Limit switch control device

Abstract

The utility model belongs to the technical field of switch automatic control, particularly relates to a limit switch control device, and aims to solve the problems that an existing limit switch speed regulation control device needs to be manually controlled, is low in manual regulation precision and cannot meet speed control requirements. And a rotary switch shaft is rotationally mounted on the limiting switch and used for speed regulation, and mounting pieces are fixedly mounted on the two sides of the limiting switch. The automatic speed regulation device is divided into a manual mode and an automatic mode, in the automatic mode, the working time or the rotating angle of the servo motor is controlled through the control chip, the micro camera feeds back a monitoring result to the control chip, the purpose of automatic speed regulation is achieved, the speed regulation precision can be improved by monitoring and controlling the working time or the rotating angle of the servo motor, and the working efficiency is improved. The use requirements can be met, and the manual mode is set to carry out manual adjustment when the automatic mode breaks down.

Description

Technical Field

[0001] The utility model relates to the technical field of switch automatic control, in particular to a limit switch control device. Background Art

[0002] An angle grinder, also known as a grinding machine or disc grinder, is a grinding tool used for cutting and grinding fiberglass reinforced plastics. Existing angle grinders typically have speed control switches that adjust the speed by turning a speed knob. However, turning the speed knob often causes continuous vibration during operation, which can easily cause the knob to shift, affecting the set operating speed and causing significant inconvenience.

[0003] Publication (Announcement) No.: CN218312679U discloses a limit speed control device, in which a knob seat is fixed on the switch seat, a switch knob is rotatably set on the knob seat, a limit seat is fixed on the switch seat, a slot is set on the limit seat, a limit rod is inserted into the slot, the limit rod is connected to the slot by a spring, the limit rod is clamped to the bottom of the switch knob, and a plurality of limit grooves are annularly arranged on the switch knob corresponding to the limit rod, so that the switch knob can be adjusted step by step when the angle grinder is working, so that it can maintain operation at the specified working speed.

[0004] The existing limit switch speed control device requires manual control, and the manual adjustment accuracy is low and cannot meet the speed control requirements. Utility Model Content

[0005] The purpose of the utility model is to solve the shortcomings of the existing limit switch speed control device, which requires manual control, has low manual adjustment accuracy and cannot meet the speed control requirements, and proposes a limit switch control device.

[0006] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0007] A limit switch control device, comprising:

[0008] A limit switch is rotatably mounted with a rotary switch shaft, the rotary switch shaft being used for speed regulation, and mounting plates being fixedly mounted on both sides of the limit switch;

[0009] The rotary power mechanism is connected to the rotary switch shaft and is used to automatically control the rotation of the rotary switch shaft to achieve the purpose of automatic speed regulation;

[0010] a first indicator needle welded to the outer side of the rotary switch shaft, a first arc-shaped speed line being provided on the outer side of the limit switch, the first indicator needle being matched with the first arc-shaped speed line;

[0011] The monitoring and judging mechanism is arranged on the outside of the rotary switch shaft and is used to monitor the automatic speed regulation result;

[0012] The protective shell is welded to the outer side of the limit switch. A circular hole is reserved on the protective shell, and the rotary switch shaft is rotatably connected to the circular hole.

[0013] Preferably, the rotary power mechanism includes a first gear and a second gear, the first gear is sleeved on the outside of the rotary switch shaft, the second gear is engaged with the first gear, a servo motor is installed on the second gear, and the servo motor is installed on the inner wall of the protective shell.

[0014] Preferably, the monitoring and judgment mechanism includes a straight rod, which is welded to the outside of the rotary switch shaft. A slot is reserved on the straight rod, and a miniature camera is installed in the slot. The miniature camera and the first indicator needle are located on the same vertical axis.

[0015] Preferably, a polygonal rod is installed at the outer end of the rotary switch shaft, a handle is installed on the polygonal rod, and the handle and the polygonal rod are fixed by plugging.

[0016] Preferably, a second arc-shaped speed line is fixedly installed on the outside of the protective shell, and the second arc-shaped speed line is synchronously set with the first arc-shaped speed line. A second indicator needle is fixedly installed on the outside of the rotary switch shaft, and the second indicator needle is adapted to the second arc-shaped speed line for observation during manual speed adjustment.

[0017] Preferably, a control box is fixedly installed on the outside of the limit switch, a touch display is embedded in the front of the control box, a control chip and a battery are provided in the control box, the control chip and the battery are electrically connected, the touch display is electrically connected to the control chip and the battery, and a charging port is connected to the battery for charging the battery.

[0018] In the present invention, the beneficial effects of the limit switch control device are:

[0019] In manual mode of this solution, the handle drives the rotary switch shaft to rotate, and the speed of the limit switch is adjusted by the rotary switch shaft. When the rotary switch shaft rotates, the first indicator needle and the second indicator needle are rotated. By observing the coordination between the second indicator needle and the second arc speed line, the speed adjustment result is manually controlled.

[0020] When the present invention is in automatic mode, the servo motor drives the second gear to rotate, and the second gear cooperates with the first gear to drive the rotary switch shaft to rotate, thereby achieving the purpose of automatic speed regulation. The rotary switch shaft drives the second indicator needle to rotate and cooperates with the first arc speed line. The micro camera is used for monitoring, and the speed regulation is set through the touch display. Then, the servo motor working time or rotation angle is controlled by the control chip. The micro camera feeds back the monitoring results to the control chip to achieve the purpose of automatic speed regulation. By monitoring and controlling the servo motor working time or rotation angle, the speed regulation accuracy can be improved, which can meet the use requirements.

[0021] The utility model is divided into manual mode and automatic mode. In automatic mode, the working time or rotation angle of the servo motor is controlled by the control chip, and the micro camera feeds back the monitoring results to the control chip to achieve the purpose of automatic speed regulation. By monitoring and controlling the working time or rotation angle of the servo motor, the speed regulation accuracy can be improved to meet the use requirements. The manual mode is set to perform manual adjustment when a failure occurs in the automatic mode. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic structural diagram of a limit switch control device proposed in the utility model;

[0023] Figure 2 The utility model proposed Figure 1 Schematic diagram of the right view structure;

[0024] Figure 3 The utility model proposed Figure 1 Schematic diagram of the structure of disassembling the protective shell and control box;

[0025] Figure 4 The utility model proposed Figure 3 Schematic diagram of the structure viewed from above;

[0026] Figure 5 This is a schematic diagram of the structure of the protective shell and control box proposed in the utility model;

[0027] Figure 6 The utility model proposed Figure 5 Schematic diagram of the rear view structure.

[0028] In the figure: 1. Limit switch; 2. Mounting plate; 3. Rotary switch shaft; 4. First arc speed line; 5. First indicator pin; 6. First gear; 7. Second gear; 8. Servo motor; 9. Straight rod; 10. Mini camera; 11. Second indicator pin; 12. Handle; 13. Protective shell; 14. Second arc speed line; 16. Control box; 17. Touch display; 18. Charging port; 19. Round hole; 20. Wireless transmitter; 21. Control chip; 22. Battery. DETAILED DESCRIPTION

[0029] The technical solution of this embodiment will be clearly and completely described below in conjunction with the drawings in this embodiment. Obviously, the described embodiment is only a part of this embodiment, rather than all the embodiments.

[0030] Example 1

[0031] The following combination Figures 1-6 This application is described in further detail.

[0032] A limit switch control device, comprising:

[0033] The limit switch 1 is rotatably mounted with a rotary switch shaft 3, which is used for speed regulation. Mounting pieces 2 are fixedly mounted on both sides of the limit switch 1.

[0034] The rotary power mechanism is connected to the rotary switch shaft 3 and is used to automatically control the rotation of the rotary switch shaft 3 to achieve the purpose of automatic speed regulation;

[0035] The first indicator needle 5 is welded to the outside of the rotary switch shaft 3. The outside of the limit switch 1 is provided with a first arc-shaped speed line 4. The first indicator needle 5 cooperates with the first arc-shaped speed line 4.

[0036] The monitoring and judging mechanism is arranged on the outside of the rotary switch shaft 3 and is used to monitor the automatic speed regulation result;

[0037] The protective shell 13 is welded to the outer side of the limit switch 1 . A circular hole 19 is reserved on the protective shell 13 , and the rotary switch shaft 3 is rotatably connected to the circular hole 19 .

[0038] Reference Figure 3 and Figure 4 In this embodiment, the rotary power mechanism includes a first gear 6 and a second gear 7. The first gear 6 is sleeved on the outside of the rotary switch shaft 3. The second gear 7 is engaged with the first gear 6. A servo motor 8 is installed on the second gear 7. The servo motor 8 is installed on the inner wall of the protective shell 13.

[0039] Reference Figure 3 and Figure 4 In this embodiment, the monitoring and judgment mechanism includes a straight rod 9, which is welded to the outside of the rotary switch shaft 3. A slot is reserved on the straight rod 9, and a miniature camera 10 is installed in the slot. The miniature camera 10 and the first indicator needle 5 are located on the same vertical axis.

[0040] Reference Figure 3 and Figure 4 In this embodiment, a polygonal rod is installed at the outer end of the rotary switch shaft 3, and a handle 12 is installed on the polygonal rod. The handle 12 is fixed to the polygonal rod by plugging.

[0041] Reference Figure 1 and Figure 2 In this embodiment, a second arc-shaped speed line 14 is fixedly installed on the outside of the protective shell 13. The second arc-shaped speed line 14 is synchronously set with the first arc-shaped speed line 4. A second indicator needle 11 is fixedly installed on the outside of the rotary switch shaft 3. The second indicator needle 11 is adapted to the second arc-shaped speed line 14 and is used for observation during manual speed adjustment.

[0042] Reference Figure 5 and Figure 6 In this embodiment, a control box 16 is fixedly installed on the outside of the limit switch 1, and a touch display 17 is embedded in the front of the control box 16. A control chip 21 and a battery 22 are provided in the control box 16. The control chip 21 and the battery 22 are electrically connected. The touch display 17 is electrically connected to the control chip 21 and the battery 22. A charging port 18 is connected to the battery 22 for charging the battery 22.

[0043] Working principle: when in use, it is divided into manual mode and automatic mode.

[0044] In manual mode, the handle 12 drives the rotary switch shaft 3 to rotate, and the speed of the limit switch 1 is adjusted by the rotary switch shaft 3 (the internal specific debugging is existing technology and is not repeated here). When the rotary switch shaft 3 rotates, the first indicator needle 5 and the second indicator needle 11 are rotated. By observing the coordination between the second indicator needle 11 and the second arc speed line 14, the speed adjustment result is manually controlled.

[0045] In automatic mode, the servo motor 8 drives the second gear 7 to rotate, and the second gear 7 cooperates with the first gear 6 to drive the rotary switch shaft 3 to rotate to achieve the purpose of automatic speed regulation. The rotary switch shaft 3 drives the second indicator needle 11 to rotate and cooperates with the first arc speed line 4. It is monitored by the micro camera 10 and the speed is set by the touch display 17. Then, the servo motor 8 working time or rotation angle is controlled by the control chip 21. The micro camera 10 feeds back the monitoring results to the control chip 21 to achieve the purpose of automatic speed regulation. By monitoring and controlling the working time or rotation angle of the servo motor 8, the speed regulation accuracy can be improved to meet the use requirements. The limit switch 1 is in the working state in the figure. The first indicator needle 5 and the second indicator needle 11 on the rotary switch shaft 3 rotate to the left to be the closed stop state, and rotate to the right to be the maximum state.

[0046] Example 2

[0047] The rest of the embodiment 2 is the same as the embodiment 1, except that: a wireless transmitter 20 is also provided in the control box 16, and the wireless transmitter 20 is wirelessly connected to a computer terminal, and the staff can perform remote control through the computer terminal. This application includes all the structural shapes, sizes and materials of the embodiment 1, which can be selected and adjusted to meet the specific usage conditions. The accompanying drawings are all schematic structural diagrams, and the specific actual sizes can be adjusted appropriately.

[0048] The above is only a preferred specific implementation method of this embodiment, but the protection scope of this embodiment is not limited to this. Any technician familiar with this technical field can make equivalent replacements or changes based on the technical solution and utility model concept of this embodiment within the technical scope disclosed in this embodiment, and they should be covered by the protection scope of this embodiment.

Claims

1. A limit switch control device, characterized in that: include: A limit switch (1) is rotatably mounted with a rotary switch shaft (3), the rotary switch shaft (3) being used for speed regulation, and mounting plates (2) are fixedly mounted on both sides of the limit switch (1); The rotary power mechanism is connected to the rotary switch shaft (3) and is used to automatically control the rotation of the rotary switch shaft (3) to achieve the purpose of automatic speed regulation; A first indicator needle (5) is welded to the outside of the rotary switch shaft (3); a first arc-shaped speed line (4) is provided on the outside of the limit switch (1); and the first indicator needle (5) cooperates with the first arc-shaped speed line (4); A monitoring and judging mechanism is arranged outside the rotary switch shaft (3) and is used to monitor the automatic speed regulation result; The protective shell (13) is welded to the outer side of the limit switch (1). A circular hole (19) is reserved on the protective shell (13). The rotary switch shaft (3) is rotatably connected to the circular hole (19).

2. A limit switch control device according to claim 1, characterized in that: The rotary power mechanism comprises a first gear (6) and a second gear (7), wherein the first gear (6) is sleeved on the outside of the rotary switch shaft (3), the second gear (7) is meshed with the first gear (6), a servo motor (8) is mounted on the second gear (7), and the servo motor (8) is mounted on the inner wall of the protective shell (13).

3. A limit switch control device according to claim 1, characterized in that: The monitoring and judging mechanism comprises a straight rod (9), the straight rod (9) being welded to the outside of the rotary switch shaft (3), a slot being reserved on the straight rod (9), a micro camera (10) being installed in the slot, and the micro camera (10) and the first indicator needle (5) being located on the same vertical axis.

4. A limit switch control device according to claim 1, characterized in that: A polygonal rod is mounted on the outer end of the rotary switch shaft (3), and a handle (12) is mounted on the polygonal rod.

5. A limit switch control device according to claim 1, characterized in that: A second arc-shaped speed line (14) is fixedly mounted on the outer side of the protective shell (13), and the second arc-shaped speed line (14) and the first arc-shaped speed line (4) are synchronously arranged.

6. A limit switch control device according to claim 5, characterized in that: A second indicator needle (11) is fixedly mounted on the outer side of the rotary switch shaft (3); the second indicator needle (11) is matched with the second arc-shaped speed line (14) and is used for observation during manual speed regulation.

7. A limit switch control device according to claim 1, characterized in that: A control box (16) is fixedly mounted on the outside of the limit switch (1), a touch display (17) is embedded in the front of the control box (16), a control chip (21) and a battery (22) are arranged in the control box (16), the control chip (21) and the battery (22) are electrically connected, and the touch display (17) is electrically connected to the control chip (21) and the battery (22).

8. A limit switch control device according to claim 7, characterized in that: The battery (22) is connected to a charging port (18) for charging the battery (22).

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