CN102328647B - Automatic loosening and braking device and road roller with same - Google Patents
Automatic loosening and braking device and road roller with same Download PDFInfo
- Publication number
- CN102328647B CN102328647B CN 201110211300 CN201110211300A CN102328647B CN 102328647 B CN102328647 B CN 102328647B CN 201110211300 CN201110211300 CN 201110211300 CN 201110211300 A CN201110211300 A CN 201110211300A CN 102328647 B CN102328647 B CN 102328647B
- Authority
- CN
- China
- Prior art keywords
- solenoid directional
- directional control
- control valve
- valve
- oil outlet
- 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.)
- Expired - Fee Related
Links
Images
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 the second electromagnetic reversing valve at the oil outlet of the first electromagnetic reversing valve not let the oil out, 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 now adopted is that the braking during standstill mode is braked.As extraordinary circumstances: as 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 normally travel, and can not drag, and roller many situations such as cut to, unload are made troubles.
Summary of the invention
In order to overcome 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: the pine oil pump of stopping, first by pass valve, first solenoid directional control valve, the pine oil pump of stopping connects 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 described first solenoid directional control valve respectively, the oil outlet of described first solenoid directional control valve connects the rod chamber of the brake cylinder of drg, described automatic loose brake apparatus also comprises: energy storage and second solenoid directional control valve, first hydraulic fluid port of described second solenoid directional control valve connects described energy storage, and second hydraulic fluid port of described second solenoid directional control valve connects the oil outlet of first solenoid directional control valve and the return opening of first by pass valve; Second solenoid directional control valve does not have when fuel-displaced at the first solenoid directional control valve oil outlet, is communicated with the oil outlet of energy storage and first solenoid directional control valve.
In order to overcome 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 by adding the branch road of being made up of energy storage and first solenoid directional control valve in former brake circuit, when the oil outlet of 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, namely stablize pine in all cases and stop.
Description of drawings
Figure 1 shows that the structural representation of the automatic loose brake apparatus embodiment of the present invention;
Figure 2 shows that the structural representation of the automatic loose brake apparatus middle controller embodiment of the present invention.
The specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described, 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 belong to the scope of protection of the invention not making the every other embodiment that obtains under the creative work prerequisite.
As shown in Figures 1 and 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 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 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 for force value and preset value and another preset value that comparison pressure sensor 10 senses, and compares force value and the 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 determines 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 determines 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 the hydraulic pressure value in energy storage 7 be lower than preset value, 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 disconnects 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, pull the handle that travels, electromagnet DY2 gets electric, and three-position electromagnetic change-over valve 3 spools move down, and pressure oil enters 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 as pine, the electromagnet of controller 12 control bi-bit bi-pass solenoid directional control valves 8 gets, pressure oil in the energy storage 7 enters 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, pressure is lower than preset value (as 22bar in energy storage 7, can be described as first preset value) time, and when the pressure that pressure sensor 6 detects is higher than preset value and is 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 (as 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, pressure sensor 10 sends alerting signal, remind operating personal inspection reason and get 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, energy storage 7 directly can be communicated with the oil outlet of three-position electromagnetic change-over valve 3, allow 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 the 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; The arranging of by pass valve 9 guaranteed can prevent the pine hypertonia of stopping when by pass valve 11 breaks down, guarantee 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 places 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 is controlled automatically according to the force value of pressure sensor 6 sensings, is further preferred scheme.
The above only is preferred embodiment of the present invention, and is in order to limit the present invention, within the spirit and principles in the present invention not all, any modification of doing, 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 described pine oil pump (1) of stopping connects return opening and the oil inlet of described first by pass valve (11), the return opening of described first by pass valve (11) and oil inlet connect two hydraulic fluid ports of described first solenoid directional control valve (3) respectively, the oil outlet of described first solenoid directional control valve (3) connects the rod chamber of the brake cylinder (5) of drg, it is characterized in that described automatic loose brake apparatus also comprises:
Energy storage (7) and second solenoid directional control valve (8), first hydraulic fluid port of described second solenoid directional control valve (8) connects described energy storage (7), and second hydraulic fluid port of described second solenoid directional control valve (8) connects the oil outlet of described first solenoid directional control valve (3) and the return opening of described first by pass valve (11); Described second solenoid directional control valve (8) does not have when fuel-displaced at described first solenoid directional control valve (3) oil outlet, is communicated with the oil outlet of described energy storage (7) and described 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 not having when fuel-displaced at described first solenoid directional control valve (3) oil outlet, and control is to described second solenoid directional control valve (8) power supply, and described energy storage (7) is communicated with the oil outlet of described 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 described first solenoid directional control valve of sensing (3) oil outlet, and described hydraulic pressure value is sent to described controller (12).
4. automatic loose brake apparatus according to claim 3 is characterized in that, also comprises:
Second pressure sensor (10), for detection of the hydraulic pressure value in the described energy storage (7), and the hydraulic pressure value described 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, described controller (12) comprising:
Judging unit (120) is used for force value and described first preset value and second preset value that described second pressure sensor of comparison (10) senses, and compares force value and described first preset value that described first pressure sensor (6) senses; Wherein, described second preset value is greater than described first preset value;
Supply control unit (122), be used for when described judging unit (120) is determined force value that force value that described second pressure sensor (10) senses senses less than described first preset value and described first pressure sensor (6) greater than described first preset value, control is to described second solenoid directional control valve (8) power supply, and described energy storage (7) is communicated with the oil outlet of described first solenoid directional control valve (3);
Outage control unit (126), be used for determining that at described judging unit (120) force value that described second pressure sensor (10) senses is greater than described second preset value, control is to described second solenoid directional control valve (8) outage, and described energy storage (7) disconnects with the oil outlet of described first solenoid directional control valve (3).
6. automatic loose brake apparatus according to claim 5 is characterized in that, described controller (12) also comprises:
Alarm control unit (124), be used for when described judging unit (120) is determined force value that force value that described second pressure sensor (10) senses and described first pressure sensor (6) sense all less than described first preset value, controlling described second pressure sensor (10) and sending described 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 described second by pass valve (9) connect the oil outlet of described first electromagnetic valve and the return opening of described 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 described first solenoid directional control valve (3) is the three-position electromagnetic change-over valve; Described 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 the volt meter (4) that is connected with described first solenoid directional control valve (3) oil outlet.
10. a roller comprises drg and brake cylinder thereof (5), it is characterized in that, also comprises as 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 CN102328647A (en) | 2012-01-25 |
| CN102328647B true CN102328647B (en) | 2013-09-25 |
Family
ID=45480693
Family Applications (1)
| 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 |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102328647B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 braking system and vehicle |
| 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 |
| CN113734123B (en) * | 2021-09-22 | 2023-05-12 | 一汽解放汽车有限公司 | Automatic driving hydraulic braking system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4209988A (en) * | 1978-02-09 | 1980-07-01 | Stothert & Pitt Limited | Safety control system for self-propelled road rollers |
| US4779418A (en) * | 1987-02-17 | 1988-10-25 | M-B-W Inc. | Remote control system for a soil compactor |
| CN2514033Y (en) * | 2001-12-04 | 2002-10-02 | 湘潭江麓工程机械有限公司 | Hydraulic vibration system for vibration road roller |
| CN2880896Y (en) * | 2006-04-18 | 2007-03-21 | 江苏骏马压路机械有限公司 | Hydraulic system of hydraulic road roller |
| CN201566604U (en) * | 2009-11-15 | 2010-09-01 | 江阴柳工道路机械有限公司 | Braking system of mechanical single-steel-wheel road roller |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6981558B2 (en) * | 2001-05-02 | 2006-01-03 | Wacker Construction Equipment Ag | Controller for an unbalanced mass adjusting unit of a soil compacting device |
-
2011
- 2011-07-27 CN CN 201110211300 patent/CN102328647B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4209988A (en) * | 1978-02-09 | 1980-07-01 | Stothert & Pitt Limited | Safety control system for self-propelled road rollers |
| US4779418A (en) * | 1987-02-17 | 1988-10-25 | M-B-W Inc. | Remote control system for a soil compactor |
| CN2514033Y (en) * | 2001-12-04 | 2002-10-02 | 湘潭江麓工程机械有限公司 | Hydraulic vibration system for vibration road roller |
| CN2880896Y (en) * | 2006-04-18 | 2007-03-21 | 江苏骏马压路机械有限公司 | Hydraulic system of hydraulic road roller |
| CN201566604U (en) * | 2009-11-15 | 2010-09-01 | 江阴柳工道路机械有限公司 | Braking system of mechanical single-steel-wheel road roller |
Non-Patent Citations (1)
| Title |
|---|
| 王瑜等.钻机气控全盘式刹车系统制动特性模型.《四川大学学报（工程科学版）》.2008,第40卷(第6期),第197-202页. * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102328647A (en) | 2012-01-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102328647B (en) | Automatic loosening and braking device and road roller with same | |
| CN102229328B (en) | Vehicle mechanical energy-saving hydraulic system with multi-pump confluence | |
| CN205035847U (en) | Underground scraper decides variable hydraulic system | |
| CN102431900B (en) | Control system of bolt mechanism and crane | |
| CN103671364B (en) | Electrohydraulic control system is turned to for remote control loader | |
| CN202833008U (en) | Concrete pump and hydraulic system thereof | |
| CN201841911U (en) | Floating hydraulic mechanism for axle | |
| CN104943669B (en) | High-speed switch valve passive type tramcar brake fluid system | |
| CN104960515A (en) | Active hydraulic brake system of tramcar | |
| CN202108797U (en) | Hydraulic test bed | |
| CN204978623U (en) | Active hydraulic braking system of tram | |
| CN102021927A (en) | Rotary oil supply loop for hydraulic excavator | |
| CN1815040A (en) | Concrete pump hydraulic system auxiliary energy-storage flow-increasing device (2) | |
| CN102926539A (en) | Pumping machinery and emergency driving system thereof | |
| CN102632922A (en) | Dump truck for mine and steering brake control device thereof | |
| CN203582302U (en) | Control valve bank, hydraulic control system and truck crane | |
| CN105000008A (en) | Active tram hydraulic braking system with high speed switch valve | |
| CN108331791A (en) | A kind of hydraulic system released without decompression valve type fork-lift truck stopping brake | |
| CN102926359A (en) | Manual and electric dual-purpose integrated hydraulic hoist | |
| CN103010069A (en) | Electric-hydraulic control system for lifting bucket trolley | |
| CN204821530U (en) | Active tram hydraulic braking system of high speed switch valve | |
| CN204164071U (en) | Trimmer valve, pumping system and concrete mixer | |
| CN204400460U (en) | A kind of hoisting crane and multiway valve hydraulic efficiency pressure system thereof | |
| CN205154780U (en) | Oil pump constant speed control system | |
| CN205059984U (en) | Hydraulic equipment's of boats and ships monitoring device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130925 Termination date: 20140727 |
|
| EXPY | Termination of patent right or utility model |