WO2012088863A1 - 防电击方法、装置及具有该防电击装置的工程机械 - Google Patents
防电击方法、装置及具有该防电击装置的工程机械 Download PDFInfo
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- WO2012088863A1 WO2012088863A1 PCT/CN2011/076727 CN2011076727W WO2012088863A1 WO 2012088863 A1 WO2012088863 A1 WO 2012088863A1 CN 2011076727 W CN2011076727 W CN 2011076727W WO 2012088863 A1 WO2012088863 A1 WO 2012088863A1
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- electric field
- working arm
- shock
- electric
- telescopic working
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
- G01R29/08—Measuring electromagnetic field characteristics
- G01R29/0807—Measuring electromagnetic field characteristics characterised by the application
- G01R29/0814—Field measurements related to measuring influence on or from apparatus, components or humans, e.g. in ESD, EMI, EMC, EMP testing, measuring radiation leakage; detecting presence of micro- or radiowave emitters; dosimetry; testing shielding; measurements related to lightning
- G01R29/085—Field measurements related to measuring influence on or from apparatus, components or humans, e.g. in ESD, EMI, EMC, EMP testing, measuring radiation leakage; detecting presence of micro- or radiowave emitters; dosimetry; testing shielding; measurements related to lightning for detecting presence or location of electric lines or cables
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C15/00—Safety gear
- B66C15/06—Arrangements or use of warning devices
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/88—Safety gear
Definitions
- the present invention relates to the field of construction machinery, and in particular to an anti-shock method and apparatus. Further, the present invention relates to a construction machine including the above-described electric shock prevention device.
- construction machinery with telescopic working arms can be seen everywhere, such as concrete pump trucks that install a boom and a concrete pump on a chassis of a vehicle, a cloth machine that mounts the boom on a column, and a lifting device for lifting heavy objects. Hoisting machinery, etc.
- the application range of telescopic working arms (such as the telescopic arm of cranes) is becoming wider and wider. Since the end of the working arm is usually in a high position in the air, it may be affected by factors such as the construction environment, working vision, equipment defects, and personnel misoperation, which may cause accidents of the working arm touching the high-voltage cable, resulting in casualties and property losses.
- An object of the present invention is to provide an anti-shock method, a device and a construction machine having the same, to solve the technical problem that the telescopic working arm of the construction machine touches the high-voltage cable during the operation.
- an anti-shock method for a construction machine operation comprising: detecting an electric field signal of a preset portion of a telescopic working arm of a construction machine; determining a telescopic work according to the electric field signal The relationship between the distance between the arm and the high-voltage cable and the preset distance, and the control signal is issued according to the determined result. Further, the determining result includes: the distance between the telescopic working arm and the high voltage cable is less than the first preset distance; and the control signal comprises: a signal for controlling the alarm light or a signal for controlling the alarm.
- an anti-shock device for working in a construction machine for implementing the above-mentioned anti-shock method, comprising: an electric field sensing sensor disposed at a preset portion of the telescopic working arm for detecting The electric field signal of the high voltage cable is preset at the end or any position of the telescopic working arm; the controller is electrically connected to the electric field sensing sensor for receiving the electric field signal and issuing a control signal according to the electric field signal.
- the electric field sensing sensor and the controller are connected by a shielded cable.
- the anti-shock device provided by the present invention further includes a display device electrically connected to the controller for displaying an operating state parameter of the telescopic working arm and inputting a preset parameter.
- the anti-shock device provided by the present invention further includes an alarm light and/or an alarm bar connected to the alarm control signal output end of the controller.
- the electric field inductive sensor includes an inductive antenna and a dedicated electric field inductive sensor.
- the sensing antenna includes a braided antenna disposed at a predetermined portion of the telescopic working arm, a cable sensor disposed in the middle, and a shielded signal cable disposed at the front end, wherein the braided antenna is internally provided with a high voltage electric field sensing element.
- a construction machine having a telescopic working arm, the construction machine further comprising the above-described anti-shock device.
- the invention has the following beneficial effects:
- the electric field sensing sensor can detect all high voltage levels of the high voltage range covering 380 volts and above, and the controller can determine the electric field strength detected by the electric field sensing sensor in real time, and judge the telescopic working arm of the engineering machine and The distance between the high-voltage cables, once the distance is less than the predetermined safety distance, the controller can issue an alarm control signal, and the operator or the device's own actuator can take corresponding safety measures to effectively prevent the boom from touching the high-voltage overhead wires. It is beneficial to the construction machinery equipment to work safer and more reliable, improve the construction efficiency, at the same time, can improve the service life of the equipment and has high economic value.
- FIG. 1 is a schematic flow chart of a method for preventing electric shock according to a preferred embodiment of the present invention
- FIG. 2 is a schematic block diagram showing the structure of an electric shock prevention device according to a preferred embodiment of the present invention. And device mounting distribution diagram
- Figure 4 is a schematic diagram of electric field sensing.
- an anti-shock method for an engineering machine and an anti-shock device for implementing the method are provided.
- 1 is a schematic flow chart of a method for preventing electric shock according to a preferred embodiment of the present invention, as shown in FIG.
- the anti-shock method provided by the present invention includes:
- S01 detecting an electric field signal of a preset part of the telescopic working arm of the construction machine; S02: determining a relationship between a distance between the telescopic working arm and the high-voltage cable and a preset distance according to the electric field signal, and issuing a control signal according to the determination result.
- the above determination result may include two situations, and in each case, corresponding control measures are taken: In the first case, the distance between the telescopic working arm and the high voltage cable is less than the first preset distance, then the signal of the warning light is controlled or Controlling the signal of the alarm à p eight; In the second case, if the distance between the telescopic working arm and the high voltage cable is less than the second preset distance, the telescopic working arm is controlled to stop moving or move in the opposite direction.
- FIG. 2 is a schematic block diagram of a structure of an anti-shock device according to a preferred embodiment of the present invention.
- FIG. 3 is a schematic view showing a distribution of a telescopic working arm and a device for distributing a cloth rod according to a preferred embodiment of the present invention.
- the anti-shock device may include a controller 9, a display device 12, a shielded cable 6, a connecting cable 13, an electric field sensing sensor 8, a warning light 10, and a warning horn 11.
- the controller 9 is connected to the display device 12 via a connecting cable 13.
- the controller 9 is connected to the electric field sensing sensor 8 through the shielded cable 6, so that the accuracy of the data entering the controller 9 can be ensured and the interference can be prevented.
- the controller 9 can be connected to the warning lights 10 and 4 to the alarm horn n at the same time.
- the electric field inductive sensor 8 may be disposed at the end of the telescopic working arm 3.
- the electric field inductive sensor 8 is used to detect the electric field strength of the space in which the end of the telescopic working arm 3 is located.
- the controller 9 and the electric field sensing sensor 8 may also be connected by a part of the shielded cable 6, and the remaining parts are connected by non-blanking cables.
- the electric field sensing sensor 8 may include an inductive antenna and a dedicated electric field inductive sensor, etc., wherein the inductive antenna is mainly composed of three parts, including a braided antenna mounted at the end of the telescopic working arm, a base end mounted on the telescopic working arm, and a telescopic working arm.
- a cable sensor that extends and connects the antenna and the shielded signal cable.
- the inside of the braided antenna is packaged with a high-voltage electric field sensing element capable of sensing the electric field strength with high sensitivity, and mainly detecting the electric field intensity near the end region of the telescopic working arm.
- the electric field sensing sensor can cover all the boom parts to ensure the safe operation of the whole boom.
- the controller 9 can use various types of PLCs, special controllers, single-chip microcomputers, etc. It is the core of the entire control system, and can perform functions such as data analysis processing and control algorithm implementation.
- a shielded cable may be provided between the controller 9 and the electric field inductive sensor 8.
- the controller 9 monitors the intensity of the electric field sensing of the telescopic working arm 3 in real time by processing and analyzing the data collected by the electric field sensing sensor 8, and determines the working condition of the device according to the electric field strength.
- the display device 12 can use a text display, an LCD liquid crystal display or a touch screen to display related parameters such as the working state of the telescopic working arm in real time and can set initial parameters through the display screen.
