CN214490414U

CN214490414U - Expansion screw pulling device

Info

Publication number: CN214490414U
Application number: CN202120432509.9U
Authority: CN
Inventors: 郭小兰; 封坤; 魏弦; 李昕
Original assignee: Panzhihua University
Current assignee: Panzhihua University
Priority date: 2021-02-26
Filing date: 2021-02-26
Publication date: 2021-10-26
Anticipated expiration: 2031-02-26

Abstract

The utility model discloses an inflation screw pulling device when pulling out the inflation screw of slope installation, avoids causing great destruction to the wall. The device comprises a mounting screw, a mounting plate and supporting legs; the mounting screw penetrates through the mounting plate and is in threaded connection with the mounting plate; one axial end of the mounting screw is provided with a rotation stopping hole, and the other end of the mounting screw is provided with a connecting part for connecting an expansion bolt; the supporting legs are connected with the mounting plate; the three support legs are arranged on the same side of the mounting plate in a triangular shape; the one end that the landing leg is kept away from the mounting panel is installed and is used for adjusting the length adjustment spare of landing leg length. Has the advantages of simple structure, convenient use, low manufacturing cost and the like. The connecting block can be replaced to match with expansion screws of different models, and the application range of the device is expanded.

Description

Expansion screw pulling device

Technical Field

The utility model belongs to the technical field of the five metals building materials, concretely relates to expansion screw pulling device.

Background

The expansion screw is widely applied, and all the expansion screws are used for wall fixing. However, in use, problems are encountered. Before the expansion screw is screwed on the wall, people need to use an electric drill to punch holes on the wall. In the process of drilling, if steel bars or other foreign matters with high hardness in the wall are met, a drill bit of the electric drill can deviate, and therefore the drill hole deviates. When the expansion screw is drilled in the drilled hole, the screw end of the expansion screw is easy to deviate, the contact surface between the nut and the part is reduced, the stress is increased, and meanwhile, the surface of the part is easy to wear and damage. These unsatisfactory expansion screws are removed. After the expansion screw is driven into the drilled hole, the expansion screw is clamped with the wall surface and is not easy to take out. In general, a worker strikes a screw exposed out of a wall surface with a hammer to cause the screw to shake left and right, and finally the screw is clamped out with a large force. However, the above method has the disadvantages of causing great damage to the wall surface and affecting the beauty.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that an inflation screw pulling device is provided, when pulling out the inflation screw of slope installation, avoid causing great destruction to the wall.

The utility model provides a technical scheme that its technical problem adopted is: an expansion screw pulling device comprises a mounting screw rod, a mounting plate and a supporting leg;

the mounting screw penetrates through the mounting plate and is in threaded connection with the mounting plate;

one axial end of the mounting screw is provided with a rotation stopping hole, and the other axial end of the mounting screw is provided with a connecting part for connecting an expansion bolt;

the supporting legs are connected with the mounting plate;

the number of the supporting legs is three, and the three supporting legs are arranged on the same side of the mounting plate in a triangular mode;

and one end of the supporting leg, which is far away from the mounting plate, is provided with a length adjusting piece for adjusting the length of the supporting leg.

Further, the length adjustment piece comprises an adjustment block;

the regulating block is provided with the screw thread regulation hole, the one end that the mounting panel was kept away from to the landing leg is provided with the screw thread section, the screw thread section inserts in the screw thread regulation hole, and screw-thread fit.

Furthermore, the connecting part comprises a connecting block, one end of the connecting block is provided with a rotating part, and the other end of the connecting block is provided with a threaded connecting hole;

an installation space is arranged at the end part of the installation screw rod, which is far away from the rotation stopping hole, and the opening direction of the installation space is opposite to that of the rotation stopping hole;

the rotating part is arranged in the mounting space and is in rotating fit with the mounting screw;

a limiting convex edge is arranged on the inner side of the opening of the mounting space, and the rotating part is limited by the limiting convex edge;

the thread direction of the thread connecting hole is opposite to that of the peripheral surface of the mounting screw rod, and the axis of the thread connecting hole is collinear with that of the mounting screw rod.

