CN204677571U - A kind of high strength 16 spline head flange loss of weight bolt - Google Patents
A kind of high strength 16 spline head flange loss of weight bolt Download PDFInfo
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- CN204677571U CN204677571U CN201520193722.3U CN201520193722U CN204677571U CN 204677571 U CN204677571 U CN 204677571U CN 201520193722 U CN201520193722 U CN 201520193722U CN 204677571 U CN204677571 U CN 204677571U
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- lightening grooves
- high strength
- flower keyboard
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Abstract
The utility model provides a kind of high strength 16 spline head flange loss of weight bolt, and it comprises bolt head and stud, between described bolt head and stud, be provided with flange plate; Bolt head comprises the flower keyboard of uniform 16 splines of sidewall, the connection round platform that upper bottom surface diameter is less than bottom surface diameter is also provided with between this flower keyboard and flange plate, the upper bottom surface of this connection round platform abuts with the bottom surface of flower keyboard, connect the bottom surface of round platform to abut with the end face of flange plate, head lightening grooves is had at the end face of flower keyboard, have several to insurance hole group around flower keyboard wall simultaneously, the often pair of insurance hole group comprises insurance hole that two symmetries set up and lays respectively between two splines, and described insurance hole is that through hole is also communicated with head lightening grooves simultaneously.Insurance hole described in this patent offer the anti-loose ability effectively increasing this bolt, and head lightening grooves and bottom lightening grooves set up the own total amount also as much as possible decreasing bolt while ensureing bolt strength, make it press close to usage requirement.
Description
Technical field
The utility model belongs to high-intensity fasteners field, especially relates to a kind of high strength 16 spline head flange loss of weight bolt.
Background technique
Flange bolt because of its head little, Area of bearing is large, reliably locking, is used for high reliability connection area.And the flange bolt the most often used is hexagon flange bolt, but hexagon head twisting is easily skidded, so requiring higher occasion, basic employing 12 angle flange face bolts, are only just using 16 spline head flange bolts when requiring all very high to twisting moment and loss of weight.
16 spline heads, 12 spline heads and bihexagonal head because of its head dummy twisting moment large, twisting is reliable, not easily skids, but manufactures relative difficulty, is generally used for high-performance fastening piece.The situation of same size, 16 spline head twisting area of contact are maximum, and twisting moment is also maximum, and spline head head sizes is minimum, weight is the lightest, performance is also more excellent, and requirements of installation space is minimum, is very suitable for the construction applications of the industries such as the Aero-Space of compact in design.
And at present, existing 16 spline head flange bolts also can ubiquity for the problem laid particular stress on applied environment and field, and then affect the performance of its performance, so design a kind of intensity high simultaneously also lightweight flange bolt be thing urgently to be resolved hurrily.
Summary of the invention
In view of this, the utility model is intended to propose a kind of high strength 16 spline head flange loss of weight bolt, to ensure that flange bolt intensity reduces himself weight and improves its anti-loose ability while high.
For achieving the above object, the technical solution of the utility model is achieved in that
A kind of high strength 16 spline head flange loss of weight bolt, it comprises bolt head and stud, between described bolt head and stud, be provided with flange plate;
Described bolt head comprises the flower keyboard of uniform 16 splines of sidewall, the connection round platform that upper bottom surface diameter is less than bottom surface diameter is also provided with between this flower keyboard and flange plate, the upper bottom surface of this connection round platform abuts with the bottom surface of flower keyboard, connect the bottom surface of round platform to abut with the end face of flange plate, head lightening grooves is had at the end face of flower keyboard, have several to insurance hole group around flower keyboard wall simultaneously, the often pair of insurance hole group comprises insurance hole that two symmetries set up and lays respectively between two splines, and described insurance hole is that through hole is also communicated with head lightening grooves simultaneously;
Described stud comprises polished rod portion and screwed screw part, described flange plate is connected with polished rod portion end face, the bottom surface in described polished rod portion and the end face smooth connection of screw part, and on the bottom sidewall of described screw part, bottom lightening grooves is had along this direction, screw part medial axis.
Further, described head lightening grooves is cone type cell body, and its groove depth is less than the thickness of described flower keyboard.
Further, the medial axis in described insurance hole is vertical with the medial axis of flower keyboard.
Further, described insurance hole group offer number be 1,2 or 4 right.
Further, the bottom sidewall of screw part has two symmetrical bottom lightening grooves and between two bottom lightening grooves, spacing is the major diameter of thread of the screw part of 0.6 times.
Further, the groove depth of described bottom lightening grooves is 0.2 times of the major diameter of thread of screw part.
Further, described bottom lightening grooves offer the pitch that length is 4 to 6 times of screw part.
Further, the metal streamline at described bolt head and Stud connection place is evenly distributed.
Further, described flower keyboard, connect round platform, flange plate and stud medial axis conllinear and be formed in one.
