A motor rotor welding fixture using VA controller

Abstract

The present invention belongs to the technical field of motor production equipment, and in particular, is a motor rotor welding fixture using a VA controller, comprising a base plate, an electric slide rail and a box cover are fixed on the top of the base plate, the electric slide rail extends from the open end of the box cover, a platform is fixed on the top of the slider of the electric slide rail, two groups of clamping components for fixing the motor rotor are installed on the platform, arches are provided at both ends of the platform, the arches are fixedly connected to the platform through a cross bar, a socket is provided at the open end of the top of the box cover, a sealing plate is inserted in the socket, and a smoke exhaust component is provided at the smoke exhaust port at the top of the box cover. In the present invention, when the slider drives the platform in and out of the box cover, the bottom end of the arch will enter the bottom of the sealing plate, and then push the sealing plate upward, thereby automatically opening the sealing plate, and then the sealing plate is automatically closed due to gravity, so that the smoke generated during the welding process will be sealed in the box cover and discharged through the smoke exhaust component, so that the smoke will not escape from the box cover.

Description

Technical Field

[0001] The invention relates to the technical field of motor production equipment, and in particular to a motor rotor welding fixture using a VA controller. Background Art

[0002] During the manufacturing process of the motor rotor, it is generally necessary to weld the rotor seat and the rotor steel cover at both ends of the rotor.

[0003] In order to solve the problem that "the positioning of the welding rotor seat and the rotor steel cover is manually operated", a Chinese patent with publication number CN112846501B discloses a motor rotor welding fixture, including a bottom plate, a driving device is fixedly arranged on the bottom plate, a welding seat is arranged on the piston rod of the driving device, and the side wall of one end of the welding seat is fixedly connected to the piston rod of the driving device, a welding area is arranged on the top surface of the other end of the welding seat, the welding area includes a No. 1 station area and a No. 2 station area arranged in parallel, and welding positioning devices are arranged in the No. 1 station area and the No. 2 station area, and a protective cover is arranged on the outside of the welding seat. It is a U-shaped opening, and both ends of the U-shaped opening of the protective cover are fixedly set on the top surface of the bottom plate. The welding seat reciprocates between the inside and outside of the U-shaped opening of the protective cover under the action of the driving device. A clamping device is arranged in the U-shaped opening of the protective cover. The clamping device includes a clamping cylinder, which is fixedly set on the bottom plate on one side of the welding seat. A clamping assembly is fixedly set on the piston rod of the clamping cylinder. When the welding seat moves into the U-shaped opening of the protective cover, the clamping assembly corresponds to the position of the welding positioning device in the No. 1 workstation area. Two feed slots corresponding to the welding positioning devices are also arranged on the top of the U-shaped opening of the protective cover. Although the existing technical problems have been solved, the following problems still exist:

[0004] In this technical solution, although a protective cover is provided to concentrate the smoke generated during welding, the smoke will be dissipated into the external environment through the feed trough and inhaled by the workers, so corresponding improvements are made to address this problem. Summary of the invention

[0005] Based on the technical problems existing in the prior art, the present invention proposes a motor rotor welding fixture using a VA controller.

[0006] The present invention proposes a motor rotor welding fixture using a VA controller, comprising a base plate, an electric slide rail and a box cover are fixed on the top of the base plate, the electric slide rail extends from the open end of the box cover, a platform is fixed on the top of the slider of the electric slide rail, two groups of clamping components for fixing the motor rotor are installed on the platform, arch frames are provided at both ends of the platform, the arch frames are fixedly connected to the platform through a cross bar, a socket is provided at the open end of the top of the box cover, a sealing plate is inserted in the socket, the bottom end of the sealing plate is a triangular structure, and a smoke exhaust component is provided at the smoke exhaust port on the top of the box cover, when the slider drives the platform in and out of the box cover, the bottom end of the arch frame will enter the bottom of the sealing plate, and then the sealing plate will be pushed up along the socket, thereby automatically opening the sealing plate, and then the sealing plate will automatically close due to gravity, so that the smoke generated during the welding process will be sealed in the box cover and discharged through the smoke exhaust component, so that the smoke will not escape from the box cover.

[0007] Preferably, the clamping assembly includes a motor fixed to the bottom of the platform, the motor output shaft passes through the platform and is connected to the base, a center rod is fixed in the circular groove on the top of the base, a pair of L-shaped positioning rods are fixed to the circular outer wall of the base, a horizontal clamp is inserted at the top of the positioning rod, a guide column fixed to the positioning rod is arranged below the clamp, the guide column is sleeved with a guide sleeve fixed to the clamp, the guide column is sleeved with a spring, the two ends of the spring are respectively fixedly connected to the guide sleeve and the guide column, the rotor is placed in the circular groove so that the center rod passes through the middle of the rotor, the rotor will push the positioning rods on both sides outward, and then under the elastic force of the spring, the positioning rods clamp the rotor, and then the rotor seat or rotor steel cover to be welded is placed on the corresponding rotor top, the motor can drive the rotor to rotate, thereby adjusting the welding position.

[0008] Preferably, the smoke exhaust assembly includes a hood fixed above the smoke exhaust port, an exhaust pipe is provided at the top of the hood, and a smoke exhaust structure is provided inside the hood, which can be connected to the exhaust pipe through a pipeline, so that the smoke in the box cover can be discharged from the exhaust pipe through the smoke exhaust structure.

[0009] Preferably, the smoke exhaust structure includes an exhaust fan, which is fixed in the smoke exhaust port, a button is fixed on the top of the box cover, and a pressure block that can be pressed on the button is fixed on the side of the sealing plate. When the sealing plate is in a closed state, the pressure block will be pressed on the button, and the exhaust fan will be in a working state to discharge the smoke in the box cover. When the sealing plate moves upward and opens, the pressure block will be separated from the button, and the button will be reset, and the exhaust fan will be powered off and stop working.

[0010] Preferably, the smoke exhaust structure includes fan blades, a horizontal plate is fixed inside the hood, the bottom of the horizontal plate is rotatably connected to a main shaft, the fan blades are fixed to the bottom end of the main shaft, and the main shaft is connected to a driving structure. When the main shaft is driven to rotate by the driving structure, the main shaft will synchronously drive the fan blades to rotate, and then the smoke in the box cover can be discharged through the fan blades.

[0011] Preferably, the driving structure includes a first shaft column that passes through the front end of the wind cover, and the adjacent ends of the first shaft column and the main shaft are fixedly sleeved with bevel gears, and the two bevel gears are meshingly connected. A bracket is fixed on the top of the box cover, and a second shaft column is rotatably connected to the bracket, and the first shaft column is also rotatably connected to the bracket. The front ends of the first shaft column and the second shaft column are fixedly sleeved with pulleys, and the rear end of the second shaft column is connected to the second shaft column by a belt through a belt. A gear ring is fixedly sleeved, and a rack meshing with the gear ring is fixed on the side of the closing plate, and the rack passes through the box cover, and the closing plate moves upward and synchronously drives the rack to move, and then the rack meshes to drive the gear ring to drive the second shaft column to rotate, and then the first shaft column is driven to rotate through the transmission cooperation of the pulley and the belt, and then the first shaft column drives the main shaft to rotate through the meshing transmission of the two bevel gears.

[0012] Preferably, the driving structure includes a twisted rod located in the exhaust pipe, the center positions of the main shaft and the fan blades are provided with through holes, a ring is fixed in the main shaft, a convex ball is fixed on the circumferential inner wall of the ring, the twisted rod passes through the middle of the ring, and a transmission fit is formed between the convex ball and the twisted rod, a support rod is fixed on the side of the sealing plate, the support rod is fixed on the top of the twisted rod, a cover plate is sleeved on the twisted rod, the cover plate is fixed in the exhaust pipe, and an exhaust structure is provided on the exhaust pipe, when the sealing plate moves upward, the support rod and the twisted rod are synchronously driven to move, and then the twisted rod and the convex ball cooperate to make the ring rotate, and the ring will synchronously drive the main shaft to rotate.

[0013] Preferably, the exhaust structure includes an air distribution pipe arranged on the side of the exhaust pipe, which can be connected to the air distribution pipe through a pipeline, so that the smoke in the box cover can be discharged from the air distribution pipe through the fan blades.

[0014] Preferably, mounting plates are fixed to the inner walls on both sides of the box cover, an electric push rod is fixed to the bottom of the mounting plate, and the output shaft of the electric push rod is connected to a pressure plate. Before the platform enters the interior of the box cover for welding, the output shaft of the electric push rod drives the pressure plate to move downward so that the pressure plate is pressed on the rotor seat or rotor steel cover to be welded, so that it can be fixed, and then the welding device can perform welding work.

[0015] Compared with the prior art, the present invention provides a motor rotor welding fixture using a VA controller, which has the following beneficial effects:

[0016] 1. A motor rotor welding fixture using a VA controller, by setting a sealing plate, when the slider drives the platform in and out of the box cover, the bottom end of the arch frame will enter the bottom of the sealing plate, and then push the sealing plate upward along the socket, so that the sealing plate is automatically opened, and then the sealing plate is automatically closed due to gravity, so that the smoke generated during the welding process will be sealed in the box cover and discharged through the smoke exhaust component.

[0017] 2. A motor rotor welding fixture using a VA controller is provided with an exhaust fan. When the sealing plate is in a closed state, the pressing block will press on the button, and the exhaust fan will be in a working state to discharge the smoke in the box cover. When the sealing plate moves upward and opens, the pressing block will be separated from the button, and the button will be reset, and the exhaust fan will be powered off and stop working.

[0018] 3. A motor rotor welding fixture using a VA controller, which is equipped with a rack. When the cover plate moves upward, it drives the rack to move synchronously. Then the rack meshes to drive the gear ring to drive the second shaft column to rotate. Then the first shaft column is driven to rotate through the transmission cooperation of the pulley and the belt. Then the first shaft column drives the main shaft to rotate through the meshing transmission of two bevel gears.

[0019] 4. A motor rotor welding fixture using a VA controller, by setting a twisted rod, when the sealing plate moves upward, it synchronously drives the support rod and the twisted rod to move, and then the twisted rod and the convex ball cooperate to make the ring rotate, and the ring will synchronously drive the main shaft to rotate. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the overall structure of a motor rotor welding fixture using a VA controller proposed by the present invention;

[0021] Figure 2 This is a schematic diagram of the internal structure of a motor rotor welding fixture using a VA controller proposed by the present invention;

[0022] Figure 3 This is a schematic diagram of the bottom structure of a platform of a motor rotor welding fixture using a VA controller proposed by the present invention;

[0023] Figure 4 A schematic diagram of the platform structure of a motor rotor welding fixture using a VA controller proposed by the present invention;

[0024] Figure 5 For the present invention Figure 4 A schematic diagram of the enlarged structure at point A;

[0025] Figure 6 This is a schematic diagram of the exhaust fan installation structure of a motor rotor welding fixture using a VA controller proposed by the present invention;

[0026] Figure 7 For the present invention Figure 2 A schematic diagram of the enlarged structure at B;

[0027] Figure 8 A schematic diagram of a rack installation structure of a motor rotor welding fixture using a VA controller proposed by the present invention;

[0028] Fig. 9A schematic diagram of the bevel gear installation structure of a motor rotor welding fixture using a VA controller proposed by the present invention;

[0029] Fig.10 For the present invention Figure 8 A schematic diagram of the enlarged structure at C;

[0030] Fig.11 A schematic diagram of a support rod installation structure of a motor rotor welding fixture using a VA controller proposed by the present invention;

[0031] Fig.12 This is a schematic diagram of the twisted rod installation structure of a motor rotor welding fixture using a VA controller proposed by the present invention;

[0032] Fig.13 For the present invention Fig.12 Enlarged structural diagram at D.

[0033] In the figure: 1, bottom plate; 2, box cover; 3, socket; 4, cover plate; 5, platform; 6, arch frame; 7, cross bar; 8, electric slide rail; 9, slider; 10, base; 11, motor; 12, center rod; 13, round groove; 14, positioning rod; 15, clamping plate; 16, guide column; 17, guide sleeve; 18, spring; 19, wind cover; 20, exhaust pipe; 21, exhaust fan; 22, button; 2 3. Pressure block; 24. Mounting plate; 25. Electric push rod; 26. Pressure plate; 27. Cross plate; 28. Main shaft; 29. ​​Fan blades; 30. Bracket; 31. First shaft column; 32. Second shaft column; 33. Pulley; 34. Belt; 35. Bevel gear; 36. Gear ring; 37. Rack; 38. Ring; 39. Convex ball; 40. Twisted rod; 41. Support rod; 42. Air distribution pipe; 43. Cover plate. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0035] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0036] Reference Figure 1-Figure 13A motor rotor welding fixture using a VA controller comprises a bottom plate 1, an electric slide rail 8 and a box cover 2 are fixed on the top of the bottom plate 1, the electric slide rail 8 extends from the open end of the box cover 2, a platform 5 is fixed on the top of the slider 9 of the electric slide rail 8, two groups of clamping components for fixing the motor rotor are installed on the platform 5, arch frames 6 are arranged at both ends of the platform 5, the arch frames 6 are fixedly connected to the platform 5 through a cross bar 7, a socket 3 is arranged at the open end of the top of the box cover 2, a sealing plate 4 is inserted in the socket 3, the bottom end of the sealing plate 4 is a triangular structure, and a smoke exhaust component is arranged at the smoke exhaust port on the top of the box cover 2, The two clamping assemblies form two workstations, and the rotor seat and the rotor steel cover are welded in the two workstations respectively. The specific steps are the same as those in the prior patent CN112846501B and will not be repeated here. When the slider 9 drives the platform 5 in and out of the box cover 2, the bottom end of the arch 6 will enter the bottom of the sealing plate 4, and then the sealing plate 4 will be pushed upward along the socket 3, so that the sealing plate 4 will be automatically opened, and then the sealing plate 4 will be automatically closed due to the action of gravity, so that the smoke generated during the welding process will be sealed in the box cover 2 and discharged through the smoke exhaust assembly, so that the smoke will not escape from the box cover 2.

[0037] Among them, the clamping assembly includes a motor 11 fixed at the bottom of the platform 5, the output shaft of the motor 11 passes through the platform 5 and is connected to the base 10, a center rod 12 is fixed in the circular groove 13 on the top of the base 10, a pair of L-shaped positioning rods 14 are fixed to the circumferential outer wall of the base 10, a horizontal clamping plate 15 is inserted at the top of the positioning rod 14, a guide column 16 fixed on the positioning rod 14 is arranged below the clamping plate 15, a guide sleeve 17 fixed to the clamping plate 15 is sleeved on the guide column 16, a spring 18 is sleeved on the guide column 16, and the two ends of the spring 18 are fixedly connected to the guide sleeve 17 and the guide column 16 respectively, the rotor is placed in the circular groove 13, so that the center rod 12 passes through the middle of the rotor, the rotor will push the positioning rods 14 on both sides outward, and then under the elastic force of the spring 18, the positioning rods 14 clamp the rotor, and then the rotor seat or rotor steel cover to be welded is placed on the corresponding rotor top, the motor 11 can drive the rotor to rotate, so as to adjust the welding position.

[0038] Among them, the smoke exhaust component includes a wind hood 19 fixed above the smoke exhaust port, an exhaust pipe 20 is provided at the top of the wind hood 19, and a smoke exhaust structure is provided inside the wind hood 19, which can be connected to the exhaust pipe 20 through a pipeline, so that the smoke in the box cover 2 can be discharged from the exhaust pipe 20 through the smoke exhaust structure.

[0039] In Example 1, the smoke exhaust structure includes an exhaust fan 21, which is fixed in the smoke exhaust port. A button 22 is fixed on the top of the box cover 2, and a pressure block 23 that can be pressed on the button 22 is fixed on the side of the sealing plate 4. When the sealing plate 4 is in a closed state, the pressure block 23 will be pressed on the button 22. At this time, the exhaust fan 21 will be in a working state to exhaust the smoke in the box cover 2. When the sealing plate 4 moves upward and opens, the pressure block 23 will be separated from the button 22, and the button 22 will be reset. At this time, the exhaust fan 21 will be powered off and stop working.

[0040] In Example 2, the smoke exhaust structure includes fan blades 29, a horizontal plate 27 is fixed in the wind hood 19, the bottom of the horizontal plate 27 is rotatably connected to the main shaft 28, the fan blades 29 are fixed to the bottom end of the main shaft 28, and the main shaft 28 is connected to a driving structure. When the main shaft 28 is driven to rotate by the driving structure, the main shaft 28 will synchronously drive the fan blades 29 to rotate, and then the smoke in the box cover 2 can be discharged through the fan blades 29.

[0041] The driving structure includes a first shaft column 31 that passes through the front end of the wind cover 19, and the adjacent ends of the first shaft column 31 and the main shaft 28 are fixedly sleeved with bevel gears 35, and the two bevel gears 35 are meshed and connected. A bracket 30 is fixed on the top of the box cover 2, and a second shaft column 32 is rotatably connected to the bracket 30. The first shaft column 31 is also rotatably connected to the bracket 30. The front ends of the first shaft column 31 and the second shaft column 32 are fixedly sleeved with pulleys 33, and the rear end of the second shaft column 32 is connected to the second shaft column 32 by a belt 34. A gear ring 36 is fixedly sleeved, and a rack 37 meshing with the gear ring 36 is fixed on the side of the closing plate 4. The rack 37 passes through the box cover 2, and the closing plate 4 moves upward and synchronously drives the rack 37 to move, and then the gear ring 36 is meshed with the rack 37 to drive the second shaft column 32 to rotate, and then the first shaft column 31 is driven to rotate through the transmission cooperation of the pulley 33 and the belt 34, and then the first shaft column 31 drives the main shaft 28 to rotate through the meshing transmission of the two bevel gears 35.

[0042] In Example 3, the driving structure includes a twisted rod 40 located in the exhaust pipe 20, and the center positions of the main shaft 28 and the fan blades 29 are both provided with through holes. A circular ring 38 is fixed in the main shaft 28, and a convex ball 39 is fixed on the circumferential inner wall of the circular ring 38. The twisted rod 40 passes through the middle of the circular ring 38, and a transmission fit is formed between the convex ball 39 and the twisted rod 40. A support rod 41 is fixed on the side of the sealing plate 4, and the support rod 41 is fixed to the top of the twisted rod 40. A cover plate 43 is sleeved on the twisted rod 40, and the cover plate 43 is fixed in the exhaust pipe 20. The exhaust pipe 20 is provided with an exhaust structure. When the sealing plate 4 moves upward, the support rod 41 and the twisted rod 40 are synchronously driven to move, and then the twisted rod 40 and the convex ball 39 cooperate to rotate the circular ring 38, and the circular ring 38 will synchronously drive the main shaft 28 to rotate.

[0043] The exhaust structure includes an air distribution pipe 42 arranged on the side of the exhaust pipe 20, which can be connected to the air distribution pipe 42 through a pipeline, so that the smoke in the box cover 2 can be discharged from the air distribution pipe 42 through the fan blades 29.

[0044] Furthermore, mounting plates 24 are fixed to the inner walls on both sides of the box cover 2, and an electric push rod 25 is fixed to the bottom of the mounting plate 24. The output shaft of the electric push rod 25 is connected to a pressure plate 26. Before the platform 5 enters the interior of the box cover 2 for welding, the output shaft of the electric push rod 25 drives the pressure plate 26 to move downward, so that the pressure plate 26 is pressed on the rotor seat or rotor steel cover to be welded, so that it can be fixed, and then the welding device can perform welding work.

[0045] The switching actions of the above electric slide rail 8, the motor 11 and the electric push rod 25 are all controlled by a controller, which is specifically a VA controller.

[0046] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A motor rotor welding fixture using a VA controller, comprising a base plate (1), characterized in that: The top of the bottom plate (1) is fixed with an electric slide rail (8) and a box cover (2), the electric slide rail (8) extends from the open end of the box cover (2), the top of the slider (9) of the electric slide rail (8) is fixed with a platform (5), two groups of clamping components for fixing the motor rotor are installed on the platform (5), both ends of the platform (5) are provided with arch frames (6), the arch frames (6) are fixedly connected to the platform (5) through a cross bar (7), a socket (3) is provided at the open end of the top of the box cover (2), a sealing plate (4) is inserted in the socket (3), the bottom end of the sealing plate (4) is a triangular structure, and a smoke exhaust component is provided at the smoke exhaust port at the top of the box cover (2); The clamping assembly comprises a motor (11) fixed to the bottom of the platform (5), the output shaft of the motor (11) passes through the platform (5) and is connected to the base (10), a center rod (12) is fixed in a circular groove (13) at the top of the base (10), a pair of L-shaped positioning rods (14) are fixed to the circumferential outer wall of the base (10), a transverse clamping plate (15) is inserted at the top of the positioning rod (14), a guide column (16) fixed to the positioning rod (14) is arranged below the clamping plate (15), a guide sleeve (17) fixed to the clamping plate (15) is sleeved on the guide column (16), and a spring (18) is sleeved on the guide column (16), and two ends of the spring (18) are respectively fixedly connected to the guide sleeve (17) and the guide column (16); The smoke exhaust assembly comprises a hood (19) fixed above the smoke exhaust port, an exhaust pipe (20) is provided at the top of the hood (19), and a smoke exhaust structure is provided inside the hood (19); The smoke exhaust structure comprises a fan blade (29), a horizontal plate (27) is fixed in the wind cover (19), the bottom of the horizontal plate (27) is rotatably connected to a main shaft (28), the fan blade (29) is fixed to the bottom end of the main shaft (28), and the main shaft (28) is connected to a driving structure; The driving structure comprises a first shaft column (31) penetrating through the front end of the wind cover (19); the adjacent ends of the first shaft column (31) and the main shaft (28) are both fixedly sleeved with bevel gears (35); the two bevel gears (35) are meshingly connected; a bracket (30) is fixedly provided on the top of the box cover (2); a second shaft column (32) is rotatably connected to the bracket (30); the first shaft column (31) is also rotatably connected to the bracket (30); the front ends of the first shaft column (31) and the second shaft column (32) are both fixedly sleeved with pulleys (33); the rear end of the second shaft column (32) is connected to the two pulleys (33) via a belt (34); a gear ring (36) is fixedly provided; a rack (37) meshing with the gear ring (36) is fixedly provided on the side of the sealing plate (4); the rack (37) passes through the box cover (2).

2. The motor rotor welding fixture using a VA controller according to claim 1, characterized in that: The smoke exhaust structure comprises an exhaust fan (21), the exhaust fan (21) is fixed in the smoke exhaust port, a button (22) is fixed on the top of the box cover (2), and a pressing block (23) capable of pressing on the button (22) is fixed on the side of the sealing plate (4).

3. The motor rotor welding fixture using a VA controller according to claim 1, characterized in that: The driving structure comprises a twisted rod (40) located in the exhaust pipe (20), the main shaft (28) and the fan blades (29) are both provided with through holes at their central positions, a circular ring (38) is fixed in the main shaft (28), a convex ball (39) is fixed on the inner wall of the circular ring (38), the twisted rod (40) passes through the middle of the circular ring (38), a transmission fit is formed between the convex ball (39) and the twisted rod (40), a support rod (41) is fixed on the side of the sealing plate (4), the support rod (41) is fixed to the top of the twisted rod (40), a cover plate (43) is sleeved on the twisted rod (40), the cover plate (43) is fixed in the exhaust pipe (20), and an exhaust structure is provided on the exhaust pipe (20).

4. The motor rotor welding fixture using a VA controller according to claim 3, characterized in that: The exhaust structure comprises an air distribution pipe (42) arranged on the side of the exhaust pipe (20).

5. The motor rotor welding fixture using a VA controller according to claim 1, characterized in that: Mounting plates (24) are fixed to the inner walls on both sides of the box cover (2), an electric push rod (25) is fixed to the bottom of the mounting plate (24), and a pressure plate (26) is connected to the output shaft of the electric push rod (25).

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