Permanent magnet synchronous motor group control mechanism with high safety performance

Abstract

The invention relates to the technical field of energy-saving motors, in particular to a permanent magnet synchronous motor group control mechanism with high safety performance, which comprises a permanent magnet synchronous motor main body, a cable main body and a group control mechanism main body, and is characterized in that a second junction box is fixedly mounted on the outer wall of the group control mechanism main body, and a fixed outer plate is fixedly connected to the outer wall of the second junction box; the outer wall of the fixed outer plate is fixedly connected with a fixed block, the inner wall of the fixed block is in threaded connection with a second fixed bolt, and one end of the second fixed bolt is rotationally connected with a movable frame; the cable clamping device has the beneficial effects that the first clamping plates on the left side and the right side move upwards and downwards, so that a clamped cable main body is rubbed up and down, the cable main body on the left side is rubbed upwards, and the cable main body on the right side is rubbed downwards; the friction force between the cable main body rubbed by the first clamping plate and the first clamping plate and the second clamping plate is further increased, so that the cable main body is clamped more firmly.

Description

Technical Field

[0001] This invention relates to the field of energy-saving electric motor technology, specifically to a high-safety-performance permanent magnet synchronous motor control mechanism. Background Technology

[0002] Energy-saving motors are a type of energy-saving motor represented by permanent magnet synchronous motors. As industrial automation moves towards a new era of green and intelligent manufacturing, energy saving of single equipment can no longer meet the needs of systemic consumption reduction. The deep integration of energy-saving motors and permanent magnet synchronous motor control mechanisms allows one control mechanism to control multiple permanent magnet synchronous motors simultaneously.

[0003] Currently available permanent magnet synchronous motor control mechanisms typically require multiple motors to be connected to the control mechanism's junction box. This junction box contains several motor connections, with each motor's main line containing three or more cables. The outer sheath of the main line must be stripped before the internal thin cables can be connected to the junction box. During operation, the motor vibrates significantly, easily pulling the individual cables connected to the junction box off. Furthermore, the multiple cables vibrate synchronously under motor vibration, reducing the gaps between them. Over long-term operation, the cables generate heat, leading to heat accumulation and potential safety hazards. Therefore, a new permanent magnet synchronous motor control mechanism is needed to address these issues. Summary of the Invention

[0004] This invention provides a high-safety permanent magnet synchronous motor control mechanism with multiple safeguards to prevent contact point detachment and increased heat dissipation space between adjacent cables. It solves the problems mentioned in the background art, such as the motor vibrating significantly during operation, easily pulling off the connection point of a single thin cable connected to the junction box, and multiple cables vibrating synchronously during motor operation, resulting in small gaps between cables and potential safety hazards due to mutual overheating during long-term operation. To achieve the above objectives, the present invention provides the following technical solution: a high-safety permanent magnet synchronous motor control mechanism, comprising a permanent magnet synchronous motor body, a cable body, and a control mechanism body. A second junction box is fixedly installed on the outer wall of the control mechanism body. A fixed outer plate is fixedly connected to the outer wall of the second junction box. A fixed block is fixedly connected to the outer wall of the fixed outer plate. A second fixing bolt is threadedly connected to the inner wall of the fixing block. A movable frame is rotatably connected to one end of the second fixing bolt. A first sliding groove is provided on the movable frame. Two movable frames are slidably installed on the inner wall of the first sliding groove. A second clamping plate is fixedly connected to the movable frame. A first clamping plate is slidably connected to the inner wall of the movable frame. Both the first clamping plate and the second clamping plate have threaded grooves for clamping the cable body.

[0005] Preferably, the inner wall of the first slide groove is provided with a second slide groove, and two first sliders are slidably installed on the inner wall of the second slide groove. A first guide rod is fixedly connected to the outer wall of the first slider, and a first ball bearing is rotatably installed at one end of the first guide rod.

[0006] Preferably, the fixed outer plate has two first track grooves, the first track grooves are inclined, and the first ball is slidably connected to the inner wall of the first track groove.

[0007] Preferably, a second guide rod is fixedly connected to the outer wall of the first clamping plate, and two third guide rods are fixedly connected to the second guide rod. A second ball bearing is rotatably mounted at the end of the third guide rod.

[0008] Preferably, the inner wall of the movable frame is provided with a second track groove and a third track groove, the second track groove and the third track groove are interconnected, the third track groove is configured as an inclined groove, and the third guide rod and the second ball are slidably connected to the inner wall of the second track groove.

[0009] Preferably, the outer wall of the second junction box has multiple wiring holes, and multiple wire clamping bolts are threaded onto the second junction box. One end of each wire clamping bolt is rotatably connected to a wire clamping plate. The outer wall of the wire clamping plate has a corrugated groove, and the wire clamping plate is located inside the wiring holes.

[0010] Preferably, the cable body is provided with multiple cables, and the outer wall of the cable body is covered with an insulating protective sheath.

[0011] Preferably, a first junction box is fixedly installed on the outer wall of the permanent magnet synchronous motor body, a sealing cover is fixedly installed on the outer wall of the first junction box, and multiple wiring terminals are fixedly installed on the first junction box, with the multiple wiring terminals fixedly connected to one end of the cable body.

[0012] Preferably, the outer wall of the permanent magnet synchronous motor body is fixedly connected to a mounting base, and the mounting base is threaded with multiple first fixing bolts.

[0013] Preferably, a control panel is fixedly installed on the main body of the group control mechanism, a knob is rotatably installed on the control panel, and a group control switch is fixedly installed on the control panel.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. In this invention, the end joint of the cable body can share a portion of the tensile force, while a portion of the tensile force is shared by the first clamping plate and the second clamping plate at a distance from the end joint, providing double protection against detachment. As the moving frame moves toward the position of the second junction box, the clamped cable bodies are gradually bent. The bending range is the distance between the front end of the cable body and the clamping of the first clamping plate and the second clamping plate. The bending can further enable the cable body within this range to withstand more tensile and tensioning forces.

[0015] 2. In this invention, the upward and downward movement of the first clamping plates on the left and right sides causes the clamped cable body to be rubbed in the up and down position, so that the cable body on the left side is rubbed upward and the cable body on the right side is rubbed downward. The cable body after being rubbed by the first clamping plates further increases the friction between the cable body and the first clamping plates and the second clamping plates, making it clamped more firmly.

[0016] 3. In this invention, the cable body is placed in the threading groove. The rubbing causes the cable body to be deformed upward or downward, so that the three cable bodies are not on the same plane after rubbing, which increases the distance between the three cable bodies and further increases the heat dissipation distance between them. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention; Figure 2 This is a schematic diagram of the overall side view structure of the present invention; Figure 3 This is a schematic diagram of the main structure of the group control mechanism of the present invention; Figure 4 This is a schematic diagram of the second junction box and its surrounding structure according to the present invention; Figure 5 This is a schematic diagram of the cross-sectional structure of the second junction box and its surrounding area according to the present invention; Figure 6 For the present invention Figure 5 Enlarged structural diagram at point A in the middle; Figure 7 This is a schematic diagram of the second guide rod structure of the present invention; Figure 8 This is a schematic cross-sectional view of the second junction box of the present invention; Figure 9 For the present invention Figure 8 Enlarged structural diagram at point B.

[0018] The attached diagram lists the components represented by each number as follows: 1. Permanent magnet synchronous motor body; 2. Mounting base; 3. First fixing bolt; 4. First junction box; 5. Sealing cover plate; 6. Wiring terminal; 7. Insulating protective sheath; 8. Cable body; 9. Group control mechanism body; 10. Knob; 11. Group control switch; 12. Control panel; 13. Second junction box; 14. Fixed outer plate; 15. Fixing block; 16. Second fixing bolt; 17. Moving frame; 18. Wire pressing bolt; 19. Wire pressing plate; 20. Corrugated groove; 21. Wiring hole; 22. First sliding groove; 23. First guide rod; 24. Second sliding groove; 25. First slider; 26. First ball bearing; 28. Moving frame; 29. ​​First track groove; 30. First clamping plate; 31. Second guide rod; 32. Second clamping plate; 33. Wire threading groove; 34. Third guide rod; 35. Second ball bearing; 36. Second track groove; 37. Third track groove. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] Example 1: This example helps solve the problem of significant vibration during motor operation, which can easily pull apart the connection points of thin cables connected to the junction box. Furthermore, multiple cables can vibrate synchronously during motor operation, resulting in small gaps between cables and potential overheating and safety hazards during long-term operation. Please refer to [link to relevant documentation]. Figure 1 - Figure 9 A high-safety permanent magnet synchronous motor control mechanism includes a permanent magnet synchronous motor body 1, a cable body 8, and a control mechanism body 9. A second junction box 13 is fixedly installed on the outer wall of the control mechanism body 9. A fixed outer plate 14 is fixedly connected to the outer wall of the second junction box 13. A fixed block 15 is fixedly connected to the outer wall of the fixed outer plate 14. A second fixing bolt 16 is threadedly connected to the inner wall of the fixing block 15. A movable frame 17 is rotatably connected to one end of the second fixing bolt 16. A first sliding groove 22 is provided on the movable frame 17. Two movable frames 28 are slidably installed on the inner wall of the first sliding groove 22. A second clamping plate 32 is fixedly connected to the movable frame 28. A first clamping plate 30 is slidably connected to the inner wall of the movable frame 28. Both the first clamping plate 30 and the second clamping plate 32 have wire-passing grooves 33 for clamping the cable body 8.

[0021] The inner wall of the first slide groove 22 is provided with a second slide groove 24. Two first sliders 25 are slidably installed on the inner wall of the second slide groove 24. A first guide rod 23 is fixedly connected to the outer wall of the first slider 25. A first ball bearing 26 is rotatably installed at one end of the first guide rod 23.

[0022] Two first track grooves 29 are provided on the fixed outer plate 14. The first track grooves 29 are inclined and the first ball bearing 26 is slidably connected to the inner wall of the first track groove 29.

[0023] The outer wall of the second junction box 13 has multiple wiring holes 21. Multiple wire pressing bolts 18 are threaded onto the second junction box 13. One end of the wire pressing bolt 18 is rotatably connected to a wire pressing plate 19. The outer wall of the wire pressing plate 19 has a wave groove 20. The wire pressing plate 19 is located inside the wiring holes 21.

[0024] The cable body 8 has multiple cables, and the outer wall of the cable body 8 is covered with an insulating protective sheath 7.

[0025] A first junction box 4 is fixedly installed on the outer wall of the permanent magnet synchronous motor body 1. A sealing cover plate 5 is fixedly installed on the outer wall of the first junction box 4. Multiple wiring terminals 6 are fixedly installed on the first junction box 4. The multiple wiring terminals 6 are fixedly connected to one end of the cable body 8.

[0026] The outer wall of the permanent magnet synchronous motor body 1 is fixedly connected to a mounting base 2, and multiple first fixing bolts 3 are threadedly connected to the mounting base 2.

[0027] A control panel 12 is fixedly installed on the main body 9 of the group control mechanism. A knob 10 is rotatably installed on the control panel 12. A group control switch 11 is fixedly installed on the control panel 12.

[0028] In this embodiment: When using the permanent magnet synchronous motor control mechanism, firstly, the end of the insulating protective sleeve 7 is stripped for a certain length, so that the multiple cable bodies 8 inside the insulating protective sleeve 7 are exposed at the end of the insulating protective sleeve 7. Then, one end of the multiple cable bodies 8 is inserted into the wiring hole 21 on the second junction box 13. Then, the wire clamping bolt 18 is rotated. Through the threaded connection with the second junction box 13, the wire clamping bolt 18 gradually rotates and moves downward into the wiring hole 21. The downward movement of the wire clamping bolt 18 moves the wire clamping plate 19 downward simultaneously, so that the downward movement of the wire clamping plate 19 presses and fixes the end of the cable body 8 in the wiring hole 21. Since the outer wall of the wire clamping plate 19 has a corrugated groove 20, the uneven outer wall of the wire clamping plate 19 can increase the friction when pressing the cable body 8, preventing the end of the cable body 8 from falling out of the wiring hole 21.

[0029] It should be noted that during the above wiring process, the cable body 8 needs to pass between the adjacent first clamping plate 30 and second clamping plate 32. After the wiring is completed, the second fixing bolts 16 on both sides are simultaneously tightened, so that the second fixing bolts 16 rotate and move towards the fixing block 15 through the threaded connection with the fixing block 15. When the second fixing bolts 16 move, the moving frame 17 at the end moves synchronously. When the moving frame 17 moves, it moves the first guide rod 23 synchronously, so that the first guide rod 23 and the first ball bearing 26 at its end slide along the inner wall of the first track groove 29. Since the first track groove 29 is inclined, the first guide rod... When the first ball bearing 23 and the first ball bearing 26 slide along the inner wall of the first track groove 29, they are guided by the inclined direction of the first track groove 29. When the moving frame 17 moves, the two first guide rods 23, along with the first slider 25, slide closer to each other along the inner wall of the second slide groove 24. On the path where the first slider 25 and the first guide rod 23 slide closer to each other, they will abut against the second guide rod 31. This causes the first clamping plate 30 to slide along the inner wall of the moving frame 28 towards the second clamping plate 32 after being abutted and subjected to force, until the wire-passing groove 33 on the outer wall of the first clamping plate 30 and the wire-passing groove 33 on the outer wall of the second clamping plate 32 clamp the cable body 8 therein.

[0030] As the first guide rods 23 and the first sliders 25 on both sides continue to slide closer, the first guide rods 23 continue to push the second guide rods 31 and the first clamping plate 30 towards the second clamping plate 32, causing the moving frame 28 to move along its inner wall under force. At this time, the moving frames 28 on both sides move closer to each other, and finally clamp the cable body 8 in the middle position into the wire-passing grooves 33 of the two second clamping plates 32 and fix it. At this time, the three cable bodies 8 are further clamped and secured by multiple first clamping plates 30 and second clamping plates 32 on the basis of the end clamping. The end joint of the cable body 8 can share some of the tensile force, while the first clamping plate 30 and the second clamping plate 32 share some of the tensile force at a distance from the end joint, providing double protection against falling off. As the moving frame 17 moves toward the second junction box 13, the clamped cable bodies 8 are gradually bent. The bending range is the distance between the front end of the cable body 8 and the distance between the first clamping plate 30 and the second clamping plate 32. The bending can further enable the cable body 8 within this range to withstand more tensile and tensioning forces.

[0031] Example 2: This example addresses the problem of significant vibration during motor operation, which can easily pull apart the connection points of thin cables connected to the junction box. It also addresses the issue of multiple cables vibrating synchronously during motor operation, resulting in small gaps between cables and potential overheating and safety hazards during long-term operation. This example is an improvement upon Example 1. For details, please refer to [link / reference]. Figure 1 - Figure 9 A second guide rod 31 is fixedly connected to the outer wall of the first clamping plate 30. Two third guide rods 34 are fixedly connected to the second guide rod 31. A second ball bearing 35 is rotatably installed at the end of the third guide rod 34.

[0032] The inner wall of the movable frame 28 is provided with a second track groove 36 and a third track groove 37, which are connected to each other. The third track groove 37 is set as an inclined groove, and the third guide rod 34 and the second ball 35 are slidably connected to the inner wall of the second track groove 36.

[0033] In this embodiment: when the second guide rods 31 on both sides are pushed and moved by the first guide rod 23 and the first slider 25, the third guide rod 34 on the outer wall of the second guide rod 31 moves synchronously. At this time, the third guide rod 34 and the second ball 35 slide along the inner wall of the second track groove 36. When they slide to the end of the second track groove 36, the first clamping plate 30 and the second clamping plate 32 have initially clamped and fixed the cable body 8 therein. When the third guide rod 34 and the second ball 35 slide into the third track groove 37 along the second track groove 36, due to the inclined setting of the third track groove 37, the third guide rod 34 is forced to move the second guide rod 31 in the inclined direction of the third track groove 37. According to the different inclination directions of the left and right third track grooves 37, that is, the left third track groove 37 is inclined to the upper right corner, while the right third track groove 37 is inclined to the lower left corner, so that the second guide rod 31 on the left side moves in the corresponding direction. The first clamping plate 30 moves upward a short distance, while the second guide rod 31 on the right moves the corresponding first clamping plate 30 downward a short distance. Since the cable body 8 is clamped between the first clamping plate 30 and the second clamping plate 32, the upward and downward movement of the first clamping plates 30 on both sides will cause the clamped cable body 8 to be rubbed in the up and down position, so that the cable body 8 on the left is rubbed upward and the cable body 8 on the right is rubbed downward. After being rubbed by the first clamping plate 30, the cable body 8 further increases the friction between the first clamping plate 30 and the second clamping plate 32, making it more firmly clamped. Since the cable body 8 is in the wire-passing groove 33, the rubbing causes the cable body 8 to be deformed upward or downward, so that the three cable bodies 8 are not on the same plane after being rubbed, increasing the distance between the three cable bodies 8 and further increasing the heat dissipation distance between them.

[0034] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0035] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-safety permanent magnet synchronous motor control mechanism, comprising a permanent magnet synchronous motor body (1), a cable body (8), and a control mechanism body (9), characterized in that: The outer wall of the main body (9) of the control mechanism is fixedly installed with a second junction box (13). The outer wall of the second junction box (13) is fixedly connected with a fixed outer plate (14). The outer wall of the fixed outer plate (14) is fixedly connected with a fixed block (15). The inner wall of the fixed block (15) is threaded with a second fixing bolt (16). One end of the second fixing bolt (16) is rotatably connected with a movable frame (17). The movable frame (17) is provided with a first sliding groove (22). The inner wall of the first sliding groove (22) is slidably installed with two movable frames (28). The movable frame (28) is fixedly connected with a second clamping plate (32). The inner wall of the movable frame (28) is slidably connected with a first clamping plate (30). The first clamping plate (30) and the second clamping plate (32) are both provided with a wire-passing groove (33) for clamping the cable body (8).

2. The high-safety-performance permanent magnet synchronous motor control mechanism according to claim 1, characterized in that: The inner wall of the first slide groove (22) is provided with a second slide groove (24). Two first sliders (25) are slidably installed on the inner wall of the second slide groove (24). The outer wall of the first slider (25) is fixedly connected with a first guide rod (23). One end of the first guide rod (23) is rotatably installed with a first ball bearing (26).

3. The high-safety-performance permanent magnet synchronous motor control mechanism according to claim 2, characterized in that: The fixed outer plate (14) has two first track grooves (29), which are inclined, and the first ball (26) is slidably connected to the inner wall of the first track groove (29).

4. The high-safety-performance permanent magnet synchronous motor control mechanism according to claim 1, characterized in that: The outer wall of the first clamping plate (30) is fixedly connected to a second guide rod (31), and two third guide rods (34) are fixedly connected to the second guide rod (31). The end of the third guide rod (34) is rotatably mounted with a second ball bearing (35).

5. The high-safety-performance permanent magnet synchronous motor control mechanism according to claim 4, characterized in that: The inner wall of the movable frame (28) is provided with a second track groove (36) and a third track groove (37), the second track groove (36) and the third track groove (37) are interconnected, the third track groove (37) is set as an inclined groove, and the third guide rod (34) and the second ball (35) are slidably connected to the inner wall of the second track groove (36).

6. The high-safety-performance permanent magnet synchronous motor control mechanism according to claim 1, characterized in that: The second junction box (13) has multiple wiring holes (21) on its outer wall. Multiple wire clamping bolts (18) are threaded onto the second junction box (13). One end of each wire clamping bolt (18) is rotatably connected to a wire clamping plate (19). The outer wall of the wire clamping plate (19) has a wave groove (20). The wire clamping plate (19) is located inside the wiring holes (21).

7. The high-safety-performance permanent magnet synchronous motor control mechanism according to claim 1, characterized in that: The cable body (8) is provided with multiple cables, and the outer wall of the cable body (8) is covered with an insulating protective sheath (7).

8. The high-safety-performance permanent magnet synchronous motor control mechanism according to claim 1, characterized in that: The outer wall of the permanent magnet synchronous motor body (1) is fixedly installed with a first junction box (4), and a sealing cover plate (5) is fixedly installed on the outer wall of the first junction box (4). Multiple terminals (6) are fixedly installed on the first junction box (4), and the multiple terminals (6) are fixedly connected to one end of the cable body (8).

9. The high-safety-performance permanent magnet synchronous motor control mechanism according to claim 1, characterized in that: The outer wall of the permanent magnet synchronous motor body (1) is fixedly connected to a mounting base (2), and multiple first fixing bolts (3) are threaded onto the mounting base (2).

10. The high-safety-performance permanent magnet synchronous motor control mechanism according to claim 1, characterized in that: A control panel (12) is fixedly installed on the main body (9) of the group control mechanism. A knob (10) is rotatably installed on the control panel (12). A group control switch (11) is fixedly installed on the control panel (12).

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