CN110744496A - Broken bolt taking-out device and broken bolt taking-out method - Google Patents
Broken bolt taking-out device and broken bolt taking-out method Download PDFInfo
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- CN110744496A CN110744496A CN201911046590.0A CN201911046590A CN110744496A CN 110744496 A CN110744496 A CN 110744496A CN 201911046590 A CN201911046590 A CN 201911046590A CN 110744496 A CN110744496 A CN 110744496A
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- 238000000034 method Methods 0.000 title claims abstract description 22
- 238000000605 extraction Methods 0.000 claims description 10
- 238000005553 drilling Methods 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims description 2
- 210000001503 joint Anatomy 0.000 abstract description 3
- 238000004140 cleaning Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000010079 rubber tapping Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
- B25B27/14—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for assembling objects other than by press fit or detaching same
- B25B27/18—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for assembling objects other than by press fit or detaching same withdrawing broken threaded parts or twist drills
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Hand Tools For Fitting Together And Separating, Or Other Hand Tools (AREA)
Abstract
The invention discloses a broken bolt taking-out device, which comprises: the take-out shaft is used for being inserted into a bottom hole pre-drilled on the broken bolt and is in interference fit with the bottom hole; the extension bar is connected with the taking-out shaft and is used for being inserted into the threaded hole where the broken bolt is located so that the taking-out shaft can be knocked into the bottom hole under the action of external force, and the extension bar has a preset length; the rotating arm is arranged at one end of the extension bar, which is far away from the take-out shaft, and is used for conveniently applying rotating torque to the extension bar. This fracture bolt remove device can make and take out axle and fracture bolt after fixed completely, exerts the torque of unscrewing to the fracture bolt again, and the fixed state of taking out axle and fracture bolt judges easily (when exerting the torque of gyration through the butt joint stock and can twist the fracture bolt, explains and takes out axle and fracture bolt fixed), conveniently holds the fracture bolt and takes out the dynamics, is difficult to make the extension bar fracture, can take out the fracture bolt fast effectively. The invention also discloses a broken bolt taking-out method using the broken bolt taking-out device.
Description
Technical Field
The invention relates to the technical field of mechanical maintenance equipment, in particular to a broken bolt taking-out device. In addition, the invention also relates to a broken bolt taking-out method using the broken bolt taking-out device.
Background
As an important standard for joining two or more components, bolts have found wide application in the field of machine manufacturing.
However, during long-term use, fatigue fracture is likely to occur due to the bolt being subjected to alternating loads for a long time, and with a long bolt having one end screwed into a component, once the bolt is fractured in the component, it is difficult to remove the fractured portion of the bolt in the component.
In the prior art, a bottom hole is usually drilled for a broken bolt through a self-made lengthening drill, and then the broken bolt is taken out in a reverse-threading mode by utilizing a screw tap. It can be seen that in this way, the tap is rotated first to tap the bottom hole, and after the tap taps the bottom hole, the tap is completely fixed to the broken bolt, and when the tap is screwed on, the broken bolt is finally unscrewed from the threaded hole in which the broken bolt is located. Obviously, this kind of mode of taking out fracture bolt is difficult to judge whether the tapping of screw tap is accomplished, when the screw tap stuck point, can't confirm whether the screw tap is fixed completely with the fracture bolt, consequently, can't hold the dynamics of screw tap, at this moment, in case the dynamics holds poorly, can lead to the screw tap fracture in the bottom outlet for the bolt of breaking and the taking out of fracture screw tap are more difficult.
Therefore, how to provide a device for taking out a broken bolt with convenient strength control is a problem to be solved urgently by those skilled in the art.
Disclosure of Invention
In view of this, the present invention provides a broken bolt removing apparatus, which is convenient to grasp the rotation torque applied to the broken bolt, and avoids the broken bolt from breaking in the threaded hole where the broken bolt is located during the use process.
Another object of the present invention is to provide a broken bolt taking out method using the above broken bolt taking out apparatus, which can take out a broken bolt quickly and efficiently.
In order to achieve the above purpose, the invention provides the following technical scheme:
a broken bolt extraction device comprising:
the taking-out shaft is used for being inserted into a pre-drilled bottom hole in the broken bolt and is in interference fit with the bottom hole;
the extension bar is connected with the taking-out shaft and used for being inserted into the threaded hole where the broken bolt is located so that the taking-out shaft can be knocked into the bottom hole under the action of external force, and the extension bar has a preset length;
the rotating arm is arranged at one end, far away from the taking-out shaft, of the extension bar and is used for conveniently applying rotating torque to the extension bar.
