WO2019041560A1

WO2019041560A1 - Device for cleaning inner surface of pipe

Info

Publication number: WO2019041560A1
Application number: PCT/CN2017/110024
Authority: WO
Inventors: 何家骥; 文华平; 李国云; 李新; 张瑞华
Original assignee: 广船国际有限公司
Priority date: 2017-08-29
Filing date: 2017-11-08
Publication date: 2019-03-07
Also published as: CN107377540A; CN107377540B

Abstract

A device for cleaning the inner surface of a pipe, comprising a transmission flexible shaft (100), a support (200), a driving device (300), and a cleaning assembly (500). The transmission flexible shaft (100) is provided with opposite first and second ends; the support (200) is circular and is coaxially connected to the first end; several rollers in contact with the inner wall of the pipe (1) are arranged at the periphery of the support (200) at intervals; the driving device (300) is connected to the second end, and can transfer a torque force to the support (200) by means of the transmission flexible shaft (100), so as to drive the support (200) to move along the length direction of the pipe (1); the cleaning assembly (500) is positioned at one side of the support (200) away from the driving device (300), and is coaxially connected to the support (200). The device for cleaning the inner surface of a pipe can convey the cleaning assembly (500) to a preset position so as to observe the inner surface of the pipe (1) by means of the cleaning assembly (500), and can also place an object to be conveyed in front of the support (200) along a movement direction thereof so that the support (200) conveys the object to be conveyed to a target position. Compared with the prior art, it is not required to dismount or cut a pipe, and thus a lot of manpower, material resources, and time can be saved.

Description

Pipe inner surface cleaning device

Technical field

The invention relates to the technical field of pipeline system operation, in particular to a pipeline inner surface cleaning device.

Background technique

There are many kinds of pipeline systems, such as ships and industries. There are various sizes of diameters, and the pipelines are curved and curved, and the materials are different. In the production, installation and maintenance of pipelines, certain parts of the pipelines shall be cleaned and so on. They cannot be completely entered into the pipelines for treatment. They can only be dismantled or otherwise treated.

Some pipes have a large length and a large number of elbows. When it is necessary to inspect the inner surface of the pipe, if it is necessary to clean the inner surface, only the pipe section can be removed; for pipes connected by detachable joints such as flanges, etc. The pipeline can be removed directly, but if it is a butt weld or a casing welded joint, it needs to be cut and then processed. Especially when there are other objects around the welded joint, it is also necessary to remove the surrounding objects. It takes a lot of manpower and material resources and takes a long time to work.

Summary of the invention

It is an object of the present invention to provide a pipe inner surface cleaning device that can be moved within a pipe to a predetermined position and cleaned the inner surface of the pipe.

To this end, the present invention employs the following technical solutions:

A pipe inner surface cleaning device is provided, comprising:

a drive shaft, the drive shaft having opposite first and second ends;

a bracket, the bracket is circular, the bracket is coaxially connected to the first end, and the outer circumference of the bracket is spaced apart by a plurality of rollers that are in contact with the inner wall of the duct;

a driving device, the driving device is connected to the second end, and the driving device can transmit a torque to the bracket through the transmission flexible shaft to drive the bracket to move along a length of the pipe;

A cleaning assembly is located on a side of the bracket away from the drive device, and the cleaning assembly is coaxially coupled to the bracket.

As a preferred embodiment of the inner surface cleaning device of the pipe, the bracket includes a first bracket and a second bracket that are spaced apart, the first bracket includes a first central shaft and a first portion disposed on an outer circumference of the first central shaft a bracket body, the first bracket body being rotatable about an axis of the first central axis, the second bracket comprising a second central shaft and a second bracket body disposed on an outer circumference of the second central shaft, the The two bracket body is rotatable about an axis of the second central axis;

The cleaning assembly includes a third central shaft and a cleaning device disposed on an outer circumference of the third central shaft, the cleaning device including a connecting arm, and a cleaning brush installed at an end of the connecting arm away from the third central axis ;

The transmission flexible shaft includes a first transmission flexible shaft and a second transmission flexible shaft, and one end of the first central shaft is connected to the second central shaft through the first transmission flexible shaft, and the other end is The third central shaft is connected, and an end of the second central shaft away from the first central shaft is connected to the driving device through the second transmission flexible shaft.

As a preferred embodiment of the inner surface cleaning device, the outer circumference of the first central shaft is coupled to the first bracket body by a first gear set, and the outer circumference of the second central shaft passes through the second gear set and the The second bracket body is coupled, the number of gears of the first gear set is an odd number, and the number of gears of the second gear set is an even number.

