JP2768381B2 - Cage position control device for multi-story parking device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elevator-type multi-story parking device that controls a position such as deceleration and stop of a cage.

[Conventional technology]

Conventionally, position control of a cage in an elevator type multi-story parking device is controlled by detecting the deceleration and stop positions of the cage on each floor with a limit switch, a rack and pinion is provided on a lifting line, and a pulse transmission provided on a pinion. There is a method in which control is performed by detecting a cage position with a container, and a method in which precise position setting is not required using a comb-shaped cage, and deceleration and stop positions are controlled within a relatively wide allowable range.

[Problems to be solved by the invention]

However, in order to determine the deceleration position and the stop position by the limit switch, a limit switch must be provided for each floor and the positions of these limit switches must be adjusted in a trial run of the actual machine on site. Therefore, when the elevator type multi-story parking device is raised in height, the number of limit switches increases, and it takes an enormous amount of time to adjust the position of the limit switches in the trial operation adjustment. In addition, since a limit switch is provided for each floor, wiring work is increased, cost is increased, and dangerous work at high places is also increased.

Devices that detect the position using a rack-and-pinion pulse transmitter do not need to be installed on each floor like limit switches, but are not suitable for high-speed ascent and descent, and the building structure of the parking system is the same as that of each elevator machine. Since it is necessary to have a very high accuracy, it can be used only for a low speed and a short ascending and descending distance.

In the comb-teeth method, the tire supporting part of the cage on which the vehicle is mounted is made comb-shaped. When the car is moved down to the pallet when the comb teeth of the cage pass through the comb teeth of the pallet, the cage moves up and down an extra distance.
It is necessary to enlarge the building structure. In addition, each pallet must be provided with a motor for moving in and out and a limit switch for stopping. For example, in the case of a parking device accommodating 30 vehicles, 30 motors are required, and 60 limit switches are required since each pallet is provided with a limit switch for stopping left and right ends. Therefore, the equipment cost increases,
Adjusting the position of the limit switch during test operation is also troublesome.

The present invention solves the above-mentioned problem in a cage position control device of an elevator-type multi-story parking device, which eliminates the need for a large number of limit switches and their wiring, reduces the cost of equipment, and hassle-free adjustment of limit switches during trial operation It is an object of the present invention to provide a cage position control device of a multi-story parking device, which can reduce a test operation time by eliminating the need for a multi-story parking device, and which can increase the height and speed of the multi-story parking device.

[Means for solving the problem]

According to the present invention, in an elevator-type multi-story parking device, detecting means for detecting a rotation amount of a main rope drive shaft of a hoist, and calculating means for calculating a current position of a cage based on output data of the detecting means, Setting means for setting the target position of the cage in advance, and control means for controlling the hoist based on the data of the target position set by the setting means and the current position calculated by the calculating means, the gauge position The control device is configured to solve the above-mentioned problem.

Further, by providing an elongation detecting means for detecting the amount of elastic elongation of the main rope due to the weight of the mounted vehicle, the accuracy of cage position control of the multi-story parking device can be improved.

[Action]

When the vehicle is stored in the multi-story parking device, the vehicle enters the cage from the entrance and the storage location is designated by the operation panel, the hoist is started, and the detecting means detects the rotation amount of the main rope drive shaft. Since the amount of rotation of the main rope drive shaft corresponds to the hoisting length of the main rope, that is, the elevating distance of the cage, the calculating means calculates the current position of the cage based on the output data of the detecting means. Since the target position such as the deceleration start, end position, and stop position for each floor is set in advance by the setting means, the control means is controlled based on the target position selected by specifying the storage location and the calculated current position data. Outputs a control signal such as deceleration and stop to control the hoist and stop the cage on the storage floor. When the vehicle is stored in the storage area, the cage returns to the entrance. In the case of leaving the warehouse, the position control is similarly performed.

The main rope is elastically stretched by the weight of the vehicle mounted on the cage. If the multi-story parking device is raised, the position error due to this elongation may increase, so if necessary,
An elongation detecting means is provided to detect the amount of elongation, and a correction operation is performed when the current position is calculated by the calculating means.

〔Example〕

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing a configuration of a position control device of a multi-story parking device according to one embodiment of the present invention. This device is
A pulse transmitter 1 for detecting the amount of rotation of the main rope drive shaft, pulse transmitters 2 and 3 for detecting the elastic extension of the chain, a pulse counter 4, a CPU 5, a control device 6, a program loader 7, a setting switch 8, An upper unit 9, a switch 10 for manual operation, and an operation panel 11 are provided.

FIG. 2 is a front view of an elevator-type multistory parking device provided with the position control device.

This multi-story parking device has an elevator 20
21, a storage space 23 of a plurality of floors for accommodating a vehicle 22 is provided on the left and right sides thereof. The top floor is a machine room 24 of the elevator 20, and the lowest floor is an entrance 25 of the vehicle 22. The elevator 20 has a cage 26 on which the vehicle 22 is mounted, and a chain which is a main rope of the cage 26.
27, and a sprocket 28 for hanging the chain 27, a main rope drive shaft
29, a transmission 30, and a hoisting machine 9 including a drive motor (not shown).

At one end of the main rope drive shaft 29 of the hoisting machine 9, a pulse transmitter 1 for detecting the rotation amount of the main rope drive shaft 29 is provided.

Pulse transmitters 2 and 3 equipped with detection rods 32 are installed at the front and rear in the pit 31 provided below the cage 26, and when the vehicle enters the cage, the cage 26 moves from the reference floor GL at the entrance. When the detection rod 32 is displaced downward, the detection rod 32 is pushed down, and the pulse transmitters 2 and 3 connected to the detection rod 32 are operated, and the chain 2
Detect the elastic elongation of 7.

In this embodiment, the setting of the target position of the cage can be performed manually and programmatically. For manual configuration,
First, the cage 26 is aligned with the reference floor GL of the entrance 25, the pulse counter 4 is reset by the setting switch 8, and the pulse count value is set to "0". Next, the manual operation switch 10 is operated to drive the hoisting machine 9 to raise the cage 26 and stop it on the first floor. During this time, since the pulse transmitted from the pulse transmitter 1 by the rotation of the main rope drive shaft 29 is counted by the pulse counter 4, when the cage 26 stops on the first floor,
The setting switch 8 is operated to read the pulse count value at that time from the pulse counter 4 to the CPU 5. Thereafter, the same procedure is sequentially repeated for the second and third floors to set target values.

When performing the program setting, a program for obtaining a pulse count value corresponding to the floor height of the storage location 23 is created based on the relationship between the rotation speed of the main cable drive shaft 29 and the winding length of the chain 27, and a program loader is prepared. Read from 7 to CPU5.

As the deceleration position, data on a required deceleration distance for various operation patterns is input from the program loader 7 to the CPU 5.

When storing the vehicle 22, the vehicle 22 enters the cage 26 from the entrance 25 and the storage location 23 is designated on the operation panel 11.
The control device 6 receives the designation signal of the operation panel 11 and the hoist 9
To raise the cage 26. At this time, the pulses received by the pulse transmitter 1 due to the rotation of the main rope drive shaft 29 are counted by the pulse counter 4, and the CPU 5 calculates the current position of the cage 26 based on the output data. The CPU 5 compares the target position data selected by designating the storage location 23 from the preset target position data with the calculated data of the current position, and the CPU 5 issues a control command signal to the control device 6.
The control device 6 performs control such as deceleration and stop of the hoisting machine 9 according to the control command signal, and stops the cage 26 at the designated storage floor. When the vehicle 22 is stored in the designated storage location 23 from the cage 26, the cage 26 returns to the entrance 25.

 In the case of leaving the warehouse, the position control is similarly performed.

If the multi-story parking device is raised and the chain 27 becomes longer, the chain 27 will expand more due to the weight of the vehicle 22 mounted on the cage 26, causing a positional error and causing
Transfer of the vehicle 22 to 23 becomes difficult. In this embodiment, when the vehicle 22 enters the cage 26 from the entrance 25, the chain 27
When the cage 26 is lowered due to the extension of the pulse, the pulse transmitters 2 and 3 emit pulses, and the pulses are counted by the pulse counter 4. Based on the output data, the CPU 5 determines the amount of extension and the necessary correction value. The current position is corrected and calculated.

〔The invention's effect〕

Since the present invention is configured as described above, limit switches and wiring for each floor are not required, the equipment cost is low, the time for adjusting the limit switches during test operation can be greatly reduced, and maintenance is also facilitated. . In addition, since the detection means is on the fixed side, wiring is easy, accidents due to disconnection are unlikely to occur, and reliability is high. There is an effect that the setting of the stop position can be easily changed.

[Brief description of the drawings]

FIG. 1 is a block diagram showing the configuration of an embodiment of the present invention, and FIG. 2 is a front view of an elevator-type multi-story parking device. In the figure, 1, 2, and 3 are pulse generators, 4 is a pulse counter, and 5 is C
PU, 6 is a control device, 7 is a program loader, 8 is a setting switch, 9 is a hoist, 10 is a switch for manual operation, 11 is an operation panel, 20 is an elevator, 22 is a vehicle, 23 is a storage location, 25 Is a doorway, 26 is a cage, 27 is a chain, and 29 is a main rope drive shaft.

Claims (2)

(57) [Claims] In a multi-story parking device of an elevator system,
Detecting means for detecting the amount of rotation of the main rope drive shaft of the hoist; calculating means for calculating the current position of the cage based on output data of the detecting means; setting means for presetting the target position of the cage; Control means for controlling the hoist based on the data of the target position set by the setting means and the current position calculated by the calculating means; 2. The cage position control device for a multi-story parking device according to claim 1, further comprising an extension detecting means for detecting an amount of elastic extension of the main rope due to a weight of the mounted vehicle.