CN213598375U - High-strength through bolt - Google Patents

Abstract

The utility model discloses a high strength through bolt, including the shank of bolt, the left side fixedly connected with left side screw thread section of bolt, the first fine thread of left side screw thread section lateral wall fixedly connected with, one side that left side screw thread section lateral wall is close to the shank of bolt is fixed has seted up first tool withdrawal groove, the one end lateral wall fixedly connected with fixed stop that the shank of bolt is close to the left side screw thread section, the one end fixedly connected with right side screw thread section of left side screw thread section is kept away from to the shank of bolt, the fine thread of right side screw thread section lateral wall fixedly connected with second, one side that right side screw thread section lateral wall is close to the shank of bolt is fixed has. The utility model discloses a high strength through bolt, structural design is reasonable, and the bolt that prevents that can be fine is not hard up with nut complex, can also slow down stress concentration phenomenon, improve the fatigue resistance ability of bolt, improves the life of bolt, convenient to use, and the fastening effect is better.

Description

High-strength through bolt

Technical Field

The utility model relates to a bolt fastener technical field especially relates to a high strength through bolt.

Background

China is a large fastener producing country, the fastener yield is the first world, but fasteners produced at present at home are mostly low-strength fasteners, and analysis is carried out according to the production and marketing demand prediction and transformation upgrade analysis report of the fastener industry in China in 2014-2018 published by the prospective industry research institute: at present, more than 1 million enterprises for producing fasteners in China exist, but the enterprise with low production strength occupies 70 percent of the whole, if the technical content of the product is not improved and the cost is not reduced, the enterprises can be replaced by countries with lower production cost (such as Vietnam or India), and the enterprises of the fasteners in China face serious economic crisis.

Most of the existing through bolts are fasteners with low strength, the fastening effect is not ideal, and the through bolts are used for a long time

The bolt is easy to loosen, the strength and the stability of the bolt during fixing are poor, whether loosening occurs or not needs to be checked regularly, time and labor are wasted, the use is inconvenient, meanwhile, the stress resistance and the fatigue resistance of the through bolt body are low, the service life is short, in order to improve the current situation of high yield and low quality of domestic fasteners, the structure of the existing bolt needs to be improved, and an ideal use effect is achieved.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art and providing a high-strength through bolt.

In order to achieve the above purpose, the utility model adopts the following technical scheme: a high-strength through bolt comprises a bolt body, wherein a left thread section is fixedly connected to the left end of the bolt body, a first fine thread is fixedly connected to the outer side wall of the left thread section, a first tool withdrawal groove is fixedly formed in one side, close to the bolt body, of the outer side wall of the left thread section, a fixed baffle is fixedly connected to the outer side wall of one end, close to the left thread section, of the bolt body, a right thread section is fixedly connected to one end, away from the left thread section, of the bolt body, a second fine thread is fixedly connected to the outer side wall of the right thread section, a second tool withdrawal groove is fixedly formed in one side, close to the bolt body, of the outer side wall of one end, close to the right thread section, of the bolt body is provided with a movable baffle in a sliding mode, a hexagon nut is fixedly connected to the outer side wall, and a circular ring seat is fixedly arranged between the movable baffle and the hexagonal head nut and close to the hexagonal head nut.

As a further description of the above technical solution:

and a transition fillet is fixedly arranged at the joint of the fixed baffle and the bolt body.

As a further description of the above technical solution:

and the outer wall of the bolt body is sleeved with a first gasket in a sliding manner outside the fixed baffle.

As a further description of the above technical solution:

one end of the retaining gasket, which is far away from the movable baffle, is fixedly connected with a circular ring tooth groove plate.

As a further description of the above technical solution:

the one end that the hexagon head nut was kept away from to the ring seat is fixed and is provided with a plurality of tooth heads, a plurality of tooth heads and ring gullet board mesh mutually.

As a further description of the above technical solution:

and one end of the hexagon nut close to the circular ring seat is fixedly connected with a circular ring pad.

As a further description of the above technical solution:

the first fine thread on the left thread section extends to the first tool withdrawal groove from the end part of the first fine thread, and the second fine thread on the right thread section extends to the second tool withdrawal groove from the end part of the second fine thread.

The utility model discloses following beneficial effect has:

the utility model provides a pair of high strength through bolt, structural design is reasonable, adopts the setting of preventing back piece in nut installation fastening department, and the bolt that prevents that can be fine is not hard up with nut complex, avoids the bolt not hard up problem of bringing the potential safety hazard.

The annular tool withdrawal grooves arranged on the two sides of the bolt body can facilitate the processing of the threads on the two sides of the bolt during the forming process, the bolt cannot be damaged, the stress concentration phenomenon can be reduced, the fatigue resistance of the bolt can be improved, and therefore the service life of the bolt is prolonged.

The transition fillet that the junction of fixed stop and the bolt body set up can strengthen the internal stress of junction, makes the junction difficult appearance fracture when receiving the bending or load impact, and the screw thread adopts the fine thread of higher precision, makes the fixed of bolt and nut inseparabler, and the result of use is better.

Drawings

Fig. 1 is a structural view of a bolt body of a high-strength through bolt provided by the present invention;

fig. 2 is an assembly structure view of a high-strength through bolt provided by the present invention;

FIG. 3 is an enlarged view of FIG. 1-A in accordance with the present invention;

fig. 4 is a structure view of the anti-receding portion of the high-strength through bolt according to the present invention.