Preferably, an external thread is arranged on the periphery of one end of the take-out shaft, and an internal thread hole used for being matched and connected with the external thread is arranged at one end of the extension bar facing the take-out shaft.
Preferably, one end of the extension bar facing the rotating arm is provided with a through hole which radially penetrates through the extension bar, and the rotating arm is arranged in the through hole in a penetrating manner.
Preferably, one end of the rotation arm is provided with a stopper for preventing the rotation arm from being separated from the through hole.
Preferably, the taking-out shaft is a stepped shaft, the stepped shaft comprises at least two stepped shaft sections, and the shaft diameters of the stepped shaft sections are sequentially increased according to preset difference values from the free end of the stepped shaft to the end, close to the extension rod, of the stepped shaft.
Preferably, the length of each stepped shaft section is equal.
A broken bolt removing method using any one of the broken bolt removing apparatuses described above, comprising:
pre-drilling a bottom hole on the broken bolt;
inserting the extension bar of the broken bolt taking-out device into the threaded hole where the broken bolt is located;
applying external force to one end, far away from a taking-out shaft of the broken bolt taking-out device, of the extension bar by using an auxiliary tool so as to knock the taking-out shaft into the bottom hole and enable the taking-out shaft to be in interference fit with the bottom hole;
by applying external force to the rotating arm of the broken bolt taking-out device, the extension bar drives the taking-out shaft to rotate, so that the taking-out shaft drives the broken bolt to be screwed out.
When the broken bolt taking-out device is used, the broken bolt is fixed by the taking-out shaft in interference fit with the bottom hole pre-drilled in the broken bolt, and then the rotating torque is applied to the long rod through the rotating arm, so that the long rod drives the taking-out shaft to rotate, and the taking-out shaft drives the broken bolt to unscrew.
Compare in prior art and adopt the screw tap to take out the fracture bolt through the mode of anti-silk, this fracture bolt remove device can make at first to take out axle and fracture bolt complete fixation back, exert the torque of unscrewing to the fracture bolt again, the fixed state of taking out axle and fracture bolt judges easily (when applying the torque of rotation and can twist the fracture bolt through the butt joint stock, the explanation is taken out axle and is fixed with the fracture bolt), consequently, conveniently hold fracture bolt and take out the dynamics, be difficult to make extension bar fracture, can take out the fracture bolt fast effectively. In addition, compared with a screw tap, the broken bolt taking-out device is low in cost and convenient to operate. Moreover, the diameter of the extracting shaft and the preset length of the extension rod can be processed according to actual conditions, and the selection range of the model and the diameter of the screw tap is small, so that the applicability of the extracting device for the broken bolt is high.
According to the broken bolt taking-out method provided by the invention, the broken bolt can be taken out quickly and effectively by using the broken bolt taking-out device.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is an assembled schematic view of a broken bolt extraction apparatus according to an embodiment of the present invention;
FIG. 2 is a schematic structural view of the extension bar of FIG. 1;
FIG. 3 is a schematic view of the construction of the take-out shaft of FIG. 1;
fig. 4 is a schematic view of the structure of the rotating arm in fig. 1;
fig. 5 is a flowchart of a broken bolt removing method according to an embodiment of the present invention.
The reference numerals in fig. 1 to 4 are as follows:
1 is a take-out shaft, 11 is an external thread, 12 is a stepped shaft section, 13 is a connecting shaft section, 2 is an extension bar, 21 is an internal thread hole, 22 is a through hole, 3 is a rotating arm, and 31 is a stop part.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The core of the invention is to provide a broken bolt taking-out device, which is convenient to grasp and apply a rotating moment to a broken bolt, and avoids the broken bolt from breaking in a threaded hole where the broken bolt is located in the using process. Another core of the present invention is to provide a broken bolt taking out method using the broken bolt taking out device, which can quickly and effectively take out a broken bolt.
Referring to fig. 1 to 4, fig. 1 is an assembly view of a broken bolt removing apparatus according to an embodiment of the present invention; FIG. 2 is a schematic structural view of the extension bar of FIG. 1; FIG. 3 is a schematic view of the construction of the take-out shaft of FIG. 1; fig. 4 is a schematic view showing the structure of the rotating arm of fig. 1.
