CN102975693B - Engineering machinery and cleaning system thereof - Google Patents
Engineering machinery and cleaning system thereof Download PDFInfo
- Publication number
- CN102975693B CN102975693B CN201210073191.5A CN201210073191A CN102975693B CN 102975693 B CN102975693 B CN 102975693B CN 201210073191 A CN201210073191 A CN 201210073191A CN 102975693 B CN102975693 B CN 102975693B
- Authority
- CN
- China
- Prior art keywords
- valve
- pump
- pump motor
- water pump
- hydraulic oil
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Cleaning By Liquid Or Steam (AREA)
Abstract
The invention discloses a cleaning system used for engineering machinery, and the engineering machinery provided with the cleaning system. The cleaning system comprises a water pump, a water pump motor and a first valve. The water pump is used for spraying high pressure water. The water pump motor is in connection with the water pump and drives the water pump to work and to spray the high pressure water. The first valve is in connection with the water pump motor, and hydraulic oil with constant flow can be supplied to the water pump motor to drive the water pump motor to be in rated operation through the first valve. According to the cleaning system, under a full work condition of an engine, the water pump can be in a rated operation and spray the high pressure water, meanwhile, the cleaning system can still be in normal operation when the engine idles speed, and therefore rotation speed of the engine is effectively reduced, output power of the engine is lowered, fuel oil is saved, and using cost is greatly reduced. Besides, the cleaning system is compact in structure, simple in principle, strong in feasibility, capable of being widely applied to concrete pump trucks, trailer pumps or truck mounted pumps to clean trucks, and remarkable in practical effect.
Description
Technical field
The present invention relates to mechanical equipment washing system field, especially relate to a kind of construction machinery and equipment and washing system thereof.
Background technology
Washing system is for example requisite equipment on concrete pump truck of construction machinery and equipment, the time of general concrete pump truck carwash accounts for greatly the 10%-20% of work-hours, in existing concrete pump truck, the power of pump motor is very low, and the power of exporting when high engine speeds is much larger than pump motor power demand, and because pump motor in existing concrete pump truck and mating of driving engine are under driving engine higher rotation speed, the significant wastage that therefore will certainly cause fuel oil, increases use cost greatly.
Summary of the invention
The present invention is intended at least solve one of technical matters existing in prior art.
For this reason, one object of the present invention is to propose a kind of washing system for construction machinery and equipment, and described washing system all can normally be worked under the full operating mode of driving engine, and has the plurality of advantages such as energy-conservation, reduction of discharging, use cost be low.
Another object of the present invention is to propose a kind of construction machinery and equipment with above-mentioned washing system.
According to the washing system for construction machinery and equipment of first aspect present invention embodiment, comprising: for the water pump of inject high pressure water; Pump motor, described pump motor is connected with described water pump and drives described pump working to eject high pressure water; With the first valve, described the first valve is connected with described pump motor and is configured to can provide the hydraulic oil of constant flow rate to drive described pump motor nominal operation to described pump motor.
According to the washing system for construction machinery and equipment of the embodiment of the present invention, the driving engine of the initial power resources of pump motor work on construction machinery and equipment, and under the full operating mode of driving engine, the flow of required hydraulic oil when the first valve all can be supplied with pump motor nominal operation, thereby pump motor is normally worked, and then pump motor drives the specified running of water pump to eject specified hydraulic pressure cleaning work relevant device mechanically, compared with can only high-speed operation driving pump working with driving engine in traditional construction machinery and equipment, this washing system can mate the rotating speed under the full operating mode of driving engine, thereby greatly improve practicality, this washing system can normally work and be ejected by water pump the high pressure water of specified hydraulic pressure in the time of engine idle simultaneously, thereby effectively reduce the rotating speed of driving engine, the horsepower output of driving engine is reduced, thereby save fuel oil, greatly reduce use cost, in addition, this washing system compact conformation, principle is simple, feasibility is strong, can be widely used in concrete pump truck, drag on pump or Vehicle loaded pump for carwash, practical function is remarkable.
