CN112705531A - Steel pipe deep hole shield scaling machine and using method thereof - Google Patents
Steel pipe deep hole shield scaling machine and using method thereof Download PDFInfo
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- CN112705531A CN112705531A CN202110094151.8A CN202110094151A CN112705531A CN 112705531 A CN112705531 A CN 112705531A CN 202110094151 A CN202110094151 A CN 202110094151A CN 112705531 A CN112705531 A CN 112705531A
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- pipe
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- steel pipe
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
- B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
- B08B9/027—Cleaning the internal surfaces; Removal of blockages
- B08B9/04—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes
- B08B9/043—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes moved by externally powered mechanical linkage, e.g. pushed or drawn through the pipes
- B08B9/045—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes moved by externally powered mechanical linkage, e.g. pushed or drawn through the pipes the cleaning devices being rotated while moved, e.g. flexible rotating shaft or "snake"
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B13/00—Accessories or details of general applicability for machines or apparatus for cleaning
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Abstract
The invention belongs to the technical field of remanufacturing of waste petroleum steel pipes, and particularly relates to a steel pipe deep hole shield scaling machine and a using method thereof. The steel pipe deep hole scale-shielding machine comprises a machine base and a machine frame, wherein a synchronous lifting device is fixed on the machine base, a track sliding bed is installed above the synchronous lifting device, and a fixed scale-shielding shaft seat is fixed on the track sliding bed. The steel pipe deep hole scale-shielding machine is special scale-cleaning equipment for cleaning scale in a steel pipe cavity, particularly, a petroleum waste steel pipe blocked by scale is cleaned and then cooperated with advanced remanufacturing technologies such as a surface coating engineering technology, and the manufactured and processed petroleum steel has the advantages of corrosion resistance, scale resistance, wax resistance, wear resistance, long service life and the like.
Description
Technical Field
The invention belongs to the technical field of remanufacturing of waste petroleum steel pipes, and particularly relates to a steel pipe deep hole shield scaling machine and a using method thereof.
Background
In the field of oil and gas field exploitation, the gathering and transportation of oil and gas water produced liquid adopts steel pipes with different pipe diameters to form a gathering and transportation pipe network, the oil and gas water produced liquid contains complex mixed scaling salt phases such as sulfate and carbonate which are easy to scale, which easily causes the gathering and transportation pipeline of the oil and gas water produced liquid to scale and block, so that the steel pipe of the gathering and transportation pipeline is scrapped, the waste petroleum steel pipe does not adopt the measures of resource utilization, so that a large amount of waste petroleum steel pipe resources are wasted, the recovery utilization rate and the recovery value of the steel pipe are low, various oil and gas field enterprises in China leave unused a large amount of the steel pipes, the scale cleaning method of the steel pipe mainly adopts chemical agents, high-pressure water injection, manpower and the like, the scale cleaning of the chemical agents has large influence on the material of the steel pipe, the application range of the types and the components of the chemical, and the method that the totally-blocked scaling steel pipe adopts chemical agents can not clear away the scaling substance in the pipe cavity, the scale is cleared away by high-pressure water jet, the installation capacity is large, the water consumption is high, the water treatment and other problems exist, the manual scale clearing efficiency is extremely low, the labor amount is large, the labor cost is high, pollutants such as dust and the like generated in the scale clearing operation cause environmental pollution, especially long-length steel pipe deep hole scale clearing, the manual operation difficulty is large, the inner wall of the pipe cavity can be damaged due to improper scale clearing method, and the steel pipe deep hole scale-shielding machine and the using method thereof are provided in order to overcome the defects in the prior art.
