CN204628143U - A kind of hydraulic system controlling spreading machine material conveying - Google Patents
A kind of hydraulic system controlling spreading machine material conveying Download PDFInfo
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- CN204628143U CN204628143U CN201520107852.0U CN201520107852U CN204628143U CN 204628143 U CN204628143 U CN 204628143U CN 201520107852 U CN201520107852 U CN 201520107852U CN 204628143 U CN204628143 U CN 204628143U
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Abstract
Control a hydraulic system for spreading machine material conveying, it is characterized in that: be made up of the first oil-way system and the second oil-way system, two oil-way systems share fuel tank T; Described first oil-way system, oil sources P is connected with the import of the first solenoid directional control valve, two outlets of the first solenoid directional control valve are connected with the first oil hydraulic motor, the outlet of the first solenoid directional control valve is connected with fuel tank T, first relief valve, the first pilot operated directional control valve are connected in the entrance and exit two ends of the first solenoid directional control valve in parallel, and the first pressure-compensated valve is connected in parallel on the entrance and exit two ends of the first solenoid directional control valve after connecting with first flow modulating valve; Described second oil circuit and the first oil circuit are except oil sources is different, and Placement is just the same.The design not only can realize the clockwise and anticlockwise function of feeder; And effectively can absorb conveying and to get stuck the system pressure impact brought; And according to system requirements, effectively delivery rate can be regulated by the manual tune of flow or electric proportion adjustment.
Description
Technical field
The design relates to a kind of hydraulic system controlling spreading machine material conveying, belongs to engineering machinery hydraulic technical field.
Background technique
At present, material transferring system for spreading machine adopts hydraulic system mostly, because it controls simple, easy to use, and feeder reversion can be driven to automatically terminate conveying clamping stagnation problem because the various factors in construction causes by the Reverse Turning Control of hydraulic system, thus obtain the favor of users.
Although existing spreading machine material conveying hydraulic system can change by the adjustment of hydraulicdirectional control valve the clockwise and anticlockwise function that the forward and reverse driving of oil hydraulic pump to oil hydraulic motor realizes conveying, but during the Block failure of paver if there is feeder in normal construction, system pressure overshoot can be there is in hydraulic system because of the unexpected stopping of feeder, especially when paving basic unit road surface, this catching phenomenon can seem particularly serious, thus cause component in conveying control system as oil hydraulic pump, motor, control valve, the continuous impact of material-conveying belt, affect the working life of conveying control system.Another kind of situation, for multifunctional spreading machine when different construction operating modes, can require that different delivery rates and sub-material ability match.But conveying hydraulic system is all digital output modul usually at present, cannot realize the adjustment to speed; Or prior art adoption rate control realization delivery rate regulates, but existing proportional control technique can increase system cost greatly.
The patent No. be 201020518474.2 Chinese utility model patent disclose a kind of hydraulic pressure installation controlling spreading machine material conveying clockwise and anticlockwise, the clockwise and anticlockwise function realizing conveying is changed in the position that the technical characteristics of this hydraulic pressure installation remains simply by three position four-way directional control valve, security of system protection is used for by common relief valve restriction system pressure, but this system but cannot regulate delivery rate, system pressure impact that the Block failure because of feeder brings also cannot be avoided the impact of lifetime of system.
Summary of the invention
For the deficiencies in the prior art, when the object of this invention is to provide a kind of feeder generation Block failure, can eliminate system pressure overshoot, protection compression shock is on the impact of conveying system; And further provide a kind of according to difference construction operating mode, effectively can regulate delivery rate by the manual tune of flow or electric proportion adjustment mode.
