Maintenance delisting interlocking device

Abstract

The utility model discloses a maintenance picking interlocking device. The device comprises a control unit; the interlocking unit comprises a plurality of workshop section control modules which are connected in parallel, and the output ends of the workshop section control modules are electrically connected with the input end of the control unit; the workshop section control module comprises a first-stage control assembly and a plurality of second-stage control assemblies, the second-stage control assemblies are connected in parallel, and the first-stage control assembly and the second-stage control assemblies are connected in series. According to the overhaul delisting interlocking device provided by the embodiment of the utility model, the interlocking unit is divided into the plurality of workshop section control modules, and each workshop section control module adopts a two-stage connection mechanism of the first-stage control assembly and the plurality of second-stage control assemblies; when maintenance is needed, the corresponding control assembly can be started, so that the control unit is in a non-working state; and after the maintenance is completed, the control unit is enabled to be in a working state only when the two stages of control assemblies are enabled to be in a non-starting state, so that the safety of personnel and equipment in a maintenance state is ensured.

Description

Technical Field

[0001] This utility model relates to a maintenance and tag removal interlocking device, belonging to the field of production equipment technology. Background Technology

[0002] During the production process, equipment needs to be inspected and maintained periodically. Therefore, maintenance personnel must ensure that the equipment is stopped and its energy has been released before commencing work to guarantee personal and equipment safety. Current maintenance accidents often result from a lack of communication between maintenance and operating personnel. This may be due to lengthy production lines, preventing maintenance information from being relayed to personnel in other processes. Therefore, a device is needed to accurately locate the maintenance position and status, ensuring the safety of personnel and equipment and enabling smooth maintenance. Utility Model Content

[0003] Therefore, the purpose of this utility model is to provide a maintenance and tag removal interlocking device to improve the protection of equipment and personnel during equipment maintenance.

[0004] To achieve the above objectives, this utility model provides a maintenance and tag removal interlocking device, comprising:

[0005] Control unit;

[0006] The interlocking unit includes multiple parallel section control modules, the output of which is electrically connected to the input of the control unit; each section control module includes a primary control component and multiple secondary control components, which are connected in parallel, and the primary control component and the secondary control component are connected in series.

[0007] Furthermore, it also includes a display component, which includes multiple indicator lights, and the secondary control component is connected to the indicator lights one by one through an interface component.

[0008] Furthermore, the secondary control component includes a first switch and a second switch connected in series.

[0009] Furthermore, the control unit is a programmable logic controller.

[0010] Furthermore, the section control module and the control unit are connected via a communication unit.

[0011] Furthermore, the interlocking unit also includes a power supply module, the power supply voltage of which is 24V.

[0012] Furthermore, the primary control component and the secondary control component are respectively knobs that are turned by a key. Using the above technical solution, the maintenance and de-tagging interlocking device provided in this embodiment of the utility model divides the interlocking unit into multiple work section control modules, and each work section control module adopts a two-level connection mechanism of a primary control component and multiple secondary control components. During maintenance, the corresponding control component can be activated, thereby putting the control unit in a non-working state. After maintenance is completed, the control unit will only be put into a working state when both levels of control components are in a non-activated state, thus ensuring the safety of personnel and equipment during maintenance. Attached Figure Description

[0013] Figure 1 A structural block diagram of a maintenance and tag removal interlocking device provided by this utility model;

[0014] Figure 2 A structural schematic diagram of a maintenance and tag removal interlocking device provided by this utility model;

[0015] Figure 3 This is a schematic diagram of the primary control component and the secondary control component in a maintenance and tag removal interlocking device provided by this utility model. Detailed Implementation

[0016] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. In existing enterprises, due to a lack of communication between maintenance personnel and operators during equipment maintenance, the equipment may not be in a stopped state, and energy may not be released, thus causing damage to both maintenance personnel and the equipment itself. Therefore, a device is needed to confirm the location and status of maintenance.

[0017] Example

[0018] like Figures 1 to 3 As shown, this utility model provides a maintenance and tag removal interlocking device, comprising:

[0019] Control unit; wherein the control unit includes, but is not limited to, a programmable logic controller (PLC).

[0020] The interlocking unit includes multiple parallel section control modules, the output of which is electrically connected to the input of the control unit; each section control module includes a primary control component and multiple secondary control components, which are connected in parallel, and the primary control component and the secondary control component are connected in series.

[0021] The section control module and the control unit are connected via a communication unit. The choice of communication unit depends on the PLC type; for example, if the PLC is an S7-400 PLC, the communication module could be a 6GK7443-1EX20-0XE0, using Ethernet communication via a network cable. The section control module requires a power supply module, such as a 24V DC power supply.

[0022] It should be noted that the aforementioned maintenance and removal interlocking device also includes a display component, which comprises multiple indicator lights. The secondary control component is connected to each indicator light via an interface component, reflecting the operating status of the secondary control component. Additionally, the primary control component also has corresponding indicator lights to display its operating status. Furthermore, depending on the complexity of the equipment under maintenance, the secondary control component can be subdivided into multiple sub-level controllers, such as a first switch and a second switch. Each switch can be equipped with a corresponding indicator light to indicate its operating status; for example, a green indicator light indicates that the equipment under maintenance is in operation, while a red indicator light indicates that the equipment is under maintenance.

[0023] In a preferred embodiment, the primary and secondary control components are respectively knobs that can be turned with a key. When the equipment requires maintenance, the corresponding knob is turned by selecting the corresponding key, changing the knob from the original green "working" position to the red "maintenance" position. Furthermore, it can be selected that the key cannot be removed in the "working" and / or "maintenance" positions to further indicate the current status of the equipment to the operator. It is worth noting that the keys for the various secondary control components are not interchangeable, thus ensuring the accuracy of the status display.

[0024] The specific working method of the above-mentioned maintenance and de-signing interlocking device is as follows: the control unit used is an S7-400 PLC, the communication unit is a Siemens 153-4, and the communication method is Ethernet communication connected by network cable; the above interface components include input device 6ES7321-1BH02-0AA0 and output device 6ES7322-1BH01-0AA0.

[0025] When equipment maintenance is required, the maintenance personnel use the key to turn the knob (secondary control component) corresponding to the part to be maintained and pull it out, so that the corresponding indicator light changes from "working" (green) to "maintenance" (red). In the "maintenance" position, the key of the primary control component and one key of the corresponding secondary control component (e.g., 1SA1 and SA11-1 or SA11-2) are pulled out. After maintenance is completed, the corresponding key is inserted back and the knob is rotated until all indicator lights are green, then the equipment is in an operational state.

[0026] The maintenance and de-tagging interlocking device provided in this embodiment of the utility model divides the interlocking unit into multiple section control modules, and each section control module adopts a two-level connection mechanism of primary control components and multiple secondary control components. When maintenance is required, the corresponding control components can be activated, thereby putting the control unit in a non-working state. After maintenance is completed, the control unit will only be put into a working state when both levels of control components are in a non-activated state, thereby ensuring the safety of personnel and equipment during maintenance.

[0027] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A maintenance and tag removal interlocking device, characterized in that, include: Control unit; The interlocking unit includes multiple parallel section control modules, the output of which is electrically connected to the input of the control unit; The section control module includes a primary control component and multiple secondary control components. The multiple secondary control components are connected in parallel, and the primary control component and the secondary control component are connected in series.

2. The maintenance and tag removal interlocking device as described in claim 1, characterized in that: It also includes a display component, which includes multiple indicator lights, and the secondary control component is connected to the indicator lights one by one through an interface component.

3. The maintenance and tag removal interlocking device as described in claim 1, characterized in that: The secondary control component includes a first switch and a second switch connected in series.

4. The maintenance and tag removal interlocking device as described in claim 1, characterized in that: The control unit is a programmable logic controller.

5. The maintenance and tag removal interlocking device as described in claim 1, characterized in that: The section control module and the control unit are connected via a communication unit.

6. The maintenance and tag removal interlocking device as described in claim 1, characterized in that: The interlocking unit also includes a power supply module, which has a power supply voltage of 24V.

7. The maintenance and tag removal interlocking device as described in claim 1, characterized in that: The primary control component and the secondary control component are respectively knobs that are turned by a key.

Images