JP2827067B2 - Chain detection device for lifting device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elevating device in which an article is mounted on an elevating lift and moves up and down via an elevating chain. The present invention relates to a detection device.

[0002]

2. Description of the Related Art Conventionally, a detecting device of a lifting device provided with a lifting lift that moves up and down via a chain has four corners of a lifting member fixed and biased by a spring to a chain suspended from a lifting drive unit. An actuator was provided, and a limit switch was provided on the actuator to serve as a detection device. For example, there is an invention disclosed in JP-A-62-264199.
It is certainly effective in detecting when the chain has become loose or when one of the two has been stretched. However, if a part of the lifting lift causes contact during lifting, even if a heavy load is applied to the chain at one end, it cannot be detected that the chain is in tension, and the lifting lift in the lifting space in the lifting space is not detected. This has the disadvantage that the degree of damage is impaired, leading to an accident that damages the mounted product, and it is difficult to adjust the pressing force of the actuator, and the detection device is expensive. Also, the left and right lifts
Pulleys are rotatably mounted on the upper and lower parts of the elevating position.
Endless winding of wire around pulley
Fix a part to the lifting lift and adjust the rotation speed of the left and right pulleys.
There is a detection device to detect. In this detector, the lifting position
The wire is wound around the upper and lower pulleys of the
Higher layers have large errors due to wire stretching and sliding.
There is a disadvantage that it cannot be detected accurately, and the number of parts is large.
Apparatus for counting pulses has become expensive.

[0003]

According to the present invention, a stop command can be easily issued to the drive motor even if any abnormality such as looseness or tension of the chain occurs due to normal operation of the lift. Adjustment of the allowable limit of the level of the lifting lift according to the characteristics of the device is easy and easy for anyone to adjust by simply changing the size of the projections and notches, without relying on a computer program change by a specialist engineer. raised the issue for the purpose of a possible apparatus, its
To do this, attach the idle wheel to the top of the lift space
The chain that suspends the lifting lift to the idle wheel
Wrap around and raise and lower the lift to move up and down linearly.
Because it can be directly converted to the rotation of rufoil, quick and accurate detection is possible.
Provides an inexpensive detector that can be output and is safe, with a small number of parts
Is what you do.

[0004]

According to a first aspect of the present invention, there is provided an elevating device in which an elevating lift moves up and down.
Elevator space 8 is provided, and a plurality of storage rooms adjacent to elevator space 8 are provided.
Driving motor 1 on the upper floor of elevator space 8
2 lifts the lift 2 around the chain 5 wound around
A detection device 19 for detecting the horizontal position of the shaft 2
You. In the upper part of the lifting space 8, each eye is rotatably mounted.
And the idle wheels 16 are checked.
Wrap 5 around. The detection device 19 is cut off from the projection 23.
Disc 17 / Second Disc 1 with Notch 24
8 is provided, and the first disc 17 and the second disc 18
Turn on and off the current by turning the starting part 23 and the notch 24
It can be detected by replacement. The lifting device of the present invention
The chain detector is a chain that suspends the lifting lift horizontally.
5 is wound around the pair of idle wheels 16
1st disk 17 and 2nd disk 18 are linked, and each detection
The control panel 21 detects the phase difference of the device 19 and
It is configured to control the rotation of. In claim 2,
The controller 20 determines the detection signal of each detection device 19,
When there is an abnormality, the drive motor 12
A command is issued to stop the rotation of the motor.

[0005]

[Action] Since the present invention has the above configuration, claim
According to the invention of the first aspect, the chain has a function of converting a linear motion in the elevating space in which the elevating lift moves up and down into a rotating motion by the idle wheel . By this action , when the lifting member is hooked on the trolley or the article that has protruded from the storage chamber during the vertical movement, the chain on the hooked side of the four chains that lift the lifting member becomes tensioned. while idle wheel being wound around becomes a state which can not be rotated, the idle wheel of the other three positions a rotating detects a disc provided in each idle wheel, a drive motor
There is an action that can be controlled. Moreover, this detector
Is the ON / OFF setting of the protrusion and notch of the disk
It is detected by the phase difference at which the current is switched.
Since the phase is synchronized and the phase shifts when abnormal,
It can be easily identified by the controller of the power supply. Furthermore, going up and down
The chain with the lift suspended rotates above the lift space.
It can be a configuration that is wrapped around an idle wheel that is attached to the shaft
This has the effect of prompt detection.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows a parking tower 1, which can be stored above and below the ground. The parked car is at the landing 1 on the ground surface GL
Ride 0. The landing 10 forms a safe passage without a gap integrated with a comb-shaped lift floor 2 and a movable floor F having comb teeth so as to close the gap between the comb teeth of the lift 2. . The section adjacent to the landing 10 can be used as a passage for people or a waiting room S.

