Self-anchoring connector of jacking and dragging dual-purpose geological sedimentation resisting pipe

Abstract

The utility model discloses a jacking and dragging dual-purpose anti-geological settlement pipe self-anchoring interface, which comprises a spigot, a pipe body, a bellmouth, a retaining ring, an elastic piece, a flange, a protruding piece and a pushing baffle ring, the pushing baffle ring, the retaining ring and the protruding piece are sequentially arranged on the outer surface of the pipe body in the direction from the pipe body to the spigot, and the protruding piece and the pushing baffle ring are fixed on the pipe body at an interval. The pipe body is movably sleeved with the retaining ring, the inserting opening, the retaining ring and the protruding piece are located in the bellmouth, the elastic piece is sleeved between the retaining ring and the inner wall of the bellmouth, the flange is fixedly connected to the end face of the bellmouth, and the flange exceeds the inner wall of the bellmouth in the radial direction to make contact with the retaining ring so that axial thrust can be transmitted. The pipe can enter the installation hole in a pushing mode and a dragging mode, two adjacent pipes are allowed to be close to or away from each other within a certain range and cannot be separated from each other, and the pipe is suitable for installation environments such as geological sedimentation or soft soil. Required parts are simple, installation is easy, the overall cost is low, and the connector strength is high.

Description

TECHNICAL FIELD

[0001] The utility model belongs to pipe material technical field, concretely is a top tow dual -purpose anti -geological subsidence pipe material's self -anchoring interface. BACKGROUND

[0002] Non - excavation refers to the situation of a small part of surface excavation ( generally refers to the entrance and exit small area excavation), and the construction of new technology of laying, replacing and repairing various underground pipelines. When laying pipe material in non - excavation engineering, pipe jacking and drag pipe are two commonly used technologies, pipe jacking is through hydraulic jack and other jacking equipment, and prefabricated pipe is gradually jacked into the soil layer from the starting working well, and reaches the receiving working well, and finally forms underground pipeline. When drag pipe is constructed, the adjacent two pipes need to be connected, and the connecting interface of the adjacent two pipes forms a self -anchoring structure, so that the pipe material is dragged into the installation hole in sequence. The pipe jacking product generally does not have the self -anchoring function, therefore, in the geological subsidence area, the pipe jacking product may have the risk of disconnection of the adjacent two pipes. And for the drag pipe product, if the self -anchoring structure fails during the dragging process, the adjacent pipe material is disconnected, then the pipe material dragged into the hole needs to be dragged out again, connected and dragged from the beginning. This greatly reduces the construction efficiency and increases the construction cost. In order to improve the strength of the connecting interface, some self -anchoring structures are relatively complex. However, the connection of the adjacent pipe material is carried out and completed on the construction site, and the on - site equipment and the technical level of the construction personnel are limited, so it is best to make the connecting interface of the adjacent pipe material high in strength and simple in connection. CONTENT OF THE UTILITY MODEL

[0003] In view of the above -mentioned problems existing in the prior art, the utility model aims at providing a top tow dual -purpose anti -geological subsidence pipe material's self -anchoring interface, the pipe material can enter the installation hole by pushing and dragging, and the adaptability of the pipe material to different construction environments and occasions is improved. The self -anchoring interface makes the pipe material not disconnected from each other due to geological subsidence and other factors during use. After the adjacent two pipes are connected, the adjacent two pipes are allowed to approach or move away from each other within a certain range, so that the pipe material is suitable for installation environments such as geological subsidence or soft soil. The components required by the self -anchoring interface are simple, simple to install, the overall cost is low, the interface strength is high, the probability of rework due to interface disconnection in the construction process is greatly reduced, the installation equipment and the technical level of personnel are required, and the installation is suitable for the construction site.

[0004] In order to realize the above -mentioned purpose, the technical scheme adopted by the utility model is:

[0005] The utility model provides a top and drag dual-purpose anti-geological subsidence pipe's self-anchoring interface, including spigot, pipe body and socket, spigot coaxial connection is arranged at one end of pipe body, the self-anchoring interface still includes stop ring, elastic element, flange, convex piece, push stop ring, from the direction of spigot towards pipe body, push stop ring, stop ring and convex piece are sequentially arranged on the outer surface of pipe body, and convex piece and push stop ring are fixed on the pipe body with interval, stop ring is movably sleeved on the outside of pipe body, spigot, stop ring and convex piece are located in socket, and push stop ring does not enter into socket, elastic element is sleeved between stop ring and socket inner wall, flange is fixedly connected on the end face of socket, and flange exceeds socket inner wall in radial direction to contact stop ring to can transmit axial thrust.

[0006] As the further improvement of the above technical scheme:

[0007] The outer diameter of the spigot is greater than the outer diameter of the pipe body or equal to the outer diameter of the pipe body, when the outer diameter of the spigot is greater than the outer diameter of the pipe body, the convex piece contacts the stepped surface of the spigot protruding from the pipe body, and the convex piece protrudes from the spigot in the radial direction.

[0008] The inner wall of the socket is sequentially provided with a first avoiding groove, a second avoiding groove and a blocking portion from the end face towards the direction away from the end face of the socket, the convex piece extends into the second avoiding groove, and the stop ring extends into the first avoiding groove.

[0009] The inner diameter of the socket at the first avoiding groove, the outer diameter of the stop ring, the inner diameter of the socket at the second avoiding groove, the outer diameter of the convex piece, the inner diameter of the socket at the blocking portion and the outer diameter of the spigot sequentially decrease.

[0010] The width of the stop ring is not greater than the width of the first avoiding groove, and the width of the convex piece is less than the width of the second avoiding groove, wherein the width of the stop ring refers to the axial dimension of the stop ring, the width of the convex piece refers to the axial dimension of the convex piece, the width of the first avoiding groove refers to the axial dimension of the first avoiding groove, and the width of the second avoiding groove refers to the axial dimension of the second avoiding groove.

[0011] When the spigot and the socket are coaxial, the flange does not contact the pipe body.

[0012] The flange does not protrude from the outer wall of the socket in the radial direction of the socket.

[0013] The self-anchoring interface further comprises a connecting piece, the flange is fixed on the socket through the connecting piece, the connecting piece is inserted into the socket from the end face of the socket after penetrating through the flange, and the connecting piece does not protrude from the end face of the flange away from the socket.

[0014] A fastening hole in the form of a blind hole is arranged on the socket for inserting the connecting piece, and the fastening hole is formed by being recessed from the end face of the socket.

[0015] The self-anchoring interface further comprises a sealing ring for sealing, and the sealing ring is compressed between the spigot and the socket.

[0016] The utility model discloses the beneficial effect is:

[0017] (1) in the trenchless engineering, the pipe material can pass through the two ways of pushing and dragging and enter the installation hole, that is, can be used as the pipe pushing and dragging pipe, one pipe two uses, improves the pipe material's adaptability to different construction environment and occasion.

[0018] (2) the connecting interface of two adjacent pipe materials forms the self-anchoring interface, so that the pipe material can be used as the pipe dragging in the construction, and the self-anchoring interface also does not cause two adjacent pipes to be separated from each other due to geological subsidence and other factors in the use process of the pipe material.

[0019] (3) after the connection of two adjacent pipes, the two adjacent pipes are allowed to approach or move away from each other within a certain range, so that the pipe material is suitable for installation environments such as geological subsidence or soft soil.

[0020] (4) when the outer diameter of the spigot is greater than the outer diameter of the pipe body, the flange, the retainer ring, the protruding piece and the spigot can contact and transmit force in sequence, realize the pipe material is dragged in sequence, the protruding piece is welded on the pipe body, and the spigot is a part of the pipe material, so the strength and reliability of the self-anchoring interface are improved, and the self-anchoring interface is suitable for large-diameter pipe material. The end surface area of the retainer ring is greater than the end surface area of the protruding piece, so that the area where the flange and the retainer ring can contact is larger than the area where the flange and the protruding piece can contact directly. Under the same flange thrust, the retainer ring receives smaller pressure, which helps to improve the use reliability of the self-anchoring interface. In addition, the outer diameter of the protruding piece is smaller than the outer diameter of the retainer ring, which means that the protruding piece contacts only a part of the end surface of the retainer ring close to the central axis, which means that the part of the retainer ring close to the central axis is counterweighted. When the two adjacent pipes are relatively deflected, the protruding piece needs more torque to rotate, so that the retainer ring is more stable and less likely to come out of the set position. Similarly, the protruding piece is counterweighted by the part of the protruding piece protruding from the pipe body, so that the protruding piece is more secure and less likely to be damaged.

