A metal socket pipe outer wall protection device

Abstract

The application provides an outer wall protection device for a socket metal pipe, the outer wall protection device is a ring segment with the same center as the socket metal pipe to be protected, a hollow cylinder is formed by more than two ring segments, the socket metal pipe is sleeved in the hollow cylinder, the outer diameter of the hollow cylinder is greater than or equal to the outer diameter of the pushing flange and smaller than the maximum diameter of the socket segment sleeved in the hollow cylinder; the outer wall protection device comprises a first ring segment and a third ring segment; the first ring segment is adjacent to the reinforcing support during installation, and the third ring segment is matched with the socket segment. The application eliminates the longest curing process in the production of nodular cast iron pipes, shortens the pouring link in the preparation process of the nodular cast iron pipes, forms the required structure of the outer wall and the socket metal pipe in stages, and thus improves the production efficiency of the metal pipe.

Description

TECHNICAL FIELD

[0001] The application belongs to the field of socket metal pipe production, and particularly relates to an outer wall protection device for a socket metal pipe. BACKGROUND

[0002] Pipe jacking technology is a trenchless pipe laying construction technology for municipal construction, and has the advantages of little influence on the surrounding environment, small construction site and low noise. The pipe jacking technology has developed to a very mature stage, and various pipe jacking methods have appeared, but the principle of the pipe jacking construction technology is the same, that is, a working well is made vertically to the ground, and then a cement or metal pipe is jacked into the ground by using a high-pressure hydraulic jack and lubricating medium.

[0003] The socket pipe has a socket area larger than the normal outer diameter of the pipe at the socket, so that the socket of the adjacent pipe is sleeved together, and a corresponding sealing element is additionally arranged to achieve the effect of pipe sealing.

[0004] However, in the underground trenchless construction, the peak-valley type external mechanism generated by the cooperation of the socket is not conducive to the advancement of the pipe in the soil and rock medium, so it is necessary to set a structure for protecting and eliminating the peak-valley type outer wall on the outer wall of the socket metal pipe. In the prior art, a barrel-shaped mold is usually used to wrap the socket metal pipe, and after the concrete is injected into the gap, the mold is removed.

[0005] The inventor finds that the prior art has the following disadvantages:

[0006] The pipe jacking forming cycle is long through mold plastic, especially in the large-diameter pipe jacking forming process, the internal metal skeleton material is less, and a long maintenance period is required, and even the concrete must be stored in the warehouse before the final strength is reached. In the transportation process, the external protective material is easy to be damaged. SUMMARY

[0007] The technical problem to be solved by the application is to provide a technical measure to shorten the pouring link in the preparation process of the nodular cast iron pipe, to form the structure required by the outer wall and the socket metal pipe in stages, and to improve the production efficiency of the metal pipe.

[0008] The technical scheme adopted by the application is as follows: an outer wall protection device for a socket metal pipe, the socket metal pipe comprising: a socket segment, a socket segment, a pipe body segment, and a jacking flange extending outward along the pipe diameter and fixed to the outer wall of the pipe body segment near the socket segment.

[0009] The jacking flange is fixed with a reinforcing support on the side away from the socket section, the reinforcing support is fixed at one end of the jacking flange and the other end of the socket section of the socket metal jacking pipe, which is used to improve the fixing strength of the jacking flange, and the jacking flange is matched with the axial outer side end of the socket section of the socket metal jacking pipe adjacent to the jacking construction;

[0010] The outer wall protection device is a ring segment with the same center as the protected socket metal jacking pipe, and the number of the ring segments is greater than or equal to two, which forms a hollow cylinder, the socket metal jacking pipe is sleeved in the hollow cylinder, and the outer diameter of the hollow cylinder is greater than or equal to the outer diameter of the jacking flange and less than the maximum diameter of the socket section sleeved in the hollow cylinder;

[0011] The outer wall protection device comprises a first ring segment and a third ring segment, the first ring segment is adjacent to the reinforcing support during installation, and the third ring segment is matched with the socket section, and the hollow cylinder formed by the first ring segment and the third ring segment covers the protected socket metal jacking pipe;

[0012] The first ring segment and the third ring segment are provided with a connection assembly matched with each other at the circumferential interface of the socket metal jacking pipe, and the first ring segment and the third ring segment are fixed.

