CN115009946B - Protection method for elevator pit maintenance and restoration - Google Patents
Protection method for elevator pit maintenance and restoration Download PDFInfo
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- CN115009946B CN115009946B CN202210692026.1A CN202210692026A CN115009946B CN 115009946 B CN115009946 B CN 115009946B CN 202210692026 A CN202210692026 A CN 202210692026A CN 115009946 B CN115009946 B CN 115009946B
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- door lock
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- 238000012423 maintenance Methods 0.000 title claims abstract description 68
- 238000000034 method Methods 0.000 title claims abstract description 27
- 238000007689 inspection Methods 0.000 claims description 10
- 238000001514 detection method Methods 0.000 abstract description 16
- 238000011156 evaluation Methods 0.000 description 5
- 230000007935 neutral effect Effects 0.000 description 2
- 241001584775 Tunga penetrans Species 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/0043—Devices enhancing safety during maintenance
- B66B5/005—Safety of maintenance personnel
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B1/00—Control systems of elevators in general
- B66B1/02—Control systems without regulation, i.e. without retroactive action
- B66B1/06—Control systems without regulation, i.e. without retroactive action electric
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- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Maintenance And Inspection Apparatuses For Elevators (AREA)
- Elevator Door Apparatuses (AREA)
Abstract
The utility model discloses a protection method for elevator pit maintenance and restoration, which comprises the hardware of a pit maintenance switch on an elevator pit maintenance operation device, an emergency stop switch entering a pit, a landing door lock switch, an elevator sound prompting device and an elevator control system; the pit maintenance switch, the emergency stop switch entering the pit, the landing door lock switch and the elevator sound prompting device are all connected with an elevator control system through signals; the protection method for pit maintenance and restoration is to increase detection of the process of leaving the pit by maintenance staff in the elevator control system, and can effectively prevent risks brought to the maintenance staff by accidental operation.
Description
Technical field:
the utility model relates to the technical field of elevators, in particular to a protection method for elevator pit maintenance and restoration.
The background technology is as follows:
when overhauling elevator pit part, the maintainer needs to get into the pit, in order to make things convenient for the maintainer to operate the elevator at the pit, GB T7588.1 has increased pit maintenance device, pit maintenance switch can only be in the pit after returning, the maintainer just can leave the pit, if the maintainer operation is not operated according to the flow, or the switch trouble, at the in-process that the maintainer left the well, the elevator can be because of in normal running state, and not in the flat bed position again, can automatic leveling layer's uncontrollable removal, has the extruded risk of bringing for the maintainer.
For this reason, chinese patent application publication No. CN214652883U discloses a base station maintenance system suitable for a bridge elevator, which includes a maintenance box body, a safety circuit installed in the maintenance box body, and a maintenance circuit, wherein the safety circuit includes a base station maintenance box emergency stop switch connected in series on a main safety module, a base station maintenance box emergency operation switch connected in parallel with a control cabinet emergency operation switch and a control cabinet neutral button, and a base station maintenance box neutral button, the maintenance circuit includes a main control board, a control cabinet uplink module and a control cabinet downlink module connected with the main control board electrically, a car top maintenance uplink module and a car top maintenance downlink module, and a base station maintenance box uplink module and a downlink module, and the emergency operation switch or a shorting hall door lock and a shorting car door lock loop in the base station maintenance box of the patent make a maintenance person take a fast and slow service to a top machine room for maintenance, thereby performing up and down maintenance.
Chinese patent grant publication number CN111115401B discloses an additional elevator safety circuit, when the safety system action switch is closed, the maintenance operation can be performed only after the upper stop action switch, the lower stop action switch and the guardrail extension switch are all in place, and when the auxiliary lower limit switch is opened, the elevator can only perform upward maintenance operation, but cannot perform downward maintenance operation, and when the auxiliary upper limit switch is opened, the elevator can only perform downward maintenance operation, but cannot perform upward maintenance operation; when the safety system reset switch is in a reset state, the normal operation can be restored after all the upper stop reset switch, the lower stop reset switch, the foot guard retraction switch and the guardrail retraction switch are in place. The elevator safety system can realize the action and reset functions of the elevator safety system without software participation, and can realize various control functions described in GB28621-2012 standard.
