WO2007085162A1 - Vérin électrique multifonctions - Google Patents

Vérin électrique multifonctions Download PDF

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Publication number
WO2007085162A1
WO2007085162A1 PCT/CN2006/002995 CN2006002995W WO2007085162A1 WO 2007085162 A1 WO2007085162 A1 WO 2007085162A1 CN 2006002995 W CN2006002995 W CN 2006002995W WO 2007085162 A1 WO2007085162 A1 WO 2007085162A1
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WO
WIPO (PCT)
Prior art keywords
relay
comparator
circuit
motor
electric
Prior art date
Application number
PCT/CN2006/002995
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English (en)
French (fr)
Inventor
Yizhe Chen
Original Assignee
Yizhe Chen
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Publication date
Application filed by Yizhe Chen filed Critical Yizhe Chen
Publication of WO2007085162A1 publication Critical patent/WO2007085162A1/zh

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F3/00—Devices, e.g. jacks, adapted for uninterrupted lifting of loads
    • B66F3/44—Devices, e.g. jacks, adapted for uninterrupted lifting of loads with self-contained electric driving motors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F3/00—Devices, e.g. jacks, adapted for uninterrupted lifting of loads
    • B66F3/08—Devices, e.g. jacks, adapted for uninterrupted lifting of loads screw operated
    • B66F3/16—Devices, e.g. jacks, adapted for uninterrupted lifting of loads screw operated actuated through bevel-wheel gearings

Definitions

  • the present invention relates to an electric jack that can be used for disassembly and assembly of a small vehicle wheel hub.
  • an electric jack that realizes an electric wrench function by using a reduction device of an electric jack, and particularly relates to a control electric Control circuit for jacks and electric wrenches.
  • Chinese Patent No. CN2537695 discloses an "electric jack for the disassembly and assembly of a car wheel hub", which is composed of a manual manual screw jack, a variable speed connecting device and an electric wrench, and the power output end of the shifting connection device and the screw jack.
  • the power input ends are coupled, and the power input end of the device is coupled with the power output sleeve of the electric wrench.
  • the invention enables the conventional manual screw jack to realize the controllable electric operation screw jack by the power of the electric wrench, thereby realizing the electric operation of the car body lifting process during the disassembly and assembly process of the vehicle wheel hub, thereby greatly reducing the labor of the wheel hub disassembly process. Strength and workload.
  • Chinese Patent No. CN2145783 also discloses an electric jack composed of an electric motor, a gear set, a base gear, a ball, a base, a support screw set, a top plate sleeve and the like.
  • the former has disclosed the electric wrench function of the electric jack, and the latter has disclosed a specific structure of the screw jack that can be used.
  • the electric jack has no limit circuit when the jack is lifted and lowered, and only when it is at the top or the end or disconnected. In the motor circuit, the motor stops rotating, which is easy to cause damage to the motor. It is impossible to set the size of its ejection function. Therefore, it is necessary to make further improvements on this basis to make the function more perfect and the structure more reasonable.
  • Another object of the present invention is to provide an electric jack that can be adjusted in its use state in accordance with the load of the motor.
  • the utility model provides a multifunctional electric jack, which comprises a screw jack, a reducer and an electric motor or an electric wrench.
  • the electric motor is connected with the shaft of the reducer, and the power transmission and output end of the reducer is coupled with the power input end of the screw jack or
  • the power output end of the reducer is coupled with the sleeve of the electric wrench, and the control switch circuit of the motor that realizes the function of the jack or the electric wrench is composed of a first relay trigger circuit, a second relay trigger circuit, and a motor limit signal feedback circuit.
  • the first relay trigger circuit and the second relay trigger circuit are configured: the DC voltage input by the power source is stabilized and divided, and then respectively connected to the first relay trigger circuit comparator, and the second relay triggers the 4-way comparator In the opposite end, the input terminal of the triggering key ⁇ is connected to the power source, the output end of the triggering key K1 is connected to the non-inverting terminal of the first relay triggering circuit comparator, the input terminal of the triggering key K3 is connected to the power source, and the output terminal of the triggering key K3 is connected to the second terminal.
