CN112975844A - Device and method for pulling out press-fitting bearing - Google Patents
Device and method for pulling out press-fitting bearing Download PDFInfo
- Publication number
- CN112975844A CN112975844A CN202110204631.5A CN202110204631A CN112975844A CN 112975844 A CN112975844 A CN 112975844A CN 202110204631 A CN202110204631 A CN 202110204631A CN 112975844 A CN112975844 A CN 112975844A
- Authority
- CN
- China
- Prior art keywords
- bearing
- pulling
- expansion sleeve
- rod
- pin
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- 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
- B25B27/06—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 inserting or withdrawing sleeves or bearing races
Abstract
The invention provides a device and a method for pulling out a press-fitting bearing; the pulling-out device comprises a tensioning mechanism and a pulling-back mechanism, wherein the tensioning mechanism is detachably connected with the pulling-back mechanism, and the tensioning mechanism and the pulling-back mechanism are positioned on the same straight line; the tensioning mechanism can be in clamping connection with the inner wall of the bearing through tensioning; the pulling-back mechanism is subjected to reverse acting force so as to pull out the bearing through the tensioning mechanism; the scheme provided by the invention improves the pulling-out speed of the press-fitting bearing, effectively saves reworking and maintenance time and reduces the cost.
Description
Technical Field
The invention belongs to the technical field of bearing pulling-out devices and methods, and particularly relates to a device and a method for pulling out a press-fitting bearing.
Background
In the existing mechanical industry, a lot of motion, transmission all involve bearing interference fit pressure equipment to contact with the bottom hole after a lot of bearings pressure equipment, when changing the bearing in rework, maintenance process, generally adopt violence to disassemble and destroy the mode that takes out after the bearing, cause the damage of the pressure equipment hole of bearing and peripheral part like this easily, and disassemble like this and waste man-hour, can damage spare part, equipment, cause the serious waste of manpower and materials.
Based on the technical problems existing in the process of repairing the bearing, no relevant solution is provided; there is therefore a pressing need to find effective solutions to the above problems.
Disclosure of Invention
The invention aims to provide a device and a method for pulling out a press-fitting bearing, aiming at solving the problems that press-fitting holes and peripheral parts of the bearing are easy to damage and manpower and material resources are seriously wasted in the existing press-fitting reworking and maintenance processes.
The invention provides a press-mounting bearing pulling-out device which comprises a tensioning mechanism and a pulling-back mechanism, wherein the tensioning mechanism is detachably connected with the pulling-back mechanism, and the tensioning mechanism and the pulling-back mechanism are positioned on the same straight line; the tensioning mechanism can be in clamping connection with the inner wall of the bearing through tensioning; the pulling-back mechanism is subjected to reverse acting force so as to pull out the bearing through the tensioning mechanism.
Furthermore, the tensioning mechanism comprises a mandril, an expansion sleeve and a locking nut; the expansion sleeve is sleeved at the front end of the ejector rod; the expansion sleeve is meshed with the inner wall of the bearing through expansion, and the expansion sleeve and the inner wall of the bearing are connected in a clamping manner by the tension force of the expansion sleeve; the locking nut is sleeved at the rear end of the ejector rod and rotates to expand the expansion sleeve; the locking nut locks the expansion sleeve while rotating the expansion sleeve.
Furthermore, the expansion sleeve is a six-claw expansion sleeve; six expansion claws of the six-claw expansion sleeve can be meshed with six tooth grooves on the inner wall of the bearing so as to be clamped together.
Furthermore, the outer diameters of the expansion sleeve and the ejector rod are respectively smaller than the inner diameter of the bearing by 0.5mm-1.5 mm.
Furthermore, the tensioning mechanism also comprises a jacket, and the jacket is sleeved on the tensioning sleeve; the locking nut is sleeved on the clamping sleeve and can rotate on the clamping sleeve; the locking nut rotates to enable the clamping sleeve to extrude the expansion sleeve to expand and simultaneously lock the expansion sleeve.
Furthermore, the pull-back mechanism comprises a pin pulling balancing weight, a pin pulling rod and a check ring; the retainer ring is sleeved and fixed at the rear end of the pin pulling rod; the pin pulling balancing weight is sleeved on the pin pulling rod and can move back and forth on the pin pulling rod; the inner diameter of the central hole of the pin pulling balancing weight is smaller than the outer diameter of the retainer ring; the front end of the pin pulling rod is detachably connected with the rear end of the ejector rod, and the pin pulling rod and the ejector rod are positioned on the same straight line.
Furthermore, the pin pulling rod is detachably connected with the ejector rod through a connecting sleeve; one end of the connecting sleeve is in threaded connection with the front end of the pin pulling rod, and the other end of the connecting sleeve is in threaded connection with the rear end of the ejector rod.
Furthermore, half of the connecting sleeve is in threaded connection with the front end of the pin pulling rod, and the other half of the connecting sleeve is in threaded connection with the rear end of the ejector rod, so that the front end of the pin pulling rod is attached to the rear end of the ejector rod.
Correspondingly, the invention also provides a press-fitting type bearing extracting method, which adopts the press-fitting type bearing extracting device; the method comprises the following steps:
s1: firmly fixing the repaired bearing;
s2: firstly, expanding and clamping an expansion sleeve in the expansion mechanism on the inner wall of a bearing;
s3: after the expansion sleeve is clamped on the inner wall of the bearing and cannot fall off, the pull-back mechanism is connected with the tensioning mechanism;
s4: and finally, applying a reverse acting force to the pulling-back mechanism to pull the bearing out by the tensioning mechanism.
Furthermore, the tensioning mechanism comprises a mandril, an expansion sleeve and a locking nut; the pull-back mechanism comprises a pull pin balancing weight, a pull pin rod and a check ring, and the check ring is sleeved and fixed at the rear end of the pull pin rod; the inner diameter of the central hole of the pin pulling balancing weight is smaller than the outer diameter of the retainer ring;
the step S2 includes:
s21: measuring the inner diameter of a bearing hole of a bearing, and selecting a six-claw expansion sleeve and a mandril, wherein the outer diameter of the six-claw expansion sleeve is smaller than the inner diameter of the bearing hole by one-mm;
s22: sleeving the six-claw expansion sleeve on the ejector rod and locating at the front end of the ejector rod;
s23: screwing a locking nut into the rear end of the ejector rod, and manually locking the six-claw expansion sleeve;
s24: after the six-claw expansion sleeve is locked, the six-claw expansion sleeve extends into the bearing hole, and a spanner is used for continuously screwing the locking nut, so that the six-claw expansion sleeve is expanded, extruded with the ejector rod and the inner wall of the bearing hole and meshed together;
the step S3 includes:
s31: sleeving the pin pulling balancing weight into the pin pulling rod;
s32: one end of the connecting sleeve is connected to the rear end of the ejector rod, and the other end of the connecting sleeve is connected to the front end of the pin pulling rod, so that the ejector rod and the pin pulling rod are connected into a whole along a straight line, and the front end of the pin pulling rod is attached to the rear end of the ejector rod;
the step S4 includes:
s41: the pin pulling balancing weight is impacted on the check ring by applying a reverse acting force to the pin pulling balancing weight;
s42: the retainer ring is impacted by the pin pulling balancing weight for many times, so that the tensioning mechanism is pulled out of the bearing by the reaction force.
According to the scheme provided by the invention, the speed of pulling out the press-fitting bearing is improved, the reworking and maintenance time is effectively saved, the problems that the press-fitting bearing attached to the bottom hole cannot be pulled out by a common hook type pulling-out device and parts and equipment are damaged by common violent disassembling are solved, the quality of reworking and maintaining the bearing can be effectively ensured, and the reworking time is shortened.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
The invention will be further explained with reference to the drawings, in which:
FIG. 1 is a schematic structural view of a press-fitting type bearing extracting device according to the present invention;
fig. 2 is a schematic view of the working principle of the press-fitting type bearing extracting device of the present invention.
In the figure: 1. a top rod; 2. a six-claw expansion sleeve; 3. locking the nut; 4. connecting sleeves; 5. pulling out the pin balancing weight; 6. pulling the pin rod; 7. a bearing; 8. the rear end of the bearing mounting part; 9. a retainer ring; 10. and a jacket.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
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 be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.
