CN112975363A - Nuclear power plant's radials surrounding subassembly bolt demolishs device - Google Patents
Nuclear power plant's radials surrounding subassembly bolt demolishs device Download PDFInfo
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- CN112975363A CN112975363A CN202110159419.1A CN202110159419A CN112975363A CN 112975363 A CN112975363 A CN 112975363A CN 202110159419 A CN202110159419 A CN 202110159419A CN 112975363 A CN112975363 A CN 112975363A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
- B23P19/04—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for assembling or disassembling parts
- B23P19/06—Screw or nut setting or loosening machines
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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Abstract
The invention discloses a nuclear power plant spoke plate assembly bolt dismounting device, which comprises: the supporting base can be arranged on the spoke plate and is provided with a circular track; the carrying platform is arranged on the supporting base and can move along a circular track; the rotary platform is fixedly arranged on the carrying platform and can rotate 360 degrees relative to the carrying platform; the XYY double-shaft triple movement system is fixedly arranged on the rotary platform and can freely move in the XY direction; and the boring machine is arranged on the XYY double-shaft triple movement system and can move along with the XYY double-shaft triple movement system, and axially feeds and circumferentially rotates along the bolt hole. Compared with the prior art, the nuclear power plant spoke plate assembly bolt dismantling device can dismantle the spoke plate connecting bolts at the same height by matching the carrying platform and the rotating platform and hoisting in place at one time, and can execute the operations of carrying platform rotating in place, rotating platform direction adjustment and boring machine tool operation through the monitoring video, so that unmanned remote control operation under a strong radiation environment is realized.
Description
Technical Field
The invention belongs to the technical field of nuclear power, and particularly relates to a device for dismounting bolts of a nuclear power plant spoke plate assembly.
Background
The nuclear power plant reactor internal component is an important component of a nuclear power plant reactor internal component, is arranged on the outer side of a reactor core fuel component, surrounds the reactor core by using a polygonal nuclear power plant reactor plate, and is provided with 8 layers of nuclear power plant reactor plates connected with a hanging basket barrel body at the axial position on the outer side of the nuclear power plant reactor plate. The web plate is annular, the outer circle of the web plate is matched with the inner part of the hanging basket through 544 bolts 5/8 ', the inner side of the polygon is matched and fixed with the web plate, and each layer of web plate-web plate forms a rigid whole through 120 horizontal bolts 5/8' (total 960).
In the reactor internals of the nuclear power plant, the dismantling work of the spoke plate assembly is a great difficult problem in the decommissioning engineering of the nuclear power plant. The distance between the spoke plate assembly and the inner wall of the hanging basket is different from 10cm to 40cm, and the cutting of the spoke plate is difficult to finish at one time by adopting a cutting tool in the nuclear power plant retirement engineering due to the wide gap and the complex connection mode. Compelling to a decommissioning construction period, wherein when a pressurized water reactor nuclear power plant is decommissioned, some foreign nuclear power plants often choose to integrally dismantle the pressure vessel, and then transport the pressure vessel out of a reactor plant together with the internal confining plate assembly after grouting and sealing; still other nuclear power plants have introduced large cutting equipment (e.g., flame and abrasive water jet cutters) to cut the web assembly along with the basket segments. However, the two dismantling methods increase the period of other decommissioning activities (such as tool introduction and radioactive waste treatment) while reducing the dismantling time of the spoke plate, and the decommissioning efficiency is not improved fundamentally.
In addition, the nuclear power plant reactor internals work for 40 years to 60 years under the strong radiation environment and the bolt material is exposed to the radiation and expands and deforms, and is difficult to completely take out due to long-time corrosion. In the related art, the bolts are usually forcibly detached by a force application method and a material removal method, however, the methods usually require personnel to install equipment at a close distance and are not suitable for the radiation environment of the reactor (the reactor internals are medium-level horizontal radioactive wastes which can cause serious injury to the personnel).
In view of this, it is necessary to provide a safe and efficient bolt dismounting device for a nuclear power plant spoke plate assembly.
Disclosure of Invention
The invention aims to: the defect of the prior art is overcome, and a safe and efficient bolt dismounting device for the nuclear power plant spoke plate assembly is provided.
