CN212553668U

CN212553668U - Bolt and nut extractor

Info

Publication number: CN212553668U
Application number: CN202021237475.XU
Authority: CN
Inventors: 万济录; 姜思君; 陈俊杰; 孙博文; 赵严伟; 王鹏安; 卢秋佐; 崔石柱; 李越星; 马怀阳
Original assignee: FAW Group Corp
Current assignee: FAW Group Corp
Priority date: 2020-06-29
Filing date: 2020-06-29
Publication date: 2021-02-19
Anticipated expiration: 2030-06-29

Abstract

The utility model relates to the technical field of auxiliary tools, in particular to a bolt and nut extractor which comprises a fixing part, an outer sleeve and a plurality of clamping jaws, wherein a plurality of inclined holes are arranged on the fixing part at intervals, the included angle between the central line of each inclined hole and the central line of the fixing part is equal, the plurality of clamping jaws are arranged in the plurality of inclined holes in a one-to-one correspondence manner, each clamping jaw comprises a screw rod and a clamping head arranged at one end of the screw rod, the central lines of the plurality of screw rods are all positioned on the same conical profile surface, and each clamping head is positioned at one end with smaller outer diameter of the conical profile surface; the fixing piece is located to the overcoat ability cover with rotating, and the overcoat respectively with each screw rod screw-thread fit, can drive a plurality of screw rods and rotate simultaneously when rotating the overcoat to make a plurality of screw rods remove simultaneously, in order to clamp or loosen the bolt or the nut that will treat to take out, if the chuck damages, can change the clamping jaw alone, the cost is lower.

Description

Bolt and nut extractor

Technical Field

The utility model relates to an appurtenance technical field especially relates to a bolt and nut extractor.

Background

The nut and the bolt which are worn, rusted and covered with the paint coating on the automobile or the processing equipment are difficult to disassemble at present, the nut or the bolt are clamped by clamping tools such as a vice and the like mostly to be disassembled, a large amount of manpower is consumed in the disassembling process, the nut or the bolt is difficult to disassemble, and the nut or the bolt is easy to slide and cause the failure of the disassembling process.

In contrast, in the bolt and nut extractor disclosed in the earlier application with the application number of cn201621221523.x, in the prior art, an outer tapered hole having a diameter larger at one end than at the other end is formed at one end of the extractor, a tooth socket structure extending along a bus is formed on an inner side wall of the outer tapered hole, a cross section of the outer tapered hole at one end of the extractor is in a polygonal star-shaped structure, an operation handle is formed at the other end of the extractor, the engaged bolt or nut is pressed by reducing the diameter of the taper in the outer tapered hole, and then the operation handle is rotated to rapidly extract the damaged bolt and nut. However, the size of the outer taper hole of the bolt and nut extractor is fixed, and if the polygonal star-shaped structure is damaged or teeth are slipped, the bolt and nut extractor cannot be used any more, so that the bolt and nut extractor needs to be integrally replaced, and the cost is high.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a: the utility model provides a bolt and nut extractor to solve bolt and nut extractor among the correlation technique and pass through outer taper hole and take out bolt or nut, outer taper hole size is fixed, if the damage of polygonal star structure or smooth tooth, will lead to bolt and nut extractor to reuse, needs whole change, the higher problem of cost.

The utility model provides a bolt and nut extractor, this bolt and nut extractor includes:

the fixing piece is provided with a plurality of inclined holes at intervals, and the included angle between the central line of each inclined hole and the central line of the fixing piece is equal;

the clamping jaws penetrate through the inclined holes in a one-to-one correspondence mode, each clamping jaw comprises a screw and a chuck arranged at one end of the corresponding screw, the central lines of the screws are located on the same conical profile surface, and each chuck is located at one end, with the smaller outer diameter, of the conical profile surface;

the outer sleeve can be rotatably sleeved on the fixing piece, and the outer sleeve is in threaded fit with the screw rods respectively.

As a preferred technical scheme of the bolt and nut extractor, the fixing piece is provided with through holes extending in the vertical direction, each inclined hole is formed in the hole wall of each through hole and communicated with the through holes, and each chuck is located in each through hole.

As a preferred technical scheme of the bolt and nut extractor, a tangent plane is arranged on the screw rod and is parallel to the central line of the fixing piece, and the chuck is arranged on the tangent plane.

As a preferable technical scheme of the bolt and nut extractor, the clamping head is in a shape of a knife edge, and the clamping head is obliquely arranged along the anticlockwise direction relative to the tangent plane.

As a preferred technical scheme of the bolt and nut extractor, the outer sleeve is provided with an accommodating cavity, one end of the accommodating cavity is provided with an opening, the fixing piece is inserted into the opening, one end of the fixing piece extends into the accommodating cavity, and the end of the screw rod, which is far away from the chuck, extends into the accommodating cavity;

the side wall of the opening is at least partially provided with a conical internal thread, and the internal thread is in threaded fit with the external thread of the screw.

As the preferred technical scheme of bolt and nut extractor, the protruding arch that is equipped with of inner wall that holds the chamber, the outer peripheral face of mounting is equipped with the annular, protruding peg graft in the annular, just the arch can in slide in the annular.

As the preferable technical scheme of the bolt and nut extractor, the outer sleeve is provided with a jack which is used for being matched with the torque wrench.

As a preferred technical scheme of the bolt and nut extractor, the bolt and nut extractor further comprises a handle, and the handle is arranged on the outer sleeve.

As a preferred technical scheme of the bolt and nut extractor, the inclined holes are uniformly distributed in the circumferential direction of the fixing piece.

As a preferable technical scheme of the bolt and nut extractor, the number of the inclined holes and the number of the clamping jaws are six.

The utility model has the advantages that:

the utility model provides a bolt and nut extractor, this bolt and nut extractor include mounting, overcoat and a plurality of clamping jaw. The clamping jaws comprise screw rods and clamping heads arranged at one end of the screw rods, the central lines of the screw rods are all positioned on the same conical profile surface, and each clamping head is positioned at one end with a smaller outer diameter of the conical profile surface; the fixing piece is sleeved with the outer sleeve in a rotatable mode, and the outer sleeve is in threaded fit with each screw respectively. When the outer sleeve is rotated, the outer sleeve can drive the plurality of screw rods to rotate simultaneously, so that the plurality of screw rods can feed along the central line direction of the inclined hole simultaneously, the aperture of the round hole surrounded by the plurality of chucks can be adjusted, and then the plurality of chucks can clamp or loosen the bolt or the nut to be taken out.

Drawings

Fig. 1 is a sectional view of a bolt and nut extractor according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of the bolt and nut extractor in the embodiment of the present invention.

In the figure:

1. a fixing member; 11. an inclined hole; 12. a through hole; 13. a ring groove;

2. a jacket; 21. an accommodating chamber; 22. an opening; 23. a protrusion; 24. a jack;

3. a clamping jaw; 31. a screw; 311. cutting into noodles; 32 clamp heads.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. 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.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Where the terms "first position" and "second position" are two different positions, and where a first feature is "over", "above" and "on" a second feature, it is intended that the first feature is directly over and obliquely above the second feature, or simply means that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

As shown in fig. 1-2, the present embodiment provides a bolt and nut extractor, which includes a fixing member 1, an outer sleeve 2 and a plurality of clamping jaws 3. Wherein, a plurality of inclined holes 11 are arranged on the fixing member 1 at intervals, and the included angle between the central line of each inclined hole 11 and the central line of the fixing member 1 is equal. The clamping jaws 3 are correspondingly arranged in the inclined holes 11 in a penetrating mode one by one, each clamping jaw 3 comprises a screw 31 and a clamping head 32 arranged at one end of each screw 31, the central lines of the screws 31 are all located on the same conical profile surface, and each clamping head 32 is located at one end, with the smaller outer diameter, of the conical profile surface; the outer sleeve 2 can be rotatably sleeved on the fixing member 1, and the outer sleeve 2 is in threaded fit with each screw 31 respectively. It can be understood that the central lines of the plurality of inclined holes 11 are also located on the tapered profile surface, and when the outer sleeve 2 is rotated, the outer sleeve 2 can drive the plurality of screw rods 31 to rotate simultaneously, so that the plurality of screw rods 31 move along the central line direction of the inclined holes 11 simultaneously, the spacing between the plurality of chucks 32 can be adjusted, and the plurality of chucks 32 can clamp or loosen the bolts or nuts to be taken out. If the chuck 32 is damaged, the clamping jaws 3 can be replaced independently, and the cost is lower.

Specifically, in this embodiment, the central line of mounting 1 extends along vertical direction, and during the equipment bolt and nut extractor, adjust the chuck 32 of a plurality of clamping jaws 3 to being located same horizontal plane to being located same circular profile, so set up a plurality of chucks 32 of being convenient for and act on the bolt or the nut of treating taking out simultaneously, guarantee to treat the centre gripping stability of taking out bolt or nut. Preferably, the plurality of inclined holes 11 are uniformly distributed in the circumferential direction of the fixing member 1. The number of the inclined holes 11 and the clamping jaws 3 is six. In other embodiments, the number of the inclined holes 11 and the clamping jaws 3 can be set according to requirements.

Optionally, the fixing member 1 is provided with a through hole 12 extending in a vertical direction, each inclined hole 11 is disposed on a hole wall of the through hole 12, the inclined holes 11 communicate with the through hole 12, and each chuck 32 is located in the through hole 12. So set up, be convenient for assemble mounting 1 and a plurality of clamping jaw 3.

Optionally, the screw 31 is provided with a cut surface 311, the cut surface 311 is parallel to the central line of the fixing member 1, and the chuck 32 is disposed on the cut surface 311. By providing the cut surface 311, the diameter of the circular profile in which the plurality of cartridges 32 are located can be increased. In contrast, when the same size of bolt or nut to be taken out is used, the size of the fixing member 1 can be relatively small, and the whole structure of the bolt and nut extractor is more compact. Preferably, the collet 32 has a blade shape, and the collet 32 is inclined in a counterclockwise direction with respect to the tangent plane 311. The blade-shaped collet 32 facilitates the tightening of the bolt or nut to be removed. Because when the bolt or the nut to be taken out is unscrewed, the bolt or the nut to be taken out usually rotates along the anticlockwise direction, so that the chuck 32 is obliquely arranged relative to the tangent plane 311 along the anticlockwise direction, and the chuck 32 can be tightly abutted against the bolt or the nut to be taken out along the rotating direction during the unscrewing operation, and the bolt or the nut is not easy to slip.

Optionally, the outer sleeve 2 has an accommodating cavity 21, one end of the accommodating cavity 21 is provided with an opening 22, the fixing member 1 is inserted into the opening 22, and one end of the fixing member extends into the accommodating cavity 21, and one end of the screw 31, which is far away from the chuck 32, extends into the accommodating cavity 21; the side wall of the opening 22 is at least partially provided with a conical internal thread which is threadedly engaged with the external thread of the screw 31. In this embodiment, the top end of the screw rod 31 extends out of the inclined hole 11 and is located outside the fixing member 1, the bottom end of the screw rod 31 is provided with the chuck 32, and it can be understood that the inner diameter of the accommodating cavity 21 is not smaller than the outer diameter of the large end of the tapered profile surface, so that the top of the fixing member 1 and the part of the screw rod 31 extending out of the fixing member 1 can be wrapped by the outer sleeve 2, and the whole appearance is more attractive.

Optionally, the outer sleeve 2 is provided with a square insertion hole 24, the depth direction of the insertion hole 24 coincides with the central line direction of the insertion hole 24, and the insertion hole 24 is used for being matched with a torque wrench. The outer sleeve 2 is rotated by the torque wrench, so that labor is saved. As an alternative, a handle may also be provided on the outer sleeve 2, and the handle may drive the outer sleeve 2 to rotate relative to the fixing member 1.

In this embodiment, the inner wall of the accommodating cavity 21 is provided with a protrusion 23 in a protruding manner, the circumferential surface of the fixing member 1 is provided with a ring groove 13, the protrusion 23 is inserted into the ring groove 13, and the protrusion 23 can slide in the ring groove 13. So arranged, when the outer sleeve 2 is rotated, the outer sleeve 2 only rotates relative to the fixing member 1, and is not fed in the direction of the center line of the fixing member 1. In other embodiments, also can set up the connecting rod on the chamber wall that holds chamber 21 of overcoat 2, the central line of connecting rod and the coincidence of the central line of opening 22 establish the mounting hole on mounting 1, the connecting rod passes the mounting hole to the connecting rod can rotate in the mounting hole, is fixed with two on the connecting rod respectively and ends the position card protruding, and two end the position card protruding and set up respectively in the both sides of mounting hole, through two end protruding restriction connecting rods of card and mounting 1 along vertical direction position relative position. So set up, can realize overcoat 2 and mounting 1 normal running fit equally.

It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A bolt and nut extractor, comprising:

the fixing piece (1) is provided with a plurality of inclined holes (11) at intervals, and included angles between the central line of each inclined hole (11) and the central line of the fixing piece (1) are equal;

the clamping jaws (3) are correspondingly arranged in the inclined holes (11) in a penetrating mode, each clamping jaw (3) comprises a screw rod (31) and a clamping head (32) arranged at one end of each screw rod (31), the central lines of the screw rods (31) are located on the same conical profile surface, and each clamping head (32) is located at one end, with the smaller outer diameter, of the conical profile surface;

the fixing piece (1) is sleeved with the outer sleeve (2) in a rotatable mode, and the outer sleeve (2) is in threaded fit with the screw rods (31) respectively.

2. The bolt and nut extractor according to claim 1, wherein said fixed member (1) is provided with a through hole (12) extending in a vertical direction, each of said inclined holes (11) is provided on a wall of said through hole (12), and said inclined holes (11) communicate with said through hole (12), and each of said chucks (32) is located in said through hole (12).

3. The bolt and nut extractor according to claim 1, wherein said screw (31) is provided with a cut surface (311), said cut surface (311) is parallel to the center line of said fixed member (1), and said collet (32) is provided on said cut surface (311).

4. The bolt and nut extractor according to claim 3, wherein said collet (32) is in the shape of a knife edge, and said collet (32) is disposed obliquely in a counterclockwise direction with respect to said tangent plane (311).

5. The bolt and nut extractor according to claim 1, characterized in that the outer sleeve (2) has a containing cavity (21), an opening (22) is arranged at one end of the containing cavity (21), the fixing member (1) is inserted into the opening (22) and one end of the fixing member extends into the containing cavity (21), and one end of the screw rod (31) far away from the clamping head (32) extends into the containing cavity (21);

the side wall of the opening (22) is at least partially provided with a conical internal thread which is in threaded fit with the external thread of the screw (31).

6. The bolt and nut extractor according to claim 5, characterized in that the inner wall of the containing cavity (21) is protruded with a protrusion (23), the outer peripheral surface of the fixing member (1) is provided with a ring groove (13), the protrusion (23) is inserted into the ring groove (13), and the protrusion (23) can slide in the ring groove (13).

7. Bolt and nut extractor according to any one of claims 1-6, characterized in that the outer sleeve (2) is provided with a socket (24), said socket (24) being adapted to cooperate with a torque wrench.

8. Bolt and nut extractor according to any of claims 1-6, characterized in that it further comprises a handle, which is arranged to the casing (2).

9. The bolt and nut extractor according to any one of claims 1 to 6, wherein a plurality of said inclined holes (11) are uniformly distributed in the circumferential direction of said fixing member (1).

10. Bolt-and-nut extractor according to any one of claims 1 to 6, characterized in that the number of said inclined holes (11) and said jaws (3) is six.