The invention provides a broken bolt taking-out device which comprises a taking-out shaft 1, an extension bar 2 and a rotating arm 3.
Specifically, the taking-out shaft 1 is used for being inserted into a bottom hole drilled in advance on the broken bolt, and the taking-out shaft 1 is in interference fit with the bottom hole after being inserted into the bottom hole so as to fix the taking-out shaft 1 and the broken bolt.
That is, the diameter size of the take-out shaft 1 is related to the hole size of the bottom hole previously drilled in the broken bolt to ensure the interference fit of the take-out shaft 1 with the bottom hole.
The specific material of the take-out shaft 1 is not limited in the present invention, and preferably, the take-out shaft 1 is machined from 45 round steel.
The taking-out shaft 1 is connected with one end of the extension bar 2, and the extension bar 2 is used for being inserted into a threaded hole where a broken bolt is located, so that the taking-out shaft 1 is knocked into a bottom hole under the action of external force, and the taking-out shaft 1 is fixed with the broken bolt.
It will be appreciated that the extension bar 2 has a predetermined length so as to allow the extraction shaft 1 to be inserted into the bottom hole. The specific value of the preset length of long extension bar 2 is not limited, and those skilled in the art can determine the actual fracture depth of the broken bolt, so as to facilitate the application of the external knocking force to long extension bar 2 and the application of the rotation moment to swivel arm 3, and preferably, the depth of long extension bar 2 is greater than the actual fracture depth of the broken bolt.
Of course, in order to guarantee that extension bar 2 can stretch into the threaded hole at fracture bolt place, the diameter of extension bar 2 needs to be less than the aperture of fracture bolt place screw hole, preferably, the aperture of the diameter ratio fracture bolt place screw hole of extension bar 2 is little 5mm to leave certain clearance in order to make between extension bar 2 and the fracture bolt place screw hole, allow extension bar 2 to have certain activity space.
The specific material of the long butt-joint rod 2 is not limited, and preferably, the long butt-joint rod 2 is machined from 45 round steel.
Considering a specific processing manner of the extension bar 2, preferably, the extension bar 2 is turned by a lathe to secure its diameter; meanwhile, the preset length of the extension bar 2 is ensured by turning the end face of the lathe.
In addition, the specific connection mode of the long extension bar 2 and the taking-out shaft 1 is not limited, and the long extension bar 2 and the taking-out shaft 1 can be fixed by welding or can be fixed by a detachable connection mode, for example, the long extension bar 2 is in threaded connection with the taking-out shaft 1; of course, the extension bar 2 and the extraction shaft 1 may be formed integrally.
The tumbler 3 is located the other end of extension bar 2 for conveniently applying rotary moment to extension bar 2, so that extension bar 2 drives and takes out axle 1 and rotate, thereby make the fracture bolt from its threaded hole in screw-out.
The present invention is not limited to a specific shape and structure of the swivel arm 3, and for example, the swivel arm 3 may be a cylindrical body as long as a rotation torque is conveniently applied to the long rod 2.
Similarly, the specific arrangement mode of the rotating arm 3 is not limited in the invention, and the rotating arm 3 can be fixedly arranged on the extension bar 2 or detachably connected with the extension bar 2.
In conclusion, when the broken bolt taking-out device provided by the invention is used, the broken bolt is fixed by the taking-out shaft 1 through interference fit between the taking-out shaft 1 and a bottom hole pre-drilled in the broken bolt, and then the rotating torque is applied to the long rod 2 through the rotating arm 3, so that the long rod 2 drives the taking-out shaft 1 to rotate, and the taking-out shaft 1 drives the broken bolt to rotate out.
Compare in prior art and adopt the screw tap to take out the fracture bolt through the mode of anti-silk, this fracture bolt remove device can make at first to take out axle 1 and the complete fixation back of fracture bolt, exert the torque of unscrewing to the fracture bolt again, take out axle 1 and the fixed state of fracture bolt judge easily (when applying the torque of gyration through butt joint stock 2 and can twist the fracture bolt, the explanation is taken out axle 1 and is fixed with the fracture bolt), consequently, conveniently hold fracture bolt and take out the dynamics, be difficult to make extension bar 2 fracture, can take out the fracture bolt fast effectively. In addition, compared with a screw tap, the broken bolt taking-out device is low in cost and convenient to operate. Moreover, the diameter of the extracting shaft 1 and the preset length of the extension bar 2 can be processed according to actual conditions, and the selection range of the model and the diameter of the screw tap is small, so that the applicability of the broken bolt extracting device is strong.
