A pipeline laying device for urban sewage pipeline reconstruction construction

Abstract

The application relates to the technical field of pipeline laying, and discloses a pipeline laying device for urban sewage pipeline reconstruction construction, which comprises a mounting frame and a pipeline to be laid. The front and rear sides of the top end of the mounting frame are fixedly connected with adjusting mechanisms. Main fixing mechanisms are installed outside the adjusting mechanisms. The main fixing mechanisms are used for fixing the pipeline to be laid. The main fixing mechanisms comprise double-shaft motors and two fixing discs. The double-shaft motors are installed at the top end of the mounting frame. The two output ends of the double-shaft motors are fixedly connected with transmission rods. The other ends of the transmission rods are fixedly connected with spline shafts. Spline sleeves are installed outside the spline shafts. The main fixing mechanisms can be used for fixing multiple sewage pipelines. The main fixing mechanisms can be used for clamping and fixing sewage pipelines with different sizes. The clamping and fixing effect is good. The sewage pipelines can be prevented from falling during transportation and installation, so that the laying efficiency of the sewage pipelines is improved.

Description

Technical Field

[0001] This invention relates to the field of pipeline laying technology, specifically to a pipeline laying device for urban sewage pipeline renovation construction. Background Technology

[0002] In modern urban construction, rainwater pipes and sewage pipes are crucial components. Rainwater pipes collect natural rainwater and transport it to natural water bodies. Sewage pipes collect wastewater that has been used by people. Sewage pipes typically transport wastewater to a sewage treatment plant for treatment to meet discharge standards before being discharged into water bodies or used for recycling. Sewage pipes require laying during use; however, most existing urban sewage pipe laying devices fix the sewage pipes to the device using clamps, move the device to the laying location, and then lay the sewage pipes on the ground. These devices can only fix single sewage pipes and are not suitable for clamping and fixing sewage pipes of different sizes. Furthermore, the clamping effect is not ideal, easily leading to sewage pipes falling during transportation and installation, posing a safety hazard. Therefore, improvements are needed. To address these problems, those skilled in the art propose a pipe laying device for urban sewage pipe renovation construction. Summary of the Invention

[0003] To address the shortcomings of existing technologies, this invention provides a pipe laying device for urban sewage pipeline renovation construction, which solves the problem that existing technologies can only fix one or multiple sewage pipes with poor fixing effect, thus affecting laying efficiency.

[0004] To achieve the above objectives, the present invention is implemented through the following technical solution: a pipe laying device for urban sewage pipe renovation construction, comprising an installation frame and a pipe to be laid, wherein an adjustment mechanism is fixedly connected to both the front and rear sides of the top of the installation frame, and a main fixing mechanism is installed outside the adjustment mechanism, the main fixing mechanism being used to fix the pipe to be laid;

[0005] The main fixing mechanism includes a dual-axis motor and two fixing discs. The dual-axis motor is installed at the top center of the mounting frame. Both output ends of the dual-axis motor are fixedly connected to transmission rods. The other end of each transmission rod is fixedly connected to a splined shaft. A splined sleeve is installed on the outside of the splined shaft. The outside of the splined sleeve is connected to the fixing discs through a first transmission assembly. The two fixing discs are respectively located on the left and right sides of the top of the mounting frame. Multiple clamping discs are fixedly connected to the outside of each fixing disc through multiple traveling wheels. A fixing ring is fixedly connected inside each clamping disc. Four symmetrically arranged movable rods are slidably connected to the inner surface of the fixing ring. An arc-shaped clamping plate is fixedly connected to one end of each movable rod. A drive rack plate is fixedly connected to the outside of each movable rod. Multiple second gears are fixedly connected inside each clamping disc through a rotating shaft. A double-sided toothed ring is rotatably connected to the outer circumference of the inside of each clamping disc. A first gear is rotatably connected to one side of the outside of each clamping disc through a rotating shaft. A rotating toothed ring is rotatably connected to the outer surface of each fixing disc.

[0006] Preferably, the first transmission assembly includes a driven gear and a driving gear. The driven gear is movably connected to the outside of the fixed disk via a bearing. A limit plate is fixedly connected to the outside of the driven gear. The driving gear is fixedly connected to the outside of the spline sleeve. The outer side of the driven gear is connected to the outer side of the driving gear via a gear belt.

[0007] Preferably, the adjustment mechanism includes two concave mounting plates, which are respectively fixedly connected to the front and rear sides of the top of the mounting frame. A servo motor is installed on the left end of the front concave mounting plate, and a drive screw is fixedly connected to the output end of the servo motor. Two threaded sleeves are threadedly connected to the external threads of the drive screws, and a connecting plate is fixedly connected to the external threads of the threaded sleeves. The outer surface of the connecting plate is slidably connected to the outer surface of the fixed plate. A connecting strip is also fixedly connected to the external threads of the threaded sleeves, and two connecting strips are respectively fixedly connected to the external spline sleeves at corresponding positions. The two drive screws are connected to each other through a second transmission assembly.

[0008] Preferably, the threads on the left and right sides of the outer wall of the drive screw are symmetrically arranged, and the lower surface of the threaded sleeve is slidably connected to the upper surface of the concave mounting plate.

[0009] Preferably, the second transmission assembly includes two transmission shafts, which are located on the left and right sides of the top of the mounting frame, respectively. The transmission shafts are fixedly connected to the mounting frame via a support plate. Both ends of the transmission shafts are fixedly connected with drive bevel gears. Both outer sides of the two drive screws are fixedly connected with driven bevel gears. The outer sides of the two drive bevel gears are respectively meshed with the outer sides of the corresponding driven bevel gears.

[0010] Preferably, the outer sides of the plurality of first gears are meshed with the outer side of the rotating gear ring, and the outer sides of the plurality of first gears are meshed with one side of the double-sided gear ring, the outer sides of the plurality of second gears are meshed with the other side of the double-sided gear ring, and one side of the plurality of second gears is meshed with the outer side of the drive rack plate at the corresponding position.

[0011] Preferably, the movable rod is slidably connected to the inner wall of the clamping disc, and an anti-slip pad is provided on the inner side of the rotating gear ring.

[0012] Preferably, the spline shaft and the spline sleeve are clearance fit, and the other end of the spline sleeve is fixedly connected to the inner wall of the mounting bracket.

[0013] Preferably, the outer side of the driven gear meshes with the outer side of the rotating gear ring, and the radius of the limiting plate is larger than the radius of the driven gear.

[0014] Preferably, a controller is installed on one side of the top of the mounting bracket, and the controller is electrically connected to the dual-axis motor and the servo motor respectively.

[0015] Working Principle: First, multiple sewage pipes are passed through the internal through holes of multiple clamping discs, with their other ends passing through the clamping discs on the opposite side. Then, the dual-shaft motor is activated, causing the transmission rod to rotate, which in turn rotates the splined shaft, driving the splined sleeve to rotate. This causes the externally fixed drive gear to rotate synchronously, and under the action of the gear belt, it drives the driven gear to rotate. This, in turn, causes the rotating gear ring mounted on the outside of the fixed disc to rotate along the outer surface of the fixed disc. This, in turn, causes multiple meshing first gears to rotate, causing the double-sided gear ring to rotate on the inner wall of the clamping disc. This, in turn, causes the meshing second gear to rotate, further driving the meshing drive rack plate to rotate. This allows the movable rod to move along the sliding groove on the outer surface of the fixed ring towards the center of the clamping disc. At this point, multiple arc-shaped clamping plates clamp and fix the pipes. This allows for the simultaneous fixing of multiple sewage pipes, and can clamp and fix sewage pipes of different sizes with ideal clamping effect, preventing sewage pipes from falling off during transportation and installation. Furthermore, the overall structural design is reasonable and easy to use. If the length of the pipe to be laid is different and the relative distance between the two fixed plates needs to be adjusted, the servo motor is started to make the drive screw rotate, which in turn drives the driven bevel gear connected to it to rotate, thereby driving the drive bevel gear to rotate, which in turn drives the transmission shaft to rotate, thereby driving the drive bevel gear at the other end of the transmission shaft to rotate, and so on, driving the driven bevel gear of the rear drive screw to rotate. In this way, the two drive screws rotate synchronously. At this time, the rotation of the drive screw causes the two threaded sleeves to move closer or further apart along the outer wall of the drive screw, thereby driving the connecting plate and connecting strip to move synchronously. The movement of the connecting plate causes the two fixed plates to move relative to each other, thereby achieving flexible clamping of sewage pipes of different lengths, improving the flexibility of the device. At the same time, the movement of the two connecting strips causes them to move along the outer wall of the spline shaft. Since the spline shaft and the connecting strip are clearance fit, when the dual-axis motor rotates again, it still drives the spline shaft and the connecting strip to rotate, without affecting the normal operation of the main fixing mechanism.

[0016] This invention provides a pipe laying device for urban sewage pipeline renovation construction. It has the following beneficial effects:

[0017] 1. This invention, through the coordinated use of additional structures such as a fixed plate, a clamping plate, a movable rod, an arc-shaped clamping plate, a first gear, a double-sided gear ring, and a second gear, can fix multiple sewage pipes and clamp sewage pipes of different sizes. The clamping and fixing effect is good, preventing the sewage pipes from falling off during transportation and installation, thereby improving the laying efficiency of sewage pipes.

[0018] 2. This invention utilizes the interplay of various structural elements, including a concave mounting plate, a drive screw, a threaded sleeve, a connecting plate, a connecting strip, and a servo motor, to enable flexible adjustment of the device for sewage pipes of different lengths. The overall structure is rationally designed, cost-effective, easy to operate, and convenient for users. Attached Figure Description

[0019] Figure 1 This is a perspective view of the present invention;

[0020] Figure 2 This is a schematic diagram of the drive screw structure of the present invention;

[0021] Figure 3 for Figure 1 Enlarged view of point A in the middle;

[0022] Figure 4 for Figure 1 Enlarged view of point B in the middle;

[0023] Figure 5 for Figure 2 Enlarged view of point C in the middle;

[0024] Figure 6 for Figure 2 Enlarged view of point D in the middle;

[0025] Figure 7 This is a schematic diagram of the clamping disk structure of the present invention;

[0026] Figure 8 This is a schematic diagram of the double-sided toothed ring structure of the present invention;

[0027] Figure 9 for Figure 8 Enlarged view of point E in the middle.

[0028] The components include: 1. Mounting frame; 2. Main fixing mechanism; 201. Fixing plate; 202. Clamping plate; 203. Movable rod; 204. Arc-shaped clamping plate; 205. First gear; 206. Double-sided gear ring; 207. Second gear; 208. Rotating gear ring; 209. Fixing ring; 210. Splined shaft; 211. Transmission rod; 212. Dual-shaft motor; 213. Splined sleeve; 214. Drive rack plate; 3. Pipe to be laid; 4. Traveling wheel; 5. 501. Adjustment mechanism; 502. Concave mounting plate; 503. Drive screw; 504. Threaded sleeve; 505. Connecting plate; 506. Connecting strip; 507. Servo motor; 6. First transmission assembly; 601. Driven gear; 602. Limiting plate; 603. Drive gear; 604. Gear belt; 7. Second transmission assembly; 701. Support plate; 702. Transmission shaft; 703. Drive bevel gear; 704. Driven bevel gear; 8. Controller. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0030] Example:

[0031] Please see the appendix Figure 1 - Appendix Figure 9 This invention provides a pipe laying device for urban sewage pipe renovation construction, including a mounting frame 1 and a pipe 3 to be laid. Adjustment mechanisms 5 are fixedly connected to the front and rear sides of the top of the mounting frame 1. These adjustment mechanisms 5 allow the device to flexibly adjust to sewage pipes of different lengths. The overall structure is reasonably designed, low in cost, simple to operate, and easy to use. A main fixing mechanism 2 is installed outside the adjustment mechanism 5. This main fixing mechanism 2 can fix multiple sewage pipes and clamp sewage pipes of different sizes, providing a good clamping effect and preventing the sewage pipes from falling during transportation and installation, thereby improving the efficiency of sewage pipe laying. The main fixing mechanism 2 is used to fix the pipe 3 to be laid.

[0032] The main fixing mechanism 2 includes a dual-axis motor 212 and two fixing disks 201. The dual-axis motor 212 is a mature existing technology product, powered by an external power supply, and is well known to those skilled in the art, so it will not be described in detail here. The dual-axis motor 212 is installed at the top center of the mounting bracket 1. Both output ends of the dual-axis motor 212 are fixedly connected to transmission rods 211. The other end of the transmission rods 211 is fixedly connected to a splined shaft 210. A splined sleeve 213 is installed on the outside of the splined shaft 210. The outside of the splined sleeve 213 is connected to the fixing disks 201 through a first transmission assembly 6, so that the rotation of the splined sleeve 213 can drive the main fixing mechanism 2 to rotate through the first transmission assembly 6. The two fixing disks 201 are respectively provided with The mounting bracket 1 is positioned on the top left and right sides. Multiple clamping discs 202 are fixedly connected to the outside of the fixed disc 201 via multiple traveling wheels 4. A fixed ring 209 is fixedly connected inside the clamping disc 202. Four symmetrically arranged movable rods 203 are slidably connected to the inner surface of the fixed ring 209. An arc-shaped clamping plate 204 is fixedly connected to one end of each movable rod 203. The arc-shaped clamping plates 204 are centrally symmetrically arranged around the center of the fixed disc 201. A drive rack plate 214 is fixedly connected to the outside of the movable rods 203. Multiple second gears 207 are fixedly connected inside the clamping disc 202 via a rotating shaft. A double-sided gear ring 206 is rotatably connected to the outer circumference of the inner side of the clamping disc 202. The outer side of the clamping disc 202 is connected via a rotating shaft. A shaft is rotatably connected to a first gear 205, and a rotating gear ring 208 is rotatably connected to the outer surface of a fixed disk 201. Multiple sewage pipes are passed through the internal through holes of multiple clamping disks 202, with their other ends passing through the clamping disks 202 on the other side. By starting the dual-shaft motor 212, the transmission rod 211 rotates, which in turn rotates the spline shaft 210, thereby driving 213 to rotate. This causes the externally fixed drive gear 603 to rotate synchronously, and under the action of the gear belt 604, it drives the driven gear 601 to rotate. This, in turn, causes the rotating gear ring 208 mounted on the outside of the fixed disk 201 to rotate along the outer surface of the fixed disk 201, thus driving multiple meshing first gears... When wheel 205 rotates, the double-sided toothed ring 206 rotates on the inner wall of the clamping disc 202. This causes the meshing second gear 207 to rotate, which in turn causes the meshing drive rack plate 214 to rotate. This allows the movable rod 203 to move along the groove on the outer surface of the fixed ring 209 toward the center of the clamping disc 202. At this time, multiple arc-shaped clamping plates 204 are used to clamp and fix the pipe. This allows multiple sewage pipes to be fixed at the same time, and sewage pipes of different sizes can be clamped and fixed. The clamping and fixing effect is ideal, preventing the sewage pipes from falling off during transportation and installation. The overall structure is reasonably designed and easy to use.

[0033] The first transmission assembly 6 includes a driven gear 601 and a drive gear 603. The driven gear 601 is movably connected to the outside of the fixed disk 201 via a bearing. The drive gear 603 is fixedly connected to the outside of the spline sleeve 213. A limit plate 602 is fixedly connected to the outside of the driven gear 601. The outer side of the driven gear 601 is connected to the outer side of the drive gear 603 via a gear belt 604. The rotation of the spline sleeve 213 causes the externally fixed drive gear 603 to rotate synchronously. Under the action of the gear belt 604, the driven gear 601 is driven to rotate, thereby causing the rotating gear ring 208 installed on the outside of the fixed disk 201 to rotate along the outer surface of the fixed disk 201.

[0034] The adjustment mechanism 5 includes two concave mounting plates 501, which are fixedly connected to the front and rear sides of the top of the mounting frame 1, respectively. A servo motor 506 is mounted on the left end of the front concave mounting plate 501. A drive screw 502 is fixedly connected to the output end of the servo motor 506. Two threaded sleeves 503 are threadedly connected to the outside of the drive screw 502. A connecting plate 504 is fixedly connected to the outside of the threaded sleeve 503. The outer surface of the connecting plate 504 is slidably connected to the outer surface of the fixed plate 201. A connecting strip 505 is also fixedly connected to the outside of the threaded sleeve 503. The two connecting strips 505 are fixedly connected to the outside of the corresponding spline sleeve 213. The two drive screws 502 are connected to each other through the second transmission assembly 7. If the length of the pipe 3 to be laid is different and the relative distance between the two fixed plates 201 needs to be adjusted, the servo motor 502 is activated. The servo motor 506 causes the drive screw 502 to rotate, which in turn drives the driven bevel gear 704, which in turn drives the drive bevel gear 703 to rotate, and then drives the transmission shaft 702 to rotate, which in turn drives the drive bevel gear 703 at the other end of the transmission shaft 702 to rotate, thus driving the driven bevel gear 704 of the rear drive screw 502 to rotate. This achieves synchronous rotation of the two drive screws 502. At this time, the rotation of the drive screws 502 causes the two threaded sleeves 503 to move closer or further apart along the outer wall of the drive screws 502, thereby causing the connecting plate 504 and the connecting strip 505 to move synchronously. The movement of the connecting plate 504 causes the two fixed discs 201 to move relative to each other, thereby achieving flexible clamping of sewage pipes of different lengths and improving the flexibility of the device.

[0035] The threads on the left and right sides of the outer wall of the drive screw 502 are symmetrically arranged. The lower surface of the threaded sleeve 503 is slidably connected to the upper surface of the concave mounting plate 501, so that the rotation of the drive screw 502 can drive the two threaded sleeves 503 to move closer or further apart along the outer wall of the drive screw 502. At the same time, the lower surface of the threaded sleeve 503 is in contact with the upper surface of the concave mounting plate 501 to prevent the threaded sleeve 503 from rotating and to ensure the stability of the threaded sleeve 503 when it moves.

[0036] The second transmission assembly 7 includes two transmission shafts 702, which are located on the left and right sides of the top of the mounting frame 1, respectively. The transmission shafts 702 are fixedly connected to the mounting frame 1 through the support plate 701. Both ends of the transmission shafts 702 are fixedly connected to drive bevel gears 703. Both outer sides of the two drive screws 502 are fixedly connected to driven bevel gears 704. The outer sides of the two drive bevel gears 703 are respectively meshed with the outer sides of the corresponding driven bevel gears 704. When the servo motor 506 is started, the drive screws 502 rotate, which in turn drives the driven bevel gears 704 meshed with them to rotate, thereby driving the drive bevel gears 703 to rotate, and then driving the transmission shafts 702 to rotate, thereby driving the drive bevel gears 703 at the other end of the transmission shafts 702 to rotate, thus driving the driven bevel gears 704 at the rear drive screws 502 to rotate, thus achieving synchronous rotation of the two drive screws 502.

[0037] The outer sides of multiple first gears 205 are meshed with the outer side of the rotating gear ring 208, and the outer sides of multiple first gears 205 are meshed with one side of the double-sided gear ring 206. The outer sides of multiple second gears 207 are meshed with the other side of the double-sided gear ring 206, and one side of multiple second gears 207 is meshed with the outer side of the corresponding drive rack plate 214. The rotating gear ring 208 rotates, causing the multiple meshing first gears 205 to rotate, causing the double-sided gear ring 206 to rotate on the inner wall of the clamping disk 202. At this time, the meshing second gears 207 rotate, and further drive the meshing drive rack plate 214 to rotate, so that the movable rod 203 can move towards the center of the clamping disk 202 along the groove on the outer surface of the fixed ring 209. At this time, the pipe is clamped and fixed by multiple arc-shaped clamping plates 204.

