WO2010130203A1 - 一种电动推动装置 - Google Patents

一种电动推动装置 Download PDF

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Publication number
WO2010130203A1
WO2010130203A1 PCT/CN2010/072651 CN2010072651W WO2010130203A1 WO 2010130203 A1 WO2010130203 A1 WO 2010130203A1 CN 2010072651 W CN2010072651 W CN 2010072651W WO 2010130203 A1 WO2010130203 A1 WO 2010130203A1
Authority
WO
WIPO (PCT)
Prior art keywords
motor
screw
electromagnet
shaft
brake disc
Prior art date
Application number
PCT/CN2010/072651
Other languages
English (en)
French (fr)
Inventor
谢兴云
杨国平
熊月华
Original Assignee
Xie Xingyun
Yang Guoping
Xiong Yuehua
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CN 201010003054 external-priority patent/CN101888135B/zh
Priority claimed from CN2010200026719U external-priority patent/CN201601562U/zh
Application filed by Xie Xingyun, Yang Guoping, Xiong Yuehua filed Critical Xie Xingyun
Priority to US13/318,868 priority Critical patent/US20120098368A1/en
Priority to EA201171404A priority patent/EA021159B1/ru
Priority to CN2010800193127A priority patent/CN102884717A/zh
Priority to AU2010246822A priority patent/AU2010246822B2/en
Priority to EP10774544.0A priority patent/EP2432101A4/en
Priority to JP2012510099A priority patent/JP2012526950A/ja
Publication of WO2010130203A1 publication Critical patent/WO2010130203A1/zh

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/06—Means for converting reciprocating motion into rotary motion or vice versa
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
    • F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
    • F16H25/20—Screw mechanisms
    • F16H25/24—Elements essential to such mechanisms, e.g. screws, nuts
    • F16H25/2454—Brakes; Rotational locks
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
    • H02K7/102—Structural association with clutches, brakes, gears, pulleys or mechanical starters with friction brakes
    • H02K7/1021—Magnetically influenced friction brakes
    • H02K7/1023—Magnetically influenced friction brakes using electromagnets
    • H02K7/1025—Magnetically influenced friction brakes using electromagnets using axial electromagnets with generally annular air gap
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
    • F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
    • F16H25/20—Screw mechanisms
    • F16H2025/2062—Arrangements for driving the actuator
    • F16H2025/2075—Coaxial drive motors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
    • F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
    • F16H25/20—Screw mechanisms
    • F16H2025/2062—Arrangements for driving the actuator
    • F16H2025/2081—Parallel arrangement of drive motor to screw axis

Definitions

  • the present invention relates to a device for urging a member or mechanism to move, and more particularly to an electric pushing device. Background technique
  • the patent document CN2847660Y discloses "a new type of electric push rod".
  • the electric push rod is used for a brake, and includes a motor, an upper stroke switch, a lower stroke switch and a casing.
  • the motor is connected to a lower end of the outer casing, and an upper part of the outer casing is provided with an outwardly movable push rod, and a lower part is provided with a spring seat and a motor output shaft.
  • a screw rod is connected, and the inner end of the screw rod and the spring seat form a thread pair, and the upper part of the screw rod is provided with a compression spring, and the compression spring acts on the push rod.
  • the working process is that the rotation of the motor drives the screw to rotate, and the lower part of the screw rod and the spring seat form a thread side effect, and the spring seat acts along the screw rod to act on the compression spring, and the force generated when the compression spring is compressed acts on the push rod, so that The push rod is extended outward to control the working state of the brake, and has a certain use effect.
  • the screw angle of the screw is larger than the self-locking angle, the state of the push rod moving outwards keeps the motor energized for a long time, and the energy consumption is large. Moreover, the motor will cause temperature rise and trouble due to long-term energization.
  • One of the objects of the present invention is to provide an electric pushing device.
  • the screw angle of the lead screw of the electric pushing device is greater than the self-locking angle, and the push rod is moved after being placed in position, and the motor is not required to be energized for a long time, thereby saving energy and reducing
  • the motor operates at a temperature rise and reduces malfunctions, not only for the brakes, but also for propelling other components or mechanisms to move.
  • an electric pushing device comprising: a motor, an outer casing, an axially movable push rod disposed in the outer casing, a screw rod disposed in the push rod, and a screw rod disposed on the push rod
  • the nut forming the thread pair, the screw angle of the screw rod and the nut is larger than the self-locking angle, the inner part of the screw rod has a supporting bearing, the inner end of the screw rod is connected with the shaft of the motor, and the electromagnet and the brake pair are provided, and the electromagnetic
  • the iron core has a spring member acting on the moving iron core, the brake pair includes a rotating brake disc and a movable brake disc, the rotating brake disc is connected with the shaft of the motor, and the moving of the brake disc and the electromagnet is moved.
  • the iron core is connected, and the iron core can move linearly in the axial direction.
  • the working process is that the electromagnet is energized, the electromagnetic force overcomes the spring force of the spring member, and the translational brake disc follows the iron core shaft. Moving, disengaging from the rotating brake disc, the motor is energized and rotated, and the motor drives the screw to rotate. Due to the action of the thread pair, the nut moves along the screw rod, that is, the push rod moves, and the push rod drives the push rod to be connected.
  • the component or mechanism moves, until the working condition requires the displacement state, the motor power is cut off, the motor stops running, the electromagnet is simultaneously de-energized, the spring member acts, the translational brake disc moves with the iron core, and the translation brake disc That is, engaging with the rotating brake disc, the braking force generated by the translation of the translational brake disc and the rotating brake disc prevents the motor from rotating, and the screw stops rotating, so that the state of the push rod is maintained after the motor is powered off. , that is, to satisfy the displacement state of the moving member or mechanism to maintain the working condition.
  • the electromagnet When the member or mechanism connected to the push rod needs to be reset, the electromagnet is energized, the electromagnetic suction force overcomes the spring force of the spring member, the translational brake disc moves along with the moving iron core, disengages from the rotating brake disc, and the braking force is released.
  • the reaction force of the member or mechanism connected to the push rod (for the brake, that is, the spring force of the brake spring or the return spring of the brake portion thereof), the push rod generates movement, and the nut moves along the screw rod.
  • the lead screw is reversed, and the motor is reversed in the state of no energization until the push rod moves to reset, that is, the reset condition of the member or mechanism connected to the push rod is met, and then the power supply of the electromagnet is cut off.
