Non-mechanical contact master controller

Abstract

This utility model provides a non-mechanical contact master controller, including a rocker arm that can swing along a cross-shaped path; an iron block fixed to the head of the rocker arm; a retainer with a circular hole on its bottom surface for the rocker arm to pass through, the circular hole limiting the swing range of the rocker arm so that the rocker arm does not contact the inner wall of the retainer when it swings to its limit position; a roll forward rotation proximity switch fixed to one side of the retainer; a roll reverse rotation proximity switch fixed to the other side of the retainer; a mill speed increase proximity switch fixed to one end of the retainer; and a mill speed decrease proximity switch fixed to the other end of the retainer. This utility model designs a retainer on the outside of the rocker arm to limit the swing range of the rocker arm, and installs proximity switches on the outer periphery of the retainer. When the rocker arm approaches and triggers the proximity switch, the circuit can be switched on or off to execute the operation command, avoiding mechanical damage caused by frequent contact between the rocker arm and buttons or switch levers.

Description

Technical Field

[0001] This utility model relates to the field of ingot rolling technology, and in particular to a non-mechanical contact master controller in the ingot rolling process. Background Technology

[0002] In ingot rolling, contact-type master controllers or mechanical master switches are typically used to control the ingot rolling rollers. Contact-type master controllers use the action of button contacts to open and close circuits, thereby controlling changes in equipment speed and direction of movement. Mechanical master switches, on the other hand, use rocker arm displacement to press the limit switch lever, thus opening and closing circuits and controlling changes in equipment speed and direction of movement.

[0003] In actual use, whether it is a contact-type master controller or a mechanical master switch, they all have the same characteristic: the joystick will contact the button or limit switch to open or close the circuit during the movement. However, with the frequent increase or decrease of the hot rolling mill speed and the frequent change of the rolling direction, the joystick needs to frequently contact the button or switch. Long-term use will reduce the fatigue strength of the button and switch, and thus cause damage.

[0004] like Figure 1 As shown, the working principle of the original ingot rolling master controller is as follows:

[0005] When the roll needs to rotate forward, the operator swings the control lever 8 to the left, causing the lever 8 to contact the paddle 9 of the roll forward rotation limit switch 10, thereby connecting the circuit for the roll to rotate forward and enabling the mill to perform forward rotation. The working principle of the roll reverse rotation limit switch 11, the mill speed increase limit switch 12, and the mill speed decrease limit switch 13 is similar. However, because the control lever 8 frequently contacts the paddle 9, the fatigue strength of the paddle 9 will decrease, making it prone to damage. Summary of the Invention

[0006] The purpose of this invention is to provide a non-mechanical contact master controller that connects the circuit without the need for the rocker arm to contact the switch during the ingot rolling process, thus avoiding the problem of frequent contact causing easy damage to the switch.

[0007] To achieve the above objectives, the technical solution of this utility model is as follows:

[0008] Non-mechanical contact master controllers, including

[0009] The joystick can swing along a cross-shaped path;

[0010] An iron block is fixed to the head of the rocker arm;

[0011] The retainer has a circular hole on its bottom surface for the rocker arm to pass through. The circular hole limits the swing range of the rocker arm so that when the rocker arm swings to its limit position, the iron block does not contact the side of the retainer.

[0012] A roll forward rotation proximity switch is fixed to one side of the cage;

[0013] A roll reversal proximity switch is fixed on the other side of the cage, symmetrical to the roll forward rotation proximity switch on both sides;

[0014] A mill speed increase proximity switch is fixed to one end of the cage;

[0015] A mill speed reduction proximity switch is fixed to the other end of the cage, symmetrical to the two ends of the mill speed increase proximity switch;

[0016] When the rocker arm swings to both sides, the iron block comes into contact with the forward rotation proximity switch and the reverse rotation proximity switch of the roll.

[0017] When the rocker arm swings to both ends, the iron block comes into close contact with the mill speed increase proximity switch and the mill speed decrease proximity switch.

[0018] Furthermore, the retainer is rectangular, and the roll forward rotation proximity switch, the roll reverse rotation proximity switch, the mill speed increase proximity switch, and the mill speed decrease proximity switch are respectively fixed on the four sides of the retainer.

[0019] Furthermore, the roll forward rotation proximity switch and the roll reverse rotation proximity switch are located on the left and right sides of the cage, and the mill speed increase proximity switch and the mill speed decrease proximity switch are located at the front and rear ends of the cage.

[0020] This invention modifies the rocker structure of the master controller during ingot rolling. A retainer is designed on the outside of the rocker to limit its swing range. A proximity switch is installed on the outer periphery of the retainer to replace the traditional contact-type limit switch. This design allows the rocker to simply approach and trigger the proximity switch when controlling the mill movement, without directly contacting the switch lever to execute the circuit switching operation command. This avoids mechanical damage caused by fatigue strength reduction due to frequent contact between the rocker and buttons / switch levers, and ultimately reduces the safety risk of the ingot detaching from the roller table. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of a conventional master controller.

[0022] Figure 2 This is a schematic diagram of the overall structure of this utility model.

[0023] Figure label:

[0024] 1. Joystick; 2. Iron block; 3. Roll forward rotation proximity switch; 4. Roll reverse rotation proximity switch;

[0025] 5. Mill speed increase proximity switch; 6. Mill speed decrease proximity switch; 7. Cage;

[0026] 8. Control joystick, 9. Paddle, 10. Roll forward travel limit switch, 11. Roll reverse travel limit switch;

[0027] 12. Rolling mill speed increase limit switch; 13. Rolling mill speed decrease limit switch. Detailed Implementation

[0028] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0029] This embodiment discloses a non-mechanical contact master controller, such as... Figure 2 As shown, it includes a rocker arm 1, an iron block 2, a roll forward rotation proximity switch 3, a roll reverse rotation proximity switch 4, a mill speed increase proximity switch 5, a mill speed decrease proximity switch 6, and a retainer 7.

[0030] The joystick 1 can swing along a cross-shaped path in the forward-backward and left-right directions. The iron block 2 is installed on the head of the joystick 1 and is fixedly connected to the joystick 1.

[0031] The forward rotation proximity switch 3 is fixed on the left side of the retainer 7, and the reverse rotation proximity switch 4 is fixed on the right side of the retainer 7. The forward rotation proximity switch 3 and the reverse rotation proximity switch 4 are symmetrically arranged on the left and right sides.

[0032] like Figure 2 As shown, the mill speed increase proximity switch 5 is fixed to the front end of the cage 7, and the mill speed decrease proximity switch 6 is fixed to the rear end of the cage 7. The mill speed increase proximity switch 5 and the mill speed decrease proximity switch 6 are symmetrically arranged front and rear.

[0033] The roll forward rotation proximity switch 3, the roll reverse rotation proximity switch 4, the mill speed increase proximity switch 5, and the mill speed decrease proximity switch 6 are all fixedly connected to the retainer 7. The retainer 7 is rectangular and is arranged around the outer periphery of the rocker arm 1. The retainer 7 and the iron block 2 are located on the same horizontal plane.

[0034] The roll forward rotation proximity switch 3 and the roll reverse rotation proximity switch 4 are fixed on the left and right sides of the retainer 7, and the mill speed increase proximity switch 5 and the mill speed decrease proximity switch 6 are fixed on the front and rear ends of the retainer 7.

[0035] The assembly of the master controller in this embodiment includes the following steps:

[0036] 1) According to Figure 1 Show the original operating table mounting dimensions, and make a rectangular retainer 7 to support the four proximity switches and the rocker arm 1. Drill mounting holes around the retainer 7 that match the diameter of the proximity switches.

[0037] 2) A circular hole for mounting the rocker arm 1 is made on the bottom surface of the cage 7 square frame structure. This circular hole can limit the range of motion of the rocker arm 1 and ensure that when the rocker arm 1 moves to the limit position, the rocker arm 1 and the iron block 2 will not come into contact with the four sides of the cage 7. The size of the cage 7 square frame can be adjusted according to actual needs.

[0038] 3) Weld or assemble a cubic iron block 2 at the head of the rocker arm 1. The size of the iron block 2 can be adjusted appropriately according to the size of the cage 7 and the installation position of the proximity switch.

[0039] 4) Install the four proximity switches onto the four sides of the cage 7 respectively. Extend the rocker arm 1 through the round hole to the top of the cage 7. Adjust the extension length of the four proximity switches to ensure that the proximity switches can receive the signal without being contacted by the rocker arm 1 and the iron block 2 when they are in their extreme positions.

[0040] like Figure 2 As shown, when the rocker arm 1 swings to the left and right, the iron block 2 cooperates with the roller forward rotation proximity switch 3 and the roller reverse rotation proximity switch 4. The iron block 2 does not contact the sensing area of ​​the roller forward rotation proximity switch 3 and the roller reverse rotation proximity switch 4. When the roller forward rotation proximity switch 3 and the roller reverse rotation proximity switch 4 detect that the iron block 2 is close, they will activate the roller forward rotation and roller reverse rotation circuit, causing the roller to perform forward rotation and reverse rotation operations.

[0041] When the rocker arm 1 swings forward and backward, the iron block 2 cooperates with the mill speed increase proximity switch 5 and the mill speed decrease proximity switch 6. The iron block 2 does not contact the sensing area of ​​the mill speed increase proximity switch 5 and the mill speed decrease proximity switch 6. When the mill speed increase proximity switch 5 and the mill speed decrease proximity switch 6 detect the iron block 2 approaching, they will activate the mill speed increase and mill speed decrease circuits, causing the mill to perform speed increase and speed decrease operations.

[0042] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A non-mechanical contact master controller, characterized in that, include The joystick (1) can swing along a cross-shaped path; Iron block (2) is fixed to the head of the rocker arm (1); The retainer (7) has a circular hole on its bottom surface for the rocker arm (1) to pass through. The circular hole limits the swing range of the rocker arm (1) so that when the rocker arm (1) swings to the limit position, the iron block (2) does not contact the side of the retainer (7). A roll forward rotation proximity switch (3) is fixed to one side of the cage (7); A reversing proximity switch (4) is fixed on the other side of the cage (7), symmetrical to the two sides of the forward rotation proximity switch (3); A mill speed increase proximity switch (5) is fixed to one end of the cage (7); The mill speed reduction proximity switch (6) is fixed to the other end of the cage (7) and is symmetrical to the two ends of the mill speed increase proximity switch (5); When the rocker arm (1) swings to both sides, the iron block (2) comes into close contact with the roller forward rotation proximity switch (3) and the roller reverse rotation proximity switch (4). When the rocker arm (1) swings to both ends, the iron block (2) approaches and engages with the mill speed increase proximity switch (5) and the mill speed decrease proximity switch (6).

2. The non-mechanical contact master controller according to claim 1, characterized in that, The retainer (7) is rectangular, and the roll forward rotation proximity switch (3), the roll reverse rotation proximity switch (4), the mill speed increase proximity switch (5), and the mill speed decrease proximity switch (6) are respectively fixed on the four sides of the retainer (7).

3. The non-mechanical contact master controller according to claim 2, characterized in that, The roll forward rotation proximity switch (3) and the roll reverse rotation proximity switch (4) are located on the left and right sides of the cage (7), and the mill speed increase proximity switch (5) and the mill speed decrease proximity switch (6) are located at the front and rear ends of the cage (7).

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