CN218118275U

CN218118275U - T-shaped bolt capable of resisting transverse shearing force

Info

Publication number: CN218118275U
Application number: CN202221538317.7U
Authority: CN
Inventors: 罗良泽
Original assignee: Ningbo Lingqi Hardware Industry Co ltd
Current assignee: Ningbo Lingqi Hardware Industry Co ltd
Priority date: 2022-06-20
Filing date: 2022-06-20
Publication date: 2022-12-23
Anticipated expiration: 2032-06-20

Abstract

The utility model discloses a T type bolt of anti horizontal shearing force, including cylinder screw thread portion to and the nut head, wherein, be equipped with the square neck between cylinder screw thread portion and nut head, the square neck appearance is the rectangular bodily form, and the thickness A of square neck is greater than half of nut head thickness B, is less than nut head thickness B, and the width of square neck equals with the width of nut head, and the length of square neck is greater than the width of square neck, is less than 1.5 times width of square neck, is equipped with the first fillet of square neck and square neck second fillet in the edge department of square neck. Be equipped with the square neck between cylinder screw portion and nut head, the square neck is thicker than traditional cylinder root, in operation, when receiving horizontal shearing force, makes the horizontal shearing force that originally acts on the cylinder root, bears by the square neck, because the square neck can bear bigger horizontal shearing force for original cylinder root, so be difficult to can bending deformation to the steadiness of the component of assurance installation above that.

Description

T-shaped bolt capable of resisting transverse shearing force

Technical Field

The utility model belongs to the manufacturing field of traffic track fastener especially relates to a many tooth T type bolts.

Background

Embedding channel steel: the embedded part is an embedded part for buildings, wherein embedded channel steel is pre-arranged in concrete parts such as tunnels and subway beams in a civil engineering stage, and T-shaped bolts are placed in cavities of cold-rolled channel steel and then rotated by 90 degrees, so that the long edges of nut heads of the T-shaped bolts can be reversely hooked on the cavities of the cold-rolled channel steel, and then a component to be installed is sleeved into a screw rod of the T-shaped bolts and finally fixed by nuts matched with gaskets and the like.

In practical engineering application, the embedded channel steel is horizontally and transversely placed or vertically and longitudinally placed according to the requirements of a member to be installed. When the embedded channel steel is vertically and longitudinally arranged, particularly when some more important components are to be fixed, the grooves in the embedded channel steel are both toothed, and the T-shaped bolts matched with the grooves are also toothed, and when the embedded channel steel and the T-shaped bolts are installed, the teeth are meshed with each other to prevent the slippage (see figure 5). When pre-buried channel-section steel was vertical vertically placed, T type bolt installation back, the cylinder root of its screw rod can receive the effect of horizontal shearing force (see figure 4), in traffic track's practical application, because operating condition is abominable, often has high frequency vibration, operating time has been of a specified duration, the cylinder root of some T type bolts can warp and arouse the bending under the effect of receiving horizontal shearing force, the influence is installed the steadiness of the component above that.

Disclosure of Invention

An object of the utility model is to provide an anti transverse shear force's T type bolt to solve the problem that proposes in the above-mentioned background art.

In order to solve the technical problem, the utility model discloses a realize through following technical measure: the utility model provides an anti transverse shear force's T type bolt, is including the cylinder screw thread portion that has the external screw thread to and the nut head, wherein cylinder screw thread portion with be equipped with the square neck between the nut head, the square neck appearance is the rectangular bodily form, the thickness A of square neck is greater than half of nut head thickness B is lighter than nut head thickness B, the width of square neck with the width of nut head equals, the length of square neck is greater than the width of square neck is lighter than 1.5 times the width of square neck the edge department of square neck is equipped with the first fillet of square neck and square neck second fillet.

Compared with the prior art, the utility model has the advantages of: be equipped with the square neck of cuboid appearance between cylinder screw portion and nut head, the thickness A of square neck is greater than nut head thickness B's half, be less than nut head thickness B, the width of square neck equals with the width of nut head, the length of square neck is greater than the width of nut head, be less than 1.5 times width of nut head, it is thick than traditional cylinder root to make the square neck, in operation, when receiving horizontal shearing force, make the horizontal shearing force that originally acts on the cylinder root, bear by the square neck, because the square neck can bear bigger horizontal shearing force for original cylinder root, so be difficult to can bending deformation, thereby guarantee the steadiness of the component of installing above that.

