CN110001611A - A kind of electrohydraulic control system, method and the land leveller of parking braking and releasing - Google Patents
A kind of electrohydraulic control system, method and the land leveller of parking braking and releasing Download PDFInfo
- Publication number
- CN110001611A CN110001611A CN201910293201.8A CN201910293201A CN110001611A CN 110001611 A CN110001611 A CN 110001611A CN 201910293201 A CN201910293201 A CN 201910293201A CN 110001611 A CN110001611 A CN 110001611A
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- Prior art keywords
- parking
- valve
- braking
- hydraulic oil
- pump
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims description 10
- 239000010720 hydraulic oil Substances 0.000 claims abstract description 38
- 230000005520 electrodynamics Effects 0.000 claims abstract description 19
- 239000003921 oil Substances 0.000 claims description 19
- 239000007788 liquid Substances 0.000 claims description 8
- 238000005265 energy consumption Methods 0.000 abstract description 3
- 230000006872 improvement Effects 0.000 description 5
- 239000002828 fuel tank Substances 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000009849 deactivation Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000005662 electromechanics Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
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
- B60T13/10—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 fluid assistance, drive, or release
- B60T13/12—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 fluid assistance, drive, or release the fluid being liquid
-
- 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
- B60T13/10—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 fluid assistance, drive, or release
- B60T13/66—Electrical control in fluid-pressure brake systems
- B60T13/68—Electrical control in fluid-pressure brake systems by electrically-controlled valves
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Braking Systems And Boosters (AREA)
- Valves And Accessory Devices For Braking Systems (AREA)
Abstract
The present invention discloses the electrohydraulic control system of a kind of land leveller parking braking and releasing, including manual pump, gear pump, check valve I, parking control solenoid valve, shut-off valve, parking brake I, parking brake II, parking pressure switch, accumulator, overflow valve, check valve II, electrodynamic pump and hydraulic oil container；By the connection of each element, ultimately forms common parking braking and release electro-hydraulic control circuit, emergency parking braking and release electro-hydraulic control circuit and manual parking braking and release hydraulic circuit.The present invention provides three kinds of parking brakings and releasing scheme for land leveller, three kinds of schemes are successively orderly, cooperate, it is ensured that quickly, steadily and with lowest energy consumption realize parking braking and releasing, the parking braking of land leveller has been effectively ensured and has released performance, has been provided safeguard for complete machine and personal safety.
Description
Technical field
The present invention relates to the electrohydraulic control system of a kind of parking braking and releasing, method and land levellers, belong to level land electromechanics
Liquid control field.
Background technique
With the raising of human living standard, requirement of the machine hands to engineering machinery handling comfort is also higher and higher, passes
For system parking brake gradually replaced electronic parking, also there is electrohydraulic control system in the parking braking of land leveller and deactivation system,
Parking brake is mounted in headstock output end, controls parking braking and releasing by manipulation parking brake button.
Compared to traditional parking brake, most of electronic parking system improves a lot in terms of handling comfort, while complicated
Degree also greatly improves, and electrical and hydraulic system is needed to cooperate to realize, once element breaks down in circuit, it will it leads
Cause complete machine can not parking braking, or parking braking can not be released, not only will affect construction speed, it is also possible to jeopardize personal property peace
Entirely.
Summary of the invention
In view of the above existing problems in the prior art, the present invention provides the electrichydraulic control systems of a kind of parking braking and releasing
System, method and land leveller.
To achieve the goals above, the electrohydraulic control system of the present invention uses a kind of parking braking and releasing, including tooth
Wheel pump, check valve I, parking control solenoid valve, shut-off valve, parking brake I, parking brake II, parking pressure switch, accumulation of energy
Device, overflow valve and hydraulic oil container；
One end of the gear pump is connected with hydraulic oil container, and the other end is connected with check valve I, check valve I respectively with parking
Control solenoid valve, accumulator are connected with overflow valve, and the overflow valve is connected with hydraulic oil container, the parking control solenoid valve point
It is not connected with hydraulic oil container, shut-off valve, the shut-off valve and parking brake I, parking brake II and parking pressure switch phase
Even.
