CN102328647A - Automatic loosening and braking device and road roller with same - Google Patents
Automatic loosening and braking device and road roller with same Download PDFInfo
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- CN102328647A CN102328647A CN201110211300A CN201110211300A CN102328647A CN 102328647 A CN102328647 A CN 102328647A CN 201110211300 A CN201110211300 A CN 201110211300A CN 201110211300 A CN201110211300 A CN 201110211300A CN 102328647 A CN102328647 A CN 102328647A
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- solenoid directional
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Abstract
The invention discloses an automatic loosening and braking device and a road roller with the same. The automatic loosening and braking device comprises a loosening and braking oil pump, a first overflow valve, a first electromagnetic reversing valve, an energy accumulator and a second electromagnetic reversing valve, wherein the loosening and braking oil pump is connected with a returning opening and an oil inlet of the first overflow valve; the returning opening and the oil inlet of the first overflow valve are respectively connected with two oil ports of the first electromagnetic reversing valve; an oil outlet of the first electromagnetic reversing valve is connected with a sucker rod cavity of a brake cylinder of a brake; a first oil port of the second electromagnetic reversing valve is connected with the energy accumulator; a second oil port of the second electromagnetic reversing valve is connected with the oil outlet of the first electromagnetic reversing valve and the return opening of the first overflow valve; and when a hydraulic value of the oil outlet of the first electromagnetic reversing valve is the second electromagnetic reversing valve is approximatively equal to zero, the energy accumulator is communicated with the oil outlet of the first electromagnetic reversing valve by the second electromagnetic reversing valve. The automatic loosening and braking device can be ensured to normally loosen and brake under the condition that the loosening and braking oil pump and the like go wrong.
Description
Technical field
The present invention relates to loose brake apparatus, be specifically related to a kind of automatic loose brake apparatus and have its roller.
Background technology
What existing single steel wheel hydraulic vibratory formula roller adopted at present is that the braking during standstill mode is braked.Like extraordinary circumstances: like engine breakdown, driving engine is normal and brake pump fault or brake pump are normal and during brake circuit control element fault, roller all is in braking mode.Roller is when being in braking mode, and it can not cruising, can not drag, and roller many situation such as cut to, unload are made troubles.
Summary of the invention
In order to overcome the above-mentioned defective and the deficiency of prior art; First purpose of the present invention is to provide a kind of automatic loose brake apparatus that automatic pine is stopped of stablizing; Comprise: pine stop oil pump, first by pass valve, first solenoid directional control valve; The pine oil pump of stopping connects the return opening and the oil inlet of first by pass valve; The return opening of first by pass valve and oil inlet connect two hydraulic fluid ports of said first solenoid directional control valve respectively, and the oil outlet of said first solenoid directional control valve connects the rod chamber of the brake cylinder of drg, and said automatic loose brake apparatus also comprises: the energy storage and second solenoid directional control valve; First hydraulic fluid port of said second solenoid directional control valve connects said energy storage, and second hydraulic fluid port of said second solenoid directional control valve connects the oil outlet of first solenoid directional control valve and the return opening of first by pass valve; When second solenoid directional control valve is approximately zero in the hydraulic pressure value of the first solenoid directional control valve oil outlet, be communicated with the oil outlet of the energy storage and first solenoid directional control valve.
In order to overcome the above-mentioned defective and the deficiency of prior art, second purpose of the present invention is to provide a kind of roller of using above-mentioned automatic loose brake apparatus.
The present invention is through adding the branch road of being made up of the energy storage and first solenoid directional control valve in former brake circuit; When the oil outlet of the energy storage and first solenoid directional control valve is communicated with; Be implemented in the pine normal loose of stopping under the situation that oil pump etc. breaks down and stop, promptly under various situation, stablize pine and stop.
Description of drawings
Shown in Figure 1 for the structural representation of the automatic loose brake apparatus embodiment of the present invention;
Shown in Figure 2 for the structural representation of the automatic loose brake apparatus middle controller embodiment of the present invention.
The specific embodiment
To combine the accompanying drawing in the embodiment of the invention below, the technical scheme in the embodiment of the invention is carried out clear, intactly description, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the present invention's protection.
Like Fig. 1 and shown in Figure 2, the automatic loose brake apparatus embodiment of the present invention comprises: pine stop oily 1 pump, three-position electromagnetic change-over valve 3, compression indicator 4, pressure sensor 6 and 10, energy storage 7, bi-bit bi-pass solenoid directional control valve 8, by pass valve 9 and 11.
