JP2011241580A - Joint member - Google Patents

Abstract

PROBLEM TO BE SOLVED: To smoothly insert a fluid pipe for supplying chemicals and lubricant to the position of an excavator.SOLUTION: A joint member that has such an external diameter as to be inserted into a propelling pipe and that connects from an excavator to a propelling jack sequentially comprises a mud feeding pipe, a mud discharge pipe and a fluid pipe installed in an axial direction, and a front flange and a rear flange that have a vertical plane extending in a radial direction.

Description

  The present invention relates to a joint member used in a propulsion method in which a resin pipe, a fume pipe, and the like are buried by being press-fitted into the ground.

(Construction of start shaft and reach shaft)
In the muddy water type propulsion method which is a kind of the above-mentioned propulsion method, first, a start shaft and a reach shaft are constructed. For this purpose, the lower manhole frame is swivel-fitted with a swivel press and excavated by the excavator. Next, the intermediate manhole housing is connected to the lower manhole housing by welding. Furthermore, this intermediate manhole frame is swivel-fitted with a swivel press, and the earth and sand are excavated with an excavator. Then, a steel cylindrical connecting casing is detachably connected to the intermediate manhole housing. And foundation underwater concrete is laid in the bottom of the lower manhole frame.

(Survey)
Mark the pipeline center. In addition, the propulsion plan height and the machine installation high position are marked by level surveying.

(Installation of propulsion jack and muddy water treatment machine, etc.)
Adjust the propulsion jack in the start shaft so that it corresponds to the planned gradient and the planned direction, and install it. That is, the propulsion jack is suspended in the start shaft in accordance with the plan propulsion pipe center direction. Make a fine adjustment to the position marked on the inner wall surface of the manhole with a spacer, etc., and temporarily install the propulsion jack. The pipe gradient is measured according to the level, etc., and the pipe core of the propulsion jack is matched with the planned propulsion pipe center. After fine adjustment of the propulsion jack, fully fix the propulsion jack and fix it with the manhole wall or welding or jack. The reaction force of the propulsion jack is taken from the manhole wall.

(Promotion by excavator)
Next, the rear end portion of the excavator is connected to a propulsion jack, and the mud processing machine or the like feeds mud and discharges mud, and excavates with the excavator while refluxing the mud.
The excavator has a cutter head, a mud pipe, and a drain pipe. Connect the mud feed line to the mud pipe of the excavator and connect it to the mud treatment machine located in the start shaft or on the ground, and connect the mud drain to the mud pipe of the excavator Connect the sludge line. Then, the muddy water is transported from the muddy water treatment machine to the chamber of the excavator through the mud feed line and the mud pipe of the excavator. As a result, the chamber of the excavator is filled with muddy water, and mud pressure is applied to stabilize the face. The earth and sand excavated by the cutter head is transported from the mud pipe of the excavator to the mud treatment machine through the mud drain line. In the muddy water treatment machine, the mud mixed with the earth and sand transported by the mud line is separated into mud and earth and the specific gravity is adjusted, then the mud is returned to the mud line and continuously drilled. .

  Further, it is necessary to supply the excavator with a chemical solution for ground improvement and water stopping, and a lubricant for reducing the outer peripheral resistance of the propulsion pipe. Therefore, a fluid line from the chemical solution supply device or the lubricant supply device arranged in the start shaft or on the ground is connected to the fluid pipe of the excavator, and excavation is performed while transporting the chemical solution and the lubricant. In addition, a chemical | medical solution and a lubricant may use two or more types of liquids simultaneously.

  Further, in order to control the rotation of the excavator, the electric wire for the excavator signal is connected to the operation panel on the ground. In addition, the power line of the excavator is connected to a ground power source. Furthermore, the hydraulic pipe of the excavator is connected to the ground hydraulic unit.

(Connection and promotion of propulsion pipes and joint members)
Next, when the excavator has been propelled out of the starting shaft by about half or more, the excavation is stopped. Then, the mud feed line and the mud discharge line are removed from the mud feed pipe and the mud discharge pipe of the excavator, respectively. Then, the joint member in which the mud pipe and the mud pipe are integrated is put in the propulsion pipe, and is suspended from the ground on the propulsion jack at the bottom of the start shaft. And the front end of the joint member is connected to the rear end of the excavator so that the mud pipe and drain pipe of the joint member are connected to the mud pipe and exhaust pipe of the excavator in a sealed state. To do. Further, the front end of the propulsion pipe is connected to the rear end of the excavator. Furthermore, the rear end part of the mud pipe and the mud pipe of the joint member is connected to the mud line and the mud line connected to the muddy water treatment machine. Then, the rear end portion of the propulsion pipe and the joint member is connected to the propulsion jack.
In this state, as in the previous case, excavation and propulsion are performed by the excavator while the mud is recirculated between the chamber of the excavator and the muddy water treatment machine.

  Similarly, excavation and propulsion are performed by sequentially adding the propulsion pipe and the joint member behind the propulsion pipe and the joint member.

(Recovery)
When the excavator reaches the reach shaft, the excavator is lifted and collected from the reach shaft, and the joint member is pulled out to the reach shaft or start shaft and lifted to the ground for recovery. In this way, the propulsion pipe is left in the ground.

  The above is one type of the above-mentioned propulsion method, and is an explanation of the muddy water type propulsion method for circulating the muddy water. In addition, the propulsion methods include the so-called mud type propulsion method that pumps and discharges high-concentration mud and the so-called mud type propulsion method that pumps and discharges earth and sand. These methods are pumped and discharged to the excavator. Although the materials to be used are different, the construction will be carried out by the same method as the muddy water type propulsion method.

  In addition, there exists a thing as described in patent document 1 as a conventional joint member.

JP 11-247588 A

  However, in a conventional joint member, a fluid pipe or a fluid line for transporting a chemical solution or a lubricant is not integrated with the joint member. Therefore, it has been necessary to insert a fluid line for supplying a chemical solution and a lubricant, along with the hydraulic pipe, power line, and signal wire, along the joint member to the tip of the excavator. In this case, there is a risk that these pipes and wires are entangled with each other, one of them is squeezed on the other, or is bent or cracked in the middle. In particular, when two or more kinds of chemicals / lubricants are used at the same time, it is necessary to arrange two or more fluid lines up to the tip portion, which increases these risks. Also, in propulsion work, it is necessary to always pay attention to the state of long-distance wiring and piping from the excavator to the starting shaft so that such problems do not occur, causing a reduction in work efficiency. It was.

  Further, when the joint member is put into the propulsion pipe and when the joint member is taken out from the propulsion pipe, the conventional joint member has a risk of damaging the inside of the propulsion pipe. For this reason, conventionally, an anti-friction sheet or the like has been attached to the lower part of the joint member, but this may be peeled off due to continuous use or unevenness in the propelling tube. In addition, the friction preventing sheet does not achieve a sufficient reduction in friction, and the inside of the propulsion tube may be damaged.

  Further, conventionally, the anti-friction sheet is only attached to the lower part of the joint member. Therefore, when the joint member rotates and falls to the side due to a trouble, the side surface of the joint member is moved to the propulsion pipe. Could damage the inside of the.

  Conventionally, since the joint member is designed in accordance with the size of the propulsion pipe, it is inconvenient to use a different joint member for each size of the propulsion pipe.

  Also, when lowering the joint member to the start shaft, the joint member is placed in advance in the propulsion pipe, the propulsion pipe is held by a wire or the like, and the axial direction of the start shaft is kept substantially horizontal. Lower from top to bottom and set on propulsion jack. However, when the propelling pipe is inclined for some reason during the descending operation, there is a risk that the joint member slides out of the propelling pipe. In particular, this risk increases when a friction prevention sheet or the like is attached to the lower part of the joint member.

  Furthermore, the conventional joint member has a low strength because it simply connects the exhaust mud pipe and the like with the flanges at both ends or the holding members at the intermediate part. In particular, in the propulsion method, since the excavator at the tip excavates rocks while rotating, a very strong torsional stress is applied to the joint member. Therefore, so-called rolling that the joint member is twisted may occur. In particular, when propulsion is performed over a long distance of, for example, 100 meters, the risk of occurrence of this rolling increases.

  The present invention has been made in order to solve the above-described problems, and smoothly inserts a fluid pipe for transporting a chemical solution and a lubricant to the position of the excavator, prevents damage to the inner surface of the propulsion pipe, and has a different size. An object of the present invention is to provide a joint member that can cope with the propulsion pipe, to safely drop the joint member into the start shaft, and to prevent rolling by increasing the strength of the joint member.

  In order to solve the above problems, the invention described in claim 1 is provided with a front flange, a rear flange, a center pipe, a mud pipe, a mud pipe and a fluid pipe, and has an outer shape which can be inserted into a propulsion pipe. A joint member that sequentially connects from the excavator to the propulsion jack, wherein the central pipe, the mud pipe, the drain pipe, and the fluid pipe disposed in the axial direction of the joint member are front end portions. Are fixed to each other in a state where they are opened to the rear side of the center opening, the mud supply opening, the drainage opening, and the fluid opening of the front flange, and the rear end is the center opening of the rear flange. The mud opening, the mud opening and the fluid opening are fixed in a state where they are opened to the front side, and the front flange and the rear flange are through holes, the central opening and the mud opening. And the mud opening and the fluid opening A vertical surface extending in a radial direction and a connecting portion to which a fixing tool can be detachably attached, and can be connected to the excavator, another joint member, a propulsion jack or a head cap by the connecting portion; It is made into the joint member characterized by these.

  Thereby, a chemical | medical solution and a lubricant are transported to the excavator through the fluid pipe integrated with the joint member. For this reason, there is no danger that the fluid line supplying the chemical solution and the lubricant is tangled with the hydraulic pipe, the power line, the signal wire, pressed against each other, bent in the middle, or cracked.

Generally, the joint member including the fluid pipe is preferably made of steel, but is not limited thereto.
The fixture may be a bolt, a nut, a block, a pin, a connection hook, or the like.
The connecting part may be a hole, a groove or the like.

  In order to solve the above-mentioned problem, the invention according to claim 2 is provided with either or both of a caster and a slip stopper that protrude downward or obliquely downward, and the joint member according to claim 1, It is what.

  Accordingly, when the joint member is inserted into the propulsion pipe and when the joint member is taken out from the propulsion pipe, the wheels of the casters roll, so that the joint member can be prevented from being damaged inside the propulsion pipe.

  Further, when the joint member is put in the propulsion pipe and lowered to the start shaft, even if the propulsion pipe is inclined, the anti-slip and friction inside the propulsion pipe cause the propulsion pipe This reduces the risk that the joint member will slide out.