Chinese patent application publication No. CN114194969A discloses a method for modifying and testing a power plant boiler inspection elevator safety device. Which comprises the following steps: overload and short-circuit protection are arranged on the power supply main switch; a hydraulic buffer compression protection switch is arranged behind the electric safety switch; motor overheat protection is arranged on a motor winding; setting a limit over-travel protection switch on a car sill; a safety gear action protection switch is arranged on the upper beam of the car frame, and a limit protection switch is arranged on the former action of the buffer; an emergency electric operation device is arranged on the traction machine; and overhaul control devices are arranged in the car roof, the car and the machine room. The gain effect of the utility model is: according to the elevator inspection device, through improvement of the safety device of the elevator inspection device, various safety structures are arranged, a plurality of inter-related action modes are adopted, the action accuracy of the safety device is ensured to be pressed, the potential safety hazard of the elevator inspection device is effectively eliminated, and the operation reliability and safety of the elevator inspection device are improved.
Chinese patent grant publication number CN110316628B discloses an elevator safety system, in which an evaluation unit is connected to an absolute position sensor of a car through a first serial bus, to a car safety node through a second serial bus, and to a hoistway safety device directly through a wire harness; the car absolute position sensor sends real-time position and speed values of the car to the evaluation unit; the car safety node is connected with the car safety device through a wire harness, receives the state information of the car safety device and transmits the state information to the evaluation unit; the evaluation unit outputs a speed safety signal according to the car speed value, outputs an unexpected deceleration signal according to the car speed value and the car real-time position, and outputs an unexpected movement signal under the condition of opening the door according to the car safety device state information, the hoistway safety device state information, the car speed value and the car real-time position. The position and the speed of the car can be accurately and rapidly obtained, and an accurate evaluation result can be obtained.
The utility model patent grant publication number CN202625540U of China discloses an elevator safety loop detection system, which comprises a safety loop detection unit, wherein the safety loop detection unit is provided with at least four detection ends which are respectively connected to an elevator main control board, a car top maintenance box, a pit maintenance box and a landing door detector, wherein: the main control board is at least connected with the speed limiter, the jigger equipment and the wire pressing pliers through the detection modules respectively; the car roof maintenance box is at least connected with a safety clamp, a safety window, an emergency stop switch and a car door through detection modules respectively; the pit maintenance box is at least connected with the tensioning wheel, the upper limit switch, the lower limit switch and the buffer through the detection module, and the landing door detector is connected with the landing door lock switch through the detection device. The safety loop detection unit at least detects the elevator main control board, the car roof maintenance box, the pit maintenance box and the landing door lock switch respectively to form a unified and comprehensive detection system, and because the detection is more detailed, the safety loop detection unit can accurately judge which part fails during working and can send the failure information to the elevator control system in real time, and then the Ethernet monitoring system or the GSM remote communication system accurately sends the related failure information to the service center to enable related personnel to know in time, so that the follow-up maintenance operation can be greatly facilitated.
Chinese patent grant publication No. CN214059561U discloses an elevator control system which is convenient to overhaul, comprising: the overhaul loop comprises a short circuit plug-in unit and a first short circuit socket, and the short circuit plug-in units are arranged in the overhaul loop in series; the safety loop comprises a hall door lock, a car door lock, a second short-circuit socket, a third short-circuit socket and an alarm branch; one pin and three pins of the second short-circuit socket are respectively connected with two ends of the hall door lock, one pin and three pins of the third short-circuit socket are respectively connected with two ends of the car door lock, and four pins of the second short-circuit socket and four pins of the third short-circuit socket are electrically connected with the alarm branch; and the controller is used for controlling the overhaul loop and the safety loop. The elevator control system can work when the elevator is in an overhaul state through the short circuit plug-in unit, the first short circuit socket, the second short circuit socket and the third short circuit socket, and can give a light alarm for an overhaul worker.
None of the above patents gives a process detection of the departure of an inspector from the pit, and therefore, its safety is insufficient.
The utility model comprises the following steps:
the utility model aims to solve the technical problem that the existing elevator pit overhaul process has the risk of extrusion to overhaul personnel, and provides a protection method for elevator pit overhaul resetting. According to the protection method, the detection of the process that the additional maintainer leaves the pit in the control system can be used for effectively preventing risks brought to the maintainer by accidental operation.
