CN112060004A - Disassembling tool for bearings of parallel structures and using method - Google Patents
Disassembling tool for bearings of parallel structures and using method Download PDFInfo
- Publication number
- CN112060004A CN112060004A CN202011061511.6A CN202011061511A CN112060004A CN 112060004 A CN112060004 A CN 112060004A CN 202011061511 A CN202011061511 A CN 202011061511A CN 112060004 A CN112060004 A CN 112060004A
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- bearing
- bearings
- split
- mandrel
- split type
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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
- B25B27/06—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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mounting Of Bearings Or Others (AREA)
- Rolling Contact Bearings (AREA)
Abstract
The invention discloses a disassembling tool for bearings with parallel structures and a using method thereof, belonging to the technical field of mechanical tools. When the disassembling tool is used, a bearing accessory to be disassembled is arranged on the base, the two split mandrels extend into the bearing inner ring, the two shoulder parts are positioned, the press-fitting sleeve is sleeved outside the two split mandrels, and pressure is applied to the upper end face of the press-fitting sleeve.
Description
Technical Field
The invention relates to a disassembling tool for bearings with parallel structures and a using method thereof, belonging to the technical field of mechanical tools.
Background
The bearing is an important part in modern mechanical equipment, has the main functions of supporting a mechanical rotating body, reducing the friction coefficient in the motion process of the mechanical rotating body and ensuring the rotation precision of the mechanical rotating body, and consists of six parts, namely an outer ring, an inner ring, a rolling body, a retainer, a seal and lubricating oil.
In some mechanical structures, bearings of the same nominal type can be combined into several types such as 2 rows, 3 rows, 4 rows and the like, and when the single bearings are combined for increasing the rigidity of the main shaft and increasing the preload, the limit rotating speed is lower than that of the single bearings. For example, in a cantilever shaft structure, a high-speed and high-load belt tensioner transmission member or a gear transmission member, and some gear roller crushers, two sets of bearings are often mounted in parallel in a use environment which needs high rotating speed, high radial load and high axial load. Install two bearings in the base promptly, interference fit between bearing frame and the bearing, two bearing inner races adopt hole retaining ring location installation, when one of them bearing takes place to damage, need change the bearing, because the accessory that bearing frame and bearing are constituteed does not have unnecessary space basically, uses the unable location of common integral bearing extrusion instrument, can't disassemble, consequently can only abandon whole accessory when damaging, causes the wasting of resources, increases the cost. Therefore, a tool for disassembling the bearing of the assembly fitting is urgently needed.
Disclosure of Invention
In order to solve the problems, the invention provides a disassembling tool for a parallel structure type bearing, which can disassemble a bearing in a combined accessory of the parallel structure type bearing, and in order to achieve the purpose, the technical scheme adopted by the invention is as follows:
the utility model provides a disassemble instrument of structural formula bearing side by side, is including the base that is used for supporting bearing base, inside has bearing whereabouts space, two split type dabbers and pressure equipment sleeve, split type dabber includes the semi-cylindrical axle and fixes being used for stretching into the circular bead between two bearings of the outside extension in semi-cylindrical axle bottom, and the semi-cylindrical axle closes into a complete cylinder axle when two split type dabbers merge, and pressure equipment sleeve cover lock is outside two split type dabbers of merging, pressure equipment sleeve periphery and bearing hole clearance fit.
The technical scheme of the invention is further improved as follows: the base is a cylindrical structure with a round hole in the center, and a concave spigot structure matched with the periphery of the bearing seat is designed on the upper end face of the base.
The technical scheme of the invention is further improved as follows: two edges of a shoulder of the split mandrel are tangent to the bottom surface of the semi-cylindrical shaft, the edge of the extending part of the shoulder is an arc with the center of a circle coincident with the center of a circle of the semi-cylindrical shaft, and the radius of the arc is smaller than the sum of the wall thickness of the two-time press-fit sleeve and the radius of the split mandrel.