In a preferred embodiment of the inner surface cleaning device, the first gear set includes a first sun gear, a first intermediate gear, and a first gear housing in a radial direction of the first central axis, the first a sun gear fixedly mounted on an outer circumference of the first central shaft and meshing with the first intermediate gear The inner circumference of the first gear housing has internal teeth that mesh with the first intermediate gear, and the first bracket body is disposed at an outer circumference of the first gear housing;

In the radial direction of the second central axis, the second gear set includes a second sun gear, a second intermediate gear, a third intermediate gear, and a second gear housing, and the second sun gear is fixedly mounted An outer circumference of the second central shaft and meshed with the third intermediate gear through the second intermediate gear, the inner circumference of the second gear housing having a gear meshing with the third intermediate gear, the Two bracket bodies are disposed on an outer circumference of the second gear housing;

The cleaning assembly further includes a connecting sleeve movably disposed on an outer circumference of the third central shaft, the connecting sleeve being connected to a non-end position of the connecting arm by a connecting rod, the connecting arm passing through the first pivoting The shaft is pivotally connected to an outer circumference of the third central shaft, an axis of the first pivot shaft is perpendicular to an axis of the third central shaft, and the connecting arm is rotatable about the first pivot shaft, An end of the connecting sleeve adjacent to the bracket is fixedly coupled to the sleeve of the first central shaft.

As a preferred embodiment of the inner surface cleaning device of the pipe, the cleaning assembly further includes a positioning ring disposed on an outer circumference of the connecting sleeve, the positioning ring being rotatable about an axis of the connecting sleeve, the connecting rod One end is connected to the connecting arm through a second pivoting shaft, and the other end is connected to the positioning ring through a third pivoting shaft.

As a preferred embodiment of the inner surface cleaning device of the pipe, the first intermediate gear is fixed by a sleeve of the first central shaft, and a sleeve between the first central shaft and the first central shaft is disposed. Have a first yield zone;

The second intermediate gear and the third intermediate gear are fixed by a sleeve of the second central shaft, and a second retaining zone is disposed between the sleeve of the second central shaft and the second central shaft ;

The cleaning assembly further includes a first card shaft mounted in the shaft hole of the third central shaft, and a second card shaft is disposed in the shaft hole of the first central shaft and adjacent to one end of the cleaning assembly. First card axis Selectively snapping with the second card shaft;

The driving device includes a control portion having a first position and a second position in a direction toward the cleaning device, the first sun gear being located when the control portion is in the first position a first retaining zone, the second sun gear is located in the second retaining zone to engage the first sun gear with the first intermediate gear, the second sun gear and the first Two intermediate gears are engaged, and the first card shaft is separated from the second card shaft, the cleaning brush is separated from the inner surface of the pipe; when the control portion is located in the second position, the first sun gear Separating from the first intermediate gear, the second sun gear and the second intermediate gear, and the first card shaft being engaged with the second card shaft, the cleaning brush and the pipe The surface is abutted.

As a preferred embodiment of the inner surface cleaning device of the pipe, the outer circumference of the third central shaft is spaced and uniformly provided with a plurality of the cleaning devices.

As a preferred embodiment of the inner surface cleaning device of the pipe, the driving device further includes an electric motor and a hollow shaft connected to the output shaft of the electric motor, the hollow shaft being coupled to the second transmission flexible shaft, the hollow shaft a hollow sleeve is disposed on the hollow sleeve, and a through hole is defined in a length direction of the hollow shaft, and one end of the control portion is selectively inserted into the dial hole to be connected with the hollow shaft to push The hollow shaft moves along its length.

As a preferred embodiment of the inner surface cleaning device of the pipe, the hollow shaft is connected to the second transmission flexible shaft through a clamping shaft, and the dial shaft is fixed with a dial block, and one end of the control portion is provided with the Dial the card slot to match the card slot.

As a preferred embodiment of the inner surface cleaning device of the pipe, the outer circumference of the output shaft of the electric motor is fixedly provided with a first gear, and the outer circumference of the hollow shaft is provided with a second gear, the first gear and the second gear Engage.

The beneficial effects of the invention: in the invention, the bracket is connected with the driving device through the transmission flexible shaft, and is driven The device can drive the transmission flexible shaft to rotate, and transmit the torque of the transmission flexible shaft to the bracket, so that the bracket drives the cleaning assembly to move along the length of the pipeline in the pipeline, so as to convey the cleaning assembly to a predetermined position, through the cleaning assembly to the pipeline The inner surface is partially cleaned. The inner surface cleaning device of the pipeline in the invention is applied to the local cleaning treatment in the pipeline, and the pipeline is not required to be removed or cut, which can save a lot of manpower, material resources and time.

DRAWINGS

1 is a schematic cross-sectional view showing a pipe inner surface cleaning device according to an embodiment of the present invention.