In order to achieve the above object, the utility model provides a protection method for elevator pit maintenance and restoration, the hardware of which comprises a pit maintenance switch on an elevator pit maintenance operation device, an emergency stop switch entering the pit, a landing door lock switch, an elevator sound prompting device and an elevator control system; the pit maintenance switch, the emergency stop switch entering the pit, the landing door lock switch and the elevator sound prompting device are all in signal connection with the elevator control system; the method is characterized in that the protection method for pit overhaul and restoration is that the following steps are added in the elevator control system:
s1: when the pit overhaul switch is at an overhaul position and the layer door lock switch is in a closed state, detecting the duration time T1 of opening the scram switch entering the pit;
s2: when the T1 reaches a set first threshold value, the landing door lock switch is in a closed state, and the scram switch entering the pit is in an open state, detecting the duration time T2 of the pit maintenance switch at the normal position;
s3: when the T2 reaches a set second threshold value, the pit maintenance switch is at a normal position, and the scram switch entering the pit is in an off state, detecting that the layer door lock switch is in the off state for a duration time T3;
s4: when the T3 reaches a set third threshold value, and the pit maintenance switch is at a normal position, detecting the closing duration time T4 of the scram switch entering the pit under the condition that the layer door lock switch is in an off state;
s5: detecting the duration time T5 of the disconnection of the layer door lock switch after the T4 reaches a set fourth threshold value;
s6: when the T5 exceeds the set fifth threshold, detecting that the landing door lock switch is closed, and executing the step S8;
s7: when the elevator is not operated according to the requirements of the steps S1 to S6, the elevator is maintained in a maintenance state, and meanwhile, the elevator sound prompting device sends a reset error sound to finish;
s8: and the elevator exits from the maintenance operation mode, slowly moves downwards to the flat layer position, then opens the door, and ends.
In a preferred embodiment of the present utility model, the first threshold is set for not less than 2 seconds.
In a preferred embodiment of the present utility model, the second threshold is set for not less than 3 seconds.
In a preferred embodiment of the present utility model, the third threshold is set for not less than 5 seconds.
In a preferred embodiment of the present utility model, the fourth threshold is set for not less than 1 second.
In a preferred embodiment of the present utility model, the fifth threshold is set for not less than 2 seconds.
By adopting the technical scheme, the utility model can effectively prevent risks brought to the maintenance personnel by accidental operation through the detection of the process of additionally adding the maintenance personnel to leave the pit in the control system.
Detailed Description
The utility model relates to a protection method for elevator pit maintenance and restoration, which comprises the hardware of a pit maintenance switch on an elevator pit maintenance operation device, an emergency stop switch entering a pit, a landing door lock switch, an elevator sound prompting device and an elevator control system; the pit maintenance switch, the scram switch entering the pit, the landing door lock switch and the elevator sound prompting device are all connected with an elevator control system through signals; the protection method for pit overhaul and restoration comprises the following steps in the elevator control system:
s1: when the pit overhaul switch is at an overhaul position and the layer door lock switch is in a closed state, detecting the duration time T1 of opening the scram switch entering the pit;
s2: when the T1 reaches a set first threshold value, the landing door lock switch is in a closed state, and the scram switch entering the pit is in an open state, detecting the duration time T2 of the pit maintenance switch at the normal position; setting the first threshold value to be not less than 2 seconds;
s3: when the T2 reaches a set second threshold value, the pit maintenance switch is at a normal position, the scram switch entering the pit is in an off state, the duration time T3 of the door lock switch in the off state is detected, and the second threshold value is set to be not less than 3 seconds;
s4: when the T3 reaches a set third threshold value, and the pit maintenance switch is at a normal position, detecting the closing duration time T4 of the scram switch entering the pit under the condition that the layer door lock switch is in an off state; setting a third threshold value not less than 5 seconds;
s5: detecting the duration time T5 of the disconnection of the layer door lock switch after the T4 reaches a set fourth threshold value; setting the fourth threshold value to be not less than 1 second;
s6: when the T5 exceeds the set fifth threshold, detecting that the landing door lock switch is closed, and executing the step S8; setting a fifth threshold value not less than 2 seconds;
s7: when the elevator is not operated according to the requirements of the steps S1 to S6, the elevator is maintained in a maintenance state, and meanwhile, the elevator sound prompting device sends a reset error sound to finish;
s8: and the elevator exits from the maintenance operation mode, slowly moves downwards to the flat layer position, then opens the door, and ends.
The time limits of the first, second, third, fourth, and fifth thresholds are the shortest times to complete the operation, with no correlation between them.
