Lock pin lifting device and manual handle

Abstract

To prevent the failure of a lock pin lifting device by using only a designated manual handle.SOLUTION: A lock pin lifting device includes a lock pin lifting part that inserts a lock pin into an insertion hole provided on a floor surface to disallow the movement of a wave barrier door when closing the wave barrier door, which is opened to allow movement between the outer and inner areas of the wave barrier wall, and removes the lock pin from the insertion hole to allow the movement of the wave barrier door when the wave barrier door is opened; a rotation transmission part that transmits rotational force required when the lock pin is inserted into or removed from the lock pin lifting unit; and a manual handle that has the same rotation axis as that of the rotation transmission part and is detachably attached to the rotation transmission part; the tip of the manual handle has a convex shape that is formed integrally with a cylindrical portion that has the same rotation axis as that of the manual handle and an extension portion that extends from the outer circumferential surface of the cylindrical portion in a direction away from the axis of the cylindrical portion, and the tip of the rotation transmission part has a concave shape that fits into the convex shape of the tip of the manual handle.SELECTED DRAWING: Figure 4A

Description

[Technical field]

[0001] The present invention relates to a lock pin lifting device and a manual handle that permit or prohibit movement when opening or closing a wave gate. [Background technology]

[0002] For example, in a nuclear power plant, a breakwater is installed on the land facing the sea of ​​the nuclear power plant, for example, over a length of several kilometers, in order to prevent the site of the nuclear power plant from being flooded by a tsunami caused by an earthquake or a high tide caused by a typhoon. In addition, a space of about 10 meters wide is provided in the middle of the breakwater where no breakwater is installed, and a breakwater door is installed in this space so that people and cars can pass between the sea side area of ​​the breakwater (the outer area of ​​the nuclear power plant) and the land side area (the inner area of ​​the nuclear power plant) opposite the sea side of the breakwater. The breakwater door is opened when people and cars pass between the outer area and the inner area of ​​the nuclear power plant, and is closed at other times.

[0003] Some waveproof doors are equipped with a lock pin lifting device that prohibits the movement of the waveproof door when it is closed and allows the movement of the waveproof door when it is opened. Specifically, the lock pin lifting device has a structure that, when the waveproof door is closed, inserts a lock pin provided on the waveproof door into an insertion hole provided in the floor surface to prohibit the movement of the waveproof door, and, when the waveproof door is opened, removes the lock pin from the insertion hole to allow the movement of the waveproof door (see Patent Document 1). [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2018-178680 A Summary of the Invention [Problem to be solved by the invention]

[0005] Here, some lock pin lifting devices have a structure in which the work of inserting the lock pin into the insertion hole and the work of removing the lock pin from the insertion hole are performed manually by an operator. For example, the lock pin lifting device has a manual handle that is detachably attached to the lock pin lifting device main body, and is structured so that when an operator inserts the manual handle into the insertion port of the lock pin lifting device main body and rotates it in one direction, the lock pin descends and is inserted into the insertion hole, and when the operator inserts the manual handle into the insertion port of the lock pin lifting device main body and rotates it in the opposite direction, the lock pin ascends and is removed from the insertion hole.

[0006] However, if the shape of the insertion port of the lock pin lifting device main body is a simple shape such as a rectangle, it becomes possible to attach an electric screwdriver whose bit tip is shaped to fit into the insertion port of the lock pin lifting device main body to the lock pin lifting device main body. If an electric screwdriver is used, more load than necessary is applied to the lock pin lifting device main body, which may cause the lock pin lifting device main body to break down.

[0007] The present invention has been made in consideration of the above-mentioned problems, and has as its object to provide a lock pin lifting device to which only a designated manual handle can be attached, and a manual handle that can be attached only to a lock pin lifting device. [Means for solving the problem]

[0008] One of the present inventions for achieving the above object is a lock pin lifting device, which includes a lock pin lifting unit that, when a wave door, which opens when traveling between an outer area and an inner area of ​​a wave wall, is closed, inserts a lock pin into an insertion hole provided in the floor surface to prohibit movement of the wave door, and when the wave door is opened, removes the lock pin from the insertion hole to allow movement of the wave door, a rotation transmission unit that transmits a rotational force required when inserting and removing the lock pin to the lock pin lifting unit, and a manual handle that has the same rotation axis as the rotation axis of the rotation transmission unit and is detachably attached to the rotation transmission unit, wherein the tip of the manual handle has a convex shape formed integrally with a cylindrical portion having the same rotation axis as the manual handle and an extension portion extending from the outer circumferential surface of the cylindrical portion in a direction away from the axis of the cylindrical portion, and the tip of the rotation transmission unit has a concave shape that fits into the convex tip of the manual handle.

