JP2016175723A - Position adjustment device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a position adjustment device capable of accurately adjusting the position of a structure suspended by a crane device even in an area inaccessible to a person.SOLUTION: A position adjustment device comprises: a plurality of guide rollers 11 provided so as to surround a structure accommodation hole 4; a plurality of moving mechanisms 12 for moving the plurality of guide rollers 11 between an initial position and a push-in position; a push-in amount detection sensor 14 for detecting the push-in amount of the guide rollers 11 by the moving mechanisms 12; and a control unit 15 for controlling the moving mechanisms 12 on the basis of detection results of the push-in amount detection sensor 14. When a suspended structure 2 moves to immediately above the structure accommodation hole 4 and moves to a position facing the plurality of guide rollers 11, the control unit 15 controls the moving mechanisms 12 to move the plurality of guide rollers 11 from the initial position to the push-in position.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a position adjusting device that adjusts the position of a suspended structure.

  2. Description of the Related Art Conventionally, there is known a core insertion device for performing positioning when a cylindrical core is inserted into a hole formed in a magnet case of an electromagnetic brake (see, for example, Patent Document 1). This core insertion device is composed of a positioning jig and a guide jig, and the guide jig has three guide rollers that respectively contact the outer peripheral surface of the cylinder of the positioning jig. The three guide rollers positioned by the positioning jig come into contact with the outer peripheral surface of the core to be inserted after the positioning jig is extracted. Thereby, the core is smoothly inserted into the hole of the magnet case.

JP 2013-227102 A

  However, in the core insertion device described in Patent Document 1, an operator needs to attach a positioning jig to the hole. For this reason, when the work area is, for example, an area where it is difficult for a person to enter, the core insertion work by the core insertion device becomes difficult. Moreover, in the core insertion apparatus described in Patent Document 1, the three guide rollers are in a fixed state. For this reason, when the core is brought into contact with the three guide rollers, it is necessary to accurately align the position of the core with respect to the three guide rollers. In other words, when the positions of the cores with respect to the three guide rollers are slightly different, it may be difficult to insert the cores due to the cores contacting the upper parts of the three guide rollers.

  Then, this invention makes it a subject to provide the position adjustment apparatus which can adjust the position of the structure suspended with the crane apparatus accurately even if it is an area | region where a person cannot enter easily.

  The position adjusting device of the present invention is a position adjusting device that adjusts the position of the structure when the structure suspended by the crane device is moved to the installation position, and is provided so as to surround the installation position. The pushing member, a plurality of pushing members, an initial position separated from the structure suspended just above the installation position, and a horizontal direction with respect to the structure suspended just above the installation position A plurality of moving mechanisms each moving between the pushing positions, a pushing amount detecting unit for detecting the pushing amount of the pushing member by the moving mechanism, and the moving mechanism based on a detection result of the pushing amount detecting unit. A control unit for controlling, and when the structure is installed at the installation position, a plurality of the pushing members are positioned at the initial position and are suspended. When the structure moves to a position directly above the installation position and moves to a position facing the plurality of pushing members, the moving mechanism is controlled to move the pushing members from the initial position to the pushing position. It is moved to a position.

  According to this configuration, since the pushing member can be positioned at the initial position when the structure is installed at the installation position, the structure can be easily moved to a position facing the pushing member. Thereafter, the control unit can push the structure by the plurality of pushing members by moving the plurality of pushing members from the initial position to the pushing position. For this reason, the position of the structure can be adjusted with high accuracy by a plurality of pushing members surrounding the installation position without a person entering the work area. In this state, the structure can be accurately installed at the installation position by moving the structure to the installation position using the crane device. In addition, the movement of the structure by the crane apparatus includes an upward movement and a downward movement in the vertical direction. Thus, the position of the structure can be positively adjusted using a plurality of pushing members. The moving mechanism may be configured to rotate a drive shaft of a mechanical jack (for example, a screw jack) using a motor or the like, or may be a hydraulic mechanism using a hydraulic cylinder, There is no particular limitation.

  Moreover, it is preferable that the said installation position is a structure accommodation part which can be located in the downward direction of a perpendicular direction rather than the installation surface in which the said pushing member is installed, and can accommodate the said structure.

  According to this configuration, the structure whose position has been adjusted by the plurality of pushing members can be accurately inserted into the structure housing portion by being lowered by the crane device. In addition, a bottomed hole may be sufficient as a structure accommodating part, and a through-hole may be sufficient, and it is not specifically limited.

  In addition, a movement amount detection unit that detects a movement amount in the vertical direction of the structure suspended by the crane device is further provided, and the upper surface of the structure has a thick upper side portion and a vertical direction on the outer surface of the structure. A step part is formed by a lower part of the lower part of the control unit, and when the structure is lowered, the control part causes the plurality of pushing members to pass through the step part from the lower part to the upper side. When moving relative to the part, the moving mechanism is controlled so that the plurality of pushing members are separated from the structure at a position where the plurality of pushing members are opposed to the lower part, and the structure is lowered. Thereafter, it is preferable to control the moving mechanism so that the plurality of pushing members push the structure at a position where the plurality of pushing members face the upper side portion.

  According to this configuration, even when the outer surface of the structure has a stepped portion, the plurality of pushing members can be once separated from the structure. Therefore, when the structure is lowered, the structure has a plurality of pushing members. The structure can be smoothly lowered without being caught on the surface.

  In addition, an inclination detection unit that detects an inclination of the structure with respect to a reference posture is further provided, and the control unit determines that the structure is inclined from the reference posture based on a detection result of the inclination detection unit. In this case, after the structure is lifted by the crane device and the structure is returned to the reference posture, the pushing amount of the pushing member positioned on the upper side of the structure when tilted is large from the initial position. Thus, while correcting the pushing position, the pushing position is corrected so that the pushing amount of the pushing member located on the lower side of the structure from the initial position during tilting becomes small. ,preferable.

  According to this configuration, the structure can be adjusted to an optimum position by correcting the pushing amount of the pushing member even when the structure is inclined due to the lower side of the structure being in contact or the like. it can. Note that the inclination detection unit may be an inclination sensor provided in the crane apparatus, or may be a plurality of load sensors that respectively detect tensions of a plurality of wires connecting the crane apparatus and the structure.

  Moreover, it is preferable that the said pushing member is a guide roller which roll-contacts to the outer surface of the said structure.

  According to this configuration, when the structure is lowered, the guide roller rolls along the outer surface of the structure, so that the structure can be smoothly lowered. The guide roller is configured using a resin material or the like.

  The pushing member is a guide bar that contacts the outer surface of the structure, and the contact surface of the guide bar that contacts the structure is formed as a curved surface that contacts the structure and is covered with a resin material. It is preferable that

  According to this configuration, the guide bar is in sliding contact with the outer surface of the structure when the structure is lowered. At this time, the contact surface of the guide bar is formed in a curved surface and is covered with the resin material, and thus smoothly contacts the structure. For this reason, the position of the structure can be adjusted while suppressing damage to the structure by the guide rod.

  Moreover, it is preferable that the said control part is covered with the shielding material which shields a radiation.

  According to this configuration, when the installation position is provided in a region where the predetermined radiation dose is provided, the influence of the radiation on the control unit can be suppressed by the shielding material, and thus malfunction by the control unit can be suppressed. In addition, as a shielding material, a lead material is used, for example.

  Moreover, it is preferable that the said moving mechanism moves the said pushing member to a horizontal direction.

  According to this configuration, since the moving mechanism that moves the pushing member in the horizontal direction may be used, the moving mechanism can be simplified.

  In addition, it is preferable that the installation position is provided in a work restriction area where human work is restricted, and the control unit remotely controls the moving mechanism.

  According to this configuration, even if the installation position is provided in the work restriction area, the position of the structure can be accurately adjusted by the plurality of pushing members by remote control. The work regulation area includes, for example, a predetermined radiation dose area, an oxygen deficient area, a high temperature area, and the like.

FIG. 1 is a schematic configuration diagram schematically illustrating the position adjustment device according to the first embodiment. FIG. 2 is a plan view schematically showing the position adjusting device of the first embodiment. FIG. 3 is an explanatory diagram relating to an example of an operation of position adjustment of the structure by the position adjustment apparatus of the first embodiment. FIG. 4 is an explanatory diagram relating to an example of an operation of adjusting the position of the structure by the position adjusting device of the first embodiment. FIG. 5 is a plan view schematically showing the position adjusting device of the second embodiment. FIG. 6 is a schematic configuration diagram schematically illustrating the position adjusting device of the third embodiment.

