CN218455773U - Elevator brake switch fault detection device - Google Patents
Elevator brake switch fault detection device Download PDFInfo
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- CN218455773U CN218455773U CN202222804797.3U CN202222804797U CN218455773U CN 218455773 U CN218455773 U CN 218455773U CN 202222804797 U CN202222804797 U CN 202222804797U CN 218455773 U CN218455773 U CN 218455773U
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Abstract
The utility model discloses an elevator brake switch fault detection device, include: first detection module, power module and detection control module, first detection module includes: the photoelectric coupling unit U1, the resistor R1 and the AND gate U3; photoelectric coupling unit U1 positive pole input is connected to power supply contactor KM2 and band-type brake switch SBK's contact in the elevator band-type brake circuit, photoelectric coupling unit U1 negative pole input is connected to the contact of band-type brake coil YB and band-type brake contactor KMB1 in the elevator band-type brake circuit, photoelectric coupling unit U1's collection electrode end is connected to power module's 5V output through resistance R1, photoelectric coupling unit U1's emitter extreme ground connection, photoelectric coupling unit U1's collection electrode end is connected to the first input of AND gate U3. This elevator band-type brake switch fault detection device solves and can not realize detecting the problem whether band-type brake switch damages among the prior art.
Description
Technical Field
The utility model relates to an elevator band-type brake fault detection field, concretely relates to elevator band-type brake switch fault detection device.
Background
The elevator band-type brake is an important use component in the elevator, when the elevator runs and breaks down, a band-type brake coil in the elevator band-type brake needs to be electrified, band-type brake braking is realized after the band-type brake coil is electrified, and the danger of elevator fault running is reduced. In order to control the operation of the band-type brake coil, an elevator band-type brake circuit is arranged.
As shown in fig. 1, in the prior art, an elevator brake circuit includes: power supply contactor KM1, power supply contactor KM2, band-type brake switch SBK, band-type brake contactor KMB1, spark elimination module and band-type brake contactor KMB2, elevator power module output 110V voltage, 110V voltage loops through power supply contactor KM1, power supply contactor KM2, band-type brake switch SBK is connected to the positive pole of band-type brake coil YB, band-type brake coil YB negative pole loops through band-type brake contactor KMB1 and band-type brake contactor KMB2 ground connection, band-type brake coil YB connects in parallel has the spark elimination module. The band-type brake switch SBK is a controllable switch. Although this elevator band-type brake circuit can realize controlling whether band-type brake coil circular telegram, this elevator band-type brake circuit still exists the shortcoming:
after the elevator car brake is used for a long time, the SBK of the band-type brake switch is easy to damage, so that the control of the electrification work of a band-type brake coil cannot be normally implemented, the band-type brake action cannot be realized, the guarantee is lost when the elevator runs out of order, and the safety of taking the elevator is reduced. How to detect the quality of the band-type brake switch is very important, but the prior art cannot realize the active detection of the quality of the band-type brake switch.
SUMMERY OF THE UTILITY MODEL
The utility model provides an elevator band-type brake switch fault detection device solves the problem that can not realize detecting the band-type brake switch and whether damage among the prior art.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model discloses an elevator brake switch fault detection device, include: first detection module, power module and detection control module, first detection module includes: the photoelectric coupling unit U1, the resistor R1 and the AND gate U3; the positive input end of a photoelectric coupling unit U1 is connected to a contact of a power supply contactor KM2 and a brake switch SBK in an elevator brake circuit, the negative input end of the photoelectric coupling unit U1 is connected to a contact of a brake coil YB and a brake contactor KMB1 in the elevator brake circuit, a collector end of the photoelectric coupling unit U1 is connected to a 5V output end of a power module through a resistor R1, an emitter end of the photoelectric coupling unit U1 is grounded, a collector end of the photoelectric coupling unit U1 is connected to a first input end of an AND gate U3, a second input end of the AND gate U3 is connected to a control end of the brake switch SBK in the elevator brake circuit, and an output end of the AND gate U3 is an output end of a first detection module; the output end of the first detection module is connected to the first input end of the detection control module, the second input end of the detection control module is connected to the second input end of the AND gate U3, and the power supply module provides 5V voltage for the detection control module.
Preferably, this elevator band-type brake switch fault detection device still includes: a second detection module, the second detection module comprising: optoelectronic coupling unit U2 and resistance R2, optoelectronic coupling unit U2's positive pole input is connected to the contact of band-type brake switch SBK and band-type brake coil YB, optoelectronic coupling unit U2's negative pole input ground connection, optoelectronic coupling unit U2's collection electrode end is connected to power module's 5V output through resistance R2, optoelectronic coupling unit U2's emitter extreme ground connection, optoelectronic coupling unit U2's collection electrode end is the output of second detection module, the output of second detection module is connected to the third input that detects control module.
Preferably, the second detection module further includes: a controllable single-pole double-throw switch SPDT; the positive pole input end of the photoelectric coupling unit U2 is connected to the fixed end of a controllable single-pole double-throw switch SPDT, the first movable end of the controllable single-pole double-throw switch SPDT is connected to 110V voltage connected with an elevator brake circuit, the second movable end of the controllable single-pole double-throw switch SPDT is connected to the connection point of a brake switch SBK and a brake coil YB, and the control end of the controllable single-pole double-throw switch SPDT is connected to the output end of the detection control module.
Preferably, the elevator brake switch fault detection device further comprises: a voltage division module; the voltage division module includes: the voltage-dividing resistor RYB1 and the voltage-dividing resistor RYB2 are connected in parallel, the voltage-dividing resistor RYB1 is connected in parallel with a band-type brake switch SBK in an elevator band-type brake circuit, and the voltage-dividing resistor RYB2 is connected in parallel with a band-type brake coil YB in the elevator band-type brake circuit.
Compared with the prior art, the utility model discloses following beneficial effect has:
because the band-type brake switch is controllable switch (for example, a contactor) among the elevator band-type brake switch circuit, consequently, through the control end that detects the band-type brake switch, it is also to detect whether the second input of control module detects the high level signal that drives the band-type brake switch closure, photoelectric coupling unit U1 of first detection module also is connected to the both ends of band-type brake switch and band-type brake coil simultaneously, and if and only when power supply contactor KM1, power supply contactor KM2, band-type brake switch SBK, band-type brake contactor KMB1 and band-type brake contactor KMB2 are all closed, first detection module just outputs the high level, photoelectric coupling unit U1 plays the effect of isolating the voltage that will be close to 110V with 5V voltage, avoid higher voltage to export the voltage that AND gate U3 can not adapt to, avoid burning out AND gate U3, AND gate U3 can only export the high level when band-type brake switch SBK receives the circuit switch-type brake switch that starts high level voltage and band-type brake switch SBK belongs to put through, thereby detect whether the high level switch can be the detection module for the operation smoothly for high level switch detection of detection module with the high level detection of the detection module for the high level detection of the detection module for the reliability of the band-type brake switch.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.
Drawings
Fig. 1 is a schematic diagram of an elevator brake switch circuit of an elevator brake switch detection object of an elevator brake switch fault detection device;
fig. 2 is a schematic diagram of the elevator brake switch fault detection device together with an elevator brake switch circuit.
Reference numerals: the device comprises a power supply contactor KM1, a power supply contactor KM2, a band-type brake switch SBK, a band-type brake contactor KMB1, a band-type brake contactor KMB2, a photoelectric coupling unit U1, a resistor R1, an AND gate U3, a photoelectric coupling unit U2, a resistor R2, a controllable single-pole double-throw switch SPDT, a divider resistor RYB1 and a divider resistor RYB2.
