Elevator safety circuit switch online detection system construction method

Abstract

The invention discloses an elevator safety circuit switch online detection system construction method, which comprises the following steps of: adding a bottom address code identification plate in an elevator shaft pit; a speed limiter tensioning switch, a buffer switch, a compensation device word loop switch, a counterweight buffer switch and a lower forced limit switch of a pit are in one-to-one correspondence with a bottom address code identification board through a first online detection isolation circuit, and the bottom address code identification board transmits related data to a main control board through a bus; a top address code recognition plate is added on the top layer of an elevator shaft, and a high platform emergency stop switch, a turning switch, a phase sequence detection switch, an ARD emergency cabinet, a control cabinet, a rope breakage protection switch, a speed governor switch, an upper forced limit switch and a rope gripper switch on the top layer are in one-to-one correspondence with the top address code recognition plate through a second online detection isolation circuit. And the top address code identification board transmits related data to the main control board through a bus. Fault judgment of the safety circuit of the elevator can be achieved, and conditions are created for achieving intelligence of the elevator.

Description

Technical Field

[0001] The present invention relates to the technical field of elevator safety, and in particular to a method for constructing an online detection system for an elevator safety circuit switch. Background Art

[0002] The safe operation of elevators has always been a technical problem that has troubled elevator manufacturers. Since the advent of elevators, efforts have been made on safety circuits, but no good results have been achieved. Due to the high humidity in the elevator shaft, the control switch has been repeatedly upgraded from the original protection level, but it still cannot fundamentally solve the problem of elevator contact corrosion and increased contact resistance, especially for floor door switches. The floor doors are often moved, the floor door switches are worn, the contacts are burned, and the elevators are prone to failure, resulting in a waste of manpower and material resources. The cause of the failure is difficult to determine, especially at high levels. Summary of the invention

[0003] The purpose of the present invention is to overcome the deficiencies of the prior art and to provide a method for constructing an elevator safety circuit switch online detection system, through which the elevator safety circuit switch online detection system can realize elevator safety circuit fault judgment.

[0004] The technical solution of the present invention is as follows:

[0005] A method for constructing an online detection system for elevator safety circuit switches comprises the following steps: adding a bottom address code recognition board to the bottom pit of an elevator shaft, making the speed limiter tension switch, buffer switch, compensation device word circuit switch, counterweight buffer switch, and lower forced limit switch of the bottom pit correspond to the bottom address code recognition board one by one through a first online detection isolation circuit, and the bottom address code recognition board transmits relevant data to a main control board through a bus; adding a top address code recognition board to the top floor of the elevator shaft, making the high platform emergency stop switch, turning switch, phase sequence detection switch, ARD emergency cabinet, control cabinet, rope breaking protection switch, speed limiter switch, upper forced limit switch, and rope clamp switch of the top floor correspond to the top address code recognition board one by one through a second online detection isolation circuit, and the top address code recognition board transmits relevant data to the main control board through a bus.

[0006] Furthermore, a first intermediate relay is connected in series between the speed limiter tensioning switch, the buffer switch, the compensation device loop switch, the counterweight buffer switch, the lower forced limit switch and the first online detection isolation circuit.

[0007] Furthermore, the operating current of the first intermediate relay is 40-60 mA.

[0008] Furthermore, a second intermediate relay is connected in series between the high platform emergency stop switch, turning switch, phase sequence detection switch, ARD emergency cabinet, control cabinet, rope break protection switch, speed limiter switch, upper forced limit switch, rope clamp switch and the second online detection isolation circuit.

[0009] Furthermore, the operating current of the second intermediate relay is 40-60 mA.

[0010] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention adds a bottom address code recognition board to the bottom pit of the elevator shaft, and the speed limiter tension switch, buffer switch, compensation device word loop switch, counterweight buffer switch, and lower forced limit switch of the bottom pit are matched one by one with the bottom address code recognition board through the first online detection isolation circuit, and then the relevant data is transmitted to the main control board through the bus; similarly, a top address code recognition board is added to the top floor of the elevator shaft, and the high platform emergency stop switch, turning switch, phase sequence detection switch, ARD emergency cabinet, control cabinet, rope break protection switch, speed limiter switch, upper forced limit switch, and rope clamp switch of the top floor are matched one by one with the top address code recognition board through the second online detection isolation circuit, and then the relevant data is transmitted to the main control board through the bus. By constructing the elevator safety circuit switch online detection system, during the operation of the elevator, no matter what kind of fault occurs in the elevator, the maintenance personnel can be notified through the server, and the maintenance personnel have arrived at the scene without the customer's knowledge; at the same time, it can reduce the maintenance and operation costs of the elevator, has advanced fault diagnosis capabilities, and intervenes in advance without expanding the fault; every switch on the elevator safety circuit is under the supervision of the microprocessor, making the elevator more intelligent and more environmentally friendly. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0012] Figure 1 It is the system framework of the present invention. DETAILED DESCRIPTION

[0013] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0014] In order to illustrate the technical solution of the present invention, a specific embodiment is provided below for illustration.

