WO2018095088A1 - 装载机自动防颠簸行走系统 - Google Patents

装载机自动防颠簸行走系统 Download PDF

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Publication number
WO2018095088A1
WO2018095088A1 PCT/CN2017/098928 CN2017098928W WO2018095088A1 WO 2018095088 A1 WO2018095088 A1 WO 2018095088A1 CN 2017098928 W CN2017098928 W CN 2017098928W WO 2018095088 A1 WO2018095088 A1 WO 2018095088A1
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Prior art keywords
bumping
oil pump
control handle
loader
signal processor
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PCT/CN2017/098928
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English (en)
French (fr)
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杜阳
陈建军
汪琰
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江苏柳工机械有限公司
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Publication of WO2018095088A1 publication Critical patent/WO2018095088A1/zh

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    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/20—Drives; Control devices
    • E02F9/22—Hydraulic or pneumatic drives

Definitions

  • the invention relates to a walking control system for engineering machinery products, in particular to a walking control system for a loader, belonging to the technical field of engineering machinery.
  • the loader is a machine used to load transportation materials. Its working environment is generally harsh and the transportation road surface is uneven.
  • the existing static pressure driven walking loader is generally controlled by the handle to drive the pump to control the walking, and the rough road surface is scraped.
  • the speed of the vehicle is fast, and when the loader suddenly encounters a bump in the obstacle, the driver's hand will unconsciously sway back and forth with the whole machine.
  • This reciprocating operation intensifies the bump of the whole machine, thereby forming a vicious circle. This causes the spillage of the transported material and the driver's discomfort, which can cause safety problems in severe cases.
  • the present invention is directed to overcoming the above-discussed shortcomings of the prior art, and is directed to providing a loader automatic anti-bumping walking system capable of filtering reciprocating control signals within a set time, avoiding bumps in the whole machine, and misoperation of the driver. .
  • a loader automatic anti-bumping walking system comprising an oil pump, a control handle and a motor, the control handle outputs a control signal to the oil pump, and the oil pump driving motor drives the whole machine to walk;
  • the loader automatic anti-bumping walking system further comprises a signal processor, the signal processor is disposed between the control handle and the oil pump, and after the control signal output by the control handle is transmitted to the signal processor, the signal processor filters out the reciprocating control of the output of the control handle within a set time The signal is not transmitted to the oil pump to achieve the anti-bumping effect of the loader.
  • the signal processor includes an accumulator disposed between the control handle and the oil pump.
  • the fast switching function is implemented in conjunction with the accumulator to prevent the automatic anti-bumping walking system from affecting the normal operation
  • the signal processor further includes a mode switching switch, the mode switching switch is a solenoid valve, and the accumulator The series is disposed between the control handle and the oil pump, and the electromagnetic valve controls the on/off of the loader automatic anti-bumping walking system.
  • the signal processor includes a throttle valve, and the throttle valve is disposed between the control handle and the oil pump to function as a damping hole.
  • the preferred item is a fast switching function for the throttle valve to avoid the automatic anti-bumping walking system affecting the normal operation.
  • the signal processor further includes a mode switching switch, the mode switching switch is a solenoid valve, and is disposed in parallel with the throttle valve between the control handle and the oil pump, and the electromagnetic valve controls the loader to automatically prevent bumps from walking. The system is switched on and off.
  • the signal processor includes a controller and a proportional solenoid valve, and the controller is disposed in series with the proportional solenoid valve between the control handle and the oil pump, the controller The opening degree of the proportional solenoid valve is controlled by recognizing the control signal outputted by the control handle to achieve the anti-bumping effect of the loader.
  • the fast switching function is implemented in conjunction with the electronically controlled operating system to prevent the automatic anti-bumping walking system from affecting the normal operation
  • the signal processor further includes a mode switching switch, the mode switching switch directly controls the controller, To control the loader's automatic anti-bumping travel system on and off.
  • the present invention adopts a simple system component, and a slight rectification of the existing system solves the problem that the bump is intensified due to the front and rear shaking of the control handle when the entire opportunity obstacle is instantaneously generated.
  • the function can be turned off by the mode switch to meet the needs of different working conditions.
  • Figure 1 is a schematic diagram of Embodiment 1 of the present invention.
  • FIG. 2 is a schematic diagram of Embodiment 2 of the present invention.
  • Figure 3 is a schematic diagram of Embodiment 3 of the present invention.
  • a loader automatic anti-bumping walking system includes an oil pump 1, a control handle 2 and a motor 3.
  • the control handle 2 outputs a control signal to the oil pump 1, and the oil pump 1 drives the motor 3 to drive the whole machine to walk;
  • the loader automatic anti-bumping walking system further includes a signal processor 4, and after the control signal outputted by the control handle 2 is transmitted to the signal processor 4, the signal processor 4 filters out the reciprocating output of the control handle 2 within the set time.
  • the control signal is not transmitted to the oil pump 1 to achieve the anti-bumping effect of the loader.
  • the signal processor 4 includes an accumulator 41 and a mode switching switch 42 .
  • the mode switching switch 42 is a solenoid valve 421 which is disposed in series with the accumulator 41 between the control handle 2 and the oil pump 1 .
  • the solenoid valve 421 controls the on/off of the loader automatic anti-bumping travel system. Since the walking system in this embodiment is hydraulic oil control, when the loader automatically prevents the bumpy walking system from working, the hydraulic oil flows first. When the accumulator 41 is charged and the accumulator 41 is fully charged for a certain time (for example, 0.3 s), the reciprocating operation signal of the driver operating the control handle 2 during the constant time is not transmitted to the oil pump 1, that is, the motor 3 It does not respond immediately, thus preventing the car bumps from increasing.
  • the steering signal is transmitted to the oil pump 1, and the motor 3 is responsive to avoid affecting the driver's normal operation due to the anti-bumping travel system.
  • the electromagnetic valve 421 is closed, so that the oil pump 1 directly responds to the control signal outputted by the control handle 2, thereby improving the dynamic response characteristic of the whole machine running control.
  • a loader automatic anti-bumping walking system includes an oil pump 1, a control handle 2 and a motor 3.
  • the control handle 2 outputs a control signal to the oil pump 1, and the oil pump 1 drives the motor 3 to drive the whole machine to walk;
  • the loader automatic anti-bumping walking system further includes a signal processor 4, and after the control signal outputted by the control handle 2 is transmitted to the signal processor 4, the signal processor 4 filters out the reciprocating output of the control handle 2 within the set time. The control signal is not transmitted to the oil pump 1 to achieve the anti-bumping effect of the loader.
  • the signal processor 4 includes a throttle valve 43 and a mode switching switch 42 that functions as a damping hole, and the mode switching switch 42 is a solenoid valve 421 that is connected in parallel with the throttle valve 43. It is disposed between the control handle 2 and the oil pump 1, and the electromagnetic valve 421 controls the on/off of the automatic anti-bumping walking system of the loader. Since the traveling system in this embodiment is hydraulic oil control, when the loader automatically prevents the bumping travel system from operating, the hydraulic oil first flows into the throttle valve 43, and the throttle oil 43 acts as a damping hole, and the hydraulic oil flows through the throttle valve.
  • the driver's reciprocating operation signal for operating the control handle 2 during this set time is not transmitted to the oil pump 1, that is, the motor 3 does not respond immediately, thereby preventing the whole vehicle from jolting.
  • the situation has intensified.
  • the steering signal is transmitted to the oil pump 1, and the motor 3 is responsive to avoid affecting the driver's normal operation due to the anti-bumping travel system.
  • the electromagnetic valve 421 When the whole machine is running on a smooth road surface or the driver thinks that the anti-bump function is not needed, the electromagnetic valve 421 is closed, so that the oil pump 1 directly responds to the control signal outputted by the control handle 2, thereby improving the dynamic response characteristic of the whole machine running control.
  • a loader automatic anti-bumping walking system includes an oil pump 1, a control handle 2 and a motor 3.
  • the control handle 2 outputs a control signal to the oil pump 1, and the oil pump 1 drives the motor 3 to drive the whole machine to walk;
  • the loader automatic anti-bumping walking system further includes a signal processor 4, and after the control signal outputted by the control handle 2 is transmitted to the signal processor 4, the signal processor 4 filters out the reciprocating output of the control handle 2 within the set time.
  • the control signal is not transmitted to the oil pump 1 to achieve the anti-bumping effect of the loader.
  • the signal processor 4 includes a controller 44, a proportional solenoid valve 45 and a mode switching switch 42.
  • the controller 44 is disposed in series with the proportional solenoid valve 45 on the control handle 2 and Between the oil pumps 1, the controller 44 controls the opening degree of the proportional solenoid valve 44 by recognizing a control signal output from the control handle 2 to achieve an anti-bumping effect of the loader.
  • the mode switching switch 42 directly controls the controller 44 to control the automatic anti-bumping walking system of the loader. Since the walking system is electrically controlled in this embodiment, when the loader automatic anti-bumping walking system is in operation, the controller 44 is provided with an anti-bumping operation mode, and when the driver operates the control handle 2 in a short time (for example, 0.3 s), The control handle 2 outputs a reciprocating control signal.
  • the controller 44 filters out the reciprocating control signal outputted by the control handle 2 in a short time, and does not transmit to the driving oil pump 1 to slow down the bump.
  • the steering signal is transmitted to the oil pump 1, and the motor 3 is responsive to avoid affecting the driver's normal operation due to the anti-bumping travel system.
  • the mode switching switch 42 is turned off, so that the oil pump 1 directly responds to the control signal outputted by the control handle 2, thereby improving the dynamic response characteristic of the whole machine running control.

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  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Operation Control Of Excavators (AREA)

Abstract

一种装载机自动防颠簸行走系统，包括油泵(1)、控制手柄(2)和马达(3)，控制手柄(2)输出控制信号至油泵(1)，油泵(1)驱动马达(3)带动整机行走；还包括信号处理器(4)，信号处理器(4)设置于控制手柄(2)和油泵(1)之间，控制手柄(2)输出的控制信号传递至信号处理器(4)后，信号处理器(4)筛选出设定时间内控制手柄(2)输出的往复控制信号，不传递至油泵(1)，以达到装载机防颠簸的效果。当整机行驶在平整路面或驾驶员认为不需要防颠簸功能可通过模式切换开关(42)来关闭此功能。

Description

装载机自动防颠簸行走系统 技术领域
本发明专利涉及一种工程机械产品的行走操控系统，特别是一种装载机的行走操控系统，属于工程机械技术领域。
背景技术
装载机是用来装载运输物料的机械，其工作环境一般较为恶劣，运输路面不平整，现有的静压驱动行走的装载机一般为手柄控制驱动泵从而控制行走，在不平整路面铲运过程中，车速较快，装载机突然遇到障碍物发生颠簸时，驾驶员的手会不自觉的随整机一起前后晃动，这样的往复操作又加剧了整机的颠簸，进而形成恶性循环，从而导致运输物料的洒落和驾驶员的不舒适，严重情况下会造成安全问题。此外一些特殊工况下，如上坡、狭窄道路等，也需要避免驾驶员短时间内的往复操作。
发明内容
发明目的：本发明为克服上述现有技术存在的缺点提出，其旨在提供一种能过滤设定时间内往复控制信号、避免整机颠簸及驾驶员的误操作的装载机自动防颠簸行走系统。
技术方案：一种装载机自动防颠簸行走系统，包括油泵、控制手柄和马达，所述控制手柄输出控制信号至油泵，油泵驱动马达带动整机行走；所述装载机自动防颠簸行走系统还包括信号处理器，所述信号处理器设置于控制手柄和油泵之间，所述控制手柄输出的控制信号传递至信号处理器后，所述信号处理器筛选出设定时间内控制手柄输出的往复控制信号，不传递至油泵，以达到装载机防颠簸的效果。
优选项，为能简便有效的实现防颠簸效果，所述信号处理器包括蓄能器，所述蓄能器设置于控制手柄和油泵之间。
优选项，为配合蓄能器实现快速切换功能，避免自动防颠簸行走系统影响常规操作，所述信号处理器还包括模式切换开关，所述模式切换开关为电磁阀，其与所述蓄能器串联设置于控制手柄和油泵之间，所述电磁阀控制所述装载机自动防颠簸行走系统的通断。
优选项，为提高实现防颠簸效果的经济性，所述信号处理器包括节流阀，所述节流阀设置于控制手柄和油泵之间，起到阻尼孔的作用。
优选项，为配合节流阀实现快速切换功能，避免自动防颠簸行走系统影响常规操作， 所述信号处理器还包括模式切换开关，所述模式切换开关为电磁阀，其与所述节流阀并联设置于控制手柄和油泵之间，所述电磁阀控制所述装载机自动防颠簸行走系统的通断。
优选项，为使电控操作系统能实现防颠簸效果，所述信号处理器包括控制器和比例电磁阀，所述控制器与比例电磁阀串联设置于控制手柄和油泵之间，所述控制器通过识别所述控制手柄输出的控制信号来控制比例电磁阀的开度，以达到装载机防颠簸的效果。
优选项，为配合电控操作系统实现快速切换功能，避免自动防颠簸行走系统影响常规操作，所述所述信号处理器还包括模式切换开关，所述模式切换开关直接控制所述控制器，起到控制所述装载机自动防颠簸行走系统通断的作用。
有益效果：本发明采用简单的系统元件，对现有的系统略作整改就解决了在整机遇障碍物颠簸瞬间发生时，由于控制手柄的前后晃动造成颠簸加剧的问题。当整机行驶在平整路面或驾驶员认为不需要防颠簸功能可通过模式切换开关来关闭此功能，以满足不同工况的需要。
附图说明
图1为本发明实施例1的原理图；
图2为本发明实施例2的原理图；
图3为本发明实施例3的原理图。
具体实施方式
下面结合附图和实施例对本发明进一步说明。
实施例一
