A pipeline cleaning device

Abstract

The present invention relates to the technical field of water conservancy engineering, and discloses a pipeline cleaning device, which includes two support chucks arranged front and back. A driving frame is provided on the front side of the two support chucks. The driving frame is fixed at the front end of the guiding support rod, and the guiding support rod is fixed on the rear support chuck; a scraping wall assembly is rotatably connected to the driving frame; a first driving mechanism for driving the driving frame to move forward and a second driving mechanism for driving the scraping wall assembly to rotate are provided on the front support chuck. By the two support chucks staggering back and forth and reciprocally supporting and cooperating with the first driving mechanism, the device can be driven to move forward section by section and clean section by section in the pipeline; by driving the arc-shaped scraper to perform a rapid circular motion through the second driving mechanism, while the rear support chuck drives the arc-shaped scraper to move forward, the arc-shaped scraper can perform scraping work on the inner wall of the pipeline, effectively scraping and cleaning the hardened sludge, thereby solving the problem of incomplete cleaning of the sludge on the inner wall of the pipeline.

Description

Technical Field

[0001] The present invention relates to the technical field of water conservancy projects, and particularly relates to a pipeline cleaning device. Background Art

[0002] In water conservancy projects, pipelines are the most commonly used components. Among them, sludge pipelines are mainly responsible for transporting sludge to achieve the construction purpose. However, during the period when the sludge pipeline is out of use, a certain amount of sludge still adheres to the inner wall of the pipeline. If it is not cleaned in time, after a long time, the sludge will caking and hardening, and thus adhere to the inner wall of the pipeline, affecting subsequent use. When cleaning the sewage pipeline, a large amount of high-pressure and high-speed flowing water is mostly used to clean impurities such as sludge and oil stains deposited in the sewage pipeline. This cleaning method not only wastes a large amount of water resources, but also the hardened sludge attached to the inner wall of the pipeline cannot be completely cleaned. Summary of the Invention

[0003] The purpose of the present invention is to provide a pipeline cleaning device. Through the front and back staggered and reciprocating support of two support chucks and the cooperation with the first driving mechanism, the device can be driven to move forward and clean section by section in the pipeline; through the second driving mechanism driving the arc-shaped scraper to perform a rapid circular motion, while the support chuck at the rear drives the arc-shaped scraper to move forward, the arc-shaped scraper can scrape the inner wall of the pipeline, effectively scraping and cleaning the hardened sludge, thus solving the problem of incomplete cleaning of the sludge on the inner wall of the pipeline.

[0004] The above technical purpose of the present invention is achieved through the following technical solutions:

[0005] A pipeline cleaning device includes two support chucks arranged front and back. A driving frame is provided on the front side of the two support chucks. The driving frame is fixed at the front ends of two parallel guide support rods. The guide support rods pass through the rear extending end of the front support chuck and are fixed on the rear support chuck.

[0006] A scraping wall assembly is rotatably connected to the driving frame.

[0007] The front support chuck is provided with a first driving mechanism for driving the driving frame to move forward and a second driving mechanism for driving the scraping wall assembly to rotate.

[0008] Through the above technical solutions, the device is placed into the pipeline to be cleaned, and then the front support chuck is clamped in the pipeline, thereby fixing the device in the pipeline; then the second driving mechanism drives the scraping wall assembly to rotate, and the scraping wall assembly scrapes the inner wall of the pipeline. While scraping, the first driving mechanism drives the driving frame to move forward, and the driving frame drives the scraping wall assembly to move forward, thereby performing the scraping work and scraping off the hardened sludge on the inner wall of the pipeline.

[0009] The present invention is further configured such that: the support chuck includes a support base and four support arms circumferentially and evenly distributed on the support base; a rounded rectangular cylinder hole with a lower opening is formed in the support base, and two rounded rectangular pistons matching therewith are sleeved in the rounded rectangular cylinder hole, and the two rounded rectangular pistons are respectively fixed on the cylinder body and the piston rod of the electric telescopic cylinder;

[0010] A rounded rectangular through hole communicating with the rounded rectangular cylinder hole is formed in each support arm, and an adjusting support rod is sleeved in each rounded rectangular through hole, and an arc plate is fixed to the outer end of the adjusting support rod;

[0011] The two upper rounded rectangular through holes are located at the upper ends of the upper rounded rectangular pistons, and the two lower rounded rectangular through holes are located below the lower rounded rectangular pistons. A baffle is fixedly sealed at the lower end of the rounded rectangular cylinder hole;

[0012] The upper hydraulic cavity enclosed by the upper rounded rectangular piston, the two upper rounded rectangular through holes, the two upper adjusting support rods and the rounded rectangular cylinder hole is filled with hydraulic oil;

[0013] The lower hydraulic cavity enclosed by the lower rounded rectangular piston, the two lower rounded rectangular through holes, the two lower adjusting support rods, the rounded rectangular cylinder hole and the baffle is also filled with hydraulic oil.

