CN202678927U - Electric shovel handle safety control system - Google Patents
Electric shovel handle safety control system Download PDFInfo
- Publication number
- CN202678927U CN202678927U CN 201220341004 CN201220341004U CN202678927U CN 202678927 U CN202678927 U CN 202678927U CN 201220341004 CN201220341004 CN 201220341004 CN 201220341004 U CN201220341004 U CN 201220341004U CN 202678927 U CN202678927 U CN 202678927U
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- Prior art keywords
- power supply
- power
- voltage
- relay
- control system
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- Expired - Fee Related
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Abstract
The utility model discloses an electric shovel handle safety control system, which comprises a handle-controlled micro switch, power supplies and an intermediate relay and further comprises a small relay, a leakage protector and a fuse, wherein the power supplies include an alternating-current power supply and a direct-current power supply; the small relay is arranged between the handle-controlled micro switch and the intermediate relay and is connected with the direct-current power supply; and the fuse, a high-voltage frequency converter, the leakage protector and the alternating-current power supply, which are sequentially connected, are arranged between the handle-controlled micro switch and the small relay. The system is simple in structure, reasonable in layout and convenient to operate; an AC24V safe voltage is used and the method of using low voltage to control high voltage is adopted so that operators can be kept away from direct damage of high voltage and large current to human bodies, the frequency of accidents can be reduced, and response is fast at the early period of accidents; and the function of timely switching off a power supply device is provided so that safety accidents caused by excessive voltage can be better avoided and the production continuity and production efficiency can be ensured.
Description
Technical field
The utility model relates to a kind of control system, is specifically related to a kind of power shovel handle safety control system.
Background technology
Power shovel is the indispensable large-scale auxiliary equipment of digging operation such as mining industry, it mainly is by the control operation of handgrip controller, realize walking, promote, revolution, the actions such as pushing, in the power shovel that uses at present now, original handgrip control circuit: use DC 220V DC power control, when the operative employee starts handgrip controller sensitive switch, the auxiliary relay action, drive relevant executive component work, when leaking electricity such as power supply, cause easily large electric current, so that power shovel handgrip electric arc of discharge spark, and in discharge, each control branch of power shovel can occur and out-of-control phenomenon occur, easily cause in various degree electric shock and calcination to operating personnel, have great potential safety hazard, and can affect continuation and the production efficiency of production.
The utility model content
The purpose of this utility model is to provide a kind of power shovel handle safety control system, avoids overtension and the security incident that causes, guarantees production continuation and production efficiency.
For realizing this purpose, the utility model has adopted following technical scheme:
A kind of power shovel handle safety control system; the handgrip control sensitive switch, power supply and the auxiliary relay that comprise connection; also comprise miniature relay, earth leakage protective device, fuse; described power supply comprises AC power and DC power supply; be provided with miniature relay between described handgrip control sensitive switch and the described auxiliary relay; and described miniature relay connects described DC power supply, is provided with described fuse, earth leakage protective device and the AC power that is connected successively between described handgrip control sensitive switch and the miniature relay.
Preferably further technological improvement, in the utility model, described AC power is provided with ac power switch.
Preferably further technological improvement, in the utility model, described DC power supply is provided with DC power supply switch.
Preferably further technological improvement, in the utility model, described miniature relay voltage is AC 24V.
The utility model contrast prior art has the following advantages: simple in structure, rationally distributed, easy to operate, the safe voltage of use AC 24V utilizes low-voltage to control high-tension mode, make operating personnel away from the direct injury to human body of high voltage, large electric current, minimizing accident occurrence frequency, the accident early period of origination responds fast, is provided with the function of the device of in time cutting off the electricity supply, the security incident that can better avoid overtension and cause is guaranteed production continuation and production efficiency.
Description of drawings
Accompanying drawing 1 is rear circuit controling drawing for the utility model improves.
Embodiment
Referring now to accompanying drawing, further describe the utility model.
As shown in Figure 1; a kind of power shovel handle safety control system; the handgrip control sensitive switch 1, power supply 2 and the auxiliary relay 3 that comprise connection; also comprise miniature relay 4, earth leakage protective device 5, high voltage converter 6 and fuse 7; described power supply 3 comprises AC power 31 and DC power supply 32; be provided with miniature relay 4 between handgrip control sensitive switch 1 and the auxiliary relay 3; and miniature relay 4 connects DC power supply 32, is provided with fuse 7, transformer 6, earth leakage protective device 5 and the AC power 31 that is connected successively between handgrip control sensitive switch 1 and the miniature relay 4.
The voltage of AC power 31 uses the 220V as AC, and the voltage of DC power supply 32 uses the 220V as DC.
In order better to control power supply, in the utility model, AC power 31 positions are provided with ac power switch 311, DC power supply 32 is provided with DC power supply switch 321, and the internal electric source of handgrip control sensitive switch 1 becomes the control Power supply alteration of DC 220 V the power supply of AC 24 V by miniature relay 4, use the safe voltage of AC 24V, utilize low-voltage to control high-tension mode, make operating personnel away from the direct injury to human body of high voltage, large electric current, the fail safe that has improved whole equipment.
For better fail safe, total interface place reinforced insulation intensity that can also be in control loop reduces the probability of circuit broken skin.
Above-described the utility model execution mode does not consist of the restriction to the utility model protection range.Any modification of within spirit of the present utility model and principle, doing, be equal to and replace and improvement etc., all should be included within the claim protection range of the present utility model.
Claims (4)
1. power shovel handle safety control system; the handgrip control sensitive switch, power supply and the auxiliary relay that comprise connection; it is characterized in that; also comprise miniature relay, earth leakage protective device, fuse; described power supply comprises AC power and DC power supply; be provided with miniature relay between described handgrip control sensitive switch and the described auxiliary relay; and described miniature relay connects described DC power supply, is provided with described fuse, earth leakage protective device and the AC power that is connected successively between described handgrip control sensitive switch and the miniature relay.
2. a kind of power shovel handle safety control system according to claim 1 is characterized in that described AC power is provided with ac power switch.
3. a kind of power shovel handle safety control system according to claim 1 is characterized in that described DC power supply is provided with DC power supply switch.
4. a kind of power shovel handle safety control system according to claim 1 is characterized in that described miniature relay voltage is AC 24V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220341004 CN202678927U (en) | 2012-07-13 | 2012-07-13 | Electric shovel handle safety control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220341004 CN202678927U (en) | 2012-07-13 | 2012-07-13 | Electric shovel handle safety control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202678927U true CN202678927U (en) | 2013-01-16 |
Family
ID=47499802
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220341004 Expired - Fee Related CN202678927U (en) | 2012-07-13 | 2012-07-13 | Electric shovel handle safety control system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202678927U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104518478A (en) * | 2013-09-30 | 2015-04-15 | 哈尔滨飞机工业集团有限责任公司 | Unloading device for airplane power source system |
-
2012
- 2012-07-13 CN CN 201220341004 patent/CN202678927U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104518478A (en) * | 2013-09-30 | 2015-04-15 | 哈尔滨飞机工业集团有限责任公司 | Unloading device for airplane power source system |
| CN104518478B (en) * | 2013-09-30 | 2017-08-25 | 哈尔滨飞机工业集团有限责任公司 | A kind of discharge mechanism of aircraft power system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130116 Termination date: 20170713 |