JP2607342B2 - Automatic setting method of centre and automatic setting device of centr used for it - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic centrifuge for automatically setting a centur attached to a portal structure to an inner wall of a tunnel when placing concrete on the inner wall of an excavated tunnel. The present invention relates to a setting method and an automatic setting device of a sentence used therein.

[0002]

2. Description of the Related Art Conventionally, when lining concrete is cast on the inner wall surface of an excavated tunnel, as shown in FIG.
2m) is used. The portal structure A can be moved on a rail C previously laid in the tunnel, and the center B can be moved together with the portal structure A. An electric jack F, a lateral feeding device H, and a turnback I provided between the structure A and the center A can vertically move the sentry B up and down and slide it laterally. The sentence B is divided into an upper sentence, a side wall sentry, and the like, and each sentence can be rotated by a hinge (not shown).

[0003] The center B is the inner wall D of the tunnel.
The concrete is poured into the space E between the inner wall D and the centre B, and when the concrete has solidified, the electric jack F, the traversing device H and the turnback I are operated to operate the centrifuge. B is contracted inward to separate from the poured concrete, and in that state, the portal structure A is moved in the direction of excavation of the tunnel as shown in FIG. 11 and the centre B is also moved in the same direction. Is moved so that the portion P (overlap flange attached so as to protrude to the rear of the center B) on the rear side in the traveling direction of P overlaps with the tip of the poured concrete Q by about 10 cm.

[0004] In this state, the electric jack F, the traversing device H and the turnback I are operated to spread the centrule B outward, and an appropriate gap E is provided in the inner wall D of the tunnel so as to be set to face each other. Concrete is poured into the gap E, and thereafter, concrete hardening, contraction of the center B, and movement of the portal structure A and the center B are repeated, and concrete is sequentially placed in the tunnel excavation direction.

[0005] By the way, detached from the poured concrete,
Spread the moved centure B outward and expand the inner wall D of the tunnel.
In the related art, the setting operation of providing the appropriate gap E and setting them so as to face each other has conventionally been performed manually by an operator. The operation procedure will be described below.

[0006] Worker is Centr (upper centr) B
And the inclination in the front-rear direction and the left-right direction are finely measured. . Based on the data obtained by the measurement, the worker operates the electric jack F and the traversing device H on the portal structure A, and tunnels the front-rear direction and the front-rear left-right inclination of the center (upper center) B. Adjust to . The worker raises the electric jack F to raise the centr (upper centr) B in parallel, and stops when the overlap flange P at the rear end of the centr B comes into close contact with the tip R of the concrete Q in place. Let it. .
The operator operates the turnbuckle I to open the side wall center.

[0007]

However, the above-mentioned method of setting a centre has the following problems. . Usually, at least four electric jacks F are attached to the front and back and left and right of the centre B. By operating these electric jacks F, the inclination of the front and rear and left and right directions of the centre B can be adjusted, and In order to raise the center B, several workers are required.

[0008] Even though there are a plurality of electric jacks F, since each electric jack F is not linked, the center B is adjusted after adjusting the inclination of the center B in the front-rear and left-right directions.
When the operators operating the electric jacks F are not aligned with each other, the centrifuge B whose inclination has been previously adjusted may be inclined during the ascent.

[0009] If the worker mistakes the timing of stopping the electric jack F, not only does the outer periphery of the overlap flange P of the centre B not tightly adhere to the inner periphery of the tip R of the poured concrete Q, but also in some cases, the overlap flange There is a case where the concrete Q is cracked due to the collision between the P and the cast concrete Q. Such a situation may lead to a serious construction error and must be eliminated.

The present invention provides a method for automatically setting the centre, which makes it possible to reduce the time required for adjusting the position of the centre when the concrete is poured, thereby minimizing the time required for the adjustment, and also enables the position adjustment to be automated. It is an object of the present invention to provide an automatic setting device of a center.

[0011]

According to a first aspect of the present invention, there is provided a method for automatically setting a sentence, as shown in FIG. 1 and FIGS. The centrifuge 3 set on the mold structure 2 is horizontally slid in the width direction of the centre 3 with the electric jack 4 for lifting and lowering and the electric jack 4 for raising and lowering attached between the same and the portal structure 2. In the method of setting a centre, which is moved in a desired direction by an electric traversing device 5 so as to provide a gap 6 for placing concrete between the inner wall of the tunnel 1 and the center 3, the following operations 1 to 3 are performed. It is characterized by performing a process.

[0012] A step of shrinking the side portion of the centur 3 inward each time the concrete placement into the gap 6 is completed, and lowering the top end to separate from the concrete on which the sentre 3 is placed.

[0013] In this state, the center 3 is advanced in the tunnel 1 by the portal structure 2 and stopped at a position where the peripheral edge 7 on the rear side in the direction of travel of the center 3 vertically overlaps the tip 9 of the poured concrete 8. Process.

[0014] A step of matching the front-rear direction of the center 3 with the direction of the tunnel 1;

[0015] Based on the detection data of the lateral inclinometer 10 provided on the centru 3, the electric jack 4 for raising and lowering moves the centru 3 so that its inclination in the width direction becomes a predetermined angle, and changes the inclination of the centru 3 in the width direction. The process of adjusting automatically.

[0016] The lifting / lowering electric jack 4 moves the centr 3 based on the detection data of the front / rear inclinometer 11 provided on the center 3 so that the front / back inclination thereof becomes a predetermined angle, and determines the front / back inclination of the center 3. The process of adjusting automatically.

[0017] The lifting electric jack 4 raises the sentry 3 in parallel, and when the contact sensor 12 provided on the peripheral edge 7 of the sentry 3 detects the contact with the tip 9 of the poured concrete 8, the sentry 3 is raised. The step of stopping.

According to the method for automatically setting a sentry of the present invention, a sentry 3 set on a portal 2 moving in a tunnel 1 is moved between the sentry 3 and the portal 2. The electric jack 4 for lifting and lowering and the electric jack 4 for lifting and lowering the electric jack are moved in a desired direction by an electric traversing device 5 which slides laterally in the width direction of the center 3, and the center 3 is moved between the center 1 and the inner wall surface of the tunnel 1. In the method of setting a sentence for setting a gap 6 for placing concrete in the center, the following steps (1) to (3) are performed.

[0019] A step of shrinking the side portion of the centur 3 inward each time the concrete placement into the gap 6 is completed, and lowering the top end to separate from the concrete on which the sentre 3 is placed.

[0020] In this state, the center 3 is advanced to the back of the tunnel 1 by the portal structure 2 and stopped at a position where the peripheral edge 7 on the rear side in the advancing direction of the center 3 vertically overlaps the tip 9 of the poured concrete 8. Process to make it.

[0021] A step of matching the front-rear direction of the center 3 with the direction of the tunnel 1;

[0022] Based on the detection data of the lateral inclinometer 10 provided on the centru 3, the electric jack 4 for raising and lowering moves the centru 3 so that its inclination in the width direction becomes a predetermined angle, and changes the inclination of the centru 3 in the width direction. The process of adjusting automatically.

[0023] The lifting / lowering electric jack 4 moves the centr 3 based on the detection data of the front / rear inclinometer 11 provided on the center 3 so that the front / back inclination thereof becomes a predetermined angle, and determines the front / back inclination of the center 3. The process of adjusting automatically.

[0024] The lifting electric jack 4 raises the sentry 3 in parallel, and when the contact sensor 12 provided on the peripheral edge 7 of the sentry 3 detects the contact with the tip 9 of the poured concrete 8, the sentry 3 is raised. The step of stopping.

[0025] In this state, when it is determined by the contact sensor 12 that the concrete contact position of the peripheral edge 7 is deviated to one side in the width direction of the centre 3, the electric traverse device 5 laterally moves the centre 3 to the side opposite to the deviation direction. The contact sensor 12 is brought into contact with the placed concrete 8 and then the centrifuge 3 is laterally moved in the reverse direction by half of the lateral movement distance to stop the centrifuge. And the step of stopping the center 3 when the contact sensor 12 on the periphery 7 of the center 3 detects contact with the poured concrete 8 at least once.

According to a third aspect of the present invention, there is provided an automatic centre setting device, wherein a centrifuge 3 set on a portal structure 2 moving in a tunnel 1 is provided between the central 3 and the portal structure 2. The electric jack 4 for lifting and lowering and the electric jack 4 for lifting and lowering the electric jack are moved in a desired direction by an electric traversing device 5 which slides laterally in the width direction of the center 3, and the center 3 is moved between the center 1 and the inner wall surface of the tunnel 1. In the centrifugal setting device for setting and setting a gap 6 for placing concrete in the centrifuge, a lateral inclinometer 10 for detecting the inclination in the width direction and a front and rear inclinometer 11 for detecting the inclination in the front and rear direction are provided on the centre 3. A contact sensor 12 that senses when an object hits the peripheral edge 7 on the near side in the moving direction of the sentence 3 and determines which side in the width direction of the sentence 3 is applied; Sending a command to set the start, transverse inclinometer 10, longitudinal inclination meter 11, the detected data electric transverse feeder and lift the electric jack 4 based on the contact sensor 12 5
And a control device 13 for moving the lifting electric jack 4 and the electric traversing device 5.

As shown in FIG. 2, in the automatic centrifugal setting device according to the fourth aspect of the present invention, the lateral inclinometer 10 is provided with a liquid containing liquid 2 which is arranged at a distance from the center 3 in the width direction.
Two horizontal tilt measuring cylinders 14, a horizontal connecting pipe 15 connecting the two cylinders 14 so that the liquid therein can flow between the two horizontal tilt measuring cylinders 14, and a liquid in each of the horizontal tilt measuring cylinders 14. 16 for detecting the height of the
The front-rear inclinometer 11 is composed of two front-rear inclination measuring cylinders 17 each containing a liquid, which are disposed apart from each other in the front-rear direction of the center 3, and a liquid contained in the two front-rear inclination measuring cylinders 17 therebetween. Cylinders 17 so that
And a sensor 19 for detecting the height of the liquid in each of the front-back tilt measurement cylinders 17.