[0021] (5) the inner diameter of the retainer ring is not less than the outer diameter of the pipe body and is movably sleeved on the pipe body, can move and / or rotate relative to the pipe body within a certain range, has a certain flexibility, to better adapt to the relative movement of the two adjacent pipes, in addition, the retainer ring is sleeved with the elastic element, and the retainer ring is limited in the first avoiding groove, to ensure the flexibility of the retainer ring while ensuring the overall stability of the retainer ring.

[0022] (6) the flange does not exceed the outer wall of the socket in the radial direction, and will not be subjected to resistance during the construction process; the blind hole of the connecting piece inserted into the socket will not be subjected to resistance during the construction process due to passing through the socket.

[0023] (7) the self-anchoring interface needs components simple, installation is simple, the overall cost is lower, the interface strength is high, greatly reduces the probability of rework due to interface disconnection in the construction process, the installation equipment and personnel technical level requirement is lower, is applicable to the installation of construction site. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 is the pipe structure schematic diagram of the embodiment one of the utility model.

[0025] Figure 2 is the schematic diagram of the self-anchoring interface of the embodiment one of the utility model when the push stop ring contacts the flange.

[0026] Figure 3 is the schematic diagram when the self-anchoring interface of the embodiment one of the utility model is installed.

[0027] Figure 4 is the schematic diagram of the self-anchoring interface of the embodiment one of the utility model after the push stop ring and the flange are separated.

[0028] Figure 5 is the pipe structure schematic diagram of the embodiment two of the utility model.

[0029] Figure 6 is the schematic diagram of the self-anchoring interface of the embodiment two of the utility model when the push stop ring contacts the flange.

[0030] Figure 7 is the schematic diagram when the self-anchoring interface of the embodiment two of the utility model is installed.

[0031] Figure 8 is the schematic diagram of the self-anchoring interface of the embodiment two of the utility model after the push stop ring and the flange are separated.

[0032] Reference signs: 1, socket, 11, socket reinforcing ring, 2, spigot, 21, first avoiding slot, 22, second avoiding slot, 23, blocking part, 24, sealing groove, 25, fastening hole, 26, outer wall protrusion, 3, pipe body, 31, protruding piece, 32, push stop ring, 33, reinforcing rib, 34, concrete sleeve, 4, stop ring, 5, elastic piece, 6, flange, 7, connecting piece, 8, sealing ring. DETAILED DESCRIPTION

[0033] The specific embodiments of the utility model are described in detail below in combination with the drawings.It should be understood that the specific embodiments described herein are only used to illustrate and explain the utility model, and are not used to limit the utility model.

[0034] For purposes of the description hereinafter, spatial relations terms are used, such as "above", "below", "upper", "lower", and the like, relative to the device as shown in the figures. It is to be understood that the spatial terms are intended to encompass different orientations of the device in use or operation, in addition to the orientation depicted in the figures. For example, if the device is inverted consistent with its being upside down as shown in one or more of the figures, parts depicted above other parts in the figures would then be oriented below the parts, and vice versa. Likewise, if devices are rotated 90 degrees or at other orientations, spatial terms used herein are to be interpreted accordingly. The devices can be oriented in other ways (rotated 90 degrees, or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

[0035] Embodiment one:

[0036] A top and drag dual-purpose anti-geological subsidence pipe material self-anchoring joint, as shown in the figure, the pipe material comprises a socket 1, a pipe body 3 and a socket 2 connected coaxially in sequence. Figure 1 The outer diameter of the socket 1 is larger than the outer diameter of the pipe body 3, so that the socket 1 protrudes out of the outer surface of the pipe body 3 to form a stepped structure. The end face of the socket 1 away from the pipe body 3 is the end face of the socket 1, and the end face or side face of the socket 1 connected to the pipe body 3 is a stepped face, that is, the stepped face is formed by the socket 1 protruding out of the surface of the pipe body 3, and the plane where the stepped face is located is parallel to the radial direction of the socket 1.

