CN202560421U - Controller, system and engineering mechanical device for protecting starting motor - Google Patents
Controller, system and engineering mechanical device for protecting starting motor Download PDFInfo
- Publication number
- CN202560421U CN202560421U CN201220216893XU CN201220216893U CN202560421U CN 202560421 U CN202560421 U CN 202560421U CN 201220216893X U CN201220216893X U CN 201220216893XU CN 201220216893 U CN201220216893 U CN 201220216893U CN 202560421 U CN202560421 U CN 202560421U
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- starting motor
- power supply
- controller
- system power
- voltage
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Abstract
The utility model discloses a controller, a system and an engineering mechanical device for protecting a starting motor. The starting motor is connected with a power supply system and is used for starting an engine, the controller comprises a receiving device can a processing device, the receiving device is used for receiving a voltage signal which represents a system power supply, and the processing device is connected with the receiving device and is used for disconnecting the starting motor and the system power supply when the voltage of the system power supply is larger than a preset voltage value. The controller is used in engineering mechanical devices, the phenomenon of abnormal damage of the starting motor due to conditions that a user operates a key starting switch mistakenly or the key starting switch fails to perform automatic resetting and the like is avoided, and the construction risk of the user and the product failure rate are reduced, besides, the controller has the advantages of being simple, convenient, reliable and low is cost.
Description
Technical field
The utility model relates to engineering machinery field, is specifically related to a kind of controller and system and engineering mechanical device that is used to protect starting motor.
Background technique
In existing engineering mechanical device (for example, excavator), motor is under the drive of starting motor, to start; Wherein, starting motor is the necessary parts of ato unit, only gets the running of electric back at starting motor; The small gear of starting motor stretches out and is connected with engine crankshaft, could drive engine running, after the engine start; Shut down after the starting motor dead electricity, and break off with engine crankshaft, the startup of starting motor is then controlled by the key enable switch.
Fig. 1 is the starting motor work principle figure of existing technology.As shown in Figure 1, key enable switch 1 one ends are connected with system power supply VCC (24V) via insurance unit 2, and the other end is connected with an end of starting motor 3, the other end ground connection of starting motor 3.When key enable switch 1 is pressed, key enable switch 1 closure then, then starting motor 3 electric back starts.This key enable switch is an automatic reset switch, and after driver's hand left this key enable switch, the key enable switch can automatically reset, and this moment, starting motor also can be thrown off and being connected of engine crankshaft because of outage.
Yet; If the key enable switch fails to automatically reset because of a variety of causes; Perhaps the driver after engine start because of misoperation makes the key enable switch closed once more, starting motor can be once more electric, thereby entry into service and with the engine producing mechanical connection.Can cause the rapid impact of transmission of gear with the motor that runs up of starting motor thus, the phenomenon that is easy to occur breaking the starting motor gear.And the equipment that starting motor and motor are and cost an arm and a leg, procurement cycle is quite long if they are by bad, has not only increased cost, returns the user and has brought certain construction risk.
The model utility content
The purpose of the utility model provides a kind of controller and system and engineering mechanical device that is used to protect starting motor, to solve above-mentioned the problems of the prior art.
To achieve these goals, the utility model provides a kind of controller that is used to protect starting motor, and this starting motor links to each other with system power supply, is used for ato unit, and this controller comprises: reception unit is used to receive the signal of representative system power source voltage; And treatment device, be connected with said reception unit, break off being connected of starting motor and system power supply when being used for voltage in system power supply greater than a predeterminated voltage value.
The utility model also provides a kind of system that is used to protect starting motor, and this system comprises: the controller of starting motor is protected in above-mentioned being used to; And voltage transducer, be connected with reception unit, be used for the detection system power source voltage.
The utility model also provides a kind of engineering mechanical device, comprises starting motor and the motor that is connected with this starting motor, and this starting motor links to each other with power supply and is used for ato unit, and wherein, this equipment comprises that also above-mentioned being used to protect the system of starting motor.
Pass through technique scheme; Controller is judged the state (starting state or non-started state) of motor through receiving system power source voltage signal; And the power supply that starting motor is broken off in control when engine start, can not turn round once more with starting motor after guaranteeing engine start.Can avoid user misoperation key enable switch or key enable switch to break down and the phenomenon of the unusual damage starting motor that situation such as do not automatically reset causes; Thereby reduced user's construction risk and hazard rate, and had the advantage simple, convenient, reliable, that cost is low.
Other feature and advantage of the utility model will partly specify in embodiment subsequently.
Description of drawings
Accompanying drawing is the further understanding that is used to provide the utility model, and constitutes the part of specification, is used to explain the utility model with following embodiment, but does not constitute the restriction to the utility model.In addition, in all the likely places, in whole accompanying drawing, use identical label to represent identical parts.In the accompanying drawings:
Fig. 1 is the starting motor work principle figure of existing technology;
Fig. 2 is the skeleton diagram of controller that is used to protect starting motor according to the utility model embodiment;
Fig. 3 is the skeleton diagram of system that is used to protect starting motor according to the utility model embodiment; And
Fig. 4 is the circuit diagram of system that is used to protect starting motor according to the utility model embodiment.
Description of reference numerals
1 key enable switch, 2 insurance unit
3 starting motors, 4 voltage transducers
5 controllers, 6 relays
85,86,87a, 87,30 terminal
Embodiment
Be elaborated below in conjunction with the embodiment of accompanying drawing to the utility model.Should be understood that embodiment described herein only is used for explanation and explains the utility model, is not limited to the utility model.
Fig. 2 is the skeleton diagram of controller that is used to protect starting motor according to the utility model embodiment.
As shown in Figure 2; The utility model provides a kind of controller 5 that is used to protect starting motor 3, and this starting motor 3 links to each other with system power supply VCC, is used for ato unit; This controller 5 comprises: reception unit 10 is used to receive the signal of the voltage of representative system power supply VCC; And treatment device 12, be connected with reception unit 10, break off being connected of said starting motor 3 and said system power supply VCC when being used for voltage at system power supply VCC greater than a predeterminated voltage value.
Through in the engineering mechanical device of for example full hydraulic excavator, using this controller; Can avoid user misoperation key enable switch or key enable switch to break down and the phenomenon of the unusual damage starting motor that situation such as do not automatically reset causes; Thereby reduced user's construction risk and hazard rate, and had the advantage simple, convenient, reliable, that cost is low.
Usually, generator not work (motor does not start) before, system power supply voltage can not surpass 25.5V, and after generator charged normal work (engine start), system power supply voltage was not less than 27.5V usually.Thereby in the present embodiment, the predeterminated voltage value can be set to 27.5V.In the utility model, it only is exemplary that the predeterminated voltage value is set to 27.5V, is not to be used to limit the utility model.
Fig. 3 is the skeleton diagram of system that is used to protect starting motor according to the utility model embodiment.
As shown in Figure 3, the utility model provides a kind of system that is used to protect starting motor, and this system comprises: being used in the foregoing description protected the controller 5 of starting motor; And voltage transducer 4, be connected with the reception unit 10 of controller 5, be used for the voltage of detection system power supply VCC.
In the present embodiment; This system also comprises: relay 6; This relay 6 is connected between said starting motor 3 and the system power supply VCC, and wherein, said controller 5 is electrically connected with this relay 6; When being used for voltage at said system power supply VCC, controlling this relay 6 and break off greater than this predeterminated voltage value.
Wherein, said controller 5 can be programmable logic controller (PLC) (PLC), single-chip microcomputer, field programmable gate array (FPGA) etc.
In the present embodiment, this system also comprises: key enable switch 1, and starting motor 3 links to each other with system power supply VCC through this key enable switch 1, and relay 6 is connected between key enable switch 1 and the starting motor 3.
The utility model also provides a kind of engineering mechanical device, comprises starting motor 3 and the motor that is connected with this starting motor 3, and this project machinery comprises that also being used in the foregoing description protect the system of starting motor.This project machinery for example can be an excavator.
Fig. 4 is the circuit diagram of system that is used to protect starting motor according to the utility model embodiment.
As shown in Figure 4; System power supply (VCC) is connected to starting motor 3 through insurance unit 2, key enable switch 1; The terminal 86 of said relay 6 connect the output terminal of said controller 5, terminal 85 ground connection, and normally-closed contact 30 is connected starting motor 3 and key enable switch 1 respectively with 87a.When driver's operation key enable switch 1, key enable switch 1 closure, electric thereby starting motor 3 gets, the output shaft of this starting motor 3 links to each other with the bent axle of motor machinery, drives the crankshaft rotating of motor, thus ato unit; After driver's hand left this key enable switch 1, key enable switch 1 can automatically reset, and this moment, starting motor 3 also can be thrown off and being connected of engine crankshaft because of outage.
The working principle of system that is used to protect starting motor of the utility model is described below in conjunction with Fig. 4.
The generator of engine drives is the equipment that power supply is provided and charges a battery to the complete machine electric elements, and the running of motor and generator is almost carried out simultaneously, and before and after generator ran well, obvious variation can take place the supply voltage of electrical system.With a certain special engineering machinery is example; It is before generator does not have work that motor does not have startup; System power supply voltage can not surpass 25.5V, and generator get into charge normal work after, system power supply voltage generally can not be lower than 27.5V; Thereby utilize this variation, just can know timely that motor is not activated.Therefore after as long as controller is judged the supply voltage of received electrical system and is higher than 27.5V; Just can confirm that motor has started; Controller this moment (PLC) output control signal, control relay breaks off the normally-closed contact of relay; Thereby can cut off being connected of starting motor and key enable switch automatically, also just avoid driver's misoperation key enable switch or key enable switch phenomenon that the engine cranking motor that causes damages that do not reset once more thus.
