JP2585932B2 - Pipe supply and recovery equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pipe supply and recovery apparatus, and particularly to a pipe to be inserted into the ground, for example, a small-diameter pipe such as an electric wire, a telephone line burying pipe, a water pipe, a gas pipe, and the like. The present invention relates to a pipe supply / recovery device that supplies a pipe to a propulsion machine that excavates a lateral hole when burying the pipe, and recovers the pipe from the propulsion machine.

[0002]

2. Description of the Related Art Conventionally, supply of pipes to and recovery of pipes from a propulsion machine for a lateral hole excavation arranged in a shaft is performed by a crane installed on the ground. That is,
Hang the pipe from the ground with a crane and lower it to the propulsion machine,
Then, the worker in the shaft connects the supplied pipe to the spindle of the propulsion device and the buried pipe. When collecting the pipe, the pipe drawn by the spindle is removed from the spindle and the buried pipe, and the removed pipe is lifted to the ground by the crane.

[0003] Further, as another pipe supply and recovery device, an elevator for orbiting a plurality of pipes from the shaft to the ground is installed, and the pipe transfer position at the lower position of the elevator, the axial position of the spindle of the propulsion device, and the like. A transfer device for transferring pipes is arranged between the elevators, and the tubes supplied from the ground are transferred to the propulsion unit by the elevator, and the pipes withdrawn by the spindle are transferred to the empty elevator by the transfer device to the ground. A device to be recovered is also known (Japanese Unexamined Patent Publication No.
No.).

[0004]

However, in the conventional pipe supply / recovery apparatus using a crane, the pipes must be hung one by one, and then lifted, supplied and recovered. There is a disadvantage that this is the case.
In addition, in a pipe supply / recovery apparatus using an elevator, the height of the elevator must be increased in accordance with the depth of the shaft, so that there is a disadvantage that the apparatus becomes large-scale.

The present invention has been made in view of such circumstances, and it is an object of the present invention to provide a pipe supply / recovery apparatus which can supply and recover pipes in a short time with a simple apparatus.

[0006]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a pipe for supplying a pipe to a pipe propulsion device for pushing a pipe into the ground and a pipe for collecting a pipe from the propulsion machine. In the collecting device, a plurality of tubes are stacked in such a manner as to be detachably disposed in the vicinity of the propulsion device, so that when the lowermost tube is taken out, the tubes stacked on top of the lowermost tube sequentially fall freely. And a pipe transfer section for transferring the pipe between the pipe transfer position at the lower position of the cassette and the axial position of the spindle of the propulsion device.

[0007]

According to the present invention, when supplying tubes to the propulsion unit, the tube located at the lower position of the cassette among the plurality of tubes stored in the cassette is transported by the transport unit to the spindle of the propulsion unit. Convey sequentially to the axis position. When collecting the tubes from the propulsion device, the tubes removed from the spindle of the propulsion device are transported to a lower position of the cassette by the transport unit, and are sequentially collected in the cassette.

According to the present invention, pipe supply and recovery can be performed in a shorter time as compared with a pipe supply and recovery apparatus using a crane, and a pipe supply and recovery apparatus using an elevator can be compared. Thus, pipe supply and recovery can be performed with a simple device.

[0009]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing a preferred embodiment of a pipe supply / recovery apparatus according to the present invention. FIG. 1 is a front view showing an embodiment of a propulsion device 10 to which a pipe supply / recovery device according to the present invention is applied, and FIG. 2 is a side view thereof. The propulsion device 10 includes a base 12 disposed in a shaft 11, a feed cylinder not shown in the drawing that reciprocates along the base 12, a swivel head 16 disposed on the feed cylinder, and a guide 14. In addition, the propulsion device 10
Is the spindle 2 built in the swivel head 16
0 and the parent rod 1 attached to the spindle 20
8, a water swivel 22 and a hydraulic holder 24 provided at an end of the base 12. Accordingly, the propulsion device 10 can push the pipe 26A into the ground by moving the swivel head 16 forward in the direction indicated by the arrow and rotating the parent rod 18 forward by the spindle 20. After the excavation is completed, the pipe 26A pushed into the ground by the parent rod 18 is connected, the parent rod 18 is rotated forward, and the swivel head 16 is retracted, whereby the pipe 26A can be pulled out. The pipe 26A
A leading conduit 28 is connected to the leading end of the leading conduit 28, and a bit 30 is provided at the leading end of the leading conduit 28.

[0010] The pipe supply and recovery device is disposed along the base 12 on the side of the base 12 and comprises a cassette 32 and a transport section 34. In the cassette 32, five tubes 26, 26 are stored in the vertical direction.
6 are prevented from falling off from the cassette 32 by stopper bolts 36, 36 attached to the lower part of the cassette 32. The cassette 32 is suspended from the ground by using a crane or the like (not shown) or the like and a suspension wire 37 indicated by a two-dot chain line in the figure.
Is suspended through a frame 38 on the side of the transport section 34
(See FIG. 4).

As shown in FIG. 3, the transfer section 34 includes a stopper 40, an elevator 42, and a transfer arm 44. The stopper 40 is provided in a concave portion 38 a formed in an upper portion of the gantry 38, and includes a hydraulic cylinder 46 and a cylinder rod 48 thereof. The base end 46a of the hydraulic cylinder 46 is provided with the recess 38a.
And is swingable. Further, a stopper claw 50 is fixed to the tip of the cylinder rod. The stopper claw 50 can prevent the pipe 26 from dropping off due to the extension of the cylinder rod 48 when the cylinder rod 48 is extended. The tube is retracted from the passage area of the pipe 26.

In the elevator 42, a cylinder rod 54 of a hydraulic cylinder 52 is provided to extend and contract along the vertical direction of the gantry 38. A plate 56 on which the pipe 26 is mounted is fixed to the cylinder rod 54. ing. Therefore,
The elevator 42 can transport the pipe delivered from the stopper 40 to a clamp section 58 of the transport arm 44 described below by contracting the cylinder rod 54, and also deliver the pipe from the clamp section 58. The tube 26 can be transported to the stopper 40 by extending the cylinder rod 54.

The lower end of the transfer arm 44 is pivotally mounted on the base 12 via a pin 60 and is rotatable. Hydraulic cylinder 62 for rotating transfer arm 44
Is mounted on the transfer arm 44 via a pin 64, and its cylinder rod 66 is mounted on the base 12 via a pin 68. Therefore, the transfer arm 44 expands and contracts the cylinder rod 66 to move the above-described clamp portion 58 to the position shown in FIG. 3, that is, the delivery position of the tube 26 from the elevator 42, and to the position shown in FIG. The main rod 18 can be reciprocated with respect to the position on the axis line (point A shown in FIG. 3).

[0014] As shown in FIG.
It is composed of a fixed claw 70 and a rotating claw 72. Fixed nail 70
Is fixed to the upper part of the transfer arm 44, and the rotating claw 72 is pivotally mounted on the transfer arm 44 via a pin 74. A cylinder 76 for rotating the rotary claw 72 is pivotally mounted on the transfer arm 44 via a pin 78, and its cylinder rod 80 is connected to the rotary claw 72 via a pin 82.
Is attached to the indication plate 84 of the first embodiment. Therefore, the clamp 5
8, by extending the cylinder rod 80,
The tube 26 can be clamped between the fixed claw 70 and the rotating claw 72, and the clamp of the tube 26 can be released by contracting the cylinder rod 80.

Next, the operation of the pipe supply / recovery device configured as described above will be described. First, after the propulsion device 10 shown in FIG. 1 is remotely operated on the ground to push the pipe 26A into the ground, the pipe 26A is cut off from the main rod 18, the feed cylinder not indicated in the drawing is retracted, and the swivel head 16 is moved. The tube is retracted until a new tube 26 can be joined.

Next, a procedure for transporting a new tube 26 between the tube 26A and the parent rod 18 will be described with reference to FIGS. First, the cylinder rod 54 of the elevator 42 is extended as shown in FIG. 4 to raise the plate 56, and the lowermost tube 26 of the tubes 26, 26. Place. Then, the stopper bolt 36 is loosened so that the pipe 26 can be supplied to the transport section 34.

Next, the cylinder rod 54 is contracted to lower the pipe 26 placed on the plate 56 so that the stopper 4
The zero cylinder rod 48 is extended, and the stopper pawl 50 prevents the five tubes from falling off (see FIG. 5). Next, the cylinder rod 54 of the elevator 42 is extended, the plate 56 is raised, and the tube 26 mounted on the stopper claw 50 is mounted thereon.
The cylinder rod 48 of the stopper is contracted, the cylinder rod 54 of the elevator 42 is contracted, and the tube 26 placed on the plate 56 is lowered. Then, when the pipe 26 passes through the stopper 40, the cylinder rod 48 of the stopper 40 is extended to prevent the stopper pipe 50 from dropping off the second pipe 26.

Next, the tube 26 placed on the plate 56 is
The cylinder rod 80 of the cylinder 76 is extended at the timing of descending to the clamp portion 58 of the transfer arm 44, and the tube 26 is clamped between the fixed claw 70 and the rotating claw 72 as shown in FIG. After the clamping is completed, the cylinder rod 66 of the cylinder 62 is contracted to
Is rotated counterclockwise to position the clamped tube 26 in the position shown in FIG. 7, that is, on the axis of the parent rod 18 shown in FIG. Thus, the process of transporting the pipe 26 is completed. After joining the tubes 26, the transfer arm 44 is returned to the position shown in FIG. 8 and is ready for the transfer of the second tube 26.

Therefore, by repeating the steps shown in FIGS. 5 to 8, the tubes 26, 2
6 can be conveyed to the propulsion device 10 in order. Next, a procedure for collecting the pushed pipe 26 from the propulsion device 10 into the cassette 32 will be described. First, the feed cylinder is retracted and the tube 26 pulled out is clamped by the clamp 58.
After that, the tube 26 is separated from the adjacent tube 26 and the parent rod 18 and held by the clamp portion 58.

Next, after the transfer arm 44 is rotated to the position shown in FIG.
6 is lifted and placed on the stopper claw 50 fixed to the tip of the cylinder rod 48 of the stopper 40. At this time, the stopper claw 50 of the stopper 40 protrudes into the passage area of the tube 26, but the lower portion thereof abuts on the tube 26 during the ascent of the tube 26, as indicated by a two-dot chain line in FIG. , And retracts from the passage area of the pipe 26. Thus, the tube 26 can be placed on the stopper claw 50 without extending and contracting the cylinder rod 48 of the stopper claw 50. Further, the mounted tube 26 does not fall off the stopper claw 50 because the stopper claw 50 is in a projected state even when the elevator 42 is lowered.

As described above, by operating the elevator 42 and the transfer arm 44 in the sequence described above,
The tubes 26 can be placed on the stopper claws 50 in order. Next, the cylinder rod 54 of the elevator 42 is extended, the plate 56 is raised, the tube 26 placed on the stopper claw 50 is raised, and the stopper bolt 36 is tightened to collect in the cassette 32.

Therefore, according to this embodiment, pipe supply and recovery can be performed in a shorter time than in a conventional pipe supply and recovery apparatus using a crane. Further, compared to a conventional pipe supply / recovery apparatus using an elevator, pipe supply / recovery can be performed with a simpler apparatus. In addition, pipe 26
In the case of using more than two cassettes, the same cassettes 32, 32,... May be stacked on the illustrated cassette 32.

[0023]

As described above, according to the pipe supply / recovery apparatus of the present invention, a cassette in which a plurality of pipes are stored is arranged near the propulsion unit, and the pipes are supplied to the propulsion unit. At this time, among the plurality of tubes stored in the cassette, the tube located at the lower position of the cassette is sequentially transported to the axis position of the spindle of the propulsion unit by the transport unit, and the tubes are collected from the propulsion unit. In this case, the pipe removed from the spindle of the propulsion unit was transported to the lower position of the cassette by the transport unit and stored in the cassette sequentially, so compared to the pipe supply and recovery device using a crane, Supply and recovery can be performed in a short time, and the supply and recovery of pipes can be performed with a simpler apparatus than a pipe supply and recovery apparatus using an elevator.

[Brief description of the drawings]

FIG. 1 is a front view of a propulsion device to which a pipe supply / recovery device according to the present invention is applied.

FIG. 2 is a side view of FIG.

FIG. 3 is an explanatory view showing an embodiment of a pipe supply and recovery apparatus according to the present invention.

FIG. 4 is an explanatory view of the operation of the pipe supply / recovery device according to the present invention.

FIG. 5 is an explanatory view of the operation of the pipe supply and recovery device according to the present invention.

FIG. 6 is an explanatory view of the operation of the pipe supply / recovery device according to the present invention.

FIG. 7 is an explanatory view of the operation of the pipe supply / recovery device according to the present invention.

FIG. 8 is an explanatory view of the operation of the pipe supply and recovery device according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 ... Propulsion device 26 ... Pipe 32 ... Cassette 34 ... Transport part 40 ... Stopper 42 ... Elevator 44 ... Transport arm 50 ... Stopper claw 58 ... Clamp part 70 ... Fixed claw 72 ... Rotating claw

Claims (1)

(57) [Claims] 1. A pipe supply / recovery device for supplying a pipe to a pipe propulsion device for pushing a pipe into the ground and recovering the pipe from the propulsion device, wherein the pipe is detachably disposed near the propulsion device. And the bottom tube is
When taken out, the tubes stacked on top of it are free sequentially
Multiple tubes are stacked in a stack so that they can fall.
And a pipe transfer unit for transferring the pipe between a pipe transfer position at a lower position of the cassette and an axial position of a spindle of the propulsion device.