CN210531360U

CN210531360U - Taper sleeve type bidirectional expansion bolt

Info

Publication number: CN210531360U
Application number: CN201921025842.7U
Authority: CN
Inventors: 殷志碗
Original assignee: Yangzhou Polytechnic Institute
Current assignee: Yangzhou Polytechnic Institute
Priority date: 2019-07-03
Filing date: 2019-07-03
Publication date: 2020-05-15
Anticipated expiration: 2029-07-03

Abstract

The utility model discloses a two-way expansion bolts of taper sleeve formula, the installation structure comprises a sleeve, the inner open slot has been seted up to the sheathed tube lower extreme, the inside swing joint of sheathed tube has the countersunk head bolt, the upper end from the bottom up of countersunk head bolt swing joint has flat pad, spring pad and hexagon nut in proper order. According to the taper sleeve type bidirectional expansion bolt, the upper end and the lower end of the sleeve are respectively provided with the open slot, the upper end of the sleeve is provided with the taper sleeve, and when the device is subjected to inward axial force on the device from the outside, the taper sleeve can tightly tension the inner end of the sleeve, so that the device is prevented from axially moving; on the basis of keeping the axial stress of the inner end of the original traditional structure, the bidirectional locking is realized, and after the expansion screw is installed, the stability of the expansion screw in the process of fixing an object and a connector can be effectively ensured.

Description

Taper sleeve type bidirectional expansion bolt

Technical Field

The utility model relates to an expansion bolts equipment technical field specifically is two-way expansion bolts of taper sleeve formula.

Background

The expansion bolt is a special threaded connecting piece for fixing pipeline branch, hanger, bracket or equipment on a wall, a floor slab and a column; the fixing principle of the expansion screw is as follows: the expansion screw is fixed by utilizing the wedge slope to promote the expansion to generate friction binding force, thereby achieving the fixing effect; one end of the screw is provided with threads, and the other end of the screw is provided with a taper; the steel sheet is covered on the outer surface, a plurality of notches are arranged on one half of the iron sheet cylinder, the steel sheet cylinder and the notches are plugged into a hole drilled on a wall together, then a nut is locked, the nut pulls a screw outwards to pull the taper into the steel sheet cylinder, the steel sheet cylinder is expanded, and then the steel sheet cylinder is tightly fixed on the wall, and the steel sheet cylinder is generally used for fastening protective guards, rain awnings, air conditioners and the like on materials such as cement, bricks and the like.

When the device is used, holes with corresponding sizes are drilled on the fixed body by using an impact electric drill (hammer), then the bolt and the expansion pipe are arranged in the holes, and the bolt, the expansion pipe, the mounting piece and the fixed body can be expanded into a whole by screwing the nut; the bolt can expand after being screwed, the tail part of the bolt is provided with a big head, a round pipe with a diameter slightly larger than that of the bolt is sleeved outside the bolt, and the tail part is provided with a plurality of openings; after the expansion bolt is arranged and punched into a hole on the ground or the wall surface, the nut on the expansion bolt is screwed by a spanner, the bolt moves outwards, but the metal sleeve outside is still, so that the metal sleeve is expanded by the big head at the bottom of the bolt to fully expand the whole hole, and the expansion bolt cannot be drawn out; because the depth of the mounting hole is greater than that of the expansion bolt, particularly after the expansion sleeve is tightened by screwing, part of the movable space is arranged at the bottom of the mounting hole; after the installation is finished, the expansion bolt is difficult to draw out, but when external force is pressed into the hole, the bolt drives the sleeve to move towards the hole, particularly, the load has large vibration, and the loosening is possible, namely, when the connecting piece swings, vibrates and the like under the action of the external force, the expansion bolt can be prevented from moving upwards in a single direction; but after the external force is reduced, even when pressure (such as wheel rolling) occurs, the expansion bolt sinks into the hole; loosening occurs after repeated times.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a two-way expansion bolts of taper sleeve formula to provide when external force is impressed to downthehole in solving above-mentioned background art, cause the bolt to drive the sleeve pipe to the downthehole motion, especially load has great vibrations, the problem that probably takes place the pine to take off.

In order to achieve the above object, the utility model provides a following technical scheme: taper sleeve type bidirectional expansion bolt, including the sleeve pipe, the inner open slot has been seted up to sheathed tube lower extreme, sheathed tube inside swing joint has countersunk head bolt, countersunk head bolt's upper end from the bottom up swing joint has flat pad, spring pad and hexagon nut in proper order.

Preferably, the upper end of the sleeve is provided with an outer end open slot, and the outer end open slot and the inner end open slot have the same size.

Preferably, the lower end of the countersunk head bolt is of a conical surface structure, and the upper end of the countersunk head bolt is fixedly connected with threads.

Preferably, sheathed tube upper end swing joint has the taper sleeve, the taper sleeve sets up the lower extreme at flat pad, and the taper sleeve is hollow back taper surface structure, the internal diameter of taper sleeve slightly is less than sheathed tube diameter, the diameter of terminal surface is less than sheathed tube internal diameter under the taper sleeve, the diameter of taper sleeve upper end surface is greater than sheathed tube internal diameter.

Preferably, the diameter of the lower end of the countersunk head bolt is larger than the inner diameter of the sleeve, and the diameter of the upper end of the countersunk head bolt is equal to the inner diameter of the sleeve.

Preferably, the diameter of the lower end of the countersunk head bolt is the same as that of the upper end of the taper sleeve, and the diameter of the lower end of the countersunk head bolt and the diameter of the upper end of the taper sleeve are both smaller than that of the sleeve.

Compared with the prior art, the beneficial effects of the utility model are that: according to the taper sleeve type bidirectional expansion bolt, the upper end and the lower end of the sleeve are respectively provided with the open slot, the upper end of the sleeve is provided with the taper sleeve, and when the device is subjected to inward axial force on the device from the outside, the taper sleeve can tightly tension the inner end of the sleeve, so that the device is prevented from axially moving; on the basis of keeping the axial stress of the inner end of the original traditional structure, the bidirectional locking is realized, and after the expansion screw is installed, the stability of the expansion screw in the process of fixing an object and a connector can be effectively ensured.

Drawings

FIG. 1 is a schematic front view of the present invention;

FIG. 2 is a schematic sectional view of the present invention;

fig. 3 is a schematic view of the overall structure of the present invention.

In the figure: 1. a sleeve; 2. an outer end opening slot; 3. an inner end open slot; 4. a countersunk bolt; 5. a thread; 6. a taper sleeve; 7. flattening the cushion; 8. a spring pad; 9. a hexagonal nut.

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.

Referring to fig. 1-3, the present invention provides a technical solution: taper sleeve type bidirectional expansion bolt, including sleeve pipe 1, inner open slot 3 has been seted up to sleeve pipe 1's lower extreme, and sleeve pipe 1's inside swing joint has countersunk head bolt 4, and countersunk head bolt 4's upper end from the bottom up swing joint has flat pad 7, spring pad 8 and hexagon nut 9 in proper order.

Furthermore, an outer end open slot 2 is formed in the upper end of the sleeve 1, the outer end open slot 2 and the inner end open slot 3 are the same in size, two groups of open slots are formed, the lower end of the countersunk head bolt 4 can be used for tensioning the inner end open slot 3 in the lower end of the sleeve 1, and the taper sleeve 6 can be used for tensioning the outer end open slot 2 in the upper end of the sleeve 1.

Furthermore, the lower end of the countersunk head bolt 4 is in an wedged inclination structure, and the upper end of the countersunk head bolt 4 is fixedly connected with the thread 5, so that the countersunk head bolt 4 can be in threaded connection through the thread 5 and the hexagon nut 9.

Further, sleeve pipe 1's upper end swing joint has taper sleeve 6, taper sleeve 6 sets up the lower extreme at flat pad 7, and taper sleeve 6 is hollow back taper surface structure, taper sleeve 6's internal diameter slightly is less than sleeve pipe 1's diameter, the diameter of terminal surface is less than sleeve pipe 1's internal diameter under taper sleeve 6, the diameter of taper sleeve 6 up end is greater than sleeve pipe 1's internal diameter, be favorable to receiving when coming from outside inward axial force when countersunk head bolt 4, can rise tightly with outer end open slot 2 of sleeve pipe 1 upper end through taper sleeve 6, the preventing means is not hard up.

Further, the diameter of the lower end of the countersunk head bolt 4 is larger than the inner diameter of the sleeve 1, the diameter of the upper end of the countersunk head bolt 4 is equal to the inner diameter of the sleeve 1, the countersunk head bolt 4 can be favorably and smoothly placed into the sleeve 1 without resistance, and the lower end of the countersunk head bolt 4 can be prevented from entering the sleeve 1 by the large diameter of the lower end of the countersunk head bolt 4.

Further, the diameter of the lower end of the countersunk head bolt 4 is the same as the diameter of the upper end of the taper sleeve 6, and the diameter of the lower end of the countersunk head bolt 4 and the diameter of the upper end of the taper sleeve 6 are both smaller than the diameter of the sleeve 1, so that when the taper sleeve 6 is sleeved on the upper end of the sleeve 1, the taper sleeve 6 cannot completely fall into the sleeve 1.

The working principle is as follows: firstly, starting from one end of a countersunk head bolt 4 close to a thread 5, penetrating the countersunk head bolt 4 into a sleeve 1 to enable the countersunk head bolt 4 to be in the sleeve 1, enabling the wedge-shaped inclination part at the lower part of the countersunk head bolt 4 to be outside the sleeve 1, then sleeving a taper sleeve 6 on the outer wall of the thread 5 from the upper end of the thread 5 to enable one end of the taper sleeve 6 with a small diameter to be close to the upper end of the sleeve 1, sequentially sleeving a flat pad 7, a spring pad 8 and a hexagon nut 9 on the upper end of the thread 5, screwing the hexagon nut 9 to enable the countersunk head bolt 4, the taper sleeve 6 and the sleeve 1 to be just stably installed, then punching a hole on a wall and an object to be connected by using a puncher, enabling the hole diameter of the punched hole to be matched with the diameter of the sleeve 1, connecting the object and the wall by using a device, finally screwing the hexagon nut 9 to enable the thread 5 to move upwards to drive the countersunk head bolt 4 to move upwards, enabling the countersunk head bolt 4 to break, so that the lower end of the sleeve 1 is expanded to fix the device in the wall, if the device is subjected to an inward force from the outside, the taper sleeve 6 moves downwards to break the upper end of the sleeve 1, so that the upper end of the sleeve 1 is expanded to fix the device in the wall, and the device is prevented from loosening and falling off.

It should be finally noted that the above only serves to illustrate the technical solution of the present invention, and not to limit the scope of the present invention, and that simple modifications or equivalent replacements performed by those skilled in the art to the technical solution of the present invention do not depart from the spirit and scope of the technical solution of the present invention.

Claims

1. Taper sleeve type bidirectional expansion bolt, which comprises a sleeve (1) and is characterized in that: the lower extreme of sleeve pipe (1) has been seted up inner open slot (3), the inside swing joint of sleeve pipe (1) has countersunk head bolt (4), the upper end from the bottom up of countersunk head bolt (4) swing joint has flat pad (7), spring pad (8) and hexagon nut (9) in proper order.

2. The taper sleeve type bidirectional expansion bolt according to claim 1, characterized in that: an outer end open slot (2) is formed in the upper end of the sleeve (1), and the outer end open slot (2) and the inner end open slot (3) are the same in size.

3. The taper sleeve type bidirectional expansion bolt according to claim 1, characterized in that: the lower end of the countersunk head bolt (4) is of a conical surface structure, and the upper end of the countersunk head bolt (4) is fixedly connected with a thread (5).

4. The taper sleeve type bidirectional expansion bolt according to claim 1, characterized in that: the upper end swing joint of sleeve pipe (1) has taper sleeve (6), taper sleeve (6) set up the lower extreme at flat pad (7), and taper sleeve (6) are hollow back taper surface structure, the internal diameter of taper sleeve (6) slightly is less than the diameter of sleeve pipe (1), the diameter of terminal surface is less than the internal diameter of sleeve pipe (1) under taper sleeve (6), the diameter of taper sleeve (6) up end is greater than the internal diameter of sleeve pipe (1).

5. The taper sleeve type bidirectional expansion bolt according to claim 1, characterized in that: the diameter of the lower end of the countersunk head bolt (4) is larger than the inner diameter of the sleeve (1), and the diameter of the upper end of the countersunk head bolt (4) is equal to the inner diameter of the sleeve (1).

6. The taper sleeve type bidirectional expansion bolt according to claim 1, characterized in that: the diameter of the lower end of the countersunk head bolt (4) is the same as that of the upper end of the taper sleeve (6), and the diameter of the lower end of the countersunk head bolt (4) and the diameter of the upper end of the taper sleeve (6) are both smaller than that of the sleeve (1).