Tray drainage system and mechanical parking device using the same

Abstract

To provide a tray and a tray drainage system that can reliably drain water collected on the upper surface of the tray to beneath the tray.SOLUTION: A tray drainage system includes a drainage mechanism 20 provided at a tray 2 to mount an article and a working part 30 acting on the drainage mechanism 20 to release the drainage mechanism 20. The drainage mechanism 20 includes a seal part 2C1 provided at the lower side of an opening 2B penetrating through the floor of the tray 2 and sealing moisture, and an opening and closing component 22 to open and close the seal part 2C1. The working part 30 includes a working component 34 for releasing the seal part 2C1 by moving the opening and closing component 22 in a direction departed from the seal part 2C1. The working part 30 releases the seal part 2C1 to drain moisture collected on the tray 2.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present invention relates to a drainage system for a tray and a mechanical parking device using the same. [Background technology]

[0002] Patent Document 1 describes a pallet with a water tank that is supported at both longitudinal ends and on which a vehicle is placed, and that has a pair of tire support surfaces that continuously support the left and right tires of the vehicle when it is being loaded or unloaded, the tire support surfaces are formed horizontally and have a plurality of drain holes in the longitudinal center that allow the tires to pass over them, the drain holes passing through from the top to the bottom of the tire support surface, and further has a water tank fixed to the bottom surface of the tire support surface that collects water that flows down from the drain holes, and the section modulus including the water tank in a cross section that passes through the water tank and is perpendicular to the longitudinal direction is set to be larger than the section modulus of the portion without the water tank.

[0003] Patent document 2 describes a multi-story parking system having floor panels on which vehicles are placed, the floor panels being arranged in a three-dimensional manner, wherein drainage holes are provided in the floor panels, the lower opening edge of the drainage holes being a continuous circular curve or a continuous line that includes a straight line in part, and the upper opening edge of the drainage holes being a circular shape based on a curve or a line that includes a straight line in part, with a discontinuous part in part. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Patent Publication No. 2019-011579 [Patent Document 2] Patent Publication No. 2017-025665 Summary of the Invention [Problem to be solved by the invention]

[0005] However, the invention described in Patent Document 1 has multiple drainage holes on the tire support surface of the pallet, and a water tank for collecting water that flows down from the drainage holes is provided on the underside of the pallet, so the water tank protrudes from the underside of the pallet, making the height of the pallet larger than that of a pallet without a water tank.In addition, rust occurs inside the water tank, and it deteriorates significantly over time.

[0006] In addition, the invention described in Patent Document 2 has drainage holes in the floorboards, and the upper and lower opening edges of the drainage holes are processed, so that when there is water on the floorboards, the water constantly flows down through the drainage holes.

[0007] An object of the present invention is to provide a tray drainage system that reliably drains water that accumulates on the top surface of the tray below the tray, and a mechanical parking device that uses the same. [Means for solving the problem]

[0008] The tray drainage system of the first aspect is a tray drainage system comprising a drainage mechanism provided on a tray on which an item is placed, and an operating unit that acts on the drainage mechanism to open the drainage mechanism, wherein the drainage mechanism is provided below an opening that penetrates the floor of the tray and comprises a sealing unit that seals out moisture, and an opening / closing member that opens and closes the sealing unit, and the operating unit comprises an operating member that moves the opening / closing member in a direction away from the sealing unit to open the sealing unit, and the operating unit opens the sealing unit to drain moisture that has accumulated in the tray.

[0009] The tray drainage system of the second aspect is the tray drainage system of the first aspect, wherein the drainage mechanism comprises a tubular member provided below the opening, having openings at the top and bottom, and with the sealing portion formed at the top, a support member provided on the tubular member and movably supporting the opening / closing member, a sliding member connected to the opening / closing member and slidably supported by the support member, an actuated member provided on the opposite side of the sliding member from the opening / closing member and subjected to the action of the operating portion, and a biasing member provided between the support member and the actuated member and biasing the opening / closing member in a direction to contact the sealing portion.

[0010] The tray drainage system of the third aspect is the tray drainage system of the first or second aspect, wherein the operating part has a water tank that is open at the top, and an operating member that is provided inside the water tank and extends toward the actuated member of the drainage mechanism, and moves forward and backward relative to the actuated member.

[0011] The tray drainage system of the fourth aspect is the tray drainage system of the third aspect, in which the water tank provided in the operating unit has a drainage unit that drains moisture received from the drainage mechanism side.

[0012] A tray drainage system according to a fifth aspect is the tray drainage system according to any one of the first to fourth aspects, wherein the operating unit is provided in a lifting device that lifts and lowers the tray on which it is placed.

[0013] The tray drainage system of the sixth aspect is the tray drainage system of the fifth aspect, wherein the operating unit is configured to drain the moisture received by the operating unit into a water storage unit provided in the lifting device when the tray is placed on the lifting device.

[0014] A tray drainage system according to a seventh aspect is the tray drainage system according to the sixth aspect, wherein the water storage section includes a drainage mechanism that is the same as the drainage mechanism below the water storage section.

[0015] The tray drainage system of the eighth aspect is the tray drainage system of the seventh aspect, wherein the drainage mechanism of the water storage section is configured to drain moisture into an opposing and nearby drainage section when the lifting device is lowered.

[0016] The mechanical parking device of the 9th aspect comprises a tray for placing a vehicle, a boarding and disembarking room where the vehicle gets on and off the tray, a storage room for storing the tray, a lifting device that connects the boarding and disembarking room and the storage room and for placing the tray, and a drainage system for the tray of any one of the 1st to 8th aspects. [Effects of the Invention]

[0017] The drainage system for the tray according to the first aspect can reliably drain water that accumulates on the tray, compared to systems that have a tank or drain holes.

[0018] The drainage system for the tray according to the second aspect allows water that accumulates on the tray to be temporarily drained, compared to a tray that simply has holes in it.

[0019] The drainage system for the tray according to the third aspect allows water that accumulates on the tray to be temporarily drained, compared to a tray that simply has holes.

[0020] According to the tray drainage system of the fourth aspect, the water received in the water receiving tank can be drained downstream at a constant rate, compared to a system having a hole or a tank in the tray.

[0021] According to the tray drainage system of the fifth aspect, compared to a system that requires manual operation, the water received in the water receiving tank can be automatically discharged downstream at a constant amount.

[0022] The tray drainage system according to the sixth aspect allows moisture that accumulates on the tray when the tray is placed on the lifting device to be drained downstream, compared to systems that require manual operation.

