Steel pipe cleaning machine and cleaning method thereof

Abstract

The present invention discloses a steel pipe cleaning machine and a cleaning method thereof, wherein the steel pipe cleaning machine comprises a frame, a cam mechanism, a lifting mechanism, a clamping and fixing mechanism, a scraper beam and a feeding mechanism. The frame comprises four guide columns, a lower frame and an upper frame; the cam mechanism comprises a cam driving device, a cam frame, a guide wheel and a cam plate; the lifting mechanism comprises a lifting frame, a roller, a column and a fork-shaped claw; the clamping and fixing mechanism comprises a clamping and fixing frame, a first fixing device and a second fixing device; the scraper beam comprises a crossbeam, a longitudinal beam and a scraper. The cleaning machine and the cleaning method thereof have the functions of automatic loading, automatic clamping, automatic cleaning of steel pipes and self-feeding and unloading, which changes the backward method of manually removing debris from the surface of steel pipes, greatly improves the cleaning efficiency, reduces the labor of workers, and accelerates the turnover efficiency of steel pipes.

Description

Technical Field

[0001] The invention belongs to the technical field of steel pipe cleaning, and in particular relates to a steel pipe cleaning machine and a cleaning method thereof. Background Art

[0002] At present, scaffolding is often used in construction projects, and scaffolding rental business has gradually emerged. After the scaffolding steel pipe is withdrawn, the surface of the steel pipe is often attached with cement, concrete, mortar and other debris, which needs to be cleaned and maintained by the material turnover station before it can be leased to the project again.

[0003] At present, material transfer stations generally adopt a manual cleaning mode: operators first screen the scrapped products, then pick up, transport and knock them one by one. This steel pipe cleaning mode is very inefficient and cannot meet the cleaning needs of the transfer station. Therefore, it is necessary to establish an automated cleaning system to meet the steel pipe cleaning needs. Summary of the invention

[0004] The present application provides a steel pipe cleaning machine and a cleaning method thereof, which are used to solve the problem that the existing manual cleaning of steel pipes is inefficient and difficult to meet the needs.

[0005] In order to solve the above technical problems, the present invention includes the following technical solutions:

[0006] A steel pipe cleaning machine comprises a frame, a cam mechanism, a lifting mechanism, a clamping and fixing mechanism, a scraper beam and a feeding mechanism;

[0007] The frame includes four vertically arranged guide columns, and a lower frame and an upper frame for fixing the guide columns; a pair of parallel and spaced guide rails are arranged on the lower frame;

[0008] The cam mechanism comprises a cam driving device, a cam frame, a guide wheel and a cam plate; the guide wheel is arranged at the bottom of the cam frame and supported on the guide rail; a plurality of pairs of cam plates are arranged above the cam frame, the top of the cam plate is a multi-step structure, and adjacent steps are connected by a slope; the cam driving device is connected to the cam frame, and can make the cam frame move back and forth horizontally along the guide rail;

[0009] The lifting mechanism comprises a lifting frame, rollers, a column and a fork-shaped claw; the two ends of the lifting frame are respectively sleeved on the guide columns on both sides; a plurality of pairs of rollers are arranged at the bottom of the lifting frame, and the rollers are supported on the top of the cam plate; the fork-shaped claw is arranged on the top of the column, and the fork-shaped claw is used to lift the steel pipe;

[0010] The clamping and fixing mechanism comprises a clamping and fixing frame, a first fixing device and a second fixing device; the two ends of the clamping and fixing frame are respectively sleeved on the guide pillars on both sides and placed on the upper frame; the first fixing device and the second fixing device are arranged on the clamping and fixing frame at intervals, and are respectively used to fix the two ends of the steel pipe; the first fixing device comprises a rotating motor, which can rotate the steel pipe;

[0011] The blade beam comprises a crossbeam, a longitudinal beam and a blade; the crossbeam is fixedly connected to the guide column, the longitudinal beams are arranged in parallel and spaced apart, and the two ends are respectively connected to the crossbeams on both sides, and two rows of staggered blades are arranged under each longitudinal beam;

[0012] The feeding mechanism is used for conveying steel pipes.

[0013] Furthermore, the fork-shaped claw includes a claw base, a claw body and a first universal ball, the claw base is arranged on the top of the column, the bottom of the claw body is connected to the claw base, the top of the claw body includes two branches arranged in an inverted eight shape, each branch is provided with a first universal ball, and the two first universal balls are arranged opposite to each other;

[0014] The claw base is a tubular structure with an open bottom. The claw base is sleeved on the top of the column and is provided with a vertical through hole on the top. A vertical shaft rod is provided at the bottom of the claw body, and the bottom end of the vertical shaft rod passes through the vertical through hole and is fixed on the column. A supporting spring is provided on the vertical shaft rod, and the two ends of the supporting spring respectively abut against the top of the column and the inner top of the claw base.

[0015] Furthermore, the first fixing device comprises a rotating motor, a gear box and a chuck device; the gear box is provided with a gear set to enable the rotating motor to control the chuck device to rotate;

[0016] The chuck device includes a chuck seat, a clamp seat, a clamping jaw, a first plunger spring and a contact; the back of the chuck seat is connected to the gear shaft of the gear set in the gear box, and the front is provided with a clamp seat; two clamping jaws are hingedly provided on the clamp seat, and the clamping jaws include a first leg and a second leg arranged in an L shape, the middle part of the first leg is hinged to the clamp seat, one end is provided with a contact, and the other end forms an integral structure with the second leg; a first plunger spring is provided between the second leg and the chuck seat.

