CN101614025B - Emergency control circuit for construction machinery electronic monitoring systems - Google Patents
Emergency control circuit for construction machinery electronic monitoring systems Download PDFInfo
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- CN101614025B CN101614025B CN2009103047102A CN200910304710A CN101614025B CN 101614025 B CN101614025 B CN 101614025B CN 2009103047102 A CN2009103047102 A CN 2009103047102A CN 200910304710 A CN200910304710 A CN 200910304710A CN 101614025 B CN101614025 B CN 101614025B
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- engine throttle
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- 238000010276 construction Methods 0.000 title claims abstract description 8
- 238000012544 monitoring process Methods 0.000 title claims abstract description 7
- 238000000034 method Methods 0.000 claims description 5
- 230000002337 anti-port Effects 0.000 claims description 3
- 238000006243 chemical reaction Methods 0.000 abstract 1
- 238000011065 in-situ storage Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
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- Operation Control Of Excavators (AREA)
- Control Of Vehicle Engines Or Engines For Specific Uses (AREA)
Abstract
The invention discloses an emergency control circuit for construction machinery electronic monitoring systems, which comprises a proportional solenoid valve (1) which is connected with a main oil pump and is used to control the output of the main oil pump, a servo motor (2) which is connected with a pull rod of an engine throttle and is used to control the magnitude of the engine throttle, as well as a driver (3) which is connected with the proportional solenoid valve (1) and the servo motor (2) and is used to control every working system. The circuit can control the main oil pump and the engine throttle in time when an excavator driver breaks down so as to complete work needing to be completed without delay, and can withdraw from dangerous working environment in time so as to prevent accidents from causing casualties and machine loss. When the circuit works, if the driver breaks down, a machine operator can draw a work-mode conversion switch in situ to switch a control system from a normal mode to an emergency mode, and can control the magnitude of the engine throttle by drawing an inching switch so as to complete unfinished work and tasks.
Description
Technical field:
The present invention relates to a kind of control circuit of excavator, particularly a kind of emergency control circuit for construction machinery electronic monitoring systems.
Background technology:
At present, excavator plays more and more important role in our daily engineering construction.Generally speaking, it is all extremely being worked under the rugged environment, still works under breakneck condition sometimes, as rescue and relief work etc., this just requires excavator except being competent at its work, also extremely low fault rate will be arranged, and also wants and can in time handle even break down.And the major control parts driver control of present excavator the whole work system of excavator and the action of running gear, in case break down, excavator will be parked in the original place and cannot move, and so not only can delay the duration, but also can cause danger, cause serious consequence.
Summary of the invention:
The technical problem to be solved in the present invention is, a kind of emergency control circuit for construction machinery electronic monitoring systems is provided, and it can in time drive main oil pump when excavator proportion magnetic valve driver breaks down, make excavator can finish every work and task smoothly.
Technical scheme of the present invention: it comprises
Proportion magnetic valve is connected with main oil pump, is used to control main oil pump output;
It also comprises servomotor, is connected with the engine throttle pull bar, is used to control the engine throttle size; Driver connects proportion magnetic valve and servomotor, controls each work system; Also be connected with the working mode change switch between proportion magnetic valve and servomotor and proportion magnetic valve driver, the working mode change switch also is connected with the contingency mode control box, and the contingency mode control box connects point driving switch; The circuit of contingency mode control box is, when passing through point driving switch, when making line S4 ground connection, first relay gets electric, the first relay normally open contact closure, electric current passes through line S5 to servomotor by line S1 again to first relay, by line S6 process power resistor, the constant close contact ground connection of second relay forms the loop again, the running of motor forward drives accelerator rod and opens the throttle; When passing through manual point driving switch, when making line S3 ground connection, second relay gets, the second relay normally open contact closure, electric current to second relay, arrive line S6 to servomotor through power resistor by line S1 again, get back to the constant close contact ground connection of first relay again by line S5, form the loop, the motor antiport drives accelerator rod and reduces throttle.
The circuit of contingency mode control box is made up of power resistor, relay.
Owing to adopted emergency control circuit, the present invention can in time control main oil pump and engine throttle when the excavator driver breaks down, finish the work that need in time finish, and can in time withdraw from the working environment of danger, avoiding meeting accident causes casualties and machine loss.During work, if driver breaks down, the operating personnel of machine can pull the working mode change switch in position, and control system is switched to contingency mode by normal mode, and can control the size of engine throttle, thereby finish uncompleted work and task by pulling point driving switch.
Description of drawings:
Fig. 1 is a schematic diagram of the present invention;
Fig. 2 is emergency control circuit figure of the present invention.
The specific embodiment:
Embodiments of the invention: as Fig. 1, proportion magnetic valve 1 is connected with proportion magnetic valve driver 3 by KN1-402F working mode change 4 respectively with servomotor 2, during operate as normal, driver 3 gives proportion magnetic valve 1 electric current, thereby the output of control main oil pump, driver 3 makes servomotor 2 rotatings by giving servomotor 2 electric current forward or backwards, control engine throttle pull bar, and then the size of control engine output; When driver 3 breaks down, move KN1-402F working mode change 4, make proportion magnetic valve 1 obtain a fixed current; Servomotor 2 is connected with contingency mode control box 5, and manually KN1-223 point driving switch 6 just can make machine run well.