  Embodiments according to the present invention will be described below in detail with reference to the drawings. In addition, this invention is not limited by this embodiment. In addition, constituent elements in the following embodiments include those that can be easily replaced by those skilled in the art or those that are substantially the same. Furthermore, the constituent elements described below can be appropriately combined, and when there are a plurality of embodiments, the embodiments can be combined.

[Embodiment 1]
FIG. 1 is a schematic configuration diagram schematically illustrating the position adjustment device according to the first embodiment. FIG. 2 is a plan view schematically showing the position adjusting device of the first embodiment. FIG. 3 is an explanatory diagram relating to an example of an operation of position adjustment of the structure by the position adjustment apparatus of the first embodiment. FIG. 4 is an explanatory diagram relating to an example of an operation for adjusting the position of the structure by the position adjusting device according to the first embodiment.

  The position adjusting device 10 according to the first embodiment is a device that adjusts the position of the structure 2 suspended by the crane device 5 in the horizontal plane. Here, the structure 2 is, for example, a container or a core structure that houses a core structure provided in the reactor. The structure 2 is accommodated in a structure accommodation hole (structure accommodation portion) 4 formed to be recessed below the floor surface P1. The position adjusting device 10 adjusts the position of the structure 2 in the horizontal plane when the structure 2 is lowered into the structure accommodation hole 4. In the first embodiment, the case where the position adjustment device 10 adjusts the position of the structure 2 when the structure 2 is lowered will be described. However, the position adjustment device 10 is used when the structure 2 is raised. The position of the structure 2 may be adjusted. Here, prior to the description of the position adjusting device 10, the structure 2 and the structure accommodation hole 4 will be described.

  As shown in FIG. 2, the structure 2 is formed in a cylindrical shape, and is suspended by the crane device 5 so that the axial direction is the vertical direction. As shown in FIG. 1, the structure 2 has different diameters in the axial direction in the upper part 2a, the lower part 2b, and the central part 2c between the upper part 2a and the lower part 2b. It has become. The upper part 2a is a part having the largest diameter, the lower part 2b is a part having a smaller diameter than the upper part 2a, and the central part 2c is a part having the smallest diameter. For this reason, an upper step is formed on the outer surface of the structure 2 between the upper portion 2a and the central portion 2c, and a lower step is provided between the central portion 2c and the lower portion 2b. Part is formed. In addition, the shape of the structure 2 shown in FIG. 1 is an example, and is not limited to this shape.

  The structure accommodation hole 4 is a hollow cylindrical hole formed to be recessed downward from the floor surface P1. As shown in FIG. 1, the structure accommodation hole 4 is formed as a bottomed hole, but is not particularly limited, and may be a through hole. The diameter of the structure accommodation hole 4 is slightly larger than the thickest diameter of the structure 2 and can accommodate the structure 2 that is lowered by the crane device 5. Then, the structure 2 accommodated in the structure accommodation hole 4 reaches the bottom of the structure accommodation hole 4. In addition, the shape of the structure accommodation hole 4 shown in FIG. 1 is an example, and is not limited to this shape. For example, a stepped shape having a different diameter in the penetration direction may be used.

  Here, the structure accommodation hole 4 is provided in the radiation management region E1. The radiation management area E1 is an area having a predetermined radiation dose, and is a work restriction area where human work is restricted.

  Next, the position adjusting device 10 will be described with reference to FIGS. 1 and 2. As shown in FIG. 1, the position adjusting device 10 includes a plurality of guide rollers (pressing members) 11, a plurality of moving mechanisms 12, a plurality of motors 13, and a plurality of pressing amount detection sensors (pressing amount detection units) 14. And a control unit 15.

  The plurality of guide rollers 11 are installed on a floor surface (installation surface) P <b> 1 via a moving mechanism 12 described later, and are provided so as to surround the structure accommodation hole 4. As shown in FIG. 2, for example, three guide rollers 11 are arranged, and the three guide rollers 11 are arranged with phases different by 120 ° around the hollow cylindrical structure housing hole 4. Yes. Each guide roller 11 is configured by using a resin material, and the axial direction of the rotation shaft thereof is a horizontal direction, and can be brought into rolling contact with the outer peripheral surface of the descending structure 2.

