CN111573495A - Nuclear power station grid horizontal hoisting tool and use method thereof - Google Patents
Nuclear power station grid horizontal hoisting tool and use method thereof Download PDFInfo
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- CN111573495A CN111573495A CN202010419174.7A CN202010419174A CN111573495A CN 111573495 A CN111573495 A CN 111573495A CN 202010419174 A CN202010419174 A CN 202010419174A CN 111573495 A CN111573495 A CN 111573495A
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- bearing plate
- suspender
- lifting
- sleeve
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
- B66C1/10—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means
- B66C1/12—Slings comprising chains, wires, ropes, or bands; Nets
- B66C1/122—Sling or load protectors
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
- B66C1/10—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means
- B66C1/62—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means comprising article-engaging members of a shape complementary to that of the articles to be handled
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- Load-Engaging Elements For Cranes (AREA)
Abstract
The invention discloses a horizontal hoisting tool for a nuclear power station framework and a using method thereof, wherein the hoisting tool comprises a first suspender, a second suspender, a third suspender, a plurality of top hoisting plates, a plurality of bottom hoisting plates and a plurality of slings; when the hoisting tool is used, two ends of the second suspender are connected to the right end of the first suspender through the suspender, and two ends of the third suspender are connected to the left end of the first suspender through the suspender; the top lifting plate is connected to the second suspender through the suspender, and the bottom lifting plate is connected to the third suspender through the suspender. The invention aims to provide a horizontal lifting tool for a nuclear power station grid and a using method thereof.
Description
Technical Field
The invention relates to the technical field of auxiliary mechanical equipment of a nuclear power station, in particular to a horizontal lifting tool for a nuclear power station framework and a using method thereof.
Background
Spent fuel, also known as irradiated nuclear fuel, is spent nuclear fuel that has been subjected to irradiation, typically produced by the nuclear reactor of a nuclear power plant. The nuclear fuel is bombarded by neutrons in the reactor to generate nuclear reaction, and is discharged from the reactor after a certain time. It contains lots of unexhausted breedable material 238U or 232Th, unexhausted and newly-produced fissile material 239Pu, 235U or 233U and transuranic elements produced by nuclear fuel in the course of irradiation, such as neptunium, americium and curium, in addition to fissile elements 90Sr, 137Cs and 99 Tc. This fuel is so called spent fuel because it has a reduced uranium content and cannot sustain the nuclear reaction. Spent nuclear fuel contains a large amount of radioactive elements and therefore is radioactive and if not properly disposed of, can severely affect the environment and the health of those in contact with them.
At present, domestic nuclear power stations are in commercial use for more than 20 years, the outward transportation of spent fuel is limited, the spent fuel storage capacity of a spent fuel pool is gradually reduced, and the high-density transformation of a framework of the spent fuel pool is necessary. After the old cadmium lattice is washed and decontaminated, the cadmium lattice needs to be horizontally hoisted to a flat car by using a horizontal hoisting tool, and then the cadmium lattice is packaged and transported to a temporary storage place. However, the grillwork belongs to thin-wall precision equipment and is not applicable to the current strap bottom-packing method.
Disclosure of Invention
The invention aims to provide a horizontal lifting tool for a nuclear power station grid and a using method thereof.
The invention is realized by the following technical scheme:
a nuclear power station grillage horizontal hoisting tool comprises a first suspender, a second suspender, a third suspender, a top hoisting plate and a bottom hoisting plate; the length of the second hanging rod is greater than that of the third hanging rod;
when the hoisting tool is used, the first suspender is connected with a hook of a crane, and the axis of the first suspender is parallel to the horizontal axis of the grillwork; the second suspender is connected to the right end of the first suspender, and the axis of the second suspender is vertical to the axis of the first suspender; the top of the top lifting plate is connected with the second suspender, and the bottom of the top lifting plate is fixedly connected with the lifting lug at the top of the grillage; the third suspender is connected to the left end of the first suspender, and the axis of the third suspender is parallel to the axis of the second suspender; the top of the bottom lifting plate is connected to the third suspender, and the bottom of the bottom lifting plate is fixedly connected with the screw hole at the bottom of the grillwork.
In a nuclear power plant, a relatively common product is spent fuel, the specific activity of the spent fuel is high, a large amount of decay heat is released, and the spent fuel must be stored for a period of time until the radioactivity and the residual heat are reduced to a certain degree and then operated and treated.
At present, the common treatment mode of the spent fuel in the nuclear power station is as follows: the spent fuel unloaded from the reactor is temporarily stored in a spent fuel pool, and a spent fuel storage grillwork is arranged in the pool and can be used for storing new fuel and spent fuel assemblies unloaded from a reactor factory building. When the grids are cleaned, the grids need to be washed from a water pool and decontaminated, then the cadmium grids are horizontally hoisted to a flat car by using a hoisting tool, and then the cadmium grids are packaged and transported to a temporary storage yard. Traditional hoist and mount are rigid connection structure, and the framework belongs to thin wall class precision equipment, and when adopting traditional lifting device hoist and mount framework, if the accident collision takes place, under the effect of external force, lifting device can lead to the fact the extrusion to the framework to lead to the framework to produce deformation, in addition because fuel assembly only 11mm with the total clearance of storage framework cell, so the framework is in case to be out of shape, then can not continue to use. In addition, due to the fact that spent fuel is stored in the grillwork for a long time, radioactivity exists in the grillwork, and if the grillwork is damaged due to accidental collision, the physical health of field workers can be seriously affected.
