CN109809332A - A kind of brake system of forklift - Google Patents
A kind of brake system of forklift Download PDFInfo
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- CN109809332A CN109809332A CN201910110752.6A CN201910110752A CN109809332A CN 109809332 A CN109809332 A CN 109809332A CN 201910110752 A CN201910110752 A CN 201910110752A CN 109809332 A CN109809332 A CN 109809332A
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- brake
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- oil outlet
- valve
- pump
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- Valves And Accessory Devices For Braking Systems (AREA)
- Braking Systems And Boosters (AREA)
Abstract
The invention discloses a kind of brake system of forklift, including service brake pipeline, stopping brake pipeline and Parking braking release pipeline, the stopping brake pipeline includes brake pump and the parking brake that is connected to by pipeline with brake pump oil outlet；The service brake pipeline includes brake pump and the running brake that is connected to by pipeline with the oil outlet of brake pump；The Parking braking release pipeline includes brake pump and the parking brake that is connected to by pipeline with brake pump oil outlet, one-way conduction between the brake pump and the parking brake, the beneficial effects of the present invention are: the application passes through setting service brake pipeline, stopping brake pipeline and Parking braking release pipeline, Parking braking release under service brake, stopping brake and the state of emergency thus can be effectively provided for vehicle, and the application structure is simple, original braking system is changed smaller, thus at low cost, cost performance is high.
Description
Technical field
The present invention relates to technical field of forklift equipment, specifically a kind of brake system of forklift.
Background technique
Brake system of forklift is made of service brake and stopping brake two parts, and service braking device is the fork truck for making traveling
Slow down or stop, also known as foot brake；Stop device is to guarantee that vehicle reliably stops original place, also known as hand braking
Device.Running brake is generally seated in driving wheel；Parking brake has on gearbox, has in driving wheel.Driving
Braking and stopping brake have two sets of drive transmission device controls respectively, have hydraulic control also to have Mechanical course.Hydraulic control stops
Vehicle brake apparatus releases braking when power source works；When power source stops working, braking is implemented, when fork truck because failure is stopped
When in situ or on ramp, stopping brake can not be released, thus can not be the controlled movement of fork truck or slow descending.
Summary of the invention
The purpose of the present invention is to provide a kind of brake system of forklift, to solve the problems mentioned in the above background technology.
To achieve the above object, the invention provides the following technical scheme:
A kind of brake system of forklift, including service brake pipeline, stopping brake pipeline and Parking braking release pipeline, it is described
Stopping brake pipeline includes brake pump and the parking brake that is connected to by pipeline with brake pump oil outlet；The service brake
Pipeline includes brake pump and the running brake that is connected to by pipeline with the oil outlet of brake pump；The Parking braking release pipe
Road includes brake pump and the parking brake that is connected to by pipeline with brake pump oil outlet, the brake pump and parking system
One-way conduction between dynamic device, the service brake pipeline are not also turned on the stopping brake pipeline.
As a further solution of the present invention: the oil inlet of the brake pump is connected to fuel tank, the brake pump it is fuel-displaced
Mouth is connected with overflow valve, and the oil outlet of the overflow valve is connected to fuel tank.
As a further solution of the present invention: the vehicle brake piping, stopping brake pipeline and Parking braking release pipeline
Interior to be equipped with emergency button valve, the emergency button valve is two four-way hand-operated direction valves, and the emergency button valve includes oil inlet
D, oil inlet E, oil outlet F, oil outlet G.
As a further solution of the present invention: the emergency button valve is equipped with transposition mandril manually.
As a further solution of the present invention: when the emergency button valve is in commutation position the oil inlet E and it is described go out
Check valve is equipped between hydraulic fluid port F.
As a further solution of the present invention: the oil outlet F on the emergency button valve passes through the first tee tube and setting
Pass through the second tee tube in the oil outlet G in the parking brake connection on two side wheel sides, the emergency button valve and be set to
Running brake connection on two side wheel sides.
As a further solution of the present invention: the brake pump is set with the parking brake in the stopping brake pipeline
There is solenoid directional control valve, solenoid directional control valve is two-position three-way valve, and the solenoid directional control valve is equipped with oil inlet A, oil outlet B and fuel-displaced
Mouth C.
As a further solution of the present invention: the oil outlet rear end of the brake pump by pipeline and solenoid directional control valve into
Hydraulic fluid port A is connected to, and the oil outlet B on the solenoid directional control valve is connected to by pipeline with the oil inlet D on the emergency button valve.
As a further solution of the present invention: the oil outlet of the brake pump passes through on pipeline and the emergency button valve
Oil inlet E connection.