In addition, can also there is following additional technical feature according to the washing system for construction machinery and equipment of the embodiment of the present invention:
In one embodiment of the invention, described the first valve is threeway overflow type flow match valve, and the flow that the flow that described threeway overflow type flow match valve is configured to the hydraulic oil that flows into described threeway overflow type flow match valve is more than or equal to described constant flow rate and flows out the hydraulic oil of described threeway overflow type flow match valve equals described constant flow rate.Thus, no matter high engine speeds running or low-speed running (flow of wherein supplying with the hydraulic oil of threeway overflow type flow match valve when tickover is described constant flow rate), the flow of supplying with the hydraulic oil of pump motor from threeway overflow type flow match valve is the required flow of pump motor nominal operation, that is to say pump motor equal can nominal operation normally work with driving water pump under the full operating mode of driving engine, thereby water pump can eject the high pressure water with specified hydraulic pressure so that the associated components on pump truck is cleaned.
In one embodiment of the invention, described threeway overflow type flow match valve comprises: valve body, and described valve inner is limited with valve pocket, and described valve body is provided with the first oil inlet, the first oil outlet and the first return opening; Air restrictor, described air restrictor is located in described valve pocket, and the front end of described air restrictor is provided with air restrictor ante-chamber and rear end is provided with air restrictor back cavity, and wherein said air restrictor ante-chamber is communicated with described the first oil inlet and described air restrictor back cavity is communicated with described the first oil outlet; And logical valve, the cone end of described logical valve is located in described air restrictor ante-chamber, described logical valve be configured in the time that the flow of the hydraulic oil flowing into from described the first oil inlet is described constant flow rate described in logical valve close to supply with the flow of the hydraulic oil of described pump motor from described the first oil outlet be described constant flow rate, in the time that the flow of the hydraulic oil flowing into from described the first oil inlet exceedes described constant flow rate described in logical valve open shunting to supply with the flow of the hydraulic oil of described pump motor from described the first oil outlet be described constant flow rate.
According to the washing system for construction machinery and equipment of the embodiment of the present invention, no matter driving engine is in high-speed working condition or low speed operating mode, water pump equal energy nominal operation also ejects high pressure water cleaning pump truck, and in the time of time of engine low speed, can also effectively reduce the power of driving engine output, thereby save fuel oil, reduce and clean cost, also reduced the discharge of pernicious gas simultaneously, be beneficial to environmental protection.
According to the construction machinery and equipment of second aspect present invention embodiment, comprising: driving engine; Constant pressure pump, described constant pressure pump is connected with the mouth of described driving engine; Gear type pump, described gear type pump is connected with described constant pressure pump, and described gear type pump has the second oil inlet and the second oil outlet, and wherein said the second oil inlet is communicated with the second fuel tank; With according to the washing system for construction machinery and equipment of describing in first aspect present invention embodiment, wherein said the first oil inlet hydraulic oil of supplying with from described gear type pump to receive that is connected with described the second oil outlet.
Alternatively, described construction machinery and equipment is concrete pump truck.
In one embodiment of the invention, described construction machinery and equipment also comprises change-over valve, described gear type pump by described change-over valve to described threeway overflow type flow match valve fuel feeding.
According to the construction machinery and equipment of the embodiment of the present invention, under the full operating mode of driving engine, the high pressure water that water pump all can eject specified hydraulic pressure carries out cleaning operation, and can also capable of saving fuel oil in the time of driving engine slow speed of revolution, reduces the discharge of pernicious gas, reduces use cost.
Additional aspect of the present invention and advantage in the following description part provide, and part will become obviously from the following description, or recognize by practice of the present invention.
Accompanying drawing explanation
Above-mentioned and/or additional aspect of the present invention and advantage accompanying drawing below combination is understood becoming the description of embodiment obviously and easily, wherein:
Fig. 1 is according to the schematic diagram of the washing system for construction machinery and equipment of the embodiment of the present invention;
Fig. 2 is the principle of work sketch of the threeway overflow type flow match valve in the washing system shown in Fig. 1; With
Fig. 3 is according to the partial schematic diagram of the construction machinery and equipment of the embodiment of the present invention.