In order to achieve the above object, the present invention provides a bolt dismounting device for a nuclear power plant spoke plate assembly, including:
the supporting base can be arranged on the spoke plate and is provided with a circular track;
the carrying platform is arranged on the supporting base and can move along a circular track;
the rotary platform is fixedly arranged on the carrying platform and can rotate 360 degrees relative to the carrying platform;
the XYY double-shaft triple movement system is fixedly arranged on the rotary platform and can freely move in the XY direction; and
and the boring machine is arranged on the XYY double-shaft triple movement system and can move along with the XYY double-shaft triple movement system, and axially feeds and circumferentially rotates along the bolt hole.
As an improvement of the bolt dismounting device for the nuclear power plant radials surrounding assembly, the support base comprises steel beams which are perpendicular to each other and an octagonal frame which is arranged around the steel beams, a steel ring is arranged in the center of the support base, eight vertexes of the steel ring and the octagonal frame are welded together through four diagonal steel beams, and a hydraulic support leg which can freely stretch and retract under the driving of a hydraulic pump is arranged in the middle of each side of the octagonal frame.
As an improvement of the bolt dismounting device for the nuclear power plant spoke plate assembly, the four diagonal steel beams extend and are converged at the center of the supporting base.
As an improvement of the bolt dismounting device for the nuclear power plant spoke plate assembly, the circular track is a concave steel rail and is welded on a steel beam.
As an improvement of the nuclear power plant spoke plate component bolt dismantling device, a fan-shaped steel plate is arranged at one end of the carrying platform, a working module is arranged on the fan-shaped steel plate, a rectangular steel plate is arranged at the other end of the carrying platform, and a power assembly module is arranged on the rectangular steel plate.
As an improvement of the device for dismounting the bolts of the nuclear power plant spoke plate assembly, the working module comprises a fixing device of a rotary platform, a positioning wheel and a driven wheel, wherein the positioning wheel and the driven wheel are clamped in a circular track and can move along the circular track; the power assembly module comprises a power pack and a driving wheel, the power pack provides power for the driving wheel and controls the driving wheel to move according to an operation instruction, and the driving wheel drives the carrying platform to move along the circular track under the driving of the power pack.
As an improvement of the bolt dismounting device for the nuclear power plant spoke plate assembly, the rotating platform is provided with a hydraulic motor, and the hydraulic motor drives the rotating platform to rotate 180 degrees and 360 degrees relative to the supporting base.
As an improvement of the nuclear power plant spoke plate assembly bolt dismantling device, the XYY double-shaft triple-linkage moving system comprises an X-shaft moving system, a Y-shaft primary moving system and a Y-shaft secondary moving system, each moving system is an independent lead screw transmission system, and the lead screws are driven to rotate by motors at two ends, so that nuts on the lead screws linearly move along the axial direction of the lead screws, and a boring machine is driven to move.
As an improvement of the nuclear power plant spoke plate assembly bolt dismantling device, the Y-axis primary moving system comprises two parallel Y-axis primary transmission lead screws, a guide plate for maintaining the lead screws to move in the Y direction, and a Y-axis primary guide rail and a Y-axis secondary guide rail which are completely meshed with two ends of the guide plate, the XYY-axis double-shaft triple-linkage moving system is provided with a bottom plate, and a Y-axis primary transmission motor and a lead screw nut are assembled together and are arranged in the center of the bottom plate.
As an improvement of the nuclear power plant spoke plate assembly bolt dismounting device, the X-axis moving system comprises a lead screw transmission system and two guide rails positioned on two sides of the lead screw transmission system, a base of the boring machine is provided with a mounting hole and a nut fixedly mounted in the base, the two guide rails penetrate through the mounting hole and mount the boring machine on the XYY double-axis triple movement system, motors at two ends of the lead screw transmission system of the X-axis moving system drive a lead screw and drive the nut in the base to move axially, and the nut pushes the boring machine on the base to move.
As an improvement of the nuclear power plant spoke plate assembly bolt dismounting device, the Y-axis secondary moving system comprises two parallel Y-axis secondary transmission motors, a lead screw and a base which is fused with a lead screw nut and connected with the X-axis moving system.
As an improvement of the device for removing the bolts of the nuclear power plant web plate assembly, the boring machine comprises a main machine, a boring rod and a boring cutter assembly, wherein the main machine comprises a clamp capable of abutting against the surface of the web plate and a power transmission mechanism for driving the boring rod to axially feed and circumferentially rotate.
