CN116191361A - High-efficient main shaft servo motor that possesses overload prevention function - Google Patents

Abstract

The invention discloses a high-efficiency spindle servo motor with an overload prevention function, relates to the technical field of spindle servo motors, and comprises a motor body and a junction box arranged on the top of the motor body. There is a drive shaft at one end; a conductive seat is provided on one side of the junction box, and an overload protector electrically connected to the conductive seat is provided on the other side of the junction box, and a terminal seat is provided at the front end of the other side inside the junction box. A protection mechanism is provided; the present invention cooperates with the overload protector, the protection mechanism and the transmission shaft, so that the power supply of the motor body can be automatically tripped and disconnected when the external power supply voltage is too large, and can effectively avoid the occurrence of accidents caused by When the voltage is too high, the motor body is overloaded, and the higher voltage current connected to the motor body can be load-shared, effectively improving the overload protection effect of the motor body during use, and prolonging the service life of the motor.

Description

A high-efficiency spindle servo motor with overload prevention function

technical field

The invention relates to the technical field of spindle servo motors, in particular to a high-efficiency spindle servo motor with an overload prevention function.

Background technique

The motor is a kind of electromechanical product that converts electrical energy into rotational mechanical energy. When the motor is in use, it is generally in a normal working state. Sometimes when the motor is overloaded, the reasons for the overload of the motor are as follows: For example, when the motor voltage is too high, the motor When there is excessive torque on the shaft, when the load is too heavy, etc., especially when the high-efficiency spindle servo motor is overloaded with voltage, it will not only cause damage to the electrical components inside the junction box, but also cause damage to the circuit inside the motor body; at the same time When the servo motor suddenly stops power supply, the motor shaft in its rotating state will also stop immediately, but the connected rotating object does not stop immediately, resulting in a heavy object that is still rotating and will cause a greater impact on the locked motor shaft. Torque, and then the motor shaft overload occurs; resulting in damage to the rotor connected to the motor shaft, affecting the normal operation of the motor when restarting, and shortening the service life of the motor; therefore, the above problems need to be improved. .

Contents of the invention

The object of the present invention is to solve the shortcomings in the prior art, and propose a high-efficiency spindle servo motor with overload prevention function.

In order to achieve the above object, the present invention adopts the following technical solution: a high-efficiency spindle servo motor with overload prevention function, including a motor body and a junction box arranged on the top of the motor body, the driving end of the motor body is installed with a fixing seat, The outer end surface of the fixed seat is horizontally rotated and provided with a transmission shaft; one side of the junction box is equidistantly connected with a plurality of stuffing boxes on the outer wall, and a conductive seat is provided on one side of the interior of the junction box. One end of the top is equipped with a terminal, and the other side inside the junction box is provided with an overload protector electrically connected to the conductive seat, and the front end of the other side inside the junction box is provided with a terminal block. The circuit connection; the inside of the fixed seat is provided with an installation cavity, and the inside of the installation cavity is provided with a protection mechanism for overload protection between the motor shaft and the transmission shaft.

Preferably, the protective mechanism includes a connecting seat fixedly sleeved on the motor shaft of the motor body, a stable seat fixedly installed on the inner wall of the outer end of the installation cavity, a circular opening opened in the middle of the inner end surface of the stable seat, and a circular opening slidably arranged on the circular The moving ring plate inside the shape mouth and the rotating ring movable in the inner ring of the moving ring plate, the inner ring of the rotating ring is horizontally rotated with a spline shaft, and the inside of the outer side of the stable seat is provided with an annular cavity, so A repulsion component for moving the ring plate is provided inside the annular cavity; a connecting platform protrudes from the outer end surface of the connecting seat, and a spline groove is opened in the middle of the connecting platform, and the inner end of the spline shaft is plugged into into the interior of the spline groove; the inner end of the transmission shaft movably extends into the interior of the circular opening, and the inner end surface of the transmission shaft is provided with a spline hole groove matching the spline shaft.

Preferably, both ends of the circular mouth are wide-mouthed, and the connecting platform is plugged into the wide mouth of the outer end of the circular mouth, and is rotatably connected to the stable seat through a bearing ring; the moving ring plate and the rotating ring There is a transmission sleeve rotating between them. One end of the transmission sleeve is a neck-shaped tubular structure. An annular groove is opened outside the inner end surface of the connecting platform, and a plurality of limit bar grooves are opened on the inner wall of the annular groove. ; The outer wall of the narrowing end of the transmission sleeve is equidistantly protruded with a plurality of limit bars inserted into the limit bar groove; the wide neck end of the drive sleeve is sleeved on the inner end outer wall of the transmission shaft, and The outer wall of the inner end of the transmission shaft is equidistantly protruded with a plurality of clamping strips, and the inner wall of the wide neck end of the transmission sleeve is equidistantly provided with a plurality of clamping grooves for matching with the clamping strips.

Preferably, the repulsive force assembly includes an electromagnet ring fixed on the inner wall of one side of the annular cavity, a magnet ring that is vertically movable against the inside of the annular cavity inside the electromagnet ring, and equidistant and laterally fixed on the other side of the annular cavity. The stabilizing bar at the upper and lower ends of the side inner wall and a plurality of thrust springs arranged on the other side of the magnet ring; the magnetic poles on the opposite side of the electromagnet ring and the magnet ring are the same; fixed connection; the inner ring wall of the magnet ring is fixedly connected with connecting rods, and the inner wall of the middle part of the circular opening is equidistantly provided with a plurality of rectangular bars communicating with the annular cavity. The end extends from the rectangular bar mouth into the circular mouth and is fixedly connected with the outer wall of the movable ring plate.

Preferably, a power transmission line is provided at the power connection end of the electromagnet ring, and the outer end of the power transmission line is electrically connected with the power connection terminal of the overload protector.

Preferably, a limiting ring plate is vertically provided on one side of the inner wall of the necking section in the middle of the circular mouth, and a plurality of guide rods are equidistantly arranged on the outer end surface of the limiting ring plate, and the guide rods move through Move the ring plate.

Compared with the prior art, the beneficial effect of the present invention is: the present invention cooperates with the overload protector, the protection mechanism and the transmission shaft, so that the power supply of the motor body can be automatically tripped and disconnected when the external power supply voltage is too large. The function of opening can effectively avoid the overload of the motor body due to excessive voltage, and it can automatically switch between the suddenly self-locking motor shaft and the external rotating object after the motor body suddenly loses power. Disconnect the transmission, and can share the higher voltage current connected to the motor body, so as to avoid the damage of the electrical components inside the junction box caused by the voltage change of the motor body after power-off; effectively improve the The motor body has an overload protection effect during use and can prolong the service life of the motor.

Description of drawings

The accompanying drawings described here are used to provide a further understanding of the present invention and constitute a part of the application. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations to the present invention. In the attached picture:

Fig. 1 is the front view structure schematic diagram of the present invention;

Fig. 2 is the top view structure schematic diagram of the present invention;

Fig. 3 is a top sectional view of the junction box of the present invention;

Fig. 4 is a top sectional view of the junction box and the fixing seat of the present invention;

Fig. 5 is a cross-sectional view of the top structure of the socket and the stable seat of the present invention;

Serial numbers in the figure: 1. Motor body; 2. Junction box; 3. Stuffing box; 4. Fixed seat; 5. Drive shaft; 6. Conductive seat; 7. Terminal block; 8. Overload protector; 10. Wiring seat; 11. Connecting seat; 12. Stable seat; 13. Moving ring plate; 14. Rotating ring; 15. Spline shaft; 16. Electromagnet ring; 17. Magnet ring; 18. Transmission sleeve; 19. Thrust spring; 20, stabilizer bar.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention.

Embodiment: Referring to Fig. 1 to Fig. 5, a high-efficiency spindle servo motor with overload prevention function includes a motor body 1 and a junction box 2 arranged on the top of the motor body 1, and a fixing seat 4 is installed on the driving end of the motor body 1, The outer end surface of the fixed seat 4 is horizontally rotated and provided with a transmission shaft 5; the outer wall of one side of the junction box 2 is equidistantly connected with a plurality of stuffing boxes 3, and the inner side of the junction box 2 is provided with a conductive seat 6, and the top of the conductive seat 6 One end is equipped with a terminal 7, the other side inside the junction box 2 is provided with an overload protector 8 electrically connected to the conductive seat 6, and the other side inside the junction box 2 is provided with a terminal block 10 at the front end, and the terminal block 10 is connected to the motor body 1 Internal circuit connection; the inside of the fixed seat 4 is provided with an installation cavity, and the inside of the installation cavity is provided with a protection mechanism for overload protection between the motor shaft and the transmission shaft 5; through the cooperation of the overload protector 8 with the protection mechanism and the transmission shaft 5, it is convenient When the external power supply voltage is too large, it can automatically trip and disconnect the power supply of the motor body 1, which can effectively avoid the overload of the motor body 1 due to excessive voltage, and can be used when the motor body 1 is suddenly disconnected. After power-on, the transmission is automatically disconnected between the suddenly self-locking motor shaft and the external rotating object, and the high-voltage current connected to the motor body 1 can be load-shared, which is convenient to avoid When the electric components inside the junction box 2 are damaged due to the voltage fluctuation of the motor body 1 after power failure, the overload protection effect of the motor body 1 during use is effectively improved, and the service life of the motor can be extended.

In the present invention, the protective mechanism includes a connecting seat 11 fixedly sleeved on the motor shaft of the motor body 1, a stable seat 12 fixedly mounted on the inner wall of the outer end of the installation cavity, a circular opening in the middle of the inner end surface of the stable seat 12, Slide the moving ring plate 13 that is located inside the circular mouth and the rotating ring 14 that is movably located in the inner ring of the moving ring plate 13, and the inner ring of the rotating ring 14 is horizontally rotated and provided with a spline shaft 15, and the inside of the stable seat 12 outside An annular cavity is provided, and a repulsive component for moving the ring plate 13 is arranged inside the annular cavity; a connecting platform protrudes from the outer end surface of the connecting seat 11, and a spline groove is opened in the middle of the connecting platform, and the inner end of the spline shaft 15 is inserted connected to the interior of the spline groove; the inner end of the transmission shaft 5 extends into the interior of the circular opening, and the inner end surface of the transmission shaft 5 is provided with a spline hole groove that matches the spline shaft 15; the necking section in the middle of the circular opening One side inner wall is vertically provided with a limit ring plate, and a plurality of guide rods are equidistantly arranged on the outer end surface of the limit ring plate, and the guide rods move through the movable ring plate 13 .

In the present invention, both ends of the circular mouth are wide-mouthed, and the connecting platform is plugged into the wide-mouthed interior of the outer end of the circular mouth, and is rotatably connected with the stable seat 12 through the bearing ring; There is a transmission sleeve 18 for rotation between them. One end of the transmission sleeve 18 is a neck-shaped tubular structure. An annular groove is opened outside the inner end surface of the connecting platform, and a plurality of limit bar grooves are opened on the inner wall of the annular groove; The equidistant protrusions on the outer wall of the neck end have a plurality of limit bars that are plugged into the limit bar groove; The upper equidistant protrusion has a plurality of clamping strips, and the inner wall circumference of the wide neck end of the transmission sleeve 18 is equidistantly provided with a plurality of clamping grooves that cooperate with the clamping strips; The transmission shaft 5 plays the role of enhancing the torque force during transmission; and improves the connection strength between the motor shaft and the transmission shaft 5 during the transmission connection and the anti-overload effect of the motor shaft.

In the present invention, the repulsion component includes an electromagnet ring 16 fixed on the inner wall of one side of the annular cavity, a magnet ring 17 that is vertically movable against the inside of the annular cavity inside the electromagnet ring 16, and equidistant and laterally fixed on the annular cavity. The stabilizing bar 20 on the upper and lower ends of the inner wall on the other side of the cavity and a plurality of thrust springs 19 located on the other side of the magnet ring 17; There is a transmission line 9, the outer end of the transmission line 9 is electrically connected to the electrical terminal of the overload protector 8; the outer end of the thrust spring 19 is fixedly connected to the inner wall of the other side of the annular cavity; A connecting rod is fixedly connected, and the circumference of the inner wall of the middle part of the circular mouth is equidistantly provided with a plurality of rectangular bars communicating with the annular cavity. Fixed connection; through the setting of the thrust spring 19, when the electromagnet ring 16 is not energized, the magnet ring 17 is pushed to automatically return, and then the moving ring plate 13 is driven to drive the drive sleeve 18 and the spline shaft 15 to reset and move, so that the motor When the main body 1 is started next time, the transmission shaft 5 is driven to rotate by the back-moving transmission sleeve 18 and the spline shaft 15 .

