CN203559449U - Travelling and braking control system of grader - Google Patents
Travelling and braking control system of grader Download PDFInfo
- Publication number
- CN203559449U CN203559449U CN201320619014.2U CN201320619014U CN203559449U CN 203559449 U CN203559449 U CN 203559449U CN 201320619014 U CN201320619014 U CN 201320619014U CN 203559449 U CN203559449 U CN 203559449U
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- relay
- time delay
- control system
- directional valve
- gear selector
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Abstract
The utility model provides a travelling and braking control system of a grader. The travelling and braking control system comprises a power source, an electrically controlled gearbox, an energy accumulator, a braking hydraulic oil cylinder, a time-lapse pull-in relay, a time-lapse release relay, a relay and a gear selector, wherein the gear selector is connected with the time-lapse pull-in relay, so as to control the travelling state of the grader; the power source is connected with a two-position four-way electromagnetic directional valve, and the two-position four-way electromagnetic directional valve is connected with a pressure sensor; the energy accumulator is connected with a pressure measuring connector, a two-position three-way valve electromagnetic directional valve is connected with the braking hydraulic oil cylinder, the time-lapse release relay is connected with the two-position three-way valve electromagnetic directional valve, and the gear selector is connected with the grounding point of the electrically controlled gearbox through the time-lapse pull-in relay. The control system has the benefits that the technical scheme is adopted, so that a safe and steady switch between the travelling and the braking of the grader can be realized excellently; moreover, the control system has the advantages of simple structure, convenience in operation, less possibility of misoperation, high safe reliability and the like.
Description
Technical field
The utility model belongs to engineering mechanical device technical field, especially relates to a kind of land leveller walking and braking control system.
Background technology
In existing technology, land leveller is highway, railway, smooth and the ditching in the place such as dykes and dams and farmland, scrape slope, soil-shifting snow removing waits the visual plant of work, in walking and parking brake system therein, in walking and the mutual transfer process of stopping brake, often there will be brake valve open and close the time walk electromagnetic valve open and close sequencing can not get reasonable disposition, cause running gear and brakes reasonably not to run well, exist equipment to occur " top car ", the phenomenon such as " die of a sudden illness " occurs, affect the technical problems such as the work quality of land leveller and application life.
Summary of the invention
Problem to be solved in the utility model is to provide a kind of land leveller walking and braking control system, is especially applicable to land leveller walking and the control system of braking.
For solving the problems of the technologies described above, the technical solution adopted in the utility model is: a kind of land leveller walking and braking control system, comprise power source, electrically controlled gearbox, accumulator, brake fluid pressure oil cylinder, time delay attracting electric relay, time delay release relay, relay and gear selector, described gear selector is connected with time delay attracting electric relay, controls the walking states of land leveller; Described relay is connected with described two four-way electromagnetic reversing valves by pressure switch, and described power source is connected with two four-way electromagnetic reversing valves, and described two four-way electromagnetic reversing valves are connected with pressure sensor; Described pressure sensor is connected with one way valve, be connected with accumulator and two-bit triplet solenoid operated directional valve respectively again, described accumulator is connected with pressure measuring tie-in, described two-bit triplet solenoid operated directional valve is connected with described brake fluid pressure oil cylinder, described time delay release relay is connected with described two-bit triplet solenoid operated directional valve, described gear selector is connected with the earth point of electrically controlled gearbox by time delay attracting electric relay, controls the break-make of walking electromagnetic valve by controlling zero line.
Advantage and the good effect that the utlity model has are: owing to adopting technique scheme, can be good at realizing the switching of safety and steady between land leveller walking and braking, simple in structure, convenient operation, is not easy to cause maloperation, security reliability advantages of higher.
Accompanying drawing explanation
Fig. 1 is hydraulic diagram of the present utility model;
Fig. 2 is electrical structure schematic diagram of the present utility model.
In figure:
1, two four-way electromagnetic reversing valves 2, pressure sensor 3, one way valve
4, pressure measuring tie-in 5, accumulator 6, brake fluid pressure oil cylinder
7, two-bit triplet solenoid operated directional valve 8, power source 9, time delay attracting electric relay
10, time delay release relay 11, pressure switch
The specific embodiment
As illustrated in fig. 1 and 2, a kind of land leveller walking of the utility model and braking control system, comprise power source 8, electrically controlled gearbox, accumulator 5, brake fluid pressure oil cylinder 6, time delay attracting electric relay 9, time delay release relay 10, relay K A3 and gear selector, described gear selector is connected with time delay attracting electric relay 9, controls the walking states of land leveller; Described relay is connected with described two four-way electromagnetic reversing valves 1 by pressure switch, and described power source 8 is connected with two four-way electromagnetic reversing valves 1, and described two four-way electromagnetic reversing valves 1 are connected with pressure sensor 2; Described pressure sensor 2 with one way valve 3 by being connected, be connected with accumulator 5 and two-bit triplet solenoid operated directional valve 7 respectively again, described accumulator 5 is connected with pressure measuring tie-in 4, described two-bit triplet solenoid operated directional valve 7 is connected with described brake fluid pressure oil cylinder 6, described time delay release relay 10 is connected with described two-bit triplet solenoid operated directional valve 7, described gear selector is connected with the earth point of electrically controlled gearbox by time delay attracting electric relay, controls the break-make of walking electromagnetic valve by controlling zero line.