Disclosure of Invention
In order to overcome the defects in the background art, the technical scheme adopted by the invention for solving the technical problems is as follows: a steel pipe deep hole shield scale machine comprises a machine base and a machine frame, wherein a synchronous lifting device is fixed on the machine base, a track sliding bed is installed above the synchronous lifting device, a fixed shield scale shaft seat is fixed on the track sliding bed, a moving vehicle transmission device is arranged on the track sliding bed, a servo transmission device is fixed below the track sliding bed, a moving vehicle and a moving shield scale shaft seat are arranged on the moving vehicle transmission device, the servo transmission device can drive the moving vehicle to move forwards or backwards through the moving vehicle transmission device, a variable speed transmission device is installed on the moving vehicle and is connected with the tail end of a shield scale rotary cutting shaft, the variable speed transmission device can drive the shield scale rotary cutting shaft to rotate, the shield scale rotary cutting shaft penetrates through the moving shield scale shaft seat and the fixed shield scale shaft seat, a centralizer and a shield scale cutter head are installed at the front end of the shield scale rotary cutting shaft respectively, the pipe end connecting device is mounted on the inner side of the front end of the rack, and a scale collecting hopper is arranged on the inner side of the rear end of the rack.
Preferably, the front end and the rear end between the rail sliding bed and the base are provided with a liftable rear thrust force-dividing column.
Preferably, the forward or backward movement of the movable scuticoat pipe shaft seat is driven by a moving vehicle.
Preferably, the variable speed transmission device can drive the shield scale rotary cutting shaft to rotate: the variable speed transmission device can control the rotating speed of the shield scale rotary cutting shaft, and the spiral direction of the surface of the shield scale rotary cutting shaft is opposite to the rotating direction of the shield scale rotary cutting shaft.
Preferably, a pipe feeding device is arranged on one side of the rack, a pipe discharging device is arranged on the other side of the rack, and cross arms of the pipe feeding device and the pipe discharging device can be lifted up and down to adjust the angle of the cross arm.
Preferably, the pipe body is compressed and fixed by the pipe body fixing seat and the compressing device under the combined action, the compressing device can stretch up and down, and the driving stretching of the compressing device can adopt a hydraulic or pneumatic mode.
Preferably, the inner port of the pipe end connecting device is connected with the pipe orifice of the pipe body, the joint of the pipe end connecting device and the pipe orifice of the pipe body can stretch and move, the stretching and moving of the pipe end connecting device is realized in a hydraulic or pneumatic mode, and the outer port of the pipe end connecting device is connected with dust purification equipment.
Preferably, the synchronous lifting device is used for synchronously adjusting the height of the track sliding bed, so that the central height of the shield scale rotary cutting shaft is consistent with the central height of the pipe body on the pipe body fixing seat.
Preferably, the pipe moving vehicle can move up and down and move left and right.
The using method of the steel pipe deep hole shield scaling machine is characterized by comprising the following steps:
(1) placing the pipe body which needs to clean the scaling in the inner cavity by the shield scale on a pipe body feeding device;
(2) then the tube body moving vehicle transfers the tube body on the tube body feeding device to the tube body fixing seat;
(3) then the pressing device works to press and fix the pipe body on the pipe body fixing seat, meanwhile, the pipe end connecting device works to press one end of the pipe body, and the outer port of the pipe end connecting device is connected with the dust purification equipment;
(4) then the synchronous lifting device adjusts the height of the rail sliding bed to ensure that the central height of the shield scale rotary cutting shaft is consistent with the central height of the pipe body on the pipe body fixing seat;
(5) then the variable speed transmission device drives the shield scale rotary-cut shaft to rotate;
(6) then the servo transmission device drives the moving vehicle to move forward through the moving vehicle transmission device, so that the variable speed transmission device and the shield scale rotary cutting shaft on the moving vehicle move forward, a shield scale cutter disc at the front end of the shield scale rotary cutting shaft cleans scales in the inner cavity of the pipe body, and the cleaned scales enter a scale collecting hopper under the spiral driving of the shield scale rotary cutting shaft;
(7) after the shield scale rotary-cut shaft finishes cleaning scales in the pipe body, the servo transmission device drives the moving vehicle to retreat through the moving vehicle transmission device, so that the shield scale rotary-cut shaft is separated from the cleaned pipe body;
(8) releasing the compaction on the cleaned pipe body by the pipe end connecting device and the compaction device;
(9) and finally, the pipe body moving vehicle transfers the cleaned pipe body from the pipe body fixing seat to the pipe body discharging device to complete cleaning of the scaling substances in the pipe body.
