CN106494376A - Loader relay valve booster pump interior circulation air braking system - Google Patents
Loader relay valve booster pump interior circulation air braking system Download PDFInfo
- Publication number
- CN106494376A CN106494376A CN201610972726.0A CN201610972726A CN106494376A CN 106494376 A CN106494376 A CN 106494376A CN 201610972726 A CN201610972726 A CN 201610972726A CN 106494376 A CN106494376 A CN 106494376A
- Authority
- CN
- China
- Prior art keywords
- booster pump
- air
- relay valve
- valve
- loader
- 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.)
- Withdrawn
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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
- B60T13/24—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
- B60T13/26—Compressed-air systems
- B60T13/40—Compressed-air systems indirect, i.e. compressed air booster units indirect systems
-
- 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
- B60T13/683—Electrical control in fluid-pressure brake systems by electrically-controlled valves in pneumatic systems or parts thereof
Landscapes
- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Valves And Accessory Devices For Braking Systems (AREA)
Abstract
The invention discloses a kind of loader relay valve booster pump interior circulation air braking system, belongs to engineering machinery field.Which includes air compressor machine, oil water separator, air accumulator, air brake valve, relay valve A, booster pump A and drive axle caliper A in front and back, the air compressor machine is connected to air accumulator by oil water separator, air brake valve and relay valve A is connected with the air accumulator, the relay valve A control mouths control air accumulator to the path of booster pump A by detecting the air pressure at air brake valve, the relay valve A connects booster pump A, drive axle caliper A before and after the booster pump A connections.Dirt during the present invention solves the problems, such as booster pump because of air fails, and reduces booster pump fault rate, improves the response speed of booster pump braking and brake release, increases braking reliability, method simple practical, the use cost of reduction client and maintenance cost.
Description
Technical field
The invention belongs to a kind of Construction Machinery System, specifically, more particularly in a kind of loader relay valve booster pump
Circulation air braking system.
Background technology
Brakes is used for reduction of speed or stopping and temporary parking on level land or ramp when loader is travelled, loader
Operating mode is more severe, frequently advances, retreats or stop in operation process, is required for braking to coordinate and realizes.Due to braking
The performance of system is directly connected to the normal work of the life security of driver and whole machine, and the reliability that therefore brakes is with safety just
Seem and be even more important., typically using the brakes that gas-liquid is comprehensive, the gas of compressor output, through profit for country's loader at present
After separator process, it is stored in air accumulator, booster pump and piston movement is controlled by brake valve, compressed air and braking is realized
Energy conversion between liquid, then caliper is promoted by high-voltage oil liquid and implements braking.Booster pump is used as the liquid of gas cap system energy
, often there is the failures such as gas leakage, oil leak in use in the core parts of conversion.Analyzing its reason, to be primarily due to loader frequent
It is operated in the complexity rugged environment such as dust, muddy water, grit, impurity, moisture in air etc. can pass through spring cavity and air
Connected entrance enter booster pump cylinder in, moisture causes the dirts such as the corrosion inside booster pump, corrosion and silt to cause to reinforce
Pumping chamber's bad seals, cause the faults frequents such as gas leakage to occur.Booster pump producer of the country is all to install breathing in spring cavity at present
Device, by improving the filtering accuracy of respiratory organ, prevents the pollutant in air from entering booster pump air cavity.But according to loader
From the point of view of actual condition, the time that filtering accuracy can only delay build up of dirt inside booster pump is improved, it is impossible to fundamentally solve to add
Excessively dirty problem inside power pump.And when filtering accuracy is too high, there is the risk for affecting ventilation, dust to block breath device,
So as to cause booster pump to fail.
Content of the invention
It is an object of the present invention to provide a kind of loader relay valve booster pump interior circulation air braking system, to overcome prior art
Often there is the defect of the failures such as gas leakage, oil leak in use in middle booster pump.
The present invention employs the following technical solutions realization：A kind of loader relay valve booster pump interior circulation straight air brake system
System, including air compressor machine, oil water separator, air accumulator, air brake valve, relay valve A, booster pump A and drive axle caliper A in front and back,
The air compressor machine is connected to air accumulator by oil water separator, is connected with air brake valve and relay valve A on the air accumulator, described
Relay valve A control mouths control air accumulator to the path of booster pump A by detecting the air pressure at air brake valve, and the relay valve A connects
Meet booster pump A, drive axle caliper A before and after the booster pump A connections.
Also include the relay valve B, the booster pump B that are connected in parallel with relay valve A and drive axle caliper B in front and back, the gas storage
Air brake valve and relay valve B is connected with tank, and the relay valve B controls air accumulator by detecting the air pressure signal at air brake valve
To the path of booster pump B, the relay valve A connections booster pump B, drive axle caliper B before and after the booster pump B connections.
Connection safety valve on the air accumulator.
Compared with prior art, the invention has the beneficial effects as follows：
Dirt during the present invention solves the problems, such as booster pump because of air fails, and reduces booster pump fault rate, improves reinforcing
Pump braking and the response speed of brake release, increase braking reliability, method simple practical, the use cost of reduction client and dimension
Accomplish this.
Description of the drawings
Fig. 1 is the structural representation of the present invention.
In figure：1st, air compressor machine；2nd, oil water separator；3rd, air accumulator；4th, relief valve；5th, air brake valve；6th, relay valve A；7、
Relay valve B；8th, booster pump A；9th, booster pump B；10th, drive axle caliper A in front and back；11st, drive axle caliper B in front and back.
Specific embodiment
The invention will be further described below in conjunction with the accompanying drawings.
Embodiment 1：
As shown in figure 1, a kind of loader relay valve booster pump interior circulation air braking system, including air compressor machine 1, oil-water separation
Device 2, air accumulator 3, air brake valve 5, relay valve A6, booster pump A8 and drive axle caliper A10 in front and back, the air compressor machine 1 pass through
Oil water separator 2 connects air accumulator 3, connection air brake valve 5 and relay valve A6 on the air accumulator 3, the relay valve A6 controls
Mouth controls air accumulator 3 to the path of booster pump A8, the relay valve A6 connections booster pump by detecting the air pressure at air brake valve 5
A8, drive axle caliper A10 before and after the booster pump A8 connections.
Embodiment 2：
As shown in figure 1, a kind of loader relay valve booster pump interior circulation air braking system, including air compressor machine 1, oil-water separation
Device 2, air accumulator 3, relief valve 4, air brake valve 5, relay valve A6 and relay valve B7, booster pump A8 and booster pump B9, drive in front and back
Bridge caliper A10 and in front and back drive axle caliper B11.The air compressor machine 1 connects air accumulator 3, air compressor machine by oil water separator 2
1 provides compressed air for brakes, and by being stored in after oil water separator 2 in air accumulator 3, air accumulator 3 is installed relief valve 4 and kept away
Exempt from pressure inside the tank too high, protection system safety.Be connected with the air accumulator 3 air brake valve 5, relay valve A6 and with relay valve A6
Relay valve B7 in parallel, the relay valve A6 and relay valve B7 control mouths control gas storage by detecting the air pressure at air brake valve 5
Path of the tank 3 to booster pump A8, the relay valve A6 and relay valve B7 connect booster pump A8 and booster pump B9, the reinforcing respectively
Pump A8 and booster pump B9 connect before and after drive axle caliper A10 and drive axle caliper B11 in front and back respectively.
Loader steps on the pedal of air brake valve 5 when brake operating is driven a vehicle, and gas pressure is in relay valve A6 and relay valve
B7 control mouths, open path of the air accumulator 3 to booster pump A8 and booster pump B9 in relay valve A6 and relay valve B7, by pressure air
The cylinder chamber of booster pump A8 and booster pump B9 is delivered to, after booster pump A8 and booster pump B9 superchargings, high-pressure brake liquid is made
For in front and back drive axle caliper A10 and the brake piston of drive axle caliper B11 in front and back, to realize braking；At the same time,
During cylinder spring-compressed, the gas of spring cavity passes through the air vent of relay valve A6 and relay valve B7, is discharged in air.
Loader unclamps the pedal of air brake valve 5 in brake release, and the cylinder piston of booster pump A8 and booster pump B9 exists
Reset under spring-force driven dual, gas of the cylinder without spring side adds to spring cavity by pipeline, unnecessary gas passes through servo
The air vent of valve A6 and relay valve B7 is discharged in air.Relay valve A6 and the use of relay valve B7, shorten pressure in air accumulator 3
Air also accelerates exhaust velocity during brake release to booster pump A8 and the transmission time of booster pump B9, that is, improve braking
Response speed, increase braking reliability.
Claims (3)
1. a kind of loader relay valve booster pump interior circulation air braking system, it is characterised in that：Including air compressor machine (1), profit point
From device (2), air accumulator (3), air brake valve (5), relay valve A (6), booster pump A (8) and drive axle caliper A (10) in front and back, institute
State air compressor machine (1) and air accumulator (3) connected by oil water separator (2), described air accumulator (3) upper connection air brake valve (5) and after
Booster pump is arrived by detecting that the air pressure at air brake valve (5) place controls air accumulator (3) in dynamic valve A (6), relay valve A (6) control mouth
The path of A (8), described relay valve A (6) connection booster pump A (8), drive axle caliper A before and after described booster pump A (8) connection
(10).
2. loader relay valve booster pump interior circulation air braking system according to claim 1, it is characterised in that：Also include
The relay valve B (7), the booster pump B (9) that are connected in parallel with relay valve A (6) and in front and back drive axle caliper B (11), the air accumulator
(3) air brake valve (5) and relay valve B (7), the air pressure of described relay valve B (7) by detection air brake valve (5) place are connected with
Path of signal control air accumulator (3) to booster pump B (9), described relay valve A (6) connection booster pump B (9), the booster pump B
(9) drive axle caliper B (11) before and after connecting.
3. loader relay valve booster pump interior circulation air braking system according to claim 1 and 2, it is characterised in that：Institute
State the upper connection safety valve (4) of air accumulator (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610972726.0A CN106494376A (en) | 2016-10-27 | 2016-10-27 | Loader relay valve booster pump interior circulation air braking system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610972726.0A CN106494376A (en) | 2016-10-27 | 2016-10-27 | Loader relay valve booster pump interior circulation air braking system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106494376A true CN106494376A (en) | 2017-03-15 |
Family
ID=58323216
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610972726.0A Withdrawn CN106494376A (en) | 2016-10-27 | 2016-10-27 | Loader relay valve booster pump interior circulation air braking system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106494376A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108313039A (en) * | 2018-02-09 | 2018-07-24 | 山东临工工程机械有限公司 | Side-dump loader power cut braking system |
| CN110843761A (en) * | 2019-11-29 | 2020-02-28 | 江苏徐工工程机械研究院有限公司 | Loader power system, control method thereof and loader |
| CN111791858A (en) * | 2020-06-19 | 2020-10-20 | 龙工(上海)机械制造有限公司 | Service braking system for wheel loader |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2928613Y (en) * | 2006-07-21 | 2007-08-01 | 张作彬 | Double pipeline gas-liquid brake system |
| CN201432658Y (en) * | 2009-04-18 | 2010-03-31 | 李玉喜 | Brake and emergency brake system under safety early warning state |
| CN203623654U (en) * | 2013-12-25 | 2014-06-04 | 厦门厦工机械股份有限公司 | Double insurance brake system for small-sized loader |
| CN205086896U (en) * | 2015-10-09 | 2016-03-16 | 山东临工工程机械有限公司 | Afterburning pump inner loop gas braking system of loader |
-
2016
- 2016-10-27 CN CN201610972726.0A patent/CN106494376A/en not_active Withdrawn
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2928613Y (en) * | 2006-07-21 | 2007-08-01 | 张作彬 | Double pipeline gas-liquid brake system |
| CN201432658Y (en) * | 2009-04-18 | 2010-03-31 | 李玉喜 | Brake and emergency brake system under safety early warning state |
| CN203623654U (en) * | 2013-12-25 | 2014-06-04 | 厦门厦工机械股份有限公司 | Double insurance brake system for small-sized loader |
| CN205086896U (en) * | 2015-10-09 | 2016-03-16 | 山东临工工程机械有限公司 | Afterburning pump inner loop gas braking system of loader |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108313039A (en) * | 2018-02-09 | 2018-07-24 | 山东临工工程机械有限公司 | Side-dump loader power cut braking system |
| CN108313039B (en) * | 2018-02-09 | 2023-11-21 | 山东临工工程机械有限公司 | Power cut-off braking system for side dump loader |
| CN110843761A (en) * | 2019-11-29 | 2020-02-28 | 江苏徐工工程机械研究院有限公司 | Loader power system, control method thereof and loader |
| CN110843761B (en) * | 2019-11-29 | 2024-02-02 | 江苏徐工工程机械研究院有限公司 | Loader power system, control method thereof and loader |
| CN111791858A (en) * | 2020-06-19 | 2020-10-20 | 龙工(上海)机械制造有限公司 | Service braking system for wheel loader |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20170315 |