CN201755743U - Device for rapid and easy disassembly of bearing inner race - Google Patents
Device for rapid and easy disassembly of bearing inner race Download PDFInfo
- Publication number
- CN201755743U CN201755743U CN2010202990338U CN201020299033U CN201755743U CN 201755743 U CN201755743 U CN 201755743U CN 2010202990338 U CN2010202990338 U CN 2010202990338U CN 201020299033 U CN201020299033 U CN 201020299033U CN 201755743 U CN201755743 U CN 201755743U
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- CN
- China
- Prior art keywords
- inner race
- bearing inner
- spiral inductor
- bearing
- power supply
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- 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.)
- Expired - Fee Related
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Abstract
The utility model relates to a device for rapid and easy disassembly of a bearing inner race. The device comprises a spiral sensor, a heating power supply and bakelite blocks, wherein the diameter D of the spiral sensor is large than the diameter d of the bearing inner race to be disassembled, the bearing inner race is sleeved by the spiral sensor, the bakelite blocks are arranged in the gap between the spiral sensor and the bearing inner race to be disassembled, and the spiral sensor is electrically connected with the heating power supply. The induction current generated by the spiral sensor is used to heat the bearing inner race; the temperature instantly rises through induction heating, and the bearing inner race is rapidly expanded; and a workpiece with the bearing inner race is slightly expanded due to less heating, so that the bearing inner race can be rapidly disassembled. The device can neither damage the bearing inner race nor burn the workpiece assembled with the bearing inner race, and has the advantages of low labor intensity of workers, favorable working environment, high efficiency and low energy consumption.
Description
Technical field
The utility model relates to a kind of device of fast simple dismounting bearing inner race.
Background technology
In the mill milling production process, roll two ends roll neck need use bearing, because the life-span of roll is far longer than the life-span of bearing, after bearing is scrapped, often will the bearing inner race on the roll be disassembled, and changes new bearing and reuses.Because inner ring and roll neck are interference fit, and the magnitude of interference is big, dismantle very difficultly, the method that enterprise's dismounting bearing inner race is repaired in domestic big section steel works, aluminium manufacturer and roll manufacturing is with air pressure gun gas cutting inner ring, cuts out a seam, inner ring is taken off, do like this and both destroyed inner ring, easily roller neck is burnt, labor strength is big, work situation is abominable, and efficient is low, the energy consumption height.
The utility model content
At the problems referred to above, the purpose of this utility model provides the bearing inner race of quick, the simple and easy dismounting all size of a kind of energy, neither destroys inner ring, also can not damage the device of the fast simple dismounting bearing inner race of roller neck.
The realization the technical solution of the utility model is as follows:
A kind of device of fast simple dismounting bearing inner race, comprise spiral inductor, heating power supply, bakelite piece, the diameter D of spiral inductor is greater than the diameter d of bearing demolition inner ring, spiral inductor is enclosed within on the bearing demolition inner ring, the bakelite piece is arranged in the gap between spiral inductor and the bearing demolition inner ring, and spiral inductor is electrically connected with heating power supply.
Described bakelite piece can make spiral inductor and bearing inner race concentric, thereby guarantees the homogeneous heating to bearing inner race, and the setting of bakelite piece is as long as become concentric with spiral inductor with the bearing inner race pad in addition.
Also comprise cooling structure, it comprises the metal tube of making spiral inductor, and metal tube inside is cooling passage, and the two ends of metal tube are connected with the cooling fluid inlet pipe respectively, cooling fluid goes out pipe.After spiral inductor is connected heating power supply, begin to metal tube, to carry cooling fluid that metal tube is cooled from the cooling fluid inlet pipe, guarantee that metal tube can not damage because heating-up temperature is too high.
Magnitude relationship between the diameter D of described spiral inductor and the diameter d of bearing demolition inner ring is: d+40mm≤D≤d+100mm.
The pitch h scope of described spiral inductor is: 20mm-40mm.
Described spiral inductor is made by copper tube, has guaranteed excellent conducting performance.Copper tube can be the red copper square tube, red copper pipe uiform section is the copper tube of other shapes.
Described heating power supply is an intermediate frequency power supply, can regulate the temperature and the heating frequency of heating power, heating according to the bearing inner race of different-thickness.
Adopt such scheme, the spiral inductor that is enclosed within on the bearing demolition inner ring is connected heating power supply, spiral inductor produces induced-current, induced-current acts on the bearing inner race that is disassembled and the bearing demolition inner ring is heated, after energising 5-6 minute, bearing inner race expanded by heating, interior hole dimension become big, produce the gap between the workpiece of bearing inner race and running in bearings inner ring, bearing inner race just can conveniently be easy to take off from the workpiece of running in bearings inner ring.Can become the red copper pipeloop spiral inductor of various different-diameters as required, satisfy the dismounting requirement of the bearing inner race of different size.The utility model especially is fit to the dismounting of diameter greater than the bearing inner race of φ 600mm.The induced-current that the utility model adopts spiral inductor to produce, induced-current heats bearing inner race, eddy-current heating moment intensification, the very fast expansion of bearing inner race, the workpiece of running in bearings inner ring is heated few, it is little to expand, so bearing inner race is disassembled very soon, neither destroys bearing inner race, can be the workpiece burn of running in bearings inner ring yet, labor strength is little, work situation good, and the efficient height, and energy consumption is low.
Description of drawings
Fig. 1 is a fundamental diagram of the present utility model;
Fig. 2 is that the A-A of Fig. 1 is to cutaway view;
In the accompanying drawing, 1 is bearing inner race, and 2 is spiral inductor, and 3 is the bakelite piece, and 4 is heating power supply, and 5 for cooling fluid goes out pipe, and 6 is roller neck, and 7 is the cooling fluid inlet pipe.
The specific embodiment
With specific embodiment the utility model is further specified in conjunction with the accompanying drawings down.
Referring to Fig. 1, shown in 2, a kind of device of fast simple dismounting bearing inner race, comprise spiral inductor 2, heating power supply 4, bakelite piece 3, the diameter D of spiral inductor is greater than the diameter d of bearing demolition inner ring 1, spiral inductor is enclosed within on the bearing inner race 1 that is installed on the roller neck 6, bakelite piece 3 is arranged in the gap of 20mm between spiral inductor and the bearing demolition inner ring, bakelite piece pad is at four quadrantal points places of spiral inductor two ends inner ring, guarantee spiral inductor and bearing inner race concentric, the electric current that spiral inductor is produced can heat bearing inner race uniformly, and spiral inductor 2 is electrically connected with heating power supply 4.
Cooling structure comprises the metal tube of making spiral inductor, metal tube inside is cooling passage, the two ends of metal tube are connected with cooling fluid inlet pipe 7 respectively, cooling fluid goes out pipe 5, select for use coolant pump to carry cooling fluid that spiral inductor is lowered the temperature to the cooling fluid inlet pipe, guarantee the operating temperature of spiral inductor, thereby prolong the service life of spiral inductor.
Heating power supply is preferably intermediate frequency power supply, the power-adjustable of intermediate frequency power supply is at 0KW-300KW, the heating frequency is 1000 hertz-2000 hertz, heating and temperature control is at 100 ℃-150 ℃, after spiral inductor is connected intermediate frequency power supply, spiral inductor produces induced-current, induced-current flows through the bearing demolition inner ring and the bearing demolition inner ring is heated, the spiral inductor energising is after 5-6 minute, the bearing inner race expanded by heating, hole dimension becomes big in the bearing inner race, and produces the gap between the workpiece of assembling bearing demolition inner ring, and bearing inner race is just convenient like this, workpiece from the running in bearings inner ring disassembles quickly.
Spiral inductor in the present embodiment adopts the red copper square tube of 12mm * 12mm * 12mm to make, and the magnitude relationship between the diameter d of its diameter D and bearing demolition inner ring is: D=d+40mm, the pitch h of spiral inductor is: 30mm.
Claims (6)
1. the device of a fast simple dismounting bearing inner race, it is characterized in that: comprise spiral inductor, heating power supply, bakelite piece, the diameter D of spiral inductor is greater than the diameter d of bearing demolition inner ring, spiral inductor is enclosed within on the bearing demolition inner ring, the bakelite piece is arranged in the gap between spiral inductor and the bearing demolition inner ring, and spiral inductor is electrically connected with heating power supply.
2. the device of a kind of fast simple dismounting bearing inner race according to claim 1, it is characterized in that: also comprise cooling structure, it comprises the metal tube of making spiral inductor, and metal tube inside is cooling passage, and the two ends of metal tube are connected with the cooling fluid inlet pipe respectively, cooling fluid goes out pipe.
3. the device of a kind of fast simple dismounting bearing inner race according to claim 1 is characterized in that: the magnitude relationship between the diameter D of described spiral inductor and the diameter d of bearing demolition inner ring is: d+40mm≤D≤d+100mm.
4. the device of a kind of fast simple dismounting bearing inner race according to claim 1 is characterized in that: the pitch h scope of described spiral inductor is: 20mm-40mm.
5. according to the device of each described a kind of fast simple dismounting bearing inner race among the claim 1-4, it is characterized in that: described spiral inductor is made by copper tube.
6. according to the device of each described a kind of fast simple dismounting bearing inner race among the claim 1-4, it is characterized in that: described heating power supply is an intermediate frequency power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202990338U CN201755743U (en) | 2010-08-20 | 2010-08-20 | Device for rapid and easy disassembly of bearing inner race |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202990338U CN201755743U (en) | 2010-08-20 | 2010-08-20 | Device for rapid and easy disassembly of bearing inner race |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201755743U true CN201755743U (en) | 2011-03-09 |
Family
ID=43643008
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202990338U Expired - Fee Related CN201755743U (en) | 2010-08-20 | 2010-08-20 | Device for rapid and easy disassembly of bearing inner race |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201755743U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101913053A (en) * | 2010-08-20 | 2010-12-15 | 常州宝隆冶金设备制造有限公司 | Method and device for quickly and simply disassembling bearing inner ring |
| CN103801898A (en) * | 2012-11-12 | 2014-05-21 | 中国南方航空工业(集团)有限公司 | Electric induction separating method for inner ring of bearing of aircraft engine |
-
2010
- 2010-08-20 CN CN2010202990338U patent/CN201755743U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101913053A (en) * | 2010-08-20 | 2010-12-15 | 常州宝隆冶金设备制造有限公司 | Method and device for quickly and simply disassembling bearing inner ring |
| CN101913053B (en) * | 2010-08-20 | 2012-05-30 | 常州宝隆冶金设备制造有限公司 | Method and device for quickly and simply disassembling bearing inner ring |
| CN103801898A (en) * | 2012-11-12 | 2014-05-21 | 中国南方航空工业(集团)有限公司 | Electric induction separating method for inner ring of bearing of aircraft engine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110309 Termination date: 20150820 |
|
| EXPY | Termination of patent right or utility model |