CN115535801A - Multi-car intelligent parallel elevator car roof safety protection method - Google Patents

Abstract

The invention provides a multi-car intelligent parallel elevator car top safety protection method, wherein an elevator comprises a car, tracks, a driving system and a control system, the driving system drives the car to run along the tracks, the tracks in different shafts are connected through switching tracks, the car switches between different tracks through the switching tracks, when the car passes through the switching tracks, the driving system rotates relative to the car, the elevator also comprises guardrails for limiting positions of maintainers, the guardrails can stretch or move in a direction vertical to the tracks, and when the control system detects that the guardrails are positioned at positions interfering the rotation of the driving system, the control system controls the car not to pass through the switching tracks. The elevator car without the traction steel wire rope needs to switch operation on different tracks, and the method can ensure personnel safety and equipment safety when the maintainers overhaul the car top, is comprehensive in overhaul, and simultaneously ensures that the guardrails do not interfere with the operation of the car and damage the structure of the elevator.

Description

Safety protection method for multi-car intelligent parallel elevator car top

technical field

The invention belongs to the technical field of elevators, in particular to a safety protection method for car tops of multi-car intelligent parallel elevators.

Background technique

In modern social and economic activities, elevators have become an indispensable means of vertical transportation for people or goods. Since the invention of the elevator in 1854, the elevator car has been driven by wire rope pulleys. By setting up the machine room, traction motor and deceleration device on the top floor of the building, the wire rope is driven to pull the car and the counterweight on the track in the hoistway. run. This driving method makes it possible to run only one car in a single well, and the elevator in the single-car operation mode can still meet the use requirements in low-rise buildings and floors with small passenger flow. With the rapid development of modern cities, high-rise buildings and super high-rise buildings with large population density have sprung up, and the shortcomings of single-car operation mode elevators, such as long waiting time and low transportation efficiency, have been continuously magnified. The operation mode of the car elevator has been difficult to meet the needs of the rapid development of modern urban buildings.

In order to improve the utilization rate of building space and the efficiency of elevator transportation, and reduce the cost of construction and elevators, with the continuous development of engineering technology, a multi-car parallel elevator is being developed and applied. The multi-car parallel elevator adopts the non-traction wire rope direct drive technology, which realizes the simultaneous operation of multiple elevator cars in the same shaft, and the elevators between each shaft can switch to each other for shaft operation to achieve overtaking operation.

For the elevator system involved in the applicant's patent application No. PCT/CN2020/105758 and other patent applications, the car is driven by the drive system to run along the track. During maintenance, maintenance personnel often need to climb to the top of the car. However, the drive system is connected to the upper part of the suspension, and the drive system is located above the car roof. When the car performs track switching, the drive system and the car will rotate relative to each other, and the moving parts will affect the safety of the car roof maintenance personnel.

Contents of the invention

In view of the above-mentioned problems existing in the prior art, the object of the present invention is to provide a safety protection method for the car roof of a multi-car intelligent parallel elevator. The above method can ensure the safety of personnel and equipment when the maintenance personnel perform maintenance on the car top, the maintenance is comprehensive, and at the same time, it can be ensured that the guardrail will not interfere with the operation of the car and damage the structure of the elevator.

In order to achieve the above object, the technical solution adopted in the present invention is:

The multi-car intelligent parallel elevator car top safety protection method, the elevator includes a car, a track, a drive system and a control system, the drive system drives the car to run along the track, the tracks in different shafts are connected by switching tracks, and the car passes through The switching track is switched between different tracks. When the car passes through the switching track, the drive system rotates relative to the car. The elevator also includes a guardrail that limits the position of the maintenance personnel. The guardrail can be extended or retracted in the direction perpendicular to the track. When the control system detects that the guardrail is at a position that interferes with the rotation of the drive system and/or that the drive system can injure maintenance personnel, the control system controls the car to not pass through the switching track.

As a further improvement of the above technical solution:

When the control system detects that the guardrail is at the rotation position of the interference drive system, the guardrail is adjusted before the car enters the switching track. After the control system detects that the guardrail is not at the rotation position of the interference drive system, the control system then controls the car to enter the switching track. track.

When the control system detects that the guardrail is not in a position that interferes with the rotation of the drive system, the control system controls the car to run.

When the control system detects that the guardrail is at a position that interferes with the rotation of the drive system and the car is running on the track, the control system controls the car to stop running.

When the control system detects that the guardrail is at a position that interferes with the rotation of the drive system and the car is running on the track, the control system controls the car to run normally.

The elevator also includes a monitoring switch for monitoring whether the guardrail is located in the rotation area of the interference drive system, the monitoring switch is electrically connected to the control system, and the monitoring switch sends the monitored information to the control system.

When it is necessary to enter the car top for maintenance, and the guardrail is located at a position that does not interfere with the rotation of the drive system to complete the maintenance, the maintenance personnel can perform maintenance operations and maintenance operations.

When it is necessary to enter the car top for maintenance, and the car needs to enter the switching track, and the guardrail needs to be located at a position that interferes with the rotation of the drive system to complete the maintenance, the car cannot run on the switching track.

When it is necessary to enter the car top for maintenance, and the car needs to be on the track and the guardrail needs to be at a position that interferes with the rotation of the drive system to complete the maintenance, the car can perform maintenance operations.

The beneficial effects of the present invention are: for the elevator car that needs to be switched on different tracks and has no traction wire rope, the method can ensure the safety of personnel and equipment when the maintenance personnel perform maintenance on the car top, and the maintenance is comprehensive. At the same time, ensure that the guardrail will not interfere with the operation of the car and damage the structure of the elevator.

Description of drawings

Fig. 1 is a schematic diagram of a passing track according to an embodiment of the present invention.

Fig. 2 is a schematic diagram of switching tracks according to an embodiment of the present invention.

Fig. 3 is a schematic diagram of the guardrail in the rotation position of the interference drive system according to an embodiment of the present invention.

Fig. 4 is a schematic diagram of a guardrail in an embodiment of the present invention at a position not interfering with the rotation of the drive system.

detailed description

Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

For the convenience of description, spatially relative terms may be used here, such as "on ...", "over ...", "on the surface of ...", "above", etc., to describe the The spatial positional relationship between one device or feature shown and other devices or features. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, devices described as "above" or "above" other devices or configurations would then be oriented "beneath" or "above" the other devices or configurations. under other devices or configurations". Thus, the exemplary term "above" can encompass both an orientation of "above" and "beneath". The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptions used herein interpreted accordingly.

The multi-car intelligent parallel elevator car top safety protection method, the elevator includes a car 3, a track 2, a drive system 1, a control system, a guardrail 4, a suspension 5, and a monitoring switch, and the drive system 1 is connected to the upper part of the suspension 5 , the driving system 1 drives the car 3 to run along the track 2, the tracks 2 in different hoistways are connected by switching tracks, the car 3 switches between different tracks 2 through the switching track, when the car 3 passes through the switching track , the drive system 1 rotates relative to the car 3 .

The guardrail 4 is located at the top of the car 3, one end of the guardrail 4 is connected to the top of the car 3, and the other end hangs upwards. Guardrail 4 forms a circle, and the side of guardrail 4 near hall door is provided with the opening of going in and out of the car top, and guardrail 4 surrounds an area of car top. Wherein, hall door is landing door, is the door that is installed on the hoistway, is used in conjunction with car door (the door that is installed on the car 3 that enters and exits car 3), and the people enters car top by hall door and carries out maintenance.

The guardrail 4 is used to limit the position of the maintenance personnel. The maintenance personnel can only be located in the guardrail 4 during maintenance. When the maintenance personnel are located in the guardrail 4, the guardrail 4 isolates the maintenance personnel from the drive system 1 and other relatively moving parts of the hoistway. Prevent moving parts such as the drive system 1 from causing injury to maintenance personnel.

According to GB7588-2003 "Elevator Manufacture and Installation Safety Code", the greater the distance between the car top and the well wall, the higher the height of the required guardrail 4. However, the higher the guardrail 4 is, the easier it is to interfere with the rotation of the drive system 1 . If in order to avoid guardrail 4 from interfering with the rotation of drive system 1, guardrail 4 is arranged on the area away from track 2 on the car top, then the area between track 2 and guardrail 4 or the area below drive system 1 cannot be overhauled.

