Flexible butt-joint connecting device of buried double-wall corrugated pipe

Abstract

The invention discloses a flexible butt-joint connecting device for a buried double-wall corrugated pipe, which belongs to the field of buried double-wall corrugated pipe connection and comprises a socket type rubber ring interface, a double-wall corrugated pipe, a position fixing device, a steel wire rope, a fixing device and a rope tightening device. Through cooperation of the position fixing device, the fixing device and the rope tightening device with the steel wire rope, the double-wall corrugated pipe is stably connected through the socket type rubber ring connector, and the phenomena of pipeline displacement and pipe floating in rainy seasons of the socket type rubber ring connector of the double-wall corrugated pipe after the connector is completed and the phenomenon of connector loosening caused by the phenomena are effectively avoided. The device is small in size, light in weight, free of specification and convenient to carry, the same connector tool combination can be used for a double-wall corrugated pipe and concrete pipe mixing system, and the engineering quality and the working efficiency can be effectively improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of buried double-wall corrugated pipe connection, in particular to a flexible butt joint device of buried double-wall corrugated pipe. BACKGROUND

[0002] With the implementation of the national policy of "replacing wood with plastic and replacing steel with plastic", the double-wall corrugated pipe has obvious advantages compared with the traditional drainage pipe, especially the cement socket pipe, in the long-term practical use. The double-wall corrugated pipe has the characteristics of small roughness coefficient of inner surface, no scaling, long service life, good shock resistance, etc., and has been widely applied.

[0003] The existing double-wall corrugated pipe adopts the traditional construction method, and the butt joint tool used is the steel double-wall corrugated pipe tensioning tool on the market. The tool is relatively troublesome to assemble on site, occupies a place, and one set of tool is needed for one specification of sewage pipe, which is not convenient to carry. After the completion of the socket rubber ring interface of the double-wall corrugated pipe, the pipe material is light and easy to move, and the pipe is easy to "float" in the rainy season. In order to ensure the quality of the interface, a pipe locking process should be provided. According to the locking of three groups of pipes for one butt joint, four sets of tensioning tools are needed for one specification of sewage pipe. During on-site construction, the assembly is not convenient to transport, and the assembly on site is also relatively troublesome. SUMMARY

[0004] The purpose of the present application is to solve the problems raised in the background art, and to provide a flexible butt joint device of buried double-wall corrugated pipe.

[0005] The technical scheme of the present application to achieve the above-mentioned purpose is as follows: A flexible butt joint device of buried double-wall corrugated pipe, comprising a socket rubber ring interface, a double-wall corrugated pipe, a position fixing device, a steel wire rope, a fixing device, and a rope tightening device.

[0006] The socket rubber ring interface is respectively provided with a double-wall corrugated pipe at both ends.

[0007] The position fixing device is installed on the double-wall corrugated pipe and is used to provide a fixed point for the fixing device.

[0008] The steel wire rope is respectively provided with a fixing device at both ends, and the middle part of the steel wire rope is provided with a rope tightening device.

[0009] The fixing device is installed on the position fixing device and is used to connect the two sides of the steel wire rope with the double-wall corrugated pipe.

[0010] The rope tightening device is installed on the middle part of the steel wire rope and is used to tighten the two ends of the steel wire rope to the center part.

[0011] Preferably, the position fixing device comprises a connecting steel pipe, an adjusting screw, a connecting ring, a hinged block and an iron rope ring, the connecting steel pipe is threadedly connected with an adjusting screw at each end, the adjusting screw is fixed with a connecting ring on the side away from the connecting steel pipe, the connecting ring is hinged to one side of the hinged block, and the iron rope ring is hinged to the other side of the hinged block.

[0012] Preferably, the connecting steel pipe is provided with an observation hole.

[0013] Preferably, the fixing device comprises a capped bolt, a fixed steel pipe and an elastic movable hook, the capped bolt is threadedly connected with the fixed steel pipe, the steel wire rope is passed through the center of the fixed steel pipe and is pressed and fixed by the capped bolt, the fixed steel pipe is fixed with the elastic movable hook on the side away from the capped bolt, and the elastic movable hook is installed on the position fixing device.

[0014] Preferably, the rope tightening device comprises a square steel, a connecting shaft, a ratchet wheel, a center shaft, a return spring and a stop card, the square steel is rotatably installed with a connecting shaft at each end, the connecting shaft is fixed with a ratchet wheel, the center of the square steel is fixed with a center shaft, the center shaft is fixed with a return spring, the return spring is fixed with a stop card at each end, the stop card is rotatably installed at the end of the center shaft, the stop card is in contact with the ratchet wheel on the side away from the center shaft, and the two steel wire ropes are wound around the two connecting shafts.

[0015] Preferably, the double-wall corrugated pipe is provided with a pipeline temporary fixing device to prevent the double-wall corrugated pipe from being displaced during installation.

[0016] Preferably, the pipeline temporary fixing device comprises four-rib wooden nails, plastic ropes and a hole wooden stick, two four-rib wooden nails are installed on the pipe bases on the two sides of the double-wall corrugated pipe, one plastic rope is fixed on each four-rib wooden nail, and the two plastic ropes are wound around the hole wooden stick on the side away from the four-rib wooden nail.

[0017] Preferably, asbestos cement is arranged at the connection between the socket-type rubber ring joint and the double-wall corrugated pipe.

[0018] The flexible joint connecting device for the buried double-wall corrugated pipe is provided, the double-wall corrugated pipe is stably connected through the socket-type rubber ring joint by the cooperation of the position fixing device, the fixing device and the rope tightening device with the steel wire rope, the pipeline displacement of the double-wall corrugated pipe socket-type rubber ring joint after the completion of the joint, the "floating pipe" phenomenon in the rainy season and the joint loosening phenomenon caused thereby are effectively avoided.

[0019] The application is small in size, light in weight, convenient to carry, and can effectively improve the engineering quality and work efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is a structural schematic diagram of the application.

[0021] Figure 2 is a side structural schematic diagram of the position fixing device of the application.

[0022] Figure 3 is a partial structural schematic diagram of the position fixing device of the application.

[0023] Figure 4 is a top structural schematic diagram of the hinge block of the application.

[0024] Figure 5 is a structural front view and side view of the fixing device of the application.

[0025] Figure 6 is a main view and partial top and bottom view of the rope tightening device of the application.

[0026] Figure 7 is a use schematic diagram and plane structural schematic diagram of the pipeline temporary fixing device of the application.

[0027] In the figure: 1, socket rubber ring interface; 2, double-wall corrugated pipe; 3, position fixing device; 4, steel wire rope; 5, fixing device; 6, rope tightening device; 7, observation port; 8, pipeline temporary fixing device; 9, asbestos cement; 301, connecting steel pipe; 302, adjusting screw; 303, connecting ring; 304, hinge block; 305, iron rope ring; 501, bolt with cap; 502, fixed steel pipe; 503, elastic movable hook safety hook; 601, square steel; 602, connecting shaft; 603, ratchet wheel; 604, center shaft; 605, return spring; 606, stop card; 801, four-edged wooden nail; 802, plastic rope; 803, hole wooden stick. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the application will be clearly and completely described below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, rather than all the embodiments of the application. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the application.

[0029] As Figures 1-7As shown, the embodiment provides a flexible butt joint device for buried double-wall corrugated pipe, which comprises a socket rubber ring interface 1, double-wall corrugated pipes 2, a position fixing device 3, a steel wire rope 4, a fixing device 5, and a tight rope device 6. The socket rubber ring interface 1 is respectively provided with a double-wall corrugated pipe 2 at both ends.

[0030] The position fixing device 3 is installed on the double-wall corrugated pipe 2, and is used for providing a fixing point for the fixing device 5.

