JP6496131B2 - Processing unit and processing method - Google Patents

Description

  The present invention relates to a machining unit and a machining method.

  Patent Document 1 discloses a work machine having a cutter attachment attached as a work attachment in order to dismantle a concrete structure. The cutter attachment includes a pair of blade members, and is configured to process (including cutting and crushing) an object between the blade members by bringing the blade members closer to each other.

JP 2002-113377 A

  The cutter attachment as shown in Patent Document 1 can be widely applied to reinforced concrete structures. However, the rebar itself (including H steel) is much more ductile and malleable than concrete. For this reason, even if you try to dismantle a reinforced concrete structure with a cutter attachment, even if the concrete part can be processed first (including cutting and crushing), there will be no processing work in the part with many reinforcing bars (rebar part), and In some cases, the intended processing is not performed and only the deformation occurs. In some cases, the rebar portion that should have been cut by the machining operation hangs in the air in an unintended form and becomes unstable, such as when it does not know when it will fall. In addition, the strength of concrete itself is increasing year by year. That is, in the cutter attachment as disclosed in Patent Document 1, depending on the configuration of the object to be processed, not only the operation is accelerated, but there is also a risk of threatening the safety of the operation.

  Accordingly, the present invention has been made to solve the above-described problems and the like, and has an object to provide a machining unit and a machining method capable of avoiding a reduction in work efficiency and improving work safety. To do.

The present invention includes a work attachment attached to a work machine, and a machining nozzle that is supported by the work attachment and that enables abrasive water jet machining by injecting a machining fluid in which an abrasive is mixed in a water jet fluid. A working unit, the work attachment having a latching portion that is latched to an object, supporting the machining nozzle, and a support mechanism for directing the machining nozzle toward the object is provided in the work attachment. by Rukoto is supported on the working attachment, it is obtained by solving the problem.

  That is, in the present invention, the machining fluid is jetted toward the object toward the machining nozzle that enables the abrasive water jet machining. For this reason, at least a part of the object can be processed by the abrasive water jet processing. At this time, it is possible to avoid a reduction in processing efficiency depending on the structure of the object by using an appropriate abrasive. And it can be set as the state latched to the target object by the latching | locking part of the work attachment. That is, the work attachment that supports the position of the processing nozzle with respect to the object can be stably brought into a stationary state. For this reason, it is possible to prevent the position of the portion to be processed during the abrasive water jet processing from being unintentionally shifted during the processing, and the processing can proceed efficiently.

  Note that when the work attachment has a pair of gripping members capable of gripping the target object and the locking portion is provided on at least a part of the gripping member, the target object is a work attachment. By gripping, the position of the processing nozzle can be made more stable and stationary with respect to the object. At the same time, when performing the process of completely cutting and separating the object with the processing nozzle, the part that is not supported when the object is processed can be held by the gripping member, and the processed part (concrete It is possible to prevent a lump or a steel frame from falling).

  The gripping member is a blade member that processes the object by shortening the distance between the opposing ends, and the direction of the processing nozzle is parallel to a plane in which the pair of blade members approach and separate from each other. When it is arrange | positioned, it can prevent that the fluid for a process will be jetted directly to a blade member. That is, it is possible to reliably prevent the blade member from being worn out by the abrasive water jet processing. At the same time, by using the blade member, the remaining part of the object processed with the processing fluid can be processed stably and quickly. In other words, even if there is a processing residue, the processing can be completed completely with the blade member.

  When the mixing path member communicating with the processing nozzle is supported by the work attachment, the abrasive is mixed into the water jet fluid by the mixing path member, and the processing fluid is ejected from the processing nozzle. Can minimize the length of the flow path of the processing fluid mixed with the abrasive. That is, it is possible to minimize the members that are worn out by the flow of the working fluid, and it is possible to reduce the occurrence of failure and the replacement cost of the consumable members.

  When the support mechanism includes a rotating mechanism that changes the direction of the processing nozzle and a moving mechanism that changes the position of the processing nozzle, a region where the processing fluid hits the object can be widened. . For this reason, it becomes possible to process a larger target object efficiently.

  When the processing mechanism allows the direction of the processing nozzle to be directed from the front side surface to the back side surface of the object, the processing nozzle processes at least the object from the half of the entire outer periphery. Can be realized.

  When the support mechanism is controlled by wireless operation, the application range of the processing unit can be expanded as compared with the case of wired operation.

  Furthermore, in the case where a sprinkling mechanism capable of sprinkling water is provided in the processed portion of the object, generation of dust when the object is processed can be suppressed. At the same time, the position to be processed by the processing nozzle can be washed away with watering to remove foreign matter.

  Note that the watering mechanism does not need to increase the number of flow paths connected to the processing unit when watering the water jet fluid, can simplify the configuration, and ensure a large degree of freedom of posture of the processing unit. it can.

  The present invention includes a work attachment attached to a work machine, a processing nozzle supported by the work attachment and capable of performing an abrasive water jet process by injecting a processing fluid in which an abrasive is mixed in a water jet fluid, A processing method using a processing unit comprising: a step of locking the work attachment to an object; directing the processing nozzle to the object; and injecting the processing fluid from the processing nozzle; It can also be regarded as a processing method characterized by including a step of processing at least a part of an object.

  In addition, when performing the process of completely cutting and separating the object with the processing nozzle, the process attachment includes a step of holding a portion that is not supported when the object is processed with the work attachment. It can also be regarded as a characteristic processing method.

  According to the present invention, it is possible to avoid a decrease in work efficiency and improve work safety.

The schematic diagram which shows the backhoe which concerns on 1st Embodiment of this invention. Schematic diagram showing a machining unit used for the backhoe shown in FIG. 1 (a front view of the entire machining unit (A), a side view of the fluid machining mechanism (B)) Schematic diagram showing the relationship between the components of the fluid processing mechanism, the arm body, and the work attachment The schematic diagram which shows the whole processing unit which concerns on 2nd Embodiment of this invention. Schematic diagram showing the fluid processing mechanism used in the processing unit of FIG. The schematic diagram which shows the whole processing unit which concerns on 3rd Embodiment of this invention (The figure which shows the undeployed state of a rail (A), the figure which shows the unfolded state of a rail (B)) The schematic diagram which shows the fluid processing mechanism used for the processing unit of FIG. The schematic diagram which shows the whole processing unit which concerns on 4th Embodiment of this invention (The figure which shows the undeployed state of a rail (A), the figure which shows the unfolded state of a rail (B)) Schematic diagram showing the fluid processing mechanism used in the processing unit of FIG. The schematic diagram which shows the backhoe which concerns on 5th Embodiment of this invention. The schematic diagram which shows the cutter attachment which concerns on 6th Embodiment of this invention. The schematic diagram which shows the backhoe which concerns on 7th Embodiment of this invention. The schematic diagram which shows the cutter attachment which concerns on 8th Embodiment of this invention.

  Hereinafter, an example of the first embodiment of the present invention will be described in detail with reference to the drawings.

  Initially, the structure of the backhoe (work machine) 100 which concerns on this embodiment is demonstrated using FIG. The backhoe 100 can be widely used in a building demolition business, a building repair business, a waste disposal business, and the like.

  As shown in FIG. 1, the backhoe 100 includes a vehicle body 120, an arm body 127, and a processing unit 140. The vehicle body 120 includes a crawler type traveling body 122, a turning mechanism 124, and a turning body 126. In other words, the swing body 126 is rotatable with respect to the traveling body 122 by the swing mechanism 124. The swivel body 126 is provided with a cab 126A. The cab 126A has a sealable configuration, can block rain and wind, and can be adjusted in temperature by an air conditioner. That is, the driver can stably operate the backhoe 100 regardless of the weather (not limited to this, the backhoe may be operated unattended). An arm body 127 that can swing up and down is attached to the revolving body 126.

  As shown in FIG. 1, the arm body 127 includes a boom 128 attached to the revolving body 126 and an arm 132 attached to the tip of the boom 128. The arm 132 can be swung by the cylinder mechanism 130. A processing unit 140 for processing the object OB is attached to the tip of the arm 132. The processing unit 140 can be swung by a cylinder mechanism 134 via a link mechanism 136. That is, the backhoe 100 can move the processing unit 140 in the up-down direction and the front-back, left-right direction.

  Next, the processing unit 140 will be schematically described with reference to FIGS.

  The processing unit 140 includes a cutter attachment (work attachment) CT attached to the backhoe 100 and a fluid processing mechanism 160 as shown in FIGS. 1 and 2A. The cutter attachment CT includes a pair of blade members (gripping members) 156 and 158 that can grip an object OB to be processed (for example, a steel cutter). Note that the pair of blade members 156 and 158 can be said to be locking portions that lock the cutter attachment CT to the object OB (this locking is achieved by pressing the blade members 156 and 158 against the object OB. 158 and the object OB, and the frictional force between the blade members 156 and 158 and the object OB can be increased). The fluid processing mechanism 160 includes a processing nozzle 170 and a support mechanism 172. The processing nozzle 170 is supported by the cutter attachment CT, and enables the abrasive water jet processing by injecting the processing fluid CF in which the abrasive AB is mixed into the water jet fluid WF. The support mechanism 172 supports the processing nozzle 170 and can point the processing nozzle 170 toward the grasped object OB.

  Next, the processing unit 140 will be described in detail below with reference to FIGS. 2 (A), 2 (B), and FIG.