In the scheme, a novel horizontal hoisting tool is provided, and the traditional rigid connection mode is replaced by the sling connection mode among the booms of the hoisting tool, so that in the hoisting process, the angle between the first boom and the second boom or the third boom can be freely adjusted according to the weight of a hoisted object, and the second boom and the third boom reach a relatively balanced state. If when the accident collision takes place, this kind of balanced state is broken under the effect of external force, and then makes second jib and third jib round first jib reciprocating motion under the effect of external force to look for the balance point again, look for the balance point in-process at this, directly convert external force into the kinetic energy of second jib and third jib, thereby disperse the interact power between each jib, offset the moment of flexure that produces when hoist and mount, in order to avoid causing the damage to the check frame.
Further, the first suspension rod comprises a first bearing plate, a second bearing plate, a first fixing plate, a second fixing plate, a first sleeve, a second sleeve, a steel pipe and a clamping plate; the length of the second bearing plate is greater than that of the first bearing plate;
the first fixing plate is arranged along the vertical direction, the first sleeve is fixedly arranged on the right side face of the first fixing plate along the horizontal direction, the first bearing plate is fixedly arranged on the outer top of the first sleeve, and shackles are arranged at the bottom of the first fixing plate and the top of the first bearing plate;
the second fixing plate is arranged in the vertical direction, the shackle is arranged at the bottom of the second fixing plate, the second sleeve is arranged on the left side face of the second fixing plate in the horizontal direction, the shackle is arranged at the top of the second bearing plate, and the bottom of the second bearing plate is fixedly arranged at the outer top of the second sleeve; the clamping plate is fixedly arranged on the left side surface of the second bearing plate, and a through hole is formed in the clamping plate;
one end of the steel pipe is fixedly arranged on the first sleeve, and the other end of the steel pipe penetrates through the through hole and then is fixedly arranged on the second sleeve.
Because the framework is soaked in boric acid water for more than 20 years, the relevant connecting parts are rusted, so that the supporting legs at the bottom of the framework cannot be screwed off, and considering that the weight of one side (the bottom of the framework) with the supporting legs is larger, the gravity center of the framework is not coincident with the centroid of the framework. Therefore, in the scheme, the first lifting plate is arranged to be special-shaped (namely, the left end and the right end of the first lifting rod are asymmetric), so that the weights of the left end and the right end of the first lifting rod are unequal, the top of the grillwork is fixed on the side with the larger weight of the first lifting rod in the lifting process of the grillwork, and the bottom of the grillwork is fixed on the side with the smaller weight of the first lifting rod, so that the weights of the left end and the right end of the first lifting rod are balanced with each other in the lifting process of the grillwork, and the shaking of the grillwork in the lifting process is reduced.
Further, the steel pipe includes interior steel pipe and outer steel pipe, interior steel pipe fixed set up in the inside of outer steel pipe, just the left end of interior steel pipe is fixed to be set up on the first sleeve, the right-hand member of interior steel pipe is fixed to be set up on the second sleeve.
In the nuclear power station, the weight of framework is heavier, through setting up two-layer steel pipe inside and outside, can increase the intensity and the rigidity of first jib, guarantees not rupture at the hoist and mount in-process of framework.
Further, the second hanger rod comprises a third fixing plate, a fourth fixing plate, a third bearing plate, a fourth bearing plate, a fifth bearing plate, a sixth bearing plate, a first reinforcing plate, a second reinforcing plate, a third sleeve, a fourth sleeve and a first connecting steel pipe;
the first reinforcing plate is arranged along the horizontal direction, a third bearing plate is fixedly arranged at the top of the first reinforcing plate, and a fourth bearing plate is fixedly arranged at the bottom of the first reinforcing plate; the third fixing plate is arranged along the vertical direction, the left side surface of the third fixing plate is connected to the third bearing plate, the first reinforcing plate and the fourth bearing plate, and the right side surface of the third fixing plate (201) is provided with a third sleeve along the horizontal direction;
the second reinforcing plate is arranged along the horizontal direction, a fifth bearing plate is fixedly arranged at the top of the second reinforcing plate, and a sixth bearing plate is fixedly arranged at the bottom of the first reinforcing plate; the fourth fixing plate is arranged along the vertical direction, the right side surface of the fourth fixing plate is connected to the fifth bearing plate, the second reinforcing plate and the sixth bearing plate, and the left side surface of the fourth fixing plate is provided with a fourth sleeve along the horizontal direction;
the left end of the first connecting steel pipe is fixedly arranged on the third sleeve, and the right end of the first connecting steel pipe is fixedly arranged on the fourth sleeve;
the top of the third bearing plate, the bottom of the fourth bearing plate, the top of the fifth bearing plate and the bottom of the sixth bearing plate are all provided with the shackles.
Further, the third hanger rod comprises a fifth fixing plate, a sixth fixing plate, a seventh bearing plate, an eighth bearing plate, a ninth bearing plate, a tenth bearing plate, a third reinforcing plate, a fourth reinforcing plate, a fifth sleeve, a sixth sleeve and a second connecting steel pipe, wherein the length of the second connecting steel pipe is smaller than that of the first connecting steel pipe;
the third reinforcing plate is arranged along the horizontal direction, a seventh bearing plate is fixedly arranged at the top of the third reinforcing plate, and an eighth bearing plate is fixedly arranged at the bottom of the third reinforcing plate; the fifth fixing plate is arranged in the vertical direction, the left side surface of the fifth fixing plate is connected to the seventh bearing plate, the third reinforcing plate and the eighth bearing plate, and the right side surface of the fifth fixing plate is provided with a fifth sleeve in the horizontal direction;
the fourth reinforcing plate is arranged along the horizontal direction, a ninth bearing plate is fixedly arranged at the top of the fourth reinforcing plate, and a tenth bearing plate is fixedly arranged at the bottom of the first reinforcing plate; the sixth fixing plate is arranged along the vertical direction, the right side surface of the sixth fixing plate is connected to the ninth bearing plate, the fourth reinforcing plate and the tenth bearing plate, and a sixth sleeve is arranged on the left side surface of the sixth fixing plate along the horizontal direction;
the left end of the second connecting steel pipe is fixedly arranged on the fifth sleeve, and the right end of the second connecting steel pipe is fixedly arranged on the sixth sleeve;
the top of the seventh bearing plate, the bottom of the eighth bearing plate, the top of the ninth bearing plate and the bottom of the tenth bearing plate are provided with shackles.
Considering the actual situation of the grid, namely: lifting lugs are arranged on two sides of the top of the grillwork, threaded holes are formed in the bottom of the grillwork, and supporting legs are installed on part of the threaded holes. And because the framework is soaked in boric acid water for a long time, the connecting part of the support leg and the framework is rusted, so that the support leg cannot be screwed off, the bottom lifting plate can be only arranged at the threaded hole of the framework, which is not provided with the support leg, and the positions of the bottom lifting plate and the top lifting plate arranged on the framework are different. Therefore, in the scheme, the length of the second suspender is set to be larger than that of the third suspender, so that the suspender connecting the second suspender and the top hoisting plate is perpendicular to the axis of the second suspender in the process of hoisting the grillage; and the hanging strip for connecting the third hanging rod and the bottom lifting plate is perpendicular to the third lifting plate, so that the grid is stable in the lifting process.
Further, the bottom lifting plate comprises a first bottom lifting plate and a second bottom lifting plate;
the first bottom lifting plate comprises an eleventh bearing plate and a first mounting plate, one end of the eleventh bearing plate is provided with a first lifting hole, the other end of the eleventh bearing plate is fixedly connected with one end of the first mounting plate, and the other end of the first mounting plate is provided with a first mounting hole; the second bottom lifting plate comprises a twelfth bearing plate and a second mounting plate; the length of the twelfth bearing plate is greater than that of the eleventh bearing plate, a second lifting hole is formed in one end of the twelfth bearing plate, the other end of the twelfth bearing plate is fixedly connected with one end of the second mounting plate, and a second mounting hole is formed in the other end of the second mounting plate.
Since the trellis is soaked in boric acid water for more than 20 years, the relevant joints are rusted, so that the support legs cannot be screwed off, and therefore, the bottom lifting plate can be only installed at the threaded holes of the trellis, which are not provided with the support legs. Considering that the positions of the threaded holes of the support legs which are not installed at the bottom of the lattice frame are different, in the scheme, the heights of the first bottom lifting plate and the second bottom lifting plate are set to be different, so that the lifting lugs, the first lifting holes and the second lifting holes are in the same horizontal plane in the lifting process, and the lattice frame is in a horizontal state in the lifting process. In addition, considering that the installation position of the bottom lifting plate may interfere with the supporting legs, so that the bottom lifting plate cannot be installed, in the scheme, the bottom installation plate is arranged to be arc-shaped, the height of the arc is larger than the length of the supporting legs, and the bottom lifting plate can be installed on the grillage.
Furthermore, the top lifting plate comprises a thirteenth bearing plate, one end of the thirteenth bearing plate is provided with a third lifting hole for connecting the lifting belt, and the other end of the thirteenth bearing plate is provided with a fixing through hole for fixedly connecting the lifting belt with the lifting lug.
The use method of the horizontal lifting tool for the nuclear power plant framework comprises the following steps:
connecting the left end and the right end of the second suspender to the right end of the first suspender, connecting the left end and the right end of the third suspender to the left end of the first suspender, and connecting the left end and the right end of the first suspender to a hook of a crane;
connecting the top of the top lifting plate to the second hanger bar and the top of the bottom lifting plate to the third hanger bar;
and connecting the bottom of the top lifting plate to a lifting lug at the top of the lattice frame, and connecting the bottom of the bottom lifting plate to a screw hole at the bottom of the lattice frame.
In this scheme, the mode that all adopts the suspender to connect replaces traditional rigid connection's connected mode between each jib of this horizontal hoisting instrument for if the accident collision takes place in the hoist and mount process, the bending moment that produces when offsetting the hoist and mount can disperse the interact power between each jib, thereby avoids causing the damage to the framework.
Further, the second boom and the third boom are both connected to the first boom through a sling; the top lifting plate and the bottom lifting plate are respectively connected with the second suspender and the third suspender through suspenders; the first suspender is connected with a hook of the crane through a suspender.
Further, the top lifting plate and the bottom lifting plate are connected with the grillwork through bolts.
Compared with the prior art, the invention has the following advantages and beneficial effects:
in this scheme, the mode that adopts the suspender to connect replaces traditional rigid connection's connected mode between each jib for if the accident collision takes place at the hoist and mount in-process, can disperse the interact power between each jib, thereby offset the moment of flexure that produces when hoist and mount, avoid causing the damage to the check frame.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:
FIG. 1 is a schematic front view of a horizontal lifting tool according to the present invention during use;
FIG. 2 is a schematic side view of the horizontal lifting tool of the present invention during use;
FIG. 3 is a front view of a first hanger bar of the present invention;
FIG. 4 is a side view of a first hanger bar of the present invention;
FIG. 5 is a front view of a second hanger bar of the present invention;
FIG. 6 is a side view of a second hanger bar of the present invention;
FIG. 7 is a front view of the bottom lifting plate of the present invention;
FIG. 8 is a side view of the bottom lifting plate of the present invention;
FIG. 9 is a front view of the top lift strap of the present invention.
Reference numbers and corresponding part names in the drawings:
1. a first boom; 2. a second boom; 3. a third boom; 4. a top lifting plate; 5. a bottom lifting plate; 6. a sling; 7. Shackle dismounting; 8. a framework; 9. lifting lugs; 101. a first bearing plate; 102. a second bearing plate; 103. a first fixing plate; 104. a second fixing plate; 105. a first sleeve; 106. a second sleeve; 107. clamping a plate; 108. an inner steel tube; 109. an outer steel tube; 201. a third fixing plate; 202. a fourth fixing plate; 203. a third bearing plate; 204. a fourth bearing plate; 205. a fifth bearing plate; 206. A sixth bearing plate; 207. a first reinforcing plate; 208. a second reinforcing plate; 209. a third sleeve; 210. a fourth sleeve; 211. A first connecting steel pipe; 401. a thirteenth bearing plate; 402. a third lifting hole; 403. a fixing through hole; 501. a first bottom lifting plate; 502. a second bottom lifting plate; 503. an eleventh bearing plate; 504. a first mounting plate; 505. a first lifting hole; 506. a first mounting hole.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to examples and accompanying drawings, and the exemplary embodiments and descriptions thereof are only used for explaining the present invention and are not used as limitations of the present invention.
Examples
A horizontal hoisting tool for a nuclear power plant grillage 8 is shown in figures 1 and 2 and comprises a first suspender 1, a second suspender 2, a third suspender 3, a top hoisting plate 4, a bottom hoisting plate 5 and a plurality of suspenders 6;
when the hoisting tool is used, the first suspender 1 is connected with a hook of a crane through the suspender 6, and the axis of the first suspender 1 is parallel to the horizontal axis of the grillage 8; the second suspender 2 is connected to the right end of the first suspender 1 through a suspender 6, and the axis of the second suspender 2 is vertical to the axis of the first suspender 1; the tops of the top lifting plates 4 are connected with the second suspender 2 through the suspender 6, and the bottoms of the top lifting plates 4 are fixedly connected with the lifting lugs 9 at the top of the grillage 8; the third suspender 3 is connected to the left end of the first suspender 1 through a suspender 6, and the axis of the third suspender 3 is parallel to the axis of the second suspender 2; the top of the bottom lifting plate 5 is connected to the third suspender 3 through a suspender 6, and the bottom of the bottom lifting plate 5 is fixedly connected with a screw hole at the bottom of the grillwork 8.
In a nuclear power plant, a relatively common product is spent fuel, the specific activity of the spent fuel is high, a large amount of decay heat is released, and the spent fuel must be stored for a period of time until the radioactivity and the residual heat are reduced to a certain degree and then operated and treated.
At present, the common treatment mode of the spent fuel in the nuclear power station is as follows: the spent fuel discharged from the reactor is temporarily stored in a spent fuel pool, and a spent fuel storage grid 8 is arranged in the pool and can be used for storing new fuel and spent fuel components discharged from a reactor plant. When the grillwork 8 is cleaned, the grillwork 8 is washed from a water pool and decontaminated, then the cadmium grillwork 8 is horizontally hoisted to a flat car by using a hoisting tool, and then the cadmium grillwork is packaged and transported to a temporary storage yard. Traditional hoist and mount are rigid connection structure, and grillage 8 belongs to thin wall class precision equipment, and when adopting traditional lifting device hoist and mount grillage 8, if the accident collision takes place, under the effect of external force, lifting device can lead to the fact the extrusion to grillage 8 to lead to the grillage 8 to produce deformation, in addition because fuel assembly and the total clearance of storage grillage 8 cell are only 11mm, so the grillage 8 once deformation, then can not continue to use.
In the scheme, a novel horizontal hoisting tool is provided, and the traditional rigid connection mode is replaced by the mode of connecting the hoisting belts 6 among the hoisting tools, so that in the hoisting process, the angle between the first hoisting rod 1 and the second hoisting rod 2 or the third hoisting rod 3 can be freely adjusted according to the weight of a hoisted object, and the second hoisting rod 2 and the third hoisting rod 3 reach a relatively balanced state. If when the unexpected collision takes place, this kind of balanced state is broken under the effect of external force, and then makes second jib 2 and third jib 3 round first jib 1 reciprocating motion under the effect of external force to look for the balance point again, at this search balance point in-process, directly convert external force into the kinetic energy of second jib 2 and third jib 3, thereby the interact power between each jib disperses, offsets the moment of flexure that produces during the hoist and mount, in order to avoid causing the damage to grillage 8.
Further, in the present embodiment, as shown in fig. 3 and 4, the first suspension rod 1 includes a first bearing plate 101, a second bearing plate 102, a first fixing plate 103, a second fixing plate 104, a first sleeve 105, a second sleeve 106, a steel pipe, a clamping plate 107, and a plurality of shackles 7 for connecting with the slings 6;
the first fixing part is arranged along the vertical direction, the first sleeve 105 is welded on the right side face of the first fixing plate 103 along the horizontal direction, the first bearing plate 101 is fixedly arranged at the outer top of the first sleeve 105, and shackles 7 are arranged at the bottom of the first fixing plate 103 and the top of the first bearing plate 101;
the second fixing plate 104 is arranged in the vertical direction, the bottom of the second fixing plate 104 is provided with a shackle 7, the second sleeve 106 is arranged on the left side surface of the second fixing plate 104 in the horizontal direction, the shackle 7 is arranged on the top of the second bearing plate 102, and the bottom of the second bearing plate 102 is fixedly arranged on the outer top of the second sleeve 106; the clamping plate 107 is fixedly arranged on the left side surface of the second bearing plate 102, and a through hole is formed in the clamping plate 107;
one end of the steel pipe is fixedly arranged on the first sleeve 105, and the other end of the steel pipe penetrates through the through hole and then is fixedly arranged on the second sleeve 106.
As shown in fig. 5 and 6, the second suspension rod 2 comprises a third fixing plate 201, a fourth fixing plate 202, a third bearing plate 203, a fourth bearing plate 204, a fifth bearing plate 205, a sixth bearing plate 206, a first reinforcing plate 207, a second reinforcing plate 208, a third sleeve 209, a fourth sleeve 210, a first connecting steel pipe 211 and a plurality of shackles 7 for connecting the suspension straps 6;
the first reinforcing plate 207 is arranged along the horizontal direction, the top of the first reinforcing plate 207 is fixedly provided with a third bearing plate 203, and the bottom of the first reinforcing plate 207 is fixedly provided with a fourth bearing plate 204; the third fixing plate 201 is arranged along the vertical direction, the left side surface of the third fixing plate 201 is connected to the third bearing plate 203, the first reinforcing plate 207 and the fourth bearing plate 204, and the right side surface of the third fixing plate 201 is provided with a third sleeve 209 along the horizontal direction;
the second reinforcing plate 208 is arranged along the horizontal direction, a fifth bearing plate 205 is fixedly arranged at the top of the second reinforcing plate 208, and a sixth bearing plate 206 is fixedly arranged at the bottom of the first reinforcing plate 207; the fourth fixing plate 202 is arranged in the vertical direction, the right side surface of the fourth fixing plate 202 is connected to the fifth bearing plate 205, the second reinforcing plate 208 and the sixth bearing plate 206, and the left side surface of the fourth fixing plate 202 is provided with a fourth sleeve 210 in the horizontal direction;
the left end of the first connecting steel pipe 211 is fixedly arranged on the third sleeve 209, and the right end of the first connecting steel pipe 211 is fixedly arranged on the fourth sleeve 210;
The third suspender 3 comprises a fifth fixing plate, a sixth fixing plate, a seventh bearing plate, an eighth bearing plate, a ninth bearing plate, a tenth bearing plate, a third reinforcing plate, a fourth reinforcing plate, a fifth sleeve, a sixth sleeve, a second connecting steel pipe and a plurality of shackles 7 for connecting the suspender 6, wherein the length of the second connecting steel pipe is less than that of the first connecting steel pipe 211;
the third reinforcing plate is arranged along the horizontal direction, a seventh bearing plate is fixedly arranged at the top of the third reinforcing plate, and an eighth bearing plate is fixedly arranged at the bottom of the third reinforcing plate; the fifth fixing plate is arranged along the vertical direction, the left side surface of the fifth fixing plate is connected to the seventh bearing plate, the third reinforcing plate and the eighth bearing plate, and the right side surface of the fifth fixing plate is provided with a fifth sleeve along the horizontal direction;
the fourth reinforcing plate is arranged along the horizontal direction, a ninth bearing plate is fixedly arranged at the top of the fourth reinforcing plate, and a tenth bearing plate is fixedly arranged at the bottom of the first reinforcing plate 207; the sixth fixing plate is arranged along the vertical direction, the right side surface of the sixth fixing plate is connected with the ninth bearing plate, the fourth reinforcing plate and the tenth bearing plate, and the left side surface of the sixth fixing plate is provided with a sixth sleeve along the horizontal direction;
the left end of the second connecting steel pipe is fixedly arranged on the fifth sleeve, and the right end of the second connecting steel pipe is fixedly arranged on the sixth sleeve;
the shackles 7 are arranged at the top of the seventh bearing plate, the bottom of the eighth bearing plate, the top of the ninth bearing plate and the bottom of the tenth bearing plate.
As shown in fig. 7 and 8, the first bottom lifting plate 501 comprises an eleventh bearing plate 503 and a first mounting plate 504, one end of the eleventh bearing plate 503 is provided with a first lifting hole 505, the other end of the eleventh bearing plate 503 is fixedly connected with one end of the first mounting plate 504, and the other end of the first mounting plate 504 is provided with a first mounting hole 506; the second bottom lifting plate 502 comprises a twelfth bearing plate and a second mounting plate; the length of the twelfth bearing plate is greater than that of the eleventh bearing plate 503, one end of the twelfth bearing plate is provided with a second lifting hole, the other end of the twelfth bearing plate is fixedly connected with one end of the second mounting plate, and the other end of the second mounting plate is provided with a second mounting hole.
