JP5504099B2 - Tunnel lining concrete compaction equipment - Google Patents

Description

  The present invention relates to a tunnel lining concrete compaction device.

  As a concrete compaction device, there is known one in which a mold vibration type vibrator that applies vibration to a concrete casting form is movably installed on a rail provided in the form (for example, a patent) References 1 and 2). Moreover, what fixes the said vibrator to the said rail with an electromagnet, or cancels | releases the fixation is known (for example, refer patent document 3). According to these compaction devices, the concrete in the mold can be compacted to every corner with a small number of vibrators.

JP-A-4-118464 JP 59-111892 A JP-A-60-95070

  By the way, the tunnel lining concrete is compacted by using the vibrator of the formwork vibration type. In the compaction of the tunnel lining concrete, the vibrator is fixed to the formwork so that it can be moved. It is not. Moreover, in patent documents 1-3, it does not consider about compacting tunnel lining concrete.

  The present invention has been made in view of the above circumstances, and tunnel lining can be satisfactorily compacted in tunnel lining concrete without increasing the number of form vibrators installed. An object of the present invention is to provide a concrete compaction device.

  In order to solve the above-described problems, a tunnel lining concrete compaction device according to the present invention is provided along a formwork for tunnel lining concrete, and extends along the circumferential direction of the tunnel, and is movable along the rail. And a vibrator for applying vibration to the mold, and fixing means for fixing the vibrator to the rail or releasing the fixing.

  The tunnel lining concrete compaction device may include traction means for towing the vibrator along the rail.

  In the tunnel lining concrete compaction device, the rail may include a flange portion extending in a tunnel circumferential direction. The tunnel lining concrete compaction device includes an inner guide member disposed on the inner diameter side of the tunnel from the flange portion, and is opposed to the inner guide member with the flange portion interposed between the flange portion and the outer diameter side of the tunnel. And an outer guide member arranged so as to be provided, and may further include a guide portion that guides the vibrator so as to be movable along the rail. Furthermore, in the above tunnel lining concrete compaction device, the fixing means may be arranged on the tunnel inner diameter side with respect to the flange portion, and may grip the flange portion together with the outer guide member or release the grip.

  In the above tunnel lining concrete compaction device, the fixing means may protrude from the inner guide member toward the flange portion, and the protruding amount may be variable.

  In the tunnel lining concrete compaction device, the fixing means may be a pressure contact mechanism that presses or separates a support member that supports the vibrator from the flange portion.

  In the tunnel lining concrete compaction device, the pressure contact mechanism may press both side portions of the support member in the circumferential direction of the tunnel against the flange portion. It may be a thin plate material between the parts.

  The tunnel lining concrete compaction device includes: a traction drive unit that operates the traction unit; a fixed drive unit that operates the fixing unit; a detection unit that detects a placement range of the tunnel lining concrete; and the vibrator Traction control means for controlling the traction drive unit so as to be disposed in the placement range detected by the detection means, and the fixing means in the placement range detected by the detection means. The fixed control means for controlling the fixed drive unit to be fixed to the rail by the operation, and the vibrator is operated in a state fixed to the rail by the fixing means in the placement range detected by the detection means And a vibrator control means.

  According to the above-mentioned tunnel lining concrete compaction device, it is possible to satisfactorily compact the tunnel lining concrete to every corner without increasing the number of installed form-vibration type vibrators.

It is an elevation view which shows the slide centile for tunnels provided with the tunnel lining concrete compaction apparatus which concerns on one Embodiment. It is an elevation view which expands and shows a part of compaction apparatus. FIG. 3 is a view taken along arrow 3-3 in FIG. FIG. 4 is a view on arrow 4-4 in FIG. 2. It is an elevation view which shows the compaction apparatus which concerns on other embodiment. It is an elevation view which expands and shows a part of compaction apparatus. It is a 7-7 arrow line view of FIG. FIG. 8 is a view on arrow 8-8 in FIG. 7. (A) is a 9-9 arrow line view of FIG. 8, (B) is a figure which shows the state which rotated the 90 degree from the state shown to (A). It is a figure which shows the state which rotated the lever 90 degrees from the state shown in FIG. It is a figure (11-11 arrow view of FIG. 10) which shows the state which rotated the lever 90 degrees from the state shown in FIG. (A) and (B) are the figures which expand and show a hook. It is sectional drawing which expands and shows a base board. It is an elevation view which shows the compaction apparatus which concerns on other embodiment. It is an elevation view which expands and shows a part of compaction apparatus. It is a 16-16 arrow line view of FIG. It is a 17-17 arrow line view of FIG. It is an elevation view which shows the compaction apparatus which concerns on other embodiment. It is a block diagram which shows the outline of the control system of a compaction apparatus. It is a flowchart for demonstrating opening / closing control of an electromagnetic valve and drive control of a motor by a control apparatus.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is an elevation view showing a tunnel slide centle 1 including a tunnel lining concrete compaction device (hereinafter referred to as compaction device) 10 according to an embodiment. As shown in this figure, the slide center 1 is arranged along the inner peripheral wall of the tunnel T and forms an arcuate lining space S with the inner peripheral wall. 70 and a gantry 80 that is disposed in the tunnel T and supports the mold 70. The gantry 80 moves in the axial direction of the tunnel T with a wheel (not shown) provided in the lower part.

  The mold 70 is configured by connecting arch-shaped molds extending in the tunnel circumferential direction in the tunnel axis direction. Each mold frame connects a plurality of arc-shaped skin plates 72 in the tunnel circumferential direction. Configured. The skin plate 72 disposed above the gantry 80 is supported by a jack 82 disposed above the gantry 80 so as to be movable up and down. The skin plate 72 disposed on the side of the gantry 80 is supported by a jack 84 disposed on the side of the gantry 80 so as to be movable in the tunnel radial direction. A work table 86 on which an operator rides is supported on the upper part of the gantry 80 and the jack 84.

  The compacting device 10 is attached to the skin plate 72 via a stiffener 74 and extends in the tunnel circumferential direction, a slider 60 combined with the rail 20 so as to be movable in the tunnel circumferential direction, and fixed to the slider 60. Vibrator 30 guided to be movable along rail 20 by slider 60, traction mechanism 40 for pulling vibrator 30 along rail 20, and fixing for fixing slider 60 to rail 20 and releasing the fixation. And a mechanism 50. By operating the vibrator 30 in a state in which the slider 60 is fixed to the rail 20 by the fixing mechanism 50, the lining concrete can be vibrated through the rail 20 and the mold frame 70, and the lining concrete can be compacted.

  The rail 20 is a member obtained by curving H-shaped steel in an arc shape, and a pair of flange portions 22 and 24 provided on the rail 20 are arranged in parallel in the tunnel radial direction and extend in the tunnel circumferential direction. The slider 60 is attached to the flange portion 22 so as to be movable in the tunnel circumferential direction. The vibrator 30 is fixed to the surface of the slider 60 on the tunnel inner diameter side.

  The pulling mechanism 40 includes a wire 42 having one end fixed to the slider 60, a counterweight 44 fixed to the other end of the wire 42, and a plurality of sheaves 46 on which the wire 42 is laid. The plurality of sheaves 46 are arranged at intervals in the circumferential direction of the tunnel, and the counterweight 44 is suspended from the sheave 46 arranged on the uppermost side. For this reason, when the operator pulls up the vibrator 30, the gravity of the counterweight 44 and the force of the operator are superimposed, thereby reducing the burden on the operator.

  The fixing mechanism 50 includes a pair of shaft members 52 that are screwed into the slider 60. The pair of shaft members 52 are arranged apart from each other in the tunnel circumferential direction, and the vibrator 30 is arranged between them.

  FIG. 2 is an elevation view showing a part of the compacting device 10 in an enlarged manner. 3 is a view taken along the arrow 3-3 in FIG. 2, and FIG. 4 is a view taken along the arrow 4-4 in FIG. As shown in these drawings, the slider 60 includes a base plate 62 to which the vibrator 30 is fixed, and a pair of L-shaped guide members 64 provided on the back surface of the mounting surface of the vibrator 30 on the base plate 62. ing.

  As shown in FIG. 4, the base plate 62 and the guide member 64 form a channel-type cross-sectional slider 60, and the flange portion 22 is fitted between the base plate 62 and the pair of guide members 64. Yes. The guide portion 64A on the distal end side of the pair of guide members 64 is opposed to the base plate 62 via the flange portion 22 in the tunnel radial direction, and the guide portion 64A and the base plate 62 allow the slider 60 to move in the tunnel circumferential direction. Travel to is guided.

  Here, the rail 20 is curved in accordance with the curvature of the tunnel T, whereas the base plate 62 and the guide portion 64A are flat. Therefore, in order to enable the slider 60 to move along the rail 20, the distance between the base plate 62 and the guide portion 64 </ b> A is set larger than the thickness of the flange portion 22, and the space between the base plate 62 and the flange portion 22 is set. The clearance between the guide portion 64A and the flange portion 22 is sufficiently secured.

  As shown in FIGS. 2 and 3, bosses 66 are formed on both sides of the base plate 62 across the vibrator 30. The boss 66 is formed with a screw hole that also penetrates the base plate 62, and the shaft member 52 of the fixing mechanism 50 is screwed into the screw hole. The shaft member 52 protrudes from the boss 66 toward the inner diameter side of the tunnel, and a lever 54 is attached to the tip portion thereof. The lever 54 extends from the shaft member 52 in the radial direction.