[0023] According to the tray drainage system of the seventh aspect, compared to systems in which the tray drainage mechanism and the water storage section drainage mechanism have different configurations, the manufacturing work is unified, thereby improving work efficiency and reducing costs.

[0024] According to the tray drainage system of the eighth aspect, compared to a system that requires manual operation, water that accumulates in the water reservoir when the lifting device is lowered can be drained downstream.

[0025] According to the mechanical parking device of the ninth aspect, moisture brought onto the tray by a vehicle can be drained from the tray to the downstream side at an appropriate timing. [Brief explanation of the drawings]

[0026] [Figure 1] FIG. 2 is a plan view showing the entire tray according to the first embodiment. [Figure 2] 4 is a side cross-sectional view showing a drainage mechanism of the tray according to the first embodiment and a water receiving portion that opens and closes the drainage mechanism. FIG. [Figure 3] 10 is a side cross-sectional view showing a state in which the drainage mechanism of the tray according to the first embodiment is opened by the water receiving portion. FIG. [Figure 4] FIG. 2 is a plan view showing an outline of the water receiving portion according to the first embodiment. [Figure 5] 3 is a side cross-sectional view of the drainage mechanism of the tray shown in FIG. 2 and the water receiving portion that opens and closes the drainage mechanism, viewed from a different angle. FIG. [Figure 6] 10 is a side view showing a state in which the tray according to the first embodiment is placed on a lift and the water receiving portion receives water by opening the drainage mechanism of the tray. FIG. [Figure 7] 1 is a side view showing a state in which a tray according to the first embodiment is placed on a lift and the lift moves up and down. FIG. [Figure 8] 10 is a side view showing a state in which a tray according to the first embodiment is placed on a lift and lowered, the tray is supported on the upper level L2, and the drainage mechanism of the tray and the water receiving portion of the lift are separated. FIG. [Figure 9]This is a side view showing the state in which the tray of the first embodiment is placed on a lift and lowered, the tray is supported at the lower level L3, and the moisture accumulated in the water storage tank is drained into the boiler area of ​​the lift pit through the pit water receiving section. [Figure 10] FIG. 10 is a side view showing a state in which a tray according to a second embodiment is supported at a landing level L1 and a lift approaches the tray from below. [Figure 11] 10 is a side view showing a state in which a tray according to a second embodiment is placed on a lift and the water receiving portion receives water by opening the drainage mechanism of the tray. FIG. [Figure 12] A side cross-sectional view showing the entire mechanical parking device related to the first embodiment. [Figure 13] FIG. 10 is a plan view showing the entire tray according to a third embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0027] An example of a tray drainage system according to this embodiment and a mechanical parking device using the same will be described with reference to the drawings. Note that the arrow W in the drawings indicates the width direction of the device, the arrow D indicates the depth direction of the device, and the arrow H indicates the height direction of the device. The width direction W of the device is sometimes referred to as the "short side direction of the tray," the depth direction D of the device is sometimes referred to as the "longitudinal direction of the tray," the direction along the height direction H of the device is sometimes referred to as the "vertical direction," the direction of the height direction H of the device is sometimes referred to as the "upper" or "upper" side, the direction opposite the height direction H of the device is sometimes referred to as the "lower" or "lower" side, and the view from the side of the height direction H of the device is sometimes referred to as the "plan view."

[0028] Furthermore, the moisture content in this embodiment refers to water only, water containing dust, water containing ice particles and the like as a result of melting ice and snow, and the like.

[0029] [First embodiment] <Basic configuration of tray drainage system> FIG. 1 is a plan view showing the entire tray 2. Tray 2 is rectangular in plan view, and a water-stopping member 2A is provided around the rectangular tray 2 to prevent moisture on the tray 2 from flowing down outside. The water-stopping member 2A only needs to have a height and width sufficient to block moisture from the tray 2. In this embodiment, a round steel bar with a diameter of 19 mm is used. The top surface of tray 2 has a flat upper plate. At a location on the upper plate, an opening 2B penetrates the upper plate in the vertical direction, where a drainage mechanism 20 (described later) will be installed. From the periphery of tray 2 toward the opening 2B, the flat tray 2 has a water gradient toward the side opposite the device height direction H, and is shaped to collect moisture toward the drainage mechanism 20.

[0030] <Main components> FIG. 2 is a side cross-sectional view showing the drainage mechanism 20 of the tray 2 and the water receiving portion 30 that opens and closes the drainage mechanism 20.

[0031] [Drainage mechanism] 2, the drainage mechanism 20 includes a tubular member 2C that is provided below the opening 2B of the tray 2, has openings at the top and bottom, and has a sealing portion 2C1 formed at the top, a support member 2D that is provided on the tubular member 2C and movably supports the opening / closing member 22, a sliding member 24 that is connected to the opening / closing member 22 and slidably supported by the support member 2D, an actuated member 26 that is provided on the opposite side of the sliding member 24 from the opening / closing member 22 and is actuated by a water receiving portion 30 (described later), and a coil spring 28 that is provided between the support member 2D and the actuated member 26 and urges the opening / closing member 22 in a direction that brings it into contact with the sealing portion 2C1. Here, the water receiving portion 30 is an example of an actuating portion, the support member 2D is an example of a supporting portion, and the coil spring 28 is an example of a urging member.

[0032] (Cylindrical member) 2, in this embodiment, tubular member 2C is watertightly fixed to the lower part of spacer 2E, which is watertightly fixed around the periphery of the lower part of opening 2B provided in tray 2. Tube member 2C is a cylindrical member as a whole, and has a sealing part 2C1 at the upper part of tubular member 2C, which has an inclined surface formed in a shape that opens upward, and the central part in the vertical direction of tubular member 2C is formed to have the same diameter, and the lower side of the central part has an expanded diameter that opens downward and has an inclined surface, and the part below the expanded diameter part extends downward while maintaining the expanded diameter.

[0033] Furthermore, a support member 2D is fixed inside the cylindrical member 2C at the center in the up-down direction of the cylindrical member 2C. The support member 2D supports a sliding member 24 (described later) fixed to an opening / closing member 22 (described later) so that the sliding member 24 can slide in the up-down direction. In this embodiment, a cylindrical pipe is used as the support member 2D, and the support member 2D is fixed to a position where the sliding member 24 can be slidably supported using a bracket fixed to the inner surface of the cylindrical member 2C, thereby supporting the columnar sliding member 24.

