CN115789393A - Pipeline repairing device and method in limited space - Google Patents

Abstract

The invention belongs to the technical field of pipeline repair, and particularly relates to a pipeline repair device and method in a limited space. The technical scheme is as follows: a pipeline repairing device in a limited space comprises a device main body, wherein a cleaning unit for cleaning a damaged surface of a pipeline, a polishing unit for polishing the damaged surface of the pipeline and a glue spraying unit for spraying curing glue to the damaged surface of the pipeline are respectively arranged on the device main body; the device comprises a device body and is characterized in that a support mechanism is installed at one end of the device body, a plurality of support plates are arranged around the outer ring of the output end of the support mechanism, and the support mechanism pushes the support plates to move outwards and finally enables the support plates to be spliced into a support ring for repairing the damaged surface of the pipeline. The invention provides a device and a method for repairing a pipeline in a limited space.

Description

Pipeline repairing device and method in limited space

Technical Field

The invention belongs to the technical field of pipeline repair, and particularly relates to a pipeline repair device and method in a limited space.

Background

Along with the rapid development of the urbanization process, chemical building material pipelines are also applied on a large scale. By 2015, nearly 50% of drainage pipelines in China adopt chemical building material pipelines. However, in the detection of the current chemical building material pipelines, the local structural damage of most chemical building material pipelines occurs to different degrees due to the fluctuation of the soil covering depth and the dynamic load. Common local structural damage of chemical building material pipelines is as follows: the pipeline top V type invades and pipeline bottom V type invades, and the overflow capacity of pipeline can all be greatly influenced to above two kinds of structural damage, produces major environmental negative influence problems such as sewage excessive.

Aiming at the problem of local structural damage of the chemical building material pipeline, the conventional treatment mode is an open-cut pipeline replacement technology. Such a method has a great influence on the surrounding environment and traffic. The internal repair technique comprises: hose inversion lining method, ultraviolet curing technology, etc., however, the replacement of the whole pipeline is costly and has long construction period. The repair technology for the local structural damage of the chemical building material pipeline is greatly concerned at home and abroad.

At present, the construction technology for repairing the local structural damage of the chemical building material pipeline mainly has the following problems: the open cut method can not carry out excavation operation in a limited space (such as pipeline replacement of a residential area and a narrow space); open cut methods are prone to damage to other underground pipelines. The hose turnover lining method, the ultraviolet curing technology and the like need to be replaced in whole sections, and the repair cost is higher; the hose overturning lining method and the ultraviolet curing technology cannot repair the serious V-shaped damaged pipe section; the hose inversion lining method and the ultraviolet curing technology are easy to destroy the chemical building material pipeline for the second time when cleaning the pipeline.

Disclosure of Invention

In order to solve the above problems in the prior art, the present invention provides a pipeline repairing device and method in a limited space.

The technical scheme adopted by the invention is as follows:

a pipeline repairing device in a limited space comprises a device main body, wherein a cleaning unit for cleaning a damaged surface of a pipeline, a polishing unit for polishing the damaged surface of the pipeline and a glue spraying unit for spraying curing glue to the damaged surface of the pipeline are respectively arranged on the device main body; the device is characterized in that an opening mechanism is installed at one end of the device main body, a plurality of supporting plates are arranged around the outer side of the output end of the opening mechanism, the opening mechanism pushes the supporting plates to move outwards, and finally the supporting plates are spliced into a supporting ring for repairing the damaged surface of the pipeline.

After the pipeline repairing device is moved to the pipeline damage position, the cleaning unit, the polishing unit and the glue spraying unit sequentially clean, polish and spray glue on the pipeline damage position. The support ring is then propped open and fixed to the damaged position of the pipeline by the propping mechanism, so that the damaged position of the pipeline is repaired.

The strutting mechanism can move the plurality of support plates in the contraction state to the damaged position of the pipeline, and can push the plurality of support plates to move outwards and finally splice into a complete circle of support rings, thereby ensuring that the support rings can be firmly fixed to the damaged position of the pipeline. The invention utilizes the support ring to reinforce the damaged position of the pipeline, has convenient operation and avoids the situation that the damaged pipe section needs to be replaced in the traditional pipeline repairing mode.

According to the preferable scheme of the invention, the cross sections of the support plates are circular arc-shaped, the support plates are divided into an outer support plate and an inner support plate, the outer support plate and the inner support plate are arranged at intervals, the inner side of the outer support plate is provided with a sliding groove, the outer side of the inner support plate is provided with a sliding rail, the sliding rail is sleeved in the sliding groove, the end parts of the sliding rail and the sliding groove are both wedge-shaped, and a telescopic connecting belt is connected between the adjacent outer support plates.

When the supporting plates are in a contraction state, the outer supporting plates are connected through the telescopic connecting belt, and the supporting plates are prevented from scattering. After the supporting plates move in place, the opening mechanism gradually pushes the inner supporting plate and the outer supporting plate outwards. As the diameter of the circle formed by the inner supporting plates and the outer supporting plates is gradually enlarged, the sliding rails on the inner supporting plates slide in the sliding grooves on the outer supporting plates. When the inner supporting plate moves to a position close to the end part of the outer supporting plate, the outer supporting plate is subjected to resistance of the inner wall of the pipeline, the wedge-shaped section of the sliding rail is in contact with the wedge-shaped section of the sliding groove, the inner supporting plate and the outer supporting plate slide to be mutually spliced along the inclined plane, and finally the supporting ring is formed.

As a preferable mode of the present invention, a self-locking mechanism is provided between the end of the outer support plate and the end of the inner support plate. After the support rings are formed by splicing the support plates, the adjacent support plates can be reliably connected by the self-locking mechanism, so that the adjacent support plates are prevented from being staggered.