  • the translational brake disc engages the rotating brake disc to create a brake that maintains the reset condition of the component or mechanism that is coupled to the push rod.
  • the initial position of the nut on the push rod is located in the middle of the screw rod, and the push rod can generate a reciprocating force by the forward and reverse rotation of the motor, thereby driving the push rod to be connected.
  • the components or mechanisms produce reciprocating movements, others as described above.
  • the initial position of the nut on the push rod is located at the outer end of the screw, and the initial position of the nut on the push rod is located at the outer end of the screw.
  • the screw rod 4 and the axis of the motor 1 are not collinear, and a transmission mechanism is disposed between the outer casing and the motor, and the inner end of the screw rod and the transmission mechanism
  • the passive transmission member is connected, the output shaft end of the shaft of the motor is connected with the active transmission member in the transmission mechanism; the rotating brake disc in the brake pair is connected with the active transmission member in the transmission mechanism, and the inner end of the screw rod is further provided Supporting the bearing, the action relationship between the motor and the lead screw is realized by the transmission chain of the transmission mechanism, and the others are the same as described above.
  • the member or mechanism connected to the push rod is moved by the push rod, and the motor power can be cut off after reaching the required displacement state of the working condition.
  • the braking force generated by the translational brake disc of the electromagnet that is, the engagement with the rotating brake disc, prevents the motor from rotating, so that when the motor is de-energized, the state of the push rod is maintained, that is, the member to be moved or
  • the mechanism maintains the working condition and requires the displacement state, which has the effect of saving energy, and can reduce the temperature rise of the motor and reduce the fault.
  • the translational brake disc is engaged with the rotating brake disc, resulting in a system.
  • the resetting condition of the member or mechanism connected to the push rod can be maintained.
  • the push rod can generate a reciprocating force, and the member or mechanism connected to the push rod can be driven. Reciprocating movement, and also using the power-off state of the electromagnet, so that the member or mechanism connected to the push rod is kept in a state of reciprocating movement, in addition to saving energy, reducing the temperature rise of the motor, reducing the malfunction, and the like, And with the working characteristics of the two-way cylinder, it has a more versatile effect.
  • the initial position of the nut on the push rod of the present invention can be located at the outer end of the screw rod, the initial position of the nut on the push rod is located at the outer end portion of the screw rod, and when the motor is energized and rotated, the push rod along the nut along the wire The rod is inwardly retracted, and the push rod is equivalent to inwardly retracting, that is, pulling the member or mechanism connected with the push rod.
  • the structure of the present invention has Easy to install features.
  • the brake of the brake pair is released by turning on the power of the electromagnet, so that the member or mechanism connected to the push rod is in a state of being in a state of being easily inspected and maintained.
  • FIG. 1 is a structural view of a technical solution of the present invention, which is a structural view of the first embodiment, and is determined as a drawing;
  • FIG. 2 is a structural view of the second embodiment, showing a deformation structure of the brake pair 7 ;
  • Figure 3 is a view showing the structure of Embodiment 3;
  • Figure 4 is a structural view of Embodiment 4.
  • Figure 5 is a schematic diagram of the state of use of Embodiment 4.
  • Figure 6 is a structural view of Embodiment 5.
  • Figure 7 is a structural view of Embodiment 6;
  • Figure 8 is a structural view of Embodiment 7;
  • Figure 9 is a structural view of Embodiment 8 showing a modified structure of the solution of the present invention.
  • the cabinet 10 is a structural diagram of the embodiment 9;
  • Figure 11 is a structural view of Embodiment 10.
  • Figure 12 is a structural view of Embodiment 1 1;
  • Figure 13 is a structural view of Embodiment 12, showing another modified structure of the solution of the present invention
  • Figure 14 is a structural view of Embodiment 13, showing still another modified structure of the solution of the present invention
  • the technical solution of the present invention includes a motor 1 and a casing 2 .
  • the casing 2 is provided with an axially movable push rod 3 .
  • the push rod 3 is provided with a screw rod 4
  • the push rod 3 is provided with a screw rod 4 .
  • a nut 5 that constitutes a thread pair.
  • the lead screw 4 and the nut 5 are preferably of a ball screw and a ball nut structure, but the present invention is not limited thereto, and a thread pair of another suitable form may be employed.
  • the screw angle of the screw rod 4 and the nut 5 is larger than the self-locking angle, and the inner portion of the screw rod 4 is provided with a support bearing 8, and the support bearing 8 is connected to the outer casing 2 through the member 11, the inner end of the screw rod 4 and the motor 1 shaft connection.
  • the motor 1 is located at the inner end of the brake pair 7 and the lead screw 4, and the inner end of the screw shaft 4 is connected to the output shaft end of the shaft of the motor 1, as shown in Fig. 1, the lead screw 4 The inner end is connected to the output shaft end of the shaft of the motor 1 through a coupling 10.
  • the electromagnet 6 and the brake pair 7 are further provided, and the fixed iron core 6c of the electromagnet 6 has a spring member 6b acting on the movable iron core 6a, and the electromagnet 6 is preferably a DC electromagnet.
  • the brake pair 7 includes a rotary brake disk 7a and a movable brake disk 7b, and the rotary brake disk 7a is coupled to the shaft of the motor 1. Specifically, for example, as shown in FIG.
  • the rotating brake disc 7a is connected to the shaft end of the shaft of the motor 1, and the brake pair 7 acts on the motor 1, and the rotation of the screw 1 prevents the screw 4 from rotating, and
  • the push rod can be kept in a state of being moved
  • the translational brake disc 7b is connected to the movable iron core 6a of the electromagnet 6, and the moving iron core 6a can be linearly moved in the axial direction.
  • the movable plate 7b is not rotated; the electromagnet 6 is connected to the outer casing 2 through a member, and the end wall of the outer casing 2 is provided with a sealing ring 12 acting on the push rod 3; the outer casing 2 is composed of left and right (or upper and lower) cylinders.
  • the initial position of the nut 5 on the push rod 3 is located at the inner end of the screw shaft 4.
  • the push rod 3 moves outwardly along the screw rod 4 with the nut 5, and the push rod 3 Equivalent to pushing out, that is, pushing a member or mechanism connected to the push rod; the electromagnet 6 is in an energized state, as shown in FIG.
  • the translational brake disc 7b and the rotating brake disc 7a are in a dislocated state, the push rod 3 is a state of being reset to the inner end portion of the screw shaft 4; when the power supply of the electromagnet 6 is cut off, the translational brake disc 7b is combined with the rotary brake disc 7a to generate a braking force, and the holding push rod 3 is reset to the screw rod. 4
  • the rotating brake disk 7a and the movable brake disk 7b of the brake pair 7 are annular engagement faces. Specifically, one of the rotary brake disk 7a and the movable brake disk 7b is provided with a brake friction surface, and is engaged with each other. When braking is performed, the joint surface of the rotating brake disc 7a and the movable brake disc 7b is a flat surface.
  • This embodiment is based on the first embodiment, and the structure of the brake pair 7 is modified.
  • the rotary brake disk 7a and the movable brake disk 7b of the brake pair 7 shown in Fig. 1 are annular joint faces, in this example.
  • Rotating brake disc 7a of the brake pair and moving The brake disc 7b is a convex joint surface, which is the same as described in the first embodiment.
  • a part of the brake friction surface on the rotary brake disc 7a is provided on the translational brake disc 7b, thereby forming a convex structure.
  • This example differs from the first embodiment in that the initial position of the nut 5 on the push rod 3 is located at the outer end of the screw shaft 4.
  • the motor 1 When the motor 1 is energized and rotated, the push rod 3 is retracted along the screw rod 4 with the nut 5.
  • the push rod 3 In the moving movement, the push rod 3 is equivalent to inwardly retracting, that is, pulling the member or mechanism connected with the push rod; the electromagnet 6 is in a de-energized state, as shown in Fig.
  • the translational brake disc 7b and the rotating brake disc 7a is in a coupled state, that is, a braking force generated by the translation of the translation brake disc 7b in combination with the rotating brake disc 7a, so that the push rod 3 is held in a state of being reset to the outer end portion of the screw shaft 4.
  • Others are the same as in the first embodiment.
  • This example differs from the first embodiment in that the initial position of the nut 5 on the push rod 3 is located in the middle of the screw shaft 4, and the positive or negative rotation of the motor 1 after passing through the Fli, the push rod 3 is made along the screw rod 4 with the nut 5 Inwardly retracting or outwardly extending, as shown in Fig. 5, when the push rod 3 is equivalent to the inward retracting movement, that is, pulling the member or mechanism 13 connected to the push rod, when the push rod 3 is equivalent to When the outer extension moves, that is, the member or mechanism 13 connected to the push rod is pushed; as shown in FIG.
  • the electromagnet 6 is in a power-off state
  • the translational brake disc 7b is in a combined state with the rotary brake disc 7a, that is,
  • the braking force generated by the translational brake disc 7b in combination with the rotating brake disc 7a causes the push rod 3 to be held in the middle of the screw.
  • the support bearing 8 adopts a double-bearing structure and employs a thrust bearing to satisfy the support of the lead screw 4 under heavy load conditions, and the other is shown in the figure and the embodiment 4.
  • Fig. 7 shows a modified structure of the arrangement of the motor 1 and the electromagnet 6 in the technical solution of the present invention.
  • the outer casing 2 is provided with an axially movable push rod 3
  • the push rod 3 is provided with a screw rod 4
  • the push rod 3 is provided with a nut 5 composed of a threaded pair with the screw rod 4, the lead rod 4
  • the screw-up of the screw 5 is larger than the self-locking angle
  • the inner part of the screw rod 4 is provided with a support bearing 8, and the inner end of the screw 4 is connected with the shaft of the motor 1, and the electromagnet 6 and the brake pair 7 are provided.
  • the fixed iron core 6c of the electromagnet 6 has a spring member 6b acting on the movable iron core 6a.
  • the brake pair 7 includes a rotating brake disc 7a and a flat brake disc 7b.
  • the rotating brake disc 7a is connected to the shaft of the motor 1.
  • the translational brake disc 7b is connected to the movable iron core 6a of the electromagnet 6, and can move linearly in the axial direction of the follower iron core 6a.
  • the motor 1 is located at the outer end of the electromagnet 6 , and the electromagnet 6 is preferably a DC electromagnet; the output shaft of the motor 1 passes through the electromagnet 6 and is connected to the inner end of the screw rod 4 through the coupling 10 .
  • Rotation in brake pair 7 The brake disc 7a is connected to the output shaft of the motor 1, and the translation brake disc 7b is also connected to the movable iron core 6a.
  • Fig. 8 shows a second modification of the arrangement of the motor 1 and the electromagnet 6 in the technical solution of the present invention.
  • the motor 1 is located between the brake pair 1 and the inner end of the screw shaft 4.
  • the motor 1 of this example is located between the electromagnet 6 and the inner end of the screw shaft 4, and the motor 1
  • the shaft end of the shaft passes through the electromagnet 6, which is connected to the shaft end of the shaft of the motor 1, and the translation brake disc 7b is also connected to the moving iron core 6a.
  • FIG. 9 is a modified structure of the technical solution of the invention shown in FIG. 1.
  • the lead screw 4 is collinear with the axis of the motor 1.
  • the screw shaft 4 and the axis of the motor 1 are not collinear, for example, parallel to each other.
  • a transmission mechanism 9 is disposed between the screw shaft 4 and the motor 1, and includes a motor 1, a casing 2, an axially movable push rod 3 is disposed in the outer casing 2, and a screw rod 4 is disposed in the push rod 3, and the push rod 3 is provided.
  • the nut 5 is formed with the threaded rod 4, and the screw angle of the screw rod 4 and the nut 5 is larger than the self-locking angle.
  • the inner part of the screw rod 4 is provided with a support bearing 8, the inner end of the screw rod 4 and the transmission
  • the passive transmission member in the mechanism 9 is connected, and the driving transmission member 9a in the transmission mechanism 9 is connected to the shaft of the motor 1.
  • the driving transmission member 9a in the transmission mechanism 9 is connected to the output shaft end of the shaft of the motor 1.
  • the motor 1 and the push rod 3 are arranged in parallel axes; the electromagnet 6 and the brake pair 7 are provided; the fixed iron core 6c of the electromagnet 6 has a spring member 6b acting on the movable iron core 6a, and the brake pair 7 includes a rotation
  • the brake disc 7a and the movable brake disc 7b, the rotating brake disc 7a is connected with the active transmission member 9a in the transmission mechanism 9, and the inner end of the screw rod 4 is further provided with a support bearing 8', that is, the support bearing 8 is a double bearing structure;
  • the rotating brake disc 7a is coupled to the shaft of the motor 1, in particular, the rotary brake in this example Connected to the output shaft 7a of the motor shaft 1, the brake disc 7b translational electromagnet 6a. 6 is connected to the movable core, the movable iron core 6a axially and linearly with movement.
  • the transmission mechanism 9 may be in the form of a suitable transmission such as a chain drive, a gear transmission, or a belt drive.
  • the drive transmission member 9a may be a drive gear
  • the driven transmission member 9b may be a driven gear.
  • this example differs from the embodiment 8 in that the initial position of the nut 5 on the push rod 3 is located in the middle of the screw 4, as described in the same manner as in the eighth embodiment.
  • This example is a modified structure in which the motor 1 and the electromagnet 6 are disposed in the modification shown in Figs. 9 and 10.
  • the electromagnet 6 is located at the shaft end of the shaft of the motor 1, the shaft end of the motor 1 is connected to the rotating brake disc 7a through the electromagnet 6, and the translational brake disc 7b is also connected to the moving core of the electromagnet 6. 6a connection, shaft of motor 1 The output shaft end is also connected to the drive transmission 9a in the transmission mechanism 9.
  • Fig. 12 shows still another modified structure of the arrangement of the motor 1 and the electromagnet 6 in the modification shown in Figs.
  • the electromagnet 6 is located between the motor 1 and the driving member 9a.
  • the output shaft end of the shaft of the motor 1 is also connected to the driving member 9a through the electromagnet 6, and the shaft of the rotating disc 7a and the motor 1 is rotated.
  • the output shaft ends are connected, and the translational brake disc 7b is also connected to the movable iron core 6a of the electromagnet 6.
  • FIG. 13 is a structural view of the embodiment 12, showing another modified structure of the invention shown in Figure 1. This embodiment is based on the first embodiment, and different from the first embodiment, the screw 4
  • the brake pair 7 is not collinear with the axis of the blower 1.
  • a transmission mechanism 9 is disposed between the screw shaft 4 and the motor 1, and includes a motor 1, a casing 2, an axially movable push rod 3 disposed therein, and a screw rod 4 disposed in the push rod 3.
  • the push rod 3 is provided with a nut 5 which is composed of a threaded pair with the screw rod 4.
  • the screw angle of the screw rod 4 and the nut 5 is larger than the self-locking angle, and the inner portion of the screw rod 4 is provided with a support bearing 8, the screw rod 4
  • the inner end is connected to the passive transmission member % in the transmission mechanism 9, and the driving transmission member 9a in the transmission mechanism 9 is connected to the shaft of the motor 1, as shown, the active transmission member 9a in the transmission mechanism 9 and the shaft of the motor 1
  • the output shaft ends are connected, and the motor 1 and the push rod 3 are arranged in parallel axes; the electromagnet 6 and the brake pair 7 are provided, and the fixed iron core 6c of the electromagnet 6 has a spring member 6b acting on the movable iron core 6a, braking
  • the auxiliary shaft 7 includes a rotating brake disc 7a and a movable brake disc 7b.
  • the rotating brake disc 7a is connected with the intermediate transmission member 9c of the transmission mechanism 9.
  • the inner end of the screw rod 4 is further provided with a support bearing 8', that is, the support bearing 8 is Double bearing structure; the translational brake disc 7b is connected to the moving iron core 6a of the electromagnet 6, and can be used The moving iron core 6a moves linearly in the axial direction.
  • the transmission mechanism 9 is not limited to any one of the transmission forms, and may be, for example, a suitable transmission form such as a chain drive, a gear transmission, or a belt drive.
  • the drive transmission member 9a may be a drive gear
  • the driven transmission member % is a driven gear
  • the intermediate transmission member 9c may be an intermediate transmission gear.
  • the axes of the lead screw 4, the brake pair 7 and the motor 1 are parallel to each other, the invention is not limited thereto, for example, the axis may also adopt other non-collinear manners, such as an axis.
  • the tilting angle is inclined, and the intermediate transmission mechanism can also be used in the form of a helical gear.
  • FIG 14 is a structural view of the embodiment 13, showing a further modified structure of the invention shown in Figure 1; this embodiment is based on the embodiment 1, a transmission mechanism 9 is provided between the screw 4 and the motor 1,
  • the utility model comprises a motor 1 and a casing 2, wherein the casing 2 is provided with an axially movable push rod 3, the push rod 3 is provided with a screw rod 4, and the push rod 3 is provided with a nut 5 which is formed with a threaded pair of the screw rod 4, and the screw rod 4
  • the angle of the screw with the nut 5 is larger than the self-locking angle, and the inner portion of the screw rod 4 is provided with the support bearing 8, and the inner end of the screw rod 4 is connected with the passive transmission member 9b of the transmission mechanism 9, and the active mechanism 9
  • the transmission member 9a is connected to the shaft of the motor 1, as shown, the active transmission member in the transmission mechanism 9 9a is connected to the output shaft end of the shaft of the motor 1, and the motor 1 and the push rod 3 are arranged in parallel
  • the spring member 6b, the brake pair 7 includes a rotating brake disc 7a and a movable brake disc 7b.
  • the rotating brake disc 7a is connected with the passive transmission member 9b of the transmission mechanism 9.
  • the inner end of the screw rod 4 is further provided with a support bearing 8 ', that is, the support bearing 8 is a double bearing structure, the translational brake disc 7b is connected with the movable iron core 6a of the electromagnet 6, and can move linearly in the axial direction of the movable iron core 6a;
  • the inventive solution can also be a variety of deformed structures.
  • the initial position of the nut 5 on the push rod 3 may be located at the inner end of the lead screw 4 or at the central or outer end of the lead screw 4.

Description

一种电动推动装置 技术领域
本发明涉及一种推动构件或机构产生移动的装置， 具体是一种电动推动装置。 背景技术
2006年 12月 13日公开的 CN2847660Y号专利文献披露了"一种新型电动推杆"。 该电动推杆用于制动器， 包括电机、 上行程开关、 下行程开关和外壳， 电机与外壳的 下端连接， 外壳内上部设有可向外移动的推杆， 下部设有弹簧座， 电机输出轴连接一 丝杆， 丝杆内端与弹簧座组成螺纹副， 丝杆上段上设有压缩弹簧， 压缩弹簧作用于推 杆。 工作过程是， 电机转动带动丝杆旋转， 通过丝杆下部与弹簧座组成螺纹副作用， 弹簧座即沿丝杆移动而作用于压缩弹簧， 压缩弹簧被压缩时所产生的力作用于推杆， 使推杆向外伸出而控制制动器的工作状态， 具有一定的使用效果。 但是， 当其丝杆的 螺旋升角大于自锁角时， 推杆向外移动后的状态保持须电机长期通电， 耗能较大， 而 且， 电机因长期通电将导致温升高、 故障多的缺陷； 当其丝杆的螺旋升角小于自锁角 时， 电机需要正反转来满足推杆往复的工作要求， 同样存在耗能较大、 温升高、 故障 多的缺陷， 而且， 一旦意外停电， 在推杆伸出状态下不能自动恢复初始状态。 发明内容
本发明的目的在于克服现有技术中的上述问题和缺陷中的至少一个方面。
本发明的目的之一在于提出一种电动推动装置， 本电动推动装置的丝杆的螺旋升 角大于自锁角， 其推杆移动到位后的保持， 不需电机长期通电， 可节约能源、 降低电 机运行温升、减少故障， 不但可用于制动器， 还适用于推动其他构件或机构产生移动。
根据本发明的 -个方面， 其提供一种电动推动装置， 包括： 电机、 外壳， 外壳内 设有可轴向移动的推杆， 推杆内设有丝杆， 推杆上设有与丝杆组成螺纹副的螺母， 丝 杆与螺母配合的螺旋升角大于自锁角， 丝杆内段上有支撑轴承， 丝杆的内端与电机的 轴连接， 设有电磁铁和制动副， 电磁铁的定铁芯内有作用于动铁芯的弹簧件， 制动副 包括旋转制动盘和平动制动盘， 旋转制动盘与电机的轴连接， 平动制动盘与电磁铁的 动铁芯连接， 并可随动铁芯轴向直线移动。
工作过程是， 电磁铁通电， 电磁力克服弹簧件的弹簧力， 平动制动盘随动铁芯轴 向移动， 与旋转制动盘脱开， 电机通电旋转， 电机即带动丝杆旋转， 由于螺纹副的作 用， 螺母沿丝杆移动， 即带动推杆移动， 推杆则带动与该推杆连接的构件或机构产生 移动， 直至达到工况要求位移状态后， 切断电机电源， 电机停止运转， 电磁铁同时断 电， 弹簧件的作用， 平动制动盘随动铁芯移动， 平动制动盘即与旋转制动盘接合， 平 动制动盘与旋转制动盘接合所产生的制动力阻止电机转动， 丝杆停止旋转， 使得在电 机断电的情况下， 保持推杆产生移动后的状态， 即满足被移动的构件或机构保持工况 要求位移状态。 当与该推杆连接的构件或机构需要复位时， 电磁铁通电， 电磁吸力克 服弹簧件的弹簧力， 平动制动盘随动铁芯移动， 与旋转制动盘脱幵， 制动力解除， 与 该推杆连接的构件或机构的反作用力作用 （用于制动器时， 即由其制动部分的制动弹 簧或复位弹簧的弹簧力作用） ， 推杆产生移动， 螺母即沿丝杆移动， 丝杆随之反转， 电机即在不通电的状态下产生反转， 直至推杆移动而复位， 即满足与推杆连接的构件 或机构的复位工况要求， 然后， 切断电磁铁的电源， 平动制动盘即与旋转制动盘接合， 产生制动， 保持与该推杆连接的构件或机构的复位工况要求。
在本发明的一种变更实施方式中， 即推杆上的螺母初始位置位于丝杆的中部， 通 过电机的正反旋转， 推杆可产生往复移动的作用力， 即可带动与该推杆连接的构件或 机构产生往复移动， 其他同前述方案。 此外， 在另一种变更实施方式中， 推杆上的 螺母初始位置位于丝杆的外端部， 推杆上的螺母的初始位置位于丝杆的外端部， 电机 通电旋转工作时， 推杆随螺母沿丝杆做向内缩进移动， 推杆相当于向内缩进， 即拉动 与该推杆连接的构件或机构。
在本发明的进一步实施方式中， 在上述实施方式的基础上， 所述丝杆 4与电机 1 的轴线不共线， 在外壳与电机之间设置传动机构， 所述丝杆内端与传动机构中的被动 传动件连接， 电机的轴的输出轴端与传动机构中的主动传动件连接； 制动副中的旋转 制动盘与传动机构中的主动传动件连接， 丝杆内端还设有支撑轴承， 电机与丝杆的作 用关系通过传动机构的传动链来实现， 其他同前述。
与背景技术比， 本发明具有的技术效果是：
1、 由于设置了作用于电机的制动副， 并通过电磁铁的作用， 在推杆带动与该推 杆连接的构件或机构产生移动， 直至达到工况要求位移状态后， 可切断电机电源， 通 过电磁铁的平动制动盘即与旋转制动盘接合所产生的制动力阻止电机转动， 使得在电 机断电的情况下， 保持推杆产生移动后的状态， 即满足被移动的构件或机构保持工况 要求位移状态， 具有节约能源的效果， 并可降低电机运行温升、 减少故障等特点。 2、 在推杆复位后， 即满足与推杆连接的构件或机构的复位工况要求后， 在电磁 铁不通电的自然状态下， 平动制动盘即与旋转制动盘接合， 产生制动， 具有在电机和 电磁铁均不通电的自然状态下， 可保持与该推杆连接的构件或机构的复位工况要求。
3、 由于本发明中推杆上的螺母初始位置可位于丝杆的中部， 通过电机的正反旋 转， 推杆可产生往复移动的作用力， 即可带动与该推杆连接的构件或机构产生往复移 动， 而且， 同样利用电磁铁的断电状态， 使与推杆连接的构件或机构保持往复移动到 位后的状态， 除具有节约能耗、 可降低电机运行温升、 减少故障等特点外， 并具有双 向油缸的工作特性， 则具有用途更为广泛的效果。
4、 由于本发明的推杆上的螺母初始位置可位于丝杆的外端部， 推杆上的螺母的 初始位置位于丝杆的外端部， 电机通电旋转工作时， 推杆随螺母沿丝杆做向内缩进移 动， 推杆相当于向内缩进， 即拉动与该推杆连接的构件或机构， 当安装位置不能满足 推杆向外伸出移动的空间时， 本方案结构即具有便于安装的特点。
5、 利用电磁铁的接通电源而解除制动副的制动， 使得与推杆连接的构件或机构 处于 Θ由状况， 便于检修和维护。
下面结合附图和实施例对本发明进一步说明。 附图说明
图 1为本发明的技术方案结构图， 为实施例 1的结构图， 并确定该图为摘附图； 图 2为实施例 2的结构图， 展示了制动副 7—种变形结构的图；
图 3为实施例 3的结构；
图 4为实施例 4的结构图；
图 5为实施例 4使用状态的一种原理图；
图 6为实施例 5的结构图；
图 7为实施例 6的结构图；
图 8为实施例 7的结构图；
图 9为实施例 8的结构图， 展示了本发明方案的一种变形结构；
阁 10为实施例 9的结构图；
图 1 1为实施例 10的结构图；
图 12为实施例 1 1的结构图；
图 13为实施例 12的结构图， 展示了本发明方案的另一种变形结构； 图 14为实施例 13的结构图， 展示了本发明方案的又一种变形结构； 具体实施方式
实施例 1， 参见图 1。
本发明 的技术方案参见图 1， 包括电机 1、 外壳 2， 外壳 2内设有可轴向移动的 推杆 3， 推杆 3内设有丝杆 4， 推杆 3上设有与丝杆 4组成螺纹副的螺母 5。 丝杆 4和 螺母 5优选采用滚珠丝杆与滚珠螺母结构， 但是本发明并不仅限于此， 而可以采用其 它适合形式的螺纹副。 丝杆 4与螺母 5项配合的螺旋升角大于自锁角， 丝杆 4内段上 设有支撑轴承 8， 支撑轴承 8通过构件 1 1连接于外壳 2上， 丝杆 4的内端与电机 1的 轴连接。 具体地说， 本例中， 电机 1位于制动副 7与丝杆 4内端之问， 丝杆 4的内端 与电机 1的轴的输出轴端连接， 如图 1所示， 丝杆 4内端与电机 1的轴的输出轴端通 过联轴器 10连接。 在本发明的电动推动器中， 进一歩设有电磁铁 6和制动副 7， 电磁 铁 6的定铁芯 6c内有作用于动铁芯 6a的弹簧件 6b， 电磁铁 6优选采用直流电磁铁； 制动副 7包括旋转制动盘 7a和平动制动盘 7b， 旋转制动盘 7a与电机 1的轴连接。 具 体地说本例如图 1所示， 旋转制动盘 7a与电机 1 的轴的转轴端连接， 制动副 7作用 于电机 1， 通过对电机 1的制动来阻止丝杆 4旋转， 并在电机 1不通电的节能情况下， 使推杆能够保持处于移动后的状态， 平动制动盘 7b与电磁铁 6的动铁芯 6a连接， 并 可随动铁芯 6a轴向直线移动，制动盘 7b不做旋转； 电磁铁 6通过构件与外壳 2连接， 外壳 2的端壁上设有作用于推杆 3的密封圈 12; 外壳 2由左右 （或上下） 筒体组成。
本例中， 推杆 3上的螺母 5的初始位置位于丝杆 4的内端部， 电机 1通电旋转工 作时， 推杆 3随螺母 5沿丝杆 4做向外伸出移动， 推杆 3相当于向外推出， 即推动与 该推杆连接的构件或机构； 电磁铁 6处于通电状态， 如图 1所示， 平动制动盘 7b与 旋转制动盘 7a处于脱幵状态， 推杆 3为复位于丝杆 4内端部的状态； 当切断电磁铁 6 的电源时， 平动制动盘 7b与旋转制动盘 7a即结合， 产生制动力， 将保持推杆 3复位 于丝杆 4内端部的状态。 制动副 7的旋转制动盘 7a和平动制动盘 7b为环状接合面， 具体而言， 旋转制动盘 7a和平动制动盘 7b之一设置有制动摩擦面， 在相互啮合以进 行制动时， 旋转制动盘 7a和平动制动盘 7b的结合面为平面。
实施例 2， 参见图 2。
本例以实施例 1为基础， 对制动副 7的结构进行变形， 图 1中所示制动副 7的旋 转制动盘 7a和平动制动盘 7b为环状接合面，本例中的制动副的旋转制动盘 7a和平动 制动盘 7b为凸台式结合面， 其他同实施例 1所述。 具体而言， 在图 1所示的实施例 基础上， 旋转制动盘 7a上制动摩擦面的一部分设置到平动制动盘 7b上， 从而形成一 种凸台式结构。
实施例 3， 参见图 3。
本例与实施例 1不同的是， 推杆 3上的螺母 5的初始位置位于丝杆 4的外端部， 电机 1通电旋转工作时， 推杆 3随螺母 5沿丝杆 4做向内縮进移动， 推杆 3相当于向 内缩进， 即拉动与该推杆连接的构件或机构； 电磁铁 6处于断电状态， 如图 1所示， 平动制动盘 7b与旋转制动盘 7a处于结合状态， 即通过平动制动盘 7b与旋转制动盘 7a结合所产生的制动力， 使推杆 3保持在复位于丝杆 4外端部后的状态。 其他同实施 例 1。
实施例 4， 参见图 4。
本例与实施例 1不同的是， 推杆 3上的螺母 5的初始位置位于丝杆 4的中部， 电 机 1通 Fli后产生的正或反转， 推杆 3随螺母 5沿丝杆 4做向内缩进或向外伸出移动， 如图 5所示，当推杆 3相当于向内缩进移动时，即拉动与该推杆连接的构件或机构 13， 当推杆 3相当于向外伸出移动时， 即推动与该推杆连接的构件或机构 13 ; 图 4所示， 电磁铁 6处于断电状态， 平动制动盘 7b与旋转制动盘 7a处于结合状态， 即通过平动 制动盘 7b与旋转制动盘 7a结合所产生的制动力， 使推杆 3保持在复位于丝杆中部。
实施例 5， 见图 6。
本例中， 支撑轴承 8采用双轴承结构， 且采用推力轴承， 以满足在重负荷工况下 对丝杆 4的支撑， 其他见图示与实施例 4所述。
实施例 6， 见图 7。
图 7所示为本发明技术方案中电机 1与电磁铁 6设置方式的一种变形结构。 包括 电机 1、 外壳 2， 外壳 2内设有可轴向移动的推杆 3， 推杆 3内设有丝杆 4， 推杆 3上 设有与丝杆 4组成螺纹副的螺母 5， 丝杆 4与螺母 5项配合的螺旋升 Λ大于自锁角， 丝杆 4内段上设有支撑轴承 8， 丝杆 4的内端与电机 1的轴连接， 设有电磁铁 6和制 动副 7, 电磁铁 6的定铁芯 6c内有作用于动铁芯 6a的弹簧件 6b， 制动副 7包括旋转 制动盘 7a和平动制动盘 7b， 旋转制动盘 7a与电机 1的轴连接， 平动制动盘 7b与电 磁铁 6的动铁芯 6a连接， 并可随动铁芯 6a轴向直线移动。
如图 7所示， 所述电机 1位于电磁铁 6的外端， 电磁铁 6优选采用直流电磁铁； 电机 1的输出轴穿过电磁铁 6， 通过联轴器 10与丝杆 4内端连接， 制动副 7中的旋转 制动盘 7a连接于电机 1的输出轴上， 平动制动盘 7b同样与动铁芯 6a连接。
实施例 7, 参见图 8。
图 8所示为本发明技术方案中电机 1与电磁铁 6设置方式的第二种变形结构。 图 1〜图 4和图 6所示结构中， 电机 1位于制动副 1与丝杆 4的内端之间， 本例 的电机 1位于电磁铁 6与丝杆 4内端之间， 电机 1的轴的转轴端穿过电磁铁 6， 所述 旋转制动盘 7a与电机 1的轴的转轴端连接，平动制动盘 7b同样与动铁芯 6a连接。其 他见图示和前述实施例中的相应部分描述。
实施例 8， 参见图 9。 图 9为图 1所示发明技术方案的一种变形结构。
本实施例以实施例 1为基础， 与实施例 1 不同的是， 在实施例 1中， 丝杆 4与电 机 1的轴线共线。 与之相对， 在本实施例 8中， 丝杆 4与电机 1的轴线不共线， 例如 相互平行。 进而， 在丝杆 4与电机 1之间设置传动机构 9， 包括电机 1、 外壳 2， 外壳 2内设有可轴向移动的推杆 3， 推杆 3内设有丝杆 4， 推杆 3上设有与丝杆 4组成螺纹 副的螺母 5， 丝杆 4与螺母 5项配合的螺旋升角大于自锁角， 丝杆 4内段上设有支撑 轴承 8 , 丝杆 4内端与传动机构 9中的被动传动件％连接， 传动机构 9中的主动传动 件 9a与电机 1的轴连接， 如图所示， 传动机构 9中的主动传动件 9a与电机 1的轴的 输出轴端连接， 电机 1与推杆 3为平行轴线布置； 设有电磁铁 6和制动副 7， 电磁铁 6的定铁芯 6c内有作用于动铁芯 6a的弹簧件 6b，制动副 7包括旋转制动盘 7a和平动 制动盘 7b， 旋转制动盘 7a与传动机构 9中的主动传动件 9a连接， 丝杆 4内端还设有 支撑轴承 8'，即支撑轴承 8为双轴承结构；旋转制动盘 7a与电机 1的轴连接，具体地， 本例中的旋转制动盘 7a与电机 1的轴的输出轴端连接， 平动制动盘 7b与电磁铁 6的 动铁芯 6a连接， 并可随动铁芯 6a轴向直线移动。
在上述以及下述实施例中， 传动机构 9可以为链传动、 齿轮传动、 带传动等适宜 的传动形式。 例如， 主动传动件 9a可以为主动齿轮， 从动传动件 9b为从动齿轮。
实施例 9， 参见图 10。
如图所示， 本例与实施例 8不同的是， 推杆 3上的螺母 5的初始位置位于丝杆 4 的中部， 其他同实施例 8所述。
实施例 10， 参见图 1 1。
本例为图 9、 图 10所示变形方案中电机 1与电磁铁 6设置方式的一种变形结构。 如图所示， 电磁铁 6位于电机 1的轴的转轴端， 电机 1的转轴端穿过电磁铁 6与 旋转制动盘 7a连接，平动制动盘 7b同样与电磁铁 6的动铁芯 6a连接， 电机 1的轴的 输出轴端同样与传动机构 9中的主动传动件 9a连接。
实施例 1 1， 参见图 12。
图 12所示为图 9、 图 10所示变形方案中电机 1与电磁铁 6设置方式的又一种变 形结构。 如图所示， 电磁铁 6位于电机 1与主动传动件 9a之间， 电机 1 的轴的输出 轴端穿过电磁铁 6同样与主动传动件 9a连接， 旋转制动盘 7a与电机 1的轴的输出轴 端连接， 平动制动盘 7b同样与电磁铁 6的动铁芯 6a连接。
图 13为实施例 12的结构图， 展示了为图 1所示发明方案的另一种变形结构； 本实施例以实施例 1为基础， 与实施例 1不同的是， 所述丝杆 4、 所述制动副 7 与屯机 1的轴线不共线。 如图 13所示， 在丝杆 4与电机 1之间设置传动机构 9， 包括 电机 1、 外壳 2， 外壳 2内设有可轴向移动的推杆 3， 推杆 3内设有丝杆 4， 推杆 3上 设有与丝杆 4组成螺纹副的螺母 5 , 丝杆 4与螺母 5项配合的螺旋升角大于自锁角， 丝杆 4内段上设有支撑轴承 8， 丝杆 4内端与传动机构 9中的被动传动件％连接， 传 动机构 9中的主动传动件 9a与电机 1 的轴连接， 如图所示， 传动机构 9中的主动传 动件 9a与电机 1的轴的输出轴端连接， 电机 1 与推杆 3为平行轴线布置； 设有电磁 铁 6和制动副 7， 电磁铁 6的定铁芯 6c内有作用于动铁芯 6a的弹簧件 6b， 制动副 7 包括旋转制动盘 7a和平动制动盘 7b，旋转制动盘 7a与传动机构 9中的中间传动件 9c 连接， 丝杆 4 内端还设有支撑轴承 8'， 即支撑轴承 8为双轴承结构； 平动制动盘 7b 与电磁铁 6的动铁芯 6a连接， 并可随动铁芯 6a轴向直线移动。
在上述实施方式中，传动机构 9不局限于任何一种传动形式，例如可以为链传动、 齿轮传动、 带传动等适宜的传动形式。 例如， 主动传动件 9a可以为主动齿轮， 从动 传动件％为从动齿轮， 中间传动件 9c可以为中间传动齿轮。
虽然在上述实施例中， 所述丝杆 4、 所述制动副 7与电机 1 的轴线相互平行， 但 本发明并不仅限于此，例如其轴线也可以采用其它不共线的方式，例如轴线倾斜倾角， 此时中间传动机构也可釆用斜齿轮等形式。
图 14为实施例 13的结构图， 展示了为图 1所示发明方案的又一种变形结构； 本实施例以实施例 1为基础， 在丝杆 4与电机 1之间设置传动机构 9， 包括电机 1、 外壳 2 , 外壳 2内设有可轴向移动的推杆 3 , 推杆 3内设有丝杆 4， 推杆 3上设有 与丝杆 4组成螺纹副的螺母 5， 丝杆 4与螺母 5项配合的螺旋升角大于自锁角， 丝杆 4内段上设有支撑轴承 8， 丝杆 4内端与传动机构 9中的被动传动件 9b连接， 传动机 构 9中的主动传动件 9a与电机 1 的轴连接， 如图所示， 传动机构 9中的主动传动件 9a与电机 1的轴的输出轴端连接， 电机 1与推杆 3为平行轴线布置； 设有电磁铁 6和 制动副 7， 电磁铁 6的定铁芯 6c内有作用于动铁芯 6a的弹簧件 6b， 制动副 7包括旋 转制动盘 7a和平动制动盘 7b， 旋转制动盘 7a与传动机构 9中的被动传动件 9b连接， 丝杆 4内端还设有支撑轴承 8'， 即支撑轴承 8为双轴承结构， 平动制动盘 7b与电磁 铁 6的动铁芯 6a连接， 并可随动铁芯 6a轴向直线移动；
本发明方案还可为多种变形结构。
本发明的任一一种结构， 推杆 3上的螺母 5的初始位置可位于丝杆 4的内端部， 也可位于丝杆 4的中部或外端部。
¾然本总体发明构思的一些实施例巳被显示和说明， 本领域普通技术人员将理 解， 在不背离本总体发明构思的原则和精神的情况下， 可对这些实施例做出改变， 本 发明的范围以权利要求和它们的等同物限定。

Claims

权 利 要 求
1、 一种电动推动装置， 包括电机 (1)、 外壳 (2)， 外壳 (2)内设有可轴向移动的推杆 (3)， 推杆 (3)内设有丝杆 (4), 丝杆 (4)的螺旋升角大于自锁角， 其特征是： 推杆 (3)内端 设有与丝杆 (4)组成螺纹副的螺母 (5)， 丝杆 (4)内段上有支撑轴承 (8)， 丝杆 (4)内端与电 机 (1)的轴连接， 设有电磁铁 (6)和制动副 (7)， 电磁铁 (6)的定铁芯 (6c)内有作用于动铁芯 (6a)的弹簧 (6b)， 制动副 (7)包括旋转制动盘 (7a)和平动制动盘 (7b)， 旋转制动盘 (7a)与电 机 (1)的轴连接， 平动制动盘 (7b)与电磁铁 (6)的动铁芯 (6a)连接， 并可随动铁芯 (6a)轴向 直线移动。
2、 根据权利要求 1所述一种电动推动装置， 其特征是： 所述电机 (1)位于制动副
(7)与丝杆 (4)内端之间， 所述丝杆 (4)内端与电机 (1)的轴的输出轴端连接， 所述旋转制 动盘 7a与电机 (1)的轴的转轴端连接。
3、 根据权利要求 1所述一种电动推动装置， 其特征是： 所述电机 (1)位于电磁铁 (6)的外端，电机 (1)的轴的输出轴端穿过电磁铁 (6)通过联轴器 (10)与所述丝杆 (4)内端连 接， 所述旋转制动盘 (7a)连接于电机 (1)的轴的输出轴端上。
4、 根据权利要求 1所述一种电动推动装置， 其特征是： 所述电机 (1)位于电磁铁 (6)与丝杆 (4)内端之间， 电机 (1)的轴的转轴端穿过电磁铁 (6)， 所述旋转制动盘 (7a)与电 机 (1)的轴的转轴端连接。
5、 根据权利要求 1所述一种电动推动装置， 其特征是： 所述丝杆 (4)与电机 (1)的 轴线不共线， 在丝杆 (4)与电机 (1)之间设置传动机构 (9), 所述丝杆 (4)内端与传动机构
(9)中的被动传动件 (9b)连接， 传动机构 (9)中的主动传动件 (9a)与电机 (1)的轴的输出轴 端连接， 所述制动副 (7)中的旋转制动盘 (7a)与传动机构 (9)中的主动传动件 (9a)连接。
6、 根据权利要求 5所述一种电动推动装置， 其特征是： 所述电机 (1)位于主动传 动件 (9a)与电磁铁 (6)之间， 电机 (1)的轴的转轴端穿过电磁铁 (6)，所述旋转制动盘（7a) 与电机 (1)的轴的转轴端连接。
丁、 根据权利要求 5所述一种电动推动装置， 其特征是： 所述电磁铁 (6)位于电机 (1) 与旋转制动盘 (7a)之间， 所述电机 (1)的轴的输出轴端穿过电磁铁 (6)与主动传动件 (9a)连接， 所述旋转制动盘 (7a)与电机 (1)的轴的输出轴端连接。
8、 根据权利要求 1 所述一种电动推动装置， 其特征是： 所述丝杆 (4)、 所述制动 副 (7)与电机 (1)的轴线不共线， 在丝杆 (4)与电机 (1)之间设置传动机构 (9)， 所述丝杆 (4) 内端与传动机构 (9)中的被动传动件 (9b)连接， 传动机构 (9)中的主动传动件 (9a)与电机 (1)的输出轴连接，所述制动副 (7)中的旋转制动盘 (7a)与传动机构 (9)中的中间传动件 (9c) 连接。
9、 根据权利要求 1所述一种电动推动装置， 其特征是： 所述丝杆 (4)与电机 (1)的 轴线不共线， 在丝杆 (4)与电机 (1)之间设置传动机构 (9), 所述丝杆 (4)内端与传动机构 (9)中的被动传
动件 (9b)连接， 传动机构 (9)中的主动传动件 (9a)与电机 (1)的轴的输出轴端连接， 所述制动副 (7)中的旋转制动盘 (7a)与传动机构 (9)中的被动传动件 (％)连接。
10、 根据权利要求 1〜9的任一一种电动推动装置， 其特征是： 所述推杆 (3)上的 螺母 (5)的初始位置位于丝杆 (4)的内端部或中部或外端部。
1 1、 根据权利要求 1〜9的任一一种电动推动装置， 其特征是： 所述电磁铁 (6)为 直流电磁铁。
PCT/CN2010/072651 2009-05-14 2010-05-12 一种电动推动装置 WO2010130203A1 (zh)

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