JPS60195273A - Safety apparatus in three-dimensional parking apparatus - 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] The present invention provides a safety device that controls the upper and lower vehicle support platforms from descending and traversing when a person is present near the lower vehicle support platform in a multi-level parking system. Regarding.

Conventionally, as the above-mentioned safety device, a large number of mud switches 4 are arranged on both sides of the lower vehicle support base 20 as shown in FIG. In response to this, there was a system that stopped the lower vehicle support platform from moving horizontally and also prevented the upper vehicle support platform from lowering even if the upper vehicle support platform was operated to lower the vehicle support platform.

However, in such a safety device, each mud switch 4
There is a frame around the , and this part is a dead zone. Furthermore, the gaps between these mud switches also serve as dead zones. Therefore, if a large number of mud switches 4 are arranged as shown in FIG. 1, there will be a large number of dead zones as shown by the notches in FIG. There was also. Also,
The minimum operating load of the mud switch 4 is approximately 9 in 10 ('), and even if an infant weighing less than this is placed on the mud switch 4, it will not be detected and safety cannot be fully ensured. there were.

This invention solves each of the above-mentioned problems and aims to ensure sufficient safety.

Therefore, the present invention provides a plurality of heat ray switches that detect when a person enters a detection area forming a predetermined area, so that the detection area is located at the periphery of the lower parking area of the multi-level parking system. When at least one of these hot wire switches detects a human being, the lower vehicle support platform stops moving? lil] control section.

With this configuration, the hot wire switch detects objects based on the far infrared rays emitted by objects that enter the detection area, so even if a light infant enters the detection fO area, the hot wire switch can reliably detect the object. Can be detected. Therefore, safety can be sufficiently ensured. Further, since the hot wire switch does not have a dead zone around the detection area, if several hot wire switches are arranged so that the detection area is the peripheral edge of the lower parking area, there will be no dead zone at all. Therefore, safety can be sufficiently ensured.

As another technical means for achieving the technical object of the present invention, it is possible to use, for example, an ultrasonic switch or a phototube switch instead of a hot wire switch. but,
Ultrasonic switches and phototube switches detect vehicles as well as humans, and are prone to malfunction. However, since hot wire switches detect far infrared rays emitted by objects,
It can distinguish between humans who emit far-infrared rays and vehicles that do not, and will not malfunction. Furthermore, since the phototube switch only detects objects on the line connecting the light emitting element and the light receiving element, a large number of phototube switches are required to ensure safety.

However, since the hot wire switch detects a person entering a detection area formed in a predetermined area, a large number of hot wire switches are not required.

This will be explained in detail based on an example. A first embodiment is shown in FIGS. 2 and 3.

This example was implemented in a two-tier multilevel parking system as shown in Fig. 2, where 1O11O... are upper vehicle support stands, and 11, 12... are lower vehicle support stands. . The upper vehicle support stand 10.10... has a motor (
The lower vehicle support stands 12, 12, . . . are moved laterally by a motor (not shown).

Wiring pipes 14, 14, . . . are arranged along the longitudinal edges of the upper vehicle support stands 10, 10, . Each of these wiring pipes 14, 14... has a detection unit 1 of a hot wire switch 16, 16... at a predetermined interval.
8.18... are arranged.

These detection units 18, 18, . . . each have a rectangular detection area 20, 20, . Each of these detections @ area 20
．． 20... each detection area 20 so that there is no gap between them.
．． 20... The ends in the longitudinal direction are overlapped with each other. Furthermore, each other in the center I! The two detection areas that are in contact with each other are also overlapped at the edges in the width direction.

As shown in FIG. 3, each hot wire switch 16, 16... has amplifying sections 22, 22, 18, .
..., power supply section 24.24... and normally open contact 26.26
The detection unit 18.1 detects far infrared rays emitted by objects within the detection area 20.20... with a lens (not shown).
The light is focused on the infrared sensor in the detection area 20. ,
20...When a person enters, the detection area 2'0, 2
There is a difference in strength between the far infrared rays emitted by humans and the far infrared rays emitted by humans, and this difference is amplified by the amplification section 22.
・ is amplified and the normally open contacts 26, 26, etc. are closed.

Normally open contact 26.26 of each hot wire switch 16.16...
... are connected in parallel with each other, and this parallel circuit is connected to the power supply circuit in series with the emergency stop relay 28.

Connected in series to this power supply circuit are a motor control relay 30, a normally open relay contact 32 that is driven on the second day of the emergency stop relay, a power switch 34, a normally open emergency stop switch 36, and a key switch 38. Furthermore, power switch 3
4 is connected in parallel with a normally open relay contact 40 that is driven by the motor control relay 3°.

The motor control relay 30 drives, in addition to the normally open relay contact 40, a normally open relay contact (not shown) provided in the energizing circuit for the motor that traverses the lower vehicle support platform 12, and A normally open relay contact (not shown) provided in a current supply circuit to a motor that raises and lowers the vehicle support stand 10 is driven.

In the safety device configured as described above, when the power switch 34 and the key switch 38 are closed, the motor control relay 30 is energized, the relay contact 40 is closed, and the motor control relay 30 is self-held. At the same time, the motor control relay 30 closes the normally open relay contact provided in the energizing circuit for the motor that moves the lower vehicle support platform 12 horizontally, and closes the normally open relay contact provided in the energization circuit for the motor that moves the upper vehicle support platform 10 up and down. Close the normally open relay contact provided. This allows each motor to move up and down. Then, when a switch (not shown) corresponding to a predetermined upper vehicle support platform 10 to be lowered is closed, the predetermined lower vehicle support platform 12 moves horizontally, and after the horizontal movement is completed, the vehicle support platform 12 of the predetermined upper stage moves downward. Platform 10 descends.

At this time, when any of the hot wire switches 16, 16... detects a person and closes any of the normally open contacts 26, 26..., the emergency stop relay 28 is energized with a force of 1. , relay contact 32 is opened. As a result, the power supply to the motor control relay 30 is stopped, so the normally open relay contacts provided in the energization circuit to the traversing motor of the lower vehicle support stand 12 and the lifting motor of the upper vehicle support stand 10 are opened. It will be done. Therefore, the power supply to each motor is stopped, the first stage vehicle support stand 12 cannot move sideways, and the upper stage vehicle support stand 10 cannot go up or down, thus ensuring safety.

FIG. 4 shows a second embodiment. In this embodiment, the detection units 18a, 18a... of the Fl switches 16, 16...
The structure is the same as that of the first embodiment except that the mounting position is different. Equivalent parts are given the same reference numerals and their explanation will be omitted.

In this embodiment, the detection parts 18a... are installed between the upper vehicle support stands 10, 10... and at both ends, the rear part is installed on a building such as a wall, the front part is installed on a support, etc. On both sides of the lower vehicle support stand 12, elongated detection areas 20a, 20a, . . . are provided along its length. Detection units 18a'1 18 facing each other
The detection areas 20a and 20a of a completely overlap. Still, the center two of each detection area 20a, 20a
The two partially overlap in the width direction. This embodiment also operates in the same manner as the first embodiment.

In the above embodiment, the hot wire switches 16, 16... have normally open contacts 26, but if the relay contacts 32 are opened when the emergency stop relay 28 is de-energized, Each hot wire switch 16 can have a normally open contact. However, in that case, each normally closed contact must be connected in series.

[Brief explanation of the drawing]

FIG. 1 is a plan view showing the arrangement of a mud switch used as a safety device in a conventional multi-level parking system, and FIG. 2 is a plan view showing the arrangement of a hot wire switch used in a first embodiment of the safety device in a multi-story parking system according to the present invention. A perspective view, FIG. 3 is a circuit diagram of the first embodiment, and FIG. 4 is a perspective view showing the arrangement of a hot wire switch used in the second embodiment. 16...Hot wire switch, 28.30.32...Control unit. Patent applicant: Japan Air Brake Co., Ltd. Agent
Tetsu Shimizu and 2 others

Claims (1)

[Claims] +l) A plurality of heat ray switches that detect when a person enters a detection area having a certain area are arranged so that the detection area is the periphery of the lower parking area of the multi-level parking system, and these heat ray switches A safety device in a multi-story parking system, comprising a control section that stops the lateral movement of a lower vehicle support platform in response to detection of a human by at least one of the switches.