In order to overcome the defects of the prior art, the invention provides a steel pipe deep hole scale-shielding machine and a use method thereof, the steel pipe deep hole scale-shielding machine is special scale-cleaning equipment for cleaning scales in a steel pipe cavity, in particular to a petroleum waste steel pipe blocked by scales, the scale-cleaning treatment is performed on the petroleum waste steel pipe, the scale-cleaning treatment is cooperated with advanced remanufacturing technologies such as a surface coating engineering technology and the like, and the manufactured petroleum steel has the advantages of corrosion resistance, scale resistance, wax resistance, wear resistance, long service life and the like. In addition, this steel pipe deep hole shield dirt machine still has following advantage:
1. the steel pipe deep hole shield scaling machine has high automation degree, and can continuously remove the dirt in the inner cavity of the scaling steel pipe.
2. The steel pipe deep hole scale-shielding machine can remove scales in the inner cavity of a steel pipe, does not damage the pipe wall of the steel pipe, keeps the steel pipe in intact original performance, and protects the material property of the steel pipe.
3. The steel pipe deep hole scale-shielding machine is safe to operate and control, efficient, stable, environment-friendly, low in scale-cleaning cost and suitable for thoroughly cleaning scales in inner cavities of full-blocking scale-cleaning steel pipes or open scale-cleaning steel pipes.
4. The scale cleaning technology of the steel pipe deep hole shield scale machine is cooperated with advanced remanufacturing technologies such as a surface coating engineering technology and the like to manufacture the petroleum conveying steel pipe, and the service life of the remanufactured and processed steel pipe is more than 5 times of that of a common new steel pipe.
5. The steel pipe deep hole shield scaling machine has the advantages of obvious recycling of waste steel pipes, reduction of steel resource consumption, reduction of environmental pollution, reduction of waste steel pipe waste, saving of production cost and other social and economic benefits.
Drawings
The invention is further illustrated with reference to the following figures and examples.
FIG. 1 is a schematic structural diagram of a steel pipe deep hole shield scale machine of the invention;
FIG. 2 is a schematic view of a partial structure of a deep-hole shield scaling machine for a steel pipe according to the present invention;
FIG. 3 is a schematic diagram of a partial structure of a deep-hole shield scaling machine for steel pipes according to the present invention;
wherein, 1, a variable speed transmission device; 2. rotating and cutting a shaft by shield scale; 3. moving the shield scale shaft seat; 31. fixing a shield scale shaft seat; 4. a centralizer; 5. a shield scale cutter head; 6. a mobile vehicle; 7. a rail sliding bed; 8. a dolly transmission; 9. a synchronous lifting device; 10. a servo transmission device; 11. a machine base; 12. a rear thrust force-dividing column; 13. a frame; 14. a pressing device; 15. a pipe body fixing seat; 16. a pipe end connection device; 17. a pipe body moving vehicle; 18. a scale receiving hopper; 19. a pipe body feeding device; 20. a pipe body discharging device; 21. a tube body.
Detailed Description
The present invention will now be described in further detail with reference to the accompanying drawings. The drawings are simplified schematic views illustrating only the basic structure of the present invention in a schematic manner, and thus show only the constitution related to the present invention.
