JPH07180494A - Lining device for tunnel - Google Patents

Abstract

PURPOSE:To improve the follow-up property after the shape change of a tunnel inner wall by providing a lift device capable of vertically moving a swivel arm at one end section of a main body, and connecting a mobile formwork to the tip section of the swivel arm rockably in two perpendicular plane directions. CONSTITUTION:Control signals are outputted from a controller 1 to a lift cylinder 17 and an expansion cylinder 31 based on the information such as the excavation cross sectional shape of a tunnel 2, the finished size after lining, the lining concrete thickness, and the lining starting position stored in the controller 11 in advance. When the control signal is inputted to the lift cylinder 17, a piston rod 18 is extended, a moving frame 19 fixed at its upper end is lifted, a support arm 20 and a connecting arm 26 protruded on the side of the frame 19 are likewise lifted, and a vertically turning mechanism 4 and a mobile formwork 5 provided at the tip of a swivel arm 27 are integrally lifted. When the control signal is inputted to the expansion cylinder 31, a piston rod 32 is extended, a head arm 30 surrounding the piston rod 32 and an intermediate arm 29 are extended, a rack 40 fixed at its tip is rotated, and a mobile formwork 5 rockably installed on the rack 40 is integrally moved.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention allows a movable formwork to follow changes in the shape of the inner wall surface of a tunnel and changes in the cross-sectional shape, and prevents the formwork and the lining concrete from shifting, thereby providing good lining concrete. The present invention relates to a tunnel lining device capable of forming a tunnel.

[0002]

2. Description of the Related Art Conventionally, various devices of this kind have been proposed. For example, in Japanese Examined Patent Publication No. 26040/1990, a movable body that can run in a tunnel is provided with a support so as to be rotatable and extendable. A movable form with a belt that can be orbited is provided at the tip of the moving body, concrete is filled between the belt and the inner wall surface of the tunnel, and when the concrete hardens to some extent, the form is moved to cover the lining concrete. It is shown to be formed.

In Japanese Patent Publication No. 3-58440,
A rod is mounted on a self-propelled vehicle that can run in a tunnel so that the rod can be swung and expanded and contracted, and a form frame provided with a belt that can circulate is provided at the tip of the rod, and a plurality of rollers are urged to the outside inside the belt. The roller is pressed against the ground side by these rollers, and the concrete filling between the belt and the inner wall of the tunnel is brought into close contact with the ground to form high-quality lining concrete. Has been done.

However, in all of these devices, the mold is swingably connected to the support or rod and the cylinder, but its operation is limited to the direction orthogonal to the pivot axis, and the complex motion of the mold is involved. In addition to being unable to fully respond to the above, they are subject to torsion and bending moments due to the complicated movement of the formwork,
I was worried about its support strength. Moreover, since the belts of these formwork cannot adjust the length and tension of the circling side that contacts the lining concrete, the formwork cannot be moved in response to the change in the shape of the tunnel cross section, and therefore The belt tension to the surface becomes excessive or insufficient, and the belt may be wrinkled, or the belt and the lining concrete may be displaced from each other, and the concrete surface may be uneven or cracked. Furthermore, since the turning radius of the movable formwork is adjusted by a single turning arm, there is a problem that the turning arm becomes large and this type of device is promoted in size.

[0005]

SUMMARY OF THE INVENTION The present invention solves such a problem and makes the movable formwork follow the changes in the shape of the inner wall surface of the tunnel and the change in the cross-sectional shape, and at the same time, Prevents displacement and obtains a uniform lining surface,
Moreover, this type of device can be downsized and the nozzle operation can be facilitated, and the rational support structure of the movable formwork and the tunnel effective means for forming lining concrete on the top end and the lower end of the side wall An object is to provide a lining device.

[0006]

For this reason, the tunnel lining device of the present invention has a main body provided with a traveling means capable of moving on a road surface, and a base portion fixed to the main body to form a circular inner peripheral surface of the tunnel. An expandable and retractable swivel arm that moves in the circumferential direction, a movable formwork that is swingably connected to the tip of the arm, and a rotatably provided circumferentially turnable end of the formwork are provided on the inner surface of the lining concrete space. A belt movable along, and provided on the formwork,
Further, in a tunnel lining device provided with a nozzle capable of spraying concrete toward the lining concrete space, a lifting device capable of vertically moving a turning arm is provided at one end of the main body, and a tip of the turning arm. A swingable arm is connected to the section so that it can swing in two mutually orthogonal plane directions, making it possible to make the swivel arm compact, and to accommodate the lining of large and small tunnels. It is characterized by expanding the degree of freedom and improving the ability to follow changes in the shape of the inner wall of the tunnel. Further, according to the present invention, the main body is provided with an outrigger and a side jack, the position of the main body can be adjusted, and the main body is firmly held to improve the stability of movement of the movable formwork. It is characterized by that. The present invention is characterized in that the elevating device is provided so as to be rotatable in the horizontal direction, and the revolving arm and the movable formwork are moved together so as to be able to cope with a change in the route shape of the tunnel. Further, the present invention relates to a tunnel lining device including a retractable swing arm that moves in the circumferential direction on the inner peripheral surface of a tunnel, and a movable formwork that is swingably connected to the tip of the arm. A pedestal is provided at the tip of the revolving arm, and a plurality of pressing means capable of pressing the movable formwork toward the lining concrete space are arranged around the pedestal, and the movable formwork is provided between the pedestal and the movable formwork. Arrangement of a substrate that swingably supports the form, a plurality of support rods projecting from the plate, and slidably supporting the pedestal on the rods, the posture of the movable form that operates in a complicated manner It is characterized by allowing it and firmly supporting it. The present invention relates to a tunnel lining device including an expandable and retractable swivel arm that moves in a circumferential direction on an inner peripheral surface of a tunnel, and a movable formwork that is swingably connected to a tip end portion of the arm, A pedestal for supporting the movable mold is rotatably provided at the tip of the swivel arm, and a frame phase rotation motor capable of driving the gantry is provided at the tip of the swivel arm to move the movable mold to, for example, 180
It is characterized in that it can be rotated and the frame can be turned upside down to allow lining with movable form on both side walls of the tunnel. Moreover, the present invention is a tunnel lining device that has a movable mold that can move along the inner surface of a tunnel, and a belt is rotatably provided at the tip of the mold. Cross-sectional shape of the tunnel by arranging a roller for movement inward and outward, and arranging the roller so as to be engageable with the inner surface of the inner circumference of the belt, and adjusting the belt length and tension on the circumference side in contact with the lining concrete. It is characterized by preventing the occurrence of cracks and irregularities in the lining concrete due to the wrinkles of the belt and the excess and deficiency of the tension by making it possible to obtain high-quality lining concrete. Further, the present invention provides a movable formwork, which is movable along the inner surface of the tunnel, with a nozzle capable of spraying concrete toward the lining concrete space, and the nozzle is orthogonal to the moving direction of the movable formwork. In a tunnel lining device that is capable of reciprocating in a direction, a guide shaft is provided on a movable mold frame so that it can be rotated forward and backward, a nozzle holder is movably mounted along the shaft, and when the holder moves at a predetermined position. The feature is that the nozzle holder can be moved back and forth so that this kind of mechanism can be downsized and the nozzle can reciprocate smoothly and quickly. The present invention relates to a tunnel lining apparatus having a movable formwork that is movable along the inner surface of the tunnel, in which a pair of turning levers are rotatably provided inward and outward at the end of the movable formwork. A set plate having a through hole is arranged between the levers, a joint which can be connected to the concrete supply pipe is provided facing the through hole, a slide plate is movably provided on the set plate, and the slide plate is inserted into the slide plate. The feature is that the injection hole that can open and close the hole is formed to enable the concrete to be poured at the top end of the movable formwork, and the smooth lining concrete can be formed. The present invention relates to a tunnel lining apparatus having a movable formwork that is movable along the inner surface of the tunnel, in which a pair of turning levers are rotatably provided inward and outward at the end of the movable formwork. A set plate is arranged between the levers to block the lining concrete space at the lower end of the tunnel side wall so that concrete can be poured into the space and leakage can be prevented. . Further, according to the present invention, dissimilar set plates are arranged at both ends of the movable mold,
The feature is that concrete can be poured at the top and the bottom of the side wall of the tunnel.

[0007]

According to the first aspect of the present invention, an elevating device capable of vertically moving the swivel arm is provided at one end of the main body, and expansion and contraction displacement of the swivel arm can be reduced by the amount of the displacement of the device, so that the arm can be made compact. Also, by adjusting the expansion and contraction displacement of the lifting device and the swing arm, it is possible to accommodate the lining of large and small tunnels. Also, by connecting the movable formwork to the tip of the swivel arm so that it can swing in two mutually orthogonal plane directions, the flexibility of the posture of the movable formwork can be widened, and the ability to follow changes in the shape of the tunnel inner wall can be increased. Is improved. In the second aspect of the invention, the main body is provided with the outriggers and the side jacks so that the vertical position of the main body can be adjusted and the main body can be firmly held in the tunnel, so that the stability of movement of the movable formwork is improved. In the third invention, the lifting device is provided so as to be rotatable in the horizontal direction,
By rotating the movable arm and the revolving arm integrated with the device, the posture of the mold can be adjusted according to the sectional shape of the tunnel, and vertical contact between the mold and the inner wall of the tunnel is possible. . In the fourth aspect, the plurality of pressing means and the plurality of support rods allow the posture of the movable formwork that operates in a complicated manner, and firmly support it. In the fifth invention, the movable mold can be reversed by the mold phase rotation motor, and the lining with the movable mold on both side walls of the tunnel can be performed only by the operation. The adjusting roller is arranged so that it can be engaged with the inner surface of the inner circling portion of the belt, and the belt length and tension on the circling side that comes into contact with the lining concrete are adjusted to accommodate changes in the sectional shape of the tunnel.
Prevents cracking and unevenness of lining concrete due to belt wrinkles and excess or deficiency of tension, and forms good lining concrete. In the seventh invention, a guide shaft is provided on the movable mold frame so as to be able to rotate forward and backward, a nozzle holder is movably mounted along the shaft, and the nozzle holder can be moved back when the holder moves to a predetermined position. The size of this kind of mechanism is reduced, and the nozzle is smoothly and quickly reciprocated. According to an eighth aspect of the present invention, a slide having a set plate provided at an end of a movable formwork, a joint capable of connecting a through hole and a concrete supply pipe, and a set plate having an injection hole for opening and closing the through hole. The plate is movably provided to enable the concrete to be cast at the top end of the movable formwork to form a smooth lining concrete. In the ninth aspect, a set plate is provided at the end of the movable formwork to close the lining concrete space at the lower end of the tunnel side wall, enable the concrete to be poured into the space, and prevent the leak. In the tenth invention, dissimilar set plates are arranged at both ends of the movable formwork, and concrete can be poured at the top end and the lower end of the tunnel side wall.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. In FIG. 1 to FIG. 16, reference numeral 1 denotes a lining device carried into a tunnel 2, which comprises a main body 3, a vertical turning mechanism 4 and a movable die. And a frame 5. Of these, the main body 3 includes crawlers 6 and 6 capable of traveling on a road surface, and a pair of left and right outriggers 7 and 8 and side jacks 9 and 10 at front and rear ends thereof.
And are arranged.

A pair of left and right ultrasonic sensors (not shown) are arranged at the front and rear ends of the main body 3, and ultrasonic waves are radiated laterally from these sensors to the yaw angle of the main body 3 and the main body 3. The left and right positions can be detected. Further, an inclinometer (not shown) is installed at a predetermined position of the main body 3 so that the rolling angle and the pitching angle of the main body 3 can be measured, and those signals can be input to the controller 11 installed on the main body 3. ing. In the figure, 12 is a hydraulic unit including an oil tank provided at the rear end of the main body 3.

A ring-shaped mount 13 is provided at the front end of the main body 3, a turntable 14 is supported rotatably in the horizontal direction inside the mount 13, and a swivel cylinder 15 is mounted near the mount 13. The tip of the piston rod 16 is connected to the peripheral surface of the turntable 14, and the rotation angle of the turntable 14 can be adjusted through expansion and contraction displacement of the rod 16.

An elevating cylinder 17 is installed upward on the turntable 14 as an elevating device, and a substantially gate-shaped movable frame 19 is fixed to the upper end of a piston rod 18 thereof. An ultrasonic sensor (not shown) that detects the height of the main body 3 is installed at the upper end of the movable frame 19, and the ultrasonic wave is emitted upward from the sensor so that the signal can be input to the controller 11.

A support arm 20 is provided at a middle and high position of the movable frame 19.
A ring-shaped inner race 21 is provided at the tip of the arm 20, and a ring gear 22 is rotatably mounted on the outer peripheral surface of the race 21. A swing motor 23 is installed on the side of the support arm 20 via a motor bracket (not shown), and a drive gear 24 fixed to the output shaft of the swing motor 23 meshes with the ring gear 22.

A disc plate 25 is fixed to the outer end surface of the ring gear 22, and a connecting arm 26 is attached to the plate 25.
Is fixed to one end, and the other end is fixed to a base arm 28 which is a base end portion of the revolving arm 27. The swivel arm 27 includes a rectangular tubular base arm 28 that can be fitted to each other.
The intermediate arm 29 and the head arm 30 are connected to each other so that they can expand and contract, and the base of the arm expanding and contracting cylinder 31 is fixed inside the base arm 28.

The tip end of the piston rod 32 of the arm extending / contracting cylinder 31 is screwed into a locking piece 33, and the piece 33 is formed in a substantially inverted T shape, and the engaging step portions 33 are provided on both sides thereof.
a and 33a. A pair of connecting pieces 34, 34 are arranged on both sides of the locking piece 33, and the upper portion of the locking piece 33 is connected with a pin 35. The connecting pieces 34, 34 are formed in a substantially inverted U shape, and a concave portion 36 that can be engaged with the engaging step portion 33a is formed inside thereof, and leg pieces on both sides thereof are bolted to the end plate 37.

A ring-shaped inner race 38 is fixed to the end plate 37, and a ring gear 39 is rotatably attached to the outer end surface of the race 38, so that a pedestal 40 to which the gear 39 is fixed can move. End plate 37
A mold phase rotation motor 41 capable of rotating the movable mold 5 on the horizontal plane by 180 ° is provided at the end of the drive gear 42, and a drive gear 42 fixed to the output shaft thereof meshes with the ring gear 39. In the figure, reference numeral 43 denotes a position sensor arranged in the revolving arm 27, which makes it possible to detect the displacement of the piston rod 32.

The pedestal 40 is formed in the shape of a hollow drum, and the peripheral edge of its base is fixed to a pedestal plate 44, and a box-shaped support frame 45 is attached to the plate 44. Substrates 46 are arranged in proximity to the base plate 44,
A pair of rods 47 are provided on the plate 46 so as to project therefrom.
The pedestal 40 is slidably supported on the.

A spherical shaft 48 is projectingly provided at the center of the base plate 46, and the shaft 48 is supported by a spherical journal 50 provided at the center of the lower surface of the mold base 49 so as to be swingable horizontally and vertically. Pressing cylinders 51, which are pressing means, are vertically fixed at the outer positions of the four corners of the frame 45, and the tips of the piston rods 52 thereof are connected to the frame base 49. In the figure,
Reference numeral 53 denotes a stroke sensor arranged on the substrate 46, which detects a displacement of the piston rod 52, and detects this by the controller 11
It is possible to input to.

A pair of brackets 54, 55 are provided on the lower surface of the mold base 49, and a roll driving motor 56 is provided on the lower surface of the mold base 49 near the bracket 54, and an output shaft of the motor 56 is provided. The drive sprocket 57 is fixed. On the bracket 54, intermediate sprockets 58 and 59 having different diameters are arranged coaxially, and a chain 114 is wound around the sprockets 57 and 58.

A driving roller 60 and a driven roller 61 having different diameters are rotatably supported on the side end of the form frame 49.
A sprocket 62 is coaxially arranged at one end of the roller 60, and a chain 63 is wound between the sprocket 62 and the sprocket 59.

A belt 64 is wound around the driving roller 60 and the driven roller 61, and a plurality of pitch rollers 65 are rotatably supported inside the belt 64. Pressing cylinders 66, 66 are provided upright at both ends of the pitch roller 65, and a roller shaft 68 of the roller 65 is rotatably supported at the tip of piston rods 67, 67.

Of these, the pitch roller 6 arranged in the center
Connecting plates 69, 69 are attached to both ends of the plate 5 so as to be vertically movable and non-rotatable.
The length adjusting roller 70 is rotatably supported, and the lower peripheral surface thereof is arranged to be engageable with the inner surface of the lower peripheral portion of the belt 64. In the figure, 71 is a form frame base 49 directly below the connecting plate 69.
The lower end of the connecting plate 69 can be received by the notch formed in the above.

A belt 64 is provided on both sides of the adjusting roller 70.
A feed roller 72 and a tension roller 73, which are engageable with the outer surface of the lower circumferential portion, are provided.
Is arranged at a fixed position, and the tension roller 73 is attached to the tip of the damper arm 74. The damper arm 74 is urged so as to be able to swing upward about the damper shaft 75, and the tension roller 73 is always engaged with the outer surface of the lower circumferential portion of the belt 64.

Annular grooves 76 to 79 are formed on the peripheral surfaces of both ends of the driving roller 60 and the driven roller 61, and engaging ribs 80 and 81 projecting from the inner surface of the belt 64 are engaged with the grooves. It is designed to prevent the meandering and slipping of 64 and to stabilize the orbiting operation. The annular grooves 76 to 79 are also formed on the peripheral surfaces of both ends of the pitch roller 65 as shown in FIGS.

A nozzle moving motor 82 capable of rotating in the normal and reverse directions is provided at the end of the mold base 49 opposite to the motor 56, and a sprocket 83 is fixed to the output shaft thereof.
Further, a sprocket 84 is attached to a side end portion of the bracket 55.
Is rotatably mounted and these sprockets 83, 8
A chain 85 is wound between the four.

A screw shaft 86, which is a guide shaft, or a ball screw is rotatably supported between the brackets 54 and 55, and the sprocket 8 is attached to the axial end thereof.
4 is fixed, and a guide rod 87 is installed in parallel with the shaft 86. The base of a nozzle holder 88 is screwed onto the screw shaft 86, and the lower end of the holder 88 is slidably fitted to the guide rod 87.

A nozzle body 89 is attached to the tip of the nozzle holder 88 vertically and rotatably around an axis, and a concrete supply pipe 90 is detachably connected to the lower end of the body 89. The nozzle 9 is provided on the upper end of the nozzle body 89.
1 is connected obliquely upward, and its injection port is positioned directly above the end of the belt 64.

A pedestal 92 is installed directly below the nozzle holder 88, and a swinging motor 93 for swinging the nozzle is provided at one end of the pedestal 92, and a drive gear 94 is fixed to its output shaft. . The gear 94 meshes with a gear 95, which is fixed to the lower end of the nozzle body 89, and is rotated outward by a predetermined angle at both ends of the belt 64 in the width direction. And can be moved together.

A pair of left and right set cylinders 96, 97 are provided at both ends of the form frame base 49. Of these, the set cylinders 96 are operated when concrete is poured into the top end 2a of the tunnel 2 and set. The cylinder 97 is made operable when concrete is poured into the lower end of the side wall 2b of the tunnel 2, and these are installed back to back at the side ends of the formwork base 49 and at the tips of their piston rods (not shown). The turning levers 98 and 99 are rotatably connected.

The swiveling levers 98 and 99 are provided on the drive roller 60.
And the levers 98, 98 and 99, which are rotatably supported by pins 100 and 101 coaxial with the driven roller 61.
The set plates 102 and 103 are connected between 99.

Of these, the set plate 103 is composed of a flat plate body, and a tubular joint 104 capable of connecting the concrete supply pipe 90 is projectingly provided on the inner surface of the set plate 102, and a through hole 105 is formed on the outer surface thereof. As shown in FIG. 16, the slide plate 107 is slidably accommodated in the concave groove 106 in which the concave groove 106 is formed, and the injection hole 10 communicating with the through hole 105 is formed in the plate 107.
8 is formed, and the piston rod 110 of the opening / closing jack 109 is connected to one end of the plate 107.

In addition, in the figure, 111 is a valve unit arranged at the side end of the frame base 49, 112 is a lining concrete space, both sides of which are support frames (not shown) and adjacent linings after solidification. It is divided by the concrete end face. 113
Is a void formed between the lining concretes facing the top end 2a, and 2c is an invert.

When the lining concrete 112 is formed on the inner surface of the tunnel 2 using the thus constructed tunnel lining device, the lining device 1 is carried into the tunnel 2 and moved to a predetermined position. When stationary, the outriggers 8 are extended, and the main body 3 is jacked up so that the turning center of the turning arm 27, that is, the center of rotation of the ring gear 22 is located substantially at the center of the tunnel cross section, and the side jack 10 is extended. Then, attach the tip to the side wall 2 of the tunnel 2.
It is pressed against b and the posture of the main body 3 is maintained.

At that time, detection signals from an ultrasonic sensor installed in a proper position of the main body 3 and an inclinometer (not shown) are input to the controller 11 every moment, and the position of the main body 3 is calculated by these input signals. And this calculation result,
The set position information of the main body 3 stored in advance in the controller 11 is compared, and a control signal containing the deviation thereof is output to the outrigger 8 and the side jack 10 to adjust the expansion and contraction of the main body 3 to a predetermined value. Install in position and posture.

Next, stored in the controller 11 in advance,
For example, the controller 11 outputs a control signal to the elevating cylinder 17 and the telescopic cylinder 31 based on information such as the excavated cross-sectional shape of the tunnel 2, the finished dimension after lining, the lining concrete thickness, and the lining start position.

Of these, when a control signal is input to the elevating cylinder 17, the piston rod 18 extends, the movable frame 19 fixed to the upper end thereof rises, and a support arm protruding laterally of the frame 19 is provided. 20 and the connecting arm 26 move together, and the vertical swivel mechanism 4 and the movable form 5 provided at the tip of the swivel arm 27 rise together.

In this case, the extension displacement of the elevating cylinder 17 belongs to the provisional position setting when positioning the movable mold 5, and the telescopic cylinder 31 and the pressing cylinder 51, which will be described later, are set.
Is determined in cooperation with the displacement of the movable frame 1
It is detected by an ultrasonic sensor installed at the upper end of 9, and the controller 11 calculates it.

When a control signal is input to the telescopic cylinder 31, the piston rod 32 extends, the head arm 30 surrounding the rod 32 and the intermediate arm 29 extend, and the pedestal 40 fixed to the tip of the arm extends. Along with the movement, the movable form 5 installed on the stand 40 so as to be swingable moves integrally. Therefore, the movable mold 5 has the lifting cylinder 17
The extension radius of the telescopic cylinder 31 and the extension displacement are displaced, and the turning radius is provisionally set.

In this case, the extension displacement of the telescopic cylinder 31 sets the displacement of the revolving arm 27 and belongs to the reference setting of the revolving radius of the movable formwork 5, and the displacement is installed inside the revolving arm 27. It is detected by the position sensor 43, and the controller 11 calculates it.

As described above, according to the present invention, since the movable formwork 5 is displaced in the turning radius direction in advance by the lifting cylinder 17, the telescopic cylinder 31 or the turning arm 27 for setting the turning radius is reduced in size and weight. In addition to being able to plan, by making full use of these both cylinders 17 and 31, it is possible to respond to the lining of large and small tunnels 2.

On the other hand, when the lining portion is the curved portion or the bent portion of the tunnel 2, the controller 11 sends a control signal to the swivel cylinder 15 based on the radius of curvature of the curved portion and the bending angle of the bent portion to cause the piston to move. The rod 16 is expanded and contracted.
By doing so, the piston rod 16 expands and contracts in response to the signal, and the turntable 1 connected to the tip thereof is
4 is pushed and pulled in the axial direction of the piston rod 16,
Rotate left or right.

Therefore, the elevating cylinder 17 on the turntable 14 and the movable frame 19 move together, and the vertical turning mechanism 4 projecting to the side of the frame 19 and the movable form frame 5 at its tip end. As shown by the phantom line in FIG. 3, the movable formwork 5 is allowed to make a right angle contact with the inner surface of the curved portion or the bent portion by rotating integrally.

In this way, when the turning radius of the movable mold 5 is provisionally set, the turning motor 23 is driven to position the mold 5 at the lining start position. That is, when the turning motor 23 is driven, the drive gear 24 fixed to the output shaft thereof rotates, the ring gear 22 meshing with the gear 24 rotates, and the power thereof passes through the disc plate 25 and the connecting arm 26, and the base. It is transmitted to the arm 28.