Relative to prior art, a kind of high strength 16 spline head flange loss of weight bolt described in the utility model has following advantage:
(1) the insurance hole on bolt head described in the utility model offer the anti-loose ability effectively increasing this bolt, the effect of indirect loss of weight can also be played simultaneously, and head lightening grooves and bottom lightening grooves set up the own total amount also as much as possible decreasing bolt while ensureing bolt strength, make it press close to usage requirement.
(2) bottom described in the utility model lightening grooves offer position and size is designing in conjunction with stud loading characteristic own, because of when screwing bolts, substantially the stressed top all concentrating on screw part, so both can not affect at the bottom loss of weight that screw part is offered the object that itself intensity can also play loss of weight, simultaneously because its size design coordinates with the screw part of itself, offer bottom lightening grooves to the impact of bolt own so more decrease.
Accompanying drawing explanation
The accompanying drawing forming a part of the present utility model is used to provide further understanding of the present utility model, and schematic description and description of the present utility model, for explaining the utility model, is not formed improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 is a kind of high strength 16 spline head flange loss of weight bolt overall structure schematic diagram described in the utility model embodiment;
Fig. 2 is the side view of a kind of high strength 16 spline head flange loss of weight bolt described in the utility model embodiment;
Fig. 3 is the longitudinal sectional view of the bolt head described in the utility model embodiment;
Fig. 4 is the A-A sectional view in Fig. 1;
Fig. 5 is C place partial enlarged drawing in Fig. 1.
Description of reference numerals:
1-stud, 11-polished rod portion, 12-screw part, lightening grooves bottom 121-, 2-flange plate, 31-flower keyboard, 311-spline, 32-head lightening grooves, 33-insures hole, and 4-connects round platform.
Embodiment
It should be noted that, when not conflicting, the embodiment in the utility model and the feature in embodiment can combine mutually.
Below with reference to the accompanying drawings and describe the utility model in detail in conjunction with the embodiments.
As shown in Figure 1, a kind of high strength 16 spline head flange loss of weight bolt, it comprises bolt head 3 and stud 1, between described bolt head 3 and stud 1, be provided with flange plate 2;
Described bolt head 3 comprises the flower keyboard 31 of uniform 16 splines 311 of sidewall, the connection round platform 4 that upper bottom surface diameter is less than bottom surface diameter is also provided with between this flower keyboard 31 and flange plate 2, the upper bottom surface of this connection round platform 4 abuts with the bottom surface of flower keyboard 31, the bottom surface connecting round platform 4 abuts with the end face of flange plate 2, as shown in Figure 2, to have as conical head lightening grooves 32 and its groove depth is less than the thickness of described flower keyboard 31 at the end face of flower keyboard 31, as shown in Figure 3, have 1 around flower keyboard 31 wall simultaneously, 2 or 4 to insurance hole group, the often pair of insurance hole group comprises insurance hole 33 that two symmetries set up and lays respectively between two splines 311, described insurance hole 33 is also communicated with head lightening grooves 32 for through hole simultaneously, the medial axis in this insurance hole 33 is vertical with the medial axis of flower keyboard 31,
Bolt in the present embodiment is substantially all in use use in a row, after bolt position in a row fixes, safety fuse cutout is penetrated from insurance hole 33, thus by safety fuse cutout, bolt in a row is together in series, so just can effectively improve screw retention ability, and indirectly decrease the weight of bolt body.
As shown in Figures 4 and 5, described stud 1 comprises polished rod portion 11 and screwed screw part 12, described flange plate 2 is connected with polished rod portion 11 end face, the bottom surface in described polished rod portion 11 and the end face smooth connection of screw part 12, and on the bottom sidewall of described screw part 12, two symmetrical bottom lightening grooves 121 are had along this direction, screw part 12 medial axis, and spacing is the major diameter of thread of the screw part 12 of 0.6 times between two bottom lightening grooves 121, or ensure that the groove depth of described bottom lightening grooves 121 is 0.2 times of the major diameter of thread of screw part 12, described bottom lightening grooves 121 offer the pitch that length is 4 to 6 times of screw part 12,
And the position that bottom lightening grooves 121 is offered is because the screw part 12 of itself is substantially all concentrate on top in stressed, and bottom is stressed smaller, thus the intensity offered lightening grooves in bottom and both can not affect itself can also reach the object of loss of weight, the pitch that the length of bottom lightening grooves 121 rests in 4 to 6 times is exactly the extent of injury in order to reduce to greatest extent bolt strength own.
Described bolt head 3 is evenly distributed with the metal streamline of stud 1 joint, and has the cementation zone of appropriate thickness, thus the fatigue life of elevator bolt;
Described flower keyboard 31, connect round platform 4, flange plate 2 and stud 1 medial axis conllinear and be formed in one;
Meanwhile, whole bolt is by refractory alloy manufactures such as GH738, and bolt has excellent yield strength below 650 DEG C, and its product tensile strength, more than 1300MPa, is suitable for the sound anatomical connectivity of high capacity;
The manufacture specification of above-mentioned overall bolt can increase the intensity of itself, can also meet the condition of loss of weight simultaneously, as long as the bolt of high strength could realize offering above loss of weight design.