[0014] The electric telescopic cylinder is electrically connected to a mobile power source and a controller, and the mobile power source and the controller are fixed on the front support chuck.

[0015] Through the above technical solution, when it is necessary to clamp the support chuck in the pipeline, the controller controls the electric telescopic cylinder to expand and contract. The electric telescopic cylinder drives the two rounded rectangular pistons to move away from each other. The pistons move outwards to squeeze the hydraulic oil into the rounded rectangular through holes, thereby pushing the adjusting support rods to move outwards. The outward movement of the adjusting support rods drives the arc plates to move outwards, and the arc plates are pressed against the inner wall of the pipeline. Through the frictional force between the inner wall of the pipeline and the arc plates, the fixing work of the support chuck and the pipeline is completed.

[0016] The present invention is further configured such that: the rounded rectangular through hole is in the shape of a stepped through hole with a smaller outer diameter and a larger inner diameter;

[0017] The adjusting support rod includes a rounded rectangular rod inserted into the small end hole of the rounded rectangular through hole and a rounded rectangular column inserted into the large end hole of the rounded rectangular through hole. A screw rod is fixed to the outer end of the rounded rectangular column, and the screw rod is screwed into the threaded hole of the rounded rectangular rod; the arc plate is fixed to the outer end of the rounded rectangular rod.

[0018] Through the above technical solution, the round-corner rectangular rod is entirely pulled into the round-corner rectangular through-hole, and then the round-corner rectangular rod is rotated. The action of the screw can drive the round-corner rectangular rod to move inwards or outwards. After adjustment, the round-corner rectangular rod is inserted into the round-corner rectangular through-hole again, so that the outward movement amplitude of the arc plate can be adjusted, and thus pipes with more inner diameters can be adapted.

[0019] The present invention is further configured as: the guiding support rod is inserted into the linear bearing, and the linear bearing is inserted into and fixed on the support seat of the front support chuck;

[0020] The two guiding support rods are located between the two round-corner rectangular pistons of the front support chuck.

[0021] Through the above technical solution, the frictional resistance between the guiding support rod and the front support chuck can be reduced.

[0022] The present invention is further configured as: the pipe scraping assembly includes a rectangular sleeve, two rectangular guiding rods are sleeved in the rectangular sleeve, an arc-shaped scraping plate is fixed at the outer end of the rectangular guiding rod, and a plurality of scraping blades are formed on the outer wall of the arc-shaped scraping plate;

[0023] A rotating shaft is fixed in the middle of the rectangular sleeve, and the rotating shaft is rotatably connected to the driving frame through a bearing.

[0024] Through the above technical solution, the second driving mechanism drives the rotating shaft to rotate, the rotating shaft drives the rectangular sleeve to rotate, the rectangular sleeve drives the rectangular guiding rod to rotate. Under the action of centrifugal force, the rectangular guiding rod automatically moves outwards. The rectangular guiding rod drives the rectangular scraping plate to move outwards, and the rectangular pipe scraping plate presses against the inner wall of the pipe and rotates along the inner wall of the pipe, and the scraping blades clean the inner wall of the pipe.

[0025] The present invention is further configured as: the second driving mechanism includes a large sprocket fixed at the rear end of the rotating shaft. The large sprocket is connected to a small sprocket through a chain. The small sprocket is fixed at the front end of the splined long shaft. The two ends of the splined long shaft are respectively rotatably connected to the rear support chuck and the driving frame through bearings;

[0026] The extending end of the splined long shaft passing through the front support chuck is connected to a large bevel gear through a spline. A small bevel gear is meshed with the upper end of the large bevel gear. The small bevel gear is fixed on the motor shaft of the second motor. The second motor is fixed on the limiting frame. The limiting frame is fixed on the front support chuck; the large bevel gear is movably clamped in the limiting groove of the limiting frame.

[0027] The second motor is electrically connected to the mobile power source and the controller fixed on the front support chuck.

[0028] Through the above technical solution, the controller controls the second motor to start. The second motor drives the small bevel gear to rotate, the small bevel gear drives the large bevel gear to rotate, the large bevel gear drives the spline long shaft to rotate through the spline, the spline long shaft drives the small sprocket to rotate, the small sprocket drives the large sprocket to rotate through the chain, and the large sprocket drives the rotating shaft to rotate, thereby driving the scraping wall assembly to rotate.

[0029] The present invention is further provided that: a jack is formed at the inner end of the rectangular guide rod;

[0030] The jack is sleeved on the small-diameter column body of the stepped column body, and a plurality of disc springs are clamped between the large-diameter column body of the stepped column body and the inner end of the rectangular guide rod; a waist-shaped hole is formed on the small-diameter column body of the stepped column body, a pin shaft is sleeved in the waist-shaped hole, and the pin shaft is inserted and fixed in the rectangular sleeve;

[0031] The inner end of the stepped column body is screwed on a corresponding adjusting screw rod, the two adjusting screw rods are coaxially fixed on the adjusting wheel, and the adjusting wheel is movably sleeved in the slot of the rectangular sleeve; one side of the adjusting wheel extends out of the rectangular sleeve;

[0032] The pitches of the two adjusting screw rods are equal but the thread helix directions are opposite.

[0033] Through the above technical solution, when the adjusting wheel is rotated, the adjusting wheel drives the two adjusting screw rods to rotate simultaneously. Since the thread helix directions of the two adjusting screw rods are opposite, the two stepped column bodies can be driven to approach or move away from each other. The stepped column body drives the rectangular guide rod to move outwards or inwards through the pin shaft, and the rectangular guide rod drives the arc-shaped scraper to move outwards or inwards, thereby adjusting the outward movement amplitude of the arc-shaped scraper, so as to be applicable to pipes with different inner diameters; when the arc-shaped scraper cleans the inner wall of the pipe, the arc-shaped scraper receives the reaction force of the pipe, and the disc spring always provides an outward supporting force for the rectangular guide rod, so that the arc-shaped scraper can always press against the inner wall of the pipe to ensure the effectiveness of the pipe cleaning work; at the same time, due to the action of the disc spring, the arc-shaped scraper can move inwards when receiving a large resistance, thereby preventing the arc-shaped scraper from being stuck.

[0034] The present invention is further provided that: a plurality of circumferentially evenly distributed threaded counterbores are formed on the outer wall of the adjusting wheel.

[0035] Through the above technical solution, an external screw rod is screwed into the threaded through hole or a smooth rod is inserted into the threaded counterbore, which can facilitate the rotation of the adjusting wheel, thereby facilitating the adjustment of the outward movement amplitude of the arc-shaped scraper.

[0036] The present invention is further provided that: the first driving mechanism includes a rack parallel to the guiding support rod. The two ends of the rack are respectively fixed on the driving frame and the rear support chuck, and the middle part of the rack is inserted into the front support chuck;

[0037] A third motor is fixed on the front side wall of the front support chuck, and a driving gear is fixed on the third motor. The driving gear meshes with a rack.

[0038] The third motor is electrically connected to a mobile power source and a controller fixed on the front support chuck.

[0039] Through the above technical solution, the controller controls the second motor to reverse, and the third motor drives the driving gear to rotate counterclockwise. At this time, the front support chuck is clamped in the pipeline, and the rear support chuck is not clamped with the pipeline. The driving gear drives the rack to move forward, and the rack drives the driving frame and the rear support chuck to move forward. The driving frame moves forward and performs scraping work on the pipeline forward through the scraping wall assembly;

[0040] When the two support chucks are close to a certain distance, the third motor stops rotating, and then the rear support chuck is clamped on the inner wall of the pipeline, and the front support chuck releases the clamping of the pipeline. The third motor rotates forward, and the third motor drives the driving gear to rotate clockwise. Since the rear support chuck is fixed and the rack does not move, the rack reacts on the driving gear, and the driving mass reacts on the front support chuck, thereby driving the front support chuck to move forward. After the front support chuck moves forward a certain distance; then the front support chuck is clamped in the pipeline, and the rear support chuck releases the clamping, and then the third motor rotates in reverse again, driving the rear support chuck and the driving frame to move forward again for scraping work.

