Elevator car roof maintenance control loop and elevator

Abstract

The utility model discloses an elevator car roof maintenance control loop and an elevator, and a maintenance starting loop is used for generating a maintenance starting signal and sending the maintenance starting signal to a CTB car serial plate; a diode module; the main control board is used for sending an overhaul starting signal to the CCB elevator main control board when the overhaul starting loop is conducted; the CTB lift car serial board generates a maintenance operation instruction and sends the maintenance operation instruction to the CCB lift main control board based on the output state of the first signal port and the maintenance starting signal; according to the utility model, the diode module synchronizes the maintenance starting signal to the CCB elevator main control board, and the CCB elevator main control board executes the maintenance operation instruction based on the maintenance operation instruction and the maintenance starting signal sent by the diode module, so that the accurate execution of the maintenance operation instruction is ensured, and the safety risk caused by signal asynchronization is avoided.

Description

Technical Field

[0001] The utility model relates to the field of elevator car top maintenance, in particular to an elevator car top maintenance control circuit and an elevator. Background Art

[0002] The existing elevator car top maintenance function is usually connected in series through the maintenance switch and up and down direction operation switch installed on the car top, and multiple accompanying cables and the emergency electric switch in the machine room. This not only increases the number of cores of the accompanying cable and increases the cost of cable configuration, but also increases the potential risk of failure due to the increase in the number of cables.

[0003] In addition, traditional maintenance circuit design may lead to problems such as difficulty in signal synchronization, difficulty in troubleshooting, and low safety. In particular, errors or delays are prone to occur in the signal transmission and control links, thus affecting the stable operation of the elevator under maintenance and the safety of the operator. Utility Model Content

[0004] In order to simplify wiring, reduce costs, improve signal transmission accuracy and system safety during maintenance operation, and enhance the intelligence of the entire elevator system, the utility model proposes an elevator car top maintenance control circuit, including:

[0005] The first normally closed contact and the first normally open contact corresponding to the KAG car top maintenance switch;

[0006] The maintenance start circuit is used to generate a maintenance start signal and send it to the CTB car serial board; the CTB car serial board includes a power supply port and a first signal port;

[0007] The diode module electrically connected to the maintenance start circuit is used to send a maintenance start signal to the CCB elevator main control board when the maintenance start circuit is turned on; wherein:

[0008] One end of the first normally closed contact and one end of the first normally open contact are both connected to the power supply port of the CTB car serial board; the other end of the first normally closed contact is connected to the first signal port of the CTB car serial board; the other end of the first normally open contact is electrically connected to the maintenance start circuit;

[0009] The CTB car serial board generates a maintenance operation instruction based on the output state of the first signal port and the maintenance start signal and sends it to the CCB elevator main control board; the CCB elevator main control board executes the maintenance operation instruction based on the maintenance operation instruction and the maintenance start signal sent by the diode module.

[0010] Furthermore, when the CTB car serial board fails to detect the output of the first signal port, it sends a car top maintenance mode identification signal to the CCB elevator main control board; the CCB elevator main control board turns off the emergency electric and express functions based on the car top maintenance mode identification signal.

[0011] Further, the CTB car serial board also includes: a second signal port and a third signal port;

[0012] The maintenance start circuit includes: a car top operation determination switch KNG, a car top maintenance up switch AGS and a car top maintenance down switch AGX; one end of the car top operation determination switch KNG is connected to one end of the first normally open contact, and the other end is simultaneously connected to one end of the car top maintenance up switch AGS and the car top maintenance down switch AGX; the other end of the car top maintenance up switch AGS is connected to the second signal port of the CTB car serial board; the other end of the car top maintenance down switch AGX is connected to the third signal port of the CTB car serial board.

[0013] Furthermore, the CCB elevator main control board includes a signal access port X0.

[0014] Furthermore, the diode module comprises:

[0015] The first diode D1 and the second diode D2; the positive terminal of the first diode D1 is connected to the connection line between the car top maintenance down switch AGX and the third signal port of the CTB car serial board; the positive terminal of the second diode D2 is connected to the connection line between the car top maintenance up switch AGS and the second signal port of the CTB car serial board; the negative terminals of the first diode D1 and the second diode D2 are connected in parallel to the signal access port X0 of the CCB elevator main control board.

[0016] Furthermore, the maintenance start signal includes:

[0017] The upward inspection start signal is generated when the car top operation confirmation switch KNG and the car top inspection upward switch AGS are closed;

[0018] The down-maintenance start signal is generated when the car top operation confirmation switch KNG and the car top maintenance down-maintenance switch AGX are closed.

