CN117819322A - Operation method of group control elevator system - Google Patents

Abstract

The invention provides a running method of a group control elevator system, when at least one car on one track runs along a main running direction but is about to run along the direction opposite to the main running direction, the car is set as a target car, the control system controls the target car to continue running along the main running direction on the track where the target car is located, and then the target car is switched to another track to run reversely after reaching a switching device closest to the target car, or the control system controls at least one car on the track where the target car is located except the target car and running along the main running direction to run away from the current track to change the main running direction of the current track, and then the target car runs reversely on the original track. The invention can monitor the quantity of the upward and downward cabs on the track in real time, and control the running paths of cabs which are about to run in the opposite direction to the main running direction of the track according to the quantity of the upward and downward cabs, so that the cabs respond to the demand in time and do not influence the running of other cabs.

Description

Operation method of group control elevator system

Technical Field

The invention belongs to the technical field of elevators, and particularly relates to an operation method of a group control elevator system.

Background

In modern society and economic activities, elevators have become indispensable people-or load-carrying vertical transport means. Since 1854 elevator invention, an elevator car runs in a traction driving mode by adopting a steel wire rope wheel, and a machine room, a traction motor and a speed reducer are arranged on the top layer of a building to drive a steel wire rope to pull the car and a counterweight to run on a track in a hoistway. This drive allows for generally only one car to be operated within a single hoistway, and a single car mode of operation provides for a low-rise, low traffic floor. With the rapid development of modern cities, the defects of long waiting time and low conveying efficiency of the elevator in a single-car running mode are continuously amplified from the beginning of pulling out high-rise buildings and super-high-rise buildings with large population density, and the traditional single-car elevator running mode is difficult to adapt to the rapid development requirement of the modern city buildings.

In order to improve the utilization rate of building space and the transportation efficiency of the elevator and reduce the manufacturing cost of the building and the elevator, along with the continuous development of engineering technology level, a multi-car parallel elevator is being developed and applied. The multi-car parallel elevator adopts a traction-wire-rope-free direct driving technology, so that a plurality of elevator cars can be operated in the same hoistway at the same time, and the elevators among the various hoistway can be mutually switched to operate in the hoistway, thereby realizing overrun operation.

In intelligent multi-car parallel elevator systems, there may be multiple cars on each hoistway, and the cars may be moved in different hoistways by a switching device. In order to ensure the running efficiency, the cars running in the same direction are preferably arranged in the same hoistway as much as possible, otherwise, a large number of opposite running conditions can occur in the same hoistway, although the cars can be switched to another track to avoid running through a track cutting area, frequent track switching not only affects the passing efficiency, but also can cause energy waste, so that the running efficiency can be maximized by ensuring that the cars in the same track run in the same direction as much as possible. However, when one car has conveyed the nearest floor passenger in the call, the opposite direction is performed in response to the other call signal. At this time, if the car runs reversely along the original well, the car can interfere with other cars running in the same direction with the car before, and the overall running efficiency of the system is affected.

Disclosure of Invention

The invention aims to solve the problems in the prior art, and provides a running method of a group control elevator system, which can monitor the quantity of uplink and downlink cabs on a track in real time, and control the running paths of cabs to be run in the opposite direction to the main running direction of the track according to the quantity of the uplink and downlink cabs, so that the cabs respond to the requirement in time without affecting the running of other cabs, thereby improving the running efficiency of the elevator system.

In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:

the elevator system comprises at least two vertical tracks, at least one switching device, at least two self-driven cabs which can be smoothly switched between the two tracks through the switching device, and a control system, when at least one cab on one track runs along the main running direction but is about to run along the direction opposite to the main running direction, the cab is set as a target cab, the control system controls the target cab to continue to run along the main running direction on the track where the target cab is located, and then the target cab is switched to the other track to run reversely after reaching the switching device closest to the target cab, or the control system controls at least one cab which runs along the main running direction except the target cab on the track where the target cab is located to run away from the current track until the main running direction of the current track is changed, and then the target cab runs reversely on the original track.

