CN202837870U - Electric control system of novel electric hydraulic grab bucket - Google Patents
Electric control system of novel electric hydraulic grab bucket Download PDFInfo
- Publication number
- CN202837870U CN202837870U CN 201220479269 CN201220479269U CN202837870U CN 202837870 U CN202837870 U CN 202837870U CN 201220479269 CN201220479269 CN 201220479269 CN 201220479269 U CN201220479269 U CN 201220479269U CN 202837870 U CN202837870 U CN 202837870U
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- Prior art keywords
- grab bucket
- relay
- coil
- control system
- normally
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- Expired - Fee Related
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Abstract
The utility model relates to an electric control system of a novel electric hydraulic grab bucket. The electric control system comprises a power supply incoming line connecting terminal, an air switch, an alternating current contactor coil and a main contact and a normally-open auxiliary contact of the alternating current contactor, a thermorelay, a grab bucket incoming line connecting terminal, a grab bucket motor, a fuse wire A, a fuse wire B, a self-reset option switch, a normally-open button switch, a normally closed button switch, a transformer, an indicator light, a phase sequence relay, a power-on time-delay relay, and an oil temperature controller. The electric control system of the novel electric hydraulic grab bucket has the advantage of preventing machine damage accident which is caused by reverse rotation of a unidirectional rotary oil pump driven by a motor due to misconnection of phase lines, or preventing the condition that a hydraulic system of a grab bucket is damaged or the grab bucket cannot work normally which is caused by hydraulic oil temperature exceeding the standard due to improper use. The electric control system of the novel electric hydraulic grab bucket has the advantages of simple structure, convenient manufacture, ideal effect, reduced maintenance cost of the grab bucket, and improved working efficiency of the grab bucket.
Description
Technical field
The utility model relates to a kind of instrument or device for crane, winch or coaster handling goods, relates in particular to a kind of electric-control system of electric hydraulic grab.
Background technology
In known technology, the electric-control system of electric hydraulic bucket commonly used does not have the protection of oil pump sense of rotation and hydraulic oil temperature protection.Its weak point is can cause the grab bucket oil pump to damage or the grab bucket cisco unity malfunction, increases the grab bucket maintenance cost, reduces the work efficiency of grab bucket.
The utility model content
The purpose of this utility model is the electric-control system that a kind of electric hydraulic grab of guaranteeing in accordance with regulations direction running of oil pump, also shutting down in the too high situation of oil temperature is provided for the prior art weak point.
The utility model is by the following technical programs in to realize: a kind of electric-control system of electric hydraulic grab, it comprises electric power incoming line connection terminal, air switch, ac contactor coil and main contacts thereof and Chang Kai auxiliary contact, electrothermal relay, grab bucket motor inlet wire connection terminal, grab bucket motor, fusible link A, fusible link B, Self-resetting selector switch, normally open push button switch, normally closed push button switch, transformer, pilot lamp, it is characterized in that also having phase sequence relay, energization delay relay, oil temperature controller; Described phase sequence relay is attempted by the air switch of main control loop, between the A.C. contactor main contacts, the normally closed contact of energization delay relay E is connected between ac contactor coil and the thermal relay normally closed contact, the normally opened contact of energization delay relay E, and coil one end of energization delay relay E and the secondary coil of transformer, A.C. contactor often leaves the auxiliary contact common port and joins, normally closed contact one end of phase sequence relay and the secondary coil other end of transformer join, the energization delay relay C coil of the normally closed contact other end of phase sequence relay and Self-resetting selector switch, solenoid valve F coil, solenoid valve G coil, energization delay relay D coil, the normally closed contact of electrothermal relay, the common port of the normally opened contact of oil temperature controller is connected, and another terminals of oil temperature controller normally opened contact are connected with the other end of energization delay relay E coil.
Be serially connected with connection lamp hummer between the common port of the normally opened contact of the normally opened contact of described energization delay relay E and oil temperature control.