[0019] Furthermore, the maintenance operation instructions include: up maintenance operation instructions and down maintenance operation instructions.

[0020] Further, when the first signal port has no output and the maintenance start signal is an upward maintenance start signal, the CTB car serial board generates an upward maintenance operation instruction;

[0021] When the first signal port has no output and the maintenance start signal is a down-line maintenance start signal, the CTB car serial board generates a down-line maintenance operation instruction.

[0022] Furthermore, the CTB car serial board communicates with the CCB elevator main control board via CAN.

[0023] The utility model also proposes an elevator, comprising:

[0024] KAG car top inspection switch;

[0025] CTB car serial board;

[0026] CCB elevator main control board;

[0027] Elevator car top inspection control circuit as described above.

[0028] Compared with the prior art, the utility model has at least the following beneficial effects:

[0029] (1) In the present invention, the maintenance start circuit is used to generate a maintenance start signal and send it to the CTB car serial board; the diode module is used to send the maintenance start signal to the CCB elevator main control board when the maintenance start circuit is turned on; the CTB car serial board generates a maintenance operation instruction based on the output state of the first signal port and the maintenance start signal and sends it to the CCB elevator main control board; that is, the present invention synchronizes the maintenance start signal to the CCB elevator main control board through the diode module, and the CCB elevator main control board executes the maintenance operation instruction based on the maintenance operation instruction and the maintenance start signal sent by the diode module, thereby ensuring the accurate execution of the maintenance operation instruction and avoiding the safety risks caused by signal asynchrony;

[0030] (2) In the present invention, when the CTB car serial board fails to detect the output of the first signal port, it sends a car top maintenance mode identification signal to the CCB elevator main control board; the CCB elevator main control board turns off the emergency electric and express functions based on the car top maintenance mode identification signal, cancels the direct cable connection between the car top maintenance and the machine room emergency electric switch in the traditional maintenance circuit, significantly reduces the number of elevator accompanying cable cores, reduces the cable material cost and installation complexity, and reduces the possibility of maintenance function failure due to line failure, thereby improving the reliability of maintenance control;

[0031] (3) The utility model adds a car top operation confirmation switch KNG to require the operator to make additional confirmation before starting the maintenance operation, thereby enhancing the safety during the operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 This is a control circuit diagram for the inspection of an elevator car top; DETAILED DESCRIPTION

[0033] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0034] In order to improve the connection method of traditional maintenance circuits, simplify wiring, reduce costs, and enhance safety and reliability, such as Figure 1 As shown, the utility model proposes an elevator car top maintenance control circuit, comprising:

[0035] The first normally closed contact (1.1, 1.2) and the first normally open contact (2.1, 2.2) corresponding to the KAG car top maintenance switch;

[0036] The maintenance start circuit is used to generate a maintenance start signal and send it to the CTB car serial board; the CTB car serial board includes a power supply port 401 and a first signal port X1;

[0037] The CTB car serial board also includes: a second signal port X2 and a third signal port X3;

[0038] The maintenance start circuit includes: a car top operation determination switch KNG, a car top maintenance up switch AGS and a car top maintenance down switch AGX; one end of the car top operation determination switch KNG is connected to one end of the first normally open contact, and the other end is simultaneously connected to one end of the car top maintenance up switch AGS and the car top maintenance down switch AGX; the other end of the car top maintenance up switch AGS is connected to the second signal port X2 of the CTB car serial board; the other end of the car top maintenance down switch AGX is connected to the third signal port X3 of the CTB car serial board.

[0039] The maintenance start signal includes:

[0040] The upward inspection start signal is generated when the car top operation confirmation switch KNG and the car top inspection upward switch AGS are closed;

[0041] The down-maintenance start signal is generated when the car top operation confirmation switch KNG and the car top maintenance down-maintenance switch AGX are closed.

[0042] It should be noted that the car top maintenance up switch AGS and the car top maintenance down switch AGX respectively control the upward and downward movement of the elevator in the maintenance mode.

[0043] A diode module electrically connected to the maintenance start circuit, used to send a maintenance start signal to the CCB elevator main control board when the maintenance start circuit is turned on;

[0044] The CCB elevator main control board includes a signal access port X0.

[0045] The diode module comprises:

[0046] The first diode D1 and the second diode D2; the positive terminal of the first diode D1 is connected to the connection line between the car top maintenance down switch AGX and the third signal port X3 of the CTB car serial board; the positive terminal of the second diode D2 is connected to the connection line between the car top maintenance up switch AGS and the second signal port X2 of the CTB car serial board; the negative terminals of the first diode D1 and the second diode D2 are connected in parallel to the signal access port X0 of the CCB elevator main control board.