  As shown in FIG. 2A, the cutter attachment CT includes a frame 146, a bracket 150, and blade members 156 and 158. The frame 146 is provided with a swing shaft 142 and a link shaft 144. The swing shaft 142 engages with the arm 132 described above, and the link shaft 144 engages with the link mechanism 136 described above. For this reason, the frame 146 is driven to swing around the swing shaft 142. A rotation mechanism 148 is provided at the tip of the frame 146, and the bracket 150 is rotatably attached to the frame 146 via the rotation mechanism 148.

  As shown in FIG. 2A, two mounting shafts 152, 154 are provided at the tip of the bracket 150. The attachment shafts 152 and 154 respectively attach the blade members 156 and 158 so as to be rotatable. A cylinder mechanism (not shown) is provided on the base side (the bracket 150 side) of the blade members 156 and 158. The cylinder mechanism is driven by the hydraulic pressure transmitted from the arm body 127, so that the end portions of the blade members 156 and 158 facing each other can approach and separate symmetrically with respect to the central axis O with the mounting shafts 152 and 154 as fulcrums. It is said that.

  As shown in FIG. 2 (A), the blade members 156 and 158 have opposite end portions as blade portions 156A and 158A, respectively, and the object OB is reduced by shortening the distance between the blade portions 156A and 158A. Can be processed.

  As shown in FIG. 3, the fluid processing mechanism 160 includes a high-pressure fluid generation unit 164, an abrasive storage unit 166, an abrasive supply unit 168, a mixing path member 169, a processing nozzle 170, a support mechanism 172, Is provided.

  As shown in FIG. 3, the high-pressure fluid generator 164 converts water (including an aqueous solution containing water as a main component) into a water jet fluid WF in a high-pressure state (for example, 200 MPa to 400 MPa) and sends it to the fluid supply path 164A ( For example, a high pressure pump.

  As shown in FIGS. 2A and 3, the abrasive reservoir 166 is a portion that stores the abrasive AB mixed in the water jet fluid WF. When the abrasive material AB is consumed, the abrasive material storage unit 166 is replaced with, for example, a cassette, so that the abrasive material AB can be easily replenished from the outside.

  As shown in FIG. 2A and FIG. 3, the abrasive material supply unit 168 generates compressed air, and the abrasive material AB present in the abrasive material storage unit 166 is converted into the water jet fluid WF via the abrasive material supply path 168A. Mix. The pressure of the compressed air is greater than the pressure of the water jet fluid WF (not limited to this, even if the abrasive AB is mixed into the water jet fluid WF by using negative pressure generated by the orifice or gravity. Good). For this reason, it is possible to prevent the water jet fluid WF from entering the abrasive material supply unit 168 and to stably mix the abrasive material AB into the water jet fluid WF.

  The mixing path member 169 communicates with the processing nozzle 170 as shown in FIGS. A fluid supply path 164A and an abrasive supply path 168A are connected to the mixing path member 169. For this reason, the abrasive AB is mixed into the water jet fluid WF by the mixing path member 169, and the processing fluid CF is ejected from the processing nozzle 170. The mixing path member 169 is supported by the support mechanism 172 so as to be rotatable about the axis P (that is, the support mechanism 172 is a rotation mechanism that changes the direction of the ejection port 170A of the processing nozzle 170). Actually, since the fluid supply path 164A and the abrasive supply path 168A of the portion connected to the mixing path member 169 are made of a material that can be expanded and contracted, the mixing path member 169 has a predetermined range (for example, a central axis). Rotation is possible at ± several tens of degrees from O). The fluid supply path 164A and the abrasive supply path 168A are connected to the axis P from opposite directions. For this reason, the force applied to the mixing path member 169 from the high-pressure fluid generating section 164 and the abrasive supply section 168 can be canceled appropriately, and the force for inclining the axis P of the mixing path member 169 in one direction can be reduced.

  2A and 2B, the processing nozzle 170 is supported by the mixing path member 169 so as to be orthogonal to the axis P. The opening diameter of the injection port 170A of the processing nozzle 170 is set to, for example, several hundred μm to several mm or less. 2A and 2B, the white arrow indicates the rotational direction of the processing nozzle 170. In FIG. 3, the white arrow at the right end indicates the flow of water supplied to the high-pressure fluid generator 164, and the white arrow at the left end indicates the direction of the processing fluid CF ejected from the processing nozzle 170. ing.

  As shown in FIG. 3, the high-pressure fluid generator 164 is supported by the arm body 127. 2A, the abrasive material storage unit 166, the abrasive material supply unit 168, and the support mechanism 172 are supported by the bracket 150 of the cutter attachment CT (not necessarily supported in this manner). Also good). The support mechanism 172 supports the mixing path member 169 so as to be rotatable, and is disposed so that the axis P comes to the central axis O. For this reason, the direction of the processing nozzle 170 is arranged in parallel with the plane in which the pair of blade members 156 and 158 approach and separate from each other.

