CN107472230B - Hydraulic drive road roller braking system - Google Patents
Hydraulic drive road roller braking system Download PDFInfo
- Publication number
- CN107472230B CN107472230B CN201710728981.5A CN201710728981A CN107472230B CN 107472230 B CN107472230 B CN 107472230B CN 201710728981 A CN201710728981 A CN 201710728981A CN 107472230 B CN107472230 B CN 107472230B
- Authority
- CN
- China
- Prior art keywords
- switch
- brake
- relay
- rear wheel
- front wheel
- 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.)
- Active
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
- B60T13/74—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
- B60T13/745—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive acting on a hydraulic system, e.g. a master cylinder
Abstract
The invention discloses a hydraulic drive road roller braking system which comprises an emergency braking switch (1), a front wheel gear shifting switch (2), a handle neutral position detection switch (3), a rear wheel gear shifting switch (4), a brake detection switch (5), a parking braking switch (6), an engine ECU (7), a front wheel gear shifting relay (8), a rear wheel gear shifting relay (9), a foot braking relay (10), a front wheel gear shifting valve (11), a rear wheel gear shifting valve (12), a pump swashplate centering valve (13) and a braking valve (14). The hydraulic driving road roller braking system provided by the invention is provided with the secondary service braking, so that the service braking distance is reduced; the parking brake and the emergency brake are independently separated, and the function definition is clear; the emergency brake switch cuts off all output control signals of the whole machine.
Description
Technical Field
The invention relates to a braking system, in particular to a hydraulic driving road roller braking system.
Background
The road roller belongs to the field of compaction equipment in engineering machinery, and can be classified into mechanical driving, hydraulic driving and the like according to a driving principle. The driving brake in the existing hydraulic driving road roller brake device mainly comprises that after the driving brake returns to the middle through a handle, a driving pump does not output hydraulic oil, the road roller decelerates until stopping, when the road roller runs at a higher speed, the braking distance is long, the safety reliability is poor, the existing hydraulic driving road roller brake device commonly comprises an emergency brake and a parking brake which share one switch, the functions are defined in disorder, misoperation is easy to cause, the damage of a driving axle and a speed reducer is caused, the emergency brake switch is not thoroughly powered off, and the damage to road roller parts is easy to cause.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a hydraulic driving road roller braking system which can effectively reduce the road roller service braking distance and improve the service safety; furthermore, the parking brake and the emergency brake are independently separated, the function definition is clear, and misoperation is prevented; furthermore, the emergency brake switch is thoroughly powered off, and all output control signals of the whole machine can be cut off.
In order to solve the technical problems, the invention adopts the following technical scheme:
the utility model provides a hydraulic drive road roller braking system, includes emergency brake switch, emergency brake switch links to each other with front wheel shift switch, handle median position detection switch, rear wheel shift switch, brake detection switch and engine ECU respectively, front wheel shift switch and rear wheel shift switch link to each other with the 30 ends of front wheel shift relay and rear wheel shift relay respectively, front wheel shift relay and rear wheel shift relay link to each other with front wheel shift valve and rear wheel shift valve respectively, handle median position detection switch respectively with the 85 ends of front wheel shift relay and rear wheel shift relay link to each other, handle median position detection switch with engine ECU's 75 end links to each other, brake detection switch respectively with the 85 ends of foot brake relay with link to each other engine ECU's 55 ends link to each other, foot brake relay's 87a end links to each other with the swash plate pump return valve, foot brake relay's 30 ends link to each other with emergency brake switch.
The emergency brake switch and the parking brake switch are normally closed switches.
The front wheel gear shifting relay, the rear wheel gear shifting relay and the foot brake relay are normally closed relays.
The front wheel gear shifting switch, the handle middle position detection switch, the rear wheel gear shifting switch and the brake detection switch are normally open switches.
The emergency brake switch is externally connected with a 24V power supply and supplies power to the whole system.
The emergency brake switch is connected with the parking brake switch, and the parking brake switch is connected with the brake valve.
The beneficial effects of the invention are as follows:
first, be equipped with second grade service braking, each level service braking has reduced the braking distance greatly, has improved the service braking security of road roller greatly.
