CN203976235U - Electric block energy efficiency testing device - Google Patents
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Abstract
本实用新型公开了一种电动葫芦能效测试装置，用于对电动葫芦进行能效测试和能效等级评价，装置结构包括电压电流转换模块、电压电流采样模块、电能计量模块、微处理器模块、起升速度测量模块、通信模块和人机交互模块。本实用新型通过测量电动葫芦在若干个循环运行周期内完成起升动作所输入的能量，电动葫芦在规定的工作周期内完成起升动作所产生的势能变化值，根据电动葫芦的工作级别，得到电动葫芦的耗能、能效和能效等级。装置便捷灵活，可不依赖于电动葫芦试验台，可在电动葫芦试验室的试验台上以及在用起重机上进行测试，对电动葫芦的节能审查和监管、推广电动葫芦节能技术、建立资源节约型社会具有重要意义。
The utility model discloses an electric hoist energy efficiency testing device, which is used for energy efficiency testing and energy efficiency grade evaluation of the electric hoist. Speed measurement module, communication module and human-computer interaction module. The utility model measures the energy input by the electric hoist to complete the lifting action in several cycle operation periods, and the potential energy change value generated by the electric hoist when the electric hoist completes the lifting action in the specified working cycle, and according to the working level of the electric hoist, it can be obtained Energy consumption, energy efficiency and energy efficiency class of electric hoists. The device is convenient and flexible, and it does not depend on the electric hoist test bench. It can be tested on the test bench of the electric hoist laboratory and on the crane in use, to review and supervise the energy saving of the electric hoist, to promote the energy saving technology of the electric hoist, and to establish a resource-saving society. is of great significance.
Description
技术领域technical field
本实用新型涉及电动葫芦，尤其涉及一种电动葫芦能效测试装置。The utility model relates to an electric hoist, in particular to an energy efficiency testing device for an electric hoist.
背景技术Background technique
电动葫芦因其结构紧凑、制造方便、安装简易、维修简单、价格低廉以及操作灵活等特点，已经广泛应用于起重机的起升机构。自20世纪50年代中期，我国起重葫芦行业经过几十年的发展，无论是企业数量、规模还是就业人数都已经位居世界前列，据不完全统计，2013年底我国有电动葫芦生产企业近400家，年产量90余万台，未来几年，我国电动葫芦市场仍将保持超过40％的平均增速。按照目前我国使用电动葫芦的平均时间计算，使用节能30％的变频电动葫芦，8年至少可节约2000元左右，全国都使用可节省4000亿元，而若使用节能50％以上的直流变频电动葫芦，全国至少可节省6600亿人民币。据国内电力环境专家核算：每节约1度电，就可以减少0.272千克的炭粉尘、0.997千克的二氧化碳、0.03千克的二氧化硫、0.015千克的碳氧等污染物的排放，可见做好电动葫芦行业的节能工作具有极其重要的现实意义。Because of its compact structure, convenient manufacture, simple installation, simple maintenance, low price and flexible operation, the electric hoist has been widely used in the lifting mechanism of cranes. Since the mid-1950s, my country's lifting hoist industry has been developing for decades, and it has ranked among the top in the world in terms of the number of companies, scale and employment. According to incomplete statistics, there were nearly 400 electric hoist manufacturers in my country by the end of 2013. Home, with an annual output of more than 900,000 units, in the next few years, my country's electric hoist market will still maintain an average growth rate of more than 40%. According to the current average time of using electric hoists in my country, the use of 30% energy-saving frequency conversion electric hoists can save at least 2,000 yuan in 8 years, and 400 billion yuan can be saved if used nationwide. , the country can save at least 660 billion yuan. According to the calculation of domestic electric power environment experts: every 1 degree of electricity saved can reduce the emission of 0.272 kg of carbon dust, 0.997 kg of carbon dioxide, 0.03 kg of sulfur dioxide, and 0.015 kg of carbon and oxygen. It can be seen that the electric hoist industry is doing well. Energy saving work has extremely important practical significance.
