CN209394604U - Screw thread drive-in large diameter bearing installing tool - Google Patents
Screw thread drive-in large diameter bearing installing tool Download PDFInfo
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- CN209394604U CN209394604U CN201822242230.5U CN201822242230U CN209394604U CN 209394604 U CN209394604 U CN 209394604U CN 201822242230 U CN201822242230 U CN 201822242230U CN 209394604 U CN209394604 U CN 209394604U
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- bearing
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Abstract
The utility model relates to nuclear power station operating maintenance technical fields, specifically disclose a kind of screw thread drive-in large diameter bearing installing tool.The tool includes dummy shaft, jacking ring and thrust ring, wherein, dummy shaft is cylindrical tube structure, its head is fixed on motor shaft, bearing passes through dummy shaft and covers at the diameter of axle position of motor shaft, internal diameter is cased on dummy shaft slightly larger than dummy shaft ring-type jacking ring, thrust ring is inserted in dummy shaft, and it is rotated on dummy shaft external screw thread by thrust ring internal screw thread and generates propulsive force, and propulsive force is transferred to by bearing by thrust ring.Dummy shaft outer diameter is slightly less than the diameter of axle in the tool, can quick and precisely position bearing；Installation process is not damaged to bearing, generates thrust using screw thread to install bearing, can avoid completely because damaging caused by being tapped energetically to bearing；Meanwhile installation process is clean, specification, the thrust that thrust ring generates passes to bearing by jacking ring, and the relative position of jacking ring and bearing is fixed, and abrasion and pollution will not be caused to parts of bearings.
Description
Technical field
The invention belongs to nuclear power station operating maintenance technical fields, and in particular to a kind of screw thread drive-in large diameter bearing installation
Tool.
Background technique
No. 3/4 unit of two factory, the Qin has 8 safe house service pump motors, and periodic preventative safeguards that execution in every 4 years is primary comprehensive
Disassembling overhaul, motor are vertical installation, and each disassembling overhaul will be located at two thrust axis installed back-to-back at the top of motor
Hold and replaced, bearing designation SKF7326, due to motor bearing chamber use with end cap separation design, so bearing return dress
When two thrust bearings first can only be packed into bearing chambers, time be attached on axis after then entirely heat bearing together with bearing chamber,
During heating back dress, since two bearings reach 80kg plus bearing chamber total weight, and rear surface temperature is heated close to 100
DEG C, it is necessary to it is positioned on axis by traveling crane, entire bearing block is returned again together with bearing then and is attached to position, was filled returning
Since the dedicated bearing of SKF returns holding tool (such as Fig. 1) maximum thrust bearing for supporting internal diameter 55mm in journey, and safe house service pump
Motor bearings internal diameter reaches 130mm and is not available.Dummy shaft can only be passed through indirectly to bearing inner race using the big mass objects such as road mesh
Bearing is returned and is attached to position by pressure.But using this method time dress bearing, there are following potential risks: although 1. dummy shafts directly act on
In bearing inner race, but forced position is not fixed, and by manually carrying out positioning bearing, there are certain damage risks；2. utilizing sleeper
When etc. being hit, force direction and dynamics are unstable, it is most likely that hit and deflect away from existing personnel and equipment Risk；3. operating process
In cannot completely cut off sundries, especially dummy shaft and bearing inner race contact site completely, since impact force is larger, for protecting in bearing
The covering material of circle is easily broken, and clast enters Bearing inner, may cause raceway damage or reduces the grease service life.
Summary of the invention
The purpose of the present invention is to provide a kind of screw thread drive-in large diameter bearing installing tools, solve existing motor bearings
The problem of returning dress avoids the damage caused by bearing during tapping installation bearing of former mounting means, and to bearing
The pollution of grease and raceway gap, so that the installation of bearing more specification, safety.
Technical scheme is as follows: a kind of screw thread drive-in imperial palace through bearing installing tool, the tool include dummy shaft,
Jacking ring and thrust ring, wherein dummy shaft is cylindrical tube structure, and head is fixed on motor shaft, and bearing passes through dummy shaft simultaneously
It covering at the diameter of axle position of motor shaft, internal diameter is cased on dummy shaft slightly larger than dummy shaft ring-type jacking ring, thrust ring is inserted in dummy shaft,
And it is rotated on dummy shaft external screw thread by thrust ring internal screw thread and generates propulsive force, and propulsive force is transferred to by axis by thrust ring
It holds.