Compared with prior art, the beneficial effects of the present invention are: the application passes through setting service brake pipeline, stopping brake
Pipeline and Parking braking release pipeline, thus can service brake, stopping brake and the state of emergency effectively be provided for vehicle
Under Parking braking release, and the application structure is simple, changes smaller thus at low cost, sexual valence to original braking system
Than high.
Detailed description of the invention
Fig. 1 is brake system of forklift schematic diagram of the present invention.
In figure: 1- fuel tank, 2- oil pump, 3- overflow valve, 4- solenoid directional control valve, 5- emergency button valve, 6- running brake, 7-
Parking brake, 8- brake pump, the first tee tube of 9-, the second tee tube of 10-, 11- check valve, 12- replace mandril manually.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Referring to Fig. 1, in the embodiment of the present invention, a kind of brake system of forklift, including fuel tank 1, oil pump 2, overflow valve 3, electricity
Magnetic reversal valve 4, emergency button valve 5, running brake 6, parking brake 7, brake pump 8 pass through piping connection between each component
Three fluid pressure lines, respectively service brake pipeline, stopping brake pipeline and Parking braking release pipeline are formed, wherein electromagnetism changes
It is two-position three-way valve to valve 4, solenoid directional control valve 4 is equipped with oil inlet A, oil outlet B and oil outlet C, and emergency button valve 5 is two
Four-way hand-operated direction valve, the emergency button valve 5 include oil inlet D, oil inlet E, oil outlet F, oil outlet G；
Stopping brake pipeline includes sequentially connected fuel tank 1, oil pump 2, solenoid directional control valve 4, emergency button valve 5, parking system
The oil inlet of dynamic device 7, oil pump 2 be connected to by pipeline with fuel tank 1, the oil outlet of oil pump 2 pass through pipeline and solenoid directional control valve 4 into
Hydraulic fluid port A connection, while it being also connected with overflow valve 3 in the oil outlet of oil pump 2, the oil outlet of overflow valve 3 passes through pipeline and fuel tank
Connection, when solenoid directional control valve 4 is in commutation position, oil inlet A and oil outlet B are connected, when solenoid directional control valve 4 is at middle position, into
Hydraulic fluid port A is interrupted, and oil outlet B and oil outlet C are connected, and oil outlet C is connected to by pipeline with fuel tank 1, and oil outlet B passes through pipeline and answers
Oil inlet D on anxious switch valve 5 is connected, and at middle position, oil inlet D and oil outlet F are connected, and oil outlet F passes through the first tee tube 9
It is connected to the parking brake 7 being arranged on two side wheel sides, and then hydraulic oil can be pumped by parking brake by oil pump 2
In 7, with the stopping brake of freeing vehicle；
Service brake pipeline includes sequentially connected brake pump 8, emergency button valve 5 and running brake 6, brake pump 8
Oil outlet is connected to by pipeline with the oil inlet E of emergency button valve 5, and emergency button valve 5 is at middle position, oil inlet E and oil outlet G
Connection, oil outlet G are connected to by the second tee tube 10 with the running brake 6 being set on two side wheel sides, thus in the system of trampling
When dynamic pump 8, high pressure oil can be pumped into running brake 6, so that vehicle has stopping power during traveling；
Parking braking release pipeline includes sequentially connected brake pump 8, emergency button valve 5, parking brake 7, and emergency is opened
It closes valve 5 and is equipped with transposition mandril 12 manually, mandril 12 can be converted emergency button valve 5 to commutation by middle position by replacing manually
Furthermore position is equipped with check valve 11 in emergency button valve 5, when emergency button valve 5 is in commutation position, oil inlet E and oil outlet F
One-way conduction, thus trampling brake pump 8 at this time is that high pressure oil flows out from 8 oil outlet of brake pump and passes through pipeline to emergency button
Then the oil inlet E of valve 5 is entered in parking brake 7 by check valve 11, oil outlet F, and then can be stopped with freeing vehicle
Vehicle braking, so that vehicle still can be moved in failure or slow descending.
