CN204851825U - Quick -witted pilot control valve group is rammed by force to hydraulic pressure crawler -type - Google Patents

Quick -witted pilot control valve group is rammed by force to hydraulic pressure crawler -type Download PDF

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Publication number
CN204851825U
CN204851825U CN201520542936.7U CN201520542936U CN204851825U CN 204851825 U CN204851825 U CN 204851825U CN 201520542936 U CN201520542936 U CN 201520542936U CN 204851825 U CN204851825 U CN 204851825U
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China
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hydraulic fluid
fluid port
control valve
directional control
solenoid directional
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CN201520542936.7U
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Chinese (zh)
Inventor
王伟
马玉皓
文金选
仝文欢
张�成
李贵强
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Zhengzhou Yutong Heavy Industry Co Ltd
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Zhengzhou Yutong Heavy Industry Co Ltd
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Abstract

The utility model discloses a quick -witted pilot control valve group is rammed by force to hydraulic pressure crawler -type, which comprises the following components: a valve body, the first hydraulic fluid port MP0 of setting on the valve body, second hydraulic fluid port P, third hydraulic fluid port MP1, fourth hydraulic fluid port T, the 5th hydraulic fluid port MP, the 6th hydraulic fluid port P1, the 7th hydraulic fluid port P2, the 8th hydraulic fluid port P3, the 9th hydraulic fluid port P4, the tenth hydraulic fluid port P0, the 11 hydraulic fluid port T0, a pressure stop valve for setting for main system pressure, lie in a magenetic exchange valve of the different positions of valves, the 2nd magenetic exchange valve, the 3rd magenetic exchange valve, fourth magenetic exchange valve and the 5th magenetic exchange valve, an energy storage ware for mending oil, and stabilize the relief pressure valve of guide's delivery pressure. The utility model discloses a set up the pressure stop valve in the valves, can clutch cracking pressure value set pressure, play the pressure release consumption reduction at work and act on. Through setting up energy storage ware volume and the charged pressure in the valves, satisfy the benefit oil demand under each operating mode. Through setting up the relief pressure valve in the valves, can provide stable guide's pressure source.