[0009] Another aspect of the present invention for achieving the above-mentioned object is a lock pin lifting device, wherein the tip of the manual handle has a convex shape formed integrally with a cylindrical portion and a plurality of extension portions extending radially from the outer periphery of the cylindrical portion, centered on the axis of the cylindrical portion.

[0010] Another of the present inventions for achieving the above-mentioned object is a lock pin lifting device, which includes a lock pin lifting section that, when a wave door, which opens when traveling between an outer area and an inner area of ​​a wave wall, is closed, inserts a lock pin into an insertion hole provided in the floor surface to prohibit movement of the wave door, and, when the wave door is opened, removes the lock pin from the insertion hole to allow movement of the wave door, a rotation transmission section that transmits a rotational force required when inserting and removing the lock pin to the lock pin lifting section, and a manual handle that has the same rotation axis as the rotation axis of the rotation transmission section and is detachably attached to the rotation transmission section, wherein the tip of the rotation transmission section has a convex shape formed integrally with a cylindrical section having the same rotation axis as the rotation transmission section and an extension section extending from the outer circumferential surface of the cylindrical section in a direction away from the axis of the cylindrical section, and the tip of the manual handle has a concave shape that fits into the convex tip of the rotation transmission section.

[0011] Another aspect of the present invention for achieving the above-mentioned object is a lock pin lifting device, in which the tip of the rotation transmission part has a convex shape formed integrally with a cylindrical part and a plurality of extension parts extending radially from the outer circumferential surface of the cylindrical part, centered on the axis of the cylindrical part.

[0012] According to the lock pin lifting device of the present invention, a specified manual handle is attached to the lock pin lifting device, making it possible to prevent breakdowns in the lock pin lifting device.

[0013] Another of the present inventions for achieving the above-mentioned object is a manual handle of a lock pin lifting device including a lock pin lifting section that, when a wave door, which opens when traveling between an outer area and an inner area of ​​a wave wall, is closed, inserts a lock pin into an insertion hole provided in the floor surface to prohibit movement of the wave door, and, when the wave door is opened, removes the lock pin from the insertion hole to allow movement of the wave door, a rotation transmission section that transmits a rotational force required when inserting and removing the lock pin to the lock pin lifting section, and a manual handle that has the same rotation axis as the rotation axis of the rotation transmission section and is detachably attached to the rotation transmission section, wherein a tip section of the manual handle has a convex shape formed integrally with a cylindrical section having the same rotation axis as the manual handle and an extension section extending from the outer circumferential surface of the cylindrical section in a direction away from the axis of the cylindrical section, and fits into the concave-shaped tip section of the rotation transmission section.

[0014] Another aspect of the present invention for achieving the above-mentioned object is a manual handle for a lock pin lifting device, wherein the tip of the manual handle has a convex shape formed integrally with a cylindrical portion and a plurality of extension portions that extend radially from the outer circumferential surface of the cylindrical portion, centered on the axis of the cylindrical portion.

[0015] Another of the present inventions for achieving the above-mentioned object is a manual handle of a lock pin lifting device including a lock pin lifting unit that, when the wave door, which opens when traveling between the outer area and the inner area of ​​the wave wall, is closed, inserts a lock pin into an insertion hole provided in the floor surface to prohibit movement of the wave door, and, when the wave door is opened, removes the lock pin from the insertion hole to allow movement of the wave door, a rotation transmission unit that transmits a rotational force required when inserting and removing the lock pin to the lock pin lifting unit, and a manual handle that has the same rotation axis as the rotation axis of the rotation transmission unit and is detachably attached to the rotation transmission unit, wherein the tip of the manual handle has a concave shape that fits with the tip of the rotation transmission unit that has a convex shape formed integrally with a cylindrical section having the same rotation axis as the rotation transmission unit and an extension section extending from the outer circumferential surface of the cylindrical section in a direction away from the axis of the cylindrical section.

[0016] Another aspect of the present invention for achieving the above-mentioned object is a manual handle for a lock pin lifting device, in which the tip of the rotation transmission part has a convex shape formed integrally with a cylindrical part and a plurality of extension parts extending radially from the outer circumferential surface of the cylindrical part, centered on the axis of the cylindrical part.

[0017] According to the manual handle of the lock pin lifting device of the present invention, it can be attached only to a designated lock pin lifting device, making it possible to prevent breakdowns in the lock pin lifting device.

