CN203160105U - Automatic walking control system of load of milling machine - Google Patents
Automatic walking control system of load of milling machine Download PDFInfo
- Publication number
- CN203160105U CN203160105U CN 201320067730 CN201320067730U CN203160105U CN 203160105 U CN203160105 U CN 203160105U CN 201320067730 CN201320067730 CN 201320067730 CN 201320067730 U CN201320067730 U CN 201320067730U CN 203160105 U CN203160105 U CN 203160105U
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- control valve
- controller
- traveling pump
- displacement control
- walking
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Abstract
The utility model discloses an automatic walking control system of a load of a milling machine. The automatic control system comprises a walking pump, a rotary speed sensor, a controller, a walking pump displacement control valve, a working device and an engine flywheel, wherein the walking pump displacement control valve is connected with the walking pump; the rotary speed sensor is arranged in a manner of being adjacent to the engine flywheel and a signal wire of the rotary speed sensor is connected with the controller; and the controller is connected with the walking pump displacement control valve and an output flow of the walking pump is adjusted through adjusting the walking pump displacement control valve. The automatic control system disclosed by the utility model has the beneficial effects that a rotary speed of an engine is detected by the rotary speed sensor in real time and a signal is transmitted to the controller to be compared with a set program; then the output flow of the walking pump is adjusted through adjusting the walking pump displacement control valve; and finally, a walking speed is controlled in real time according to the change condition of the load, and the conditions that a milling cutter head is broken by the overload of the milling machine, an engine is overloaded and shut down, the vibration is aggravated due to the overload of a milling system and the like can be better avoided.
Description
Technical field
The utility model relates to maintenance of surface kind equipment technical field, particularly a kind of milling machine load walking automatic control system.
Background technology
Milling machine is the special equipment for maintenance of surface and road surface transformation, its operating principle is: equipment rotates continuously, ground surface material excision with certain depth, continuous walking by walking mechanism makes working angles to carry out continuously along direction of travel then, and by conveyer waste material constantly is transported on the dust car, thereby realize the continuous cutting of road pavement.
Because road structure is complicated, and it is very big to excise the required power in road surface, so the equipment of milling machine can bear very big shock loading.If shock loading is very big and the speed of travel corresponding the variation not, will causes that the transient load of equipment sharply raises, thereby cause the damage of milling cutter or transmission system to be destroyed, even cause the motor overburden phenomenon of stopping working.
It doesn't matter between traditional milling machine main transmission and the running gear, and the load variations that workpiece bears does not feed back to running gear.Can cause load sharply to increase when changing to than the hard pavement suddenly from softer road surface, if and road speed does not become, the vibrations of whole milling and planing system are sharply risen, the milling stability decreases, cause a lot of above-mentioned some that can predict with generation unpredictable failure conditions.
Therefore, necessary existing milling machine is improved, with interrelated between milling machine main transmission and the running gear, adjust automatically at road conditions in real time, improve the stability of milling machine work.
The utility model content
Goal of the invention of the present utility model is: at the problem of above-mentioned existence, provide that a kind of principle is simple, with low cost, reliability is high, the tangible milling machine load walking of construction effect automatic control system.
The technical solution adopted in the utility model is such: a kind of milling machine load walking automatic control system comprises traveling pump, speed probe, controller, traveling pump displacement control valve, equipment and engine flywheel; Described traveling pump displacement control valve is connected with traveling pump; The rotating speed of engine flywheel can fluctuate because of the load condition of equipment; Described speed probe is connected to controller near engine flywheel setting and its holding wire; Controller is connected to the traveling pump displacement control valve, adjusts the output flow of traveling pump displacement control valve and then adjustment traveling pump according to the feedback signal of speed probe.
As preferably, described traveling pump displacement control valve is a proportional control electromagnetic valve, changes the speed of travel thereby change the walking pump delivery according to the instruction of controller.
In sum, owing to adopted technique scheme, the beneficial effects of the utility model are: by speed probe is set, detect the variation of engine speed in real time, thereby know the situation of change of load indirectly, and pass the signal to controller and setting program is compared, thereby send one more reasonably speed of travel control signal adjust the output flow of traveling pump for the traveling pump displacement control valve, finally be achieved and control the speed of travel according to the situation of change of load in real time; The generation of situation such as can avoid well that milling machine brings because crossing that the milling cutter head is interrupted, engine stalling, milling and planing system vibrate aggravation because of overload has improved the integral construction stability of milling machine effectively.
Description of drawings
Fig. 1 is principle schematic of the present utility model.
Mark among the figure: 1 is traveling pump, and 2 is speed probe, and 3 is controller, and 4 is the traveling pump displacement control valve, and 5 is equipment, and 6 is engine flywheel.