As an improvement, further including check valve II and electrodynamic pump；One end of the electrodynamic pump is connected with hydraulic oil container, the other end
It is connected with check valve II, the check valve II is connected with parking control solenoid valve, accumulator and overflow valve respectively.
As an improvement, further including manual pump；One end of the manual pump is connected with hydraulic oil container, the other end and shut-off valve,
Parking brake I is connected with parking brake II.
In addition, shutting down shape when complete machine is in the present invention also provides the electrohydraulic control method of a kind of parking braking and releasing
When state, parking brake I, parking brake II control solenoid valve by shut-off valve and parking and are connected with hydraulic oil container, parking
Parking braking is realized in brake I and the cooperation of parking brake II；
When needing complete machine to work, parking control solenoid valve obtain it is electric, gear pump output pressure oil by check valve I, stay
Vehicle control solenoid valve and shut-off valve enter parking brake I and parking brake II, and parking pressure switch is opened, parking braking solution
It removes；Wherein, section hydraulic oil is stored in accumulator, remaining oil liquid flows back to hydraulic oil container by overflow valve.
As an improvement, parking pressure switch is in normal when gear pump or when to gear pump providing the failure of apparatus of power
Closed state；
When parking control solenoid valve obtain it is electric, parking pressure switch and parking control solenoid valve fit through logic control, touch
It sends out electrodynamic pump to start to work, electrodynamic pump pressure oil output controls solenoid valve by check valve II, parking and shut-off valve enters parking
Brake I and parking brake II, parking pressure switch are opened, and parking braking releases, wherein a part of hydraulic oil can be stored in
In accumulator, remaining oil liquid flows back to hydraulic oil container by overflow valve.
As an improvement, providing the failure of apparatus of power, and complete machine no-voltage when gear pump or to gear pump, electrodynamic pump is not
When work, vehicle is in parking braking state；
It manually performs manual pump to close shut-off valve, provides pressure oil-source, the pressure oil of manual pump output by manual pump
It is directly entered parking brake I and parking brake II, parking pressure switch is opened, and parking braking releases.
Finally, the present invention also provides a kind of level lands of electrohydraulic control system for being equipped with the parking braking and releasing
Machine.
The present invention provides three kinds of parking brakings and releasing scheme for land leveller, and three kinds of schemes are successively orderly, cooperates,
Ensure quick, steady and parking braking and releasing are realized with lowest energy consumption, the parking braking and releasing of land leveller has been effectively ensured
Performance provides safeguard for complete machine and personal safety.
Detailed description of the invention
Fig. 1 is the principle of the present invention structural schematic diagram；
In figure: 1, manual pump, 2, gear pump, 3, check valve I, 4, parking control solenoid valve, 5, shut-off valve, 6, parking braking
Device I, 13, parking brake II, 7, parking pressure switch, 8, accumulator, 9, overflow valve, 10, check valve II, 11, electrodynamic pump,
12, hydraulic oil container.
Specific embodiment
In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention is carried out below further detailed
It describes in detail bright.However, it should be understood that the specific embodiments described herein are merely illustrative of the present invention, it is not limited to this hair
Bright range.
Unless otherwise defined, all technical terms and scientific terms used herein are led with technology of the invention is belonged to
The normally understood meaning of the technical staff in domain is identical, and term as used herein in the specification of the present invention is intended merely to retouch
State the purpose of specific embodiment, it is not intended that in the limitation present invention.
As shown in Figure 1, the electrohydraulic control system of a kind of parking braking and releasing, including manual pump 1, gear pump 2, check valve
I 3, parking control solenoid valve 4, shut-off valve 5, parking brake I 6, parking brake II 13, parking pressure switch 7, accumulator 8,
Overflow valve 9, check valve II 10, electrodynamic pump 11 and hydraulic oil container 12；
By the connection of each element, ultimately forms common parking braking and release electro-hydraulic control circuit, emergency parking
Braking and releasing electro-hydraulic control circuit and manual parking braking and releasing hydraulic circuit.