As a further improvement of the above technical scheme:

the control system receives running directions of the cabins on the tracks in real time, calculates the number of upward cabins and the number of downward cabins on the tracks after receiving running direction information of the cabins, defines the track as a main upper track if the number of upward cabins on one track is larger than the number of downward cabins, defines the track as a main lower track if the number of downward cabins on one track is larger than the number of upward cabins, and defines the main running direction on the main upper track as an upward direction and the main running direction on the main lower track as a downward direction.

If the number of the upward cabins and the number of the downward cabins on one track are equal, judging the number of other tracks except the track in the elevator system, if the number of the main upper tracks is larger than the number of the main lower tracks in the other tracks, defining the track as the main upper tracks, and if the number of the main lower tracks is larger than the number of the main upper tracks, defining the track as the main lower tracks.

When at least one car on one track runs along the main running direction, but is about to run along the direction opposite to the main running direction, the car is set as a target car, and a switching device is arranged in front of the target car in the main running direction, so that the control system controls the target car to continue running along the main running direction on the track where the target car is located, and then the target car is switched to the other track to run reversely after reaching the switching device closest to the target car.

The method comprises the steps of selecting a target track according to a main running direction, wherein the main running direction of the target track is opposite to the main running direction of a current track, selecting a switching device which enters the target track and is closest to a target car, and controlling the target car to enter the target track through the selected switching device by a control system.

When at least one car on one track runs along the main running direction, but is about to run along the direction opposite to the main running direction, the car is set as a target car, and in the main running direction, if no switching device is arranged in front of the target car, at least one car running along the main running direction on the current track is driven away from the current track until the main running direction of the current track is changed, and then the target car runs reversely.

The car driving off the current track is: among all the cars traveling in the main traveling direction except the target car on the current track, the cars passing through the switching device are sequentially switched to another track according to the time sequence until the number of the cars traveling in the main traveling direction on the current track is smaller than the number of the cars not traveling in the main traveling direction.

And when all the cars except the target car on the current track travel along the main traveling direction, the target car reversely travels after all the cars except the target car on the current track travel away from the current track.

The case where the car is traveling in the main traveling direction, but is to be traveling in the direction opposite to the main traveling direction includes: after the elevator finishes the internal calling task, the elevator generates an external calling requirement, and the control system selects the elevator to respond to the external calling requirement according to the judgment of the built-in program, wherein the running direction of the elevator to respond to the external calling requirement is opposite to the current running direction.

The beneficial effects of the invention are as follows: the number of the upward and downward cabs on the track is monitored in real time, and the running paths of cabs which are about to run reversely with the main running direction of the track are controlled and planned according to the number of the upward and downward cabs, so that the cabs respond to the demand in time without affecting the running of other cabs, the running efficiency of the elevator system is improved, the total switching frequency of the cabs is reduced, the running energy consumption is saved, and the reliability of the elevator system is improved.

Drawings

Fig. 1 is a schematic diagram of a first embodiment of the present invention.

Fig. 2 is a schematic diagram of a second embodiment of the present invention.

Detailed Description

The following describes specific embodiments of the present invention in detail with reference to the drawings. It should be understood that the detailed description and specific examples, while indicating and illustrating the invention, are not intended to limit the invention.

Spatially relative terms, such as "above … …," "above … …," "upper surface at … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial location relative to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "over" other devices or structures would then be oriented "below" or "beneath" the other devices or structures. Thus, the exemplary term "above … …" may include both orientations of "above … …" and "below … …". The device may also be positioned in other different ways (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

A method of operating a group control elevator system, said elevator system comprising at least two vertical rails, at least one switching device and at least two self-driven cars smoothly switchable between the two rails via the switching device.

The switching device comprises a rail cutting rail which can be communicated with two adjacent rails. Specifically, the switching device switches to connect the rail cutting rail to two adjacent rails or switches to connect the vertical rail where the rail cutting rail is located.

The elevator system also comprises a suspension device, a driving device, a control system and the like, wherein the car is hinged on the suspension device, and the driving device drives the suspension device to move along the track and the track cutting track.

The suspension device, the driving device and the switching device may adopt other patent applications or technical schemes in the patent of the applicant, and are not described herein.

The operation method is as follows:

the control system receives the running direction information of each car on each track in real time, calculates after receiving the running direction information of each car, and calculates the number of the upward cars and the number of the downward cars on each track. If the number of the upward cabins on one track is larger than the number of the downward cabins, the track is defined as a main upper track. If the number of the descending cars on one track is larger than the number of the ascending cars, the track is defined as a main lower track. If the number of the upward cabins on one track is equal to the number of the downward cabins, the control system judges the number of other tracks except the track in the elevator system. If the number of the main upper tracks is larger than that of the main lower tracks in other tracks, defining the main upper tracks as the main upper tracks, and switching part of the descending cabs on the main upper tracks to other main lower tracks; if the number of the current main lower tracks is greater than that of the main upper tracks, defining the tracks as the main lower tracks, and switching part of the ascending lift cars on the tracks to other main upper tracks; if the current main lower track number is equal to the main upper track number, continuing to wait until the current main lower track number is not equal to the main upper track number, and then judging and controlling actions. And defining the main running direction on the main upper rail as the upward direction and the main running direction on the main lower rail as the downward direction.

The number of cars and the direction of travel on each track are dynamically changing, so that whether a track is a main upper or lower track is not constant, but changes in real time.

The method for receiving the running direction information of each car by the control system can be judged by the motor steering data or other prior art.

The control system controls the running of the car according to the information and the built-in program, and the two conditions are divided into:

in the first case, when one or more cars on one track are traveling in the main traveling direction, but are about to travel in the direction opposite to the main traveling direction, the one or more cars are set as target cars, and in the main traveling direction, the car is preceded by a switching device. In this case, the control system controls the target car to continue running along the main running direction on the track where the target car is located, and then to switch to another track for reverse running after reaching the switching device closest to the target car, and the other track is set as the target track. Preferably, the main running direction of the track after switching, i.e. the target track, is opposite to the main running direction of the track before switching.

The car is running along the main running direction, but the situation that the car is running along the direction opposite to the main running direction occurs in various situations, for example, the car completes the inner calling task, i.e. the passengers in the car are transported completely, but the elevator has the outer calling requirement, someone on a floor needs to take the elevator, the control system selects the car to pick up the passengers according to the built-in program after judging, and the running direction of the elevator to pick up the passengers is opposite to the current running direction.

For the first case, when one or more up-going cabs on the main upper rail are about to go down, the control system controls the target cabs to go up on the main upper rail where the target cabs are located, and then switch to another rail to go down after reaching the switching device closest to the target cabs, and the other rail is the target rail. When one or more descending cabs on the main lower track are about to ascend, the control system controls the target cabs to continue descending on the main lower track where the target cabs are located, and then the target cabs are switched to another track to ascend after reaching the switching device closest to the target cabs.

It should be noted that the main running direction of the target track is preferably opposite to the main running direction of the current track by the control system. That is, the target track is selected according to the main traveling direction, and then the switching device closest to the target track is selected. I.e. the priority of the target track selection is higher than the priority of the switching means selection. The target track is typically two tracks adjacent to the current track. If the current track is the main upper track, the left track adjacent to the current track is the main lower track, and the right track adjacent to the current track is the main upper track, the left track adjacent to the current track is selected as the target track, and then the switching device closest to the target track is selected. If the main running directions of all the tracks adjacent to the current track are the same, selecting a switching device closest to the target car, and switching the target car to one track adjacent to the current track through the selected switching device.

Before the control system switches the control target car to the target track, judging whether the joint of the track cutting track and the target track is safe or not, if so, switching the control target car to the target track, and if not, switching the control target car to the original track after waiting until the joint of the track cutting track and the target track is safe. The safety means that when the target car is switched to the target track through the track cutting track, the distance between the target car and the adjacent car is larger than the safety distance, and the unsafe means that when the target car is switched to the target track through the track cutting track, the distance between the target car and at least one adjacent car is not larger than the safety distance. In other words, the safety running of the target track cannot be affected when the target car is switched to the target track, and the distance between the target car and the adjacent car on the target track is greater than the safety distance.

In the second case, when one or more cars on one track are traveling in the main traveling direction, but are about to travel in the direction opposite to the main traveling direction, the one or more cars are set as target cars, and in the main traveling direction, there is no switching device in front of the cars. And driving at least one car which runs along the main running direction on the current track away from the current track until the main running direction of the current track is changed, and then reversely running the target car.

The car driving off the current track is: among all the cars traveling in the main traveling direction except the target car on the current track, the cars passing through the switching device are sequentially switched to another track according to the time sequence until the number of the cars traveling in the main traveling direction on the current track is smaller than the number of the cars not traveling in the main traveling direction, that is, the current track changes the main traveling direction. If all cars on the current track except the target car travel in the main travel direction, the target car travels in the reverse direction after all cars on the current track except the target car travel away from the current track.

The second case includes two cases:

first case: when one or more upward lift cars on the main upper rail are about to go down, the other upward lift cars on the rail are switched to the other rail by a switching device, and when the rail where the target lift car is located is changed from the main upper rail to the main lower rail, the target lift car reversely moves downwards on the original rail.

Second case: when one or more descending cars on the main lower track are going to go up, the other descending cars on the track are switched to the other track by the switching device, and when the track where the target car is located is changed from the main lower track to the main upper track, the target car moves upwards in the reverse direction on the original track.

The above method of operation is further illustrated by the following two examples:

example 1

As shown in fig. 1, two vertically adjacent rails of the elevator system are a first rail 1 and a second rail 2, and a switching device 3 is arranged between the first rail 1 and the second rail 2. Four adjacent hall doors of the connecting track one 1 are respectively a hall door 1A, a hall door 1B, a hall door 1C and a hall door 1D from top to bottom, and four adjacent hall doors of the connecting track two 2 are respectively a hall door 2A, a hall door 2B, a hall door 2C and a hall door 2D from top to bottom. Hall door 1A and hall door 2A are located at the same floor a, hall door 1B and hall door 2B are located at the same floor B, hall door 1C and hall door 2C are located at the same floor C, and hall door 1D and hall door 2D are located at the same floor D. The hoistway door which is connected with the first track 1 is used for entering the car on the first track 1 from the hoistway door, and the hoistway door which is connected with the second track 2 is used for entering the car on the second track 2 from the hoistway door.

The first track 1 is a main lower track, two adjacent cabs on the first track 1 are a cabin M and a cabin N respectively, the cabin M is located above the cabin N, the cabin M and the cabin N are descending, and the cabin N completes the inward calling requirement after landing and getting off at a landing at the landing door 1B, namely no passenger exists in the cabin N at the moment. At the same time, the floor A generates an uplink outbound demand, namely, the floor A has passengers to take an elevator to ascend, the car M has an inbound demand at the floor D, namely, the car M has passengers to arrive at the floor D, the car M needs to continue to descend, and the control system judges and selects the car N to respond to the uplink outbound demand. At this time, the control system controls the empty car N to continue to move down to the nearest switching device, and to move up to the landing at the hall door 2A after switching to the second track 2 by the switching device.