Detailed Description
In order to make the utility model realize that technical means, creation characteristics, achievement purpose and effect are clearer and easily understand, it is right to combine below the figure and the detailed implementation mode the utility model discloses do further explanation:
as shown in fig. 2, the utility model discloses an elevator brake switch fault detection device, include: first detection module, power module and detection control module, first detection module includes: the photoelectric coupling unit U1, the resistor R1 and the AND gate U3; the positive input end of a photoelectric coupling unit U1 is connected to a contact of a power supply contactor KM2 and a brake switch SBK in an elevator brake circuit, the negative input end of the photoelectric coupling unit U1 is connected to a contact of a brake coil YB and a brake contactor KMB1 in the elevator brake circuit, a collector end of the photoelectric coupling unit U1 is connected to a 5V output end of a power module through a resistor R1, an emitter end of the photoelectric coupling unit U1 is grounded, a collector end of the photoelectric coupling unit U1 is connected to a first input end of an AND gate U3, a second input end of the AND gate U3 is connected to a control end of the brake switch SBK in the elevator brake circuit, and an output end of the AND gate U3 is an output end of a first detection module; the output end OUT1 of the first detection module is connected to the first input end of the detection control module, the second input end of the detection control module is connected to the second input end of the AND gate U3, and the power supply module provides 5V voltage for the detection control module.
This elevator band-type brake switch fault detection device still includes: a second detection module, the second detection module comprising: optoelectronic coupling unit U2 and resistance R2, optoelectronic coupling unit U2's positive pole input is connected to the contact of band-type brake switch SBK and band-type brake coil YB, optoelectronic coupling unit U2's negative pole input ground connection, optoelectronic coupling unit U2's collection electrode end is connected to power module's 5V output through resistance R2, optoelectronic coupling unit U2's emitter end ground connection, optoelectronic coupling unit U2's collection electrode end is the output of second detection module, the output OUT2 of second detection module is connected to the third input that detects control module. Because when power supply contactor KM1, power supply contactor KM2 normally switches on, when band-type brake contactor KMB1 and band-type brake contactor KMB2 also normally switch on, and when band-type brake switch SBK damaged, 110V voltage can reach power supply contactor KM2 and band-type brake switch SBK's contact, ground connection also can reach band-type brake coil YB and band-type brake contactor KMB 1's contact, even if even band-type brake switch SBK damages and power supply contactor KM1, power supply contactor KM2, when band-type brake contactor KMB1 and band-type brake contactor KMB2 all normally switch on, also can not detect whether band-type brake switch SBK has damaged, consequently set up the second detection module, whether the contact of detection band-type brake switch SBK and band-type brake coil YB has great voltage. The first detection module and the second detection module are matched to realize the following functions, when the first detection module outputs a high level, the fact that the contracting brake switch SBK is commanded to be turned off is proved, and meanwhile, the fact that the power supply contactor KM1, the power supply contactor KM2, the contracting brake contactor KMB1 and the contracting brake contactor KMB2 can normally work is also proved; when the first detection module outputs a high level and the second detection module outputs the high level at the same time, the brake switch SBK is proved to work normally. If the first detection module outputs high level and the second detection module outputs low level at the same time, the brake switch SBK is proved to be damaged. Therefore, whether the normal working condition of the band-type brake switch SBK is detected or not is realized.
The second detection module further comprises: a controllable single-pole double-throw switch SPDT; the positive pole input end of the photoelectric coupling unit U2 is connected to the fixed end of a controllable single-pole double-throw switch SPDT, the first movable end of the controllable single-pole double-throw switch SPDT is connected to 110V voltage connected with an elevator brake circuit, the second movable end of the controllable single-pole double-throw switch SPDT is connected to the connection point of a brake switch SBK and a brake coil YB, and the control end of the controllable single-pole double-throw switch SPDT is connected to the output end of the detection control module. When the damage of the band-type brake switch SBK is detected, the control end of the band-type brake switch SBK is input with high level under the emergency condition, and therefore the controllable single-pole double-throw switch SPDT is arranged. When the second detection module executes detection work, the fixed end of the controllable single-pole double-throw switch SPDT is communicated with the second movable end, and the detection work of the second detection module can be realized at the moment. When the damage of the band-type brake switch SBK is detected, the detection control module controls the knife of the controllable single-pole double-throw switch SPDT to operate, the fixed end and the first movable end of the controllable single-pole double-throw switch SPDT are connected, the 110V voltage is directly loaded on the band-type brake coil under the emergency condition, the normal work of the band-type brake coil under the emergency condition is ensured, and the safety is improved.
This elevator band-type brake switch fault detection device still includes: a voltage division module; the voltage division module comprises: the voltage-dividing resistor RYB1 and the voltage-dividing resistor RYB2 are connected in parallel, the voltage-dividing resistor RYB1 is connected in parallel with a band-type brake switch SBK in an elevator band-type brake circuit, and the voltage-dividing resistor RYB2 is connected in parallel with a band-type brake coil YB in the elevator band-type brake circuit. The circuit where the band-type brake coil YB and the band-type brake switch SBK are located is protected, and the phenomenon of short circuit is avoided.
Finally, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the present invention can be modified or replaced by other means without departing from the spirit and scope of the present invention, which should be construed as limited only by the appended claims.
Claims (4)
1. Elevator brake switch fault detection device, its characterized in that includes: a first detection module, a power supply module and a detection control module,
the first detection module includes: the photoelectric coupling unit U1, the resistor R1 and the AND gate U3; the positive input end of a photoelectric coupling unit U1 is connected to a contact of a power supply contactor KM2 and a brake switch SBK in an elevator brake circuit, the negative input end of the photoelectric coupling unit U1 is connected to a contact of a brake coil YB and a brake contactor KMB1 in the elevator brake circuit, a collector end of the photoelectric coupling unit U1 is connected to a 5V output end of a power module through a resistor R1, an emitter end of the photoelectric coupling unit U1 is grounded, a collector end of the photoelectric coupling unit U1 is connected to a first input end of an AND gate U3, a second input end of the AND gate U3 is connected to a control end of the brake switch SBK in the elevator brake circuit, and an output end of the AND gate U3 is an output end of a first detection module;
the output end of the first detection module is connected to the first input end of the detection control module, the second input end of the detection control module is connected to the second input end of the AND gate U3, and the power supply module provides 5V voltage for the detection control module.
2. The device for detecting the fault of the elevator brake switch according to claim 1, further comprising: a second detection module, the second detection module comprising: optoelectronic coupling unit U2 and resistance R2, optoelectronic coupling unit U2's positive pole input is connected to the contact of band-type brake switch SBK and band-type brake coil YB, optoelectronic coupling unit U2's negative pole input ground connection, optoelectronic coupling unit U2's collection electrode end is connected to power module's 5V output through resistance R2, optoelectronic coupling unit U2's emitter extreme ground connection, optoelectronic coupling unit U2's collection electrode end is the output of second detection module, the output of second detection module is connected to the third input that detects control module.
3. The device for detecting the fault of the elevator brake switch according to claim 2, wherein the second detection module further comprises: a controllable single-pole double-throw switch SPDT;
the positive pole input end of the photoelectric coupling unit U2 is connected to the fixed end of a controllable single-pole double-throw switch SPDT, the first movable end of the controllable single-pole double-throw switch SPDT is connected to 110V voltage connected with an elevator brake circuit, the second movable end of the controllable single-pole double-throw switch SPDT is connected to the connection point of a brake switch SBK and a brake coil YB, and the control end of the controllable single-pole double-throw switch SPDT is connected to the output end of the detection control module.
4. The device for detecting the fault of the elevator brake switch according to claim 3, further comprising: a voltage division module;
the voltage division module includes: the voltage-dividing resistor RYB1 and the voltage-dividing resistor RYB2 are connected in parallel, the voltage-dividing resistor RYB1 is connected in parallel with a band-type brake switch SBK in an elevator band-type brake circuit, and the voltage-dividing resistor RYB2 is connected in parallel with a band-type brake coil YB in the elevator band-type brake circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222804797.3U CN218455773U (en) | 2022-10-24 | 2022-10-24 | Elevator brake switch fault detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222804797.3U CN218455773U (en) | 2022-10-24 | 2022-10-24 | Elevator brake switch fault detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218455773U true CN218455773U (en) | 2023-02-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222804797.3U Active CN218455773U (en) | 2022-10-24 | 2022-10-24 | Elevator brake switch fault detection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218455773U (en) |
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2022
- 2022-10-24 CN CN202222804797.3U patent/CN218455773U/en active Active
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