[0007] The storage on the ground floor is specified by the operation panel 22, and the lift 2 is raised by supporting the automobile tire with a comb-shaped member and winding the chain 5 by the lift drive unit 11. When stopped slightly above the designated floor, the traversing tray 7 moves from the storage room 9 to the elevating space 8, and the elevating lift 2 starts to descend, and the comb teeth of the traversing tray 7 formed in a symmetrical direction to the comb teeth of the elevating lift 2. The traversing tray 7 returns to the storage room 9 and the lifting / lowering lift 2 also returns to the position of the landing 10 and is completed.

[0008] In the storage on the basement floor, the lift 2 equipped with a car is slightly elevated above the ground surface GL by the above-described operation, and the movable floor F forming the passage is stored under the floor on the left side of FIG. When the lifting space 8 is opened, the lifting lift 2 descends and is stored in the traversing tray on the designated floor as described above, and the lifting lift 2 ascends to the entry hall 10 and moves together with the moving floor F returning to the lifting space 8. A passage is formed and the process is completed.

The elevation drive unit 11 of the parking tower 1 will be described with reference to FIG. The lifting / lowering lift 2 has hanging portions 4 fixed at front and rear ends, and guide rollers 6 are pivotally mounted on upper and lower ends of the hanging portions 4, and is vertically guided by the guide rails 3 in a horizontal direction.
The chain 5 is fixed at one end to the suspension unit 4, is wound around an idle wheel 16 which is mounted on the upper end of the guide rail 3, is wound around a driving sprocket 15, and the other end is fixed to the weight 13, 4 are suspended horizontally.

The drive sprocket 15 is fitted on the counter shaft 14 and is rotated by the drive of the drive motor 12 to move the lift 2 up and down. Idle wheel 1
Reference numerals 6 denote sprockets provided at the upper end portions of four guide rails 3 freely mounted at positions for vertically moving the lift 2 vertically along the guide rails 3. The first disk 17 and the second disk 18 having two sets are interlocked with the four idle wheels 16, and may be directly fixed to the idle wheel 16. Indirectly using the first and second disks 17
· 18 may be rotatably mounted on the shaft.

The first and second disks 17 and 18 may be thin disks made of metal, but are provided with protrusions 23 or cutouts 24 on the outer periphery thereof.
4 is provided with a detecting device 19. In the present embodiment, the detection device 19 will be described using a proximity switch.
FIG. 3A shows the shape of the detecting device 19 and the projecting portion 23 for detecting the projecting portion 23 of the first disk 17. The shape of the projecting portion 23 is determined by the diameter of the first disk 17 or the rotation ratio interlocked with the idle wheel 16. The size has changed.

FIG. 3 (b) shows the shape of the second disk 18, which is provided with a notch 24 which is smaller than the projection 23 of the first disk 17, and as shown in FIGS. 3 (d) and 3 (e).
3 represents waveforms 1A and 1B, and cut portion 24 represents waveforms 2A and 2B.
It is displayed as. The waveform of the time chart of the first disk 17 is shown in FIG. 3C, and the waveform 1A of the detecting device 19 to be detected has a larger width than that of the second disk 18 and is shown in FIG. This waveform is idle wheel 1
The rotation state of the chain 6 and the hanging state of the chain 5 are also shown. If an abnormality occurs in the chain 5, the rotation of the idle wheel 16 fluctuates, and the projection 23 or the notch 24 also fluctuates, so waveform 1A
Since the cycles of 2B, 2A, and 2B are different, FIG.
-It becomes like (e).

Next, the operation of actually detecting an abnormality of the chain 5 of the lifting device will be described. FIG. 4 is a connection diagram of the detection device 19 provided on the first disk 17 and the detection device 19 provided on the second disk 18. When the protrusions 23 of the first and second disks 17 and 18 are detected, the switches SW1 and SW2 are turned off.
The state is set to the F state, and when the notch 24 is detected, the switches SW1 and SW2 are turned on. FIG. 3 (C) shows the first and second disks 17.1.
8 is a time chart of FIG. 8, and the detecting device 19 which has detected the cut portion 24 of the first disk 17 turns on the switch SW1 and sends a signal to the switch SW2 as shown in FIG. Since the switch SW2 is in the OFF state as shown in FIG. 3E in the area of the projection 23, no signal can be sent to the control panel 21.

However, in the abnormal state shown in the second half of FIG. 3C, the cut portion 24 of the second disk 18 enters the area of the cut portion 24 of the first disk 17 and the switch SW1
To the ON state and the switch SW2 to the ON state,
The signal circuit is connected to the control panel 21 to pass a signal, and the drive motor 12 is stopped at the stop point T. Further, the detection device 19 in which the controller 20 is interposed in the front circuit of the control panel 21 includes the first disk 17 and the second disk 18.
Is input to the controller 20 as a set, the controller 20 checks the positions of the waveforms 1A and 2B, determines whether the waveform is normal or abnormal, and when the waveform 2B deviates from the waveform 1A,
A signal may be transmitted from the controller 20 to the control panel 21 so that the control panel 21 transmits a stop command to the drive motor 12. FIG. 4 shows the controller 20 and a DC power supply.
Built-in source. DC current flows through controller 20
Then, the control panel 21 operates to stop the drive motor 12.
Command. The detecting device 19 includes the first and second disks 1
ON by detecting protrusions 23 and cuts 24 of 7.18
・ Repeat OFF. The current of the controller 20 is detected
Negative electrode is energized to the device 19, ON / OFF
Is normally in the disconnected state due to the switch action of
Detects when the phases of the disk 17 and the second disk 18 deviate
When the ON / ON state of the device 19 occurs, the negative electrode
Is energized, a current flows through the control panel 21 and the drive motor 12
Signals to stop.

In FIG. 2, the first disk 17 and the second disk 18 are one pair on the left and right, but they may be one pair on the front and rear. Further, an example in which the protrusion 23 and the cut 24 are detected has been described, but a combination of the protrusion 23 or the cut 24 may be used. For example, as shown in FIG. 5A, the waveform 1A is synchronized with the waveform 2B. If the synchronization is lost, an abnormal signal is generated and the operation is stopped at the stop point T. Further, if a method is used in which a timer is provided in the waveform so that an abnormality occurrence signal is output if the next waveform 1B is not displayed within the time set in the waveform 2B, the operation becomes more secure. Further, it may be configured as shown in FIG. 5B that becomes abnormal when the waveforms 1A and 1B are shifted with the same width of the projection 23.

[0016]

According to the first aspect of the present invention, the lifting lift is suspended.
Since the detection device is directly connected to the lowered chain,
Being able to respond quickly and reliably,
Simple switch machine with few failures due to fewer parts
It has the effect of making the device inexpensive due to its structure. Claim 2
According to the invention, when the detection device detects an abnormality, the drive motor
Since rotation is stopped, there is no accident
You.

Further, even if the allowable range for detecting the horizontal position of the lift 2 is not converted by the software of the control panel 21,
The protrusion 23 and the cutout 24 of the two disks 17.18;
Thereby, an excellent effect that can be easily adjusted by hardware can be obtained.

[Brief description of the drawings]

FIG. 1 is a vertical sectional view of a multistory parking tower employing the present invention.

FIG. 2 is a perspective view of a lifting drive unit.

FIGS. 3A and 3B show the shape of a disk.
(C) is a time chart of the disk rotation operation of the detection surface of the detection device. (D) is an output time chart of the first disk detecting device. (E) is an output time chart of the second disk detecting device.

FIG. 4 is a wiring diagram for explaining a detection device.

FIG. 5 (a) is a waveform when the detection position is changed while the protrusions of the disk are the same. (B) A waveform in which the protrusions of the disk are the same and synchronized at the protrusions.

[Explanation of symbols]

 2 Elevating Lift 3 Guide Rail 5 Chain 8 Elevating Space 9 Storage Room 11 Elevating Drive Unit 12 Drive Motor 16 Idle Wheel 17 First Disk 18 Second Disk 19 Detecting Device 20 Controller 23 Protrusion 24 Notch 1A First Waveform 2A First Waveform 1B 2nd waveform 2B 2nd waveform T Stop point

Claims (2)

(57) [Claims] An elevating space in which an elevating lift (2) moves up and down.
(8), multiple storage rooms adjacent to the lifting space (8)
Standing over the floor, the drive mode above the lift space (8)
Lift (2) on the chain (5) wound around the table (12)
For detecting the horizontal position of the lift (2)
In an elevating device equipped with a device (19), each idle wheel (16) around which a chain (5) is wrapped around and rotatably mounted on an upper portion of an elevating space (8), a projection (23 ) and a notch. The first disk (17) and the second disk (18) provided with the portion (24), and the projections (23) and the cut portions (24) of the first disk (17) and the second disk (18 ) are supplied with electric current. ON / OFF
Each detection device that detects switch to (19), lifting riff
Front of a pair of chains (5)
The first disk (17) is attached to each idle wheel (16).
The second disk (18) is linked, and each detecting device (19)
The control panel (21) detects the phase difference of the drive motor (12).
A chain detecting device for an elevating device, wherein the rotation detecting device controls the rotation of the chain. 2. The method according to claim 1, wherein the detection signal of each of the detection devices (19) is controlled
2. The chain detecting device according to claim 1, wherein when the abnormality is determined by the roller, a command to stop the rotation of the drive motor is transmitted through the control panel .