Auxiliary device for socket installation of nodular cast iron pipe
By designing a concentric support ring auxiliary device for docking of ductile iron pipe sockets, the problems of axial irregularity and rubber ring damage in the traditional method are solved, and an efficient and labor-saving installation process is achieved.
Patent Information
- Application Number
- CN202421755165.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-24
- Publication Date
- 2025-02-14
- Estimated Expiration
- 2034-07-24
AI Technical Summary
During the docking process of the socket of the ductile iron pipe, it is difficult for traditional methods to ensure that the axis of the installation pipe and the fixed pipe are coaxial, which easily damages the rubber ring and has low installation efficiency.
An auxiliary device consisting of two concentric support rings is designed, each supporting ring consisting of a half ring and a reinforcement ring. It is driven by a jack and a cylinder to close the support ring and shrink the piston rod of the cylinder, and drive the installation pipe toward the fixed pipe. move.
It ensures that the axis of the installation pipe and the fixed pipe is coaxial, protects the rubber ring, simplifies the installation process, reduces labor intensity and construction period, and improves construction efficiency.
Smart Images
Figure CN222472368U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of ductile iron pipe socket butt joint, in particular to an auxiliary device for ductile iron pipe socket installation. Background Art
[0002] Ductile iron pipes are made by adding alkaline earth metals such as magnesium and calcium or rare metal cast iron to ordinary cast iron pipes. They have the advantages of safe and reliable operation, low breakage rate, convenient and fast construction and maintenance, and excellent anti-corrosion performance. They are ideal materials for tap water pipes. When ductile iron pipes are connected at the socket joint, auxiliary devices are often required to ensure installation efficiency and installation accuracy.
[0003] One end of the ductile iron pipe is a socket, and the other end is a spigot. When docking the socket and spigot, the traditional method often uses a crane to lift the installation pipe to be installed to the docking position, and then uses a wire rope and a hand winch to tighten it, so that the spigot end of the installation pipe is gradually extended into the socket end of the fixed pipe to complete the socket and spigot docking of the two ductile iron pipes. When the resistance is large, the excavator bucket is used to apply horizontal thrust to the socket of the installation pipe to complete the installation. When this method is used for installation, there are often the following problems: First, it is impossible to ensure that the axes of the installation pipe and the fixed pipe are coaxial. In the process of the installation pipe extending into the fixed pipe, it is easy to damage the rubber ring in the fixed pipe, and it is impossible to ensure the uniformity of the rubber ring in the socket of the fixed pipe, which affects the sealing effect of the rubber ring and the installation quality of the ductile iron pipe; second, the installation process is time-consuming and labor-intensive, the installation period is long, and the installation efficiency is low. At present, some construction units also use a two-fixing ring structure, using two fixing rings to fix the ends of the two ductile iron pipes to be installed, and then use a tensioning device to close the distance between the two fixing rings, so as to achieve the docking of the two ductile iron pipes. This method can improve the docking efficiency to a certain extent, but each fixing ring is usually divided into two petals. In the process of closing the two petals into a complete ring to fix the ductile iron pipe, multiple bolts will be tightened in turn, which is time-consuming and labor-intensive, and the construction efficiency needs to be improved. Therefore, it is an objective need to develop an auxiliary device for the installation of ductile iron pipe sockets that is not easy to damage the rubber ring, saves time and labor, and can improve the installation efficiency. Utility Model Content
[0004] The utility model aims to provide an auxiliary device for the socket and spigot installation of ductile iron pipes, which is not easy to damage the rubber ring, saves time and labor, and can improve the installation efficiency.
[0005] The purpose of the utility model is achieved in this way, including two support rings with the same structure and concentrically arranged, each support ring is surrounded by two symmetrically arranged half rings, and a reinforcement ring is arranged on the inner side of each half ring. One end of the two half rings of the same support ring is rotatably connected by a rotating shaft, and the ends of the two half rings at the other end are provided with ear plates, one of which is processed with an open groove, a jack is installed on one side of the open groove, a push plate is arranged on the top of the push rod of the jack, and bolts are hinged on the other ear plate corresponding to the position of the open groove, a plurality of guide rods are evenly distributed on the circumference between the half rings of the two support rings, and limit plates are arranged after the two ends of the guide rod extend out of the half rings, and the guide rods are freely slidably connected to the half rings, and a cylinder is installed on one of the support rings, and a pull plate is arranged after the end of the piston rod of the cylinder extends out to the outside of the other support ring.
[0006] Furthermore, an anti-slip pad is provided on the inner surface of the reinforcement ring.
[0007] Furthermore, anti-slip protrusions are arranged on the inner surface of the anti-slip pad.
[0008] Furthermore, a plurality of reinforcing ribs are evenly distributed along the circumference between the half ring and the reinforcing ring.
[0009] Furthermore, the number of the cylinders is 2 to 4, which are evenly distributed along the circumference of the support ring.
[0010] Furthermore, the end of the piston rod of the cylinder is connected to the pull plate via a threaded connection.
[0011] The utility model is used for auxiliary installation when the socket of ductile iron pipe is butted. When in use, the installation pipe is firstly lifted to a position close to the fixed pipe by a crane, and then the socket end of the installation pipe is inserted into the socket end of the fixed pipe for a short length, and then the installation pipe and the fixed pipe can be butted by the utility model. The specific operation process is as follows: one support ring is located outside the socket of the fixed pipe, and the other support ring is located outside the socket of the installation pipe, and the half rings of the two support rings are closed respectively, and the bolts on the ear plate are rotated so that the bolts are located in the open grooves. Operate the jack to extend its push rod, driving the push plate to move until the push plate presses against the hexagonal head of the bolt, and use the jack to tightly close the two half rings together. At this time, the two half rings close together to form a complete circular ring, which is the support ring. The support ring is tightly clamped on the ductile iron pipe so that one of the support rings is connected to the fixed pipe as a whole, and the other support ring is connected to the installation pipe as a whole. Start the cylinder, and the piston rod of the cylinder contracts, which can drive the installation pipe to move in the direction of the fixed pipe until the socket of the installation pipe is inserted into the socket of the fixed pipe. When the socket of the ductile iron pipe is butted, the two support rings are of a concentric structure and are positioned by a guide rod, so the process of closing and fixing the support rings is the process of adjusting the position between the fixed pipe and the installation pipe. When the two support rings are fixedly connected to the fixed pipe and the installation pipe respectively, the position adjustment of the installation pipe is completed. At this time, the axes of the installation pipe and the fixed pipe are coaxial. In the process of the installation pipe extending into the fixed pipe, it is not easy to damage the rubber ring in the socket of the fixed pipe, and the uniformity of the rubber ring in the socket of the fixed pipe can be guaranteed, thereby ensuring the sealing effect of the rubber ring. and the installation quality of ductile iron pipes; secondly, compared with the existing auxiliary device structure that requires tightening several bolts, the utility model eliminates the complicated and laborious operation of tightening the bolts during use. When closing the support ring to tighten the ductile iron pipe, it is only necessary to simply operate the jack. The operation is simple, time-saving and labor-saving, which greatly reduces the labor intensity of the installation workers, shortens the installation period, and improves the construction efficiency. Compared with the traditional structure that uses a hand winch and a wire rope to push the installation pipe into the fixed pipe, the utility model uses a cylinder as a power source, which can reduce the labor intensity of the workers and improve the installation efficiency. In summary, the utility model has the advantages of not being easy to damage the rubber ring, saving time and labor, and improving the installation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0013] Figure 2 This is a schematic diagram of the structure of the support ring 1 in the utility model;
[0014] Figure 3 It is a structural schematic diagram of the middle ear plate 5 and the jack 6 of the utility model;
[0015] In the figure: 1-support ring, 2-half ring, 3-reinforcement ring, 4-rotating shaft, 5-ear plate, 6-jack, 7-push plate, 8-bolt, 9-guide rod, 10-limiting plate, 11-cylinder, 12-pull plate, 13-anti-slip pad, 14-anti-slip protrusion, 15-reinforcement rib, 16-mounting tube, 17-fixing tube. DETAILED DESCRIPTION
[0016] The present invention is further described below in conjunction with the accompanying drawings, but the present invention is not limited in any way. Any changes or improvements made based on the present invention belong to the protection scope of the present invention.
[0017] like Figures 1 to 3 As shown, the utility model comprises two support rings 1 of the same structure and arranged concentrically, each support ring 1 is surrounded by two symmetrically arranged half rings 2, a reinforcing ring 3 is arranged on the inner side of each half ring 2, one end of the two half rings 2 of the same support ring 1 is rotatably connected by a rotating shaft 4, and the ends of the two half rings 2 at the other end are provided with ear plates 5, one of the ear plates 5 is processed with an open groove, a jack 6 is installed on one side of the open groove, a push plate 7 is arranged on the top of the push rod of the jack 6, and a bolt 8 is hinged on the other ear plate 5 corresponding to the position of the open groove, a plurality of guide rods 9 are evenly distributed on the circumference between the half rings 2 of the two support rings 1, and limit plates 10 are arranged after the two ends of the guide rods 9 extend out of the half rings 2, and the guide rods 9 is freely slidably connected with the half ring 2. In actual use, a through hole can be processed on the half ring 2, and the guide rod 9 is arranged through the through hole. A certain gap is left between the guide rod 9 and the through hole. The gap is generally 1-2 mm to ensure that the guide rod 9 can automatically move in the through hole. The gap cannot be too large. Several guide rods 9 jointly ensure the coaxiality of the two support rings 1 and have a positioning function. At the same time, when the piston rod of the cylinder 11 contracts, the support ring 1 can slide along the guide rod 9 and has a guiding function to prevent twisting and dislocation between the two support rings 1. A cylinder 11 is installed on one of the support rings 1, and a pull plate 12 is provided after the piston rod end of the cylinder 11 extends to the outside of the other support ring 1.
[0018] The fixed pipe 17 described in the utility model refers to the ductile iron pipe that has been installed in the pipe trench, and the installation pipe 16 refers to the ductile iron pipe that needs to be installed. Generally, the socket end of the fixed pipe 17 is in an open state to be installed. During installation, the socket end of the installation pipe 16 is inserted into the socket end of the fixed pipe 17 to complete the installation of a ductile iron pipe.
[0019] The utility model is used for auxiliary installation when the socket of ductile iron pipe is butted. When in use, the installation pipe 16 is first hoisted to a position close to the fixed pipe 17 by a crane, and then the socket end of the installation pipe 16 is inserted into the socket end of the fixed pipe 17 for a short length, and the utility model can be used to complete the butt connection between the installation pipe 16 and the fixed pipe 17. The specific operation process is as follows:
[0020] Make one support ring 1 located outside the socket of the fixed pipe 17, and make the other support ring 1 located outside the socket of the mounting pipe 16, close the half rings 2 of the two support rings 1 respectively, turn the bolt 8 on the ear plate 5 so that the bolt 8 is located in the open groove, operate the jack 6 to extend its push rod, drive the push plate 7 to move, until the push plate 7 bears against the hexagonal head of the bolt 8, and then close the two half rings 2 tightly together through the jack 6. At this time, the two half rings 2 are closed to form a complete circular ring, which is the support ring 1. The support ring 1 is tightly clamped on the ductile iron pipe, so that one of the support rings 1 is connected to the fixed pipe 17 as a whole, and the other support ring 1 is connected to the mounting pipe 16 as a whole. Start the cylinder 11, and the piston rod of the cylinder 11 contracts, which can drive the mounting pipe 16 to move in the direction of the fixed pipe 17 until the socket of the mounting pipe 16 is inserted into the socket of the fixed pipe 17. When the socket of the ductile iron pipe is butted, since the two support rings 1 are of a concentric structure and are positioned by the guide rod 9, the process of closing and fixing the support rings 1 is the process of adjusting the position between the fixed pipe 17 and the mounting pipe 16. When the two support rings 1 are fixedly connected to the fixed pipe 17 and the mounting pipe 16 respectively, the position adjustment of the mounting pipe 16 is completed. At this time, the axes of the mounting pipe 16 and the fixed pipe 17 are coaxial. In the process of the mounting pipe 16 extending into the fixed pipe 17, it is not easy to damage the rubber ring in the socket of the fixed pipe 17, and the uniformity of the rubber ring in the socket of the fixed pipe 17 can be guaranteed, thereby ensuring the uniformity of the rubber ring in the socket of the fixed pipe 17. Prove the sealing effect of the rubber ring and the installation quality of the ductile iron pipe; secondly, compared with the structure of the existing auxiliary device that needs to tighten a number of bolts, the utility model eliminates the complicated and laborious operation of tightening the bolts during use. When closing the support ring 1 to tighten the ductile iron pipe, it is only necessary to simply operate the jack 6. The operation is simple, time-saving and labor-saving, which greatly reduces the labor intensity of the installation workers, shortens the installation period, and improves the construction efficiency. Compared with the traditional structure of using a hand winch and a wire rope to push the installation pipe 16 into the fixed pipe 17, the utility model uses the cylinder 11 as the power, which can reduce the labor intensity of the workers and improve the installation efficiency.
[0021] An anti-skid pad 13 is provided on the inner surface of the reinforcement ring 3. When the utility model is in use, the ductile iron pipe is clamped by the support ring 1, and the reinforcement ring 3 is in direct contact with the ductile iron pipe. The anti-skid pad 13 has the following two functions: first, in the process of moving the installation pipe 16 to the fixed pipe 17 for installation, the reinforcement ring 3 and the surface of the ductile iron pipe are prone to slip, which affects the installation efficiency of the ductile iron pipe. Compared with the reinforcement ring 3, the anti-skid pad 13 and the ductile iron pipe have greater friction under the same pressure, and are not prone to slip, which is conducive to ensuring the smooth progress of the installation process; second, the reinforcement ring 3 and the ductile iron pipe are in rigid contact. During the construction process, the support ring 1 is required to clamp the ductile iron pipe, which is easy to damage the surface of the ductile iron pipe and reduce the quality of the ductile iron pipe. The anti-skid pad 13 has a certain elasticity and can produce a certain deformation without damaging the ductile iron pipe.
[0022] Preferably, anti-skid protrusions 14 are provided on the inner surface of the anti-skid pad 13 , and the anti-skid performance of the anti-skid pad 13 is improved by the anti-skid protrusions 14 .
[0023] Several reinforcing ribs 15 are evenly distributed along the circumference between the half ring 2 and the reinforcing ring 3. During the installation of the ductile iron pipe, each pipeline will be connected to several sockets, and the utility model will be constantly disassembled and repeatedly used. In practice, it is found that with the extension of the use time, the half ring 2 will produce a certain deformation, especially near the position where the cylinder 11 is installed, the deformation is more serious. Therefore, in order to extend the service life of the half ring 2, several reinforcing ribs 15 are set between the half ring 2 and the reinforcing ring 3 to strengthen the rigidity and strength of the entire support ring 1 and reduce deformation.
[0024] The number of cylinders 11 is 2 to 4, which are evenly distributed along the circumference of the support ring 1. The cylinders 11 are used to provide power, tighten the distance between the two support rings 1, and then pull the socket of the mounting tube 16 into the socket of the fixed tube 17 to complete the docking installation of the ductile iron pipe socket. It is found in actual use that during the docking process, if the number of cylinders 11 is only one, or the distribution is uneven, it will cause uneven force on the mounting tube 16, which is likely to cause the mounting tube 16 to be skewed, making the mounting tube 16 and the fixed tube 17 not coaxial. On the one hand, it will generate greater resistance, hindering the continued extension of the socket of the mounting tube 16 into the socket of the fixed tube 17, and even causing the problem of getting stuck. On the other hand, due to the coaxiality between the mounting tube 16 and the fixed tube 17, it is likely to cause damage to the rubber ring in the fixed tube 17, affecting the sealing effect of the pipeline. In order to avoid the above problems, multiple cylinders 11 are arranged evenly distributed around the circumference. Multiple cylinders 11 apply tension at the same time, which can average the force on the installation pipe 16, so that the installation pipe 16 moves horizontally without being skewed, and can provide sufficient power to stably insert the installation pipe 16 into the fixed pipe 17. The specific number of cylinders 11 can be selected and determined according to parameters such as the diameter and weight of the ductile iron pipe. Generally speaking, 2 to 4 cylinders 11 can be set.
[0025] The pull plate 12 and the piston rod of the cylinder 11 are usually fixedly connected by welding, which makes disassembly and assembly inconvenient. In order to facilitate the installation and disassembly of the pull plate 12, the end of the piston rod of the cylinder 11 is connected to the pull plate 12 by a thread. It is only necessary to process a thread of one end length at the end of the piston rod of the cylinder 11, and then process a corresponding threaded hole on the pull plate 12. During installation, it is only necessary to screw the pull plate 12 into the thread on the piston rod. In the actual installation process, other forms of structures can also be used for connection, which can be both firmly connected and easy to disassemble and assemble.
Claims
1. An auxiliary device for socket-and-spigot installation of ductile iron pipes, comprising two support rings (1) of identical structure and arranged concentrically, characterized in that Each support ring (1) is formed by two symmetrically arranged half rings (2), and a reinforcing ring (3) is arranged on the inner side of each half ring (2). One end of the two half rings (2) of the same support ring (1) is rotatably connected via a rotating shaft (4), and the ends of the two half rings (2) at the other end are provided with ear plates (5), one of the ear plates (5) is processed with an open groove, and a jack (6) is installed on one side of the open groove. A push plate (7) is arranged on the top of the push rod of the jack (6), and the push plate (7) is arranged at the opening. A bolt (8) is hingedly connected to another ear plate (5) corresponding to the groove position. A plurality of guide rods (9) are evenly distributed on the circumference between the half rings (2) of the two support rings (1). Limiting plates (10) are arranged after the two ends of the guide rods (9) extend out of the half rings (2). The guide rods (9) are freely slidably connected to the half rings (2). A cylinder (11) is installed on one of the support rings (1). A pull plate (12) is arranged after the end of the piston rod of the cylinder (11) extends out of the outside of the other support ring (1).
2. The auxiliary device for socket and spigot installation of ductile iron pipe according to claim 1, characterized in that An anti-slip pad (13) is provided on the inner surface of the reinforcement ring (3).
3. The auxiliary device for socket and spigot installation of ductile iron pipe according to claim 2, characterized in that Anti-slip protrusions (14) are provided on the inner surface of the anti-slip pad (13).
4. The auxiliary device for socket and spigot installation of ductile iron pipe according to claim 1, characterized in that A plurality of reinforcing ribs (15) are evenly distributed along the circumference between the semi-ring (2) and the reinforcing ring (3).
5. The auxiliary device for socket and spigot installation of ductile iron pipe according to claim 1, characterized in that The number of the cylinders (11) is 2 to 4 and they are evenly distributed along the circumference of the support ring (1).
6. The auxiliary device for socket and spigot installation of ductile iron pipe according to claim 1, characterized in that The piston rod end of the cylinder (11) is connected to the pull plate (12) via a threaded connection.