JPH1018799A - Working truck for pipeline laying work - Google Patents

Abstract

PROBLEM TO BE SOLVED: To secure work space for workers and conveying space so as to improve workability of piping by forming passages common to trucks fixed in pipeline laying work positions on rails in a pit of a shield tunnel. SOLUTION: In order to lay a conduit to be a pipeline in a shield tunnel 1, a transport truck for carry-in and transportation of equipment and materials, and rails 9 for working A-D trucks are temporarily provided. A lower part of a frame 51 to be a constituent part of the B-truck 5 is provided with a passage part 51A formed of a plate-like step leaving the passage space of the transport truck on one side in a cross direction. Also in the A-, C-, D-trucks, passages of the same height and size are formed in corresponding positions to the passage part 51A of the B-truck 5. A continuous flat passage is thereby formed for a worker to secure walk space so as to improve workability.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a work trolley for laying pipes, and more particularly, to a trolley used for laying a pipe serving as a pipeline in a tunnel such as a shield tunnel.

[0002]

2. Description of the Related Art Transport pipelines, which form the backbone of the city gas business, etc., are generally buried under public roads, but depending on the installation environment, they may be installed in tunnels provided at crossings such as rivers and ports. In some cases, pipes that are used as pipelines are laid,
In addition, there are cases where different types of pipelines, such as gas, electricity, and telephone lines, are laid in a common groove body (tunnel) that is also used in the case of piping in a common groove.

[0003] Such a pipe in a tunnel has been disclosed in, for example, JP-A-6-101783 and JP-A-6-101783.
A piping method described in, for example, Japanese Patent Application Laid-Open No. 265049 is known.
No. 208646 and Japanese Patent Application Laid-Open No. 7-208647 propose a pipe laying system. As seen in these prior arts, plumbing in tunnels is a work that is performed in a narrow space inside the tunnel with limited communication with the ground. For this purpose, rails are temporarily installed in the tunnel so that a truck for construction can be used, and a method of laying pipes using trucks is adopted.

[0004] In many cases, a plurality of trolleys are used in a tunnel depending on the work content. For example, in addition to a truck for carrying in and transporting materials and equipment, a truck for temporarily placing a carried-in conduit at a predetermined position in a tunnel, and a case where a temporarily placed conduit is aligned with an existing conduit (beveling groove) After that, there is a welding machine for welding the joint portion between the conduits and a bogie provided with the auxiliary equipment. Among the above-mentioned trolleys, the trolleys used for temporarily placing the conduits and welding the temporarily placed conduits to the existing conduits are located in the vicinity of adjacent conduits, and the above-mentioned temporary placements are made by workers. Work and welding work are performed.

[0005]

When the carts are adjacent to each other, the worker stands up in accordance with the progress of the work or the change of the work position. If the space occupied by the cart in the limited space is large, it becomes impossible to secure a walking space for the worker. Also, if the space cannot be secured as described above, the materials and equipment used on one side of the bogie cannot be used on the other side, so that the materials cannot be reused in particular, and the operation cost becomes high. Would.

Accordingly, an object of the present invention is to solve the above-mentioned problems in the conventional construction work trolley, and when working related trolleys next to each other in the work content, a worker's walking space and transportation of equipment and materials are required. An object of the present invention is to provide a plumbing work cart having a configuration capable of securing space and improving plumbing workability.

[0007]

In order to achieve this object, the invention according to claim 1 is directed to a work vehicle used for laying a pipeline serving as a pipeline in a sinus tunnel such as a shield tunnel. A bogie located at a position where each operation for laying the conduit on the rail laid in the road is performed has a common passage portion.

According to a second aspect of the present invention, in the work truck for laying pipes according to the first aspect, the passage portion is formed at a common position in a direction perpendicular to the moving direction of the truck. Features.

According to a third aspect of the present invention, in the work vehicle for pipe laying work according to the first aspect, the passage portion is constituted by steps provided in the bogie main body.

According to a fourth aspect of the present invention, in the work truck for laying pipes according to the first aspect, the passage portion is provided with a device for performing at least the pipes in the pipe laying work adjacent to each other. It is characterized by being provided in.

[0011]

According to the first to third aspects of the present invention, since the passage is formed in the bogie, the passage serves as a walking space for the worker and a space for transporting the equipment in the cave.

According to the fourth aspect of the present invention, since a passage for working on adjacent conduits is provided on a carriage fixed at a position closest to the conduits, the walking of the worker and the equipment and materials are performed. It is possible to eliminate the operation of going up and down and straddling the frame that constitutes the bogie during transportation.

[0013]

Embodiments of the present invention will be described below with reference to the drawings. First, a description will be given of a pipe installation in a shield in which a work vehicle for pipe laying work according to the present invention is used. FIG. 1 shows a conceptual diagram of the construction of pipes in a shield, in which a pipe 2 serving as a pipeline is laid inside a shield tunnel 1 (hereinafter referred to as a shield). In this embodiment, the shield 1 has a length of 3650 mm. This figure shows an example in which a common groove body having an inner diameter is used, and a gas pipeline pipeline is laid in a lower half thereof, and another pipeline is laid in an upper half thereof. The conduit 2 is a conduit of a required length (eg,
9m / piece) are arranged at a predetermined laying position in the shield 1,
It is formed by welding and connecting to the axis of an existing conduit.

At the time of the pipe laying work, a transport trolley 3 is prepared for carrying in and transporting the necessary equipment and materials, and FIG.
, An A truck 4, a B truck 5 shown in FIG. 4, a C truck 6 shown in FIG. 5, and a D truck 7 shown in FIG. In order to allow these transport vehicles 3 and the work vehicles 4 to 7 for pipe laying construction to run in the shield 1, rails 8 for the transport vehicles and rails 9 for the construction vehicles are provided in the shield 1 temporarily. Is done.

The rail 8 for the carriage 3 has a sleeper 8 which is laid on the lower half of the shield 1 as shown in FIG.
a, a pair of left and right rails 8b on the sleeper 8a
The rails 8 are provided in the shield 1 when the shield 1 is laid.

As shown in FIG. 8, the rail 9 for the construction trolley is provided with mounting brackets (a lower bracket portion 9a and an upper bracket portion 9b) on opposing side walls of the inner wall of the segment at the lower half portion inside the shield 1. A pair of right and left rails 9c are installed via the rails. The rails 9 are to be temporarily installed in the shield 1 at the time of pipe laying work.

In the present invention, as the pipe laying work,
In the case of the embodiment shown in FIG. 1, I, II, III,
The work method is divided into the processes of IV, V, VI, and VII, and the work of each process is successively carried out in the shield 1 according to the work time schedule of night work and day work shown in FIG. . In the state shown in FIG. 1, L = 362 m in the shield 1 from the laying start point L position.
In the section leading to the point, the work of each of the above processes I to VII is shown as being combined and carried out. In the embodiment shown in FIG. 1, the construction length per day is set to 45 m. The construction length and work content for each process will be described below.

I: Surveying Step This step is an operation for instructing the height of a track for enabling the work truck for pipe laying work to run inside the shield 1. Two workers (surveyors) calculate the appropriate rail height and perform the work of marking the mounting positions of the bracket lower part 9a and the bracket upper part 9b, which are rail mounting brackets, on the segment. In this step, in FIG.
The work is performed during the daytime construction time shown in FIG. 2 with the construction length being 45 m reaching the 362 m point.

II: Rail Installation Step In this step, a work for temporarily installing a rail 9 for a construction vehicle is performed at a position marked by the surveying step. In this work, the required material is carried to the construction position from the temporary placing point of the track material (around L = 242 m), and the following work is performed according to the nighttime construction time shown in FIG. . Bracket installation work In this work, in FIG. 1, a construction length is set to 45 m from L = 272 m to 317 m, and a bracket lower part 9 a serving as a mounting bracket for the rail 9 is provided in the shield 1 in this section.
The upper part 9b of the bracket is mounted. . Rail installation work In FIG. 1, the work length is 45 m from L = 249 m to 294 m in FIG. 1, and the rail 9 c is installed in the shield 1 in this section with respect to the bracket upper part 9 b which has already been mounted earlier. Perform the installation work. This rail 9c
Is to be carried out using the A truck 4 moving to the point L = 229 m to 249 m, and the sling is moved from the temporary placing point of the track material to the rail 9c temporarily placed on the deck of the A truck. , The rail 9c is lifted by the crane mounted on the A-cart 4, moved to a predetermined installation position, and suspended and installed. In this case,
Since four sets of brackets (20 m) in the front half of the bracket installation section were installed the previous day, the rails 9c can be installed in the front half immediately after the start of work, and five sets (25m) of the rear half are brackets 9a. , 9b and then the rails are installed.

III: Pipe Temporary Placement Step In this step, a pipe 2 of a required length that is carried in by a transport trolley 3 (battery trolley) from the opening of the shield 1 is used.
(9 m / piece · 5 pieces) are received one by one using the B truck 5, transported to a predetermined laying point, arranged, and temporarily placed on the nozzle 10. In this step, in FIG. 1, the construction length is 45 m from L = 184 m to 229 m, and the delivery of the conduit 2 is L = 229 to 249 m (20 m).
m), and the work in this step is performed at nighttime construction time shown in FIG.

IV: Centering / Welding Step In this step, the five temporarily placed conduits 2 are
Using the C carriage 6, the work is performed by centering (beveling) on the axis of the existing pipe, which has already been laid, and welding the joint. This step is shown in FIG.
L = 184 m to 229 m at the same point as in step III above
45m to the point is the construction length, and the next work,
It is constructed according to the daytime construction time shown in FIG. . Centering work (using B bogie) In this work, the bogie 5 is used, and the temporarily placed conduit 2 is lifted by the hoisting device of the B bogie 5 to adjust the vertical direction and the horizontal direction. Work to match. . Welding work (using C cart) At this work, the C cart 6 was used, and the power supplied to the C cart was turned on, and the welding equipment such as guide rails, welding heads, tools, etc. were taken out of the C cart and aligned. Conduit 2
Welding of the joints.

V: Inspection / Coating Step In this step, a non-destructive inspection of a welded portion is performed on the five welded pipes 2 using a C truck 6 and the welded portion is coated. Perform the work of mounting. In this step, in FIG. 1, the length of 45 m from L = 136 m to 181 m is set as the construction length, and the following work is performed according to the nighttime construction time shown in FIG. 2. . Inspection work In this work, an inside appearance of the welded portion of the conduit 2 is inspected by a camera mounted on the inspection equipment provided on the C carriage 6, and an X-ray source cable is passed through the inside of the pipe to make an X-ray outside the pipe. Conduct a line inspection and develop the X-ray film to determine the presence or absence of welding defects. . Coating work This work is to coat the weld.

VI: Lay-down / rail removal step This step consists of five conduits 2 connected through the above steps.
On the other hand, the temporary support 11 receiving the connecting conduit 2 is removed, the conduit 2 is laid down, and then the rail equipment for the construction bogie temporarily installed in the shield 1 is removed, and this is replaced with the next construction section. It carries out the work of transporting to the temporary storage point, and uses the D bogie 7 to perform the work according to the nighttime construction time shown in FIG. . Conduit laydown In the conduit laydown, a first laydown with a construction length of 22 m from L = 69 m to 91 m in FIG. 1 and a second laydown with a construction length of 23 m from L = 91 m to 114 m following this are performed. . In the first laydown, after the connection conduit 2 received by the temporary support 11a at the point of L = 42m is lifted by the crane of the D bogie 7, the previous temporary support 11a is removed and moved to the position of the first temporary support 11b. And the operation of suspending the conduit 2. In the second laydown, the connection conduit 2 received by the first temporary support 11b is lifted by the crane of the D bogie 7, and the first support 11b is removed and moved to the position of the second temporary support 11c. Perform the work of hanging. . Removal work of rail equipment This work is 45 m from the point L = 20 m in FIG.
The brackets and metal fittings on which the rails 9 were temporarily installed are removed in the section of, and the rails are removed in the section of 45 m from L = 37 m to 82 m. The rail material removed by this operation is packed in a container, and is transported to a temporary placement point in the next construction section using the D bogie 7.

VII. Rail removal process for carriages In this step, rails 8a provided in shield 1 as rails 8 for carriages 3 and rails 8b attached to the rails 8a are removed using A carriages 4. I do. This process is performed in accordance with the nighttime construction time shown in FIG. 2 for the section 28 m from the point L = 229 m in FIG. 1, and for the section 33 m from the point L = 251 to 284 m in FIG.
It will be constructed at the daytime construction time shown in the table below.

FIG. 3 and subsequent figures show details of the work truck for pipe laying work according to the embodiment of the present invention. First, A
The cart will be described with reference to FIG.
As shown in (1), (2), and (3) in FIG. 3, the A-cart 4 is equipped with a crane 42 at one upper end of a frame 41 framed in a gate shape. This crane 42 is an electric hoist 4 having a take-up drum 43 at the end of a jib arm.
4 and a chain hoist 46 wound by a cable reel 45. The rail rail 9c to be installed and the sleeper to be removed at the time of the rail setting operation of the II step and the rail removing operation of the VII step. 8a can be lifted, moved, and hung. Also, the height of the A-cart 4, that is, the length of the frame 41 framed in a gate shape,
The carriage 3 is configured to have a height that allows it to pass sufficiently even if the conduit is loaded. The crane 42 mounted on the A truck 4
The base end 47 of the jib arm is pivotally supported so as to be rotatable about a vertical axis because lateral movement is required in the shield 1. Further, depending on a use condition, the rails and sleepers lifted may be shielded.
The jib arm is configured to be able to bend in two stages at an intermediate position 48 in the longitudinal direction and a position 49 near the front end because it is necessary to enable 90-degree rotation and 180-degree rotation within the jib arm.

In the lower part of the frame 41, which is a component of the A truck 4, a passage portion 41A made of a flat plate-like step is provided on one side in the vehicle width direction corresponding to a direction perpendicular to the traveling direction. The passage portion 41A is provided at a position (H) below the inner bottom of the shield 1 at a lower portion of the portal-shaped frame 41 arranged at intervals in the vehicle width direction that allows turning of the jib arm, It is installed in a state protruding toward the center of the shield 1 (see FIGS. 3 (1) and 3 (3)), leaving a width of a space that allows the carriage 3 to pass.

As shown in (1), (2) and (3) of FIG. 4, the bogie 5 is composed of a pair of front and rear frames 51 framed in a gate shape. And a hoisting device 54 provided with a chain block 53 which is wound on a cable reel 52 at an upper portion thereof. Then, as shown in FIG. 4A, when the chain block 53 is wound around the conduit 2 so as to be detoured, and the cable reel 52 is operated to perform the hoisting operation, the conduit 2 is lifted, moved, and suspended. It is a configuration that can be done.

In the lower part of the frame 51, which is a component of the bogie 5, a passage portion 51A made of a flat plate-like step is provided on one side in the vehicle width direction corresponding to a direction perpendicular to the traveling direction. The passage portion 51A is provided on the same side as the passage portion 41A provided on the A truck 4 in the vehicle width direction of the B truck and at the same height (height in the drawing as a symbol H). The passage portion 51A is formed to have the same width as the passage portion 41A of the A truck 41 (width indicated by a reference symbol W in the drawing), and a moving wheel of the B truck 5 is attached to an end thereof. The B bogie 5 centers the conduits 2 by temporarily placing the conduits 2 and lifting the conduits 2 from the temporarily placed state (groove alignment).
And is used so that it can be suspended for each of the opposed conduits. For this reason, since the B bogie 5 is often combined in a front-rear pair, the sizes (dimensions H and W in the figure) of the passage portion 51A in the height direction and the width direction are matched. Further, the passage portion 51A
Are provided at the front end and the rear end, respectively, of a flat scaffolding step 51B that is bridged between the opposing passage portions 51A, and is superimposed when the B bogies 5 are adjacent to each other. . As a result, as shown in FIG.
When located at adjacent positions, the passage portion 51A is formed as a passage having the same height and the same size,
A continuous flat passage can be provided with the scaffolding step 51B in the middle.

As shown in FIGS. 5 (1), (2) and (3), the C truck 6 has a frame 61 formed horizontally, and on this horizontal frame 61, a power supply equipment 62 and a welding equipment A cylinder 63 and a cable reel 64 are provided. Although not shown, the C carriage includes a guide rail, an inner clamp for clamping and setting a pipe in a conduit centering process, a welding head, a remote operation box, tools, etc. for welding equipment, and an inspection equipment. It is equipped with an internal X-ray source equipped with a camera, a cable, etc. for use as well as a paint-coating facility.

In the lower part of the frame 61, which is a component of the C truck 6, a passage portion 61A made of a flat plate-like step is provided on one side in the width direction perpendicular to the traveling direction of the C truck 6. The C truck 6 is often adjacent to the B truck 5 because the C truck 6 is a truck for welding the joints in a state where the conduits hung on the B truck 5 are aligned (beveled). Therefore, the passage 61A of the truck 6 is configured in the same manner as the passage 51A of the truck 5. That is, the provided position and the position in the height direction (in the figure,
The position of the height indicated by the reference sign H) and the width (the width indicated by the reference sign W in the figure) are set to the same conditions as those of the passage 51A in the B truck 5. Further, a scaffolding step 61B that can be superimposed on the scaffolding step 51B provided in the bogie 5 is provided at the tip of the passage portion 61A. Thereby, when the C cart 6 is located at a position adjacent to the B cart 5, the B cart 5
And the passage portions 61A, 61A of the C carriage 6 can be continuous at the same height position and the same width with the steps for scaffolding 51B, 61B in the middle.

As shown in FIGS. 6 (1), (2), and (3), the D bogie 7 has a crane on the upper part of a column 72 upright on one side of the frame 71 in the same manner as the A bogie 4. 73 is equipped. The crane 73 includes an electric hoist 74 having a winding drum at the end of a jib arm, and a chain hoist 7 that is wound by a cable reel 75.
6 and the jib arm can be turned 90 degrees and 180 degrees inside the shield 1 like the A-cart 4 so that it can bend in two stages at the intermediate position 77 in the longitudinal direction and the position 78 near the tip. Is configured. In addition, the D bogie 7 is equipped with an electric jack device 79 for laying down the connection conduit on the horizontal portion of the frame 71, and the electric jack device 79 can lift and suspend the connection conduit. Has become.

At the lower part of the frame 71, which is a component of the D truck 7, a passage 71A made of a flat plate-like step is provided on one side in the width direction perpendicular to the traveling direction of the D truck 7. The passage portion 71A is formed of a flat plate-like step on one side in the width direction in a direction perpendicular to the traveling direction of the D truck 7, similarly to the passage portions in the carts A, B, and C described above,
The installation position and the height position (height in the figure, the height indicated by the symbol H) and the width (the width indicated by the symbol W in the figure) are the same as those of the passages of the A to C trucks 4, 5, and 6 It has been. The passage portion 71A is provided at a position where the jib arm is allowed to rotate, because the jib arm is mounted similarly to the A bogie. I have.

Since the present embodiment has the above configuration,
Passage portions 41A, 51A, 61 provided in each truck
Both A and 71A are provided on the same side in the vehicle width direction of the bogie, and the positions in the height direction are the same. As a result, the passage portions 41A, 51A, 61A, 7
1A is continuous in the same plane. Thereby, the operator can connect the continuous passage portions 41A, 51A, 61.
A, 71A can be walked, and it is possible to transport materials and equipment by using the passage. for that reason,
For example, in the above-described rail removal process for a transport trolley, A
Since the sleepers 8a, rails 8b, etc. removed by the carriage 4 can be transported to the opposite side using the continuous passage portions 41A, 51A, 61A, 71A, the sleepers 8a, rails 8b, etc. are re-used. Can be used. Further, when all the carts are adjacent to each other in the case of maintenance and inspection of the carts, the worker can move along the passages of the carts. This eliminates the need to get on and off the cart when moving between the carts.

[0034]

As is apparent from the above description, according to the first to third aspects of the present invention, since the passage is provided in the bogie, the passage in the cave can be used as a walking space for the worker. It becomes a space for transporting equipment. Therefore, the material used on one side of the truck can be used on the other side, and the cost of the material can be reduced. Also, even in a limited space, it is possible to prevent the movement of the worker from being hindered, and also to secure a foothold for the worker during the work, so that work in an unreasonable posture can be eliminated. As a result, it is possible to easily move between the carts, and the workability can be improved.

According to the fourth aspect of the present invention, since the passage for working on adjacent conduits is provided on the bogie located at the position closest to the conduits, the walking of the worker and the equipment and materials are performed. It is possible to eliminate the operation of going up and down and stepping over the frame constituting the carriage during the transportation.

[Brief description of the drawings]

FIG. 1 is a diagram for explaining an outline of a pipe laying operation using a work vehicle as a pipe laying operation according to the present invention.

FIG. 2 is a diagram showing a time schedule for explaining a pipe laying construction procedure shown in FIG.

FIG. 3 is a view showing an A-carriage, which is one of the work vehicles for pipe laying work according to the embodiment of the present invention, wherein (1) is a longitudinal front view, (2) is a longitudinal side view, and (3) is a transverse plane. FIG.

FIG. 4 is a view showing a B bogie, which is another one of the work vehicles for pipe laying work according to the embodiment of the present invention, wherein (1) is a longitudinal front view, (2) is a longitudinal side view, and (3) is a longitudinal sectional view. It is a cross-sectional plan view.

FIG. 5 is a view showing a C bogie, which is another one of the plumbing work bogies according to the embodiment of the present invention, wherein (1) is a longitudinal front view, (2) is a longitudinal side view, and (3) is It is a cross-sectional plan view.

FIG. 6 is a view showing a D bogie as still another one of the plumbing work bogies according to the embodiment of the present invention, wherein (1) is a vertical front view, (2) is a vertical side view, and (3). Is a cross-sectional plan view.

FIG. 7 is an explanatory view of a rail for a carriage provided in a shield.

FIG. 8 is an illustration of rails for a construction vehicle temporarily installed in a shield.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Shield tunnel 2 Conduit 3 Transport truck 4 A truck 41 Portal frame 41A Passage part 42 Crane 43 Winding drum 44 Electric hoist 45 Cable reel 46 Chain hoist 5 B truck 51 Portal frame 51A Passage part 52 Cable reel 53 Chain block 54 Hoisting device 6 C trolley 61 Frame 61A Passage 62 Power supply 63 Cylinder for welding equipment 64 Cable reel 7 D trolley 71 Frame 71A Passage 72 Support post 73 Crane 74 Electric hoist 75 Cable reel 76 Chain hoist 79 Electric jack device 8 For transport vehicle Rails 8a Sleepers 8b Rails 9 Rails for construction trolleys 9a Lower bracket 9b Upper bracket 9c Rail

Claims (4)

[Claims] 1. A work truck used for laying a pipeline serving as a pipeline in a tunnel such as a shield tunnel, wherein each operation for laying the conduit on a rail laid in the tunnel is performed. A carriage for pipe laying work, wherein a common passage portion is formed on the carriage fixed at the position. 2. The work truck for pipe laying work according to claim 1, wherein said passage portion is formed at a common position in a direction perpendicular to a moving direction of said bogie. Work trolley. 3. The work truck for pipe laying work according to claim 1, wherein said passage portion is constituted by steps provided in a bogie main body. 4. The work truck for laying pipes according to claim 1, wherein the passage is provided on a trolley provided with at least a device for executing pipes in a pipe laying work side by side. A work cart for pipe laying work.