The technical scheme of the invention is further improved as follows: the thickness of the shoulder of the split mandrel is smaller than the gap between the parallel bearings to be disassembled, and the semi-circle diameter of the semi-cylinder is smaller than the inner diameter of the inner ring of the parallel bearings to be disassembled.
The technical scheme of the invention is further improved as follows: the inner wall of the press-fitting sleeve is in clearance fit with the outer circumferences of the two combined split mandrels, and the outer circumference of the press-fitting sleeve is in clearance fit with the inner ring of the bearing to be disassembled.
The technical scheme of the invention is further improved as follows: the diameter of the round hole of the base is larger than the diameter of an outer ring of the bearing to be disassembled and smaller than the outer diameter of the bearing base.
The technical scheme of the invention is further improved as follows: the use method of the disassembling tool for the bearings of the parallel structure type comprises the following steps:
1) placing the bearing accessory to be disassembled at the seam allowance of the base;
2) when a split mandrel is moved to a position of a gap between two bearings along the axial direction of an inner hole of the bearing, the split mandrel is moved in the radial direction, so that the outer circle of the split mandrel is attached to the inner hole of the bearing, and meanwhile, a shoulder at the bottom part extends into the space between the two bearings;
3) tightly attaching the side end face of the other split type mandrel to the side end face of the split type mandrel in the step 2), and axially moving along the inner hole of the bearing;
4) the two split mandrels are moved radially towards the center direction of the bearing hole at the same time, so that the bottom circular shoulders of the two split mandrels extend into the space between the two bearings;
5) and (3) installing the press-fitting sleeve outside the two split mandrels, and finally applying pressure on the upper end surface of the sleeve to press the lower end bearing out.
Due to the adoption of the technology, the invention has the technical effects that:
the mandrel is designed into a split structure, the bottom shoulder of the mandrel is extended into the axial space of two parallel bearings through the movement in the radial direction, and the mandrel is arranged in the sleeve and positioned in the inner ring of the bearing, so that the problem that the bearing can not be positioned and pressurized to disassemble by an integral tool aiming at the bearings which are used in parallel and positioned by the inner hole retainer ring in the middle is solved; the position is limited by the sleeve, the positioning contact area is uniform, the pressure force born by the bearing is uniform, and the phenomena of pressure deflection, pressure deviation and the like can not occur.
Drawings
FIG. 1 is a schematic view of a bearing disassembly tool of the present invention applied to a bearing assembly to be disassembled;
FIG. 2 is a schematic view of a split mandrel of the present invention;
FIG. 3 is a left side view of FIG. 2;
FIGS. 4-7 are schematic views illustrating the operation of a parallel structure bearing disassembling tool according to the present invention;
the split type mandrel comprises a base 1, a base 2, a split type mandrel 3, a shoulder and a press-fitting sleeve 4.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
As shown in figure 1, the disassembling tool for the bearings with the parallel structure comprises a base 1, two split mandrels 2 and a press-fitting sleeve 4, wherein the base 1 is used for supporting a bearing base and internally provided with a bearing falling space, the base 1 is of a cylindrical structure with a round hole in the center, a concave spigot structure is designed on the upper end face, and the diameter of the round hole of the base 1 is larger than the diameter of an outer ring of the bearing to be disassembled and smaller than the outer diameter of the bearing base. Split type dabber 2 includes the semi-cylindrical axle and fixes being used for stretching into circular bead 3 between two bearings of the outside extension in semi-cylindrical axle bottom, and the semi-cylindrical axle closes to a complete cylinder axle when two split type dabbers 2 merge, and 4 cover locks of pressure equipment sleeve are outside two split type dabbers 2 of merging, and 4 peripheries of pressure equipment sleeve and bearing hole clearance fit. The above-mentioned
Two edges of a shoulder 3 of the split mandrel are perpendicular to straight edges of the bottom surface of the semi-cylindrical shaft and tangent to a circle, the edge of a shoulder extending part is arc-shaped, the edge of the shoulder extending part is arc-shaped with the center of the circle coincident with the center of the semi-cylindrical shaft, and the radius of the arc is smaller than the sum of twice the wall thickness of the press-fitting sleeve 4 and the radius of the split mandrel 2.
