JP2574302Y2 - Existing pipe non-cutting cloth replacement equipment - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for crushing existing concrete water pipes and sewage pipes laid underground or the like and laying new pipes, and in particular, a function for treating crushed fragments. The present invention relates to a non-cutting cloth replacement device for existing pipes having the following.

[0002]

2. Description of the Related Art The present applicant has previously developed an apparatus shown in FIG. 4 as an apparatus for laying existing concrete water pipes, sewer pipes, etc., which are piped underground or the like, in new pipes without excavating them. I've been. In this apparatus, a crushing unit 1, a new pipe 2, and a propulsion jack 3 are connected in tandem to form a re-laying device, and a concrete-made pipe 4 disposed in the ground is crushed by the crushing unit 1 while being propelled. The new pipe 2 is pushed in by the jack 3 and laid.

[0005] As shown in FIG. 5, the crushing section 1 has a crushing blade 6 disposed at the tip of a cylindrical body 5, which is pushed out by an extrusion jack 7 to crush the existing pipe 4.

[0004]

Incidentally, the above-mentioned re-laying apparatus does not have a function of collecting fragments of the existing pipe 4. Therefore, for example, if asbestos material or the like, which is regarded as a harmful substance, is used for the pipe 4, this harmful substance will remain in the ground forever, which is not preferable. In addition, the fact that the debris remains in the ground also impairs smoothness in pushing the new pipe.

The present invention has been made in view of the above-mentioned conventional problems, and has as its object to provide an apparatus for replacing existing pipes without opening and cutting, which has a function of collecting and effectively processing fragments of existing pipes. I do.

[0006]

In order to achieve the above-mentioned object, the present invention provides an existing pipe non-cutting cloth replacement apparatus which comprises a crushing section having a fragment collecting function, a new pipe, a fragment transferring section, and a fragment crushing section. The crushed portion is composed of a reducer and a screw conveyor blade having a diameter corresponding to the reducer and having a gradually reduced pitch.

[0007]

In the above construction, the fragments of the existing pipe crushed in the crushing section are sent from the crushing section to the fragment crushing section via the fragment transferring section. Then, in the fragment crushing section, the fragments are finely crushed by the crusher action of the reducer and the screw conveyor blade.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIGS. 1 is a crushing section 8, a new pipe 9, a fragment transfer section 10, a fragment crushing section 11,
The propulsion jacks 12 are configured to be connected in tandem. Reference numeral 13 in the drawing indicates an existing pipe.

As shown in FIG. 2, the crushing section 8
4 has an inner diameter that is sufficiently larger than the outer diameter of the existing tubular body 13, and a piece of the tubular body 13 is taken into the tubular body 15 by being pushed forward by the extrusion jack 16. ing. As shown in FIG. 3, the debris transfer unit 10 includes a screw conveyor 18 rotated by a hydraulic motor 17, and the tip of the screw conveyor 18 is inserted into the new pipe 9. The fragment crushing unit 11 is a screw conveyor 1
8 using the rear part. That is, as shown in FIG. 3, a reducer 20 connected to the rear part of the casing 19 of the screw conveyor 18 of the fragment transfer unit 10,
Located in the reducer 20 and the reducer 2
It comprises a screw conveyor blade 21 having an outer diameter and a pitch gradually reduced according to the inner diameter of 0. 2 in the figure
2 denotes a discharge port, 23 denotes a storage case, and 24 denotes fragments.

In the above construction, the fragments of the existing pipe 13 crushed by the crushing section 8 in the re-laying operation are taken in by the cylindrical body 15, pass through the new pipe 9, and are screwed by the screw conveyor 18 of the fragment transfer section 10. It reaches the fragment crushing section 11. The fragments 24 are pressed against the inner wall of the reducer 20 by the rotation of the screw conveyor blades 21, finely crushed by a crusher function, and discharged from the discharge port 22. Since the fragments 24 are finely crushed as described above, they can be easily taken out with a vacuum hose or the like, and the disposal process can be easily performed. Needless to say, in the replacement of the fabric, the fragments of the existing pipe 13 do not remain in the ground, so that the new pipe 9 can be easily pushed in. Further, since it does not remain as a harmful substance, it is preferable from the viewpoint of environmental hygiene.

The present invention is not limited to the structure of the crushing unit 8 and the fragment transferring unit 10 of the above embodiment, but may have another structure for crushing and transferring. In addition, fragment crushing section 1
One screw conveyor blade 21 does not necessarily have to be continuous with the screw conveyor 18.

[0012]

As is clear from the description of the above embodiment,
The existing pipe unremovable cloth replacement device of the present invention is provided with a crushing section having a shard collecting function, a shard crushing section continuously to the shard transferring section,
Since this fragment crushing section is composed of a reducer and a screw conveyor blade having a diameter corresponding to the reducer and a pitch gradually reduced, the post-treatment such as discarding the pieces of the existing pipe generated in the crushing section effectively and discarding the pieces is carried out. Can be easier. In addition, it is possible to easily push the new pipe in, and there is no debris remaining in the ground, which is advantageous in terms of environmental hygiene.

[Brief description of the drawings]

FIG. 1 is a side view schematically showing an apparatus for replacing an existing pipe without cutting in an embodiment of the present invention.

FIG. 2 is a sectional view of a crushing unit of the apparatus.

FIG. 3 is a sectional view of a fragment crushing section of the apparatus.

FIG. 4 is a side view showing the outline of a conventional existing pipe non-cutting cloth replacement apparatus.

FIG. 5 is a sectional view of a crushing unit of the apparatus.

[Explanation of symbols]

 Reference Signs List 8 crushing part 9 new pipe 10 shard transferring part 11 shard crushing part 13 existing pipe 20 reducer 21 screw conveyor blade

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-3-144184 (JP, A) JP-A-63-53381 (JP, A) JP-A-4-285383 (JP, A) JP-A-4- 54391 (JP, A) JP-A-1-290894 (JP, A) JP-A-4-87089 (JP, U) (58) Fields investigated (Int. Cl. ⁶ , DB name) F16L 1/024

Claims (1)

(57) [Scope of request for utility model registration] 1. A crushing section having a debris collecting function, a new tube,
A fragment transfer unit and a fragment grinding unit are provided in tandem, and the fragment grinding unit is an existing reducer and a screw conveyor blade provided in the reducer and having a diameter corresponding to the reducer and a pitch gradually reduced. Non-open cut cloth replacement equipment for pipes.