The specific embodiment
Describe embodiments of the invention below in detail, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has the element of identical or similar functions from start to finish.Be exemplary below by the embodiment being described with reference to the drawings, only for explaining the present invention, and can not be interpreted as limitation of the present invention.
In description of the invention, it will be appreciated that, term " " center ", " longitudinally ", " laterally ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end " " interior ", orientation or the position relationship of indications such as " outward " are based on orientation shown in the drawings or position relationship, only the present invention for convenience of description and simplified characterization, rather than device or the element of indication or hint indication must have specific orientation, with specific orientation structure and operation, therefore can not be interpreted as limitation of the present invention.In addition, term " first ", " second " be only for describing object, and can not be interpreted as indication or hint relative importance.
In description of the invention, it should be noted that, unless otherwise clearly defined and limited, term " installation ", " being connected ", " connection " should be interpreted broadly, and for example, can be to be fixedly connected with, and can be also to removably connect, or connect integratedly; Can be mechanical connection, can be also electrical connection; Can be to be directly connected, also can indirectly be connected by intermediary, can be the connection of two element internals.For the ordinary skill in the art, can particular case understand above-mentioned term concrete meaning in the present invention.In addition,, in description of the invention, except as otherwise noted, the implication of " multiple " is two or more.
Describe according to the washing system 100 for construction machinery and equipment of first aspect present invention embodiment below with reference to Fig. 1-Fig. 3, described washing system 100 is located on construction machinery and equipment, after construction machinery and equipment work for cleaning work correlated parts mechanically, wherein in the following description, describe as example for convenience of describing take construction machinery and equipment as concrete pump truck (abbreviation pump truck), those having ordinary skill in the art will appreciate that, described construction machinery and equipment can also be Vehicle loaded pump or drag pump etc.
According to the washing system 100 for construction machinery and equipment of the embodiment of the present invention, comprise water pump 1, pump motor 2 and the first valve 3, wherein water pump 1 can eject high pressure water, after concrete pump truck work, for such as hopper of the associated components on cleaning concrete pump truck, pump motor 2 is connected with water pump 1 and drives water pump 1 to work to eject high pressure water.The first valve 3 is connected with pump motor 2 and is configured to can provide the hydraulic oil of constant flow rate to drive pump motor 2 nominal operation to pump motor 2.That is to say, under the full operating mode of driving engine (the initial power resources that water pump 1 is worked are in an embodiment of the present invention in driving engine), no matter high engine speeds (or at full speed) turns round or tickover, the flow flowing out from the first valve 3 and supply with the hydraulic oil of pump motor 1 is described constant flow rate, wherein said constant flow rate is pre-set flow, mate suitable pump motor 2 simultaneously, the hydraulic oil that makes constant flow rate is the required flow of the normal work of pump motor 2, thereby pump motor 2 can nominal operation, and then driving water pump 1 nominal operation, be that water pump 1 is with rated speed of rotation work and eject the high pressure water with rated pressure and carry out carwash.
According to the washing system 100 for construction machinery and equipment of the embodiment of the present invention, under the full operating mode of driving engine, the flow of required hydraulic oil when the first valve 3 all can be supplied with pump motor 2 nominal operation, thereby pump motor 2 is normally worked, and then pump motor 2 drives the specified running of water pump 1 to clean the relevant device on pump truck to eject specified hydraulic pressure, compared with can only high-speed operation driving pump working with driving engine in traditional pump truck, this washing system 100 can mate the rotating speed under the full operating mode of driving engine, thereby greatly improve practicality, this washing system 100 can normally work and be ejected by water pump 1 high pressure water of specified hydraulic pressure in the time of engine idle simultaneously, thereby effectively reduce the rotating speed of driving engine, the horsepower output of driving engine is reduced, thereby save fuel oil, greatly reduce use cost, in addition, this washing system 100 compact conformations, principle is simple, feasibility is strong, can be widely used in concrete pump truck, drag on pump or Vehicle loaded pump for carwash, practical function is remarkable.