Figure 2 is a cross-sectional view taken along line A-A of Figure 1.

Figure 3 is a cross-sectional view taken along line B-B of Figure 1.

Figure 4 is an enlarged view of a portion I of Figure 1.

Figure 5 is an enlarged view of a portion II of Figure 1.

Figure 6 is an enlarged view of a portion III of Figure 1.

Figure 7 is a C-direction view of the cleaning assembly of Figure 1.

Figure 8 is a diagram showing a non-use state of the cleaning assembly of the embodiment of the present invention.

FIG. 9 is a schematic structural view of a pipeline internal processing apparatus according to an embodiment of the present invention.

In the picture:

1. Pipeline;

100, transmission flexible shaft; 110, first transmission flexible shaft; 120, second transmission flexible shaft;

200, bracket; 210, first bracket; 211, first central shaft; 212, first bracket body; 213, first sun gear; 214, first intermediate gear; 215, first gear housing; a roller; 217, a second card shaft; 220, a second bracket; 221, a second central shaft; 222, a second bracket body; 223, a second sun gear; 224, a second intermediate gear; 225, a third intermediate gear; 226, a second gear housing; 227, the second roller;

300, drive device; 310, control unit; 320, motor; 330, hollow shaft; 331, long hole; 340, hollow sleeve; 341, dial hole; 350, card shaft; 351, convex key; 352, dial block; 360, the first gear; 370, the second gear;

410, a first yielding zone; 420, a second yielding zone;

500, cleaning assembly; 510, third central axis; 520, connecting arm; 530, cleaning brush; 540, connecting sleeve; 550, connecting rod; 560, positioning ring; 570, first card shaft.

Detailed ways

The technical solution of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

In the description of the present invention, it is to be understood that the orientation or positional relationship of the terms "inside", "outside" and the like is based on the orientation or positional relationship shown in the drawings, and is merely for convenience of description of the present invention and simplified description. Instead of indicating or implying that the device or component referred to must have a particular orientation, constructed and operated in a particular orientation, it is not to be construed as limiting the invention.

Moreover, the terms "first", "second", and "third" are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, features defining "first", "second", and "third" may include one or more of the features, either explicitly or implicitly.

In the description of the present invention, the terms "fixed" and "connected" are to be understood broadly, and may be, for example, a fixed connection, a detachable connection, or an integral; The connection may also be an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and may be internal communication of two components or an interaction relationship of two components. The specific meaning of the above terms in the present invention can be understood in a specific case by those skilled in the art.

In the present invention, the first feature is "on" or "on" the second feature, unless otherwise explicitly stated and defined. "Bottom" may include direct contact of the first and second features, and may also include that the first and second features are not in direct contact but are contacted by additional features between them. Moreover, the first feature "on" the second feature includes the first feature directly above and above the second feature, or merely indicating that the first feature is at a higher level than the second feature. The first feature "under" the second feature includes the first feature directly below and below the second feature, or merely indicating that the first feature level is less than the second feature.

As shown in FIG. 1 to FIG. 9 , the inner surface cleaning device provided in this embodiment includes: a transmission flexible shaft 100 having opposite first and second ends; and a bracket 200 having a circular shape and a bracket The shaft center of the 200 is connected to the first end, and the outer circumference of the bracket 200 is spaced apart from the roller that is in contact with the inner wall of the pipe 1; the driving device 300 is connected to the second end, and the driving device 300 can be driven by the transmission shaft 100. Torque is transmitted to the bracket 200 to drive the bracket 200 to move along the length of the duct 1; the cleaning assembly 500 is located on the side of the bracket 200 away from the driving device 300, and the cleaning assembly is coaxially coupled to the bracket 200. In this embodiment, the outer circumference of the bracket 200 is provided with a roller that is in rolling contact with the inner wall of the pipe 1. The bracket 200 is connected to the driving device 300 through the transmission flexible shaft 100, and the driving device 300 can drive the transmission flexible shaft 100 to rotate, and the transmission flexible shaft The torque of 100 is transmitted to the bracket 200, so that the bracket 200 drives the cleaning assembly 500 to move along the length of the pipe 1 in the pipe 1 to convey the cleaning assembly 500 to a predetermined position, and the inner surface of the pipe 1 is performed by the cleaning assembly 500. Clean processing. In this embodiment, the movement of the stent 200 within the conduit 1 is not affected by the shape of the conduit 1. The inner surface cleaning device of the pipe in the invention is applied to the inner surface of the pipe 1 for cleaning, and the pipe 1 is not required to be removed or cut, which can save a lot of manpower, material resources and time.