- the communication between the controller 9 and each of the associated devices can utilize the connection cable 13 to implement CAN bus communication, 232 bus communication, 485 bus communication, and the like.
- 4 is a schematic diagram of electric field induction, and in conjunction with FIG. 4, the anti-shock method provided by the present invention will be described below by taking the cloth boom telescopic working arm of the distributing machine as an example.
- the electric field sensing sensor 8 can detect all high voltage levels covering 380 volts and above, and by default, the detection sensitivity and the alarm threshold are reasonable.
- the electric field signal detected by the electric field inductive sensor 8 is sent to the controller 9, converted into a digital quantity in the controller 9, and the electric field intensity of the end of the telescopic working arm 3 is monitored in real time, and it is judged whether the distributing machine is in a safe working state by repeated comparison and analysis. .
- the safe working sensing distance and the minimum sensing distance of the telescopic working arm 3, that is, the first preset distance and the second preset distance can be manually set.
- the two sensing distances can be used as the judgment basis of the controller 9.
- Alarm lamp 10 or 4 alarm horn 11 when the telescopic working arm 3 moves to a distance from the high voltage overhead cable less than the minimum sensing distance, the telescopic working arm 3 is further moved to the dangerous area or the telescopic working arm 3 can only be safely The area moves to ensure the safety of construction machinery and operators.
- the working safety sensing distance and the minimum sensing distance of the telescopic working arm of the pumping vehicle are automatically set, that is, the first preset distance and the second preset distance, real-time monitoring and expansion
- the movement tendency of the working arm 3 is timely alarmed when the telescopic working arm 3 moves to the dangerous area.
- the telescopic working arm 3 is restricted from moving, and only the telescopic working arm 3 is allowed to move to the safe area.
- the safe working sensing distance between the telescopic working arm 3 and the high-voltage cable can be manually set or automatically set by the display device 12 and the controller 9.
- the manual setting is mainly based on the construction site environment and the operator's field experience, and the automatic setting is mainly According to the historical storage safety work sensing distance data of the controller 9, the statistical analysis automatically selects the optimal value as the safe working sensing distance.
- the controller 9 limits the movement of the telescopic working arm 3, or the telescopic working arm 3 Stop the movement completely, or only allow the telescopic working arm 3 to move in the opposite direction, that is, the safe area.
- the display device 12 displays the working safety level of the distributing machine in real time.
- the alarm prompt includes the alarm light flashing and the alarm horn sounding.
- the telescopic working arm 3 moves to less than the minimum sensing distance, the telescopic working arm 3 is restricted from moving to the dangerous area, and the alarm prompt is intensified.
- the specific performance is that the warning light 10 flashes faster and the alarm horn is rushed.
- the telescopic control can be simultaneously controlled. The working arm 3 moves in the direction of the safe area.
- the anti-shock device uses bus communication, and the controller 9 facilitates communication with the host computer and the like, and simplifies the system structure to ensure timely communication; the controller 9 can automatically or manually set the safe working sensing distance of the telescopic working arm 3. And the minimum sensing distance, through the analysis and processing of the sensor data, real-time monitoring of the working condition of the pump truck and the operation of the alarm and the restriction of the boom movement to ensure the safety of the pump truck and the operator, which is more conducive to the safety and reliability of the construction machinery and equipment. Work to improve construction efficiency. At the same time, it can improve the service life of the equipment and has great economic value.
- the anti-shock method provided by the invention and the anti-shock device for implementing the method have strong versatility and can be applied to all construction machinery equipment using a telescopic boom, such as concrete pump truck, cloth machine, all-terrain crane, automobile Cranes, etc.
- a construction machine having the above-mentioned electric shock prevention device the construction machine having a telescopic working arm capable of performing movements such as expansion and contraction, and the like, in order to improve the safety of the construction machine, the engineering
- the machine also includes the above-described anti-shock device.