[0018] In addition, the problems and solutions disclosed in this application will be made clear by the description in the section of the preferred embodiment of the invention and the descriptions in the drawings. Effect of the Invention

[0019] According to the present invention, it is possible to use only the designated manual handle and prevent failure of the lock pin lifting device. [Brief description of the drawings]

[0020] [Figure 1]FIG. 1 is a diagram showing an example of a breakwater wall 4 and a breakwater door 5 installed on land 3 between a nuclear power plant 1 and the sea 2, as viewed from above. [Figure 2A] 1 is an enlarged perspective view of an example of a breakwater door 5 closing a gap in a breakwater wall 4, viewed from the sea 2 side toward the nuclear power plant 1 side. FIG. [Figure 2B] FIG. 1 is an enlarged perspective view of an example of a breakwater door 5 closing a gap in a breakwater wall 4, viewed from the nuclear power plant 1 side toward the sea 2 side. [Diagram 3] 1 is an enlarged plan view of an example of a breakwater door 5 closing a gap in a breakwater wall 4, viewed from the nuclear power plant 1 side toward the sea 2 side. [Figure 4A] 13 is a perspective view showing a state of the lock pin lifting device 300 when the movement of the wave door 5 is permitted. FIG. [Figure 4B] 13 is a perspective view showing a state of the lock pin lifting device 300 when the movement of the wave door 5 is prohibited. FIG. [Figure 5A] 13 is a perspective view showing an example of a manual handle 330. FIG. [Figure 5B] 13 is a side view showing an example of a manual handle 330. FIG. [Figure 5C] 13 is a front view showing an example of a manual handle 330. FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0021] At least the following points become clear from the description of this specification and the accompanying drawings. Hereinafter, the present invention will be described based on one embodiment with reference to the accompanying drawings. In this embodiment, the breakwater wall 4 (100, 200) and the breakwater door 5 are installed on the land 3 between the nuclear power plant 1 and the sea 2, but the nuclear power plant 1 may be replaced by a thermal power plant.

[0022] FIG. 1 is a diagram showing an example of a breakwater wall 4 (100, 200) and a breakwater door 5 installed on land 3 between a nuclear power plant 1 and the sea 2, as viewed from above.

[0023] Nuclear power plant 1 is a facility that generates electricity by vaporizing water into steam using heat generated when uranium fuel is nuclear fissioned inside a reactor pressure vessel, and using the steam pressure to rotate a turbine, which then rotates a generator connected to the turbine. Nuclear power plant 1 is located on land 3 facing sea 2, as it needs to take in seawater as the water to be vaporized into steam.

[0024] Nuclear power plant 1 faces the sea 2, and is therefore susceptible to damage from tsunamis caused by earthquakes and storm surges caused by typhoons. To protect nuclear power plant 1 from flooding caused by tsunamis and storm surges, breakwater walls 4 and breakwater doors 5 are installed along the coastline on land 3 between nuclear power plant 1 and sea 2.

[0025] The breakwater wall 4 is a structure that is, for example, several dozen meters high above sea level, several meters thick, and several kilometers long along the coastline. The breakwater wall 4 must be strong enough to withstand tsunamis and high tides, and is therefore, for example, a structure in which a wall made of a steel structure and a composite structure of steel frames and reinforced concrete is joined to the top of a reinforced concrete foundation erected from bedrock underground. In this embodiment, the breakwater wall 4 is installed separately into two breakwater walls 100, 200 at a position where workers and the like need to move between the sea 2 side of the breakwater wall 4 and the nuclear power plant 1 side.

[0026] The wave door 5 is installed so as to cover a gap D1, for example several meters wide, between the breakwater walls 100, 200, and is a sliding door that moves in the longitudinal direction along the coastline of the breakwater walls 100, 200. The wave door 5 opens when workers or the like pass through the gap between the breakwater walls 100, 200, and closes at other times. The wave door 5 is a structure formed, for example, from a steel material so as to have the same strength as the breakwater walls 100, 200, and has a height equal to that of the breakwater walls 100, 200, a width D2 wider than the gap between the breakwater walls 100, 200, and a thickness thinner than that of the breakwater walls 100, 200.

[0027] Fig. 2A is an enlarged perspective view of an example of the breakwater door 5 closing the gap between the breakwater walls 100, 200, as viewed from the sea 2 side (-X side) toward the nuclear power plant 1 side (+X side). Fig. 2B is an enlarged perspective view of an example of the breakwater door 5 closing the gap between the breakwater walls 100, 200, as viewed from the nuclear power plant 1 side (+X side) toward the sea 2 side (-X side).

[0028] The thickness of an opposing surface 110 of the breakwater wall 100 that faces the breakwater wall 200 in the X-axis direction is made thicker than the thickness of an opposing surface 210 of the breakwater wall 200 that faces the breakwater wall 100 in the X-axis direction.

[0029] A guide groove 7 that guides the underside of the wave door 5 in the length direction (direction along the Y axis) of the wave door 100, 200 is continuously formed on the concrete floor 6 that is poured into the gap between the wave walls 100, 200. Rollers 51 that support the wave door 5 and rotate guided by the guide groove 7 are provided on the underside (-Z side) of the wave door 5 that faces the floor 6. In this embodiment, a pair of two rollers 51 are provided along the width direction (direction of the Y axis) of the wave door 5 so that the wave door 5 can move in a stable state, and this pair of rollers 51 is provided in two rows along the thickness direction (direction of the X axis) of the wave door 5.

[0030] A long support body 240 made of, for example, steel is fixed from the top surface 220 of the breakwater wall 200 to the side surface 230 on the sea 2 side, in order to guide the upper surface 52 side of the breakwater door 5 in the length direction (direction along the Y axis) of the breakwater walls 100, 200. The support body 240 has a substantially L-shaped shape including a vertical portion 241 extending slightly vertically upward (+Z direction) from the top surface 220 of the breakwater wall 200, a horizontal portion 242 extending horizontally (-X direction) from the +Z side end of the vertical portion 241 toward the sea 2 side from the side surface 230 of the breakwater wall 200 to a position exceeding the thickness of the breakwater door 5, and a vertical portion 243 extending vertically downward (-Z direction) from the -X side end of the horizontal portion 242 toward the floor surface 6. A guide protrusion 244 having, for example, a rectangular parallelepiped shape is provided on the lower surface on the -Z side of the horizontal portion 242 to guide the upper surface 52 of the wave door 5 in the direction along the Y axis. A guide groove 53 for guiding the guide protrusion 244 is continuously provided on the upper surface 52 of the wave door 5 along the Y axis direction.

[0031] The wavebreak door 5 is sandwiched between the side surface 230 of the wavebreak wall 200 and the vertical portion 243 of the support 240, and the vertical portion 243 has a role of preventing the wavebreak door 5 from falling towards the sea 2 within the support 240. In this embodiment, two supports 240 are provided along the movement direction of the wavebreak door 5 (the direction of the Y axis).

[0032] A fitting groove 111 into which the end of the wavebreak door 5 facing the facing surface 110 fits is formed continuously along the Z-axis direction on the opposing surface 110 of the wavebreak wall 100. A long support body 130 made of, for example, steel is fixed to the top surface 120 of the wavebreak wall 100 to support the upper surface 52 of the wavebreak door 5 when the wavebreak door 5 is closed and the end of the wavebreak door 5 fits into the fitting groove 111. The support body 130 has a U-shape on the top surface 120 of the wavebreak wall 100, including a vertical portion 131 extending slightly in the vertical upward direction (+Z direction), a horizontal portion 132 extending horizontally (-X direction) from the end of the +Z side of the vertical portion 131 toward the sea 2 side, and a vertical portion 133 extending vertically downward (-Z direction) from the end of the -X side of the horizontal portion 132 toward the top surface 120. The underside of the horizontal portion 132-Z is provided with a guide protrusion 134 that fits into the guide groove 53 of the waveproof door 5 when the waveproof door 5 is closed and the end of the waveproof door 5 fits into the fitting groove 111.

[0033] In this way, the wave door 5 is capable of opening and closing the gap between the wave walls 100, 200 by having the roller 51 guided by the guide groove 7 on the lower side of the wave door 5, and having the guide groove 53 guided by the guide protrusion 244 of the support body 240 and the guide protrusion 134 of the support body 130 on the upper side of the wave door 5.

[0034] FIG. 3 is an enlarged plan view of an example when the breakwater door 5 closes the gap between the breakwater walls 100, 200, as viewed from the nuclear power plant 1 side (+X side) toward the sea 2 side (-X side).

[0035] When the wave door 5 is closed to close the gap between the wave walls 100 and 200, it is necessary to prohibit the movement of the wave door 5 so that the wave door 5 does not open along the Y-axis direction. On the other hand, when the wave door 5 is opened to open the gap between the wave walls 100 and 200, it is necessary to permit the movement of the wave door 5. Therefore, the wave door 5 is provided with a lock pin lifting device 300 for permitting or prohibiting the movement of the wave door 5 on the lower structural frame 54 on the -Z side close to the floor surface 6 on the +X side facing the nuclear power plant 1. In addition, an insertion hole 61 having a diameter of, for example, several tens of centimeters and a depth of about several tens of centimeters to 1 m is formed vertically downward (-Z direction) on the floor surface 6 facing the lock pin lifting device 300 when the wave door 5 is closed.

[0036] Fig. 4A is a perspective view showing an example of the lock pin lifting device 300, and shows the state of the lock pin lifting device 300 when movement of the wave door 5 is permitted. Fig. 4B is a perspective view showing an example of the lock pin lifting device 300, and shows the state of the lock pin lifting device 300 when movement of the wave door 5 is prohibited. For ease of explanation, a manual handle 330, which will be described later, is shown in a state detached from the rotation transmission unit 320.

[0037] The lock pin lifting device 300 is a device that prohibits the movement of the wave door 5 so that the wave door 5 is locked in the closed position when the wave door 5 is closed, and on the other hand, allows the movement of the wave door 5 so that the wave door 5 can move in the opening direction when the wave door 5 is opened. In this embodiment, two lock pin lifting devices 300 are provided on the wave door 5 along the Y-axis direction.

[0038] The lock pin lifting device 300 includes a lock pin lifting section 310, a rotation transmission section 320, and a manual handle 330 as structures for permitting or prohibiting the movement of the wave door 5.

[0039] The lock pin lifting portion 310 includes a cylindrical portion 311 , a lock pin 312 , and a connecting portion 313 .

[0040] The cylindrical portion 311 has one cylindrical portion 311A ​​extending vertically upward (+Z direction) on the opposite side (+Z side) of the floor surface 6 of the structural frame 54 constituting the waveproof door 5, and the other cylindrical portion 311B extending vertically downward (-Z direction) on the floor surface 6 side (-Z side) of the structural frame 54. The insertion hole 311C in the cylindrical portion 311A ​​and the insertion hole 311D in the cylindrical portion 311B are connected. The end of the cylindrical portion 311A ​​on the side away from the structural frame 54 (+Z side) is closed, and the end of the cylindrical portion 311B on the side away from the structural frame 54 (-Z side) is opened as an insertion hole 311E. The insertion hole 311E facing the floor surface 6 side faces the insertion hole 62 opening on the floor surface 6 toward the insertion hole 61 when the waveproof door 5 is in a closed state. The cylindrical portion 311 is, for example, a steel member.

[0041] The lock pin 312 is a long cylindrical member that is inserted into an insertion hole 61 formed in the floor surface 6 when the movement of the wave door 5 is prohibited, and is removed from the insertion hole 61 when the movement of the wave door 5 is permitted. The diameter of the lock pin 312 is slightly smaller than the diameter of the insertion hole 61, for example, so that the lock pin 312 can be inserted into the insertion hole 61, and the length of the lock pin 312 is such that, for example, when the tip of the lock pin 312 on the floor surface 6 side reaches the bottom surface 63 of the insertion hole 61, a part of the lock pin 312 on the opposite side to the floor surface 6 remains inserted in the insertion hole 311D in the tube part 311. A spiral screw groove 312A is formed on the outer circumferential surface of the lock pin 312. The lock pin 312 is inserted in advance from the insertion port 311E of the cylindrical portion 311 into the insertion holes 311C, 311D, and moves back and forth within the cylindrical portion 311 in a direction away from the floor surface 6 (+Z direction) and a direction toward the floor surface 6 (-Z direction). When the movement of the wave door 5 is permitted, the lock pin 312 is in a state where the entire lock pin 312 is housed within the cylindrical portion 311 as shown in Fig. 4A, while when the movement of the wave door 5 is prohibited, the lock pin 312 is in a state where it is inserted from the cylindrical portion 311 into the insertion hole 61 as shown in Fig. 4B. The lock pin is a member formed from an alloy steel such as stainless steel.

[0042] The rotation transmission part 320 transmits to the lock pin 312 a rotational force required for the lock pin 312 to move back and forth within the cylindrical part 311 in the vertical direction (the direction along the Z axis).

[0043] The rotation transmission unit 320 includes a shaft 321 and a mounting unit 322 .

[0044] The shaft 321 is formed with a screw groove 321A that meshes with the screw groove 312A of the lock pin 312. Here, the joint 313 is fixed to the surface of the structural frame 54 opposite to the floor surface 6 (+Z side). The cylindrical portion 311A ​​is joined to the surface of the joint 313 opposite to the floor surface 6 (+Z side), and the cylindrical portion 311B is joined to the surface of the structural frame 54 on the floor surface 6 side (-Z side) so as to communicate with the cylindrical portion 311A. The joint 313 is, for example, a steel member. The shaft 321 is a member having a long cylindrical shape with a rotation axis in a direction perpendicular to the lock pin 312 (direction along the X-axis), and is inserted into the joint 313 along the X-axis, and is held in a state in which the screw groove 321A of the shaft 321 and the screw groove 312A of the lock pin 312 mesh with each other. For example, when viewing shaft 321 from the +X side to the -X side, the rotational force when shaft 321 rotates clockwise is transmitted via thread grooves 312A, 321A as a driving force for lifting lock pin 312 in the +Z direction, while the rotational force when shaft 321 rotates counterclockwise is transmitted via thread grooves 312A, 321A as a driving force for lowering lock pin 312 in the -Z direction.