Good effect of the present utility model is: the electric-control system of a kind of electric hydraulic grab that the utility model proposes has following advantage: the utility model is that a kind of stopping causes and exceed standard hydraulic oil temperature the hydraulic system of grabbing bucket is damaged or the situation of grab bucket cisco unity malfunction because motor phase line wrong causes motor to drive engine-damaged accident that single direction rotation oil pump counter-rotating occurs or improper use.The utlity model has simple in structurely, easy to make, satisfactory for result, reduce the grab bucket maintenance cost, improve the plurality of advantages of grab bucket work efficiency.
Description of drawings
Fig. 1 is an embodiment electrical principle of the utility model schematic diagram.
The utility model will be further described below in conjunction with embodiment:
Fig. 1 is an embodiment electrical principle of the utility model schematic diagram.Among the figure, a kind of electric-control system of electric hydraulic grab, it comprises: electric power incoming line connection terminal 1, air switch 2, ac contactor coil 20 and main contacts 3 thereof and Chang Kai auxiliary contact 9, electrothermal relay 4, grab bucket motor inlet wire connection terminal 5, grab bucket motor 6, fusible link A 7, fusible link B 8, Self-resetting selector switch 11, normally open push button switch 18, normally closed push button switch 19, transformer 23, pilot lamp 24, phase sequence relay 10, energization delay relay, oil temperature controller; Described phase sequence relay 10 is attempted by the air switch 2 of main control loop, between the A.C. contactor main contacts 3, the normally closed contact 21 of energization delay relay E is connected between ac contactor coil 20 and the thermal relay normally closed contact 22, the normally opened contact 25 of energization delay relay E, and coil 27 1 ends of energization delay relay E and the secondary coil of transformer 23, the common port that auxiliary contact 9 often left by A.C. contactor joins, normally closed contact 29 1 ends of phase sequence relay and the secondary coil other end of transformer 23 join, normally closed contact 29 other ends of phase sequence relay and the energization delay relay C coil 12 of Self-resetting selector switch 11, solenoid valve F coil 13, solenoid valve G coil 16, energization delay relay D coil 17, the normally closed contact 22 of electrothermal relay, the common port of the normally opened contact 28 of oil temperature controller is connected, and another terminals of oil temperature controller normally opened contact 28 are connected with the other end of energization delay relay E coil 27.
The utility model is further taked following measure: be serially connected with connection lamp hummer 26 between the common port of the normally opened contact 28 of the normally opened contact 25 of described energization delay relay E and oil temperature control.
The utility model is like this work: the electric-control system of electric hydraulic grab is before work, external power supply is connected on the inlet wire connection terminal 1, grab bucket motor inlet wire connection terminal 5 links to each other with grab bucket motor 6, the time that opens and closes according to the grab bucket of hydraulic system setting is adjusted the delay time of energization delay relay C and energization delay relay D, and energization delay relay E delay time is 1-2 second.When work, first air switch 2 closures, pilot lamp 24 is bright.The rotation direction consistent (be generally and turn clockwise) of the phase sequence setting of external power supply inlet wire cable and the grab bucket motor 6 that is joining oil pump is pressed normally open push button switch 18, ac contactor coil 20 energisings, and 3 adhesives of A.C. contactor main contacts, grab bucket motor 6 rotates.Grab bucket is put on the material, Self-resetting selector switch 11 is forwarded on one side, 13 energisings of solenoid valve F coil, the crawl goods is closed in grab bucket, and time-delay is to the time of setting, the automatic phase down of grabbing bucket.Grab bucket is moved on to discharge pit, Self-resetting selector switch 11 is forwarded to another side, 16 energisings of solenoid valve G coil, discharging is opened in grab bucket, and time-delay is to the time of setting, and grab bucket stops to open automatically, enters next circulation.If ambient air temperature is very high, grab bucket is worked around the clock, oil temperature raises and surpasses the oil temperature (example: 80 ℃) of setting, oil temperature gauge tap normally opened contact 28 closures, and energization delay relay E coil 27 time-delay 1-2 switched on after second, energization delay relay E normally opened contact 25 closures, the connection lamp honeybee device 26 that often rings powers alarm, and energization delay relay E normally closed contact 21 disconnects ac contactor coil 20 dead electricity simultaneously, grab bucket motor 6 quits work, and restarts periodic duty when getting back to normal value etc. oil temperature.If it is former thereby cause the phase error of the power supply phase line that enters inlet wire connection terminal 1 that grab bucket and the crane displacement of electronic box etc. are installed, phase sequence relay normally closed contact 29 disconnects, the electric-control system of electric hydraulic grab can not be worked, must be accurate the phase transition of the power supply phase line of electronic box inlet wire cable, the sense of rotation of motor that guarantees oil pump is accurate, can work and injury-free.
