CN205444288U - Electric control system of frequency conversion excavator - Google Patents
Electric control system of frequency conversion excavator Download PDFInfo
- Publication number
- CN205444288U CN205444288U CN201521130270.0U CN201521130270U CN205444288U CN 205444288 U CN205444288 U CN 205444288U CN 201521130270 U CN201521130270 U CN 201521130270U CN 205444288 U CN205444288 U CN 205444288U
- Authority
- CN
- China
- Prior art keywords
- power supply
- control unit
- voltage power
- catalyst
- detection means
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000006243 chemical reaction Methods 0.000 title abstract 3
- 239000003054 catalyst Substances 0.000 claims description 57
- 238000001514 detection method Methods 0.000 claims description 39
- 230000005611 electricity Effects 0.000 abstract description 5
- 230000001737 promoting effect Effects 0.000 abstract description 4
- 238000010276 construction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
Landscapes
- Stopping Of Electric Motors (AREA)
Abstract
The utility model discloses an electric control system of frequency conversion excavator, include: the power supply detected device, high voltage power supply, the high -voltage board, the high pressure starting contactor, high pressure supply circuit, promote the contactor, the low voltage power supply on -off switch and the low voltage power supply, high voltage power supply, the high -voltage board, the high pressure starting contactor, high pressure supply circuit connects the back with promotion contactor electricity in proper order, it supplied power with electric connection of the promotion motor of frequency conversion excavator to promote the contactor, the low voltage power supply pass through the the low voltage power supply on -off switch respectively with the the control unit of high -voltage board, the the control unit of high pressure starting contactor, high pressure supply circuit's the control unit connects with the the control unit electricity that promotes the contactor, the sense terminal and the high -pressure supply circuit electricity of power supply detected device are connected, the control end of power supply detected device is parallelly connected with the the low voltage power supply on -off switch. The utility model discloses just can carry out the low voltage power supply's shutoff behind feasible must the stopping in the power supply to promoting the motor to it locks in proper order to realize the shut down.
Description
Technical field
This utility model relates to variable-frequency excavator correlative technology field, the electric control system of a kind of variable-frequency excavator.
Background technology
Variable-frequency excavator is powered for lifting motor after transformator and rectifier cabinet by high voltage power supply, voltage source the control circuit being other provides and controls voltage.The normal boot sequence of variable-frequency excavator is: first starts low-tension supply, restarts high voltage power supply, then starts rectification, finally switches mining mode, now promotes catalyst not on-load adhesive, and when variable-frequency excavator is shut down, order is contrary.If but during variable-frequency excavator entrucking, when lifting motor operates, closedown of low-tension supply being bypassed the immediate leadership, then owing to lifting motor is still in generating state, in addition inverter cabinet electric capacity storage electric energy, now promoting catalyst can discharge generation arc light suddenly with the stopping of low-tension supply.Cause contact and guard shield adhesion of going out time serious, when starting next time, catalyst can be burnt.
Utility model content
Based on this, it is necessary to cannot avoid when stopping excavator for prior art, close, owing to maloperation causes low-tension supply to be bypassed the immediate leadership, the technical problem caused the accident, it is provided that the electric control system of a kind of variable-frequency excavator.
nullA kind of electric control system of variable-frequency excavator，Including: for electric detection means、High voltage power supply、High voltage startup catalyst、High-voltage board、High-voltage power supply circuit、Promote catalyst、Low-tension supply on and off switch and low-tension supply，Described high voltage power supply、Described high-voltage board、Described high voltage startup catalyst、After described high-voltage power supply circuit and described lifting catalyst are sequentially connected electrically，Described lifting catalyst electrically connects with the lifting motor of described variable-frequency excavator and is powered，Described low-tension supply by described low-tension supply on and off switch respectively with the control unit of described high-voltage board、The control unit of described high voltage startup catalyst、The control unit of described high-voltage power supply circuit and the control unit electrical connection of described lifting catalyst，The described test side for electric detection means electrically connects with described high-voltage power supply circuit，The described control end for electric detection means is in parallel with described low-tension supply on and off switch，When described confession electric detection means detects that described high-voltage power supply circuit is in "on" position in described test side,，Control the conducting of described control end，When described confession electric detection means detects that described high-voltage power supply circuit is in off-position in described test side,，Control described control end to disconnect.
Further, one end of described low-tension supply on and off switch electrically connects with described low-tension supply, the other end and the control unit of described high-voltage board, the control unit of described high voltage startup catalyst, the control unit of described high-voltage power supply circuit and the control unit of described lifting catalyst are electrically connected, described one end controlling end for electric detection means electrically connects with described low-tension supply, the other end and the control unit of described high-voltage board, the control unit of described high voltage startup catalyst, the control unit of described high-voltage power supply circuit and the control unit of described lifting catalyst are electrically connected.
