CN203548393U - Auxiliary hydraulic system and concrete pumping equipment - Google Patents
Auxiliary hydraulic system and concrete pumping equipment Download PDFInfo
- Publication number
- CN203548393U CN203548393U CN201320589298.5U CN201320589298U CN203548393U CN 203548393 U CN203548393 U CN 203548393U CN 201320589298 U CN201320589298 U CN 201320589298U CN 203548393 U CN203548393 U CN 203548393U
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- China
- Prior art keywords
- selector valve
- hydraulic fluid
- valve
- hydraulic system
- motor
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/38—Control of exclusively fluid gearing
- F16H61/40—Control of exclusively fluid gearing hydrostatic
- F16H61/44—Control of exclusively fluid gearing hydrostatic with more than one pump or motor in operation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B15/00—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts
- F04B15/02—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts the fluids being viscous or non-homogeneous
Abstract
The utility model discloses an auxiliary hydraulic system and concrete pumping equipment. The auxiliary hydraulic system comprises a main oil pump, a stirring motor, a washing motor, a first reversing valve and a second reversing valve, wherein an oil suction opening of the main oil pump is connected to an oil tank; an oil outlet of the main oil pump is connected to an oil inlet of the first reversing valve; a first working oil opening and a second working oil opening of the first reversing valve are respectively connected to two oil openings of the stirring motor; an oil return opening of the first reversing valve is connected to an oil inlet of the second reversing valve; a first selectable oil outlet and a second selectable oil outlet of the second reversing valve are respectively connected to a first oil opening of the washing motor and the oil tank; and a second oil opening of the washing motor is connected to the oil tank. By using the auxiliary hydraulic system, stirring and washing can be carried out simultaneously. The concrete pumping equipment is provided with the auxiliary hydraulic system.
Description
Technical field
The utility model relates to auxiliary hydraulic system technical field, particularly a kind of auxiliary hydraulic system and concrete pumping equipment.
Background technique
The hydraulic system of engineering machinery is generally divided into main hydraulic system and auxiliary hydraulic system, wherein, auxiliary hydraulic system mainly completes the back work of the cooling grade of hydraulic oil, for example, the work such as that the auxiliary hydraulic system of concrete pumping equipment mainly completes is cooling, stirring, washing, at present, the level of integration of this auxiliary hydraulic system is higher, generally in an independent hydraulically controlled loop, can realize the work such as cooling, stirring and washing.
As shown in Figure 1, the existing auxiliary hydraulic system for concrete pumping equipment comprise main oil pump 1 ', cooling motor 2 ', selector valve 3 ', relief valve 4 ', selector valve 5 ', relief valve 6 ', selector valve 7 ', stirring motor 8 ', stop valve 9 ', washing motor 10 ' and relief valve 11 ' etc. composition.Wherein, by change selector valve 3 ' state, can control cooling motor 2 ' action, to select whether to open refrigerating function; By change selector valve 5 ' state, can pilot pressure oil supplying direction, to select to open agitating function or water scrub function; Selector valve 7 ' for control stirring motor 8 ' clockwise and anticlockwise; The stop valve 9 of washing motor 10 ' entrance ' for closing when the washing motor 10 ' do not work, with prevent water wash motor 10 ' two ends produce pressure reduction and reverse; Relief valve 4 ', 6 ' and 11 ' be respectively used to protect cooling motor 2 ', stirring motor 8 ' and washing motor 10 '.
In such scheme, agitating function and water scrub function cannot carry out simultaneously; In addition, need stop valve be set in the ingress of washing motor, increase cost; In addition, if a certain motor and corresponding relief valve thereof damage while blocking, main oil pump easily damages.
Therefore, how for existing auxiliary hydraulic system, improving, further to adapt to using needs, is those skilled in the art's technical problems urgently to be resolved hurrily.
Model utility content
In view of this, one of the purpose of this utility model is to provide a kind of auxiliary hydraulic system, and water scrub function and agitating function can be carried out simultaneously.Another object of the present utility model is to provide a kind of concrete pumping equipment.
