Pit maintenance triggering device
By identifying the elevator pit maintenance status through the pit maintenance trigger device and forcibly entering the pit maintenance mode, the safety risk problem during elevator pit maintenance is solved, and the safety control of the elevator is realized when it is not at the bottom.
Patent Information
- Application Number
- CN202520208747.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-10
- Publication Date
- 2026-01-23
- Estimated Expiration
- 2035-02-10
AI Technical Summary
During existing elevator pit maintenance, there is a safety risk that the elevator may resume normal operation if personnel enter the pit without promptly disconnecting the emergency stop switch or closing the hall door.
Design a pit maintenance triggering device that uses a pit maintenance panel and an electrical safety switch to identify whether personnel have entered the pit for maintenance operations, and forces the elevator into pit maintenance mode when it is not at the bottom floor to prevent the elevator from automatically resuming normal operation.
It improves the safety of elevator pit maintenance, prevents safety accidents caused by operational errors, and ensures that the elevator cannot automatically resume normal operation when not at the bottom floor.
Smart Images
Figure CN223823102U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to elevator maintenance technical field, concretely relates to a pit maintenance trigger device. BACKGROUND
[0002] The maintenance operation of the elevator is the most commonly used function of the elevator tester or the maintenance personnel, according to the new national standard GB / T7588.1 of the elevator, the pit also needs to be configured with the maintenance operation function, when the elevator tester or the maintenance personnel enters the pit, the pit maintenance handle needs to be used to carry out the maintenance operation, at this time, the elevator enters the pit maintenance mode, the machine room emergency motor will be invalid, the pit maintenance will be prior to the emergency motor mode, and the elevator tester or the maintenance personnel can control the car up and down operation in the safe position of the pit, which is convenient for the maintenance and maintenance of the car bottom and the internal parts of the pit.
[0003] At present, when it is necessary to enter the pit maintenance, the elevator is first stopped at the high layer, the bottom layer hall door is opened by using the triangular key, then the pit emergency stop switch is disconnected to enter the pit, and the maintenance switch on the maintenance handle is operated to make the elevator pit maintenance mode. The pit maintenance mode has certain risks, if the personnel enters the pit, does not disconnect the emergency stop switch as required, and the pit maintenance switch hall door is closed without timely operation, then the elevator will restore normal opening, and there is certain safety risk.
[0004] Therefore, a pit maintenance trigger device with high safety needs to be provided. UTILITY MODEL CONTENTS
[0005] In order to solve the defects existing in the prior art, the utility model provides a pit maintenance trigger device.
[0006] In order to solve the above technical problems, the utility model provides the following technical scheme:
[0007] The utility model provides a kind of bottom pit maintenance trigger device, including bottom pit maintenance plate and electrical safety switch SMH, JP2.1 public end input point, JP2.2 bottom pit maintenance input point, JP2.3 maintenance uplink input point, JP2.4 maintenance downlink input point, JP2.5 bottom pit reset input point, JP6.3 bottom pit detection input point, JP6.4 public end input point are equipped on the bottom pit maintenance plate, JP2.2 bottom pit maintenance input point and JP2.1 public end input point are connected in series by bottom pit maintenance switch SDT, JP2.5 bottom pit reset input point is connected in series with JP2.1 public end input point by bottom pit maintenance reset switch SFW;JP2.3 maintenance uplink input point is connected in series with P2.2 bottom pit maintenance input point by uplink switch SDTU, switch SDTR, bottom pit maintenance switch SDT and in turn, JP2.4 maintenance downlink input point is connected in series with P2.2 bottom pit maintenance input point by downlink switch SBPD, switch SBPR, bottom pit maintenance switch SDT and in turn;Electrical safety switch SMH is connected in series with JP6.3 bottom pit detection input point, JP6.4 public end input point.
[0008] Preferably, the electrical safety switch SMH is triggered to disconnect by the hall door triangular lock assembly.
[0009] Preferably, further including control cabinet interface board that is communicatively connected with bottom pit maintenance plate, X25 maintenance operation input point, X7 emergency electric input point, X9 uplink input point, X10 downlink input point, X26 additional upper limit input point are equipped on the control cabinet interface board, X7 emergency electric input point, X25 maintenance operation input point are connected in series by first maintenance operation switch SWH1 and emergency electric switch SAF, X9 uplink input point is connected in series with emergency electric switch SAF and second maintenance operation switch SWH2 by uplink switch SBPU, running switch SBPR respectively in turn, X10 downlink input point is connected in series with emergency electric switch SAF and second maintenance operation switch SWH2 by downlink switch SBPD, running switch SBPR respectively in turn, X26 additional upper limit input point is connected in series with additional upper limit switch SLUT1.