The circuit diagram of contingency mode control box 5 such as Fig. 2:
When passing through manual KN1-223 point driving switch 6, when making 122# line S4 ground connection, first relay 1 gets electric, first relay, 1 constant open contact closure, and electric current passes through 26# line S1 to first relay 1, process 120A# line S5 is to servomotor again, by 120# line S6 process power resistor, the constant close contact ground connection of crossing second relay 2 forms the loop again, the running of motor forward drives accelerator rod and opens the throttle.
When passing through manual KN1-223 point driving switch 6, when making 121# line S3 ground connection, second relay 2, second relay, 2 constant open contact closures, electric current to second relay 2, arrive 120# line S6 to servomotor through power resistor by 26# line S1 again, get back to the constant close contact ground connection of first relay 1 again by 120A# line S5, form the loop, the motor antiport drives accelerator rod and reduces throttle.
Claims (2)
1. emergency control circuit for construction machinery electronic monitoring systems, it comprises proportion magnetic valve (1), is connected with main oil pump, is used to control main oil pump output; It is characterized in that: it also comprises servomotor (2), is connected with the engine throttle pull bar, is used to control the engine throttle size; Driver (3) connects proportion magnetic valve (1) and servomotor (2), controls each work system; Between proportion magnetic valve (1) and servomotor (2) and driver (3), also be connected with working mode change switch (4), working mode change switch (4) also is connected with contingency mode control box (5), and contingency mode control box (5) connects point driving switch (6); The circuit of contingency mode control box (5) is, when passing through point driving switch (6), when making line S4 ground connection, first relay (1) gets, first relay (1) constant open contact closure, to first relay (1), process line S5 is to servomotor, again by line S6 process power resistor again by line S1 for electric current, cross the constant close contact ground connection of second relay (2), form the loop, the running of motor forward drives accelerator rod and opens the throttle; When passing through manual point driving switch (6), when making line S3 ground connection, second relay (2), second relay (2) constant open contact closure, electric current to second relay (2), arrive line S6 to servomotor through power resistor by line S1 again, get back to the constant close contact ground connection of first relay (1) again by line S5, form the loop, the motor antiport drives accelerator rod and reduces throttle.
2. emergency control circuit for construction machinery electronic monitoring systems according to claim 1 is characterized in that: the circuit of contingency mode control box (5) is made up of power resistor, relay.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009103047102A CN101614025B (en) | 2009-07-23 | 2009-07-23 | Emergency control circuit for construction machinery electronic monitoring systems |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009103047102A CN101614025B (en) | 2009-07-23 | 2009-07-23 | Emergency control circuit for construction machinery electronic monitoring systems |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101614025A CN101614025A (en) | 2009-12-30 |
| CN101614025B true CN101614025B (en) | 2011-06-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009103047102A Active CN101614025B (en) | 2009-07-23 | 2009-07-23 | Emergency control circuit for construction machinery electronic monitoring systems |
Country Status (1)
| Country | Link |
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| CN (1) | CN101614025B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1095339A (en) * | 1993-05-18 | 1994-11-23 | 陈若歆 | Intelligent protection system for safe running of motor vehicle |
| CN1361455A (en) * | 2000-12-27 | 2002-07-31 | 湘潭电气设备制造有限责任公司 | Fault display and protection controller for mine excavator |
| JP4010255B2 (en) * | 2003-02-07 | 2007-11-21 | コベルコ建機株式会社 | Construction machine control equipment |
| CN201180277Y (en) * | 2008-01-11 | 2009-01-14 | 合肥振宇工程机械有限责任公司 | Stage change operating mechanism of wheeled excavator |
-
2009
- 2009-07-23 CN CN2009103047102A patent/CN101614025B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1095339A (en) * | 1993-05-18 | 1994-11-23 | 陈若歆 | Intelligent protection system for safe running of motor vehicle |
| CN1361455A (en) * | 2000-12-27 | 2002-07-31 | 湘潭电气设备制造有限责任公司 | Fault display and protection controller for mine excavator |
| JP4010255B2 (en) * | 2003-02-07 | 2007-11-21 | コベルコ建機株式会社 | Construction machine control equipment |
| CN201180277Y (en) * | 2008-01-11 | 2009-01-14 | 合肥振宇工程机械有限责任公司 | Stage change operating mechanism of wheeled excavator |
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| Publication number | Publication date |
|---|---|
| CN101614025A (en) | 2009-12-30 |
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Address after: No. 249, Baiyun North Road, Baiyun District, Guiyang City, Guizhou Province Patentee after: Guiyang Yongqing Intelligent Control Technology Co.,Ltd. Address before: 550007 No. 43 Fenghuang Road, Tai Chee bridge, Guizhou, Guiyang Patentee before: GUIYANG YONGQING INSTRUMENTS & ELECTRONIC SCIENCEAND TECHNOLOGY Co.,Ltd. |
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