Expansion bolt pulling device

Abstract

The expansion bolt pulling device comprises a tapping connecting piece which is provided with a containing cavity, the bottom of the tapping connecting piece is open, and threads are arranged on the outer side wall of the tapping connecting piece; the bottom of the tapping connecting piece rotates and moves from a top opening of an expansion pipe of the expansion bolt to an inner cavity of the expansion pipe of the expansion bolt. The inner wall of the expansion pipe is tapped by threads on the outer side wall of the tapping connecting piece; when the tapping connecting piece moves into the inner cavity of the expansion pipe of the expansion bolt, the top of the bolt column of the expansion bolt is located in the containing cavity of the tapping connecting piece. The supporting frame comprises a limiting plate and a containing space which is located below the limiting plate and corresponds to the expansion bolt; the tapping connecting piece penetrates through the containing space to the position above the limiting plate. The pulling assembly is connected with the tapping connecting piece, and the limiting plate can limit the pulling assembly to move towards the ground; the pulling assembly is configured to be used for applying acting force to the part, located above the limiting plate, of the tapping connecting piece so that an expansion pipe of the expansion bolt can be pulled out of the ground through the tapping connecting piece.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of expansion bolt pulling, and more particularly to an expansion bolt pulling device. BACKGROUND

[0002] The expansion bolt includes a bolt column and an expansion tube, the expansion tube is arranged outside the bolt column, both ends of the bolt column protrude out of the expansion tube, a first end is formed with a thread, and a second end is formed with a tapered body, the cross-sectional area of the tapered body gradually increases from the direction close to the first end of the bolt column to the direction away from the first end of the bolt column. The first end of the bolt column is also provided with a nut. During installation, a hole is first drilled in the ground, then the expansion bolt is placed in the hole with the first end facing outward, the nut is rotated to move the tapered body into the sleeve, thereby expanding the sleeve so that the sleeve can tightly clamp the inner wall of the hole to achieve fixation. The expansion bolt can bear a large load and has good fixing effect, and is widely used in the construction of factory buildings and the fixing of equipment.

[0003] During equipment migration and factory building expansion, there are generally two methods for processing the expansion tube bolt used for fixing the equipment. One method is to forcibly pound the part of the expansion tube bolt protruding out of the ground into the ground. The other method is to cut the part of the expansion tube bolt protruding out of the ground, and the remaining part is still buried in the ground, so that the expansion tube bolt cannot be completely removed. This method also brings great safety hazards to the later construction and causes waste of the expansion tube bolt.

[0004] Therefore, in order to overcome the defects in the prior art, it is necessary to provide an expansion bolt pulling device. CONTENT OF THE INVENTION

[0005] The purpose of the present application is to provide an expansion bolt pulling device to solve at least one of the above technical problems.

[0006] In order to achieve at least one of the above purposes, the present application adopts the following technical solutions:

[0007] The present application provides an expansion bolt pulling device, which comprises:

[0008] The tapping connector has a receiving cavity and an open bottom, and the outer side wall of the tapping connector is provided with threads; the tapping connector is configured to rotate and move from the open top of the expansion tube of the expansion bolt towards the inner cavity of the expansion tube of the expansion bolt, so as to tap the inner wall of the expansion tube; when the tapping connector moves into the inner cavity of the expansion tube of the expansion bolt, the top of the bolt column of the expansion bolt is located in the receiving cavity of the tapping connector;

[0009] The support frame comprises a limiting plate and a receiving space corresponding to the expansion bolt below the limiting plate; the tapping connector passes through the receiving space to above the limiting plate;

[0010] A pulling assembly is connected with the part of the tapping connector above the limiting plate, and the limiting plate can limit the moving direction of the pulling assembly towards the ground; the pulling assembly is configured to apply force to the part of the tapping connector above the limiting plate, so as to pull out the expansion tube of the expansion bolt from the ground through the tapping connector.

[0011] Optionally, the pulling device further comprises a driving member;

[0012] The top of the tapping connector extends upward to form a driving structure; the driving member is configured to drive the driving structure to rotate and move the tapping connector towards the inner cavity of the expansion tube of the expansion bolt.

