CN109081207B - Electrical system of vertical elevator with shallow pit - Google Patents
Electrical system of vertical elevator with shallow pit Download PDFInfo
- Publication number
- CN109081207B CN109081207B CN201811286451.0A CN201811286451A CN109081207B CN 109081207 B CN109081207 B CN 109081207B CN 201811286451 A CN201811286451 A CN 201811286451A CN 109081207 B CN109081207 B CN 109081207B
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- 238000012423 maintenance Methods 0.000 claims abstract description 38
- 230000001960 triggered effect Effects 0.000 claims abstract description 15
- 238000001514 detection method Methods 0.000 claims description 18
- 238000005452 bending Methods 0.000 claims description 15
- 230000001174 ascending effect Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000003044 adaptive effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Classifications
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B1/00—Control systems of elevators in general
- B66B1/34—Details, e.g. call counting devices, data transmission from car to control system, devices giving information to the control system
- B66B1/3415—Control system configuration and the data transmission or communication within the control system
- B66B1/3423—Control system configuration, i.e. lay-out
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- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Computer Networks & Wireless Communication (AREA)
- Maintenance And Inspection Apparatuses For Elevators (AREA)
- Elevator Door Apparatuses (AREA)
Abstract
The application discloses an electric system of a shallow pit vertical elevator, which comprises an elevator safety loop, wherein an elevator maintenance unit and an elevator control unit are connected in series in the elevator safety loop; the overhaul unit is internally provided with a plurality of parallel connection: an ERO branch circuit which is conducted after the emergency electric operation switch is closed; the overhaul switch branch is conducted under the state that the pit hall door is closed and the vertical rod in the pit is bent; a TCI branch circuit which is conducted when the car top maintenance switch is closed and the vertical rod in the pit is in an upright state; the elevator control unit has in parallel: a limit switch branch connected with a normally closed additional limit switch, and triggered to be disconnected by the descending of the lift car to a first limit position; and the upward movement enabling combined branch is conducted according to the states of the emergency electric operation switch and the car roof maintenance switch, and the upward movement of the elevator car is controlled. The application is mainly used for the vertical elevator with the shallow pit, and meets the standard requirement of the elevator with the shallow pit through the safety component switch of the pit, the electric loop of the pit and the design in the safety loop.
Description
Technical Field
The application relates to the technical field of elevators, in particular to an electric system of a shallow pit vertical elevator.
Background
According to the regulations of safety of elevator manufacture and installation, when an elevator car fully presses a buffer, the distance between the car bottom and the well bottom is not less than 0.5m, calculated by the lowest part of the current car bottom, when the elevator is 1m/s, the pit depth is about 1.5m, but in some old cells at present, the pit depth cannot meet the requirements due to factors such as underground pipelines of buildings, and therefore the elevator specification requirements cannot be met.
Disclosure of Invention
Aiming at the defects of the prior art, the application aims to provide a shallow pit electric system when the pit depth does not meet the standard requirement of an elevator, which can ensure that an operator has enough safety space in pit operation under the condition of insufficient pit depth and prevent dangerous accidents.
An electric system of a shallow pit vertical elevator comprises an elevator safety loop, wherein an elevator maintenance unit and an elevator control unit are connected in series in the elevator safety loop;
the overhaul unit is internally provided with a plurality of parallel connection:
an ERO branch circuit which is conducted after the emergency electric operation switch is closed;
the overhaul switch branch is conducted under the state that the pit hall door is closed and the vertical rod in the pit is bent;
a TCI branch circuit which is conducted when the car top maintenance switch is closed and the vertical rod in the pit is in an upright state;
the elevator control unit has in parallel:
a limit switch branch connected with a normally closed additional limit switch, and triggered to be disconnected by the descending of the lift car to a first limit position;
and the upward movement enabling combined branch is conducted according to the states of the emergency electric operation switch and the car roof maintenance switch, and the upward movement of the elevator car is controlled.