The bracket 200 may be a flexible deformable structure such that when the bracket 200 moves within the duct 1, if the duct 1 is bent and the inner diameter becomes small, the bracket 200 can smoothly move within the duct 1.

Preferably, the bracket 200 includes a first bracket 210 and a second bracket 220 which are disposed at intervals. The first bracket 210 includes a first central shaft 211 and a first bracket body 212 disposed on an outer circumference of the first central shaft 211. A bracket body 212 is rotatable about an axis of the first central axis 211, and the second bracket 220 includes a second central shaft 221 and a second bracket body 222 disposed on an outer circumference of the second central shaft 221, and the second bracket body 222 can be wound around the second The axis of the central shaft 221 is rotated; the cleaning assembly 500 includes a third central shaft 510 and a cleaning device disposed on the outer circumference of the third central shaft 510, the cleaning device including the connecting arm 520, and one end of the connecting arm 520 remote from the third central axis 510 a cleaning brush 530; the transmission flexible shaft 100 includes a first transmission flexible shaft 110 and a second transmission flexible shaft 120, and one end of the first central shaft 211 is connected to the second central shaft 221 through the first transmission flexible shaft 110, and One end is connected to the third central shaft 510, and one end of the second central shaft 221 away from the first central shaft 211 is connected to the driving device 300 through the second transmission flexible shaft 120. By setting up two brackets, you can increase the power of the entire unit. In the present embodiment, the bracket 200 is not limited to two, and the number thereof may be designed according to the size of the duct 1. Since the two brackets are connected by the first transmission flexible shaft 110, the second bracket 220 is connected to the driving device 300 through the second transmission flexible shaft 120, and the driving device 300 can transmit the power (torque) to the second transmission flexible shaft 120 to The second bracket 220, the second bracket 220 transmits power to the first bracket 210 through the first transmission flexible shaft 110, and the two brackets are simultaneously advanced or retracted to convey the cleaning assembly 500 to a predetermined position and pass the cleaning brush 530. The inner surface of the pipe 1 is subjected to a partial cleaning process.

In this embodiment, the first transmission flexible shaft 110 and the second transmission flexible shaft 120 each include a flexible transmission shaft body and a flexible protective sleeve disposed on the outer circumference of the flexible transmission shaft.

In this embodiment, the first central shaft 211, the second central shaft 221, the first transmission flexible shaft 110 and the second transmission flexible shaft 120 have opposite first and second ends, wherein the first end is close to the driving device 300, the second end is away from the driving device 300, the first end is provided with a concave connecting pair, and the second end is provided with a convex connecting pair (the second end of the first central shaft 211 is provided with a second clamping shaft), the first center The shaft 211 and the second central shaft 221 are both hollow structures, and the female coupling pair and the male coupling pair are both mounted inside the first central shaft 211 and the second central shaft 221, and are fixed by a snap ring. The first central shaft 211 and the first transmission flexible shaft 110 Between the first transmission flexible shaft 110 and the second central shaft 221 and between the second central shaft 221 and the second transmission flexible shaft 120, respectively, the concave connection pair and the male coupling pair are coupled.

As a preferred embodiment of the present invention, the first bracket body 212 and the second bracket body 222 rotate in opposite directions. For example, when the first transmission flexible shaft 110 drives the first bracket body 212 to rotate in the counterclockwise direction, the first bracket 210 reacts to the first transmission flexible shaft 110, that is, the first bracket 210 has a reaction force to the first transmission flexible shaft 110. If there is only one first bracket 210, if the reaction force is greater than the torque of the first transmission flexible shaft 110 The first bracket 210 will rotate, and the second bracket body 222 rotates in the clockwise direction, and the reaction force of the second bracket 220 against the first transmission flexible shaft 110 can cancel the first bracket body 212 to the first transmission soft. The reaction force of the shaft 110 causes the first bracket body 212 to smoothly rotate.

The outer circumference of the first central shaft 211 is connected to the first bracket body 212 through the first gear set, and the outer circumference of the second central shaft 221 is connected to the second bracket body 222 through the second gear set, and the number of gears of the first gear set Increasingly, the number of gears of the second gear set is an even number to ensure that the first bracket body 212 and the second bracket body 222 are rotated in opposite directions.

Preferably, in a radial direction of the first central axis 211, the first gear set includes a first sun gear 213, a first intermediate gear 214, and a first gear housing 215, and the first sun gear 213 is fixedly mounted on the first central axis. The outer circumference of the second gear housing 215 is engaged with the first intermediate gear 214, the inner circumference of the first gear housing 215 has internal teeth that mesh with the first intermediate gear 214, and the first bracket body 212 is disposed on the outer circumference of the first gear housing 215; Wherein, the sleeve of the first central shaft 211 is provided with a first gear mounting hole, the first intermediate gear 214 is installed in the first gear mounting hole, and the first gear housing 215 is mounted on the first central shaft by two bearings The outer part of the sleeve of 211 is fixed by a cover plate. In the radial direction of the second central axis 221, the second gear set includes a second sun gear 223, a second intermediate gear 224, a third intermediate gear 225, and a second gear housing 226, and the second sun gear 223 is fixedly mounted. The outer circumference of the two central axes 221 The second intermediate gear 224 is meshed with the third intermediate gear 225, the inner circumference of the second gear housing 226 has a gear that meshes with the third intermediate gear 225, and the second bracket body 222 is disposed at the outer circumference of the second gear housing 226. . Wherein, the sleeve of the second central shaft 221 is provided with a second gear mounting hole, the second intermediate gear 224 and the third intermediate gear 225 are mounted in the second gear mounting hole, and the second gear housing 226 passes through two bearings It is mounted on the outside of the sleeve of the second central shaft 221 and is fixed by a cover plate, respectively. The cleaning assembly 500 further includes a connecting sleeve 540 movably disposed on the outer circumference of the third central shaft 510. The connecting sleeve 540 is connected to the non-end position of the connecting arm 520 through the connecting rod 550, and the connecting arm 520 passes through the first pivoting shaft and the first The outer circumference of the three central shafts 510 is pivoted. The axis of the first pivot shaft is perpendicular to the axis of the third central shaft 510. The connecting arm 520 is rotatable about the first pivot shaft. The connecting sleeve 540 is adjacent to one end of the bracket 200 and the first The sleeve of the central shaft 510 is fixedly connected. When the bracket 200 moves along the length of the pipe 1, the connecting arm 520 can be rotated around the first pivoting shaft by the connecting sleeve 540, so that the cleaning brush 530 can selectively abut the inner surface of the pipe 1.

The cleaning assembly 500 further includes a positioning ring 560 disposed on the outer circumference of the connecting sleeve 540. The positioning ring 560 is rotatable about the axis of the connecting sleeve 540. One end of the connecting rod 550 is connected to the connecting arm 520 through the second pivoting shaft, and the other end passes The third pivot shaft is coupled to the positioning ring 560. When the third central shaft 510 rotates, the cleaning device, the connecting rod 550 and the positioning ring 560 can be rotated together with respect to the connecting sleeve 550 to perform cleaning treatment on the inner surface of the pipe 1.

In this embodiment, the first bracket body 212 includes a plurality of first bracket plates disposed on the outer circumference of the first gear housing 215. The first bracket plates are inclined in the same direction and are away from the end of the first gear housing 215. The first roller 216 is disposed, and the tilt direction of the first bracket plate is opposite to the rotation direction of the first bracket 210. The second bracket body 222 includes a plurality of second bracket plates disposed on the outer circumference of the second gear housing 226. The second bracket plate has the same inclination direction, and the second roller 227 is disposed at an end thereof away from the second gear housing 226, and the inclination direction of the second bracket plate is opposite to the rotation direction of the second bracket 220; A bracket plate and a second bracket plate are both flexible plates. The inclination direction of the first bracket plate and the second bracket plate are opposite to the rotation direction thereof, and the first bracket plate and the second bracket plate are both flexible plates, and can adapt to different pipe diameters during the rotation process, and the pipe diameter is relatively smaller than the bracket 200. In the case of the diameter, the first bracket plate and the second bracket plate can be pressure-deformed on the pipe wall to match the pipe diameter, thereby making the movement in the pipe 1 smoother.

The first roller 216 and the second roller 227 are detachably coupled to the first bracket body 212 and the second bracket body 222, respectively, so that different rollers can be replaced in use to achieve different operations. For example, replacing the roller with a brush on the outer periphery can clean the inner wall of the pipe, and replace the roller with a frosted layer to polish and rust the inner wall of the pipe.

As a further preferred embodiment of the present invention, the first roller 216 is in rolling contact with the inner wall of the pipe 1, and the axis of the first roller 216 is inclined toward the side away from the driving device 300; the second roller 227 is in rolling contact with the inner wall of the pipe 1. And the axis of the second roller 227 is inclined toward the side close to the driving device 300, and the inclined design of the two rollers can respectively increase the moving power of the corresponding bracket body.