In the use of the present invention, when a vehicle is started, oil pump 2 is opened, solenoid directional control valve 4 electric must have middle position to be transformed into commutation
Position, emergency button valve are in middle position, and oil pump 2 exports high pressure oil at this time, and high pressure oil enters the oil inlet A of solenoid directional control valve 4, so
The oil inlet D on emergency button valve 5 is entered by oil outlet B afterwards, passes through the oil outlet F on emergency button valve 5, the first threeway
Pipe 9 enters in parking brake 7, and then completes the releasing of stopping brake, and vehicle can be moved, when vehicle is parked in,
Oil pump 2 is parked in work, and position state in 4 power interruption recovering of solenoid directional control valve, oil outlet B is connected to oil outlet C at this time, parking brake
High pressure oil in 7 passes through going out on the first tee tube 9, the oil outlet F on emergency button valve 5 and oil inlet D, solenoid directional control valve 4
Hydraulic fluid port B and oil outlet C are flow back into fuel tank 1, and then vehicle is made to restore stopping brake, when vehicle failure can not start,
Oil pump 2 and solenoid directional control valve 4 power off at this time, so that parking brake 7 is in on-position, if desired move vehicle, then need
The on-position of freeing vehicle is at this time converted emergency button valve 5 to changing by the manual transposition mandril 12 on emergency button valve 5
Xiang Wei, oil inlet E and oil outlet F one-way conduction, then trample brake pump 8 at this time, provide high pressure oil, high pressure by brake pump 8
Oil passes sequentially through oil inlet E, oil outlet F is entered in parking brake 7 so that vehicle release parking brake condition, so as into
Row movement, when needing to carry out parking braking again, it is only necessary to make position in the recovery of emergency button valve 5, at this time stopping brake
High pressure oil in device 7 passes through on the first tee tube 9, the oil outlet F on emergency button valve 5 and oil inlet D, solenoid directional control valve 4
Oil outlet B and oil outlet C are flow back into fuel tank 1, and then vehicle is made to restore stopping brake；
During vehicle driving, when being braked, brake pump 8 is trampled, high pressure is improved by brake pump 8
Oil, then high pressure oil enters two side wheel sides by oil inlet E on emergency button valve 5 and oil outlet G, the second tee tube 10
In running brake 6, and then service brake can be provided for vehicle.
It is obvious to a person skilled in the art that invention is not limited to the details of the above exemplary embodiments, Er Qie
In the case where without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is by appended power
Benefit requires rather than above description limits, it is intended that all by what is fallen within the meaning and scope of the equivalent elements of the claims
Variation is included within the present invention.Any reference signs in the claims should not be construed as limiting the involved claims.
In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped
Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should
It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
The other embodiments being understood that.
Claims (9)
1. a kind of brake system of forklift, which is characterized in that including service brake pipeline, stopping brake pipeline and Parking braking release
Pipeline, the stopping brake that the stopping brake pipeline includes brake pump (2) and is connected to brake pump (2) oil outlet by pipeline
Device (7)；The driving that the service brake pipeline includes brake pump (8) and is connected to the oil outlet of brake pump (8) by pipeline
Brake (6)；The Parking braking release pipeline includes brake pump (8) and is connected to by pipeline with brake pump (8) oil outlet
Parking brake (7), one-way conduction between the brake pump (8) and the parking brake (7), the service brake pipeline
It is not also turned on the stopping brake pipeline.
2. a kind of brake system of forklift according to claim 1, which is characterized in that the oil inlet of the brake pump (2) with
Fuel tank (1) connection, the oil outlet of the brake pump (2) are connected with overflow valve (3), the oil outlet and fuel tank of the overflow valve (3)
(1) it is connected to.
3. a kind of brake system of forklift according to claim 1, which is characterized in that the vehicle brake piping, stopping brake
Emergency button valve (5) are equipped in pipeline and Parking braking release pipeline, the emergency button valve (5) is two four-way manual reverse of direction
Valve, the emergency button valve (5) include oil inlet D, oil inlet E, oil outlet F, oil outlet G.
4. a kind of brake system of forklift according to claim 1, which is characterized in that the emergency button valve (5) is equipped with
Transposition mandril (12) manually.
5. a kind of brake system of forklift according to claim 1, which is characterized in that the emergency button valve (5) is in and changes
Check valve (11) are equipped between the oil inlet E and oil outlet F when to position.
6. a kind of brake system of forklift according to claim 3, which is characterized in that going out on the emergency button valve (5)
Hydraulic fluid port F is connected to by the first tee tube (9) with the parking brake (7) being set on two side wheel sides, the emergency button valve (5)
On oil outlet G be connected to the running brake (6) being set on two side wheel sides by the second tee tube (10).
7. a kind of brake system of forklift according to claim 3, which is characterized in that the system in the stopping brake pipeline
Dynamic pump (2) and the parking brake (7) are equipped with solenoid directional control valve (4), and solenoid directional control valve (4) is two-position three-way valve, the electricity
Magnetic reversal valve (4) is equipped with oil inlet A, oil outlet B and oil outlet C.
8. a kind of brake system of forklift according to claim 7, which is characterized in that after the oil outlet of the brake pump (2)
End be connected to by pipeline with the oil inlet A of solenoid directional control valve (4), the oil outlet B on the solenoid directional control valve (4) pass through pipeline and
Oil inlet D connection on the emergency button valve (5).
