CN215240630U

CN215240630U - Broken bolt taking-out device and guiding device thereof

Info

Publication number: CN215240630U
Application number: CN202121192472.3U
Authority: CN
Inventors: 何李荣
Original assignee: China General Nuclear Power Corp; CGN Power Co Ltd; China Nuclear Power Operation Co Ltd
Current assignee: China General Nuclear Power Corp; CGN Power Co Ltd; China Nuclear Power Operation Co Ltd
Priority date: 2021-05-31
Filing date: 2021-05-31
Publication date: 2021-12-21
Anticipated expiration: 2031-05-31

Abstract

The utility model relates to a disconnected bolt remove device and guider thereof. The guide is used when the broken bolt is taken out from the first threaded hole of the main body part. The guide device includes: the positioning part is used for being fixed on the end face, provided with the first threaded hole, of the main body part; and the axial direction of the guide sleeve is used for corresponding to the axial direction of the first threaded hole, and the guide sleeve can be positioned by the positioning part, so that the position of the guide sleeve can be positioned at the outer side of the first threaded hole. When the broken bolt needs to be taken out from the first threaded hole of the main body part, the positioning part is fixed on the end face. And the positioning part limits the position of the guide sleeve, so that the position accuracy of the guide sleeve can be ensured. The accessible inserts the drill bit (not shown) of electric drill in the hole of uide bushing and gets into first threaded hole through the uide bushing, and then the drill bit of electric drill can punch the disconnected bolt that remains in first threaded hole, is difficult for beating partially, therefore is difficult for damaging the main part in first threaded hole department.

Description

Broken bolt taking-out device and guiding device thereof

Technical Field

The utility model relates to an electric actuator overhauls technical field, in particular to disconnected bolt remove device and guider thereof.

Background

Berander, Bernard Controls s.a., france, is one of the leading manufacturers of electric actuators in the world. Referring to fig. 1, an electric actuator 1 manufactured by this company includes: an actuator body 10, a motor 20, and a controller 30. The motor 20 and the controller 30 are connected to the actuator body 10, respectively. The actuator body 10 includes a housing 11 and a transmission mechanism (not shown) and the like located inside the housing 11. The bottom of the housing 11 is provided with a base 12 having a circular outer contour. The housing 11 includes a body portion 11a and a cover portion 11 b. Referring to fig. 2 to 4, the main body portion 11a has an inner cavity 11c having a substantially cylindrical structure, and components such as a transmission mechanism are mounted in the inner cavity 11 c. The cover portion 11b covers the main portion 11a and is fixedly connected to the main portion 11a so as to close the opening of the internal cavity 11c, so that components such as a transmission mechanism are enclosed in the housing 11. The end surface 11j of the main body portion 11a is opened with a plurality of screw holes (11d, 11e, 11f, 11g, 11h, 11i), and the screw holes (11d, 11e, 11f, 11g, 11h, 11i) are respectively used for matching with bolts (not shown) so as to fixedly connect the main body portion 11a with the cover portion 11b through the bolts.

However, when the body portion 11a and the cover portion 11b are fixedly connected by bolts, each bolt can be screwed into the corresponding screw hole (11d, 11e, 11f, 11g, 11h, 11i) of the body portion 11 a. During the process of tightening the bolt, the bolt may be broken, and a part of the broken bolt may remain in the corresponding screw hole (any one of 11d, 11e, 11f, 11g, 11h, and 11i) of the main body portion 11a and be difficult to remove, thereby making it difficult to continuously fixedly connect the main body portion 11a and the cover portion 11 b.

The traditional method for taking out the broken bolt is generally as follows: the broken bolt remaining in the threaded hole of the body portion 11a is drilled by an electric drill and then is screwed out of the threaded hole by reverse tapping. However, the electric drill is liable to be deviated during drilling, and thus is liable to cause damage to the body portion 11a at the threaded hole. The main body 11a is generally made of aluminum alloy, and the broken bolt is made of steel, so that the main body 11a is weaker, and the main body 11a is more easily damaged.

SUMMERY OF THE UTILITY MODEL

In view of the above, it is necessary to provide a broken bolt removing apparatus and a guiding apparatus thereof, which are not easy to damage the main body portion during the process of removing the broken bolt, in order to solve the problem that the conventional method of removing the broken bolt easily damages the main body portion at the threaded hole.

