CN203795504U - Hydraulic excavator emergency control system and excavator - Google Patents
Hydraulic excavator emergency control system and excavator Download PDFInfo
- Publication number
- CN203795504U CN203795504U CN201420074281.0U CN201420074281U CN203795504U CN 203795504 U CN203795504 U CN 203795504U CN 201420074281 U CN201420074281 U CN 201420074281U CN 203795504 U CN203795504 U CN 203795504U
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- CN
- China
- Prior art keywords
- control system
- ecu
- accelerator
- hydraulic crawler
- crawler excavator
- 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.)
- Expired - Fee Related
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- Operation Control Of Excavators (AREA)
Abstract
The utility model discloses a hydraulic excavator emergency control system which comprises an ECU, an accelerator rotary knob, an accelerator motor and a pump power proportional electromagnetic valve. The accelerator rotary knob outputs an accelerator position adjusting signal to the ECU, the ECU outputs a driving signal to the pump power proportional electromagnetic valve and the accelerator motor, the accelerator motor outputs an accelerator motor position feedback signal to the ECU, the emergency control system is further provided with a monitor unit, and the monitor unit outputs an accelerator motor bracing wire stretching signal to the ECU. By means of the hydraulic excavator emergency control system, when position feedback units of part of modules of the ECU, the accelerator rotary knob and the accelerator motor break down, emergency redundant power control over the hydraulic excavator can be achieved, and the reliability and the using safety of excavator power control are improved on the premise that no accessory cost is increased; meanwhile, losses, caused by the fact that a maintaining person cannot arrive in time, of a client are reduced. The utility model further provides the excavator which comprises the hydraulic excavator emergency control system.
Description
Technical field
The utility model relates to the emergent control system of a kind of hydraulic crawler excavator and excavator.
Background technology
Hydraulic crawler excavator is a kind of earth and rock works machinery of extensive use, and the tachometer power control of excavator realizes by ECU (electronic control unit) under normal circumstances.ECU, by reading the given signal of grip and the position feed back signal of throttle motor is determined motor position, completes the control to engine speed.The power control of hydraulic crawler excavator is the given size of current of determining main pump taking engine speed as basis.
Because the operating mode of hydraulic crawler excavator is conventionally more severe, its control principle complexity in addition, thereby device failure and line failure rate are high compared with other engineering goods.Once the position feedback unit of ECU part of module, grip and throttle motor breaks down, and certainly will affect use, brings unnecessary economic loss to user.And current hydraulic crawler excavator is without emergent control system, in the time breaking down, can only waiting repair, cannot proceed operation.
Utility model content
The utility model is realized when a kind of position feedback unit when hydraulic crawler excavator ECU part of module, grip and throttle motor is broken down, and can assist the emergent system of controlling.
The utility model discloses the emergent control system of hydraulic crawler excavator, comprise ECU, grip, throttle motor and pump power proportion magnetic valve, described grip output throttle position conditioning signal is to ECU, described ECU output drive signal is to pump power proportion magnetic valve and throttle motor, described throttle motor output throttle motor position feedback signal is to ECU, emergent control system is also provided with watch-dog, and the described flexible signal of watch-dog output throttle motor bracing wire is to ECU.
A kind of excavator, comprises the emergent control system of described hydraulic crawler excavator.
The emergent control system of the utility model hydraulic crawler excavator can break down in the position feedback unit of ECU part of module, grip and throttle motor and realize the emergent redundant power control to hydraulic crawler excavator, thereby do not increasing under the prerequisite of any annex cost, improve the reliability of excavator power control and the safety of use, also reduced maintenance personal and can not arrive in time the loss causing to client simultaneously.
Brief description of the drawings
Fig. 1 is the emergent control system structured flowchart of hydraulic crawler excavator;
1, ECU; 2, grip; 3, throttle motor; 4, pump power proportion magnetic valve; 5, watch-dog.
Detailed description of the invention
Known referring to Fig. 1, the emergent control system of hydraulic crawler excavator comprises ECU1, grip 2, throttle motor 3, pump power proportion magnetic valve 4 and watch-dog 5.ECU1 is connected with grip 2, and throttle position conditioning signal is input to ECU1 by grip 2; The motor of ECU1 drives stitch CN1, CN2 to be connected with throttle motor 3 drive coil L ends, R end, thereby throttle motor 3 is turned to and controlled, the W end of throttle motor 3, Y end, G end are connected with ECU1 rotating speed pin, thereby throttle motor 3 rotating speeds are controlled, ECU1 output drive signal is to throttle motor 3, and its position feed back signal is input to ECU1 by throttle motor 3; ECU1 is connected with the power proportions electromagnetic valve 4 of pump, and output drive signal drives ratio electromagnetic valve coil; Watch-dog 5 is connected with ECU1 by high position data line (CAN-H), low data line (CAN-L), and the output control signal of watch-dog 5 is delivered to ECU1.By this connected mode, can realize the function of manual handling equipment under emergency, do not increase any annex, and improved the reliability of excavator power control and the safety of use.