The thickness of the shoulder 3 of the split type mandrel 2 is smaller than the gap between the parallel bearings to be disassembled, and the semi-circle diameter of the semi-cylinder is smaller than the inner diameter of the inner ring of the parallel bearings to be disassembled. The inner wall of the press-fitting sleeve 4 is in clearance fit with the outer circumferences of the two combined split mandrels 2, and the outer circumference of the press-fitting sleeve 4 is in clearance fit with the inner ring of the bearing to be disassembled. The diameter of the round hole of the base 1 is larger than the diameter of the outer ring of the bearing to be disassembled and smaller than the outer diameter of the bearing base.
The application method comprises the following steps:
1) placing the bearing accessory to be disassembled at the seam allowance of the base 1;
2) when a split type mandrel 2 is axially moved to a position of a gap between two bearings along an inner hole of the bearing, the split type mandrel is radially moved to enable the outer circle of the split type mandrel to be tightly attached to the inner hole of the bearing, and meanwhile, a shoulder at the bottom of the split type mandrel extends into the space between the two bearings;
3) tightly attaching the side end face of the other split mandrel 2 to the side end face of the split mandrel in the step 2), and axially moving along the inner hole of the bearing;
4) the two split mandrels 2 are moved radially towards the center direction of the bearing hole at the same time, so that the bottom circular bead of the two split mandrels 2 extends into the space between the two bearings;
5) and (3) installing the press-fitting sleeve 4 outside the two split mandrels, and finally applying pressure on the upper end surface of the press-fitting sleeve 4 to press the lower end bearing out.
After the bearing at one end is pressed out, the part is turned over, and the bearing at the other end can be disassembled by adopting an integral tool.
The disassembling tool is simple and effective, solves the disassembling problem of accessories of bearings with parallel structures and fixed by the positioning check ring between the bearings, can replace only one bearing when one bearing is damaged, does not need to give up all the bearings, and saves cost.
Claims (7)
1. A tool for disassembling bearings of parallel structures is characterized in that: including being used for supporting bearing base, inside have base (1), two split type dabber (2) and pressure equipment sleeve (4) of bearing whereabouts space, split type dabber (2) include the semicylindrical axle with fix outside extension in the semicylindrical axle bottom be used for stretching into circular bead (3) between two bearings, the semicylindrical axle closes to a complete cylinder axle when two split type dabber (2) merge, pressure equipment sleeve (4) cover lock is outside two split type dabber (2) of merging, pressure equipment sleeve (4) periphery and bearing hole clearance fit.
2. The tool for disassembling a parallel structure bearing according to claim 1, wherein: the base (1) is of a cylindrical structure with a round hole in the center, and a concave spigot structure matched with the periphery of the bearing seat is designed on the upper end face of the base.
3. The tool for disassembling a parallel structure bearing according to claim 1, wherein: two edges of a shoulder (3) of the split mandrel (2) are tangent to the bottom surface of the semi-cylindrical shaft, the edge of the extending part of the shoulder is an arc with the center of a circle coincident with the center of a semi-cylindrical shaft, and the radius of the arc is less than the sum of twice the wall thickness of the press-fitting sleeve (4) and the radius of the split mandrel (2).
4. The tool for disassembling a parallel structure bearing according to claim 1, wherein: the thickness of the shoulder (3) of the split mandrel (2) is smaller than the gap between the parallel bearings to be disassembled, and the semi-circle diameter of the semi-cylinder is smaller than the inner diameter of the inner ring of the parallel bearings to be disassembled.
5. The tool for disassembling a parallel structure bearing according to claim 1, wherein: the inner wall of the press-fitting sleeve (4) is in clearance fit with the outer circumferences of the two split mandrels (2) which are combined together, and the outer circumference of the press-fitting sleeve (4) is in clearance fit with the inner ring of the bearing to be disassembled.
