CN215200522U - Special device for disassembling and assembling main pump oil seal - Google Patents
Special device for disassembling and assembling main pump oil seal Download PDFInfo
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- CN215200522U CN215200522U CN202120671023.0U CN202120671023U CN215200522U CN 215200522 U CN215200522 U CN 215200522U CN 202120671023 U CN202120671023 U CN 202120671023U CN 215200522 U CN215200522 U CN 215200522U
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Abstract
The utility model discloses a dismounting device suitable for main pump oil seal, which comprises a nut, wherein the nut and a worm wheel are coaxially sleeved together, the worm wheel and a bearing are coaxially sleeved together, the worm wheel is meshed with a worm in a transmission way, and the worm is axially and rigidly fixed in a transmission case; the roller path is embedded in a positioning groove of the transmission case; the floating adjusting plate and the steel ball are fixed with the transmission box into a whole through a fine-tooth screw; the outer conical surface at the upper end of the planetary roller screw is in precise fit connection with the inner conical hole at the lower end surface of the middle shaft; the lower taper sleeve is connected with the planetary roller screw through threads; the screw micrometer is fixedly arranged on a connecting plate, and the connecting plate is fixed on two side surfaces of the transmission case; the wireless pocket camera is arranged in a groove of the floating adjusting plate, the floating adjusting plate is fixedly arranged on the oil seal, and the laser displacement sensor is fixedly arranged on the floating adjusting plate. The beneficial effects of the utility model reside in that: the operation is simple, the practicability is high, the working strength of operators is reduced, the working efficiency is improved, and the maintenance period is shortened.
Description
Technical Field
The utility model belongs to nuclear power overhauls the field, concretely relates to be applicable to main pump oil seal dismouting device.
Background
The assembly precision of the oil seal assembly of the main pump bearing box of the existing nuclear power plant is high, and the original dismounting tool has congenital defects:
1. the self-positioning of the tool adopts the positioning of a jacking lead screw connecting rod and a main shaft protection cone, and the precise positioning and centering can not be provided for oil sealing;
2. the jacking screw rod is adopted to rotate (the positioning base is not fixed), so that the stress eccentricity of the coupling is easily caused during disassembly and assembly;
3. when the device is assembled and disassembled, the output torque is uncontrollable, whether the device is jammed or not can be judged only by experience, and excessive force is easy to apply. Therefore, the phenomenon of jamming often occurs in the process of disassembling the oil seal assembly, and the inner hole of the coupler, the pump shaft and the motor shaft are damaged by pulling.
Therefore, a special tool which is accurate in positioning, self-adjustable and centered, adjustable and controllable in output drawing force needs to be developed, so that damage to an inner hole of a coupler, a pump shaft and the like is avoided, and smooth disassembly of the oil seal assembly can be realized.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a be applicable to main pump oil seal dismouting device, its location is accurate, can self-modulation centering, and output drawing force is adjustable, controllable to can ensure not to cause the injury to shaft coupling hole, pump shaft etc. realize smoothly that oil seal assembly is in the same direction as tearing open.
The technical scheme of the utility model as follows: a device suitable for disassembling and assembling main pump oil seal,
the worm gear and the worm are in meshed transmission connection, and the worm is axially and rigidly fixed in a transmission case;
the roller path is embedded in the positioning groove of the transmission case;
the floating adjusting plate and the steel ball are fixed with the transmission box into a whole through a fine-tooth screw;
the outer conical surface at the upper end of the planetary roller screw is in precise fit connection with the inner conical hole at the lower end surface of the middle shaft;
the lower taper sleeve is connected with the planetary roller screw through threads;
the screw micrometer is fixedly arranged on a connecting plate, and the connecting plate is fixed on two side surfaces of the transmission case;
the wireless pocket camera is arranged in a groove of the floating adjusting plate, the floating adjusting plate is fixedly arranged on the oil seal, and the laser displacement sensor is fixedly arranged on the floating adjusting plate.
The worm wheel, the screw nut and the bearing are axially fixed by the precision nut.
And lower raceway steel balls are uniformly distributed on the circumference of the raceway.
The wireless pocket camera transmits the observation image to the visual handheld receiving device in real time in a wireless mode so as to observe whether the oil seal is inclined or not during installation.
The visual handheld receiving device comprises a mobile phone, a tablet personal computer and a notebook computer.
The laser displacement sensors are 4 groups.
