JP4236761B2 - Pipe-type carriage for transporting pipes - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a portal trolley used for transporting a long pipe, and more particularly to a portal trolley for transporting a pipe that is optimal for use in burying a long pipe in a groove cut in a ground.
[0002]
[Prior art]
To embed long steel pipes along the side of the road, a groove is usually cut in the side of the road, and a pipe of a predetermined length (usually 12 m) is suspended in the groove. It is made to add by sequential welding and then backfill with earth and sand.
[0003]
For embedding the long pipe, rails 2 are installed at positions near both ends of the pipe P so as to straddle the previously cut groove 1 as schematically shown in FIG. 5 (FIG. 5A). On the road 3 side, the carriage 4 on which the pipe P to be buried is placed is moved on the rail 2 to be positioned on the groove 1 (FIG. 5B), and then the portal crane 5 is placed on the carriage 4. Then, the suspension wire 7 of the chain block 6 is wound around the pipe P (FIG. 5C), and then the chain block 6 is operated to lift the pipe P and the carriage 4 is moved to the upper part of the groove 1. Then, the rail 2 is removed (FIG. 5 (D)), and then the pipe P is suspended in the groove 1 by the chain block 6 and installed at the groove bottom.
[0004]
[Problems to be solved by the invention]
However, in the above-mentioned conventional means, it is necessary to perform the operations of laying the rail 2, installing and moving the cart 4, installing the portal crane 5, and removing the cart 4 and the rail 2, so that the operations are diverse and vigorous. The efficiency of embedding pipes was extremely low, and in the case of roads, there were various problems such as a prolonged period of traffic regulation.
[0005]
In view of this, the present invention has been made with the object of providing a portal-type carriage for transporting a tube that can be performed consistently from the transportation of a long tube to a hanging operation and can perform the operation with high efficiency. It is.
[0006]
[Means for Solving the Problems]
As a means for solving the above-mentioned problems, the present invention provides a portal frame and left and right cart frames fixed to a lower portion of the left and right vertical frames of the portal frame with an interval larger than the outer diameter of the pipe to be transported. And a pair of front and rear wheels pivotally supported on the front and rear portions of the bogie frame, and a swivel movement in a horizontal plane between the left and right bogie frames over a retracted position parallel to the bogie frame from a protruding position perpendicular to the frame. And a swing arm for supporting the pipe at the protruding position and a suspension device attached to the horizontal frame at the upper part of the portal frame for suspending the pipe.
[0007]
As a result, when embedding the long tube in the groove, the swivel arm of the bogie frame is set at a protruding position perpendicular to the bogie frame, and the long tube is placed on the swivel arm so Is placed at the upper part on both sides in the width direction of the groove, and is moved by wheels to the pipe burying position.
[0008]
After moving to the embedment position, the wire of the suspension device is hung on the long tube and slightly lifted, and each swivel arm is swung to the retracted position parallel to the carriage frame and stored. As a result, the lower portion of the long tube is opened, and the long tube can be installed at the bottom of the groove if it is suspended as it is by the suspension device. Meanwhile, there is no need to move the bogie frame.
[0009]
It is preferable to provide a tube receiving roller on the upper surface of the swivel arm because the mounting position can be easily adjusted when the tube is mounted.
[0010]
In addition, if the suspension device can be adjusted to the lateral frame of the gate-type frame, if the hanging position of the long pipe is shifted from the center of the groove due to the inclination of the road surface, etc. This is preferable because it can be hung to a position.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
The present invention will be described below with reference to embodiments shown in the drawings.
[0012]
FIG. 1 shows a side view of an embodiment of a portal carriage for carrying a pipe according to the present invention, FIG. 2 is a plan view thereof, and FIG. 3 is a sectional view taken along line AA of FIG.
[0013]
The portal trolley 10 is fixed to a gate frame 11 having a downward U-shape when viewed from the front and a mountain shape when viewed from the side, and lower portions of the left and right vertical frames 12 and 12 of the portal frame 11. The left and right bogie frames 13 and 13, four wheels 14, 14, 15 and 15 pivotally supported on the front and rear portions of the bogie frames 13 and 13, respectively, The swivel arms 16 and 16 are pivotally supported so as to be able to swivel approximately 90 ° in a horizontal plane from a projecting position perpendicular to the cart frames 13 and 13 to a retracted position parallel thereto, and are pivotally supported on the upper surfaces of the swivel arms 16 and 16. The pipe receiving rollers 17 and 17 and a suspension device 19 mounted on the horizontal frame 18 above the portal frame 11 are configured.
[0014]
The portal frame 11 and the carriage frames 13 and 13 are made of a steel material such as H-shaped steel and a combination thereof, and the upper portions of the vertical frames 12 and 12 are connected by reinforcing members 20 and 20.
[0015]
Bearing units 21 and 21 are formed on the carriage frames 13 and 13 so as to project outward from the carriage frames 13 and 13, and brackets 22 and 23 that support the wheels 14 and 15 are supported below the bearing units 21 and 21. The upper part is installed. These wheels 14 and 15 are of rubber tire type, or metal wheels with flanges when used in combination with rails.
[0016]
Among the wheels, the brackets 22 and 22 of the wheels 14 and 14 on the front side in the traveling direction are rotatably supported by the shafts 24 and 24 on the bearings 21 and 21 as shown in FIG. , 24 is rotated about 15 ° on one side and steering is possible.
[0017]
The swivel arms 16, 16 are pivotally supported by shafts 26, 26 at bearing portions 25, 25 of the carriage frames 13, 13 between the bearings 27, 27 protruding from the upper surfaces of the swivel arms 16, 16. The tube receiving roller 17 is axially attached. The pipe receiving roller 17 is a drum-shaped roller in the illustrated example, and the shafts of the pipe receiving rollers 17 and 17 are rotated when the swivel arms 16 and 16 are swung to a projecting position orthogonal to the carriage frames 13 and 13. The center in the direction is placed at the center in the width direction of the portal frame 11. This roller may be a slide that does not rotate.
[0018]
The suspension device 19 is attached with a hoisting machine such as a chain block (hoist), and has a support member 28 that is slidable in the longitudinal direction across the horizontal frame 18 at the top of the gate-type frame 11. A screw shaft 30 (trapezoidal screw) rotatably supported by bearings 29, 29 at the upper part of the horizontal frame 18 is screwed into the support member 28, and a chain wheel 31 fixed to the outer end of the screw shaft 30 is attached. The support member 28 can be moved in the longitudinal direction of the horizontal frame 18 over a range indicated by B in FIG. 3 by manually rotating the screw shaft 30 through the wound chain 32.
[0019]
In the figure, reference numerals 33 and 33 denote rail mounts, which are so-called “chambers” which are widened to secure work spaces 1a and 1a when the pipe P is welded and connected in the groove 1 as schematically shown in FIG. In order to allow the portal carriage 10 to pass over the widened work space 1a, 1a when a portion called "" is provided, rails 34, 34 are mounted to be mounted on the portion. Reference numerals 35 and 35 denote brake levers for operating a brake device (not shown) of the non-steering wheels 15 and 15.
[0020]
Next, the operation of the above embodiment will be described.
[0021]
When the operation of embedding the long tube in the groove is performed, the swivel arms 16 and 16 of the bogie frames 13 and 13 are swung to a protruding position perpendicular to the bogie frames 13 and 13 as shown by solid lines in FIG. Then, one end of the long tube P is placed on the tube receiving rollers 17, 17, and the other end of the long tube P is placed on the tube receiving rollers 17, 17 of the other portal carriage 10.
[0022]
After that, the portal trolley 10 is positioned so as to straddle the previously excavated groove 1 and is moved and moved by the wheels 14 and 15 to the pipe embedment site.
[0023]
When reaching the burial location, the wire of the chain block of the suspension device 19 is wound around the long pipe P and slightly lifted up to a height exceeding the large diameter portion of the tube receiving rollers 17, 17, and then the swivel arms 16, 16 are shown in FIG. As shown by a chain line, the vehicle is turned to a position parallel to the carriage frames 13 and 13 and stored.
[0024]
As a result, the lower portion of the long pipe P is opened, and the long pipe P can be installed at the groove bottom of the groove 1 by hanging it as it is.
[0025]
When the upper surface of the road is inclined and when the long pipe P is suspended by the suspension device 19, the screw shaft 30 is rotated by operating the chain 32 when it is greatly displaced from the center position between the carriage frames 13 and 13. The suspension position of the long pipe P can be determined at a predetermined location by moving the support member 28 to the right or left.
[0026]
As a means to cope with the road surface inclination, the suspension device 19 is moved laterally as described above, and the wheels 14 and 15 are moved up and down by about 10 cm on one side by a screw screw mechanism or a hydraulic jack. You may make it respond | correspond by adjusting the vertical position of a wheel according to the inclination of a road surface so that it can move. Further, both the position adjustment of the suspension device 19 and the vertical adjustment of the wheel may be combined.
[0027]
Even when the long pipe P is not buried in the ground and moved to another place, the long pipe can be transported by the above procedure.
[0028]
【The invention's effect】
As described above, according to the present invention, since the long tube is placed on the swivel arm that can swivel over the protruding position orthogonal to the cart frame and the storage position parallel to the cart frame, When transporting the long tube, the swivel arm is protruded to support the long tube, and when it reaches the position where the long tube is lowered, the long tube is lifted and the swivel arm is swung to the retracted position so that the long tube can be used as it is. It can be suspended on the ground or in a ditch, so there is no need to remove the carriage or its rails or bring a portal crane when hanging the pipe as in the past, and work efficiency can be significantly improved. At the same time, since the long tube is always placed between the vertical frames of the portal frame, it is not accidentally moved out, and the safety of work can be maintained.
[0029]
Further, if the swivel arm is provided at the opposite position of the left and right bogie frames, the length of the bogie frame can be kept to the minimum necessary, and the portal bogie can be configured compactly.
[0030]
Furthermore, by making it possible to adjust the position of the suspension device attached to the horizontal frame of the portal frame along the horizontal frame, the long pipe can be fixed without moving the carriage even when the ground is inclined on a road or the like. It can be hung correctly at the position.
[Brief description of the drawings]
FIG. 1 is a side view showing an embodiment of a portal carriage for carrying a pipe according to the present invention.
FIG. 2 is a plan view of the same.
3 is a cross-sectional view taken along line AA in FIG.
FIG. 4 is an explanatory diagram in the case where a “meeting place” in which a groove is widened when a pipe is buried is provided.
FIGS. 5A to 5D are explanatory diagrams showing a conventional technique. FIGS.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Groove 10 Pipe-type cart 11 for carrying pipes Gate-type frame 12 Vertical frame 13 Bogie frame 14, 15 Wheel 16 Rotating arm 17 Pipe receiving roller 18 Horizontal frame 19 Suspension device 28 Support member 30 Screw shaft 32 Chain 33 Rail mount

Claims (1)

Portal frame,
Left and right bogie frames fixed at an interval larger than the outer diameter of the pipe to be transported to the lower parts of the left and right vertical frames of the portal frame;
A pair of front and rear wheels pivotally supported on the front and rear portions of the carriage frame;
A front and rear swivel arm that is supported so as to be capable of swiveling in a horizontal plane between left and right bogie frames from a projecting position perpendicular to the cart frame to a parallel storage position, and supports a pipe at the projecting position;
A portal carriage for transporting a pipe having a suspension device mounted on a horizontal frame above the portal frame and for suspending a pipe,
A drum-shaped tube receiving roller constricted toward the center supporting the tube on the upper surface of each swivel arm;
A rail pedestal attached to each of the left and right vertical frames to mount rails that pass over the widened work space to pass the portal carriage for transporting pipes;
Have
The swivel arm is pivotally supported at an even position of each bogie frame,
The pipe-type carriage for carrying a pipe, wherein the suspension device is supported so as to be adjustable in position via a screw shaft rotatably provided along the horizontal frame .

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