As a preferable aspect of the present invention, the self-locking mechanism includes an engaging block connected to an end of the outer support plate and an engaging groove connected to an end of the inner support plate, and the engaging block engages with the engaging groove when the end of the outer support plate is engaged with the end of the inner support plate. The clamping block is clamped into the clamping groove, so that the adjacent supporting plates are reliably locked, and the condition that the adjacent supporting plates are staggered is avoided.

As a preferred scheme of the invention, the distraction mechanism comprises a position adjusting unit connected to the device main body, a driving motor is mounted at the output end of the position adjusting unit, a bidirectional screw rod is connected at the output end of the driving motor, a forward thread section of the bidirectional screw rod is in threaded connection with a first connecting block, and a reverse thread section of the bidirectional screw rod is in threaded connection with a second connecting block; the opening mechanism further comprises a plurality of push plates, the push plates are positioned on the inner sides of the support plates, a first connecting rod is hinged between each push plate and the corresponding first connecting block, and a second connecting rod is hinged between each push plate and the corresponding second connecting block; the telescopic inner pipe is fixed on the second connecting block, the telescopic outer pipe is fixed on the position adjusting unit, the telescopic outer pipe sleeve is arranged outside the telescopic inner pipe, the limiting block is arranged on the telescopic inner pipe, the limiting groove is formed in the telescopic outer pipe, and the limiting block sleeve is arranged in the limiting groove.

Because the limiting block on the telescopic inner pipe is sleeved in the limiting groove of the telescopic outer pipe, the telescopic inner pipe cannot rotate relative to the device main body, and therefore the first connecting block and the second connecting block which are in threaded connection on the bidirectional screw rod cannot rotate relative to the device main body. When the driving motor drives the bidirectional screw rod to rotate, the first connecting block connected to the forward thread section and the second connecting block connected to the reverse thread section move in opposite directions. Under the driving of the first connecting block and the second connecting block, the first connecting rod and the second connecting rod rotate towards the direction perpendicular to the bidirectional screw rod, so that the inner side supporting plates and the outer side supporting plates are pushed outwards by the push plates until the supporting rings are spliced. After the supporting ring is installed, the first connecting block and the second connecting block drive the first connecting rod and the second connecting rod to rotate in the direction parallel to the bidirectional screw rod, and the push plate is separated from the supporting plate, so that the repairing device can be conveniently withdrawn.

As a preferred scheme of the present invention, the position adjusting unit includes a lifting driving assembly installed in the device main body, an output end of the lifting driving assembly is connected with a lifting screw rod, the lifting screw rod is in threaded connection with a lifting connecting member, and a limiting plate for blocking the rotation of the lifting connecting member is arranged on the device main body; the output end of the lifting connecting piece is connected with a telescopic hydraulic rod, a driving motor is installed on a piston rod of the telescopic hydraulic rod, and one end of a telescopic outer tube is fixed on the lifting connecting piece.

The lifting driving assembly can drive the lifting screw rod to rotate, and the lifting screw rod drives the lifting connecting piece to lift under the condition that the limiting plate limits the rotation of the lifting connecting piece, so that the plurality of supporting plates integrally lift along with the lifting connecting piece, and the centers of the plurality of supporting plates are adjusted to the center of the pipeline. The flexible hydraulic stem can promote driving motor and remove to a plurality of backup pads can remove along the pipeline direction, thereby remove the pipeline damage with a plurality of backup pads accuracy.

As a preferable scheme of the invention, the cleaning unit comprises a cleaning solution storage tank and a polishing sand-blasting box which are arranged in a device main body, the cleaning solution storage tank is connected with a cleaning solution pressurizing tank, the cleaning solution pressurizing tank is connected with a flow controller, a section of pipeline is led out from an outlet of the flow controller and the polishing sand-blasting box and is converged into a mixing pipeline, a nozzle plate is rotatably connected to the device main body, a nozzle plate adjusting motor is installed on the device main body, an output end of the nozzle plate adjusting motor is connected with a rotating shaft of the nozzle plate, a distribution pipe is arranged on the nozzle plate, an inlet of the distribution pipe is connected with the mixing pipeline, and a plurality of nozzles are connected to the distribution pipe.

The cleaning liquid in the cleaning liquid pressurizing tank enters the pipeline through the flow controller, and the polishing sand in the polishing sand blasting box also enters the pipeline under the action of negative pressure in the pipeline. The sanding and the cleaning liquid are mixed in the mixing pipeline and then sent into the distribution pipe, and the mixture is sprayed out by a plurality of nozzles on the distribution pipe to clean the damaged part of the pipeline. The nozzle plate adjusting motor can drive the nozzle plate to rotate, so that the angles of the nozzles can be adjusted, and the nozzles can accurately spray cleaning liquid and frosted mixture to a damaged position.

According to the preferable scheme of the invention, the polishing unit comprises a storage tank arranged in the device main body, the edge of the storage tank is rotatably connected with a rotating hydraulic rod, a tilting motor is arranged on the storage tank, the output end of the tilting motor is connected with a rotating shaft of the rotating hydraulic rod, a piston rod of the rotating hydraulic rod is connected with a polishing motor, and the output end of the polishing motor is connected with a polishing piece.

The motor that verts can drive and rotate the hydraulic stem and rotate, when rotating the hydraulic stem and rotating in the hold up tank, the storage tank is interior to be retrieved to the piece of polishing. After the tilting motor drives the rotating hydraulic rod to rotate to the outside of the storage tank, the piston rod of the rotating hydraulic rod pushes the polishing part and the polishing motor outwards until the polishing part contacts with the damaged part of the pipeline. And starting the polishing motor, driving the polishing piece to rotate by the polishing motor, and thus accurately polishing the damaged part of the pipeline by the polishing piece.