  Moreover, the same joint member can be used for the propulsion pipes of different sizes by making it possible to adjust the lengths of the casters and the non-slip legs according to the propulsion pipe size.

  In order to solve the above-mentioned problem, the invention according to claim 3 includes a protective member that protrudes outward from the central axis of the joint member. It is a member.

As a result, even when the joint member rotates and falls sideways, the protective member contacts the inside of the propulsion tube, so that the side surfaces of the joint member prevent the inner surface of the propulsion tube from being damaged. be able to.
Moreover, the same joint member can be used for a propulsion pipe of a different size by making the protrusion length of the protection member adjustable according to the size of the propulsion pipe.

  In order to solve the above-mentioned problem, the invention according to claim 4 is a reinforcing plate fixed to the front flange and the rear flange by welding, the center pipe, the mud pipe, the mud pipe and the fluid. The joint member according to any one of claims 1 to 3, further comprising a reinforcing plate fixed to one or more of the tubes by welding.

  Thereby, the intensity | strength of a joint member can be increased and rolling can be prevented.

  In order to solve the above-mentioned problem, the invention according to claim 5 is connected to a propulsion jack having a groove portion fitted to a substantially rectangular parallelepiped block via the block, and the fixing tool related to the rear flange is the block. 5. The joint member according to claim 1, wherein the connecting portion related to the rear flange is a groove portion that fits into the block.

  Thereby, the joint member and the propulsion jack can be firmly connected to a torsional stress particularly in a direction of rotation around the axis.

  The above-mentioned present invention can smoothly insert the fluid pipe for transporting the chemical solution and the lubricant to the position of the excavator.

It is a perspective view of joint member 1 of a 1st embodiment. (A) is a side view of the joint member 1, (b) is a front view, (c) is a rear view. (A) is an AA line cutting | disconnection end elevation, (b) is a perspective view from the front of the joint member 1. FIG. (A) is a side view of the leg 171, (b) is a front view thereof, and (c) is a side view of the caster 17. (A) is a perspective view of the pin 172, (b) is a front view of the retaining pin 173 for preventing slipping, and (c) is a side view thereof. (A) is a side view of the leg 181, and (b) is a front view thereof. It is a figure which shows the process of a promotion. It is a figure showing piping at the time of propulsion. (A) is a perspective view of the head body 52 and the main body 53, (b) is a side view of the backup pipe 55, and (c) is a rear view thereof. (A) is a rear view of the head cap 42, and (b) is a sectional view thereof. (A) is a front view of the feed / drain mud pipe sleeve 110, (b) is an end view taken along the line BB, (c) is a front view of the fluid pipe sleeve 130, and (d) is a C- It is a C-line cut end view. (A) is a front view of the propulsion jack 41, (b) is a top view thereof, and (c) is a side view thereof. 2 is a front view showing a propulsion jack 41 and a joint pipe 1. FIG. It is a perspective view of a block 165. (A) is a side view of the joint member 2 of 2nd Embodiment, (b) is a perspective view from the front, (c) is a perspective view from the back surface. It is sectional drawing which shows the joint member 2 and the excavation machine 5. FIG.

  Hereinafter, embodiments of the joint member of the present invention will be described in detail with reference to the accompanying drawings.

(First embodiment)
(Structure of joint member)
As shown in FIGS. 1 to 3, the joint member 1 includes a central pipe 10, a mud pipe 11, a mud pipe 12, fluid pipes 13, 13, 13, 13 and reinforcing plates 14, 14 arranged in the axial direction. However, it has a structure sandwiched between the plate-like front flange 15 and the rear flange 16 at both ends thereof. In the present embodiment, there are four fluid pipes 13 and two reinforcing plates 14. Further, the center pipe 10, the mud pipe 11, the exhaust pipe 12, the fluid pipes 13, 13, 13, 13, the reinforcing plates 14, 14, the front flange 15 and the rear flange 16 are steel.

  In the first embodiment, the central tube 10 is disposed near the central axis of the joint member 1. This is due to the following reason. That is, the laser beam from the laser transit 60 installed in the start shaft 6 is emitted toward the planned propulsion direction of the propulsion pipe, passes through the center pipe 10, and is arranged in the excavator 5. The laser target 54 is irradiated. By detecting the position on the laser target 54 where the laser is irradiated, it is possible to detect a positional shift of the excavator 5. In the first embodiment, the laser target 54 is disposed near the central axis of the excavator 5, and accordingly, the central tube 10 is disposed near the central axis of the joint member 1.

  The fluid pipe 13 is fixed to the outer surface of the center pipe 10 and the reinforcing plate 14 by welding. For this reason, the strength of the joint member 1 is further improved. Further, since the fluid pipe 13 is a unit integrated with the center pipe 10, the mud pipe 11 and the exhaust pipe 12, it is entangled with other electric wires and pipes, one of them presses the other, or it is bent in the middle. Or cracks can be prevented.

  As shown in FIGS. 1 to 3, the two reinforcing plates 14 and 14 are elongated and substantially rectangular plates extending in the axial direction of the joint member. It is fixed by welding. One of the long sides of the reinforcing plate 14 is fixed to the outer surface obliquely above the center tube 10 by welding. The short side of the reinforcing plate 14 protrudes obliquely upward from the outer surface obliquely above the center tube 10. Therefore, these two reinforcing plates 14 and 14 and the outer surface of the upper part of the center tube 10 form a recess 100 extending in the axial direction.

