A pipe fixing device and method for municipal pipe network laying

Abstract

The application belongs to the technical field of municipal pipe network laying, and particularly relates to a pipe fixing device and method for municipal pipe network laying. In the initial installation stage, the fixed assembly is not closely attached to the pipe, and the fixed assembly is separated from the pipe due to thermal expansion and cold shrinkage deformation. The present application provides the following scheme, which comprises a base, a curved pipe is arranged above the base, flexible fixing assemblies are arranged on the outer sides of the two ends of the curved pipe, the flexible fixing assembly comprises two positioning rods, two symmetrical flexible plates are arranged at the bending part of the curved pipe, and the positioning rods are positioned between the two flexible plates. The pipe fixing device and method for municipal pipe network laying have the beneficial effects that the flexible plates can be closely attached to the outer sides of the curved pipe in the initial stage, and can be dynamically adapted when the pipe is subjected to thermal expansion and cold shrinkage deformation, so that stable attachment can be maintained at all times, and the pipe shape in different states can be adapted.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of municipal pipe network laying, in particular to a pipe fixing device and method for municipal pipe network laying. BACKGROUND

[0002] The pipe fixing device for municipal pipe network laying is mainly used for stabilizing the pipe system, preventing displacement or damage of the pipe caused by soil pressure, thermal expansion and contraction or external factors, limiting the abnormal movement of the pipe through a mechanical structure, and ensuring the safe operation and long-term stability of the pipe network.

[0003] During the initial installation of the curved pipe in the municipal pipe network, the pipe often has a large gap and poor contact with the fixing assembly. When the subsequent pipe is affected by the environmental temperature and deforms due to thermal expansion and contraction, the fixing assembly and the pipe surface are further separated, which eventually causes the fixing structure to loosen and the fixing effect to be lost. SUMMARY

[0004] The present application discloses a pipe fixing device and method for municipal pipe network laying, which aims to solve the technical problems of the curved pipe in the background technology not being tightly fitted with the fixing assembly during the initial installation stage, and the fixing assembly and the pipe being separated due to thermal expansion and contraction, resulting in the loss of the fixing effect.

[0005] The pipe fixing device for municipal pipe network laying comprises a base, a curved pipe arranged above the base, and flexible fixing assemblies arranged on the outer sides of the two ends of the curved pipe. The flexible fixing assembly comprises two positioning rods, two symmetrical flexible plates arranged at the bending part of the curved pipe, and the positioning rods positioned between the two flexible plates. The symmetrical flexible plates are fixedly connected with two air bags on the opposite sides, and the air bags are fixedly connected with connecting extension tubes at one end. The two air bags are connected in communication.

[0006] In a preferred scheme, two symmetrical bottom plates are fixedly connected to the two sides of the base, and an electric air charging and pumping pump is fixedly connected to the top end of each bottom plate. The output end of the electric air charging and pumping pump is fixedly connected with a gas guide pipe, and the top end of the gas guide pipe is fixedly connected to the bottom end of the air bag.

[0007] In a preferred scheme, the outer sides of the positioning rods on the inner side are provided with inner arc plates and inner connecting plates, and the opposite sides of the inner arc plates and the inner connecting plates are fixedly connected to the opposite sides of the flexible plates. The outer sides of the positioning rods are provided with outer arc plates and outer connecting plates, and the opposite sides of the outer arc plates and the outer connecting plates are fixedly connected to the opposite sides of the flexible plates. The side of the flexible plate close to the port of the curved pipe is provided with a clamping piece, and the bottom end of the clamping piece is fixedly connected to the top end of the base.

[0008] In a preferred scheme, the two ends of the base are provided with protection assemblies, the protection assemblies include two extension pieces, the inner side of the extension piece is fixedly connected with a driving motor, the power output shaft of the driving motor is connected with a rotating shaft through a shaft coupling, and the outer side of the rotating shaft is wound with a pulling rope.

[0009] In a preferred scheme, the outer side of the two pulling ropes is provided with a fixed plate, one side of the fixed plate is fixedly connected to the inner side of the extension piece, the side away from the rotating shaft of the fixed plate is provided with an extrusion spring, and the extrusion spring is located on the outer side of the pulling rope, and the end away from the fixed plate of the extrusion spring and the pulling rope is fixedly connected with a connecting piece.

[0010] In a preferred scheme, the side close to the extrusion spring of the two connecting pieces is provided with a plurality of guide rods, a plurality of round holes are formed in the fixed plate, the guide rods are movably connected in the round holes, the inner side of the connecting piece is fixedly connected with a moving rod, the outer side of the moving rod is fixedly connected with a moving seat, a hole groove is formed in the top end of the extension plate, the moving seat is movably connected in the hole groove, the side close to the driving motor of the moving seat is fixedly connected with a reset rod, one end of the reset rod is fixedly connected to the inner side of the extension piece, the top end of the moving seat is fixedly connected with a moving plate, and the top end of the two moving plates is fixedly connected with a right connecting plate and a left connecting plate respectively.

[0011] In a preferred scheme, the top end of the base is fixedly connected with a fixed seat, the inner side of the fixed seat is fixedly connected with a connecting rod, the outer side of the connecting rod is provided with a left arc plate and a right arc plate, and the top end of the left arc plate and the right arc plate is provided with a hole, the inner side of the hole is provided with a bolt, the end away from the left arc plate of the right arc plate is provided with a fixed piece, the fixed piece is located on the outer side of the bolt, and the left arc plate and the right arc plate are provided with a pressure sensor.

[0012] In a preferred scheme, the opposite side of the left arc plate and the right arc plate is provided with two compression springs, the opposite side of the compression spring is provided with an arc plate, and the side close to the pressure sensor of the arc plate is provided with a touch piece.

[0013] In a preferred scheme, the top end of the base is provided with a plurality of electric telescopic rods, a plurality of through holes are formed in the base, the electric telescopic rods are movably connected in the through holes, the telescopic end of the electric telescopic rod is fixedly connected with a pressing plate, the top end of the pressing plate is fixedly connected with a plurality of spring rods, the top end of the spring rod is fixedly connected to the inner side of the bottom end of the base plate, and the side away from the electric telescopic rod of the pressing plate is fixedly connected with a plurality of ground nails.

[0014] A pipe fixing method for municipal pipe network laying, using a pipe fixing device for municipal pipe network laying as described above, comprising the following steps:

[0015] Step one, first, the left arc plate and the right arc plate are respectively attached to the outer side of the curved pipeline, and the left arc plate and the right arc plate are locked by bolts and fixing pieces to complete the fixation of the pipeline end; at the same time, the electric telescopic rod is started, the telescopic end pushes the lower pressing plate to move downward, the ground nails on the lower pressing plate are deeply inserted into the soil, and the stable position of the whole equipment is realized;

[0016] Step two, the flexible plate of the flexible fixation assembly initially contacts the outer side of the curved pipeline, if the attachment is not tight, the electric air charging and discharging pump charges or discharges air through the air guide pipe, the expansion or contraction of the air bag is utilized to drive the flexible plate to adjust the position, until the flexible plate is tightly attached to the outer side of the curved pipeline;

[0017] Step three, the driving motor of the protection assembly is started, the power output shaft drives the rotating shaft to rotate, the pulling rope is wound up, the pulling rope pulls the connecting piece to move, and the moving rod and the moving seat are simultaneously driven to slide along the hole groove, finally, the right connecting plate and the left connecting plate at the top end of the moving plate are mutually butted and closed, the protection of the outer side of the air bag is formed, and then the soil is filled around the pipeline;

[0018] Step four, when the curved pipeline is deformed due to thermal expansion and cold contraction, the outer side pushes the flexible plate, so that the contact piece on the arc plate extrudes the pressure sensor; after the pressure sensor triggers a signal, the electric air charging and discharging pump adjusts the amount of gas in the air bag (discharges air when thermal expansion, and charges air when cold contraction), so that the flexible plate always keeps attached to the outer side of the curved pipeline, and adapts to the deformation state of the pipeline.

[0019] As can be seen from the above, the pipeline fixation device for municipal pipe network laying provided by the present application has the beneficial effects that the flexible plate can be tightly attached to the outer side of the curved pipeline in the initial stage, and can dynamically adapt to the deformation of the pipeline due to thermal expansion and cold contraction, always keeps stable attachment, and adapts to the pipeline morphology in different states. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a whole structure schematic diagram of the pipeline fixation device for municipal pipe network laying proposed by the present application;

[0021] Figure 2 It is a bottom structure schematic diagram of the pipeline fixation device for municipal pipe network laying proposed by the present application;

[0022] Figure 3 It is a left arc plate partial structure schematic diagram of the pipeline fixation device for municipal pipe network laying proposed by the present application;

[0023] Figure 4 It is a bottom seat internal structure schematic diagram of the pipeline fixation device for municipal pipe network laying proposed by the present application;

[0024] Figure 5 It is a flexible fixation assembly structure schematic diagram of the pipeline fixation device for municipal pipe network laying proposed by the present application;

[0025] Figure 6 A flexible fixing assembly part structure schematic view of a pipe fixing device for municipal pipe network laying is provided in the present application.

[0026] Figure 7 A protection assembly structure schematic view of a pipe fixing device for municipal pipe network laying is provided in the present application.

[0027] Figure 8 A protection assembly part structure schematic view of a pipe fixing device for municipal pipe network laying is provided in the present application.

[0028] In the figure: 1, base; 2, curved pipe; 3, fixing seat; 4, connecting rod; 5, left arc plate; 6, right arc plate; 7, bolt; 8, fixing piece; 9, pressure sensor; 10, compression spring; 11, touch piece; 12, arc plate; 13, flexible fixing assembly; 1301, positioning rod; 1302, outer arc plate; 1303, outer connecting plate; 1304, flexible plate; 1305, inner arc plate; 1306, inner connecting plate; 1307, clamping piece; 1308, air bag; 1309, connecting telescopic pipe; 1310, air guide pipe; 1311, electric air pump; 1312, bottom plate; 14, electric telescopic rod; 15, spring rod; 16, lower pressing plate; 17, ground nail; 18, protection assembly; 1801, extension piece; 1802, driving motor; 1803, rotating shaft; 1804, pulling rope; 1805, fixed plate; 1806, extrusion spring; 1807, guide rod; 1808, connecting piece; 1809, moving rod; 1810, moving seat; 1811, reset rod; 1812, right connecting plate; 1813, left connecting plate; 1814, moving plate. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments.

[0030] The pipe fixing device for municipal pipe network laying disclosed in the present application is mainly applied to the scene that the curved pipe is not closely attached to the fixing assembly in the initial installation stage, and the fixing assembly and the pipe are detached from the attachment and the fixing effect is invalid due to the deformation caused by thermal expansion and cold contraction.

[0031] Reference Figures 1-8The utility model provides a kind of pipe fixing device for municipal pipe network laying, including base 1, the top of base 1 is provided with curved pipe 2, and the outer side of both ends of curved pipe 2 is provided with flexible fixing component 13, flexible fixing component 13 includes two positioning rods 1301, curved pipe 2 is provided with two symmetrical flexible plates 1304 at bending portion, and positioning rod 1301 is positioned between two flexible plates 1304, and the side opposite to symmetrical flexible plate 1304 is fixedly connected with two air bags 1308, and one end of two air bags 1308 is fixedly connected with connecting telescopic pipe 1309, and two air bags 1308 are communicated.

[0032] Referring to Figure 1 、 Figure 5 and Figure 6 The side of base 1 is fixedly connected with two symmetrical bottom plates 1312, the top of bottom plate 1312 is fixedly connected with electric air pump 1311, and the output end of electric air pump 1311 is fixedly connected with air duct 1310, and the top of air duct 1310 is fixedly connected to the bottom end of air bag 1308.

[0033] In the application, the outer side of positioning rod 1301 located in the inner side is provided with inner arc plate 1305 and inner connecting plate 1306, the side opposite to inner arc plate 1305 and inner connecting plate 1306 is fixedly connected to the opposite side of flexible plate 1304, and the outer side of positioning rod 1301 is provided with outer arc plate 1302 and outer connecting plate 1303, the side opposite to outer arc plate 1302 and outer connecting plate 1303 is fixedly connected to the opposite side of flexible plate 1304, the side of flexible plate 1304 close to the port of curved pipe 2 is provided with clamping piece 1307, and the bottom end of clamping piece 1307 is fixedly connected to the top of base 1.