  The support mechanism 172 is controlled by a wireless operation that operates with a power source (not shown) provided in the support mechanism 172 (the transmitter is operated in, for example, the cab 126A). The support mechanism 172 may be an electric motor that is powered by a power source (not shown), or may be a hydraulic motor or hydraulic cylinder mechanism that uses the hydraulic pressure supplied from the arm body 127.

  Next, the operation procedure of the processing unit 140 will be described. Here, the object is a reinforced concrete structure.

  First, the concrete portion of the portion to be processed (cutting target) of the reinforced concrete structure is crushed as much as possible by the pair of blade members 156 and 158 of the cutter attachment CT. Then, the object OB (mainly the remaining reinforcing bar portion) is held and fixed by the pair of blade members 156 and 158. In other words, the cutter attachment CT is locked to the object OB with the pair of blade members 156 and 158. At that time, the gripped portion is compressed so that the processing range (cutting range) by the fluid processing mechanism 160 is made as small as possible.

  Next, the injection port 170A of the processing nozzle 170 is directed to the grasped object OB. In the present embodiment, since the center axis O and the direction of the machining nozzle 170 coincide with each other in the initial state, the jet port 170A of the machining nozzle 170 is obtained when the object OB is gripped by the pair of blade members 156, 158. Is directed to the object OB.

  Next, the processing fluid CF is ejected from the processing nozzle 170 to process (cut) at least a part of the object OB (the minimum necessary position for facilitating processing (cutting) with the cutter attachment CT) ( Of course everything is fine). At this time, the processing nozzle 170 is rotated by the support mechanism 172 in accordance with the processing state (cutting state) of the region of the target object OB to which the processing fluid CF is injected. At the same time, the gripping position by the blade members 156 and 158 may be changed as appropriate in accordance with the processing situation.

  Next, injection of the machining fluid CF is stopped, the blade members 156 and 158 are moved according to the machining state, and the desired machining (cutting) is completed by the blade members 156 and 158. The processing by the blade members 156 and 158 may be performed before the operation of the fluid processing mechanism 160, or may be performed alternately with the processing by the fluid processing mechanism 160. Alternatively, the concrete portion may be processed by the processing nozzle 170 as it is by holding the object OB with the cutter attachment CT without processing and crushing the concrete portion.

  In addition, when performing the process of completely cutting and separating the object OB with the process nozzle 170, a portion that is not supported when the object OB is processed is held by the cutter attachment CT. Specifically, for example, there is a case in which an object OB such as a vertically reinforced concrete structure supported only from below is completely cut and separated at a height in the middle thereof.

  At this time, first, the processing unit 140 is oriented so that the processing nozzle 170 comes above the pair of blade members 156 and 158. Then, the object OB is processed (cut) by the blade members 156 and 158 and the processing nozzle 170 (may be processed by either one or may be processed alternately). At that time, the object OB is appropriately held by the blade members 156 and 158 and processed by the processing nozzle 170. When the portion above the processing position (cutting position) of the object OB reaches a state where it is completely cut and separated, the processing mechanism 148 causes the processing nozzles below the pair of blade members 156 and 158. The processing unit 140 is turned so that 170 comes. And the part which comes above the processing position (cutting position) of the object OB is gripped by the pair of blade members 156, 158, and the processing position (cutting position) of the object OB is processed by the processing nozzle 170.

  As described above, in this embodiment, the machining fluid CF is ejected toward the object OB held by the pair of blade members 156 and 158 toward the machining nozzle 170 that enables the abrasive water jet machining. For this reason, at least a part of the object OB can be processed by the abrasive water jet processing. At this time, it is possible to avoid a decrease in processing efficiency depending on the structure of the object OB by using an appropriate abrasive AB. Moreover, the object OB is held by the blade members 156 and 158 of the cutter attachment CT. That is, the position of the machining nozzle 170 can be made extremely stable and stationary with respect to the object OB. For this reason, it is possible to prevent the position of the portion to be processed during the abrasive water jet processing from being unintentionally shifted during the processing, and the processing can proceed efficiently. Furthermore, since the cutter attachment CT includes the rotation mechanism 148, the vertical / horizontal relationship between the processing nozzle 170 and the blade members 156, 158 can be easily changed. For this reason, when performing processing for completely cutting and separating the object OB with the processing nozzle 170, it is easy to hold the portion that is not supported when the object OB is processed with the blade members 156 and 158. And can prevent falling of processed parts (concrete lump, steel frame, etc.) (Note that even if there is no rotation mechanism, changing the position of the backhoe can change the vertical and horizontal relationship between the processing nozzle and the blade member. Processed parts (concrete blocks, steel frames, etc.) can be prevented from falling). In addition, it is the processing fluid CF that processes the object OB. For this reason, dust itself generated by processing can be reduced, and scattering of the dust into the air can be suppressed by the processing fluid CF itself. At the same time, no sparks are generated during processing, and fire and explosion can be prevented by applying to combustible materials and combustible gases in the processing process.

  In the present embodiment, the blade members 156 and 158 can process the object OB by shortening the distance between the opposing ends (blade portions 156A and 158A). And the direction of the process nozzle 170 is arrange | positioned in parallel with the plane which the pair of blade members 156 and 158 approach and separate. For this reason, it is possible to prevent the machining fluid CF from being directly sprayed onto the blade members 156 and 158. That is, it is possible to reliably prevent the blade members 156 and 158 from being worn out by the abrasive water jet processing. At the same time, by using the blade members 156 and 158, the remaining portion of the object OB processed with the processing fluid CF can be processed stably and quickly. That is, even if there is a processing residue, the blade members 156 and 158 can complete the processing completely. In addition, not only this but the target object OB may be comprised with the holding member which does not have a blade part (grapple etc.).

  In the present embodiment, the mixing path member 169 communicating with the processing nozzle 170 is supported by the cutter attachment CT, and the abrasive AB is mixed into the water jet fluid WF by the mixing path member 169, so that the processing fluid CF is converted into the processing nozzle. Injected from 170. For this reason, the flow path in the fluid processing mechanism 160 of the processing fluid CF mixed with the abrasive AB can be minimized. That is, the members that are worn out by the flow of the processing fluid CF can be limited to only the processing nozzle 170 and the mixing path member 169 supported by the support mechanism 172, thereby reducing the occurrence of failure and the replacement cost of the consumable member. It becomes possible. And the easiness of member replacement and cost reduction are attained. In addition, not only this but the mixing path member may be supported by the arm body instead of the cutter attachment.

  In the present embodiment, the support mechanism 172 is a rotation mechanism that changes the direction of the injection port 170 </ b> A of the processing nozzle 170. The mixing path member 169 whose center of rotation coincides with the axis P rotated by this rotation mechanism is located on the center axis O, and the orientation of the processing nozzle 170 is the same as the direction of the center axis O in the initial state. I'm doing it. For this reason, the processing nozzle 170 can eject the processing fluid CF so as to hit the object OB without rotating the rotation mechanism from the initial state. In addition, it is possible to effectively expand the processing portion by changing the angle of the processing nozzle 170 by the rotation mechanism. However, the present invention is not limited to this, the support mechanism may be fixed, the axis P may be located on the central axis O, and the direction of the machining nozzle may coincide with the direction of the central axis O in the initial state. This is because the range of the machining location can be changed also by changing the gripping position and gripping direction of the cutter attachment CT.

  In the present embodiment, the support mechanism 172 is controlled by wireless operation. For this reason, compared with the case of wire operation, since there is no line, there is no restriction on the operation of the processing unit 140, it can be moved to any height and place, and the application range can be expanded.

  That is, in this embodiment, it is possible to avoid a reduction in efficiency of the machining operation and to improve the safety of the operation. For this reason, the processing unit 140 is dismantled or partially dismantled from a reinforced concrete structure (for example, a nuclear power plant decommissioning facility or a similar facility / structure) having thicker and more reinforcing steel than the conventional one and having a greater thickness and strength of concrete. It can also be applied to removal, removal and demolition. And wear of blade parts 156A and 158A of blade members 156 and 158 can also be reduced. Furthermore, an extra load on the cutter attachment CT can be reduced. That is, it is possible to eliminate the breakage of the hydraulic hose that supplies power to the cutter attachment CT and the application of excessive force to the joints such as the link mechanism 136 of the arm body 127. For this reason, failure and repair can be reduced, and the overall cost including maintenance management of the backhoe 100 can be reduced.

  Although the present invention has been described with reference to the above embodiment, the present invention is not limited to the above embodiment. That is, it goes without saying that improvements and design changes can be made without departing from the scope of the present invention.

  For example, in the first embodiment, the support mechanism 172 is a rotation mechanism that changes the direction of the processing nozzle 170, but is not limited thereto. For example, the second embodiment shown in FIGS. 4 and 5 may be used. In the second embodiment, the support mechanism is mainly different from that in the first embodiment. Therefore, in the second embodiment, members different from those in the first embodiment are denoted by reference numerals, and redundant descriptions are omitted. In FIG. 4, white arrows indicate directions in which the support mechanism 272 can move.

  In the second embodiment, as shown in FIG. 5, the support mechanism 272 includes rotating mechanisms 273 and 280 that change the direction of the processing nozzle 270 and a moving mechanism 277 that changes the position of the processing nozzle 270 (the rotating mechanism 273 and 280 move together). The mechanism 277 may be a mechanism (a ball screw, a linear motor, a gear reduction mechanism, or the like) to which an electric motor that is driven by a power source (not shown) is applied, or a cylinder mechanism that uses hydraulic pressure supplied from an arm body). Specifically, the fixing portion 274 of the rotation mechanism 273 is attached to the bracket 250 so that the axis P is on the center axis O. A rail portion 278 of the moving mechanism 277 is attached to a rotating shaft 276 that rotates with respect to the fixed portion 274. The rail part 278 supports the moving part 279 of the moving mechanism 277 so as to be linearly movable. A support unit 281 of the rotation mechanism 280 is attached to the moving unit 279. A rotating part 282 is rotatably supported with respect to the supporting part 281. The rotating part 282 is a mixing path member, and here, the abrasive AB is mixed into the water jet fluid WF. The support mechanism 272 is controlled by a wireless operation that operates with a power source (not shown) provided in the support mechanism 272.

  In the present embodiment, the support mechanism 272 includes rotation mechanisms 273 and 280 that change the direction of the processing nozzle 270 and a moving mechanism 277 that changes the position of the processing nozzle 270. For this reason, the processing nozzle 270 can be applied in a wider range in the object OB gripped by the blade member, and the region where the processing fluid CF is hit can be widened. That is, it becomes possible to efficiently process a larger object OB.

  The combination of the rotation mechanism and the movement mechanism is not limited to the second embodiment, and may be, for example, the third embodiment shown in FIGS. In the third embodiment, since the support mechanism is mainly different from the above embodiment, in the third embodiment, members different from those in the above embodiment are denoted by reference numerals, and redundant description is omitted. In FIGS. 6A and 6B, the white arrow indicates the direction in which the support mechanism 372 can move. The broken line outline shows an example of the position and direction when the processing nozzle 370 moves.

  In the third embodiment, as shown in FIG. 7, the support mechanism 372 includes rotation mechanisms 373 and 380 and a movement mechanism 377. The moving mechanism 377 includes two rail portions 378A and 378B and a moving portion 379. The two rail portions 378A and 378B have an arc shape, and as shown in FIGS. 6A and 6B, the rail portion 378B extends and contracts with respect to the rail portion 378A. For this reason, the processing nozzle 370 can be moved to the opposite side of the object OB by changing the expansion / contraction amount of the rail portion 378B according to the size of the object OB. In other words, the support mechanism 372 allows the direction of the processing nozzle 370 to be directed from the front side surface to the back side surface of the object OB. For this reason, it becomes possible to process at least the object OB from the half direction of the entire outer periphery with the processing nozzle 370.

  In the third embodiment, since the rail portions 378A and 378B have arc shapes, it is possible to prevent a large stress from being locally applied to the rail portions 378A and 378B.

  Further, the combination of the rotation mechanism and the movement mechanism is not limited to the above-described embodiment, and may be, for example, the fourth embodiment shown in FIGS. 8A and 8B, a white arrow indicates a direction in which the support mechanism 472 can move.

  In the fourth embodiment, as shown in FIG. 9, the support mechanism 472 includes a rotation mechanism 473 and a movement mechanism 477. In the moving mechanism 477, the two rail portions 478A and 478B have a linear shape. When the moving portion 479 extends to a predetermined length with respect to the rail portion 478B, the moving portion 479 is bent at a predetermined angle (for example, 90 degrees) from the expansion / contraction direction (FIG. 8B). ). For this reason, by setting the size of the target object OB to some extent, it is possible to realize processing of at least the object OB from the half direction of the entire outer periphery with the processing nozzle 470 as in the third embodiment. Is possible. Further, in this embodiment, the two processing nozzles 470 are fixed (may be movable) to the moving unit 479, and the injection direction of the processing nozzles 470 faces each other to some extent (not completely parallel). It has become. For this reason, since the side surface of the object OB can be processed at two places at the same time, the processing operation can be further speeded up. In the present embodiment, the moving part 479 is a mixing path member.

  In the above embodiment, the backhoe is relatively small, but it may be as in the fifth embodiment shown in FIG. In the fifth embodiment, the backhoe 500 is larger. For this reason, the distance from the processing nozzle 570 can be increased, and the influence of the processing fluid CF on the vehicle body 520 and the operator can be further reduced. At the same time, the cutter attachment CT can be made large, and a larger object OB can be held by the backhoe 500.

  In the present embodiment, the cutter attachment CT includes a crushing blade portion called a crusher. The crusher is not limited to this shape, and may be as in the sixth embodiment shown in FIG.

  In the sixth embodiment, the cutter attachment CT of the processing unit 640 is a crusher having a shape different from that of the fifth embodiment. The machining unit 640 includes the fluid machining mechanism 660 similar to that of the first embodiment on the central axis O (the axis P is disposed on the central axis O), and further includes a water spray mechanism 680. I have. The watering mechanism 680 can spray water (including a fluid containing water as a main component) from the watering nozzle 686. The sprinkling mechanism 680 is arranged so that the axis Q is on the central axis O (not necessarily such an arrangement). The watering mechanism 680 includes a support part 682, a rotating part 684, and a watering nozzle 686. The support portion 682 is attached to the bracket 650. The support portion 682 supports the rotating portion 684 so as to be rotatable about the axis Q. The rotating part 684 supports the watering nozzle 686 so as to be inclined with respect to the axis Q.

  The watering mechanism 680 is wirelessly operated by a transmitter (not shown) (which may be the same as or different from the transmitter described above). In this transmitter, the start / stop of watering from the watering nozzle 686 and the rotation inclination of the watering nozzle 686 can be controlled. For this reason, it is possible to water the direction of the watering nozzle 686 appropriately toward the portion where the object OB is processed, and the generation of dust when the object OB is processed can be effectively suppressed. .

  From the watering nozzle 686, the water jet fluid WF (injected from the processing nozzle 670) is sprinkled by switching the flow path. For this reason, there is no need to increase the number of flow paths connected to the processing unit 640, the configuration can be simplified, and a large degree of freedom of posture of the processing unit 640 can be ensured.

  The nozzle diameter of the watering nozzle 686 is larger than the nozzle diameter of the processing nozzle 670. For this reason, the position processed by the processing nozzle 670 can be appropriately washed away by watering from the watering nozzle 686 to remove foreign matters. That is, the processing position by the processing nozzle 670 can be determined more accurately.

  In the present embodiment, the axis P of the fluid processing mechanism 660 and the axis Q of the water spray mechanism 680 are arranged in this order from the blade members 656 and 658 on the central axis O. However, the present invention is not limited to this. And the axis Q may coincide with each other (the fluid processing mechanism and the watering mechanism are overlapped), or the order of the fluid processing mechanism and the watering mechanism may be different. In addition, both the fluid processing mechanism 660 and the watering mechanism 680 are not disposed only on one side of the bracket 650, but the fluid processing mechanism and the watering mechanism may be disposed on the opposite sides of the bracket. Alternatively, as in the seventh embodiment shown in FIG. 12, the watering mechanism 780 may be disposed on the support portion 733 attached to the arm 732 (the description of other reference numerals overlaps with the above embodiment). Will be omitted).

  The watering mechanism 680 is not limited to this, and may not be wirelessly operated by the transmitter. In addition, the watering nozzle may be fixed, or only rotated or inclined. The water sprayed from the water spray mechanism and the water jet fluid WF may be separated. In that case, the timing of watering from the watering nozzle is not limited to the timing of spraying from the processing nozzle, and each can be performed simultaneously. In addition, from the watering mechanism, not only water but also foams or the like may be discharged at the same time, or may be discharged in a time-sharing manner.

  Moreover, in the said embodiment, although the processing nozzle was used supposing cut | disconnecting the target object OB mainly, this invention is not limited to this. For example, it may be as in the eighth embodiment shown in FIG.

  In the eighth embodiment, the machining nozzle 870 of the fluid machining mechanism 860 is not cut but applied to the fishing of the object OB or surface polishing. Although the reference numerals are different, the description of the same configuration as in the above embodiment is omitted.

  First, detachable locking portions 857 and 859 (shown by broken lines) are provided at the tips of the pair of blade members 856 and 858 of the cutter attachment CT, respectively. A plurality of protrusions 857A and 859A are provided at the tips of the locking portions 857 and 859. By applying the protrusions 857A and 859A to the object OB, the protrusion 857A and 859A are inserted into the object OB, or the frictional force between the object OB and the protrusions 857A and 859A is increased. It is possible to That is, the cutter attachment CT can be locked to the object OB by the locking portions 857 and 859. For this reason, even if it does not hold | grip the target object OB with a pair of blade member 856,858, the cutter attachment CT which supports the position of the process nozzle 870 with respect to the target object OB can be made into the stable stationary state. . In addition, the distance between the tip of the processing nozzle 870 and the object OB (which comes outside the protrusions 857A and 859A) can be adjusted in the open / close state of the blade members 856 and 858. That is, in this embodiment, in addition to the adjustment of the pressure of the processing fluid CF, it is possible to adjust the amount of suspension while the blade members 856 and 858 are opened and closed.

On the other hand, the fluid processing mechanism 860 has the same configuration as the fluid processing mechanism 260 of the second embodiment. That is, the fluid processing mechanism 860 can move the processing nozzle 870 in parallel with the surface of the object OB while maintaining the direction of the processing nozzle 870 at the same angle (for example, a right angle).
In the present embodiment, the cutter attachment CT has a pair of blade members 856 and 858 that can hold the object OB, and the locking portions 857 and 859 are provided on at least a part of the blade members 856 and 858. Although it is a structure, this invention is not limited to this. For example, the work attachment may have a configuration in which the work attachment does not have a pair of blade members or gripping members but simply has a bracket, and the engaging portion is directly provided on the bracket that supports the processing nozzle. Further, in the present embodiment, it has been described that the object OB is suspended or surface-polished, but the object OB may be cut with the configuration of the present embodiment.

  The present invention is particularly applicable to a reinforced concrete structure, and can be widely applied to a building demolition industry, a building repair industry, a waste disposal industry, and the like.

100, 500, 700 ... backhoe 120, 520, 720 ... vehicle body 122, 522, 722 ... traveling body 124, 524, 724 ... turning mechanism 126, 526, 726 ... turning body 127, 527, 727 ... arm body 128, 528, 529, 728, 729 ... Boom 130, 134, 530, 534, 730, 734 ... Cylinder mechanism 132, 532, 732 ... Arm 136, 536, 736 ... Link mechanism 140, 240, 340, 440, 540, 640, 740, 840 ... Processing unit 142 ... Oscillating shaft 144 ... Link shaft 146 ... Frame 148, 273, 280, 373, 380, 473 ... Rotation mechanism 150, 250, 350, 450, 550, 650, 750, 850 ... Bracket 152, 154 ... Mounting shafts 156, 158, 556 558, 656, 658, 856, 858 ... Blade member 156A, 158A, 556A, 558A, 656A, 658A ... Blade portion 160, 260, 360, 460, 560, 660, 760, 860 ... Fluid processing mechanism 164 ... High pressure fluid generation Part 164A ... Fluid supply path 166 ... Abrasive storage part 168 ... Abrasive supply part 168A ... Abrasive supply path 169, 669 ... Mixing path member 170, 270, 370, 470, 570, 670, 770, 870 ... Processing nozzle 170A ... Jet 172,272,372,472,672,872 ... Support mechanism 274,374,474 ... Fixed part 276,376,476 ... Rotary shaft 277,377,477 ... Move mechanism 278,378A, 378B, 478A, 478B ... Rail part 279, 379, 479 ... Moving part 281, 381 682, 733 ... Supporting part 282, 382, 684 ... Rotating part 680, 780 ... Watering mechanism 686, 786 ... Watering nozzle 857, 859 ... Locking part 857A, 859A ... Projection AB ... Abrasive material CF ... Processing fluid CT ... Cutter Attachment O ... Center axis OB ... Object P, Q ... Axis WF ... Water jet fluid

Claims (11)

A machining unit comprising: a work attachment attached to a work machine; and a machining nozzle supported by the work attachment and capable of performing abrasive water jet machining by injecting a machining fluid in which an abrasive is mixed in a water jet fluid. And
The work attachment has a locking portion locked to an object,
Machining unit supporting the processing nozzle, a support mechanism for directing the machining nozzle to the object, which is provided in the working attachment, characterized in that that is supported on the working attachment. In claim 1,
The work attachment has a pair of gripping members capable of gripping the object,
The processing unit, wherein the locking portion is provided on at least a part of the gripping member. In claim 2,
The gripping member is a blade member that processes the object by shortening the distance between the opposing end portions, and the direction of the processing nozzle is arranged in parallel with a plane in which the pair of blade members approach and separate from each other. Machining unit characterized by being. In any one of Claims 1 thru | or 3,
A mixing path member communicating with the processing nozzle is supported by the work attachment,
The processing unit, wherein the abrasive is mixed into a water jet fluid by the mixing path member, and the processing fluid is ejected from the processing nozzle. In any one of Claims 1 thru | or 4,
The support unit includes a rotation mechanism that changes the direction of the processing nozzle and a moving mechanism that changes the position of the processing nozzle. In claim 5,
The processing unit is characterized in that the direction of the processing nozzle can be directed from the front side surface to the back side surface of the object by the support mechanism. In any one of Claims 1 thru | or 6.
The processing unit, wherein the support mechanism is controlled by wireless operation. In any one of Claims 1 thru | or 7, Furthermore,
A processing unit comprising a watering mechanism capable of watering a portion of the object to be processed. In claim 8,
The processing unit characterized in that the watering mechanism sprays the water jet fluid. A processing unit comprising: a work attachment attached to a work machine; and a work nozzle supported by the work attachment and capable of performing an abrasive water jet process by injecting a work fluid in which an abrasive is mixed in a water jet fluid. Processing method,
Locking the work attachment to an object;
Directing the processing nozzle to the object, spraying the processing fluid from the processing nozzle, and processing at least a part of the object;
The processing method characterized by including. The claim 10, further comprising:
When performing the process of completely cutting and separating the object with the processing nozzle, the process attachment includes a step of holding a portion that is not supported when the object is processed with the work attachment. Method.

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