CN218771656U - Electric push rod based on permanent magnet brushless direct current motor with position sensor - Google Patents
Electric push rod based on permanent magnet brushless direct current motor with position sensor Download PDFInfo
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- CN218771656U CN218771656U CN202222839674.3U CN202222839674U CN218771656U CN 218771656 U CN218771656 U CN 218771656U CN 202222839674 U CN202222839674 U CN 202222839674U CN 218771656 U CN218771656 U CN 218771656U
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- push rod
- current motor
- motor
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Abstract
The utility model discloses an electric putter based on take position sensor's brushless DC motor of permanent magnetism, include: brushless DC motor, drive mechanism, screw push rod and integrated controller for controlling brushless DC motor and serial communication or parallel control. The integrated controller is used for controlling the forward rotation or the reverse rotation of the brushless direct current motor through connecting an electric signal, the brushless direct current motor is used for controlling the extension or the retraction of the threaded push rod through the driving transmission mechanism, and the problems that a direct current motor mechanical commutator, a limit position stop limit switch and a relay for controlling the extension and the retraction of the threaded push rod of the direct current motor in the threaded push rod of the direct current motor are short in service life and high in failure rate are solved. In addition, the problems of contact arc damage and fatigue damage of a mechanical spring caused by electric spark and mechanical abrasion of a commutator and forced current shutoff of a relay and contact arc damage and fatigue damage of a limit position stop limit switch are solved.
Description
Technical Field
The utility model relates to an electric putter or electric jar and permanent magnetism brushless DC motor technical field, concretely relates to permanent magnetism brushless DC motor's electric putter based on take position sensor.
Background
At present, an electric push rod is basically driven by a direct current motor without rotor position information, the electric push rod extends or retracts by positive and negative direct currents applied, the electric push rod is pressed to a limit position switch to realize the limit position stop protection or positioning control of the electric push rod, in practical application, a relay is usually adopted to realize the reversing control of the positive and negative polarities of a direct current power supply, and then the rotation direction of the direct current motor is controlled to realize the retraction or extension of the electric push rod;
the electric push rod based on the direct current motor has the defects of short service life and high failure rate of the direct current motor, the limit switch and the relay in the direct current motor electric push rod due to the fact that the direct current motor mechanical commutator, the limit position stop limit switch and the relay for controlling the extension and retraction of the direct current motor electric push rod can generate electric sparks, mechanical abrasion and fatigue damage of a mechanical spring caused by forced current cut-off. In addition, during the linear reciprocating positioning movement, an additional position sensor is required to be arranged at the end part of the electric push rod.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model provides an electric putter based on take position sensor's brushless DC motor of permanent magnetism has solved among DC motor's the electric putter DC motor mechanical type commutator, extreme position stop limit switch and control DC motor's electric putter and has stretched out and the problem that the indented relay has the life-span short, the fault rate is high. In addition, the problems of contact arc damage and fatigue damage of a mechanical spring caused by electric spark and mechanical abrasion of a commutator and forced current shutoff of a relay and contact arc damage and fatigue damage of a limit position stop limit switch are solved.
The technical scheme of the utility model is that: an electric putter based on a permanent magnet brushless dc motor with a position sensor, comprising:
a brushless DC motor;
the transmission mechanism is arranged as a planetary gear set;
a threaded push rod with a self-locking function;
the integrated controller is used for controlling the brushless direct current motor and serial communication or parallel control signals, the integrated controller is installed at the front end of the brushless direct current motor, the integrated controller controls the forward rotation or the reverse rotation of the brushless direct current motor by connecting electric signals, serial communication signals or parallel control signals, and the brushless direct current motor controls the extension or retraction of the threaded push rod through a driving transmission mechanism.
Preferably, a position sensor is arranged inside the brushless direct current motor, the position sensor can transmit a position signal of the brushless direct current motor to the integrated controller, and the integrated controller controls the telescopic position of the threaded push rod and accurately controls the limit position of the threaded push rod according to the position signal.
Preferably, the brushless dc motor includes a housing, a stator assembly and a rotor assembly, the rotor assembly is rotatably disposed inside the stator assembly, the integrated controller is mounted at a front end of the stator assembly, and the integrated controller is provided with a communication interface.
Preferably, the serial communication signal is set as a CAN or RS485 functional signal, and the parallel communication signal is set as an I/O functional signal.
Preferably, stator module includes stator core, stator core inside evenly is provided with a plurality of motor winding coil, the terminal surface that stator core was kept away from to the motor winding coil sets up arc, the motor winding coil is provided with the rectangle and detains and the circle is detained.
Preferably, the rotor subassembly includes the axle, the cover is located epaxial rotor core and evenly install a plurality of magnet steel on rotor core surface, the N/S utmost point between two adjacent magnet steel is installed in turn.
Preferably, rotor core sets up to circular, and rotor core's side evenly distributed has a plurality of hole of stepping down, and rotor core's center is provided with the shaft hole, and rotor core's outer terminal surface evenly is provided with a plurality of location arch along rotor core's axis direction.
Preferably, a contact type limit switch is further installed in the sleeve of the threaded push rod.
The utility model has the beneficial technical effects that:
on the one hand, the brushless direct current motor and the controller replace a direct current power supply polarity reversing control relay to automatically realize the extension or retraction control of the linear motion of the electric push rod, in addition, the extension and retraction limit position stop protection control of the electric push rod can be realized according to the position signal of the rotor, the control of the electric push rod without all electronic mechanical contacts is realized, the problems of carbon brush, mechanical abrasion of the relay and a limit position switch and electric arc contact burning of the electric push rod of the brush direct current motor are fundamentally solved, the generation of electric sparks and electric arcs is further eliminated, and the reliability and the service life of the electric push rod are greatly improved.
On the other hand, signals are transmitted to a controller according to a position sensor arranged on a permanent magnet brushless direct current motor rotor, and the limit position protection control of the electric push rod is realized by matching with a transmission piece;
on one hand, the initial position of the linear motion of the electric push rod is set and adjusted through the bus software of the CAN or the RS485, in addition, the running current and the torque of the motor CAN be reported through the bus of the CAN or the RS485, the fault early warning and the implementation data report of the electric push rod are carried out, and the intelligent control of the walking speed and the walking distance of the electric push rod CAN be realized through the CAN or the RS485 and a single chip microcomputer or a microprocessor of the brushless direct current motor.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention;
fig. 2 is an exploded view of the structure of the brushless dc motor of the present invention;
fig. 3 is a schematic structural view of the stator core of the present invention;
fig. 4 is a schematic view of the rotor assembly structure of the present invention;
fig. 5 is a schematic structural view of a rotor core according to the present invention;
FIG. 6 (a) is a schematic circuit diagram of I/O function signals in the integrated controller of the present invention;
fig. 6 (b) is a schematic circuit diagram of the CAN function signal in the integrated controller according to the present invention;
fig. 6 (c) is a schematic circuit diagram of an RS485 function signal in the integrated controller of the present invention;
FIG. 7 (a) is a block diagram of the I/O function signal system of the overall structure of the present invention;
fig. 7 (b) is a block diagram of a CAN function signal system of the overall structure of the present invention;
fig. 7 (c) is a block diagram of the RS485 function signal system with the overall structure of the present invention.
The reference signs are:
100. a brushless DC motor; 101. a stator assembly; 102. a rotor assembly; 103. a housing; 104. an integrated controller; 105. a stator core; 106. a motor winding coil; 107. a rectangular buckle; 108. round buttons; 109. a shaft; 110. a rotor core; 111. magnetic steel; 112. a hole of abdication; 113. a shaft hole; 114. positioning the projection; 200. a transmission member; 300. a threaded push rod.
Detailed Description
In order to make the technical means of the present invention clearer and to make the invention practical in accordance with the content of the specification, the following embodiments are described in further detail with reference to the accompanying drawings and examples, and the following examples are used to illustrate the present invention but do not limit the scope of the present invention.
The utility model particularly relates to an electric putter based on take position sensor's brushless DC motor of permanent magnetism, include:
a power source;
a brushless dc motor 100;
the transmission mechanism 200, the transmission mechanism 200 is arranged as a planetary gear set;
a threaded push rod 300 with a self-locking function;
an integrated controller 104 for controlling the brushless dc motor 100 and serial communication or parallel control signals, wherein the integrated controller 104 is installed at the front end of the brushless dc motor 100, the integrated controller 104 controls the forward rotation or reverse rotation of the brushless dc motor 100 by connecting electrical signals, serial communication signals or parallel control signals, and the brushless dc motor 100 controls the extension or retraction of the threaded push rod 300 by driving the transmission mechanism 200.
It should be further noted that the brushless dc motor 100 includes a housing 103, a stator assembly 101 and a rotor assembly 102, the rotor assembly 102 is rotatably disposed inside the stator assembly 101, the integrated controller 104 is mounted at a front end of the stator assembly 101, and the integrated controller 104 is provided with a communication interface.
Further, as shown in fig. 6 (a), 6 (b), 6 (c), 7 (a), 7 (b) and 7 (c), a position sensor capable of transmitting a position signal of the brushless dc motor 100 to the integrated controller 104 is further provided inside the brushless dc motor 100, and the integrated controller 104 controls the extending and retracting position of the screw pusher 300 and accurately controls the limit position of the screw pusher 300 according to the position signal.
In addition, the protection control of the extension and retraction limit positions of the threaded push rod 300 can be realized according to the position signal of the rotor assembly 102, the control of the threaded push rod 300 without an all-electronic mechanical contact is realized, the problems of mechanical abrasion of a carbon brush, a relay and a contact position switch and electric arc contact burn existing in the threaded push rod 300 of the brushed direct current motor are fundamentally solved, the generation of electric sparks and electric arcs is eliminated, and the reliability and the service life of the threaded push rod 300 are greatly improved.
Further, referring to fig. 6 (a), 6 (b) and 6 (c), the serial communication signal is set as a CAN or RS485 function signal, and the parallel control signal is set as an I/O function signal. The starting position of the linear motion of the threaded push rod 300 is set and adjusted through the bus software of the CAN or RS485, in addition, the running current and the torque of the motor CAN be reported through the bus of the CAN or RS485, fault early warning and implementation data reporting of the threaded push rod 300 are carried out, and in addition, intelligent control of the walking speed and the walking distance of the threaded push rod 300 is realized through the CAN or RS485 and a single chip microcomputer or a microprocessor of the brushless direct current motor 100.
Further, as shown in fig. 2, 3 and 4, the stator assembly 101 includes a stator core 105, a plurality of coil winding rods 106 are uniformly disposed inside the stator core 105, an end surface of the coil winding rod 106, which is far away from the stator core 105, is arc-shaped, and the coil winding rod 106 is provided with a rectangular buckle 107 and a circular buckle 108.
Wherein the shape of the stator core 105 is set to be circular;
defining the diameter of the inner ring of the stator core 105 as A, the diameter of the outer ring of the stator core 105 is 1.06A, the diameter of the end face of the coil winding rod 106 is 0.64A, and the diameter of the round buckle 108 is 0.01A;
defining the width of the rectangular button 107 as B, the length of the rectangular button 107 is 3B, and the width of the coil winding bar 106 is 4B.
Further, as shown in fig. 4 and 5, the rotor assembly 102 includes a shaft 109, a rotor core 110 sleeved on the shaft 109, and a plurality of magnetic steels 111 uniformly installed on the surface of the rotor core 110, wherein N/S poles between two adjacent magnetic steels 111 are alternately installed.
The rotor core 110 is circular, a plurality of abdicating holes 112 are uniformly distributed on the side surface of the rotor core 110, a shaft hole 113 is formed in the center of the rotor core 110, and a plurality of positioning protrusions 114 are uniformly arranged on the outer end surface of the rotor core 110 along the axial direction of the rotor core 110;
the diameter of the outer ring of the rotor core 110 is 0.51A, the diameter of the outer end of the abdicating hole 112 is 0.43A, the diameter of the inner end of the abdicating hole 112 is 0.22A, and the diameter of the shaft 109 is 0.09A;
the length of the shaft 109 is 200B, the length of the magnetic steel 111 is 67.5B, the length of the rotor core 110 is 62.5B, and the distance between the outer end surface vertexes of the two opposite magnetic steels 111 is 52.23B.
Further, A is defined to have a value of 32.9 to 34.9mm and B is defined to have a value of 0.2 to 0.5mm.
It should be noted that, a contact limit switch is further installed in the sleeve of the threaded push rod 300, and the contact limit switch is configured to protect the threaded push rod 300 from only allowing to move to a limit position, so as to protect a mechanical end cover of the threaded push rod 300.
The utility model discloses a when using, threaded push rod 300 control signal passes through communication interface and transmits to controller 104, and controller 104 control tape position sensor's brushless DC motor 100 rotates, and the extreme position protection control of threaded push rod 300 is realized to the gear reduction ratio of brushless DC motor 100 rotor position sensor cooperation drive mechanism 200.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (8)
1. The utility model provides an electric putter based on take position sensor's permanent magnetism brushless DC motor which characterized in that includes:
a brushless DC motor;
the transmission mechanism is arranged as a planetary gear set;
a threaded push rod with a self-locking function;
the integrated controller is used for controlling the brushless direct current motor and serial communication or parallel control signals, the integrated controller is installed at the front end of the brushless direct current motor, the integrated controller controls the forward rotation or the reverse rotation of the brushless direct current motor by connecting electric signals, serial communication signals or parallel control signals, and the brushless direct current motor controls the extension or retraction of the threaded push rod through a driving transmission mechanism.
2. The electric push rod based on the permanent magnet brushless direct current motor with the position sensor according to claim 1, is characterized in that: the position sensor is arranged in the brushless direct current motor and can transmit position signals of the brushless direct current motor to the integrated controller, and the integrated controller controls the telescopic position of the threaded push rod and accurately controls the limit position of the threaded push rod according to the position signals.
3. The electric push rod based on the permanent magnet brushless direct current motor with the position sensor according to claim 1, is characterized in that: the brushless direct current motor comprises a shell, a stator assembly and a rotor assembly, wherein the rotor assembly is rotatably arranged in the stator assembly, the integrated controller is installed at the front end of the stator assembly, and the integrated controller is provided with a communication interface.
4. The electric push rod based on the permanent magnet brushless direct current motor with the position sensor according to claim 3, characterized in that: the serial communication signal is set as a CAN or RS485 functional signal, and the parallel control signal is set as an I/O functional signal.
5. The electric push rod based on the permanent magnet brushless direct current motor with the position sensor according to claim 3, characterized in that: stator module includes stator core, stator core inside evenly is provided with a plurality of motor winding coil, the terminal surface that stator core was kept away from to the motor winding coil sets up arc, the motor winding coil is provided with the rectangle and detains and the circle is detained.
6. The electric push rod based on the permanent magnet brushless direct current motor with the position sensor according to claim 3, characterized in that: the rotor assembly comprises a shaft, a rotor core sleeved on the shaft and a plurality of magnetic steels uniformly arranged on the surface of the rotor core, wherein N/S poles between every two adjacent magnetic steels are alternately arranged.
7. The electric push rod based on the permanent magnet brushless direct current motor with the position sensor according to claim 6, is characterized in that: rotor core sets up to circular, and rotor core's side evenly distributed has a plurality of hole of stepping down, and rotor core's center is provided with the shaft hole, and rotor core's outer terminal surface evenly is provided with a plurality of location arch along rotor core's axis direction.
8. The electric push rod based on the permanent magnet brushless direct current motor with the position sensor according to claim 1, characterized in that: and a contact type limit switch is also arranged in the sleeve of the threaded push rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222839674.3U CN218771656U (en) | 2022-10-27 | 2022-10-27 | Electric push rod based on permanent magnet brushless direct current motor with position sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222839674.3U CN218771656U (en) | 2022-10-27 | 2022-10-27 | Electric push rod based on permanent magnet brushless direct current motor with position sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218771656U true CN218771656U (en) | 2023-03-28 |
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ID=85703088
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222839674.3U Active CN218771656U (en) | 2022-10-27 | 2022-10-27 | Electric push rod based on permanent magnet brushless direct current motor with position sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218771656U (en) |
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2022
- 2022-10-27 CN CN202222839674.3U patent/CN218771656U/en active Active
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