An electric vehicle parts comprehensive test bench

Abstract

The utility model discloses a kind of electric vehicle parts comprehensive test benches, including limiting frame and steep slope, steep slope is installed on the outer wall of limiting frame, the outside of limiting frame is provided with moving plate, the top of moving plate is installed with driving frame, the outside of driving frame above moving plate is provided with driving plate, the top of driving plate is installed with lifting frame, the top of limiting frame below moving plate is symmetrically installed with limiting rail, the bottom end of moving plate in the limiting rail side is symmetrically installed with sliding frame, the inside of limiting frame is installed with rack, the outside of limiting frame in the rack side is provided with gear. The utility model not only realizes that test bench is conveniently multi-position moving test to electric vehicle, facilitates different parts test equipment to electric vehicle parts to carry out convenient comprehensive test, and facilitates the height of adjustment to electric vehicle parts test, improves the convenience of electric vehicle parts test.

Description

Technical Field

[0001] This utility model relates to the field of test bench technology, specifically to a comprehensive test bench for electric vehicle components. Background Technology

[0002] Electric vehicles are vehicles powered by onboard electricity, driven by electric motors, and that meet all road traffic and safety regulations. Due to their relatively smaller environmental impact compared to traditional vehicles, their prospects are widely considered promising. Automotive parts are the various units that make up a car and products that serve the vehicle; in the production of electric vehicles, test benches are needed for continuous testing and adjustments.

[0003] For example, the new energy vehicle test bench disclosed in the authorization announcement number CN220729651U includes a first support and several second supports arranged on the side of the first support. The first support is equipped with a support seat for carrying the new energy vehicle, and the support seat is equipped with a conveyor for driving the new energy vehicle to move horizontally. Several equipment support plates distributed vertically are fixedly arranged on the second supports. During the horizontal movement of the new energy vehicle, it can move to the equipment support plate. The equipment support plate is equipped with a test device for testing the new energy vehicle. Although it is realized, it can effectively save on-site space and improve testing efficiency.

[0004] However, the existing test benches of this type are not conducive to convenient multi-position movement testing of electric vehicles, nor to convenient comprehensive testing of electric vehicle parts by different component testing equipment, which affects the convenience of testing electric vehicle parts and thus seriously affects the ease of use of the test bench; thereby greatly affecting the safety of the test bench during use; and thus causing great inconvenience to users. Utility Model Content

[0005] The purpose of this utility model is to provide a comprehensive test bench for electric vehicle components, so as to solve the problems mentioned in the background art, which are that the test bench is not convenient for multi-position movement testing of electric vehicles, and is not convenient for different component testing equipment to conduct comprehensive testing of electric vehicle components, thus affecting the convenience of testing electric vehicle components.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a comprehensive testing bench for electric vehicle components, comprising a limiting frame and a steep slope. A steep slope is installed on the outer wall of the limiting frame. A movable plate is provided on the outside of the limiting frame. A drive frame is installed at the top of the movable plate. A drive plate is provided on the outside of the drive frame above the movable plate. A lifting frame is installed at the top of the drive plate. Limiting rails are symmetrically installed at the top of the limiting frame below the movable plate. Sliding frames are symmetrically installed at the bottom of the movable plate on one side of the limiting rails. A rack is installed inside the limiting frame. A gear is provided on the outside of the limiting frame on one side of the rack. A first servo motor is installed at the top of the movable plate above the gear, and the output end of the first servo motor is connected to the gear. The wheels are connected, and the gears mesh with the rack. Multiple sets of equally spaced limiting shafts are installed on the outer wall of the sliding frame. Limiting wheels are movably fitted onto the surface of each limiting shaft, and the limiting wheels are slidably connected to the limiting rails. Limiting seats are symmetrically installed at the top of the drive frame. A slide rail is installed at the top of each limiting seat, and a slider is slidably installed at the top of each slide rail, connecting to the drive plate. A stepper motor is installed at the top of the drive frame below the drive plate. A transverse threaded rod is installed at the output end of the stepper motor. A transverse threaded sleeve is fitted onto the surface of the transverse threaded rod, connecting to the drive plate. A shaft seat is movably fitted onto the surface of the transverse threaded rod away from the stepper motor, connecting to the drive frame.