The first intermediate gear 214 is fixed by the sleeve of the first central shaft 211, and the first retaining area 410 is disposed between the sleeve of the first central shaft 211 and the first central shaft 211; the second intermediate gear 224 and The third intermediate gear 225 is fixed by the sleeve of the second central shaft 221, and the second retaining area 420 is disposed between the sleeve of the second central shaft 221 and the second central shaft 221; the cleaning assembly 500 further includes a third mounting portion A first card shaft 570 in the shaft hole of the center shaft 510, a second card shaft 217 disposed in the shaft hole of the first center shaft 211 and adjacent to the cleaning assembly 500, the first card shaft 570 and the second card shaft 217 Selectively snapping; the driving device 300 includes a control portion 310 having a first position and a second position in a direction toward the cleaning device 500. When the control portion 310 is in the first position, the first sun gear 213 is located at the first position a yielding zone 410, the second sun gear 223 is located in the second yielding zone 420 to engage the first sun gear 213 with the first intermediate gear 214, the second sun gear 223 with the second intermediate gear 224, and The first card shaft 570 is separated from the second card shaft 217, and the cleaning brush 530 is separated from the inner surface of the pipe 1. At this time, the cleaning assembly 500 can be conveyed to the predetermined position by the bracket 200; when the control portion 310 is located at the second position, the first The center gear 213 is separated from the first intermediate gear 214, the second sun gear 223 is separated from the second intermediate gear 224, and the first card shaft 570 is engaged with the second card shaft 217, and the cleaning brush 530 abuts against the inner surface of the pipe 1, At this time, the bracket 200 stops rotating, the first card shaft 570 and the second card shaft 217 are engaged, and the transmission flexible shaft 100 drives the cleaning device to rotate under the action of the driving device 300 to perform local cleaning processing on the inner surface of the pipe 1.

In this embodiment, the first transmission flexible shaft 110, the second transmission flexible shaft 120, the first central shaft 211, the second central shaft 221, and the third central shaft 510 are all hollow shafts.

The outer circumference of the third central shaft 510 is spaced and uniformly provided with a plurality of cleaning devices. Specifically, the outer circumference of the third central shaft 510 in this embodiment is provided with three cleaning devices, and the angle between the adjacent two cleaning devices is 60°.

The driving device 300 further includes a motor 320 and a hollow shaft 330 connected to the output shaft of the motor 320. The hollow shaft 330 is coupled to the second transmission flexible shaft 120. The hollow shaft 330 is provided with a hollow sleeve 340, and the hollow sleeve 340 is hollow. A shaft hole 341 is defined in the longitudinal direction of the shaft 330. One end of the control portion 310 is selectively inserted into the dial hole 341 to be coupled with the hollow shaft 330 to push the hollow shaft 330 to move along the length thereof.

The length of the dial hole 341 corresponds to the moving distance of the control portion 310, that is, when the control portion 310 moves to the first position, the control portion 310 is located at one end of the dial hole 341, and when the control portion 310 moves to the second position, the control portion 310 is located just at the other end of the dial hole 341. In other embodiments, the length of the dial hole 341 may also be set to be larger than the moving length of the control portion 310. As a preferred embodiment of the present invention, the hollow shaft 330 is connected to the second transmission flexible shaft 120 via the third clamping shaft 350. The third clamping shaft 350 is fixed with a dial 352. One end of the control portion 310 is provided with a dial block. The 352 card is matched with the card slot. Preferably, there is a gap between the dial 352 and the inner wall of the hollow sleeve 340 to smoothly rotate the third shaft 350. When the internal processing device of the pipe is operated, the control unit 310 needs to be removed, and when the internal processing device of the pipe stops running, the control unit 310 can be inserted into the dial hole 341 to be engaged with the dial 352, and the control unit 310 can be manually controlled. Move to the first position or the second position to selectively activate and stop the first bracket 210 and the second bracket 220.

A long hole 331 is defined in the longitudinal direction of the hollow shaft 330 on the shaft wall of the hollow shaft 330. The inner wall of the third clamping shaft 350 is provided with a convex key 351, and the third clamping shaft 350 is matched with the long hole 331 by the convex key 351. The control portion 310 is fixedly connected to the protruding key 351 through the mounting hole 341, and the control portion 310 can move the protruding key 351 along the longitudinal direction of the long hole 331. The long hole 331 has opposite first and second ends along the length direction thereof. When the control portion 310 drives the convex key 351 to move to the first end of the long hole 331, the first sun gear 213 is located in the first letting area, and the second The central gear is located in the second retaining zone 420, so that the two brackets stop rotating in the pipe 1. When the control part 310 drives the convex key 351 to move to the second end of the long hole 331, the first sun gear 213 and the first intermediate gear The second center gear 223 is meshed with the second intermediate gear 224.

Wherein, the third card shaft 350 is disposed away from the driving device 300 at one end thereof with a concave connecting pair, which cooperates with a convex connecting pair disposed at one end of the second transmitting flexible shaft 120 to connect the second transmitting flexible shaft 120 and the third card. Axis 350.