[0034] (Opening and closing parts) 2, the open-close member 22 has a sliding member 24 fixed to its underside, extending vertically and having a predetermined dimension, and an actuated member 26 fixed to the bottom of the sliding member 24 and acting on an actuating member 34 provided in the water receiving portion 30 (described later). In this embodiment, the open-close member 22 is a disk-shaped member having a size and thickness sufficient to watertightly seal the sealing portion 2C1 formed on the upper portion of the tubular member 2C, and the circumferential portion of this member has an inclined surface whose diameter tapers downward at an angle that matches the inclination angle of the sealing portion 2C1. The open-close member 22 is made of a resin material such as rubber.

[0035] (coil spring) 2 and 3, the coil spring 28 is provided between the support member 2D and the actuated member 26, and urges the opening / closing member 22 in a direction that brings the opening / closing member 22 into contact with the sealing portion 2C1. In this embodiment, the coil spring 28 is provided so as to be inserted into a sliding member 24 that connects the support member 2D provided on the cylindrical member 2C, the opening / closing member 22, and the actuated member 26, and urges the opening / closing member 22 downward in the device height direction H, i.e., toward the sealing portion 2C1.

[0036] Figure 2 is a side cross-sectional view showing the drainage mechanism 20 of the tray 2 and the water receiving portion 30 that opens and closes the drainage mechanism 20, Figure 4 is a plan view showing an overview of the water receiving portion, and Figure 5 is a side cross-sectional view of the drainage mechanism of the tray 2 and the water receiving portion that opens and closes the drainage mechanism shown in Figure 2, viewed from a different angle.

[0037] [Water receiving part (operating part)] 2, 4, and 5, the water receiving section 30 has a water receiving tank 32 that is open upward, and an actuating member 34 that is provided inside the water receiving tank 32 and extends toward the actuated member 26 of the drainage mechanism 20, and moves forward and backward relative to the actuated member 26. The water receiving tank 32 provided in the water receiving section 30 also has a drainage hole 32A that drains water received from the drainage mechanism 20 side. Here, the water receiving tank 32 is an example of a water receiving tank, and the drainage hole 32A is an example of a drainage section that is configured together with a drainage pipe 38, which will be described later.

[0038] In this embodiment, the water receiving section 30 is provided on the lifting / lowering section 18. Specifically, the water receiving section 30 is provided on the upper part of the lifting / lowering section 18 and is configured to include a frame member 36 provided via a spacer 36B, a receiving member 36A fixed to the vertical middle part of the frame member 36, a water receiving tank 32 provided above the receiving member 36A and having an opening at the top, an operating member 34 provided inside the water receiving tank 32 and protruding above the opening of the water receiving tank 32, and a tip 34A provided on the top of the operating member 34 and protruding upward. Here, the lifting / lowering section 18 is an example of a lifting device.

[0039] A drain hole 32A is opened at the bottom of the water receiving tank 32, and a drain pipe 38 is connected to it via an elbow pipe. The downstream configuration of the drain pipe 38 will be described later. Here, the drain pipe 38 is an example of a drainage section configured together with the drain hole 32A.

[0040] <Function of main parts> FIG. 3 shows the operation of the main part, in which the drainage mechanism 20 of the tray 2 is opened by the water receiving portion 30.

[0041] Fig. 2 shows a state in which the drainage mechanism 20 and the water receiving portion 30 of the tray 2 are separated in the vertical direction, but in the state shown in Fig. 2, when moisture is brought to the upper portion of the tray 2 by an item placed on top of the tray 2, the moisture collects at the position of the drainage mechanism 20 and accumulates at the upper portion of the tray 2. Fig. 2 does not show the moisture accumulating at the upper portion of the tray 2. In this state, the water receiving portion 30 rises in the direction of arrow A, that is, in the direction along the device height direction H from below toward the tray 2 landing position L1 relative to the drainage mechanism 20 provided on the tray 2.

[0042] As shown in Figure 3, when the water receiving portion 30 is raised by the lifting portion 18, the water receiving portion 30 comes into contact with the drainage mechanism 20 provided on the tray 2. Specifically, the tip 34A of the operating member 34 protruding from inside the water receiving tank 32 of the water receiving portion 30 pushes up the actuated member 26 of the drainage mechanism 20 against the biasing force of the coil spring 28. The open / close member 22, which is attached to the actuated member 26 via the sliding member 24, is pushed up from the sealing portion 2C1 of the tubular member 2C provided on the tray 2, opening the sealing portion 2C1. As a result, moisture that has accumulated around the drainage mechanism 20 in the upper part of the tray 2 flows down through the inside of the tubular member 2C into the water receiving tank 32 of the water receiving portion 30, and then flows down through the drainage hole 32A provided in the water receiving tank 32 into the drainage pipe 38.

[0043] As shown in Figure 4, the drain hole 32A that opens into the bottom of the water receiving tank 32 is provided in part of the bottom, so if the amount of moisture from the tray 2 is large, some of the moisture will collect in the water receiving tank 32 and then pass through the drain hole 32A and gradually all of the moisture will flow down, but if the amount of moisture from the tray 2 is not large, the moisture will not collect in the water receiving tank 32 and will pass through the drain hole 32A and flow down into the drain pipe 38.

[0044] Here, the lifting unit 18 that lifts the water receiving unit 30 may be raised and lowered using various mechanisms that can achieve lifting and lowering operations, such as a link mechanism or a cam mechanism, using, for example, an electric motor or a hydraulic device. In this embodiment, the operation of the main parts will be specifically described using an example in which it is used in a mechanical parking device 1.

[0045] <Configuration of mechanical parking device> 12 shows a mechanical parking device 1. It is configured to include a tray 2 on which a vehicle 4 is placed, a boarding / deboarding room 12 where the vehicle 4 gets on and off the tray 2, a storage room 14 that stores the tray 2, and a lift 18 that connects the boarding / deboarding room 12 and the storage room 14 and on which the tray 2 is placed. Specifically, the mechanical parking device 1 is configured by a building skeleton 10, including the boarding / deboarding room 12 where the vehicle 4 moves forward and backward at the tray 2 landing position L1, and the storage room 14 in which a storage device 14A that stores and parks the vehicle 4 is installed.

[0046] In the boarding / exiting room 12, an opening 12B large enough to allow the tray 2 to pass through is formed in the floor, and a wall of the body 10 is opened to form an entrance / exit 12A so that the vehicle 4 can move in and out, and an entrance / exit door (not shown) is installed at the entrance / exit 12A so that it can be opened and closed. A tray support device (not shown) is provided in the opening 12B, which can move in and out relative to the tray 2 located in the opening 12B so that the tray 2 can be supported or raised and lowered to the landing position L1.

[0047] In this embodiment, a storage device 14A formed in two levels, upper and lower, is installed on the body 10 in the storage room 14. Figure 12 shows an example in which the storage device 14A is formed so that the level of the upper surface of the trays 2 in the upper level is upper level L2 and the level of the upper surface of the trays 2 in the lower level is lower level L3, with the upper level L2 and the lower level L3 separated vertically by a predetermined height. The storage device 14A may be of any type that uses trays, such as a puzzle-type flat circulation type, a horizontal circulation type, a box-type circulation type, or a circular circulation type.

[0048] The lift 18 connects the boarding / deboarding room 12 and the storage room 14, and raises and lowers the tray 2 placed thereon in response to the entry or exit of the vehicle 4. In this embodiment, a lift pit 16 is formed below the boarding / deboarding room 12 in the storage room 14, and a lift column 18A is installed along the height direction H of the device from the lift pit 16 to the opening 12B of the boarding / deboarding room 12, with the lift 18 being able to rise and fall on the lift column 18A. The lift column 18A is supported by a support member 18B on the body 10 on the side opposite the storage device 14A. In Figure 12, a tray 2 without a vehicle 4 placed on it at the landing level L1 of the boarding / disembarking room 12, a tray 2 without a vehicle 4 placed on it at the upper level of the storage device 14A, i.e., the upper level L2, and a tray 2 with a vehicle 4 placed on it at the lower level of the storage device 14A, i.e., the lower level L3, are each shown by virtual lines, and one tray 2 rises and falls in response to the entry or exit of a vehicle 4.

[0049] [Water receiving part (operating part) in mechanical parking system] 6, 8 and 2, the water receiving part 30 has a water receiving tank 32 that is open at the top, and an actuating member 34 that is provided inside the water receiving tank 32 and extends toward the actuated member 26 of the drainage mechanism 20, and moves forward and backward relative to the actuated member 26. In addition, the water receiving tank 32 provided in the water receiving part 30 has a drainage hole 32A that drains the water received from the drainage mechanism 20 side.

[0050] In this embodiment, the water receiving section 30 is provided on the lift 18, which serves as the lifting section. Specifically, the water receiving section 30 is provided on the upper part of the frame body 18C, which is the upper structure of the lift 18. The configuration of the water receiving section 30 is the same as that described above, so a description thereof will be omitted (see Figures 2 and 3). Here, the lift 18 is an example of a lifting device.

[0051] A drain pipe 38 is connected via an elbow pipe to a drain hole 32A that opens at the bottom of the water receiving tank 32. The water receiving tank 32 and the drain pipe 38 have the same configuration as those described above, so a description thereof will be omitted (see Figures 2 and 3).

[0052] (Water tank) As shown in FIG. 6 , a water storage tank 40 is provided on the lift column 18A side of the frame 18C of the lift 18, below the frame 18C, with an upward opening. A drainage mechanism 42 is provided at the bottom of the water storage tank 40. The drainage mechanism 42 has a structure similar to the drainage mechanism 20 provided on the tray 2 described above. A drainage pipe 38 provided on the water receiving portion 30 is inserted into the upper opening of the water storage tank 40, and the downstream end of the drainage pipe 38 reaches above the bottom of the water storage tank 40. In this embodiment, the water storage tank 40 has a rectangular tubular shape, but it may also be cylindrical or have a shape that is narrower at the bottom than at the top. Any shape is acceptable as long as it can store water. However, it is preferable that the bottom of the water storage tank 40 has a water gradient in the direction in which water flows toward the drainage mechanism 42. Here, the water storage tank 40 is an example of a water storage portion.

[0053] (Pit water receiving section) As shown in Figure 9, the pit water receiving section 50 includes a water receiving tank 52 with an opening at the top, and an actuating member 54 that is provided inside the water receiving tank 52 and pushes up from below the drainage mechanism 42 provided in the water storage tank 40 to drain the water. The pit water receiving section 50 is provided at a predetermined height from the bottom of the lift pit 16. Specifically, when the lift 18 stops at the lower level L3 of the storage device 14A, the actuating member 54 provided in the pit water receiving section 50 acts on the drainage mechanism 42 provided in the water storage tank 40 installed on the lift 18 to drain the water that accumulates in the water storage tank 40. An opening is provided in the bottom of the water receiving tank 52, and a drainage pipe 56 that is inserted into the boiler room 16A (described later) and that drains the water into the boiler room 16A is connected to the opening. In this embodiment, the pit water receiving portion 50 is supported by a support member that rises from the bottom surface of the lift pit 16, but it may also be provided on the lift column 18A via a bracket or the like.

[0054] (Kamaba) As shown in Figure 9, boiler room 16A is a hole dug lower than the bottom surface of lift pit 16, and temporarily stores the water drained from pit water receiving section 50. A drainage pump (not shown) is installed in boiler room 16A, and when a certain amount of water has accumulated in boiler room 16A, the drainage pump discharges the accumulated water to the outside.

[0055] <Drainage operation in the mechanical parking device of the first embodiment> The drainage operation of water accumulated in the tray 2 in the mechanical parking device 1 of the first embodiment will be described with reference to FIGS. 2, 3, and 6 to 9. FIG.

[0056] As shown in Figure 6, the tray 2 is placed on the lift 18 and is positioned and stopped at the landing level L1 in the opening 12B. The tray 2 can be empty or have a vehicle 4 placed on it, but Figure 6 shows the tray 2 in an empty state with no vehicle 4 placed on it. Also, although not shown, a certain amount of moisture has accumulated on the top surface of the tray 2.

[0057] The drainage mechanism 20 provided on the tray 2 has the opening / closing member 22 in an open state relative to the sealing portion 2C1, and water is drained into the water receiving tank 32 of the water receiving portion 30 (see FIG. 3). The drainage mechanism 42 provided on the water storage tank 40 is in a sealed state with the opening / closing member 22 in watertight contact with the sealing portion 2C1 (see FIG. 2). In this way, the water receiving portion 30 installed on the lift 18 opens the drainage mechanism 20 of the tray 2 to receive water, and the water received by the water receiving tank 32 of the water receiving portion 30 passes through the drainage pipe 38 and is stored in the water storage tank 40.

