Circuit for detecting loop of manual running-through layer car door and elevator door

Abstract

The utility model discloses a circuit for detecting a loop of a manual running-through layer car door elevator door. The circuit comprises a main control board, a first safety circuit, a second safety circuit and re-ordered layer car door contacts, the reordered landing door contacts are sequentially connected after being arranged according to the following form: a front car door contact, a front landing door closing contact and a front landing door locking contact are sequentially arranged from left to right; a rear landing door locking contact, a rear landing door closing contact and a rear car door contact; the front end of the front car door contact is connected with a first detection pin of the main control board, and the rear end is connected with a second detection pin; the front end of the front layer door locking contact and the rear end of the rear layer door locking contact are connected with a fourth detection pin of the main control board; and the front end of the rear car door contact is connected with a third detection pin of the main control board. According to the application, the electrical safety device at the locking position of the landing door locking device can be independently monitored, and the requirements on functions of the electrical safety device for checking the closing position of the car door and the electrical safety device for checking the locking position of the landing door locking device in the inspection gauge are met.

Description

Technical Field

[0001] The utility model relates to the technical field of elevator control circuits, in particular to a circuit for detecting a manual through-layer elevator door loop. Background Art

[0002] The elevator door circuit monitoring function is to prevent the electrical safety devices of the door circuits of the floor doors and car doors from being intentionally or unintentionally short-circuited, thereby causing accidents. After the elevator stops at the floor station, the floor doors and car doors of the elevator need to be opened manually. After the old elevator has been modified with the control cabinet and replaced with a new control that meets the requirements of the new inspection regulations, the switches on the door circuit need to be monitored to achieve the purpose of safety.

[0003] At present, the door lock circuit of the manual floor car door is that the locking contact of each floor door is connected in series with the door lock closing contact, and then the two contacts of the next floor are connected in series, and then the two contacts of the opposite floor doors are connected in series. Installing the control cabinet of the current mainstream modified Monarch control system, this connection method cannot achieve the requirements of the inspection regulations: an electrical safety device that can check the locking position of the floor door locking device; the failure to achieve this monitoring function means that this type of fault cannot be monitored. There are hidden safety risks. For example, in the paper "Analysis of Elevator Door Circuit Detection Principles and Inspection Methods", it is mentioned

[0004] The specific requirements for door circuit detection are that when the car is in the unlocking area and the car door lock is in the released state, first detect and monitor whether there are faults in the electrical safety device of the car door closing position, the electrical safety device of the floor door lock locking position, and the car door monitoring signal. Monitor the floor door lock contacts and car door lock contacts respectively, and use the leveling circuit to output the short-circuit door lock function. Every time the door is opened normally, the main board outputs a short-circuit door lock command, which in turn controls the short-circuit door lock. By measuring the voltage of the contacts on the floor door and the car door, it is determined whether the electric shock is correctly disconnected. Therefore, an independent car door monitoring signal is used to confirm whether it is in the closed state. This signal can directly enter the main control system, and the software compares the signal with the "open door" and "close door" commands to determine whether the action is correct.

[0005] Figure 1 The implementation method of the through-layer door circuit monitoring of the existing Monarch system is shown in the figure. In the figure, number 101 starts from the safety circuit electric shock, and the positions from number 130 to number 134 are the wiring diagrams of the elevator front and rear floor car door lock circuits. In the figure, SCB is the safety circuit, and the figure shows two identical safety circuits.

[0006] When the car stops in the unlocking area, the car door opens and the floor door lock is released, the car door and floor door lock in the figure are in the disconnected state. At this time, the safety circuit SCB excites a high-level voltage, that is, points 130, 132 and 134 in the figure are in the high-level state. If the front car door lock (1GS) in the figure is short-circuited (short-circuited), then the detection point X26 is in the high-level state. The main control board receives the state of X26 and detects that the front car door lock (1GS) is short-circuited, controls the elevator to be in the stopped state, and reports the door lock adhesion fault code; in the same way, if the front floor door lock (1DS) is short-circuited, X26 is also high-level, and the adhesion fault can be detected; if the rear floor door lock (2DS) or the rear car door lock (2GS) is short-circuited, X28 is in the high-level state, and the door lock adhesion fault can also be detected.

[0007] As we all know, the elevator's floor door lock contacts include two types: floor door locking contacts and floor door closing contacts. These two contacts of each floor are connected in series in the door lock circuit. After all the contacts of the front floor door are connected in series, these two contacts of each floor of the rear floor door are connected in series. Therefore, if only the floor door closing contact is actuated, the floor door circuit will be disconnected, that is to say, the floor door lock contact disconnection may not only be the floor door locking contact. It can be seen that this detection method can only detect the circuit formed by the car door electrical safety device and the floor door electrical safety device. It is not possible to check the function of the electrical safety device of the car door closing position and the electrical safety device of the floor door locking device locking position. Therefore, the door circuit detection circuit designed according to this idea still cannot meet the requirements of the inspection regulations. Utility Model Content

[0008] Therefore, the purpose of the utility model is to provide a circuit for manual through-layer car door elevator door loop detection, which can independently monitor the electrical safety device of the locking position of the floor door locking device, and realize the requirements of the inspection regulations for the functions of the electrical safety device for checking the closed position of the car door and the electrical safety device for checking the locking position of the floor door locking device.

[0009] In order to achieve the above-mentioned object, the utility model provides a circuit for manually penetrating the floor car door circuit detection of the elevator, which includes a main control board, a first safety circuit SCB, a second safety circuit SCB2 and a reordered floor car door contact;

[0010] The reordered floor door contacts are arranged in the following manner and connected in sequence: from left to right, the front floor door contact, the front floor door closing contact, the front floor door locking contact; the rear floor door locking contact, the rear floor door closing contact, and the rear floor door contact;

[0011] The front end of the front car door contact is connected to the first detection pin X25 of the main control board, and the rear end is connected to the second detection pin X26; the front end of the front door locking contact and the rear end of the rear door locking contact are connected to the fourth detection pin X28 of the main control board; the front end of the rear car door contact is connected to the third detection pin X27 of the main control board;

[0012] The first safety circuit SCB1 is connected in parallel between the front door car door contact and the front floor door locking contact, and the second safety circuit SCB2 is connected in parallel between the rear door car door contact and the rear floor door locking contact.

[0013] Further preferably, one end of the first safety circuit SCB1 is connected to the front end of the front car door contact, and the other end is connected to the rear end of the front floor door locking contact.

[0014] Further preferably, one end of the second safety circuit SCB2 is connected to the rear end of the front door locking contact, and the other end is connected to the rear end of the rear car door contact.

[0015] Further preferably, the rear end of the rear car door contact is connected to a safety circuit contact.

[0016] Further preferably, the model of the main control board is MCTC-MCB-C series.

[0017] The circuit for detecting the manual through-layer car door loop of the elevator disclosed in the present application has at least the following advantages compared with the prior art:

[0018] 1. It can not only monitor the circuit formed by the floor door contacts, but also, in particular, can monitor the electrical safety device (i.e., the floor door locking contact) of the locking position of the floor door locking device separately, and can realize the first part of the inspection and regulation requirements. This patent is original, breaking through the difficulty of floor door contact monitoring, expanding the scope of the content of the function to realize the inspection and regulation requirements, and especially realizing a key area or point in the current elevator floor door monitoring, which is pioneering.

[0019] 2. The implementation of the patent of the present invention is simple and low-cost. There is no need to expand the components in the elevator safety circuit board. It only needs to combine the contact arrangement and wiring of the door loop and adjust the contact point positions at both ends of the electrical safety circuit to realize the importance of the above-mentioned door loop monitoring. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 The diagram is a schematic diagram of the structure of a circuit for detecting an existing elevator door loop in the background technology.

[0021] Figure 2 The utility model is a schematic diagram of the structure of a circuit for manually penetrating floor car door elevator door loop detection. DETAILED DESCRIPTION

[0022] The present invention is further described in detail below through the accompanying drawings and specific implementation methods.

[0023] like Figure 2 As shown, a circuit for manually penetrating a floor car door loop detection provided by an embodiment of the utility model comprises a main control board, a first safety circuit SCB1, a second safety circuit SCB2 and a reordered floor car door contact;

[0024] The reordered floor door contacts are arranged in the following form and connected in sequence: from left to right, the front door contact 1GS, the front floor door closing contact 1DSA, the front floor door locking contact 1DSB; the rear floor door locking contact 2DSB, the rear floor door closing contact 2DSA, and the rear door contact 2GS;

[0025] The front end of the front car door contact 1GS is connected to the first detection pin X25 of the main control board, and the rear end is connected to the second detection pin X26; the front end of the front door locking contact 1DSB and the rear end of the rear door locking contact 2DSB are connected to the fourth detection pin X28 of the main control board; the front end of the rear car door contact 2GS is connected to the third detection pin X27 of the main control board;

[0026] The first safety circuit SCB1 is connected in parallel between the front door car door contact and the front floor door locking contact, and the second safety circuit SCB2 is connected in parallel between the rear door car door contact and the rear floor door locking contact.

