JP6653510B1 - Guide rails used in the pneumatic caisson method and methods of attaching and detaching mechanical equipment to and from the guide rails - Google Patents

Abstract

Provided are a guide rail capable of reducing a work load of an operator in a caisson work room, and a method of attaching and detaching mechanical equipment to and from the guide rail. A right widening section is provided on a right guide rail 3a, and a left widening section is provided on a left guide rail 3b, and a running roller 41a of the excavator 4 is supported by the lower right steel 3a3 and the lower left steel 3b3 in each widening section. In this state, the right widening section and the left widening section are each driven to widen in the width direction of the guide rail by the widening drive mechanism, so that the mechanical equipment such as the excavator 4 suspended on the guide rail can be removed. Constitute. [Selection diagram] FIG.

Description

  The present invention relates to a guide rail used in a caisson working room of a pneumatic caisson method, and a method for attaching and detaching mechanical equipment to and from the guide rail.

  2. Description of the Related Art Conventionally, in construction work using a pneumatic caisson method, an excavator such as a power shovel is carried into a caisson working room in a high-pressure environment, and excavation is performed on the ground in the caisson working room using the excavator. Here, the ground of the caisson work room contains a large amount of groundwater and the like, and it is difficult to work with crawler tracks (for example, caterpillars). For this reason, a guide rail is laid on the ceiling of the caisson work room, an excavator is suspended from the guide rail, and mechanical equipment such as an excavator is suspended from the guide rail so as not to be affected by the ground. Work such as excavating the ground.

  The work of attaching or removing the mechanical equipment to or from the guide rail may be performed manually by a worker entering the caisson work room and widening the guide rail within the possible stay time in a high-pressure environment. is there. The machine is transported in the caisson work room by a transfer device, and the machine is suspended by a lifting device such as a crane disposed on the ground via a shaft that connects the caisson work room and the ground. Equipment is carried in or taken out of the caisson work room (Patent Document 1 or Patent Document 2).

JP-A-2004-353394 JP-A-2006-075026

  However, work in a high-pressure environment in a caisson work room is limited in the time available for workers to stay. Therefore, from the viewpoint of shortening the construction period and reducing labor costs, in the work of transporting machinery and equipment, etc. There is still room for improvement in this point, as the work time below must be minimized.

  When carrying out the machine equipment from the caisson work room, it is conceivable to disassemble or deform the machine equipment in the caisson work room and carry it out through the shaft. However, there is still room for improvement in this respect from the viewpoint of shortening the construction period and reducing labor costs. Also, if mechanical equipment is disassembled or deformed, dedicated mechanical equipment that is easily disassembled or easily deformed must be developed in order to improve work efficiency, and the development cost of mechanical equipment increases. There is still room for improvement.

  The present invention has been made in view of the above-described circumstances, and provides a guide rail capable of reducing a work load of an operator in a caisson work room, and a method of attaching and detaching mechanical equipment to and from the guide rail. Aim.

  In order to achieve this object, the guide rail according to claim 1 is a guide rail provided on a ceiling portion in a caisson work room, wherein a mounting portion is mounted on the ceiling portion, and a support extending from the mounting portion. The part is configured to be able to support mechanical equipment used in the caisson work room. Further, at least a deformable portion provided at a predetermined portion of the support portion is configured to be deformable into a supportable state in which mechanical equipment can be supported and a supportable state in which mechanical equipment cannot be supported. The deformable portion is configured to be drivable in a supportable state or an unsupportable state by the deformation driving unit.

  According to a second aspect of the present invention, there is provided the guide rail according to the first aspect, wherein a first rail portion is provided on a ceiling portion, and a second rail portion is provided on the ceiling portion in pair with the first rail portion. Then, the widening driving means provided in the deformation driving means drives the deforming portion in a direction in which the width of the first rail portion and the second rail portion is widened in the predetermined portion, and is changed from the supportable state to the unsupportable state. You.

  According to a third aspect of the present invention, in the guide rail according to the second aspect, a first deformable portion which is a deformable portion is provided on the first rail portion, and a second deformable portion which is also a deformable portion is provided on the second rail portion. Provided. And the 1st deformation part and the 2nd deformation part are driven simultaneously by the simultaneous drive means provided in the deformation drive means.

  According to a fourth aspect of the present invention, in the guide rail according to the second or third aspect, the contact portion is provided to be in contact with the deformed portion, and the first drive is performed by the reduction driving means provided in the deformation drive means. The deformable portion is driven in a direction in which the width between the rail portion and the second rail portion is reduced, and is brought into a supportable state from an unsupportable state. When the deforming portion is driven to widen by the widening driving means, the separating portion provided in the deforming portion is separated from the contact portion. Here, when the deformable portion is supported by the reduction driving means, the restricting portion provided on the contact portion is brought into contact with the separation portion so as to restrict the driving of the deforming portion by the reduction driving means. .

  According to a fifth aspect of the present invention, there is provided the guide rail according to any one of the first to fourth aspects, wherein the drivable state displacing means provided in the deformable portion is in a drivable state drivable by the deformable driving means. It is configured such that it can be displaced to a non-driveable state in which it cannot be driven by the deforming drive means.

  According to a sixth aspect of the present invention, in the guide rail according to the fifth aspect, when the mechanical equipment is supported from below, the drivable state displacement unit is displaced from a non-drivable state to a drivable state.

  The guide rail according to claim 7 is the guide rail according to any one of claims 1 to 6, wherein the remote control means deforms and drives based on a drive instruction from a control device provided outside the caisson work chamber. The means is driven.

  A method for attaching and detaching mechanical equipment to and from a guide rail according to claim 8 is the method for attaching and detaching mechanical equipment to and from a guide rail according to any one of claims 1 to 7, wherein the machine is used in a caisson work room. The equipment is configured to be supported by the support mechanism provided in the remote operation device, and the equipment can be moved in the caisson work room by the movement mechanism provided in the remote operation device while supporting the mechanical equipment by the support mechanism The remote working device is configured to be remotely operable based on a driving instruction from a control device provided outside the caisson working room. Here, the mechanical equipment is attached to and detached from the guide rail by driving the deformable portion by the deformation driving means while the mechanical equipment is supported by the remote working device.

  According to a ninth aspect of the present invention, there is provided the method for attaching and detaching the mechanical equipment to and from the guide rail according to the eighth aspect, wherein the mechanical equipment is supported by the support mechanism of the remote operation drivable operating device. Then, the drivable state displacement means is displaced from the non-drivable state to the drivable state.

  According to the guide rail according to claim 1, the guide rail is provided on the ceiling in the caisson work chamber, and the mounting portion is attached to the ceiling, and the caisson work is performed by the support portion extending from the mounting portion. Mechanical equipment used indoors is configured to be supportable. Further, at least a deformable portion provided at a predetermined portion of the support portion is configured to be deformable into a supportable state in which mechanical equipment can be supported and a supportable state in which mechanical equipment cannot be supported. The deformable portion is configured to be drivable in a supportable state or an unsupportable state by the deformation driving unit. Thereby, when the deformed portion is in a supportable state, the work is performed by the machine equipment in the caisson work room while supporting the machine equipment by the support portion of the guide rail, and the machine equipment is detached from the guide rail. By deforming the deformable portion to an unsupportable state by the deforming drive means, the device can be detached from the guide rail without disassembling or deforming the mechanical equipment. Therefore, there is an effect that it is possible to reduce the number of work steps of the worker under the high-pressure environment in the caisson work room, and to shorten the work period and reduce the labor cost. Also, since the mechanical equipment can be attached to and detached from the guide rail without disassembling or deforming the mechanical equipment, there is no need to develop a dedicated mechanical equipment that is easily disassembled or deformed, and the existing mechanical equipment can be attached to and detached from the guide rail. This has the effect of reducing the development cost of mechanical equipment.

  According to the guide rail of claim 2, in addition to the effect of the guide rail of claim 1, the following effect is obtained. That is, a first rail portion is provided on the ceiling portion, and a second rail portion is provided on the ceiling portion in a pair with the first rail portion. Then, the widening driving means provided in the deformation driving means drives the deforming portion in a direction in which the width of the first rail portion and the second rail portion is widened in the predetermined portion, and is changed from the supportable state to the unsupportable state. You. Accordingly, when the machine equipment is detached from the guide rail, the width of the first rail portion and the second rail portion is increased at a predetermined portion of the guide rail by the widening driving means, and the guide rail does not support the mechanical equipment. By disabling, the mechanical equipment can be detached from the guide rail without disassembly or deformation. Therefore, there is an effect that it is possible to reduce the number of work steps of the worker under the high-pressure environment in the caisson work room, and to shorten the work period and reduce the labor cost.

  According to the guide rail of the third aspect, in addition to the effect of the guide rail of the second aspect, the following effect is obtained. That is, a first deformed portion that is a deformed portion is provided on the first rail portion, and a second deformed portion that is also a deformed portion is provided on the second rail portion. And the 1st deformation part and the 2nd deformation part are driven simultaneously by the simultaneous drive means provided in the deformation drive means. Thus, when the machine equipment is detached from the guide rail, the first and second deformable portions are simultaneously driven in a predetermined portion of the guide rail by the simultaneous driving means, so that the first rail portion and the second rail portion are simultaneously driven. The part can be synchronously displaced to a supportable state or an unsupportable state. Therefore, when attaching / detaching mechanical equipment to / from the guide rail, one of the rails is configured to be hard to cause an event such as contact with the mechanical equipment, and the mechanical equipment should be smoothly attached / detached from the guide rail without disassembly or deformation. Can be. As a result, there is an effect that it is possible to reduce the number of man-hours for the worker under the high-pressure environment in the caisson work room, to shorten the construction period, and to reduce the labor cost.

  According to the guide rail of the fourth aspect, in addition to the effects of the guide rail of the second or third aspect, the following effect is obtained. That is, the contact portion is provided so as to contact the deformed portion, and the deforming portion is driven in a direction in which the width of the first rail portion and the second rail portion is reduced by the reduction driving device provided in the deformation driving device. From the unsupportable state to the supportable state. When the deforming portion is driven to widen by the widening driving means, the separating portion provided in the deforming portion is separated from the contact portion. Here, when the deformable portion is supported by the reduction driving means, the restricting portion provided on the contact portion is brought into contact with the separation portion so as to restrict the driving of the deforming portion by the reduction driving means. . Thus, when the deformable portion of the guide rail is driven from the unsupportable state to the supportable state, the separated portion of the deformable portion comes into contact with the restricting portion of the contact portion when the supportable state is reached. Can be restricted in the direction in which the image is reduced. Therefore, there is an effect that it is possible to prevent the deformed portion from being driven more than necessary in the contraction direction, and to accurately set the deformable portion in a supportable state.

  According to the guide rail of the fifth aspect, in addition to the effects of the guide rail of the first to fourth aspects, the following effects are obtained. That is, the drivable state displacing means provided in the deformable portion is configured to be displaceable into a drivable state drivable by the deformable driving means and a drivable state impossible to be driven by the deformable driving means. This makes it possible to create a state in which the deformable part can be deformed by the deformable driving means and a state in which the deformable part cannot be deformed. If the deformable part is to be driven by the deformable driving means, it is driven first by the drivable state changing means. After being made possible, it is possible to create a stepwise process of driving the deformed portion by the deformation driving means. Therefore, for example, even if the deformed portion is driven in an unintended situation due to a malfunction of the deformed driving means, the deformed portion is not driven if the drive is not possible, so that the guide rail is not intended by the mechanical equipment. This has the effect of preventing the machine equipment from falling off, and preventing the mechanical equipment from falling and being damaged.

  According to the guide rail of claim 6, in addition to the effect of the guide rail of claim 5, the following effect is obtained. That is, when the mechanical equipment is supported from below, the drivable state displacement means is displaced from the drivable state to the drivable state. Accordingly, since the deformable portion does not enter the drivable state unless the mechanical equipment is supported from below, it is possible to prevent the mechanical equipment from dropping off the guide rail when the mechanical equipment is not supported. Therefore, when dropping the machine equipment from the guide rails, it is possible to perform the operation while always supporting the machine equipment, and it is possible to prevent the machine equipment from being dropped and damaged.

  According to the guide rail of the seventh aspect, in addition to the effects of the guide rail of the first to sixth aspects, the following effects are obtained. That is, the deformation driving means is driven by the remote control means based on a driving instruction from a control device provided outside the caisson work chamber. Thereby, when the machine equipment is detached from the guide rail, the deformed portion is deformed to an unsupportable state by the deforming drive means by remote control from outside the caisson work chamber, and the machine equipment is detached from the guide rail, thereby removing the caisson work chamber. In this case, the work load on the operator can be reduced. Therefore, there is an effect that it is possible to reduce the number of work steps of the worker under the high-pressure environment in the caisson work room, and to shorten the work period and reduce the labor cost.

  According to the method for attaching and detaching mechanical equipment to and from the guide rail according to the eighth aspect, the following effects are achieved in addition to the effects achieved by the guide rails according to the first to seventh aspects. That is, the mechanical equipment used in the caisson working room is configured to be able to be supported by a support mechanism provided in the remote working device, and provided in the remote working device in a state where the mechanical equipment is supported by the supporting mechanism. The moving mechanism is configured to be movable in the caisson working room, and the remote working device is configured to be remotely operable based on a driving instruction from a control device provided outside the caisson working room. Here, the mechanical equipment is attached to and detached from the guide rail by driving the deformable portion by the deformation driving means while the mechanical equipment is supported by the remote working device. In this way, by driving the deformed portion of the guide rail and detaching the mechanical equipment from the guide rail while supporting the mechanical equipment by operating the remote working device by remote control from outside the caisson work chamber, The work load on the worker can be reduced. Therefore, there is an effect that it is possible to reduce the number of work steps of the worker under the high-pressure environment in the caisson work room, and to shorten the work period and reduce the labor cost.

  According to the method for attaching and detaching mechanical equipment to and from the guide rail according to the ninth aspect, in addition to the effect achieved by the method for attaching and detaching mechanical equipment to and from the guide rail according to the eighth aspect, the following effect is achieved. That is, when the mechanical equipment is supported by the support mechanism of the remote operation drivable business device, the drivable state displacement unit is displaced from the non-drivable state to the drivable state. With this configuration, when the machine equipment is dropped from the guide rail, the deformed portion is not driven unless the machine equipment is supported by the support mechanism of the remote work device, so that the machine equipment can be installed in the remote work device. In unsupported situations, it is possible to prevent the mechanical equipment from falling off the guide rail. Therefore, when dropping the machine equipment from the guide rail, the work can always be performed in a state where the machine equipment is supported by the remote working device, and it is possible to prevent the machine equipment from falling and being damaged, This has the effect.

It is a typical longitudinal section showing an example of the main equipment used in the pneumatic caisson method. It is a side view of a lifter which is an example of the device for remote work concerning the present invention. It is the perspective view which showed the drive mode of the lifter. It is a side view of the excavator which is an example of mechanical equipment. It is a typical longitudinal section showing the situation where an excavator is recovered from a caisson work room via a recovery shaft using a lifter according to the present invention in a stepwise manner. FIG. 9 is a schematic top view showing a guide rail of a second embodiment and a widening drive mechanism provided on the guide rail. It is a typical top view showing the state where the right wide part and the left wide part of the guide rail of 2nd Embodiment were widened by the widening drive mechanism. In the excavator of the second embodiment, the front shaft is located directly below the right second pinion and the left second pinion, and the rear shaft is located immediately below the right first pinion and the left first pinion. It is a side view in the case. It is a typical front view showing the state where the excavator of a 2nd embodiment was hung on a guide rail. (A) is a schematic front view showing a state in which the excavator is suspended on a guide rail, and (b) is a traveling shaft of the excavator by extending each arm member of the lifter from the state of (a). FIG. 4 is a schematic front view showing a state in which is supported. 10A is a schematic front view showing a state in which each widening portion of each guide rail is widened by the widening drive mechanism from the state of FIG. 10B, and FIG. 10B is a lifter from the state of FIG. FIG. 4 is a schematic front view showing a state in which the excavator is removed from the guide rail by contracting each arm member of FIG.

<First embodiment>
Hereinafter, with reference to FIG. 1 to FIG. 5, a first example in which a transport lift-up device (hereinafter, simply referred to as “lifter”) 5 which is an example of a remote working device of the present invention is applied in a pneumatic caisson method. An embodiment will be described. FIG. 1 is a schematic longitudinal sectional view showing an example of main equipment used in the pneumatic caisson method. The pneumatic caisson method comprises a caisson 1 made of reinforced concrete, a caisson work room 2 formed in the ground by the caisson 1, and a pair of left and right guide rails 3 provided on a ceiling 2a in the caisson work room 2. A caisson while digging in the ground by a bucket unit 45 provided in the excavator 4 using an excavator 4 that can run along the guide rail 3 while being suspended on the guide rail 3. 1 is to be submerged in the ground to build an underground structure.

  Further, in the pneumatic caisson method, a man shaft 10 is used to allow a worker to enter and exit the caisson work chamber 2 from the ground. The manshaft 10 mainly has a man-in / out section 11 through which a worker enters and exits the manshaft 10, and a cylindrical shape that communicates with the man-in / out section 11 and communicates the ground with the inside of the caisson work chamber 2. A man insertion portion 12, a spiral staircase (not shown) provided in the man insertion portion 12, and a man lock 13 for adjusting a pressure difference between the atmospheric pressure on the ground and the pressure in the caisson work chamber 2; Is provided.

  The man insertion portion 12 can extend the entire length of the man shaft 10 by fixing (adding) a lower end portion of another man insertion portion 12 to a flange portion provided at an upper end portion thereof with a bolt or the like. It is configured to be able to cope with a large depth. An operator working in the caisson work room 2 can move between the ground and the caisson work room 2 through the spiral staircase in the man shaft 10.

  The manlock 13 includes a manlock lower door capable of closing a ceiling portion of the caisson work chamber 2 and a manlock upper door provided above the manlock lower door (both not shown; the same applies hereinafter). When a worker enters or exits the caisson work chamber 2, the air pressure in the caisson work chamber 2 is changed by closing one door and opening the other door. Is suppressed or reduced.

  In the pneumatic caisson method, the excavator 4 is used to carry out the earth and sand excavated in the caisson work room 2 by using a crane 20 provided on the ground, or to suspend and use the ceiling 2 a of the caisson work room 2. A collection shaft 14 for transporting (elevating and lowering) mechanical equipment such as is provided. The collection shaft 14 mainly communicates with the collection / extraction unit 15 for carrying out / exporting the earth and sand and the machinery / equipment, and the collection / extraction unit 15 to communicate the ground with the inside of the caisson work chamber 2. There is provided a collection insertion portion 16 having a cylindrical shape and a collection lock 17 for adjusting a pressure difference between the atmospheric pressure on the ground and the pressure in the caisson work chamber 2. In addition, separately from the collection shaft 14 that transports the mechanical equipment, a material shaft dedicated to discharging earth and sand may be separately provided.

  Similar to the man insertion portion 12, the collection insertion portion 16 fixes (adds) the lower end portion of another collection insertion portion 16 to a flange portion provided at the upper end thereof with a bolt or the like, so that the collection shaft 14 is formed. The entire length can be extended, and it can be adapted to a large depth. Therefore, even when the caisson 1 is deepened, the earth and sand excavated in the caisson work chamber 2 can be discharged to the ground to a depth corresponding to the length of the wire 21 of the crane 20, and the collection shaft 14 can be removed. The loading and unloading of mechanical equipment such as the excavator 4 can be carried out.

  The collection and insertion portion 16 is, for example, an excavator that is the largest mechanical equipment in order to insert mechanical equipment such as the excavator 4, lighting equipment, and a surveillance camera (all are not shown; the same applies hereinafter). 4 has a larger diameter (for example, a diameter of about 2000 mm) than each of the total width and the height width. Therefore, at least the crane is mounted on the rear end portion of the excavator 4 (hook mounting portion (not shown; the same applies hereinafter)) so that the entire length (longitudinal) direction of the excavator 4 is vertical. The excavator 4 can be moved up and down in the collection insertion portion 16 by the crane 20 when the hook 22 provided at the distal end portion of the wire 21 of 20 is attached and suspended. Therefore, it is not necessary to disassemble the excavator 4 and the like for each part in the caisson work chamber 2, so that the number of work steps in the caisson work chamber 2 can be reduced. Also, there is no need to make the excavator 4 into a special structure such as easy disassembly, and the existing excavator 4 can be carried out to the ground as it is (without disassembly). Such development costs can be reduced.

  In addition, by making the inner diameter of the collection insertion portion 16 larger than the entire length of the excavator 4, the excavator 4 and the like can be transported more easily, but the cost associated with the increase in the diameter of the collection insertion portion 16 can be considered. It is not preferable because it causes a cost increase due to an increase in the size of the recovery lock 17 to be described later or a compressed air leak from the caisson work chamber 2.

  Similar to the man lock 13, the collection lock 17 includes a collection lock lower door capable of closing a ceiling portion of the caisson work chamber 2 and a collection lock upper door provided above the collection lock lower door (both are not shown). The same applies to the following.) When carrying out or carrying in earth and sand or mechanical equipment into the caisson work chamber 2, one door is closed and the other is opened. , So that a change in the atmospheric pressure in the caisson working chamber 2 can be suppressed. The collection lock 17 is provided with an insertion hole (not shown) through which the wire 21 of the crane 20 can be inserted, and the wire 21 can be moved up and down while the collection lock 17 is closed.

  The caisson work chamber 2 is formed in the ground by the caisson 1 and the ground being excavated, and operates the air pressure adjusting device (not shown) with the man lock 13 and the recovery lock 17 closed to perform caisson work. Excavation work can be performed while maintaining the internal pressure of the chamber 2 in a high-pressure environment and preventing spring water or the like into the caisson work chamber 2. Note that, as the depth of the caisson 1 increases, the internal pressure in the caisson work chamber 2 is configured to increase according to the depth.

  A plurality of left and right guide rails 3 are laid on the ceiling 2 a of the caisson work room 2. Each of the guide rails 3 is configured such that mechanical equipment such as an excavator 4, lighting equipment, and a monitoring camera can be suspended.

  The mechanical equipment suspended (suspended) on the guide rails 3 is configured to be individually and remotely controllable by an operator in a control room 30 provided on the ground (that is, outside the caisson work room 2). More specifically, an image of the caisson work room 2 taken by the monitoring camera is displayed on a monitor 31 provided in the control room 30, and the illumination intensity and direction of the light by the lighting equipment, and the excavator on the guide rail 3. The moving position of the excavator 4, the turning direction of the excavator 4, and the driving mode of the arm unit 44 or the bucket unit 45 of the excavator 4, which will be described later, are displayed on the monitor 31. In the control room 30, the operator operates the controller 32 while checking the image on the monitor 31, so that the photographing direction of the monitoring camera, the illumination brightness and the illumination direction of the lighting equipment, the excavation on the guide rail 3 are performed. The driving position of the excavator 4, the turning direction of the excavator 4, the arm 44 and the bucket 45 can be controlled. The detailed configuration of the excavator 4 will be described later with reference to FIG.

  A lifter 5 that is transportable and movable while supporting mechanical equipment such as the excavator 4 is disposed on an excavation surface (ground) in the caisson work chamber 2. Here, the details of the lifter 5 will be described with reference to FIGS. FIG. 2 is a side view of the lifter 5, and FIG. 3 is a perspective view showing a driving mode of the lifter 5.

As shown in FIGS. 2 and 3, the lifter 5 according to the present embodiment mainly includes a caterpillar 51 forming an endless track, a lifter base 52 to which the caterpillar 51 is assembled, and four corners of the lifter base 52 as viewed from above. The right front arm member 53, the left front arm member 54, the right rear arm member 55, and the left rear arm member 56 (hereinafter, the right front arm member 53, the left front arm member 54, and the right rear arm member 55, respectively) are provided. And the left rear arm member 56 may be collectively referred to as “each arm member 53 to 56”), a lifter drive unit 60, and a lifter drive battery 61.

  The caterpillar 51 is provided with a movement motor (not shown; the same applies hereinafter) for driving the caterpillar 51. The moving motor is configured to be operable by receiving power supply from a later-described lifter drive battery 61, and to issue a drive instruction from the control room 30 via a later-described lifter communication unit (not shown; the same applies hereinafter). When received by a lifter control unit (not shown, the same applies hereinafter) based on the drive instruction. By driving the moving motor, the caterpillar 51 is driven to rotate, and the lifter 5 can be moved according to the driving amount.

  Here, various operations of the lifter communication unit and the lifter control unit will be described. The lifter communication unit is housed in a storage unit for a lifter drive battery 61, which will be described later, and is configured to be able to receive various instruction commands from the controller 32 of the control room 30 and to control results (detection results) by the lifter control unit. Is output to the controller 32.

  The lifter control unit, similar to the lifter communication unit, is built in a storage unit for a later-described lifter drive battery 61, operates by receiving power supply from the lifter drive battery 61, and receives a signal from the controller 32 via the lifter communication unit. Is configured to execute various controls relating to the lifter 5 in response to a drive instruction command from the controller. Specifically, via the lifter drive unit 60, driving of the moving motor, expansion and contraction of the base cylinder 52a described later, expansion and contraction of each cylinder 53b to 56b of each arm member 53 to 56, and each of the arm members 53 to 56 Opening / closing drive of the grippers 53a to 56a is performed.

  Further, the lifter control unit is configured to determine the detection results of the various detection devices included in the lifter 5 and transmit the determination results to the controller 32 via the lifter communication unit. Specifically, the lifter control unit detects the position information of the lifter 5, detects the amount of movement of the moving motor, detects the expansion / contraction state of the base cylinder 52a, detects the expansion / contraction state of each of the arm members 53 to 56, and will be described later. The detection result such as the tilt detection of the lifter 5 by the tilt detection device (not shown) is output to the controller 32 via the lifter communication unit.

  Next, the lifter base 52 is provided with a base cylinder 52a capable of expanding and contracting the height of the lifter base 52, and a base detection device (not shown) capable of detecting the height position of the lifter base 52 by the base cylinder 52a. ing. The base cylinder 52a expands and contracts in response to a drive instruction from the lifter control unit, thereby changing the height of the lifter base 52 from the ground up to one meter at a maximum and adjusting the height position of the mechanical equipment conveyed by the lifter 5. (See FIG. 3). The height of the lifter base 52 by the base cylinder 52a is detected by the base detection device, and the detection result is output to the monitor 31 and the controller 32 of the control room 30 by the lifter communication unit. Thereby, the height position of the lifter base 52 can be grasped in the control room 30, and control according to the height position can be performed.

  The right front arm member 53 includes a right front grip 53a, a right front cylinder 53b, and a right front detection device (not shown; the same applies hereinafter). The right front grip 53a is configured to be able to grip (hold) a front shaft 41b1 of the excavator 4 described later by extending and contracting the two right front grip cylinders in accordance with a drive instruction from the lifter control unit. The right front side of the excavator 4 is fixedly supported by the right front arm member 53 by gripping the front shaft 41b1 with the right front grip portion 53a.

  The right front cylinder 53b is formed of a so-called multi-stage cylinder in which a plurality of pistons and cylinder tubes are combined, and expands and contracts in the vertical direction in response to a drive instruction from a lifter control unit, whereby the height position of the right front grip unit 53a from the ground. Can be changed up to a maximum of 5 meters.

  The front right detection device can detect the expansion / contraction mode of the front right cylinder 53b, that is, the height position of the front right grip 53a, and the detection result is output to the monitor 31 and the controller 32 of the control room 30 by the lifter communication unit. You. Thereby, the expansion / contraction state of the right front arm member 53 can be grasped in the control room 30, and control according to the expansion / contraction state becomes possible.

  The front left arm member 54 includes a front left grip 54a, a front left cylinder 54b, and a front left detection device (not shown; the same applies hereinafter). The left front grip 54a is configured to be able to grip (hold) a front shaft 41b1 of the excavator 4 to be described later by expanding and contracting the two left front grip cylinders in accordance with a drive instruction from the lifter control unit. The left front side of the excavator 4 is fixedly supported by the left front arm member 54 by gripping the front shaft 41b1 with the left front grip portion 54a.

  Like the right front cylinder 53b, the left front cylinder 54b is formed of a so-called multi-stage cylinder in which a plurality of pistons and cylinder tubes are combined, and expands and contracts in the up and down direction by a drive instruction from a lifter control unit. The height position can be changed up to 5 meters.

  The left front detection device can detect the expansion / contraction mode of the left front cylinder 54b, that is, the height position of the left front grip 54a, and the detection result is output to the monitor 31 and the controller 32 of the control room 30 by the lifter communication unit. You. Thereby, the expansion and contraction mode of the left front arm member 54 can be grasped in the control room 30, and control according to the expansion and contraction mode becomes possible.

  The right rear arm member 55 includes a right rear grip portion 55a, a right rear cylinder 55b, and a right rear detection device (not shown; the same applies hereinafter). The right rear grip 55a is configured to be capable of gripping (holding) a rear shaft 41b2 of the excavator 4, which will be described later, by expanding and contracting the two right rear grip cylinders in accordance with drive instructions from the lifter control unit. By gripping the rear shaft 41b2 by the right rear grip portion 55a, the right rear side of the excavator 4 is fixedly supported by the right rear arm member 55.

  Like the right front cylinder 53b and the left front cylinder 54b, the right rear cylinder 55b is formed of a so-called multi-stage cylinder in which a plurality of pistons and cylinder tubes are combined, and expands and contracts in the vertical direction according to a drive instruction from a lifter control unit. The height of the grip 55a from the ground can be changed up to 5 meters.

  The right rear detection device can detect the expansion / contraction mode of the right rear cylinder 55b, that is, the height position of the right rear grip 55a, and the detection result is transmitted to the monitor 31 and the controller 32 of the control room 30 by the lifter communication unit. Output. Thus, the expansion / contraction state of the right rear arm member 55 can be grasped in the control room 30, and control according to the expansion / contraction state becomes possible.

  The left rear arm member 56 includes a left rear grip portion 56a, a left rear cylinder 56b, and a left rear detection device (not shown; the same applies hereinafter). The left rear grip portion 56a grips (holds) a rear shaft 41b2 of the excavator 4 described later, similarly to the right rear grip portion 55a, by expanding and contracting the left rear grip cylinder 2 according to a drive instruction from the lifter control unit. ) Can be configured. By gripping the rear shaft 41b2 by the left rear grip portion 56a, the left rear side of the excavator 4 is fixedly supported by the left rear arm member 56.

  Like the front right cylinder 53b, the front left cylinder 54b, and the rear right cylinder 55b, the rear left cylinder 56b is configured by a so-called multi-stage cylinder in which a plurality of pistons and cylinder tubes are combined, and expands and contracts in the vertical direction according to a drive instruction from a lifter control unit. Thus, the height position of the left rear grip 56a from the ground can be changed up to a maximum of 5 meters.

  The left rear detection device can detect the expansion / contraction mode of the left rear cylinder 56b, that is, the height position of the left rear grip 56a, and the detection result is transmitted to the monitor 31 and the controller 32 of the control room 30 by the lifter communication unit. Output. Thereby, the expansion / contraction mode of the left rear arm member 56 can be grasped in the control room 30, and the control according to the expansion / contraction mode becomes possible.

  Therefore, the right front arm member 53, the left front arm member 54, the right rear arm member 55, and the left rear arm member 56 stably support the mechanical equipment such as the excavator 4 at at least four points in the lifter 5. And can be transported.

  Further, the lifter 5 includes a tilt detection device (not shown, the same applies hereinafter), a lifter communication unit, a lifter control unit, a lifter drive unit 60, and a lifter drive battery 61.

  The tilt detecting device operates by receiving power supply from the lifter driving battery 61, and is configured by a pendulum type tilt sensor that detects the tilt of a suspended weight or a float type tilt sensor that detects the tilt of a liquid surface. It is configured to be able to detect its own inclination angle with respect to the horizontal direction. In the present embodiment, based on the above-described expansion and contraction of each of the arm members 53 to 56, the tilt detection device detects the tilt angle of the lifter 5, and the mechanical equipment such as the excavator 4 supported by the lifter 5. It is configured so that the inclination can be detected. In addition, as an inclination detection device, an acceleration sensor, a gyro sensor, an inertial measurement device, or the like may be used as the inclination detection device in addition to the inclination sensor to detect the inclination angle of the lifter 5.

  As described above, the lifter communication unit includes an output unit that outputs various driving modes of the lifter 5 to the monitor 31 of the control room 30 and a receiving unit that receives a drive instruction from the controller 32 of the control room 30 (both of them). (Not shown).

  As described above, the lifter control unit communicates with a micro-processing unit (Micro-Processing Unit; hereinafter, abbreviated as “MPU”) as a one-chip microcomputer that controls each of the lifters 5 and various devices. It has a port to take. The MPU includes a read only memory (hereinafter, abbreviated as “ROM”) that stores various control programs for the lifter drive components executed by the MPU and fixed value data, and the ROM stores the read only memory. A random access memory (Random Access Memory; hereinafter abbreviated as “RAM”), which is a memory for temporarily storing various data and the like when executing the stored control program, an interrupt circuit, Various circuits such as a timer circuit and a data transmission / reception circuit are built in.

  The lifter control unit, when receiving a drive instruction from the controller 32 via the lifter communication unit, activates a control program corresponding to the drive instruction and drives and controls each lifter drive component of the lifter 5. The driving result (detection result) is configured to be output to the monitor 31 and the controller 32 via the lifter communication unit.

The lifter drive unit 60 is configured to include an electric motor, a hydraulic pump, a hydraulic oil tank, and a control valve group (all not shown; the same applies hereinafter). The lifter drive unit 60 is driven and controlled by a lifter control unit, receives power supply from a lifter drive battery 61, and moves the caterpillar 51, the base cylinder 52a of the lifter base 52, and the right front grip of the right front arm member 53. Part 53a and right front cylinder 53b, left front grip part 54a and left front cylinder 54b of left front arm member 54, right rear grip part 55a and right rear cylinder 55b of right rear arm member 55, and left of left rear arm member 56 The hydraulic pump is driven by electric motors provided so as to correspond to the rear grip portion 56a and the left rear cylinder 56b (hereinafter, referred to as "lifter driving parts"), and the hydraulic oil stored in the hydraulic oil tank is The direction and flow rate of hydraulic oil supplied to each lifter drive component are controlled by a group of control valves. Ter driving parts each of which is configured to drive individually controlled.

  The lifter drive battery 61 is configured to be able to supply electric power for operating each of the lifter drive components and the lifter control unit described above.

  With this configuration, the remote control from the control room 30 allows the excavator 4 to be transported by the grippers 53a to 56a of the arm members 53 to 56 of the lifter 5 while holding the excavator 4 while holding the arm members 53 to 56. Accordingly, the excavator 4 can be moved in the caisson working chamber 2 while being supported at four points. Then, any one or more of the arm members 53 to 56 of the lifter 5 is extended and retracted to the collection inlet / outlet part 15 of the collection shaft 14 to lift the excavator 4 with the wire 21 of the crane 20 while tilting. The excavator 4 can be carried out from the caisson work room 2.

  Next, details of the excavator 4 will be described with reference to FIG. FIG. 4 is a side view of the excavator 4. As shown in FIG. 4, the excavator 4 is mainly connected to a traveling base 41 having traveling rollers 41a, a pivoting base 42 provided to be pivotable with respect to the traveling base 41, and the pivoting base 42. An excavated base 43, an arm 44 connected to the excavated base 43, and a bucket 45 connected to the arm 44 are provided.

  The traveling base 41 includes a pair of left and right front wheel side traveling rollers 41a, a pair of left and right rear wheel traveling rollers 41a, a traveling motor for rotating the traveling rollers 41a, and a pair of left and right traveling rollers 41a. And a hook attachment portion (not shown; the same applies hereinafter) to which a traveling shaft 41b provided in parallel with the traveling detection device, and a hook 22 provided at the tip of the wire 21 of the crane 20 can be engaged. ) Are provided. In addition, you may comprise so that a hook attachment part may be provided in the excavation base 43 or the arm part 44 mentioned later.

  The traveling motor is configured to be operable by receiving power supply from an excavator driving battery (not shown; the same applies hereinafter) to be described later, and to provide a driving instruction from the control room 30 to an excavator communication unit (to be described later). (Not shown, hereinafter the same)), the excavator control unit (not shown, hereinafter the same) can be driven based on the drive instruction. By driving the traveling motor, the excavator 4 can slide on the guide rail 3 provided on the ceiling 2 a of the caisson work room 2.

  The traveling detection device can detect the driving amount of the traveling motor and detect the position information of the excavator 4, and the detection result is transmitted to the monitor 31 and the controller 32 of the control room 30 by the excavator communication unit described later. Output. As a result, the driving amount of the traveling motor can be grasped in the control room 30, and control according to the traveling amount (the position of the excavator 4) can be performed.

  Here, various operations of the excavator communication unit and the excavator control unit will be described. The excavator communication unit is built in the excavation base 43, is configured to be able to receive various instruction commands from the controller 32 in the control room 30, and transmits a control result (detection result) by the excavator control unit to the controller 32. It is configured to be able to output.

  The excavator control unit, like the excavator communication unit, is built in the excavator base 43, operates by receiving power supply from the excavator drive battery, and operates from the controller 32 received via the excavator communication unit. It is configured to execute various controls related to the excavator 4 according to the instruction command. Specifically, driving of a traveling motor, driving of a turning motor of a turning base 42 to be described later, expansion and contraction of an up and down cylinder of an excavating base 43 to be described later, and expansion and contraction cylinder of an arm section 44 to be described later, via an excavator driving unit. , And the expansion and contraction of a bucket cylinder (not shown, the same applies hereinafter), which will be described later.

  Further, the excavator control unit is configured to determine the detection results of the various detection devices included in the excavator 4, and transmit the determination results to the controller 32 via the excavator communication unit. Specifically, the excavator control unit detects the position information of the excavator 4, detects the moving amount of the traveling motor, detects the moving amount (rotation amount) of the turning motor, detects the expansion / contraction state of the undulating cylinder, The detection results such as the detection of the expansion and contraction state of the arm cylinder and the detection of the expansion and contraction state of the bucket cylinder are output to the controller 32 via the excavator communication unit.

  Next, the traveling shaft 41b has a front shaft 41b1 provided on the traveling roller 41a side of the front wheel, and a rear shaft 41b2 provided on the traveling roller 41a side of the rear wheel, and the front shaft 41b1 and the rear shaft 41b2. Are fixed to the traveling base 41, respectively. As described above, while the traveling shafts 41b1 and 41b2 are held by the grippers 53a to 56a of the lifter 5, the excavator 4 (the traveling roller 41a) is de-wheeled from the guide rail 3 so that excavation is performed by the lifter 5. Machine 4 is supported.

  The turning base 42 is provided with a turning motor, and the turning base 42 is attached to the traveling base 41 so as to be freely turnable by the turning motor. Specifically, the turning motor is configured to be operable by receiving power supply from an excavator driving battery described later, and when a driving instruction from the control room 30 is received via the excavator communication unit, The excavator control unit is configured to be drivable based on the drive instruction. By driving the turning motor, the turning base 42, the excavating base 43, the arm 44, and the bucket 45 are turned with respect to the traveling base 41, and the excavator suspended on the guide rail 3 of the caisson work chamber 2. 4 can change the direction of the bucket portion 45.

  The turning detection device can detect the driving amount of the turning motor and detect the turning amount (direction) of the turning base 42, and the detection result is transmitted to the monitor 31 and the controller 32 of the control room 30 by the excavator communication unit. Output to Thereby, the turning amount of the turning motor can be grasped in the control room 30, and control according to the turning amount (the direction of the excavator 4) becomes possible.

  The excavation base 43 has an up / down cylinder, an up / down detection device, an excavator drive unit, and an excavator drive battery, and has an excavator communication unit and an excavator control unit built therein.

  A pair of undulating cylinders is provided on the left and right sides of the excavating base 43 with respect to the arm unit 44. It is configured.

  The undulation detection device can detect the expansion / contraction mode of the undulation cylinder, that is, the tilting state of the arm portion 44, and the detection result is output to the monitor 31 and the controller 32 of the control room 30 by the excavator communication unit. Accordingly, the tilted state of the arm unit 44 can be grasped in the control room 30, and control according to the tilted state can be performed.

  The excavator drive unit, like the lifter drive unit 60, is configured to include an electric motor, a hydraulic pump, a hydraulic oil tank, and a control valve group (all not shown; the same applies hereinafter). . The excavator drive unit is driven and controlled by the excavator control unit, and receives power supply from the excavator drive battery to drive the traveling motor of the traveling roller 41 a, the turning motor of the turning base 42, and the undulating cylinder of the excavating base 43. The hydraulic pump is driven by an electric motor provided to correspond to the telescopic cylinder of the arm part 44 and the bucket cylinder of the bucket part 45 (hereinafter referred to as “excavator driving parts”). A control valve group controls the direction and flow rate of the hydraulic oil stored in the hydraulic fluid and the hydraulic oil supplied to each excavator drive component, and each of the excavator drive components is individually driven and controlled. .

  The excavator drive battery is configured to be able to supply electric power for operating each of the above-described excavator drive parts and the excavator control unit.

  The excavator communication unit includes, as described above, an output unit that outputs various driving modes of the excavator 4 to the monitor 31 of the control room 30 and a receiving unit that receives a driving instruction from the controller 32 of the control room 30 ( (Both are not shown).

  As described above, the excavator control unit is provided with the MPU as a one-chip microcomputer that controls each control of the excavator 4 and the ports that communicate with various devices. The MPU has a ROM that stores various control programs and fixed value data of the excavator driving parts executed by the MPU, and temporarily stores various data when executing the control programs stored in the ROM. And various other circuits such as an interrupt circuit, a timer circuit, and a data transmission / reception circuit.

  When the excavator control unit receives a drive instruction from the controller 32 via the excavator communication unit, the excavator control unit activates a control program corresponding to the drive instruction and drives and controls each excavator drive component of the excavator 4. The driving result (detection result) is output to the monitor 31 and the controller 32 via the excavator communication unit.

  The arm section 44 is provided with a telescopic cylinder and an arm detection device.

  The telescopic cylinder expands and contracts in response to a driving instruction from the excavator control unit, so that the entire length of the arm unit 44 can be expanded and contracted.

  The arm detection device can detect the expansion / contraction mode of the telescopic cylinder, that is, the entire length of the arm unit 44, and the detection result is output to the monitor 31 and the controller 32 of the control room 30 by the excavator communication unit. . Thus, the expansion / contraction mode (length) of the entire arm unit 44 in the control room 30 can be grasped, and control according to the expansion / contraction mode becomes possible.

  The bucket part 45 is provided with a bucket rotatably connected to the tip part of the arm part 44, a bucket cylinder, and a bucket detection device.

  A pair of bucket cylinders is provided on the left and right sides of the bucket from the arm unit 44, and is configured to be able to rotate the bucket with respect to the arm unit 44 by expanding and contracting in response to a driving instruction from the excavator control unit. I have. That is, by driving the bucket cylinder from the retracted position to the extended position, the bucket is rotationally driven, and by positioning the ground on the drive path, the earth and sand in that portion can be excavated.

  Here, the caisson work room 2 is configured to have a room height of about 2 to 2.5 meters. The excavator 4 excavates the ground in the caisson work chamber 2 with the traveling base 41 suspended from the guide rails 3. Therefore, the lengths of the turning base 42, the excavating base 43, the arm 44, and the bucket 45 are: It is configured to be able to extend and contract up to 2.5 meters in the minimum (contracted state) and 4 meters in the maximum (extended state). With this configuration, by driving the excavator 4 suspended on the guide rail 3 in the caisson work chamber 2, it is possible to excavate the ground at the lower peripheral portion of the guide rail 3.

  However, since the entire length of the excavator 4 is at least 2.5 meters and longer than the diameter of the collection shaft 14 (that is, 2 meters), when the excavator 4 is horizontal, the excavator 4 Can not be carried out or brought in from On the other hand, the entire width (about 1.5 meters) and the height (about 1.5 meters) of the excavator 4 are each configured to be within 2 meters. Therefore, when the excavator 4 is in the vertical state, it is possible to carry out or carry in the excavator 4 from the collection shaft 14 without disassembling the excavator 4 into components.

  In this case, when transporting the excavator 4 from the collection / ingress / exit portion 15 of the collection shaft 14, the excavator 4 must be fed into the collection / ingress / exit portion 15 from the rear end side (non-bucket portion 45 side). However, the ground in the caisson working chamber 2 is not always flat due to the effect of being excavated by remote control, and the conventional transporting device that only lifts and lowers the lifter base 52 accurately removes the excavator 4 from the collection / inlet 15 And the excavator 4 collides with the ground of the recovery shaft 14 or a transport device, and each or both devices may be damaged.

  Therefore, in the present embodiment, the excavator 4 is transported by the lifter 5 having the four arm members 53 to 56 and the tilt detecting device, and the tilt detecting device detects the tilt of the entire lifter 5 based on the detection result. By driving each of the arm members 53 to 56 to extend and contract, it is possible to accurately guide the excavator 4 to the collection / extraction section 15 (inside the collection shaft 14).

  Here, a case where the excavator 4 is carried out of the caisson working chamber 2 by the lifter 5 of the present embodiment will be described with reference to FIG. FIG. 5 is a schematic vertical cross-sectional view showing a state in which the excavator 4 is recovered from the caisson working chamber 2 via the recovery shaft 14 using the lifter 5 in a stepwise manner. FIG. 5B is a schematic vertical sectional view showing a state in which the excavator 4 is moved horizontally in the caisson work chamber 2 by the lifter 5, and FIG. 5B is a right rear arm member 55 of the lifter 5. FIG. 5C is a schematic longitudinal sectional view showing a state in which the excavator 4 is tilted by about 45 degrees from a horizontal state by extending the left rear arm member 56, and FIG. FIG. 9 is a schematic vertical sectional view showing a state in which the right front arm member 53 and the left front arm member 54 are extended to support the excavator 4 while being suspended and tilted from a horizontal state by about 60 degrees. 5A and 5B show a state in which the lifter base 52 has been raised, while FIG. 5C shows a state in which the lifter base 52 has been lowered. ing. FIG. 5C shows a state in which the right rear arm member 55 and the left rear arm member 56 are contracted.

  First, as shown in FIG. 5 (a), when the excavator 4 is removed from the guide rail 3, the lifter base 52 of the lifter 5 is lifted to prevent the excavator 4 from dropping. The traveling shafts 41b1 and 41b2 of the excavator 4 are held by the arm members 53 to 56 of the lifter 5, and in that state, the excavator 4 is removed from the guide rail (the wheel is removed). Thus, the excavator 4 can be held by the lifter 5 so that an impact is not generated on the lifter 5 due to the fall of the excavator 4 due to its own weight. In this state, the hook 22 of the wire 21 is attached to the hook attachment portion of the excavator 4.

  By driving the caterpillar 51 while holding the excavator 4 by the lifter 5, the excavator 4 can be transported in the caisson working chamber 2. Here, as described above, the ground in the caisson work chamber 2 is not necessarily a flat surface because the ground is excavated by the remote control of the excavator 4. Therefore, the excavator 4 can be stably transported by moving the lifter 5 using the caterpillar 51 having a larger ground contact surface (point) with the ground than the wheels.

  Next, as shown in FIG. 5B, the right rear arm member 55 and the left rear arm member 56 are extended from the state of FIG. 5A with respect to the excavator 4 held by the lifter 5. Then, the rear side (the hook attachment side) of the excavator 4 is tilted so as to be guided with respect to the collection entrance 15 of the collection shaft 14. In this case, the lifter base 52 maintains the state of being lifted, as in FIG. 5A, and the right front arm member 53 and the left front arm member 54 also contract, as in FIG. 5A. The state is maintained.

  Here, as described above, the entire lifter 5 may be tilted in any direction due to unevenness of the ground in the caisson work chamber 2. In this case, while detecting the tilt of the lifter 5 by the tilt detecting device of the lifter 5, the arm members 53 to 56 are controlled in consideration of the tilt. Specifically, for example, when the right side (the front side in the drawing) of the lifter 5 is inclined so as to be lower, the right front arm member 53 and the right rear side are provided by the left front arm member 54 and the left rear arm member 56. The arm member 55 is extended longer by an amount corresponding to the lower inclination, and the excavator 4 is configured to maintain a posture in which the width direction is horizontal (that is, the traveling shaft 41b is horizontal. The same applies hereinafter). Further, for example, when the left rear side (rear side in the drawing) of the lifter 5 is inclined to be lower, the left rear arm is provided by the right front arm member 53, the left front arm member 54, and the right rear arm member 55. The excavator 4 is configured to extend the member 56 longer by an amount corresponding to the inclination, and maintain the posture in which the width direction of the excavator 4 is horizontal. With this configuration, each of the arm members 53 to 56 is configured to be independently extendable and contractable, and the support posture of the excavator 4 by the lifter 5 is always kept constant (horizontally), so that the excavation is performed. It is easy to accurately guide the excavator 4 and the collection shaft 14 and the like to the collection / extraction portion 15 of the collection shaft 14 without causing the drill 4 to collide with the ground or the ceiling 2a or the like, thereby suppressing damage to the excavator 4 or the collection shaft 14 or the like. be able to.

  Next, as shown in FIG. 5C, the wire 21 of the crane 20 is wound up from the state of FIG. 5B, so that the right front arm member 53 and the left front arm member 54 of the lifter 5 While holding the front shaft 41b1, the rear side of the excavator 4 is further guided into the collection inlet / outlet 15 of the collection shaft 14.

  At this time, when the rear side of the excavator 4 is detected by a recovery detecting device (not shown, the same applies hereinafter) provided on the inner wall of the recovery inlet / outlet 15, the excavator 4 and each part of the lifter 5 are connected. In order to avoid a collision, first, the lifter base 52 of the lifter 5 is lowered, and the right rear arm member 55 and the left rear arm member 56 of the lifter 5 are contracted. In this state, while the excavator 4 is raised by winding the wire 21, the right front arm member 53 and the left front arm member 54 are extended in accordance with the rise to hold the traveling shaft 41 b of the excavator 4. . By driving in this manner, the excavator 4 is guided into the collection shaft 14 without colliding with the ground, the lifter 5 and the collection / extraction section 15.

  When the right front arm member 53 and the left front arm member 54 are detected by the collection detecting device of the collection / inlet 15, the excavator 4 is almost guided into the collection shaft 14, and the right front arm member is detected. The drive of the 53 and the left front arm member 54 is controlled to the contracted state. Further, as the excavator 4 is raised, the drive is controlled to move the lifter 5 rearward (to the right in the drawing). By controlling the driving in this way, collision between the excavator 4 and the lifter 5 can be avoided.

  As described above, according to the lifter 5 of the present embodiment, the excavator 4 is held by the gripping portions 53a to 56a of the arm members 53 to 56 of the lifter 5, while the excavator 4 is excavated by the arm members 53 to 56. The machine 4 is moved in the caisson work room 2 while being supported at four points. Then, any one or more of the arm members 53 to 56 of the lifter 5 is extended and retracted to the collection inlet / outlet part 15 of the collection shaft 14 to lift the excavator 4 with the wire 21 of the crane 20 while tilting. In addition, the excavator 4 can be accurately carried out of the caisson working chamber 2 while avoiding collision with the ground, the lifter 5 or the collection / exit portion 15.

  Further, while detecting the tilt of the lifter 5 by the tilt detecting device of the lifter 5, the drive of each of the arm members 53 to 56 can be controlled in consideration of the tilt. With such a configuration, even when there is unevenness on the ground surface, it becomes easy to accurately guide the excavator 4 to the collection / ingress / exit portion 15 of the collection shaft 14 without causing the excavator 4 to collide with the ground or the ceiling 2a. In addition, it is possible to prevent the excavator 4, the recovery shaft 14, and the like from being damaged.

  Further, regarding the unloading work of the excavator 4, by configuring the lifter 5 so that the excavator 4 can be unloaded from the caisson work room 2 by remote control, the man-hours of the worker in the caisson work room 2 under a high pressure environment can be minimized. It is possible to reduce the construction period, shorten the construction period and reduce labor costs.

  In addition, excavation work can be performed using the existing excavator 4, and the excavator 4 can be carried out of the caisson work chamber 2 by remote control without being disassembled or the like. Thus, the number of man-hours required for the disassembly of the excavator 4 can be eliminated, and the construction period can be shortened and labor costs can be reduced.

  Further, the excavator 4 can be carried out from the caisson work chamber 2 by remote control without developing the excavator 4 for disassembly, such as making the excavator 4 disassembly. Therefore, the development cost of the excavator 4 can be reduced, and the cost can be reduced. In addition, since it is not necessary to consider the movable reliability and the like in the disassemblable portion, the number of maintenance steps for the excavator 4 can be reduced.

<Second embodiment>
Next, a second embodiment in which the guide rail 3 which is an example of the present invention is applied to the pneumatic caisson method will be described with reference to FIGS. In the guide rail 3 of the first embodiment, a pair of left and right guide rails 3 is laid on a ceiling 2a of a caisson work chamber 2 (see FIG. 1), and mechanical equipment such as an excavator 4 is suspended on the guide rails 3. Thus, the work in the caisson work chamber 2 is performed. Specifically, when attaching or detaching the excavator 4 or the like to or from the guide rail 3, a part of the guide rail 3 is cut, and the excavator 4 or the like is suspended from the cut portion on the guide rail 3. The excavator 4 and the like suspended on the guide rail 3 are dropped from the cut portion, and the excavator 4 and the like are detached from the guide rail 3. Since the worker cuts the guide rail 3 or attaches / detaches the excavator 4 etc. in the caisson work room 2, there is a restriction on the time that the worker can stay in the caisson work room 2. Therefore, there is a possibility that the labor cost of the worker increases and the construction period is prolonged.

  On the other hand, in the guide rail 3 of the second embodiment, a right widened portion 3a5 is provided in a part of the right guide rail 3a, and a left widened portion 3b5 is provided in a part of the left guide rail 3b. The widening portions 3a5 and 3b5 are configured to be widened in the width direction of the guide rail 3 and displaceable by the widening drive mechanism 70 provided in the guide rail 3. With this configuration, in a state where the widened portions 3a5 and 35b are not widened, the excavator 4 and the like are allowed to work in the caisson work room 2 while the excavator 4 and the like are supported by the guide rails 3. When the excavator 4 and the like are attached to and detached from the guide rail 3, the widening portions 3 a 5 and 3 b 5 are widened by the widening drive mechanism 70 so that the excavator 4 and the like are attached to and detached from the guide rail 3 without being disassembled or deformed. Can be.

  Further, when the widening sections 3a5 and 3b5 are widened by the widening drive mechanism 70, the widening sections 3a5 and 3b5 are not driven by the widening drive mechanism 70 unless the excavator 4 and the like are supported by the lifter 5 (power). Is not transmitted). With such a configuration, it is possible to prevent the excavator 4 or the like from dropping off the guide rail 3 in a state where the excavator 4 or the like is not supported by the lifter 5. Therefore, when the excavator 4 or the like is dropped from the guide rail 3, the work can be always performed while the excavator 4 or the like is supported by the lifter 5, and the excavator 4 or the like is prevented from falling and being damaged. can do.

  Hereinafter, the guide rails 3 and the like of the second embodiment will be described focusing on the differences from the guide rails 3 and the like of the first embodiment. In the following description of the guide rails 3 and the like of the second embodiment, the same configurations and processes as those of the guide rails 3 and the like of the first embodiment are denoted by the same reference numerals as those of the first embodiment, and description thereof will be omitted. .

  First, with reference to FIGS. 6 and 7, the guide rail 3 of the second embodiment and the widening drive mechanism 70 provided on the guide rail 3 will be described. FIG. 6 is a schematic top view showing the guide rail 3 of the second embodiment and the widening drive mechanism 70 provided on the guide rail 3. FIG. 7 is a schematic top view showing a state where the right widening portion 3a5 and the left widening portion 3b5 of the guide rail 3 of the second embodiment have been widened by the widening driving mechanism 70.

  As shown in FIG. 6, the guide rails 3 are provided as a pair of right and left guide rails 3 a and 3 b, and the right guide rail 3 a and the left guide rail 3 b are both H-shaped H-sections having a horizontal section. It is composed of

  The right guide rail 3a mainly includes an upper right steel 3a1 attached to the ceiling 2a of the caisson work chamber 2, a right vertical steel 3a2 extending vertically downward from the upper right steel 3a1, A lower right steel 3a3 extending horizontally from the tip end of the vertical steel 3a2 to support the running roller 41a of the excavator 4 and a part of the guide rail 3 (for example, an end on the collection shaft 14 side). The right widening portion 3a5, which is widened and deformable in the widening direction (upper side in FIG. 6) of the right guide rail 3a and formed in a convex shape when viewed from the top, receives the power from the widening driving mechanism 70 described later, and widens rightward A right front rack 3a7 and a right rear rack 3a8 for widening and deforming the portion 3a5 are provided. The right widening portion 3a5 is in contact with the right widening portion 3a4 formed on the right guide rail 3a when the right widening portion 3a5 is in a supportable state capable of supporting the traveling roller 41a. The part 3a6 is formed.

  The left guide rail 3b mainly includes an upper left steel 3b1 attached to the ceiling 2a of the caisson work chamber 2, a left vertical steel 3b2 extending vertically downward from the upper left steel 3b1, and a left vertical steel 3b2. A lower left steel 3b3 extending horizontally from the tip end of the vertical steel 3b2 to the left and right in the horizontal direction and capable of supporting the traveling roller 41a of the excavator 4, and a part of the guide rail 3 (for example, an end on the recovery shaft 14 side); The left widening portion is formed so as to be paired with the right widening portion 3a5 of the right guide rail 3a, is deformable in the widening direction (the lower side in FIG. 6) of the left guide rail 3b, and is formed in a convex shape when viewed from above. 3b5, and a left front rack 3b7 and a left rear rack 3b8 that receive power from a widening drive mechanism 70 described later to widen and deform the left widening portion 3b5. When the left widened portion 3b5 is in a supportable state capable of supporting the traveling roller 41a, the left widened portion 3b5 is in contact with the left widened portion 3b4 formed on the left guide rail 3b. The part 3b6 is formed.

 The widening drive mechanism 70 mainly includes a hydraulic pump 71 capable of rotating a rotating shaft 72 described later by pressurizing a built-in hydraulic oil, and a predetermined direction (for example, clockwise) or counterclockwise by the hydraulic pump 71. A rotating shaft 72 that is rotated in a predetermined direction (for example, counterclockwise); a main gear 73 of a spur gear that rotates in the same direction as the rotating shaft 72 is rotated in a predetermined direction or a counter-predetermined direction; , Are provided. As the widening drive mechanism 70, on the right side (upper side in FIG. 6) of the main gear 73, there is provided a right spur gear 74 that meshes with the main gear 73 and rotates with the rotation of the main gear 73. A right rotation shaft 75 connected to the right gear 74 to rotate as the right gear 74 rotates, and a right rotation shaft 75 connected to the right rotation shaft 75 to rotate as the right rotation shaft 75 rotates. A first right pinion 76 and a second right pinion 77 are provided. Further, as the widening drive mechanism 70, on the left side (lower side in FIG. 6) of the main gear 73, there is provided a spur gear left gear 78 which meshes with the main gear 73 and rotates with the rotation of the main gear 73. A left rotation shaft 79 connected to the left gear 78 and rotated by the rotation of the left gear 78; and a left rotation shaft 79 connected to the left rotation shaft 79 and rotated by the rotation of the left rotation shaft 79. A first left pinion 80 and a second left pinion 81 are provided.

  The widening drive mechanism 70 is configured to be remotely operable by an operator in a control room 30 (see FIG. 1) provided on the ground (that is, outside the caisson work room 2). Specifically, the operator operates the controller 32 (see FIG. 1) while checking the image on the monitor 31 (see FIG. 1) to move the main gear 73 connected to the hydraulic pump 71 in each direction (clockwise). Or, it can be driven so as to be rotatable in a counterclockwise direction.

  The main gear 73, right gear 74, right first pinion 76, right second pinion 77, left gear 78, left first pinion 80 and left second pinion 81, right front rack 3a7, right rear rack 3a8, left front Each tooth profile of the rack 3b7 and the left rear rack 3b8 is omitted. The main gear 73, the right gear 74, and the left gear 78 are each formed of a plurality of gears. When the main gear 73 rotates in a predetermined direction (for example, clockwise), the right gear 74, the right first pinion 76 And the right second pinion 77 rotates in the same direction as the predetermined direction, and the left gear 78, the left first pinion 80, and the left second pinion 81 rotate in the opposite direction (for example, counterclockwise) to the predetermined direction. As long as it is configured to rotate, any configuration may be used with respect to the number of gears (mechanism for transmitting power) and the like.

  Here, when the main gear 73 of the widening drive mechanism 70 is rotated clockwise in a state where the right widening portion 3a5 and the left widening portion 3b5 shown in FIG. 6 can support the traveling roller 41a, the right gear 74, The first right pinion 76 and the second right pinion 77 are also rotated clockwise in conjunction with each other. In this case, if the right first pinion 76 and the right second pinion 77 are in mesh with (connected to) the right rear rack 3a8 and the right front rack 3a7 provided in the right widening portion 3a5, respectively, the right first pinion is provided. The right rear rack 3a8 and the right front rack 3a7 move in the widening direction (upward in FIG. 6) of the right guide rail 3a with the rotation of the right and second pinions 77, and the right rear rack 3a8 and the right front rack 3a7 are attached. The entire right widened portion 3a5 also moves in the widening direction of the right guide rail 3a (see FIG. 7).

  Next, when the main gear 73 of the widening drive mechanism 70 is rotated clockwise in a state where the right widening portion 3a5 and the left widening portion 3b5 also shown in FIG. 6 can support the traveling roller 41a, the left gear 78, The left first pinion 80 and the left second pinion 81 are also rotated counterclockwise in conjunction with each other. In this case, if the left first pinion 80 and the left second pinion 81 are in mesh with (connected to) the left rear rack 3b8 and the left front rack 3b7 provided in the left widened portion 3b5, respectively, the left first pinion 80 With the rotation of the left second pinion 81, the left rear rack 3b8 and the left front rack 3b7 move in the widening direction of the left guide rail 3b (downward in FIG. 6), and the left rear rack 3b8 and the left front rack 3b7 are attached. The entire left widened portion 3b5 also moves in the widened direction on the left guide rail 3b (see FIG. 7).

  The right front rack 3a7 and the right rear rack 3a8, and the left front rack 3b7 and the left rear rack 3b8 have the right first pinion 76 and the right first pinion 76 when the right widening part 3a5 and the left widening part 3b5 move in the widening direction. The two pinions 77 or the first left pinion 80 and the second left pinion 81 do not cross (disengage) beyond the right rear rack 3a8 and the right front rack 3a7, or the left rear rack 3b8 and the left front rack 3b7. A stopper (not shown) is provided.

  Next, when the main gear 73 of the widening drive mechanism 70 is rotated counterclockwise in a state where the right widening portion 3a5 and the left widening portion 3b5 shown in FIG. 7 cannot support the traveling roller 41a, the right gear 74, The right first pinion 76 and the right second pinion 77 are also rotated counterclockwise in conjunction with each other. In this case, if the right first pinion 76 and the right second pinion 77 are in mesh with (connected to) the right rear rack 3a8 and the right front rack 3a7 provided in the right widening portion 3a5, respectively, the right first pinion is provided. The right rear rack 3a8 and the right front rack 3a7 move in the contraction direction (downward in FIG. 7) of the right guide rail 3a with the rotation of the right second pinion 77 and the right rear rack 3a8 and the right front rack 3a7 are attached. The entire right widened portion 3a5 also moves in the contraction direction of the right guide rail 3a (see FIG. 6).

  At this time, the position where the right widened portion 3a5 reaches a state where the traveling roller 41a can be supported, that is, the end of the right widened portion 3a5 on the left guide rail 3b side is in contact with the left guide rail 3b side end of the right guide rail 3a. At one position, the right widening contact part 3a6 provided on the right widening part 3a5 is configured to contact the right contact part 3a4 provided on the right guide rail 3a side. When the right widening contact part 3a6 comes into contact with the right contact part 3a4, the movement of the entire right widening part 3a5 toward the left guide rail 3b (that is, the downward direction in FIG. 6) is restricted by the right contact part 3a4. The right widening portion 3a5 is positioned so that the end on the left guide rail 3b side does not project from the end on the left guide rail 3b side of the right guide rail 3a. Thereby, it is possible to restrict the right widened portion 3a5 from being moved (driven) in the contracting direction more than necessary, and to enable the right guide rail 3a and the right widened portion 3a5 to appropriately support the traveling roller 41a.

  Next, when the main gear 73 of the widening drive mechanism 70 is rotated counterclockwise in a state where the right widening portion 3a5 and the left widening portion 3b5 also cannot support the traveling roller 41a, as shown in FIG. The left first pinion 80 and the left second pinion 81 are also rotated clockwise in conjunction with each other. In this case, if the left first pinion 80 and the left second pinion 81 are meshed (coupled) with the left rear rack 3b8 and the left front rack 3b7 provided in the left widening portion 3b5, respectively, the left first pinion is provided. The left rear rack 3b8 and the left front rack 3b7 move in the contracting direction (upward in FIG. 7) of the left guide rail 3b with the rotation of the second pinion 80 and the left second pinion 81, and the left rear rack 3b8 and the left front rack 3b7 are attached. The entire left widened portion 3b5 also moves in the contraction direction of the left guide rail 3b (see FIG. 6).

  At this time, similarly to the right widening portion 3a5, the position where the left widening portion 3b5 reaches a state where the traveling roller 41a can be supported, that is, the end of the left widening portion 3b5 on the right guide rail 3a side is the right guide of the left guide rail 3b. At a position flush with the end of the rail 3a, the left widening contact portion 3b6 provided on the left widening portion 3b5 is configured to contact the left contacting portion 3b4 provided on the left guide rail 3b side. ing. When the left widening contact portion 3b6 comes into contact with the left contacting portion 3b4, the movement of the entire left widening portion 3b5 toward the right guide rail 3a (that is, the upward direction in FIG. 6) is restricted by the left contacting portion 3b4. Then, the end of the left widening portion 3b5 on the right guide rail 3a side is positioned so as not to protrude from the end of the left guide rail 3b on the right guide rail 3a side. Thereby, it is possible to prevent the left widened portion 3b5 from being moved (driven) in the contracting direction more than necessary, and to enable the traveling roller 41a to be appropriately supported by the left guide rail 3b and the left widened portion 3b5.

  In the guide rail 3 of the second embodiment, the widening drive mechanism 70 causes the right widening portion 3a5 of the right guide rail 3a and the left widening portion 3b5 of the left guide rail 3b to simultaneously and synchronously perform the widening drive or the contraction drive. It is configured. That is, when the excavator 4 or the like is detached from the guide rail 3, the right widening section 3a5 and the left widening section 3b5 are simultaneously driven by the widening drive mechanism 70, so that the right guide rail 3a and the left guide rail 3b are moved. The traveling roller 41a can be displaced while synchronizing the supportable state or the non-supportable state. Therefore, when the excavator 4 or the like is attached to or detached from the guide rail 3, an event such as one of the guide rails 3a and 3b coming into contact with the excavator 4 or the like is unlikely to occur, and the excavator 4 or the like is disassembled or deformed. It can be smoothly detached from the guide rail 3 without the need. As a result, it is possible to reduce the number of man-hours for the worker under the high-pressure environment in the caisson work room 2, thereby shortening the construction period and the labor cost.

  In each of the widened portions 3a5 and 3b5, in the normal state in which the traveling roller 41a can be supported and in the widened state by the widening drive mechanism 70, the ceiling 2a and the guide rails 3a, 3b, it is configured not to separate from the ceiling 2a or the guide rails 3a, 3b.

  Next, details of the excavator 4 in the second embodiment and a state where the excavator 4 is suspended on the guide rail 3 will be described with reference to FIGS. 8 and 9. FIG. 8 shows that the front shaft 41b1 of the excavator 4 of the second embodiment is located immediately below the right second pinion 77 and the left second pinion 81, and the rear shaft 41b2 is located at the right first pinion 76 and the left first pinion 76. It is a side view in the case of being in the position just under 1 pinion 80. FIG. 9 is a schematic front view showing a state where the excavator 4 of the second embodiment is suspended on the guide rail 3. In the traveling base 41 of the excavator 4 according to the second embodiment, a different part from the first embodiment is a front shaft 41b1 that is a traveling shaft 41b provided on a traveling roller 41a on a pair of left and right front wheels (the left side in FIG. 8). The right second pinion 77 and the left second pinion 81 move up and down with the up and down movement of the rear shaft 41b2 provided on the traveling roller 41a on the pair of right and left rear wheels (right side in FIG. 8). The point is that the right first pinion 76 and the left first pinion 80 move up and down with the up and down movement. In FIG. 9 (the same applies to FIGS. 10 and 11), the components 71 to 76 and 78 to 80 of the widening drive mechanism 70 are omitted for convenience of explanation.

  As shown in FIG. 8, a front insertion portion 41c1 through which the front shaft 41b1 is inserted, and a rear insertion portion 41c2 through which the rear shaft 41b2 is inserted, run on the traveling base 41 of the second embodiment. It is formed on each of the left and right side surfaces of the base 41. The front shaft 41b1 or the rear shaft 41b2 is inserted into the front insertion portion 41c1 or the rear insertion portion 41c2, respectively, and within the range of the shape of the front insertion portion 41c1 or the rear insertion portion 41c2 (the range from the lowered position to the raised position). ). Specifically, the front shaft 41b1 is configured to be vertically displaceable along the shape of the front insertion portion 41c1. The rear shaft 41b2 is configured to be vertically or horizontally displaceable along the shape of the rear insertion portion 41c2.

  Here, the right second pinion 77 and the left second pinion 81 of the widening drive mechanism 70 are configured to be able to abut (connect) above the front shaft 41b1, and are simultaneously displaced with the displacement of the front shaft 41b1. It is configured to be possible. In addition, the right first pinion 76 and the left first pinion 80 of the widening drive mechanism 70 are configured to be able to abut (connect) above the rear shaft 41b2, and simultaneously with the displacement of the rear shaft 41b2. It is configured to be displaceable.

  Specifically, the traveling base 41 of the excavator 4 reaches the positions of the right widening portion 3a5 and the left widening portion 3b5 on the guide rail 3, and the front shaft 41b1 is located immediately below the right second pinion 77 and the left second pinion 81. When the front shaft 41b1 is positioned, when the front shaft 41b1 is supported by the arm members 53 and 54 (see FIG. 3) of the lifter 5 described later, the position of the front shaft 41b1 falls within the range of the shape of the front insertion portion 41c1. To the ascending position, and the right second pinion 77 and the left second pinion 81 ascend accordingly. Then, the raised right second pinion 77 and left second pinion 81 mesh (connect) with the right front rack 3a7 of the right widening section 3a5 and the left front rack 3b7 of the left widening section 3b5 (both shown in FIG. 9), and The turning power of the second pinion 77 and the left second pinion 81 can be transmitted to the right front rack 3a7 and the left front rack 3b7.

  Further, the traveling base 41 of the excavator 4 reaches the positions of the right widened portion 3a5 and the left widened portion 3b5 in the guide rail 3, and the rear shaft 41b2 is located immediately below the right first pinion 76 and the left first pinion 80. In this case, when the rear shaft 41b2 is supported by the arm members 55 and 56 (see FIG. 3) of the lifter 5 described later, the position of the rear shaft 41b2 falls within the range of the shape of the rear insertion portion 41c2. The first pinion 76 and the left first pinion 80 rise from the position to the rising position. Then, the raised first right pinion 76 and left first pinion 80 mesh (connect) with the right rear rack 3a8 of the right widening section 3a5 and the left rear rack 3b8 of the left widening section 3b5 (both shown in FIG. 9). , The rotation power of the right first pinion 76 and the left first pinion 80 can be transmitted to the right rear rack 3a8 and the left rear rack 3b8.

  On the other hand, the traveling base 41 of the excavator 4 has not reached the positions of the right widening portion 3a5 and the left widening portion 3b5 in the guide rail 3, and the front shaft 41b1 is located immediately below the right second pinion 77 and the left second pinion 81. If not, or even if the traveling base 41 of the excavator 4 has reached the positions of the right widened portion 3a5 and the left widened portion 3b5 in the guide rail 3, the front shaft 41b1 is connected to each of the lifters 5 to be described later. When the front shaft 41b1 is not supported by the arm members 53 and 54 (see FIG. 3), the right second pinion 77 and the left second pinion 81 cannot be connected. As a result, the right second pinion 77 and the left second pinion 81 cannot be raised by the front shaft 41b1. Therefore, the right second pinion 77 and the left second pinion 81 do not engage (fit) with the right front rack 3a7 of the right widening section 3a5 and the left front rack 3b7 (see FIG. 9) of the left widening section 3b5. The turning power of the pinion 77 and the left second pinion 81 cannot be transmitted to the right front rack 3a7 and the left front rack 3b7.

  Further, the traveling base 41 of the excavator 4 has not reached the positions of the right widened portion 3a5 and the left widened portion 3b5 in the guide rail 3, and the rear shaft 41b2 is located immediately below the right first pinion 76 and the left first pinion 80. Is not located, or even if the traveling base 41 of the excavator 4 has reached the positions of the right widened portion 3a5 and the left widened portion 3b5 in the guide rail 3, the rear shaft 41b2 is connected to the lifter 5 to be described later. If the rear shaft 41b2 is not supported by the arm members 55, 56, the right first pinion 76 and the left first pinion 80 cannot be connected. As a result, the right first pinion 76 and the left first pinion 80 cannot be raised by the rear shaft 41b2. Therefore, the right second pinion 77 and the left second pinion 81 do not engage (fit) with the right front rack 3a7 of the right widening section 3a5 and the left front rack 3b7 (see FIG. 9) of the left widening section 3b5. The turning power of the pinion 77 and the left second pinion 81 cannot be transmitted to the right front rack 3a7 and the left front rack 3b7.

  Note that the right first pinion 76 and the right second pinion 77 and the left first pinion 80 and the left second pinion 81 of the widening drive mechanism 70 move the traveling base of the excavator 4 at any of the lowered position and the raised position. It is configured to be at a position where it cannot interfere with the traveling roller 41 and the traveling roller 41a. Specifically, the positions of the right first pinion 76 and the right second pinion 77, and the left first pinion 80 and the left second pinion 81 are always higher than the traveling roller 41a, the front shaft 41b1, and the rear shaft 41b2. It is arranged so that it becomes. Therefore, the traveling of the excavator 4 is not hindered by the right first pinion 76 and the right second pinion 77, and the left first pinion 80 and the left second pinion 81, so that the working efficiency in the caisson working chamber 2 is reduced. Can be prevented.

  Here, a method of attaching and detaching the excavator 4 from the guide rail 3 using the lifter 5 (attachment step) will be described with reference to FIGS. 10 and 11. FIG. 10A is a schematic front view showing a state in which the excavator 4 is suspended on the guide rail 3, and FIG. 10B is a diagram showing each arm member of the lifter 5 from the state of FIG. It is the schematic front view which showed the state which extended 53,54 (55,56) and supported the traveling shaft 41b1 (41b2) of the excavator 4. FIG. 11A is a schematic front view showing a state where the widening portions 3a5 and 3b5 of the guide rails 3a and 3b are widened by the widening driving mechanism 70 from the state of FIG. 10B. 11 (b) is a schematic front view showing a state in which the arm members 53, 54 (55, 56) of the lifter 5 are contracted from the state of FIG. It is.

  First, in the state of FIG. 10A, the traveling roller 41a is configured to be able to support the lower steels 3a3 and 3b3 at the positions where the widened portions 3a5 and 3b5 of the guide rails 3a and 3b are provided. ing. For this reason, each running roller 41a of the excavator 4 travels on each lower steel 3a3, 3b3 of each guide rail 3a, 3b (each widened portion 3a5, 3b5), and in the caisson working chamber 2 around the guide rail 3. The ground is excavated by a shovel part 45 (see FIG. 9). In this case, the traveling shaft 41b1 (the pinions 77, 81 (76, 80)) of the excavator 4 is located at the lowered position, but the racks 3a7, 3b7 (3a8) provided in the widened portions 3a5, 3b5. , 3b8) and the pinions 77, 81 (76, 80) of the widening drive mechanism 70 are provided at positions where they cannot interfere with the traveling roller 41a and the traveling shaft 41b of the excavator 4, so that the The traveling of the (running roller 41a) on each of the lower steels 3a3 and 3b3 is not hindered.

  Next, in the step of FIG. 10B, the excavator 4 travels from the state of FIG. 10A by the arm members 53, 54 (55, 56) of the lifter 5 located immediately below the widened portions 3a5, 3b5. The shaft 41b1 is supported from below and lifted from the lowered position to the raised position. At this time, when the traveling shaft 41b1 is displaced to the raised position, each of the pinions 77, 81 (76, 80) is also raised and meshes (couples) with each of the racks 3a7, 3b7, and each of the pinions 77, 81 (76, 80). 80) can be transmitted to each rack 3a7, 3b7.

  In the step of FIG. 11A, the pinions 77, 81 (76, 80) are rotated by the widening driving mechanism 70 (see FIG. 6) from the state of FIG. By displacing the racks 3a7, 3b7 (3a8, 3b8), the widened portions 3a5, 3b5 move in the widening direction, and the widths of the right guide rail 3a and the left guide rail 3b are widened. The width of the right guide rail 3a and the width of the left guide rail 3b of the widened portions 3a5 and 3b5 are widened unless the pinions 77 and 81 (76, 80) are rotated again in a state of meshing (coupling). It is configured to maintain the state.

  Then, as shown in FIG. 11B, by contracting the arm members 53, 54 (55, 56) of the lifter 5 from the state of FIG. 11A, the guide rail 3 (each widened portion in the widened state) is contracted. The excavator 4 can be removed from 3a5, 3b5). In this step, since the traveling shaft 41b can interfere with each of the widened portions 3a5 and 3b5, the length direction of the traveling shaft 41b is slightly inclined from the laying direction of the guide rail 3 by moving the lifter 5, The excavator 4 can be moved up and down without the traveling shaft 41b interfering with the widened portions 3a5 and 3b5.

  As described above, according to the guide rail 3 of the second embodiment, the widened portions 3a5, 3b5 are provided on the guide rails 3a, 3b, respectively, and the lower steels 3a3, 3b3 in the widened portions 3a5, 3b5 are provided. In a state in which the traveling roller 41a of the excavator 4 is supported, the widening portions 3a5 and 3b5 are widened in the width direction of the guide rail 3 by the widening drive mechanism 70, so that the excavator suspended on the guide rail 3 4 and other mechanical equipment are configured to be removable. With this configuration, in a state where the widened portions 3a5 and 35b are not widened, the excavator 4 and the like are allowed to work in the caisson work room 2 while the excavator 4 and the like are supported by the guide rails 3. When the excavator 4 and the like are attached to and detached from the guide rail 3, the widening portions 3 a 5 and 3 b 5 are widened by the widening drive mechanism 70 so that the excavator 4 and the like are attached to and detached from the guide rail 3 without being disassembled or deformed. Can be. In addition, the number of man-hours for the worker in the high-pressure environment in the caisson work room 2 can be reduced, so that the work period can be shortened and labor costs can be reduced.

  In addition, when the widening portions 3a5 and 3b5 are widened by the widening drive mechanism 70, unless the traveling shaft 41b of the excavator 4 is supported by the arm members 53 to 56 of the lifter 5, each of the widening drive mechanisms 70 is used. Even when the pinions 76, 77, 80, 81 are rotated, the power of the pinions 76, 77, 80, 81 is applied to the racks 3a7, 3a8, 3b7, 3b8 provided in the widened portions 3a5, 3b5. Is not transmitted, and the widening portions 3a5 and 3b5 are not driven to widen (power is not transmitted). With such a configuration, it is possible to prevent the excavator 4 or the like from dropping off the guide rail 3 in a state where the excavator 4 or the like is not supported by the lifter 5. Therefore, when the excavator 4 or the like is dropped from the guide rail 3, the work can be always performed while the excavator 4 or the like is supported by the lifter 5, and the excavator 4 or the like is prevented from falling and being damaged. can do.

  Furthermore, the position where each of the widened portions 3a5 and 3b5 reaches a state where the widened portions 3a5 and 3b5 can support the traveling roller 41a, that is, the end of each of the widened portions 3a5 and 3b5 is the other end of the guide rails 3a and 3b on the side of the other guide rail 3b and 3a. At the position flush with the parts, the widened contact parts 3a6, 3b6 provided on the widened parts 3a5, 3b5 abut against the contact parts 3a4, 3b4 provided on the guide rails 3a, 3b side. It is configured as follows. When the widened contact portions 3a6 and 3b6 come into contact with the contact portions 3a4 and 3b4, the whole of the widened portions 3a5 and 3b5 are moved toward the other guide rails 3b and 3a by the contact portions 3a4 and 3b4. Is regulated, and the other ends of the widened portions 3a5, 3b5 on the other side of the guide rails 3b, 3a are positioned so as not to protrude from the other end of the guide rails 3a, 3b on the other side of the guide rails 3b, 3a. This restricts the widened portions 3a5 and 3b5 from being moved (driven) in the reducing direction more than necessary, and the traveling roller 41a can be appropriately supported by the guide rails 3a and 3b and the widened portions 3a5 and 3b5. Can be

  When the excavator 4 or the like is detached from the guide rail 3, the right widening section 3a5 and the left widening section 3b5 are simultaneously driven by the widening drive mechanism 70, so that the right guide rail 3a and the left guide rail 3b are connected. The traveling roller 41a can be displaced while synchronizing the supportable state or the non-supportable state. Therefore, when the excavator 4 or the like is attached to or detached from the guide rail 3, an event such as one of the guide rails 3a and 3b coming into contact with the excavator 4 or the like is unlikely to occur, and the excavator 4 or the like is disassembled or deformed. It can be smoothly detached from the guide rail 3 without the need. As a result, it is possible to reduce the number of man-hours for the worker under the high-pressure environment in the caisson work room 2, thereby shortening the construction period and the labor cost.

  Further, the widening drive mechanism 70 is configured to be remotely operable by an operator in the control room 30 provided on the ground (ie, outside the caisson work room 2). Specifically, when the operator operates the controller 32 while checking the image on the monitor 31, the main gear 73 connected to the hydraulic pump 71 can be rotated in each direction (clockwise or counterclockwise). It is configured so that drive control can be performed. Therefore, it is possible to reduce the number of man-hours for the worker under the high-pressure environment in the caisson work room 2, and to shorten the construction period and the labor cost.

  As described above, the present invention has been described based on the embodiments. However, the present invention is not limited to the above-described embodiments, and various modifications and improvements can be easily made without departing from the spirit of the present invention. It can be inferred. For example, the numerical values given in the above embodiment are merely examples, and other numerical values can of course be adopted.

  In addition, it is of course possible to combine any of the configurations of the above-described embodiments with any of the configurations of the modifications described below. Further, it is of course possible to combine any one of the following modified examples with one or a plurality of other modified examples. In these cases, further effects due to the application of each configuration can be obtained. Hereinafter, the description will be made based on the component numbers used in the description of the embodiments, but it is naturally possible to substitute the same or similar component numbers in other embodiments.

<Modification 1>
In the above-described embodiment, the caterpillar 51 is adopted as a moving mechanism of the lifter 5 so as to be movable in the caisson working chamber 2. On the other hand, the lifter 5 may be configured to be movable by employing a plurality of wheels, driving feet, or the like.

<Modification 2>
In the above-described embodiment, the lifter 5 is equipped with the tilt detection device capable of detecting the tilt of the lifter 5 with respect to the horizontal direction. On the other hand, the excavator 4 is equipped with an inclination detecting device capable of detecting the inclination of the excavator 4 with respect to the horizontal direction, and the arm members 53 to 56 of the lifter 5 are mounted while considering the inclination of the excavator 4. You may comprise so that drive control may be carried out.

<Modification 3>
In the above embodiment, the surveillance camera is provided in the caisson work room 2 and the excavator 4 and the lifter 5 are driven and controlled with reference to the camera image and the like. On the other hand, a camera may be mounted on the excavator 4 or the lifter 5, and the driving of the excavator 4, the lifter 5, or the like may be controlled with reference to the video. In particular, a camera is mounted on each of the grips 53a to 56a provided on each of the arm members 53 to 56 of the lifter 5, and the position of the traveling shaft 41b of the excavator 4 is checked with the camera, and each of the grips 53a to 56a is checked. May be configured to grip (hold) the traveling shaft 41b.

<Modification 4>
In the above embodiment, when the excavator 4 is carried out from the caisson work room 2, the lifter 5 is used to carry it out. On the other hand, when the excavator 4 is carried into the caisson work room 2, the excavator 4 may be carried using the lifter 5. In this case, the excavator 4 is suspended by the wire 21 while holding the traveling shaft 41b of the excavator 4 by the arm members 53 to 56.

<Modification 5>
In the above embodiment, the excavator 4 is configured to be supported at four points by the four arm members 53 to 56. On the other hand, the excavator 4 may be configured to be supported by at least three support mechanisms. Further, the excavator 4 may be configured to be supported by five or more support mechanisms.

<Modification 6>
In the above embodiment, the case where the excavator 4 is carried out from the caisson working room 2 using the lifter 5 has been described. On the other hand, the lifter 5 may be used to carry out or carry in mechanical equipment used in the caisson work chamber 2 and having at least the entire length longer than the diameter of the collection shaft 14. .

<Variation 7>
In the above-described embodiment, a drive instruction is output to each of the arm members 53 to 56 so that each of the arm members 53 to 56 can be independently driven to expand and contract. On the other hand, while detecting the inclination of the lifter 5 with the inclination detecting device, at least two arm members 53 to 56 may be extended and contracted while being synchronized with one driving instruction. Specifically, for example, the right front arm member 53 and the right rear arm member 55 are extended while being synchronized with each other by a right extension instruction, and the right rear arm member 55 and the left rear arm are extended by a rear contraction instruction. The members 56 may be configured to contract while being synchronized with each other. Thereby, the operability of the lifter 5 can be improved. Note that “tune” refers to a case where the grip portions 53a to 56a are driven while the height positions are the same or substantially the same, or a case where the cylinders 53b to 56b are driven while the expansion and contraction lengths are the same or substantially the same. Is exemplified.

<Modification 8>
In the above-described embodiment, the traveling shaft 41b of the excavator 4 is configured to be gripped by the gripping portions 53a to 56a. On the other hand, it may be configured to detect whether or not the traveling shaft 41b can be gripped by the gripping portions 53a to 56a and output the detection result to the monitor 31 and the controller 32.

<Modification 9>
In the above-described embodiment, the traveling shaft 41b of the excavator 4 is configured to be gripped by the gripping portions 53a to 56a of the arm members 53 to 56. On the other hand, another portion of the excavator 4 other than the traveling shaft 41b may be supported by the arm members 53 to 56. In this case, the excavator 4 may be supported by a structure that easily supports a predetermined portion of the excavator 4 (for example, a surface portion for supporting the surface), instead of the configuration like the grip portions 53a to 56a. Good.

<Variation 10>
In the above embodiment, the widening portions 3a5 and 3b5 of the guide rails 3a and 3b are configured to be driven by one widening driving mechanism 70, respectively. On the other hand, an individual widening drive mechanism may be provided for each of the widening portions 3a5 and 3b5 so that the widening portions 3a5 and 3b5 can be individually driven. In this case, similarly to the widening drive mechanism 70, the individual widening drive mechanism is configured to be remotely operable, thereby reducing the number of man-hours for the worker in a high-pressure environment in the caisson work room 2, shortening the construction period and reducing labor costs. Can be reduced.

<Modification 11>
In the above embodiment, the power of the hydraulic pump 71 of the widening drive mechanism 70 is transmitted to the respective pinions 76, 77, 80, 81 by the respective rotary shafts 72, 75, 79 and the respective gears 73, 74, 78. On the other hand, the power of the hydraulic pump 71 of the widening drive mechanism 70 is transmitted to the pinions 76, 77, 80, 81 by another mechanism (cam, sprocket, roller chain or / and cylinder). Is also good.

<Modification 12>
In the above embodiment, the power from the hydraulic pump 71 of the widening drive mechanism 70 is transmitted to the pinions 76, 77, 80, 81 using the main gear 73, the right gear 74, and the left gear 78 of the spur gear. I was On the other hand, the power from the hydraulic pump 71 of the widening drive mechanism 70 is transmitted to each of the gears 73, 74, 78 by using an internal gear, a helical gear, a bevel gear, a bevel gear, a crown gear, a worm gear, and the like. You may comprise so that it may transmit to the pinion 76,77,80,81.

<Modification 13>
In the above-described embodiment, when the widened portions 3a5 and 3b5 are driven in the reduction direction, the widened contact portions 3a6 and 3b6 of the widened portions 3a5 and 3b5 having a convex shape when viewed from above are used as the contact portions of the guide rails 3a and 3b. By contacting the contact portions 3a4 and 3b4, the widened portions 3a5 and 3b5 are restricted from being moved (driven) in the reduction direction more than necessary. On the other hand, when the widened portions 3a5 and 3b5 are driven in the contraction direction, the widened portions 3a5 and 3b5 are driven in the reducing direction, and the widened portions 3a5 and 3b5 are positioned so that their side ends are flush with the side ends of the other guide rails 3b and 3a. Any shape may be used as long as the outer edge of any of the portions 3a5, 3b5 is in contact with the outer edge of each of the guide rails 3a, 3b and the driving of each of the widened portions 3a5, 3b5 in the reduction direction is regulated. It may be shaped.

<Modification 14>
In the above embodiment, the rotational force of each gear 73 and the like is converted into a linear motion by a rack and pinion including each of the pinions 76, 77, 80, 81 and each of the racks 3a7, 3a8, 3b7, 3b8. Thus, the widened portions 3a5 and 3b5 are displaced in the width direction. On the other hand, another mechanism (cam, sprocket, roller chain or / and cylinder) or the like converts the rotational force of each gear 73 and the like into a linear motion to displace the widened portions 3a5 and 3b5 in the width direction. May be configured.

<Modification 15>
In the above-described embodiment, the widening drive mechanism 70 is integrated (connected) to the guide rail 3. On the other hand, the widening drive mechanism 70 may be configured separately from the guide rail 3 so as to be detachably connected thereto.

<Modification 16>
In the above embodiment, the widening portions 3a5 and 3b5 are provided on the guide rails 3a and 3b, respectively, and the widening portions 3a5 and 3b5 are configured to be capable of widening driving. On the other hand, the excavator 4 may be configured to be detachable from the guide rail 3 by providing a single widened portion only on one of the guide rails 3a and 3b and driving the single widened portion to widen.

<Modification 17>
In the above embodiment, the mechanical equipment such as the excavator 4 is suspended and supported by the two guardrails 3a and 3b. On the other hand, the gripping part of the mechanical equipment such as the excavator 4 may be supported on one single rail so that the excavator 4 and the like can travel on the single rail. In this case, the excavator 4 and the like may be configured to be removable from the slid predetermined portion by configuring the predetermined portion of the single rail to be slidable in a direction perpendicular to the laying direction.

<Modification 18>
In the above embodiment, the case where the excavator 4 is removed from the guide rail 3 has been described. On the other hand, even when mechanical equipment such as an excavator 4 is mounted on the guide rail 3, a similar configuration may be used to mount the excavator 4 on the guide rail.

<Modification 19>
In the above embodiment, the widening drive mechanism 70 and the like are provided inside the guide rails 3a and 3b, and a force is applied to the widening portions 3a5 and 3b5 in the pushing direction to drive the widening portions 3a5 and 3b5 in the widening direction. I was On the other hand, one or a plurality of outside widening driving mechanisms are provided outside each of the guide rails 3a, 3b, and the widening sections 3a5, 3b5 are pulled outward to drive the widening sections 3a5, 3b5 in the widening direction. It may be configured as follows. With this configuration, it is possible to design the guide rail 3 and the outer widening drive mechanism without considering the interference between the traveling roller 41a of the excavator 4 and the outer widening drive mechanism. The degree of freedom in designing the outer widening drive mechanism is improved.

<Variation 20>
In the above embodiment, the widening portions 3a5 and 3b5 of the guide rails 3a and 3b are widened in the horizontal direction, and the excavator 4 is configured to be attached to and detached from the guide rails 3. On the other hand, the lower steels 3a3 and 3b3 of the predetermined portions of the guide rails 3a and 3b are used as rotation support portions that can be driven to rotate vertically downward about the connection portions with the vertical steels 3a2 and 3b2. Constitute. When the excavator 4 is to be able to run on the guide rail 3, the excavator 4 is attached to and detached from the guide rail 3 while maintaining the rotation support portion in a horizontal state. In this case, the excavator 4 may be configured to be detachable from the guide rail 3 by rotating the rotation support portion vertically downward about the connection portion as the rotation center.

  The “right front grip 53a, the left front grip 54a, the right rear grip 55a and / or the left rear grip 56a” described in the above embodiment corresponds to the “support mechanism” in the claims, and The “caterpillar 51” described in the above corresponds to the “moving mechanism” in the claims, and the “monitor 31 and controller 32” described in the above embodiment corresponds to the “control device” in the claims. The “lifter 5” described in the embodiment corresponds to the “remote working device” in the claims, and the “excavator 4, lighting equipment and / or surveillance camera” described in the above embodiment is described in the “machine” in the claims. The "tilt mechanism" according to the embodiment corresponds to "the right front arm member 53, the left front arm member 54, the right rear arm member 55 and / or the left rear arm member 56" described in the above embodiment. Above embodiment The described “tilt detection device” corresponds to “tilt mode output means” in the claims, and the “lifter communication unit” described in the above embodiment corresponds to “reception means” in the claims. The “lifter control unit and / or lifter drive unit 60” described in the embodiment corresponds to the “drive control unit” in the claims, and the “right front arm member 53 and the left front arm member 54” described in the above embodiment. Alternatively, the "right rear arm member 55 and the left rear arm member 56" correspond to the "back and forth tilting means" in the claims, and the "right front arm member 53 and the right rear arm member 55" described in the above embodiment. Or, the left front arm member 54 and the left rear arm member 56 correspond to the “right-and-left tilting means” in the claims, and the “tilt detection device” described in the above embodiment corresponds to the “tilt in the claims”. Detection means ” In response, the “lifter communication unit” described in the embodiment corresponds to the “tilt output unit” in the claims, and the “right front cylinder 53b, left front cylinder 54b, right rear cylinder 55b, and / or Alternatively, the “left rear cylinder 56b” corresponds to the “movable mechanism” in the claims, and the “configuration for independently driving each of the arm members 53 to 56” described in the above embodiment is referred to as “independent” in the claims. The "configuration for driving at least two or more of the arm members 53 to 56 of the respective arm members 53 to 56 in synchronization with each other" according to the above embodiment corresponds to the "tuning driving means". The “traveling shaft 41b” described in the above embodiment corresponds to the “supported portion” in the claims, and the “cameras provided in each of the gripping portions 53a to 56a” described in the above embodiment. The "recovery shaft 14" described in the above embodiment corresponds to the "supported portion determination means" in the claims, and the "wire 21" described in the above embodiment corresponds to the "shaft" in the claims. Corresponds to the “suspension means” in the claims, the “crane 20” in the above embodiment corresponds to the “elevating device” in the claims, and the “controller 32” in the above embodiment The "monitor 31" described in the above embodiment corresponds to the "operating means" in the claims, and the "hook 22" described in the above embodiment corresponds to the "display device" in the claims. The "hook mounting portion" described in the above embodiment corresponds to the "mounting portion" in the claims, and the "ceiling portion 2a" described in the above embodiment claims Corresponding to the “ceiling part” in the range of “Guide rail 3” corresponds to “traveling rail” in the claims, and “traveling roller 41a” described in the embodiment corresponds to “traveling means” in the claim, and described in the embodiment. The “excavation base 43” corresponds to the “body portion” of the claims, and the “arm portion 44 and the bucket portion 45” described in the embodiment correspond to the “excavation mechanism” of the claims. The “ground or excavated surface” described in the embodiment corresponds to the “ground surface” in the claims, and the “recovery entrance / exit unit 15” described in the embodiment corresponds to the “communication port” in the claims. The "collection detection device" described in the above embodiment corresponds to "mechanical equipment detection means" in the claims.

  Further, the “upper right steel 3a1 and the upper left steel 3b1” described in the above embodiment correspond to the “attachment part” in the claims, and the “lower right steel 3a3 and the lower left steel 3b3” described in the above embodiment are claimed. The "right widened portion 3a5 and / or left widened portion 3b5" described in the above embodiment corresponds to the "deformed portion" of the claims, and corresponds to the "supporting portion" described in the above embodiment. The “widening drive mechanism 70” corresponds to the “deformation drive unit” in the claims, and the “right guide rail 3a or the left guide rail 3b” described in the above embodiment is the “first rail portion” in the claims. The “left guide rail 3b or right guide rail 3a” described in the above embodiment corresponds to the “second rail portion” of the claims, and the “right first pinion 76, Right second pinion 77, left first pinion 80 The left and right second pinions 81, and the right front rack 3a7, the right rear rack 3a8, the left front rack 3b7, and the left rear rack 3b8 correspond to the "widening drive means" in the claims, and are described in the above-described embodiment. "Simultaneously widening (contracting) driving of the widened portion 3a5 and the left widened portion 3b5" corresponds to "simultaneous driving means" in the claims, and the "right widened portion 3a5 and left widened portion 3b5" described in the above embodiment. Driving in the contraction direction ”corresponds to the“ reduction driving unit ”in the claims, and the“ right widening contact portion 3a6 and the left widening contact portion 3b6 ”described in the above embodiment are described in the claims. The "right contact portion 3a4 and the left contact portion 3b4" described in the above embodiment correspond to the "regulating portion" of the claims, and the "front side" described in the above embodiment. Shaft 41b1 and rear shaft 41b , And the front-side insertion portion 41c1 and the rear-side insertion portion 41c2 correspond to the “drivable state displacement unit” in the claims, and the “widening drive mechanism 70” described in the above embodiment can be remotely operated from the control room 30. The “excellent configuration” corresponds to “remote control means” in the claims, and the “excavator 4” in the above embodiment corresponds to “machine equipment” in the claims, and the “excavator 4” in the above embodiment The right front arm member 53, the left front arm member 54, the right rear arm member 55, and the left rear arm member 56 correspond to the "support mechanism" in the claims, and the "caterpillar 51" described in the above embodiment. Corresponds to the “moving mechanism” in the claims, and the “lifter 5” described in the above embodiment corresponds to the “remote working device” in the claims.

DESCRIPTION OF SYMBOLS 1 Caisson 2 Caisson work room 2a Ceiling part 3 Guide rail 3a Right guide rail 3a3 Right lower steel 3a4 Right contact part 3a5 Right widening part 3a6 Right widening contact part 3a7 Right front rack 3a8 Right rear rack 3b Left guide rail 3b3 Left lower steel 3b4 Left contact part 3b5 Left widening part 3b6 Left widening contact part 3b7 Left front rack 3b8 Left rear rack 4 Excavator 5 Lifter 13 Recovery shaft 20 Crane 30 Control room 41b Traveling shaft 51 Caterpillar 53 Right front arm member 54 Left front arm member 55 Right rear arm member 56 Left rear arm member 70 Widening drive mechanism 76 Right first pinion 77 Right second pinion 80 Left first pinion 81 Left second pinion

Claims (9)

In the guide rail provided on the ceiling in the caisson work room,
An attachment portion attached to the ceiling portion,
A support portion extending from the mounting portion and capable of supporting mechanical equipment used in the caisson work chamber;
Provided at least in a predetermined portion of the support portion, a supportable state capable of supporting the mechanical equipment, and a deformable portion capable of deforming the mechanical equipment to an unsupportable state in which the mechanical equipment cannot be supported,
A guide rail, comprising: a deformable driving means capable of driving the deformable portion to the supportable state or the unsupportable state. A first rail section provided on the ceiling section,
A second rail portion provided on the ceiling portion in a pair with the first rail portion,
The deformation driving means,
Widening driving means for driving the deformable portion in a direction in which the width of the first rail portion and the second rail portion increases in the predetermined portion to change the supportable state to the unsupportable state; The guide rail according to claim 1, wherein: The deforming part is
A first deformed portion provided on the first rail portion;
A second deformation portion provided on the second rail portion,
The deformation driving means,
The guide rail according to claim 2, further comprising: a simultaneous driving unit that simultaneously drives the first deformed portion and the second deformed portion. A contact portion that contacts the deformable portion,
The deformation driving means,
Reduction driving means for driving the deformable portion in a direction in which the width of the first rail portion and the second rail portion is reduced to change the supportable state to the supportable state,
The deforming part is
When the deformable portion is driven to widen by the widening driving means, a separating portion separated from the contact portion is provided,
The contact portion,
When the deformable portion is brought into the supportable state by the reduction driving means, the restricting portion contacts the separation portion, and regulates driving of the deformation portion by the reduction driving means. The guide rail according to claim 2 or 3, wherein the guide rail is provided. The deforming part is
2. A driving state changing means which can be displaced into a drivable state drivable by the deformation driving means and a drivable state not drivable by the deformation driving means. 4. The guide rail according to any of 4. The drivable state displacement means includes:
The guide rail according to claim 5, wherein when the mechanical equipment is supported from a lower side, the guide rail is displaced from the non-driving state to the drivable state. The remote control means for driving the deformation driving means based on a driving instruction from a control device provided outside the caisson work chamber, The remote control means according to any one of claims 1 to 6, wherein Guide rail. A method for attaching and detaching mechanical equipment to and from a guide rail according to any one of claims 1 to 7,
A remote working device comprising: a support mechanism capable of supporting the mechanical equipment used in the caisson work chamber; and a moving mechanism movable in the caisson work chamber with the mechanical equipment supported by the support mechanism. Is configured to be remotely operable based on a drive instruction from a control device provided outside the caisson work chamber,
The machine equipment is attached to and detached from the guide rail by driving the deformation unit by the deformation drive unit while the machine equipment is supported by the remote working device. Desorption method. 9. The drivable state displacement means is displaced from the non-drivable state to the drivable state when the mechanical equipment is supported by the support mechanism of the remote working device. How to attach and detach mechanical equipment to and from the guide rail.