Example two

As shown in fig. 2, three vertically adjacent tracks in the elevator system are a track a, a track B and a track C in sequence, a first switching device 4 is arranged between the track B and the track C, a second switching device 5 is arranged between the track a and the track B, and the first switching device 4 is located below the second switching device 5. At present, the track a is a main lower track, the track B and the track C are main upper tracks, the car M on the track B is ascending and going to descend, the control system controls the car M to continue ascending along the track B, then continue ascending to reach the second switching device 5 after passing through the first switching device 4, then switch to the track a after passing through the second switching device 5, and then move downwards after reaching the track a.

Finally, what is necessary here is: the above embodiments are only for further detailed description of the technical solutions of the present invention, and should not be construed as limiting the scope of the present invention, and some insubstantial modifications and adjustments made by those skilled in the art from the above description of the present invention are all within the scope of the present invention.

Claims (9)

1. The elevator system comprises at least two vertical tracks, at least one switching device, at least two self-driven cabs which can be smoothly switched between the two tracks through the switching device, and a control system, and is characterized in that when at least one cab on one track is running along the main running direction but is going to run along the direction opposite to the main running direction, the cab is set as a target cab, the control system controls the target cab to continue running along the main running direction on the track where the target cab is located, and then the target cab is switched to the other track to run reversely after reaching the switching device closest to the target cab, or the control system controls at least one cab which is running along the main running direction except the target cab on the track where the target cab is located to run away from the current track to change the main running direction of the current track, and then the target cab runs reversely on the original track.

2. The method according to claim 1, wherein the control system receives the running direction of each car on each track in real time, calculates the number of up-going cars and the number of down-going cars on each track after receiving the running direction information of each car, defines the track as a main up-track if the number of up-going cars on one track is greater than the number of down-going cars, defines the track as a main down-track if the number of down-going cars on one track is greater than the number of up-going cars, and defines the main running direction on the main up-track as up-going and the main running direction on the main down-track as down-going.

3. The method according to claim 2, wherein if the number of up cars and the number of down cars on one track are equal, the number of other tracks than the one track in the elevator system is determined, and if the number of main upper tracks is greater than the number of main lower tracks in the other tracks, the one track is defined as the main upper track, and if the number of main lower tracks is greater than the number of main upper tracks, the one track is defined as the main lower track.

4. The method according to claim 1, wherein when at least one car on one track is traveling in a main traveling direction but is about to travel in a direction opposite to the main traveling direction, the car is set as a target car, and a switching device is provided in front of the target car in the main traveling direction, the control system controls the target car to continue traveling in the main traveling direction on the track where the target car is located, and to switch to another track for reverse traveling after reaching the switching device closest thereto.

5. The method of claim 4, wherein the target track is selected based on a main traveling direction, the main traveling direction of the target track is opposite to the main traveling direction of the current track, a switching device closest to the target car entering the target track is selected, and the control system controls the target car to enter the target track through the selected switching device.

6. The method according to claim 1, wherein when at least one car on one track is traveling in a main traveling direction but is about to travel in a direction opposite to the main traveling direction, the car is set as a target car, and in the main traveling direction, at least one car traveling in the main traveling direction on the current track is caused to travel away from the current track to change the main traveling direction of the current track without a switching device in front of the target car, and the target car is then reversed.

7. The method of claim 6, wherein the car traveling off the current track is: among all the cars traveling in the main traveling direction except the target car on the current track, the cars passing through the switching device are sequentially switched to another track according to the time sequence until the number of the cars traveling in the main traveling direction on the current track is smaller than the number of the cars not traveling in the main traveling direction.

8. The method of claim 7, wherein after all but the target car on the current track is driven in the main driving direction, the target car is reversely driven after all but the target car on the current track is driven away from the current track.

9. The method of claim 1, wherein the case where the car is traveling in the main traveling direction but is to be traveling in a direction opposite to the main traveling direction comprises: after the elevator finishes the internal calling task, the elevator generates an external calling requirement, and the control system selects the elevator to respond to the external calling requirement according to the judgment of the built-in program, wherein the running direction of the elevator to respond to the external calling requirement is opposite to the current running direction.