Power cable drilling laying device

Abstract

The invention belongs to the technical field of cable laying, and particularly relates to a power cable drilling laying device which comprises a machine body, a pushing device is fixedly installed on the side wall of the machine body, a plurality of push rods spliced together are slidably installed on the side wall of the pushing device, and a motor is fixedly installed at the end, away from the pushing device, of each push rod. A soil drilling assembly and a soil scraping assembly are arranged outside the machine body; a push rod is pushed to extend through pushing equipment, a motor is pushed into soil, then a soil drilling assembly is driven to rotate through the output end of the motor, at the moment, a soil drilling strip makes contact with the soil, the soil pushes the soil drilling strip to be bent, and the part, extending out of a drilling plate, of the soil drilling strip is attached to the side wall of the drilling plate; one side of the sawteeth on the soil drilling strip can be in full contact with the soil, a hole is drilled in the soil through rotation of the soil drilling assembly, and meanwhile, the resistance of the soil drilling assembly during movement is effectively reduced through guiding of a drilling plate; the problem that an existing drilling device is poor in hole opening efficiency is solved.

Description

Technical Field

[0001] The invention relates to the technical field of cable laying, in particular to a power cable drilling and laying device. Background Art

[0002] Horizontal directional drilling technology is a technology used for the construction of small-diameter flexible pipes such as water pipes. This construction does not require excavation of the ground. The construction steps are generally divided into guide drilling, multiple hole expansions, and pipe pulling back. The hole is expanded after drilling. At the same time, a cable is connected to the rear end of the expansion drill bit and the cable is laid inside the opened hole to complete the cable drilling and laying operation.

[0003] After searching, the Chinese patent with publication number CN116591604A discloses a horizontal directional drill, including a drill body, the drill body including a connecting disk and a rod body symmetrically arranged on both sides of the connecting disk, a plurality of arc-shaped drill disks are arranged in a circular array on the rod bodies on both sides, the drill disks are provided with steel teeth for cooperating with the drill body to expand the hole, and an adjustment unit is provided between the drill disk and the rod body for changing the outer diameter size when the drill body rotates. By using the drill disks on the rod body symmetrically arranged on the drill body, forward drilling expansion and back pulling expansion can be achieved when expanding the hole. At the same time, an adjustment unit is provided between the drill disk and the rod body. After one expansion, the adjustment unit can be used to adjust the distance between the drill disk and the rod body when pulling back and forward drilling expansion, so that when a larger diameter expansion drill bit needs to be replaced, the process of replacing the drill bit is omitted, thereby avoiding the difficulty of alignment required for manual replacement of the expansion drill bit, and reducing the model specifications of the expansion drill bit that need to be prepared.

[0004] In the above-mentioned prior art solution, a plurality of steel teeth are provided on the side wall of the drill disc. When the drill disc rotates, the soil is drilled through the steel teeth. Since the two ends of the drill disc are horizontal, the drill disc encounters greater resistance during its movement, making it more difficult to move and resulting in lower drilling efficiency. Summary of the invention

[0005] In order to solve the above technical problems, the present invention proposes a power cable drilling and laying device, which pushes the push rod to extend by pushing the device, pushes the motor into the soil, and then drives the drilling assembly to rotate through the output end of the motor. At this time, the drilling bar contacts the soil, and the soil will push the drilling bar to bend, so that the part of the drilling bar extending from the drill plate is fitted with the side wall of the drill plate, and one side of the serrations on the drilling bar can fully contact the soil. Then, a hole is drilled inside the soil through the rotation of the drilling assembly. At the same time, under the guidance of the drill plate, the resistance of the drilling assembly during movement is effectively reduced.

[0006] The technical solution to achieve the purpose of the present invention is: a power cable drilling and laying device, including a body, a pushing device is fixedly installed on the side wall of the body, a plurality of push rods spliced ​​together are slidably installed on the side wall of the pushing device, a motor is fixedly installed on the end of the push rod away from the pushing device, a drilling assembly is arranged on the outside of the body, the drilling assembly includes a transmission shaft fixedly installed on the output shaft of the motor, connecting balls are fixedly installed at both ends of the transmission shaft, a plurality of connecting grooves equidistantly distributed around the circumference are opened on the ends of the side walls of the two connecting balls that are close to each other, a drilling plate is arranged inside the connecting groove, and a connecting rotating shaft is fixedly installed on the side wall of the drilling plate Axle, the connecting shaft is rotatably installed in the connecting groove, connecting heads are fixedly installed at both ends of the side walls of the transmission shaft, a hanging rod is fixedly installed on the side wall far away from the connecting ball of the motor, a scraping assembly is arranged inside the drill plate, the scraping assembly includes a plurality of mounting plates respectively and staggeredly fixedly installed on the side walls of the two connecting heads, a plurality of drilling strips are fixedly installed at equal intervals on the side walls of the plurality of mounting plates, a drilling strip is also fixedly installed on one end of the side walls of the plurality of drill plates close to the connecting ball, and the plurality of drilling strips are distributed in a manner that the farther away from the connecting ball, the longer the length, the plurality of drilling strips slide through the side walls of the adjacent drill plates and extend outward, and the plurality of drilling strips are all serrated.

[0007] Preferably, an adjustment component is provided on the outside of the transmission shaft, and the adjustment component includes an adjustment screw sleeved on the side wall of the transmission shaft, and a plurality of connecting sleeves are provided on the outside of the adjusting screw, and the plurality of connecting sleeves are respectively located between two drill plates in the same direction, and extension rods are slidably installed at both ends of the connecting sleeves, and a limit block is fixedly installed on the side wall of the extension rod, and the limit block is slidably installed inside the connecting sleeve.

[0008] Preferably, a connecting block 1 is fixedly mounted on a side wall of the drill plate close to the extension rod, and the connecting block 1 is rotatably mounted on a nearby end of the extension rod.

[0009] Preferably, the thread directions of the two ends of the side walls of the adjusting screw are opposite, and threaded sleeves are threadedly installed at both ends of the adjusting screw. The side walls of the two threaded sleeves are fixedly installed with mutually staggered connecting blocks 2, and the side walls of multiple connecting sleeves close to the adjusting screw are also fixedly installed with connecting blocks 2. Multiple connecting rods are arranged on the outside of the adjusting screw, and the two ends of the multiple connecting rods are respectively rotatably installed on the side walls of two adjacent connecting blocks 2.

[0010] Preferably, a positioning frame is fixedly mounted on one end of the mounting plate away from the connecting head, and one end of the positioning frame away from the drilling plate is fixedly mounted on the side wall of the adjusting screw.

[0011] Preferably, a through slot is provided on the side wall of the positioning frame, and the connecting rod slides through the inside of the adjacent through slot.

[0012] Preferably, a positioning assembly is provided on the outside of the adjusting screw, and the positioning assembly includes a limit plate fixedly mounted on the side wall of the adjusting screw, a plurality of linkage grooves are opened on the wall surface on the side of the limit plate away from the adjusting screw, a plurality of splines are fixedly mounted on both ends of the side wall of the transmission shaft, a push plate is slidably mounted on the side wall of the spline, and linkage teeth aligned with the linkage grooves are fixedly mounted on the side wall of the push plate.

[0013] Preferably, a positioning plate is fixedly mounted on the side wall of the transmission shaft, an extension spring is sleeved on the side wall of the transmission shaft, and two ends of the extension spring are respectively fixedly connected to a side wall surface close to the positioning plate and the push plate.

[0014] Preferably, a rotating block is fixedly mounted at the center position of the side wall of the adjusting screw.

[0015] Compared with the prior art, the present invention has the following significant advantages: First, the present invention pushes the push rod to extend by pushing the device, pushes the motor into the soil, and then drives the soil drilling component to rotate through the output end of the motor. At this time, the soil drilling bar contacts the soil, and the soil will push the soil drilling bar to bend, so that the part of the soil drilling bar extending out of the drill plate fits with the side wall of the drill plate, and one side of the serrations on the soil drilling bar can fully contact the soil. The soil drilling bar will bend and fit with the side wall of the drill plate under the pressure of the soil, and then a hole will be drilled inside the soil through the rotation of the soil drilling component. At the same time, under the guidance of the drill plate, the resistance of the soil drilling component when moving is reduced; the problem of poor hole opening efficiency of the existing drilling device is solved.

[0016] Secondly, the present invention rotates the rotating block to rotate the adjusting screw, and then the two threaded sleeves move toward the adjacent side, so that the connecting rod pushes the connecting sleeve to move upward, and the drill plate rotates around the connecting shaft in the direction of outward expansion, and the two extension rods inside the connecting sleeve extend outward, and the end of the drill plate connected to the extension rod rotates around the connecting block to adjust the inclination angle of the drill plate, thereby achieving the effect of conveniently adjusting the hole opening radius.