Working principle: In this embodiment, the present invention also proposes a method for using a high-efficiency spindle servo motor with an overload prevention function, which includes the following steps:

Step 1, first install the conductive seat 6, the connecting terminal 7, the overload protector 8 and the power line 9 on the junction box 2, and pass the external wire from the inside of the stuffing box 3 into the inside of the junction box 2, and make the external wire and Connecting terminal 7 is fixedly electrically connected, then the fixed seat 4 with transmission shaft 5 and protective structure is installed on the drive end of motor body 1, and the connecting seat 11 in the protective mechanism is fixedly connected with the motor shaft of motor body 1; When the motor body 1 rotates, it can drive the motor shaft to drive the connecting seat 11 to rotate, and the rotation of the connecting seat 11 can drive the spline shaft 15 to rotate, and the rotation of the spline shaft 15 is convenient to drive the transmission shaft 5 to rotate, and then drive the transmission shaft 5 The object to be transmitted rotates; by setting the transmission sleeve 18, the torque force can be enhanced when the spline shaft 15 transmits the transmission shaft 5; and the connection between the motor shaft and the transmission shaft 5 during transmission connection is improved. Strength and anti-overload effect of the motor shaft;

Step 2, if the external current supplied to the motor body 1 is too large, the overload protector 8 inside the junction box 2 will trip, thereby protecting the circuit inside the motor body 1 from voltage overload. After the power supply inside the motor body 1 is stopped, the rotor of the motor at this time will stop rotating rapidly;

Step 3: After the power supply to the motor body 1 is stopped, the external wires are still electrically connected to the electrical components inside the junction box 2. In order to avoid leakage and fire due to excessive voltage, the tripped circuit breaker at this time The overload protector 8 will not supply power to the motor body 1. At this time, the power line 9 electrically connected to the electrical terminal of the overload protector 8 will supply the high-voltage electric current to the electromagnet ring 16. At this time, the energized electromagnet The ring 16 can quickly generate the same magnetic field as the magnet ring 17, because the magnetic pole of the electromagnet ring 16 is the same as that of the magnet ring 17 after energization, and then the magnet ring 17 can be pushed into the other end of the ring cavity;

Step 4, the moving ring plate 13 is facilitated by the connecting rod to drive the moving ring plate 13 to move toward the transmission shaft 5 in the circular opening, and the movement of the moving ring plate 13 facilitates the one end of the spline shaft 15 to withdraw from the spline groove of the connecting seat 11 In addition, the transmission between the transmission shaft 5 and the motor shaft is disconnected, so that when the object in the rotating state drives the transmission shaft 5, it will not drive the motor shaft in the self-locking state of sudden power failure to rotate, thereby preventing the motor from The motor shaft of the main body 1 is damaged due to the large load of the shaft body and the large torque that occurs during emergency stop.

The above is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto, any person familiar with the technical field within the technical scope disclosed in the present invention, according to the technical solution of the present invention Any equivalent replacement or change of the inventive concepts thereof shall fall within the protection scope of the present invention.