  • the relay touches the non-inverting terminal of the circuit comparator, the set switch of the first relay and the second relay, the input terminal of the reset key K2 is connected to the power supply, and the output terminal of the reset key ⁇ is connected to the first relay.
  • the trigger circuit comparator The second relay triggers the opposite end of the comparator, after the first relay trigger circuit comparator recognizes the electrical signal and after amplification, outputs a voltage signal to the first relay; after the second relay trigger circuit comparator recognizes the amplification, Outputting a voltage signal to the second relay; respectively controlling the operation of the first relay and the second relay, triggering of the first relay and the second relay Pole is connected to both ends of the electric motor; providing a forward or reverse voltage to the drive motor forward or reverse.
  • the motor limit signal feedback circuit is composed: after the DC voltage input by the power source is stepped down, the access signal is fed back to the same end of the comparator, and the electric signal when the motor is running is also input to the trigger electrode of the first relay and the second relay.
  • the non-inverting terminal of the signal feedback comparator, the output end of the signal feedback comparator is connected with the first relay trigger circuit and the reverse input end of the second relay trigger circuit; the working state of the signal feedback comparator can be reversed by adjusting the signal feedback comparator
  • the terminal potential is realized, thereby indirectly setting the value of the current when the motor is loaded, corresponding to the torque of the motor.
  • the signal feedback comparator consists of a two-stage comparator.
  • the circuit board of the control switch circuit is disposed in the control switch box, and the trigger keys ⁇ 1, ⁇ and the reset key ⁇ 2 are disposed on the control switch case.
  • control switch box is provided with an illumination lamp slot, and the illumination lamp cover is connected outside the slot, and the illumination lamp power source is provided by the motor power source.
  • FIG. 1 is a circuit diagram of a control switch of the present invention
  • Figure 2 is a schematic view of the structure of the present invention.
  • FIG. 3 is a schematic structural view of a control switch box of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to FIGS. 1 to 3.
  • FIG. 3 is a schematic structural view of a control switch box of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to FIGS. 1 to 3.
  • the switch-control device is an integrated circuit core LM3 2 4 four operational amplifiers IC1, IC2, IC3, IC4, which are used as an amplifier, a voltage comparator and Schmitt trigger. Since the input impedance of the operational amplifier is high, the passing current of the switch is very small, and the control circuit can be operated by the light touch key Kl, the light touch key ⁇ , the light touch key ⁇ 3, and the power supply can be controlled by the 7805 voltage regulator to provide control switch circuit operation. Power Supply.
  • the circuit shown in Figure 1 turn on the power, and divide by R1 and R2 (about 1 volt) to provide high level for the first relay trigger circuit comparator IC1 and the second relay trigger circuit comparator IC2.
  • the first relay trigger circuit comparator IC1 and the second relay trigger circuit comparator IC2 are all in an off state, and the corresponding first end relay J1 and the second relay J2'' are not energized, and both ends of the motor M are passed.
  • the normally closed contact of the first relay J1; the normally closed contact 2 of the FK1. and the second relay J2 is grounded, and the motor M is in a standby state. At this time, the first relay J1 and the second relay J2 are in a reset state.
  • the first relay trigger circuit comparator IC1 When the key K1 is turned on, the first relay trigger circuit comparator IC1 obtains a high level at the same phase, and the voltage drop of the diode formed by the series connection of the diodes D1 and D2 is about 1.4 volts, the first relay trigger circuit comparator IC1 is turned on, output high level, triggering the first relay J1 to work; similarly, the key ⁇ 3 is turned on, the second relay trigger circuit comparator IC2 obtains a high potential at the non-inverting terminal, and is higher than the inverting terminal of the IC2 by the diodes D1 and D2 in series.
  • the voltage drop of the tube is about 1.4 volts, the second relay trigger circuit comparator IC1 is turned on, the output level is high, and the second relay J2 is triggered to work; the electric key ⁇ or the electric key ⁇ 3 is disconnected, because of the partial pressure of R3, R4 Feedback, the first relay trigger circuit comparator IC1 or the second relay trigger circuit comparator IC2 non-inverting terminal potential is still higher than the inverting terminal, the first relay trigger circuit comparator IC1 or the second relay trigger circuit comparator IC2 is turned on, Their outputs are maintained at a high level; at this time, the first relay J1 or the second relay J2 is turned on, and the motor M is electrically forward or reversed.
  • the process of turning the motor M forward or reverse is as follows:
  • the key K1 or the key K3 is selectively turned on, for the sake of easy understanding, for example, when the key K1 is turned on, the first relay J1 is operated, and at this time, the first relay trigger circuit is compared.
  • the two diodes D1 and D2 of the IC1 are turned on, so that the potential of the inverting terminal of the second relay trigger circuit comparator IC2 is higher than the in-phase terminal potential formed by the voltage division of R3 and R4, so the second relay trigger circuit comparator IC2 In the off state; the second relay: F2 reset; similarly, when the key K3 is turned on, the second relay J2 operates, and the first relay J1 is reset; thereby realizing the forward or reverse rotation of the motor M, thereby achieving the rise of the jack or Drop, and the screwing and tightening work of the electric wrench close to the screw.
  • the signal feedback comparator consists of a non-inverting operational amplifier IC3 and IC4 connected in series.
  • the DC input from the power supply is stepped down by the sampling resistor R5 and then connected to the first stage signal.
  • the feedback amplifier IC3 is in the same direction, the motor is positive.
  • the electrical signal when turning or reversing is also the first
  • the trigger electrode JK1 or JK2 of the electric appliance J1 or the second relay J2 is input to the non-inverting terminal of the signal feedback amplifier, so that the voltage on the sampling resistor R5 fluctuates and is amplified in phase by IC3, and the output of the second-stage signal feedback comparator IC4
  • the terminal is connected to the inverting input terminal of the first relay triggering circuit IC1 and the second relay triggering circuit IC2; to increase the reset voltage; when the current of the motor M does not exceed the set value, the voltage amplified by the IC3 is lower than Potentiometer RW set value, so IC4 is off, the signal feedback comparator does not work;
  • IC3 Turned on, IC4 is turned on, IC4 outputs a high level so that the first relay trigger circuit comparator IC1' and
  • the working state of the signal feedback comparator as described above can be realized by adjusting the signal feedback comparator potential at the opposite end, that is, by adjusting the resistance of the RW, adjusting the sensitivity of the operation of the motor M limit signal feedback circuit, thereby indirectly setting the motor load.
  • the value of the induced current corresponds to the torque of the motor, and achieves the purpose of controlling the output torque of the jack and the output torque of the electric wrench.
  • the circuit board of the control switch circuit is disposed in the control switch box, and the electric key K1, the electric key ⁇ 3 and the reset electric key ⁇ 2 are disposed on the control 'switch box.
  • the multi-function electric jack control box as described above is provided with an illumination lamp slot, and an illumination lamp cover 6 is connected outside the slot, and the illumination lamp power source can be provided by the motor power source.
  • the switch K1 in the control switch circuit is turned on, the motor ⁇ starts, decelerates through the reducer 2, and then passes through the power output end 3 of the reducer 2 and the power input end 4 of the screw jack 1.
  • the bevel gear is coupled with the bevel gear to drive the screw in the cavity of the reducer 2 to rotate, and then the rotation of the two screw sleeves, that is, the double apex rod, is driven to generate a rising displacement.
  • the above-mentioned multifunctional electric jack is composed of a screw jack 1, a reducer 2 and a motor cymbal, the motor ⁇ is connected with the reducer 2 shaft, the power output end 3 of the reducer 2 and the screw jack 1 are powered.
  • the end 4 is connected by a bevel gear, and the motor ⁇ is electrically connected to the control switch box 5, and the multi-function jack is operated by controlling the electric key K1, the electric key ⁇ and the electric key ⁇ 3 provided on the switch box 5, and the power supply for the electric motor is taken from the vehicle power supply. , such as car battery, igniter power supply, etc.
  • the invention is used as an electric wrench, the working process is as follows:
  • the multi-functional electric jack as described above, the stator and the rotor of the electric motor M are made of neodymium iron boron material to increase the magnetic flux thereof, and the output power of the electric motor M is increased without increasing the shape of the electric motor M. Thereby increasing the torque of the jack and the torque of the electric wrench. .

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)

Description

多功能电动千斤顶 技术领域' 本发明涉及一种可用于小型车辆轮毂拆装的电动千斤顶， .尤其是 .一种利用电动千斤顶的減速装置实现电动扳手功能的电动千斤顶，特 别是涉及一种控制电动千斤顶和电动扳手工作的控制电路。 背景技术 中国专利 CN2537695公开了一种 "用于小轿车轮毂拆装的电动千 斤顶"， 它由传'统手动螺杆千斤顶、 变速连接装置和电动扳手等组成， 变速连接装置的动力输出端与螺杆千斤顶的动力输入端相配合连接， 该装置的动力输入端与电动扳手的动力输出套筒相配合连接。该发明 使得传统手动螺杆千斤顶借助电动扳手的动力，实现可控制地电动操 作螺杆千斤顶，从而使车辆轮毂拆装过程中的车体升举过程实现了电 动操作， 大大减轻了轮毂拆装过程的劳动强度和工作量。 此外， 中国 专利 CN2145783还公开了一种电动千斤顶， 由电动机、 齿轮组、 底座 齿轮、 滚珠、 底座、 支撑螺杆组、 顶盘套筒等组成。 前者已公开了电 动千斤顶的电动扳手功能，后者已公开了可采用的螺杆千斤顶的一种 具体结构， 上述电动千斤顶由于没有设置千斤顶升降时的限位电路， 只有在到顶或到底时或者断开电动机电路， 电动机才停止转动， 易造 成电动机损坏，.且无法设置它的顶出功的大小， 因而有必要在此基础 上作进一步的改进， 使之功能更趋完善， 结构更趋合理。 发明内容 本发明的目的是提供一种可用于小型车辆轮毂拆装因而具有电 动扳手功能的电动千斤顶。
本发明的另一目的是提供一种可根据电动机载荷调节其使用状 态的电动千斤顶。
本发明的技术方案是这样实现的:
