Multifunctional maintenance tool for nuclear power nuclear island radiation area maintenance

Abstract

The utility model discloses a multifunctional maintenance tool for nuclear power nuclear island radiation area maintenance, which comprises an electric wrench, a multifunctional dismounting and mounting head is mounted on a rotating shaft in the electric wrench, the multifunctional dismounting and mounting head comprises a screw drilling tool, and a plurality of movable clamping plates are arranged on the periphery of the screw drilling tool. A synchronous expansion and contraction driving device is mounted among the plurality of movable clamping plates; according to the multifunctional overhauling tool for overhauling the radiation area of the nuclear power island, through synchronous horizontal pushing of the first horizontal power source, the relative horizontal position of the movable clamping plate and the screw drilling tool is adjusted, a screwdriver and a wrench which are commonly used for nuclear power overhauling are combined together, and therefore the multifunctional overhauling tool has multiple functions; according to the multifunctional dismounting and mounting head, a screwdriver or a wrench does not need to be independently taken back and forth through manual reciprocating, automatic adjustment and switching can be achieved, the multifunctional dismounting and mounting head has the multi-size bolt rotating function through the synchronous expansion and synchronous contraction driving device, and therefore the nuclear power overhaul efficiency is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of maintenance of nuclear power nuclear island radiation zone, in particular to a multifunctional maintenance tool for maintenance of nuclear power nuclear island radiation zone. Background Art

[0002] When inspecting and repairing the radiation area of ​​a nuclear power plant's nuclear island, taking into account the particularity of nuclear power radiation hazards, maintenance personnel are required to complete the inspection and repair of the radiation area as much as possible within a limited time.

[0003] At present, the common tools such as wrenches and screwdrivers used in nuclear power maintenance are all separate individuals with single functions. In view of this, we propose a multifunctional maintenance tool for maintenance of nuclear power nuclear island radiation area. Utility Model Content

[0004] The utility model aims to solve the problem that the common tools such as wrenches and screwdrivers used in nuclear power maintenance in the prior art are all separate entities with single functions, and proposes a multifunctional maintenance tool for maintenance of nuclear power nuclear island radiation area.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A multifunctional maintenance tool for maintenance of a nuclear power plant radiation zone, comprising an electric wrench, a multifunctional disassembly and installation head being installed on a rotating shaft in the electric wrench, the multifunctional disassembly and installation head comprising a screw drill, a plurality of movable clamping plates being arranged on the periphery of the screw drill, the plurality of movable clamping plates being synchronously pushed horizontally by a horizontal power source 1, and being used for adjusting the relative horizontal position of the movable clamping plates and the screw drill;

[0007] A synchronous expansion and contraction driving device is installed between the plurality of movable clamps.

[0008] Preferably, the multifunctional disassembly and installation head also includes a gear box, the screw drill is installed on the outer end face of the gear box, the inner end face of the gear box is connected to a limit joint, and the limit joint is connected to the rotating shaft in the electric wrench.

[0009] Preferably, a plurality of the movable splints are evenly distributed and installed on the periphery of the gear box, a slide groove is provided on the inner end surface of the movable splint, and the horizontal power source 1 includes a motor 1, a screw, a movable ring and a plurality of fixed blocks.

[0010] Preferably, several of the fixed blocks are respectively installed on the inner end faces of the movable splint, a U-shaped groove is provided in the fixed block, the periphery of the movable ring is provided in several of the U-shaped grooves, the movable ring is installed on the periphery of the limit joint, the motor 1 is installed on the gear box, the output shaft of the motor 1 is connected to the screw through a coupling, and the screw is connected to the movable ring.

[0011] Preferably, the synchronous expansion and contraction driving device includes a worm gear reduction motor and three limit gears 1, a plurality of gears 2 are installed between the three limit gears 1, the limit gears 1 and the gears 2 are both installed in the gear box, a plurality of transmission rods are alternately installed on both sides of the plurality of gears 2, a slide plate is installed at the end of the transmission rod, the slide plate passes through the gear box, and a slider is installed at the end of the slide plate.

[0012] Preferably, a plurality of the sliding blocks are respectively installed in a plurality of the sliding grooves, the worm gear reduction motor is installed on the limit joint, and the output shaft in the worm gear reduction motor is interconnected with a limit gear through a coupling.

[0013] Compared with the prior art, the utility model provides a multifunctional maintenance tool for maintenance of the radiation area of ​​a nuclear power plant nuclear island, which has the following beneficial effects:

[0014] 1. The multifunctional maintenance tool for the maintenance of the radiation zone of the nuclear island of a nuclear power plant is used to adjust the relative horizontal positions of the movable splint and the screw drill through the synchronous horizontal push of the horizontal power source. When the end of the screw drill bit exceeds the end of the three movable splints, the forward and reverse rotation of the electric wrench shaft can drive the screw drill to rotate forward and reverse through the limit joint and the gear box, which is used to screw the matching screws on the equipment being repaired. At the same time, the fast-rotating screw drill can drill holes in some objects. When the ends of the three movable splints exceed the screw drill bit, the matching bolts can be clamped and rotated. In addition to the above-mentioned functions of screwing and drilling, the function of screwing bolts is added again, so that the screwdriver and wrench commonly used in nuclear power maintenance are combined with each other, so that it has multifunctionality, and there is no need to manually reciprocate to take the screwdriver or wrench separately, and it can be automatically adjusted and switched, thereby greatly improving the efficiency of nuclear power maintenance, so that maintenance personnel can complete maintenance in a shorter time.

[0015] 2. The multifunctional maintenance tool for the maintenance of the radiation zone of the nuclear island of a nuclear power plant drives a limit gear 1 to rotate forward or reverse through the output shaft of the turbine worm reduction motor in the synchronous expansion and contraction drive device, which is used to drive the two gears 2 to rotate synchronously, thereby driving the head ends of the three transmission rods to move in a synchronous circle, and drives the three slides to extend and retract along the outer end surface of the gear box through the three transmission rods, which is used to drive the three slides to expand or contract synchronously, thereby realizing the synchronous expansion or contraction of the three movable splints, and is used to adapt to hexagonal column head bolts of different sizes, so that the multifunctional disassembly and installation head has the function of rotating bolts of multiple sizes. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a structural schematic diagram of a multifunctional maintenance tool for maintenance of a nuclear power nuclear island radiation area proposed by the utility model;

[0017] Figure 2 This is a structural schematic diagram of a multifunctional disassembly and installation head in a multifunctional maintenance tool for maintenance of a nuclear power plant nuclear island radiation area proposed by the utility model;

[0018] Figure 3 This is a schematic diagram of the structure of a synchronous expansion and contraction driving device in a multifunctional maintenance tool for maintenance of a radiation zone of a nuclear island of a nuclear power plant proposed by the utility model;

[0019] Figure 4 This is an exploded view of a synchronous expansion and contraction drive device in a multifunctional maintenance tool for maintenance of a radiation zone of a nuclear island of a nuclear power plant proposed by the utility model.

[0020] In the figure:

[0021] 1. Electric wrench;

[0022] 2. Multifunctional disassembly and installation head; 201. Gear box; 202. Movable splint; 203. Slide groove; 204. Fixed block; 205. Movable ring; 206. Motor 1; 207. Screw; 208. Limit joint; 209. Screw drill; 210. Worm gear reduction motor; 211. Sliding block; 212. Limit gear 1; 213. Slide plate; 214. Transmission rod; 215. Gear 2. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0024] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0025] Reference Figure 1-4 A multifunctional maintenance tool for maintenance of nuclear island radiation area of ​​nuclear power plant, including an electric wrench 1, a multifunctional disassembly and installation head 2 is installed on the rotating shaft of the electric wrench 1, and the multifunctional disassembly and installation head 2 includes a gear box 201, the gear box 201 is in the shape of a regular hexagonal column as a whole, and corresponds to the hexagonal column head bolts commonly used in nuclear power, and a limited joint 208 is fixedly connected to the inner end face of the gear box 201, and the limited joint 208 is fixedly connected to the rotating shaft in the electric wrench 1, and a screw drill 209 is fixedly installed on the central axis of the outer end face of the gear box 201, and the screw drill 209 is fixedly installed on the central axis of the outer end face of the gear box 201. The cutter head of 209 is cross-shaped and is a commonly used cross screwdriver. Through the forward and reverse rotation of the rotating shaft of the electric wrench 1, the screw drill 209 can be driven to rotate forward and reverse through the limit joint 20 and the gear box 201, and is used to screw the matching screws on the equipment being repaired. At the same time, the fast-rotating screw drill 209 can drill holes in some objects, and the outer surface of the screw drill 209 can also be provided with a spiral groove for drilling and chip removal, that is, the electric wrench 1 drives the screw drill 209 to rotate, so that the screw drill 209 has the functions of screwing and drilling.

[0026] In this embodiment, a plurality of movable splints 202 are provided on the periphery of the screw drill 209. In this application, there are three movable splints 202, which are mainly used for tightening hexagonal stud bolts of different sizes. The three movable splints 202 are installed on the periphery of the gear box 201 in the shape of an equilateral triangle, opposite to the three sides of the hexagonal stud bolts, and have higher stability in clamping and rotating bolts than two opposite movable splints 202. The three movable splints 202 are pushed horizontally by a horizontal power source 1 synchronously to adjust the relative horizontal positions of the movable splints 202 and the screw drill 209. When the ends of the three movable splints 202 exceed the blade of the screw drill 209, they can clamp and rotate the matching bolts, so that the present application adds the function of tightening bolts in addition to the functions of tightening screws and drilling holes.

