CN217683477U - Electric control device of electric control stop valve with state indication and automatic power-off functions - Google Patents
Electric control device of electric control stop valve with state indication and automatic power-off functions Download PDFInfo
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- CN217683477U CN217683477U CN202220737536.1U CN202220737536U CN217683477U CN 217683477 U CN217683477 U CN 217683477U CN 202220737536 U CN202220737536 U CN 202220737536U CN 217683477 U CN217683477 U CN 217683477U
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Abstract
The application provides an automatically controlled shutdown valve electrical control device who possesses state indication and auto-power-off function, including first micro-gap switch 1, second micro-gap switch 2, third micro-gap switch 3, motor, transmission lead screw, gear, wherein: the upper end of the transmission screw rod is of a threaded structure, the lower end of the transmission screw rod is sequentially provided with a first boss structure and a second boss structure, the first boss structure is provided with a second microswitch 2 and a third microswitch 3, the second boss structure is provided with a first microswitch 1, and the upper end of the transmission screw rod is in threaded connection with the gear; the first microswitch 1 of the wiring terminal c is connected with the motor in series and then connected with the second microswitch 2 in series; the C port of the first microswitch 1 is connected with the negative pole of the motor, the C port of the second microswitch 2 is connected with the positive pole of the motor, the NC port of the first microswitch 1 is connected with the NC port of the second microswitch 2 and led out of the grounding terminal b, and the NO port of the first microswitch 1 is led out of the wiring terminal C.
Description
Technical Field
The invention relates to the technical field of electrical control, in particular to an electrical control device of an electric control stop valve with state indication and automatic power-off functions.
Background
The electric control stop valve is arranged on the airplane and used for ground stop of the airplane brake control system. After the electric control stop valve is electrified, the electric control stop valve is in an opening state, the oil inlet is communicated with the brake port, and the airplane is stopped and braked under the action of hydraulic pressure.
However, the electrically controlled stop valve has the following disadvantages in use: when a pilot powers on the electric control stop valve in the cockpit, the pilot cannot know whether the electric control stop valve is normally opened. In addition, in order to keep the brake state, the electric control stop valve must be electrified all the time, so that the power consumption is high, and the maintenance cost of the product is increased.
At present, no design and application precedent of an electric control stop valve with the functions of state indication and automatic power off exists in China.
Disclosure of Invention
The invention aims to make up the defects in the background technology and provides an electric control device of an electric control stop valve with the functions of state indication and automatic power off.
The technical scheme adopted for realizing the purpose of the invention is as follows: the utility model provides an automatically controlled shutdown valve electrical control device that possesses state instruction and auto-power-off function, the device includes first micro-gap switch 1, second micro-gap switch 2, third micro-gap switch 3, motor, drive screw, gear, wherein:
the upper end of the transmission screw rod is of a threaded structure, the lower end of the transmission screw rod is sequentially provided with a first boss structure and a second boss structure, the first boss structure is provided with a second microswitch 2 and a third microswitch 3, the second boss structure is provided with a first microswitch 1, and the upper end of the transmission screw rod is in threaded connection with the gear;
the first microswitch 1 is connected with the motor in series and then connected with the second microswitch 2 in series to form a loop. The C port of the first microswitch 1 is connected with the negative pole of the motor, the C port of the second microswitch 2 is connected with the positive pole of the motor, the NC port of the first microswitch 1 is connected with the NC port of the second microswitch 2 and led out of a grounding terminal b, the NO port of the first microswitch 1 is led out of a wiring terminal C, and the NO port of the second microswitch 2 is led out of a wiring terminal a. The C port of the third microswitch 3 is connected with the input end of the power supply, and the NO port is connected with the signal leading-out end.
Preferably, when the electric control device of the electric control stop valve is in an initial state, the transmission screw rod is positioned at one side of the first microswitch 1 and presses a reed of the first microswitch 1 to connect a circuit; after the circuit supplies power, the motor rotates to drive the gear to rotate, and the gear drives the transmission screw rod to extend upwards so that the transmission screw rod moves to an extended state.
