CN216127168U - Blind hole bush extracting tool - Google Patents
Blind hole bush extracting tool Download PDFInfo
- Publication number
- CN216127168U CN216127168U CN202120824733.2U CN202120824733U CN216127168U CN 216127168 U CN216127168 U CN 216127168U CN 202120824733 U CN202120824733 U CN 202120824733U CN 216127168 U CN216127168 U CN 216127168U
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- pull rod
- rotation stopping
- blind hole
- arc
- cylinder
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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 that the cylinder body and the lining are not damaged.
Description
Technical Field
The utility model relates to the technical field of blind hole bushing extracting tools, in particular to a blind hole bushing extracting tool.
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 repair, check 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.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a blind hole bushing pulling-out tool, which can be used for taking out a bushing without damaging a cylinder body and the bushing, and improves the economic benefit. In order to achieve the purpose, the utility model adopts the following technical scheme:
a blind hole bush extracting tool comprises a mounting plate, a pull rod assembly, a rotation stopping member 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 bush; the mounting plate is fixedly arranged, the mounting plate is provided with a first through hole corresponding to the blind hole, the pull rod assembly comprises a first pull rod and two second pull rods arranged at two sides of the first pull rod, one end of the first pull rod and one end of the second pull rod extend into the blind holes, two opposite 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-shaped walls, two sides of the extending end of the first pull rod respectively extend out of first limiting steps which respectively extend out of two first arc-shaped walls, the inner side wall of the second pull rod is a second arc-shaped wall matched with the first arc-shaped 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 piece is arranged at the extending ends of the first pull rod and the second pull rod and stops the first pull rod and the second pull rod from rotating mutually.
Furthermore, the rotation stopping piece is a rotation stopping sleeve, 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 pulling-out state.
Furthermore, the rotation stopping piece is a bolt, and the extending ends of the first pull rod and the second pull rod are fastened through the bolt.
Furthermore, the outer side wall of the second pull rod is a third arc-shaped wall, and the third arc-shaped wall and the second arc-shaped wall are coaxially arranged.
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, the extending end of the second pull rod is provided with a third limiting step, and the end face of the rotation stopping sleeve, which is close to the second limiting step, abuts against the third limiting step.
Further, end the rotary drum and include first drum, establish the first spacing ring in first drum one end and establish the shrouding at the first drum other end, the second ends the hole setting on the shrouding of changeing, the nut sets up and keeps away from first drum one side at the shrouding, during first spacing ring inserts the first through-hole on the mounting panel, be provided with the first groove that ends on the first drum, removable being provided with the first board that ends on the mounting panel, the first board that ends stretches out in the first groove that ends.
Furthermore, still be provided with a pad section of thick bamboo between ending rotary drum and the mounting panel, a pad section of thick bamboo one end is provided with the spacing ring of second, the other end of a pad section of thick bamboo is provided with heavy platform, the spacing ring of second of a pad section of thick bamboo inserts in the first through-hole on the mounting panel, a pad section of thick bamboo is close to the spacing ring one end of second and is provided with the second and ends the groove, first only the revolving plate stretches out in the second ends the groove, only first spacing ring on the rotary drum is established in sinking the platform, it is provided with the second and ends the revolving plate to end between rotary drum and the pad section of thick bamboo.
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.
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, then the first pull rod is rotated to enable the pull rod assembly to be in the extracting state, the second limiting step extends out of the end face, far away from one end of the blind hole inlet, of the bushing, and then the pull rod assembly drives the bushing to integrally move outwards and move out of the blind hole through the rotating nut. 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 utility model 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 a mounting plate 1, a pull rod assembly, a rotation stopping sleeve 2, and a driving assembly for driving the pull rod assembly to move to the outer side of a blind hole so as 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 a blind hole, the pull rod assembly comprises a first pull rod 5 and two second pull rods 6 arranged at 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 figures 4 and 6, two opposite 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 respectively extend out first limiting steps 9, the two first limiting steps 9 respectively extend out from the two first arc-shaped walls 8, 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 third arc-shaped wall 11 and the second arc-shaped wall 10 are coaxially arranged, the inner side of the extending end of the second pull rod 6 is provided with a limit groove 12 matched with the first limit step 9, and the outer side of the extending end of the second pull rod 6 extends with a second limit 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. Besides the mode of adopting the anti-rotation sleeve 2, bolts can be arranged at the extending ends of the first pull rod 5 and the second pull rod 6, and the first pull rod 5 and the second pull rod 6 can be fixed through the bolts.
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 limiting ring 21 disposed at one end of the first cylinder 20, and a first limiting plate 22 disposed at the other end of the first cylinder 20, the second rotation stopping hole 19 is disposed on the first limiting plate 22, the nut 16 is disposed on one side of the first limiting plate 22 away from the first cylinder 20, the first limiting ring 21 is inserted into the first through hole 4 of 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 cylinder 17 and the support cylinder 25 are provided with viewing notches 30 for viewing whether the liner 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, and aligning a first through hole 4 on the mounting plate 1 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 the 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 bushing 3 to move outward 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 for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the present invention, as it will be apparent to those skilled in the art that various modifications, combinations and variations can be made in the present invention. 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 (10)
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 piece and a driving assembly, wherein the driving assembly is used for driving the pull rod assembly to move towards the outer side of the blind hole so as to pull out the bushing;
the mounting plate is fixedly arranged, the mounting plate is provided with a first through hole corresponding to the blind hole, the pull rod assembly comprises a first pull rod and two second pull rods arranged at two sides of the first pull rod, one end of the first pull rod and one end of the second pull rod extend into the blind holes, two opposite 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-shaped walls, two sides of the extending end of the first pull rod respectively extend out of first limiting steps which respectively extend out of two first arc-shaped walls, the inner side wall of the second pull rod is a second arc-shaped wall matched with the first arc-shaped 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 piece is arranged at the extending ends of the first pull rod and the second pull rod and stops the first pull rod and the second pull rod from rotating mutually.
2. The blind hole bushing extracting tool according to claim 1, characterized in that: the rotation stopping piece is a rotation stopping sleeve, 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 cross section size of the pull rod assembly in the pulled-out state.
3. The blind hole bushing extracting tool according to claim 1, characterized in that: the rotation stopping piece is a bolt, and the extending ends of the first pull rod and the second pull rod are fastened through the bolt.
4. The blind hole bushing extracting tool according to claim 1, characterized in that: the outer side wall of the second pull rod is a third arc-shaped wall, and the third arc-shaped wall and the second arc-shaped wall are coaxially arranged.
5. 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.
6. The blind hole bushing extracting tool according to claim 2, 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.
7. The blind hole bushing extracting tool according to claim 5, characterized in that: the rotary drum 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 of the sealing plate away from the first cylinder, 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.
8. The blind hole bushing extracting tool according to claim 7, characterized in that: end still be provided with between rotary drum and the mounting panel and fill up a section of thick bamboo, fill up a section of thick bamboo one end and be provided with the spacing ring of second, the other end that fills up a section of thick bamboo is provided with heavy platform, the spacing ring of second that fills up a section of thick bamboo inserts in the first through-hole on the mounting panel, it is provided with the second near the spacing ring one end of second and ends the groove to fill up a section of thick bamboo, first only rotate the board and stretch out the second and end in the groove, it establishes in heavy platform to end the first spacing ring on the rotary drum, it ends the board to be provided with the second between rotary drum and the pad section of thick bamboo.
9. The blind hole bushing extracting tool according to claim 8, characterized in that: and an observation notch is arranged on the side wall of the stop rotating cylinder and/or the cushion cylinder.
10. The blind hole bushing extracting tool according to claim 1, characterized in that: the mounting plate is mounted on the engine cylinder block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120824733.2U CN216127168U (en) | 2021-04-21 | 2021-04-21 | Blind hole bush extracting tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120824733.2U CN216127168U (en) | 2021-04-21 | 2021-04-21 | Blind hole bush extracting tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216127168U true CN216127168U (en) | 2022-03-25 |
Family
ID=80765243
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120824733.2U Active CN216127168U (en) | 2021-04-21 | 2021-04-21 | Blind hole bush extracting tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216127168U (en) |
-
2021
- 2021-04-21 CN CN202120824733.2U patent/CN216127168U/en active Active
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