  Here, when the lever 54 is rotated, the shaft member 52 moves to the tunnel inner diameter side or outer diameter side, and the protrusion amount of the shaft member 52 from the base 62 to the flange portion 22 side changes. When the protrusion amount is increased, the shaft member 52 comes into contact with the flange portion 22, the guide portion 64 </ b> A is drawn toward the flange portion 22, and finally comes into contact with the flange portion 22. As a result, the flange portion 22 is gripped by the shaft member 52 and the guide portion 64 </ b> A, and the vibrator 30 is fixed to the rail 20. On the other hand, when the protrusion amount is decreased, the gripping force between the shaft member 52 and the guide portion 64A is weakened by moving the shaft member 52 away from the guide portion 64A, and the fixation of the vibrator 30 to the rail 20 is released. Is done.

  As described above, in the compaction device 10 according to the present embodiment, the mold vibration type vibrator 30 is moved along the rail 20 extending in the tunnel circumferential direction by the traction mechanism 40, and the tunnel mechanism is rotated by the fixing mechanism 50. The vibrator 30 can be fixed to the rail 20 at any position in the direction, or the fixing can be released. Therefore, it is possible to satisfactorily compact the tunnel lining concrete over the entire lining space S without increasing the number of installation of the form vibration vibrator 30.

  Further, the slider 60 is provided with a base plate 62 disposed on the tunnel inner diameter side from the flange portion 22 and a guide member 64 disposed on the tunnel outer diameter side from the flange portion 22, and these sandwich the flange portion 22. However, the shaft member 52 protruding from the base plate 62 and having a variable protruding amount grips the flange portion 22 together with the guide member 64 or releases the grip. Here, in this embodiment, the shaft member 52 is a screw screwed to the base plate 62. Therefore, the vibrator 30 can be fixed to the rail 20 at an arbitrary position in the circumferential direction of the tunnel with a simple configuration, or the fixing can be released.

  In this embodiment, the guide members disposed on the tunnel inner diameter side and the tunnel outer diameter side from the flange portion 22 are plate materials, but may be rollers, and the base plate 62 is the guide member. Instead, other guide members may be provided separately. Moreover, it is not essential that the rail 20 is made of H-shaped steel, and for example, a member having a T-shaped cross section may be used.

  FIG. 5 is an elevation view showing a compaction device 100 according to another embodiment. As shown in this figure, the compacting device 100 is fixed to the skin plate 72 and a rail 120 extending in the tunnel circumferential direction, a slider 160 combined with the rail 120 so as to be movable in the tunnel circumferential direction, and the slider 160 to be fixed. The vibrator 30, the traction mechanism 140 that pulls the vibrator 30 along the rail 120, and the fixing mechanism 150 that fixes the slider 160 to the rail 120 and releases the fixing thereof. By operating the vibrator 30 in a state where the slider 160 is fixed to the rail 120 by the fixing mechanism 150, the lining concrete can be vibrated through the rail 120 and the formwork 70, and the lining concrete can be compacted.

  The rail 120 is T-shaped steel, and the flange portion 122 provided at the end portion of the rail 120 on the inner diameter side of the tunnel extends in the tunnel circumferential direction. The slider 160 is attached to the flange portion 122 so as to be movable in the tunnel circumferential direction. Vibrator 30 is fixed to the surface of slider 160 on the inner diameter side of the tunnel.

  The traction mechanism 140 includes a wire 142 having both ends fixed to the slider 160, a direction changing sheave 143 provided at both ends of the rail 120, a return sheave 145 provided in the vicinity of the lower sheave 143, An electric winch 144 and a tensioner 147 provided between the upper sheave 143 and the gantry 80 are provided. The wire 142 is stretched by upper and lower sheaves 143, a return sheave 145, a tensioner 147, and an electric winch 144, and is passed between the flange portion 122 and the skin plate 72. In addition, the wire 142 passes through the front side in the figure from the rail 120 between the slider 160 and the upper and lower sheaves 143, but the back side in the figure from the rail 120 between the return sheave 145 and the electric winch 144. Has been passed. Further, tension is applied to the wire 142 by a tensioner 147. For this reason, when the electric winch 144 is operated and the wire 142 is wound up, the slider 160 and the vibrator 30 are pulled.

  The fixing mechanism 150 includes a pair of levers 152 that are rotatably provided on the slider 160. The pair of levers 152 are arranged apart from each other in the tunnel circumferential direction, and the vibrator 30 is arranged between them.