[0041] Through the reciprocating support of the two support chucks staggered front and back and the cooperation with the first driving mechanism, the device can be driven to move forward section by section and be cleaned section by section in the pipeline; by driving the arc-shaped scraper to perform a rapid circular motion through the second driving mechanism, while the rear support chuck drives the arc-shaped scraper to move forward, the arc-shaped scraper can perform scraping work on the inner wall of the pipeline, effectively scraping and cleaning the hardened sludge, thus solving the problem of incomplete cleaning of the sludge on the inner wall of the pipeline. Brief Description of the Drawings

[0042] Figure 1 is a schematic structural diagram of the present invention;

[0043] Figure 2 is Figure 1 a sectional view taken along A-A;

[0044] Figure 3 is Figure 2 a sectional view taken along B-B;

[0045] Figure 4 is Figure 1 a partial enlarged view of C;

[0046] Figure 5 is Figure 2 a partial enlarged view of D;

[0047] Figure 6 is Figure 3 Partial enlarged view of E;

[0048] Figure 7 is Figure 3 Cross-sectional view along F-F;

[0049] Figure 8 is Figure 3 Partial enlarged view of G.

[0050] Reference numerals: 10, support chuck; 101, support base; 102, support arm; 103, rounded rectangular piston; 104, electric telescopic cylinder; 105, adjusting support rod; 106, arc plate; 107, baffle; 108, hydraulic oil;

[0051] 1011, rounded rectangular cylinder bore; 1021, rounded rectangular through hole;

[0052] 1001, upper hydraulic cavity; 1002, lower hydraulic cavity;

[0053] 1051, rounded rectangular rod; 1052, rounded rectangular column; 1053, screw; 1054, threaded hole;

[0054] 21, drive frame; 22, guiding support rod; 23, linear bearing;

[0055] 30, scraping wall assembly; 301, rectangular sleeve; 302, rectangular guiding rod; 3021, jack; 303, arc-shaped scraper; 304, scraping edge; 305, rotating shaft; 306, stepped cylinder; 3061, waist-shaped hole; 307, disc spring; 308, pin shaft; 309, adjusting screw; 310, adjusting wheel; 3011, slot; 3101, threaded counterbore;

[0056] 40, first driving mechanism; 401, rack; 402, third motor; 403, driving gear;

[0057] 50, second driving mechanism; 501, large sprocket; 502, chain; 503, small sprocket; 504, splined long shaft; 505, large bevel gear; 506, small bevel gear; 507, second motor; 508, limiting frame; 5081, limiting groove;

[0058] 90, pipeline. Detailed implementation manners

[0059] The following combines the accompanying drawings and embodiments to further describe in detail the detailed implementation manners of the present invention. The following embodiments are used to illustrate the present invention, but are not used to limit the scope of the present invention.

[0060] The following references Figures 1 to 8Description of the present invention:

[0061] A pipeline cleaning device includes two support chucks 10 arranged front and back. A driving frame 21 is provided on the front side of the two support chucks 10. The driving frame 21 is fixed to the front ends of two parallel guide support rods 22. The guide support rods 22 pass through the rear extending ends of the front support chuck 10 and are fixed to the rear support chuck 10.

[0062] A scraping wall assembly 30 is rotatably connected to the driving frame 21.

[0063] The front support chuck 10 is provided with a first driving mechanism 40 for driving the driving frame 21 to move forward and a second driving mechanism 50 for driving the scraping wall assembly 30 to rotate.

[0064] Put this device into the pipeline 90 to be cleaned, and then the front support chuck is clamped inside the pipeline, thereby fixing this device inside the pipeline. Then the second driving mechanism drives the scraping wall assembly to rotate, and the scraping wall assembly scrapes the inner wall of the pipeline. While scraping the wall, the first driving mechanism drives the driving frame to move forward, and the driving frame drives the scraping wall assembly to move forward, thereby performing the scraping work.

[0065] The support chuck 10 includes a support base 101 and four support arms 102 circumferentially distributed on the support base 101. A fillet rectangular cylinder hole 1011 with an open lower side is formed in the support base 101. Two fillet rectangular pistons 103 that match it are sleeved in the fillet rectangular cylinder hole 1011. The two fillet rectangular pistons 103 are respectively fixed to the cylinder body and the piston rod of the electric telescopic cylinder 104.

[0066] A fillet rectangular through hole 1021 communicating with the fillet rectangular cylinder hole 1011 is formed in the support arm 102. An adjusting support rod 105 is sleeved in each fillet rectangular through hole 1021. An arc plate 106 is fixed to the outer end of the adjusting support rod 105.

[0067] The two upper fillet rectangular through holes 1021 are located at the upper ends of the upper fillet rectangular pistons 103, and the two lower fillet rectangular through holes 1021 are located below the lower fillet rectangular pistons 103. A baffle 107 is hermetically fixed to the lower end of the fillet rectangular cylinder hole 1011.

[0068] The upper hydraulic cavity 1001 enclosed by the upper fillet rectangular piston 103, the two upper fillet rectangular through holes 1021, the two upper adjusting support rods 105 and the fillet rectangular cylinder hole 1011 is filled with hydraulic oil 108.

[0069] The lower hydraulic cavity 1002 enclosed by the rounded rectangle piston 103 on the lower side, the two rounded rectangle through holes 1021 on the lower side, the two adjusting support rods 105 on the lower side, the rounded rectangle cylinder hole 1011 and the baffle 107 is also filled with hydraulic oil 108.

[0070] The electric telescopic cylinder 104 is electrically connected to a mobile power source and a controller, and the mobile power source and the controller are fixedly arranged on the front support chuck 10.

[0071] When it is necessary to clamp the support chuck in the pipeline, the controller controls the electric telescopic cylinder to expand and contract. The electric telescopic cylinder drives the two rounded rectangle pistons to move away from each other. The outward movement of the pistons squeezes the hydraulic oil into the rounded rectangle through holes, thereby pushing the adjusting support rods to move outward. The outward movement of the adjusting support rods drives the arc plate to move outward, and the arc plate presses against the inner wall of the pipeline. Through the frictional force between the inner wall of the pipeline and the arc plate, the fixing work of the support chuck and the pipeline is completed.

[0072] The rounded rectangle through hole 1021 is in the shape of a stepped through hole with a smaller outer diameter and a larger inner diameter;

[0073] The adjusting support rod 105 includes a rounded rectangle rod 1051 inserted into the small end hole of the rounded rectangle through hole 1021 and a rounded rectangle column 1052 inserted into the large end hole of the rounded rectangle through hole 1021. A screw rod 1053 is fixedly arranged at the outer end of the rounded rectangle column 1052, and the screw rod 1053 is screwed into the threaded hole 1054 of the rounded rectangle rod 1051; the arc plate 106 is fixed at the outer end of the rounded rectangle rod 1051.

[0074] Pull the entire rounded rectangle rod into the rounded rectangle through hole, and then rotate the rounded rectangle rod. Through the action of the screw rod, the rounded rectangle rod can be driven to move inward or outward. After adjustment, insert the rounded rectangle rod into the rounded rectangle through hole again, so as to adjust the outward movement amplitude of the arc plate, and thus adapt to pipelines 90 with more inner diameters.

[0075] The guiding support rod 22 is inserted into the linear bearing 23, and the linear bearing 23 is inserted and fixed on the support seat 101 of the front support chuck 10;

[0076] The two guiding support rods 22 are located between the two rounded rectangle pistons 103 of the front support chuck 10.

[0077] The frictional resistance between the guiding support rod and the front support chuck can be reduced.

[0078] The wall scraping assembly 30 includes a rectangular sleeve 301. Two rectangular guiding rods 302 are sleeved in the rectangular sleeve 301. An arc-shaped scraping plate 303 is fixed at the outer end of the rectangular guiding rod 302, and a plurality of scraping blades 304 are formed on the outer wall of the arc-shaped scraping plate 303;

[0079] A rotating shaft 305 is fixed in the middle of the rectangular sleeve 301, and the rotating shaft 305 is rotatably connected to the driving frame 21 through a bearing.

[0080] The second driving mechanism 50 drives the rotating shaft to rotate, the rotating shaft drives the rectangular sleeve to rotate, the rectangular sleeve drives the rectangular guide rod to rotate. Under the action of centrifugal force, the rectangular guide rod automatically moves outwards. The rectangular guide rod drives the rectangular scraper to move outwards, and the rectangular scraping wall presses against the inner wall of the pipeline and rotates along the inner wall of the pipeline, and the scraping blade cleans the inner wall of the pipeline.

[0081] The second driving mechanism 50 includes a large sprocket 501 fixed to the rear end of the rotating shaft 305. The large sprocket 501 is connected to a small sprocket 503 through a chain 502. The small sprocket 503 is fixed to the front end of the spline long shaft 504. The two ends of the spline long shaft 504 are respectively rotatably connected to the rear support chuck 10 and the driving frame 21 through bearings;

[0082] The extended end of the spline long shaft 504 passing through the front support chuck 10 is connected with a large bevel gear 505 through splines. The upper end of the large bevel gear 505 meshes with a small bevel gear 506. The small bevel gear 506 is fixed to the motor shaft of the second motor 507. The second motor 507 is fixed to the limit frame 508. The limit frame 508 is fixed to the front support chuck 10; the large bevel gear 505 is movably clamped in the limit groove 5081 of the limit frame 508.