The embodiment of the application provides a guider for use when taking out disconnected bolt from the first screw hole of main part, wherein, guider includes:

the positioning part is used for being fixed on the end face of the main body part, wherein the end face is provided with the first threaded hole; and

the axial direction of the guide sleeve is used for being arranged corresponding to the axial direction of the first threaded hole, and the guide sleeve can be positioned by the positioning part, so that the position of the guide sleeve can be positioned outside the first threaded hole.

When the broken bolt needs to be taken out from the first threaded hole of the main body part, the positioning part is fixed on the end face. And the positioning part limits the position of the guide sleeve, so that the position accuracy of the guide sleeve can be ensured. The drill bit (not shown) of the electric drill can be inserted into the inner hole of the guide sleeve and enters the first threaded hole through the guide sleeve, and then the drill bit of the electric drill can punch the broken bolt remained in the first threaded hole. The uide bushing can play the guide effect, and then the drill bit of electric drill can accurately get into first threaded hole and punch to disconnected bolt, is difficult for beating partially, therefore is difficult for damaging the main part in first threaded hole department.

Further, since the guide device has the positioning portion, the positioning portion may be provided on the end surface of the main body portion, and therefore, the guide sleeve is positioned by the positioning portion, so that the end surface of one end of the guide sleeve, which is close to the broken bolt, may be located on the end surface of the main body portion or may be higher than the end surface of the main body portion in the first direction, and thus, the position of the guide sleeve may be located on the outer side in the axial direction of the first threaded hole. If the fracture face of disconnected bolt just in time is located the tip opening part of first screw hole, then, the uide bushing need not to insert first screw hole downthehole, also can be fixed a position by location portion to can play the guide effect when the electric drill punches disconnected bolt.

In an embodiment, the positioning portion is provided with a positioning hole, and the guide sleeve is located in the positioning hole and is matched with the positioning hole.

In one embodiment, the inner wall of the positioning hole is provided with an internal thread, the outer wall of the guide sleeve is provided with an external thread, and the guide sleeve and the positioning hole are matched through the external thread and the internal thread.

In one embodiment, the positioning portion is provided with a connecting hole, and the connecting hole is used for corresponding to the second threaded hole of the main body portion;

the guide device further comprises: and the threaded connecting piece is used for being matched with the connecting hole and the second threaded hole respectively.

In one embodiment, the inner diameter of the positioning hole is larger than that of the connecting hole.

In one embodiment, the number of the connecting holes is two, and the two connecting holes are respectively positioned on different sides of the positioning hole; or

The number of the connecting holes is more than three.

In one embodiment, the positioning part has an inner edge in a circular arc shape or a circular shape;

the guide device further comprises a radial shielding part, the radial shielding part is arranged on the positioning part and protrudes out of the surface of the positioning part along a first direction, and the first direction is along the arc-shaped or circular axial direction; the radial shielding part is positioned on one side of the guide sleeve in a second direction, wherein the second direction is inward along the arc or the circular radial direction.

In one embodiment, the guide device further comprises: an axial shielding portion; one end of the radial shielding part is fixedly connected with the positioning part, and the other end of the radial shielding part is fixedly connected with the axial shielding part; and the axial shielding part exceeds the radial shielding part along a third direction, wherein the third direction is outward along the radial direction of the circular arc or the circle.

In one embodiment, the guiding device further comprises an adjusting bushing for inserting into the guiding sleeve and fitting with the guiding sleeve.

Still another embodiment of the present application provides a broken bolt removing apparatus, including any one of the above-mentioned guiding device, a punching tool, and a removing tool.

Drawings

FIG. 1 is a front view of a Bernard electric actuator;

FIG. 2 is a top view of the electric actuator of FIG. 1;

FIG. 3 is a left side view of the electric actuator of FIG. 1;

FIG. 4 is a top plan view of a main body portion of a housing of the actuator body of the electric actuator of FIG. 1;

FIG. 5 is a schematic view of an embodiment of a guide device;

FIG. 6 is an exploded view of the guide of FIG. 5;

FIG. 7 is a schematic structural view of another embodiment of a guide device;

FIG. 8 is a schematic view of the connection of the guide sleeve and the adjustment bushing of the guide device of FIG. 5;

fig. 9 is a schematic structural view of a guide device according to yet another embodiment.