In the technical scheme, a pit hall door is opened, a bent upright rod in the pit is erected, a maintenance switch branch is disconnected, so that an elevator safety loop is disconnected, and the elevator cannot normally run; after the car roof maintenance switch is closed, car roof maintenance can be performed.
When the pit works, an ERO branch is conducted, the elevator can move upwards, but can not move downwards, the pit upright rod must be erected, and an additional limit switch is arranged, so that when the additional limit switch is triggered, the safety loop is disconnected, and the safety loop must be conducted by ascending an enabling combined branch, so that the safety is improved.
Preferably, in the overhaul switch branch, a pit door lock switch triggered by a pit hall door is connected in series with a pit bending switch triggered by an upright rod in the pit in a bending state; when the elevator normally operates, the overhaul switch branch is in a conducting state, and the safety loop is conducted.
Preferably, in the TCI branch, a pit vertical rod switch triggered by a vertical rod in the pit in an upright state is connected in series with the car top maintenance switch. The car top maintenance switch and the touch pit vertical rod switch are operated, the safety loop is conducted, and car top maintenance can be performed.
Preferably, a downlink signal detection branch which is connected with the elevator safety loop and sends out a signal when the elevator descends is arranged;
in the descending signal detection branch, a detection limit switch which detects that the car descends to a second limit position and is normally closed is connected with the pit vertical rod switch in series.
And after the downlink signal detection branch is conducted, a signal is sent out when the elevator goes down.
Preferably, the height of the first limit position in the pit is lower than the height of the second limit position. After the detection limit switch at the second limit position is triggered, the downlink signal detection branch is disconnected, the downlink signal is not sent any more, and only the elevator can be controlled to go upwards.
Preferably, the upward-running combined branch consists of a parallel elevator car top calling upward branch, a control cabinet calling upward branch and an out-hall calling upward branch;
the elevator car roof calling uplink branch is internally provided with a car roof uplink button, a public terminal button and a car roof maintenance switch which are connected in series;
a normally closed car roof maintenance switch and a normally closed emergency electric operation switch are connected in series in the control cabinet calling uplink branch;
the hall call up branch is connected with a hall up button, an emergency electric running switch and a normally closed car top maintenance switch in series.
The control cabinet calls the ascending branch with higher priority, when the elevator normally operates, the additional limit switch is triggered to be disconnected, and the safety loop can be conducted through the normally closed car top maintenance switch and the normally closed emergency electric operation switch, so that the elevator can control ascending.
If an operator overhauls the pit, the additional limit switch is triggered to disconnect the safety loop, and the ascending must be performed by switching on the elevator car roof calling ascending branch and the hall outside calling ascending branch. When the car roof overhauls, the car roof overhauling switch is closed, and the car roof calling uplink branch is conducted by simultaneously operating the car roof uplink button and the public terminal button.
If no operator is on the car roof, the operator can operate the emergency electric operation switch in the control cabinet, so that the emergency electric operation switch is closed, an ERO branch is conducted, an out-hall uplink button is pressed, and an out-hall calling uplink branch is conducted, so that an elevator safety loop is conducted, and the elevator can be controlled to go up outside the hall.
Preferably, the electrical system further comprises a signal lamp control loop and a signal lamp indication loop;
the signal lamp control loop is internally composed of a pit door lock switch, a pit upright rod switch, a first relay and a second relay, wherein a coil of the first relay is connected with a normally closed pit door lock switch in series to form a first branch, a coil of the second relay is connected with a normally open pit upright rod switch in series to form a second branch, and the first branch and the second branch are connected in parallel in the signal lamp control loop.
Preferably, the signal lamp indication loop comprises a first red lamp indication branch, a second red lamp indication branch and a green lamp indication branch which are connected in parallel;
the normally closed contacts of the first relay and the second relay are connected in series with the red indicator lamp to form a first red lamp indication branch;
the pit bending switch, the normally closed contact of the second relay and the red indicator lamp are connected in series to form a second red lamp indication branch;
the normally open contact of the second relay is connected with the green indicator lamp in series to form a green light indication branch.
According to the application, the two relays and the switch with the adaptive state of the pit upright rod are utilized to indicate whether the current elevator can safely run or not, so that the safety of the elevator during overhaul is improved.
Preferably, the electric system further comprises a pit door lock switch reset branch formed by connecting a reset electromagnet and a pit door lock switch in series, wherein the reset electromagnet is triggered by a key of the pit hall door lock to drive the pit door lock switch to reset.
The application is mainly used for the vertical elevator with the shallow pit, and meets the standard requirement of the elevator with the shallow pit through the safety component switch of the pit, the electric loop of the pit and the design in the safety loop.
Drawings
Fig. 1 is a schematic circuit diagram of an electrical system of a shallow pit vertical elevator of the present application;
fig. 2 is a schematic diagram of a signal control loop and a signal indication loop.
In the figure: 100. an elevator maintenance unit; 101. an ERO branch; 102. overhauling a switch branch; 103. a TCI branch; 200. an elevator control unit; 201. a limit switch branch; 202. an uplink enabling combined branch; 203. the control cabinet calls an uplink branch; 204. calling an uplink branch outside the hall; 205. calling an uplink branch by a car roof; 300. a downlink signal detection branch; 400. a signal lamp control loop; 500. a signal lamp indication loop; 600. a pit door lock switch reset branch; 700. resetting the electromagnet.
Detailed Description
In order to make the objects, technical solutions and advantageous technical effects of the present application more apparent, the present application will be further described in detail with reference to the accompanying drawings and detailed description. It should be understood that the detailed description is intended to illustrate the application, and not to limit the application.
The electric system of the shallow pit vertical elevator shown in fig. 1 and 2 includes an elevator safety circuit in which an elevator service unit 100 and an elevator control unit 200 are connected in series.
The elevator overhauling unit is a combined branch circuit which enters the pit to overhaul the elevator and comprises an ERO branch circuit 101, an overhauling switch branch circuit 102 and a TCI branch circuit 103 which are connected in parallel, and after any branch circuit is conducted, the elevator can be guaranteed to safely run.
The ERO branch 101 is controlled by an emergency electric operating switch ERO of the elevator, and after the emergency electric operating switch ERO is closed, the ERO branch 101 is turned on.
The overhaul switch branch 102 is controlled by the pit hall door and the vertical rod in the pit to bend, and when the pit hall door is closed and the vertical rod in the pit is in a bending state, the overhaul switch branch 102 is conducted. Specifically, the overhaul switch branch 102 is internally provided with a pit door lock switch S1 and a pit bending switch S2 which are connected in series. When an maintainer enters the pit, the pit hall door is opened, the pit door lock switch S1 is disconnected, and when the pit upright rod is vertically bent, the pit bending switch S2 is disconnected. That is, when the operator does not enter the pit, the pit door lock switch S1 and the pit bending switch S2 in the access switch branch are in a normally closed state, and the access switch branch 102 is kept on.
The TCI branch 103 is internally provided with a car top maintenance switch TCI and a pit vertical rod switch S3 which are connected in series, the states of the car top maintenance switch TCI and the pit vertical rod of the elevator are respectively controlled, and after the car top maintenance switch TCI is closed and the pit vertical rod is vertical, the TCI branch 103 is conducted.
The elevator control unit 200 is mainly used for controlling the upward movement of an elevator, and comprises a limit switch branch 201 and an upward movement enabling combined branch 202 which are connected in parallel to an elevator safety loop.
The limit switch S4 in the limit switch branch 201 is controlled by the limit position in the pit when the elevator descends to the limit position, and the limit switch S4 in the normally closed state is disconnected when the elevator descends to the limit position, so that the elevator safety loop is disconnected, and the elevator stops running.
The upward movement enabling combined branch 202 controls the upward movement of the elevator after the limit switch is turned off. The upward-running combined branch consists of a car roof calling upward branch 205, a control cabinet calling upward branch 203 and an out-hall calling upward branch 204 which are connected in parallel, and after any upward branch is conducted, an elevator safety loop is conducted, and an elevator can call upward.
The car top calling up branch 205 is controlled to be conducted by a car top up button U1, a public terminal button C and a car top maintenance switch TCI, the car top maintenance switch TCI is closed, and an operator can call an elevator up on the car top by simultaneously pressing the car top up button U1 and the public terminal button C.
The control cabinet calling up branch 203 is internally connected with a normally closed car top maintenance switch TCI and an emergency electric operation switch ERO in series, after the elevator descends to a limit position, the limit switch S4 is disconnected, and when the car top maintenance switch TCI and the emergency electric operation switch ERO are not operated, the control cabinet calling up branch 203 is automatically conducted, so that an elevator safety loop is conducted, and the control system automatically calls the elevator up.
The hall call up leg 204 is controlled to be turned on by the hall up button U2, the emergency electric run switch ERO, and the normally closed car roof maintenance switch TCI. When the emergency electric operation switch ERO is closed, the car roof maintenance switch TCI is opened, and the hall up button U2 is pressed, the hall call up branch 204 is conducted, and the elevator can call up.
The car roof and the control cabinet are internally provided with car roof maintenance switches TCI, and the car roof maintenance switches TCI and the control cabinet are synchronous, wherein after one car roof maintenance switch TCI acts, the car roof maintenance switch TCI at the other position also executes the same action.
The electrical system in this embodiment has a down signal detection branch 300 that is connected to the safety circuit of the elevator and which conducts and signals when the elevator is down. In the downlink signal detection branch 300, a normally closed detection limit switch S5 and a pit upright switch S3 are connected in series. The detection limit switch S5 is arranged above the limit switch S4, and the descending signal detection branch 300 is conducted after the car does not touch the detection limit switch S5 and the pit upright rod switch S3 is erected to send out a signal.
The electrical system in this embodiment also includes a signal control loop 400 and a signal indication loop 500. The signal lamp control loop 400 is internally composed of a pit door lock switch S1, a pit upright rod switch S3, a first relay KM1 and a second relay KM2, wherein a coil of the first relay KM1 and the normally closed pit door lock switch S1 are connected in series to form a first branch, a coil of the second relay KM2 and the normally open pit upright rod switch S3 are connected in series to form a second branch, and the first branch and the second branch are connected in parallel in the signal lamp control loop 400.
The signal light indication loop 500 includes a first red light indication leg, a second red light indication leg, and a green light indication leg in parallel. The normally closed contact K1 of the first relay and the normally closed contact K2 of the second relay are connected with the red indicator lamp L1 in series to form a first red lamp indication branch. The pit bending switch S2, the normally closed contact K2 of the second relay and the red indicator lamp L1 are connected in series to form a second red lamp indication branch. The normally open contact K2 of the second relay KM2 is connected with the green indicator lamp L2 in series to form a green light indication branch.
When the elevator needs to be overhauled and goes down, an operator needs to open a bottom hall door, a pit door lock switch S1 is disconnected and enters a pit, and a pit bending switch S2 and a pit vertical rod switch S3 are respectively erected. After the pit door lock switch S1 is opened, the coil of the first relay KM1 is not electrified, and two contacts in the first red light indicating branch are kept closed. After the pit vertical rod switch S3 is erected, a second branch consisting of coils of the pit vertical rod switch S3 and the second relay KM2 is conducted, two normally closed contacts K2 of the second relay KM2 in the first red light indication branch and the second red light indication branch are disconnected, and two contacts of the second relay KM2 in the green light indication branch are closed, so that the green light indication branch is conducted, the pit indication lamp is turned on by green light, and normal maintenance and descending can be performed.