如图1所示，一种装载机自动防颠簸行走系统，包括油泵1、控制手柄2和马达3，所述控制手柄2输出控制信号至油泵1，油泵1驱动马达3带动整机行走；所述装载机自动防颠簸行走系统还包括信号处理器4，所述控制手柄2输出的控制信号传递至信号处理器4后，所述信号处理器4筛选出设定时间内控制手柄2输出的往复控制信号，不传递至油泵1，以达到装载机防颠簸的效果。所述信号处理器4包括蓄能器41和模式切换开关42，所述模式切换开关42为电磁阀421，其与所述蓄能器41串联设置于控制手柄2和油泵1之间，所述电磁阀421控制所述装载机自动防颠簸行走系统的通断。由于此实施例下行走系统是液压油控制，当装载机自动防颠簸行走系统工作时，液压油先流 入蓄能器41，蓄能器41充满的时间为一定值(例如0.3s)，则驾驶员在此定值时间内操作控制手柄2的往复操纵信号是不会传递到油泵1，即马达3不会立即响应，从而防止了整车颠簸情况的加剧。当驾驶员操作控制手柄2的操纵信号大于定值时间后，操纵信号传递到油泵1，马达3得到响应，便可避免因防颠簸行走系统而影响驾驶员的正常操作。当整机行驶在平整路面或驾驶员认为不需要防颠簸功能时，关闭电磁阀421，使油泵1直接响应控制手柄2输出的控制信号，从而提高整机行走控制的动态响应特性。实施例二
如图2所示，一种装载机自动防颠簸行走系统，包括油泵1、控制手柄2和马达3，所述控制手柄2输出控制信号至油泵1，油泵1驱动马达3带动整机行走；所述装载机自动防颠簸行走系统还包括信号处理器4，所述控制手柄2输出的控制信号传递至信号处理器4后，所述信号处理器4筛选出设定时间内控制手柄2输出的往复控制信号，不传递至油泵1，以达到装载机防颠簸的效果。所述信号处理器4包括节流阀43和模式切换开关42，所述节流阀43起到阻尼孔的作用，所述模式切换开关42为电磁阀421，其与所述节流阀43并联设置于控制手柄2和油泵1之间，所述电磁阀421控制所述装载机自动防颠簸行走系统的通断。由于此实施例下行走系统是液压油控制，当装载机自动防颠簸行走系统工作时，液压油先流入节流阀43，由于节流阀43起到阻尼孔的作用，液压油流过节流阀43需要一定的时间(例如0.3s)，则驾驶员在此定值时间内操作控制手柄2的往复操纵信号是不会传递到油泵1，即马达3不会立即响应，从而防止了整车颠簸情况的加剧。当驾驶员操作控制手柄2的操纵信号大于定值时间后，操纵信号传递到油泵1，马达3得到响应，便可避免因防颠簸行走系统而影响驾驶员的正常操作。当整机行驶在平整路面或驾驶员认为不需要防颠簸功能时，关闭电磁阀421，使油泵1直接响应控制手柄2输出的控制信号，从而提高整机行走控制的动态响应特性。
实施例三
如图3所示，一种装载机自动防颠簸行走系统，包括油泵1、控制手柄2和马达3，所述控制手柄2输出控制信号至油泵1，油泵1驱动马达3带动整机行走；所述装载机自动防颠簸行走系统还包括信号处理器4，所述控制手柄2输出的控制信号传递至信号处理器4后，所述信号处理器4筛选出设定时间内控制手柄2输出的往复控制信号，不传递至油泵1，以达到装载机防颠簸的效果。所述信号处理器4包括控制器44、比例电磁阀45和模式切换开关42，所述控制器44与比例电磁阀45串联设置于控制手柄2和 油泵1之间，所述控制器44通过识别所述控制手柄2输出的控制信号来控制比例电磁阀44的开度，以达到装载机防颠簸的效果。所述模式切换开关42直接控制所述控制器44，起到控制所述装载机自动防颠簸行走系统通断的作用。由于此实施例下行走系统是电控制，当装载机自动防颠簸行走系统工作时，控制器44设置有防颠簸操纵模式，当驾驶员在短时间内(例如0.3s)操作控制手柄2，使控制手柄2输出往复控制信号，此时控制器44筛选出短时间内控制手柄2输出的往复控制信号，不传递至驱动油泵1，减缓颠簸情况。当驾驶员操作控制手柄2的操纵信号大于定值时间后，操纵信号传递到油泵1，马达3得到响应，便可避免因防颠簸行走系统而影响驾驶员的正常操作。当整机行驶在平整路面或驾驶员认为不需要防颠簸功能时，关闭模式切换开关42，使油泵1直接响应控制手柄2输出的控制信号，从而提高整机行走控制的动态响应特性。
上面虽然结合实施例对本发明作了详细的说明，但是所述技术领域的技术人员能够理解，在不脱离本发明宗旨的前提下，还可以对上述实施例进行变更或改变等，如将上述三种实施例进行组合、将信号处理器4的位置进行变动等，仍落在本发明的保护范围内。

Claims (7)

  1. 一种装载机自动防颠簸行走系统，包括油泵(1)、控制手柄(2)和马达(3)，所述控制手柄(2)输出控制信号至油泵(1)，油泵(1)驱动马达(3)带动整机行走；其特征在于：所述装载机自动防颠簸行走系统还包括信号处理器(4)，所述信号处理器(4)设置于控制手柄(2)和油泵(1)之间，所述控制手柄(2)输出的控制信号传递至信号处理器(4)后，所述信号处理器(4)筛选出设定时间内控制手柄(2)输出的往复控制信号，不传递至油泵(1)，以达到装载机防颠簸的效果。
  2. 根据权利要求1所述的装载机自动防颠簸行走系统，其特征在于：所述信号处理器(4)包括蓄能器(41)，所述蓄能器(41)设置于控制手柄(2)和油泵(1)之间。
  3. 根据权利要求2所述的装载机自动防颠簸行走系统，其特征在于：所述信号处理器(4)还包括模式切换开关(42)，所述模式切换开关(42)为电磁阀(421)，其与所述蓄能器(41)串联设置于控制手柄(2)和油泵(1)之间，所述电磁阀(421)控制所述装载机自动防颠簸行走系统的通断。
  4. 根据权利要求1所述的装载机自动防颠簸行走系统，其特征在于：所述信号处理器(4)包括节流阀(43)，所述节流阀(43)设置于控制手柄(2)和油泵(1)之间，起到阻尼孔的作用。
  5. 根据权利要求4所述的装载机自动防颠簸行走系统，其特征在于：所述信号处理器(4)还包括模式切换开关(42)，所述模式切换开关(42)为电磁阀(421)，其与所述节流阀(43)并联设置于控制手柄(2)和油泵(1)之间，所述电磁阀(421)控制所述装载机自动防颠簸行走系统的通断。
  6. 根据权利要求1所述的装载机自动防颠簸行走系统，其特征在于：所述信号处理器(4)包括控制器(44)和比例电磁阀(45)，所述控制器(44)与比例电磁阀(45)串联设置于控制手柄(2)和油泵(1)之间，所述控制器(44)通过识别所述控制手柄(2)输出的控制信号来控制比例电磁阀(44)的开度，以达到装载机防颠簸的效果。
  7. 根据权利要求6所述的装载机自动防颠簸行走系统，其特征在于：所述所述信号处理器(4)还包括模式切换开关(42)，所述模式切换开关(42)直接控制所述控制器(44)，起到控制所述装载机自动防颠簸行走系统通断的作用。
PCT/CN2017/098928 2016-11-25 2017-08-25 装载机自动防颠簸行走系统 WO2018095088A1 (zh)

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