In consideration of the specific connection manner of the extension bar 2 and the take-out shaft 1, on the basis of the above-described embodiment, the outer peripheral portion of one end of the take-out shaft 1 is provided with the external thread 11, and the end of the extension bar 2 facing the take-out shaft 1 is provided with the internal thread hole 21 for fitting connection with the external thread 11.
That is, in the present embodiment, the extension bar 2 is screwed with the take-out shaft 1, and obviously, this connection mode facilitates the replacement of different take-out shafts 1 or extension bars 2, so as to improve the universality of the take-out shafts 1 and the extension bars 2.
In consideration of the manner of processing the internal threaded hole 21, the internal threaded hole 21 is preferably formed by drilling with a drill attached to a lathe tailstock and tapping with a tap attached to the lathe tailstock.
Considering the concrete connection manner of the rotating arm 3 and the extension bar 2, on the basis of the above-mentioned embodiment, the end of the extension bar 2 facing the rotating arm 3 is provided with a through hole 22 radially penetrating the extension bar 2, and the rotating arm 3 is inserted into the through hole 22.
That is, the present embodiment achieves the connection of the rotation arm 3 with the extension bar 2 by inserting the rotation arm 3 into the through-hole 22. The rotating arm 3 and the through hole 22 can be in interference fit so as to realize the fixed connection of the rotating arm 3 and the through hole 22; the swivel arm 3 and the through hole 22 may also be clearance fitted to facilitate the removal of the swivel arm 3 from the extension bar 2 when not in use.
Preferably, the maximum radial dimension of the swivel arm 3 is smaller than the bore diameter of the through hole 22 in order to facilitate the separation of the swivel arm 3 from the extension rod 2 in the non-use state.
It should be noted that the length of the rotatable arm 3 can be selected according to actual needs.
In view of avoiding the other end of the rotation arm 3 from falling out of the through hole 22 when an external force is applied to one end of the rotation arm 3, on the basis of the above-described embodiment, one end of the rotation arm 3 is provided with the stopper 31 for preventing the rotation arm 3 from falling out of the through hole 22.
That is, the present embodiment prevents the non-force-applying end of the swivel arm 3 from being disengaged from the through hole 22 by providing the stopper 31.
The specific structure and shape of the stopping portion 31 are not limited in this embodiment, as long as the maximum size of the stopping portion 31 is larger than the aperture of the through hole 22, so that the stopping portion 31 cannot pass through the through hole 22.
Preferably, the stop 31 forms a T-shaped swivel arm 3 with the main structure of the swivel arm 3. When the mounting is carried out, one end of the rotating arm 3 far away from the stopping part 31 is inserted into the through hole 22.
On the basis of any one of the above embodiments, the taking-out shaft 1 is a stepped shaft, the stepped shaft includes at least two stepped shaft sections 12, and the shaft diameters of the stepped shaft sections 12 are sequentially increased by a preset difference from the free end of the stepped shaft to the end of the stepped shaft close to the extension bar 2.
That is to say, the shaft diameter of the stepped shaft section 12 with the stepped shaft farthest from the extension rod 2 is the smallest, the shaft diameter between two adjacent stepped shaft sections 12 has a preset difference, the specific value of the preset difference is not limited in this embodiment, and those skilled in the art can determine the preset difference according to actual needs, for example, the preset difference of the shaft diameter between two adjacent stepped shaft sections 12 is 0.05 mm.
It should be noted that the stepped shaft section 12 closest to the free end of the stepped shaft (i.e., the stepped shaft section 12 farthest from the extension bar 2) is the working stepped shaft section 12, and the remaining stepped shaft sections 12 are the standby stepped shaft sections 12. When the stepped shaft is knocked into the bottom hole, the stepped shaft section 12 closest to the free end of the stepped shaft is matched with the bottom hole, when the stepped shaft section 12 closest to the free end of the stepped shaft cannot be in interference fit with the bottom hole, namely, when the stepped shaft section 12 closest to the free end of the stepped shaft cannot be fixed with a broken bolt, the stepped shaft is taken out, the stepped shaft section 12 closest to the free end of the stepped shaft can be cut off in a flame cutting mode on site, and the next stepped shaft section 12 adjacent to the stepped shaft section can be the stepped shaft section 12 closest to the free end of the stepped shaft to participate in work so as to be matched with the bottom hole. The process is circulated until the taking-out shaft 1 can be fixed with the broken bolt.