Wherein, the electro-hydraulic control circuit for commonly using parking braking and releasing includes gear pump 2, check valve I 3, parking control electricity
Magnet valve 4, shut-off valve 5, parking brake I 6, parking brake II 13, parking pressure switch 7, accumulator 8, overflow valve 9 and hydraulic
Fuel tank 12；
One end of the gear pump 2 is connected with hydraulic oil container 12, and the other end is connected with the A of check valve I 3 mouth, described unidirectional
The B mouth of valve I 3 is connected with the P mouth of the P mouth of parking control solenoid valve 4, accumulator 8, overflow valve 9 respectively, wherein the T of overflow valve 9
Mouth is connected with hydraulic oil container 12, and the T mouth of parking control solenoid valve 4 is connected with hydraulic oil container 12, and parking controls the A of solenoid valve 4
Mouth is connected with the X of shut-off valve 5 mouth, the Y mouth and parking brake I 6, parking brake II 13 and parking pressure switch 7 of shut-off valve 5
It is connected.
The electro-hydraulic control circuit of the emergency parking braking and releasing includes parking control solenoid valve 4, shut-off valve 5, parking
Brake I 6, parking brake II 13, parking pressure switch 7, accumulator 8, overflow valve 9, check valve II 10, electrodynamic pump 11 and liquid
Pressure oil case 12；
One end of the electrodynamic pump 11 is connected with hydraulic oil container 12, and the other end is connected with the A of check valve II 10 mouth, the list
It is connected respectively with the P mouth of the P mouth of parking control solenoid valve 4, accumulator 8, overflow valve 9 to the B mouth of valve II 10, wherein overflow valve
9 T mouth is connected with hydraulic oil container 12, and the T mouth of parking control solenoid valve 4 and A mouthfuls respectively with hydraulic oil container 12 and shut-off valve 5
X mouthfuls are connected, and the Y mouth of shut-off valve 5 is connected with parking brake I 6, parking brake II 13 and parking pressure switch 7.
The manual parking braking and releasing hydraulic circuit include manual pump 1, parking control solenoid valve 4, shut-off valve 5, stay
Vehicle brake I 6, parking brake II 13 and hydraulic oil container 12；
One end of the manual pump 1 is connected with hydraulic oil container 12, the Y mouth of the other end and shut-off valve 5, parking brake I 6 and
Parking brake II 13 is connected, and the X mouth of shut-off valve 5 is connected with the A mouth of parking control solenoid valve 4, and parking controls the T of solenoid valve 4
Mouth is connected with hydraulic oil container 12.
Wherein, whether the electrodynamic pump 11 works has been triggered jointly by parking control solenoid valve 4 and parking pressure switch 7
At.
The present invention also provides a kind of land levellers of electrohydraulic control system for being equipped with the parking braking and releasing.
The electrichydraulic control process of parking braking and releasing of the invention are as follows:
Land leveller is the parking braking and releasing that complete machine is realized by parking brake I 6 and parking brake II 13.
When complete machine is in shutdown status, the oil inlet of parking brake I 6 and parking brake II 13 passes through shut-off valve 5
It is connected with parking control solenoid valve 4 with hydraulic oil container 12, parking brake I 6 and parking brake II 13 pass through its included bullet
Friction plate locking is realized parking braking by spring；
When needing complete machine to work, execute electronic parking release order, parking control solenoid valve 4 electromagnet Y1 obtain it is electric,
The A mouth of parking control solenoid valve 4 is connected with P mouthfuls, and the pressure oil that gear pump 2 exports controls electromagnetism by check valve I 3, parking
Valve 4 and shut-off valve 5 enter parking brake I 6 and parking brake II 13, and brake inner spring is shunk, and friction plate is detached from, parking
Pressure switch 7 is opened, and parking braking releases, and vehicle can realize walking motion.Meanwhile a part of hydraulic oil can be stored in accumulator
In 8, remaining oil liquid flows back to hydraulic oil container 12 by overflow valve 9.
