JPH03212569A - Elevating device for pool floor - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a device for raising and lowering a movable floor installed in a swimming pool or the like.

(Prior art and its section M) In order to use swimming pools such as leisure lands for multiple purposes, a part of the pool floor is raised above the water surface.
-: t I+I oil field l h n There is a demand to make the water depth variable by raising and lowering it within the L goal.

Conventionally, this type of lifting device has been used as a hydraulic shilling, a hydraulic shilling, or a pneumatic shilling, etc.
When these cylinders are installed underwater, there are problems such as the inside of the pool becoming contaminated with operating oil, moisture corroded inside the cylinder, etc., or insufficient positional accuracy being obtained.

The present invention focuses on these conventional problems and aims to provide a movable floor lifting device that prevents contamination within the pool and provides sufficient positional accuracy.

(Means for Solving the Problems) In order to achieve the above object, the present invention provides a movable floor that can be raised and lowered in the pool, and connects a hollow sealed drive box located below the movable floor. An electric motor was housed inside the drive box, and a transmission mechanism was installed on the pool floor to project the rotational force of the electric motor outside the drive box.

(Function) Based on the above configuration, by providing a drive box,
It is now possible to use an electric motor as a drive source,
The position of the movable floor can be controlled with high precision through the transmission mechanism that converts the movement of the movable floor into a lifting motion.

In addition, by making the drive box a hollow sealed structure, it is possible to prevent oil from leaking into the pool from the electric motor and the transmission mechanism provided between the electric motor and the rotating wheel protruding from the drive box. However, by using the buoyancy of the drive box, the movable floor can be raised and lowered with less driving force.

(Example) Embodiments of the present invention will be described below with reference to the accompanying drawings.

As shown in FIGS. 1 and 2, there is a pool floor 2 fixedly provided at the bottom of the pool 1, and a bit 3 opening in a concave shape in the pool floor 2. A hollow box-shaped movable floor 4 is provided.

A drive box 5 for raising and lowering a movable floor 4 is provided inside the bit 3, and the movable floor 4 and the drive box 5 are connected by four pillars 6.

As shown in FIG. 3, four racks 7 are fixed to the side wall 3a of the bit 3, and the drive box 5 is provided with a pinion 8 that meshes with the racks 7. Each rack 7 has teeth 7a carved at a predetermined pitch in the vertical direction. Four rails 32 are provided on the side wall portion 3a of the bit 3, and
A guide roller 33 that rolls into contact with each rail 32 is pivotally supported on the drive box 5, and the drive box 5 is translated in the vertical direction by rotating each pinion 8 consisting of four cylindrical gears in synchronization.

As shown in FIG. 4, the drive box 5 has a flat upper plate 3.
A packing 36 is interposed between the casing 4 and the box-shaped casing 35, and is fastened with a plurality of bolts 37 to form a sealed structure.

An electric motor 10 and a mechanism for transmitting the rotational force of the motor to each of the four pinions 8 are provided inside the drive box 5 . The motor rotational force is transmitted to the shaft 7) 14.1 via each universal joint 12.13 by the reduction gear device 11.
5) and further transmitted by a pair of reduction gears 16, 17 to four shafts 7) 24, 25 and 26, 27 via respective universal joints 18, 19, 20 or 21, 22° 23, Each shaft 7) 24, 25
,26°27 to each universal di1 inch) 28,2
9, 3.0, and 31 to transmit the rotational force to the rotating wheel 38 of each binion 8.

A tube 39 for pivotally supporting a rotating wheel 38 is welded to the casing 35 of the drive box 5, and a bearing 40 and a packing 41 are interposed between the tube 39 and the rotating wheel 38. The packing 41 is attached via the 7 flange 42 and seals the sliding portion of the rotary ring 38.

FIG. 5 shows a mechanism for locking the vertical movement of the drive box 5, and a stopper bin 4A Jar LLI is connected to the casing 35 of the drive box 5 via a tube 43.
'tD 77 m+-Mr+ rh 7 h y-Mr.
A hole 45 into which a stopper bottle 44 for a fist is inserted is provided. The holes 45 are formed at two locations: a storage position where the movable floor 4 forms the same plane as the pool floor 2, and an uppermost position where the movable floor 4 is exposed above the water surface.

A gasket 4 is installed between the tube 43 and the stopper bottle 44.
9 is inserted through the 7 runno 50, and the stopper bin 4
4 sliding parts are sealed.

The stopper bin 44 is moved in the axial direction by a screw jack 47 driven by an electric motor 46, the stroke position of which is detected via a displacement meter 48, and controlled by a control unit (not shown).

The electric motor] 0 is provided with an electromagnetic brake 9, and the rotary wheel of the electric motor 10 is provided with an ABNLUT type rotary encoder 32 for detecting its rotational position, and this detection signal is transmitted via a cable 51. The signal is sent to a control unit (not shown), and the control unit moves the current sent via the cable 51 based on this detection signal to move the movable floor 4 up and down.

