CN109277381B

CN109277381B - Symmetrical mechanical high-speed pipe cleaner and using method thereof

Info

Publication number: CN109277381B
Application number: CN201811416955.XA
Authority: CN
Inventors: 张斌; 刘增福; 李青岩; 张雨; 闫诗雨; 王春晖
Original assignee: Harbin Institute of Technology
Current assignee: Harbin Institute of Technology
Priority date: 2018-11-26
Filing date: 2018-11-26
Publication date: 2021-04-02
Anticipated expiration: 2038-11-26
Also published as: CN109277381A

Abstract

A symmetrical mechanical high-speed pipe cleaner and a using method thereof relate to a pipe cleaner and a using method thereof. The invention solves the problems of incomplete cleaning and long time consumption of the solid rust with high adhesive force in the existing pipeline. The symmetrical mechanical high-speed pipe cleaner comprises a head end cleaning disc, a tail end cleaning disc, a head end cleaning power device, a tail end cleaning power device, a head end support, a middle section support, a tail end support, an axial movement power device, a thread scale adjusting rod and a moving wheel device. The using method comprises the following steps: firstly, calculating the adjusting distance of a thread scale adjusting rod; adjusting the working radius of the pipe cleaning brush and the scales of the thread scale adjusting rod; thirdly, the symmetrical mechanical high-speed pipe cleaner enters the cleaning pipe; fourthly, starting the motor; fifthly, moving in the reverse direction; and sixthly, a pipe cleaner outlet pipe. The invention relates to a symmetrical mechanical high-speed pipe cleaner and a using method thereof.

Description

Symmetrical mechanical high-speed pipe cleaner and using method thereof

Technical Field

The invention relates to a pipe cleaner and a using method thereof.

Background

With the continuous expansion of the total economic quantity in China, the environmental pressure is higher and higher, pollutants generated after coal combustion are complex, and the treatment difficulty is higher, so that the energy structure is always optimized in China, the ratio of natural gas and oil in primary energy in China is heavier and heavier, compared with coal, the oil and the natural gas are relatively clean, and the coal-fired coal-. The reason is mainly because the transportation and exploitation of oil, natural gas and other fluids mainly depend on pipeline gathering and transportation. Although the pipeline construction is high in one-time investment, the pipeline construction has the advantages of large transportation volume after production, long service life, less secondary pollution, small influence of objective conditions and the like. However, due to the natural properties of the fluid, besides the easiness in pipeline transportation, if leakage or overflow occurs, the difficulty in collection and decontamination is higher, petroleum and natural gas are flammable and explosive, the natural environment is seriously polluted, the life and property safety is seriously threatened, and compared with other transportation modes, the accident risk of the oil and gas pipeline is higher, so that the credible accident risk occurrence probability must be reduced. That is, in the process of objectively requiring pipeline manufacturing and pipeline laying construction, quality control needs to be enhanced. In addition to the quality of the weld, the quality of the pig and the quality of corrosion protection are important factors that affect the life of the pipeline. The rust (main component iron oxide) is loose and is easier to absorb water, and if the rust is not cleaned thoroughly, the corrosion is accelerated, so whether the rust is cleaned up or not is one of the important reasons for influencing the later corrosion speed. The pipe cleaning method has the advantages that the derusting and sand blasting technology for the outer wall of the pipeline can achieve a good effect, the inner wall is small in space, large in surface area and inconvenient to operate, pipe cleaning devices such as steel brushes and foams are generally adopted to achieve the pipe cleaning effect through friction in a back-and-forth movement for one time, the efficiency is extremely low, and a large amount of solid wastes such as waste foam balls can be generated.

Therefore, the efficient pipe cleaner greatly improves the construction progress and the service life of the pipeline, the main power source of the existing pipe cleaning technology is to push the pipe cleaner to move back and forth by fluid pressure provided by other equipment to scrape stains, the pipe cleaner is generally made of rubber or sponge and other plastic materials, the outer diameter of the pipe cleaner is usually larger than 3% -5% of the inner diameter of the pipeline, and therefore the pipe cleaner is tightly combined with the pipe wall. The pipe cleaning technology has good cleaning effect on fluid or light-adhesion solid dirt and has many advantages in long-distance pipelines. However, the method is not ideal for high-adhesion solid substances such as iron rust, the area of single rust on the inner wall of the pipeline is small, the number of the single rust is large, the existing pipe cleaning technology is utilized, power is often insufficient, time consumption is long, rust is not thoroughly cleaned, only a foam pipe cleaner is used for cleaning, 34 welded pipes are taken as an example, a new foam pipe cleaner is replaced after each cleaning, and the standard is reached after about 50 times of cleaning. The pipeline is from leaving the factory to the welding construction, generally all exceeds a month, if technologies such as pipe bending, interior anticorrosion are considered, the idle time of the pipeline is longer, and pipeline construction is generally in farmland, forest zone, grassland and the like, the humidity of a temporary pipe piling field is high, the corrosion speed is faster, and therefore before welding and ditch backfilling, the inner wall of the pipeline can be rusted to different degrees. If rust cleaning is not needed, direct welding, ditch descending, backfilling or hydraulic pressure testing are carried out, the humidity is high after the pressure testing, and the subsequent cleaning is a huge project, consumes time and labor, generates a large amount of solid wastes, and is neither environment-friendly nor economical. And once cathodic protection breaks down, under the condition that there is rust, the pipeline can corrode rapidly, greatly reduced the life of pipeline, increased the emergence probability of pipeline operation risk. If the motor replaces aerodynamic force and the transverse high-speed rotation replaces longitudinal back-and-forth movement, the cleaning effect is greatly improved. Each pipe is cleaned before welding and grooving, rust stains are removed, corrosion is slowed down, and the workload of cleaning the pipes is reduced.

Disclosure of Invention

The invention provides a symmetrical mechanical high-speed pipe cleaner and a using method thereof, aiming at solving the problems that the removal of high-adhesion solid rust in the existing pipeline is not thorough and long in time consumption.

A symmetrical mechanical high-speed pipe cleaner comprises a first section cleaning disc, a tail section cleaning disc, a first section cleaning power device, a tail section cleaning power device, a first section support, a middle section support, a tail section support, an axial movement power device, a thread scale adjusting rod and a movement wheel device;

the first section of cleaning disc comprises a first section of turntable, a first cleaning pipe brush, a first brush handle and first springs, wherein the four first springs are arranged along the circumferential array of the first section of turntable, the first springs are radially arranged along the first section of turntable, one end of each first spring is connected with the first section of turntable through a bolt, the other end of each first spring is connected with one end of the first brush handle, and the first cleaning pipe brush is arranged at the other end of the first brush handle;

the tail section cleaning disc comprises a tail section rotating disc, a second cleaning pipe brush, a second brush handle and second springs, wherein the four second springs are arranged along the circumferential array of the tail section rotating disc and are radially arranged along the tail section rotating disc, one end of each second spring is connected with the tail section rotating disc through a bolt, the other end of each second spring is connected with one end of the second brush handle, and the second cleaning pipe brush is arranged at the other end of the second brush handle;

the moving wheel device comprises a split radial sliding bearing, a main shaft and a wheel, wherein the split radial sliding bearing comprises a bearing upper cover, a bearing lower cover, a first sliding bearing and a bearing base connecting rod; two ends of the main shaft are respectively provided with a split radial sliding bearing, and the two ends of the main shaft penetrate through a first sliding bearing of the split radial sliding bearing and are connected with the wheel through a flat key;