As shown in fig. 9, the top lifting plate 4 includes a thirteenth bearing plate 401, one end of the thirteenth bearing plate 401 is provided with a third lifting hole 402 for connecting the lifting strap 6, and the other end of the thirteenth bearing plate 401 is provided with 4 fixing through holes 403, the positions and sizes of the fixing through holes 403 are matched with the screw holes on the lifting lugs 9. When the lifting device is installed, the fixing through hole 403 on the bottom lifting plate 5 is in threaded connection with the screw hole on the lifting lug 9.
In this embodiment, the second boom 2 and the third boom 3 have the same structure, and the first bottom lifting plate 501 and the second bottom lifting plate 502 have the same structure, except that the length of the steel pipe for connection of the second boom 2 is longer than the length of the steel pipe for connection of the third boom 3, that is, the length of the first steel pipe for connection 211 is longer than the length of the second steel pipe for connection. The height of the first bottom lifting plate 5015 is less than the height of the second bottom lifting plate 502, i.e., the length of the twelfth bearing plate is greater than the length of the eleventh bearing plate 503. So that the stability of the framework 8 is maintained during the hoisting of the framework 8.
When the hoisting tool is used for hoisting the grillwork 8, the concrete operation steps are as follows:
(1) the shackle 7 on the first bearing plate 101 and the shackle 7 on the second bearing plate 102 are connected with an 8-ton flat sling 6 with the length of 3.5 meters, and the other end of the 8-ton flat sling 6 with the length of 3.5 meters is connected with a hook of a crane;
(2) the shackle 7 on the first fixing plate 103 is connected with two 8-ton flat straps 6 with the length of 0.55 meter, one flat strap 6 is connected with the shackle 7 on the third bearing plate 203, and the other flat strap 6 is connected with the shackle 7 on the fifth bearing plate 205; the shackle 7 on the second fixing plate 104 is connected with two 8-ton flat braces 6 with the length of 0.85 meter, wherein one flat brace 6 is connected with the shackle 7 on the seventh bearing, and the other flat brace 6 is connected with the shackle 7 on the ninth bearing plate;
(3) respectively connecting 8-ton flat straps 6 with the length of 0.5 meter to shackles 7 on a fourth bearing plate 204, a sixth bearing plate 206, an eighth bearing plate and a tenth bearing plate, wherein the flat straps 6 on the fourth bearing plate 204 and the sixth bearing plate 206 are respectively connected with first lifting holes 505 on two different top lifting plates 4, and the flat straps 6 on the eighth bearing plate and the tenth bearing plate are respectively connected with second lifting holes on two different bottom lifting plates 5;
(4) a first mounting hole 506 on the top lifting plate 4 is in threaded connection with a lifting lug 9 at the top of the grillage 8 through a bolt, and a second mounting hole on the bottom lifting plate 5 is in threaded connection with a threaded hole at the bottom of the grillage 8 through a bolt;
(5) the crane is slowly raised until the grid 8 is off the ground and is horizontally hoisted to the platform lorry.
Further, in the present embodiment, in order to increase the strength and rigidity of the first hanger bar 1, the steel pipe includes a specification of
The inside seamless steel pipe and the specification of
Wherein the inner seamless steel tube is fixedly arranged inside the outer seamless steel tube, the left end of the inner seamless steel tube is welded on the outer surface of the first sleeve 105, and the right end of the inner seamless steel tube is welded on the outer surface of the second sleeve 106.
In the nuclear power plant, the cadmium lattice 8 with the largest specification of 6 × 6 is used most, the outer shape size is 4425mm × 1840mm × 1840mm, the mass is 7982kg, and in the embodiment, the specification of 6 × is adopted
The inside seamless steel pipe and the specification of
The outer seamless steel pipe can enable the first suspender 1 to effectively bear 8 tons of load, and can meet the use requirements of grillage 8 with various specifications.
The use method of the horizontal hoisting tool for the nuclear power plant framework 8 comprises the following steps:
the left end and the right end of a second suspender 2 are connected with the right end of a first suspender 1, the left end and the right end of a third suspender 3 are connected with the left end of the first suspender 1, and the left end and the right end of the first suspender 1 are connected with a crane;
connecting a plurality of top lifting plates 4 to the second suspender 2, and connecting a plurality of bottom lifting plates 5 to the third suspender 3;
a plurality of top lifting plates 4 are connected to lifting lugs 9 at the top of the framework 8, and a plurality of bottom lifting plates 5 are connected to screw holes at the bottom of the framework 8.
In this scheme, the mode that 6 connections of suspender were all adopted to replace traditional rigid connection's connected mode between each jib of this horizontal hoisting instrument for if the accident collision takes place in the hoist and mount process, the bending moment that produces when offsetting the hoist and mount can disperse the interact power between each jib, thereby avoids causing the damage to framework 8.
Further, in the present embodiment, the second boom 2 and the third boom 3 are both connected to the first boom 1 by a harness 6; the top lifting plate 4 and the bottom lifting plate 5 are respectively connected with the second suspender 2 and the third suspender 3 through suspenders 6; the first suspender 1 is connected with a hook of a crane through a suspender 6.
Further, in the present embodiment, the top lifting plate 4 and the bottom lifting plate 5 are each connected to the lattice 8 by bolts.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or the orientations or positional relationships that the products of the present invention usually place when in use, and are only used for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Finally, it should be noted that: the above-mentioned embodiments are only specific embodiments of the present invention, which are used for illustrating the technical solutions of the present invention and not for limiting the same, and the protection scope of the present invention is not limited thereto, although the present invention is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: any person skilled in the art can modify or easily conceive of the technical solutions described in the foregoing embodiments or equivalent substitutions of some technical features within the technical scope of the present disclosure; such modifications, changes or substitutions do not depart from the spirit and scope of the present invention in its spirit and scope. Are intended to be covered by the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. A nuclear power station grillage horizontal hoisting tool is characterized by comprising a first suspender (1), a second suspender (2), a third suspender (3), a top hoisting plate (4) and a bottom hoisting plate (5); the length of the second suspender (2) is larger than that of the third suspender (3);
when the hoisting tool is in use, the first boom (1) is connected with a hook of a crane, and the axis of the first boom (1) is parallel to the horizontal axis of the lattice (8); the second suspender (2) is connected to the right end of the first suspender (1), and the axis of the second suspender (2) is vertical to the axis of the first suspender (1); the top of the top lifting plate (4) is connected with the second suspender (2), and the bottom of the top lifting plate (4) is fixedly connected with a lifting lug (9) at the top of the grillage (8); the third suspender (3) is connected to the left end of the first suspender (1), and the axis of the third suspender (3) is parallel to the axis of the second suspender (2); the top of the bottom lifting plate (5) is connected to the third suspender (3), and the bottom of the bottom lifting plate (5) is fixedly connected with a screw hole at the bottom of the grillage (8).
2. The grid horizontal hoisting tool of the nuclear power plant as claimed in claim 1, wherein the first hanger rod (1) comprises a first bearing plate (101), a second bearing plate (102), a first fixing plate (103), a second fixing plate (104), a first sleeve (105), a second sleeve (106), a steel pipe and a clamping plate (107); the length of the second bearing plate (102) is greater than the length of the first bearing plate (101);
the first fixing plate (103) is arranged in the vertical direction, the first sleeve (105) is fixedly arranged on the right side face of the first fixing plate (103) in the horizontal direction, the first bearing plate (101) is fixedly arranged on the outer top of the first sleeve (105), and shackles (7) are arranged at the bottom of the first fixing plate (103) and the top of the first bearing plate (101);
the second fixing plate (104) is arranged along the vertical direction, the shackle (7) is arranged at the bottom of the second fixing plate (104), the second sleeve (106) is arranged on the left side face of the second fixing plate (104) along the horizontal direction, the shackle (7) is arranged at the top of the second bearing plate (102), and the bottom of the second bearing plate (102) is fixedly arranged at the outer top of the second sleeve (106); the clamping plate (107) is fixedly arranged on the left side surface of the second bearing plate (102), and a through hole is formed in the clamping plate (107);
one end of the steel pipe is fixedly arranged on the first sleeve (105), and the other end of the steel pipe penetrates through the through hole and then is fixedly arranged on the second sleeve (106).
3. The grid horizontal hoisting tool for nuclear power plant as claimed in claim 2, wherein the steel pipe comprises an inner steel pipe (108) and an outer steel pipe (109), the inner steel pipe (108) is fixedly arranged inside the outer steel pipe (109), the left end of the inner steel pipe (108) is fixedly arranged on the first sleeve (105), and the right end of the inner steel pipe (108) is fixedly arranged on the second sleeve (106).
4. The grid horizontal lifting tool of the nuclear power plant as claimed in any one of claims 1 to 3, wherein the second hanger rod (2) comprises a third fixing plate (201), a fourth fixing plate (202), a third bearing plate (203), a fourth bearing plate (204), a fifth bearing plate (205), a sixth bearing plate (206), a first reinforcing plate (207), a second reinforcing plate (208), a third sleeve (209), a fourth sleeve (210) and a first connecting steel pipe (211);
the first reinforcing plate (207) is arranged along the horizontal direction, a third bearing plate (203) is fixedly arranged at the top of the first reinforcing plate (207), and a fourth bearing plate (204) is fixedly arranged at the bottom of the first reinforcing plate (207); the third fixing plate (201) is arranged along the vertical direction, the left side surface of the third fixing plate (201) is connected to the third bearing plate (203), the first reinforcing plate (207) and the fourth bearing plate (204), and the right side surface of the third fixing plate (201) (201) is provided with a third sleeve (209) along the horizontal direction;
the second reinforcing plate (208) is arranged along the horizontal direction, a fifth bearing plate (205) is fixedly arranged at the top of the second reinforcing plate (208), and a sixth bearing plate (206) is fixedly arranged at the bottom of the first reinforcing plate (207); the fourth fixing plate (202) is arranged along the vertical direction, the right side surface of the fourth fixing plate (202) is connected to the fifth bearing plate (205), the second reinforcing plate (208) and the sixth bearing plate (206), and the left side surface of the fourth fixing plate (202) is provided with a fourth sleeve (210) along the horizontal direction;
the left end of the first connecting steel pipe (211) is fixedly arranged on the third sleeve (209), and the right end of the first connecting steel pipe (211) is fixedly arranged on the fourth sleeve (210);
the top of the third bearing plate (203), the bottom of the fourth bearing plate (204), the top of the fifth bearing plate (205) and the bottom of the sixth bearing plate (206) are all provided with shackles (7).
5. The grid horizontal hoisting tool of the nuclear power plant as claimed in claim 4, wherein the third hanger rod (3) comprises a fifth fixing plate, a sixth fixing plate, a seventh bearing plate, an eighth bearing plate, a ninth bearing plate, a tenth bearing plate, a third reinforcing plate, a fourth reinforcing plate, a fifth sleeve, a sixth sleeve and a second connecting steel pipe, wherein the length of the second connecting steel pipe is less than that of the first connecting steel pipe (211);
the third reinforcing plate is arranged along the horizontal direction, a seventh bearing plate is fixedly arranged at the top of the third reinforcing plate, and an eighth bearing plate is fixedly arranged at the bottom of the third reinforcing plate; the fifth fixing plate is arranged in the vertical direction, the left side surface of the fifth fixing plate is connected to the seventh bearing plate, the third reinforcing plate and the eighth bearing plate, and the right side surface of the fifth fixing plate is provided with a fifth sleeve in the horizontal direction;
the fourth reinforcing plate is arranged along the horizontal direction, a ninth bearing plate is fixedly arranged at the top of the fourth reinforcing plate, and a tenth bearing plate is fixedly arranged at the bottom of the first reinforcing plate (207); the sixth fixing plate is arranged along the vertical direction, the right side surface of the sixth fixing plate is connected to the ninth bearing plate, the fourth reinforcing plate and the tenth bearing plate, and a sixth sleeve is arranged on the left side surface of the sixth fixing plate along the horizontal direction;
the left end of the second connecting steel pipe is fixedly arranged on the fifth sleeve, and the right end of the second connecting steel pipe is fixedly arranged on the sixth sleeve;
the top of the seventh bearing plate, the bottom of the eighth bearing plate, the top of the ninth bearing plate and the bottom of the tenth bearing plate are provided with the shackles (7).
6. The grid horizontal lifting tool of a nuclear power plant as claimed in claim 5, characterized in that the bottom lifting plate (5) comprises a first bottom lifting plate (501) and a second bottom lifting plate (502);
the first bottom lifting plate (501) comprises an eleventh bearing plate (503) and a first mounting plate (504), one end of the eleventh bearing plate (503) is provided with a first lifting hole (505), the other end of the eleventh bearing plate (503) is fixedly connected with one end of the first mounting plate (504), and the other end of the first mounting plate (504) is provided with a first mounting hole (506); the second bottom lifting plate (502) comprises a twelfth bearing plate and a second mounting plate; the length of the twelfth bearing plate is greater than that of the eleventh bearing plate (503), one end of the twelfth bearing plate is provided with a second lifting hole, the other end of the twelfth bearing plate is fixedly connected with one end of the second mounting plate, and the other end of the second mounting plate is provided with a second mounting hole.
7. The grid horizontal hoisting tool for nuclear power plant as claimed in claim 6, wherein the top hoisting plate (4) comprises a thirteenth bearing plate (401), one end of the thirteenth bearing plate (401) is provided with a third hoisting hole (402) for connecting the hoisting strap (6), and the other end of the thirteenth bearing plate (401) is provided with a fixing through hole (403) for fixedly connecting with a hoisting lug (9).
8. Use of the horizontal lifting tool for a nuclear power plant trellis according to any one of claims 1 to 7, characterized by comprising the following steps:
the left end and the right end of the second suspender (2) are connected to the right end of the first suspender (1), the left end and the right end of the third suspender (3) are connected to the left end of the first suspender (1), and the left end and the right end of the first suspender (1) are connected to a hook of a crane;
connecting the top of the top lifting plate (4) to the second hanger bar (2), and connecting the top of the bottom lifting plate (5) to the third hanger bar (3);
and connecting the bottom of the top lifting plate (4) to a lifting lug (9) at the top of the lattice (8), and connecting the bottom of the bottom lifting plate (5) to a screw hole at the bottom of the lattice (8).
9. Use of a nuclear power plant trellis horizontal lifting tool according to claim 8, characterized in that the second boom (2) and the third boom (3) are both connected to the first boom (1) by a sling (6); the top lifting plate (4) and the bottom lifting plate (5) are respectively connected with the second suspender (2) and the third suspender (3) through suspenders (6); the first suspender (1) is connected with a hook of the crane through a suspender (6).
10. Use of the horizontal lifting tool for nuclear power plant grids according to claim 9, characterized in that the top lifting plate (4) and the bottom lifting plate (5) are both connected to the grid (8) by means of bolts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010419174.7A CN111573495A (en) | 2020-05-18 | 2020-05-18 | Nuclear power station grid horizontal hoisting tool and use method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010419174.7A CN111573495A (en) | 2020-05-18 | 2020-05-18 | Nuclear power station grid horizontal hoisting tool and use method thereof |
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| CN111573495A true CN111573495A (en) | 2020-08-25 |
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| CN202010419174.7A Pending CN111573495A (en) | 2020-05-18 | 2020-05-18 | Nuclear power station grid horizontal hoisting tool and use method thereof |
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