JP2011251257A - Concrete placing joint surface processing device and system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To efficiently treat the joint surface of concrete without using a heavy industrial machine in combination.SOLUTION: The concrete placing joint surface processing device 1 is provided with a casing 4 capable of covering the concrete joint surface 3, a joint member 5 penetrated though and arranged in the bottom of the casing and a high pressure water jetting nozzle mechanism 6 connected to the casing side end part of the joint member. The high pressure water jetting nozzle mechanism 6 is constituted so that the whole may be freely rotatable around the axis A of a member of a shaft 8 by extending two arms 9a, 9b from the tip of the shaft 8 to left and right two directions and allowing the base end side of the shaft 8 to be held by a bearing 7 provided in the joint member 5. The arm 9a, 9b are respectively provided with jetting nozzles 10a, 10b. The jetting nozzles 10a, 10b are constituted so that the jetting direction may be turned not to a direction of an axis A of the member but to a direction turned by an angle of θ to the former direction around the axis of the member of the arms 9a, 9b.

Description

  The present invention relates to a concrete joining surface treatment apparatus and system suitable for treating concrete joining surfaces, particularly vertical joining surfaces.

  In constructing a concrete structure, a boundary resulting from different placement times of concrete occurs as a joint, but it is generally difficult to avoid the occurrence of the joint itself.

  For this reason, make a construction plan so that the joints come to the place where shear force is as small as possible, and at the time of construction, remove the poor quality concrete existing in the surface layer of the preceding concrete so that the joints do not become cold joints. At the same time, the connecting surface needs to be rough.

  Here, as methods for treating the joint surface of concrete, cutting with a wire brush, shot blasting using sand or metal particles as an abrasive, chipping using a tool, etc. are known. As time elapses, the hardening of the concrete gradually proceeds, and it becomes difficult to remove the concrete surface layer by the above-described method. In addition, since the chipping method involves dust and noise, it is difficult to ensure a good working environment and there is a concern about the influence on the surroundings.

  Therefore, a method of delaying the hardening of the concrete surface layer using a retarder mainly composed of sodium gluconate or the like is widely adopted.

  Specifically, in the case of a horizontal joint, in the case of a vertical joint, spray a retarder immediately after placing the preceding concrete, and wash the concrete surface with high-pressure water at an appropriate time when the lower layer part has hardened. Applies a retarder in advance to the inner surface of the dam plate constituting the mold, and after placing the concrete in such a state, the mold is removed at an appropriate time and the exposed surface is washed with high-pressure water. As a result, the surface layer portion of the preceding concrete is removed and the joint surface is made rough.

  According to such a method, it is possible to efficiently process even when the joining surface is wide due to the combination of securing the working time with the retarder and facilitating the work with the high-pressure water jet.

  On the other hand, various devices capable of performing concrete grinding or performing latency treatment by high-pressure water jet are known (Patent Documents 1 to 3).

JP-A-10-77621 JP 2000-141354 A JP 2002-177903 A

  Among these, in the green cut device described in Patent Document 1, uniform latency can be removed by the rotating nozzle unit. Further, in the concrete surface polishing apparatus described in Patent Document 2, uniform rotation of the concrete is enabled by the rotating nozzle mechanism, and the rotating nozzle mechanism is housed in the casing, so that the splashing water and the washing water are scattered. In addition, they can be recovered by a vacuum suction mechanism attached to the casing.

  However, these devices all drive the rotary nozzle unit and the rotary nozzle mechanism by a hydraulic motor, which necessitates an increase in the size of the device, and the weight increases accordingly.

  Therefore, all of the above-mentioned devices are limited to cases where heavy equipment can be used together and the processing area is large, and when it is difficult to use heavy equipment, for example, places where there are narrow places or empty head restrictions, or heavy equipment is used. In the case of inefficiency, for example, when the processing area is relatively small, there is a problem that it is not suitable.

  The present invention has been made in consideration of the above-described circumstances, and provides a concrete joining surface treatment apparatus and system capable of efficiently treating a concrete joining surface without using a heavy machine together. Objective.