In the specific embodiment, referring to fig. 1-3, a steel tube deep hole shield scaling machine is characterized by comprising a base 11 and a frame 13, wherein a synchronous lifting device 9 is fixed on the base 11, a rail sliding bed 7 is installed above the synchronous lifting device 9, a fixed shield scaling shaft seat 31 is fixed on the rail sliding bed 7, a moving vehicle transmission device 8 is arranged on the rail sliding bed 7, a servo transmission device 10 is fixed below the rail sliding bed 7, a moving vehicle 6 and a moving shield scaling shaft seat 3 are arranged on the moving vehicle transmission device 8, the servo transmission device 10 can drive the moving vehicle 6 to move forward or backward through the moving vehicle transmission device 8, a variable speed transmission device 1 is installed on the moving vehicle 6, the variable speed transmission device 1 is connected with the tail end of a shield scaling shaft 2, the variable speed transmission device 1 can drive the shield scaling shaft 2 to rotate, the shield scale rotary-cut shaft 2 passes from removing shield scale axle bed 3 and fixed shield scale axle bed 31 in, centralizer 4 and shield scale blade disc 5 are installed respectively to 2 front ends of shield scale rotary-cut shaft, the top of frame 13 is fixed with closing device 14, the middle part of frame 13 evenly is fixed with a plurality of body fixing bases 15, is equipped with body locomotive 17 between two adjacent body fixing bases 15, pipe end connecting device 16 is installed to the front end inboard of frame 13, the rear end inboard of frame 13 is equipped with dirt collecting hopper 18, liftable back thrust component force post 12 is installed to front end and rear end between track sliding bed 7 and the frame 11, the advancing or retreating of removing shield scale axle bed 3 is driven by locomotive 6, variable speed drive 1 can drive shield scale rotary-cut shaft 2 rotatory: the variable speed transmission device 1 can control the rotating speed of the shield scale rotary cutting shaft 2, the spiral direction of the surface of the shield scale rotary cutting shaft 2 is opposite to the rotating direction of the shield scale rotary cutting shaft 2, one side of the frame 13 is provided with a pipe body feeding device 19, the other side of the frame 13 is provided with a pipe body discharging device 20, the cross arms of the pipe body feeding device 19 and the pipe body discharging device 20 can be lifted up and down to adjust the angle of the cross arm, the pipe body fixing seat 15 and the pressing device 14 act together to press and fix the pipe body 21, the pressing device 14 can be stretched up and down, the driving stretching of the pressing device 14 can adopt a hydraulic or pneumatic mode, the inner port of the pipe end connecting device 16 is connected with the pipe orifice of the pipe body 21, the connecting part 16 on the pipe end connecting device is connected with the pipe orifice of the pipe body 21 in a stretching and moving mode, and the stretching motion on the pipe end connecting device 16 is, the outer port of the pipe end connecting device 16 is connected with a dust purification device, the synchronous lifting device 9 is used for synchronously adjusting the height of the track sliding bed 7, so that the central height of the shield scale rotary-cut shaft 2 is consistent with the central height of the pipe body 21 on the pipe body fixing seat 15, and the pipe body moving vehicle 17 can lift up and down and move left and right.
The using method of the steel pipe deep hole shield scaling machine is characterized by comprising the following steps:
(1) placing a pipe body 21 which needs to clean scaling in the inner cavity by shield scaling on a pipe body feeding device 19;
(2) then the tube moving vehicle 17 transfers the tube 21 on the tube feeding device 19 to the tube fixing seat 15;
(3) then, the pressing device 14 works to press and fix the pipe body 21 on the pipe body fixing seat 15, meanwhile, the pipe end connecting device 16 works to press and press one end of the pipe body 21, and the outer port of the pipe end connecting device 16 is connected with the dust purification equipment;
(4) then the synchronous lifting device 9 adjusts the height of the track sliding bed 7, so that the central height of the shield scale rotary-cut shaft 2 is consistent with the central height of the pipe body 21 on the pipe body fixing seat 15;
(5) then the variable speed transmission device 1 drives the shield scale rotary cutting shaft 2 to rotate;
(6) then the servo transmission device 10 drives the moving vehicle 6 to move forward through the moving vehicle transmission device 8, so that the variable speed transmission device 1 and the shield scale rotary cutting shaft 2 on the moving vehicle 6 move forward, the shield scale cutter head 5 at the front end of the shield scale rotary cutting shaft 2 cleans scales in the inner cavity of the pipe body 21, and the cleaned scales enter the scale collecting hopper 18 under the spiral driving of the shield scale rotary cutting shaft 2;
(7) after the shield scale rotary cutting shaft 2 finishes cleaning the scale substances in the pipe body 21, the servo transmission device 10 drives the moving vehicle 6 to retreat through the moving vehicle transmission device 8, so that the shield scale rotary cutting shaft 2 leaves the cleaned pipe body 21;
(8) then the pipe end connecting device 16 and the pressing device 14 release the pressing on the cleaned pipe body 21;
(9) and finally, the pipe body moving vehicle 17 transfers the cleaned pipe body 21 from the pipe body fixing seat 15 to the pipe body discharging device 20, so that cleaning of scaling substances in the pipe body 21 is completed.
The invention provides a steel pipe deep hole scale-shielding machine and a use method thereof, the steel pipe deep hole scale-shielding machine is special scale-cleaning equipment for cleaning scales in a pipe cavity of a steel pipe, in particular to a petroleum steel manufactured and processed by the petroleum waste steel pipe blocked by scales through scale cleaning treatment and advanced remanufacturing technologies such as a surface coating engineering technology and the like, and the steel pipe deep hole scale-shielding machine has the advantages of corrosion resistance, scale resistance, wax resistance, wear resistance, long service life and the like. In addition, this steel pipe deep hole shield dirt machine still has following advantage:
1. the steel pipe deep hole shield scaling machine has high automation degree, and can continuously remove the dirt in the inner cavity of the scaling steel pipe.
2. The steel pipe deep hole scale-shielding machine can remove scales in the inner cavity of a steel pipe, does not damage the pipe wall of the steel pipe, keeps the steel pipe in intact original performance, and protects the material property of the steel pipe.
3. The steel pipe deep hole scale-shielding machine is safe to operate and control, efficient, stable, environment-friendly, low in scale-cleaning cost and suitable for thoroughly cleaning scales in inner cavities of full-blocking scale-cleaning steel pipes or open scale-cleaning steel pipes.
4. The scale cleaning technology of the steel pipe deep hole shield scale machine is cooperated with advanced remanufacturing technologies such as a surface coating engineering technology and the like to manufacture the petroleum conveying steel pipe, and the service life of the remanufactured and processed steel pipe is more than 5 times of that of a common new steel pipe.
5. The steel pipe deep hole shield scaling machine has the advantages of obvious recycling of waste steel pipes, reduction of steel resource consumption, reduction of environmental pollution, reduction of waste steel pipe waste, saving of production cost and other social and economic benefits.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.
Claims (10)
1. The utility model provides a steel pipe deep hole shield dirt machine, includes frame (11) and frame (13), its characterized in that: a synchronous lifting device (9) is fixed on the base (11), a track sliding bed (7) is installed above the synchronous lifting device (9), a fixed scale shaft seat (31) is fixed on the track sliding bed (7), a moving vehicle transmission device (8) is arranged on the track sliding bed (7), a servo transmission device (10) is fixed below the track sliding bed (7), a moving vehicle (6) and a moving scale shaft seat (3) are arranged on the moving vehicle transmission device (8), the servo transmission device (10) can drive the moving vehicle (6) to advance or retreat through the moving vehicle transmission device (8), a variable speed transmission device (1) is installed on the moving vehicle (6), the variable speed transmission device (1) is connected with the tail end of the scale rotating and cutting shaft (2), and the variable speed transmission device (1) can drive the scale rotating and cutting shaft (2) to rotate, the shield scale rotary cutting shaft (2) penetrates through the shield scale rotary cutting shaft seat (3) and the fixed shield scale shaft seat (31) from the moving direction, a centralizer (4) and a shield scale cutter head (5) are respectively installed at the front end of the shield scale rotary cutting shaft (2), a pressing device (14) is fixed above the rack (13), a plurality of pipe body fixing seats (15) are uniformly fixed at the middle part of the rack (13), a pipe body moving vehicle (17) is arranged between the two adjacent pipe body fixing seats (15), a pipe end connecting device (16) is installed on the inner side of the front end of the rack (13), and a scale collecting hopper (18) is arranged on the inner side of the rear end of the rack (13).
2. The steel pipe deep hole shield scaling machine of claim 1, characterized in that: and a liftable rear thrust force-dividing column (12) is arranged at the front end and the rear end between the track sliding bed (7) and the machine base (11).
3. The steel pipe deep hole shield scaling machine of claim 1, characterized in that: the moving shield scale shaft seat (3) is driven by the moving vehicle (6) to move forwards or backwards.
4. The steel pipe deep hole shield scaling machine of claim 1, characterized in that: variable speed drive (1) can drive shield scale rotary cutting axle (2) rotatory: the variable speed transmission device (1) can control the rotating speed of the shield scale rotary cutting shaft (2), and the spiral direction of the surface of the shield scale rotary cutting shaft (2) is opposite to the rotating direction of the shield scale rotary cutting shaft (2).