[0083] The second motor 507 is electrically connected to the mobile power source and controller fixed on the front support chuck 10.

[0084] The controller controls the second motor to start. The second motor drives the small bevel gear to rotate. The small bevel gear drives the large bevel gear to rotate. The large bevel gear drives the spline long shaft to rotate through splines. The spline long shaft drives the small sprocket to rotate. The small sprocket drives the large sprocket to rotate through the chain. The large sprocket drives the rotating shaft to rotate so as to drive the scraping wall assembly to rotate.

[0085] A jack 3021 is formed at the inner end of the rectangular guide rod 302;

[0086] The jack 3021 is inserted over the small-diameter cylinder of the stepped cylinder 306. A plurality of disc springs 307 are clamped between the large-diameter cylinder of the stepped cylinder 306 and the inner end of the rectangular guide rod 302; a waist-shaped hole 3061 is formed on the small-diameter cylinder of the stepped cylinder 306. A pin shaft 308 is sleeved in the waist-shaped hole 3061, and the pin shaft 308 is inserted and fixed in the rectangular sleeve 301;

[0087] The inner end of the stepped cylinder 306 is screwed onto a corresponding adjusting screw 309. Two adjusting screws 309 are coaxially fixed on an adjusting wheel 310. The adjusting wheel 310 is movably inserted into the slot 3011 of the rectangular sleeve 301; one side of the adjusting wheel 310 extends out of the rectangular sleeve 301;

[0088] The pitches of the two adjusting screws 309 are equal but the thread helix directions are opposite.

[0089] When the adjusting wheel is rotated, the adjusting wheel drives the two adjusting screws to rotate simultaneously. Since the thread helix directions of the two adjusting screws are opposite, the two stepped cylinders can be driven to approach or move away from each other. The stepped cylinder drives the rectangular guide rod to move outward or inward through a pin shaft, and the rectangular guide rod drives the arc-shaped scraper to move outward or inward, thereby adjusting the outward movement amplitude of the arc-shaped scraper, so as to be applicable to pipes with different inner diameters; when the arc-shaped scraper cleans the inner wall of the pipe, the arc-shaped scraper receives a reaction force from the pipe, and the disc spring always provides an outward supporting force to the rectangular guide rod, so that the arc-shaped scraper can always press against the inner wall of the pipe, ensuring the effectiveness of the pipe cleaning work; at the same time, due to the action of the disc spring, the arc-shaped scraper can move inward when receiving a large resistance, thereby preventing the arc-shaped scraper from being stuck.

[0090] A plurality of circumferentially evenly distributed threaded counterbores 3101 are formed on the outer wall of the adjusting wheel 310.

[0091] An external screw is screwed into the threaded through hole or a smooth rod is inserted into the threaded counterbore, which can facilitate the rotation of the adjusting wheel, thereby facilitating the adjustment of the outward movement amplitude of the arc-shaped scraper.

[0092] The first driving mechanism 40 includes a rack 401 arranged parallel to the guiding support rod 22. The two ends of the rack 401 are respectively fixed on the driving frame 21 and the rear support chuck 10, and the middle part of the rack 401 is inserted into the front support chuck 10;

[0093] A third motor 402 is fixed on the front side wall of the front support chuck 10, and a driving gear 403 is fixed on the third motor 402. The driving gear 403 meshes with the rack 401.

[0094] The third motor 402 is electrically connected to a mobile power source and a controller fixed on the front support chuck 10.

[0095] The controller controls the second motor to reverse, and the third motor drives the driving gear to rotate counterclockwise. At this time, the front support chuck is clamped in the pipe, and the rear support chuck is not clamped with the pipe. The driving gear drives the rack to move forward, and the rack drives the driving frame and the rear support chuck to move forward. The driving frame moves forward and performs a scraping work on the pipe forward through the scraping wall assembly;

[0096] When the two support chucks are close to a certain distance, the third motor stops rotating. Then, the support chuck at the rear is clamped onto the inner wall of the pipeline, and the support chuck at the front releases the clamping of the pipeline. The third motor rotates forward, driving the drive gear to rotate clockwise. Since the support chuck at the rear remains stationary and the rack also does not move, the rack reacts against the drive gear, and the driving mass reacts against the support chuck at the front, thereby driving the support chuck at the front to move forward. After the support chuck at the front moves forward a certain distance; then the support chuck at the front is clamped inside the pipeline, and the support chuck at the rear releases the clamping. Then the third motor rotates in reverse again, driving the support chuck at the rear and the drive frame to move forward again for scraping the wall work.

[0097] Working principle: First, place this device into the pipeline 90 to be cleaned;

[0098] Second, the controller controls the electric telescopic cylinder inside the support chuck at the front to extend. The electric telescopic cylinder drives the two rounded rectangular pistons to move away from each other. The pistons move outwards and squeeze the hydraulic oil into the rounded rectangular through holes, thereby pushing the adjusting support rod outwards. The outward movement of the adjusting support rod drives the arc plate to move outwards. The arc plate presses against the inner wall of the pipeline, and through the frictional force between the inner wall of the pipeline and the arc plate, the fixing work of the support chuck at the front and the pipeline is completed;

[0099] Third, the controller controls the second motor to start. The second motor drives the small bevel gear to rotate. The small bevel gear drives the large bevel gear to rotate. The large bevel gear drives the spline long shaft to rotate through the spline. The spline long shaft drives the small sprocket to rotate. The small sprocket drives the large sprocket to rotate through the chain. The large sprocket drives the rotating shaft to rotate. The rotating shaft drives the rectangular sleeve to rotate. The rectangular sleeve drives the rectangular guide rod to rotate. Through the action of centrifugal force, the rectangular guide rod automatically moves outwards. The rectangular guide rod drives the rectangular scraper to move outwards and, the rectangular scraping wall presses against the inner wall of the pipeline and rotates along the inner wall of the pipeline, and the scraping blade cleans the inner wall of the pipeline;

[0100] Fourth, the controller controls the second motor to rotate in reverse, and the third motor drives the drive gear to rotate counterclockwise. At this time, the support chuck at the front is clamped inside the pipeline, and the support chuck at the rear is not clamped to the pipeline. The drive gear drives the rack to move forward. The rack drives the drive frame and the support chuck at the rear to move forward. The drive frame moves forward and drives the scraping wall assembly to move forward to scrape the pipeline forward;

[0101] When the two supporting chucks approach a certain distance, the third motor stops rotating. The controller controls the electric telescopic cylinder in the rear supporting chuck to extend. The electric telescopic cylinder drives the two rounded rectangular pistons to move away from each other, so that the arc-shaped plate at the rear presses against the inner wall of the pipeline, thereby fixing the rear supporting chuck in the pipeline. Then the controller controls the electric telescopic cylinder in the front supporting chuck to contract. The arc-shaped plate at the front loses hydraulic support, and the arc-shaped plate at the front releases the abutting effect on the inner wall of the pipeline. The controller controls the third motor to rotate forward. The third motor drives the driving gear to rotate clockwise. Since the rear supporting chuck is fixed and does not move, the rack also does not move. The rack reacts with the driving gear, and the driving mass reacts with the front supporting chuck, thereby driving the front supporting chuck to move forward. When the front supporting chuck moves forward a certain distance; then the front supporting chuck is clamped in the pipeline, and the rear supporting chuck is released from the clamping. Then the third motor rotates in reverse again, driving the rear supporting chuck and the driving frame to move forward again for scraping the wall. This process is repeated in a cycle, and the cleaning work of the entire pipeline is completed by advancing and cleaning section by section.

[0102] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the technical principle of the present invention, several improvements and modifications can be made. These improvements and modifications made under the above assumptions should also be regarded as the protection scope of the present invention.

Claims

1. A pipeline cleaning device, comprising two support chucks arranged front and back, characterized in that: A driving frame is provided on the front side of two supporting chucks. The driving frame is fixed at the front ends of two parallel guiding support rods, and the guiding support rods pass through the rear extending ends of the front supporting chucks and are fixed on the rear supporting chucks. A scraping wall assembly is rotatably connected to the driving frame. On the front supporting chuck, a first driving mechanism for driving the driving frame to move forward and a second driving mechanism for driving the scraping wall assembly to rotate are provided. The scraping wall assembly includes a rectangular sleeve, two rectangular guiding rods are sleeved inside the rectangular sleeve, arc-shaped scraping plates are fixed at the outer ends of the rectangular guiding rods, and a plurality of scraping blades are formed on the outer wall of the arc-shaped scraping plates. A rotating shaft is fixed in the middle of the rectangular sleeve, and the rotating shaft is rotatably connected to the driving frame through a bearing. The second driving mechanism includes a large sprocket fixed at the rear end of the rotating shaft. The large sprocket is connected to a small sprocket through a chain. The small sprocket is fixed at the front end of a spline long shaft. The two ends of the spline long shaft are respectively rotatably connected to the rear supporting chuck and the driving frame through bearings. The extending end of the spline long shaft passing through the front supporting chuck is connected with a large bevel gear through a spline. A small bevel gear is meshed with the upper end of the large bevel gear. The small bevel gear is fixed on the motor shaft of a second motor. The second motor is fixed on a limiting frame, and the limiting frame is fixed on the front supporting chuck. The large bevel gear is movably clamped in the limiting groove of the limiting frame. A jack is formed at the inner end of the rectangular guiding rod. The jack is inserted and sleeved on the small-diameter column body of a stepped column body. A plurality of disc springs are clamped between the large-diameter column body of the stepped column body and the inner end of the rectangular guiding rod. A waist-shaped hole is formed on the small-diameter column body of the stepped column body. A pin shaft is sleeved in the waist-shaped hole and is inserted and fixed in the rectangular sleeve. The inner end of the stepped column body is screwed on a corresponding adjusting screw rod. The two adjusting screw rods are coaxially fixed on an adjusting wheel. The adjusting wheel is movably inserted and sleeved in the slot of the rectangular sleeve. One side of the adjusting wheel extends out of the rectangular sleeve. The pitches of the two adjusting screw rods are equal but the thread helix directions are opposite.

2. The pipeline cleaning device according to claim 1, wherein: The supporting chuck includes a supporting seat and four supporting arms circumferentially distributed on the supporting seat. A fillet rectangular cylinder hole with an opening at the lower side is formed in the supporting seat. Two fillet rectangular pistons matching with it are sleeved in the fillet rectangular cylinder hole. The two fillet rectangular pistons are respectively fixed on the cylinder body and the piston rod of an electric telescopic cylinder. A fillet rectangular through hole communicating with the fillet rectangular cylinder hole is formed in the supporting arm. An adjusting support rod is sleeved in each fillet rectangular through hole, and an arc-shaped plate is fixed at the outer end of the adjusting support rod. The two upper fillet rectangular through holes are located above the upper fillet rectangular piston, and the two lower fillet rectangular through holes are located below the lower fillet rectangular piston. A baffle is hermetically fixed at the lower end of the fillet rectangular cylinder hole. The upper hydraulic cavity enclosed by the upper fillet rectangular piston, the two upper fillet rectangular through holes, the two upper adjusting support rods and the fillet rectangular cylinder hole is filled with hydraulic oil. The lower hydraulic cavity enclosed by the lower fillet rectangular piston, the two lower fillet rectangular through holes, the two lower adjusting support rods, the fillet rectangular cylinder hole and the baffle is also filled with hydraulic oil.

3. The pipeline cleaning device according to claim 2, wherein: The fillet rectangular through hole is in the shape of a stepped through hole with a smaller outer diameter and a larger inner diameter. The adjusting support rod includes a rounded rectangular rod inserted into the small end hole of the rounded rectangular through hole, and a rounded rectangular column inserted into the large end hole of the rounded rectangular through hole. A screw is fixed to the outer end of the rounded rectangular column and is screwed into the threaded hole of the rounded rectangular rod; the arc plate is fixed to the outer end of the rounded rectangular rod.

4. The pipe cleaning device according to claim 2, characterized in that: The guiding support rod is inserted into a linear bearing, and the linear bearing is inserted into and fixed to the support seat of the front support chuck. The two guiding support rods are located between the two rounded rectangular pistons of the front support chuck.

5. A pipeline cleaning device according to claim 1, characterized in that: A plurality of circumferentially evenly distributed threaded counterbores are formed on the outer wall of the adjusting wheel.

6. The pipeline cleaning device according to claim 1, characterized in that: The first driving mechanism includes a rack arranged parallel to the guiding support rod. The two ends of the rack are respectively fixed to the driving frame and the rear support chuck, and the middle part of the rack is inserted into the front support chuck. A third motor is fixed to the front side wall of the front support chuck, and a driving gear is fixed to the third motor. The driving gear meshes with the rack.

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