  In order to achieve the above object, the concrete joining surface treatment apparatus according to the present invention, as described in claim 1, is provided with a sealing material along the periphery of the opening, and the concrete joining surface is a treatment target. A box-shaped casing capable of covering the concrete surface so as to be in contact with the casing, a joint member disposed through the casing, and a high-pressure water injection nozzle connected to the casing side end of the joint member And a high-pressure water injection nozzle mechanism, the shaft having a proximal end held by the joint member so as to be rotatable around the material axis, and extending radially from the distal end of the shaft. A high-pressure water supply port that communicates with the high-pressure water injection nozzle mechanism, and has an opposite end portion of the joint member. A high pressure water supply pump can be connected to the high pressure water supply port and a drain port communicating with the internal space of the casing can be provided in the casing so that a vacuum pump can be connected to the drain port. The high pressure water injection is configured by configuring the injection nozzle so that the injection direction from the injection nozzle is rotated by a predetermined angle around the material axis of the arm with respect to the material axis direction of the shaft. The nozzle mechanism is rotated around the shaft of the shaft by the high-pressure water jet force.

  In the concrete joining surface treatment apparatus according to the present invention, the arm is composed of a plurality of arms whose radial directions are different from each other, and the eccentric distances of the spray nozzles respectively provided on the arms from the shaft are mutually different. The injection nozzles are positioned so as to have different dimensions.

  In the concrete joining surface treatment apparatus according to the present invention, a gripping portion is connected to the opposite end of the joint member, and the high pressure water supply port is provided in the gripping portion.

  The concrete joining surface treatment apparatus according to the present invention includes a non-contact type distance sensor for measuring a cutting depth of the concrete joining surface when the concrete joining surface is covered with the casing. A display means is provided that is attached to the tip of the shaft or the arm so as to face the joining surface and near the material axis of the shaft, and that acquires and displays cutting depth data measured by the distance sensor. It is a thing.

  Further, the concrete joining surface treatment apparatus according to the present invention attaches a traveling wheel that travels on the concrete joining surface to a traveling frame body and connects the traveling frame body to the casing, and a driving shaft of the traveling wheel. Are connected to the shaft via a predetermined power transmission mechanism.

  Further, in the concrete joint processing system according to the present invention, a sealing material is provided along the periphery of the opening so that the sealing material comes into contact with the concrete joining surface to be processed. A box-shaped casing capable of covering the concrete surface, a joint member disposed through the casing, a high-pressure water jet nozzle mechanism connected to a casing side end of the joint member, and the high-pressure water A high-pressure water supply pump connected to a high-pressure water supply port provided at the opposite end of the joint member so as to communicate with the spray nozzle mechanism; and provided in the casing so as to communicate with the internal space of the casing. A vacuum pump connected to the drain port, and the joint member so that the high-pressure water injection nozzle mechanism is rotatable about the material axis. A shaft having a proximal end held therein, an arm extending in a radial direction from the distal end of the shaft, and an injection nozzle provided on the arm, the injection direction from the injection nozzle being the shaft By configuring the injection nozzle so as to be rotated by a predetermined angle around the material axis of the arm with respect to the material axis direction of the arm, the high-pressure water injection nozzle mechanism It is designed to rotate around the material axis.

  In the concrete joint processing system for concrete according to the present invention, an air introduction opening is provided in a drainage hose connecting the drainage port and the vacuum pump, and the opening area of the air introduction opening is adjustable. It is configured.

  In order to process a concrete joint surface using the concrete joint surface processing apparatus and system according to the present invention, first, a concrete provided with a seal material provided along the peripheral edge of the opening of the box-shaped casing The casing is pressed against the joining surface so as to be in contact with the joining surface, and the joining surface is covered with the casing.

  In such a state, water tightness is ensured between the casing and the concrete connection surface.

  Next, a high-pressure water supply pump is connected to the high-pressure water supply port provided at the opposite end (the side opposite to the casing side) of the joint member.

  In this case, since the high-pressure water supply pump communicates with the high-pressure water injection nozzle mechanism, the high-pressure water supplied from the high-pressure water supply pump flows from the shaft of the high-pressure water injection nozzle mechanism to the arm via the joint member. After that, the sprayed surface of the concrete to be treated is washed while being sprayed from the spray nozzle.

  About the water used for washing and the concrete surface layer removed by washing, the casing is sealed by a vacuum pump connected to a drain outlet provided in the casing without splashing outside due to the water tightness of the casing and the concrete connection surface. Sucked out of.

  Here, the injection nozzle is configured such that the injection direction is a direction rotated by a predetermined angle around the material axis of the arm with respect to the material axis direction of the shaft. As a reaction, a reaction force component in a direction rotating around the material axis of the shaft acts on the arm.

  Since the shaft is held by the joint member so as to be rotatable around the material axis, the reaction force component due to the injection acts as a torque on the high pressure water injection nozzle mechanism, and the high pressure water injection nozzle mechanism is Rotate around the shaft axis.

  That is, according to the present invention, the high-pressure water injection nozzle mechanism is rotated by the reaction when high-pressure water is injected without separately providing a rotational drive means such as a hydraulic motor or an electric motor, thereby the concrete joining surface. Can be cleaned over a wide range centering on the shaft of the shaft.

  The specific configuration of the arm is arbitrary, a configuration that branches in a T-shape from the tip of the shaft in a direction orthogonal to the shaft, and when viewed from the shaft direction of the shaft, a linear shape centered on the shaft In addition to the typical configuration, it can be configured to extend radially from the shaft, for example, every 120 ° or 90 °, and the position and number of the injection nozzles are arbitrary. If each of the injection nozzles is positioned so that the eccentric distances from the shaft of the injection nozzles provided in the respective arms are different from each other in the radial direction, each injection nozzle is positioned. The area on the concrete joint surface covered by the nozzle is a concentric circular area centered on the shaft axis of the shaft. By adjusting the distance to the Ried striking passage surface, it is possible to process a large circular area the very best concrete joint surface.

  The injection direction angle of the injection nozzle is, for example, 1 ° to 45 °, preferably 1 ° to 30 °. When the casing is pressed against the concrete connection surface so that the shaft direction of the shaft is perpendicular to the concrete connection surface, if it is less than 1 °, the reaction force in the direction of rotation around the material axis of the shaft will be the reaction during injection This is because almost no components are generated, and when the angle exceeds 45 °, the injection energy to the concrete joining surface is greatly reduced.

  It is arbitrary how to grasp the cutting depth when processing the concrete connection surface, for example, it can be estimated empirically considering the injection time of high-pressure water and the properties of the placed concrete. It is possible to adopt such a method that the injection of high-pressure water is stopped and the casing is once separated from the concrete joining surface, and the cutting depth at the exposed concrete joining surface is visually confirmed. A non-contact type distance sensor for measuring a cutting depth of the concrete joint surface when the concrete joint surface is covered with the casing so as to face the concrete joint surface and the shaft of the shaft A display that is attached to the tip of the shaft or the arm so as to be in the vicinity, and obtains and displays cutting depth data measured by the distance sensor. If a step is provided, the cutting depth can be objectively grasped without interrupting the joining surface treatment, and a non-contact type distance sensor is arranged in the vicinity of the shaft of the shaft. It is also possible to perform measurement without being affected by the water jet.

  The concrete joining surface treatment apparatus according to the present invention is applicable to both the treatment of the horizontal joining surface and the treatment of the vertical joining surface, and connects the gripping portion to the opposite end of the joint member and If it is set as the structure which provided the high pressure water supply port in the holding part, the workability | operativity of the process with respect to a vertical joining surface will improve markedly by having a holding part so that the material axis of a shaft may become substantially horizontal.

  Here, if the traveling wheel traveling on the concrete connection surface is attached to the traveling frame body, the traveling frame body is coupled to the casing, and the drive shaft of the traveling wheel is coupled to the shaft via a predetermined power transmission mechanism. The entire apparatus can be moved using the fluid energy of high-pressure water, and in the case of a vertical transfer surface, it is only necessary to pay attention to the traveling direction of the entire apparatus, and the operator does not need to support its own weight.

  The power transmission mechanism can be configured by appropriately combining pulleys, belts, chains, rods, various gears, clutches and other known power transmission elements.

  In the case of a vertical transfer surface, the negative pressure in the casing is reduced so that the entire device is pressed against the vertical transfer surface without falling due to its own weight, and the pressing force remains small enough to move horizontally. adjust.

  Here, if the drainage hose connecting the drainage port and the vacuum pump is provided with an air introduction opening and the opening area of the air introduction opening is adjustable, the vacuum pump can be operated. It becomes possible to adjust the magnitude of the negative pressure in the casing at hand.