The course of work of this example: gear selector is connected with electrically controlled gearbox by time delay attracting electric relay 9, is equipped with pressure switch 11 on the pipeline that two four-way electromagnetic reversing valves 1 are connected with one way valve 3, and pressure switch 11 is connected with relay.Gear selector connects the KA1 that controls time delay attracting electric relay 9; Control electromagnetic valve M1, M2, M3, M4 connect time-delay relay; Time delay attracting electric relay 9 is connected with the zero line of electrically controlled gearbox, controls the break-make of walking electromagnetic valve by controlling zero line.
Land leveller is converted to the control of walking states by on-position.First by accumulator 5 electromagnetic valve YV1, accumulator 5 is rushed to liquid, when pressure reaches setting value, pressure switch 11 is moved, and control relay KA3 obtains electric, rushes liquid electromagnetic valve power-off, rushes liquid and completes; When land leveller is changed to walking states by on-position, the YV2 of stopping brake two-bit triplet electromagnetic valve reversal valve 7 obtains electric, brake fluid pressure oil cylinder 6 stretches out, stopping brake is removed, the KA1 of the attracting electric relay of time delay simultaneously 9 obtains electric, through certain hour time delay, walking electromagnetic valve obtains electric, thus realize land leveller safety and steady by on-position, be transformed into walking states.
Land leveller is converted to the control of on-position by walking states.When land leveller is changed to on-position by walking states, the KA1 power-off of time delay attracting electric relay 9, walk at once electromagnetic valve power-off, the KA2 of the release relay of time delay simultaneously 10 obtains electric, through certain hour time delay, the tensioning of the automatic retraction control land leveller brake hub by brake fluid pressure oil cylinder 6, thus realize land leveller safety and steady by walking states, be transformed into on-position.
Above an embodiment of the present utility model is had been described in detail, but described content is only preferred embodiment of the present utility model, can not be considered to for limiting practical range of the present utility model.All equalization variations of doing according to the utility model application range and improvement etc., within all should still belonging to patent covering scope of the present utility model.
Claims (1)
1. a land leveller is walked and braking control system, it is characterized in that: comprise power source, electrically controlled gearbox, accumulator, brake fluid pressure oil cylinder, time delay attracting electric relay, time delay release relay, relay and gear selector, described gear selector is connected with time delay attracting electric relay, controls the walking states of land leveller; Described relay is connected with described two four-way electromagnetic reversing valves by pressure switch, and described power source is connected with two four-way electromagnetic reversing valves, and described two four-way electromagnetic reversing valves are connected with pressure sensor; Described pressure sensor is connected with one way valve, be connected with accumulator and two-bit triplet solenoid operated directional valve respectively again, described accumulator is connected with pressure measuring tie-in, described two-bit triplet solenoid operated directional valve is connected with described brake fluid pressure oil cylinder, described time delay release relay is connected with described two-bit triplet solenoid operated directional valve, described gear selector is connected with the earth point of electrically controlled gearbox by time delay attracting electric relay, controls the break-make of walking electromagnetic valve by controlling zero line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320619014.2U CN203559449U (en) | 2013-09-29 | 2013-09-29 | Travelling and braking control system of grader |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320619014.2U CN203559449U (en) | 2013-09-29 | 2013-09-29 | Travelling and braking control system of grader |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203559449U true CN203559449U (en) | 2014-04-23 |
Family
ID=50509180
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320619014.2U Expired - Fee Related CN203559449U (en) | 2013-09-29 | 2013-09-29 | Travelling and braking control system of grader |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203559449U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105421522A (en) * | 2015-11-30 | 2016-03-23 | 中国北车集团沈阳机车车辆有限责任公司 | Start control device and excavator |
-
2013
- 2013-09-29 CN CN201320619014.2U patent/CN203559449U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105421522A (en) * | 2015-11-30 | 2016-03-23 | 中国北车集团沈阳机车车辆有限责任公司 | Start control device and 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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140423 Termination date: 20180929 |