In order to overcome the above problems, preferably, the guardrail 4 is set to be telescopic or movable, and the telescopic or moving direction is perpendicular to the track 2 . Within the telescopic or moving range of the guardrail 4, the maintenance personnel who are positioned in the guardrail 4 can carry out comprehensive maintenance to the car top area. When the guardrail 4 stretches or moves to the first limit position, the guardrail 4 will interfere with the rotation of the drive system 1; when the guardrail 4 stretches or moves to the second limit position, the guardrail 4 will not interfere with the rotation of the drive system 1. There is an interference critical position between the first limit position and the second limit position, and when the guardrail 4 reaches the interference critical position from the area where it does not interfere with the rotation of the drive system 1 , it will interfere with the rotation of the drive system 1 . The first limit position and the interference critical position may be the same position.

It should be noted that the position where the guardrail 4 does not interfere with the rotation of the drive system 1 means that the body of the guardrail 4 and the personnel in the guardrail 4 are located at a position where the drive system 1 does not interfere with the rotation. 1 rotates, the drive system 1 and other movable parts will not injure maintenance personnel, and the guardrail 4 and personnel will not interfere with the movement of the drive system 1 and other movable parts.

The monitoring switch can monitor whether the guardrail 4 is located in the area where the drive system 1 rotates. Specifically, when the guardrail 4 reaches the critical position of interference from the area where the drive system 1 does not rotate, the monitoring switch will monitor the information of the guardrail 4 and will monitor the information is sent to the control system.

The monitoring switch can also monitor whether the guardrail 4 reaches the first limit position or the second limit position, or additionally set two position switches for monitoring whether the guardrail 4 reaches the first limit position or the second limit position respectively. That is, the switches or sensors for monitoring the position of the guardrail 4 can be flexibly set.

The stretching or moving mode of guardrail 4 is not limited.

In this embodiment, the guardrail 4 is scalable. Specifically, in the direction perpendicular to the track 2, the end of the guardrail 4 away from the track 2 is fixed on the top of the car 3, and the end close to the track 2 can move along the direction perpendicular to the track 2, as shown in Figure 4 F As shown, the guardrail 4 is realized to expand and contract in the direction perpendicular to the track 2.

Based on the above structure, the safety protection method is:

1) When the control system detects that the guardrail 4 is not at a position that interferes with the rotation of the drive system 1, the control system controls the car 3 to run.

At this time, when the maintenance personnel are not in the guardrail 4 on the car top, the car 3 runs normally; when the maintenance personnel are in the guardrail 4 on the car top, the car 3 runs for maintenance. The inspection operation refers to the elevator running at the inspection speed during inspection in order to inspect the elevator and check the elevator fault.

2) When the control system detects that the guardrail 4 is located at the position where the interference drive system 1 rotates, the control system controls the car 3 not to pass through the switching track, and before the car 3 enters the switching track, first adjust the guardrail 4 so that the control system detects After guardrail 4 is not positioned at the position that interference drive system 1 rotates, control system controls car 3 to enter switching track again. Specifically, it includes the following situations:

a. When the control system detects that the guardrail 4 is located at the position where the interfering drive system 1 rotates, and the car 3 runs on the track 2, the control system controls the normal operation of the car 3. At this time, the guardrail 4 can be adjusted or not;

b. When the control system detects that the guardrail 4 is located at the position where the interference drive system 1 rotates, and the car 3 runs on the track 2, the control system controls the car 3 to stop and adjusts the guardrail 4;

Based on the above solution, when the guardrail 4 does not interfere with the rotation of the drive system 1 and does not need to enter the car top for maintenance, the elevator can run normally.

When it is necessary to enter the car top for maintenance, and the guardrail 4 is located at a position that does not interfere with the rotation of the drive system 1, the maintenance can be completed, no matter whether the car 3 is located on the track 2 or on the switching track, the maintenance personnel can perform maintenance operations and maintenance operations. That is, it is not necessary to stop the car 3 for shutdown inspection. At this time, the guardrail 4 can effectively isolate the moving parts such as the drive system 1 to prevent personnel from approaching and ensure maintenance safety.

