JPH06476U - Movable floor pool - Google Patents

Abstract

(57) [Summary] [Constitution] Short link chain 51 is attached to the movable floor 1a.
One end of the short link chain 51
Is wound around an upper sprocket 61, a lower sprocket 62, a drive sprocket 63, and the like. The motor 68 is provided with an encoder that detects the number of rotations. The lower sprocket 62 is supported via a load cell 71 that detects the load applied to it. 1 activated at the same time
The set drive mechanism 10a and the like include a control unit that simultaneously controls each chain drive unit 60. The control unit receives a signal from the encoder or the load cell 71, for example, and stops the motor 68 in a predetermined case. [Effect] In a movable floor pool, the safety can be improved, and the movable floor can be set at an arbitrary depth position to expand the applications.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a movable floor type pool having a vertically movable floor on the bottom of the pool and a plurality of drive mechanisms for vertically moving the movable floor on the side wall of the pool around the movable floor. In particular, it relates to the structure of the drive mechanism.

[0002]

[Prior art and its problems]

 A movable floor pool with a movable floor that can move up and down on the bottom of the pool and a plurality of drive mechanisms for moving the movable floor up and down on the side wall of the pool around the movable floor is publicly known ( For example, JP-B-52-8061, JP-A-52-97236, JP-B-63-58994). However, for example, in Japanese Examined Patent Publication No. Sho 63-58994, the movable floor is moved up and down by using a roller chain. However, since the strength of the roller chain is weak, the roller chain may be cut by the weight of the movable floor, which is a safety factor. I had a problem with. In addition, in the movable floor pool, it has long been desired to arbitrarily set the depth position of the movable floor in order to expand its application range.

[0003]

[The purpose of the device]

 An object of the present invention is to provide a movable-floor pool which is improved in various aspects such as high safety and the depth position of the movable floor can be arbitrarily set.

[0004]

[Means for achieving the purpose]

 The present invention relates to a movable floor pool having a movable floor vertically movable on the bottom surface of the pool and a plurality of drive mechanisms for vertically moving the movable floor on the side wall of the pool around the movable floor. One drive mechanism includes a short link chain, one end of which is connected to the edge of the movable floor, and a chain drive unit that is provided above the side wall of the pool and that drives the short link chain up and down. The drive unit detects the load on the lower sprocket, the upper sprocket, the lower sprocket, and the drive sprocket on which the short-link chain is wound in sequence, the motor that rotates the drive sprocket, the encoder that detects the number of rotations of the motor, and the motor And a load cell that operates simultaneously, and a set of drive mechanisms that are operated simultaneously is equipped with a control unit that controls each chain drive unit at the same time. The control unit operates the motor or operates the motor brake to stop the motor.It controls the forward / reverse rotation switching, the rotation speed, and the signal from the encoder. The motor is controlled so as to stop when the movable floor is at the desired depth position, and the motor is stopped when the load applied to the lower sprocket is smaller than the predetermined value based on the signal from the load cell. The feature is that it is designed to do.

[0005]

[Action]

 Short link chains are more resistant to twisting than roller chains, for example, and are therefore difficult to break. Therefore, the safety is high. In the unlikely event that all the motors of one set of drive mechanisms that are operated at the same time are stopped by the control of the control unit based on the load cell, the accident is prevented from spreading and safety is improved. Will be higher. The control unit detects the depth position of the movable floor based on the signal from the encoder.When it is at the desired depth position, the motor brake is activated by the control unit and the vertical movement of the movable floor is stopped to move the movable floor. The floor is maintained in that position.

[0006]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a plan view showing the entire movable floor pool according to the present invention. Here, the movable floor 1 is divided into three substantially equal areas (1a, 1b, 1c), and there are two drive mechanisms (10a, 10b) on the left and right sides of each movable floor 1a, 1b, 1c. They are installed individually. The drive mechanisms 10a and 10b have a bilaterally symmetrical structure. The movable floors 1a, 1b, 1c can be individually moved up and down, but here, the boundary portions are connected with a removable connecting tool (not shown) so that they can be moved up and down at the same time.

FIG. 2 is a sectional view taken along line II-II of FIG. The drive mechanism 10a includes a short link chain 51 and a chain drive unit 60. One end of the short link chain 51 is connected to the edge of the movable floor 1a. The chain drive unit 60 is provided above the side wall 5a of the pool 5. 75 is a box of a predetermined size in which the other end of the short link chain 51 is stored. In FIG. 1, reference numeral 70 denotes a control unit for controlling the chain drive unit 60. One control unit 70 is provided for each movable floor 1a, 1b, 1c so as to simultaneously control the chain drive unit 60 of the drive mechanisms 10a, 10b. It has been done. As the control unit, one unit for controlling the chain drive unit 60 of all the movable floors 1a, 1b, 1c may be provided.

FIG. 3 is an enlarged vertical sectional view showing the chain drive unit 60, and FIG. 4 is a partial sectional view taken along the line IV of FIG. Note that FIG. 3 shows a state in which the movable floor 1a is raised to the uppermost part. The short link chain 51 connected to the movable floor 1a is wound around the upper sprocket 61, the lower sprocket 62, the drive sprocket 63, and the idlers 64 and 65 in this order, and the rest is the lower part. It is stored in the box 75 (Fig. 2). The upper sprocket 61 is fixed to the edge of the upper surface of the pool side wall 5a while being covered with the cover 61a. A part 161a of the cover 61a extends downward in the pool 5 to cover the short link chain 51. Reference numerals 66 and 67 are support plates fixed to the wall surface of the pool 5. The lower sprocket 62 is attached to the lower support plate 67 via the load cell 71, and is pulled upward against the load cell 71 by the short link chain 51 that is wound around. That is, the load cell 71 is always loaded with a load larger than a predetermined size, and when the load cell 71 has a load smaller than the predetermined size due to breakage of the short link chain 51 or the like, the control unit is controlled. A signal is sent to 70 for stopping the operation of the motor 68. The drive sprocket 63 is fixed to a rotary shaft of a motor 68 fixed to an upper support plate 66, and rotates with the rotation of the motor 68. The idler 64 is rotatably fixed to the support plate 66 above the support plate 66, and the idler 65 is rotatably fixed to the support plate 66 below the support plate 66.

The control unit 70 switches between forward and reverse rotation of the motor 68 by the electric current supplied to the motor 68, and also controls the motor 68 so as to stop the rotation of the motor 68. ing. An encoder (not shown) is attached to the rotary shaft of the motor 68. The encoder detects the number of rotations of the rotation shaft of the motor 68. The control unit 70 recognizes the depth position of the movable floor 1a based on the signal from the encoder, and activates the brake when the movable floor 1a is at a desired position. The brake works by shutting off the current to it. Further, the motor 68 is designed so that the rotation speed changes when the frequency of the supplied current changes, and the control unit 70 also controls the change in this frequency. The maximum number of rotations of the motor 68 is set so that the movable floor 1a can be raised in an emergency at a speed of about 10 m / min.

Next, the operation of the movable floor 1a will be described. When the control unit 70 sends a current for normal rotation to the motor 68 of each chain drive unit 60, the motor 68 rotates in the direction of arrow A, the short link chain 51 is pulled up, and therefore the movable floor 1a rises. . When the movable floor 1a reaches a desired depth position, the control unit 70 cuts off the current sent to the motor 68. As a result, the brake of the motor 68 is operated, the rotation of the motor 68 is surely stopped, and the movable floor 1a is stopped and maintained at the desired depth position. When lowering the movable floor 1a, a current for causing the motor 68 of each chain drive unit 60 to rotate in reverse may be sent by the control unit 70. If the frequency of the current supplied to the motor 68 is changed, the rotation speed of the motor 68 changes and the ascending / descending speed of the movable floor 1a changes.

In the above operation, the control unit 70 detects that the movable floor 1a has reached the desired depth position based on a signal from an encoder that detects the rotation speed of the motor 68. That is, the control unit 70 can calculate the depth position of the movable floor 1a from the rotation speed of the motor 68.

The short link chain 51 is more resistant to twisting than a roller chain, for example, and is therefore difficult to break. Therefore, the movable floor 1a is moved in the vertical direction with high safety. Moreover, since the movable floor 1a is suspended by the four short link chains 51, it is stable in a horizontal state. Further, since the short link chain 51 is difficult to cut, there is no possibility that a plurality of pieces will be cut at one time. Even if one piece is cut, the remaining three pieces make the movable floor 1a sufficiently stable. Maintained.

When the short link chain 51 is broken during the operation or stop, the lower sprocket 62 is lowered and the load applied to the load cell 71 becomes extremely small. This change is transmitted to the control unit 70, and the electric current sent to the motor 68 is cut off by the control unit 70. Therefore, the operation of all the drive mechanisms 10a, 10b of the movable floor 1a is stopped, and the accident is prevented from spreading.

[0014]

[Effect of device]

 As described above, according to the present invention, since the short link chain 51 that is strong against twisting is used, the safety can be improved. Moreover, even in the event of any damage, the operation of all the motors 68 of the drive mechanisms 10a, 10b for each movable floor 1a, 1b, 1c can be stopped by the control of the control unit 70 based on the load cell 71. Therefore, accidental expansion can be prevented and safety can be further improved.

Further, based on a signal from the encoder, the control unit 70 detects the depth position of the movable floor, and when it is at the desired depth position, the control unit 70 activates the brake of the motor 68, Since the vertical movement of the movable floor is stopped and the movable floor can be maintained at that position, the movable floor can be set at an arbitrary depth position. Therefore, the depth can be set according to the age and skill of the swimmer, and the pool application can be expanded.

[Brief description of drawings]

FIG. 1 is a plan view showing the entire movable floor pool of the present invention.

FIG. 2 is a sectional view taken along line II-II of FIG.

FIG. 3 is an enlarged vertical sectional view showing a chain drive unit.

FIG. 4 is a partial cross-sectional view taken along the line IV of FIG.

[Explanation of symbols]

 1 (1a, 1b, 1c) Movable floor 5a Side wall (of pool) 10a, 10b Drive mechanism 51 Short link chain 60 Chain drive unit 61 Upper sprocket 62 Lower sprocket 63 Drive sprocket 68 Motor 70 Control unit 71 Load cell

Claims (1)

[Scope of utility model registration request] 1. A movable floor pool having a movable floor movable up and down on a bottom surface of the pool, and a plurality of drive mechanisms for vertically moving the movable floor on a side wall of a periphery of the movable floor. The individual drive mechanism includes a short link chain having one end connected to the edge of the movable floor, and a chain drive unit that is provided above the pool side wall and drives the short link chain up and down. , An upper sprocket, a lower sprocket, and a drive sprocket on which a short link chain is sequentially wound, a motor for rotating the drive sprocket, an encoder for detecting the number of rotations of the motor, and a load cell for detecting the load applied to the lower sprocket. One set of driving mechanism that has and is operated at the same time is equipped with a control unit that controls each chain driving unit at the same time. The control unit operates the motor or operates the brake of the motor to stop the motor, controls the switching of the forward and reverse rotations and the rotation speed, and also based on the signal from the encoder. The motor is controlled to stop when the movable floor is at the desired depth position, and the motor is controlled to stop when the load applied to the lower sprocket is smaller than a predetermined value based on the signal from the load cell. A movable floor pool that is characterized by