9. a kind of brake system of forklift according to claim 3, which is characterized in that the oil outlet of the brake pump (8) is logical
Piping is connected to the oil inlet E on the emergency button valve (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910110752.6A CN109809332B (en) | 2019-02-12 | 2019-02-12 | Fork truck braking system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910110752.6A CN109809332B (en) | 2019-02-12 | 2019-02-12 | Fork truck braking system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109809332A true CN109809332A (en) | 2019-05-28 |
| CN109809332B CN109809332B (en) | 2023-09-15 |
Family
ID=66606335
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910110752.6A Active CN109809332B (en) | 2019-02-12 | 2019-02-12 | Fork truck braking system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109809332B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110126800A (en) * | 2019-05-29 | 2019-08-16 | 安徽合力股份有限公司 | A kind of reversing control valve for truck electronic parking braking and unlocking function |
| CN112660090A (en) * | 2020-12-31 | 2021-04-16 | 三一汽车制造有限公司 | Emergency control system and electrically driven vehicle |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1410193A (en) * | 1972-04-14 | 1975-10-15 | Lancer Boss Ltd | Hydraulic control circuits |
| JPH0635067U (en) * | 1992-10-19 | 1994-05-10 | 株式会社豊田自動織機製作所 | forklift |
| DE102005025650A1 (en) * | 2005-06-03 | 2006-12-07 | Linde Ag | Industrial truck with hydraulically operated spring brake, connected to hydraulic steering system in case of failure |
| DE102008012708A1 (en) * | 2008-03-05 | 2009-09-10 | Linde Material Handling Gmbh | Work vehicle with parking brake |
| CN202624350U (en) * | 2012-04-05 | 2012-12-26 | 昆山晋桦豹胶轮车制造有限公司 | Control system for correcting vehicle head and removing brake by pumping oil through hand pump |
| JP2017211086A (en) * | 2016-05-24 | 2017-11-30 | ジーケイエヌ・オートモーティブ・リミテッド | System for activating parking brake |
| JP6299837B1 (en) * | 2016-10-20 | 2018-03-28 | マツダ株式会社 | Parking brake control device |
| CN108331791A (en) * | 2018-02-02 | 2018-07-27 | 安徽合力股份有限公司 | A kind of hydraulic system released without decompression valve type fork-lift truck stopping brake |
| CN109249918A (en) * | 2018-09-26 | 2019-01-22 | 三汽车制造有限公司 | Brake fluid system and vehicle |
| CN210176389U (en) * | 2019-02-12 | 2020-03-24 | 安徽合力股份有限公司 | Forklift braking system |
-
2019
- 2019-02-12 CN CN201910110752.6A patent/CN109809332B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1410193A (en) * | 1972-04-14 | 1975-10-15 | Lancer Boss Ltd | Hydraulic control circuits |
| JPH0635067U (en) * | 1992-10-19 | 1994-05-10 | 株式会社豊田自動織機製作所 | forklift |
| DE102005025650A1 (en) * | 2005-06-03 | 2006-12-07 | Linde Ag | Industrial truck with hydraulically operated spring brake, connected to hydraulic steering system in case of failure |
| DE102008012708A1 (en) * | 2008-03-05 | 2009-09-10 | Linde Material Handling Gmbh | Work vehicle with parking brake |
| CN202624350U (en) * | 2012-04-05 | 2012-12-26 | 昆山晋桦豹胶轮车制造有限公司 | Control system for correcting vehicle head and removing brake by pumping oil through hand pump |
| JP2017211086A (en) * | 2016-05-24 | 2017-11-30 | ジーケイエヌ・オートモーティブ・リミテッド | System for activating parking brake |
| JP6299837B1 (en) * | 2016-10-20 | 2018-03-28 | マツダ株式会社 | Parking brake control device |
| CN108331791A (en) * | 2018-02-02 | 2018-07-27 | 安徽合力股份有限公司 | A kind of hydraulic system released without decompression valve type fork-lift truck stopping brake |
| CN109249918A (en) * | 2018-09-26 | 2019-01-22 | 三汽车制造有限公司 | Brake fluid system and vehicle |
| CN210176389U (en) * | 2019-02-12 | 2020-03-24 | 安徽合力股份有限公司 | Forklift braking system |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110126800A (en) * | 2019-05-29 | 2019-08-16 | 安徽合力股份有限公司 | A kind of reversing control valve for truck electronic parking braking and unlocking function |
| CN110126800B (en) * | 2019-05-29 | 2024-07-12 | 安徽合力股份有限公司 | Reversing control valve for forklift electronic parking braking and unlocking functions |
| CN112660090A (en) * | 2020-12-31 | 2021-04-16 | 三一汽车制造有限公司 | Emergency control system and electrically driven vehicle |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109809332B (en) | 2023-09-15 |
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