[0027] One end of the first safety circuit SCB1 is connected to the front end of the front car door contact, and the other end is connected to the rear end of the front floor door locking contact. One end of the second safety circuit SCB2 is connected to the rear end of the front floor door locking contact, and the other end is connected to the rear end of the rear car door contact. The rear end of the rear car door contact is connected to the safety circuit contact.

[0028] The model of the main control board is MCTC-MCB-C series.

[0029] Installing the Invention Figure 2 The wiring principle of the car door contacts and the floor door locking contacts is as follows:

[0030] When the car stops in the unlocking area, the car door opens and the floor door lock is released, all contacts between 1GS and 2GS in the figure are in the disconnected state. At this time, the first safety circuit SCB1 and the second safety circuit SCB2 stimulate a high level voltage (the first safety circuit SCB1 and the second safety circuit SCB2 are existing devices of the elevator, which are used to provide a high level when the contacts are short-circuited).

[0031] The current car door contact 1GS is short-circuited, and the monitoring point X26 is at a high level, that is, the front car door contact is short-circuited;

[0032] When the rear car door contact 2GS is short-circuited, the monitoring point X27 is at a high level, which means that the front car door contact is short-circuited.

[0033] When the locking contact 1DSB or 2DSB of the front and rear doors is short-circuited, the monitoring point X28 is at a high level, that is, it is detected that a locking contact of the front and rear doors is short-circuited.

[0034] When only the front door closing contact 1DSA or the rear door closing contact 2DSA is short-circuited, all monitoring points are not in a high-level state, and it is impossible to detect that the door closing contact is short-circuited. However, this state is not dangerous, because according to the structural characteristics of the manual floor car door, when only the floor door closing contact is short-circuited, the floor door locking contact is in a disconnected state, and the elevator's safety circuit must also be disconnected, and the elevator is in a stopped state, which is a safe state. In addition, the inspection regulations do not require the monitoring function of the electrical safety device that monitors the floor door closing contact.

[0035] When there are continuous short-closed contacts of the floor door in the floor door circuit, then referring to the first two situations above, there must be a monitoring point that can be in a high level state, and it can be detected that the door lock is in a short-closed state. This situation is what the inspection regulations say, to check the monitoring function of the circuit composed of the car door electrical safety device and the floor door electrical safety device.

[0036] Obviously, the above embodiments are only examples for clear explanation, and are not intended to limit the implementation methods. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from them are still within the protection scope of the invention of the utility model.

Claims

1. A circuit for detecting a manual through-layer elevator door loop, characterized in that: It includes a main control board, a first safety circuit SCB1, a second safety circuit SCB2 and reordered floor door contacts; The reordered floor door contacts are arranged in the following manner and connected in sequence: from left to right, the front floor door contact, the front floor door closing contact, the front floor door locking contact; the rear floor door locking contact, the rear floor door closing contact, and the rear floor door contact; The front end of the front car door contact is connected to the first detection pin X25 of the main control board, and the rear end is connected to the second detection pin X26; the front end of the front door locking contact and the rear end of the rear door locking contact are connected to the fourth detection pin X28 of the main control board; the front end of the rear car door contact is connected to the third detection pin X27 of the main control board; The first safety circuit SCB1 is connected in parallel between the front door car door contact and the front floor door locking contact, and the second safety circuit SCB2 is connected in parallel between the rear door car door contact and the rear floor door locking contact.

2. The circuit for detecting the manual through-layer car door loop of an elevator according to claim 1 is characterized in that: One end of the first safety circuit SCB1 is connected to the front end of the front car door contact, and the other end is connected to the rear end of the front floor door locking contact.

3. The circuit for detecting the manual through-layer car door loop of an elevator according to claim 1, characterized in that: One end of the second safety circuit SCB2 is connected to the rear end of the front door locking contact, and the other end is connected to the rear end of the rear car door contact.

4. The circuit for detecting the manual through-layer car door loop of an elevator according to claim 1, characterized in that: The rear end of the rear car door contact is connected to the safety circuit contact.

5. The circuit for detecting the manual through-layer car door loop of an elevator according to claim 1, characterized in that: The model of the main control board is MCTC-MCB-C series.

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