[0031] The steel wire rope 4 is respectively provided with the fixing device 5 at both ends, and the tight rope device 6 is installed on the middle part of the steel wire rope 4.

[0032] The fixing device 5 is installed on the position fixing device 3, and is used for connecting the steel wire rope 4 on both sides with the double-wall corrugated pipe 2.

[0033] The tight rope device 6 is installed on the middle part of the steel wire rope 4, and is used for pulling the steel wire rope 4 on both ends to the central part.

[0034] When the double-wall corrugated pipe 2 is constructed and grooved, the groove bottom is prohibited from being disturbed, and the original soil is tried to be kept. When the groove bottom is reserved by 200-300 mm soil layer by mechanical excavation to the design elevation and is leveled by manual excavation, overexcavation is not allowed. The groove soil should be cleaned up as soon as it is excavated. During the groove excavation process and after the groove is formed, the vibration load should be avoided on the groove top. After the groove is formed, the foundation and pipeline should be laid as soon as possible to avoid long-time groove storage. The groove bottom should not be soaked by water or frozen. When the groove bottom is locally disturbed or soaked by water, the natural graded sand and gravel should be backfilled to the design elevation. When the groove bottom soil layer is miscellaneous fill or corrosive soil, the miscellaneous fill should be completely excavated and the natural graded gravel should be backfilled to the design elevation.

[0035] Taking the lime-soil cushion pipe foundation as an example, the pipeline foundation is provided with a 300 mm soil cushion, which is manually rammed and has a compaction coefficient not less than 0.95. A 300 mm thick 3:7 lime-soil cushion is arranged on the soil cushion, which is manually rammed and has a compaction coefficient not less than 0.95. The bearing capacity of the pipeline foundation needs to reach 100 KN / m. The pipeline foundation is provided with a 15 cm medium-coarse sand foundation. The bearing capacity of the pipeline foundation is not less than 100 KPa.

[0036] The pipe is lowered by using the manual and mechanical hoisting combination, and is hoisted to prevent the pipeline from being damaged.

[0037] Before the pipe is lowered, the inner surface of the HDPE double-wall corrugated pipe 2 is rechecked for cracks, delamination and bubbles, the thickness of the pipe and the ellipticity of the pipe opening, the smoothness of the inner wall, the consistency of the appearance color of the pipe, the pipe without cracks, depressions and visible defects, and whether the rubber ring and other accessories are deformed.

[0038] When connecting the double-wall corrugated pipe 2 drain pipe through the socket rubber ring interface 1, before the interface, the rubber ring should be checked whether it is complete, the rubber ring installation position and the insertion depth of the socket are confirmed, the rubber installation position should be in the second and third corrugated groove, when using two sealing rings, it is recommended that the two sealing rings are separated by one corrugation.

[0039] When the interface operation, the inner and outer working surface of the socket and the socket should be cleaned with face cloth, and there should be no dirt and other sundries, and lubricant should be applied, the insertion direction is the water flow direction, then the center of the socket end is immediately aligned with the center of the socket, and the center axis 604 is in place. Before insertion, the insertion depth should be used as a position identification to determine whether it is inserted in place.

[0040] When the interface operation, the inner and outer working surface of the socket and the socket should be cleaned with face cloth, and there should be no dirt and other sundries, and lubricant should be applied, the insertion direction is the water flow direction, then the center of the socket end is immediately aligned with the center of the socket, and the center axis 604 is in place. Before insertion, the insertion depth should be used as a position identification to determine whether it is inserted in place.