And the measuring head of the spiral micrometer is supported against the lower end face of the oil seal body.
The beneficial effects of the utility model reside in that: the operation is simple, the practicability is high, the working strength of operators is reduced, the working efficiency is improved, and the maintenance period is shortened.
Drawings
Fig. 1 is a schematic view of an oil seal dismounting device suitable for a main pump provided by the present invention;
FIG. 2 is a sectional view taken along line C-C.
In the figure: the device comprises a central shaft 1, fine-tooth screws 2, a conical surface pad 3, a screw upper spacer pad 4, a screw spacer sleeve 5, a connecting plate 6, a raceway 7, a micrometer screw 8, a screw nut 9, a conical sleeve 10, a worm 11, a worm gear 12, a bearing 13, a bearing gland 14, a floating adjusting plate 15, a floating adjusting plate 16, a planetary roller screw 17, a guide sleeve 18, a wireless pocket camera 19, a transmission case 20, a laser displacement sensor 21, a pump shaft 22, a flat key 23, an oil seal 24, a first steel ball 25 and a second steel ball 26.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
The utility model discloses in order to ensure the smooth dismouting of oil seal spare, do not harm shaft coupling hole, pump shaft, motor shaft and for the requirement, adopt the cooperation of big bearing capacity planet roller lead screw and bearing, turn into linear motion with screw and planet roller lead screw's helical motion under the motionless condition of lead screw, last apical force and pulling force down when providing the dismouting of oil seal subassembly.
The oil seal assembly can be accurately positioned and centered by depending on the one-way positioning of the center of the upper shaft, the horizontal displacement compensation and verticality adjustment functions of the device are realized by adopting an upper and lower double-ball raceway mode, the oil seal assembly can be effectively ensured to ascend and descend along the straight line direction, and eccentricity is avoided.
The worm and gear boosting transmission and the operation combination of the adjustable torque wrench can provide controllable and uniform power, and avoid the damage to the matching surface of the related components caused by overlarge stress during the installation or disassembly of equipment.
As shown in fig. 1 and 2, the device for disassembling and assembling the oil seal of the main pump comprises a middle shaft 1, a fine-pitch screw 2, a conical surface pad 3, a nut upper spacer 4, a screw spacer 5, a connecting plate 6, a roller path 7, a micrometer screw 8, a nut 9, a lower conical sleeve 10, a worm 11, a worm wheel 12, a bearing 13, a bearing gland 14, a lower floating adjusting plate 15, a floating adjusting plate 16, a planetary roller screw 17, a guide sleeve 18, a wireless pocket camera 19, a transmission case 20 and a laser displacement sensor 21.
The screw nut 9 and the worm wheel 12 are coaxially sleeved together, the worm wheel 12 and the bearing 13 are coaxially sleeved together, the worm wheel 12, the screw nut 9, the bearing 13 and the like are axially fixed by precision nuts, the worm wheel 12 is in meshed transmission connection with the worm 11, the worm 11 is axially and rigidly fixed in the transmission case 20, the circumferences of the lower raceway steel balls are uniformly distributed on the raceway 7, and the raceway 7 is embedded in a positioning groove of the transmission case; the steel balls of the upper raceway are uniformly distributed on the lower floating adjusting plate 15 in the circumference, and the floating adjusting plate 16 and the steel balls are fixed with the transmission case 20 into a whole through fine-tooth screws 2. The outer conical surface at the upper end of the planetary roller screw 17 is in precise fit connection with the inner conical hole at the lower end surface of the middle shaft 1. The lower cone sleeve 10 is connected with the planetary roller screw 17 through threads. The screw micrometer 8 is fixedly arranged on the connecting plate 6, the connecting plate 6 is fixed on two side surfaces of the transmission case 20, a measuring head of the screw micrometer 8 is propped against the lower end surface of the oil seal body, and the movable ruler part of the screw micrometer 8 is rotated for adjustment during adjustment. The wireless pocket camera 19 is installed in the groove of the floating adjusting plate 16, the floating adjusting plate 16 is fixedly installed on the oil seal, the wireless pocket camera 19 is aligned to the installation position of the flat key, and the wireless pocket camera transmits an observation image to a visual handheld receiving device (such as a mobile phone, a tablet personal computer and a notebook personal computer) in real time in a wireless mode so as to observe whether the oil seal is inclined or not during installation. 4 groups of laser displacement sensors 21 are installed and fixed on the floating adjusting plate 16.
The utility model discloses can realize following function:
1) guiding and positioning: the outer diameter of the guide sleeve is consistent with the inner diameter of the oil seal pump shaft sleeve and is precisely matched together, an inner hole is matched with the middle shaft to form a whole, and the conical surface at the rear end of the middle shaft is designed to be precisely positioned by a conical hole of a top pinhole of the motor pump shaft; meanwhile, the precision matching precision with the matching surface of the motor shaft is ensured. The positioning plate can be effectively ensured to be coaxial with a motor shaft, and an accurate positioning reference is provided for screw installation.
2) Fixing a lead screw: the outer conical surface at the upper end of the screw rod is precisely matched with the inner conical hole at the lower end surface of the middle shaft; meanwhile, a lower taper sleeve at the lower end of the screw rod is in threaded connection with the screw rod, and the lower taper sleeve is positioned and fixed through an inner taper hole of a lower connecting shaft of the main pump shaft. When the screw rod fixing device is used, the lower taper sleeve is rotated to realize rigid fixation of the screw rod. The oil seal is connected with the transmission case and then moves up and down integrally along the screw rod. The problem of coaxiality swing caused by the rotation of the screw rod is avoided;
3) the levelness monitoring function of the oil seal assembly is as follows: the dismounting device design has laser displacement sensor, the circumferencial direction evenly arranges 4 groups, laser displacement sensor rigidity is fixed on the regulating plate that floats, use pump shaft lower extreme face as the detection benchmark, through reading the data on each sensor of contrast, data pass through data line real-time transmission to visual interface, real-time supervision contrast oil seal assembly tear open, the levelness of dress in-process relative to the motor pump, the levelness difference value fine motion adjustment micrometering value according to four groups of check points, make oil seal assembly dismounting process control at the horizontal precision all the time, ensure that oil seal assembly does not receive overload moment damage.
4) Displacement compensation and straightness regulatory function that hangs down: the device design adopts the design of a spherical double-raceway precise ball and a floating adjusting plate, the upper ball is in spherical contact with the floating adjusting plate and a ball retainer, and the micro-motion angle of the floating adjusting plate is adjusted by adjusting a screw micrometer on the side surface of a transmission case so as to realize the self-adjusting function of verticality. The lower plane ball can integrally move on the stress surface along any direction, and the angular displacement compensation is effectively realized.
5) High efficiency and labor saving: the worm gear speed reducing and force increasing mechanism provides rotating power for the planetary screw, so that the input torque can be effectively reduced, and the working strength of operators is reduced. The worm gear and worm device can be manually matched with an adjustable torque wrench for use; the input torque of the electric screwdriver can be adopted, the input torque can be accurately adjusted by the electric screwdriver, key parts such as a coupler inner hole, a pump shaft and a motor shaft are prevented from being damaged, and the safety of the main pump oil sealing device is guaranteed.
6) The moment is controllable: an adjustable torque wrench input interface is designed in front of the worm gear, so that the equipment is prevented from being drawn and damaged due to overload, and data parameters such as the jacking torque required by equipment installation and the pull-down torque required by disassembly can be preset in the debugging process.
7) The disassembly and the assembly are convenient: the device is designed in a modularized way, and only a few modules (a guide positioning module, a planetary roller screw module, a worm and gear module and a floating adjusting module) need to be simply assembled on site. Need not complicated part equipment, also do not have foreign matter risk such as smallclothes drop.
This dismounting device is accurate metalworking part, chooses for use the material processing preparation completion that is fit for on-the-spot operating mode, and concrete equipment step is as follows:
1) the worm wheel is connected with the nut and the bearing
The nut 9 and the worm wheel 12 are coaxially sleeved together, the worm wheel 12 and the bearing 13 are coaxially sleeved together, and the worm wheel 12, the nut 9, the bearing 13 and the like are axially fixed by precision nuts.
2) Worm wheel and worm connection
The worm 11 is axially and rigidly fixed in the transmission case 20, and the worm wheel 12 is in meshed transmission connection with the worm 11.
3) Floating adjusting plate and steel ball adjusting device
The lower raceway steel balls are uniformly distributed on the raceway 7 in the circumference, and the raceway 7 is embedded in a positioning groove of the transmission case; the steel balls of the upper raceway are uniformly distributed on the lower floating adjusting plate 15 in the circumference. The floating adjusting plate 16 and the steel ball are fixed with the transmission case 20 into a whole through the fine-thread screw 2.
4) The planetary roller screw is connected with the middle shaft in a positioning way
The outer conical surface at the upper end of the planetary roller screw 17 is in precise fit connection with the inner conical hole at the lower end surface of the middle shaft 1.
5) The lower taper sleeve is connected with the planetary roller screw
The lower cone sleeve 10 is connected with the planetary roller screw 17 through threads.
6) The screw micrometer is connected with the transmission case
The screw micrometer 8 is fixedly arranged on the connecting plate 6, the connecting plate 6 is fixed on two side surfaces of the transmission case 20, a measuring head of the screw micrometer 8 is propped against the lower end surface of the oil seal body, and the movable ruler part of the screw micrometer 8 is rotated for adjustment during adjustment.
7) Wireless pocket camera connection
The wireless pocket camera 19 is installed in the groove of the floating adjusting plate 16, the floating adjusting plate 16 is fixedly installed on the oil seal, the wireless pocket camera 19 is aligned to the installation position of the flat key, and the wireless pocket camera transmits an observation image to a visual handheld receiving device (such as a mobile phone, a tablet personal computer and a notebook personal computer) in real time in a wireless mode so as to observe whether the oil seal is inclined or not during installation.
8) Laser displacement sensor connection
4 groups of laser displacement sensors 21 are installed and fixed on the floating adjusting plate 16.
Claims (7)
1. The utility model provides a be applicable to main pump oil seal dismouting device which characterized in that:
the worm gear and the worm are in meshed transmission connection, and the worm is axially and rigidly fixed in a transmission case;
the roller path is embedded in the positioning groove of the transmission case;
the floating adjusting plate and the steel ball are fixed with the transmission box into a whole through a fine-tooth screw;
the outer conical surface at the upper end of the planetary roller screw is in precise fit connection with the inner conical hole at the lower end surface of the middle shaft;
the lower taper sleeve is connected with the planetary roller screw through threads;
the screw micrometer is fixedly arranged on a connecting plate, and the connecting plate is fixed on two side surfaces of the transmission case;
the wireless pocket camera is arranged in a groove of the floating adjusting plate, the floating adjusting plate is fixedly arranged on the oil seal, and the laser displacement sensor is fixedly arranged on the floating adjusting plate.
2. The apparatus of claim 1, wherein: the worm wheel, the screw nut and the bearing are axially fixed by the precision nut.
3. The apparatus of claim 1, wherein: and lower raceway steel balls are uniformly distributed on the circumference of the raceway.
4. The apparatus of claim 1, wherein: the wireless pocket camera transmits the observation image to the visual handheld receiving device in real time in a wireless mode so as to observe whether the oil seal is inclined or not during installation.
5. The apparatus of claim 4, wherein: the visual handheld receiving device comprises a mobile phone, a tablet personal computer and a notebook computer.
6. The apparatus of claim 1, wherein: the laser displacement sensors are 4 groups.
7. The apparatus of claim 1, wherein: and the measuring head of the spiral micrometer is supported against the lower end face of the oil seal body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120671023.0U CN215200522U (en) | 2021-04-01 | 2021-04-01 | Special device for disassembling and assembling main pump oil seal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120671023.0U CN215200522U (en) | 2021-04-01 | 2021-04-01 | Special device for disassembling and assembling main pump oil seal |
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| Publication Number | Publication Date |
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| CN215200522U true CN215200522U (en) | 2021-12-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202120671023.0U Active CN215200522U (en) | 2021-04-01 | 2021-04-01 | Special device for disassembling and assembling main pump oil seal |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117109828A (en) * | 2023-08-24 | 2023-11-24 | 连云港金辰实业有限公司 | Auxiliary monitoring device for dismounting and mounting main pump sealing assembly and application method |
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2021
- 2021-04-01 CN CN202120671023.0U patent/CN215200522U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117109828A (en) * | 2023-08-24 | 2023-11-24 | 连云港金辰实业有限公司 | Auxiliary monitoring device for dismounting and mounting main pump sealing assembly and application method |
| CN117109828B (en) * | 2023-08-24 | 2024-02-20 | 连云港金辰实业有限公司 | Auxiliary monitoring device for dismounting and mounting main pump sealing assembly and application method |
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