  The plurality of moving mechanisms 12 respectively move the plurality of guide rollers 11 between the initial position and the pushed-in position. The plurality of moving mechanisms 12 are provided on the floor surface P <b> 1 outside the structure accommodation hole 4, and are arranged according to positions where the plurality of guide rollers 11 are provided. The plurality of moving mechanisms 12 support a plurality of guide rollers 11 in a rotatable manner.

  Each moving mechanism 12 is configured using, for example, a screw jack, and is a rotation / linear motion conversion mechanism that converts rotation of a motor 13 described later to linear motion. The moving mechanism 12 moves the guide roller 11 along the horizontal direction and also moves along the radial direction of the structure accommodation hole 4. Here, as shown in FIG. 2, the initial position is a position where the guide roller 11 is outside the structure accommodation hole 4 in a plan view as viewed from the vertical direction, and is separated from the structure 2 to be accommodated. It has become a position. In addition, as shown in FIG. 2, the pushing position is a position where the guide roller 11 is located inside the structure accommodation hole 4 in a plan view as viewed from the vertical direction, and is in contact with the outer peripheral surface of the structure 2 to be accommodated. It is a position to touch. The pushing position is a position where the center of the structure 2 and the center of the structure accommodation hole 4 overlap, and the structure 2 is centered by the plurality of guide rollers 11 becoming the pushing position. Here, the movement amount from the initial position to the pushing position is the pushing amount, and the pushing amount at the initial position is zero. In addition, since the pushing position is different depending on the part of the structure 2, the pushing amount is appropriately set according to the part of the structure 2.

  The moving mechanism 12 is a mechanism that moves the guide roller 11 in the horizontal direction, but is not particularly limited. For example, the moving mechanism 12 may be a mechanism that rotates from an initial position to a pushing position about a predetermined rotation axis. Good.

  Each motor 13 is a power source for moving the guide roller 11 by the moving mechanism 12. The motor 13 is connected to a control unit 15 which will be described later, and is rotationally controlled by the control unit 15 to adjust the pushing amount of the guide roller 11 so as to become a predetermined pushing amount.

  The push-in amount detection sensor 14 detects the push-in amount from the initial position of the guide roller 11, and is configured using, for example, an encoder that detects the rotation amount of the motor 13. The push-in amount detection sensor 14 is connected to a control unit 15 described later, and outputs the rotation amount of the motor 13 to the control unit 15 as a detection result.

  The control unit 15 controls the rotation of each of the plurality of motors 13 to move each guide roller 11 in the horizontal direction so that the pushing amount of each guide roller 11 becomes a predetermined pushing amount. Specifically, the control unit 15 includes a control panel 21 and a control device 22, and the control panel 21 and the control device 22 are connected so as to be capable of bidirectional communication.

  The control panel 21 is provided in the radiation management region E1, and the motor 13 and the push-in amount detection sensor 14 are connected. Information relating to the pushing amounts of the plurality of guide rollers 11 is input from the control device 22 to the control panel 21. Here, the control panel 21 stores information in which the pushing amount and the rotation amount are associated with each other. For this reason, when the control panel 21 acquires information about the push amount, the control panel 21 rotates the motor 13 based on the detection result of the push amount detection sensor 14 so that the rotation amount corresponds to the push amount. Further, since the control panel 21 is provided in the radiation management region E1, it is covered with a shielding material such as a lead material that shields radiation.

  The control device 22 is provided in the radiation shielding area E2. The radiation shielding region E2 is a region where radiation is shielded and is a region where people can enter. An operator who operates the position adjustment device 10 can remotely operate (remote control) the guide roller 11 in the radiation management region E1 by operating the control device 22. Although illustration is omitted, a shielding material is provided between the radiation management area E1 and the radiation shielding area E2. The control device 22 is connected to an inclination sensor (inclination detection unit) 7 provided in the crane device 5 and a movement amount detection sensor (movement amount detection unit) 8. The tilt sensor 7 detects the tilt of the structure 2 suspended by the crane device 5 with respect to the reference posture. Here, the reference posture of the structure 2 in the first embodiment is a posture in which the axial direction of the structure 2 is the vertical direction. In addition, as the inclination sensor 7, the inclination of the structure 2 is detected by measuring the distance of the structure 2 from the reference position at a plurality of measurement points with an optical sensor provided in the crane device 5, for example. The inclination of the structure 2 may be detected by detecting the tension of a plurality of wires that suspend the structure 2 with a load meter, and is not particularly limited. The movement amount detection sensor 8 detects the movement amount of the structure 2 in the vertical direction, and is configured using, for example, an encoder that detects the rotation amount of the motor of the crane device 5 (not shown).

  Such a position adjusting device 10 is attached with a predetermined accuracy when the radiation dose in the radiation management region E1 is a radiation dose that does not affect the operator. Specifically, the guide roller 11, the moving mechanism 12, the motor 13, and the push-in amount detection sensor 14 of the position adjusting device 10 use an optical device such as a three-dimensional optical scanner at a designed position on the floor surface P1 designed in advance. Is positioned and attached.

  Next, an example of the operation of adjusting the position of the structure 2 by the position adjusting device 10 will be described with reference to FIG. Specifically, in FIG. 3, the operation of accommodating the structure 2 in the structure accommodation hole 4 while adjusting the position of the structure 2 in the horizontal plane by the position adjusting device 10 will be described.

  First, the crane apparatus 5 moves the structure 2 directly above the structure accommodation hole 4. Moreover, the crane apparatus 5 is based on the detection result of the movement amount detection sensor 8 so that the lower part 2b of the structure 2 and the plurality of guide rollers 11 face the movement amount in the horizontal direction. 2 is lowered (step S1). And if the structure 2 moves to the position where the lower side part 2b and the some guide roller 11 oppose, the crane apparatus 5 will once stop the fall of the structure 2. FIG. At this time, the bottom surface of the structure 2 is located away from the upper side of the floor surface P1, and the plurality of guide rollers 11 are located at the initial position.

  Thereafter, the control device 22 inputs information related to the pushing amount to the control panel 21 so as to obtain the pushing amount corresponding to the lower portion 2b of the structure 2 based on the operation of the operator. The control panel 21 moves the plurality of guide rollers 11 to the pressing position corresponding to the input pressing amount. Accordingly, the plurality of guide rollers 11 are in contact with the outer peripheral surface of the lower portion 2b of the structure 2 so that the center of the structure 2 overlaps the center of the structure accommodation hole 4. Is centered (step S2).

  Subsequently, the crane device 5 lowers the structure 2 again to accommodate the lower portion 2b of the structure 2 in the structure accommodation hole 4 (step S3). At this time, the crane apparatus 5 lowers the structure 2 so that the plurality of guide rollers 11 face the central portion 2c from the lower portion 2b through the lower step in the horizontal direction. Here, since the central part 2 c has a smaller diameter than the lower part 2 b, there is no possibility that the central part 2 c is caught in the structure accommodation hole 4.

  Next, the control device 22 inputs information on the pushing amount to the control panel 21 so that the plurality of guide rollers 11 are pushed away from the structure 2 based on the operation of the operator. Note that the pushing amount away from the structure 2 may be a predetermined pushing amount in which the guide roller 11 is positioned on the outer side in the radial direction with respect to the upper portion 2a of the structure 2, for example, even at the initial position. Good. The control panel 21 moves the plurality of guide rollers 11 to the pressing position corresponding to the input pressing amount (step S4).

  The crane device 5 moves the structure 2 based on the detection result of the movement amount detection sensor 8 so that the upper portion 2a of the structure 2 and the plurality of guide rollers 11 face each other in the horizontal direction. Lower (step S5). And if the structure 2 moves to the position where the upper side site | part 2a and the some guide roller 11 oppose, the crane apparatus 5 will stop the descent | fall of the structure 2 once.

  Thereafter, the control device 22 inputs information related to the pushing amount to the control panel 21 so as to obtain the pushing amount corresponding to the upper portion 2a of the structure 2 based on the operation of the operator. The control panel 21 moves the plurality of guide rollers 11 to the pressing position corresponding to the input pressing amount. As a result, the plurality of guide rollers 11 are in contact with the outer peripheral surface of the upper portion 2 a of the structure 2, so that the center of the structure 2 overlaps the center of the structure accommodation hole 4. Is centered (step S6).