[0010] Preferably, the system also includes a car top interface board that is communicatively connected to the control cabinet interface board. The car top interface board includes a first car top maintenance input point (TJX-J06), a second car top maintenance input point (TJX-J07), an up / down input point (TJX-J08), an up / down same-direction input point (TJX-J13), and a down / down same-direction input point (TJX-J14). The first car top maintenance input point (TJX-J06) and the second car top maintenance input point (TJX-J07) are connected in series via a car top maintenance switch (SRT). The second car top maintenance input point (TJX-J07) is connected in series with the up / down input point (TJX-J08). The up / down input point (TJX-J08) is connected in series with the up / down input point (TJX-J13) via a same-direction operation switch (SBTR) and an up / down same-direction switch (SBTU). The up / down input point (TJX-J08) is connected in series with the down / down same-direction input point (TJX-J14) via a same-direction operation switch (SBTR) and a down / down same-direction switch (SBTD).
[0011] Compared with the prior art, this utility model has the following advantages:
[0012] Based on the existing electrical structure, this utility model identifies whether personnel are about to enter the pit for maintenance operations by adding an auxiliary switch. Once the bottom hall door is detected to be open and the elevator is not on the bottom floor, it will force the elevator to enter the pit maintenance mode, preventing the elevator from running normally and causing safety accidents after personnel enter without activating the emergency stop, maintenance, or closing of the hall door. Attached Figure Description
[0013] Figure 1 This is a circuit diagram of a pit maintenance triggering device according to the present invention. Detailed Implementation
[0014] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.
[0015] Example 1
[0016] like Figure 1As shown, this embodiment provides a pit maintenance triggering device, including a pit maintenance plate and an electrical safety switch SMH. The pit maintenance plate is provided with a JP2.1 common terminal input point, a JP2.2 pit maintenance input point, a JP2.3 maintenance uplink input point, a JP2.4 maintenance downlink input point, a JP2.5 pit reset input point, a JP6.3 pit detection input point, and a JP6.4 common terminal input point. The JP2.2 pit maintenance input point and the JP2.1 common terminal input point are connected in series through the pit maintenance switch SDT. The JP2.5 pit reset input point... The position input point is connected in series with the common terminal input point of JP2.1 via the pit inspection and maintenance position switch SFW; the maintenance upward input point of JP2.3 is connected in series with the pit inspection input point of P2.2 via the upward switch SDTU, switch SDTR, and pit inspection switch SDT in sequence; the maintenance downward input point of JP2.4 is connected in series with the pit inspection input point of P2.2 via the downward switch SDTD, switch SDTR, and pit inspection switch SDT in sequence; the electrical safety switch SMH is connected in series with the pit detection input point of JP6.3 and the common terminal input point of JP6.4.
[0017] In this embodiment, the electrical safety switch SMH is triggered to disconnect via the hall door triangular lock assembly.
[0018] In this embodiment, a control cabinet interface board is also included, which is communicatively connected to the pit maintenance plate. The control cabinet interface board is provided with an X25 maintenance operation input point, an X7 emergency electric input point, an X9 upward input point, an X10 downward input point, and an X26 additional upper limit input point. The X7 emergency electric input point and the X25 maintenance operation input point are connected in series with the emergency electric switch SAF through the first maintenance operation switch SWH1. The X9 upward input point is connected in series with the emergency electric switch SAF and the second maintenance operation switch SWH2 through the upward switch SBPU and the run switch SBPR, respectively. The X10 downward input point is connected in series with the emergency electric switch SAF and the second maintenance operation switch SWH2 through the downward switch SBPD and the run switch SBPR, respectively. The X26 additional upper limit input point is connected in series with the additional upper limit switch SLUT1.
[0019] In this embodiment, a car top interface board is also included, which is communicatively connected to the control cabinet interface board. The car top interface board includes a first car top maintenance input point (TJX-J06), a second car top maintenance input point (TJX-J07), an up / down input point (TJX-J08), an up / down same-direction input point (TJX-J13), and a down / down same-direction input point (TJX-J14). The first car top maintenance input point (TJX-J06) and the second car top maintenance input point (TJX-J07) are connected in series via a car top maintenance switch (SRT). The second car top maintenance input point (TJX-J07) is connected in series with the up / down input point (TJX-J08). The up / down input point (TJX-J08) is connected in series with the up / down input point (TJX-J13) via a same-direction operation switch (SBTR) and an up / down same-direction switch (SBTU). The up / down input point (TJX-J08) is connected in series with the down / down same-direction input point (TJX-J14) via a same-direction operation switch (SBTR) and a down / down same-direction switch (SBTD). When the car top inspection and pit inspection are performed simultaneously, the elevator cannot operate unless the inspections are in the same direction.
