Anti-sinking device for pipe jacking machine head

Abstract

The utility model provides a pipe jacking machine head anti-sinking device which comprises a plurality of guide joints distributed at intervals, and every two adjacent guide joints are connected through a connecting cable to form a banding belt. Two guide rails are arranged below the pipe jacking machine and fixed to the bottom of the receiving well, and the two ends of the banding belt are connected to the two sides of the guide rails through locking ropes respectively. The guide joint is a square frame, rollers are distributed on the two sides, corresponding to the circumferential direction of the pipe jacking machine, of the guide joint, and the rollers abut against the outer wall of the pipe jacking machine correspondingly so as to be in sliding fit with the pipe jacking machine. The hooping belt is arranged when the pipe jacking machine goes out of a hole, and the pipe jacking machine is limited through the hooping belt, so that head kowtows and out-of-control are prevented, and sinking and deviation of a pipe jacking machine head are avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of pipe jacking construction, and particularly relates to a pipe jacking machine head anti-sinking device. Background Art

[0002] With the development and construction of the economy, the number of water conservancy and hydropower projects in my country is increasing, and related technologies are becoming more and more mature. Among the many construction technologies, the application of pipe jacking construction can significantly promote the improvement of the economic benefits of the project and play a very important role in engineering construction.

[0003] Pipe jacking construction is a trenchless construction method. Pipe jacking construction uses the jacking force generated by jacking equipment to overcome the friction between the pipe and the surrounding soil, push the pipe into the soil along the designed route, and transport the soil away.

[0004] During the pipe jacking construction process, when the pipe is initially pushed in and out of the hole, the pipe jacking machine head is too long compared to the cantilever of the subsequent pipe sections, and the center of gravity of the pipe jacking machine head is forward, which may cause the machine head to sink and the pipe sections to warp up, which may lead to poor pipe jacking posture and interface damage.

[0005] Therefore, it is necessary to provide an improved technical solution to address the above-mentioned deficiencies in the prior art. Utility Model Content

[0006] The purpose of the utility model is to overcome the deficiencies in the prior art, and the utility model provides a device for preventing a pipe jacking machine head from sinking.

[0007] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0008] A pipe jacking machine head anti-sinking device comprises a plurality of guide sections distributed at intervals, and two adjacent guide sections are connected to each other by a connecting cable to form a tightening belt;

[0009] Two guide rails are provided below the pipe jacking machine, the two guide rails are fixed at the bottom of the receiving well, and the two ends of the tightening belt are connected to the two sides of the guide rails through locking ropes respectively;

[0010] The guide section is a square frame, and rollers are distributed on both sides of the guide section corresponding to the circumference of the pipe jacking machine. The rollers are correspondingly abutted against the outer wall of the pipe jacking machine to slide with the pipe jacking machine.

[0011] Preferably, hinged stations are respectively provided on both sides of the guide section corresponding to the two ends of the axial direction of the pipe jacking machine, and two adjacent guide sections are connected by two connecting cables.

[0012] Preferably, the guide joint is welded from square steel, a center rod is provided in the middle of the guide joint to form a sun-shaped structure, and two rollers are connected to both sides of the center rod through main shafts.

[0013] Preferably, one of the locking ropes is connected to both sides of the guide rail through a fall chain, and a connection point corresponding to the locking rope is provided on each guide rail.

[0014] Preferably, a plurality of cross bars are provided between the two guide rails, and a support is provided between two adjacent cross bars. An arc-shaped supporting surface corresponding to the pipe jacking machine is provided above the support, and a mounting groove is provided in the middle of the supporting surface. Two rollers are symmetrically distributed in the mounting groove, and the elevation of the upper edge of the roller is adapted to the elevation of the corresponding position of the pipe jacking machine.

[0015] Preferably, the length of the tightening belt is not less than half of the outer circumference of the pipe jacking machine.

[0016] Preferably, both ends of the tightening belt are fixed by two locking ropes respectively.

[0017] Beneficial effect: A tightening belt is set when the pipe jacking machine comes out of the hole, and the tightening belt is used to limit the pipe jacking machine, thereby preventing knocking and loss of control, and avoiding the sinking and deviation of the pipe jacking machine head. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings constituting part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments and descriptions of the present invention are used to explain the present invention and do not constitute an improper limitation on the present invention. Among them:

[0019] Figure 1 A schematic diagram of the structure of the tightening belt in a specific embodiment provided by the utility model;

[0020] Figure 2 This is a simplified structural diagram of the guide section in a specific embodiment provided by the utility model.

[0021] In the figure: 1. guide joint; 2. fall chain; 3. hook; 4. roller; 5. locking rope; 6. hinge; 7. connecting cable. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of the present invention.

[0023] In the description of the present invention, the terms "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and do not require that the present invention must be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention. The terms "connected" and "connection" used in the present invention should be understood in a broad sense. For example, they can be fixed connections or detachable connections; they can be directly connected or indirectly connected through intermediate components. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0024] The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments. It should be noted that the embodiments and features in the embodiments of the present invention can be combined with each other without conflict.

[0025] like Figure 1-2 As shown, a device for preventing the head of a pipe jacking machine from sinking comprises a plurality of guide sections 1 distributed at intervals, the guide sections 1 having a certain length, the plurality of guide sections 1 being connected at the ends, and a connecting cable 7 being arranged between two adjacent guide sections 1 to form a tightening belt, the tightening belt having a certain width, and being able to be flexibly deformed and tightened on the head of the pipe jacking machine, the guide sections 1 being hinged by hinges, etc., and more preferably, two adjacent guide sections 1 being connected by a connecting cable 7 to form a flexible tightening belt, which can better adhere to the outer wall of the pipe jacking machine, and two guide rails being arranged under the pipe jacking machine, the guide rails being used to guide the pipe jacking machine, the guide rails being able to be I-beams, and the two guide rails It is fixed at the bottom of the receiving well, and embedded parts corresponding to the guide rail are embedded at the bottom of the receiving well. The two are fixed to the guide rail by welding, and the two ends of the tightening belt are connected to the two sides of the guide rail by locking ropes 5, thereby forming a hoop-like structure; the guide section 1 is a square frame, and the angle of the corresponding pipe jacking machine is not more than 30 degrees, preferably 20-25 degrees, and rollers 4 are distributed on both sides of the guide frame corresponding to the circumference of the pipe jacking machine. The rollers 4 extend out of the inner side of the guide frame, and the rollers 4 correspondingly contact the outer wall of the pipe jacking machine to slide with the pipe jacking machine, thereby limiting the travel route of the pipe jacking machine and preventing the pipe jacking machine from sinking and deflecting during the exit process.

[0026] In an optional embodiment, the guide section 1 is square, and articulated stations are respectively provided on both sides of the guide section 1 corresponding to the two ends of the axial direction of the pipe jacking machine. Two adjacent guide sections 1 are connected by two connecting cables 7, so that the guide section 1 can be subjected to force as a whole, and the guide section 1 will not be overloaded during the forward advancement of the pipe jacking machine, thereby improving the limiting capacity of the pipe jacking machine.

[0027] In an alternative embodiment, the main body of the guiding section 1 is a square frame formed by welding square steel. The square steel on both sides corresponding to the axial direction of the pipe jacking machine extends forward to form a hinged station. A central rod is provided in the middle of the guiding section 1 to form a "day" - shaped structure. The central rod is square steel arranged along the axial direction of the pipe jacking machine, so that two installation spaces are formed on both sides of the central rod. Two rollers 4 are respectively connected to the two installation spaces through main shafts. The two rollers 4 in each installation space are spaced apart in the axial direction of the pipe jacking machine, and specifically, they can be close to the two ends corresponding to the axial direction of the installation space of the pipe jacking machine.

[0028] In an alternative embodiment, one of the locking ropes 5 is connected to both sides of the guide rail through a chain block 2. The chain block 2 is tightened by using the chain block 2 hoist, so that the tightening belt can tighten the pipe jacking machine, ensuring that the traveling path of the pipe jacking machine can be limited. Connection points corresponding to the locking ropes 5 are provided on each guide rail, and the connection points can be steel plates or hooks 3.

[0029] Two locking ropes 5 are correspondingly arranged at both ends of the tightening belt. The two locking ropes 5 at the same end of the corresponding tightening belt are both connected to the guide rail through a chain block 2.

[0030] In an alternative embodiment, the length of the connecting cable 7 between two adjacent guiding sections 1 can be adapted to the length of the guiding section 1. The length of the tightening belt is not less than half of the outer circumference of the pipe jacking machine. Preferably, the length of the tightening belt corresponds to the length of the 240 - degree arc of the outer circumference of the pipe jacking machine. Both ends of the tightening belt are connected to the guide rail through the locking rope 5 according to the actual length.

[0031] A pull rope is provided between the two connecting cables 7 of two adjacent guiding sections 1. Both ends of the pull rope are correspondingly connected between the two connecting cables 7, and multiple connecting cables 7 are evenly distributed between two adjacent guiding sections 1.

[0032] In an alternative embodiment, a plurality of cross bars are provided between the two guide rails to fix the guide rails. A supporting member is correspondingly provided between two adjacent cross bars. Both sides of the supporting member are fixed to the supporting member through bolts. The supporting member can be solid or hollow. An arc - shaped supporting surface corresponding to the pipe jacking machine is provided above the supporting member. An installation groove is provided in the middle of the supporting surface, and two supporting rollers are symmetrically distributed in the installation groove. The supporting rollers are rotationally connected to the installation groove through a main shaft perpendicular to the extending direction of the guide rail. The elevation of the upper edge of the supporting rollers is adapted to the elevation of the corresponding position of the pipe jacking machine, so as to lift the pipe jacking machine and ensure the limitation of the elevation below the pipe jacking machine.

[0033] In an alternative embodiment, both ends of the connecting cable 7 are bound to a U - shaped hinge member 6. The U - shaped hinge member 6 is correspondingly clamped on both sides of the hinged station, and a cross pin correspondingly passes through the U - shaped hinge member 6 and the hinged station to achieve hinging.

[0034] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention are within the scope of protection of the pending claims of the present invention.

Claims

1. A pipe jacking machine head anti-sinking device, characterized in that: It comprises a plurality of guide sections which are distributed at intervals, and two adjacent guide sections are connected to each other by connecting cables to form a tightening belt; Two guide rails are provided below the pipe jacking machine, the two guide rails are fixed at the bottom of the receiving well, and the two ends of the tightening belt are connected to the two sides of the guide rails through locking ropes respectively; The guide section is a square frame, and rollers are distributed on both sides of the guide section corresponding to the circumference of the pipe jacking machine. The rollers are correspondingly abutted against the outer wall of the pipe jacking machine to slide with the pipe jacking machine.

2. The pipe jacking machine head anti-sinking device according to claim 1, characterized in that: Both sides of the guide section corresponding to the two ends of the axial direction of the pipe jacking machine are respectively provided with hinged stations, and two adjacent guide sections are connected by two connecting cables.

3. The anti-sinking device for the pipe jacking machine head according to claim 1, characterized in that: The guide joint is welded from square steel, a center rod is arranged in the middle of the guide joint to form a sun-shaped structure, and two rollers are connected to both sides of the center rod through main shafts.

4. The pipe jacking machine head anti-sinking device according to claim 1, characterized in that: One of the locking ropes is connected to both sides of the guide rail through a fall chain, and a connection point corresponding to the locking rope is provided on each guide rail.

5. The pipe jacking machine head anti-sinking device according to claim 1, characterized in that: A plurality of cross bars are arranged between the two guide rails, and a support is arranged between two adjacent cross bars. An arc-shaped supporting surface corresponding to the pipe jacking machine is provided above the support, and a mounting groove is arranged in the middle of the supporting surface. Two rollers are symmetrically distributed in the mounting groove, and the elevation of the upper edge of the roller is adapted to the elevation of the corresponding position of the pipe jacking machine.

6. The pipe jacking machine head anti-sinking device according to claim 1, characterized in that: The length of the tightening belt is not less than half of the outer circumference of the pipe jacking machine.

7. The pipe jacking machine head anti-sinking device according to claim 2, characterized in that: The two ends of the tightening belt are respectively fixed by two locking ropes.

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