  Subsequently, the crane device 5 lowers the structure 2 again to accommodate the upper portion 2a of the structure 2 in the structure accommodation hole 4 (step S7). At this time, the crane apparatus 5 lowers the structure 2 so that the plurality of guide rollers 11 are separated from the structure 2 in the horizontal direction.

  Subsequently, the crane device 5 lowers the structure 2 so that the structure 2 is attached to the bottom of the structure accommodation hole 4, thereby completing the installation of the structure 2 in the structure accommodation hole 4. (Step S8). As described above, the position adjustment device 10 ends the position adjustment operation when the structure 2 is accommodated in the structure accommodation hole 4.

  Note that the position adjustment device 10 can use the procedure from step S1 to step S8 when the structure unit 2 is raised. That is, the position adjusting device 10 pushes the plurality of guide rollers 11 into the structure 2 at a position where the plurality of guide rollers 11 and the upper part 2a and the lower part 2b of the structure 2 face each other. Adjust the position of the object 2. At this time, it is preferable that the position adjusting device 10 separates the plurality of guide rollers 11 from the structure 2 so that the plurality of guide rollers 11 are not caught on the lower side step portion of the structure 2.

  Next, an example of the operation of adjusting the position of the structure 2 by the position adjusting device 10 will be described with reference to FIG. Specifically, FIG. 4 illustrates an operation when the structure 2 is tilted from the reference posture.

  First, the crane apparatus 5 moves the structure 2 directly above the structure accommodation hole 4 as in step S1 of FIG. 3. The crane apparatus 5 also includes a lower portion 2b of the structure 2 and a plurality of parts. The structure 2 is lowered so as to face the guide roller 11 in the horizontal direction (step S11). After the descent, the crane device 5 temporarily stops the descent of the structure 2. Thereafter, the control panel 21 moves the plurality of guide rollers 11 to the pushing position, similarly to step S2 of FIG. 3 (step S12).

  Subsequently, the crane device 5 lowers the structure 2 again to accommodate the lower portion 2 b of the structure 2 in the structure accommodation hole 4. At this time, the structure 2 is inclined from the reference posture by being caught on the peripheral edge of the structure accommodation hole 4 (step S13).

  When the control device 22 determines that the structure 2 is inclined from the reference posture based on the detection result of the inclination sensor 7, the control device 22 lifts the structure 2 with the crane device 5, thereby bringing the structure 2 into the reference posture. Return (step S14). Thereafter, the control device 22 corrects the pushing position so that the pushing amount from the initial position of the guide roller 11 located on the upper side of the inclined structure 2 is increased. Further, the control device 22 corrects the pushing position so that the pushing amount from the initial position of the guide roller 11 located on the lower side of the inclined structure 2 is small.

  The control device 22 inputs information regarding the corrected push amount to the control panel 21 so that the push amount after correction is obtained. The control panel 21 moves the plurality of guide rollers 11 to the pushing position corresponding to the inputted pushing amount after correction. Accordingly, the plurality of guide rollers 11 are in contact with the outer peripheral surface of the lower portion 2b of the structure 2 so that the center of the structure 2 overlaps the center of the structure accommodation hole 4. Is centered (step S15).

  Thereafter, the crane device 5 lowers the structure 2 again to house the lower portion 2b of the structure 2 in the structure housing hole 4 (step S16). As described above, the position adjusting device 10 ends the operation when the structure 2 is tilted from the reference posture, and executes the accommodating operation shown in FIG.

  As described above, according to the first embodiment, the plurality of guide rollers 11 can be positioned at the initial position when the structure 2 is installed in the structure accommodation hole 4. The structure 2 can be easily moved to a position opposed to 11. Further, the control unit 15 can perform centering by pushing the structure 2 with the plurality of guide rollers 11 by moving the plurality of guide rollers 11 from the initial position to the pushing position. For this reason, the position of the structure 2 can be accurately adjusted by the plurality of guide rollers 11 without a person entering the radiation management region E1. And in this state, the structure 2 can be accurately installed in the structure accommodation hole 4 by lowering the structure 2 to the structure accommodation hole 4 by the crane device 5. Thus, the position of the structure 2 can be positively adjusted using the plurality of guide rollers 11.