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 one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise. The meaning of "a number" is one or more unless specifically limited otherwise.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
As shown in fig. 1 to 2, the present invention provides a press-fitting type bearing extracting device; the pulling-out device specifically comprises a tensioning mechanism and a pulling-back mechanism, wherein the tensioning mechanism is detachably connected with the pulling-back mechanism, so that the bearing 7 is connected in the main direction, and the mutual interference influence between the tensioning mechanism and the pulling-back mechanism is avoided; the tensioning mechanism and the pull-back mechanism are positioned on the same straight line; the tensioning mechanism can be in clamping connection with the inner wall of the bearing 7 through tensioning; the pulling-back mechanism is subjected to reverse acting force so as to pull out the bearing 7 through the tensioning mechanism; according to the press-fitting bearing extracting device provided by the invention, the expansion sleeve in the tensioning mechanism is meshed and clamped on the repaired bearing, and the back extracting mechanism is applied with a reaction force, so that the bearing can be extracted, the damage caused by violently removing the bearing is avoided, the cost is wasted, the operation is convenient, the time and the labor are saved, and the bearing is simply, conveniently and quickly extracted.
Preferably, with the above scheme, as shown in fig. 1 to 2, in this embodiment, the tensioning mechanism specifically includes a carrier rod 1, an expansion sleeve 2, and a lock nut 3; wherein, the expansion sleeve 2 is sleeved at the front end of the ejector rod 1; the expansion sleeve 2 can be meshed with the inner wall of the bearing 7 through expansion so as to be clamped on the inner wall of the bearing hole; namely, the expansion sleeve 2 is tightly connected with the inner wall of the bearing 7 by the tension force of the expansion sleeve 2; furthermore, a locking nut 3 is sleeved at the rear end of the ejector rod 1, and the expansion sleeve 2 is expanded to be meshed with the inner wall of the bearing hole and clamped tightly through rotation; and the locking nut 3 locks the expansion sleeve 2 while rotating the expansion sleeve 2; further, the size of the expansion sleeve 2 and the mandrel 1 is selected and determined according to the inner diameter of the bearing 7, namely, the size of the inner diameter of the bearing hole, and further, based on practical research, the outer diameters of the expansion sleeve and the mandrel 1 are respectively smaller than the inner diameter of the bearing by 0.5mm-1.5mm, preferably: 0.5mm, 0.8mm, 1.2mm, 1.5 mm.
Preferably, in combination with the above solution, as shown in fig. 1 to 2, in the present embodiment, the expansion sleeve 2 is preferably a six-claw expansion sleeve; six expansion claws of the six-claw expansion sleeve can be meshed with six tooth grooves on the inner wall of the bearing 7 so as to be clamped together, and the six expansion claws are designed, preferably, the stress after the internal meshing of bearing holes is uniform, the direction is drawn out, and the clamping is also convenient.
Preferably, with reference to the above solutions, as shown in fig. 1 to 2, in this embodiment, the tensioning mechanism further includes a jacket 10, and the jacket 10 is sleeved on the expansion sleeve 2; the locking nut 3 is sleeved on the jacket 10 and can rotate on the jacket 10; the locking nut 3 is rotated to enable the clamping sleeve 10 to extrude the expansion sleeve 2 to expand and simultaneously lock the expansion sleeve 2; by adopting the scheme, the clamping sleeve 10 is designed, and the clamping sleeve 10 can shrink and clamp the expansion sleeve 2 under the rotating extrusion of the locking nut 3, so that the expansion sleeve 2 is expanded and is convenient to lock.
Preferably, in combination with the above scheme, as shown in fig. 1 to 2, the press-fitting bearing extracting device provided by the present invention includes a pulling-out mechanism, a pulling-out mechanism and a retainer ring 9; the retainer ring 9 is sleeved and fixed at the rear end of the pin pulling rod 6; the pin pulling balancing weight 5 is sleeved on the pin pulling rod 6 and can move back and forth on the pin pulling rod 6; the inner diameter of the central hole of the pin pulling balancing weight 5 is smaller than the outer diameter of the retainer ring 9; the front end of the pin pulling rod 6 is detachably connected with the rear end of the ejector rod 1, and the pin pulling rod 6 and the ejector rod 1 are positioned on the same straight line; the six-claw expansion sleeve and the ejector rod provided by the invention have a function of tensioning and meshing the bearing, are tightly meshed with the inner wall of the bearing by virtue of tensioning force, and are used for easily completing the bearing pulling-out work by pulling the pin pulling balancing weight to and fro to impact the rear part of the pin pulling rod to generate pulling force after the bearing is locked.
