Detection expansion circuit board for elevator and elevator

Abstract

The utility model relates to a detection expansion circuit board for an elevator and the elevator. The detection expansion circuit board comprises a power supply circuit which is provided with a plurality of sub-circuits and a plurality of control switches respectively corresponding to the plurality of sub-circuits, and the sub-circuits are connected with a brake component and used for supplying power to the brake component; and the controller is used for independently controlling on and off of each sub-circuit. By arranging the detection expansion circuit board, on the basis that original standard design is not affected, the grouping self-checking function can be achieved, when a part of safety loop, an emergency electric and door lock bypass disconnection safety loop and a door lock bypass disconnection safety loop are built on the detection expansion circuit board, the circuit of the part is overhauled and bypassed, and overhauling priority is achieved; the main safety loop cannot be activated if the door lock bypass state is not opened after overhaul is completed, overhaul safety is ensured, in addition, the tedious problem that a peripheral circuit needs to be additionally built is effectively solved by detecting integration of related circuits of the expansion circuit board, and the reliability of the system is ensured.

Description

Technical Field

[0001] The present application belongs to the field of elevator manufacturing, and in particular, relates to a detection expansion circuit board for an elevator and an elevator. Background Art

[0002] According to the latest standard requirements, the self-inspection of elevator holding brakes needs to be adjusted from overall 24-hour self-inspection to group 24-hour self-inspection. In the current elevator design, the main control unit does not take this change into account, so the hardware needs to be redesigned. In order to meet the new requirements, the main control unit of the installed elevator needs to be replaced, and this modification will lead to a significant increase in costs.

[0003] According to the further requirements of the latest standards, the provisions for door lock bypass devices have been increased. The door lock bypass device should be able to achieve safety control by partially short-circuiting the door lock safety circuit in the event of emergency power or maintenance. In order to ensure that the short-circuit state is released in time to ensure the safe operation of the elevator, it must be effectively linked to the safety circuit. Utility Model Content

[0004] One purpose of the present application is to provide a detection expansion circuit board, which can realize group self-checking without affecting the original standard design. In addition, the detection expansion circuit board also integrates parts or functions that need to be added, such as a safety circuit.

[0005] The purpose of the present application is to achieve the following technical solution: a detection expansion circuit board for an elevator, the elevator comprising a brake, the brake comprising at least two groups of brake components, the detection expansion circuit board comprising:

[0006] A power supply circuit, comprising a plurality of sub-circuits and a plurality of control switches respectively corresponding to the plurality of sub-circuits, wherein one of the sub-circuits is connected to a brake component to supply power to the brake component;

[0007] The controller is connected to the plurality of control switches and is used to independently control the opening and closing of each of the sub-circuits.

[0008] Optionally, the detection expansion circuit board further includes: a power access module connected to both an external power supply and the power supply circuit.

[0009] Optionally, the number of the sub-circuits is greater than or equal to the number of the braking components.

[0010] Optionally, the detection expansion circuit board further includes a safety circuit unit, and the safety circuit unit is connected to the total safety circuit of the elevator.

[0011] Optionally, the total safety circuit includes a door lock bypass circuit, and the door lock bypass circuit includes a first auxiliary switch;

[0012] The safety circuit unit is configured to be in an off state when the first auxiliary switch is turned on.

[0013] Optionally, the safety loop unit includes a second auxiliary switch, and the second auxiliary switch and the first auxiliary switch form an interlocking switch.

[0014] Optionally, the safety circuit unit includes a main safety circuit, at least one first sub-safety circuit and a plurality of second sub-safety circuits;

[0015] The first sub-safety circuit is connected in series to the main safety circuit, and a plurality of second sub-safety circuits are connected in parallel to the main safety circuit.

[0016] Optionally, the controller is a relay, and a rated current of the relay is greater than an operating current of the braking component.

[0017] Optionally, it further comprises a communication module, wherein the communication module is configured to be connected to both the main control module of the elevator and the controller;

[0018] The communication module and the detection expansion circuit board further include a monitoring unit, and the monitoring unit is used to monitor data interaction.

[0019] In particular, the utility model also provides an elevator, comprising the aforementioned detection expansion circuit board.

[0020] According to the solution of the utility model, a detection expansion circuit board is adopted, which has a power supply circuit and a controller. The power supply circuit includes multiple sub-circuits and multiple control switches. Each sub-circuit is connected to a braking component to realize power supply to the braking component. At the same time, the controller can independently control the opening and closing state of each sub-circuit, so that the function of group self-inspection is realized without affecting the original standard design.

[0021] Furthermore, by configuring part of the safety circuit on the detection expansion circuit board, when the door lock bypass circuit is activated, the safety circuit unit can be cut off by bypassing part of the circuit at the same time to ensure that the maintenance is carried out first. After the maintenance is completed, if the door lock bypass state is not released, the total safety circuit will not be activated, thereby effectively ensuring the safety of maintenance.

[0022] Furthermore, by integrating the detection and expansion circuit board related circuits, the cumbersome problem of needing to build additional peripheral circuits is effectively solved, ensuring the reliability of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of the detection expansion circuit board of the present application;

[0024] Figure 2It is a schematic diagram of the structure of the detection circuit connected to the detection expansion circuit board of the present application;

[0025] Figure 3 The present application includes a schematic diagram of a safety circuit for detecting an expansion circuit board;

[0026] Figure 4 yes Figure 3 A schematic enlarged view of the safety circuit unit that detects the extension circuit board part. DETAILED DESCRIPTION

[0027] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. It is to be understood that the specific embodiments described herein are only used to explain the present application, rather than to limit the present application. It should also be noted that, for ease of description, only some structures related to the present application are shown in the accompanying drawings, rather than all structures. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0028] The terms "including" and "having" and any variations thereof in this application are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device comprising a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products or devices.

[0029] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0030] The detection expansion circuit board of the embodiment of the present application is suitable for realizing the function of group self-test without affecting the original standard design. The detection expansion circuit board is used in an elevator, and the elevator includes a brake, and the brake includes at least two groups of brake components 12, and the brake component 12 can be a holding brake, for example.

[0031] Figure 1 Schematic diagram of the structure of the detection expansion circuit board of the embodiment of the present application. Figure 1The detection expansion circuit board includes a power supply circuit and a controller. The power supply circuit has a plurality of sub-circuits 11 and a plurality of control switches corresponding to the plurality of sub-circuits 11, wherein one of the sub-circuits 11 is connected to a brake component 12 to supply power to the brake component 12. The controller is connected to the plurality of control switches to independently control the opening and closing of each sub-circuit 11.

[0032] Figure 2 Schematic diagram of the detection circuit structure connected to the detection expansion circuit board of the embodiment of the present application. Figure 2 In the embodiment of the present application, the detection expansion circuit board is independently designed to meet the demand for independent control and power supply of each group of brake components 12. To achieve this purpose, an independently controllable sub-circuit 11 is set on the circuit board, and the sub-circuit 11 can independently control the power supply of a single group of brake components 12, and the sub-circuit 11 is controlled by a controller. In the existing design, the detection requirement for the brake is an overall detection, and the main control module includes a torque detection related processing module, and the main control module can receive and process the signal of the torque detection component. However, due to the lack of separate line connections between the various brake components 12, the hardware configuration in the existing design cannot control each group of brake components 12 separately. The detection expansion circuit board of the embodiment of the present application solves the problem of separate control and power supply by setting an independent sub-circuit 11.

[0033] During detection, it is necessary to configure the corresponding detection strategy, start a single group of brake components 12 respectively, and test whether the corresponding brake components 12 can be lifted or released correctly to determine whether each group of brake mechanical components is normal. To achieve this goal, a processing module is set up, which controls the controller according to the corresponding strategy, and the processor generates a control signal and sends it to the control switch. The control switch is set on each sub-circuit 11 and is responsible for the specific execution of the circuit opening and closing operations. Through the above settings, when the detection expansion circuit board is connected to the existing system, the power supply opening and closing operations of the single group of brake components 12 can be realized, which makes up for the shortcomings of the existing system in group control power supply and detection. It is worth noting that the original braking force detection components and related hardware structures do not need to be modified, and can still be detected and processed by the main control module. By introducing a detection expansion circuit board, the changes in the new national standard for brake detection requirements can be met, and the goal of group detection can be achieved.

[0034] In one embodiment, the detection expansion circuit board further includes a power access module. The power access module is configured to be connected to both the external power supply and the power circuit. For example, two contacts are provided on the detection expansion circuit board, the two contacts are connected to the external power supply, and the circuit connection line is formed inside the detection expansion circuit board.

[0035] In one embodiment, the number of sub-circuits 11 is greater than or equal to the number of brake components 12. The detection expansion circuit board achieves flexible adaptation to the requirements of different numbers of brake components 12 by providing multiple circuits. For example, the detection expansion board can be provided with three sub-circuits 11, which are applied to the case of two brake components 12. When applied, only two of the sub-circuits 11 in the detection expansion board need to be connected. Similarly, if applied to the case of three brakes, three sub-circuits 11 can be enabled at the same time. Through the above-mentioned setting method, the detection expansion circuit board can be flexibly applied in different situations.

[0036] Figure 3 The embodiment of the present application includes a safety circuit diagram for detecting an expansion circuit board. Figure 4 yes Figure 3 Schematic enlarged view of the safety circuit unit that detects the expansion circuit board section. Figure 3 and Figure 4 The detection expansion circuit board also includes a safety circuit unit. The safety circuit unit is connected to the total safety circuit of the elevator. The safety circuit unit is integrated in the detection expansion circuit board to integrate the required additional safety circuit control nodes into the detection expansion circuit board, thereby realizing the supplement of multiple functions through one detection expansion circuit board.

[0037] The total safety circuit includes a door lock bypass circuit, which includes a first auxiliary switch. The safety circuit unit is configured to be in an off state when the first auxiliary switch is turned on. The safety circuit unit includes a second auxiliary switch, which forms an interlocking switch with the first auxiliary switch. The door lock bypass circuit is used to bypass part of the circuit during maintenance to achieve maintenance priority. If the conduction state of the door lock bypass circuit is not released, the second auxiliary switch on the safety circuit unit will be disconnected because the first auxiliary switch and the second auxiliary switch are interlocking switches. That is, the safety circuit unit will not be turned on if the technician does not release it. That is, if the door lock bypass state is not opened after the maintenance is completed, the total safety circuit cannot be activated, which effectively avoids the possibility of the elevator running normally in the maintenance state due to the negligence of the operator, thereby ensuring the safety of the maintenance process.

[0038] In one embodiment, the safety circuit unit includes a main safety circuit, at least one first sub-safety circuit and a plurality of second sub-safety circuits. The first sub-safety circuit is connected in series to the main safety circuit, and the plurality of second sub-safety circuits are connected in parallel to the main safety circuit. By connecting the second sub-safety circuits in parallel to the main safety circuit, the corresponding safety circuit unit part can be turned on by selecting one of the plurality of second sub-safety circuits.

[0039] In one embodiment, the controller is a relay, and the rated current of the relay is greater than the working current of the brake component 12. By setting the size of the rated current of the relay, it is ensured that the normal operation of each component under the safe current can be ensured. The working current of the brake component 12 is first determined, and then the type is selected according to the working current.

[0040] In one embodiment, the detection expansion circuit board also includes a communication module, and the communication module is configured to be connected to the main control module and the controller of the elevator. The communication module also includes a monitoring unit, and the monitoring unit is used to monitor data interaction. The detection expansion circuit board provided in the present application can be independently powered when used, or it can be directly connected to the relevant detection components, and abnormal judgment and signal are realized by detecting the expansion circuit board. The current main control module has been connected to the detection component. The preferred solution is to still use the main control module to process the detection signal. In order to ensure the interaction effect, the processor on the detection expansion circuit board is required to synchronize data with the main control module, and the communication module is set to synchronize the detection-related data, so that more related hardware of the main control module in the original design can be used. On this basis, the detection expansion circuit board does not need to design the function of signal processing, thereby reducing the design difficulty and reducing the manufacturing cost. The processor on the detection expansion circuit board exchanges data with the main control module through the communication module. The main control module sends information to the processor, and the processor controls the subcircuit 11 according to the setting. After the interactive information is correctly synchronized, the detection signal is processed by the main control module. Therefore, in this preferred embodiment, the communication module is the basis for realizing the above functions. The specific interaction form of the communication module can be RS232, RS485, network port and other specific communication forms. At the same time, the accuracy and timeliness of data interaction are ensured through the communication module.

[0041] The present application further provides an elevator, which includes the aforementioned detection expansion circuit board.

[0042] The scheme is described below in conjunction with a specific implementation method.

[0043] In the designed detection expansion circuit board, the design for the power supply part includes a power contact contact, a communication unit contact, three positive contacts and one negative contact. The power contact contacts include a positive power contact and a negative power contact. The external power supply is connected to the positive power contact and the negative power contact respectively. The three positive contacts are connected to the positive power contact to form three sub-circuits 11. Relays are connected in series on each sub-circuit 11. The relays serve as switches to control multiple sub-circuits 11. The number of communication unit contacts can be selected as four and connected to the main control module. Inside the detection expansion circuit board, the controller It is connected to the communication unit contact through the internal board line to establish a communication connection between the main control module and the controller. The control signal output end of the controller is connected to the relay to control the relay, thereby controlling the switch of the sub-circuit 11. The negative contact is directly connected to the negative power contact through the internal board line. When designing the detection expansion circuit board, in order to distinguish between the power access contacts and the negative contacts, the positions of the detection expansion circuit board are arranged in zones for each connection part. The related connection contacts are formed together, arranged in different areas and can be set with corresponding labels, so as to facilitate the distinction and provide convenience for the assembly process.

[0044] A positive contact is connected to a brake, and the brake is powered respectively. The negative pole of the brake is connected to the negative contact. In the detection expansion circuit board, the negative contact is connected to the negative contact of the power supply through a line. The brake is powered in groups through the above loop. The specific process is to control the switch of the relay through the controller to control the on and off of the sub-circuit 11. The main control module exchanges data with the controller on the detection expansion circuit board according to the detection strategy. The controller controls a single group of brakes according to the detection strategy. The relevant signal is sent to the main control module through the original feedback system. The main control module analyzes the signal and gives a judgment conclusion.

[0045] Figure 4 yes Figure 3 For a schematic enlarged diagram of the safety circuit unit for detecting the expansion circuit board part, see Figure 4For the safety circuit part in the detection expansion circuit board, five groups of contacts are set, each group of contacts includes an introduction contact and a lead-out contact, and the specific structure is as follows: including a first introduction contact 21, a first lead-out contact 22, a second lead-out contact 23, a second introduction contact 24, a third lead-out contact 25, a third introduction contact 26, a fourth lead-out contact 27, a fourth introduction contact 28, a fifth lead-out contact 29, and a fifth introduction contact 30. The first introduction contact 21 and the second lead-out contact 23 are connected through an internal circuit, the second introduction contact 24 is connected to the third lead-out contact 25, the fourth lead-out contact 27, and the fifth lead-out contact 29 through an internal circuit, and the third introduction contact 26 and the fourth introduction contact 28 are connected to the first lead-out contact 22 through an internal circuit. In the above manner, the third group of contacts including the third lead-out contact 25 and the third lead-in contact 26 and the fourth group of contacts including the fourth lead-out contact 27 and the fourth lead-in contact 28 are respectively used to connect different circuits. As long as one circuit is connected, the safety circuit of that part can be turned on. By setting the third group of contacts and the fourth group of contacts in parallel, the function of turning on the corresponding safety circuit when one of them is turned on can be achieved, thereby achieving the application requirement of turning on the corresponding safety circuit when one of the multiple circuits is turned on.

[0046] Of course, the above content is a specific implementation method, and those skilled in the art can make adaptive adjustments according to relevant principles and requirements to obtain a specific technical solution.

[0047] From the foregoing, it can be seen that the present application, by setting up a detection expansion circuit board, can realize the function of group self-test without affecting the original standard design, build a part of the safety circuit on the detection expansion circuit board, and the emergency electric and door lock bypass disconnect the safety circuit. When the door lock bypass disconnects the safety circuit, the maintenance bypasses this part of the circuit to realize maintenance priority. After the maintenance is completed, if the door lock bypass state is not opened continuously, the total safety circuit cannot be activated, thereby ensuring the safety of maintenance. In addition, through the integration of the relevant circuits of the detection expansion circuit board, the cumbersome problem of needing to build additional peripheral circuits is effectively solved, thereby ensuring the reliability of the system.

[0048] The above is only a specific implementation of the present application, and any other improvements made based on the concept of the present application are deemed to be within the protection scope of the present application.

Claims

1. A detection expansion circuit board for an elevator, characterized in that: The elevator includes a brake, the brake includes at least two groups of brake components, and the detection expansion circuit board includes: A power supply circuit, comprising a plurality of sub-circuits and a plurality of control switches respectively corresponding to the plurality of sub-circuits, wherein one of the sub-circuits is connected to a brake component to supply power to the brake component; The controller is connected to the plurality of control switches and is used to independently control the opening and closing of each of the sub-circuits.

2. The detection expansion circuit board according to claim 1, characterized in that: Also includes: The power access module is connected to both the external power supply and the power circuit.

3. The detection expansion circuit board according to claim 1, characterized in that: The number of the sub-circuits is greater than or equal to the number of the braking components.

4. The detection expansion circuit board for an elevator according to any one of claims 1 to 3, characterized in that: It also includes a safety circuit unit, which is connected to the total safety circuit of the elevator.

5. The detection expansion circuit board according to claim 4, characterized in that: The total safety circuit includes a door lock bypass circuit, and the door lock bypass circuit includes a first auxiliary switch; The safety circuit unit is configured to be in an off state when the first auxiliary switch is turned on.

6. The detection expansion circuit board according to claim 5, characterized in that: The safety circuit unit includes a second auxiliary switch, and the second auxiliary switch and the first auxiliary switch form an interlocking switch.

7. The detection expansion circuit board according to claim 4, characterized in that: The safety circuit unit comprises a main safety circuit, at least one first sub-safety circuit and a plurality of second sub-safety circuits; The first sub-safety circuit is connected in series to the main safety circuit, and a plurality of second sub-safety circuits are connected in parallel to the main safety circuit.

8. The detection expansion circuit board according to claim 1, characterized in that: The controller is a relay, and a rated current of the relay is greater than an operating current of the brake component.

9. The detection expansion circuit board according to claim 1, characterized in that: It also includes a communication module, which is configured to be connected to both the main control module of the elevator and the controller; The communication module further includes a monitoring unit, and the monitoring unit is used to monitor data interaction.

10. An elevator, characterized in that: It comprises a detection expansion circuit board as described in any one of claims 1-9.

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