Preferably, when the electric control device of the electric control stop valve reaches an extending state, the contact at the lower end of the transmission screw rod is separated from the reed of the first microswitch 1, and meanwhile, the contact at the upper end of the transmission screw rod pushes the reeds of the second microswitch 2 and the third microswitch 3 and tightly presses the reeds, at the moment, a loop of the first microswitch 1, the motor and the second microswitch 2 is switched, which is equivalent to the disconnection of an original circuit, the motor does not work any more, and meanwhile, due to the characteristic of trapezoidal screw rod transmission, the transmission screw rod finally stops at the current position.
Preferably, when the electric control device of the electric control stop valve reaches the extending state, the transmission screw rod is positioned at the side of the second microswitch 2, the reed of the second microswitch 2 is pressed by the transmission screw rod, the C port inside the second microswitch 2 is communicated with the NO port, and the reed of the first microswitch 1 is in a free state, so that the C port inside the first microswitch 1 is communicated with the NC port. When voltage is supplied to the terminal a, the motor receives reverse voltage, so that the motor starts to rotate reversely to drive the gear to rotate, and the gear drives the transmission screw to retract downwards.
Preferably, when the transmission screw rod reaches the extending state, the contact above the transmission screw rod can press the reed of the third microswitch 3, the third microswitch 3 is closed, the port C is communicated with the port NO, and the electric signal is successfully transmitted to the cockpit and informs the pilot that the electric control stop valve is normally opened.
Preferably, when the transmission screw rod moves to the retraction state, the contact above the transmission screw rod is separated from the reed of the third microswitch 3, the third microswitch 3 is switched off, the port C is not communicated with the port NO, the electric signal is switched off, and the pilot knows that the electric control stop valve is normally closed.
Preferably, the transmission screw is a trapezoidal screw, is engaged with the gear, and is driven to move by the rotation of the gear in the transmission process.
Preferably, the second microswitch 2 and the third microswitch 3 are symmetrically arranged on the first boss structure.
Compared with the prior art, the invention has the beneficial effects that:
the invention utilizes two microswitches to be connected with the motor in series, and then the motor indirectly drives the transmission lead screw to push the reed of the microswitches, thereby realizing the control of the automatic disconnection of the circuit, meanwhile, one microswitches is used for transmitting the position signals of the transmission lead screw, and in addition, the transmission lead screw can still be self-locked at the current position after the power failure, thereby greatly reducing the power consumption of the product and saving the maintenance cost.
Drawings
FIG. 1 is a schematic structural diagram of an electrical control device of an electrically controlled shutdown valve of the present invention;
FIG. 2 is a first schematic diagram of the wiring of the automatic power-off function of the electrically controlled shutdown valve of the present invention;
FIG. 3 is a second schematic diagram of the wiring of the automatic power-off function of the electrically controlled stop valve according to the present invention;
FIG. 4 is a first schematic wiring diagram illustrating the status indication function of the electrically controlled shutdown valve of the present invention;
FIG. 5 is a second schematic diagram of the wiring of the status indication function of the electrically controlled shutdown valve of the present invention;
wherein: 1-a first microswitch, 2-a second microswitch and 3-a third microswitch.
Detailed Description
The invention is described in further detail below with reference to the figures and specific examples.
As shown in fig. 1, the present invention provides an electrical control device of an electrically controlled shutdown valve with status indication and automatic power off functions, comprising a first microswitch 1, a second microswitch 2, a third microswitch 3, a motor, a transmission screw and a gear, wherein:
the upper end of the transmission screw rod is of a threaded structure, the lower end of the transmission screw rod is sequentially provided with a first boss structure and a second boss structure, the first boss structure is provided with a second microswitch 2 and a third microswitch 3, the second boss structure is provided with a first microswitch 1, and the upper end of the transmission screw rod is in threaded connection with the gear;
the first microswitch 1 is connected with the motor in series and then connected with the second microswitch 2 in series to form a loop. The C port of the first microswitch 1 is connected with the negative pole of the motor, the C port of the second microswitch 2 is connected with the positive pole of the motor, the NC port of the first microswitch 1 is connected with the NC port of the second microswitch 2 and leads out a grounding terminal b, the NO port of the first microswitch 1 leads out a wiring terminal C, and the NO port of the second microswitch 2 leads out a wiring terminal a. The C port of the third microswitch 3 is connected with the input end of the power supply, and the NO port is connected with the signal leading-out end.
It should be noted that the signal leading-out terminal is a main body which needs to identify whether the electric control stop valve is opened or not. For example, the signal outlet is a cockpit.
Preferably, the second microswitch 2 and the third microswitch 3 are symmetrically arranged on the first boss structure.
In the initial state, the transmission screw rod is positioned at the side of the first microswitch 1 and presses the reed of the first microswitch 1 to connect the circuit. After the circuit supplies power, the motor rotates to drive the gear to rotate, the gear drives the transmission lead screw to extend upwards, and at the moment, the transmission lead screw is in an extending state; the contact at the lower end of the transmission screw rod is separated from the reed of the first microswitch 1, meanwhile, the contact at the upper end of the transmission screw rod pushes the reeds of the second microswitch 2 and the third microswitch 3 and compresses the reeds, at the moment, a loop of the first microswitch 1, the motor and the second microswitch 2 is switched, namely, the original circuit is disconnected, the motor does not work any more, the transmission screw rod stops at the current position, and the circuit of the third microswitch 3 is switched on, so that an electric signal is transmitted to the cockpit, and a pilot is informed that the electric control stop valve is normally opened.
The transmission lead screw is a trapezoidal lead screw and is meshed with the gear, the transmission lead screw is driven to move by the rotation of the gear in the transmission process, and the transmission mode has the characteristic of position self-locking, namely, the transmission lead screw cannot move when the gear does not rotate, so that the control device can still self-lock at the current position after power failure, long-time power on is not needed, and the power consumption of a product is greatly reduced.
As shown in fig. 2, in a loop of the first microswitch 1, i.e. the motor and the second microswitch 2, the C port of the first microswitch 1 is connected with the negative pole of the motor, the C port of the second microswitch 2 is connected with the positive pole of the motor, the NC port of the first microswitch 1 is connected with the NC port of the second microswitch 2 and led out of the grounding terminal b, the NO port of the first microswitch 1 is led out of the terminal C, and the NO port of the second microswitch 2 is led out of the terminal a.
When the transmission screw is in a retraction state (the circuit is shown in fig. 2), namely, the transmission screw is positioned on the side of the first microswitch 1, the reed of the first microswitch 1 is pressed by the transmission screw, the C port inside the first microswitch 1 is conducted with the NO port, and the reed of the second microswitch 2 is in a free state, so that the C port inside the second microswitch 2 is conducted with the NC port, voltage is provided for the terminal C, the motor starts to rotate to drive the gear to rotate, and the gear drives the transmission screw to extend upwards. When the transmission screw moves to a contact below and is separated from a reed of the first microswitch 1, an internal circuit of the first microswitch 1 is switched, a C port is disconnected with an NO port, the circuit is not conducted, the motor stops rotating, the transmission screw is self-locked at the current position, the transmission screw is in an extending state (the circuit is shown in figure 3) at the moment and is located on one side of the second microswitch 2, the reed of the second microswitch 2 is pressed by the transmission screw, the C port inside the second microswitch 2 is conducted with the NO port, and the reed of the first microswitch 1 is in a free state, so that the C port inside the first microswitch 1 is conducted with an NC port, voltage is provided for a wiring terminal a, the motor is equivalent to receiving reverse voltage at the moment, the motor starts to reversely rotate, the gear is driven to rotate, and the gear drives the transmission screw to retract downwards.
As shown in fig. 4, the third microswitch 3 has its C port connected to the power input and NO port connected to the signal outlet.
When the transmission screw rod moves to an extending state, a contact above the transmission screw rod can press a reed of the third microswitch 3, the third microswitch 3 is closed, the port C is communicated with the port NO, and an electric signal is successfully transmitted to the cockpit and informs a pilot that the electric control stop valve is normally opened.
When the transmission screw rod moves to the retraction state, the contact above the transmission screw rod is separated from the reed of the third microswitch 3, the third microswitch 3 is disconnected, the port C is not communicated with the port NO, as shown in fig. 5, the electric signal is cut off at the moment, and the pilot knows that the electric control stop valve is normally closed.
In conclusion, the present application provides an electrical control device of an electrically controlled shutdown valve with status indication and automatic power off functions, which comprises a first microswitch 1, a second microswitch 2, a third microswitch 3, a motor, a transmission screw and a gear. The first microswitch 1 is connected with the motor in series and then connected with the second microswitch 2 in series to form a loop, the motor drives the gear to rotate when being electrified and rotates, the gear drives the transmission lead screw to move, and the transmission lead screw can push the reed on the microswitch to realize on-off control of the circuit when moving, so that the automatic power-off and state indication functions are realized.
Claims (8)
1. Automatically controlled shut down valve electrical control device that possesses state indication and auto-power-off function, its characterized in that, the device includes first micro-gap switch (1), second micro-gap switch (2), third micro-gap switch (3), motor, drive screw, gear, wherein:
the upper end of the transmission screw rod is of a threaded structure, the lower end of the transmission screw rod is sequentially provided with a first boss structure and a second boss structure, the first boss structure is provided with a second microswitch (2) and a third microswitch (3), the second boss structure is provided with a first microswitch (1), and the upper end of the transmission screw rod is in threaded connection with the gear;
the circuit is characterized in that the first microswitch (1) is connected with a motor in series and then connected with the second microswitch (2) in series to form a loop, a C port of the first microswitch (1) is connected with the negative electrode of the motor, a C port of the second microswitch (2) is connected with the positive electrode of the motor, an NC port of the first microswitch (1) is connected with an NC port of the second microswitch (2) and leads out a grounding terminal b, an NO port of the first microswitch (1) leads out a wiring terminal C, an NO port of the second microswitch (2) leads out a wiring terminal a, a C port of the third microswitch (3) is connected with a power supply input end, and an NO port is connected with a signal leading-out end.
2. The device according to claim 1, characterized in that when the electric control device of the electric control shutdown valve is in an initial state, the transmission lead screw is positioned at the side of the first microswitch (1) and presses a reed of the first microswitch (1) to connect the circuit; after the circuit supplies power, the motor rotates to drive the gear to rotate, and the gear drives the transmission screw rod to extend upwards so that the transmission screw rod moves to an extended state.
3. The device according to claim 1, characterized in that when the electric control device of the electric control shutdown valve reaches the extended state, the contact at the lower end of the transmission screw rod is separated from the reed of the first microswitch (1), and simultaneously the contact at the upper end of the transmission screw rod pushes the reeds of the second microswitch (2) and the third microswitch (3) and tightly presses the reeds, at the moment, a loop of the first microswitch (1), the motor and the second microswitch (2) is switched, the original circuit is disconnected, the motor does not work any more, and the transmission screw rod finally stops at the current position.
4. The device according to claim 1, characterized in that when the electric control device of the electric control stop valve reaches the extending state, the transmission lead screw is positioned at the side of the second microswitch (2), the reed of the second microswitch (2) is pressed by the transmission lead screw, the C port inside the second microswitch (2) is communicated with the NO port, and the reed of the first microswitch (1) is in the free state, so the C port inside the first microswitch (1) is communicated with the NC port; when voltage is supplied to the wiring terminal a, the motor starts to rotate reversely to drive the gear to rotate, and the gear drives the transmission screw to retract downwards.
5. The device according to claim 1, characterized in that when the drive screw reaches the extended state, the contact above the drive screw presses the reed of the third microswitch (3), the third microswitch (3) is closed, the port C is communicated with the port NO, the electric signal is successfully transmitted to the cockpit and informs the pilot that the electrically controlled shutdown valve is normally opened.
6. The device according to claim 1, characterized in that when the drive screw moves to the retracted state, the contact above the drive screw is disengaged from the reed of the third microswitch (3), the third microswitch (3) is off, the C port is not in conduction with the NO port, and the electrical signal is cut off.
7. The device of claim 1, wherein the drive screw is a trapezoidal screw engaged with the gear, and the gear rotates to drive the drive screw to move during the driving process.
8. A device according to claim 1, characterized in that the second microswitch (2) and the third microswitch (3) are arranged symmetrically on the first boss structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220737536.1U CN217683477U (en) | 2022-03-31 | 2022-03-31 | Electric control device of electric control stop valve with state indication and automatic power-off functions |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220737536.1U CN217683477U (en) | 2022-03-31 | 2022-03-31 | Electric control device of electric control stop valve with state indication and automatic power-off functions |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217683477U true CN217683477U (en) | 2022-10-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220737536.1U Active CN217683477U (en) | 2022-03-31 | 2022-03-31 | Electric control device of electric control stop valve with state indication and automatic power-off functions |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217683477U (en) |
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- 2022-03-31 CN CN202220737536.1U patent/CN217683477U/en active Active
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