Elevator maintenance priority control circuit

Abstract

The utility model discloses an elevator maintenance priority control circuit, which belongs to the technical field of elevator application, and comprises a main control board, a car roof board and a pit maintenance board, the CD port of the main control board is in communication connection with the CD port of the car roof board, and the HD port of the main control board is in communication connection with the JP1 port of the pit maintenance board; an emergency electric signal end of the main control board is connected with one end of a normally-closed knife in the double-knife relay SAF, a car roof maintenance signal end of the car roof board is connected with one end of a normally-closed knife in the double-knife relay SRT, and a pit maintenance signal end of the pit maintenance board is connected with one end of a normally-closed knife in the double-knife relay SDT. According to the utility model, the maintenance priority adopts a control mode of combining hardware and software, so that double safety is realized; whether the maintenance switch is manually short-circuited or not is actively identified, and the safety is improved; a communication mode is adopted for maintenance signals, so that cables in a well are saved, and the safety is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of elevator application, in particular to an elevator maintenance priority control circuit. Background Art

[0002] With the construction of more and more high-rise buildings, elevators have become an indispensable device in existing high-rise buildings or shopping malls. Elevators provide a convenient and fast way of travel. Especially for the elderly, disabled people, children and people who carry heavy objects, elevators can make it easier for them to go up and down the stairs, reducing the consumption of physical strength and time. At the same time, the speed of elevators is getting faster and faster, which can be more efficient in production and life. Elevators can reduce the noise, dust and odor on the way to the stairs. At the same time, elevators are a comfortable, easy and pleasant way to travel. For the elderly, disabled people and families with more items, home elevators can facilitate their travel and activities and improve their quality of life. At the same time, the comfort of home elevators is also superior to stairs, which can reduce the fatigue and discomfort caused by climbing stairs. Compared with stairs, elevators have more advantages in safety and convenience. Home elevators are equipped with safety configurations such as emergency parking devices, safety doors, and anti-collision devices to ensure the safety of personnel in emergency situations. Moreover, the use of home elevators is more convenient and faster, which can improve the travel efficiency of personnel.

[0003] In order to facilitate the maintenance of the elevator, according to the latest national elevator standards, the elevator needs to be equipped with an emergency electric operation device in the machine room and a maintenance operation device on the car top and pit.

[0004] Emergency electric and multiple maintenance and operation devices coexist, and the priority needs to be designed reasonably. If the priority is not handled properly, it will bring safety hazards to maintenance personnel. For example, a maintenance personnel is repairing the car top, and another maintenance personnel enters the pit for maintenance. The pit maintenance personnel wants to run the elevator downward. If the elevator can be moved at this time, it will inevitably make the maintenance personnel on the car top uneasy. Therefore, it is necessary to plan the elevator maintenance priority control circuit to avoid such hidden dangers. Utility Model Content

[0005] With regard to the above-mentioned problems existing in the prior art, the purpose of the present utility model is to provide an elevator maintenance priority control circuit to solve the problems raised in the above-mentioned background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] An elevator maintenance priority control circuit comprises a main control board, a car top board and a pit maintenance board, wherein a CD port of the main control board is communicatively connected with a CD port of the car top board, and an HD port of the main control board is communicatively connected with a JP1 port of the pit maintenance board;

[0008] The emergency electric signal terminal of the main control board is connected to one end of the normally closed knife in the double-pole relay SAF, and the other end of the normally closed knife of the double-pole relay SAF is connected to the electrostatic discharge mode CDM;

[0009] The emergency electric uplink terminal of the main control board is connected to one end of the relay SBPU, and the other end of the relay SBPU is connected to one end of the relay SBPR;

[0010] The emergency electric down terminal of the main control board is connected to one end of the relay SBPD, the other end of the relay SBPD is also connected to one end of the relay SBPR, the other end of the relay SBPR is connected to one end of the normally open knife in the double-pole relay SAF, and the other end of the normally open knife is connected to the electrostatic discharge mode CDM;

[0011] The car top inspection signal terminal of the car top board is connected to one end of the normally closed knife in the double-knife relay SRT, and the other end of the normally closed knife is connected to the common end of the car top board;

[0012] The car top inspection uplink end of the car top board is connected to one end of the relay SBTU, and the other end of the relay SBTU is connected to one end of the relay SBTR;

[0013] The car top maintenance down end of the car top board is connected to one end of the relay SBTD, the other end of the relay SBTD is also connected to one end of the relay SBTR, the other end of the relay SBTR is connected to one end of the normally open knife in the double-pole relay SRT, and the other end of the normally open knife of the double-pole relay SRTD is connected to the common end of the car top board;

[0014] The pit inspection signal terminal of the pit inspection panel is connected to one end of the normally closed knife in the double-knife relay SDT, and the other end of the normally closed knife is connected to the common terminal of the pit inspection panel;

[0015] The pit inspection uplink end of the pit inspection panel is connected to one end of the relay SDTU, and the other end of the relay SDTU is connected to one end of the relay SDTR;

[0016] The pit inspection downward end of the pit inspection plate is connected to one end of the relay SDTD, the other end of the relay SDTD is also connected to one end of the relay SDTR, the other end of the relay SDTR is connected to one end of the normally open knife in the double-pole relay SDT, and the other end of the normally open knife in the double-pole relay SDT is connected to the common end of the pit inspection plate.

