JP6012665B2 - Wall crack repair equipment - Google Patents

Description

  The present invention relates to a wall crack repairing device for repairing a crack generated in a wall made of concrete or mortar by filling with a filler.

Conventionally, as this type of wall crack repairing device, for example, a device disclosed in Japanese Patent No. 4351712 (Patent Document 1) previously proposed by the present applicant is known.
As shown in FIG. 6, this crack repairing device Sa has a nozzle part 101 that is disposed at the tip of the crack K of the wall W and injects the filler into the crack K, and is connected to the nozzle part 101 and is filled with the filler in the nozzle part 101. The injection nozzle 100 having an inflow pipe 102 to be introduced and a support shaft 104 formed with a suction passage 1003 for sucking air are fixed to the wall surface Wa by suction of air through the suction passage 103 of the support shaft 104. And a suction disk 105 that can be detached from the wall surface Wa by releasing the suction, and supported by the support shaft 105 via the first universal joint 106 at an intermediate portion thereof, and the inflow pipe 102 of the injection nozzle 100 is connected to the tip of the second universal joint. An arm 108 supported via 107 and a third universal joint 109 at the rear end of the arm 108. Tip mounted wall Wa is formed and a contact member 110 which receives the moment load generated on the arm 108 during the filling of the filler by contact with the injection nozzle 100. The abutting member 110 is provided at the rear end portion of the arm 108 so as to be able to advance and retract, and is always urged in the advancing direction by a coil spring 111.

  Thereby, when filling the crack K of the wall W with the filler, the optimum position of the injection nozzle 100 is selected according to the state of the crack K of the wall surface Ka to be repaired, and the crack K near the position enters. The suction plate 105 is arranged at a position where the suction plate 105 is not placed, and the suction plate 105 is sucked and fixed to the wall surface Wa, and the injection nozzle 100 is positioned at the selected crack K. When the filler is discharged from the injection nozzle 100 in this state, the filler is filled into the crack K. At this time, a high pressure is applied to the injection nozzle 100 due to the pumping of the filler to generate a reaction force, and the arm 108 generates a moment about the horizontal axis Q perpendicular to the axis P direction. The arm 108 is centered on the horizontal axis Q. However, since the contact member 110 attached to the rear end of the arm 108 is in contact with the wall surface Wa, the moment load generated on the arm 108 can be received by the contact member 110, and therefore The suction plate 105 is not easily peeled off from the wall surface Wa. For this reason, the filler can be pumped from the injection nozzle 100 at a high pressure to reliably fill the crack K to be repaired. Further, in this case, since the contact member 110 is urged by the coil spring 111 in the advance direction, the contact member 110 is elastically contacted with the wall surface Wa. Get better.

Japanese Patent No. 4351712

  By the way, in the conventional wall crack repairing apparatus Sa, the abutting member 110 is elastically contacted with the wall surface Wa to improve the followability to the unevenness of the wall surface Wa. The injection nozzle 100 and the contact member 110 are supported at two points in the front-rear direction, so that the injection nozzle 100 and the contact member 110 depend on the unevenness of the wall surface Wa, the suction state of the suction plate 105, and the like. The contact balance with respect to the wall surface Wa becomes worse, the arm 108 wobbles and tilts in the lateral direction, and the nozzle portion 101 of the injection nozzle 100 may be lifted from the crack K or detached from the crack K. There was a problem. In this case, a leakage of the filler occurs, resulting in a filling failure or a situation where the filling cannot be performed substantially.

  The present invention has been made in view of the above problems, and the contact balance between the injection nozzle and the contact member becomes somewhat worse due to the unevenness of the wall surface, the suction state of the suction disk, etc. Another object of the present invention is to provide a wall crack repairing device that makes it difficult to tilt the arm in the lateral direction, prevents the injection nozzle from rising or detaching from the crack, and ensures that the filler can be filled into the crack. .

  In order to achieve the above object, a wall crack repairing apparatus according to the present invention comprises a nozzle portion having a tip disposed at a wall crack and injecting a filler into the crack, and a nozzle portion continuously connected to the nozzle portion. An inlet nozzle having an inflow pipe for injecting air and a support shaft formed with a suction passage for sucking air, and being adsorbed on the wall surface by suction of air through the suction passage of the support shaft, and the wall surface by suction release An adsorbing plate that can be detached from the support shaft, an arm that is supported by the support shaft via a first universal joint at an intermediate portion thereof, and that supports an inflow pipe of the injection nozzle via a second universal joint at a tip portion; An abutting member attached to the rear end portion of the arm and having a tip abutting on the wall surface and receiving a moment load generated in the arm when the filler is filled with the filler. Of the crack repair apparatus, are the contact member to a structure in which a plurality in the direction orthogonal to the axial direction of the arm. The abutting member may be configured to be elastically contacted with the wall surface, or may be configured to abut without elastically contacting.

