CN201386717Y

CN201386717Y - Easily removable expansion bolt

Info

Publication number: CN201386717Y
Application number: CN200920006085U
Authority: CN
Inventors: 郭振春
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-03-03
Filing date: 2009-03-03
Publication date: 2010-01-20
Anticipated expiration: 2019-03-03

Abstract

The utility model relates to an easily removable expansion bolt which can be repeatedly used. The prior expansion bolt can not be regulated and changed and is difficult to disassemble and repeatedly use after being installed. For solving the technical problems, the easily removable expansion bolt comprises a barb type expansion conical nut, a left threaded rod, a right threaded rod, a nut, an expansion sleeve pipe and a gasket, wherein the built-in screw threads of the nut and the barb type expansion conical nut are matched with screw threads of the threaded rods. When the easily removable expansion bolt needs to be regulated, changed or disassembled, the threaded rods can be regulated, changed or disassembled by only loosening the nut, 98 percent of the bolt can be disassembled, and thereby the bolt can be regulated, changed and disassembled. The use method, the functions, the performance, the characteristics, and the like of the easily removable expansion bolt are completely consistent with that of the prior expansion bolt, and the easily removable expansion bolt performs an important function for protecting environment and saving earth resources.

Description

Easily detachable expansion bolt

Technical field

The utility model relates to a kind of novel easily detachable expansion bolt.

Background technique

Present employed EXPANSION ANCHOR BOLTS comprises swell fixture and nut that matches with it and expansion sleeve, wherein swell fixture bolt end is the truncated cone shape ailhead or is set to the truncated cone shape nut, described expansion sleeve has a plurality of vertical notches near an end of truncated cone shape ailhead or truncated cone shape nut, an end of expansion sleeve is divided into a plurality of expansion muscle in other words, and the other end is a cast.During use, tighten swell fixture or nut, truncated cone shape ailhead or truncated cone shape nut are pressed in the said expansion sleeve from small end to big end, force the tapered dilatancy of its expansion muscle, and expand in mounting hole.

With regard to the expansion of metal sleeve pipe, this expansion bending distortion can not disappear because of the disappearance of external force, because expansion sleeve expands in mounting hole, and does not expose outside the mounting hole, wants to take out EXPANSION ANCHOR BOLTS, can only spur by force and have truncated cone shape ailhead or truncated cone shape nut, expansion sleeve can further expand and being stuck in the mounting hole tightly like this, in this case, if continue to increase pulling force, will damage metope and various carrier, the EXPANSION ANCHOR BOLTS of Qu Chuing is difficult to reuse by force.

Producing, we often run into and are installed in body of wall or ground in the life, the EXPANSION ANCHOR BOLTS on road surface need remove and be difficult to remove, these are stranded in body of wall or ground, the EXPANSION ANCHOR BOLTS on road surface is given our production, life has caused great inconvenience, and have a strong impact on attractive in appearance, people are attempting addressing the above problem always, the swell fixture that a kind of tapping screw and plastic expansion sleeve pipe combine has appearred on the market now, characteristics are that the top of plastic expansion sleeve pipe is the tubulose of internal diameter greater than the tapping screw external diameter, the bottom is provided with two adjacent expansion muscle arranged side by side, during use, an end that the plastic expansion sleeve pipe is had the expansion muscle inserts in the mounting hole, when being screwed into tapping screw, tapping screw is made screw thread at the interior sidespin of expansion muscle on the one hand, force two expansion muscle to the both sides bending on the other hand, thereby make the plastic expansion tube ends expand also swelling in mounting hole, when needing dismounting, tapping screw can be back-outed, this swell fixture is subjected to the influence of plastic material, its intensity is limited, in mounting hole, come off easily, can not carry too big load, and the plastic expansion sleeve pipe is difficult for also taking out.

Summary of the invention

The technical problems to be solved in the utility model is that people thirst for solving always and how to overcome existing EXPANSION ANCHOR BOLTS and be difficult to adjust, be difficult to the defective of changing and being difficult to dismantle for a long time, providing a kind of promptly can adjust and change easily, easily detachable expansion bolt fixing, that dismantle and can use repeatedly easily that again can be firm, EXPANSION ANCHOR BOLTS dismounting rate can reach more than 98%.

For solving the problems of the technologies described above, easily detachable expansion bolt of the present invention comprises screw rod, tapered nut, expansion sleeve, plain cushion, spring pad and nut expand.(positive and negative) screw thread about wherein the two ends on the screw rod are provided with, one end is that right-hand thread (plus thread), the other end are left hand thread (left-hand thread), (positive and negative) screw thread is complementary about nut and expansion built-in screw thread of tapered nut and screw rod, and is provided with barb on the surface of the tapered nut that expands.The small end of the tapered nut of described expansion is plugged in described expansion sleeve one end, expand the big end external diameter of tapered nut greater than the interior warp of described expansion sleeve, it is characterized in that: an end of the screw rod of described EXPANSION ANCHOR BOLTS is a right-hand thread, the other end is a left hand thread, so, the screw thread of described nut that matches with the left and right screw thread in EXPANSION ANCHOR BOLTS screw rod two ends and expansion cone nut also is left and right screw thread, can be left hand thread according to that end of required making, and which end is a right-hand thread.

So design screws nut during use, and the tapered nut that expands is pressed in the described expansion sleeve from small end to big end, forces described expansion sleeve to do radioactive displacement and swelling on the hole wall of mounting hole, thereby realizes the purpose of fixing whole EXPANSION ANCHOR BOLTS; When needing to adjust, change or dismantling, because of the tapered nut that expands is embedded in expansion sleeve and the mounting hole, as long as unclamp nut, carry out the adjustment of screw rod or dismantle, just can realize adjusting screw rod height or short, smooth and unified, if determine useless can the dismounting easily, thereby reach the purpose of bolt adjustment or dismounting.After taking out screw rod in addition, expand tapered nut and expansion sleeve also swelling be trapped in the hole, at this moment can utilize tapered nut of the expansion that is trapped in the hole and expansion sleeve that other special-shaped EXPANSION ANCHOR BOLTS is installed, realize reusable purpose to reach with other parts of EXPANSION ANCHOR BOLTS.

In the above technological scheme, the inventor breaks existing thinking set, analyses in depth the structure and the drawback of existing employing EXPANSION ANCHOR BOLTS, and the expansive screw of (positive and negative) screw thread about having designed is convenient to adjust, is changed and dismounting.Traditional expansion bolt is in installation process, and its whole EXPANSION ANCHOR BOLTS is stuck in the mounting hole and can not takes out, and the two compares the present invention outstanding substantive distinguishing features and obvious improvement.After adopting technique scheme; easily detachable expansion bolt of the present invention has simple in structure; the repeatedly used advantage of cheap convenient disassembly; the dismounting rate of bolt can reach 98%; and consistent with the traditional expansion bolt operating method, All aspects of such as performance, function and characteristics are all in full accord, are widely used in industry and fields such as ground, metope, road surface and industry, agricultural and society be public; to ecological environmental protection, save earth resource and play significant role.

Description of drawings

Below in conjunction with drawings and Examples the utility model is further specified.

Fig. 1 is the plan of the utility model easily detachable expansion bolt.

Fig. 2 is the sectional view of the utility model easily detachable expansion bolt.

Among the figure, tapered nut 8 grooves of 1 screw rod 2 expansion sleeves, 3 nuts 4 pads, 5 compression springs 6 barbs, 7 expansions 9 screw thread separatrix

Embodiment

Embodiment 1:

In Fig. 1, be combined with expansion sleeve (2) on the screw rod (1), (positive and negative) screw thread about the two ends of screw rod (1) are provided with, screw rod (a 1) wherein end is provided with and is provided with groove (8) with the nut (3) of its threads engaged and pad (4), compression spring (5) and in the termination, screw rod (1) the wherein the other end is provided with and the tapered nut of the expansion of its threads engaged (7), and the tapered nut (7) that expands is provided with barb (6).

In Fig. 2, be combined with expansion sleeve (2) on the screw rod (1), (positive and negative) screw thread about the two ends of screw rod (1) are provided with, about the arbitrary position of screw thread separatrix (9) on screw rod (1) of (positive and negative) screw thread, screw rod (a 1) wherein end is provided with and is provided with groove (8) with nut (3), pad (4) and the compression spring (5) of its threads engaged and in the termination, screw rod (1) the wherein the other end is provided with and the tapered nut of the expansion of its threads engaged (7), and the tapered nut (7) that expands is provided with barb (6).During installation, a suitable hole is made a call in the institute mounting point, EXPANSION ANCHOR BOLTS is put into the hole, nut (3) is tightened got final product.Need to adjust, when transposing and dismounting, unclamp nut (3) and utilize instrument such as screw-driver that screw rod (1) is adjusted, changed and dismantles to get final product by groove (8).

Claims

1, a kind of easily detachable expansion bolt that can use repeatedly, easily detachable expansion bolt of the present invention comprises screw rod and the tapered nut of expansion with matching and expansion sleeve, nut, pad, wherein the screw rod two ends of EXPANSION ANCHOR BOLTS are respectively arranged with left and right sides screw thread, one end is that left hand thread, the other end are right-hand thread, the small end of the tapered nut of described expansion is plugged in described expansion sleeve one end, expand the big end external diameter of tapered nut greater than the interior warp of described expansion sleeve, it is characterized in that: the screw thread at the screw rod two ends of described EXPANSION ANCHOR BOLTS is a left and right sides screw thread, promptly positive left-hand thread.

2, easily detachable expansion bolt according to claim 1 is characterized in that: at least one end of the screw rod of described EXPANSION ANCHOR BOLTS is that right-hand thread is a plus thread, and the other end is that left hand thread is a left-hand thread.

3, easily detachable expansion bolt according to claim 1 is characterized in that: the surface of the tapered nut of expansion of described EXPANSION ANCHOR BOLTS is provided with barb.

4, easily detachable expansion bolt according to claim 1, it is characterized in that: the left and right sides threads engaged at the nut of described EXPANSION ANCHOR BOLTS and expand built-in screw thread of tapered nut and screw rod two ends, at least one is a plus thread for right-hand thread, and another is a left-hand thread for left hand thread.

5, according to claim 1 or 2 or 3 described easily detachable expansion bolts, it is characterized in that: the small end of the tapered nut of expansion of described EXPANSION ANCHOR BOLTS is plugged in described expansion sleeve one end, and the big end external diameter of the tapered nut that expands is greater than the interior warp of described expansion sleeve.

6, according to claim 1 or 2 or 3 described easily detachable expansion bolts, it is characterized in that: an end of described EXPANSION ANCHOR BOLTS screw rod can be set to pothook type or other geometrical shape according to different purposes.