For achieving the above object, the design is realized by following technological means:
Control a hydraulic system for spreading machine material conveying, it is characterized in that: be made up of the first oil-way system and the second oil-way system, described first oil-way system and the second oil-way system are connected to fuel tank T by same drainback passage;
Described first oil-way system is made up of oil sources P, fuel tank T, the first relief valve, the first pilot operated directional control valve, first flow modulating valve, the first pressure-compensated valve, the first solenoid directional control valve, the first oil hydraulic motor;
Described second oil-way system by oil sources P', fuel tank T, the second relief valve, the second pilot operated directional control valve, second adjustable valve, the second pressure-compensated valve, the second solenoid directional control valve and, the second oil hydraulic motor forms;
Described first oil-way system, oil sources P is connected with the import of the first solenoid directional control valve, two outlets of the first solenoid directional control valve are connected with the first oil hydraulic motor, the outlet of the first solenoid directional control valve is connected with fuel tank T, first relief valve, the first pilot operated directional control valve are connected in the entrance and exit two ends of the first solenoid directional control valve in parallel, and the first pressure-compensated valve is connected in parallel on the entrance and exit two ends of the first solenoid directional control valve after connecting with first flow modulating valve;
Described second oil-way system, oil sources P' is connected with the import of the second solenoid directional control valve, two outlets of the second solenoid directional control valve are connected with the second oil hydraulic motor, the outlet of the second solenoid directional control valve is connected with fuel tank T, second relief valve, the second pilot operated directional control valve are connected in the entrance and exit two ends of the second solenoid directional control valve in parallel, and the second pressure-compensated valve is connected in parallel on the entrance and exit two ends of the second solenoid directional control valve after connecting with second adjustable valve.
Further:
Described a kind of hydraulic system controlling spreading machine material conveying, is characterized in that: described first flow modulating valve, second adjustable valve are electric proportional throttle valve.
Described a kind of hydraulic system controlling spreading machine material conveying, is characterized in that: described first flow modulating valve, second adjustable valve are manual adjustable throttle valve.
Described a kind of hydraulic system controlling spreading machine material conveying, is characterized in that: described first pilot operated directional control valve, the second pilot operated directional control valve one-way valve that to be its normal orientation be with repairing function, commutation position is the throttle valve with throttling function.
Described a kind of hydraulic system controlling spreading machine material conveying, is characterized in that: the commutation pressure of described first pilot operated directional control valve, the second pilot operated directional control valve is respectively lower than the setting pressure of described first relief valve, the second relief valve.
Described a kind of hydraulic system controlling spreading machine material conveying, is characterized in that: the three-position four-way electromagnetic directional valve of described first solenoid directional control valve, the second solenoid directional control valve to be Median Function be H type.
The invention has the beneficial effects as follows: the design not only can realize the clockwise and anticlockwise function of feeder; And effectively can absorb conveying and to get stuck the system pressure impact brought; And according to system requirements, effectively delivery rate can be regulated by the manual tune of flow or electric proportion adjustment.
Accompanying drawing explanation
Fig. 1 is hydraulic schematic diagram of the present invention.
Reference character implication is as follows: 1, the first relief valve; 2, the first pilot operated directional control valve; 3, first flow modulating valve; 4, the first pressure-compensated valve; 5, the first solenoid directional control valve; 6, the first oil hydraulic motor; 7, the second oil hydraulic motor; 8, the second solenoid directional control valve; 9, the second pressure-compensated valve; 10, second adjustable valve; 11, the second pilot operated directional control valve; 12, the second relief valve.
Embodiment
Below in conjunction with Figure of description, design is further described.
As shown in Figure 1, native system forms primarily of two-way oil-way system.Described second oil circuit and the first oil circuit are except oil sources is different, and Placement is just the same.The entrance of the first relief valve 1, first pilot operated directional control valve 2 in described first oil-way system is all connected with oil sources P, and outlet is all connected with fuel tank T; 1. the control mouth of the first pressure-compensated valve 4 is connected with oil sources P, and 3. the entrance of the first pressure-compensated valve 4 is connected with the outlet of first flow modulating valve 3, and 2. the outlet of the first pressure-compensated valve 4 connects with fuel tank T-phase, and the entrance of first flow modulating valve 3 is connected with oil sources P; The entrance P1 of the first solenoid directional control valve 5 is connected with oil sources P, and outlet A1, B1 of the first solenoid directional control valve 5 are connected with the first oil hydraulic motor 6, and the T1 that answers back of the first solenoid directional control valve 5 is connected with fuel tank T-phase.
Two outlets of the second solenoid directional control valve 8 in described second oil-way system are connected 7 with the second oil hydraulic motor, and the entrance of the second relief valve 12, second pilot operated directional control valve 11 is all connected with oil sources P', and outlet is all connected with fuel tank T; The control mouth of the second pressure-compensated valve 9 is connected with oil sources P', and the entrance of the second pressure-compensated valve 9 is connected with the outlet of second adjustable valve 10, and the outlet of the second pressure-compensated valve 9 and fuel tank T-phase connect, and the entrance of second adjustable valve 10 is connected with oil sources P'; The entrance of the second solenoid directional control valve 8 is connected with oil sources P', and the outlet of the second solenoid directional control valve 8 is connected with the second oil hydraulic motor 7, and answering back of the second solenoid directional control valve 8 is connected with fuel tank T-phase.