When it is necessary to enter the car top for maintenance, and the car 3 needs to enter the switching track, and the guardrail 4 needs to be located at the position where the interference drive system 1 rotates to complete the maintenance, the car 3 cannot run on the switching track, and can only stop running. The maintenance operation of the elevator prevents the driving system 1 from interfering with the guardrail 4 when the car 3 enters the switching track, prevents the driving system 1 and other moving parts from hurting the maintenance personnel, and at the same time ensures the safety of maintenance.

When it is necessary to enter the car top for maintenance, and the car 3 does not enter the switching track but is on the track 2 and the guardrail 4 is located at a position that interferes with the rotation of the drive system 1 to complete the maintenance, the car 3 can perform maintenance operations and maintenance operations. When the car 3 runs on the track 2, the drive system 1 will not rotate relative to the guardrail 4, so whether the guardrail 4 is in a position that interferes with the rotation of the drive system 1 will not affect maintenance personnel and the drive system 1.

Finally, it is necessary to explain here that: the above examples are only used to further describe the technical solutions of the present invention in detail, and cannot be interpreted as limiting the protection scope of the present invention. Non-essential improvements and adjustments all belong to the protection scope of the present invention.

Claims (9)

1. A safety protection method for the car top of a multi-car intelligent parallel elevator, the elevator includes a car (3), a track (2), a drive system (1) and a control system, and the drive system (1) drives the car (3) along the run along the track (2), the tracks (2) in different hoistways are connected by switching tracks, the car (3) switches between different tracks (2) through the switching track, when the car (3) passes through the switching track , the drive system (1) rotates relative to the car (3), and the feature is that the elevator also includes a guardrail (4) that limits the position of the maintenance personnel, and the guardrail (4) can be stretched in the direction perpendicular to the track (2) Or move, when the control system detects that the guardrail (4) is located at a position that interferes with the rotation of the drive system (1), the control system controls the car (3) to not pass through the switching track. 2. The car top safety protection method according to claim 1, characterized in that: when the control system detects that the guardrail (4) is at a position that interferes with the rotation of the drive system (1), before the car (3) enters the switching track , first adjust the guardrail (4), after the control system detects that the guardrail (4) is not in the position where the interference drive system (1) rotates, the control system controls the car (3) to enter the switching track. 3. The car top safety protection method according to claim 1, characterized in that: when the control system detects that the guardrail (4) is not at a position that interferes with the rotation of the drive system (1), the control system controls the car (3) to run . 4. The car top safety protection method according to claim 1, characterized in that: when the control system detects that the guardrail (4) is located at a position where the interference drive system (1) rotates, and the car (3) runs on the track (2 ) when going up, the control system controls the car (3) to stop running. 5. The car top safety protection method according to claim 1, characterized in that: when the control system detects that the guardrail (4) is located at the position where the interference drive system (1) rotates, and the car (3) runs on the track (2 ) when going up, the control system controls the car (3) to run normally. 6. The car top safety protection method according to claim 1, characterized in that: said elevator also includes a monitoring switch for monitoring whether the guardrail (4) is located in the rotation area of the interference drive system (1), said monitoring switch and The control system is electrically connected, and the monitoring switch sends the monitored information to the control system. 7. The car top safety protection method according to claim 1, characterized in that: when it is necessary to enter the car top for maintenance and the guardrail (4) is located at a position that does not interfere with the rotation of the drive system (1) to complete the maintenance, the maintenance personnel Inspection runs and inspection operations are possible. 8. The car top safety protection method according to claim 1, characterized in that: when it is necessary to enter the car top for maintenance, and the car (3) needs to enter the switching track, the guardrail (4) needs to be located in the interference drive system (1) to rotate When the position of just can finish overhaul, car (3) can not run on switching track. 9. The car top safety protection method according to claim 1, characterized in that: when it is necessary to enter the car top for maintenance, and the car (3) needs to be on the track (2), and the guardrail (4) needs to be located on the interference drive system ( 1) The car (3) can carry out maintenance operation when the position of rotation can be completed.

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