CN103661320B - A kind of three grades of interlocking brake system of pneumatic tyred roller - Google Patents
A kind of three grades of interlocking brake system of pneumatic tyred roller Download PDFInfo
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- CN103661320B CN103661320B CN201310643102.0A CN201310643102A CN103661320B CN 103661320 B CN103661320 B CN 103661320B CN 201310643102 A CN201310643102 A CN 201310643102A CN 103661320 B CN103661320 B CN 103661320B
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Abstract
The present invention relates to a kind of three grades of interlocking brake system of pneumatic tyred roller, it is characterized in that: three-stage brake system is hydraulic pressure meta self-locking and braking, the braking of wheel limit, rear axle brake vi, and it comprises walking pump (1), emergency braking electromagnetic valve (2), driving-axle brake (4), CD-ROM drive motor (5), the first rim brake (6), the second rim brake (7), foot brake pressure transformer (8), foot brake valves (9), CD-ROM drive motor tachogen (10), controller (11) and handle (12).It realizes interlocking linkage protection and the power cut protection of hand braking, foot brake and emergency braking by electronic control technology, sensing technology, improves the reliability of complete machine deceleration and stopping performance, stationarity, operation comfort, improves the quality of road surface operation.
Description
Technical field
The present invention relates to a kind of three grades of interlocking brake system, for hydraulically powered pneumatic tyred roller.
Background technology
Current pneumatic tyred roller generally has hydraulic-driven and Mechanical Driven two kinds of main body type of drive, the brake system of its correspondence is mainly as follows: the brake system of mechanically operated pneumatic tyred roller adopts back axle braking as service brake, the braking of rear wheel rotation limit, as braking during standstill, generally adopts gas cap oil system.
Hydraulically powered pneumatic tyred roller brake system is generally returned the self-locking of middle closed system hydraulic pressure by hydraulic control pump swash plate and is carried out service brake, and the brake of reductor or drive axle is as braking during standstill.
The brake system of these two kinds of main flows is all two staged braking system, namely only adopts service brake and parking two staged braking system.In existing two staged braking system, driving system be single to wheel limit brake, or hydraulic efficiency pressure system self-locking and braking when only exporting without flow by hydraulic efficiency pressure system, but the traveling hourly velocity due to pneumatic tyred roller is high and mass inertial force is large, the impact produced when making reality execute braking is larger, deceleration and stopping performance poor reliability, and the shortcoming such as brake facing quick abrasion, impact during roller start and stop simultaneously may affect the quality of pavement compaction.
The shortcomings such as mechanically operated pneumatic tyred roller brake system also exists the rear air pressure deficiency (as descending is braked continuously) of braking continuously, and complete machine deceleration and stopping performance can decline, and braking element fault rate is high, wheel limit brake facing quick abrasion; Hydraulically powered pneumatic tyred roller is very large to the impact of hydraulic efficiency pressure system when braking at a high speed, and the damped condition that force of inertia produces, can make hydraulic efficiency pressure system instead can drag driving engine, cause racing of the engine, affect the service life of driving engine.
Summary of the invention
The object of the invention is to overcome above-mentioned deficiency, provide a kind of by property, steadily, operation comfort is good, and three grades of interlocking brake system of the low pneumatic tyred roller of maintenance cost.
The object of the present invention is achieved like this:
A kind of three grades of interlocking brake system of pneumatic tyred roller, three grades of interlocking brake system are hydraulic pressure meta self-locking and braking, the braking of wheel limit, rear axle brake vi, and it comprises walking pump, emergency braking electromagnetic valve, driving-axle brake, CD-ROM drive motor, the first rim brake, the second rim brake, foot brake pressure transformer, foot brake valves, CD-ROM drive motor tachogen, controller and handle;
A mouth, the B mouth of walking pump are all connected with the import and export of CD-ROM drive motor, composition closed system, and the P mouth of walking pump is connected with the P2 mouth of the P1 mouth of emergency braking electromagnetic valve and foot brake valves;
The A1 mouth of emergency braking electromagnetic valve is connected with the BR3 mouth of driving-axle brake, the T1 mouth connected tank of emergency braking electromagnetic valve, the BR mouth of foot brake valves is connected with the BR1 mouth of the first rim brake, the BR2 mouth of the second rim brake respectively, and the T2 mouth of foot brake valves is connected with fuel tank;
Described rim brake, rim brake act on wheel limit and export on brake disc, and driving-axle brake acts on the back axle of drive motor;
The signal output part of described controller is connected with walking pump, CD-ROM drive motor, and the signal input part of controller is connected with foot brake pressure transformer, CD-ROM drive motor tachogen, handle, and described CD-ROM drive motor tachogen is connected with CD-ROM drive motor.
The signal input part of described controller is also connected with emergency brake pressure switch and carries out low-voltage variation.
Described handle braking adopts the self-locking of hydraulic pressure meta.
Described walking pump is the Variable plunger pump of electric proportional control mode.
Described driving-axle brake is normally closed brake.
Described CD-ROM drive motor is the variable piston motor of electric proportional control.
Described first rim brake and the second rim brake are drg open in usual.
Three grades of interlocking brake system of pneumatic tyred roller of the present invention have the following advantages:
Three grades of interlocking brake system of this pneumatic tyred roller adopt hydraulic pressure meta self-locking and braking (hand braking or service brake), wheel limit jaw actuator (pedal brake), the three-stage brake system of the hydraulically powered pneumatic tyred roller of back axle wet braking (braking during standstill) these three kinds braking composition, it passes through electronic control technology, sensing technology realizes hand braking, power cut protection when the interlocking linkage protection of foot brake and emergency braking and braking, improve the reliability of complete machine deceleration and stopping performance, stationarity, mildness, weaken that driving engine is counter to be dragged and brake impact, improve quality and the operation comfort of road surface operation.
It has the following advantages compared with the two staged braking system of routine:
1, adopt hydraulic pressure meta, wheel limit and bridge drg three-stage brake, complete machine deceleration and stopping performance is more reliable.
2, adopt automatically controlled sensing technology, realize callipers brake car, soft acceleration, make the start and stop of complete machine traveling steady.
3, adopt the interlock of hand, foot brake, meet the operating habit of operator, operation comfort is good.
4, there is power cut defencive function: prevent bridge drg, rim brake from braking when dynamic output, protection wheel limit and bridge brake facing premature abrasion.
5, there is brake-pressure low-voltage variation function; When brake-pressure is too low (during lower than the response pressure braked), hydraulic power is cut off, and implements hydraulic braking.
6, there is braking interlock defencive function: must first power cut when carrying out emergency braking; When carrying out foot brake, corresponding control Power output and cut-out; When braking during standstill or emergency braking, rim brake and rear axle brake vi implement braking simultaneously.
7, there is handle meta starting protection function: handle can not start when meta, can not walk when brake-pressure is too low.
8, by automatically controlled sensing technology, penalty kick, emergency brake and cruise function can be realized.
Accompanying drawing explanation
Fig. 1 is the structural representation of three grades of interlocking brake system of pneumatic tyred roller of the present invention.
Fig. 2 is the control signal graph of a relation of three grades of interlocking brake system of pneumatic tyred roller of the present invention.
In figure: walking pump 1, emergency braking electromagnetic valve 2, emergency brake pressure switch 3, driving-axle brake 4, CD-ROM drive motor 5, first rim brake 6, second rim brake 7, foot brake pressure transformer 8, foot brake valves 9, CD-ROM drive motor tachogen 10, controller 11, handle 12.
Detailed description of the invention
See Fig. 1 and Fig. 2, the present invention relates to a kind of three grades of interlocking brake system of pneumatic tyred roller, be respectively: handle goes back to middle hydraulic pressure meta self-locking and braking (hand braking), trailing wheel limit braking (pedal brake), rear axle brake vi (parking and emergency braking).
