CN102108865B - Hydraulic system of coal mining machine - Google Patents
Hydraulic system of coal mining machine Download PDFInfo
- Publication number
- CN102108865B CN102108865B CN201110000776XA CN201110000776A CN102108865B CN 102108865 B CN102108865 B CN 102108865B CN 201110000776X A CN201110000776X A CN 201110000776XA CN 201110000776 A CN201110000776 A CN 201110000776A CN 102108865 B CN102108865 B CN 102108865B
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- way reversing
- pump
- mining machine
- hydraulic system
- valve
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Abstract
The invention discloses a hydraulic system of a coal mining machine, which mainly comprises an oil tank, a variable pump, a variable mechanism, a four-way reversing valve, a hydraulic executing element, an auxiliary gear pump, three-way reversing valves, an overflow valve and a cooler, wherein one end of the variable pump is connected with the oil tank by a pipeline through an oil absorbing and filtering device. The hydraulic system of the coal mining machine provided by the invention has good power adaptability, and the output of the pump is dependent on the load requirement of the machine, so that power waste is effectively reduced. Additionally, with the integrated multi-way valve, the improvement of output pressure of the system is further facilitated, power weight ratio can be further improved, the electro-hydraulic proportion is controlled, and the control accuracy for an open-pit coal mining machine is further improved. Two three-way reversing valves are mounted in the hydraulic system, so that temperature of the oil can be adjusted with the variation of seasons, and the oil is prevented from being overheated.
Description
Technical field
The present invention relates to a kind of hydraulic system, relate in particular to a kind of hydraulic system of strip coal mining machine.
Background technique
Many open coal mines many places of China are remote area in the region, and environment is more abominable, and season, the temperature difference and region difference variation were bigger, and hydraulic system is because of the specific (special) requirements of its working medium, and the serviceability temperature of fluid is had very crucial requirement.In addition, itself also is in the starting stage strip coal mining machine, and the design of self also belongs to the slowly optimizing phase, and original hydraulic system adopts simple throttling speed control circuit, and loop element relatively disperses, inefficiency, leak high, level of integration is low.
Summary of the invention
The objective of the invention is to solve the variation of temperature that to conform, have that power-weight ratio is big, through-current capacity big, leakage is low, efficient is high, level of integration is high and functional characteristics such as load-sensitive, a kind of coal-mining machine hydraulic system is provided.
The technological scheme that the present invention solves its technical problem is:
A kind of coal-mining machine hydraulic system; Mainly form by fuel tank, variable displacement pump, stroking mechanism, four way reversing valves, hydraulic actuator, auxiliary gear pump, two-bit triplet selector valve, relief valve and cooler; It is characterized in that: variable displacement pump one end is connected with fuel tank through pipeline through the oil suction oil purifier, and the other end inserts four way reversing valves through stroking mechanism; Four way reversing valve load sensing circuits are connected with stroking mechanism; Stroking mechanism link variable pump, the actuator port of the every plate valve of four way reversing valves connects hydraulic actuator respectively, and auxiliary circuit fluid connects cooler and relief valve respectively after auxiliary gear pump connects the two-bit triplet selector valve.
The invention has the beneficial effects as follows:
1, the present invention has good power adaptive function; The output of pump decides according to the loading demand of machine; Reduced power dissipation effectively, in addition owing to adopted integrated multi-way valve, the raising of the system that is more convenient for delivery pressure; Can improve power-weight ratio, electric-hydraulic proportion control makes the control accuracy of strip coal mining machine obtain raising further.
2, the present invention has installed the two-bit triplet selector valve, can regulate the oil temperature according to the variation of seasonal temperature, prevents that the oil temperature is too high or too low.
3, the circuit pressure of each executive component can be set respectively in each plate valve of multi-way valve of the present invention, can work alone between each valve, and not receive interference separately.The flow of oil pump is regulated according to the requirement of whole system, has significantly improved working efficiency.
Description of drawings
Fig. 1 is coal-mining machine hydraulic system figure of the present invention
Mode of execution
Among Fig. 1; A kind of coal-mining machine hydraulic system; Mainly form by fuel tank 1, variable displacement pump 2, stroking mechanism 3, four way reversing valves 4, hydraulic actuator 5, auxiliary gear pump 6, two-bit triplet selector valve 7, relief valve 8 and cooler 9; It is characterized in that: variable displacement pump 2 one ends are connected with fuel tank 1 through pipeline through the oil suction oil purifier, and the other end inserts four way reversing valves 4 through stroking mechanism 3; Four way reversing valves, 4 load sensing circuits are connected with stroking mechanism 3; The actuator port of stroking mechanism 3 link variable pumps 2, four way reversing valves 4 every plate valves connects hydraulic actuator 5 respectively, and auxiliary circuit fluid connects cooler 9 and relief valve 8 respectively after auxiliary gear pump 6 connects two-bit triplet selector valve 7.
Working principle: variable displacement pump 2 one ends are connected with fuel tank 1 through pipeline through the oil suction oil purifier; The other end is through the stroking mechanism 3 of pump; The stroking mechanism 3 that gets into four way reversing valve 4, four way reversing valves, 4 load sensing circuits and pump is connected, the stroking mechanism 3 link variable pumps 2 of pump; The actuator port branch of four way reversing valves, 4 every plate valves adds and connects hydraulic actuator 5, and auxiliary circuit fluid connects cooler 9 and relief valve 8 respectively after auxiliary gear pump 6 connects two-bit triplet selector valve 7.When ambient temperature too low, pump start difficulty time, the oil outlet of two-bit triplet selector valve 7 is transferred to the oil circuit of relief valve 8, the high pressurized overflow of fluid produces heat, and fluid is heated; The summer environment temperature is high, and is too high for preventing the oil temperature during work, adopts cooler 9 loops, reduces the oil temperature.
Claims (1)
1. coal-mining machine hydraulic system; Mainly form by fuel tank (1), variable displacement pump (2), stroking mechanism (3), four way reversing valves (4), hydraulic actuator (5), auxiliary gear pump (6), two-bit triplet selector valve (7), relief valve (8) and cooler (9); It is characterized in that: variable displacement pump (2) one ends are connected with fuel tank (1) through pipeline through the oil suction oil purifier; The other end is through stroking mechanism (3); Insert four way reversing valves (4), four way reversing valves (4) load sensing circuit is connected with stroking mechanism (3), stroking mechanism (3) link variable pump (2); The actuator port of the every plate valve of four way reversing valves (4) connects hydraulic actuator (5) respectively, and auxiliary circuit fluid connects cooler (9) and relief valve (8) respectively after auxiliary gear pump (6) connects two-bit triplet selector valve (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110000776XA CN102108865B (en) | 2011-01-05 | 2011-01-05 | Hydraulic system of coal mining machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110000776XA CN102108865B (en) | 2011-01-05 | 2011-01-05 | Hydraulic system of coal mining machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102108865A CN102108865A (en) | 2011-06-29 |
| CN102108865B true CN102108865B (en) | 2012-07-18 |
Family
ID=44173136
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110000776XA Expired - Fee Related CN102108865B (en) | 2011-01-05 | 2011-01-05 | Hydraulic system of coal mining machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102108865B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102720710B (en) * | 2012-06-26 | 2015-09-16 | 中联重科股份有限公司 | The controlling method of hydraulic system, hydraulic system and engineering machinery |
| CN104533856B (en) * | 2014-11-13 | 2016-05-11 | 中国矿业大学 | Full-hydraulic drill type coal mining machine hydraulic control system |
| CN104594891B (en) * | 2014-12-31 | 2018-01-16 | 太重煤机有限公司 | Broken hammer hydraulic shock coal-winning machine |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2060794B (en) * | 1979-10-09 | 1983-11-30 | Minsup Mining Supplies | Mining machine and gearbox |
| GB2098645B (en) * | 1981-05-15 | 1984-12-19 | Pitcraft Summit Ltd | Mining machine |
| CN201065761Y (en) * | 2007-04-20 | 2008-05-28 | 枣庄矿业(集团)有限责任公司 | Coal cutter hydraulic control drive device |
| CN201428454Y (en) * | 2009-06-16 | 2010-03-24 | 辽源煤矿机械制造有限责任公司 | Low coal seam coal cutter capable of cutting ferric sulfide concretion |
| CN101881165B (en) * | 2010-06-29 | 2012-05-23 | 太原矿山机器集团有限公司 | Coal-mining machine hydraulic system |
| CN201982093U (en) * | 2011-01-05 | 2011-09-21 | 河北天择重型机械有限公司 | Hydraulic system of coal mining machine |
-
2011
- 2011-01-05 CN CN201110000776XA patent/CN102108865B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN102108865A (en) | 2011-06-29 |
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Granted publication date: 20120718 Termination date: 20160105 |
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