According to the preferable scheme of the invention, the glue spraying unit comprises a glue spraying groove arranged in the device main body, a plurality of pressure pumps are arranged in the glue spraying groove, the outlet of each pressure pump is connected with a glue spraying pipe, the other end of each glue spraying pipe is connected with a universal rotating head, and the other end of each universal rotating head is connected with a glue spraying nozzle. The curing glue in the glue spraying groove is pumped out by the pressure pump, the direction of the glue spraying nozzle is adjusted by the universal rotating head, and the curing glue is sprayed to the pipe section where the pipeline is damaged by the glue spraying nozzle. After the curing glue is sprayed, the support ring can be reliably connected with the pipe section at the damaged position, so that the pipeline is well repaired.

A method for repairing a pipeline in a limited space comprises the following steps:

monitoring and positioning the damaged surface of the pipeline by using a monitor;

the cleaning unit cleans the damaged surface of the pipeline;

the grinding unit is used for grinding a damaged surface of the pipeline;

the glue spraying unit sprays curing glue on the damaged surface of the pipeline;

the supporting mechanism pushes the supporting plates outwards, and finally the supporting plates are spliced into a supporting ring;

the opening mechanism is retracted;

the dredging mechanism is used for dredging sundries;

the repair device is withdrawn from the working pipeline.

The invention has the beneficial effects that:

the opening mechanism can move the plurality of support plates in a contraction state to the damaged position of the pipeline, and can push the plurality of support plates to move outwards and finally splice into a whole-circle support ring, so that the support ring can be firmly fixed to the damaged position of the pipeline. The invention utilizes the support ring to reinforce the damaged position of the pipeline, has more convenient operation and avoids the situation that the damaged pipeline section needs to be replaced in the traditional pipeline repairing mode.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the expanding mechanism and a plurality of support plates;

FIG. 3 is a schematic view of the distractor mechanism;

FIG. 4 is a schematic view of a plurality of support plates;

FIG. 5 is a schematic view of the inner support plate and the outer support plate in a first orientation;

FIG. 6 is an enlarged view of a portion of FIG. 5 at A;

FIG. 7 is a schematic view of the inner support plate and the outer support plate in a second orientation;

fig. 8 is a partial enlarged view at B in fig. 7;

FIG. 9 is a schematic structural view of a self-locking mechanism on a portion of an outer support plate;

FIG. 10 is a schematic structural view of a self-locking mechanism on a portion of an inner-layer supporting plate;

FIG. 11 is a schematic view showing the construction of the outer telescopic tube and the inner telescopic tube;

FIG. 12 is a schematic structural view of a position adjusting unit and a bidirectional screw;

fig. 13 is a schematic structural view of a position adjusting unit;

fig. 14 is a schematic structural view of the steering unit;

FIG. 15 is a schematic structural view of the power unit;

FIG. 16 is a schematic view of the cleaning unit, the polishing unit and the glue spraying unit in a first direction;

FIG. 17 is a schematic view of the cleaning unit, the polishing unit and the glue spraying unit in a second direction;

FIG. 18 is a partial block diagram of the cleaning unit;

fig. 19 is a schematic structural view of the dredging mechanism.

In the figure: 1-a device body; 2-a cleaning unit; 3-a polishing unit; 4-glue spraying unit; 5-a distraction mechanism; 6-support ring; 7-a position adjustment unit; 8-a dredging mechanism; 11-a limiting plate; 12-a support column; 13-an electronic control box; 14-rear wheel; 15-a support floor; 16-a power unit; 17-a steering unit; 18-a front wheel; 19-a battery module; 21-cleaning liquid storage tank; 22-grinding the sand blasting box; 23-a cleaning solution pressurization tank; 24-a flow controller; 25-a mixing line; 26-a nozzle plate; 27-nozzle plate adjustment motor; 28-distribution pipes; 29-a nozzle; 31-a storage tank; 32-rotating the hydraulic rod; 33-a tilt motor; 34-grinding the motor; 35-grinding; 41-glue spraying groove; 42-a pressure pump; 43-glue spraying tube; 44-universal swivel head; 45-glue spraying nozzle; 46-a stirring motor; 47-a stirrer; 51-a drive motor; 52-a bidirectional lead screw; 53-first connection block; 54-a second connection block; 55-push plate; 56-a first link; 57-a second link; 58-telescopic inner tube; 59-telescoping outer tubes; 61-outer support plate; 62-inner layer support plate; 63-a self-locking mechanism; 71-a lift drive assembly; 72-lifting screw rod; 73-lifting connectors; 74-telescopic hydraulic rod; 81-first connecting rod; 82-a second connecting rod; 83-third connecting rod; 84-a bucket; 85-a first electrically controlled hydraulic rod; 86-a second electrically controlled hydraulic lever; 121-a monitor; 131-an illuminating lamp; 161-power motor; 162-a flexible power plant; 171-steering hydraulic rod; 172-a steering rod; 173-supporting spring elements; 521-a locking cap; 551-fixing part; 561-sliding groove; 571-sliding block; 581-a limiting block; 591-a limiting groove; 611-a chute; 612-a stretchable connecting band; 621-a slide rail; 631-a snap-fit block; 632-a clamping groove; 633-first fixed axle; 634-a return spring; 635-a second fixed shaft; 711-a lifting motor; 712-drive bevel gear; 713-driven bevel gear; 6311-rotating ring; 6312-semicircular ring; 6313-engaging piece; 6321-fixed ring; 6322-semicircular groove.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, 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 some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention. It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.

As shown in fig. 1 to 3, the pipeline repairing device in a limited space of the present embodiment includes a device main body 1, wherein the device main body 1 is respectively provided with a cleaning unit 2 for cleaning a damaged surface of a pipeline, a polishing unit 3 for polishing the damaged surface of the pipeline, and a glue spraying unit 4 for spraying a curing glue to the damaged surface of the pipeline; the device comprises a device body 1 and is characterized in that an opening mechanism 5 is installed at one end of the device body 1, a plurality of supporting plates are arranged around the outer circumference of the output end of the opening mechanism 5, the opening mechanism 5 pushes the supporting plates to move outwards, and finally the supporting plates are spliced into a supporting ring 6 for repairing the damaged surface of the pipeline.

After the pipeline repairing device is moved to the damaged position of the pipeline, the cleaning unit 2, the polishing unit 3 and the glue spraying unit 4 sequentially clean, polish and spray glue on the damaged position of the pipeline. The support ring 6 is then spread and fixed to the damaged position of the pipeline by the spreading mechanism 5, so that the damaged position of the pipeline is repaired.

The expanding mechanism 5 can move the support plates in the contraction state to the damaged position of the pipeline, and can push the support plates to move outwards and finally splice the support plates into a whole circle support ring 6, so that the support ring 6 can be firmly fixed to the damaged position of the pipeline. The invention utilizes the support ring 6 to reinforce the damaged part of the pipeline, has convenient operation and avoids the situation that the damaged pipe section needs to be replaced in the traditional pipeline repairing mode.

As shown in fig. 4 to 8, the cross-sectional shapes of the support plates are circular arc, the support plates in this embodiment include four outer support plates 61 and four inner support plates 62, the outer support plates 61 and the inner support plates 62 are arranged at an interval, three sliding grooves 611 are arranged on the inner sides of the outer support plates 61, three sliding rails 621 are arranged on the outer sides of the inner support plates 62, the sliding rails 621 are sleeved in the sliding grooves 611, the end portions of the sliding rails 621 and the sliding grooves 611 are both wedge-shaped, and a telescopic connecting belt 612 is connected between the adjacent outer support plates 61.

When the support plates are in a contracted state, the outer support plates 61 are connected by the telescopic connecting band 612, so that the support plates are prevented from scattering. After the support plates are moved in place, the spreader mechanism 5 gradually pushes the inner support plate 62 and the outer support plate 61 outward. Since the diameter of the circle formed by the inner support plates 62 and the outer support plates 61 is gradually enlarged, the slide rails 621 of the inner support plates 62 slide in the slide grooves 611 of the outer support plates 61. When the inner support plate 62 moves to near the end of the outer support plate 61, the outer support plate 61 is subjected to the resistance of the inner wall of the pipe, and the wedge-shaped section of the slide rail 621 contacts with the wedge-shaped section of the slide groove 611, so that the inner support plate 62 has a sliding component relative to the outer support plate 61, and the inner support plate 62 and the outer support plate 61 slide to be mutually spliced along the inclined surface, and finally the support ring 6 is formed.

If the outer support plate 61 is pressed against the inner wall of the pipeline, the wedge-shaped section of the slide rail 621 of the inner support plate 62 has not moved to the wedge-shaped section of the slide rail 621 of the outer support plate 61, the push plate 55 cannot continuously push the inner support plate 62 to slide relative to the outer support plate 61, and the inner support plate 62 is pressed against the outer support plate 61. In order to avoid the above situation, before the support rings 6 can be installed again, the center of the inner support ring 6 is aligned with the symmetric center line of two adjacent outer support rings 6, and then when the outer support plate 61 is close to the inner wall of the pipe, the wedge-shaped section of the slide rail 621 of the inner support plate 62 can slide to the wedge-shaped section of the slide groove 611 of the outer support plate 61.

Alternatively, both the slide rail 621 and the slide groove 611 are provided in a form of being gradually lowered from the central line to both sides. Therefore, when the push plate 55 pushes the inner support plate 62 outwards, the inner support plate 62 always has a sliding component relative to the outer support plate 61, so that the inner support plate 62 and the outer support plate 61 are accurately spliced. In order to increase the inclination angle of the wedge-shaped sections of the slide rail 621 and the slide groove 611, the number of the outer support plate 61 and the inner support plate can be increased, and the width of the single outer support plate 61 and the single inner support plate 62 can be shortened accordingly.

Further, as shown in fig. 4 to 10, a self-locking mechanism 63 is provided between the end of the outer support plate 61 and the end of the inner support plate 62. After the support rings 6 are formed by splicing the support plates, the self-locking mechanism 63 can reliably connect the adjacent support plates, so that the adjacent support plates are prevented from being staggered. The self-locking mechanism 63 comprises an engaging block 631 connected to the end of the outer support plate 61 and an engaging groove 632 connected to the end of the inner support plate 62, wherein the engaging block 631 is engaged with the engaging groove 632 when the end of the outer support plate 61 is engaged with the end of the inner support plate 62. The engaging block 631 is engaged into the engaging groove 632, so that the adjacent supporting plates are reliably locked, and the adjacent supporting plates are prevented from being staggered.

In this embodiment, an open slot is formed at an end of the outer supporting plate 61, a first fixing shaft 633 is disposed in the open slot, and the first fixing shaft 633 is connected to the engaging block 631 through a bearing. The engaging block 631 comprises a rotating ring 6311 mounted on the bearing, a semicircular ring 6312 is disposed on the rotating ring 6311, an engaging piece 6313 is disposed at one end of the semicircular ring 6312, and a return spring 634 is connected between the semicircular ring 6312 and the inner side of the opening groove. The end of the inner supporting plate 62 is also provided with an open slot, a second fixing shaft 635 is arranged in the open slot, and the second fixing shaft 635 is fixedly connected with a clamping slot 632. The engaging groove 632 includes a fixing ring 6321, the fixing ring 6321 is sleeved on and fixed to the second fixing shaft 635, and the fixing ring 6321 is fixed with a semi-circular groove 6322.

When the inner support plate 62 and the outer support plate 61 are not spliced, the clamping piece 6313 extends out of the open slot, and the end part of the clamping piece 6313 faces the semicircular slot 6322 on the inner support plate 62; one end of the semicircular groove 6322 extends out of the open slot, and the opening of the semicircular groove 6322 extending out of the open slot faces the engaging piece 6313 on the outer supporting plate 61. In the process of splicing the inner supporting plate 62 and the outer supporting plate 61, the clamping piece 6313 is inserted into one end opening of the semicircular groove 6322. Since the engaging block 631 can rotate relative to the first fixing shaft 633, the engaging block 631 can tilt at a certain angle, so as to ensure that the inner support plate 62 and the outer support plate 61 can be smoothly assembled. Since the cross section of the engaging piece 6313 is a straight line, and the cross section of the semicircular groove 6322 is an arc, the gap between the engaging piece 6313 and the semicircular groove 6322 is gradually reduced during the engaging process, so as to ensure reliable engaging. After the inner support plate 62 is assembled with the outer support plate 61, the engaging block 631 tends to return to the original position under the pulling of the return spring 634, thereby further ensuring that the engaging block 631 and the engaging groove 632 are reliably clamped.

The arc-shaped end face of the supporting plate is an inclined plane, after the supporting ring 6 is installed, the inner wall of the supporting ring 6 and the inner wall of the pipeline are in transition through the inclined plane, and the overflowing capacity of the repaired pipe section is effectively guaranteed.

Specifically, as shown in fig. 2, 3 and 11, the distraction mechanism 5 includes a position adjustment unit 7 connected to the device main body 1, an output end of the position adjustment unit 7 is provided with a driving motor 51, an output end of the driving motor 51 is connected with a bidirectional screw 52, a forward thread section of the bidirectional screw 52 is in threaded connection with a first connecting block 53, and a reverse thread section of the bidirectional screw 52 is in threaded connection with a second connecting block 54; the opening mechanism 5 further comprises four push plates 55, the push plates 55 are located on the inner side of the supporting plate, a first connecting rod 56 is hinged between the push plates 55 and the first connecting block 53, and a second connecting rod 57 is hinged between the push plates 55 and the second connecting block 54. A telescopic inner tube 58 is fixed on the second connecting block 54, a telescopic outer tube 59 is fixed on the position adjusting unit 7, the telescopic outer tube 59 is sleeved outside the telescopic inner tube 58, a limiting block 581 is arranged on the telescopic inner tube 58, a limiting groove 591 is arranged in the telescopic outer tube 59, and the limiting block 581 is sleeved in the limiting groove 591.

Since the limit block 581 of the inner telescopic tube 58 is disposed in the limit groove 591 of the outer telescopic tube 59, the inner telescopic tube 58 will not rotate relative to the device body 1, and the first connecting block 53 and the second connecting block 54 screwed to the two-way screw 52 will not rotate relative to the device body 1. When the driving motor 51 drives the bidirectional screw rod 52 to rotate, the first connecting block 53 connected to the forward thread section and the second connecting block 54 connected to the reverse thread section move in opposite directions. Under the driving of the first connecting block 53 and the second connecting block 54, the first connecting rod 56 and the second connecting rod 57 rotate in the direction perpendicular to the bidirectional screw 52, so that the plurality of inner supporting plates and outer supporting plates 61 are pushed outward by the push plate 55 until the support ring 6 is assembled. After the support ring 6 is installed, the first connecting block 53 and the second connecting block 54 drive the first connecting rod 56 and the second connecting rod 57 to rotate in the direction parallel to the bidirectional screw rod 52, and the push plate 55 is separated from the support plate, so that the repairing device can be conveniently withdrawn.

The push plate 55 houses a heating device and a pressure sensor. The heating device heats the support ring 6, and the stability of the support ring 6 after installation is ensured. The pressure sensor can detect the pressure on the push plate 55 in real time, and the push plate 55 is prevented from being damaged due to overlarge pressure.

As shown in fig. 2 and 3, the first link 56 and the second link 57 are disposed in a crossed manner, a sliding groove 561 is disposed at a middle section of the first link 56, a sliding block 571 is fixed at a middle section of the second link 57, and the sliding block 571 is sleeved in the sliding groove 561. The inner wall of the push plate 55 is provided with a fixing member 551, and the first link 56 and the second link 57 are both hinged on the fixing member 551. A locking cap 521 is fixed at one end of the bidirectional screw rod 52 far away from the driving motor 51 to prevent the first connecting block 53 from being separated from the bidirectional screw rod 52. When the driving motor 51 drives the first connecting block 53 and the second connecting block 54 to approach each other, the first connecting rod 56 and the second connecting rod 57 push the push plate 55 outward, and the inner supporting plate 62 and the outer supporting plate 61 are spliced together. When the support ring 6 is installed, the driving motor 51 rotates in the reverse direction to drive the first connecting block 53 and the second connecting block 54 to depart from each other, and then the push plate 55 is retracted by the first connecting rod 56 and the second connecting rod 57, so that the device can be conveniently moved out of the pipeline.

As shown in fig. 12 and 13, the position adjusting unit 7 includes a lifting driving assembly 71 installed in the apparatus main body 1, an output end of the lifting driving assembly 71 is connected with a lifting screw 72, the lifting screw 72 is connected with a lifting connecting member 73 in a threaded manner, and a limiting plate 11 for blocking the rotation of the lifting connecting member 73 is arranged on the apparatus main body 1; the output end of the lifting connecting piece 73 is connected with a telescopic hydraulic rod 74, the driving motor 51 is installed on the piston rod of the telescopic hydraulic rod 74, and one end of the telescopic outer tube 59 is fixed on the lifting connecting piece 73.

The lifting driving assembly 71 can drive the lifting screw rod 72 to rotate, and under the condition that the limiting plate 11 limits the rotation of the lifting connecting piece 73, the lifting screw rod 72 drives the lifting connecting piece 73 to lift, so that the plurality of supporting plates integrally lift along with the lifting connecting piece 73, and the centers of the plurality of supporting plates are adjusted to the center of the pipeline. The telescopic hydraulic rod 74 can push the driving motor 51 to move, so that the plurality of support plates can move along the direction of the pipeline, thereby accurately moving the plurality of support plates to the damaged pipeline.

The lifting driving assembly 71 comprises a lifting motor 711, the lifting motor 711 is installed in the device body 1, the output end of the lifting motor 711 is connected with a driving bevel gear 712, the driving bevel gear 712 is engaged with a driven bevel gear 713, the driven bevel gear 713 is installed in the device body 1, and the lifting screw 72 is fixed on the driven bevel gear 713.

As shown in fig. 12 and 13, a supporting column 12 is provided on the device body 1, a limiting plate 11 is provided on the supporting column 12, the upper end of the elevating screw is connected to the supporting column 12 through a bearing, and two monitors 121 are installed on the top of the supporting column 12. While moving the device, the monitor 121 may observe whether the device is moving in place. An electric control box 13 is installed at the lower end of the support column 12, and an illuminating lamp 131 is installed on the electric control box 13.

As shown in fig. 1, 14, 15, and 19, a rear wheel 14 is rotatably connected to the rear end of the apparatus body 1. A support base plate 15 is fixed to the front end of the apparatus body 1, and a power unit 16 and a steering unit 17 are mounted on the support base plate 15, respectively. The power unit 16 comprises a power motor 161 mounted on the support base plate 15, an output end of the power motor 161 is connected with a flexible power device 162, and the other end of the flexible power device 162 is provided with the front wheel 18. Wherein the flexible power device 162 may be a cardan shaft. The steering unit 17 comprises a steering hydraulic rod 171 arranged on the supporting base plate 15, a steering rod 172 is connected to a piston rod of the steering hydraulic rod 171, the other end of the steering rod 172 is connected with the front wheel 18, and a supporting spring 173 is connected between the supporting base plate 15 and the supporting column 12. The piston rod of the steering hydraulic rod 171 can push the front wheel 18 to steer, and the shape of the flexible power device 162 is correspondingly adjusted after the front wheel 18 is steered, so that the front wheel 18 can smoothly move after being steered.

Fig. 16 to 18 are schematic structural diagrams of the cleaning unit 2, the polishing unit 3 and the glue spraying unit 4.

The cleaning unit 2 comprises a cleaning liquid storage tank 21 and a grinding sand-blasting box 22 which are arranged on the device main body 1, the cleaning liquid storage tank 21 is connected with a cleaning liquid pressurizing tank 23, a flow controller 24 is connected onto the cleaning liquid pressurizing tank 23, a section of pipeline is led out from an outlet of the flow controller 24 and the grinding sand-blasting box 22 and is converged into a mixing pipeline 25, the device main body 1 is rotatably connected with a nozzle plate 26, a nozzle plate adjusting motor 27 is installed on the device main body 1, an output end of the nozzle plate adjusting motor 27 is connected with a rotating shaft of the nozzle plate 26, a distribution pipe 28 is arranged on the nozzle plate 26, an inlet of the distribution pipe 28 is connected with the mixing pipeline 25, and the distribution pipe 28 is connected with a plurality of nozzles 29. The nozzle plate 26 is provided on the side surface of the apparatus main body 1, and facilitates cleaning of a damaged portion. The flow controller 24 is connected to a pressure detecting device for detecting the pressure of the cleaning liquid.

The cleaning liquid in the cleaning liquid pressurizing tank 23 enters a pipeline through the flow controller 24, and under the action of negative pressure in the pipeline, the sanding sand in the sanding box 22 also enters the pipeline. The sanding and the cleaning liquid are mixed in the mixing pipeline 25 and then sent to the distribution pipe 28, and are sprayed out from a plurality of nozzles 29 on the distribution pipe 28 to clean the damaged part of the pipeline. The nozzle plate adjusting motor 27 can drive the nozzle plate 26 to rotate, so that the angle of the plurality of nozzles 29 can be adjusted, and the plurality of nozzles 29 can accurately spray the cleaning liquid and the frosted mixture to the damaged position.

Wherein, polishing unit 3 is including setting up in the hold up tank 31 of device main part 1, and the edge rotation of hold up tank 31 is connected with the rotation hydraulic stem 32, installs the motor 33 that verts on the hold up tank 31, and the output that verts the motor 33 is connected with the pivot that rotates hydraulic stem 32, is connected with polishing motor 34 on the piston rod of rotation hydraulic stem 32, and polishing motor 34's output is connected with the piece 35 of polishing. In this embodiment, the polishing member 35 is a polishing wheel, one end of the polishing wheel is connected to the polishing motor 34, and the other end of the polishing motor 34 and one end of the polishing wheel far away from the polishing motor 34 are both connected to a rotating hydraulic rod 32. A set of grinding wheels is disposed on both sides of the storage tank 31.

The tilting motor 33 can drive the rotary hydraulic rod 32 to rotate, and when the rotary hydraulic rod 32 rotates into the storage tank 31, the grinding member 35 can be retracted into the storage tank 31 to be stored. After the tilting motor 33 drives the rotary hydraulic rod 32 to rotate to the outside of the storage tank 31, the piston rod of the rotary hydraulic rod 32 pushes the grinding piece 35 and the grinding motor 34 outwards until the grinding piece 35 contacts the damaged part of the pipeline. And starting the grinding motor 34 again, wherein the grinding motor 34 drives the grinding piece 35 to rotate, so that the grinding piece 35 can accurately grind the damaged position of the pipeline.

Wherein, spout gluey unit 4 and respectively install three force (forcing) pump 42 including setting up in the gluey groove 41 of spouting of device main part 1, spout the both sides in gluey groove 41, the exit linkage of force (forcing) pump 42 has a glue spraying pipe 43, and the other end of spraying pipe 43 is connected with universal rotating head 44, and universal rotating head 44's the other end is connected with spouts gluey mouth 45. The pressure pump 42 pumps out the cured adhesive in the adhesive spraying groove 41, the universal rotating head 44 adjusts the direction of the adhesive spraying nozzle 45, and the adhesive spraying nozzle 45 sprays the cured adhesive to the pipe section where the pipeline is damaged. After the curing glue is sprayed, the support ring 6 can be reliably connected with the pipe section at the damaged position, so that the pipeline is well repaired. And a stirring motor 46 is also arranged in the glue spraying groove 41, and the output end of the stirring motor 46 is connected with a stirrer 47. The stirring motor 46 drives the stirrer 47 to rotate, and stirs the curing adhesive in the adhesive spraying tank 41.

Further, as shown in fig. 19, the present invention further includes a dredging mechanism 8, the dredging mechanism 8 includes a first connecting rod 81 hinged to the apparatus body 1, a second connecting rod 82 is hinged to a middle section of the first connecting rod 81, the other end of the second connecting rod 82 is hinged to a third connecting rod 83, and a bucket 84 is connected between the first connecting rod 81 and the third connecting rod 83; a first electric control hydraulic rod 85 is hinged between the first connecting rod 81 and the device body 1, and a second electric control hydraulic rod 86 is hinged between the second connecting rod 82 and the device body 1. The first electrically controlled hydraulic rod 85 drives the second connecting rod 82 to rotate, the second electrically controlled hydraulic rod 86 drives the first connecting rod 81 to rotate, and then the bucket 84 can tilt or lift, so that residual sundries after the pipeline is repaired can be removed.

As shown in fig. 19, a battery module 19 is further provided in the device main body 1, and power is supplied to the device through the battery module 19. The repairing device further comprises a control console, wherein the control console can monitor the pressure of the push plate 55 and the pressure of the cleaning liquid, and can monitor the operation space through a video to control the cleaning unit 2, the polishing unit 3, the glue spraying unit 4, the standby power system and the spreading mechanism 5 to act.

The method for repairing the pipeline in the limited space comprises the following steps:

s1: the monitor 121 monitors and positions the damaged surface of the pipeline;

s2: the cleaning unit 2 cleans the damaged surface of the pipeline;

s3: the polishing unit 3 polishes a damaged surface of the pipeline;

s4: the glue spraying unit 4 sprays curing glue on the damaged surface of the pipeline;

s5: the position adjusting unit 7 adjusts the support plates to the damaged pipe sections, and the centers of the support plates are aligned with the center of the pipeline;

s6: the opening mechanism 5 pushes the inner support plate 62 and the outer support plate 61 outwards, so that the outer support plate 61 and the inner support plate 62 are spliced into the support ring 6;

s7: the support ring 6 is heated by a heater in the push plate 55;

s8: the opening mechanism 5 is retracted;

s9: the dredging mechanism 8 is used for dredging sundries;

s10: the repair device is withdrawn from the working pipeline.

According to the invention, by introducing the in-situ supporting system (the supporting ring 6 and the strutting mechanism 5), the in-situ fine control of the structural damage repair construction process of the chemical building material pipeline is realized, and the structural strength of the repaired chemical building material pipeline is improved. The arc-shaped end face of the support ring 6 is an inclined plane, so that the overflowing capacity of the repaired pipe section is effectively ensured. According to the invention, by introducing the cleaning solution and the sand blasting cleaning system (cleaning unit 2), the deep cleaning of the structural damage surface of the chemical building material pipeline is realized, and the subsequent supporting and bonding processes are facilitated. The pressure monitoring system monitors the pressure in the supporting construction process, realizes intelligent monitoring of the whole construction process, and improves the construction safety. Based on the theory of assembled, 6 key spare parts of support ring can the normal position equipment concatenation, change in real time according to the pipe diameter difference, have further realized the operation demand in not limiting the space. The invention can realize the efficient and economic treatment of the damaged surface of the small pipeline structure, and effectively saves the construction time and cost for the structural damage of the chemical building material pipeline.

The invention realizes the in-situ accurate control of the working surface. The invention introduces a key technical system to realize the aim of green construction on a construction site. The invention realizes the intelligent monitoring of the whole construction process and improves the construction safety. The support ring and the strutting mechanism are designed based on an assembly concept, specialized equipment can be customized according to different diameters of pipelines, the support ring and the strutting mechanism have the capabilities of standardized design, factory production, assembly construction, informatization management, intelligent application and the like, and the repair cost of chemical building material pipelines is greatly reduced.

The present invention is not limited to the above-mentioned alternative embodiments, and any other various products can be obtained by anyone in the light of the present invention, but any changes in the shape or structure thereof, all of which fall within the scope of the present invention, fall within the protection scope of the present invention.

Claims (10)

1. A pipeline prosthetic devices under finite space, its characterized in that: the device comprises a device main body (1), wherein a cleaning unit (2) for cleaning a damaged surface of the pipeline, a polishing unit (3) for polishing the damaged surface of the pipeline and a glue spraying unit (4) for spraying curing glue on the damaged surface of the pipeline are respectively arranged on the device main body (1); the device is characterized in that a propping mechanism (5) is installed at one end of the device main body (1), a plurality of supporting plates are arranged around the outer circumference of the output end of the propping mechanism (5), and the propping mechanism (5) pushes the supporting plates to move outwards and finally enables the supporting plates to be spliced into a supporting ring (6) for repairing the damaged surface of the pipeline.