Preferably, in combination with the above scheme, as shown in fig. 1 to 2, in this embodiment, the pin pulling rod 6 is detachably connected with the ejector rod 1 through the connecting sleeve 4, so that the bearing is connected in the main direction, and the mutual interference influence between the tensioning mechanism and the pull-back mechanism is avoided; specifically, one end of the connecting sleeve 4 is in threaded connection with the front end of the pin pulling rod 6, the other end of the connecting sleeve 4 is in threaded connection with the rear end of the ejector rod 1, so that detachable connection is achieved, and the threaded connection can facilitate the stress between the pin pulling rod 6 and the ejector rod 1.
Preferably, with the above scheme, as shown in fig. 1 to 2, in this embodiment, one half of the connecting sleeve 4 is in threaded connection with the front end of the pin pulling rod 6, and the other half of the connecting sleeve 4 is in threaded connection with the rear end of the ejector rod 1, so that the front end of the pin pulling rod 6 is attached to the rear end of the ejector rod 1; design like this, make ejector pin 1 and pin pulling rod 6 can laminate through adapter sleeve 4 and link together, consequently when applying the striking effort to pin pulling rod 6 again, the effort can be better act on ejector pin 1 to exert reaction force and pull out bearing 7.
The press-fitting bearing pulling-out device provided by the invention solves the technical problems that the existing device is pulled out after the bearing structure is damaged, so that the time and the cost are wasted, and the bearing is difficult to pull out after the bearing pressure is reached, is very convenient to use, reduces the labor intensity, and effectively utilizes the matching of the tension force and the pulling force.
Correspondingly, in combination with the above scheme, as shown in fig. 1 to 2, the invention also provides a press-fitting type bearing extracting method, which adopts the press-fitting type bearing extracting device; the method specifically comprises the following steps:
s1: firmly fixing the repaired bearing 7;
s2: firstly, expanding and clamping an expansion sleeve in the expansion mechanism on the inner wall of a bearing 7;
s3: after the expansion sleeve is clamped on the inner wall of the bearing 7 and cannot fall off, the pull-back mechanism is connected with the tensioning mechanism;
s4: and finally, applying a reverse acting force to the pulling-back mechanism to pull the bearing 7 out by the tensioning mechanism.
The invention also provides a method for pulling out the press-fitting bearing, which can simply, conveniently and quickly pull out the bearing after the bearing is locked by the pulling-out device, effectively save time and avoid part damage caused by destructive disassembly.
Preferably, with the above solution, as shown in fig. 1 to 2, in this embodiment, the tensioning mechanism includes a mandrel 1, an expansion sleeve 2, and a lock nut 3; the pull-back mechanism comprises a pin pulling balancing weight 5, a pin pulling rod 6 and a check ring 9, and the check ring 9 is sleeved and fixed at the rear end of the pin pulling rod 6; the inner diameter of the central hole of the pin pulling balancing weight 5 is smaller than the outer diameter of the retainer ring 9; wherein the content of the first and second substances,
the step of S2 includes:
s21: measuring the inner diameter of a bearing hole of the bearing 7, and selecting a six-claw expansion sleeve and a mandril 1 with the outer diameter smaller than the inner diameter of the bearing hole by 0.5-1.5 mm;
s22: sleeving the six-claw expansion sleeve on the ejector rod 1 and locating at the front end of the ejector rod 1;
s23: screwing a locking nut 3 from the rear end of the ejector rod 1, and manually locking the six-claw expansion sleeve;
s24: after the six-claw expansion sleeve is locked, the six-claw expansion sleeve extends into the bearing hole, and the locking nut 3 is continuously screwed by using a spanner, so that the six-claw expansion sleeve is expanded, extruded with the ejector rod 1 and the inner wall of the bearing hole and meshed together;
the step of S3 includes:
s31: sleeving the pin pulling balancing weight 5 into the pin pulling rod 6;
s32: one end of a connecting sleeve 4 is connected to the rear end of the ejector rod 1, the other end of the connecting sleeve 4 is connected to the front end of the pin pulling rod 6, so that the ejector rod 1 and the pin pulling rod 6 are connected into a whole along a straight line, and the front end of the pin pulling rod 6 is attached to the rear end of the ejector rod 1; specifically, one half of the connecting sleeve 4 is in threaded connection with the front end of the pin pulling rod 6, and the other half of the connecting sleeve 4 is in threaded connection with the rear end of the ejector rod 1, so that the front end of the pin pulling rod 6 is attached to the rear end of the ejector rod 1; due to the design, the ejector rod 1 and the pin pulling rod 6 can be jointed and connected together through the connecting sleeve 4, so that when impact acting force is applied to the pin pulling rod 6, the acting force can better act on the ejector rod 1, and the bearing 7 is pulled out by applying reaction force;
the step of S4 includes:
s41: the pin pulling balancing weight 5 is impacted on the check ring 9 by applying reverse acting force to the pin pulling balancing weight 5; specifically, the left hand holds the pin pulling rod to impact the rear end of the plane retainer ring, and the right hand holds the pin pulling counterweight block to rapidly pull and impact the rear end impact surface of the pin pulling rod;
s42: the pin pulling balancing weight 5 impacts the retainer ring 9 for many times, so that the tensioning mechanism pulls out the bearing under the reaction force; specifically, the bearing can be slowly pulled out of the hole at the rear end 8 of the bearing mounting part after the bearing is repeatedly pulled back and forth, and the pin pulling rod, the balancing weight, the connecting sleeve and the locking nut are sequentially taken down after the bearing is pulled out, so that the bearing can be taken out.