[0007] Preferably, a second servo motor is symmetrically installed at the top of the lifting frame, and each of the output ends of the second servo motor is equipped with a longitudinal threaded rod, which extends into the interior of the lifting frame, and the lifting frame is movably connected to the longitudinal threaded rod.

[0008] Preferably, the surface of each longitudinal threaded rod is fitted with a longitudinal threaded sleeve, and the surface of each longitudinal threaded sleeve is fitted with a lifting frame, and the lifting frame is slidably connected to the lifting frame.

[0009] Preferably, lifting arms are symmetrically and movably installed on the outer wall of the lifting frame, and a flipping shaft is movably installed on the outer wall of the lifting arm near the lifting frame, and the longitudinal threaded sleeve is movably connected to the lifting arm through the flipping shaft.

[0010] Preferably, slide rods are symmetrically installed on the outer wall of the lifting frame on one side of the lifting frame, and sliding sleeves are slidably fitted on the surface of each slide rod, and the sliding sleeves are connected to the lifting frame.

[0011] Preferably, fixing bolts are installed on the outer wall of the lifting arm on one side of the flip shaft, and the fixing bolts extend to the surface of the flip shaft. A first threaded sleeve is installed on the outer wall of the lifting arm on the side away from the fixing bolts.

[0012] Preferably, a first threaded rod is movably installed inside the first threaded sleeve, and the first threaded rod extends to the outside of the first threaded sleeve and is threadedly connected to the first threaded sleeve. A handwheel is installed at the bottom end of each first threaded rod, and a drive disc is installed at the top end of each first threaded rod on the side away from the handwheel.

[0013] Preferably, a control panel is installed on the outer wall of the steep slope, and the output end of the control panel is electrically connected to the input ends of the first servo motor, the stepper motor, and the second servo motor.

[0014] Compared with the prior art, the beneficial effects of this utility model are: the test bench not only realizes convenient multi-position movement testing of electric vehicles, facilitating comprehensive testing of electric vehicle parts by different parts testing equipment, but also facilitates adjustment of the testing height of electric vehicle parts, thus improving the convenience of testing electric vehicle parts.

[0015] (1) The first servo motor drives the gear to rotate, the gear drives the moving plate to move, the moving plate drives the drive frame, drive plate, lifting frame and electric vehicle to the side of the equipment that needs to be tested for the parts, the stepper motor drives the transverse thread rod to rotate, the transverse thread rod drives the transverse thread sleeve to move, the transverse thread sleeve drives the drive plate to move, so as to facilitate the drive plate to drive the lifting frame and electric vehicle to the appropriate position, so as to facilitate the connection of the parts testing equipment and the electric vehicle. When a set of parts testing equipment has been tested, the operation control panel opens the stepper motor in reverse, so as to facilitate the stepper motor to drive the drive plate and electric vehicle to move back to the initial position, so as to facilitate the first servo motor to drive the electric vehicle to the side of another component parts testing equipment, so as to facilitate the parts testing equipment to test different parts of the electric vehicle. Repeat the above operation to facilitate the comprehensive testing of the parts of the electric vehicle. When all the parts of the electric vehicle have been tested, the operation control panel opens the first servo motor in reverse, so as to facilitate the electric vehicle to move to the side of the steep slope. By driving the electric vehicle to move through the steep slope to the outside, the test bench realizes the convenient multi-position movement test of the electric vehicle, which facilitates the convenient comprehensive testing of the electric vehicle parts by different parts testing equipment, and improves the efficiency of testing electric vehicle parts.

[0016] (2) Multiple sets of lifting arms are manually rotated to facilitate the rotation of the lifting arms around the flip shaft to the bottom of the electric vehicle. Multiple sets of fixing bolts are manually rotated to facilitate the change of the fixing bolts from the loose state to the locked state of the flip shaft, and the change of the flip shaft from the loose state to the locked state of the lifting arms. Multiple sets of handwheels are manually rotated to facilitate the handwheels driving the first threaded rod to rotate, which facilitates the first threaded sleeve driving the first threaded rod to move. The first threaded rod drives the drive disc to move, which facilitates the movement of multiple sets of drive discs to the surface of the electric vehicle. The second servo motor drives the longitudinal threaded rod to rotate, which drives the longitudinal threaded sleeve to move. The longitudinal threaded sleeve drives the lifting frame to move, which facilitates the lifting frame driving the lifting arm to move via the flip shaft. The lifting arm drives the electric vehicle to move via multiple sets of drive discs, which facilitates the adjustment of the height of the electric vehicle parts for testing. This realizes the convenient adjustment of the height of the electric vehicle by the test bench, which facilitates the adjustment of the height of the electric vehicle parts for testing and improves the convenience of testing the electric vehicle parts. Attached Figure Description

[0017] Figure 1 This is a front view structural diagram of the present utility model;

[0018] Figure 2 This is a three-dimensional structural diagram of the present invention;

[0019] Figure 3 This is a three-dimensional structural diagram of the limiting wheel of this utility model;

[0020] Figure 4 This is a three-dimensional structural diagram of the lifting frame of this utility model;

[0021] Figure 5 This is a three-dimensional structural diagram of the gear of this utility model;

[0022] Figure 6 This is a three-dimensional structural diagram of the drive frame of this utility model;

[0023] Figure 7 This is a three-dimensional structural diagram of the lifting arm of this utility model.

[0024] In the diagram: 1. Limiting frame; 2. Steep slope; 3. Moving plate; 4. Drive frame; 5. Drive plate; 6. Lifting frame; 7. Sliding frame; 8. Limiting rail; 9. Rack; 10. First servo motor; 11. Gear; 12. Limiting shaft; 13. Limiting wheel; 14. Limiting seat; 15. Slide rail; 16. Slider; 17. Stepper motor; 18. Horizontal threaded rod; 19. Horizontal threaded sleeve; 20. Shaft seat; 21. Second servo motor; 22. Longitudinal threaded rod; 23. Lifting frame; 24. Longitudinal threaded sleeve; 25. Tilting shaft; 26. Lifting arm; 27. Slide rod; 28. Slide sleeve; 29. ​​Fixing bolt; 30. Handwheel; 31. First threaded sleeve; 32. Drive plate; 33. First threaded rod; 34. Control panel. Detailed Implementation

[0025] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0026] Please see Figure 1-7 This utility model provides an embodiment of an electric vehicle component comprehensive testing bench, including a limiting frame 1 and a steep ramp 2. The steep ramp 2 is installed on the outer wall of the limiting frame 1. A movable plate 3 is provided on the outside of the limiting frame 1. A drive frame 4 is installed on the top of the movable plate 3. A drive plate 5 is provided on the outside of the drive frame 4 above the movable plate 3. A lifting frame 6 is installed on the top of the drive plate 5. Limiting rails 8 are symmetrically installed on the top of the limiting frame 1 below the movable plate 3. Sliding frames 7 are symmetrically installed on the bottom of the movable plate 3 on one side of the limiting rails 8. A rack 9 is installed inside the limiting frame 1. A gear 11 is provided on the outside of the limiting frame 1 on one side of the rack 9. A first servo motor 10 is installed on the top of the movable plate 3 above the gear 11, and the output end of the first servo motor 10 is connected to the gear 11. The gear 11 and the gear 11 are connected to the gear 11. The strips 9 mesh with each other. Multiple sets of equidistant limit shafts 12 are installed on the outer wall of the sliding frame 7. Limit wheels 13 are movably mounted on the surface of each limit shaft 12, and the limit wheels 13 are slidably connected to the limit rails 8. Limit seats 14 are symmetrically installed on the top of the drive frame 4. Slide rails 15 are installed on the top of each limit seat 14. Slider 16 is slidably mounted on the top of each slide rail 15, and the slider 16 is connected to the drive plate 5. Stepper motor 17 is installed on the top of the drive frame 4 below the drive plate 5. A transverse threaded rod 18 is installed on the output end of the stepper motor 17. A transverse threaded sleeve 19 is fitted on the surface of the transverse threaded rod 18, and the transverse threaded sleeve 19 is connected to the drive plate 5. A shaft seat 20 is movably fitted on the surface of the transverse threaded rod 18 away from the stepper motor 17, and the shaft seat 20 is connected to the drive frame 4.

[0027] The device includes a limiting frame 1 and a steep ramp 2. The steep ramp 2 is installed on the outer wall of the limiting frame 1. A movable plate 3 is installed on the outside of the limiting frame 1. A drive frame 4 is installed on the top of the movable plate 3. A drive plate 5 is installed on the outside of the drive frame 4 above the movable plate 3. A lifting frame 6 is installed on the top of the drive plate 5. Limiting rails 8 are symmetrically installed on the top of the limiting frame 1 below the movable plate 3. Sliding frames 7 are symmetrically installed on the bottom of the movable plate 3 on one side of the limiting rails 8. A rack 9 is installed inside the limiting frame 1. A gear 11 is installed on the outside of the limiting frame 1 on one side of the rack 9. A first servo motor 10 is installed on the top of the movable plate 3 above the gear 11, and the output end of the first servo motor 10 is connected to the gear 11. The gear 11 meshes with the rack 9. The outer wall of the sliding frame 7 is... Multiple sets of equidistant limiting shafts 12 are installed, and limiting wheels 13 are movably mounted on the surface of each limiting shaft 12. The limiting wheels 13 are slidably connected to the limiting rails 8. Limiting seats 14 are symmetrically installed on the top of the drive frame 4. Slide rails 15 are installed on the top of each limiting seat 14. Sliding sliders 16 are slidably mounted on the top of each slide rail 15. The sliders 16 are connected to the drive plate 5. A stepper motor 17 is installed on the top of the drive frame 4 below the drive plate 5. A transverse threaded rod 18 is installed on the output end of the stepper motor 17. A transverse threaded sleeve 19 is fitted on the surface of the transverse threaded rod 18. The transverse threaded sleeve 19 is connected to the drive plate 5. A shaft seat 20 is movably fitted on the surface of the transverse threaded rod 18 away from the stepper motor 17. The shaft seat 20 is connected to the drive frame 4.

[0028] A second servo motor 21 is symmetrically mounted on the top of the lifting frame 6. Each output end of the second servo motor 21 is equipped with a longitudinal threaded rod 22, which extends into the interior of the lifting frame 6. The lifting frame 6 is movably connected to the longitudinal threaded rod 22. A longitudinal threaded sleeve 24 is fitted onto the surface of each longitudinal threaded rod 22. A lifting frame 23 is fitted onto the surface of each longitudinal threaded sleeve 24, and the lifting frame 23 is slidably connected to the lifting frame 6. Lifting arms 26 are symmetrically and movably mounted on the outer wall of each lifting frame 23. A tilting shaft 25 is movably mounted on the outer wall of each lifting arm 26 near the lifting frame 23, and the longitudinal threaded sleeve 24 is movably connected to the lifting arm 26 via the tilting shaft 25. Sliding rods 27 are symmetrically mounted on the outer wall of the lifting frame 6 on one side of the lifting frame 23. Sliding sleeves 28 are slidably fitted onto the surface of each sliding rod 27. The sleeve 28 is connected to the lifting frame 23. Fixing bolts 29 are installed on the outer wall of the lifting arm 26 on one side of the flip shaft 25, and the fixing bolts 29 extend to the surface of the flip shaft 25. The outer wall of the lifting arm 26 away from the fixing bolts 29 is equipped with a first threaded sleeve 31. The first threaded rod 33 is movably installed inside the first threaded sleeve 31, and the first threaded rod 33 extends to the outside of the first threaded sleeve 31. The first threaded rod 33 is threadedly connected to the first threaded sleeve 31. A handwheel 30 is installed at the bottom of the first threaded rod 33. A drive disk 32 is installed at the top of the first threaded rod 33 away from the handwheel 30. A control panel 34 is installed on the outer wall of the steep slope 2. The output end of the control panel 34 is electrically connected to the input end of the first servo motor 10, the stepper motor 17, and the second servo motor 21.

[0029] When the height for testing electric vehicle parts needs to be adjusted, multiple sets of lifting arms 26 are manually rotated to facilitate their rotation around the tilting shaft 25 to the bottom of the electric vehicle. Multiple sets of fixing bolts 29 are manually rotated to switch the bolts from a loose to a locked state relative to the tilting shaft 25, and vice versa. Multiple sets of handwheels 30 are manually rotated to drive the first threaded rod 33. With the lifting arms 26 limiting the first threaded sleeve 31, and the threaded connection between the first threaded sleeve 31 and the first threaded rod 33, the first threaded sleeve 31 drives the first threaded rod 33 to move. The first threaded rod 33 then drives the drive disc 32 to move, allowing the multiple drive discs 32 to move to the surface of the electric vehicle. The control panel 34 activates two sets of second servo motors 21. Supported by the lifting frame 6, the second servo motors 21 drive the longitudinal threaded rod 22 to rotate. With the threaded connection between the longitudinal threaded rod 22 and the longitudinal threaded sleeve 24, the longitudinal threaded rod 22 drives the longitudinal threaded sleeve 24 to move, and the longitudinal threaded sleeve 24 drives the lifting frame 23 to move. The sliding sleeve 28 slides on the surface of the sliding rod 27 to provide sliding support for the lifting frame 23, so that the lifting frame 23 can drive the lifting arm 26 to move via the flip shaft 25. The lifting arm 26 drives the electric vehicle to move via multiple sets of drive discs 32, so as to facilitate the adjustment of the height of the electric vehicle parts test. This realizes the convenient adjustment of the height of the electric vehicle by the test bench, which facilitates the adjustment of the height of the electric vehicle parts test and improves the convenience of testing the electric vehicle parts.

[0030] In this embodiment, the first servo motor 10 drives the gear 11 to rotate, the gear 11 drives the moving plate 3 to move, the moving plate 3 drives the drive frame 4, drive plate 5, lifting frame 6, and electric vehicle to the side of the equipment where the parts need to be tested. The stepper motor 17 drives the transverse threaded rod 18 to rotate, the transverse threaded rod 18 drives the transverse threaded sleeve 19 to move, and the transverse threaded sleeve 19 drives the drive plate 5 to move, so that the drive plate 5 can drive the lifting frame 6 and electric vehicle to a suitable position, facilitating the connection between the parts testing equipment and the electric vehicle. After a set of parts testing equipment has completed testing, the control panel 34 reverses the operation to open the stepper motor 17, so that the stepper motor 17 can drive the drive plate 5 and electric vehicle back to the initial position, so that the first servo motor 10 can drive the electric vehicle to the side of another set of parts testing equipment, facilitating the parts testing equipment to test different parts of the electric vehicle. The above operation is repeated to facilitate comprehensive testing of the parts of the electric vehicle. After all the parts of the electric vehicle have been tested, the control panel 34 reverses the operation to open the first servo motor 10. To facilitate the movement of the electric vehicle to one side of the steep slope 2, the electric vehicle is driven across the steep slope 2 to the outside. Multiple sets of lifting arms 26 are manually rotated to allow them to rotate around the tilting shaft 25 to the bottom of the electric vehicle. Multiple sets of fixing bolts 29 are manually rotated to change the position of the fixing bolts 29 relative to the tilting shaft 25 from a loose state to a locked state, and vice versa. Multiple sets of handwheels 30 are manually rotated to allow the handwheels 30 to drive the first threaded rod 33 to rotate, thereby allowing the first threaded sleeve 31 to... The first threaded rod 33 moves, which in turn moves the drive plate 32, facilitating the movement of multiple drive plates 32 onto the surface of the electric vehicle. The second servo motor 21 drives the longitudinal threaded rod 22 to rotate, which in turn moves the longitudinal threaded sleeve 24, which in turn moves the lifting frame 23, facilitating the movement of the lifting arm 26 via the flip shaft 25. The lifting arm 26 then moves the electric vehicle via multiple drive plates 32, allowing for easy adjustment of the testing height for the electric vehicle parts, thus completing the use of the test bench.

