CN203498899U - Flow control device of hydraulic motor of quartering hammer of excavator - Google Patents
Flow control device of hydraulic motor of quartering hammer of excavator Download PDFInfo
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- CN203498899U CN203498899U CN201320591784.0U CN201320591784U CN203498899U CN 203498899 U CN203498899 U CN 203498899U CN 201320591784 U CN201320591784 U CN 201320591784U CN 203498899 U CN203498899 U CN 203498899U
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Abstract
The utility model discloses a flow control device of a hydraulic motor of a quartering hammer of an excavator. The flow control device comprises a series main hydraulic pump unit, a negative flow main control valve unit, a quartering hammer hydraulic motor unit and a quartering hammer flow control unit, wherein an output terminal of a first main pump is connected with an overflow valve through a position normally open oil port in a first hydraulic reversing valve, and a first oil outlet of the first hydraulic reversing valve leads to the hydraulic motor; an output terminal of a pilot pump is communicated with a first oil port of a shuttle valve successively through a two-position three-way electromagnetic reversing valve and a pressure-reducing valve, and a second oil port of the shuttle valve is communicated with a flow signal oil port of a first main pump flow control valve; and a connecting channel of the two-position three-way electromagnetic reversing valve and the pressure-reducing valve is connected with a pressure signal oil port of the first hydraulic reversing valve, and a connecting channel of the pressure-reducing valve and the shuttle valve is communicated with a pressure sensor. A maximum output flow of the first main pump can be defined according to a rated flow of the hydraulic motor, with different specifications, matched with the quartering hammer, and therefore service lifetime of the hydraulic motor is prolonged.
Description
Technical field
The utility model relates to a kind of hydraulic system of excavator, and 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 work of excavator.
Summary of the invention
The purpose of this utility model is to provide a kind of digging machine disintegrating hammer hydraulic motor flow control device, increases digging machine disintegrating hammer hydraulic motor flow regulating function, the working life that extends hydraulic motor.
The utility model 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.
The purpose of this utility model 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 utility model has been 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 utility model, 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 utility model.
The specific embodiment
Below in conjunction with drawings and Examples, the utility model is described in further detail.
As shown in Figure 1, the utility model comprises 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 utility model 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 utility model is equally applicable to other less important work patterns of excavator.
In addition to the implementation, the utility model 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 the utility model requirement.
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 |
|---|---|---|---|
| CN201320591784.0U CN203498899U (en) | 2013-09-25 | 2013-09-25 | Flow control device of hydraulic motor of quartering hammer of excavator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320591784.0U CN203498899U (en) | 2013-09-25 | 2013-09-25 | Flow control device of hydraulic motor of quartering hammer of excavator |
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| Publication Number | Publication Date |
|---|---|
| CN203498899U true CN203498899U (en) | 2014-03-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320591784.0U Expired - Fee Related CN203498899U (en) | 2013-09-25 | 2013-09-25 | Flow control device of hydraulic motor of quartering hammer of excavator |
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| CN (1) | CN203498899U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103526796A (en) * | 2013-09-25 | 2014-01-22 | 中外合资沃得重工（中国）有限公司 | Excavator breaking hammer hydraulic motor flow control device |
-
2013
- 2013-09-25 CN CN201320591784.0U patent/CN203498899U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103526796A (en) * | 2013-09-25 | 2014-01-22 | 中外合资沃得重工（中国）有限公司 | Excavator breaking hammer hydraulic motor flow control device |
| CN103526796B (en) * | 2013-09-25 | 2015-08-12 | 中外合资沃得重工（中国）有限公司 | Digging machine disintegrating hammer hydraulic motor flow control device |
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Legal Events
| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140326 Termination date: 20160925 |
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| CF01 | Termination of patent right due to non-payment of annual fee |