CN103526796B - Digging machine disintegrating hammer hydraulic motor flow control device - Google Patents
Digging machine disintegrating hammer hydraulic motor flow control device Download PDFInfo
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- CN103526796B CN103526796B CN201310439504.9A CN201310439504A CN103526796B CN 103526796 B CN103526796 B CN 103526796B CN 201310439504 A CN201310439504 A CN 201310439504A CN 103526796 B CN103526796 B CN 103526796B
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Abstract
The invention discloses a kind of digging machine disintegrating hammer hydraulic motor flow control device, comprise series connection Main Hydraulic Pump unit, minus flow main control valve unit, quartering hammer hydraulic motor unit and quartering hammer flow controlling unit, first main pump output is often opened hydraulic fluid port by the first hydraulicchange-over valve meta and is connected with overflow valve, and the first oil-out of the first hydraulicchange-over valve leads to hydraulic motor.Guide's delivery side of pump sequentially passes through two-bit triplet solenoid operated directional valve, reducing valve communicates with shuttle valve first hydraulic fluid port, and shuttle valve second hydraulic fluid port leads to the flow signal hydraulic fluid port of the first main pump flow control valve.Two-bit triplet solenoid operated directional valve is connected with the pressure signal hydraulic fluid port of the first hydraulicchange-over valve with the interface channel of reducing valve, and reducing valve communicates with pressure sensor with the interface channel of shuttle valve.The present invention can limit the corresponding maximum output flow of the first main pump according to the metered flow size of the supporting different size hydraulic motor of quartering hammer, extends the working life of hydraulic motor.
Description
Technical field
The present invention relates to a kind of hydraulic system of excavator, especially a kind of digging machine disintegrating hammer hydraulic power unit, belongs to construction machinery hydraulic system technical field.
Background technology
Excavator except for soil, the cubic meter of stone excavate and transport operation except, carrying out crushing operation with quartering hammer is one of its important use.Existing digging machine disintegrating hammer is mostly user and installs voluntarily, drive the parameter such as the pressure needed for hydraulic motor, flow of quartering hammer work could not to mate with excavator hydraulic system, driver only regulates engine throttle to carry out the quartering hammer striking speed of acquiring demand with personal experience when practical operation.As throttle is adjusted slightly higher, the flow that then main pump exports will substantially exceed the metered flow of quartering hammer hydraulic motor, excessive pulsating flow not only damages the hydraulic unit of excavator, radiator and oil-tank filtering device, add the risk of pipeline leakage, greatly can shorten the working life of destroyer hydraulic motor simultaneously, have a strong impact on the normal work of excavator.
Summary of the invention
The object of this invention is to provide a kind of digging machine disintegrating hammer hydraulic motor flow control device, increase digging machine disintegrating hammer hydraulic motor flow regulating function, extend the working life of hydraulic motor.
The present invention is achieved by the following technical programs:
A kind of digging machine disintegrating hammer hydraulic motor flow control device, comprise series connection Main Hydraulic Pump unit, minus flow main control valve unit, quartering hammer hydraulic motor unit and quartering hammer flow controlling unit, described series connection Main Hydraulic Pump unit comprises the first main pump of series connection, second main pump and pioneer pump, and the first main pump flow control valve, second main pump flow control valve and proportional pressure control valve, described minus flow main control valve unit comprises the first hydraulicchange-over valve, second hydraulicchange-over valve and overflow valve corresponding to each hydraulicchange-over valve, described quartering hammer hydraulic motor unit comprises hydraulic motor and hydraulic motor overflow valve, described quartering hammer flow controlling unit comprises two-bit triplet solenoid operated directional valve, reducing valve, shuttle valve and pressure sensor, first main pump output is often opened hydraulic fluid port by the first hydraulicchange-over valve meta and is connected with overflow valve, and the first oil-out of the first hydraulicchange-over valve leads to hydraulic motor, and leads to hydraulic motor overflow valve, guide's delivery side of pump sequentially passes through two-bit triplet solenoid operated directional valve, reducing valve communicates with shuttle valve first hydraulic fluid port, and shuttle valve second hydraulic fluid port leads to the flow signal hydraulic fluid port of the first main pump flow control valve, and shuttle valve the 3rd hydraulic fluid port leads to overflow valve, two-bit triplet solenoid operated directional valve is connected with the pressure signal hydraulic fluid port of the first hydraulicchange-over valve with the interface channel of reducing valve, and described reducing valve communicates with pressure sensor with the interface channel of shuttle valve.
Object of the present invention can also be realized further by following technical measures.
Aforesaid digging machine disintegrating hammer hydraulic motor flow control device, wherein the pressure regulation spectrum of pressure sensor is 0 ~ 5MPa.
The present invention has set up quartering hammer hydraulic motor flow control device in excavator hydraulic system, make to drive the hydraulic motor flow of quartering hammer hammering can be adjusted, metered flow according to the supporting different size hydraulic motor of quartering hammer varies in size, and limits the corresponding maximum output flow of the first main pump; Even if also do not exceed the metered flow of quartering hammer hydraulic motor when throttle is adjusted very high, extend the working life of hydraulic motor, improve the operating efficiency of excavator.
Advantage and disadvantage of the present invention, by for illustration and explanation for the non-limitative illustration passing through preferred embodiment below, these embodiments, only provide as an example with reference to accompanying drawing.
Accompanying drawing explanation
Fig. 1 is hydraulic schematic diagram of the present invention.
Detailed description of the invention
Below in conjunction with drawings and Examples, the invention will be further described.
As shown in Figure 1, the present invention includes series connection Main Hydraulic Pump unit 1, minus flow main control valve unit 2, quartering hammer hydraulic motor unit 3 and quartering hammer flow controlling unit 4, series connection Main Hydraulic Pump unit 1 comprises the first main pump 11 of series connection, second main pump 12 and pioneer pump 13, and the first main pump flow control valve 14, second main pump flow control valve 15 and proportional pressure control valve 16, minus flow main control valve unit 2 comprises the first hydraulicchange-over valve 21, second hydraulicchange-over valve 22 and overflow valve 23 corresponding to each hydraulicchange-over valve, quartering hammer hydraulic motor unit 3 comprises hydraulic motor 31 and hydraulic motor overflow valve 32, quartering hammer flow controlling unit 4 comprises two-bit triplet solenoid operated directional valve 41, reducing valve 42, shuttle valve 43 and pressure sensor 44.First main pump 11 output is often opened hydraulic fluid port 213 by the first hydraulicchange-over valve 21 meta and is connected with overflow valve 23, and the first oil-out 211 of the first hydraulicchange-over valve 21 leads to hydraulic motor 31, and leads to hydraulic motor overflow valve 32.The output of pioneer pump 13 sequentially passes through two-bit triplet solenoid operated directional valve 41, reducing valve 42 communicates with shuttle valve first hydraulic fluid port 431, the flow signal hydraulic fluid port 141 of the logical first main pump flow control valve 14 of shuttle valve second hydraulic fluid port 432; Two-bit triplet solenoid operated directional valve 41 is connected with the pressure signal hydraulic fluid port 212 of the first hydraulicchange-over valve 21 with the interface channel of reducing valve 42, and reducing valve 42 communicates with pressure sensor 44 with the interface channel of shuttle valve 43.The pressure regulation spectrum of pressure sensor 44 is 0 ~ 5MPa.
The course of work of the present invention is as follows:
When excavator carries out crushing operation, press the broken switch of control crank, two-bit triplet solenoid operated directional valve 41 electricly must commutate to left position, oily the first pressure oil port 411 through two-bit triplet solenoid operated directional valve 41 of the pilot pressure that pioneer pump 13 exports flows to the pressure signal hydraulic fluid port 212 of the first hydraulicchange-over valve 21, promote the first hydraulicchange-over valve 21 and commutate to left position, the hydraulic oil that first main pump 11 exports is through the first oil-out 211 of the first hydraulicchange-over valve 21, enter hydraulic motor 31 and drive quartering hammer work, the operating pressure of hydraulic motor 31 is set up by hydraulic motor overflow valve 32.The first pressure oil port 411 mouthfuls of another road binders of two-bit triplet solenoid operated directional valve 41 flow to reducing valve 42.
The post-decompression pressure of reducing valve 42 monitored by pressure sensor 44, post-decompression pressure oil flows to the flow signal hydraulic fluid port 141 of the first main pump flow control valve 14 through shuttle valve second hydraulic fluid port 432, and this pressure defines the maximum pump discharge of the first main pump 11, i.e. pressure increase, discharge capacity declines, and vice versa.Regulate the pressure of reducing valve 42 according to the displacement size of hydraulic motor 31, the discharge capacity that the first main pump 11 can be made to export is mated with the discharge capacity of hydraulic motor 31, meets the job requirement of broken hammer hydraulic motor unit 3.The present invention is equally applicable to other less important work patterns of excavator.
In addition to the implementation, the present invention can also have other embodiments, and all employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop in the protection domain of application claims.
Claims (2)
1. a digging machine disintegrating hammer hydraulic motor flow control device, comprise series connection Main Hydraulic Pump unit, minus flow main control valve unit and quartering hammer hydraulic motor unit, described series connection Main Hydraulic Pump unit comprises the first main pump of series connection, second main pump and pioneer pump, and the first main pump flow control valve, second main pump flow control valve and proportional pressure control valve, described minus flow main control valve unit comprises the first hydraulicchange-over valve, second hydraulicchange-over valve and overflow valve corresponding to each hydraulicchange-over valve, described quartering hammer hydraulic motor unit comprises hydraulic motor and hydraulic motor overflow valve, the overflow valve that first main pump output often opens hydraulic fluid port corresponding with the first hydraulicchange-over valve by the first hydraulicchange-over valve meta is connected, and the first oil-out of the first hydraulicchange-over valve leads to hydraulic motor, and leads to hydraulic motor overflow valve, it is characterized in that: also comprise quartering hammer flow controlling unit, described quartering hammer flow controlling unit comprises two-bit triplet solenoid operated directional valve, reducing valve, shuttle valve and pressure sensor, guide's delivery side of pump sequentially passes through two-bit triplet solenoid operated directional valve, reducing valve communicates with shuttle valve first hydraulic fluid port, shuttle valve second hydraulic fluid port leads to the flow signal hydraulic fluid port of the first main pump flow control valve, and shuttle valve the 3rd hydraulic fluid port leads to overflow valve corresponding to the first hydraulicchange-over valve, two-bit triplet solenoid operated directional valve is connected with the pressure signal hydraulic fluid port of the first hydraulicchange-over valve with the interface channel of reducing valve, and described reducing valve communicates with pressure sensor with the interface channel of shuttle valve.
2. digging machine disintegrating hammer hydraulic motor flow control device as claimed in claim 1, is characterized in that: the pressure regulation spectrum of described pressure sensor is 0 ~ 5MPa.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310439504.9A CN103526796B (en) | 2013-09-25 | 2013-09-25 | Digging machine disintegrating hammer hydraulic motor flow control device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310439504.9A CN103526796B (en) | 2013-09-25 | 2013-09-25 | Digging machine disintegrating hammer hydraulic motor flow control device |
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| CN103526796A CN103526796A (en) | 2014-01-22 |
| CN103526796B true CN103526796B (en) | 2015-08-12 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103981920B (en) * | 2014-04-14 | 2016-03-23 | 国机重工（常州）挖掘机有限公司 | A kind of excavator hydraulic flow restraint device |
| CN108385766A (en) * | 2018-03-09 | 2018-08-10 | 徐州徐工挖掘机械有限公司 | A kind of broken control system based on positive flow system |
| CN110005013B (en) * | 2019-05-06 | 2024-02-27 | 徐州徐工挖掘机械有限公司 | Crushing and oil-saving control system and method for excavator and excavator |
| CN112012268B (en) * | 2019-05-28 | 2023-02-28 | 山东临工工程机械有限公司 | Double-pump confluence hydraulic system and excavator |
| CN112177095A (en) * | 2020-11-02 | 2021-01-05 | 山东临工工程机械有限公司 | Hydraulic energy supply system and excavator |
| CN114215797B (en) * | 2021-11-15 | 2024-04-19 | 中船华南船舶机械有限公司 | Method for controlling flow of variable pump by hydraulic system |
Citations (3)
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|---|---|---|---|---|
| CN102071714A (en) * | 2010-12-09 | 2011-05-25 | 三一重机有限公司 | Method and device for controlling expansion of hydraulic circuit of excavator |
| JP2012229777A (en) * | 2011-04-27 | 2012-11-22 | Yuken Kogyo Co Ltd | Hydraulic circuit for raising/lowering boom cylinder |
| CN203498899U (en) * | 2013-09-25 | 2014-03-26 | 中外合资沃得重工（中国）有限公司 | Flow control device of hydraulic motor of quartering hammer of excavator |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FI118134B (en) * | 2001-10-19 | 2007-07-13 | Sandvik Tamrock Oy | Rock drilling device and breaking device |
| KR101032731B1 (en) * | 2009-06-02 | 2011-05-06 | 볼보 컨스트럭션 이큅먼트 에이비 | Excavator with hammer device |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102071714A (en) * | 2010-12-09 | 2011-05-25 | 三一重机有限公司 | Method and device for controlling expansion of hydraulic circuit of excavator |
| JP2012229777A (en) * | 2011-04-27 | 2012-11-22 | Yuken Kogyo Co Ltd | Hydraulic circuit for raising/lowering boom cylinder |
| CN203498899U (en) * | 2013-09-25 | 2014-03-26 | 中外合资沃得重工（中国）有限公司 | Flow control device of hydraulic motor of quartering hammer of excavator |
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Application publication date: 20140122 Assignee: JIANGSU ZHENJI MACHINERY MANUFACTURING Co.,Ltd. Assignor: SINO-FOREIGN JOINT VENTURE WORLD HEAVY INDUSTRY (CHINA) Co.,Ltd. Contract record no.: X2023320000082 Denomination of invention: Hydraulic motor flow control device of excavator crusher Granted publication date: 20150812 License type: Common License Record date: 20230206 |
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