Particularly, auxiliary hydraulic system of the present utility model comprises main oil pump, stirring motor, washing motor, the first selector valve and the second selector valve, wherein: the inlet port of described main oil pump is connected to fuel tank, the oil outlet of described main oil pump is connected to the filler opening of described the first selector valve, the first actuator port of described the first selector valve and the second actuator port are connected to respectively two hydraulic fluid ports of described stirring motor, the return opening of described the first selector valve is connected to the filler opening of described the second selector valve, the first optional oil outlet of described the second selector valve and the second optional oil outlet are connected to respectively the first hydraulic fluid port and the fuel tank of described washing motor, the second hydraulic fluid port of described washing motor is connected to fuel tank, or, the inlet port of described main oil pump is connected to fuel tank, the oil outlet of described main oil pump is connected to the filler opening of described the second selector valve, the first optional oil outlet of described the second selector valve and the second optional oil outlet are connected to respectively the first hydraulic fluid port of described washing motor and the filler opening of described the first selector valve, the second hydraulic fluid port of described washing motor is connected to the filler opening of described the first selector valve, the first actuator port of described the first selector valve and the second actuator port are connected to respectively two hydraulic fluid ports of described stirring motor, and the return opening of described the first selector valve is connected to fuel tank.
Further, described the first selector valve is that Median Function is the three-position four-way valve of M type or H type.
Further, described the second selector valve is two-position three-way valve.
Further, described auxiliary hydraulic system also comprises the first relief valve, and the filler opening of described the first relief valve is connected to the first hydraulic fluid port of described washing motor, and the flow-off of described the first relief valve is connected to the second hydraulic fluid port of described washing motor.
Further, described auxiliary hydraulic system also comprises the cooling motor and the 3rd selector valve that are arranged between the oil outlet of described main oil pump and the filler opening of described the first selector valve; The first hydraulic fluid port of described cooling motor is connected to the oil outlet of described main oil pump, and the second hydraulic fluid port of described cooling motor is connected to the filler opening of described the first selector valve; Described the 3rd selector valve is switch valve, and two hydraulic fluid port is connected to respectively the first hydraulic fluid port and second hydraulic fluid port of described cooling motor; Or described auxiliary hydraulic system also comprises the cooling motor and the 3rd selector valve that are arranged between the oil outlet of described main oil pump and the filler opening of described the second selector valve; The first hydraulic fluid port of described cooling motor is connected to the oil outlet of described main oil pump, and the second hydraulic fluid port of described cooling motor is connected to the filler opening of described the second selector valve; Described the 3rd selector valve is switch valve, and two hydraulic fluid port is connected to respectively the first hydraulic fluid port and second hydraulic fluid port of described cooling motor.
Further, described auxiliary hydraulic system also comprises the second relief valve, and the filler opening of described the second relief valve is connected to the first hydraulic fluid port of described cooling motor, and the flow-off of described the second relief valve is connected to the second hydraulic fluid port of described cooling motor.
Further, each selector valve is solenoid valve.
Further, described auxiliary hydraulic system also comprises the 3rd relief valve, and the filler opening of described the 3rd relief valve is connected to the oil outlet of described main oil pump, and the flow-off of described the 3rd relief valve is connected to fuel tank.
Concrete pumping equipment of the present utility model arranges the auxiliary hydraulic system described in above-mentioned any one.
Further, this concrete pumping equipment is concrete mixer.
While adopting auxiliary hydraulic system of the present utility model, by controlling the state of the second selector valve, can pilot pressure oil successively through stirring motor and washing motor or successively through washing motor and stirring motor, realize when stirring action and washing action and carrying out.
In further a kind of scheme, first selector valve adopt Median Function be the three-position four-way valve of M type or H type, can realize like this stirring motor and washing motor one of them work independently or two work simultaneously.
In further a kind of scheme, auxiliary hydraulic system also comprises cooling motor and the 3rd selector valve, one of them that can realize like this three motors work independently or wherein two work simultaneously or three work simultaneously.
In further a kind of scheme, the oil outlet of main oil pump is provided with the 3rd relief valve, can avoid like this main oil pump to damage while blocking and cross and damage because of pressure at certain motor and corresponding relief valve thereof, improves the working life of main oil pump.
Concrete pumping equipment of the present utility model is provided with above-mentioned auxiliary hydraulic system, and because above-mentioned auxiliary hydraulic system has above-mentioned technique effect, thereby this concrete pumping equipment also has corresponding technique effect.
Accompanying drawing explanation
The accompanying drawing that forms a part of the present utility model is used to provide further understanding of the present utility model, and schematic description and description of the present utility model is used for explaining the utility model, does not form improper restriction of the present utility model.
Fig. 1 is the principle schematic of existing a kind of auxiliary hydraulic system for concrete pumping equipment;
The principle schematic of a kind of auxiliary hydraulic system that Fig. 2 provides for the utility model embodiment.
Primary component symbol description:
1 main oil pump
2 the 3rd relief valves
3 cooling motors
4 the 3rd selector valves
5 second relief valves
6 first selector valves
7 stirring motors
8 second selector valves
9 washing motors
10 first relief valves
Embodiment
It should be pointed out that in this part, the description to concrete structure and description order is only the explanation to specific embodiment, should not be considered as that protection domain of the present utility model is had to any restriction.In addition,, under the situation of not conflicting, the feature in embodiment and embodiment in this part can combine mutually.
Please refer to Fig. 2, below in conjunction with accompanying drawing, the utility model embodiment is elaborated.
As shown in Figure 2, this embodiment's auxiliary hydraulic system comprises main oil pump 1, cooling motor 3, stirring motor 7, washing motor 9, the first selector valve 6, the second selector valve 8 and the 3rd selector valve 4.
Wherein, the filler opening of main oil pump 1 is connected to fuel tank, and the oil outlet of main oil pump 1 is connected to the filler opening of cooling motor 3, and the oil outlet of cooling motor 3 is connected to the oil inlet P of the first selector valve 6; The 3rd selector valve 4 is switch valve, and preferably, in the present embodiment, the 3rd selector valve 4 is 2/2-way valve, and two hydraulic fluid ports of the 3rd selector valve 4 are connected to respectively oil outlet and the filler opening of cooling motor 3.
The first actuator port A of the first selector valve 6 and the second actuator port B are connected to respectively two hydraulic fluid ports of stirring motor 7, and the oil return inlet T of the first selector valve 6 is connected to the filler opening of the second selector valve 8; In the present embodiment, the preferred Median Function of the first selector valve 6 is the three-position four-way valve of H type, the first selector valve 6 has three kinds of working staties, in the first working state (left position), oil inlet P communicates with the first actuator port A, oil return inlet T communicates with the second actuator port B, in the second working state (right position), oil inlet P communicates with the second actuator port B, oil return inlet T communicates with the first actuator port A, in the 3rd working state (meta), oil inlet P, the first actuator port A, the second actuator port B and oil return inlet T all communicate.
The first optional oil outlet of the second selector valve 8 is connected to the first hydraulic fluid port of washing motor 9, and the second optional oil outlet of the second selector valve 8 is connected to fuel tank, and the second hydraulic fluid port of washing motor 9 is connected to fuel tank; In the present embodiment, the preferred two-position three-way valve of the second selector valve 8, the second selector valve 8 has two kinds of working staties, the first working state (upper), the filler opening of the second selector valve 8 communicates with the second optional oil outlet, and the first optional oil outlet cut-off, in the second working state (the next), the filler opening of the second selector valve 8 communicates with the first optional oil outlet, the second optional oil outlet cut-off.
In the course of the work, main oil pump 1 supply pressure oil, if control the 3rd selector valve 4 in closed condition, cooling motor 3 moves, auxiliary hydraulic system has refrigerating function; If control the first selector valve 6 in left position or right position, stirring motor 7 forwards or reversion, auxiliary hydraulic system also has agitating function; If control the second selector valve 8 in the next, washing motor 9 moves, and auxiliary hydraulic system also has water scrub function; To be that auxiliary hydraulic system can have simultaneously cooling, stirring and water scrub function.If control the 3rd selector valve 4 in opening state, the first selector valve 6 is in left or right position, and the second selector valve 8 is in the next, and auxiliary hydraulic system can have stirring and water scrub function simultaneously.If control the 3rd selector valve 4 in opening state, the first selector valve 6 is in left or right position, and the second selector valve 8 is in upper, and now, in each motor, only stirring motor moves, and auxiliary hydraulic system only has agitating function.The like, can draw, by controlling the state of each selector valve, can make three motors one of them work independently or wherein two work simultaneously or three work simultaneously, thereby make auxiliary hydraulic system dealing with various requirements.