Wherein, stop oil pump 1 of pine connects the return opening and the oil inlet of by pass valve 11; The return opening of by pass valve 11 and oil inlet connect two hydraulic fluid ports of three-position electromagnetic change-over valve 3 respectively; The oil outlet of three-position electromagnetic change-over valve 3 connects the rod chamber of the brake cylinder 5 of drg; A hydraulic fluid port of bi-bit bi-pass solenoid directional control valve 8 connects energy storage 7, and another hydraulic fluid port connects the oil outlet of three-position electromagnetic change-over valve 3 and a hydraulic fluid port of by pass valve 9, and another hydraulic fluid port of this by pass valve 9 connects the return opening of by pass valve 11; Pressure sensor 6 is used for the hydraulic pressure value of sensing solenoid directional control valve 3 oil outlets; Controller 12; Being used for being approximately zero in the force value that pressure sensor 6 senses (is that sensing solenoid directional control valve 3 oil outlets do not have fuel-displaced; Can't normal loose stop) time, control is to 8 power supplies of bi-bit bi-pass solenoid directional control valve, thereby makes energy storage 7 be communicated with the oil outlet of solenoid directional control valve 3.
Preferably, as shown in Figure 2, this controller 12 can comprise:
Judging unit 120 is used to compare force value and preset value and another preset value that pressure sensor 10 senses, and compares force value and preset value that pressure sensor 6 senses; Wherein, this another preset value is greater than this preset value;
Supply control unit 122; Be used for when judging unit 120 confirms that force value that force value that pressure sensors 10 sense senses less than preset value and pressure sensor 6 is greater than preset value; Control is to 8 power supplies of bi-bit bi-pass solenoid directional control valve, and energy storage 7 is communicated with the oil outlet of three-position electromagnetic change-over valve 3;
Alarm control unit 124 is used for when judging unit 120 confirms that force value that force value that pressure sensors 10 sense senses less than preset value and pressure sensor 6 is less than preset value, and control presssure sensor 10 sends alerting signals; Certainly, when pressure sensor 10 can be lower than preset value in the hydraulic pressure value in the energy storage 7, directly send alerting signal; So alarm control unit 124 is further preferred scheme;
Outage control unit 126, the force value that is used for sensing at judging unit 120 definite pressure sensors 10 are greater than this another preset value, and control is to 8 outages of bi-bit bi-pass solenoid directional control valve, and energy storage 7 breaks off with the oil outlet of three-position electromagnetic change-over valve 3.
Concrete working process is explained as follows: when each equipment just often, the engine drive pine oil pump 1 of stopping is pulled the handle that goes; Electromagnet DY2 gets electric, and three-position electromagnetic change-over valve 3 spools move down, and pressure oil gets into the rod chamber of brake cylinder 5 through oil pipe; Promoting brake cylinder 5 pistons and piston rod moves to right; Brake plate is separated with rotating plate, and brake off is realized the pine function of stopping; Work as engine breakdown; Stop oil pump 1 can not work the time like pine, and the electromagnet of controller 12 control bi-bit bi-pass solenoid directional control valves 8 gets electric, and the pressure oil in the energy storage 7 gets into brake cylinder 5 rod chambers through oil pipe; Promoting brake cylinder 5 pistons and piston rod moves to right; Brake plate is separated with rotating plate, and brake off is realized the automatic pine function of stopping.
Preferably; Pressure sensor 10 and pressure sensor 6 are housed in the automatic loose brake apparatus; When pressure is lower than preset value (like 22bar, can be described as first preset value) in energy storage 7, and the pressure that detects of pressure sensor 6 is when being higher than preset value and being higher than 22bar; The electromagnet DY1 of bi-bit bi-pass solenoid directional control valve 8 gets electric, energy storage 7 and main oil feeding line (being the oil outlet of three-position electromagnetic change-over valve 3) conducting; Realize that like this pine oil pump 1 of stopping stops in the function satisfying normal pine, replenish hydraulic oil for energy storage 7; Replenishing the hydraulic pressure value of energy storage 7 is set by by pass valve 9; As can setup pressure value 26bar (being also referred to as second preset value); Guarantee that energy storage 7 is not damaged, when energy storage 7 force value reach 26bar, by pass valve 9 overflows; While bi-bit bi-pass solenoid directional control valve 8 electromagnet DY1 dead electricity, energy storage replenishes hydraulic oil to be finished;
If pressure is lower than preset value (like 22bar) in energy storage 7; And when the pressure that pressure sensor 6 detects is lower than 22bar; Controller 12 control bi-bit bi-pass solenoid directional control valves 8 electromagnet DY1 do not work, and pressure sensor 10 sends alerting signal, reminds operating personal inspection reason and gets rid of fault; To guarantee that energy storage 7 remains enough satisfied pines required pressure oil of stopping, satisfy roller and under what situation, all possess the automatic pine function of stopping.
It will be appreciated by those skilled in the art that; Stop for being implemented in the pine pine of stopping under oil pump 1 failure condition such as grade automatically; Can energy storage 7 directly be communicated with the oil outlet of three-position electromagnetic change-over valve 3, let energy storage 7 be brake cylinder 5 fuel feeding always, oil pump 1 grade does not break down if pine is stopped; The hydraulic oil of the oil outlet of hydraulic oil in the energy storage 7 and three-position electromagnetic change-over valve 3 is when hypertonia, by by pass valve 11 overflows; Utilize the power supply control of 12 pairs of bi-bit bi-pass solenoid directional control valves 8 of bi-bit bi-pass solenoid directional control valve 8 and controller and three-position electromagnetic change-over valve 3 to can be implemented in stop oil pump 1 etc. of pine and do not carry out fuel feeding according to original branch road when breaking down; Stop oil pump 1 grade when breaking down pine, carry out fuel feeding by energy storage 7; The setting of pressure sensor can be implemented under the situation of three-position electromagnetic change-over valve 3 normal fuel injections energy storage 7 being carried out repairing; Being provided with of by pass valve 9 guaranteed when by pass valve 11 breaks down, can prevent the pine hypertonia of stopping, and guarantees that stop oil pump 1, Hydraulic Elements of brake cylinder 5, pine is not damaged; Three-position electromagnetic change-over valve 3 can be two solenoid directional control valves; Bi-bit bi-pass solenoid directional control valve 8 also can other solenoid directional control valve, can realize that switching function gets final product.
The branch road at various embodiments of the present invention three-position electromagnetic change-over valve 3 place can keep the former pine function of stopping unaffected; Automatic pine is stopped under the situation that the branch road at bi-bit bi-pass solenoid directional control valve 8 and energy storage 7 places can guarantee to break down; So the synergy of three-position electromagnetic change-over valve 3, bi-bit bi-pass solenoid directional control valve 8 and energy storage 7 can guarantee all possess the automatic pine function of stopping in any case increasing; Thoroughly the single-drum road roller of solving over is when engine breakdown or pine are stopped pump, valve fault, and the problem that can not pine stop and compact conformation, the volume of each embodiment are little, convenient for installation and maintenance; The power supply of solenoid directional control valve 8 is controlled to be preferred version by controller 12, and controller 12 carries out automatic guidance according to the force value of pressure sensor 6 sensings, is further preferred scheme.
The above is merely preferred embodiment of the present invention, and is in order to restriction the present invention, not all within spirit of the present invention and principle, any modification of being done, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. automatic loose brake apparatus; Comprise: pine stop oil pump (1), first by pass valve (11), first solenoid directional control valve (3); The said pine oil pump (1) of stopping connects the return opening and the oil inlet of said first by pass valve (11), and the return opening of said first by pass valve (11) and oil inlet connect two hydraulic fluid ports of said first solenoid directional control valve (3) respectively, and the oil outlet of said first solenoid directional control valve (3) connects the rod chamber of the brake cylinder (5) of drg; It is characterized in that said automatic loose brake apparatus also comprises:
Energy storage (7) and second solenoid directional control valve (8); First hydraulic fluid port of said second solenoid directional control valve (8) connects said energy storage (7), and second hydraulic fluid port of said second solenoid directional control valve (8) connects the oil outlet of said first solenoid directional control valve (3) and the return opening of said first by pass valve (11); When said second solenoid directional control valve (8) is approximately zero in the hydraulic pressure value of said first solenoid directional control valve (3) oil outlet, be communicated with the oil outlet of said energy storage (7) and said first solenoid directional control valve (3).
2. automatic loose brake apparatus according to claim 1 is characterized in that, also comprises:
Controller (12) is used for when the hydraulic pressure value of said first solenoid directional control valve (3) oil outlet is approximately zero, and control is to said second solenoid directional control valve (8) power supply, and said energy storage (7) is communicated with the oil outlet of said first solenoid directional control valve (3).
3. automatic loose brake apparatus according to claim 2 is characterized in that, also comprises:
First pressure sensor (6) is used for the hydraulic pressure value of said first solenoid directional control valve of sensing (3) oil outlet, and said hydraulic pressure value is sent to said controller (12).
4. automatic loose brake apparatus according to claim 3 is characterized in that, also comprises:
Second pressure sensor (10) is used to detect the hydraulic pressure value in the said energy storage (7), and the hydraulic pressure value said energy storage (7) in is when being lower than first preset value, the transmission alerting signal.