[0031] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any indirect modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A comprehensive testing bench for electric vehicle components, characterized in that: The device includes a limiting frame (1) and a steep ramp (2). The steep ramp (2) is installed on the outer wall of the limiting frame (1). A movable plate (3) is provided on the outside of the limiting frame (1). A drive frame (4) is installed on the top of the movable plate (3). A drive plate (5) is provided on the outside of the drive frame (4) above the movable plate (3). A lifting frame (6) is installed on the top of the drive plate (5). Limiting rails (8) are symmetrically installed on the top of the limiting frame (1) below the movable plate (3). Sliding brackets (7) are symmetrically installed at the bottom of the moving plate (3) on one side of the limiting rail (8). A rack (9) is installed inside the limiting bracket (1). A gear (11) is provided on the outside of the limiting bracket (1) on one side of the rack (9). A first servo motor (10) is installed at the top of the moving plate (3) above the gear (11). The output end of the first servo motor (10) is connected to the gear (11), and the gear (11) meshes with the rack (9). (7) The outer wall of each component is equipped with multiple sets of equally spaced limiting shafts (12). Each limiting shaft (12) has a limiting wheel (13) movably mounted on its surface. The limiting wheel (13) is slidably connected to the limiting rail (8). The top of the drive frame (4) is symmetrically equipped with limiting seats (14). Each limiting seat (14) has a slide rail (15) mounted on its top. Each slide rail (15) has a slider (16) slidably mounted on its top. The slider (16) is connected to the drive plate (5). A stepper motor (17) is mounted on the top of the drive frame (4) below the drive plate (5). A transverse threaded rod (18) is mounted on the output end of the stepper motor (17). A transverse threaded sleeve (19) is fitted on the surface of the transverse threaded rod (18), and the transverse threaded sleeve (19) is connected to the drive plate (5). A bearing seat (20) is movably fitted on the surface of the transverse threaded rod (18) away from the stepper motor (17), and the bearing seat (20) is connected to the drive frame (4).

2. The comprehensive testing bench for electric vehicle components according to claim 1, characterized in that: The top of the lifting frame (6) is symmetrically equipped with a second servo motor (21). The output end of the second servo motor (21) is equipped with a longitudinal threaded rod (22), and the longitudinal threaded rod (22) extends into the interior of the lifting frame (6). The lifting frame (6) is movably connected to the longitudinal threaded rod (22).

3. The comprehensive testing bench for electric vehicle components according to claim 2, characterized in that: The surface of each longitudinal threaded rod (22) is fitted with a longitudinal threaded sleeve (24), and the surface of each longitudinal threaded sleeve (24) is fitted with a lifting frame (23), and the lifting frame (23) is slidably connected to the lifting frame (6).

4. The comprehensive testing bench for electric vehicle components according to claim 3, characterized in that: Lifting arms (26) are symmetrically and movably installed on the outer wall of the lifting frame (23). A flipping shaft (25) is movably installed on the outer wall of the lifting arm (26) near the lifting frame (23). The longitudinal threaded sleeve (24) is movably connected to the lifting arm (26) through the flipping shaft (25).

5. The comprehensive testing bench for electric vehicle components according to claim 3, characterized in that: Slide rods (27) are symmetrically installed on the outer wall of the lifting frame (6) on one side of the lifting frame (23). Slide sleeves (28) are slidably fitted on the surface of the slide rods (27), and the slide sleeves (28) are connected to the lifting frame (23).

6. The comprehensive testing bench for electric vehicle components according to claim 4, characterized in that: Fixing bolts (29) are installed on the outer wall of the lifting arm (26) on one side of the flipping shaft (25), and the fixing bolts (29) extend to the surface of the flipping shaft (25). A first threaded sleeve (31) is installed on the outer wall of the lifting arm (26) on the side away from the fixing bolts (29).

7. A comprehensive testing bench for electric vehicle components according to claim 6, characterized in that: The first threaded sleeve (31) is movably installed with a first threaded rod (33) inside, and the first threaded rod (33) extends to the outside of the first threaded sleeve (31). The first threaded rod (33) is threadedly connected to the first threaded sleeve (31). A handwheel (30) is installed at the bottom end of the first threaded rod (33), and a drive disc (32) is installed at the top end of the first threaded rod (33) on the side away from the handwheel (30).

8. The comprehensive testing bench for electric vehicle components according to claim 1, characterized in that: A control panel (34) is installed on the outer wall of the steep slope (2). The output end of the control panel (34) is electrically connected to the input end of the first servo motor (10), the stepper motor (17), and the second servo motor (21).

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