JP6569248B2 - Cleaning device - Google Patents

Description

  The present invention relates to a cleaning device capable of cleaning a joining surface of a preceding element in a continuous underground wall.

  Conventionally, as one of the construction methods to build underground continuous walls, after building a reinforced concrete leading element in the ground, it is also a reinforced concrete trailing element in the excavation groove formed adjacent to the leading element There are known ways to build and succeed. The underground continuous wall constructed by such a method is likely to cause water leakage at the joint between the preceding element and the succeeding element.

  For this reason, in order to improve the water stoppage at the joint part of the underground continuous wall, a joining method by a so-called cutting joint method is used in which the joining surface of the preceding element is cut to form irregularities prior to the construction of the succeeding element. Often used. In this joining method, the joining surface of the preceding element is cut to form irregularities, and the joining surface is cleaned to remove deposits such as earth and sand and mud cake, and then the succeeding element is removed. How to build.

  And as a cleaning device for cleaning the joining surface, for example, as disclosed in Patent Document 1, a wire brush attached to the side end surface of the slime treatment device, as disclosed in Patent Document 2 In addition, a horizontal multi-axis rotary excavator cutter drum in which a cleaning device having a brush is detachably attached is used.

JP 11-315540 A JP 2000-273902 A

  However, when the joining surface is cleaned with a wire brush attached to the side end surface of the slime processing device of Patent Document 1, the wire brush is made of a bristle material having a long bristle and a thin wire diameter. By moving downward, the casting surface is moved with its tip always facing downward or upward, and the deposit on the joining surface cannot be scraped off sufficiently.

  On the other hand, when the joining surface is cleaned with a brush attached to the cutter drum of the horizontal multi-axis rotary excavator of Patent Document 2, the cutter drum is moved while moving the horizontal multi-axis rotary excavator vertically upward or downward. By rotating the brush, the brush repeats an operation of rotating while scraping off the adhered material at the tip thereof, so that the effect of removing the adhered material on the joining surface is enhanced.

  However, the tip of the brush is always in a state of protruding from the side end surface of the horizontal multi-axis rotary excavator so as to come into contact with the joining surface of the preceding element. For this reason, for example, when a backfill layer exists on the upper part of the underground continuous wall, when the horizontal multi-axis rotary excavator is inserted into the excavation groove, the tip of the brush touches the backfill layer and reaches the joining surface. Since it will become dirty before performing, the situation which cannot fully perform the function as a brush at the time of cleaning of a joining surface tends to arise.

  This invention is made | formed in view of this subject, The main objective is to provide the cleaning apparatus which can scrape off the deposit | attachment adhering to the joining surface of a preceding element reliably. .

In order to achieve such an object, the cleaning device of the present invention is a cleaning device used when constructing an underground continuous wall by continuously succeeding a succeeding element to a preceding element, and the joining surface of the preceding element A cutter drum that forms irregularities by cutting the surface, a horizontal multi-axis rotary excavator having a main body frame with the cutter drum installed at the lower end, and a state in which the main body frame is drawn inward from a side end surface facing the preceding element a cleaning jig in is arranged, the cleaning fixture, characterized in that it comprises a telescopic device for pushing until it abuts against the striking passage surface of the preceding element.

  According to the above-described cleaning device, the cleaning jig can be pushed out at a desired depth position in the excavation groove to clean the joining surface of the preceding element. Therefore, when cleaning the joining surface to the desired depth position, cleanliness is required. It is possible to reliably remove deposits on the joining surface with a cleaning jig in a proper state.

  The cleaning apparatus of the present invention is characterized in that the cleaning jig is made of a plate material provided with a plurality of projections having wear resistance and bending resistance on the surface.

  According to the above-described cleaning device, even if the protrusion of the cleaning jig is in contact with the joining surface of the preceding element and moved vertically upward or downward, the bristle material, like the conventional wire brush, Since the placement surface does not move in the state of being vertically downward or upward, it is possible to scrape the deposit by always bringing the tip of the protrusion into contact with the joining surface.

  The cleaning device of the present invention is characterized by including an ejection device that ejects a fluid in the direction of pushing out the cleaning jig in the vicinity of the cleaning jig.

  According to the cleaning device described above, since the joining surface can be cleaned by the fluid ejected from the ejecting device while scraping off the deposit on the joining surface with the cleaning jig, the joining can be performed more reliably. Surface deposits can be removed.

  According to the present invention, the cleaning jig can be pushed out at a desired depth position in the excavation groove to clean the joining surface of the preceding element. Therefore, the desired depth position to be cleaned while holding the cleaning jig clean. It is possible to reliably remove deposits on the joining surface.

It is a figure which shows the outline | summary of the cleaning apparatus. It is a figure which shows the detail of the cleaning jig attached to a cleaning apparatus. It is a figure which shows the state which accommodated the cleaning jig | tool installed in the cleaning apparatus. It is a figure which shows the cleaning method of the joining surface of a preceding element using a cleaning apparatus. It is a figure which shows the other example of the cleaning method of the joining surface of a preceding element using the cleaning apparatus. It is a figure which shows the other example of a cleaning apparatus. It is a figure which shows the detail of the brush cleaning tool attached to the cutter drum.

Below, the cleaning apparatus 1 of this invention is demonstrated using FIGS. 1-3.
The cleaning device 1 according to the present invention cleans the connection surface 81 of the preceding element 8 of the underground continuous wall constructed by passing the succeeding element of the reinforced concrete structure continuously to the preceding element 8 of the reinforced concrete structure. As shown in FIG. 1, a horizontal multi-axis rotary excavator 10 capable of forming irregularities by cutting the joining surface 81 of the preceding element 8 and the cleaning jig 2 are provided. Yes.

  The horizontal multi-axis rotary excavator 10 is conventionally used when constructing a reinforced concrete underground continuous wall, and excavates a excavation groove 9 continuous to the preceding element 8 and at the same time provides a joining surface 81 of the preceding element 8. Cuttings form irregularities.

  In the present embodiment, the horizontal multi-axis rotary excavator 10 is provided with a cutter drum 11 capable of cutting the joining surface 81 of the preceding element 8 as shown in FIG. Although not shown, the main body frame 12 includes a mud pipe, a mud pump, and a telescopic correction plate for correcting the posture of the main body frame 12. A cleaning jig 2 made of a plate material is installed at the upper end of the main body frame 12.

  As shown in FIG. 2, the cleaning jig 2 is made of a plate material having a plurality of projections 21 having a large diameter on the surface, and the projections 21 are slid on the connection surface 81 of the preceding element 8. In addition to having abrasion resistance that does not wear, the joint surface 81 is not scraped off, but has bending resistance that does not cause bending into a bowl shape. Any material may be used, but in the present embodiment, an ether-based polyurethane rubber using polypropylene glycol as a polyether-based polyol having mechanical properties and water resistance and high durability is employed. ing.

  The protrusion 21 is formed in a cylindrical shape having a flat tip, and the cleaning jig 2 is slid in the vertically downward direction in a state where the flat surface is in contact with or pressed against the joining surface 81. The deposit is scraped off at the tip of the protrusion 21.

  For this reason, the cleaning jig 2 is installed on the main body frame 12 via the telescopic device 3 so that the protrusion 21 can be brought into contact with the joining surface 81 of the preceding element 8 and further pressed.

  As shown in FIG. 1, the expansion device 3 is installed at the upper end of the cleaning jig 2 and expands and contracts in the horizontal direction toward the preceding element 8, and employs a mechanism that operates in a pantograph shape. However, the present invention is not necessarily limited to this, and for example, one having a linearly expanding / contracting mechanism may be employed. In the present embodiment, not only the amount by which the cleaning jig 2 is pushed out from the side end surface of the main body frame 12 toward the preceding element 8 with respect to the expansion / contraction device 3 but also the inner side of the side end surface of the main body frame 12 is adjusted. The amount of expansion and contraction that can be pulled in is given.

  When the cleaning device 1 is inserted into the excavation groove 9, the cleaning jig 2 is pulled inward from the side end surface of the main body frame 12 as shown in FIG. 3. When the cleaning device 1 is inserted into the excavation groove 9 and lowered to reach a position where cleaning is desired to start, the cleaning jig 2 is moved from the side end surface of the main body frame 12 via the telescopic device 3 as shown in FIG. Pushing toward the leading element 8, the tip of the protrusion 21 can be brought into contact with the joining surface 81.

  In this way, after being inserted into the excavation groove 9, the cleaning jig 2 can be brought into contact with or pressed against the joining surface 81 at a height position where it is desired to start cleaning. It can be kept clean without being stained.

  In addition, after the protrusion 21 of the cleaning jig 2 is brought into contact with the joining surface 81, the extension amount of the expansion / contraction device 3 is adjusted according to the adhesion strength of the deposit on the joining surface 81, It is also possible to adjust the pressing strength of the protrusion 21.

  In the present embodiment, the cleaning jig 2 is arranged on the upper part of the main body frame 12, but the arrangement place is not necessarily limited to this, and the leading element 8 is hit from the side end surface of the main body frame 12. As long as it can move in and out toward the joint surface 81, it may be arranged at any position of the main body frame 12.

  Moreover, although the shape of the protrusion 21 of the cleaning jig 2 is a cylindrical shape, the shape is not necessarily limited thereto, and may be, for example, a prism.

Further, the cleaning device 1 is provided with an injection device 4 as shown in FIG.
As shown in FIG. 1B, the injection device 4 includes a plurality of injection holes 41 in the depth direction of the main body frame 12, from the side end surface of the main body frame 12 toward the joining surface 81 of the preceding element 8. The fluid 42 is ejected, thereby removing the deposits.

  In addition, the attachment position of the injection device 4 is not necessarily limited to the upper end portion of the main body frame 12 like the cleaning jig 2. As long as the fluid can be ejected from the side end surface of the main body frame 12 toward the joining surface 81 of the preceding element 8, it may be provided at any position of the main body frame. The general arrangement position is not limited at all.

  In addition, as described above, in the present embodiment, the horizontal multi-axis rotary excavator 10 constituting the cleaning device 1 includes a mud pump and a mud pipe, although not shown. As a result, the stabilizing liquid in the excavation groove 9 is sucked together with the earth and sand by the mud pump and discharged to the ground by the mud pipe, and then the earth and sand is separated by the ground plant and is excavated again as a circulating stabilizer. It is supplied to the groove 9.

  Therefore, in the present embodiment, the above circulating stabilizing liquid is employed for the fluid 42 ejected from the ejection device 4. However, the fluid is not limited to this, and if it does not inhibit the function of the stabilizing liquid in the excavation groove 9 by being supplied to the excavation groove 9, a newly prepared stabilizing liquid, Any fluid such as air may be employed.

  The usage method when the joining surface 81 is cleaned using the cleaning device 1 provided with the above-described cleaning jig 2 is the same as that of the preceding element 8 with a distance similar to the width of the cleaning device 1 across the excavation groove 9. In the case of matching, the case where the preceding element 8 is adjacent to each other with a distance longer than the width of the cleaning device 1 across the excavation groove 9 will be described as an example, and will be described below with reference to FIGS.

  In the present embodiment, the case where the backfill portion 13 exists above the preceding element 8 is taken as an example. Prior to cleaning the joining surface 81 of the preceding element 8, the horizontal multi-axis excavator 10 constituting the cleaning device 1 is used to drill the leading element 8 while excavating the excavating groove 9 continuous with the preceding element 8. It is assumed that irregularities are formed on the joint surface 81 and the slime treatment of the excavation groove 9 is also completed.

First, as shown in FIG. 4A, when the preceding element 8 is adjacent to the cleaning device 1 with a distance similar to the width of the cleaning device 1 across the excavation groove 9, the main body frame 12 is The cleaning jig 2 is attached to the vicinity of both side end surfaces via the extension device 3.
Then, the cleaning jig 2 is suspended from the side end face of the main body frame 12 in the excavation groove 9 in the state where the slime treatment is finished, and the cleaning jig 2 is suspended from the top end of the preceding element 8. Insert until position is reached. The horizontal multi-axis rotary excavator 10 constituting the cleaning device 1 is provided with a depth meter (not shown).

  Thereafter, as shown in FIG. 4 (b), the expansion / contraction device 3 is operated to push the cleaning jig 2 toward the preceding element 8, thereby bringing the protrusion 21 into contact with the joining surface 81. In this state, the cleaning device 1 is lowered, and the protrusion 21 is slid on the joining surface 81 to scrape off the deposits.

  Note that the scraping force by the protrusions 21 may be strengthened by applying a pressing force to the cleaning jig 2 by the expansion / contraction device 3 in accordance with the physical properties and adhesion strength of the deposit. In addition, the fluid 42 may be ejected from the ejection hole 41 of the ejection device 4 toward the joining surface 81 as appropriate.

  As described above, when the preceding elements 8 are adjacent to each other with the same distance as the width of the cleaning device 1 across the excavation groove 9, the adjacent preceding elements 8 contact the cleaning jig 2 with the joining surface 81. It becomes a reaction force at the time of letting. However, as shown in FIG. 5A, when the preceding element 8 is adjacent to the excavation groove 9 with a distance longer than the width of the cleaning device 1, the cleaning jig 2 is separately applied to the joining surface 81. A reaction force frame 6 is used as a reaction force receiver when contacted.

  As shown in FIG. 5, when the preceding element 8 is adjacent with a distance longer than the width of the cleaning device 1 across the excavation groove 9, a reaction force having a necessary width in the excavation groove 9 in a state where the slime treatment is finished. The frame 6 is installed along either one of the preceding elements 8.

Then, the cleaning device 1 is inserted between the reaction force frame 6 and the preceding element 8 and lowered until the cleaning jig 2 reaches the top end position of the preceding element 8.
Thereafter, the expansion / contraction device 3 is operated to push one cleaning jig 2 toward the preceding element 8 so that the protrusion 21 is brought into contact with the joining surface 81. If it carries out like this, the main body frame 12 which comprises the reaction force frame 6 and the horizontal multi-axis excavator 10 will contact | abut timely. In this state, the cleaning device 1 is lowered, and the protrusion 21 is slid on the joining surface 81 to scrape off the deposits.

  Thus, after the cleaning of the placement surface 81 of the preceding element 8 with one cleaning jig 2, the cleaning device 1 is once withdrawn from the vertical hole 9, and the position of the reaction force frame 6 is changed to complete the cleaning. Then, the above procedure is repeated to clean the placement surface 81 of the uncleaned preceding element 8.

  Note that the reaction force frame 6 does not necessarily have to be installed in the excavation groove 9. For example, a small reaction force frame is detachably installed on the main body frame 12 of the horizontal multi-axis rotary excavator 10. Alternatively, a small reaction force frame may be brought into contact with the preceding frame 8 as a reaction force receiver.

  As described above, the cleaning device 1 according to the present embodiment can push out the cleaning jig 2 at a desired depth position in the excavation groove 9 and clean the joining surface 81 of the preceding element 8 until the desired depth is reached. Since the cleaning jig 2 does not come into contact with any one of them, when cleaning the joining surface 81 at a desired depth position, the joining surface of the joining surface is surely used by using the cleaning jig 2 in a clean state. It is possible to remove deposits.

  Further, the deposits removed from the joining surface 81 are sucked together with the stable liquid filled in the excavation groove 9 by the mud pump provided in the horizontal multi-axis rotary excavator 10 and are grounded by the mud pipe. Therefore, it does not settle in the excavation groove 9.

  Needless to say, the cleaning device 1 of the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the spirit of the present invention.

  In this Embodiment, although the sliding direction at the time of removing the deposit | attachment of the vertical placing surface 81 with the cleaning jig 2 was made into the perpendicular downward direction, it is not limited to this. For example, after the cleaning device 1 is lowered to the lower end position of the preceding element 8, the protrusion 21 of the cleaning jig 2 may be brought into contact with the joining surface 81 and slid upward from the lower end toward the upper end. Alternatively, it may be slid vertically upward or downward while being swung vertically.

  Further, in the present embodiment, the cleaning jig 2 is installed on the main body frame 12 via the expansion / contraction device 3, but as a reference example, for example, there is no cleaning in which the backfill layer 13 does not exist above the preceding element 8. If there is nothing that contaminates the jig 2, the cleaning jig 2 may be installed on the main body frame 12 without using the telescopic device 3 as shown in FIG. 6.

  In this case, the cleaning jig 2 is installed on the detachable frame 15 with respect to the main body frame 12 to be a detachable attachment part. In this way, when performing excavation of the excavation groove 9 and formation of irregularities on the joining surface 81 of the preceding element 8 by the horizontal axis rotary excavator 10, the cleaning jig 2 is removed from the main body frame 12, At the time of cleaning, the horizontal jig rotary excavator 10 can function as the cleaning device 1 by attaching the cleaning jig 2 to the main body frame 12.

  Furthermore, in this Embodiment, as shown in FIG. 7, you may provide the brush cleaning tool 5 in the cutter drum 11 of the horizontal multi-axial rotary excavator 10 which comprises the cleaning apparatus 1. As shown in FIG.

  The brush cleaner 5 includes a brush body 51 and an attachment base 52 provided at the base end of the brush body 51, and the attachment base 52 is attached to and detached from a holder 111 provided on the outer peripheral surface of the cutter drum 11. It is installed freely. In addition to the brush cleaning tool 5, the holder 111 can be detachably mounted with cutting teeth 112 used for excavation of the excavation groove 9 and formation of irregularities on the joining surface 81 of the preceding element 8.

  Therefore, when the horizontal multi-axis rotary excavator 10 is used for excavation of the excavation groove 9, when the cutting teeth 112 are attached to the holder 111 and the horizontal multi-axis rotary excavator 10 is used for the cleaning device 1, The brush cleaning tool 5 is attached to the holder 111.

  In this way, the cleaning device 1 appropriately combines the joining surface 81 of the preceding element 8 with the cleaning device 2 as well as the cleaning device 2 according to the physical properties of the adhering material as well as the cleaning device 2. Can be cleaned.

DESCRIPTION OF SYMBOLS 1 Cleaning apparatus 2 Cleaning jig 21 Protrusion 3 Expansion / contraction apparatus 4 Injection apparatus 41 Injection hole 5 Brush cleaning tool 51 Brush 52 Mounting base 6 Reaction force frame 7 Flat plate 8 Leading element 81 Transfer surface 9 Excavation groove 10 Horizontal multi-axial rotary excavation Machine 11 Cutter drum 111 Holder 112 Cutting teeth 12 Body frame 13 Backfill layer 14 Ground 15 Detachable frame

Claims (3)

A cleaning device for use in building a continuous underground wall by succeeding a succeeding element to a preceding element,
A cutter drum that forms irregularities by cutting the joining surface of the preceding element, and a horizontal multi-axis rotary excavator comprising a main body frame in which the cutter drum is installed at the lower end;
A cleaning jig disposed in the main body frame in a state of being pulled inward from the side end face facing the preceding element;
A telescopic device that pushes out the cleaning jig until it comes into contact with the joining surface of the preceding element;
A cleaning device comprising: The cleaning device according to claim 1,
A cleaning device, wherein the cleaning jig is made of a plate material provided with a plurality of projections having wear resistance and bending resistance on the surface. In the cleaning device according to claim 1 or 2,
A cleaning apparatus comprising an ejection device that ejects a fluid in the vicinity of the cleaning jig toward the pushing direction of the cleaning jig.