[0017] As a further solution of the utility model: the CD port 1 of the main control board is connected to the CD port 1 of the car top board through the signal line TXV+;

[0018] The CD port 2 of the main control board is connected to the CD port 2 of the car top board through the signal line TXV-;

[0019] The CD port 3 of the main control board is connected to the CD port 3 of the car top board through the signal line TXA+;

[0020] The CD port 4 of the main control board is connected to the CD port 4 of the car top board through the signal line TXA-.

[0021] As a further solution of the utility model: the CD port 5 of the main control board is connected to the CD port 5 of the car top board through a shielding layer.

[0022] As a further solution of the utility model: the CD port 6 of the main control board and the CD port 6 of the car top board are both grounded.

[0023] As a further solution of the utility model: the HD port 1 of the main control board is connected to the JP1 port 1 of the pit inspection board via the communication signal line TXV+;

[0024] The HD port 2 of the main control board is connected to the JP1 port 2 of the pit inspection board through the communication signal line TXV-;

[0025] The HD port 3 of the main control board is connected to the JP1 port 3 of the pit inspection board through the communication signal line TXA+;

[0026] The HD port 4 of the main control board is connected to the JP1 port 4 of the pit inspection board through the communication signal line TX-+.

[0027] As a further solution of the utility model: the HD ports 6 of the main control board are all grounded.

[0028] As a further solution of the utility model:

[0029] Compared with the prior art, the beneficial effects of the utility model are:

[0030] The maintenance priority of the utility model adopts a control method combining hardware and software, which has double safety. It actively identifies whether the maintenance switch is short-circuited manually to improve safety. The maintenance signal adopts a communication mode to save cables in the well and greatly increase safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 The present invention is a schematic diagram of an elevator maintenance priority control circuit disclosed in an embodiment. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model; it is obvious that the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0033] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", and "connected" should be understood in a broad sense; for example, it can be a fixed connection, a detachable connection, or an integral connection, a mechanical connection, or an electrical connection, a direct connection, or an indirect connection through an intermediate medium, or the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0034] In order to control the maintenance priority of the elevator, the maintenance priority must be confirmed first. The maintenance priority of this solution is: car top maintenance = pit maintenance > emergency electric. This solution adopts the hardware + software dual control mode.

[0035] In terms of hardware, when the emergency electric switch, car top inspection switch or pit inspection switch is actuated, the safety circuit will be disconnected. Pressing the "Direction" + "Run" buttons on the corresponding device at the same time can bypass the disconnected safety circuit. However, when there is a run + direction signal on the car top, the emergency electric circuit can be bypassed. When the pit inspection is actuated, the emergency electric circuit will also be bypassed. Conversely, the emergency electric circuit cannot bypass the car top inspection or pit inspection.

[0036] In the software, emergency electric signals, car top maintenance signals, and pit maintenance signals are collected by the main control board, car top board, and pit maintenance board respectively. Emergency electric up and down and maintenance up and down also use the communication mode. When the emergency electric and maintenance switches are activated at the same time, the software will determine that only maintenance operation can be performed; when the car top maintenance and pit maintenance are activated at the same time, the software will determine that only the buttons in the same direction of the car top and the pit can be operated at the same time, and the elevator is allowed to run. In addition, the communication frame will be checked. When the data frame is lost or the information is asymmetric, the elevator cannot perform emergency electric or maintenance operation.

[0037] See also Figure 1 , an elevator maintenance priority control circuit includes a main control board, a car top board and a pit maintenance board, the CD port of the main control board is communicatively connected with the CD port of the car top board, the HD port of the main control board is communicatively connected with the JP1 port of the pit maintenance board, the main control board is used to control the emergency electric control of the elevator, the car top board is used to inspect the elevator car top, and the pit maintenance board is used to inspect the elevator pit.

[0038] The emergency electric signal terminal of the main control board is connected to one end of the normally closed knife in the double-pole relay SAF, and the other end of the normally closed knife of the double-pole relay SAF is connected to the electrostatic discharge mode CDM;

[0039] The emergency electric uplink terminal of the main control board is connected to one end of the relay SBPU, and the other end of the relay SBPU is connected to one end of the relay SBPR;

[0040] The emergency electric down terminal of the main control board is connected to one end of the relay SBPD, the other end of the relay SBPD is also connected to one end of the relay SBPR, the other end of the relay SBPR is connected to one end of the normally open knife in the double-pole relay SAF, and the other end of the normally open knife is connected to the electrostatic discharge mode CDM;

[0041] The car top inspection signal terminal of the car top board is connected to one end of the normally closed knife in the double-knife relay SRT, and the other end of the normally closed knife is connected to the common end of the car top board;

[0042] The car top inspection uplink end of the car top board is connected to one end of the relay SBTU, and the other end of the relay SBTU is connected to one end of the relay SBTR;

[0043] The car top maintenance down end of the car top board is connected to one end of the relay SBTD, the other end of the relay SBTD is also connected to one end of the relay SBTR, the other end of the relay SBTR is connected to one end of the normally open knife in the double-pole relay SRT, and the other end of the normally open knife of the double-pole relay SRTD is connected to the common end of the car top board;

[0044] The pit inspection signal terminal of the pit inspection panel is connected to one end of the normally closed knife in the double-knife relay SDT, and the other end of the normally closed knife is connected to the common terminal of the pit inspection panel;

[0045] The pit inspection uplink end of the pit inspection panel is connected to one end of the relay SDTU, and the other end of the relay SDTU is connected to one end of the relay SDTR;

[0046] The pit inspection downlink end of the pit inspection plate is connected to one end of the relay SDTD, the other end of the relay SDTD is also connected to one end of the relay SDTR, the other end of the relay SDTR is connected to one end of the normally open knife in the double-pole relay SDT, and the other end of the normally open knife in the double-pole relay SDT is connected to the common end of the pit inspection plate;

[0047] Further, the CD port 1 of the main control board is connected to the CD port 1 of the car top board through the signal line TXV+;

[0048] The CD port 2 of the main control board is connected to the CD port 2 of the car top board through the signal line TXV-;

[0049] The CD port 3 of the main control board is connected to the CD port 3 of the car top board through the signal line TXA+;

[0050] The CD port 4 of the main control board is connected to the CD port 4 of the car top board through the signal line TXA-;

[0051] The CD port 5 of the main control board is connected to the CD port 5 of the car top board through the shielding layer;

[0052] CD port 6 of the main control board and CD port 6 of the car top board are both grounded;

[0053] Further, the HD port 1 of the main control board is connected to the JP1 port 1 of the pit inspection board via the communication signal line TXV+;

[0054] The HD port 2 of the main control board is connected to the JP1 port 2 of the pit inspection board through the communication signal line TXV-;

[0055] The HD port 3 of the main control board is connected to the JP1 port 3 of the pit inspection board through the communication signal line TXA+;

[0056] The HD port 4 of the main control board is connected to the JP1 port 4 of the pit inspection board through the communication signal line TX-+;

[0057] The HD port 6 of the main control board is grounded;

[0058] The working principle of the utility model is: when the emergency electric switch SAF is actuated, and the car top inspection switch SRT and the pit inspection switch SDT are not actuated, as long as the emergency electric operation SBPR+emergency electric direction (SBPU / SBPD) button is pressed, the elevator safety circuit forms a passage; when the main control board receives the emergency electric and running direction signals, the elevator enters the emergency electric operation; at this time, if the car top inspection switch SRT is actuated, the safety circuit is disconnected, and the emergency electric operation fails. When the car top inspection operation SBTR+car top inspection direction button (SBTU / SBTD) is pressed, the emergency electric circuit is bypassed, and the safety circuit forms a passage; when the car top board receives the car top inspection and running direction signals, the elevator enters the car top inspection operation. The same is true for the pit inspection SDT.

[0059] When the car top inspection switch SRT and the pit inspection switch SDT are actuated at the same time, the safety circuit has two circuit breaks. At this time, the two inspection locations need to press the run + direction run buttons at the same time to connect the safety circuit. At this time, the hardware has the operating conditions. At the same time, the main control board determines the content of the data frame based on the inspection and operation communication frame data received from the car top board and the pit inspection board. It can only run when the requested direction is consistent. If the directions are inconsistent, the direction inconsistent state is prompted.

[0060] If the car top inspection switch or pit inspection switch in the safety circuit is short-circuited, but the main control board receives the inspection signal from the car top or pit, the system will also be protected because the safety circuit has not changed its state of disconnection. The main control board will report a fault that the inspection safety circuit has not been disconnected. This strengthens the detection of the correct operation of the inspection switch in the safety circuit.