Claims (6)

1. A high-efficiency spindle servo motor with anti-overload function, comprising a motor body (1) and a junction box (2) located on the top of the motor body (1), characterized in that: the drive end of the motor body (1) A fixed seat (4) is installed, and the outer end surface of the fixed seat (4) is horizontally rotated to be provided with a transmission shaft (5); one side of the junction box (2) is equidistantly connected with a plurality of stuffing boxes ( 3), the inner side of the junction box (2) is provided with a conductive seat (6), the top end of the conductive seat (6) is equipped with a terminal (7), and the other inside the junction box (2) An overload protector (8) electrically connected to the conductive seat (6) is provided on one side, and a terminal block (10) is provided at the front end of the other side inside the junction box (2), and the terminal block (10) is connected to the motor body ( 1) Internal circuit connection; the fixed seat (4) is provided with an installation cavity inside, and a protection mechanism for overload protection between the motor shaft and the transmission shaft (5) is provided inside the installation cavity. 2. A high-efficiency spindle servo motor with overload prevention function according to claim 1, characterized in that: the protection mechanism includes a connecting seat (11) fixedly sleeved on the motor shaft of the motor body (1), a fixed The stable seat (12) installed on the inner wall of the outer end of the installation cavity, the circular opening in the middle of the inner end surface of the stable seat (12), the moving ring plate (13) slidingly arranged inside the circular opening and the movable ring on the moving ring The rotating ring (14) in the inner ring of the plate (13), the inner ring of the rotating ring (14) is provided with a spline shaft (15) for lateral rotation, and the inside of the outer side of the stable seat (12) is provided with an annular cavity , the interior of the annular cavity is provided with a repulsive component for moving the ring plate (13); the outer end surface of the connecting seat (11) protrudes with a connecting platform, and the middle part of the connecting platform is provided with a spline groove, and the The inner end of the spline shaft (15) is plugged into the spline groove; the inner end of the transmission shaft (5) is movably extended into the circular opening, and the inner end surface of the transmission shaft (5) is provided with a spline The spline hole groove that key shaft (15) cooperates. 3. A high-efficiency spindle servo motor with anti-overload function according to claim 1, characterized in that: both ends of the circular port are wide-mouthed, and the connecting table is plugged into the outer end of the circular port. Wide-mouthed inside, and is rotatably connected with the stable seat (12) through the bearing ring; a transmission sleeve (18) is provided for rotation between the moving ring plate (13) and the rotating ring (14), and the transmission sleeve (18) One end is a neck-shaped tubular structure, and an annular groove is opened on the outside of the inner end surface of the connecting platform, and a plurality of limit bar grooves are opened on the inner wall of the annular groove; the outer wall of the necked end of the transmission sleeve (18) The equidistant projections have a plurality of limit bars that are plugged into the limit bar groove; the wide neck end of the drive sleeve (18) is sleeved on the inner end outer wall of the drive shaft (5), and the drive shaft (5) The outer wall of the inner end is equidistantly protruded with a plurality of snap-in strips, and the inner wall circumference of the wide neck end of the transmission sleeve (18) is equidistantly provided with a plurality of snap-in grooves that cooperate with the snap-in bars. 4. A kind of high-efficiency spindle servo motor with anti-overload function according to claim 3, characterized in that: the repulsion assembly includes an electromagnet ring (16) fixed on the inner wall of the inner side of the annular cavity, a vertical The magnet ring (17) that is movable against the inner side of the electromagnet ring (16) annular cavity, the stabilizer bar (20) that is fixed on the upper and lower ends of the inner wall on the other side of the annular cavity and is located at the other side of the magnet ring (17) A plurality of thrust springs (19) on the side; the magnetic poles of the opposite surface of the electromagnet ring (16) and the magnet ring (17) are the same; connected; the inner ring wall of the magnet ring (17) is fixedly connected with connecting rods, and the peripheral side of the inner wall of the middle part of the circular opening is equidistantly provided with a plurality of rectangular bars communicating with the annular cavity, and the connecting rods The inner end extends from the rectangular bar mouth into the circular mouth and is affixed to the outer wall of the movable ring plate (13). 5. A kind of high-efficiency spindle servo motor with anti-overload function according to claim 1, characterized in that: the power connection end of the electromagnet ring (16) is provided with a transmission line (9), and the transmission line ( The outer end of 9) is electrically connected with the electrical terminal of the overload protector (8). 6. A high-efficiency spindle servo motor with anti-overload function according to claim 2, characterized in that: a limiting ring plate is vertically provided on one side of the inner wall of the necking section in the middle of the circular mouth, and the limiting ring plate A plurality of guide rods are equidistantly arranged on the outer end surface of the bit ring plate, and the guide rods move through the moving ring plate (13).

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