CN210223879U - Three-position switch and control device for opening in place of three-position switch - Google Patents
Three-position switch and control device for opening in place of three-position switch Download PDFInfo
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- CN210223879U CN210223879U CN201920986087.2U CN201920986087U CN210223879U CN 210223879 U CN210223879 U CN 210223879U CN 201920986087 U CN201920986087 U CN 201920986087U CN 210223879 U CN210223879 U CN 210223879U
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Abstract
The utility model relates to a controlling means and three station switches that three station switch separating brake put in place. The three-station switch comprises an isolating switch closing position, a grounding switch closing position, a separating position, a motor for driving the moving contact to move and a control device; the control device controls the motor and comprises a detection unit arranged at a brake separating position, a short-circuit switch arranged between an anode and a cathode of the motor and a controller, wherein the detection unit is used for sending a brake separating in-place signal when detecting that the moving contact is in a brake separating position; the input end of the controller is connected with the detection unit in a sampling mode, and the output end of the controller is connected with the short-circuit switch in a control mode and used for controlling the short-circuit switch to be closed after receiving the opening in-place signal. By controlling the closing of the short-circuit switch, the anode and the cathode of the motor are in short circuit, the motor can be rapidly braked, and the three-station switch is switched off and stops in place.
Description
Technical Field
The utility model relates to a controlling means and three station switches that three station switch separating brake put in place.
Background
The three-station operating mechanism is a mechanism for realizing the operation switching of three working positions of isolating switch closing, grounding switch closing and opening of the existing inflatable switch cabinet. The three-position switch realizes the electric switching-on and switching-off operation through the control of the motor, and the accurate switching-on can be realized during the electric switching-on because the three-position operating mechanism is limited by a switching-on in-place blocking structure or an anti-falling structure; however, when the electric brake is switched off, the electric brake-off operation of the three-station operating mechanism fails when the microswitch fails or fails, the motor cannot stop immediately when receiving a stop signal, and the motor continues to rotate for a certain angle under the inertia effect of the motor and drives the transmission and moving parts of the operating mechanism to move along with the motor, so that the motor exceeds the effective range of the travel switch, and the problem of the excessive position stop of the brake-off is caused.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a controlling means and three station switches that three station switch separating brake put in place to solve the problem that three station switch separating brake stopped the dislocation.
In order to achieve the above object, the utility model provides a three-station switch separating brake control device that targets in place, include
The detection unit is arranged at the brake separating position and used for sending a brake separating in-place signal when detecting that the moving contact is in place;
the short circuit switch is arranged between the positive electrode and the negative electrode of the motor;
the controller, the detection element is connected in the sampling of controller input, controller output end control connection short circuit switch for receive the separating brake signal that targets in place after control short circuit switch closure.
Has the advantages that: the short-circuit switch arranged between the positive pole and the negative pole of the motor is controlled to be closed, so that the positive pole and the negative pole of the motor are in short circuit, and the condition that the motor cannot be stopped in time when reaching a brake separating position under the action of uncontrolled inertia, exceeds a stroke range and causes over-position can be effectively avoided; the short circuit between the positive negative pole of motor makes stator winding form closed circuit, and the rotatory rotor of inertia produces induced-current in stator winding this moment, and induced-current produces a rotating magnetic field opposite with rotor inertia direction of rotation in the motor inside, makes the inside very big damping magnetic field that produces of motor, and the rotor brakes fast to reach the effect of the quick braking of motor, quick braking can effectual restriction inertia effect, make in the journey scope, satisfy the required precision, make the control that the separating brake stopped to target in place more reliable.
Further, the detection unit comprises at least one group of micro switches. When the detection unit is a microswitch, the detection can be realized through the self structural component of the three-position switch, and the detection unit is not required to be additionally arranged, so that the cost can be saved; and a plurality of groups of micro switches are arranged, so that when one group of micro switches is failed or fails, the opening in-place signal can be detected through other groups of micro switches, and the detection result is more reliable.
Furthermore, the control device also comprises a timer which is used for controlling the short-circuit switch to be closed when the opening operation is carried out and the set time is reached. The brake-off in place can be automatically and reliably realized when the detection unit is in fault or failure.
Furthermore, the control device also comprises a handle, and the handle is in driving connection with the moving contact. The manual operation control switching-off is more reliable.
Furthermore, the control device also comprises an alarm unit, and the alarm unit is used for reminding when the brake is not in place.
In order to achieve the above object, the utility model discloses still provide a three-station switch, include
An isolating switch closing position; a grounding switch closing position; a brake separating position;
the motor is used for driving the moving contact to move;
a control device that controls the motor;
the control device is the control device for the brake-separating in place of the three-position switch.
Has the advantages that: the short-circuit switch arranged between the positive pole and the negative pole of the motor is controlled to be closed, so that the positive pole and the negative pole of the motor are in short circuit, and the condition that the motor cannot be stopped in time when reaching a brake separating position under the action of uncontrolled inertia, exceeds a stroke range and causes over-position can be effectively avoided; the short circuit between the positive negative pole of motor makes stator winding form closed circuit, and the rotatory rotor of inertia produces induced-current in stator winding this moment, and induced-current produces a rotating magnetic field opposite with rotor inertia direction of rotation in the motor inside, makes the inside very big damping magnetic field that produces of motor, and the rotor brakes fast to reach the effect of the quick braking of motor, quick braking can effectual restriction inertia effect, makes in the journey scope, satisfies the precision requirement, thereby makes the reliable separating brake of three-station switch target in place.
Drawings
Fig. 1 is a control principle structure diagram of the present invention.
Detailed Description
Three-position switch example 1:
the three-station switch comprises an isolating switch closing position, a grounding switch closing position, a separating position and an operating mechanism, and the three working positions are distributed on the operating mechanism: the middle position is an opening position, and the two ends are respectively an isolating switch closing position and a grounding switch closing position.
The operating mechanism further comprises an isolating switch opening and closing button, a grounding switch opening and closing button and a motor, and is used for inputting corresponding opening and closing operating instructions to the control device, under the action of the control device, the motor rotates forwards and backwards to drive the transmission mechanism to move, under the driving of the transmission mechanism, the insulating screw drives the moving contact of the three-position switch to move towards the isolating switch closing position fixed contact, the disconnecting switch fixed contact and the grounding switch closing position fixed contact respectively, and closing, opening and grounding of the three-position switch are achieved.
The utility model has the main idea that the short-circuit switch arranged between the positive pole and the negative pole of the motor is controlled to be closed to short-circuit the positive pole and the negative pole of the motor, so that the problem of over-position caused by the fact that the motor cannot be stopped in time under the action of uncontrolled inertia can be effectively avoided; and short circuit motor positive negative pole can make the inside very big damping magnetic field that produces of motor, and the rotor brakes fast to reach the effect of motor quick braking, make three station switch can break the floodgate and target in place.
The control device comprises a detection unit, a short-circuit switch and a controller, wherein the detection unit is used for detecting the position state of a moving contact of the three-position switch, and specifically, a detected signal is whether the moving contact moves to a separating brake position or not; the short circuit switch is arranged between the positive end and the negative end of the motor, and is switched on in a closed mode under the control action of the controller, so that the positive electrode and the negative electrode of the motor are in short circuit; when the detection unit detects that the moving contact is in place during opening, an opening in-place signal is sent to the controller, the controller controls the short-circuit switch to be closed after receiving the opening in-place signal, and the control principle of the control device is shown in fig. 1.
The working principle that the three-position switch is switched off in place is as follows: after the controller receives an operating instruction of the opening, the controller controls a motor on the operating mechanism to rotate forwards or backwards, and a moving contact of the three-position switch driven by the motor runs towards the opening position; when the detection unit detects that the moving contact moves to the opening position, the opening in-place signal is sent to the controller, the controller controls the motor to stop after receiving the opening in-place signal, and outputs a command for controlling the short-circuit switch to be closed, and then the short-circuit switch is controlled to be closed, so that the positive electrode and the negative electrode of the motor are in short circuit; when the positive and negative electrodes of the motor are in short circuit, the motor can be quickly braked, and accurate brake opening is realized.
The detection unit comprises a microswitch which is arranged at a brake separating position, the microswitch can be set into one group or a plurality of groups, when any group of microswitch triggers the switch from normal open to normal closed, the moving contact moves to the brake separating position, and the motor is controlled to stop at the brake separating position immediately. When two groups are arranged, the micro switches of the two groups of brake separating positions can be arranged at the same position of the operating mechanism, and also can be arranged at different positions, and are particularly related to the auxiliary signal transmission and the micro switch position arrangement of the operating mechanism, and are installed and arranged by technicians in the field according to actual conditions. The micro switch is a part of the three-position switch body, and the moving contact is subjected to in-place opening detection through the structure of the micro switch, so that the cost can be saved, and the volume of the three-position switch can be effectively controlled.
When the detection unit is in fault or failure, the three-position switch can be controlled to be switched in place by reaching the set time during the switching-off operation. Under the rated operation voltage, when the three-station operating mechanism executes normal opening and closing operation, the inherent action operation time of the operating mechanism is fixed. The controller can set the operation time of the three-position operating mechanism from the switch-on position to the switch-off position of the disconnecting switch to be T1, and the operation time of the switch-on position to the switch-off position of the grounding switch to be T2.
When the controller receives a brake-off command from the brake-on position of the disconnecting switch, timing is started, whether a brake-off in-place signal sent by the detection unit is received or not, the motor can be directly and automatically controlled to stop running when the operation time T1 is reached, the controller controls the short-circuit switch to be switched on, the positive electrode and the negative electrode of the motor are in short circuit, the motor is rapidly braked, and the movable contact can accurately stop at the brake-off position. Similarly, when the controller receives a brake opening command from the brake closing position of the grounding switch, timing is started, whether a brake opening in-place signal sent by the detection unit is received or not, the motor can be directly and automatically controlled to stop running when the operation time T2 is reached, the controller controls the short-circuit switch to be switched on, the positive electrode and the negative electrode of the motor are in short circuit, the motor is rapidly braked, and the moving contact can be accurately stopped at the brake opening position.
The control device further comprises a handle and an alarm unit, the handle is connected with the operating mechanism and drives the moving contact to move, the specific connection relationship is the prior art, detailed description is omitted, the alarm unit is connected with the controller, and when the controller controls the operating mechanism to drive the moving contact to move to a brake separating position or a brake passing position, the controller can give an alarm to lock the control motor and simultaneously output a locking signal to a circuit closing loop of the circuit breaker.
The alarm unit in this embodiment alarms and reminds that it is emitting diode, sees emitting diode twinkling of an eye, and operating personnel drives the moving contact through rocking the handle and moves to the separating brake position, and alarm unit resets, removes the shutting, can carry out subsequent divide-shut brake operation order.
Three-position switch example 2:
the difference between this embodiment and the three-position switch embodiment 1 is that the detection unit for detecting that the moving contact is in the open position includes a photoelectric position sensor, and when the moving contact is close to the open position by the photoelectric position sensor, the photoelectric device outputs an open position signal after receiving reflected light. Of course, the photoelectric position sensor may be provided in plurality, and the detection result may be provided in redundancy to improve reliability.
The alarm unit can also be used for voice reminding or sounding a warning sound, and the problems of excessive position and insufficient position can be quickly found out through voice reminding so as to solve the problems.
Three-position switch example 3:
the present embodiment is different from the three-position switch embodiment in that: the detection unit for detecting the in-place opening of the moving contact comprises a capacitive proximity switch, the in-place opening of the moving contact is detected through the capacitive proximity switch, and when the in-place opening of the moving contact is detected, an in-place opening signal is sent to the controller to complete the in-place control of the opening. Of course, a plurality of the detection units may be provided, and the reliability of the detection result may be improved by the redundancy.
In other embodiments, the detection unit may also include at least two of a micro switch, a photoelectric position sensor and a capacitive proximity switch, or may be another switch or sensor capable of detecting that the movable contact is in the open position.
As other embodiments, the alarm unit can also simultaneously have a light emitting diode and a sound reminding.
Control device embodiment:
the control device of the utility model comprises
The detection unit is arranged at the brake separating position and used for sending a brake separating in-place signal when detecting that the moving contact is in place;
the short circuit switch is arranged between the positive electrode and the negative electrode of the motor;
the controller, the detection element is connected in the sampling of controller input, controller output end control connection short circuit switch for receive the separating brake signal that targets in place after control short circuit switch closure.
The details of the control device have been described in the above three-position switch embodiments, and are not described herein again.
Claims (6)
1. A control device for opening and closing in place of a three-position switch is characterized by comprising
The detection unit is arranged at the brake separating position and used for sending a brake separating in-place signal when detecting that the moving contact is in place;
the short circuit switch is arranged between the positive electrode and the negative electrode of the motor;
the controller, the detection element is connected in the sampling of controller input, controller output end control connection short circuit switch for receive the separating brake signal that targets in place after control short circuit switch closure.
2. The device for controlling the opening and closing of the three-position switch to the right position according to claim 1, wherein the detection unit comprises at least one group of micro switches.
3. The device for controlling the in-place opening of the three-position switch according to claim 1, wherein the device further comprises a timer for controlling the short-circuit switch to be closed when the opening operation is performed for a set time.
4. The device for controlling the in-place opening of the three-position switch according to claim 1, further comprising a handle, wherein the handle is in driving connection with the movable contact.
5. The device for controlling the in-place opening of the three-position switch according to any one of claims 1 to 4, further comprising an alarm unit, wherein the alarm unit is used for reminding when the opening is not in place.
6. A three-position switch comprises
An isolating switch closing position; a grounding switch closing position; a brake separating position;
the motor is used for driving the moving contact to move;
a control device that controls the motor;
the control device is characterized in that the control device is the control device for the brake-separating in place of the three-position switch according to any one of claims 1 to 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920986087.2U CN210223879U (en) | 2019-06-26 | 2019-06-26 | Three-position switch and control device for opening in place of three-position switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920986087.2U CN210223879U (en) | 2019-06-26 | 2019-06-26 | Three-position switch and control device for opening in place of three-position switch |
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| Publication Number | Publication Date |
|---|---|
| CN210223879U true CN210223879U (en) | 2020-03-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920986087.2U Active CN210223879U (en) | 2019-06-26 | 2019-06-26 | Three-position switch and control device for opening in place of three-position switch |
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| CN (1) | CN210223879U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114242472A (en) * | 2021-11-05 | 2022-03-25 | 河南平高电气股份有限公司 | Switching-on and switching-off stroke adjusting device, switch operating mechanism and switch |
-
2019
- 2019-06-26 CN CN201920986087.2U patent/CN210223879U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114242472A (en) * | 2021-11-05 | 2022-03-25 | 河南平高电气股份有限公司 | Switching-on and switching-off stroke adjusting device, switch operating mechanism and switch |
| CN114242472B (en) * | 2021-11-05 | 2024-04-16 | 河南平高电气股份有限公司 | Switching-on and switching-off stroke adjusting device, switch operating mechanism and switch |
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