JP2006341504A - Apparatus for and method of removing slope covering - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an apparatus for removing a slope covering which can chip/crush the slope covering by making the jet of a fluid containing an abradant collide against a target part, which can certainly remove the slope covering from the surface of the ground, and which can perform the removing work without adversely affecting the surrounding environment, e.g., in such a way that damage on the ground may be restrained through preventing the jet from colliding against the ground for which the removal has been finished. <P>SOLUTION: The nozzle 10 that jets the fluid containing the abradant with high pressure is arranged so as for its position to be freely adjustable, the jet striking plate 12 is arranged in front of the nozzle 10, this jet striking plate 12 is inserted to the gap generated between the slope covering 60 of the slope surface and the ground 70, and the jet of the above fluid is made to collide against the slope covering 60 while the nozzle 10 is positioned in front of the slope covering 60. By this, after the slope covering 60 is broken and removed from the surface of the ground 70, the jet of the fluid strikes the jet striking plate 12 and is hindered from advancing further to the frontal direction of the nozzle, and thus the ground 70 after elimination of the slope covering 60 can certainly be protected without alteration and the like. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention is a slope covering removal device used for construction to remove a slope covering such as sprayed mortar that is disposed for protection of slopes and has deteriorated. The present invention relates to a slope covering member removing apparatus that can reliably crush and remove only the slope covering without damaging it, and is excellent in terms of construction period and construction cost, and a removal method using the same.

  On the slopes facing the road, etc., measures have been taken for several decades to protect the slope by spraying mortar etc. on the slope surface and to prevent the occurrence of falling rocks. However, these slope coverings such as mortar have become obsolete over time, and since they have floated from the natural grounds, they no longer serve the purpose of slope protection. Therefore, there is a strong demand for new protection of the slope in the form of a greening protection slope with less adverse effects on the environment.

  In the process of removing the aged slope covering, a suspension work for physically crushing the slope covering has been conventionally performed. This hanging work is mainly performed by a method in which an operator directly applies mechanical shock and vibration to a sloped covering such as mortar using a pick hammer or a breaker, and scrapes the sloped covering. ing.

  However, when removing the sloped surface covering, impact and vibration are applied to the mortar as the sloped surface covering, so that dust is generated along with noise and fragments are scattered, resulting in deterioration of the working environment. In addition, it is dangerous for the worker and a heavy burden on the worker. In addition, in the case of work involving vibration, there is a restriction on continuous work time, and it is necessary to secure a large number of workers, which is costly and troublesome. In addition, since severe impact and vibration are repeatedly applied to the slope, not only the slope but also the surrounding ground tends to decrease in strength, and there is a risk of causing landslide and collapse of the slope upper ground.

  Furthermore, since the work is performed by providing a scaffold on the slope, it is difficult to work on a narrow scaffold, and in addition, it takes time to set up and remove the scaffold, resulting in poor work efficiency. It was. Furthermore, since these are constructions for slopes facing the road, the construction time is limited due to the limited working hours in terms of impact on road traffic, and the construction period tends to be prolonged.

As a method of destroying mortar and concrete in addition to the conventional physical impact with noise and scattering of debris, water or a fluid mixed with abrasives in water is jetted from a nozzle at a high pressure. There are methods such as water jet, abrasive jet, and the like that intensively collide with an object and wear and destroy the object, and concrete is applied to suspension as disclosed in JP-A-8-323736 and JP-A-10- 151621, and JP 2002-283338 A, and those applied to cutting columnar obstacles such as underground concrete are proposed in JP 2000-1853 A. Describes that it can prevent noise and dust during operation, and scattering of debris.
JP-A-8-323736 JP-A-10-151621 JP 2002-283338 A JP 2000-1853 A

  Conventional methods for destroying mortar and the like using a water jet or the like are those described in the above-mentioned patent documents, and when removing the slope covering, the conventional techniques shown in the above-mentioned patent documents 1 to 3 are the slopes. Although it may be diverted to crush the sloped surface covering such as mortar on the surface, immediately after the hole penetrates the sloped surface covering or the sloped surface covering is crushed, a high-pressure jet is directly applied to the ground on the back side. However, it has a problem that it is difficult to use for removing the slope covering that needs to maintain the current state of the natural ground.

  Regarding the protection of the natural ground, in the conventional method described in Patent Document 4, a technical content is shown in which a protective jig is disposed in advance behind the columnar obstacle on the front side of the nozzle to prevent damage to the natural ground. However, the columnar structure to be removed has few parts that cover the ground, and it is relatively easy to place a protective jig behind the structure. It is almost impossible to install and fix all of these protective jigs on the back side of the slope covering at the place where the plan is to be done, and it is almost impossible in terms of cost and labor. There was a problem that it was impossible to remove a part of the body itself, and it was not possible to apply it to the work on the slope as it was.

  The present invention has been made in order to solve the above-mentioned problems, and it is possible to cut and crush the slope covering by colliding a jet of a fluid containing an abrasive material with a target location, and to reliably cut the slope covering from the ground surface. A slope covering removal device that can be removed and can be removed without adversely affecting the surrounding environment, for example, by preventing the jet from colliding with the ground after removal and suppressing damage to the ground, and a method using the device It aims at providing the surface covering body removal method.

  A slope covering removal apparatus according to the present invention includes a nozzle that ejects only a fluid supplied from a predetermined supply device or a fluid containing a solid granular abrasive from the tip, and adjusts the position and inclination of the nozzle within a predetermined range. It is formed of a support device that supports the nozzle tip so as to face a predetermined slope covering body that is constructed on the slope surface, and a substantially plate-like body that is supported by the support device so that position and tilt can be adjusted, A jet receiving plate disposed at a position on the front side of the nozzle away from the nozzle by a predetermined distance and having a size that extends at least to a diffusion range of the jet flow of the fluid in the traveling state of the predetermined distance. The nozzle is positioned in front of the slope cover while being inserted into a gap between the face cover and the ground on the back side of the slope cover, and the jet of the fluid ejected from the nozzle collides with the slope cover. Together with the above Lifting device is to move continuously or intermittently along the nozzle and jet receiving plate to slope coated surface with.