the first section support, the middle section support and the tail section support are sequentially connected, sleeves and threaded pipes are respectively arranged on two sides of the first section support and the tail section support, the sleeves are positioned on the lower portions of the first section support and the tail section support, and the threaded pipes are positioned on the upper portions of the first section support and the tail section support;

the upper end and the lower end of the thread scale adjusting rod are provided with threads with different turning directions;

a threaded scale adjusting rod is connected with the threaded pipe of the first section of support in a threaded manner, a moving wheel device is arranged at the bottom of the first section of support, a bearing base connecting rod of the moving wheel device upwards penetrates through a sleeve of the first section of support and is in threaded connection with the lower end of the threaded scale adjusting rod, a moving belt wheel is arranged on a main shaft arranged at the bottom of the first section of support, and the main shaft is in flat key connection with the moving belt wheel;

the first-section cleaning power device is fixed in the first-section support and comprises a cycloidal pin wheel speed reducer and a first motor, the cycloidal pin wheel speed reducer is connected with a motor shaft of the first motor, and an output shaft of the cycloidal pin wheel speed reducer penetrates out of one end of the first-section support and is connected with a center plain key of a first-section cleaning disc;

the axial motion power device is fixed on the middle section support and comprises a worm gear and worm speed reducer, a driving belt wheel, a third motor and a triangular belt, the third motor is fixed inside the middle section support, a motor shaft of the third motor downwards penetrates out of the middle section support and is connected with the worm gear and worm speed reducer through a flat key, an output shaft of the worm gear and worm speed reducer is connected with the driving belt wheel through the flat key, and the driving belt wheel is in transmission connection with the motion belt wheel through the triangular belt;

a threaded pipe of the tail section support is internally threaded with a threaded scale adjusting rod, the bottom of the tail section support is provided with a moving wheel device, and a bearing base connecting rod of the moving wheel device upwards penetrates through a sleeve of the tail section support and is in threaded connection with the lower end of the threaded scale adjusting rod;

the tail section cleaning power device is fixed in the tail section support and comprises a second motor and a parallel shaft helical gear reducer, the parallel shaft helical gear reducer is connected with a motor shaft of the second motor, a hollow transmission shaft of the parallel shaft helical gear reducer is in flat key connection with the tail section transmission shaft, one end of the tail section transmission shaft, which penetrates out of the tail section support, is in flat key connection with the center of the tail section cleaning disc, a second sliding bearing is arranged between the tail section transmission shaft and the tail section support, a cable sleeve is arranged at the center of the tail section support along the length direction, and one end of the cable sleeve sequentially penetrates through the hollow transmission shaft of the parallel shaft helical gear reducer, the tail section transmission shaft and the center of the tail section cleaning disc;

the rotation directions of the first section of the cleaning disc and the tail section of the cleaning disc are opposite;

the cables of the first motor, the second motor and the third motor all penetrate out of the cable sleeve.

The use method of the symmetrical mechanical high-speed pipe cleaner is carried out according to the following steps:

firstly, setting the radius of a cleaning pipe as R, the thickness of a wheel as D, the distance between two wheels as L, setting the distance between the central axis of a pipe cleaner and the axis of a main shaft as D when the scale of a thread scale adjusting rod is 0, setting the length adjusted by the thread scale adjusting rod as h/2, and adjusting the length of the pipe cleaner according to a formula

Obtaining the adjusting distance of the thread scale adjusting rod;

adjusting the working radius R of the first pipe cleaning brush and the second pipe cleaning brush to enable R-R to be 3-6 mm, and synchronously adjusting the scales of a thread scale adjusting rod of the symmetrical mechanical high-speed pipe cleaner;

enabling the first-section cleaning disc to enter the cleaning pipe through manual operation until the wheel arranged on the first-section support enters the pipe orifice, controlling a third motor to enable a symmetrical mechanical high-speed pipe cleaner to enter the cleaning pipe until the wheel arranged on the tail-section support enters the cleaning pipe, stopping the third motor, enabling the tail-section cleaning disc to enter the cleaning pipe through manual operation, and finally checking a cable;

fourthly, starting the first motor and the second motor to carry out pigging, and then adjusting the axial movement speed of the third motor;

stopping the third motor before the first-section cleaning disc reaches the pipe orifice of the cleaning pipe, and controlling the third motor to enable the symmetrical mechanical high-speed pipe cleaner to move reversely after the pipe cleaner is stable;

and sixthly, stopping the first motor and the second motor before the tail section cleaning disc reaches the mouth of the cleaning pipe, keeping the balance of the symmetrical mechanical high-speed pipe cleaner by manual operation before the wheels arranged on the tail section support reach the mouth of the cleaning pipe, stopping the third motor before the wheels arranged on the head section support reach the mouth of the cleaning pipe, and finally finishing the outlet pipe of the symmetrical mechanical high-speed pipe cleaner by manual operation.

The principle is as follows: firstly, the unstable problem of cleaning pig during operation marcing forward in the pipeline has been solved through the mode of symmetry carousel, if the cleaning pig is only a carousel, high-speed rotatory carousel can exert the turning moment to cleaning pig ware body and cause the ware body to rotate, lead to the decline of the frictional force that the cleaning pig action wheel receives (the wheel of the moving wheel device that is close to the cleaning pig head is established to the action wheel), thereby axial motion is obstructed, even the ware body is blocked, for solving this difficulty, at cleaning pig two respectively symmetry installation carousel and steel brush, two 11 kW's of symmetry installation power supply as two carousel rotations is simultaneously, two carousel rotation opposite directions, two carousels are balanced each other to the turning moment of ware body, this just has solved the balanced problem that the cleaning pig gos forward, increase the carousel and mean equally increase a set of steel brush, work efficiency of such is showing and is improving.

Then, since the two ends of the pig are provided with the turntables, another difficulty is introduced, namely the problem of traction of the cable. A parallel shaft helical gear reducer is arranged between the second motor and the tail section cleaning disc, the parallel shaft helical gear reducer transmits power to the tail section cleaning disc through a tail section transmission shaft, and a cable penetrates through a hollow transmission shaft of the parallel shaft helical gear reducer and is led out to be connected with a power supply. However, the transmission main shaft rotates at a high speed, and if a cable passes through the hollow transmission main shaft without any measures, the cable can be quickly damaged and cannot be used, so that a steel cable sleeve is added into the hollow transmission shaft of the parallel shaft helical gear reducer and is finally fixed to the tail section bracket through the supporting handle. If the rotating disc at the other end of the pipe cleaner is directly connected with the motor, the requirement on the quality of a transmission shaft is strict, and meanwhile, the rotating speeds of the rotating discs at the two ends are not coordinated, so that the pipe cleaner body is unbalanced, and the significance of a symmetrical rotating disc is lost, and therefore, a cycloid pinwheel speed reducer is arranged between the cleaning disc at the first section of the pipe cleaner and the first motor. The cycloidal pin wheel speed reducer has the advantages of small volume, stable operation, low noise and the like, has low accident rate, is easy to maintain, and is very suitable for accumulated and dirty mechanical appliances such as a pipe cleaner.