In the time of system fault-free, be that user finds that operating system is in normal operating conditions, do not need to start the emergent redundancy control capability of watch-dog 5 by password, the throttle position feedback signal of the throttle position conditioning signal that ECU1 inputs by collection grip 2 and the input of throttle motor 3Y end, determine the position of throttle motor 3, realize the control to engine speed, thereby realize, the given electric current of pump power proportion magnetic valve 4 is regulated, complete the power match of hydraulic excavating pump and motor.
When system breaks down, be that user finds that operating system is malfunctioning, it is grip 2, the W end of throttle motor 3, Y end, G end breaks down, watch-dog 5 is provided with two buttons for controlling emergency system switch, can be defined as button F1, F2, be respectively used to control the open/close states of monitoring system, and two flexible buttons of control throttle motor 3 bracing wires, can be defined as F3, F4, be respectively used to control the rotation direction of throttle motor bracing wire, now open watch-dog 5, utilize button F3, F4 controls the flexible of throttle motor 3 bracing wires, in addition, ECU1 can be to the current value under 4 one standard operation patterns of pump power proportion magnetic valve under this pattern, to avoid the too low too low situation of machine operating efficiency that causes of pump power to occur.For avoiding the unexpected watch-dog 5 of opening, cause system control confusion, watch-dog 5 is provided with the code keypad of opening for emergency system, can enter by password like this contingency mode interface of watch-dog 5, avoid opening watch-dog 5 in the time of system fault-free, avoid the phenomenon of maloperation to occur.Outer can also the setting of this external code keypad renovated, and can avoid unexpected touching and causes opening the emergent control system of hydraulic crawler excavator.
A kind of excavator, read the given signal of grip 2 and the position feed back signal of throttle motor 3 is determined motor position by ECU1, complete the control to engine speed, reliable for guaranteeing its working stability, watch-dog 5 is installed on ECU1, form the emergent control system of above-mentioned hydraulic crawler excavator, thereby in the time breaking down, can start watch-dog 5 and carry out emergency processing.
Claims (8)
1. the emergent control system of hydraulic crawler excavator, comprise ECU (1), grip (2), throttle motor (3) and pump power proportion magnetic valve (4), described grip (2) output throttle position conditioning signal is to ECU (1), described ECU (1) output drive signal is to pump power proportion magnetic valve (4) and throttle motor (3), described throttle motor (3) output throttle motor position feedback signal is to ECU (1), it is characterized in that: emergent control system is also provided with watch-dog (5), the described flexible signal of watch-dog (5) output throttle motor (3) bracing wire is to ECU (1).
2. the emergent control system of hydraulic crawler excavator according to claim 1, is characterized in that: described watch-dog (5) is connected with ECU (1) with low data line by high position data line respectively.
3. the emergent control system of hydraulic crawler excavator according to claim 1 and 2, is characterized in that: described ECU(1) drive stitch to be connected with throttle motor (3) drive coil by motor, be connected with throttle motor (3) adjustable side by rotating speed pin.
4. the emergent control system of hydraulic crawler excavator according to claim 3, is characterized in that: described watch-dog (5) is provided with switch key and bracing wire telescopic key.
5. the emergent control system of hydraulic crawler excavator according to claim 4, is characterized in that: said switch key and bracing wire telescopic key are equipped with two.
6. according to the emergent control system of the hydraulic crawler excavator described in claim 4 or 5, it is characterized in that: described watch-dog (5) is provided with code keypad.
7. the emergent control system of hydraulic crawler excavator according to claim 6, is characterized in that: described code keypad is provided with and renovates outward.
8. an excavator, is characterized in that: comprise the emergent control system of the arbitrary described hydraulic crawler excavator of claim 1-7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420074281.0U CN203795504U (en) | 2014-02-20 | 2014-02-20 | Hydraulic excavator emergency control system and excavator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420074281.0U CN203795504U (en) | 2014-02-20 | 2014-02-20 | Hydraulic excavator emergency control system and excavator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203795504U true CN203795504U (en) | 2014-08-27 |
Family
ID=51377733
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420074281.0U Expired - Fee Related CN203795504U (en) | 2014-02-20 | 2014-02-20 | Hydraulic excavator emergency control system and excavator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203795504U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104405002A (en) * | 2014-10-10 | 2015-03-11 | 龙工（上海）挖掘机制造有限公司 | Control device and method for improving working efficiency of hydraulic excavator |
-
2014
- 2014-02-20 CN CN201420074281.0U patent/CN203795504U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104405002A (en) * | 2014-10-10 | 2015-03-11 | 龙工（上海）挖掘机制造有限公司 | Control device and method for improving working efficiency of hydraulic excavator |
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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: 20140827 Termination date: 20170220 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |