A limiting device and triggering element for a motor drive component

Abstract

This utility model relates to a limiting device, belonging to the field of electromechanical control technology. Specifically, it is a limiting device and triggering element for a motor drive component, including a motor housing containing a motor. In this utility model, when the motor is running, the threaded spindle is driven to rotate by a reducer, which in turn drives the nut to move linearly. Because the protruding screw is located above and in contact with actuators one and two, when the nut contacts the end wall, the nut begins to rotate together with the threaded spindle. The screw drives actuator one to move the switch lever one, causing the switch lever one to move away from the operating switch. This activates the operating switch, stopping the motor. If the motor cannot stop, the threaded spindle continues to rotate with the nut, causing actuator two to also move the switch lever two away, thereby activating the safety switch, cutting off the motor's power supply, and forcing the motor to shut down.

Description

Technical Field

[0001] This utility model relates to the field of electromechanical control technology, specifically a limit device and triggering element for motor drive components. Background Technology

[0002] A greenhouse drive system is an electromechanical integrated system that provides power for equipment such as shading, ventilation, irrigation, and environmental control in modern greenhouses.

[0003] The existing greenhouse drive system uses an integrated stepped spring-triggered operating switch and safety switch. Its drawbacks include the risk of accidental triggering; the small distance between the two switches means the drive system's inertia may cause the safety switch to trigger unexpectedly; and the cumbersome reset process, requiring a reset procedure to restart the system after an accidental trigger, resulting in low efficiency.

[0004] Based on this, the present invention proposes a limiting device and a triggering element for a motor drive component. Utility Model Content

[0005] To address the aforementioned technical problems, this utility model proposes a limiting device and triggering element for motor drive components. By increasing the distance between the operating switch and the safety switch, it avoids the safety switch from being triggered due to inertia. By simplifying the structure, the single-chip drive element is integrated into actuator one and actuator two, thereby reducing costs and increasing reliability. The difference in stiffness ensures that the operating switch is triggered first, with the safety switch serving as a backup.

[0006] The technical solution to achieve the purpose of this utility model is: a limiting device and triggering element for a motor drive component, including a motor housing, a motor housed inside the motor housing, a reducer housed on the motor, a limit switch housing housed on the reducer, a threaded spindle housed inside the limit switch housing, and further comprising;

[0007] Nuts, two nuts are threadedly connected to a threaded spindle, two connecting rings are fixedly connected to each of the two nuts, and two screws one and two screws two are threadedly connected to each of the two connecting rings;

[0008] A limit switch assembly includes an operating switch and a safety switch. The operating switch is externally connected to one of the relays, which is used to control the start and stop of the motor. The safety switch is externally connected to another relay, which is used to control the power supply of the motor.

[0009] Preferably, the reducer is provided with a bearing, and a pinion is fixedly connected to the bearing.

[0010] Another technical solution to achieve the purpose of this utility model is: a triggering element, which is applied to the limiting device of the motor drive component, including a switch lever one and a switch lever two, wherein the switch lever one is disposed on the operating switch and the switch lever two is disposed on the safety switch.

[0011] Preferably, the limit switch housing has an end wall, the end wall contains a driving element, and the driving element has a cutout.

[0012] Preferably, the driving element includes an actuator one and an actuator two, wherein the actuator one is disposed on a switch lever one and the actuator two is disposed on a switch lever two.

[0013] Preferably, the end wall is provided with pin one and pin two, and one end of the actuator one and actuator two is disposed on pin one and pin two.

[0014] Compared with existing technologies, the significant advantages of this invention are:

[0015] In this invention, when the motor is running, the threaded spindle is driven to rotate by the reducer. The threaded spindle then drives the nut to move linearly. Because the protruding screw is located above and in contact with both actuators, when the nut contacts the end wall, it begins to rotate together with the threaded spindle. The screw then moves actuator one, causing the switch lever one to move away from the operating switch. This activates the operating switch, stopping the motor. If the motor cannot stop, the threaded spindle continues to rotate with the nut, causing actuator two to also move the switch lever two away, thus activating the safety switch, cutting off the motor's power supply, and forcing the motor to shut down. Attached Figure Description

[0016] The present invention will be further explained below with reference to the accompanying drawings and embodiments:

[0017] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0018] Figure 2 This is a schematic diagram of the internal three-dimensional structure of the middle end wall of this utility model;

[0019] Figure 3 This is a cross-sectional view of the middle end wall of this utility model;

[0020] Figure 4 This is a comparison diagram of the trigger states of the operating switch and the safety switch of this utility model.

[0021] Explanation of reference numerals in the attached figures:

[0022] 1. Motor housing; 2. Motor; 3. Reducer; 4. Limit assembly; 5. Bearing; 6. Pinion; 7. Limit switch housing; 8. Threaded spindle; 9. Nut; 10. Connecting ring; 11. Screw 1; 12. Screw 2; 13. Actuator 1; 14. Actuator 2; 15. Operating switch; 16. Safety switch; 17. Switch lever 1; 18. Switch lever 2; 19. Pin 1; 20. Pin 2; 21. Drive element; 22. Cutout; 23. End wall. Detailed Implementation

[0023] The present invention will now be described in detail, and the technical solutions in the embodiments of the present invention will be clearly and completely described. 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 protection scope of the present invention.

[0024] This utility model provides an improved limiting device and triggering element for a motor drive component. The technical solution of this utility model is as follows:

[0025] Example 1

[0026] like Figures 1-4 As shown, a limiting device and triggering element for a motor drive component includes a motor housing 1, a motor 2 disposed inside the motor housing 1, a reducer 3 disposed on the motor 2, a limit switch housing 7 disposed on the reducer 3, a threaded spindle 8 disposed inside the limit switch housing 7, and further includes;

[0027] Nut 9, two nuts 9 are threadedly connected to threaded spindle 8. The rotation of threaded spindle 8 drives the nuts 9 to move linearly. When the nuts 9 meet the end wall 23, the nuts 9 will rotate with the rotation of threaded spindle 8. Two connecting rings 10 are fixedly connected to the two nuts 9 respectively. Two screws 11 and two screws 12 are threadedly connected to the two connecting rings 10 respectively. Screws 11 are longer and protrude from the connecting rings 10.

[0028] Limiting component 4 includes an operating switch 15 and a safety switch 16. The operating switch 15 is connected to one of the relays, which is used to control the start and stop of the motor 2. The safety switch 16 is connected to another relay, which is used to control the power supply of the motor 2. By increasing the distance between the operating switch 15 and the safety switch 16, the inertia of the safety switch 16 can be prevented from triggering.

[0029] Furthermore, such as Figure 1As shown, the reducer 3 is equipped with a bearing 5, and a pinion 6 is fixedly connected to the bearing 5. The reducer 3 drives the threaded spindle 8 to rotate through the pinion 6.

[0030] Example 2

[0031] like Figures 1-4 As shown, a triggering element is used in a limiting device for a motor drive component, including a first switch lever 17 and a second switch lever 18. The first switch lever 17 is mounted on an operating switch 15, and the second switch lever 18 is mounted on a safety switch 16. When the first switch lever 17 moves away from the operating switch 15, the operating switch 15 is activated, controlling the motor 2 to stop. When the second switch lever 18 moves away from the safety switch 16, the safety switch 16 is activated, controlling the power supply of the motor 2 to be turned off.

[0032] Furthermore, such as Figures 2-4 As shown, the limit switch housing 7 is provided with an end wall 23, and a drive element 21 is provided inside the end wall 23. A cutout 22 is provided on the drive element 21. The drive element 21 is connected to the actuator 13 and actuator 24 through the cutout 22, thereby reducing production costs and increasing reliability.

[0033] Furthermore, such as Figures 2-4 As shown, the drive element 21 includes an actuator 13 and an actuator 2 14. The actuator 13 is mounted on the switch lever 17, and the actuator 2 14 is mounted on the switch lever 2 18. The stiffness of the actuator 2 14 is greater than that of the actuator 13. The difference in stiffness between the two ensures that the operating switch 15 is triggered first, and the safety switch 16 serves as a backup.

[0034] Furthermore, such as Figures 2-4 As shown, pin 19 and pin 20 are provided inside the end wall 23, and one end of actuator 13 and actuator 24 are provided on pin 19 and pin 20.

[0035] The specific working method is as follows: When the motor 2 is running, the threaded spindle 8 is driven to rotate by the reducer 3. The threaded spindle 8 drives the nut 9 to move linearly. Because the protruding screw 11 is located above and in contact with the actuator 13 and actuator 24, when the nut 9 contacts the end wall 23, the nut 9 begins to rotate together with the threaded spindle 8. The screw 1 drives the actuator 13 to move the switch lever 17, causing the switch lever 17 to move away from the operating switch 15. As a result, the operating switch 15 is activated, and the motor 2 stops. If the motor 2 cannot stop, the threaded spindle 8 continues to rotate with the nut 9, causing the actuator 24 to also move the switch lever 28 away, thereby activating the safety switch 16. The power supply to the motor is cut off, thus forcing the motor 2 to shut down.

[0036] The technical means disclosed in this utility model are not limited to those described above, but also include technical solutions composed of equivalent substitutions of the above technical features. Matters not covered in this utility model are common knowledge to those skilled in the art.

Claims

1. A limiting device for motor driving parts, comprising a motor shell (1), a motor (2) is arranged in the motor shell (1), a speed reducer (3) is arranged on the motor (2), characterized in that: The reducer (3) is provided with a limit switch housing (7), and the limit switch housing (7) is provided with a threaded spindle (8), and also includes; Nut (9), two nuts (9) are threadedly connected to the thread spindle (8), and two connecting rings (10) are fixedly connected to the two nuts (9), and two screws (11) and two screws (12) are threadedly connected to the two connecting rings (10). The limit component (4) includes an operation switch (15) and a safety switch (16). The operation switch (15) is connected to one of the relays, which is used to control the start and stop of the motor (2). The safety switch (16) is connected to another relay, which is used to control the power supply of the motor (2).

2. A limiting device for a motor drive component according to claim 1, characterized in that: The reducer (3) is provided with a bearing (5), and a pinion (6) is fixedly connected to the bearing (5).

3. A triggering element, applied to a limiting device for a motor drive component as described in any one of claims 1-2, characterized in that: It includes a first switch lever (17) and a second switch lever (18), the first switch lever (17) being mounted on the operating switch (15) and the second switch lever (18) being mounted on the safety switch (16).

4. A triggering element according to claim 3, characterized in that: The limit switch housing (7) is provided with an end wall (23), and a driving element (21) is provided inside the end wall (23). A cut (22) is provided on the driving element (21).

5. A triggering element according to claim 4, characterized in that: The driving element (21) includes an actuator one (13) and an actuator two (14). The actuator one (13) is disposed on the switch lever one (17), and the actuator two (14) is disposed on the switch lever two (18).

6. A triggering element according to claim 5, characterized in that: The end wall (23) is provided with pin one (19) and pin two (20), and one end of the actuator one (13) and actuator two (14) is provided on pin one (19) and pin two (20).

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