Among the different embodiments; The upper limit value and lower limit value of its system power supply change in voltage is different before and after the engine start of different classes of engineering mechanical device; As long as the CLV ceiling limit value of getting the voltage of system power supply behind the engine start is as the predeterminated voltage value in the controller; Virtual voltage and this predeterminated voltage value through the detection system power supply compare, if comparative result is that virtual voltage is higher than this predeterminated voltage value, can judge that motor starts.
Particularly, the voltage of voltage transducer 4 detection system power supply VCC, and send voltage signal to controller 5.Controller 5 judges that whether the voltage that detects is greater than predeterminated voltage value (the for example 27.5V in the present embodiment); If this voltage is greater than this predeterminated voltage value; Represent that promptly motor is in starting state; Then the normally-closed contact 30 of controller 5 control relays 6 breaks off with 87a, thereby starting motor 3 and system power supply VCC are broken off.Meanwhile, controller 5 has cut off being connected of starting motor 3 and key enable switch 1 through control relay 6, can prevent that starting motor 3 from starting once more.In this case; Because the normally-closed contact 30 and the 87a of relay 6 keep off state; Do not automatically reset starting motor 3 is turned round once more even if turn key enable switch 1 or key enable switch 1 once more, thereby avoided the damage of starting motor 3; If this voltage less than this predeterminated voltage value, representes that promptly motor is not activated, starting motor 3 normally receives 1 control of key enable switch, and the driver can according to circumstances open starting motor 3 through key enable switch 1, with ato unit.
Can find out from the foregoing description; Controller is judged the state (starting state or non-started state) of motor through receiving electrical system power source voltage signal; And when engine start, control the power supply that breaks off starting motor, can not be activated running once more with starting motor after guaranteeing engine start.Can avoid user misoperation key enable switch or key enable switch to break down and the phenomenon of the unusual damage starting motor that situation such as do not automatically reset causes; Thereby reduced user's construction risk and hazard rate, and had the advantage simple, convenient, reliable, that cost is low.
More than combine accompanying drawing to describe the preferred implementation of the utility model in detail; But; The utility model is not limited to the detail in the above-mentioned mode of execution; In the technical conceive scope of the utility model, can carry out multiple simple variant to the technological scheme of the utility model, these simple variant all belong to the protection domain of the utility model.
Need to prove that in addition each the concrete technical characteristics described in above-mentioned embodiment under reconcilable situation, can make up through any suitable manner.For fear of unnecessary repetition, the utility model is to the explanation no longer separately of various possible compound modes.
In addition, also can carry out combination in any between the various mode of execution of the utility model, as long as its thought without prejudice to the utility model, it should be regarded as content disclosed in the utility model equally.
Claims (6)
1. controller that is used to protect starting motor, this starting motor links to each other with system power supply, is used for ato unit, it is characterized in that, and this controller comprises:
Reception unit is used to receive the signal of the voltage of the said system power supply of representative; And
Treatment device is connected with said reception unit, breaks off being connected of said starting motor and said system power supply when being used for voltage in said system power supply greater than a predeterminated voltage value.
2. a system that is used to protect starting motor is characterized in that, this system comprises:
The controller that is used to protect starting motor according to claim 1; And
Voltage transducer is connected with said reception unit, is used to detect the voltage of said system power supply.
3. system according to claim 2 is characterized in that, this system also comprises:
Relay, this relay are connected between said starting motor and the said system power supply,
Wherein, said controller is electrically connected with this relay, when being used for voltage in said system power supply greater than this predeterminated voltage value, controlling this relay and breaks off.
4. system according to claim 3 is characterized in that, this system also comprises:
The key enable switch, said starting motor links to each other with said system power supply through this key enable switch, and said relay is connected between said key enable switch and the said starting motor.
5. an engineering mechanical device comprises starting motor and the motor that is connected with this starting motor, it is characterized in that this equipment also comprises any described system that is used to protect starting motor in the claim 2-4 item.
6. engineering mechanical device according to claim 5 is characterized in that, this project machinery is an excavator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220216893XU CN202560421U (en) | 2012-05-15 | 2012-05-15 | Controller, system and engineering mechanical device for protecting starting motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220216893XU CN202560421U (en) | 2012-05-15 | 2012-05-15 | Controller, system and engineering mechanical device for protecting starting motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202560421U true CN202560421U (en) | 2012-11-28 |
Family
ID=47210084
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220216893XU Expired - Fee Related CN202560421U (en) | 2012-05-15 | 2012-05-15 | Controller, system and engineering mechanical device for protecting starting motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202560421U (en) |
-
2012
- 2012-05-15 CN CN201220216893XU patent/CN202560421U/en not_active Expired - Fee Related
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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: 20121128 Termination date: 20180515 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |