CN209687899U - Check bolt structure - Google Patents
Check bolt structure Download PDFInfo
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- CN209687899U CN209687899U CN201920156834.XU CN201920156834U CN209687899U CN 209687899 U CN209687899 U CN 209687899U CN 201920156834 U CN201920156834 U CN 201920156834U CN 209687899 U CN209687899 U CN 209687899U
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Abstract
The utility model discloses a kind of check bolt structures, including bolt, nut and lower Dish assembly；Under the nut end of dish-like component be equipped with lower saucer washer, work end is equipped with workpiece nest round tube, and the outer diameter of workpiece nest round tube is adapted to the first workpiece fixation hole on the first workpiece；The center of workpiece nest round tube is equipped with bolt hole, and bolt hole is conical bore, and the internal diameter of work end is greater than with the internal diameter of nut end；The bolt is stud, and the second workpiece threaded hole threaded adapter on the screw thread and second workpiece of work end, nut end is connect by threaded adapter with nut thread, and the screw thread of work end is consistent with the direction of rotation of the screw thread of nut end；The middle part of bolt is the truncated cone-shaped being adapted to bolt hole；The axis coincidence of bolt, nut, lower saucer washer, workpiece nest round tube, conical bore, the first workpiece fixation hole.The beneficial effects of the utility model are: bolt centering can be realized accurately, cooperate the use of saucer washer, it is ensured that will not loosen after fastening.
Description
Technical field
The utility model belongs to fastener areas, specifically a kind of check bolt structure.
Background technique
Hydraulic generator machine cap connect with seat ring basis and conventional bolt is widely used at present, and conventional bolt structure shortage can
The anti-loose structure leaned on.Because there is hydraulic vibration in operation in hydraulic generator machine cap, it is easier to cause top cover connection bolt pine
It is dynamic, cause bolt will fatigue fracture in the short time.The power station Russian Sa Yang-Shu Shensike is just once since closure stud is disconnected
It splits and major accident occurs.Chinese patent literature CN108496014A was disclosed on September 4th, 2018 " prevents mining grinder
Overflow and keep the device of fastening bolt leakproofness and tension ", described device maintains the bolt periphery for protecting mining to pad
Sealing element so that bolt keeps tension in the range of several millimeters on head and nut length along bolt, the length
It spends by bolt head and prevents the element compressed between the device of grinder spillage covering, it is close to provide to apply pressure on washer
Envelope prevents the leakage inside grinder.Described device includes one or more pairs of butterfly gaskets, and washer includes annular space, annular space insertion tool
There is the casing of inner seal.Described sleeve pipe includes the flange with larger diameter, so that bolt acts on butterfly gasket.Institute
It states butterfly gasket and applies pressure on the washer that leakproofness is provided, prevents grinder internal leakage.Under maximum compression situation, set
The length of pipe is greater than or equal to the overall thickness of butterfly gasket, is only less than butterfly gasket with the above-mentioned diameter on threaded bolt contacts surface
The flange of casing is just needed when ring internal diameter.Although being proposed in the program using one or more pairs of butterfly gaskets to increase friction
Power, the structure for improving relaxation effect, but due to being clearance fit between bolt and the bolt hole of two workpiece, even if tight
Bolt axis under solid fraction state, two workpiece bolt axially bored line three be not overlapped mutually often, bolt can not centering, cause nut with
It rubs on contact surface on contact surface on the contact surface of saucer washer, between two saucer washers, between saucer washer and workpiece
The distribution of power is necessarily non-uniform, this is the basic reason for causing bolt to fluff under the action of external vibration.
Summary of the invention
Based on problem above, the utility model provides a kind of check bolt structure, can accurately realize bolt centering, match
Close the use of saucer washer, it is ensured that will not loosen after fastening.
In order to realize goal of the invention, the utility model adopts the following technical solution: a kind of check bolt structure, including bolt
And nut, it is additionally provided with lower Dish assembly；Under dish-like component nut end be equipped with lower saucer washer, work end be equipped with workpiece nest justify
Pipe, the outer diameter of workpiece nest round tube are adapted to the first workpiece fixation hole on the first workpiece；The center of workpiece nest round tube is equipped with
Bolt hole, bolt hole are conical bore, and the internal diameter of work end is greater than with the internal diameter of nut end；The bolt is stud,
Second workpiece threaded hole threaded adapter on the screw thread and second workpiece of work end, nut end pass through threaded adapter and nut spiral shell
Line connection, and the screw thread of work end is consistent with the direction of rotation of the screw thread of nut end；The middle part of bolt is to be adapted to bolt hole
Truncated cone-shaped；The axis coincidence of bolt, nut, lower saucer washer, workpiece nest round tube, conical bore, the first workpiece fixation hole.
The check bolt structure of this programme design, for stud, one end is connect the bolt used with nut thread, the end
Direction is hereinafter referred to as nut end, and the other end is connect with the threaded hole on second workpiece, and the end direction is under
It is referred to as work end in text.In order to realize with the first workpiece of bolt fastening and second workpiece, needs to make on the first workpiece hole, make
For the first workpiece fixation hole, which can be the through-hole of smooth hole wall, be also possible to set internal thread threaded hole.And in bolt
It further include dish-like component under one in structure, the main envelope two parts of the component, a part is dish-like washer under nut end,
Another part is workpiece nest round tube, penetrates the first workpiece fixation hole with workpiece nest round tube, below dish-like washer end face into
Row limit.Wherein the lateral wall of workpiece nest round tube is cylindrical surface, and center is equipped with axial conical bore, forms bolt hole, circle
The microcephaly direction of taper hole is towards work end.And the middle part between the nut end and work end of bolt is truncated cone-shaped, microcephaly is towards work
Bolt is penetrated bolt hole by part end, forms the conical bore inner sidewall of truncated cone-shaped lateral wall and bolt hole in the middle part of bolt
Adaptation, can by the axis of the workpiece nest round tube where the axis and bolt hole of bolt, under dish-like component, the first workpiece consolidate
The boresighting for determining hole is extremely overlapped.The bolt is stretched out to the work end and second workpiece threaded hole screw thread outside the first workpiece fixation hole
Nut, is screwed in the nut end of bolt, further by the axis of the second workpiece threaded hole and nut also axis with bolt by connection
Calibrate to coincidence so that under dish-like washer be either still respectively formed with the first workpiece upper surface with nut lower end surface face with
The even contact in face, it is ensured that frictional force is sufficiently strong, forms non-return, antiskid effect with powerful stiction, it is ensured that this structure exists
It will not be loosened after tightening nut.Since this programme is not related to gravity, when use, is not limited by direction.In use, first
Lower saucer washer and the first workpiece fixation hole are cooperated, then bolt is passed through into the first workpiece fixation hole, by the work end of bolt with
Second workpiece threaded hole is screwed, and finally the nut end by nut in bolt is tightened.
Preferably, the lateral wall of workpiece nest round tube is equipped with screw thread, corresponded on the inner sidewall of the first workpiece fixation hole
Be equipped with screw thread；Set screw thread is consistent with the direction of rotation of the screw thread of work end on the lateral wall of workpiece nest round tube.In workpiece
Screw thread is provided on the lateral wall of nested round tube, is connected with internal screw thread corresponding on the inner sidewall of the first workpiece fixation hole, it can be with
Connection type is advanced optimized, helps lower Dish assembly and second workpiece to form integral structure, generates good positioning action.
In order to help to rotate lower Dish assembly, those skilled in the art can be considered and design force structure in place, such as
Dish-like washer is designed as polygon by under, and hand is facilitated to twist or use tool.
Preferably, the mating surface of lower saucer washer and/or the first workpiece is equipped with anti-skidding annular knurl.It in this way can be further
Lower frictional force between saucer washer and the mating surface of the first workpiece is improved, anti-loosing effect is strengthened.
Preferably, being additionally provided with saucer washer, upper dish-like washer is equal with the diameter of lower saucer washer；Upper dish-like washer
Opening direction towards work end, the opening direction of lower saucer washer is towards nut end, and the two is with the state pair of opening direction pair
It closes；The nut side positioned at upper saucer washer that nut is close to.The opening direction of upper saucer washer and lower saucer washer forms pairing,
The structure that elastic effect is all had at both ends is formed, which can play elastic force at axial both ends, help mating surface
Between keep higher frictional force.Theoretically upper saucer washer and lower two component of saucer washer can also be combined into an integration
Hollow component, but be constrained to manufacturing technology, at present there is no method realizations.
Higher frictional force is kept between mating surface in order to further strengthen, it can also be in upper saucer washer and lower dish pad
Pressure spring is abutted between circle, to keep elastic force uniform, spring is preferred to be directly socketed on bolt.
Preferably, the mating surface of upper dish-like washer and lower saucer washer is equipped with anti-skidding annular knurl.Anti-skidding annular knurl can be helped
Dish-like washer and lower saucer washer is helped to avoid doing circumferentially opposed rotation.
Preferably, the anti-skidding annular knurl being arranged in upper dish-like washer and the mating surface of lower saucer washer is tooth chimeric mutually
Shape, the circle distribution of tooth form circle where bolt axle center.In each shape, using the circumference point along the circle where bolt axle center
The tooth form of cloth, and upper dish-like washer and the tooth form of lower saucer washer are chimeric mutually, are optimal selection.
Preferably, being provided with anti-skidding annular knurl in the mating surface of nut and/or upper dish-like washer.The design prevents nut
Relative to the rotation of upper saucer washer.
Preferably, bolt is equipped with the rotation force structure for driving bolt rotation.In the work end and the second work of bolt
When part threaded hole realizes connection, bolt needs a force structure, is turned with facilitating.There are many specific force structures, such as
Plane of constraint can be cut along axial direction in wherein one end of bolt, be twisted with hand or tool is screwed on the plane of constraint, Huo Zhe
Radial through-hole or blind hole are designed in the middle part of bolt, are inserted into the hole with pin shaft and are driven bolt rotation.It specifically can be by ability
Field technique personnel's required design.
Preferably, the rotation force structure is the hexagon counterbore set on the nut end end of bolt.This programme choosing
What is selected is to design hexagon counterbore in the nut end end of bolt, is commonly called as Hexagon hole.Hexagon hole can use standard ruler
It is very little, it can be operated using standard tool, processing use is all very convenient.
In conclusion cooperating saucer washer the beneficial effects of the utility model are: bolt centering can be realized accurately
It uses, it is ensured that will not be loosened after fastening.
Detailed description of the invention
Fig. 1 is the use state diagram of the utility model.
Fig. 2 is the axial parts explosion of the utility model.
Wherein: 1 bolt, 2 nuts, 3 lower Dish assemblies, saucer washer on 4,11 hexagon counterbores, 31 lower saucer washers, 32
Workpiece nest round tube, 33 bolt holes, the first workpiece of A, A1 the first workpiece fixation hole, B second workpiece, B1 second workpiece screw thread
Hole.
Specific embodiment
The utility model is further described with specific embodiment with reference to the accompanying drawing.
Embodiment as shown in Figure 1 is a kind of check bolt structure, applies and connect in hydraulic generator machine cap and seat ring basis
It connects.In this structure, with hydraulic generator machine cap for the first workpiece A, the first workpiece fixation hole A1 which is provided with, with seat ring basis
For second workpiece B, second workpiece threaded hole B1 which is provided with.It separately include a set of bolt pair, including bolt 1, nut 2, lower dish
Component 3 and upper saucer washer 4.
Bolt 1 is stud, and the screw thread of upper end can be adapted to nut 2, and the screw thread of lower end can be with second workpiece spiral shell
Pit B1 is threadedly coupled.1 upper surface of bolt is additionally provided with hexagon counterbore 11, and turning spanner for cooperation standard hexagon socket head cap screw makes
With.The middle part of bolt is truncated cone-shaped, and for small end under, upper end diameter is greater than the diameter of the threaded upper ends position of bolt, lower end
Diameter is equal with the diameter of lower thread position of screw thread.
Lower Dish assembly 3 includes upper and lower two parts: top dish-like washer 31 under being, opening direction is upward；Lower part is work
Part nesting round tube 32.32 outer diameter of workpiece nest round tube is equal, is equipped with screw thread, connect with the internal screw thread of the first workpiece fixation hole A1.
The center of workpiece nest round tube 32 is equipped with bolt hole 33, and bolt hole 33 is a up big and down small conical bore, inner sidewall
It is adapted to the lateral wall of the truncated cone-shaped at 1 middle part of bolt.
Upper Dish assembly 4 is equal with the diameter of lower saucer washer 3, and Open Side Down.Upper dish-like washer and lower saucer washer with
The state pairing of opening direction pair, the mating surface of the two are equipped with anti-skidding annular knurl, which is tooth form chimeric mutually, tooth
The circle distribution of shape circle where bolt axle center.
Nut 2 is the hex nut of standard, the upper end face contact of lower end surface and upper Dish assembly 4, in the cooperation of the two
On face, all design has anti-skidding annular knurl.