5. The steel pipe deep hole shield scaling machine of claim 1, characterized in that: a pipe feeding device (19) is arranged on one side of the rack (13), a pipe discharging device (20) is arranged on the other side of the rack (13), and the cross arms of the pipe feeding device (19) and the pipe discharging device (20) can be adjusted in an up-down lifting mode.
6. The steel pipe deep hole shield scaling machine of claim 1, characterized in that: the pipe body fixing seat (15) and the pressing device (14) jointly act to press and fix the pipe body (21), the pressing device (14) can stretch up and down, and the driving stretching of the pressing device (14) can adopt a hydraulic or pneumatic mode.
7. The steel pipe deep hole shield scaling machine of claim 1, characterized in that: the inner port of the pipe end connecting device (16) is connected with the pipe orifice of the pipe body (21), the joint of the pipe end connecting device (16) and the pipe orifice of the pipe body (21) can stretch and move, the stretching and moving on the pipe end connecting device (16) are realized in a hydraulic or pneumatic mode, and the outer port of the pipe end connecting device (16) is connected with dust purification equipment.
8. The steel pipe deep hole shield scaling machine of claim 1, characterized in that: the synchronous lifting device (9) is used for synchronously adjusting the height of the track sliding bed (7) so that the central height of the shield scale rotary cutting shaft (2) is consistent with the central height of the pipe body (21) on the pipe body fixing seat (15).
9. The steel pipe deep hole shield scaling machine of claim 1, characterized in that: the pipe moving vehicle (17) can move up and down and left and right.
10. The use method of the steel pipe deep hole shield scaling machine according to claim 1 is characterized by comprising the following steps:
(1) placing a pipe body (21) which needs to clean scaling in the inner cavity by shield scaling on a pipe body feeding device (19);
(2) then the tube body moving vehicle (17) transfers the tube body (21) on the tube body feeding device (19) to the tube body fixing seat (15);
(3) then, the pressing device (14) works to press and fix the pipe body (21) on the pipe body fixing seat (15), meanwhile, the pipe end connecting device (16) works to press and fix one end of the pipe body (21), and the outer port of the pipe end connecting device (16) is connected with the dust purification equipment;
(4) then the synchronous lifting device (9) adjusts the height of the track sliding bed (7) to ensure that the central height of the shield scale rotary cutting shaft (2) is consistent with the central height of the pipe body (21) on the pipe body fixing seat (15);
(5) then the variable speed transmission device (1) drives the shield scale rotary cutting shaft (2) to rotate;
(6) then the servo transmission device (10) drives the moving vehicle (6) to move forward through the moving vehicle transmission device (8), so that the variable speed transmission device (1) and the shield scale rotary cutting shaft (2) on the moving vehicle (6) move forward, a shield scale cutter head (5) at the front end of the shield scale rotary cutting shaft (2) cleans scales in the inner cavity of the pipe body (21), and the cleaned scales enter a scale collecting hopper (18) under the spiral driving of the shield scale rotary cutting shaft (2);
(7) after the shield scale rotary cutting shaft (2) is cleaned to finish scaling in the pipe body (21), the servo transmission device (10) drives the moving vehicle (6) to retreat through the moving vehicle transmission device (8), so that the shield scale rotary cutting shaft (2) leaves the cleaned pipe body (21);
(8) releasing the pipe end connecting device (16) and the pressing device (14) to press the cleaned pipe body (21);
(9) and finally, the pipe body moving vehicle (17) transfers the cleaned pipe body (21) from the pipe body fixing seat (15) to the pipe body discharging device (20) to finish cleaning the scaling substances in the pipe body (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110094151.8A CN112705531A (en) | 2021-01-25 | 2021-01-25 | Steel pipe deep hole shield scaling machine and using method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110094151.8A CN112705531A (en) | 2021-01-25 | 2021-01-25 | Steel pipe deep hole shield scaling machine and using method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112705531A true CN112705531A (en) | 2021-04-27 |
Family
ID=75549578
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110094151.8A Pending CN112705531A (en) | 2021-01-25 | 2021-01-25 | Steel pipe deep hole shield scaling machine and using method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112705531A (en) |
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2021
- 2021-01-25 CN CN202110094151.8A patent/CN112705531A/en active Pending
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