Head has the bearing fastening thread cooperation on one section of trapezoidal internal thread, with motor shaft on the left of the dummy shaft,
And dummy shaft can be fixed on motor shaft 1；There is one section of trapezoidal external screw thread in dummy shaft middle and back, in circular thrust ring
Screw thread matching, and pass through the head precession of thrust circumferential direction dummy shaft when, generate installation bearing propulsive force.
The jacking ring is circular ring structure, and head end is machined with flange, and the inner ring of the flange and bearing matches,
The flange on jacking ring is set only to be in contact with bearing inner race.
It is additionally provided with plane bearing between the jacking ring and thrust ring, makes thrust ring only by axial direction using plane bearing
Thrust is transferred to jacking ring.
The tail end face of the jacking ring is circumferentially provided with rectangular channel, the rectangular channel phase with thrust ring head circumferential direction
Match, and plane bearing is installed in two rectangular channels of jacking ring and thrust ring.
It is provided with blind hole on the thrust ring outer cylinder, thrust ring is rotated using eave tile wrench.
The dummy shaft is both ends open cylindrical tube structure made of steel pipe, and outer diameter is slightly less than bearing to be installed
Motor shaft diameter of axle size.
The outer diameter of the dummy shaft is 1mm smaller than the diameter of axle of motor shaft.
Remarkable result of the invention is: a kind of screw thread drive-in large diameter bearing installing tool of the present invention, energy
Enough quickly positioning bearing, dummy shaft outer diameter are slightly less than the diameter of axle, can quick and precisely position bearing using dummy shaft；Installation process to bearing without
Damage installs bearing using screw thread generation thrust, the movement not tapped, caused by can avoiding completely because tapping energetically to bearing
Damage；Meanwhile installation process is clean, specification, the thrust that thrust ring generates passes to bearing, jacking ring and bearing by jacking ring
Relative position fix, parts of bearings will not be caused wear and pollute.
Detailed description of the invention
Fig. 1 is a kind of screw thread drive-in large diameter bearing installing tool structural schematic diagram of the present invention；
In figure: 1, motor shaft；2, bearing chamber；3, thrust block ring；4, thrust bearing；5, jacking ring；6, plane bearing；7,
Thrust ring；8, dummy shaft.
Specific embodiment
The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.
As shown in Figure 1, a kind of screw thread drive-in imperial palace is through bearing installing tool, including dummy shaft 8, jacking ring 5, thrust ring 7
And plane bearing 6, wherein dummy shaft 8 be steel pipe made of both ends open cylindrical tube structure, outer diameter be slightly less than to
The outer diameter of the motor shaft 1 of bearing is installed, for example, dummy shaft 8, has one section of trapezoidal internal thread on 8 left side head of dummy shaft, with motor
Bearing fastening thread cooperation on axis 1, and dummy shaft 8 can be fixed on motor shaft 1；It is trapezoidal with one section in 8 middle and back of dummy shaft
External screw thread is matched with circular 7 internal screw thread of thrust ring, and generates installation to when 8 head precession of dummy shaft by thrust ring 7
The propulsive force of bearing；Bearing to be installed includes bearing chamber 2, thrust block ring 3 and thrust bearing 4, thrust block ring 3 and thrust
Bearing is integrally formed after being mounted on bearing chamber 2 in bearing 4, dummy shaft 8 will be inserted in after bearing heating to preset temperature, and be advanced into the diameter of axle
Jacking ring 5 is inserted on dummy shaft 8 in position, wherein jacking ring 5 is the circular ring structure that internal diameter is slightly larger than 8 outer diameter of dummy shaft, head
End face is machined with flange, and the inner ring of the flange and bearing matches, and the flange on jacking ring 5 is made only to be in contact with bearing inner race,
It is circumferentially provided with rectangular channel in the tail end face of jacking ring 5, is matched with the rectangular channel of 7 head of thrust ring circumferential direction, and in jacking
Plane bearing 6 is installed in 7 two rectangular channels of ring 5 and thrust ring, the external screw thread using the internal screw thread and dummy shaft 8 of thrust ring 7 is matched
It closes, generates the propulsive force of installation bearing, and installing force is transferred to by bearing inner race by jacking ring 5；On 7 outer cylinder of thrust ring
It is provided with blind hole, thrust ring 7 can be rotated by eave tile wrench.
