Auxiliary construction device for municipal underground pipeline

Abstract

The invention discloses an auxiliary construction device for a municipal underground pipeline, and relates to the technical field of auxiliary construction of underground pipelines, the auxiliary construction device for the municipal underground pipeline comprises a construction vehicle, a lifting frame is fixedly mounted at the top of the construction vehicle, and a motor is fixedly mounted on the surface of the construction vehicle; a conveying mechanism is arranged on the surface of the construction vehicle, the excavating device comprises a sliding shaft, a sliding box, a first connecting plate, an equipment box, a drilling barrel, a fixing plate, a double-shaft motor, a first reciprocating lead screw, a drill bit, a rotating plate, a moving plate and a hole expanding ring, and a first sliding groove is formed in the surface of the lifting frame. According to the auxiliary construction device for the municipal underground pipeline, when the drilling barrel is withdrawn, the moving plate can move in the direction away from the rotating plate under the action of soil or rock walls and drive the hole expanding ring to move, the excavated soil wall pipeline is expanded through a construction vehicle, and the space needed by pipeline laying is expanded on the basis of an original hole channel.

Description

Technical Field

[0001] The invention relates to the technical field of underground pipeline auxiliary construction, and in particular to an auxiliary construction device for municipal underground pipelines. Background Art

[0002] During the underground pipeline construction process, the use of auxiliary construction devices is crucial to ensure smooth construction, improve efficiency and ensure construction safety.

[0003] The patent with patent announcement number CN207064826U relates to an auxiliary construction device for municipal underground pipelines, including a hole expanding device and a hole cleaning device. The hole expanding device includes a hole expanding cylinder, and a number of barbs are evenly arranged on the side wall of the hole expanding cylinder. Both ends of the hole expanding cylinder are fixedly connected with steel cable joints; the hole cleaning device includes a lower base plate, and retaining plates are fixedly connected on both sides of the lower base plate. The right end of the lower base plate is fixedly connected with a sealing retaining plate, and both ends of the lower base plate are fixedly connected with steel cable joints. The beneficial effect of this patent is that it can assist the construction of municipal pipelines, effectively dredge, expand and clean the debris of the original pipe hole, and facilitate the insertion of the new pipe into the pipe hole.

[0004] In the above patent, the municipal pipeline construction is assisted by the hole expanding device and the hole cleaning device, and the original pipe hole is effectively dredged, expanded and the debris is cleaned, so as to facilitate the insertion of the new pipe into the pipe hole. However, in the process of docking the pipes, the inner wall of the docking hole may continuously drop mud and affect the docking effect, which may cause inconvenience to the subsequent work process. Therefore, an auxiliary construction device for municipal underground pipelines with the function of excavating and transporting miscellaneous soil is designed. Summary of the invention

[0005] In view of the deficiencies of the prior art, the present invention provides an auxiliary construction device for municipal underground pipelines, which solves the problems raised in the above-mentioned background technology.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: an auxiliary construction device for municipal underground pipelines, comprising a construction vehicle and an excavating device, a lifting frame is fixedly installed on the top of the construction vehicle, a motor is fixedly installed on the surface of the construction vehicle, a conveying mechanism is arranged on the surface of the construction vehicle, the excavating device comprises a sliding shaft, a sliding box, a connecting plate 1, an equipment box, a drill tube, a fixed plate, a double-axis motor, a reciprocating screw rod 1, a drill bit, a rotating plate, a moving plate and a hole expansion ring, a sliding groove 1 is opened on the surface of the lifting frame, the sliding shaft is slidably installed on the inner wall of the sliding groove 1, the sliding box is slidably installed on the circumferential surface of the output end of the motor, the connecting plate 1 is fixedly installed on the surface of the lifting frame, and the fixing rod of the equipment box is installed on the circumferential surface of the sliding shaft, The drill barrel is fixedly installed through the surface of the equipment box, the fixed plate is fixedly installed on one end of the drill barrel close to the equipment box, the dual-axis motor is fixedly installed on the surface of the fixed plate, the reciprocating screw rod is fixedly installed on the output end of the motor away from the fixed plate, the drill bit is fixedly installed on the output end of the motor and away from the reciprocating screw rod, the rotating plate is fixedly installed on the circumferential surface of the drill barrel, the surface of the rotating plate is provided with a sliding groove 2, the movable plate is slidably installed on the inner wall of the sliding groove 2, the hole expansion ring is fixedly installed through the surface of the movable plate, the excavated earth wall pipeline is expanded by a construction vehicle, and the space required for pipeline laying is expanded on the basis of the original channel. In a narrow or complex underground environment, it can help to quickly and accurately expand the excavation area and provide sufficient space for subsequent pipeline laying.

[0007] According to the above technical solution, a telescopic elastic rod is fixedly installed on the bottom of the rotating plate, the free end of the telescopic elastic rod is fixedly connected to the bottom of the movable plate, a threaded groove is provided on the circumferential surface of the output end of the motor, the sliding box is connected to the output end of the motor through a thread, and the conveying mechanism is started to drive the soil to move along its surface, so that the excavated soil will be quickly and efficiently transported to an area outside the construction site.

[0008] According to the above technical solution, a feeding port is opened on the surface of the fixed plate, the connecting plate 1 is fixedly installed on the circumferential surface of the motor output end, and the surface of the movable plate is set as a slope 1, so as to prevent the inner wall of the docking channel from continuously falling mud and affecting the docking effect during the subsequent pipeline docking process, thereby improving the overall construction progress and efficiency.

[0009] According to the above technical scheme, the cleaning device and the water spraying device are included, and the cleaning device includes a baffle, a guide plate, a sliding ring, a fixed rod 1, a sleeve plate, a sliding rod, a blade, a turntable, a fixed rod 2, a sliding plate and a scraper. The baffle is fixedly installed at the bottom of the construction vehicle, the guide plate is fixedly installed on the surface of the baffle, the sliding ring is slidably installed on the circumferential surface of the reciprocating screw rod 1, the fixed rod 1 is fixedly penetrated through the surface of the sliding ring, the sleeve plate is slidably installed on the surface of the conveying mechanism, the surface of the conveying mechanism is provided with a sliding groove 3, the sliding rod is slidably installed on the inner wall of the sliding groove 3, the blade is fixedly installed on the surface of the sleeve plate, the turntable is fixedly installed on the end of the reciprocating screw rod 1 away from the dual-axis motor, the fixed rod 2 is fixedly installed on the surface of the turntable, the sliding plate is slidably installed on the top of the guide plate, and the scraper is rotatably installed on the end of the sliding plate close to the conveying mechanism. The blade cuts large pieces of soil and gravel driven by the sleeve plate to avoid the accumulation of soil and gravel in the conveying mechanism, resulting in blockage of the conveying mechanism and reducing construction efficiency.

[0010] According to the above technical solution, the sliding rod is fixedly connected to the sleeve plate, a slide groove 1 is provided on the surface of the sleeve plate, and the fixed rod 1 is slidably connected to the inner wall of the slide groove 1 to scrape and clean the soil layer to avoid accumulation of soil on the conveying mechanism, thereby ensuring the smooth operation of the conveyor belt and improving the ability of continuous operation.

[0011] According to the above technical solution, a second slide groove is opened on the surface of the sliding plate, and the second fixed rod is slidably connected to the inner wall of the second slide groove. The accumulation of mud will increase the friction of the conveyor belt or other conveying components. In the long run, it may cause wear on the surface of the equipment, thereby further reducing the wear of the equipment and increasing the service life of the equipment.

[0012] According to the above technical solution, the water spraying device includes a water tank, a second connecting plate, a second reciprocating screw, a water pipe, a collar and an inclined block. The water tank is fixedly installed on the surface of the construction vehicle, the second connecting plate is fixedly installed on the surface of the construction vehicle, the second reciprocating screw rotates and penetrates the surface of the water tank, the water pipe is fixedly penetrated through the surface of the water tank, the collar is fixedly installed on the water pipe, and the inclined block is fixedly installed on the surface of the second connecting plate to spray water evenly onto the soil surface or the area to be excavated to help soften the soil, especially in dry or hard soil, the moisture can effectively reduce the hardness of the soil and reduce the difficulty of drill excavation.

[0013] According to the above technical solution, two water tanks are provided, two reciprocating screw rods are provided, a conveyor belt is connected between the two reciprocating screw rods, the reciprocating screw rods are connected to the connecting plate by threads, the surface of the collar is set as inclined surface one, the surface of the inclined block is set as inclined surface two, and a belt is connected between the motor and the reciprocating screw rods, which further softens the soil and increases the water spraying area, thereby further improving the water spraying efficiency.

[0014] The present invention provides an auxiliary construction device for municipal underground pipelines, which has the following beneficial effects: (1) The auxiliary construction device of the underground pipeline starts the motor, and the output end of the motor rotates to drive the sliding box to move downward. The sliding box moves downward to drive the sliding shaft to move, and the sliding shaft moves to drive the equipment box to move downward. When the drill tube is retracted, the moving plate will move away from the rotating plate under the action of the soil or rock wall and drive the expansion ring to move. The excavated soil wall pipeline is expanded by the construction vehicle, and the space required for pipeline laying is expanded on the basis of the original channel. The excavated soil will move toward the direction close to the dual-axis motor along the threaded groove, and then the soil will fall on the surface of the conveying mechanism along the fixed plate. The conveying mechanism is started to drive the soil to move along its surface, and the excavated soil will be quickly and efficiently transported to the area outside the construction site, so as to avoid the continuous falling of soil from the inner wall of the docking channel and affecting its docking effect during the subsequent pipeline docking process.

[0015] (2) The auxiliary construction device of the underground pipeline drives the sleeve to move by moving the fixed rod. The movement of the sleeve will brush off the soil attached to the inner wall of the conveying mechanism, and then fall on the surface of the conveying mechanism and be transported away. The movement of the sleeve drives the blade to move. At this time, the blade cuts large pieces of soil and gravel driven by the sleeve, thereby avoiding the accumulation of soil and gravel in the conveying mechanism, resulting in blockage of the conveying mechanism and reducing construction efficiency. The sliding plate slides to drive the scraper to move. The scraper moves to scrape off the soil attached to the surface of the conveying mechanism, scrape it off and clean it, avoiding the accumulation of soil layers on the conveying mechanism, thereby ensuring the smooth operation of the conveyor belt and improving the ability of continuous operation.

[0016] (3) The auxiliary construction device of the underground pipeline drives the reciprocating screw rod 2 to rotate through the belt rotation. Since the reciprocating screw rod 2 is connected to the connecting plate 2 by a threaded connection, the rotation of the reciprocating screw rod 2 drives the connecting plate 2 to move upward, and at the same time drives the reciprocating screw rod 2 at the other end to rotate through the conveyor belt. The water tank sprays water through the water pipe, and the water is evenly sprayed on the soil surface or the area to be excavated to help soften the soil. The movement of the connecting plate 2 drives the inclined block to move upward. The movement of the inclined block contacts and squeezes the ring to rotate. At the same time, the rotation of the ring drives the water pipe to rotate, thereby further softening the soil and increasing the area of ​​water spraying, further improving the efficiency of water spraying. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the overall internal structure of the present invention; Figure 3 It is a schematic diagram of the positional relationship between the equipment box and the drill bit of the present invention; Figure 4 For the present invention Figure 3 A schematic diagram of the structure of the middle part is enlarged; Figure 5 It is a schematic diagram of the positional relationship between the sliding ring and the reciprocating screw rod of the present invention; Figure 6 For the present invention Figure 5 The enlarged schematic diagram of the structure part B in the middle; Figure 7 This is a schematic diagram of the positional relationship between the water tank and the water pipe of the present invention; Figure 8 For the present invention Figure 7 Enlarged schematic diagram of the C structure in the middle.

[0018] In the figure: 1. construction vehicle; 2. lifting frame; 3. motor; 4. conveying mechanism; 51. sliding shaft; 52. sliding box; 53. connecting plate 1; 54. equipment box; 55. drill tube; 56. fixed plate; 57. double-axis motor; 58. reciprocating screw rod 1; 59. drill bit; 510. rotating plate; 511. moving plate; 512. hole expansion ring; 513. telescopic elastic rod; 61. baffle; 62. guide plate; 63. sliding ring; 64. fixed rod 1; 65. sleeve plate; 66. sliding rod; 67. blade; 68. turntable; 69. fixed rod 2; 610. sliding plate; 611. scraper; 71. water tank; 72. connecting plate 2; 73. reciprocating screw rod 2; 74. water pipe; 75. sleeve ring; 76. inclined block; 77. conveyor belt. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] See also Figure 1-Figure 8An embodiment of the present invention is: an auxiliary construction device for municipal underground pipelines, including a construction vehicle 1, including an excavation device, a lifting frame 2 is fixedly installed on the top of the construction vehicle 1, a motor 3 is fixedly installed on the surface of the construction vehicle 1, and a conveying mechanism 4 is arranged on the surface of the construction vehicle 1. The excavation device includes a sliding shaft 51, a sliding box 52, a connecting plate 53, an equipment box 54, a drill tube 55, a fixed plate 56, a double-axis motor 57, a reciprocating screw rod 58, a drill bit 59, a rotating plate 510, a moving plate 511 and a hole expansion ring 512. A sliding groove 1 is opened on the surface of the lifting frame 2, the sliding shaft 51 is slidably installed on the inner wall of the sliding groove 1, the sliding box 52 is slidably installed on the circumferential surface of the output end of the motor 3, the connecting plate 53 is fixedly installed on the surface of the lifting frame 2, the fixing rod of the equipment box 54 is installed on the circumferential surface of the sliding shaft 51, and the drill tube 55 is fixedly penetrated through the equipment box 5 4, a fixed plate 56 is fixedly mounted on one end of the drill tube 55 close to the equipment box 54, a dual-axis motor 57 is fixedly mounted on the surface of the fixed plate 56, a reciprocating screw rod 58 is fixedly mounted on the output end of the motor 3 away from the fixed plate 56, a drill bit 59 is fixedly mounted on the output end of the motor 3 and away from the reciprocating screw rod 58, a rotating plate 510 is fixedly mounted on the circumferential surface of the drill tube 55, a sliding groove 2 is provided on the surface of the rotating plate 510, a movable plate 511 is slidably mounted on the inner wall of the sliding groove 2, a hole expansion ring 512 is fixedly penetrated through the surface of the movable plate 511, the soil or rock wall will contact and squeeze the movable plate 511 to move in the direction close to the rotating plate 510, and at the same time, the movable plate 511 moves to drive the hole expansion ring 512 to move, and when the drill tube 55 is retracted, the movable plate 511 will move in the direction away from the rotating plate 510 under the action of the soil or rock wall and drive the hole expansion ring 512 to move.

[0021] A telescopic spring rod 513 is fixedly installed at the bottom of the rotating plate 510, and the free end of the telescopic spring rod 513 is fixedly connected to the bottom of the movable plate 511. A threaded groove is provided on the circumferential surface of the output end of the motor 3, and the sliding box 52 is connected to the output end of the motor 3 through a threaded connection. When the motor 3 is started, the output end of the motor 3 rotates to drive the sliding box 52 to move downward.

[0022] A material feeding port is provided on the surface of the fixed plate 56, and the connecting plate 53 is fixedly installed on the circumferential surface of the output end of the motor 3. The surface of the movable plate 511 is set as an inclined surface. When the drill tube 55 is digging, the soil or rock wall will contact and squeeze the movable plate 511 to move toward the direction close to the rotating plate 510. At the same time, the movement of the movable plate 511 drives the expansion ring 512 to move.

[0023] When the present embodiment is working: when the construction vehicle 1 is moving for construction, the motor 3 is started, and the output end of the motor 3 rotates to drive the sliding box 52 to move downward, and the sliding box 52 moves downward to drive the sliding shaft 51 to move, and at the same time, the sliding shaft 51 moves to drive the equipment box 54 to move downward, and the equipment box 54 moves downward to drive the drill tube 55 to move, and then when preparation is completed, the dual-axis motor 57 is started, and the output end of the dual-axis motor 57 rotates to drive the drill bit 59 to rotate. When the drill bit 59 rotates for construction, the construction vehicle 1 moves to drive the drill bit 59 to dig, and at the same time, when the drill tube 55 is digging, the soil or rock wall will contact and squeeze the moving plate 511 to move in the direction close to the rotating plate 510, and at the same time, the moving plate 511 moves to drive the expanding hole ring 512 to move, and when the drill tube 55 is retracted, the moving plate 511 will move in the soil or rock wall. Under the action of the rock wall, it moves in the direction away from the rotating plate 510 and drives the expansion ring 512 to move, and the excavated earth wall pipeline is expanded through the construction vehicle 1, and the space required for pipeline laying is expanded on the basis of the original channel. In a narrow or complex underground environment, it can help to quickly and accurately expand the excavation area and provide sufficient space for the subsequent laying of pipelines. The excavated soil will move along the threaded groove in the direction close to the dual-axis motor 57, and then the soil will fall on the surface of the conveying mechanism 4 along the fixed plate 56. The conveying mechanism 4 starts to drive the soil to move along its surface, and the excavated soil will be quickly and efficiently transported to areas outside the construction site, avoiding continuous falling of soil from the inner wall of the docking channel during the subsequent pipeline docking process and affecting its docking effect, thereby improving the overall construction progress and efficiency.

[0024] See also Figure 1-Figure 8 On the basis of the above embodiment, in another embodiment of the present invention, a cleaning device and a water spraying device are provided, wherein the cleaning device comprises a baffle 61, a guide plate 62, a sliding ring 63, a fixing rod 1 64, a sleeve plate 65, a sliding rod 66, a blade 67, a turntable 68, a fixing rod 2 69, a sliding plate 610 and a scraper 611, wherein the baffle 61 is fixedly mounted on the bottom of the construction vehicle 1, the guide plate 62 is fixedly mounted on the surface of the baffle 61, the sliding ring 63 is slidably mounted on the circumferential surface of the reciprocating screw rod 1 58, the fixing rod 1 64 is fixedly penetrated through the surface of the sliding ring 63, and the sleeve plate 65 is slidably mounted on the conveying mechanism 4 The surface of the conveying mechanism 4 is provided with a sliding groove three, the sliding rod 66 is slidably installed on the inner wall of the sliding groove three, the blade 67 is fixedly installed on the surface of the sleeve plate 65, the turntable 68 is fixedly installed on the end of the reciprocating screw rod 58 away from the dual-axis motor 57, the fixed rod 2 69 is fixedly installed on the surface of the turntable 68, the sliding plate 610 is slidably installed on the top of the guide plate 62, and the scraper 611 is rotatably installed on the end of the sliding plate 610 close to the conveying mechanism 4, the fixed rod 2 69 rotates to drive the sliding plate 610 to slide on the surface of the guide plate 62, and at the same time, the sliding plate 610 slides to drive the scraper 611 to move.

[0025] The slide rod 66 is fixedly connected to the sleeve plate 65, and a slide groove 1 is provided on the surface of the sleeve plate 65. The fixed rod 1 64 is slidably connected to the inner wall of the slide groove 1. The sleeve plate 65 moves to brush off the soil attached to the inner wall of the conveying mechanism 4, and then falls on the surface of the conveying mechanism 4 and is transported away. The movement of the sleeve plate 65 drives the blade 67 to move.

[0026] A slide groove 2 is provided on the surface of the sliding plate 610, and the fixed rod 2 69 is slidably connected to the inner wall of the slide groove 2. The rotation of the reciprocating screw rod 1 58 drives the turntable 68 to rotate, and the rotation of the turntable 68 drives the fixed rod 2 69 to rotate around the reciprocating screw rod 1 58 as the center.

[0027] The water spraying device includes a water tank 71, a second connecting plate 72, a second reciprocating screw rod 73, a water pipe 74, a collar 75 and an inclined block 76. The water tank 71 is fixedly mounted on the surface of the construction vehicle 1, the second connecting plate 72 is fixedly mounted on the surface of the construction vehicle 1, the second reciprocating screw rod 73 rotates and penetrates the surface of the water tank 71, the water pipe 74 is fixedly mounted on the surface of the water tank 71, the collar 75 is fixedly mounted on the water pipe 74, and the inclined block 76 is fixedly mounted on the surface of the second connecting plate 72. The collar 75 approaches and contacts the inclined block 76 under the movement of the water pipe 74, and at the same time, the collar 75 moves in a direction away from the inclined block 76 under the action of the inclined block 76.

[0028] There are two water tanks 71, and two reciprocating screw rods 73 are provided. A conveyor belt 77 is connected between the two reciprocating screw rods 73. The reciprocating screw rod 73 is connected to the connecting plate 72 by a thread. The surface of the collar 75 is set as inclined surface 1, and the surface of the inclined block 76 is set as inclined surface 2. A belt is connected between the motor 3 and the reciprocating screw rod 73. The rotation of the reciprocating screw rod 73 drives the water tank 71 to move downward, and at the same time drives the reciprocating screw rod 73 at the other end to rotate through the conveyor belt 77.

[0029] When the present embodiment is working, the dual-axis motor 57 is started, and the dual-axis motor 57 rotates to drive the reciprocating screw rod 58 to rotate. At the same time, the reciprocating screw rod 58 rotates to drive the sliding ring 63 to move away from the turntable 68. The movement of the sliding ring 63 drives the fixed rod 64 to move. At the same time, the movement of the fixed rod 64 drives the sleeve plate 65 to move. The movement of the sleeve plate 65 will brush off the soil attached to the inner wall of the conveying mechanism 4, and then it will fall on the surface of the conveying mechanism 4 and be transported away. The movement of the sleeve plate 65 drives the blade 67 to move. At this time, the blade 67, driven by the sleeve plate 65, cuts up large pieces of soil and gravel, thereby avoiding the accumulation of soil and gravel in the conveying mechanism 4, causing the conveying mechanism 4 to be blocked and reducing the construction efficiency. By cutting these materials, the accumulation phenomenon can be avoided and the conveying can be ensured. The mechanism 4 can work continuously and smoothly. At the same time, the reciprocating screw 58 rotates to drive the turntable 68 to rotate. The rotation of the turntable 68 drives the fixed rod 2 69 to rotate with the reciprocating screw 58 as the center. The rotation of the fixed rod 2 69 drives the sliding plate 610 to slide on the surface of the guide plate 62. At the same time, the sliding plate 610 slides and drives the scraper 611 to move. The scraper 611 moves to scrape off the soil attached to the surface of the conveying mechanism 4, scrape it off and clean it, so as to avoid the accumulation of soil layer on the conveying mechanism 4, thereby ensuring the smooth operation of the conveyor belt and improving the ability of continuous operation. The accumulation of soil will increase the friction of the conveyor belt or other conveying components. In the long run, it may cause wear on the surface of the equipment, thereby further reducing the wear of the equipment and increasing the service life of the equipment.

[0030] When the motor 3 is started, the output end of the motor 3 rotates to drive the belt to rotate, and the belt rotation drives the reciprocating screw rod 2 73 to rotate. Because the reciprocating screw rod 2 73 is connected to the connecting plate 2 72 by a threaded connection, the rotation of the reciprocating screw rod 2 73 drives the connecting plate 2 72 to move upward, and at the same time, the reciprocating screw rod 2 73 at the other end is driven to rotate through the conveyor belt 77. The water tank 71 sprays water through the water pipe 74, and the water is evenly sprayed on the soil surface or the area to be excavated to help soften the soil, especially in dry or hard soil. The water can effectively reduce the hardness of the soil and reduce the difficulty of excavation by the drill bit 59. At the same time, the movement of the connecting plate 2 72 drives the inclined block 76 to move upward, and the inclined block 76 moves to contact and squeeze the ring 75 to rotate. At the same time, the rotation of the ring 75 drives the water pipe 74 to rotate, thereby further softening the soil and increasing its water spraying area, further improving the efficiency of water spraying.

[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An auxiliary construction device for municipal underground pipelines, comprising a construction vehicle (1), characterized in that: It also includes digging devices, cleaning devices and water spraying devices; Wherein, a lifting frame (2) is fixedly mounted on the top of the construction vehicle (1), a motor (3) is fixedly mounted on the surface of the construction vehicle (1), and a conveying mechanism (4) is provided on the surface of the construction vehicle (1); The excavation device comprises a sliding shaft (51), a sliding box (52), a connecting plate (53), an equipment box (54), a drill tube (55), a fixed plate (56), a dual-axis motor (57), a reciprocating screw (58), a drill bit (59), a rotating plate (510), a movable plate (511) and a hole expansion ring (512); a sliding groove (51) is provided on the surface of the lifting frame (2); the sliding shaft (51) is slidably mounted on the inner wall of the sliding groove (51); the sliding box (52) is slidably mounted on the circumferential surface of the output end of the motor (3); the connecting plate (53) is fixedly mounted on the surface of the lifting frame (2); a fixed rod of the equipment box (54) is mounted on the circumferential surface of the sliding shaft (51); and the drill tube (55) is fixedly mounted on the surface of the lifting frame (2). The fixed plate (56) is fixedly mounted on the surface of the drill tube (55) close to the equipment box (54); the dual-axis motor (57) is fixedly mounted on the surface of the fixed plate (56); the reciprocating screw rod (58) is fixedly mounted on the output end of the motor (3) away from the fixed plate (56); the drill bit (59) is fixedly mounted on the output end of the motor (3) away from the reciprocating screw rod (58); the rotating plate (510) is fixedly mounted on the circumferential surface of the drill tube (55); a sliding groove (2) is provided on the surface of the rotating plate (510); the movable plate (511) is slidably mounted on the inner wall of the sliding groove (2); and the hole expansion ring (512) is fixedly mounted on the surface of the movable plate (511).

2. The auxiliary construction device for municipal underground pipelines according to claim 1, characterized in that: A telescopic elastic rod (513) is fixedly mounted on the bottom of the rotating plate (510), the free end of the telescopic elastic rod (513) is fixedly connected to the bottom of the moving plate (511), a thread groove is provided on the circumferential surface of the output end of the motor (3), and the sliding box (52) is connected to the output end of the motor (3) via a thread.

3. The auxiliary construction device for municipal underground pipelines according to claim 2, characterized in that: A material delivery port is provided on the surface of the fixed plate (56), the first connecting plate (53) is fixedly mounted on the circumferential surface of the output end of the motor (3), and the surface of the movable plate (511) is configured as a first inclined surface.

4. The auxiliary construction device for municipal underground pipelines according to claim 3 is characterized in that: The cleaning device comprises a baffle (61), a guide plate (62), a sliding ring (63), a fixed rod (64), a sleeve plate (65), a sliding rod (66), a blade (67), a rotating disk (68), a fixed rod (69), a sliding plate (610) and a scraper (611), wherein the baffle (61) is fixedly mounted on the bottom of the construction vehicle (1), the guide plate (62) is fixedly mounted on the surface of the baffle (61), the sliding ring (63) is slidably mounted on the circumferential surface of the reciprocating screw rod (58), the fixed rod (64) is fixedly penetrated through the surface of the sliding ring (63), and the sleeve plate (65) is fixedly mounted on the surface of the reciprocating screw rod (58). The conveying mechanism (4) is slidably mounted on the surface of the conveying mechanism (4), the surface of the conveying mechanism (4) is provided with a sliding groove three, the sliding rod (66) is slidably mounted on the inner wall of the sliding groove three, the blade (67) is fixedly mounted on the surface of the sleeve plate (65), the turntable (68) is fixedly mounted on the end of the reciprocating screw rod (58) away from the dual-axis motor (57), the fixed rod (69) is fixedly mounted on the surface of the turntable (68), the sliding plate (610) is slidably mounted on the top of the guide plate (62), and the scraper (611) is rotatably mounted on the end of the sliding plate (610) close to the conveying mechanism (4).

5. The auxiliary construction device for municipal underground pipelines according to claim 4, characterized in that: The sliding rod (66) is fixedly connected to the sleeve plate (65); a sliding groove (1) is provided on the surface of the sleeve plate (65); and the fixing rod (64) is slidably connected to the inner wall of the sliding groove (1).

6. The auxiliary construction device for municipal underground pipelines according to claim 5, characterized in that: A second slide groove is provided on the surface of the sliding plate (610), and the second fixing rod (69) is slidably connected to the inner wall of the second slide groove.

7. The auxiliary construction device for municipal underground pipelines according to claim 6, characterized in that: The water spraying device comprises a water tank (71), a second connecting plate (72), a second reciprocating screw rod (73), a water pipe (74), a collar (75) and an inclined block (76); the water tank (71) is fixedly mounted on the surface of the construction vehicle (1); the second connecting plate (72) is slidably mounted on the surface of the construction vehicle (1); the second reciprocating screw rod (73) rotates and penetrates the surface of the water tank (71); the water pipe (74) is fixedly mounted on the surface of the water tank (71); the collar (75) is fixedly mounted on the water pipe (74); and the inclined block (76) is fixedly mounted on the surface of the second connecting plate (72).

8. The auxiliary construction device for municipal underground pipelines according to claim 7, characterized in that: Two water tanks (71) are provided, two reciprocating screw rods (73) are provided, a conveyor belt (77) is connected between the two reciprocating screw rods (73), the reciprocating screw rods (73) are connected to the connecting plate (72) by threads, the surface of the collar (75) is set as inclined surface 1, the surface of the inclined block (76) is set as inclined surface 2, and a belt is connected between the motor (3) and the reciprocating screw rod (73).

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