The reference numbers illustrate:

an electric actuator 1;

an actuator body 10; a housing 11; a body portion 11 a; an end face 11 j; a cover portion 11 b; a base 12; a motor 20; a controller 30;

an inner cavity 11 c; the first threaded hole 11 d;

second screw holes

11e, 11f, 11g, 11h, 11 i;

a guide device 100;

a positioning part 110; a positioning hole 101; an inner edge 111; an arc-shaped groove 111 a; a connection hole 102;

a guide sleeve 120;

the radial shielding portion 131; an axial shielding portion 132; a relief hole 103;

an adjustment bushing 140; a flange 141.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

Referring to fig. 5 and 6, an embodiment of the present application provides a guiding device 100. The guide 100 includes a positioning part 110 and a guide sleeve 120.

Referring again to fig. 4, the guide 100 is used when removing a broken bolt (not shown) from the first threaded hole 11d of the body portion 11 a. The body portion 11a has an end face 11 j. The end face 11j is adapted to cooperate with an end face of the cover part 11b to effect connection of the body part 11a to the cover part 11 b. A plurality of screw holes (11d, 11e, 11f, 11g, 11h, 11i) are provided on the end surface 11j of the body portion 11, respectively. As described in the background art, the bolt may be broken during the tightening of the bolt, and a part of the broken bolt may remain in the corresponding screw hole (any one of 11d, 11e, 11f, 11g, 11h, and 11i) of the main body portion 11a and be difficult to remove.

In the present embodiment, it is assumed that broken bolts remain in the threaded holes 11d, and broken bolts do not remain in the threaded holes (11e, 11f, 11g, 11h, 11i), and normal use is possible. Thus, the threaded holes can be divided into two types, namely, a first threaded hole 11d in which a broken bolt remains and a second threaded hole (11e, 11f, 11g, 11h, 11i) in which a broken bolt does not remain.

The positioning portion 110 is for being provided on the end face 11j of the main body portion 11 a. The guide sleeve 120 is axially arranged to correspond to the first threaded hole 11d, and the guide sleeve 120 can be positioned by the positioning portion 110 so that the position of the guide sleeve 120 can be outside the first threaded hole 11 d.

Specifically, as shown in fig. 5, the positioning part 110 has a plate shape having an inner edge 111 in a circular arc shape. The inner edge 111 is recessed to form an arcuate groove 111 a. The positioning part 110 includes a first portion 110a and a second portion 110b fixedly coupled. The outer edge of the first portion 110a and the outer edge of the second portion 110b are angled at approximately 120. The inner edge of the first portion 110a and the inner edge of the second portion 110b together constitute the above-mentioned circular arc-shaped inner edge 111.

As shown in fig. 4, since the outer edge of the end face 11j of the body portion 11a is substantially regular hexagonal, the inner edge is substantially circular, and the inner edge of the body portion 11a surrounds the opening of the internal cavity 11 a. Thus, when the positioning portion 110 is disposed on the end face 11j of the main body portion 11a, the outer edge of the positioning portion 110 (which is composed of the outer edge of the first portion 110a and the outer edge of the second portion 110 b) matches the outer edge of the end face 11j of the main body portion 11a, and the inner edge 111 of the positioning portion 110 matches the inner edge of the end face 11j of the main body portion 11 a.

When it is necessary to remove the broken bolt from the first threaded hole 11d of the main body portion 11a, the positioning portion 110 is provided on the end surface 11j, and for example, the positioning portion 110 may be fixed to the end surface 11j of the main body portion 11 a. And since the positioning part 110 defines the position of the guide sleeve 120, the position accuracy of the guide sleeve 120 can be ensured. When the position of uide bushing 120 was set up, the axis of uide bushing 120 and the axis coincidence of first screw hole 11d to, the accessible inserts the drill bit (not shown) of electric drill in the hole of uide bushing 120 and in getting into first screw hole 11d through uide bushing 120, and then the drill bit of electric drill can punch the broken bolt that remains in first screw hole 11 d. Therefore, the axial direction of the guide sleeve 120 corresponds to the axial direction of the first threaded hole 11d, so that the guide sleeve 120 can play a good guiding role, a drill bit of the electric drill can accurately enter the first threaded hole 11d to punch a broken bolt, deviation is not prone to occurring, and the main body part 11a is not prone to being damaged in the first threaded hole 11 d.