In one embodiment of the invention, the first valve 3 is threeway overflow type flow match valve, and the flow that the flow that threeway overflow type flow match valve 3 is configured to the hydraulic oil that flows into threeway overflow type flow match valve 3 is more than or equal to described constant flow rate and flows out the hydraulic oil of threeway overflow type flow match valve 3 equals described constant flow rate.That is to say, the flow of such as, supplying with the hydraulic oil of threeway overflow type flow match valve 3 by associated components (gear type pump and change-over valve etc.) when engine idling operation equals constant flow rate, the flow of supplying with the hydraulic oil of threeway overflow type flow match valve 3 while being engine idle has been redefined for described constant flow rate, now flows out and the flow of supplying with the hydraulic oil of pump motor 2 is described constant flow rate from threeway overflow type flow match valve 3.In the time that the rotating speed of driving engine exceedes idling, the flow that driving engine is supplied with the hydraulic oil of threeway overflow type flow match valve 3 by associated components is greater than described constant flow rate, now from threeway overflow type flow match valve 3 flow out and the flow of hydraulic oil of supplying with pump motor 2 still for described constant flow rate, its unnecessary flow is back in fuel tank, that is to say no matter high engine speeds turns round or low-speed running, the flow of supplying with the hydraulic oil of pump motor 2 from threeway overflow type flow match valve 3 is the required flow of pump motor 2 nominal operation, therefore pump motor 2 all can nominal operation normally be worked with driving water pump 1 under the full operating mode of driving engine, thereby water pump 1 can eject the high pressure water with specified hydraulic pressure so that the associated components on pump truck is cleaned.
In a concrete example of the present invention, as depicted in figs. 1 and 2, threeway overflow type flow match valve 3 comprises valve body 31, air restrictor 32 and logical valve 33, wherein valve body 31 inside are limited with valve pocket, valve body 31 is provided with the first oil inlet 34, the first oil outlet 35 and the first return opening 36, air restrictor 32 is located in valve pocket, the front end of air restrictor 32 is provided with air restrictor ante-chamber 37 and air restrictor 32 rear ends are provided with air restrictor back cavity 38, and wherein air restrictor ante-chamber 37 is communicated with the first oil inlet 34 and air restrictor back cavity 38 is communicated with the first oil outlet 35.
The cone end of logical valve 33 is located in air restrictor ante-chamber 37, logical valve 33 is configured in the time that the flow of hydraulic oil flowing into from the first oil inlet 34 is described constant flow rate that logical valve 33 is closed to supply with the flow of the hydraulic oil of pump motor 2 from the first oil outlet 35 be described constant flow rate, in the time that the flow of hydraulic oil flowing into from the first oil inlet 34 exceedes described constant flow rate, logical valve 33 is opened shunting to supply with the flow of the hydraulic oil of pump motor 2 from the first oil outlet 35 be described constant flow rate, the hydraulic oil that has more described constant flow rate part flows into fuel tank 4 from the first return opening 36.
That is to say, threeway overflow type flow match valve 3 has the first pressure value of predefined, corresponding constant flow rate hydraulic oil, when the hydraulic oil that flows into threeway overflow type flow match valve 3 is constant flow rate to should the first pressure value.In the time of engine idling operation, the oil pressure that flows into the hydraulic oil in threeway overflow type flow match valve 3 equals the first pressure value, flow into the hydraulic oil of constant flow rate, now logical valve 33 is closed, and hydraulic oil also finally flows out to drive pump motor 2 from the first oil outlet 35 through air restrictor ante-chamber 37, air restrictor 32 and air restrictor back cavity 38 successively respectively from the first oil inlet 34 flows into.In the time that high engine speeds turns round, the oil pressure that flows into the hydraulic oil in threeway overflow type flow match valve 3 is greater than the first pressure value, flow into the hydraulic oil that exceedes constant flow rate, now logical valve 33 is opened, unnecessary flow also finally flows into fuel tank 4 from the first return opening 36 by air restrictor ante-chamber 37 and logical valve 33 successively, and the hydraulic oil now flowing out from the first oil outlet 35 is still constant flow rate.Thus, under the full operating mode of driving engine, the hydraulic oil of supplying with pump motor 2 from threeway overflow type flow match valve 3 is constant flow rate, thereby pump motor 2 can normally work to drive water pump 1 nominal operation, and then water pump 1 can eject high pressure water cleaning associated components.
Here, it should be noted that,, be not described in detail here by one of ordinary skilled in the art knows about structure and the principle of work etc. (as shown in Figure 2) of threeway overflow type flow match valve 3.
According to the washing system 100 for construction machinery and equipment of the embodiment of the present invention, no matter driving engine is in high-speed working condition or low speed operating mode, the equal energy nominal operation of water pump 1 also ejects high pressure water cleaning pump truck, and in the time of time of engine low speed, can also effectively reduce the power of driving engine output, thereby save fuel oil, reduce and clean cost, also reduced the discharge of pernicious gas simultaneously, be beneficial to environmental protection.
According to the construction machinery and equipment of second aspect present invention embodiment, comprise driving engine, constant pressure pump 200, gear type pump 300 and according to the washing system 100 of describing in first aspect present invention embodiment, wherein constant pressure pump 200 is connected with the mouth of driving engine, gear type pump 300 is connected with constant pressure pump 200, gear type pump 300 has the second oil inlet 310 and the second oil outlet 320, wherein the second oil inlet 310 is communicated with the second fuel tank 5, and the first oil inlet 34 is connected to receive the hydraulic oil supplied with from gear type pump 300 with the second oil outlet 320.
In a specific embodiment of the present invention, construction machinery and equipment also comprises change-over valve 400, gear type pump 300 passes through change-over valve 400 to threeway overflow type flow match valve 3 fuel feeding, for example as shown in Figure 2, the hydraulic oil of gear type pump 300 pumpings is supplied with threeway overflow type flow match valve 3 from A mouth after P mouth enters change-over valve 400.
Wherein, one of ordinary skilled in the art can, according to actual conditions, be integrated in threeway overflow type flow match valve 3 on change-over valve 300 or separately threeway overflow type flow match valve 3 is connected between change-over valve 300 and pump motor 2 (as shown in Figure 2).
Alternatively, construction machinery and equipment can be concrete pump truck, and driving engine, constant pressure pump 200, gear type pump 300 and washing system 100 are all located on the chassis of described concrete pump truck.Certainly, the present invention is not limited to this, and in other embodiments of the invention, construction machinery and equipment can also be Vehicle loaded pump or drag pump etc.
According to the construction machinery and equipment of the embodiment of the present invention, under the full operating mode of driving engine, the high pressure water that water pump all can eject specified hydraulic pressure carries out cleaning operation, and can also capable of saving fuel oil in the time of driving engine slow speed of revolution, reduces the discharge of pernicious gas, reduces use cost.
In the description of this specification sheets, the description of reference term " embodiment ", " some embodiment ", " illustrative examples ", " example ", " concrete example " or " some examples " etc. means to be contained at least one embodiment of the present invention or example in conjunction with specific features, structure, material or the feature of this embodiment or example description.In this manual, the schematic statement of above-mentioned term is not necessarily referred to identical embodiment or example.And specific features, structure, material or the feature of description can be with suitable mode combination in any one or more embodiment or example.
Although illustrated and described embodiments of the invention, those having ordinary skill in the art will appreciate that: in the situation that not departing from principle of the present invention and aim, can carry out multiple variation, modification, replacement and modification to these embodiment, scope of the present invention is limited by claim and equivalent thereof.