And the second, parking braking and emergency braking are independently separated, the function definition is clear, and the damage of a drive axle and a speed reducer caused by misoperation is prevented.
And thirdly, after emergency braking, the emergency flameout of the engine can be realized, all output control signals of the whole machine are cut off, parts of the road roller are effectively protected, and the braking safety and reliability of the road roller are greatly improved.
Drawings
FIG. 1 is a schematic illustration of the connection of a hydraulic driven roller brake system according to the present invention.
The reference numerals have the following meanings: 1. the emergency brake switch, 2, the front wheel gear shift switch, 3, the handle median detection switch, 4, the rear wheel gear shift switch, 5, the brake detection switch, 6, the parking brake switch, 7, the engine ECU,8, the front wheel gear shift relay, 9, the rear wheel gear shift relay, 10, the foot brake relay, 11, the front wheel gear shift valve, 12, the rear wheel gear shift valve, 13, the pump swash plate return valve, 14, the brake valve.
Detailed Description
The present invention will be further described with reference to the accompanying drawings, and the following examples are only for more clearly illustrating the technical aspects of the present invention, and are not to be construed as limiting the scope of the present invention.
As shown in fig. 1, a hydraulic-driven road roller braking system is composed of an emergency brake switch 1, a front wheel gear shift switch 2, a handle neutral position detection switch 3, a rear wheel gear shift switch 4, a brake detection switch 5, a parking brake switch 6, an engine ECU7 (ECU Electronic Control Unit: electronic control unit), a front wheel gear shift relay 8, a rear wheel gear shift relay 9, a foot brake relay 10, a front wheel gear shift valve 11, a rear wheel gear shift valve 12, a pump swash plate return valve 13 and a brake valve 14.
The emergency brake switch 1 is respectively connected with the front wheel gear shift switch 2, the handle neutral position detection switch 3, the rear wheel gear shift switch 4, the brake detection switch 5, the parking brake switch 6 and the engine ECU7, and the front wheel gear shift switch 2 and the rear wheel gear shift switch 4 are respectively connected with the ends 30 of the front wheel gear shift relay 8 and the rear wheel gear shift relay 9. The front wheel gear shift relay 8 and the rear wheel gear shift relay 9 are respectively connected with a front wheel gear shift valve 11 and a rear wheel gear shift valve 12, the handle neutral position detection switch 3 is respectively connected with the 85 ends of the front wheel gear shift relay 8 and the rear wheel gear shift relay 9, and the handle neutral position detection switch 3 is connected with the 75 end of the engine ECU 7. The brake detection switch 5 is connected with the 85 end of the foot brake relay 10 and the 55 end of the engine ECU7 respectively, and the 87a end of the foot brake relay 10 is connected with the pump swashplate centering valve 13. The 30 end of the foot brake relay 10 is connected with the emergency brake switch 1. The parking brake switch 6 is connected to a brake valve 14.
When the handle is operated to return to the middle, the road roller realizes first-stage service braking, the handle neutral position detection switch 3 is closed, no matter the front wheel gear shift switch 2 is closed or opened, the rear wheel gear shift switch 4 is closed or opened, the 85 ends of the front wheel gear shift relay 8 and the rear wheel gear shift relay 9 obtain electric signals of the handle neutral position detection switch 3, the 87a ends of the front wheel gear shift relay 8 and the rear wheel gear shift relay 9 cut off the power supply of the front wheel gear shift valve 11 and the rear wheel gear shift valve 12, the front wheel driving motor and the rear wheel driving motor are changed from small displacement to large displacement, meanwhile, the 75 ends of the engine ECU7 obtain the closing signals of the handle neutral position detection switch 3, the engine rotating speed is controlled to be reduced to a set idle value, the road roller is reduced to the set idle value due to the engine rotating speed in the first-stage service braking process, and the front wheel motor and the rear wheel motor are changed from small displacement to large displacement, so that the speed reducing slope of the road roller is increased in the shutdown process, and the service braking distance of the road roller is reduced.
When the foot brake is stepped on, the road roller realizes second-stage service braking, the brake detection switch 5 is closed, the 85 end of the foot brake relay 10 obtains an electric signal for closing the brake detection switch 5, the 87a end of the foot brake relay 10 cuts off the power supply of the pump swashplate centering valve 13, the pump swashplate centering valve cuts off the hydraulic power source, meanwhile, the 55 end of the engine ECU7 obtains a brake detection switch 5 closing signal to control the engine rotating speed to be reduced to a set idle value, when the first-stage service brake and the second-stage service brake are operated cooperatively, the service brake distance can be greatly reduced, the service brake safety reliability of the road roller is improved, the second-stage service brake can also be independently operated, and the operating handle is required to be centering in time after the service brake.
When the road roller is stopped on a slope or a flat road surface, the parking brake switch 6 is pressed, the power supply of the brake valve 14 is cut off, and the whole vehicle is braked and locked, so that the parking brake can be realized.
When the road roller encounters an emergency in the running process, the emergency brake switch 1 can be pressed down, and the whole brake system is powered off at the moment because the emergency brake switch 1 controls the total power supply of the brake system, so that the emergency braking of the whole vehicle can be realized, the emergency flameout of the engine can be controlled by pressing the emergency brake switch 1, all output control signals of the whole system are cut off, the safety of all parts of the whole vehicle is better protected, and the braking safety and reliability of the road roller are greatly improved.
The invention is equipped with the secondary service brake, greatly reduces the service brake distance, and the secondary service brake can be operated cooperatively and independently, thereby improving the service brake safety of the road roller. The parking brake and the emergency brake are separated independently, the function definition is clear, and the damage of a drive axle and a speed reducer caused by misoperation is prevented. After emergency braking operation, the engine can be emergently flamed out, all output control signals of the whole system are cut off, parts of the road roller are effectively protected, and the braking safety and reliability of the road roller are greatly improved.
The hydraulic driving road roller braking system has compact structure, convenient installation and reliable performance, and greatly improves the safety and reliability of the braking of the road roller.
The foregoing description is only of the preferred embodiments of the present invention, and is not intended to limit the scope of the invention, but rather is intended to cover any equivalents of the structures disclosed herein or modifications in equivalent processes, or any application, directly or indirectly, within the scope of the invention.
Claims (6)
1. A hydraulic drive roller braking system, characterized by: including emergency brake switch (1), emergency brake switch (1) link to each other with front wheel shift switch (2), handle median position detection switch (3), rear wheel shift switch (4), brake detection switch (5) and engine ECU (7) respectively, front wheel shift switch (2) and rear wheel shift switch (4) link to each other with the 30 ends of front wheel shift relay (8) and rear wheel shift relay (9) respectively, front wheel shift relay (8) and rear wheel shift relay (9) link to each other with front wheel shift valve (11) and rear wheel shift valve (12) respectively, handle median position detection switch (3) link to each other with the 85 ends of front wheel shift relay (8) and rear wheel shift relay (9) respectively, handle median position detection switch (3) link to each other with the 75 ends of engine ECU (7), brake detection switch (5) link to each other with the 85 ends of foot brake relay (10) and the brake foot end of linking to each other engine ECU (7) respectively, brake pedal relay (10) link to each other with the brake foot end (87), brake pump (10 a) link to each other with emergency brake valve (13).
2. A hydraulically driven roller braking system according to claim 1, wherein: the emergency brake switch (1) and the parking brake switch (6) are normally closed switches.
3. A hydraulically driven roller braking system according to claim 1, wherein: the front wheel gear shifting relay (8), the rear wheel gear shifting relay (9) and the foot brake relay (10) are normally closed relays.
4. A hydraulically driven roller braking system according to claim 1, wherein: the front wheel gear shift switch (2), the handle neutral position detection switch (3), the rear wheel gear shift switch (4) and the brake detection switch (5) are normally open switches.
5. A hydraulically driven roller braking system according to claim 1, wherein: the emergency brake switch (1) is externally connected with a 24V power supply to supply power to the whole system.