[0041] Because the HDPE double-wall corrugated pipe 2 drain pipe is light and easy to move, after the socket rubber ring interface 1 is connected, the embodiment is not removed, the seal is pressed on the top of the installed pipeline, and partial backfilling is performed on both sides. In addition to the interface, backfilling is performed to basically reach the height, which can effectively ensure that the interface of the completed pipeline axis does not move in position. The pipeline temporary fixing device 8 is mainly formed by a combination of four-rib wooden nails 801, plastic ropes 802 and hole wooden sticks 803. The four-rib wooden nails 801 are 20x20x150 in size and are used to be nailed on both sides of the working pipe. One end is folded and knotted into a double-line ring, the hole wooden stick 803 is φ10*50 wooden stick with a hole in the middle, one end of the plastic rope 802 is tied to the four-rib wooden nail 801, and the other end passes through the hole of the hole wooden stick 803 and is folded. The hole wooden stick 803 is passed through the knotted double-line ring and the folded line rope head is pulled tight. The hole wooden stick 803 is returned from the loop and can be reused.

[0042] The pipeline temporary fixing device 8 is low in combination cost and can be directly backfilled when backfilling earthwork. The pipeline temporary fixing device 8 is provided with a group every two meters, which can effectively avoid displacement, water floating and pulling out.

[0043] In the embodiment, the position fixing device 3 includes a connecting steel pipe 301, an adjusting screw 302, a connecting ring 303, a hinged block 304 and an iron rope ring 305. The connecting steel pipe 301 is threadedly connected with one adjusting screw 302 at each end. The adjusting screw 302 is fixedly provided with the connecting ring 303 away from the connecting steel pipe 301. The connecting ring 303 is hingedly connected to one side of the hinged block 304. The other end of the iron rope ring is hingedly connected to the other side of the hinged block 304.

[0044] The position fixing device 3 is made of Ф22*3 seamless steel pipe, and the connecting steel pipe 301 is connected by the steel pipe. The two ends of the connecting steel pipe 301 are connected by 4mm steel plate end cover, and the pipe length of the end cover part is 88mm. A 9mm opening is vertically opened on the two sides of the end cover, and a 9mm pipe skin strip is connected between the upper and lower parts. The hinge part of the position fixing device 3 is symmetrical on both sides. The top and bottom layers of the hinge block 304 are 43.97*24, and the two ends are formed into two semicircles with a radius of 12mm. Two 4mm radius holes are arranged at the center of the semicircle, and M6 bolts pass through the holes. The bottom layer bolt is flush with the bottom layer bottom plane, and the two sides are welded and fixed by electric welding. The top layer bolt passes through the hole, and the hinge block 304 is composed of a nut adjustable rivet by a screw. The middle part of the hinge block 304 is a combination of adjusting screw 302, which is composed of a connecting ring 303 with a diameter of δ=6mm and a M6mm adjusting screw 302. The inner diameter of the ring is 8mm, the outer diameter of the ring is 20mm, and the total length of the combination is 69mm.

[0045] The middle layer of the position fixing device 3 is a three-layer structure, and the middle layer is hingedly connected with the iron rope ring 305 at any angle through the adjusting screw 302 combination, so as to adapt to different specifications of the double-wall corrugated pipe 2. The left and right can be a plane, or a 90 degree angle or any angle to facilitate connection with the iron rope ring 305.

[0046] In the embodiment, the connecting steel pipe 301 is provided with an observation port 7, and the observation port 7 is opened on the connecting steel pipe 301. The slot is conveniently observed and avoids the interference of the adjusting screw 302.

[0047] In the embodiment, the fixing device 5 includes a capped bolt 501, a fixed steel pipe 502, and a flexible live hook 503. The capped bolt 501 is connected to the fixed steel pipe 502 by threads, and the steel wire rope 4 passes through the center of the fixed steel pipe 502 and is tightly fixed by the capped bolt 501. The fixed steel pipe 502 is provided with a flexible live hook 503 on the side away from the capped bolt 501, and the flexible live hook 503 is installed on the position fixing device 3.

[0048] The fixing device 5 is made of a Ф16*3.2 seamless steel pipe with a length of 50mm, and a hole is punched in the middle of the fixed steel pipe 502 and is tapped with a tap. The size of the tap is M6mm, and a finished flexible live hook 503 is welded on the back of the tap hole. The fixing device 5 can be fixed at the 3 o'clock, 9 o'clock and 12 o'clock positions of the position fixing device 3 through the flexible live hook 503, so as to facilitate the combination of the tight rope device 6 and the flexible alignment of the double-wall corrugated pipe 2.

