CN218440123U

CN218440123U - Double-end connection self-tapping cement bolt

Info

Publication number: CN218440123U
Application number: CN202222672176.4U
Authority: CN
Inventors: 车传云
Original assignee: Ningbo Longde Hardware Manufacturing Co ltd
Current assignee: Ningbo Longde Hardware Manufacturing Co ltd
Priority date: 2022-10-11
Filing date: 2022-10-11
Publication date: 2023-02-03
Anticipated expiration: 2032-10-11

Abstract

The utility model discloses a self tapping cement bolt is connected to double-end, including lower screw rod and last screw rod, draw-in groove has been seted up to the inside of lower screw rod, the lower extreme of going up the screw rod is connected with the extension rod, the extension rod extends to the inside of draw-in groove down, the lower extreme of extension rod is fixed with the spacing piece. In the utility model, the lower clamping groove is arranged in the lower screw rod, and the limiting block and the extension rod are arranged in the lower clamping groove, so that when the length of the bolt is required to be extended, the upper screw rod can be rotated along the upper end of the lower screw rod, the extension rod is driven by the upper screw rod to rotate along the inner part of the lower clamping groove and extend out of the lower clamping groove, and the overall length of the bolt is increased; through seting up the through-hole in the inside of last screw rod to at the internal connection location awl of through-hole, utilize to rotate the inside rebound that the cap can drive connecting rod and extrusion platform edge last draw-in groove, utilize the extrusion platform to the location awl, thereby can let the location awl follow the through-hole in stretch out, with the bolt fastening, prevent that it from taking place not hard up.

Description

Double-end connection self-tapping cement bolt

Technical Field

The utility model relates to a bolt technical field, in particular to self tapping cement bolt is connected to double-end.

Background

The stud is used for connecting the fixed link function of machinery, and both ends of the stud are provided with threads and a middle screw rod. The method is generally used for mining machinery, bridges, automobiles, motorcycles, boiler steel structures, tower cranes, large-span steel structures, large buildings and the like. The self-tapping bolt is characterized in that corresponding threads are tapped, drilled, extruded and pressed on a solidified body by the threads of the self-tapping bolt, so that the self-tapping bolt is tightly matched with the solidified body. Stud connection self tapping bolt, be stud and self tapping bolt's combination, it is more convenient to let the bolt in the use, current stud connection self tapping bolt is when using, because the length of bolt is limited, can cause the bolt to be unable to use if meet the article that surpasss the length of bolt, need splice the bolt, thereby the length of extension bolt, but the concatenation process need be with the help of the welding machine, not only the concatenation process is comparatively loaded down with trivial details, and the bolt after the concatenation is probably not enough in the intensity of concatenation department, cause the fracture easily, for this reason, a stud connection self tapping cement bolt is provided.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a main aim at provides a self tapping cement bolt is connected to double-end can effectively solve the problem in the background art.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a self tapping cement bolt is connected to double-end, includes lower screw rod, draw-in groove has been seted up down to the inside of lower screw rod, the upper end of lower screw rod is provided with the screw rod, the lower extreme of going up the screw rod is connected with the extension rod, the integrated forging shaping between extension rod and the last screw rod, the extension rod extends to the inside of draw-in groove down, pass through threaded connection between extension rod and the lower screw rod, the lower extreme of extension rod passes through welded fastening has the stopper, stopper activity inlay card is in the inside of draw-in groove down, the surface of stopper and the inner wall laminating of draw-in groove down, the chip groove has all been seted up on the surface of screw rod and last screw rod down, the inner wall of chip groove is glossy cambered surface, the quantity of chip groove is four groups, and four groups of chip grooves are arranged along the equidistant surface of screw rod and last screw rod down.

Preferably, an upper clamping groove is formed in the upper screw rod, a connecting rod is arranged in the upper clamping groove, the connecting rod penetrates through the upper screw rod from the inside of the upper clamping groove, the connecting rod is connected with the upper screw rod through threads, a rotating cap is fixed to the top of the connecting rod through welding, and a hexagonal groove is formed in the top of the rotating cap.

Preferably, the bottom of the connecting rod is fixedly provided with an extrusion table through welding, and the extrusion table is connected with the upper clamping groove in a sliding manner.

Preferably, the inner wall of the upper clamping groove is provided with two through holes, the through holes penetrate through the upper screw rod from the inside of the upper clamping groove, and the two through holes are arranged in bilateral symmetry.

Preferably, the inside connection of through-hole has the location awl, location awl and through-hole sliding connection, the front end of location awl is the toper structure, the terminal laminating with the surface of extrusion platform of location awl.

Preferably, the surfaces of the lower screw rod and the upper screw rod are respectively sleeved with a gasket, one side of each gasket is connected with a nut, and the nut is connected with the lower screw rod and the upper screw rod through threads.

Preferably, the lower end of the lower screw is provided with a conical drill, and the conical drill and the lower screw are integrally forged and molded.