  FIG. 6 is an elevational view showing a part of the compacting device 100 in an enlarged manner. 7 is a view taken along arrow 7-7 in FIG. 6, and FIG. 8 is a view taken along arrow 8-8 in FIG. Moreover, FIG. 9 (A) is a 9-9 arrow line view of FIG. As shown in these drawings, the slider 160 includes a base plate 162 to which the vibrator 30 is fixed, a frame 164 that supports the base plate 162 on the rail 120, and a pair of guide rollers 166 that are rotatably supported by the frame 164. And two pairs of guide rollers 168.

  The frame 164 includes a pair of side plates 164A and 164B and a pair of base plates 164C and 164D that couple the pair of side plates 164A and 164B. The pair of side plates 164A and 164B are disposed apart from each other in the width direction of the flange portion 122, and the flange portion 122 is disposed therebetween. Further, the pair of base plates 164C and 164D are arranged on the inner diameter side of the tunnel from the flange portion 122 and spaced apart in the circumferential direction of the tunnel, and the vibrator 30 is arranged therebetween.

  A pair of shackles 172 is attached to the side plate 164A. The pair of shackles 172 are arranged apart from each other in the circumferential direction of the tunnel, and a wire 142 is fixed to each shackle 172.

  The base plate 162 is disposed between the pair of base plates 164 </ b> C and 164 </ b> D and the flange portion 122. Here, shafts 174 are fixed to the four corners of the rectangular base plate 162, and the shafts 174 are inserted through the base plates 164C and 164D. Thereby, the base plate 162 is movable in the tunnel radial direction between the base plates 164C and 164D and the flange portion 122.

  The pair of guide rollers 166 is disposed on the inner diameter side of the tunnel from the flange portion 122 so as to be separated from the circumferential direction of the tunnel, and the vibrator 30 is disposed therebetween. The pair of guide rollers 166 are rotatably supported by the pair of side plates 164A and 164B. The two pairs of guide rollers 168 are arranged on the outer diameter side of the tunnel from the flange portion 122, of which a pair of guide rollers 168 are rotatably supported by the side plate 164A, and the other pair of guide rollers 168 are The side plate 164B is rotatably supported. Each pair of guide rollers 168 is spaced apart in the circumferential direction of the tunnel, and faces the base plate 162 via the flange portion 122.

  Further, the pair of levers 152 are arranged apart from the flange portion 122 on the inner diameter side of the tunnel in the circumferential direction of the tunnel, and the vibrator 30 is arranged therebetween. One lever 152 is rotatably supported by the base plate 164C, and the other lever 152 is rotatably supported by the base plate 164D. The lever 152 includes a rotating shaft 152A rotatably attached to the base plates 164C and 164D, and a holding shaft 152B and a cam shaft 152C extending in the radial direction from the rotating shaft 152A. The holding shaft 152B and the cam shaft 152C are disposed at right angles to each other.

  The lever 152 can rotate 90 °. When the lever 152 is rotated so that the cam shaft 152C extends in the width direction of the rail 120 and the holding shaft 152B extends on the opposite side of the vibrator 30 in the tunnel circumferential direction, the slider 160 is fixed to the rail 120 by the fixing mechanism 150. It will be in the state (henceforth an open state) which is not carried out.

  In the open state, the slider 160 approaches the inner diameter side of the tunnel due to the weight of the vibrator 30 or the like, so that the guide roller 168 comes into contact with the flange portion 122. In this state, the gap between the base plate 162 and the guide roller 168 is set so that a gap is formed between the base plate 162 and the flange portion 122. In this state, the gap between the guide roller 166 and the guide roller 168 is set so that a gap is formed between the guide roller 166 and the flange portion 122.

  As shown in FIG. 7, a rectangular notch 164E is formed between the pair of shafts 174 in the base plates 164C and 164D. The distance from the rotating shaft 152A to the notch 164E is set to be shorter than the length of the cam shaft 152C. When the lever 152 is rotated 90 ° counterclockwise from the position shown in the drawing, the tip of the cam shaft 152C is moved. , And moves up to the notch 164E.

  In addition, hooks 180 are provided on the base plates 164C and 164D, respectively. The hook 180 is disposed near the tip of the cam shaft 152C and outside the movable range of the cam shaft 152C, and locks the holding shaft 152B and releases the lock. When the hook 180 locks the holding shaft 152B, the lever 152 is stopped.

  A pair of cams 154 are fixed to the base plate 162. Each cam 154 is a plate material arranged in each notch 164E and protrudes to the height of the cam shaft 152C. In the opened state, each cam 154 is arranged in parallel with the cam shaft 152C.

  FIG. 9A shows the lever 152 and the cam 154 in the opened state. As shown in this figure, a flat portion 154A that is parallel to the cam shaft 152C and a tapered portion 154B that is inclined with respect to the cam shaft 152C are formed on the upper surface of the cam 154. The flat portion 154A is disposed so as to overlap the rotating shaft 152A in the tunnel circumferential direction. Further, the tapered portion 154B is an inclined surface having a downward slope from the flat portion 154A to the outer diameter direction of the rotation shaft 152A, and is arranged so as to be aligned with the cam shaft 152C in the tunnel circumferential direction in the opened state shown in FIG.

  FIG. 9B is a diagram illustrating a state in which the lever 152 is rotated by 90 ° from the state illustrated in FIG. 10 and 11 are views showing a state in which the lever 152 is rotated by 90 ° from the state shown in FIGS. As shown in these figures, when the lever 152 is rotated 90 ° from the position in the open state, the cam shaft 152C of the lever 152 abuts against the tapered portion 154B and pushes down the cam 154 toward the flange portion 122, and finally flat. Ride on part 154A. As a result, the base plate 162 comes into contact with the flange portion 122, and the slider 160 is fixed to the rail 120 by the fixing mechanism 150 (hereinafter referred to as a fixed state).

  12A and 12B are views showing the hook 180 in an enlarged manner. As shown in this figure, the hook 180 includes a rotating shaft 182 that is rotatably supported by the base plates 164C and 164D, a locking portion 183 and a holding portion 184 that are attached to the tip of the rotating shaft 182, and a rotating shaft 182. And a compression coil spring 188 that is disposed between the nut 186 and the base plates 164C and 164D and through which the rotary shaft 182 is inserted. In addition, a stopper 189 is provided at the central portion of the rotating shaft 182 in the axial direction.

  The rotating shaft 182 can move in the axial direction, and the amount of movement is limited by the nut 186 and the stopper 189. The rotating shaft 182 is biased toward the flange portion 122 by a compression coil spring 188. The locking portion 183 is a member that extends in the radial direction of the rotating shaft 182 and has a curved front end.

  When the lever 152 is fixed by the hook 180, the hook 180 is moved to the opposite side of the flange portion 122 against the urging force of the compression coil spring 188 as shown in FIG. Then, as shown in FIG. 12B, the hook 180 is rotated 90 ° around the rotation shaft 182 to move the locking portion 183 onto the holding shaft 152B, and then the hook 180 is attached to the compression coil spring 188. It is moved to the flange portion 122 side by force. Thereby, the lever 152 is fixed by the hook 180.

  On the other hand, when releasing the fixation of the lever 152 by the hook 180, the hook 180 is moved to the opposite side of the flange portion 122 against the urging force of the compression coil spring 188. Then, the hook 180 is rotated 90 ° around the rotation shaft 182 to move the locking portion 183 to a position where it does not overlap the holding shaft 152B, and then the hook 180 is moved to the base of the rotation shaft 182 by the urging force of the compression coil spring 188. Move to the end side. Thereby, fixation of the lever 152 by the hook 180 is cancelled | released.

  FIG. 13 is an enlarged cross-sectional view of the base plate 162. As shown in this figure, the base plate 162 is a plate material having different thicknesses between the both ends in the tunnel circumferential direction to which the cam 154 is fixed and the thickness t1 between the two ends. Is bigger than.

  For this reason, the thin region of the thickness t2 in the base plate 162 is lower in rigidity than the thick region of the thickness t1 on both sides thereof, and is easily elastically deformed. Therefore, the flange portion 122 is curved with a predetermined curvature. Adhesion increases. Thereby, a clearance gap can be reduced between the base board 162 and the flange part 122, the resonance of the rail 120 and the slider 160 can be suppressed, and a noise can be reduced.

  Further, the thick region of thickness t1 in the base plate 162 has higher rigidity than the thin region of thickness t2 between them, and is difficult to elastically deform, so that it is difficult to absorb vibration energy. Thereby, the vibration energy of the vibrator 30 can be efficiently transmitted to the lining concrete, and the lining concrete can be compacted with high energy efficiency.

  As described above, in the compaction device 100 according to the present embodiment, the mold vibration type vibrator 30 is moved by the traction mechanism 140 along the rail 120 extending in the tunnel circumferential direction, and the fixing mechanism 150 is used to move the tunnel circumference. It can be fixed to the rail 120 at any position in the direction or can be released. Therefore, it is possible to satisfactorily compact the tunnel lining concrete over the entire lining space S without increasing the number of installation of the form vibration vibrator 30.

  Further, the slider 160 is provided with a guide roller 166 disposed on the tunnel inner diameter side from the flange portion 122 and a guide roller 168 disposed on the tunnel outer diameter side from the flange portion 122, and these sandwich the flange portion 122. In the meantime, the pressure contact mechanism composed of the lever 152 and the cam plate 154 causes the base plate 162 to be pressed against or separated from the flange portion 122. As a result, the base plate 162 grips or opens the flange portion 122 together with the guide roller 168. Therefore, it is possible to fix the vibrator 30 to the rail 120 at an arbitrary position in the circumferential direction of the tunnel and to release the fixing with a simple configuration.