[0038] The movable rod 203 is slidably connected to the inner wall of the clamping plate 202. The inner side of the rotating toothed ring 208 is provided with an anti-slip pad. The inner wall of the clamping plate 202 is provided with a groove, which allows the movable rod 203 to move within the groove. The anti-slip pad design increases the friction with the pipe 3 to be laid, resulting in a better clamping effect.

[0039] The spline shaft 210 and the spline sleeve 213 are clearance fit. The other end of the spline sleeve 213 is fixedly connected to the inner wall of the mounting bracket 1. When the two connecting bars 505 move, 213 moves along the outer wall of the spline shaft 210. Since the spline shaft 210 and 213 are clearance fit, when the dual-axis motor 212 rotates again, it will still drive the spline shaft 210 and 213 to rotate, without affecting the normal operation of the main fixing mechanism 2.

[0040] The outer side of the driven gear 601 meshes with the outer side of the rotating gear ring 208. The radius of the limiting plate 602 is larger than the radius of the driven gear 601. The design of the clamping plate 202 prevents the gear belt 604 from disengaging from the driven gear 601, ensuring the stability of the connection.

[0041] A controller 8 is installed on one side of the top of the mounting bracket 1. The controller 8 is electrically connected to the dual-axis motor 212 and the servo motor 506 respectively, so that the staff can flexibly control the forward and reverse rotation and start and stop status of the dual-axis motor 212 and the servo motor 506 through the controller 8, which is convenient for people to use.

[0042] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A pipe laying device for urban sewer pipeline renovation construction, comprising a mounting frame (1) and a pipe (3) to be laid, characterized in that, The top end of the mounting frame (1) is fixedly connected with adjusting mechanisms (5) on both sides, the outer part of the adjusting mechanism (5) is provided with a main fixing mechanism (2), and the main fixing mechanism (2) is used for fixing the pipeline (3) to be laid; The main fixing mechanism (2) comprises a double-shaft motor (212) and two fixing discs (201), the double-shaft motor (212) is installed at the top end of the mounting frame (1), both output ends of the double-shaft motor (212) are fixedly connected with transmission rods (211), the other end of the transmission rod (211) is fixedly connected with a spline shaft (210), the outer part of the spline shaft (210) is provided with a spline sleeve (213), the outer part of the spline sleeve (213) is connected with the fixing disc (201) through a first transmission assembly (6), the two fixing discs (201) are arranged on the left and right sides of the top end of the mounting frame (1), the outer part of the fixing disc (201) is fixedly connected with a plurality of clamping discs (202) through a plurality of walking wheels (4), the inner part of the clamping disc (202) is fixedly connected with a fixing ring (209), the inner surface of the fixing ring (209) is slidably connected with four symmetrically arranged movable rods (203), one end of the movable rod (203) is fixedly connected with an arc-shaped clamping plate (204), the outer part of the movable rod (203) is fixedly connected with a drive rack plate (214), the inner part of the clamping disc (202) is fixedly connected with a plurality of second gears (207) through a rotating shaft, the inner periphery of the clamping disc (202) is rotatably connected with a double-sided tooth ring (206), one side of the outer part of the clamping disc (202) is rotatably connected with a first gear (205) through a rotating shaft, and the outer surface of the fixing disc (201) is rotatably connected with a rotating tooth ring (208). The outer sides of the plurality of first gears (205) are meshedly connected with the outer side of the rotating tooth ring (208), the outer sides of the plurality of first gears (205) are meshedly connected with one side of the double-sided tooth ring (206), the outer sides of the plurality of second gears (207) are meshedly connected with the other side of the double-sided tooth ring (206), and one side of the plurality of second gears (207) is meshedly connected with the outer side of the drive rack plate (214) in the corresponding position.