The motor 320 is connected to the hollow shaft 330 through two gears. Specifically, the outer circumference of the output shaft of the motor 320 is provided with a first gear 360. The outer circumference of the hollow shaft 330 is provided with a second gear 370, and the first gear 360 and the second gear 370 Engage. When the motor 320 rotates forward, the output shaft of the motor 320 drives the first gear 360 to rotate forward, and the first gear 360 drives the second gear 370 to reverse, thereby inverting the hollow shaft 330 and driving the second transmission flexible shaft 120. The second central shaft 221 and the second sun gear 223 are reversed, the second intermediate gear 224 is rotated forward, the third intermediate gear 225 is reversed, and the second gear housing 226 drives the second bracket body 222 to rotate forward. At the same time, the reverse of the second central axis 221 passes through A transmission flexible shaft 110 transmits the torque to the first hollow shaft 211. The first hollow shaft 211 is reversed together with the first sun gear 213, and the first intermediate gear 212 rotates forwardly, and the first gear housing 215 drives the first bracket. The body 212 is then rotated forward, at which time the two brackets move within the conduit 1 in a direction away from the drive unit 300. When the motor 320 is reversed (the principle is similar to that of the forward rotation, which will not be described herein), the two brackets move in the direction of the drive unit 300 in the duct 1.

In this embodiment, two bearings are disposed between the hollow sleeve 340 and the hollow shaft 330. The two bearings are respectively located at two ends of the second gear 370 along the longitudinal direction of the hollow shaft 330, so that the rotation of the hollow shaft 330 is further Smooth.

In the present embodiment, the hollow sleeve 340 includes a first sleeve for mounting the first gear 360 and the second gear 370 and a second sleeve for mounting the hollow shaft 330, and the dial hole 341 is disposed on the second sleeve .

Under normal circumstances, the inner surface of the oil tanker's cargo pipe needs to be specially coated. Due to the process limitation, it is necessary to provide a detachable joint for each elbow so that the inner surface can be manually cleaned, and the number of flanges is large, resulting in production cost, The installation cost is much improved. By applying the inner surface cleaning device of the invention, the flange setting can be reduced, the cost reduction and efficiency increase can be realized, and the economic benefit can be improved. The calculation of 400 flanges by using one boat can save millions. Cost of piping production and installation.

The inner surface cleaning device of the invention can be applied to internal cleaning of pipelines such as industry, buildings and roads, can reduce the impact on the surrounding environment, reduce unnecessary damage and waste, and improve work efficiency and economic benefits. The inner surface cleaning device of the pipeline has a simple structure and is connected and used by the component type combination, and is convenient to use and simple to maintain. Since the equipment used in the inner part of the pipeline has no electrical parts, the weight of the equipment itself is reduced, and it can be used in a flammable and explosive environment such as oil and gas, and the application range is wide.

It is to be understood that the above-described embodiments are merely preferred embodiments of the invention and the technical principles of the invention, and any changes or substitutions that are readily apparent to those skilled in the art are within the scope of the presently disclosed technology. All should be covered by the scope of the present invention.

The present invention has been described above by way of specific embodiments, but the invention is not limited to the specific embodiments. It will be apparent to those skilled in the art that various modifications, equivalents, changes, and the like can be made in the present invention. However, these modifications are intended to be included within the scope of the present invention as long as they do not depart from the spirit of the invention. In addition, some terms used in the specification and claims of the present application are not limiting, but are merely for convenience of description.

Claims

A pipe inner surface cleaning device, comprising:

a drive shaft, the drive shaft having opposite first and second ends;

a bracket, the bracket is circular, the bracket is coaxially connected to the first end, and the outer circumference of the bracket is spaced apart by a plurality of rollers that are in contact with the inner wall of the duct;

a driving device, the driving device is connected to the second end, and the driving device can transmit a torque to the bracket through the transmission flexible shaft to drive the bracket to move along a length of the pipe;

A cleaning assembly is located on a side of the bracket away from the drive device, and the cleaning assembly is coaxially coupled to the bracket.
A duct inner surface cleaning apparatus according to claim 1, wherein said bracket includes spaced apart first brackets and second brackets, said first brackets including a first central shaft and disposed at said first center a first bracket body of the outer circumference of the shaft, the first bracket body is rotatable about an axis of the first central axis, and the second bracket includes a second central shaft and a second bracket disposed on an outer circumference of the second central shaft a body, the second bracket body is rotatable about an axis of the second central axis;

The cleaning assembly includes a third central shaft and a cleaning device disposed on an outer circumference of the third central shaft, the cleaning device including a connecting arm, and a cleaning brush installed at an end of the connecting arm away from the third central axis ;

