CN113146542B - Blind hole bushing pulling-out tool and bushing pulling-out method - Google Patents
Blind hole bushing pulling-out tool and bushing pulling-out method Download PDFInfo
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- CN113146542B CN113146542B CN202110431878.0A CN202110431878A CN113146542B CN 113146542 B CN113146542 B CN 113146542B CN 202110431878 A CN202110431878 A CN 202110431878A CN 113146542 B CN113146542 B CN 113146542B
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- pull rod
- rotation stopping
- blind hole
- bushing
- cylinder
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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
- B25B27/02—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for connecting objects by press fit or detaching same
- B25B27/023—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for connecting objects by press fit or detaching same using screws
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- Mechanical Engineering (AREA)
- Mutual Connection Of Rods And Tubes (AREA)
Abstract
A blind hole bush extracting tool comprises a mounting plate, a pull rod assembly, a rotation stopping sleeve and a driving assembly; the mounting plate is fixedly arranged, the pull rod assembly comprises a first pull rod and two second pull rods arranged on two sides of the first pull rod, one end of the first pull rod and one end of each second pull rod extend into the blind hole, the side wall of each first pull rod comprises two plane walls and two first arc-shaped walls, two first limiting steps extend outwards from the two first arc-shaped walls respectively, the inner side wall of each second pull rod is a second arc-shaped wall, a limiting groove is formed in the inner side of the extending end of each second pull rod, and a second limiting step extends out of the outer side of the extending end of each second pull rod; the rotation stopping sleeve is provided with an extending end of the second pull rod, is sleeved on the first pull rod and the second pull rod and enables the first pull rod and the second pull rod to stop rotating mutually. By adopting the scheme, the lining can be taken out under the condition of not damaging the cylinder body and the lining, and in addition, the invention also provides a related lining pulling-out method.
Description
Technical Field
The invention relates to the technical field of blind hole bushing pulling-out tools, in particular to a blind hole bushing pulling-out tool and a bushing pulling-out method.
Background
4 bushings are pressed on the engine cylinder body, and when the press fitting is unqualified, the press fitting bushings need to be taken out in order to perform repair inspection and press fitting again. Since the maximum pressing force of the bushing needs 6T, the prior art needs to be improved because the bushing is broken by a manual tool or a milling machine, the time for taking out the bushing is long, and the cylinder body is easy to damage and cause waste.
Disclosure of Invention
The invention aims to provide a blind hole bushing pulling-out tool and a bushing pulling-out method, which can be used for taking out a bushing without damaging a cylinder body and the bushing and improve the economic benefit. In order to achieve the purpose, the invention adopts the following technical scheme:
a blind hole bushing extracting tool comprises a mounting plate, a pull rod assembly, a rotation stopping sleeve and a driving assembly, wherein the driving assembly is used for driving the pull rod assembly to move towards the outer side of a blind hole so as to extract a bushing; the mounting plate is fixedly arranged, a first through hole is formed in the mounting plate corresponding to the blind hole, the pull rod assembly comprises a first pull rod and two second pull rods arranged on two sides of the first pull rod, one end of the first pull rod and one end of each second pull rod extend into the blind hole, two oppositely arranged side walls on the first pull rod are plane walls, two side walls, located between the two plane walls, of the first pull rod are first arc walls, first limiting steps extend out from two sides of the extending end of the first pull rod respectively, the two first limiting steps extend out from the two first arc walls respectively, the inner side wall of the second pull rod is a second arc wall matched with the first arc walls, the outer side wall of the second pull rod is a third arc wall, limiting grooves matched with the first limiting steps are formed in the inner side of the extending end of the second pull rod, and second limiting steps extend out from the outer side of the extending end of the second pull rod; when the two second pull rods are respectively arranged on the outer sides of the two plane walls of the first pull rod, the pull rod assembly is in an inserted state and can penetrate through the inner hole of the bushing, when the second arc-shaped walls of the two second pull rods are respectively attached to the two first arc-shaped walls of the first pull rod, the pull rod assembly is in a pulled-out state, and the second limiting step is in contact with the end face of one end, far away from the blind hole inlet, of the bushing in the pulling-out process; the rotation stopping sleeve is provided with an extending end of the second pull rod, a first rotation stopping hole is formed in the rotation stopping sleeve, the rotation stopping sleeve is arranged on the first pull rod and the second pull rod in a sleeved mode, and the size of the first rotation stopping hole is matched with the size of the cross section of the pull rod assembly in the pulled-out state.
Furthermore, the driving assembly comprises a nut and a rotation stopping cylinder, the extending end of the first pull rod extends out of the extending end of the second pull rod and forms a driving section which is used for being connected with the driving assembly, the driving section is provided with external threads and the plane wall, a second rotation stopping hole is formed in the rotation stopping cylinder, and the driving section penetrates through the second rotation stopping hole and is in threaded connection with the nut.
Furthermore, a third limiting step is arranged at the extending end of the second pull rod, and the end face, close to the second limiting step, of the rotation stopping sleeve abuts against the third limiting step.
Furthermore, the rotation stopping cylinder comprises a first cylinder, a first limiting ring arranged at one end of the first cylinder and a sealing plate arranged at the other end of the first cylinder, the second rotation stopping hole is formed in the sealing plate, the nut is arranged on one side, away from the first cylinder, of the sealing plate, the first limiting ring is inserted into a first through hole in the mounting plate, a first rotation stopping groove is formed in the first cylinder, a first rotation stopping plate is detachably arranged on the mounting plate, and the first rotation stopping plate extends out of the first rotation stopping groove.
Furthermore, a pad cylinder is further arranged between the rotating cylinder and the mounting plate, one end of the pad cylinder is provided with a second limiting ring, the other end of the pad cylinder is provided with a sinking platform, the second limiting ring of the pad cylinder is inserted into the first through hole in the mounting plate, one end of the pad cylinder, which is close to the second limiting ring, is provided with a second rotating stopping groove, the first rotating stopping plate extends out of the second rotating stopping groove, the first limiting ring on the rotating cylinder is arranged in the sinking platform, and a second rotating stopping plate is arranged between the rotating cylinder and the pad cylinder.
Furthermore, an observation notch is arranged on the side wall of the stop drum and/or the cushion drum.
Further, the mounting plate is mounted on the engine block.
A bushing pulling method adopting the blind hole bushing pulling tool comprises the following steps:
(1) Fixing the mounting plate at the outer side of the blind hole, wherein a first through hole on the mounting plate is aligned with the blind hole;
(2) Inserting the pull rod assembly in the inserted state into the blind hole, enabling the end part to penetrate through the bushing, then rotating the first pull rod to enable the pull rod assembly to be in the pulled-out state, and enabling the second limiting step to extend out of the end face of one end, far away from the inlet of the blind hole, of the bushing;
(3) Installing a rotation stopping sleeve, and relatively fixing the first pull rod and the second pull rod;
(4) Installing a rotation stopping cylinder, enabling the rotation stopping cylinder to stop rotating relative to the installation plate, and enabling the extending end of the first pull rod to penetrate through the second rotation stopping hole and be in threaded connection with the nut;
(5) And when the nut is rotated, the pull rod assembly drives the bushing to integrally move outwards and move out of the blind hole.
Adopt above-mentioned technical scheme, insert the draw bar assembly who is in the inserted state earlier in the blind hole and make the tip pass the bush, then rotatory first pull rod makes draw bar assembly be in the state of extracting, and the spacing step of second stretches out the terminal surface that the blind hole entry one end was kept away from to the bush this moment, then through swivel nut for draw bar assembly drives the whole outwards removal of bush and shifts out the blind hole. Therefore, the lining can be taken out in a mode of damaging the engine cylinder body or the lining without moving the engine cylinder to a machine tool, and the economic benefit is obviously improved.
Drawings
Fig. 1 is a perspective view of the present invention.
Fig. 2 is an exploded view of the present invention.
FIG. 3 is a schematic cross-sectional view of the present invention.
Fig. 4 is an enlarged schematic view of a portion a in fig. 1.
FIG. 5 is a schematic view of a tie rod assembly.
Fig. 6 is an enlarged schematic view of B in fig. 2.
Detailed Description
The invention is described below with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1 to 6, a blind hole bushing extracting tool includes an installation plate 1, a pull rod assembly, a rotation stopping sleeve 2, and a driving assembly for driving the pull rod assembly to move towards the outer side of a blind hole to extract a bushing 3. In the present invention, the blind hole bush 3 extraction in the engine block is exemplified, and the blind hole bush 3 extraction in other occasions can also be applied.
The mounting plate 1 is fixedly mounted on an engine cylinder body, the mounting plate 1 is provided with a first through hole 4 corresponding to the blind hole, the pull rod assembly comprises a first pull rod 5 and two second pull rods 6 arranged on two sides of the first pull rod 5, one end of the first pull rod 5 and one end of each second pull rod 6 extend into the blind hole, as shown in fig. 4 and 6, two oppositely-arranged side walls on the first pull rod 5 are plane walls 7, two side walls of the first pull rod 5 between the two plane walls 7 are first arc-shaped walls 8, two sides of the extending end of the first pull rod 5 extend out respectively to form first limiting steps 9, the two first limiting steps 9 extend out from the two first arc-shaped walls 8 respectively, the inner side wall of the second pull rod 6 is a second arc-shaped wall 10 matched with the first arc-shaped walls 8, the outer side wall of the second pull rod 6 is a third arc-shaped wall 11, the inner side of the extending end of the second pull rod 6 is provided with a groove 12 matched with the first limiting steps 9, and the outer side of the extending end of the second pull rod 6 extends out to form a second limiting step 13.
When the two second pull rods 6 are respectively arranged at the outer sides of the two plane walls 7 of the first pull rod 5, the pull rod assembly is in an inserted state and can penetrate through the inner hole of the bushing 3, when the second arc-shaped walls 10 of the two second pull rods 6 are respectively attached to the two first arc-shaped walls 8 of the first pull rod 5, the pull rod assembly is in an extracted state, and the second limiting step 13 is in contact with the end face of one end, far away from the blind hole inlet, of the bushing 3 in the extracting process.
The rotation stopping sleeve 2 is provided with an extending end of the second pull rod 6, a first rotation stopping hole 14 is formed in the rotation stopping sleeve 2, the rotation stopping sleeve 2 is sleeved on the first pull rod 5 and the second pull rod 6, the size of the first rotation stopping hole 14 is matched with the cross section size of the pull rod assembly in the pulled-out state and used for stopping rotation of the first pull rod 5 and the second pull rod 6 in the pulled-out state, a third limiting step 15 is arranged at the extending end of the second pull rod 6, and the end face, close to the second limiting step 13, of the rotation stopping sleeve 2 abuts against the third limiting step 15.
The driving assembly comprises a nut 16 and a rotation stopping cylinder 17, the extending end of the first pull rod 5 extends out of the extending end of the second pull rod 6 and forms a driving section 18 used for being connected with the driving assembly, the driving section 18 is provided with external threads and a plane wall 7, a second rotation stopping hole 19 is formed in the rotation stopping cylinder 17, and the driving section 18 penetrates through the second rotation stopping hole 19 and is in threaded connection with the nut 16.
Specifically, in the first embodiment, in the case that the rotation stopping cylinder 17 is directly disposed on the mounting plate 1, the rotation stopping cylinder 17 includes a first cylinder 20, a first limit ring 21 disposed at one end of the first cylinder 20, and a first limit sealing plate 22 disposed at the other end of the first cylinder 20, the second rotation stopping hole 19 is disposed on the first limit sealing plate 22, the nut 16 is disposed on one side of the first limit sealing plate 22 away from the first cylinder 20, the first limit ring 21 is inserted into the first through hole 4 on the mounting plate 1, the first rotation stopping groove 23 is disposed on the first cylinder 20, the first rotation stopping plate 24 is detachably disposed on the mounting plate 1, and the first rotation stopping plate 24 extends out of the first rotation stopping groove 23.
In the second embodiment, as shown in fig. 2, because the blind hole often has a certain depth, as a preferable scheme, a cushion cylinder 25 is further disposed between the rotation stopping cylinder 17 and the mounting plate 1, one end of the cushion cylinder 25 is provided with a second limit ring 26, the other end of the cushion cylinder 25 is provided with a sinking platform 27, the second limit ring 26 of the cushion cylinder 25 is inserted into the first through hole 4 on the mounting plate 1, one end of the cushion cylinder 25, which is close to the second limit ring 26, is provided with a second rotation stopping groove 28, the first rotation stopping plate 24 extends out of the second rotation stopping groove 28, the first limit ring 21 on the rotation stopping cylinder 17 is disposed in the sinking platform 27, and a second rotation stopping plate 29 is disposed between the rotation stopping cylinder 17 and the cushion cylinder 25. The side walls of the stop drum 17 and the cushion drum 25 are provided with observation notches 30 for observing whether the lining 3 has been removed from the blind hole
The method for pulling out the bushing 3 by adopting the blind hole bushing pulling-out tool comprises the following steps:
(1) Fixing the mounting plate 1 at the outer side of the blind hole, wherein the first through hole 4 on the mounting plate 1 is aligned with the blind hole;
(2) Inserting the pull rod assembly in an inserted state into the blind hole, enabling the end part to penetrate through the bushing 3, then rotating the first pull rod 5 to enable the pull rod assembly to be in a pulled-out state, and enabling the second limiting step 13 to extend out of the end face of one end, far away from the inlet of the blind hole, of the bushing 3;
(3) Installing a rotation stopping sleeve 2, and relatively fixing a first pull rod 5 and a second pull rod 6;
(4) Installing a rotation stopping cylinder 17, enabling the rotation stopping cylinder 17 to stop rotating relative to the installation plate 1, and enabling the extending end of the first pull rod 5 to penetrate through a second rotation stopping hole 19 and be in threaded connection with the nut 16;
(5) By rotating the nut 16, the pull rod assembly drives the bush 3 to move outwards and move out of the blind hole.
By adopting the technical scheme, the pull rod assembly in the inserting state is inserted into the blind hole, the end part of the pull rod assembly penetrates through the bushing 3, then the first pull rod 5 is rotated to enable the pull rod assembly to be in the pulling-out state, the second limiting step 13 extends out of the end face of one end, far away from the inlet of the blind hole, of the bushing 3, and then the pull rod assembly drives the bushing 3 to integrally move outwards and move out of the blind hole through the rotating nut 16. Therefore, the lining 3 can be taken out by destroying the engine cylinder block or the lining 3 without moving the engine cylinder to a machine tool, and the economic benefit is obviously improved.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications, combinations, and variations may be made by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.
Claims (8)
1. The utility model provides a frock is extracted to blind hole bush which characterized in that: the blind hole bushing pulling device comprises a mounting plate, a pull rod assembly, a rotation stopping sleeve and a driving assembly, wherein the driving assembly is used for driving the pull rod assembly to move towards the outer side of a blind hole so as to pull out the bushing;
the mounting plate is fixedly arranged, a first through hole is formed in the mounting plate corresponding to the blind hole, the pull rod assembly comprises a first pull rod and two second pull rods arranged on two sides of the first pull rod, one end of the first pull rod and one end of each second pull rod extend into the blind hole, two oppositely arranged side walls on the first pull rod are plane walls, two side walls of the first pull rod between the two plane walls are first arc walls, two sides of the extending end of the first pull rod respectively extend out of a first limiting step, the two first limiting steps respectively extend out of the two first arc walls, the inner side wall of the second pull rod is a second arc wall matched with the first arc walls, the outer side wall of the second pull rod is a third arc wall, a limiting groove matched with the first limiting step is formed in the inner side of the extending end of the second pull rod, and a second limiting step extends out of the outer side of the extending end of the second pull rod;
when the two second pull rods are respectively arranged at the outer sides of the two plane walls of the first pull rod, the pull rod assembly is in an inserted state and can penetrate through the inner hole of the bushing, when the second arc-shaped walls of the two second pull rods are respectively attached to the two first arc-shaped walls of the first pull rod, the pull rod assembly is in a pulled-out state, and the second limiting step is in contact with the end face of one end, far away from the blind hole inlet, of the bushing in the pulling-out process;
the rotation stopping sleeve is provided with an extending end of the second pull rod, a first rotation stopping hole is formed in the rotation stopping sleeve, the rotation stopping sleeve is arranged on the first pull rod and the second pull rod in a sleeved mode, and the size of the first rotation stopping hole is matched with the size of the cross section of the pull rod assembly in the pulled-out state.
2. The blind hole bushing extracting tool according to claim 1, characterized in that: the driving assembly comprises a nut and a rotation stopping cylinder, the extending end of the first pull rod extends out of the extending end of the second pull rod and forms a driving section which is used for being connected with the driving assembly, the driving section is provided with external threads and the plane wall, a second rotation stopping hole is formed in the rotation stopping cylinder, and the driving section penetrates through the second rotation stopping hole and is in threaded connection with the nut.
3. The blind hole bushing extracting tool according to claim 1, characterized in that: the extension end of the second pull rod is provided with a third limiting step, and the end face, close to the second limiting step, of the rotation stopping sleeve abuts against the third limiting step.
4. The blind hole bushing extracting tool according to claim 2, characterized in that: the rotation stopping cylinder comprises a first cylinder, a first limiting ring arranged at one end of the first cylinder and a sealing plate arranged at the other end of the first cylinder, wherein a second rotation stopping hole is formed in the sealing plate, a nut is arranged on one side, away from the first cylinder, of the sealing plate, the first limiting ring is inserted into a first through hole in the mounting plate, a first rotation stopping groove is formed in the first cylinder, a first rotation stopping plate is detachably arranged on the mounting plate, and the first rotation stopping plate extends out of the first rotation stopping groove.
5. The blind hole bushing extracting tool according to claim 4, characterized in that: the utility model discloses a rotary drum, including a rotary drum, a pad section of thick bamboo, pad section of thick bamboo one end and a pad section of thick bamboo, the other end of a pad section of thick bamboo is provided with sinks the platform, insert the first through-hole on the mounting panel in the second limit ring of a pad section of thick bamboo, the pad section of thick bamboo is close to second limit ring one end and is provided with the second and ends the groove of changeing, the first board that splines stretches out the second and ends in the groove of changeing, it establishes in sinking the platform to end the first limit ring on the rotary drum, it ends the board of changeing to end to be provided with the second between rotary drum and the pad section of thick bamboo.
6. The blind hole bushing extracting tool according to claim 5, characterized in that: and observation gaps are arranged on the side walls of the stopping cylinder and/or the cushion cylinder.
7. The blind hole bush extraction tool according to claim 1, characterized in that: the mounting plate is mounted on the engine cylinder block.
8. A bushing extraction method adopting the blind hole bushing extraction tool of claim 2 is characterized in that: the method comprises the following steps:
(1) Fixing the mounting plate at the outer side of the blind hole, wherein a first through hole on the mounting plate is aligned with the blind hole;
(2) Inserting the pull rod assembly in an inserted state into the blind hole, enabling the end part to penetrate through the bushing, then rotating the first pull rod to enable the pull rod assembly to be in a pulled-out state, and enabling the second limiting step to extend out of the end face of one end, far away from the inlet of the blind hole, of the bushing;
(3) Installing a rotation stopping sleeve, and relatively fixing the first pull rod and the second pull rod;
(4) Installing a rotation stopping cylinder, enabling the rotation stopping cylinder to stop rotating relative to the installation plate, and enabling the extending end of the first pull rod to penetrate through the second rotation stopping hole and be in threaded connection with the nut;
(5) And when the nut is rotated, the pull rod assembly drives the bushing to integrally move outwards and move out of the blind hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110431878.0A CN113146542B (en) | 2021-04-21 | 2021-04-21 | Blind hole bushing pulling-out tool and bushing pulling-out method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110431878.0A CN113146542B (en) | 2021-04-21 | 2021-04-21 | Blind hole bushing pulling-out tool and bushing pulling-out method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113146542A CN113146542A (en) | 2021-07-23 |
| CN113146542B true CN113146542B (en) | 2023-04-14 |
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ID=76869163
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110431878.0A Active CN113146542B (en) | 2021-04-21 | 2021-04-21 | Blind hole bushing pulling-out tool and bushing pulling-out method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113146542B (en) |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4624041A (en) * | 1985-10-21 | 1986-11-25 | Gathright Puller, Inc. | Sleeve bearing puller |
| JP2000135686A (en) * | 1998-10-30 | 2000-05-16 | Minoru Hasegawa | Bearing puller |
| CN102029588B (en) * | 2010-12-31 | 2013-08-14 | 中国航空动力机械研究所 | Disassembling device |
| CN204263073U (en) * | 2014-10-31 | 2015-04-15 | 中国第一汽车股份有限公司 | A kind of bushing dismounting instrument |
| CN205765945U (en) * | 2016-06-12 | 2016-12-07 | 浙江吉利罗佑发动机有限公司 | A kind of bearing disassembling device |
| CN206048078U (en) * | 2016-08-25 | 2017-03-29 | 成都飞机工业（集团）有限责任公司 | A kind of blind hole bushing pulling off device |
| CN108274431A (en) * | 2018-01-24 | 2018-07-13 | 北京安达维尔机械维修技术有限公司 | Provision for disengagement for aircraft air-conditioning system valve thin-wall bush |
-
2021
- 2021-04-21 CN CN202110431878.0A patent/CN113146542B/en active Active
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| Publication number | Publication date |
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| CN113146542A (en) | 2021-07-23 |
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