[0037] The socket 1 is sleeved with a socket reinforcing ring 11 for enhancing the strength of the socket 1. The socket reinforcing ring 11 can be integrally provided with the socket 1, which is equivalent to the socket 1 and the socket reinforcing ring 11 as a whole with two layers of metal materials of the same or different materials, or the socket reinforcing ring 11 can be separately provided. When the socket reinforcing ring 11 is separately provided, the socket reinforcing ring 11 is annular in shape, generally made of stainless steel, and has a certain ductility and rigidity. The initial outer diameter of the socket reinforcing ring 11 is smaller than the inner diameter of the socket 1. When the socket reinforcing ring 11 is installed, the socket reinforcing ring 11 is placed in the socket 1, and then the socket reinforcing ring 11 is expanded in diameter by using an expanding device, so that the diameter of the socket reinforcing ring 11 is expanded until the socket reinforcing ring 11 is tightly pressed against the inner wall of the socket 1. The reason why the socket reinforcing ring 11 can be tightly pressed against the inner wall of the socket 1 is that, during the expansion, the inner wall of the socket 1 will be subjected to radial pressure from the expanding device, and after the pressure is removed (the expansion is completed), the socket 1 and the socket reinforcing ring 11 will have a certain elastic recovery. Since the wall thickness of the socket 1 is large and connected to the pipe body, the elastic recovery is larger than that of the socket reinforcing ring 11, and after the recovery, the socket reinforcing ring 11 is tightly pressed against the inner wall of the socket 1.

[0038]

[0039] ​The inner diameter of the pipe body 3 is equal everywhere, and the outer diameter of the pipe body 3 is equal everywhere. The outer diameter of the pipe socket 2 is greater than the outer diameter of the pipe body 3. The outer surface of the pipe body 3 is provided with a protruding piece 31, a pushing stop ring 32, a reinforcing rib 33, and a concrete sleeve 34.

[0040] The protruding piece 31 and the pushing stop ring 32 are arranged at intervals, and the protruding piece 31 is closer to the spigot 1 than the pushing stop ring 32. The protruding piece 31 contacts the stepped surface of the spigot 1 and protrudes from the outer surface of the spigot 1, which refers to the curved outer wall of the spigot 1.

[0041] In this embodiment, the protruding piece 31 and the pushing stop ring 32 are both annular structures made of metal. The protruding piece 31 and the pushing stop ring 32 are coaxially fixed to the outer surface of the pipe body 3. The inner surface of the protruding piece 31 contacts the outer surface of the pipe body 3, and one end surface of the protruding piece 31 contacts the stepped surface of the spigot 1. The inner diameter of the protruding piece 31, the inner diameter of the pushing stop ring 32, and the outer diameter of the pipe body 3 are equal. The outer diameter of the pushing stop ring 32, the outer diameter of the protruding piece 31, and the outer diameter of the spigot 1 decrease in turn. The width of the pushing stop ring 32 is greater than the width of the protruding piece 31. The width of the pushing stop ring 32 refers to the axial dimension of the pushing stop ring 32, and the width of the protruding piece 31 refers to the axial dimension of the protruding piece 31.

[0042] In this embodiment, the protruding piece 31 and the pushing stop ring 32 are welded to the pipe body 3.

[0043] The concrete sleeve 34 is sleeved on a part of the outer surface of the pipe body 3 and a part of the outer surface of the pipe socket 2. Specifically, the outer wall of the pipe socket 2 is provided with an outer wall protrusion 26 from the end surface of the pipe socket 2 to the middle part of the outer wall. The outer diameter of the outer wall protrusion 26 is greater than the outer diameter of the pipe socket 2 at other positions. The outer diameter of the pushing stop ring 32 is equal to the outer diameter of the pipe socket 2 at the outer wall protrusion 26, so that there is an inner concave space between the outer wall protrusion 26 and the pushing stop ring 32 for arranging the concrete sleeve 34. The concrete sleeve 34 is sleeved between the outer wall protrusion 26 and the pushing stop ring 32, and the outer diameter of the concrete sleeve 34 is equal to the outer diameter of the pushing stop ring 32 or the outer wall protrusion 26. The main material of the concrete sleeve 34 is cement mortar.

[0044] The reinforcing rib 33 is used to improve the installation strength of the pushing stop ring 32. The reinforcing rib 33 is located on the side of the pushing stop ring 32 away from the spigot 1. The reinforcing rib 33 is in a plate-like structure or a frame-like structure, and the reinforcing rib 33 connects the pushing stop ring 32 and the pipe body 3. The reinforcing rib 33 is provided with a plurality of reinforcing ribs 33 arranged at intervals along the circumference of the pipe body 3. The cement mortar can be filled between adjacent reinforcing ribs 33, that is, the reinforcing rib 33 does not affect the arrangement of the concrete sleeve 34.

[0045] For the socket 2, the inner wall of the socket 2 of the same pipe is sequentially provided with a first avoiding groove 21, a second avoiding groove 22, a blocking part 23 and a sealing groove 24 from the end face of the socket 2 towards the pipe body 3. The end face of the socket 2 refers to the end face of the end of the socket 2 away from the pipe body 3, or the end face of the opening end. The first avoiding groove 21, the second avoiding groove 22 and the sealing groove 24 are equivalent to grooves provided on the inner wall of the socket 2, i.e. concave from the inner wall of the socket 2, and each groove is a groove along a circumference of the inner wall of the socket 2, and the blocking part 23 is equivalent to a part without concave, which is the initial inner wall of the socket 2. Therefore, the inner diameter of the socket 2 at the first avoiding groove 21, the inner diameter of the socket 2 at the second avoiding groove 22 and the inner diameter of the socket 2 at the sealing groove 24 are all greater than the inner diameter of the socket 2 at the blocking part 23.

[0046] In the embodiment, the inner diameter of the socket 2 at the first avoiding groove 21, the inner diameter of the socket 2 at the second avoiding groove 22 and the inner diameter of the socket 2 at the blocking part 23 sequentially decrease.

[0047] The pipe can be a socket pipe or a straight pipe or other special-shaped pipe.

[0048] In the embodiment, the pipe is a socket pipe.

[0049] When two adjacent pipes are connected, the spigot 1 of one pipe is inserted into the socket 2 of the other pipe, and in combination with the cooperation of other auxiliary parts, the self-anchoring joint is formed.

[0050] The self-anchoring joint, as shown in Figures 2-4 , comprises a spigot 1, a socket 2, a pipe body 3, a stop ring 4, an elastic part 5, a flange 6, a connecting part 7, a sealing ring 8, a protruding part 31 and a pushing stop ring 32. The spigot 1 is inserted into the socket 2, and the spigot 1 and the socket 2 of the self-anchoring joint are respectively the spigot 1 and the socket 2 of two adjacent pipes.

[0051] The stop ring 4 is movably sleeved on the outer wall of the pipe body 3, and the stop ring 4 can move and rotate relative to the pipe body 3, and the stop ring 4 is located between the pushing stop ring 32 and the protruding part 31.

[0052] The protruding part 31 and the stop ring 4 enter the socket 2 together, the protruding part 31 enters the second avoiding groove 22, the stop ring 4 enters the first avoiding groove 21, and the pushing stop ring 32 cannot be inserted into the socket 2. The first avoiding groove 21 is used for avoiding the stop ring 4, and the second avoiding groove 22 is used for avoiding the protruding part 31, so that after the spigot 1 is inserted into the socket 2, the protruding part 31 can enter the second avoiding groove 22 and the stop ring 4 can enter the first avoiding groove 21.

[0053] The inner diameter of the stop ring 4 is not less than the outer diameter of the pipe body 3 and is less than the outer diameter of the protruding part 31. The outer diameter of the stop ring 4 is less than the inner diameter of the socket 2 at the first avoiding groove 21 and is greater than the inner diameter of the socket 2 at the second avoiding groove 22. The outer diameter of the protruding part 31 is less than the inner diameter of the socket 2 at the second avoiding groove 22 and is greater than the inner diameter of the socket 2 at the blocking part 23. The outer diameter of the spigot 1 is less than the inner diameter of the socket 2 at the blocking part 23.

[0054] In the embodiment, the stop ring 4 is formed by connecting at least two arc-shaped single elements.

[0055] The elastic part 5 is an annular structure with elasticity. The elastic part 5 is located in the first avoiding groove 21 and is compressed between the inner wall of the first avoiding groove 21 and the stop ring 4.

[0056] In the embodiment, the elastic part 5 is a rubber ring.