First workpiece fixation hole A1 is first placed in above second workpiece threaded hole B1, then by the check bolt structure of this example
Workpiece nest round tube 32 is connected through a screw thread and is fixed in the first workpiece fixation hole A1, the bottom surface of lower saucer washer 31 is close to
Mating surface by first upper end workpiece fixation hole A1.Bolt is inserted into bolt hole 33 with work end downwardly direction at this time, and
The screw thread being exposed to outside bolt hole lower end is threadedly coupled with second workpiece threaded hole B1 realization, standard can be used at this time
Allen wrench is fastened, until bolt 1 and second workpiece threaded hole B1 is fixed, while the lateral wall of 1 middle part rotary table of bolt
It is close to adaptation with the inner sidewall of bolt hole.Finally upper saucer washer 4 is covered on bolt 1 with the direction that Open Side Down, with spiral shell
Mother 2 is screwed in the nut end of bolt 1, and the first workpiece A and second workpiece B are tightly fixed together.At this time bolt 1, nut 2,
Lower Dish assembly 3, upper saucer washer 4, the first workpiece fixation hole A1 and second workpiece threaded hole B1 axis be overlapped, make lower dish
Between shape washer 31 and the mating surface of the first workpiece A, between lower saucer washer 31 and the mating surface of upper saucer washer 4, upper dish
It is respectively formed the even contact in face and face between washer 4 and the mating surface of nut 2, forms powerful stiction after tightening, no
It is easy to loosen, to guarantee the permanently effective of fastening.
Claims (9)
1. a kind of check bolt structure, including bolt (1) and nut (2), characterized in that be additionally provided with lower Dish assembly (3)；Lower dish
The nut end of type component is equipped with lower saucer washer (31), and work end is equipped with workpiece nest round tube (32), outside workpiece nest round tube
Diameter is adapted to the first workpiece fixation hole (A1) on the first workpiece (A)；The center of workpiece nest round tube is equipped with bolt hole (33),
Bolt hole is conical bore, and the internal diameter of work end is greater than with the internal diameter of nut end；The bolt is stud, the spiral shell of work end
Second workpiece threaded hole (B1) threaded adapter on line and second workpiece (B), nut end by threaded adapter and nut thread
Connection, and the screw thread of work end is consistent with the direction of rotation of the screw thread of nut end；The middle part of bolt is to be adapted to bolt hole
Truncated cone-shaped；The axis coincidence of bolt, nut, lower saucer washer, workpiece nest round tube, conical bore, the first workpiece fixation hole.
2. a kind of check bolt structure according to claim 1, characterized in that the lateral wall of workpiece nest round tube is equipped with
Screw thread, it is corresponding on the inner sidewall of the first workpiece fixation hole to be equipped with screw thread；On the lateral wall of workpiece nest round tube set screw thread with
The direction of rotation of the screw thread of work end is consistent.
3. a kind of check bolt structure according to claim 1 or 2, characterized in that lower saucer washer and/or the first workpiece
Mating surface be equipped with anti-skidding annular knurl.
4. a kind of check bolt structure according to claim 1 or 2, characterized in that saucer washer (4) are additionally provided with, on
Dish-like washer is equal with the diameter of lower saucer washer；The opening direction of upper dish-like washer towards work end, open by lower saucer washer
Mouth direction is towards nut end, and the two is with the state pairing of opening direction pair；The nut side positioned at upper saucer washer that nut is close to.
5. a kind of check bolt structure according to claim 4, characterized in that upper dish-like washer is matched with lower saucer washer
Conjunction face is equipped with anti-skidding annular knurl.
6. a kind of check bolt structure according to claim 5, characterized in that upper dish-like washer is matched with lower saucer washer
The anti-skidding annular knurl being arranged on conjunction face is tooth form chimeric mutually, the circle distribution of tooth form circle where bolt axle center.
7. a kind of check bolt structure according to claim 4, characterized in that the cooperation of nut and/or upper dish-like washer
Anti-skidding annular knurl is provided on face.
8. a kind of check bolt structure according to claim 1 or 2, characterized in that bolt, which is equipped with, drives bolt rotation
Rotation force structure.
9. a kind of check bolt structure according to claim 8, characterized in that the rotation force structure is set on bolt
Nut end end hexagon counterbore (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920156834.XU CN209687899U (en) | 2019-01-29 | 2019-01-29 | Check bolt structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920156834.XU CN209687899U (en) | 2019-01-29 | 2019-01-29 | Check bolt structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209687899U true CN209687899U (en) | 2019-11-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920156834.XU Active CN209687899U (en) | 2019-01-29 | 2019-01-29 | Check bolt structure |
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| CN (1) | CN209687899U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109838446A (en) * | 2019-01-29 | 2019-06-04 | 浙江富春江水电设备有限公司 | Check bolt structure |
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2019
- 2019-01-29 CN CN201920156834.XU patent/CN209687899U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109838446A (en) * | 2019-01-29 | 2019-06-04 | 浙江富春江水电设备有限公司 | Check bolt structure |
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