As an improvement of the nuclear power plant spoke plate assembly bolt dismounting device, the boring machine is provided with a camera and a lighting device which are the same as the boring rod in the axial direction.
Compared with the prior art, the nuclear power plant spoke plate assembly bolt dismantling device can dismantle the spoke plate connecting bolts at the same height by matching the carrying platform and the rotating platform and hoisting in place at one time, can execute the operations of carrying platform rotating in place, rotating platform direction adjustment and boring machine tool operation through the monitoring video, realizes unmanned remote control operation in a strong radiation environment, and can dismantle the nuclear power plant spoke plate assembly bolts safely and efficiently.
Drawings
The following describes in detail a bolt dismounting device for a nuclear power plant spoke plate assembly and technical effects thereof with reference to the accompanying drawings and specific embodiments, wherein:
fig. 1 is an exploded view of a nuclear power plant spoke plate assembly bolt dismantling device according to the invention.
Fig. 2 is a schematic structural diagram of a support base of the bolt dismounting device for the nuclear power plant spoke plate assembly.
FIG. 3 is a schematic structural diagram of a carrying platform of the device for dismounting bolts of the nuclear power plant spoke plate assembly.
Fig. 4 is a schematic structural diagram of a rotating platform of the nuclear power plant spoke plate assembly bolt dismounting device.
FIG. 5 is a schematic structural diagram of a XYY biaxial triple movement system of the bolt dismounting device for the nuclear power plant spoke plate assembly.
FIG. 6 is a schematic structural diagram of a boring machine of the nuclear power plant spoke plate assembly bolt dismounting device.
In the figure, the position of the upper end of the main shaft,
10- -support the base; 100- -steel beam; 102- -a frame; 104- -hydraulic legs; 106- -steel ring; 108- -circular orbit; 110- -arc friction plate;
20- -carrying platform; 202- -sector shaped steel plate; 204 — a work module; 206- -positioning wheels; 208- -driven wheel; 210-rectangular steel plate; 212- -powertrain Module; 214- -power pack; 216 — drive wheel;
30- -rotating platform; 302- -a rotating mechanism; 304- -a hydraulic motor;
40- -XYY two-axis triple system of movement; 400- -Y axis primary drive lead screw; 402- -a guide plate; 404- -Y-axis primary and secondary guide rails; 406- -Y-axis primary drive motor and lead screw nut; 408- -Y axis secondary drive motor and lead screw; 410-X-axis lead screw drive system; 412- -X axis guide;
50-boring machines; 500- -a base; 502- -host; 504- -boring bar; 506 — a boring cutter assembly; 508- -a clamp; 510- -a camera; 512 — lighting devices.
Detailed Description
In order to make the objects, technical solutions and technical effects of the present invention more clear, the present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the detailed description and specific examples, while indicating the preferred embodiment of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention.
Referring to fig. 1 to 6, the present invention provides a bolt dismounting device for a nuclear power plant spoke plate assembly, including:
the supporting base 10 can be installed on the spoke plate, and a circular track 108 is arranged on the supporting base 10;
a mounting platform 20 mounted on the support base 10 and movable along a circular rail 108;
a rotary platform 30 fixedly mounted on the mounting platform 20 and rotatable three hundred and sixty degrees with respect to the mounting platform 20;
a XYY biaxial triple movement system 40 fixedly installed on the rotary platform 30 and freely movable in XY directions; and
and the boring machine 50 is installed on the XYY double-shaft triple movement system 40 and can move along with the XYY double-shaft triple movement system 40 to axially feed and circumferentially rotate along the bolt hole.
Referring to fig. 2, the supporting base 10 includes a regular octagonal frame 102 and steel beams 100 perpendicular to each other, a hydraulic leg 104 is installed at the middle of each side of the frame 102 and can be freely extended and retracted under the driving of a hydraulic pump, and when the center of gravity of the supporting base 10 is adjusted, an arc-shaped friction plate 110 at the front end of the hydraulic leg 104 is matched with the wall of the basket to provide an upward friction force for fixing. The support base 10 is centrally provided with a steel ring 106 to avoid stress concentrations. The eight vertices of the steel ring and octagonal frame 102 are welded together by steel beams 100, wherein four diagonal steel beams 100 extend and converge at the center of the support base 10 and are welded and fixed.