[0027] It should be added that a slide groove 203 is provided on the inner end surface of the movable splint 202, and the horizontal power source 1 includes a motor 1 206, a screw 207, a movable ring 205 and three fixed blocks 204. The three fixed blocks 204 are respectively fixedly installed on the inner end surface of the movable splint 202, and a U-shaped groove is provided in the fixed block 204. The outer periphery of the movable ring 205 is slidably installed in the three U-shaped grooves, so that the movable splint 202 can move along the radial direction of the movable ring 205, and the inner ring of the movable ring 205 is slidably installed on the outer periphery of the limit joint 208, that is, the movable splint 202 can move along the radial direction of the movable ring 205. The inner ring of the movable ring 205 is slidably installed on the outer periphery of the limit joint 208, that is, the movable The ring 205 can slide along the limit joint 208, and the motor 206 is fixedly installed on the gear box 201. The output shaft of the motor 206 is connected to the screw 207 through a coupling. The screw 207 and the limit joint 208 are parallel to each other. The screw 207 and the movable ring 205 are threadedly connected to each other. The screw 207 is driven by the output shaft of the motor 206 to rotate forward or reverse, which is used to drive the threaded movable ring 205 to slide along the limit joint 208, and is used to adjust the relative horizontal position of the movable splint 202 and the screw drill 209.

[0028] In this embodiment, a synchronous expansion and contraction driving device is installed between several movable splints 202, and the synchronous expansion and contraction driving device includes a worm gear reduction motor 210 and three limit gears 212. In this application, the worm gear reduction motor 210 adopts a meshing connected worm gear with a self-locking function, so that the output shaft of the worm gear reduction motor 210 has a self-locking function. The three limit gears 212 are arranged in an equilateral triangle. Two parallel gears 215 are meshed and installed between the three limit gears 212. The limit gear 212 is rotatably connected to the gear box 201, and the two gears 2215 are connected to the gear box 201. 15 is limited at three points by three limiting gears 1 212, and is used to limit the movement of gear 2 215 on the vertical plane. Three transmission rods 214 are alternately installed on both sides of the two gears 215, two of which are respectively installed on the periphery of the two gears 215 in contact with each other, and are used to limit the horizontal movement of the two gears 215. The two sides of the remaining transmission rod 214 and the inner side surfaces of the two gears 215 are in contact with each other, thereby completing the clamping of the horizontal position of the two gears 215, that is, the limiting installation of the two gears 215 is completed by the three limiting gears 1 212 and the three transmission rods 214.

[0029] In this embodiment, the head ends of the three transmission rods 214 are in the shape of right triangles and are rotatably installed on the outer edges of the two gears 215 respectively. The end of the transmission rod 214 is rotatably installed with a slide plate 213. The slide plate 213 slides vertically through the outer end surface of the gear box 201. The end of the slide plate 213 is fixedly installed with a slider 211. Several sliders 211 are respectively slidably installed in several slide grooves 203. The worm gear reduction motor 210 is fixedly installed on the limit joint 208. The output shaft in the worm gear reduction motor 210 is fixedly connected through a coupling and a limit gear 1 212.

[0030] It can be further supplemented that a battery is fixedly installed on the gear box 201, and the battery is interconnected with the motor 1 206 and the worm gear reduction motor 210 through wires. The output shaft of the worm gear reduction motor 210 drives a limit gear 1 212 to rotate forward or reverse, which is used to drive the two gears 215 to rotate synchronously, thereby driving the head ends of the three transmission rods 214 to move in circles synchronously, and driving the three slides 213 to extend and retract along the outer end surface of the gear box 201 through the three transmission rods 214, which is used to drive the three sliders 211 to expand or contract synchronously, thereby realizing the synchronous expansion or contraction of the three movable splints 202, which is used to adapt to hexagonal stud bolts of different sizes, so that the multifunctional disassembly and installation head 2 has the function of rotating bolts of multiple sizes.