[0061] The car top inspection, pit inspection signals and running direction signals are collected to the main control board through the accompanying cable and the communication line in the shaft cable, and the main control board centrally processes the running logic. If the main control board receives the car top inspection signal, but the car top personnel press the run + up and down direction buttons at the same time, the main board has both up and down direction signals, and the elevator will stop. If the car top inspection and pit inspection have signals at the same time, but the running direction signals of the car top inspection and pit inspection are inconsistent, the elevator will stop because the two inspections have the same priority but the given running commands conflict. Since both the car top maintenance and the pit maintenance are in communication mode, the communication mode is easily affected by the environment or other objective factors. In addition to priority, the maintenance also has safety protection. For example, when the car top maintenance switch is actuated, the elevator enters the car top maintenance mode. However, due to communication quality problems, the main control board has not received the communication frame from the car top board within a certain period of time. At this time, the elevator will prompt a car top maintenance communication failure, and the car top maintenance cannot be run. The fault must be manually reset and the communication quality must be restored before re-entering the car top maintenance operation. The same applies to the pit maintenance operation.

[0062] The maintenance priority of the utility model adopts a control method combining hardware and software, which has double safety. It actively identifies whether the maintenance switch is short-circuited manually to improve safety. The maintenance signal adopts a communication mode to save cables in the well and greatly increase safety.

[0063] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention, and any figure mark in the claims should not be regarded as limiting the claims involved.

[0064] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. An elevator maintenance priority control circuit, characterized in that: It includes a main control board, a car top board and a pit inspection board, wherein the CD port of the main control board is communicatively connected with the CD port of the car top board, and the HD port of the main control board is communicatively connected with the JP1 port of the pit inspection board; The emergency electric signal terminal of the main control board is connected to one end of the normally closed knife in the double-pole relay SAF, and the other end of the normally closed knife of the double-pole relay SAF is connected to the electrostatic discharge mode CDM; The emergency electric uplink terminal of the main control board is connected to one end of the relay SBPU, and the other end of the relay SBPU is connected to one end of the relay SBPR; The emergency electric down terminal of the main control board is connected to one end of the relay SBPD, the other end of the relay SBPD is also connected to one end of the relay SBPR, the other end of the relay SBPR is connected to one end of the normally open knife in the double-pole relay SAF, and the other end of the normally open knife is connected to the electrostatic discharge mode CDM; The car top inspection signal terminal of the car top board is connected to one end of the normally closed knife in the double-knife relay SRT, and the other end of the normally closed knife is connected to the common end of the car top board; The car top inspection uplink end of the car top board is connected to one end of the relay SBTU, and the other end of the relay SBTU is connected to one end of the relay SBTR; The car top maintenance down end of the car top board is connected to one end of the relay SBTD, the other end of the relay SBTD is also connected to one end of the relay SBTR, the other end of the relay SBTR is connected to one end of the normally open knife in the double-pole relay SRT, and the other end of the normally open knife of the double-pole relay SRTD is connected to the common end of the car top board; The pit inspection signal terminal of the pit inspection panel is connected to one end of the normally closed knife in the double-knife relay SDT, and the other end of the normally closed knife is connected to the common terminal of the pit inspection panel; The pit inspection uplink end of the pit inspection panel is connected to one end of the relay SDTU, and the other end of the relay SDTU is connected to one end of the relay SDTR; The pit inspection downward end of the pit inspection plate is connected to one end of the relay SDTD, the other end of the relay SDTD is also connected to one end of the relay SDTR, the other end of the relay SDTR is connected to one end of the normally open knife in the double-pole relay SDT, and the other end of the normally open knife in the double-pole relay SDT is connected to the common end of the pit inspection plate.

2. An elevator maintenance priority control circuit according to claim 1, characterized in that: The CD port 1 of the main control board is connected to the CD port 1 of the car top board through the signal line TXV+; The CD port 2 of the main control board is connected to the CD port 2 of the car top board through the signal line TXV-; The CD port 3 of the main control board is connected to the CD port 3 of the car top board through the signal line TXA+; The CD port 4 of the main control board is connected to the CD port 4 of the car top board through the signal line TXA-.

3. An elevator maintenance priority control circuit according to claim 2, characterized in that: The CD port 5 of the main control board is connected to the CD port 5 of the car top board through a shielding layer.

4. An elevator maintenance priority control circuit according to claim 3, characterized in that: The CD port 6 of the main control board and the CD port 6 of the car top board are both grounded.

5. An elevator maintenance priority control circuit according to claim 1, characterized in that: The HD port 1 of the main control board is connected to the JP1 port 1 of the pit inspection board via the communication signal line TXV+; The HD port 2 of the main control board is connected to the JP1 port 2 of the pit inspection board through the communication signal line TXV-; The HD port 3 of the main control board is connected to the JP1 port 3 of the pit inspection board through the communication signal line TXA+; The HD port 4 of the main control board is connected to the JP1 port 4 of the pit inspection board through the communication signal line TX-+.

6. An elevator maintenance priority control circuit according to claim 5, characterized in that: The HD ports 6 of the main control board are all grounded.

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