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- Mechanical Engineering (AREA)
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- Electromagnetism (AREA)
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- Component Parts Of Construction Machinery (AREA)
- Forklifts And Lifting Vehicles (AREA)
Description
防电击方法、 装置及具有该防电击装置的工程枳械 本申请要求于 2010年 12月 31 日提交至中国国家知识产权局、 申请号为 201010620990.0、 发明名称为"防电击方法、 装置及具有该防电击装置的工程机 械"的专利申请的优先权。 技术领域 本发明涉及工程机械领域， 特别地， 涉及一种防电击方法、 装置。 此外， 本发明还涉及一种包括上述防电击装置的工程机械。 背景技术 当今， 带伸缩工作臂的工程机械设备随处可见， 如将布料杆及混凝土输送 泵安装在汽车底盘上的混凝土泵车， 将布料杆装设在立柱上的布料机及用于吊 装重物的起重机械等。 随着工程机械的飞速发展， 伸缩工作臂 （如起重机的伸缩臂） 的应用范围 越来越广。 由于工作臂的末端通常处于空中较高的位置， 会受到施工环境、 工 作视野、 设备自身缺陷， 以及人员误操作等因素的影响而发生工作臂触及高压 电缆的事故， 造成人员伤亡及财产损失， 而且此类事故的发生呈现逐渐增多的 趋势。 因此， 有必要釆取一定的措施， 防止伸缩工作臂在工作中发生触及高压电 缆的事故发生， 提高工作臂工作的安全性。 发明内容 本发明目的在于提供一种防电击方法、 装置及具有该防电击装置的工程机 械， 以解决工程机械的伸缩工作臂在作业过程中触及高压电缆的技术问题。 为解决上述技术问题， 根据本发明的一个方面， 提供了一种工程机械作业 时的防电击方法， 包括： 检测工程机械的伸缩工作臂的预设部位的电场信号； 根据该电场信号确定伸缩工作臂与高压电缆之间的距离与预设距离的大小关 系， 并才艮据确定结果发出控制信号。
进一步地， 确定结果包括： 伸缩工作臂与高压电缆之间的距离小于第一预 设距离； 控制信号包括： 控制报警灯的信号或控制报警喇八的信号。 进一步地， 确定结果包括： 控制工作臂与高压电缆之间的距离小于第二预 设距离； 控制信号包括： 控制伸缩工作臂停止移动或向反方向移动。 居本发明的另一个方面， 还提供了一种工程机械作业时的防电击装置， 用于实施上述防电击方法， 其包括： 电场感应传感器， 设置在伸缩工作臂的预 设部位， 用于检测高压电缆的电场信号， 预设部位为伸缩工作臂的末端或任一 位置； 控制器， 与电场感应传感器电连接， 用于接收电场信号并根据电场信号 发出控制信号。 进一步地， 电场感应传感器与控制器之间通过屏蔽电缆连接。 进一步地， 本发明所提供的防电击装置， 还包括显示装置， 与控制器电连 接， 用于显示伸缩工作臂的工作状态参数及输入预设参数。 进一步地， 本发明所提供的防电击装置， 还包括与控制器的报警控制信号 输出端连接的报警灯和 /或报警喇八。 进一步地， 电场感应传感器包括感应天线和专用电场感应传感器。 进一步地， 感应天线包括设置于伸缩工作臂预设部位的辫状天线、 设置于 中间的缆状传感器， 以及设置于前端的屏蔽信号缆， 其中辫状天线内部设置有 高压电场感应元件。 根据本发明的又一个方面， 还提供了一种工程机械， 具有伸缩工作臂， 该 工程机械还包括上述防电击装置。 本发明具有以下有益效果： 通过电场感应传感器可以检测高压范围涵盖三百八十伏及以上的所有高 压等级， 控制器可以通过该电场感应传感器实时检测的电场强度， 判断工程机 械的伸缩工作臂与高压电缆之间的距离， 一旦该距离小于预定安全距离， 控制 器就可以发出报警控制信号， 由操作人员或设备自身的执行机构釆取相应的安 全措施， 有效地预防臂架触及高压架空电线， 有利于工程机械设备更加安全可 靠地工作， 提高施工效率， 同时， 可以提高设备的使用寿命， 具有较高的经济 价值。