  As described above, according to the present invention, the nozzle for ejecting the fluid alone or the fluid containing the abrasive is disposed so as to be adjustable in position, and the jet receiving plate is provided in front of the nozzle. Insert the fluid into the gap between the slope covering on the surface and the natural ground, and with the nozzle positioned in front of the slope covering, the fluid is jetted onto the slope covering to cause this jet to collide. And, while moving the nozzle with the jet receiving plate and moving the collision position of the jet, while expanding the crushing part while scraping and crushing the slope covering with the jet, the slope covering and the natural ground The nozzle receiving plate placed between the nozzles can prevent the nozzle from retreating due to the injection reaction force, so that the nozzle supporting force in the supporting device can be further reduced, and the supporting device can be reduced in size and cost. The most crushing efficiency between the surface coverings The slope cover can be crushed one after another while maintaining the same, and the crushing and removal work of the slope cover can be carried out efficiently without generating noise and dust. There is no reduction in strength. In addition, after the slope covering is crushed and removed from the natural ground surface, the fluid jet impinges on the jet receiving plate and is prevented from proceeding further in the nozzle front direction. There is no damage to the natural ground due to the collision, and the natural ground after removing the slope covering can be reliably protected without modification.

  In addition, the slope covering member removal apparatus according to the present invention includes a swing drive unit that swings the nozzle within a predetermined angle range around a predetermined fulcrum position, as necessary, while the fluid is ejected from the nozzle. The nozzle is swung at a predetermined period by the rocking drive unit.

  As described above, according to the present invention, the nozzle is disposed so as to be tiltable within a predetermined angle range, and the rocking drive unit that rocks the nozzle is disposed. Oscillates and widens the reach of the jet, so that the collision range of the jet on the slope cover can be expanded, and the fluid can collide against a wide range of the slope cover at once, and the support device can When moving the nozzle as a whole, if the moving direction of the entire nozzle is parallel to the shaking direction of the nozzle accompanying rocking, the crushing is progressed linearly with respect to the sloped surface covering, and the grooves smoothly The hole-shaped crushed part can be extended, the moving speed of the entire nozzle by the support device during the removal operation can be increased, and the work efficiency can be improved. The direction of movement is perpendicular In this case, the crushing width of the sloped surface covering during the movement in the whole movement direction can be expanded to efficiently proceed the crushing and removing work of the sloped surface covering over a wide range, and to the movement start position of the nozzle by the support device etc. Can be partly reduced and work time can be shortened.

  Further, the slope covering removal device according to the present invention is arranged on the support device so that the position and inclination of the slope covering body removal device can be adjusted as necessary, and can be rotated around the nozzle, and the nozzle is substantially parallel to the fluid ejection direction of the nozzle. A substantially rod-shaped receiving plate support arm that extends from the rear side to the front side and can be mounted integrally with the jet receiving plate, and the receiving plate support arm extends along the surface of the slope covering body of the nozzle with respect to the nozzle. The rotation position is adjusted around the nozzle until it is in the rear side in the movement direction.

  As described above, according to the present invention, the receiving plate support arm that supports the jet receiving plate is disposed in the vicinity of the nozzle and can be rotated around the nozzle, and the nozzle and the jet receiving plate are placed on the surface of the slope covering body during the crushing operation. When moving along the nozzle, the receiving plate support arm position with respect to the nozzle is displaced to the rear side in the nozzle movement direction, so that the uncrushed slope covering body and the receiving plate support arm located on the front side in the movement direction of the nozzle There is no interference at all, the movement of the nozzle and jet receiving plate can be carried out without difficulty, and the crushing operation can be continued smoothly.

  Further, the slope covering body removing device according to the present invention is provided integrally with the jet receiving plate, if necessary, on the front end side in the nozzle moving direction of the support device in the jet receiving plate. The tip excavation part which cuts the part near the natural ground and / or the natural ground surface and generates a gap at least more than the thickness of the jet receiving plate between the slope covering body and the natural ground is provided.

  As described above, according to the present invention, the slope covering body and / or the tip excavation section capable of excavating the natural ground is disposed on the front end side in the traveling direction of the jet receiving plate, and the tip face excavation section is operated to operate the slope covering body. By creating a new gap through which the jet receiving plate can pass between the ground and the natural ground, the gap between the slope covering and the natural ground from the beginning of the work smoothly advances the jet receiving plate. Even when the gap is not sufficiently large, the backside of the sloped surface covering the gap and the surface of the natural ground can be scraped off to always ensure a sufficient space for the jet receiving plate to advance, and the jet receiving plate integrated with the nozzle can be moved forward. You don't have to wait, and you can continue the removal process smoothly.

  Further, the slope covering removal device according to the present invention has at least a crushing blade portion that operates at a position near the nozzle of the receiving plate support arm, if necessary, and the slope that has been crushed by the fluid jet. An auxiliary crushing portion is provided that performs crushing by bringing the crushing blade portion into contact with at least a predetermined range larger than the width of the support plate support arm with respect to an uncrushed portion sandwiching the crushed gap portion of the covering.

  As described above, according to the present invention, the auxiliary crushing portion capable of crushing the sloped surface covering body is disposed in the vicinity of the receiving plate support arm, and the gap portion generated by crushing the sloped surface covering body is made larger than the width of the receiving plate support arm. Because it can be enlarged, depending on the properties of the sloped surface covering, crushing by fluid jet from the nozzle can only crush and remove in a narrow range, and the width of the gap generated by crushing can be removed to the extent that the backing plate support arm can pass. Even if it is not, the auxiliary crushing part can properly crush and remove the uncrushed part that sandwiches the gap part to secure the passage part of the receiving plate support arm, and the receiving plate support arm is passed through the crushed part and securely integrated with the nozzle The removal work can be continued.

  Further, the slope covering body removing device according to the present invention projects a predetermined dimension in each direction around the nozzle with the nozzle position as a center, if necessary, so that the nozzle front side with respect to the nozzle rear side in the fluid ejection direction of the nozzle is in a predetermined range. It is formed of a substantially bowl-like body that covers and includes a cover body that is disposed on the support device so as to be capable of adjusting the position and inclination together with the nozzle and the jet receiving plate.

  As described above, according to the present invention, the substantially saddle-shaped cover body projecting in each direction around the nozzle is disposed, and the fluid that collides with the surface of the rear slope covering body ejected from the nozzle and bounces back toward the nozzle. By receiving the components of each of the above and the scattered surface covering fragments with the cover body, it is possible to prevent the fluid from reaching the rear of each component or surface covering fragment from the nozzle, further improving the working environment. In addition to reducing the burden on the operator, adverse effects on the surroundings of the work site can be suppressed.

  Further, the slope covering removal method according to the present invention is such that a nozzle capable of jetting only a fluid or a fluid containing a solid granular abrasive from the tip faces a predetermined slope covering constructed on the slope surface. On the other hand, a jet receiving plate having a size that covers at least a diffusion range of the fluid jet at a predetermined position on the front side of the nozzle is inserted into a gap between the slope covering and the natural ground on the back side of the slope covering. In addition, the nozzle and the jet receiving plate are continuously or intermittently moved along the linear crushing / removal target site arranged and set in a substantially lattice shape in advance on the sloped surface covering, and the jetted from the nozzle It collides with a jet of fluid, executes crushing / removal of the target part, cuts and divides the slope covering into a substantially block shape, and removes each division of the slope covering from the ground surface. is there.

  As described above, according to the present invention, the nozzle for ejecting the fluid alone or the fluid containing the abrasive and the jet receiving plate disposed in front of the nozzle are set in a substantially lattice shape on the sloped covering. While moving along the site to be crushed / removed, the fluid is jetted onto the slope covering to collide with the jet, and the slope covering is crushed and removed by the crushing force of the jet to obtain a continuous linear shape. By creating a cutting site, the slope covering is cut and divided in a wide range, and the removal work of the slope covering is advanced easily and quickly in a series of steps of removing the obtained split body from the ground. This removal work can be carried out extremely efficiently compared to the case where only the manual operation is performed, and there is no generation of shock, vibration, noise and dust when removing the slope covering, and various influences on the surroundings due to the work are minimized. I can only stay. In addition, after the target area of the slope covering is crushed and removed from the natural ground surface, the jet of fluid impinges on the jet receiving plate and is prevented from proceeding further in the nozzle front direction. There is no damage to the natural ground due to the collision with the natural ground, and the natural ground after the slope covering is removed can be reliably protected without modification.

(First embodiment of the present invention)
A first embodiment of the present invention will be described below with reference to FIGS. FIG. 1 is a schematic configuration diagram of a slope covering body removing device according to the present embodiment, FIG. 2 is an explanatory diagram of a slope covering body crushing start state in the slope covering body removing device according to the embodiment, and FIG. FIG. 4 is an explanatory diagram of an operation state at the start of crushing of the jet receiving plate in the slope covering member removing apparatus according to the present embodiment, and FIG. It is operation | movement state explanatory drawing at the time of completion | finish of horizontal one-stage crushing of the jet receiving plate in the slope covering body removal apparatus which concerns on embodiment.

  As shown in the respective drawings, the slope covering body removal apparatus 1 according to the present embodiment is a nozzle 10 that ejects a fluid containing a solid granular abrasive supplied from a predetermined supply apparatus (not shown) from the tip. The nozzle 10 is supported so that the position and inclination of the nozzle 10 can be adjusted within a predetermined range, and the tip of the nozzle 10 is opposed to a predetermined slope covering body 60 constructed on the slope surface, and the nozzle 10 A substantially plate-like jet receiving plate 12 which is arranged to be position and tilt adjustable together with the nozzle 10 at a nozzle front side position separated by a predetermined distance, and swinging to swing the nozzle 10 up and down around a predetermined fulcrum position The drive unit 13 is supported on the support device 11 so that the position and the inclination of the drive unit 13 and the nozzle 10 can be adjusted together with the nozzle 10 and the jet receiving plate 12 in a state where a predetermined dimension extends in each direction around the nozzle 10 around the nozzle 10 position. That is configured to substantially and a bowl-shaped cover 14.

  The nozzle 10 is attached to the support device 11 so as to be able to swing within a predetermined angle range in the vertical direction, and includes a fluid containing a solid granular abrasive from a predetermined supply device (a mixture of solid granular abrasive in water, etc. ) Is supplied at medium or high pressure, and the fluid is ejected from the tip. The nozzle 10 is not limited to the one that supplies the fluid containing the abrasive as it is from the supply device, but only water is supplied from the supply device, and the abrasive is mixed into the water in the nozzle together. You may use the nozzle based on the conventional abrasive jet system sprayed out of a nozzle. Granular materials such as silica sand and garnet are used as the abrasive.

  In the vicinity of the nozzle 10, it is directly attached to the support device 11 and can be adjusted in position and inclination, and can be rotated around the nozzle 10, and is predetermined from the nozzle rear side to the front side substantially parallel to the fluid ejection direction of the nozzle 10. A substantially rod-shaped receiving plate support arm 15 extending in length is disposed.

  The support device 11 adjusts the position and inclination of the tip of a double-joint boom that can be extended and bent and is mounted on a stand in a range that the boom can reach, similar to that used as a concrete pump truck with a refraction boom. This is a known self-propelled carriage with a boom, and a detailed description thereof will be omitted. In addition, as this support apparatus, a wheel crane (rough terrain crane), a backhoe, etc. can also be used.

  The jet receiving plate 12 reaches a position on the front side of the nozzle 10 that is a predetermined distance away from the nozzle 10 and reaches the diffusion of the jet of the fluid ejected from the nozzle 10 that is swung by the rocking drive unit 13 in the predetermined distance traveling state. It is formed of a wear-resistant substantially plate-like body having a size sufficiently larger than the range, and is integrally attached to the tip of the receiving plate support arm 15, and the position and inclination of the support device 11 are adjusted via the receiving plate support arm 15. It is the structure which can be supported and can be rotated in the nozzle 10 front side. The portion of the jet receiving plate 12 opposite to the portion attached to the receiving plate support arm 15 has a tapered pointed shape, and the slope covering 60 and the ground 70 before the start of the crushing removal operation of the slope covering 60 are obtained. When the jet receiving plate 12 is inserted into the gap, the insertion work is facilitated by inserting from the pointed portion.

  As the wear-resistant material forming the jet receiving plate 12, a ceramic material such as alumina or silicon nitride, or a metal hard material such as tungsten carbide is used as it is in a plate shape. Further, it is possible to use a material that is bonded and integrated with a predetermined thickness to give wear resistance.

  The swing drive unit 13 is disposed at the tip of the boom 11a of the support device 11 and is connected to a part of the nozzle 10. The swing drive unit 13 swings the nozzle 10 up and down around the boom 11a mounting portion of the nozzle 10 as a swing center. This is a known swing drive mechanism, and detailed description thereof is omitted.

  The cover body 14 is a substantially bowl-shaped body that projects a predetermined dimension in each direction around the nozzle 10 around the nozzle 10 position and covers the nozzle 10 front side in a predetermined range with respect to the nozzle 10 rear side in the fluid ejection direction of the nozzle 10. The structure is formed and supported on the boom 11a of the support device 11 so that the position and the tilt can be adjusted together with the nozzle 10 and the jet receiving plate 12.

  On the inner surface of the cover body 14, the jetted fluid rebounds or the fragments of the crushed slope covering body 60 scatter and collide, so that the sheet material has absorptivity against the generated impact and sound. Is disposed. Further, a rubber material or a brush-like shape is provided on the lower peripheral edge of the cover body 14 so as to protrude forward from the end of the cover body 14 and partially contact the slope surface to eliminate a gap between the slope surface and the cover body 14. A gap closing portion 14a made of a body is provided to prevent the fragments of the slope covering body 60 from falling downward from the gap.

  Next, the removal work by the slope covering body removal device based on the above configuration will be described. For the slope covering 60 in the planned crushing and removal range, the ground surface is investigated from the ground surface using a well-known ground exploration device, and a clearance is created between the ground and the ground to achieve the purpose of protection. First, the position of the slope covering 60 to be removed is determined.

  Subsequently, the support device 11 is installed at a predetermined location near the slope such as a road below the slope, and the nozzle 10 is raised from the ground to a predetermined position on the front side of the slope by the support device 11. The jet receiving plate 12 is inserted into the gap between the slope covering 60 and the ground 70 on the back side at the point where the slope covering 60 starts to be removed from above or from the side of the slope covering 60. The nozzle 10 is positioned (see FIGS. 4A and 1).

When the nozzle 10 is positioned in front of the crushing start position of the slope covering 60, the fluid including the abrasive is supplied from the supply device (not shown) to the medium pressure while the swinging drive unit 13 starts swinging the nozzle 10. Or it supplies to the nozzle 10 through the support apparatus 11 and the supply pipe | tube 11b at high pressure {injection pressure of about 9.8 × 10 ⁶ Pa (about 100 kgf / cm ² ) or more}.

  When a fluid containing an abrasive is ejected from the vertically swinging nozzle 10 to the slope covering 60 to be removed, the slope covering 60 is scraped little by little due to a collision with a fluid jet flowing out of the nozzle 10. Then, when the shaved recess reaches a predetermined depth, the slope covering 60 is crushed at once and dropped off the surface of the natural ground 70 and removed. Even if the slope covering 60 is removed from the surface of the natural ground 70 and the jet flow from the nozzle 10 reaches a state where it can reach the depth side from the position of the slope covering 60, the jet previously inserted in the gap with the natural ground 70. The presence of the receiving plate 12 prevents the jet from going straight to the natural ground 70, and the natural ground 70 is not damaged by the jet.

  As the crushing progresses, the nozzle 10 and the jet receiving plate 12 are moved in the lateral direction along the sloped surface covering body 60 by the support device 11 to continuously crush. Since the nozzle 10 swings up and down, the jet can collide with a predetermined range in the vertical direction of the slope covering 60, and a certain removal width can be secured. During the crushing of the slope covering 60, the nozzle 10 that continues to inject fluid continues to receive a force that is pushed to the side opposite to the injection direction by the injection reaction force, but the boom 11a and the receiving plate support arm of the support device 11 The jet receiving plate 12 that is integrally connected to the nozzle 10 via 15 is located between the slope covering 60 and the natural ground 70 and is restrained from moving back and forth in the fluid ejection direction. Since the movement of the nozzle 10 in the front-rear direction is also restricted, it is possible to reliably prevent the nozzle 10 from retreating without applying a force pushing the nozzle 10 forward in the injection direction with the support device 11.

  On the other hand, during the crushing / removal operation of the slope covering 60, each component of the fluid that has been jetted and collided with the surface of the slope covering 60 or the scraped pieces of the slope covering 60 rebounded to the nozzle 10 side. However, since these components are received by the cover body 14 extending in each direction around the nozzle 10, each component of the fluid and the slope covering 60 shards are scattered to the rear of the cover body 14. This can prevent the adverse effects on the work site and its surroundings.

  When the removal of the slope covering 60 proceeds and the lateral displacement of the nozzle 10 reaches the end of the preset removal range, the positions of the nozzle 10 and the jet receiving plate 12 are moved downward by the support device 11 (FIG. 5), while continuing the injection in the same manner as described above, it proceeds in the lateral direction (opposite to the above direction) along the preset next line. At this time, the position of the receiving plate support arm 15 with respect to the nozzle 10 is adjusted to rotate around the nozzle 10 until the nozzle 10 and the jet receiving plate 12 are in the rearward direction with respect to the traveling direction of the nozzle 10 and thus the receiving plate support arm. By positioning 15 on the rear side in the nozzle traveling direction with respect to the nozzle 10, interference between the uncrushed sloped surface covering body 60 and the receiving plate support arm 15 is prevented, and smooth movement and crushing of the nozzle 10 and the jet receiving plate 12 are performed. Continuation has been realized.

  When the above steps are repeated and all the slope covering 60 to be removed is removed, the oscillation of the nozzle 10 and the fluid supply to the nozzle 10 are stopped. Then, while the fragments of the crushed slope covering 60, the drained water, and the like are collected, the nozzle 10, the jet receiving plate 12 and the like are accommodated by the support device 11 and the support device 11 is removed. Become.

  As described above, in the sloped surface removing apparatus according to the present embodiment, the nozzle 10 that ejects the fluid containing the abrasive at high pressure is disposed on the support device 11 so that the position of the nozzle 10 can be adjusted, and the nozzle 10 receives the jet flow on the front side of the nozzle 10. The plate 12 is disposed, the jet receiving plate 12 is inserted into the gap formed between the slope covering 60 and the ground 70, and the nozzle 10 is positioned in front of the slope covering 60, and the slope is Since the fluid is jetted onto the covering body 60 to cause the jet to collide, and the nozzle 10 is moved together with the jet receiving plate 12 to move the collision position of the jet, the slope covering body 60 is shaved by the jet and crushed. While the crushing portion is being expanded, the nozzle 10 can be prevented from retreating by the jet reaction plate 12 with the jet receiving plate 12 positioned between the slope covering 60 and the ground 70, and the nozzle support in the support device 11 is supported. Force can be kept smaller and supported The device 11 can be reduced in size and cost, and the slope covering 60 can be crushed one after another while maintaining the most efficient crushing efficiency between the nozzle 10 and the slope covering 60. Thus, the crushing / removing operation of the slope covering 60 can be efficiently performed. Moreover, the crushing using the jet flow does not apply impact or vibration to the ground, can prevent the strength of the ground from being lowered, and the stability of the ground is not impaired even after the removal work. Furthermore, after the slope covering 60 is crushed and removed from the surface of the natural ground 70, the jet of fluid is prevented from further impinging on the jet receiving plate 12 and heading in the nozzle front direction. There is no damage to the natural ground due to the collision with the mountain 70, and the natural ground 70 after the slope covering 60 is removed can be reliably protected without modification.

  Further, in the slope covering member removal apparatus according to the embodiment, when the movement direction of the nozzle 10 by the support device 11 changes, the receiving plate support arm 15 is behind the nozzle 10 in the movement direction of the nozzle 10. However, the present invention is not limited to this, and is not limited to this, and is not crushed such as when working on the upper end and side end of the slope covering 60 that covers the slope. When interference between the slope covering body 60 and the receiving plate support arm 15 does not occur easily, the receiving plate support arm 15 and the jet receiving member 15 are not positioned with the position of the receiving plate support arm 15 with respect to the nozzle 10 being located on the rear side in the moving direction. The plate 12 can be moved together with the nozzle 10.

  Moreover, in the slope covering body removing apparatus according to the embodiment, the end of the jet receiving plate 12 opposite to the attachment portion to the receiving plate support arm 15 is configured to have a tapered pointed shape. However, the present invention is not limited to this, and other shapes, for example, a shape that is aligned in a straight line without a sharp tip may be used.

(Second embodiment of the present invention)
A second embodiment of the present invention will be described with reference to FIGS. FIG. 6 is a schematic configuration diagram of a main part of the slope covering body removing apparatus according to the present embodiment, FIG. 7 is a plan view of the frame portion of the slope covering body removing apparatus according to the embodiment, and FIG. 8 is the embodiment. It is the front view of the jet receiving plate in the slope covering body removal apparatus which concerns on this, and an explanatory view of the surrounding state of the jet receiving plate during the removing operation.
As shown in the respective drawings, the slope covering body removing device according to the present embodiment is similar to the first embodiment in that the nozzle 20, the support device 21, the jet receiving plate 22, the swing drive unit 23, and the like. And a cover body 24. On the other hand, as a different point, a substantially frame-shaped frame portion 26 which is disposed at the tip of the boom 21a of the support device 21 and slidably supports the nozzle 20, and a receiving plate which supports the jet receiving plate 22 The auxiliary crushing portion 27 is provided integrally with the support arm 25, and the tip excavation portion 28 is incorporated in the jet receiving plate 22.

  As in the first embodiment, the nozzle 20 ejects a fluid containing an abrasive from the tip. However, the nozzle 20 is supported by the support device 21 via the frame portion 26 and is supported by the support device 21. On the other hand, it is configured to be movable within a predetermined range in the lateral direction. On the other hand, the support device 21 and the swing drive unit 23 are the same as those in the first embodiment, and a detailed description thereof will be omitted. Also, in the vicinity of the nozzle 20, as in the first embodiment, a substantially rod-shaped receiving plate support arm 25 that is rotatable around the nozzle 20 and extends a predetermined length from the rear side of the nozzle 20 to the front side is arranged. Established.

  Similarly to the first embodiment, the jet receiving plate 22 that is integrally attached to the tip of the receiving plate support arm 25 is jetted from the nozzle 20 at a position on the front side of the nozzle 20 that is a predetermined distance away from the nozzle 20. Is a structure formed of a wear-resistant substantially plate-like body having a size sufficiently wider than the reach range, but as a different point, when inserted into the gap between the slope covering 60 and the ground 70, The portion of the slope covering 60 close to the natural ground 70 and / or the tip excavation portion 28 for shaving the surface of the natural ground 70 is integrated.

  The frame portion 26 is a substantially frame-like body disposed at the tip of the boom 21a of the support device 21, and includes a rail portion 26a that is parallel to the long side of the frame and a base that is movably supported on the rail portion 26a. The nozzle 20 is mounted on the base portion 26b. The nozzle 20 is swingable and slidably moved along the rail portion 26a. The nozzle tip side frame side member of the frame portion 26 is also configured to serve as the cover body 24 that covers the nozzle 20 tip side to the rear side, and each component of the fluid and the slope covering 60 pieces to the rear side of the cover body 24 are arranged. Prevent scattering. On the lower peripheral edge of the cover body 24, a gap closing portion 24a that eliminates a gap between the slope surface and the cover body 24 is disposed as in the first embodiment.

  The auxiliary crushing portion 27 is disposed near the nozzle 20 of the receiving plate support arm 25, and includes a crushing rotary blade having a diameter larger than the width of the receiving plate support arm 25, and a drive mechanism for the rotary blade, A crushing rotary blade that rotates repeatedly is brought into contact with an uncrushed portion sandwiching a crushed void portion of the slope covering 60 that has been crushed by jetting the fluid from the nozzle 20, and the uncrushed portion is crushed. Thus, a gap through which the receiving plate support arm 25 can pass is generated. One end of the rotating shaft of the auxiliary crushing portion 27 is supported by the jet receiving plate 22 and transmits the rotational driving force to the tip excavating portion 28 incorporated in the jet receiving plate 22.

  The tip excavator 28 has a rotary blade located at a tip portion on the opposite side of the jet receiving plate 22 from the mounting portion to the receiving plate support arm 25 and a driving force transmission mechanism for the rotary blade. 22 is configured to receive a rotational driving force from the auxiliary crushing portion 27 and rotate the rotary blade at the tip of the jet receiving plate 22, and a portion near the natural ground 70 and / or natural ground of the slope covering 60. This is a mechanism for cutting the surface of the surface 70 and expanding the gap between the slope covering 60 and the natural ground 70 to be larger than the thickness of the jet receiving plate 22. In addition to the configuration using the rotary blade, the tip excavation section 28 is provided with an endless chain-like crushing blade arranged to be at least partially exposed at the tip of the jet receiving plate 22 so as to be able to circulate. The blade can be driven and continuously moved at the tip of the jet receiving plate 22 to obtain a state where excavation is possible.

  Next, the removal work by the slope covering body removal device based on the above configuration will be described. However, in the removal operation in the present embodiment, only the crushing / removal scheduled portions set in advance in a substantially lattice shape on the slope covering 60, that is, in a line that is continuous in the vertical or horizontal direction and intersecting, are crushed. The removal of the slope covering 60 is performed, and the uncovered portion of the slope covering 60 is removed by another device, and the slope covering of the slope covering 60 as a whole is performed as in the first embodiment. Removal work using the body removal device 2 is not performed.

  First, as in the first embodiment, the support device 21 is installed at a predetermined position near the lower portion of the slope covering 60 set as the removal target, and the nozzle 20 and the frame portion 26 are installed from the ground with the support device 21. Raise to a predetermined position on the front side of the slope. Then, while the jet receiving plate 22 is inserted from above or from the side into the gap between the slope covering 60 at the point where the slope covering 60 starts to be removed and the ground 70 on the back side, the front face of the slope covering 60 is obtained. The nozzle 20 and the frame part 26 are positioned in the center. In addition, when the crushing and removing direction of the sloped surface covering 60, that is, the direction in which the nozzle 20 is advanced is the lateral direction, the nozzle 20 and the jet receiving plate 22 are previously set on the frame portion 26 in a direction opposite to the advancing direction. Slide it close to the side edge.

  When the nozzle 20 is positioned in front of the crushing start position of the slope covering 60, when the slope covering and removal direction of the slope covering 60 is the vertical direction, the swing drive unit 23 starts swinging the nozzle 20. The fluid containing the abrasive is supplied to the nozzle 20 from the supply device (not shown) at medium or high pressure. When the fluid is ejected from the nozzle 20 to the slope covering 60 to be removed, the slope covering 60 is gradually scraped by the collision with the fluid jet coming out of the nozzle 20, and the shaved concave portion has a predetermined depth. When reaching this point, the collision site and the surrounding slope covering 60 are crushed at once and dropped off from the surface of the natural ground 70 and removed. Similarly to the first embodiment, even when the slope covering 60 at the jet collision site is removed and the jet can reach the back side from the position of the slope covering 60, the presence of the jet receiving plate 22 The natural ground 70 is not damaged by the jet. Further, the nozzle 20 that continues to eject fluid continues to receive a force that is pushed to the opposite side of the injection direction by the injection reaction force, but the jet receiving plate 22 that is integrally connected to the nozzle 20 as in the first embodiment. The nozzle 20 can be reliably prevented from retreating by being positioned between the slope covering 60 and the natural ground 70 and restraining the movement in the fluid jetting direction.

  As the crushing progresses, the nozzle 20 is moved in the vertical or horizontal direction along the predetermined linear crushing / removal planned portion of the slope covering 60 to continuously crush the slope covering body. When the nozzle 20 is moved in the lateral direction, only the nozzle 20 and the jet receiving plate 22 are moved within the movable range on the frame portion 26, and the boom 21a and the frame portion 26 are moved relative to the slope. Perform the crushing operation without moving it at all. Then, every time when the crushing operation in the range of the frame portion 26 is completed, the support device 21 is brought into a state where the nozzle 20 and the jet receiving plate 22 are slid on the frame portion 26 in the same manner as described above and brought close to the original side end portion. Thus, the procedure of moving the position of the frame portion 26 together with the nozzle 20 to the next removal target range and ejecting the fluid while moving only the nozzle 20 and the jet receiving plate 22 is repeated.

  On the other hand, when moving the nozzle 20 in the vertical direction, the nozzle 20 and the jet receiving plate 22 are moved little by little along the sloped covering 60 in the vertical direction by the support device 21 to continuously perform crushing. Since the nozzle 20 swings up and down, the jet can collide with a predetermined range in the vertical direction of the slope covering 60, and a certain removal length can be secured.

  Note that the position of the receiving plate support arm 25 with respect to the nozzle 20 is rotated around the nozzle 20 until the nozzle 20 and the jet receiving plate 22 are always on the rear side with respect to the traveling direction of the nozzle 20 and the jet receiving plate 22 as in the first embodiment. Thus, the nozzle 20 and the jet receiving plate 22 can be smoothly moved and continued to be crushed by passing the gap portion after the receiving plate support arm 25 crushes the slope covering 60.

  In this way, while proceeding with crushing and removal by the jet along the predetermined linear portion, the nozzle 20 that ejects the fluid collides with the jet such as a portion where a strong member is inserted and embedded in the slope covering 60. When it is clear that the sloped surface covering 60 to be cut reaches the front side of the portion that takes time, the nozzle 20 is moved so as to bypass such a portion that is difficult to be removed by crushing. The jet can collide only with a portion that can be smoothly carried out, and the cutting of the slope covering 60 can be promptly advanced, so that the work efficiency can be improved. Specifically, when the nozzle 20 is being moved in the vertical direction, the nozzle 20 is slightly slid on the frame portion 26, and when the nozzle 20 is being moved in the horizontal direction, the nozzle 20 is moved. And the nozzle 20 is returned to its original state when it passes through the portion that is difficult to crush and remove.

  As the nozzle 20 moves, the jet receiving plate 22 inserted between the slope covering 60 and the natural ground 70 also moves together. If the gap is not large enough for the insertion and movement of the jet receiving plate 22 or the ground 70 and the slope covering 60 are hard, it is difficult to insert and move the jet receiving plate 22 as it is. The tip excavation section 28 is operated to scrape the portion near the natural ground 70 and / or the surface of the natural ground 70 on the front end side of the jet receiving plate 22 in the traveling direction. As a result, a gap large enough to advance the jet receiving plate 22 is surely generated, and the jet receiving plate 22 can be smoothly moved together with the nozzle 20.

  In addition, the internal structure of the slope covering 60 is high density and hard, and the portion that can be crushed and removed by the fluid jet from the nozzle 20 is limited to a very narrow area where the jet directly collides, and the slope covering 60 is crushed. In this case, crushing and removal for a width that can pass through the receiving plate support arm 25 that should be moved together with the nozzle 20 and the jet receiving plate 22 cannot be performed on the slope covering 60. , Such as a wire mesh that is included in the slope covering 60 for reinforcement, or a pin (stopper) that is partially inserted into the natural ground 70 to securely fix the slope covering 60 to the natural ground 70 surface. When the strong auxiliary member cannot be cut only by the collision of the fluid jet and remains, the auxiliary crushing portion 27 located on the receiving plate support arm 25 on the nozzle 20 traveling direction side is operated to crush and remove the gap portion. Slope covering 60 on both sides Some or the remaining wire mesh or the like continue to crushing removed by the auxiliary crushing part 27. Along with the crushing by the auxiliary crushing portion 27, a gap portion having a sufficient width that allows the receiving plate support arm 25 to pass through can be surely generated, and the operation can be continued by moving the receiving plate support arm 25 together with the nozzle 20. .

  When the removal of the slope covering 60 proceeds and the nozzle 20 reaches the end of the preset removal site, the support device 21 moves the position of the nozzle 20 and the jet receiving plate 22 to the start position of the next scheduled site, and Similarly, the process of advancing the nozzle 20 and the like while ejecting the fluid is repeated to generate a block-shaped lump (divided body) that is cut and divided. In addition, about the linear crushing / removal plan part in the slope covering 60, it sets so that the space | interval of the grid | lattice which these may make may become large from the top to the bottom, and the method divided | segmented from others by crushing and removal The split body of the surface covering 60 is small at the upper part of the slope and large at the lower part of the slope, so that the heavier slope covering part can be easily handled manually or by other devices. This reduces the degree of danger in the case of rolling down, ensuring work safety.

  When all of the substantially grid-like crushing / removal planned portions in the slope covering 60 are removed, the oscillation of the nozzle 20 and the fluid supply to the nozzle 20 are stopped. Then, the fragments of the crushed slope covering 60, the drained water, and the like are appropriately collected and processed, while the nozzle 20, the frame portion 26, the jet receiving plate 22 and the like are accommodated by the support device 21, and the support device 21 is removed. Thereafter, each of the divided sections of the slope covering 60 in a state of being divided into a plurality of small blocks is peeled off from the ground 70 one by one by another device such as heavy machinery or by hand, and the removal operation is completed when all are collected. It becomes. In addition, you may perform the peeling removal operation | work with respect to the division body of the slope covering 60, whenever a division body arises.

  Thus, in the slope covering body removal apparatus according to the present embodiment, the nozzle 20 and the jet receiving plate 22 are moved along the crushing / removal target portion set in a substantially lattice shape on the slope covering body 60. In this case, the jet is collided with the slope covering 60, and a continuous linear cutting site is generated in the slope covering 60 due to the crushing by the jet. Therefore, the slope covering 60 is cut and divided in a wide range. Then, the removal operation of the slope covering 60 can be performed easily and quickly in a series of steps of removing the obtained divided body from the natural ground 70, and the continuous removal operation in the lateral direction of the slope can be performed, which is difficult by hand. This removal work can be carried out very efficiently compared with the case where the removal work is performed only by hand, and no noise or dust is generated when removing the slope covering 60, and various influences on the surroundings due to the work are minimized. You can stay. In addition, as in the first embodiment, the crushing using the jet flow does not apply impact or vibration to the ground, the strength of the ground can be prevented from being lowered, and the stability of the ground is not impaired even after the removal work.

  Further, in the present embodiment, a substantially frame-shaped frame portion 26 is disposed at the tip of the boom 21 a of the support device 21 so that the nozzle 20 can be slid in the horizontal direction along the frame portion 26 and is movable on the frame portion 26. Since the operation can be performed by moving only the nozzle 20 within the range, every time the crushing operation within the range of the frame portion 26 is completed, the position of the frame portion 26 may be moved to the next removal target location. In addition to the need to move the boom 21a of the support device 21 with the nozzle 20 little by little along with the progress, it is easy to automate the nozzle movement within the range of the frame portion 26, and the nozzle 20 and the support device in the crushing operation. 21 The burden on the operator can be reduced.

  In the slope covering member removal apparatus according to each of the first and second embodiments, the fluid containing the abrasive is always ejected from the nozzles 10 and 20 at a constant flow rate and pressure. Not limited to this, information relating to the properties (thickness, gap with natural ground) of the slope covering 60 for each position is acquired in advance exploration measurement for the removal target portion, and from the nozzles 10 and 20 based on this information. It is possible to optimize the crushing operation by adjusting the injection amount and injection pressure of the fluid containing the abrasive for each slope position, and crushing and removing the slope covering 60 in as short a time as possible However, it is possible to suppress wasteful energy consumption related to the supply of fluid containing abrasives and wasteful consumption of the abrasives themselves, and also improve the durability of each part through which the fluid containing abrasives circulates, thereby reducing maintenance work. Overall removal work It attained to achieve both of construction time and cost down.

  Moreover, in the slope covering body removal apparatus which concerns on each said 1st and 2nd embodiment, it is set as the structure which injects the fluid containing a solid granular abrasive | polishing material from the nozzles 10 and 20, but not only this but injection | pouring If the pressure can be set to a high pressure at which the slope covering 60 can be crushed sufficiently, the injection of only the fluid may be used.

It is a schematic block diagram of the slope covering body removal apparatus which concerns on the 1st Embodiment of this invention. It is a slope covering body crush start state explanatory drawing in the slope covering body removal apparatus which concerns on the 1st Embodiment of this invention. It is a principal part schematic block diagram of the slope covering body removal apparatus which concerns on the 1st Embodiment of this invention. It is operation | movement state explanatory drawing at the time of the crushing start of the jet receiving plate in the slope covering body removal apparatus which concerns on the 1st Embodiment of this invention. It is operation | movement state explanatory drawing at the time of completion | finish of horizontal one-stage crushing of the jet receiving plate in the slope covering body removal apparatus which concerns on the 1st Embodiment of this invention. It is a principal part schematic block diagram of the slope covering body removal apparatus which concerns on the 2nd Embodiment of this invention. It is a frame part top view of the slope covering body removal apparatus which concerns on the 2nd Embodiment of this invention. It is the front view of the jet receiving plate in the slope covering body removal apparatus which concerns on the 2nd Embodiment of this invention, and the crushing state explanatory drawing around the jet receiving plate at the time of removal operation.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Slope covering body removal apparatus 10, 20 Nozzle 11, 21 Support apparatus 11a, 21a Boom 11b, 21b Supply pipe 12, 22 Jet receiving plate 13, 23 Oscillation drive part 14, 24 Cover body 14a, 24a Gap blockage part 15 25 Support plate support arm 26 Frame portion 26a Rail portion 26b Base portion 27 Auxiliary crushing portion 28 Tip excavation portion 60 Slope covering body 70 Ground

Claims (7)

A nozzle that ejects from the tip only a fluid supplied from a predetermined supply device or a fluid containing a solid granular abrasive;
A support device that supports the nozzle in a predetermined range so that the position and inclination of the nozzle can be adjusted, and makes the nozzle tip face a predetermined slope covering body constructed on the slope surface;
It is formed of a substantially plate-like body that is supported by the support device so that the position and inclination of the nozzle can be adjusted, and reaches at least the diffusion range of the fluid jet in the traveling state for the predetermined distance at a position in front of the nozzle that is a predetermined distance away from the nozzle. A jet receiving plate arranged in a size,
The nozzle is positioned in front of the slope cover while inserting the jet receiving plate into the gap between the slope cover and the ground on the back side of the slope cover, and the jet of the fluid ejected from the nozzle The slope covering body removing apparatus, wherein the slope covering body is made to collide, and the nozzle and the jet receiving plate are continuously or intermittently moved along the surface of the slope covering body by the support device. In the slope covering body removing device according to claim 1,
A swing drive unit that swings the nozzle in a predetermined angle range around a predetermined fulcrum position;
The slope covering member removing apparatus, wherein the nozzle is swung at a predetermined period by the rocking drive unit while the fluid is ejected from the nozzle. In the slope covering body removing device according to claim 1 or 2,
The position and inclination of the support device can be adjusted and the periphery of the nozzle can be rotated. The jet receiving plate is integrally attached by extending from the rear side of the nozzle to the front side substantially in parallel with the fluid ejection direction of the nozzle. Provided with a substantially bar-shaped support plate support arm,
The method is characterized in that the receiving plate support arm is pivotally adjusted around the nozzle until the receiving plate support arm is located on the rear side in the moving direction along the surface of the normal surface of the nozzle with respect to the nozzle. Surface covering body removal device. In the slope covering body removal device according to claim 3,
The slope covering body, which is disposed integrally with the jet receiving plate and scrapes a portion near the natural mountain and / or the natural mountain surface of the slope covering body at the front end side in the nozzle moving direction of the support device in the jet receiving plate. A slope covering body removing device comprising a tip excavation section that creates a gap of at least the thickness of the jet receiving plate between the ground and the natural ground. In the slope covering member removal apparatus according to claim 3 or 4,
It has at least a crushing blade portion that operates at a position near the nozzle of the receiving plate support arm, and at least a receiving plate with respect to an unbroken portion sandwiching a crushed gap portion of the sloped surface covering crushed by the fluid jet A slope covering body removing device, comprising: an auxiliary crushing unit that crushes by crushing the crushing blade portion over a predetermined range larger than the width of the support arm. In the slope covering member removal apparatus according to any one of claims 1 to 5,
The nozzle and the jet receiver are formed as a combination of substantially plate-like bodies that project predetermined dimensions in each direction around the nozzle centering on the nozzle position and cover the nozzle front side in a predetermined range with respect to the nozzle rear side in the fluid ejection direction of the nozzle. A slope covering body removing device, comprising: a cover body disposed on the support device so that the position and inclination of the plate can be adjusted together with the plate. A nozzle capable of jetting only a fluid or a fluid containing a solid granular abrasive from the tip is opposed to a predetermined slope covering body constructed on the slope surface, and at least a predetermined position on the nozzle front side of the fluid jet A jet receiving plate having a size that covers the diffusion range in is inserted into the gap between the slope covering and the natural ground behind the slope covering,
While the nozzle and the jet receiving plate are moved continuously or intermittently along the linear crushing / removal target site arranged and set in a substantially grid pattern in advance on the sloped surface covering, The jet is collided, the target part is crushed and removed to cut and divide the slope covering into a substantially block shape,
A method of removing a slope covering body, comprising: removing each divided part of the slope covering body from a natural ground surface.

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