[0028]

According to the method for automatically setting a centre of the present invention, the inclination of the movable centre 3 in the width direction and the inclination in the front-back direction are measured by the lateral inclinometer 10 and the front-back inclinometer 11. The center 3 is separated from the concrete 8 already placed and moved to move the center 3
When the direction of the front and rear directions of the tunnel 1 and the direction of the tunnel 1 match, the electric jack 4 for raising and lowering automatically adjusts the inclination of the front and rear directions of the center 3 based on the detection data of the lateral inclinometer 10 and the front and rear inclinometer 11. , And in this state, the sentry 3 is raised in parallel. When the contact sensor 12 detects contact with the poured concrete 8, the ascent and descent of the sentry 3 are automatically stopped, and the sentry 3 is automatically set.

In the method for automatically setting a sentry according to the second aspect of the present invention, the sentry 3 is detached from the concrete 8 on which it has been cast, and is moved so that the front-back direction of the sentry 3 matches the direction of the tunnel 1. At this time, even if the axis of the centru 3 is displaced laterally from the central axis of the tunnel, if the centru 3 rises and comes into contact with the poured concrete 8 in a one-sided state, it is detected by the contact sensor 12. Is detected. In addition, when the shift of the sentre 3 is detected, the electric traversing device 5 moves the sentre 3 laterally in the direction opposite to the shift direction, and further causes the contact sensor 12 to come into contact with the poured concrete 8. The center 3 is moved laterally in the reverse direction by half of the lateral movement distance and stopped, and the center 3 is moved to the center of the tunnel 1. In this state, the lifting electric jack 4 raises the sentry 3, so that the sentry 3 is automatically set to the center of the tunnel 1.

In the automatic centrifugal setting device according to the third aspect of the present invention, the lateral inclinometer 10 for detecting the inclination in the width direction of the centre 3 movable by the electric jack 4 for lifting and lowering and the electric horizontal traversing device 5 is provided. And a front and rear inclinometer 11 for detecting the inclination in the front-rear direction, and detecting when an object hits the peripheral edge 7 on the front side in the moving direction of the sentre 3 and determining which side in the width direction of the sentre 3 is applied. Contact sensor 12 is mounted, and the lateral inclinometer 10
When the detection data detected by the front and rear inclinometer 11 and the contact sensor 12 are sent to the control device 15, the control device 15
Sends a command to the lifting electric jack 4 and the electric traversing device 5 based on the detection data to move the center 3 and automatically set it in the tunnel 1.

In the automatic centrifugal setting device according to a fourth aspect of the present invention, the lateral inclinometer 10 includes two lateral inclination measuring cylinders 14 each containing a liquid, which are disposed apart from each other in the width direction of the centrifuge 3. A horizontal connecting pipe 15 that connects the two cylinders 14 so that the liquid inside the cylinders 14 can move between the horizontal tilt measuring cylinders 14 and a sensor 16 that detects the height of the liquid in each of the horizontal tilt measuring cylinders 14. When the center 3 is tilted in the width direction, the water level of the side tilt measuring cylinder 14 that is tilted and lifted is lowered,
In addition, the water level of the side tilt measuring cylinder 14 that is tilted down is raised. Since the change in the water level is detected by the sensor 15, the inclination of the center 3 in the width direction can be determined by the sensor 15.

The front and rear inclinometer 11 is provided between two front and rear oblique measurement cylinders 17 each containing a liquid, which is arranged in the front and rear direction of the center 3, and a liquid inside the two front and rear oblique measurement cylinders 17. Is constituted by a horizontal connecting pipe 18 that connects the two cylinders 17 so that the cylinders 17 can move back and forth, and a sensor 19 that detects the height of the liquid in each of the cylinders 17 for measuring the forward and backward inclination. When tilted,
The water level of the front-rear inclination measuring cylinder 17 that is tilted and raised is lowered, and the water level of the front-rear inclined measurement cylinder 17 that is tilted and lowered is raised. Since the change in the water level is detected by the sensor 19, the inclination of the center 3 in the front-rear direction can be determined by the sensor 19.

[0033]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the automatic centre setting method of the present invention and an automatic centre setting device used therein are shown in FIGS.
9 will be described.

In FIG. 1, 1 is a tunnel that has just been excavated, 2 is a portal structure that moves in the tunnel 1 on rails 20 laid in the tunnel 1, 3 is set on the portal structure 2, It is an arch-shaped centre that moves inside the tunnel 1 together with the gate-type structure 2 and places concrete 8 in the gap 6 formed between the tunnel 1 and the inner wall surface 21 of the tunnel 1.
Incidentally, the center 3 is divided into an upper center 25 and a side wall center 26, and the respective centers 25 and 26 are connected by a hinge (not shown) so as to be rotatable.

The center 3 is attached to the lower portions of four electric jacks 4 for lifting and lowering at the front, rear, left and right corners, a front electric jack 4 for lifting and lower, and a rear electric jack 4 for lifting and lowering the front. The electric jack 4 and the lifting electric jack 4 at the rear are individually mounted on the portal type structure 2 by an electric traversing device 5 which slides laterally in the width direction of the center 3. Incidentally, the lift electric jack 4 jack motor drive that is conventionally used, the electric traversing device 5 electric transverse feeder Sentoru the present applicant has previously developed application (Jitsugantaira No. 4-66827: Heikai 6
-24098) .

A first lateral inclinometer 10 for measuring a widthwise inclination at a front portion of the ceiling of the center 3 is provided above the ceiling.
And a second lateral inclinometer 10 for measuring the inclination in the width direction at the rear portion thereof, and a front and rear inclinometer 11 for measuring the inclination of the center 3 in the front and rear direction.

As shown in FIG. 2, the two inclinometers 10 are liquid (water) arranged in the width direction of the center 3.
A horizontal connecting pipe 15 that connects the two cylinders 14 so that the liquid inside them can flow back and forth between the two horizontal tilt measuring cylinders 14,
A sensor 16 for detecting the height of the liquid in each lateral inclination measuring cylinder 14. As shown in FIG. 2, the lateral inclinometer 10 is a beam (H) extending in the width direction of the center 3.
(The steel plate) with an attachment jig 28 so as to be firmly parallel to the center 3.

The sensor (capacitance type proximity switch) 1
As shown in FIG. 2B, 6 is fixed with a mounting jig 29 so as to face each cylinder 14 at a slight distance from the outer peripheral side of each lateral inclination measuring cylinder 14. Then, the capacitance type proximity switch 16 of each cylinder 14 for measuring the lateral inclination
However, the position is adjusted so that the water level in each of the lateral inclination measuring cylinders 14 is equal to the water level in a state where the centre 3 is horizontal.

When the center 3 tilts in the lateral width direction, the water level in the horizontal tilt measuring cylinders 14 at both ends thereof changes, and the water level in the horizontal tilt measuring cylinder 14 that is tilted upward is changed. The water level rises in the cylinder 14 for measuring the lateral inclination, which is tilted and lowered, and the water is no longer detected in the capacitance-type proximity switch 16 that has been raised, and the capacitance-type switch whose capacitance is lowered in one of them is used. Proximity switch 16 subsequently detects water. With this, it is possible to detect which side in the lateral width direction the sentry 3 is inclined from the detection signals of the ultrasonic sensors 16 at both ends.

The front and rear inclinometer 11 has the same configuration as the lateral inclinometer 10 shown in FIG. 2, and has two front and rear inclination measuring cylinders 17 containing a liquid (water) which are arranged in the front and rear direction of the center 3. A horizontal connecting pipe 18 connecting the two cylinders 17 so that the liquid inside the cylinders 17 can flow back and forth between the two cylinders 17;
And a sensor (capacitance-type proximity switch) 19 for detecting the height of the liquid in 7. This front and rear inclinometer 11
However, the inclination of the center 3 in the front-rear direction can be detected by the same operation as that of the lateral inclinometer 10.

However, the front and rear inclinometer 11 is not completely fixed to the beam of the centru 3 as in the horizontal inclinometer 10, and the front and rear inclinometer 11 is moved with respect to the longitudinal axis of the centre 3 as necessary. It is attached to the beam of the center 3 so that it can be tilted up and down little by little. This is because when the tunnel 1 is inclined upward or downward along the traveling direction, the center 3 is also inclined and concrete is poured in the same manner as the tunnel 1,
At this time, the front and rear inclinometer 11 of the center 3 was previously set in the tunnel 1
The inclination of the front and rear inclinometer 11 becomes horizontal when the center 3 coincides with the inclination of the tunnel 1.

Peripheral edge 7 on the near side in the traveling direction of the center 3
As shown in FIG. 3A, the peripheral edge 7 is an overlap flange in which a plate member 36 is attached to the rear end of the center 3 and protrudes rearward by about 10 cm. (Hereinafter referred to as a code SW) 12 are attached at four intervals in the lateral width direction of the center 3.

As shown in FIG. 3C, the cord SW12 is composed of two flat braided wires (ultrafine bundled copper wires) 30 and a pressurized conductive rubber (silicone rubber to which metal fine particles are added) 31 interposed therebetween. Facing each other, and furthermore, these (insulating,
This is covered with a silicone rubber 32 (rich in flame retardancy and pressure resistance) and formed into a rod shape, which is further housed in a protective cover 33 made of rubber as shown in FIG. As shown in (a), an elongated slit 34 is formed in the overlap flange 7 and the upper end of the protective cover 33 is mounted in the slit 34 so as to protrude by about 5 mm.

When the cord SW12 hits the upper part, the protective cover 33 and the silicone rubber 32 are pushed by the pressure, and when the pressure is applied to the pressurized conductive rubber 31 in the silicone rubber 32, the same is applied. The pressurized conductive rubber 31 changes from the insulated state to the conductive state, and the two flat braided wires 30 are brought into an electrically contacting state and turned on.

A sealing material 35 is attached to the base of the overlap flange 7 along the arch-shaped outer peripheral surface thereof.
It does not flow out to the W12 side.

Next to the portal type structure 2, the lateral inclinometer 10,
A control device (control panel) 13 that receives a detection signal from the front / rear inclinometer 11 and the detection signal from the code SW 12, sends an operation control signal to the electric lifting jack 4 and the electric traversing device 5, and moves the center 3 is attached. . This control panel 13
As shown in FIG. 4, a large number of indicator lights and push buttons are arranged in groups A to E on the front panel. Hereinafter, the function of the control panel 13 will be described in detail for each group.

Group A has five indicator lights.
Power reception indicator, code SW operation indicator (lower L), code SW operation indicator (upper L), code SW
An operation indicator light (R upper) and a code SW operation indicator light (R lower) are provided. The power receiving indicator lights the power supply (AC200
The lamp which lights up when V) is supplied, the code SW operation indicator light is a lamp which lights up when something hits the code SW12, and the lower part of L is the code SW12 attached to the lower left of the overlap flange 7 and the upper part of L is the code SW12. Code SW1 attached to the upper left of the overlap flange 7
The upper part of R monitors the state of the code SW12 attached to the upper right of the overlap flange 7, and the lower part R monitors the state of the code SW12 attached to the lower right of the overlap flange 7.

There are five push buttons in group B. An emergency stop push button, a manual / automatic switch push button,
An automatic-up push button, an automatic stop push button, and an automatic-down push button. Hereinafter, various operations when each push button is pressed will be described in order.

When the emergency stop push button is pressed, all outputs of the sequencer are stopped. The return is performed by turning the push button in the direction of the arrow in the figure (the push button protrudes forward).

The manual / automatic switching push button is a switch for switching between manual and automatic. When manual is selected, the electric jack 4 for elevation and the electric transverse feeder 5 can be manually operated by pendant switches provided in each part. Become. When Auto is selected, Auto-up push button, Auto stop push button, Auto-
The automatic operation of the center 3 by the lower push button can be performed.

When the automatic-up push button is pressed, the operation from the first step to the sixth step, which will be described below, is performed, and the ascent setting of the center 3 is performed.

In the first step, the inclination in the width direction of the front part of the center 3 is checked based on the detection signal of the lateral inclinometer 10 in front of the center 3, and when it is not horizontal, it is on the front side. A control signal is output to the electric jack 4 for lifting and lowering, and the electric jack 4 for lifting and lowering is
The horizontal inclination of the front part is horizontal.

Subsequently, based on the detection signal of the lateral inclinometer 10 behind the center 3, the inclination of the rear part of the center 3 in the width direction is checked. A control signal is output to the electric jack 4, and the electric jack 4 is moved to make the inclination of the rear part of the center 3 horizontal in the horizontal direction.

Subsequently, based on the detection signal of the front / rear inclinometer 11 of the center 3, the front / rear inclination of the center 3 is checked, and when the center 3 is not horizontal, a control signal is sent to the front / back electric jacks 4 for elevation. Then, the electric jack 4 is moved to make the tilt of the center 3 in the front-rear direction horizontal.
If the front and rear inclinometer 11 is tilted in accordance with the inclination of the tunnel 1, the center 3 is also set to be tilted in the same manner as the tunnel 1. During this time, if any one of the code SW12 of the center 3 is O
When the value reaches N, a control signal is sent to all the electric jacks 4 for raising and lowering, and the electric jacks 4 for lowering and lowering are lowered for 30 seconds to lower the sentry 3, and the above operation is repeated again.

Subsequently, a control signal is output to the four lifting / lowering electric jacks 4 at the front, rear, left and right of the center 3, so that all the lifting / lowering electric jacks 4 are tuned and moved, and the center 3 is raised in parallel.

In the second step, when any one of the cords SW12 is turned on when the overlap flange 7 of the center 3 comes into contact with the poured concrete 8 after the completion of the first step, the timer continues thereafter. The lifting electric jack 4 is moved for only one second to raise the whole sentry 3 (the rising of the sentry 3 stops after one second).

Subsequently, ON / OFF of each code SW12
Check the status and make sure that at least the code SW12
If it is ON, the process proceeds to the fifth step.

In the third step, as shown in FIG. 7, when only the code SW12 on the left side is turned on as shown in FIG. Slide. Then, as shown in FIG. 8, the center 3 is slid rightward until the right code SW12 is turned on, and the moving time T during this time is counted and stored in a memory. The center 3 is laterally slid to the left by 2 and stopped (in this state, the center 3 is usually arranged at the center of the tunnel 1). Then, it proceeds to the fifth step.

In the fourth step, when only the code SW on the right side is initially turned on in the second step, a control signal is output to the electric traversing device 5 to slide the sentr 3 to the left side. The center 3 is horizontally slid to the left until the code SW12 on the left side is turned on, the movement time T during this time is counted and stored, and the center 3 is moved to the right by half T / 2 of the movement time. To stop (in this state, the center 3 is usually located at the center of the tunnel 1). Then the fifth
Proceed to step.

The fifth step is the electric lifting and lowering jack 4
Are raised in synchronism, and the center 3 is raised in parallel.
When one of the codes SW12 is turned on, the sentence 3 is raised for only one second thereafter. The center 3 is slid laterally by the electric traversing device 5 on the side opposite to the code SW 12 turned on during this time, and at least the left and right code SWs are turned on.
When 12 is turned on one by one, the first set is completed and the process proceeds to the sixth step. However, the code SW12 on both sides
If is not turned on one by one, the process returns to the first step and the operation up to this point is performed again.

In the sixth step, after the completion of the fifth step, the entire lifting electric jack 4 is synchronized and raised for one second.
If all the four cords SW12 are turned on during this time, the final setting of the sentry 3 is completed (then, the sentry 3 is raised for a desired time and the overlap flange 7 is brought into close contact with the poured concrete 8). good). If all of the four codes SW12 are not turned on, an inspection is performed by an operator.

When the automatic stop push button is pressed, the automatic operation is stopped at that point and the sentence 3 is temporarily stopped.

When the automatic-lower push button is pressed, the electric jack 4 for elevating and lowering automatically lowers in conjunction therewith, and the center 3
Lower by 0 cm.

Group C has nine indicator lights.
From the upper left of the middle, the front-lower left indicator light, the previous level OK indicator light, the front-lower right indicator light, from the middle left in FIG.
The lower left indicator light, the rear level OK indicator light, the rear-right lower indicator light, the front / rear front lower indicator light, the front / rear level OK indicator light, and the front / rear lower indicator light from the lower left of FIG.

The front-left descending indicator light indicates that the inclinometer 10 in front of the center 3 is lowering left, that is, the electric jack 4 for lifting and lowering the front left side of the center 3 is lower than the other parts. Lights when the button is on (auto-up only when the up button is not pressed). When the automatic-up button is pressed, the electric jack 4 for raising and lowering on the front left blinks at intervals of 0.2 seconds during the ascending operation for level correction at the time of automatic ascent.

The front level OK indicator light is turned on when the lateral inclinometer 10 in front of the center 3 is horizontal, that is, when the horizontal direction in front of the center 3 is horizontal (automatically). -Only when the up button is not pressed).

The forward-downward-indicating indicator light indicates that the inclinometer 10 in front of the center 3 is down-sloping, that is, the electric jack 4 for lifting and lowering the front right side of the center 3 is lower than the other parts. Lights when the button is on (auto-up only when the up button is not pressed). When the automatic-up button is pressed, the front right lifting electric jack 4 blinks at intervals of 0.2 seconds during the ascending operation for level correction during automatic ascent.

The rear-left descending indicator light is used when the lateral inclinometer 10 behind the center 3 is down-sloping, that is, the portion of the electric jack 4 on the left side behind the center 3 is lower than the other portions. Lights when the button is on (auto-up only when the up button is not pressed). When the automatic-up button is pressed, the rear left electric jack 4 blinks at intervals of 0.2 seconds during the ascending operation for level correction during automatic ascent.

The rear level OK indicator light is turned on when the lateral inclinometer 10 behind the center 3 is horizontal, that is, when the horizontal direction behind the center 3 is horizontal (automatically). -Only when the up button is not pressed).

The rear-downward-indicating indicator lights when the inclinometer 10 behind the center 3 is down-sloping, that is, the portion of the electric jack 4 for raising and lowering right behind the center 3 is lower than the other portions. Lights when the button is on (auto-up only when the up button is not pressed). When the automatic-up button is pressed, the rear right lifting electric jack 4 blinks at intervals of 0.2 seconds during the ascending operation for level correction during automatic ascent.

The front / rear down indicator light indicates that the front / rear inclinometers 11 before and after the center 3 are in front down.
That is, the light is turned on when the electric lifting jack 4 on the front side of the center 3 is lower than the rear part (only when the automatic-up button is not pressed). When the automatic-up button is pressed, the front elevation electric jack 4 blinks at an interval of 0.2 seconds during the ascending operation for level correction during automatic ascent.

The front and rear level OK indicator lights indicate that the center 3
Is lit when the front and rear inclinometers 11 before and after are horizontal, that is, when the front and rear direction of the center 3 is horizontal (only when the auto-up button is not pressed).

The front / rear down indicator light indicates that the front / rear inclinometers 11 before and after the center 3 are down.
That is, the light is turned on when the lifting electric jack 4 on the rear side of the center 3 is lower than the front part (only when the automatic-up button is not pressed). When the automatic-up button is pressed, the rear elevation electric jack 4 blinks at an interval of 0.2 seconds during the ascending operation for the level correction at the time of automatic ascent.

Group D has three indicator lights.
From left inside, front-water shortage indicator light, rear-water shortage indicator light,
Water shortage indicator lights around.

The front-water shortage indicator light is illuminated at one-second intervals when the cylinder 12 of the lateral inclinometer 10 in front of the center 3 is short of water.

The rear-water shortage indicator light is turned on at one-second intervals when the cylinder 12 of the lateral inclinometer 10 at the rear side of the center 3 is short of water.

The water shortage indicator lights up at intervals of one second when the cylinder 12 of the front and rear inclinometer 11 of the center 3 is short of water.

Group E has seven indicator lights, a first step indicator light, a second step indicator light, a third step indicator light, a fourth step indicator light, a fifth step indicator light, in order from bottom to top. The sixth step indicator light and the setting completion indicator light.

Each of the above-mentioned step indicators is turned on each time each step is completed when the automatic-up push button in the group B is pressed. When the setting of the center 3 is finally completed, the setting completion indicator light is turned on.

[0080]

According to the method for automatically setting a centre of the present invention and the apparatus for automatically setting a centre used therein, the electric jack 4 for elevating and lowering only during the first concrete placement.
The centrifuge 3 is set by controlling the electric traverse device 5 and the electric traverse device 5 by any means, and thereafter, every time the concrete is poured into the gap 6 formed between the inner wall surface of the tunnel 1 and the centur 3 Then, the centrelle 3 is contracted inward, lowered, and removed from the mold. In this state, the centrelle 3 is advanced to the depth of the tunnel 1 by the portal structure 2, and is driven into the perimeter 7 on the front side in the traveling direction of the centrelle 3. The tip 9 of the concrete 8 overlaps, and then the center 3
When the direction of the front and rear directions of the tunnel 1 and the direction of the tunnel 1 are made to coincide with each other, the position of the tunnel 1 and the center 3 is automatically adjusted thereafter, so that the workability is remarkably improved as compared with the conventional manual operation. In addition, there is no accident in which the center 3 hits the concrete strongly, so that the safety is high.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of an automatic setting device of a sentence of the present invention.

2 (a) is a front view of the left and right inclinometer attached to the automatic center setting device of FIG. 1 with a capacitance type proximity switch removed, and FIG. 2 (b) is a side view of the left and right inclinometer. .

3A is a cross-sectional view showing an example of mounting a contact sensor, FIG. 3B is a cross-sectional view including a protective cover of the contact sensor, and FIG. 3C is a perspective view showing the structure of the contact sensor.

FIG. 4 is a perspective view of a control device attached to the automatic setting device of the center of FIG. 1;

FIG. 5 is a view for explaining the automatic centre setting method of the present invention, and is a view showing a state in which after removing the concrete, the removed centur is pulled out in the tunnel excavation direction. (A) is a front view thereof, and (b) is a top view thereof.

FIG. 6 is a view for explaining the automatic centre setting method of the present invention, showing a state in which the pulled-out centur is aligned for the next concrete casting. (A) is a front view, and (b) is a top view.

FIG. 7 is a view for explaining a method of automatically setting a sentence according to the present invention, showing a state in which the sentence is slid laterally by the setting device of FIG. 1; (A) is a front view, and (b) is a top view.

FIG. 8 is a view for explaining a method of automatically setting a sentence of the present invention, showing a state in which the sentry is horizontally slid in a direction opposite to that of FIG. 7 by the setting device of FIG. 1 to perform centering; Figure. (A) is a front view, and (b) is a top view.

FIG. 9 is a diagram illustrating a method of automatically setting a sentence according to the present invention, and is a diagram illustrating a state where the sentence is set to be raised by the setting device of FIG. And (a)
Is a front view, and (b) is a top view.

FIG. 10 is a front view of a center used for a conventional tunnel lining concrete placing work.

FIGS. 11A and 11B are explanatory diagrams for explaining a method of setting the sentence in FIG. 10, wherein FIG. 11A is a front view and FIG. 11B is a top view.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Tunnel 2 Gate type structure 3 Center 4 Electric jack for raising and lowering 5 Electric transverse feeder 6 Air gap 7 Perimeter 8 Concrete poured 9 Tip part 10 Lateral inclinometer 11 Front and rear inclinometer 12 Contact sensor 13 Control device 14 Lateral inclination measuring cylinder 15 Horizontal connecting pipe 16 Sensor 17 Cylinder for front and rear inclination measurement 18 Horizontal connecting pipe 19 Sensor

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Hiroshi Nakajima 209 Ogifu, Takaoka-shi, Toyama In-house Saga Industrial Co., Ltd. (56) References Hikaru Hei 6-24098 (JP, U)

Claims (4)

(57) [Claims] 1. A center (3) set on a portal (2) moving in a tunnel (1) is mounted between the center (3) and the portal (2). The electric jack for elevating and lowering (4) and the electric jack for elevating and lowering (4) are moved in a desired direction by an electric traversing device (5) which slides laterally in the width direction of the sentre (3), and the sentre (3) is tunneled. (1) A method for automatically setting a centur, comprising the steps of the following (1) to (4), wherein the method comprises the steps of: . Each time the concrete is poured into the space (6),
A step of shrinking the side of the centur (3) inward and lowering the top end to separate from the concrete on which the centur (3) is cast. . In this state, the center (3) is advanced to the depth of the tunnel (1) by the portal structure (2), and the peripheral edge (7) of the center (3) on the rear side in the traveling direction is formed of concrete (8). A step of stopping at a position that vertically overlaps the tip (9). . Front and back direction of the center (3) and tunnel (1)
A step of matching the direction of the object. . The lifting / lowering electric jack (4) moves the center (3) based on the detection data of the lateral inclinometer (10) provided in the center (3) so that the inclination in the width direction becomes a predetermined angle. A step of automatically adjusting the inclination of the center (3) in the width direction. . The lifting / lowering electric jack (4) moves the center (3) based on the detection data of the front-rear inclinometer (11) provided on the center (3) so that the front-rear inclination becomes a predetermined angle. A step of automatically adjusting the inclination of the center (3) in the front-rear direction. . The lifting electric jack (4) raises the sentry (3) in parallel, and the contact sensor (12) provided on the periphery (7) of the sentry (3) drives the concrete (8).
Stopping the rise of the sentence (3) when the contact with the front end (9) is detected. 2. A center (3) set on a portal structure (2) moving in a tunnel (1) is mounted between the center (3) and the portal structure (2). The electric jack for elevating and lowering (4) and the electric jack for elevating and lowering (4) are moved in a desired direction by an electric traversing device (5) which slides laterally in the width direction of the sentre (3), and the sentre (3) is tunneled. (1) A method for automatically setting a centur, comprising the steps of the following (1) to (4), wherein the method comprises the steps of: . Each time the concrete is poured into the space (6),
A step of shrinking the side of the centur (3) inward and lowering the top end to separate from the concrete on which the centur (3) is cast. . In this state, the center (3) is advanced to the depth of the tunnel (1) by the portal structure (2), and the peripheral edge (7) of the center (3) on the rear side in the traveling direction is formed of concrete (8). A step of stopping at a position that vertically overlaps the tip (9). . Front and back direction of the center (3) and tunnel (1)
A step of matching the direction of the object. . The lifting / lowering electric jack (4) moves the center (3) based on the detection data of the lateral inclinometer (10) provided in the center (3) so that the inclination in the width direction becomes a predetermined angle. A step of automatically adjusting the inclination of the center (3) in the width direction. . The lifting / lowering electric jack (4) moves the center (3) based on the detection data of the front-rear inclinometer (11) provided on the center (3) so that the front-rear inclination becomes a predetermined angle. A step of automatically adjusting the inclination of the center (3) in the front-rear direction. . The lifting electric jack (4) raises the sentry (3) in parallel, and the contact sensor (12) provided on the periphery (7) of the sentry (3) drives the concrete (8).
Stopping the rise of the sentence (3) when the contact with the front end (9) is detected. . In this state, when it is determined by the contact sensor (12) that the concrete contact position of the periphery (7) is offset to one side in the width direction of the centre (3), the electric traverse device (5) moves the centre (3) to the aforementioned position. The contact sensor (12) is moved laterally in the direction opposite to the one-sided direction so that the contact sensor (12) contacts the cast concrete (8), and then the centur (3) is laterally moved in the opposite direction by half of the lateral movement distance. After that, the electric jack (4) for raising and lowering raises the center (3) in parallel, and the contact sensor (12) on the periphery (7) of the center (3) is connected to the concrete (8). The step of stopping the center (3) once the contact is detected is performed once or more. 3. A center (3) set on a portal structure (2) moving in a tunnel (1) is mounted between the center (3) and the portal structure (2). The electric jack for elevating and lowering (4) and the electric jack for elevating and lowering (4) are moved in a desired direction by an electric traversing device (5) which slides laterally in the width direction of the sentre (3), and the sentre (3) is tunneled. In a centrifugal setting device for setting and setting a gap (6) for placing concrete between the inner wall surface of (1) and a lateral inclinometer (10) for detecting a tilt in a width direction of the centur (3). ), A front and rear inclinometer (11) for detecting the inclination in the front and rear direction, and when an object hits the peripheral edge (7) on the front side in the moving direction of the sentre (3), it is detected and detected. Contact to determine which side in the width direction is hit When a command to start setting of the sensor (12) and the center (3) is sent, the inclinometer (1) is sent.
0), a command is sent to the electric lifting jack (4) and the electric traversing device (5) based on the detection data of the front and rear inclinometer (11) and the contact sensor (12), and the electric lifting jack (4) is sent. An automatic setting device for a centr, comprising: a control device (13) for moving a motor and an electric traverse device (5). 4. The lateral inclinometer (10) comprises a sentence (3).
The two cylinders (14) for measuring the lateral inclination, which contain the liquid and are arranged in the width direction of the cylinder (14), and the two cylinders (14) for allowing the liquid inside to move between the cylinders (14) for measuring the lateral inclination. ), And a sensor (16) for detecting the height of the liquid in each of the cylinders for measuring the lateral inclination (16).
1) is a front / rear oblique measurement cylinder (17) containing a liquid which is arranged at a distance in the front / rear direction of the center (3), and the liquid inside the front / rear oblique measurement cylinder (17) flows between the two cylinders. Horizontal connecting pipe (18) connecting both cylinders (17) so that they can be measured, and cylinders (17) for measuring the forward and backward inclination
4. The automatic centr setting device according to claim 3, further comprising a sensor for detecting a height of the liquid in the centrifuge.