  As a result, when filling the cracks in the wall with the filler, the optimal injection nozzle position is selected according to the crack state of the wall surface to be repaired, and it is adsorbed to the crack-free position near this position. Place the board, suck the suction board to the wall and fix it, and place the injection nozzle at the selected crack position. In this state, when the filler is discharged from the injection nozzle, the filler is filled into the crack. At this time, a high pressure is applied to the injection nozzle due to the pumping of the filler, and a reaction force is generated. A moment about the horizontal axis perpendicular to the axial direction is generated in the arm, and the arm tries to rotate around the horizontal axis. However, since the contact member attached to the rear end portion of the arm is in contact with the wall surface, it is possible to receive the moment load generated on the arm by the contact member, and therefore, the suction disk is hardly peeled off from the wall surface. For this reason, it is possible to reliably fill the crack to be repaired by pumping the filler at a high pressure from the injection nozzle.

  In this case, even if the arm is inclined in the lateral direction due to the unevenness of the wall surface or the suction of the suction disk, the arm is supported by the injection nozzle centered on the middle part and the rear side is in contact with a plurality of contacts. Since it is supported by the member, so-called support of three or more points at the front and rear is supported, so that it is possible to prevent the arm from being inclined in the lateral direction. Therefore, it is possible to prevent the injection nozzle from being lifted or detached from the crack, and to reliably fill the crack with the filler. In addition, the reliability of filler injection can be improved.

  If necessary, each of the contact members is constituted by a shaft body that can be moved forward and backward at the rear end portion of the arm, and includes a lock mechanism that locks each of the contact members at a required advance / retreat position. It has a configuration. Since each contact member can be locked at a required advance / retreat position, the balance of the plurality of contact members can be adjusted, and the support of the arm can be further stabilized.

  Further, if necessary, the shaft body is configured to have an abutting head that abuts against the wall surface and a male screw rod extending from the corresponding prefix and having a diameter smaller than that of the corresponding prefix. A rear end member formed with a plurality of insertion holes through which the male screw rod is inserted is provided, and the lock mechanism is configured by a lock nut that is screwed into the male screw rod on the lower surface side and the upper surface side of the rear end member, respectively. Yes. Since it is a simple mechanism that simply moves the shaft body forward and backward with respect to the insertion hole and locks it with the lock nut, adjustment can be easily performed.

  Furthermore, if necessary, the first universal joint includes a spherical rotating member having a through hole through which the support shaft is inserted, and a ring-shaped holding ring that rotatably holds the rotating member. A male screw is formed on the outer periphery of the support shaft, and a coil spring is loosely fitted on the support shaft in a compressed state between the upper surface of the suction plate and the lower surface of the arm, and the support is provided on the upper surface side of the arm. A restriction nut portion that is screwed into the male screw of the shaft and restricts the upward movement of the arm is provided.

  Thereby, since the suction disk is always urged to the wall surface side by the coil spring, there is no backlash, and the suction disk can be easily attached to the wall surface. In particular, it is effective for adsorption to the ceiling. Also, because the arm itself is pulled toward the suction plate side against the biasing force of the coil spring due to the suction force of the suction plate, the injection nozzle and the contact member can be pressed well against the wall surface. It is possible to prevent the injection nozzle from being lifted or detached from the crack, and to reliably fill the crack with the filler.

Furthermore, if necessary, the restriction nut portion has a female screw with which the male screw of the support shaft is screwed, and a part of one end side where the female screw is formed is arranged so that the outer periphery is directed from the base end to the tip end. A first nut constituted by a tapered taper tube which is thinned, and a female screw portion which is provided on one end side of the first nut and into which the male screw of the support shaft is screwed. The taper tube of the first nut It is comprised with the 2nd nut which has the taper recessed part which has the taper surface joined to outer periphery.
As a result, when the second nut is tightened against the first nut, the taper tube is pressed by the tapered recess to reduce the diameter, so that the female screw comes into pressure contact with the male screw of the support shaft, and the regulating nut portion is against the support shaft. Therefore, the arm can be reliably regulated. Therefore, repeated use can prevent the situation where the regulating nut part loosens and the arm moves, prevents fluctuations in the pressing force against the wall surface of the injection nozzle, and more reliably cracks the filler. Can be filled.

  If necessary, the second universal joint includes a spherical rotating member having a through-hole through which the inflow pipe is inserted, and a ring-shaped holding ring that rotatably holds the rotating member. A male screw is formed on an outer periphery of the inflow pipe, and a pair of lock nut portions are provided on the upper surface side and the lower surface side of the arm to be screwed into the male screw of the inflow pipe to lock the inflow pipe, The lock nut portion at least on the lower surface side of the lock nut portion has a female screw into which the male screw of the inflow pipe is screwed, and a part of one end side where the female screw is formed has an outer periphery directed from the base end to the tip end. A first nut constituted by a tapered taper tube which is thinned, and a female screw portion which is provided on one end side of the first nut and into which the male screw of the inflow pipe is screwed. Has a tapered surface that joins to the outer periphery. And reducing the diameter of the tapered tube is constituted by a set of the second nut having a tapered recess for pressing the tapered tube to the male thread by tightening of the nut side.

  As a result, when the second nut is tightened against the first nut, the taper tube is pressed by the tapered recess to reduce the diameter, so that the female screw comes into pressure contact with the male screw of the inflow tube, and the lock nut portion is against the support shaft. Therefore, the injection nozzle can be reliably positioned when mounted on the wall surface. For this reason, it is possible to prevent the situation where the lock nut portion is loosened and the injection nozzle moves upward due to repeated use, and the fluctuation of the pressing force against the wall surface of the injection nozzle is suppressed, and the filler is further increased. It can be ensured that the crack can be filled. In the case where both of the pair of lock nut portions are configured by a set of the first nut and the second nut, the injection nozzle can be positioned more reliably and rattling can be prevented.

  If necessary, the suction disk is provided with a suction body fixed to the support shaft, and a recess projecting from the suction body that communicates with the suction passage of the support shaft and faces the wall surface. A ring-shaped packing made of resin that is elastically contacted with the wall surface is formed, and the adsorption main body is formed of a transparent resin. When suctioning air with a vacuum pump to install the suction disk, there is a crack in a part of the suction disk, and there is a possibility that the filler is sucked from this crack and reaches the vacuum pump and damages the vacuum pump. Since the main body of the suction plate is made transparent, suction of the filler from the crack can be visually confirmed. In this case, the suction can be stopped and the suction plate can be installed in another location, so that safety is ensured. Can do.

  Further, if necessary, the nozzle portion of the injection nozzle is connected to the inflow pipe and has a tapered discharge port that gradually expands, and an elastic wall is provided on the opening edge of the nozzle body. And a resin cushion member in contact therewith. Since the discharge port of the nozzle body is formed in a tapered shape that gradually expands, the opening of the discharge port is widened, so that it can be easily aligned on the crack line, and the discharge of the filler can be performed reliably. Become.

Further, if necessary, the inlet pipe of the injection nozzle, and connect the supply pipe for supplying the filler to the inlet tube, the supply tube, provided with a connection port connected to the inlet pipe, the connection The first branch pipe, the second branch pipe, and the third branch pipe that communicate with the port and branch in three directions are provided, and each branch pipe is provided with a manual on-off valve that opens and closes each branch pipe. .
As a result, a pipe that supplies a kind of filler in the first branch pipe is connected, and a pipe that supplies another kind of filler is connected to the second branch pipe. The remaining third branch pipe is used for cleaning with air. First, when injecting a kind of filler, the on-off valve of the first branch pipe is opened and the others are closed. When another type of filler is injected, the opening / closing valve of the third branch pipe is opened, and air is fed to the pipe to clean the pipeline. Next, the opening / closing valve of the first branch pipe is closed, the third branch pipe is closed, the second branch pipe is opened, and another filler is injected. When a certain kind of filler is filled again, washing is performed in the same manner as described above. As described above, two types of fillers can be appropriately switched and injected with one apparatus, and when two types of fillers need to be injected, work efficiency is extremely improved. For example, it is extremely useful when, for example, a filler impregnating concrete for intimately blending the filler with cracked concrete is injected.

  According to the present invention, when the suction plate is sucked and fixed to the wall surface, the injection nozzle is positioned at the selected crack position, and when the filler is discharged from the injection nozzle, the unevenness of the wall surface and the suction plate suction Even if the arm is inclined in the lateral direction, the arm is supported by the injection nozzle on the center and the rear side is supported by a plurality of abutting members, so to speak, so-called three-point support is provided. Since it becomes the above support, the situation where an arm inclines in a horizontal direction can be prevented. Therefore, it is possible to prevent the injection nozzle from being lifted or detached from the crack, and to reliably fill the crack with the filler, thereby improving the reliability.

It is a perspective view which shows the crack repair apparatus of the wall which concerns on embodiment of this invention. It is a partially notched side view which shows the crack repair apparatus of the wall which concerns on embodiment of this invention. It is the sectional view on the AA line in FIG. 2 which shows the crack repair apparatus of the wall which concerns on embodiment of this invention. It is sectional drawing which shows the principal part of the crack repair apparatus of the wall which concerns on embodiment of this invention. It is sectional drawing which shows another principal part of the crack repair apparatus of the wall which concerns on embodiment of this invention. It is a perspective view which shows an example of the conventional crack repair apparatus of a wall.

Hereinafter, based on an accompanying drawing, the crack repair apparatus of the wall which concerns on embodiment of this invention is demonstrated in detail.
1 to 5 show a wall crack repairing apparatus S according to an embodiment of the present invention. A crack K is generated in the wall W and appears on the wall surface Wa. The crack K of the wall surface Wa is filled with a filler using the wall crack repairing apparatus S according to the embodiment of the present invention. As the filler, for example, two types of fillers are used: a pretreatment filler that impregnates crack K concrete to make it dense, and a main filler that closes crack K.

  The basic structure of the wall crack repairing apparatus S includes an injection nozzle 1 that injects a filler into the crack K of the wall W, and an adsorption disk that is adsorbed to the wall surface Wa by air suction and can be detached from the wall surface Wa by releasing suction. 20 and an arm 30 that is supported by the support shaft 21 that supports the suction disk 20 at the intermediate portion thereof via the first universal joint JA, and that supports the injection nozzle 1 at the tip portion via the second universal joint JB, An abutting member 50 attached to the rear end of the arm 30 and having a tip abutting against the wall surface Wa and receiving a moment load generated in the arm 30 when the filling nozzle 1 is filled with the filler.

  As shown in FIGS. 1, 2, and 5, the injection nozzle 1 has a nozzle portion 2 that is disposed at the tip of the crack K and injects a filler into the crack K, and is connected to the nozzle portion 2. An inflow pipe 3 is provided. As shown in FIG. 5, the nozzle portion 2 includes a nozzle body 5 having a tapered discharge port 4 that is connected to the inflow pipe 3 and gradually expands, and is provided on an opening edge of the nozzle body 5 on a wall surface Wa. A resin cushion member 6 that is elastically contacted is provided. The cushion member 6 is made of a highly adhesive elastic resin such as a silicone resin.

  As shown in FIGS. 1 and 2, a supply pipe 10 for supplying a filler to the inflow pipe 3 is connected to the inflow pipe 3 of the injection nozzle 1. The supply pipe 10 includes a connection port 11 connected to the inflow pipe 3, and includes a first branch pipe 12, a second branch pipe 13, and a third branch pipe 14 that communicate with the connection port 11 and branch in three directions. Each branch pipe 12, 13, and 14 is provided with a manual on-off valve 15 that opens and closes each branch pipe 12, 13, and 14. Connected to the first branch pipe 12 is, for example, a supply pipe line (not shown) supplied with a pretreatment filler that impregnates concrete with cracks K to make it dense as a kind of filler, The second branch pipe 13 is connected with a supply pipe (not shown) to which a main filler that closes the crack K is supplied as another filler. The remaining third branch pipe 14 is used for cleaning with air. The supply pipes of the first branch pipe 12 and the second branch pipe 13 are each provided with an injection pump for supplying a filler individually. FIG. 2 shows an infusion pump 16 for the second branch pipe 12.

  The suction disk 20 is fixed to a support shaft 22 in which a suction passage 21 for sucking air is formed, and is adsorbed on the wall surface Wa by suction of air through the suction passage 21 of the support shaft 22. As shown in FIG. 2, the suction disk 20 includes a disk-shaped suction body 23 whose center is fixed to a support shaft 22. The adsorption body 23 is formed of a hard transparent resin such as an acrylic resin. On the lower surface of the adsorption main body 23, a resin ring-shaped packing 24 that protrudes elastically against the wall surface Wa is projected. A ring-shaped groove 25 centering on the center is formed on the lower surface of the suction main body 23, and the base end of the packing 24 is fitted into the groove 25 and bonded with an adhesive. A recess 26 that communicates with the suction passage 21 of the support shaft 22 and faces the wall surface Wa is formed inside the ring-shaped packing 24. The packing 24 includes a first member 24a made of elastic resin on the base end side, and a second member 24b made of elastic resin having high adhesion such as a silicone resin laminated on the first member 24a and contacting the wall surface Wa. Consists of. A vacuum pump 27 (FIG. 2) is connected to the suction passage 21.

  The arm 30 is formed in the shape of a metal rod such as stainless steel having a rectangular cross section, and an elliptical through-hole 31 is formed in the front and rear for weight reduction. The first universal joint JA includes a spherical rotating member a having a through hole through which the support shaft 22 is inserted, and a ring-shaped holding ring b that rotatably holds the rotating member a. The holding ring b is fitted in a through recess 32 formed in an intermediate portion of the arm 30 and is fixed to be removed by a pair of bolts 33 on the upper surface. A coil spring 34 is loosely fitted on the support shaft 22 in a compressed state between the upper surface of the suction plate 20 and the holding ring b of the first universal joint JA on the lower surface side of the arm 30.

  A male screw 35 is formed on the outer periphery of the support shaft 22, and a regulation nut portion 36 that is screwed into the male screw of the support shaft 22 and restricts the upward movement of the arm 30 is provided on the upper surface side of the arm 30. ing. As shown in FIG. 4, the regulation nut portion 36 has a female screw into which the male screw 35 of the support shaft 22 is screwed, and a part of one end side where the female screw is formed has an outer periphery extending from the base end to the tip end. The first nut N1 configured with a tapered taper tube na that becomes narrower toward the first nut N1 and a female screw portion that is provided on one end side of the first nut N1 and into which the male screw 35 of the support shaft 22 is screwed. The nut N1 includes a second nut N2 having a tapered recess nb having a tapered surface joined to the outer periphery of the tapered tube na.

  Further, the inflow pipe 3 of the injection nozzle 1 is supported at the tip of the arm 30 via the second universal joint JB. The second universal joint JB includes a spherical rotating member a having a through-hole through which the inflow pipe 3 is inserted, and a ring-shaped holding ring b that rotatably holds the rotating member a. The holding ring b is held by a holder 40 that constitutes the tip of the arm 30. The holder 40 is provided with a protruding male screw portion 41, which is screwed into a female screw portion 42 having an axial line in the axial direction formed at the tip of the arm 30, and the protruding dimension can be adjusted by the degree of screwing. It has become. Reference numeral 43 denotes a lock nut that is screwed into the female screw portion 42 and is locked at a required protruding position of the holder 40. The holder 40 is provided with a lock bolt 44 that locks the rotation of the rotating member a.

  Further, a male screw 45 is formed on the outer periphery of the inflow pipe 3, and a pair of locks that are screwed into the male screw 45 of the inflow pipe 3 to lock the inflow pipe 3 on the upper surface side and the lower surface side of the arm 30, respectively. Nut portions 46 and 47 are provided. As shown in FIG. 5, the upper lock nut portion 46 is composed of a single nut. On the other hand, the lock nut portion 47 on the lower surface side has a female screw into which the male screw 45 of the inflow pipe 3 is screwed, and a part of one end side where the female screw is formed becomes thinner from the base end toward the tip end. The first nut N1 constituted by a tapered taper pipe na and a female thread portion provided on one end side of the first nut N1 and having a male screw 45 of the inflow pipe 3 screwed together are tapered of the first nut N1. A second nut N2 having a tapered surface joined to the outer periphery of the pipe na and having a tapered recess nb for reducing the diameter of the tapered pipe na by tightening to the first nut N1 side and pressing the tapered pipe na against the male screw 45; It is composed of

  A plurality of contact members 50 (a pair in the embodiment) are arranged in parallel across the axis P in a direction orthogonal to the direction of the axis P of the arm 30. Specifically, as shown in FIGS. 2 and 3, each contact member 50 is configured by a shaft body that is provided at the rear end portion of the arm 30 so as to be able to advance and retract. The contact member 50 includes a contact head 51 that contacts the wall surface Wa and a male screw rod 52 that extends from the contact head 51 and has a smaller diameter than the prefix 51. A rear end member 54 having a plurality of (one pair in the embodiment) insertion holes 53 into which the male screw rods 52 of the respective contact members 50 are inserted is fixed to the rear end portion of the arm 30 with bolts 55. ing. Reference numeral 56 denotes a cap nut screwed into the tip of the male screw rod 52.

  In addition, a lock mechanism 57 is provided for locking each contact member 50 at a required advance / retreat position. The lock mechanism 57 includes a lock nut 58 that is screwed into the male screw rod 52 on the lower surface side and the upper surface side of the rear end member 54. Since the shaft body as the contact member 50 is simply moved forward and backward with respect to the insertion hole 53 and locked by the lock nut 58, the adjustment can be easily performed.

  Therefore, when filling the crack K of the wall surface Wa with the crack repairing apparatus S of the wall W according to the present embodiment configured as described above, it is performed as follows. First, the restriction position of the upward movement of the arm 30 with respect to the support shaft 22, the protruding position of the nozzle portion 2 of the injection nozzle 1 with respect to the second universal joint JB, and the forward / backward movement position with respect to the rear end member 54 of the abutting member 50 are set in advance. adjust.

  At this time, in the support shaft 22, the regulation nut portion 36 is moved to a required position and fixed. In this fixing, the second nut N2 is tightened with respect to the first nut N1. As a result, the tapered tube na of the first nut N1 is pressed by the tapered recess nb of the second nut N2 to reduce its diameter, so that the female screw of the first nut N1 is pressed against the male screw 35 of the support shaft 22 and fixed. The Therefore, the restriction nut portion 36 is not easily moved with respect to the support shaft 22, so that the arm 30 can be reliably restricted.

  Further, in the injection nozzle 1, the injection nozzle 1 is moved forward and backward to a required position, and the pair of lock nut portions 46 and 47 are fastened and fixed to the second universal joint JB. In this case, in the lower lock nut portion 47, the second nut N2 is tightened with respect to the first nut N1. As a result, the tapered tube na of the first nut N1 is pressed and contracted by the tapered recess nb of the second nut N2, so that the female screw of the first nut N1 is pressed against the male screw 45 of the inflow tube 3 and fixed. The For this reason, the lock nut portions 46 and 47 are not easily moved with respect to the support shaft 22, so that the injection nozzle 1 can be reliably positioned when mounted on the wall surface Wa.

  Further, in the contact member 50, the pair of contact members 50 are moved forward and backward with respect to the rear end member 54 and locked by a lock nut 58 of the lock mechanism 57 at a required position. In this case, the lock nut 58 is fastened to the rear end member 54 on the lower surface side and the upper surface side of the rear end member 54. In this case, since each contact member 50 can be locked at a required forward / backward movement position, the balance of the pair of contact members 50 can be adjusted, so that the support of the arm 30 can be stabilized. Can do.

  Then, using the crack repairing apparatus S in which such adjustment is performed, the optimum position of the injection nozzle 1 is selected according to the state of the crack K of the wall surface Wa to be repaired, and there is no crack K in the vicinity of this position. The suction cup 20 is positioned at an appropriate position, the arm 30 is rotated about the vertical axis of the intermediate portion, and the tip of the nozzle portion 2 of the injection nozzle 1 is positioned at the position of the crack K of the wall surface Wa. The vacuum pump 27 is driven to evacuate the air in the recess 26 of the suction plate 20, and the suction plate 20 is sucked and fixed to the wall surface Wa. In the second universal joint JB, the lock bolt 44 is tightened in a timely manner to lock the rotating member a. In this case, since the suction disk 20 is always urged toward the wall surface Wa by the coil spring 34, there is no backlash and the attachment of the suction disk 20 to the wall surface Wa can be easily performed. In particular, it is effective for adsorption to the ceiling.

  Further, before or after the crack repair device S is mounted on the wall surface Wa, the supply pipe 10 connected to the injection nozzle 1 opens and closes the on-off valves 15 provided in the branch pipes 12, 13, and 14 and is necessary. The filler is supplied. In this state, the infusion pump (for example, the infusion pump 16 in FIG. 2) is driven. Thereby, a filler is discharged from the nozzle part 2 of the injection nozzle 1, and the filler is filled into the crack K of the wall surface Wa. In this case, since the discharge port 4 of the nozzle portion 2 of the injection nozzle 1 is formed in a tapered shape that gradually expands, the opening of the discharge port 4 is widened, so that it can be easily aligned on the line of the crack K, and the filler Can be reliably discharged.

  At the time of filling the filler, a high pressure is applied to the injection nozzle 1 by pumping the filler to generate a reaction force, and a moment M around the horizontal axis Q perpendicular to the axis P direction is generated in the arm 30. Since the abutting member 50 attached to the rear end abuts against the wall surface Wa and receives the moment load generated on the arm 30, the suction plate 20 is hardly peeled off from the wall surface Wa. For this reason, the filler can be pumped from the injection nozzle 1 at a high pressure to reliably fill the crack K to be repaired.

  In this case, even if the arm 30 tries to rotate around the axis P of the arm 30 via the first universal joint JA due to the unevenness of the wall surface Wa, the suction state of the suction plate 20, or the like, the arm 30 Since the front side is supported by the injection nozzle 1 around the middle part and the rear side is supported by the pair of abutting members 50, so-called three-point support is supported, so the arm 30 is the axis of the arm 30. It is possible to prevent the situation of turning around P and tilting laterally. For this reason, the injection nozzle 1 can be prevented from being lifted or detached from the crack K, and the filler can be reliably filled into the crack K. Further, the arm 30 itself is pulled toward the suction plate 20 against the biasing force of the coil spring 34 due to the suction force of the suction plate 20, so that the injection nozzle 1 and the contact member 50 are pressed well against the wall surface Wa. In this respect as well, it is possible to prevent the injection nozzle 1 from being lifted or detached from the crack K, and to reliably fill the crack K with the filler.

  In this way, the filler is sequentially injected into the crack K. In this case, the crack repairing device S is repeatedly used. However, in the support shaft 22 that supports the arm 30, the regulation nut portion 36 has a tapered recess nb of the second nut N2 with respect to the tapered tube na of the first nut N1. As a result of repeated use, it is possible to prevent the situation where the restricting nut portion 36 is loosened and the arm 30 moves due to repeated use. The fluctuation of the pressing force on the wall surface Wa can be suppressed, and the filler K can be more reliably filled in the crack K.

  Further, also in the inflow pipe 3 of the injection nozzle 1, the lower lock nut portion 47 easily moves relative to the inflow pipe 3 by tightening the tapered recess nb of the second nut N2 with respect to the tapered pipe na of the first nut N1. Since it becomes difficult to prevent the situation where the lock nut portion 47 is loosened and the injection nozzle 1 moves due to repeated use, the fluctuation of the pressing force against the wall surface Wa of the injection nozzle 1 is suppressed, It is possible to further reliably fill the crack K with the filler. In addition, when both of the pair of lock nut portions 46 and 47 are configured by a set of the first nut N1 and the second nut N2, the injection nozzle 1 can be positioned more reliably and the backlash can be reduced. Can be prevented.

  Furthermore, when the suction disk 20 is sucked by the vacuum pump 27 and is adsorbed to the wall surface Wa, there is a crack in a certain part of the suction disk 20, and the filler is sucked from the crack and reaches the vacuum pump 27 to be vacuumed. Although there is a possibility of damaging the pump 27, since the suction body 23 of the suction board 20 is made transparent, the suction of the filler from the crack can be visually confirmed. In this case, the suction is stopped, Since the suction disk 20 can be attached to the place, safety can be achieved.

  In the crack repair device S according to the embodiment, the supply pipe 10 including the first branch pipe 12, the second branch pipe 13, and the third branch pipe 14 is connected to the inflow pipe 3 of the injection nozzle 1. Filling can be performed by switching the type of filler. For example, first, when injecting a certain kind of filler, the on-off valve 15 of the first branch pipe 12 is opened and the others are closed. When another type of filler is injected, the open / close valve of the third branch pipe 14 is opened, and air is fed to the pipe to clean the pipeline. Next, the on-off valve of the first branch pipe 12 is closed, the third branch pipe 14 is closed, the second branch pipe 13 is opened, and another filler is injected. When a certain kind of filler is filled again, washing is performed in the same manner as described above. As described above, two types of fillers can be appropriately switched and injected with one apparatus, and when two types of fillers need to be injected, work efficiency is extremely improved.

  In the above-described embodiment, a pair of contact members 50 are provided. However, the present invention is not necessarily limited to this, and three or more contact members 50 may be provided and may be appropriately changed. Further, the material and shape of each member are not limited to the above, and may be changed as appropriate.

S Crack Repair Device W Wall Wa Wall K Crack 1 Injection nozzle 2 Nozzle part 3 Inflow pipe 4 Discharge port 5 Nozzle body 6 Cushion member 10 Supply pipe 11 Connection port 12 First branch pipe 13 Second branch pipe 14 Third branch pipe 15 On-off valve 16 Infusion pump 20 Suction plate 21 Suction passage 22 Support shaft 23 Suction body 24 Packing 26 Recess 27 Vacuum pump 30 Arm P Axis line JA First universal joint JB Second universal joint a Rotating member b Holding ring 34 Coil spring 35 Male Screw 36 Restriction nut portion N1 First nut na Tapered tube N2 Second nut nb Tapered recess 40 Holder 44 Lock bolt 45 Male screw 46, 47 Lock nut portion 50 Contact member 51 Prefix 52 Male screw rod 54 Rear end member 57 Lock Mechanism 58 Lock nut

Claims (10)

An injection nozzle having a nozzle portion, the tip of which is disposed in the crack of the wall and injecting filler into the crack, an inflow pipe which is connected to the nozzle portion and allows the filler to flow into the nozzle portion, and a suction passage for sucking air And a suction plate that is fixed to the wall surface by suction of air through the suction passage of the support shaft and can be detached from the wall surface by releasing the suction, and a first intermediate portion of the support shaft at the intermediate portion thereof. An arm that is supported via a universal joint and supports the inflow pipe of the injection nozzle via a second universal joint at the tip, and a tip that is attached to the rear end of the arm and abuts against the wall surface. In the wall crack repairing apparatus comprising a contact member that receives a moment load generated in the arm during filling of the filler by
Multiple set only the contact member in a direction orthogonal to the axial direction of the arm, the respective contact member, formed of a shaft member provided to be movable forward and backward in the rear end portion of the arm, the respective contact member A crack repairing apparatus for a wall, comprising a locking mechanism for locking at a required forward / backward position . The shaft body is configured to have a contact head that contacts the wall surface and a male screw rod extending from the corresponding prefix and having a smaller diameter than the corresponding prefix, and the male screw rod of each of the contact members is inserted through the rear end portion of the arm. a plurality of insertion holes formed was trailing member is provided that, claims the locking mechanism, characterized by being constituted by a lock nut screwed to each male screw rod at the lower surface side and the upper side of the rear end member The crack repair apparatus of the wall of 1 . The first universal joint includes a spherical rotary member having a through-hole through which the support shaft is inserted, and a ring-shaped holding ring that rotatably holds the rotary member. A male screw is formed on the outer periphery, and a coil spring is loosely fitted on the support shaft in a compressed state between the upper surface of the suction plate and the lower surface of the arm, and is screwed onto the male screw of the support shaft on the upper surface side of the arm. The wall crack repairing device according to claim 1 or 2 , further comprising a restriction nut portion for restricting the upward movement of the joint arm. The regulation nut portion has a female screw into which the male screw of the support shaft is screwed, and a tapered taper tube in which a part of one end side where the female screw is formed becomes thinner from the base end to the tip end. And a tapered surface that is provided on one end side of the first nut and has a female thread portion into which the male thread of the support shaft is screwed, and is joined to the outer periphery of the tapered tube of the first nut. 4. The wall crack repairing apparatus according to claim 3 , wherein the wall crack repairing apparatus comprises a second nut having a tapered recess. An injection nozzle having a nozzle portion, the tip of which is disposed in the crack of the wall and injecting filler into the crack, an inflow pipe which is connected to the nozzle portion and allows the filler to flow into the nozzle portion, and a suction passage for sucking air And a suction plate that is fixed to the wall surface by suction of air through the suction passage of the support shaft and can be detached from the wall surface by releasing the suction, and a first intermediate portion of the support shaft at the intermediate portion thereof. An arm that is supported via a universal joint and supports the inflow pipe of the injection nozzle via a second universal joint at the tip, and a tip that is attached to the rear end of the arm and abuts against the wall surface. In the wall crack repairing apparatus comprising a contact member that receives a moment load generated in the arm during filling of the filler by
  A plurality of the abutting members are provided in a direction perpendicular to the axial direction of the arm, the first universal joint is a spherical rotating member having a through hole through which the support shaft is inserted, and the rotating member is rotatable. A ring-shaped holding ring for holding, a male screw is formed on the outer periphery of the support shaft, and a coil spring is loosely fitted to the support shaft in a compressed state between the upper surface of the suction plate and the lower surface of the arm. An apparatus for repairing a crack in a wall, characterized in that a restriction nut portion is provided on the upper surface side of the arm so as to be screwed into a male screw of the support shaft to restrict the upward movement of the arm.   The regulation nut portion has a female screw into which the male screw of the support shaft is screwed, and a tapered taper tube in which a part of one end side where the female screw is formed becomes thinner from the base end to the tip end. And a tapered surface that is provided on one end side of the first nut and has a female thread portion into which the male thread of the support shaft is screwed, and is joined to the outer periphery of the tapered tube of the first nut. 6. The wall crack repairing apparatus according to claim 5, wherein the wall crack repairing apparatus is configured with a second nut having a tapered recess. The second universal joint includes a spherical rotary member having a through-hole through which the inflow pipe is inserted, and a ring-shaped holding ring that rotatably holds the rotary member. A male screw is formed on the outer periphery, and a pair of lock nut portions are provided on the upper surface side and the lower surface side of the arm to be screwed into the male screw of the inflow tube to lock the inflow tube, and at least the lower surface of the pair of lock nut portions The lock nut portion on the side has a female screw into which the male screw of the inflow pipe is screwed, and a part of one end side where the female screw is formed is tapered so that the outer periphery becomes narrower from the base end toward the tip end. A taper surface which is provided on one end of the first nut and has a female screw portion into which the male screw of the inflow pipe is screwed and which is joined to the outer periphery of the taper pipe of the first nut. Tighten to the first nut side Wall cracks according to any one of claims 1 to 6 only reduced in diameter tapered tube through it, characterized in that is constituted by a set of the second nut having a tapered recess for pressing the tapered tube to the male thread Repair device. The suction disk includes an adsorption body fixed to the support shaft, and a recess projecting from the suction body that communicates with the suction passage of the support shaft and faces the wall surface, and elastically contacts the wall surface. The wall crack repairing apparatus according to any one of claims 1 to 7 , wherein the apparatus is provided with a ring-shaped packing made of resin, and the adsorption main body is formed of a transparent resin. The nozzle body of the injection nozzle is connected to the inflow pipe and has a tapered discharge port that gradually expands, and a resin cushion member provided at the opening edge of the nozzle body and elastically contacting the wall surface The wall crack repairing apparatus according to any one of claims 1 to 8 , characterized by comprising : The inlet pipe of the injection nozzle, and connect the supply pipe for supplying the filler to the inlet tube, the supply tube, provided with a connection port to be connected to the inflow pipe, communicating 3 to the connecting port claim wherein the first branch pipe which branches in a direction, that a second branch pipe and the third branch pipe constitutes, provided the manual on-off valve for opening and closing the respective branch pipe to the branch pipes 1 The wall crack repair apparatus in any one of thru | or 9 .

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