deformation under external force, separately One end is inserted into beveling hole.

The utility model first positions gasket on workpiece B, prevents gasket from rotating, and recycles that intensity is high, the good material of rigidity Locking pin one end made of material passes through the spliced eye of nut shirt rim to extend into the limit hole on gasket, and the other end passes through outer masterpiece With in the beveling hole being inserted on nut（Locking pin ontology is set to be fixed）, prevent nut from rotating by locking pin effect, from And nut loosening can be effectively prevented.The present invention locking pin do not occur shearing and other external force fracture under, even if having vibrations, It especially being used under the conditions of strenuous vibration, can ensure that nut does not loosen always, it is simple in structure, manufacture is easy to use, Practicality andreliabiliry is strong, and the threaded connection that can be adapted to extensively in all industries such as all kinds of mechanical equipments and architectural engineering uses.

Beveling hole and spliced eye on nut described in the utility model are at least two, beveling hole on nut from outside to inside It tilts upwards, angle of inclination is 30-60 degree（With the angle of horizontal direction）, the angle between limit hole on the gasket is 15-30 degree（Depending on washer diameter size）, the positioning pin on gasket is at least two, the straightway diameter on the locking pin Coordinate for small―gap suture between limit hole（Small―gap suture is generally 0.2-0.5 millimeters）, the straightway diameter on locking pin and grafting It can be clearance fit between hole（Gap is generally 0.5-1.0 millimeters）, between the tilting section on the locking pin and beveling Kong Wei little Gap coordinates.Tilting section end face on the locking pin is inclined-plane, and the straightway end face on locking pin is plane, can carry small round corner Or chamfering.

Description of the drawings

Fig. 1 is the main cross section structure diagram of the first structure of the utility model,

Fig. 2 is the main cross section structure diagram of second of structure of the utility model,

Fig. 3 is the A-A schematic cross-sectional views of Fig. 1,

Fig. 4 is the structure enlargement diagram of locking pin described in the utility model.

In the figure 1, workpiece A 2, workpiece B 3, gasket 4, locking pin 5, nut 6, positioning pin 7, shirt rim 8, limit Hole 9, location hole 10, screw rod 11, plane 12, straightway 13, arc section 14, tilting section 15, inclined-plane 16, spliced eye 17, hole 18, groove are chamfer.

Specific implementation mode

Embodiment 1, in as shown in Figure 1, Figure 3 and Figure 4, the anti-loosening screw connection includes that one end is fixed at work On part A1, the other end pass through the screw rods 10 that are connected with nut 5 of workpiece B2, screw rod and nut that one, screw rod lower end and workpiece A is made It is connected with being screwed, it is provided with gasket 3 between workpiece B and nut, two symmetrical positioning pins 6 are provided on the gasket （It can also be three or more etc.）, the positioning pin on workpiece B location hole 9 sliding match（Small―gap suture activity phase Match）, 18 limit holes 8 are annularly arranged at intervals on the gasket（Angle is 20 degree i.e. between limit hole）, can also be 24（I.e. angle is 15 degree）Or 12（I.e. angle is 30 degree）, the spacing between gasket upper limit hole is in 15-30 degree, the spiral shell Female lower end has shirt rim 7, and two spliced eyes 16 are provided on the shirt rim（It can also be four or six etc.）, between spliced eye Away from limit pitch of holes it is identical, the nut upper end be provided with beveling hole, locking pin 4, institute are provided between nut and gasket It is plane to state locking pin and straightway 12, arc section 13 and tilting section 14, straightway end face are integrally formed and had with rigid material 11, tilting section end face is inclined-plane 15, and the straightway matches with spliced eye and limit hole sliding, and the tilting section is slided with beveling hole It is dynamic to match, so that locking pin one end is inserted into limit hole 8 by arc section deformation under external force, the other end is inserted into beveling hole In 17.It chamfers hole to tilt upwards from outside to inside on nut, angle of inclination is 30-60 degree（With the angle of horizontal direction）.

Embodiment 2,

In Fig. 2, the anti-loosening screw connection includes that one end is fixed on workpiece A1, the other end passes through The screw rod 10 that workpiece B2 is connected with nut 5, screw rod have hexagonal head, and head is located in the groove 18 in workpiece A, in work It is provided with gasket 3 between part B and nut, two symmetrical positioning pins 6 are provided on the gasket（It can also be three or more Deng）, the positioning pin on workpiece B location hole 9 sliding match（Small―gap suture activity matches）, between annular in shape on the gasket Every being provided with 18 limit holes 8（Angle is 20 degree between limit hole）, can also be 24（Angle is 15 degree）Or 12（Folder Angle is 30 degree）, for the spacing between gasket upper limit hole in 15-30 degree, the nut lower end has shirt rim 7, is set on the shirt rim It is equipped with two spliced eyes 16（It can also be four or six etc.）, the spacing of spliced eye is identical as limit pitch of holes, the nut Upper end is provided with beveling hole, locking pin 4 is provided between nut and gasket, the locking pin is integrally formed simultaneously with rigid material With straightway 12, arc section 13 and tilting section 14, straightway end face is plane 11, and tilting section end face is inclined-plane 15, described straight Line segment matches with spliced eye and limit hole sliding, and the tilting section matches with the sliding of beveling hole, passes through circular arc under external force Section deformation makes locking pin one end be inserted into limit hole 8, and the other end is inserted into beveling hole 17.Chamfer hole on nut from outside to inside （Center）It tilts upwards, angle of inclination is 30-60 degree（With the angle of horizontal direction）.

Embodiment of above is merely illustrative of the technical solution of the present invention and unrestricted, although with reference to specific embodiment to this Invention is described in detail, it will be understood by those of ordinary skill in the art that, technical scheme of the present invention can be repaiied Change or equivalent replacement should all cover and be wanted in right of the invention without departing from the spirit of the technical scheme of the invention with range In the range for asking protection.

Claims (3)

1. a kind of anti-loosening screw connection, it is characterized in that：It includes that one end is fixed at workpiece A（1）The upper, other end Across workpiece B（2）With nut（5）Connected screw rod（10）, gasket is provided between workpiece B and nut（3）, on the gasket It is provided with positioning pin（6）, the location hole on the positioning pin and workpiece B（9）Sliding, which matches, to be agreed with, between annular in shape on the gasket Every being provided with limit hole（8）, the nut lower end has shirt rim（7）, spliced eye is provided on the shirt rim（16）, the nut Upper end is provided with beveling hole（17）, locking pin is provided between nut and gasket（4）, the locking pin is with straightway （12）, arc section（13）And tilting section（14）It is used in combination rigid material to be integrally formed, the straightway is slided with spliced eye and limit hole Dynamic matching agrees with, and the tilting section matches with the sliding of beveling hole to be agreed with, and makes locking pin by arc section deformation under external force One end is inserted into limit hole, and the other end is inserted into beveling hole.

2. a kind of anti-loosening screw connection according to claim 1, it is characterized in that：The beveling hole is on nut It tilts upwards from outside to inside, angle of inclination is 30-60 degree.

3. a kind of anti-loosening screw connection according to claim 1, it is characterized in that：Between gasket upper limit hole Spacing is arranged with two positioning pins on 15-30 degree, gasket（6）.