JP4646466B2 - Tunnel spraying device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a spraying device that sprays a spraying material onto a tunnel inner wall surface in a tunnel.
[0002]
[Prior art]
Conventionally, as a method of laminating various materials such as refractory materials on the inner surface of the tunnel, a plurality of panels manufactured in advance at a factory etc. are transported and carried to the site, and these panels are mounted on the inner wall surface of the tunnel with supporting hardware. A method of mounting has been proposed.
However, this technique is not publicly known.
[0003]
In addition, there is a method of spraying the various materials to a certain thickness. In this case, a spraying machine in which a boom for holding the spray nozzle is attached to a movable carriage and the spray nozzle is operated by operating the boom is provided. It was used or the nozzle hose was directly held in the hand and sprayed.
[0004]
[Problems to be solved by the invention]
However, when the panel is attached to the inner wall surface of the tunnel, the tunnel is often in service or under construction, and there are problems such as securing work space, restriction of construction time, and security.
[0005]
In the case of a tunnel with a large cross section, the number of panels is large, so the number of transport vehicles that transport and transport increases, causing traffic congestion on the transport route and adversely affecting the surrounding environment.
[0006]
Furthermore, when performing spraying work, uniforming the spray thickness requires considerable skill when performed by workers, and even if a spraying machine is used, it is difficult to control and is even on the inner wall surface of the tunnel. It was not easy to spray on.
[0007]
In view of the above problems, in the present invention, it is possible to spray safely even in a tunnel in service without securing a wide working place, and it is possible to easily make the spray thickness uniform. It is an object to provide a spraying device.
[0008]
[Means for Solving the Problems]
  In view of such a problem, the invention described in claim 1 is an in-tunnel spraying device that sprays a spray material onto a tunnel inner wall surface, and is formed along the tunnel circumferential direction inside the tunnel inner wall surface. A spraying carriage that has a traveling rail and is movable in the longitudinal direction of the tunnel, and a spray that is mounted on the spraying carriage and that can travel around the circumferential direction of the tunnel within a predetermined movement range via a gear mechanism along the traveling rail. A spray nozzle that is positioned perpendicularly to the inner wall surface of the tunnel, which is a spray surface,SaidSpray nozzleIsIt can be translated by a predetermined width in the longitudinal directionAnd moving forward and backward in the direction perpendicular to the inner wall surface of the tunnel, by moving the spray nozzle forward and backward based on the amount of displacement measured by a displacement measuring instrument for measuring the spray distance, Keep the distance from the inner wall of the tunnel constant,The sprayer is provided with an encoder for measuring the position in the circumferential direction of the tunnel.The spray port of the spray nozzle is capable of circular motion parallel to the inner wall surface of the tunnel.It is characterized by that.
[0009]
  The invention described in claim 2 has the configuration described in claim 1,The circular motion of the spray nozzle of the spray nozzle is based on a mechanism that converts parallel link motion into circular motion.It is characterized by that.
[0010]
  The invention described in claim 3 includes, in addition to the configuration described in claim 1 or 2,The spraying machine is provided with a finishing device for finishing the surface of the sprayed surface after spraying the spray material, and the finishing device is provided with a trowel member movably, When spraying the spray material from the spray nozzle, it is retracted from the spray range, and when finishing the spray surface, it moves into the spray range and finishes the solder surface by smoothing the spray surface with the iron member. MadeIt is characterized by that.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below.
[0014]
In the present embodiment, the present invention is applied to a case where a spray material such as a refractory material is sprayed onto a segment of the inner wall surface of a tunnel mainly in secondary lining of a shield tunnel.
[0015]
However, the tunnel is not particularly limited to a shield tunnel, and concrete, mortar, or the like can be used as the spray material.
[0016]
    Embodiment 1 of the Invention
  1 to FIG. 1 about the first embodiment5Will be described.
[0017]
FIG. 1 is a longitudinal sectional view of a shield tunnel, and FIG. 2 is a circumferential sectional view of the shield tunnel. In FIG. 1, a shield machine (not shown) and a plurality of carriages for moving the shield machine are arranged on the face side of the shield tunnel 1, and a shield is obtained by assembling a plurality of segments 2 while excavating natural ground with the shield machine. Tunnel 1 is constructed. The excavated earth and sand are conveyed to the shaft by the shear steel wheel 4 in FIG. In the present embodiment, the excavated earth and sand transporting steel wheel 4 is used, but a pumping system such as a pump may be used.
[0018]
As track equipment for the bogie and shear steel wheel 4 for moving the shield machine, a plurality of steel materials 5 are fixed to the segment 2 and a rail 6 is laid.
[0019]
The spray cart 3 is installed on the side of the shaft that does not hinder the shield. A traveling rail 7 formed along the circumferential direction of the tunnel is installed on the spraying carriage 3, and a sprayer 8 is attached to the traveling rail 7 so as to travel freely. In the present embodiment, the traveling rail 7 is formed in a substantially circular shape so that the distance between the inner wall surface of the tunnel and the sprayer 8 is substantially constant.
[0020]
The sprayer 8 is provided with a spray nozzle 9 positioned substantially perpendicular to the inner wall surface of the tunnel. In addition, although the spray nozzle 9 used in this Embodiment is one, you may install and use a several spray nozzle.
[0021]
The pumping pump 10 is connected to the shaft side of the spraying carriage 3, the mixer 11 is installed on the upper part of the pumping pump 10, and the material truck 18 is provided on the upper part of the mixer 11. Material tanks 12, 13 and 14 for the materials are provided. A hopper 15 for supplying the spray material to the mixer 11 is installed between the material carriage 18 and the mixer 11. Further, an air compressor 16 for releasing the spray material under pressure and a pressure adjusting device 17 for adjusting the pressure are provided.
[0022]
The spraying cart 3, the material cart 18, the mixer 11, the pressure feed pump 10, the air compressor 16, the pressure adjusting device 17 and the like are collectively referred to as a spraying device according to the present invention. It is installed on the rail 6 so as to be movable. As a method for moving the spraying device, a battery car or a self-propelled type may be used. In the present embodiment, a track system in which the rail 6 is laid is used, but a moving means using tires may be used.
[0023]
A lower part of the material tank 12 is provided with an electromagnetic valve 19 that adjusts the supply amount of the material, and a lower part of the electromagnetic valve 19 is provided with a flow meter 20 that measures the discharge amount of the material. The discharged material is supplied from the hopper 15 to the mixer 11. The material tanks 13 and 14 are also supplied to the mixer 11 in the same manner as the material tank 12.
[0024]
Water is supplied to the mixer 11 from a water source through a water pipe 25. The water pipe 25 is provided with an electromagnetic valve 26 for adjusting the amount of water, and a flow meter 27 is provided on the far side of the electromagnetic valve 26 from the water source.
[0025]
The pumping pump 10 is operated by an electric motor 28 and pumps the spray material to the sprayer 8. A discharge port 29 of the pressure pump 10 is connected to a material hose 30, and a pressure gauge 31, a flow meter 32, and an RI density moisture meter 33 for measuring the discharge pressure are disposed therebetween. A blowing tube 34 is connected to the other end of the material hose 30.
[0026]
The pressure adjuster 17 and the air pipe 35 disposed in the spraying machine 8 are connected by an air hose 36, and an electromagnetic valve 37 is disposed at a connection portion between the air pipe 35 and the air hose 36. The flow rate of compressed air can be adjusted.
[0027]
As a measuring device for measuring the position of the spray cart 3, for example, an encoder 38 is installed on the wheel of the spray cart 3. A light wave range finder may be used as the measuring device.
[0028]
Data measured using the encoder 38 is transmitted to a computer 42 in a control room 41 provided on the ground via an electric wire (not shown), a control panel 39, and an electric wire 40. In this embodiment, the computer 42 and the display 43 are installed in the control room 41 on the ground, but the installation location may be in a tunnel.
[0029]
The electric motor 28, the air compressor 16, the encoder 38 and the like are connected to the control panel 39 by electric wires, and electricity is supplied from a power source (not shown).
[0030]
Further, a temperature measuring device (not shown) is installed in the vicinity of the mixer 11 to measure the temperature.
[0031]
Next, the structure of the spraying machine 8 is demonstrated using FIG. 3, FIG.
[0032]
3 is a cross-sectional view of the sprayer 8 taken along line AA in FIG. 2, and FIG. 4 is a cross-sectional view of the sprayer 8 taken along line BB in FIG. As shown in these drawings, a fixed gear 45 is provided on the inner peripheral side of the rib 44 provided in the spray cart 3, and the fixed gear 45 and the operating gear 46 disposed in the sprayer 8 are engaged with each other. A tire 47 is provided on the outer peripheral side of the rib 44. That is, the rib 44 is sandwiched between the operating gear 46 and the tire 47.
[0033]
The tire 47 is pivotally supported by a frame 48 so as to be rotatable. In addition, the drive gear 50 and the support gear 51 of the electric motor 49 fixed to the frame 48 are rotatably meshed, and the support gear 51 and the operating gear 46 are engaged. By driving the electric motor 49, the sprayer 8 travels from the spraying range A point to the B point of the traveling rail 7 along the circumferential direction of the tunnel on the spraying carriage 3. Limit switches (not shown) are installed at points A and B which are limit points.
[0034]
An encoder 52 for position measurement in the tunnel circumferential direction is engaged with the drive gear 50 of the electric motor 49. A plurality of encoders 52 may be provided to increase the measurement accuracy.
[0035]
A first jack 53 is fixed to the frame 48, and a jack box 54 is fixed to the rod side of the first jack 53, and the jack box 54 is fixed to a fixed box 55. The jack box 54 is slidable at a lower part by a steadying member 56, and an upper part is slidable by a plurality of sliding bars 57 that fix the fixing box 55 to the frame 48.
[0036]
By extending and contracting the first jack 53, the slide member 58 slides in the tunnel longitudinal direction, and the jack box 54, the fixed box 55, and the spray nozzle 9 are integrally guided by the slide member 58 and tunnel longitudinal direction C. Slide between points D from point. Limit switches are installed at the limit points C and D.
[0037]
A displacement measuring device 59 is installed on the frame 48, and a wire for measuring displacement is fixed to the jack box 54. Based on the amount of displacement measured by the displacement measuring device 59, the position of the jack box 54 in the tunnel longitudinal direction is measured. A plurality of the displacement measuring devices 59 may be provided to increase the measurement accuracy.
[0038]
A second jack 60 is inserted and fixed in the jack box 54. The blowing pipe 34 and the air pipe 35 are fixed to the second jack 60 rod side, and the air pipe 35 is joined in the vicinity of the blowing port of the blowing pipe 34.
[0039]
An ultrasonic displacement sensor 63 stored in a storage box 62 is fixed to the spray tube 34 as a measuring instrument for measuring the spray thickness 61. As a measuring instrument for measuring the spray thickness 61, in addition to the ultrasonic displacement sensor 63, an optical rangefinder can be used. However, when comparing the size and sensitivity of the measuring instrument, an ultrasonic displacement sensor is used. Is preferred. The storage box 62 is provided with a lid 64 on the spray nozzle 9 side, and the lid 64 is opened and closed by a driving device (not shown). When the ultrasonic displacement sensor 63 does not perform measurement, the lid 64 can be closed to protect the ultrasonic displacement sensor 63 from the sprayed rebound material. A rebound receiver 65 that protects the sprayer 8 from the rebound material that is sprayed is also fixed to the spray pipe 34. A spray nozzle 9 for adjusting the spray state is provided at the tip of the spray pipe 34. The adjustment of the spray nozzle 9 may be controlled manually or by providing a driving device.
[0040]
When the second jack 60 is expanded and contracted, the spray nozzle 9, the ultrasonic displacement sensor 63, and the rebound receiver 65 advance and retract in the vertical direction with respect to the inner wall surface of the tunnel.
A displacement measuring device 66 is installed on the frame 48, and a displacement measuring wire is fixed to the rebound receiver 65. The spray distance 67 is measured by the amount of displacement measured by the displacement measuring device 66. A plurality of displacement measuring devices 66 may be provided to increase the measurement accuracy.
[0041]
Measurement data of the encoder 52, the displacement measuring devices 59 and 66, and the ultrasonic displacement sensor 63 are transmitted to the computer 42 in the control room 41 via an electric wire (not shown), the control panel 39 and the electric wire 40. The various data transmitted are calculated / analyzed by the computer 42. Based on the calculation / analysis result, the spraying position, the spraying distance 67, the spraying thickness 61, etc. are controlled. The control status and the like are displayed with images and numerical values.
[0042]
The sprayer 8 is provided with a finishing device 68 for finishing the sprayed surface of the sprayed surface after spraying. The finishing device 68 includes an electric motor 69 fixed to the frame 48 and a trowel 70 that is movably provided on a drive shaft of the electric motor 69. The trowel 70 is retracted from the spraying range when spraying the spray material from the spray nozzle 9, and moves to the spraying range when finishing the spraying surface to smooth the spraying surface and finish the soldering. It is a mechanism.
[0043]
  The figure below5The mechanism of the spray control in the first embodiment will be described with reference to the flow control diagram in the tunnel.
[0044]
First, the movement control of the spray cart 3, the spray machine 8, and the spray nozzle 9 will be described.
[0045]
First, the position of the spray cart 3 is measured by the encoder 38 installed in the spray cart 3, and the measurement data is transmitted to the computer 42 (S2). By calculating and analyzing the transmitted measurement data by the computer 42, the position of the spray cart 3 is grasped, and then the spray cart 3 is moved to the spray position by a battery car or the like (not shown) (S3).