[0013] Further, the outer wall protection device further comprises a second ring segment, the second ring segment is located between the first ring segment and the third ring segment, the hollow cylinder formed by the first ring segment, the second ring segment and the third ring segment is sequentially connected to cover the protected socket metal jacking pipe, and the number of the second ring segment is two or more; the second ring segment is provided with a connection assembly matched with each other at the circumferential interface of the socket metal jacking pipe, and the second ring segment is fixed.

[0014] Further, the first ring segment, the second ring segment and the third ring segment are all arranged with a steel mesh inside.

[0015] Further, the inner wall of the first ring segment, the second ring segment and the third ring segment is provided with a weight-reducing hole, and the weight-reducing hole is a groove uniformly arranged or a groove arranged in disorder along the circumference of the hollow cylinder.

[0016] Further, the first ring segment is provided with a support protrusion passing through the gap of the reinforcing support along the axial direction of the socket metal jacking pipe, and the top end of the support protrusion is in contact with the jacking flange.

[0017] Further, the first ring segment, the second ring segment and the third ring segment are further provided with a rubber layer close to the outer wall side of the socket metal jacking pipe.

[0018] Further, the first ring segment, the second ring segment and the third ring segment are provided with anti-skid grooves close to the outer wall of the bell and spigot metal pipe, and the rubber layer is provided with protrusions matched with the anti-skid grooves.

[0019] Further, the connecting assembly is a bolt assembly matched with each other, and each two outer wall protection devices of the hollow cylinder are embedded with a group of and more than one bolt holes and / or bolts at the circumferential interface of the hollow cylinder, and the bolt holes and / or bolts embedded in the outer wall protection devices in contact with each other are opposite to each other and can be connected with each other.

[0020] When the number of ring segments of the outer wall protection device constituting the hollow cylinder is even, the outer wall protection device is only embedded with the bolt holes or the bolts, and when the number of ring segments of the outer wall protection device constituting the hollow cylinder is odd, the ring segments of the outer wall protection device are embedded with bolts at one side of the circumferential side of the bell and spigot metal pipe and embedded with bolt holes at the other side, and the outer wall protection devices embedded with the bolt holes and the bolts are matched with each other to constitute the hollow cylinder.

[0021] Further, the first ring segment, the second ring segment and the third ring segment are provided with anti-skid grooves close to the outer wall of the bell and spigot metal pipe, and the rubber layer is provided with protrusions matched with the anti-skid grooves.

[0022] Further, the interface between adjacent ring segments in the axial direction of the bell and spigot metal pipe is composed of a first interface, a second interface and a third interface, the first interface is close to the outer wall of the bell and spigot metal pipe, the third interface is close to the outer wall of the hollow cylinder composed of ring segments, the second interface is located between the first interface and the third interface and penetrates each other, the first interface and the third interface are respectively located on the planes perpendicular to the axis of the bell and spigot metal pipe and parallel to each other, and the second interface is located on the plane with an acute angle to the axis of the bell and spigot metal pipe.

[0023] The outer wall protection device of the application can exist as an independent production process, does not cross the production process of the ductile cast iron pipe, saves the longest health maintenance process in the production of the ductile cast iron pipe, shortens the pouring link in the preparation process of the ductile cast iron pipe, forms the required structure of the outer wall and the bell and spigot metal pipe in stages, and thus improves the production efficiency of the metal pipe. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 It is a perspective structural schematic diagram of the application;

[0025] Figure 2 It is a front structural schematic diagram of the application;

[0026] Figure 3 It is a perspective structural schematic diagram of the application; Figure 2 A-A sectional view of the application;

[0027] Figure 4 For the invention Figure 2 B-B section view in the invention;

[0028] Figure 5 For the invention Figure 3 I structure in the invention enlarged view;

[0029] Figure 6 For the invention Figure 3 II structure in the invention enlarged view;

[0030] Figure 7 For the invention socket segment and first ring segment structure schematic diagram;

[0031] Figure 8 For the invention ring segment interface structure schematic diagram;

[0032] Figure 9 For the invention ring segment first embodiment structure schematic diagram;

[0033] Figure 10 For the invention ring segment second embodiment structure schematic diagram;

[0034] Figure 11 For the invention ring segment third embodiment structure schematic diagram;

[0035] Wherein, 10 represents the socket segment, 20 represents the socket segment, 30 represents the pipe body segment, 11 represents the pushing flange, 12 represents the reinforcing support, 13 represents the support protrusion, 41 represents the first ring segment, 42 represents the second ring segment, 43 represents the third ring segment, 44 represents the connecting assembly, 45 represents the rubber layer, 46 represents the steel mesh, 50 represents the weight reduction hole, 51 represents the anti-skid groove, 61 represents the bolt hole, 62 represents the bolt, 71 represents the first interface, 72 represents the second interface, 73 represents the third interface. DETAILED DESCRIPTION

[0036] 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 embodiments.

[0037] As Figures 1-11 shown: a socket metal pipe outer wall protection device, socket metal pipe includes: socket segment 10, socket segment 20, pipe body segment 30, pipe body segment 30 close to the socket segment 10 of the outer wall circumferential fixed with the socket metal pipe diameter extending outwardly extending pushing flange 11;

[0038] The reinforcing support 12 is fixed at one end with the jacking flange 11 and at the other end with the outer wall of the socketed metal jacking pipe, for improving the fixing strength of the jacking flange 11. The jacking flange 11 cooperates with the end part of the socketed metal jacking pipe on the outer side in the axial direction during jacking construction.

[0039] The outer wall protection device is a ring segment with the same center as the socketed metal jacking pipe to be protected. The hollow cylinder is formed by two or more ring segments. The socketed metal jacking pipe is sleeved in the hollow cylinder. The outer diameter of the hollow cylinder is greater than or equal to the outer diameter of the jacking flange 11 and less than the maximum diameter of the socketed segment 20 sleeved in the hollow cylinder.

[0040] The outer wall protection device includes a first ring segment 41 and a third ring segment 43. The first ring segment 41 is adjacent to the reinforcing support 12 during installation, and the third ring segment 43 cooperates with the socketed segment 20. The first ring segment 41 and the third ring segment 43 form a hollow cylinder covering the socketed metal jacking pipe to be protected.

[0041] The first ring segment 41 and the third ring segment 43 are provided with a connection assembly 44 at the circumferential interface of the socketed metal jacking pipe, which fixes the first ring segment 41 and the third ring segment 43.

[0042] The outer wall protection device further includes a second ring segment 42. The second ring segment 42 is located between the first ring segment 41 and the third ring segment 43. The first ring segment 41, the second ring segment 42, and the third ring segment 43 form a hollow cylinder sequentially connected to cover the socketed metal jacking pipe to be protected. The number of the second ring segment 42 is two or more. The second ring segment 42 is provided with a connection assembly 44 at the circumferential interface of the socketed metal jacking pipe, which fixes the second ring segment 42.

[0043] The first ring segment 41, the second ring segment 42, and the third ring segment 43 are each provided with a steel mesh 46 inside. The first ring segment 41, the second ring segment 42, and the third ring segment 43 are provided with weight-reducing holes 50 on the inner walls, which are uniformly arranged or randomly arranged grooves along the circumference of the hollow cylinder. The first ring segment 41 is provided with a support protrusion 13 passing through the gap of the reinforcing support 12 in the axial direction of the socketed metal jacking pipe. The top end of the support protrusion 13 is in contact with the jacking flange 11. The first ring segment 41, the second ring segment 42, and the third ring segment 43 are further provided with a rubber layer 45 on the side close to the outer wall of the socketed metal jacking pipe.

[0044] The first ring segment 41, the second ring segment 42, and the third ring segment 43 are provided with anti-skid grooves 51 on the side close to the outer wall of the socketed metal jacking pipe. The rubber layer 45 is provided with protrusions matching the anti-skid grooves 51.

[0045] The connecting assembly 44 is a bolt assembly matched with each other, and a group of bolt holes 61 and / or bolts 62 are embedded in the circumferential interface of the hollow cylinder formed by the outer wall protection devices. The bolt holes 61 and / or bolts 62 embedded in the outer wall protection devices in contact with each other are opposite to each other and can be connected with each other.

[0046] When the number of ring segments of the outer wall protection devices forming the hollow cylinder is even, only the bolt holes 61 or the bolts 62 are embedded in the outer wall protection devices. When the number of ring segments of the outer wall protection devices forming the hollow cylinder is odd, the ring segments in the outer wall protection devices embed the bolts 62 on one side of the circumferential side of the socket metal pipe and embed the bolt holes 61 on the other side. The outer wall protection devices with the embedded bolt holes 61 and the embedded bolts 62 are matched with each other to form the hollow cylinder.

[0047] The connecting mode of the first ring segment 41, the second ring segment 42 and the third ring segment 43 in the axial direction of the protected socket metal pipe is insertion. The interfaces of the adjacent ring segments in the axial direction of the socket metal pipe are composed of the first interface 71, the second interface 72 and the third interface 73. The first interface 71 is close to the outer wall of the socket metal pipe, the third interface 73 is close to the outer wall of the hollow cylinder formed by the ring segments, and the second interface 72 is located between the first interface 71 and the third interface 73 and penetrates each other. The first interface 71 and the third interface 73 are respectively located on the planes perpendicular to the axial line of the socket metal pipe and parallel to each other, and the second interface 72 is located on the plane with an acute angle to the axial line of the socket metal pipe.

[0048] In specific implementation, the rubber layer 45 and the steel mesh 46 in the first ring segment 41, the second ring segment 42 and the third ring segment 43 are made after the concrete pouring and curing. The rubber layer 45 is provided with protrusions matched with the anti-skid grooves 51, so as to be more firm. The ring segments are fixed and wrapped on the outer wall of the protected socket metal pipe through the bolt holes 61 and the bolts 62. The connecting mode of the first ring segment 41, the second ring segment 42 and the third ring segment 43 in the axial direction of the protected socket metal pipe is insertion, and the connection is more stable. According to the length of the protected socket metal pipe, the number of ring segments is selected, which can be composed of the first ring segment 41 and the third ring segment 43, or composed of the first ring segment 41, the third ring segment 43 and one or more second ring segments 42.

[0049] The above is only the preferred specific implementation 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 according to the technical solution and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. An outer wall protection device for a bell and spigot metallic push pipe, the bell and spigot metallic push pipe comprising: The spigot section (10), the socket section (20), the pipe body section (30), the outer wall of the pipe body section (30) near the spigot section (10) is fixed with a jacking flange (11) extending radially outward along the socket metal jacking pipe; The jacking flange (11) is fixed with a reinforcing support (12) on the side away from the spigot section (10) and spaced around the socket metal jacking pipe, one end of the reinforcing support (12) is fixed with the jacking flange (11), the other end is fixed with the outer wall of the socket metal jacking pipe, which is used to improve the fixing strength of the jacking flange (11), and the jacking flange (11) is matched with the outer side end of the socket section (20) of the socket metal jacking pipe adjacent to the jacking construction; The outer wall protection device is a ring segment with the same center as the protected socket metal jacking pipe, and the number of the ring segments is greater than or equal to two, which forms a hollow cylinder, the socket metal jacking pipe is sleeved in the hollow cylinder, and the outer diameter of the hollow cylinder is greater than or equal to the outer diameter of the jacking flange (11) and less than the maximum diameter of the socket section (20) sleeved in the hollow cylinder; The outer wall protection device comprises a first ring segment (41) and a third ring segment (43), the first ring segment (41) is adjacent to the reinforcing support (12) during installation, the third ring segment (43) is matched with the socket section (20), and the hollow cylinder formed by the first ring segment (41) and the third ring segment (43) covers the protected socket metal jacking pipe; The first ring segment (41) and the third ring segment (43) are provided with a connecting assembly (44) at the circumferential interface of the socket metal jacking pipe, which fixes the first ring segment (41) and the third ring segment (43); The outer wall protection device further comprises a second ring segment (42), the second ring segment (42) is located between the first ring segment (41) and the third ring segment (43), the hollow cylinder formed by the first ring segment (41), the second ring segment (42) and the third ring segment (43) sequentially connects and covers the protected socket metal jacking pipe, and the number of the second ring segment (42) is two or more; the second ring segment (42) is provided with a connecting assembly (44) at the circumferential interface of the socket metal jacking pipe, which fixes the second ring segment (42); The first ring segment (41) is provided with a support protrusion (13) passing through the gap of the reinforcing support (12) along the axial direction of the socket metal jacking pipe, and the top end of the support protrusion (13) is in contact with the jacking flange (11). The interface of adjacent ring segments in the axial direction of the socket metal pipe is composed of a first interface (71), a second interface (72) and a third interface (73), the first interface (71) is close to the outer wall of the socket metal pipe, the third interface (73) is close to the outer wall of the hollow cylinder composed of ring segments, the second interface (72) is located between the first interface (71) and the third interface (73) and penetrates each other, the first interface (71) and the third interface (73) are located on the planes perpendicular to the axis of the socket metal pipe and parallel to each other, and the second interface (72) is located on the plane with an acute angle to the axis of the socket metal pipe.

2. The outer wall protection device for a metal push pipe with a socket according to claim 1, characterized in that: The first ring segment (41), the second ring segment (42) and the third ring segment (43) are arranged with a steel mesh (46) inside.

3. The outer wall protection device for a metal push pipe with a socket according to claim 1, characterized in that: The inner wall of the first ring segment (41), the second ring segment (42) and the third ring segment (43) is provided with a weight-reducing hole (50), which is a groove uniformly arranged or a groove arranged in disorder around the hollow cylinder.

4. The outer wall protection device for the metal push pipe with the socket according to any one of claims 1-3, characterized in that: The first ring segment (41), the second ring segment (42) and the third ring segment (43) are further provided with a rubber layer (45) close to the outer wall side of the socket metal pipe.

5. The outer wall protection device for a spigot metal push pipe according to claim 4, characterized in that: The first ring segment (41), the second ring segment (42) and the third ring segment (43) are provided with an anti-skid groove (51) close to the outer wall side of the socket metal pipe, and the rubber layer (45) is provided with a protrusion matched with the anti-skid groove (51).

6. The outer wall protection device for a spigot metal push pipe according to claim 1, characterized in that: The connecting assembly (44) is a bolt assembly matched with each other, a group of and more bolt holes (61) and / or bolts (62) are embedded at the circumferential interface of the hollow cylinder of the outer wall protection device of the two outer walls, and the bolt holes (61) and / or bolts (62) embedded in the outer wall protection devices in contact with each other are opposite to each other and can be connected with each other; When the number of ring segments of the outer wall protection device constituting the hollow cylinder is even, only the bolt hole (61) or the bolt (62) is embedded in the outer wall protection device, when the number of ring segments of the outer wall protection device constituting the hollow cylinder is odd, the ring segment in the outer wall protection device is embedded with a bolt (62) on one side of the socket metal pipe in the circumferential direction and a bolt hole (61) on the other side, and the outer wall protection devices embedded with the bolt hole (61) and the bolt (62) are matched with each other to constitute a hollow cylinder.

7. The outer wall protection device for a spigot metal push pipe according to claim 1, characterized in that: The connection mode of the first ring segment (41), the second ring segment (42) and the third ring segment (43) in the axial direction of the protected socket metal pipe is plug-in.

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