That is, all the spare stepped shaft sections 12 except the stepped shaft section 12 closest to the free end of the stepped shaft are acted on one by one as needed to make the take-out shaft 1 more firmly fixed with the extension bar 2, preventing the take-out shaft 1 from being insufficiently fastened with the broken bolt to cause the broken bolt not to be taken out as a whole. In addition, the capacity of adapting the take-out shaft 1 to different drill hole sizes is also improved by providing more than two stepped shaft sections 12.
The present embodiment does not limit the total number of the stepped shaft segments 12, and preferably, the number of the stepped shaft segments 12 is four.
Preferably, a connecting shaft section 13 is provided between the external thread 11 of one end of the take-out shaft 1 and the stepped shaft section 12 closest to the extension rod 2.
Further, the shaft diameter of the connecting shaft section 13 is preferably equal to the outer diameter of the external thread 11.
In view of the ease of insertion of the stepped shaft into the bottom hole, it is preferred that the end of the stepped shaft section 12 closest to the free end of the stepped shaft is chamfered.
On the basis of the above-described embodiment, the length of each stepped shaft section 12 is equal.
Fig. 5 is a flowchart illustrating a broken bolt removing method according to an embodiment of the present invention.
In addition to the broken bolt removing apparatus described above, the present invention also provides a broken bolt removing method using any one of the broken bolt removing apparatuses described above, the broken bolt removing method including the steps of:
s1: a pilot hole is pre-drilled in the broken bolt.
Preferably, a drill bit with a second preset length is adopted, a bottom hole is drilled on the broken bolt by using a magnetic drill, the depth of the bottom hole is preferably not more than one fourth of the length of the broken bolt, and the hole diameter of the bottom hole can be determined according to actual conditions, namely, a drill bit with a proper size is selected.
Further, before the bottom hole is drilled in the broken bolt in advance, the method also comprises the step of cleaning impurities near the broken bolt. For example, the cleaning may be performed by a cleaning method such as air blowing or gluing.
S2: and inserting the extension bar of the broken bolt taking-out device into the threaded hole where the broken bolt is located.
S3: and applying external force to one end, far away from the taking-out shaft of the broken bolt taking-out device, of the extension bar by using an auxiliary tool so as to knock the taking-out shaft into a bottom hole drilled on the broken bolt in advance, so that the taking-out shaft is in interference fit with the bottom hole.
It should be noted that the auxiliary tool in this embodiment is not particularly limited as long as the long rod can be knocked, and the auxiliary tool may be a copper rod, for example.
It should be further explained that, in the knocking process, whether the taking-out shaft can drive the broken bolt to rotate or not can be judged by applying a rotating moment to the long connecting rod, and when the broken bolt can rotate, the taking-out shaft and the broken bolt are explained to realize the fixed connection of interference fit.
S4: by applying external force to the rotating arm of the broken bolt taking-out device, the extension bar drives the taking-out shaft to rotate, so that the taking-out shaft drives the broken bolt to unscrew.
That is, the external force is applied to the rotating arm to apply the rotating torque to the long connecting rod, so that the long connecting rod drives the taking-out shaft to rotate, the taking-out shaft drives the broken bolt to rotate, and the broken bolt is screwed out from the threaded hole in which the broken bolt is located.
It can be seen that, according to the method for taking out the broken bolt, the take-out shaft and the broken bolt are fixed firstly, and then the long connecting rod is applied with the rotation torque.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The broken bolt removing device and the broken bolt removing method according to the present invention are described in detail above. The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
Claims (7)
1. A broken bolt extraction device, comprising:
the extraction shaft (1) is used for being inserted into a pre-drilled bottom hole on a broken bolt and is in interference fit with the bottom hole;
the extension bar (2) is connected with the taking-out shaft (1) and used for being inserted into the threaded hole where the broken bolt is located so that the taking-out shaft (1) is knocked into the bottom hole under the action of external force, and the extension bar (2) has a preset length;
the rotating arm (3) is arranged at one end of the extension bar (2) far away from the take-out shaft (1) and is used for conveniently applying a rotating moment to the extension bar (2).