This bolt should support the use by the self-locking nut identical with strength grade.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (9)
1. a high strength 16 spline head flange loss of weight bolt, is characterized in that: comprise bolt head (3) and stud (1), be provided with flange plate (2) between described bolt head (3) and stud (1);
Described bolt head (3) comprises the flower keyboard (31) of uniform 16 splines (311) of sidewall, the connection round platform (4) that upper bottom surface diameter is less than bottom surface diameter is also provided with between this flower keyboard (31) and flange plate (2), the upper bottom surface of this connection round platform (4) abuts with the bottom surface of flower keyboard (31), the bottom surface connecting round platform (4) abuts with the end face of flange plate (2), head lightening grooves (32) is had at the end face of flower keyboard (31), have several to insurance hole group around flower keyboard (31) wall simultaneously, the often pair of insurance hole group comprises insurance hole (33) that two symmetries set up and lays respectively between two splines (311), described insurance hole (33) is also communicated with head lightening grooves (32) for through hole simultaneously,
Described stud (1) comprises polished rod portion (11) and screwed screw part (12), described flange plate (2) is connected with polished rod portion (11) end face, the bottom surface of described polished rod portion (11) and the end face smooth connection of screw part (12), and on the bottom sidewall of described screw part (12), bottom lightening grooves (121) is had along this screw part (12) direction, medial axis.
2. a kind of high strength 16 spline head flange loss of weight bolt according to claim 1, is characterized in that: described head lightening grooves (32) is cone type cell body, and its groove depth is less than the thickness of described flower keyboard (31).
3. a kind of high strength 16 spline head flange loss of weight bolt according to claim 1, is characterized in that: the medial axis of described insurance hole (33) is vertical with the medial axis of flower keyboard (31).
4. a kind of high strength 16 spline head flange loss of weight bolt according to claim 1, is characterized in that: described insurance hole group offer number be 1,2 or 4 right.
5. a kind of high strength 16 spline head flange loss of weight bolt according to claim 1, is characterized in that: on the bottom sidewall of screw part (12), have two symmetrical bottom lightening grooves (121) and between two bottoms lightening grooves (121), spacing is the major diameter of thread of the screw part (12) of 0.6 times.
6. a kind of high strength 16 spline head flange loss of weight bolt according to claim 1, is characterized in that: the groove depth of described bottom lightening grooves (121) is 0.2 times of the major diameter of thread of screw part (12).
7. a kind of high strength 16 spline head flange loss of weight bolt according to claim 1, is characterized in that: described bottom lightening grooves (121) offer the pitch that length is 4 to 6 times of screw part (12).
8. a kind of high strength 16 spline head flange loss of weight bolt according to claim 1, is characterized in that: described bolt head (3) is evenly distributed with the metal streamline of stud (1) joint.
9. a kind of high strength 16 spline head flange loss of weight bolt according to claim 1, is characterized in that: described flower keyboard (31), connect round platform (4), flange plate (2) and stud (1) medial axis conllinear and be formed in one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520193722.3U CN204677571U (en) | 2015-04-01 | 2015-04-01 | A kind of high strength 16 spline head flange loss of weight bolt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520193722.3U CN204677571U (en) | 2015-04-01 | 2015-04-01 | A kind of high strength 16 spline head flange loss of weight bolt |
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| CN204677571U true CN204677571U (en) | 2015-09-30 |
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| CN201520193722.3U Active CN204677571U (en) | 2015-04-01 | 2015-04-01 | A kind of high strength 16 spline head flange loss of weight bolt |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107420407A (en) * | 2017-06-13 | 2017-12-01 | 贵州航天精工制造有限公司 | A kind of stay-bolt for coupling between parts or body |
| CN109099044A (en) * | 2018-10-19 | 2018-12-28 | 湖南工业大学 | A kind of bolt connection of third rail train pantagraph current collector slide plate |
| CN113211367A (en) * | 2020-01-21 | 2021-08-06 | 中国航发商用航空发动机有限责任公司 | Multi-linkage lock ring mounting tool and mounting method |
| CN114396422A (en) * | 2022-01-28 | 2022-04-26 | 航天精工股份有限公司 | Reinforced dodecagonal-head bolt and machining method |
-
2015
- 2015-04-01 CN CN201520193722.3U patent/CN204677571U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107420407A (en) * | 2017-06-13 | 2017-12-01 | 贵州航天精工制造有限公司 | A kind of stay-bolt for coupling between parts or body |
| CN109099044A (en) * | 2018-10-19 | 2018-12-28 | 湖南工业大学 | A kind of bolt connection of third rail train pantagraph current collector slide plate |
| CN113211367A (en) * | 2020-01-21 | 2021-08-06 | 中国航发商用航空发动机有限责任公司 | Multi-linkage lock ring mounting tool and mounting method |
| CN113211367B (en) * | 2020-01-21 | 2023-02-03 | 中国航发商用航空发动机有限责任公司 | Multi-linkage lock ring mounting tool and mounting method |
| CN114396422A (en) * | 2022-01-28 | 2022-04-26 | 航天精工股份有限公司 | Reinforced dodecagonal-head bolt and machining method |
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