[0031] In the utility model, when the multifunctional maintenance tool for the maintenance of the radiation zone of the nuclear island of a nuclear power plant is used, the output shaft of the motor 206 is connected to the screw 207 through a coupling, the screw 207 and the limit joint 208 are parallel to each other, the screw 207 and the movable ring 205 are threadedly connected to each other, and the screw 207 is driven to rotate forward or reversely through the output shaft of the motor 206, which is used to drive the threaded movable ring 205 to slide along the limit joint 208, and is used to adjust the relative horizontal position of the movable splint 202 and the screw drill 209. When the end of the screw drill 209 head exceeds the ends of the three movable splints 202, the screw drill 209 can be driven to rotate forward and reversely through the limit joint 20 and the gear box 201 through the forward and reverse rotation of the rotating shaft of the electric wrench 1, and is used to screw the matching screws on the equipment to be repaired. At the same time, the fast-rotating screw drill 209 can drill holes in some objects, and a limit gear 212 is driven to rotate forward through the output shaft of the worm gear reduction motor 210. Or reverse, used to drive the two gears 215 to rotate synchronously, thereby driving the head ends of the three transmission rods 214 to move in circles synchronously, and driving the three slide plates 213 to extend and retract along the outer end surface of the gear box 201 through the three transmission rods 214, used to drive the three sliders 211 to expand or contract synchronously, thereby realizing the synchronous expansion or contraction of the three movable splints 202, which are used to adapt to hexagonal column head bolts of different sizes, so that the multifunctional disassembly and installation head 2 has the function of screwing multi-size bolts on the basis of the above-mentioned drilling and screwing functions. The ends of the three movable splints 202 exceed the blade head of the screw drill 209, which can clamp and rotate the matching bolts, so that the screwdrivers and wrenches commonly used in nuclear power maintenance are combined with each other, so that they have multifunctionality, and do not need to manually go back and forth to use the screwdriver or wrench separately, and can be automatically adjusted and switched, thereby greatly improving the efficiency of nuclear power maintenance, so that maintenance personnel can complete the maintenance in a shorter time.

[0032] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A multifunctional maintenance tool for maintenance of a nuclear power plant radiation zone, comprising an electric wrench (1), characterized in that: A multifunctional disassembly and installation head (2) is installed on the rotating shaft of the electric wrench (1), and the multifunctional disassembly and installation head (2) includes a screw drill (209). A plurality of movable clamping plates (202) are arranged on the periphery of the screw drill (209). The plurality of movable clamping plates (202) are synchronously pushed horizontally by a horizontal power source 1 to adjust the relative horizontal position of the movable clamping plates (202) and the screw drill (209); A synchronous expansion and contraction driving device is installed between the plurality of movable clamps (202), and a sliding groove (203) is provided on the inner end surface of the movable clamp (202).

2. A multifunctional maintenance tool for maintenance of nuclear power nuclear island radiation area according to claim 1, characterized in that: The multifunctional disassembly and installation head (2) further comprises a gear box (201), the screw drill (209) is mounted on the outer end surface of the gear box (201), the inner end surface of the gear box (201) is connected to a limit joint (208), and the limit joint (208) is connected to a rotating shaft in the electric wrench (1).

3. A multifunctional maintenance tool for maintenance of nuclear power nuclear island radiation area according to claim 2, characterized in that: A plurality of movable clamping plates (202) are evenly distributed and installed on the periphery of the gear box (201), and the horizontal power source 1 includes a motor 1 (206), a screw rod (207), a movable ring (205) and a plurality of fixed blocks (204).

4. A multifunctional maintenance tool for maintenance of nuclear power nuclear island radiation area according to claim 3, characterized in that: A plurality of the fixed blocks (204) are respectively mounted on the inner end faces of the movable splint (202); a U-shaped groove is provided inside the fixed block (204); the outer periphery of the movable ring (205) is provided in the plurality of the U-shaped grooves; the movable ring (205) is mounted on the outer periphery of the limit joint (208); the motor 1 (206) is mounted on the gear box (201); the output shaft of the motor 1 (206) is connected to the screw (207) via a coupling; the screw (207) is connected to the movable ring (205).

5. A multifunctional maintenance tool for maintenance of nuclear power nuclear island radiation area according to claim 2, characterized in that: The synchronous expansion and contraction driving device comprises a worm gear reduction motor (210) and three limit gear ones (212); a plurality of gear ones (215) are installed between the three limit gear ones (212); the limit gear ones (212) and the gear ones (215) are both installed in the gear box (201); a plurality of transmission rods (214) are alternately installed on both sides of the plurality of gear ones (215); a slide plate (213) is installed at the end of the transmission rod (214); the slide plate (213) passes through the gear box (201); and a slider (211) is installed at the end of the slide plate (213).

6. A multifunctional maintenance tool for maintenance of nuclear power nuclear island radiation area according to claim 5, characterized in that: A plurality of the sliders (211) are respectively installed in a plurality of the slide grooves (203), the worm gear reduction motor (210) is installed on the limit joint (208), and the output shaft in the worm gear reduction motor (210) is connected to one of the limit gears (212) via a coupling.

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