And thirdly, a third motor is installed, the third motor is axial motion power of the pipe cleaner, the third motor is controlled by a frequency converter, so that the pipe cleaner can move forwards and backwards in the pipeline (one end of a cable is specified to be led out, namely the end of the helical gear reducer with the parallel shaft is the tail section of the pipe cleaner, and one end of the cycloidal pin gear reducer is the first section), and the motion speed is adjusted according to the stain degree of the pipeline. And the third motor is connected with the driving belt wheel through a direct-connection type worm and gear reducer and finally is driven to the moving belt wheel through a triangular belt to push the pipe cleaner to move axially. Compared with the main advantages of a chain, the V-belt has the advantages of no need of lubrication, good dust resistance, good elasticity of the belt, capability of buffering impact and vibration in work and stable motion. Even when the pipeline is seriously deformed and the load is overlarge, the belt can slip to prevent other parts from being damaged, and the safety protection effect is achieved. And the third motor, the worm and gear reducer, the driving belt wheel and the V-belt form an axial power system of the pipe cleaner. The moving system of the pipe cleaner is composed of two groups of moving wheel devices, and the pipe cleaner is directly connected with the angle steel structure through a thread scale adjusting rod. The main shaft and the wheel are arranged on one side of an angle steel face close to the gravity center of the pipe cleaner, namely on the opposite side of the second motor, so that the parallel shaft helical gear reducer and the protrusion of the second motor can prevent the working diameter of the pipe cleaner from being adjusted, and the design can save time and labor when the pipe cleaner enters and exits a pipeline.

Finally, for making the dredging pipe ware all usable to the pipeline of different internal diameters, the connection between carousel and the steel brush adopts radial spring formula floating connecting rod to connect, and the mode of axial fixed connection, through the working diameter of the adjustable dredging pipe ware of spring and bolt, if touch the position that the pipeline warp, the spring compression becomes urine and can pass through smoothly, can not influence dredging pipe effect or block the dredging pipe ware because of the internal diameter changes.

The main shaft and the wheels are connected with the angle steel frames of the first section support and the tail section support through split radial sliding bearings, the pipe cleaner can adapt to pipelines with any design range inner diameter in view of the fact that the thread scale adjusting rods adjust the self-adaptive diameter of the pipe cleaner through threads, and needed adjusting parameters can be obtained easily through the design parameters of the pipe cleaner and the cleaning pipe in the design, and the adjusting parameters can be adjusted easily.

The whole design adopts a three-section design, the pipe cleaner consists of a head section, a tail section and a middle section, the head section comprises a first section cleaning disc, a cycloid pinwheel speed reducer, a first motor, a first section bracket, a thread scale adjusting rod, a moving belt wheel and a moving wheel device, and the tail section comprises a parallel shaft helical gear speed reducer, a tail section cleaning disc, a second motor, a thread scale adjusting rod, a tail section bracket and a moving wheel device; the middle section consists of a third motor, a worm and gear reducer and a driving belt wheel; through the connection of the triangular steel structures, the pipe cleaner is convenient and simple to assemble, disassemble and maintain, is easy to transport, and is very convenient to use in pipeline construction sites in various complex terrain environments.

The invention has the beneficial effects that: the invention solves the problem that the pipe cleaner rotates due to unbalance in the pipe cleaning process by using the symmetrical rotary tables, greatly reduces the probability that the pipe cleaner is clamped in the pipeline, and ensures that the pipe cleaner is easily clamped in the return stroke by settling the pipe cleaner in the form of powder ash after stains on the inner wall of the pipeline are cleaned. The hollow transmission shaft of the parallel shaft helical gear speed reducer is utilized to solve the traction problem of the power cable of the pipe cleaner, and the abrasion problem of the cable is avoided by adding a cable sleeve. The elastic steel brush connection increases the friction force between the steel brush and the pipe wall, and enhances the self-adaptability of the pipe cleaner in the cleaning process. The triangular belt is used as the transmission device of the axial movement of the pipe cleaner, so that the influence of dust on the transmission device is reduced, the maintenance frequency of the pipe cleaner is reduced, and the pipe cleaning efficiency is improved. Utilize the design of bearing base connecting rod and double round axle for the strong adaptability of pipeline internal diameter is cleaned to the dredging pipe ware, easily adjusts, utilizes the design of symmetry formula double round, and the wheel of dredging pipe ware no longer with the contact of the lowest of pipeline elevation, leaves the heap dirt space in pipeline inside, fine solution because the dirt piles up and the problem of card. Therefore, the dry type pipeline cleaner is easy to operate and good in pipe cleaning efficiency, the inner diameter of the pipeline suitable for the pipeline cleaner is R280 mm-R400 mm (a brush handle and an adjusting rod with larger size can be arranged according to requirements), and after the dry type pipeline cleaner is cleaned by the symmetrical mechanical high-speed pipeline cleaner, the workload of pipe cleaning of a foam pipeline cleaner in the later period is greatly reduced. Taking 34 welded pipeline sections as an example, changing new foam pig after every clearance, only need about 50 times with the up-to-standard needs of foam pig clearance, after mechanical type pig cleans, then utilize the foam pig to clean about 10 times and can reach standard, clean efficiency and improve and reach 80%.

Drawings

FIG. 1 is a perspective view of a first stage cleaning pan of the present invention;

FIG. 2 is a front view of the first stage cleaning pan of the present invention;

FIG. 3 is a perspective view of the tail section cleaning pan of the present invention;

FIG. 4 is a front view of the tail section cleaning disk of the present invention;

FIG. 5 is an assembled perspective view of the moving wheel assembly and the moving pulley of the present invention;

FIG. 6 is a sectional view of the assembly of the moving wheel assembly with the moving pulley of the present invention;

FIG. 7 is a cross-sectional view of a bearing mount connecting rod of the present invention;

FIG. 8 is a perspective view of the first sweeping power assembly of the present invention;

FIG. 9 is a side view of the first sweeping power unit of the present invention;

FIG. 10 is an assembled perspective view of the first stage bracket, the first stage cleaning power device, the first stage cleaning disc, the moving wheel device and the threaded scale adjustment rod of the present invention;

FIG. 11 is an assembled bottom view of the first stage bracket, the first stage cleaning power device, the first stage cleaning disk, the moving wheel device and the threaded scale adjustment rod of the present invention;

FIG. 12 is an assembly view of the worm gear reducer and drive pulley of the present invention;

FIG. 13 is an assembly view of the axial motion power plant and mid-section support of the present invention;

FIG. 14 is a bottom view of FIG. 13;

FIG. 15 is a perspective view of the aft section sweeping power plant of the present invention;

FIG. 16 is a side view of the tail section sweeping power plant of the present invention;

FIG. 17 is a perspective view of a tail section drive shaft of the present invention;

FIG. 18 is a cross-sectional view of a tail section drive shaft of the present invention;

FIG. 19 is an assembly view of the tail section bracket and cable sleeve of the present invention;

FIG. 20 is an assembled perspective view of a tail section support, a tail section cleaning power device, a tail section cleaning disc, a moving wheel device, a cable sleeve and a threaded scale adjustment rod of the present invention;

FIG. 21 is an assembled side view of a tail section support, a tail section cleaning power device, a tail section cleaning disc, a moving wheel device, a cable sleeve and a threaded scale adjustment rod of the present invention;

FIG. 22 is an enlarged view of area A of FIG. 21;

FIG. 23 is a schematic structural view of a symmetrical mechanical high speed pig of the present invention;

fig. 24 is a bottom view of fig. 23.

Detailed Description

The first embodiment is as follows: the embodiment is specifically described with reference to fig. 1 to 24, and the embodiment is a symmetrical mechanical high-speed pipe cleaner which comprises a first section cleaning disc 1-1, a tail section cleaning disc 1-2, a first section cleaning power device 2, a tail section cleaning power device 3, a first section bracket 4-1, a middle section bracket 4-2, a tail section bracket 4-3, an axial movement power device 6, a thread scale adjusting rod 8 and a moving wheel device 9;

the first section of the cleaning disc 1-1 comprises a first section of a turntable 101, a first cleaning pipe brush 102, a first brush handle 103 and a first spring 105, wherein four first springs 105 are arranged along the circumferential array of the first section of the turntable 101, the first spring 105 is radially arranged along the first section of the turntable 101, one end of the first spring 105 is connected with the first section of the turntable 101 through a bolt, the other end of the first spring 105 is connected with one end of the first brush handle 103, and the other end of the first brush handle 103 is provided with the first cleaning pipe brush 102;

the tail section cleaning disc 1-2 comprises a tail section turntable 106, a second cleaning pipe brush 107, a second brush holder 108 and a second spring 109, wherein four second springs 109 are arranged along the circumference of the tail section turntable 106 in an array mode, the second springs 109 are radially arranged along the tail section turntable 106, one end of each second spring 109 is connected with the tail section turntable 106 through a bolt, the other end of each second spring 109 is connected with one end of the second brush holder 108, and the other end of each second brush holder 108 is provided with the second cleaning pipe brush 107;

the moving wheel device 9 comprises a split radial sliding bearing 7, a main shaft 904 and a wheel 905, wherein the split radial sliding bearing 7 comprises an upper bearing cover 702, a lower bearing cover 703, a first sliding bearing 704 and a bearing base connecting rod 707, the first sliding bearing 704 is arranged between the upper bearing cover 702 and the lower bearing cover 703, and the upper end of the upper bearing cover 702 is provided with the bearing base connecting rod 707; two ends of the main shaft 904 are respectively provided with a split radial sliding bearing 7, and two ends of the main shaft 904 penetrate through a first sliding bearing 704 of the split radial sliding bearing 7 and are connected with a wheel 905 through a flat key;

the first section of support 4-1, the middle section of support 4-2 and the tail section of support 4-3 are connected in sequence, and the first section of support 4-1 and the two sides of the tail section of support 4-3 are respectively provided with a sleeve 403 and a threaded pipe 404, the sleeve 403 is positioned at the lower part of the first section of support 4-1 and the lower part of the tail section of support 4-3, and the threaded pipe 404 is positioned at the upper part of the first section of support 4-1 and the upper part of the tail section of support 4-3;

the upper end and the lower end of the thread scale adjusting rod 8 are provided with threads with different turning directions;

a threaded pipe 404 of the first section of support 4-1 is internally threaded with a threaded scale adjusting rod 8, the bottom of the first section of support 4-1 is provided with a moving wheel device 9, a bearing base connecting rod 707 of the moving wheel device 9 upwards passes through a sleeve 403 of the first section of support 4-1 and is in threaded connection with the lower end of the threaded scale adjusting rod 8, a main shaft 904 arranged at the bottom of the first section of support 4-1 is provided with a moving belt wheel 903, and the main shaft 904 is in flat key connection with the moving belt wheel 903;

the first-section cleaning power device 2 is fixed in the first-section support 4-1, the first-section cleaning power device 2 comprises a cycloid pin gear speed reducer 201 and a first motor 202, the cycloid pin gear speed reducer 201 is connected with a motor shaft of the first motor 202, and an output shaft of the cycloid pin gear speed reducer 201 penetrates through one end of the first-section support 4-1 and is connected with a center plain key of a first-section cleaning disc 1-1;

the axial motion power device 6 is fixed on the middle section support 4-2, the axial motion power device 6 comprises a worm gear reducer 601, a driving belt wheel 602, a third motor 605 and a triangular belt, the third motor 605 is fixed inside the middle section support 4-2, a motor shaft of the third motor 605 downwards penetrates out of the middle section support 4-2 and is in flat key connection with the worm gear reducer 601, an output shaft of the worm gear reducer 601 is connected with the driving belt wheel 602 through a flat key, and the driving belt wheel 602 is in transmission connection with the motion belt wheel 903 through the triangular belt;

a threaded pipe 404 of the tail section support 4-3 is internally threaded with a threaded scale adjusting rod 8, the bottom of the tail section support 4-3 is provided with a moving wheel device 9, and a bearing base connecting rod 707 of the moving wheel device 9 upwards passes through a sleeve 403 of the tail section support 4-3 and is in threaded connection with the lower end of the threaded scale adjusting rod 8;

the tail section cleaning power device 3 is fixed in a tail section support 4-3, the tail section cleaning power device 3 comprises a second motor 301 and a parallel shaft helical gear reducer 302, the parallel shaft helical gear reducer 302 is connected with a motor shaft of the second motor 301, a hollow transmission shaft of the parallel shaft helical gear reducer 302 is in flat key connection with a tail section transmission shaft 5, one end of the tail section transmission shaft 5, which penetrates out of the tail section support 4-3, is in flat key connection with the center of a tail section cleaning disc 1-2, a second sliding bearing 1110 is arranged between the tail section transmission shaft 5 and the tail section support 4-3, a cable sleeve 402 is arranged at the center of the tail section support 4-3 along the length direction, and one end of the cable sleeve 402 sequentially penetrates through the hollow transmission shaft of the parallel shaft helical gear reducer 302, the tail section transmission shaft 5 and the center of the tail section cleaning disc 1-2;

the rotation directions of the first section of the cleaning disc 1-1 and the tail section of the cleaning disc 1-2 are opposite;

the cables of the first motor 202, the second motor 301 and the third motor 605 all penetrate out of the cable sleeve 402.

The first cleaning brush 102 and the second cleaning brush 107 can be detached and replaced.

For the pipe cleaner with the single rotating disc and the single moving wheel, due to the fact that the rotating disc and the steel brush are not symmetrical completely and the rotating disc rotates at a high speed to bring a rotating moment into the pipe cleaner, the pipe cleaner rotates in a pipeline after long-distance movement and is unbalanced, the moving wheel is not enough in bearing and is clamped in the pipeline finally, the axial movement of the pipe cleaner in the pipeline is transmitted to the moving wheel through the gravity of the pipe cleaner body, the moving wheel generates pressure on the pipeline, the wheel shaft is pushed to roll through the friction force of the pipe wall and the moving wheel finally, if the cleaner body rotates, the friction force is reduced, and the pipe cleaner cannot axially move in the pipeline finally due to the fact that the power is insufficient.

For a pipe cleaner with the mass of m, the pipe cleaner moves in a pipeline with the inner wall having a dynamic friction factor of mu, and after the pipe cleaner rotates an angle alpha, a moving wheel bears a supporting force F of the pipe body to the moving wheel_NIs composed of

The motion wheel of the pipe cleaner is subjected to a frictional force F_μIs composed of

F_μ＝μF_N(2)

The angle of rotation alpha reaches the theoretical angle

When the supporting force of the power wheel on the pipeline is 0, namely the friction force is 0, the pipe cleaner cannot move axially, however, the practical experience shows that alpha reaches the aim

Before (reach)

When the temperature of the water is higher than the set temperature,

) So that the user can not move due to insufficient power. Because m' and cos alpha are doubled as the alpha angle increasesThe overlap is reduced, so the power F_μIt will quickly descend and the pig will not move.

Therefore, the invention designs a symmetrical pipe cleaner, two sets of motors and rotating discs, two sets of symmetrical wheel shafts are arranged on the bearing side, the rotating discs are symmetrical and have opposite rotating directions, the rotating distances of the two rotating discs to the pipe cleaner body are mutually offset, so the pipe cleaner can not rotate, even though the two ends of the pipe cleaner are unbalanced and asymmetrically rotate in a small range, because of the design of two sets of symmetrical moving wheel devices 9, the bearing of one set of two wheels is equal to the length of the bearing, the influence on the friction force between the wheels and the pipeline is very small, the design not only solves a factor of the pipe cleaner being blocked, but also increases the number of steel brushes of the pipe cleaner, and ensures that the pipe cleaner becomes more. The mechanical pipe cleaner is a dry mechanical friction pipe cleaner, dirt is deposited at the bottom of a pipeline in the form of dust, if the mechanical pipe cleaner is designed in a single wheel mode, the effective inner diameter of the pipeline is easily reduced due to excessive deposition of the dust, and the pipe cleaner is mainly used for replacing a dry pipe cleaner by a wet pipe cleaner, but the greatest defects of the wet pipe cleaner are that the required round-trip frequency is high, a large number of foam pipe cleaners are required, and the consumption is high. The design of symmetry formula shaft leaves the dust storage space for being cleared up the pipeline, and the design of symmetry formula carousel also has certain reduction to the quantity of deposit dust simultaneously, and the pig is all that the steel brush cleans immediately on the way round and round, calculates the settling time and the wheel motion time of spot particulate matter, and the settling velocity of particulate matter is calculated according to the Stokes formula:

wherein d is_sAnd ρ_sDiameter and density of the particles, eta and rho are viscosity coefficients and densities of air, respectively, in a scale of 1.87 x 10^-5Pa · s and 1.25X 10^-3g/cm³Taking values, g is the acceleration of gravity, the diameter of the particles is 50 mu m, and the density is 30g/cm³The v is 21.8cm/s, the axial movement speed of the pig is about 20cm/s, the distance between the steel brush and the wheel is about 20cm, and the settling time of the particles is about 2.8s for a pipe with a nominal diameter of 610mm, for example, so that the wheel penetrates through the pipeIn the past, partial particles are not settled again, and a dust settling space is reserved by the symmetrical double-wheel design, so that the pipe cleaner cannot be blocked due to the settlement of dirt.

For pipelines with different inner diameters, the inner diameter of the steel brush system needs to be adjusted before the pipeline cleaner works, the working radius of the eight steel brushes is easy to adjust, and only corresponding nuts need to be adjusted. The adjustment of the moving wheel shaft needs simple calculation, the radius of the cleaning pipe is set as R, the thickness of the wheel is set as D, the distance between two wheels is set as L, and when the scale of the thread scale adjusting rod 8 is set as 0, the distance between the central axis of the pipe cleaner and the axis of the main shaft 904 is set as D. The length h/2 of the thread scale adjusting rod 8 needing to be adjusted is as follows from simple triangle knowledge

Because the screw scale adjusting rod 8 is simultaneously in and out between the bearing base connecting rod 707 and the threaded pipe 404, the adjusting scale of the screw scale adjusting rod 8 is h/2.

Clear being connected between tub brush and the carousel in this embodiment adopts the spring to float and is connected, and when this kind of design guaranteed that the steel brush has enough radial pressure to the pipe wall, can not be because of the brush holder is too long to cause the dredging pipe ware to be obstructed when cleaning cold return bend to this kind of design can change the elastic deformation of spring because of intraductal spot thickness, and then to cleaning pressure automatically regulated, finally apply different pressure to the spot of different thickness and clean.

The cycloidal pin gear speed reducer 201 in the embodiment has the main function of coordinating and stabilizing the rotating speed of the cleaning disc 1-1 at the first section of the pipe cleaner.

The characteristic that utilizes the hollow transmission shaft of parallel shaft helical gear reduction gear 302 among this concrete implementation can solve the cable conductor passageway problem, and the rotational speed of adjusting the pipeline cleaner both ends carousel system simultaneously is unanimous, reaches the balance of pipeline cleaner during operation rotation distance.

In the embodiment, the tail section support 4-3 mainly supports the parallel shaft helical gear reducer 302 and the second motor 301, fixes the cable sleeve 402 for protecting the cable, and fixes the moving wheel device 9 through the thread scale adjusting rod 8.

The specific implementation method adopts the tail section transmission shaft 5 between the parallel shaft helical gear reducer 302 and the tail section cleaning disc 1-2, and the transmission shaft of the parallel shaft helical gear reducer 302 is too short to meet the fixation and transmission of the cleaning tube cleaner tail section cleaning disc 1-2.

In the embodiment, the worm gear reducer 601 reduces the output rotating speed of the third motor 605, changes the direction of the output transmission torque of the third motor 605, and then the installation mode of the third motor 605 can effectively reduce the volume of the pipe cleaning machine, thereby facilitating the movement and increasing the maneuverability of the pipe cleaning machine.

The split radial sliding bearing 7 in this embodiment is a connecting bridge between the main shaft 904 and the wheel 905 and the angle steel of the pipe cleaner bracket, and the working inner diameter of the pipe cleaner is adjusted by the thread scale adjusting rod 8.

The screw thread scale adjusting rod 8 in this concrete implementation side adopts the section body of cutting two sword to the cylinder symmetry, then opens the form design of screw thread, and the first effect of screw thread scale adjusting rod 8 will be fixed in the triangle steel construction to open radial sliding bearing 7, and the second effect utilizes the working diameter of screw thread adjustment dredging pipe ware, and screw thread scale adjusting rod 8 is through the different regulation effects of realizing going into with going out between support angle steel and open radial sliding bearing 7 simultaneously of the soon of two head threads. The adjusting mode of the thread ensures that the working diameter of the pipe cleaner is continuous, the pipe cleaner can adapt to pipelines with different inner diameters, and the cylindrical cutting body for cutting the two cutters is easy to adjust.

In the specific embodiment, the wheel shaft of the first section support 4-1 of the pipe cleaner is used as the driving shaft, so that the design is more favorable for the pipe cleaner to enter and exit the pipeline, and the time and the labor are saved. Compared with gear transmission, the driving wheel shaft adopts the triangular belt and the belt wheel transmission, and has the advantages of less lubrication and good dust resistance. The dry-type dredging pipe ware can produce a large amount of particulate matters and dust, if adopt chain gear, need lubricate, and emollient easily adsorbs the dust, and the dust of enrichment finally becomes fatlute, and a large amount of fatlutes can bring huge resistance for advancing of dredging pipe ware, and the process of cleaing away fatlute is power consumption consuming time, the work efficiency of greatly reduced dredging pipe ware, this kind of trouble of greatly reduced is gone out in the band pulley transmission.

In the embodiment, the connection mode of the cycloidal pin gear speed reducer 201 and the first section of the cleaning disc 1-1 is a screw fixing mode, and the fixing mode can bear larger axial force, so that the requirement of larger working strength of the first section of the pipe cleaner is met.

The parallel shaft helical gear reducer 302 and the tail section cleaning disc 1-2 adopt a nut fixing mode, the fatigue strength of the transmission shaft can be reduced by the fixing mode, and the service life of the hollow transmission shaft is prolonged.

The rotation of carousel and the axial motion of pig are controlled respectively by the mode of difference in this embodiment, and first motor 202, second motor 301 are by ordinary three-phase electric switch control power, and third motor 605 power is controlled by frequency conversion controller, realizes the pig along axle two-way motion from this, and the power of pipe cleaning machine is three-phase alternating current.

The advantages of this embodiment: this embodiment utilizes the symmetry formula carousel to solve the unbalance and the rotation of dredging pipe in-process dredging pipe ware, greatly reduced the dredging pipe ware by the probability inside the pipeline, subside to the pipeline with the form of powder ash after the clearance of pipeline inner wall spot in, this makes the dredging pipe ware block very easily in the return stroke, utilizes the two carousel device of symmetry formula to solve this kind of problem. The use of the hollow drive shaft of the parallel axis helical gear reducer 302 solves the traction problem of the pig power cable and avoids the problem of cable wear by adding the form of the cable sleeve 402. The elastic steel brush connection increases the friction force between the steel brush and the pipe wall, and enhances the self-adaptability of the pipe cleaner in the cleaning process. The triangular belt is used as the transmission device of the axial movement of the pipe cleaner, so that the influence of dust on the transmission device is reduced, the maintenance frequency of the pipe cleaner is reduced, and the pipe cleaning efficiency is improved. Utilize the design of bearing base connecting rod 707 and double round axle for the strong adaptability of pipeline internal diameter is cleaned to the pig, easily adjusts, utilizes the design of symmetry formula double round, and the wheel 905 of pig no longer contacts with the lowest of pipeline elevation, leaves the heap dirt space in pipeline inside, fine solution because the dirty dirt piles up the problem of card. Therefore, the dry type pipeline cleaner is easy to operate and good in pipe cleaning efficiency, the inner diameter of the pipeline suitable for the pipeline cleaner is R280 mm-R400 mm (a brush handle and an adjusting rod with larger size can be arranged as required), and after the dry type pipeline cleaner is cleaned by the symmetrical mechanical high-speed pipeline cleaner, the workload of pipe cleaning of the foam pipeline cleaner in the later period is greatly reduced. Taking 34 welded pipeline sections as an example, changing new foam pig after every clearance, only need about 50 times with the up-to-standard needs of foam pig clearance, after mechanical type pig cleans, then utilize the foam pig to clean about 10 times and can reach standard, clean efficiency and improve and reach 80%.

The second embodiment is as follows: the present embodiment is different from the first embodiment in that: two sides of the moving belt pulley 903 are respectively provided with a shaft elastic retainer ring. The rest is the same as the first embodiment.

The third concrete implementation mode: this embodiment is different from the first or second embodiment in that: two sides of the driving pulley 602 are respectively provided with a shaft elastic collar. The other is the same as in the first or second embodiment.

The fourth concrete implementation mode: the present embodiment is described specifically with reference to fig. 7, and is different from the first to third embodiments in that: the first sliding bearing 704 is filled with lubricating oil through a joint type pressure filling oil cup 708. The others are the same as the first to third embodiments.

The fifth concrete implementation mode: the present embodiment is described specifically with reference to fig. 22, and is different from one of the first to fourth embodiments in that: sliding bearing end covers 1108 are arranged on two sides of the second sliding bearing 1110. The rest is the same as the first to fourth embodiments.

The sixth specific implementation mode: the present embodiment is described specifically with reference to fig. 22, and is different from one of the first to fifth embodiments in that: the second sliding bearing 1110 is filled with lubricating oil through the straight-through type pressure filling oil cup 1117. The rest is the same as the first to fifth embodiments.

The seventh embodiment: the present embodiment is different from one of the first to sixth embodiments in that: the rated output power of the first motor 202 and the rated output power of the second motor 301 are both 11 kW; the rated output power of the third motor 605 is 7.5 kW. The others are the same as the first to sixth embodiments.

The specific implementation mode is eight: the present embodiment is different from the first to seventh embodiments in that: the cycloidal pin gear speed reducer 201 is an XWD-8155 series cycloidal pin gear speed reducer; the parallel shaft bevel gear reducer 302 is a TFAFA78 series parallel shaft bevel gear reducer; the model number of the worm gear reducer 601 is YVP-132S 2-4. The rest is the same as the first to seventh embodiments.

The specific implementation method nine: the application method of the symmetrical mechanical high-speed pipe cleaner is carried out according to the following steps:

firstly, when the radius of a cleaning pipe is R, the thickness of a wheel is D, the distance between two wheels is L, and the scale of a thread scale adjusting rod 8 is 0, the distance between the central axis of a pipe cleaner and the axis of a main shaft 904 is D, the length adjusted by the thread scale adjusting rod 8 is h/2, and the formula is adopted

Obtaining the adjusting distance of the thread scale adjusting rod 8;

adjusting the working radius R of the first pipe cleaning brush 102 and the second pipe cleaning brush 107 to enable R-R to be 3-6 mm, and synchronously adjusting the scales of the thread scale adjusting rod 8 of the symmetrical mechanical high-speed pipe cleaner;

thirdly, the first-section cleaning disc 1-1 enters a cleaning pipe through manual operation until the wheel 905 arranged on the first-section support 4-1 enters a pipe orifice, the third motor 605 is controlled to enable the symmetrical mechanical high-speed pipe cleaner to enter the cleaning pipe until the wheel 905 arranged on the tail-section support 4-3 enters the cleaning pipe, the third motor 605 is stopped, the tail-section cleaning disc 1-2 enters the cleaning pipe through manual operation, and finally a cable is checked;

fourthly, starting the first motor 202 and the second motor 301 for pigging, and then adjusting the axial movement speed of the third motor 605;

fifthly, when the first-section cleaning disc 1-1 reaches the opening of the cleaning pipe, the third motor 605 is stopped, and after the pipe cleaner is stable, the third motor 605 is controlled to enable the symmetrical mechanical high-speed pipe cleaner to move reversely;

sixthly, stopping the first motor 202 and the second motor 301 before the tail section cleaning disc 1-2 reaches the mouth of the cleaning pipe, keeping the balance of the symmetrical mechanical high-speed pipe cleaner by manual operation before the wheels 905 arranged on the tail section support 4-3 reach the mouth of the cleaning pipe, stopping the third motor 605 before the wheels 905 arranged on the head section support 4-1 reach the mouth of the cleaning pipe, and finally finishing the outlet pipe of the symmetrical mechanical high-speed pipe cleaner by manual operation.

The following examples were used to demonstrate the beneficial effects of the present invention:

the first embodiment is as follows:

a symmetrical mechanical high-speed pipe cleaner comprises a first section cleaning disc 1-1, a tail section cleaning disc 1-2, a first section cleaning power device 2, a tail section cleaning power device 3, a first section support 4-1, a middle section support 4-2, a tail section support 4-3, an axial movement power device 6, a thread scale adjusting rod 8 and a movement wheel device 9;

Two sides of the moving belt pulley 903 are respectively provided with a shaft elastic retainer ring.