[0057] The flange 6 is fixedly connected to the end face of the socket 2. The flange 6 extends radially beyond the inner wall of the end face of the socket 2 to the end face of the flange 6 which can contact the end of the stop ring 4 away from the protruding part 31. In other words, the stop ring 4 is limited in the first avoiding groove 21 between the flange 6 and the second avoiding groove 22. In the embodiment, the flange 6 is a circular ring. In other words, the inner diameter of the annular structure where the flange 6 is located is less than the outer diameter of the stop ring 4.

[0058] According to the above, the flange 6 blocks the stop ring 4 and the protruding part 31, preventing the stop ring 4 and the protruding part 31 from coming out of the socket 2. The protruding part 31 is welded to the spigot 1. Therefore, the spigot 1 is locked in the socket 2, realizing the anchoring of the spigot 1 and the socket 2.

[0059] The flange 6 is fixed to the socket 2 by the connecting part 7. The connecting part 7 is inserted into the socket 2 from the end face of the socket 2 after passing through the flange 6. The connecting part 7 is provided in plurality and is arranged on the same circular ring at intervals. Correspondingly, the socket 2 is provided with fastening holes 25 which are blind holes for the insertion of the connecting part 7. The fastening holes 25 are formed by being concave from the end face of the socket 2. After the connecting part 7 passes through the flange 6 and is inserted into the fastening hole 25, the connecting part 7 does not exceed the end face of the flange 6 away from the socket 2.

[0060] In the embodiment, the flange 6 is formed by connecting at least two fan-shaped single elements.

[0061] In the embodiment, the connecting part 7 is a bolt. The flange 6 is provided with a counterbore for accommodating the bolt head of the connecting part 7, so that the bolt head of the connecting part 7 does not exceed the flange 6.

[0062] Furthermore, the width of the retaining ring 4 is not greater than the width of the first avoidance groove 21, and the width of the protrusion 31 is smaller than the width of the second avoidance groove 22. The width of the retaining ring 4 refers to the axial dimension of the retaining ring 4, the width of the protrusion 31 refers to the axial dimension of the protrusion 31, the width of the first avoidance groove 21 refers to the axial dimension of the first avoidance groove 21 in the socket 2, and the width of the second avoidance groove 22 refers to the axial dimension of the second avoidance groove 22 in the socket 2.

[0063] From the above, it is equivalent to that the protrusion 31 can move within the width of the second avoidance groove 22. In this embodiment, the width of the second avoidance groove 22 is several times the width of the protrusion 31, so that the socket 1 can move axially relative to the socket 2.

[0064] In this embodiment, the axial movement range of the socket 1 relative to the socket 2 and the width of the second avoidance groove 22 are required to be: Figure 4 As shown in FIG, the socket 1 can be moved to the right relative to the socket 2 until the push ring 32 contacts the flange 6, until Figure 2 In the state shown, since the connecting member 7 does not protrude from the surface of the flange 6, the push ring 32 can be attached to the end surface of the flange 6 away from the socket 2, and at this time the protruding member 31 can contact or not contact the step surface of the blocking portion 23 protruding from the second avoidance groove 22. On the contrary, if Figure 2 As shown in FIG, the socket 1 can be moved leftward relative to the socket 2 until the protrusion 31, the stop ring 4, and the flange 6 contact with each other in sequence and can transmit thrust, until Figure 4 In the state shown, the thrust realizes the axial pulling of the two adjacent pipes. At this time, the distance between the push ring 32 and the flange 6 is not less than the length of the connector 7. Figure 3 As shown, the connecting piece 7 can be installed smoothly.

[0065] Furthermore, the flange 6 does not extend beyond the outer wall of the socket 2 in the radial direction. That is, the outer diameter of the ring in which the flange 6 is located is less than or equal to the outer diameter of the end face of the socket 2. In this way, during construction, the flange 6 will not be subject to the forward resistance of the pipe in the hole due to the surrounding soil, etc., thereby minimizing the external force on the flange 6 and improving the reliability of the flange 6.

[0066] When the socket 1 and the socket 2 are coaxial, the flange 6 does not contact the pipe body 3. That is, the inner diameter of the ring where the flange 6 is located is larger than the outer diameter of the pipe body 3.

[0067] The sealing groove 24 is used to install the sealing ring 8 to achieve sealing after the two adjacent pipes are connected. The sealing ring 8 is pressed tightly between the socket 1 and the socket 2.

[0068] Based on the above structure, the working principle and method of connecting adjacent pipes are as follows:

[0069] First, in the first tube ( Figure 2 and 4The sealing ring 8 is installed in the sealing groove 24 of the pipe material where the socket 2 is located, the elastic member 5 is installed in the first avoiding groove 21 of the first pipe, Figure 2 and 4 The stop ring 4 is installed between the push stop ring 32 and the protruding member 31 of the pipe material where the socket 1 is located. The stop ring 4 is composed of at least two arc-shaped single elements. When the stop ring 4 is installed, the arc-shaped single elements are sleeved outside the pipe body 3 between the push stop ring 32 and the protruding member 31, and then the arc-shaped single elements are welded in sequence to form the circular stop ring 4 sleeved outside the pipe body 3.

[0070] Then, the socket 1 of the second pipe is inserted into the socket 2, the protruding member 31 and the stop ring 4 enter the socket 2, and the elastic member 5 is compressed between the stop ring 4 and the inner wall of the first avoiding groove 21.

[0071] Then, the single elements of the flange 6 are attached to the end surface of the socket 2 of the first pipe, the counterbore and the fastening hole 25 on the flange 6 are aligned, the connecting member 7 is inserted into the flange 6 and the push stop ring 32 of the second pipe, and then passes through the flange 6 and is inserted into the fastening hole 25.

[0072] Based on the above pipe material connection method, when the pipe material is used as a pipe jacking, the first pipe is first jacked into the installation hole, then the second pipe and the first pipe are connected according to the above connection method, and then the second pipe is jacked, Figure 4 The second pipe moves to the right until the push stop ring 32 contacts the flange 6, and then the second pipe is continuously jacked, and the second pipe pushes the first pipe to move a certain distance to the right. Then, the third pipe and the second pipe are connected and jacked in the above manner, and the above steps are repeated, and a plurality of pipe materials connected and communicated with each other are jacked into the installation hole in sequence. At this time, the connection interfaces of the adjacent two pipe materials are as shown in Figure 2 Due to the existence of the concrete sleeve 34, the outer diameters of the connected pipe materials are equal everywhere, which greatly reduces the forward resistance of the pipe materials in the installation hole.

[0073] After the pipe jacking construction is completed, if geological subsidence occurs during use or the soil is loose due to soft soil, the adjacent two pipes can move away from each other to adapt to the geological subsidence or soil movement. Specifically, Figure 2 The socket 1 and the socket 2 move away from each other until the protruding member 31, the stop ring 4, and the flange 6 are in contact in sequence. Obviously, the socket 1 and the socket 2 cannot be separated from each other at this time. At this time, the connection interfaces of the adjacent two pipe materials are as shown in Figure 4

[0074] When the pipe material is used as a drag pipe, the adjacent two pipe materials are connected according to the above connection method, and the connection interfaces of the adjacent two pipe materials are as shown in Figure 4 ​The connecting interfaces are shown in FIG. 1. Then, the first pipe is pulled to the right, and the first pipe will pull the second pipe to move to the right, or the second pipe is pulled to the left, and the second pipe will pull the first pipe to move to the left. In this way, a plurality of sequentially connected pipes are pulled into the installation hole, and at this time, the connecting interfaces of the adjacent two pipes are shown in FIG. 2. Figure 4

[0075] After the pipe pulling construction is completed, if geological subsidence occurs during use or the soil is loose due to soft soil, the adjacent two pipes can be close to each other to adapt to the geological subsidence or soil movement, and specifically, Figure 4 The spigot 1 and the socket 2 are close to each other until the jacking ring 32 of the second pipe contacts the flange 6 of the first pipe, and after the movement, the connecting interfaces of the adjacent two pipes are shown in FIG. 4. Figure 2

[0076] Embodiment Two:

[0077] The difference between this embodiment and Embodiment One is that in this embodiment, the outer diameter of the spigot 1 is equal to the outer diameter of the pipe body 3, and the inner diameter of the spigot 1 is equal to the inner diameter of the pipe body 3, as shown in FIG. 5. Figures 5-8

[0078] Compared with Embodiment One, Embodiment One can be used for large-diameter pipes, and Embodiment Two can be used for small-diameter pipes. The scheme of Embodiment Two is obviously lower in cost compared with the scheme of Embodiment One.

[0079] Finally, it is necessary to point out that: the above embodiments are only used to further detail the technical scheme of the utility model, and cannot be understood as a limitation on the protection scope of the utility model. Some non-essential improvements and adjustments made by the person skilled in the art according to the above content of the utility model all belong to the protection scope of the utility model.​​​

Claims

1. A self-anchoring joint for a pipe resistant to geologic subsidence, both top and side, comprising a spigot (1), a pipe body (3) and a socket (2), the spigot (1) being coaxially connected to one end of the pipe body (3), characterized in that, The self-anchoring interface further comprises a retreat-stop ring (4), an elastic member (5), a flange (6), a protruding member (31), and a push-stop ring (32). From the pipe body (3) towards the spigot (1), the push-stop ring (32), the retreat-stop ring (4), and the protruding member (31) are sequentially arranged on the outer surface of the pipe body (3), the protruding member (31) and the push-stop ring (32) are fixed on the pipe body (3) at intervals, the retreat-stop ring (4) is movably sleeved on the pipe body (3), the spigot (1), the retreat-stop ring (4), and the protruding member (31) are located in the socket (2), the push-stop ring (32) does not enter the socket (2), the elastic member (5) is sleeved between the retreat-stop ring (4) and the inner wall of the socket (2), the flange (6) is fixedly connected to the end face of the socket (2), and the flange (6) radially exceeds the inner wall of the socket (2) to contact the retreat-stop ring (4) to transmit axial thrust.

2. The self-anchoring interface of claim 1, wherein: The outer diameter of the spigot (1) is greater than or equal to the outer diameter of the pipe body (3), when the outer diameter of the spigot (1) is greater than the outer diameter of the pipe body (3), the protruding member (31) contacts the stepped surface of the spigot (1) protruding from the pipe body (3), and the protruding member (31) radially exceeds the spigot (1).

3. The self-anchoring interface of claim 1, wherein: The inner wall of the socket (2) is sequentially provided with a first avoiding groove (21), a second avoiding groove (22), and a blocking portion (23) from the end face towards the direction away from the end face of the socket (2), the protruding member (31) extends into the second avoiding groove (22), and the retreat-stop ring (4) extends into the first avoiding groove (21).

4. The self-anchoring interface of claim 3, wherein: The inner diameter of the socket (2) at the first avoiding groove (21), the outer diameter of the retreat-stop ring (4), the inner diameter of the socket (2) at the second avoiding groove (22), the outer diameter of the protruding member (31), the inner diameter of the socket (2) at the blocking portion (23), and the outer diameter of the spigot (1) sequentially decrease.

5. The self-anchoring interface of claim 3, wherein: The width of the retreat-stop ring (4) is not greater than the width of the first avoiding groove (21), and the width of the protruding member (31) is less than the width of the second avoiding groove (22), the width of the retreat-stop ring (4) refers to the axial dimension of the retreat-stop ring (4), the width of the protruding member (31) refers to the axial dimension of the protruding member (31), the width of the first avoiding groove (21) refers to the axial dimension of the first avoiding groove (21) on the socket (2), and the width of the second avoiding groove (22) refers to the axial dimension of the second avoiding groove (22) on the socket (2).

6. The self-anchoring interface of any of claims 1-5, wherein: When the spigot (1) and the socket (2) are coaxial, the flange (6) does not contact the pipe body (3).

7. The self-anchoring interface of any of claims 1-5, wherein: The flange (6) does not radially exceed the outer wall of the socket (2).

8. The self-anchoring interface of any of claims 1-5, wherein: The self-anchoring interface further comprises a connecting member (7), the flange (6) is fixed on the socket (2) through the connecting member (7), the connecting member (7) is inserted into the socket (2) from the end face of the socket (2) after penetrating through the flange (6), and the connecting member (7) does not exceed the end face of the flange (6) away from the socket (2).

9. The self-anchoring interface of claim 8, wherein: The socket (2) is provided with a fastening hole (25) in the form of a blind hole for inserting the connecting member (7), and the fastening hole (25) is formed by being concave from the end face of the socket (2).

10. The self-anchoring interface of any of claims 1-5, wherein: The self-anchoring interface further comprises a sealing ring (8) for sealing, and the sealing ring (8) is compressed between the spigot (1) and the socket (2).

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