Schematic of the joining surface processing apparatus 1 and the system 2 according to the present embodiment. It is explanatory drawing which showed the rotation principle of the high-pressure water injection nozzle mechanism 6, (a) is an arrow view seen from the BB line direction, (b) is a force vector diagram, (c) is CC line. The arrow view seen from the direction. It is the figure which showed a mode that the opening 31 for air introduction and the adjustment ring 32 which restrict | limits the opening area were provided in the drainage hose 17, (a) is a side view, (b) is the cross section along the DD line direction Figure. The whole figure which showed a mode that the injection gun 41 as a holding part was interposed between the concrete joining surface processing apparatus 1 and the high pressure water supply pump 13. FIG. The figure which showed the arrangement | positioning deformation pattern of an arm. FIG. 6 is a layout diagram of a non-contact type distance sensor 61 and a liquid crystal panel 62 that acquires and displays cutting depth data thereof. It is a figure of the concrete joint surface processing apparatus which concerns on a modification, (a) is a horizontal sectional view, (b) is the arrow line view seen from the EE line direction.

  DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments of a concrete joining surface treatment apparatus and system according to the present invention will be described with reference to the accompanying drawings. Note that components that are substantially the same as those of the prior art are assigned the same reference numerals, and descriptions thereof are omitted.

  FIG. 1 is a view showing a concrete joining surface treatment apparatus 1 and its system 2 according to the present embodiment. As can be seen from the figure, the concrete joining surface treatment apparatus 1 according to this embodiment includes a bottomed cylindrical casing 4 capable of covering a concrete joining surface 3 to be treated, and a bottom portion of the casing. And a high pressure water injection nozzle mechanism 6 connected to the casing side end of the joint member.

  The high-pressure water jet nozzle mechanism 6 has a shaft 8 held on a bearing 7 provided on the joint member 5 so that the shaft 8 can rotate around its axis, and from the tip of the shaft 8. Two arms 9a and 9b are extended in the radial direction, in this embodiment in the left and right directions, and formed into a T-shape, and the nozzles 10a and 10b are provided on the arms, respectively. That is, the entire shaft 8 can rotate around the material axis A.

  A high pressure water supply port 11 communicating with the high pressure water injection nozzle mechanism 6 is provided at the opposite end of the joint member 5, and a high pressure water supply pump 13 is connected to the high pressure water supply port via a high pressure hose 12. Thus, the fresh water stored in the fresh water tank 14 can be jetted from the jet nozzles 10 a and 10 b of the high-pressure water jet nozzle mechanism 6 toward the concrete joining surface 3.

  As the high-pressure water supply pump 13, for example, a pump having a pressure of about 1 to 20 MPa and a flow rate of about 2 to 10 L / min can be selected.

  The casing 4 is provided with a sealing material 15 along the inner peripheral edge of the opening, and the casing 4 is pressed against the concrete connecting surface 3 so that the sealing material abuts against the concrete connecting surface 3. The concrete connection surface 3 can be covered with the space kept in a watertight state.

  Further, the casing 4 is provided with a drain port 16 that communicates with the internal space thereof, and by connecting a vacuum pump 18 to the drain port via a drain hose 17, Without splashing the concrete debris removed by the washing water, the solid content is separated by the solid-liquid separator 19 by sucking it out of the casing 4 and, if necessary, fine particles are removed from the separated water. After that, it is returned to the fresh water tank 14 for circulation.

  The vacuum pump 18 can be selected, for example, with a flow rate of 10 L / min and a tank capacity of about 50 L.

  The casing 4 is provided with a splash preventing brush 20 along the outer periphery of the opening, and even if there is a concrete glass that has passed through the sealing material 15, this remains in the casing 4 and is directed outward. It is designed to prevent scattering.

  FIG. 2A is an arrow view of the injection nozzles 10a and 10b as seen from the direction of the line BB in FIG. As can be seen from the figure, when the concrete joining surface treatment apparatus 1 is held so that the material axis A of the shaft 8 is orthogonal to the concrete joining surface 3, the injection direction of the injection nozzles 10a and 10b is determined by the material axis A. The direction of rotation about the material axis of the arms 9a and 9b by an angle θ relative to that direction, that is, the injection directions of the injection nozzles 10a and 10b when viewed from the ends of the arms 9a and 9b The injection nozzles 10a and 10b are configured to face the direction rotated by an angle θ clockwise from the material axis A, respectively.

  The injection direction angle θ of the injection nozzles 10a and 10b is, for example, 1 ° to 45 °, preferably 1 ° to 30 °. When the casing 4 is pressed against the concrete joining surface so that the material axis A of the shaft 8 is orthogonal to the concrete joining surface 3, if it is less than 1 °, it will rotate around the material axis of the joint member 5 as a reaction during injection. This is because there is almost no reaction force component in the direction in which it is applied, and if it exceeds 45 °, the injection energy to the concrete joining surface 3 is significantly reduced, and the original surface layer of the concrete cannot be removed. .

  The injection nozzles 10a and 10b are preferably configured such that the above-mentioned angle θ can be arbitrarily set by configuring the injection direction so as to be rotatable around the material axes of the arms 9a and 9b.

  In processing the concrete joining surface 3 using the concrete joining surface treatment apparatus 1 according to the present embodiment, the high-pressure hose 12 is previously connected to the high-pressure water supply port 11 provided at the opposite end of the joint member 5. The high pressure water supply pump 13 is connected via the drainage port 16 and the vacuum pump 18 is connected to the drainage port 16 provided in the casing 4 via the drainage hose 17, thereby supplying the high pressure water to the concrete connection surface 3. A concrete joint surface treatment system 2 capable of a series of treatments such as jet cleaning of high-pressure water, recovery of cleaning water and concrete glass is constructed.

  On the other hand, with respect to the joining surface to be treated, a delay agent is applied or applied in advance to the inner surface of the dam plate that constitutes the mold before placing the preceding concrete, so that the mold can be removed after the mold is removed. Make sure that the surface layer of the exposed concrete surface does not harden immediately.

  As the retarder, use a film type manufactured and sold by Sanko Co., Ltd. under the product name “Ritamate”, or a coating type manufactured and sold by Sanshin Industrial Co., Ltd. under the product name “Heibau”. be able to.

  Next, the sealing material 15 provided along the peripheral edge of the opening of the casing 4 while holding the concrete joining surface treatment apparatus 1 so that the material axis A of the shaft 8 is orthogonal to the concrete joining surface 3 is provided. The casing is covered with the casing 4 by pressing the casing against the concrete connecting surface 3 so as to come into contact with the concrete connecting surface 3.

  In such a state, water tightness is ensured between the casing 4 and the concrete connection surface 3.

  Next, by driving the high-pressure water supply pump 13, the fresh water stored in the fresh water tank 14 is pumped by the high-pressure hose 12 and supplied to the joint member 5 of the concrete joining surface treatment apparatus 1 as high-pressure water. .

  If it does in this way, after flowing through the flow path formed in the inside of the joint member 5, the high pressure water is jetted from the jet nozzles 10a and 10b through the arms 9a and 9b from the shaft 8 of the high pressure water jet nozzle mechanism 6. The

  Here, the high-pressure water sprayed from the spray nozzles 10a and 10b collides with the concrete joining surface 3, and the surface layer portion of the concrete joining surface 3 is removed by the collision energy at that time. As described above, the injection direction 10b is inclined with respect to the material axis A of the shaft 8 in the direction rotated by the angle θ around the material axis of the arms 9a and 9b.

Therefore, the reaction force P acting on the arms 9a and 9b as a reaction when high-pressure water is injected is only a component P _V parallel to the material axis A and opposite to the material axis A as shown in FIG. the absence of such items as may occur component P _H of the direction perpendicular to the wood shaft a.

As reaction force component P _H is shown in FIG. (C), to generate a torque T of the timber axis A around, by such torque T, high pressure water injection nozzle mechanism 6 is rotated as shown in FIG arrow To do.

  That is, the high pressure water spray nozzle mechanism 6 cleans the concrete joint surface 3 with high pressure water while rotating around the material axis A by the reaction of the high pressure water sprayed from the spray nozzles 10a and 10b.

  On the other hand, during the above-described cleaning with high-pressure water, the vacuum pump 18 is operated simultaneously, thereby sucking the used cleaning water in the casing 4 and the concrete glass generated thereby, out of the casing 4, The separator 19 separates and removes the concrete glass, and the water is returned to the fresh water tank 14 and reused.

  Here, the casing 4 is combined with the sealing action by the sealing material 15 and the negative pressure pressing action by the vacuum pump 18 to ensure the water tightness of the internal space. There is no risk of splashing.

  What is necessary is just to make it wash | clean with the high-pressure water mentioned above, shifting the casing 4 suitably vertically and horizontally.

  As described above, according to the concrete joining surface treatment apparatus 1 and the joining surface treatment system 2 according to the present embodiment, high-pressure water is injected without separately providing a rotational drive means such as a hydraulic motor or an electric motor. The high-pressure water spray nozzle mechanism 6 is rotated by the reaction at the time, so that the concrete joint surface 3 can be cleaned in a wide range.

  Accordingly, the entire apparatus can be significantly reduced in weight without degrading the function of the cleaning process. As a result, the weight of the entire apparatus can be supported by the differential pressure between the air pressure in the casing 4 and the atmospheric pressure. Become.

  For this reason, it is sufficient to lightly add a hand during the cleaning process, and the workability when processing the vertical joint surface is remarkably improved.

  In the present embodiment, the sealing material 15 is attached to the inner peripheral edge of the opening of the casing 4, but when the casing 4 is moved, there is a risk of peeling or coming off due to friction with the concrete connecting surface 3. What is necessary is just to select suitably a more firm attachment method including the structure penetrated into the groove | channel formed along the thickness cross-sectional center of the casing 4. FIG.

  Although not particularly mentioned in the present embodiment, when the casing 4 is shifted vertically and horizontally, if the casing 4 is difficult to shift due to a large negative pressure, the drainage hose 17 has a long hole shape as shown in FIG. An air introduction opening 31 is provided, and an adjustment ring 32 that is rotatable around the hose material shaft is provided so as to surround the air introduction opening, so that the opening area of the air introduction opening 31 can be adjusted. When it is desired to shift the casing 4 with respect to the concrete transfer surface 3, the adjustment ring 32 is turned to open the air introduction opening 31, and air is introduced from the air introduction opening to reduce the drawing force by the vacuum pump 18. What is necessary is just to make the negative pressure in the casing 4 small.

  Further, in the present embodiment, for convenience of explanation, the vacuum pump 18 is described as being operated on the main body side. However, instead of this, as shown in FIG. 4, a gripping portion is provided in the high-pressure water supply port 11 of the joint member 5. The injection gun 41 may be connected, and the high-pressure hose 12 may be connected to the high-pressure water supply port 42 of the injection gun.

  In such a configuration, by operating the injection gun 41, it is possible to switch on and off the injection and adjust the injection pressure. In addition, about the injection gun 41, it is possible to divert the well-known injection gun or the washing | cleaning gun used for high pressure water, and abbreviate | omits detailed description here.

  Further, in this embodiment, the eccentric distances of the injection nozzles 10a and 10b from the shaft 8 are the same, but by making them different dimensions, as shown in FIG. 5 (a), two concentric circles are formed. The concrete joint surface 3 can be cleaned over the annular regions 51a and 51b.

  Further, the number of arms is arbitrary, and as shown in FIG. 5B, a total of three arms 52a, 52b, 52c are radially extended from the tip of the shaft 8 at intervals of 120 °. As shown in FIG. 5C, a configuration in which a total of four arms 53a, 53b, 53c, 53d are radially extended at 90 ° intervals is possible.

  In this arm configuration as well, as shown in the figure, the eccentric distances of the injection nozzles 54a, 54b, 54c from the shaft 8 or the eccentric distances of the injection nozzles 55a, 55b, 55c, 55d from the shaft 8 are sequentially shifted. As a result, it is possible to reliably cover the concrete joint surface 3 without overlapping or overlapping each other.

  The positions of the injection nozzles 54a, 54b, 54c and the positions of the injection nozzles 55a, 55b, 55c, 55d are variably configured along the material axes of the arms 52a, 52b, 52c and the arms 53a, 53b, 53c, 53d. Is desirable. In this respect, the same applies to the above-described embodiments, and it is desirable that the positions of the injection nozzles 10a and 10b be configured to be variable along the material axes of the arms 9a and 9b.

  Although not particularly mentioned in the present embodiment, when it is desired to perform an accurate joining surface treatment by measuring the cutting depth of the concrete joining surface 3, the concrete joining surface 3 as shown in FIG. A non-contact type distance sensor 61 for measuring the cutting depth is attached to the tip of the shaft 8 in the vicinity of the material axis A of the shaft, and display means for acquiring and displaying cutting depth data measured by the distance sensor The liquid crystal panel 62 may be attached to the casing 4. The distance sensor 61 can be constituted by a sensor using, for example, a laser or an ultrasonic wave.

  According to such a configuration, the cutting depth can be objectively grasped without interrupting the joining surface treatment, and the non-contact type distance sensor 61 is disposed in the vicinity of the material axis A of the shaft 8. It is also possible to perform measurement without being affected by high-pressure water injection.

  Further, in the present embodiment, it is assumed that the processing target area is moved by shifting the casing 4 with respect to the concrete joining surface 3, but the case where the negative pressure in the casing 4 is large has already been described. As described above, the casing 4 closely contacts the concrete joining surface 3 and the casing 4 cannot be displaced.

  Further, if the negative pressure is reduced to avoid this, it becomes difficult to support the weight of the entire apparatus by the differential pressure between the air pressure in the casing 4 and the atmospheric pressure, so that the joining surface treatment device 1 can be removed from the vertical joining surface. There is also concern about falling.

  In such a case, as shown in FIG. 7, the traveling wheels 72 and the traveling wheels 73, 73 traveling on the concrete joining surface 3 are attached to the traveling frame 71, and bolts, nuts and other connecting means (not shown). ) As appropriate, the traveling frame 71 is connected to the casing 4, and the drive shafts 80 of the traveling wheels 73 and 73 are connected to the shaft 8 via the power transmission mechanism 81.

  The power transmission mechanism 81 has a gear 74 disposed in the vicinity of the center of the drive shaft 80 of the traveling wheels 73, 73, and meshes with the worm gear 75 attached to one end of the connecting rod 76. A pulley 77 is attached to the other end, and a belt 79 is hung on a pulley 78 fixed to the pulley and the shaft 8.

  In such a configuration, the differential pressure between the air pressure in the casing 4 and the atmospheric pressure is transmitted to the traveling wheels 72 and the traveling wheels 73 and 73 via the traveling frame 71, and then acts on the concrete connection surface 3 as a ground pressure. To do. Therefore, the concrete joining surface treatment apparatus 1 is held by the concrete joining surface 3 which is a vertical wall.

  On the other hand, when high-pressure water is fed into the high-pressure water injection nozzle mechanism 6, the high-pressure water injection nozzle mechanism 6 rotates due to a reaction when the high-pressure water is injected from the injection nozzles 10 a and 10 b, and the rotational force is transmitted from the shaft 8 to the power transmission mechanism 81. Is transmitted to the drive shaft 80 to rotate the traveling wheels 73, 73, and the traveling frame 71 moves on the concrete connection surface 3 together with the casing 4 connected thereto.

  According to such a modified example, the high pressure water is not used only for cleaning the concrete joining surface 3 but also used as power for running and moving on the concrete joining surface 3. Further effective use is possible, and even when the negative pressure generated by pulling out the vacuum pump 18 is large, the negative pressure acts on the concrete connection surface 3 via the traveling wheels 72 and the traveling wheels 73 and 73. Compared with the case where it acts on the concrete joining surface 3 via the casing 4, the resistance during traveling is much smaller, and the casing 4 can be smoothly moved laterally even when the negative pressure is large.

  In addition, since the casing 4 can be smoothly moved laterally, the concrete joining surface 3 using the high-pressure water jet nozzle mechanism 6 can be continuously washed over a wide range, and the joining surface is treated. Can be performed uniformly and rapidly.

  In the present embodiment, the scattering prevention brush 20 is provided along the outer periphery of the opening of the casing 4 so that the concrete glass does not pass through the sealing material 15 and scatter outward. Therefore, the scattering preventing brush 20 may be omitted if it is possible to sufficiently prevent scattering of the concrete glass.

DESCRIPTION OF SYMBOLS 1 Concrete joint surface treatment apparatus 2 Concrete joint surface processing system 3 Concrete joint surface 4 Casing 5 Joint member 6 High pressure water injection nozzle mechanism 8 Shaft (High pressure water injection nozzle mechanism)
9a, 9b, 52a, 52b, 52c, 53a, 53b, 53c, 53d
Arm (High pressure water jet nozzle mechanism)
10a, 10b, 54a, 54b, 54c, 55a, 55b, 55c, 55d
Injection nozzle (high pressure water injection nozzle mechanism)
DESCRIPTION OF SYMBOLS 11 High pressure water supply port 12 High pressure hose 13 High pressure water supply pump 15 Sealing material 16 Drain port 17 Drain hose 18 Vacuum pump 31 Air introduction opening 41 Injection gun (gripping part)
61 Distance sensor 62 Liquid crystal panel (display means)
71 Traveling frame bodies 72, 73 Traveling wheel 80 Drive shaft 81 Power transmission mechanism

Claims (7)

A box-shaped casing capable of covering the concrete surface so that the sealing material is provided along the periphery of the opening and the sealing material is brought into contact with the concrete joining surface to be processed, and the casing is disposed through the casing. And a high-pressure water injection nozzle mechanism connected to a casing side end of the joint member, and the high-pressure water injection nozzle mechanism is attached to the joint member so as to be rotatable around a material axis. High-pressure water comprising a shaft holding the proximal end, an arm extending radially from the tip of the shaft, and an injection nozzle provided on the arm, and communicating with the high-pressure water injection nozzle mechanism A supply port is provided at the opposite end of the joint member so that a high-pressure water supply pump can be connected to the high-pressure water supply port. A drain port communicating with the partial space is provided in the casing so that a vacuum pump can be connected to the drain port, and the injection direction from the injection nozzle is the material axis of the arm with respect to the material axis direction of the shaft. By configuring the injection nozzle so as to be rotated by a predetermined angle around the shaft, the high-pressure water injection nozzle mechanism is rotated around the shaft of the shaft by the high-pressure water injection force. Concrete joining surface treatment equipment characterized by The arm is composed of a plurality of arms having different radial directions, and the injection nozzles are positioned so that eccentric distances from the shaft of the injection nozzles provided in the arms are different from each other. The concrete joining surface treatment apparatus according to 1. 2. The concrete joining surface treatment apparatus according to claim 1, wherein a gripping portion is connected to an opposite end portion of the joint member and the high-pressure water supply port is provided in the gripping portion. A non-contact type distance sensor for measuring a cutting depth of the concrete joining surface when the concrete covering surface is covered with the casing, and in the vicinity of the shaft of the shaft so as to face the concrete joining surface 2. The concrete joining surface treatment apparatus according to claim 1, further comprising a display unit that is attached to the tip of the shaft or the arm and acquires and displays the cutting depth data measured by the distance sensor. A traveling wheel traveling on the concrete connection surface is attached to a traveling frame, the traveling frame is coupled to the casing, and a drive shaft of the traveling wheel is coupled to the shaft via a predetermined power transmission mechanism. The concrete joining surface treatment apparatus according to any one of claims 1 to 4. A box-shaped casing capable of covering the concrete surface so that the sealing material is provided along the periphery of the opening and the sealing material is brought into contact with the concrete joining surface to be processed, and the casing is disposed through the casing. A joint member, a high-pressure water injection nozzle mechanism connected to the casing-side end of the joint member, and high-pressure water provided at the opposite end of the joint member so as to communicate with the high-pressure water injection nozzle mechanism A high-pressure water supply pump connected to the supply port; and a vacuum pump connected to a drain port provided in the casing so as to communicate with the internal space of the casing. A shaft whose proximal end is held by the joint member so as to be rotatable around an axis, and extended radially from the distal end of the shaft. And an injection nozzle provided on the arm, and an injection direction from the injection nozzle is rotated by a predetermined angle around a material axis of the arm with respect to a material axis direction of the shaft; By constructing the injection nozzle so as to become, the joint surface of the concrete is characterized in that the high-pressure water injection nozzle mechanism is rotated around the shaft of the shaft by the high-pressure water injection force. system. 7. A concrete joining surface treatment according to claim 6, wherein an opening for air introduction is provided in a drainage hose connecting the drainage port and the vacuum pump, and the opening area of the air introduction opening is adjustable. system.

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