CN2617982Y - Two front and one rear electric and hydraulic speed control valve - Google Patents

Two front and one rear electric and hydraulic speed control valve Download PDF

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Publication number
CN2617982Y
CN2617982Y CN 03231226 CN03231226U CN2617982Y CN 2617982 Y CN2617982 Y CN 2617982Y CN 03231226 CN03231226 CN 03231226 CN 03231226 U CN03231226 U CN 03231226U CN 2617982 Y CN2617982 Y CN 2617982Y
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CN
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Grant
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Prior art keywords
valve
control
model
utility
shift
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CN 03231226
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Chinese (zh)
Inventor
方匡阳
蒋俊
郑志驶
陈莉
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浙江临海海宏集团有限公司
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Abstract

The utility model relates to a hydraulic transmission field, in particular to an electro-hydraulic control variable speed control valve for the power shifting of engineering machinery. The utility model comprises a valve and a main pressure valve, wherein, an electromagnetic reversing valve and a pressure control valve are positioned on the valve; the valve is connected with an oil transportation plate and a clapboard in turn; the electromagnetic reversing valve is integrated on the valve; a press-adjusting spring of the main pressure valve is a one-way compressed structure, which can prolong the fatigue life of the spring. The utility model has the advantages of the convenient operation of the shift, the comfortable control, the stability of the shift without the impact and the good quality of the shift. The utility model can be directly used in present ZL40 and ZL50 loader gearbox and has good promotion value.

Description

新型二前一后电液控制变速操纵阀 After a new two front shift control valve electro-hydraulic control

技术领域 FIELD

:本实用新型涉及液压传动领域,尤其是工程机械的动力换挡电液控制变速操纵阀。 : The present invention relates to a hydraulic drive system, in particular a construction machine power shift speed control valve electro-hydraulic control.

背景技术 Background technique

:现有技术中,工程机械作业工况比较恶劣,行驶操纵状况复杂,换挡频繁。 : Art, engineering machinery working condition is relatively poor, with the situation complicated manipulation, shift frequently. 以装载机为例,目前国内该机械用的变速操纵系统大都采用二前一后机液换挡操纵,它包括阀体、主压力阀、分配阀杆、刹车阀杆等。 In loader, for example, the currently used mechanical transmission control system mostly uses two machines one after the shifting operation fluid, comprising a valve body, a main pressure valve, dispensing valve rod, valve rod brakes. 每个作业循环变速操纵阀需换挡4-5次,连续作业每小时需换挡近千次。 Each shift control valve for an operating cycle shift 4-5 times, per hour of continuous operation required shift nearly a thousand times. 由于其变速阀内没有设计平稳结合控制元件,换挡瞬间离合器结合粗暴,换挡冲击力大,使传动系统产生较大的动载荷,加速了零件的损坏;同时机液换挡的操纵力矩一般在6N.m,操纵力在30N左右,频繁的换挡使操作者极易产生疲劳,从而影响作业的安全性。 Since there is no stable design conjunction with the control member, the shifting clutch is engaged instantaneously its gross shift valve, a large shift shock forces in the driveline to produce a large dynamic load, the acceleration of damaged parts; while manipulating the torque machines generally liquid shiftable in 6N.m, the actuating force of about 30N, frequency shift so that the operator can easily fatigue, thus affecting the safety of operation.

发明内容 SUMMARY

:本实用新型的目的是通过本操纵阀阀体中的电磁换向阀进行油路切换,利用压力控制阀来控制操纵压力的平稳结合,提高设备的使用寿命。 : The object of the present invention is switched by this pilot valve passage body in the solenoid valve, controlled by a pressure control valve a pilot pressure stable binding, improve the life of the device.

本实用新型包括阀体、主压力阀,其特征在于该阀体上有插装式电磁换向阀、压力控制阀,阀体上还顺序连接着输油板和隔板。 The present invention includes a valve body, a main pressure valve, wherein the valve has a plug mounted on the solenoid valve, pressure control valve, the valve body further sequentially connected with oil and a separator plate.

该电磁换向阀集成插装于阀体上,该主压力阀中的调压弹簧为单向受压结构,可延长弹簧的疲劳寿命。 The integrated cartridge solenoid valve on the valve body, the spring of the main pressure regulator valve for unidirectional compression structure, extended fatigue life of the spring.

由于采用了上述技术方案,使得本实用新型具有下列优点:1、换挡操纵轻便,操纵舒适性好;2、换挡平稳无冲击,换挡品质好,设备使用寿命长;3、能在现行的ZL40、ZL50装载机变速箱中直接使用,具有相当的推广价值。 By adopting the technical solution of the present invention that has the following advantages: 1, the shift control light, and good handling comfort; 2, shift smoothly without impact, good shift quality, long life equipment; 3, can be present in the ZL40, ZL50 loader gearbox used directly, with considerable promotional value.

附图说明 BRIEF DESCRIPTION

:图1为本实用新型结构示意图;图2为本实用新型外形侧视图;图3为本实用新型系统原理图。 : FIG. 1 is a schematic view of practical new structure; FIG. 2 is a side view outline invention; FIG. 3 new system schematic present invention.

具体实施方式 detailed description

:如图1所示,本实用新型适用于液压工程机械中的变速操纵系统,它包括阀体1,主压力阀2和压力控制阀3,三个集成插装的电磁换向阀4,如图2所示在阀体1的一侧还顺序连接着输油板5和隔板6。 : 1, the present invention is applicable to a speed control system of hydraulic construction machinery, which includes a valve body 1, a main pressure valve 2 and the pressure control valve 3, the insertion of three integrated electromagnetic valve 4, such as As shown in FIG. 2 on the side of the valve body 1 is further connected to the oil order 5 and the separator plate 6. 当发动机起动后,变速泵的油经过滤清器到达进油口,后分两支油路,一支通过打开主压力阀中溢流阀芯向右移动到达变矩器口,通往变矩器;另一支通过一个节流小孔到达和离合器液压缸相连的容腔。 When the engine is started, a variable speed pump oil through the filter reaches the oil inlet passage after two minutes, the torque converter reaches a rightward opening the main port by a pressure relief valve in the valve core, leading to a torque converter ; a further branched via a throttling orifice connected to the chamber and reaches the clutch cylinder. 由于阀体1中装有压力控制阀3,随着压力控制阀3上的中孔7不断被接通和关闭,使系统压力缓慢升高,保证了换挡瞬间离合器油缸压力平稳上升,实现平稳起步和柔性换挡。 Since the valve body 1 is provided with a pressure control valve 3, as the pressure control valve hole 37 is continuously turned on and off, the system pressure was slowly increased to ensure that the moment the clutch shift cylinder pressure rises smoothly, smooth and a flexible start shifting. 主压力阀2中的调压弹簧8一侧与溢流阀芯9肩部接触,另一侧与阀体内腔的侧壁接触,为单向受压结构,改变了原有弹簧的双向受压状态,系统最终压力的调定由调压弹簧8决定。 Main pressure regulator valve spring 28 in contact with one side of the core 9 spill valve shoulder, side wall and the other side contacting the body lumen, unidirectional compression structure has changed the original biaxial compression spring state, the final pressure is determined by the system set-pressure regulating spring 8. 本实用新型中的电磁换向阀4直接控制挡位离合器动作,其集成插装的三个电磁换向阀控制油路的切换,满足主机二前一后的行星式动力换挡变速箱对变速操纵阀的要求。 In the present invention, an electromagnetic valve 4 directly controls the gear clutch operation, three solenoid valve which is integrated in the insertion passage of the control switch, two front host satisfies a rear planetary gear of the power shift transmission pilot valve requirements. 电磁换向阀通过电器线路与主机上的电操纵组合开关连接,当操作者扳动(或旋转)操纵手柄于某一挡位时,组合开关同时向操纵阀内相应的电磁换向阀发出电信号使之处于通电位,此时液压系统向对应的某挡离合器输出压力油使之接合,完成换挡操纵。 Solenoid valve by actuating a combination of electrical lines electrically connected to a host switch, when an operator pulled (or rotated) at a gear when the operating handle, the combination switch are simultaneously sent to the corresponding solenoid valve electrically operated valve within in an energized position signal so that, when the hydraulic system so that a corresponding gear clutch engagement oil pressure output, the shifting operation is completed. 本实用新型的系统工作原理见附图3,图中R1为倒退一挡,F1为前进一挡,F2为前进二挡,P为进油口,PZW为变矩器口。 The system of the present invention works see FIG. 3, FIG R1 is a reverse gear, the forward first speed Fl, F2 is a forward second speed, P is the oil inlet, PZW torque converter mouth. 本实用新型结构能与现行的ZL40、ZL50装载机变速箱相匹配。 The utility model structure can, ZL50 loader gearbox to match the current ZL40. 此外本实用新型省去了用于机液控制的刹车制动总成的气控元件,减轻了整机的管路布置,大大降低了生产成本。 Furthermore, the present invention eliminates the need for pneumatic braking element assembly for controlling fluid machine, reducing the overall arrangement of the conduit, greatly reduce the production cost.

Claims (3)

  1. 1.一种新型二前一后电液控制变速操纵阀,包括阀体(1)、主压力阀(2),其特征在于该阀体(1)上有插装式电磁换向阀(4)、压力控制阀(3),阀体上还顺序连接着输油板(5)和隔板(6)。 A novel two tandem electro-hydraulic control shift control valve, comprising a valve body (1), a main pressure valve (2), characterized in that the solenoid valve has a cartridge-style (on which the valve body 4 (1) ), the pressure control valve (3), the valve plate further sequentially connected to the oil (5) and the separator (6).
  2. 2.如权利要求1所述的电液控制变速操纵阀,其特征在于该电磁换向阀(4)集成插装在阀体(1)上。 2. The electro-hydraulic control according to claim 1, wherein the shift control valve, wherein the solenoid valve (4) integrated inserted in the valve body (1).
  3. 3.如权利要求1所述的电液控制变速操纵阀,其特征在于该主压力阀(2)中的调压弹簧(8)一侧与溢流阀芯(9)肩部接触,另一侧与阀体内腔的侧壁接触。 3. The electro-hydraulic control of the shift control valve as claimed in claim 1, characterized in that the main pressure regulator valve spring (8) (2) in the core side relief valve (9) in contact with the shoulder, the other side contact with the sidewall of the body cavity.
CN 03231226 2003-05-13 2003-05-13 Two front and one rear electric and hydraulic speed control valve CN2617982Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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CN 03231226 CN2617982Y (en) 2003-05-13 2003-05-13 Two front and one rear electric and hydraulic speed control valve

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102390372A (en) * 2011-11-07 2012-03-28 中国煤炭科工集团太原研究院 Hydraulic control power cutting device of down-hole trackless rubber-tyred car
CN102767617A (en) * 2012-07-18 2012-11-07 四川大学 Hydraulic gear-shifting pressure control valve
CN103322186A (en) * 2013-06-26 2013-09-25 临海市优力达机械有限公司 Low-impact speed change control valve for loader
CN103925252A (en) * 2014-03-10 2014-07-16 杭州前进齿轮箱集团股份有限公司 Electrically-controlled inching valve
CN106321546A (en) * 2016-10-09 2017-01-11 合肥协力液压科技有限公司 Adjustable-flow gearbox electro-hydraulic control valve

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102390372A (en) * 2011-11-07 2012-03-28 中国煤炭科工集团太原研究院 Hydraulic control power cutting device of down-hole trackless rubber-tyred car
CN102767617A (en) * 2012-07-18 2012-11-07 四川大学 Hydraulic gear-shifting pressure control valve
CN102767617B (en) * 2012-07-18 2015-06-24 四川大学 Hydraulic gear-shifting pressure control valve
CN103322186A (en) * 2013-06-26 2013-09-25 临海市优力达机械有限公司 Low-impact speed change control valve for loader
CN103322186B (en) * 2013-06-26 2016-10-05 临海市优力达机械有限公司 Loader low impact speed change control valve
CN103925252A (en) * 2014-03-10 2014-07-16 杭州前进齿轮箱集团股份有限公司 Electrically-controlled inching valve
CN103925252B (en) * 2014-03-10 2017-01-18 杭州前进齿轮箱集团股份有限公司 An electrically controlled valve jog
CN106321546A (en) * 2016-10-09 2017-01-11 合肥协力液压科技有限公司 Adjustable-flow gearbox electro-hydraulic control valve

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