除了上面所描述的目的、 特征和优点之外， 本发明还有其它的目的、 特征 和优点。 下面^ 1参照图， 对本发明作进一步详细的说明。 附图说明 构成本申请的一部分的附图用来提供对本发明的进一步理解， 本发明的示 意性实施例及其说明用于解释本发明， 并不构成对本发明的不当限定。 在附图 中： 图 1是本发明优选实施例的防电击方法流程示意图； 图 2是本发明优选实施例的防电击装置结构示意框图； 图 3是本发明优选实施例的布料杆伸缩工作臂及器件安装分布示意图； 以 及 图 4是电场感应示意图。 具体实施方式 以下结合附图对本发明的实施例进行详细说明， 但是本发明可以由权利要 求限定和覆盖的多种不同方式实施。 居本发明的一个方面， 提供了一种工程机戈作业时的防电击方法及用于 实现该方法的防电击装置。图 1是本发明优选实施例的防电击方法流程示意图， 如图 1所示。 本发明提供的防电击方法包括：
S01 : 检测工程机械的伸缩工作臂的预设部位的电场信号； S02: 根据上述电场信号确定伸缩工作臂与高压电缆之间的距离与预设距 离的大小关系， 并根据确定结果发出控制信号。 上述确定结果可以包括两种情况， 在每种情况下釆取相应的控制措施： 第一种情况， 伸缩工作臂与高压电缆之间的距离小于第一预设距离， 则控 制报警灯的信号或控制报警喇 p八的信号；
第二种情况， 伸缩工作臂与高压电缆之间的距离小于第二预设距离， 则控 制伸缩工作臂停止移动或向反方向移动。 也就是说， 当伸缩工作臂与高压电缆之间的距离不同时， 危险等级不同， 所釆取的控制程度也不相同， 第一预设距离应该大于第二预设距离， 也就是说 当伸缩工作臂与高压电缆之间的距离较大时， 仅釆取报警提示， 当伸缩工作臂 与高压电缆之间的距离变的较小时， 则直接控制工作臂停止移动或反向移动。 图 2是本发明优选实施例的防电击装置结构示意框图， 图 3是本发明优选 实施例的布料杆伸缩工作臂及器件安装分布示意图， 下面以布料机的布料杆工 作臂为例， 结合图 2和图 3对本发明所提供的防电击装置进行说明。 该防电击装置可以包括控制器 9、显示装置 12、 屏蔽电缆 6、 连接电缆 13、 电场感应传感器 8、 4艮警灯 10及 4艮警喇叭 11。 控制器 9与显示装置 12通过连 接电缆 13相连， 控制器 9与电场感应传感器 8通过屏蔽电缆 6相连， 可以保 证进入控制器 9的数据的准确， 防止千扰。 控制器 9可以同时与报警灯 10和 4艮警喇叭 n相连。 电场感应传感器 8可以设置在伸缩工作臂 3的末端。 电场 感应传感器 8用来检测伸缩工作臂 3的末端所处空间的电场强度。 考虑到成本 及安装便利性的需求， 控制器 9与电场感应传感器 8之间也可以釆用一部分屏 蔽电缆 6连接， 其余部分釆用非展蔽电缆连接。 电场感应传感器 8可以包括感 应天线和专用电场感应传感器等， 其中， 感应天线主要由三部分组成， 包括安 装在伸缩工作臂末端的辫状天线、 安装在伸缩工作臂基端的、 以及在伸缩工作 臂中延伸并连接辫状天线和屏蔽信号缆的缆状传感器。 辫状天线的内部封装有 高压电场感应元件， 该高压电场感应元件能够高灵敏度地感应电场强度， 主要 检测靠近伸缩工作臂末端区域的电场强度。 电场感应传感器可覆盖所有臂架部 分，保证整个臂架安全工作， 电场感应传感器与控制器之间通过屏蔽电缆相连， 保证进入控制器数据准确， 防止千扰。 电场感应传感器 8的所有曝露在外的部分都按照防护等级 IP65及以上等级 来设计， 均为防腐耐油绝缘材料， 保证传感器可靠稳定地工作。 控制器 9可以釆用各类 PLC、 专用控制器、 单片机等， 它是整个控制系统 的核心， 能够完成数据分析处理、 控制算法实现等功能。 控制器 9与电场感应 传感器 8之间可以为屏蔽电缆。 控制器 9通过对电场感应传感器 8所釆集数据 的处理和分析， 实时监控伸缩工作臂 3所处电场感应的强度， 并依据此电场强 度判断设备工作状况。
显示装置 12可以釆用文本显示器、 LCD液晶显示屏或触摸屏等， 用来实 时显示伸缩工作臂的工作状态等相关参数并可通过显示屏进行初始参数的设 置。 控制器 9与各个相关的设备之间的通信可以利用连接电缆 13实现 CAN总 线通信、 232总线通信、 485总线通信等。 图 4是电场感应示意图， 再结合图 4, 下面仍然以布料机的布料杆伸缩工 作臂为例对本发明提供的防电击方法进行说明。 电场感应传感器 8可检测涵盖三百八十伏及其以上的所有高压等级， 并且 默认情况下， 检测灵敏度以及报警阀值是合理的。 电场感应传感器 8检测到的 电场信号发送给控制器 9, 在控制器 9中转换为数字量， 实时监控伸缩工作臂 3的末端的电场强度，并通过反复比较分析判断布料机是否处于安全工作状态。 才艮据现场施工的实际情况， 可以手动设定伸缩工作臂 3的安全工作感应距 离及最小感应距离， 即第一预设距离和第二预设距离。 这两个感应距离可以作 为控制器 9的判断依据， 当伸缩工作臂 3移动到离高压架空电缆的距离少于设 定的安全工作感应距离时， 进行报警等相关提示， 具体地说， 可以控制报警灯 10或 4艮警喇叭 11 , 当伸缩工作臂 3移动到离高压架空电缆的距离少于最小感 应距离时则限制伸缩工作臂 3进一步向危险区域移动或者控制伸缩工作臂 3只 可以向安全区域移动， 保证工程机械及操作人员的安全。 通过对电场感应传感器 8釆集的数据的分析和处理， 自动设定泵车的伸缩 工作臂的工作安全感应距离及最小感应距离， 即第一预设距离和第二预设距 离， 实时监控伸缩工作臂 3的移动趋势， 当伸缩工作臂 3往危险区域移动时则 适时报警提示， 当超出最小感应区域时则限制伸缩工作臂 3动作， 只允许伸缩 工作臂 3往安全区域移动。 伸缩工作臂 3与高压电缆之间的安全工作感应距离可通过显示装置 12和 控制器 9进行手动设定或自动设定， 手动设定主要依据施工现场环境及操作人 员现场经验， 自动设定主要依据控制器 9的历史存储安全工作感应距离数据进 行统计分析自动选取最优值作为安全工作感应距离。 实时监控伸缩工作臂 3的 移动趋势， 当伸缩工作臂 3向危险区域移动时则适时地发出报警提示， 当小于 最小感应距离时则由控制器 9限制伸缩工作臂 3移动， 或者使伸缩工作臂 3完 全停止运动， 或者只允许伸缩工作臂 3向反方向， 即安全区域移动。
显示装置 12 实时显示布料机的工作安全等级， 当伸缩工作臂 3移动到安 全感应距离以外时则报警提示操作人员， 报警提示包括报警灯闪烁及报警喇叭 发出声呜。 当伸缩工作臂 3移动到小于最小感应距离时则限制伸缩工作臂 3向 危险区域动作， 报警提示加剧， 具体表现为报警灯 10 闪烁频率加快及报警喇 叭声呜急促， 此外， 还可以同时控制伸缩工作臂 3向安全区域方向动作。 本发明所提供的防电击装置釆用总线通信， 控制器 9便于与上位机等进行 通信， 简化系统结构保障通信及时； 可利用控制器 9 自动或手动设定伸缩工作 臂 3的安全工作感应距离及最小感应距离， 通过对传感器数据的分析和处理， 实时监控泵车工作状况并通过报警提示及限制臂架动作等操作切实保证泵车 及操作人员的安全，有利于工程机械设备更加安全可靠的工作，提高施工效率。 同时， 可以提高设备的使用寿命， 具有极强的经济价值。 本发明提供的防电击方法及用于实施该方法的防电击装置具有较强的通 用性， 可以适用于所有使用伸缩臂架的工程机械设备， 如混凝土泵车、 布料机、 全地面起重机、 汽车起重机等。 居本发明的又一个方面， 还提供了一种具有上述防电击装置的工程机 械， 该工程机械具有可作伸缩以及变幅等动作的伸缩工作臂， 为了提高该工程 机械的安全性， 该工程机械还包括上述防电击装置。 以上所述仅为本发明的优选实施例而已， 并不用于限制本发明， 对于本领 域的技术人员来说， 本发明可以有各种更改和变化。 凡在本发明的 ^"神和原则 之内， 所作的任何修改、 等同替换、 改进等， 均应包含在本发明的保护范围之 内。
Claims
1. 一种工程机戈作业时的防电击方法， 其特征在于， 包括:
检测所述工程机械的伸缩工作臂的预设部位的电场信号； 根据所述电场信号确定所述伸缩工作臂与产生所述电场信号的带电 电缆之间的距离与预设距离的大小关系， 并根据确定结果发出防电击控 制信号。
2. 根据权利要求 1所述的防电击方法， 其特征在于，
所述确定结果包括： 所述伸缩工作臂与所述带电电缆之间的距离小 于第一预设距离；
所述防电击控制信号包括： 控制报警灯的信号或控制报警喇八的信 号。
3. 根据权利要求 1所述的方法， 其特征在于，
所述确定结果包括： 所述伸缩工作臂与电缆之间的距离小于第二预 设巨离；
所述防电击控制信号包括： 控制所述伸缩工作臂停止移动或向反方 向移动。
4. 一种工程机械作业时的防电击装置， 用于实施权利要求 1至 3中任一项 所述的防电击方法， 其特征在于， 包括：
电场感应传感器 （8 ), 设置在伸缩工作臂的预设部位， 用于检测所 述带电电缆的电场信号， 所述预设部位为所述伸缩工作臂的末端或任一 位置；
控制器（9 ), 与所述电场感应传感器（8 ) 电连接， 用于接收所述电 场信号并根据所述电场信号发出防电击控制信号。
5. 根据权利要求 4所述的防电击装置， 其特征在于， 所述电场感应传感器
( 8 ) 与所述控制器 （9 )之间通过屏蔽电缆 （6 ) 连接。
6. 根据权利要求 4所述的防电击装置，其特征在于，还包括显示装置（ 12 ), 与所述控制器（9)电连接， 用于显示所述伸缩工作臂的工作状态参数及 输入预设参数。
7. 根据权利要求 4所述的防电击装置， 其特征在于， 还包括与所述控制器
(9) 的报警控制信号输出端连接的报警灯 （ 10) 和 /或报警喇叭（ 11)。
8. 根据权利要求 4所述的防电击装置， 其特征在于， 所述电场感应传感器
(8) 包括感应天线和专用电场感应传感器。
9. 根据权利要求 8所述的防电击装置， 其特征在于， 所述感应天线包括设 置于所述伸缩工作臂预设部位的辫状天线、 设置于中间的缆状传感器， 以及设置于前端的屏蔽信号缆， 所述辫状天线内部设置有高压电场感应 元件。
10. —种工程机械， 具有伸缩工作臂， 其特征在于， 包括权利要求 4至 9中 任一项所述的防电击装置。
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| CN103159137A (zh) * | 2013-03-13 | 2013-06-19 | 江苏创导电气有限公司 | 一种起重机近电报警器 |
| CN104071715A (zh) * | 2014-07-01 | 2014-10-01 | 国家电网公司 | 施工吊车近电安全预警方法 |
| CN104571143A (zh) * | 2014-12-04 | 2015-04-29 | 长沙中联消防机械有限公司 | 一种工程机械的臂架控制系统、方法、装置及工程机械 |
| CN105363156A (zh) * | 2015-10-28 | 2016-03-02 | 徐州重型机械有限公司 | 一种能够高压电感应的方法及其举高消防车 |
| CN105425053A (zh) * | 2015-11-30 | 2016-03-23 | 国网浙江省电力公司宁波供电公司 | 一种用于电场报警的方法及装置 |
| CN106976805A (zh) * | 2016-01-19 | 2017-07-25 | 广西送变电建设公司 | 一种起吊设备的安全距离控制系统 |
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