A socket type ring cutter clamp for preventing buckling failure of a trenchless jacking pipe joint

Abstract

The utility model relates to the field of trenchless underground pipe jacking, and particularly relates to a socket type ring cutter shaped clamp for preventing buckling damage of trenchless pipe jacking pipe sections. The utility model discloses a plurality of clamps, a stress base, the plurality of clamps are arranged in a ring around the stress base, the stress base bears the connection and fixed function, each group of clamps comprises an outer ring clamping plate and an inner ring clamping plate, and there is a gap between the outer ring clamping plate and the inner ring clamping plate, the gap between the plurality of clamps forms a hollow cylinder, when the pipe body bears external load, the inner ring clamping plate and the outer ring clamping plate limit the deformation of the pipe body. In the working process of the utility model, two layers of clamping plates cooperate with stress, and pressure from all directions is evenly dispersed, so that damage to the pipe section caused by pressure concentration is avoided, thereby effectively preventing buckling damage of the pipe section.

Description

Technical Field

[0001] This utility model relates to the field of trenchless underground pipe jacking, and in particular to a socket-type ring-shaped clamp for preventing buckling failure of trenchless pipe jacking sections. Background Technology

[0002] With the acceleration of urbanization in my country, the demand for underground pipe networks in water supply and drainage, gas, electricity, and communication projects has increased dramatically. Traditional excavation methods are difficult to meet the needs of efficient construction and can damage urban buildings, causing traffic congestion and other problems. Trenchless underground pipe jacking technology, as a modern underground pipeline construction method, not only effectively solves these problems but also demonstrates excellent performance in stabilizing soil layers and protecting the environment.

[0003] However, during pipe jacking construction, pipe sections often seize up due to complex geological conditions or improper operation. Modern pipe jacking machines are equipped with a hydraulic closed-loop control system, which maintains a stable jacking speed by adjusting the oil pressure in real time. When the jacking force exceeds the buckling limit of the pipe section, it will lead to damage. Currently, the main method is to weld steel plates on-site to enhance the strength of the pipe sections. However, this method has problems such as low construction efficiency, high cost, and significant safety risks. Furthermore, different pipe sections have different circumferences, requiring different material compatibility, necessitating the use of different raw materials. Existing methods involve welding steel plates to the inner and outer walls of the pressure-bearing pipe section and at the connection between the pipe section and the equalizing ring to enhance the yield strength. These are mostly temporary solutions, and there are currently no products specifically designed to address this problem. Although this method has some effectiveness, the manual welding and subsequent manual removal of the steel plates is cumbersome, complex, and time-consuming, severely impacting the progress of the pipe jacking project and increasing project costs and the risk of accidents.

[0004] In summary, existing protective measures mostly rely on increasing the wall thickness of pipe sections or setting up temporary supports inside the pipe sections. However, increasing the wall thickness will significantly increase construction costs and pipe section weight, and reduce jacking efficiency. The installation and removal of temporary supports are complicated and can only be applied to specific pipe sections, and cannot achieve full-process, continuous protection. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a socket-type ring-shaped clamp for preventing buckling failure of trenchless pipe jacking sections. This invention includes a load-bearing base and two side clamping plates. The clamping plates feature a double-layer design, where the two layers work together during actual pipe jacking operations to evenly distribute pressure from all directions, avoiding pressure concentration that could damage the pipe section and effectively preventing buckling failure.

[0006] The technical solution of this utility model is: a socket-type ring-shaped clamp for preventing buckling failure of trenchless jacking pipe sections, comprising multiple sets of clamps and a load-bearing base. The multiple sets of clamps are arranged circumferentially along the load-bearing base, which undertakes the functions of connection and fixation. The characteristic is that each set of clamps includes an outer ring clamp and an inner ring clamp, with a gap between the outer ring clamp and the inner ring clamp. The gap between the multiple sets of clamps forms a hollow cylinder. When the pipe body is subjected to external load, the inner ring clamp and the outer ring clamp restrict the deformation of the pipe body.

[0007] According to the above-mentioned socket-type ring-shaped clamp for preventing buckling failure of trenchless jacking pipe sections, the clamp is characterized in that: the clamp consists of 12 sets.

[0008] According to the above-mentioned socket-type ring clamp for preventing buckling failure of trenchless jacking pipe sections, the inner ring clamp and the outer ring clamp are connected to the load-bearing base by welding or integral casting.

[0009] According to the above-described socket-type ring clamp for preventing buckling failure of trenchless jacking pipe sections, the feature is that: it further includes an outer ring, an outer ring is provided between every two outer ring clamps, the outer ring and the inner side of the outer ring clamps form an integral cylinder, the outer ring clamps are provided with two T-shaped grooves, and the two sides of the outer rings are provided with corresponding T-shaped protrusions, and the outer ring is installed on the outer ring clamps by a snap-fit ​​method.

[0010] According to the above-mentioned socket-type ring-shaped clamp for preventing buckling failure of trenchless jacking pipe sections, the feature is that: it further includes an inner ring, an inner ring is provided between every two inner ring clamping plates, the inner ring and the outer side of the inner ring clamping plate form an integral cylinder, the inner ring clamping plate is provided with two T-shaped grooves, and the two sides of the inner ring are provided with corresponding T-shaped protrusions, and the inner ring is installed on the inner ring clamping plate by a snap-fit ​​method.

[0011] According to the above-described socket-type ring clamp for preventing buckling failure of trenchless jacking pipe sections, the feature is that it further includes an outer ring clamp plate and an inner ring clamp plate, the outer ring clamp plate and the inner ring clamp plate being respectively connected to an outer ring and an inner ring.

[0012] According to the above-mentioned socket-type ring-shaped clamp for preventing buckling failure of trenchless jacking pipe sections, the characteristic is that: the force-bearing base is provided with a T-shaped groove, and the bottom of the outer ring clamp is provided with a T-shaped protrusion, which is inserted into the T-shaped groove of the force-bearing base through the T-shaped protrusion of the outer ring clamp.

[0013] Compared with existing technologies, this device has the following outstanding features and advantages: it is easy to install and disassemble, convenient to operate, relatively robust, and has a long service life. It eliminates the need for manual welding and dismantling, significantly reducing the cost and time of manual welding. Attached Figure Description

[0014] Figure 1 This is a three-dimensional schematic diagram of the present invention.

[0015] Figure 2 This is the front view of the present utility model.

[0016] Figure 3 This is the front view of the present invention (with outer ring).

[0017] Figure 4 This is the front view of the present utility model (with inner collar).

[0018] Figure 5 This is the front view of the present utility model (with inner and outer rings).

[0019] Figure 6 This is a schematic diagram of the connection between the load-bearing base and the outer ring clamp.

[0020] Figure 7 This is a schematic diagram of the connection between the collar and the clamp.

[0021] Explanation of reference numerals in the attached diagram: 1. Clamp; 11. Outer ring clamp; 12. Inner ring clamp; 2. Force-bearing base; 3. Outer ring; 4. Inner ring. Detailed Implementation

[0022] The technical solutions in the embodiments of this utility model are described clearly and completely below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0023] like Figure 1As shown, this utility model discloses a socket-type ring-shaped clamp for preventing buckling failure of trenchless pipe jacking sections. It includes multiple sets of clamps 1 (12 sets in this embodiment) and a force-bearing base 2. The clamps 1 are evenly arranged circumferentially along the force-bearing base 2. The force-bearing base 2 plays a crucial role in connection and fixation within the entire device, serving as the connection hub between the device and the external structure or foundation. It ensures the stability of the device during operation while accurately and efficiently transmitting the jacking force from the rear of the device to the jacked pipe. Each clamp 1 includes an outer ring clamp 11 and an inner ring clamp 12, with a gap between the outer ring clamp 11 and the inner ring clamp 12. The gap between the multiple clamps 1 forms a hollow cylinder. This allows a circular jacking pipe section to be inserted into the gap formed by the multiple clamps 1. The outer ring clamp 11 and the inner ring clamp 12 arranged in a ring effectively fix and constrain the deformation of the clamped pipe. When the pipe body is subjected to external loads, the inner ring clamp 12 and the outer ring clamp 11 can limit the deformation of the pipe body and keep it in a stable shape and structure. This is equivalent to increasing the overall stiffness and strength of the pipe body by increasing the effective thickness of the pipe body.

[0024] The inner ring clamping plate 12, the outer ring clamping plate 11, and the load-bearing base 2 of this utility model can be welded by full penetration weld or integrally cast to ensure the strength of the connection.

[0025] The working principle of this utility model is briefly described as follows: Before installing the equalizing ring in the pipe jacking project, a crane hoists the device into the working shaft. Workers align the inner seams of the inner and outer double-layer clamps with the steel pipe wall and push the device in, ensuring that the steel pipe diameter is centered on the inner and outer double-layer clamps. During the pipe jacking process, when the pipe body tends to yield, the inner and outer double clamps constrain the deformation and increase the yield strength of the pipe body. After use, the device is removed for repeated installation and use before jacking the next pipe section.

[0026] like Figure 3 As shown, the socket-type ring clamp of this utility model for preventing buckling failure of trenchless jacking pipe sections may further include an outer ring 3. An outer ring 3 is provided between every two outer ring clamps 11, and the outer ring 3 and the inner side of the outer ring clamp 11 form an integral cylinder, which can further increase the overall rigidity and strength of the pipe body. Two T-shaped grooves are provided on the outer ring clamp 11, and corresponding T-shaped protrusions are provided on both sides of the outer ring 3. This allows the outer ring 3 to be easily installed on the outer ring clamp 11 by a snap-fit ​​method, thereby making the outer layer protection of the jacking pipe section more uniform around the circumference.

[0027] like Figure 4As shown, the socket-type ring clamp of this utility model for preventing buckling failure of trenchless jacking pipe sections may further include an inner ring 4. An inner ring 4 is provided between every two inner ring clamping plates 12, and the inner ring 4 and the outer side of the inner ring clamping plate 12 form an integral cylinder, which can further increase the overall rigidity and strength of the pipe body. Two T-shaped grooves are provided on the inner ring clamping plate 12, and corresponding T-shaped protrusions are provided on both sides of the inner ring 4. This allows the inner ring 4 to be easily installed on the inner ring clamping plate 12 through a snap-fit ​​method, thereby making the inner layer protection on the circumference of the jacking pipe section more uniform.

[0028] like Figure 5 As shown, this utility model can simultaneously connect an outer ring 3 and an inner ring 4 to the outer ring clamp 11 and the inner ring clamp 12 respectively, thereby making the force on the inside and outside of the jacking pipe section more uniform.

[0029] like Figure 6 As shown, the force-bearing base 2 of this utility model can be provided with a T-shaped groove, and the bottom of the outer ring clamp 11 is provided with a corresponding T-shaped protrusion. The T-shaped protrusion of the outer ring clamp 11 is inserted into the T-shaped groove of the force-bearing base 2. In this way, the size of the circumference can be adjusted according to the jacking pipe section, so as to adapt to different models of jacking pipe sections.

[0030] This invention's device can be quickly assembled and disassembled by workers, thus avoiding the traditional plate welding and dismantling processes in construction. It significantly reduces the cost and time of manual welding, avoids the uncertainties and safety hazards caused by manual operation, and efficiently solves the long-standing problem of pipe section buckling failure in pipe jacking projects, providing a safer, more economical, and efficient solution for trenchless underground pipe jacking construction.

[0031] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present utility model should be included within the protection scope of the present utility model.

[0032] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present utility model should be included within the protection scope of the present utility model.

Claims

1. A socket-type ring clamp for preventing buckling failure of trenchless pipe jacking sections, comprising multiple sets of clamps (1) and a load-bearing base (2), wherein the multiple sets of clamps (1) are arranged circumferentially along the load-bearing base (2), and the load-bearing base (2) undertakes the functions of connection and fixation, characterized in that: Each set of clamps (1) includes an outer ring clamp (11) and an inner ring clamp (12). There is a gap between the outer ring clamp (11) and the inner ring clamp (12). The gap between multiple sets of clamps (1) forms a hollow cylinder. When the pipe body is subjected to external load, the inner ring clamp (12) and the outer ring clamp (11) restrict the deformation of the pipe body.

2. The socket-type ring-shaped clamp for preventing buckling failure of trenchless pipe jacking sections according to claim 1, characterized in that: The fixture (1) consists of 12 sets.

3. A socket-type ring-shaped clamp for preventing buckling failure of trenchless pipe jacking sections according to claim 1 or 2, characterized in that: The inner ring clamp (12) and the outer ring clamp (11) are connected to the load-bearing base (2) by welding or integral casting.

4. A socket-type ring-shaped clamp for preventing buckling failure of trenchless pipe jacking sections according to claim 1 or 2, characterized in that: It also includes an outer ring (3), an outer ring (3) is provided between every two outer ring clamps (11), the outer ring (3) and the inner side of the outer ring clamp (11) form an integral cylinder, the outer ring clamp (11) is provided with two T-shaped grooves, and the two sides of the outer ring (3) are provided with corresponding T-shaped protrusions, and the outer ring (3) is installed on the outer ring clamp (11) by snap-fit.

5. A socket-type ring-shaped clamp for preventing buckling failure of trenchless pipe jacking sections according to claim 1 or 2, characterized in that: It also includes an inner ring (4), with an inner ring (4) set between every two inner ring clamps (12). The inner ring (4) and the outer side of the inner ring clamp (12) form an integral cylinder. The inner ring clamp (12) is provided with two T-shaped grooves, and the two sides of the inner ring (4) are provided with corresponding T-shaped protrusions. The inner ring (4) is installed on the inner ring clamp (12) by a snap-fit ​​method.

6. A socket-type ring-shaped clamp for preventing buckling failure of trenchless pipe jacking sections according to claim 1 or 2, characterized in that: It also includes an outer ring clamp (11) and an inner ring clamp (12), with the outer ring clamp (11) and inner ring clamp (12) respectively connecting the outer ring (3) and the inner ring (4).

7. A socket-type ring-shaped clamp for preventing buckling failure of trenchless pipe jacking sections according to claim 1 or 2, characterized in that: The force-bearing base (2) is provided with a T-shaped groove, and the bottom of the outer ring clamp (11) is provided with a T-shaped protrusion. The T-shaped protrusion of the outer ring clamp (11) is inserted into the T-shaped groove of the force-bearing base (2).

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