CN215201796U - Special puller for hydroelectric machine for nuclear-grade safety plant - Google Patents
Special puller for hydroelectric machine for nuclear-grade safety plant Download PDFInfo
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- CN215201796U CN215201796U CN202120671072.4U CN202120671072U CN215201796U CN 215201796 U CN215201796 U CN 215201796U CN 202120671072 U CN202120671072 U CN 202120671072U CN 215201796 U CN215201796 U CN 215201796U
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- crane
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- safety plant
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Abstract
The utility model discloses a nuclear level safety plant is with special horse drawn of hydroelectricity machine, including the lower guideway link, the lower part of lower guideway link is equipped with back gyro wheel support and preceding gyro wheel frame respectively, the both sides of back gyro wheel support are equipped with end face bearing, still be equipped with the roller shaft on the back gyro wheel support, the centre of lower guideway link is equipped with the jack, the centre of first crane is connected to the jack, be connected with the crane connecting axle between first crane and the second crane, first crane and second crane and the cooperation of lower guideway link, lift platform is connected to the other end, lift platform upper portion is equipped with hydraulic power unit, still be equipped with the hydro-cylinder locating plate, hydraulic power unit is connected with hydraulic power unit, the one end of two pull rods is connected with horizontal, the other end and the chuck of two pull rods are connected. The beneficial effects are that: the full stroke pulling force axis keeps the level, prevents that the shaft coupling atress skew from galling the axle, and sufficient drawing stroke avoids midway jackscrew to continue, effectively improves the disintegration efficiency of motor.
Description
Technical Field
The utility model belongs to power station operation maintenance field, concretely relates to nuclear level safety plant draws horse with special use of hydroelectric machine.
Background
In the shaft coupling dismantling process of the nuclear power station motor preventive disassembly and overhaul work, shaft necks of an original motor and a spare part motor are roughened successively. After the analysis, the main reason for the occurrence of the situation is caused by the mismatching of the tool and the equipment in the process of removing the coupler by using the existing jack and puller.
The use of existing tool combinations to effect removal of SEC motor couplings presents two problems:
the effective stroke of the puller is short, the matching length of the coupler is 210mm, the effective stroke of the puller is required to be at least equal to 210mm to ensure that the puller can be detached at one time, once the effective stroke is less than 210mm, the jack is stopped when reaching the limit to replace a sizing block, if the stroke of the jack with proper tonnage is too small, the detaching process needs to be adjusted for many times, two problems are caused by each adjustment, the stressed axis is easy to deviate in the adjusting process of a first person, the detaching time is increased by the second repeated adjustment, the coupler after being heated transfers heat to the shaft more, the coupler and the shaft are tightly embraced, and the shaft neck is easy to damage.
The coupler is longer, the longer the coupler is, the more the puller and the accessories are detached, the more the coupler is far away from the shaft head to move, the larger the moment generated by the jack and the pulling accessories is, the easier the force-bearing axis is to deviate, the jack can only be hoisted by matching with a traveling crane in order to ensure that the force-bearing direction is kept horizontal, but the jack still cannot be ensured to be in a horizontal state all the time.
Before the accident that people are injured due to breakage of the puller bolt occurs in the disassembly of the 380V small motor, the pulling force of a jack used for disassembling the SEC motor coupling is far greater than that of a jack used in the small motor, and therefore the potential risk of mechanical injury to people is high.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a nuclear level safety plant is with special horse that draws of water motor, it can use operating condition as the benchmark, guarantees the safety of personnel and equipment, improves the disintegration efficiency of motor simultaneously.
The technical scheme of the utility model as follows: the special puller for the hydroelectric machine for the nuclear-grade safety plant comprises a lower guide rail connecting frame, the lower portion of the lower guide rail connecting frame is provided with a rear roller support and a front roller support respectively, two sides of the rear roller support are provided with end face bearings, roller shafts are further arranged on the rear roller support, a jack is arranged in the middle of the lower guide rail connecting frame, one end of the jack is connected with the middle of a first lifting frame, a lifting frame connecting shaft is connected between the first lifting frame and a second lifting frame, one ends of the first lifting frame and the second lifting frame are matched with the lower guide rail connecting frame, a lifting platform is connected with the other ends of the first lifting frame and the second lifting frame, a hydraulic pump station is arranged on the upper portion of the lifting platform, an oil cylinder positioning plate is arranged at one end of the upper portion of the lifting platform, the hydraulic pump station is connected with the hydraulic jack, one ends of two pull rods are connected with a cross arm, a second gasket is arranged on the pull rods, and the other ends of the two pull rods are connected with a chuck.
The middle of the chuck is fixed through a hexagon head bolt and a hexagon nut.
The roller shaft is sleeved with a first spacer bush and a first gasket, and a small wheel is sleeved outside the first spacer bush.
And end face bearings are arranged on two sides of the rear roller wheel bracket through second nuts.
And small wheels are also respectively arranged at two ends of the front roller frame.
The roller shaft is fixed on the rear roller bracket through a first nut.
The lower guide rail connecting frame is fixedly connected with a pushing arm frame through an inner hexagonal flat end fastening screw.
One end of the first lifting frame is fixedly connected to the lower guide rail connecting frame through an inner hexagonal socket head cap screw and a lifting frame positioning shaft.
One end of the second lifting frame is connected with a second spacer bush, the second spacer bush is sleeved on the first bearing positioning shaft, and the bearing is sleeved on the first bearing positioning shaft.
The beneficial effects of the utility model reside in that: the full stroke pulling force axis keeps the level, prevents that the shaft coupling atress skew from galling the axle, and sufficient drawing stroke avoids midway jackscrew to continue, effectively improves the disintegration efficiency of motor.
Drawings
Fig. 1 is a front view of a special rama for a nuclear-level safety plant hydroelectric machine provided by the present invention;
fig. 2 is a right side view of the nuclear-level safety plant hydroelectric machine provided by the present invention;
fig. 3 is a top view of the special puller for the nuclear-grade safety plant hydroelectric machine provided by the present invention;
fig. 4 is a bottom view of the special puller for the nuclear-grade safety plant hydroelectric machine provided by the utility model.
In the figure, 1 a first nut, 2 a lower guide rail connecting frame, 3 an inner hexagonal flat end set screw, 4 small wheels, 5 roller shafts, 6 a first spacer bush, 7 a first gasket, 8 a rear roller bracket, 9 an end face bearing, 10 a second nut, 11 a front roller frame, 12 a first lifting frame, 13 a second lifting frame, 14 a lifting platform, 15 a first oil cylinder positioning plate, 16 a hydraulic jack, 17 a cross arm, 18 a hydraulic pump station, 19 a pushing hand frame, 20 a jack, 21 a pin shaft, 22 a cotter pin, 23 a lifting frame connecting shaft, 24 a hexagonal nut, 25 a hexagonal bolt, 26 a chuck, 27 a pull rod, 28 a second gasket, 31 a bearing, 32 an inner hexagonal socket head screw, 33 a lifting frame positioning shaft, 34 a first bearing positioning shaft, 35 a second spacer bush, 36 a second bearing positioning shaft, 37 a spacer bush, 38 a second oil cylinder positioning plate, 39 an oil cylinder fixing plate and 40 an oil cylinder fixing screw.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1, the special puller for the nuclear safety plant hydroelectric machine comprises a lower guide rail connecting frame 2, wherein a rear roller bracket 8 and a front roller bracket 11 are respectively installed at the lower part of the lower guide rail connecting frame 2, end face bearings 9 are installed at two sides of the rear roller bracket 8 through second nuts 10, a roller shaft 5 is further arranged on the rear roller bracket 8, the roller shaft 5 is fixed on the rear roller bracket 8 through a first nut 1, a first spacer 6 and a first gasket 7 are sleeved on the roller shaft 5, a small wheel 4 is sleeved outside the first spacer 6, small wheels are respectively installed at two ends of the front roller bracket 11, and a pushing handle frame 19 is fixedly connected to the lower guide rail connecting frame 2 through an inner hexagonal flat end fastening screw 3; as shown in fig. 2, a jack 20 is arranged in the middle of the lower guide rail connecting frame 2, one end of the jack 20 is connected with the middle of the first lifting frame 12 through a pin 21 and a cotter pin 22, a lifting frame connecting shaft 23 is connected between the first lifting frame 12 and the second lifting frame 13, one ends of the first lifting frame 12 and the second lifting frame 13 are matched with the lower guide rail connecting frame 2, the other ends of the first lifting frame 12 and the second lifting frame 13 are connected with the lifting platform 14, one end of the upper part of the lifting platform 14 is provided with a hydraulic pump station 18, one end of the upper part of the lifting platform 14 is provided with a cylinder positioning plate 15, the hydraulic pump station 18 is connected with the hydraulic jack 16, one end of the hydraulic jack 16 is freely arranged in an arc-shaped groove of the first cylinder positioning plate 15, the bottom of the other end of the hydraulic jack 16 is connected with the upper part of a cylinder fixing bolt 40, and the lower part of the cylinder fixing plate 39 is connected with the second cylinder positioning plate 38 through two cylinder fixing bolts 40.