Further, the guide sleeve of the conventional broken bolt removing device must be inserted into the first threaded hole 11d and screwed with the first threaded hole 11d to be fixed for guiding. If the fracture surface of the broken bolt is located right at the end opening of the first threaded hole 11d and flush with the end surface 11j, then the guide sleeve of the conventional extracting device extracting tool cannot be inserted into the first threaded hole 11d for fixing, so that the guide function cannot be achieved.

Compared with the guide sleeve of the conventional broken bolt extracting tool, in the embodiment of the present application, since the guide device 100 has the positioning portion 110, the positioning portion 110 may be disposed on the end surface 11j of the main body portion 11a, and therefore, by positioning the guide sleeve 120 by the positioning portion 110, the end surface of the guide sleeve 120 near one end of the broken bolt may be located on the end surface 11j of the main body portion 11a or higher than the end surface 11j of the main body portion 11a in the first direction. The first direction is a direction of the guide sleeve 120 away from the broken bolt, and corresponds to an upward direction in fig. 1 and 3. Since the end surface of the guide sleeve 120 near the end of the broken bolt is located on the end surface 11j of the main body portion 11a or higher than the end surface 11j of the main body portion 11a in the first direction, the position of the guide sleeve 120 can be made to be outside in the axial direction of the first threaded hole 11 d. If the fracture surface of the broken bolt is just located at the end opening of the first threaded hole 11d, the guide sleeve 120 can be positioned by the positioning part 110 without being inserted into the first threaded hole 11d, and can play a guiding role when the electric drill punches the broken bolt.

Referring to fig. 6, in an embodiment, the positioning portion 110 is provided with a positioning hole 101. The guide sleeve 120 is positioned within the pilot hole 101 and fits into the pilot hole 101, so that the position of the guide sleeve 120 can be defined.

In this embodiment, the inner wall of locating hole 101 is equipped with internal thread (not shown), and the outer wall of uide bushing 120 is equipped with external screw thread (not shown), and uide bushing 120 cooperatees through external screw thread and internal thread with locating hole 101 to can be with uide bushing 120 and location portion 110 fixed connection, then, the electric drill is when the hole that inserts uide bushing 120 drills disconnected bolt, can prevent uide bushing 120 from rotating at will, is favorable to uide bushing 120's stability.

Of course, in other embodiments, the guide sleeve 120 and the positioning hole 101 may also adopt an interference fit, or: a protrusion may be provided on an outer wall of the guide sleeve 120, and the protrusion may be fixedly connected to the positioning portion 110 by an additional bolt, so as to ensure the positioning of the guide sleeve 120.

Referring to fig. 5 and 6, in an embodiment, the positioning portion 110 is provided with a connection hole 102, and the connection hole 102 is configured to correspond to the second threaded hole of the main body portion 11 a. The guide 100 also includes a threaded connection (not shown). The threaded connectors are adapted to mate with the attachment holes 102 and the second threaded holes, respectively.

Specifically, as shown in fig. 5 and 6, in the present embodiment, the number of the connection holes 102 is two, and the two connection holes are located on different sides of the positioning hole 101. As can be seen from fig. 4, when the positioning portion 110 is disposed on the end surface 11j of the main body portion 11a, the two connection holes 102 correspond to the second threaded hole 11h and the second threaded hole 11e, respectively.

The number of the screw-threaded coupling members may be two corresponding to the coupling holes 102. One of the screw-threaded connectors passes through the second screw hole 11h and the corresponding one of the connection holes 102, and the other passes through the other second screw hole 11e of the screw-threaded connector and the corresponding other of the connection holes 102, so that the positioning portion 110 can be securely fixed to the main body portion 11 a. The threaded connection is for example a bolt, a screw or the like.

Of course, the number of the connection holes 102 may be one, three or more, or other numbers. The number of threaded connectors corresponds one-to-one to the number of connection holes 102. When the number of the connection holes 102 is two or more, any number of the connection holes 102 may be selected to be matched with the corresponding screw connection member to realize the connection of the positioning portion 110 and the main body portion 11 a.

Referring to fig. 6, in an embodiment, the inner diameter of the positioning hole 101 is larger than the inner diameter of the connection hole 102.