[0034] Specifically, in the initial arrangement stage of the assembly, the two symmetrical flexible plates 1304 will initially approach the outer side of the bending part of the curved pipeline 2, at this time, the inner arc plate 1305 and the inner tangent plate 1306 outside the outer positioning rod 1301 will approach the pipeline synchronously with the flexible plate 1304, but at this time, there may be a gap between the flexible plate 1304 and the outer side of the pipeline. If it is detected that the fit is not tight, the electric air charging and pumping pump 1311 on the bottom plate 1312 on both sides of the base 1 will start: if the fit needs to be increased, the electric air charging and pumping pump 1311 charges air into the air bag 1308 through the air guide pipe 1310, the air bag 1308 expands and synchronously drives the other air bag 1308 on the same side to expand through the connecting expansion pipe 1309, the expanded air bag 1308 will apply a pushing force to the flexible plate 1304, so that the flexible plate 1304 moves towards the pipeline direction until the inner arc plate 1305 and the outer arc plate 1302 are tightly fitted with the outer side of the pipeline; if the fit is too tight, the electric air charging and pumping pump 1311 will pump air out of the air bag 1308 through the air guide pipe 1310, the air bag 1308 will contract, and the flexible plate 1304 will retreat slightly with the air bag 1308, until the fit reaches the preset state, and the flexible plate 1304 near the pipeline port will be limited in transverse displacement by the detent 1307 to avoid excessive deviation.

[0035] When the curved pipeline 2 deforms due to thermal expansion and contraction, if the pipeline expands outward, the outer side of the pipeline will press the flexible plate 1304, and the flexible plate 1304 will move outward with the inner arc plate 1305 and the outer arc plate 1302, and the contact piece 11 on the arc plate 12 will press the pressure sensor 9; after receiving the pressing signal, the pressure sensor 9 sends a pumping instruction to the electric air charging and pumping pump 1311, the electric air charging and pumping pump 1311 pumps air out of the air bag 1308 through the air guide pipe 1310, and the air bag 1308 contracts to adapt to the expansion of the pipeline, so that the flexible plate 1304 always fits the outer side of the pipeline; if the pipeline contracts inward, a gap appears between the pipeline and the flexible plate 1304, the pressing force of the contact piece 11 on the pressure sensor 9 disappears, the pressure sensor 9 sends a charging instruction to the electric air charging and pumping pump 1311, the electric air charging and pumping pump 1311 charges air into the air bag 1308 through the air guide pipe 1310, the air bag 1308 expands and pushes the flexible plate 1304 to move towards the pipeline direction until the inner arc plate 1305 and the outer arc plate 1302 are tightly fitted with the outer side of the pipeline, so as to adapt to the deformation state of the pipeline.

[0036] In specific application scenarios, the flexible plate 1304 can be tightly fitted with the outer side of the curved pipeline 2 in the initial stage, and can dynamically adapt to the deformation of the pipeline due to thermal expansion and contraction, so as to always maintain stable fit and adapt to the pipeline shape under different conditions.

[0037] It should be noted that the flexible plate 1304 is in contact with the pipeline in cooperation with the inner and outer arc plates 1302, which can avoid the wear of the pipeline surface caused by rigid contact; at the same time, the buffering characteristics of the air bag 1308 can weaken the influence of pipeline deformation or external force impact on the assembly and the pipeline, and reduce the risk of structural damage.

[0038] With reference to Figure 1 、 Figure 7 and Figure 8 Both ends of the base 1 are provided with protection assemblies 18, the protection assemblies 18 include two extension pieces 1801, the inner sides of the extension pieces 1801 are fixedly connected with driving motors 1802, the power output shafts of the driving motors 1802 are connected with rotating shafts 1803 through couplings, and the outer sides of the rotating shafts 1803 are wound with pull ropes 1804.

[0039] In the application, the outer sides of the two pull ropes 1804 are provided with fixed plates 1805, one side of each of the fixed plates 1805 is fixedly connected to the inner side of the extension piece 1801, the side, away from the rotating shaft 1803, of each of the fixed plates 1805 is provided with an extrusion spring 1806, and the extrusion spring 1806 is located on the outer side of the pull rope 1804, and the end, away from the fixed plate 1805, of the extrusion spring 1806 and the pull rope 1804 is fixedly connected with a connecting piece 1808.

[0040] In the application, the side, close to the extrusion spring 1806, of each of the two connecting pieces 1808 is provided with a plurality of guide rods 1807, a plurality of round holes are formed in the fixed plate 1805, the guide rods 1807 are movably connected in the round holes, the inner side of the connecting piece 1808 is fixedly connected with a moving rod 1809, the outer side of the moving rod 1809 is fixedly connected with a moving seat 1810, the top end of the extension plate is provided with a hole slot, the moving seat 1810 is movably connected in the hole slot, the side, close to the driving motor 1802, of the moving seat 1810 is fixedly connected with a reset rod 1811, one end of the reset rod 1811 is fixedly connected to the inner side of the extension piece 1801, the top end of the moving seat 1810 is fixedly connected with a moving plate 1814, the top end of each of the two moving plates 1814 is fixedly connected with a right connecting plate 1812 and a left connecting plate 1813.

