CN112517343A - Automatic coating and sintering epoxy powder anticorrosion process suitable for pipe jacking operation - Google Patents

Automatic coating and sintering epoxy powder anticorrosion process suitable for pipe jacking operation Download PDF

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Publication number
CN112517343A
CN112517343A CN202011382604.9A CN202011382604A CN112517343A CN 112517343 A CN112517343 A CN 112517343A CN 202011382604 A CN202011382604 A CN 202011382604A CN 112517343 A CN112517343 A CN 112517343A
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China
Prior art keywords
pipe
jacking
coating
rotating mechanism
epoxy powder
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Granted
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CN202011382604.9A
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Chinese (zh)
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CN112517343B (en
Inventor
杨宝风
林江源
史春
何月珠
王朝
孙洪
孙泽
高竞
刘建军
马家宝
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Ningbo Longyuanshenghong Ecological Construction Engineering Co ltd
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Ningbo Longyuanshenghong Ecological Construction Engineering Co ltd
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Publication of CN112517343A publication Critical patent/CN112517343A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D1/00—Processes for applying liquids or other fluent materials
    • B05D1/02—Processes for applying liquids or other fluent materials performed by spraying
    • B05D1/12—Applying particulate materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
    • B05B12/08—Arrangements for controlling delivery; Arrangements for controlling the spray area responsive to condition of liquid or other fluent material to be discharged, of ambient medium or of target ; responsive to condition of spray devices or of supply means, e.g. pipes, pumps or their drive means
    • B05B12/084—Arrangements for controlling delivery; Arrangements for controlling the spray area responsive to condition of liquid or other fluent material to be discharged, of ambient medium or of target ; responsive to condition of spray devices or of supply means, e.g. pipes, pumps or their drive means responsive to condition of liquid or other fluent material already sprayed on the target, e.g. coating thickness, weight or pattern
    • 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
    • B05B13/0221—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work characterised by the means for moving or conveying the objects or other work, e.g. conveyor belts
    • B05B13/0228—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work characterised by the means for moving or conveying the objects or other work, e.g. conveyor belts the movement of the objects being rotative
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B15/00—Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
    • B05B15/60—Arrangements for mounting, supporting or holding spraying apparatus
    • B05B15/68—Arrangements for adjusting the position of spray heads
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B16/00—Spray booths
    • B05B16/20—Arrangements for spraying in combination with other operations, e.g. drying; Arrangements enabling a combination of spraying operations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
    • B05D3/007—After-treatment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
    • B05D3/02—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by baking
    • B05D3/0209—Multistage baking
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
    • B05D3/02—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by baking
    • B05D3/0218—Pretreatment, e.g. heating the substrate
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
    • B05D3/12—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by mechanical means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C1/00—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods
    • B24C1/08—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods for polishing surfaces, e.g. smoothing a surface by making use of liquid-borne abrasives
    • B24C1/086—Descaling; Removing coating films
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C3/00—Abrasive blasting machines or devices; Plants
    • B24C3/02—Abrasive blasting machines or devices; Plants characterised by the arrangement of the component assemblies with respect to each other
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C9/00—Appurtenances of abrasive blasting machines or devices, e.g. working chambers, arrangements for handling used abrasive material
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)

Abstract

The invention discloses an anticorrosion process suitable for automatic smearing and sintering of epoxy powder in pipe jacking operation, which comprises the following steps: 1) automatic smearing device assembly, 2) pipe jacking joint coating treatment, 3) pipe jacking joint coating heating, 4) pipe jacking joint coating epoxy powder coating spraying, 5) coating cooling treatment and 6) joint coating thickness detection. The epoxy powder coating can preheat and heat the top pipe, so that the coating is tough and wear-resistant, the mechanical and friction damage to the coating in the construction process can be effectively prevented, the spraying mode has the advantages of safety, high efficiency, easiness in operation, no need of primer and rapidness in curing compared with a transmission manual coating mode, and the epoxy powder coating has a coating with good chemical resistance and solvent resistance and has stronger corrosion resistance in soil.

Description

Automatic coating and sintering epoxy powder anticorrosion process suitable for pipe jacking operation
Technical Field
The invention relates to an anticorrosion process suitable for automatic smearing and sintering of epoxy powder in pipe jacking operation.
Background
The pipe-jacking construction is a non-excavation construction method, and is a pipeline burying construction technology without excavation or with few excavations. The pipe jacking construction is that the friction force between the pipeline and the surrounding soil is overcome by means of the jacking force generated by jacking equipment in a working pit, the pipeline is jacked into the soil according to the designed gradient, and earthwork is transported away.
The emergence occasionally of buried pipeline's corruption perforation accident, the emergence is in pipeline welding repair mouth department more, and its leading cause is that anticorrosive repair mouth quality can not reach the anticorrosive quality of body itself, and traditional anticorrosive coating adopts the manual work to paint to waste time and energy, paints the inhomogeneous anticorrosive effect that also influences of thickness, and the construction progress is paintd slowly to the manual work, and the input cost is high.
Disclosure of Invention
The invention aims to provide a technical scheme suitable for an automatic coating and sintering epoxy powder anticorrosion process in pipe jacking operation aiming at the defects in the prior art, the pipe jacking can be preheated and heated, so that the coating is tougher and more wear-resistant, the mechanical and friction damage to the coating in the construction process can be effectively prevented, and compared with a transmission manual coating mode, the spraying mode has the advantages of safety, high efficiency, easiness in operation, no need of primer and rapidness in curing, and the epoxy powder coating has a coating with good chemical resistance and solvent resistance and stronger anticorrosion property in soil.
In order to solve the technical problems, the invention adopts the following technical scheme:
an automatic smearing and sintering epoxy powder anticorrosion process suitable for pipe jacking operation is characterized by comprising the following steps:
1) automatic dauber assembly
a. Firstly, processing a corresponding processing table according to design requirements, arranging a first sliding chute and a second sliding chute in parallel along the top surface of the processing table, respectively installing a sand blasting rust removing mechanism and a powder spraying mechanism on the first sliding chute and the second sliding chute, connecting the sand blasting rust removing mechanism and the powder spraying mechanism with the processing table through a reciprocating mechanism, and driving the sand blasting rust removing mechanism and the powder spraying mechanism to horizontally move along the first sliding chute and the second sliding chute respectively through the reciprocating mechanism so that the sand blasting rust removing mechanism and the powder spraying mechanism are aligned to the joint repairing position of a jacking pipe, thereby improving the effects and the quality of sand blasting and powder spraying;
b. then horizontally installing a bottom plate along the center of the top surface of the machining table, respectively installing a first rotating mechanism and a second rotating mechanism at two ends of the bottom plate, equally and parallelly installing support frames along the top surface of the bottom plate, wherein the support frames are positioned between the first rotating mechanism and the second rotating mechanism, respectively and symmetrically installing a heating roller and a carrier roller between two adjacent support frames, the heating roller is positioned between a first chute and a second chute, and the two ends of the top pipe can be respectively clamped and positioned through the first rotating mechanism and the second rotating mechanism, so that the stability and the reliability of the top pipe during rotation are improved, the support frames are convenient for the installation and the positioning of the heating roller and the carrier roller, the heating roller and the carrier roller are ensured to be positioned in the same horizontal plane, the support strength of the top pipe body is improved;
c. then, clamping mechanisms are installed along the top surface of the machining table, the clamping mechanisms are located on two sides of the carrier roller, meanwhile, a control box is installed on the machining table, the control box is electrically connected with the sand blasting and rust removing mechanism, the powder spraying mechanism, the reciprocating mechanism, the first rotating mechanism, the second rotating mechanism, the heating roller and the clamping mechanisms, clamping and positioning of the jacking pipes with different sizes can be achieved through the clamping mechanisms, and machining quality of the jacking pipe repaired mouth is improved;
this automatic device of paining's assembly step is simple and convenient, not only can just preheat and heat the ejector pipe, makes the coating tougher and more tough wear-resisting, can effectively prevent to the machinery and the friction damage of coating in the work progress, and this spraying mode is compared in driven manual work and is paintd the mode in addition, has safe high-efficient, and easy operation need not the priming paint, the rapid advantage of solidification.
2) Pipe jacking joint coating treatment
a. Firstly, a jacking pipe is placed on a processing table through a hoisting machine, one end of the jacking pipe close to a first rotating mechanism is inserted into the first rotating mechanism, one end of the jacking pipe is fixedly supported through the first rotating mechanism, a pipe body of the jacking pipe is supported through a carrier roller and a heating roller, the other end of the jacking pipe is fixedly supported through a second rotating mechanism, the stability of the jacking pipe after placement can be improved, the processing quality of a repaired mouth of the jacking pipe is improved, the design of the carrier roller and the heating roller can facilitate the jacking pipe to rotate under the action of the first rotating mechanism and the second rotating mechanism, the friction force is reduced, meanwhile, the heating roller can continuously heat the position of the repaired mouth of the jacking pipe, the fusion coating quality of epoxy powder at the repaired mouth position is improved, and the anti-corrosion performance is improved;
b. then clamping the pipe body of the jacking pipe through a clamping mechanism, moving the sand blasting and rust removing mechanism to the position of the jacking pipe joint along the first sliding groove through a reciprocating mechanism, manually removing oil stains and welding slag on the surface of the jacking pipe joint, and manually removing the oil stains and the welding slag to facilitate subsequent processing;
c. then starting the sand blasting rust removal mechanism to remove rust at the joint coating position of the jacking pipe, loosening the clamping mechanism while removing rust, enabling the first rotating mechanism and the second rotating mechanism to drive the jacking pipe to rotate at a constant speed by starting the first rotating mechanism and the second rotating mechanism, ensuring the first rotating mechanism and the second rotating mechanism to work synchronously, and continuously removing rust at the joint coating position;
the step of this push pipe joint coating processing is simple and convenient, has not only reduced manual operation's intensity of labour, has improved the effect of joint coating rust cleaning moreover greatly, improves the spraying quality of follow-up joint coating epoxy powder coating, improves anticorrosive effect.
3) Heating for repairing joint of jacking pipe
After the rust removal of the top pipe repaired mouth is finished, heating the heating roller to a required temperature through the control box, wherein the required temperature is lower than the design temperature of the epoxy powder, then starting the first rotating mechanism and the second rotating mechanism to drive the top pipe to rotate at a constant speed, so that the heating roller continuously heats the top pipe repaired mouth area until the temperature of the top pipe reaches the design temperature of the epoxy powder, the design temperature of the epoxy powder is 200 ℃, preheating the position of the top pipe repaired mouth through the heating roller, enabling the position of the top pipe repaired mouth to have a certain temperature, heating the position of the repaired mouth to 200 ℃ along with the heating roller, facilitating the subsequent spraying of the epoxy powder coating, and spraying the epoxy powder coating when the temperature of the top pipe repaired mouth reaches 200 ℃;
4) epoxy powder coating for pipe jacking joint coating spraying
a. Firstly, configuring corresponding epoxy powder coating according to design requirements, storing the epoxy powder coating in the powder spraying mechanism, adjusting the position of the powder spraying mechanism according to the size of the jacking pipe, and continuously spraying the repaired mouth area of the jacking pipe, wherein the powder spraying mechanism greatly improves the spraying effect and quality of the repaired mouth of the jacking pipe, and reduces the labor intensity of manual operation;
b. then starting the first rotating mechanism and the second rotating mechanism, spraying the joint coating area, rotating the joint coating area onto a heating roller, and continuously heating the top pipe through the heating roller to keep the temperature of the joint coating area of the top pipe constant, so that the coating effect of the epoxy powder coating can be effectively improved;
c. after the epoxy powder coating in the repaired area is sprayed, closing the powder spraying mechanism, and stopping heating to solidify the epoxy powder coating;
5) coating cooling treatment
a. After the epoxy powder coating is sprayed, the second rotating mechanism is separated from the port of the top pipe, a cooling water pipe is inserted into the top pipe, the cooling water pipe is placed along the position of the repaired port of the top pipe, and the cooling water pipe is communicated with external cooling water equipment;
b. then continuously inputting cooling water into the cooling water pipe through cooling water equipment, cooling the position of the top pipe joint, removing the cooling water pipe after cooling to below 90 ℃, and removing the cooling water equipment;
the method for cooling the coating has simple steps, not only effectively increases the cooling area of the top pipe joint, but also improves the cooling effect, avoids the direct contact of cooling water with the top pipe joint, and has good cooling effect.
6) Repaired mouth coating thickness detection
a. Adopting a coating thickness gauge to uniformly select 8 detection points from the upper side, the lower side, the left side and the right side of the inner side and the outer side of the top pipe joint, and sequentially detecting the detection points;
b. and when the thickness of the detection point is smaller than that of the pipe body of the jacking pipe, repairing the corresponding position by using the epoxy powder coating until the repaired mouth of the jacking pipe meets the design requirement, taking down the jacking pipe by using a hoisting machine, and performing anticorrosive processing on the repaired mouth of the next jacking pipe.
This automatic scribble anticorrosion technology of sintering epoxy powder step is simple, not only can just preheat and heat the push pipe, make the coating tougher and more wear-resisting, can effectively prevent the mechanical and friction damage to the coating in the work progress, this spraying mode is compared in driven manual work and is scribbled the mode in addition, has safe high efficiency, easy operation need not the priming, the rapid advantage of solidification, and this epoxy powder coating has the coating of good anti-chemical nature, anti-solvent nature, has stronger corrosion protection in soil.
Further, the sand blasting rust removing mechanism comprises a second fixed block, a sand blasting box and a sand blasting disc, wherein second slide rails are arranged on the top surface of the second fixed block in parallel, a third air cylinder is arranged between every two adjacent second slide rails, the sand blasting box is connected with the third air cylinder through a third piston, the bottom of the sand blasting box is connected onto the second slide rails in a sliding mode, cantilevers are symmetrically arranged on the sand blasting box, the sand blasting disc is connected with the cantilevers through a rotating shaft, a second motor is arranged at one end of the rotating shaft, sand blasting holes are formed in the sand blasting disc, the sand blasting disc is connected with the sand blasting box through a sand conveying pipe, emery can be stored through the sand blasting box, compressed air in the sand blasting box provides power for the emery, the emery enters the sand blasting disc through the sand conveying pipe, then is sprayed out through the sand blasting holes in the sand blasting disc to form high-speed spray beams, surface treatment is carried out on the joint position of the top pipe, the rotating shaft is driven to rotate through the second motor, the injection angle of the sand spraying hole can be adjusted through the sand spraying disc, the repaired ports of the push pipes with different sizes are subjected to surface treatment, the sand spraying box can achieve horizontal movement through pushing of the third piston rod under the action of the third cylinder, the distance between the sand spraying disc and the push pipes is adjusted, and the second slide rail improves the stability and the reliability of the horizontal movement of the sand spraying box.
Further, the powder spraying mechanism comprises a powder storage box, a third fixing block and a stand column, the powder storage box is installed on the side face of the processing table, the stand column is vertically and fixedly installed on the third fixing block, second positioning blocks are installed on the side face of the stand column from top to bottom at equal intervals, a fourth air cylinder is installed on the top face of each second positioning block, a fourth piston rod with a material conveying hole is installed on each fourth air cylinder, the material conveying holes are connected with the powder storage box through powder conveying pipes, powder spray heads with the same size are installed at the end portion of each fourth piston rod, the powder storage box is used for storing epoxy powder paint, the epoxy powder paint can be conveyed to the corresponding powder spray heads through the powder conveying pipes under the action of a material conveying pump in the storage box, the spraying of the top pipe filling opening is achieved, the three fourth air cylinders which are distributed in parallel up and down can enable the corresponding powder spray heads to be close to the filling opening of the top pipe according to, after the repaired mouth is subjected to primary powder spraying, powder spraying can be carried out twice to cover, the quality and the effect of the powder spraying are greatly improved, the stand column improves the stability and the reliability of three spray heads during working, and the influence on the spraying effect due to the shaking of the powder spray heads is avoided.
Further, the reciprocating mechanism comprises a third motor, a third positioning block, a screw rod and a boosting block, the third motor and the third positioning block are fixedly installed on the bottom surface of the machining table and are respectively located below the first sliding groove and the second sliding groove, the third motor is connected with the third positioning block through the screw rod, the boosting block is sleeved on the screw rod and is matched with the first sliding groove and the second sliding groove, the top end of the boosting block is respectively and fixedly connected with the second fixing block and the third fixing block, the screw rod is driven to rotate through the third motor, then the boosting block can respectively drive the sand blasting mechanism and the powder spraying mechanism to move to the position of the repaired mouth of the pipe, and the effects and the quality of sand blasting and powder spraying of the repaired mouth are improved.
Further, first rotary mechanism and second rotary mechanism all include first support, first motor, the fixed disk, rolling disc and straining device, the fixed disk passes through bumper shock absorber fixed mounting in one side of first support, first motor fixed mounting is at the opposite side of first support, the rolling disc rotates and connects first motor, and the rolling disc is located the opposite side of fixed disk, straining device evenly installs on the outer circumference side of rolling disc, can improve the stability and the reliability of first motor installation greatly through first support, the bumper shock absorber has improved the stability of being connected between fixed disk and the first support, the fixed disk also can play the effect of support to the rolling disc, first motor drives the rolling disc rotatory, and then can drive the push pipe through straining device and rotate, satisfy the needs of joint sealing position processing, reduce manual operation's intensity of labour.
Furthermore, straining device includes ejector pin, dead lever and telescopic link, and dead lever fixed mounting is on the rolling disc, and the ejector pin passes through the telescopic link and connects the dead lever, and the upper end of telescopic link is rotated and is connected on the ejector pin, and the lower extreme of telescopic link passes through threaded connection the dead lever rotates the telescopic link, can adjust the interval between ejector pin and the dead lever, satisfies the inboard support of port to not unidimensional push pipe, improves the stability when push pipe rotates.
Furthermore, install first slide rail and second support on the top surface of bottom plate, install first cylinder on the second support, first support sliding connection on the second rotary mechanism is on first slide rail, first cylinder passes through the first motor of first piston rod connection on the second rotary mechanism, the second support has improved the stability of being connected between first cylinder and the bottom plate, through first cylinder through the first piston rod drive first motor back-and-forth movement, and then can adjust the interval between rolling disc and the pipe jacking port, first slide rail has improved gliding stability of first support and reliability.
Further, clamping mechanism includes first fixed block, first locating piece, the second cylinder, boost plate and clamping component, first fixed block symmetry is installed on the top surface of processing platform, install two guide arms that are parallel to each other between two adjacent first fixed blocks, first locating piece fixed mounting is on the top surface of first fixed block, the boost plate cup joints on the guide arm, second cylinder fixed mounting is at the lateral surface of first locating piece, the second cylinder passes through the second piston rod and connects the boost plate, clamping component installs on the boost plate, drive the boost plate through the second piston rod through the second cylinder and remove along the horizontal direction, can realize that clamping component presss from both sides tight location to the push pipe, the guide arm has improved boost plate horizontal migration's stability and reliability.
Further, clamping component includes fixed clamping piece and removal clamping piece, and fixed clamping piece fixed mounting is on the boosting board, is provided with the spacing groove on the boosting board, and the removal clamping piece passes through the top of adjusting the pole connection at fixed clamping piece, installs the stopper on the removal clamping piece, and the stopper removes to be connected in the spacing groove, adjusts the pole through rotating, can drive the removal clamping piece and reciprocate, adjusts the interval between removal clamping piece and the fixed clamping piece, satisfies the tight location of clamp to not unidimensional push pipe.
Due to the adoption of the technical scheme, the invention has the following beneficial effects:
this automatic scribble anticorrosion technology of sintering epoxy powder step is simple, not only can just preheat and heat the push pipe, make the coating tougher and more wear-resisting, can effectively prevent the mechanical and friction damage to the coating in the work progress, this spraying mode is compared in driven manual work and is scribbled the mode in addition, has safe high efficiency, easy operation need not the priming, the rapid advantage of solidification, and this epoxy powder coating has the coating of good anti-chemical nature, anti-solvent nature, has stronger corrosion protection in soil.
Drawings
The invention will be further described with reference to the accompanying drawings in which:
FIG. 1 is an effect diagram of an automatic coating device in an automatic coating and sintering epoxy powder anticorrosion process, which is suitable for pipe jacking operation;
FIG. 2 is a schematic structural view of a first rotating mechanism according to the present invention;
FIG. 3 is a schematic structural view of a second rotating mechanism according to the present invention;
FIG. 4 is a schematic view of the clamping mechanism of the present invention;
FIG. 5 is a schematic view of the clamp assembly of the present invention;
FIG. 6 is a schematic structural diagram of a sand blasting rust removing mechanism in the invention;
FIG. 7 is a schematic view of the powder spray mechanism of the present invention;
fig. 8 is a schematic structural view of the reciprocating mechanism of the present invention.
In the figure: 1-a processing table; 2-a bottom plate; 3-a first rotation mechanism; 4-a second rotation mechanism; 5-a support frame; 6-carrying roller; 7-heating roller; 8-a clamping mechanism; 9-sand blasting and rust removing mechanism; 10-a powder spray mechanism; 11-a first runner; 12-a second runner; 13-a first scaffold; 14-a first electric machine; 15-fixing the disc; 16-a rotating disc; 17-a shock absorber; 18-a mandril; 19-a fixation rod; 20-a telescopic rod; 21-a first slide rail; 22-a second support; 23-a first cylinder; 24-a first piston rod; 25-a first fixed block; 26-a first positioning block; 27-a boosting plate; 28-a clamping assembly; 29-a guide bar; 30-a second cylinder; 31-a second piston rod; 32-a fixed clip; 33-moving the jaws; 34-adjusting rod; 35-a limiting groove; 36-a limiting block; 37-a second fixed block; 38-sandblasting box; 39-a third cylinder; 40-a second slide rail; 41-cantilever; 42-a sand blast pan; 43-a second motor; 44-a third fixed block; 45-column; 46-a powder storage box; 47-a second locating block; 48-a fourth cylinder; 49-a fourth piston rod; 50-powder spray head; 51-powder delivery pipe; 52-a third motor; 53-third locating piece; 54-a screw; 55-boosting block; 56-sand conveying pipe; 57-blast holes.
Detailed Description
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
It is noted that the terms first, second and the like in the description and in the claims, and in the drawings, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. Furthermore, the terms "comprising" and "having," as well as any variations thereof, are intended to cover non-exclusive inclusions.
As shown in fig. 1 to 8, the anti-corrosion process for automatically coating and sintering epoxy powder in pipe jacking operation according to the present invention comprises the following steps:
1) automatic dauber assembly
a. Firstly, processing a corresponding processing table 1 according to design requirements, arranging a first sliding chute 11 and a second sliding chute 12 in parallel along the top surface of the processing table 1, respectively installing a sand blasting rust removing mechanism 9 and a powder spraying mechanism 10 on the first sliding chute 11 and the second sliding chute 12, connecting the sand blasting rust removing mechanism 9 and the powder spraying mechanism 10 with the processing table 1 through a reciprocating mechanism, and driving the sand blasting rust removing mechanism 9 and the powder spraying mechanism 10 to horizontally move along the first sliding chute 11 and the second sliding chute 12 respectively through the reciprocating mechanism so that the sand blasting rust removing mechanism 9 and the powder spraying mechanism 10 are aligned to the joint repairing position of a jacking pipe, thereby improving the effects and quality of sand blasting rust removing and powder spraying;
the sand blasting and rust removing mechanism 9 comprises a second fixed block 37, a sand blasting box 38 and a sand blasting disc 42, wherein second slide rails 40 are arranged on the top surface of the second fixed block 37 in parallel, a third air cylinder 39 is arranged between every two adjacent second slide rails 40, the sand blasting box 38 is connected with the third air cylinder 39 through a third piston, the bottom of the sand blasting box 38 is connected onto the second slide rails 40 in a sliding manner, cantilevers 41 are symmetrically arranged on the sand blasting box 38, the sand blasting disc 42 is connected with the cantilevers 41 through a rotating shaft, a second motor 43 is arranged at one end of the rotating shaft, a sand blasting hole 57 is arranged on the sand blasting disc 42, the sand blasting disc 42 is connected with the sand blasting box 38 through a sand conveying pipe 56, the carborundum can be stored through the sand blasting box 38, compressed air in the sand blasting box 38 provides power for the carborundum, so that the carborundum enters the sand blasting disc 42 through the sand conveying pipe 56, and is sprayed out through the sand blasting hole 57 on the sand blasting, the cantilever 41 improves the stability and reliability of the installation of the sand-blasting disk 42, the second motor 43 drives the rotating shaft to rotate, the injection angle of the sand-blasting hole 57 can be adjusted through the sand-blasting disk 42, the requirement of surface treatment on repaired ports of push pipes with different sizes is met, the sand-blasting box 38 can horizontally move under the action of the third air cylinder 39 through the pushing of the third piston rod, the distance between the sand-blasting disk 42 and the push pipes is adjusted, and the second sliding rail 40 improves the stability and reliability of the horizontal movement of the sand-blasting box 38.
The powder spraying mechanism 10 comprises a powder storage box 46, a third fixing block 44 and a stand column 45, wherein the powder storage box 46 is installed on the side face of the processing table 1, the stand column 45 is vertically and fixedly installed on the third fixing block 44, second positioning blocks 47 are installed on the side face of the stand column 45 from top to bottom at equal intervals, a fourth cylinder 48 is installed on the top face of each second positioning block 47, a fourth piston rod 49 with a material conveying hole is installed on each fourth cylinder 48, the material conveying holes are connected with the powder storage box 46 through powder conveying pipes 51, powder spray heads 50 with the same size are installed at the end portion of each fourth piston rod 49, the powder storage box 46 is used for storing epoxy powder paint, the epoxy powder paint can be conveyed to the corresponding powder spray heads 50 through the powder conveying pipes 51 under the action of a material conveying pump in the storage box to realize spraying of the repaired mouth, and the three fourth cylinders 48 which are distributed in parallel up and down radian can enable the corresponding powder spray heads 50 to be close to the corresponding powder spray heads 50 according to Repaired mouth carries out powder spraying to the repaired mouth once after, can also carry out twice powder spraying and cover, has improved the quality and the effect of powder spraying greatly, and stand 45 has improved the stability and the reliability of three shower nozzle during operation, avoids rocking because of powder shower nozzle 50 and influences the spraying effect.
The reciprocating mechanism comprises a third motor 52, a third positioning block 53, a screw rod 54 and a boosting block 55, the third motor 52 and the third positioning block 53 are fixedly installed on the bottom surface of the machining table 1 and are respectively located below the first sliding chute 11 and the second sliding chute 12, the third motor 52 is connected with the third positioning block 53 through the screw rod 54, the boosting block 55 is sleeved on the screw rod 54, the boosting block 55 is matched with the first sliding chute 11 and the second sliding chute 12, the top end of the boosting block 55 is respectively and fixedly connected with the second fixing block 37 and the third fixing block 44, the screw rod 54 is driven to rotate through the third motor 52, the sand-blasting rust-removing mechanism 9 and the powder spraying mechanism 10 can be respectively driven to move to the position of the repaired mouth through the boosting block 55, and the effects and the quality of sand-blasting rust-removing and powder spraying of the repaired mouth are improved.
b. Then horizontally installing a bottom plate 2 along the center of the top surface of the processing table 1, respectively installing a first rotating mechanism 3 and a second rotating mechanism 4 at two ends of the bottom plate 2, installing support frames 5 in parallel at equal intervals along the top surface of the bottom plate 2, wherein the support frames 5 are positioned between the first rotating mechanism 3 and the second rotating mechanism 4, respectively symmetrically installing a heating roller 7 and a carrier roller 6 between two adjacent support frames 5, the heating roller 7 is positioned between a first chute 11 and a second chute 12, the two ends of the jacking pipe can be clamped and positioned through the first rotating mechanism 3 and the second rotating mechanism 4 respectively, so that the stability and reliability of the jacking pipe during rotation are improved, the supporting frame 5 is convenient for mounting and positioning the heating roller 7 and the carrier roller 6, the heating roller 7 and the carrier roller 6 are ensured to be positioned in the same horizontal plane, the supporting strength of the jacking pipe body is improved, and the jacking pipe is placed to be inclined so as to influence the anti-corrosion treatment of the repaired mouth position;
the first rotating mechanism 3 and the second rotating mechanism 4 both comprise a first support 13, a first motor 14, a fixed disc 15, a rotating disc 16 and a tensioning mechanism, the fixed disc 15 is fixedly arranged on one side of the first support 13 through a shock absorber 17, the first motor 14 is fixedly arranged on the other side of the first support 13, the rotating disc 16 is rotatably connected with the first motor 14, the rotating disc 16 is positioned on the other side of the fixed disc 15, the tensioning mechanism is uniformly arranged on the outer circumferential side surface of the rotating disc 16, the mounting stability and reliability of the first motor 14 can be greatly improved through the first support 13, the shock absorber 17 improves the connection stability between the fixed disc 15 and the first support 13, the fixed disc 15 can also play a supporting role for the rotating disc 16, the first motor 14 drives the rotating disc 16 to rotate, and further, a jacking pipe can be driven to rotate through the tensioning mechanism, and the processing requirement of a joint position can be met, the labor intensity of manual operation is reduced. The tensioning mechanism comprises an ejector rod 18, a fixed rod 19 and an expansion rod 20, the fixed rod 19 is fixedly mounted on the rotating disc 16, the ejector rod 18 is connected with the fixed rod 19 through the expansion rod 20, the upper end of the expansion rod 20 is rotatably connected onto the ejector rod 18, the lower end of the expansion rod 20 is connected with the fixed rod 19 through threads, the expansion rod 20 is rotated, the distance between the ejector rod 18 and the fixed rod 19 can be adjusted, the requirement for supporting the inner sides of ports of the jacking pipes with different sizes is met, and the stability of the jacking pipes during rotation is improved.
Install first slide rail 21 and second support 22 on the top surface of bottom plate 2, install first cylinder 23 on the second support 22, first support 13 sliding connection on the second rotary mechanism 4 is on first slide rail 21, first cylinder 23 passes through first motor 14 on first piston rod 24 connection second rotary mechanism 4, second support 22 has improved the stability of being connected between first cylinder 23 and bottom plate 2, drive first motor 14 back-and-forth movement through first cylinder 23 through first piston rod 24, and then can be in order to adjust the interval between rolling disc 16 and the push pipe port, first slide rail 21 has improved the gliding stability and the reliability of first support 13.
c. Then, a clamping mechanism 8 is installed along the top surface of the machining table 1, the clamping mechanism 8 is located on two sides of the carrier roller 6, a control box is installed on the machining table 1, the control box is electrically connected with a sand blasting and rust removing mechanism 9, a powder spraying mechanism 10, a reciprocating mechanism, a first rotating mechanism 3, a second rotating mechanism 4, a heating roller 7 and the clamping mechanism 8, clamping and positioning of the jacking pipes with different sizes can be achieved through the clamping mechanism 8, and machining quality of the jacking pipe repaired mouth is improved;
the clamping mechanism 8 comprises first fixing blocks 25, first positioning blocks 26, second air cylinders 30, a boosting plate 27 and clamping assemblies 28, the first fixing blocks 25 are symmetrically installed on the top surface of the machining table 1, two guide rods 29 which are parallel to each other are installed between every two adjacent first fixing blocks 25, the first fixing blocks 26 are fixedly installed on the top surface of the first fixing blocks 25, the boosting plate 27 is sleeved on the guide rods 29, the second air cylinders 30 are fixedly installed on the outer side surfaces of the first fixing blocks 26, the second air cylinders 30 are connected with the boosting plate 27 through second piston rods 31, the clamping assemblies 28 are installed on the boosting plate 27, the second air cylinders 30 drive the boosting plate 27 to move along the horizontal direction through the second piston rods 31, the clamping assemblies 28 can clamp and position the jacking pipes, and the guide rods 29 improve the stability and reliability of the horizontal movement of the boosting plate 27. Clamping assembly 28 includes fixed clamping piece 32 and removal clamping piece 33, fixed clamping piece 32 fixed mounting is on boosting board 27, be provided with spacing groove 35 on boosting board 27, removal clamping piece 33 is connected in fixed clamping piece 32's top through adjusting pole 34, install stopper 36 on the removal clamping piece 33, stopper 36 removes the connection in spacing groove 35, through rotating adjusting pole 34, can drive removal clamping piece 33 and reciprocate, adjust the interval between removal clamping piece 33 and the fixed clamping piece 32, satisfy the tight location of clamp to the not unidimensional push pipe.
This automatic device of paining's assembly step is simple and convenient, not only can just preheat and heat the ejector pipe, makes the coating tougher and more tough wear-resisting, can effectively prevent to the machinery and the friction damage of coating in the work progress, and this spraying mode is compared in driven manual work and is paintd the mode in addition, has safe high-efficient, and easy operation need not the priming paint, the rapid advantage of solidification.
2) Pipe jacking joint coating treatment
a. Firstly, a jacking pipe is placed on a processing table 1 through a hoisting machine, one end of the jacking pipe close to a first rotating mechanism 3 is inserted into the first rotating mechanism 3, one end of the jacking pipe is fixedly supported through the first rotating mechanism 3, a pipe body of the jacking pipe is supported through a carrier roller 6 and a heating roller 7, and the other end of the jacking pipe is fixedly supported through a second rotating mechanism 4, so that the stability of the jacking pipe after placement can be improved, the processing quality of a repaired mouth of the jacking pipe is improved, the design of the carrier roller 6 and the heating roller 7 can facilitate the rotation of the jacking pipe under the action of the first rotating mechanism 3 and the second rotating mechanism 4, the friction force is reduced, meanwhile, the heating roller 7 can continuously heat the repaired mouth of the jacking pipe, the fusion coating quality of epoxy powder at the repaired mouth position is improved, and the corrosion resistance is improved;
b. then clamping the pipe body of the jacking pipe through a clamping mechanism 8, moving a sand blasting and rust removing mechanism 9 to the position of the repaired mouth of the jacking pipe along a first sliding chute 11 through a reciprocating mechanism, manually removing oil stains and welding slag on the surface of the repaired mouth of the jacking pipe, and manually removing the oil stains and the welding slag to facilitate subsequent processing;
c. then starting a sand blasting rust removal mechanism 9 to remove rust at the joint coating position of the jacking pipe, loosening a clamping mechanism 8 while removing rust, enabling a first rotating mechanism 3 and a second rotating mechanism 4 to drive the jacking pipe to rotate at a constant speed by starting the first rotating mechanism 3 and the second rotating mechanism 4, ensuring that the first rotating mechanism 3 and the second rotating mechanism 4 work synchronously, and continuously removing rust at the joint coating position, enabling the jacking pipe to rotate at a constant speed through the design of the first rotating mechanism 3 and the second rotating mechanism 4, and continuously removing rust by the sand blasting rust removal mechanism 9, so that the rust removal effect at the joint coating position is improved, and the subsequent spraying of epoxy powder coating is facilitated;
the step of this push pipe joint coating processing is simple and convenient, has not only reduced manual operation's intensity of labour, has improved the effect of joint coating rust cleaning moreover greatly, improves the spraying quality of follow-up joint coating epoxy powder coating, improves anticorrosive effect.
3) Heating for repairing joint of jacking pipe
After the rust removal of the top pipe repaired mouth is finished, heating the heating roller 7 to a required temperature through the control box, wherein the required temperature is lower than the design temperature of the epoxy powder, then starting the first rotating mechanism 3 and the second rotating mechanism 4 to drive the top pipe to rotate at a constant speed, so that the heating roller 7 continuously heats the top pipe repaired mouth area until the temperature of the top pipe reaches the design temperature of the epoxy powder, wherein the design temperature of the epoxy powder is 200 ℃, the top pipe repaired mouth position can be preheated through the heating roller 7, the top pipe repaired mouth position has a certain temperature, the repaired mouth position is heated to 200 ℃ along with the heating roller 7, the subsequent spraying of the epoxy powder coating is facilitated, and when the top pipe repaired mouth temperature reaches 200 ℃, the spraying of the epoxy powder coating can be carried out;
4) epoxy powder coating for pipe jacking joint coating spraying
a. Firstly, configuring corresponding epoxy powder coating according to design requirements, storing the epoxy powder coating in the powder spraying mechanism 10, adjusting the position of the powder spraying mechanism 10 according to the size of the jacking pipe, and continuously spraying the repaired mouth area of the jacking pipe, wherein the powder spraying mechanism 10 greatly improves the spraying effect and quality of the repaired mouth of the jacking pipe, and reduces the labor intensity of manual operation;
the epoxy powder coating adopts the raw materials of phenolic aldehyde modified epoxy resin, hydrogenated phenoxy resin, coupling agent, low-temperature curing agent, titanium dioxide, wollastonite powder, feldspar powder, leveling agent, brightener, benzoin and anti-caking agent.
b. Then, the first rotating mechanism 3 and the second rotating mechanism 4 are started, the repaired mouth area is sprayed and then rotated onto the heating roller 7, and the top pipe is continuously heated through the heating roller 7, so that the temperature of the repaired mouth area of the top pipe is kept constant, and the smearing effect of the epoxy powder coating can be effectively improved;
c. after the epoxy powder coating in the repaired area is sprayed, closing the powder spraying mechanism 10, and stopping heating to solidify the epoxy powder coating;
5) coating cooling treatment
a. After the epoxy powder coating is sprayed, the second rotating mechanism 4 is separated from the port of the top pipe, a cooling water pipe is inserted into the top pipe, the cooling water pipe is placed along the position of the repaired port of the top pipe, and the cooling water pipe is communicated with external cooling water equipment;
b. then continuously inputting cooling water into the cooling water pipe through cooling water equipment, cooling the position of the top pipe joint, removing the cooling water pipe after cooling to below 90 ℃, and removing the cooling water equipment;
the method for cooling the coating has simple steps, not only effectively increases the cooling area of the top pipe joint, but also improves the cooling effect, avoids the direct contact of cooling water with the top pipe joint, and has good cooling effect.
6) Repaired mouth coating thickness detection
a. Adopting a coating thickness gauge to uniformly select 8 detection points from the upper side, the lower side, the left side and the right side of the inner side and the outer side of the top pipe joint, and sequentially detecting the detection points;
b. and when the thickness of the detection point is smaller than that of the pipe body of the jacking pipe, repairing the corresponding position by using the epoxy powder coating until the repaired mouth of the jacking pipe meets the design requirement, taking down the jacking pipe by using a hoisting machine, and performing anticorrosive processing on the repaired mouth of the next jacking pipe.
This automatic scribble anticorrosion technology of sintering epoxy powder step is simple, not only can just preheat and heat the push pipe, make the coating tougher and more wear-resisting, can effectively prevent the mechanical and friction damage to the coating in the work progress, this spraying mode is compared in driven manual work and is scribbled the mode in addition, has safe high efficiency, easy operation need not the priming, the rapid advantage of solidification, and this epoxy powder coating has the coating of good anti-chemical nature, anti-solvent nature, has stronger corrosion protection in soil.
The above is only a specific embodiment of the present invention, but the technical features of the present invention are not limited thereto. Any simple variations, equivalent substitutions or modifications based on the present invention to achieve substantially the same technical effects are within the scope of the present invention.

Claims (9)

1. An automatic smearing and sintering epoxy powder anticorrosion process suitable for pipe jacking operation is characterized by comprising the following steps:
1) automatic dauber assembly
a. Firstly, processing a corresponding processing table according to design requirements, arranging a first sliding chute and a second sliding chute in parallel along the top surface of the processing table, respectively installing a sand blasting rust removing mechanism and a powder spraying mechanism on the first sliding chute and the second sliding chute, and connecting the sand blasting rust removing mechanism and the powder spraying mechanism with the processing table through a reciprocating mechanism;
b. then horizontally installing a bottom plate along the center of the top surface of the processing table, respectively installing a first rotating mechanism and a second rotating mechanism at two ends of the bottom plate, and parallelly installing support frames at equal intervals along the top surface of the bottom plate, wherein the support frames are positioned between the first rotating mechanism and the second rotating mechanism, a heating roller and a carrier roller are respectively and symmetrically installed between every two adjacent support frames, and the heating roller is positioned between a first sliding chute and a second sliding chute;
c. then, installing clamping mechanisms along the top surface of the processing table, wherein the clamping mechanisms are positioned at two sides of the carrier roller, installing a control box on the processing table, and electrically connecting the control box with the sand blasting and rust removing mechanism, the powder spraying mechanism, the reciprocating mechanism, the first rotating mechanism, the second rotating mechanism, the heating roller and the clamping mechanisms;
2) pipe jacking joint coating treatment
a. Firstly, a jacking pipe is placed on a processing table through a hoisting machine, one end of the jacking pipe close to a first rotating mechanism is inserted into the first rotating mechanism, one end of the jacking pipe is fixedly supported through the first rotating mechanism, a pipe body of the jacking pipe is supported through a carrier roller and a heating roller, and the other end of the jacking pipe is fixedly supported through a second rotating mechanism;
b. then clamping the pipe body of the jacking pipe through a clamping mechanism, moving the sand blasting and rust removing mechanism to the position of the jacking pipe joint along the first sliding chute through a reciprocating mechanism, and manually removing oil stains and welding slag on the surface of the jacking pipe joint;
c. then starting the sand blasting and derusting mechanism to derust the repaired mouth position of the top pipe, loosening the clamping mechanism while derusting, enabling the first rotating mechanism and the second rotating mechanism to drive the top pipe to rotate at a constant speed by starting the first rotating mechanism and the second rotating mechanism, ensuring the first rotating mechanism and the second rotating mechanism to work synchronously, and continuously derusting the repaired mouth position;
3) heating for repairing joint of jacking pipe
After the rust removal of the repaired mouth of the jacking pipe is finished, heating the heating roller to the required temperature through the control box, and then starting the first rotating mechanism and the second rotating mechanism to drive the jacking pipe to rotate at a constant speed, so that the heating roller continuously heats the repaired mouth area of the jacking pipe until the temperature of the jacking pipe reaches the designed temperature of the epoxy powder;
4) epoxy powder coating for pipe jacking joint coating spraying
a. Firstly, configuring corresponding epoxy powder coating according to design requirements, storing the epoxy powder coating in a powder spraying mechanism, adjusting the position of the powder spraying mechanism according to the size of a jacking pipe, and continuously spraying a repaired mouth area of the jacking pipe;
b. then starting the first rotating mechanism and the second rotating mechanism, spraying the joint coating area, rotating the joint coating area onto a heating roller, and continuously heating the top pipe through the heating roller to keep the temperature of the joint coating area of the top pipe constant;
c. after the epoxy powder coating in the repaired area is sprayed, closing the powder spraying mechanism, and stopping heating to solidify the epoxy powder coating;
5) coating cooling treatment
a. After the epoxy powder coating is sprayed, the second rotating mechanism is separated from the port of the top pipe, a cooling water pipe is inserted into the top pipe, the cooling water pipe is placed along the position of the repaired port of the top pipe, and the cooling water pipe is communicated with external cooling water equipment;
b. then continuously inputting cooling water into the cooling water pipe through cooling water equipment, cooling the position of the top pipe joint, removing the cooling water pipe after cooling to below 90 ℃, and removing the cooling water equipment;
6) repaired mouth coating thickness detection
a. Adopting a coating thickness gauge to uniformly select 8 detection points from the upper side, the lower side, the left side and the right side of the inner side and the outer side of the top pipe joint, and sequentially detecting the detection points;
b. and when the thickness of the detection point is smaller than that of the pipe body of the jacking pipe, repairing the corresponding position by using the epoxy powder coating until the repaired mouth of the jacking pipe meets the design requirement, taking down the jacking pipe by using a hoisting machine, and performing anticorrosive processing on the repaired mouth of the next jacking pipe.
2. The automatic smearing and sintering epoxy powder anticorrosion process suitable for pipe jacking operation according to claim 1, characterized in that: sandblast rust cleaning mechanism includes second fixed block, sandblast case and sandblast dish, parallel arrangement has the second slide rail on the top surface of second fixed block, adjacent two install the third cylinder between the second slide rail, the sandblast case passes through third piston connection the third cylinder, just the bottom sliding connection of sandblast case is in on the second slide rail, the cantilever is installed to the symmetry on the sandblast case, the sandblast dish is connected through the pivot the cantilever, the second motor is installed to the one end of pivot, install the sandblast hole on the sandblast dish, the sandblast dish is through defeated sand union coupling the sandblast case.
3. The automatic smearing and sintering epoxy powder anticorrosion process suitable for pipe jacking operation according to claim 2, characterized in that: powder spraying mechanism includes powder storage case, third fixed block and stand, the powder storage case install in on the side of processing platform, the vertical fixed mounting of stand is in on the third fixed block, from last down equidistant second locating piece of installing, every on the side of stand all install the fourth cylinder on the top surface of second locating piece, every install the fourth piston rod that has the conveying hole on the fourth cylinder respectively, the conveying hole pass through the powder conveying pipeline with the powder storage case is connected, every the powder shower nozzle that the size equals is all installed to the tip of fourth piston rod.
4. The automatic smearing and sintering epoxy powder anticorrosion process suitable for pipe jacking operation according to claim 3, characterized in that: the reciprocating mechanism comprises a third motor, a third positioning block, a screw rod and a boosting block, the third motor and the third positioning block are fixedly mounted on the bottom surface of the machining table and are respectively located below the first sliding groove and the second sliding groove, the third motor is connected with the third positioning block through the screw rod, the boosting block is sleeved on the screw rod and is matched with the first sliding groove and the second sliding groove, and the top end of the boosting block is respectively fixedly connected with the second fixing block and the third fixing block.
5. The automatic smearing and sintering epoxy powder anticorrosion process suitable for pipe jacking operation according to claim 1, characterized in that: first rotary mechanism with second rotary mechanism all includes first support, first motor, fixed disk, rolling disc and straining device, the fixed disk passes through bumper shock absorber fixed mounting in one side of first support, first motor fixed mounting in the opposite side of first support, the rolling disc rotates and connects first motor, just the rolling disc is located the opposite side of fixed disk, straining device evenly installs on the outer circumference side of rolling disc.
6. The automatic smearing and sintering epoxy powder anticorrosion process suitable for pipe jacking operation according to claim 5, characterized in that: the tensioning mechanism comprises an ejector rod, a fixed rod and a telescopic rod, the fixed rod is fixedly mounted on the rotating disc, and the ejector rod is connected with the fixed rod through the telescopic rod.
7. The automatic smearing and sintering epoxy powder anticorrosion process suitable for pipe jacking operation according to claim 5, characterized in that: the top surface of the bottom plate is provided with a first sliding rail and a second support, the second support is provided with a first air cylinder, the first support on the second rotating mechanism is connected to the first sliding rail in a sliding mode, and the first air cylinder is connected to the first motor on the second rotating mechanism through a first piston rod.
8. The automatic smearing and sintering epoxy powder anticorrosion process suitable for pipe jacking operation according to claim 1, characterized in that: clamping mechanism includes first fixed block, first locating piece, second cylinder, boosting board and clamping component, first fixed block symmetry is installed on the top surface of processing platform, adjacent two install two guide arms that are parallel to each other between the first fixed block, first locating piece fixed mounting is on the top surface of first fixed block, the boosting board cup joints on the guide arm, second cylinder fixed mounting is at the lateral surface of first locating piece, the second cylinder passes through the second piston rod and connects the boosting board, clamping component installs on the boosting board.
9. The automatic smearing and sintering epoxy powder anticorrosion process suitable for pipe jacking operation according to claim 8, characterized in that: the clamping assembly comprises a fixed clamping piece and a movable clamping piece, the fixed clamping piece is fixedly installed on the boosting plate, a limiting groove is formed in the boosting plate, the movable clamping piece is connected to the top of the fixed clamping piece through an adjusting rod, a limiting block is installed on the movable clamping piece, and the limiting block is movably connected to the limiting groove.
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Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10251825A (en) * 1997-03-12 1998-09-22 Kubota Corp Thermal spraying method for cast iron tube
CN1254808A (en) * 1998-11-25 2000-05-31 中国科学院金属腐蚀与防护研究所 Full-automatic internal and external coating method for epoxy resin jacketed underground pipeline and its production line
CN101602043A (en) * 2008-08-20 2009-12-16 上海建冶科技工程股份有限公司 Employing is melted the knot epoxy powder DN3600 buried steel pipe is carried out outer preserving method
CN104874514A (en) * 2015-06-08 2015-09-02 威海丰泰新材料科技股份有限公司 Roll spraying device
CN108296051A (en) * 2018-01-29 2018-07-20 周佳裕 A kind of Automobile shaft painting installation with drying polishing function
CN108816613A (en) * 2018-08-02 2018-11-16 何碧侠 A kind of pipeline uniformly derusts spray-painting plant
CN110841828A (en) * 2019-11-26 2020-02-28 江国升 Steel pipe surface anticorrosive paint spraying process
CN111318404A (en) * 2020-05-07 2020-06-23 福州脉弧科技有限公司 Pipeline surface rust cleaning paint spraying apparatus

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10251825A (en) * 1997-03-12 1998-09-22 Kubota Corp Thermal spraying method for cast iron tube
CN1254808A (en) * 1998-11-25 2000-05-31 中国科学院金属腐蚀与防护研究所 Full-automatic internal and external coating method for epoxy resin jacketed underground pipeline and its production line
CN101602043A (en) * 2008-08-20 2009-12-16 上海建冶科技工程股份有限公司 Employing is melted the knot epoxy powder DN3600 buried steel pipe is carried out outer preserving method
CN104874514A (en) * 2015-06-08 2015-09-02 威海丰泰新材料科技股份有限公司 Roll spraying device
CN108296051A (en) * 2018-01-29 2018-07-20 周佳裕 A kind of Automobile shaft painting installation with drying polishing function
CN108816613A (en) * 2018-08-02 2018-11-16 何碧侠 A kind of pipeline uniformly derusts spray-painting plant
CN110841828A (en) * 2019-11-26 2020-02-28 江国升 Steel pipe surface anticorrosive paint spraying process
CN111318404A (en) * 2020-05-07 2020-06-23 福州脉弧科技有限公司 Pipeline surface rust cleaning paint spraying apparatus

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