[0047] Simply put, the positive pole of D1 is connected to the down-line maintenance start signal, the positive pole of D2 is connected to the up-line maintenance start signal, and the negative poles of D1 and D2 are combined and connected to the signal access port X0 of the CCB elevator main control board.

[0048] One end of the first normally closed contact and one end of the first normally open contact are both connected to the power supply port 401 of the CTB car serial board; the other end of the first normally closed contact is connected to the first signal port X1 of the CTB car serial board; the other end of the first normally open contact is electrically connected to the maintenance start circuit;

[0049] The CTB car serial board generates a maintenance operation instruction based on the output state of the first signal port X1 and the maintenance start signal and sends it to the CCB elevator main control board; the CCB elevator main control board executes the maintenance operation instruction based on the maintenance operation instruction and the maintenance start signal sent by the diode module.

[0050] The maintenance operation instructions include: an upward maintenance operation instruction and a downward maintenance operation instruction.

[0051] When the first signal port X1 has no output and the maintenance start signal is an upward maintenance start signal, the CTB car serial board generates an upward maintenance operation instruction;

[0052] When the first signal port X1 has no output and the maintenance start signal is a down-line maintenance start signal, the CTB car serial board generates a down-line maintenance operation instruction.

[0053] The CTB car serial board communicates with the CCB elevator main control board via CAN.

[0054] When the CTB car serial board fails to detect the output of the first signal port X1, it sends a car top maintenance mode identification signal to the CCB elevator main control board through CAN communication; the CCB elevator main control board turns off the emergency electric and express functions based on the car top maintenance mode identification signal.

[0055] In this embodiment, the working principle and process of the elevator car top maintenance control circuit are as follows:

[0056] Start maintenance mode: The operator triggers the KAG car top maintenance switch to open the first normally closed contact and close the first normally open contact. The CTB car serial board cannot detect the signal of the first signal port X1, and informs the CCB elevator main control board through CAN communication that the elevator has entered the car top maintenance mode. At this time, the emergency electric and express functions of the elevator room are disabled.

[0057] Maintenance up: In the maintenance mode, press the car top operation confirmation switch KNG and the car top maintenance up switch AGS at the same time, the X2 signal of the CTB car serial board becomes valid (generates an up maintenance start signal), indicating the elevator maintenance up request. At this time, the CTB car serial board generates an up maintenance operation instruction based on the up maintenance start signal, and sends it to the CCB elevator main control board through CAN communication.

[0058] Maintenance down: In the maintenance mode, press the car top operation confirmation switch KNG and the car top maintenance down switch AGX, the X3 signal of the CTB car serial board becomes valid (generates a down maintenance start signal), representing the elevator maintenance down request. At this time, the CTB car serial board generates a down maintenance operation instruction based on the down maintenance start signal, and sends it to the CCB elevator main control board through CAN communication.

[0059] Signal synchronization and protection: When the X2 or X3 signal is valid, the D1 and D2 diodes immediately feed back the upward maintenance start signal or the downward maintenance start signal directly to the X0 port of the CCB elevator main control board; the CCB elevator main control board receives the maintenance operation command sent by the CTB car serial board through CAN communication, and also directly obtains the upward maintenance start signal or the downward maintenance start signal through the D1 and D2 diodes; the CCB elevator main control board will compare these two sets of signals, and only when the communication data (upward maintenance operation command or downward maintenance operation command) is consistent with the directly fed back diode signal (upward maintenance start signal or downward maintenance start signal), such as both are upward commands or both are upward commands, will the corresponding maintenance upward or downward operation be executed. If the two are not synchronized or contradictory, it indicates that there may be a signal transmission error or system failure. The CCB elevator main control board will refuse to perform the maintenance operation and report the fault to prevent safety hazards that may be caused by signal asynchrony.

[0060] In this embodiment, the KAG car top maintenance switch transmits the information that the elevator has entered the maintenance mode to the elevator control system through the switching of its two sets of contacts, so that the system can make corresponding adjustments (such as disabling emergency electric and express functions); on the other hand, it participates in constructing the control loop of the maintenance operation, so that only in the maintenance mode can the operator issue effective operation instructions through the car top maintenance up switch and the car top maintenance down switch. This design ensures the safe control of the elevator maintenance process and avoids the risk of misoperation or executing maintenance operation commands in a non-maintenance state.

