JP5697326B2 - Spray construction device and method in a tunnel - Google Patents

Description

  The present invention relates to a spray construction apparatus and a spray construction method in a tunnel.

  When constructing a mountain tunnel, the so-called NATM (New Austrian Tunnel Method) method is often used. In this NATM construction method, after building a steel H-shaped steel to be a support work, spraying is performed in which a material obtained by mixing a rapid setting material with a concrete material is sprayed.

  Here, as a device for building a support work, a support work for installing an arch-shaped tunnel support work by installing a pair of support works divided into arcs in the face so as to be connected to each other at the center. Is known (see, for example, Patent Document 1). In this support installation device, the support is built in the vicinity of the face of the tunnel while the support is held by the erector.

  Moreover, in performing the spraying construction in the NATM construction method, in recent years, large-scale spraying construction apparatuses are often used. Conventionally, a tunnel inner surface spraying device provided with a spraying device including a spraying nozzle is known as a large spraying construction device used in such spraying construction (see, for example, Patent Document 2). The position of the spray nozzle in the tunnel inner surface spray device is such that its position can be moved forward and backward, vertically and around the tunnel direction.

Japanese Patent Laid-Open No. 11-229796 JP-A-5-171897

  Moreover, there is also a spraying construction apparatus provided with both an erector in such a support installation apparatus and a spray nozzle in the spraying apparatus. By using such a spray construction device, it is possible to build a support work and spray a spray material in the tunnel, which can contribute to shortening the work period.

  However, in the tunnel inner surface spraying device described in Patent Document 2, spraying is performed with a single spray nozzle. For this reason, there is a problem that it takes a long time to complete the operation of spraying the spray material onto the wall surface of the tunnel. Therefore, there is a problem that it may become a cause of hindering the shortening of the construction period.

  Then, the subject of this invention is the spray construction apparatus in a tunnel and the spray construction method which can aim at shortening of the whole construction period by shortening the time required for the construction work of a support work and the spraying work of a spray material. Is to provide.

  A spray construction device in a tunnel according to the present invention that has solved the above problems is a spray construction device in a tunnel that performs spray construction to spray a spray material onto a construction surface in a tunnel, and is attached to the device body, A pair of erector booms capable of holding at least one of the spray rulers, and a pair of spray booms attached to the apparatus body and having a spray nozzle attached thereto, and one of the pair of spray booms The spray boom is capable of spraying spray material on the right side surface of the tunnel, and the other spray boom of the pair of spray booms is capable of spraying spray material on the left side surface of the tunnel. It is what.

  In the spray construction apparatus in a tunnel according to the present invention, spray material can be sprayed by a set of spray booms to which spray nozzles are attached. For this reason, since spraying material can be sprayed using a set of spray booms, efficient spraying work can be performed. In addition, one of the pair of spray booms can be sprayed with a spray material on the right side of the tunnel, and the other of the pair of spray booms is The spray material can be sprayed on the left side surface. In general, the cross section of a tunnel is often symmetrical. For this reason, a spraying operation can be performed more efficiently by performing the spraying operation on the right side surface and the left side surface with each boom. As a result, the entire construction period can be shortened by shortening the time required for the construction work of the support work and the spraying work of the spray material. Further, since one set of blowing booms is provided, when one of the blowing booms cannot be used due to a failure or the like, the entire blowing can be performed by using the other boom. Therefore, it is possible to prevent the construction from being interrupted due to the failure of the blowing boom.

  Here, the set of blowing booms may be arranged at positions below the set of erector booms.

  A spray nozzle is attached to the tip of the spray boom. A spray material supply hose for supplying spray material is connected to the spray nozzle. The spray material supply hose is provided in a state of hanging from the spray boom. For this reason, when the spray boom is driven, the spray material supply hose is swung together with the spray boom. At this time, if the erector boom is positioned below the spray boom, when the spray boom or erector boom is driven, the spray material supply hose comes into contact with the erector boom, and the drive of the spray boom or erector boom is performed. It becomes easy to become an obstacle. In this regard, a set of blowing booms is disposed at a position below each of the set of erector booms, so that the blowing material supply hose is prevented from contacting the erector booms even when the blowing booms are driven. Can do. As a result, the blowing boom and the erector boom can be driven smoothly, which can contribute to the improvement of workability.

  Further, the erector boom may be arranged on the side portion of the apparatus main body.

  As described above, since the erector boom is disposed on the side portion of the apparatus main body, the working range and the spraying range can be widened without excessively lengthening the erector boom.

  Furthermore, it can be set as the aspect by which the operation part is provided between the erector booms.

  As described above, the erector boom is disposed on the side portion of the apparatus main body, so that a wide area can be secured in the central portion of the apparatus main body. By arranging an operation unit for operating the erector boom at the center of the apparatus main body, an operation with a small number of people can be performed.

  Moreover, the erector boom travel which mounts an erector boom is provided and the erector boom travel can be set as the aspect which can be moved to the front-back direction relatively with respect to an apparatus main body.

  Since the one set of blowing booms is arranged at the lower position of the one set of erector booms, the erector boom can be arranged at the upper part of the apparatus main body. Here, by making the erector boom travel movable in the front-rear direction relative to the apparatus main body, the working range can be widened without excessively increasing the length of the erector boom.

  Moreover, it can be set as the aspect in which the interference prevention apparatus which prevents interference with an erector boom and a blowing boom is provided.

  If a pair of erector booms and spray booms are provided, there is a high possibility of interference when they move. Here, in the spray construction apparatus which concerns on this invention, the interference prevention apparatus which prevents interference with an elector boom and a spray boom is provided. For this reason, interference with an erector boom and a blowing boom can be prevented suitably.

  Moreover, an interference prevention apparatus can be set as the aspect provided with the limit switch attached to the spray boom.

  Thus, a limit switch can be suitably used as the sensor used in the interference prevention device.

  Furthermore, it can be set as the aspect by which the basket boom is arrange | positioned between a pair of spray booms.

  Thus, the thing provided with a pair of erector boom and spray boom can be used suitably also for the spray construction apparatus provided with the basket boom.

  Further, the basket boom can be configured to be movable in the vertical direction.

  Thus, since the basket boom is movable in the vertical direction, the basket boom can be moved to a lower position that does not interfere with the spraying work when the spraying work is performed.

  On the other hand, the method for spraying construction in a tunnel according to the present invention that solves the above-mentioned problems is a spraying method for a construction surface in a tunnel using a spraying construction device in a tunnel that performs spraying construction in which a spraying material is sprayed on the construction surface in the tunnel. In carrying out the construction, the spray construction device in the tunnel includes a pair of erector booms attached to the device main body and a pair of spray booms attached to the device main body. One spray boom can spray spray material onto the right side of the tunnel, and the other of the pair of spray booms can spray spray material against the left side of the tunnel It is said that the right side of the tunnel is sprayed by one blowing boom and at the same time the left side of the tunnel by the other blowing boom. And carrying out the spraying construction.

  In the spray construction method in a tunnel according to the present invention, the spray material is sprayed by a pair of spray booms to which the spray nozzles are attached. For this reason, since spraying material can be sprayed using a set of spray booms, efficient spraying work can be performed. Moreover, the right side surface of the tunnel is sprayed with one spray boom, and the left side surface of the tunnel is sprayed with the other spray boom. For this reason, a spraying operation can be performed more efficiently by performing the spraying operation on the right side surface and the left side surface with each boom. As a result, the entire construction period can be shortened by shortening the time required for the construction work of the support work and the spraying work of the spray material.

  Here, it can be set as the aspect which hold | maintains a support work with an erector boom, and performs the spraying construction by a pair of spray boom in the state which hold | maintained the support work.

  In this way, by holding the support work with the erector boom and performing the spray construction with a pair of spray booms while holding the support work, for example, the spray boom protrudes to the face side, and the center of gravity of the spray construction device is forward Even if it is a case where it moves to, the fall of a spray construction apparatus can be prevented suitably.

  The spray device in the tunnel includes a basket boom that is disposed between a pair of spray booms and is movable in the vertical direction. The basket boom is moved to a lower position, and the basket boom is moved to a lower position. It can be set as the aspect which performs the spraying construction by a set of spray booms in the state moved to.

  Thus, by performing spraying construction in a state where the basket boom is moved to the lower position, it is possible to perform spraying construction in a state where the basket boom is moved to a position that does not interfere with the spraying work.

  According to the spray construction device and the spray construction method in a tunnel according to the present invention, the entire construction period can be shortened by shortening the time required for the construction work of the support work and the spray work of the spray material. .

It is a figure which shows the spray construction apparatus which concerns on 1st Embodiment, (a) is a side view, (b) is a top view, (c) is a front view. It is a side view which shows the movable range of a spray boom. It is a top view which shows the movable range of a spray boom. It is a front view which shows the movable range of a spray boom. It is a front view which shows the movable range of an erector boom and a basket boom. It is a perspective view of a limit switch. It is a block diagram of a quick-setting agent cart. It is a whole side view which shows the state which performs the spray construction by a spray construction apparatus. It is a whole top view which shows the state which performs the spray construction by a spray construction apparatus. It is a whole front view which shows the state which performs the spray construction by a spray construction apparatus. It is a figure which shows the spray construction apparatus which concerns on 2nd Embodiment, (a) is a side view, (b) is a top view. It is a figure which shows the spray construction apparatus which concerns on 3rd Embodiment, (a) is a side view, (b) is a top view.

  Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings. In each embodiment, portions having the same function are denoted by the same reference numerals, and redundant description may be omitted.

  Drawing 1 is a figure showing the spray construction apparatus of a tunnel concerning a 1st embodiment, (a) is a side view, (b) is a top view, and (c) is a front view. As shown in FIG. 1, the spray construction apparatus M1 which concerns on 1st Embodiment is equipped with the trolley | bogie 1 which is an apparatus main body. Further, a pair of blowing booms 2A and 2B are attached to both sides of the front position of the carriage 1, and a set of erector booms 3A and 3B are attached to the outer positions thereof. Furthermore, the basket boom 4 is attached to the front center position of the carriage 1 between the blowing booms 2A and 2B.

  The cart 1 includes a vehicle body 10, and wheels 11 are attached to the vehicle body 10. The vehicle body 10 of the carriage 1 can be self-propelled by the wheels 11. Further, the vehicle body 10 is provided with concrete pumps 12A and 12B for supplying concrete to the spray booms 2A and 2B and hoppers 13A and 13B into which concrete as a spray material is charged. The concrete pumps 12A and 13B are mounted on a hydraulic lifting device using a hydraulic jack.

  The spray booms 2A and 2B include spray boom main bodies 21A and 21B, and articulated arms 22A and 22B are attached to the tips of the spray boom main bodies 21A and 21B. In addition, spray nozzles 23A and 23B are attached to the tips of the articulated arms 22A and 22B. The spray boom main bodies 21A and 21B can be expanded and contracted, and can be moved in the front-rear, up-down, left-right directions.

  The multi-joint arms 22A and 22B are swingably attached to the spray boom bodies 21A and 21B and have a large number of joints. For this reason, the multi-joint arms 22A and 22B can be directed in various directions. By these spray boom main bodies 21A, 21B and articulated arms 22A, 22B, the spray nozzles 23A, 23B attached to the articulated arms 22A, 22B are movable in front, rear, left, right, up and down directions with respect to the vehicle body 10. ing.

  The spray nozzles 23A and 23B are connected to the concrete pumps 12A and 12B via a pressure feed line. By operating the concrete pumps 12A and 12B, the concrete introduced into the hoppers 13A and 13B is supplied to the spray nozzles 23A and 23B. Supplied. The supplied concrete is sprayed from the spray nozzles 23A and 23B. Further, the spray direction and spray position by the spray nozzles 23A and 23B can be adjusted in various directions by the spray boom main bodies 21A and 21B and the articulated arms 22A and 22B.

  Specifically, by adjusting the blowing boom main bodies 21A and 21B, as shown in FIG. 2, as shown in FIG. 3, the position is far from the position closer to the carriage 1 (front-rear direction), from the upper side to the lower side, and further as shown in FIG. It can be moved to various positions on the left and right. Further, by adjusting the articulated arms 22A and 22B, the spray angle by the spray nozzles 23A and 23B can be adjusted.

  Furthermore, as shown in FIG. 4, the maximum sprayable range XR of the right spray boom 2 </ b> A covers the entire right side of the range assumed to be the tunnel T. Similarly, the maximum sprayable range XL of the left blowing boom 2B covers the entire left side of the range assumed to be the tunnel T. Thus, the right spray boom 2A and the left spray boom 2B allow the concrete to be sprayed over the entire range assumed to be a tunnel.

  Further, the maximum sprayable range XR of the right blowing boom 2A and the maximum sprayable range XL of the left blowing boom 2B wrap the tunnel T at the center position of the assumed range. Further, when the articulated arms 22A and 22B are adjusted to the horizontal angle, the sprayable ranges Xl and Xr are narrower than the maximum sprayable ranges XR and XL.

  The erector booms 3A and 3B include erector boom main bodies 31A and 31B. The ejector boom main bodies 31A and 31B are extendable and retractable in the same manner as the blowing boom main bodies 21A and 21B, and are movable in the front-rear, up-down, left-right directions. Further, holding arms 32A and 32B are swingably attached to the distal end portions of the erector boom main bodies 31A and 31B.

  In addition, gripping members 33A and 33B for gripping the support work are attached to the tips of the holding arms 32A and 32B. The grip members 33A and 33B attached to the holding arms 32A and 32B are movable in the front, rear, left, right, and up and down directions with respect to the vehicle body 10 by the erector boom main bodies 31A and 31B and the holding arms 32A and 32B. .

  The basket boom 4 includes a basket boom main body 41. The basket boom main body 41 can be expanded and contracted similarly to the spray boom main bodies 21A and 21B, and can be moved in the front-rear, up-down, left-right directions. Further, a basket holding arm 42 is swingably attached to the tip of the basket boom body 41.

  The basket holding arm 42 is attached with a basket 43 on which an operator or the like can ride. With the basket boom body 41 and the basket holding arm 42, the basket 43 attached to the basket holding arm 42 is movable in the front, rear, left, right, and up and down directions with respect to the vehicle body 10.

  FIG. 5 shows a gripping member swingable range Y that is a swingable range of the gripping members 33A and 33B that can be moved by the elector boom bodies 31A and 31B and the holding arms 32A and 32B. A basket movable range Z in which the basket 43 that can be moved by the basket boom main body 41 and the basket holding arm 42 is movable is shown. As shown in FIG. 5, the gripping member swingable range Y and the basket movable range Z are substantially the same range. Therefore, in the basket boom 4, the range that can reach the entire surface of the tunnel with only one basket boom 4 can be set as the basket movable range Z.

  Furthermore, the limit switch 5 shown in FIG. 6 is attached to the spray boom main bodies 21A and 21B in the spray booms 2A and 2B. The limit switch 5 includes a loop striker 51 that protrudes toward the elector booms 3 </ b> A and 3 </ b> B, and a switch body 52 that is connected to the loop striker 51. When a foreign object, for example, the elector booms 3A and 3B comes into contact with the loop striker 51 and detects the pressing force, the switch body 52 is activated.

  The limit switch 5 is connected to a control device (not shown), and the control device is also connected to an alarm device and an operation stop device (not shown). The limit switch 5 transmits an interference signal to the control device when the switch body 52 is operated. In the control device, when the interference signal is received, an alarm is output from the alarm device, or the operation of the spray booms 2A, 2B and the elector booms 3A, 3B is regulated by the operation stop device. Thus, by restricting the operation of the blowing booms 2A and 2B and the elector booms 3A and 3B, interference between the blowing booms 2A and 2B and the elector booms 3A and 3B is prevented.

  Furthermore, when performing spray construction in the spray construction apparatus M1, the quick-setting agent cart | truck 6 which shows the structure is adjoining to FIG. 7 which supplies a rapid setting agent with respect to the spray construction apparatus M1. As shown in FIG. 7, the quick setting agent cart 6 includes a water tank 61, a liquid quick setting agent tank 62, and a powder quick setting agent supply device 63. The water tank 61 and the liquid quick-setting agent tank 62 are connected to the slurry nozzle 65 via a liquid pumping line 64A. Further, the powder quick-setting agent supply device 63 is connected to the slurrying nozzle 65 via a powder pressure feed line 64B. A liquid pumping pump 66 is provided in the liquid pumping line 64A.

  Water is stored in the water tank 61, and a liquid quick-setting agent is stored in the liquid quick-setting agent tank 62. By operating the liquid pressure pump 66, the water stored in the water tank 61 and the liquid quick-setting agent stored in the liquid quick-setting agent tank 62 are supplied to the slurrying nozzle 65.

  Further, the powder quick setting agent supply device 63 stores the powder quick setting agent. An air compressor 67 is connected to the powder quick-setting agent supply device 63, and an air dryer 68 is interposed between the powder quick-setting agent supply device 63 and the air compressor 67. By operating the air compressor 67, compressed air is supplied from the air dryer 68, and the powder quick setting agent is supplied to the slurrying nozzle 65 by the compressed air.

  The slurry nozzle 65 is connected to the spray nozzles 23A and 23B in the spray construction apparatus M1. In the slurry nozzle, the supplied water or liquid quick setting agent and the powder quick setting agent are made into a slurry and supplied to the spray nozzles 23A and 23B. Further, an auxiliary air line 69 is provided between the air compressor 67 and the liquid pressure feed line 64 </ b> A, and the air compressor 67 can assist in the shortage of the pressure feed force by the liquid pressure feed pump 66. Further, the quick setting agent cart 6 is provided with a quick setting agent control panel 70. By operating the quick setting agent control panel 70, it is possible to adjust the supply amount of the quick setting agent and to start and end the supply.

  Next, the spray construction method using the spray construction apparatus according to the present embodiment will be described. The spray construction according to the present embodiment is started after the spray construction apparatus M1 is moved to the vicinity of the face after excavation of the face of the tunnel proceeds. When the spray construction apparatus M1 is moved to the vicinity of the face, as shown in FIGS. 8 to 10, the quick-binding agent cart 6 is moved to the side of the spray construction apparatus M1 and stopped, and then the mixer trucks 7A and 7B are moved. It moves to the wellhead side in spray construction apparatus M1, and stops.

  When the movement of the quick setting cart 6 is completed, the slurry nozzle 65 and the spray nozzles 23A and 23B in the quick setting cart 6 are connected. On the other hand, when the movement of the mixer trucks 7A and 7B is completed, the supply of concrete from the mixer trucks 7A and 7B to the hoppers 13A and 13B is started. In addition, it can also be set as the aspect which supplies concrete from one mixer truck with respect to hopper 13A, 13B. By supplying concrete with one mixer truck, the concrete can be efficiently supplied to the hoppers 13A and 13B, and only one mixer truck can be carried into the tunnel. When supplying concrete to the two hoppers 13A and 13B with a single mixer truck, a concrete diverter can be suitably used.

  During the connection between the slurry nozzle 65 and the spray nozzles 23A and 23B and the introduction of concrete, the spray construction apparatus M1 builds the support S near the face of the tunnel T by the elector booms 3A and 3B. The support S is made of an H-shaped steel that forms a quarter circle, and a substantially semi-circle is formed by arranging two support works. One of the support works S is built with the right erector boom 3A, and the other is built with the left erector boom 3B.

  After the support work S has been installed, the basket 43 in the basket boom 4 is lowered and moved to a position that does not interfere with the spraying operation. Thereafter, concrete is supplied to the spray nozzles 23A and 23B by operating the concrete pumps 12A and 12B. Further, by operating the liquid pump 66 and the air compressor 67, the rapid setting material is supplied from the slurry nozzle 65 to the spray nozzles 23A and 23B. Thus, the concrete and the quick setting material are ejected from the spray nozzles 23 </ b> A and 23 </ b> B to perform the concrete spraying operation on the wall surface of the tunnel. At this time, the support boom S is held in the elector booms 3A and 3B.

  Also, depending on the tunnel, there may be a case where the spraying work is performed without installing a support work. In this case, an arc-shaped spray ruler is installed on the inner wall of the tunnel for spraying. By using this spraying ruler, the spraying thickness when performing the spraying operation can be adjusted to a desired thickness. As a spraying ruler, for example, a steel pipe for gas pipe of φ76 mm can be used.

  The spray ruler is formed by two semicircular arc-shaped rulers. Two half-spraying rulers are built on the inner wall of the tunnel by the erector booms 3A and 3B, respectively, and the two half-spraying rulers are joined at the upper end of the inner wall of the tunnel. Moreover, the spray ruler is fixed to the inner wall of the tunnel after being built on the inner wall of the tunnel by the erector boom. After the spray ruler is fixed to the inner wall of the tunnel, the holding of the spray ruler by the elector booms 3A and 3B is released.

  When the concrete spraying operation is performed, the slurry rapid setting agent is supplied to the spray nozzles 23A and 23B through the slurrying nozzle 65 by operating the liquid pressure feed pump 66 and the air compressor 67 in the quick setting agent cart 6. To do. Furthermore, concrete is supplied to the spray nozzles 23A and 23B by operating the concrete pumps 12A and 12B. Then, the concrete mixed with the slurry-like setting agent is ejected from the spray nozzles 23A and 23B and sprayed onto the wall surface of the tunnel.

  Here, when spraying concrete, concrete is sprayed from the right spray nozzle 23 </ b> A provided on the right spray boom 2 </ b> A to the right side surface of the tunnel T. Moreover, concrete is sprayed from the left spray nozzle 23B provided in the left spray boom 2B to the left side surface of the tunnel T. Since the cross section of the tunnel T is symmetrical, the spraying operation can be efficiently performed by performing the spraying operation on the right side surface and the left side surface by the right spray nozzle 23A and the left spray nozzle 23B.

  The spraying thickness when performing the spraying work is measured based on the support work or the spraying ruler. Further, when performing the spraying work while holding the support work, remote spraying for operating the spraying booms 2A, 3A, etc. by remote control may be performed from a position away from the elector booms 3A, 3B. By performing remote spraying, safety can be improved.

  Further, while the spraying work is being performed, the spraying booms 2A and 2B are frequently moved up and down, front and rear, and left and right as the spraying work proceeds. At this time, since the blowing booms 2A, 2B are frequently moved up, down, front, back, left, and right, it is conceivable that the blowing booms 2A, 2B interfere with the elector booms 3A, 3B. If the blowing booms 2A and 2B interfere with the erector booms 3A and 3B, there is a possibility that the blowing work may be hindered or the apparatus may be damaged.

  Here, the limit boom 5 shown in FIG. 6 is provided in the blowing booms 2A and 2B. If the blowing booms 2A and 2B are too close to the erector booms 3A and 3B while the blasting booms 2A and 2B are being moved, the loop striker 51 in the limit switch 5 contacts the erector booms 3A and 3B. Then, an interference signal is transmitted from the switch body 52 to the control device. The control device receives the interference signal, outputs an alarm, and further operates the operation stop device to stop the operation of the blowing booms 2A and 2B. Thus, interference between the blowing booms 2A and 2B and the elector booms 3A and 3B is prevented.

  Further, while the spraying work by the spray booms 2A and 2B is being performed, the basket 43 is moved to a position lower than the position when the basket boom body 41 is horizontal, and the spraying work by the spray booms 2A and 2B is obstructed. It is made not to become. For this reason, the spraying work by the spray booms 2A and 2B can be performed smoothly.

  In this way, after the spraying work is completed, the quick setting cart 6 and the mixer trucks 7A and 7B are moved to the wellhead side, and the spray construction apparatus M1 is also moved to the wellhead side. Thereafter, the face is excavated, and thereafter the steps of excavation and spraying are repeated sequentially. In this way, the construction of the tunnel is completed.

  Thus, in the tunnel spray construction apparatus and spray construction method according to the present embodiment, the spray material can be sprayed by the pair of spray booms 2A and 2B. Efficient spraying work can be performed. Moreover, the right blowing boom 2A performs spraying construction on the right side surface in the tunnel, and the left blowing boom 2B performs spraying construction on the left side surface in the tunnel. For this reason, since the spraying operation can be performed respectively on the right side surface and the left side surface of the tunnel having a symmetric cross section, the spraying operation can be performed more efficiently. As a result, the entire construction period can be shortened by shortening the time required for the construction work of the support work and the spraying work of the spray material.

  A limit switch 5 is attached to the blowing booms 2A and 2B. For this reason, interference with blowing boom 2A, 2B and elector boom 3A, 3B can be prevented suitably. Further, the spray construction apparatus M1 is provided with a basket boom 4, and when performing the spray construction, the basket 43 attached to the basket boom 4 is lowered and retracted. For this reason, it is possible to prevent the basket 43 from getting in the way when spraying is performed.

  Furthermore, when providing the support work S, when performing the spray construction by the spray booms 2A and 2B, the support work S is held by the elector booms 3A and 3B. For this reason, for example, even if it is a case where the spray booms 2A and 2B protrude to the face side from the carriage 1 and the center of gravity moves forward, the spray construction apparatus M1 can be suitably prevented from falling.

  Next, a second embodiment of the present invention will be described. FIG. 11 is a view showing a tunnel spray construction apparatus according to the second embodiment, in which (a) is a side view and (b) is a plan view.

  As shown in FIGS. 11A and 11B, the tunnel spray construction apparatus M2 according to the present embodiment includes a carriage 8 that is an apparatus main body, as in the first embodiment. A pair of blowing booms 82 </ b> A and 82 </ b> B are attached to both side positions on the front surface of the carriage 8. The spray booms 82 </ b> A and 82 </ b> B are attached so as to be swingable with respect to the cart 8 via a bracket fixed to the tip of the cart 8. The spray booms 82A and 82B are configured in the same manner as the spray booms 2A and 2B in the first embodiment, and include spray boom bodies 21A and 21B, articulated arms 22A and 22B, and spray nozzles 23A and 23B. . Further, a spray material supply hose 64 is connected to the spray nozzles 23A and 23B. The spray material supply hose 64 is a member constituting the liquid pressure feed line 64A shown in FIG. The spray material supply hose 64 is provided in a state of hanging from the spray boom main bodies 21A and 21B.

  A set of erector booms 83A and 83B is attached to the outer side of the position where the set of blowing booms 82A and 82B is attached. The pair of erector booms 83 </ b> A and 83 </ b> B is attached so as to be swingable with respect to the carriage 8 via a bracket fixed to the tip of the carriage 8. Electa boom 83A, 83B is provided with electra boom main bodies 31A, 31B, holding arms 32A, 32B, and gripping members 33A, 33B, as in the first embodiment.

  Moreover, as shown in FIG.11 (b), all the blowing booms 82A and 82B are arrange | positioned in the downward position of the ejector booms 83A and 83B. More specifically, the right erector boom 83A is disposed at the upper right position of the right blowing boom 82A, and the left erector boom 83B is disposed at the upper left position of the left blowing boom 82B.

  Furthermore, a set of basket booms 84A and 84B is provided above the set of erector booms 83A and 83B. More specifically, the right basket boom 84A is disposed at a position directly above the right erector boom 83A, and the left basket boom 84B is disposed at a position immediately above the left erector boom 83B. Similar to the first embodiment, the basket booms 84A and 84B include basket boom main bodies 41A and 41B, basket holding arms 42A and 42B, and baskets 43A and 43B, respectively.

  A traveling driver's seat 85 and a work table 86 are disposed between the basket booms 84 </ b> A and 84 </ b> B at a substantially central position in the front-rear direction of the carriage 8. The traveling driver's seat 85 is provided with an accelerator pedal, a brake pedal, a handle or the like for causing the carriage 8 to travel. Further, a work table 86 is provided at a position in front of the traveling driver's seat 85. The work platform 86 is provided with levers and the like for operating the blowing booms 82A and 82B, the erector booms 83A and 83B, and the basket booms 84A and 84B. The tunnel spray construction apparatus M2 according to the present embodiment has the same configuration as that of the first embodiment except for these points.

  The tunnel spraying construction apparatus M2 according to the present embodiment having the above-described configuration can perform an efficient spraying work in the same manner as the spraying construction apparatus M1 according to the first embodiment. As a result, the entire construction period can be shortened by shortening the time required for the construction work of the support work and the spraying work of the spray material.

  Moreover, in the tunnel spray construction apparatus M2 according to the present embodiment, the spray material supply hose 64 is connected to the spray nozzles 23A and 23B provided in the spray booms 82A and 82B, and the spray material supply hose 64 is the spray boom main body 21A. , 21B. For this reason, for example, if there are the erector booms 83A and 83B below the blowing booms 82A and 82B, when the blowing booms 82A and 82B and the erector booms 83A and 83B are driven, the blowing material supply hose 64 drives them. It becomes easy to become an obstacle.

  In this regard, in the tunnel spray construction apparatus M2 according to the present embodiment, the spray booms 82A and 82B are arranged below the elector booms 83A and 83B. For this reason, when the spray booms 82A and 82B and the elector booms 83A and 83B are driven, the spray material supply hose 64 provided in a state where the spray booms 82A and 82B and the elector booms 83A and 83B are suspended from the spray boom main bodies 21A and 21B. Can be avoided. As a result, the blowing booms 82A and 82B and the elector booms 83A and 83B can be driven smoothly, which can contribute to improvement in workability.

  Further, main work using the basket booms 84A and 84B includes support assembly bolts / nuts attachment, tielot attachment, and wire mesh attachment at the time of support assembly. In this respect, in the tunnel spray construction apparatus M2 according to the present embodiment, two basket booms 84A and 84B are attached. For this reason, compared with the tunnel spraying construction apparatus M1 according to the first embodiment, when performing these operations, the work can be performed by other workers, so that the workability is further improved. It can be.

  Next, a third embodiment of the present invention will be described. FIG. 12 is a view showing a tunnel spray construction apparatus according to the third embodiment, in which (a) is a side view and (b) is a plan view.

  As shown in FIGS. 12A and 12B, the tunnel spray construction apparatus M3 according to the present embodiment includes a carriage 9 that is an apparatus main body, as in the first embodiment. A pair of blowing booms 92 </ b> A and 92 </ b> B are attached to the positions of both end portions on the front surface of the carriage 9. The spray booms 92 </ b> A and 92 </ b> B are attached so as to be swingable with respect to the cart 9 via a bracket fixed to the tip of the cart 9. The spray booms 92A and 92B are configured similarly to the spray booms 2A and 2B in the first embodiment, and include the spray boom bodies 21A and 21B, the articulated arms 22A and 22B, and the spray nozzles 23A and 23B. . Further, a spray material supply hose 64 is connected to the spray nozzles 23A and 23B. The spray material supply hose 64 is provided in a state of hanging from the spray boom main bodies 21A and 21B, as in the second embodiment.

  Moreover, as shown in FIG.12 (b), a set of erector booms 93A and 93B is attached to the upper position of the position where the set of blowing booms 92A and 92B is attached. The pair of erector booms 93A and 93B are disposed at positions directly above the pair of blowing booms 92A and 92B, respectively. More specifically, the right erector boom 93A is arranged right above the right blowing boom 92A, and the left erector boom 93B is arranged right above the left blowing boom 92B. Electa boom 93A, 93B is provided with elector boom main bodies 31A, 31B, holding arms 32A, 32B, and gripping members 33A, 33B, as in the first embodiment.

  Further, the elector booms 93A and 93B are provided on the elector boom travels 95A and 95B, respectively. Electa boom travel 95A, 95B includes a slide carriage and a rail on which the slide carriage travels. The erector booms 93A and 93B are swingably attached to the sliding carriages of the erector boom travels 95A and 95B, respectively. In addition, the rails in the erector boom travels 95 </ b> A and 95 </ b> B are both laid on the upper surface of the carriage 9, and extend in the front-rear direction of the carriage 9.

  Further, a basket boom 94 is provided at a position above the pair of blowing booms 92A and 92B on the front surface of the carriage 9. The basket boom 94 is attached so as to be swingable with respect to the cart 9 via a bracket fixed to the tip of the cart 9. The basket boom 94 includes a basket boom body 41, a basket holding arm 42, and a basket 43, respectively, as in the first embodiment.

  In addition, a traveling driver's seat 96 and a work table 97 are disposed between the erector booms 93A and 93B at the substantially center position in the front-rear direction of the carriage 8. The traveling driver's seat 96 is provided with an accelerator pedal, a brake pedal, a handle or the like for traveling the carriage 9. Further, a work table 97 is provided in front of the traveling driver's seat 96. The workbench 97 is provided with levers for operating the blowing booms 92A and 92B, the erector booms 93A and 93B, and the basket boom 94.

  Furthermore, concrete pumps 12A and 12B similar to the spray construction apparatus M1 according to the first embodiment are provided at the rear position of the carriage 9. Concrete pumps 12A and 12B are mounted on lifting devices 98A and 98B. The elevating devices 98A and 98B are link type elevating devices including a pedestal and an elevating link mechanism. The concrete pumps 12A and 12B are respectively placed on pedestals in the lifting devices 98A and 98B. Further, the pedestal in the lifting devices 98A and 98B can be lifted and lowered by operating the lifting link mechanism. The tunnel spray construction apparatus M3 according to the present embodiment has the same configuration as that of the first embodiment with respect to configurations other than these points.

  The tunnel spraying construction apparatus M3 according to the present embodiment having the above-described configuration can perform an efficient spraying operation in the same manner as the spraying construction apparatus M1 according to the first embodiment. As a result, the entire construction period can be shortened by shortening the time required for the construction work of the support work and the spraying work of the spray material.

  Moreover, in the tunnel spraying construction apparatus M3 according to the present embodiment, the spraying booms 92A and 92B are disposed below the elector booms 93A and 93B, similarly to the spraying construction apparatus M2 according to the second embodiment. For this reason, when the spray booms 92A and 92B and the elector booms 93A and 93B are driven, the spray booms 92A and 92B and the elector booms 93A and 93B can be prevented from coming into contact with the spray material supply hose 64. As a result, the blowing booms 92A and 92B and the elector booms 93A and 93B can be driven smoothly, which can contribute to improvement in workability.

  Furthermore, in the tunnel spray construction apparatus M3 according to the present embodiment, the erector booms 93A and 93B are mounted on the erector boom travels 95A and 95B. The erector booms 93A and 93B can be moved in the front-rear direction relative to the carriage 9 by the erector boom travels 95A and 95B. For this reason, the working range can be widened without excessively increasing the length of the elector booms 93A and 93B.

  The preferred embodiment of the present invention has been described above, but the present invention is not limited to the above embodiment. For example, in the above embodiment, the two blowing booms 2A and 2B and the elector booms 3A and 3B are used as the pair of blowing booms and the erector boom, respectively. it can. Further, although only one basket boom 4 is provided, a mode in which a plurality of basket booms are provided may be employed. Furthermore, in the said embodiment, although the two hoppers 13A and 13B are provided, it is also possible to use only one hopper.

  Moreover, although the limit switch shown in 1st Embodiment is not provided in the spray boom in 2nd Embodiment and 3rd Embodiment, it can also be set as the aspect which provides these. In the first and second embodiments, the hydraulic lifting device is used as the lifting device on which the concrete pump is mounted. However, the link lifting device used in the third embodiment can also be used. . Further, a hydraulic lifting device can be used as a lifting device on which the concrete pump according to the third embodiment is mounted. Furthermore, although the traveling driver's seat and the work table are disposed in the central portion in the width direction in the carts in the second and third embodiments, it may be disposed in other positions. it can.

M1 to M3 ... spraying construction apparatus 1, 8, 9 ... cart 10 ... car body 11 ... wheels 12A, 12B ... concrete pumps 13A, 13B ... hoppers 2A, 2B, 82A, 82B, 92A, 92B ... spraying booms 21A, 21B ... spraying Boom bodies 22A, 22B ... articulated arms 23A, 23B ... spray nozzles 3A, 3B, 83A, 83B, 93A, 93B ... Elector booms 31A, 31B ... Elector boom bodies 32A, 32B ... holding arms 33A, 33B ... gripping members 4, 84A, 84B, 94 ... basket boom 41 ... basket boom main body 42 ... basket holding arm 43 ... basket 5 ... limit switch 51 ... loop type striker 52 ... switch main body 6 ... quick setting cart 61 ... water tank 62 ... liquid quick setting agent Tank 63 ... Powder quick setting agent supply device 64 ... Spray material supply hose 4A ... Liquid pressure feed line 64B ... Powder pressure feed line 65 ... Slurry nozzle 66 ... Liquid pressure feed pump 67 ... Air compressor 68 ... Air dryer 69 ... Auxiliary air line 70 ... Quick setting agent control panel 7A, 7B ... Mixer car 85 ... Driving operation Seat 86 ... Workbench 95A, 95B ... Electa boom travel 96 ... Workbench 96A, 96B ... Elevating device S ... Blowing ruler T ... Tunnel Xl, Xr ... Blowable range XR, XL ... Maximum blown range Y ... Gripping member swing Possible range Z ... Possible range of basket movement

Claims (6)

A spraying construction device in a tunnel that performs spraying construction in which a spraying material is sprayed onto a construction surface in a tunnel,
Attached to an apparatus main body is carriage, a set of erector boom shoring is capable of holding,
A set of blowing booms attached to the apparatus body and attached with a blowing nozzle;
A basket boom with a basket attached thereto;
With
The set of erector booms and the set of blowing booms are arranged on the side of the apparatus main body,
The basket boom is attached to the front center portion of the apparatus main body between the pair of spray booms,
The set of erector booms is arranged at a position outside the set of blowing booms or at a position directly above the set of blowing booms,
One erector boom of the set of erector booms holds a support built in the right side surface of the tunnel, and the other erector boom of the set of erector booms is the tunnel. While holding a support built in the left side of the one of the pair of blowing booms, one of the pair of blowing booms can spray the blowing material against the right side of the tunnel A spraying construction apparatus in a tunnel, wherein the other spraying boom of the set of spraying booms is capable of spraying the spraying material against a left side surface of the tunnel.   The spray construction apparatus in a tunnel according to claim 1, wherein when performing spraying construction, the basket attached to the basket boom can be lowered and retracted. A spraying construction device in a tunnel that performs spraying construction in which a spraying material is sprayed onto a construction surface in a tunnel,
Attached to an apparatus main body is carriage, a set of erector boom shoring is capable of holding,
A set of blowing booms attached to the apparatus body and attached with a blowing nozzle;
With
The set of erector booms is arranged at a position outside the set of blowing booms or at a position directly above the set of blowing booms,
One erector boom of the set of erector booms holds a support built in the right side surface of the tunnel, and the other erector boom of the set of erector booms is the tunnel. While holding a support built in the left side of the one of the pair of blowing booms, one of the pair of blowing booms can spray the blowing material against the right side of the tunnel A spraying construction apparatus in a tunnel, wherein the other spraying boom of the set of spraying booms is capable of spraying the spraying material against a left side surface of the tunnel. The spray construction apparatus in a tunnel according to claim 3 , wherein when spraying construction is performed, a quick setting agent is supplied from the quick setting agent cart to the spray construction apparatus. Using the spray construction device in the tunnel that performs the spray construction to spray the spray material on the construction surface in the tunnel, in performing the spray construction on the construction surface in the tunnel,
The spray construction equipment in the tunnel is
A set of erector booms attached to the device body which is a carriage ;
A set of spray booms attached to the device body;
With
The set of erector booms is arranged at a position outside the set of blowing booms or at a position directly above the set of blowing booms,
One erector boom of the set of erector booms holds a support built in the right side surface of the tunnel, and the other erector boom of the set of erector booms is the tunnel. While holding the support built in the left side of the tunnel, the right side of the tunnel is sprayed by the one blowing boom and the left side of the tunnel is sprayed by the other blowing boom. A spraying construction method in a tunnel characterized by performing. The spraying device in the tunnel is
A basket boom disposed between a pair of spray booms and movable in the vertical direction;
Moving the basket boom downward;
The spray construction method in a tunnel according to claim 5 , wherein the spray construction is performed by the pair of spray booms in a state where the basket boom is moved downward.

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