Further, the rotating part is of a spherical structure.

Furthermore, the rotation stopping holes are square blind holes.

Further, the mounting plate is a circular plate.

Furthermore, a notch matched with the rotating part is formed in the mounting screw rod, and the notch is communicated with the mounting space.

Furthermore, the three support legs are centrosymmetric by taking the axis of the mounting screw as the center.

Further, the adjusting block is a rubber product.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model provides an inflation screw pulling device when pulling out the inflation screw of slope installation, avoids causing great destruction to the wall. Has the advantages of simple structure, convenient use, low manufacturing cost and the like. The connecting block can be replaced to match with expansion screws of different models, and the application range of the device is expanded.

Drawings

Fig. 1 is a perspective view of the present invention in one direction;

fig. 2 is a perspective view of the present invention in another direction;

fig. 3 is a bottom view of the present invention;

fig. 4 is a top view of the present invention;

fig. 5 is a perspective view of the connecting block of the present invention;

FIG. 6 is a schematic structural view of one embodiment of the invention in which the leg is engaged with the adjusting block;

fig. 7 is a schematic view of the installation structure of the rotating part and the installation space of the present invention;

reference numerals: 1, installing a screw; 101-rotation stopping holes; 102-a notch; 103-installation space; 104-limit convex edge; 2-mounting a plate; 3-a support leg; 301-a threaded segment; 4-a regulating block; 401-threaded adjustment holes; 5, connecting blocks; 501-a rotating part; 502-threaded connection hole.

Detailed Description

The present invention will be further explained with reference to the drawings and examples.

As shown in the attached drawings, the expansion screw pulling device comprises a mounting screw rod 1, a mounting plate 2 and a supporting leg 3; the mounting screw 1 penetrates through the mounting plate 2 and is in threaded connection with the mounting plate 2; one axial end of the mounting screw 1 is provided with a rotation stopping hole 101, and the other end of the mounting screw is provided with a connecting part for connecting an expansion bolt; the supporting legs 3 are connected with the mounting plate 2; the number of the supporting legs 3 is three, and the three supporting legs 3 are arranged on the same side of the mounting plate 2 in a triangular shape; and one end of the supporting leg 3, which is far away from the mounting plate 2, is provided with a length adjusting piece for adjusting the length of the supporting leg 3.

The mounting plate 2 and the supporting legs 3 form a mounting base. By rotating the mounting screw 1, the mounting base can do linear reciprocating motion along the axial direction of the mounting screw 1. After the constructor adjusts the installation screw rod 1 to a proper position, the connecting part of the installation screw rod 1 is connected with the screw rod of the expansion screw. When the inflation screw is the tilt state, through adjusting one of them or two arbitrary length adjustment spare to when guaranteeing that the tip that three landing leg 3 kept away from mounting panel 2 supports tightly with the wall, the axis of mounting screw 1 and the axis collineation of the screw rod of inflation screw. Insert the tool bit of electric wrench in the hole 101 that splines of installation screw 1 one end, keep away from the tip and the wall of mounting panel 2 with three landing leg 3 and support tightly, start electric wrench, slowly extract the inflation screw.

The length adjustment piece has a plurality of specific embodiments:

in a first embodiment, the length adjustment member comprises a sleeve and a fastening bolt; through holes are formed in one end, far away from the mounting plate 2, of the supporting leg 3, and the through holes are evenly arranged at intervals along the length direction of the supporting leg 3; the side wall of the sleeve is provided with a locking hole; the sleeve is sleeved at one end of the supporting leg 3 far away from the mounting plate 2 and can freely slide relative to the supporting leg 3; the fastening bolt sequentially penetrates through the locking hole and one of the through holes and is in threaded fit with the locking hole to realize fastening.

However, the first embodiment has the disadvantage of poor adjustment accuracy, and in order to solve the above technical problem, it is preferable that the second embodiment includes an adjusting block 4; the regulating block 4 is provided with a thread regulating hole 401, one end of the supporting leg 3, which is far away from the mounting plate 2, is provided with a thread section 301, the thread section 301 is inserted into the thread regulating hole 401, and is in thread fit. The adjustable length is realized by rotating the adjusting block 4, the adjusting precision is higher, and the fastening is realized by self-locking of threads. As shown in fig. 6, the threaded adjustment hole 401 may be a through hole. In order to avoid the problem that the supporting legs 3 extend out of the through holes to scratch the wall surface during adjustment, preferably, the threaded adjusting holes 401 are blind holes.

The connecting portion that is used for connecting expansion bolts that the other end of installation screw 1 set up has multiple concrete implementation mode, only needs to guarantee that installation screw 1 and expansion bolts are stably connected. If the connecting part is a clamp, the screw rod of the expansion bolt is clamped through the clamp; if the connecting part is a mechanical hand grip, the screw rod of the expansion bolt is tightly gripped by the mechanical hand grip. The clamp and the mechanical gripper are both structures in the prior art.

Preferably, the connecting part comprises a connecting block 5, one end of the connecting block 5 is provided with a rotating part 501, and the other end of the connecting block 5 is provided with a threaded connecting hole 502; an installation space 103 is arranged at the end part of the installation screw rod 1 far away from the rotation stopping hole 101, and the opening direction of the installation space 103 is opposite to the opening direction of the rotation stopping hole 101; the rotating part 501 is installed in the installation space 103, and the rotating part 501 is in rotating fit with the installation screw 1; a limiting convex edge 104 is arranged on the inner side of the opening of the mounting space 103, and the rotating part 501 is limited by the limiting convex edge 104; the thread direction of the thread connecting hole 502 is opposite to the thread direction of the outer peripheral surface of the mounting screw 1, and the axis of the thread connecting hole 502 is collinear with the axis of the mounting screw 1. The limiting convex edge 104 can prevent the rotating part 501 from moving along the axial direction of the mounting screw 1, i.e. can prevent the rotating part 501 from being separated from the mounting space 103, and ensure the connection stability of the connecting block 5 and the mounting screw 1. The screw rod of the expansion screw is connected with the threaded connecting hole 502, the connecting block 5 can rotate relative to the mounting screw rod 1, the torsional shear stress borne by the mounting screw rod 1 in the pulling process is reduced to a great extent, and the use strength of the mounting screw rod 1 is improved. The thread direction of the outer peripheral surface of the mounting screw 1 is opposite to the thread direction of the thread connection hole 502, for example, the outer peripheral surface of the mounting screw 1 is a left-hand thread, and the screw thread of the expansion screw is a right-hand thread. Electric spanner drives installation screw rod 1 and moves to the direction of keeping away from the wall, and the screw rod of right pivoted can drive connecting block 5 and rotate right owing to the effect of frictional force to make connecting block 5 more firm with being connected of inflation screw, played locking effect. The connecting block 5 can be replaced according to the type of the expansion screw, so that the threaded connecting hole 502 of the connecting block 5 is matched with the screw rods of the expansion screws with different diameters, and the application range of the device is widened.

The rotating portion 501 may be a cylindrical structure, and preferably, the rotating portion 501 is a spherical structure.

The rotation stopping holes 101 have various specific structural forms, such as non-circular blind hole structures including diamond blind holes and oval blind holes. Preferably, the rotation stopping hole 101 is a square blind hole.

The mounting plate 2 has various specific structural forms, such as a square plate, a triangular plate, and the like. Preferably, the mounting plate 2 is a circular plate.