In this way, the movable floor 5 is mechanically moved via the rack 7 and the pinion 8 by the rotation of the electric motor 10, so the position of the movable floor 5 can be managed with high precision.

By making the drive box 5 into a sealed structure, the electric motor 10 and the rotation transmission device to each pinion 8 can be housed inside, and the pool 1 can be heated by the oil etc.
It is possible to reliably prevent internal contamination.

Further, by forming both the drive box 5 and the movable floor 4 into a hollow box-like sealed structure, the power of the electric motor 10 can be reduced by utilizing the buoyancy acting on them.

In this case, the buoyant force acting on the drive box 5 and the movable floor 4 is set to approximately 80% of the gravity, and a load of approximately 20% of the total weight acts on the electric motor 10.

Next, other embodiments shown in FIGS. 6, 7, and 8 will be described. Two drive boxes 57 and 58 are fixed to the bottom of the bit 53, and are attached to the side wall 53a of the bit 53. The four sprockets 66 are pivotally supported, while each drive box 57.58 is located below each sprocket 66.
A sprocket 67 is provided on the sprocket 6, and two sprockets 6
The chain 68 is rotated across the chain 6 and 67. The lower end of each support column 56 is locked between the pieces of each chain 68 via a connecting member 69, and the movable floor 54 is raised and lowered via each chain 68 by rotation of each sprocket 67.

On the side wall WS3a of the bit 3, four rails 62 are provided along each sprocket 66 and 67 and a chain 68, and four idle rollers 63 are provided that roll in contact with the pillars 56 of the movable floor 54, and are provided with movement is regulated.

The drive boxes 57 and 58 are box-shaped, and electric motors 64 and 65 are housed inside each drive box.

The rotational force of the electric motor 64 is transmitted to the two gears 7 via universal cylinders 73 and 74 to the reduction gear device 71.
) 77, 78, and further transmitted to the rotating wheel 9 of each sprocket 67 via each universal gear) 81, 82.
Transmit rotational force to 1. Similarly, the rotational force of the electric motor 65 is applied to each universal gear unit 7 by a reduction gear device 72.
5.76 to the two shafts 7) 79.80, and further transmits the rotational force to the rotary wheel 91 of each sprocket 67 via each of the 22 versatile wheels 83, 84.

Each electric motor 64, 65 is provided with an electromagnetic brake 85, 86, and the rotating wheel of each electric motor 64, 65 is provided with a rotary encoder 87, 8 for detecting its rotational position.
8 are provided respectively, and this detection signal is sent to a not-shown roll unit via a cable 89. Based on this detection signal, the control unit
The electric motor 64.65 and the electromagnetic brake 85.86 are driven by the electric current sent through the movable floor 54 to raise and lower it.

This embodiment also includes a mechanism for holding the movable floor 54 in a predetermined position, as shown in FIG.

(Effects of the Invention) As described above, according to the present invention, a movable floor that can be raised and lowered is provided in the pool, and a hollow sealed drive box is connected to the movable floor below the movable floor. An electric motor is housed inside, and a rotating wheel that extracts the rotational force of the electric motor is protruded from the outside of the drive box, and a transmission mechanism is installed on the pool floor to convert the rotation of this rotating wheel into the movement of raising and lowering the movable floor. Therefore, the position of the movable floor can be adjusted with high precision, and the water in the pool will not be contaminated, ensuring sufficient safety, workability, and durability, making it easy to put it into practical use. On the other hand, by utilizing the buoyancy of the hollow drive box, the movable floor can be raised and lowered with relatively little driving force.

[Brief explanation of drawings]

FIG. 1 is a longitudinal sectional view showing an embodiment of the present invention, FIG. 2 is a cross-sectional view, FIG. 3 is a perspective view of a main part, and FIGS. 4 and 5 are sectional views of a main part. FIG. 6 is a longitudinal cross-sectional view showing another embodiment, FIG. 7 is a cross-sectional view, and FIG. 8 is a perspective view of a main part. 1...pool, 2...pool floor, 3...bit,
4... Movable floor, 5... Drive box, 6... Electric motor, 7... Rack, 8... Pinion, 37,4
1,49...Patsukin, 38...Rotating wheel. Figure 8... Binion Figure 2 Figure 3 Figure 4 Figure 5 Figure 6 ^4 Figure 7 Figure 8

Claims (1)

[Claims] A movable floor that can be raised and lowered is provided in the pool, and a hollow sealed drive box is connected below the movable floor, and an electric motor is housed inside the drive box, and an electric motor is housed outside the drive box. A pool floor elevating device characterized in that a rotating ring for extracting the rotational force of the electric motor is protruded from the pool floor, and a transmission mechanism is provided on the pool floor for converting the rotation of the rotating ring into an elevating motion of a movable floor.