It comprises walking pump 1, emergency braking electromagnetic valve 2, emergency brake pressure switch 3, driving-axle brake 4, CD-ROM drive motor 5, first rim brake 6, second rim brake 7, foot brake pressure transformer 8, foot brake valves 9, CD-ROM drive motor tachogen 10, controller 11 and handle 12.
A mouth (the first high-pressure oil outlet), the B mouth (the second high-pressure oil outlet) of walking pump 1 are all connected with the import and export of CD-ROM drive motor 5, composition closed system, the P mouth (slippage pump outlet) of walking pump 1 is connected with the P1 mouth (oil inlet) of emergency braking electromagnetic valve 2 and the P2 mouth (oil inlet) of foot brake valves 9;
The A1 mouth (oil outlet) of emergency braking electromagnetic valve 2 is connected with the BR3 mouth (oil inlet) of driving-axle brake 4, T1 mouth (return opening) connected tank of emergency braking electromagnetic valve 2, the BR mouth (oil outlet) of foot brake valves 9 is connected with the BR1 mouth (oil inlet) of the first rim brake 6, the BR2 mouth (oil inlet) of the second rim brake 7 respectively, and the T2 mouth (return opening) of foot brake valves 9 is connected with fuel tank.
Rim brake 6, rim brake 7 act on wheel limit and export on brake disc, and driving-axle brake 4 acts on the back axle of CD-ROM drive motor 5 driving.
Walking pump 1 is the Variable plunger pump of electric proportional control mode, and CD-ROM drive motor 5 is the variable piston motor of electric proportional control, and driving-axle brake 4 is normally closed brake, and the first rim brake 6 and the second rim brake 7 are drg open in usual.
As Fig. 2, the signal output part of described controller 11 is connected with walking pump 1, CD-ROM drive motor 5, the signal input part of controller 11 is connected with emergency brake pressure switch 3, foot brake pressure transformer 8, CD-ROM drive motor tachogen 10, handle 12, and described CD-ROM drive motor tachogen 10 is connected with CD-ROM drive motor 5.
Described handle 12 exports control signal to controller 11, and controller 11 exports ramp control signal to the proportion electro-magnet of walking pump 1 and CD-ROM drive motor 5, the swash plate change of control pump, motor, and when avoiding braking, hydraulic efficiency pressure system is counter drags driving engine.
The braking of this handle 12 adopts the self-locking of hydraulic pressure meta, and namely Hydraulic Pump swash plate returns meta, and hydraulic efficiency pressure system exports without flow, and closed system self-locking and braking slows down, i.e. service brake.
The three-stage brake system major control principle of this pneumatic tyred roller is:
When complete machine needs to walk, emergency braking electromagnetic valve 2 must conduct, and pressure oil enters driving-axle brake 4 by the A1 mouth of emergency braking electromagnetic valve 2, and remove drive axle braking, the signal that handle exports exports through controller 11, realizes the stepless change of walking.
When complete machine needs service brake, operator according to the operating habit of self, can adopt handle braking (hand braking), stretcher also can be adopted to brake.
Whole brake system adopts three grades to interlock brake system, and driver brakes and adopts the self-locking of hydraulic pressure meta at once, and namely Hydraulic Pump swash plate returns meta, and hydraulic efficiency pressure system exports without flow, and motor slows down voluntarily and stops braking; Trailing wheel limit is braked, and by establishing oil-immersed multi-disk brake on wheel limit, foot valve controls the pressure oil entering drg, carries out the braking of wheel limit; Rear axle brake vi, generally as braking during standstill or emergency braking used.
When operator carries out handle braking, controller 11 is outputed signal to by operating handle, walking pump 1 and CD-ROM drive motor 5 is controlled by the output signal of controller 11, the flow reducing Hydraulic Pump exports, reduce motor rotating speed thus reduce the speed of a motor vehicle, controller 11 can export ramp signal, simultaneously control walking pump 1, CD-ROM drive motor 5 displacement variation, make whole braking procedure steady, and there will not be that hydraulic efficiency pressure system is counter drags driving engine.
When operator carries out foot brake, pressure oil enters the first rim brake 6, second rim brake 7 by foot brake valves 9, foot brake pressure transformer 8 pressure signal can give an instruction to controller 11, controller 11 exports the control signal of walking pump 1, reduce walking pump 1 swash plate pivot angle or during swash plate is returned, thus to reduce or cutting-off liquid pressure power exports, make braking procedure steady, also achieve service braking operation simultaneously and suffered the linkage interlocked of handle braking and foot brake.
When pin step on foot brake valves 9 carry out penalty kick slow down time, pressure signal is changed into the export ratio linear signal of supply controller 11 by foot brake pressure transformer 8, with the flow of suitable reduction walking pump 1, when unclamping foot brake valves 9, the output signal of controller 11 can make the speed of a motor vehicle recover (haveing nothing to do with the position of handle) slowly, and then avoids the unexpected preshoot of loose service brake car.Namely when foot brake has signal to export, controller 11 first masks the output signal of handle, with the control signal priority acccess control of foot brake valves 9.
Handle braking and foot brake can realize linkage interlocked, that is: service brake can realize hydraulic power cut-out and hydraulic self-locking brake by the control handle of walking pump 1, also can carry out the braking of wheel limit by foot brake valves 9, handle and pedal brake realize interlock by controller 11 simultaneously.Namely when operator's habituation adopts pedal brake, the exportable linear signal of foot brake pressure transformer 8, is transformed by controller, exports the signal processed of walking pump control 1, reduce or cutting-off liquid pressing system Power output, realize the power cut of hydraulic efficiency pressure system during the braking of wheel limit; When foot brake carries out point in a flash, foot brake pressure transformer 8 can carry out transforming by controller 11 control signal exporting walking pump 1 and reduce the speed of a motor vehicle, reduces the wearing and tearing of rim brake.
Such handle, foot brake form interlocking linkage, can protect rim brake under unpowered output state, only carry out the braking of inertia, brake steadily and reduce rim brake wear and tear and avoid braking high temperature.
When implementing emergency braking or braking during standstill, anxious braking electromagnetic valve 2 dead electricity, the hydraulic oil oil sump tank of driving-axle brake 4, driving-axle brake 4 implements braking, during the swash plate directly controlling walking pump 1 with Time Controller 11 output signal returns, cutting-off liquid pressure power exports, protection driving-axle brake 4;
Emergency brake pressure switch 3 can carry out low-voltage variation; when the response pressure of brake-pressure lower than driving-axle brake 4; emergency brake pressure switch 3 exports control signal to controller 11; during controller 11 output signal control walking pump 1, CD-ROM drive motor 5 swash plate return; cut off Power output, realize braking low-voltage variation.
Claims (5)
1. three grades of interlocking brake system of a pneumatic tyred roller, it is characterized in that: three-stage brake system is hydraulic pressure meta self-locking and braking, the braking of wheel limit, rear axle brake vi, and it comprises walking pump (1), emergency braking electromagnetic valve (2), driving-axle brake (4), CD-ROM drive motor (5), the first rim brake (6), the second rim brake (7), foot brake pressure transformer (8), foot brake valves (9), CD-ROM drive motor tachogen (10), controller (11) and handle (12);
A mouth, the B mouth of walking pump (1) are all connected with the import and export of CD-ROM drive motor (5), composition closed system, and the P mouth of walking pump (1) is connected with the P2 mouth of the P1 mouth of emergency braking electromagnetic valve (2) and foot brake valves (9);
The A1 mouth of emergency braking electromagnetic valve (2) is connected with the BR3 mouth of driving-axle brake (4), the T1 mouth connected tank of emergency braking electromagnetic valve (2), the BR mouth of foot brake valves (9) is connected with the BR1 mouth of the first rim brake (6), the BR2 mouth of the second rim brake (7) respectively, and the T2 mouth of foot brake valves (9) is connected with fuel tank;
Described rim brake (6), rim brake (7) act on wheel limit and export on brake disc, and driving-axle brake (4) acts on the back axle that CD-ROM drive motor (5) drives;
The signal output part of described controller (11) is connected with walking pump (1), CD-ROM drive motor (5), the signal input part of controller (11) is connected with foot brake pressure transformer (8), CD-ROM drive motor tachogen (10), handle (12), and described CD-ROM drive motor tachogen (10) is connected with CD-ROM drive motor (5);
The signal input part of described controller (11) is also connected with emergency brake pressure switch (3) and carries out low-voltage variation;
Described handle (12) braking adopts the self-locking of hydraulic pressure meta.
2. three grades of interlocking brake system of a kind of pneumatic tyred roller according to claim 1, is characterized in that: the Variable plunger pump that described walking pump (1) is electric proportional control mode.
3. three grades of interlocking brake system of a kind of pneumatic tyred roller according to claim 1, is characterized in that: described driving-axle brake (4) is normally closed brake.
4. three grades of interlocking brake system of a kind of pneumatic tyred roller according to claim 1, is characterized in that: the variable piston motor that described CD-ROM drive motor (5) is electric proportional control.
5. three grades of interlocking brake system of a kind of pneumatic tyred roller according to claim 1, is characterized in that: described first rim brake (6) and the second rim brake (7) are drg open in usual.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310643102.0A CN103661320B (en) | 2013-12-05 | 2013-12-05 | A kind of three grades of interlocking brake system of pneumatic tyred roller |
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| CN201310643102.0A CN103661320B (en) | 2013-12-05 | 2013-12-05 | A kind of three grades of interlocking brake system of pneumatic tyred roller |
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| CN103661320A CN103661320A (en) | 2014-03-26 |
| CN103661320B true CN103661320B (en) | 2015-12-30 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105221738B (en) * | 2014-05-27 | 2019-03-15 | 约翰迪尔（天津）有限公司 | Gearbox power cutoff control system, brake fluid system and method, running gear |
| CN104929995B (en) * | 2015-06-01 | 2017-11-24 | 吴家集 | Hydraulic traveling system system |
| CN106940633B (en) * | 2017-03-06 | 2019-09-13 | Oppo广东移动通信有限公司 | Display screen condition control method and device |
| CN107472230B (en) * | 2017-08-23 | 2023-07-07 | 徐工集团工程机械股份有限公司 | Hydraulic drive road roller braking system |
| CN110803145B (en) * | 2019-11-12 | 2021-06-15 | 三一汽车制造有限公司 | Braking system of road roller, road roller and control method |
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| US3635317A (en) * | 1969-12-17 | 1972-01-18 | Caterpillar Tractor Co | Brake control system with transmission interlock |
| CN201193024Y (en) * | 2008-03-19 | 2009-02-11 | 江阴柳工道路机械有限公司 | Road roller parking brake system |
| CN101708719A (en) * | 2009-11-15 | 2010-05-19 | 江阴柳工道路机械有限公司 | Braking system of tyre roller |
| CN101725105A (en) * | 2009-11-15 | 2010-06-09 | 江阴柳工道路机械有限公司 | Brake system of mechanical single-drum road roller |
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2013
- 2013-12-05 CN CN201310643102.0A patent/CN103661320B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3635317A (en) * | 1969-12-17 | 1972-01-18 | Caterpillar Tractor Co | Brake control system with transmission interlock |
| CN201193024Y (en) * | 2008-03-19 | 2009-02-11 | 江阴柳工道路机械有限公司 | Road roller parking brake system |
| CN101708719A (en) * | 2009-11-15 | 2010-05-19 | 江阴柳工道路机械有限公司 | Braking system of tyre roller |
| CN101725105A (en) * | 2009-11-15 | 2010-06-09 | 江阴柳工道路机械有限公司 | Brake system of mechanical single-drum road roller |
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