As an improvement of the utility model, the edge of the square neck is provided with a first round angle of the square neck and a second round angle of the square neck. The purpose of selecting the design is as follows: in order to make the T-shaped bolt buckle into the embedded channel steel better.

As an improvement of the utility model, the edge department at two diagonal angles of nut head is equipped with the first fillet of head and head second fillet respectively, the first fillet of square neck on the square neck with the first fillet direction of head is the same, the square neck second fillet on the square neck with head second fillet direction is the same. The purpose of selecting the design is as follows: the edges of two opposite angles of the head of the nut are respectively provided with a first head fillet and a second head fillet so as to enable the T-shaped bolt to be better buckled into the embedded channel steel; the first fillet of square neck with the first fillet direction of head is the same, square neck second fillet with head second fillet direction is the same, two liang of corresponding promptly, the clock direction is the same, if not so designed, the fillet can misplace, just so lose the meaning of design fillet, the design of these four fillets is exactly in order to let T type bolt buckle into pre-buried channel-section steel better, because the notch width of pre-buried channel-section steel is the error in fact, when notch width is on the small side, do not have under the condition of fillet, T type bolt probably buckles not to advance, after having the fillet, just can buckle into.

As an improvement of the present invention, the square neck is integrally formed with the cylindrical thread portion and the nut head. The purpose of selecting the design is as follows: the integral forming has low manufacturing cost and is convenient.

As an improvement of the present invention, the top surface of the cylindrical screw portion is provided with a positioning direction mark. The purpose of selecting the design is as follows: the positioning direction mark is designed to know whether the T-shaped bolt is buckled with the embedded channel steel fully or not, and after the T-shaped bolt is buckled, the sight of the nut head is blocked by the notch, so that the T-shaped bolt can be identified only by the positioning direction mark designed on the top surface of the bolt.

As an improvement of the utility model, the bottom surface of nut head near cylinder screw thread portion is equipped with the meshing tooth, the appearance of meshing tooth is triangle-shaped. The purpose of selecting the design is as follows: the bottom surface of the nut head close to the cylindrical threaded part is designed into meshing teeth which can be matched with the tooth form at the notch of the embedded channel steel, and the nut head is matched with the embedded channel steel for use, so that the slippage is prevented.

Drawings

The accompanying drawings, which form a part hereof, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention. In the drawings:

fig. 1 is a perspective view of a T-shaped bolt for resisting transverse shear force according to the present invention 1.

Fig. 2 is a schematic view of the T-bolt of the present invention for resisting transverse shear force.

Fig. 3 is a cross-sectional view of the T-bolt of the present invention for resisting transverse shear force.

Fig. 4 is a cross-sectional view 1 of a conventional T-bolt in a pre-embedded channel.

Fig. 5 is a cross-sectional view 2 of a conventional T-bolt in a pre-embedded channel.

Fig. 6 is a perspective view of the T-shaped bolt of the present invention for resisting transverse shear force.

Description of the reference numerals: 1. a cylindrical threaded portion; 2. a nut head; 3. a square neck; 4. embedding channel steel; 5. the root of the cylinder; 6. positioning a direction mark; 7. a square neck first fillet; 8. a square neck second fillet; 9. a first head fillet; 10. a second head fillet; 11. meshing teeth; 12. an engaging portion.

Detailed Description

Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting 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. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Wherein the terms "first position" and "second position" are two different positions.

Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "secured" are to be construed broadly and encompass, for example, both fixed and removable connections; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.

Unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may include the first feature being in direct contact with the second feature, or may include the first feature being in direct contact with the second feature but being in contact with the second feature by another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings.

Example 1

Referring to fig. 1-6, the T-shaped bolt for resisting transverse shear force according to the present embodiment includes a cylindrical threaded portion 1 having an external thread, and a nut head 2, wherein the external diameter of the thread of the cylindrical threaded portion 1 is M12, the nut head 2 is disposed at the rear end of the cylindrical portion, the length and width of the nut head 2 are 41.5mm × 28mm, and the thickness of the nut head 2 is 18mm, 5 sets of meshing teeth 11 (see fig. 6) uniformly arranged are integrally extended from the surface of the nut head 2 near the cylindrical portion side, the tooth shape of the meshing teeth 11 is triangular (see fig. 5), and the meshing teeth can be matched with the tooth shape at the notch of the embedded channel steel 4, and can be used in a matching manner to prevent slippage.

