A backfill soil sorting device for construction of a lightning protection grounding body of a power engineering

Abstract

The application discloses a backfill soil sorting device for lightning protection grounding body construction of electric power engineering, which comprises a rack, a vibrating motor arranged on the rack, a screen and a material pulling mechanism arranged on the rack, the screen has two layers of meshes, the distance between the two layers of meshes is greater than one time of the aperture of the screen, the grid lines of the two layers of meshes are oppositely inclined, and the centers of the grids of the two layers of meshes are staggered with each other; the screen is arranged in an inclined mode, two inclined edges of the screen are respectively provided with lower edge plates; the material pulling mechanism comprises a material pulling assembly and a reciprocating driving piece for driving the material pulling assembly to horizontally and reciprocally move, the material pulling assembly comprises a mounting seat and a plurality of damping rollers, the mounting seat is provided with a rotating driving piece for driving the plurality of damping rollers to synchronously rotate, the rotating directions of two adjacent damping rollers are opposite, and the two adjacent damping rollers can roll the rod-shaped materials inserted on the screen. The application can reduce the mixing of rod-shaped materials such as dry branches and root hairs into the backfill soil of lightning protection grounding, and can influence the lightning protection grounding effect.

Description

A soil sorting device for backfill soil during the construction of lightning protection grounding electrodes in power engineering Technical Field

[0001] This application relates to the field of auxiliary equipment for engineering construction, and in particular to a backfill soil sorting device for the construction of lightning protection grounding electrodes in power engineering. Background Technology

[0002] Power system grounding engineering is a fundamental overvoltage protection device used to prevent damage to power equipment and personnel from operational overvoltages and external lightning strikes. A good grounding system and low grounding resistance are effective measures to limit power system overvoltages. To control grounding resistance, the soil used for lightning protection grounding backfill needs to be screened to remove large stones, construction debris, etc., thereby reducing air gaps in the soil and between the soil and the grounding electrode.

[0003] Backfill soil may contain a large amount of dead plant branches and roots. During the process of sieving the soil with a sieve, sometimes dead plant branches and roots pass through the sieve holes, causing the dead plant branches to be mixed into the backfill soil. The rod-shaped materials such as dead plant branches and roots will affect the compaction of the backfill soil and have an adverse effect on the grounding effect of the lightning protection grounding body. Summary of the Invention

[0004] In order to reduce the possibility of dead branches, roots, and other rod-shaped materials being mixed into the backfill soil for lightning protection grounding, which could affect the effectiveness of lightning protection grounding, this application provides a backfill soil sorting device for the construction of lightning protection grounding bodies in power engineering.

[0005] This application provides a backfill soil sorting device for the construction of lightning protection grounding electrodes in power engineering, which adopts the following technical solution:

[0006] A backfill soil sorting device for lightning protection grounding electrode construction in power engineering includes a frame equipped with a vibrating motor, a screen, and a material extraction mechanism. The screen has two layers of mesh, the distance between the two layers being greater than twice the screen aperture. The mesh edges of the two layers are inclined relative to each other, and the centers of the meshes are staggered. The screen is inclined, and lower side plates are respectively provided on both inclined sides. The frame is equipped with a lower movable baffle located on the lower side of the screen, which is used to block material from the surface of the screen. The material extraction mechanism... The structure includes a material pulling assembly and a reciprocating drive for driving the material pulling assembly to move horizontally back and forth. The material pulling assembly includes a mounting base and multiple damping rollers. The damping rollers are arranged vertically or at an incline. The multiple damping rollers are sequentially rotatably mounted on the mounting base along a straight line. The mounting base is provided with a rotary drive for driving the multiple damping rollers to rotate synchronously. The rotation directions of two adjacent damping rollers are opposite. Two adjacent damping rollers can roll and feed rod-shaped materials inserted on the screen. The mounting base is provided with a receiving plate for receiving the rod-shaped materials rolled and fed by two adjacent damping rollers.

[0007] By adopting the above technical solution, when using the backfill soil sorting device for soil sorting, the soil is poured onto a screen. With the vibration of the vibrating motor, soil particles meeting the particle size standard pass through the two layers of the screen and are sieved off. Gravel, clods, and other particles larger than the screen mesh size are retained on the screen by the lower side plate and the lower movable baffle. Subsequently, the lower baffle is removed, allowing the gravel, clods, and other particles on the screen to be discharged from the lower side of the screen. During the soil sieving process, twigs, roots, and other rod-shaped materials carried in the soil may insert into the mesh of the screen. Because the mesh openings of the upper and lower layers of the screen are staggered and the edges of the two layers are relatively inclined, the rod-shaped materials cannot pass through both layers simultaneously, keeping them upright on the screen. After the gravel and clods on the screen are discharged, a material-pulling mechanism moves along the surface of the screen. The damping roller of the pulling mechanism uses friction damping to roll the rod-shaped materials inserted on the screen onto a receiving plate, thus removing them from the screen. This achieves the purpose of separating twigs, roots, and other materials from the soil, reducing the amount of twigs and roots mixed into the backfill soil, and minimizing their impact on the compaction of the backfill soil. This helps ensure the backfill soil's lightning protection grounding function.

[0008] Optionally, the damping roller is inclined, the receiving plate is located on the inclined upward side of the damping roller, and the edge of the receiving plate near the damping roller is located below the lower end face of the damping roller.

[0009] By adopting the above technical solution, the damping roller is tilted, so that the lower end face of the damping roller is tilted, and the lower end face of the damping roller has a larger distribution range along the height direction, so that the receiving plate can be staggered with the lower end face of the damping roller in the horizontal direction during installation.

[0010] Optionally, the receiving plate is gradually inclined downward in a direction away from the damping roller, and side plates are respectively provided on two opposite sides of the receiving plate. A limiting plate is hinged between the two side plates. The lower edge of the limiting plate is lower than the lower side of the receiving plate. The frame is provided with a blocking rod, which is used to force the limiting plate to flip in the horizontal direction. The side plate is provided with an elastic reset member, which is used to force the limiting plate to abut against the lower side of the receiving plate.

[0011] By adopting the above technical solution, after the damping roller delivers the rod-shaped material to the receiving plate, the rod-shaped material slides away from the damping roller along the surface of the receiving plate and accumulates in the angled area between the limiting plate and the receiving plate. When the material pulling mechanism moves away from the screen and touches the blocking rod, the blocking rod forces the limiting plate to rotate in the horizontal direction, causing the rod-shaped material on the receiving plate to slide off the receiving plate and be unloaded.

[0012] Optionally, a material gap is formed between two adjacent damping rollers. The material gap is divided into a material gathering gap and a material repulsion gap according to the roller feeding direction. The roller feeding direction of the material gathering gap is towards the receiving plate, and the roller feeding direction of the material repulsion gap is away from the receiving plate. The mounting base is provided with a plurality of guide members. The guide members are located on the side of the damping roller away from the receiving plate. The guide members are used to shield the material repulsion gap. The guide members have an outwardly convex guide surface. The guide surface is away from the damping roller. The guide surface is used to guide the rod-shaped material on the screen to the material gathering gap.

[0013] By adopting the above technical solution, the material gathering gap between adjacent damping rollers can roll rod-shaped materials, while the material repulsion gap cannot roll rod-shaped materials. By setting a guide, the guide guides the rod-shaped materials inserted on the screen to the material gathering gap, reducing the situation where the rod-shaped materials inserted on the screen fall into the material repulsion gap, so that the material pulling mechanism can remove the rod-shaped materials on the screen as much as possible.

[0014] Optionally, the frame is provided with a screening grid, the screening grid is inclined and located above the screen, the two inclined sides of the screening grid are respectively provided with upper side plates, the frame is provided with an upper movable baffle, the upper movable baffle is located on the lower side of the screening grid, and the upper movable baffle is used to block the material on the surface of the screening grid.

[0015] By adopting the above technical solution, the screening grid can remove larger stones, concrete blocks and other materials from the soil, reducing the impact of larger stones, concrete blocks and other materials on the screen when they fall onto the screen.

[0016] Optionally, the frame is provided with an upper guide chute and a lower guide chute. The upper guide chute is used to receive the material on the screen grid, and the lower guide chute is used to receive the material on the screen. The guiding directions of the upper guide chute and the lower guide chute are opposite.

[0017] By adopting the above technical solution, the material on the screen grid is discharged through the upper guide chute, and the material on the screen is discharged through the lower guide chute. The upper and lower guide chute can guide the material to a position further away from the center of the backfill soil sorting device, so that the material discharged from the screen grid and the material discharged from the screen are as far away from the soil screened off the screen as possible, and the soil screened off the screen has a larger storage space.

[0018] Optionally, the frame is equipped with wheels.

[0019] By adopting the above technical solution, as the space below the backfill soil sorting device is gradually occupied by the soil screened off by the screen, the backfill soil sorting device can be moved to an open space on the side using its wheels, so that the backfill soil sorting device can continue to screen the soil.

[0020] Optionally, auxiliary support wheels are installed on the lower side of both the upper guide chute and the lower guide chute.

[0021] By adopting the above technical solution, the upper and lower guide troughs are supported by auxiliary support wheels, which helps the backfill soil sorting device to move more smoothly.

[0022] Optionally, the auxiliary support wheel is provided with an elastic buffer, and the auxiliary support wheel is installed to the upper guide trough or the lower guide trough through the elastic buffer.

[0023] By adopting the above technical solution, the elastic buffer can make the contact between the auxiliary support wheel and the ground more gentle, enabling the backfill soil sorting device to adapt to the movement of uneven ground.

[0024] Optionally, the frame is hinged to a feeding guide plate. One side of the feeding guide plate is hinged to the frame, and the other side is connected to the frame by a height adjustment component. The side of the feeding guide plate closest to the height adjustment component is designated as the movable side. The height adjustment component is used to adjust the height position of the movable side of the feeding guide plate. When the movable side of the feeding guide plate is at its lowest position, the feeding guide plate tilts away from the hinged side. When the movable side of the feeding guide plate is at its highest position, the feeding guide plate is in a horizontal state. The feeding guide plate is a corrugated plate, and the texture of the corrugated plate is set along the tilt direction of the feeding guide plate. The lower edge of the feeding guide plate is located directly above the screen grid, and a horizontal distance of 10-15 cm is left between it and the outlet of the screen grid.

[0025] By adopting the above technical solution, before soil sorting in the backfill soil sorting device, the feeding guide plate is adjusted to a horizontal state using a height adjustment device. Then, the soil to be sorted is first poured onto the feeding guide plate. Under the vibration of the vibrating motor, the feeding guide plate can arrange the rod-shaped materials in the soil along the corrugated pattern of the feeding guide plate. After the soil on the feeding guide plate has been vibrated for a certain period of time, the feeding guide plate is adjusted to an inclined state using the height adjustment device, so that the soil on the feeding guide plate gradually slides onto the feeding grid. During the sliding process of the rod-shaped materials in the soil, the effective contact length between the materials and the feeding guide plate is longer, allowing the rod-shaped materials to slide a greater distance, which is beneficial for separating larger diameter rod-shaped materials in the soil in advance.

[0026] In summary, this application includes at least one of the following beneficial technical effects:

[0027] During the process of sieving soil using a screen, rod-shaped materials such as branches and roots carried in the soil will insert into the screen mesh, remaining upright on the screen. The material pulling mechanism moves along the surface of the screen, and the damping roller of the material pulling mechanism uses friction damping to roll the rod-shaped materials inserted on the screen to the receiving plate, thus achieving the purpose of separating the branches, roots and other materials in the soil, which helps to ensure the lightning protection grounding function of the backfill soil.

[0028] The material on the screen grid is discharged through the upper guide chute, and the material on the screen is discharged through the lower guide chute. The upper and lower guide chutes can guide the material to a position further away from the center of the backfill soil sorting device, so that the material discharged from the screen grid and the material discharged from the screen are as far away from the soil screened off the screen as possible, so that the soil screened off the screen has a larger stockpile space. Attached Figure Description

[0029] Figure 1 is a schematic diagram of the overall structure of this embodiment.

[0030] Figure 2 is an enlarged view of point A in Figure 1.

[0031] Figure 3 is a schematic diagram of the material extraction component in this embodiment when the protective cover is removed.

[0032] Figure 4 is a schematic diagram illustrating the relative positional relationship between the guide and the gap between the rollers in this embodiment.

[0033] Explanation of reference numerals in the attached figures:

[0034] 1. Frame; 11. Traveling wheels; 12. Auxiliary support wheels; 13. Elastic buffer; 14. Upper guide chute; 15. Lower guide chute; 2. Vibration motor; 3. Screen; 31. Lower side plate; 32. Lower movable baffle; 4. Screening grid; 41. Upper side plate; 42. Upper movable baffle; 5. Feeding guide plate; 51. Height adjustment component; 511. Cam; 5111. Rotating shaft; 512. Movable pin; 513. Pin seat; 6. Material pulling mechanism; 1. Material pulling assembly; 611. Mounting base; 612. Damping roller; 62. Reciprocating drive component; 63. Rotary drive component; 631. Motor; 632. Drive gear; 633. Driven gear; 64. Receiving plate; 641. Side plate; 642. Limiting plate; 643. Blocking rod; 644. Elastic reset component; 65. Roller gap; 651. Material gathering gap; 652. Material repulsion gap; 66. Guide component; 661. Guide surface; 67. Protective cover. Detailed Implementation

[0035] The present application will be further described in detail below with reference to Figures 1-4.

[0036] This application discloses a backfill soil sorting device for the construction of lightning protection grounding electrodes in power engineering. Referring to Figure 1, the backfill soil sorting device for the construction of lightning protection grounding electrodes in power engineering includes a frame 1, a vibrating motor 2, a screen 3 and a screening grid 4, with the screening grid 4 located above the screen 3. The screen 3 and the screening grid 4 are inclined in opposite directions. The two inclined sides of the screen 3 are respectively provided with lower side plates 31, and the two inclined sides of the screening grid 4 are respectively provided with upper side plates 41. The frame 1 is provided with an upper movable baffle 42 and a lower movable baffle 32. The lower movable baffle 32 is located on the lower side of the screen 3 and is used to block the material on the surface of the screen 3. The upper movable baffle 42 is located on the lower side of the screening grid 4 and is used to block the material on the surface of the screening grid 4. The frame 1 is equipped with an upper guide chute 14 and a lower guide chute 15. The upper guide chute 14 is used to receive materials on the screening grid 4, and the lower guide chute 15 is used to receive materials on the screen 3. The guiding directions of the upper guide chute 14 and the lower guide chute 15 are opposite. The bottom of the frame 1 is equipped with wheels 11, which allow the backfill soil sorting device to move.

[0037] When the backfill soil sorting device screens the soil, the screening grid 4 first removes larger solid materials such as stones and concrete blocks from the soil, and the screen 3 then removes smaller fine stone particles from the soil, thus filtering out smaller soil particles. After the upper movable baffle 42 is opened, the material on the screening grid 4 is discharged through the upper guide chute 14, and the material on the screen 3 is discharged through the lower guide chute 15 after the lower movable baffle 32 is opened. The upper guide chute 14 and the lower guide chute 15 guide the material in opposite directions.

[0038] Referring to Figure 1, the upper movable baffle 42 and the lower movable baffle 32 are vertically slidably connected to the frame 1. The upper surface of the screening grid 4 can serve as the limiting surface of the upper movable baffle 42; the upper surface of the screen 3 can serve as the limiting surface of the lower movable baffle. The upper movable baffle 42 and the lower movable baffle 32 can move upward to complete the unloading action of the screening grid 4 and the screen 3. The upper movable baffle 42 and the lower movable baffle 32 can be operated manually or equipped with a dedicated lifting drive structure.

[0039] In addition to being installed by sliding connection, the upper movable baffle 42 and the lower movable baffle 32 can also be installed by hinge connection combined with locking pin.

[0040] Referring to Figure 1, auxiliary support wheels 12 are installed on the lower side of both the upper guide chute 14 and the lower guide chute 15. The auxiliary support wheels 12 are equipped with elastic buffers 13, which are helical compression springs. The auxiliary support wheels 12 are installed on the upper guide chute 14 or the lower guide chute 15 through the elastic buffers 13.

[0041] Referring to Figures 1 and 2, the frame 1 is hinged to a feeding guide plate 5. One side of the feeding guide plate 5 is hinged to the frame 1. The hinged side of the feeding guide plate 5 is away from the high side of the screening grid 4. A height adjustment component 51 is connected between the side of the feeding guide plate 5 away from the hinged side and the frame 1. The side of the feeding guide plate 5 near the height adjustment component 51 is designated as the movable side. The movable side of the feeding guide plate 5 is close to the high side of the screening grid 4. The height adjustment component 51 includes a cam 511. The cam 511 has a rotating shaft 5111. The rotating shaft 5111 of the cam 511 is rotatably connected to the frame 1. During the rotation of the cam 511, the height position of the movable side of the feeding guide plate 5 can be adjusted.

[0042] When the movable side of the feeding guide plate 5 is at its lowest position, the feeding guide plate 5 tilts away from the hinge side. When the movable side of the feeding guide plate 5 is at its highest position, the feeding guide plate 5 is in a horizontal state. The cam 511 is provided with a movable pin 512, which is parallel to the rotating shaft 5111. A pin seat 513 is fixedly provided on the lower surface of the feeding guide plate 5. The pin seat 513 is provided with a pin hole for the movable pin 512 to be inserted. When the movable pin 512 is inserted into the pin hole, the movable side of the feeding guide plate 5 is at its highest position.

[0043] The feeding guide plate 5 is a corrugated plate, and the texture of the corrugated plate is set along the inclined direction of the feeding guide plate 5; the lower edge of the feeding guide plate 5 is located directly above the screen grid 4, and there is a horizontal distance of 10-15 cm between it and the discharge port of the screen grid 4.

[0044] Before soil sorting in the backfill soil sorting device, the feeding guide plate 5 is adjusted to a horizontal state using the height adjustment component 51. Then, the soil to be sorted is poured onto the feeding guide plate 5. Under the vibration of the vibration motor, the feeding guide plate 5 can arrange the rod-shaped materials in the soil along the corrugated pattern of the feeding guide plate 5. After the soil on the feeding guide plate 5 has been vibrated for a certain period of time, the feeding guide plate 5 is adjusted to an inclined state using the height adjustment component 51, so that the soil on the feeding guide plate 5 gradually slides onto the feeding grid. During the sliding process of the rod-shaped materials in the soil, the effective contact length between them and the feeding guide plate 5 is longer, which allows the rod-shaped materials to slide a greater distance, thus facilitating the early separation of larger diameter rod-shaped materials in the soil.

[0045] The screen 3 has two layers of mesh. The distance between the two layers is greater than twice the aperture of the screen 3 but less than twice the aperture. The edges of the meshes of the two layers are relatively inclined, and the centers of the meshes are staggered. Because the meshes of the two layers of screen 3 are staggered and the edges are relatively inclined, some plant roots, stems, and dead branches in the soil, after penetrating the upper mesh, find it difficult to continue through the lower mesh. This allows plant roots, stems, and dead branches in the soil to be retained on the screen 3 in a vertical manner.

[0046] Referring to Figures 1 and 3, the frame 1 is provided with a material pulling mechanism 6. The material pulling mechanism 6 includes a material pulling component 61 and a reciprocating drive component 62. The reciprocating drive component 62 is a linear module, a cylinder, or an electric cylinder. The material pulling component 61 includes a mounting base 611 and multiple damping rollers 612. The mounting base 611 is mounted above the screen 3 via the reciprocating drive component 62. The surface of the damping roller 612 is provided with a rubber layer. The damping roller 612 is inclined. Multiple damping rollers 612 are sequentially rotated and mounted on the mounting base 611 along a straight line. The arrangement direction of the damping rollers 612 is perpendicular to the driving direction of the reciprocating drive component 62.

[0047] Mounting base 611 is provided with a rotary drive 63 for driving multiple damping rollers 612 to rotate synchronously. The rotary drive 63 includes a motor 631, the output shaft of which is provided with a drive gear 632. The upper end of each damping roller 612 is provided with a driven gear 633. The driven gears 633 of two adjacent damping rollers 612 mesh with each other. The drive gear 632 meshes with one of the driven gears 633. The motor 631 drives each damping roller 612 to rotate simultaneously through the drive gear 632 and the driven gear 633. The rotation directions of two adjacent damping rollers 612 are opposite. Two adjacent damping rollers 612 can roll and feed rod-shaped materials inserted on the screen 3. Mounting base 611 is provided with a protective cover 67, which covers the drive gear 632 and the driven gear 633, thus protecting them.

[0048] The mounting base 611 is fixedly provided with a receiving plate 64. The receiving plate 64 is located on the upward inclined side of the damping roller 612. The edge of the receiving plate 64 near the damping roller 612 is located below the lower end face of the damping roller 612. The receiving plate 64 is used to receive the rod-shaped material rolled by two adjacent damping rollers 612.

[0049] Referring to Figures 3 and 4, a material gap 65 is formed between two adjacent damping rollers 612. The material gap 65 is divided into a material gathering gap 651 and a material repulsion gap 652 according to the roller feeding direction. The roller feeding direction of the material gathering gap 651 is towards the receiving plate 64, and the roller feeding direction of the material repulsion gap 652 is away from the receiving plate 64. The mounting base 611 is provided with several guide members 66. The guide members 66 are located on the side of the damping roller 612 away from the receiving plate 64. Each guide member 66 corresponds to a material repulsion gap 652. The guide member 66 is used to shield the corresponding material repulsion gap 652. The guide member 66 has an outwardly convex guide surface 661. The guide surface 661 is used to guide the rod-shaped material on the surface of the screen 3 to the material gathering gap 651. The guide surface 661 is a V-shaped surface or an arc surface. The guide surface 661 is away from the damping roller 612.

[0050] The receiving plate 64 gradually tilts downwards in the direction away from the damping roller 612. Side plates 641 are provided on two opposite sides of the receiving plate 64. A limiting plate 642 is hinged between the two side plates 641. The lower edge of the limiting plate 642 is lower than the lower side of the receiving plate 64. The frame 1 is provided with a blocking rod, which is used to force the limiting plate 642 to flip horizontally. The side plate 641 is provided with an elastic reset member 644, which is used to force the limiting plate 642 to abut against the lower side of the receiving plate 64. The elastic reset member 644 is an elastic rope or a spring.

[0051] The material extraction mechanism 6 moves along the surface of the screen 3, causing the damping roller 612 of the extraction mechanism 6 to use frictional damping to roll the rod-shaped material inserted on the screen 3 onto the receiving plate 64, thereby removing the rod-shaped material inserted on the screen 3 and achieving the purpose of separating materials such as branches and roots from the soil. After the damping roller 612 rolls the rod-shaped material onto the receiving plate 64, the rod-shaped material slides away from the damping roller 612 along the surface of the receiving plate 64 and accumulates in the angled area between the limiting plate 642 and the receiving plate 64. When the extraction mechanism 6 moves away from the screen 3 and touches the blocking rod, the blocking rod forces the limiting plate 642 to rotate horizontally, causing the rod-shaped material on the receiving plate 64 to slide off and be unloaded.

[0052] The implementation principle of the backfill soil sorting device for power engineering lightning protection grounding electrode construction in this embodiment is as follows: When sorting soil using the backfill soil sorting device, the soil is poured onto the feeding guide plate 5. After being sorted and guided by the feeding guide plate 5, the soil slides down from the feeding guide plate 5 onto the screening grid 4. During this process, some longer rod-shaped materials in the soil are separated from the soil first. After the soil passes through the screening grid 4, larger stones, concrete blocks, etc., are separated from the soil. The soil that has passed through the screening grid 4 falls onto the screen 3, where the screen 3 further screens the soil. Soil that meets the particle size standard is screened off by the screen 3 after passing through two layers of mesh. Subsequently, the upper movable baffle 42 and the lower movable baffle 32 are removed, allowing the screening grid 4 to be discharged through the upper guide chute 14, and the remaining material on the screen 3 to be discharged through the lower guide chute 15.

[0053] During the soil screening process using screen 3, rod-shaped materials such as branches and roots carried in the soil remain upright and inserted into screen 3. In this case, after the gravel and soil clods on screen 3 have been discharged, the material pulling mechanism 6 moves horizontally along the surface of screen 3, causing the damping roller 612 of the material pulling mechanism 6 to use friction damping to roll the rod-shaped materials inserted into screen 3 onto receiving plate 64, thereby removing the rod-shaped materials from screen 3. This achieves the purpose of separating materials such as branches and roots in the soil, reducing the mixing of branches and roots into the backfill soil, and reducing the impact of branches and roots on the compaction of the backfill soil, which helps to ensure the lightning protection grounding function of the backfill soil.

[0054] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A backfill soil sorting device for the construction of lightning protection grounding electrodes in power engineering, characterized in that, The system includes a frame (1), which is equipped with a vibration motor (2), a screen (3), and a material extraction mechanism (6). The screen (3) has two layers of mesh, the distance between the two layers of mesh being greater than twice the aperture of the screen (3). The mesh edges of the two layers of mesh are relatively inclined, and the centers of the meshes of the two layers of mesh are staggered. The screen (3) is inclined, and each of the two inclined sides of the screen (3) is provided with a lower side plate (31). The frame (1) is provided with a lower movable baffle (32), which is located on the lower side of the screen (3) and is used to block the material on the surface of the screen (3). The material extraction mechanism (6) includes a material extraction component (61) and a mechanism for driving the material extraction component (61). The reciprocating drive (62) moves horizontally back and forth. The material feeding assembly (61) includes a mounting base (611) and a plurality of damping rollers (612). The damping rollers (612) are arranged vertically or at an incline. The plurality of damping rollers (612) are sequentially mounted on the mounting base (611) along a straight line. The mounting base (611) is provided with a rotary drive (63) for driving the plurality of damping rollers (612) to rotate synchronously. The rotation directions of two adjacent damping rollers (612) are opposite. The two adjacent damping rollers (612) can roll and feed rod-shaped materials inserted on the screen (3). The mounting base (611) is provided with a receiving plate (64) for receiving rod-shaped materials rolled and fed by two adjacent damping rollers (612).

2. The backfill soil sorting device for the construction of lightning protection grounding electrodes in power engineering according to claim 1, characterized in that: The damping roller (612) is inclined, and the receiving plate (64) is located on the inclined upward side of the damping roller (612). The edge of the receiving plate (64) near the damping roller (612) is located below the lower end face of the damping roller (612).

3. The backfill soil sorting device for the construction of lightning protection grounding electrodes in power engineering according to claim 1, characterized in that: The receiving plate (64) gradually tilts downward in a direction away from the damping roller (612). The receiving plate (64) has side plates (641) on two opposite sides. The two side plates (641) are hinged together with a limiting plate (642). The lower edge of the limiting plate (642) is lower than the lower side of the receiving plate (64). The frame (1) is provided with a blocking rod (643). The blocking rod (643) is used to force the limiting plate (642) to flip in the horizontal direction. The side plate (641) is provided with an elastic reset member (644). The elastic reset member (644) is used to force the limiting plate (642) to abut against the lower side of the receiving plate (64).

4. The backfill soil sorting device for the construction of lightning protection grounding electrodes in power engineering according to claim 1, characterized in that: A material gap (65) is formed between two adjacent damping rollers (612). The material gap (65) is divided into a material gathering gap (651) and a material repulsion gap (652) according to the roller feeding direction. The material gathering gap (651) is fed towards the receiving plate (64), and the material repulsion gap (652) is fed away from the receiving plate (64). The mounting base (611) is provided with a plurality of guide members (66). The guide members (66) are located on the side of the damping roller (612) away from the receiving plate (64). The guide members (66) are used to shield the material repulsion gap (652). The guide members (66) have an outwardly convex guide surface (661). The guide surface (661) is away from the damping roller (612). The guide surface (661) is used to guide the rod-shaped material on the screen (3) to the material gathering gap (651).

5. The backfill soil sorting device for the construction of lightning protection grounding electrodes in power engineering according to claim 1, characterized in that: The frame (1) is provided with a screening grid (4), which is inclined and located above the screen (3). The two inclined sides of the screening grid (4) are respectively provided with upper side plates (41). The frame (1) is provided with an upper movable baffle (42), which is located on the lower side of the screening grid (4) and is used to block the material on the surface of the screening grid (4).

6. A backfill soil sorting device for the construction of lightning protection grounding electrodes in power engineering according to claim 5, characterized in that: The frame (1) is provided with an upper guide trough (14) and a lower guide trough (15). The upper guide trough (14) is used to receive the material on the screen grid (4), and the lower guide trough (15) is used to receive the material on the screen (3). The guiding directions of the upper guide trough (14) and the lower guide trough (15) are opposite.

7. A backfill soil sorting device for the construction of lightning protection grounding electrodes in power engineering according to claim 6, characterized in that: The frame (1) is equipped with wheels (11).

8. A backfill soil sorting device for the construction of lightning protection grounding electrodes in power engineering according to claim 7, characterized in that: Auxiliary support wheels (12) are installed on the lower side of both the upper guide trough (14) and the lower guide trough (15).

9. A backfill soil sorting device for the construction of lightning protection grounding electrodes in power engineering according to claim 8, characterized in that: The auxiliary support wheel (12) is provided with an elastic buffer (13), and the auxiliary support wheel (12) is installed to the upper guide trough (14) or the lower guide trough (15) through the elastic buffer (13).

10. A backfill soil sorting device for the construction of lightning protection grounding electrodes in power engineering according to claim 1, characterized in that: The frame (1) is hinged to a feeding guide plate (5). One side of the feeding guide plate (5) is hinged to the frame (1), and the other side is connected to the frame (1) by a height adjustment component (51). The side of the feeding guide plate (5) closest to the height adjustment component (51) is designated as the movable side. The height adjustment component (51) is used to adjust the height position of the movable side of the feeding guide plate (5). When the movable side of the feeding guide plate (5) is at its lowest position, the... The feeding guide plate (5) is inclined away from the hinge side. When the movable side of the feeding guide plate (5) is at the high point, the feeding guide plate (5) is in a horizontal state. The feeding guide plate (5) is a corrugated plate, and the texture of the corrugated plate is set along the inclined direction of the feeding guide plate (5). The lower edge of the feeding guide plate (5) is located directly above the screen grid (4), and there is a horizontal distance of 10-15 cm between it and the outlet of the screen grid (4).

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