  In the present embodiment, the guide members arranged on the tunnel inner diameter side and the tunnel outer diameter side from the flange portion 122 are rollers, but may be plates, and the base plate 162 may be a guide member. Good. Moreover, it is not essential that the rail 120 be T-shaped steel. For example, the rail 120 may be replaced with a member having an H-shaped cross section.

  FIG. 14 is an elevation view showing a compaction device 200 according to another embodiment. As shown in this figure, the compaction device 200 includes a traction mechanism 240 in place of the traction mechanism 140 of the compaction device 100 described above. The traction mechanism 240 includes a chain 242 disposed along the flange portion 122 and a drive mechanism 244 that moves the slider 160 along the chain 242.

  FIG. 15 is an elevation view showing a part of the compacting device 200 in an enlarged manner. 16 is a view taken along arrow 16-16 in FIG. 15, and FIG. 17 is a view taken along arrow 17-17 in FIG. As shown in these drawings, the drive mechanism 244 includes a sprocket 243 that meshes with the chain 242, a screw gear 245 that is arranged coaxially with the sprocket 243, a worm 246 that meshes with the screw gear 245, and a worm wheel that meshes with the worm 246. 247 and a chain wheel 248 arranged coaxially with the worm wheel 247.

  The sprocket 243 and the screw gear 245 are rotatably supported by the side plate 164A. The sprocket 243 is disposed between the side plate 164A and the rail 120, and the screw gear 245 is disposed on the opposite side of the sprocket 243 across the side plate 164A.

  The worm wheel 247 and the chain wheel 248 are rotatably supported by the side plate 164A. A worm 246 is disposed between the worm wheel 247 and the screw gear 245, and the worm 246 and the worm wheel 247 constitute a worm self-locking gear. A chain 249 is wound around the chain hole 248.

  The pulling mechanism 240 having the above-described configuration is operated when the operator rotates the chain wheel 248 with the chain 249. When the chain wheel 248 rotates, the rotational force is transmitted to the sprocket 243 by the worm wheel 247, the worm 246, and the screw gear 245, and the sprocket 243 engaged with the chain 242 travels while rotating. Thereby, the slider 160 and the vibrator 30 are pulled.

  FIG. 18 is an elevation view showing a compaction device 300 according to another embodiment. FIG. 19 is a block diagram showing an outline of a control system of the compaction device 300. As shown in these drawings, the compaction device 300 includes a plurality of filling detection sensors 302A to 302D and a control device 304 in addition to the above-described configuration of the compaction device 100, and the compaction device 100. A fixing mechanism 350 is provided instead of the fixing mechanism 150.

  The filling detection sensors 302A to 302D are capacitance detection sensors attached to the tip of a slide bar that can be taken in and out of the lining space S from the mold 70, and in the lining space S according to the change in capacitance. The concrete filling is detected and a sensing signal is output to the control device 304. The filling detection sensors 302A to 302D are arranged at predetermined intervals in the tunnel circumferential direction. Further, the filling detection sensors 302A to 302D are arranged in the order of 302A, 302B, 302C, and 302D from the bottom side to the top side of the tunnel T.

  The fixing mechanism 350 includes a hydraulic jack 352. The hydraulic jack 352 is provided with an electromagnetic valve 354. The electromagnetic valve 354 opens in an unexcited state, and in this state, the hydraulic jack 352 presses the base plate 162 against the flange portion 122. Further, the electromagnetic valve 354 is closed in an excited state, and the hydraulic jack 352 is separated from the flange portion 122 in this state.

  The control device 304 is provided on a control panel installed on the slide center 1, and controls the opening and closing of the electromagnetic valve 354 of the hydraulic jack 352 based on the detection results of the filling detection sensors 302A to 302D. The driving of the motor 144M of 144 is controlled. The control device 304 controls the vibrator 30 to be turned on and off.

  Here, the vibrator 30 is stopped at a plurality of stop positions (first to fourth stop positions), and is operated for a predetermined time at each stop position. The plurality of stop positions are set at predetermined intervals in the tunnel circumferential direction. The first stop position is set at an intermediate point from the bottom end of the lining space S to the filling detection sensor 302A, and the second stop position is set at an intermediate point from the filling detection sensor 302A to the filling detection sensor 302B. ing. Further, the third stop position is set at an intermediate point from the filling detection sensor 302B to the filling detection sensor 302C, and the fourth stop position is set at an intermediate point from the filling detection sensor 302C to the filling detection sensor 302D. Yes.

  FIG. 20 is a flowchart for explaining the opening / closing control of the electromagnetic valve 354 and the drive control of the motor 144 by the control device 304. This flow is started when an operator operates a switch for instructing the start of placing of lining concrete provided on the control panel.

  As will be described later, after the lining concrete is compacted to the upper part of the tunnel T, the vibrator 30 is moved to the initial position. Here, the initial position is set to the first stop position described above. In the initial state, the solenoid valve 354 is not excited, and the hydraulic jack 352 presses the base plate 162 against the flange portion 122.

  In this flow, first, in step 1, the control device 304 determines whether or not the filling of the lining concrete is detected by the filling sensor 302 </ b> A arranged on the bottom side among the filling sensors 302 </ b> A to 302 </ b> D. . As a result, when an affirmative determination is made, the process proceeds to step 2. In step 2, the control device 304 turns on the vibrator 30. Thereby, the vibration is applied from the vibrator 30 to the covering concrete filled in the range from the bottom end of the covering space S to the filling sensor 302A.

  Next, in step 3, the control device 304 determines whether or not a predetermined time T has elapsed since the vibrator 30 was turned on in step 2. Here, the predetermined time T is a time required for the vibrator 30 to compact the lining concrete. As a result, when an affirmative determination is made, the routine proceeds to step 4.

  In step 4, the control device 304 turns off the vibrator 30 and excites the electromagnetic valve 354 to release the fixing of the vibrator 30 to the rail 120 by the hydraulic jack 352. Next, in Step 5, the control device 304 operates the motor 144M of the electric winch 144 to move the vibrator 30 to the second stop position, and releases the excitation of the electromagnetic valve 354. Thereby, the vibrator 30 is fixed to the rail 120 by the hydraulic jack 352 at the second stop position.

  Next, in step 6, the control device 304 determines whether or not a sensing signal has been received from the filling sensor 302B, and proceeds to step 7 if an affirmative determination is made. In step 7, the control device 304 turns on the vibrator 30. Thereby, vibration is applied from the vibrator 30 to the covering concrete filled in the range from the filling detection sensor 302A to the filling detection sensor 302B of the lining space S.

  Next, in step 8, the control device 304 determines whether or not the predetermined time T has elapsed since the vibrator 30 was turned on in step 7. As a result, when an affirmative determination is made, the process proceeds to step 9. In step 9, the control device 304 turns off the vibrator 30 and excites the electromagnetic valve 354 to release the fixation of the vibrator 30 to the rail 120 by the hydraulic jack 352. Next, in step 10, the control device 304 operates the motor 144M of the electric winch 144 to move the vibrator 30 to the third stop position, and releases the excitation of the electromagnetic valve 354. Thereby, vibrator 30 is fixed to rail 120 by hydraulic jack 352 at the third stop position.

  Next, in step 11, the control device 304 determines whether or not it has received a sensing signal from the filling sensor 302C, and proceeds to step 12 if an affirmative determination is made. In step 12, the control device 304 turns on the vibrator 30. Thereby, vibration is applied from the vibrator 30 to the covering concrete filled in the range from the filling detection sensor 302B to the filling detection sensor 302C of the lining space S.

  Next, in step 13, the control device 304 determines whether or not the predetermined time T has elapsed since the vibrator 30 was turned on in step 12. As a result, when an affirmative determination is made, the routine proceeds to step 14. In step 14, the control device 304 turns off the vibrator 30 and excites the electromagnetic valve 354 to release the fixing of the vibrator 30 to the rail 120 by the hydraulic jack 352. Next, in step 15, the control device 304 operates the motor 144M of the electric winch 144 to move the vibrator 30 to the fourth stop position, and releases the excitation of the electromagnetic valve 354. Thereby, vibrator 30 is fixed to rail 120 by hydraulic jack 352 at the fourth stop position.

  Next, in step 16, the control device 304 determines whether or not a sensing signal has been received from the filling sensor 302D. If an affirmative determination is made, the process proceeds to step 17. In step 17, the control device 304 turns on the vibrator 30. Accordingly, vibration is applied from the vibrator 30 to the covering concrete filled in the range from the filling detection sensor 302C to the filling detection sensor 302D of the lining space S.

  Next, in step 18, the control device 304 determines whether or not the predetermined time T has elapsed since the vibrator 30 was turned on in step 18. As a result, when an affirmative determination is made, the routine proceeds to step 19. In step 19, the control device 304 turns off the vibrator 30 and excites the electromagnetic valve 354 to release the fixing of the vibrator 30 to the rail 120 by the hydraulic jack 352. Next, in step 20, the control device 304 operates the motor 144M of the electric winch 144 to move the vibrator 30 to the first stop position, and releases the excitation of the electromagnetic valve 354. As a result, the vibrator 30 is fixed to the rail 120 by the hydraulic jack 352 at the first stop position. This flow is complete | finished above.

  As described above, the compaction device 300 according to the present embodiment can automate the movement of the vibrator 30 and the fixation of the vibrator 30 to the rail 120 in the compaction device 100 described above.

  In this embodiment, as the filling detection sensors 302A to 302D, a capacitance detection sensor attached to the tip of a slide bar that can be taken in and out from the mold 70 into the lining space S is used. That is, a capacitance detection sensor embedded in the mold 70 may be used so that the wall surface of the mold 70 facing the lining space S and the sensor surface are flush with each other.

1 slide center, 10 tunnel lining concrete compaction device, 20 rail, 22, 24 flange, 30 vibrator, 40 towing mechanism (traction means), 42 wire, 44 counterweight, 46 sheave, 50 fixing mechanism (fixing means) , 52 shaft member (protruding member), 60 slider (guide portion), 62 base plate (inner guide member), 64 guide member (outer guide member), 64A guide portion, 66 boss, 70 mold frame, 72 skin plate, 80 Gantry, 82, 84 Jack, 86 Worktable, 100
Tunnel lining concrete compaction device, 120 rail, 122 flange, 140
Traction mechanism (traction means), 142 wire, 143 sheave, 144 electric winch, 144M motor (traction drive unit), 145 return sheave, 147 tensioner, 150 fixing mechanism (fixing means), 152 lever (pressure contact mechanism), 152A Rotating shaft , 152B holding shaft, 152C cam shaft, 154 cam plate (pressure contact mechanism), 154A flat portion, 154B taper portion, 160 slider (guide portion), 162 base plate, 164 frame, 164A, 164B side plate, 164C, 164D base plate, 164E Notch portion, 166 guide roller (inner guide member), 168 guide roller (outer guide member), 172 shackle, 174 shaft, 180 hook, 182 rotating shaft, 183 locking portion, 184 holding portion, 186 nut, 188 compression Coil spring, 189 stopper 200 Tunnel lining concrete compaction device, 240 pulling mechanism (traction means), 242 chain, 243 sprocket, 244 drive mechanism, 245 screw gear, 246 worm, 247 worm wheel, 248 chain wheel, 249 chain, 300 tunnel covering Work concrete compaction device, 302A to D Filling detection sensor (detection means), 304 control device (traction control means, fixing control means, vibrator control means), 350 fixing mechanism (fixing means), 352 hydraulic jack, 354 solenoid valve ( Fixed drive unit)

Claims (7)

A rail provided along the formwork for tunnel lining concrete and extending in the circumferential direction of the tunnel;
A vibrator that is movably provided along the rail and that vibrates the formwork;
Fixing means for fixing the vibrator to the rail or releasing the fixing;
Tunnel lining concrete compaction device.   The tunnel lining concrete compaction device according to claim 1, further comprising traction means for traction of the vibrator along the rail. The rail has a flange portion extending in the circumferential direction of the tunnel,
An inner guide member disposed on the inner diameter side of the tunnel from the flange portion, and an outer guide member disposed on the outer diameter side of the tunnel from the flange portion so as to face the inner guide member with the flange portion interposed therebetween. And further comprising a guide part for guiding the vibrator so as to be movable along the rail,
3. The tunnel lining concrete compaction device according to claim 1, wherein the fixing unit is disposed closer to the inner diameter of the tunnel than the flange portion, and grips the flange portion together with the outer guide member or releases the grip. .   The tunnel lining concrete compaction device according to claim 3, wherein the fixing means is a protruding member that protrudes from the inner guide member toward the flange portion and has a variable protrusion amount.   The tunnel lining concrete compaction device according to claim 3, wherein the fixing means is a pressure contact mechanism that presses or separates a support member that supports the vibrator from the flange portion. The press contact mechanism is configured to press both side portions of the support member in the circumferential direction of the tunnel to the flange portion,
The tunnel lining concrete compaction device according to claim 5, wherein the support member is a thin plate between the both side portions in the circumferential direction of the tunnel. A traction drive for operating the traction means;
A fixed drive for operating the fixing means;
Detecting means for detecting the placement range of the tunnel lining concrete;
Traction control means for controlling the traction drive unit so that the vibrator is disposed in the placement range detected by the detection means;
Fixing control means for controlling the fixed drive unit so that the vibrator is fixed to the rail by the fixing means in the placement range detected by the detecting means;
Vibrator control means for operating the vibrator while being fixed to the rail by the fixing means in the placement range detected by the detecting means;
The tunnel lining concrete compaction device according to any one of claims 2 to 6, further comprising:

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