  Further, according to the first embodiment, even when a step portion is formed on the outer peripheral surface of the structure 2, the plurality of guide rollers 11 can be separated from the structure 2 once. At times, the structure 2 can be smoothly lowered without being caught by the plurality of guide rollers 11.

  In addition, according to the first embodiment, even when the structure 2 is inclined such that the bottom of the structure 2 is in contact with the peripheral edge of the structure accommodation hole 4, the pushing amount of the plurality of guide rollers 11 is pushed. Can be adjusted to an optimal position.

  Further, according to the first embodiment, by using the guide roller 11, when the structure 2 is lowered, the guide roller 11 rolls along the outer peripheral surface of the structure 2, so that the structure 2 is smoothly lowered. be able to.

  Further, according to the first embodiment, by covering the control panel 21 with the shielding material, malfunctions due to radiation of the control panel 21 can be suppressed.

  In addition, according to the first embodiment, the moving mechanism 12 can be a screw jack that moves the guide roller 11 in the horizontal direction, so that the moving mechanism 12 can have a simple configuration.

  Further, according to the first embodiment, even when the structure accommodation hole 4 is provided in the radiation management region E1, the position of the structure 2 can be accurately adjusted by the plurality of guide rollers 11 by remote operation. it can.

  In the first embodiment, the structure 2 is installed in the structure accommodation hole 4 formed to be recessed downward from the floor surface P1, but is installed at a predetermined installation position formed on the floor surface P1. Also good.

  In the first embodiment, the moving mechanism 12 is configured to use a screw jack that moves the guide roller 11 in the horizontal direction. However, the moving mechanism 12 may be a hydraulic mechanism using a hydraulic cylinder, and is not particularly limited.

[Embodiment 2]
Next, the position adjusting device 30 according to the second embodiment will be described with reference to FIG. FIG. 5 is a plan view schematically showing the position adjusting device of the second embodiment. In the second embodiment, parts that are different from the first embodiment will be described in order to avoid redundant descriptions, and parts that are the same as those in the first embodiment will be described with the same reference numerals.

  The structure 31 whose position is adjusted by the position adjusting device 30 according to the second embodiment has a rectangular tube shape having a square cross section. For this reason, the structure accommodation hole 32 is formed in a hollow prismatic shape according to the shape of the structure 31.

  As shown in FIG. 5, the position adjusting device 30 is provided so that the plurality of guide rollers 11 surround the periphery of the structure accommodation hole 32 having a hollow prism shape. As shown in FIG. 5, for example, four guide rollers 11 are arranged, and the four guide rollers 11 are respectively provided so as to correspond to the four side surfaces of the hollow prismatic structure accommodation hole 32. At this time, the two guide rollers 11 provided on the two opposing side surfaces are provided so as to face each other with the center of the structure accommodation hole 32 where two diagonal lines intersect. For this reason, the four guide rollers 11 can adjust the position of the structure 31 with respect to the structure accommodation hole 4 so that the structure 31 can be centered by contacting the four side surfaces of the structure 31 having a rectangular tube shape.

  As described above, according to the second embodiment, even when the structure 31 and the structure accommodation hole 32 have a quadrangular cross-section, the plurality of guide rollers 11 are moved from the initial position to the pushing position, so that Centering can be performed by pushing the structure 31 by the guide roller 11.

[Embodiment 3]
Next, the position adjusting device 40 according to the third embodiment will be described with reference to FIG. FIG. 6 is a schematic configuration diagram schematically illustrating the position adjusting device of the third embodiment. In the third embodiment, parts that are different from the first and second embodiments will be described in order to avoid redundant descriptions, and parts that have the same configurations as those in the first and second embodiments will be described with the same reference numerals.

  In the position adjusting device 40 of the third embodiment, a guide rod (guide rod) 41 is used instead of the guide roller 11 of the first and second embodiments.

  As shown in FIG. 6, the guide rod 41 is a rod-like member that is long in the longitudinal direction, and is arranged so that the longitudinal direction is the horizontal direction and the radial direction of the structure accommodation hole 4. The guide rod 41 has a hemispherical contact surface 41 a that contacts the structure 2, and makes point contact with the structure 2. Further, the contact surface 41 a of the guide rod 41 is covered with a resin material 42 and has a lower hardness than the structure 2.