[0041] Specifically, first, start the drive motor 1802 inside the extension 1801, the power output shaft through the shaft coupling drive rotating shaft 1803 synchronous rotation, rotating shaft 1803 rotation will gradually wind the outside of the pull rope 1804; at this time, the pull rope 1804 away from the rotating shaft 1803 one end will pull the connecting piece 1808 to move closer to the direction of the drive motor 1802, while the connecting piece 1808 side of the guide rod 1807 will along the fixed plate 1805 on the hole synchronous sliding (play limiting guide role), and the fixed plate 1805 and the connecting piece 1808 between the compression spring 1806 will be compressed by the connecting piece 1808, store elastic potential energy, with the movement of the connecting piece 1808, the inside fixed moving rod 1809 will be synchronized to drive the outside of the moving seat 1810, along the extension plate top end hole groove smooth sliding, while the moving seat 1810 side of the reset rod 1811 will be stretched; moving seat 1810 sliding process, the top fixed moving plate 1814 will be moved together, eventually make two moving plate 1814 top right plate 1812 and left plate 1813 close to each other and accurate docking closed, forming a closed protective structure, the air bag 1308 outside wrapped up, complete the protection of the air bag 1308, after the right plate 1812 and left plate 1813 closed, filling the soil around the pipeline, further reinforce the protection effect.

[0042] In a specific application scenario, the protection assembly 18 is closed after filling the soil around the pipeline, which not only protects the air bag 1308, but also assists in enhancing the structural integrity of the equipment and pipeline installation area, and improves the overall fixing effect.

[0043] It should be noted that the setting of the compression spring 1806 can buffer the impact force of the connecting piece 1808 when the rope is pulled.

[0044] Referring to Figures 1-4In a preferred implementation, the top end of the base 1 is fixedly connected with a fixing seat 3, the inner side of the fixing seat 3 is fixedly connected with a connecting rod 4, the outer side of the connecting rod 4 is provided with a left arc plate 5 and a right arc plate 6, the top end of the left arc plate 5 and the right arc plate 6 is provided with a hole, the inner side of the hole is provided with a bolt 7, the end of the right arc plate 6 away from the left arc plate 5 is provided with a fixing piece 8, the fixing piece 8 is located at the outer side of the bolt 7, the left arc plate 5 and the right arc plate 6 are provided with a pressure sensor 9, the opposite side of the left arc plate 5 and the right arc plate 6 is provided with two compression springs 10, the opposite side of the compression spring 10 is provided with an arc plate 12, the side of the arc plate 12 close to the pressure sensor 9 is provided with a touch piece 11, the top end of the base 1 is provided with a plurality of electric telescopic rods 14, the base 1 is provided with a plurality of through holes, the electric telescopic rod 14 is movably connected in the through hole, the telescopic end of the electric telescopic rod 14 is fixedly connected with a pressing plate 16, the top end of the pressing plate 16 is fixedly connected with a plurality of spring rods 15, the top end of the spring rod 15 is fixedly connected to the inner side of the bottom end of the base 1 of the bottom plate 1312, the side of the pressing plate 16 away from the electric telescopic rod 14 is fixedly connected with a plurality of ground nails 17.

[0045] A pipe fixing method for municipal pipe network laying, using a pipe fixing device for municipal pipe network laying as described above, comprising the following steps:

[0046] Step one, first, the left arc plate 5 and the right arc plate 6 are respectively attached to the outer side of the two ends of the curved pipe 2, and the left arc plate 5 and the right arc plate 6 are locked by the bolt 7 and the fixing piece 8 to complete the fixing of the pipe end; at the same time, the electric telescopic rod 14 is started, the telescopic end pushes the pressing plate 16 to move down, the ground nails 17 on the pressing plate 16 penetrate into the soil, and the overall stable position of the equipment is realized;

[0047] Step two, the flexible plate 1304 of the flexible fixing assembly 13 preliminarily contacts the outer side of the curved pipe 2, if the fit is not tight, the electric air pump 1311 fills or exhausts air through the air guide pipe 1310 to inflate or deflate the air bag 1308, and the inflation or deflation of the air bag 1308 drives the flexible plate 1304 to adjust the position, until the flexible plate 1304 is tightly attached to the outer side of the curved pipe 2;