Description

A kind of hydraulic crawler dynamic compaction machinery pilot-actuated valve group
Technical field
The utility model belongs to crawler belt type dynamic compaction machine technical field, is specifically related to a kind of hydraulic crawler dynamic compaction machinery pilot-actuated valve group.
Background technique
In hydraulic crawler dynamic compaction machinery, generally because master winch clutch cracking pressure is high, use the pressure of pilot control system can not meet the unlocking condition of free off the hook clutch, most domestic manufacturers designs the operation that a set of control oil sources carries out free off the hook in addition.On market, hydraulic crawler dynamic compaction machinery pilot control system substantially all adopts the fixed dilivery hydraulic system of gear pump simultaneously, pilot pressure setting is undertaken by simple relief valve, make in motor different rotating speeds downforce fluctuation ratio larger, tractor driver operates comfort sense difference, and there is certain energy ezpenditure in normal work.
Summary of the invention
For deficiency existing in above-mentioned prior art, the utility model provides a kind of hydraulic crawler dynamic compaction machinery pilot-actuated valve group, this pilot-actuated valve group can use with the hydraulic track dynamic compaction machinery coupling of most domestic manufacturers exploitation, meets the safety operation of hydraulic track dynamic compaction machinery and performance requirement.
The purpose of this utility model realizes in the following manner:
A kind of hydraulic crawler dynamic compaction machinery pilot-actuated valve group, comprise valve body, be arranged on the first hydraulic fluid port MP0 on valve body, second hydraulic fluid port P, 3rd hydraulic fluid port MP1, 4th hydraulic fluid port T, 5th hydraulic fluid port MP, 6th hydraulic fluid port P1, 7th hydraulic fluid port P2, 8th hydraulic fluid port P3, 9th hydraulic fluid port P4, tenth hydraulic fluid port P0, 11 hydraulic fluid port T0, for setting the pressure stop valve of main system pressure, be positioned at the first solenoid directional control valve of valve group diverse location, second solenoid directional control valve, 3rd solenoid directional control valve, 4th solenoid directional control valve and the 5th solenoid directional control valve, for the accumulator of repairing, and the reduction valve of stable guide's delivery pressure,
Wherein, the hydraulic fluid port I of described pressure stop valve communicates with the first hydraulic fluid port MP0 and the second hydraulic fluid port P, the hydraulic fluid port II of pressure stop valve communicates with the hydraulic fluid port I of the first solenoid directional control valve, and the hydraulic fluid port III of pressure stop valve leads to the hydraulic fluid port III of the first solenoid directional control valve and the 4th hydraulic fluid port T-phase;
The hydraulic fluid port IV of described first solenoid directional control valve communicates with the hydraulic fluid port I of accumulator, the 5th hydraulic fluid port MP, the hydraulic fluid port I of the second solenoid directional control valve and the hydraulic fluid port I of reduction valve, and the hydraulic fluid port III of the hydraulic fluid port II of the first solenoid directional control valve and the hydraulic fluid port II of the second solenoid directional control valve, reduction valve, the hydraulic fluid port II of the 3rd solenoid directional control valve, the hydraulic fluid port II of the 4th solenoid directional control valve, the hydraulic fluid port II of the 5th solenoid directional control valve and the 11 hydraulic fluid port T0 communicate;
The hydraulic fluid port IV of described second solenoid directional control valve communicates with the 6th hydraulic fluid port P1;
The hydraulic fluid port II of described reduction valve communicates with the hydraulic fluid port I of the hydraulic fluid port I of the 3rd solenoid directional control valve, the 4th solenoid directional control valve, the hydraulic fluid port I of the 5th solenoid directional control valve and the tenth hydraulic fluid port P0;
The hydraulic fluid port IV of described 3rd solenoid directional control valve communicates with the 7th hydraulic fluid port P2;
The hydraulic fluid port IV of described 4th solenoid directional control valve communicates with the 8th hydraulic fluid port P3;
The hydraulic fluid port IV of described 5th solenoid directional control valve communicates with the 9th hydraulic fluid port P4;
The hydraulic fluid port III of described second solenoid directional control valve, the hydraulic fluid port III of the 3rd solenoid directional control valve, the hydraulic fluid port III of the 4th solenoid directional control valve, hydraulic fluid port III shutoff of the 5th solenoid directional control valve.
First solenoid directional control valve, the second solenoid directional control valve, the 3rd solenoid directional control valve, the 4th solenoid directional control valve are the solenoid directional control valve that 5 structures are identical with the 5th solenoid directional control valve.
Relative to prior art, the beneficial effects of the utility model are as follows:
1, by arranging the pressure stop valve in valve group, can clutch cracking pressure value setting pressure, play the effect of pressure release consumption reduction at work.
2, by arranging accumulator volume in valve group and inflation pressure, the repairing demand under each operating mode is met.
3, by arranging the reduction valve in valve group, stable pilot pressure source can be provided.
4, by the first solenoid directional control valve in operating valve group, safety operation and the performance requirement of hydraulic crawler running mechanism is met.
5, by various function i ntegration being had compact structure, regulable control conveniently together, avoid external hydraulic pipe line to expose and damage advantages such as reducing leakage of oil risk.
Accompanying drawing explanation
Fig. 1 is principle schematic of the present utility model.
Fig. 2 is application principle schematic diagram of the present utility model.
Wherein, 1 is pressure stop valve; 2.1 is first solenoid directional control valves; 2.2 is second solenoid directional control valves; 2.3 is the 3rd solenoid directional control valves; 2.4 is the 4th solenoid directional control valves; 2.5 is the 5th solenoid directional control valves; 3 is accumulators; 4 is reduction valve.
Embodiment