Specifically, it can be understood that when the positioning portion 110 is provided on the end surface 11j when it is necessary to take out the broken bolt from the first threaded hole 11d of the main body portion 11a, the positioning hole 101 corresponds to the first threaded hole 11 d. The two connection holes 102 correspond to the second screw holes 11e and the second screw holes 11h, respectively, and are used to mate with corresponding screw connectors. Therefore, the inner diameter of the connection hole 102 can be made smaller as long as it can be matched with the threaded connection member.

The inner diameter of the positioning hole 101 is larger, so that the outer diameter of the guide sleeve 120 matched with the positioning hole 101 can be made larger, and the guide sleeve 120 can be conveniently inserted into the positioning hole 101. In addition, the outer diameter of the guide sleeve 120 is larger, so that the inner diameter of the guide sleeve 120 can be more flexibly arranged, and the guide sleeve 120 can be flexibly matched with electric drill bits with different outer diameters conveniently.

Further, it is understood that the first threaded hole 11d has the same inner diameter as the second threaded hole. The inner diameter of the connection hole 102 is the same as that of the second threaded hole. Since the inner diameter of the pilot hole 101 is larger than the inner diameter of the coupling hole 102, the inner diameter of the pilot hole 101 is larger than the inner diameter of the first threaded hole 11 d. Thus, the outer diameter of the guide sleeve 120 may be larger than the inner diameter of the first threaded hole 11 d. Then, when the guide sleeve 120 is placed in the positioning hole 101, the guide sleeve 120 does not fall into the first threaded hole 11d, and therefore, the end surface of the guide sleeve 120 close to the end of the broken bolt can be pressed against the surface of the positioning portion 110, which is beneficial to ensuring the reliable position of the guide sleeve 120 in the axial direction.

Referring to fig. 5 and 6, in an embodiment, the guiding device 100 further includes a radial shielding portion 131. The radial shielding portion 131 is disposed on the positioning portion 110 and protrudes from the surface of the positioning portion 110 along the first direction, and the radial shielding portion 131 is located on one side of the guide sleeve 120 in the second direction X. Wherein the first direction is the axial direction of the circular arc, and the second direction X is inward along the radial direction of the circular arc.

Specifically, as shown in fig. 5 and 6, in the present embodiment, the radial blocking portion 131 is located inside the guide sleeve 120 in the second direction X. More specifically, the radial shielding portion 131 is located at the inner edge 111 of the positioning portion 110.

As mentioned above, the first direction is the direction of the guide sleeve 120 away from the broken bolt, and corresponds to the upward direction in fig. 1 and 3. The first direction can also be considered as the axial direction of the circular arc, corresponding to fig. 5 and 6.

Since the radial shielding portion 131 protrudes from the surface of the positioning portion 110 in the first direction, when the positioning portion 110 is disposed on the end surface 11j, the radial shielding portion 131 is higher than the positioning portion 110 in the first direction.

Because the radial shielding part 131 is located on the inner side of the guide sleeve 120, and the radial shielding part 131 is higher than the positioning part 110, when the electric drill is inserted into the guide sleeve 120 and the first threaded hole 11d for drilling the broken bolt, metal debris generated in the drilling process can be shielded by the radial shielding part 131 from the second direction X, and the debris is prevented from entering the arc-shaped groove 111a, so that the debris can be prevented from entering the inner cavity 11c of the main body part 11a, and further the debris can be prevented from influencing the normal work of parts such as a transmission mechanism of the inner cavity 11 c.

Referring to fig. 7, in another embodiment, the guiding device 100 further includes an axial blocking portion 132. One end of the radial shielding portion 131 is fixedly connected (integrally formed) with the positioning portion 110, and the other end of the radial shielding portion 131 is fixedly connected (integrally formed) with the axial shielding portion 132. Also, the axial shielding portion 132 exceeds the radial shielding portion 131 in the third direction Y, which is radially outward of the circular arc shape.

Specifically, as shown in fig. 7, the axial shade portion 132 extends outward from the radial shade portion 131 in the third direction Y. When the positioning portion 110 is disposed on the end surface 11j, the axial shielding portion 132 is higher than the positioning portion 110 in the first direction, i.e., the axial shielding portion 132 is located on a side of the positioning portion 110 facing away from the broken bolt. That is, the axial direction shielding portion 132 can shield the positioning portion 110 from the first direction.