2. The broken bolt removing device according to claim 1, wherein an external thread (11) is provided on an outer peripheral portion of one end of the removing shaft (1), and an internal thread hole (21) for fitting connection with the external thread (11) is provided on an end of the extension bar (2) facing the removing shaft (1).
3. The broken bolt extracting apparatus according to claim 1, wherein the end of the extension bar (2) facing the rotation arm (3) is provided with a through hole (22) radially penetrating the extension bar (2), and the rotation arm (3) is inserted into the through hole (22).
4. The broken bolt extraction apparatus according to claim 3, wherein one end of the rotatable arm (3) is provided with a stopper portion (31) for preventing the rotatable arm (3) from coming out of the through hole (22).
5. The broken bolt extraction device according to any one of claims 1-4, wherein the extraction shaft (1) is a stepped shaft comprising at least two stepped shaft sections (12), the shaft diameter of each stepped shaft section (12) increasing in sequence by a predetermined difference from the free end of the stepped shaft to the end of the stepped shaft adjacent to the extension bar (2).
6. The broken bolt extraction device according to claim 5, wherein the lengths of the respective stepped shaft sections (12) are equal.
7. A broken bolt removing method using the broken bolt removing device according to any one of claims 1 to 6, comprising:
pre-drilling a bottom hole on the broken bolt;
inserting the extension bar of the broken bolt taking-out device into the threaded hole where the broken bolt is located;
applying external force to one end, far away from a taking-out shaft of the broken bolt taking-out device, of the extension bar by using an auxiliary tool so as to knock the taking-out shaft into the bottom hole and enable the taking-out shaft to be in interference fit with the bottom hole;
by applying external force to the rotating arm of the broken bolt taking-out device, the extension bar drives the taking-out shaft to rotate, so that the taking-out shaft drives the broken bolt to be screwed out.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911046590.0A CN110744496B (en) | 2019-10-30 | 2019-10-30 | Broken bolt taking-out device and broken bolt taking-out method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911046590.0A CN110744496B (en) | 2019-10-30 | 2019-10-30 | Broken bolt taking-out device and broken bolt taking-out method |
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| CN110744496A true CN110744496A (en) | 2020-02-04 |
| CN110744496B CN110744496B (en) | 2022-06-07 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2626186A (en) * | 2023-01-13 | 2024-07-17 | The Blockley Tool Company Ltd | Kit and method of removing a fastener from a substrate |
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| DE29705346U1 (en) * | 1997-03-25 | 1997-05-15 | Jablonski, Zbigniew, 50859 Köln | Conical triangular clamp driver for removing defective pre-drilled screws or threaded bolts |
| CN201364891Y (en) * | 2009-01-23 | 2009-12-16 | 中芯国际集成电路制造(上海)有限公司 | Position calibration tool |
| CN201565873U (en) * | 2009-06-23 | 2010-09-01 | 彩虹显示器件股份有限公司 | Socket wrench |
| CN201970246U (en) * | 2011-03-18 | 2011-09-14 | 西安飞机工业（集团）有限责任公司 | Movable wrench |
| CN202097696U (en) * | 2011-06-21 | 2012-01-04 | 黄鹏 | Labor-saving screwdriver |
| CN203385343U (en) * | 2013-08-26 | 2014-01-08 | 中国重汽集团济南动力有限公司 | Vehicle frame hole verification plug gauge |
| CN105835002A (en) * | 2016-04-29 | 2016-08-10 | 湘电风能有限公司 | Fractured bolt withdrawing device |
| CN205928496U (en) * | 2016-08-16 | 2017-02-08 | 大唐巴彦淖尔风力发电有限责任公司 | Combined broken wire removal device |
| CN207824800U (en) * | 2018-01-25 | 2018-09-07 | 陈浩泳 | Corrupted bolt extractor |
| CN208882744U (en) * | 2018-09-28 | 2019-05-21 | 重庆科奥风机制造有限公司 | A kind of impeller annular trimming device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2626186A (en) * | 2023-01-13 | 2024-07-17 | The Blockley Tool Company Ltd | Kit and method of removing a fastener from a substrate |
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| CN110744496B (en) | 2022-06-07 |
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