JPH1081230A - Interval controller of lift equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the accuracy of an equipment interval by measuring the total circumference value of a lift from the amount of rope travel, and if this measured value is within the allowable range of a theoretical calculation value, judging it as this total circumference value of this lift, thereby compensating the equipment interval on the basis of a portion of errors lying between the lift total circumference value and the theoretical value. SOLUTION: A programmable controller 14 detects one unit of optional equipment during the operation of a lift, and a total circumference value of the lift is measured by this one optional equipment upon counting it with a rope travel detecting switch 9. If this measured total circumference value is within the allowable range of a theoretical calculation value of a pulse number in which one unit of optional carrier goes around, detected by a proximity switch in advance, it is judged as the total circumference value of the lift, whereby an equipment interval is compensated on the basis of a portion of errors lying between this lift total circumference value and a theoretical value of the lift total circumference value. With this constitution, accuracy in the equipment interval is improvable, making the extent of equipment delivery efficiency promotable as well.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lift control apparatus for a lift, which controls the distance between the lifts in a lift to a constant value.

[0002]

2. Description of the Related Art FIG. 1 is a diagram showing a conventional general lift track and various stops. In the figure, 1 is a transporter, 2 is a rope for transporting the transporter 1, 3 is a pulley for turning the rope 2, 4 is a rail on which the transporter 1 is detached from the rope 2 at a stop, and 5 is a rail on which the transporter 1 is mounted. This is a tire for pushing the transporter 1 in the stop.
Some are linked to the driving force of the pulley 3 and others are not linked. Reference numeral 6 denotes a rail for unloading the transporter 1 from the garage onto the rope 2 which is the main line. FIG. 13 is a diagram showing the inside of a conventional lift stop. In the figure,
7a is a clutch for connecting the tire 5 not linked to the pulley 3 to the driving force of the pulley 3 to adjust the distance between the transporters 1 and pushing the transporter 1 at a high speed. 7b is a clutch for pushing the transporter 1 at a low speed. Is a carry-over passage detection switch for detecting that the carry-over 1 passes in the stop.

FIG. 14 shows a conventional apparatus for controlling the interval between lifters. In the figure, a reference numeral 9 indicates a movement distance of the rope 2, and a rope movement detection switch 10 for detecting the rotation of the pulley 3 is used. A virtual transport setting switch for inputting a signal indicating that there is, a virtual transport simultaneous clear switch 11 for clearing all the virtual transports set by the virtual transport setting switch 10, and 12 is a release timing when the transport 1 is to be released from the garage. A lamp 13 for notifying is a buzzer for making the same as the lamp 12. 14 inputs these carry-over passage detection switch 8, rope movement amount detection switch 9, virtual carry-over setting switch 10, and virtual carry-out simultaneous clear switch 11;
This is a programmable controller that turns on and off the buzzer 13 and the clutches 7a and 7b.

Next, the operation will be described. Conventionally, when determining the interval between transporters, when adjusting the lift or performing periodic inspections,
Is attached, and the carrier 1 is made to make one round after being detected by the carrier passing detection switch 8, and the rope movement amount detecting switch 9 for detecting the rotation of the pulley 3 by the distance of one round detected by the next carrier passing detecting switch 8. And the number of pulses of the entire circumference (the total circumference pulse) is measured by integrating the rope movement amount pulse.
The number of pulses obtained by dividing the number by the determined total number of carriers was used as the reference number of pulses between the carriers. In the control method of the transport interval, one reference transport is determined, the theoretical position of each transport is calculated by the programmable controller 14 from the reference transport, and the actual transport position and the logical position passing through the transport passage detection switch 8 are determined. In comparison, the programmable controller 14 performs control using a calculation formula for calculating the time for connecting the clutch 7. As shown in FIG. 15, the control method of the clutches 7a and 7b is such that when (theoretical position-actual position) = 0, that is, the number of pulses that the carry-in device 1 makes one revolution and returns and the actual one revolution When the number of returned pulses is the same, the clutch 7a is connected between X and Z to push the transporter 1 at high speed, and between Z and Y, the clutch 7b is connected and push the transporter 1 at low speed. The paper is pushed between X and Y at half of the high speed and half of the low speed. When (theoretical position−actual position)> 0, that is, when the number of pulses that the transporter 1 makes a round and returns is larger than the number of pulses that actually makes a round and returns, the clutch 7a is connected. Longer time to push the transporter 1 at high speed (X to Z
1), the time for pushing the transporter 1 at a low speed by connecting the clutch 7b is shortened (between Z1 and Y), and the time for pushing the transporter 1 at a high speed is increased to approach the theoretical position. Arrange. When (theoretical position-actual position) <0, that is, when the number of pulses that return after one round of the transport theoretically is smaller than the number of pulses that return after one actual rotation, the clutch 7a is connected and the transport is performed. 1 at high speed (X to Z2
Interval), the clutch 7b is connected, and the time for pushing the transporter 1 at a low speed is extended (between Z2 and Y), the time for pushing the transporter 1 at a low speed is extended to approach the theoretical position, and the interval between the transporters is reduced. Trim.

