CN211759721U - Hoisting device in groups of nuclear power pressure vessel kingbolt stretcher - Google Patents
Hoisting device in groups of nuclear power pressure vessel kingbolt stretcher Download PDFInfo
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- CN211759721U CN211759721U CN202020173012.5U CN202020173012U CN211759721U CN 211759721 U CN211759721 U CN 211759721U CN 202020173012 U CN202020173012 U CN 202020173012U CN 211759721 U CN211759721 U CN 211759721U
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Abstract
A group hoisting device of a main bolt stretcher of a nuclear power pressure vessel comprises a base, a hanging beam swing mechanism, a hanging beam lifting mechanism, an annular hanging beam and a control system; the base can be connected with a top cover of the nuclear power pressure container through supporting legs, the hanging beam rotating mechanism is installed on the base through a bearing, the hanging beam lifting mechanism is installed on the hanging beam rotating mechanism, the middle of the annular hanging beam is installed at the upper end of the hanging beam lifting mechanism, the control system is a computer control system, a control program is arranged in the computer, and the control system and the hydraulic station are placed on a platform of the hanging beam rotating mechanism. The beneficial effects are that: the integration level is high, the operation is convenient, and the product quality is effectively improved; the device replaces the original lifting and rotating operation of a stretcher needing to be matched with a crane, reduces the collision risk of the main bolt, and reduces the resource occupation of the overhead travelling crane; the length of the hydraulic and electric pipelines is effectively shortened, the hydraulic and electric pipelines are prevented from being dragged, and the stability of the equipment is improved.
Description
Technical Field
The utility model belongs to the technical field of mechanical frock, especially, relate to hoisting device in groups of nuclear power pressure vessel kingbolt stretcher for lift by crane monomer bolt stretcher in groups when civil nuclear reactor pressure vessel kingbolt pretension and uninstallation.
Background
Tens of bolts uniformly distributed along the circumferential direction of a top cover need to be pre-tightened and stretched during the hydrostatic test of the pressure vessel of the civil nuclear reactor. In the prior art, 3-4 single bolt stretching machines are generally adopted for stretching bolts. The defects of the prior art are as follows: in order to meet the requirement of stretching all the bolts, the bolt stretcher needs to be lifted in a mode of a crane and an integral annular lifting appliance. The bolt stretcher needs to be frequently lifted in the whole bolt stretching process, and the overall hanger is very easy to carry out unbalance loading in the lifting process, so that the main bolt is collided, and the product quality is influenced; in addition, the pre-tightening process of the main bolt is long, the occupied time of the crane is long, and the service efficiency of the crane is influenced.
SUMMERY OF THE UTILITY MODEL
The utility model aims at: the utility model provides a hoisting device in groups of nuclear power pressure vessel kingbolt elongator, overcomes prior art's not enough.
The technical scheme of the utility model is that: a group hoisting device of a main bolt stretcher of a nuclear power pressure vessel comprises a base, a hanging beam swing mechanism, a hanging beam lifting mechanism, a cross-shaped hanging beam and a control system; the method is characterized in that:
the base is a circular plate-shaped structural member, three supporting legs are arranged below the circular plate-shaped structural member, the lower end of each supporting leg is a supporting leg support with a fork-shaped structure, and the supporting leg supports are fixedly connected with top cover lifting lugs on a top cover of the nuclear power pressure vessel through top cover pin shafts and screws.
The suspension beam slewing mechanism comprises a transition support, a supporting platform, a large gear, a rolling bearing and a motor driving mechanism, wherein the transition support is a short shaft with a circular supporting table arranged in the middle, the upper end surface of the circular supporting table is a surface matched with the supporting platform, the lower end surface of the circular supporting table is a matching surface with the rolling bearing, and the lower section shaft of the transition support circular supporting table is arranged in a central hole of the large gear; the supporting platform is a circular platform and is arranged on the upper end surface of the circular transitional supporting platform, and the lower section shaft of the circular transitional supporting platform is arranged in the central hole of the large gear; the large gear is fixed on the base through a screw, a bearing mounting hole is formed in the upper plane of the large gear, and the rolling bearing is mounted in the bearing mounting hole in the large gear and matched with the lower end face of the transition support circular supporting table; the motor driving mechanism comprises a motor, a speed reducer and a driving gear, the motor is installed on the supporting platform and is connected with the speed reducer through a coupler, the driving gear is installed on an output shaft of the speed reducer, and the driving gear is meshed with the large gear.