[0013] Optionally, the pulling assembly comprises a body part and an acting part screwed with the tapping connector;

[0014] The body part applies force to the acting part to pull out the tapping connector and the expansion tube of the expansion bolt from the ground.

[0015] Optionally, the support frame further comprises a support member for supporting on the ground, and the limiting plate is connected with the top of the support member;

[0016] The acting part is screwed with the part of the tapping connector above the limiting plate; the limiting plate limits the moving direction of the acting part towards the ground.

[0017] Optionally, a through hole is arranged at the center position of the limiting plate;

[0018] The top of the tapping connector passes through the accommodating space and the through hole to the upper side of the limiting plate in sequence.

[0019] Optionally, the support member is rotatably connected with the edge of the limiting plate;

[0020] When the pulling device is used, the support member is perpendicular to the limiting plate;

[0021] When the pulling device is not used, the support member is rotated to be attached to the bottom surface of the limiting plate.

[0022] Optionally, the diameter of the through hole is greater than the outer diameter of the expansion tube of the expansion bolt.

[0023] Optionally, a gasket is further arranged between the acting part and the limiting plate;

[0024] The gasket is provided with a through hole corresponding to the through hole, and the diameter of the through hole is smaller than the diameter of the through hole and greater than the outer diameter of the tapping connector;

[0025] The gasket is sleeved on the tapping connector.

[0026] Optionally, the acting part is a nut.

[0027] Optionally, the driving structure is a straight prism.

[0028] The beneficial effects of the present application are as follows:

[0029] In view of the problems existing in the prior art, the present application provides an expansion bolt pulling device. When it is necessary to pull out the expansion bolt located in the ground, the nut of the expansion bolt is first removed, at this time the top of the expansion tube of the expansion bolt is open, the bottom of the tapping connector is rotated and moved through the top opening of the expansion tube towards the inner cavity of the expansion tube of the expansion bolt, and the inner wall of the expansion tube is tapped under the action of the tapping connector outer wall thread, so as to connect the tapping connector and the expansion tube to form a whole, and then the support frame is placed, so that the tapping connector passes through the containing space to the upper side of the limiting plate, and the pulling assembly is used to exert a force on the part of the tapping connector above the limiting plate, so that the expansion tube of the expansion bolt is pulled out from the ground. When the tapping connector moves into the inner cavity of the expansion tube of the expansion bolt, the containing cavity of the tapping connector can contain the bolt column of the expansion bolt, so that the bolt column does not affect the use of the tapping connector during the tapping process of the inner wall of the expansion tube. When the pulling assembly exerts a force on the part of the tapping connector above the limiting plate, the limiting plate can limit the movement of the pulling assembly towards the ground. The expansion bolt pulling device provided by the present application not only can completely pull out the expansion bolt located in the ground, eliminate the safety hazards caused by later construction, but also has the advantages of simple structure, easy manufacturing, convenient operation, safety and reliability, can pull out the entire expansion bolt from the ground, will not damage the expansion bolt during the pulling process, can realize the reuse of the expansion bolt, and can save resources and reduce costs. BRIEF DESCRIPTION OF DRAWINGS

[0030] The specific embodiments of the present application will be further described in detail below with reference to the accompanying drawings.

[0031] Fig. 1 An overall structure schematic diagram of the expansion bolt pulling device in one embodiment of the present application is shown.

[0032] Fig. 2 A structure schematic diagram of the support frame in the expansion bolt pulling device in one embodiment of the present application is shown.

[0033] Fig. 3 A longitudinal sectional view of the cooperation of the tapping connector and the driving part in the expansion bolt pulling device in one embodiment of the present application is shown. DETAILED DESCRIPTION

[0034] In the following description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of one or more embodiments. It can be evident, however, that embodiments can be practiced without

[0035] In the description of the present application, it needs to be explained that the orientation or positional relationship indicated by the terms "upper", "lower" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. Unless otherwise expressly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integral connection; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0036] It also needs to be explained that in the description of the present application, the relationship terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between the entities or operations. Moreover, the terms "include", "contain" or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or further includes elements inherent to such process, method, article or device. Without more limitations, the element defined by the sentence "including a" does not exclude the presence of other identical elements in the process, method, article or device including the element.

[0037] To solve the problems existing in the prior art, the present application provides an expansion bolt pulling device, as shown in Figs. 1-3As shown, the device comprises a tapping connector with a containing cavity 11 and an open bottom, and a thread 12 on the outer side wall of the tapping connector; the tapping connector is configured to rotate and move towards the inner cavity 23 of the expansion pipe 22 of the expansion bolt from the open top of the expansion pipe 22 of the expansion bolt, so as to tap the inner wall of the expansion pipe 22, in particular, the tapping connector taps the inner wall of the expansion pipe 22 under the action of the thread 12 on the outer side wall of the tapping connector; when the tapping connector moves into the inner cavity 23 of the expansion pipe 22 of the expansion bolt, the top of the bolt column 21 of the expansion bolt is located in the containing cavity 11 of the tapping connector; the pulling device further comprises a support frame; the support frame comprises a limiting plate 52, the top surface of the limiting plate 52 is a plane, and a containing space 53 corresponding to the expansion bolt is located below the limiting plate 52; the tapping connector passes through the containing space to above the limiting plate 52; the pulling device further comprises a connection with the part of the tapping connector above the limiting plate 52, and the limiting plate 52 can limit the movement of the pulling assembly towards the ground 10; the pulling assembly is configured to apply a force to the part of the tapping connector above the limiting plate 10, so as to pull out the expansion pipe 22 of the expansion bolt from the ground 10 through the tapping connector.

[0038] In the above embodiment of the present application, when the expansion bolt located in the ground 10 needs to be pulled out, the nut of the expansion bolt is first removed, at this time the top of the expansion pipe 22 of the expansion bolt is open, the bottom of the tapping connector moves towards the inner cavity 23 of the expansion pipe 22 of the expansion bolt through the open top of the expansion pipe 22, and the inner wall of the expansion pipe 22 is tapped under the action of the thread 12 on the outer side wall of the tapping connector, so that the tapping connector and the expansion pipe 22 are connected to form a whole, then the support frame is placed, the tapping connector passes through the containing space 53 to above the limiting plate 52, and the force applied by the pulling assembly to the part of the tapping connector above the limiting plate is applied, so that the expansion pipe 22 of the expansion bolt is pulled out from the ground 10. When the tapping connector moves into the inner cavity 23 of the expansion pipe 22 of the expansion bolt, the containing cavity 11 of the tapping connector can accommodate the bolt column 21 of the expansion bolt, so that the bolt column 21 does not affect the use of the tapping connector during the tapping of the inner wall of the expansion pipe 22. When the pulling assembly applies a force to the part of the tapping connector above the limiting plate 52, the limiting plate 52 can limit the movement of the pulling assembly towards the ground 10. The expansion bolt pulling device provided by the present application can not only completely pull out the expansion bolt located in the ground 10 from the ground 10, but also eliminate the safety hazards caused by later construction, and has the advantages of simple structure, easy manufacturing, convenient operation, safety and reliability, and the like. The entire expansion bolt can be pulled out from the ground 10, and the expansion bolt will not be damaged during the pulling process, so that the expansion bolt can be reused, resources can be saved, and costs can be reduced.

[0039] In practical application, after the expansion bolt is pulled out from the ground 10, the worker can easily separate the tapping connector from the expansion tube 22.

[0040] In a specific embodiment, the pulling device further comprises a driving member 4; the top of the tapping connector extends upward to form a driving structure 13; the driving member 4 is configured to drive the driving structure 13 to rotate the tapping connector to move towards the inner cavity 23 of the expansion tube 22 of the expansion bolt. In this way, only the driving member 4 is needed to drive the driving structure 13 to rotate the tapping connector to move towards the inner cavity 23 of the expansion tube 22 of the expansion bolt, without damaging the threads 12 on the outer side wall of the tapping connector, so as not to affect the use of the tapping connector. Specifically, the driving structure 13 can be a straight prism, such as a cube, a hexagonal prism, or an octagonal prism; in practical application, as long as the shape of the driving structure 13 can be used in cooperation with the driving member 4 to realize the rotation of the tapping connector, it is acceptable.

[0041] In a specific embodiment, the pulling assembly comprises a body part (not shown in the figure) and an acting part 3 screwed with the tapping connector, the acting part 3 can be a nut; the body part applies force to the acting part 3 to pull the tapping connector and the expansion tube 22 of the expansion bolt out of the ground 10. When the pulling assembly needs to pull the tapping connector and the expansion tube 22 out of the ground 10, the body part can rotate the acting part 3 by applying force to the acting part 3, thereby driving the tapping connector and the expansion tube 22 to move upwards and thereby separate from the ground 10. Compared with directly applying force to the tapping connector, the body part applies force to the acting part 3, which requires less force and can easily pull the tapping connector and the expansion tube 22 out of the ground 10, and the body part will not damage the tapping connector.

[0042] In a specific embodiment, the support frame further comprises a support member 51 for supporting on the ground 10, the support member 51 can be a support rod, and there are multiple support rods, and the distance between the expansion bolt in the ground 10 and the support member 51 is 5-200 mm. The limiting plate 52 is connected to the top of the support member 51; the acting part 3 and the part of the tapping connector above the limiting plate 52 are screwed; the limiting plate 52 limits the movement of the acting part 3 towards the ground 10. By rotating the acting part 3 with the body part to move the acting part 3 towards the limiting plate 52 until the acting part 3 abuts against the top surface of the limiting plate 52, the limiting of the acting part 3 is realized, at this time, the body part of the pulling assembly continues to apply force to the acting part 3 to drive the tapping connector and the expansion tube 22 to move upwards and thereby separate from the ground 10. Here, the body part of the pulling assembly can continue to rotate the acting part 3 to move the tapping connector and the expansion tube 22 upwards.

[0043] In a specific example, the center of the limiting plate 52 is provided with a through hole 521; the top of the threaded connecting piece passes through the accommodating space 53 and the through hole 521 to the upper side of the limiting plate 52 in sequence. The diameter of the through hole 521 is greater than the outer diameter of the expansion tube 22 of the expansion bolt. In this way, the threaded connecting piece can smoothly pass through the through hole 521 to the upper side of the limiting plate 52, and the pulling-out assembly can pull out the threaded connecting piece and the expansion tube 22 from the ground 10.

[0044] In a specific embodiment, the edge of the support 51 and the limiting plate 52 are rotatably connected; when the pulling-out device is used, the support 51 is perpendicular to the limiting plate 52; that is, the extension direction of the support is perpendicular to the top surface of the limiting plate 52, and the support frame is in a supporting state; when the pulling-out device is not used, the support 51 is rotated to be attached to the bottom surface of the limiting plate 52, the support frame is in a folded state, and the support 51 is rotated to be attached to the bottom surface of the limiting plate 52, thereby reducing the occupied space of the support frame. In this way, the use state of the support frame can be controlled according to the use of the support frame.

[0045] In a specific embodiment, a gasket 6 is further arranged between the acting part 3 and the limiting plate 52; the gasket 6 is provided with a through hole corresponding to the through hole 521, the diameter of the through hole is smaller than the diameter of the through hole 521, and greater than the outer diameter of the threaded connecting piece; the gasket 6 is sleeved on the threaded connecting piece. In this way, the bottom surface of the acting part 3 is in contact with the gasket 6, compared with directly abutting against the top surface of the limiting plate 52, the contact area of the acting part 3 and the gasket 6 is increased, and the stability of the acting part 3 is further improved.

[0046] The use process of the expansion bolt pulling-out device provided in the application is as follows:

[0047] First, the nut of the expansion bolt is removed, at this time the top of the expansion tube 22 of the expansion bolt is open, the driving part 4 drives the driving structure 13 at the top of the threaded connecting piece to rotate and move the threaded connecting piece to the inner cavity 23 of the expansion tube 22, and in the moving process, the outer side wall thread 12 of the threaded connecting piece threads the inner wall of the expansion tube 22, so that the threaded connecting piece is connected with the expansion tube 22 to form an integral whole; secondly, the support frame is unfolded, the support 51 is perpendicular to the limiting plate 52, and then the limiting plate 52, the gasket 6 and the acting part 3 of the pulling-out assembly are sleeved on the threaded connecting piece in sequence, the acting part 3 is rotated until it abuts against the gasket 6, and the body part of the pulling-out assembly continues to apply force to the acting part 3, that is, the acting part 3 is rotated, so as to pull out the threaded connecting piece and the expansion tube 22 of the expansion bolt from the ground 10.

[0048] Obviously, the above embodiments of the present application are merely examples for clearly illustrating the present application, and are not intended to limit the implementation manners of the present application, and for those skilled in the art, on the basis of the above description, other different forms of changes or variations can be made, and all the implementation manners cannot be exhausted here, and any obvious changes or variations derived from the technical solutions of the present application still fall within the protection scope of the present application.

Claims

1. A device for pulling out expansion bolts, characterized in that, The application relates to a tapping connector, which has a containing cavity and an open bottom, and has threads on the outer side wall of the tapping connector; the tapping connector is configured to rotate and move the open top of the tapping connector towards the inner cavity of the expansion pipe of the expansion bolt, so as to tap the inner wall of the expansion pipe of the expansion bolt; when the tapping connector moves into the inner cavity of the expansion pipe of the expansion bolt, the top of the bolt column of the expansion bolt is located in the containing cavity of the tapping connector. A support frame comprises a limiting plate and a containing space corresponding to the expansion bolt below the limiting plate; the tapping connector passes through the containing space to the upper side of the limiting plate. A pulling-out assembly is connected with the tapping connector; the limiting plate can limit the movement of the pulling-out assembly towards the ground; the pulling-out assembly is configured to apply force to the part of the tapping connector above the limiting plate, so as to pull out the expansion pipe of the expansion bolt from the ground through the tapping connector. The pulling-out device further comprises a driving member.

2. An expansion bolt extractor according to claim 1, wherein, The top of the tapping connector extends upwards to form a driving structure; the driving member is configured to drive the driving structure to rotate and move the tapping connector towards the inner cavity of the expansion pipe of the expansion bolt. The pulling-out assembly comprises a body part and an acting part screwed with the tapping connector.

3. An expansion bolt extractor according to claim 1, wherein, The body part applies force to the acting part to pull out the tapping connector and the expansion pipe of the expansion bolt from the ground. The support frame further comprises a support member for supporting on the ground; the limiting plate is connected with the top of the support member.

4. An expansion bolt extractor according to claim 3, wherein, The acting part is screwed with the part of the tapping connector above the limiting plate. The limiting plate limits the movement of the acting part towards the ground. A through hole is arranged at the central position of the limiting plate.

5. An expansion bolt extractor according to claim 4, wherein, The top of the tapping connector passes through the containing space and the through hole to the upper side of the limiting plate in sequence. The support member is rotatably connected with the edge of the limiting plate.

6. An expansion bolt extractor according to claim 4 wherein, When the pulling-out device is used, the support member is perpendicular to the limiting plate. When the pulling-out device is not used, the support member is rotated to be attached to the bottom surface of the limiting plate. The diameter of the through hole is larger than the outer diameter of the expansion pipe of the expansion bolt.

7. An expansion bolt extractor according to claim 5 wherein, A gasket is further arranged between the acting part and the limiting plate.

8. The expansion bolt extractor of claim 5, wherein, The gasket is provided with a through hole corresponding to the through hole; the diameter of the through hole is smaller than the diameter of the through hole and larger than the outer diameter of the tapping connector. The gasket is sleeved on the tapping connector. The acting part is a nut.

9. The expansion bolt extractor of claim 3, wherein, The driving structure is a straight prism.

10. The expansion bolt extractor of claim 2, wherein, ​

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