CN208127866U - Main hoist protects circuit - Google Patents
Main hoist protects circuit Download PDFInfo
- Publication number
- CN208127866U CN208127866U CN201820717403.1U CN201820717403U CN208127866U CN 208127866 U CN208127866 U CN 208127866U CN 201820717403 U CN201820717403 U CN 201820717403U CN 208127866 U CN208127866 U CN 208127866U
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- uplink
- downlink
- circuit
- comparator
- input terminal
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Abstract
The utility model relates to a kind of main hoists to protect circuit.To fill up prior art blank; this main hoist protection circuit includes uplink and downlink switch, the logical delay timer of main electromotor main power supply line, main hoist emergency stop circuit, current transformer, DC800 DC converter, uplink and downlink memory module, uplink and downlink comparator, uplink and downlink AND gate circuit, uplink and downlink, an OR circuit and a delay parameter input mechanism, is respectively formed uplink protection branch and downlink protection branch.After the remaining input terminal of uplink and downlink comparator is in parallel, it is connected commonly through DC800 DC converter with the signal output end of current transformer, current transformer covers on the main electromotor main power supply line, the remaining input terminal of uplink AND gate circuit is connected with upstream switch, and the remaining input terminal of downlink AND gate circuit is connected with downing switch.It is the utility model design science, reliable for operation, it is widely used in various mine hoists.
Description
Technical field
The utility model relates to a kind of main hoists to protect circuit.
Background technique
During main shaft hooist, because of the combined causes such as equipment and environmental factor, it sometimes appear that automatic unloading setting
It is not unloaded not go out in time, in turn results in " heavy-load lowering " caused " twice loading " accident.Excess weight promotion will cause very tight
The large-scale Electromechanical Accidents such as pulleying, abseiling of weight, cause destructive destruction to main lifting equipment and shaft equipment.
Utility model content
The technical problems to be solved in the utility model is how to overcome the drawbacks described above of the prior art, provides a kind of main shaft and mentions
The machine of liter protects circuit.
In order to solve the above technical problems, this main hoist protection circuit includes upstream switch, downing switch, main electromotor
Main power supply line and main hoist emergency stop circuit, it is characterised in that：Its further include current transformer, DC800 DC converter,
Uplink memory module, downlink memory module, uplink comparator, downlink comparator, uplink AND gate circuit, downlink AND gate circuit, on
The logical delay timer of row, downlink lead to delay timer, an OR circuit and a delay parameter input mechanism.
The logical delay timer of the uplink comparator, downlink comparator, uplink AND gate circuit, downlink AND gate circuit, uplink,
Downlink lead to delay timer and OR circuit respectively not She You an output end and two input terminals, the OR circuit pass through it
Output end is connected with main hoist emergency stop circuit.
The uplink memory module, uplink comparator, uplink AND gate circuit, uplink lead to delay timer and pass through input respectively
After end, output end are sequentially connected, it is connected jointly with an input terminal of the OR circuit, forms uplink and protect branch；
The downlink memory module, downlink comparator, downlink AND gate circuit, downlink lead to delay timer and pass through input respectively
After end, output end are sequentially connected, it is connected jointly with another input terminal of the OR circuit, forms downlink and protect branch.
After the remaining input terminal of uplink comparator and downlink comparator is in parallel, commonly through DC800 DC converter and electricity
The signal output end of current transformer is connected, and current transformer covers on the main electromotor main power supply line, uplink AND gate circuit
Remaining input terminal be connected with upstream switch, the remaining input terminal of downlink AND gate circuit is connected with downing switch.
After uplink leads to the remaining input terminal parallel connection of delay timer and the logical delay timer of downlink, join jointly with the delay
Number input mechanism is connected.
It is designed in this way, when current value reaches the comparator on-condition of setting (such as：It is respectively set as uplink comparator
Be -150A for 150A and downlink comparator), then with uplink and downlink instruction respectively by uplink AND gate circuit, downlink AND gate circuit into
Row judgement.
When uplink, if the current value that current transformer senses is less than -150A, it is judged as that another hoisting container does not unload
Sky, uplink AND gate circuit connect, and by uplink lead to delay timer delay predetermined time (such as 10 seconds) after, pass through described or door
Circuit triggers main hoist emergency stop circuit.
When same downlink, if the current value that current transformer senses is greater than 150A, it is judged as that the hoisting container does not have
Unstow, downlink AND gate circuit is connected, and after leading to delay timer delay predetermined time (such as 10 seconds) by downlink, by described or
Gate circuit triggers main hoist emergency stop circuit.It is designed in this way, convenient for protection main hoist, effectively prevent the failures such as overload.
The utility model main hoist protects circuit to have design science, and advantage reliable for operation is widely used in each
Kind mine hoist.
Detailed description of the invention
The utility model main hoist protection circuit is described further with reference to the accompanying drawing：
Fig. 1 is the structural schematic diagram of this main hoist protection circuit.
In figure：1 it is upstream switch, 2 be downing switch, 3 be main electromotor main power supply line, 4 is main hoist emergency stop
Circuit, 5 be current transformer, 6 be DC800 DC converter, 7 be uplink memory module, 8 be downlink memory module, 9 be uplink
Comparator, 10 be downlink comparator, 11 be uplink AND gate circuit, 12 be downlink AND gate circuit, 13 be uplink lead to delay timer,
14 be downlink lead to delay timer, 15 be OR circuit, 16 be delay parameter input mechanism.
Specific embodiment
Embodiment one：As shown in Figure 1, this main hoist protection circuit include upstream switch 1, downing switch 2, master mention
Rise owner's power supply source line 3 and main hoist emergency stop circuit 4, it is characterised in that：It further includes current transformer 5, DC800 direct current
Converter 6, uplink memory module 7, downlink memory module 8, uplink comparator 9, downlink comparator 10, uplink AND gate circuit 11,
Downlink AND gate circuit 12, uplink lead to delay timer 13, downlink leads to 14, OR circuits 15 of delay timer and a delay
Parameter input mechanism 16.The delay parameter input mechanism 16 can be touch screen or rotary switch or numeric keypad etc..
The logical delay of the uplink comparator 9, downlink comparator 10, uplink AND gate circuit 11, downlink AND gate circuit 12, uplink
Timer 13, downlink lead to delay timer 14 and OR circuit 15 is respectively equipped with an output end and two input terminals, described
OR circuit 15 is connected by its output end with main hoist emergency stop circuit 4,
The 7 uplink comparator 9 of uplink memory module, uplink AND gate circuit 11, uplink are led to delay timer 13 and are led to respectively
It crosses respective input, after output end is sequentially connected, is connected jointly with an input terminal of the OR circuit 15, form uplink and protect
Protect branch；
The downlink memory module 8, downlink comparator 10, downlink AND gate circuit 12, downlink lead to the difference of delay timer 14
After being sequentially connected by respective input, output end, it is connected jointly with another input terminal of the OR circuit 15, under formation
Row protection branch.
After the remaining input terminal of uplink comparator 9 and downlink comparator 10 is in parallel, commonly through DC800 DC converter 6
Be connected with the signal output end of current transformer 5,5 sets of current transformer on the main electromotor main power supply line 3, uplink with
The remaining input terminal of gate circuit 11 is connected with upstream switch 1, remaining input terminal and 2 phase of downing switch of downlink AND gate circuit 12
Even.
After uplink leads to the remaining input terminal parallel connection of delay timer 13 and the logical delay timer 14 of downlink, prolong jointly with described
When parameter input mechanism 16 be connected.
Claims (1)
1. a kind of main hoist protects circuit, including upstream switch, downing switch, main electromotor main power supply line and main shaft to mention
Rise machine emergency stop circuit, it is characterised in that：It further includes current transformer, DC800 DC converter, uplink memory module, downlink
Memory module, uplink comparator, downlink comparator, uplink AND gate circuit, downlink AND gate circuit, uplink lead to delay timer, under
The logical delay timer of row, an OR circuit and a delay parameter input mechanism,
The uplink comparator, downlink comparator, uplink AND gate circuit, downlink AND gate circuit, uplink lead to delay timer, downlink
Logical delay timer and OR circuit are not equipped with an output end and two input terminals respectively, and the OR circuit passes through its output
End is connected with main hoist emergency stop circuit,
The uplink memory module, uplink comparator, uplink AND gate circuit, uplink lead to delay timer pass through respectively input terminal,
After output end is sequentially connected, it is connected jointly with an input terminal of the OR circuit, forms uplink and protect branch；
The downlink memory module, downlink comparator, downlink AND gate circuit, downlink lead to delay timer pass through respectively input terminal,
After output end is sequentially connected, it is connected jointly with another input terminal of the OR circuit, forms downlink and protect branch,
It is mutual commonly through DC800 DC converter and electric current after the remaining input terminal of uplink comparator and downlink comparator is in parallel
The signal output end of sensor is connected, and current transformer covers on the main electromotor main power supply line, and uplink AND gate circuit remains
Remaining input terminal is connected with upstream switch, and the remaining input terminal of downlink AND gate circuit is connected with downing switch,
It is jointly defeated with the delay parameter after uplink leads to the remaining input terminal parallel connection of delay timer and the logical delay timer of downlink
Enter mechanism to be connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820717403.1U CN208127866U (en) | 2018-05-14 | 2018-05-14 | Main hoist protects circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820717403.1U CN208127866U (en) | 2018-05-14 | 2018-05-14 | Main hoist protects circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208127866U true CN208127866U (en) | 2018-11-20 |
Family
ID=64185088
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820717403.1U Active CN208127866U (en) | 2018-05-14 | 2018-05-14 | Main hoist protects circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208127866U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108429232A (en) * | 2018-05-14 | 2018-08-21 | 兖州煤业股份有限公司 | Main hoist protects circuit |
-
2018
- 2018-05-14 CN CN201820717403.1U patent/CN208127866U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108429232A (en) * | 2018-05-14 | 2018-08-21 | 兖州煤业股份有限公司 | Main hoist protects circuit |
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