2. The pipeline rehabilitation device for limited space according to claim 1, wherein: the cross-sectional shape of a plurality of backup pads is arc, a plurality of backup pads divide into outer backup pad (61) and inlayer backup pad (62), outer backup pad (61) and inlayer backup pad (62) interval set up, outer backup pad (61) inboard is provided with spout (611), the outside of inlayer backup pad (62) is provided with slide rail (621), slide rail (621) cover is located in spout (611), the tip shape of slide rail (621) and spout (611) is the wedge, be connected with flexible connecting band (612) between adjacent outer backup pad (61).

3. The pipeline rehabilitation device for limited space according to claim 1, wherein: and a self-locking mechanism (63) is arranged between the end part of the outer layer supporting plate (61) and the end part of the inner layer supporting plate (62).

4. The pipeline rehabilitation device under limited space of claim 3, wherein: the self-locking mechanism (63) comprises a clamping block (631) connected to the end part of the outer supporting plate (61) and a clamping groove (632) connected to the end part of the inner supporting plate (62), and the clamping block (631) is clamped with the clamping groove (632) when the end part of the outer supporting plate (61) is spliced with the end part of the inner supporting plate (62).

5. The pipeline rehabilitation device for limited space according to claim 1, wherein: the opening mechanism (5) comprises a position adjusting unit (7) connected to the device main body (1), a driving motor (51) is installed at the output end of the position adjusting unit (7), the output end of the driving motor (51) is connected with a bidirectional screw rod (52), a forward thread section of the bidirectional screw rod (52) is in threaded connection with a first connecting block (53), and a reverse thread section of the bidirectional screw rod (52) is in threaded connection with a second connecting block (54); the opening mechanism (5) further comprises a plurality of push plates (55), the push plates (55) are positioned on the inner sides of the supporting plates, a first connecting rod (56) is hinged between each push plate (55) and the first connecting block (53), and a second connecting rod (57) is hinged between each push plate (55) and the second connecting block (54); a telescopic inner tube (58) is fixed on the second connecting block (54), a telescopic outer tube (59) is fixed on the position adjusting unit (7), the telescopic inner tube (58) is sleeved with the telescopic outer tube (59), a limiting block (581) is arranged on the telescopic inner tube (58), a limiting groove (591) is arranged in the telescopic outer tube (59), and the limiting block (581) is sleeved in the limiting groove (591).

6. The pipeline rehabilitation device under limited space of claim 5, wherein: the position adjusting unit (7) comprises a lifting driving assembly (71) arranged in the device main body (1), the output end of the lifting driving assembly (71) is connected with a lifting screw rod (72), the lifting screw rod (72) is in threaded connection with a lifting connecting piece (73), and a limiting plate (11) used for blocking the rotation of the lifting connecting piece (73) is arranged on the device main body (1); the output end of the lifting connecting piece (73) is connected with a telescopic hydraulic rod (74), the driving motor (51) is installed on a piston rod of the telescopic hydraulic rod (74), and one end of the telescopic outer tube (59) is fixed on the lifting connecting piece (73).

7. The pipeline rehabilitation device under limited space of claim 1, wherein: cleaning unit (2) is including setting up in washing liquid hold up tank (21) and the sandblast box (22) of polishing of device main part (1), washing liquid hold up tank (21) are connected with washing liquid pressurization jar (23), be connected with flow controller (24) on washing liquid pressurization jar (23), one section pipeline is all drawn forth and is converged into mixing pipeline (25) with sandblast box (22) of polishing in the export of flow controller (24), it is connected with nozzle plate (26) to rotate on device main part (1), install nozzle plate adjustment motor (27) on device main part (1), the output of nozzle plate adjustment motor (27) is connected with the pivot of nozzle plate (26), be provided with distributing pipe (28) on nozzle plate (26), the import and the mixing pipeline (25) of distributing pipe (28) are connected, be connected with a plurality of nozzles (29) on distributing pipe (28).

8. The pipeline rehabilitation device under limited space of claim 1, wherein: polishing unit (3) is including setting up in hold up tank (31) of device main part (1), and the edge rotation of hold up tank (31) is connected with rotation hydraulic stem (32), installs tilting motor (33) on hold up tank (31), and tilting motor's (33) output is connected with the pivot of rotating hydraulic stem (32), is connected with grinding motor (34) on the piston rod of rotating hydraulic stem (32), and the output of grinding motor (34) is connected with and polishes piece (35).

9. The pipeline rehabilitation device for limited space according to claim 1, wherein: spout gluey unit (4) including setting up in spouting gluey groove (41) of device main part (1), spout and install a plurality of force (forcing) pumps (42) in gluey groove (41), the exit linkage of force (forcing) pump (42) has glue spraying pipe (43), and the other end of glue spraying pipe (43) is connected with universal rotating head (44), and the other end of universal rotating head (44) is connected with spouts gluey mouth (45).

10. A method of pipeline rehabilitation in confined spaces using the apparatus of claim 1, wherein: the method comprises the following steps:

the monitor (121) monitors and positions the damaged surface of the pipeline;

the cleaning unit (2) cleans the damaged surface of the pipeline;

the polishing unit (3) polishes a damaged surface of the pipeline;

the glue spraying unit (4) sprays curing glue on the damaged surface of the pipeline;

the support plates are pushed outwards by the expanding mechanism (5) and finally spliced into a support ring (6);

the expanding mechanism (5) is retracted;

the dredging mechanism (8) is used for dredging sundries;

the repair device is withdrawn from the working pipeline.

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