A soft starter for a single-phase photovoltaic water pump inverter and its usage method

Abstract

The present invention relates to the technical field of soft starters, and discloses a soft starter for a single-phase photovoltaic water pump inverter and its usage method, including a distribution box, a cabinet door is hinged on the surface of the distribution box, a soft starter is fixedly connected to the inner wall of the distribution box, and a switch is fixedly connected to the inner wall of the distribution box. It further includes: a limiting component, the limiting component includes a groove plate, the surface of the groove plate is fixedly connected to the inner wall of the distribution box, and a limiting hole is provided on the surface of the groove plate. After the soft starter is installed inside the distribution box, the soft starter is connected to the electrical components inside the distribution box through cables. A limiting component is provided inside the distribution box to limit the cables inside the distribution box. A cover component is provided on the surface of the limiting component to squeeze the cables inside the limiting component to prevent the cables in the limiting component from falling off, and a fixing component is used to fix the cover component.

Description

Technical Field

[0001] The present invention relates to the technical field of soft starters, and particularly to a soft starter for a single-phase photovoltaic water pump inverter and its usage method. Background Art

[0002] ‌A water pump soft starter‌ is a device specifically used to control the slow startup and speed regulation of motors. By gradually increasing the voltage and current of the motor, it avoids the direct impact of full voltage on the motor, thereby reducing the mechanical stress during motor startup, extending its service life, and ensuring the stable operation of the power grid‌. Soft starters are widely used in equipment that requires smooth startup, especially loads such as fans, water pumps, conveyors, and compressors. It can effectively limit the starting current of an AC asynchronous motor during startup;

[0003] Currently, the soft starters used in water pump inverters need to be installed inside the distribution box. When the soft starter is installed inside the distribution box, it needs to be connected to electrical components such as circuit breakers and inverters through multiple cables. When there are many cables inside the distribution box, a messy situation will occur. When an operator needs to install the soft starter, the messy cables need to be checked one by one by the operator, which affects the installation of the soft starter. Summary of the Invention

[0004] The purpose of the present invention is to provide a soft starter for a single-phase photovoltaic water pump inverter and its usage method to solve the problems raised in the above background art.

[0005] To solve the above technical problems, the present invention is realized through the following technical solutions:

[0006] The present invention is a soft starter for a single-phase photovoltaic water pump inverter and its usage method, including a distribution box, the surface of the distribution box is hinged with a cabinet door, the inner wall of the distribution box is fixedly connected with a soft starter, the inner wall of the distribution box is fixedly connected with a circuit breaker, and further includes:

[0007] A limiting component, the limiting component includes a groove plate, the surface of the groove plate is fixedly connected with the inner wall of the distribution box, and the surface of the groove plate is provided with limiting holes;

[0008] A cover plate component, the cover plate component includes a cover plate, and the surface of the cover plate is fixedly connected with a fixing plate;

[0009] A fixing component, the fixing component includes a fixing block, the surface of the fixing block is fixedly connected with the surface of the cover plate, and the surface of the fixing block is fixedly connected with a telescopic frame;

[0010] An extrusion component, the extrusion component includes a mounting rod, and the end of the mounting rod is fixedly connected with the surface of the cover plate.

[0011] Further, the limiting component includes a storage board, a storage groove is formed on the surface of the storage board, a through hole is formed on the surface of the storage board, a circular hole frame is fixedly connected to the surface of the storage board, a threaded adjusting rod is fixedly connected to the inner wall of the circular hole frame, and a grip rod is fixedly connected to the surface of the threaded adjusting rod;

[0012] A sliding groove board is fixedly connected to the inner wall of the groove board, a sliding frame is fixedly connected to the inner wall of the storage board, a contact board is fixedly connected to the inner wall of the sliding frame, and a connection hole is formed in the inner wall of the storage groove.

[0013] Further, the inner wall of the storage board is slidably connected to the surface of the groove board, the inner wall of the sliding frame is slidably connected to the surface of the sliding groove board, the surface of the contact board contacts the inner wall of the sliding groove board, the end of the contact board extends to the outer end of the sliding frame, the storage board is symmetrically arranged with the groove board as the center, the number of the storage boards is two, the two storage boards are symmetrically arranged with the threaded adjusting rod as the center, and the grip rod is located at the center of the surface of the threaded adjusting rod.

[0014] Further, the cover component includes a sliding hole board, the surface of the sliding hole board is fixedly connected to the end of the fixing plate, and a positioning plate is slidably connected to the inner wall of the sliding hole board;

[0015] The number of the covers is four, the four covers are arranged in two groups, and the number of each group is two, and the two groups of covers are symmetrically arranged with the threaded adjusting rod as the center.

[0016] Further, the sliding hole board is located at the end of the fixing plate away from the cover, the surface of the cover contacts the inner wall of the storage groove, and the surface of the sliding hole board contacts the inner wall of the groove board.

[0017] Further, the fixing component includes a mounting plate, the mounting plate is fixedly connected to the surface of the telescopic frame, an elastic rod is fixedly connected to the end of the mounting plate away from the telescopic frame, and a plug board is fixedly connected to the surface of the telescopic frame;

[0018] The fixing block is located at the end of the cover away from the storage board, and the surface of the plug board contacts the inner wall of the through hole.

[0019] Further, the number of the telescopic frames is two, the two telescopic frames are symmetrically arranged with the groove board as the center, the number of the mounting plates is four, the four mounting plates are arranged in two groups, and the number of each group is two, and the elastic rod is located at the end where the two mounting plates are close to each other.

[0020] Further, the extrusion member includes an elastic frame, the end of the elastic frame is fixedly connected to the end of the mounting rod, a semi-circular frame is fixedly connected to the end of the elastic frame away from the mounting rod, and a right-angle plate is fixedly connected to the end of the semi-circular frame away from the elastic frame;

[0021] The elastic frame is located at the end of the mounting rod away from the cover plate. The surface of the right-angle plate contacts the surface of the storage plate, and the end of the right-angle plate away from the storage plate contacts the surface of the groove plate.

[0022] Further, a usage method of a soft starter for a single-phase photovoltaic water pump inverter includes the following steps:

[0023] S1: After the cable is placed inside the groove plate, the cable extends through the limiting hole into the distribution box and is connected to the soft starter, and the end of the cable away from the groove plate extends into the storage groove through the connection hole. The cable inside the storage groove extends into the distribution box through the through hole for connection and use;

[0024] S2: Push the cover plate to slide on the surface of the storage groove, and squeeze and limit the cable inside the storage groove through the cover plate to prevent the cable from popping out of the storage groove due to its toughness. When the cover plate moves, it will push the sliding hole plate through the fixing plate. When the surface of the sliding hole plate corresponds to the inner wall of the groove plate;

[0025] S3: After the cover plate is installed inside the storage groove, the telescopic frame squeezes the inside of the storage groove through the elasticity of the elastic rod to push the cover plate, improving the stability after the cover plate is installed. When the cover plate enters the storage groove, the telescopic frame will push the plug board to contact the inner wall of the through hole as the cover plate moves;

[0026] S4: When the cover plate enters the storage groove, it pushes the elastic frame to move through the mounting rod. The elastic frame pushes the right-angle plate to move towards the inside of the distribution box through the semi-circular frame, and squeezes and limits the cable exposed outside through the right-angle plate.

[0027] The present invention has the following beneficial effects:

[0028] After the soft starter is installed inside the distribution box, the soft starter is connected to the electrical components inside the distribution box through the cable. A limiting component is provided inside the distribution box to limit the cable inside the distribution box. A cover plate component is provided on the surface of the limiting component to squeeze the cable inside the limiting component by using the cover plate component to prevent the cable in the limiting component from falling off. The fixing component is used to fix the cover plate component, and the extrusion component can squeeze the cable inside the distribution box to improve the stability after the cable is installed.

[0029] After the cable of the present invention is placed inside the groove plate, the cable extends into the distribution box through the limit hole and is connected to the soft starter. One end of the cable away from the groove plate extends into the storage groove through the connection hole. The cable inside the storage groove extends into the distribution box through the through hole for connection and use. The storage plate and the groove plate cooperate with each other to limit the cable, improving the neatness of the cable inside the distribution box. When it is necessary to adjust the position of the storage plate, by twisting the center of the threaded adjustment rod through the grip rod, the end of the threaded adjustment rod will move towards the center of the distribution box, reducing the length of the cable exposed outside, which is convenient for the operator to install the cable at the connection of the soft starter.

[0030] After the cable of the present invention is installed, push the cover plate to slide on the surface of the storage groove, and the cable inside the storage groove is squeezed and limited by the cover plate to prevent the cable from popping out of the storage groove due to its toughness. When the cover plate moves, it will push the sliding hole plate to move through the fixing plate. When the surface of the sliding hole plate corresponds to the inner wall of the groove plate, press the cover plate to move into the storage groove. At this time, the sliding hole plate and the positioning plate will enter the groove plate to squeeze the cable, further limiting the cable.

[0031] After the cover plate of the present invention is installed inside the storage groove, the telescopic frame squeezes the inside of the storage groove by the elasticity of the elastic rod, improving the stability after the cover plate is installed. When the cover plate enters the storage groove, the telescopic frame will push the plug board to contact the inner wall of the through hole as the cover plate moves, using the plug board to limit the cover plate, improving the convenience during the installation of the cover plate. When it is necessary to disassemble the cover plate, directly pull out the plug board to disassemble the cover plate, improving the convenience during the disassembly of the cover plate.

[0032] When the cover plate of the present invention enters the storage groove, it pushes the elastic frame to move through the installation rod. The elastic frame pushes the right-angle plate to move into the distribution box through the semi-circular frame, and the exposed cable is squeezed and limited by the right-angle plate to prevent the cable from falling off the soft starter due to shaking.

[0033] Of course, it is not necessary for any product implementing the present invention to achieve all the above advantages simultaneously. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for describing the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0035] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0036] Figure 2Schematic cross-sectional structure diagram of the distribution box of the present invention;

[0037] Figure 3 Schematic overall structure diagram of the limit component of the present invention;

[0038] Figure 4 Another schematic structure diagram of the limit component of the present invention;

[0039] Figure 5 Schematic overall structure diagram of the cover component of the present invention;

[0040] Figure 6 Schematic overall structure diagram of the fixing component of the present invention;

[0041] Figure 7 Schematic overall structure diagram of the extrusion component of the present invention;

[0042] Figure 8 Another schematic structure diagram of the extrusion component of the present invention;

[0043] Figure 9 Schematic process structure diagram of the present invention.

[0044] In the drawings, the list of components represented by each reference numeral is as follows:

[0045] In the figure: 1, distribution box; 2, cabinet door; 3, soft starter; 4, electric switch; 5, limit component; 6, cover component; 7, fixing component; 8, extrusion component; 10, storage board; 11, through hole; 12, limit hole; 13, threaded adjusting rod; 14, storage groove; 15, groove plate; 16, round hole frame; 17, grip rod; 18, sliding frame; 19, contact plate; 20, chute plate; 21, connection hole; 30, cover plate; 31, fixing plate; 32, positioning plate; 33, sliding hole plate; 40, fixing block; 41, mounting plate; 42, elastic rod; 43, telescopic frame; 44, plug board; 50, mounting rod; 51, elastic frame; 52, semi-circular frame; 53, right-angle plate. Detailed implementation manners

[0046] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0047] Please refer to Figures 1-9 As shown, the present invention is a soft starter for a single-phase photovoltaic water pump inverter and its usage method, including a distribution box 1, a cabinet door 2 is hinged on the surface of the distribution box 1, a soft starter 3 is fixedly connected to the inner wall of the distribution box 1, an electric switch 4 is fixedly connected to the inner wall of the distribution box 1, and further includes:

[0048] The limiting component 5, the limiting component 5 includes a groove plate 15, the surface of the groove plate 15 is fixedly connected to the inner wall of the distribution box 1, and a limiting hole 12 is provided on the surface of the groove plate 15;

[0049] The cover plate component 6, the cover plate component 6 includes a cover plate 30, and a fixing plate 31 is fixedly connected to the surface of the cover plate 30;

[0050] The fixing component 7, the fixing component 7 includes a fixing block 40, the surface of the fixing block 40 is fixedly connected to the surface of the cover plate 30, and a telescopic frame 43 is fixedly connected to the surface of the fixing block 40;

[0051] The pressing component 8, the pressing component 8 includes a mounting rod 50, the end of the mounting rod 50 is fixedly connected to the surface of the cover plate 30. After the soft starter 3 is installed inside the distribution box 1 in the present invention, the soft starter 3 is connected to the electrical components inside the distribution box 1 through a cable. A limiting component 5 is provided inside the distribution box 1 to limit the cable inside the distribution box 1 through the limiting component 5. A cover plate component 6 is provided on the surface of the limiting component 5 to squeeze the cable inside the limiting component 5 by using the cover plate component 6 to prevent the cable in the limiting component 5 from falling off. The cover plate component 6 is fixed by the fixing component 7, and the pressing component 8 can squeeze the cable inside the distribution box 1 to improve the stability after the cable is installed.

[0052] The limiting component 5 includes a receiving plate 10, a receiving groove 14 is provided on the surface of the receiving plate 10, a through hole 11 is provided on the surface of the receiving plate 10, a circular hole frame 16 is fixedly connected to the surface of the receiving plate 10, a threaded adjusting rod 13 is fixedly connected to the inner wall of the circular hole frame 16, and a grip rod 17 is fixedly connected to the surface of the threaded adjusting rod 13;

[0053] A sliding groove plate 20 is fixedly connected to the inner wall of the groove plate 15, a sliding frame 18 is fixedly connected to the inner wall of the receiving plate 10, a contact plate 19 is fixedly connected to the inner wall of the sliding frame 18, and a connecting hole 21 is provided on the inner wall of the receiving groove 14.

[0054] The inner wall of the storage plate 10 is slidably connected to the surface of the groove plate 15, and the inner wall of the sliding frame 18 is slidably connected to the surface of the chute plate 20. After the cable is placed inside the groove plate 15 in the present invention, the cable extends into the distribution box 1 through the limiting hole 12 and is connected to the soft starter 3. One end of the cable away from the groove plate 15 extends into the storage groove 14 through the connection hole 21. The cable inside the storage groove 14 extends into the distribution box 1 through the through hole 11 for connection and use. The storage plate 10 and the groove plate 15 cooperate with each other to limit the cable, improving the neatness of the cable inside the distribution box 1. When the position of the storage plate 10 needs to be adjusted, by twisting the center of the threaded adjusting rod 13 through the grip rod 17, the end of the threaded adjusting rod 13 will move towards the center of the distribution box 1, reducing the length of the cable exposed outside, facilitating the operator to install the cable at the connection of the soft starter 3. The surface of the contact plate 19 contacts the inner wall of the chute plate 20, and the end of the contact plate 19 extends to the outer end of the sliding frame 18. The storage plates 10 are symmetrically arranged with the groove plate 15 as the center. The number of the storage plates 10 is two, and the two storage plates 10 are symmetrically arranged with the threaded adjusting rod 13 as the center. The grip rod 17 is located at the center of the surface of the threaded adjusting rod 13.

[0055] The cover plate component 6 includes a slide hole plate 33. The surface of the slide hole plate 33 is fixedly connected to the end of the fixing plate 31, and a positioning plate 32 is slidably connected to the inner wall of the slide hole plate 33;

[0056] The number of the cover plates 30 is four. The four cover plates 30 are set into two groups, and the number of each group is two. The two groups of cover plates 30 are symmetrically arranged with the threaded adjusting rod 13 as the center.

[0057] The slide hole plate 33 is located at the end of the fixing plate 31 away from the cover plate 30. After the cable is installed in the present invention, the cover plate 30 is pushed to slide on the surface of the storage groove 14, and the cable inside the storage groove 14 is squeezed and limited by the cover plate 30 to prevent the cable from popping out of the storage groove 14 due to its toughness. When the cover plate 30 moves, it will push the slide hole plate 33 to move through the fixing plate 31. When the surface of the slide hole plate 33 corresponds to the inner wall of the groove plate 15, the cover plate 30 is pressed to move into the storage groove 14. At this time, the slide hole plate 33 and the positioning plate 32 will enter the groove plate 15 to squeeze the cable, further limiting the cable. The surface of the cover plate 30 contacts the inner wall of the storage groove 14, and the surface of the slide hole plate 33 contacts the inner wall of the groove plate 15.

[0058] The fixing component 7 includes a mounting plate 41. The mounting plate 41 is fixedly connected to the surface of the telescopic frame 43. One end of the mounting plate 41 away from the telescopic frame 43 is fixedly connected with an elastic rod 42. The surface of the telescopic frame 43 is fixedly connected with a plug board 44;

[0059] The fixed block 40 is located at one end of the cover plate 30 away from the storage plate 10, and the surface of the insertion plate 44 contacts the inner wall of the through hole 11.

[0060] There are two telescopic frames 43, and the two telescopic frames 43 are symmetrically arranged with the groove plate 15 as the center. There are four mounting plates 41. After the cover plate 30 of the present invention is installed inside the storage groove 14, the telescopic frame 43 elastically pushes the cover plate 30 through the elastic rod 42 to squeeze the inside of the storage groove 14, improving the stability after the cover plate 30 is installed. When the cover plate 30 enters the inside of the storage groove 14, the telescopic frame 43 will push the insertion plate 44 to contact the inner wall of the through hole 11 as the cover plate 30 moves, using the insertion plate 44 to limit the position of the cover plate 30 and improving the convenience during the installation of the cover plate 30. When it is necessary to disassemble the cover plate 30, the insertion plate 44 can be directly pulled out to disassemble the cover plate 30, improving the convenience during the disassembly of the cover plate 30. The four mounting plates 41 are set into two groups, and the number of each group is two. The elastic rod 42 is located at one end where the two mounting plates 41 are close to each other.

[0061] The extrusion member 8 includes an elastic frame 51. The end of the elastic frame 51 is fixedly connected to the end of the mounting rod 50. One end of the elastic frame 51 away from the mounting rod 50 is fixedly connected to a semi-circular frame 52. One end of the semi-circular frame 52 away from the elastic frame 51 is fixedly connected to a right-angle plate 53.

[0062] The elastic frame 51 is located at one end of the mounting rod 50 away from the cover plate 30. The surface of the right-angle plate 53 contacts the surface of the storage plate 10. When the cover plate 30 of the present invention enters the inside of the storage groove 14, the elastic frame 51 is pushed to move through the mounting rod 50. The elastic frame 51 pushes the right-angle plate 53 to move into the inside of the distribution box 1 through the semi-circular frame 52, and the exposed cable is squeezed and limited by the right-angle plate 53 to prevent the cable from falling off the soft starter 3 due to shaking. One end of the right-angle plate 53 away from the storage plate 10 contacts the surface of the groove plate 15.

[0063] A method for using a soft starter of a single-phase photovoltaic water pump inverter includes the following steps:

[0064] S1: After the cable is placed inside the groove plate 15, the cable extends into the distribution box 1 through the limiting hole 12 and is connected to the soft starter 3, and one end of the cable away from the groove plate 15 extends into the storage groove 14 through the connection hole 21. The cable inside the storage groove 14 extends into the distribution box 1 through the through hole 11 for connection and use.

[0065] S2: Push the cover plate 30 to slide on the surface of the storage groove 14, and squeeze and limit the cable inside the storage groove 14 through the cover plate 30 to prevent the cable from popping out of the inside of the storage groove 14 due to its toughness. When the cover plate 30 moves, it will push the sliding hole plate 33 to move through the fixing plate 31. When the surface of the sliding hole plate 33 corresponds to the inner wall of the groove plate 15;

[0066] S3: After the cover plate 30 is installed inside the storage groove 14, the telescopic frame 43 elastically pushes the cover plate 30 through the elastic rod 42 to squeeze the inside of the storage groove 14, improving the stability after the cover plate 30 is installed. When the cover plate 30 enters the inside of the storage groove 14, the telescopic frame 43 will push the insertion plate 44 to contact the inner wall of the through hole 11 as the cover plate 30 moves;

[0067] S4: When the cover plate 30 enters the inside of the storage groove 14, it pushes the elastic frame 51 to move through the mounting rod 50. The elastic frame 51 pushes the right-angle plate 53 to move into the distribution box 1 through the semi-circular frame 52, and squeezes and limits the exposed cable through the right-angle plate 53.

[0068] During use, after installing the soft starter 3 inside the distribution box 1, the soft starter 3 is connected to the electrical components inside the distribution box 1 through a cable. A limiting component 5 is arranged inside the distribution box 1 to limit the cable inside the distribution box 1. A cover component 6 is arranged on the surface of the limiting component 5 to squeeze the cable inside the limiting component 5 to prevent the cable in the limiting component 5 from falling off. The cover component 6 is fixed by a fixing component 7. The squeezing component 8 can squeeze the cable inside the distribution box 1 to improve the stability after the cable is installed. After placing the cable inside the groove plate 15, the cable extends into the distribution box 1 through the limiting hole 12 and is connected to the soft starter 3. One end of the cable far from the groove plate 15 extends into the storage groove 14 through the connection hole 21. The cable inside the storage groove 14 extends into the distribution box 1 through the through hole 11 for connection and use. The storage plate 10 and the groove plate 15 cooperate with each other to limit the cable and improve the neatness of the cable inside the distribution box 1. When the position of the storage plate 10 needs to be adjusted, the center of the threaded adjustment rod 13 is twisted through the grip rod 17, and the end of the threaded adjustment rod 13 will move towards the center of the distribution box 1, reducing the length of the cable exposed outside, which is convenient for the operator to install the cable at the connection of the soft starter 3. After the cable is installed, the cover plate 30 is pushed to slide on the surface of the storage groove 14 to squeeze and limit the cable inside the storage groove 14 to prevent the cable from popping out of the storage groove 14 due to its toughness. When the cover plate 30 moves, it will push the sliding hole plate 33 to move through the fixing plate 31. When the surface of the sliding hole plate 33 corresponds to the inner wall of the groove plate 15, the cover plate 30 is pressed to move into the storage groove 14. At this time, the sliding hole plate 33 and the positioning plate 32 will enter the groove plate 15 to squeeze the cable, further limiting the cable. After the cover plate 30 is installed inside the storage groove 14, the telescopic frame 43 squeezes the inside of the storage groove 14 by elastically pushing the cover plate 30 through the elastic rod 42 to improve the stability after the cover plate 30 is installed. When the cover plate 30 enters the storage groove 14, the telescopic frame 43 will push the plug board 44 to contact the inner wall of the through hole 11 as the cover plate 30 moves, using the plug board 44 to limit the cover plate 30 and improving the convenience of installing the cover plate 30. When the cover plate 30 needs to be disassembled, the plug board 44 can be directly pulled out to disassemble the cover plate 30, improving the convenience of disassembling the cover plate 30. When the cover plate 30 enters the storage groove 14, it pushes the elastic frame 51 to move through the mounting rod 50. The elastic frame 51 pushes the right-angled plate 53 to move towards the inside of the distribution box 1 through the semi-circular frame 52 to squeeze and limit the cable exposed outside to prevent the cable from falling off the soft starter 3 due to shaking.

[0069] 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 embodiments described. Obviously, many modifications and variations can be made according to the content of this specification. These embodiments are selected and specifically described in this specification to better explain the principles and practical applications of the present invention, so that those skilled in the art can well understand and utilize the present invention. The present invention is only limited by the claims and their full scope and equivalents.

Claims

1. A soft starter for a single-phase photovoltaic water pump inverter, comprising a distribution box (1), a cabinet door (2) is hinged on the surface of the distribution box (1), a soft starter (3) is fixedly connected to the inner wall of the distribution box (1), and a switch (4) is fixedly connected to the inner wall of the distribution box (1), characterized in that, It further includes: A limiting component (5), the limiting component (5) includes a groove plate (15), the surface of the groove plate (15) is fixedly connected to the inner wall of the distribution box (1), and a limiting hole (12) is provided on the surface of the groove plate (15); A cover plate component (6), the cover plate component (6) includes a cover plate (30), and a fixing plate (31) is fixedly connected to the surface of the cover plate (30); A fixing component (7), the fixing component (7) includes a fixing block (40), the surface of the fixing block (40) is fixedly connected to the surface of the cover plate (30), and a telescopic frame (43) is fixedly connected to the surface of the fixing block (40); An extrusion component (8), the extrusion component (8) includes a mounting rod (50), and the end of the mounting rod (50) is fixedly connected to the surface of the cover plate (30); The limiting component (5) includes a storage plate (10); The extrusion component (8) includes an elastic frame (51), the end of the elastic frame (51) is fixedly connected to the end of the mounting rod (50), a semi-circular frame (52) is fixedly connected to the end of the elastic frame (51) away from the mounting rod (50), and a right-angle plate (53) is fixedly connected to the end of the semi-circular frame (52) away from the elastic frame (51); The elastic frame (51) is located at the end of the mounting rod (50) away from the cover plate (30), the surface of the right-angle plate (53) is in contact with the surface of the storage plate (10), and the end of the right-angle plate (53) away from the storage plate (10) is in contact with the surface of the groove plate (15); A storage groove (14) is provided on the surface of the storage plate (10), a through hole (11) is provided on the surface of the storage plate (10), a circular hole frame (16) is fixedly connected to the surface of the storage plate (10), and a threaded adjusting rod (13) is fixedly connected to the inner wall of the circular hole frame (16); The number of the cover plates (30) is set to four, the four cover plates (30) are set into two groups, and the number of each group is set to two. The two groups of cover plates (30) are symmetrically arranged with the threaded adjusting rod (13) as the center; The storage plate (10) is symmetrically arranged with the groove plate (15) as the center, the number of the storage plates (10) is set to two, and the two storage plates (10) are symmetrically arranged with the threaded adjusting rod (13) as the center; The groove plate (15) and the two storage plates (10) form an I-shaped structure.

2. The soft starter of a single-phase photovoltaic water pump inverter according to claim 1, characterized in that: A grip rod (17) is fixedly connected to the surface of the threaded adjusting rod (13); A sliding groove plate (20) is fixedly connected to the inner wall of the groove plate (15), a sliding frame (18) is fixedly connected to the inner wall of the storage plate (10), a contact plate (19) is fixedly connected to the inner wall of the sliding frame (18), and a connection hole (21) is provided on the inner wall of the storage groove (14).

3. The soft starter of a single-phase photovoltaic water pump inverter according to claim 2, characterized in that: The inner wall of the storage plate (10) is slidably connected to the surface of the groove plate (15), the inner wall of the sliding frame (18) is slidably connected to the surface of the chute plate (20), the surface of the contact plate (19) contacts the inner wall of the chute plate (20), the end of the contact plate (19) extends to the outer end of the sliding frame (18), and the grip rod (17) is located at the center of the surface of the threaded adjusting rod (13).

4. The soft starter of a single-phase photovoltaic water pump inverter according to claim 3, characterized in that: The cover plate component (6) includes a slide hole plate (33), and the surface of the slide hole plate (33) is fixedly connected to the end of the fixing plate (31). A positioning plate (32) is slidably connected to the inner wall of the slide hole plate (33).

5. The soft starter of a single-phase photovoltaic water pump inverter according to claim 4, characterized in that: The slide hole plate (33) is located at one end of the fixing plate (31) away from the cover plate (30). The surface of the cover plate (30) contacts the inner wall of the storage groove (14), and the surface of the slide hole plate (33) contacts the inner wall of the groove plate (15).

6. The soft starter of a single-phase photovoltaic water pump inverter according to claim 5, characterized in that: The fixing component (7) includes a mounting plate (41), the mounting plate (41) is fixedly connected to the surface of the telescopic frame (43), an elastic rod (42) is fixedly connected to one end of the mounting plate (41) away from the telescopic frame (43), and a plug plate (44) is fixedly connected to the surface of the telescopic frame (43); The fixing block (40) is located at one end of the cover plate (30) away from the storage plate (10), and the surface of the plug plate (44) contacts the inner wall of the through hole (11).

7. The soft starter of a single-phase photovoltaic water pump inverter according to claim 6, characterized in that: The number of the telescopic frames (43) is set to two, and the two telescopic frames (43) are symmetrically arranged with the groove plate (15) as the center. The number of the mounting plates (41) is set to four, and the four mounting plates (41) are set into two groups, and the number of each group is set to two. The elastic rod (42) is located at one end of the two mounting plates (41) close to each other.

8. The method of using a soft starter for a single-phase photovoltaic water pump inverter according to claim 7, characterized in that, It includes the following steps: S1: After the cable is placed inside the groove plate (15), the cable extends into the distribution box (1) through the limit hole (12) and is connected to the soft starter (3). One end of the cable away from the groove plate (15) extends into the storage groove (14) through the connection hole (21). The cable inside the storage groove (14) extends into the distribution box (1) through the through hole (11) for connection and use; S2: Push the cover plate (30) to slide on the surface of the storage groove (14). The cable inside the storage groove (14) is squeezed and limited by the cover plate (30) to prevent the cable from popping out of the storage groove (14) due to its toughness. When the cover plate (30) moves, it will push the slide hole plate (33) to move through the fixing plate (31). When the surface of the slide hole plate (33) corresponds to the inner wall of the groove plate (15), press the cover plate (30) to move into the storage groove (14). At this time, the slide hole plate (33) and the positioning plate (32) will enter the groove plate (15) to squeeze the cable, further limiting the cable. S3: After the cover plate (30) is installed inside the storage groove (14), the telescopic frame (43) elastically pushes the cover plate (30) through the elastic rod (42) to squeeze the inside of the storage groove (14), improving the stability of the cover plate (30) after installation. When the cover plate (30) enters the inside of the storage groove (14), the telescopic frame (43) will push the plug board (44) to contact the inner wall of the through hole (11) as the cover plate (30) moves; S4: When the cover plate (30) enters the inside of the storage groove (14), it pushes the elastic frame (51) to move through the mounting rod (50). The elastic frame (51) pushes the right-angle plate (53) to move into the distribution box (1) through the semi-circular frame (52), and the exposed cables are squeezed and limited by the right-angle plate (53).

Images