Anti-drop connecting interface for dragging pipes
Through the design of the spigot and socket, combined with the protrusion, retaining ring and elastic part, the problems of low construction efficiency and high cost of the drag pipe connection interface are solved, and a high-strength, low-cost pipe connection is achieved, which is suitable for construction sites.
Patent Information
- Application Number
- CN202521876734.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-02
- Publication Date
- 2025-10-21
- Estimated Expiration
- 2035-09-02
AI Technical Summary
The existing drag pipe connection interface has a large cross-sectional area, resulting in large forward resistance during construction. Rework is required when the connection fails, resulting in low construction efficiency and high costs, and high technical requirements for equipment and personnel on the construction site.
The design of socket and socket, combined with protrusions, retaining rings, adjusting parts and elastic parts, allows adjacent pipes to deflect. The axial thrust is transmitted through the retaining rings and protrusions to achieve pipe dragging. Simple components and installation methods are used to enhance the connection strength.
It reduces the probability of interface disengagement during construction, improves construction efficiency and flexibility, reduces construction costs, has low technical requirements for equipment and personnel, and is suitable for construction sites.
Smart Images
Figure CN223460086U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to pipe material technical field, specifically is a kind of anti-disengagement connecting interface of pipe material. BACKGROUND
[0002] Towed pipe technology is a kind of trenchless underground pipeline laying method, trenchless refers to the case of extremely small part of ground excavation (generally refers to the small area excavation of inlet and outlet), laying, replacing and repairing various underground pipelines new construction technology. When towed pipe construction, adjacent two pipes need to be connected, the connecting interface of adjacent two pipes forms anti-disengagement connecting interface, so that pipe material is sequentially towed into installation channel. However, the cross-sectional area of some connecting interfaces is larger, which increases the advancing resistance of pipe material in the construction process. If the anti-disengagement connecting interface fails during towing, the adjacent pipe materials are disconnected, the pipe material that has been towed into the hole needs to be pulled out again, connected and then started from the beginning. This greatly reduces the construction efficiency and increases the construction cost. Moreover, the connection of adjacent pipe materials is carried out and completed on the construction site, and the on-site equipment and the technical level of construction personnel are limited, so it is best to make the connection of adjacent pipe materials simple. SUMMARY
[0003] In view of the above problems existing in the prior art, the utility model aims to provide an anti-disengagement connecting interface for towed pipe material, which can realize the sequential towing of pipe material, allow the deflection between adjacent pipe materials, require simple components and simple installation, has low overall cost, high interface strength, greatly reduces the probability of rework due to interface disconnection in the construction process, has low requirements for installation equipment and personnel technical level, and is suitable for installation on construction site.
[0004] To achieve the above object, the utility model adopts the following technical scheme:
[0005] An anti-disengagement connecting interface for towed pipe material, comprising a spigot and a socket, the spigot is inserted into the socket, the anti-disengagement connecting interface further comprises a protruding piece, a retainer ring and an adjusting piece, the protruding piece is fixedly installed on the outer surface of the spigot, the inner wall of the socket is provided with a first avoiding groove, an adjusting groove and a second avoiding groove in sequence from the socket end face to the direction away from the socket end face, the socket is further provided with an adjusting hole, the first avoiding groove, the adjusting groove and the second avoiding groove are all grooves on the inner wall of the socket, the adjusting hole is a through hole communicating with the adjusting groove, the retainer ring is arranged in the adjusting groove, and the adjusting piece is adjustably arranged in the adjusting hole; by reducing the length of the adjusting piece extending into the adjusting groove, the retainer ring can be retracted into the adjusting groove to not block the protruding piece from entering the second avoiding groove, or by increasing the length of the adjusting piece extending into the adjusting groove, the part of the retainer ring extending out of the adjusting groove can contact the protruding piece and transmit the thrust, the thrust is axial thrust, and the sequential towing of adjacent pipe materials is realized.
[0006] As a further improvement of the above technical solution:
[0007] The retreat ring comprises at least two arc-shaped unit elements, and the unit elements of the retreat ring can be sequentially spliced into a circular ring structure, and the inner diameter of the circular ring structure is smaller than the outer diameter of the protruding piece.
[0008] The anti-disengagement connecting interface further comprises an adjusting ring, the adjusting ring is a rigid component in a ring shape, the adjusting ring comprises at least two arc-shaped unit elements, and the unit elements of the adjusting ring can be sequentially spliced into a circular ring structure; the adjusting ring is sleeved outside the retreat ring, and the end of the adjusting member extending into the adjusting groove can contact the side of the adjusting ring away from the retreat ring.
[0009] The anti-disengagement connecting interface further comprises an elastic member with elasticity, and the elastic member is located between the adjusting ring and the retreat ring.
[0010] The width of the protruding piece is smaller than the width of the second avoiding groove, the width of the protruding piece refers to the axial dimension of the protruding piece, the second avoiding groove is a groove along the inner wall of the socket in a circumferential direction, and the width of the second avoiding groove refers to the dimension of the second avoiding groove in parallel to the axial direction of the socket.
[0011] The inner wall of the socket is further provided with a blocking portion, the first avoiding groove, the adjusting groove, the second avoiding groove and the blocking portion are sequentially arranged, the inner diameter of the socket at the adjusting groove, the outer diameter of the circular ring structure formed by splicing the unit elements of the retreat ring, and the inner diameter of the socket at the first avoiding groove are sequentially reduced, the inner diameter of the socket at the first avoiding groove is not smaller than the inner diameter of the socket at the second avoiding groove, and the inner diameter of the socket at the second avoiding groove, the outer diameter of the protruding piece, the inner diameter of the socket at the blocking portion and the outer diameter of the spigot are sequentially reduced.
[0012] The adjusting hole is a bolt hole, and the adjusting member is a bolt.
[0013] The anti-disengagement connecting interface further comprises a sealing ring for realizing sealing, and the sealing ring is compressed between the spigot and the socket.
[0014] The anti-disengagement connecting interface has the advantages that:
[0015] (1) The retreat ring and the protruding piece can contact and transmit force, realize the sequential dragging of the pipe, the protruding piece is welded on the spigot, the retreat ring is radially clamped between the adjusting ring and the spigot and is axially limited in the adjusting groove, so that the anti-disengagement connecting interface is stable and has high strength as a whole, and the axial and radial spaces of the socket are fully utilized, the retreat ring, the protruding piece and the adjusting ring are installed in the socket, and the forward resistance of the pipe is not increased.
[0016] (2) The retreat ring comprises at least two arc-shaped single elements, the retreat ring can be pushed open and returned to the adjusting groove during the insertion of the spigot into the socket, the retreat ring is pushed out by rotating the adjusting element after the spigot and the protruding element are in place, the anchoring of the spigot and the socket is realized, and these designs make the connection and installation of the anti-disengagement connecting interface simpler.
[0017] (3) There is a gap between the inner wall of the socket at the first avoiding groove and the spigot, there is a gap between the protruding element and the inner wall of the socket at the second avoiding groove, and the elastic element has a certain elasticity, and the comprehensive effect of these designs allows the deflection between adjacent pipes, so that the pipes can be deflected under external force factors during the construction process and the use process, and the flexibility and applicability of the pipes are improved.
[0018] (4) The anti-disengagement connecting interface needs simple components, simple installation, low overall cost, high interface strength, greatly reduces the probability of rework caused by disengagement of the interface during the construction process, has low requirements on the installation equipment and the technical level of personnel, and is suitable for installation on the construction site. BRIEF DESCRIPTION OF DRAWINGS
[0019] Figure 1 is a pipe structure schematic diagram of an embodiment of the utility model.
[0020] Figure 2 is a schematic diagram of an anti-disengagement connecting interface of an embodiment of the utility model.
[0021] Figure 3 is a state schematic diagram of the anti-disengagement connecting interface of an embodiment of the utility model during the insertion of the spigot into the socket.
[0022] The drawings show that: 1, the spigot, 2, the socket, 21, the first avoiding groove, 22, the adjusting groove, 23, the second avoiding groove, 24, the blocking part, 25, the sealing groove, 26, the adjusting hole, 3, the pipe body, 4, the protruding element, 5, the retreat ring, 6, the adjusting ring, 7, the elastic element, 8, the adjusting element, 9, the sealing ring. DETAILED DESCRIPTION
[0023] The specific embodiments of the utility model are described in detail 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.
[0024] For purposes of the description hereinafter, spatially relative terms, such as "above", "below", "up", "down", "top", "bottom", "lateral", "longitudinal" (or lengthwise), "vertical", "horizontal", and the like, can be used herein for ease of description to describe one element or feature's relationship to another element(s) or feature(s) as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientations depicted in the figures. For example, if a device described herein is inverted or rotated by 90 degrees, elements described as "above", "below", "up", or "down" relative to other elements or features can then be oriented "down", "above", "down", or "up" relative to the other
[0025] A connection interface for preventing a pipe from being pulled out, as shown in the drawings, the pipe comprises a socket 1, a pipe body 3 and a spigot 2 connected in sequence coaxially, the inner diameter and the outer diameter of the socket 1 are the same as the inner diameter and the outer diameter of the pipe body 3 respectively, and a protruding piece 4 is fixedly installed outside the socket 1. Figure 1
[0026] In this embodiment, the protruding piece 4 is of annular structure made of metal, and is fixedly sleeved on the outer surface of the socket 1, i.e. the inner diameter of the protruding piece 4 is equal to the outer diameter of the socket 1.
[0027] In this embodiment, the protruding piece 4 is welded on the socket 1.
[0028] As to the spigot 2, the inner wall of the spigot 2 of the same pipe is provided with a first avoiding groove 21, an adjusting groove 22, a second avoiding groove 23, a blocking part 24 and a sealing groove 25 in sequence from the end face of the spigot 2 towards the pipe body 3. The end face of the spigot 2 refers to the end face of the end of the spigot 2 away from the pipe body 3, or the end face of the opening end. The first avoiding groove 21, the adjusting groove 22, the second avoiding groove 23 and the sealing groove 25 are all equivalent to grooves provided on the inner wall of the spigot 2, i.e. are formed by concave from the inner wall of the spigot 2, each groove is a groove along a circle of the inner wall of the spigot 2, and the blocking part 24 is equivalent to a part without concave, i.e. is the original inner wall of the spigot 2. Therefore, the inner diameter of the spigot 2 at the first avoiding groove 21, the inner diameter of the spigot 2 at the adjusting groove 22, the inner diameter of the spigot 2 at the second avoiding groove 23 and the inner diameter of the spigot 2 at the sealing groove 25 are all greater than the inner diameter of the spigot 2 at the blocking part 24.
[0029] In this embodiment, the inner diameter of the spigot 2 at the adjusting groove 22 is greater than the inner diameter of the spigot 2 at the first avoiding groove 21 and the inner diameter of the spigot 2 at the second avoiding groove 23, and the inner diameter of the spigot 2 at the first avoiding groove 21 is not less than the inner diameter of the spigot 2 at the second avoiding groove 23.
[0030] The socket 2 is further provided with adjusting holes 26, which are radial through holes communicating with the adjusting grooves 22. That is, one end of each adjusting hole 26 communicates with the adjusting groove 22, and the other end is open on the outer surface of the socket 2. The adjusting holes 26 are bolt holes, that is, the inner wall of each adjusting hole 26 is provided with internal threads. There are at least two adjusting holes 26, which are arranged at intervals along the circumference of the socket 2.
[0031] The pipe can be a socket pipe or a straight pipe or other special-shaped pipe.
[0032] In this embodiment, the pipe is a socket pipe.
[0033] 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 other auxiliary components, the anti-disengagement connection interface is formed.
[0034] The anti-disengagement connection interface, as shown in Figure 2 The spigot 1 is inserted into the socket 2, and the spigot 1 and the socket 2 of the anti-disengagement connection interface are respectively the spigot 1 and the socket 2 of two adjacent pipes. The protruding piece 4 on the spigot 1 enters the socket 2 and the second avoiding groove 23.
[0035] The first avoiding groove 21 and the second avoiding groove 23 are used for avoiding the protruding piece 4, so that after the spigot 1 is inserted into the socket 2, the protruding piece 4 can enter the second avoiding groove 23. The outer diameter of the protruding piece 4 is smaller than the inner diameter of the socket 2 at the second avoiding groove 23 and larger than the inner diameter of the socket 2 at the blocking portion 24. The outer diameter of the spigot 1 is smaller than the inner diameter of the socket 2 at the blocking portion 24.
[0036] The adjusting groove 22 is used for installing the stop ring 5, the adjusting ring 6 and the elastic piece 7.
[0037] The stop ring 5 includes at least two arc-shaped single components, and the single components of the stop ring 5 can be sequentially spliced into a circular ring structure. The inner diameter of the circular ring structure is smaller than the outer diameter of the protruding piece 4, and the inner diameter of the circular ring structure can be smaller than, equal to or larger than the outer diameter of the spigot 1. The outer diameter of the circular ring structure is larger than the inner diameter of the socket 2 at the first avoiding groove 21 and the inner diameter of the socket 2 at the second avoiding groove 23, and smaller than the inner diameter of the socket 2 at the adjusting groove 22.
[0038] In this embodiment, the inner diameter of the circular ring structure spliced by the single components of the stop ring 5 is equal to the outer diameter of the spigot 1.
[0039] The width of the stop ring 5 is not greater than the width of the adjusting groove 22, the width of the convex piece 4 is less than the width of the second avoiding groove 23, the width of the stop ring 5 refers to the axial dimension of the stop ring 5, the width of the convex piece 4 refers to the axial dimension of the convex piece 4, the width of the adjusting groove 22 refers to the dimension of the adjusting groove 22 in the axial direction of the socket 2, and the width of the second avoiding groove 23 refers to the dimension of the second avoiding groove 23 in the axial direction of the socket 2.
[0040] The adjusting ring 6 is a rigid ring-shaped component, and the structure of the adjusting ring 6 is similar to that of the stop ring 5, and the adjusting ring 6 also comprises at least two arc-shaped single elements, and the single elements of the adjusting ring 6 are sequentially spliced into a circular ring-shaped structure.
[0041] The elastic piece 7 is a ring-shaped structure with elasticity, and in the embodiment, the elastic piece 7 is a rubber ring.
[0042] The stop ring 5, the adjusting ring 6 and the elastic piece 7 are all installed in the adjusting groove 22, and the stop ring 5, the elastic piece 7 and the adjusting ring 6 are sequentially sleeved and contacted from inside to outside, that is, the elastic piece 7 is sleeved outside the stop ring 5, and the adjusting ring 6 is sleeved outside the elastic piece 7. The inner diameter of the circular ring-shaped structure sequentially spliced by the single elements of the adjusting ring 6 is less than or equal to the outer diameter of the elastic piece 7.
[0043] The adjusting piece 8 is provided with at least two, and in the embodiment, the adjusting piece 8 is a bolt. Each adjusting piece 8 is arranged in each adjusting hole 26, and specifically, the adjusting piece 8 is screwed in the adjusting hole 26, one end of the adjusting piece 8 can extend into the adjusting groove 22, and the length of the adjusting piece 8 extending into the adjusting groove 22 can be adjusted and controlled by rotating the adjusting piece 8.
[0044] The end of the adjusting piece 8 extending into the adjusting groove 22 can contact the side of the adjusting ring 6 away from the elastic piece 7. When the length of the adjusting piece 8 extending into the adjusting groove 22 is increased by rotating the adjusting piece 8, that is, when the adjusting piece 8 moves towards the adjusting groove 22, the adjusting piece 8 contacts and pushes the adjusting ring 6, the adjusting ring 6 pushes and compresses the elastic piece 7, the elastic piece 7 pushes the stop ring 5, so that the stop ring 5 partially extends out of the adjusting groove 22 and partially remains in the adjusting groove 22, and at the same time, the stop ring 5 is pressed on the outer surface of the socket 1.
[0045] When the length of the adjusting piece 8 extending into the adjusting groove 22 is short or the adjusting piece 8 does not extend into the adjusting groove 22, the stop ring 5 can retreat into the adjusting groove 22. When the stop ring 5 retreats towards the adjusting groove 22, the convex piece 4 can smoothly enter the second avoiding groove 23 without being blocked and interfered by the stop ring 5.
[0046] After the adjusting piece 8 is loosened, the adjusting piece 8 can be self-locked at the current position.
[0047] When the retaining ring 5 partially extends out of the adjustment groove 22, the retaining ring 5 can contact the socket 1 and the protrusion 4. Specifically, the inner wall of the retaining ring 5 contacts the outer surface of the socket 1. One end surface of the retaining ring 5 contacts the protrusion 4 and can transmit thrust. This thrust is axial thrust, which realizes the sequential dragging of adjacent pipes. At this time, the retaining ring 5 is equivalent to being sandwiched between the elastic member 7 and the socket 1.
[0048] The sealing groove 25 is used to install the sealing ring 9 to achieve sealing after the two adjacent pipes are connected. The sealing ring 9 is pressed tightly between the socket 1 and the socket 2.
[0049] Based on the above structure, when connecting adjacent pipes, first install the sealing ring 9 in the sealing groove 25 of the first pipe, and then install the adjusting ring 6, elastic member 7 and anti-retraction ring 5 in the adjusting groove 22 of the first pipe in sequence. Then, the socket 1 of the second pipe is inserted into the socket 2. During the insertion of the socket 1 into the socket 2, the protruding member 4 contacts and pushes open the individual components of the anti-retraction ring 5, causing the individual components of the anti-retraction ring 5 to retreat into the adjusting groove 22, which is equivalent to the anti-retraction ring 5 expanding. The anti-retraction ring 5 simultaneously squeezes and pushes the elastic member 7, and the elastic member 7 pushes the adjusting ring 6 back. Figure 3 As shown, in this embodiment, the adjusting member 8 does not extend into the adjusting groove 22 , and when the protruding member 4 passes through and lifts the stop ring 5 , the adjusting ring 6 contacts the bottom of the adjusting groove 22 .
[0050] When the protruding member 4 passes through the stop ring 5 and enters the second avoidance groove 23, the adjusting member 8 is installed and rotated so that one end of the adjusting member 8 extends into the adjusting groove 22 to contact and push the adjusting ring 6. The adjusting ring 6 pushes the individual components of the stop ring 5 through the elastic member 7 until the stop ring 5 partially extends out of the adjusting groove 22. The inner wall of the stop ring 5 contacts the outer surface of the socket 1, and the stop ring 5 is clamped between the adjusting ring 6 and the socket 1. Figure 2 shown.
[0051] In order to facilitate the protrusion 4 to push open the backstop ring 5 during the insertion of the socket 1 into the socket 2, the end face of the backstop ring 5 facing the opening of the socket 2 is set to be a wedge or a slope. When the protrusion 4 contacts the slope and continues to move forward, the backstop ring 5 will move toward the adjustment groove 22.
[0052] The end face of the retaining ring 5 away from the opening of the socket 2 is set to be parallel to the radial plane, which can contact the protrusion 4 and transmit thrust between the protrusion 4, which is axial thrust, to achieve sequential dragging of the pipe.
[0053] When the spigot 1 and the socket 2 are coaxial, there is a gap between the inner wall of the socket 2 at the first avoiding groove 21 and the spigot 1, there is a gap between the convex piece 4 and the inner wall of the socket 2 at the second avoiding groove 23, and the elastic piece 7 has a certain elasticity, which allows the adjacent two pipes to have a certain degree of relative deflection, so that the anti-disengagement connecting interface can adapt to the relative deflection of the adjacent two pipes caused by external force factors in the pipe construction process or use process.
[0054] Finally, it is necessary to point out here that the above examples are only used to further detail the technical solutions of the present application and cannot be understood as limiting the protection scope of the present application. Some non-essential improvements and adjustments made by those skilled in the art based on the above content of the present application all belong to the protection scope of the present application.
Claims
1. A non-releasing connection interface for pulling a pipe, comprising a socket (1) and a spigot (2), the socket (1) being inserted into the spigot (2), characterized in that, The anti-disengagement connecting interface further comprises a protruding piece (4), a retreat-stop ring (5) and an adjusting piece (8), the protruding piece (4) is fixedly installed on the outer surface of the socket (1), the inner wall of the socket (2) is provided with a first avoiding groove (21), an adjusting groove (22) and a second avoiding groove (23) in sequence from the end surface of the socket (2) towards the direction away from the end surface of the socket (2), the socket (2) is further provided with an adjusting hole (26), the first avoiding groove (21), the adjusting groove (22) and the second avoiding groove (23) are all grooves on the inner wall of the socket (2), the adjusting hole (26) is a through hole communicating with the adjusting groove (22), the retreat-stop ring (5) is arranged in the adjusting groove (22), the adjusting piece (8) is adjustably arranged in the adjusting hole (26), by reducing the length of the adjusting piece (8) extending into the adjusting groove (22), the retreat-stop ring (5) can retreat into the adjusting groove (22) to not block the protruding piece (4) from entering the second avoiding groove (23), or by increasing the length of the adjusting piece (8) extending into the adjusting groove (22), the part of the adjusting piece (8) pushing the retreat-stop ring (5) extends out of the adjusting groove (22), the part of the retreat-stop ring (5) extending out of the adjusting groove (22) can contact with the protruding piece (4) and transmit a pushing force, the pushing force is an axial pushing force, and the adjacent pipes are sequentially pulled.
2. The anti-dec coupling interface of claim 1, wherein: The retreat-stop ring (5) comprises at least two arc-shaped single pieces, each single piece of the retreat-stop ring (5) can be sequentially spliced into a circular ring structure, and the inner diameter of the circular ring structure spliced is smaller than the outer diameter of the protruding piece (4).
3. The anti-disconnect connection interface of claim 2, wherein: The anti-disengagement connecting interface further comprises an adjusting ring (6), the adjusting ring (6) is a rigid annular component, the adjusting ring (6) comprises at least two arc-shaped single pieces, each single piece of the adjusting ring (6) can be sequentially spliced into a circular ring structure, the adjusting ring (6) is sleeved outside the retreat-stop ring (5), and the end of the adjusting piece (8) extending into the adjusting groove (22) can contact the side of the adjusting ring (6) away from the retreat-stop ring (5).
4. The anti-dec coupling interface of claim 3, wherein: The anti-disengagement connecting interface further comprises an elastic piece (7) with elasticity, and the elastic piece (7) is located between the adjusting ring (6) and the retreat-stop ring (5).
5. The anti-dec coupling interface of claim 4, wherein: The width of the protruding piece (4) is smaller than the width of the second avoiding groove (23), the width of the protruding piece (4) refers to the axial dimension of the protruding piece (4), the second avoiding groove (23) is a groove along the circumference of the inner wall of the socket (2), and the width of the second avoiding groove (23) refers to the dimension of the second avoiding groove (23) in parallel to the axial direction of the socket (2).
6. The anti-disconnect connection interface of any one of claims 1-5, wherein: The inner wall of the socket (2) is further provided with a blocking part (24), the first avoiding groove (21), the adjusting groove (22), the second avoiding groove (23) and the blocking part (24) are arranged in sequence, the inner diameter of the socket (2) at the adjusting groove (22), the outer diameter of the circular ring structure formed by splicing each single piece of the retreat-stop ring (5), and the inner diameter of the socket (2) at the first avoiding groove (21) are sequentially reduced, the inner diameter of the socket (2) at the first avoiding groove (21) is not smaller than the inner diameter of the socket (2) at the second avoiding groove (23), and the inner diameter of the socket (2) at the second avoiding groove (23), the outer diameter of the protruding piece (4), the inner diameter of the socket (2) at the blocking part (24) and the outer diameter of the socket (1) are sequentially reduced.
7. The anti-disconnection connection interface according to any one of claims 1 to 5, characterized in that: The adjusting hole (26) is a bolt hole, and the adjusting member (8) is a bolt.
8. The anti-disconnect connection interface of any one of claims 1-5, wherein: The anti-disengagement connecting interface further comprises a sealing ring (9) for realizing sealing, and the sealing ring (9) is compressed between the spigot (1) and the socket (2).