When gear pump 2 or when to gear pump 2 providing the failure of apparatus of power, gear pump 2 will no longer output pressure oil sources,
Or the oil pressure of certain numerical value cannot be established, at this point, parking pressure switch 7 is in normally off；
When the electromagnet Y1 of parking control solenoid valve 4 obtains electric, the two triggers the switch of electrodynamic pump 11 by logic control,
Make its start-up operation, the pressure oil that electrodynamic pump 11 exports controls solenoid valve 4 by check valve II 10, parking and shut-off valve 5 enters
Parking brake I 6 and parking brake II 13, brake inner spring are shunk, and friction plate is detached from, and parking pressure switch 7 is opened, and are stayed
Vehicle brake release, vehicle can realize walking motion.Meanwhile a part of hydraulic oil can be stored in accumulator 8, remaining oil liquid is logical
It crosses overflow valve 9 and flows back to fuel tank 12.
The failure of apparatus of power is provided when gear pump 2 or to gear pump 2, while when complete machine does not have voltage yet, electrodynamic pump
11 when can not also work, and vehicle can be in parking braking state.Need to manually perform 5 function of manual pump 1 and shut-off valve at this time, it will
Shut-off valve 5 is closed, and pressure oil-source is provided by manual pump 1, and the pressure oil that manual pump 1 exports is directly entered parking brake I 6
With parking brake II 13, brake inner spring is shunk, and friction plate is detached from, and parking pressure switch 7 is opened, and parking braking releases,
Vehicle can realize walking or trailer movement.
The present invention provides three kinds of parking brakings and releasing scheme for land leveller, and three kinds of schemes are successively orderly, cooperates,
Ensure quick, steady and parking braking and releasing are realized with lowest energy consumption, the parking braking and releasing of land leveller has been effectively ensured
Performance provides safeguard for complete machine and personal safety.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modification, equivalent replacement or improvement etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (7)
1. the electrohydraulic control system of a kind of parking braking and releasing, it is characterised in that: including gear pump (2), check valve I (3), stay
Vehicle controls solenoid valve (4), shut-off valve (5), parking brake I (6), parking brake II (13), parking pressure switch (7), stores
It can device (8), overflow valve (9) and hydraulic oil container (12)；
One end of the gear pump (2) is connected with hydraulic oil container (12), and the other end is connected with check valve I (3), the check valve I
(3) it is connected respectively with parking control solenoid valve (4), accumulator (8) and overflow valve (9), the overflow valve (9) and hydraulic oil container
(12) it is connected, parking control solenoid valve (4) is connected with hydraulic oil container (12), shut-off valve (5) respectively, the shut-off valve (5)
It is connected with parking brake I (6), parking brake II (13) and parking pressure switch (7).
2. the electrohydraulic control system of a kind of parking braking and releasing according to claim 1, it is characterised in that: further include list
To valve II (10) and electrodynamic pump (11)；One end of the electrodynamic pump (11) is connected with hydraulic oil container (12), the other end and check valve
II (10) are connected, and the check valve II (10) is connected with parking control solenoid valve (4), accumulator (8) and overflow valve (9) respectively
It connects.
3. the electrohydraulic control system of a kind of parking braking and releasing according to claim 1 or 2, which is characterized in that also wrap
Include manual pump (1)；One end of the manual pump (1) is connected with hydraulic oil container (12), the other end and shut-off valve (5), parking braking
Device I (6) is connected with parking brake II (13).
4. the electrohydraulic control method of a kind of parking braking and releasing, which is characterized in that when complete machine is in shutdown status, parking system
Dynamic device I (6), parking brake II (13) are connected by shut-off valve (5) and parking control solenoid valve (4) with hydraulic oil container (12)
Logical, parking braking is realized in parking brake I (6) and parking brake II (13) cooperation；
When needing complete machine to work, parking controls solenoid valve (4) must be electric, and the pressure oil of gear pump (2) output passes through check valve I
(3), parking control solenoid valve (4) and shut-off valve (5) enter parking brake I (6) and parking brake II (13), parking pressure
It switchs (7) to open, parking braking releases；Wherein, section hydraulic oil is stored in accumulator (8), remaining oil liquid passes through overflow
Valve (9) flows back to hydraulic oil container (12).
