Automatic deviation rectifying mechanism for stainless steel plate rolling mill

Abstract

The utility model discloses a kind of automatic deviation rectification mechanisms for stainless steel plate rolling mill, including mounting bracket, the right side of mounting bracket inside is provided with cavity, the left side of mounting bracket lower end is equipped with laser range finder one, further including deviation rectification subassembly;Deviation rectification subassembly: it includes mounting rod, gear, rack plate and limit roller, the middle part of cavity bottom wall is rotatably connected to mounting rod, gear is set on the lower side of mounting rod outer arc surface, left and right sides in cavity interior are respectively equipped with rack plate, two groups of rack plate are all engaged with gear connection, the right side of mounting bracket lower end is respectively equipped with limit roller, the front end of mounting bracket is provided with controller, the input end of controller is electrically connected with external power supply, this automatic deviation rectification mechanism for stainless steel plate rolling mill can give stainless steel plate a uniform thrust, solve the problem that stainless steel plate deviates due to the extension of two groups of springs is not consistent, ensure the deviation rectification effect to stainless steel plate.

Description

Technical Field

[0001] This utility model relates to the technical field of stainless steel plate processing equipment, specifically an automatic correction mechanism for stainless steel plate rolling mills. Background Technology

[0002] An automatic alignment mechanism for stainless steel plate rolling mills is a device used to ensure that stainless steel plates maintain the correct position during the rolling process. This mechanism automatically detects and adjusts the plate's position to ensure it does not deviate from the predetermined trajectory during rolling, thereby improving production efficiency and product quality. The prior art is disclosed in patent publication number CN 216064869. U's patent discloses a guiding mechanism for a cold rolling mill of stainless steel sheet, including a support rod, a limit alarm component, and an installation component. The limit alarm component is located on one side of the support rod and includes a connecting plate on one side of the support rod and a support plate inside the connecting plate. The installation component is located on both sides of the connecting plate. The steel plate is placed between the limit plate and the support plate. During use, although the device can move the limit plate through two sets of springs to correct the stainless steel sheet, the extensibility of the two sets of springs is not completely the same, so the moving distance of the two sets of limit plates is also inconsistent. Due to the inconsistent moving positions of the two sets of limit plates, the sheet may be subjected to uneven force during the guiding process, causing the sheet to deviate and thus reducing the correction effect. Therefore, we propose an automatic correction mechanism for a stainless steel sheet rolling mill. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the existing defects and provide an automatic correction mechanism for stainless steel plate rolling mills. Through the cooperation of gears and racks, it can simultaneously drive two sets of limit rollers to move. The two sets of limit rollers move the same distance, thereby giving the stainless steel plate a uniform thrust. This solves the problem of stainless steel plate deviation caused by the inconsistent extensibility of the two sets of springs, ensures the correction effect of stainless steel plate, improves the accuracy of stainless steel plate position, and can effectively solve the problems in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: an automatic correction mechanism for a stainless steel plate rolling mill, including a mounting frame, a cavity provided on the right side inside the mounting frame, a laser rangefinder on the left side of the lower end of the mounting frame, and a correction component.

[0005] The alignment correction assembly includes a mounting rod, gears, rack plates, and limiting rollers. The mounting rod is rotatably connected to the middle of the bottom wall of the cavity. A gear is provided on the lower side of the outer arc surface of the mounting rod. Rack plates are provided on the left and right sides inside the cavity, and both sets of rack plates are meshed with the gears. Limiting rollers are provided on the right side of the lower end of the mounting frame. Through the cooperation of the gears and rack plates, the two sets of limiting rollers can be moved simultaneously. The two sets of limiting rollers move the same distance, thus providing a uniform thrust to the stainless steel sheet. This solves the problem of stainless steel sheet misalignment caused by the inconsistent extensibility of the two sets of springs, ensuring the alignment correction effect of the stainless steel sheet and improving the accuracy of the stainless steel sheet's position.

[0006] Furthermore, a controller is provided at the front end of the mounting bracket. The input end of the controller is electrically connected to an external power supply, and the laser rangefinder is bidirectionally electrically connected to the controller, enabling the control of the electrical components inside the equipment.

[0007] Furthermore, the correction assembly also includes an adjusting plate, a fixing plate, a vertical plate, and a fixing seat. The adjusting plate is slidably connected to the adjusting grooves provided in the middle of the front and rear walls of the cavity. A fixing plate is provided on the inner side of each of the two sets of adjusting plates. A rack plate is provided on the right side of the front end of the rear fixing plate and the left side of the rear end of the front fixing plate. A vertical plate is provided on the outer side of each of the two sets of adjusting plates. The vertical plates are slidably connected to the guide grooves provided on the right side of the bottom wall of the mounting frame. A fixing seat is provided on the lower side of the inner side of each of the two sets of vertical plates. A set of limiting rollers is rotatably connected between the inner sides of the two vertically adjacent sets of fixing seats, which can adjust the position of the limiting rollers.

[0008] Furthermore, it also includes a laser rangefinder three, which is set on the upper side of the front end of the rear upright plate. The laser rangefinder three corresponds to the front and rear positions of the front upright plate. The laser rangefinder three is bidirectionally electrically connected to the controller and can detect the position of the front upright plate.

[0009] Furthermore, a worm gear is rotatably connected to the upper side of the right wall of the cavity, and a worm wheel is provided on the upper side of the outer arc surface of the mounting rod. The worm gear and the worm wheel are meshed and connected. A servo motor is provided on the rear side of the right end of the mounting bracket. The left end of the output shaft of the servo motor is fixedly connected to the right end of the worm gear. The input end of the servo motor is electrically connected to the output end of the controller, which can drive the mounting rod to rotate.

[0010] Furthermore, the left side of the mounting frame is provided with two sets of fixing rods, which are slidably connected to the corresponding sliding holes on the upper end of the connecting plate. Connecting arms are slidably connected in the sliding grooves opened on the left side of the bottom wall of the mounting frame. The upper ends of the two sets of connecting arms are fixedly connected to the lower end of the connecting plate. Laser rangefinders are provided on the lower side of the inner ends of the two sets of connecting arms. An electric push rod is provided in the middle of the top wall of the mounting frame. The lower end of the telescopic end of the electric push rod is fixedly connected to the upper end of the connecting plate. The input end of the electric push rod is electrically connected to the output end of the controller, which can adjust the position of the laser rangefinder.

[0011] Furthermore, a second laser rangefinder is installed on the front side of the top wall of the mounting bracket. The second laser rangefinder is located on the rear side of the outer arc surface of the fixed rod and the front side of the electric push rod. The second laser rangefinder corresponds to the vertical position of the connecting plate. The second laser rangefinder is bidirectionally electrically connected to the controller and can detect the position of the connecting plate.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: This automatic correction mechanism for stainless steel plate rolling mill has the following advantages:

[0013] By using a combination of gears and racks, two sets of limiting rollers can be moved simultaneously. The two sets of limiting rollers move the same distance, thus providing a uniform thrust to the stainless steel sheet. This solves the problem of stainless steel sheet misalignment caused by inconsistent extensibility of the two sets of springs, ensuring the correction effect of the stainless steel sheet and improving the accuracy of its position. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the left-side cross-sectional structure of the present invention;

[0016] Figure 3 This is a schematic diagram of the lower sectional structure of the present invention;

[0017] Figure 4 This is a schematic diagram of the internal structure of the cavity in this utility model;

[0018] Figure 5 This is an enlarged structural diagram of point A in this utility model.

[0019] In the diagram: 1. Mounting bracket, 2. Controller, 3. Cavity, 4. Correction assembly, 41. Mounting rod, 42. Gear, 43. Adjusting plate, 44. Fixing plate, 45. Rack plate, 46. Vertical plate, 47. Fixing seat, 48. Limiting roller, 5. Worm gear, 6. Worm wheel, 7. Servo motor, 8. Fixing rod, 9. Connecting plate, 10. Connecting arm, 11. Laser rangefinder I, 12. Electric push rod, 13. Laser rangefinder II, 14. Laser rangefinder III. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figure 1-5 This embodiment provides a technical solution: an automatic correction mechanism for a stainless steel plate rolling mill, including a mounting frame 1, a cavity 3 on the right side inside the mounting frame 1, and a laser rangefinder 11 on the left side of the lower end of the mounting frame 1. During use, the built-in light source of the laser rangefinder 13 emits a laser beam to the upper end of the connecting plate 9. When the laser comes into contact with the upper end of the connecting plate 9, it is reflected, and then the laser rangefinder 13 receives the reflected light. The laser rangefinder 13 calculates the distance between the lower end of the laser rangefinder 13 and the upper end of the connecting plate 9 by measuring the round-trip time of the laser. It also includes a correction component 4.

[0022] Correction assembly 4 includes a mounting rod 41, a gear 42, a rack plate 45, and a limiting roller 48. The mounting rod 41 is rotatably connected to the middle of the bottom wall of the cavity 3. The gear 42 is provided on the lower side of the outer arc surface of the mounting rod 41. The rack plates 45 are respectively provided on the left and right sides inside the cavity 3. Both sets of rack plates 45 are meshed with the gear 42. The limiting roller 48 is provided on the right side of the lower end of the mounting frame 1. During the rotation of the gear 42, it will drive the rack plate 45 to move through the meshing connection. The gear 42, rack plate 45, and other components are located in the closed cavity. Inside cavity 3, the cavity 3 can prevent components such as gear 42 and rack plate 45 from direct contact with the external environment. The two sets of rack plates 45 move in opposite directions, and the rack plates 45 will drive the limiting rollers 48 to move. Through the cooperative arrangement of gear 42 and rack plate 45, the two sets of limiting rollers 48 can be driven to move simultaneously. The two sets of limiting rollers 48 move the same distance, which solves the problem of stainless steel plate offset caused by the inconsistent extensibility of the two sets of springs, ensures the correction effect of stainless steel plate, and improves the accuracy of stainless steel plate position.

[0023] Among them: the front end of the mounting bracket 1 is equipped with a controller 2, the input end of the controller 2 is electrically connected to an external power supply, and the laser rangefinder 11 is bidirectionally electrically connected to the controller 2, which can regulate the electrical components inside the equipment.

[0024] The correction assembly 4 further includes an adjusting plate 43, a fixing plate 44, a vertical plate 46, and a fixing seat 47. The adjusting plate 43 is slidably connected to the adjusting grooves provided in the middle of the front and rear walls of the cavity 3. The inner ends of the two sets of adjusting plates 43 are provided with fixing plates 44. The right side of the front end of the rear fixing plate 44 and the left side of the rear end of the front fixing plate 44 are respectively provided with rack plates 45. The outer ends of the two sets of adjusting plates 43 are provided with vertical plates 46. The vertical plates 46 are slidably connected to the guide grooves provided on the right side of the bottom wall of the mounting frame 1. The lower sides of the inner ends of the two sets of vertical plates 46 are provided with fixing seats 47. A set of limiting rollers 48 are rotatably connected between the inner sides of two vertically adjacent sets of fixed seats 47. The rack plate 45 drives the vertical plate 46 to move through the fixed plate 44. The vertical plate 46 drives the limiting rollers 48 to move through the fixed seats 47. At this time, the distance between the limiting rollers 48 and the stainless steel plate will gradually decrease. When the limiting rollers 48 contact the stainless steel plate, the limiting rollers 48 will drive the stainless steel plate to move. When the distance between the limiting rollers 48 and the stainless steel plate is equal to j, it means that the position of the stainless steel plate is returned to the correct position, thereby realizing the correction work of the stainless steel plate.

[0025] It also includes a laser rangefinder 314, which is located on the upper side of the front end of the rear upright plate 46. The laser rangefinder 314 corresponds to the front and rear positions of the front upright plate 46. The laser rangefinder 314 is bidirectionally electrically connected to the controller 2. The laser rangefinder 213 can measure the distance between its front end and the rear end of the front upright plate 46.

[0026] The cavity 3 has a worm gear 5 rotatably connected to the upper side of the right wall, and a worm wheel 6 is provided on the upper side of the outer arc surface of the mounting rod 41. The worm gear 5 and the worm wheel 6 are meshed together. A servo motor 7 is provided on the rear side of the right end of the mounting bracket 1. The left end of the output shaft of the servo motor 7 is fixedly connected to the right end of the worm gear 5. The input end of the servo motor 7 is electrically connected to the output end of the controller 2. The servo motor 7 starts to run through the control of the controller 2. The output shaft of the servo motor 7 drives the worm gear 5 to rotate. During the rotation, the worm gear 5 will drive the worm wheel 6 to rotate through the meshing connection. The worm wheel 6 will drive the gear 42 to rotate through the mounting rod 41.

[0027] The mounting frame 1 has two sets of fixing rods 8 on its left side, which are slidably connected to the upper end of the connecting plate 9. Connecting arms 10 are slidably connected to the sliding grooves on the left side of the bottom wall of the mounting frame 1. The upper ends of both sets of connecting arms 10 are fixedly connected to the lower end of the connecting plate 9. Laser rangefinders 11 are installed on the lower sides of the inner ends of both sets of connecting arms 10. An electric push rod 12 is installed in the middle of the top wall of the mounting frame 1. The lower end of the telescopic end of the electric push rod 12 is fixedly connected to the upper end of the connecting plate 9. The input end of the electric push rod 12 is electrically connected to the output end of the controller 2. The electric push rod 12 starts to move under the control of the controller 2. Okay, the telescopic end of the electric push rod 12 extends, so that the electric push rod 12 drives the connecting arm 10 to move downward through the connecting plate 9. During the movement of the connecting plate 9, the fixed rod 8 provides a guide support, thereby reducing the radial force applied to the electric push rod 12 by the connecting plate 9 and preventing the telescopic end of the electric push rod 12 from bending and deforming. The radial force of the electric push rod 12 is borne by the sliding of the fixed rod 8. The electric push rod 12 is only subjected to the axial force from above and below. The connecting arm 10 will drive the laser rangefinder 11 to move downward. When the distance between the lower end of the laser rangefinder 13 and the upper end of the connecting plate 9 is equal to d, it means that the laser rangefinder 11 has reached the front and rear sides of the stainless steel plate.

[0028] Among them: a laser rangefinder 2 13 is installed on the front side of the top wall of the mounting bracket 1. The laser rangefinder 2 13 is located on the rear side of the outer arc surface of the fixed rod 8 and the front side of the electric push rod 12. The laser rangefinder 2 13 corresponds to the upper and lower positions of the connecting plate 9. The laser rangefinder 2 13 is bidirectionally electrically connected to the controller 2. The laser rangefinder 2 13 can measure the distance between its lower end and the upper end of the connecting plate 9.

[0029] The working principle of the automatic correction mechanism for a stainless steel plate rolling mill provided by this utility model is as follows: Before use, the mounting frame 1 is placed on the belt conveyor for feeding the stainless steel plate rolling mill. Then, the fastening screws are passed through the threaded holes on the front and rear sides of the lower end of the mounting frame 1 and connected to the belt conveyor, thereby realizing the installation and fixation of the mounting frame 1 and its internal components. Then, the stainless steel plate is placed on the external belt conveyor. Then, the distance between the center of the laser rangefinder 11 and the upper end of the stainless steel plate and the thickness of the stainless steel plate are measured, for example, a and b. Subsequently, the distance between its lower end and the upper end of the connecting plate 9 is measured by the laser rangefinder 2 13. During the use of the laser rangefinder 2 13, the built-in light source of the laser rangefinder 2 13... A laser beam is emitted to the upper end of the connecting plate 9. Upon contact with the upper end of the connecting plate 9, the laser beam is reflected, and then the laser rangefinder 13 receives the reflected light. The laser rangefinder 13 calculates the distance between its lower end and the upper end of the connecting plate 9 by measuring the round-trip time of the laser beam (let's call it c). The laser rangefinder 13 then transmits the detected information to the controller 2 via its built-in data transmission module. The controller 2 receives the detected data through its built-in serial communication port. Then, it first divides the thickness of the stainless steel plate by 2, and then adds the distance between the lower end of the laser rangefinder 13 and the upper end of the connecting plate 9, and the distance between the center of the laser rangefinder 11 and the upper end of the stainless steel plate. This gives the distance when the laser rangefinder 11... When the laser rangefinder 13 reaches the front and rear sides of the stainless steel plate, the distance between the lower end of the laser rangefinder 13 and the upper end of the connecting plate 9, if denoted as d, is d = b ÷ 2 + a + c. Then, through the control of the controller 2, the electric push rod 12 starts to operate, and the telescopic end of the electric push rod 12 extends, thereby causing the electric push rod 12 to drive the connecting arm 10 downward through the connecting plate 9. During the movement of the connecting plate 9, the fixing rod 8 provides a guiding support, thereby reducing the radial force applied to the electric push rod 12 by the connecting plate 9 and preventing the telescopic end of the electric push rod 12 from bending and deforming. The radial force of the electric push rod 12 is borne by the sliding of the fixing rod 8, and the electric push rod 12 is only subjected to the axial force from top to bottom. The connecting arm 10 will drive the laser rangefinder 11 to move downward. When the laser rangefinder 13... When the distance between the lower end and the upper end of the connecting plate 9 is equal to d, it means that the laser rangefinder 11 has reached the front and rear sides of the stainless steel plate. After the stainless steel plate passes the laser rangefinder 11, under normal circumstances, the distance between the two sets of laser rangefinders 11 and the front and rear ends of the stainless steel plate is equal. Then, the distance between the laser rangefinder 11 and the stainless steel plate is detected by the laser rangefinder 11 itself, let's say e. The working principle of the laser rangefinder 11 is the same as that of the laser rangefinder 2 13. When the distance between the two sets of laser rangefinders 11 and the front and rear ends of the stainless steel plate is greater than or less than e, it means that the position of the stainless steel plate has shifted. The operator can measure the thickness of the laser rangefinder 3 14, the width of the stainless steel plate, and the diameter of the limiting roller 48 in advance.If we set these values ​​as f, g, and h, then measure the distance between the front end of the laser rangefinder 314 and the rear end of the front upright plate 46. If we set this value as i, the working principle of the laser rangefinder 314 is the same as that of the laser rangefinder 11. Then, set the distance between the outer arc surface of the limiting roller 48 and the diameter of the stainless steel plate as j, where j = (f + i) ÷ 2 - g ÷ 2 - h. Then, through the control of the controller 2, the servo motor 7 starts running. The output shaft of the servo motor 7 drives the worm 5 to rotate. During the rotation of the worm 5, it will drive the worm wheel 6 to rotate through meshing. The worm wheel 6 will drive the gear 42 to rotate through the mounting rod 41. During the rotation of the gear 42, it will drive the rack plate 45 to move through meshing. Components such as wheel 42 and rack plate 45 are located within a closed cavity 3. Cavity 3 prevents direct contact between these components and the external environment. The two sets of rack plates 45 move in opposite directions. The rack plate 45 drives the vertical plate 46 to move via the fixed plate 44. The vertical plate 46 then drives the limiting roller 48 to move via the fixed seat 47. During this process, the distance between the limiting roller 48 and the stainless steel plate gradually decreases. When the limiting roller 48 contacts the stainless steel plate, it moves the stainless steel plate. When the distance between the limiting roller 48 and the stainless steel plate equals j, the stainless steel plate is returned to its correct position, thus achieving the correction of the stainless steel plate's alignment.

[0030] It is worth noting that the controller 2 disclosed in the above embodiments can be an AT89C51, the servo motor 7 can be an ECMA-C20604RS, the electric actuator 12 can be an L12-100-50-6-S, and the laser rangefinder 11, laser rangefinder 2 13, and laser rangefinder 3 14 can be HMLDM-UD100A. The controller 2 controls the servo motor 7, electric actuator 12, laser rangefinder 11, laser rangefinder 2 13, and laser rangefinder 3 14, and the operation of these components all adopt methods commonly used in the prior art.

[0031] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. An automatic correction mechanism for a stainless steel plate rolling mill, comprising a mounting frame (1), a cavity (3) provided on the right side inside the mounting frame (1), and a laser rangefinder (11) provided on the left side of the lower end of the mounting frame (1), characterized in that: It also includes a correction component (4); Correction assembly (4): It includes mounting rod (41), gear (42), rack plate (45) and limiting roller (48). The mounting rod (41) is rotatably connected to the middle of the bottom wall of cavity (3). Gear (42) is provided on the lower side of the outer arc surface of the mounting rod (41). Rack plates (45) are provided on the left and right sides inside the cavity (3). Both sets of rack plates (45) are meshed with gear (42). Limiting roller (48) is provided on the right side of the lower end of the mounting frame (1).

2. The automatic deviation correction mechanism for a stainless steel plate rolling mill according to claim 1, characterized in that: The front end of the mounting bracket (1) is provided with a controller (2), the input end of the controller (2) is electrically connected to an external power supply, and the laser rangefinder (11) is bidirectionally electrically connected to the controller (2).

3. The automatic deviation correction mechanism for a stainless steel plate rolling mill according to claim 2, characterized in that: The correction assembly (4) further includes an adjustment plate (43), a fixed plate (44), a vertical plate (46), and a fixed seat (47). The adjustment plate (43) is slidably connected to the adjustment grooves provided in the middle of the front and rear walls of the cavity (3). The two sets of adjustment plates (43) are provided with fixed plates (44) on their opposite inner ends. The right side of the front end of the rear fixed plate (44) and the left side of the rear end of the front fixed plate (44) are respectively provided with rack plates (45). The two sets of adjustment plates (43) are provided with vertical plates (46) on their opposite outer ends. The vertical plates (46) are slidably connected to the guide grooves provided on the right side of the bottom wall of the mounting frame (1). The lower side of the opposite inner ends of the two sets of vertical plates (46) is provided with a fixed seat (47). A set of limiting rollers (48) is rotatably connected between the opposite inner sides of the two vertically adjacent sets of fixed seats (47).

4. The automatic deviation correction mechanism for a stainless steel plate rolling mill according to claim 3, characterized in that: It also includes a laser rangefinder three (14), which is located on the upper side of the front end of the rear upright plate (46). The laser rangefinder three (14) corresponds to the front and rear positions of the front upright plate (46). The laser rangefinder three (14) is bidirectionally electrically connected to the controller (2).

5. The automatic deviation correction mechanism for a stainless steel plate rolling mill according to claim 2, characterized in that: A worm gear (5) is rotatably connected to the upper side of the right wall of the cavity (3). A worm wheel (6) is provided on the upper side of the outer arc surface of the mounting rod (41). The worm gear (5) and the worm wheel (6) are meshed and connected. A servo motor (7) is provided on the rear side of the right end of the mounting bracket (1). The left end of the output shaft of the servo motor (7) is fixedly connected to the right end of the worm gear (5). The input end of the servo motor (7) is electrically connected to the output end of the controller (2).

6. The automatic deviation correction mechanism for a stainless steel plate rolling mill according to claim 2, characterized in that: The mounting frame (1) has two sets of fixed rods (8) on the left side. The two sets of fixed rods (8) are slidably connected to the sliding holes corresponding to the upper end of the connecting plate (9). The mounting frame (1) has two sets of connecting arms (10) slidably connected in the sliding grooves opened on the left side of the bottom wall. The upper ends of the two sets of connecting arms (10) are fixedly connected to the lower end of the connecting plate (9). The lower side of the inner side of the two sets of connecting arms (10) is provided with a laser rangefinder (11). The middle part of the top wall of the mounting frame (1) is provided with an electric push rod (12). The lower end of the telescopic end of the electric push rod (12) is fixedly connected to the upper end of the connecting plate (9). The input end of the electric push rod (12) is electrically connected to the output end of the controller (2).

7. The automatic deviation correction mechanism for a stainless steel plate rolling mill according to claim 6, characterized in that: The mounting bracket (1) has a laser rangefinder (13) installed on the front side of the top wall. The laser rangefinder (13) is located on the rear side of the outer arc surface of the fixed rod (8) and the front side of the electric push rod (12). The laser rangefinder (13) corresponds to the upper and lower positions of the connecting plate (9). The laser rangefinder (13) is bidirectionally electrically connected to the controller (2).

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