6. A hydraulically driven roller braking system according to claim 1, wherein: the emergency brake switch (1) is connected with the parking brake switch (6), and the parking brake switch (6) is connected with the brake valve (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710728981.5A CN107472230B (en) | 2017-08-23 | 2017-08-23 | Hydraulic drive road roller braking system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710728981.5A CN107472230B (en) | 2017-08-23 | 2017-08-23 | Hydraulic drive road roller braking system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107472230A CN107472230A (en) | 2017-12-15 |
| CN107472230B true CN107472230B (en) | 2023-07-07 |
Family
ID=60601171
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710728981.5A Active CN107472230B (en) | 2017-08-23 | 2017-08-23 | Hydraulic drive road roller braking system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107472230B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108425759B (en) * | 2018-03-30 | 2024-03-12 | 徐工集团工程机械股份有限公司 | Electric control device for engineering machinery and working method |
| CN114872670B (en) * | 2022-07-11 | 2022-11-04 | 东南大学 | Control method for self-adaptive adjustment of braking force of hydraulic braking road roller |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1152853A (en) * | 1965-12-25 | 1969-05-21 | Sumitomo Electric Ind Ltd 62 1 | Improvements in or relating to Emergency Braking Systems for Vehicles |
| US4641892A (en) * | 1984-12-12 | 1987-02-10 | Dsl Dynamic Sciences Limited | Railway emergency brake system |
| FR2773530B1 (en) * | 1998-01-12 | 2000-02-11 | Messier Bugatti | DEVICE FOR BRAKING AN AIRCRAFT WHEEL TRAIN |
| CN103661320B (en) * | 2013-12-05 | 2015-12-30 | 柳工无锡路面机械有限公司 | A kind of three grades of interlocking brake system of pneumatic tyred roller |
| CN204124120U (en) * | 2014-07-17 | 2015-01-28 | 山东临工工程机械有限公司 | The emergency brake system of full hydraulic drive roller |
| CN204279400U (en) * | 2014-11-18 | 2015-04-22 | 郑州日产汽车有限公司 | Automotive electronic parking system |
| CN207360300U (en) * | 2017-08-23 | 2018-05-15 | 徐工集团工程机械股份有限公司 | A kind of hydraulic driven road roller braking system |
-
2017
- 2017-08-23 CN CN201710728981.5A patent/CN107472230B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN107472230A (en) | 2017-12-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108626387B (en) | Automatic vehicle gear-selecting driving system and working method thereof | |
| CN104527628B (en) | Micro-motion function and hydraulic brake control system of wheeled dozer | |
| CN201415674Y (en) | Manual electrical-controlled parking and auxiliary starting control system for variable-speed automobile | |
| CN101537831A (en) | Control method of automobile electric control parking and start assisting by manual transmission and system thereof | |
| CN102442286A (en) | Energy regeneration device of drive-by-wire braking system and control method of braking system | |
| CN202491793U (en) | Drive-by-wire brake system energy regeneration device | |
| CN101332775A (en) | Hydraulic accumulation energy type autobus brake energy regeneration system | |
| CN107472230B (en) | Hydraulic drive road roller braking system | |
| CN203611976U (en) | Hydraulic travel emergency brake system for engineering machinery | |
| CN109649163B (en) | Vehicle traveling system, control method thereof and sanitation vehicle | |
| CN207360300U (en) | A kind of hydraulic driven road roller braking system | |
| CN201333921Y (en) | Four-wheel full drive hydraulic mixed power driving device for buses | |
| CN101708719B (en) | Braking system of tyre roller | |
| CN201520291U (en) | Safety device of braking system of automobile | |
| CN201566603U (en) | Braking system of tyre road roller | |
| CN103448569B (en) | Electric tractor | |
| CN2037704U (en) | Energy-accumulating braking oil-saving and electricity-saving device for vehicles | |
| CN103195840B (en) | Automatic clutch system | |
| CN201313415Y (en) | Braking control system of garbage compactor | |
| CN201333920Y (en) | Tandem drive hydraulic mixed power driving device for buses | |
| CN200981484Y (en) | Hydraulic pressure hybrid power cars | |
| CN114013416B (en) | Hydraulic combined brake control system for negative motor of bidirectional driving electric shovel car | |
| CN217347767U (en) | Electricelectric battery electric scooptram's electric liquid arrestment mechanism | |
| KR101887492B1 (en) | A method for actuating a brake light of a hydraulic driven working machine | |
| CN202508083U (en) | Automatic switching control system for braking oil way of engineering vehicle |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |