CN108313039A - Side-dump loader power cut braking system - Google Patents
Side-dump loader power cut braking system Download PDFInfo
- Publication number
- CN108313039A CN108313039A CN201810133899.2A CN201810133899A CN108313039A CN 108313039 A CN108313039 A CN 108313039A CN 201810133899 A CN201810133899 A CN 201810133899A CN 108313039 A CN108313039 A CN 108313039A
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- China
- Prior art keywords
- valve
- fast
- power cut
- fast charge
- air accumulator
- Prior art date
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- Granted
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- 239000004519 grease Substances 0.000 claims abstract description 12
- 210000000080 chela (arthropods) Anatomy 0.000 claims 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000013590 bulk material Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Classifications
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- 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
- B60T13/24—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 gaseous
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K17/00—Arrangement or mounting of transmissions in vehicles
- B60K17/04—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing
Landscapes
- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Braking Systems And Boosters (AREA)
Abstract
The invention discloses a kind of side-dump loader power cut braking systems, belong to braking system of engineering machinery field.It includes caliper, booster pump, pedal brake valve, air accumulator, safety valve, grease combination seperating vale, air compressor machine, switch valve and speed change operating valve, caliper, booster pump, pedal brake valve, air accumulator, grease combination seperating vale, air compressor machine are sequentially connected in series by pipeline, it further include fast charge fast-discharge valve, fast charge fast-discharge valve air inlet A is connected on the outlet pipe of the air accumulator, fast charge fast-discharge valve gas outlet B connection speed change operating valves, the gas outlet connecting valve valve of the pedal brake valve, and pass through the control mouth C of switch valve connection fast charge fast-discharge valve.The present invention solves the problems, such as that gear combines slow when power cut is slow when braking and power combines, and improves braking ability and the working efficiency of complete machine.
Description
Technical field
The invention belongs to a kind of braking systems, specifically, more particularly to a kind of side-dump loader braked with power cut
System.
Background technology
Loading machine is the important mechanical equipment in engineering machinery construction, is mainly used for the shovel to bulk material, dress, fortune, digging
Equal operations.Side-dump loader is to increase the function of Side discharge on the basis of common loading machine, and it is limited to be mainly used for place
Working environment, it is open-minded such as tunnel, since tunnel is narrow, the Working mould for advancing or retreating only is allowed inside tunnel
Formula clears out the material inside tunnel by Side discharge.It is relatively high to the requirement braked and lifted from the point of view of working cycles,
Stopping power can guarantee that complete machine is accurately parked in discharge port position, and lifting speed can guarantee the efficient work of complete machine, be currently
It is the power for cutting off engine to gearbox by power cut, to reduce the required braking moment of braking, reduces braking
Distance, and engine power is all supplied to hydraulic system, improve lifting speed.
The operating mode of current power cut is：Braking pressure is exported by brake pedal to control speed change valve into action
Power is cut off, and with the increase of brake pedal output pressure, when stepping on brake pedal, pedal brake valve output gas is divided into two
The braking that booster pump completes vehicle by caliper is arrived on road all the way, and another way is by switch valve to speed change operating valve, when pressure reaches
To the power cut spool for pushing speed change valve when certain value, the gear shift oil sources to gearbox has been cut off, gearbox is made to be in sky
Shelves, that is, cut off the power that engine is transmitted to gearbox, when loosening the brake, from pedal brake valve to booster pump
Gas and the gas from pedal brake valve to speed change valve are discharged from the exhaust outlet of pedal brake valve simultaneously, and braking pressure starts to drop
Low, when being reduced to 0.45MPa, power starts to combine, and until brake pedal is totally released, power cut releases, and power is extensive
It is multiple.
But the power cut above existing market is problematic in that, it is proportional with air pressure when stepping on pedal
It increases, power is cut off, but power cut is slower, and the braking moment needed is big, causes braking distance partially long, when release is stepped on
When plate, air pressure is proportional release, causes power to combine very slow, gear occurs and combine the problem of waiting for, reduce
Working efficiency is happened at if power combines on acclive inclined-plane, can be led to car slipping slowly since gear combines, is easy to happen
Accident.
Invention content
It is an object of the present invention to provide a kind of side-dump loader power cut braking systems, to overcome side dumping in the prior art
Gear combines and disconnects slow defect when loading machine power cut and combination.
Realization that the present invention adopts the following technical solutions：
Side-dump loader power cut braking system, including caliper, booster pump, pedal brake valve, gas storage
Tank, safety valve, grease combination seperating vale, air compressor machine, switch valve and speed change operating valve, caliper, booster pump, pedal brake valve,
Air accumulator, grease combination seperating vale, air compressor machine is sequentially connected in series by pipeline, further includes fast charge fast-discharge valve, the air accumulator
Outlet pipe on connect fast charge fast-discharge valve air inlet A, fast charge fast-discharge valve gas outlet B connection speed change operating valves, the pedal system
The gas outlet connecting valve valve of dynamic valve, and pass through the control mouth C of switch valve connection fast charge fast-discharge valve.
The maximum pressure of the grease combination seperating vale control air inlet is 0.784MPa.
When the control mouth C pressure of fast charge fast-discharge valve reaches 0.45MPa, air accumulator directly passes through the air inlet of fast charge fast-discharge valve
Mouth A is connected to speed change operating valve.
The pedal brake valve pedal travel is power cut point at 2/3, improves operating comfort.
It is connected with safety valve on the air accumulator, safeguard protection is carried out to system.
Compared with prior art, the beneficial effects of the invention are as follows：
(1) present invention solves the problems, such as that power cut is slow when braking, improves braking ability；
(2) when the present invention solves power combination, gear combines slow problem, improves the working efficiency of complete machine；
(3) control pressure of power cut point of the present invention is scheduled on tread depths when pedal is right up to vehicle braking,
By testing experiment, about 2/3 pedal travel position, operating comfort are high.
Description of the drawings
Fig. 1 is the structural schematic diagram of the present invention；
Fig. 2 is the portions the I enlarged drawing of Fig. 1.
In figure：1, caliper；2, booster pump；3, pedal brake valve；4, air accumulator；5, safety valve；6, grease combination separation
Valve；7, air compressor machine；8, switch valve；9, fast charge fast-discharge valve；10, speed change operating valve；11, spring.
Specific implementation mode
The invention will be further described below in conjunction with the accompanying drawings.
As shown in Figure 1 and Figure 2, side-dump loader power cut braking system, including caliper 1, booster pump 2,
Pedal brake valve 3, air accumulator 4, safety valve 5, grease combination seperating vale 6, air compressor machine 7, switch valve 8, fast charge fast-discharge valve 9, speed change
Valve 10 is manipulated, caliper 1, booster pump 2, pedal brake valve 3, air accumulator 4, grease combination seperating vale 6, air compressor machine 7 are sequentially connected in series
Connection, the 9 air inlet A of outlet pipe connection fast charge fast-discharge valve of air accumulator 4,9 gas outlet B connection speed change operating valves of fast charge fast-discharge valve
10, the outlet pipe connecting valve valve 8 of pedal brake valve 3,8 gas outlet of switch valve connects the control mouth C of fast charge fast-discharge valve 9.
Caliper 1 is brake actuator；Booster pump 2 provides brake power；Pedal brake valve 3 controls the braking of vehicle
With the combination and cut-out for realizing power；Air accumulator 4 stores the gas of a constant volume, and air accumulator 4 has safety valve 5 above, to system
Carry out safeguard protection；It is 0.784MPa that grease, which combines seperating vale 6 and controls the maximum pressure of air inlet,；Air compressor machine 7 provides braking system
Use air pressure.
When the control mouth C pressure of fast charge fast-discharge valve 9 reaches 0.45MPa, air accumulator 4 directly passes through fast charge fast-discharge valve 9
Air inlet A is to speed change operating valve 10.
The pressure of control 11 rigidity of spring and the cut-out pressure and pedal brake valve 3 of fast charge fast-discharge valve 9 can be passed through simultaneously
Curve of output, it is pressure cut off point to make pedal output pressure at its stroke 2/3, perfect in terms of comfort and reliability
Match, makes system optimal.
The present invention operation principle be：
When work inside tunnel step on brake pedal when, 3 output gas of pedal brake valve is divided into two-way, arrives reinforcing all the way
Pump 2 completes the braking of vehicle by caliper 1, and another way arrives the control mouth C of fast charge fast-discharge valve 9 by switch valve 8, when pressure reaches
When to 0.45MPa, the pressure of the 0.784MPa of 4 the inside of air accumulator is directly grasped by the air inlet A of fast charge fast-discharge valve 9 to speed change
Vertical valve 10, quickly pushes cut-out spool, completes the cut-out of power, and in current driving force cutting system, need pedal to step on
To maximum position, maximum gas pressure 0.784MPa is exported, this effect is can be only achieved；When unclamping pedal, from pedal brake valve 3
To the gas of booster pump 2, it is discharged from the exhaust outlet of pedal brake valve 3, and since the pressure reduction of pedal brake valve 3 leads to fast charge
The control mouth C pressure of fast-discharge valve 9 starts to reduce, and when being reduced to 0.45MPa, cuts off the gas of spool from fast charge fast-discharge valve 9
Exhaust outlet be quickly discharged, shorten evacuation time, while the rigidity by increasing spring 11, make the reset speed of spool more
Soon, the two measures make power combination speed become faster, to improve work efficiency.
Claims (5)
1. a kind of side-dump loader power cut braking system, including caliper (1), booster pump (2), pedal brake valve (3),
Air accumulator (4), safety valve (5), grease combination seperating vale (6), air compressor machine (7), switch valve (8) and speed change operating valve (10), system
Dynamic pincers (1), booster pump (2), pedal brake valve (3), air accumulator (4), grease combination seperating vale (6), air compressor machine (7) pass sequentially through
Pipeline is connected in series with, it is characterised in that：Further include fast charge fast-discharge valve (9), the outlet pipe connection fast charge of the air accumulator (4) is fast
Valve (9) air inlet A, fast charge fast-discharge valve (9) gas outlet B connection speed change operating valves (10), the outlet of the pedal brake valve (3)
Mouth connecting valve valve (8), and pass through the control mouth C that switch valve (8) connects fast charge fast-discharge valve (9).
2. a kind of side-dump loader power cut braking system according to claim 1, it is characterised in that：The grease
It is 0.784MPa to combine seperating vale (6) and control the maximum pressure of air inlet.
3. a kind of side-dump loader power cut braking system according to claim 2, it is characterised in that：When fast charge is fast
When the control mouth C pressure of valve (9) reaches 0.45MPa, air accumulator (4) directly passes through the air inlet A connections of fast charge fast-discharge valve (9)
Speed change operating valve (10).
4. a kind of side-dump loader power cut braking system according to claim 3, it is characterised in that：The pedal
Brake valve (3) pedal travel is power cut point at 2/3.
5. a kind of side-dump loader power cut braking system, feature exist according to any one of claims 1-4
In：It is connected with safety valve (5) on the air accumulator (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810133899.2A CN108313039B (en) | 2018-02-09 | 2018-02-09 | Power cut-off braking system for side dump loader |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810133899.2A CN108313039B (en) | 2018-02-09 | 2018-02-09 | Power cut-off braking system for side dump loader |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108313039A true CN108313039A (en) | 2018-07-24 |
| CN108313039B CN108313039B (en) | 2023-11-21 |
Family
ID=62903411
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810133899.2A Active CN108313039B (en) | 2018-02-09 | 2018-02-09 | Power cut-off braking system for side dump loader |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108313039B (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1423225A (en) * | 1972-02-25 | 1976-02-04 | Saab Scania Ab | Pneumatic brake system for a wheeled vehicle |
| JPH1178838A (en) * | 1997-09-10 | 1999-03-23 | Mitsubishi Motors Corp | Braking control device for vehicle |
| JP2001253329A (en) * | 2000-03-09 | 2001-09-18 | Tcm Corp | Brake device |
| CN201300835Y (en) * | 2008-09-22 | 2009-09-02 | 厦门厦工小型机械有限公司 | Pneumatic control device of arrester |
| CN202574196U (en) * | 2012-04-22 | 2012-12-05 | 龙工(上海)机械制造有限公司 | Double-pedal brake system for wheel loader |
| CN202923632U (en) * | 2012-11-07 | 2013-05-08 | 山东山工机械有限公司 | Break control device and machine brake system comprising same |
| CN203958123U (en) * | 2014-05-23 | 2014-11-26 | 东风汽车公司 | The regenerative brake fast aeration system of servo control |
| CN104442752A (en) * | 2014-12-22 | 2015-03-25 | 江苏柳工机械有限公司 | Braking power cut-off control system of walking machine |
| CN106494376A (en) * | 2016-10-27 | 2017-03-15 | 山东临工工程机械有限公司 | Loader relay valve booster pump interior circulation air braking system |
| CN207902415U (en) * | 2018-02-09 | 2018-09-25 | 山东临工工程机械有限公司 | Side-dump loader power cut braking system |
-
2018
- 2018-02-09 CN CN201810133899.2A patent/CN108313039B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1423225A (en) * | 1972-02-25 | 1976-02-04 | Saab Scania Ab | Pneumatic brake system for a wheeled vehicle |
| JPH1178838A (en) * | 1997-09-10 | 1999-03-23 | Mitsubishi Motors Corp | Braking control device for vehicle |
| JP2001253329A (en) * | 2000-03-09 | 2001-09-18 | Tcm Corp | Brake device |
| CN201300835Y (en) * | 2008-09-22 | 2009-09-02 | 厦门厦工小型机械有限公司 | Pneumatic control device of arrester |
| CN202574196U (en) * | 2012-04-22 | 2012-12-05 | 龙工(上海)机械制造有限公司 | Double-pedal brake system for wheel loader |
| CN202923632U (en) * | 2012-11-07 | 2013-05-08 | 山东山工机械有限公司 | Break control device and machine brake system comprising same |
| CN203958123U (en) * | 2014-05-23 | 2014-11-26 | 东风汽车公司 | The regenerative brake fast aeration system of servo control |
| CN104442752A (en) * | 2014-12-22 | 2015-03-25 | 江苏柳工机械有限公司 | Braking power cut-off control system of walking machine |
| CN106494376A (en) * | 2016-10-27 | 2017-03-15 | 山东临工工程机械有限公司 | Loader relay valve booster pump interior circulation air braking system |
| CN207902415U (en) * | 2018-02-09 | 2018-09-25 | 山东临工工程机械有限公司 | Side-dump loader power cut braking system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108313039B (en) | 2023-11-21 |
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