According to the scheme provided by the invention, the speed of pulling out the press-fitting bearing is improved, the reworking and maintenance time is effectively saved, the problems that the press-fitting bearing attached to the bottom hole cannot be pulled out by a common hook type pulling-out device and parts and equipment are damaged by common violent disassembling are solved, the quality of reworking and maintaining the bearing can be effectively ensured, and the reworking time is shortened.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way. Those skilled in the art can make numerous possible variations and modifications to the described embodiments, or modify equivalent embodiments, without departing from the scope of the invention. Therefore, any modification, equivalent change and modification made to the above embodiments according to the technology of the present invention are within the protection scope of the present invention, unless the content of the technical solution of the present invention is departed from.
Claims (10)
1. The press-mounting bearing pulling-out device is characterized by comprising a tensioning mechanism and a pulling-back mechanism, wherein the tensioning mechanism is detachably connected with the pulling-back mechanism, and the tensioning mechanism and the pulling-back mechanism are positioned on the same straight line; the tensioning mechanism can be in clamping connection with the inner wall of the bearing through tensioning; the pulling-back mechanism is subjected to reverse acting force so as to pull out the bearing through the tensioning mechanism.
2. The press-fitting bearing extracting device according to claim 1, wherein the tensioning mechanism comprises a push rod (1), an expansion sleeve (2) and a locking nut (3); the expansion sleeve (2) is sleeved at the front end of the ejector rod (1); the expansion sleeve (2) is meshed with the inner wall of the bearing through expansion, and the expansion sleeve (2) is tightly connected with the inner wall of the bearing by the tension force of the expansion sleeve (2); the locking nut (3) is sleeved at the rear end of the ejector rod (1) and rotates to enable the expansion sleeve (2) to expand; the locking nut (3) locks the expansion sleeve (2) when rotating to expand the expansion sleeve (2).
3. The press-fitting bearing extraction device according to claim 2, wherein the expansion sleeve (2) is a six-claw expansion sleeve; six expansion claws of the six-claw expansion sleeve can be meshed with six tooth grooves in the inner wall of the bearing so as to be clamped together.
4. The press-fitting bearing extraction device according to claim 2, wherein the outer diameters of the expansion sleeve and the ejector rod (1) are respectively smaller than the inner diameter of the bearing by 0.5mm to 1.5 mm.
5. The press-fitting bearing extraction device according to claim 2, wherein the tensioning mechanism further comprises a jacket (10), and the jacket (10) is sleeved on the expansion sleeve (2); the locking nut (3) is sleeved on the jacket (10) and can rotate on the jacket (10); the locking nut (3) enables the clamping sleeve (10) to extrude the expansion sleeve (2) to expand through rotation, and simultaneously locks the expansion sleeve (2).