[0017] Thirdly, in the present invention, when the inclination angle of the drill plate is small, the resistance generated by the soil drilling assembly during movement is small, and the rotation speed of the drill plate is fast. Therefore, during the rotation of the drill plate, the soil drilling bar expands outward at a larger angle under the influence of centrifugal force. Therefore, the soil drilling bar can open a larger hole during the rotation. When the drill plate expands, the resistance encountered by the soil drilling assembly during movement becomes larger. Therefore, the rotation speed of the soil drilling assembly is reduced, and the soil drilling bar is less affected by the centrifugal force. Therefore, the soil drilling bar is subjected to a smaller outward expansion force, and the distance the soil drilling bar extends outward is smaller, thereby reducing the resistance when the soil drilling bar contacts the soil, reducing the load of the motor, and making the rotation speed of the drill plate faster, thereby improving the hole opening efficiency.

[0018] Fourthly, the present invention utilizes the elasticity of the extension spring to push the push plate toward the limit plate, so that the linkage tooth can be inserted into the linkage groove to ensure the stability of the position of the push plate. When the transmission shaft rotates, the adjusting screw can rotate synchronously with the transmission shaft. By rotating the adjusting screw and the transmission shaft synchronously, the angle change during rotation can be avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further explained below in conjunction with the accompanying drawings and embodiments: Figure 1 It is a schematic diagram of the overall structure of the power cable drilling and laying device of the present invention; Figure 2 It is a schematic diagram of the overall structure of the soil drilling assembly of the present invention; Figure 3 It is a schematic diagram of the overall structure of the adjusting screw of the present invention; Figure 4 It is a schematic diagram of the expansion structure of the drill plate of the present invention; Figure 5 It is a schematic diagram of the internal structure of the limiting plate of the present invention; Figure 6 It is a schematic diagram of the position of the connecting shaft of the present invention; Figure 7 It is a schematic diagram of the internal structure of the connecting sleeve of the present invention.

[0020] Description of reference numerals: 1. Machine body; 21. Pushing device; 22. Push rod; 23. Motor; 31. Transmission shaft; 32. Connecting ball; 33. Hanging rod; 34. Connecting groove; 35. Drill plate; 36. Connecting head; 37. Connecting shaft; 41. Adjusting screw; 42. Rotating block; 43. Connecting sleeve; 44. Connecting block one; 45. Threaded sleeve; 46. Connecting block two; 47. Connecting rod; 48. Extension rod; 49. Limiting block; 51. Limiting plate; 52. Linkage groove; 53. Push plate; 54. Linkage tooth; 55. Spline; 56. Positioning plate; 57. Extension spring; 61. Positioning frame; 62. Mounting plate; 63. Drilling strip; 64. Through groove. DETAILED DESCRIPTION

[0021] The present invention is described in detail below, and the technical solutions in the embodiments of the present invention are clearly and completely described. 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.

[0022] The present invention provides a power cable drilling and laying device through improvement. The technical solution of the present invention is: like Figure 1-Figure 7As shown, a power cable drilling and laying device comprises a body 1, a pushing device 21 is fixedly installed on the side wall of the body 1, a plurality of push rods 22 spliced ​​together are slidably installed on the side wall of the pushing device 21, a motor 23 is fixedly installed on the end of the push rod 22 away from the pushing device 21, a drilling assembly is arranged outside the body 1, the drilling assembly comprises a transmission shaft 31 fixedly installed on the output shaft of the motor 23, connecting balls 32 are fixedly installed at both ends of the transmission shaft 31, and the ends of the two connecting balls 32 close to the side walls are A plurality of connection grooves 34 are provided, and a drill plate 35 is arranged inside the connection groove 34. A connection shaft 37 is fixedly installed on the side wall of the drill plate 35. The connection shaft 37 is rotatably installed inside the connection groove 34. Connectors 36 are fixedly installed at both ends of the side wall of the transmission shaft 31. The rotation range of the drill plate 35 is limited by the connector 36, and the drill plate 35 is supported at the same time to ensure the stability of the position of the drill plate 35. A hanging rod 33 is fixedly installed on the side wall of the connection ball 32 away from the motor 23. The rod 33 allows the drilling assembly to hang a cable, and the cable is laid inside the drilled hole. The drilling assembly is installed on the output shaft of the motor 23, and then the push rod 22 is extended by the pushing device 21 to push the motor 23 into the soil. Then, the drilling assembly is driven to rotate by the output end of the motor 23, so that the drilling assembly drills a hole in the soil, which is convenient for inserting the cable. The interior of the drill plate 35 is provided with a scraping assembly, which includes a plurality of mounting plates 62 respectively and staggeredly fixedly installed on the side walls of the two connectors 36, and a plurality of A plurality of soil drilling strips 63 are fixedly installed on the side walls of the mounting plate 62 at equal intervals. A plurality of soil drilling strips 63 are also fixedly installed on the side walls of the plurality of drilling plates 35 at one end close to the connecting ball 32. The plurality of soil drilling strips 63 are distributed in a manner that their lengths increase as they are farther away from the connecting ball 32. The plurality of soil drilling strips 63 slide through the side walls of the adjacent drilling plates 35 and extend outward. The plurality of soil drilling strips 63 are all in a serrated shape. By extending the soil drilling assembly into the soil, the motor 23 drives the soil drilling assembly to rotate, the soil drilling strips 63 come into contact with the soil, and then a hole is drilled inside the soil.

[0023] like Figure 2-Figure 7As shown, an adjustment component is arranged on the outside of the transmission shaft 31, and the adjustment component includes an adjustment screw 41 which is sleeved on the side wall of the transmission shaft 31, and a rotating block 42 is fixedly installed at the center position of the side wall of the adjustment screw 41; the rotating block 42 facilitates the staff to rotate the adjustment screw 41; a plurality of connecting sleeves 43 are arranged on the outside of the adjustment screw 41, and the plurality of connecting sleeves 43 are respectively located between two drill plates 35 in the same direction, and an extension rod 48 is slidably installed on both ends of the connecting sleeve 43, and a limit block 49 is fixedly installed on the side wall of the extension rod 48, and the limit block 49 is slidably installed inside the connecting sleeve 43; by sliding the limit block 49 inside the connecting sleeve 43, the sliding range of the extension rod 48 is limited, so as to prevent the extension rod 48 from detaching from the inside of the connecting sleeve 43; a connecting block 44 is fixedly installed on the wall surface of one side of the drill plate 35 close to the extension rod 48, and the connecting block A 44 is rotatably mounted on a nearby end of the extension rod 48, and the thread directions of the two ends of the side wall of the adjusting screw 41 are opposite. Both ends of the adjusting screw 41 are threadedly mounted with threaded sleeves 45, and the side walls of the two threaded sleeves 45 are fixedly mounted with staggered connecting blocks 2 46. A side wall surface of multiple connecting sleeves 43 close to the adjusting screw 41 is also fixedly mounted with connecting blocks 2 46. The outside of the adjusting screw 41 is provided with multiple connecting rods 47, and the two ends of the multiple connecting rods 47 are rotatably mounted on the side walls of two nearby connecting blocks 2 46 respectively; by rotating the rotating block 42, the adjusting screw 41 is rotated, and then the two threaded sleeves 45 move to the nearby side, and the connecting rod 47 therefore pushes the connecting sleeve 43 to move upward, and the drill plate 35 therefore rotates around the connecting shaft 37 in the direction of outward expansion, and the size of the drill plate 35 is adjusted, thereby achieving the effect of adjusting the opening radius.

[0024] like Figure 2-Figure 6 As shown, a positioning frame 61 is fixedly installed on the end of the mounting plate 62 away from the connecting head 36, and the end of the positioning frame 61 away from the drilling plate 35 is fixedly installed on the side wall of the adjusting screw 41. A through groove 64 is opened on the side wall of the positioning frame 61, and the connecting rod 47 slides through the inside of the adjacent through groove 64; the end of the mounting plate 62 away from the connecting head 36 is fixed by the positioning frame 61, and the mounting plate 62 is further reinforced to ensure the stability of the position of the mounting plate 62. By passing the connecting rod 47 through the inside of the through groove 64, it is convenient for the connecting rod 47 to push the position of the connecting sleeve 43, so as to facilitate the adjustment of the angle of the drilling plate 35.

[0025] like Figure 2-Figure 5As shown, a positioning assembly is arranged outside the adjusting screw 41, and the positioning assembly includes a limit plate 51 fixedly mounted on the side wall of the adjusting screw 41, and a plurality of linkage grooves 52 are provided on the wall surface of the limit plate 51 away from the adjusting screw 41. A plurality of splines 55 are fixedly mounted on both ends of the side wall of the transmission shaft 31, and a push plate 53 is slidably mounted on the side wall of the spline 55. A linkage tooth 54 aligned with the linkage groove 52 is fixedly mounted on the side wall of the push plate 53; the linkage tooth 54 is engaged with the linkage groove 52 by pushing the push plate 53 to move. Inside the groove 52, when the transmission shaft 31 rotates, the adjusting screw 41 can rotate synchronously with the transmission shaft 31; a positioning plate 56 is fixedly installed on the side wall of the transmission shaft 31, and an extension spring 57 is sleeved on the side wall of the transmission shaft 31, and the two ends of the extension spring 57 are respectively fixedly connected to the positioning plate 56 and the side wall surface close to the push plate 53; by utilizing the elasticity of the extension spring 57, the push plate 53 is pushed close to the limit plate 51, so that the linkage tooth 54 can be stuck in the inside of the linkage groove 52, ensuring the stable position of the push plate 53.

[0026] The specific working method is as follows: by installing the soil drilling assembly on the output shaft of the motor 23, and then pushing the push rod 22 to extend through the pushing device 21, pushing the motor 23 into the soil, and then driving the soil drilling assembly to rotate through the output end of the motor 23, at this time, the soil drilling strip 63 contacts with the soil, and the soil will push the soil drilling strip 63 to bend, so that the part of the soil drilling strip 63 extending from the drill plate 35 fits with the side wall of the drill plate 35, and one side of the sawtooth on the soil drilling strip 63 can fully contact with the soil, and the soil drilling strip 63 will bend and contact with the drill under the pressure of the soil. The side wall of the plate 35 is fitted, and a hole is drilled inside the soil by rotating the soil drilling assembly. Since the inclination angle of the drill plate 35 is small, the resistance generated by the soil drilling assembly when moving is small, and the rotation speed of the drill plate 35 is fast. Therefore, during the rotation of the drill plate 35, the soil drilling strip 63 expands outward at a larger angle under the influence of centrifugal force. Therefore, the soil drilling strip 63 can open a larger hole during the rotation. By rotating the rotating block 42, the adjusting screw 41 is rotated, and then the two threaded sleeves 45 move to the adjacent side to connect. The rod 47 thus pushes the connecting sleeve 43 to move upward, and the drill plate 35 thus rotates around the connecting shaft 37 in the direction of outward expansion. The two extension rods 48 inside the connecting sleeve 43 extend outward, and the end of the drill plate 35 connected to the extension rod 48 rotates around the connecting block 44 to adjust the inclination angle of the drill plate 35. When the drill plate 35 expands outward, the resistance encountered by the soil drilling assembly during movement becomes greater, so the rotation speed of the soil drilling assembly decreases, and the centrifugal force on the soil drilling strip 63 is less affected, so the soil drilling strip 63 is subjected to the force of outward expansion. The distance that the drilling strip 63 extends outward is small, which reduces the resistance of the drilling plate 35 when it rotates. The end of the mounting plate 62 away from the connecting head 36 is fixed by the positioning frame 61, and the mounting plate 62 is further reinforced to ensure the stability of the position of the mounting plate 62. The elasticity of the extension spring 57 is used to push the push plate 53 toward the limit plate 51, so that the linkage tooth 54 can be stuck in the linkage groove 52 to ensure the stability of the position of the push plate 53. When the transmission shaft 31 rotates, the adjusting screw 41 can rotate synchronously with the transmission shaft 31.

[0027] The technical means disclosed in the solution of the present invention are not limited to the technical means disclosed in the above technical means, but also include technical solutions composed of equivalent replacement of the above technical features. Matters not covered in the present invention belong to the common knowledge of those skilled in the art.

Claims

1. A power cable drilling and laying device, comprising a body (1), a pushing device (21) fixedly mounted on a side wall of the body (1), a plurality of push rods (22) spliced ​​together are slidably mounted on the side wall of the push rod (21), a motor (23) fixedly mounted on one end of the push rod (22) away from the push device (21), characterized in that: The body (1) is provided with a soil drilling assembly on the outside. The soil drilling assembly includes a transmission shaft (31) fixedly mounted on the output shaft of the motor (23). Connecting balls (32) are fixedly mounted on both ends of the transmission shaft (31). The ends of the side walls of the two connecting balls (32) close to each other are provided with a plurality of connecting grooves (34) distributed equidistantly around the circumference. A drilling plate (35) is provided inside the connecting groove (34). A connecting shaft (37) is fixedly mounted on the side wall of the drilling plate (35). The connecting shaft (37) is rotatably mounted inside the connecting groove (34). Connecting heads (36) are fixedly mounted on both ends of the side wall of the transmission shaft (31). The connecting balls (32) away from the motor (23) are provided with connecting heads (36). A hanging rod (33) is fixedly mounted on the side wall of the drill plate (35), a scraping assembly is arranged inside the drill plate (35), and the scraping assembly comprises a plurality of mounting plates (62) respectively and staggeredly fixedly mounted on the side walls of the two connecting heads (36), a plurality of drilling strips (63) are fixedly mounted on the side walls of the plurality of mounting plates (62) at equal intervals, a drilling strip (63) is also fixedly mounted on one end of the side walls of the plurality of drill plates (35) close to the connecting ball (32), and the plurality of drilling strips (63) are distributed in such a manner that the farther away from the connecting ball (32), the longer the length of the plurality of drilling strips (63) is, the plurality of drilling strips (63) slide through the side walls of the adjacent drill plates (35) and extend outwards, and the plurality of drilling strips (63) are all in a sawtooth shape.

2. A power cable drilling and laying device according to claim 1, characterized in that: An adjustment component is arranged outside the transmission shaft (31), the adjustment component comprising an adjustment screw (41) sleeved on the side wall of the transmission shaft (31), a plurality of connection sleeves (43) are arranged outside the adjustment screw (41), the plurality of connection sleeves (43) are respectively located between two drill plates (35) in the same direction, extension rods (48) are slidably mounted on both ends of the connection sleeves (43), a limit block (49) is fixedly mounted on the side wall of the extension rod (48), and the limit block (49) is slidably mounted inside the connection sleeve (43).

3. A power cable drilling and laying device according to claim 2, characterized in that: A connecting block 1 (44) is fixedly mounted on a wall surface of one side of the drilling plate (35) close to the extension rod (48), and the connecting block 1 (44) is rotatably mounted on a proximal end of the extension rod (48).

4. A power cable drilling and laying device according to claim 3, characterized in that: The threads at both ends of the side wall of the adjusting screw (41) are in opposite directions. Both ends of the adjusting screw (41) are threadedly mounted with threaded sleeves (45). The side walls of the two threaded sleeves (45) are fixedly mounted with mutually staggered connecting blocks (46). The side wall surfaces of the plurality of connecting sleeves (43) close to the adjusting screw (41) are also fixedly mounted with connecting blocks (46). The outside of the adjusting screw (41) is provided with a plurality of connecting rods (47). The ends of the plurality of connecting rods (47) are respectively rotatably mounted on the side walls of two adjacent connecting blocks (46).

5. A power cable drilling and laying device according to claim 4, characterized in that: A positioning frame (61) is fixedly mounted on one end of the mounting plate (62) away from the connector (36), and an end of the positioning frame (61) away from the drilling plate (35) is fixedly mounted on the side wall of the adjusting screw (41).

6. A power cable drilling and laying device according to claim 5, characterized in that: A through slot (64) is formed on the side wall of the positioning frame (61), and the connecting rod (47) slides through the inside of the adjacent through slot (64).

7. A power cable drilling and laying device according to claim 2, characterized in that: The adjusting screw (41) is provided with a positioning assembly on the outside thereof. The positioning assembly comprises a limit plate (51) fixedly mounted on the side wall of the adjusting screw (41). A plurality of linkage grooves (52) are provided on a wall surface of the limit plate (51) away from the adjusting screw (41). A plurality of splines (55) are fixedly mounted on both ends of the side wall of the transmission shaft (31). A push plate (53) is slidably mounted on the side wall of the spline (55). A linkage tooth (54) aligned with the linkage groove (52) is fixedly mounted on the side wall of the push plate (53).

8. The power cable drilling and laying device according to claim 7, characterized in that: A positioning plate (56) is fixedly mounted on the side wall of the transmission shaft (31), and an extension spring (57) is sleeved on the side wall of the transmission shaft (31). Two ends of the extension spring (57) are respectively fixedly connected to the positioning plate (56) and a side wall surface close to the push plate (53).

9. The power cable drilling and laying device according to claim 2, characterized in that: A rotating block (42) is fixedly mounted at the center of the side wall of the adjusting screw rod (41).

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