The electrical system in this embodiment further includes a pit door lock switch reset branch 600 formed by connecting a reset electromagnet 700 and a pit door lock switch S1 in series, where the reset electromagnet 700 is triggered by a key of the pit hall door lock. When entering the pit, the door lock key is turned, the reset electromagnet 700 is electrified to drive the pit door lock switch to be disconnected; when the pit hall door is closed, the door lock key is turned, and the reset electromagnet is electrified to drive the pit door lock switch to be closed.
As shown in fig. 1, the pit hall door is opened and the upright rod in the pit is raised, the pit door lock switch S1 and the pit bending switch S2 are disconnected, so that the safety loop of the elevator is disconnected, the elevator cannot normally run, and the maintenance of the car roof can be performed.
As shown in fig. 2, the pit hall door is opened, the first branch in the signal lamp control loop is disconnected, the first red light indicates that the branch is kept on, and the red light indicates that the red light is on. The elevator safety circuit in fig. 1 is disconnected, the elevator can not normally run, the pit pole setting switch S3 is raised, the second branch in the signal lamp control circuit is conducted, the first red light indication branch and the second red light indication branch are simultaneously disconnected, the green light indication branch is conducted, the green light is lighted, the downlink signal detection branch of the elevator safety circuit is simultaneously connected to conduct, and the elevator can normally downlink. When the car descends to touch the limit switch 201, the elevator safety loop and the descending signal detection branch are disconnected, and the elevator cannot descend but can ascend at the moment. The elevator can be controlled to move upwards by conducting the elevator roof calling up leg 205 or the hall calling up leg 204 in the action up-enabling combined leg 202.
When resetting the elevator, the pit bending switch S2 and the pit vertical rod switch S3 are required to be reset, then an operator goes out of the pit, and the pit door lock switch S1 is reset by the reset electromagnet 700 through a key, and a red indicator light is turned off to indicate that the elevator is reset successfully.
The embodiment is suitable for the shallow pit vertical elevator, and operators need to go to the pit to open the pit bending switch and the pit vertical rod switch when overhauling downwards, so that the safety is improved.
Modifications and variations of the above embodiments will be apparent to those skilled in the art in light of the above teachings. Therefore, the application is not limited to the specific embodiments disclosed and described above, but some modifications and changes of the application should be also included in the scope of the claims of the application. In addition, although specific terms are used in the present specification, these terms are for convenience of description only and do not limit the present application in any way.
Claims (8)
1. An electric system of a vertical elevator with a shallow pit comprises an elevator safety loop and is characterized in that an elevator maintenance unit and an elevator control unit are connected in series in the elevator safety loop;
the elevator overhauling unit is internally provided with a plurality of parallel connection units:
an ERO emergency electric operation switch branch circuit is conducted after the emergency electric operation switch is closed;
the overhaul switch branch is conducted under the state that the pit hall door is closed and the vertical rod in the pit is bent;
the TCI car roof overhaul branch is conducted under the condition that a car roof overhaul switch is closed and a vertical rod in a pit is in an upright state;
the elevator control unit has in parallel:
a limit switch branch connected with a normally closed additional limit switch, which is triggered to be disconnected by the descending of the car to a first limit position;
an upward-running enabled combined branch, after the limit switch is disconnected, controlling the elevator to go upward, wherein the upward-running enabled combined branch consists of a car roof calling upward branch, a control cabinet calling upward branch and an out-of-hall calling upward branch which are connected in parallel, and after any upward branch is conducted, the elevator safety loop is conducted;
the elevator car roof calling uplink branch is internally provided with a car roof uplink button, a public terminal button and a car roof maintenance switch which are connected in series;
a normally closed car roof maintenance switch and a normally closed emergency electric operation switch are connected in series in the control cabinet calling uplink branch;
the hall call up branch is connected with a hall up button, an emergency electric running switch and a normally closed car top maintenance switch in series.