6. The tool for disassembling a parallel structure bearing according to claim 1, wherein: the diameter of the round hole of the base (1) is larger than the diameter of an outer ring of the bearing to be disassembled and smaller than the outer diameter of the bearing base.
7. The use method of the disassembling tool for the bearings with the parallel structures is characterized in that: the method comprises the following steps:
1) placing the bearing accessory to be disassembled at the seam allowance of the base;
2) when a split type mandrel (2) is axially moved to a position of a gap between two bearings along an inner hole of the bearing, the split type mandrel is radially moved, so that the outer circle of the split type mandrel (2) is tightly attached to the inner hole of the bearing, and meanwhile, a shoulder (3) at the bottom extends into the space between the two bearings;
3) tightly attaching the side end face of the other split type mandrel (2) to the side end face of the split type mandrel (2) in the step 2), and axially moving along the inner hole of the bearing;
4) the two split mandrels (2) are moved radially towards the center direction of the bearing hole at the same time, so that the bottom shoulders (3) of the two split mandrels (2) extend into the space between the two bearings;
5) and (3) installing the press-fitting sleeve (4) outside the two split mandrels (2), and finally applying pressure on the upper end surface of the sleeve to press out the lower end bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011061511.6A CN112060004B (en) | 2020-09-30 | 2020-09-30 | Disassembling tool for parallel structural type bearing and using method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011061511.6A CN112060004B (en) | 2020-09-30 | 2020-09-30 | Disassembling tool for parallel structural type bearing and using method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112060004A true CN112060004A (en) | 2020-12-11 |
| CN112060004B CN112060004B (en) | 2023-08-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011061511.6A Active CN112060004B (en) | 2020-09-30 | 2020-09-30 | Disassembling tool for parallel structural type bearing and using method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114043420A (en) * | 2021-10-28 | 2022-02-15 | 中车株洲电力机车有限公司 | Narrow space interference fit ring type workpiece withdrawal tool and method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4207664A (en) * | 1978-08-08 | 1980-06-17 | Louis Zoula | Pulling tool for extracting bushings and bearings |
| JPH0839450A (en) * | 1994-07-26 | 1996-02-13 | Hitachi Building Syst Eng & Service Co Ltd | Bearing member extracting device for electromagnetic brake |
| TWM459083U (en) * | 2013-04-29 | 2013-08-11 | Jui Deng Ind Corp | Device for dismounting bearing |
| JP2015134392A (en) * | 2014-01-17 | 2015-07-27 | 株式会社日立ビルシステム | Press-in bearing extractor and extraction method |
| CN206717396U (en) * | 2017-05-19 | 2017-12-08 | 中车北京南口机械有限公司 | The disassembling fixture of planetary wheel of wind turbine gearbox bearing |
-
2020
- 2020-09-30 CN CN202011061511.6A patent/CN112060004B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4207664A (en) * | 1978-08-08 | 1980-06-17 | Louis Zoula | Pulling tool for extracting bushings and bearings |
| JPH0839450A (en) * | 1994-07-26 | 1996-02-13 | Hitachi Building Syst Eng & Service Co Ltd | Bearing member extracting device for electromagnetic brake |
| TWM459083U (en) * | 2013-04-29 | 2013-08-11 | Jui Deng Ind Corp | Device for dismounting bearing |
| JP2015134392A (en) * | 2014-01-17 | 2015-07-27 | 株式会社日立ビルシステム | Press-in bearing extractor and extraction method |
| CN206717396U (en) * | 2017-05-19 | 2017-12-08 | 中车北京南口机械有限公司 | The disassembling fixture of planetary wheel of wind turbine gearbox bearing |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114043420A (en) * | 2021-10-28 | 2022-02-15 | 中车株洲电力机车有限公司 | Narrow space interference fit ring type workpiece withdrawal tool and method |
| CN114043420B (en) * | 2021-10-28 | 2023-10-13 | 中车株洲电力机车有限公司 | Tool and method for disassembling small-space interference fit ring-type workpiece |
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| Publication number | Publication date |
|---|---|
| CN112060004B (en) | 2023-08-18 |
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