WO2012026489A1 - 既設管内面の塗装装置 - Google Patents
既設管内面の塗装装置 Download PDFInfo
- Publication number
- WO2012026489A1 WO2012026489A1 PCT/JP2011/069045 JP2011069045W WO2012026489A1 WO 2012026489 A1 WO2012026489 A1 WO 2012026489A1 JP 2011069045 W JP2011069045 W JP 2011069045W WO 2012026489 A1 WO2012026489 A1 WO 2012026489A1
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- WIPO (PCT)
- Prior art keywords
- paint
- existing pipe
- drive
- unit
- supply pipe
- Prior art date
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B13/00—Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00
- B05B13/06—Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00 specially designed for treating the inside of hollow bodies
- B05B13/0627—Arrangements of nozzles or spray heads specially adapted for treating the inside of hollow bodies
- B05B13/0636—Arrangements of nozzles or spray heads specially adapted for treating the inside of hollow bodies by means of rotatable spray heads or nozzles
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/18—Appliances for use in repairing pipes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B13/00—Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00
- B05B13/02—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work
- B05B13/04—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work the spray heads being moved during spraying operation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B13/00—Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00
- B05B13/02—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work
- B05B13/04—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work the spray heads being moved during spraying operation
- B05B13/0431—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work the spray heads being moved during spraying operation with spray heads moved by robots or articulated arms, e.g. for applying liquid or other fluent material to 3D-surfaces
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B13/00—Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00
- B05B13/06—Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00 specially designed for treating the inside of hollow bodies
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B3/00—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements
- B05B3/02—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements
- B05B3/10—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements discharging over substantially the whole periphery of the rotating member, i.e. the spraying being effected by centrifugal forces
- B05B3/1057—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements discharging over substantially the whole periphery of the rotating member, i.e. the spraying being effected by centrifugal forces with at least two outlets, other than gas and cleaning fluid outlets, for discharging, selectively or not, different or identical liquids or other fluent materials on the rotating element
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C7/00—Apparatus specially designed for applying liquid or other fluent material to the inside of hollow work
- B05C7/06—Apparatus specially designed for applying liquid or other fluent material to the inside of hollow work by devices moving in contact with the work
- B05C7/08—Apparatus specially designed for applying liquid or other fluent material to the inside of hollow work by devices moving in contact with the work for applying liquids or other fluent materials to the inside of tubes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
- B05B1/14—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with multiple outlet openings; with strainers in or outside the outlet opening
Definitions
- the present invention relates to a coating apparatus for an inner surface of an existing pipe that forms a coating film on the inner surface of the existing pipe of an apartment house or an industrial facility.
- a resin inner pipe forming apparatus described in Patent Document 1 is known.
- This apparatus includes a resin paint jetting head unit and a twin hose that supplies a main component and a curing agent of the resin paint.
- the jetting head section has a bowl-shaped head having a plurality of small holes or slit-shaped holes formed on the peripheral side wall, and a motor that rotates the bowl-shaped head.
- the supplied resin paint is sprayed from a small hole or a slit-shaped hole by centrifugal force by rotating a bowl-shaped head.
- a resin layer or a paint layer is formed on the inner wall surface of the standing main pipe by pulling up (pull back) the jetting head portion and the twin hose inserted into the standing main pipe and spraying the resin paint.
- the above-described conventional apparatus is intended only for a standing main pipe, in other words, an existing pipe extending straight, and no consideration is given to an existing pipe having a bent portion. For this reason, there is a high possibility that the ejection head portion cannot pass through the bent portion of the existing pipe, and this cannot be applied to the existing pipe having the bent portion. Further, even if it can be applied to the scale, in the configuration in which the coating layer is formed while pulling back the ejection head portion as in the above-described conventional apparatus, the passage of the ejection head portion at the bent portion becomes unstable, and the coating is not performed. There is a problem that a residue occurs.
- An object of the present invention is to provide a surface coating apparatus.
- a coating apparatus for an inner surface of an existing pipe is flexible and has a paint supply pipe inserted into the existing pipe, and is attached to a tip portion of the paint supply pipe, via the paint supply pipe A paint spraying part for spraying the supplied paint onto the inner surface of the existing pipe, a moving device for moving the paint spraying part in the existing pipe, a detection part for detecting a bent part of the existing pipe, and this detection A drive unit that operates based on the detection result of the unit and changes the spray direction of the paint by the paint spraying unit.
- FIG. 1 It is a figure which shows schematic structure of the coating apparatus of the existing pipe inner surface by embodiment of this invention. It is a figure which shows an example of the existing pipe used as coating object. It is a figure which shows schematic structure of a coating unit. It is a figure which shows the structure of the drive mechanism incorporated in the main-body part of the drive part which comprises an application
- FIG. 1 shows a schematic configuration of a coating apparatus for an existing pipe inner surface according to an embodiment of the present invention.
- a coating apparatus 1 for an inner surface of an existing pipe includes a paint supply pipe 3 inserted into an existing pipe to be coated, and a coating unit 5 provided on the front end side of the paint supply pipe 3. And a delivery device 7 for delivering and retracting the paint supply pipe 3. Then, the coating apparatus 1 causes the coating unit 5 to inject the paint based on an operator instruction via an operation unit (not shown), and causes the delivery apparatus 7 to pull back the paint supply pipe 3 to install the coating unit 5.
- the existing pipes to be coated are not particularly limited, but are, for example, existing pipes 10 (particularly horizontal pipes) having bent portions 10a and 10b as shown in FIG. Water supply pipes and drain pipes in office buildings and various pipes for industrial facilities (including industrial plants) are applicable.
- the coating material supply pipe 3 is flexible and supplies the coating unit 5 with the coating material fed by a coating material supply pump (not shown).
- the paint supply pipe 3 has an integrated structure in which two paint hoses (first paint hose 31 a and second paint hose 31 b) are accommodated inside the outer hose 33.