Two sides of the driving pulley 602 are respectively provided with a shaft elastic collar.

The first sliding bearing 704 is filled with lubricating oil through a joint type pressure filling oil cup 708.

Sliding bearing end covers 1108 are arranged on two sides of the second sliding bearing 1110.

The second sliding bearing 1110 is filled with lubricating oil through the straight-through type pressure filling oil cup 1117.

The first spring 105 and the second spring 109 are YB 2 multiplied by 12 multiplied by 80;

the cycloidal pin gear speed reducer 201 is an XWD-8155 series, and has rated output of 300 r/min;

the first motor 202 and the second motor 301 are Y160M-4, the power is 11kW, and the rotating speed is 1460 r/min;

the split radial sliding bearing 7 is JB/T2561-1991H 2030;

the parallel shaft helical gear speed reducer 302 is a TFAFA78 series, the speed reduction ratio is 4.3, and the rotating speed is 340 r/min;

the model of the worm gear reducer 601 is YVP-132S2-4, and the reduction ratio i is 25;

the output shaft of the worm gear worm reducer 601 is connected with the driving belt wheel 602 through a common flat key A type (6 multiplied by 14);

the bearing upper cover 702 is connected with the bearing lower cover 703 through a stud-B type (M5 multiplied by 16), and the bearing upper cover 702 is connected with the bearing base connecting rod 707 through an inner hexagonal socket head cap screw (M10 multiplied by 16) and a hexagon nut-C grade (M10);

the main shaft 904 is connected with the moving belt wheel 903 through a common flat key A type (6 multiplied by 14);

the two ends of the main shaft 904 are connected with wheels 905 through flat keys A type (5 multiplied by 10) and fixed through hexagonal nuts-C grade (M16).

The installation mode is as follows: the angle steel of the cycloidal pin gear speed reducer 201 and the first section of bracket 4-1 is fixed through four sets of hexagon nuts-C grade (M16) and hexagon socket head cap screws (M16 x 55), the first section of cleaning disc 1-1 and the output shaft of the cycloidal pin gear speed reducer 201 are bridged by adopting a common flat key-A type (14 x 9 x 60), and then the cycloidal pin gear speed reducer 201 is fixed through a flat washer-C grade and hexagon socket head cap screws (M20 x 40); the parallel shaft helical gear reducer 302 and the angle steel of the tail section bracket 4-3 are fixed by four sets of hexagon nuts-C grade (M16) and hexagon socket head cap screws (M16 x 55), the tail section cleaning disc 1-2 is connected with the parallel shaft helical gear reducer 302 through a tail section transmission shaft 5 shaft, the parallel shaft helical gear reducer 302 is connected with the tail section transmission shaft 5 through a common flat key-A type (14 multiplied by 9 multiplied by 40), the tail section transmission shaft 5 is bridged with the tail section cleaning disc 1-2 through a common flat key-A type (6 multiplied by 14), the tail section transmission shaft 5 is transited with angle steel of the tail section support 4-3 through a second sliding bearing 1110(40 multiplied by 50 multiplied by 40), the second sliding bearing 1110 is fixed through a cross-slot countersunk head screw-head lower head shoulder Z type (M6 multiplied by 11-Z1), and finally the tail section cleaning disc 1-2 is fixed through a round nut (M36 multiplied by 1.5).

The split radial sliding bearing 7 is fixed with the angle steel of the first section support 4-1 and the angle steel of the tail section support 4-3 through a thread scale adjusting rod 8, the adaptive diameter of the pipe cleaner is adjusted, the thread turning directions of the two ends of the adjusting rod are different, the thread scale adjusting rod 8 can simultaneously enter and exit between the bearing base connecting rod 707 and the angle steel when rotating, and the main shaft 904 is connected with the moving belt pulley 903 through a common flat key (6 multiplied by 14).

The third motor 605 and the angle steel of the middle section support 4-2 are fixed through four sets of hexagon nuts-C grade (M12) and inner hexagon socket head cap screws (M12 x 40), the worm gear reducer 601 and the angle steel of the middle section support 4-2 are fixed through four sets of hexagon nuts-C grade (M8) and inner hexagon socket head cap screws (M8 x 40), and the worm gear reducer 601 and the driving belt wheel 602 are driven through a common flat key (6 x 14). The third motor 605 regulates the motor to run in different directions through a frequency converter, so that the pig runs in two directions.

The pipeline cleaner adopts three sections, and each section is connected and fixed through four connecting angle steels, 32-sleeve hexagon socket head cap screws (M16 multiplied by 40) and hexagon nuts-C grade (M16).

Obtaining the adjusting distance of the thread scale adjusting rod 8;

After the symmetrical mechanical high-speed pipe cleaner cleans in the embodiment, the workload of cleaning the pipe by the foam pipe cleaner in the later period is greatly reduced. Taking 34 welded pipeline sections as an example, changing new foam pig after every clearance, only need about 50 times with the up-to-standard needs of foam pig clearance, after mechanical type pig cleans, then utilize the foam pig to clean about 10 times and can reach standard, clean efficiency and improve and reach 80%.

Claims

1. The utility model provides a high-speed pig of symmetry formula machinery which characterized in that: a symmetrical mechanical high-speed pipe cleaner comprises a first section cleaning disc (1-1), a tail section cleaning disc (1-2), a first section cleaning power device (2), a tail section cleaning power device (3), a first section support (4-1), a middle section support (4-2), a tail section support (4-3), an axial movement power device (6), a thread scale adjusting rod (8) and a moving wheel device (9);

the first section of cleaning disc (1-1) comprises a first section of turntable (101), a first cleaning pipe brush (102), a first brush handle (103) and first springs (105), wherein four first springs (105) are arranged along the circumferential array of the first section of turntable (101), the first springs (105) are radially arranged along the first section of turntable (101), one end of each first spring (105) is connected with the first section of turntable (101) through a bolt, the other end of each first spring (105) is connected with one end of the first brush handle (103), and the other end of each first brush handle (103) is provided with the first cleaning pipe brush (102);

the tail section cleaning disc (1-2) comprises a tail section turntable (106), a second cleaning pipe brush (107), a second brush holder (108) and a second spring (109), wherein four second springs (109) are arranged along the circumference of the tail section turntable (106) in an array mode, the second springs (109) are radially arranged along the tail section turntable (106), one end of each second spring (109) is connected with the tail section turntable (106) through a bolt, the other end of each second spring (109) is connected with one end of the second brush holder (108), and the other end of each second brush holder (108) is provided with the second cleaning pipe brush (107);

the moving wheel device (9) comprises a split radial sliding bearing (7), a main shaft (904) and a wheel (905), wherein the split radial sliding bearing (7) comprises a bearing upper cover (702), a bearing lower cover (703), a first sliding bearing (704) and a bearing base connecting rod (707), the first sliding bearing (704) is arranged between the bearing upper cover (702) and the bearing lower cover (703), and the upper end of the bearing upper cover (702) is provided with the bearing base connecting rod (707); two ends of the main shaft (904) are respectively provided with a split radial sliding bearing (7), and two ends of the main shaft (904) penetrate through a first sliding bearing (704) of the split radial sliding bearing (7) and are connected with a wheel (905) through a flat key;