The above reaches by reference to the accompanying drawings embodiment and has described embodiment of the present utility model; the structure that embodiment provides does not consist of restriction of the present utility model; those skilled in the art can show and need to adjust according to real in this area, make within the scope of the appended claims various distortion or modification all in protection domain.
Claims (2)
1. the electric-control system of an electric hydraulic grab, it comprises electric power incoming line connection terminal, air switch, ac contactor coil and main contacts thereof and Chang Kai auxiliary contact, grab bucket motor inlet wire connection terminal, grab bucket motor, fusible link A, fusible link B, Self-resetting selector switch, normally open push button switch, normally closed push button switch, electrothermal relay, transformer, pilot lamp, it is characterized in that also having phase sequence relay, energization delay relay, oil temperature controller; Described phase sequence relay is attempted by the air switch of main control loop, between the A.C. contactor main contacts, the normally closed contact of energization delay relay E is connected between ac contactor coil and the thermal relay normally closed contact, the normally opened contact of energization delay relay E, and coil one end of energization delay relay E and the secondary coil of transformer, A.C. contactor often leaves the auxiliary contact common port and joins, normally closed contact one end of phase sequence relay and the secondary coil other end of transformer join, the energization delay relay C coil of the normally closed contact other end of phase sequence relay and self-resetting switch, solenoid valve F coil, solenoid valve G coil, energization delay relay D coil, the normally closed contact of electrothermal relay, the common port of the normally opened contact of oil temperature controller is connected, and another terminals of oil temperature controller normally opened contact are connected with the other end of energization delay relay E coil.
2. the electric-control system of electric hydraulic grab according to claim 1 is characterized in that, is serially connected with connection lamp hummer between the common port of the normally opened contact of the normally opened contact of described energization delay relay E and oil temperature control.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220479269 CN202837870U (en) | 2012-09-17 | 2012-09-17 | Electric control system of novel electric hydraulic grab bucket |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220479269 CN202837870U (en) | 2012-09-17 | 2012-09-17 | Electric control system of novel electric hydraulic grab bucket |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202837870U true CN202837870U (en) | 2013-03-27 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220479269 Expired - Fee Related CN202837870U (en) | 2012-09-17 | 2012-09-17 | Electric control system of novel electric hydraulic grab bucket |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202837870U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103336445A (en) * | 2013-06-04 | 2013-10-02 | 舒城县红叶五金塑料制品有限公司 | A circuit portion of a semi-automatic wood children's bed trademark thermoprinting machine |
| US20230356986A1 (en) * | 2019-08-21 | 2023-11-09 | Tadano Ltd. | Work vehicle |
-
2012
- 2012-09-17 CN CN 201220479269 patent/CN202837870U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103336445A (en) * | 2013-06-04 | 2013-10-02 | 舒城县红叶五金塑料制品有限公司 | A circuit portion of a semi-automatic wood children's bed trademark thermoprinting machine |
| US20230356986A1 (en) * | 2019-08-21 | 2023-11-09 | Tadano Ltd. | Work vehicle |
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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 |
Granted publication date: 20130327 Termination date: 20140917 |
|
| EXPY | Termination of patent right or utility model |