2. The pipe laying device for urban sewer pipeline renovation construction according to claim 1, characterized in that, The first transmission assembly (6) comprises a driven gear (601) and a drive gear (603), the driven gear (601) is movably connected to the outer part of the fixing disc (201) through a bearing, the outer part of the driven gear (601) is fixedly connected with a limiting plate (602), the drive gear (603) is fixedly connected to the outer part of the spline sleeve (213), and the outer sides of the driven gear (601) and the drive gear (603) are connected through a gear belt (604).

3. The pipe laying device for urban sewer pipeline renovation construction according to claim 1, characterized in that, The adjusting mechanism (5) comprises two concave mounting plates (501), which are fixedly connected to the top front and back of the mounting rack (1) respectively, a servo motor (506) is installed at the left end of the front concave mounting plate (501), the output end of the servo motor (506) is fixedly connected with a drive screw (502), the outer thread of the drive screw (502) is connected with two threaded sleeves (503), the outer part of the threaded sleeve (503) is fixedly connected with a connecting plate (504), the outer surface of the connecting plate (504) is slidably connected with the outer surface of the fixed disc (201), the outer part of the threaded sleeve (503) is also fixedly connected with a connecting strip (505), the two connecting strips (505) are fixedly connected with the outer part of the spline sleeve (213) in the corresponding position respectively, and the two drive screws (502) are connected through the second transmission assembly (7).

4. The pipe laying device for urban sewer pipeline reconstruction construction according to claim 3, characterized in that, The outer walls of the drive screw (502) are symmetrically provided with threads, and the lower surface of the threaded sleeve (503) is slidably connected with the upper surface of the concave mounting plate (501).

5. The pipe laying device for urban sewer pipeline renovation construction according to claim 3, characterized in that, The second transmission assembly (7) comprises two transmission shafts (702), which are located at the left and right sides of the top of the mounting rack (1), and the transmission shafts (702) are fixedly connected with the mounting rack (1) through a support plate (701), the front and rear ends of the transmission shaft (702) are fixedly connected with drive bevel gears (703), the outer sides of the two drive screws (502) are fixedly connected with driven bevel gears (704), and the outer sides of the two drive bevel gears (703) are meshingly connected with the outer sides of the driven bevel gears (704) in the corresponding positions.

6. The pipe laying device for urban sewer pipeline renovation construction according to claim 1, characterized in that, The movable rod (203) is slidably connected to the inner wall of the clamping disc (202), and the inner side of the rotating tooth ring (208) is provided with a non-slip pad.

7. The pipe laying device for urban sewer pipeline renovation construction according to claim 1, characterized in that, The spline shaft (210) and the spline sleeve (213) are gap-fitted, and the other end of the spline sleeve (213) is fixedly connected with the inner wall of the mounting rack (1). The spline shaft (210) and the spline sleeve (213) are gap-fitted, and the other end of the spline sleeve (213) is fixedly connected with the inner wall of the mounting rack (1), when the two connecting strips (505) move, the spline sleeve (213) moves along the outer wall of the spline shaft (210), because the spline shaft (210) and the spline sleeve (213) are gap-fitted, when the double-shaft motor (212) rotates again, the spline shaft (210) and the spline sleeve (213) also rotate, which does not affect the normal operation of the main fixing mechanism (2).

8. The pipe laying device for urban sewer pipeline renovation construction according to claim 2, characterized in that, The outer side of the driven gear (601) is meshingly connected with the outer side of the rotating tooth ring (208), and the radius of the limiting plate (602) is greater than that of the driven gear (601).

9. The pipe laying device for urban sewer pipeline renovation construction according to claim 3, characterized in that, A controller (8) is installed on one side of the top of the mounting rack (1), and the controller (8) is electrically connected with the double-shaft motor (212) and the servo motor (506) respectively.

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