The specific embodiment
Below in conjunction with accompanying drawing, the utility model is done detailed explanation.
Embodiment: as shown in Figure 1, a kind of milling machine load walking automatic control system comprises traveling pump 1, also comprises speed probe 2, controller 3, traveling pump displacement control valve 4, equipment 5 and engine flywheel 6; Described traveling pump displacement control valve 4 is connected with traveling pump 1; The rotating speed of engine flywheel 6 can fluctuate because of the load condition of equipment 5; Described speed probe 2 arranges near engine flywheel 6 and its holding wire is connected to controller 3; Controller 3 is connected to traveling pump displacement control valve 4, adjusts the output flow of traveling pump displacement control valve 4 and then adjustment traveling pump 1 according to the feedback signal of speed probe 2.
Described traveling pump displacement control valve 4 is a proportional control electromagnetic valve, thereby changes the discharge capacity change speed of travel of traveling pump 1 according to the instruction of controller 3.
When the load of equipment 5 has when becoming big according to road surface situation or tool wear situation, engine output torque increases, and according to the rotating speed torque curve of motor, the rotating speed of motor can reduce accordingly, to export enough big moment of torsion; At this moment speed probe 2 can detect the decline of engine speed and convey to controller 3 with the form of electric current.
The utility model can effectively be avoided having improved the integral construction stability of milling machine effectively because overload makes that the milling cutter head is interrupted, engine stalling, whole milling and planing system shake faults such as aggravation because of overload, has saved a large amount of maintenance costs.
The above only is preferred embodiment of the present utility model; not in order to limit the utility model; all any modifications 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 protection domain of the present utility model.
Claims (2)
1. a milling machine load walking automatic control system comprises traveling pump (1), it is characterized in that: also comprise speed probe (2), controller (3), traveling pump displacement control valve (4), equipment (5) and engine flywheel (6); Described traveling pump displacement control valve (4) is connected with traveling pump (1); The rotating speed of engine flywheel (6) can fluctuate because of the load condition of equipment (5); Described speed probe (2) arranges near engine flywheel (6) and its holding wire is connected to controller (3); Controller (3) is connected to traveling pump displacement control valve (4), adjusts the output flow of traveling pump displacement control valve (4) and then adjustment traveling pump (1) according to the feedback signal of speed probe (2).
2. a kind of milling machine load walking automatic control system according to claim 1, it is characterized in that: described traveling pump displacement control valve (4) is a proportional control electromagnetic valve, according to the instruction of controller (3) change traveling pump (1) thus discharge capacity change the speed of travel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320067730 CN203160105U (en) | 2013-02-06 | 2013-02-06 | Automatic walking control system of load of milling machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320067730 CN203160105U (en) | 2013-02-06 | 2013-02-06 | Automatic walking control system of load of milling machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203160105U true CN203160105U (en) | 2013-08-28 |
Family
ID=49021301
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320067730 Expired - Fee Related CN203160105U (en) | 2013-02-06 | 2013-02-06 | Automatic walking control system of load of milling machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203160105U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103541297A (en) * | 2013-10-09 | 2014-01-29 | 镇江市高等专科学校 | Milling and planning tool fault detection and protection device of pavement milling machine |
| CN106284179A (en) * | 2016-08-31 | 2017-01-04 | 江苏天嘉车辆技术有限公司 | Round brush rotating speed following control system based on snow sweeper operating rate and control method thereof |
| CN111676785A (en) * | 2020-07-03 | 2020-09-18 | 三一汽车制造有限公司 | Material conveying control method of milling machine, material conveying control system of milling machine and milling machine |
| WO2024082456A1 (en) * | 2022-10-21 | 2024-04-25 | 湖南三一中益机械有限公司 | Pavement milling machine driving control method, driving control system, and pavement milling machine |
-
2013
- 2013-02-06 CN CN 201320067730 patent/CN203160105U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103541297A (en) * | 2013-10-09 | 2014-01-29 | 镇江市高等专科学校 | Milling and planning tool fault detection and protection device of pavement milling machine |
| CN106284179A (en) * | 2016-08-31 | 2017-01-04 | 江苏天嘉车辆技术有限公司 | Round brush rotating speed following control system based on snow sweeper operating rate and control method thereof |
| CN111676785A (en) * | 2020-07-03 | 2020-09-18 | 三一汽车制造有限公司 | Material conveying control method of milling machine, material conveying control system of milling machine and milling machine |
| WO2024082456A1 (en) * | 2022-10-21 | 2024-04-25 | 湖南三一中益机械有限公司 | Pavement milling machine driving control method, driving control system, and pavement milling machine |
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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: 20130828 Termination date: 20180206 |