[0061] This embodiment also proposes an elevator, comprising:

[0062] KAG car top inspection switch;

[0063] CTB car serial board;

[0064] CCB elevator main control board;

[0065] Elevator car top inspection control circuit as described above.

[0066] In the utility model, the maintenance start circuit is used to generate a maintenance start signal and send it to the CTB car serial board; the diode module is used to send the maintenance start signal to the CCB elevator main control board when the maintenance start circuit is turned on; the CTB car serial board generates a maintenance operation instruction based on the output state of the first signal port and the maintenance start signal and sends it to the CCB elevator main control board; that is, the utility model synchronizes the maintenance start signal to the CCB elevator main control board through the diode module, and the CCB elevator main control board executes the maintenance operation instruction based on the maintenance operation instruction and the maintenance start signal sent by the diode module, thereby ensuring the accurate execution of the maintenance operation instruction and avoiding the safety risks caused by signal asynchrony.

[0067] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0068] In addition, in the present invention, descriptions such as "first", "second", "one", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0069] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0070] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

Claims

1. An elevator car top maintenance control circuit, characterized in that: include: The first normally closed contact and the first normally open contact corresponding to the KAG car top maintenance switch; The maintenance start circuit is used to generate a maintenance start signal and send it to the CTB car serial board; the CTB car serial board includes a power supply port and a first signal port; The diode module electrically connected to the maintenance start circuit is used to send a maintenance start signal to the CCB elevator main control board when the maintenance start circuit is turned on; wherein: One end of the first normally closed contact and one end of the first normally open contact are both connected to the power supply port of the CTB car serial board; the other end of the first normally closed contact is connected to the first signal port of the CTB car serial board; the other end of the first normally open contact is electrically connected to the maintenance start circuit; The CTB car serial board generates a maintenance operation instruction based on the output state of the first signal port and the maintenance start signal and sends it to the CCB elevator main control board; the CCB elevator main control board executes the maintenance operation instruction based on the maintenance operation instruction and the maintenance start signal sent by the diode module.

2. An elevator car top maintenance control circuit according to claim 1, characterized in that: When the CTB car serial board fails to detect the output of the first signal port, it sends a car top maintenance mode identification signal to the CCB elevator main control board; the CCB elevator main control board turns off the emergency electric and express functions based on the car top maintenance mode identification signal.

3. An elevator car top maintenance control circuit according to claim 2, characterized in that: The CTB car serial board also includes: a second signal port and a third signal port; The maintenance start circuit includes: a car top operation determination switch, a car top maintenance up switch and a car top maintenance down switch; one end of the car top operation determination switch is connected to one end of the first normally open contact, and the other end is simultaneously connected to one end of the car top maintenance up switch and the car top maintenance down switch; the other end of the car top maintenance up switch is connected to the second signal port of the CTB car serial board; the other end of the car top maintenance down switch is connected to the third signal port of the CTB car serial board.

4. An elevator car top inspection control circuit according to claim 3, characterized in that: The CCB elevator main control board includes a signal access port X0.

5. An elevator car top inspection control circuit according to claim 4, characterized in that: The diode module comprises: The first diode D1 and the second diode D2; the positive terminal of the first diode D1 is connected to the connection line between the car top maintenance down switch and the third signal port of the CTB car serial board; the positive terminal of the second diode D2 is connected to the connection line between the car top maintenance up switch and the second signal port of the CTB car serial board; the negative terminals of the first diode D1 and the second diode D2 are connected in parallel to the signal access port X0 of the CCB elevator main control board.

6. An elevator car top inspection control circuit according to claim 5, characterized in that: The maintenance start signal includes: The upward inspection start signal is generated when the car top operation confirmation switch and the car top inspection upward switch are closed; The down-line maintenance start signal is generated when the car top operation confirmation switch and the car top maintenance down-line switch are closed.

7. An elevator car top inspection control circuit according to claim 6, characterized in that: The maintenance operation instructions include: an upward maintenance operation instruction and a downward maintenance operation instruction.

8. An elevator car top inspection control circuit according to claim 7, characterized in that: When the first signal port has no output and the maintenance start signal is an upward maintenance start signal, the CTB car serial board generates an upward maintenance operation instruction; When the first signal port has no output and the maintenance start signal is a down-line maintenance start signal, the CTB car serial board generates a down-line maintenance operation instruction.

9. An elevator car top inspection control circuit according to claim 1, characterized in that: The CTB car serial board communicates with the CCB elevator main control board via CAN.

10. An elevator, characterized in that: include: KAG car top inspection switch; CTB car serial board; CCB elevator main control board; An elevator car top maintenance control circuit as claimed in any one of claims 1 to 9.

Images