- the outer hose 33 does not accommodate all of the first and second paint hoses 31a and 31b, but exposes a predetermined range (for example, 2 to 3 m) from the tip side.
- a predetermined range for example, 2 to 3 m
- various wirings such as a signal line and a power supply line for connecting the operation unit and the coating unit 5 are also accommodated inside the outer hose 33.
- At least one of the first and second paint hoses 31a and 31b has a rear end of a predetermined amount (for example, 1 to 1.5 m) from the tip.
- a paint detection sensor 35 is provided at the position on the side. The paint detection sensor 35 detects that the paint pumped by the paint supply pump has reached the position in the paint hose mainly at the start of the operation of the coating apparatus 1.
- the paint detection sensor 35 for example, a small photo sensor or pressure sensor can be used.
- a signal (paint detection signal) from the paint detection sensor 35 is output to the operation unit via a signal line (not shown).
- a so-called resin paint for example, an epoxy resin paint or a urethane resin paint
- the first and second paint hoses 31a and 31b for example, a resin hose for liquid conveyance is used. it can.
- the outer hose 33 it is preferable to use a hose reinforced with a resin coil or the like. This is to prevent the outer hose 33 itself and, in turn, the first and second paint hoses 31a and 31b accommodated therein from being broken or crushed.
- the coating unit 5 sprays the paint supplied through the paint supply pipe 3 onto the inner surface of the existing pipe.
- the coating unit 5 is connected to the tip end side of the paint supply pipe 3, specifically, the first paint hose 31a and the second paint.
- the hose 31 b is provided in a portion exposed from the outer hose 33.
- FIG. 3 shows a schematic configuration of the coating unit 5.
- the coating unit 5 includes a paint spraying part 51 that sprays paint on the inner surface of the existing pipe in order from the tip side of the paint supply pipe 3, that is, the downstream side of the existing pipe, and a paint spraying part
- the drive part 53 which changes the spraying direction of the coating material by 51, and the control part 55 which controls the action
- a signal line and a power supply line are connected between the paint spraying unit 51 and the driving unit 53 and between the driving unit 53 and the control unit 55, respectively.
- a signal line and a power supply line extending from the operation unit are connected to the rear end of the control unit 55.
- the paint spraying part 51 has a bottomed cylindrical head part 511 in which a plurality of through holes h (a part of the plurality of through holes h is shown in the figure) is formed over the entire side surface, and the head part 511.
- Motor 513 hereinafter referred to as “first motor”
- first motor and a conical tip portion 515 arranged on the tip side of the head portion 511.
- the head part 511, the first motor 513, and the tip part 515 are arranged such that their center lines (rotation centers) are located on the same straight line.
- the head portion 511 is arranged so that the bottom surface thereof faces the tip side of the paint supply pipe 3, and the center portion of the bottom surface is fixed to the rotation shaft of the first motor 513.
- the first motor 513 is housed in a motor case 517 having a frustoconical appearance, and is controlled by a signal from the operation unit to rotate the head unit 511 around its center line.
- the truncated conical motor case 517 is disposed sideways so that the bottom surface with the largest diameter faces the head portion 511 side. Further, the motor case 517 is formed with paint hose holes through which the first and second paint hoses 31a and 31b pass (inserted) at predetermined intervals. The hoses 31a and 31b are held apart from each other.
- the paint pumped by the paint supply pump is supplied into the head portion 511 via the first and second paint hoses 31a and 31b, more specifically, toward the inner bottom surface of the head portion 511. It has become.
- the maximum outer diameter of the truncated cone-shaped motor case 517 that is, the outer diameter of the bottom surface arranged on the head portion 511 side is larger than the outer diameter of the head portion 513, and the inner diameter of the existing pipe to be painted.
- the first motor 513 and the head portion 511 are arranged so that the rotation center thereof substantially coincides with the pipe axis of the existing pipe.
- the tip 515 mainly protects the head 511 and is rotatably attached to the tip of the rotation shaft of the first motor 511.
- the paint spraying unit 51 causes the first motor 513 to rotate the head unit 511 based on an instruction from the operator via the operation unit, so that the coating material supplied into the head unit 511 passes through each of the paints by centrifugal force. It sprays from the hole h and sprays paint on the inner surface of the existing pipe.
- the drive unit 53 includes a main body (hereinafter referred to as “first drive wire 531a, second drive wire 531b) and a drive mechanism that winds and unwinds the pair of drive wires 531a, 531b.
- a pair of coils that house the portions of the first and second paint hoses 31a and 31b positioned (exposed) between the first body 533 and the paint spraying part 51, respectively. It has a spring (a first spring 535a and a second spring 535b.
- each of the first and second drive wires 531a and 531b is fixed to the rear end side of the paint spraying part 51 (motor case 517) apart from each other across the center line of the paint spraying part 51,
- the other ends are each connected to a drive mechanism in the first main body 533.
- the structure of the drive mechanism and the connection location of the other ends of the first and second drive wires 531a and 531b will be described later (see FIG. 4).
- the first body portion 533 is formed with paint hose holes through which the first and second paint hoses 31a and 31b pass (inserted) apart from each other across the center line of the first body portion 533.
- the first and second paint hoses 31a and 31b are held apart from each other.
- the outer diameter (maximum outer diameter) of the first main body portion 533 is the same as or slightly smaller than the outer diameter of the motor case 517 of the paint spraying portion 51.
- the first and second paint hoses 31a and 31b and the first and second drive wires 531a and 531b are cross sections of the first and second paint hoses 31a and 31b in a cross section orthogonal to the tube axis of the existing pipe.
- the lines connecting the centers and the lines connecting the cross-sectional centers of the first and second drive wires 531a and 531b are arranged so as to be substantially orthogonal to each other.
- FIG. 4 is a view for explaining the configuration of the drive mechanism built in the first main body 533.
- the drive mechanism 540 includes a first guide pulley 541, a second guide pulley 543, a pulley 545, a motor that rotates the pulley 545 (hereinafter referred to as “second motor”) 547, and a pulley 545. And a rotary encoder 549 for detecting the amount of rotation.
- the other end of the first drive wire 531 a having one end fixed to the paint spraying part 51 is wound around and fixed to the pulley 545 via the first guide pulley 541, and one end is attached to the rear end part of the paint spraying part 51.
- the other end side of the fixed second drive wire 531b is wound around and fixed to the pulley 545 from the opposite direction to the first drive wire 531a via the second guide pulley 543. Therefore, when the second motor 547 rotates the pulley 545 in the B1 direction, the first drive wire 531a is wound, while the second drive wire 531b is rewound, and the second motor 547 moves the pulley 545 in the B1 direction. Is rotated in the opposite B2 direction, the first drive wire 531a is rewound while the second drive wire 531b is wound.
- the driving of the second motor 547 is controlled by a motor controller provided in the control unit 55 described later, and the output of the rotary encoder 549 is input to the motor controller.
- FIG. 5 is a diagram for explaining the operation of the drive unit 53.
- portions of the first and second paint hoses 31a and 31b located between the first main body 533 and the paint spraying part 51 are the first and second springs 535a and 535b. Is held linearly (see FIG. 3).
- the pulley 545 is rotated in the B1 direction (see FIG. 4) by the second motor 547 from this state, the first drive wire 531a is wound and the second drive wire 531b is rewound, and the paint spraying portion 51 is moved. It is pulled by the first drive wire 531a.
- FIG. 5 As a result, as shown in FIG.
- the first and second paint hoses 31a and 31b and the first and second springs 535a and 535b bend toward the first drive wire 531a (upward in the drawing).
- the pulley 555 is rotated in the B2 direction (see FIG. 4) opposite to the B1 direction by the second motor 547, the second drive wire 531b is wound and the first drive wire 531a is rewound, and the paint The spray part 51 is pulled by the second drive wire 531b.
- FIG. 5B the first and second paint hoses 31a and 31b and the first and second springs 535a and 535b are bent toward the second drive wire 531b (downward in the drawing).
- the drive unit 53 pulls the paint spraying unit 51 with the first drive wire 521a or the second drive wire 531b, thereby allowing the first and second paint hoses 31a and 31b and the first and second springs 535a, 535b is bent toward the first drive wire 531a side or the second drive wire 531b side, and the direction of the paint spraying part 51 itself is changed to change the spraying direction of the paint by the paint spraying part 51.
- the bending direction and curvature of the first and second paint hoses 31a and 31b and the first and second springs 535a and 535b are determined by the rotation direction and the rotation amount of the second motor 547 (ie, the pulley 545).
- control unit 55 detects the bent portion of the existing pipe and controls the operation of the drive unit 53, and includes a pair of detection wires (a first detection wire 551 a and a second detection wire 551 b). And a main body (hereinafter referred to as “second main body”) 553 incorporating a motor controller (not shown) for controlling the second motor 547 of the driving unit 53.
- second main body main body 553 incorporating a motor controller (not shown) for controlling the second motor 547 of the driving unit 53.
- each of the first and second detection wires 551a and 551b is fixed to the rear end portion of the drive unit 53 (first main body portion 533).
- the second main body 553 has a paint hose hole (of the second main body 553) through which each of the first and second paint hoses 31a and 31b passes.
- the first and second paint hoses 31a and 31b are held apart from each other, with the wire being sandwiched therebetween.
- the outer diameter (maximum outer diameter) of the second main body portion 553 is the same as the maximum outer diameter of the first main body portion 533, that is, the same as or slightly smaller than the outer diameter of the motor case 519. .
- first and second paint hoses 31a and 31b and the first and second detection wires 551a and 551b are cross sections of the first and second paint hoses 31a and 31b in a cross section orthogonal to the tube axis of the existing pipe.
- the line connecting the centers and the line connecting the cross-sectional centers of the first and second detection wires 551a and 551b are arranged so as to be substantially orthogonal to each other.
- FIG. 6 is a diagram showing an internal structure of the second main body 553, and corresponds to a cross-sectional view taken along the line AA in FIG.
- two switches first switch 555a and second switch 555b corresponding to the first and second detection wires 551a and 551b are provided in the second body portion. It is provided at a position away from the center of 553.
- the first switch 555a is connected to the other end of the first detection wire 551a, one end of which is fixed to the rear end of the drive unit 53.
- the second switch 555b is connected to the rear end of the drive unit 53 at one end. Is connected to the other end of the second detection wire 551b.
- the first and second detection wires 551a and 551b are provided with a certain amount of play.
- the first and second switches 555a and 555b are bent by the first and second detection wires 551a and 555b by a predetermined amount or more, in other words, the switch operation unit is pulled by the first and second detection wires 551a and 551b. Is turned OFF ⁇ ON (or OFF ⁇ ON). For example, a toggle switch or a tension switch can be used.
- the said motor controller controls the action
- the first and second paint hoses 31a and 31b have flexibility, and the application unit 5 is in the most stable state in the straight portion of the existing pipe, that is, the first and second paint hoses 31a and 31b are Move through existing pipes in a horizontal line.
- the coating unit 5 (more specifically, the control unit 55) moves from this state to just before the bent portion of the existing pipe, the paint hose positioned outside the bent portion is pulled obliquely in the bent inner direction, and the control portion A force to rotate the control unit 55 is applied to 55.
- the first and second paint hoses 31a and 31b are held apart from each other by the first main body 533 of the drive unit 53 and the second main body 553 of the control unit 55, and the first and second paint hoses 31a and 31b are Since crossing and entanglement are prevented, only the control unit 55 does not rotate.
- the driving unit 53 and the paint spraying unit 51 also rotate together with the control unit 55.
- the entire application unit 5 rotates immediately before the bent portion in the existing pipe, and the application unit 5 is in a state where the first and second paint hoses 31a and 31b are arranged in the vertical direction, in other words, the first and first 2
- the bent portions of the existing pipe are moved in a state where the detection wires 551a and 551b are aligned in the horizontal direction.
- a detection wire located on the bent side comes into contact with the inner surface of the existing pipe and bends.
- the first switch 555a connected to the end of the first detection wire 551a is turned ON (or OFF), and the ON signal (or the first switch 555a) OFF signal) is input to the motor controller.
- the motor controller can grasp that the existing pipe is bent toward the first detection wire 551a in the moving direction of the coating unit 5.
- the control unit 55 detects the bent portion and the bending direction of the existing pipe.
- the motor controller When the ON signal (or OFF signal) is input from the first switch 555a, the motor controller outputs a motor drive signal to the drive unit 53 after a predetermined delay time has elapsed, and is the same as the first detection wire 551a.
- the second motor 547 of the drive unit 53 is driven so as to wind the first drive wire 531a provided on the side, and then the wound first drive wire 531a is rewound to return to the original state.
- the second motor 547 of the drive unit 53 Of course, when the second switch 555b is turned on (or off), the second motor 547 of the drive unit 53 is driven so that the second drive wire 531b is wound after a predetermined delay time has elapsed. Thereafter, the second motor 547 of the driving unit 53 is driven so that the wound second driving wire 531b is rewound and returned to the original state.
- the predetermined delay time is set slightly shorter than the time from when the bent portion of the existing pipe is detected until the paint spraying portion 51 reaches the inlet of the bent portion.
- the time from when the second motor 547 is activated to when the direction of rotation is reversed is set as the time from when the bent portion is detected until the paint spraying portion 51 reaches the vicinity of the bent point at the bent portion, for example. Is done.
- the time from when the second motor 547 is started to when it is stopped is set slightly shorter than the time from when the bent portion is detected until the paint spraying portion 51 reaches the outlet of the bent portion, for example. .
- the delivery device 7 is a device capable of feeding and pulling back the paint supply pipe 3 inserted into the existing pipe at a predetermined speed.
- a motor not shown
- the third motor 71 is controlled by a signal from the operation unit.
- the coating unit 5 can be moved within the existing pipe by feeding or pulling back the paint supply pipe 3.
- the present invention is not limited to this.
- the pulling wire when a pulling wire is attached to the coating unit 5 and the feeding device 7 pulls back the paint supply pipe 3, the pulling wire is wound at the same time and the paint supply pipe 3 is sent out.
- the traction wire may be unwound at the same time.
- the coating unit 5 can be pulled back more stably than when only the paint supply pipe 3 is pulled back.
- the rotational speed of the third motor is adjusted based on the ON signal (or OFF signal) from the first and second switches 555a and 555b of the control unit 55, and the moving speed of the coating unit 5 at the bent portion. Is lower than the moving speed in the straight portion. If it does in this way, the coating in a bending part can be performed more reliably.
- the operation unit (not shown) is provided with various operation switches.
- the operator starts and stops the spraying of paint by the application unit 5 (starting and stopping of the first motor 513), and the sending device 7 is used.
- the paint supply pipe 3 can be sent out or pulled back (starting, stopping and setting of the rotation direction of the third motor 71) and the like. Further, the detection result by the paint detection sensor 35 is displayed on the operation unit, and the operator can confirm that the paint has reached the paint detection sensor 35.
- the coating unit 5 is disposed at the downstream end of an existing pipe to be painted.
- the paint supply pipe 3 and the application unit 5 are inserted from the upstream end of the existing pipe, and a suction device (not shown) is connected to the downstream end of the existing pipe, and the suction device is activated to start the paint supply pipe 3 and the application unit.
- a suction device (not shown) is connected to the downstream end of the existing pipe, and the suction device is activated to start the paint supply pipe 3 and the application unit.
- the application unit 5 may be disposed at the downstream end of the existing pipe only by the delivery device 7 without using a suction device, or after only the paint supply pipe 5 is first guided to the downstream end of the existing pipe,
- the coating unit 5 may be attached to the tip of the paint supply pipe 5.
- said suction device what was used when the deposit
- the paint supply pump (not shown) is activated to start supplying paint.
- the paint detection sensor 35 detects that the paint has reached a predetermined position, a message to that effect is displayed on the operation unit, and the first motor 513 and the third motor 71 are activated by the operator who has confirmed this display.
- the rotation direction of the third motor 71 is set to the direction in which the paint supply pipe 3 is pulled back.
- the first motor 513 and the third motor 71 are started by the operator, but based on the detection signal from the paint detection sensor 35, the first motor 513 (paint spraying part 51) and the third motor 71 (delivery). It may be arranged that at least one of the devices 7) is activated.
- the paint is sprayed from the paint spraying portion 51 of the application unit 5, and when the third motor 71 is activated, the paint supply pipe 3 is pulled back, so that the application unit 5 is predetermined. It moves in the existing pipe to the upstream end side at a speed of. Thereby, the inner surface of the existing pipe is painted in order from the downstream end side.
- the control unit 55 detects the bent portion and the bending direction, and sends a motor drive signal corresponding to the detection result to the drive unit 53 (second of the second portion). Output to the motor 547).
- the drive part 53 bends the 1st, 2nd paint hose 31a, 31b located between the paint spraying part 51 and the drive part 53 according to a bending part, and the paint spraying part 51 in the existing pipe
- the direction in which the paint is sprayed by the paint spraying unit 51 is changed by changing the posture of the paint.
- the drive unit 53 starts operating immediately before the paint spraying unit 51 enters the bent portion of the existing pipe and gradually adjusts the curvatures of the first and second paint hoses 31a and 31b according to the bent portion. To change. That is, the curvature of the first and second paint hoses 31a and 31b is gradually increased until reaching the bending point, and the curvature of the first and second paint hoses 31a and 31b is gradually decreased after the bending point. Then, immediately before the paint spraying part 51 advances the bent part of the existing pipe, the first and second paint hoses 31a and 31b are returned to the original straight state.
- the spraying direction of the paint by the paint spraying part 51 according to the bent part of the existing pipe it is possible to stably coat the inner surface of the bent part in the same manner as the straight part, The occurrence of unpainted areas can be prevented.
- the operator stops the first motor 513 and the third motor 71, and then the paint supply pipe 3 And the application
- the sending device 7 corresponds to the “moving device” of the present invention
- the first and second detection wires 551a and 551b and the first and second switches 555a and 555b correspond to the “detecting unit” of the present invention
- the first main body 533 of the drive unit 53 and / or the second main body 553 of the control unit 55 correspond to the “holding member” of the present invention
- the first and second springs 535a and 535b correspond to the “elasticity” of the present invention. It corresponds to “holding member”.
- the bending portion of the existing pipe is detected and the direction of spraying of the paint by the paint spraying portion 51 is changed, so that the occurrence of unpainted portions on the existing pipe having the bent portion is prevented. Then, the inner surface can be painted.
- the paint spraying part 51 rotates the head part 511 whose rotation axis substantially coincides with the tube axis of the existing pipe, and a plurality of paints supplied into the head part 511 are formed on the side surface of the head part 511. Therefore, the occurrence of coating unevenness is suppressed and a stable coating film can be formed on the inner surface of the existing pipe.
- the drive part 53 bends the paint supply pipe
- the direction of the paint spraying part 51 itself can be changed to change the spraying direction of the paint, and the behavior of the paint spraying part 51 passing through the bent part is also stabilized.
- the operation of the drive unit 53 is started before the paint spraying part 51 enters the bent part, and the curvature of the paint supply pipe 3 (first coating hose 31a, second coating hose 31b) is gradually changed.
- the collision of the paint spraying part 51 with the existing pipe inner surface can be greatly reduced.
- the inner surface coating at the bent portion can be stably performed, and the occurrence of unpainted portions can be prevented.
- the paint spraying part 51 can be prevented from being damaged.
- the drive unit 53 winds and unwinds the pair of drive wires 531a and 531b, one end of which is fixed to the paint spraying unit 51, and linearly connects the first and second paint hoses 31a and 31b. Since the first and second springs 535a and 535b to be held are bent, the first and second paint hoses 31a and 31b can be bent stably in two different directions. Thereby, the direction (attitude
- a pair of switches that are turned on or off when the pair of detection wires 551a and 551b and the ends of the pair of detection wires 551a and 551b are respectively connected and the connected detection wires are bent more than a predetermined amount. Since the bent portion of the existing pipe is detected using 555a and 555b, there is almost no malfunction due to noise or the like, and the bent portion of the existing pipe can be detected stably and accurately.
- the paint supply pipe 3 having a structure in which two paint hoses (the first paint hose 31 a and the second paint hose 31 b) are housed inside the outer hose 33 is used.
- the configuration of the paint supply pipe is not limited to this.
- a first paint hose 31a and a second paint hose 31b having a predetermined length (for example, 2 to 3 m) are attached to the tip of a large-diameter main hose 36 via an adapter 37 to supply the paint.
- the tube 300 may be configured.
- the paint detection sensor 35 is disposed in the main hose 36 instead of one of the two paint hoses, the paint detection sensor 35 can be easily attached.
- the pulling wire described above can be attached not to the coating unit 5 but to the adapter 37. Even if it does in this way, the effect
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Abstract
Description
図1は、本発明の実施形態による既設管内面の塗装装置の概略構成を示している。図1に示すように、実施形態による既設管内面の塗装装置1は、塗装対象となる既設管に挿入される塗料供給管3と、塗料供給管3の先端側に設けられた塗布ユニット5と、塗料供給管3の送り出し及び引き戻しを行う送出装置7と、を備える。そして、塗装装置1は、図示省略した操作部を介したオペレータの指示に基づいて、塗布ユニット5に塗料を噴射させるとともに、送出装置7に塗料供給管3の引き戻し行わせて塗布ユニット5を既設管内で下流側から上流側へと移動させることで既設管の内面に所定厚さの塗膜を形成する。
ここで、塗装対象となる既設管は、特に制限されないが、例えば図2に示すような屈曲部10a,10bを有する既設管10(特に、横管)であり、具体的には、集合住宅や事務所ビルの給水管や排水管、及び、産業用施設(産業用プラントを含む)の各種配管が該当する。
図3は、塗布ユニット5の概略構成を示している。図3に示すように、塗布ユニット5は、塗料供給管3の先端側、すなわち、既設管の下流側から順に、既設管の内面に塗料を吹付ける塗料吹付け部51と、塗料吹付け部51による塗料の吹付け方向を変更する駆動部53と、駆動部53の作動を制御する制御部55と、を含む。なお、図では省略しているが、塗料吹付け部51と駆動部53との間、及び、駆動部53と制御部55との間には、それぞれ信号線及び電源供給線が接続されており、また、制御部55の後端には上記操作部から延びる信号線及び電源供給線が接続されている。
第1モータ513は、円錐台状の外観を有するモータケース517内に収納され、上記操作部からの信号により制御されてヘッド部511をその中心線まわりに回転させる。円錐台状のモータケース517は、径が最も大きい底面がヘッド部511側を向くよう横向きに配置されている。また、モータケース517には、第1,第2塗料ホース31a,31bのそれぞれが通過する(挿通される)塗料ホース用孔が所定の間隔をあけて形成されており、第1,第2塗料ホース31a,31bが互いに離れた状態で保持される。そして、上記塗料供給ポンプによって圧送された塗料は、第1、第2塗料ホース31a,31bを介して、ヘッド部511内に、さらに言えば、ヘッド部511の内側底面に向かって供給されるようになっている。
また、円錐台状のモータケース517の最大外径、すなわち、ヘッド部511側に配置された底面の外径は、ヘッド部513の外径よりも大きく、かつ、塗装対象となる既設管の内径よりもわずかに小さくなっており、これにより、既設管内において第1モータ513及びヘッド部511は、その回転中心が当該既設管の管軸とほぼ一致するように配置される。
先端部515は、主にヘッド部511を保護するものであり、第1モータ511の回転軸の先端に回転自在に取り付けられている。
第1本体部533には、第1,第2塗料ホース31a,31bのそれぞれが通過する(挿通される)塗料ホース用孔が該第1本体部533の中心線を挟んで離れて形成されており、これにより第1,第2塗料ホース31a,31bは互いに離れた状態で保持される。また、第1本体部533の外径(最大外径)は、塗料吹付け部51のモータケース517の外径と同じか又はそれよりも僅かに小さくなっている。
ここで、第1,第2塗料ホース31a,31b及び第1,第2駆動ワイヤー531a,531bは、既設管の管軸に直交する断面内において、第1,第2塗料ホース31a,31bの断面中心同士を結ぶ線と、第1,第2駆動ワイヤー531a,531bの断面中心同士を結ぶ線と、がほぼ直交するように配置されている。
図4に示すように、駆動機構540は、第1誘導滑車541と、第2誘導滑車543と、プーリー545と、プーリー545を回転させるモータ(以下「第2モータ」という)547と、プーリー545の回転量を検知するロータリーエンコーダー549と、を有する。そして、一端が塗料吹付け部51に固定された第1駆動ワイヤー531aの他端側は第1誘導滑車541を介してプーリー545に巻き付け固定され、一端が塗料吹付け部51の後端部に固定された第2駆動ワイヤー531bの他端側は第2誘導滑車543を介して第1駆動ワイヤー531aとは逆方向からプーリー545に巻き付け固定されている。
このため、第2モータ547がプーリー545をB1方向に回転させると、第1駆動ワイヤー531aが巻取られる一方、第2駆動ワイヤー531bが巻戻され、第2モータ547がプーリー545をB1方向とは反対のB2方向に回転させると、第1駆動ワイヤー531aが巻戻される一方、第2駆動ワイヤー531bが巻取られることになる。
ここで、第2モータ547の駆動は、後述する制御部55に設けられたモータコントローラによって制御され、また、ロータリエンコンダー549の出力はモータコントローラに入力される。
駆動部53の非作動時においては、第1,第2塗料ホース31a,31bの第1本体部533と塗料吹付け部51との間に位置する部分は、第1,第2スプリング535a,535bによって直線状に保持されている(図3参照)。
この状態から第2モータ547によってプーリー545がB1方向(図4参照)に回転されると、第1駆動ワイヤー531aが巻取られるとともに第2駆動ワイヤー531bが巻戻され、塗料吹付け部51が第1駆動ワイヤー531aによって引っ張られる。これにより、図5(a)に示すように、第1,第2塗料ホース31a,31b及び第1,第2スプリング535a,535bが第1駆動ワイヤー531a側(図では上方)に曲がる。
一方、第2モータ547によってプーリー555がB1方向とは反対のB2方向(図4参照)に回転されると、第2駆動ワイヤー531bが巻取られるとともに第1駆動ワイヤー531aが巻戻され、塗料吹付け部51が第2駆動ワイヤー531bによって引っ張られる。これにより、図5(b)に示すように、第1,第2塗料ホース31a,31b及び第1,第2スプリング535a,535bが第2駆動ワイヤー531b側(図では下方)に曲がる。
第2本体部553には、駆動部53の第1本体部533と同様に、第1,第2塗料ホース31a,31bのそれぞれが通過する塗料ホース用孔が(第2本体部553の)中心線を挟んで離れて形成されており、これにより第1,第2塗料ホース31a,31bは互いに離れた状態に保持されるようになっている。また、第2本体部553の外径(最大外径)は、第1本体部533の最大外径と同じ、すなわち、モータケース519の外径と同じか又はそれよりも僅かに小さくなっている。
ここで、第1,第2塗料ホース31a,31b及び第1,第2検知ワイヤー551a,551bは、既設管の管軸に直交する断面内において、第1,第2塗料ホース31a,31bの断面中心同士を結ぶ線と、第1,第2検知ワイヤー551a,551bの断面中心同士を結ぶ線と、とがほぼ直交するように配置されている。
第1,第2スイッチ555a,555bは、第1,第2検知ワイヤー551a,555bが所定量以上撓むことによって、換言すれば、第1,第2検知ワイヤー551a,551bによってスイッチ操作部が引っ張られることによってOFF→ON(又はOFF→ON)となるものであり、例えばトグルスイッチや引張スイッチを用いることができる。
そして、上記モータコントローラは、第1スイッチ555a又は第2スイッチ555bから入力されるON信号(又はOFF信号)に基づいて駆動部53の第2モータ547の作動を制御する。
送出装置7によって塗料供給管3が引き戻されると、塗布ユニット5は既設管内を下流側から上流側に向かって移動する。第1,第2塗料ホース31a,31bは可撓性を有しており、既設管の直線部においては、塗布ユニット5は最も安定した状態、すなわち、第1,第2塗料ホース31a、31bが水平方向に並んだ状態で既設管内を移動する。
第1,第2塗料ホース31a,31bは駆動部53の第1本体部533及び制御部55の第2本体部553によって互いに離れた状態に保持され、第1,第2塗料ホース31a,31bが交差したり絡まったりすることが防止されているから、制御部55のみが回転することはなく、制御部55が回転すると、駆動部53及び塗料吹付け部51も制御部55とともに回転する。この結果、塗布ユニット5全体が既設管内の屈曲部の直前で回転し、塗布ユニット5は、第1,第2塗料ホース31a、31bが鉛直方向に並んだ状態、換言すれば、第1,第2検知ワイヤー551a,551bが水平方向に並んだ状態で既設管の屈曲部を移動する。
但し、これに限るものではなく、例えば塗布ユニット5に牽引ワイヤーを取り付けておき、送出装置7が塗料供給管3を引き戻す際には同時に牽引ワイヤーの巻取りを行い、塗料供給管3を送り出す際には同時に牽引ワイヤーの巻戻しを行うように構成してもよい。牽引ワイヤーを設けることにより、塗料供給管3のみを引き戻す場合に比べて、塗布ユニット5の安定した引き戻しを行うことができる。
また、既設管の直線部と屈曲部とで塗料供給管3の引き戻し速度(すなわち、塗布ユニット5の移動速度)を変更するようにしてもよい。この場合には、例えば制御部55の第1,2スイッチ555a,555bからのON信号(又はOFF信号)に基づいて上記第3モータの回転速度を調整し、屈曲部における塗布ユニット5の移動速度を直線部における移動速度よりも低くする。このようにすると屈曲部における塗装をより確実に行える。
まず、塗装前の準備として、塗布ユニット5を塗装対象となる既設管の下流端に配置する。例えば、既設管の上流端から塗料供給管3及び塗布ユニット5を挿入するとともに、既設管の下流端に吸引装置(図示省略)を接続し、吸引装置を起動して塗料供給管3及び塗布ユニット5を吸引しながら送出装置7により塗料供給管3を送り出すことによって、塗布ユニット5を塗装対象となる既設管の下流端に配置することができる。もちろん、吸引装置を用いることなく、送出装置7のみによって塗布ユニット5を既設管の下流端に配置させてもよいし、塗料供給管5のみを先に既設管の下流端へと導いた後、該塗料供給管5の先端部に塗布ユニット5を取り付けるようにしてもよい。なお、上記吸引装置としては例えば塗装前に既設管内面の付着物の除去を行った際に用いたものをそのまま使用することができ、塗布ユニット5を既設管の下流端に配置した後に取り外される。
具体的には、駆動部53は、塗料吹付け部51が既設管の屈曲部に進入する直前に作動を開始するとともに屈曲部に合わせて第1,第2塗料ホース31a,31bの曲率を徐々に変化させる。すなわち、屈曲点に至るまでは第1,第2塗料ホース31a,31bの曲率を徐々に増加させ、屈曲点を過ぎると第1,第2塗料ホース31a,31bの曲率を徐々に減少させる。そして、塗料吹付け部51が既設管の屈曲部を進出する直前に第1,第2塗料ホース31a,31bを元のまっすぐな状態に戻す。このように、既設管の屈曲部に合わせて塗料吹付け部51による塗料の吹付け方向を変化させることにより、直線部と同様に、屈曲部の内面の塗装を安定して行うことができ、塗り残しの発生を防止できる。
また、上述の牽引ワイヤーを、塗布ユニット5ではなく、アダプタ37に取り付けることも可能である。このようにしても、上記実施形態と同様の作用、効果を得ることができる。
Claims (10)
- 可撓性を有し、既設管に挿入される塗料供給管と、
前記塗料供給管の先端部に取り付けられ、該塗料供給管を介して供給された塗料を前記既設管の内面に吹付ける塗料吹付け部と、
前記塗料吹付け部を前記既設管内で移動させる移動装置と、
前記既設管の屈曲部を検知する検知部と、
前記検知部による検知結果に基づいて作動して前記塗料吹付け部による前記塗料の吹付け方向を変更する駆動部と、
を備える、既設管内面の塗装装置。 - 前記駆動部は、前記塗料吹付け部よりも前記塗料供給管の後端側に配置され、
当該駆動部と前記塗料吹付け部との間に位置する前記塗料供給管の部分を曲げることによって前記塗料吹付け部による前記塗料の吹付け方向を変更する、請求項1に記載の既設管内面の塗装装置。 - 前記駆動部は、前記既設管内を移動する前記塗料吹付け部が前記屈曲部に進入する直前から作動を開始して前記塗料供給管の部分の曲率を徐々に変化させるとともに、前記塗料吹付け部が前記屈曲部から進出する直前に前記塗料供給管の部分を元の状態に戻す、請求項2に記載の既設管内面の塗装装置。
- 前記駆動部は、
一端が前記塗料吹付部にそれぞれ固定された一対の駆動ワイヤーと、
前記一対の駆動ワイヤーの他端がそれぞれ接続され、当該一対の駆動ワイヤーの巻取り・巻戻しを行う駆動機構を内蔵した本体部と、
前記本体部と前記塗料吹付け部との間に位置する前記塗料供給管の部分を内側に収容して当該部分を直線状に保持するとともに曲がり変形が可能な弾性保持部材と
を備え、
前記駆動機構が前記一対の駆動ワイヤーのうちの一方の駆動ワイヤーを巻取るとともに他方の駆動ワイヤーを巻戻すことによって前記塗料供給管及び前記弾性保持部材を第1の方向に曲げる一方、前記駆動機構が前記他方の駆動ワイヤーを巻取るとともに前記一方の駆動ワイヤーを巻戻すことによって前記塗料供給管及び前記弾性保持部材を前記第1の方向とは反対の第2の方向に曲げる、請求項2に記載の既設管内面の塗装装置。 - 前記塗料供給管として二つの塗料ホースが用いられ、
少なくとも前記先端部から前記駆動部よりも後端側の所定位置までの区間、前記二つの塗料ホースを互いに分離させた状態に保持する保持部材を備え、
前記既設管の管軸に直交する断面内において、前記二つの塗料ホースの断面中心同士を結ぶ線と、前記一対の駆動ワイヤーの断面中心同士を結ぶ線と、がほぼ直交している、請求項4に記載の既設管内面の塗装装置。 - 前記移動装置は、前記既設管に挿入された前記塗料供給管を引き戻すことによって前記塗料吹付け部を前記既設管の下流側から上流側に向かって移動させる、請求項1に記載の既設管内面の塗装装置。
- [規則91に基づく訂正 01.11.2011]
前記検知部は、前記駆動部よりも前記塗料供給管の後端側に配置され、
一端が前記駆動手段にそれぞれ固定された一対の検知ワイヤーと、
前記一対の検知ワイヤーの他端がそれぞれ接続され、接続された検知ワイヤーが所定量以上撓んだときにON又はOFFとなる一対のスイッチと、
を備え、
前記屈曲部を通過する際に、前記一対の検知ワイヤーのいずれか一方が前記既設管の屈曲内側の内面に当接して前記所定量以上撓むことによって前記既設管の屈曲部及び屈曲方向を検知する、請求項6に記載の既設管内面の塗装装置。 - 前記塗料供給管として二つの塗料ホースが用いられ、
少なくとも前記先端部から前記駆動部よりも後端側の所定位置までの区間、前記二つの塗料ホースを互いに分離させた状態に保持する保持部材を備え、
前記既設管の管軸に直交する断面内において、前記二つの塗料ホースの断面中心同士を結ぶ線と、前記一対の検知ワイヤーの断面中心同士を結ぶ線と、がほぼ直交している、請求項7に記載の既設管内面の塗装装置。 - 前記塗料供給管内の前記先端部から所定量だけ後端側の位置に、前記塗料の到達を検知する塗料検知センサが設けられている、請求項1に記載の既設管内面の塗装装置。
- 前記塗料吹付け部は、
側面に複数の貫通孔が形成された有底円筒状のヘッド部と、
前記ヘッド部を回転させるモータと、
を備え、
前記モータによって前記ヘッド部を回転させることにより、前記ヘッド部内に供給された塗料を遠心力によって前記複数の貫通孔から噴射して前記既設管の内面に吹付ける、請求項1~9のいずれか1つに記載の既設管内面の塗装装置。
Priority Applications (3)
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KR1020137007374A KR20130066673A (ko) | 2010-08-25 | 2011-08-24 | 기설관 내면의 도장 장치 |
CN201180041195.9A CN103069205B (zh) | 2010-08-25 | 2011-08-24 | 既有管内面的涂装装置 |
JP2011553226A JP5270768B2 (ja) | 2010-08-25 | 2011-08-24 | 既設管内面の塗装装置 |
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PCT/JP2011/069045 WO2012026489A1 (ja) | 2010-08-25 | 2011-08-24 | 既設管内面の塗装装置 |
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JP (1) | JP5270768B2 (ja) |
KR (1) | KR20130066673A (ja) |
CN (1) | CN103069205B (ja) |
WO (1) | WO2012026489A1 (ja) |
Cited By (3)
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JP2021516151A (ja) * | 2018-03-07 | 2021-07-01 | カーライル フルイド テクノロジーズ,インコーポレイティド | 流体送出システムの状態指標のためのシステムおよび方法 |
CN115283160A (zh) * | 2022-09-30 | 2022-11-04 | 江苏捷达离心机制造有限公司 | 一种离心机制造用喷涂装置 |
JP7265657B1 (ja) | 2022-02-02 | 2023-04-26 | 太平電業株式会社 | 吸引装置 |
Families Citing this family (7)
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CN105548709A (zh) * | 2014-11-03 | 2016-05-04 | 中泰致远(天津)涂料有限公司 | 一种涂料检测系统 |
CN107803291A (zh) * | 2016-09-07 | 2018-03-16 | 四川海隆石油技术有限公司 | 弯管内防腐喷涂装置 |
CN108799691A (zh) * | 2017-05-02 | 2018-11-13 | 湖南前鑫管业有限公司 | 管道修护装置 |
CN109025883A (zh) * | 2017-06-09 | 2018-12-18 | 中国石油化工股份有限公司 | 一种快速套管重塑装置及方法 |
CN111054556B (zh) * | 2019-12-30 | 2021-04-20 | 武昌船舶重工集团有限公司 | 一种密闭舱室的喷漆涂装装置 |
CN112756156B (zh) * | 2020-12-28 | 2022-06-03 | 河北方泉管道装备有限公司 | 一种适用于弯管的管内喷涂装置 |
CN113600431B (zh) * | 2021-06-23 | 2022-10-14 | 哈尔滨工业大学 | 一种紧凑型长跨距钢丝绳牵引后置的抛涂头摆动装置 |
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- 2011-08-24 WO PCT/JP2011/069045 patent/WO2012026489A1/ja active Application Filing
- 2011-08-24 KR KR1020137007374A patent/KR20130066673A/ko not_active Application Discontinuation
- 2011-08-24 CN CN201180041195.9A patent/CN103069205B/zh not_active Expired - Fee Related
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JP7265657B1 (ja) | 2022-02-02 | 2023-04-26 | 太平電業株式会社 | 吸引装置 |
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CN115283160A (zh) * | 2022-09-30 | 2022-11-04 | 江苏捷达离心机制造有限公司 | 一种离心机制造用喷涂装置 |
Also Published As
Publication number | Publication date |
---|---|
KR20130066673A (ko) | 2013-06-20 |
JPWO2012026489A1 (ja) | 2013-10-28 |
CN103069205B (zh) | 2015-04-01 |
CN103069205A (zh) | 2013-04-24 |
JP5270768B2 (ja) | 2013-08-21 |
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