In specific implementation process, the auxiliary hydraulic system of above-described embodiment can also be done following at least one optimization:
One, the first selector valve 6, the second selector valve 8 and the 3rd selector valve 4 all adopt solenoid valve, as shown in Figure 2, like this can by control the electromagnetic coil DT2 of electromagnetic coil DT1, the first selector valve 6 of the 3rd selector valve 4 and DT3, the second selector valve 8 electromagnetic coil DT4 power failure state, to change the working position of each selector valve, it is convenient, simple to operate to control.
Two, in order to protect washing motor 9, avoiding washing motor 9 damages because oil pressure is excessive, it can be washing motor 9 one first relief valve 10 in parallel, the filler opening of the first relief valve 10 is connected to the first hydraulic fluid port of washing motor 9, and the flow-off of the first relief valve 10 is connected to second hydraulic fluid port (being connected to fuel tank) of washing motor 9; In order to protect cooling motor 3, avoid cooling motor 3 to damage because oil pressure is excessive, can be cooling motor 3 one second relief valve 5 in parallel, the filler opening of the second relief valve 5 be connected to the first hydraulic fluid port of cooling motor 3, and the flow-off of the second relief valve 5 is connected to cooling motor 3 second hydraulic fluid ports; For fear of main oil pump 1, at certain motor and corresponding relief valve thereof, damage while blocking and cross and damage because of pressure, improve the working life of main oil pump 1, can be equipped with one the 3rd relief valve 2 by main oil pump 1, the filler opening of the 3rd relief valve 2 is connected to the oil outlet of main oil pump 1, and the flow-off of the 3rd relief valve 2 is connected to fuel tank.
It should be noted that, in above-described embodiment, cooling motor 3, the oil outlet that stirring motor 7 and washing motor 9 and corresponding selector valve are successively set on main oil pump 1 is to the oil circuit of fuel tank, but in other embodiments, the erection sequence of each part mentioned above can be exchanged, for example, washing motor 9 and the second selector valve 8 can be arranged between the filler opening of the first selector valve 6 and the second hydraulic fluid port of cooling motor 3, the filler opening of the second selector valve 8 is connected to the second hydraulic fluid port of cooling motor 3, washing the second hydraulic fluid port of motor 9 and the second optional oil outlet of the second selector valve 8 are connected to the oil inlet P of the first selector valve 6, so setting also can realize corresponding function of the present utility model.
It should be noted that, in above-mentioned various embodiments, auxiliary hydraulic system can have stirring, washing and refrigerating function, but in other embodiments, also can only have and stir and water scrub function, omit cooling motor 3 and the 3rd selector valve 4, so also can realize corresponding function of the present utility model.
It should be noted that, in above-mentioned various embodiments, the preferred Median Function of the first selector valve 6 is the three-position four-way valve of H type, but in other embodiments, also can adopt Median Function is the three-position four-way valve of M type, further, can also adopt other forms of selector valve, as long as can realize the clockwise and anticlockwise of stirring motor (in the first working state, P mouth leads to A mouth, and T mouth leads to B mouth, in the second working state, P mouth leads to B mouth, and T mouth leads to A mouth).In addition, in above-mentioned various embodiments, the preferred two-position three-way valve of the second selector valve 8, but in other embodiments, also can adopt other forms, as long as can realize its filler opening, be optionally communicated in its first optional oil outlet or the second optional oil outlet.
The utility model is other embodiments also provide a kind of concrete pumping equipment, and as concrete mixer, this concrete pumping equipment is provided with the auxiliary hydraulic system described in above-described embodiment.Because above-mentioned auxiliary hydraulic system has above-mentioned technique effect, therefore, this concrete pumping equipment also should possess corresponding technique effect, the specific implementation process of its appropriate section is similar to the above embodiments, the specific implementation process of other parts can, referring to the associated description of prior art, hereby not repeat.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.
Claims (10)
1. an auxiliary hydraulic system, is characterized in that, comprises main oil pump (1), stirring motor (7), washing motor (9), the first selector valve (6) and the second selector valve (8), wherein:
The inlet port of described main oil pump (1) is connected to fuel tank, the oil outlet of described main oil pump (1) is connected to the filler opening (P) of described the first selector valve (6), first actuator port (A) of described the first selector valve (6) and the second actuator port (B) are connected to respectively two hydraulic fluid ports of described stirring motor (7), the return opening (T) of described the first selector valve (6) is connected to the filler opening of described the second selector valve (8), the first optional oil outlet of described the second selector valve (8) and the second optional oil outlet are connected to respectively the first hydraulic fluid port and the fuel tank of described washing motor (9), the second hydraulic fluid port of described washing motor (9) is connected to fuel tank,
Or
The inlet port of described main oil pump (1) is connected to fuel tank, the oil outlet of described main oil pump (1) is connected to the filler opening of described the second selector valve (8), the first optional oil outlet of described the second selector valve (8) and the second optional oil outlet are connected to respectively the first hydraulic fluid port of described washing motor (9) and the filler opening (P) of described the first selector valve (6), the second hydraulic fluid port of described washing motor (9) is connected to the filler opening (P) of described the first selector valve (6), first actuator port (A) of described the first selector valve (6) and the second actuator port (B) are connected to respectively two hydraulic fluid ports of described stirring motor (7), the return opening (T) of described the first selector valve (6) is connected to fuel tank.
2. auxiliary hydraulic system as claimed in claim 1, is characterized in that, described the first selector valve (6) for Median Function be the three-position four-way valve of M type or H type.
3. auxiliary hydraulic system as claimed in claim 1, is characterized in that, described the second selector valve (8) is two-position three-way valve.
4. auxiliary hydraulic system as claimed in claim 1, it is characterized in that, described auxiliary hydraulic system also comprises the first relief valve (10), the filler opening of described the first relief valve (10) is connected to the first hydraulic fluid port of described washing motor (9), and the flow-off of described the first relief valve (10) is connected to the second hydraulic fluid port of described washing motor (9).
5. the auxiliary hydraulic system as described in claim 1 to 4 any one, it is characterized in that, described auxiliary hydraulic system also comprises the cooling motor (3) and the 3rd selector valve (4) that are arranged between the oil outlet of described main oil pump (1) and the filler opening of described the first selector valve (6); The first hydraulic fluid port of described cooling motor (3) is connected to the oil outlet of described main oil pump (1), and the second hydraulic fluid port of described cooling motor (3) is connected to the filler opening of described the first selector valve (6); Described the 3rd selector valve (4) is switch valve, and two hydraulic fluid port is connected to respectively the first hydraulic fluid port and second hydraulic fluid port of described cooling motor (3);
Or
Described auxiliary hydraulic system also comprises the cooling motor (3) and the 3rd selector valve (4) that are arranged between the oil outlet of described main oil pump (1) and the filler opening of described the second selector valve (8); The first hydraulic fluid port of described cooling motor (3) is connected to the oil outlet of described main oil pump (1), and the second hydraulic fluid port of described cooling motor (3) is connected to the filler opening of described the second selector valve (8); Described the 3rd selector valve (4) is switch valve, and two hydraulic fluid port is connected to respectively the first hydraulic fluid port and second hydraulic fluid port of described cooling motor (3).
6. auxiliary hydraulic system as claimed in claim 5, it is characterized in that, described auxiliary hydraulic system also comprises the second relief valve (5), the filler opening of described the second relief valve (5) is connected to the first hydraulic fluid port of described cooling motor (3), and the flow-off of described the second relief valve (5) is connected to the second hydraulic fluid port of described cooling motor (3).
7. auxiliary hydraulic system as claimed in claim 5, is characterized in that, each selector valve is solenoid valve.
8. the auxiliary hydraulic system as described in claim 1 to 4 any one, it is characterized in that, described auxiliary hydraulic system also comprises the 3rd relief valve (2), the filler opening of described the 3rd relief valve (2) is connected to the oil outlet of described main oil pump (1), and the flow-off of described the 3rd relief valve (2) is connected to fuel tank.
9. a concrete pumping equipment, is characterized in that, described concrete pumping equipment is provided with the auxiliary hydraulic system described in claim 1 to 8 any one.
