Connection structure of flange-type retractable tunnel boring machine head for arc beam jacking

Abstract

The present invention relates to a flange-type, recyclable tunnel boring machine head connection structure for arc-beam jacking, comprising: a connecting plate disposed at the end face of the arc-beam, provided with a plurality of threaded connection holes; an inner and outer breast plates disposed on the tunnel boring machine head, opposed to each other, with assembly holes formed on the inner and outer breast plates corresponding to the threaded connection holes, allowing the inner breast plate to be attached to the connecting plate; and connecting bolts extending through the outer and inner breast plates and threadedly connected to corresponding bolt connection holes, thereby connecting the tunnel boring machine head to the arc-beam. The present invention achieves this connection by providing first inner and outer breast plates on the tunnel boring machine head in contact with the connecting plate, and then connecting the connecting bolts. Since the tunnel boring machine head is not fully inserted into the arc-beam, during underwater separation operations, the tunnel boring machine head and the arc-beam can be separated by simply loosening the connecting bolts, thereby reducing the difficulty of underwater disassembly and assembly. Furthermore, the connection provided by the connecting bolts is secure and reliable, meeting the required strength requirements for the connection between the tunnel boring machine head and the arc-beam.

Description

Technical Field

[0001] The present invention relates to the technical field of underwater jacking, in particular to a connection structure of a flange-type recoverable tunneling machine head for arc-beam jacking. Background Art

[0002] In underwater salvage operations, the commonly used method is to use a sealed box. This involves first covering the object to be salvaged with a large iron box, then sealing it with steel beams at the bottom of the box, thereby enclosing the object. The entire box is then hoisted out of the water, completing the salvage operation. However, the installation of steel beams in the sealed box method is difficult and challenging.

[0003] To this end, the applicant has provided a construction plan for jacking an arc-shaped beam, in which a tunnel boring machine head is provided at the end of the arc-shaped beam, so that the arc-shaped beam can be jacked in the underwater soil, solving the problem of the difficulty and difficulty in constructing the bottom steel beam in the sealing box method. However, the arc-shaped beam needs to be connected to other structures after jacking. At this time, the tunnel boring machine head on the arc-shaped beam needs to be removed underwater. If the tunnel boring machine head is welded and fixed to the arc-shaped beam, the underwater cutting operation is difficult. If a plug-in connection is adopted, the tunnel boring machine head is inserted into the arc-shaped beam, and it is difficult to lift out the tunnel boring machine head during underwater separation. Therefore, there is an urgent need to provide a new solution. Summary of the Invention

[0004] The purpose of the present invention is to overcome the defects of the prior art and provide a flange-type recyclable tunneling head connection structure for arc beam jacking, so as to solve the problems that the existing welding connection is difficult to cut off underwater and the plug-in connection method is difficult to separate underwater.

[0005] The technical solution to achieve the above purpose is:

[0006] The present invention provides a flange-type recyclable tunnel boring machine head connection structure for arc beam jacking, comprising:

[0007] A connecting plate provided at the end surface of the arc-shaped beam, wherein the connecting plate is provided with a plurality of threaded connection holes;

[0008] An inner chest plate and an outer chest plate provided on the tunnel boring machine head, the inner chest plate and the outer chest plate being arranged opposite to each other, and having assembly holes corresponding to the threaded connection holes, so that the inner chest plate can be attached to the connection plate; and

[0009] Connecting bolts are provided through the assembly holes on the outer breast plate and the inner breast plate and are threadedly connected to the corresponding bolt connection holes, and the tunnel boring machine head and the curved beam are connected via the connecting bolts.

[0010] The flange-type retrievable tunnel boring machine head connection structure of the present invention utilizes inner and outer breast plates aligned with connecting plates on the tunnel boring machine head, which are then connected via connecting bolts. Since the tunnel boring machine head is not fully inserted into the curved beam, the tunnel boring machine head and curved beam can be separated by simply loosening the connecting bolts during underwater separation operations, reducing the difficulty of underwater disassembly and assembly. Furthermore, the connecting bolts provide a secure and reliable connection, meeting the required strength requirements for the connection between the tunnel boring machine head and the curved beam.

[0011] A further improvement of the connection structure of the flange-type recoverable tunneling machine head for arc beam jacking of the present invention is that a reinforcing tube is supported and connected between the inner breast plate and the outer breast plate, and the reinforcing tube is arranged corresponding to the assembly hole.

[0012] A further improvement of the connection structure of the flange-type recyclable tunnel boring machine head for arc-beam jacking of the present invention is that a connection port communicating with the interior of the arc-beam is formed in the middle of the connection plate;

[0013] An outwardly protruding annular structure is provided on the surface of the inner chest plate away from the outer chest plate. When the inner chest plate and the connecting plate are in contact with each other, the annular structure is inserted into the connecting port and is in close contact with the wall of the connecting port.

[0014] A further improvement of the connection structure of the flange-type recyclable tunneling head for arc beam jacking of the present invention is that the tunneling head includes a cylinder;

[0015] The inner chest plate and the outer chest plate are fixedly arranged in the cylinder.

[0016] A further improvement of the connection structure of the flange-type recoverable tunneling machine head for arc beam jacking of the present invention is that the edge of the connecting plate is provided with a raised edge, and the raised edge is blocked at the outer periphery of the cylinder.

[0017] A further improvement of the connection structure of the flange-type recoverable tunneling machine head for arc beam jacking of the present invention is that there are four threaded connection holes, which are arranged at the four corners of the connection plate.

[0018] A further improvement of the connection structure of the flange-type recoverable tunneling machine head for arc beam jacking of the present invention is that the assembly hole of the outer breast plate is provided with a thread and is threadedly connected to the connecting bolt. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a structural schematic diagram of the connection structure of the flange-type recyclable tunneling machine head used for arc beam jacking of the present invention.

[0020] Figure 2 This is a structural schematic diagram of the separation of the tunneling head and the curved beam in the connection structure of the flange-type recoverable tunneling head for curved beam jacking of the present invention.

[0021] Figure 3 This is a structural schematic diagram from another perspective of the connection structure of the flange-type recoverable tunneling head for arc-beam jacking of the present invention, in which the tunneling head and the arc-beam are separated.

[0022] Figure 4 This is a cross-sectional view of the connection structure of the flange-type recyclable tunnel boring machine head used for arc beam jacking according to the present invention.

[0023] Figure 5 This is a structural schematic diagram of the curved beam in the connection structure of the flange-type recoverable tunneling machine head used for curved beam jacking of the present invention.

[0024] Figure 6 This is a schematic structural diagram of the outer breast plate in the connection structure of the flange-type recoverable tunneling machine head for arc beam jacking according to the present invention.

[0025] Figure 7 This is a schematic structural diagram of the inner breast plate in the connection structure of the flange-type recoverable tunneling machine head used for arc beam jacking of the present invention.

[0026] Figure 8 This is a partial cross-sectional view of the connection structure of the flange-type recyclable tunnel boring machine head used for arc beam jacking of the present invention. DETAILED DESCRIPTION

[0027] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0028] See Figure 1 The present invention provides a connection structure of a flange-type recyclable tunnel boring machine head for arc-beam jacking, which is used to connect the tunnel boring machine head and the arc-beam, and provides a quick disassembly and assembly installation method for the tunnel boring machine head, so as to meet the requirements of smooth disassembly and assembly of the tunnel boring machine head underwater. The flange-type recyclable tunnel boring machine head of the present invention is placed on the connecting plate on the arc-beam, and then fastened by connecting bolts, so that the tunnel boring machine head and the arc-beam are two relatively independent components. When disassembling underwater, the tunnel boring machine head and the arc-beam can be separated by loosening the connecting bolts, which reduces the difficulty of underwater disassembly and assembly. Thereby, the problem of high difficulty in underwater cutting operation existing in the existing welding connection and the problem of difficult underwater separation existing in the plug-in connection method are solved. The connection structure of the flange-type recyclable tunnel boring machine head for arc-beam jacking of the present invention is described below with reference to the accompanying drawings.

[0029] See Figure 1 , showing the structural diagram of the flange type recyclable tunnel boring machine head connection structure for the arc beam jacking of the present invention. Figure 4 , showing a cross-sectional view of the connection structure of the flange-type recyclable tunnel boring machine head for arc beam jacking of the present invention. Figure 8 , showing a partial cross-sectional view of the connection structure of the flange-type recyclable tunnel boring machine head for arc beam jacking of the present invention. Figure 1 、 Figure 4 and Figure 8 , the connection structure of the flange-type recyclable tunneling machine head for arc beam jacking of the present invention is described.

[0030] like Figure 1 、 Figure 4 and Figure 8 As shown in the figure, the connection structure of the flange type recyclable tunnel boring machine head for arc beam jacking of the present invention includes a connection plate 21, an inner breast plate 22, an outer breast plate 23 and a connection bolt 24. The connection plate 21 is provided at the end surface of the arc beam 11, and is combined with the outer breast plate 23 to form a connection bolt 24. Figure 5 As shown, the connecting plate 21 is provided with a plurality of threaded connection holes 211; the inner breast plate 22 and the outer breast plate 23 are provided on the tunneling machine head 12, and the inner breast plate 22 and the outer breast plate 23 are arranged opposite to each other. Figure 6 and Figure 7 As shown, the inner breast plate 22 and the outer breast plate 23 are provided with assembly holes 221, 231 corresponding to the threaded connection holes 211, and the inner breast plate 22 on the tunneling head 12 can be attached to the connecting plate 21; the connecting bolts 24 pass through the assembly holes 221, 231 on the outer breast plate 23 and the inner breast plate 22 and are threadedly connected to the corresponding bolt connection holes 221, and the tunneling head 12 and the curved beam 11 are connected through the connecting bolts 24.

[0031] like Figure 2 and Figure 3 As shown, when installing the tunnel boring machine head 12, it is placed at the end of the curved beam 11, with the inner breast plate 22 of the tunnel boring machine head 12 aligned with the connecting plate 21. Connecting bolts 24 are then installed and passed through the assembly holes 231 and 221 in the outer and inner breast plates 23 and 22, where they are then threaded into the threaded connection holes 211, thereby connecting the tunnel boring machine head 12 to the curved beam 11. The connection structure of the present invention is easy to install and remove, and the tunnel boring machine head and curved beam are two independent components, enabling easy underwater disassembly and separation, reducing the difficulty of underwater assembly and disassembly.

[0032] In a specific embodiment of the present invention, Figure 8 As shown, a reinforcing tube 25 is provided between the inner and outer chest plates 22 and 23. This tube 25 is positioned corresponding to the mounting holes 221 and 231. This arrangement enhances the connection strength between the inner and outer chest plates. Furthermore, the placement of the reinforcing tube 25 corresponding to the mounting holes allows the connecting bolts 24 to pass through the reinforcing tube 25 and threadably connect with the corresponding threaded holes 211 during installation. This reinforcing tube 25 also enhances the connection strength of the connecting bolts 24. Preferably, the reinforcing tube 25 is a steel tube and is welded to the corresponding inner and outer chest plates.

[0033] In a specific embodiment of the present invention, Figure 5As shown, the middle portion of the connecting plate 21 is formed with a connecting port 212 communicating with the interior of the arc beam 11. Figure 4 、 Figure 7 and Figure 8 As shown, an outwardly protruding annular structure 222 is provided on the surface of the inner chest plate 22 away from the outer chest plate 23. When the inner chest plate 22 is attached to the connecting plate 21, the annular structure 222 is inserted into the connecting port 212 and is tightly attached to the wall of the connecting port 212.

[0034] Specifically, a driving mechanism is provided on the tunnel boring machine head 12, and the end face of the annular structure 222 of the inner breast plate 22 is fixedly connected to the driving mechanism. When the tunnel boring machine head 12 is installed, the driving mechanism is allowed to pass through the connecting port 212 and extend into the interior of the curved beam 11. The annular structure 222 is tightly attached to the wall of the connecting port 212, which plays a role in positioning the tunnel boring machine head 12, so that the tunnel boring machine head 12 will not move between the curved beam 11 during the tunneling operation, thereby improving the structural stability of the tunnel boring machine head 12.

[0035] In a specific embodiment of the present invention, Figure 2 and Figure 3 As shown, the tunnel boring machine head 12 includes a cylinder 121 ; the inner breast plate 22 and the outer breast plate 23 are fixedly disposed in the cylinder 121 .

[0036] The inner chest plate 22 is fixed on one end surface of the cylinder 121, and is combined with Figure 7 As shown, there are two circular holes on the inner breast plate 22, which are used to pass through the driving mechanism connected to the cutting tool on the tunnel boring machine head 12. Figure 8 As shown, the outer breast plate 23 is fixed in the cylinder 121, and a certain distance is left between the outer breast plate 23 and the corresponding end surface of the cylinder 121. Figure 6 As shown, two circular holes are also provided on the outer breast plate 23 for passing a driving mechanism connected to the cutting tool on the tunneling head 12 .

[0037] Combine Figure 6 and Figure 7 As shown, a mud inlet 223 is provided in the middle of the inner breast plate 22. This inlet 223 is used to connect to a mud drainage pipeline, allowing mud and water removed by the tunnel boring machine head 12 to be discharged through the mud drainage pipeline. Two water spray holes 224 are provided at the bottom of the inner breast plate 22. These water spray holes 224 are connected to water pipes to spray water onto the tunnel boring machine head 12 to rinse the cutting tools on the tunnel boring machine head 12.

[0038] In a specific embodiment of the present invention, Figure 5 As shown, there are four threaded connection holes 211 on the connecting plate 21, which are located at the four corners of the connecting plate 21. The connecting plate 21 is preferably a square plate. Figure 6 and Figure 7 As shown, the inner chest plate and the outer chest plate are also square plates, and there are four assembly holes, which are located at the four corners of the square plates.

[0039] In a specific embodiment of the present invention, Figure 4 As shown, a raised edge 213 is provided on the edge of the connecting plate 21, and the raised edge 213 is located on the outer periphery of the barrel 121. The raised edge 213 facilitates the installation and positioning of the tunnel boring machine head 12. When the tunnel boring machine head 12 is placed within the raised edge 213, the assembly holes on the inner and outer breast plates of the tunnel boring machine head 12 can be aligned with the corresponding threaded connection holes, thereby facilitating the installation of the connecting bolts.

[0040] In one embodiment of the present invention, the assembly holes 231 on the outer breast plate 23 are threaded, and the assembly holes 231 are threadedly connected to the connecting bolts 24. With the connecting bolts 24 threadedly connected to the assembly holes 231 on the outer breast plate 23, when the tunneling head 12 is disassembled underwater, the connecting bolts 24 are screwed out of the corresponding threaded connection holes 211, thereby releasing the connection between the tunneling head 12 and the curved beam 11. After the connection is released, the connecting bolts 24 remain threadedly connected to the outer breast plate 23, preventing them from falling during underwater disassembly.

[0041] The present invention has been described in detail above with reference to the embodiments of the accompanying drawings. A person skilled in the art can make various modifications to the present invention based on the above description. Therefore, certain details in the embodiments should not be construed as limiting the present invention. The scope of protection of the present invention shall be determined by the scope defined in the appended claims.

Claims

1. A flange-type retractable tunnel boring machine head connection structure for arc beam jacking, characterized in that: include: A connecting plate provided at the end surface of the arc-shaped beam, wherein the connecting plate is provided with a plurality of threaded connection holes; An inner chest plate and an outer chest plate provided on the tunnel boring machine head, the inner chest plate and the outer chest plate being arranged opposite to each other, and having assembly holes corresponding to the threaded connection holes, so that the inner chest plate can be attached to the connection plate; and Connecting bolts passing through the assembly holes on the outer breast plate and the inner breast plate and being threadedly connected to the corresponding bolt connection holes, connecting the tunnel boring machine head and the curved beam via the connecting bolts; A reinforcement tube is supported and connected between the inner chest plate and the outer chest plate, and the reinforcement tube is arranged corresponding to the assembly hole; A connection port communicating with the interior of the arc beam is formed in the middle of the connection plate; An outwardly protruding annular structure is provided on the surface of the inner chest plate away from the outer chest plate. When the inner chest plate and the connecting plate are in contact with each other, the annular structure is inserted into the connecting port and is in close contact with the wall of the connecting port. The tunnel boring machine head includes a cylinder; The inner chest plate and the outer chest plate are fixedly arranged in the cylinder; The edge of the connecting plate is provided with a raised edge, and the raised edge is blocked at the outer periphery of the cylinder; A driving mechanism is provided on the tunnel boring machine head, and the end surface of the annular structure of the inner breast plate is fixedly connected to the driving mechanism. When the tunnel boring machine head is installed, the driving mechanism is passed through the connection port and extends into the interior of the curved beam; There are two circular holes on the inner breast plate, which are used to pass through the driving mechanism connected to the cutting tool on the tunneling head. The outer breast plate is fixed in the cylinder, and a certain distance is left between the outer breast plate and the corresponding end face of the cylinder. There are also two circular holes on the outer breast plate, which are used to pass through the driving mechanism connected to the cutting tool on the tunneling head.

2. The flange-type retractable tunnel boring machine head connection structure for arc beam jacking according to claim 1, characterized in that: There are four threaded connection holes, which are arranged at the four corners of the connection plate.

3. The flange-type retractable tunnel boring machine head connection structure for arc beam jacking according to claim 1, characterized in that: The assembly hole of the outer breast plate is provided with a thread and is threadedly connected to the connecting bolt.

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