[0005] Next, when the transporter 1 is removed due to a failure of the transporter 1 or the like, the programmable controller 14 misunderstands that the interval between the previous transporters is widened and controls to send the next transporter 1 forward. By pressing the switch 10, the transporter 1 is assumed to be located at the thinned position. Any number of virtual carriers can be set. As a method of clearing the virtual transporter, all the virtual transporters set can be cleared by pressing the virtual transporter simultaneous clear switch 11. Next, when unloading the transporter 1, the lift is operated at a low speed in order to keep a regular interval between the transporters as much as possible, and when the transporter 1 is unloaded, a signal is sent to a staff by a buzzer 12 or a lamp 13. Had unloaded Carrier 1 manually.

[0006]

Since the conventional lift interval control device for a lift is constructed as described above, a single load is mounted at the time of lift adjustment or periodic inspection in order to determine the load interval. The circumference must be measured, and there has been a problem that the adjustment time becomes longer. Further, when setting a virtual transport, there is a problem that the operator forgets to set the virtual transport. In addition, since only the virtual transport device can be cleared at once, there is a problem that all the devices are cleared when one transport device is returned to the track. In addition, since the work of unloading the carriage from the garage to the main line is performed manually, there is a problem that there are many mistakes and it is not possible to unload the carriage at an accurate interval between the carriages. Further, when calculating the clutch connection time, there is a problem that a constant of a calculation formula for calculation must be written in the programmable controller. In addition, when measuring the entire circumference, there is a problem that the measured entire circumference pulse changes because the range for adjusting the transporter interval is also measured. SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems, and has as its object to provide a lift carrier interval control device capable of improving the accuracy of the interval between the transporters and improving the efficiency of unloading the transporters.

[0007]

SUMMARY OF THE INVENTION According to the present invention, there is provided an apparatus for controlling the interval of a transporter of a lift, comprising: a rope circulating between stops at both ends; and a plurality of transporters detachably attached to the rope at the stops. In a lift spacing control device for controlling a lift spacing of a lift for operation, a theoretical value calculation means for calculating a theoretical value of the entire circumference value of the lift by which the lift is conveyed, and giving the calculated value an allowable width. When,
Measuring means for detecting any one transporter during operation of the lift and measuring the entire circumference of the lift from the amount of rope movement, and the value measured by this measuring means is an allowable range of the calculated value of the theoretical value calculating means If it is within, the means for judging this measured value to be the circumference of the lift, and the carrier spacing based on the error value between the circumference of the lift determined by this means and the theoretical value of the circumference of the lift are determined. Correction means.

[0008] Further, a rope circulating between the stops at both ends, and a plurality of transporters detachably attached to the ropes at the stops are sequentially attached at regular intervals to control the intervals of the lift transporters for circulating operation. In the device, the transporter calculates the theoretical value of the entire circumference value of the lift around the lift, and a theoretical value calculation means for giving the calculated value an allowable width,
Measuring means that detects any number of transporters during the operation of the lift, integrates the amount of movement of each rope, and measures the circumference of the lift, and measurement within the allowable range of the calculated value of the theoretical value calculating means Means for averaging each measured value by the means to determine the circumferential value of the lift; and, based on the error value between the circumferential value of the lift determined by this means and the theoretical value of the circumferential value of the lift, the distance between the carriages. And means for correcting

In addition, another theoretical value calculating means for calculating the theoretical value of the distance between the carriages and another measuring means for measuring the distance between the carriages from the amount of movement of the rope are provided, and the value measured by the other measuring means is calculated. When the theoretical value of the interval between the transporters becomes the same as the theoretical value, the transporter is ejected. Also, the rope speed,
At the time of unloading the transporter, the speed was low, and the rest was high speed. Also, when the thinning operation is performed by removing the transporter from the rope, when there is no transporter within a certain range from the calculated theoretical position, a unit that determines that the transporter is thinned out,
A means is provided for automatically setting a virtual transporter at a thinned-out position based on the result of the thinning-out determination, and the interval between the transporters is controlled.

[0010] Also, there is provided a lift interval control device for controlling movement of a lift using either a high-speed clutch or a low-speed clutch in a control section. The passage time of the control section is calculated by measuring the passage time of the carriage by the clutch,
These times are averaged to automatically determine the clutch connection time. In addition, there is provided a means for converting the amount of movement of the rope into the number of pulses, and the number of pulses of the movement of the rope as a fixed value is set as the number of pulses of the movement of the rope in the measurement section when the theoretical value and the actual value of one round of the carriage are the same. The number of pulses obtained by adding the fixed value is used as the number of all-around pulses.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION

Embodiment 1 FIG. Embodiment 1 of the present invention will be described with reference to the drawings. 2 and 3 are views showing the inside of the stop according to the first embodiment of the present invention and a view showing a control device for the interval between the carriages. In the drawings, the same parts as those in the related art are denoted by the same reference numerals and description thereof is omitted. . Reference numeral 15 denotes a proximity switch for detecting that the transporter has passed in the stop.

Next, an outline of the operation of the interval control device for the transporter 1 according to the first embodiment configured as described above will be described.
During operation, the proximity switch 15 detects an arbitrary one of the transporters 1, and the arbitrary one of the transporters 1 counts with the rope movement amount detection switch 9 to measure the entire circumference. The number of pulses that one arbitrary carry 1 makes one round detected by the proximity switch 15 is (the number of interval pulses between the carry and the carry) x the number of attached carry, so that the entire circumference is known in advance. If the number of pulses detected within the range of the value is set to the number of all-around pulses, the corresponding carrier is known, and the error is used as the correction amount of the carrier interval. As described above, the number of carriage interval pulses is automatically calculated, and highly accurate carriage interval control can be performed.

FIG. 4 is a flow chart of the first embodiment, in which the full-period pulse of the theoretical value for one round of the lift by the transporter 1 is calculated (D1), and the data D1 is given a width (± X). (D
2, D3). An arbitrary one of the transporters 1 is detected, and the rope movement amount is integrated (D4). If the data is within the range of the above data when the transporter 1 is detected (D3 <D4 <D2), the integrated data D4 is set as a full-circle pulse. By dividing the above-mentioned all-around pulse by the number of attached carriages, the carriage interval pulse is calculated.

Embodiment 2 FIG. In the first embodiment, an example in which the number of pulses in the entire circumference is performed by an arbitrary single transporter 1 has been described. However, the present invention is not limited to this, and the number of transporters 1 that detect the number of pulses in the entire circumference is increased (for example, 5), the average value of which is taken as the number of pulses around the entire circumference, and is used as the correction amount of the carrier interval. As described above, it is possible to perform the transporter interval control with higher accuracy than in the first embodiment.

FIG. 5 is a flowchart of the second embodiment. The theoretical pulse is calculated (D1) and its data D1
Have a width (± X) (D2, D3). D4 (1) to D4 which detect the transporter 1 and integrate the rope movement amount
(5). If the data is within the range of the above data when the carrier is detected (D3 <D4 (1) <D2), the integrated data D4
(1) to D4 (5) are all-around pulses. For example, data obtained by measuring and averaging the full-circle pulses of five carriages is defined as a full-circle pulse. If the averaged all-around pulse is divided by the number of attached carriages, the carriage interval pulse is calculated.

The number of all-round data collection may be any number.
Also, the number of all-round measurements may be any number.

Embodiment 3 Embodiment 3 of the present invention will be described with reference to the drawings. FIG. 6 and FIG. 7 are diagrams showing a control device for the inside of the stop and the interval between the transporters according to the third embodiment of the present invention. In the figure, the same parts as those in the first embodiment are denoted by the same reference numerals, and the description is omitted. Numeral 16 denotes a pushing tire with a clutch for bringing a transporter in a garage into a stop.

Next, a description will be given of the operation of the carry-out unit 1 leaving the garage of the carry-away interval control device according to the third embodiment configured as described above. When leaving the transporter 1 from the garage,
The programmable controller 14 calculates the theoretical value of the interval between the transporters 1 and measures the actual value of the interval between the transporters 1 from the amount of movement of the rope. Here, when the actual value and the theoretical value of the interval of the transporter 1 become the same, the pushing tire 16 with the clutch is used.
Is operated and the transporter 1 is unloaded. If the retrieval is performed as described above, the retrieval can be performed at an appropriate carry-out interval without causing an erroneous operation by a staff member.

FIG. 8 is a flowchart of the third embodiment. The number of carry-out interval pulses is calculated (S1), a delivery mode is selected (S2), and operation is performed (S3). After starting operation (S
4), the actual value of the carry interval is calculated by integrating the rope movement amount pulse (S5), and when it becomes the same as the theoretical value of the carry interval pulse number (S6), the pushing tire 16 with the clutch is turned on (S7). Remove the transport.

Embodiment 4 A description will be given of an operation of the main line side of the lift control device of the lift spacing device according to Embodiment 4 of the present invention when the transport device is unloaded from the garage. The rope speed on the main line side is low only when leaving the transporter, and it is operated at high speed otherwise. If the retrieval is performed as described above, the retrieval operation can be performed efficiently.

FIG. 9 is a flow chart of the fourth embodiment, in which the main line side rope speed is changed by turning on / off the pushing tire 16 with clutch.

Embodiment 5 An operation for automatically recognizing the virtual transporter of the lift transporter interval control device according to the fifth embodiment of the present invention will be described. If there is no carry 1 within a certain range from the theoretical position calculated by the programmable controller 14, it is determined that there is no carry 1 and the theoretical position is changed to the next theoretical position. As described above, the virtual controller can be automatically set by causing the programmable controller 14 to determine that the carrier 1 is present when the carrier 1 is not within a certain range.

FIG. 10 is a flowchart of the fifth embodiment.
The rope movement amount pulse for one round of each carrier is integrated (D1
5) The value (D20) obtained by adding the coefficient (Z) to the value of the theoretical position of one round of the transporter is used as the rope movement amount pulse integrated value (D1).
If 5) is exceeded (D15> D20), it is determined that the transporter has been thinned out, and the virtual transporter is automatically set.

Embodiment 6 FIG. Embodiment 6 of the present invention will be described with reference to the drawings. FIG. 2 and FIG. 3 are views showing a control device for the inside of the stop and the interval between the transporters according to the sixth embodiment of the present invention. The function of automatically writing the calculation formula for calculating the clutch connection time of the interval control device according to the sixth embodiment configured as described above will be described. The carry-over passage detection switch 8, the proximity switch 15, and the rope movement amount detection switch 9 are input to the programmable controller 14, and the carry-over passage time in the section A to B in FIG. The case is measured, and the time for passing in the middle is calculated. The measured data is collected several times and the data is averaged. The programmable controller 14 has a clutch 7a or 7
The averaged passing pulse data is written in the calculation formula for calculating the time for connecting b. As described above, by writing the averaged passing pulse data in the calculation formula for calculating the time for connecting the clutches 7a and 7b by the programmable controller 14, the calculation formula can be automatically obtained.

FIG. 11 is a flowchart of the sixth embodiment.
The passing time (D50) of the high-speed clutch 7a and the passing time (D51) of the low-speed clutch 7b are measured to calculate an intermediate passing time (D52). A calculation formula for calculating the clutch connection time by averaging the above data is written, and the calculation formula is automatically obtained.

Embodiment 7 A function of stabilizing the measurement of the entire circumference pulse of the lift transporter interval control device according to the seventh embodiment of the present invention will be described. The passage time of the transporters in the sections A and B in FIG. 2 is currently controlling the interval between the transporters by comparing the theoretical position with the actual position, and thus the number of pulses passed through the transporters in the sections A and B varies. In the sections A and B, the connection time of the high-speed clutch 7a and the connection time of the low-speed clutch 7b are each halved, that is, the passage time when the theoretical position and the actual position are the same is set as a fixed value, and the proximity switch 15 Cargo passage detection switch 8 that has returned
The total number of pulses of the rope movement amount up to and the number of pulses obtained by converting the transit time of the carriage in the sections A and B into pulses is defined as a full-circle pulse. By adding the number of passing pulses that change as described above as a fixed value, it is possible to stabilize the entire circumference pulse.

FIG. 12 is a flowchart of the seventh embodiment.
In FIG. 2, the number of passing pulses (D52) when the connection time of the high-speed clutch 7a and the low-speed clutch 7b is halved in the sections A and B is fixed, and the amount of rope movement from the proximity switch 15 to the carry-over passage detection switch 8 is set. It is added to the number of pulses of (D60) to obtain an all-around pulse (D61).

[0028]

Since the present invention is configured as described above, it has the following effects. According to the first invention, the entire circumference of the lift is measured by any one of the transporters during the operation of the lift, and the transporter interval is corrected based on the error value between the measured full circumference and the theoretical value. With this configuration, the entire circumference value is automatically measured during the operation of the lift, and the carry interval can be corrected. Therefore, there is an effect that highly accurate carry control is performed.

According to the second aspect of the present invention, during the operation of the lift, the entire circumference of the lift is measured with any of a plurality of transporters to correct the intervals between the transporters. Control can be measured. According to the third aspect of the present invention, since the means for ejecting the transporter at regular intervals is provided when unloading the transporter, it is possible to prevent mistakes in unloading performed manually.

According to the fourth aspect of the present invention, the rope speed is set to be low only at the timing of carrying out of the carry-out machine, and the operation is performed at a high speed otherwise, so that the carry-out efficiency of the carry-out machine can be improved. There is. Further, according to the fifth aspect, since the means for automatically setting the virtual transporter at the thinned-out position when the transporter is thinned out is provided, there is an effect that the setting is not forgotten.

According to the sixth aspect of the present invention, it is possible to automatically write a calculation formula for calculating the connection time of the clutch of the interval control device of the transporter. According to the seventh aspect,
This has the effect of stabilizing the measurement of all-peripheral pulses, which is the basis of the interval control of the transporter.

[Brief description of the drawings]

FIG. 1 is an overall configuration diagram of a conventional general lift.

FIG. 2 is a configuration diagram inside a lift stop according to the first embodiment of the present invention.

FIG. 3 is a configuration diagram of a control device for a carrier interval according to the first embodiment of the present invention.

FIG. 4 is a flowchart of a control device for the interval between the transporters according to the first embodiment of the present invention.

FIG. 5 is a flowchart of a control device for a carrier interval according to the second embodiment of the present invention.

FIG. 6 is a configuration diagram of a lift stop according to a third embodiment of the present invention.

FIG. 7 is a configuration diagram of a control device for a carrier interval according to a third embodiment of the present invention.

FIG. 8 is a flow chart of a control device for a carrier interval according to Embodiment 3 of the present invention.

FIG. 9 is a flow chart of a control device for a carrier interval according to a fourth embodiment of the present invention.

FIG. 10 is a flow chart of a control device for a carrier interval according to a fifth embodiment of the present invention.

FIG. 11 is a flowchart of a control device for a carrier interval according to a sixth embodiment of the present invention.

FIG. 12 is a flow chart of a control device for a carrier interval according to a seventh embodiment of the present invention.

FIG. 13 is a configuration diagram of a conventional lift stop.

FIG. 14 is a configuration diagram of a conventional control device for the interval between the transporters.

FIG. 15 is a diagram showing a clutch connection time of a conventional control device for the interval between the transporters.

[Explanation of symbols]

1 Cargo, 2 Rope, 3 Pulley, 4 Pushing Rail, 5 Tire, 6 Outgoing Rail, 7a High Speed Clutch, 7b Low Speed Clutch, 8 Cargo Passage Detection Switch, 9 Rope Movement Detection Switch, 10 Virtual Cargo Setting Switch, 14 Programmable Controller , 15 proximity switch.

Claims (7)

[Claims] 1. A lift carrying device for controlling a distance between a rope circulating between stops at both ends and a plurality of carrying devices which are detachably attached to the rope at the stops at regular intervals in order to perform a circulation operation of the lift. In the interval control device,
The theoretical value of the circumference value of the lift transported by the transporter is calculated, a theoretical value calculating means for giving an allowable width to the calculated value, and any one transporter is detected during the operation of the lift, and the rope movement amount is calculated. Measuring means for measuring the entire circumference of the lift from the means, and means for determining the measured value to be the entire circumference of the lift if the value measured by the measuring means is within the allowable range of the calculated value of the theoretical value calculating means. And a means for correcting the carry interval based on the error value between the full circumference value of the lift determined by this means and the theoretical value of the full circumference value of the lift, Interval control device. 2. A lift carrying device for controlling the distance between a rope circulating between stops at both ends and a plurality of carrying devices which are detachably attached to the rope at the stops at regular intervals in order to carry out circulation operation. In the interval control device,
Theoretical value calculating means for calculating the theoretical value of the entire circumference value of the lift in which the transporter makes a full circumference of the lift, and giving the calculated value an allowable width;
Measuring means for detecting an arbitrary plurality of transporters during the operation of the lift, integrating the movement amounts of the ropes to measure the entire circumference of the lift, and being within the allowable range of the calculated value of the theoretical value calculating means. Means for averaging the measured values of the above-mentioned measuring means to determine the entire circumference of the lift; and calculating the error value between the full circumference of the lift determined by this means and the theoretical value of the entire circumference of the lift. And a means for correcting the carry interval. 3. The apparatus according to claim 1, further comprising another theoretical value calculating means for calculating a theoretical value of the distance between the carriages, and another measuring means for measuring the distance between the carriages from the amount of movement of the rope. 3. The apparatus according to claim 1, wherein the controller is configured to eject the transporter when the value of the transporter becomes the same as the theoretical value of the transporter interval. 4. The apparatus according to claim 3, wherein the rope speed is set to a low speed at the time of unloading of the transporter, and is increased at other times. 5. A means for judging that the transporter has been thinned out when the transporter is removed from the rope and the thinning operation is performed, and when there is no transporter within a certain range from the calculated theoretical position, the transporter is thinned out.
5. The apparatus according to claim 1, further comprising: means for automatically setting a virtual transporter at a position where the virtual transporter is thinned out based on the result of the thinning-out determination, so as to control an interval between the transporters. An apparatus for controlling the distance of a lift carrier as described in the above. 6. An interval control device of a lift for controlling the movement of a loader using either a high-speed clutch or a low-speed clutch in a control section, wherein the transit time and the low speed of the loader by the high-speed clutch in the control section. 6. The clutch according to claim 1, wherein the passage time of the control section is calculated by measuring a passage time of the carriage by the clutch, and the connection time of the clutch is automatically determined by averaging these times. An interval control device for a transporter of a lift according to any one of the preceding claims. 7. A means for converting the amount of movement of the rope into the number of pulses, wherein the number of pulses passed through the carriage in the measurement section when the theoretical value and the actual value of one round of the carriage are the same is fixed, and the amount of movement of the rope is determined. The interval control device for a lift transporter according to any one of claims 1 to 5, wherein the number of pulses obtained by adding the number of pulses and the fixed value is used as the number of all-around pulses.