Integrated into one piece has square neck 3 between cylinder screw thread portion 1 and nut head 2, please refer to fig. 2, 3 appearances of square neck are the rectangular bodily form, the thickness A of square neck 3 does three fourths of nut head 2 thickness B, and thickness is 13.5mm promptly, the width of square neck 3 with the width of nut head 2 equals, the length of square neck 3 does 1.2 times width of square neck 3 the edge department of square neck 3 is equipped with the first fillet of square neck 7 and square neck second fillet 8, and the radius of first fillet and second fillet is R15.

Be equipped with first fillet 9 of head and head second fillet 10 respectively in the edge department of 2 diagonal angles on the nut head, the first fillet 7 of square neck with the first fillet 9 directions of head are the same, and turning portion promptly is in about four points half clock position, square neck second fillet 8 with the second fillet 10 directions of head are the same, and turning portion promptly is in about ten o' clock position. The design of these four corresponding fillets is exactly in order to let T type bolt buckle into embedded channel 4 better, because embedded channel 4's notch width is the error in fact, when notch width is on the small side, does not have under the condition of fillet, and T type bolt probably buckles not to advance, has had the fillet after, just can buckle into.

In the embodiment of the present invention, the positioning direction mark 6 is provided in a line shape on the top surface of the cylindrical threaded portion 1, and the direction of the line shape is the same as the long side direction of the nut head 2. The mark is designed to know whether the T-shaped bolt is fastened on the embedded channel steel 4 to the maximum extent, and after the T-shaped bolt is fastened, the sight of the nut head 2 is blocked by the notch, so that the T-shaped bolt can be recognized only by the straight positioning direction mark 6 designed on the top surface of the bolt.

The T type bolt of anti transverse shear force that this embodiment provided compares with prior art, the utility model has the advantages of: be equipped with the square neck 3 of cuboid appearance between cylinder screw portion 1 and nut head 2, and square neck 3 is thicker than traditional cylinder root 5, in operation, after pre-buried channel-section steel is detained into to T type bolt, tooth intermeshing between them forms meshing portion 12, can receive horizontal shearing force in square neck 3 department, originally act on traditional cylinder root 5's horizontal shearing force promptly, bear by square neck 3, because square neck 3 can bear bigger horizontal shearing force for original cylinder root 5, so be difficult to can bending deformation, thereby guarantee the steadiness of the component of installing above that.

The foregoing is illustrative of the preferred embodiments of the present invention only, and is not to be construed as limiting the claims. The present invention is not limited to the above embodiments, and the specific structure thereof is allowed to be changed. All changes which come within the scope of the invention as defined by the independent claims are to be embraced within their scope.

Claims

1. A T-bolt resistant to transverse shear forces, comprising a cylindrical threaded portion (1) with an external thread, and a nut head (2), characterized in that: cylinder screw thread portion (1) with be equipped with square neck (3) between nut head (2), square neck (3) appearance is the rectangular bodily form, the thickness A of square neck (3) is greater than half of nut head (2) thickness B is less than nut head (2) thickness B, the width of square neck (3) with the width of nut head (2) equals, the length of square neck (3) is greater than the width of nut head (2), is less than 1.5 times width of nut head (2) the edge department of square neck (3) is equipped with square neck first fillet (7) and square neck second fillet (8).

2. A T-bolt as claimed in claim 1 which is resistant to transverse shear forces and which is characterized by: the edge department at two diagonal angles of nut head (2) is equipped with first fillet of head (9) and head second fillet (10) respectively, the first fillet of square neck (7) on square neck (3) with the first fillet of head (9) direction is the same, square neck second fillet (8) on square neck (3) with head second fillet (10) direction is the same.

3. A T-bolt as claimed in claim 1 which is resistant to transverse shear forces and which is characterized by: the square neck (3), the cylindrical thread part (1) and the nut head (2) are integrally formed.

4. A T-bolt as claimed in claim 1 which is resistant to transverse shear forces and which is characterized by: the top end surface of the cylindrical threaded part (1) is provided with a positioning direction mark (6).

5. A T-bolt as claimed in claim 1 which is resistant to transverse shear forces and which is characterized by: the bottom surface of nut head (2) near cylinder screw portion (1) is equipped with meshing tooth (11), the appearance of meshing tooth (11) is the triangle-shaped form.