2. The electric system of the shallow pit vertical elevator according to claim 1, wherein in the overhaul switch branch, a pit door lock switch triggered by a pit hall door is connected in series with a pit bending switch triggered by an upright rod in the pit in a bending state;
when the elevator normally operates, the overhaul switch branch is in a conducting state.
3. The electrical system of a shallow pit vertical lift according to claim 1 wherein a pit vertical pole switch actuated by an in pit vertical pole in an erect condition in said TCI ceiling maintenance branch is connected in series with said ceiling maintenance switch.
4. An electrical system of a shallow pit vertical elevator according to claim 3, characterized in that a down signal detection branch is provided which is connected to the elevator safety circuit and which signals when the elevator is down;
in the descending signal detection branch, a detection limit switch which detects that the car descends to a second limit position and is normally closed is connected with the pit vertical rod switch in series.
5. The electrical system of a shallow pit vertical elevator according to claim 4, wherein the first limit position is at a lower elevation within the pit than the second limit position.
6. The electrical system of a shallow pit elevator according to claim 1, wherein the electrical system further comprises a signal control loop and a signal indication loop;
the signal lamp control loop is internally composed of a pit door lock switch, a pit upright rod switch, a first relay and a second relay, wherein a coil of the first relay is connected with a normally closed pit door lock switch in series to form a first branch, a coil of the second relay is connected with a normally open pit upright rod switch in series to form a second branch, and the first branch and the second branch are connected in parallel in the signal lamp control loop.
7. The electrical system of a shallow pit elevator according to claim 6, wherein the signal light indication loop comprises a first red light indication branch, a second red light indication branch, and a green light indication branch connected in parallel;
the normally closed contact of the first relay and the normally closed contact of the second relay are connected in series with the red indicator lamp to form a first red indicator branch;
the pit bending switch, the normally closed contact of the second relay and the red indicator lamp are connected in series to form a second red lamp indication branch;
the normally open contact of the second relay is connected with the green indicator lamp in series to form a green light indication branch.
8. The electrical system of a pit elevator according to claim 7, further comprising a pit door lock switch reset branch formed by connecting a reset electromagnet and a pit door lock switch in series, wherein the reset electromagnet is triggered by a key of a pit hall door lock to drive the pit door lock switch to reset.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811286451.0A CN109081207B (en) | 2018-10-31 | 2018-10-31 | Electrical system of vertical elevator with shallow pit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811286451.0A CN109081207B (en) | 2018-10-31 | 2018-10-31 | Electrical system of vertical elevator with shallow pit |
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| Publication Number | Publication Date |
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| CN109081207A CN109081207A (en) | 2018-12-25 |
| CN109081207B true CN109081207B (en) | 2023-11-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811286451.0A Active CN109081207B (en) | 2018-10-31 | 2018-10-31 | Electrical system of vertical elevator with shallow pit |
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| CN (1) | CN109081207B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109650203B (en) * | 2019-01-02 | 2024-03-15 | 杭州优迈科技有限公司 | Shallow pit installs elevator additional and electrical system thereof |
| CN110077929A (en) * | 2019-05-22 | 2019-08-02 | 快意电梯股份有限公司 | Install the shallow pit electrical system of elevator additional |
| CN112209200B (en) * | 2020-09-09 | 2022-12-20 | 西安特种设备检验检测院 | Manual-automatic integrated emergency self-rescue device and method for elevator traction and braking failure |
| CN113562559B (en) * | 2021-07-23 | 2023-03-21 | 中国大唐集团科学技术研究院有限公司西北电力试验研究院 | Improved landing calling method suitable for double elevators |
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| US8162108B2 (en) * | 2006-06-30 | 2012-04-24 | Otis Elevator Company | Elevator having a limit switch for controlling power to the drive system as an elevator car approaches a shallow pit or a low overhead |
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| JPH0891730A (en) * | 1994-09-22 | 1996-04-09 | Toshiba Elevator Technos Kk | Safety device for elevator |
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| Publication number | Publication date |
|---|---|
| CN109081207A (en) | 2018-12-25 |
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