A road rainwater and sewage pipe laying device

Abstract

The present invention relates to the technical field of municipal pipeline construction, and in particular to a road rainwater and sewage pipeline laying device, comprising a support gate seat located on a groove, a lifting mechanism is arranged under the support gate seat, the lifting mechanism comprises lifting frames arranged on the left and right sides, a front supporting mechanism is arranged on the front side of the lifting frame, a sliding support is arranged between the two lifting frames, the sliding support comprises a slide plate, a rear supporting mechanism is arranged above the slide plate, and a scraping mechanism is arranged below the slide plate opposite to the rear supporting mechanism; a laser transmitter and a laser receiver are arranged at the left and right ends of the rear side of the slide plate; the distance between the laser transmitter and the laser receiver relative to the scraping mechanism is equal to twice the flared length of the pipeline. The laser transmitter and the laser receiver are used as positioning, the lifting frame drops the pipeline into the groove, and the scraping mechanism scrapes the crushed sand and gravel into a shallow groove. When laying the pipeline, there is no need for a crane to lift the pipeline into the groove, and there is no need for manual trenching and auxiliary alignment, so the laying efficiency is improved and the degree of automation is high.

Description

Technical Field

[0001] The invention relates to the technical field of municipal pipeline construction, and in particular to a road rainwater and sewage pipeline laying device. Background Art

[0002] During municipal road construction, rainwater and sewage pipes are buried on both sides to collect and discharge rainwater and sewage on the road, prevent rainwater from accumulating in low-lying areas of the city, and reduce the occurrence of urban waterlogging during the rainy season. Generally, trenches are first dug on both sides of the road with an excavator, and then the pipes are placed into the trenches one by one, and the pipes in the trenches are aligned and spliced ​​to form a whole pipeline, and finally backfilled with soil.

[0003] The common pipeline construction method in the prior art is to first lay a layer of crushed sand and gravel on the trench, which is used to support the pipeline on the one hand and to ensure the slope on the other hand so that the water in the pipeline can flow smoothly; then the pipeline is tied with ropes, and a hanging point is reserved. The workers hang the hanging point on the crane and use the crane to hang the pipeline section by section into the trench; at the same time, in order to ensure the connection between the pipelines, the pipe opening at one end of the pipeline design is enlarged, that is, one end is large and the other end is small (such as a concrete pipe) to facilitate docking and sealing; after the pipeline is hung into the trench, it is necessary to manually dig a shallow trench horizontally on the sand and gravel below the front and rear pipeline interfaces, such as Figure 1 As shown, the expansion of the pipeline is placed as a margin, and then the two pipelines are manually aligned and spliced. After splicing, the lifting rope and other tools are released, and the crane moves further to repeat the above installation process. Therefore, in the existing rolling laying process, the crane supports the pipeline into the trench through several lifting points, and then digs the trench manually and assists in alignment. Not only is the stability of the suspended pipeline difficult to ensure, it is easy to swing and slip and injure people, and safety accidents are prone to occur. In addition, the pipeline installation efficiency is very low, there are many workers on site, it is not conducive to management, and the automation is poor.

[0004] Chinese invention patent CN116447390A discloses a pipeline laying device for road construction in municipal construction, including a crane arm, a suspension rope 1 is fixedly connected below the crane arm, a load-bearing plate is fixedly connected below the suspension rope 1, a mounting plate 1 is connected below the mounting plate, and a mounting plate 2 is connected below the mounting plate 1. The installed road can be clamped by the clamping arm 2 by stretching the sliding rod, and the two clamping arms are aligned parallel to the mounting plate 2, so that the installed pipeline located in the front is aligned with the pipeline to be installed clamped at the rear side when tightening, which is convenient for subsequent operation. The sliding rod is further stretched to retract the adjustment plate into the interior of the mounting plate 2, thereby reducing the distance between the pipeline to be installed at the rear and the installed pipeline, thereby directly completing the docking, thereby increasing the speed of pipeline installation, while avoiding human traction, improving the safety of on-site construction, and reducing safety hazards. Chinese invention patent CN118640327A discloses a municipal road pipeline construction and laying device, including a lifting bracket and a positioning bracket, a coaxial clamping structure is provided on the inner side of the positioning bracket, a lower pipe adjustment structure is connected to the top of the lifting bracket, a two-axis sliding structure is provided on the lifting bracket, and a horizontal sliding structure is provided at the bottom of the lifting bracket and the positioning bracket respectively; by changing the hoisting position of the crane, the original cooperation process between the crane and the ground personnel is transformed into the crane only transporting materials, and the pipeline is docked through special ground equipment, thereby reducing the cooperation process with the crane, and the positioning bracket is set with the installed pipeline, so that the ground personnel can quickly and accurately complete the positioning work of the rear pipeline, and at the same time use the lower pipe adjustment structure to control the pipeline to the position, which saves time and effort and is convenient to operate. However, none of them solves the above-mentioned problems that stability is difficult to ensure during pipeline laying, safety accidents are prone to occur, efficiency is very low, and automation is poor. Summary of the invention

[0005] The present invention is to overcome the shortcomings of the above-mentioned prior art and provide a road rainwater and sewage pipe laying device. The present invention drops the pipe onto a lifting frame, uses a laser transmitter and a laser receiver as positioning, and then drops the pipe into the groove through the lifting frame. The slide plate can adjust the position of the rear support mechanism and the scraping mechanism according to the length of the pipe. The crushed sand and gravel are scraped out of the shallow groove by the scraping mechanism. When laying the pipe, there is no need for a crane to lift the pipe into the groove, and there is no need for manual trenching and auxiliary alignment, which reduces accidents, improves laying efficiency, and has a high degree of automation.

[0006] The technical solution adopted by the present invention to solve its technical problems is: a road rainwater and sewage pipe laying device, including a supporting gate seat located on a groove, a lifting mechanism is arranged under the supporting gate seat, the lifting mechanism includes lifting frames arranged on left and right sides, a front supporting mechanism is arranged on the front side of the lifting frame, a sliding support is arranged between the two lifting frames, the sliding support includes a slide plate, a rear supporting mechanism is arranged above the slide plate, and a scraping mechanism is arranged under the slide plate opposite to the rear supporting mechanism; a laser transmitter and a laser receiver are arranged at the left and right ends of the rear side of the slide plate; the distance between the laser transmitter and the laser receiver relative to the scraping mechanism is equal to twice the flaring length of the pipe.

[0007] Preferably, a limiter is also provided in the middle of the slide plate.

[0008] Preferably, the front support mechanism includes a horizontally arranged slide seat and a slide rod, the slide rod is slidably connected to the slide seat, one end of the slide rod is provided with a support block, and the other end is connected to a push cylinder.

[0009] Preferably, the rear support mechanism comprises a slideway and two moving blocks opposite to the slideway, the moving blocks are provided with an arc-shaped support roller frame, and the support roller frame is provided with a plurality of rollers arranged along the axial direction.

[0010] Preferably, the scraping mechanism includes a connecting frame and a conveyor plate chain, the connecting frame is arranged on the front side of the slide board, and the upper end of the connecting frame is connected to the slide board, and the lower end is connected to the conveyor plate chain, the conveyor plate chain is located directly below the slide board, and a plurality of scraping knives are circumferentially arranged on the conveyor plate chain.

[0011] Preferably, the scraping knife includes an inclined plate knife and a straight plate knife, the inclined plate knife is obliquely arranged on the conveying plate chain, the straight plate knife is connected to the rear end of the inclined plate knife and extends to the rear side of the conveying plate chain; the inclined plate knife is in the shape of an inverted right triangle, and the hypotenuse faces the rear side.

[0012] Preferably, the conveyor plate chain includes a chain plate that surrounds a circle, rotating rollers located at both ends of the chain plate, and an intermediate support plate between the two rotating rollers for supporting the chain plate, and the rotating rollers are driven to rotate by a driver.

[0013] Preferably, the sliding support further comprises a guide rod and a screw rod which are respectively arranged on two lifting frames, one end of the screw rod is connected to a driving motor, and the slide plate is provided with a slider which is slidably connected to the guide rod and the screw rod respectively.

[0014] Preferably, the slide plate is a U-shaped plate.

[0015] Preferably, the lifting mechanism further comprises a vertical rod and a lifter supporting the door seat, the lifting frame is slidably connected to the vertical rod, and the output end of the lifter is connected to the lifting frame.

[0016] Compared with the prior art, the advantages and positive effects of the present invention are:

[0017] (1) The pipeline is lowered onto the lifting frame, the laser transmitter and the laser receiver are blocked, the slide is moved backward until the laser receiver receives the signal from the laser transmitter, and then the pipeline located on the front support mechanism and the rear support mechanism is lowered into the groove through the lifting frame, and the support gate seat is moved so that the expansion is aligned with the rear end of the previous pipeline. The slide can adjust the position of the rear support mechanism according to the length of the pipeline, and also adjust the position of the scraping mechanism so that it is located at the rear end of the pipeline. The shallow groove of the crushed sand and gravel is scraped out by the scraping mechanism to reach the length of the two expansions, so that the rear pipeline is pushed forward. After docking with the previous pipeline, the rear half of the shallow groove is left, and the front half is still under the pipeline, which is convenient for the next pipeline docking. When laying the pipeline, there is no need to use a crane to lift the pipeline into the groove, and there is no need to dig trenches manually or assist in alignment, which reduces the occurrence of safety accidents, improves the efficiency of pipeline laying, facilitates on-site laying operations and management, and has a high degree of automation.

[0018] (2) Place the slide outside the rear end of the pipeline, loosen the front support mechanism and the rear support mechanism, lift the slide upward through the lifting mechanism, and when it reaches the middle of the pipeline, drive the slide forward to push the pipeline forward for docking, which saves other structures, simplifies operation, and has a better use effect.

[0019] (3) A limiter is also provided in the middle of the slide. When the pipe is hoisted onto the lifting frame and contacts the limiter on the slide, the front support mechanism and the rear support mechanism clamp and support the pipe, thereby lowering the height of the pipe and facilitating its subsequent placement on the crushed sand and gravel.

[0020] (4) By sliding the moving block on the slide, the support position can be flexibly adjusted to meet the support requirements of pipes of different sizes; the support roller frame is provided with a plurality of rollers arranged along the axial direction, so that the support roller frame can support the pipe from multiple angles.

[0021] (5) The broken sand and gravel under the rear end of the pipeline are removed by multiple scrapers on the conveyor chain, leaving a shallow groove to facilitate the docking of the front and rear pipelines. There is no need for manual trenching and auxiliary alignment, which improves efficiency, reduces labor costs, and reduces the occurrence of safety accidents.

[0022] (6) The crushed sand and gravel can be pushed forward and outward by the inclined blade, and then pushed outward by the straight blade, gradually digging out the crushed sand and gravel to a certain depth, which can accommodate the various structures above and below the slide plate, that is, can accommodate the expansion, so as to realize the digging of the crushed sand and gravel.

[0023] (7) The driver drives the rotating roller to rotate, the chain plate rotates, and the scraper moves to scrape the broken sand and stone materials. The middle support plate serves as a support for the chain plate, and the middle support plate is connected to the connecting frame.

[0024] (8) The guide rod and the lead screw provide stable support and guidance for the slide, ensuring its stability and reliability during the sliding process. The combination of the lead screw and the slide block has the characteristics of efficient transmission, which can effectively transmit the power of the drive motor to the slide, achieving fast and smooth sliding. The components of the sliding support are relatively simple and compact, easy to install and maintain, and also save space. The slide is U-shaped, which is convenient for the placement of the pipeline and its movement into the shallow groove.

[0025] (9) The lifting mechanism also includes a vertical rod and a lifter supporting the door seat. The vertical rod plays a guiding and limiting role to ensure its stability and safety during the lifting process. The lifter is used to raise or lower the lifting frame to place the pipe in the groove. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of pipeline docking;

[0027] Figure 2 It is a side schematic diagram of the present invention;

[0028] Figure 3 for Figure 1 Schematic diagram of the cross-section at AA in the middle;

[0029] Figure 4 for Figure 3 Schematic diagram of the middle B direction;

[0030] Figure 5 for Figure 3 Schematic diagram of the middle C direction;

[0031] Figure 6 This is a three-dimensional top view of the scraper.

[0032] Description of reference numerals:

[0033] 1-Support door seat;

[0034] 2-lifting mechanism, 21-lifting frame, 22-vertical rod, 23-lifter;

[0035] 3-front support mechanism, 31-sliding seat, 32-sliding rod, 33-support block, 34-push cylinder;

[0036] 4-rear support mechanism, 41-slideway, 42-moving block, 43-support roller frame, 44-roller;

[0037] 5- material stripping mechanism, 51- connecting frame, 52- material stripping knife, 521- inclined plate knife, 522- straight plate knife, 53- conveying plate chain, 54- rotating roller, 55- middle support plate, 56- chain plate, 57- driver;

[0038] 6-sliding support, 61-slide plate, 62-guide rod, 63-screw rod, 64-sliding block, 65-driving motor;

[0039] 71-laser transmitter, 72-laser receiver, 73-stopper;

[0040] 101-pipe, 102-flare. DETAILED DESCRIPTION

[0041] In order to enable those skilled in the art to better understand the technical solutions in the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0042] Example

[0043] The following is combined with Figure 1-Figure 6 The present invention further describes a road rainwater and sewage pipe laying device, such as Figure 2 , Figure 3 and Figure 5 As shown, it includes a supporting gate seat 1 located on the groove, a lifting mechanism 2 is arranged under the supporting gate seat 1, the lifting mechanism 2 includes lifting frames 21 arranged on the left and right sides, a front supporting mechanism 3 is arranged on the front side of the lifting frames 21, a sliding support 6 is arranged between the two lifting frames 21, the sliding support 6 includes a slide plate 61, a rear supporting mechanism 4 is arranged above the slide plate 61, and a scraping mechanism 5 is arranged below the slide plate 61 opposite to the rear supporting mechanism 4; a laser emitter 71 and a laser receiver 72 are respectively arranged at the left and right ends of the rear side of the slide plate 61; the vertical distance between the laser emitter 71 and the laser receiver 72 relative to the scraping mechanism 5 is equal to twice the length of the flared opening 102 of the pipe 101.

[0044] Since it is not necessary to place the pipe 101 in the groove, the pipe 101 can be transported to the top of the support gate seat 1 by other engineering machinery, and the transportation process is stable. Since it is not a butt-jointed pipe laying, no human assistance is required, thus avoiding injury to people. The pipe gradually falls onto the lifting frame 21, so that the laser emitter 71 and the laser receiver 72 are blocked, and the slide plate 61 is moved backward until the laser receiver 72 receives the signal of the laser emitter 71, which means that the distance between the rear support mechanism 4 and the scraping mechanism 5 relative to the rear end of the pipe 101 is two flared openings 102 lengths.

[0045] The pipe 101 located on the front support mechanism 3 and the rear support mechanism 4 is dropped into the groove by the lifting frame 21; it should be noted that the pipe 101 is docked in the direction of the water flow, that is, the large opening of the rear pipe 101 is aligned with the small opening of the front pipe 101. After the pipe 101 enters the groove, the movable support gate seat 1 is adjusted when the pipe 101 falls, so that the expanded opening 102 of the rear pipe 101 is aligned and close to the rear end of the front pipe 101;

[0046] After the slide plate 61 moves backward, the distance between the rear support mechanism 4 and the scraping mechanism 5 relative to the rear end of the pipe 101 is two flared openings 102 lengths. The rear support mechanism 4 supports the pipe 101, while the scraping mechanism 5 scrapes out the broken sand and gravel. The slide plate 61 continues to move until the rear support mechanism 4 is separated from the pipe 101, and a shallow groove of two flared openings 102 lengths is dug.

[0047] The slide plate 61 is placed outside the rear end of the pipe 101, the front support mechanism 3 and the rear support mechanism 4 are loosened, and the slide plate 61 is lifted upward by the lifting mechanism 2. When the slide plate 61 reaches the middle of the pipe 101, the slide plate 61 is driven to move forward, and the rear pipe 101 is pushed forward, and its flared opening 102 reaches the rear end of the front pipe 101. At this time, a shallow trench with two flared openings 102 is dug, and the rear half is left due to the movement of the pipe 101, and the front half is still under the pipe 101, which is convenient for the next docking of the pipe 101. When laying the pipe 101, there is no need for a crane to lift the pipe 101 into the trench, and there is no need for manual trenching and auxiliary alignment, which reduces the occurrence of safety accidents, improves the laying efficiency of the pipe 101, and facilitates on-site laying operations and management, with a high degree of automation.

[0048] like Figure 5 As shown, a limiter 73 is also provided in the middle of the slide plate 61. When the pipe 101 is hoisted onto the lifting frame 21 and contacts the limiter 73 on the slide plate 61, the front support mechanism 3 and the rear support mechanism 4 clamp and support the pipe, thereby lowering the height of the pipe 101 to facilitate subsequent placement on crushed sand and gravel.

[0049] like Figure 3 and Figure 4 As shown, the front support mechanism 3 includes a horizontally arranged slide 31 and a slide rod 32 , the slide rod 32 is slidably connected to the slide 31 , a support block 33 is provided at one end of the slide rod 32 , and a push cylinder 34 is connected to the other end.

[0050] like Figure 3 and Figure 5As shown, the rear support mechanism 4 includes a slide 41 and two moving blocks 42 opposite to the slide 41, the moving blocks 42 are provided with an arc-shaped support roller frame 43, and the support roller frame 43 is provided with a plurality of rollers 44 arranged along the axial direction, so that the support roller frame 43 supports the pipeline 101 from multiple angles; by sliding the moving block 42 on the slide 41, the support position can be flexibly adjusted to meet the support requirements of pipelines 101 of different sizes.

[0051] like Figure 3 and Figure 5 As shown, the scraping mechanism 5 includes a connecting frame 51 and a conveying plate chain 53. The connecting frame 51 is arranged on the front side of the slide plate 61, and the upper end of the connecting frame 51 is connected to the slide plate 61, and the lower end is connected to the conveying plate chain 53. The conveying plate chain 53 is located directly below the slide plate 61, and a plurality of scraping knives 52 are arranged circumferentially on the conveying plate chain 53.

[0052] The multiple scraping knives 52 on the conveyor plate chain 53 are used to scrape away the broken sand and gravel under the rear end of the pipeline 101, leaving a shallow groove to facilitate the docking of the front and rear pipelines 101. There is no need for manual trenching, and auxiliary alignment reduces labor costs.

[0053] like Figure 6 As shown, the stripping knife 52 includes an inclined plate knife 521 and a straight plate knife 522. The inclined plate knife 521 is obliquely arranged on the conveying plate chain 53, and the straight plate knife 522 is connected to the rear end of the inclined plate knife 521 and extends to the rear side of the conveying plate chain 53; the inclined plate knife 521 is an inverted right triangle, and the hypotenuse faces the rear side.

[0054] The crushed sand and gravel can be pushed forward and outward by the inclined blade 521, and then pushed outward by the straight blade 522, and gradually the crushed sand and gravel are pulled out to a certain depth, which can accommodate the various structures above and below the slide plate 61, that is, can accommodate the expansion 102, so as to realize the pulling of the crushed sand and gravel. The middle part of the inclined blade 521 can be fixed to a chain plate 56 on the conveying plate chain 53, and does not affect the transmission on the conveying plate chain 53.

[0055] like Figure 5 As shown, the conveyor plate chain 53 includes a chain plate 56 that goes around a circle, rotating rollers 54 located at both ends of the chain plate 56, and an intermediate support plate 55 between the two rotating rollers 54 for supporting the chain plate 56. The rotating rollers 54 are driven to rotate by a driver 57. The driver 57 drives the rotating rollers 54 to rotate, and the chain plate 56 rotates, driving the scraper 52 to move, scraping the crushed sand and stone materials. The intermediate support plate 55 serves as a support for the chain plate 56, and the intermediate support plate 55 is connected to the connecting frame 51.

[0056] like Figure 3As shown, the sliding support 6 further includes a guide rod 62 and a screw rod 63 which are respectively arranged on two lifting frames 21. One end of the screw rod 63 is connected to a driving motor 65. The slide plate 61 is provided with a slider 64 which is slidably connected to the guide rod 62 and the screw rod 63. The slide plate 61 is a U-shaped plate.

[0057] The guide rod 62 and the screw rod 63 together provide stable support and guidance for the slide plate 61, ensuring its stability and reliability during the sliding process. Moreover, the cooperation between the screw rod 63 and the slider has the characteristics of efficient transmission, which can effectively transmit the power of the drive motor 65 to the slide plate 61, realizing fast and smooth sliding. The components of the sliding support 6 are relatively simple and compact, easy to install and maintain, and also save space. Moreover, the slide plate 61 is U-shaped, which is convenient for the placement of the pipe 101 and its movement into the shallow groove.

[0058] like Figure 1 As shown, the lifting mechanism 2 also includes a vertical rod 22 and a lifter 23 supporting the door seat 1. The lifting frame 21 is slidably connected to the vertical rod 22. The output end of the lifter 23 is connected to the lifting frame 21. The vertical rod 22 plays a guiding and limiting role to ensure its stability and safety during the lifting process. The lifting frame 21 is raised or lowered by the lifter 23.

[0059] In the description of the present invention, the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "vertical", "horizontal" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the purpose of describing the present invention rather than requiring the present invention to be constructed or operated in a specific position, and therefore should not be construed as limiting the present invention. The terms "connected" and "connected" in the present invention should be understood in a broad sense, for example, it can be a connection or a detachable connection; it can be a direct connection or an indirect connection through an intermediate component. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific circumstances.

[0060] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes for application in other fields. However, any simple modification or equivalent change made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A road rainwater and sewage pipe laying device, characterized in that: It comprises a support gate seat (1) located on the groove, a lifting mechanism (2) is provided under the support gate seat (1), the lifting mechanism (2) comprises lifting frames (21) arranged on the left and right sides, a front supporting mechanism (3) is provided on the front side of the lifting frames (21), a sliding support (6) is provided between the two lifting frames (21), the sliding support (6) comprises a slide plate (61), a rear supporting mechanism (4) is provided above the slide plate (61), and a material scraping mechanism (5) is provided below the slide plate (61) and directly opposite to the rear supporting mechanism (4); A laser transmitter (71) and a laser receiver (72) are respectively provided at the left and right ends of the rear side of the slide plate (61); the distance between the laser transmitter (71) and the laser receiver (72) relative to the scraping mechanism (5) is equal to twice the length of the flared opening (102) of the pipe (101); The scraping mechanism (5) comprises a connecting frame (51) and a conveying plate chain (53); the connecting frame (51) is arranged on the front side of the slide plate (61); the upper end of the connecting frame (51) is connected to the slide plate (61); the lower end of the connecting frame (51) is connected to the conveying plate chain (53); the conveying plate chain (53) is located directly below the slide plate (61); and a plurality of scraping knives (52) are arranged circumferentially on the conveying plate chain (53).

2. A road rainwater and sewage pipe laying device according to claim 1, characterized in that: A stopper (73) is also provided in the middle of the slide plate (61).

3. A road rainwater and sewage pipe laying device according to claim 1, characterized in that: The front support mechanism (3) comprises a horizontally arranged slide seat (31) and a slide rod (32), wherein the slide rod (32) is slidably connected to the slide seat (31), and a support block (33) is provided at one end of the slide rod (32), and a push cylinder (34) is connected to the other end.

4. A road rainwater and sewage pipe laying device according to claim 1, characterized in that: The rear support mechanism (4) comprises a slideway (41) and two moving blocks (42) opposite to the slideway (41); an arc-shaped support roller frame (43) is provided on the moving block (42); and a plurality of rollers (44) arranged along the axial direction are provided on the support roller frame (43).

5. A road rainwater and sewage pipe laying device according to claim 1, characterized in that: The stripping knife (52) comprises an inclined plate knife (521) and a straight plate knife (522), wherein the inclined plate knife (521) is obliquely arranged on the conveying plate chain (53), and the straight plate knife (522) is connected to the rear end of the inclined plate knife (521) and extends toward the rear side of the conveying plate chain (53); The inclined plate knife (521) is in the shape of an inverted right triangle, with the hypotenuse facing the rear side.

6. A road rainwater and sewage pipe laying device according to claim 5, characterized in that: The conveyor plate chain (53) comprises a chain plate (56) which surrounds the chain plate (56), rotating rollers (54) located at both ends of the chain plate (56), and an intermediate support plate (55) between the two rotating rollers (54) for supporting the chain plate (56), wherein the rotating rollers (54) are driven to rotate by a driver (57).

7. A road rainwater and sewage pipe laying device according to claim 1, characterized in that: The sliding support (6) further comprises a guide rod (62) and a screw rod (63) which are arranged on two lifting frames (21) in a relative manner. One end of the screw rod (63) is connected to a driving motor (65). The slide plate (61) is provided with a sliding block (64) which is slidably connected to the guide rod (62) and the screw rod (63) respectively.

8. A road rainwater and sewage pipe laying device according to claim 7, characterized in that: The slide plate (61) is a U-shaped plate.

9. A road rainwater and sewage pipe laying device according to claim 1, characterized in that: The lifting mechanism (2) further comprises a vertical rod (22) and a lifter (23) supporting the door seat (1); the lifting frame (21) is slidably connected to the vertical rod (22); and the output end of the lifter (23) is connected to the lifting frame (21).

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