[0045] A mounting part 322 to which the manual handle 330 is detachably attached is integrally provided at the tip of the shaft 321 on the side opposite to the thread groove 321A (+X side). The mounting part 322 has the same rotation axis as the rotation axis of the shaft 321 and has, for example, a cylindrical shape. A concave insertion hole 323 into which the tip 331 of the manual handle 330 fits is cut and formed on the surface of the mounting part 322 on the side opposite to the thread groove 321A (+X side) that faces the convex tip 331 of the manual handle 330. When the tip 331 of the manual handle 330 is fitted into the insertion hole 323 of the mounting part 322, the manual handle 330 is attached to the mounting part 322. When viewing shaft 321 from the +X side toward the -X side, when shaft 321 is rotated clockwise multiple times (e.g., 100 times) using manual handle 330, lock pin 312 rises from the position shown in Fig. 4B to the position shown in Fig. 4A, and when shaft 321 is rotated counterclockwise multiple times (e.g., 100 times) using manual handle 330, lock pin 312 descends from the position shown in Fig. 4A to the position shown in Fig. 4B. Shaft 321 and mounting part 322 are members integrally formed from alloy steel such as stainless steel.

[0046] Fig. 5A is a perspective view showing an example of the manual handle 330. Fig. 5B is a side view showing an example of the manual handle 330. Fig. 5C is a front view showing an example of the manual handle 330.

[0047] The manual handle 330 has a tip portion 331 , a base portion 332 , a holding portion 333 , an arm portion 334 , and a grip portion 335 .

[0048] The tip portion 331 and the base portion 332 are an integral member formed by cutting an alloy steel such as stainless steel. The base portion 332 has a cylindrical shape and has the same rotation axis R as the rotation axis of the shaft 321 and the mounting portion 322. The tip portion 331 has a rotation axis R that is concentric with the base portion 332, and is formed integrally with the tip of the base portion 332 on the opposite side (-X side) to the holding portion 333.

[0049] The tip portion 331 has a cylindrical portion 3311, a truncated cone portion 3312, and two extension portions 3313 and 3314. The cylindrical portion 3311 is concentric with the base portion 332 and has a diameter shorter than that of the base portion 332. A truncated cone portion 3312 is integrally formed at the tip of the cylindrical portion 3311 on the opposite side (-X side) from the base portion 332, and is concentric with the cylindrical portion 3311 and has a diameter that decreases as it moves away from the cylindrical portion 3311. The inclined surface 3312A of the truncated cone portion 3312 guides the tip portion 331 so that it fits securely into the insertion hole 323. The extension portion 3313 extends from the outer circumferential surface of the cylindrical portion 3311 in a direction (+Z direction) away from the rotation axis R of the cylindrical portion 3311, and has a substantially rectangular parallelepiped shape. Further, the extension portion 3314 extends from the outer circumferential surface of the cylindrical portion 3311 in a direction away from the rotation axis R of the cylindrical portion 3311 and in the opposite direction (-Z direction) to the direction in which the extension portion 3313 extends, and has a substantially rectangular parallelepiped shape. For convenience of explanation, in Fig. 5A to Fig. 5C, the direction in which the extension portion 3313 extends is shown as the +Z direction, and the direction in which the extension portion 3314 extends is shown as the -Z direction. For example, it is assumed that the diameter X1 of the base portion 332 is 40 mm, the diameter X2 of the cylindrical portion 3311 is 20 mm, and the thickness X3 of the extension portions 3313 and 3314 in the direction along the Y axis is 10 mm.

[0050] The holding part 333 has a recess 333A into which a part of the side (+X side) opposite to the tip part 331 of the base part 332 is inserted. The diameter of the recess 333A is slightly larger than the diameter of the base part 332, and the base part 332 is inserted with almost no gap. A plurality of through holes 333B are drilled at equal intervals along the YZ plane between the outer peripheral surface and the inner peripheral surface of the holding part 333. For example, the holding part 333 has three through holes 333B drilled at intervals of 120 degrees. In addition, the base part 332 has a female screw groove (not shown) formed at a position that overlaps with the through hole 333B when the base part 332 is inserted into the recess 333A of the holding part 333. Then, the base part 332 is joined to the holding part 333 by screwing the male screw 333C through the through hole 333B and the female screw groove.

[0051] Arm portion 334 extends from holding portion 333 toward the opposite side (+X side) to base portion 332 of holding portion 333, and then extends in a direction perpendicular to rotation axis R (-Z direction), and has a generally L-shape when viewed from the +Y side to the -Y side. Holding portion 333 and arm portion 334 are, for example, steel members. Grip portion 335 is attached to the tip of arm portion 334 on the opposite side to holding portion 333 so as to be rotatable in the direction along the X-axis. Grip portion 335 is formed by cutting alloy steel such as stainless steel.

[0052] The insertion hole 323 of the mounting part 322 into which the tip part 331 of the manual handle 330 fits has a concave shape in which the external shapes of the cylindrical part 3311, the conical frustum part 3312, and the extension parts 3313 and 3314 constituting the tip part 331 fit together with almost no gap. Specifically, the insertion hole 323 is a single recessed shape consisting of a first recess 3231 into which the cylindrical part 3311 and the conical frustum part 3312 are inserted, a second recess 3232 into which the extension part 3313 is inserted, and a third recess 3233 into which the extension part 3314 is inserted.