The transmission flexible shaft includes a first transmission flexible shaft and a second transmission flexible shaft, and one end of the first central shaft is connected to the second central shaft through the first transmission flexible shaft, and the other end is The third central shaft is connected, and an end of the second central shaft away from the first central shaft is connected to the driving device through the second transmission flexible shaft.
The pipe inner surface cleaning device according to claim 2, wherein an outer circumference of the first central shaft is coupled to the first bracket body through a first gear set, and an outer circumference of the second central shaft passes through a second a gear set is coupled to the second bracket body, and the number of gears of the first gear set is odd The number of gears of the second gear set is an even number.
The pipe inner surface cleaning device according to claim 3, wherein the first gear set sequentially includes a first sun gear, a first intermediate gear, and a first gear case in a radial direction of the first central axis The first sun gear is fixedly mounted on an outer circumference of the first central shaft and meshes with the first intermediate gear, and an inner circumference of the first gear housing has an engagement with the first intermediate gear Internal teeth, the first bracket body is disposed at an outer circumference of the first gear housing;

In the radial direction of the second central axis, the second gear set includes a second sun gear, a second intermediate gear, a third intermediate gear, and a second gear housing, and the second sun gear is fixedly mounted An outer circumference of the second central shaft and meshed with the third intermediate gear through the second intermediate gear, the inner circumference of the second gear housing having a gear meshing with the third intermediate gear, the Two bracket bodies are disposed on an outer circumference of the second gear housing;

The cleaning assembly further includes a connecting sleeve movably disposed on an outer circumference of the third central shaft, the connecting sleeve being connected to a non-end position of the connecting arm by a connecting rod, the connecting arm passing through the first pivoting The shaft is pivotally connected to an outer circumference of the third central shaft, an axis of the first pivot shaft is perpendicular to an axis of the third central shaft, and the connecting arm is rotatable about the first pivot shaft, An end of the connecting sleeve adjacent to the bracket is fixedly coupled to the sleeve of the first central shaft.
The pipe inner surface cleaning device according to claim 4, wherein the cleaning assembly further comprises a positioning ring disposed on an outer circumference of the connecting sleeve, the positioning ring being rotatable about an axis of the connecting sleeve, One end of the connecting rod is connected to the connecting arm through a second pivoting shaft, and the other end is connected to the positioning ring through a third pivoting shaft.
The inner surface cleaning device according to claim 5, wherein the first intermediate gear is fixed by a sleeve of the first central shaft, and the sleeve of the first central shaft is opposite to the first A first yielding zone is disposed between the central axes;

The second intermediate gear and the third intermediate gear are fixed by a sleeve of the second central shaft, and a second retaining zone is disposed between the sleeve of the second central shaft and the second central shaft ;

The cleaning assembly further includes a first card shaft mounted in the shaft hole of the third central shaft, and a second card shaft is disposed in the shaft hole of the first central shaft and adjacent to one end of the cleaning assembly. The first card shaft is selectively engageable with the second card shaft;

The driving device includes a control portion having a first position and a second position in a direction toward the cleaning device, the first sun gear being located when the control portion is in the first position a first retaining zone, the second sun gear is located in the second retaining zone to engage the first sun gear with the first intermediate gear, the second sun gear and the first Two intermediate gears are engaged, and the first card shaft is separated from the second card shaft, the cleaning brush is separated from the inner surface of the pipe; when the control portion is located in the second position, the first sun gear Separating from the first intermediate gear, the second sun gear and the second intermediate gear, and the first card shaft being engaged with the second card shaft, the cleaning brush and the pipe The surface is abutted.
The pipe inner surface cleaning device according to claim 2, wherein a plurality of said cleaning devices are spaced and evenly disposed around the outer circumference of said third center shaft.
A pipe inner surface cleaning device according to claim 6, wherein said driving device further comprises an electric motor and a hollow shaft connected to an output shaft of said electric motor, said hollow shaft being coupled to said second transmission flexible shaft a hollow sleeve is disposed outside the hollow shaft, and the hollow sleeve is provided with a dial hole along the longitudinal direction of the hollow shaft, and one end of the control portion is selectively inserted into the dial hole and the hollow The shafts are coupled to urge the hollow shaft to move along its length.
The pipe inner surface cleaning device according to claim 8, wherein the hollow shaft is connected to the second transmission flexible shaft through a card shaft, and the dial shaft is fixed with a dial block, and one end of the control portion A card slot is provided that is engaged with the dial block.
The pipe inner surface cleaning device according to claim 8, wherein an outer circumference of the output shaft of the electric motor is fixedly provided with a first gear, and an outer circumference of the hollow shaft is provided with a second gear, the first gear and The second gear meshes.