Compared with the prior art, the utility model discloses following beneficial effect has:

(1) The utility model discloses in, offer down the draw-in groove through the inside of screw rod under to the inside of draw-in groove sets up stopper and extension rod under, if meet when exceeding the length of the article of the length of bolt and need prolong the length of bolt, can follow the upper end of screw rod down and rotate the screw rod, utilize the screw rod to drive the extension rod along the inside rotation of draw-in groove down, and extend out from the draw-in groove down, thereby increase the whole length of bolt, need not splice the bolt in addition, can guarantee the joint strength of bolt.

(2) The utility model discloses in, set up the through-hole through the inside at last screw rod to at the internal connection location awl of through-hole, utilize to rotate the inside rebound that the cap can drive connecting rod and extrusion platform edge last draw-in groove, utilize the extrusion of extrusion platform to the location awl, thereby can let the location awl follow the through-hole in stretch out, with the bolt fastening, prevent that it from taking place not hard up.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.

The structure, ratio, size and the like shown in the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by people familiar with the technology, and are not used for limiting the limit conditions which can be implemented by the present invention, so that the present invention has no technical essential significance, and any structure modification, ratio relationship change or size adjustment should still fall within the scope which can be covered by the technical content disclosed by the present invention without affecting the efficacy and the achievable purpose of the present invention.

Fig. 1 is a schematic view of the overall structure of a double-headed self-tapping cement bolt according to the present invention;

fig. 2 is a cross-sectional view of the double-headed self-tapping cement bolt of the present invention;

FIG. 3 is a schematic view of the structure of the upper screw of the double-headed self-tapping cement bolt of the present invention;

fig. 4 is an assembly drawing of the connecting rod, the extrusion table and the positioning cone in the double-head connection self-tapping cement bolt.

In the figure: 1. a lower screw rod; 2. a conical drill bit; 3. a lower clamping groove; 4. an upper screw rod; 5. an extension pole; 6. a limiting block; 7. an upper clamping groove; 8. a through hole; 9. positioning a cone; 10. an extrusion table; 11. a connecting rod; 12. rotating the cap; 13. a chip groove; 14. a nut; 15. and (7) a gasket.

Detailed Description

The present invention is described in terms of specific embodiments, and other advantages and benefits of the present invention will become apparent to those skilled in the art from the following disclosure. 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.

As shown in fig. 1-4, a self tapping cement bolt is connected to double-end, including lower screw rod 1, the lower extreme of lower screw rod 1 is provided with conical bit 2, conveniently let the bolt get into in the cement through conical bit 2, conical bit 2 forges the shaping with lower screw rod 1 integration, can guarantee the stability of drill bit, lower draw-in groove 3 has been seted up to lower screw rod 1's inside, lower screw rod 1's upper end is provided with upper screw rod 4, upper screw rod 4's lower extreme is connected with extension rod 5, the integration forges the shaping between extension rod 5 and the upper screw rod 4, can guarantee the intensity of extension rod 5, prevent that extension rod 5 and upper screw rod 4 junction from breaking, extension rod 5 extends to the inside of lower draw-in groove 3, through threaded connection between extension rod 5 and the lower screw rod 1, extension rod 5's lower extreme is through welded fastening spacing piece 6, stopper 6 activity inlay card is in the inside of lower draw-in groove 3, stopper 6 surface and the inner wall laminating of lower draw-in groove 3, through stopper 6 cooperation lower draw-in groove 3, can prevent upper screw rod 4 and lower screw rod 1 from separating.

When using the automatic cement bolt in-process of double-end, if the length of bolt is not enough, can follow the upper end of lower screw 1 and rotate upper screw 4, drive extension rod 5 through upper screw 4 and follow 3 inside rotations of draw-in groove down to extend out from draw-in groove 3 in down, thereby increase the whole length of bolt, can satisfy different length requirements.

Go up the inside of screw rod 4 and seted up last draw-in groove 7, the inside of going up draw-in groove 7 is provided with connecting rod 11, connecting rod 11 runs through in last screw rod 4 from the inside of last draw-in groove 7, pass through threaded connection between connecting rod 11 and the last screw rod 4, conveniently follow the position of the inside adjustment connecting rod 11 of last draw-in groove 7, there is rotating cap 12 at the top of connecting rod 11 through welded fastening, hexagonal groove has been seted up at the top of rotating cap 12, utilize rotating cap 12 to be favorable to driving connecting rod 11 along the inside rotation of last draw-in groove 7, there is extrusion platform 10 bottom of connecting rod 11 through welded fastening, can outwards release the inside of positioning cone 9 from last draw-in groove 7 and through-hole 8 through extrusion platform 10, extrusion platform 10 and last draw-in groove 7 sliding connection, through-hole 8 has been seted up on the inner wall of last draw-in groove 7, through-hole 8 runs through in last screw rod 4 from the inside of last draw-in groove 7, through-hole 8 and last draw-in groove 7 intercommunication, the quantity of through-hole 8 is two, two through-hole 8 are left and right sides symmetrical settings, the internal connection of through-hole 8 has positioning cone 9, positioning cone 9 and through-hole 8 sliding connection, the front end of positioning cone 9 is the toper structure, the terminal and extrusion platform 10 can carry out the stability of bolt through bolt, the bolt is guaranteed.

When connecting self tapping cement bolt with the double-end and twisting cement inside, utilize hexagon socket head wrench to follow the inside rotation connecting rod 11 of last draw-in groove 7, drive extrusion platform 10 along the inside rebound of last draw-in groove 7, at the in-process of extrusion platform 10 rebound, can drive location awl 9 and move to the outside along the inside of through-hole 8 for location awl 9 extends away from in through-hole 8, and inside the embedding cement, thereby play the fixed action to the bolt, guarantee the stability of bolt.

Chip grooves 13 are formed in the surfaces of the lower screw rod 1 and the upper screw rod 4, the inner wall of each chip groove 13 is a smooth arc surface, the number of the chip grooves 13 is four, the four chip grooves 13 are arranged at equal intervals along the surfaces of the lower screw rod 1 and the upper screw rod 4, the chip grooves 13 are beneficial to timely discharging cement chips when the bolt attacks the inside of cement, gaskets 15 are sleeved on the surfaces of the lower screw rod 1 and the upper screw rod 4, one side of each gasket 15 is connected with a nut 14, each nut 14 is connected with the lower screw rod 1 and the upper screw rod 4 through threads, the nut 14 and the gaskets 15 are matched, two ends of the bolt can be fixed respectively, and the stability of the bolt is further improved.

After connecting the double-end self tapping cement bolt with the double-end and twisting in cement, cup joint the equipment that needs to fix on the surface of bolt again, later cup joint gasket 15, nut 14 in proper order on the surface of bolt, utilize the spanner to screw up nut 14 to locking the equipment that needs to fix, guarantee the stability of equipment.

The foregoing shows and describes the basic principles and principal features of the invention, together with the advantages thereof. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only illustrative of the principles of the present invention, and that various changes and modifications may be made without departing from the spirit and scope of the present invention, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a self tapping cement bolt is connected to double-end, includes lower screw rod (1), its characterized in that: draw-in groove (3) down have been seted up to the inside of lower screw rod (1), the upper end of lower screw rod (1) is provided with screw rod (4), the lower extreme of going up screw rod (4) is connected with extension rod (5), the integrated forging shaping between extension rod (5) and last screw rod (4), extension rod (5) extend to the inside of draw-in groove (3) down, through threaded connection between extension rod (5) and lower screw rod (1), the lower extreme of extension rod (5) is through welded fastening stopper (6), stopper (6) activity inlay card is in the inside of draw-in groove (3) down, the surface of stopper (6) and the inner wall laminating of draw-in groove (3) down, screw rod (1) and the surface of last screw rod (4) have all seted up chip groove (13) down, the inner wall of chip groove (13) is glossy cambered surface, the quantity of chip groove (13) is four groups, and four groups of chip groove (13) are arranged along the equidistant in the surface of lower screw rod (1) and last screw rod (4).

2. A double-ended connecting self-tapping cement bolt as defined in claim 1, wherein: go up draw-in groove (7) have been seted up to the inside of screw rod (4), the inside of going up draw-in groove (7) is provided with connecting rod (11), connecting rod (11) run through in last screw rod (4) from the inside of last draw-in groove (7), pass through threaded connection between connecting rod (11) and last screw rod (4), the top of connecting rod (11) has through welded fastening and rotates cap (12), the hexagonal groove has been seted up at the top of rotating cap (12).

3. A double-ended connection self-tapping cement bolt as defined in claim 2, wherein: the bottom of the connecting rod (11) is fixedly provided with an extrusion table (10) through welding, and the extrusion table (10) is connected with the upper clamping groove (7) in a sliding mode.

4. The double-ended connection self-tapping cement bolt as claimed in claim 3, wherein: the inner wall of the upper clamping groove (7) is provided with through holes (8), the through holes (8) penetrate through the upper screw rod (4) from the inside of the upper clamping groove (7), the through holes (8) are communicated with the upper clamping groove (7), the number of the through holes (8) is two, and the two through holes (8) are arranged in a bilateral symmetry manner.

5. The double-ended connection self-tapping cement bolt of claim 4, characterized in that: the internally connected of through-hole (8) has location awl (9), location awl (9) and through-hole (8) sliding connection, the front end of location awl (9) is the toper structure, the terminal laminating with the surface of extrusion platform (10) of location awl (9).

6. A double-ended connecting self-tapping cement bolt as defined in claim 1, wherein: the surface of the lower screw rod (1) and the surface of the upper screw rod (4) are both sleeved with gaskets (15), one side of each gasket (15) is connected with a nut (14), and the nuts (14) are both in threaded connection with the lower screw rod (1) and the upper screw rod (4).

7. A double-ended connecting self-tapping cement bolt as defined in claim 1, wherein: the lower end of the lower screw rod (1) is provided with a conical drill bit (2), and the conical drill bit (2) and the lower screw rod (1) are integrally forged and formed.