[0053] When the manual handle 330 is attached to the attachment portion 322 and an operator grasps the grip portion 335 and rotates the manual handle 330 around the rotation axis R, the lock pin 312 can be raised or lowered via the shaft 321. For example, when the manual handle 330 is viewed from the +X direction to the -X direction, when the manual handle 330 is rotated clockwise, the lock pin 312 rises, and when the manual handle 330 is rotated counterclockwise, the lock pin 312 descends.

[0054] The manual handle 330 is provided with an arm portion 334 and a grip portion 335, so that an operator can easily rotate the manual handle 330. In addition, the tip portion 331 of the manual handle 330 has a convex shape combining a cylindrical portion 3311, a truncated cone portion 3312, and extension portions 3313 and 3314, and the insertion hole 323 of the mounting portion 322 has a concave shape into which the tip portion 331 fits, so that the extension portions 3313 and 3314 extending radially from the outer circumferential surface of the cylindrical portion 3311 reliably transmit the rotational force of the manual handle 330 to the mounting portion 322, and the shaft 321 can be reliably rotated. Furthermore, because insertion hole 323 is shaped to fit only with tip 331 of manual handle 330, it becomes impossible to fit, for example, the bit of a general-purpose electric screwdriver into insertion hole 323. This prevents more load than necessary from the electric screwdriver from being applied to lock pin lifting unit 310 and rotation transmission unit 320, and makes it possible to prevent breakdowns in lock pin lifting unit 310 and rotation transmission unit 320.

[0055] In this embodiment, two extensions 3313, 3314 are provided at intervals of 180 degrees on the outer circumferential surface of the cylindrical portion 3311, but for example, three extensions may be provided at intervals of 120 degrees on the outer circumferential surface of the cylindrical portion 3311, or four extensions may be provided at intervals of 90 degrees on the outer circumferential surface of the cylindrical portion 3311. Also, in this embodiment, the manual handle 330 is provided with a convex tip portion 331, and the rotation transmitting portion 320 is provided with a concave mounting portion 322. However, instead of the concave mounting portion 322, a convex mounting portion having the same shape as the tip portion 331 may be provided, and instead of the convex tip portion 331, a concave tip portion having the same shape as the mounting portion 322 may be provided.

[0056] As described above, the lock pin lifting device 300 is configured to insert the lock pin 312 into the insertion hole 61 provided vertically downward (-Z direction) from the floor surface 6 to prohibit movement of the wave door 5 when the wave door 5 is closed, which is opened when workers or the like pass between the outer area on the sea 2 side of the wave wall 4 (100, 200) and the inner area on the nuclear power plant 1 side, and to remove the lock pin 312 from the insertion hole 61 to permit movement of the wave door 5 when the wave door 5 is opened; and to transmit a rotational force required when inserting and removing the lock pin 312 to the lock pin lifting part 310. and a manual handle 330 having the same rotation axis R as the rotation axis of the rotation transmission unit 320 and removably attached to the rotation transmission unit 320. A tip portion 331 of the manual handle 330 has a convex shape formed integrally with a cylindrical portion 3311 having the same rotation axis as the rotation axis R of the manual handle 330 and two extension portions 3313, 3314 extending radially from the outer circumferential surface of the cylindrical portion 3311 in a direction away from the axis of the cylindrical portion 3311. An attachment portion 322 at the tip of the rotation transmission unit 320 has a concave insertion hole 323 that fits into the convex tip portion 331 of the manual handle 330.

[0057] According to the lock pin lifting device 300, since the specified manual handle 330 is attached to the lock pin lifting device 300, it is possible to prevent breakdowns in the lock pin lifting device.

[0058] It should be noted that the present embodiment is provided to facilitate understanding of the present invention, and is not intended to limit the present invention. The present invention may be modified or improved without departing from the spirit thereof, and equivalents thereof are also included in the present invention. [Explanation of symbols]

[0059] 1. Nuclear power plants 2. Sea 3 land 4,100,200 Breakwater wall 5. Breakwater Door 6. Floor surface 7,53 Guide groove 51 Lola 52 Top side 54 Structural Frame 61 Insertion hole 62 Insertion port 110,210 Opposite surface 111 Fitting groove 120,220 Top 130,240 Support 131,133,241,243 Vertical section 132,242 Horizontal part 134,244 Guide protrusion 230 Side 300 Lock pin lifting device 310 Lock pin lifting part 311,311A,311B Cylinder part 311C, 311D Insertion hole 311E Insertion port 312 Lock pin 312A,321A Thread groove 313 Joint 320 Rotation transmission part 321 Shaft 322 Mounting part 323 Insertion hole 330 Manual Handle 331 Tip 332 Base 333 Holding part 334 Arm section 335 Grip 3231 First recess 3232 Second recess 3233 3rd recess 3311 Cylinder section 3312 Cone section 3313,3314 Extension