Further, described one end controlling end for electric detection means electrically connects with described low-tension supply, and the other end is electrically connected by the control unit of power-off delay relay with the control unit of described high-voltage board, the control unit of described high voltage startup catalyst, the control unit of described high-voltage power supply circuit and described lifting catalyst.
Further, described high-voltage power supply circuit includes main transformer cabinet, rectifier cabinet and the inverter cabinet being sequentially connected electrically.
Further, described is to detect the rectification operation relay that described rectifier cabinet runs for electric detection means, and the described test side for electric detection means is the normally opened point that described rectification runs relay.
Further, it is the inverter cabinet operation relay detecting the operation of described inverter cabinet for electric detection means, the described normally opened point that test side is described inverter operation relay for electric detection means.
Further, described low-tension supply on and off switch is low pressure stop button.
This utility model is by parallel with the low-tension supply on and off switch controlling described low-tension supply break-make for the control end for electric detection means; described confession electric detection means is when described high-voltage power supply circuit is in "on" position; control the conducting of described control end; described confession electric detection means is when described high-voltage power supply circuit is in off-position; control the disconnection of described control end; making must be in high-voltage power supply circuit power-off; after i.e. the power supply to lifting motor stops; just can carry out the shutoff of low-tension supply, thus realize shutdown sequence locking.
Accompanying drawing explanation
Fig. 1 is the structural representation of the electric control system of a kind of variable-frequency excavator of this utility model.
Detailed description of the invention
The utility model is described in more detail with specific embodiment below in conjunction with the accompanying drawings.
nullIt is illustrated in figure 1 the structural representation of the electric control system of a kind of variable-frequency excavator of this utility model，Including: for electric detection means 6、High voltage power supply 1、High-voltage board 2、High voltage startup catalyst 21、High-voltage power supply circuit 3、Promote catalyst 31、Low-tension supply on and off switch 41 and low-tension supply 4，Described high voltage power supply 1、Described high-voltage board 2、Described high voltage startup catalyst 21、After described high-voltage power supply circuit 3 and described lifting catalyst 31 are sequentially connected electrically，Described lifting catalyst 31 electrically connects with the lifting motor 51 of described variable-frequency excavator 5 and is powered，Described low-tension supply 4 by described low-tension supply on and off switch 41 respectively with the control unit of described high-voltage board 2、The control unit of described high voltage startup catalyst 21、The control unit of described high-voltage power supply circuit 3 and the control unit electrical connection of described lifting catalyst 31，The described test side 61 for electric detection means 6 electrically connects with described high-voltage power supply circuit 3，The described control end 62 for electric detection means 6 is in parallel with described low-tension supply on and off switch 41，When described confession electric detection means 6 detects that described high-voltage power supply circuit 3 is in "on" position in described test side 61,，Control described control end 62 to turn on，When described confession electric detection means 6 detects that described high-voltage power supply circuit 3 is in off-position in described test side 61,，Control described control end 62 to disconnect.
High voltage startup catalyst 21 and lifting catalyst 31 are preferably relay, high voltage startup catalyst 21 and the control unit i.e. control unit of relay of lifting catalyst 31.High voltage startup catalyst 21 and lifting catalyst 31 are being controlled break-make by control unit, powered by the control unit that low-tension supply 4 is high-voltage power supply circuit 3, high voltage startup catalyst 21 can be caused when the control unit dead electricity of high voltage startup catalyst 21 and lifting catalyst 31 and promote catalyst 31 from release.Due to reasons such as maloperation, low-tension supply fault or spread of voltages, it is likely to cause low-tension supply on and off switch 41 in the properly functioning lower release of high-voltage power supply circuit rectification, such as discharge in the case of high voltage startup, thus cause promoting catalyst 31 and discharge voluntarily owing to control unit loses voltage, if now lifting motor is in running, the contact promoting catalyst 31 will produce the strongest arc light, causes lifting catalyst 31 to burn.
This utility model, when described high-voltage power supply circuit is energized, control end conducting so that even if low-tension supply on and off switch 41 disconnects, low-tension supply 4 remains on conducting with the control unit of high-voltage power supply circuit 3, thus avoids lifting catalyst 31 dead electricity to cause from release and burn.And when direct current supply power-off, controlling end disconnects, then low-tension supply 4 is controlled break-make by low-tension supply on and off switch 41.
Low-tension supply 4 is preferably electrically connected with the control unit of high-voltage board 2 by auxiliary transformer 7.
This utility model makes could to turn off low-tension supply after stopping the power supply of lifting motor, thus realizes shutdown sequence locking, it is to avoid catalyst is charged causes the accident with lifting, reduction equipment failure rate and accident rate.