[0049] In the embodiment, the tight rope device 6 comprises square steel 601, connecting shaft 602, ratchet 603, center shaft 604, positive return spring 605, and retreat stop card 606. The square steel 601 is rotatably installed with a connecting shaft 602 at each end. The ratchet 603 is fixed on each connecting shaft 602. The center shaft 604 is fixed on the center position of the square steel 601. The positive return spring 605 is fixed on the center shaft 604. The retreat stop card 606 is rotatably installed on the end of the center shaft 604. The retreat stop card 606 is in contact with the ratchet 603 at the end away from the center shaft 604. Two steel wires 4 are wound on the two connecting shafts 602.

[0050] The tight rope device 6 is mainly made of 40*4 square steel 601 with a length of 119 mm. Two pieces of steel plate are cut off from the bottom and top of the two ends of the square steel 601. The middle part is reserved for punching and symmetrically installing the positive return spring 605. The positive return spring 605 is welded with the center shaft 604. The connecting shaft 602 is made of Ф12 mm round steel. A barrel ring with a thickness of δ=2 mm and a width of 4 mm is used to fix the head of the Ф6 mm steel wire 4 at the shaft end of the winch. The head of the steel wire 4 is sealed with epoxy resin glue. When in use, the head of the steel wire 4 can be inserted into the hole. When the double-wall corrugated pipe 2 is connected through the socket rubber ring joint 1, a hexagonal jack barrel wrench can be used to press on the standard hexagonal nut outside the connecting shaft 602. The steel wire 4 is operated by the connecting shaft 602 to realize the work of the double-wall corrugated pipe 2 on the socket rubber ring joint 1.

[0051] The length of the steel wire 4 is calculated as follows: the distance between the fixing devices 5 is 350 (the length of the socket pipe of the double-wall corrugated pipe 2) * 2 (the double socket of the pipe clamp) + 200 + 200 (the distance between the devices and the length of the socket) + 150 + 150 (the reserved length) = 1400 m.

[0052] At both ends of the steel wire 4, two standard steel wire clamps are used to make a working ring by folding twice, which is convenient for small pipe diameter operation.

[0053] In the embodiment, the double-wall corrugated pipe 2 is provided with a pipeline temporary fixing device 8 for preventing the double-wall corrugated pipe 2 from being displaced during installation.

[0054] Because the double-wall corrugated pipe 2 has a light weight, the pipe body is easily displaced due to wind load or human factors during construction. In particular, during the rainy season, the pipe is easily displaced, which causes the joint to be loose. Therefore, during construction, the pipeline temporary fixing device 8 is used to fix the double-wall corrugated pipe 2.

[0055] In the embodiment, the pipeline temporary fixing device 8 comprises four wooden nails 801, plastic ropes 802 and a wooden stick 803 with holes. Two four wooden nails 801 are respectively installed on the pipe bases on both sides of the double-wall corrugated pipe 2. Each four wooden nail 801 is respectively fixed with a plastic rope 802. The two plastic ropes 802 are wound on the wooden stick 803 with holes at the ends away from the four wooden nails 801.

[0056] The pipeline temporary fixing device 8 is formed by the combination of the four wooden nails 801, the plastic ropes 802 and the wooden stick 803 with holes. The four wooden nails 801 are 20x20x150 in size and are used to be nailed on the pipe bases on both sides of the working pipe. One end of each plastic rope 802 is tied on the wooden nail and the other end is knotted to form a double-line loop. The wooden stick 803 with holes is punched in the middle. One end of each plastic rope 802 is tied on the wooden nail and the other end is passed through the small hole of the wooden stick and knotted. The knot is pulled tight and relies on the friction resistance to achieve the fixing and tightening effect. When it is needed to be removed, the wooden stick 803 with holes is returned from the loop to achieve the effect. The pipeline temporary fixing device 8 has low combination cost and can be directly backfilled when backfilling. It can also be pulled out for reuse. The pipeline temporary fixing device 8 is provided every two meters.

[0057] In the embodiment, the socket rubber ring joint 1 is provided with the asbestos cement 9 at the connection with the double-wall corrugated pipe 2. The asbestos cement 9 is sealed at the connection of the socket rubber ring joint 1 and the double-wall corrugated pipe 2. After the double-wall corrugated pipe 2 is connected, the asbestos cement 9 is sealed to prevent the soil from corroding the rubber ring, thereby prolonging the service life of the rubber ring. When the sewage in the pipe corrodes the rubber ring and causes water seepage and leakage, the asbestos cement 9 will expand to form a waterproof and leakage-proof combination with a certain strength by using the strength of the cement and the expansion characteristics of the asbestos, thereby effectively prolonging the service life of the pipe network system.

[0058] In the embodiment, when the double-wall corrugated pipe 2 is constructed and grooved, the groove bottom is prohibited from being disturbed and the original soil is kept as much as possible. The groove bottom is reserved with 200-300mm soil layer by manual excavation to the design elevation during mechanical excavation, which is not allowed to be over-excavated. The groove soil should be cleaned immediately after excavation. During the groove excavation process and after the groove is formed, the groove top should avoid vibration load. The foundation and pipeline should be laid as soon as possible after the groove is formed to avoid long-term groove exposure. The groove bottom should not be soaked in water or frozen. When the groove bottom is locally disturbed or soaked in water, the natural graded sand and gravel should be backfilled to the design elevation. When the groove bottom soil layer is miscellaneous fill or corrosive soil, the natural graded gravel should be used to backfill to the design elevation.

[0059] Take the lime-soil cushion pipe foundation as an example, the pipe foundation is provided with a 300mm soil cushion, which is artificially rammed with a compaction coefficient not less than 0.95, and a 300mm thick 3:7 lime-soil cushion, which is artificially rammed with a compaction coefficient not less than 0.95. The bearing capacity of the pipe foundation needs to reach 100KN / m. The pipe foundation is laid with a 15cm medium-coarse sand foundation. The bearing capacity of the pipe foundation is not less than 100KPa.

[0060] The pipe is lowered by a combination of manual and mechanical hoisting, and is hoisted to prevent damage to the pipe.

[0061] Before the pipe is lowered, the inner surface of the HDPE double-wall corrugated pipe 2 drainage pipe is checked again for cracks, delamination and bubbles, the pipe thickness and the pipe opening ellipticity, the inner wall is required to be smooth and flat, the pipe appearance color is consistent, the pipe cannot have cracks, depressions and visible defects, and the rubber ring and other accessories are not deformed.

[0062] When the double-wall corrugated pipe 2 drainage pipe is connected by the socket rubber ring interface 1, the rubber ring should be checked before the interface, and the rubber ring installation position and the insertion depth of the socket are confirmed. The rubber installation position should be in the groove between the second and third corrugations, and when two sealing rings are used, it is recommended that the two sealing rings are separated by one corrugation.

[0063] During the interface operation, the inner and outer working surfaces of the socket and the socket should be cleaned with gauze, and there should be no dirt and other impurities, and a lubricant should be applied. The insertion direction is the water flow direction, and then the center of the socket end is aligned with the center of the socket center axis 604. Before insertion, the insertion depth is used as a position recognition to determine whether the insertion is in place.

[0064] During the alignment operation, the position fixing device 3 is installed on the double-wall corrugated pipe 2, and the position fixing device 3 has a three-layer structure. The middle layer is hinged with the iron rope ring 305 at any angle through the combination of the connecting ring 303 and the adjusting screw 302, which can adapt to double-wall corrugated pipes 2 of different specifications. The left and right can be a plane, 90 degrees or any angle to facilitate connection with the iron rope ring 305.

[0065] After the position fixing device 3 is installed, the fixing device 5 at both ends of the steel wire rope 4 is installed on the position fixing device 3, and the fixing device 5 can be fixed on the position fixing device 3 at the 3 o'clock, 9 o'clock and 12 o'clock positions through the elastic live hook safety hook 503, so that the flexible alignment of the double-wall corrugated pipe 2 can be conveniently performed by the combination of the tight rope device 6 and the like. Generally, when the pipes of 110, 125, 160, 200, 250 and 315 specifications are connected, the iron rope loop joint member (the combined member of the connecting steel pipe 301, the adjusting screw 302, the connecting ring 303 and the hinged block 304) is located at the 3 o'clock position, and a set of flexible alignment system combination (the steel wire rope 4, the fixing device 5, the tight rope device 6 and the like) is arranged at the 12 o'clock position. When the pipes of 400, 500, 630 and 800 specifications are connected, the iron rope loop joint member (the combined member of the connecting steel pipe 301, the adjusting screw 302, the connecting ring 303 and the hinged block 304) is located at the 12 o'clock position, and two sets of flexible alignment system combinations (the steel wire rope 4, the fixing device 5, the tight rope device 6 and the like) are arranged at the 3 o'clock and 9 o'clock positions. When the pipes of 1000 and 1200 specifications are connected, the iron rope loop joint member (the combined member of the connecting steel pipe 301, the adjusting screw 302, the connecting ring 303 and the hinged block 304) is located at the 1.5 o'clock position, and three sets of flexible alignment system combinations (the steel wire rope 4, the fixing device 5, the tight rope device 6 and the like) are arranged at the 3 o'clock, 9 o'clock and 12 o'clock positions.

[0066] After the steel wire rope 4 is fixed, the tight rope device 6 is tightened, and a six-joint socket wrench is pressed on the standard six-joint nut outside the connecting shaft 602 to tighten the steel wire rope 4 through the connecting shaft 602, so that the double-wall corrugated pipe 2 can work on the pull-in alignment socket joint interface 1.

[0067] Since the HDPE double-wall corrugated pipe 2 is light and easy to move, after the socket joint interface 1 is connected, the present application is not removed and backfilled to basically reach the height, so that the position movement of the pipe axis after the interface is closed can be effectively ensured. The pipeline temporary fixing device 8 is mainly formed by a four-rib wooden nail 801, a plastic rope 802 and a hole wooden stick 803 combination, the four-rib wooden nail 801 is 20x20x150 in size and is used to be nailed on the pipe base on both sides of the working pipe, one end is folded and knotted into a double-line ring, the hole wooden stick 803 is a φ10*50 wooden stick with a hole in the middle, one end of the plastic rope 802 is tied on the four-rib wooden nail 801, one end passes through the hole of the hole wooden stick 803 and is folded, the hole wooden stick 803 passes through the knotted double-line ring and is pulled tight, relies on the friction resistance and plays a fixing and tightening role, when it is needed to be folded, the hole wooden stick 803 can be returned from the loop. The pipeline temporary fixing device 8 has low combination cost and can be directly backfilled when backfilling the earthwork or can be pulled out for repeated use. The pipeline temporary fixing device 8 is provided with a set every two meters, so that the displacement, water floating and pull-in phenomenon can be effectively avoided.

[0068] While embodiments of the present application have been shown and described, it is to be understood that various modifications, substitutions, replacements and variations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A flexible spigot and socket joint for buried twin wall corrugated pipe, characterised in that, It comprises a socket rubber ring interface (1), double-wall corrugated pipe (2), position fixing device (3), steel wire rope (4), fixing device (5), tight rope device (6); The socket rubber ring interface (1) is respectively provided with a double-wall corrugated pipe (2) at both ends; The position fixing device (3) is installed on the double-wall corrugated pipe (2) and is used for providing a fixing point for the fixing device (5); The steel wire rope (4) is respectively provided with a fixing device (5) at both ends, and the middle part of the steel wire rope (4) is provided with a tight rope device (6); The fixing device (5) is installed on the position fixing device (3) and is used for connecting the steel wire rope (4) on both sides with the double-wall corrugated pipe (2); The tight rope device (6) is installed at the middle position of the steel wire rope (4) and is used for pulling the both ends of the steel wire rope (4) to the central part.

2. A flexible spigot and socket joint for buried corrugated pipe according to claim 1 wherein, The position fixing device (3) comprises a connecting steel pipe (301), an adjusting screw (302), a connecting ring (303), a hinged block (304) and an iron rope ring (305), the connecting steel pipe (301) is respectively provided with an adjusting screw (302) at both ends through threaded connection, the adjusting screw (302) is fixedly provided with a connecting ring (303) on the side away from the connecting steel pipe (301), the connecting ring (303) is hinged on one side of the hinged block (304), and the iron rope ring (305) is hingedly connected to the other side of the hinged block (304).

3. A flexible spigot and socket joint for buried corrugated twin-wall pipe according to claim 2, characterised in that An observation port (7) is arranged on the connecting steel pipe (301).

4. A flexible bell and spigot joint for buried corrugated pipe according to claim 1 wherein, The fixing device (5) comprises a bolt with a cap (501), a fixed steel pipe (502) and an elastic movable hook safety hook (503), the bolt with a cap (501) is connected to the fixed steel pipe (502) through threaded connection, the end of the steel wire rope (4) passes through the center of the fixed steel pipe (502) and is tightly fixed through the bolt with a cap (501), the fixed steel pipe (502) is fixedly provided with the elastic movable hook safety hook (503) on the side away from the bolt with a cap (501), and the elastic movable hook safety hook (503) is installed on the position fixing device (3).

5. A flexible bell and spigot joint for buried corrugated pipe according to claim 1 wherein, The tight rope device (6) comprises a square steel (601), a connecting shaft (602), a ratchet wheel (603), a central shaft (604), a positive return spring (605) and a retreat stop card (606), the square steel (601) is rotatably provided with a connecting shaft (602) at both ends, the connecting shaft (602) is fixedly provided with a ratchet wheel (603), the square steel (601) is fixedly provided with a central shaft (604) at the center, the central shaft (604) is fixedly provided with a positive return spring (605), the positive return spring (605) is fixedly provided with a retreat stop card (606) at both ends, the retreat stop card (606) is rotatably installed on the end of the central shaft (604), the retreat stop card (606) is connected with the ratchet wheel (603) on the side away from the central shaft (604), and the two steel wire ropes (4) are wound on the two connecting shafts (602).

6. A flexible bell and spigot joint for buried corrugated pipe according to claim 1 wherein, The double-wall corrugated pipe (2) is provided with a pipeline temporary fixing device (8) for preventing the double-wall corrugated pipe (2) from being displaced during installation.

7. A flexible spigot and socket joint for buried corrugated twin-wall pipe according to claim 6, characterised in that The pipeline temporary fixing device (8) comprises four-cornered wooden nails (801), plastic ropes (802) and a wooden stick with holes (803), two four-cornered wooden nails (801) are respectively installed on the pipe bases on the two sides of the double-wall corrugated pipe (2), one plastic rope (802) is respectively fixed on each four-cornered wooden nail (801), and the two plastic ropes (802) are wound on the wooden stick with holes (803) away from the four-cornered wooden nails (801).

8. A flexible bell and spigot joint for buried corrugated pipe according to claim 1 wherein, The bell-and-spigot rubber ring joint (1) is provided with asbestos cement (9) at the connection with the double-wall corrugated pipe (2), and the asbestos cement (9) is sealed at the connection of the bell-and-spigot rubber ring joint (1) and the double-wall corrugated pipe (2).

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