提供一种多功能电动千斤顶， 其组成中包括有螺杆千斤顶、 减速 机和电动机或电动扳手， 电动机与减速机轴连接， 减速机的动力输.出 端与螺杆千斤^的动力输入端配合连接或者减速机的动力输出端与 电动扳手的套筒配合连接 ,·实现千斤顶或电动扳手功能的电动机的控 制开关电路由第一继电器触发电路、 第二继电器触发电路、 电动机限 位信号反馈电路连接构成。 所述第一继电器触发电路、 第二继电器触发电路的构成: 由电源 输入的直流电压经稳压并分压后，分别接入第一继电器触发电路比较 器、'第二继电器触发 4路比较器的反向端， 触发电键 π的输入端接 电源，触发电键 K1的输出端接第一继电器触发电路比较器的同相端、 触发电键 K3的输入端接电源，触发电键 K3的输出端接第二继电器触. 发电路比较器的同相端、 作为第一继电器和第二继电器的置位开关， 复位电键 K2的输入端接电源，复位电键 Π的输出端接第一继电.器触 发电路比较器、 第二继电器触发电路比较器的反向端， 经第一继电器 触发电路比较器识别电信号并经放大后， 输出电压信号到第一继电 器； 经第二继电器触发电路比较器识别放大后.， 输出电压信号到第二 继电器； 分别控制第一继电器和第二继电器工作， 第一继电器和第二 继电器的触发电极与电动机两端连接；提供正向或反向的电压而驱动 电动机正转或反转。
电动机限位信号反馈电路构成： 由电源输入的直流电压经降压 后， 接入信号反馈比较器的同向端， 电动机运转时的电信号也经第一 继电器、 第二继电器的触发电极输入到信号反馈比较器的同相端， 信 号反馈比较器的输出端与第一继电器触发电路和第二继电器触发电 路的反向输入端连接；信号反馈比较器的工作状态可通过调节信号反 馈比较器反向端电位实现， 从而间接设定电动机负载时电流的值， 与 电动机的转矩相对应。
如上所述的多功能电动千斤顶，所述信号反馈比较器由两级比较 器组成。
如上所述的多功能电动千斤顶，所述控制开关电路的线路板设置 在控制开关盒内， 触发电键 Κ1、 Π和复位电键 Κ2设置在控制开关盒 体上。
如上所述的多功能电动千斤顶，所述控制开关盒体内设置有照明 灯槽， 槽外连接有照明灯罩， 照明灯电源由电机电源提供。
经以上设置的多功能电动千斤顶，具有千斤顶和电动扳手的双重 功能，尤其是其控制开关电路的设置可满足千斤顶在千斤顶限程内的 任意工位位置停下的要求或者达到额定载荷后自动停下的要求或到 达千斤顶限位位置自动停下的要求，因而能适应电动千斤顶的各种使 用状态。 附图说明 图 1是本发明的控制开关电路图；
图 2是本发明的结构示意图； ·
图 3是本发明的控制开关盒的结构示意图。 具体实施方式 下面结合附图 1至附.图 3说明本发明的实施例：'
参见图 1，·控制开关电路的核心器件采用集成 LM324四个运算放 大器 IC1、 IC2、 IC3、 IC4 , 它们分别用作放大器、 电压比较器和施 密特触发器。' 由于运算放大器的输入阻抗高， 开关的通过电流很小， 可以采用轻触电键 Kl、 轻触电键 Π、 轻触电键 Κ3控制电路工作， 电 源可采用 7805稳压器处理后提供控制开关电路工作稳压电源。
釆用图 1所示电路， 接通电源， 经 Rl、 R2分压（1伏特左右）， 为第一继电器触发电路比较器 IC1、 第二继电器触发电路比较器 IC2 反相端提供高电平， 第一继电器触发电路比较器 IC1、 第二继电器触 发电路比较器 IC2均处于截止状态， 其对应输出端第一继电器 J1和 第二继电器 J2' '都不通电，电.动机 M的两端都通过第一继电器 J1的常 闭触点； FK1.和第二继电器 J2的常闭触点 2接地， 电动机 M处于待 机状态， 此时， 第一继电器 J1和第二继电器 J2处于复位状态。
