Waterless cleaning robot for photovoltaic solar panel

Abstract

The invention discloses a water-free cleaning robot for a photovoltaic solar panel, and relates to the technical field of photovoltaic solar panel cleaning. The device comprises a clamping assembly; the clamping assembly comprises a base, first vertical plates are symmetrically and fixedly connected to the top of the base, connecting plates are fixedly connected to one side faces of the first vertical plates, first vertical plates are fixedly connected to the side faces, away from the first vertical plates, of the connecting plates, electric push rods are fixedly connected to one side faces of the first vertical plates, and clamping plates are fixedly connected to the output ends of the electric push rods. The top of the base is slidably connected with a moving block. The photovoltaic solar panel is automatically fixed and clamped through the clamping plates, the stability of the photovoltaic solar panel in the cleaning process is guaranteed, the first cleaning plate and the second cleaning plate are made to make contact with the top and the bottom of the photovoltaic solar panel through movement and rotation of the first cleaning plate and the second cleaning plate, and therefore double-face cleaning of the photovoltaic solar panel is rapidly completed, and the cleaning efficiency is improved. And the cleaning efficiency is effectively improved.

Description

Technical Field

[0001] The invention belongs to the technical field of photovoltaic solar panel cleaning, and in particular relates to a waterless cleaning robot for photovoltaic solar panels. Background Art

[0002] Solar panels, or solar cells, are thin sheets of optoelectronic semiconductors that use sunlight to generate electricity directly. They are also called "solar chips" or "photovoltaic cells." In physics, they are called solar photovoltaics, or photovoltaics for short. As long as they are illuminated by light that meets certain illumination conditions, they can instantly output voltage and generate current in the presence of a circuit. Solar cells are devices that directly convert light energy into electrical energy through the photoelectric effect or photochemical effect.

[0003] At present, the surface of photovoltaic solar panels needs to be cleaned of dust before use. The existing waterless cleaning robot can only clean one side of the photovoltaic solar panel, and the cleaning process only scrapes back and forth on the surface of the photovoltaic solar panel to complete the cleaning of the photovoltaic solar panel, which is not only inefficient but also affects the cleaning effect. To this end, we provide a waterless cleaning robot for photovoltaic solar panels to solve the above problems. Summary of the invention

[0004] The object of the present invention is to provide a waterless cleaning robot for photovoltaic solar panels, which automatically fixes and clamps the photovoltaic solar panel through a clamping plate to ensure its stability during the cleaning process, and through the movement and rotation of a first cleaning plate and a second cleaning plate, the first cleaning plate and the second cleaning plate are made to contact the top and the bottom of the photovoltaic solar panel, thereby quickly completing the double-sided cleaning of the photovoltaic solar panel, effectively improving the cleaning efficiency, and solving the problem that the existing photovoltaic solar panels need to be cleaned of dust on their surfaces before use. The existing waterless cleaning robots can only clean one side of the photovoltaic solar panel, and the cleaning process only scrapes back and forth on the surface of the photovoltaic solar panel to complete the cleaning of the photovoltaic solar panel, which is not only inefficient but also affects the problem of poor cleaning effect.

[0005] To solve the above technical problems, the present invention is achieved through the following technical solutions: the present invention is a waterless cleaning robot for photovoltaic solar panels, including a clamping assembly; the clamping assembly includes a base, the top of the base is symmetrically fixedly connected with a first vertical plate, one side of the first vertical plate is fixedly connected with a connecting plate, the side of the connecting plate away from the first vertical plate is fixedly connected with a first vertical plate, one side of the first vertical plate is fixedly connected with an electric push rod, and the output end of the electric push rod is fixedly connected with a clamping plate; the top of the base is slidably connected with a moving block, the top of the moving block is fixedly connected with a push rod, and the top end of the push rod is fixedly connected with a supporting plate; the top of the base is slidably matched with a cleaning assembly, and the cleaning assembly includes two mounting plates horizontally slidably arranged on the top, the top of the mounting plate is rotatably connected with a first rotating shaft and a second rotating shaft, one end of the first rotating shaft is fixedly connected with the first cleaning plate, and one end of the second rotating shaft is fixedly connected with the second cleaning plate which is staggered with the first cleaning plate.

[0006] The present invention is further configured such that the clamping assembly also includes a second vertical plate symmetrically fixedly connected to the top of the base, a side surface of the second vertical plate is rotatably connected to a screw rod, adjacent screw rods and connecting plates are slidably matched, the base is fixedly connected to a support plate, the top of the support plate is fixedly connected to a first motor, the output end of the first motor is fixedly matched with one of the screw rods, one side surface of the second vertical plate is fixedly connected to a second motor, and the second motor is fixedly connected to another screw rod.

[0007] The present invention is further configured such that a control box is fixedly connected to the top of the base, a first guide groove slidably matched with the moving block is provided on the top of the base, and a second guide groove slidably matched with the second vertical plate is symmetrically provided on the top of the base.

[0008] The present invention is further configured as follows: the cleaning assembly also includes a U-shaped frame slidably connected to the top of the base, the top of the U-shaped frame is fixedly connected with a U-shaped plate, and the two ends of the U-shaped plate are fixedly matched with the two mounting plates in a one-to-one correspondence; the other end of the first rotating shaft is fixedly connected to the first sprocket, the peripheral side of the second rotating shaft is fixedly connected to the second sprocket, the first sprocket and the second sprocket are meshed with a chain, the other end of the second rotating shaft is fixedly connected to the first pulley, the side of the mounting plate away from the first cleaning plate is rotatably connected to a transmission rod, the end of the transmission rod is fixedly connected to the second pulley, and the first pulley and the second pulley are directly transmitted with a belt.

[0009] The present invention is further configured such that the peripheral side surface of the transmission rod is fixedly connected with a spur gear, the side surface of the first vertical plate close to the mounting plate is symmetrically fixedly connected with an L-shaped rod, and the end of the L-shaped rod is fixedly connected with a toothed plate meshing with the spur gear.

[0010] The present invention is further configured such that the top of the base is fixedly fitted with a traction assembly, the traction assembly includes a second vertical plate and a third vertical plate fixedly connected to the top of the base, a first special-shaped tube is passed through and fixedly connected to one side of the second vertical plate, and a second special-shaped tube is passed through and fixedly connected to one side of the third vertical plate.

[0011] The present invention is further configured such that the traction assembly also includes a winding roller fixedly connected to the other end of the screw rod, and the circumferential side surface of the winding roller is symmetrically provided with winding grooves, wherein a first traction rope passing through a first special-shaped tube is wound around the inner circumferential side surface of one of the winding grooves, and a second traction rope passing through a second special-shaped tube is wound around the inner circumferential side surface of the other winding groove, and the ends of the first traction rope and the second traction rope away from the winding roller are both fixedly connected to the moving block.

[0012] The present invention is further configured such that a PLC controller is provided inside the control box, and the PLC controller is electrically connected to the first motor, the electric push rod, and the second motor.

[0013] The present invention has the following beneficial effects: 1. The present invention places the photovoltaic solar panel on a support plate, and then controls two electric push rods to drive the clamping plate to move toward the direction close to the outer wall of the photovoltaic solar panel, so that the clamping plate is tightly attached to the outer wall of the photovoltaic solar panel, thereby completing the fixed clamping of the photovoltaic solar panel, and then controls the cleaning component to move toward the direction close to the photovoltaic solar panel, so that the first cleaning plate and the second cleaning plate on the cleaning component move from one side of the photovoltaic solar panel to the other side of the photovoltaic solar panel, and at the same time controls the first rotating shaft and the second rotating shaft to rotate synchronously, thereby driving the first cleaning plate and the second cleaning plate to rotate, and through the rotation of the first cleaning plate and the second cleaning plate, the first cleaning plate and the second cleaning plate contact the top and the bottom of the photovoltaic solar panel, thereby quickly completing the double-sided cleaning of the photovoltaic solar panel, and effectively improving the cleaning efficiency; during the movement of the cleaning component, the support plate is synchronously controlled to move away from the photovoltaic solar panel, so as to avoid the interference of the cleaning component with the support plate during the cleaning process of the photovoltaic solar panel, thereby affecting the normal cleaning of the photovoltaic solar panel.

[0014] 2. The present invention drives the screw to rotate by synchronously controlling the first motor and the second motor, so that the screw drives the U-shaped frame to move in the direction close to the photovoltaic solar panel, and then drives the two mounting plates to move in the direction close to the photovoltaic solar panel through the U-shaped plate, thereby providing power for the movement of the mounting plates. At the same time, in the process of the mounting plates moving in the direction close to the photovoltaic solar panel, the spur gear is engaged with the toothed plate, thereby driving the spur gear to rotate, and the spur gear drives the transmission rod to rotate, further driving the second pulley to rotate, so that the second pulley drives the first pulley to rotate through the belt, so that the first pulley drives the second rotating shaft and the second sprocket to rotate, so that the second sprocket drives the first sprocket to rotate through the chain, and then drives the first rotating shaft to rotate, providing power for the rotation of the first rotating shaft and the second rotating shaft.

[0015] 3. The present invention drives the winding roller to rotate by rotating another screw, so that the second traction rope is wound on the winding roller, and the first traction rope is released synchronously, and the second traction rope is wound, so that the second traction rope drives the moving block to move away from the photovoltaic solar panel, and then drives the support plate to move away from the photovoltaic solar panel through the top rod, providing power for the movement of the support plate.

[0016] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0018] Figure 1 The figure is a schematic diagram of the structure of a waterless cleaning robot for photovoltaic solar panels.

[0019] Figure 2 for Figure 1 Schematic diagram of the side structure.

[0020] Figure 3 It is a schematic diagram of the structure of the clamping assembly in the present invention.

[0021] Figure 4 It is a schematic diagram of the structure of the cleaning component in the present invention.

[0022] Figure 5 for Figure 4 Schematic diagram of the local structure.

[0023] Figure 6 It is a schematic diagram of the structure of the fixed cooperation between the moving block and the traction assembly in the present invention.

[0024] Figure 7 It is a schematic diagram of the structure of the traction assembly in the present invention.

[0025] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0026] 1-clamping assembly, 101-base, 102-first vertical plate, 103-connecting plate, 104-first vertical plate, 105-electric push rod, 106-clamping plate, 107-moving block, 108-top rod, 109-support plate, 110-second vertical plate, 111-screw rod, 112-support plate, 113-first motor, 114-control box, 115-first guide groove, 116-second guide groove, 117-second motor, 2-cleaning assembly, 201-mounting plate, 202-first rotating shaft, 203-second rotating shaft, 20 4-first cleaning plate, 205-second cleaning plate, 206-U-shaped frame, 207-U-shaped plate, 208-first sprocket, 209-second sprocket, 210-first pulley, 211-transmission rod, 212-second pulley, 213-spur gear, 214-L-shaped rod, 215-tooth plate, 3-traction assembly, 301-second vertical plate, 302-third vertical plate, 303-first special-shaped tube, 304-second special-shaped tube, 305-winding roller, 306-winding groove, 307-first traction rope, 308-second traction rope. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] For example, see Figure 1-7 The present invention provides the following technical solutions: a waterless cleaning robot for photovoltaic solar panels, comprising a clamping assembly 1; the clamping assembly 1 comprises a base 101, the top of the base 101 is symmetrically fixedly connected with a first vertical plate 102, one side of the first vertical plate 102 is fixedly connected with a connecting plate 103, one side of the connecting plate 103 away from the first vertical plate 102 is fixedly connected with a first vertical plate 104, one side of the first vertical plate 104 is fixedly connected with an electric push rod 105, and the output end of the electric push rod 105 is fixedly connected with a clamping plate 106; the top of the base 101 is slidably connected with a moving block 107, the moving block 107 The top of the base 101 is fixedly connected with a push rod 108, and the top of the push rod 108 is fixedly connected with a support plate 109; the top of the base 101 is slidably matched with a cleaning component 2, and the cleaning component 2 includes two mounting plates 201 horizontally slidably arranged on the top, and the top of the mounting plate 201 is rotatably connected with a first rotating shaft 202 and a second rotating shaft 203, one end of the first rotating shaft 202 is fixedly connected with a first cleaning plate 204, and one end of the second rotating shaft 203 is fixedly connected with a second cleaning plate 205 which is offset from the first cleaning plate 204 (cleaning cloths are installed at the bottom of the first cleaning plate 204 and the second cleaning plate 205).

[0029] The operation process of this embodiment is as follows: the initial position support plate 109 is located directly below between the two clamping plates 106, and the photovoltaic solar panel is first placed on the support plate 109, and then the two electric push rods 105 are controlled to drive the clamping plates 106 to move toward the direction close to the outer wall of the photovoltaic solar panel, so that the clamping plates 106 are tightly attached to the outer wall of the photovoltaic solar panel, thereby completing the fixed clamping of the photovoltaic solar panel, and then the cleaning component 2 is controlled to move toward the direction close to the photovoltaic solar panel, so that the first cleaning plate 204 and the second cleaning plate 205 on the cleaning component 2 are moved from one side of the photovoltaic solar panel to the other side of the photovoltaic solar panel, and at the same time, the first rotating shaft 202 and the second rotating shaft 203 are controlled to rotate synchronously, thereby driving the first cleaning plate 204 and the second cleaning plate 205 to rotate, and through the rotation of the first cleaning plate 204 and the second cleaning plate 205, the first cleaning plate 204 and the second cleaning plate 205 are made to contact the top and the bottom of the photovoltaic solar panel, thereby quickly completing the double-sided cleaning of the photovoltaic solar panel, and effectively improving the cleaning efficiency;

[0030] During the movement of the cleaning component 2, the support plate 109 is synchronously controlled to move away from the photovoltaic solar panel, so as to avoid interference between the cleaning component 2 and the support plate 109 during the cleaning process of the photovoltaic solar panel, thereby affecting the normal cleaning of the photovoltaic solar panel.

[0031] For example 2, please refer to Figure 1-7, the second embodiment is improved as follows on the basis of the first embodiment, the clamping assembly 1 also includes a second vertical plate 110 symmetrically fixedly connected to the top of the base 101, one side of the second vertical plate 110 is rotatably connected to a screw rod 111, and the adjacent screw rods 111 and the connecting plate 103 are slidably matched, the base 101 is fixedly connected to a support plate 112, the top of the support plate 112 is fixedly connected to a first motor 113, the output end of the first motor 113 is fixedly matched with one of the screw rods 111, one side of one of the second vertical plates 110 is fixedly connected to a second motor 117, the second motor 117 is fixedly connected to another screw rod 111, the top of the base 101 is fixedly connected to a control box 114, the top of the base 101 is provided with a first guide groove 115 that slides with the moving block 107, and the top of the base 101 is symmetrically provided with a second guide groove 116 that slides with the second vertical plate 110, and the cleaning assembly 2 also includes a U-shaped frame slidably connected to the top of the base 101 206, a U-shaped plate 207 is fixedly connected to the top of the U-shaped frame 206, and the two ends of the U-shaped plate 207 are fixedly matched with the two mounting plates 201 in a one-to-one correspondence; the other end of the first rotating shaft 202 is fixedly connected to the first sprocket 208, and the peripheral side of the second rotating shaft 203 is fixedly connected to the second sprocket 209, and a chain is meshed between the first sprocket 208 and the second sprocket 209, and the other end of the second rotating shaft 203 is fixedly connected to the first pulley 210, and the mounting plate 201 is away from A transmission rod 211 is rotatably connected to one side of the first cleaning plate 204, and a second pulley 212 is fixedly connected to the end of the transmission rod 211. A belt is directly transmitted between the first pulley 210 and the second pulley 212. A spur gear 213 is fixedly connected to the circumferential side of the transmission rod 211. An L-shaped rod 214 is symmetrically fixedly connected to one side of the first vertical plate 102 close to the mounting plate 201, and a toothed plate 215 meshing with the spur gear 213 is fixedly connected to the end of the L-shaped rod 214.

[0032] The operation process of this embodiment is as follows: by synchronously controlling the first motor 113 and the second motor 117 to drive the screw rod 111 to rotate, the screw rod 113 drives the U-shaped frame 206 to move in the direction close to the photovoltaic solar panel, and then drives the two mounting plates 201 to move in the direction close to the photovoltaic solar panel through the U-shaped plate 207, providing power for the movement of the mounting plate 201. At the same time, in the process of the mounting plate 201 moving in the direction close to the photovoltaic solar panel, the spur gear 213 is meshed with the toothed plate 215, thereby driving the spur gear 213 to rotate, so that the spur gear 213 drives the transmission rod 211 to rotate, and further drives the second pulley 212 to rotate, so that the second pulley 212 drives the first pulley 210 to rotate through the belt, so that the first pulley 210 drives the second rotating shaft 203 and the second sprocket 209 to rotate, so that the second sprocket 209 drives the first sprocket 208 to rotate through the chain, and then drives the first rotating shaft 202 to rotate, providing power for the rotation of the first rotating shaft 202 and the second rotating shaft 203.

[0033] For example 3, please refer to Figure 1-7 The third embodiment is improved on the basis of the first embodiment as follows: the top of the base 101 is fixedly matched with a traction assembly 3, the traction assembly 3 includes a second vertical plate 301 and a third vertical plate 302 fixedly connected to the top of the base 101, a first special-shaped tube 303 is fixedly connected to one side of the second vertical plate 301, and a second special-shaped tube 304 is fixedly connected to one side of the third vertical plate 302. The traction assembly 3 also includes a winding roller 305 fixedly connected to the end of the other screw rod 111, and the surrounding side of the winding roller 305 is symmetrically opened. There is a winding groove 306, wherein the inner side surface of one winding groove 306 is wound with a first traction rope 307 passing through the first special-shaped tube 303, and the inner side surface of the other winding groove 306 is wound with a second traction rope 308 passing through the second special-shaped tube 304, and the ends of the first traction rope 307 and the second traction rope 308 away from the winding roller 305 are fixedly connected to the moving block 107, and a PLC controller is arranged inside the control box 114, and the PLC controller is electrically connected to the first motor 113, the electric push rod 105, and the second motor 117.

[0034] The operation process of this embodiment is: through the rotation of another screw rod 111, the screw rod 111 drives the winding roller 305 to rotate, so that the second traction rope 308 is wound on the winding roller 305, and the first traction rope 308 is released synchronously, and the second traction rope 308 is wound, so that the second traction rope 308 drives the moving block 107 to move away from the photovoltaic solar panel, and then drives the support plate 109 to move away from the photovoltaic solar panel through the top rod 108, providing power for the movement of the support plate 109.

[0035] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0036] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A waterless cleaning robot for photovoltaic solar panels, comprising a clamping assembly (1); characterized in that: The clamping assembly (1) comprises a base (101), the top of the base (101) is symmetrically fixedly connected to a first vertical plate (102), one side of the first vertical plate (102) is fixedly connected to a connecting plate (103), one side of the connecting plate (103) away from the first vertical plate (102) is fixedly connected to a first vertical plate (104), one side of the first vertical plate (104) is fixedly connected to an electric push rod (105), and the output end of the electric push rod (105) is fixedly connected to a clamping plate (106); The top of the base (101) is slidably connected to a moving block (107), the top of the moving block (107) is fixedly connected to a push rod (108), and the top of the push rod (108) is fixedly connected to a support plate (109); The top of the base (101) is slidably matched with a cleaning component (2), and the cleaning component (2) comprises two mounting plates (201) which are horizontally slidably arranged on the top, and the top of the mounting plates (201) is rotatably connected with a first rotating shaft (202) and a second rotating shaft (203), one end of the first rotating shaft (202) is fixedly connected with a first cleaning plate (204), and one end of the second rotating shaft (203) is fixedly connected with a second cleaning plate (205) which is offset from the first cleaning plate (204).

2. A waterless cleaning robot for photovoltaic solar panels according to claim 1, characterized in that: The clamping assembly (1) further comprises a second vertical plate (110) symmetrically fixedly connected to the top of the base (101); a side surface of the second vertical plate (110) is rotatably connected to a screw rod (111); adjacent screw rods (111) and connecting plates (103) are slidably matched; a support plate (112) is fixedly connected to the base (101); a first motor (113) is fixedly connected to the top of the support plate (112); an output end of the first motor (113) is fixedly matched with one of the screw rods (111); a second motor (117) is fixedly connected to one side surface of the second vertical plate (110); and the second motor (117) is fixedly connected to the other screw rod (111).

3. A waterless cleaning robot for photovoltaic solar panels according to claim 2, characterized in that: A control box (114) is fixedly connected to the top of the base (101), a first guide groove (115) slidably matched with the moving block (107) is provided on the top of the base (101), and a second guide groove (116) slidably matched with the second vertical plate (110) is symmetrically provided on the top of the base (101).

4. A waterless cleaning robot for photovoltaic solar panels according to claim 3, characterized in that: The cleaning assembly (2) further comprises a U-shaped frame (206) slidably connected to the top of the base (101), a U-shaped plate (207) being fixedly connected through the top of the U-shaped frame (206), and two ends of the U-shaped plate (207) are fixedly matched with the two mounting plates (201) in a one-to-one correspondence; The other end of the first rotating shaft (202) is fixedly connected to a first sprocket (208), the peripheral side of the second rotating shaft (203) is fixedly connected to a second sprocket (209), a chain is meshed between the first sprocket (208) and the second sprocket (209), the other end of the second rotating shaft (203) is fixedly connected to a first pulley (210), a side of the mounting plate (201) away from the first cleaning plate (204) is rotatably connected to a transmission rod (211), the end of the transmission rod (211) is fixedly connected to a second pulley (212), and a belt is provided for direct transmission between the first pulley (210) and the second pulley (212).

5. The waterless cleaning robot for photovoltaic solar panels according to claim 4, characterized in that: A spur gear (213) is fixedly connected to the peripheral side surface of the transmission rod (211), an L-shaped rod (214) is symmetrically fixedly connected to a side surface of the first vertical plate (102) close to the mounting plate (201), and a toothed plate (215) meshing with the spur gear (213) is fixedly connected to the end of the L-shaped rod (214).

6. The waterless cleaning robot for photovoltaic solar panels according to claim 5, characterized in that: The top of the base (101) is fixedly matched with a traction assembly (3), and the traction assembly (3) comprises a second vertical plate (301) and a third vertical plate (302) fixedly connected to the top of the base (101), a first special-shaped tube (303) is passed through and fixedly connected to one side of the second vertical plate (301), and a second special-shaped tube (304) is passed through and fixedly connected to one side of the third vertical plate (302).

7. The waterless cleaning robot for photovoltaic solar panels according to claim 6, characterized in that: The traction assembly (3) also includes a winding roller (305) fixedly connected to the end of another screw rod (111), and the winding roller (305) is symmetrically provided with winding grooves (306) on the circumferential side surface, wherein a first traction rope (307) passing through a first special-shaped tube (303) is wound around the inner circumferential side surface of one of the winding grooves (306), and a second traction rope (308) passing through a second special-shaped tube (304) is wound around the inner circumferential side surface of the other winding groove (306), and the ends of the first traction rope (307) and the second traction rope (308) away from the winding roller (305) are both fixedly connected to the moving block (107).

8. The waterless cleaning robot for photovoltaic solar panels according to claim 7, characterized in that: A PLC controller is arranged inside the control box (114), and the PLC controller is electrically connected to the first motor (113), the electric push rod (105), and the second motor (117).

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