Claims (8)
1. a kind of screw thread drive-in imperial palace is through bearing installing tool, it is characterised in that: the tool includes dummy shaft (8), jacking ring (5)
And thrust ring (7), wherein dummy shaft (8) is cylindrical tube structure, and head is fixed on motor shaft (1), and bearing passes through dummy shaft
(8) it and covers at the diameter of axle position of motor shaft (1), internal diameter is cased on dummy shaft (8) and is slightly larger than dummy shaft (8) cyclic annular jacking ring (5),
Thrust ring (7) is inserted in dummy shaft (8), and is rotated on dummy shaft (8) external screw thread by thrust ring (7) internal screw thread and generated propulsive force,
And propulsive force is transferred to by bearing by thrust ring (7).
2. a kind of screw thread drive-in imperial palace according to claim 1 is through bearing installing tool, it is characterised in that: the vacation
Head has the bearing fastening thread cooperation on one section of trapezoidal internal thread, with motor shaft (1) on the left of axis (8), and can be by dummy shaft
(8) it is fixed on motor shaft；There is one section of trapezoidal external screw thread in dummy shaft (8) middle and back, with circular thrust ring (7) interior spiral shell
Line matching, and the propulsive force of installation bearing is generated to when dummy shaft (8) head precession by thrust ring (7).
3. a kind of screw thread drive-in imperial palace according to claim 1 is through bearing installing tool, it is characterised in that: the top
It is circular ring structure into ring (5), head end is machined with flange, and the inner ring of the flange and bearing matches, and makes on jacking ring (5)
Flange be only in contact with bearing inner race.
4. a kind of screw thread drive-in imperial palace according to claim 1 is through bearing installing tool, it is characterised in that: the top
Into plane bearing (6) are additionally provided between ring (5) and thrust ring (7), make thrust ring (7) only by axial direction using plane bearing (6)
Thrust is transferred to jacking ring (5).
5. a kind of screw thread drive-in imperial palace according to claim 4 is through bearing installing tool, it is characterised in that: the top
Tail end face into ring (5) is circumferentially provided with rectangular channel, matches with the rectangular channel of thrust ring (7) head circumferential direction, and in jacking
Plane bearing (6) are installed in (7) two rectangular channels of ring (5) and thrust ring.
6. a kind of screw thread drive-in imperial palace according to claim 1 is through bearing installing tool, it is characterised in that: described pushes away
It is provided with blind hole on power ring (7) outer cylinder, thrust ring (7) is rotated using eave tile wrench.
7. a kind of screw thread drive-in imperial palace according to claim 1 is through bearing installing tool, it is characterised in that: the vacation
Axis (8) is both ends open cylindrical tube structure made of steel pipe, and outer diameter is slightly less than the motor shaft (1) of bearing to be installed
Diameter of axle size.
8. a kind of screw thread drive-in imperial palace according to claim 7 is through bearing installing tool, it is characterised in that: the vacation
The outer diameter of axis (8) is 1mm smaller than the diameter of axle of motor shaft (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822242230.5U CN209394604U (en) | 2018-12-29 | 2018-12-29 | Screw thread drive-in large diameter bearing installing tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822242230.5U CN209394604U (en) | 2018-12-29 | 2018-12-29 | Screw thread drive-in large diameter bearing installing tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209394604U true CN209394604U (en) | 2019-09-17 |
Family
ID=67896903
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822242230.5U Active CN209394604U (en) | 2018-12-29 | 2018-12-29 | Screw thread drive-in large diameter bearing installing tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209394604U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114102508A (en) * | 2021-10-25 | 2022-03-01 | 广州豪进摩托车股份有限公司 | Simple crankshaft assembling tool assistive device for motorcycle |
-
2018
- 2018-12-29 CN CN201822242230.5U patent/CN209394604U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114102508A (en) * | 2021-10-25 | 2022-03-01 | 广州豪进摩托车股份有限公司 | Simple crankshaft assembling tool assistive device for motorcycle |
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