CN105089275A - Concrete pump truck and hydraulic system thereof - Google Patents
Concrete pump truck and hydraulic system thereof Download PDFInfo
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- CN105089275A CN105089275A CN201510406332.4A CN201510406332A CN105089275A CN 105089275 A CN105089275 A CN 105089275A CN 201510406332 A CN201510406332 A CN 201510406332A CN 105089275 A CN105089275 A CN 105089275A
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Abstract
The invention discloses a concrete pump truck and a hydraulic system thereof. The hydraulic system comprises a first hydraulic pump (10), a proportional directional spool valve (20), an allocation hydraulic subsystem (31), a supporting leg hydraulic subsystem (32), a rotation hydraulic subsystem (33), a cooling, stirring, washing hydraulic subsystem (34) and an arm rest hydraulic subsystem (35), wherein an oil inlet of the proportional directional spool valve is communicated with an oil outlet of the first hydraulic pump; oil inlets of the arm rest hydraulic subsystem, the rotation hydraulic subsystem and the supporting leg hydraulic subsystem are connected with an oil outlet of the proportional directional spool valve; and an oil inlet of at least one of the allocation hydraulic subsystem and the cooling, stirring, washing hydraulic subsystem is communicated with an oil outlet of the proportional directional spool valve. In the hydraulic system, oil is supplied for the allocation hydraulic subsystem and/or the cooling, stirring, washing hydraulic subsystem by the first hydraulic pump, so that a hydraulic pump special for supplying oil for the allocation hydraulic subsystem and/or the cooling, stirring, washing hydraulic subsystem is omitted.
Description
Technical field
The present invention relates to engineering machinery field, particularly, relate to a kind of concrete mixer and hydraulic system thereof.
Background technology
Concrete mixer utilizes pressure by the machinery of concrete along pipeline continus convergence.Hydraulic system is the key component in concrete mixer.The hydraulic system of concrete mixer mainly comprises pumps hydraulic subsystem, jib hydraulic subsystem, revolution hydraulic subsystem, supporting leg hydraulic subsystem, distributes hydraulic subsystem, cooling and stirring washing hydraulic subsystem etc.Distributing hydraulic subsystem for driving distributor gear, controlling the commutation of distributor gear.Cooling and stirring washing hydraulic subsystem for ensureing that the thermohydraulic oil cooling that system works produced but, and for ensureing that shaft rotates or normal carwash.Jib hydraulic subsystem, for driving arm support oil cylinder, controls jib responsiveness and direction.Revolution hydraulic subsystem is for driving rotation of rotary table.Supporting leg hydraulic subsystem is for controlling the action of supporting leg.Pumps hydraulic subsystem, for driving the pumping oil cylinder of concrete mixer, controls direction and the speed of pumping oil cylinder.
In existing concrete mixer, jib hydraulic subsystem, revolution hydraulic subsystem, supporting leg hydraulic subsystem are by a hydraulic pump fuel feeding, distribution hydraulic subsystem and cooling and stirring washing hydraulic subsystem are respectively by two hydraulic pump fuel feeding, cause hydraulic pump quantity more, system complex, fault rate is high.Further, be generally hydraulic control variable pump to the hydraulic pump of three subsystem fuel feeding such as jib hydraulic subsystem, its feedback regulation is sensitive not, and exporting discharge capacity cannot the current operating mode of accurate match pump truck, causes energy consumption higher.In addition, owing to being generally constant pressure pump to the hydraulic pump distributing hydraulic subsystem fuel feeding, the dispense pressure of distributing hydraulic subsystem can not be regulated as required automatically.Further, owing to being generally gear pump to cooling and stirring washing hydraulic subsystem fuel feeding, the mixing speed of shaft being fixed, can not automatically regulate as required.
Summary of the invention
The object of this invention is to provide the hydraulic system that a kind of pipeline connects simple concrete mixer.
