CN103526796A - Excavator breaking hammer hydraulic motor flow control device - Google Patents
Excavator breaking hammer hydraulic motor flow control device Download PDFInfo
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- CN103526796A CN103526796A CN201310439504.9A CN201310439504A CN103526796A CN 103526796 A CN103526796 A CN 103526796A CN 201310439504 A CN201310439504 A CN 201310439504A CN 103526796 A CN103526796 A CN 103526796A
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Abstract
The invention discloses an excavator breaking hammer hydraulic motor flow control device which comprises a main hydraulic pump unit, a negative flow master control valve unit, a breaking hammer hydraulic motor unit and a breaking hammer flow control unit, wherein the main hydraulic pump unit, the negative flow master control valve unit, the breaking hammer hydraulic motor unit and the breaking hammer flow control unit are in series connection. The output end of a first main pump is connected with an overflow valve through a neutral-position normally open oil port of a first hydraulic change-over valve. A first oil outlet of the first hydraulic change-over valve is communicated to a hydraulic motor. The output end of a pilot pump is communicated with a first oil port of a shuttle valve through a two-position three-way magnetic exchange valve and a pressure reducing valve in sequence. A second oil port of the shuttle valve is communicated with a flow signal oil port of a flow control valve of the first main pump. A connection channel of the two-position three-way magnetic exchange valve and the pressure reducing valve is connected with a pressure signal oil port of the first hydraulic change-over valve. A connection channel of the pressure reducing valve and the shuttle valve is communicated with a pressure sensor. By means of the excavator breaking hammer hydraulic motor flow control device, the corresponding maximum output flow of the first main pump can be limited according to the rated flow of hydraulic motors with different specifications matched with a breaking hammer, and therefore the service life of the hydraulic motors is prolonged.
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, with quartering hammer, carrying out crushing operation is one of its important use.Existing digging machine disintegrating hammer is mostly user and installs voluntarily, drive the parameters such as the required pressure of the hydraulic motor of quartering hammer work, flow 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 highlyer, the flow of main pump output will substantially exceed the metered flow of quartering hammer hydraulic motor, excessive pulsating flow not only damages hydraulic unit, radiator and the oil-tank filtering device of excavator, increased the risk of pipeline leakage, can greatly shorten the working life of destroyer hydraulic motor simultaneously, have a strong impact on the normal operation 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, the working life that extends 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, the second main pump and pioneer pump, and the first main pump flow control valve, the second main pump flow control valve and proportional pressure control valve, described minus flow main control valve unit comprises the first hydraulicchange-over valve, the 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, the 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 communicates with shuttle valve the first hydraulic fluid port by two-bit triplet solenoid operated directional valve, reducing valve in turn, the flow signal hydraulic fluid port of logical the first main pump flow control valve of shuttle valve the second hydraulic fluid port, and shuttle valve the 3rd hydraulic fluid port leads to overflow valve, two-bit triplet solenoid operated directional valve is connected with the interface channel of reducing valve and the pressure signal hydraulic fluid port of the first hydraulicchange-over valve, and described reducing valve communicates with pressure sensor with the interface channel of shuttle valve.
Object of the present invention can also further realize by following technical measures.
Aforesaid digging machine disintegrating hammer hydraulic motor flow control device, wherein the pressure adjustable range 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, according to the metered flow of the supporting different size hydraulic motor of quartering hammer, vary in size, limit 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 highly, the working life that has extended hydraulic motor, has improved the operating efficiency of excavator.
Advantage and disadvantage of the present invention, the non-limitative illustration by preferred embodiment below is for illustration and explanation, and these embodiment, only provide as an example with reference to accompanying drawing.
Accompanying drawing explanation
Fig. 1 is hydraulic schematic diagram of the present invention.
The specific embodiment
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, the second main pump 12 and pioneer pump 13, and the first main pump flow control valve 14, the 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, the 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.The first main pump 11 outputs are often opened hydraulic fluid port 213 by the first hydraulicchange-over valve 21 metas and are 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 communicates with shuttle valve the first hydraulic fluid port 431 by two-bit triplet solenoid operated directional valve 41, reducing valve 42 in turn, the flow signal hydraulic fluid port 141 of shuttle valve second hydraulic fluid port 432 logical the first main pump flow control valves 14; 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 adjustable range 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 obtains the electric left position that commutates to, the pilot pressure oil of pioneer pump 13 outputs flows to the pressure signal hydraulic fluid port 212 of the first hydraulicchange-over valve 21 through the first pressure hydraulic fluid port 411 of two-bit triplet solenoid operated directional valve 41, promote the first hydraulicchange-over valve 21 and commutate to left position, the hydraulic oil of the first main pump 11 outputs 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 32.411 mouthfuls of another road binders of the first pressure hydraulic fluid port of two-bit triplet solenoid operated directional valve 41 flow to reducing valve 42.
The post-decompression pressure of pressure sensor 44 monitoring reducing valve 42, 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 the second hydraulic fluid port 432, this pressure defines the maximum pump discharge of the first main pump 11, i.e. pressure rise, discharge capacity declines, and vice versa.According to the displacement size of hydraulic motor 31, regulate the pressure of reducing valve 42, can make the discharge capacity of the first main pump 11 outputs mate with the discharge capacity of hydraulic motor 31, meet 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 requirement of the present invention.
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, the second main pump and pioneer pump, and the first main pump flow control valve, the second main pump flow control valve and proportional pressure control valve, described minus flow main control valve unit comprises the first hydraulicchange-over valve, the 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 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, 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 communicates with shuttle valve the first hydraulic fluid port by two-bit triplet solenoid operated directional valve, reducing valve in turn, the flow signal hydraulic fluid port of logical the first main pump flow control valve of shuttle valve the second hydraulic fluid port, shuttle valve the 3rd hydraulic fluid port leads to overflow valve, two-bit triplet solenoid operated directional valve is connected with the interface channel of reducing valve and the pressure signal hydraulic fluid port of the first hydraulicchange-over 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 adjustable range of described pressure sensor is 0～5MPa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| 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 |
|---|---|---|---|
| CN201310439504.9A CN103526796B (en) | 2013-09-25 | 2013-09-25 | Digging machine disintegrating hammer hydraulic motor flow control device |
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| CN103526796A true CN103526796A (en) | 2014-01-22 |
| CN103526796B CN103526796B (en) | 2015-08-12 |
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| CN201310439504.9A Active CN103526796B (en) | 2013-09-25 | 2013-09-25 | Digging machine disintegrating hammer hydraulic motor flow control device |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103981920A (en) * | 2014-04-14 | 2014-08-13 | 国机重工（常州）挖掘机有限公司 | Hydraulic flow restriction device for excavator |
| 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 |
| CN110005013A (en) * | 2019-05-06 | 2019-07-12 | 徐州徐工挖掘机械有限公司 | A kind of excavation crusher machine fuel-saving control system, control method and excavator |
| CN112012268A (en) * | 2019-05-28 | 2020-12-01 | 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 |
| CN114215797A (en) * | 2021-11-15 | 2022-03-22 | 中船华南船舶机械有限公司 | Method for controlling flow of variable pump by hydraulic system |
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| US20040194985A1 (en) * | 2001-10-19 | 2004-10-07 | Sandvik Tamrock Oy | Rock drilling rig and rock breaking machine |
| KR20100130034A (en) * | 2009-06-02 | 2010-12-10 | 볼보 컨스트럭션 이큅먼트 에이비 | Excavator with hammer device |
| 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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2013
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040194985A1 (en) * | 2001-10-19 | 2004-10-07 | Sandvik Tamrock Oy | Rock drilling rig and rock breaking machine |
| KR20100130034A (en) * | 2009-06-02 | 2010-12-10 | 볼보 컨스트럭션 이큅먼트 에이비 | Excavator with hammer device |
| 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 |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103981920A (en) * | 2014-04-14 | 2014-08-13 | 国机重工（常州）挖掘机有限公司 | Hydraulic flow restriction device for excavator |
| 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 |
| CN110005013A (en) * | 2019-05-06 | 2019-07-12 | 徐州徐工挖掘机械有限公司 | A kind of excavation crusher machine fuel-saving control system, control method and excavator |
| 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 |
| CN112012268A (en) * | 2019-05-28 | 2020-12-01 | 山东临工工程机械有限公司 | Double-pump confluence hydraulic system 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 |
| CN114215797A (en) * | 2021-11-15 | 2022-03-22 | 中船华南船舶机械有限公司 | Method for controlling flow of variable pump by hydraulic system |
| 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 |
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| CN103526796B (en) | 2015-08-12 |
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| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
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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| EE01 | Entry into force of recordation of patent licensing contract |