It will be appreciated that the support base 10 having the regular octagonal frame 102 is simple and stable in construction, easy to manufacture in a factory and install on site, and avoids human-induced assembly errors. Each side of the regular octagonal frame 102 of the support base 10 can be supported on top of the enclosure, reducing the friction requirements for the hydraulic legs 104. In the illustrated embodiment, eight hydraulic legs 104 are symmetrically mounted, the weight of the entire tool is evenly distributed to each hydraulic leg 104, and the hydraulic legs 104 are detachably mounted for maintenance.
In the embodiment shown in fig. 2, the circular track 108 is a semi-closed concave steel rail welded on the steel beam 100, and the circular motion of the carrying platform 20 around its central point is limited, and at the same time, the lower plane of the circular track 108 is used to clamp four wheels, so that no additional fixing device is needed for the carrying platform 20 to rotate three hundred and sixty degrees and preventing the carrying platform 20 from falling. In addition, in order to stably mount the support base 10 on the spoke plate, the contact surface area of the hydraulic support leg 104 and the wall of the hanging basket is increased and engraved with anti-skid lines.
Referring to fig. 3, the carrying platform 20 is connected to the supporting base 10 and connected to the rotating platform 30 to perform the turning and positioning functions of the demolition apparatus. The main body of the carrying platform 20 is a welded and fixed steel frame structure, the front end of the steel frame is provided with a fan-shaped steel plate 202, the fan-shaped steel plate 202 is provided with a working module 204, the rear end of the steel frame is provided with a rectangular steel plate 210, and the rectangular steel plate 210 is provided with a power assembly module 212. Since the front end of the carrying platform 20 is provided with the working module 204 and the rear end is provided with the power assembly module 212, the front and rear weight distribution is balanced, and the side turning can be prevented.
The working module 204 comprises a fixing device of the rotary platform 30, a positioning wheel 206 and a driven wheel 208 which are clamped in the circular track 108 and can move along the circular track 108, and the positioning wheel 206 and the driven wheel 208 are obliquely arranged along the fan-shaped steel plate to reserve a working activity space for dismounting the device. The positioning wheels 206 are configured with a travel code positioning system that can determine the orientation of the dock 20 by reading a position encoder of the circular track 108 on the support base 10. The positioning wheels 206 and the driven wheels 208 do not have a power system, but run along the circular track 108 under the driving of the driving wheels 216, and the wheels are clamped in the inner hidden grooves of the circular track 108, so that the carrying platform 20 can be prevented from derailing.
The power assembly module 212 comprises a power pack 214 and a driving wheel 216, the power pack 214 provides power for the driving wheel and controls the driving wheel 216 to move according to an operation instruction, the driving wheel 216 drives the carrying platform 20 to move along the circular track 108 under the driving of the power pack 214 to provide coarse positioning of the dismounting device, the two driving wheels 216 are arranged in parallel, one is responsible for clockwise rotation, and the other is responsible for counterclockwise rotation.
Referring to fig. 4, the rotating platform 30 provides a precise and proper working angle for the demolition apparatus by means of the rotating mechanism 302 after the carrying platform 20 is in place. The rotating mechanism 302 can drive the boring tool 50 to rotate on the carrying platform 20 by at least 180 degrees horizontally (in the illustrated embodiment, 360 degrees rotation is completed) under the driving of the hydraulic motor 304, so as to ensure that the drill of the boring tool 50 can rotate flexibly, and the shroud-web connecting bolts in the front, right, left and right directions can be removed, so that the boring tool 50 can simultaneously bore and remove the shroud-web bolts in the three directions without secondary rotation and positioning when being fixed on the carrying platform 20. The rotary platform 30 is identical to the existing rotary platform in structure and principle, and is not described in detail.
Referring to fig. 5, the XYY biaxial triple movement system 40 can freely translate the boring tool 50 along the XY direction in two directions, so as to solve the problem that the rotary platform 30 can only rotate the boring tool 50 in situ to adjust the feeding angle and cannot send the boring tool 50 to the target bolt. The XYY biaxial triad shift system 40 comprises three parts which are integrally combined: each set of moving system comprises an independent lead screw transmission system, and the lead screw is driven to rotate by a motor, so that a nut on the lead screw linearly moves along the axial direction of the lead screw, and the boring machine 50 is driven to move.
The Y-axis primary moving system includes two Y-axis primary driving screws 400 connected in parallel (redundant design, one can work normally under normal conditions), a guide plate 402 for the Y-axis primary driving screw 400 to move stably in the Y direction, and a Y-axis primary and secondary guide rails 404 completely engaged with both ends of the guide plate 402. In order to move the boring tool 50 in the positive and negative directions along the Y-axis to accommodate the need for removing the 180 ° bolts from the opposite apron, the Y-axis primary drive motor and the lead screw nut 406 are assembled together and mounted in the center of the base plate of the Y-axis primary motion system in the illustrated manner. During normal operation, the motor is started to force the nut to rotate, and the Y-axis primary transmission lead screw 400 drives the Y-axis secondary moving system fixed with the Y-axis primary transmission lead screw to axially move together.
The Y-axis secondary moving system comprises two parallel Y-axis secondary transmission motors and a lead screw 408 (located between the Y-axis primary transmission motor and a lead screw nut 406, redundancy design is adopted, one can normally work under normal conditions), and the base is fused with the lead screw nut and connected with the X-axis moving system. The Y-axis secondary moving system is similar to a conventional lead screw transmission system, a motor is arranged at two ends of a rotary lead screw to drive a nut in a base to move axially, and the nut pushes an X-axis moving system on the base to move.
For weight reduction, the X-axis motion system has only one X-axis lead screw drive system 410. However, since it takes on the function of positioning the boring tool 50 in the last step, which requires high precision, it is matched with two X-axis guide rails 412. The base 500 of the boring tool 50 is provided with mounting holes through which two X-axis guide rails 410 pass and mount the boring tool 50 on the XYY two-axis triple movement system 40, and nuts fixedly mounted in the base. The lead screw drive system 410 of the X-axis movement system is similar to a conventional lead screw drive system, and the motors at the two ends rotate the lead screws to drive the nuts in the base to move axially, and the nuts push the boring tool 50 on the base to move.
Referring to fig. 6, a boring machine 50 is responsible for actual crushing and removing of bolts, and is a direct working load of the bolt removing device for the nuclear power plant spoke plate assembly of the invention. The boring machine 50 comprises a base 500, a main machine 502, a boring bar 504 and a boring cutter assembly 506, wherein the main machine 502, the boring bar 504 and the boring cutter assembly are mounted on the base 500, and the main machine 502 comprises a clamp 508 capable of abutting against the surface of the enclosing plate and a power transmission mechanism for driving the boring bar 504 to axially feed and circumferentially rotate. The clamp 508 is against the surface of the enclosing plate and is responsible for fine adjustment of the feeding angle of the boring bar 504 and the stability of the rotating process, and damage to the boring bar 504 is prevented. The power transmission mechanism drives the boring bar 504 to axially feed and circumferentially rotate, so that the boring cutter assembly 506 can be pushed forward while crushing the bolt, and finally returns to the original position to prepare for the next operation. It should be noted that the boring tool 50 is consistent with the existing boring tools in terms of methods and principles, and the description is omitted here.
The boring bar 504 transmits the torque output by the boring machine 50 to the boring cutter assembly 506, and has a locking part at the rear end thereof to lock with the power transmission mechanism of the main machine 502, a bar body passing through the clamp 508 to hold the boring cutter assembly in a stable orientation, and a morse taper hole at the front end thereof for mounting the boring cutter assembly 506. The boring tool assembly 506 is consistent with existing widely-existing boring tool assemblies in structure and principle, and is not described in detail in the specification. The boring tool is matched with the morse taper hole on the boring bar 504 through the morse taper shank, and rotates along with the morse taper hole by virtue of friction force.
According to one embodiment of the invention, the boring tool 50 is provided with a camera 510 and an illumination device 512 that are axially identical to the boring bar 504. The camera 510 facilitates monitoring of real-time operation of the boring cutter assembly 506, and the illumination device 512 provides illumination to the camera 510.
Shroud-web bolts are embedded in the shroud at the beginning of the design to avoid coolant impingement, thus eliminating the need for additional bolt head cutting steps as is done in conventional methods.
The installation and use method of the nuclear power plant spoke plate assembly bolt dismantling device is described in detail below with reference to the accompanying drawings:
assembling the supporting base 10, the carrying platform 20, the rotating platform 30, the XYY double-shaft triple movement system 40 and the boring machine 50 from bottom to top on the mounting rack;
turning over the assembled bolt dismounting device, keeping the support base 10 on the upper carrying platform 20, the lower rotating platform 30 and the lowest boring machine 50 in sequence, switching on a power supply, and testing whether each part is normal;
hoisting the bolt dismounting device in place by using a ring crane, adjusting the hoisting angle, paying attention to the level control, lowering the boring cutter assembly 506 to the height of the first layer of spoke plate enclosing bolts, starting the hydraulic support leg 104, attaching the bottom surface of the hydraulic support leg 104 to the wall of the hanging basket, and disconnecting the connection of the ring crane;
after the bolt removing device is in place, the bolt removing device only needs to sequentially remove bolts according to a set program: the carrying platform 20 firstly rotates horizontally for one circle to find a set working azimuth angle and fix the working azimuth angle, and then the rotating platform 30 adjusts the pointing angle of the boring machine 50 according to the range of the coaming. According to different target enclosing plates, the offset in the Y direction is adjusted, the boring cutter assembly 506 and the bolt hole are determined to be on the same axis (when a Y-axis secondary moving system works, if the stroke is insufficient, the Y-axis primary moving system is started to complement the residual stroke), and then an X-axis moving system works to enable the clamp 508 of the boring tool 50 to abut against the surface of the enclosing plate;
the operator confirms that the bolt to be removed is positioned in the center of the screen through the image output by the coaxial camera 510, and the rotation track of the boring cutter assembly 506 covers the whole bolt surface, i.e., the boring machine 50 can completely bore the bolt; after the feeding speed, the feeding distance and the rotating speed of the boring cutter are set, a power supply for driving the boring rod 504 to rotate in the circumferential direction and feed in the axial direction by the host is switched on, and the machine is started to operate formally; as the boring cutter continuously penetrates into the bolt hole, the scraps of the bolt are continuously taken out by the spiral groove on the boring cutter until the boring of the whole bolt is completed;
after finishing one boring, the boring cutter assembly 506 returns to the original position under the driving of the host 502, and after confirming the boring effect, the operator inputs a new bolt dismantling parameter to start the next dismantling process.
As can be seen from the above detailed description of the embodiments of the present invention, compared with the prior art, the nuclear power plant spoke plate assembly bolt dismantling device of the present invention can dismantle the spoke plate connecting bolts at the same height by matching the carrying platform 20 and the rotating platform 30, and can perform operations of carrying platform 20 rotating in place, rotating platform 30 adjusting direction, and boring machine 50 by monitoring video, so as to implement unmanned remote operation in a strong radiation environment, and can dismantle the nuclear power plant spoke plate assembly bolts safely and efficiently.
The present invention can be modified and adapted appropriately from the above-described embodiments, according to the principles described above. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and some modifications and variations of the present invention should fall within the scope of the claims of the present invention. Furthermore, although specific terms are employed herein, they are used in a generic and descriptive sense only and not for purposes of limitation.
Claims (13)
1. The utility model provides a device is demolishd to nuclear power plant's girth web subassembly bolt which characterized in that includes:
the supporting base can be arranged on the spoke plate and is provided with a circular track;
the carrying platform is arranged on the supporting base and can move along a circular track;
the rotary platform is fixedly arranged on the carrying platform and can rotate 360 degrees relative to the carrying platform;
the XYY double-shaft triple movement system is fixedly arranged on the rotary platform and can freely move in the XY direction; and
and the boring machine is arranged on the XYY double-shaft triple movement system and can move along with the XYY double-shaft triple movement system, and axially feeds and circumferentially rotates along the bolt hole.
2. The nuclear power plant spoke plate assembly bolt dismantling device of claim 1, wherein the support base comprises mutually perpendicular steel beams and an octagonal frame arranged around the steel beams, a steel ring is arranged in the center of the support base, eight vertexes of the steel ring and the octagonal frame are welded together through four diagonal steel beams, and a hydraulic support leg capable of freely extending and retracting under the driving of a hydraulic pump is arranged in the middle of each side of the octagonal frame.
3. The nuclear power plant spoke plate assembly bolt removal device defined in claim 2, wherein the four diagonal steel beams extend and converge at a center of the support base.
4. The nuclear power plant spoke plate assembly bolt removing device of claim 2, wherein the circular track is a concave steel rail and is welded on a steel beam.
5. The nuclear power plant spoke plate assembly bolt dismantling device of claim 1, wherein one end of the carrying platform is provided with a fan-shaped steel plate, the fan-shaped steel plate is provided with a working module, the other end of the carrying platform is provided with a rectangular steel plate, and the rectangular steel plate is provided with a power assembly module.
6. The nuclear power plant spoke plate assembly bolt dismounting device is characterized in that the working module comprises a fixing device of a rotating platform, a positioning wheel and a driven wheel, wherein the positioning wheel is clamped in the circular track and can move along the circular track, the positioning wheel is provided with a traveling code positioning system, and the orientation of the carrying platform is determined by reading a position encoder of a steel rail on the support base; the power assembly module comprises a power pack and a driving wheel, the power pack provides power for the driving wheel and controls the driving wheel to move according to an operation instruction, and the driving wheel drives the carrying platform to move along the circular track under the driving of the power pack.
7. The nuclear power plant web assembly bolt removal device of claim 1, wherein the rotary platform is provided with a hydraulic motor that drives the rotary platform to rotate 180-360 ° relative to the support base.
8. The nuclear power plant spoke plate assembly bolt dismantling device according to claim 1, wherein the XYY double-shaft triple-linkage moving system comprises an X-axis moving system, a Y-axis primary moving system and a Y-axis secondary moving system, each moving system is an independent lead screw transmission system, and a motor at two ends drives a lead screw to rotate, so that a nut on the lead screw linearly moves along the axial direction of the lead screw to drive a boring machine to move.
9. The nuclear power plant containment plate assembly bolt dismantling device according to claim 8, wherein the Y-axis primary moving system includes two Y-axis primary transmission screws connected in parallel, a guide plate for maintaining the screws in motion in the Y direction, and Y-axis primary and secondary guide rails completely engaged with both ends of the guide plate, and the XYY dual-axis triple movement system is provided with a base plate, and the Y-axis primary transmission motor and the screw nut are assembled together and installed at a central position of the base plate.
10. The nuclear power plant containment plate assembly bolt dismantling device according to claim 8, wherein the X-axis moving system comprises a screw rod transmission system and two guide rails located on two sides of the screw rod transmission system, a base of the boring machine is provided with a mounting hole and a nut fixedly installed in the base, the two guide rails penetrate through the mounting hole and install the boring machine on the XYY double-axis moving system, motors at two ends of the screw rod transmission system of the X-axis moving system drive a screw rod and drive the nut in the base to move axially, and the nut pushes the boring machine on the base to move.
11. The nuclear power plant containment disc assembly bolt removal device of claim 10, wherein the Y-axis secondary movement system comprises two parallel Y-axis secondary drive motors and a lead screw, and a base fused with the lead screw nut and connected to the X-axis movement system.
12. The nuclear power plant spoke plate assembly bolt dismounting device according to claim 1, wherein the boring machine comprises a main machine, a boring rod and a boring cutter assembly, the main machine comprises a clamp capable of abutting against the surface of the spoke plate and a power transmission mechanism for driving the boring rod to axially feed and circumferentially rotate.
13. The nuclear power plant spoke plate assembly bolt removal device of claim 12, wherein the boring machine is provided with a camera and a lighting device which are the same as the axial direction of the boring bar.
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| CN202110159419.1A CN112975363B (en) | 2021-02-05 | 2021-02-05 | Nuclear power plant's radials surrounding subassembly bolt demolishs device |
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| CN202110159419.1A CN112975363B (en) | 2021-02-05 | 2021-02-05 | Nuclear power plant's radials surrounding subassembly bolt demolishs device |
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| CN112975363A true CN112975363A (en) | 2021-06-18 |
| CN112975363B CN112975363B (en) | 2022-12-02 |
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| CN (1) | CN112975363B (en) |
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| CN114888555A (en) * | 2022-04-29 | 2022-08-12 | 中广核研究院有限公司 | Fastener replacement and repair device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114888555B (en) * | 2022-04-29 | 2023-04-11 | 中广核研究院有限公司 | Fastener replacement and repair device |
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| CN112975363B (en) | 2022-12-02 |
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