CN202326531U - Elevating platform fire truck and hydraulic oil filter device and hydraulic control system thereof - Google Patents

Elevating platform fire truck and hydraulic oil filter device and hydraulic control system thereof Download PDF

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Publication number
CN202326531U
CN202326531U CN2011204707206U CN201120470720U CN202326531U CN 202326531 U CN202326531 U CN 202326531U CN 2011204707206 U CN2011204707206 U CN 2011204707206U CN 201120470720 U CN201120470720 U CN 201120470720U CN 202326531 U CN202326531 U CN 202326531U
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China
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oil
filter
hydraulic
pump
circuit
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CN2011204707206U
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Chinese (zh)
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曹弋
孔德美
卢良卫
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Xugong fire safety equipment Co. Ltd.
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Xuzhou Heavy Machinery Co Ltd
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Abstract

The utility model discloses a hydraulic oil filter device, which mainly comprises a main oil pump, a standby pump, an oil suction filter, a high-pressure oil filter and an oil return filter. The standby pump is connected with the main oil pump in parallel, the oil suction filter and the high-pressure oil filter are respectively arranged on an oil inlet circuit and an oil outlet circuit of the pump, the oil return filter is arranged on a main oil return channel, an oil outlet circuit of the standby pump is communicated with the main oil return circuit through a reversing valve, a bypass oil return circuit is arranged between an oil circuit at the downstream of the reversing valve and the oil tank, and a bypass oil filter connected with the oil return filter in parallel is arranged on the bypass oil return circuit. The hydraulic oil filter device has the advantages that the filter precision of a hydraulic system is increased, the filter cycle is shortened and the system cleanliness is guaranteed on the premise of guaranteeing cost. The utility model further discloses a hydraulic control system and an elevating platform fire truck both provided with the hydraulic oil filter device.

Description

Elevating platform fire truck and hydraulic oil filtrating equipment and hydraulic control system
Technical field
The utility model relates to the hydraulic oil filtration art, is specifically related to a kind of hydraulic oil filtrating equipment, and hydraulic control system and Elevating platform fire truck with this hydraulic oil filtrating equipment.
Background technique
Hydraulic oil is as the power transmission medium of hydraulic system, and having for moving parts provides lubricated, reduces friction between part, prevents to get rusty and important function such as corrosion.If impurity such as metal granule, dust gets into hydraulic oil; Cause hydraulic oil pollution; Then can cause problems such as hydraulic system parts depreciation and the obstruction of little latus rectum control oil channel, even can cause expendable infringement, must guarantee the turbidity test of hydraulic oil for this reason hydraulic element.
Existing technology is provided with the turbidity test of filtrating equipment with protection hydraulic oil in hydraulic system, this filtrating equipment mainly comprises oil suction oil purifier, high pressure filter and the oil return oil purifier in the working connection.But because this type oil purifier requirement through-current capability is big, the pressure loss is little, so filter precision is lower, and can't filter for free water in the fluid and fine particle.
China utility application prospectus CN201547066U proposes between main return line and fuel tank, to be provided with and the parallelly connected bypath oil filter of main oil return oil purifier; To reduce the pollution of fine particle and free water to hydraulic system; Improve filter precision; But,, therefore to filter out hydraulic oil a large amount of in the system via bypath oil filter well below the required flow of system because the bypath oil filter through-current capability is little; Time cycle is oversize, and contaminated hydraulic oil also has little time to filter and just possibly cause damage to system.
For shortening hydraulic oil filter cycle, some large hydraulic systems are provided with special oil hydraulic pump and oil purifier in the existing technology, constitute the by-passing filter system; With the impurity in the filtering fluid, the protection main system, but for baroque heavy mechanical equipment; Like Elevating platform fire truck; The internal system pipeline is many and complicated, filters the power plant inconvenient installation, and can increase cost greatly.
In view of this, need badly to existing hydraulic oil filtrating equipment and improve, on the basis that guarantees cost, improve the hydraulic system filter precision, reduce filter cycle, guarantee system's turbidity test.
The model utility content
To above-mentioned defective, the technical problem that the utility model solves is, a kind of hydraulic oil filtrating equipment is provided, and to improve the hydraulic system filter precision, reduces filter cycle, guarantees system's turbidity test, and guarantees system cost.On this basis, the utility model also provides hydraulic control system and the Elevating platform fire truck with this hydraulic oil filtrating equipment.
The hydraulic oil filtrating equipment that the utility model provides; Comprise main oil pump, with the stand by pump of the parallelly connected setting of said main oil pump, be separately positioned on oil suction oil purifier and high pressure filter on pump intake and the outlet oil circuit; And be arranged on the oil return oil purifier on the main oil circuit; Said subsequent use delivery side of pump oil circuit communicates with main oil circuit through selector valve; And between the oil circuit in said selector valve downstream and fuel tank, be provided with the bypass oil circuit, said bypass oil circuit is provided with and the parallelly connected bypath oil filter of said oil return oil purifier.
As preferably, be equipped with reduction valve in the provided upstream of said the above bypath oil filter of bypass oil circuit.
As preferably, said bypath oil filter is a plurality of and parallelly connected setting.
As preferably, said selector valve is the bi-bit bi-pass solenoid directional control valve.
The hydraulic control system that the utility model provides comprises the position control valve that is arranged on the executive component on the high pressure filter outlet oil circuit and is used to control said executive component action, and this hydraulic control system adopts foregoing hydraulic oil filtrating equipment.
The Elevating platform fire truck that the utility model provides has chassis special and lifting arm support, and adopts foregoing hydraulic control system.
Compared with prior art; The hydraulic oil filtrating equipment that the utility model provides is provided with selector valve and communicates with main oil circuit on subsequent use delivery side of pump oil circuit; Between the oil circuit in selector valve downstream and fuel tank, be provided with the bypass oil circuit; Bypath oil filter is arranged on this bypass oil circuit, and parallelly connected with the oil return oil purifier.Owing to increased bypath oil filter, and this bypath oil filter filter precision is higher, can filter granule and free water that former working connection oil purifier can not filter, helps the turbidity test of the system that guarantees.And, when the hydraulic system proper functioning, main oil pump or stand by pump operation, selector valve is in normally off, and the fluid of oil sump tank flows back to fuel tank through oil return oil purifier and bypath oil filter in the system, realizes the non-power of hydraulic oil is filtered; When hydraulic system is not worked, can open stand by pump, switch selector valve to open mode, make the conducting of stand by pump outlet oil circuit, hydraulic oil flows back to fuel tank after oil return oil purifier and bypath oil filter filtration, realize the power of hydraulic oil is filtered.Obviously, non-power filters and the power filtration combines, and helps shortening the filter cycle of hydraulic oil.In addition, the stand by pump that adopts hydraulic system has improved the utilization ratio of stand by pump as filtering power source, and has saved required expense of special power source and installing space are set, and helps guaranteeing system cost.
In the preferred version of the utility model, the provided upstream of bypath oil filter is equipped with reduction valve on the bypass oil circuit.Because bypath oil filter belongs to fine-filtering device, allow input pressure little, and if in the hydraulic system oil return oil purifier stop up because of dirt; Cause return oil pressure to raise; When the pressure range of back pressure above bypath oil filter, can damage the bypath oil filter filter core, therefore this reduction valve is set; Can limit the inlet pressure of bypath oil filter, help protecting the proper functioning of bypath oil filter.
In another preferred version of the utility model, bypath oil filter is a plurality of and parallelly connected setting, helps the filter capacity of further enhanced system, reduces filter cycle, guarantees system's turbidity test.
Description of drawings
Fig. 1 is the schematic diagram of the said hydraulic oil filtrating equipment of embodiment;
Fig. 2 is the overall structure schematic representation of the said Elevating platform fire truck of embodiment.
Among the figure:
Main oil pump 1, stand by pump 2, oil suction oil purifier 3, high pressure filter 4, oil return oil purifier 5, selector valve 6, bypath oil filter 7, reduction valve 8, executive component 9, position control valve 10, fuel tank 11.
Embodiment
The core design of the utility model is to provide a kind of hydraulic oil filtrating equipment, on the basis that guarantees cost, improves the hydraulic system filter precision, reduces filter cycle, guarantees system's turbidity test.Two core design in addition of the utility model provide hydraulic control system and the Elevating platform fire truck with this hydraulic oil filtrating equipment.
In order to make those skilled in the art better understand the technological scheme of the utility model, do further to specify below in conjunction with Figure of description.
See also Fig. 1, this figure is the schematic diagram of the said hydraulic oil filtrating equipment of embodiment.Can know by figure; The hydraulic oil filtrating equipment that this programme provides; Comprise main oil pump 1 and with the stand by pump 2 of main oil pump 1 parallelly connected setting, on the inlet oil circuit of pump and outlet oil circuit, be respectively arranged with oil suction oil purifier 3 and high pressure filter 4, oil return oil purifier 5 is arranged on the main oil circuit.The outlet oil circuit of stand by pump 2 is provided with selector valve 6; And communicate with main oil circuit; Between the oil circuit in selector valve 6 downstream and fuel tank 11, be provided with the bypass oil circuit, this bypass oil circuit is provided with bypath oil filter 7, and bypath oil filter 7 is parallelly connected with the oil return oil purifier 5 on the main oil circuit.
Owing to increased bypath oil filter 7; And these bypath oil filter 7 filter precisioies are higher; Can filter granule and free water that former working connection oil purifier can not filter; Prevent the phenomenon of the hydraulic oil emulsification that granule causes to the pollution of hydraulic oil and along with the free water content increase, the hydraulic system filter precision is improved, thereby has guaranteed to flow into the turbidity test of the fluid of fuel tank 11.
When the hydraulic system proper functioning; Main oil pump 1 or stand by pump 2 operations; Position control valve 10 is communicated with working connection, and executive component 9 starts and carries out corresponding operating, and the selector valve 6 on the stand by pump 2 outlet oil circuits is in normally off; The oil return oil purifier 5 of the fluid part of oil sump tank 11 on main oil circuit flows back to fuel tank 11 in the system, and the bypath oil filter 7 of another part on the bypass oil circuit flows back to fuel tank 11.At this moment, 7 pairs of hydraulic pressure oil filtrations of bypath oil filter belong to non-power and filter, and promptly as long as hydraulic work system just can carry out by-passing filter, do not influence the through-current capability of working connection.When hydraulic system was not worked, position control valve 10 made working connection break off executive component 9 attonitys; At this moment; Can open stand by pump 2, and the valve element position that switches selector valve 6 opens valve port, stand by pump 2 outlet oil circuit conductings; The hydraulic oil that stand by pump 2 pumps flows back to fuel tank 11 respectively after oil return oil purifier 5 and bypath oil filter 7 filter, this moment the hydraulic pressure oil filtration is belonged to power and filter.Obviously;, hydraulic system also can the fluid of oil sump tank 11 be filtered when not working; Feasible more flexible in time to the hydraulic pressure oil filtration, simultaneously, can also regularly filter as required hydraulic oil; And adopt power filtration and non-power to filter the mode that combines, also shortened the filter cycle of hydraulic oil.In addition, utilize stand by pump 2 as filtering power sources, avoided adding specially in the existing technology expense that power source brings high with problem such as inconvenient installation, help reducing system cost, and the utilization ratio of raising stand by pump 2.
When hydraulic system is not worked, when opening stand by pump 2 and specially hydraulic oil being filtered, because bypath oil filter 7 belongs to fine-filtering device; The permission input pressure is little; And if oil return oil purifier 5 stops up because of dirt in the hydraulic system, cause return oil pressure to raise easily, when return oil pressure surpasses the pressure range that bypath oil filter 7 can bear; Can damage the filter core of bypath oil filter 7; Therefore the upper reaches of bypath oil filter 7 are provided with reduction valve 8 on the bypass oil circuit, with the inlet pressure of restriction bypath oil filter 7, thus protection bypath oil filter 7 proper functioning.
For further improving filter capacity, this programme is set to bypath oil filter 7 a plurality of, and adopts parallel way to connect between these oil purifiers.Along with the increase of bypath oil filter 7 quantity, the hydraulic pressure oil mass that system can filter is also inevitable to be increased thereupon, helps further to reduce filter cycle, guarantees system's turbidity test.
Selector valve 6 on the stand by pump 2 outlet oil circuits is selected to have multiple, and this programme adopts the bi-bit bi-pass solenoid directional control valve can satisfy usage requirement.Through changing the relative position of selector valve 6 spools in valve body, control stand by pump 2 exports the connection and the disconnection of oil circuits, thereby power filtration and the non-power of realizing bypath oil filter 7 filter.In addition; Adopt solenoid directional control valve to compare with the selector valve that adopts other maneuverability patterns, have boundary dimension little, save installing space, advantage such as be difficult for leaking, safe in utilization, and solenoid directional control valve is operated light; Realize automation easily, help increasing work efficiency.
Except that above-mentioned hydraulic oil filtrating equipment; The utility model also provides a kind of hydraulic control system; This hydraulic control system comprises the executive component 9 that is arranged on the high pressure filter 4 outlet oil circuits; And be used to control this executive component 9 and make its position control valve 10 that moves by predetermined requirements, and adopt foregoing hydraulic oil filtrating equipment.The mode that this hydraulic control system adopts working connection filter and bypass strainer to combine is filtered system's hydraulic oil.When the hydraulic system proper functioning, the working connection oil purifier has guaranteed the characteristic that through-current capability is good and the pressure loss is little of system, and bypath oil filter 7 can carry out the essence filter to the fluid of oil sump tank 11, and not influence the working connection through-current capability owing to be installed in the bypass oil circuit.When hydraulic system is not worked, can open stand by pump 2 and specially hydraulic oil filtered, thereby improve the hydraulic oil filter precision, shorten filter cycle, guarantee the turbidity test of system.The cleanliness of hydraulic oil degree improves, and can reduce the rate of fault of hydraulic control system, prolongs its working life.
It is understandable that; Said executive component 9 of this programme and position control valve 10 are not limited to double-acting hydraulic cylinder shown in the drawings and 3-position 4-way solenoid directional control valve; Those skilled in the art are based on the teachings of the utility model; Also can adopt other forms of executive component and position control valve, like oil hydraulic motor, electro-hydraulic reversing valve etc., these are equal to or similar technology replacement means also should fall within the protection domain of the utility model.
In addition; The utility model also provides a kind of Elevating platform fire truck, and this fire-fighting truck has chassis special and lifting arm support, and adopts foregoing hydraulic control system; Specifically can be referring to Fig. 2, this figure is the overall structure schematic representation of the said Elevating platform fire truck of embodiment.
As everyone knows; Elevating platform fire truck only uses when peacetime training and fire fighting; Have the advantages that frequency of utilization is little and each actuation time is short, oil return oil purifier 5 goes up in the filtration system hydraulic oil of kilolitre with bypath oil filter 7 when only depending on system works, and the time cycle is oversize.Because the described hydraulic control system of this programme has increased bypath oil filter 7; And bypath oil filter 7 is higher than working connection oil purifier filter precision; Can filter out littler solid particle and the free water in the fluid, further improve the turbidity test of the fluid that flows back to fuel tank 11.And, when fire-fighting truck is worked, can filter the fluid of a part of oil sump tank 11 through bypath oil filter 7, promptly the non-power to hydraulic oil filters; When fire-fighting truck is not worked, can specially hydraulic oil be filtered with the stand by pump 2 of fire-fighting truck as power source, realize the power of hydraulic oil is filtered.Power filters and the filtration of non-power combines, and can significantly shorten the filter cycle of hydraulic oil, thereby prolongs the replacement cycle of hydraulic oil, and reduces the rate of fault of hydraulic system, prolongs its working life.In addition, the fire-fighting truck internal duct is many and complicated, utilizes stand by pump 2 as filtering power source; Not only saved and added required expense of power source and installing space specially; Reduce system cost, and improved the utilization ratio of stand by pump 2, given full play to the effect of stand by pump 2.
The above only is the preferred implementation of the utility model; Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the utility model principle; Can also make some improvement and retouching, these improvement and retouching also should be regarded as the protection domain of the utility model.

Claims (6)

1. hydraulic oil filtrating equipment; Comprise main oil pump, with the stand by pump of the parallelly connected setting of said main oil pump, be separately positioned on oil suction oil purifier and high pressure filter on pump intake and the outlet oil circuit; And be arranged on the oil return oil purifier on the main oil circuit; It is characterized in that; Said subsequent use delivery side of pump oil circuit communicates with main oil circuit through selector valve, and between the oil circuit in said selector valve downstream and fuel tank, is provided with the bypass oil circuit, and said bypass oil circuit is provided with and the parallelly connected bypath oil filter of said oil return oil purifier.
2. hydraulic oil filtrating equipment according to claim 1 is characterized in that, is equipped with reduction valve in the provided upstream of said the above bypath oil filter of bypass oil circuit.
3. hydraulic oil filtrating equipment according to claim 1 and 2 is characterized in that, said bypath oil filter is a plurality of and parallelly connected setting.
4. hydraulic oil filtrating equipment according to claim 1 and 2 is characterized in that, said selector valve is the bi-bit bi-pass solenoid directional control valve.
5. hydraulic control system; Comprise the position control valve that is arranged on the executive component on the high pressure filter outlet oil circuit and is used to control said executive component action; It is characterized in that this hydraulic control system adopts each described hydraulic oil filtrating equipment in the claim 1 to 4.
6. an Elevating platform fire truck has chassis special and lifting arm support, it is characterized in that, this Elevating platform fire truck adopts the described hydraulic control system of claim 5.
CN2011204707206U 2011-11-23 2011-11-23 Elevating platform fire truck and hydraulic oil filter device and hydraulic control system thereof Active CN202326531U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102962232A (en) * 2012-11-23 2013-03-13 武汉华液传动制造有限公司 High-pressure pulsed turbulent flow pipeline flushing system
CN103603841A (en) * 2013-11-28 2014-02-26 长沙中联消防机械有限公司 Leveling oil cylinder hydraulic control system and fire fighting truck
CN103644155A (en) * 2013-12-17 2014-03-19 上海电气电站设备有限公司 Hydraulic actuator
CN105438980A (en) * 2015-12-22 2016-03-30 中国船舶重工集团公司第七一三研究所 Explosion-proof driving hydraulic control system
CN105715627A (en) * 2016-03-21 2016-06-29 西安天厚滤清技术有限责任公司 Method and device for preventing oil seepage and oil leakage of hydraulic system
CN105715933A (en) * 2016-03-21 2016-06-29 西安天厚滤清技术有限责任公司 Anti-seepage lubricating system
CN105715626A (en) * 2016-03-21 2016-06-29 西安天厚滤清技术有限责任公司 Anti-seepage hydraulic system
CN105715934A (en) * 2016-03-21 2016-06-29 西安天厚滤清技术有限责任公司 Method and device for preventing oil seepage and oil leakage of lubricating system

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102962232A (en) * 2012-11-23 2013-03-13 武汉华液传动制造有限公司 High-pressure pulsed turbulent flow pipeline flushing system
CN103603841A (en) * 2013-11-28 2014-02-26 长沙中联消防机械有限公司 Leveling oil cylinder hydraulic control system and fire fighting truck
CN103603841B (en) * 2013-11-28 2016-03-09 长沙中联消防机械有限公司 Leveling cyclinder hydraulic control system and fire-fighting truck
CN103644155A (en) * 2013-12-17 2014-03-19 上海电气电站设备有限公司 Hydraulic actuator
CN103644155B (en) * 2013-12-17 2016-01-13 上海电气电站设备有限公司 A kind of hydraulic actuator
CN105438980A (en) * 2015-12-22 2016-03-30 中国船舶重工集团公司第七一三研究所 Explosion-proof driving hydraulic control system
CN105438980B (en) * 2015-12-22 2018-02-27 中国船舶重工集团公司第七一三研究所 A kind of explosion-proof driving hydraulic control system
CN105715627A (en) * 2016-03-21 2016-06-29 西安天厚滤清技术有限责任公司 Method and device for preventing oil seepage and oil leakage of hydraulic system
CN105715933A (en) * 2016-03-21 2016-06-29 西安天厚滤清技术有限责任公司 Anti-seepage lubricating system
CN105715626A (en) * 2016-03-21 2016-06-29 西安天厚滤清技术有限责任公司 Anti-seepage hydraulic system
CN105715934A (en) * 2016-03-21 2016-06-29 西安天厚滤清技术有限责任公司 Method and device for preventing oil seepage and oil leakage of lubricating system

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Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
C41 Transfer of patent application or patent right or utility model
TR01 Transfer of patent right

Effective date of registration: 20170217

Address after: 221004 Jiangsu Province, Xuzhou City Yunlong District No. 165

Patentee after: Xugong fire safety equipment Co. Ltd.

Address before: 221004 Xuzhou, Zhejiang Province, Jiangsu Road No. 165

Patentee before: Xuzhou Heavy Machinery Co., Ltd.