For the convenience of installing the connecting block 5, preferably, the installing screw 1 is provided with a notch 102 matched with the rotating part 501, and the notch 102 is communicated with the installing space 103. The rotating portion 501 passes through the notch 102 and is engaged in the installation space 103. The rotating portion 501 is adapted to the notch 102, specifically, the rotating portion 501 can pass through the notch 102, so that the rotating portion 501 is stably installed in the installation space 103, and meanwhile, the rotating portion 501 is prevented from coming out of the notch 102.

In the embodiment shown in fig. 1-4, three of the legs 3 are centered on the axis of the mounting screw 1 and are centrosymmetric. The three legs 3 are far away from the plane of the end part of the mounting plate 2 and are vertical to the axis of the mounting screw 1.

The adjusting block 4 may be made of metal, but the wall surface is easily scratched, and preferably, the adjusting block 4 is made of rubber. The rubber product is a flexible part, and the wall surface is not easy to scratch.

The utility model discloses an above do the utility model discloses a concrete implementation can be seen from the implementation, the utility model provides an expansion screw pulling device, when pulling out the expansion screw of slope installation, avoid causing great destruction to the wall. Has the advantages of simple structure, convenient use, low manufacturing cost and the like. The connecting block can be replaced to match with expansion screws of different models, and the application range of the device is expanded.

Claims

1. The utility model provides an expansion screw pulling device which characterized in that: comprises a mounting screw rod (1), a mounting plate (2) and a supporting leg (3);

the mounting screw (1) penetrates through the mounting plate (2) and is in threaded connection with the mounting plate (2);

one axial end of the mounting screw rod (1) is provided with a rotation stopping hole (101), and the other end of the mounting screw rod is provided with a connecting part for connecting an expansion bolt;

the supporting legs (3) are connected with the mounting plate (2);

the number of the supporting legs (3) is three, and the three supporting legs (3) are arranged on the same side of the mounting plate (2) in a triangular shape;

the length adjusting piece for adjusting the length of the supporting leg (3) is installed at one end, far away from the installation plate (2), of the supporting leg (3).

2. An expansion screw extraction device as claimed in claim 1, wherein: the length adjustment piece comprises an adjustment block (4);

adjusting block (4) are provided with screw thread regulation hole (401), the one end that mounting panel (2) were kept away from in landing leg (3) is provided with screw thread section (301), screw thread section (301) insert in screw thread regulation hole (401), and screw-thread fit.

3. An expansion screw extraction device as claimed in claim 1, wherein: the connecting part comprises a connecting block (5), one end of the connecting block (5) is provided with a rotating part (501), and the other end of the connecting block is provided with a threaded connecting hole (502);

an installation space (103) is arranged at the end part of the installation screw (1) far away from the rotation stopping hole (101), and the opening direction of the installation space (103) is opposite to the opening direction of the rotation stopping hole (101);

the rotating part (501) is arranged in the installation space (103), and the rotating part (501) is in rotating fit with the installation screw rod (1);

a limiting convex edge (104) is arranged on the inner side of the opening of the mounting space (103), and the rotating part (501) is limited through the limiting convex edge (104);

the thread direction of the thread connecting hole (502) is opposite to that of the outer peripheral surface of the mounting screw (1), and the axis of the thread connecting hole (502) is collinear with that of the mounting screw (1).

4. An expansion screw extraction device as claimed in claim 3, wherein: the rotating part (501) is of a spherical structure.

5. An expansion screw extraction device as claimed in claim 1, wherein: the rotation stopping holes (101) are square blind holes.

6. An expansion screw extraction device as claimed in claim 1, wherein: the mounting plate (2) is a circular plate.

7. An expansion screw extraction device as claimed in claim 3, wherein: the mounting screw (1) is provided with a notch (102) matched with the rotating part (501), and the notch (102) is communicated with the mounting space (103).

8. An expansion screw extraction device as claimed in claim 1, wherein: the three supporting legs (3) are centrosymmetric by taking the axis of the mounting screw rod (1) as the center.

9. An expansion screw extraction device as claimed in claim 2, wherein: the adjusting block (4) is a rubber product.