Claims (4)
1. for a washing system for construction machinery and equipment, it is characterized in that, comprising:
For the water pump of inject high pressure water;
Pump motor, described pump motor is connected with described water pump and drives described pump working to eject high pressure water; With
The first valve, described the first valve is connected with described pump motor and is configured to can provide the hydraulic oil of constant flow rate to drive described pump motor nominal operation to described pump motor,
Described the first valve is threeway overflow type flow match valve, the flow that the flow that described threeway overflow type flow match valve is configured to the hydraulic oil that flows into described threeway overflow type flow match valve is more than or equal to described constant flow rate and flows out the hydraulic oil of described threeway overflow type flow match valve equals described constant flow rate
Described threeway overflow type flow match valve comprises:
Valve body, described valve inner is limited with valve pocket, and described valve body is provided with the first oil inlet, the first oil outlet and the first return opening;
Air restrictor, described air restrictor is located in described valve pocket, and the front end of described air restrictor is provided with air restrictor ante-chamber and rear end is provided with air restrictor back cavity, and wherein said air restrictor ante-chamber is communicated with described the first oil inlet and described air restrictor back cavity is communicated with described the first oil outlet; And
Logical valve, the cone end of described logical valve is located in described air restrictor ante-chamber, described logical valve is configured in the time that the flow of the hydraulic oil flowing into from described the first oil inlet is described constant flow rate, described logical valve is closed to supply with the flow of the hydraulic oil of described pump motor from described the first oil outlet be described constant flow rate, in the time that the flow of the hydraulic oil flowing into from described the first oil inlet exceedes described constant flow rate, described logical valve opens shunting to supply with the flow of the hydraulic oil of described pump motor from described the first oil outlet be described constant flow rate.
2. a construction machinery and equipment, is characterized in that, comprising:
Driving engine;
Constant pressure pump, described constant pressure pump is connected with the mouth of described driving engine;
Gear type pump, described gear type pump is connected with described constant pressure pump, and described gear type pump has the second oil inlet and the second oil outlet, and wherein said the second oil inlet is communicated with the second fuel tank; With
Washing system for construction machinery and equipment according to claim 1, wherein said the first oil inlet is connected to receive from the hydraulic oil of described gear type pump supply with described the second oil outlet.
3. construction machinery and equipment according to claim 2, is characterized in that, described construction machinery and equipment is concrete pump truck.
4. construction machinery and equipment according to claim 3, is characterized in that, also comprises change-over valve, described gear type pump by described change-over valve to described threeway overflow type flow match valve fuel feeding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210073191.5A CN102975693B (en) | 2012-03-19 | 2012-03-19 | Engineering machinery and cleaning system thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210073191.5A CN102975693B (en) | 2012-03-19 | 2012-03-19 | Engineering machinery and cleaning system thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102975693A CN102975693A (en) | 2013-03-20 |
| CN102975693B true CN102975693B (en) | 2014-07-09 |
Family
ID=47850142
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210073191.5A Active CN102975693B (en) | 2012-03-19 | 2012-03-19 | Engineering machinery and cleaning system thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102975693B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105857259A (en) * | 2016-05-05 | 2016-08-17 | 北汽福田汽车股份有限公司 | Pump truck and double-flow cleaning system thereof |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103204140A (en) * | 2013-04-26 | 2013-07-17 | 四川华通特种工程塑料研究中心有限公司 | Cleaning mechanism for concrete mixer truck |
| CN110758329B (en) * | 2019-12-27 | 2020-04-17 | 宁波均胜群英汽车系统股份有限公司 | Washer for vehicle |
| CN113217672B (en) * | 2021-05-06 | 2022-04-15 | 长江存储科技有限责任公司 | Valve body structure and wafer cleaning system with same |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1573631A (en) * | 2003-05-28 | 2005-02-02 | 沃尔沃建造设备控股（瑞典）有限公司 | Variable flow control apparatus for actuator of heavy construction equipment |
| CN101294589A (en) * | 2007-12-06 | 2008-10-29 | 烟台奔腾汽车检测维修设备制造有限公司 | Hydraulic pressure center valve for novel elevator synchronous elevation, control and application method thereof |
| CN201212495Y (en) * | 2008-07-16 | 2009-03-25 | 陈波 | Balance type pressure regulating system for ultra-high pressure washer |
| CN201342414Y (en) * | 2009-01-15 | 2009-11-11 | 余忠林 | Oil field vehicle-mounted cleaning machine |
| CN201410475Y (en) * | 2009-05-22 | 2010-02-24 | 徐州海伦哲专用车辆股份有限公司 | Water cleaning system of mining concrete pump |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3385069B2 (en) * | 1993-06-29 | 2003-03-10 | 株式会社島津製作所 | Hydraulic actuator |
-
2012
- 2012-03-19 CN CN201210073191.5A patent/CN102975693B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1573631A (en) * | 2003-05-28 | 2005-02-02 | 沃尔沃建造设备控股（瑞典）有限公司 | Variable flow control apparatus for actuator of heavy construction equipment |
| CN101294589A (en) * | 2007-12-06 | 2008-10-29 | 烟台奔腾汽车检测维修设备制造有限公司 | Hydraulic pressure center valve for novel elevator synchronous elevation, control and application method thereof |
| CN201212495Y (en) * | 2008-07-16 | 2009-03-25 | 陈波 | Balance type pressure regulating system for ultra-high pressure washer |
| CN201342414Y (en) * | 2009-01-15 | 2009-11-11 | 余忠林 | Oil field vehicle-mounted cleaning machine |
| CN201410475Y (en) * | 2009-05-22 | 2010-02-24 | 徐州海伦哲专用车辆股份有限公司 | Water cleaning system of mining concrete pump |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105857259A (en) * | 2016-05-05 | 2016-08-17 | 北汽福田汽车股份有限公司 | Pump truck and double-flow cleaning system thereof |
| CN105857259B (en) * | 2016-05-05 | 2018-09-21 | 北汽福田汽车股份有限公司 | A kind of pump truck and its two-flow cleaning system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102975693A (en) | 2013-03-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102975693B (en) | Engineering machinery and cleaning system thereof | |
| CN104492008B (en) | The pouring-in positive/negative-pressure foam proportioning system of a kind of foam truck | |
| US20130019843A1 (en) | Fuel tank apparatus for hybrid vehicle | |
| WO2011047559A1 (en) | Rain-tightness test device for whole railway vehicle | |
| CN203174538U (en) | Small-size multifunctional high-pressure cleaning vehicle | |
| CN208248169U (en) | A kind of cleaning of brake system of car and braking fluid exchange integrated car curing means | |
| CN103770833B (en) | A kind of electric automotive steering pump assembly | |
| CN116641898A (en) | High self-absorption high-efficiency water pump | |
| CN104724165A (en) | Vehicle steering device, control method thereof and vehicle | |
| CN217029455U (en) | Washing and sweeping vehicle facial make-up control system | |
| CN215663635U (en) | Steering device and wide vehicle | |
| CN207140912U (en) | Long-range water supply and sewage wrecking truck | |
| CN202250513U (en) | Automatic exhaust fuel system | |
| CN103158677A (en) | Cleaning system used on engineering machinery and engineering machinery provided with cleaning system | |
| CN201073960Y (en) | Sluicing pipeline used for automobiles | |
| CN203410507U (en) | Dual-steering-pump power-assisted steering system for hybrid power bus | |
| CN210712481U (en) | High-pressure cleaning machine | |
| CN103389686A (en) | Method for controlling pump truck and pump truck | |
| CN202707316U (en) | Oil supply device assembly for double-fuel outboard machine | |
| CN202200969U (en) | Electrically-driven vacuum pump for new-energy automobile | |
| CN202991237U (en) | Intelligent cleaning controller for electric fuel spray nozzles of automobiles | |
| CN203067291U (en) | Lubricating oil pressure energy recovery system of oil-injected screw compressor | |
| CN202399843U (en) | Tire mounting and demounting machine with lubricating device | |
| CN113062900B (en) | Portable auxiliary maintenance equipment for hydraulic system | |
| CN218191504U (en) | Antifreeze solution replacing machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200927 Address after: No.202 Xuanfu street, Xuanhua District, Zhangjiakou, Hebei Province Patentee after: Hebei Leisa Heavy Construction Machinery Co., Ltd Address before: 102206 Changping District City, Shahe, Sha Yang Road, Beijing Patentee before: BEIQI FOTON MOTOR Co.,Ltd. |
|
| TR01 | Transfer of patent right |