[0048] Step three, the driving motor 1802 of the protection assembly 18 is started, the power output shaft drives the rotating shaft 1803 to rotate, the pulling rope 1804 is wound up, the pulling rope 1804 pulls the connecting piece 1808 to move, synchronously drives the moving rod 1809 and the moving seat 1810 to slide along the hole slot, and finally makes the right connecting plate 1812 and the left connecting plate 1813 on the top end of the moving plate 1814 mutually butt joint and close, to form protection on the outer side of the air bag 1308, and then the soil is filled around the pipe;

[0049] Step four, when the curved pipe 2 due to thermal expansion and contraction deformation, the outside will push the flexible plate 1304, so that the arc plate 12 on the contact member 11 extrusion pressure sensor 9; pressure sensor 9 trigger signal, control electric air pump 1311 adjust the amount of gas in the air bag 1308 (hot expansion, cold contraction when the air), let the flexible plate 1304 always with the curved pipe 2 outside keep in line with the deformation state of the pipe.

[0050] The above description is only the preferred embodiment of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art can make equivalent replacement or change within the technical range disclosed by the present application according to the technical solution and the inventive concept of the present application, which should be covered within the protection scope of the present application.

Claims

1. A pipe fixing device for laying a municipal pipe network, comprising a base (1), characterised in that, The upper side of the base (1) is provided with a curved pipeline (2), and the outer sides of the two ends of the curved pipeline (2) are provided with flexible fixing assemblies (13), the flexible fixing assembly (13) comprises two positioning rods (1301), the curved pipeline (2) is provided with two symmetrical flexible plates (1304) at the bending position, and the positioning rod (1301) is located between the two flexible plates (1304), and the opposite sides of the symmetrical flexible plates (1304) are fixedly connected with two air bags (1308), and one end of the two air bags (1308) is fixedly connected with a connecting telescopic pipe (1309), and the two air bags (1308) are connected. The two sides of the base (1) are fixedly connected with two symmetrical bottom plates (1312), the top ends of the bottom plates (1312) are fixedly connected with electric air charging pumps (1311), and the output ends of the electric air charging pumps (1311) are fixedly connected with air pipes (1310), and the top ends of the air pipes (1310) are fixedly connected to the bottom ends of the air bags (1308). The outer sides of the positioning rods (1301) located on the inner side are provided with inner arc plates (1305) and inner connecting plates (1306), the opposite sides of the inner arc plates (1305) and the inner connecting plates (1306) are fixedly connected to the opposite sides of the flexible plates (1304), and the outer sides of the positioning rods (1301) are provided with outer arc plates (1302) and outer connecting plates (1303), the opposite sides of the outer arc plates (1302) and the outer connecting plates (1303) are fixedly connected to the opposite sides of the flexible plates (1304), and the sides of the flexible plates (1304) close to the ports of the curved pipeline (2) are provided with clamping parts (1307), and the bottom ends of the clamping parts (1307) are fixedly connected to the top ends of the base (1). The top ends of the base (1) are fixedly connected with fixing seats (3), the inner sides of the fixing seats (3) are fixedly connected with connecting rods (4), the outer sides of the connecting rods (4) are provided with left arc plates (5) and right arc plates (6), and the top ends of the left arc plates (5) and the right arc plates (6) are provided with holes, the inside of the holes is provided with bolts (7), one end of the right arc plate (6) away from the left arc plate (5) is provided with a fixing part (8), the fixing part (8) is located on the outer side of the bolt (7), and the left arc plate (5) and the right arc plate (6) are provided with pressure sensors (9). The opposite sides of the left arc plate (5) and the right arc plate (6) are provided with two compression springs (10), the opposite sides of the compression springs (10) are provided with arc plates (12), and the sides of the arc plates (12) close to the pressure sensors (9) are provided with contact parts (11).

2. A pipe fixing device for laying a municipal pipe network according to claim 1, characterized in that, The two ends of the base (1) are provided with protection assemblies (18), the protection assembly (18) comprises two extension parts (1801), the inner sides of the extension parts (1801) are fixedly connected with driving motors (1802), the power output shafts of the driving motors (1802) are connected with rotating shafts (1803) through couplings, and the outer sides of the rotating shafts (1803) are wound with pulling ropes (1804).

3. A pipe fixing device for laying a municipal pipe network according to claim 2, characterized in that, Both outer sides of the two pulling ropes (1804) are provided with fixed plates (1805), one side of each of the fixed plates (1805) is fixedly connected to the inner side of the extension piece (1801), one side of each of the fixed plates (1805) away from the rotating shaft (1803) is provided with an extrusion spring (1806), and each of the extrusion springs (1806) is located at the outer side of the pulling rope (1804), and one end of each of the extrusion spring (1806) and the pulling rope (1804) away from the fixed plate (1805) is fixedly connected with a connecting piece (1808).

4. A pipe fixing device for laying a municipal pipe network according to claim 3, characterized in that One side of each of the two connecting pieces (1808) close to the extrusion spring (1806) is provided with a plurality of guide rods (1807), a plurality of round holes are formed in the fixed plate (1805), each of the guide rods (1807) is movably connected in the round hole, the inner side of each of the connecting pieces (1808) is fixedly connected with a moving rod (1809), the outer side of each of the moving rods (1809) is fixedly connected with a moving seat (1810), the top end of the extension plate is provided with a hole slot, each of the moving seats (1810) is movably connected in the hole slot, one side of each of the moving seats (1810) close to the driving motor (1802) is fixedly connected with a reset rod (1811), one end of each of the reset rods (1811) is fixedly connected to the inner side of the extension piece (1801), the top end of each of the moving seats (1810) is fixedly connected with a moving plate (1814), and the top end of each of the two moving plates (1814) is fixedly connected with a right connecting plate (1812) and a left connecting plate (1813) respectively.

5. A pipe fixing device for laying a municipal pipe network according to claim 4, characterized in that The top end of each of the bases (1) is provided with a plurality of electric telescopic rods (14), a plurality of through holes are formed in the base (1), each of the electric telescopic rods (14) is movably connected in the through hole, and the telescopic end of each of the electric telescopic rods (14) is fixedly connected with a pressing plate (16). The top end of each of the pressing plates (16) is fixedly connected with a plurality of spring rods (15), and the top end of each of the spring rods (15) is fixedly connected to the inner side of the bottom end of the base (1) of the bottom plate (1312). One side of each of the pressing plates (16) away from the electric telescopic rod (14) is fixedly connected with a plurality of ground nails (17).

6. A pipe fixing method for laying a municipal pipe network, using a pipe fixing device for laying a municipal pipe network according to claim 5, characterized by, The method comprises the following steps: Step one: first, the left arc plate (5) and the right arc plate (6) are respectively attached to the outer sides of the two ends of the curved pipeline (2), the left arc plate (5) and the right arc plate (6) are locked by the bolts (7) and the fixed pieces (8) to fix the pipeline ends; at the same time, the electric telescopic rod (14) is started, the telescopic end pushes the pressing plate (16) to move downward, the ground nails (17) on the pressing plate (16) penetrate into the soil, and the overall position of the equipment is stably fixed; Step two: the flexible plate (1304) of the flexible fixing assembly (13) preliminarily contacts the outer side of the curved pipeline (2), if the attachment is not tight, the electric inflation and air pump (1311) inflates or deflates the air bag (1308) through the air guide pipe (1310), the inflation or deflation of the air bag (1308) drives the flexible plate (1304) to adjust the position, until the flexible plate (1304) is tightly attached to the outer side of the curved pipeline (2). Step three, start the drive motor (1802) of the protection assembly (18), the power output shaft drives the rotating shaft (1803) to rotate, which will pull the rope (1804) to wind up, the pulling rope (1804) pulls the connecting piece (1808) to move, synchronously drives the moving rod (1809), the moving seat (1810) slides along the hole slot, and finally makes the right connecting plate (1812) and the left connecting plate (1813) on the top end of the moving plate (1814) mutually butt joint and close, forming protection outside the air bag (1308), and then filling soil around the pipeline; Step four, when the curved pipeline (2) deforms due to thermal expansion and cold shrinkage, the outside will push the flexible plate (1304), so that the contact element (11) on the arc plate (12) extrudes the pressure sensor (9); after the pressure sensor (9) triggers a signal, the electric air pump (1311) adjusts the amount of gas in the air bag (1308), so that the flexible plate (1304) always keeps in close contact with the outside of the curved pipeline (2), and adapts to the deformation state of the pipeline.

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