[0058] Specifically, the tip 34A of the actuating member 34 protruding from inside the water receiving tank 32 of the water receiving portion 30 pushes up the actuated member 26 of the drainage mechanism 20 against the biasing force of the coil spring 28. The open / close member 22, which is attached to the actuated member 26 via the sliding member 24, is pushed up from the sealing portion 2C1 of the tubular member 2C attached to the tray 2, opening the sealing portion 2C1. As a result, moisture accumulated around the drainage mechanism 20 in the upper part of the tray 2 flows down through the inside of the tubular member 2C into the water receiving tank 32 of the water receiving portion 30, and then through the drainage hole 32A provided in the water receiving tank 32 and into the drainage pipe 38 (see FIG. 3). The moisture flowing down the drainage pipe 38 flows down into the water storage tank 40. At this time, because the drainage mechanism 42 provided in the water storage tank 40 is sealed watertight, the moisture flowing down from the drainage pipe 38 is temporarily stored in the water storage tank 40.

[0059] Next, when the lift 18 descends along the lift column 18A in the direction of arrow B shown in Fig. 6, the lift 18 reaches a descending state in the direction of arrow B shown in Fig. 7. In this state, if a large amount of moisture has accumulated in the tray 2, the open / close member 22 of the drainage mechanism 20 is in an open state, separated from the sealing portion 2C1 by the operating member 34 provided on the water receiving tank 32, so that moisture on the tray 2 continues to drain into the water storage tank 40 via the water receiving portion 30 even after the tray 2 has moved away from the landing level L1. On the other hand, if the amount of moisture accumulated in the tray 2 is small, the open / close member 22 of the drainage mechanism 20 remains in an open state, separated from the sealing portion 2C1 by the operating member 34 provided on the water receiving tank 32, and drainage of moisture from the tray 2 ends, the water receiving tank 32 becomes empty, and moisture is stored in the water storage tank 40.

[0060] FIG. 8 shows a state in which the tray 2 is placed on the lift 18 and lowered, the tray 2 is stopped at the upper level L2, and the drainage mechanism 20 of the tray 2 and the water receiving portion 30 of the lift 18 are separated.

[0061] 8, the lift 18 leaves the tray 2 landing level L1, descends in the direction of arrow B, and stops at the upper level L2 of the storage device 14A. Specifically, a support member (not shown) protrudes within the lifting range of the mounting member 19 so as to be able to support the mounting member 19, and the mounting member 19 is supported by the support member (not shown) while being supported on the lift 18, and rises above the frame 18C until the tray 2 stops at the upper level L2, and the lift 18 also stops. At this time, the upper surface of the mounting member 19 is at the same level as the upper surface of the rail at the upper level L2 of the storage device 14A, and the tray 2 is movable between the lift 18 and the storage device 14A. In this state, the drainage mechanism 20 provided on the tray 2 and the water receiving portion 30 provided on the lift 18 are separated, whereby the opening / closing member 22 of the drainage mechanism 20 provided on the tray 2 comes into watertight contact with the sealing portion 2C1 to form a sealed state and seal the opening 12B (see Figure 2). Because the drainage mechanism 20 and the water receiving portion 30 are separated, the tray 2 is allowed to move between the lift 18 and the storage device 14A.

[0062] Next, we will explain how to drain the moisture accumulated in the water storage tank 40. Figure 9 shows the state in which the tray 2 is placed on the lift 18 and lowered, so that the tray 2 is supported at the lower level L3, and the moisture accumulated in the water storage tank 40 is drained into the boiler area 16A of the lift pit 16 via the pit water receiving section.

[0063] As shown in FIG. 9, the lift 18 descends until the tray 2 stops at the lower level L3 of the storage device 14A (see also FIG. 12). Specifically, a support member (not shown) protrudes within the lifting range of the mounting member 19 to support the mounting member 19. The mounting member 19, while supported on the lift 18, is supported by the support member (not shown), and rises above the frame 18C until the tray 2 stops at the lower level L3, and the lift 18 also stops. At this time, the upper surface of the mounting member 19 is flush with the upper surface of the rail at the lower level L3 of the storage device 14A, allowing the tray 2 to move between the lift 18 and the storage device 14A. In this state, the drainage mechanism 20 provided on the tray 2 and the water receiving portion 30 provided on the lift 18 are separated, and the opening / closing member 22 of the drainage mechanism 20 provided on the tray 2 comes into watertight contact with the sealing portion 2C1, forming a sealed state and sealing the opening 12B. Since the drainage mechanism 20 and the water receiving portion 30 are separated from each other, the tray 2 is allowed to move between the lift 18 and the storage device 14A.

[0064] This brings the drainage mechanism 42 provided in the water storage tank 40 installed in the lift 18 into contact with the operating member 54 provided in the pit water receiving section 50 installed in the lift pit 16. At this time, the drainage mechanism 42 is opened, but since the operation of the drainage mechanism 42 is the same as that of the drainage mechanism 20, a description thereof will be omitted.

[0065] Drainage mechanism 42 is opened, and the water stored in water storage tank 40 flows down into water receiving tank 52 in pit water receiving section 50 installed below water storage tank 40. The water that flows down into water receiving tank 52 flows down through drainage pipe 56 connected to the opening at the bottom of water receiving tank 52 and is stored in boiler room 16A installed in lift pit 16. The water stored in boiler room 16A is discharged to the outside by a drainage pump (not shown).

[0066] At the lower level L3 shown in FIG. 9, when water is drained from the water receiving tank 52 to the boiler area 16A of the lift pit 16, the water receiving tank 32, the water storage tank 40, and the water receiving tank 52 are all empty. Then, when the lift 18 is raised in the direction of arrow A shown in FIG. 7, the drainage mechanism 42 of the water storage tank 40 is sealed watertight, and the mounting member 19 descends toward the frame 18C of the lift 18. As shown in FIG. 3, the operating member 34 of the water receiving portion 30 provided on the lift 18 moves the opening / closing member 22 of the drainage mechanism 20 provided on the tray 2 away from the sealing portion 2C1, thereby opening the sealing portion 2C1. Then, to allow the next vehicle 4 to enter or leave the shed, the lift 18 ascends to the upper level L2 or passes through the upper level L2 and stops at the landing level L1. At this time, the support member (not shown) that protrudes into the lifting range of the mounting member 19 is retracted to a position where it does not protrude into the lifting range. During this time, the drainage mechanism 20 provided on the tray 2 is left in an open state, so that moisture that has accumulated on the tray 2 while it is stored in the storage device 14A, or moisture that will be brought in by the vehicle 4 during the next entry and exit, is reliably drained from the tray 2.

[0067] <Drainage operation in the mechanical parking device of the second embodiment> 10 shows a second embodiment in which a lift 18 having a water receiving portion 30 approaches a tray 2. The second embodiment shows a type in which a special turntable (not shown) is arranged on the floor of the boarding / deboarding compartment 12, or a so-called seismically isolated boarding / deboarding compartment 12 in which the boarding / deboarding compartment 12 and the storage compartment 14 are separated in the vertical direction by a seismic isolation device. In the case where the special turntable is arranged on the floor of the boarding / deboarding compartment 12, the opening 12B is provided in the special turntable rather than in the body 10.

[0068] As shown in Figure 10, the tray 2 is supported by a tray support device (not shown) provided in the opening 12B. The lift 18 is supported by a lift column 18A and rises in the direction of arrow A. The tray 2 may be empty or may have a vehicle 4 placed on it. Although not shown, a certain amount of moisture has accumulated on the upper surface of the tray 2. The drainage mechanism 20 provided on the tray 2 and the drainage mechanism 42 provided on the water storage tank 40 are both in a sealed state with the opening / closing member 22 in contact with the sealing portion 2C1 (see Figure 2).

[0069] Figure 11 shows a state in which the tray 2 is placed on the lift 18 and the water receiving portion 30 receives water by opening the drainage mechanism 20 of the tray 2. As shown in Figures 7 and 8, the tray 2 is placed on a mounting member 19 that is provided so as to be able to rise and fall relative to the frame body 18C of the lift 18, and the mounting member 19 is lowered toward the frame body 18C. At this time, the water receiving portion 30 is raised by the lift 18, and the water receiving portion 30 comes into contact with the drainage mechanism 20 provided on the tray 2.

[0070] Specifically, the tip 34A of the actuating member 34 protruding from inside the water receiving tank 32 of the water receiving portion 30 pushes up the actuated member 26 of the drainage mechanism 20 against the biasing force of the coil spring 28. The open / close member 22, which is attached to the actuated member 26 via the sliding member 24, is pushed up from the sealing portion 2C1 of the tubular member 2C attached to the tray 2, opening the sealing portion 2C1. As a result, moisture accumulated around the drainage mechanism 20 in the upper part of the tray 2 flows down through the inside of the tubular member 2C into the water receiving tank 32 of the water receiving portion 30, and then through the drain hole 32A provided in the water receiving tank 32 and into the drainage pipe 38 (see FIG. 3). The moisture flowing down the drainage pipe 38 flows down into the water storage tank 40. At this time, because the drainage mechanism 42 provided in the water storage tank 40 is closed, the moisture flowing down from the drainage pipe 38 is temporarily stored in the water storage tank 40.

[0071] Next, the lift 18 lifts the tray 2 above the landing level L1 and stops. In this state, the tray support device (not shown) retracts from the tray 2, and the lift 18 descends in the direction of arrow B.

[0072] The subsequent operations are the same as those in the first embodiment, and will be described with reference to FIGS. 8 and 9 which explain the operations in the first embodiment.

[0073] 8, the lift 18 leaves the tray 2 landing level L1, descends in the direction of arrow B, and stops at the upper level L2 of the storage device 14A. Specifically, a support member (not shown) protrudes within the lifting range of the mounting member 19 so as to be able to support the mounting member 19, and the mounting member 19 is supported by the support member (not shown) while being supported on the lift 18, and rises above the frame 18C until the tray 2 stops at the upper level L2, and the lift 18 also stops. At this time, the upper surface of the mounting member 19 is at the same level as the upper surface of the rail at the upper level L2 of the storage device 14A, and the tray 2 is movable between the lift 18 and the storage device 14A. In this state, the drainage mechanism 20 provided on the tray 2 and the water receiving portion 30 provided on the lift 18 are separated, whereby the opening / closing member 22 of the drainage mechanism 20 provided on the tray 2 comes into watertight contact with the sealing portion 2C1 to form a sealed state and seal the opening 12B (see Figure 2). Because the drainage mechanism 20 and the water receiving portion 30 are separated, the tray 2 is allowed to move between the lift 18 and the storage device 14A.

[0074] Next, we will explain how to drain the moisture accumulated in the water storage tank 40. Figure 9 shows the state in which the tray 2 is placed on the lift 18 and lowered, so that the tray 2 is supported at the lower level L3, and the moisture accumulated in the water storage tank 40 is drained into the boiler area 16A of the lift pit 16 via the pit water receiving section.

[0075] As shown in FIG. 9, the lift 18 descends until the tray 2 stops at the lower level L3 of the storage device 14A (see also FIG. 12). Specifically, a support member (not shown) protrudes within the lifting range of the mounting member 19 to support the mounting member 19. The mounting member 19, while supported on the lift 18, is supported by the support member (not shown), and rises above the frame 18C until the tray 2 stops at the lower level L3, and the lift 18 also stops. At this time, the upper surface of the mounting member 19 is flush with the upper surface of the rail at the lower level L3 of the storage device 14A, allowing the tray 2 to move between the lift 18 and the storage device 14A. In this state, the drainage mechanism 20 provided on the tray 2 and the water receiving portion 30 provided on the lift 18 are separated, and the opening / closing member 22 of the drainage mechanism 20 provided on the tray 2 comes into watertight contact with the sealing portion 2C1, forming a sealed state and sealing the opening 12B. Since the drainage mechanism 20 and the water receiving portion 30 are separated from each other, the tray 2 is allowed to move between the lift 18 and the storage device 14A.

[0076] This brings the drainage mechanism 42 provided in the water storage tank 40 installed in the lift 18 into contact with the operating member 54 provided in the pit water receiving section 50 installed in the lift pit 16. At this time, the drainage mechanism 42 is opened, but since the operation of the drainage mechanism 42 is the same as that of the drainage mechanism 20, a description thereof will be omitted.

[0077] Drainage mechanism 42 is opened, and the water stored in water storage tank 40 flows down into water receiving tank 52 in pit water receiving section 50 installed below water storage tank 40. The water that flows down into water receiving tank 52 flows down through drainage pipe 56 connected to the opening at the bottom of water receiving tank 52 and is stored in boiler room 16A installed in lift pit 16. The water stored in boiler room 16A is discharged to the outside by a drainage pump (not shown).