Therefore, the base arm 28 rotates in synchronization with the ring gear 22, and the revolving arm 27 rotates.
The movable formwork 5 at its tip is positioned at the lining start position, that is, at the lower end of the side wall 2b of the tunnel 2 by turning around.

In this case, the movable formwork 5 is
As shown in FIG. 2, the nozzle 91 faces toward the turning direction shown by the arrow.
Are positioned so that Therefore,
When the nozzle 91 is located in the lower position, the mold phase rotation motor 41 is driven as described later to invert the posture in advance.

In this way, after moving the movable mold 5 to the lining start position, the four pressing cylinders 51 are extended all at once,
The movable formwork 5 is used as the lining concrete space 11 for the tunnel 2.
2 Position on the inner surface. That is, when the pressing cylinder 51 is operated and the piston rod 52 is extended, the mold base 49 connected to the tip of the piston cylinder 52 is pushed and moved, and this causes the substrate 46 to move.
It is positioned on the inner surface of the space 112 while maintaining parallel with. As a result, the turning radius of the movable form 5 is precisely and finally set.

In this case, since the movable formwork 5 is pivotally adjusted by the pivot cylinder 15 according to the curved portion or the bent portion of the tunnel 2 as described above, the tension direction or the circumferential direction of the belt 64 is covered. It makes a right angle contact with the inner surface of the work-concrete space 112, and promotes stable circumferential rotation of the belt 64 as described later.

After that, when the pitch cylinder 66 is extended and the piston rod (not shown) thereof is extended, the roller shaft 68 moves together with the piston rod, and the pitch roller 64 integral with the shaft 68 moves outward. The outer peripheral surface of the belt 64 moves, the outer peripheral surface of the belt 64 is engaged with the inner surface of the outer peripheral portion of the belt 64, and the belt 64 is urged outward, and the belt length of the outer peripheral portion is adjusted according to the sectional shape of the tunnel 2.

Further, before and after this, when one set cylinder 97, 97 is extended and the piston rod (not shown) thereof is extended, one end of the turning lever 99, 99 is pushed outward and the lever is pushed. 99, 99 is pin 101,
14, the set plate 103 is pushed counterclockwise in FIG. 14 and erected between them, and the set plate 103 is positioned on substantially the same height as the belt 64 as indicated by the phantom line in FIG. It is pressed against the invert part 2c like 2 and closes the lower end of the lining concrete space.

Under such circumstances, the nozzle body 89
The concrete supply pipe 90 is connected to the end portion of the roller, and the roll driving motor 56, the nozzle moving motor 82, and the nozzle swinging swinging motor 93 are driven to form lining concrete. In this case, the movable formwork 5 and the belt 64 are operated after the predetermined amount of concrete is poured into the lining concrete space 112.

Of these, when the nozzle moving motor 82 is driven, the sprocket 83 fixed to its output shaft rotates, the sprocket 84 rotates via the chain 85, and the screw shaft 86 integral with the sprocket 84 synchronizes. Rotate. Therefore, the nozzle holder 88
Moves along the screw shaft 86, and the nozzle body 89 mounted on the nozzle holder 88 and the nozzle 91 integrated with the body 89 move together, and move in the width direction of the belt 64.

Nozzle holder 88 is screw shaft 8
When it reaches the end of No. 6, this is detected by, for example, a limit switch, the nozzle moving motor 82 stops driving, and the holder 88 stops moving.

After that, when the motor 82 is reversely driven and the screw shaft 86 is reversely rotated, the nozzle holder 88 is
Moves in the opposite direction to the end of the shaft, the motor 82 stops driving, and the nozzle holder 8
8 stops moving. After that, the motor 82 periodically rotates forward and backward, and the nozzle holder 88 to the nozzle 91 reciprocate on the screw shaft 86.

After the movement of the nozzle 91 is started, the rapid-concrete concrete is pumped from the concrete pumping device (not shown), guided to the concrete supply pipe 90 and blown out from the nozzle 91, and the lining concrete space 112 Deposits on the bottom edge of. In this case, since the set plate 103 is already located at this portion and closes the lower end of the space 112, the lining concrete does not leak to the invert portion 2c.

On the other hand, the nozzle swing oscillation motor 93 is driven when the movement of the nozzle body 89 or the nozzle 91 is stopped, the drive gear 94 fixed to the output shaft thereof is rotated, and the gear 95 meshing with this is rotated. The nozzle body 89, which is integral with the gear 95, moves together, and the nozzle 91 rotates outward by a certain angle. For this reason, concrete is sprayed toward the support frame (not shown) that divides the width of the lining concrete space 112 and the adjacent lining concrete end surface after solidification, and between them and the movable formwork 5. Fill to prevent uneven driving of concrete.

When the nozzle 91 is rotated by a certain angle, this is detected by, for example, a limit switch, and the swinging motor 93 for swinging the nozzle is stopped to drive the nozzle 91.
Stops rotating. The motor 93 is thereafter driven in the reverse direction so that the nozzle 91 rotates in the direction opposite to the above direction and stops when the nozzle 91 returns to the original position.

In this way, the concrete filled in the lining concrete space 112 gently flows down by the action of gravity, and is closely coupled to the surrounding concrete, and is pressed outward by the biased belt 64, and the tunnel is tunneled. It is pressed against the inner surface of 2 and hardens rapidly during this.

Then, when the lining concrete space 112 adjacent to the movable formwork 5 is filled with approximately 80% of the concrete, in other words, when the concrete is hardened to maintain a constant shape, the roll is driven. The driving motor 56 and the turning motor 23 are driven.

Of these, when the roll drive motor 56 is driven, the drive sprocket 57 fixed to the output shaft thereof rotates, and the power thereof is transmitted to the sprocket 58 via the chain 59, and further from the coaxial sprocket 59 to the chain. It is transmitted to the sprocket 62 via 63, and the drive roller 60 coaxially rotates.

Therefore, the driven roller 61 rotates via the belt 64, and the belt 6 passes between the rollers 60 and 61.
4 rotates in the direction of the arrow in FIG. 14, that is, the outer peripheral portion rotates in the moving direction of the movable mold 5. The belt 64 has a plurality of pitch rollers 65 engaged with the inner surface of the outer peripheral portion of the belt 64, and the portion is urged outward.

When the turning motor 23 is driven, the drive gear 24 fixed to the output shaft of the motor 23 rotates,
The ring gear 22 meshing with the gear 24 rotates, and the power thereof is transmitted to the base arm 28 via the disc plate 25 and the connecting arm 26.

Therefore, the base arm 28 rotates in synchronization with the ring gear 22, and the revolving arm 27 rotates.
And the movable formwork 5 at the tip thereof moves upward along the lining concrete space 112.

The moving speed of the movable mold 5 is set to be substantially the same as the circulating speed of the belt 64, and the belt 64 moves in synchronization with the movable mold 5. Therefore, as compared with the case where there is a relative speed difference between the two, the frictional force between the belt 64 and the concrete is suppressed as much as possible, and the belt 64 moves smoothly and stably on the concrete.

At this time, the outer circumferential portion of the belt 64, which comes into contact with the lining concrete, includes the pressing cylinder 66 and the pitch roller 65, and the adjusting roller 70 and the tension arm 7.
The length and tension of the tunnel 2 are adjusted by 4, and the tunnel 2 is displaced in accordance with the sectional shape of the tunnel 2. That is, at the same time when the lining starts, the pressing cylinder 66 expands outward, and the pitch roller 66 moves along with it, so that the outer peripheral portion of the belt 64 that engages with the roller 65 is urged outward. Bend outward like an imaginary line.

In this case, the pressing cylinder 66 extends in accordance with the inner surface shape of the lining concrete, that is, the sectional shape of the tunnel 2 at that position. When the sectional shape of the tunnel 2 is a concave curved surface, it is arranged at the center. As the pressing cylinder 66 extends, the outer circumferential portion of the belt 64 is curvedly displaced outward, while in the case of a flat surface, each cylinder 66 similarly extends to form the outer circumferential portion on a flat surface.

At this time, the adjusting roller 70 moves in accordance with the displacement of the pitch roller 65, and when the roller 65 projects outward, the roller 65 also moves outward and reduces the pressing displacement of the belt 64 against the inner circumferential portion. Then, the belt length is extended by that amount to enable the curving displacement. On the other hand, the pitch roller 6
When 5 is maintained in the original position, the adjusting roller 70 is located at the innermost position, increasing the pressing displacement of the belt 64 against the inner circumference of the belt 64, and collecting the belt length by that amount to recover the flat surface shape. Allows for displacement.

Therefore, the outer circumference of the belt 64 is
Since the length is adjusted by the sectional shape of the tunnel 2,
It is possible to respond to the change in the cross-sectional shape. Further, since the tension roller 73 is pressed against the inner circumferential portion of the belt 64 to give uniform belt tension, even if the outer circumferential portion of the belt 64 is variously displaced as described above, the tension roller 73 is uniform. Tension is applied to prevent wrinkling of the part and displacement from the concrete surface. Therefore, the concrete surface is not peeled off by the belt 64, cracked or uneven, and a smooth and uniform lining concrete surface is formed.

In this way, the movable mold 5 divides the inner surface of the lining concrete space 112 sequentially while moving, and the nozzles 91 located above the divided space 112 are connected to the mold 5 by the mold 5.
Moving in a direction orthogonal to the moving direction and swinging outward at both ends of the space 112 to uniformly pour concrete into the space 112.

On such a movable form 5, the pressing force of the swivel arm 27 and the pressing cylinder 51, the reaction force and the vibration of the concrete act in the direction normal to the inner surface of the tunnel 2, and the swivel arm 5 also moves. An upward turning force by 27,
The frictional force due to the belt 64 acts in the tangential direction of the inner surface of the tunnel 2, and the bending moment resulting from these forces is
By acting on the swing arm 27 and the pressing cylinder 51, the movable formwork 5 is twisted, and pitching, rolling, and yawing are performed.

However, the movable mold 5 is divided into a mold base 49 and a gantry 40, which are swingably connected to the planes orthogonal to each other by the spherical shaft 48 and the spherical journal 50. Therefore, it is possible to respond to complicated movements and postures of the mold stand 49, allow them, and reduce stress generated in them. Moreover, since the frame base 49 is supported by the four pressing cylinders 51 arranged at the four corners of the rectangular plane and the pair of support rods 47 arranged adjacent to the cylinders 51, the frame base 49 is supported. Strength is strengthened, and the posture of the base 49 is stabilized.

When the tunnel 2 has an irregular elliptical cross section as shown in the drawing, the turning radius of the movable formwork 5 needs to be adjusted.
Section shape is stored in advance, and a predetermined turning radius is calculated on the condition that the position information of the movable mold 5 is input based on the stored information, and the result is used as a control signal for the telescopic cylinder 31 or the press cylinder. 51, for example, when the fluctuation amount of the turning radius is large, it is output to the telescopic cylinder 31, and when the fluctuation amount is small, it is output to the pressing cylinder 51, and the turning radius is adjusted by expanding and contracting them.

When the movable mold 5 moves upward,
The set cylinder 97 contracts, the turning lever 99 rotates downward, and the set plate 103 returns to the original position.

In this way, the movable formwork 5 moves upward,
When the lining concrete is gradually formed on one side of the lining concrete space 112 and the mold 5 reaches the top end 2a, the supply of the concrete is stopped, the formation of the lining concrete is stopped, and Motors 56, 82, 9
3 is stopped. In addition, each cylinder 17, 31,
51 is contracted, the movable mold 5 is lowered, and then the turning motor 23 is driven to position the mold 5 near the lining start position of the lower end of the other side wall 2b in the tunnel 2 and the mold phase is set. The rotation motor 41 is driven.

In this way, the drive gear 42 fixed to the output shaft of the motor 41 rotates, the ring gear 39 meshing with the gear 42 rotates, and the gantry 40 fixing the gear 39 and the pedestal 40 are fixed. The pressing cylinder 51 fixed to the integrated base plate 44 moves together, and the movable form frame 5 connected to the piston rod 52 of the cylinder 51 rotates synchronously.

Then, the motor 41 rotates 180 °, the movable form 5 moves together, and when the nozzle 91 is positioned higher, the driving of the motor 41 is stopped. After that, the cylinders 17, 31, 51 are extended, the movable mold 5 is accurately positioned at the lining start position, and the turning radius thereof is adjusted. Then, the set cylinder 97 is extended to set the plate. 103 is positioned at the lower end of the lining start position, and the lower end of the lining concrete space 112 is closed.

Under these circumstances, the motors 82 and 93 are driven to reciprocate the nozzle 91 as described above, and the nozzle 91 is swung to operate the lining concrete space 1
When concrete is driven into 12 and filled with a predetermined amount, the roll driving motor 56 and the turning motor 23 are driven to rotate the belt 64 in the same direction as described above,
The swivel arm 27 is swung upward to move the movable formwork 5 upward.

While the movable formwork 5 is moving, the inner surface of the lining concrete space 112 is sequentially partitioned, and the partitioned space 11
The nozzle 91 located above 2 is moved in the direction orthogonal to the moving direction of the mold 5, and the both ends of the space 112 are swung outward so that concrete is uniformly poured into the space 112.

In this way, the movable mold 5 moves upward,
When the lining concrete is gradually formed on one side of the lining concrete space 112 and the mold 5 reaches the top end 2a, the supply of the concrete is stopped and the formation of the lining concrete is stopped. Therefore, the upper end face of the lining concrete faces the top end 2a, and the void 11 is provided between them.
3 is formed.

After that, the driving of the motors 56, 82, 93 is stopped, the cylinders 17, 31, 51 are further contracted to lower the movable form 5 to an appropriate position, and then the nozzle 91 is removed. Further, the concrete supply pipe 90 is removed from the lower end of the nozzle body 89, and the pipe 90 is connected to the joint 104.

When the set cylinders 96, 96 are extended and their piston rods (not shown) are extended, one ends of the swiveling levers 98, 98 are pushed outward, and the levers 98, 98 are pushed by the pins 100, 98. 14 is pushed clockwise around 100, and the set plate 102 installed between them is positioned at the side end portion of the movable form frame 5 as indicated by the phantom line in the figure.

Under such circumstances, the turning motor 23 is appropriately driven to extend the cylinders 17, 31, 51 to raise the movable mold 5 toward the top end 2a, and the set plate is moved. 102 is pressed against the opening edge of the void 113 to close the void 113.

After that, the opening / closing jack 109 is operated, and the slide plate 1 connected to the piston rod 110 thereof.
07 is moved to bring the through hole 108 of the plate 107 into communication with the injection hole 105 of the set plate 102,
A concrete pumping device (not shown) is driven to pump concrete.

In this way, the concrete is guided to the concrete supply pipe 90 and blown out into the set plate 102 through the injection holes 105 to fill the gap 113. In this case, the lower surface of the filled concrete is regulated by the set plate 102 and is formed to be smooth on the same level as the inner surface of the adjacent lining concrete, so that the appearance after solidification is good and the conventional finishing work can be performed. I don't need it.

Then, after the void 113 is quantitatively filled with concrete, the driving of the concrete pumping device is stopped,
While stopping the concrete pumping, when the filled concrete has hardened to some extent, each cylinder 1
7, 31, 51 are contracted, and the movable form 5 is lowered.

In this way, after the lining concrete is formed on the top end portion 2a and both side wall portions 2b in the tunnel 2, the outriggers 7 and 8 and the side jacks 9 and 10 are contracted to uncover the lining device 1. After moving a predetermined distance in the work direction and positioning again, lining concrete is formed in the same manner as described above.

[0085]

As described above, in the tunnel lining device of the present invention, since the lifting device for vertically moving the turning arm is provided at one end of the main body, the expansion / contraction displacement of the turning arm is reduced by the amount of the displacement of the device. The size of the arm or the device of this kind can be reduced, and the expansion and contraction displacement of the lifting device and the swing arm can be adjusted, so that there is an effect that it is possible to cope with the lining of large and small tunnels. Also, since the movable formwork is connected to the tip of the revolving arm so as to be swingable in two plane directions orthogonal to each other,
Compared with the conventional movable form that can swing only in the direction orthogonal to the axial direction of the pivot, the degree of freedom of posture is expanded and the followability to the shape change of the inner wall of the tunnel can be improved. Further, according to the present invention, since the outrigger and the side jack are provided on the main body, the up and down position of the main body can be adjusted by the outrigger, and the side jack can firmly hold the main body, thereby stabilizing the movement of the movable formwork. . Further, according to the present invention, since the elevating device is provided so as to be rotatable in the horizontal direction, the swing arm and the movable formwork integrated with the device are moved together, and the posture of the formwork is changed according to the sectional shape of the tunnel. Can be adjusted. Therefore, the movable formwork vertically contacts the inner wall of the tunnel, promotes good movement of the inner form, and obtains a uniform lining concrete thickness parallel to the inner wall of the tunnel. Moreover, according to the present invention, since the movable formwork is supported by the plurality of pressing means and the plurality of support rods, the posture of the movable formwork that is complicatedly operated during the lining is allowed, and the movable formwork is firmly supported. Can be supported. According to the present invention, since the movable formwork can be reversed by the formwork phase rotation motor, there is no trouble of moving the main body one by one,
It is possible to easily perform lining with movable formwork on both side walls of the tunnel. Further, according to the present invention, since the adjusting roller is disposed so as to be engageable with the inner surface of the inner circumferential portion of the belt, and the length of the outer circumferential portion of the belt contacting the lining concrete surface can be adjusted, the cross section of the tunnel can be adjusted. It is possible to cope with a change in shape, prevent the belt from deviating from the concrete surface, prevent cracking or unevenness of the lining concrete, and form a good lining concrete. Further, according to the present invention, a movable mold is provided with a guide shaft capable of rotating in the forward and reverse directions,
A nozzle holder is movably mounted along the shaft,
Since the nozzle holder can be moved back when the holder moves to a predetermined position, this type of mechanism can be downsized as compared with a conventional structure that makes full use of a cylinder, and the nozzle can smoothly and quickly reciprocate. it can. The present invention provides a slide plate having a set plate provided at an end of a movable formwork, a joint capable of connecting a through hole and a concrete supply pipe, and a set plate having an injection hole for opening and closing the through hole. Since it is movably installed, it is possible to drive concrete at the top end with a movable formwork, and since it is possible to form lining concrete on the same surface as the adjacent lining concrete, the conventional part This has the effect of eliminating the need for finishing work. On the other hand, the present invention, by providing a set plate at the end of the movable formwork, it is possible to close the lining concrete space at the lower end of the tunnel side wall, so that it is possible to drive concrete into the space,
The leakage can be prevented. Further, according to the present invention, since dissimilar set plates are arranged at both ends of the movable formwork, it becomes possible to drive concrete at the top end and the lower end of the side wall of the tunnel, which improves convenience in use. There are various effects such as being possible.

[Brief description of drawings]

FIG. 1 is a front view showing an embodiment of the present invention.

FIG. 2 is a side view of FIG. 1, showing a situation during lining of the present invention.

FIG. 3 is a plan view of FIG.

FIG. 4 is an enlarged sectional view showing a main part of a vertical turning mechanism applied to the present invention.

FIG. 5 is a plan view of FIG.

FIG. 6 is a side view of the movable formwork applied to the present invention, showing a state in which the turning arm and the pressing cylinder are contracted.

FIG. 7 is a plan view of FIG.

FIG. 8 is a bottom view showing a mounting state of a gantry and a pressing cylinder applied to the present invention.

FIG. 9 is a front view showing a situation in which a belt applied to the movable mold of the present invention is wound around.

FIG. 10 is a schematic diagram of FIG. 9.

11 is a sectional view taken along the line AA of FIG.

12 is a cross-sectional view taken along the line BB of FIG.

13 is a cross-sectional view taken along the line CC of FIG.

FIG. 14 is a front view of a movable formwork applied to the present invention.

FIG. 15 is a side view showing a main part of a nozzle movement moving mechanism applied to the present invention.

FIG. 16 is a bottom view showing the main part of the opening / closing mechanism of the set plate applied to the present invention.

[Explanation of symbols]

 1 Lining device 2 Tunnel 3 Main body 5 Movable formwork 6 Traveling means 7,8 Outrigger 9,10 Side jack 17 Lifting device 27 Swivel arm 40 Frame 41 Formwork phase rotation motor 46 Board 47 Support rod 51 Pressing means 64 Belt 70 Adjustment Roller 86 Guide Shaft 88 Nozzle Holder 90 Concrete Supply Pipe 91 Nozzle 98,99 Pivoting Lever 102,103 Set Plate 104 Joint 105 Through Hole 107 Slide Plate 108 Injection Hole 112 Lining Concrete Space

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Yoshiharu Aoki Inventor Yoshiharu Aoki 2-5-3 Misaki-cho, Chiyoda-ku, Tokyo Inside Iron Construction Co., Ltd. (72) Osamu Takahashi 2 Misaki-cho, Chiyoda-ku, Tokyo Chome 5-3 Iron Construction Co., Ltd.

Claims (10)

[Claims] 1. A main body provided with a traveling means capable of moving on a road surface, an extendable and retractable arm for fixing a base portion to the main body to move an inner peripheral surface of a tunnel in a circumferential direction, and a tip end portion of the arm. A movable mold which is swingably connected to the mold, a belt which is rotatably provided at the tip of the mold and is movable along the inner surface of the lining concrete space, and the mold which is provided in the mold. In a tunnel lining device provided with a nozzle capable of spraying concrete toward a lining concrete space, a lifting device capable of vertically moving a turning arm is provided at one end of the main body, and a tip end of the turning arm is provided. A tunnel lining device comprising a movable formwork connected so as to be swingable in two plane directions orthogonal to each other. 2. The tunnel lining device according to claim 1, wherein the main body is provided with an outrigger and a side jack. 3. The tunnel lining device according to claim 1, wherein the elevating device is provided so as to be horizontally rotatable. 4. A tunnel lining device comprising an expandable and retractable swivel arm that moves in the circumferential direction on the inner peripheral surface of the tunnel, and a movable formwork that is swingably connected to the tip of the arm. A pedestal is provided at the tip of the revolving arm, and a plurality of pressing means capable of pressing the movable formwork toward the lining concrete space are arranged around the pedestal, and the movable formwork is provided between the pedestal and the movable formwork. A tunnel lining device comprising: a substrate for swingably supporting a mold, a plurality of support rods projecting from the plate, and the rods slidably supporting the mounts. 5. A tunnel lining apparatus comprising: an extendable and retractable revolving arm that moves in a circumferential direction on an inner peripheral surface of a tunnel; and a movable formwork that is swingably connected to a tip portion of the arm. A tunnel cover characterized in that a gantry supporting a movable formwork is rotatably provided at the tip of the turning arm, and a formwork phase rotation motor capable of driving the gantry is provided at the tip of the turning arm. Engineering equipment. 6. A tunnel lining device having a movable mold which is movable along the inner surface of the tunnel, and a belt provided at the front end of the mold so as to be rotatable around the tunnel. A lining device for a tunnel, wherein a roller for use is provided so as to be movable inward and outward, and the roller is arranged so as to be engageable with an inner surface of an inner circumferential portion of a belt. 7. A movable formwork movable along the inner surface of the tunnel is provided with a nozzle capable of spraying concrete toward the lining concrete space, and the nozzle is in a direction orthogonal to the moving direction of the movable formwork. In a tunnel lining device that can be reciprocally moved to and from, a guide shaft is provided on a movable mold form so as to be able to rotate forward and backward, a nozzle holder is movably mounted along the shaft, and a nozzle is moved when the holder moves to a predetermined position. A tunnel lining device characterized by allowing the holder to move back. 8. A tunnel lining device having a movable formwork movable along an inner surface of the tunnel, wherein a pair of turning levers are provided at an end of the movable formwork so as to be rotatable inward and outward. A set plate having a through hole is arranged between the swiveling levers, a joint capable of connecting the concrete supply pipe is provided facing the through hole, and a slide plate is movably provided on the set plate. A tunnel lining device characterized by forming an injection hole capable of opening and closing a through hole. 9. A tunnel lining apparatus having a movable formwork capable of moving along the inner surface of the tunnel, wherein a pair of turning levers are provided at the ends of the movable formwork so as to be rotatable inward and outward. A tunnel lining device characterized in that a set plate is arranged between the turning levers. 10. The tunnel lining device according to claim 8, wherein different types of set plates are arranged at both ends of the movable formwork.