接通电键 Kl， 第一继电器触发电路比较器 IC1 同相端获得高电 平，高于 IC1反相端由二极管 D1和 D2串联构成的管压降约 1. 4伏特， 第一继电器触发电路比较器 IC1导通， 输出高电平， 触发第一继电器 J1工作； 同理， 接通电键 Κ3, 第二继电器触发电路比较器 IC2同相 端获得高电位，高于 IC2反相端由二极管 D1和 D2串联构成的管压降 约 1. 4伏特， 第二继电器触发电路比较器 IC1导通， 输出高电平， 触 发第二继电器 J2工作； 断开电键 Π或.电键 Κ3 , 因有 R3、 R4分压的 反馈，第一继电器触发电路比较器 IC1或第二继电器触发电路比较器 IC2同相端电位仍高于反相端， 第一继电器触发电路比较器 IC1或第 二继电器触发电路比较器 IC2导通，它们的输出端维持高电平；这时， 第一继电器 J1或第二继电器 J2接通， 电动机 M得电正转或反转。
电动机 M得电正转或反转的过程如下： 选择性接通电键 K1或电 键 K3时， 为便于理解， 例如接通电键 K1时， 第一继电器 J1工作， 此时， 第一继电器触发电路比较器 IC1的两只二极管 Dl、 D2导通， 使第二继电器触发电路比较器 IC2的反相端电位高于它的 R3、 R4分 压形成的同相端电位，所以第二继电器触发电路比较器 IC2处于截止 状态； 第二继电器： F2复位； 同理， 接通电键 K3时， 第二继电器 J2 工作， 第一继电器 J1复位； 从而实 ί¾电动机 M的正转或反转， 进而 实现千斤顶的上升或下降， 及电动扳手紧 ϋ螺姆时的旋出和旋紧功 fl匕。
参见图 1 , 信号反馈比较器由同相运算放大器 IC3和 IC4串联构 成， 由电源输入的直流电.压经取样电阻 R5降压后， 接入第一级信号. 反馈放大器 IC3的同向端，电动机正转或反转时的电信号也经第一继 电器 Jl或第二继电器 J2的触发电极 JK1或 JK2输入到信号反馈放大 器的同相端， 因而使得取样电阻 R5上的电压呈波动状态， 并经 IC3 同相放大，第二级信号反馈比较器 IC4的输出端与第一继电器触发电 路 IC1和第二继电器触发电路 IC2的反向输入端连接；用以提高复位 电压； 当电动机 M工作时的电流未超过设定值时， 经 IC3放大后的电 压低于电位器 RW设定值， 因而 IC4截止， 信号反馈比较器不工作； 当电动机 M工作时的电流超过设定值时， 即 R5上的电压经过放大后 大于电位器' 设定的值时， IC3导通， 因而 IC4导通， IC4输出高电 平使得第一继电器触发电路比较器 IC1 '和第二继电器触发电路比较 器 IC2均截止， 第一继电器 J1.和第二继电器： Γ2均断电而复位。
如上所述的信号反馈比较器的工作状态可通过调节信号反馈比 较器反向端电位实现， 即通过调整 RW的阻值， 调节电动机 M限位信 号反馈电路工作的灵敏度， 从而间接设定电动机负载时感应电流的 值， 与电动机的转矩相对应， 达到控制千斤顶输出力矩和电动扳手输 出扭矩的目的。
如上所述的多功能电动千斤顶，所述控制开关电路的线路板设置 在控制开关盒内， 电键 Kl、 电键 Κ3和复位电键 Κ2设置在控制'开关 盒体上。
如上所述的多功能电动千斤顶控制盒体内设置有照明灯槽，槽外 连接有照明灯罩 6 , 照明灯电源可由电动机电源提供。
本发明作电动千斤顶使用时， 其工作过程如下：
1、 手按 "升" 按叙， 控制开关电路中的电键 K1导通， 电动机 Μ 启动， 通过减速机 2减速， 再通过减速机 2的动力输出端 3与螺杆千 斤顶 1的动力输入端 4的伞齿轮配合连接， 再由伞齿轮带动减速机 2 腔体内的螺杆转动，'进而带动螺接其上的两螺套即双节顶杆'的转动， 从而产生上升位移。
2、 手按 "降" 按钮， 电路中电键 Κ3导通， 经控制电路， 电动机 Μ反转启动， 机械传动原理同上条， 从而产生下降位移。
3、 手按 "停" 按扭， 电路中电键 Κ2导通， 电路复位， 电动机 Μ 停转， 千斤顶的顶杆静止在设定位置。
参见图 2 , 上述的一种多功能电动千斤顶， 由螺杆千斤顶 1、 减 速机 2和电动机 Μ组成， 电动机 Μ与减速机 2轴连接， 减速机 2的动 力输出端 3与螺杆千斤顶 1的动力输入端 4通过伞齿轮配合连接,电 动机 Μ与控制开关盒 5电连接， 通过控制开关盒 5上设置的电键 Kl、 电键 Π、 电键 Κ3进而操控多功能千斤顶工作， 电动机 Μ所用电源取 自车用电源， 如车用蓄电池、 点火器电源等。 . 本发明作电动扳手使用时， 其工作过程如下：
按控制开关盒上的与升、 降、 停相对应的电键， 控制电动机 M 反转和停止， 电动机 M的动力经减速机 2 , 再经输出联接机构传至电 动扳手高低速转换箱， 通过高低速转换箱内设置的齿轮组的配合， 与 电动扳手的终端的套筒联接， 实现拧紧或者松开螺丝的功 '能。 其拆卸 和坚固螺丝时， 是通过齿轮組的传导齿轮与输出齿轮的开合， 将齿轮 组工作时的转动惯量转化为输出端的扭矩实现瞬间大力松开螺丝和 紧固螺丝的。
如上所述的多功能电动千斤顶.，其电动机 M的定子和转子采用铷 铁硼材料制作，以提高其磁通量，在不加大电动机 M的形体的基础上， 加大了电动机 M的输出功率，从而加大了千斤顶的力矩和电动扳手的 扭矩。 .

Claims

权 利 要 求
1、 一种多功能电动千斤顶， 其组成中包括有螺杆千斤顶、 减速 机和电动机或电动扳手， 电动机与减速^几轴连接， 减速 的动力输出 电动扳手的套筒配合连接， 其特征在于： 所述电动机的控制开关电路 由第一继电器触发电路、 第二继电器触发电路、 电动机限位信号反馈 电路连接构成。
2、 如权利要求 1所述的多功能电动千斤顶， 其特征在于： 所述 第一继电器触发电路、 第二继电器触发电路的构成： 由电源输入的直 流电压经稳压并分压后， 分别接入第一继电器触发电路比较器、 第二 继电器触发电路比较器的反向端， 触发电键 Π的输入端接电源， 触. 发电键 的输出端接第一继电器触发电路比较器的同相端、 触发电 键 K3的输入端接电源，触发电键 K3的输出端接第二继电器触发电路 比较器的同相端、 复位电键 K2的输入端接电源， 复位电键 K2的输出 端接第一继电器触发电路比较器、第二继电器触发电路比较器的反向 端， 经第一继电器触发电路比较器识别电信号并经放大后，输出电压 信号到第一继电器； 经第二继电器触发电路比较器识別放大后， 输出 电压信号到第二继电器； 分別控制第一继电器和第二继电器工作， 第 一继电器和第二继电器的触发电极与电动机两端连接；电动机限位信 号反馈电路构成： 由电源输入的直流电压经降压后，接入信号反馈比 较器的同向端， 电动机运转时的电信号也经第一继电器、 第二继电器 的触发电极输入到信号反馈比较器的同相端，信号反馈比较器的输出 端与第一继电器触发电路和第二继电器触发电路的反向输入端连接。
' 3、 如权利要求 2所述的多功能电动千斤顶， 其特征在于： 所述 电动机限位信号反馈电路的信号反馈比较器的工作状态可通过调节 信号反馈比较器反向端电位实现。
4、 如权利要求 3所述的多功能电动千斤顶， 其特征在于： 所述 信号反馈比较器由两级比较器连接组成。
5、 如权利要求 1所述的多功能电动千斤顶， 其特征在于： 所述 控制开关电路的线路板设置在控制开关盒内， 触发电键 Kl、 触发电 键 Κ3和复位电键 Π设置在控制开关貪体上。
6、 如权利要求 5所述的多功能电动千斤顶， 其特征在于： 所述 控制开关盒体内设置有照明灯槽， 槽外连接有照明灯罩。
PCT/CN2006/002995 2006-01-25 2006-11-09 Vérin électrique multifonctions WO2007085162A1 (fr)

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