The lifting beam lifting mechanism comprises a supporting cylinder, a worm gear lead screw lifter and a guide rod, wherein the supporting cylinder is a cylinder, flanges are arranged at two ends of the cylinder, the flange at the bottom of the supporting cylinder is connected to a circular table of the transitional support of the lifting beam slewing mechanism through a bolt, and a guide hole is formed in the flange at the upper part of the supporting cylinder; the worm gear lead screw lifter is arranged on a flange at the upper part of the supporting cylinder, and the lower end of a lead screw of the worm gear lead screw lifter extends into a center counter bore above a short shaft at the upper section of a transitional supporting round table of the swing mechanism of the hanging beam; the upper end of the guide rod is arranged on the cross-shaped bracket of the cross-shaped hanging beam, and the lower end of the guide rod extends into the guide hole of the flange at the upper part of the supporting cylinder.
The cross-shaped hanging beam comprises a cross-shaped bracket and a stretcher hanging plate. The center of the cross-shaped support is provided with a circular supporting block, four rectangular supporting frames are uniformly distributed along the circumferential direction of the circular supporting block, the four rectangular supporting frames are arranged in a cross shape, and the lower surface of the circular supporting block at the center of the cross-shaped support is fixedly connected with a flange at the upper part of a worm screw lifter lead screw of a lifting beam lifting mechanism through a bolt; the stretcher hanging plates are respectively connected below the ends of the four rectangular supporting frames through shackles.
The control system comprises a motor driving system of the hanging beam swing mechanism and a motor driving system of the worm gear lead screw lifter of the hanging beam lifting mechanism, the control system is electrically connected with the motor driving system of the hanging beam swing mechanism and the motor driving system of the worm gear lead screw lifter of the hanging beam lifting mechanism respectively, the control system is controlled by a computer, and a control program is arranged in the computer.
The invention relates to a group hoisting device of a nuclear power pressure vessel main bolt stretcher, which is characterized in that: and a travel limit switch for controlling the travel of the lifting mechanism is arranged on the guide rod.
The invention relates to a group hoisting device of a nuclear power pressure vessel main bolt stretcher, which is characterized in that: and the support platform of the hanging beam slewing mechanism is also provided with a stretcher hydraulic station, and the stretcher hydraulic station is connected with the main bolt stretcher through a hydraulic electric pipeline.
The utility model discloses a use method is:
1. the device is hoisted to the top cover of the nuclear power pressure vessel through a crane, and the supporting legs of the device and the lifting lugs of the top cover are fixedly connected through the pins and the screws of the top cover pin;
2. hoisting four stretching machines onto 4 symmetrical main bolts on a top cover of the nuclear power pressure vessel through a crane;
3. the device of the utility model is connected with a power supply, and the control system controls the rotation of the motor of the swing mechanism to drive the cross-shaped hanging beam to move above the bolt stretcher;
4. connecting a bolt stretcher with a cross-shaped hanging beam through a hanging plate, connecting the bolt stretcher with a hydraulic station and a control system through a hydraulic electric pipeline, and starting bolt stretching;
5. after the group of bolts is stretched, the hydraulic station and the control system are disconnected from the bolt stretcher, and the control system controls the lifting mechanism of the lifting beam to lift until the bolt stretcher is separated from the main bolt;
6. the control system controls the hanging beam slewing mechanism to rotate to the position of the next group of main bolts to be stretched, the control system controls the hanging beam lifting mechanism to descend until the bolt stretching machine is placed on the other group of four symmetrical main bolts on the top cover of the nuclear power pressure vessel, and the hydraulic electric pipeline connects the bolt stretching machine with the hydraulic station and the control system to start stretching of a new group of bolts;
7. and (5) repeating the step (5), and sequentially performing subsequent main bolt stretching operation until all the main bolts are stretched.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the integration level is high, the operation is convenient, and the product quality is effectively improved;
2. the hanging beam swing mechanism and the hanging beam lifting mechanism of the device replace the original operation of lifting and rotating of a stretcher needing to be matched with a crane, the risk of main bolt collision is reduced, and the overhead traveling crane resource occupation is reduced;
3. the hydraulic station and the control system are placed on the hanging beam rotating mechanism platform, so that the lengths of hydraulic and electric pipelines are effectively shortened, the hydraulic and electric pipelines are prevented from being dragged in the hoisting and rotating processes of the stretcher, and the stability of the device is improved.
Drawings
FIG. 1 is the utility model discloses a hoisting device structure elevation in groups of nuclear power pressure vessel kingbolt stretcher.
Fig. 2 is a top view of fig. 1.
FIG. 3 is a partial view of a swing mechanism for a lifting beam of a gang hoist for a nuclear power pressure vessel kingbolt tensioner.
The device comprises a base 1, a base 2, a hanging beam rotating mechanism 3, a hanging beam lifting mechanism 4, a cross-shaped hanging beam 5, a guide limiting rod 6, a worm gear lead screw lifter 7, a stretcher hanging plate 8, a motor driving mechanism 9, a large gear 10, a rolling bearing 11, a supporting leg 12, a top cover pin shaft screw 13, a bolt stretcher 14, a main bolt 15, a top cover 16, a control system 17, a hydraulic electric pipeline 18, a stretcher hydraulic station 19, a transition support 20, a support platform 21 and a support cylinder.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
The group hoisting device of the nuclear power pressure vessel main bolt stretcher comprises a base 1, a hanging beam slewing mechanism 2, a hanging beam lifting mechanism 3, a cross-shaped hanging beam 4 and a control system 16; the base 1 is a circular plate-shaped structural member, three supporting legs 11 are arranged below the circular plate-shaped structural member, the lower end of each supporting leg 11 is a fork-shaped supporting leg support, and the supporting leg supports are fixedly connected with top cover lifting lugs on a top cover 15 of the nuclear power pressure vessel through top cover pin shaft screws 12.
The hanging beam slewing mechanism 2 comprises a transition support 19, a support platform 20, a large gear 9 and a motor driving mechanism 8. The transition support 19 is a short shaft with a circular support table in the middle, the upper end face of the circular support table is a face matched with the support platform, the lower end face of the circular support table is a matching face with the rolling bearing, and the lower shaft of the circular support table of the transition support 19 is arranged in a central hole of the large gear 9; the supporting platform 20 is a circular platform and is arranged on the upper end surface of the circular supporting platform of the transition support 19; the gearwheel 9 is fixed on the base 1 by means of screws. A bearing mounting hole is designed on the upper plane of the large gear 9, a rolling bearing 10 is mounted in the bearing mounting hole of the large gear 9, and the rolling bearing 10 is matched with the lower end face of the circular supporting table of the transition support 19; the motor driving mechanism 8 comprises a motor, a speed reducer and a driving gear, the motor is arranged on the supporting platform 20, the motor is connected with the speed reducer through a coupler, the driving gear is arranged on an output shaft of the speed reducer, the driving gear is meshed with the large gear 9, a stretcher hydraulic station 18 is further arranged on the supporting platform 20, and the stretcher hydraulic station is connected with the main bolt stretcher 13 through a hydraulic electric pipeline 17;
the lifting beam lifting mechanism 3 comprises a supporting cylinder 21, a worm gear lead screw lifter 6 and a guide rod 5, the supporting cylinder 21 is a cylinder, flanges are arranged at two ends of the cylinder, the flange at the bottom of the supporting cylinder 21 is connected to a round table of a transition support of the lifting beam swing mechanism 2 through a bolt, a guide hole is formed in the upper flange, the worm gear lead screw lifter 6 is installed on the upper flange of the supporting cylinder 21, the lower end of a lead screw of the worm gear lead screw lifter 6 extends into a central sunken hole in the upper section of a short shaft of the transition support round table of the lifting beam swing mechanism, the upper end of the guide rod 5 is installed on a cross-shaped bracket of the cross-shaped lifting beam 4, the lower end of the guide rod 5 extends into the guide hole of the upper flange of;
the cross-shaped hanging beam 4 comprises a cross-shaped support and a stretcher hanging plate 7, wherein the center of the cross-shaped support is a circular supporting block, four rectangular supporting frames are uniformly distributed along the circumferential direction of the circular supporting block, the four rectangular supporting frames are arranged in a cross shape, the lower surface of the circular supporting block at the center of the cross-shaped support is fixedly connected with a flange at the upper part of a worm screw lifting mechanism 3 worm screw rod of a hanging beam lifting mechanism through a bolt, and the stretcher hanging plate 7 is respectively connected to the lower surfaces of the end parts of the four rectangular supporting;
the control system 16 comprises a motor driving system of the swing mechanism of the hanging beam and a motor driving system of the worm screw lifter of the lifting mechanism of the hanging beam, the control system is respectively electrically connected with the motor driving system of the swing mechanism of the hanging beam and the motor driving system of the worm screw lifter of the lifting mechanism of the hanging beam, the control system is controlled by a computer, and a control program is arranged in the computer.
The utility model discloses a use method as follows:
1. the device is hoisted to a top cover 15 of the nuclear power pressure vessel by a crane, and the supporting legs 11 of the device and the lifting lugs of the top cover are fixedly connected by top cover pin shaft screws 12;
2. hoisting four stretching machines onto four symmetrical main bolts on a top cover 15 of the nuclear power pressure vessel through a crane;
3. the device of the utility model is connected with a power supply, and the control system 16 controls the rotation mechanism motor to rotate, so as to drive the cross-shaped hanging beam 4 to move to the upper part of the bolt stretcher;
4. connecting a bolt stretcher with the cross-shaped hanging beam 4 through a stretcher hanging plate 7, connecting the bolt stretcher with a hydraulic station 18 and a control system 16 through a hydraulic electric pipeline 17, and starting bolt stretching;
5. after the group of bolts is stretched, the control system controls the lifting mechanism 3 of the hanging beam to lift until the bolt stretcher is separated from the main bolt;
6. the control system 16 controls the hanging beam slewing mechanism 2 to rotate to the position of the next group of main bolts to be stretched, the control system 16 controls the hanging beam lifting mechanism 3 to descend until the bolt stretching machine is placed on the other group of four symmetrical main bolts on the top cover of the nuclear power pressure vessel, and a new group of bolts begins to be stretched;
7. and (5) repeating the step (5), and sequentially performing subsequent main bolt stretching operation until all the main bolts are stretched.
Claims (3)
1. A group hoisting device of a main bolt stretcher of a nuclear power pressure vessel comprises a base (1), a hanging beam slewing mechanism (2), a hanging beam lifting mechanism (3), a cross-shaped hanging beam (4) and a control system (16); the method is characterized in that:
the base (1) is a circular plate-shaped structural member, three support legs (11) are arranged below the circular plate-shaped structural member, the lower end of each support leg (11) is a support leg support with a fork-shaped structure, and the support leg support is fixedly connected with a top cover lifting lug on a top cover (15) of the nuclear power pressure vessel through a top cover pin shaft screw (12);
the suspension beam slewing mechanism (2) comprises a transition support (19), a support platform (20), a large gear (9) and a motor driving mechanism (8), wherein the transition support (19) is a short shaft with a circular support platform in the middle, the upper end surface of the circular support platform is a surface matched with the support platform, the lower end surface of the circular support platform is a matching surface with a rolling bearing, and the lower section shaft of the circular support platform of the transition support (19) is arranged in a central hole of the large gear (9); the supporting platform (20) is a circular table and is arranged on the upper end surface of the circular supporting table of the transition support; the large gear (9) is fixed on the base (1) through a screw, a bearing mounting hole is formed in the upper plane of the large gear (9), and the rolling bearing (10) is mounted in the bearing mounting hole in the large gear (9) and matched with the lower end face of the circular supporting table of the transition support (19); the motor driving mechanism (8) comprises a motor, a speed reducer and a driving gear, the motor is installed on the supporting platform (20), the motor is connected with the speed reducer through a coupler, the driving gear is installed on an output shaft of the speed reducer, and the driving gear is meshed with the large gear (9);
the lifting beam lifting mechanism (3) comprises a supporting cylinder (21), a worm gear lead screw lifter (6) and a guide rod (5), wherein the supporting cylinder (21) is a cylinder, flanges are arranged at two ends of the cylinder, a flange at the bottom of the supporting cylinder (21) is connected to a circular table of a transitional support of the lifting beam slewing mechanism through a bolt, a guide hole is formed in an upper flange, the worm gear lead screw lifter (6) is installed on the flange at the upper part of the supporting cylinder (21), the lower end of a lead screw of the worm gear lead screw lifter (6) extends into a central counter bore above a short shaft at the upper section of the circular supporting table of the transitional support of the lifting beam slewing mechanism, the upper end of the guide rod (5) is installed on a cross-shaped support of a cross-shaped lifting beam (4), and the lower end of the guide rod (5);
the cross-shaped hanging beam (4) comprises a cross-shaped support and a stretcher hanging plate (7), wherein the center of the cross-shaped support is a circular supporting block, four rectangular supporting frames are uniformly distributed along the circumferential direction of the circular supporting block, the four rectangular supporting frames are arranged in a cross shape, the lower surface of the circular supporting block at the center of the cross-shaped support is fixedly connected with a flange at the upper part of a worm screw lifting mechanism worm screw of a hanging beam lifting mechanism through a bolt, and the stretcher hanging plate (7) is respectively connected to the lower surfaces of the end parts of the four rectangular supporting frames through shackle;
the control system (16) comprises a motor driving system of the hanging beam slewing mechanism and a motor driving system of the worm gear lead screw lifter of the hanging beam lifting mechanism, the control system is respectively electrically connected with the motor driving system of the hanging beam slewing mechanism and the motor driving system of the worm gear lead screw lifter of the hanging beam lifting mechanism, the control system is controlled by a computer, and a control program is arranged in the computer.
2. The group hoisting device of the nuclear power pressure vessel main bolt stretcher of claim 1, characterized in that: and a travel limit switch for controlling the travel of the lifting mechanism is arranged on the guide rod (5).
3. The group hoisting device of the nuclear power pressure vessel main bolt stretcher of claim 2 is characterized in that: and a stretcher hydraulic station (18) is also arranged on the hanging beam slewing mechanism supporting platform (20), and is connected with the main bolt stretcher through a hydraulic electric pipeline (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020173012.5U CN211759721U (en) | 2020-02-17 | 2020-02-17 | Hoisting device in groups of nuclear power pressure vessel kingbolt stretcher |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020173012.5U CN211759721U (en) | 2020-02-17 | 2020-02-17 | Hoisting device in groups of nuclear power pressure vessel kingbolt stretcher |
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| Publication Number | Publication Date |
|---|---|
| CN211759721U true CN211759721U (en) | 2020-10-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202020173012.5U Active CN211759721U (en) | 2020-02-17 | 2020-02-17 | Hoisting device in groups of nuclear power pressure vessel kingbolt stretcher |
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| CN (1) | CN211759721U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114290044A (en) * | 2021-12-31 | 2022-04-08 | 邵阳市达力电源实业有限公司 | Method and device for automatically screwing and disassembling flange cover bolt |
-
2020
- 2020-02-17 CN CN202020173012.5U patent/CN211759721U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114290044A (en) * | 2021-12-31 | 2022-04-08 | 邵阳市达力电源实业有限公司 | Method and device for automatically screwing and disassembling flange cover bolt |
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