5. automatic loose brake apparatus according to claim 4 is characterized in that, said controller (12) comprising:
Judging unit (120) is used to compare force value and said first preset value and second preset value that said second pressure sensor (10) senses, and compares force value and said first preset value that said first pressure sensor (6) senses; Wherein, said second preset value is greater than said first preset value;
Supply control unit (122); Be used for when said judging unit (120) is confirmed force value that force value that said second pressure sensor (10) senses senses less than said first preset value and said first pressure sensor (6) greater than said first preset value; Control is to said second solenoid directional control valve (8) power supply, and said energy storage (7) is communicated with the oil outlet of said first solenoid directional control valve (3);
Outage control unit (126); Be used for confirming that at said judging unit (120) force value that said second pressure sensor (10) senses is greater than said second preset value; Control is to said second solenoid directional control valve (8) outage, and said energy storage (7) breaks off with the oil outlet of said first solenoid directional control valve (3).
6. automatic loose brake apparatus according to claim 5 is characterized in that, said controller (12) also comprises:
Alarm control unit (124); Be used for when said judging unit (120) is confirmed force value that force value that said second pressure sensor (10) senses and said first pressure sensor (6) sense all less than said first preset value, controlling said second pressure sensor (10) and sending said alerting signal.
7. require each described automatic loose brake apparatus among the 2-6 according to aforesaid right, it is characterized in that, also comprise:
Second by pass valve (9), two hydraulic fluid ports of said second by pass valve (9) connect the oil outlet of said first electromagnetic valve and the return opening of said first by pass valve (11) respectively.
8. require each described automatic loose brake apparatus among the 1-6 according to aforesaid right, it is characterized in that said first solenoid directional control valve (3) is the three-position electromagnetic change-over valve; Said second solenoid directional control valve (8) is the bi-bit bi-pass solenoid directional control valve.
9. require each described automatic loose brake apparatus among the 1-6 according to aforesaid right, it is characterized in that, also comprise and said first solenoid directional control valve (3) oil outlet bonded assembly volt meter (4).
10. a roller comprises drg and brake cylinder thereof (5), it is characterized in that, also comprises like each described automatic loose brake apparatus among the claim 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110211300 CN102328647B (en) | 2011-07-27 | 2011-07-27 | Automatic loosening and braking device and road roller with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110211300 CN102328647B (en) | 2011-07-27 | 2011-07-27 | Automatic loosening and braking device and road roller with same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102328647A true CN102328647A (en) | 2012-01-25 |
| CN102328647B CN102328647B (en) | 2013-09-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110211300 Expired - Fee Related CN102328647B (en) | 2011-07-27 | 2011-07-27 | Automatic loosening and braking device and road roller with same |
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| Country | Link |
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| CN (1) | CN102328647B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102582606A (en) * | 2012-03-16 | 2012-07-18 | 上海庞丰交通设备科技有限公司 | Hydraulic brake device |
| CN103802809A (en) * | 2012-11-08 | 2014-05-21 | 秦皇岛天业通联重工股份有限公司 | Brake control system of mining dump truck and mining dump truck |
| CN105196994A (en) * | 2015-10-27 | 2015-12-30 | 北京新能源汽车股份有限公司 | Parking brake system and vehicle |
| CN107739001A (en) * | 2017-12-01 | 2018-02-27 | 江西工埠机械有限责任公司 | A kind of new type of safe is met an urgent need liquid braking device |
| CN113734123A (en) * | 2021-09-22 | 2021-12-03 | 一汽解放汽车有限公司 | Automatic driving hydraulic braking system |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102582606A (en) * | 2012-03-16 | 2012-07-18 | 上海庞丰交通设备科技有限公司 | Hydraulic brake device |
| CN102582606B (en) * | 2012-03-16 | 2015-05-20 | 上海庞丰交通设备科技有限公司 | Hydraulic brake device |
| CN103802809A (en) * | 2012-11-08 | 2014-05-21 | 秦皇岛天业通联重工股份有限公司 | Brake control system of mining dump truck and mining dump truck |
| CN105196994A (en) * | 2015-10-27 | 2015-12-30 | 北京新能源汽车股份有限公司 | Parking brake system and vehicle |
| CN107739001A (en) * | 2017-12-01 | 2018-02-27 | 江西工埠机械有限责任公司 | A kind of new type of safe is met an urgent need liquid braking device |
| CN107739001B (en) * | 2017-12-01 | 2024-04-09 | 江西工埠机械有限责任公司 | Novel safety emergency hydraulic brake |
| CN113734123A (en) * | 2021-09-22 | 2021-12-03 | 一汽解放汽车有限公司 | Automatic driving hydraulic braking system |
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| Publication number | Publication date |
|---|---|
| CN102328647B (en) | 2013-09-25 |
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