Claims (6)
1. The hardware of the protection method for the elevator pit maintenance and restoration comprises a pit maintenance switch on an elevator pit maintenance operation device, an emergency stop switch entering the pit, a landing door lock switch, an elevator sound prompt device and an elevator control system; the pit maintenance switch, the emergency stop switch entering the pit, the landing door lock switch and the elevator sound prompting device are all in signal connection with the elevator control system; the method is characterized in that the protection method for pit overhaul and restoration is that the following steps are added in the elevator control system:
s1: when the pit overhaul switch is at an overhaul position and the layer door lock switch is in a closed state, detecting the duration time T1 of opening the scram switch entering the pit;
s2: when the T1 reaches a set first threshold value, the landing door lock switch is in a closed state, and the scram switch entering the pit is in an open state, detecting the duration time T2 of the pit maintenance switch at the normal position;
s3: when the T2 reaches a set second threshold value, the pit maintenance switch is at a normal position, and the scram switch entering the pit is in an off state, detecting that the layer door lock switch is in the off state for a duration time T3;
s4: when the T3 reaches a set third threshold value, and the pit maintenance switch is at a normal position, detecting the closing duration time T4 of the scram switch entering the pit under the condition that the layer door lock switch is in an off state;
s5: detecting the duration time T5 of the disconnection of the layer door lock switch after the T4 reaches a set fourth threshold value;
s6: when the T5 exceeds the set fifth threshold, detecting that the landing door lock switch is closed, and executing the step S8;
s7: when the elevator is not operated according to the requirements of the steps S1 to S6, the elevator is maintained in a maintenance state, and meanwhile, the elevator sound prompting device sends a reset error sound to finish;
s8: and the elevator exits from the maintenance operation mode, slowly moves downwards to the flat layer position, then opens the door, and ends.
2. A method of protecting an elevator pit inspection reset as claimed in claim 1, wherein the first threshold is set for not less than 2 seconds.
3. A method of protecting an elevator pit inspection reset as claimed in claim 1, wherein the second threshold is set for not less than 3 seconds.
4. A method of protecting an elevator pit inspection and restoration according to claim 1, wherein the third threshold is set for not less than 5 seconds.
5. A method of protecting an elevator pit inspection and restoration according to claim 1, wherein the fourth threshold is set for not less than 1 second.
6. A method of protecting an elevator pit inspection reset as claimed in claim 1, wherein the fifth threshold is set for not less than 2 seconds.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210692026.1A CN115009946B (en) | 2022-06-17 | 2022-06-17 | Protection method for elevator pit maintenance and restoration |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210692026.1A CN115009946B (en) | 2022-06-17 | 2022-06-17 | Protection method for elevator pit maintenance and restoration |
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| Publication Number | Publication Date |
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| CN115009946A CN115009946A (en) | 2022-09-06 |
| CN115009946B true CN115009946B (en) | 2024-01-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210692026.1A Active CN115009946B (en) | 2022-06-17 | 2022-06-17 | Protection method for elevator pit maintenance and restoration |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104176571A (en) * | 2014-08-19 | 2014-12-03 | 江苏蒙哥马利电梯有限公司 | Remote control switch for elevator control system |
| WO2017055420A1 (en) * | 2015-09-30 | 2017-04-06 | Inventio Ag | Method and apparatus for controlling an elevator system |
| CN107140496A (en) * | 2017-06-09 | 2017-09-08 | 快意电梯股份有限公司 | Vertical lift pit overhaul resetting means |
| WO2019063406A1 (en) * | 2017-09-27 | 2019-04-04 | Inventio Ag | Safe access to elevator shaft |
| CN111532920A (en) * | 2020-05-07 | 2020-08-14 | 永大电梯设备（中国）有限公司 | Protection system for elevator maintenance personnel and elevator |
| CN112456267A (en) * | 2020-11-23 | 2021-03-09 | 深圳市海浦蒙特科技有限公司 | Electrical safety detection control circuit for elevator maintenance operation |
| CN113135477A (en) * | 2020-01-20 | 2021-07-20 | 奥的斯电梯公司 | Guidance of safety check operation of functional components of an elevator system |
-
2022
- 2022-06-17 CN CN202210692026.1A patent/CN115009946B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104176571A (en) * | 2014-08-19 | 2014-12-03 | 江苏蒙哥马利电梯有限公司 | Remote control switch for elevator control system |
| WO2017055420A1 (en) * | 2015-09-30 | 2017-04-06 | Inventio Ag | Method and apparatus for controlling an elevator system |
| CN107140496A (en) * | 2017-06-09 | 2017-09-08 | 快意电梯股份有限公司 | Vertical lift pit overhaul resetting means |
| WO2019063406A1 (en) * | 2017-09-27 | 2019-04-04 | Inventio Ag | Safe access to elevator shaft |
| CN113135477A (en) * | 2020-01-20 | 2021-07-20 | 奥的斯电梯公司 | Guidance of safety check operation of functional components of an elevator system |
| CN111532920A (en) * | 2020-05-07 | 2020-08-14 | 永大电梯设备（中国）有限公司 | Protection system for elevator maintenance personnel and elevator |
| CN112456267A (en) * | 2020-11-23 | 2021-03-09 | 深圳市海浦蒙特科技有限公司 | Electrical safety detection control circuit for elevator maintenance operation |
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| CN115009946A (en) | 2022-09-06 |
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