To achieve these goals, the invention provides a kind of hydraulic system of concrete mixer, comprise the first hydraulic pump, proportional multi-way valve, distribute hydraulic subsystem, supporting leg hydraulic subsystem, revolution hydraulic subsystem, cooling and stirring washing hydraulic subsystem, jib hydraulic subsystem, the oil-in of described proportional multi-way valve is communicated with the oil-out of described first hydraulic pump, described jib hydraulic subsystem, revolution hydraulic subsystem is communicated with the oil-out of described proportional multi-way valve respectively with the oil-in of supporting leg hydraulic subsystem three, wherein, described distribution hydraulic subsystem is communicated with the oil-out of described proportional multi-way valve with the oil-in of at least one in cooling and stirring washing hydraulic subsystem.
Preferably, described distribution hydraulic subsystem is all communicated with the oil-out of described proportional multi-way valve with the oil-in of cooling and stirring washing hydraulic subsystem.
Preferably, described proportional multi-way valve comprises oil-feed connection, supporting leg and distribution system connection, revolution connection, cooling and stirring washing connection, jib connection and draining connection, the oil-in of described oil-feed connection is communicated with the oil-out of described first hydraulic pump, and two oil-outs that described distribution hydraulic subsystem joins with described supporting leg and distribution system respectively with the oil-in of described supporting leg hydraulic subsystem are communicated with; The oil-in of described revolution hydraulic subsystem is communicated with the described oil-out joined that turns round; The oil-in of described cooling and stirring washing hydraulic subsystem is washed with described cooling and stirring the oil-out joined and is communicated with; The oil-out that oil-in and the described jib of described jib hydraulic subsystem join is communicated with.
Preferably, described proportional multi-way valve is electric proportional multi-way valve.
Preferably, described hydraulic system comprises pumps hydraulic subsystem and the second hydraulic pump, and the oil-in of described pumps hydraulic subsystem is communicated with the oil-out of described second hydraulic pump.
Preferably, described first hydraulic pump is automatically controlled variable pump.
The present invention also provides a kind of concrete mixer, and this concrete mixer comprises hydraulic system as above.
Preferably, described concrete mixer comprises controller and remote controller, and described remote controller is used for sending command signal to described controller, and described controller is used for the hydraulic fluid flow rate controlling described proportional multi-way valve according to this command signal.
Preferably, described controller is also for controlling described first hydraulic pressure pump delivery according to described command signal.
In hydraulic system of the present invention, be communicated with the oil-out of proportional multi-way valve with the oil-in of at least one in cooling and stirring washing hydraulic subsystem owing to distributing hydraulic subsystem, therefore can by the first hydraulic pump to distribution hydraulic subsystem and/or cooling and stirring washing hydraulic subsystem fuel feeding, thus eliminate the hydraulic pump aiming at and distribute hydraulic subsystem and/or cooling and stirring washing hydraulic subsystem fuel feeding, decrease the quantity of hydraulic pump and fluid pressure line, the pipeline of hydraulic system is connected more simple, facilitate the process of the system failure.
Other features and advantages of the present invention are described in detail in detailed description of the invention part subsequently.
Accompanying drawing explanation
Accompanying drawing is used to provide a further understanding of the present invention, and forms a part for manual, is used from explanation the present invention, but is not construed as limiting the invention with detailed description of the invention one below.In the accompanying drawings:
Fig. 1 is the schematic diagram of the hydraulic system of concrete mixer according to one embodiment of the present invention.
Description of reference numerals
10 first hydraulic pump 20 proportional multi-way valve 21 oil-feed connection
22 supporting legs and distribution system connection 23 revolution connection 24 cooling and stirring washing connection
25 jibs join 26 draining connection 31 and distribute hydraulic subsystem
32 supporting leg hydraulic subsystems 33 turn round hydraulic subsystem
34 cooling and stirring washing hydraulic subsystem 35 jib hydraulic subsystems
Detailed description of the invention
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in detail.Should be understood that, detailed description of the invention described herein, only for instruction and explanation of the present invention, is not limited to the present invention.
As shown in Figure 1, according to an aspect of the present invention, a kind of hydraulic system of concrete mixer is provided, this hydraulic system comprises the first hydraulic pump 10, proportional multi-way valve 20, distribute hydraulic subsystem 31, supporting leg hydraulic subsystem 32, revolution hydraulic subsystem 33, cooling and stirring washing hydraulic subsystem 34, jib hydraulic subsystem 35, the oil-in of proportional multi-way valve 20 is communicated with the oil-out of the first hydraulic pump 10, jib hydraulic subsystem 35, revolution hydraulic subsystem 33 is communicated with the oil-out of proportional multi-way valve 20 respectively with the oil-in of supporting leg hydraulic subsystem 32 three, distribute hydraulic subsystem 31 to be communicated with the oil-out of proportional multi-way valve 20 with the oil-in of at least one in cooling and stirring washing hydraulic subsystem 34.
In hydraulic system of the present invention, be communicated with the oil-out of proportional multi-way valve 20 with the oil-in of at least one in cooling and stirring washing hydraulic subsystem 34 owing to distributing hydraulic subsystem 31, therefore can by the first hydraulic pump 10 to distribution hydraulic subsystem 31 and/or cooling and stirring washing hydraulic subsystem 34 fuel feeding, thus eliminate the hydraulic pump aiming at and distribute hydraulic subsystem 31 and/or cooling and stirring washing hydraulic subsystem 34 fuel feeding, decrease the quantity of hydraulic pump and fluid pressure line, the pipeline of hydraulic system is connected more simple, facilitate the process of the system failure.
Preferably, as shown in Figure 1, distribute hydraulic subsystem 31 and be all communicated with the oil-out of proportional multi-way valve 20 with the oil-in of cooling and stirring washing hydraulic subsystem 34, thus make hydraulic subsystem 31 to 35 by a hydraulic pump fuel feeding.
Each hydraulic subsystem can be connected on proportional multi-way valve 20 with various suitable arrangement mode.As a kind of embodiment, as shown in Figure 1, proportional multi-way valve 20 comprises oil-feed connection 21, supporting leg and distribution system connection 22, revolution connection 23, cooling and stirring washing connection 24, jib connection 25 and draining connection 26, the oil-in of oil-feed connection 21 is communicated with the oil-out of the first hydraulic pump 10, for the hydraulic oil providing each subsystem to need; Draining connection 26 is for letting out oil sump tank by unnecessary hydraulic oil; Distribute hydraulic subsystem 31 to be communicated with the oil-in of supporting leg hydraulic subsystem 32 joins 22 respectively two oil-outs with supporting leg and distribution system; The oil-in of revolution hydraulic subsystem 33 is communicated with the oil-out of revolution connection 23; The oil-in of cooling and stirring washing hydraulic subsystem 34 is communicated with the oil-out that cooling and stirring washes connection 24; The oil-out that oil-in and the jib of jib hydraulic subsystem 35 join 25 is communicated with, and here, the work connection quantity of jib connection 25 is determined according to the jib joint number of concrete mixer.
In the above-described embodiment, by the oil-in distributing hydraulic subsystem 31 and supporting leg hydraulic subsystem 32 is communicated on two oil-outs of a work connection, the quantity of proportional multi-way valve 20 work connection can be reduced, reduce costs.
Preferably, proportional multi-way valve 20 is electric proportional multi-way valve, and this electric proportional multi-way valve is controlled by the controller of concrete mixer.Controller is according to the hydraulic fluid flow rate of each connection of the operating conditions proportional multi-way valve 20 that pump truck is current and pressure, thus control flow and the pressure of subsystems, particularly make the mixing speed of distributing hydraulic subsystem 31 pressure and cooling and stirring washing hydraulic subsystem 35 automatically to regulate as required.
As mentioned above, hydraulic system of the present invention also comprises pumps hydraulic subsystem and the second hydraulic pump (all not shown), and the oil-in of pumps hydraulic subsystem is communicated with the oil-out of the second hydraulic pump.
As the preferred embodiment of the present invention, the first hydraulic pump 10 can be automatically controlled variable pump, and this automatically controlled variable pump is controlled by the controller of concrete mixer, and controller is according to the output discharge capacity of current operating conditions first hydraulic pump 10 of pump truck.Compared with the hydraulic control variable pump adopted in the pump truck hydraulic system of prior art, the feedback regulation of automatically controlled variable pump is sensitiveer, and it exports discharge capacity can mate the current operating mode of pump truck better, thus can reduce energy consumption.
According to a further aspect in the invention, provide a kind of concrete mixer, this concrete mixer comprises hydraulic system of the present invention.
Preferably, in described hydraulic system, proportional multi-way valve 20 is electric proportional multi-way valve, and concrete mixer comprises controller and remote controller, remote controller is used for sending command signal to controller, and controller is used for the hydraulic fluid flow rate according to this command signal control ratio banked direction control valves 20.
More preferably, in described hydraulic system, the first hydraulic pump 10 can be automatically controlled variable pump, and controller is also for controlling the discharge capacity of the first hydraulic pump 10 according to command signal.
Below the preferred embodiment of the present invention is described in detail by reference to the accompanying drawings; but; the present invention is not limited to the detail in above-mentioned embodiment; within the scope of technical conceive of the present invention; can carry out multiple simple variant to technical scheme of the present invention, these simple variant all belong to protection scope of the present invention.
It should be noted that in addition, each the concrete technical characteristic described in above-mentioned detailed description of the invention, in reconcilable situation, can be combined by any suitable mode.In order to avoid unnecessary repetition, the present invention illustrates no longer separately to various possible combination.
In addition, also can be combined between various different embodiment of the present invention, as long as it is without prejudice to thought of the present invention, it should be considered as content disclosed in this invention equally.
Claims (9)
1. the hydraulic system of a concrete mixer, comprise the first hydraulic pump (10), proportional multi-way valve (20), distribute hydraulic subsystem (31), supporting leg hydraulic subsystem (32), revolution hydraulic subsystem (33), cooling and stirring washing hydraulic subsystem (34), jib hydraulic subsystem (35), the oil-in of described proportional multi-way valve (20) is communicated with the oil-out of described first hydraulic pump (10), described jib hydraulic subsystem (35), revolution hydraulic subsystem (33) is communicated with the oil-out of described proportional multi-way valve (20) respectively with the oil-in of supporting leg hydraulic subsystem (32) three, it is characterized in that, described distribution hydraulic subsystem (31) is communicated with the oil-out of described proportional multi-way valve (20) with the oil-in of at least one in cooling and stirring washing hydraulic subsystem (34).
2. hydraulic system according to claim 1, is characterized in that, described distribution hydraulic subsystem (31) is all communicated with the oil-out of described proportional multi-way valve (20) with the oil-in of cooling and stirring washing hydraulic subsystem (34).
3. hydraulic system according to claim 2, it is characterized in that, described proportional multi-way valve (20) comprises oil-feed connection (21), supporting leg and distribution system connection (22), revolution connection (23), cooling and stirring washing connection (24), jib connection (25) and draining connection (26), the oil-in of described oil-feed connection (21) is communicated with the oil-out of described first hydraulic pump (10), and described distribution hydraulic subsystem (31) joins (22) respectively with the oil-in of described supporting leg hydraulic subsystem (32) two oil-outs with described supporting leg and distribution system are communicated with; The oil-in of described revolution hydraulic subsystem (33) is communicated with the described oil-out joining (23) that turns round; The oil-in of described cooling and stirring washing hydraulic subsystem (34) is washed with described cooling and stirring the oil-out joining (24) and is communicated with; The oil-in of described jib hydraulic subsystem (35) joins (25) oil-out with described jib is communicated with.
4. hydraulic system according to claim 1, is characterized in that, described proportional multi-way valve (20) is electric proportional multi-way valve.
5. hydraulic system according to claim 1, is characterized in that, described hydraulic system comprises pumps hydraulic subsystem and the second hydraulic pump, and the oil-in of described pumps hydraulic subsystem is communicated with the oil-out of described second hydraulic pump.
6. hydraulic system as claimed in any of claims 1 to 5, is characterized in that, described first hydraulic pump (10) is automatically controlled variable pump.
7. a concrete mixer, is characterized in that, described concrete mixer comprises hydraulic system as claimed in any of claims 1 to 6.
8. concrete mixer according to claim 7, it is characterized in that, described hydraulic system is hydraulic system according to claim 4, described concrete mixer comprises controller and remote controller, described remote controller is used for sending command signal to described controller, and described controller is used for the hydraulic fluid flow rate controlling described proportional multi-way valve (20) according to this command signal.
9. concrete mixer according to claim 8, is characterized in that, described hydraulic system is hydraulic system according to claim 6, and described controller is also for controlling the discharge capacity of described first hydraulic pump (10) according to described command signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510406332.4A CN105089275A (en) | 2015-07-10 | 2015-07-10 | Concrete pump truck and hydraulic system thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510406332.4A CN105089275A (en) | 2015-07-10 | 2015-07-10 | Concrete pump truck and hydraulic system thereof |
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|---|---|
| CN105089275A true CN105089275A (en) | 2015-11-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510406332.4A Pending CN105089275A (en) | 2015-07-10 | 2015-07-10 | Concrete pump truck and hydraulic system thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112302346A (en) * | 2020-09-22 | 2021-02-02 | 河北雷萨重型工程机械有限责任公司 | Boom hydraulic system and concrete pump truck |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6299416B1 (en) * | 1998-10-10 | 2001-10-09 | Daewoo Heavy Industries Ltd. | Bulk material pump device |
| JP2002195208A (en) * | 2000-12-28 | 2002-07-10 | Mitsubishi Heavy Ind Ltd | Vehicle with boom |
| CN201574992U (en) * | 2009-11-10 | 2010-09-08 | 三一重工股份有限公司 | Multi-way valve, hydraulic device and concrete pump vehicle |
| CN202089695U (en) * | 2011-05-17 | 2011-12-28 | 徐州昊意工程机械科技有限公司 | Hydraulic system for lorry-mounted crane |
| CN102312873A (en) * | 2011-08-19 | 2012-01-11 | 长沙中联重工科技发展股份有限公司 | Concrete pump truck and hydraulic control system thereof |
| CN202414995U (en) * | 2011-12-31 | 2012-09-05 | 宁波凯荣船用机械有限公司 | Crane hydraulic control system |
-
2015
- 2015-07-10 CN CN201510406332.4A patent/CN105089275A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6299416B1 (en) * | 1998-10-10 | 2001-10-09 | Daewoo Heavy Industries Ltd. | Bulk material pump device |
| JP2002195208A (en) * | 2000-12-28 | 2002-07-10 | Mitsubishi Heavy Ind Ltd | Vehicle with boom |
| CN201574992U (en) * | 2009-11-10 | 2010-09-08 | 三一重工股份有限公司 | Multi-way valve, hydraulic device and concrete pump vehicle |
| CN202089695U (en) * | 2011-05-17 | 2011-12-28 | 徐州昊意工程机械科技有限公司 | Hydraulic system for lorry-mounted crane |
| CN102312873A (en) * | 2011-08-19 | 2012-01-11 | 长沙中联重工科技发展股份有限公司 | Concrete pump truck and hydraulic control system thereof |
| CN202414995U (en) * | 2011-12-31 | 2012-09-05 | 宁波凯荣船用机械有限公司 | Crane hydraulic control system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112302346A (en) * | 2020-09-22 | 2021-02-02 | 河北雷萨重型工程机械有限责任公司 | Boom hydraulic system and concrete pump truck |
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Application publication date: 20151125 |