  As shown in FIGS. 1 to 3, the front flange 15 has an inner diameter that can fit the center pipe 10, the mud pipe 11, the mud pipe 12, and the fluid pipes 13, 13, 13, 13 on the rear side. It has a center opening 156, a mud opening 157, a mud opening 158, and a fluid opening 159. The state where the center pipe 10, the mud pipe 11, the exhaust pipe 12, and the fluid pipes 13, 13, 13, 13 are inserted to the depth of about half the thickness of the front flange 15 on the rear side of these openings. And fixed by welding.

  Further, the inner diameter of the front side of the mud supply opening 157 and the exhaust mud opening 158 is large enough to fit the supply / discharge mud pipe sleeve 110. The inner diameter of the fluid opening 159 on the front side is large enough to fit the fluid pipe sleeve 130.

  Moreover, since the opening part of the front flange has penetrated and the center pipe 10, the mud feed pipe 11, the exhaust mud pipe 12, and the fluid pipes 13, 13, 13, 13 are also penetrated, these are fitted and welded. Even after doing so, these openings and tubes will still penetrate.

  The front flange 15 has holes 151, 151, 151, 151 that penetrate the surface. In the first embodiment, the number of holes 151 in the front flange 15 is four.

  Further, reinforcing plates 152 and 152 for reinforcement are fixed to the rear of the front flange 15 by welding. The reinforcing plates 152 and 152 are also fixed to the central tube 10 by welding.

  Further, the rear flange 16 has substantially the same form as the front flange 15. That is, the rear flange 16 has a central opening 166 having an inner diameter on the front side capable of fitting the center pipe 10, the mud pipe 11, the mud pipe 12 and the fluid pipes 13, 13, 13, 13, It has a mud opening 167, an exhaust mud opening 168 and a fluid opening 169. Further, the center pipe 10, the mud pipe 11, the exhaust pipe 12, and the fluid pipes 13, 13, 13, 13 are inserted to a depth of about half the thickness of the rear flange 16 on the front side of these openings. In this state, it is fixed by welding.

  However, unlike the front flange 15, the rear flange 16 has four fixing plates 162, 162, 163, and 163 having horizontal surfaces in front of the rear flange 16, instead of the reinforcing plates 152 and 152, by welding. It is fixed. The fixing plates 162 and 162 are also fixed to the reinforcing plates 14 and 14 by welding. The fixing plates 163 and 163 are also fixed to the central tube 10 by welding. Further, female screw grooves are formed in the screw holes 161, 161, 161, 161 of the rear flange 16. In order to ensure the effective length of the screw holes 161, 161, 161, 161, the rear flange 16 is configured to be thicker than the front flange 15.

  The caster 17 is disposed obliquely downward from the side surface of the central tube 10 in the first embodiment.

  As shown in FIG. 4C, the leg portion 171 is inserted into the hollow, substantially rectangular parallelepiped leg receiving portion 170 protruding from the center tube 10. The leg receiving part 170 and the leg part 171 are easily fixed by inserting a pin 172 in the axial direction of the joint member 1. The distal end of the inserted pin 172 penetrates the leg receiving portion 170 and the leg 171 and protrudes to the outside. By inserting the retaining pin 173 into the retaining pin hole 174 on the side of the distal end of the pin, the pin 172 The disconnection of 172 is prevented.

  Since a plurality of pin holes 175 for inserting the pins 172 are arranged in the length direction in the leg portion 171, the leg length of the caster 17 can be changed by selecting the pin hole 175. Further, since the joint member 1 includes the plurality of leg receiving portions 170 having different lengths, the length of the legs of the casters 17 can be changed also by selecting the leg receiving portion 170.

  A nylon wheel 176 is attached to the tip of the leg 171. Nylon is suitable for the material of the wheel 176 in terms of the effect of preventing the inside of the propulsion pipe 3 from being damaged, the cost, and the durability.

  The length of the leg of the caster 17 is appropriately adjusted according to the size of the diameter of the propulsion pipe 3. The front flange 15 of the joint member 1 is connected to the excavator 5 or the immediately preceding joint member 1, and the rear flange 16 is connected to the propulsion jack 41 or the immediately following joint member 1, so that the shaft of the joint member 1 and the propulsion pipe 3 When the joint member 1 is disposed in the propulsion pipe 3 so that the axes are parallel, only the wheel 176 of the caster 17 contacts the inside of the propulsion pipe 3. At this time, the laser target 54 of the excavator 5 is disposed on the extension of the central axis of the central tube 10.

  In order to increase the strength of the caster 17, the leg receiving portion 170 of the caster 17 is fixed to the central tube 10 by welding and also welded to the outside of the mud pipe 11 or the exhaust mud pipe 12. Further, a steel reinforcing plate 177 (not shown in FIG. 1) is welded to the upper surface of the leg support 170 of the caster perpendicularly to the surface, and the reinforcing plate 177 is also welded to the central tube 10. Therefore, the strength of the caster 17 is further increased.

Next, the slip stoppers 18 and 18 will be described.
As shown in FIGS. 1 and 2, a substantially rectangular parallelepiped leg portion 181 is fitted and inserted into a hollow substantially rectangular parallelepiped leg receiving portion 180 protruding from the center tube 10. The leg receiving part 180 and the leg part 181 are easily fixed by inserting a pin 172 in the axial direction of the joint member. The inserted pin 172 penetrates the leg receiving portion 180 and the leg portion 181 and protrudes to the outside. By inserting the pin 173 for preventing removal into the retaining pin hole 174 at the side of the tip portion of the pin 172, The pin 172 is prevented from coming off.

  Since a plurality of pin holes 185 for inserting the pins 172 are arranged in the length direction in the leg portion 181, the length of the leg of the anti-slip 18 can be changed by selecting the pin hole. Further, since the joint member 1 includes a plurality of leg receiving portions 180 having different lengths, the length of the leg of the anti-slip 18 can be changed also by selecting the leg receiving portion 180.

  Nylon is suitable for the material of the tip 186 of the leg 181 because it does not damage the inside of the propulsion tube and also has an anti-slip effect.

  The length of the leg of the non-slip 18 is appropriately adjusted according to the size of the diameter of the propulsion pipe 3 and the length of the leg of the caster 17. By connecting the propulsion pipe 3 and the joint member 1 to the excavator 5, the propulsion jack 41, etc. by making the leg length of the anti-slip 18 slightly shorter than the leg length of the caster 17, for example, about 2 mm. When the axes of the propulsion tube 3 and the joint member 1 are made parallel, the anti-slip tip 186 is in a suspended state and does not come into contact with the propulsion tube 3.

  When the front flange 15 and the rear flange 16 are not connected to the other joint member 1 or the like and the joint member 1 is placed in the propelling pipe 3 as a single unit, it slides with the wheels 176 and 176 of the casters 17 and 17. The lengths of the slip stoppers 18 and 18 are adjusted so that only the tip portions 186 and 186 of the stoppers 18 and 18 are in contact with the inside of the propelling pipe 3.

  In order to increase the strength of the slip stopper 18, the leg receiving portion 180 of the slip stopper 18 is fixed to the center pipe 10 by welding and also welded to the outside of the mud pipe 11 or the mud pipe 12. Further, a steel reinforcing plate 187 (not shown in FIG. 1) is welded to an obliquely upper surface of the anti-slip leg receiving portion 180, and the reinforcing plate 187 is also welded to the central tube 10. Therefore, the strength of the slip stopper 18 is further increased.

  The protection member 19 has a substantially rectangular plate shape, and is fixed to the reinforcing plate 14 with three bolts. The protection member 19 has six screw holes to be screwed with the bolts, and the reinforcing plate 14 has three screw holes for connecting to one protection member 19. Therefore, the length by which the protective member 19 protrudes diagonally upward can be adjusted by selecting which of the six screw holes of the protective member 19 is used.

  The position of the protection member 19 and the length of the protrusion are such that the joint member 1 tilts or rolls over in the propulsion pipe 3 or is inverted, and the wheels 176 of the caster 17 and the slip stopper 18 are reversed. Only the front end portion 186 or the front end portion of the protection member 19 is adjusted so as to contact the inside of the propelling tube 3. Thereby, it is possible to prevent the reinforcing plate 14, the front flange 15, the rear flange 16, and the like from damaging the inside of the propulsion pipe 3.

  In the first embodiment, the protective member 19 is disposed on the lower side of the reinforcing plate 14. However, if there is a space in relation to other members such as the fluid pipe 13, the protective member 19 is disposed on the upper side of the reinforcing plate 14. Of course.

In addition, the length of the joint member 1 of FIG. 2A is 1205 millimeters similarly to the length of the corresponding propulsion pipe 3, and the outer diameter is 300 millimeters.
However, the length of the outer diameter joint member may be various types such as 1203 millimeters, 2433 millimeters, 2435 millimeters, and 3000 millimeters.
There are various types of outer diameters depending on the size of the propulsion pipe.

(How to use joint members)
Next, a method for using the joint member 1 in the muddy water type propulsion method will be described.

In the muddy water type propulsion method, first, as described in the section of the background art, the starting shaft 6 and the reaching shaft 7 are constructed.
Next, after surveying, the pipeline center, the propulsion plan height and the machine installation height are marked.
Further, the propulsion jack 41 is adjusted and installed in the start shaft 6 so as to correspond to the planned gradient and the planned direction.

  Next, as shown in FIG. 7 (a), the excavator 5 is connected to the propulsion jack 41, and the excavator 5 performs excavation while feeding and discharging mud with the muddy water treatment machine 80 and recirculating the muddy water. explain.

  As shown in FIG. 9, the excavator 5 includes a head body 52, a main body 53, and a backup pipe 55 in order from the front.

The leading body 52 has a cutter head 50 and a bit 51 at the tip.
The main body 53 has a laser target 54, a mud pipe 56, a mud pipe 57 and a fluid pipe 58 inside.
The backup pipe 55 has a mud pipe 56, a mud pipe 57 and a fluid pipe 58 inside, and a rear flange 59 at the rear part.

  First, the excavator 5 is suspended below the start shaft 6 and placed on the propulsion jack 41.

  Then, the head cap 42 of FIG. 10 is connected to the rear flange 59 of the backup pipe 55 by a bolt 154. The bolt passes through the hole 421 of the head cap and the screw hole 591 of the rear flange 59. Further, when connecting the rear flange 59 and the head cap 42, the mud feed opening 597, the mud discharge opening 598 and the fluid opening 599 of the rear flange 59, the mud feed opening 427 of the head cap 42, and the mud discharge opening. The sludge pipe sleeve 110 or the fluid pipe sleeve 130 is fitted between the 428 and the fluid opening 429.

  The feed / drainage pipe sleeve 110 and the fluid pipe sleeve 130 are substantially cylindrical and have two O-rings 1100 and 1300 on the outer periphery, so that each O-ring has the opening of the rear flange 59 and the head cap. The contact portion can be sealed by closely contacting the inside of the opening of 42.

  Note that the mud pipe 423 and the mud pipe 424 of the head cap 42 are rotatable with respect to the flange, and FIG. 10B is a cross-sectional view of the state in which the mud pipe 423 and the mud pipe 424 are vertical. It is.

  And the end part 4230 of the mud pipe 423 of the head cap 42 is connected with the mud feed line 61 connected to the muddy water processing machine 80 arrange | positioned in the start shaft 6 or on the ground. Moreover, the end 4240 of the mud pipe 424 of the head cap 42 is connected to the mud drain line 62 connected to the muddy water treatment machine 80 disposed in the start shaft 6 or on the ground.

  Then, the muddy water is transported from the muddy water treatment machine 80 to the chamber of the excavator 5 through the mud feed line 61, the mud feed pipe 423 of the head cap 42 and the mud feed pipe 56 of the excavator 5. As a result, the chamber of the excavator 5 is filled with muddy water, and muddy water pressure is applied to stabilize the face. The earth and sand excavated by the cutter head 50 is transported to the muddy water treatment machine 80 via the mud pipe 57 of the excavator 5, the mud pipe 424 of the head cap 42 and the mud line 62. In the muddy water treatment machine 80, the muddy water mixed with the earth and sand transported from the muddy line 62 is separated into muddy water and earth and sand and the specific gravity is adjusted, and then the muddy water is returned to the muddy line 61 again and continuously. Do excavation.

  Moreover, it is necessary to supply the excavator 5 with a chemical for ground improvement and water stopping, and a lubricant for reducing the thrust resistance by reducing the outer peripheral resistance of the propulsion pipe. Therefore, the fluid line from the chemical solution supply device or the lubricant supply device arranged in the start shaft or on the ground is connected to the fluid pipe 425 of the head cap 42 and excavated while transporting the chemical solution and the lubricant to the fluid pipe 58 of the excavator 5. I do. In addition, a chemical | medical solution and a lubricant may use two types of liquids simultaneously. In this embodiment, since the excavator 5 and the head cap 42 have four fluid pipes, when two or more kinds of chemical liquids or lubricants are used, they differ depending on the types of chemical liquids or lubricants. A fluid tube can be used.

  Further, in order to control the rotation or the like of the excavator 5, the signal electric wire 810 of the excavator 5 is connected to the operation panel 81 on the ground. Moreover, the power line of the excavator 5 is connected to a ground power source. Further, the hydraulic pipe 820 of the excavator 5 is connected to the ground hydraulic unit 82.

  At the time of propulsion, the annular portion 551 at the rear of the backup pipe 55 of the excavator 5 is brought into contact with the annular portion 410 of the propulsion jack 41 and propulsion is performed by the thrust of the propulsion jack 41.

Then, when the propulsion jack 41 pushes down the excavator 5, the excavation is temporarily stopped, and the excavator 5 is left buried, and the propulsion arm of the propulsion jack 41 is contracted again to return to the original position. Return to.
Further, the head cap 42 is removed from the rear flange 59 of the excavator 5.

  Then, on the ground, the joint member 1 in which the mud pipe 11, the mud pipe 12 and the fluid pipe 13 are integrated is placed in the propulsion pipe 3. At this time, it is possible to avoid the joint member 1 from damaging the inside of the propulsion pipe 3 by rolling the wheels 176 of the casters 17. Further, even if the joint member 1 is tilted, rolls over, or even inverted, it is possible to avoid damaging the inside of the propelling pipe 3 because of the protection member 19.

  Then, the propulsion pipe 3 containing the joint member 1 is suspended from the ground on the propulsion jack 41 at the bottom of the start shaft 6. At this time, the propelling pipe 3 is lowered in a state where the axis of the propelling pipe 3 is substantially horizontal. At this time, the joint member 1 in the propulsion pipe 3 is in a state in which the tip portions 186 and 186 of the two anti-skids 18 and 18 are in contact with the inside of the propulsion pipe. For this reason, even if the propelling pipe 3 is tilted while descending for some reason, the joint member 1 is prevented from sliding out of the propelling pipe 3 due to the frictional force of the tip 186 of the anti-slip 18. Has been.

  The mud pipe 11, the exhaust pipe 12 and the fluid pipe 13 of the joint member 1 are connected so as to be connected in a sealed state with the mud pipe 56, the exhaust pipe 57 and the fluid pipe 58 of the excavator 5. The front flange 15 of the member 1 is connected to the rear flange 59 of the machine 5. At this time, the feeding / discharging mud pipe sleeve 110 and the fluid pipe sleeve 130 are fitted to the connecting portions of the respective openings. As in the case of the connection between the rear flange 59 and the head cap 42, the connection portion is sealed by the O-ring of each sleeve.

  As a connection method at this time, the joint member 1 is pushed forward from the rear so that the supply / discharge mud pipe sleeve 110 and the fluid pipe sleeve 130 are fitted in the respective openings of the excavator 5 and the joint member 1. . At that time, the anti-slip 18 is lifted and pushed so that the rear part of the joint member 1 is slightly lifted. For this reason, in this embodiment, the caster 17 is arrange | positioned ahead and the slipper 18 is arrange | positioned back.

  The front flange 15 of the joint member 1 and the rear flange 59 of the excavator 5 are fixed by fitting a bolt 154 from the rear side of the hole 151 of the front flange 15 of the joint member 1. Although there is no thread groove in the hole 151, the screw hole 591 of the rear flange 59 of the machine 5 in the corresponding position has a female thread groove, so the bolt can be tightened without using a nut. Only the joint member and the excavator are connected and fixed.

  In this embodiment, since the joint member 1 has the caster 17 and the protection member 19, it is prevented that the inside of the propulsion pipe 3 is damaged by the joint member 1 when the joint member 1 and the excavator 5 are connected. The

  Further, the front end portion of the propulsion pipe 3 is connected to the annular portion 551 of the backup pipe 55 of the excavator 5.

  Further, the rear flange 16 of the joint member 1 is connected to the head cap 42 by a bolt 154. At this time, a screw groove is not cut in the hole 421 of the head cap 42, but since a female screw groove is cut in the screw hole 161 of the rear flange 16, the bolt 154 is fitted from the head cap 42 side. Thus, it is possible to couple without a nut. Further, sealing by fitting the feed / mud pipe sleeve 110 or the fluid pipe sleeve 130 to the connecting part of the mud feed opening, the drain mud opening, and the fluid opening is performed by the rear flange 59 of the excavator 5. This is the same as the case of the connection.

  In this way, the mud pipe 11, the mud pipe 12 and the fluid pipe 13 of the joint member 1 are connected to the mud feed line 61, the mud line 62 and the fluid line via the rear flange 16 and the head cap 42. .

  Thus, unlike the prior art, in this embodiment, the fluid pipe 13 for supplying a chemical solution or a lubricant is separate from the hydraulic pipe 820, the power line, and the signal wire 810, and a part of the joint member 1 is used. As a unit, the fluid pipe 13 is prevented from being entangled with the hydraulic pipe 820, the power line and the signal wire 810, pressed against each other, bent or cracked in the middle. .

  Furthermore, in the first embodiment, the hydraulic pipe 820, the power line, and the signal wire 810 of the excavator 5 are placed on the recess 100 at the top of the joint member 1. The recess 100 is formed in a groove shape that is surrounded by the central tube 10 and the reinforcing plate 14 and extends in the axial direction. It is prevented from being pinched, pressed, scratched or cut.

Then, the rear end portion of the propulsion pipe 3 is connected to the annular portion 410 of the propulsion jack 41.
Further, as shown in FIG. 13, a substantially rectangular parallelepiped steel block 165 is inserted into the groove between the fixing plate 162 and the fixing plate 163 of the joint member 1 and the groove portion 411 of the propulsion jack 41. Accordingly, the joint member 1 and the propulsion jack 41 are firmly fixed against the torsional stress because the torsional stress can be received in an area larger than that of the bolt. In addition, since the block 165 includes a handle portion 1651, the block 165 can be easily attached and detached by hand.

In this state, as in the previous step, excavation and propulsion are performed by the excavator 5 while the muddy water is refluxed between the chamber of the excavator 5 and the muddy water treatment machine 80.
The propulsive force is transmitted through the annular portion 410 of the propulsion jack 41 and the rear end portion of the propulsion tube 3.
At this time, laser light is emitted from the laser transit 60 arranged in the propulsion jack 41 toward the target excavation direction. The laser light passes through the central tube 11 of the joint member 1 and hits the laser target 54 of the excavator 5, so that the positional deviation of the excavator 5 can be detected.

  Thereafter, similarly, the propulsion pipe 3 and the joint member 1 are sequentially added behind the propulsion pipe 3 and the joint member 1 to perform excavation and propulsion (see FIG. 7C).

  The cutter head 50 at the tip of the excavator 5 performs excavation by rotating, but the excavator 5, the joint member 1, and the propulsion jack 41 include the front flange 15, the rear flange 16, the bolt 154, the block 165, and the like. Therefore, since the joint member 1 is welded with the reinforcing plate 14 extending in the axial direction, the so-called rolling that the joint member 1 is twisted does not occur.

(Recovery)
When the excavator 5 reaches the reach shaft 7 as shown in FIG. 7D, the excavator 5 is lifted from the reach shaft 7 and collected.

  Next, the joint member 1 is pulled out from the propelling pipe 3 to the starting shaft 6 or the reaching shaft 7. When pulling out, the caster wheel 176 rolls, so that the inside of the propelling pipe 3 is not damaged. Further, even if the joint member 1 is tilted, rolls over, or even inverted, it is possible to avoid damaging the inside of the propelling pipe 3 because of the protection member 19.

  Then, the joint member 1 is lifted from the starting shaft 6 or the reaching shaft 7 and collected. In this way, the propulsion pipe 3 is left in the ground.

(Second Embodiment)
In the second embodiment, a joint member 2 for use in a propulsion pipe having a smaller diameter than that in the first embodiment is used. As shown in FIG. 15, the structure of the joint member 2 includes fluid pipes 23 and 23, holes 251 and 251 (located in the center of the bolt in FIG. 15B), screw holes 261 and 261 (FIG. 15C). Except that the number of screw holes of the protective member 29 is half that of the joint member 1 and that the protective member 29 is arranged on the upper side of the reinforcing plate. Same as 1.

In addition, the length of the joint member 2 of Fig.15 (a) is 1005 millimeters, and an outer diameter is 230 millimeters.
However, there are various types of joint members having an outer diameter such as 1003 millimeters, 2000 millimeters, and 2003 millimeters.
There are various types of outer diameters depending on the size of the propulsion pipe.

  The method of using the joint member 2 is also substantially the same as that of the joint member 1.

  The present invention is not limited to the above-described embodiment. Each configuration of each embodiment can be appropriately combined or omitted, and can be combined with other configurations not shown.

  For example, there may be a configuration in which the number of fluid pipes, reinforcing plates, casters, slip stoppers, protective members, and the like are different from those of the above-described embodiment.

  Further, the position of the center pipe may not necessarily be near the center of the joint member depending on the positions of the laser target 54 in the excavator 5 and the laser transit 60 in the start shaft 6.

  Moreover, if the material of the wheel of a caster, the front-end | tip part of an antiskid, and a protection member is a material which does not damage the inner side of a propulsion pipe, it can also be set as Teflon, rubber | gum, etc., for example.

  Moreover, about the protrusion direction of a caster and a non-slip | skid, the structure set as lower than diagonally downward is also considered. Moreover, in the above-mentioned embodiment, although the caster and the slip stopper protrude from the center pipe, there may be a structure protruding from the mud pipe, the mud pipe, the reinforcing plate, the front flange, the rear flange, and other members. Further, depending on the connection method between the excavator and the joint member, the front-rear relationship between the caster and the slip stopper may be different from the above-described embodiment.

  Moreover, in the above-mentioned embodiment, although the protection member protrudes toward diagonally upward, it is not limited to this, There can also be the structure of an upper direction, a horizontal direction, etc. Further, the protection member may be a caster, for example, as long as it does not damage the inside of the propulsion pipe, even if it is not a plate shape.

Further, as a method for connecting the excavator and the joint member, there may be a method using not only a bolt but also a bolt and a nut and a method using a connecting hook.
In addition, the number of bolts for connecting the joint members and the like is four in the first embodiment. However, the number of bolts is not limited to this, and there may be other configurations such as two.

  Moreover, in the above-mentioned embodiment, although the joint member 1 is equipped only with one large recessed part 100 in the upper part, a several small recessed part or groove | channel is arrange | positioned in an axial direction, and it differs for every small recessed part or groove | channel. By placing or fitting the hydraulic pipe 820, the power line and the signal wire 810, it is possible to further prevent the danger that these pipes and wires are tangled with each other.

  Moreover, although the above-mentioned embodiment was about the muddy water type | formula propulsion method which circulates muddy water, the joint member of this invention can be used also in a mud type | formula propulsion method, a mud type propulsion method, etc. In this case, high-concentration muddy water or earth and sand are pumped and discharged through a mud pipe and a mud pipe, and pressurized and sucked at an appropriate pressure for pumping and discharging as necessary.

  The present invention can also be used for construction of gas pipes, underground conduits and other propulsion pipes in addition to sewerage.

  The above-described present invention can smoothly insert a fluid pipe for transporting a chemical solution or a lubricant to the position of the excavator, so in a propulsion method in which a resin pipe or a fume pipe is pushed into the ground and buried, With the above applicability.

DESCRIPTION OF SYMBOLS 1 Joint member 10 Center pipe 11 Mud pipe 12 Discharged pipe 13 Fluid pipe 14 Reinforcement plate 15 Front flange 16 Rear flange 17 Caster 18 Non-slip 19 Protective member 3 Propulsion pipe 41 Propulsion jack 42 Head cap 5 Excavator 54 Laser target 6 Starting shaft 60 Laser transit 61 Mud feed line 62 Mud discharge line 7 Reaching shaft 80 Muddy water treatment machine 81 Operation panel 810 Signal wire 82 Hydraulic unit 820 Hydraulic pipe

Claims (5)

A joint member comprising a front flange, a rear flange, a center pipe, a mud pipe, a mud pipe and a fluid pipe, having an outer shape which can be inserted into the propulsion pipe, and sequentially connecting from the excavator to the propulsion jack,
The center pipe, the mud pipe, the drain pipe and the fluid pipe arranged in the axial direction of the joint member are:
The front end is fixed in a state where the front opening is opened to the rear side of the front opening, the mud supply opening, the drainage opening, and the fluid opening, and the rear end is the center of the rear flange. It is fixed in a state where it is opened on the front side of the opening, the mud opening, the waste mud opening and the fluid opening,
The front flange and the rear flange are
A vertical surface extending in the radial direction having the central opening, the mud supply opening, the mud discharge opening, and the fluid opening that are through-holes, and a connecting part to which a fixing tool can be detachably attached. Provided, and can be connected to the excavator, another joint member, a propulsion jack or a head cap by the connecting portion.
A joint member characterized by that. Either or both of a caster and a non-slip protruding downward or obliquely downward,
The joint member according to claim 1. A protective member protruding outward from the central axis of the joint member;
The joint member according to claim 1 or 2, wherein A reinforcing plate fixed to the front flange and the rear flange by welding, wherein the reinforcing plate is fixed to one or more of the central pipe, the mud pipe, the exhaust pipe and the fluid pipe by welding. Prepare
The joint member according to any one of claims 1 to 3, wherein Connected through the block with a propulsion jack having a groove that fits into a substantially rectangular parallelepiped block,
The fixture according to the rear flange is the block;
The connecting portion according to the rear flange is a groove portion that fits into the block.
The joint member according to any one of claims 1 to 4, wherein the joint member is characterized in that

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