6. A press-fitting type bearing extraction device according to any one of claims 2 to 5, wherein the pull-back mechanism comprises a pin-pulling balancing weight (5), a pin-pulling rod (6) and a retainer ring (9); the retainer ring (9) is sleeved and fixed at the rear end of the pin pulling rod (6); the pin pulling balancing weight (5) is sleeved on the pin pulling rod (6) and can move in a reciprocating manner on the pin pulling rod (6); the inner diameter of a central hole of the pin pulling balancing weight (5) is smaller than the outer diameter of the retainer ring (9); the front end of the pin pulling rod (6) is detachably connected with the rear end of the ejector rod (1), and the pin pulling rod (6) and the ejector rod (1) are located on the same straight line.
7. The press-fitting bearing extraction device according to claim 6, wherein the pin extraction rod (6) is detachably connected with the ejector rod (1) through a connecting sleeve (4); one end of the connecting sleeve (4) is in threaded connection with the front end of the pin pulling rod (6), and the other end of the connecting sleeve (4) is in threaded connection with the rear end of the ejector rod (1).
8. The press-fitting bearing extraction device according to claim 7, wherein one half of the connecting sleeve (4) is in threaded connection with the front end of the pin extraction rod (6), and the other half of the connecting sleeve (4) is in threaded connection with the rear end of the ejector rod (1), so that the front end of the pin extraction rod (6) is attached to the rear end of the ejector rod (1).
9. A press-fitting type bearing extracting method using the press-fitting type bearing extracting apparatus according to any one of claims 1 to 8; characterized in that the method comprises the following steps:
s1: firmly fixing the repaired bearing;
s2: firstly, expanding and clamping an expansion sleeve in the expansion mechanism on the inner wall of a bearing;
s3: after the expansion sleeve is clamped on the inner wall of the bearing and cannot fall off, connecting the pull-back mechanism with the tensioning mechanism;
s4: and finally, applying a reverse acting force to the pulling-back mechanism so as to pull out the bearing by the tensioning mechanism.
10. The method for pulling out the press-fitting bearing as claimed in claim 9, wherein the tensioning mechanism comprises a push rod (1), an expansion sleeve (2) and a locking nut (3); the pull-back mechanism comprises a pin pulling balancing weight (5), a pin pulling rod (6) and a check ring (9), and the check ring (9) is sleeved and fixed at the rear end of the pin pulling rod (6); the inner diameter of a central hole of the pin pulling balancing weight (5) is smaller than the outer diameter of the retainer ring (9);
the step of S2 includes:
s21: measuring the inner diameter of a bearing hole of the bearing, and selecting a six-claw expansion sleeve and a mandril (1) with the outer diameter smaller than the inner diameter of the bearing hole by 0.5-1.5 mm;
s22: sleeving the six-claw expansion sleeve on the ejector rod (1) and locating at the front end of the ejector rod (1);
s23: screwing the locking nut (3) into the rear end of the ejector rod (1) and manually locking the six-claw expansion sleeve;
s24: after the six-claw expansion sleeve is locked, the six-claw expansion sleeve extends into the bearing hole, and a spanner is used for continuously screwing the locking nut (3), so that the six-claw expansion sleeve is expanded, extruded with the ejector rod and the inner wall of the bearing hole and meshed together;
the step of S3 includes:
s31: sleeving the pin pulling balancing weight (5) into the pin pulling rod (6);
s32: one end of a connecting sleeve (4) is connected to the rear end of the ejector rod (1), the other end of the connecting sleeve (4) is connected to the front end of the pin pulling rod (6), so that the ejector rod (1) and the pin pulling rod (6) are connected into a whole along a straight line, and the front end of the pin pulling rod (6) is attached to the rear end of the ejector rod (1);
the step of S4 includes:
s41: applying a reverse acting force to the pin pulling balancing weight (5) so as to enable the pin pulling balancing weight (5) to impact on the check ring (9);
