Elevator safety control system and elevator

Abstract

The application relates to an elevator safety control system and an elevator. A pit control box is arranged on the sidewall of an elevator shaft pit, a control circuit board is arranged in the pit control box, a short piece position is configured to select a shallow pit mode, a small top layer mode or a shallow pit small top layer mode, the working states of elevator state detection switch groups are controlled and monitored through a safety switch interface group in the three modes, the safety node states of the elevator are centrally controlled and monitored through the control circuit board, corresponding alarm conditions are triggered through an alarm output interface group, maintenance personnel are informed, a safe refuge space has been constructed for the maintenance personnel, the maintenance personnel are prevented from being hurt, and elevator protection facilities are prevented from being damaged.

Description

Technical Field

[0001] This utility model relates to an elevator safety control system and an elevator, belonging to the field of elevator technology. Background Technology

[0002] As people pursue a higher quality of life, the demand for elevators in residential buildings and private elevators in homes is increasing. However, in some existing buildings, the distance between the top floor and the pit is reduced due to site conditions. This reduction in building size and spacing results in: a smaller space for the top floor and pit; a smaller car top railing; a smaller height for the car's retractable footboard; and due to site limitations, many elevator shafts can only be designed with a shallow pit, a small top floor, or a combination of a shallow pit and a small top floor.

[0003] Because this type of elevator does not provide sufficient safety space for maintenance personnel, it is difficult to create a adequate safety space before and while personnel enter the shaft to prevent prepared or unprepared people from being crushed when the elevator moves, while also ensuring that the protective facilities are not damaged. Utility Model Content

[0004] The purpose of this utility model is to provide an elevator safety control system and an elevator to solve the above-mentioned problems.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an elevator safety control system, the elevator safety control system comprising:

[0006] The pit control box is mounted on the side wall of the elevator shaft pit.

[0007] The control circuit board is located inside the pit control box and is connected to the elevator control cabinet via signal. The control circuit board is electrically connected to a safety switch interface group, a mode switching shorting plate group, an alarm output interface group, and a control cabinet communication interface group 13. The safety switch interface group is electrically connected to the elevator status detection switch group to control and monitor the working status of the elevator status detection switch group. The alarm output interface group is electrically connected to the alarm component in the shaft. The control cabinet communication interface group 13 is electrically connected to external communication. The mode switching shorting plate group selects the shallow pit mode, the small top floor mode, or the shallow pit small top floor mode by configuring the position of the shorting plate.

[0008] Furthermore, the elevator status detection switch group includes a hall door safety switch, a car stop device status detection switch, a counterweight stop device status detection switch, a retractable guardrail status detection switch, and a retractable footboard status detection switch.

[0009] Furthermore, the control circuit board also includes a limit control relay group and a delay control circuit. The input terminal of the limit control relay group is connected to the car stop device status detection switch and the counterweight stop device status detection switch. The output terminal of the limit control relay group is connected to the elevator's down limit bypass circuit and up limit bypass circuit, and keeps the down limit switch enabled when the down limit bypass is released, and keeps the up limit switch enabled when the up limit bypass is released. The input terminal of the delay control circuit is connected to the car stop device status detection switch and the counterweight stop device status detection switch, and the output terminal of the delay control circuit is connected to the power control circuit of the audible and visual alarm.

[0010] Furthermore, the elevator safety control system also includes a key reset switch assembly, which includes a reset button with a mechanical lock and a reset status detection switch connected to the control circuit board.

[0011] Furthermore, both the car stop and the counterweight stop are equipped with a double-contact detection switch, which includes a working position contact and a reset position contact. The working position contact and the reset position contact are respectively connected to the input interface of the control circuit board.

[0012] Furthermore, the pit control box is equipped with a reserved expansion interface for the detachable installation of a pit maintenance socket and / or a lighting switch module.

[0013] Furthermore, the alarm component includes a pit audible and visual alarm and a shaft top audible and visual alarm, both driven independently through the alarm output interface group.

[0014] This application also provides an elevator, including the elevator safety control system described above.

[0015] The beneficial effects of this utility model are as follows: This application sets up a pit control box on the side wall of the elevator shaft pit, and sets up a control circuit board inside the pit control box. By configuring the position of the shorting piece, the shallow pit mode, the small top floor mode, or the shallow pit small top floor mode can be selected. In the three modes, the working status of the elevator status detection switch group is controlled and monitored through the safety switch interface group. This realizes the centralized control and monitoring of the elevator safety node status using the control circuit board, and triggers the corresponding alarm through the alarm output interface group to inform the maintenance personnel. A safe refuge space has been constructed for the maintenance personnel, avoiding injury to the maintenance personnel and also preventing damage to the elevator safety facilities.

[0016] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings. Attached Figure Description

[0017] Figure 1 This is a layout diagram of the control circuit board of an elevator safety control system according to an embodiment of this application;

[0018] Figure 2 This is a structural block diagram of an elevator safety control system according to an embodiment of the application. Detailed Implementation

[0019] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.

[0020] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "axial", "radial", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0021] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0022] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances. Furthermore, in this utility model, unless otherwise explicitly specified and limited, "on" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact through an intermediate medium.

[0023] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0024] Please refer to Figures 1 to 2 An elevator safety control system according to an embodiment of this application includes a pit control box 10 and a control circuit board 11 disposed in the pit control box 10. The pit control box 10 is hung on the side wall of the elevator shaft pit.

[0025] The control circuit board 11 is located inside the pit control box 10 and is signal-connected to the elevator control cabinet 20. The control circuit board 11 is electrically connected to a safety switch interface group 12, a mode switching jumper group, an alarm output interface group 14, and a control cabinet communication interface group 13. The safety switch interface group 12 is electrically connected to the elevator status detection switch group to control and monitor its operating status. The alarm output interface group 14 is electrically connected to the alarm components in the hoistway. The control cabinet communication interface group 13 is electrically connected to the external communication 21. The mode switching jumper group allows selection of shallow pit mode, small top floor mode, or shallow pit small top floor mode by configuring the jumper positions. It should be noted that the external communication 21 here refers to the control board used on each floor to control the elevator's movement.

[0026] In one embodiment, the elevator status detection switch group includes a hall door safety switch 121, a car stop device status detection switch 123, a counterweight stop device status detection switch 122, a retractable guardrail status detection switch 124, and a retractable footboard status detection switch 125. A retractable guardrail 22 is installed on the top of the elevator car. The retractable guardrail 22 is electrically connected to the elevator control cabinet 20 to control its retraction or extension. During normal operation, the retractable guardrail 22 is in the retracted state; during maintenance, the retractable guardrail 22 is in the extended state to protect the personal safety of maintenance personnel. The telescopic foot guard 23 is installed at the bottom of the elevator to protect the components at the bottom of the elevator. It is also controlled to extend or retract through the elevator cabinet. Three sets of limit switches are required for the telescopic foot guard 23: one for extension, one for retraction, and one for pit. The extension limit switch can monitor its safe extension. If it is not extended, the elevator cannot be opened for maintenance. The retraction limit switch can monitor its safe retraction. If it is not in the correct position, the elevator can only be in maintenance mode. The pit limit switch is used to limit the extension to prevent collision with the pit. The limit switch is installed on the guide rail or pit and is in a dormant state during normal operation. Correspondingly, three sets of status detection switches are also required to detect its working status.

[0027] In one embodiment, the control circuit board 11 further includes a limit control relay group and a delay control circuit. The input terminal of the limit control relay group is connected to the car stop status detection switch 123 and the counterweight stop status detection switch 122. The output terminal of the limit control relay group is connected to the elevator's down limit bypass circuit and up limit bypass circuit. When the down limit bypass is released, the down limit switch remains enabled, and when the up limit bypass is released, the up limit switch remains enabled. The input terminal of the delay control circuit is connected to the car stop status detection switch 123 and the counterweight stop status detection switch 122. The output terminal of the delay control circuit is connected to the power control circuit of the audible and visual alarm.

[0028] In one embodiment, the elevator safety control system further includes a key reset switch assembly, which includes a reset button with a mechanical lock and a reset status detection switch connected to the control circuit board 11. The reset button is installed on the elevator hall door on each floor to unlock or lock the elevator hall door. The mechanical lock is located on the outside of the elevator hall door and is manually unlocked or locked using a triangular key. The reset status detection switch is connected to the inside of the door to detect the status of the reset button.

[0029] In one embodiment, both the car stop and the counterweight stop are equipped with a double-contact detection switch. The double-contact detection switch includes a working position contact and a reset position contact, which are respectively connected to the input interface of the control circuit board 11.

[0030] In one embodiment, the pit control box 10 is provided with a reserved expansion interface for the detachable installation of a pit maintenance socket and / or a lighting switch module.

[0031] In one embodiment, the alarm components include a pit audible and visual alarm and a shaft top audible and visual alarm, each independently driven via alarm output interface group 14. By installing alarms in the pit and at the shaft top, maintenance personnel are alerted to the location requiring maintenance, thus creating a safe maintenance space.

[0032] This application also provides an elevator, including the elevator safety control system described above.

[0033] This application involves installing a pit control box on the side wall of the elevator shaft pit, and setting up a control circuit board inside the pit control box. By configuring the position of the shorting piece, the application selects between shallow pit mode, small top floor mode, or shallow pit small top floor mode. In these three modes, the application controls and monitors the working status of the elevator status detection switch group through a safety switch interface group. This allows for centralized control and monitoring of the elevator safety node status using the control circuit board, and triggers corresponding alarms through an alarm output interface group to notify maintenance personnel. This demonstrates that a safe refuge space has been created for maintenance personnel, preventing injury to them and damage to the elevator safety facilities.

[0034] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0035] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. An elevator safety control system, characterized by The elevator safety control system includes: The pit control box is mounted on the side wall of the elevator shaft pit. The control circuit board is arranged in the pit control box and is connected to the elevator control cabinet. The control circuit board is electrically connected to a safety switch interface group, a mode switching shorting plate group, an alarm output interface group and a control cabinet communication interface group (13). The safety switch interface group is electrically connected to the elevator status detection switch group to control and monitor the working status of the elevator status detection switch group. The alarm output interface group is electrically connected to the alarm component in the shaft. The control cabinet communication interface group (13) is electrically connected to the external communication. The mode switching shorting plate group selects the shallow pit mode, the small top floor mode or the shallow pit small top floor mode by configuring the position of the shorting plate.

2. The elevator safety control system of claim 1, wherein, The elevator status detection switch group includes a hall door safety switch, a car stop device status detection switch, a counterweight stop device status detection switch, a retractable guardrail status detection switch, and a retractable footboard status detection switch.

3. The elevator safety control system of claim 2, wherein, The control circuit board also includes a limit control relay group and a delay control circuit. The input terminal of the limit control relay group is connected to the car stop device status detection switch and the counterweight stop device status detection switch. The output terminal of the limit control relay group is connected to the elevator's down limit bypass circuit and up limit bypass circuit. When the down limit bypass is released, the down limit switch remains enabled, and when the up limit bypass is released, the up limit switch remains enabled. The input terminal of the delay control circuit is connected to the car stop device status detection switch and the counterweight stop device status detection switch. The output terminal of the delay control circuit is connected to the power control circuit of the audible and visual alarm.

4. The elevator safety control system of claim 3, wherein, The elevator safety control system also includes a key reset switch assembly, which includes a reset button with a mechanical lock and a reset status detection switch connected to the control circuit board.

5. The elevator safety control system of claim 4, wherein, Both the car stop and the counterweight stop are equipped with a double-contact detection switch. The double-contact detection switch includes a working position contact and a reset position contact, which are respectively connected to the input interface of the control circuit board.

6. The elevator safety control system of claim 5, wherein, The pit control box is equipped with a reserved expansion interface, which is used for the detachable installation of pit maintenance sockets and / or lighting switch modules.

7. The elevator safety control system as described in claim 6, characterized in that, The alarm components include a pit audible and visual alarm and a shaft top audible and visual alarm, both driven independently through the alarm output interface group.

8. An elevator, characterized in that, The elevator safety control system includes any one of claims 1 to 7.

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