5. the electrohydraulic control method of a kind of parking braking and releasing according to claim 4, it is characterised in that: work as gear pump
(2) or to gear pump (2) when providing the failure of apparatus of power, parking pressure switch (7) is in normally off；
When parking control solenoid valve (4) must be electric, parking pressure switch (7) and parking control solenoid valve (4) fit through logic control
System, triggering electrodynamic pump (11) are started to work, and electrodynamic pump (11) pressure oil output controls solenoid valve by check valve II (10), parking
(4) and shut-off valve (5) enters parking brake I (6) and parking brake II (13), and parking pressure switch (7) is opened, parking system
It is dynamic to release, wherein a part of hydraulic oil can be stored in accumulator (8), remaining oil liquid flows back to hydraulic oil by overflow valve (9)
Case (12).
6. the electrohydraulic control method of a kind of parking braking and releasing according to claim 5, it is characterised in that: work as gear pump
(2) or to gear pump (2) failure of apparatus of power, and complete machine no-voltage are provided, when electrodynamic pump (11) does not work, vehicle is in
Parking braking state；It manually performs manual pump (1) to close shut-off valve (5), provides pressure oil-source by manual pump (1), manually
The pressure oil of pump (1) output is directly entered parking brake I (6) and parking brake II (13), and parking pressure switch (7) is beaten
It opens, parking braking releases.
7. a kind of land leveller for the electrohydraulic control system for being equipped with any one of claim 1-3 parking braking and releasing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910293201.8A CN110001611B (en) | 2019-04-12 | Electro-hydraulic control system and method for parking braking and releasing and grader |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910293201.8A CN110001611B (en) | 2019-04-12 | Electro-hydraulic control system and method for parking braking and releasing and grader |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110001611A true CN110001611A (en) | 2019-07-12 |
| CN110001611B CN110001611B (en) | 2024-07-16 |
Family
ID=
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3800097A1 (en) * | 2019-10-03 | 2021-04-07 | Slanzi Oleodinamica S.r.l. | Method, circuit, distributor and braking plant for towed vehicles |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001158342A (en) * | 1999-12-03 | 2001-06-12 | Hitachi Constr Mach Co Ltd | Working vehicle with negative parking brake |
| CN204140721U (en) * | 2014-08-08 | 2015-02-04 | 徐州五洋科技股份有限公司 | A kind of Belt Conveyors hydraulic control system based on disk type braker |
| CN107806484A (en) * | 2017-12-01 | 2018-03-16 | 江西工埠机械有限责任公司 | Brakes, control method and gate open and close device for permanent magnet direct-drive mechanism |
| CN109249918A (en) * | 2018-09-26 | 2019-01-22 | 三汽车制造有限公司 | Brake fluid system and vehicle |
| CN209757075U (en) * | 2019-04-12 | 2019-12-10 | 徐州徐工筑路机械有限公司 | electro-hydraulic control system for parking braking and releasing and land leveler provided with same |
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001158342A (en) * | 1999-12-03 | 2001-06-12 | Hitachi Constr Mach Co Ltd | Working vehicle with negative parking brake |
| CN204140721U (en) * | 2014-08-08 | 2015-02-04 | 徐州五洋科技股份有限公司 | A kind of Belt Conveyors hydraulic control system based on disk type braker |
| CN107806484A (en) * | 2017-12-01 | 2018-03-16 | 江西工埠机械有限责任公司 | Brakes, control method and gate open and close device for permanent magnet direct-drive mechanism |
| CN109249918A (en) * | 2018-09-26 | 2019-01-22 | 三汽车制造有限公司 | Brake fluid system and vehicle |
| CN209757075U (en) * | 2019-04-12 | 2019-12-10 | 徐州徐工筑路机械有限公司 | electro-hydraulic control system for parking braking and releasing and land leveler provided with same |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3800097A1 (en) * | 2019-10-03 | 2021-04-07 | Slanzi Oleodinamica S.r.l. | Method, circuit, distributor and braking plant for towed vehicles |
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