Wherein in an embodiment, one end of described low-tension supply on and off switch 41 electrically connects with described low-tension supply 4, the other end and the control unit of described high-voltage board 2, the control unit of described high voltage startup catalyst 21, the control unit of described high-voltage power supply circuit 3 and the control unit of described lifting catalyst 31 are electrically connected, described one end controlling end for electric detection means 6 electrically connects with described low-tension supply 4, the other end and the control unit of described high-voltage board 2, the control unit of described high voltage startup catalyst 21, the control unit of described high-voltage power supply circuit 3 and the control unit of described lifting catalyst 31 are electrically connected.
It is in parallel with low-tension supply on and off switch 41 that the present embodiment has implemented the control end for electric detection means 6, simple in construction, it is simple to construction.
Wherein in an embodiment, described one end controlling end for electric detection means 6 electrically connects with described low-tension supply 4, and the other end is electrically connected by the control unit of power-off delay relay with the control unit of described high-voltage board 2, the control unit of described high voltage startup catalyst 21, the control unit of described high-voltage power supply circuit 3 and described lifting catalyst 31.
The power-off delay relay of the present embodiment uses existing equipment, when the input of power-off delay relay has signal, not Time delay program, outfan remains closed, and when the input of power-off delay relay stops input signal, Time delay program, after delay time, outfan disconnects.Even if the present embodiment makes the maloperation when shutting down first be disconnected low-tension supply on and off switch; stop the most again lifting motor is powered, then owing to there being the existence of power-off delay relay, still can guarantee that after stopping lifting motor being powered; through delay time, turn off low-tension supply.
Wherein in an embodiment, described high-voltage power supply circuit 3 includes main transformer cabinet 32, rectifier cabinet 33 and the inverter cabinet 34 being sequentially connected electrically.
Wherein in an embodiment, described is to detect the rectification operation relay that described rectifier cabinet 33 runs for electric detection means 6, and the described end that controls for electric detection means 6 is the normally opened point that described rectification runs relay.
It is existing to be arranged in rectifier cabinet 33 for detecting the relay of the running status of rectifier cabinet 33 that rectification runs relay, when rectifier cabinet 33 operation carries out rectification output, rectification runs relay power, now its normally opened Guan Bi, and when rectifier cabinet 33 is out of service, rectification runs relay power-off, its normally opened disconnection.Owing to rectifier cabinet 33 is for being powered lifting motor 51, therefore, the running status of detection rectifier cabinet 33, just can determine that the power supply to lifting motor 51.
Preferably, described low-tension supply on and off switch 41 is low pressure stop button.
Wherein in an embodiment, it is to detect the inverter cabinet operation relay that described inverter cabinet 34 runs for electric detection means 6, the described normally opened point that control end is described inverter operation relay for electric detection means 6.
Inverter cabinet is run relay as electric detection means by the present embodiment so that must could stop low-tension supply after inverter cabinet is the most out of service, avoids accident produced by inverter cabinet electric capacity storage electric energy further.
Embodiment described above only have expressed several embodiments of the present utility model, and it describes more concrete and detailed, but therefore can not be interpreted as the restriction to this utility model the scope of the claims.It should be pointed out that, for the person of ordinary skill of the art, without departing from the concept of the premise utility, it is also possible to make some deformation and improvement, these broadly fall into protection domain of the present utility model.Therefore, the protection domain of this utility model patent should be as the criterion with claims.
Claims (7)
- null1. the electric control system of a variable-frequency excavator，It is characterized in that，Including: for electric detection means、High voltage power supply、High-voltage board、High voltage startup catalyst、High-voltage power supply circuit、Promote catalyst、Low-tension supply on and off switch and low-tension supply，Described high voltage power supply、Described high-voltage board、Described high voltage startup catalyst、After described high-voltage power supply circuit and described lifting catalyst are sequentially connected electrically，Described lifting catalyst electrically connects with the lifting motor of described variable-frequency excavator and is powered，Described low-tension supply by described low-tension supply on and off switch respectively with the control unit of described high-voltage board、The control unit of described high voltage startup catalyst、The control unit of described high-voltage power supply circuit and the control unit electrical connection of described lifting catalyst，The described test side for electric detection means electrically connects with described high-voltage power supply circuit，The described control end for electric detection means is in parallel with described low-tension supply on and off switch，When described confession electric detection means detects that described high-voltage power supply circuit is in "on" position in described test side,，Control the conducting of described control end，When described confession electric detection means detects that described high-voltage power supply circuit is in off-position in described test side,，Control described control end to disconnect.
- The electric control system of variable-frequency excavator the most according to claim 1, it is characterized in that, one end of described low-tension supply on and off switch electrically connects with described low-tension supply, the other end and the control unit of described high-voltage board, the control unit of described high voltage startup catalyst, the control unit of described high-voltage power supply circuit and the control unit of described lifting catalyst are electrically connected, described one end controlling end for electric detection means electrically connects with described low-tension supply, the other end and the control unit of described high-voltage board, the control unit of described high voltage startup catalyst, the control unit of described high-voltage power supply circuit and the control unit of described lifting catalyst are electrically connected.
- The electric control system of variable-frequency excavator the most according to claim 2, it is characterized in that, described one end controlling end for electric detection means electrically connects with described low-tension supply, and the other end is electrically connected by the control unit of power-off delay relay with the control unit of described high-voltage board, the control unit of described high voltage startup catalyst, the control unit of described high-voltage power supply circuit and described lifting catalyst.
- The electric control system of variable-frequency excavator the most according to claim 1, it is characterised in that described high-voltage power supply circuit includes main transformer cabinet, rectifier cabinet and the inverter cabinet being sequentially connected electrically.
- The electric control system of variable-frequency excavator the most according to claim 4, it is characterized in that, described is to detect the rectification operation relay that described rectifier cabinet runs for electric detection means, and the described test side for electric detection means is the normally opened point that described rectification runs relay.
- The electric control system of variable-frequency excavator the most according to claim 4, it is characterized in that, it is to detect the inverter cabinet operation relay that described inverter cabinet runs, the described normally opened point that test side is described inverter operation relay for electric detection means for electric detection means.
- The electric control system of variable-frequency excavator the most according to claim 1, it is characterised in that described low-tension supply on and off switch is low pressure stop button.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521130270.0U CN205444288U (en) | 2015-12-30 | 2015-12-30 | Electric control system of frequency conversion excavator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521130270.0U CN205444288U (en) | 2015-12-30 | 2015-12-30 | Electric control system of frequency conversion excavator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205444288U true CN205444288U (en) | 2016-08-10 |
Family
ID=56599051
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521130270.0U Active CN205444288U (en) | 2015-12-30 | 2015-12-30 | Electric control system of frequency conversion excavator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205444288U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110857032A (en) * | 2018-08-24 | 2020-03-03 | 广州汽车集团股份有限公司 | Vehicle emergency power-off system and vehicle |
-
2015
- 2015-12-30 CN CN201521130270.0U patent/CN205444288U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110857032A (en) * | 2018-08-24 | 2020-03-03 | 广州汽车集团股份有限公司 | Vehicle emergency power-off system and vehicle |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106655478B (en) | Low-voltage emergency safety power supply system of household garbage power plant and control method thereof | |
| CN202435320U (en) | Protection circuit of soft starter | |
| JP5739112B2 (en) | Intelligent distribution board, distribution device, power failure countermeasure system, and distribution method | |
| CN201750204U (en) | Direct current double-power-supply intelligent switching device | |
| CN104079065B (en) | Dislocation generation system uses simultaneous interconnecting mode to access electric network operation method | |
| CN201656549U (en) | Automatic switching device of UPS | |
| CN203352250U (en) | Double-input uninterruptible power supply system | |
| CN102122839A (en) | Electric-dazzling prevention auxiliary power supply in low-voltage alternating current control loop and power supply method thereof | |
| JP2017028814A (en) | Power supply device and back feed protection method for the same | |
| CN104283263A (en) | Direct-current charging pile main circuit double-control power supply system and control method thereof | |
| JP2020127357A (en) | Charge/discharge device and power supply switching system | |
| CN203406658U (en) | Storage battery detection device of direct current system | |
| CN110100370A (en) | The switching construction that switches between two input terminals, equipment, system and method | |
| CN102709116A (en) | Alternating-current contactor in low-voltage alternating-current control circuit and control method of alternating-current contactor | |
| CN204118813U (en) | Direct-current charging post main circuit dual control electric power system | |
| CN112072741B (en) | Method and device for realizing one-key starting of household energy storage system | |
| CN205444288U (en) | Electric control system of frequency conversion excavator | |
| CN106712276B (en) | A kind of interlocking-type intermediate frequency power supply major-minor machine automatic switch-over circuit | |
| CN205846863U (en) | A kind of power plant special remote monitoring system for diesel generator set of black starting-up | |
| CN204028321U (en) | Motor detection device | |
| CN107370175B (en) | Elevator auxiliary system | |
| CN105207343A (en) | Control circuit for conversion of two power sources | |
| CN104393671A (en) | Automatic switch realization method for standby power supply under small load | |
| CN113013859B (en) | Improved direct-current charger scram and discharge control circuit and control method | |
| CN201444469U (en) | Automatic air switch with temperature protection function |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |