Cut-and-cover self-propelled shield pipe joining device

Abstract

To solve the problem that when a conventional pipe joining method is performed using a messer shield machine, a joint between the joined pipes separates when a tail messer is moved forward, resulting in sewage leakage between the pipes.SOLUTION: In the present invention, a wire rope 19 is wrapped around and tightened around a pipe connection jig 55y (55) attached inside a sewer pipe 2 (2y) and the pipe connection jig 55x (55) attached inside the sewer pipe 2 (2x). Therefore, even if sediment below a tail frame is dragged and moved by the tail frame as the tail frame moves forward, tensile force of the wire rope 19 can be increased with both ends of the wire rope 19 connected to the tail frame, thereby preventing the joint between the sewer pipe 2 (2y) installed further ahead and a newly installed sewer pipe 2 (2x) from separating.SELECTED DRAWING: Figure 6

Description

[Technical Field]

[0001] The present invention relates to an open-cut self-propelled shield pipe joining device that has an intermediate jack connected between a front frame and a tail frame and is used to join pipes that are installed continuously. [Background technology]

[0002] A pipe joining method for transporting and joining pipes has been known for some time. In this type of pipe joining method, a pipe 101 to be joined is first lowered from a shaft, and then a pipe transport cart is driven into the pipe 101. The support beam 107 of the pipe transport cart is then lifted using a front hydraulic jack 105 and a rear hydraulic jack 106, thereby lifting up the pipe 101 (see FIG. 18). After the pipe 101 has been lifted to a predetermined height, it is pushed by a battery locomotive 114 and transported to the already fixed pipe 111 at the back. When the pipe 101 arrives at the fixed pipe 111, the battery locomotive 114 is decelerated to a certain speed, and the pipe 101 and the pipe 111 are joined. In this way, once the joining of pipe 101 and pipe 111 is completed, the pipe transport cart is pulled out of pipe 101 and moved to the first vertical shaft, and the above-mentioned procedure is repeated to join multiple pipes, thereby creating a pipe longer than the multiple joined pipes (for example, Patent Document 1). Here, Figure 18 is a side view showing a conventional pipe transport cart carrying a pipe and about to enter for joining. Furthermore, although the content of Patent Document 1 is not limited to pipes, for the convenience of explaining the present invention, it will be described as a pipe joining method.

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2005-67567 DISCLOSURE OF THE INVENTION [Problem to be solved by the invention]

[0004] In the conventional pipe joining method, in order to bury and install a new pipe underground where no pipe has been buried before, it is necessary to use a ground excavator to excavate the ground to the point where the pipe is to be installed, and then install the pipe in that excavation. To do this, it is necessary to first excavate the ground to create a recess where the new pipe will be installed, and then lower the pipe 101 into the recess and sequentially join the pipe 101 to the pipe 111.

[0005] However, in the conventional pipe joining method, the ground is excavated with a ground excavator (forming a recess where the pipe will be buried), and then the pipes 101 and 111 are repeatedly joined, but if the pipes 101 and 111 are joined using a Messel shield machine, when the tail messel is moved forward, the soil below the tail frame is dragged along by the tail frame, which can cause the joint between the joined pipes 101 and 111 to loosen and separate. If the joint between the joined pipes 101 and 111 loosens and separates, sewage will leak from between the pipes 101 and 111, and the sewage that leaks out of the pipes 101 and 111 will seep into the ground, sometimes causing the ground to rise.

[0006] The present invention has been made in consideration of the above-mentioned problems, and aims to provide an open-cut self-propelled shield pipe joining device that can reliably prevent the connection between an existing pipe installed at the other end and a newly installed pipe from coming apart, even when a new pipe is to be buried and installed underground where no pipes have been buried before. [Means for solving the problem]

[0007] In order to solve the above problems and achieve the above objects, a first aspect of the present invention is an open-cut self-propelled shield pipe joining device that has an intermediate jack connected between a front frame and a tail frame and is used to join pipes that are installed continuously, and that includes a front frame in which struts configured in the longitudinal direction are arranged between left and right frames each having vertical pillar members and horizontal reinforcement members, a tail frame connected to the front frame by the intermediate jack and having an open top for installing the pipe, a plurality of front messels provided on both the left and right sides of the front frame in the vertical direction, press-in jacks provided corresponding to each of the plurality of front messels and for moving the front messels in the front and rear directions, a plurality of bottom messels provided laterally on the bottom of the front frame and capable of protruding from the front bottom of the front frame, and press-in jacks provided corresponding to each of the plurality of bottom messels. and a bottom jack for moving the bottom mesh in the forward and backward directions, a plurality of tail meshes provided on the left and right sides of the tail frame in the up and down directions, and a rope-like member formed in a shape extending in the longitudinal direction and both ends connected to the tail frame. The rope-like member is connected to the tail frame after being wound at least once around a pipe connection jig attached to an existing pipe culvert that is a pipe installed at the front, and a pipe connection jig attached to a new pipe culvert that is a newly installed culvert joined behind the existing pipe culvert at the front, and the rope-like member is connected to the tail frame. When the tail frame is moved forward in the forward direction with both ends of the rope-like member connected to the tail frame, the tensile force of the rope-like member increases, so that the existing pipe culvert installed at the front and the newly installed new pipe do not separate even when the tail frame is moved forward in the forward direction.

[0008] According to the present invention, the rope-like member is wound at least once around the pipe connection jig attached to the existing pipe ahead and the pipe connection jig attached to the new pipe connected behind the existing pipe ahead, and then connected to the tail frame.Therefore, even if the soil and sand below the tail frame are dragged and moved by the tail frame as the tail frame moves forward, the tensile force of the rope-like member can be increased with both ends of the rope-like member connected to the tail frame, so that the existing pipe ahead and the newly installed new pipe ahead will not separate.

[0009] A second aspect of the present invention is a cut-and-cover self-propelled shield pipe joining device that has an intermediate jack connected between a front frame and a tail frame and is used to join pipes that are installed continuously, and that includes a front frame with struts arranged longitudinally between left and right frames each having vertical pillars and horizontal reinforcements, a tail frame connected to the front frame by the intermediate jack and with an open top so that the pipe can be installed, a plurality of front messels installed vertically on both the left and right sides of the front frame, a press-in jack installed corresponding to each of the plurality of front messels and moving the front messels in the forward and backward directions, a plurality of bottom messels installed horizontally on the bottom of the front frame and capable of protruding from the front bottom of the front frame, a bottom jack installed corresponding to each of the plurality of bottom messels and moving the bottom messels in the forward and backward directions, and a plurality of tail messels installed vertically on both the left and right sides of the tail frame, The apparatus includes a rope-like member formed in a shape extending in the longitudinal direction, the end of which is connected to the tail frame, and a wound rope-like member formed in a shape extending in the longitudinal direction, the both ends of which can be joined together, the wound rope-like member being wound at least once around a pipe connection jig attached to the existing pipe culvert at the other end, which is a pipe culvert installed at the other end, and a pipe connection jig attached to the new pipe culvert, which is a newly installed pipe culvert connected behind the existing pipe culvert at the other end, to join the both ends together, and the rope-like member is wound around the existing pipe culvert at the other end, which is a pipe culvert installed at the other end, by at least one turn. The pipe connection jig attached to the pipe culvert and the pipe connection jig attached to the new pipe culvert, which is a newly installed pipe culvert connected behind the existing pipe culvert, are connected to a wound rope-like member that is wrapped around the jig at least once and has both ends joined together.After this, when the tail frame is moved forward, the tensile force of the rope-like member increases, so that even when the tail frame is moved forward, the existing pipe culvert installed ahead and the newly installed new pipe culvert do not separate.

[0010] According to the present invention, a rope-like member is wound around a pipe connection jig attached to an existing pipe ahead and a pipe connection jig attached to a new pipe connected behind the existing pipe ahead at least once, and the two ends are connected to a wound rope-like member.Therefore, even if the soil and sand below the tail frame are dragged and moved by the tail frame as the tail frame moves forward, the tensile force of the rope-like member can be increased with both ends connected to the tail frame, so that the existing pipe ahead and the newly installed new pipe ahead will not separate.

[0011] A third aspect of the present invention is an open-cut self-propelled shield pipe joining device that has an intermediate jack connected between a front frame and a tail frame and is used to join pipes that are installed continuously, and that includes a front frame in which struts configured in the longitudinal direction are arranged between left and right frames each having vertical pillar members and horizontal reinforcement members, a tail frame that is connected to the front frame by the intermediate jack and has an open top so that the pipe can be installed, a plurality of front messels installed in the vertical direction on both the left and right sides of the front frame, press-fit jacks installed corresponding to each of the plurality of front messels and for moving the front messels in the front and rear directions, a plurality of bottom messels installed horizontally on the bottom of the front frame and capable of protruding from the front bottom of the front frame, bottom jacks installed corresponding to each of the plurality of bottom messels and for moving the bottom messels in the front and rear directions, and the tail frame. The system comprises a plurality of tail meshes provided vertically on both the left and right sides, a rope-like member formed in a shape extending in the longitudinal direction and having its ends connected to the tail frame, and a through-winding rope-like member extending in the longitudinal direction and having at least one end formed in a loop shape, the through-winding rope-like member being wound at least once around a pipe connection jig attached to an existing pipe that is a pipe installed at the other end and a pipe connection jig attached to a new pipe that is a newly installed pipe connected behind the existing pipe at the other end, and the other end being inserted and passed through the loop-shaped member at one end, and the rope-like member being connected to the other end of the through-winding rope-like member that has been inserted and passed through the loop-shaped member at one end, and when the tail frame is moved forward, the tensile force of the rope-like member increases, so that the existing pipe installed at the other end and the newly installed new pipe do not separate even when the tail frame is moved forward.

[0012] According to the present invention, the rope-like member is connected to the other end of the through-wound rope-like member that is inserted through the loop at one end. Therefore, even if the soil and sand below the tail frame are dragged and moved by the tail frame as the tail frame moves forward, the tensile force of the rope-like member can be increased while the rope-like member is connected to the tail frame, so that the existing pipe installed ahead and the newly installed new pipe do not separate.

[0013] A fourth aspect of the present invention is a cut-and-cover self-propelled shield pipe joining device that has an intermediate jack connected between a front frame and a tail frame and is used to join pipes that are installed continuously, and that includes a front frame with struts arranged longitudinally between left and right frames that have vertical pillars and horizontal reinforcements, a tail frame that is connected to the front frame with the intermediate jack and has an open top so that the pipe can be installed, a plurality of front messels installed vertically on both the left and right sides of the front frame, a press-in jack that is installed corresponding to each of the plurality of front messels and moves the front messels in the front and rear directions, a plurality of bottom messels installed horizontally on the bottom of the front frame and that can protrude from the front bottom of the front frame, a bottom jack that is installed corresponding to each of the plurality of bottom messels and moves the bottom messels in the front and rear directions, and a plurality of tail messels installed vertically on both the left and right sides of the tail frame. and a rope-like member formed in a shape extending in the longitudinal direction, both ends of which are connected to the tail frame, wherein the rope-like member is wrapped around a pipe connection jig attached to an existing pipe culvert, which is a pipe culvert installed at the other end, from rear to front, and then engaged therewith, and then wrapped around a pipe connection jig attached to a new pipe culvert, which is a newly installed pipe culvert connected to the rear of the existing pipe culvert, from front to rear, and then engaged therewith, and then wrapped around a pipe connection jig attached to the existing pipe culvert, from rear to front, and then engaged therewith. The pipe connection jig in the existing pipe ahead and the pipe connection jig in the new pipe ahead are wound at least once around the tail frame so that they can be wrapped around and engaged in the direction of the tail frame, and then connected to the tail frame.When the tail frame is moved forward in the forward direction with both ends of the rope-like member connected to the tail frame, the tensile force of the rope-like member increases, so that the existing pipe ahead and the newly installed new pipe ahead cannot be separated even when the tail frame is moved forward in the forward direction.

[0014] According to the present invention, the rope-like member is wrapped around and engaged with a pipe connection jig attached to the existing pipe ahead, then wrapped around and engaged with a pipe connection jig attached to a new pipe connected behind the existing pipe ahead, and then wrapped around and engaged with a pipe connection jig attached to the existing pipe ahead, and then connected to the tail frame.Therefore, even if the soil below the tail frame is dragged and moved by the tail frame as the tail frame moves forward, the tensile force of the rope-like member can be increased with both ends of the rope-like member connected to the tail frame, so that the existing pipe ahead and the newly installed new pipe ahead will not separate.

[0015] The fifth aspect of the present invention is an open-cut self-propelled shield pipe joining device according to any one of the first to fourth aspects, characterized in that the rope-like member is a wire rope extending in the longitudinal direction.

[0016] According to the present invention, since the rope-like member is a wire rope extending in the longitudinal direction, the tensile force of the rope-like member can be easily increased by pulling the wire rope, which makes it possible to easily prevent the joint between the existing pipe installed ahead and the newly installed pipe from separating even when the tail frame moves forward.

[0017] The sixth aspect of the present invention is an open-cut self-propelled shield pipe joining device according to the fifth aspect, characterized in that the pipe connection jig has a rotating roller that rotates in the forward and backward directions, and the rope-shaped member wraps around and engages with the pipe connection jig via the rotating roller of the pipe connection jig.

[0018] According to the present invention, the rope-like member wraps around and engages with the pipe connection jig via the rotating roller of the pipe connection jig, allowing the rope-like member to smoothly tighten the pipe as the rotating roller rotates. This allows the tensile force of the rope-like member to increase quickly and smoothly, and the joint between the existing pipe located at the other end and the newly installed pipe to quickly and smoothly prevent separation.

[0019] The seventh aspect of the present invention is an open-cut self-propelled shield pipe joining device according to the sixth aspect, characterized in that it has a rope-like member tensioning device that is provided on the tail frame and can increase or decrease the tensile force of the rope-like member, and the rope-like member tensioning device can adjust the tensile force of the rope-like member by pulling the rope-like member.

[0020] According to the present invention, since a rope-like member tensioning device is provided that can increase or decrease the tension of the rope-like member, even if the tension of the rope-like member increases as the tail frame moves forward, the rope-like member tensioning device can adjust the tension of the rope-like member to a sufficient and appropriate level, and can adjust the tension to a level that will not break the rope-like member. This makes it possible to stably and reliably increase the tension of the sewer, and stably and reliably prevent the joint between the existing sewer ahead and the new sewer from separating.

[0021] The eighth aspect of the present invention is an open-cut self-propelled shield pipe joining device according to the seventh aspect, which comprises a tensile force measuring device that measures the tensile force of a rope-like member pulled by a rope-like member pulling device, and a tensile force display device that displays the tensile force of the rope-like member measured by the tensile force measuring device, and is characterized in that the rope-like member pulling device adjusts the tensile force of the rope-like member so that the tensile force of the rope-like member measured by the tensile force measuring device does not become at least a breaking tensile force.

[0022] According to the present invention, the tensile force of the rope-like member measured by the tensile force measuring device is displayed on the tensile force display device, so that the worker can adjust the tensile force of the rope-like member to a sufficient and appropriate tensile force while watching the tensile force of the rope-like member measured by the tensile force measuring device displayed on the tensile force display device, and can adjust the tensile force of the rope-like member so that the tensile force of the rope-like member does not become at least a breaking tensile force, thereby stably and reliably tightening the sewer. This makes it possible to stably and reliably increase the tensile force of the sewer, and stably and reliably prevent the joint between the existing sewer and the new sewer from separating. [Effects of the Invention]

[0023] According to the present invention, even when a new pipe is buried and installed underground where no pipe has been buried before, it is possible to reliably prevent the connection between the existing pipe located at the other end and the new pipe to be installed from separating. [Brief explanation of the drawings]

[0024] [Figure 1] 1 is a schematic diagram showing the construction status of a Messel shield pipe joining device according to an embodiment of the present invention. FIG. [Figure 2] FIG. 2 is a perspective view of the Messel shield pipe joining device. [Figure 3] FIG. 2 is a plan view of the Messel shield pipe joining device. [Figure 4] 1A is a front view of the Messel shield pipe joining device, and FIG. 1B is a rear view of the Messel shield pipe joining device. [Figure 5] This is a cross-sectional view taken along the line AA in FIG. 4(a). [Figure 6] 1A is a diagram showing a wire rope tensioning device provided in front of the tail frame of the Messel shield pipe joining device, (b) is a diagram showing an operation using the wire rope tensioning device of the Messel shield pipe joining device, and (c) is a front perspective view showing the middle roller on the back side of the wire rope tensioning device of the Messel shield pipe joining device. [Figure 7]1A is a diagram showing a control unit provided with an operation lever and an operation remote control for a wire rope tensioning device used in the Messel shield pipe joining device, and FIG. 1B is a front view of the operation remote control for the wire rope tensioning device used in the Messel shield pipe joining device. [Figure 8] FIG. 2 is a diagram showing a wire rope used in the Messel shield pipe joining device. [Figure 9] FIG. 2 is a diagram showing a tensile force measuring device to which a wire rope used in the Messel shield pipe joining device is attached. [Figure 10] 1A and 1B are diagrams showing a sewer pipe used in the Messel shield pipe joining device, respectively, and a state in which a plurality of sewer pipes used in the Messel shield pipe joining device are connected. [Figure 11] 1A and 1B are a side view and a top view, respectively, of a pipe connection jig used in the Messel shield pipe joining device, respectively; [Figure 12] 10 is a diagram showing the state in which a pipe connection jig used in the Messel shield pipe joining device is installed in a sewer pipe. FIG. [Figure 13] FIG. 10 is a diagram showing a method for connecting the Messel Shield pipe joining device and a sewer pipe (pipe joining jig) with a wire rope. [Figure 14] 1 is a flowchart of a Messel shield pipe joining method using a Messel shield pipe joining device according to an embodiment of the present invention. [Figure 15] 1A is a side view of a pipe connecting jig equipped with a rotating roller according to a first modified example of the present invention, FIG. 1B is a top view of the pipe connecting jig equipped with the rotating roller, and FIG. 1C is a diagram showing a method of connecting a wire rope to the pipe connecting jig equipped with the rotating roller. [Figure 16](a) A diagram showing a state in which a sewer pipe (pipe connection jig) is wound with a winding wire rope of a Messel shield pipe joining device in Modification 4 of the present invention. (b) A diagram showing a method of connecting the same Messel shield pipe joining device and the winding wire rope with a sewer pipe (pipe connection jig) wound around it to the wire rope. [Figure 17] (a) A diagram showing a state in which a sewer pipe (pipe connection jig) is wound with a through-winding wire rope of a Messel shield pipe joining device in Modification 5 of the present invention. (b) A diagram showing a method of connecting the same Messel shield pipe joining device and the through-winding wire rope wound around a sewer pipe (pipe connection jig) and the wire rope. [Figure 18] FIG. 1 is a side view showing a conventional pipe transport cart carrying pipes and about to enter for joining. DETAILED DESCRIPTION OF THE INVENTION

[0025] A Messel shield pipe joining device according to one embodiment of the present invention will be described with reference to the drawings. This Messel shield pipe joining device is used in the Messel shield pipe joining method (open-cut self-propelled shield pipe joining method) described below. Here, FIG. 1 is a schematic diagram showing the construction status of the Messel shield pipe joining device according to one embodiment of the present invention. Note that this embodiment will be described for the case of laying a sewer pipe 2, but it is not limited to a sewer pipe 2, and other "pipes" such as "storm water pipes," "electric power pipes," "gas pipes," and "communication pipes" may also be used. In this case, the term "sewer pipe" described below will be read as "pipe." In addition, the following describes the case of laying a sewer pipe 2, but in consideration of the consistency of the names in the claims, for example, in the "Messel shield pipe joining device 1," "Messel shield pipe joining method," "new pipe installation process," and "pipe joining process," the term "pipe" will be used instead of "sewer pipe." Here, the sewer pipe 2 is a pipe that is buried under a road and used for a sewer system, a storm sewer, or the like. In addition, in this embodiment, the device will be described as a Messel shield pipe joining device (Messel shield pipe joining method), but this is not limited to being used with a "Messel shield machine," so it may also be called an open-cut self-propelled shield pipe joining device (open-cut self-propelled shield pipe joining method).

[0026] As shown in Figure 1, a sewer pipe 2 is laid and buried underground using a self-propelled Messel shield pipe joining device 1. Here, the Messel shield pipe joining method involves excavating the ground, compacting the bottom of the excavated ground, and then using the self-propelled Messel shield pipe joining device 1 to lay a pipe such as the sewer pipe 2 on the compacted ground while tightening the joints of the sewer pipe 2 so that they do not come apart. After the sewer pipe 2 is laid, the excavated ground is filled in and returned to its original state.

[0027] Next, a Messel shield pipe joining device for use in a Messel shield pipe joining method according to one embodiment of the present invention will be described with reference to Figures 2 to 5 (mainly Figures 3 and 5). Here, Figure 2 is a perspective view of the Messel shield pipe joining device according to one embodiment of the present invention, Figure 3 is a plan view of the Messel shield pipe joining device, Figure 4(a) is a front view of the Messel shield pipe joining device, Figure 4(b) is a rear view of the Messel shield pipe joining device, and Figure 5 is a cross-sectional view taken along line AA in Figure 4(a).

[0028] The messel shield pipe joining device 1 has a rigid front frame 10 and a tail frame 20, with an intermediate jack 30 connected between the front frame 10 and the tail frame 20 (see FIG. 5). The front frame 10 has a strut 13 arranged longitudinally between left and right frames 4 integrally formed from vertical pillars 11 and horizontal reinforcements 12. A horizontal beam 21 extending forward of the tail frame 20 rests on a support beam 14 extending rearward of the front frame 10, preventing the tail frame 20 from sinking. A front messel 40 and a tail messel 41 are slidably arranged on both sides of the front frame 10 and the tail frame 20, and are connected between the front messel 40 and the tail messel 41 by pins. A plurality of front messels 40 are provided on both the left and right sides of the front frame 10, extending in the vertical direction, and a plurality of tail messels 41 are provided on both the left and right sides of the tail frame 20, extending in the vertical direction. The front frame 10 and each front messel 40 are connected by press-fit jacks 15. These press-fit jacks 15 are provided corresponding to each of the multiple front messels 40, and can move the front messels 40 in the fore-and-aft direction. In addition, a bottom messel 17 is slidably disposed on the bottom of the front frame 10 via bottom jacks 16. A plurality of bottom messels 17 are provided laterally on the bottom of the front frame 10, and can protrude from the front bottom of the front frame 10. In addition, a bottom jack 16 is provided corresponding to each of the multiple bottom messels 17, and can move the bottom messel 17 in the fore-and-aft direction. In addition, a sled 22 is disposed on the bottom of the tail frame 20. Then, by operating the press-in jack 15, the front mesh 40 is advanced in the excavation direction, by operating the bottom jack 16, the bottom mesh 17 is advanced in the excavation direction, and by contracting the intermediate jack 30, the tail frame 20 is pulled toward the front frame 10. The press-in jack 15, bottom jack 16, and intermediate jack 30 are controlled by a control unit 18 mounted on the top of the front frame 10.

[0029] The tail frame 20 has a tail messel 41 supported on a frame body 25 integrally formed from vertical pillars 23 and horizontal reinforcements 24. Planar U-shaped struts 26 are arranged in multiple stages in front of the frame body 25 to match the horizontal reinforcements 24, and reinforcements 28 are provided at the joints between the struts 26 and the horizontal reinforcements 24. A hanging space 27 for hanging the sewer pipe 2 is formed between the opposing frame bodies 25 (see FIG. 3). The hanging space 27 is open at the top and rear. The sewer pipe 2 is installed through the hanging space 27, which is open at the top of the tail frame 20. A wire rope tensioning device 51, a wire rope one-end locking length adjustment unit 52a, and a wire rope other-end locking unit 52b are provided at the front of the tail frame 20. In this embodiment, the wire rope tensioning device 51, the wire rope one end locking length adjustment unit 52a and the wire rope other end locking unit 52b are provided at a front position of the tail frame 20, but this is not limited to this and they may be provided at an intermediate position or a rear position of the tail frame 20, or at any position on the tail frame 20.

[0030] The wire rope tensioning device 51 is provided at a position forward of the tail frame 20 and can increase or decrease the tension of the wire rope 19 by pulling the wire rope 19. Specifically, the wire rope tensioning device 51 has a tensioning cylinder 51a and a tensioning piston 51b (see FIG. 6). The tensioning piston 51b in the tensioning cylinder 51a can be hydraulically operated to extend or retract the tensioning piston 51b in the vertical direction from within the tensioning cylinder 51a. A wire rope tensioning device upper left roller 51c and a wire rope tensioning device upper right roller 51d (see FIG. 6(a)) are provided at the upper end of the wire rope tensioning device 51. A wire rope tensioning device rear middle roller 51e (see FIG. 6(c)) is provided at the rear side of the wire rope tensioning device 51. Furthermore, two wire rope engagement portions 51f and 51g are provided at the lower side of the wire rope tensioning device 51. The wire rope tensioning device 51 can move a tensioning piston 51b up and down by operating an operating lever 53 or an operating remote control 54 (described later). A wire rope one-end locking length adjustment unit 52a and a wire rope other-end locking unit 52b are provided near (next to) the wire rope tensioning device 51. The wire rope one-end locking length adjustment unit 52a and the wire rope other-end locking unit 52b will be described later. While the wire rope 19 is used in this embodiment, this is not limiting, and a "rope-like member" other than a wire rope, such as a "chain rope" or a "belt sling," may also be used. In this case, the term "wire rope" described below should be read as a "rope-like member." With this replacement, for example, a "wire rope tensioning device" can be read as a "rope-like member tensioning device," a "wire rope one-end locking length adjustment unit" can be read as a "rope-like member one-end locking length adjustment unit," and a "wire rope other-end locking unit" can be read as a "rope-like member other-end locking unit."Here, Figure 6(a) is a diagram showing a wire rope tensioning device installed in front of the tail frame of a Messel shield pipe joining device in one embodiment of the present invention, Figure 6(b) is a diagram showing an operation using the wire rope tensioning device of the Messel shield pipe joining device, and Figure 6(c) is a front oblique view showing the middle roller on the back side of the wire rope tensioning device of the Messel shield pipe joining device.

[0031] In this way, the tension of the wire rope 19 can be increased or decreased using the wire rope tensioning device 51, so that the tension of the wire rope 19 pulled by the wire rope tensioning device 51 can be adjusted to a sufficient and appropriate tension, and can be adjusted to a tension that will not break. This allows the tension of the sewer pipe 2 to be stably and reliably increased, and the joint between the existing sewer pipe 2y(2) and the new sewer pipe 2x(2) to be stably and reliably prevented from separating. This will be described in detail later.

[0032] The operating lever 53 is installed in front of the control unit 18 mounted on the upper part of the front frame 10 (see FIG. 2). An operator can move the tension piston 51b of the wire rope tensioning device 51 up and down by operating the operating lever 53 (see FIGS. 6 and 7). An operating remote control 54 is removably provided in a remote control box 54a on the front side of the control unit 18 mounted on the upper part of the front frame 10 (see FIGS. 2 and 7(a)). An operator can remove the operating remote control 54 from the remote control box 54a and operate the operating remote control 54 to move the tension piston 51b of the wire rope tensioning device 51 up and down (see FIGS. 6 and 7). Here, FIG. 7(a) is a diagram showing a control unit provided with the operating lever and operating remote control of a wire rope tensioning device used in a Messel shield pipe splicing device according to one embodiment of the present invention, and FIG. 7(b) is a front view of the operating remote control of the wire rope tensioning device used in the Messel shield pipe splicing device. In this embodiment, the pulling piston 51b of the wire rope pulling device 51 is moved up and down using the operating lever 53 and the operating remote control 54, but this is not limited to this. The pulling piston 51b of the wire rope pulling device 51 may be moved up and down using either the operating lever 53 or the operating remote control 54, or the pulling piston 51b of the wire rope pulling device 51 may be moved up and down using an operating means such as the operating lever 53, the operating remote control 54, or an operating button.

[0033] Next, the wire rope 19 used in the Messel shield pipe joining device 1 will be described with reference to Fig. 8. Here, Fig. 8 is a diagram showing the wire rope used in the Messel shield pipe joining device in one embodiment of the present invention.

[0034] The wire rope 19 has a generally circular cross section and extends longitudinally, with both ends connected to the tail frame 20. Specifically, a loop-shaped wire rope one-end loop portion 19a is formed at one end of the wire rope 19, and a loop-shaped wire rope other-end loop portion 19b is formed at the other end of the wire rope 19 (see FIG. 8 ). One end of the wire rope 19 is attached to a wire rope one-end locking length adjustment portion 52a via a guide roller 51h provided in front of the wire rope tensioning device 51. The wire rope 19 is also attached to a wire rope other-end locking portion 52b provided in a forward position of the tail frame 20 via a tension force measuring device 56, which will be described later. As described above, the wire rope 19 is used in this embodiment, but this is not a limitation. A "rope-like member" such as a "chain rope" or a "belt sling" may also be used. Furthermore, although the wire rope tensioning device 51 is provided in this embodiment, this is not a limitation, and the wire rope tensioning device 51 may not be provided. In this case, by providing a spring or an expandable extension part on the longitudinally extending wire rope 19 or on the middle or one end of the wire rope 19, the tensile load of the wire rope 19 can be set to be less than the breaking load of the wire rope 19 without providing a wire rope tensioning device 51. In this way, by using a spring or an expandable extension part on the longitudinally extending wire rope 19 or on the middle or one end of the wire rope 19, the tensile force of the wire rope 19 can be easily increased by pulling the wire rope 19. As a result, even if the tail frame 20 moves forward, the tensile load of the wire rope 19 becomes equal to or greater than the breaking load, and the joint between the sewer pipe 2 installed further ahead (the existing sewer pipe 2y on the other side) and the newly installed new sewer pipe 2x(2) can be easily prevented from separating without worrying about the wire rope 19 breaking.

[0035] The wire rope one end locking length adjustment unit 52a is composed of an "electric drum roller." The wire rope one end loop portion 19a of the wire rope 19 is fixedly attached to the wire rope one end locking length adjustment unit 52a, and the wire rope 19 is attached to the wire rope other end locking unit 52b in front of the tail frame 20 via a tensile force measuring device 56 (see FIG. 9). That is, in this embodiment, the tensile force measuring device 56 (see FIG. 9) is attached between the wire rope one end loop portion 19a of the wire rope 19 and the wire rope other end loop portion 19b of the wire rope 19. Specifically, the wire rope other end loop portion 19b of the wire rope 19 is connected to a measuring device one end opening 56a of a tensile force measuring device 56 (see FIG. 9) by a wire shackle 59, and the measuring device other end opening 56b of the tensile force measuring device 56 (see FIG. 9) is detachably attached to the wire rope other end locking portion 52b installed in front of the tail frame 20 via the wire rope 19 by the wire shackle 59. In this way, the wire rope 19 is attached to the wire rope other end locking portion 52b in front of the tail frame 20 via the tensile force measuring device 56. That is, when viewed from the front of the tail frame 20, the wire rope other end locking portion 52b formed in front of the tail frame 20 is connected in the following order: wire rope other end locking portion 52b in front of the tail frame 20 → wire shackle 59 → wire rope 19 → wire shackle 59 → (measuring device other end opening 56b) tensile force measuring device 56 (measuring device one end opening 56a) → wire shackle 59 → wire rope 19, and the wire rope 19 is attached to the front of the tail frame 20. Note that in this embodiment, the tensile force measuring device 56 is used, but this is not limiting, and the tensile force measuring device 56 may not be provided in cases where the wire rope 19 does not exceed its breaking load or where an operator can adjust the tensile force (tensile load) of the wire rope 19 based on the movement distance of the tail frame 20, etc.Here, "both ends of the wire rope 19 are connected to the tail frame 20" means that the wire rope 19, which is connected in the order of "wire rope 19 → tensile force measuring device 56 → wire rope 19," is considered to be a single wire rope 19, and its ends are connected to the tail frame 20. In other words, "both ends of the wire rope 19 are connected to the tail frame 20" means that, regardless of the presence or absence of the tensile force measuring device 56, the wire rope 19 in the order of "wire rope 19" → tensile force measuring device 56 → "wire rope 19" is considered to be a single wire rope 19, and its ends are connected to the tail frame 20. This tensile force measuring device 56 is an instrument that measures the tensile force of the wire rope 19 pulled by the wire rope tensioning device 51. Here, in this embodiment, a "tension-type load cell (tension-type load cell TLP-NB) manufactured by Tokyo Measuring Instruments Research Institute Co., Ltd." is used as the tensile force measuring device 56. The wire rope tension value of the tension measuring device 56 is displayed on a tension display device 57 (see FIGS. 4(a) and 7(a)) installed in the control unit 18 mounted on the top of the front frame 10. The tension display device 57 is an instrument that displays the tension of the wire rope 19 measured by the tension measuring device 56. In this embodiment, a "tension load cell (tension load meter TLP-NB) manufactured by Tokyo Measuring Instruments Research Institute Co., Ltd." is used as the tension measuring device 56, but this is not limiting and any other "tension measuring device" may be used as long as it can measure the tension (tensile load) of the wire rope 19. In this embodiment, the wire rope tension value of the tension measuring device 56 is displayed on the tension display device 57 (see FIGS. 4(a) and 7(a)) installed in the control unit 18, but this is not limiting and the wire rope tension value of the tension measuring device 56 may be displayed on another tension display device (not shown). FIG. 9 shows a tensile force measuring device to which a wire rope used in the Messel shield pipe joining device is attached.In this embodiment, the wire rope one end locking length adjustment unit 52a is constructed from an electric drum roller, but this is not limited to this, and anything other than an electric drum roller may be used as long as it can shorten the working length of the wire rope 19, such as a ``wire rope winding device'' that winds the wire rope 19 or a ``wire rope pulling device'' that pulls the wire rope 19.Furthermore, the wire rope 19 and the tensile force measuring device 56, and the wire rope 19 and the wire rope other end locking unit 52b are connected by a wire shackle 59, but this is not limited to this, and they may be connected using a member connecting means other than a wire shackle 59.

[0036] Next, a sewer pipe 2 used in the Messel shield pipe joining device 1 will be described with reference to Fig. 10. Fig. 10(a) is a diagram showing a sewer pipe used in the Messel shield pipe joining device in one embodiment of the present invention, and Fig. 10(b) is a diagram showing a state in which a plurality of the same sewer pipes are connected.

[0037] The sewer pipe 2 is formed in a cylindrical shape extending in the axial direction (see FIG. 10 ). In this embodiment, a fiber-reinforced plastic composite pipe (FRPM pipe) manufactured by Sekisui Chemical Co., Ltd. is used as the sewer pipe 2. One end of this sewer pipe 2 is formed with a socket 2a that is larger in diameter than a pipe main body 2c having a constant inner and outer diameter, and the other end of the sewer pipe 2 is formed with an insertion port 2b having the same diameter as the pipe main body 2c having a constant inner and outer diameter. When connecting multiple sewer pipes 2, the insertion port 2b of one sewer pipe 2 is inserted into the insertion port 2a of another sewer pipe 2. The material and manufacturing method of this fiber-reinforced plastic composite pipe (FRPM pipe) are described in JP 2023-018923 A, and therefore a detailed description thereof will be omitted. In this embodiment, a fiber-reinforced plastic composite pipe (FRPM pipe) manufactured by Sekisui Chemical Co., Ltd. is used as the sewer pipe 2. However, this is not limiting, and sewer pipes other than fiber-reinforced plastic composite pipes (FRPM pipes) manufactured by Sekisui Chemical Co., Ltd. may also be used. Also, as described above, although the sewer pipe 2 is used in this embodiment, it is not limited to the sewer pipe 2. Other "pipes" such as "storm water pipes," "electric power pipes," "gas pipes," and "communication pipes" may also be used. In this case, as described above, the term "sewer pipe" described below is replaced with "pipe." Also, while the following describes the installation of the sewer pipe 2, as described above, in consideration of the consistency of the names in the claims, for example, in the "Messel shield pipe joining method," "new pipe installation process," and "pipe joining process," the term "pipe" is used instead of "sewer pipe."

[0038] A pipe connecting jig 55 is installed at the end (front end or rear end) of the sewer pipe 2. The wire rope 19 passes between the pipe connecting jigs 55 installed on the preceding sewer pipe 2 (2y) and the succeeding sewer pipe 2 (2x), and is thereby wound around and locked to the outer circumferential surfaces of the pipe connecting jigs 55 installed on the sewer pipe 2 and the adjacent sewer pipe 2. In this embodiment, the pipe connecting jig described in the prior art of Japanese Patent Laid-Open No. 9-079426 is used as the pipe connecting jig 55. Note that, although the pipe connecting jig described in the prior art of Japanese Patent Laid-Open No. 9-079426 is used as the pipe connecting jig 55 in this embodiment, the invention is not limited thereto, and any other pipe connecting jig may be used as long as it can wind the wire rope 19 around the pipe connecting jig to prevent the sewer pipe 2 from separating from the adjacent sewer pipe 2. In this embodiment, a pipe connecting jig 55 is installed on each of the sewer pipe 2 and the adjacent sewer pipe 2, and the wire rope 19 is wound around the outer periphery of the pipe connecting jig 55. However, this is not limiting, and a pipe connecting jig 55 may be installed on each of the sewer pipe 2 and the preceding sewer pipe 2 (such as the sewer pipe 2 two pipes away or the sewer pipe 2 three pipes away), and the wire rope 19 may be wound around the outer periphery of the pipe connecting jig 55. Here, Fig. 11(a) is a side view of a pipe connecting jig used in a Messel shield pipe connecting device according to one embodiment of the present invention, Fig. 11(b) is a top view of the pipe connecting jig used in the Messel shield pipe connecting device, and Fig. 12 is a diagram showing the pipe connecting jig used in the Messel shield pipe connecting device installed on a sewer pipe.

[0039] Pipe connection jig 55 has a straight connecting rod 55a and locking plates 55b attached to each end of connecting rod 55a. The outer edge of each locking plate 55b is locked to the end face of pipe body 2c in socket 2a of subsequent sewer pipe 2 (2x) and to the end face of insertion port 2b of the preceding sewer pipe 2 when that subsequent sewer pipe 2 (2x) and the preceding sewer pipe 2 (2y) are joined. That is, when the insertion port 2b of the subsequent sewer pipe 2 is lightly inserted into the reception port 2a of the preceding sewer pipe 2, the outer edge of one pipe connection jig 55 is locked to the end face of insertion port 2b of the preceding sewer pipe 2, and the other pipe connection jig 55 is positioned on the end face of pipe body 2c in reception port 2a of that subsequent sewer pipe 2 (see dotted lines in FIG. 12 ). Here, one pipe connection jig 55 has the outer edge of its locking plate 55b locked to the end face of the insertion port 2b of the preceding sewer pipe 2. This is installed between the end face of the insertion port 2b of the preceding sewer pipe 2 and the end face of the pipe body 2c in the socket 2a of the sewer pipe 2 next to it. Wire rope 19 is then wound around the pipe connection jigs 55, and the pipe connection jigs 55 are pulled so as to move closer to each other. This allows each pipe connection jig 55 to move the preceding sewer pipe 2 (2y) and the following sewer pipe 2 (2x) closer to each other, and to insert the preceding sewer pipe 2 (2y) into the socket 2a of the following sewer pipe 2 so that they do not separate. Specific details will be described later. As described above, in this embodiment, a pipe connection jig 55 is installed on each of the sewer pipe 2 and the adjacent sewer pipe 2, but this is not limited to this, and the pipe connection jig 55 may also be installed on each of the sewer pipe 2 and the preceding sewer pipe 2 (such as the sewer pipe 2 two or three adjacent to the subsequent sewer pipe 2 (2x)).

[0040] Next, a method for connecting the Messel shield pipe joining device 1 and the sewer pipe 2 (pipe joining jig 55) with a wire rope 19 will be described with reference to Fig. 13. Here, Fig. 13 is a diagram showing a method for connecting the Messel shield pipe joining device and the sewer pipe (pipe joining jig) with a wire rope in one embodiment of the present invention.

[0041] The wire rope 19 is passed through a guide roller 51h and is hung on a wire rope tensioning device upper left roller 51c (see FIG. 6(a)) at the top of the wire rope tensioning device 51, and then is hooked onto a wire rope tensioning device rear middle roller 51e (see FIG. 6(c)) on the back side of the wire rope tensioning device 51, and then is hung on a wire rope tensioning device upper right roller 51d (see FIG. 6(a)) at the top of the wire rope tensioning device 51. The wire rope one end loop portion 19a of the wire rope 19 is then hooked from the wire rope tensioning device upper right roller 51d (see FIG. 6(a)) at the top of the wire rope tensioning device 51 to two wire rope hooking portions 51f, 51g at the lower side of the wire rope tensioning device 51 in an eight-shape, and then attached to a wire rope one end hooking length adjustment portion 52a provided beside the wire rope tensioning device 51 (in front of the tail frame 20). Here, the wire rope one end locking length adjusting section 52a is configured by an "electric drum roller" as described above, and the wire rope 19 is wound up by the wire rope one end locking length adjusting section 52a.

[0042] In addition, the other end loop portion 19b of the wire rope 19 is wrapped around the front pipe connecting jig 55y (55) attached to the tip of the front existing sewer pipe 2y (2) installed at the front end and then wrapped around it from rear to front and then wrapped around it from front to rear and then wrapped around it to the new pipe connecting jig 55x (55) attached to the rear end of the newly installed new sewer pipe 2x (2) joined to the front existing sewer pipe 2y (2) and then wrapped around it from front to front and then wrapped around it to the front pipe connecting jig 55y (55) attached to the tip of the front existing sewer pipe 2y (2) and then wrapped around it from rear to front and then wrapped around it to the rear and then wrapped around it, and then the other end loop portion 19b of the wire rope 19 is connected to the wire rope other end engaging portion 52b in front of the tail frame 20 via the tensile force measuring device 56. Here, in this embodiment, in order to clarify the names of the components, the sewer pipe 2 installed at the other end is referred to as the existing sewer pipe 2y(2) at the other end, and the newly installed (rear) sewer pipe 2 joined to the existing sewer pipe 2y(2) is referred to as the new sewer pipe 2x(2). However, the existing sewer pipe 2y(2) at the other end and the new sewer pipe 2x(2) are both sewer pipes 2, and the pipe connection jig 55 attached to the tip of the existing sewer pipe 2y(2) is referred to as the pipe connection jig 55y(55) at the other end, and the pipe connection jig 55 attached to the rear end of the new sewer pipe 2x(2) is referred to as the new pipe connection jig 55x(55). However, the pipe connection jig 55y(55) and the new pipe connection jig 55x(55) are both pipe connection jig 55. In addition, in this embodiment, the wire rope 19 is wound once around the front pipe connecting jig 55y(55) of the front existing sewer pipe 2y(2) and the new pipe connecting jig 55x(55) of the new sewer pipe 2x(2) before being connected to the tail frame 20, but this is not limited to this, and the wire rope 19 may be wound at least once, such as two or three times, around the front pipe connecting jig 55y(55) of the front existing sewer pipe 2y(2) and the new pipe connecting jig 55x(55) of the new sewer pipe 2x(2) before being connected to the tail frame 20.In addition, when the wire rope 19 is arranged from the wire rope pulling device 51 to the existing sewer pipe 2y(2) at the other end of the existing sewer pipe 2y(2) → the new pipe connection jig 55x(55) of the new sewer pipe 2x(2) → the other end locking portion 52b of the wire rope, and the wire rope 19 moving back and forth is connected to the rear part of the new pipe connection jig 55x(55) of the new sewer pipe 2x(2), it is also considered to be wound once.

[0043] In this way, the wire rope 19 has its one end loop portion 19a attached to the wire rope one end locking length adjustment portion 52a provided in front of the tail frame 20, and is then wound from there via the wire rope tensioning device 51 around the front pipe connecting jig 55y(55) of the front existing sewer pipe 2y(2) → the new pipe connecting jig 55x(55) of the new sewer pipe 2x(2) → the front pipe connecting jig 55y(55) of the front existing sewer pipe 2y(2) in this order, and then the wire rope other end loop portion 19b is attached to the wire rope other end locking portion 52b via the tensile force measuring device 56. That is, the other end of the wire rope 19 (the wire rope other end loop portion 19b) is attached to the wire rope other end locking portion 52b in front of the tail frame 20 via the tensile force measuring device 56. In this manner, the wire rope 19 is wound in the following order: front of the tail frame 20 → the preceding existing sewer pipe 2y(2) → the new sewer pipe 2x(2) → the preceding existing sewer pipe 2y(2) → the front of the tail frame 20, and the preceding existing sewer pipe 2y(2) and the new sewer pipe 2x(2) are wound with the wire rope 19. In this state, by moving the pulling piston 51b in the pulling cylinder 51a upward, the wire rope 19 is pulled so as to increase the tensile force of the wire rope 19. Specifically, this pulling piston 51b can pull the wire rope 19 in the rearward direction with a tensile force of 8 tons. In this manner, by moving the pulling piston 51b in the pulling cylinder 51a up and down, the wire rope 19 is extended or retracted 50 centimeters (25 centimeters × 2 (the amount of two pulling pistons 51b)) from the wire rope pulling device 51, thereby increasing or decreasing the tensile force of the wire rope 19.

[0044] Next, the construction procedure of the Messel shield pipe joining method using the Messel shield pipe joining device in one embodiment of the present invention will be described with reference to Figure 14. Figure 14 is a flowchart of the Messel shield pipe joining method using the Messel shield pipe joining device in one embodiment of the present invention. In this embodiment, the excavation step (S2) to the intermediate jack storing step (S5) have been carried out in advance, and the process starts from the point where the excavation hole has been formed.

[0045] First, in S1, a "new sewer installation process" is performed. In this new sewer installation process, a sewer pipe 2 is installed in an excavated hole. Specifically, the sewer pipe 2 is suspended by a crane 58, and a new sewer pipe 2 (new sewer pipe 2x) is installed in the tail frame 20 through an opening at the top of the tail frame 20 (see FIG. 1). Then, the process proceeds to S2. As described above, this embodiment describes the case where a sewer pipe 2 is installed. However, in consideration of consistency in the names of the claims, the "new sewer installation process" will be described using the term "pipe" rather than "sewer pipe." This also applies to the "Messel shield pipe joining method" and the "pipe joining process." Furthermore, this embodiment describes the case where a sewer pipe 2 is installed. However, when the "sewer pipe 2" is used as a "pipe," as described above, the term "sewer pipe" will be read as "pipe."

[0046] In S2, an "excavation process" is carried out. In this excavation process, an excavation opening (hole) is excavated using an excavator (backhoe) in order to bury the next sewer pipe 2 (underground buried structure). Then, the process proceeds to S3.

[0047] In S3, a "front messel natural ground penetration step" is carried out. In this front messel natural ground penetration step, the press-in jack 15 is operated to sequentially move the front messel 40 forward from above, and the front messel 40 is sequentially penetrated into the natural ground in front of it. Specifically, the left and right front messels 40, which are made up of four levels, are simultaneously moved forward from above, sequentially from the first level to the second level, the third level, and the fourth level, respectively. Here, as the front messel 40 moves forward, the tail messel 41, which is connected to the front messel 40 by a pin, also moves forward. Note that in this embodiment, the front messel 40 is moved forward from above, sequentially, but this is not limiting, and the front messel 40 may also be moved forward from below. Then, the process proceeds to S4.

[0048] In S4, the "bottom messel natural ground penetration process" is carried out. In this bottom messel natural ground penetration process, the bottom jack 16 is operated to move the bottom messel 17 forward sequentially from the left and right, and the bottom messel 17 is sequentially penetrated into the natural ground in front of it. Specifically, the left and right bottom messels 17, which consist of three pieces on the left and right, are simultaneously moved forward sequentially from the left and right ends of the bottom messel 17, from the first to the second to the third at each end. Then, the process proceeds to S5.

[0049] In S5, an "intermediate jack retraction process" is carried out. In this intermediate jack retraction process, the intermediate jack 30 between the front frame 10 and the tail frame 20 is retracted, thereby pulling the tail frame 20 toward the front frame 10. This tail frame 20 is set to move 50 centimeters when the intermediate jack 30 is retracted. Then, the process proceeds to S6.

[0050] In S6, it is determined whether adjustment of the tensile force (tensile load) of the wire rope 19 tightening the sewer pipe 2 (new sewer pipe 2x) joined to the sewer pipe 2 installed at the other end (existing sewer pipe 2y) is necessary. In this case, the tension (tensile load) of the wire rope 19 tightening the sewer pipe 2 (existing sewer pipe 2y at the other end) and the sewer pipe 2 (new sewer pipe 2x) is increased and tightened in the pipe tightening step (S15) described below. Therefore, if the pipe tightening step (S15) has not yet been performed, i.e., if a sewer pipe 2 has not already been installed at the other end of the sewer pipe 2 (existing sewer pipe 2y at the other end), or if the tail frame 20 moves forward in the intermediate jack contraction step (S5), the tension of the wire rope 19 increases. However, even in this case, if the tension of the wire rope 19 is a sufficient and appropriate tension, there is no need to adjust the tension (tensile load) of the wire rope 19 tightening the sewer pipe 2 (existing sewer pipe 2y at the other end) and the sewer pipe 2 (new sewer pipe 2x), and therefore the answer in S6 is "No." If the answer to S6 is "Yes," the process proceeds to S7, and if the answer to S6 is "No," the process proceeds to S10.

[0051] In S7, a "rope-like member tensile force adjusting step" is performed. In this rope-like member tensile force adjusting step, the tensile force (tensile load) of the wire rope 19 tightening the sewer pipe 2 (new sewer pipe 2x) joined to the sewer pipe 2 (existing sewer pipe 2y) installed further ahead in the sewer pipe tightening step (S14) described later is adjusted. The forward movement of the tail frame 20 increases the tensile force of the wire rope 19. Therefore, this rope-like member tensile force adjusting step is performed when the tensile force of the wire rope 19 is equal to or greater than its breaking load or is not appropriate. Specifically, the tension piston 51b in the tension cylinder 51a is moved downward using the operation lever 53 or the operation remote controller 54, thereby reducing the tensile force of the wire rope 19. In this embodiment, the "rope-like member tensile force adjusting step" is performed after the "intermediate jack retracting step." However, this is not limiting, and the "rope-like member tensile force adjusting step" may be performed while the "intermediate jack retracting step" is being performed. That is, when the tail frame 20 is moved forward in the "intermediate jack retraction step" and the tensile force of the wire rope 19 exceeds the appropriate tensile force range, the "rope-like member tensile force adjustment step" may be performed to move the tensioning piston 51b in the tensioning cylinder 51a downward to reduce the tensile force of the wire rope 19. In this way, by performing the "rope-like member tensile force adjustment step" every time the tensile force of the wire rope 19 exceeds the appropriate tensile force range, and by moving the tensioning piston 51b in the tensioning cylinder 51a downward to reduce the tensile force of the wire rope 19, the tensile force of the wire rope 19 can be made more appropriate. Then, the process proceeds to S8.

[0052] In S8, it is determined whether or not adjustment of the length of the wire rope 19 is necessary. This length adjustment of the wire rope 19 is performed by moving the tail frame 20 forward by 50 centimeters (predetermined length) until the tension piston 51b in the tension cylinder 51a is moved to the lower set position in the rope tension adjustment step (S7). Since steps S2 (excavation step) to S5 (intermediate jack contraction step) are further performed from the point where the tail frame 20 has moved forward 50 centimeters until the next 250 centimeters (predetermined length) of sewer pipe 2 (new sewer pipe 2x) is installed, the length of the wire rope 19 needs to be increased by the amount of forward movement of the tail frame 20. Furthermore, when the tail frame 20 moves forward 250 centimeters, the sewer pipe 2 (new sewer pipe 2x) is installed in the subsequent new sewer installation process (S11), and the pipe connection jig 55 is attached in the pipe connection jig attachment process (S13). At this time, however, it is necessary to loosen the tension on the wire rope 19 in order to remove the pipe connection jig 55 attached to the end (insertion port 2b) of the previous (previous) sewer pipe 2 (existing sewer pipe 2y). In this way, if it is desired to further loosen the tension on the wire rope 19 after the pulling piston 51b in the pulling cylinder 51a has moved to the lower set position in the rope tension adjustment process (S7), a "YES" determination is made in S8. Then, the process proceeds to S9.

[0053] In S9, a "rope length adjustment process" is performed. In this rope length adjustment process, the length of wire rope 19 is increased by a predetermined length by rotating wire rope one-end locking length adjustment unit 52a (electric drum roller). The predetermined length by which wire rope 19 is increased varies depending on the purpose for which wire rope 19 is to be increased. As a result, after pulling piston 51b in pulling cylinder 51a has moved to the lower set position, the pipe connection jig 55 attached to the outlet 2b of the far (second-far) far-end existing sewer pipe 2y is removed, and then the pipe connection jig 55 is attached to the outlet 2a of sewer pipe 2 (new sewer pipe 2x). Since wire rope 19 is loosened, wire rope other end loop portion 19b of wire rope 19 can be easily removed from wire rope other end locking portion 52b. Then, the process proceeds to S10.

[0054] In S10, it is determined whether it is necessary to install a sewer pipe 2 (new sewer pipe 2x). Since this sewer pipe 2 (new sewer pipe 2x) and the sewer pipe 2 (existing sewer pipe 2y) have a length of 250 cm (predetermined length), the tail frame 20, which moves every 50 cm (predetermined division length) in the intermediate jack contraction step (S5), moves 250 cm (five movements) to install the next sewer pipe 2 (new sewer pipe 2x). If the determination in S10 is "Yes," the process proceeds to S11, and if the determination is "No," the process proceeds to S17.

[0055] In S11, a "new sewer installation process" is carried out. In this new sewer installation process, as described above, the sewer pipe 2 (new sewer pipe 2x) is installed in the excavated hole. Specifically, the sewer pipe 2 is suspended by the crane 58, and the sewer pipe 2 (new sewer pipe 2x) to be newly installed in the tail frame 20 is installed through the opening at the top of the tail frame 20 (see FIG. 1). In this way, when the new sewer pipe 2 (new sewer pipe 2x) is installed, the sewer pipe 2 (new sewer pipe 2x) ahead of it that is connected to it becomes the sewer pipe 2 (front existing sewer pipe 2y). Then, the process proceeds to S12.

[0056] In S12, a "pipe joining process" is carried out. In this pipe joining process, the leading end of the sewer pipe 2 (new sewer pipe 2x) is joined to the trailing end of the sewer pipe 2 (front existing sewer pipe 2y). Specifically, when the sewer pipe 2 (new sewer pipe 2x) is lowered from a suspended state by the crane 58 in the new pipe installation process (S10), the leading end of the sewer pipe 2 (new sewer pipe 2x) is joined to the trailing end of the sewer pipe 2 (front existing sewer pipe 2y). Note that in this embodiment, the "new pipe installation process" and the "pipe joining process" are carried out separately, but this is not limiting and they may be carried out as a single process called a "new pipe installation and joining process." Then, the process proceeds to S13.

[0057] In S13, a "pipe connection jig attaching step" is carried out. In this pipe connection jig attaching step, pipe connection jig 55 is attached to sewer pipe 2 (new sewer pipe 2x). Specifically, the outer edge of locking plate 55b is abutted against the end face (see dotted line in FIG. 11) of socket 2a at the rear end of sewer pipe 2 (new sewer pipe 2x). Then, the process proceeds to S14. Here, if a sewer pipe 2 (existing sewer pipe 2y) has already been installed beyond sewer pipe 2 (new sewer pipe 2x), pipe connection jig 55 has been attached to sewer pipe 2 (existing sewer pipe 2y) in the previous pipe connection jig attaching step (S12). Furthermore, if a pipe connection jig 55 is attached to the end (insertion port 2b) of the sewer pipe 2 (previous existing sewer pipe 2y) further ahead (the one further ahead) than the sewer pipe 2 (existing sewer pipe 2y) (previous new sewer pipe 2x)) ahead of the sewer pipe 2 (new sewer pipe 2x) installed this time by the "new sewer pipe installation process", the pipe connection jig 55 at the end (insertion port 2b) of that sewer pipe 2 (previous existing sewer pipe 2y) is removed, and the pipe connection jig 55 is attached to the current sewer pipe 2 (new sewer pipe 2x). As described above, in this embodiment, the pipe connection jig 55 is installed on the sewer pipe 2 and the sewer pipe 2 adjacent thereto, but this is not limiting, and the pipe connection jig 55 may be installed on the sewer pipe 2 and the preceding sewer pipe 2 (such as the sewer pipe 2 two pipes away from the subsequent sewer pipe 2 (2x) or the sewer pipe 2 three pipes away from the subsequent sewer pipe 2 (2x)). Also, in this embodiment, the pipe connection jig attachment step (S13) is performed after the new sewer installation step (S10) is performed, but this is not limiting, and the pipe connection jig attachment step (S13) may be performed before the new sewer installation step (S10) is performed. That is, first, in the "pipe connection jig attachment process", a pipe connection jig 55 is attached to the end face of the receiving port 2a at the rear end of the sewer pipe 2 (new sewer pipe 2x), then, in the new sewer installation process (S11), the sewer pipe 2 (new sewer pipe 2x) with the pipe connection jig 55 attached is hung from a crane 58, and the sewer pipe 2 (new sewer pipe 2x) is installed inside the tail frame 20 through the opening at the top of the tail frame 20, and then, in the pipe joining process (S12), the tip of the sewer pipe 2 (new sewer pipe 2x) and the rear end of the sewer pipe 2 (existing sewer pipe 2y at the front) are joined.

[0058] In S14, a "rope-like member locking step" is carried out. In this rope-like member locking step, wire rope 19 is wound around pipe connection jig 55 attached to the tip of sewer pipe 2 (tip-side existing sewer pipe 2y) installed ahead, then wound around pipe connection jig 55 attached to the rear end of sewer pipe 2 (new sewer pipe 2x) joined to sewer pipe 2 (tip-side existing sewer pipe 2y), and then wound around pipe connection jig 55 attached to the tip of sewer pipe 2 (tip-side existing sewer pipe 2y) installed ahead, and then the other end of wire rope 19 is connected to tail frame 20. Specifically, in a state where the wire rope one end loop portion 19a at one end of the wire rope 19 is engaged with the wire rope one end engagement length adjustment portion 52a provided in front of the tail frame 20, the other end of the wire rope 19 is passed through the wire rope tensioning device 51 and wound around the pipe connection jig 55 attached to the tip of the sewer pipe 2 (existing sewer pipe 2y) installed at the other end, and then connected to the sewer pipe 2 (existing sewer pipe 2y). The wire rope 19 is then passed around a pipe connecting jig 55 attached to the rear end of the combined sewer pipe 2 (new sewer pipe 2x), and further passed around a pipe connecting jig 55 attached to the tip of the sewer pipe 2 (existing sewer pipe 2y) installed ahead, after which the wire rope other end loop portion 19b at the other end of the wire rope is attached to the wire rope other end locking portion 52b provided in front of the tail frame 20 with a wire shackle 59, and connected to the front of the tail frame 20. Here, in this embodiment, a tensile force measuring device 56 (see FIG. 9) is provided, and therefore, as described above, the wire rope 19 is attached to the wire rope other end locking portion 52b via the tensile force measuring device 56 (see FIG. 9), and connected to the front of the tail frame 20. As described above, in this embodiment, the wire rope 19 is wound once around the front pipe connecting jig 55y(55) of the front existing sewer pipe 2y(2) and the new pipe connecting jig 55x(55) of the new sewer pipe 2x(2) before being connected to the tail frame 20. However, this is not limiting, and the wire rope 19 may be wound at least once, such as two or three times, around the front pipe connecting jig 55y(55) of the front existing sewer pipe 2y(2) and the new pipe connecting jig 55x(55) of the new sewer pipe 2x(2) before being connected to the tail frame 20. Then, the process proceeds to S15.Here, as mentioned above, the "wire rope 19" may be used as the "rope-like member", and in this case, the term "wire rope" is read as "rope-like member" and applied. Furthermore, if the pipe connection jig attaching step (S13) and the rope-like member locking step (S14) were performed previously before the current pipe connection jig attaching step (S13) is performed, and the pipe connection jig 55 for the sewer pipe 2 (the previous existing sewer pipe 2y) and the pipe connection jig 55 for the sewer pipe 2 (the new sewer pipe 2x) are wound with the wire rope 19, the wire rope 19 around which the pipe connection jig 55 for the sewer pipe 2 (the previous existing sewer pipe 2y) and the pipe connection jig 55 for the sewer pipe 2 (the new sewer pipe 2x) are wound is unwound before the pipe connection jig attaching step (S13) is performed, and then the pipe connection jig 55 for the sewer pipe 2 (the previous existing sewer pipe 2y) is removed, and then the pipe connection jig attaching step (S13) is performed. This step is called the "rope-like member pipe connection jig removing step."

[0059] In S15, a "pipe tightening process" is carried out. In this pipe tightening process, the wire rope 19 is pulled by the wire rope tensioning device 51 provided on the tail frame 20, and the sewer pipe 2 installed ahead (the existing sewer pipe 2y ahead) and the sewer pipe 2 (the new sewer pipe 2x) behind it are pulled and tightened by the wire rope 19. Specifically, with one end of the wire rope 19 (wire rope one end loop portion 19a) attached to the wire rope one end locking length adjustment portion 52a in front of the tail frame 20 and the other end of the wire rope 19 (wire rope other end loop portion 19b) attached to the wire rope other end locking portion 52b in front of the tail frame 20, the tension piston 51b in the tension cylinder 51a is moved upward using the operation lever 53 or the operation remote control 54. As a result, the wire rope 19 is pulled 50 centimeters (25 centimeters x 2 (corresponding to the two pulling pistons 51b)) (a predetermined length), increasing the pulling force of the wire rope 19, and the sewer pipe 2 (the existing sewer pipe 2y at the other end) and the sewer pipe 2 (the new sewer pipe 2x) are pulled and tightened. In this embodiment, the pulling piston 51b in the pulling cylinder 51a is moved upward to pull the wire rope 19 50 centimeters (25 centimeters x 2 (corresponding to the two pulling pistons 51b)), but the pulling force of the wire rope 19 can be adjusted by adjusting the degree to which the pulling piston 51b in the pulling cylinder 51a is raised. Then, the process proceeds to S16.

[0060] In S16, a "ground burying process" is carried out. In this ground burying process, soil is poured into the surrounding area from above the sewer pipe 2 (existing sewer pipe 2y) connected to the other end of the sewer pipe 2 (new sewer pipe 2x), and the excavated ground around the sewer pipe 2 (existing sewer pipe 2y) is filled in and returned to its original state before excavation. Then, the process proceeds to S18.

[0061] In this way, in the ground burying step (S16), soil is poured in from above the sewer pipe 2 (existing sewer pipe 2y at the other end), and the ground is filled and returned to its original state before excavation. As a result, in the ground burying step (S16), the sewer pipe 2 (existing sewer pipe 2y at the other end) can be fixed at a specific position in the ground, making it difficult to move.

[0062] If the answer is "No" in S10, the process proceeds to S17, where the above-mentioned "pipe clamping process" is carried out. This "pipe clamping process" is the same process as S15, so its description will be omitted.

[0063] In S18, it is determined whether the Messel Shield sewer pipe joining process is finished. If the determination in S18 is "No," the process proceeds to S2, and the process from the excavation process (S2) described above is repeated. If the determination is "Yes," the Messel Shield sewer pipe joining process is finished. Note that the process from the excavation process (S2) is the same as the process described above, so a description thereof will be omitted.

[0064] Thus, in this embodiment, after the sewer pipe 2 (new sewer pipe 2x) of 250 centimeters (predetermined length) is installed, the tail frame 20 moves forward by 50 centimeters, thereby increasing the tensile force of the wire rope 19. However, even in this case, when the tail frame 20 moves forward by 50 centimeters, the tensile force of the wire rope 19 is adjusted by the rope tensile force adjustment process (S7), so that the tensile force of the wire rope 19 can be made sufficient and appropriate. Furthermore, even when the tail frame 20 has completed its 50-centimeter forward movement and the next pipe connection jig 55 is to be attached, the tensile force of the wire rope 19 is loosened by the rope length adjustment process (S9), so that the conventional pipe connection jig 55 can be easily removed.

[0065] As explained above, the wire rope 19 is wrapped around and locked to the pipe connecting jig 55y (55) attached to the tip (insertion port 2b) of the sewer pipe 2 (front existing sewer pipe 2y), and then wrapped around and locked to the pipe connecting jig 55x (55) attached to the rear end (inside the receiving port 2a) of the sewer pipe 2 (new sewer pipe 2x) joined to the rear end of the sewer pipe 2 (front existing sewer pipe 2y), and then wrapped around and locked to the pipe connecting jig 55y (55) attached to the sewer pipe 2 (front existing sewer pipe 2y). Since the wire rope 19 is connected to the tail frame 20 after being attached to the tail frame 20, even if the soil and sand below the tail frame 20 are dragged and moved by the tail frame 20 as the tail frame 20 moves forward, the joint between the sewer pipe 2 installed ahead (existing sewer pipe 2y ahead) and the newly installed sewer pipe 2 (new sewer pipe 2x) can be prevented from separating by increasing the tensile force of the wire rope 19 while both ends of the wire rope 19 are connected to the tail frame 20.

[0066] The embodiments disclosed herein should be considered to be illustrative in all respects and not restrictive. The scope of the present invention is defined by the claims, not by the above description, and is intended to include all modifications within the meaning and scope of the claims.

[0067] Next, a modified example of the Messel shield pipe joining device of the present invention will be described. (Variation 1) Next, a description will be given of a Messel shield pipe joining device according to a modified example 1 of the present invention. The difference between the Messel shield pipe joining device 1 according to one embodiment of the present invention and the Messel shield pipe joining device according to the modified example 1 is that in the Messel shield pipe joining device 1 according to one embodiment of the present invention, the other end loop portion 19b of the wire rope 19 is wound from the rear to the front in the outer circumferential direction around the front pipe connecting jig 55y (55) at the tip (insertion port 2b) of the front existing sewer pipe 2y (2), and then the new pipe connecting jig 55x (55) at the rear end (in the receiving port 2) of the new sewer pipe 2x (2) is wound around the new pipe connecting jig 55x (55) The wire rope 19 is then wound from the front to the rear in the outer circumferential direction around the end of the existing sewer pipe 2y(2) at the tip (insertion port 2b) of the existing sewer pipe 2y(2) at the other end of the pipe connecting jig 55y(5 ... 2b) and the outside of the new pipe connection jig 551x (551) of the rear end (in the receiving port 2) of the new sewer pipe 2x (2), a rotating roller 552 is provided, and the wire rope 19 is wound around the front pipe connection jig 551y (551) of the tip (insertion port 2b) of the front existing sewer pipe 2y (2) from the rear to the front through the rotating roller 552 provided on the outside of the front pipe connection jig 551y (551), and then the new pipe at the rear end (in the receiving port 2) of the new sewer pipe 2x (2) The difference is that the wire rope 19 is passed from front to rear around the connecting jig 551x (551) via the rotating rollers 552 provided on the outside, and then passed from rear to front around the front pipe connecting jig 551y (551) at the tip (insertion port 2b) of the existing sewer pipe 2y (2) on the other side via the rotating rollers 552 provided on the outside, and then the loop portion 19b at the other end of the wire rope of the wire rope 19 is engaged and connected to the wire rope other end engaging portion 52b at the front of the tail frame 20. Note that in Modification 1 of the present invention, what has been described in one embodiment of the present invention (including other modifications) is applied, and the same reference numerals are used for components with the same configuration as one embodiment of the present invention (including other modifications), and the same functions and effects are provided, so description thereof will be omitted.

[0068] In variant example 1 of the present invention, rotating rollers 552 that rotate in the forward and backward directions are provided on the outer surface of the pipe connecting jig 551 (new pipe connecting jig 551x, front pipe connecting jig 551y) (see Figure 15), so that the wire rope 19 wraps around the pipe connecting jig 551 (new pipe connecting jig 551x, front pipe connecting jig 551y) via the rotating rollers 552 of the pipe connecting jig 551 (new pipe connecting jig 551x, front pipe connecting jig 551y) and is engaged with the pipe connecting jig 551 (new pipe connecting jig 551x, front pipe connecting jig 551y) (see Figure 15(b)). Here, Figure 15(a) is a side view of a pipe connection jig equipped with a rotating roller in variant example 1 of the present invention, Figure 15(b) is a top view of the pipe connection jig equipped with the same rotating roller, and Figure 15(c) is a diagram showing a method of connecting a wire rope to the pipe connection jig equipped with the same rotating roller.

[0069] In this way, rotating rollers 552 are provided on the outside of pipe connecting jig 55 (new pipe connecting jig 55x, front pipe connecting jig 55y), and wire rope 19 can be wound around pipe connecting jig 55 (new pipe connecting jig 55x, front pipe connecting jig 55y) via rotating rollers 552 of pipe connecting jig 55 (new pipe connecting jig 55x, new pipe connecting jig 55x), thereby smoothly tightening wire rope 19 along with the rotation of rotating rollers 552. This allows the tensile force of wire rope 19 to be increased quickly and smoothly, and the joint between front existing sewer pipe 2y(2) arranged at the front and newly installed new sewer pipe 2x(2) can be quickly and smoothly prevented from separating.

[0070] (Variation 2) Next, a description will be given of a Messel shield pipe joining device according to a second modified example of the present invention. In the rope-like member tensile force adjusting step (S7) of the Messel shield pipe joining method according to one embodiment of the present invention, the tensile force (tensile load) of the wire rope 19 tightening the sewer pipe 2 (existing sewer pipe 2y at the front) and the sewer pipe 2 (new sewer pipe 2x) installed at the front by the pipe tightening step (S16) is adjusted. The rope-like member tensile force adjusting step (S7) of one embodiment of the present invention differs from the rope-like member tensile force adjusting step of the second modified example in that in the rope-like member tensile force adjusting step (S7) of one embodiment of the present invention, the operator operates the operating lever 53 or the operating remote controller 54 to adjust the tensile force (tensile load) of the wire rope 19 based on the measured value measured by the tensile force measuring device 56. In the first modification of the present invention, the tensile force (tensile load) of wire rope 19 was adjusted, but in the rope-like member tensile force adjusting step (S7) of the second modification of the present invention, the tensile force (tensile load) of wire rope 19 pulled by wire rope tensioning device 51 is measured by tensile force measuring device 56 and transmitted to control means (not shown), and the control means (not shown) controls the tensile force (tensile load) of wire rope 19 so that the measured value measured by tensile force measuring device 56 does not exceed a predetermined value, i.e., if the measured value measured by tensile force measuring device 56 exceeds the predetermined value, the wire rope tensioning device 51 controls the tensile force (tensile load) of wire rope 19. Note that the second modification of the present invention applies what has been described in one embodiment of the present invention (including other modifications), and the same reference numerals are used for components having the same configuration as one embodiment of the present invention (including other modifications), and the same functions and effects are assumed to be achieved, so description thereof will be omitted.

[0071] In this way, the wire rope pulling device 51 controls the tensile force (tensile load) of the wire rope 19 so that the measured value measured by the tensile force measuring device 56, in which the wire rope 19 is pulled by the wire rope pulling device 51, does not exceed a predetermined value (for example, the breaking tensile force value), thereby making it possible to easily, stably and reliably prevent the joint between the existing sewer pipe 2y(2) and the new sewer pipe 2x(2) from separating.

[0072] (Variation 3) Next, a description will be given of a Messel shield pipe joining device according to a modified example 3 of the present invention. The difference between the Messel shield pipe joining device 1 according to one embodiment of the present invention and the Messel shield pipe joining device according to the modified example 3 is that in the Messel shield pipe joining device 1 according to one embodiment of the present invention, the pipe connecting jig 55 is attached by engaging with the end face of the pipe main body 2c in the receiving port 2a of the new sewer pipe 2x(2) and the end face of the insertion port 2b of the previous existing sewer pipe 2y(2) joined to the end face of the insertion port 2b of the new sewer pipe 2x(2), whereas in the Messel shield pipe joining device according to the modified example 3 of the present invention, the pipe connecting jig is attached by engaging with the end face of the pipe main body 2c in the receiving port 2a of the new sewer pipe 2x(2) The pipe connection jig is attached to the inside of the existing sewer pipe 2y(2) near the middle (approximately the middle) of the existing sewer pipe 2y(2) and the inside of the existing sewer pipe 2y(2) near the middle (approximately the middle) of the existing sewer pipe 2y(2) that precedes it, and the pipe connection jig has four sewer pipe inner surface support pipes provided on the side circumference on the front and rear sides of the jig center pipe that extends in the longitudinal direction, and sewer pipe inner surface installation bodies are installed at the outer ends of the sewer pipe inner surface support pipes that are attached to the front and rear sides of the jig center pipe at the same position on the front and rear sides of the jig center pipe on the front and rear circumference, so that the sewer pipe inner surface installation bodies are installed in the same longitudinal direction as the jig center pipe. The sewer pipe inner surface support pipes can be rotated outward from the longitudinal direction of the sewer pipe 2 around the axis of their attachment to the jig center pipe. In this way, the sewer pipe inner surface support pipes installed at the same circumferential positions in the front and rear directions on the front and rear sides can be rotated outward from the longitudinal direction of the sewer pipe 2 around the connection point with the jig center pipe as an axis, so that the sewer pipe inner surface installed bodies installed at the outer ends of the sewer pipe inner surface support pipes installed at the same circumferential positions in the front and rear directions on the front and rear sides can be moved outward, that is, toward the inner surface of the sewer pipe 2, thereby coming into contact with the inner surface of the sewer pipe 2. Note that in Modification 3 of the present invention, what has been described in one embodiment of the present invention (including other modifications) is applied, and the same reference numerals are used for components with the same configuration as one embodiment of the present invention (including other modifications), and since they have the same functions and effects, description thereof will be omitted.

[0073] The worker rotates the sewer pipe inner surface support pipe outward from the longitudinal direction of the sewer pipe 2 around the connection point with the jig center pipe inside the sewer pipe 2, thereby bringing the sewer pipe inner surface installation body installed at the outer tip of the sewer pipe inner surface support pipe into contact with the inner surface of the sewer pipe 2. Then, by moving the inner support pipe inserted inside the tip of the sewer pipe inner surface support pipe outward, the overall length of the sewer pipe inner surface support pipe and the inner support pipe can be increased, so that the sewer pipe inner surface installation body can be strongly pressed against the inner surface of the sewer 2. The inner support pipe inserted inside the tip of the sewer pipe inner surface support pipe can be moved outward by manually turning the rotating screw to rotate the rotating gear that rotates in conjunction with the rotation of the rotating screw. In this third variant, the inner support pipe tube inserted inside the tip of the sewer pipe inner support pipe is moved toward the outside of the sewer pipe inner support pipe by manually turning the rotary screw to rotate the rotary gear that rotates in conjunction with the rotation of the rotary screw. However, this is not limited to this, and a hydraulic cylinder may be provided and oil may be supplied to the hydraulic cylinder to move the inner support pipe tube inserted inside the tip of the sewer pipe inner support pipe toward the outside of the sewer pipe inner support pipe.

[0074] Then, using the pipe connection jig of Modification 3, the wire rope 19 is passed around and engaged with the pipe connection jig attached inside the sewer pipe 2 (front existing sewer pipe 2y), and then passed around and engaged with the pipe connection jig attached inside the sewer pipe 2 (new sewer pipe 2x) joined to the rear end of the sewer pipe 2 (front existing sewer pipe 2y), and then passed around and engaged with the pipe connection jig attached to the sewer pipe 2 (front existing sewer pipe), and then connected to the front of the tail frame 20. As a result, even if the tail frame 20 moves forward and causes soil and sand below the tail frame 20 to be dragged and moved by the tail frame 20, the tensile force of the wire rope 19, both ends of which are connected to the tail frame 20, is increased, so that the joint between the sewer pipe 2 installed ahead (front existing sewer pipe) and the newly installed sewer pipe 2 (new sewer pipe) will not come apart.

[0075] (Variation 4) Next, a description will be given of a Messel shield pipe joining device according to Modification 4 of the present invention. The Messel shield pipe joining device 1 according to one embodiment of the present invention differs from the Messel shield pipe joining device according to Modification 4 in that, in the Messel shield pipe joining device 1 according to one embodiment of the present invention, the wire rope 19 is wound at least once around the pipe connecting jig 55 attached to the end face of the pipe main body 2c in the receiving port 2a of the new sewer pipe 2x(2) and the pipe connecting jig 55 attached to the insertion port 2b of the previous existing sewer pipe 2y(2) joined to the end face of the insertion port 2b of the new sewer pipe 2x(2), and then connected to the tail frame 20. In the Messel shield pipe joining device of the fourth modification, a wound wire rope 60 is provided which is formed in a shape extending in the longitudinal direction and can join both ends together, and the wound wire rope 60 is connected to a pipe connecting jig 55y (55) attached to the existing sewer pipe 2y (2) which is the sewer pipe 2 installed at the front, and a pipe connecting jig 55x (55) attached to the new sewer pipe 2x (2) which is the newly installed sewer pipe 2 joined to the rear end of the existing sewer pipe 2y (2) ) at least once to join both ends, and the wire rope 19 is connected to a wound wire rope 60 wound at least once around a pipe connection jig 55y (55) attached to the existing sewer pipe 2y (2) that is the sewer pipe 2 installed at the other end, and a pipe connection jig 55x (55) attached to the new sewer pipe 2x (2) that is the newly installed sewer pipe 2 joined to the rear end of the existing sewer pipe 2y (2) at the other end to join both ends. Note that in Modification 4 of the present invention, what has been described in one embodiment of the present invention (including other modifications) is applied, and the same reference numerals are used for components with the same configuration as one embodiment of the present invention (including other modifications), and the same actions and effects are assumed to be achieved, so description thereof will be omitted.

[0076] The Messel shield pipe joining device according to the fourth modification of the present invention will be specifically described with reference to Fig. 16. Here, Fig. 16(a) is a diagram showing a state in which a sewer pipe (pipe connection jig) is wound with the wound wire rope of the Messel shield pipe joining device according to the fourth modification of the present invention, and Fig. 16(b) is a diagram showing a method of connecting the Messel shield pipe joining device to the wound wire rope around which the sewer pipe (pipe connection jig) is wound, and the wire rope.

[0077] The wound wire rope 60 is made of the same material and shape as the wire rope 19 (see FIG. 8). In the fourth modification, the wound wire rope 60 is first wound from the front to the outer periphery of the front pipe connecting jig 55y(55) at the tip (insertion port 2b) of the front existing sewer pipe 2y(2), and then wound from the rear to the outer periphery of the new pipe connecting jig 55x(55) at the rear end (receiving port 2a) of the new sewer pipe 2x(2). After the wound wire rope 60 has been wound around the front pipe connecting jig 55y(55) attached to the front existing sewer pipe 2y(2) and the new pipe connecting jig 55x(55) attached to the new sewer pipe 2x(2) one turn, the ends of the wound wire rope 60 are joined together using a wire shackle 59 (see FIG. 16(a)). In addition, in variant example 4, the end of the wound wire rope 60 is joined when the end pipe connecting jig 55y (55) attached to the end existing sewer pipe 2y (2) and the new pipe connecting jig 55x (55) attached to the new sewer pipe 2x (2) are wound around one turn, but this is not limited to this, and the end of the wound wire rope 60 may be joined when the end pipe connecting jig 55y (55) attached to the end existing sewer pipe 2y (2) and the new pipe connecting jig 55x (55) attached to the new sewer pipe 2x (2) are wound around two or more turns. In this way, since the wound wire rope 60 is intended to prevent the front existing sewer pipe 2y(2) and the new sewer pipe 2x(2) from separating, there is no problem as long as the wound wire rope 60 is wound so that the front pipe connecting jig 55y(55) attached to the front existing sewer pipe 2y(2) and the new pipe connecting jig 55x(55) attached to the new sewer pipe 2x(2) do not separate.In that sense, the ends of the wound wire rope 60 can be joined when the front pipe connecting jig 55y(55) attached to the front existing sewer pipe 2y(2) and the new pipe connecting jig 55x(55) attached to the new sewer pipe 2x(2) have been wound around them at least once. In the fourth variant, a pipe connection jig 55 is installed on each of the sewer pipe 2 and the adjacent sewer pipe 2, but this is not limited to this. As described above, similar to one embodiment of the present invention, a pipe connection jig 55 may be installed on each of the sewer pipe 2 and the preceding sewer pipe 2 (such as the sewer pipe 2 two or three adjacent to the succeeding sewer pipe 2 (2x)).

[0078] The wire rope 19 is connected to a pipe connection jig 55 attached to the existing sewer pipe 2y(2) at the other end and a wound wire rope 60 wound around the pipe connection jig 55 attached to the new sewer pipe 2x(2). Specifically, the wire rope 19 is connected to the wound wire rope 60 by attaching the loop portion 19b at the other end of the wire rope 19 to a wire shackle 59 used to connect the ends of the wound wire rope 60 (see Figure 16(b)). In this embodiment, the wire rope 19 and the wound wire rope 60 are joined by attaching the loop portion 19b of the wire rope 19 to the wire shackle 59 used to join the ends of the wound wire rope 60. However, the wire rope 19 may be passed through the loop of the wound wire rope 60, which is wrapped around the front pipe connection jig 55y(55) attached to the front existing sewer pipe 2y(2) and the new pipe connection jig 55x(55) attached to the new sewer pipe 2x(2), and then the loop portion 19b of the wire rope 19 at the other end is engaged and connected to the wire rope other end engaging portion 52b in front of the tail frame 20. Even with this structure, when the tail frame 20 is moved forward, the tensile force of the wire rope 19 (wrapped wire rope 60) increases, so even when the tail frame 19 is moved forward, the joint between the existing sewer pipe 2y(2) installed at the front and the newly installed new sewer pipe 2x(2) can be prevented from separating.

[0079] (Variation 5) Next, a description will be given of a Messel shield pipe joining device according to Modification 5 of the present invention. The Messel shield pipe joining device 1 according to one embodiment of the present invention differs from the Messel shield pipe joining device according to Modification 5 in that, in the Messel shield pipe joining device 1 according to one embodiment of the present invention, the wire rope 19 is wound at least once around the pipe connecting jig 55 attached to the end face of the pipe main body 2c in the receiving port 2a of the new sewer pipe 2x(2) and the pipe connecting jig 55 attached to the insertion port 2b of the previous existing sewer pipe 2y(2) joined to the end face of the insertion port 2b of the new sewer pipe 2x(2), and then connected to the tail frame 20. The Messel shield pipe joining device of the fifth variation of the present invention is provided with a through-winding wire rope 61 extending longitudinally and having at least one end formed in a loop shape. The through-winding wire rope 61 is wound at least once around a front pipe connection jig 55y (55) attached to the front existing sewer pipe 2y (2), which is the sewer pipe 2 installed at the front, and a new pipe connection jig 55x (55) attached to the new sewer pipe 2x (2), which is the newly installed sewer pipe 2 joined to the rear end of the front existing sewer pipe 2y (2). The other end is inserted and passed through the loop-shaped end, and the wire rope 19 is connected to the other end of the through-winding wire rope 61 inserted and passed through the loop-shaped end. Note that the fifth variation of the present invention applies to the same configurations as those of the first embodiment of the present invention (including other variations), and the same reference numerals are used to designate components having the same functions and effects, and therefore description thereof will be omitted.

[0080] The Messel shield pipe joining device of the fifth modified example of the present invention will be specifically described with reference to Fig. 17. Here, Fig. 17(a) is a diagram showing a state in which a sewer pipe (pipe connection jig) is wound with the penetration winding wire rope of the Messel shield pipe joining device of the fifth modified example of the present invention, and Fig. 17(b) is a diagram showing a method of connecting the same Messel shield pipe joining device and the penetration winding wire rope around which the sewer pipe (pipe connection jig) is wound.

[0081] The through-winding wire rope 61 is made of the same material and shape as the wire rope 19 (see FIG. 8). In the fifth modification, the through-winding wire rope 61 is first wound from rear to front around the front pipe connecting jig 55y(55) at the tip (insertion port 2b) of the front existing sewer pipe 2y(2) in the outer circumferential direction, and then wound from front to rear around the new pipe connecting jig 55x(55) at the rear end (receiving port 2a) of the new sewer pipe 2x(2) in the outer circumferential direction, and then wound once around the pipe connecting jig 55y(55) attached to the front existing sewer pipe 2y(2) and the pipe connecting jig 55x(55) attached to the new sewer pipe 2x(2), and then the other end of the through-winding wire rope 61 is inserted into the loop-shaped end and pulled (see FIG. 17). In the fifth modification, after the pipe connecting jig 55y(55) attached to the existing sewer pipe 2y(2) and the pipe connecting jig 55x(55) attached to the new sewer pipe 2x(2) are wound around one turn, the other end of the through-winding wire rope 61 is inserted into and passed through the loop-shaped end of the wire rope, and the other end of the through-winding wire rope 61 is pulled. However, this is not limited to this, and after the pipe connecting jig 55y(55) attached to the existing sewer pipe 2y(2) and the pipe connecting jig 55x(55) attached to the new sewer pipe 2x(2) are wound around two or more turns, the other end of the through-winding wire rope 61 is inserted into and passed through the loop-shaped end of the wire rope, and the other end of the through-winding wire rope 61 is pulled. In this way, the through-winding wire rope 61 is intended to prevent the existing sewer pipe 2y(2) and the new sewer pipe 2x(2) from separating, so there is no problem as long as the pipe connection jig 55y(55) attached to the existing sewer pipe 2y(2) and the pipe connection jig 55x(55) attached to the new sewer pipe 2x(2) are wrapped so that they do not separate.In that sense, once the pipe connection jig 55y(55) attached to the existing sewer pipe 2y(2) and the pipe connection jig 55x(55) attached to the new sewer pipe 2x(2) have been wrapped around them at least once, the other end of the through-winding wire rope 61 can be inserted through the loop at one end and pulled.As described above, the wire rope 19 may be provided with a spring or an expandable / contractible portion in the middle or at one end of the wire rope 19 extending in the longitudinal direction, similar to the wire rope 19 of this embodiment. Furthermore, in the fifth modification, loop-shaped portions are provided at both ends of the through-winding wire rope 61, but a loop-shaped portion may be provided at only one end.

[0082] The wire rope 19 is connected to the other end of the through-winding wire rope 61 that is inserted through the loop-shaped end of the wire rope 19. In this way, in the fifth modification, the wire rope 19 attached to the front part of the tail frame 20 is connected to the other end of the through-winding wire rope 61 (see FIG. 17(b)). Even in this structure, when the tail frame 20 is moved forward in the forward direction, the tensile force of the wire rope 19 (through-winding wire rope 61) increases, so that even when the tail frame 19 is moved forward in the forward direction, the joint between the existing sewer pipe 2y(2) installed ahead and the newly installed new sewer pipe 2x(2) can be prevented from separating. [Explanation of symbols]

[0083] 1. Messel shield pipe joining device 2 Sewer pipe 2x new sewer pipes 2y Existing sewer pipes on the other side 2a socket 2b socket 2c Pipe body 4 Frame 10 Front Frame 11 Vertical pillars 12 Transverse reinforcement 13 Strand beam 14 Support beam 15 Press-fit jack 16 Bottom jack 17 Bottom Messel 18 Control Unit 19 Wire rope 19a Wire rope one end loop 19b Wire rope other end loop 20 tail frame 21 horizontal beam 22 Sled 23 Vertical pillars 24 Transverse reinforcement 25 Frame 26 Strand beam 27 Hanging space 28 Reinforcement 30 Intermediate jack 40 Front Messel 41 Termessel 51 Wire rope tensioning device 51a Tension Cylinder 51b Pulling piston 51c Wire rope tensioning device upper left roller 51d Wire rope tensioning device upper right roller 51e Wire rope tensioning device backside middle roller 51f Wire rope locking part 51g Wire rope locking part 51h Guide roller 52a Wire rope one end locking length adjustment part 52b Wire rope other end locking part 53 Operating lever 54 Operation remote control 54a Remote control box 55 Pipe connection jig 55x Pipe Connection Jigs 55y Pipe connection jig 55a Connecting rod 55b Locking plate 56 Tensile force measuring device 56a Opening at one end of measuring device 56b Measuring device other end opening 57 Tensile force display unit 58 Crane 59 Wire Shackle 60 Winding wire rope 61 Through-wrap wire rope 551 Pipe connection jig 551x New pipe connection jig 551y End pipe connection jig 552 Rotating Roller

Claims

1. An open-cut self-propelled shield pipe joining device in which an intermediate jack is connected between a front frame and a tail frame and used to join pipes that are installed continuously, a front frame in which a strut configured in the longitudinal direction is arranged between left and right frame bodies each having a vertical column member and a horizontal reinforcement member; a tail frame connected to the front frame by an intermediate jack and having an open top for installing a pipe; a plurality of front meshes provided in the up-down direction on each of the left and right sides of the front frame; a press-fit jack provided corresponding to each of the plurality of front messels and configured to move the front messels in the front-rear direction; a plurality of bottom meshes provided laterally on the bottom of the front frame and capable of protruding from the front bottom of the front frame; a bottom jack provided corresponding to each of the plurality of bottom meshes and configured to move the bottom meshes in the front-rear direction; a plurality of tail meshes provided in the up-down direction on each of the left and right sides of the tail frame; a rope-like member formed in a shape extending in a longitudinal direction, both ends of which are connected to the tail frame; The rope-like member is connected to the tail frame after being wound at least once around a pipe connection jig attached to an existing pipe, which is a pipe installed ahead, and a pipe connection jig attached to a new pipe, which is a newly installed pipe connected behind the existing pipe, and when the tail frame is moved forward with both ends of the rope-like member connected to the tail frame, the tensile force of the rope-like member increases, so that even when the tail frame is moved forward, the existing pipe installed ahead and the newly installed new pipe do not separate.This is an open-cut type self-propelled shield pipe joining device.

2. An open-cut self-propelled shield pipe joining device in which an intermediate jack is connected between a front frame and a tail frame and used to join pipes that are installed continuously, a front frame in which a strut configured in the longitudinal direction is arranged between left and right frame bodies each having a vertical column member and a horizontal reinforcement member; a tail frame connected to the front frame by an intermediate jack and having an open top for installing a pipe; a plurality of front meshes provided in the up-down direction on each of the left and right sides of the front frame; a press-fit jack provided corresponding to each of the plurality of front messels and configured to move the front messels in the front-rear direction; a plurality of bottom meshes provided laterally on the bottom of the front frame and capable of protruding from the front bottom of the front frame; a bottom jack provided corresponding to each of the plurality of bottom meshes and configured to move the bottom meshes in the front-rear direction; a plurality of tail meshes provided in the up-down direction on each of the left and right sides of the tail frame; a rope-like member formed in a shape extending in the longitudinal direction and having an end connected to the tail frame; a wound rope-like member formed in a shape extending in the longitudinal direction and capable of connecting both ends to each other; The wound rope-like member is wound around a pipe connection jig attached to an existing pipe culvert, which is a pipe culvert installed at the front, and a pipe connection jig attached to a new pipe culvert, which is a newly installed pipe culvert connected behind the existing pipe culvert, at least once to connect both ends of the wound rope-like member, The rope-like member is connected to a wound rope-like member that has both ends joined together by wrapping the rope-like member around a pipe connection jig attached to an existing pipe, which is a pipe installed at the other end, and a pipe connection jig attached to a new pipe, which is a newly installed pipe connected behind the existing pipe, at least once, and then moving the tail frame forward, the tensile force of the rope-like member increases, so that even if the tail frame is moved forward, the existing pipe installed at the other end and the newly installed new pipe do not separate.This is an open-cut self-propelled shield pipe joining device.

3. An open-cut self-propelled shield pipe joining device in which an intermediate jack is connected between a front frame and a tail frame and used to join pipes that are installed continuously, a front frame in which a strut configured in the longitudinal direction is arranged between left and right frame bodies each having a vertical column member and a horizontal reinforcement member; a tail frame connected to the front frame by an intermediate jack and having an open top for installing a pipe; a plurality of front meshes provided in the up-down direction on each of the left and right sides of the front frame; a press-fit jack provided corresponding to each of the plurality of front messels and configured to move the front messels in the front-rear direction; a plurality of bottom meshes provided laterally on the bottom of the front frame and capable of protruding from the front bottom of the front frame; a bottom jack provided corresponding to each of the plurality of bottom meshes and configured to move the bottom meshes in the front-rear direction; a plurality of tail meshes provided in the up-down direction on each of the left and right sides of the tail frame; a rope-like member formed in a shape extending in the longitudinal direction and having an end connected to the tail frame; a through-winding rope-like member extending in the longitudinal direction and having at least one end formed in a loop shape; The through-winding rope-like member is wound around a pipe connection jig attached to an existing pipe culvert, which is a pipe culvert installed at the front, and a pipe connection jig attached to a new pipe culvert, which is a newly installed pipe culvert connected behind the existing pipe culvert, at least once, and the other end is inserted and passed through the loop-shaped member at one end, The rope-like member is connected to the other end of the through-winding rope-like member that has been inserted and passed through the loop-shaped member at one end, and when the tail frame is moved forward, the tensile force of the rope-like member increases, so that even when the tail frame is moved forward, the existing pipe installed at the front and the newly installed new pipe do not separate.This is an open-cut type self-propelled shield pipe joining device.

4. An open-cut self-propelled shield pipe joining device in which an intermediate jack is connected between a front frame and a tail frame and used to join pipes that are installed continuously, a front frame in which a strut configured in the longitudinal direction is arranged between left and right frame bodies each having a vertical column member and a horizontal reinforcement member; a tail frame connected to the front frame by an intermediate jack and having an open top for installing a pipe; a plurality of front meshes provided in the up-down direction on each of the left and right sides of the front frame; a press-fit jack provided corresponding to each of the plurality of front messels and configured to move the front messels in the front-rear direction; a plurality of bottom meshes provided laterally on the bottom of the front frame and capable of protruding from the front bottom of the front frame; a bottom jack provided corresponding to each of the plurality of bottom meshes and configured to move the bottom meshes in the front-rear direction; a plurality of tail meshes provided in the up-down direction on each of the left and right sides of the tail frame; a rope-like member formed in a shape extending in a longitudinal direction, both ends of which are connected to the tail frame; The rope-like member is wound around a pipe connection jig attached to an existing pipe culvert, which is a pipe culvert installed at the other end, from rear to front, and then is engaged therewith, and then wound around a pipe connection jig attached to a new pipe culvert, which is a newly installed pipe culvert joined at the rear of the existing pipe culvert, from front to rear, and then is engaged therewith, and then wound around a pipe connection jig attached to the existing pipe culvert, which is a newly installed pipe culvert joined at the rear of the existing pipe culvert, from rear to front, and then is engaged therewith, and then wound around a pipe connection jig attached to the existing pipe culvert, from rear to front, and then is engaged therewith, at least in the existing pipe culvert at the other end. An open-cut self-propelled shield pipe joining device characterized in that the connecting jig and the pipe connecting jig inside the new pipe are wound around at least once and then connected to the tail frame, and when the tail frame is moved forward with both ends of the rope-like member connected to the tail frame, the tensile force of the rope-like member increases, so that even when the tail frame is moved forward, the existing pipe installed ahead and the newly installed new pipe do not separate.

5. 5. The cut-and-cover self-propelled shield pipe joining device according to claim 1, wherein the rope-like member is a wire rope extending in the longitudinal direction.

6. The pipe connection jig has a rotating roller that rotates in a front-rear direction, 6. The cut-and-cover self-propelled shield pipe joining device according to claim 5, wherein the rope-like member is wrapped around and locked to the pipe connecting jig via a rotating roller of the pipe connecting jig.

7. a rope-like member tensioning device provided on the tail frame and capable of increasing or decreasing the tension force of the rope-like member; 7. The cut-and-cover self-propelled shield pipe joining device according to claim 6, wherein the rope-like member tensioning device is capable of adjusting the tension of the rope-like member by pulling the rope-like member.

8. a tension measuring device that measures the tension of the rope-like member pulled by the rope-like member tensioning device; a tensile force display device that displays the tensile force of the rope-like member measured by the tensile force measuring device, The open-cut type self-propelled shield pipe joining device according to claim 7, characterized in that the rope-like member tensioning device adjusts the tensile force of the rope-like member so that the tensile force of the rope-like member measured by the tensile force measuring device does not become a breaking tensile force.

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