[0078] At the lower level L3 shown in FIG. 9, when water is drained from the water receiving tank 52 to the boiler area 16A of the lift pit 16, the water receiving tank 32, the water storage tank 40, and the water receiving tank 52 are all empty. Then, when the lift 18 is raised in the direction of arrow A shown in FIG. 7, the drainage mechanism 42 of the water storage tank 40 is sealed watertight, and the mounting member 19 descends toward the frame 18C of the lift 18. As shown in FIG. 3, the operating member 34 of the water receiving portion 30 provided on the lift 18 moves the opening / closing member 22 of the drainage mechanism 20 provided on the tray 2 away from the sealing portion 2C1, thereby opening the sealing portion 2C1. Then, to allow the next vehicle 4 to enter or leave the shed, the lift 18 ascends to the upper level L2 or passes through the upper level L2 and stops at the landing level L1. At this time, the support member (not shown) that protrudes into the lifting range of the mounting member 19 is retracted to a position where it does not protrude into the lifting range. During this time, the drainage mechanism 20 provided on the tray 2 is left in an open state, so that moisture that has accumulated on the tray 2 while it is stored in the storage device 14A, or moisture that will be brought in by the vehicle 4 during the next entry and exit, is reliably drained from the tray 2.

[0079] Drainage mechanism 42 is opened, and the water stored in water storage tank 40 flows down into water receiving tank 52 in pit water receiving section 50 installed below water storage tank 40. The water that flows down into water receiving tank 52 flows down through drainage pipe 56 connected to the opening at the bottom of water receiving tank 52 and is stored in boiler room 16A installed in lift pit 16. The water stored in boiler room 16A is discharged to the outside by a drainage pump (not shown).

[0080] Third Embodiment Next, a third embodiment will be described with reference to FIG. The drainage system for the tray according to the third embodiment differs in configuration in that a plurality of drainage mechanisms 20 are provided in the tray 2 according to the first embodiment.

[0081] [Drainage mechanism] In this embodiment, two drainage mechanisms 20 are provided at a distance from each other in the longitudinal center of the tray 2 along the lateral direction of the tray 2. The position of the drainage mechanisms 20 is not limited to this, and they may be located anywhere as long as they can be aligned with the position of the water receiving portion 30 provided below the tray 2.

[0082] In this embodiment, two drainage mechanisms 20 are provided, and therefore two water receiving sections 30 are also provided below the tray 2. When this is applied to the lift 18 of the mechanical parking device 1, the water receiving sections 30, the water storage tank 40, the pit water receiving section 50, and the boiler section 16A may be provided in two separate systems, with two each, or two water receiving sections 30 may be provided, and two drainage pipes 38 from the two water receiving sections 30 may be led to one water storage tank 40, with one each of the water storage tank 40, the pit water receiving section 50, and the boiler section 16A forming one system midway through the drainage system, or the water receiving tank 32 of the water receiving section 30 may be sized to accommodate the two drainage mechanisms 20, and one each of the water receiving section 30, the water storage tank 40, the pit water receiving section 50, and the boiler section 16A may be formed into one system.

[0083] As described above in detail, the tray drainage system of the present invention is a drainage system for a tray 2 comprising a drainage mechanism 20 provided in the tray 2 on which articles are placed, and a water receiving portion 30 that acts on the drainage mechanism 20 to open it, the drainage mechanism 20 being provided below the opening 2B that penetrates the floor of the tray 2 and comprising a sealing portion 2C1 that seals out moisture, and an opening / closing member 22 that opens and closes the sealing portion 2C1, the water receiving portion 30 comprising an operating member 34 that moves the opening / closing member 22 in a direction away from the sealing portion 2C1 to open the sealing portion 2C1, and the water receiving portion 30 opens the sealing portion 2C1 to drain moisture that has accumulated in the tray 2.

[0084] This allows the water that accumulates on the tray 2 to be drained more reliably than with a tank or drain hole.

[0085] In addition, the drainage system for the tray according to the present invention has a drainage mechanism 20 which is provided below the opening 2B and which has openings at the top and bottom and a sealing portion 2C1 formed at the top, a support member 2D which is provided on the tubular member 2C and which movably supports the opening / closing member 22, a sliding member 24 which is connected to the opening / closing member 22 and is slidably supported by the support member 2D, an actuated member 26 which is provided on the opposite side of the sliding member 24 from the opening / closing member 22 and which is acted upon by the water receiving portion 30, and a coil spring 28 which is provided between the support member 2D and the actuated member 26 and which urges the opening / closing member 22 in the direction of contacting the sealing portion 2C1.

[0086] This allows moisture that accumulates on the tray 2 to be temporarily drained, compared to a tray that simply has holes.

[0087] In addition, in the tray drainage system of the present invention, the water receiving section 30 has a water receiving tank 32 that is open at the top, and an operating member 34 that is provided inside the water receiving tank 32 and extends toward the actuated member 26 of the drainage mechanism 20, and moves forward and backward relative to the actuated member 26.

[0088] This allows moisture that accumulates on the tray 2 to be temporarily drained, compared to a tray that simply has holes.

[0089] In addition, in the drainage system for the tray according to the present invention, the water receiving tank 32 provided in the water receiving portion 30 has the drainage hole 32A and the drainage pipe 38 for draining the water received from the drainage mechanism 20 side.

[0090] This allows the water received in the water receiving tank 32 to be discharged downstream at a constant rate, compared to a tray having holes or a tank.

[0091] In addition, in the tray drainage system according to the present invention, the water receiving portion 30 is provided on the lift portion 18 or the lift 18 on which the tray 2 is placed and raised and lowered.

[0092] This allows the water received by the water receiving portion 30 to be automatically discharged downstream at a constant rate, compared to a manual operation.

[0093] In addition, the tray drainage system of the present invention has a configuration in which the water receiving portion 30 discharges the moisture received by the water receiving portion 30 into a water storage tank 40 provided on the lifting portion 18 or lift 18 when the tray 2 is placed on the lifting portion 18 or lift 18.

[0094] This makes it possible to discharge moisture that accumulates on the tray 2 when the tray 2 is placed on the lifting unit 18 or the lift 18 downstream, compared to a manual operation.

[0095] In addition, in the drainage system for a tray according to the present invention, the water storage tank 40 is provided with a drainage mechanism 42 that is the same as the drainage mechanism 20 below the water storage tank 40 .

[0096] This allows the work to be standardized during manufacturing, compared to when the drainage mechanism 20 of the tray 2 and the drainage mechanism 42 of the water storage tank 40 are configured differently, thereby improving work efficiency and reducing costs.

[0097] In addition, in the tray drainage system of the present invention, the drainage mechanism 42 of the water storage tank 40 is configured to drain water into the opposing and adjacent pit water receiving section 50 when the lifting section 18 or the lift 18 descends.

[0098] This allows water that accumulates in the water storage tank 40 when the lifting section 18 or the lift 18 is lowered to be drained downstream, compared to a manual operation.