10. concrete pumping equipment as claimed in claim 9, is characterized in that, described concrete pumping equipment is concrete mixer.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320589298.5U CN203548393U (en) | 2013-09-24 | 2013-09-24 | Auxiliary hydraulic system and concrete pumping equipment |
| PCT/CN2014/086346 WO2015043377A1 (en) | 2013-09-24 | 2014-09-12 | Auxiliary hydraulic system and concrete pumping device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320589298.5U CN203548393U (en) | 2013-09-24 | 2013-09-24 | Auxiliary hydraulic system and concrete pumping equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203548393U true CN203548393U (en) | 2014-04-16 |
Family
ID=50466517
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320589298.5U Expired - Lifetime CN203548393U (en) | 2013-09-24 | 2013-09-24 | Auxiliary hydraulic system and concrete pumping equipment |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN203548393U (en) |
| WO (1) | WO2015043377A1 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104196771A (en) * | 2014-07-18 | 2014-12-10 | 燕山大学 | Electrical-hydraulic control device of anti-falling constraining device |
| WO2015043377A1 (en) * | 2013-09-24 | 2015-04-02 | 三一汽车制造有限公司 | Auxiliary hydraulic system and concrete pumping device |
| WO2015165344A1 (en) * | 2014-04-29 | 2015-11-05 | 三一汽车制造有限公司 | Rotary hydraulic system and concrete conveying pump apparatus |
| CN105298955A (en) * | 2015-11-13 | 2016-02-03 | 湖南三一路面机械有限公司 | Stirring and washing system and concrete machine |
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| CN110004930A (en) * | 2019-04-13 | 2019-07-12 | 湖南鹏翔星通汽车有限公司 | A kind of wet-spraying machine forearm pose_adjuster |
| CN109911009A (en) * | 2019-04-24 | 2019-06-21 | 莱州亚通重型装备有限公司 | A kind of metal mine underground concrete mixer truck all hydraulic pressure steering-gear and method |
| CN110670451A (en) * | 2019-10-22 | 2020-01-10 | 柳工无锡路面机械有限公司 | Reversing valve group for open type vibration system of road roller |
| CN113737873B (en) * | 2021-09-07 | 2023-03-17 | 山东临工工程机械有限公司 | Land leveler auxiliary steering hydraulic circuit system and steering operation method thereof |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3030005A1 (en) * | 1980-08-08 | 1982-02-18 | Maschinenfabrik Walter Scheele GmbH & Co KG, 4750 Unna-Massen | CONCRETE PUMP WITH TWO PUMP CYLINDERS |
| CN102400968B (en) * | 2011-11-18 | 2014-10-15 | 三一汽车制造有限公司 | Hydraulic valve, hydraulic system and concrete pumping equipment |
| CN202418066U (en) * | 2012-01-06 | 2012-09-05 | 中联重科股份有限公司 | Hydraulic system and concrete equipment |
| CN102561165B (en) * | 2012-01-11 | 2014-03-26 | 中联重科股份有限公司 | Milling machine and sprinkling and flushing device thereof |
| CN103256264B (en) * | 2013-05-10 | 2016-03-23 | 三一汽车起重机械有限公司 | A kind of hydraulic system and comprise the engineering machinery of this hydraulic system |
| CN103244501B (en) * | 2013-05-14 | 2016-07-13 | 三一汽车起重机械有限公司 | A kind of hydraulic control valve group, hydraulic system and engineering machinery |
| CN203548393U (en) * | 2013-09-24 | 2014-04-16 | 三一汽车制造有限公司 | Auxiliary hydraulic system and concrete pumping equipment |
-
2013
- 2013-09-24 CN CN201320589298.5U patent/CN203548393U/en not_active Expired - Lifetime
-
2014
- 2014-09-12 WO PCT/CN2014/086346 patent/WO2015043377A1/en active Application Filing
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015043377A1 (en) * | 2013-09-24 | 2015-04-02 | 三一汽车制造有限公司 | Auxiliary hydraulic system and concrete pumping device |
| WO2015165344A1 (en) * | 2014-04-29 | 2015-11-05 | 三一汽车制造有限公司 | Rotary hydraulic system and concrete conveying pump apparatus |
| CN104196771A (en) * | 2014-07-18 | 2014-12-10 | 燕山大学 | Electrical-hydraulic control device of anti-falling constraining device |
| CN105298955A (en) * | 2015-11-13 | 2016-02-03 | 湖南三一路面机械有限公司 | Stirring and washing system and concrete machine |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2015043377A1 (en) | 2015-04-02 |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140416 |