CN113241972B - Motor braking device - Google Patents

Motor braking device

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Publication number
CN113241972B
CN113241972B CN202110546084.9A CN202110546084A CN113241972B CN 113241972 B CN113241972 B CN 113241972B CN 202110546084 A CN202110546084 A CN 202110546084A CN 113241972 B CN113241972 B CN 113241972B
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CN
China
Prior art keywords
iron core
motor
push plate
driving member
switch
Prior art date
Legal status (The legal status 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 status listed.)
Active
Application number
CN202110546084.9A
Other languages
Chinese (zh)
Other versions
CN113241972A (en
Inventor
魏献通
石云志
魏巍
石一涵
魏笑晗
苏怡璇
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Pingdingshan Senyuan Electric Co ltd
Original Assignee
Pingdingshan Senyuan Electric Co ltd
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
Application filed by Pingdingshan Senyuan Electric Co ltd filed Critical Pingdingshan Senyuan Electric Co ltd
Priority to CN202110546084.9A priority Critical patent/CN113241972B/en
Publication of CN113241972A publication Critical patent/CN113241972A/en
Application granted granted Critical
Publication of CN113241972B publication Critical patent/CN113241972B/en
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Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P3/00—Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters
    • H02P3/02—Details of stopping control
    • H02P3/04—Means for stopping or slowing by a separate brake, e.g. friction brake or eddy-current brake
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/22—Power arrangements internal to the switch for operating the driving mechanism
    • H01H3/28—Power arrangements internal to the switch for operating the driving mechanism using electromagnet
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/32—Driving mechanisms, i.e. for transmitting driving force to the contacts
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P23/00—Arrangements or methods for the control of AC motors characterised by a control method other than vector control
    • H02P23/24—Controlling the direction, e.g. clockwise or counterclockwise
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P25/00—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details
    • H02P25/02—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details characterised by the kind of motor
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P3/00—Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters
    • H02P3/06—Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters for stopping or slowing an individual dynamo-electric motor or dynamo-electric converter
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P7/00—Arrangements for regulating or controlling the speed or torque of electric DC motors
    • H02P7/03—Arrangements for regulating or controlling the speed or torque of electric DC motors for controlling the direction of rotation of DC motors
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P7/00—Arrangements for regulating or controlling the speed or torque of electric DC motors
    • H02P7/03—Arrangements for regulating or controlling the speed or torque of electric DC motors for controlling the direction of rotation of DC motors
    • H02P7/05—Arrangements for regulating or controlling the speed or torque of electric DC motors for controlling the direction of rotation of DC motors by means of electronic switching

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)

Abstract

本发明提出一种电机制动装置，包括框架，框架内分别设置有用于控制电机正转的第一螺旋管电磁铁和用于控制电机反转的第二螺旋管电磁铁；所述第一螺旋管电磁铁和第二螺旋管电磁铁均包括线圈、动铁芯和静铁芯，静铁芯套设在动铁芯的一端，线圈环绕在动铁芯和静铁芯的外侧；动铁芯的一端伸出静铁芯并连接有第一驱动件，动铁芯的另一端连接有第二驱动件，且第一驱动件连接有驱动开关，第二驱动件通过第三驱动件连接有限位开关。本发明设置两个螺旋管电磁铁来分别控制电机正反转，两个螺旋管电磁铁中的线圈得电时，将分别控制电机正反转，线圈失电后自动形成预备制动回路，当电气回路中开关SL3动作时，电机将瞬间制动，实现制动迅速、可靠。

The present invention provides a motor braking device, comprising a frame, wherein a first solenoid electromagnet for controlling the forward rotation of the motor and a second solenoid electromagnet for controlling the reverse rotation of the motor are respectively arranged within the frame; the first solenoid electromagnet and the second solenoid electromagnet each comprise a coil, a moving iron core, and a stationary iron core, the stationary iron core being sleeved on one end of the moving iron core, and the coil surrounding the outer sides of the moving iron core and the stationary iron core; one end of the moving iron core extends outward from the stationary iron core and is connected to a first driving member, the other end of the moving iron core is connected to a second driving member, the first driving member is connected to a driving switch, and the second driving member is connected to a limit switch via a third driving member. The present invention provides two solenoid electromagnets to respectively control the forward and reverse rotation of the motor. When the coils in the two solenoid electromagnets are energized, they will respectively control the forward and reverse rotation of the motor. When the coils are de-energized, a preparatory braking circuit is automatically formed. When the switch SL3 in the electrical circuit is actuated, the motor will be braked instantaneously, achieving rapid and reliable braking.

Description

Motor braking device
Technical Field
The invention relates to the technical field of motor braking, in particular to a motor braking device.
Background
With the development of economy and the progress of scientific technology, the electric actuator is widely applied in the industrial field, and meanwhile, the control technology of the electric actuator is improved and updated to a certain extent. The motor operating mechanism is power equipment for operating the high-voltage isolating switch and the high-voltage grounding switch, the motor drives the output shaft of the mechanism to rotate through the speed reducing device, and then contacts on the switch body do opening and closing motions through a mechanical transmission connecting rod connected with the output shaft, after opening and closing in place, a travel switch in the mechanism is disconnected with a control power supply, the motor stops rotating, and the opening and closing operation is completed. Because of the existence of the rotation inertia of the motor, the motor after power failure can still rotate continuously for a certain time, and in order to ensure the accuracy of the output rotation angle of the mechanism, the mechanical limiting device is designed on the mechanism transmission structure, but if the inertia is too large, the transmission crank arm on the mechanism can violently strike the mechanical limiting device, and a certain link of transmission is damaged. In order to reduce or even eliminate the inertia of the motor after power failure, it is necessary to apply braking measures to the motor at the instant of power failure. However, in the existing electric actuating mechanism adopting a three-phase motor, an ideal technical solution with good braking effect and low use cost is not available for the motor braking problem.
Disclosure of Invention
Aiming at the defects in the background technology, the invention provides the motor braking device which has the advantages of simple overall structure, reasonable design, reliable braking, high safety and stable operation, and can realize quick braking.
The motor braking device comprises a frame, a first spiral tube electromagnet used for controlling forward rotation of a motor and a second spiral tube electromagnet used for controlling reverse rotation of the motor are respectively arranged in the frame, the first spiral tube electromagnet and the second spiral tube electromagnet comprise a coil, a movable iron core and a static iron core, the static iron core is sleeved at one end of the movable iron core, the coil surrounds the outer sides of the movable iron core and the static iron core, one end of the movable iron core extends out of the static iron core and is connected with a first driving piece, the other end of the movable iron core is connected with a second driving piece, the first driving piece is connected with a driving switch, and the second driving piece is connected with a limit switch through a third driving piece.
The frame comprises a first fixing plate, a second fixing plate and a third fixing plate, wherein the number of the first fixing plate, the number of the second fixing plate and the number of the third fixing plate are two, the first fixing plate, the second fixing plate and the number of the third fixing plate are riveted to form a rectangular frame structure, and a closed magnetic loop is formed.
The first driving piece comprises a first push plate and a second push plate, the first push plate is connected with the movable iron core in the first spiral tube electromagnet, and the second push plate is connected with the movable iron core in the second spiral tube electromagnet.
The second driving piece comprises a third push plate and a fourth push plate, the third push plate is connected with the movable iron core in the first spiral tube electromagnet, and the fourth push plate is connected with the movable iron core in the second spiral tube electromagnet.
The third driving piece comprises a cam, and the third pushing plate and the fourth pushing plate are connected with the limit switch through the cam.
The driving switch comprises a first driving switch group connected with the first push plate and a second driving switch group connected with the second push plate, wherein the first driving switch group and the second driving switch group comprise four self-resetting microswitches which are matched with corresponding movable iron cores.
The limit switch comprises two self-resetting microswitches, and the two self-resetting microswitches are matched with the cam.
According to the invention, two solenoid electromagnets are arranged to respectively control the motor to rotate positively and negatively, when the movable iron core in the two solenoid electromagnets acts, the push plate at one end of the movable iron core can directly drive four driving switches to act, the push plate at the other end of the movable iron core drives two limit switches to act through the cam, the driving switches reset after the coil is deenergized, the limit switches keep an action state after the coil is deenergized, the two coils respectively act to control the motor to rotate positively and negatively, a preparation braking loop is automatically formed after the coil is deenergized, and when the switch SL3 acts in the electric loop, the motor is braked instantly, so that the braking is rapid, and the brake is reliable, and has the advantages of simple integral structure, reasonable design, high safety and stable work.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a top view of FIG. 1;
FIG. 3 is a left side view of FIG. 1;
FIG. 4 is a right side view of FIG. 1;
FIG. 5 is a schematic diagram of the position of the driving switch according to the present invention;
FIG. 6 is an electrical diagram of motor forward and reverse rotation and brake control according to the present invention;
FIG. 7 is a forward control electrical diagram of the motor of the present invention;
FIG. 8 is a motor forward rotation braking electrical diagram of the present invention;
FIG. 9 is an electrical diagram of motor reversal control according to the present invention;
fig. 10 is an electrical diagram of motor reverse braking according to the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without any inventive effort, are intended to be within the scope of the invention.
As shown in fig. 1 and 2, the present invention provides a motor braking device, which comprises a frame 1, wherein the frame 1 comprises a first fixing plate 11, a second fixing plate 12 and a third fixing plate 13, and the number of the first fixing plate 11, the second fixing plate 12 and the third fixing plate 13 is two and are mutually riveted to form a rectangular frame structure to form a closed magnetic circuit. The frame 1 is respectively provided with a first spiral pipe electromagnet KA for controlling the forward rotation of the motor and a second spiral pipe electromagnet KE for controlling the reverse rotation of the motor, and the first spiral pipe electromagnet KA and the second spiral pipe electromagnet KE respectively comprise a coil 4, a movable iron core 5 and a static iron core 6, the static iron core 6 is sleeved at one end of the movable iron core 5, and the coil 4 surrounds the outer sides of the movable iron core 5 and the static iron core 6. One end of a movable iron core 5 in the first spiral pipe electromagnet KA or the second spiral pipe electromagnet KE extends out of the static iron core 6 and is connected with a first driving piece 7, the other end of the movable iron core is connected with a second driving piece 8, the first driving piece 7 is connected with a driving switch 9, and the second driving piece 8 is connected with a limit switch 11 through a third driving piece 10. When the movable iron core 5 in the first spiral tube electromagnet KA or the second spiral tube electromagnet KE acts, the corresponding first driving piece 7 can directly drive the driving switch 9 to act, and the corresponding second driving piece 8 drives the limit switch 11 to act through the third driving piece 10.
In this embodiment, as shown in fig. 3 and 4, the first driving member 7 includes a first pushing plate 71 and a second pushing plate 72, the first pushing plate 71 is connected to one end of the movable iron core 5 in the first solenoid electromagnet KA, and the second pushing plate 72 is connected to one end of the movable iron core 5 in the second solenoid electromagnet KE. The second driving member 8 includes a third push plate 81 and a fourth push plate 82, the third push plate 81 is connected to the other end of the movable iron core 5 in the first solenoid electromagnet KA, and the fourth push plate 82 is connected to the other end of the movable iron core 5 in the second solenoid electromagnet KE. The third driving member 10 includes a cam, and the third push plate 81 and the fourth push plate 82 are both connected to the limit switch 11 through the cam. The driving switch 9 includes a first driving switch group 91 connected to the first push plate 71 and a second driving switch group 92 connected to the second push plate 72, where the first driving switch group 91 and the second driving switch group 92 include four self-resetting micro switches, the positional relationships of the four self-resetting micro switches are shown in fig. 5, and the four self-resetting micro switches are matched with the corresponding movable iron cores 5. The limit switch 11 comprises two self-resetting microswitches SL4 and SL5, which are both matched with the cam. In this embodiment, all the self-resetting micro switches are operated along with the corresponding moving iron core, that is, when the first solenoid electromagnet KA is electrified, the moving iron core in KA is electrified to generate an action, the first push plate drives the four self-resetting micro switches of the first driving switch group to act, the third push plate drives the two self-resetting micro switches of the limit switch to act through the cam, so that the driving motor rotates positively, when the second solenoid electromagnet KE is electrified, the moving iron core in KE is electrified to generate an action, the second push plate drives the four self-resetting micro switches of the second driving switch group to act, and the fourth push plate drives the two self-resetting micro switches of the limit switch to act through the cam, so that the driving motor rotates reversely.
The motor braking device in this embodiment is used as a contactor, and the three-station isolating switch is used as an operating mechanism to control the working state of the motor braking device, and is specially used for controlling and braking the forward and reverse rotation of the ac/dc dual-purpose series motor, and a specific motor forward and reverse rotation and braking control loop is shown in fig. 6. When the motor rotates positively, the control loop is shown in fig. 7, the normally open contact-KA 1 and the normally open contact-KA 2 which are connected in series at the two ends of the coil M in the first solenoid electromagnet KA are both closed, and the normally open contact-KA 1 is connected with the positive pole ML + of the power supply, so that the coil of the first solenoid electromagnet KA is electrified, the normally open contact-KA 2 is connected in series with the normally closed contact-KE 3 of the second solenoid electromagnet KE, the normally closed contact-KE 3 is connected in series with the ZH2 end of the motor, the normally open contact-KA 6 connected in series with the ZH1 end of the motor is closed, and the normally open contact-KA 6 is connected with the negative pole ML - of the power supply, thereby forming a motor forward rotation control loop, and when the circuit is conducted, the motor rotates positively. When the coil in the first solenoid electromagnet KA is electrified, the motor rotates positively, a preparation brake loop is automatically formed after the coil is deenergized, when SL3 in the electric loop acts, the motor brakes instantaneously, the corresponding brake loop in the forward rotation of the motor is shown in figure 8, the switch SL3 is closed and connected with the D4 end of the coil, the D3 end of the coil is connected with the normally closed contact-KA 4 in series through the resistor R, the normally closed contact-KA 4 is connected with the normally closed contact-KE 4 in series, the normally closed contact-KE 4 is connected with the switch SL4, the NC contact of the switch SL4 is conducted and connected with the ZH2 end of the motor, the ZH1 end of the motor is connected with the switch SL5, the NC contact of the switch SL5 is conducted, and the switch SL5 is connected with the normally closed contact-KE 5, and the normally closed contact-KA 5 is connected with the switch SL3, thereby the forward rotation brake loop of the motor is formed.
When the motor rotates reversely, the control loop is shown in fig. 9, the normally open contact-KE 1 and the normally open contact-KE 2 which are connected in series at the two ends of the coil M in the second spiral tube electromagnet KE are closed, the normally open contact-KE 1 is connected with the positive pole ML + of the power supply, so that the coil of the second spiral tube electromagnet KE is electrified, the normally open contact-KE 2 is connected with the normally closed contact-KA 3 of the first spiral tube electromagnet KA in series, the normally closed contact-KA 3 is connected with the ZH2 end of the motor in series, the normally open contact-KE 6 connected with the ZH1 end of the motor in series is closed, and the normally open contact-KE 6 is connected with the negative pole ML - of the power supply, thereby forming a motor reverse control loop, and when the circuit is conducted, the motor is reversed. When the coil in the second spiral tube electromagnet KE is electrified, the motor is reversely rotated, a preparation brake loop is automatically formed after the coil is deenergized, and when the corresponding motor is reversely rotated in the same electric loop, the brake loop is shown in figure 10, the switch SL3 is closed and connected with the D4 end of the coil, the D3 end of the coil is connected with the normally closed contact-KA 4 in series through the resistor R, the normally closed contact-KA 4 is connected with the normally closed contact-KE 4 in series, the normally closed contact-KE 4 is connected with the switch SL4 in series, the NO contact of the switch SL4 is conducted and connected with the ZH1 end of the motor, the ZH2 end of the motor is communicated with the switch SL5, the NO contact of the switch SL5 is conducted, the switch SL5 is connected with the normally closed contact-KE 5, the normally closed contact-KA 5 is connected with the switch SL3 in series, and therefore the motor reversely rotated brake loop is formed.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the invention.

Claims (4)

1.一种电机制动装置，其特征在于：包括框架，框架内分别设置有用于控制电机正转的第一螺旋管电磁铁和用于控制电机反转的第二螺旋管电磁铁；1. A motor brake device, comprising a frame, wherein a first solenoid electromagnet for controlling the forward rotation of the motor and a second solenoid electromagnet for controlling the reverse rotation of the motor are disposed within the frame; 所述第一螺旋管电磁铁和第二螺旋管电磁铁均包括线圈（4）、动铁芯（5）和静铁芯（6），静铁芯（6）套设在动铁芯（5）的一端，线圈（4）环绕在动铁芯（5）和静铁芯（6）的外侧；动铁芯（5）的一端伸出静铁芯（6）并连接有第一驱动件（7），动铁芯（5）的另一端连接有第二驱动件（8），且第一驱动件（7）连接有驱动开关（9），第二驱动件（8）通过第三驱动件（10）连接有限位开关（11）；The first solenoid electromagnet and the second solenoid electromagnet both comprise a coil (4), a moving iron core (5) and a static iron core (6); the static iron core (6) is sleeved on one end of the moving iron core (5), and the coil (4) surrounds the outer sides of the moving iron core (5) and the static iron core (6); one end of the moving iron core (5) extends out of the static iron core (6) and is connected to a first driving member (7); the other end of the moving iron core (5) is connected to a second driving member (8), and the first driving member (7) is connected to a driving switch (9); the second driving member (8) is connected to a limit switch (11) via a third driving member (10); 所述第一驱动件（7）包括第一推板（71）和第二推板（72），第一推板（71）与第一螺旋管电磁铁中的动铁芯（5）相连接，第二推板（72）与第二螺旋管电磁铁中的动铁芯（5）相连接；The first driving member (7) includes a first push plate (71) and a second push plate (72), the first push plate (71) being connected to the moving iron core (5) in the first solenoid electromagnet, and the second push plate (72) being connected to the moving iron core (5) in the second solenoid electromagnet; 所述第二驱动件（8）包括第三推板（81）和第四推板（82），第三推板（81）与第一螺旋管电磁铁中的动铁芯（5）相连接，第四推板（82）与第二螺旋管电磁铁中的动铁芯（5）相连接；The second driving member (8) includes a third push plate (81) and a fourth push plate (82), the third push plate (81) is connected to the moving iron core (5) in the first solenoid electromagnet, and the fourth push plate (82) is connected to the moving iron core (5) in the second solenoid electromagnet; 所述第三驱动件（10）包括凸轮，第三推板（81）和第四推板（82）均通过凸轮与限位开关（11）相连接；The third driving member (10) includes a cam, and the third push plate (81) and the fourth push plate (82) are both connected to the limit switch (11) via the cam; 所述驱动开关（9）包括与第一推板（71）相连接的第一驱动开关组（91）和与第二推板（72）相连接的第二驱动开关组（92）；The driving switch (9) comprises a first driving switch group (91) connected to the first push plate (71) and a second driving switch group (92) connected to the second push plate (72); 驱动开关在线圈失电后复位，限位开关在线圈失电后保持动作状态，两个线圈分别动作控制电机正反转，当线圈失电后自动形成预备制动回路，当电气回路中开关动作时，电机瞬间制动。The drive switch resets after the coil loses power, and the limit switch remains in the action state after the coil loses power. The two coils act separately to control the forward and reverse rotation of the motor. When the coil loses power, a preparatory braking circuit is automatically formed. When the switch in the electrical circuit is actuated, the motor brakes instantly. 2.根据权利要求1所述的电机制动装置，其特征在于：所述框架包括第一固定板（1）、第二固定板（2）和第三固定板（3），第一固定板（1）、第二固定板（2）和第三固定板（3）的数量均设置有两个且相互铆接成一个矩形框架结构、并形成闭合的磁回路。2. The motor brake device according to claim 1, characterized in that the frame comprises a first fixing plate (1), a second fixing plate (2) and a third fixing plate (3), and there are two of each of the first fixing plate (1), the second fixing plate (2) and the third fixing plate (3), which are riveted to each other to form a rectangular frame structure and a closed magnetic circuit. 3.根据权利要求2所述的电机制动装置，其特征在于：第一驱动开关组（91）和第二驱动开关组（92）均包括四个自复位微动开关，且四个自复位微动开关均与对应的动铁芯（5）相配合。3. The motor braking device according to claim 2, characterized in that: the first drive switch group (91) and the second drive switch group (92) each include four self-resetting micro switches, and the four self-resetting micro switches are all matched with corresponding moving iron cores (5). 4.根据权利要求3所述的电机制动装置，其特征在于：所述限位开关（11）包括两个自复位微动开关，且两个自复位微动开关均与凸轮相配合。4. The motor braking device according to claim 3, characterized in that the limit switch (11) includes two self-resetting micro switches, and both of the self-resetting micro switches cooperate with the cam.
CN202110546084.9A 2021-05-19 2021-05-19 Motor braking device Active CN113241972B (en)

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CN113241972B true CN113241972B (en) 2025-10-17

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CN214674953U (en) * 2021-05-19 2021-11-09 平顶山森源电气有限公司 Motor braking device

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