[0015] Example

[0016] See also Figure 1This embodiment provides a method for constructing an online detection system for switches in an elevator safety circuit. A bottom address code recognition board is added to the bottom pit of the elevator shaft. The speed limiter tension switch, buffer switch, compensation device word circuit switch, counterweight buffer switch, and lower forced limit switch in the bottom pit are matched to the bottom address code recognition board through the first online detection isolation circuit. The bottom address code recognition board then transmits the relevant data to the main control board through the bus. A top address code recognition board is added to the top floor of the elevator shaft. The high platform emergency stop switch, turning switch, phase sequence detection switch, ARD emergency cabinet, control cabinet, rope breaking protection switch, speed limiter switch, upper forced limit switch, and rope clamp switch on the top floor are matched to the top address code recognition board through the second online detection isolation circuit. The top address code recognition board then transmits the relevant data to the main control board through the bus. By combining all switches on the elevator safety circuit with bus communication, each switch on the elevator safety circuit is under the supervision of the microprocessor, making the elevator more intelligent and more environmentally friendly.

[0017] advantage:

[0018] 1. When the elevator is in operation (including standby mode), no matter what kind of fault occurs, the maintenance personnel can be notified through the server, and the maintenance personnel have arrived at the scene without the customer's knowledge;

[0019] 2. It can reduce the maintenance and operation costs of elevators, has advanced fault judgment capabilities, and intervenes in advance without expanding the fault;

[0020] 3. Various switch detections create conditions for the intelligentization of elevators.

[0021] Preferably, since the working voltage of the elevator safety circuit works at the industrial frequency sine wave of 110 volts, a first intermediate relay is connected in series between the speed limiter tension switch, the buffer switch, the compensation device word circuit switch, the counterweight buffer switch, the lower forced limit switch and the first online detection isolation circuit, and a second intermediate relay is connected in series between the high platform emergency stop switch, the turning switch, the phase sequence detection switch, the ARD emergency cabinet, the control cabinet, the rope breaking protection switch, the speed limiter switch, the upper forced limit switch, the rope clamp switch and the second online detection isolation circuit. The working current of the first intermediate relay and the second intermediate relay is 40-60mA, so that each switch contact will have a current of 40-60mA, to ensure no false alarm, and to accurately judge the operating state and contact resistance of the switch, especially when the high-rise line is long and the loss is large, the intermediate relay may not act. For this reason, the main control board should judge whether there is a problem with the safety circuit according to the on-site conditions. If the safety circuit is normal, the elevator may be forced to work to ensure the normal operation of the elevator.

[0022] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A method for constructing an online detection system for an elevator safety circuit switch, characterized in that: A bottom address code recognition board is added to the bottom pit of the elevator shaft, and the speed limiter tension switch, buffer switch, compensation device word loop switch, counterweight buffer switch, and lower forced limit switch of the pit are matched one by one with the bottom address code recognition board through the first online detection isolation circuit, and the bottom address code recognition board then transmits the relevant data to the main control board through the bus; a top address code recognition board is added to the top floor of the elevator shaft, and the high platform emergency stop switch, turning switch, phase sequence detection switch, ARD emergency cabinet, control cabinet, rope break protection switch, speed limiter switch, upper forced limit switch, and rope clamp switch of the top floor are matched one by one with the top address code recognition board through the second online detection isolation circuit, and the top address code recognition board then transmits the relevant data to the main control board through the bus.

2. The method for constructing an elevator safety circuit switch online detection system according to claim 1, characterized in that: A first intermediate relay is respectively connected in series between the speed limiter tension switch, the buffer switch, the compensation device loop switch, the counterweight buffer switch, the lower forced limit switch and the first online detection isolation circuit.

3. The method for constructing an elevator safety circuit switch online detection system according to claim 2, characterized in that: The working current of the first intermediate relay is 40-60 mA.

4. The method for constructing an elevator safety circuit switch online detection system according to claim 1, characterized in that: A second intermediate relay is connected in series between the high platform emergency stop switch, turning switch, phase sequence detection switch, ARD emergency cabinet, control cabinet, rope break protection switch, speed limiter switch, upper forced limit switch, rope clamp switch and the second online detection isolation circuit.

5. The method for constructing an elevator safety circuit switch online detection system according to claim 4, characterized in that: The working current of the second intermediate relay is 40-60 mA.

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