JPS63282072A - Floor re-conforming device for elevator - 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] This invention relates to an improvement in an elevator re-alignment device for re-aligning the elevator car when it stops outside the normal landing range. .

[Conventional technology]

Due to a failure of the landing control device or a change in its characteristics, the levels of the landing floor and the car floor may deviate when the car stops at the destination floor. Furthermore, even if the car has stopped within the normal landing range, if the inward orientation of the car changes significantly due to passengers getting on and off, the level may shift due to the length of the rope hanging the car. In such a case, the amount of deviation is large (which could cause danger such as stumbling when getting on or off the car, so it is necessary to move the car as quickly as possible to the landing floor. In other words, the car should be restarted automatically and the car floor should be moved to the landing floor). An operation of adjusting to the floor is performed. This is hereinafter referred to as a re-alignment operation.

Conventionally, as such a bed re-leveling device, one shown in, for example, Japanese Unexamined Patent Publication No. 127579/1983 has been proposed.

FIG. 5 shows a system structure diagram of a conventional bed rebalancing device. 1 is a cage, 2 is a counterweight, and between the cage 1 and the counterweight 2 is a sheave wound around a sheave 4. - are connected to both ends of the tube 3, respectively. Reference numeral 5 denotes an electric motor that drives the sheave 4 and is controlled by a speed control device 6. 7 is
A speed detector directly connected to the electric motor 5, whose output signal ■7
The reference signal (P) from the speed reference signal generator 8 for re-floor alignment is input to the subtracter 9, which outputs the deviation (2). is input to the speed control device 6.

Reference numerals 10a to 10c are position detectors installed in the car I, respectively, which when engaged with position cams 12a to 12c installed near the floor 11 of the hoistway, output signals LU, LD, RL, and these output signals are input to the speed reference signal generator 8.

FIG. 6 shows details of the internal circuit of the speed reference signal generator 8, in which central processing units (hereinafter referred to as CPUs) 8A and C
ROM8B that stores the processing procedures of PU8A's work, etc.
RAM8C stores data such as calculation results of CPU8A
and output signals LU of the position detectors 10a to 10c,
Input device ff18 for importing LD and RL into CPU8A
D, an output device 8E for sending out the speed reference signal 2 calculated by the CPU 8A, and a timer 8F for interrupt control.
It is composed of.

FIG. 7 shows the output signal LU of the position detectors 10a-10c.
, LD, and RL, in which section A shows the upward realignment movement range, section B shows the normal landing range, and section C shows the downward realignment range, respectively.
The 0 point is the floor level, which is outside the RL operating section and the section where floor re-alignment is possible, and this section is set not to be re-aligned for safety reasons.

Figure 8A shows the speed reference signal ■ for bed re-alignment.

This pattern shows a pattern in which the voltage is raised to a constant value (■9) at startup, and then lowered at a constant slope to M1. M
7 is the speed of the iron at this time.

Next, the re-floor alignment operation will be explained with reference to the flowcharts shown in FIGS. 9 to 12. The programs shown in these flowcharts are stored in the ROM 8B and sequentially executed by the CPU 8A.

When the power is turned on, the initial setting shown in step 51 in FIG. 9 is executed, and the speed reference generator 8 is initialized. Then, the interrupt control timer 8F is activated, and step 52 of waiting for an interrupt is executed.

When an interrupt signal is output from the timer 8F to the CPU 8A, the procedure shown in FIG. 10 is executed. That is, step 61 is a processing routine that detects the stop position of car 1, and when it is recognized that re-floor alignment is necessary, the speed reference signal for re-floor alignment shown in step 62 is activated. A processing routine that calculates , operates.

FIG. 11 shows a specific flow of the processing routine shown in step 61. First, in step 71, it is determined whether the car 1 is running. Step 7 while driving
7 and performs FLAG←0 processing.

On the other hand, if the determination result in step 71 is that the car 1 is not running, that is, the car 1 is stopped, it is determined in step 72 whether or not the output signal RL of the position detector 10c in section A is r2)(4). When the result of this determination is "NO", it is determined that there is no car in the section where re-flooring is possible, and the process proceeds to step 77.If it is determined that RL is rH, the process proceeds to step 73, and the The output signal LU of the detector 10a is rH.

If the result of this determination is rYES, the process moves to the next step 74 and it is determined whether the output signal LD of the position detector 10b is rH.

That is, in steps 73 and 74, the states of the output signals LU and LD are checked, and it is determined whether the car 1 is stopped in section A, B, or C. If it is in section A, the upward traveling command CUP is issued in step 75. In the case of section C, the descending traveling command CDN is outputted to the speed control device 6 through the output device 8E in step 76. Also, in section B, there is no need to re-adjust the floor, so the process moves to step 77 and sets the flag FLAG, which controls whether or not to calculate the speed reference signal (■) for re-adjustment, to "0". set.

Step 78 sets FLAG to "1" for executing the processing routine of step 62.

FIG. 12 shows a specific flow of the processing routine shown in step 62. First, in step 111, FLAG is
1", and if FLAG is -1, in the next step 112, the position detectors 10a, 10
It is determined whether the output signals LU and LD of b are both rH. When the determination result is rYEsJ, the process goes to step 113 and sets ■2 to O, and when it is rNOJ, the process goes to step 114 to determine whether the state of the flag STA is "0" and 5TA=O. If so, ■? in step 115? ←■
After processing, the flag ST is set in the next step 116.
Set A to "1".

Further, if it is determined in step 114 that it is not 5TA-0, then in step 117, ■2 and ■1 are compared. At this time, if V p > V KL, in the next step 118, the processing of ■, ←■, -ΔV is executed,
If ■2≦■1, in step 119, ■,←V
Executes IIL processing. Step 120 is to reset the flag STA to "0" for the next re-flooring operation.

In this way, the bed re-alignment operation is performed.

[Problem that the invention seeks to solve]

If the above re-alignment operation is performed while the car is stationary, the floors can be aligned smoothly, but if passengers continue to get on and off,
When the car floor is moving due to a change in load, the above re-floor alignment operation will be performed. Furthermore, if the direction of movement of the car floor at this time is away from the normal landing range, as shown in Fig. 13, the return of the car to the normal landing range will be delayed, and area A in the figure will become longer. When the amount of movement of the car due to load changes is large, it is dangerous to leave the normal landing range with the car door open.

In particular, after the above-mentioned re-bedding operation is started, the brake (not shown) that mechanically keeps the sheep stationary is released, so the deviation of the bedding becomes wide.

The present invention solves the above-mentioned drawbacks and aims to provide a safe re-leveling device.

[Means for solving problems]

The elevator re-floor alignment device according to the present invention performs the floor alignment operation using a speed reference signal based on a first predetermined value and a second predetermined value that match the movement of the car.

[Effect]

In this invention, since a speed reference signal corresponding to the movement of the car is used, the re-flooring operation can be performed smoothly and safely even when the car is in motion.

(Embodiment of the invention) An embodiment of the invention will be described below with reference to the drawings.
In the figure, reference numeral 14 denotes a movement amount detector connected to the car 1 by a row 113, which emits a movement amount 14a containing information on the distance and direction according to the movement of the car 1. The other configurations are the same as those of the conventional example, so the same reference numerals are given and the explanation thereof will be omitted.

Assume that car 1 is now completely stationary and out of the normal landing range. Assuming that it is off to the bottom, the fourth
In the flowchart shown in the figure, step 111 is similar to the conventional example.
→Proceed to step 112, and since the signal LU is “L”, the process progresses to step 114→→procedure 115→procedure 116, and the speed reference signal V is set to the first predetermined value ■. is set. Then, in the next interrupt cycle, from step 114 to step 117 → step 121
Then, since the signal LU is "L", the process moves to step 123. Since car 1 is completely stopped, the amount of movement is 14a.
is "0", and the process moves from step 123 to step 118, where the speed reference signal V is subtracted by Δ■. Next, after the interrupt, the speed reference signal ■, decreases according to the same processing procedure until it reaches the second predetermined value ■1, and when ■2≦■1, the second predetermined value ■1 is determined in step 119. Fixed. The relationship between the speed reference signal vP and the movement of the car 1 at this time is exactly the same as that shown in FIG. 8, which has already been explained in the conventional example.

Next, a case will be described in which the car 1 is located below the normal landing range and the car 1 continues to descend due to a change in load. In the flowchart of Figure 4, step 12
The transition up to 3 is the same as when the car 1 is stationary. Since the car 1 is descending, the movement amount 14a shows a negative value, so the process does not proceed to step 118, and the speed reference signal ■ is set to the first predetermined value ■ in step 115. This remains the first predetermined value ■.

When the car starts to be pulled back by the speed reference signal V, the moving amount 14a becomes a positive value, and the process proceeds from step 123 to step 118, where the speed reference signal V is returned.

begins to decrease by ΔV. And the second predetermined value.

When the value decreases to 1, the process moves from step 117 to step 119 and is maintained at the second predetermined value (1). Speed reference signal at this time■
The movements of car 2 and car 1 have the relationship shown in FIG.

That is, while the car 1 is moving away from the normal landing range, the speed reference signal ■ is set to the large first predetermined value ■.
. The pullback of car 1 can be accelerated in order to maintain the same condition.

In the above embodiment, the movement amount detector 14 connected to the car 1 by the rope 13 is used, but the speed detector 7 may be used to detect movement.

Further, the means for detecting the relative distance between the car 1 and the landing 11 is not discrete as in the above embodiment (it may be a continuous means for detecting using electromagnetic action or the like).

〔Effect of the invention〕

As described above, according to the present invention, the speed reference signal is held at the first predetermined value when the car is moving away from the normal landing range, so that smooth and safe re-flooring can be achieved. There is an effect that the device can obtain.

[Brief explanation of the drawing]

FIG. 1 is a circuit diagram showing an elevator re-flooring device according to an embodiment of the present invention, FIG. 2 is a block diagram showing an internal circuit of the speed reference signal generating device in FIG. 1, and FIG. A characteristic diagram showing the relationship between car speed and distance in the vicinity of a floor, Figure 4 is a flowchart showing the processing procedure for generating a speed reference signal for re-floor alignment, and Figure 5 is a circuit diagram of a conventional elevator re-floor alignment device. , FIG. 6 is a block diagram showing the internal circuit of the speed reference signal generator in FIG. 5,
Fig. 7 is an explanatory diagram of the operation of a conventional position detector, Fig. 8 is a characteristic diagram showing the relationship between conventional car speed and distance, and Fig. 9 is an initial setting and interrupt wait processing of a conventional speed reference signal generator. 10 is a flowchart showing the processing procedure after an interrupt. FIG. 11 is a flowchart showing the procedure for detecting the car stop position in FIG. 10. FIG. 13 is a flowchart showing the processing procedure for generating a speed reference signal for floor assembly, and is a characteristic diagram showing the relationship between car speed and distance near a floor in the conventional invention. 1... Car, 2 ... Counterweight, 3... Rope, 4.
... sheave, 5 ... electric motor, 6 ... speed control device,
7... Speed detector, 8... Speed reference signal generator,
9... Subtractor, 10a-10c... Position detector, 1
1...Floor, 12a to 12c-...Cam, 8A.
CPU, 8b ROM. 8C...RAM, 8E...Timer for interrupt control. Note that the same reference numerals in the figures indicate the same or equivalent parts.

Claims (1)

[Claims] A speed reference signal and car speed are constantly compared in a re-flooring device that automatically restarts the elevator car and stops it within the normal landing range when the elevator car stops outside the normal landing range. and circuit means for generating a speed reference signal in a time-based manner so that the difference between the two values decreases, and the speed reference signal is raised steeply to a first predetermined value in a direction in which the car moves away from the normal landing range. While moving to
The first predetermined value is held, and while the car is moving in a direction approaching the normal landing range, the speed reference signal is gradually decreased until it reaches the second predetermined value. Elevator re-floor alignment equipment.