[0099] In addition, the mechanical parking device of the present invention comprises a tray 2 for placing a vehicle 4, a boarding and disembarking room 12 where the vehicle 4 gets on and off the tray 2, a storage room 14 for storing the tray 2, a lift 18 that connects the boarding and disembarking room 12 and the storage room 14 and for placing the tray 2 thereon, and a drainage system for the tray related to any of the above.

[0100] This allows moisture brought onto the tray 2 by the vehicle 4 to be drained from the tray 2 to the downstream side at an appropriate timing.

[0101] The embodiments of the present invention have been described above by giving each embodiment, but these embodiments are merely examples, and various modifications can be made without departing from the spirit of the present invention. It goes without saying that the scope of the present invention is not limited to these embodiments.

[0102] For example, although the tubular member 2C has been described as being cylindrical, this is not limiting and tubular members of other cross-sectional shapes, such as rectangular tubes, may also be used. In such cases, the sealing portion 2C1 should be shaped so as to be able to provide a watertight seal with the opening / closing member 22.

[0103] In addition, although the support member 2D is a cylindrical pipe and the sliding member 24 is a columnar member in the above description, the support member 2D may have any shape as long as it allows moisture to pass downward, and the sliding member 24 may be a prismatic member. In this case, the support shape of the support member 2D may be formed into a rectangular tube shape to match the cross-sectional shape of the sliding member 24.

[0104] Furthermore, although the opening / closing member 22 has been described as being disc-shaped, it is not limited to this and may be elliptical, angular, pyramidal, spherical, round, etc., in which case the sealing portion 2C1 should be shaped so as to be in watertight contact with the opening / closing member 22.

[0105] Furthermore, although it has been explained that the coil spring 28 is inserted into the sliding member 24 that connects the support member 2D provided on the tubular member 2C, the opening / closing member 22, and the actuated member 26, it is of course possible to use other spring materials such as a leaf spring.

[0106] Furthermore, although it has been explained that drain hole 32A, which opens at the bottom of water receiving tank 32, and drain pipe 38 are connected via an elbow pipe, this is not limiting, and drain pipe 38 may be provided pointing directly downward from drain hole 32A without using an elbow pipe, and the extension direction of drain pipe 38 relative to drain hole 32A may be set as desired. Furthermore, when the drain side and the water receiving side are provided in the vertical direction, a string, rope, chain, or other member may be used instead of a pipe-shaped member.

[0107] Furthermore, although it has been explained that the water receiving tank 32 is provided with a drain pipe 38 and the water receiving tank 52 is provided with a drain pipe 56, it goes without saying that the drain pipes 38 and 56 can be omitted if the drainage side and the receiving side of the water are close to each other.

[0108] Furthermore, although it has been explained that the water-stopping member 2A is made of a round steel bar with a diameter of 19 mm, it is not limited to this and may be a round steel bar with a diameter of 25 mm, or a square steel bar with equivalent dimensions, or any material that exhibits water-stopping function.

[0109] Furthermore, although the storage device 14A of the mechanical parking device 1 in this embodiment has been described as being of an upper and lower two-tier type, it is not limited to this, and may be of a single tier type, or of a three-tier or more tier type. Furthermore, the number of vehicles 4 that can be stored may vary for each storage level, or the settings may be different for each storage level or within the same level based on the size of the vehicles 4 to be stored (for example, vehicle 4 storage height limit or vehicle 4 storage floor dimension limit) or vehicle 4 storage weight limit, etc. [Explanation of symbols]

[0110] 1. Mechanical parking equipment 2 trays 2A Water-stopping material 2B opening 2C Cylinder 2C1 Sealing part 2D support member (example of support part) 2E spacer 4 vehicles 10 Building frame 12 Boarding and disembarking compartment 12A entrance / exit 12B opening 14 Storage Room 14A Enclosure 16 Lift Pit 16A Kamaba 18 Elevating section, lift (an example of an elevating device) 18A Lift column 18B Support member 18C frame 19. Mounting member 20 Drainage mechanism 22 Opening and closing member 24 Sliding member 26 Actuated member 28 Coil spring (an example of a biasing member) 30 Water receiving part (an example of an operating part) 32 Water receiving tank (example of a water receiving tank) 32A Drainage hole (an example of a drainage part composed of the drainage pipe 38) 34 Actuating member 34A Tip 36 Frame material 36A receiving material 36B spacer 38 Drainage pipe (an example of a drainage part configured with the drainage hole 32A) 40 Water tank (example of water storage section) 42 Drainage mechanism 50 Pit water receiving section (example of drainage section) 52 Water receiving tank 54 Actuating member 56 Drainage pipe

Claims

1. The tray includes a drainage mechanism provided on the tray on which the article is placed, and an operating unit that acts on the drainage mechanism to open the drainage mechanism, the drainage mechanism is provided below an opening penetrating the floor of the tray and includes a sealing portion that seals out moisture, an opening / closing member that opens and closes the sealing portion, and an actuated member that is provided integrally with the opening / closing member; the actuating unit is provided in a lifting device that lifts and lowers the tray, and includes an actuating member that moves the opening / closing member in a direction away from the sealing unit to open the sealing unit, A tray drainage system in which the actuation portion opens the sealing portion to drain moisture accumulated in the tray, the lifting device includes a lifting section having a frame body, and a mounting member provided on an upper portion of the frame body so as to be able to rise and fall relative to the frame body, and on which the tray is mounted; The actuating unit has a water tank that is open at the top and is provided on the frame, and the actuating member extends inside the water tank toward the actuated member of the drainage mechanism, When the lifting device is stopped or in a lifting state in an area other than when it is stopped at the stop level of the storage device, the placing member is lowered to the frame body, so that the operating member comes into contact with the actuated member to open the sealing portion and discharge the moisture, When the lifting device stops at the stop level of the storage device, the mounting member is supported by a receiving member, and the frame body is lowered from the mounting member to a predetermined height, so that the operating member separates from the actuated member and seals the sealing portion. Tray drainage system.

2. A tray drainage system as described in Claim 1, wherein the water receiving tank provided in the operating unit has a drainage unit that drains moisture received from the side of the drainage mechanism.

3. A drainage system for a tray as described in claim 1 or 2, wherein the operating unit is configured to drain the moisture received by the operating unit into a water storage unit provided in the lifting unit when the placing member is in a lowered state on the frame body.

4. A mechanical parking device comprising: a tray for placing a vehicle; a boarding and alighting room where the vehicle gets on and off the tray; a storage room for storing the tray; a lifting device that connects the boarding and alighting room and the storage room and for placing the tray; and a drainage system for the tray described in any one of claims 1 to 3.

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