Further:
Described a kind of hydraulic system controlling spreading machine material conveying, is characterized in that: described first flow modulating valve 3, second adjustable valve 10 are electric proportional throttle valve.
Described a kind of hydraulic system controlling spreading machine material conveying, is characterized in that: described first flow modulating valve 3, second adjustable valve 10 are manual adjustable throttle valve.
Described a kind of hydraulic system controlling spreading machine material conveying, is characterized in that: described first pilot operated directional control valve 2, second pilot operated directional control valve 11 for its normal orientation be the one-way valve with repairing function, commutation position is the throttle valve with throttling function.
Described a kind of hydraulic system controlling spreading machine material conveying, is characterized in that: the commutation pressure of described first pilot operated directional control valve 2, second pilot operated directional control valve 11 is respectively lower than the setting pressure of described first relief valve 1, second relief valve 12.
Commutation pressure can be set to about 90% of corresponding relief valve set pressure.
Described a kind of hydraulic system controlling spreading machine material conveying, is characterized in that: described first solenoid directional control valve 5, second solenoid directional control valve 8 for Median Function be the three-position four-way electromagnetic directional valve of H type.
Its working principle is: the first oil-way system drives the first oil hydraulic motor of left feeder to complete corresponding function by oil sources P; Second oil-way system drives the second oil hydraulic motor of right feeder to complete corresponding function by oil sources P'.Because two kinds of oil-way system working principles are just the same, be now described for the first oil-way system: when the first solenoid directional control valve 5 no electric circuit makes valve be in meta, hydraulic system off-load, the first oil hydraulic motor 6 does not rotate, and system does not work; When the electromagnet Y1 of the first solenoid directional control valve 5 obtain electric make valve be in left position time, hydraulic system sets up pressure, first oil hydraulic motor 6 rotates forward, if when occurring that pressure oil circuit is inhaled empty at work, can carry out repairing by the one-way valve in its normal orientation of pilot operated directional control valve 2; When occurring getting stuck fault in feeder working procedure, pilot operated directional control valve 2 can be opened in relief valve 1 in advance according to the rising of system pressure, and pressure overshoot sponges by the throttling arrangement through pilot operated directional control valve 2, when pressure continues to rise, relief valve 1 is opened, by oil sources off-load, for the protection of system; When the electromagnet Y2 of the first solenoid directional control valve 5 obtain electric make valve be in right position time, hydraulic system sets up pressure, and the first oil hydraulic motor 6 reverses, and to get stuck fault for removing; When needs regulate delivery rate, can be regulated by flow control valve 3 pairs of flow system flows, due to the effect of pressure-compensated valve, flow system flow can regulate accurately.
By the realization of above technological scheme, just can control oil sources by first, second solenoid directional control valve and drive oil hydraulic motor to realize clockwise and anticlockwise; And when feeder occurs getting stuck fault, first, second pilot operated directional control valve can be opened in first, second relief valve in advance according to the rising of system pressure, pressure overshoot sponges by the throttling arrangement through first, second pilot operated directional control valve, when pressure continues to rise, first, second relief valve is opened, by oil sources off-load, for the protection of system; If when needing to regulate delivery rate, can, according to the consideration of the factor such as performance and cost, select electric proportional throttle valve or manual tune throttle valve to regulate flow system flow.
By practical proof, the conveying hydraulic system in the present invention, not only can realize the clockwise and anticlockwise function of feeder; And effectively can absorb conveying and to get stuck the system pressure impact brought; And according to system requirements, effectively delivery rate can be regulated by the manual tune of flow or electric proportion adjustment; This Dynamic System is simple, and diverse in function, is particularly useful for the spreading machine material conveying hydraulic system of the multiple operating mode that paves.
More than show and describe the basic principle of the design, major character and advantage.The technician of the industry should understand; the design is not restricted to the described embodiments; the principle that the design is just described described in above-described embodiment and specification; under the prerequisite not departing from the design's spirit and scope; the design also has various changes and modifications, and these changes and improvements all fall within the scope of claimed the design.The claimed scope of the design is defined by appending claims and equivalent thereof.