[0020] The working principle of this embodiment will be further explained below:
[0021] Under normal conditions, the JP2.1 common terminal input and JP2.2 pit maintenance input on the pit maintenance board are connected. When the pit maintenance switch SDT is operated, the JP2.1 common terminal input and JP2.2 pit maintenance input on the pit maintenance board are disconnected, and the pit maintenance mode is entered.
[0022] When the elevator is not on the ground floor, and the triangular key to the ground floor hall door triggers the electrical safety switch SMH to disconnect, the 11 / 12 contacts of the electrical safety switch SMH are connected to the JP6.4 common terminal input point and the JP6.3 pit inspection plate input point (normally closed). The control system detects the disconnection of the signals at the JP6.4 common terminal input point and the JP6.3 pit inspection plate input point through the pit inspection plate. When the elevator is not on the ground floor, it forces the elevator into the pit inspection state. At this time, even if the hall door is closed, the elevator cannot automatically return to normal operation. It can only be reset by operating the pit inspection reset switch SFW outside the hall.
[0023] When emergency electric, car top maintenance, or pit maintenance is activated, the safety circuit is simultaneously cut off. When maintenance stops, the up + running + down switches are pressed simultaneously to make the stop smoother. The switch buttons can be released after the car has come to a complete stop.
[0024] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. A pit maintenance triggering device, characterized in that, The system includes a pit maintenance panel and an electrical safety switch SMH. The pit maintenance panel has JP2.1 common terminal input, JP2.2 pit maintenance input, JP2.3 maintenance uplink input, JP2.4 maintenance downlink input, JP2.5 pit reset input, JP6.3 pit detection input, and JP6.4 common terminal input. The JP2.2 pit maintenance input and the JP2.1 common terminal input are connected in series via the pit maintenance switch SDT. The JP2.5 pit reset input is connected in series via the pit maintenance switch SDT. The reset switch SFW is connected in series with the common terminal input point of JP2.1; the maintenance uplink input point of JP2.3 is connected in series with the pit maintenance input point of P2.2 via the uplink switch SDTU, switch SDTR, and pit maintenance switch SDT in sequence; the maintenance downlink input point of JP2.4 is connected in series with the pit maintenance input point of P2.2 via the downlink switch SDTD, switch SDTR, and pit maintenance switch SDT in sequence; the electrical safety switch SMH is connected in series with the pit detection input point of JP6.3 and the common terminal input point of JP6.
4.
2. The pit maintenance triggering device according to claim 1, characterized in that, The electrical safety switch SMH is triggered to disconnect via the hall door triangular lock assembly.
3. The pit maintenance triggering device according to claim 2, characterized in that, It also includes a control cabinet interface board that communicates with the pit maintenance plate. The control cabinet interface board is equipped with an X25 maintenance operation input point, an X7 emergency electric input point, an X9 upward input point, an X10 downward input point, and an X26 additional upper limit input point. The X7 emergency electric input point and the X25 maintenance operation input point are connected in series with the emergency electric switch SAF through the first maintenance operation switch SWH1. The X9 upward input point is connected in series with the emergency electric switch SAF and the second maintenance operation switch SWH2 through the upward switch SBPU and the run switch SBPR, respectively. The X10 downward input point is connected in series with the emergency electric switch SAF and the second maintenance operation switch SWH2 through the downward switch SBPD and the run switch SBPR, respectively. The X26 additional upper limit input point is connected in series with the additional upper limit switch SLUT1.
4. The pit maintenance triggering device according to claim 1, characterized in that, It also includes a car top interface board that communicates with the control cabinet interface board. The car top interface board includes a first car top maintenance input point (TJX-J06), a second car top maintenance input point (TJX-J07), an up / down input point (TJX-J08), an up / down same-direction input point (TJX-J13), and a down / down same-direction input point (TJX-J14). The first car top maintenance input point (TJX-J06) and the second car top maintenance input point (TJX-J07) are connected in series via a car top maintenance switch (SRT). The second car top maintenance input point (TJX-J07) is connected in series with the up / down input point (TJX-J08). The up / down input point (TJX-J08) is connected in series with the up / down input point (TJX-J13) via a same-direction operation switch (SBTR) and an up / down same-direction switch (SBTU). The up / down input point (TJX-J08) is connected in series with the down / down same-direction input point (TJX-J14) via a same-direction operation switch (SBTR) and a down / down same-direction switch (SBTD).