Illustration of the drawings:

1. a bolt body; 2. fixing a baffle plate; 3. a left threaded section; 4. a first fine thread; 5. a first tool withdrawal groove; 6. a second tool withdrawal groove; 7. a right thread segment; 8. a second fine thread; 9. a movable baffle; 10. a first gasket; 11. a backstop pad; 12. a circular ring seat; 13. a hexagonal head nut; 14. transition fillets; 15. a circular ring fluted plate; 16. a tooth head; 17. a circular ring pad.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, and furthermore, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1-4, the present invention provides an embodiment: a high-strength through bolt comprises a bolt body 1, wherein the left end of the bolt body 1 is fixedly connected with a left thread section 3, the outer side wall of the left thread section 3 is fixedly connected with a first fine thread 4, one side of the outer side wall of the left thread section 3, which is close to the bolt body 1, is fixedly provided with a first tool withdrawal groove 5, the outer side wall of one end of the bolt body 1, which is close to the left thread section 3, is fixedly connected with a fixed baffle 2, one end of the bolt body 1, which is far away from the left thread section 3, is fixedly connected with a right thread section 7, the outer side wall of the right thread section 7 is fixedly connected with a second fine thread 8, one side of the outer side wall of the right thread section 7, which is close to the bolt body 1, is fixedly provided with a second tool withdrawal groove 6, the outer side wall of one end of the bolt body 1, which is close to the right thread section 7, a circular ring seat 12 is fixedly arranged between the movable baffle 9 and the hexagonal head nut 13 and close to the hexagonal head nut 13.

Fixed stop 2 is provided with transition fillet 14 with the fixed transition fillet that is provided with of 1 junction of the bolt body, 1 outer wall of the bolt body is equipped with first gasket 10 in the fixed stop 2 outside slip cap, the one end fixedly connected with ring fluted plate 15 of adjustable fender 9 is kept away from to stopping gasket 11, the fixed a plurality of tooth heads 16 that are provided with of one end that hexagonal head nut 13 was kept away from to ring seat 12, a plurality of tooth heads 16 mesh with ring fluted plate 15 mutually, hexagonal head nut 13 is close to the one end fixedly connected with ring pad 17 of ring seat 12, first fine thread 4 on the left hand thread section 3 extends to first tool withdrawal groove 5 department by its tip, the fine thread 8 of second on the right hand thread section 7 extends to second tool withdrawal groove 6 department by its tip.

The working principle is as follows: when the through bolt is used, a bolt body 1 penetrates through the connecting piece, a fixed baffle 2 blocks one end of the connecting piece, then a movable baffle 9, a backstop gasket 11 and a circular ring seat 12 are sleeved on the other end of the bolt body 1 in a sliding mode, finally a hexagon head nut 13 is screwed on a right thread section 7 through a second fine thread 8, the movable baffle 9 and the fixed baffle 2 fasten the bolt body 1 on the connecting piece after being screwed, the fastening effect is achieved, a circular ring tooth groove plate 15 on the backstop gasket 11 is meshed with a tooth head 16 on the circular ring seat 12, the backstop effect is achieved, the bolt and the nut can be well prevented from being matched and loosened, the problem that potential safety hazards are caused by bolt loosening is solved, a nut is screwed on a first fine thread 4 of a left thread section 3 to further fasten the bolt, the first gasket 10 can play a role in protecting the fixed baffle 2, a transition fillet 14 can enhance internal stress at the connecting part, so that the connection is not easy to break when being bent or impacted by load.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.

Claims (7)

1. A high strength through bolt, includes the bolt body (1), its characterized in that: the bolt body (1) left end fixedly connected with left thread section (3), left side thread section (3) lateral wall fixedly connected with first fine thread (4), one side that left side thread section (3) lateral wall is close to bolt body (1) has fixedly seted up first tool withdrawal groove (5), one end lateral wall fixedly connected with fixed stop (2) that bolt body (1) is close to left thread section (3), the one end fixedly connected with right thread section (7) of left side thread section (3) are kept away from in bolt body (1), right side thread section (7) lateral wall fixedly connected with second fine thread (8), one side fixed the having seted up second tool withdrawal groove (6) that right side thread section (7) lateral wall is close to bolt body (1), the one end lateral wall slip that bolt body (1) is close to right thread section (7) is provided with adjustable stop (9), right side thread section (7) lateral wall passes through second fine thread (8) fixedly connected with hexagon nut (13) The anti-loosening device is characterized in that a stopping gasket (11) is fixedly arranged between the movable baffle plate (9) and the hexagonal head nut (13) close to the movable baffle plate (9), and a circular ring seat (12) is fixedly arranged between the movable baffle plate (9) and the hexagonal head nut (13) close to the hexagonal head nut (13).

2. A high strength through bolt according to claim 1, wherein: and a transition fillet (14) is fixedly arranged at the joint of the fixed baffle (2) and the bolt body (1).

3. A high strength through bolt according to claim 1, wherein: the outer wall of the bolt body (1) is sleeved with a first gasket (10) in a sliding mode on the outer side of the fixed baffle (2).

4. A high strength through bolt according to claim 1, wherein: one end of the retaining gasket (11) far away from the movable baffle (9) is fixedly connected with a circular ring gear groove plate (15).

5. A high strength through bolt according to claim 1, wherein: a plurality of tooth heads (16) are fixedly arranged at one end, far away from the hexagonal head nut (13), of the circular ring seat (12), and the tooth heads (16) are meshed with the circular ring toothed groove plate (15).

6. A high strength through bolt according to claim 1, wherein: and one end of the hexagonal head nut (13) close to the circular ring seat (12) is fixedly connected with a circular ring pad (17).

7. A high strength through bolt according to claim 1, wherein: the first fine thread (4) on the left thread section (3) extends to the first tool withdrawal groove (5) from the end part thereof, and the second fine thread (8) on the right thread section (7) extends to the second tool withdrawal groove (6) from the end part thereof.

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