  As described above, according to the third embodiment, the guide rod 41 is in sliding contact with the outer surface of the structure 2 when the structure 2 is lowered. At this time, the contact surface 41 a of the guide rod 41 is formed in a hemispherical surface and is covered with the resin material 42, so that it smoothly slides against the structure 2. For this reason, it is possible to adjust the position of the structure 2 while suppressing the structure 2 from being damaged by the guide rod 41.

DESCRIPTION OF SYMBOLS 2 Structure 4 Structure accommodation hole 5 Crane apparatus 7 Inclination sensor 8 Movement amount detection sensor 10 Position adjustment apparatus 11 Guide roller 12 Movement mechanism 13 Motor 14 Pushing amount detection sensor 15 Control part 21 Control panel 22 Control apparatus 30 Position adjustment apparatus ( Embodiment 2)
31 Structure 32 Structure Housing Hole 40 Position Adjustment Device (Embodiment 3)
41 Guide rod 42 Resin material P1 Floor E1 Radiation management area E2 Radiation shielding area

Claims (9)

A position adjusting device that adjusts the position of the structure when the structure suspended by the crane device is moved to the installation position,
A plurality of pushing members provided surrounding the installation position;
An initial position where the plurality of pushing members are separated from the structure suspended just above the installation position, and a pushing position where the plurality of pushing members are pushed horizontally into the structure suspended just above the installation position. A plurality of moving mechanisms each moving between,
A pushing amount detecting unit for detecting a pushing amount of the pushing member by the moving mechanism;
A control unit that controls the moving mechanism based on a detection result of the push-in amount detection unit,
The controller is
When the structure is installed at the installation position, a plurality of the pushing members are positioned at the initial position, and the suspended structure moves directly above the installation position, and a plurality of the pushing operations are performed. A position adjusting device characterized in that, when moved to a position facing the member, the moving mechanism is controlled to move the plurality of pushing members from the initial position to the pushing position.   2. The position according to claim 1, wherein the installation position is a structure accommodation unit that is located on a lower side in a vertical direction than an installation surface on which the pushing member is installed and can accommodate the structure. Adjustment device. A movement amount detection unit for detecting a movement amount in the vertical direction of the structure suspended by the crane device;
On the outer surface of the structure, a stepped portion is formed by an upper side portion where the upper side in the vertical direction is thick and a lower side portion where the lower side in the vertical direction is thin,
The controller is
When the plurality of pushing members move relative to the upper part via the stepped portion from the lower part due to the descending of the structure, the plurality of pushing members face the lower part. The moving mechanism is controlled so that the plurality of pushing members are separated from the structure at a position, and the plurality of pushing members are placed at positions where the plurality of pushing members are opposed to the upper side portion after the structure is lowered. The position adjusting device according to claim 1, wherein the moving mechanism is controlled so that a member pushes the structure. An inclination detector that detects an inclination of the structure relative to a reference posture;
When the control unit determines that the structure is tilted from the reference posture based on the detection result of the tilt detection unit, the control device lifts the structure by the crane device and moves the structure to the reference posture. After the return to the position, the pushing position is corrected so that the pushing amount from the initial position of the pushing member located on the upper side of the structure is increased during the tilting, while the structure of the structure is tilted during the tilting. 4. The position adjusting device according to claim 1, wherein the pushing position is corrected so that a pushing amount of the pushing member located on the lower side from the initial position becomes small. 5.   The position adjusting device according to any one of claims 1 to 4, wherein the pushing member is a guide roller that is in rolling contact with an outer surface of the structure. The pushing member is a guide bar that contacts the outer surface of the structure,
The contact surface with which the said structure of the said guide bar contacts is formed in the curved surface which contacts the said structure, and the resin material is coat | covered with any one of Claim 1 to 4 characterized by the above-mentioned. Position adjustment device.   The position adjusting device according to claim 1, wherein the control unit is covered with a shielding material that shields radiation.   The position adjusting device according to claim 1, wherein the moving mechanism moves the pushing member in a horizontal direction. The installation position is provided in a work regulation area where human work is regulated,
The position adjustment apparatus according to claim 1, wherein the control unit remotely controls the moving mechanism.

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