Claims (6)
1. control a hydraulic system for spreading machine material conveying, it is characterized in that: be made up of the first oil-way system and the second oil-way system, described first oil-way system and the second oil-way system are connected to fuel tank T by same drainback passage;
Described first oil-way system is made up of oil sources P, fuel tank T, the first relief valve, the first pilot operated directional control valve, first flow modulating valve, the first pressure-compensated valve, the first solenoid directional control valve, the first oil hydraulic motor;
Described second oil-way system by oil sources P', fuel tank T, the second relief valve, the second pilot operated directional control valve, second adjustable valve, the second pressure-compensated valve, the second solenoid directional control valve and, the second oil hydraulic motor forms;
Described first oil-way system, oil sources P is connected with the import of the first solenoid directional control valve, two outlets of the first solenoid directional control valve are connected with the first oil hydraulic motor, the outlet of the first solenoid directional control valve is connected with fuel tank T, first relief valve, the first pilot operated directional control valve are connected in the entrance and exit two ends of the first solenoid directional control valve in parallel, and the first pressure-compensated valve is connected in parallel on the entrance and exit two ends of the first solenoid directional control valve after connecting with first flow modulating valve;
Described second oil-way system, oil sources P' is connected with the import of the second solenoid directional control valve, two outlets of the second solenoid directional control valve are connected with the second oil hydraulic motor, the outlet of the second solenoid directional control valve is connected with fuel tank T, second relief valve, the second pilot operated directional control valve are connected in the entrance and exit two ends of the second solenoid directional control valve in parallel, and the second pressure-compensated valve is connected in parallel on the entrance and exit two ends of the second solenoid directional control valve after connecting with second adjustable valve.
2. a kind of hydraulic system controlling spreading machine material conveying as claimed in claim 1, is characterized in that: described first flow modulating valve, second adjustable valve are electric proportional throttle valve.
3. a kind of hydraulic system controlling spreading machine material conveying as claimed in claim 1, is characterized in that: described first flow modulating valve, second adjustable valve are manual adjustable throttle valve.
4. a kind of hydraulic system controlling spreading machine material conveying as claimed in claim 1, it is characterized in that: described first pilot operated directional control valve, the second pilot operated directional control valve one-way valve that to be its normal orientation be with repairing function, commutation position is the throttle valve with throttling function.
5. a kind of hydraulic system controlling spreading machine material conveying as claimed in claim 1, is characterized in that: the commutation pressure of described first pilot operated directional control valve, the second pilot operated directional control valve is respectively lower than the setting pressure of described first relief valve, the second relief valve.
6. a kind of hydraulic system controlling spreading machine material conveying as claimed in claim 1, is characterized in that: the three-position four-way electromagnetic directional valve of described first solenoid directional control valve, the second solenoid directional control valve to be Median Function be H type.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520107852.0U CN204628143U (en) | 2015-02-15 | 2015-02-15 | A kind of hydraulic system controlling spreading machine material conveying |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520107852.0U CN204628143U (en) | 2015-02-15 | 2015-02-15 | A kind of hydraulic system controlling spreading machine material conveying |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108317119A (en) * | 2018-04-09 | 2018-07-24 | 徐州燕大传动与控制技术有限公司 | A kind of proportional multi-way valve that hydraulic control inlet and outlet throttling side can be separately adjustable |
| CN108412829A (en) * | 2018-04-09 | 2018-08-17 | 徐州燕大传动与控制技术有限公司 | A kind of separately adjustable load-sensitive formula multi-way valve of inlet and outlet throttling side energy |
| WO2023035794A1 (en) * | 2021-09-07 | 2023-03-16 | 徐州徐工挖掘机械有限公司 | Hydraulic system for rotary machine tool |
-
2015
- 2015-02-15 CN CN201520107852.0U patent/CN204628143U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108317119A (en) * | 2018-04-09 | 2018-07-24 | 徐州燕大传动与控制技术有限公司 | A kind of proportional multi-way valve that hydraulic control inlet and outlet throttling side can be separately adjustable |
| CN108412829A (en) * | 2018-04-09 | 2018-08-17 | 徐州燕大传动与控制技术有限公司 | A kind of separately adjustable load-sensitive formula multi-way valve of inlet and outlet throttling side energy |
| CN108412829B (en) * | 2018-04-09 | 2022-02-11 | 徐州燕大传动与控制技术有限公司 | Load sensitive type multi-way valve with independently adjustable inlet and outlet throttling edges |
| WO2023035794A1 (en) * | 2021-09-07 | 2023-03-16 | 徐州徐工挖掘机械有限公司 | Hydraulic system for rotary machine tool |
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