As shown in fig. 7, the axial blocking portion 132 is provided with an avoiding hole 103 (or may be an avoiding groove), and the position of the avoiding hole 103 corresponds to the guide sleeve 120, so that a drill bit of the electric drill can pass through the avoiding hole 103 and then enter the guide sleeve 120 and the first threaded hole 11d, and then drill a broken bolt.

Since the axial shielding portion 132 is located on a side of the positioning portion 110 facing away from the broken bolt, the axial shielding portion 132 can shield the positioning portion 110 from the first direction. Therefore, when the broken bolt is drilled by inserting the electric drill into the guide sleeve 120, the metal debris generated during the drilling process can be shielded by the axial shielding portion 132 from the first direction, so that the axial shielding portion 132 can prevent the splashed metal debris from passing over the radial shielding portion 131 (the first direction) and entering the arc-shaped groove 111a, and further prevent the metal debris from entering the inner cavity 11 d.

Referring to fig. 8, in an embodiment, the guiding device 100 further includes an adjusting bushing 140 for inserting into the guiding sleeve 120 and fitting with the guiding sleeve 120.

Specifically, since the adjustment bushing 140 is inserted into the inside of the guide sleeve 120 and is fitted into the guide sleeve 120, the drill bit of the electric drill can pass through the adjustment bushing 140 and enter the first threaded hole 11 d. By providing the adjustment bushing 140 with different inner diameters, the guide device 100 can be applied to electric drill bits with different outer diameters, thereby facilitating flexible matching of the guide device 100 with electric drill bits with different outer diameters.

As shown in fig. 8, the outer wall of the adjustment bushing 140 has a flange 141 protruding outward in a radial direction, and the flange 141 is fixedly connected to the axial end of the guide sleeve 120 by a bolt, so that the adjustment bushing 140 can be prevented from being rotated freely when a power drill drills a broken bolt after being inserted into the inner hole of the adjustment bushing 140.

In yet another embodiment, as shown in fig. 9, the outer edge of the positioning portion 110 is substantially in the shape of a regular hexagon, matching the outer edge of the main body portion 11 a. The positioning part 110 has an inner edge 111 having a circular shape. Accordingly, the radial barrier 131 is circular as a whole. The first direction is the axial direction of the circle. The number of the connecting holes 102 is five, and the five connecting holes 102 correspond to the five second threaded holes one to one.

Still another embodiment of this application provides a disconnected bolt remove device. The broken bolt removing device includes any one of the guide device 100, the punching tool, and the removing tool.

The piercing tool may be, but is not limited to, an electric drill, and may also be, for example, a punch. The removal tool is, for example, but not limited to, a reverse-threaded tap, and tools having reverse threads are all possible, but not listed here.

The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. A guide for use in removing a broken bolt from a first threaded bore in a body portion, the guide comprising:

2. The guide device as claimed in claim 1, wherein the positioning portion is provided with a positioning hole, and the guide sleeve is located in the positioning hole and is fitted with the positioning hole.

3. The guide device as claimed in claim 2, wherein the inner wall of the positioning hole is provided with an internal thread, the outer wall of the guide sleeve is provided with an external thread, and the guide sleeve and the positioning hole are matched through the external thread and the internal thread.

4. The guide device of claim 2, wherein the positioning portion is provided with a connecting hole, and the connecting hole is used for corresponding to the second threaded hole of the main body portion;

5. The guide device of claim 4, wherein the inner diameter of the positioning hole is larger than the inner diameter of the connecting hole.

6. The guide device of claim 4,

the number of the connecting holes is two, and the two connecting holes are respectively positioned on different sides of the positioning hole; or

The number of the connecting holes is more than three.

7. The guide device of claim 1,

the positioning part is provided with an arc-shaped or circular inner edge;

8. The guide device of claim 7, further comprising: an axial shielding portion; one end of the radial shielding part is fixedly connected with the positioning part, and the other end of the radial shielding part is fixedly connected with the axial shielding part; and the axial shielding part exceeds the radial shielding part along a third direction, wherein the third direction is outward along the radial direction of the circular arc or the circle.

9. The guide device of claim 1, further comprising an adjustment bushing for insertion into and mating with the interior of the guide sleeve.

10. A broken bolt extraction device comprising a guide as claimed in any one of claims 1 to 9, a punch tool and an extraction tool.