As shown in accompanying drawing 1-2, a kind of hydraulic crawler dynamic compaction machinery pilot-actuated valve group, comprise valve body, be arranged on the first hydraulic fluid port MP0 on valve body, second hydraulic fluid port P, 3rd hydraulic fluid port MP1, 4th hydraulic fluid port T, 5th hydraulic fluid port MP, 6th hydraulic fluid port P1, 7th hydraulic fluid port (P2), 8th hydraulic fluid port P3, 9th hydraulic fluid port P4, tenth hydraulic fluid port P0, 11 hydraulic fluid port T0, for setting the pressure stop valve 1 of main system pressure, be positioned at the first solenoid directional control valve 2.1 of valve group diverse location, second solenoid directional control valve 2.2, 3rd solenoid directional control valve 2.3, 4th solenoid directional control valve 2.4 and the 5th solenoid directional control valve 2.5, for the accumulator 3 of repairing, and the reduction valve 4 of stable guide's delivery pressure,
Wherein, the hydraulic fluid port I of described pressure stop valve 1 communicates with the first hydraulic fluid port MP0 and the second hydraulic fluid port P, the hydraulic fluid port II of pressure stop valve 1 communicates with the hydraulic fluid port I of the first solenoid directional control valve 2.1, and the hydraulic fluid port III of pressure stop valve 1 leads to the hydraulic fluid port III of the first solenoid directional control valve 2.1 and the 4th hydraulic fluid port T-phase;
The hydraulic fluid port IV of described first solenoid directional control valve 2.1 communicates with the hydraulic fluid port I of accumulator 3, the 5th hydraulic fluid port MP, the hydraulic fluid port I of the second solenoid directional control valve 2.2 and the hydraulic fluid port I of reduction valve 4, and the hydraulic fluid port III of the hydraulic fluid port II of the first solenoid directional control valve 2.1 and the hydraulic fluid port II of the second solenoid directional control valve 2.2, reduction valve 4, the hydraulic fluid port II of the 3rd solenoid directional control valve 2.3, the hydraulic fluid port II of the 4th solenoid directional control valve 2.4, the hydraulic fluid port II of the 5th solenoid directional control valve 2.5 and the 11 hydraulic fluid port T0 communicate;
The hydraulic fluid port IV of described second solenoid directional control valve 2.2 communicates with the 6th hydraulic fluid port P1;
The hydraulic fluid port II of described reduction valve 4 communicates with the hydraulic fluid port I of the hydraulic fluid port I of the 3rd solenoid directional control valve 2.3, the 4th solenoid directional control valve 2.4, the hydraulic fluid port I of the 5th solenoid directional control valve 2.5 and the tenth hydraulic fluid port P0;
The hydraulic fluid port IV of described 3rd solenoid directional control valve 2.3 communicates with the 7th hydraulic fluid port P2;
The hydraulic fluid port IV of described 4th solenoid directional control valve 2.4 communicates with the 8th hydraulic fluid port P3;
The hydraulic fluid port IV of described 5th solenoid directional control valve 2.5 communicates with the 9th hydraulic fluid port P4;
The hydraulic fluid port III of described second solenoid directional control valve 2.2, the hydraulic fluid port III of the 3rd solenoid directional control valve 2.3, the hydraulic fluid port III of the 4th solenoid directional control valve 2.4, hydraulic fluid port III shutoff of the 5th solenoid directional control valve 2.5.
First solenoid directional control valve 2.1, second solenoid directional control valve 2.2, the 3rd solenoid directional control valve 2.3, the 4th solenoid directional control valve 2.4 are the solenoid directional control valve that 5 structures are identical with the 5th solenoid directional control valve 2.5.
Working procedure of the present utility model is as follows: before pilot-actuated valve uses, the working pressure of the first solenoid directional control valve 2.1 and the second solenoid directional control valve 2.2 is set by pressure stop valve 1, this value and clutch cracking pressure are equipped with, and the working pressure of the second solenoid directional control valve 2.2 is higher.
When the switch of pilot-actuated valve group cuts out, metering pump is through the second hydraulic fluid port P oil circuit oil-feed, and oil circuit is by pressure stop valve 1 and the first solenoid directional control valve 2.1 oil sump tank; When the switch opens of pilot-actuated valve group, the star guide work of pilot-actuated valve group, first solenoid directional control valve 2.1 commutates, and oil circuit to accumulator 3 topping up, makes each solenoid directional control valve standby through reduction valve 4 by pressure stop valve 1 and the first solenoid directional control valve 2.1 simultaneously.Through the oil circuit of reduction valve 4 to the 3rd solenoid directional control valve 2.3, the 4th solenoid directional control valve 2.4 and the 5th solenoid directional control valve 2.5 fuel feeding, simultaneously through the tenth hydraulic fluid port P0 to other operating device for pressurization after stable pressure oil-source.After each action of main frame is in steady state, fluid no longer outwards supplies, and now due to the effect of pressure stop valve 1, makes the pressure release of system zero load, reach energy-conservation object after pressure reaches setting value.
Relative to prior art, the beneficial effects of the utility model are as follows:
1, by arranging the pressure stop valve in valve group, can clutch cracking pressure value setting pressure, play the effect of pressure release consumption reduction at work.
2, by arranging accumulator volume in valve group and inflation pressure, the repairing demand under each operating mode is met.
3, by arranging the reduction valve in valve group, stable pilot pressure source can be provided.
4, by the first solenoid directional control valve in operating valve group, safety operation and the performance requirement of hydraulic crawler running mechanism is met.
5, by various function i ntegration being had compact structure, regulable control conveniently together, avoid external hydraulic pipe line to expose and damage advantages such as reducing leakage of oil risk.
Above-described is only preferred implementation of the present utility model; it should be pointed out that for a person skilled in the art, do not departing under the utility model general idea prerequisite; can also make some changes and improvements, these also should be considered as protection domain of the present utility model.

Claims (2)

1. a hydraulic crawler dynamic compaction machinery pilot-actuated valve group, it is characterized in that: comprise valve body, be arranged on the first hydraulic fluid port (MP0) on valve body, second hydraulic fluid port (P), 3rd hydraulic fluid port (MP1), 4th hydraulic fluid port (T), 5th hydraulic fluid port (MP), 6th hydraulic fluid port (P1), 7th hydraulic fluid port (P2), 8th hydraulic fluid port (P3), 9th hydraulic fluid port (P4), tenth hydraulic fluid port (P0), 11 hydraulic fluid port (T0), for setting the pressure stop valve (1) of main system pressure, be positioned at first solenoid directional control valve (2.1) of valve group diverse location, second solenoid directional control valve (2.2), 3rd solenoid directional control valve (2.3), 4th solenoid directional control valve (2.4) and the 5th solenoid directional control valve (2.5), for the accumulator (3) of repairing, and the reduction valve (4) of stable guide's delivery pressure,
Wherein, the hydraulic fluid port I of described pressure stop valve (1) communicates with the first hydraulic fluid port (MP0) and the second hydraulic fluid port (P), the hydraulic fluid port II of pressure stop valve (1) communicates with the hydraulic fluid port I of the first solenoid directional control valve (2.1), and the hydraulic fluid port III of pressure stop valve (1) communicates with the hydraulic fluid port III of the first solenoid directional control valve (2.1) and the 4th hydraulic fluid port (T);
The hydraulic fluid port IV of described first solenoid directional control valve (2.1) communicates with the hydraulic fluid port I of accumulator (3), the 5th hydraulic fluid port (MP), the hydraulic fluid port I of the second solenoid directional control valve (2.2) and the hydraulic fluid port I of reduction valve (4), and the hydraulic fluid port III of the hydraulic fluid port II of the first solenoid directional control valve (2.1) and the hydraulic fluid port II of the second solenoid directional control valve (2.2), reduction valve (4), the hydraulic fluid port II of the 3rd solenoid directional control valve (2.3), the hydraulic fluid port II of the 4th solenoid directional control valve (2.4), the hydraulic fluid port II of the 5th solenoid directional control valve (2.5) and the 11 hydraulic fluid port (T0) communicate;
The hydraulic fluid port IV of described second solenoid directional control valve (2.2) communicates with the 6th hydraulic fluid port (P1);
The hydraulic fluid port II of described reduction valve (4) communicates with the hydraulic fluid port I of the hydraulic fluid port I of the 3rd solenoid directional control valve (2.3), the 4th solenoid directional control valve (2.4), the hydraulic fluid port I of the 5th solenoid directional control valve (2.5) and the tenth hydraulic fluid port (P0);
The hydraulic fluid port IV of described 3rd solenoid directional control valve (2.3) communicates with the 7th hydraulic fluid port (P2);
The hydraulic fluid port IV of described 4th solenoid directional control valve (2.4) communicates with the 8th hydraulic fluid port (P3);
The hydraulic fluid port IV of described 5th solenoid directional control valve (2.5) communicates with the 9th hydraulic fluid port (P4);
The hydraulic fluid port III of described second solenoid directional control valve (2.2), the hydraulic fluid port III of the 3rd solenoid directional control valve (2.3), the hydraulic fluid port III of the 4th solenoid directional control valve (2.4), hydraulic fluid port III shutoff of the 5th solenoid directional control valve (2.5).
2. hydraulic crawler dynamic compaction machinery pilot-actuated valve group according to claim 1, is characterized in that: the first solenoid directional control valve (2.1), the second solenoid directional control valve (2.2), the 3rd solenoid directional control valve (2.3), the 4th solenoid directional control valve (2.4) are the solenoid directional control valve that 5 structures are identical with the 5th solenoid directional control valve (2.5).
CN201520542936.7U 2015-07-24 2015-07-24 Quick -witted pilot control valve group is rammed by force to hydraulic pressure crawler -type Active CN204851825U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201520542936.7U CN204851825U (en) 2015-07-24 2015-07-24 Quick -witted pilot control valve group is rammed by force to hydraulic pressure crawler -type

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Application Number Priority Date Filing Date Title
CN201520542936.7U CN204851825U (en) 2015-07-24 2015-07-24 Quick -witted pilot control valve group is rammed by force to hydraulic pressure crawler -type

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105650048A (en) * 2016-03-04 2016-06-08 柳州柳工液压件有限公司 Pilot control valve group
CN109026858A (en) * 2018-10-26 2018-12-18 北京中车重工机械有限公司 The hydraulic control device and dynamic compaction machinery of the free off the hook hoist engine of dynamic compaction machinery

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105650048A (en) * 2016-03-04 2016-06-08 柳州柳工液压件有限公司 Pilot control valve group
CN109026858A (en) * 2018-10-26 2018-12-18 北京中车重工机械有限公司 The hydraulic control device and dynamic compaction machinery of the free off the hook hoist engine of dynamic compaction machinery

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