Power switch device for escalator or moving walk fuel dispenser

Abstract

The present disclosure relates to a power switch device for an escalator or moving walkway refueler, enabling an operator to safely operate the escalator or moving walkway refueler and prompting the operator to restore the power supply of the refueler to a normal state. The power switch device includes a power input port, including a first power input terminal and a second power input terminal, for connecting to an input power supply; a power output port, including a first power output terminal and a second power output terminal, for connecting to the escalator or moving walkway refueler, the second power input terminal is connected to the second power output terminal, and a first branch and a second branch connected in parallel are connected between the first power input terminal and the first power output terminal; an electric control on-off device, connected in the first branch, for controlling the on-off of the first branch according to the escalator or moving walkway operation signal; a manual switch, connected in the second branch, for controlling the on-off of the second branch; and a status indicator, for indicating the switch state of the manual switch.

Description

Technical Field

[0001] The present disclosure relates to an oiler for escalators or moving walks, and particularly to a power switch device for an oiler for escalators or moving walks. Background Art

[0002] Escalators or moving walks need to be lubricated, and an automatic oiler is usually provided. The traditional automatic oiler for escalators or moving walks is only activated to oil the escalator or moving walk when the escalator or moving walk is running.

[0003] In some cases, such as during maintenance, the operator needs to operate the oiler. However, it is very dangerous to operate the oiler when the escalator or moving walk is running. Summary of the Invention

[0004] The present disclosure relates to a power switch device for an oiler for escalators or moving walks, which enables an operator to safely operate the oiler for escalators or moving walks and can remind the operator to restore the power supply of the oiler to the normal state.

[0005] According to an embodiment of the present disclosure, there is provided a power switch device for an oiler for escalators or moving walks, including: a power input port, including a first power input terminal and a second power input terminal, for connecting to an input power supply; a power output port, including a first power output terminal and a second power output terminal, for connecting to an oiler for escalators or moving walks, the second power input terminal is connected to the second power output terminal, and a first branch and a second branch are connected in parallel between the first power input terminal and the first power output terminal; an electric control on-off device, connected in the first branch, for controlling the on-off of the first branch according to an escalator or moving walk running signal; a manual switch, connected in the second branch, for controlling the on-off of the second branch; and a status indicator, for indicating the switch state of the manual switch.

[0006] Optionally, the manual switch is a linkage double-pole switch, a first pole switch of the linkage double-pole switch is connected in the second branch for controlling the on-off of the second branch, and a second pole switch of the linkage double-pole switch is connected in series with the status indicator between the first power input terminal and the second power input terminal.

[0007] Optionally, the electrically controlled on-off device includes a first signal input terminal and a second signal input terminal for receiving the escalator or moving walkway operation signal. The first signal input terminal is connected to the first power input terminal, and the second signal input terminal is connected to the first power output terminal. The escalator or moving walkway operation signal is an escalator or moving walkway operation dry contact signal. The first signal input terminal and the second signal input terminal are used to respectively connect one of the two transmission lines for transmitting the escalator or moving walkway operation dry contact signal.

[0008] Optionally, the electrically controlled on-off device includes a relay. The switch side of the relay is connected in the first branch, and the on-off of the switch side of the relay is controlled by the escalator or moving walkway operation signal.

[0009] Optionally, the electrically controlled on-off device includes a first signal input terminal and a second signal input terminal for receiving the escalator or moving walkway operation signal. The first signal input terminal is connected to the first power input terminal, and the second signal input terminal is connected to one end of the control side of the relay. The other end of the control side of the relay is connected to the second power input terminal.

[0010] The escalator or moving walkway operation signal is an escalator or moving walkway operation dry contact signal. The first signal input terminal and the second signal input terminal are used to respectively connect one of the two transmission lines for transmitting the escalator or moving walkway operation dry contact signal.

[0011] Optionally, the power switch device further includes a circuit breaker, which is connected between the first power input terminal and the first power output terminal and is in series with the parallel circuit of the first branch and the second branch.

[0012] Optionally, the escalator or moving walkway operation signal includes an escalator or moving walkway up operation signal and an escalator or moving walkway down operation signal. The electrically controlled on-off device includes a first on-off device and a second on-off device connected in parallel. The first on-off device is used to receive the escalator or moving walkway up operation signal, and the second on-off device is used to receive the escalator or moving walkway down operation signal. Description of the Drawings

[0013] These and / or other aspects, features, and advantages of the present disclosure will become clearer and easier to understand through the following description of the embodiments in conjunction with the drawings, where:

[0014] Figure 1 is a schematic circuit diagram showing a power switch device for an escalator or moving walkway refueler according to an embodiment of the present disclosure;

[0015] Figure 2It is a schematic circuit diagram showing a power switch device for an escalator or moving walkway refueler according to another embodiment of the present disclosure;

[0016] Figure 3 It is a schematic circuit diagram showing a power switch device for an escalator or moving walkway refueler according to another embodiment of the present disclosure;

[0017] Figure 4 It is a schematic circuit diagram showing a power switch device for an escalator or moving walkway refueler according to another embodiment of the present disclosure;

[0018] Figure 5 It is a schematic circuit diagram showing a power switch device for an escalator or moving walkway refueler according to another embodiment of the present disclosure;

[0019] Figure 6 It is a schematic circuit diagram showing a power switch device for an escalator or moving walkway refueler according to another embodiment of the present disclosure. Detailed Description of the Invention

[0020] The present disclosure will be described in detail below with reference to the exemplary embodiments of the present disclosure. However, the present disclosure is not limited to the embodiments described herein and can be implemented in many different forms. The described embodiments are only used to make the present disclosure thorough and complete and to fully convey the concept of the present disclosure to those skilled in the art. The features of the described embodiments can be combined with each other or replaced unless explicitly excluded or excluded according to the context.

[0021] In the present disclosure, unless otherwise clearly stated, "connection" does not mean "direct connection" or "direct contact" must be required, but only electrical connection is required.

[0022]

[0023] Figure 1 As described in the background art section, traditional escalator or moving walkway automatic refuelers are only activated to refuel the escalator or moving walkway when the escalator or moving walkway is running. However, in some cases, such as during maintenance, the operator needs to operate the refueler when the refueler is working, but it is very dangerous to operate the refueler when the escalator or moving walkway is running. Therefore, the present disclosure conceives a power switch device for supplying power to an escalator or moving walkway refueler. Through this power switch device, the escalator or moving walkway refueler can work when the escalator or moving walkway stops running, so as to facilitate the operator to safely operate the refueler, and can also prompt the operator of the power supply state of the refueler to remind the operator to restore the normal state of the power supply of the escalator or moving walkway refueler, that is, the state of automatic refueling only when the escalator or moving walkway is running.It is a schematic circuit diagram showing a power switch device 100 for an escalator or moving walk refueler according to an embodiment of the present disclosure. The power switch device 100 includes a power input port 101, a power output port 102, an electrically controlled on-off device 103, a manual switch 104, and a status indicator 105. The power input port 101 is used to connect to an input power source so as to finally supply power to the escalator or moving walk refueler through the input power source. The power input port 101 includes a first power input terminal Li and a second power input terminal Ni. For example, the first power input terminal Li is a power positive connection terminal, and the second power input terminal Ni is a power negative connection terminal. The power output port 102 is used to connect to the escalator or moving walk refueler and includes a first power output terminal Lo and a second power output terminal No. The second power input terminal Ni is connected to the second power output terminal No. A first branch A and a second branch B are connected in parallel between the first power input terminal Li and the first power output terminal Lo. Since the first branch A and the second branch B are in parallel, as long as any one of the first branch A and the second branch B is connected, the power of the power input port 101 can be transmitted to the power output port 102 to supply power to the escalator or moving walk refueler to start the escalator or moving walk refueler. The electrically controlled on-off device 103 is connected in the first branch A and is used to control the on-off of the first branch according to the escalator or moving walk operation signal. The escalator or moving walk operation signal reflects the operation state of the escalator or moving walk and has different signal states when the escalator or moving walk is operating and stopped. According to different forms of the signal, the electrically controlled on-off device 103 can adopt various implementation manners, such as a relay switch, a semiconductor controllable switch, etc. These switches can all realize the on-off of the switch according to the control signal. For example, the electrically controlled on-off device 103 can include a relay, and the switch side of the relay is connected in the first branch A and its switch side is controlled by the escalator or moving walk operation signal. In addition, the escalator or moving walk operation signal can also be an escalator or moving walk operation dry contact signal. At this time, the electrically controlled on-off device 103 can be only two connection terminals. When the dry contact signal indicates connection, these two connection terminals are connected to make the first branch A connected. When the dry contact signal indicates disconnection, these two connection terminals are not connected to make the first branch A disconnected. This implementation manner will be described in detail below. The manual switch 104 is connected in the second branch B and is used to control the on-off of the second branch B. The manual switch 104 can be any applicable manually openable and closable switch, such as a push-button switch, a knife switch, etc. The status indicator 105 is used to indicate the switch state of the manual switch 104. Under the indication of the status indicator 105, the operator can know whether the current manual switch is in the off state or the on state, thereby reminding the operator to disconnect the manual switch 104 after the operation is completed.The status indicator 105 can be, for example, various indicator lights. The switch state of the manual switch 104 can also be detected in various ways. For example, a mechanical position sensor, an optical sensor, etc. can be used to detect the change in the mechanical state of the manual switch 104. It is also possible to link the power supply switch of the status indicator 105 with the manual switch 104 to enable the status indicator to indicate the switch state of the manual switch 104. That is, when the manual switch 104 is closed, the power supply switch of the status indicator 105 is also closed; when the manual switch 104 is opened, the power supply switch of the status indicator 105 is also opened. Thus, whether the status indicator 105 works (such as the lighting or extinguishing of the indicator light) reflects the switch state of the manual switch 104.

[0024] The method of powering the escalator or moving walkway refueler by the power switch device 100 according to the embodiments of the present disclosure will be described below. The power input port 101 is connected to the input power supply, and the power output port 102 is connected to the escalator or moving walkway refueler. In the normal working state of the escalator or moving walkway refueler, that is, without manual operation, the manual switch 104 is opened, that is, the second branch B is opened, and the power supply of the escalator or moving walkway refueler is controlled by the first branch A. In this state, if the escalator or moving walkway is running, the electronic control on-off device 103 that receives the running signal of the escalator or moving walkway makes the first branch A connected, and the escalator or moving walkway refueler receives the power supply from the input power supply through the first branch A and works; on the contrary, if the escalator or moving walkway stops running, the electronic control on-off device 103 that receives the running signal of the escalator or moving walkway makes the first branch A disconnected, and the escalator or moving walkway refueler cannot receive the power supply from the input power supply and thus cannot work. In the case where an operator needs to operate the escalator or moving walkway refueler, for safety, the escalator or moving walkway stops running, so the first branch A is disconnected. The operator manually closes the manual switch 104, and the escalator or moving walkway refueler receives the power supply from the input power supply through the second branch B and works. After the operator finishes the operation, the manual switch 104 is manually opened to stop the escalator or moving walkway refueler from working. However, in this case, without the indication of the status indicator 105, after the operator finishes the operation on the escalator or moving walkway refueler, it is possible to forget to open the manual switch 104, causing the escalator or moving walkway refueler to keep working. For this situation, the embodiments of the present disclosure design the status indicator 105. When the operator manually closes the manual switch 104, the status indicator 105 gives an indication, such as the indicator light lights up, and during the closing period of the manual switch 104, the indicator light remains on. Therefore, if the operator does not open the manual switch 104 after finishing the operation, they will see the indicator light on, thus realizing that the manual switch 104 has not been opened yet, that is, the status indicator 105 can remind the operator to restore the normal state of the power supply of the escalator or moving walkway refueler, that is, the state of refueling only when the escalator or moving walkway is running.

[0025] It can be seen that through the power switch device of the embodiments of the present disclosure, the escalator or moving walkway refueler can operate when the escalator or moving walkway stops running, thereby facilitating the operator to safely operate the refueler, and can also prompt the operator of the power supply state of the refueler to remind the operator to restore the normal state of the power supply of the escalator or moving walkway refueler.

[0026] Optionally, the power switch device may further include a circuit breaker, such as Figure 2 shown. Figure 2 FIG. shows a schematic circuit diagram of a power switch device 200 including a circuit breaker according to an embodiment of the present disclosure. Figure 2 in and Figure 1 Components with the same reference numerals apply to the description of Figure 1 . The power switch device 200 includes a circuit breaker 206. The circuit breaker 206 is connected between the first power input terminal Li and the first power output terminal Lo, and is connected in series with a parallel circuit of a first branch A and a second branch B. The circuit breaker 206 is configured to disconnect the power supply when an accident (such as electric leakage) occurs in the refueler to protect the refueler from damage or protect the safety of the operator.

[0027] In some embodiments, the manual switch may be a linked double-pole switch, where one pole switch is used to control the on / off of the second branch B, and the other pole switch is used to supply power to the status indicator. Figure 3 FIG. shows a schematic circuit diagram of a power switch device 300 according to an embodiment of the present disclosure. Figure 3 in and Figure 1 Components with the same reference numerals apply to the description of Figure 1 . The manual switch 304 of the power switch device 300 is a linked double-pole switch. The first pole switch 304a of the linked double-pole switch is connected in the second branch B to control the on / off of the second branch B. The second pole switch 304b of the linked double-pole switch is connected in series with the status indicator 305 (for example, an indicator light) between the first power input terminal Li and the second power input terminal Ni. The two switches of the linked double-pole switch are linked, that is, when the first pole switch is disconnected, the second pole switch is also disconnected; when the first pole switch is closed, the second pole switch is also closed. In Figure 3 example, when the operator closes the linked double-pole switch, the second branch B is connected and the indicator light is on; when the operator disconnects the linked double-pole switch, the second branch B is disconnected and the indicator light is off. Therefore, the indicator light can indicate the switch state of the manual switch 304, thereby being able to remind the operator to disconnect the manual switch 304 after completing the operation. This embodiment of the present disclosure can implement the indication of the manual switch state with a simple structure.

[0028] In some embodiments, the escalator or moving walkway operation signal may be a dry contact signal for the escalator or moving walkway operation. In this case, the electric control on-off device may be only two connection terminals. When the dry contact signal indicates connection, these two connection terminals are connected to make the first branch connected. When the dry contact signal indicates disconnection, these two connection terminals are not connected to make the first branch disconnected. Figure 4 FIG. 2 shows a schematic circuit diagram of a power switch device 400 according to an embodiment of the present disclosure. Figure 4 In Figure 1 the components with the same reference numerals are applicable to the description of Figure 1 . In Figure 4 the embodiment of, the escalator or moving walkway operation signal is a dry contact signal for the escalator or moving walkway operation. The escalator or moving walkway operation dry contact signal comes from the normally open contacts of the escalator or moving walkway operation contactor or relay. When the escalator or moving walkway is operating, the contactor or relay is closed and the dry contact signal is conducted. The electric control on-off device 403 includes a first signal input terminal 403a and a second signal input terminal 403b. The first signal input terminal 403a is connected to the first power input terminal Li, and the first signal input terminal 403b is connected to the first power output terminal Lo. The first signal input terminal 403a and the second signal input terminal 403b are used to receive the escalator or moving walkway operation dry contact signal. Specifically, the first signal input terminal 403a and the second signal input terminal 403b are used to respectively connect one of the two transmission lines for transmitting the escalator or moving walkway operation dry contact signal. The escalator or moving walkway operation dry contact signal is usually transmitted by connecting two transmission lines to the two normally open contacts of the escalator or moving walkway operation contactor or relay respectively. When the escalator or moving walkway operation contactor or relay is in the off state (when the escalator or moving walkway is stopped), the two transmission lines are disconnected, so the first signal input terminal 403a and the second signal input terminal 403b are also disconnected, and thus the first branch A is disconnected. When the escalator or moving walkway operation contactor or relay is closed (when the escalator or moving walkway is operating), the two transmission lines are connected, so the first signal input terminal 403a and the second signal input terminal 403b are also connected, and thus the first branch A is connected, and the escalator or moving walkway refueler can refuel normally. Thus, in Figure 4 the embodiment of, the electric control on-off device 403 can realize the on-off of the first branch A according to the escalator or moving walkway operation dry contact signal.

[0029] In some embodiments, the electric control on-off device may further include a relay. The switch side of the relay is connected in the first branch, and the switch side of the relay is controlled by the escalator or moving walkway operation signal for its on-off. In these embodiments, the escalator or moving walkway operation signal may also be a dry contact signal for the escalator or moving walkway operation. Figure 5A schematic circuit diagram of a power switch device 500 according to an embodiment of the present disclosure is shown. Figure 5 Among Figure 1 Components with the same reference numerals apply to the description for Figure 1 In addition Figure 4 The description of the normally open contact signal for the escalator or moving walk operation in Figure 5 also applies to Figure 5 . As Figure 5 shown, the electric control on-off device 503 includes a first signal input terminal 503a, a second signal input terminal 503b, and a relay 503c. The first signal input terminal 503a is connected to the first power input terminal Li, the second signal input terminal 503b is connected to one end of the control side of the relay 503c, and the other end of the control side of the relay 503c is connected to the second power input terminal Ni. The first signal input terminal 503a and the second signal input terminal 503b are used to respectively connect one of the two transmission lines for transmitting the normally open contact signal of the escalator or moving walk operation. The switch side of the relay 503c is connected in the first branch A. In this embodiment, when the normally open contact signal of the escalator or moving walk operation indicates disconnection, the connection between the first signal input terminal 503a and the second signal input terminal 503b is disconnected, so no current passes through the control side of the relay 503c, and thus its switch side remains disconnected; when the normally open contact signal of the escalator or moving walk operation indicates connection, the connection between the first signal input terminal 503a and the second signal input terminal 503b is connected, so current passes through the control side of the relay 503c, and thus its switch side is connected. Thus, in Figure 5 the embodiment of Figure 5 , the electric control on-off device 503 can realize the on-off of the first branch A according to the normally open contact signal of the escalator or moving walk operation. Optionally, Figure 5 The first signal input terminal 503a, the second signal input terminal 503b, and the control terminal of the relay 503c in Figure 5 can also be connected to other power supplies different from the power input terminals Li and Ni, so as to isolate the power supplies of the control side and the switch side of the relay 503c.

[0030] In some embodiments of the present disclosure, the escalator or moving walk operation signal may include an escalator or moving walk up operation signal and an escalator or moving walk down operation signal. As long as one of them indicates that the elevator is in operation, the first branch can be connected. The escalator up operation signal indicates the signal when the escalator is running upward, the escalator down operation signal indicates the signal when the escalator is running downward, and the moving walk up operation signal and the moving walk down operation signal can respectively indicate the signal when the moving walk is running in one direction. For example, the electric control on-off device may include two parallel on-off devices, which respectively receive the escalator or moving walk up operation signal and the escalator or moving walk down operation signal. Figure 6 A schematic circuit diagram of a power switch device 600 according to an embodiment of the present disclosure is shown.Figure 6 Among Figure 1 components with the same reference numerals apply to the description for Figure 1 . As Figure 6 shown, the electrically controlled on-off device 603 includes a first on-off device 603a and a second on-off device 603b connected in parallel. The first on-off device 603a is used to receive the running signal on the escalator or moving walkway, and the second on-off device 603b is used to receive the running signal under the escalator or moving walkway. In Figure 6 example, as long as any one of the running signal on the escalator or moving walkway and the running signal under the escalator or moving walkway indicates that the escalator or moving walkway is running, the first on-off device 603a or the second on-off device 603b will make the first branch A connected, so that the escalator or moving walkway refueler can refuel normally.

[0031] The above has illustrated the exemplary embodiments of the power switch device according to the present disclosure through examples. Through the power switch device of the embodiments of the present disclosure, the escalator or moving walkway refueler can work when the escalator or moving walkway stops running, which is convenient for the operator to operate the refueler safely, and can also prompt the operator of the power supply state of the refueler to remind the operator to restore the normal state of the power supply of the escalator or moving walkway refueler. Obviously, the components of the above embodiments of the drawings can be combined or used alternatively. For example, Figure 2 the circuit breaker 106 in can be applicable to Figures 3 to 6 in, Figure 3 the interlocking double-pole switch in and its connection mode with the status indicator 305 can be applicable to Figures 4 to 5 in, Figure 4 and Figure 5 the dry contact signals of the escalator or moving walkway running in can be applicable to Figure 6 the running signal on the escalator or moving walkway and / or the running signal under the escalator or moving walkway in.

[0032] The block diagrams of the circuits, devices, apparatuses, equipment, and systems involved in the present disclosure are only exemplary examples and do not intend to require or imply that they must be connected, arranged, and configured in the manner shown in the block diagrams. As those skilled in the art will recognize, these circuits, devices, apparatuses, equipment, and systems can be connected, arranged, and configured in any way as long as the desired purpose can be achieved.

[0033] Those skilled in the art should understand that the above specific embodiments are only examples and not limitations, and various modifications, combinations, partial combinations, and substitutions can be made to the embodiments of the present disclosure according to design requirements and other factors, as long as they are within the scope of the appended claims or their equivalents, that is, within the scope of the rights to be protected by the present disclosure.

Claims

1. A power switch device for an escalator or moving walkway fuel dispenser, characterized in that Comprising: A power input port, including a first power input terminal and a second power input terminal, for connecting to an input power supply; A power output port, including a first power output terminal and a second power output terminal, for connecting to an escalator or a moving walkway refueler, the second power input terminal is connected to the second power output terminal, and a first branch and a second branch connected in parallel are connected between the first power input terminal and the first power output terminal; An electric control on-off device, connected in the first branch, for controlling the on-off of the first branch according to an escalator or moving walkway operation signal; A manual switch, connected in the second branch, for controlling the on-off of the second branch; And A status indicator, for indicating the switch state of the manual switch.

2. The power switch device according to claim 1, wherein: The manual switch is a linkage double-pole switch, The first knife switch of the linkage double-pole switch is connected in the second branch for controlling the on-off of the second branch, and The second knife switch of the linkage double-pole switch is connected in series with the status indicator between the first power input terminal and the second power input terminal.

3. The power switch device according to claim 1, wherein: The electric control on-off device includes a first signal input terminal and a second signal input terminal, for receiving the escalator or moving walkway operation signal, the first signal input terminal is connected to the first power input terminal, the second signal input terminal is connected to the first power output terminal, and The escalator or moving walkway operation signal is an escalator or moving walkway operation dry contact signal, and the first signal input terminal and the second signal input terminal are used to respectively connect one of the two transmission lines for transmitting the escalator or moving walkway operation dry contact signal.

4. The power switch device according to claim 1, wherein: The electric control on-off device includes a relay, the switch side of the relay is connected in the first branch, and The switch side of the relay is controlled by the escalator or moving walkway operation signal for on-off.

5. The power switch device according to claim 4, wherein: The electric control on-off device includes a first signal input terminal and a second signal input terminal, for receiving the escalator or moving walkway operation signal, the first signal input terminal is connected to the first power input terminal, the second signal input terminal is connected to one end of the control side of the relay, the other end of the control side of the relay is connected to the second power input terminal, and The escalator or moving walkway operation signal is an escalator or moving walkway operation dry contact signal, and the first signal input terminal and the second signal input terminal are used to respectively connect one of the two transmission lines for transmitting the escalator or moving walkway operation dry contact signal.

6. The power switch device according to claim 1, wherein: The power switch device further includes a circuit breaker, and The circuit breaker is connected between the first power input terminal and the first power output terminal, and is connected in series with the parallel circuit of the first branch and the second branch.

7. The power switch device according to claim 1, wherein: The escalator or moving walkway operation signals include the operation signals on the escalator or moving walkway and the operation signals under the escalator or moving walkway, and The electric control on-off device includes a first on-off device and a second on-off device connected in parallel. The first on-off device is used to receive the operation signal on the escalator or moving walkway, and the second on-off device is used to receive the operation signal under the escalator or moving walkway.

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