the first section of support (4-1), the middle section of support (4-2) and the tail section of support (4-3) are sequentially connected, a sleeve (403) and a threaded pipe (404) are respectively arranged on two sides of the first section of support (4-1), a sleeve (403) and a threaded pipe (404) are respectively arranged on two sides of the tail section of support (4-3), the sleeve (403) is positioned on the lower portions of the first section of support (4-1) and the tail section of support (4-3), and the threaded pipe (404) is positioned on the upper portions of the first section of support (4-1) and the tail section of support (4-3);

the upper end and the lower end of the thread scale adjusting rod (8) are provided with threads with different turning directions;

a threaded pipe (404) of the first section of support (4-1) is connected with a threaded scale adjusting rod (8) in a threaded manner, a moving wheel device (9) is arranged at the bottom of the first section of support (4-1), a bearing base connecting rod (707) of the moving wheel device (9) upwards penetrates through a sleeve (403) of the first section of support (4-1) and is in threaded connection with the lower end of the threaded scale adjusting rod (8), a moving belt wheel (903) is arranged on a main shaft (904) arranged at the bottom of the first section of support (4-1), and the main shaft (904) is in flat key connection with the moving belt wheel (903);

the first-section cleaning power device (2) is fixed in the first-section support (4-1), the first-section cleaning power device (2) comprises a cycloidal pin wheel speed reducer (201) and a first motor (202), the cycloidal pin wheel speed reducer (201) is connected with a motor shaft of the first motor (202), and an output shaft of the cycloidal pin wheel speed reducer (201) penetrates out of one end of the first-section support (4-1) and is connected with a center plain key of the first-section cleaning disc (1-1);

the axial motion power device (6) is fixed on the middle section support (4-2), the axial motion power device (6) comprises a worm gear reducer (601), a driving belt wheel (602), a third motor (605) and a triangular belt, the third motor (605) is fixed in the middle section support (4-2), a motor shaft of the third motor (605) downwards penetrates out of the middle section support (4-2) and is connected with the worm gear reducer (601) through a flat key, an output shaft of the worm gear reducer (601) is connected with the driving belt wheel (602) through a flat key, and the driving belt wheel (602) is in transmission connection with the motion belt wheel (903) through the triangular belt;

a threaded pipe (404) of the tail section support (4-3) is connected with a threaded scale adjusting rod (8) in a threaded manner, the bottom of the tail section support (4-3) is provided with a moving wheel device (9), and a bearing base connecting rod (707) of the moving wheel device (9) upwards penetrates through a sleeve (403) of the tail section support (4-3) and is in threaded connection with the lower end of the threaded scale adjusting rod (8);

the tail section cleaning power device (3) is fixed in a tail section support (4-3), the tail section cleaning power device (3) comprises a second motor (301) and a parallel shaft helical gear reducer (302), the parallel shaft helical gear reducer (302) is connected with a motor shaft of the second motor (301), a hollow transmission shaft of the parallel shaft helical gear reducer (302) is in flat key connection with a tail section transmission shaft (5), one end of the tail section transmission shaft (5) penetrating out of the tail section support (4-3) is in flat key connection with the center of a tail section cleaning disc (1-2), a second sliding bearing (1110) is arranged between the tail section transmission shaft (5) and the tail section support (4-3), a cable sleeve (402) is arranged at the center of the tail section support (4-3) along the length direction, one end of the cable sleeve (402) sequentially penetrates through the hollow transmission shaft of the parallel shaft helical gear reducer (302), The centers of the tail section transmission shaft (5) and the tail section cleaning disc (1-2);

the rotation directions of the first section of cleaning disc (1-1) and the tail section of cleaning disc (1-2) are opposite;

the cables of the first motor (202), the second motor (301) and the third motor (605) all penetrate out of the cable sleeve (402).

2. A symmetrical mechanical high speed pig according to claim 1, wherein: two sides of the moving belt wheel (903) are respectively provided with a shaft elastic retainer ring.

3. A symmetrical mechanical high speed pig according to claim 1, wherein: two sides of the driving belt wheel (602) are respectively provided with a shaft elastic retainer ring.

4. A symmetrical mechanical high speed pig according to claim 1, wherein: the first sliding bearing (704) is filled with lubricating oil through a joint type pressure filling oil cup (708).

5. A symmetrical mechanical high speed pig according to claim 1, wherein: and sliding bearing end covers (1108) are arranged on two sides of the second sliding bearing (1110).

6. A symmetrical mechanical high speed pig according to claim 1, wherein: and the second sliding bearing (1110) is filled with lubricating oil through a straight-through type pressure filling oil cup (1117).

7. A symmetrical mechanical high speed pig according to claim 1, wherein: rated output power of the first motor (202) and rated output power of the second motor (301) are both 11 kW; the rated output power of the third motor (605) is 7.5 kW.

8. A symmetrical mechanical high speed pig according to claim 1, wherein: the cycloidal pin gear speed reducer (201) is an XWD-8155 series cycloidal pin gear speed reducer; the parallel shaft helical gear reducer (302) is a TFAFA78 series parallel shaft helical gear reducer; the model of the worm gear and worm reducer (601) is YVP-132S 2-4.

9. The method of using a symmetrical mechanical high speed pig according to claim 1, wherein: the use method of the symmetrical mechanical high-speed pipe cleaner is carried out according to the following steps:

firstly, when the radius of a cleaning pipe is R, the thickness of a wheel is D, the distance between two wheels is L, and the scale of a thread scale adjusting rod (8) is 0, the distance between the central axis of a pipe cleaner and the axis of a main shaft (904) is D, the length adjusted by the thread scale adjusting rod (8) is h/2, and the formula is adopted according to

Obtaining the adjusting distance of the thread scale adjusting rod (8);

adjusting the working radius R of the first pipe cleaning brush (102) and the second pipe cleaning brush (107) to enable R-R to be 3-6 mm, and synchronously adjusting the scales of a thread scale adjusting rod (8) of the symmetrical mechanical high-speed pipe cleaner;

thirdly, the first-section cleaning disc (1-1) enters a cleaning pipe through manual operation until the wheel (905) arranged on the first-section support (4-1) enters a pipe opening, a third motor (605) is controlled to enable a symmetrical mechanical high-speed pipe cleaner to enter the cleaning pipe until the wheel (905) arranged on the tail-section support (4-3) enters the cleaning pipe, the third motor (605) is stopped, the tail-section cleaning disc (1-2) enters the cleaning pipe through manual operation, and finally a cable is checked;

fourthly, starting the first motor (202) and the second motor (301) for cleaning the pipe, and then adjusting the axial movement speed of the third motor (605);

fifthly, stopping the third motor (605) before the first-section cleaning disc (1-1) reaches the pipe orifice of the cleaning pipe, and controlling the third motor (605) to enable the symmetrical mechanical high-speed pipe cleaner to move reversely after the pipe cleaner is stable;

and sixthly, stopping the first motor (202) and the second motor (301) before the tail section cleaning disc (1-2) reaches the mouth of the cleaning pipe, keeping the balance of the symmetrical mechanical high-speed cleaning pipe cleaner by manual operation before the wheels (905) arranged on the tail section support (4-3) reach the mouth of the cleaning pipe, stopping the third motor (605) before the wheels (905) arranged on the head section support (4-1) reach the mouth of the cleaning pipe, and finally finishing the outlet pipe of the symmetrical mechanical high-speed cleaning pipe cleaner by manual operation.