[0046]
Next, the position of the sprayer 8 is measured by the encoder 52, and the measurement data is transmitted to the computer 42 (S2). By calculating and analyzing the transmitted measurement data by the computer 42, the position of the sprayer 8 in the circumferential direction of the tunnel is grasped, the motor 49 of the sprayer 8 is driven, and the sprayer 8 is set at the spraying start point. Move to a certain point A (S5).
[0047]
Next, the tunnel longitudinal position of the spray nozzle 9 is measured by the displacement measuring device 59 (S2), and the measured data is transmitted to the computer. The transmitted measurement data is calculated and analyzed by the computer 42, the tunnel longitudinal direction position of the spray nozzle 9 is grasped, and the first jack 53 is expanded and contracted to determine the tunnel longitudinal direction position of the spray nozzle 9 at the spray start point. Is moved to point C (S7).
[0048]
Next, the spray distance 67 between the spray nozzle 9 and the spray wall surface is measured by the displacement measuring device 59 (S2), and the measurement data is transmitted to the computer. The transmitted measurement data is calculated and analyzed by the computer 42, and the second jack 60 is expanded and contracted in the vertical direction with respect to the inner wall surface of the tunnel based on the analysis result, and moved to the set spray distance 67 (S9). For the measurement of the spray distance 67, an ultrasonic displacement sensor 63 may be used instead of the displacement measuring device 59.
[0049]
Next, a mechanism for feedback control of the spray material will be described.
[0050]
First, as various setting values relating to spraying, the spraying thickness 61, the spraying completion surface 71, the type and mixing ratio of the spraying material, the amount of water injected, the stirring condition of the spraying material (the rotation speed / stirring of the mixer 11) Time), discharge pressure / flow rate of spray material, discharge density / moisture of spray material, discharge pressure / flow rate of compressed air, type / opening of spray nozzle, moving speed of spray machine 8, spray nozzle 9 The moving speed and the spraying distance 67 are set (S1).
[0051]
Based on the set spray material and mixing ratio, the discharge amount of various spray materials is adjusted by the opening degree of the electromagnetic valves 19, 21 and 23 (S20). The discharge amount of the spray material is measured by the flow meters 20, 22 and 24, and the measurement data is transmitted to the computer 42. The transmitted measurement data is calculated and analyzed by the computer 42. When the discharge amount is not the set value, the opening degree of the electromagnetic valves 19, 21, and 23 is readjusted by feedback control so as to become the set value (S21). Various spray materials discharged from the material tanks 12, 13, and 14 are supplied to the mixer 11 from a hopper 15 installed below.
[0052]
Similarly, water is supplied to the hopper 15 by adjusting the opening of the electromagnetic valve 26 based on a preset water supply amount (S22). This supply amount is measured by the flow meter 27, and the measurement data is transmitted to the computer 42. The transmitted measurement data is calculated and analyzed by the computer 42, and when the water supply amount is not the set value, the opening degree of the electromagnetic valve 26 is readjusted by feedback control so as to become the set value (S23).
[0053]
Next, the various spray materials put into the mixer 11 are stirred at the set rotation speed and stirring time (S24). The rotation of the electric motor 28 is controlled so that the discharge pressure and discharge flow rate of the spraying material set in advance are set (S25). The spraying material opens a lid (not shown) by an opening / closing device (not shown) below the mixer 11, and the pump 10 (S26). The discharge pressure is measured by the pressure gauge 31, the discharge flow rate is measured by the flow meter 32, and the measurement data is transmitted to the computer 42 for calculation and analysis. Based on the analysis result, when the discharge pressure and the discharge flow rate of the spray material are not set values, the rotational speed of the electric motor 28 is readjusted by feedback control so as to be set values (S27). If it is a set value, the material discharge density and moisture are further measured by the RI density moisture meter 33 (S30), and if the measured material discharge density and moisture are different from the set value, confirmation and change of the water amount / retardation material are performed. (S31) When the set value is equal to the set value, the spray material is supplied from the material hose 30 to the spray nozzle 9 through the spray pipe 34.
[0054]
In addition, depending on the type of spray material, the supply order of various materials and water supplied to the mixer 11 may be set as appropriate.
[0055]
Next, the mechanism of feedback control of compressed air will be described.
[0056]
The pressure of the pressure regulator 17 and the opening of the electromagnetic valve 37 are adjusted so that the compressed air compressed by the air compressor 16 has a preset discharge pressure and discharge flow rate (S28). The discharge pressure and the discharge flow rate are measured using a pressure gauge and a flow meter (not shown) of the pressure regulator 17, and the measurement data is transmitted to the computer 42. The transmitted measurement data is calculated and analyzed by the computer 42. When the analysis result of the discharge pressure and the discharge flow rate of the compressed air is not the set value, the pressure of the pressure regulator 17 and the electromagnetic valve 37 are controlled by feedback control so that the set value is set. The opening degree is readjusted (S29). In the case of the set value, the compressed air discharged from the pressure regulator 17 is supplied from the air hose 36 through the air pipe 35 to the blowing pipe 34. Similarly, the spray material supplied to the spray pipe 34 is sprayed from the spray nozzle 9 to the segment 2 on the inner wall surface of the tunnel by the discharge pressure of the compressed air (S11).
[0057]
Thereafter, while spraying the spray material, the first jack 53 expands and contracts at a preset moving speed, and the spray nozzle 9 is moved from the longitudinal point C of the tunnel to the point D. When the spray nozzle 9 reaches the point D, the electric motor 49 is driven to move the sprayer 8 in the circumferential direction of the tunnel toward the point B at a set moving speed. Further, the first jack 53 is expanded and contracted at the set moving speed, and spraying is performed while moving the spray nozzle 9 from the tunnel longitudinal direction D point to the C point.
[0058]
The spraying procedure is repeated and the spraying range (1) A straight line passing through the intersection of the perpendicular to the tunnel inner wall from the point A and the inner wall of the tunnel and parallel to the longitudinal direction of the tunnel, 2) the tunnel from the point B A straight line that passes through the intersection of the perpendicular to the inner wall and the inner wall of the tunnel and is parallel to the longitudinal direction of the tunnel, (3) An intersection of a plane that passes through point C and is parallel to the circumferential direction of the tunnel, and (4) point D The tunnel inner wall portion surrounded by the intersection line between the plane parallel to the tunnel circumferential direction and the tunnel inner wall surface is sprayed.
[0059]
In addition, the operation | work which sprays the said spraying range can be interrupted on the way, or can be sprayed continuously.
[0060]
After the spraying of the spray range is completed, the lid 64 of the storage box 62 is opened by a driving device (not shown), and the spray thickness is measured by the ultrasonic displacement sensor 63 in the spray range (S12). . When the measured thickness is transmitted to the computer 42 and the result of calculation / analysis is that the spray thickness does not reach the set spray thickness 61, the corresponding portion is sprayed again. Insufficient thickness, insufficiency position, and insufficiency range are detected (S15), and it is further determined whether the defect range is a part or the whole of the spraying range (S16). After confirming the various set values Q on the display of the computer 42 and changing the settings as appropriate (S32), the entire spray range is sprayed again. When the defective range is a part of the spraying range, the spraying flow rate and the nozzle moving speed are changed (S17), and the shortage range is sprayed again from the moving step (S5) of the spraying machine 8. The various setting values Q may be automatically changed by the computer 42.
[0061]
When the spraying thickness reaches the set spraying thickness 61, the sprayer 8 is moved to point A or B, and the electric motor 69 is driven to move the iron 70 to a position perpendicular to the spraying surface. Thereafter, the electric motor 49 is driven, and the sprayer 8 equipped with the iron 70 is moved at a moving speed set between the points A and B in the circumferential direction of the tunnel to finish the soldering surface on the soldering surface (S13).
[0062]
  When the soldering finish is completed, the lid 64 of the storage box 62 is opened by a drive device (not shown), the spraying surface 71 is measured by the ultrasonic displacement sensor 63 in the spraying range, and the measurement data is transmitted to the computer 42. The The transmitted data is calculated and analyzed by the computer 42 to determine whether it is appropriate for the set spraying completion surface. When the measurement spraying completion surface 71 is insufficient for the setting spraying completion surface, the insufficient thickness, the insufficient range and the insufficient position are detected (S15), and the defective range isSprayA determination is made as to whether the entire range or a part of the range (S16). In the case of the entire range, after the monitoring person confirms the various setting values Q set in advance on the display 43 of the computer 42 and changes the settings as appropriate ( S32) The entire spray range is sprayed again. When the defective range is a part of the spraying range, the spraying flow rate and the nozzle moving speed are changed (S17), and the shortage range is sprayed again from the moving step (S5) of the spraying machine 8.
[0063]
When the spraying completion surface 71 is appropriate, it is determined whether or not the setting value Q has been changed by the current spraying (S18). If the setting value Q has not been changed or the defective spraying range is the whole, The moving carriage is moved to the next spraying position on the face side (S3), and the spraying procedure is repeated. When the spraying defective range is part, the various setting values Q are returned to the initial values (S19), and the processing is performed from the setting of the various setting values Q (S1).
[0064]
  While sprayingSprayAlthough the thickness can be measured, in order to protect the ultrasonic displacement sensor 63 from the rebound material of the spraying, it is preferable to perform the measurement after the spraying of the spraying range is completed.
[0065]
In this embodiment, the spray position is measured by the encoder 52 and the displacement measuring devices 59 and 66, but may be measured by using the ultrasonic displacement sensor 63. In this case, the ultrasonic displacement sensor 63 is fixed at a place where the spray pipe 34 which is a measurement target within the spray range can be visually recognized, and the measurement of the spray position is automatically and continuously measured.
[0066]
Furthermore, as a control method, there are no control method restrictions such as fuzzy control, PID control, and AI control. Moreover, it is good also as automatic control or manual control.
[0067]
[Embodiment 2 of the Invention]
A second embodiment of the present invention will be described with reference to FIGS. 6 is a cross-sectional view in the longitudinal direction of the tunnel in the second embodiment, FIG. 7 is a cross-sectional view in the circumferential direction of the tunnel, FIG. 8 is a cross-sectional view taken along line CC of FIG. It is sectional drawing which follows the DD line | wire of FIG.
[0068]
In the first embodiment, the material cart 18 is disposed above the mixer 11 and the hopper 15 is provided between the material cart 18 and the mixer 11. However, in the second embodiment, the material cart 18 installed on the rail 6 is The material cart 18 and the mixer 11 are connected to each other by a conveying device 101 that is a conveying pipe for spray material. Moreover, the shape of the spray cart 3 is different from that of the first embodiment, and the travel rail 7 of the spray cart 3 is always at the same distance from the inner wall surface of the tunnel.
[0069]
  Hereinafter, the sprayer 100 will be described with reference to FIG. In the first embodiment, the forward and backward movement of the spray nozzle 14 in the longitudinal direction of the tunnel is performed using the first jack 53, but in the second embodiment, instead of the first jack 53.Worm102 is used. In this embodiment, since the spray distance 67 is always constant, the spray nozzle 9 does not have a function of moving forward and backward vertically with respect to the inner wall surface of the tunnel.SprayA measuring instrument with a distance of 67 is not installed. Further, the finishing device 68 is not provided.
[0070]
A fixed gear 104 is provided on the outer peripheral side of the rib 103 of the spray cart 3, the fixed gear 104 is engaged with the operating gear 105 provided on the sprayer 100, and a tire 106 is provided on the inner peripheral side of the rib 103. Is provided. The rib 103 is sandwiched between the fixed gear 104 and the tire 106. The tire 106 is rotatably supported by the frame 107. The drive gear 109 and the support gear 110 of the electric motor 108 fixed to the frame 107 are rotatably meshed with each other, and the support gear 110 and the operating gear 105 are engaged. By moving the electric motor 108, the sprayer 100 travels from the point A to the point B along the circumferential direction of the tunnel on the traveling rail 7 on the spray cart 3. Limit switches (not shown) are installed at points A and B which are limit points.
[0071]
Further, an encoder 111 for measuring the circumferential position of the tunnel is engaged with the drive gear 109 of the electric motor 108. The drive gear 113 and the worm 102 of the electric motor 112 fixed to the frame 107 are rotatably meshed. Both ends of the worm 102 are rotatably supported by the frame 107, and the worm 102 and the worm box 114 are rotatably meshed with each other. The spray tube 115 and the air tube 116 are fixed through the worm box 114, and a spray nozzle 117 is attached to the tip of the spray tube 115. When the motor 112 is rotated, the spray nozzle 117 moves from the point C to the point D in the tunnel longitudinal direction as in the first embodiment. Limit switches are installed at the limit points C and D. An encoder 118 for position measurement in the tunnel longitudinal direction is engaged with the drive gear 113 of the electric motor 112. A plurality of encoders 118 may be provided to increase measurement accuracy.
[0072]
Other configurations and operations are the same as those of the first embodiment, and thus redundant description is omitted.
[0073]
Embodiment 3 of the Invention
A third embodiment will be described with reference to FIGS.
[0074]
In the first embodiment, the spray nozzle can move forward and backward in the tunnel longitudinal direction and in the direction perpendicular to the inner wall surface of the tunnel. In the second embodiment, the spray nozzle can move forward and backward in the tunnel longitudinal direction. In addition to the movement in the longitudinal direction of the tunnel, 3 performs a rotational movement parallel to the inner wall surface of the tunnel. By performing the spraying while making a circular motion, not only a more uniform spraying is possible, but also the spraying surface can be finished smoothly.
[0075]
FIG. 10 is a top view of the spraying machine 200 in the present embodiment, and FIG. 11 is a top partial cross-sectional view of the spraying machine 200 taken along line EE of FIG.
[0076]
A pedestal 202 is installed above the warm box 201. A support shaft 203 is fixed to the pedestal 202, and two pairs of worm wheels 204 are rotatably supported by the support shaft 203. A support shaft 205 is rotatably supported at a position equal to the distance between the two pairs of worm wheels 204 and a distance r from the center of the worm wheels 204 toward the inner wall surface of the tunnel. A crank 206 is fixed to the support shaft 205. The blowing pipe 207 and the air pipe 208 are fixed by a fixing member 209 at substantially the center position of the crank 206. Further, a storage box 211 that stores the ultrasonic displacement sensor 210 is fixed at substantially the center position of the crank 206. An electric motor 212 is fixed to the pedestal 202, one end of the worm 213 is fixed to the electric motor 212, and the other end is rotatably supported by the pedestal frame 214. Further, the worm 213 and the worm wheel 204 are meshed so as to be rotatable, and the pedestal frame 214 and the pedestal 202 are fixed.
[0077]
By rotating the motor 212, the worm 213 rotates. Along with this, the two pairs of worm wheels 204 rotate, the support shaft 205 rotates with the rotation radius r, and the crank 206 performs parallel link motion. Along with this movement, the blowing pipe 207, the air pipe 208, and the ultrasonic displacement sensor 210 fixed to the crank 206 perform a circular movement while drawing a rotation locus 215 having a rotation radius r. By adopting a mechanism for converting the parallel link motion into the circular motion without directly performing the circular motion, it is possible to prevent the piping such as the air pipe 208 and the spray pipe 207 from being twisted or tangled.
[0078]
Other configurations and operations are the same as those of the first embodiment, and thus redundant description is omitted.
[0079]
In the above embodiment, the description has been made in the form of spraying while building a tunnel. However, the present invention can also be used for a tunnel already used for roads, railways, and the like.
[0080]
【The invention's effect】
  As described above, according to the first aspect of the present invention, the in-tunnel spraying device sprays the spray material onto the inner wall surface of the tunnel, and is formed along the circumferential direction of the tunnel inside the inner wall surface of the tunnel. A spray carriage having a traveling rail and movable in the longitudinal direction of the tunnel, and a blower mounted on the spraying carriage and capable of traveling around the tunnel circumferential direction within a predetermined movement range via a gear mechanism along the traveling rail. The spray nozzle is provided with a spray nozzle positioned perpendicular to the inner wall surface of the tunnel, which is a spray surface, and the spray nozzle can be translated in a predetermined width in the longitudinal direction of the tunnel. Since the sprayer is provided with an encoder for measuring the position in the circumferential direction of the tunnel, the working space and time are compared with the work of attaching the panel to the tunnel. Safe in tunnels in service in without taking, it is possible to work efficiently. In addition, since the amount of materials necessary for work is transported and carried by the vehicle is smaller than that of the panel, traffic congestion can be reduced and the surrounding environment can be prevented from deteriorating. Furthermore, since the spraying can be performed while moving forward and backward by a predetermined width in the tunnel longitudinal direction while keeping the spray nozzle perpendicular to the inner wall surface of the tunnel, uniform spraying is possible.
  The spray nozzle can be moved back and forth in a direction perpendicular to the inner wall surface of the tunnel, and the spray nozzle is advanced and retracted based on a displacement amount measured by a displacement measuring device for measuring a spray distance. Since the distance from the inner wall surface of the tunnel is kept constant, the spray nozzle is placed on the inner wall surface of the tunnel even when the distance between the spray nozzle and the inner wall surface of the tunnel is not constant. By moving the position vertically and adjusting the position, the spray distance can be kept constant.
  Furthermore, since the spray port of the spray nozzle is capable of circular movement parallel to the inner wall surface of the tunnel, more uniform spraying is possible and the spray thickness is made constant. Becomes easy.
[0081]
  According to invention of Claim 2,The circular motion of the spray nozzle of the spray nozzle is based on a mechanism that converts parallel link motion into circular motion.In addition to the effect of claim 1,Twist and entanglement of piping such as air pipes and spray pipes can be prevented.
[0082]
  Claim 3Invention described inAccording toThe spraying machine is provided with a finishing device for finishing the surface of the sprayed surface after spraying the spray material, and the finishing device is provided with a trowel member movably, When spraying the spray material from the spray nozzle, it is retracted from the spray range, and when finishing the spray surface, it moves into the spray range and finishes the solder surface by smoothing the spray surface with the iron member. MadeBecause it is characterized byIn addition to the effect of claim 1 or 2, it is easy to make the spraying thickness constant, and it is possible to finish the spraying surface smoothly, and good spraying without causing the iron member to become an obstacle Can be performed.
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional view of a shield tunnel according to a first embodiment.
FIG. 2 is a circumferential sectional view of a shield tunnel according to the same embodiment.
3 is a cross-sectional view of the sprayer 8 according to the same embodiment, taken along line AA in FIG.
4 is a cross-sectional view of the sprayer 8 according to the same embodiment, taken along line BB in FIG. 3;
FIG. 5 is a tunnel control flow diagram in the tunnel according to the same embodiment;
FIG. 6 is a longitudinal sectional view of a shield tunnel according to a second embodiment.
FIG. 7 is a circumferential sectional view of the shield tunnel according to the embodiment.
8 is a cross-sectional view of the sprayer 100 according to the embodiment, taken along the line CC of FIG.
9 is a cross-sectional view taken along the line DD of FIG. 8 of the spray machine 100 according to the same embodiment. FIG.
FIG. 10 is a top view of an upper end portion of a sprayer 200 according to Embodiment 3.
11 is a cross-sectional view of the upper end portion of the sprayer 200 according to the embodiment, taken along the line EE of FIG.
[Explanation of symbols]
1 shield tunnel 2 segment
3 Spraying cart 4 Shear steel car
5 Steel 6 Rail
7 Running rail 8 Spraying machine
9 Spray nozzle 10 Pressure pump
11 Mixer 12 Material tank
13 Material tank 14 Material tank
15 hopper 16 air compressor
17 Pressure regulator 18 Material cart
19 Solenoid valve 20 Flow meter
21 Electromagnetic valve 22 Flow meter
23 Electromagnetic valve 24 Flow meter
25 Water pipe 26 Electromagnetic valve
27 Flow meter 28 Electric motor
29 Discharge port 30 Material hose
31 Pressure gauge 32 Flow meter
33 RI density moisture meter 34 Spray tube
35 Air tube 36 Air hose
37 Solenoid valve 38 Encoder
39 Control panel 40 Electric wire
41 Control room 42 Computer
43 display 44 rib
45 Fixed gear 46 Working gear
47 tires 48 frames
49 Electric motor 50 Drive gear
51 Support gear 52 Encoder
53 1st jack 54 Jack box
55 Fixed box 56 Stabilizer
57 Slide bar 58 Slide member
59 Displacement measuring instrument 60 Second jack
61 Spray thickness 62 Storage box
63 Ultrasonic displacement sensor 64 Lid
65 Rebound receiver 66 Displacement measuring instrument
67 Spraying distance 68 Finishing device
69 Electric motor 70 Iron
71 Spraying completion surface 100 Spraying machine
101 Conveyor 102 Worm
103 Rib 104 Fixed gear
105 Working gear 106 Tire
107 Frame 108 Electric motor
109 Drive gear 110 Support gear
111 Encoder 112 Electric motor
113 Drive gear 114 Warm box
115 Spray tube 116 Air tube
117 Spray nozzle 118 Encoder
200 sprayer 201 warm box
202 pedestal 203 support shaft
204 Worm foil 205 Support shaft
206 Crank 207 Spray tube
208 Air pipe 209 Fixing member
210 Ultrasonic displacement sensor 211 Storage box
212 Electric motor 213 Warm
214 Base frame 215 Rotation locus

Claims (3)

A tunnel spraying device that sprays a spray material on the inner wall surface of a tunnel,
A traveling carriage formed along the circumferential direction of the tunnel inside the inner wall surface of the tunnel and movable in the tunnel longitudinal direction, and mounted on the blowing carriage via the gear mechanism along the traveling railway A spraying machine that can run around the tunnel circumferential direction within a predetermined movement range, the spraying machine is provided with a spraying nozzle positioned perpendicular to the tunnel inner wall surface, which is a spraying surface,
The spray nozzle, a tunnel longitudinal direction at a predetermined width translatable der Rutotomoni is capable move forward and backward in a direction perpendicular to the tunnel wall, it is measured by the displacement measuring device for measuring the spray distance By moving the spray nozzle forward and backward based on the amount of displacement, the distance from the inner wall surface of the tunnel is kept constant,
The sprayer is provided with an encoder for measuring the position in the circumferential direction of the tunnel ,
A spraying device in a tunnel , wherein the spraying port of the spraying nozzle is capable of circular motion parallel to the inner wall surface of the tunnel. The in-tunnel spraying device according to claim 1, wherein the circular motion of the spray nozzle of the spray nozzle is based on a mechanism that converts parallel link motion into circular motion . The spraying machine is provided with a finishing device for finishing the surface of the sprayed surface after the spraying of the spray material, and the finishing device is provided with a trowel member movably, When the spray material is sprayed from the spray nozzle, it is retracted from the spray range, and when finishing the spray surface, it moves into the spray range and finishes the solder surface by smoothing the spray surface with the iron member. The in- tunnel spraying device according to claim 1 or 2, wherein

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