[0017] Further, the second fixing device includes a support, a telescopic driving device, a sliding beam and an ejector pin; the support is connected to the clamping fixing frame, the telescopic driving device is used to make the sliding beam reciprocate horizontally, and the ejector pin is arranged at the front end of the sliding beam;

[0018] The ejector pin includes a shell, a second plunger spring, a cone, a shaft, a bearing, a turntable and a second universal ball; the shell is provided with a circular ring in the middle, a boss is provided in the cavity of the circular ring, and a cross-shaped columnar structure is provided around the circular ring; the columnar structure is provided with a through hole in the horizontal direction, and the second plunger spring is provided in the through hole; the bearing is provided in the cavity of the circular ring and is fixed by four second plunger springs; the shaft is provided on one side of the cone, passes through the bearing and is fixedly connected to the inner ring of the bearing; the turntable is provided on one side of the shell, and is located on both sides of the circular ring boss with the bearing respectively, the turntable is connected to the end of the shaft, and a second universal ball is provided on the contact surface between the turntable and the shell.

[0019] Furthermore, a material return device is also provided on the sliding beam, and the material return device includes a horizontal rod, an end plate, a flap, a tension spring and a limit piece; one end of the horizontal rod is fixedly connected to the sliding beam, and the other end is provided with an end plate, and flaps are hingedly provided on both sides of the end plate, and a tension spring is provided between the end plate and the flap, and the limit piece is used to limit the rotation range of the flap.

[0020] Further, the scraper blade comprises a scraper blade housing, a blade, a fastening bolt and a preload spring;

[0021] The bottom of the blade housing is provided with a slotted hole and a bolt hole;

[0022] The blade is an inverted L-shaped structure, including a horizontal portion and a vertical portion that are integrally arranged, the vertical portion passes through the slot of the blade housing, the bottom end of the vertical portion is provided with a cutting edge, and the horizontal portion is provided with a bolt hole;

[0023] One end of the bolt passes through the bolt hole of the blade housing and the bolt hole of the blade and is fixed on the longitudinal beam. A preload spring is arranged on the bolt, and the preload spring is supported on the horizontal part of the blade and the longitudinal beam respectively.

[0024] Further, the feeding mechanism includes a feeding frame, a feeding drive motor, a transmission mechanism, a feeding chain, a first rotating shaft and a second rotating shaft;

[0025] The first rotating shaft and the second rotating shaft are arranged on the feeding frame in parallel and at intervals, and the two ends of the feeding chain are respectively passed around the first rotating shaft and the second rotating shaft, and the feeding driving motor controls the rotation of the first rotating shaft through the transmission mechanism, so that the feeding chain rotates and the second rotating shaft follows;

[0026] A plurality of fixing seats are arranged at intervals on the feeding chain, and a V-shaped notch for placing the steel pipe is arranged on the top of the fixing seat.

[0027] Furthermore, the top of the cam plate includes a first step, a second step and a third step arranged in sequence from bottom to top, the first step is connected to the second step through a first slope, the second step is connected to the third step through a second slope, and the first slope and the second slope have the same inclination direction;

[0028] When the roller support of the lifting mechanism is on the first step of the cam plate, the fork-shaped claw is in the initial state and matches the position of the steel pipe; when the roller support is on the second step of the cam plate, the fork-shaped claw lifts the steel pipe to a position matching the clamping and fixing mechanism; when the roller support is on the third step of the cam plate, the fork-shaped claw lifts the steel pipe to a position matching the blade beam.

[0029] Accordingly, the present application also provides a method for cleaning a steel pipe using the steel pipe cleaning machine, comprising the following steps:

[0030] Step 1: transport the steel pipe to the top of the fork-shaped claw of the lifting mechanism through the feeding structure;

[0031] Step 2: The cam driving device pushes the cam frame to move, so that the roller of the lifting mechanism moves along the top of the cam plate and lifts up, and the fork-shaped claws of the lifting mechanism lift the steel pipe to a height matching the clamping and fixing mechanism;

[0032] Step 3: The first fixing device and the second fixing device of the clamping fixing mechanism clamp the two ends of the steel pipe;

[0033] Step 4: The cam driving device pushes the cam frame to move, so that the roller of the lifting mechanism continues to move and lift along the top of the cam plate, and the fork-shaped claws of the lifting mechanism lift the clamping and fixing mechanism and the steel pipe to a height matching the blade of the blade beam;

[0034] Step 5: The rotating motor of the first fixing device of the clamping fixing mechanism rotates, driving the steel pipe to rotate, and the scraper cuts the debris on the steel pipe;

[0035] Step 6: After the debris on the steel pipe is cleaned, the rotating motor of the first fixing device of the clamping and fixing mechanism stops rotating, and the cam driving device pulls the cam frame to move, so that the roller of the lifting mechanism moves along the top of the cam plate and descends, so that the clamping and fixing mechanism returns to its initial position;

[0036] Step 7: The second fixing device of the clamping and fixing mechanism and the first clamping and fixing structure loosen the two ends of the steel pipe;

[0037] Step 8: The cam driving device pulls the cam frame to move, so that the lifting mechanism moves along the first slope to the first step, and the steel pipe is placed on the fixed seat of the feeding chain;

[0038] Step 9: Remove the steel pipe through the feeding mechanism.

[0039] Furthermore, the steel pipe is a disc-type steel pipe, including a vertical rod and a connecting disc;

[0040] The first fixing device includes a rotating motor, a gear box and a chuck device;

[0041] The second fixing device comprises a support, a telescopic driving device, a sliding beam and an ejector pin;

[0042] The sliding beam is also provided with a material-returning device, which comprises a horizontal rod, an end plate, a flap, a tension spring and a limiter;

[0043] In step three, the first fixing device and the second fixing device of the clamping and fixing mechanism clamp the two ends of the steel pipe, specifically including: the telescopic driving device pushes the sliding beam to move, and when the flap moves to the connection disk, it flips under the action of the connection disk and crosses the connection disk and then unfolds; the ejector moves and inserts the end of the disc buckle steel pipe, so that the end of the disc buckle steel pipe is pressed against the chuck device;

[0044] In step seven, the second fixing device and the first clamping fixing structure of the clamping and fixing mechanism loosen the two ends of the steel pipe, specifically including: the telescopic driving device pulls the sliding beam back, and the ejector pin is separated from the end of the disc-type steel pipe; the flap pulls the connecting disk of the disc-type steel pipe to separate the disc-type steel pipe from the chuck device.

[0045] Due to the adoption of the above technical scheme, the present invention has the following advantages and positive effects compared with the prior art: the steel pipe cleaning machine delivers the steel pipe to the top of the fork-shaped claws of the lifting mechanism through the feeding mechanism, and the fork-shaped claws of the lifting mechanism lift the steel pipe to a height matching the clamping and fixing mechanism through the cam mechanism, and then fixes the steel pipe through the clamping and fixing mechanism, and the fork-shaped claws of the lifting mechanism lift the steel pipe and the clamping and fixing mechanism to the position of the scraper beam through the cam mechanism, and the steel pipe is rotated through the clamping and fixing mechanism to complete the scraping of the debris on the surface of the steel pipe, and then the clamping and fixing mechanism is separated from the steel pipe, and the steel pipe is placed on the feeding mechanism through the lifting mechanism, and transported away by the feeding mechanism. The cleaning machine has the functions of automatic loading, automatic clamping, automatic cleaning of steel pipes, and self-feeding and unloading, which changes the backward method of manually removing debris on the surface of steel pipes, greatly improves the cleaning efficiency, reduces the labor of workers, and speeds up the turnover efficiency of steel pipes. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] Figure 1 It is a structural schematic diagram of the steel pipe cleaning machine in the present invention;

[0047] Figure 2 It is a front view of the steel pipe cleaning machine in the present invention;

[0048] Figure 3 It is a structural schematic diagram of the frame and the blade beam in the present invention;

[0049] Figure 4 It is a schematic structural diagram of the cam frame, cam plate and guide wheel in the present invention;

[0050] Figure 5 It is a structural schematic diagram of the lifting mechanism in the present invention;

[0051] Figure 6 It is a schematic structural diagram of the fork-shaped supporting claw in the present invention;

[0052] Figure 7 is a cross-sectional view of the fork-shaped claw in the present invention;

[0053] Figure 8 It is a structural schematic diagram of the clamping and fixing mechanism in the present invention;

[0054] Fig. 9 is a schematic structural diagram of the first fixing device in the present invention;

[0055] Fig.10 It is a structural schematic diagram of the chuck device in the present invention;

[0056] Fig.11 is a schematic structural diagram of the second fixing device in the present invention;

[0057] Fig.12 It is a schematic diagram of the structure of the ejector pin in the present invention;

[0058] Fig.13 An exploded view of the ejector pin of the present invention;

[0059] Fig.14 A side view of a longitudinal beam and a blade in the present invention;

[0060] Fig.15 It is a schematic diagram of the structure of the scraper in the present invention;

[0061] Fig.16 It is a structural schematic diagram of the feeding mechanism in the present invention;

[0062] Fig.17 It is a schematic diagram of the structure of the material return device in the present invention.

[0063] The numbers in the figure are as follows:

[0064] 1-Steel pipe;

[0065] 100-frame; 110-guide column; 120-lower frame; 121-guide rail; 130-upper frame;

[0066] 200-cam mechanism; 210-cam driving device; 220-cam frame; 230-guide wheel; 240-cam plate; 241-first step; 242-first slope; 243-second step; 244-second slope; 245-third step; 250-connecting plate;

[0067] 300-lifting mechanism; 310-lifting frame; 311-sliding bearing; 320-roller; 330-column; 340-fork-shaped claw; 341-claw base; 342-claw body; 343-first universal ball; 344-vertical shaft; 345-support spring;

[0068] 400-clamping and fixing mechanism; 410-clamping and fixing frame;

[0069] 420-first fixing device; 421-rotating motor; 422-gear box; 423-chuck device; 4231-chuck seat; 4232-clamp seat; 4233-clamping claw; 4234-first plunger spring; 4235-contact;

[0070] 430-second fixing device; 431-support; 432-telescopic driving device; 433-sliding beam; 434-thimble; 4341-housing; 4342-second plunger spring; 4343-cone; 4344-shaft rod; 4345-bearing; 4346-turntable; 4347-second universal ball; 440-removal device; 441-horizontal rod; 442-end plate; 443-flap plate; 444-tension spring; 445-limiting member;

[0071] 500-blade beam; 510-crossbeam; 520-longitudinal beam; 530-blade; 531-blade housing; 532-blade; 533-fastening bolt; 534-preload spring;

[0072] 600-feeding mechanism; 610-feeding rack; 620-feeding drive motor; 630-transmission mechanism; 640-feeding chain; 641-fixed seat; 650-first rotating shaft; 660-second rotating shaft; 670-conveyor belt. DETAILED DESCRIPTION

[0073] The following is a further detailed description of a steel pipe cleaning machine and a cleaning method provided by the present invention in combination with the accompanying drawings and specific embodiments. The advantages and features of the present invention will become clearer in combination with the following description. It should be noted that the accompanying drawings are in a very simplified form and are not in precise proportions, and are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the present invention.

[0074] Embodiment 1

[0075] Combination Figure 1 and Figure 2 As shown, a steel pipe cleaning machine provided in this embodiment includes a frame 100 , a cam mechanism 200 , a lifting mechanism 300 , a clamping and fixing mechanism 400 , a scraper beam 500 , and a feeding mechanism 600 .

[0076] Combination Figures 1 to 3As shown, the frame 100 includes four vertically arranged guide posts 110, and a lower frame 120 and an upper frame 130 for fixing the guide posts 110. The lower frame 120 is provided with a pair of parallel and spaced guide rails 121.

[0077] Combination Figure 1 , Figure 2 and Figure 4 As shown, the cam mechanism 200 includes a cam driving device 210, a cam frame 220, a guide wheel 230 and a cam plate 240. The guide wheels 230 are arranged at the bottom of the cam frame 220 and are arranged in pairs. The guide wheels 230 are supported on the guide rail 121. A plurality of pairs of cam plates 240 are arranged above the cam frame 220, and the cam plates 240 can be fixed on the cam frame 220 through a connecting plate 250. The top of the cam plate 240 is a multi-step structure, and adjacent steps are connected by slopes. For example, the top of the cam plate 240 includes a first step 241, a second step 243 and a third step 245 arranged in sequence from bottom to top, the first step 241 and the second step 243 are connected by a first slope 242, the second step 243 and the third step 245 are connected by a second slope 243, and the first slope 242 and the second slope 243 have the same inclination direction. The cam driving device 210 is connected to the cam frame 220 , and can make the cam frame 220 move horizontally back and forth along the guide rail 121 .

[0078] Combination Figure 1 , Figure 2 , Figure 4 and Figure 5As shown, the lifting mechanism 300 includes a lifting frame 310, rollers 320, a column 330 and a fork-shaped claw 340. The two ends of the lifting frame 310 are respectively sleeved on the guide columns 110 on both sides. For example, a sliding bearing 311 can be provided at the connection between the lifting frame 310 and the guide column 110, so that the sliding bearing 311 is sleeved on the guide column 110. A plurality of pairs of rollers 320 are provided at the bottom of the lifting frame 310. The rollers 320 are supported on the top of the cam plate 240. When the cam driving device 210 of the cam mechanism 200 pushes the cam frame 220 to reciprocate, the rollers 320 move along the top of the cam plate 240. The fork-shaped claw 340 is provided on the top of the column 330. The fork-shaped claw 340 is used to lift the steel pipe 1. As an example, the fork-shaped claw 340 includes a claw base 341, a claw body 342 and a first universal ball 343. The claw base 341 is arranged on the top of the column 330, and the bottom of the claw body 342 is connected to the claw base 341. The top of the claw body 342 includes two branches arranged in an inverted eight shape, and each branch is provided with a first universal ball 343. The two first universal balls 343 are arranged opposite to each other. The two first universal balls 343 can be used to support the steel pipe 1 without restricting the rotation of the steel pipe. Preferably, the claw base 341 is a tubular structure with an open bottom, the claw base 341 is sleeved on the top of the column, and a vertical through hole is provided on the top of the claw base 341; a vertical shaft rod 344 is provided at the bottom of the claw body 342, the bottom end of the vertical shaft rod 344 passes through the vertical through hole and is fixed on the column; a support spring 345 is provided on the vertical shaft rod 344, and the two ends of the support spring 345 respectively abut against the top of the column 330 and the inner top of the claw base 341; when the first universal ball 343 is subjected to a large pressure, the lifting mechanism 300 squeezes the support spring 345 to compress the support spring 345, and the lifting mechanism 300 has space to move downward, which can prevent the scraper from damaging the steel pipe.

[0079] It should be noted that when the roller 320 of the lifting mechanism 300 is supported on the first step 241 of the cam plate 240, the fork-shaped claw 340 is in the initial state and matches the position of the steel pipe 1; when the roller 320 is supported on the second step 243 of the cam plate 240, the fork-shaped claw 340 lifts the steel pipe 1 to a position matching the clamping and fixing mechanism 400; when the roller 320 is supported on the third step 245 of the cam plate 240, the fork-shaped claw 340 lifts the steel pipe 1 to a position matching the scraper beam 500, which can be used for steel pipe scraping construction.

[0080] Combination Figure 1 , Figure 2 and Figure 8As shown, the clamping and fixing mechanism 400 includes a clamping and fixing frame 410, a first fixing device 420 and a second fixing device 430. The two ends of the clamping and fixing frame 410 are respectively sleeved on the guide pillars 110 on both sides and placed on the upper frame 130 of the frame 100, and the clamping and fixing frame 410 is located directly above the lifting frame 310. The first fixing device 420 and the second fixing device 430 are arranged on the clamping and fixing frame 410 at intervals, and are respectively used to fix the two ends of the steel pipe 1. The first fixing device 420 includes a rotating motor 421, which can rotate the steel pipe.

[0081] Combination Figure 1 , Figure 2 , Figures 8 to 10 As shown, the first fixing device 420 includes a rotating motor 421, a gear box 422 and a chuck device 423. The gear box 422 is provided with a gear set to enable the rotating motor 421 to control the chuck device 423 to rotate. The gear set can be set as needed. The chuck device 423 is connected to the gear shaft of the gear set. The rotation of the gear can cause the chuck device 423 to rotate. The gear set can also have a deceleration function. As an example, the chuck device 423 includes a chuck seat 4231, a clamp seat 4232, a clamping jaw 4233, a first plunger spring 4234 and a contact 4235; the back of the chuck seat 4231 is connected to the gear shaft of the gear set in the gear box 422, and the front is provided with a clamp seat 4232, and two clamping jaws 4233 are hingedly provided on the clamp seat 4232, and the clamping jaw 4233 includes a first leg and a second leg arranged in an L shape, the middle part of the first leg is hinged to the clamp seat 4232, one end is provided with a contact 4235, and the other end forms an integral structure with the second leg; a first plunger spring 4234 is provided between the second leg and the chuck seat 4231, and the first plunger spring 4234 can make the two first legs open together in the initial state, and when the end of the steel pipe squeezes the second leg to compress and deform the first plunger spring 4234, the two first legs will be spread apart, so that the contact 4235 tightens the inner wall of the steel pipe. Of course, the rotating shaft of the rotating motor can also be directly connected to the chuck device 423, and the chuck device 423 can also be replaced by an ejector pin.

[0082] Combination Figure 1 , Figure 2 , Figures 8 to 13As shown, the second fixing device 430 includes a support 431, a telescopic driving device 432, a sliding beam 433 and an ejector pin 434. The support 431 is connected to the clamping fixing frame 410. The telescopic driving device 432 is used to make the sliding beam 433 move back and forth horizontally, and can be an electric push rod or a jack. The ejector pin 434 is arranged at the front end of the sliding beam 433. A plurality of ejectors 434 can be arranged on a sliding beam 433. The number of ejectors 434 is the same as the number of the chuck device 423 of the first fixing device 420, and the positions correspond. A horizontal support rod is arranged on the support 431, and the two ends of the sliding beam 433 are respectively mounted on the horizontal support rods on both sides, and can only move horizontally along the horizontal support rod. For example, the ejector pin 434 includes a housing 4341, a second plunger spring 4342, a cone 4343, a shaft 4344, a bearing 4345, a turntable 4346, and a second universal ball 4347; the housing 4341 has a circular ring in the middle, a boss is arranged in the cavity of the circular ring, a cross-shaped columnar structure is arranged around the circular ring, the columnar structure has a through hole along the horizontal direction, a second plunger spring 4342 is arranged in the through hole, the bearing is arranged in the cavity of the circular ring, and is supported and fixed by four second plunger springs 4342. The shaft 4344 is arranged on one side of the cone 4343, passes through the bearing 4345, and is fixedly connected to the inner ring of the bearing. The rotating disk 4346 is arranged on one side of the housing 4341, and the bearing is respectively located on both sides of the annular boss. The rotating disk 4346 is connected to the end of the shaft rod, and a second universal ball 4347 is arranged on the contact surface between the rotating disk 4346 and the housing 4341 to reduce the rotation resistance of the rotating disk 4346. The ejector pin in this embodiment has an adaptive function. When the cone deviates from the axis of the steel pipe, the force of the steel pipe acting on the cone can make the second plunger spring 4342 adjust the position of the bearing in the housing 4341 so that the cone is inserted into the end of the steel pipe.

[0083] Combination Figures 1 to 3 , Fig.14 and Fig.15As shown, the blade beam 500 includes a crossbeam 510, a longitudinal beam 520 and a blade 530. The crossbeam 510 is fixedly connected to the guide column 110, and the longitudinal beams 520 are arranged in parallel and spaced apart and connected to the crossbeams on both sides at both ends. Two rows of blades 530 are arranged under each longitudinal beam. The blade 530 includes a blade housing 531, a blade 532, a fastening bolt 533 and a preload spring 534. The bottom of the blade housing 531 is provided with a slot and a bolt hole; the blade is an inverted L-shaped structure, including an integrally arranged horizontal part and a vertical part, the vertical part passes through the slot of the blade housing 531, the bottom end of the vertical part is provided with a cutting edge, and the horizontal part is provided with a bolt hole; one end of the bolt passes through the bolt hole of the blade housing 531 and the bolt hole of the blade and is fixed on the longitudinal beam. The bolt is provided with a preload spring, and the preload spring is supported on the horizontal part of the blade and the longitudinal beam respectively. When the scraper beam 500 scrapes the debris on the surface of the steel pipe 1 and the blade edge force is too large, the blade will compress the preload spring to move the blade upward to prevent the blade from damaging the steel pipe. The two rows of scrapers are staggered to cover the entire steel pipe. Of course, the scraper can also adopt other structures, such as directly setting the blade on the longitudinal beam.

[0084] Combination Figure 1 , Figure 2 and Fig.16 As shown, the feeding mechanism 600 includes a feeding frame 610, a feeding drive motor 620, a transmission mechanism 630, a feeding chain 640, a first rotating shaft 650 and a second rotating shaft 660. The first rotating shaft 650 and the second rotating shaft 660 are arranged on the feeding frame 610 in parallel and at intervals. The two ends of the feeding chain 640 respectively pass around the first rotating shaft 650 and the second rotating shaft 660. The feeding drive motor 620 controls the rotation of the first rotating shaft 650 through the transmission mechanism 630, thereby rotating the feeding chain 640 and the second rotating shaft 660 follows. A plurality of fixed seats 641 are arranged at intervals on the feeding chain 640, and a V-shaped notch for placing steel pipes is arranged on the top of the fixed seat 641. The feeding mechanism 600 further includes a third rotating shaft and a fourth rotating shaft fixed on the feeding frame 610, and a conveyor belt 670. The two ends of the conveyor belt 670 respectively pass around the third rotating shaft and the fourth rotating shaft. The feeding drive motor 620 controls the rotation of the third rotating shaft, drives the conveyor belt 670 to rotate, and the fourth rotating shaft is driven. The conveyor belt 670 is used to collect the debris after shoveling.

[0085] The working principle of the steel pipe cleaning machine is as follows: the steel pipe is placed on the fixed seat of the feeding chain 640, and the steel pipe is sent to the top of the fork-shaped claw 340 of the lifting mechanism 300 by the feeding mechanism 600; the cam drive device 210 of the cam mechanism 200 pushes the cam frame 220 to move, so that the lifting mechanism 300 moves along the first slope 242 to the second step 243, and the fork-shaped claw 340 of the lifting mechanism 300 lifts the steel pipe to a height matching the clamping and fixing mechanism 400; the second fixing device 430 of the clamping and fixing mechanism 400 and the first clamping and fixing structure clamp both ends of the steel pipe; the cam drive device 210 of the cam mechanism 200 pushes the cam frame 220 to move, so that the lifting mechanism 300 moves along the second slope 243 to the third step 245, and the fork-shaped claw 340 of the lifting mechanism 300 lifts the clamping and fixing mechanism 400 and the steel pipe to a height matching the blade of the blade beam 500; The rotating motor of the first fixing device 420 of the clamping and fixing mechanism 400 rotates, driving the steel pipe to rotate, and the scraper cuts the debris on the steel pipe; after the debris is cleaned up, the rotating motor of the first fixing device 420 of the clamping and fixing mechanism 400 stops rotating, and the cam drive device 210 of the cam mechanism 200 pulls the cam frame 220 to move, so that the lifting mechanism 300 moves along the second slope 243 to the second step 243, and the clamping and fixing mechanism 400 returns to the initial position; the second fixing device 430 of the clamping and fixing mechanism 400 and the first clamping and fixing structure loosen the two ends of the steel pipe; the cam drive device 210 of the cam mechanism 200 pulls the cam frame 220 to move, so that the lifting mechanism 300 moves along the first slope 242 to the first step 241, and the steel pipe is placed on the fixed seat of the feeding chain 640; the steel pipe is sent away by the feeding mechanism 600, and slides from one end of the feeding frame 610 to the steel pipe collecting device.

[0086] Embodiment 2

[0087] This embodiment provides a method for cleaning a steel pipe using a steel pipe cleaning machine. Figures 1 to 17 The method is further described. The method comprises the following steps:

[0088] Step 1: Place the steel pipe 1 on the fixed seat 641 of the feeding chain 640, and use the feeding mechanism 600 to deliver the steel pipe 1 to the top of the fork-shaped claw 340 of the lifting mechanism 300;

[0089] Step 2: The cam driving device 210 pushes the cam frame 220 to move, so that the roller of the lifting mechanism 300 moves along the top of the cam plate 240 and lifts up, and the fork-shaped claw 340 of the lifting mechanism 300 lifts the steel pipe to a height matching the clamping and fixing mechanism 400;

[0090] Step 3: The first fixing device 420 and the second fixing device 430 of the clamping and fixing mechanism 400 clamp the two ends of the steel pipe;

[0091] Step 4: The cam driving device 210 pushes the cam frame 220 to move, so that the roller of the lifting mechanism 300 continues to move and lift along the top of the cam plate 240, and the fork claw 340 of the lifting mechanism 300 lifts the clamping and fixing mechanism 400 and the steel pipe to a height matching the blade of the blade beam 500;

[0092] Step 5: The rotary motor of the first fixing device 420 of the clamping and fixing mechanism 400 rotates, driving the steel pipe to rotate, and the scraper cuts the debris on the steel pipe;

[0093] Step 6: After the debris on the steel pipe is cleaned, the rotary motor of the first fixing device 420 of the clamping and fixing mechanism 400 stops rotating, and the cam drive device 210 of the cam mechanism 200 pulls the cam frame 220 to move, so that the roller of the lifting mechanism 300 moves along the top of the cam plate 240 and descends, so that the clamping and fixing mechanism 400 returns to its initial position;

[0094] Step 7: The second fixing device 430 of the clamping and fixing mechanism 400 and the first clamping and fixing structure loosen the two ends of the steel pipe;

[0095] Step 8: The cam driving device 210 pulls the cam frame 220 to move, so that the lifting mechanism 300 moves along the first slope 242 to the first step 241, and the steel pipe is placed on the fixed seat of the feeding chain 640;

[0096] Step nine: The steel pipe is removed by the feeding mechanism 600 and slides from one end of the feeding rack 610 into the steel pipe collecting device.

[0097] Furthermore, the steel pipe is a disc-type steel pipe, including a vertical rod and a connecting disc;

[0098] The first fixing device 420 includes a rotating motor 421, a gear box 422 and a chuck device 423;

[0099] The second fixing device 430 includes a support 431, a telescopic driving device 432, a sliding beam 433 and a ejector pin 434;

[0100] The sliding beam 433 is also provided with a material return device 440, and the material return device 440 includes a horizontal rod 441, an end plate 442, a flap 443, a tension spring 444 and a limiter 445;

[0101] In step 3, the first fixing device 420 and the second fixing device 430 of the clamping and fixing mechanism 400 clamp the two ends of the steel pipe, specifically including: the telescopic driving device 432 pushes the sliding beam 433 to move, and when the flap moves to the connection disk, it flips under the action of the connection disk and crosses the connection disk and then unfolds; the ejector moves and inserts into the end of the disc buckle steel pipe, so that the end of the disc buckle steel pipe is pressed against the chuck device 423;

[0102] In step seven, the second fixing device 430 and the first clamping and fixing structure of the clamping and fixing mechanism 400 loosen the two ends of the steel pipe, specifically including: the telescopic driving device 432 pulls the sliding beam 433 back, and the ejector pin is separated from the end of the disc-type steel pipe; the flap pulls the connecting disk of the disc-type steel pipe to separate the disc-type steel pipe from the chuck device 423.

[0103] It should be noted that when the cleaning machine cleans the disc-type steel pipe, the arrangement of the scraper should match the disc-type steel pipe, a notch is set at the connection plate, the connection plate is inserted into the notch, and the steel pipe upright is cleaned. When the fork-shaped claw 340 of the lifting mechanism 300 lifts the clamping and fixing mechanism 400 and the steel pipe to a height matching the scraper of the scraper beam 500, there is a pre-tightening force between the scraper and the steel pipe, which is convenient for scraping debris on the steel pipe.

[0104] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0105] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A steel pipe cleaning machine, characterized in that: It includes a frame, a cam mechanism, a lifting mechanism, a clamping and fixing mechanism, a scraper beam and a feeding mechanism; The frame includes four vertically arranged guide columns, and a lower frame and an upper frame for fixing the guide columns; a pair of parallel and spaced guide rails are arranged on the lower frame; The cam mechanism comprises a cam driving device, a cam frame, a guide wheel and a cam plate; the guide wheel is arranged at the bottom of the cam frame and supported on the guide rail; a plurality of pairs of cam plates are arranged above the cam frame, the top of the cam plate is a multi-step structure, and adjacent steps are connected by a slope; the cam driving device is connected to the cam frame, and can make the cam frame move back and forth horizontally along the guide rail; The lifting mechanism comprises a lifting frame, rollers, a column and a fork-shaped claw; the two ends of the lifting frame are respectively sleeved on the guide columns on both sides; a plurality of pairs of rollers are arranged at the bottom of the lifting frame, and the rollers are supported on the top of the cam plate; the fork-shaped claw is arranged on the top of the column, and the fork-shaped claw is used to lift the steel pipe; The clamping and fixing mechanism comprises a clamping and fixing frame, a first fixing device and a second fixing device; the two ends of the clamping and fixing frame are respectively sleeved on the guide pillars on both sides and placed on the upper frame; the first fixing device and the second fixing device are arranged on the clamping and fixing frame at intervals, and are respectively used to fix the two ends of the steel pipe; the first fixing device comprises a rotating motor, which can rotate the steel pipe; The blade beam comprises a crossbeam, a longitudinal beam and a blade; the crossbeam is fixedly connected to the guide column, the longitudinal beams are arranged in parallel and spaced apart, and the two ends are respectively connected to the crossbeams on both sides, and two rows of staggered blades are arranged under each longitudinal beam; The feeding mechanism is used for conveying steel pipes.

2. The steel pipe cleaning machine according to claim 1, characterized in that: The fork-shaped claw includes a claw base, a claw body and a first universal ball. The claw base is arranged on the top of the column. The bottom of the claw body is connected to the claw base. The top of the claw body includes two branches arranged in an inverted eight shape. Each branch is provided with a first universal ball. The two first universal balls are arranged opposite to each other. The claw base is a tubular structure with an open bottom. The claw base is sleeved on the top of the column and is provided with a vertical through hole on the top. A vertical shaft rod is provided at the bottom of the claw body, and the bottom end of the vertical shaft rod passes through the vertical through hole and is fixed on the column. A supporting spring is provided on the vertical shaft rod, and the two ends of the supporting spring respectively abut against the top of the column and the inner top of the claw base.

3. The steel pipe cleaning machine according to claim 1, characterized in that: The first fixing device comprises a rotating motor, a gear box and a chuck device; the gear box is provided with a gear set for the rotating motor to control the chuck device to rotate; The chuck device includes a chuck seat, a clamp seat, a clamping jaw, a first plunger spring and a contact; the back of the chuck seat is connected to the gear shaft of the gear set in the gear box, and the front is provided with a clamp seat; two clamping jaws are hingedly provided on the clamp seat, and the clamping jaws include a first leg and a second leg arranged in an L shape, the middle part of the first leg is hinged to the clamp seat, one end is provided with a contact, and the other end forms an integral structure with the second leg; a first plunger spring is provided between the second leg and the chuck seat.

4. The steel pipe cleaning machine according to claim 1 or 3, characterized in that: The second fixing device includes a support, a telescopic driving device, a sliding beam and an ejector pin; the support is connected to the clamping fixing frame, the telescopic driving device is used to make the sliding beam move horizontally back and forth, and the ejector pin is arranged at the front end of the sliding beam; The ejector pin includes a shell, a second plunger spring, a cone, a shaft, a bearing, a turntable and a second universal ball; the shell is provided with a circular ring in the middle, a boss is provided in the cavity of the circular ring, and a cross-shaped columnar structure is provided around the circular ring; the columnar structure is provided with a through hole in the horizontal direction, and the second plunger spring is provided in the through hole; the bearing is provided in the cavity of the circular ring and is fixed by four second plunger springs; the shaft is provided on one side of the cone, passes through the bearing and is fixedly connected to the inner ring of the bearing; the turntable is provided on one side of the shell, and is located on both sides of the circular ring boss with the bearing respectively, the turntable is connected to the end of the shaft, and a second universal ball is provided on the contact surface between the turntable and the shell.

5. The steel pipe cleaning machine according to claim 4, characterized in that: The sliding beam is also provided with a material return device, which includes a horizontal rod, an end plate, a flap, a tension spring and a limit piece; one end of the horizontal rod is fixedly connected to the sliding beam, and the other end is provided with an end plate, and flaps are hingedly provided on both sides of the end plate, a tension spring is provided between the end plate and the flap, and the limit piece is used to limit the rotation range of the flap.

6. The steel pipe cleaning machine according to claim 1, characterized in that: The scraper comprises a scraper housing, a blade, a fastening bolt and a preload spring; The bottom of the blade housing is provided with a slotted hole and a bolt hole; The blade is an inverted L-shaped structure, including a horizontal portion and a vertical portion that are integrally arranged, the vertical portion passes through the slot of the blade housing, the bottom end of the vertical portion is provided with a cutting edge, and the horizontal portion is provided with a bolt hole; One end of the bolt passes through the bolt hole of the blade housing and the bolt hole of the blade and is fixed on the longitudinal beam. A preload spring is arranged on the bolt, and the preload spring is supported on the horizontal part of the blade and the longitudinal beam respectively.

7. The steel pipe cleaning machine according to claim 1, characterized in that: The feeding mechanism comprises a feeding frame, a feeding drive motor, a transmission mechanism, a feeding chain, a first rotating shaft and a second rotating shaft; The first rotating shaft and the second rotating shaft are arranged on the feeding frame in parallel and at intervals, and the two ends of the feeding chain are respectively passed around the first rotating shaft and the second rotating shaft, and the feeding driving motor controls the rotation of the first rotating shaft through the transmission mechanism, so that the feeding chain rotates and the second rotating shaft follows; A plurality of fixing seats are arranged at intervals on the feeding chain, and a V-shaped notch for placing the steel pipe is arranged on the top of the fixing seat.

8. The steel pipe cleaning machine according to claim 1, characterized in that: The top of the cam plate includes a first step, a second step and a third step arranged in sequence from bottom to top, the first step is connected to the second step via a first slope, the second step is connected to the third step via a second slope, and the first slope and the second slope have the same inclination direction; When the roller of the lifting mechanism is supported on the first step of the cam plate, the fork-shaped claw is in the initial state and matches the position of the steel pipe; When the roller support is located at the second step of the cam plate, the fork-shaped claws lift the steel pipe to a position matching the clamping and fixing mechanism; when the roller support is located at the third step of the cam plate, the fork-shaped claws lift the steel pipe to a position matching the blade beam.

9. A method for cleaning a steel pipe using a steel pipe cleaning machine as claimed in claim 1, characterized in that: The steps include: Step 1: transport the steel pipe to the top of the fork-shaped claw of the lifting mechanism through the feeding structure; Step 2: The cam driving device pushes the cam frame to move, so that the roller of the lifting mechanism moves along the top of the cam plate and lifts up, and the fork-shaped claws of the lifting mechanism lift the steel pipe to a height matching the clamping and fixing mechanism; Step 3: The first fixing device and the second fixing device of the clamping fixing mechanism clamp the two ends of the steel pipe; Step 4: The cam driving device pushes the cam frame to move, so that the roller of the lifting mechanism continues to move and lift along the top of the cam plate, and the fork-shaped claws of the lifting mechanism lift the clamping and fixing mechanism and the steel pipe to a height matching the blade of the blade beam; Step 5: The rotating motor of the first fixing device of the clamping fixing mechanism rotates, driving the steel pipe to rotate, and the scraper cuts the debris on the steel pipe; Step 6: After the debris on the steel pipe is cleaned, the rotating motor of the first fixing device of the clamping and fixing mechanism stops rotating, and the cam driving device pulls the cam frame to move, so that the roller of the lifting mechanism moves along the top of the cam plate and descends, so that the clamping and fixing mechanism returns to its initial position; Step 7: The second fixing device of the clamping and fixing mechanism and the first clamping and fixing structure loosen the two ends of the steel pipe; Step 8: The cam driving device pulls the cam frame to move, so that the lifting mechanism moves along the first slope to the first step, and the steel pipe is placed on the fixed seat of the feeding chain; Step 9: Remove the steel pipe through the feeding mechanism.

10. The steel pipe cleaning machine according to claim 9, characterized in that: The steel pipe is a disc-type steel pipe, comprising a vertical rod and a connecting disc; The first fixing device includes a rotating motor, a gear box and a chuck device; The second fixing device comprises a support, a telescopic driving device, a sliding beam and an ejector pin; The sliding beam is also provided with a material-returning device, which comprises a horizontal rod, an end plate, a flap, a tension spring and a limiter; In step three, the first fixing device and the second fixing device of the clamping and fixing mechanism clamp the two ends of the steel pipe, specifically including: the telescopic driving device pushes the sliding beam to move, and when the flap moves to the connection disk, it flips under the action of the connection disk and crosses the connection disk and then unfolds; the ejector moves and inserts the end of the disc buckle steel pipe, so that the end of the disc buckle steel pipe is pressed against the chuck device; In step seven, the second fixing device and the first fixing structure of the clamping and fixing mechanism loosen the two ends of the steel pipe, specifically including: the telescopic driving device pulls the sliding beam back, and the ejector pin is separated from the end of the disc buckle steel pipe; The flap pulls the connecting disk of the disc-type steel pipe to separate the disc-type steel pipe from the chuck device.

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