作为特种设备重要组成部分的起重机械，至今还没有关于能效测试、评价方面的专用设备，这与全国都在兴起的节能热潮的形势不相符。对于电动葫芦而言，市场上更没有电动葫芦能效测试装置。目前的电动葫芦型式试验和产品质量检验试验台仅能控制电动葫芦动作和对电参数的简单采集，没有数据积分处理等功能，不能满足电动葫芦能效测试需要，对电动葫芦生产和使用的节能监管以及节能监测都带来了困难，因此，亟需一种简单可行的电动葫芦能效测试仪器。As an important part of special equipment, hoisting machinery has not yet had special equipment for energy efficiency testing and evaluation, which is inconsistent with the rising energy-saving boom in the whole country. For electric hoists, there is no electric hoist energy efficiency testing device on the market. The current electric hoist type test and product quality inspection test bench can only control the action of the electric hoist and simple collection of electrical parameters, without functions such as data integration processing, and cannot meet the needs of the energy efficiency test of the electric hoist and the energy-saving supervision of the production and use of the electric hoist And energy-saving monitoring has brought difficulties, therefore, there is an urgent need for a simple and feasible electric hoist energy efficiency testing instrument.
实用新型内容Utility model content
针对目前电动葫芦的能效测试没有简单可行的测试仪器的问题，申请人经验研究改进，提供一种电动葫芦能效测试装置。Aiming at the problem that there is no simple and feasible test instrument for the energy efficiency test of the electric hoist at present, the applicant provides an energy efficiency test device for the electric hoist through empirical research and improvement.
本实用新型的技术方案如下：The technical scheme of the utility model is as follows:
本实用新型提供一种电动葫芦能效测试装置，包括电压电流转换模块、电压电流采样模块、电能计量模块、微处理器模块、起升速度测量模块、通信模块和人机交互模块；The utility model provides an electric hoist energy efficiency testing device, comprising a voltage and current conversion module, a voltage and current sampling module, an electric energy measurement module, a microprocessor module, a lifting speed measurement module, a communication module and a human-computer interaction module;
所述电压电流转换模块，由互感器组成，互感器的一次侧接入电动葫芦供电回路，互感器的二次侧接入电压电流采样模块，将电动葫芦主电路的大电流、电压信号转换为等效的小电流、电压信号，实现供电回路和测量回路的隔离；The voltage and current conversion module is composed of transformers, the primary side of the transformer is connected to the electric hoist power supply circuit, and the secondary side of the transformer is connected to the voltage and current sampling module, which converts the large current and voltage signals of the main circuit of the electric hoist into Equivalent small current and voltage signals to realize the isolation of power supply circuit and measurement circuit;
所述电压电流采样模块，由智能电表组成，接入电压电流转换模块的互感器的二次侧，通过对互感器的二次侧的电压、电流回路的交流采样，实现对电网中三相电压、三相电流、有功功率、无功功率、功率因数、频率和四象限电能的高精度测量；The voltage and current sampling module is composed of a smart meter, which is connected to the secondary side of the transformer of the voltage and current conversion module, and realizes the three-phase voltage in the power grid through the AC sampling of the voltage and current loop on the secondary side of the transformer. , Three-phase current, active power, reactive power, power factor, frequency and high-precision measurement of four-quadrant electric energy;
所述电能计量模块，与电压电流采样模块连接，用于将电压电流采样模块采样后的电压、电流转换成随功率变换的脉冲信号；The electric energy metering module is connected with the voltage and current sampling module, and is used to convert the voltage and current sampled by the voltage and current sampling module into pulse signals that vary with power;
所述微处理器模块，与电能计量模块连接，接收到电能计量模块的功率脉冲信号后，计算电压、电流、功率参数，并根据设置的参数控制电能计量模块的工作方式，同时显示测量值，并通过RS485总线和上位计算机进行通信；The microprocessor module is connected with the electric energy metering module, after receiving the power pulse signal of the electric energy metering module, calculates the voltage, current and power parameters, and controls the working mode of the electric energy metering module according to the set parameters, and displays the measured value at the same time, And communicate with the upper computer through the RS485 bus;
所述起升速度测量模块，由起重机速度位移测量仪组成，用于感测电动葫芦起升和下降速度，兼有距离测量的功能，完成起升高度、吊钩限位高度等距离指标的检测，起升速度的测量结果输入人机交互模块；The lifting speed measurement module is composed of a crane speed displacement measuring instrument, which is used to sense the lifting and lowering speed of the electric hoist, and also has the function of distance measurement, and completes the detection of distance indicators such as lifting height and hook limit height , the measurement result of the lifting speed is input into the human-computer interaction module;
所述通讯模块，与微处理器模块和人机交互模块连接，用于微处理器模块与人机交互模块之间的数据交换和控制；The communication module is connected with the microprocessor module and the human-computer interaction module, and is used for data exchange and control between the microprocessor module and the human-computer interaction module;
所述人机交互模块，通过通讯模块与微处理器模块连接，用于参数输入、测试控制、数据处理、数据显示和系统设置。The man-machine interaction module is connected with the microprocessor module through the communication module, and is used for parameter input, test control, data processing, data display and system setting.
本实用新型的有益技术效果是：The beneficial technical effect of the utility model is:
本实用新型的电动葫芦能效测试装置是对电动葫芦进行能效测试和能效等级评价的重要设备，通过测量电动葫芦在若干个循环运行周期内完成起升动作所输入的能量，电动葫芦在规定的工作周期内完成起升动作所产生的势能变化值，根据电动葫芦的工作级别得到电动葫芦的耗能、能效和能效等级。装置便捷灵活，可不依赖于电动葫芦试验台，可在电动葫芦试验室的试验台上以及在用起重机上进行测试，对电动葫芦的节能审查和监管、推广电动葫芦节能技术、建立资源节约型社会具有重要意义。The electric hoist energy efficiency testing device of the utility model is an important equipment for energy efficiency testing and energy efficiency grade evaluation of the electric hoist. By measuring the energy input by the electric hoist to complete the lifting action in several operating cycles, the electric hoist can perform the specified work. The energy consumption, energy efficiency and energy efficiency level of the electric hoist can be obtained according to the working level of the electric hoist according to the potential energy change value generated by the lifting action within the cycle. The device is convenient and flexible, and it does not depend on the electric hoist test bench. It can be tested on the test bench of the electric hoist laboratory and on the crane in use, to review and supervise the energy saving of the electric hoist, to promote the energy saving technology of the electric hoist, and to establish a resource-saving society. is of great significance.
附图说明Description of drawings
图1是电动葫芦能效测试装置结构图。Figure 1 is a structural diagram of an electric hoist energy efficiency testing device.
图2是三相三线制电动葫芦能效测试接线图。Figure 2 is a wiring diagram for the energy efficiency test of a three-phase three-wire electric hoist.
图3是三相四线制电动葫芦能效测试接线图。Figure 3 is a wiring diagram for the energy efficiency test of a three-phase four-wire electric hoist.
图4是电流互感器的工作原理图。Figure 4 is a schematic diagram of the working principle of the current transformer.
具体实施方式Detailed ways
下面结合附图对本实用新型的具体实施方式做进一步说明。Below in conjunction with accompanying drawing, the specific embodiment of the present utility model is described further.
如图1所示，本实用新型的电动葫芦能效测试装置，包括：电压电流转换模块1、电压电流采样模块2、电能计量模块3、微处理器模块4、起升速度测量模块5、通信模块6以及人机交互模块7。As shown in Figure 1, the electric hoist energy efficiency testing device of the present invention includes: a voltage-current conversion module 1, a voltage-current sampling module 2, an electric energy measurement module 3, a microprocessor module 4, a lifting speed measurement module 5, and a communication module 6 and human-computer interaction module 7.
电压电流转换模块1由互感器组成，互感器的一次侧接入电动葫芦主供电回路，互感器的二次侧接入电压电流采样模块2，将电动葫芦主电路的大电流、电压信号转换为等效的小电流、电压信号，实现了高电压、大电流信号至小信号的转换，同时实现了供电回路和测量回路的隔离，提高了装置的抗干扰能力。The voltage and current conversion module 1 is composed of transformers. The primary side of the transformer is connected to the main power supply circuit of the electric hoist, and the secondary side of the transformer is connected to the voltage and current sampling module 2, which converts the large current and voltage signals of the main circuit of the electric hoist into The equivalent small current and voltage signals realize the conversion of high voltage and high current signals to small signals, and at the same time realize the isolation of the power supply circuit and the measurement circuit, which improves the anti-interference ability of the device.
电压电流采样模块2由智能电表组成，通过对电压、电流回路的交流采样，经处理后实现对电网中三相电压、三相电流、有功功率、无功功率、功率因数、频率和四象限电能的高精度测量。The voltage and current sampling module 2 is composed of smart meters. Through the AC sampling of the voltage and current loops, the three-phase voltage, three-phase current, active power, reactive power, power factor, frequency and four-quadrant electric energy in the power grid are realized after processing. high-precision measurement.
电能计量模块3，用于计量电压、电流，并计算视在功率(VA)、功率因素有功功率等参数。采样后的电压、电流经由电能计量模块3转换成随功率变换的脉冲信号。Electric energy metering module 3, used to measure voltage and current, and calculate apparent power (VA) and power factor Parameters such as active power. The sampled voltage and current are converted into pulse signals that vary with power through the electric energy metering module 3 .
微处理器模块4，微处理器模块4接收到功率脉冲信号后计算电压、电流、功率等参数，并根据设置的参数控制电能计量模块3的工作方式，同时显示测量值，并通过RS485总线和上位计算机进行通信。Microprocessor module 4, after receiving the power pulse signal, the microprocessor module 4 calculates parameters such as voltage, current and power, and controls the working mode of the electric energy metering module 3 according to the set parameters, and displays the measured value at the same time, and transmits the measured value through the RS485 bus and The host computer communicates.
起升速度测量模块5，采用CSDM-1起重机速度位移测量仪，用于感测电动葫芦起升和下降速度，同时兼有距离测量的功能，能够完成起升高度、吊钩限位高度等距离指标的检测。起升速度的测量结果输入人机交互模块7。The lifting speed measurement module 5 adopts the CSDM-1 crane speed displacement measuring instrument, which is used to sense the lifting and lowering speed of the electric hoist, and also has the function of distance measurement, which can complete the lifting height, hook limit height and other distances Indicator detection. The measurement result of the lifting speed is input into the human-computer interaction module 7 .
通讯模块6，用于微处理器模块4与人机交互模块7之间的数据交换和控制。The communication module 6 is used for data exchange and control between the microprocessor module 4 and the human-computer interaction module 7 .
人机交互模块7，用于参数输入、测试控制、数据处理、数据显示和系统设置。The human-computer interaction module 7 is used for parameter input, test control, data processing, data display and system setting.
上述各部件均为市售商品。All above-mentioned components are commercially available products.
图2、图3为本装置集成在机箱内后的测试接线图。其中，三相三线制的电动葫能效测试接线如图2所示，三相四线制的电动葫芦能效测试接线如图3所示。Figure 2 and Figure 3 are the test wiring diagrams after the device is integrated in the chassis. Among them, the three-phase three-wire electric hoist energy efficiency test wiring is shown in Figure 2, and the three-phase four-wire electric hoist energy efficiency test wiring is shown in Figure 3.
a.测量电压信号输入，A、B、C三相电压直接接入本装置。对于三相三线制，三根火线分别直接接入本装置机箱后盖的Ua、Un、Uc三个接线端；对于三相四线制，三根火线分别直接接入本装置机箱后盖的Ua、Ub、Uc三个接线端，中性线接Un接线端。a. Measurement voltage signal input, A, B, C three-phase voltage directly connected to the device. For the three-phase three-wire system, the three live wires are directly connected to the three terminals Ua, Un, and Uc on the back cover of the chassis of the device; for the three-phase four-wire system, the three live wires are directly connected to Ua and Ub on the back cover of the device chassis. , Uc three terminals, the neutral line is connected to the Un terminal.
b.测量电流信号输入，A、B、C三相电流通过各自的电流互感器接入本装置。接线时每根相线均从电流互感器的P1端穿入，P2端穿出。对于三相三线制，将两个电流互感器的S1端分别接入本装置机箱后盖的Ia*和Ic*接线端，S2端分别接入本装置机箱后盖的Ia和Ic接线端，同时S2端接地；对于三相四线制，将三个电流互感器的S1端分别接入本装置机箱后盖的Ia*、Ib*和Ic*接线端，S2端分别接入本装置机箱后盖的Ia、Ib和Ic接线端，同时S2端接地。电流互感器的工作原理如图4所示。b. Measure the current signal input, A, B, C three-phase current is connected to the device through their respective current transformers. When wiring, each phase wire passes through the P1 end of the current transformer and passes through the P2 end. For the three-phase three-wire system, connect the S1 terminals of the two current transformers to the Ia* and Ic* terminals on the back cover of the device case respectively, and connect the S2 terminals to the Ia and Ic terminals on the back cover of the device case respectively. The S2 terminal is grounded; for the three-phase four-wire system, connect the S1 terminals of the three current transformers to the Ia*, Ib* and Ic* terminals of the back cover of the device case respectively, and respectively connect the S2 ends to the back cover of the device case The Ia, Ib and Ic terminals of the terminal, while the S2 terminal is grounded. The working principle of the current transformer is shown in Figure 4.
c.电源输入，220V交流电接入本装置机箱前面板的L和N接线端。c. Power input, 220V AC is connected to the L and N terminals on the front panel of the device chassis.
d.输出至上位计算机，PC机连接本装置机箱前面板485通讯接口的A+和B-接线端。d. Output to the upper computer, and the PC is connected to the A+ and B- terminals of the 485 communication interface on the front panel of the device case.
本装置的使用说明如下：The instructions for using this device are as follows:
1、电动葫芦能效测试条件1. Electric hoist energy efficiency test conditions
1.1、测试项目和数据1.1. Test items and data
1)起升高度。1) Lifting height.
2)稳态和瞬态三相电压、三相电流、有功功率、无功功率、功率因数、频率和四象限电能。2) Steady-state and transient three-phase voltage, three-phase current, active power, reactive power, power factor, frequency and four-quadrant electric energy.
1.2、测试所用仪器1.2. Instruments used for testing
测试所用仪器包括：互感器、智能电表、起重机速度位移测量仪、标准砝码、万用表及常用电工工具等The instruments used in the test include: transformers, smart meters, crane speed displacement measuring instruments, standard weights, multimeters and common electrical tools, etc.
1.3、测试条件与准备工作1.3. Test conditions and preparations
电参数采集时，电量测量同时对电压、电流、功率同时进行。When collecting electrical parameters, the power measurement is performed simultaneously on voltage, current, and power.
互感器或电能表的接入位置应为电动葫芦的电气控制箱输入端。The connection position of the transformer or watt-hour meter should be the input end of the electric control box of the electric hoist.
输入电压、输入电流、输入功率应采用数字式采样记录，采样频率不应低于10次/ms。Input voltage, input current, and input power shall be recorded by digital sampling, and the sampling frequency shall not be lower than 10 times/ms.
试验过程中，试验砝码应保持平稳，不应有抖动、摇摆现象。During the test, the test weight should be kept stable and there should be no shaking or swinging.
试验载荷的允许偏差为±1％。The allowable deviation of the test load is ±1%.
测试时供电系统在起重机馈电线接入出的电压波动不应超过±10％；三相电压不平衡率不大于1.5％。During the test, the voltage fluctuation of the power supply system connected to the feeder of the crane should not exceed ±10%; the three-phase voltage unbalance rate should not exceed 1.5%.
2、电动葫能效测试流程2. Electric hoist energy efficiency test process
2.1、基本参数获取2.1. Basic parameter acquisition
测试并记录电动葫芦起升高度、起升运行速度。记录电动葫芦出厂编号、设备名称、使用单位、工作级别、额定起重量、电机型号(工作制、接电持续率、额定功率、额定电压、额定电流)。Test and record the lifting height and lifting speed of the electric hoist. Record the factory number of the electric hoist, equipment name, unit of use, work level, rated lifting capacity, and motor model (duty system, power connection duration, rated power, rated voltage, and rated current).
2.2、准备测试载荷2.2. Prepare test load
加载标准砝码，加载额定起重量的砝码。本实用新型测试时如果砝码重量不能满足额定起重量，不小于80％额定起重量也能得出正确结果。Load standard weights and load rated weights. When the utility model is tested, if the weight of the weight cannot meet the rated lifting capacity, the correct result can also be obtained if it is not less than 80% of the rated lifting capacity.
2.3、测试仪器接线及参数设置2.3. Test instrument wiring and parameter setting
在测试前，如图2和图3所示。三相电压直接接入测试装置智能电表。对于三相三线制，三根火线分别直接接入测试装置机箱后盖Ua、Un、Uc三接线端；对于三相四线制，三根火线分别直接接入测试装置机箱后盖Ua、Ub、Uc三接线端，中性线接Un端。三相电流通过各自的电流互感器接入测试装置电表。接线时每根相线均从电流互感器的P1端穿入，P2端穿出。对于三相三线制，将两个电流互感器的S1端分别接测试装置机箱后盖的Ia*和Ic*接线端，S2端分别接测试装置机箱的Ia和Ic接线端，同时S2端需接地；对于三相四线制，将三个电流互感器的S1端分别接机箱后盖的Ia*、Ib*和Ic*接线端，S2端分别接电表的Ia、Ib和Ic接线端，同时S2端需接地。通过测试装置机箱前面板的485通讯接口与上位计算机连接；测试装置接220V交流电。Before the test, as shown in Figure 2 and Figure 3. The three-phase voltage is directly connected to the test device smart meter. For the three-phase three-wire system, the three live wires are directly connected to the three terminals Ua, Un, and Uc on the back cover of the test device case; terminal, the neutral wire is connected to the Un terminal. The three-phase current is connected to the ammeter of the test device through respective current transformers. When wiring, each phase wire passes through the P1 end of the current transformer and passes through the P2 end. For the three-phase three-wire system, connect the S1 terminals of the two current transformers to the Ia* and Ic* terminals on the back cover of the test device chassis, respectively, and connect the S2 terminals to the Ia and Ic terminals of the test device chassis, and the S2 terminal should be grounded ; For the three-phase four-wire system, connect the S1 terminals of the three current transformers to the Ia*, Ib* and Ic* terminals on the back cover of the chassis respectively, and connect the S2 terminals to the Ia, Ib and Ic terminals of the ammeter respectively, and at the same time S2 terminal needs to be grounded. Connect with the upper computer through the 485 communication interface on the front panel of the test device chassis; the test device is connected to 220V AC.
设置智能电表测试参数，电压、电流，视在功率(VA)、功率因素有功功率等参数。Set smart meter test parameters, voltage, current, apparent power (VA), power factor Parameters such as active power.
设置CSDM-1起重机速度位移测量仪初始位移，测速度、侧位移模式。Set the CSDM-1 crane speed and displacement measuring instrument for initial displacement, speed measurement and lateral displacement mode.
2.4、运行测试2.4, run the test
根据不同的电动葫芦起升机构工作级别和速度模式，按照GB/T30028-2013《电动葫芦能效测试方法》附录A规定的工作周期和运行方式运行。重复10次。According to different working levels and speed modes of the electric hoist lifting mechanism, it operates according to the working cycle and operation mode specified in Appendix A of GB/T30028-2013 "Electric Hoist Energy Efficiency Test Method". Repeat 10 times.
2.5、采集记录数据2.5. Collect and record data
测量电动葫芦在规定的工作周期内完成起升及下降动作能量的消耗、运行速度和运行距离。Measure the energy consumption, running speed and running distance of the electric hoist to complete the lifting and lowering actions within the specified working cycle.
根据电动葫芦的起重载荷和起升行程测得电动葫芦在规定的工作周期内完成起升及下降动作所产生的势能的变化。According to the lifting load and lifting stroke of the electric hoist, the change of the potential energy generated by the electric hoist completing the lifting and lowering actions within the specified working cycle is measured.
测试载荷为额定起重量，试验载荷偏差不大于1％；测试行程按电动葫芦的额定起升行程。对于载荷和起升行程受限的情况下，测试载荷可最小以降至额定载荷的80％，起升测试行程最小也可以降至额定起升行程的25％，这样测试结果不受影响。The test load is the rated lifting capacity, and the deviation of the test load is not more than 1%; the test stroke is the rated lifting stroke of the electric hoist. When the load and lifting stroke are limited, the test load can be reduced to 80% of the rated load, and the lifting test stroke can be reduced to 25% of the rated lifting stroke, so that the test results will not be affected.
2.6、测得能效值2.6. Measured energy efficiency value
根据规定工作周期内能量的消耗和势能变化测得电动葫芦的能效值。The energy efficiency value of the electric hoist is measured according to the energy consumption and potential energy change in the specified working cycle.
2.7、查表确定能效等级2.7. Check the table to determine the energy efficiency level
根据电动葫芦的工作级别和能效值，查表对电动葫芦进行能效等级划分和评价。According to the working level and energy efficiency value of the electric hoist, look up the table to classify and evaluate the energy efficiency of the electric hoist.
以上所述的仅是本实用新型的优选实施方式，本实用新型不限于以上实施例。可以理解，本领域技术人员在不脱离本实用新型的精神和构思的前提下直接导出或联想到的其他改进和变化，均应认为包含在本实用新型的保护范围之内。The above are only preferred implementations of the utility model, and the utility model is not limited to the above examples. It can be understood that other improvements and changes directly derived or conceived by those skilled in the art without departing from the spirit and concept of the present utility model shall be considered to be included in the protection scope of the present utility model.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103964312A (en) * | 2014-05-21 | 2014-08-06 | 江苏省特种设备安全监督检验研究院无锡分院 | Energy efficiency testing device and method for electric hoist |
| CN107628538A (en) * | 2017-11-07 | 2018-01-26 | 江苏省特种设备安全监督检验研究院 | Electric block control system and method based on isolation control |
| CN107702752A (en) * | 2017-11-07 | 2018-02-16 | 江苏省特种设备安全监督检验研究院 | Electric block efficiency remote gathering system and method |
| CN107727972A (en) * | 2017-11-07 | 2018-02-23 | 江苏省特种设备安全监督检验研究院 | Electric block efficiency Auto-Test System and method |
-
2014
- 2014-05-21 CN CN201420263236.XU patent/CN203976235U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103964312A (en) * | 2014-05-21 | 2014-08-06 | 江苏省特种设备安全监督检验研究院无锡分院 | Energy efficiency testing device and method for electric hoist |
| CN107628538A (en) * | 2017-11-07 | 2018-01-26 | 江苏省特种设备安全监督检验研究院 | Electric block control system and method based on isolation control |
| CN107702752A (en) * | 2017-11-07 | 2018-02-16 | 江苏省特种设备安全监督检验研究院 | Electric block efficiency remote gathering system and method |
| CN107727972A (en) * | 2017-11-07 | 2018-02-23 | 江苏省特种设备安全监督检验研究院 | Electric block efficiency Auto-Test System and method |
| CN107702752B (en) * | 2017-11-07 | 2020-03-27 | 江苏省特种设备安全监督检验研究院 | Remote energy efficiency acquisition system and method for electric hoist |
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