One end of each of the two pull rods 27 is connected with a cross arm 17, the pull rods 27 and the cross arm 17 are provided with second washers 28, the other ends of the two pull rods 27 are connected with chucks 26, and the middles of the chucks 26 are fixed through hexagonal bolts 25 and hexagonal nuts 24.
As shown in fig. 3, one end of the first lifting frame 12 is fixedly connected to the lower guide rail connecting frame 2 through a hexagon socket head cap screw 32 and a lifting frame positioning shaft 33, one end of the second lifting frame 13 is connected to a second spacer 35, the second spacer 35 is sleeved on a first bearing positioning shaft 34, a bearing 31 is sleeved on the first bearing positioning shaft 34, and the second lifting frame 13 can slide on the lower guide rail connecting frame 2 through the connection.
The utility model discloses mainly used SEC motor disintegration process shaft coupling and top bearing demolish, concrete implementation method as follows:
1. after the function of the puller is checked to be normal, the lifting platform is started to enable the center of a screw rod of a pressing jack 16 to be flush with the center of a motor shaft;
2. the chuck 26 is removed, every two chucks on the rear side of the motor coupler are folded, and the two chucks are fixed by the hexagon bolts 25;
3. the pull rod 27 is connected with the chuck 26, the hydraulic jack is started to pressurize properly, the center of the screw rod is consistent with the center of the shaft, and the dismantling operation is started after the determination.
Claims (9)
1. The special puller of hydroelectric machine for nuclear safety plant is characterized in that: including the lower guideway link, the lower part of lower guideway link be equipped with back gyro wheel support and preceding gyro wheel frame respectively, the both sides of back gyro wheel support are equipped with end bearing, still be equipped with the roller shaft on the back gyro wheel support, the centre of lower guideway link is equipped with the jack, the centre of first crane is connected to the one end of jack, be connected with the crane connecting axle between first crane and the second crane, the one end and the lower guideway link cooperation of first crane and second crane, lift platform is connected to the other end of first crane and second crane, lift platform upper portion is equipped with hydraulic power unit, the one end on lift platform upper portion is equipped with the hydro-cylinder locating plate, hydraulic power unit is connected with hydraulic jack, the one end of two pull rods is connected with violently, the pull rod is equipped with the second packing ring with the xarm, the other end and the chuck of two pull rods are connected.
2. The special puller for the nuclear-grade safety plant water motor according to claim 1, is characterized in that: the middle of the chuck is fixed through a hexagon head bolt and a hexagon nut.
3. The special puller for the nuclear-grade safety plant water motor according to claim 1, is characterized in that: the roller shaft is sleeved with a first spacer bush and a first gasket, and a small wheel is sleeved outside the first spacer bush.
4. The special puller for the nuclear-grade safety plant water motor according to claim 1, is characterized in that: and end face bearings are arranged on two sides of the rear roller wheel bracket through second nuts.
5. The special puller for the nuclear-grade safety plant water motor according to claim 1, is characterized in that: and small wheels are also respectively arranged at two ends of the front roller frame.
6. The special puller for the nuclear-grade safety plant water motor according to claim 1, is characterized in that: the roller shaft is fixed on the rear roller bracket through a first nut.
7. The special puller for the nuclear-grade safety plant water motor according to claim 1, is characterized in that: the lower guide rail connecting frame is fixedly connected with a pushing arm frame through an inner hexagonal flat end fastening screw.
8. The special puller for the nuclear-grade safety plant water motor according to claim 1, is characterized in that: one end of the first lifting frame is fixedly connected to the lower guide rail connecting frame through an inner hexagonal socket head cap screw and a lifting frame positioning shaft.
9. The special puller for the nuclear-grade safety plant water motor according to claim 1, is characterized in that: one end of the second lifting frame is connected with a second spacer bush, the second spacer bush is sleeved on the first bearing positioning shaft, and the bearing is sleeved on the first bearing positioning shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120671072.4U CN215201796U (en) | 2021-04-01 | 2021-04-01 | Special puller for hydroelectric machine for nuclear-grade safety plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120671072.4U CN215201796U (en) | 2021-04-01 | 2021-04-01 | Special puller for hydroelectric machine for nuclear-grade safety plant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215201796U true CN215201796U (en) | 2021-12-17 |
Family
ID=79445067
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120671072.4U Active CN215201796U (en) | 2021-04-01 | 2021-04-01 | Special puller for hydroelectric machine for nuclear-grade safety plant |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215201796U (en) |
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2021
- 2021-04-01 CN CN202120671072.4U patent/CN215201796U/en active Active
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