s42: the pulling pin counter weight block (5) is collided with the retainer ring (9) for multiple times, so that the tensioning mechanism is pulled out of the bearing by the reaction force.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110204631.5A CN112975844A (en) | 2021-02-24 | 2021-02-24 | Device and method for pulling out press-fitting bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110204631.5A CN112975844A (en) | 2021-02-24 | 2021-02-24 | Device and method for pulling out press-fitting bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112975844A true CN112975844A (en) | 2021-06-18 |
Family
ID=76349912
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110204631.5A Pending CN112975844A (en) | 2021-02-24 | 2021-02-24 | Device and method for pulling out press-fitting bearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112975844A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201279767Y (en) * | 2008-10-29 | 2009-07-29 | 河南省电力公司郑州供电公司 | Multifunctional pin dismantling device |
| CN101537608A (en) * | 2008-03-20 | 2009-09-23 | 崔云江 | Multifunctional blind hole bearing detacher |
| CN105479396A (en) * | 2015-12-07 | 2016-04-13 | 平高集团有限公司 | Lining drawing machine |
| CN205889024U (en) * | 2016-08-18 | 2017-01-18 | 泰山玻璃纤维有限公司 | Embedded spare part dismounting device of wire drawing machine |
| CN206690015U (en) * | 2017-04-10 | 2017-12-01 | 河南中烟工业有限责任公司 | Sealing ring removal tool special |
| CN206869797U (en) * | 2017-06-06 | 2018-01-12 | 唐山钢铁集团有限责任公司 | A kind of reductor embeds nylon sleeve provision for disengagement |
| CN109483469A (en) * | 2018-11-28 | 2019-03-19 | 中国航发长春控制科技有限公司 | A kind of shaft sleeve parts decomposition fixture |
| US20200039040A1 (en) * | 2016-10-07 | 2020-02-06 | Giovanni Andrina | Device for extracting and inserting bushes |
-
2021
- 2021-02-24 CN CN202110204631.5A patent/CN112975844A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101537608A (en) * | 2008-03-20 | 2009-09-23 | 崔云江 | Multifunctional blind hole bearing detacher |
| CN201279767Y (en) * | 2008-10-29 | 2009-07-29 | 河南省电力公司郑州供电公司 | Multifunctional pin dismantling device |
| CN105479396A (en) * | 2015-12-07 | 2016-04-13 | 平高集团有限公司 | Lining drawing machine |
| CN205889024U (en) * | 2016-08-18 | 2017-01-18 | 泰山玻璃纤维有限公司 | Embedded spare part dismounting device of wire drawing machine |
| US20200039040A1 (en) * | 2016-10-07 | 2020-02-06 | Giovanni Andrina | Device for extracting and inserting bushes |
| CN206690015U (en) * | 2017-04-10 | 2017-12-01 | 河南中烟工业有限责任公司 | Sealing ring removal tool special |
| CN206869797U (en) * | 2017-06-06 | 2018-01-12 | 唐山钢铁集团有限责任公司 | A kind of reductor embeds nylon sleeve provision for disengagement |
| CN109483469A (en) * | 2018-11-28 | 2019-03-19 | 中国航发长春控制科技有限公司 | A kind of shaft sleeve parts decomposition fixture |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR20090011109U (en) | Apparatus for Bearing Reworking | |
| US8540458B2 (en) | Center hole ram cable puller | |
| CN109605288B (en) | Shock absorber disassembling equipment | |
| CN112975844A (en) | Device and method for pulling out press-fitting bearing | |
| CN201244801Y (en) | Bolt detacher | |
| CN215658886U (en) | A torsion tightening machine for screwing up oil pump | |
| CN210586793U (en) | Fixed frock of oil pipe reaming shaping | |
| CN210939016U (en) | Chain wrench with jaw | |
| CN209793620U (en) | A extracting tool for vibroflotation device bearing | |
| CN211805896U (en) | Dismounting device for bearing of small motor | |
| CN114434088B (en) | Device and method for disassembling shaft sleeve of centrifugal pump | |
| CN113510657A (en) | Bushing assembling tool and assembling method thereof | |
| CN217097601U (en) | Bearing drawing device | |
| CN220162346U (en) | Dismounting device for half shaft of vehicle | |
| CN219152766U (en) | Quick dismantling device for membrane shell end cover | |
| CN218207382U (en) | Detachable expansion bolt | |
| CN220842749U (en) | Tank torsion shaft disassembling clamp | |
| CN220697823U (en) | Detachable and reusable composite roller | |
| CN213054602U (en) | Dismantle frock of shafting flange tight fit bolt | |
| CN218837605U (en) | Frock is dismantled to aluminium foil rolling mill backup roll bearing box | |
| CN217620376U (en) | Tapered roller bearing drawing device | |
| CN217890730U (en) | Clamping and fastening tool for sucker rod body | |
| CN212471314U (en) | Pin shaft pulling-out device | |
| CN214980749U (en) | Disassembling tool for vibration groove equipment | |
| CN211219490U (en) | Impactor dismounting device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210618 |