Claims

1. a lock pin lifting unit that, when a wave door that opens when travelling between an outer area and an inner area of ​​the wave wall is closed, inserts a lock pin into an insertion hole provided in a floor surface to prohibit movement of the wave door, and, when the wave door is opened, removes the lock pin from the insertion hole to permit movement of the wave door; a rotation transmission unit that transmits a rotational force required for inserting and removing the lock pin to the lock pin lifting unit; a manual handle having the same rotation axis as the rotation axis of the rotation transmission unit and detachably attached to the rotation transmission unit; Including, the tip end of the manual handle has a convex shape formed integrally with a cylindrical portion having the same rotation axis as the rotation axis of the manual handle and an extension portion extending from an outer circumferential surface of the cylindrical portion in a direction away from the axis of the cylindrical portion; The tip of the rotation transmission part has a concave shape that fits into the convex tip of the manual handle. Lock pin lifting device.

2. The lock pin lifting device according to claim 1, The tip of the manual handle has a convex shape formed integrally with the cylindrical portion and the plurality of extension portions extending radially from the outer circumferential surface of the cylindrical portion around the axis of the cylindrical portion. Lock pin lifting device.

3. a lock pin lifting unit that, when a wave door that opens when travelling between an outer area and an inner area of ​​the wave wall is closed, inserts a lock pin into an insertion hole provided in a floor surface to prohibit movement of the wave door, and, when the wave door is opened, removes the lock pin from the insertion hole to permit movement of the wave door; a rotation transmission unit that transmits a rotational force required for inserting and removing the lock pin to the lock pin lifting unit; a manual handle having the same rotation axis as the rotation axis of the rotation transmission unit and detachably attached to the rotation transmission unit; Including, a tip end portion of the rotation transmitting portion has a convex shape formed integrally with a cylindrical portion having the same rotation axis as the rotation axis of the rotation transmitting portion and an extension portion extending from an outer circumferential surface of the cylindrical portion in a direction away from the axis of the cylindrical portion, The tip of the manual handle has a concave shape that fits into the convex tip of the rotation transmission part. Lock pin lifting device.

4. The lock pin lifting device according to claim 3, The tip end of the rotation transmission part has a convex shape formed integrally with the cylindrical part and the plurality of extension parts extending radially from the outer circumferential surface of the cylindrical part with the axis of the cylindrical part as a center. Lock pin lifting device.

5. a lock pin lifting unit that, when a wave door that opens when traveling between an outer area and an inner area of ​​a wave wall is closed, inserts a lock pin into an insertion hole provided in a floor surface to prohibit movement of the wave door, and, when the wave door is opened, removes the lock pin from the insertion hole to allow movement of the wave door; a rotation transmission unit that transmits a rotational force required when inserting and removing the lock pin to the lock pin lifting unit; and a manual handle that has the same rotation axis as the rotation axis of the rotation transmission unit and is detachably attached to the rotation transmission unit, The tip of the manual handle has a convex shape formed integrally with a cylindrical portion having the same rotation axis as the rotation axis of the manual handle and an extension portion extending from the outer circumferential surface of the cylindrical portion in a direction away from the axis of the cylindrical portion, and is fitted into the tip of the rotation transmission portion having a concave shape. Manual handle.

6. 6. The manual handle according to claim 5, The tip of the manual handle has a convex shape formed integrally with the cylindrical portion and the plurality of extension portions that extend radially from the outer circumferential surface of the cylindrical portion with the axis of the cylindrical portion as the center. Manual handle.

7. a lock pin lifting unit that inserts a lock pin into an insertion hole provided in a floor surface to prohibit movement of a wave door that opens when traveling between an outer area and an inner area of ​​a wave wall is closed, and that removes the lock pin from the insertion hole to allow movement of the wave door when the wave door is opened, a rotation transmission unit that transmits a rotational force required to insert and remove the lock pin to the lock pin lifting unit, and a manual handle that has a rotation shaft coaxial with the rotation shaft of the rotation transmission unit and is detachably attached to the rotation transmission unit, The tip of the manual handle has a concave shape that fits into the tip of the rotation transmission part, which has a convex shape formed integrally with a cylindrical part having the same rotation axis as the rotation axis of the rotation transmission part and an extension part extending from the outer circumferential surface of the cylindrical part in a direction away from the axis of the cylindrical part. Manual handle.

8. 8. The manual handle according to claim 7, The tip end of the rotation transmission part has a convex shape formed integrally with the cylindrical part and the plurality of extension parts extending radially from the outer circumferential surface of the cylindrical part with the axis of the cylindrical part as a center. Manual handle.

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