CN210703931U - Steel pipeline inner wall rough drying polishing machine - Google Patents
Steel pipeline inner wall rough drying polishing machine Download PDFInfo
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- CN210703931U CN210703931U CN201921679355.2U CN201921679355U CN210703931U CN 210703931 U CN210703931 U CN 210703931U CN 201921679355 U CN201921679355 U CN 201921679355U CN 210703931 U CN210703931 U CN 210703931U
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Abstract
The application discloses a steel pipeline inner wall roughening and polishing machine which comprises a rack, wherein a fixing mechanism for placing a to-be-polished pipe fitting and two sets of feeding mechanisms symmetrically arranged at two ends of the rack are arranged on the rack, and polishing mechanisms are arranged on the feeding mechanisms; the grinding mechanism is used for grinding the inner wall of the pipe fitting placed on the fixing mechanism in a reciprocating linear mode through the driving of the feeding mechanism. The utility model discloses can solve the problem of mentioning in the background art.
Description
Technical Field
The utility model relates to the field of machinary, especially, relate to a be used for making processing metal pipe fitting and tubular product mechanical equipment field, concretely relates to a be used for polishing the metal pipe fitting inner wall, get rid of the metal pipe fitting inner wall because welding or other to closing the grinding pipe machinery of connecting the debris or the irregular residual that remain at the metal pipe inner wall.
Background
The conventional type of water supply and drainage pipeline generally adopts a low-pressure fluid seaming welded pipe (reference standard number: GB/T3091-2015 "welded steel pipe for low-pressure fluid conveyance" is a method of using a steel pipe as a base material, and after deburring and inner and outer wall roughening treatments by straight seam welding inside the steel pipe through a pre-compounding process [ reference standard No.: GB/T28897-2012 Steel-Plastic composite pipe can be processed in the subsequent procedures. Because the base material adopts a high-frequency welding process, welding marks and burrs are difficult to avoid at the welding position, and 7.1.3.1 clearly requires that the steel pipe is subjected to surface pretreatment to remove iron rust, internal burrs and dirt on the steel-plastic joint surface in the execution standard of composite pipeline production (GB/T28897-2012 steel-plastic composite pipe). "; and 7.1.3.2 specifically requires: the inner burr of the straight welded steel pipe for lining plastic or coating plastic is removed, 1/3 with the residual height not greater than the specified thickness of the lining plastic layer is protruded in the straight welded steel pipe for lining plastic, and the residual height not greater than 0.5mm is protruded in the straight welded steel pipe for coating plastic. "
The subsequent sand blasting process adopts dry and clean compressed gas with the pressure not lower than 0.6Mpa to apply kinetic energy with the initial speed not lower than 6 m/s to the bearing alloy steel grit (with the mark of G14 or G16). But due to the limitations of the sand blasting process of the existing equipment; effective sand blasting areas can be only concentrated in the range of 1 meter at the pipe end, the composite surface with the length of about 4 meters at the middle section of the base pipe is difficult to be effectively roughened, and the bonding strength (lining Polyethylene (PE) steel plastic pipe for water supply) and the adhesion (plastic coated Polyethylene (PE) steel plastic pipe for water supply and plastic coated epoxy resin (EP) steel plastic pipe for water supply) which are far beyond the limit of national standard parameters of a finished product are ensured.
The utility model discloses research and development is in order to increase the inside pipe wall roughness to let off-the-shelf adhesive force and bonding strength satisfy and be superior to relevant standard regulation.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem that the prior art can not polish longer metal pipes without blind areas, the application provides a steel pipeline inner wall roughening polishing machine which can polish redundant residual sundries or protruding welding spots on the inner wall of a long metal pipe without blind areas at one time, roughens and polishes the inner wall, provides conditions for subsequent lining process processing, and ensures the adhesive force of plastic-coated Polyethylene (PE) steel-plastic pipes and plastic-coated epoxy resin (EP) for water supply.
So that the roughness of the inner wall of the metal pipe reaches or even exceeds the national standard of products in the field.
In order to achieve the purpose, the technical scheme adopted by the application is as follows:
a steel pipeline inner wall roughening and polishing machine comprises a rack, wherein a fixing mechanism for placing a pipe fitting to be polished and two sets of feeding mechanisms symmetrically arranged at two ends of the rack are arranged on the rack, and polishing mechanisms are arranged on the feeding mechanisms; the grinding mechanism is used for grinding the inner wall of the pipe fitting placed on the fixing mechanism in a reciprocating linear mode through the driving of the feeding mechanism.
The frame is a metal fixing frame fixedly arranged on the ground of a polishing workshop and used for installing all pipe polishing equipment and playing roles in supporting, positioning and fixing. During actual manufacturing, the angle steel, channel steel or I-steel are adopted to carry out positioning welding in the most convenient mode, and the frame formed by the materials is high in speed, high in efficiency, small in installation difficulty and good in supporting capacity for equipment. The length of the frame can be determined according to the length of the pipe fitting to be machined.
The fixing mechanism is used for fixing and restraining the pipe fitting in the inner wall polishing process. In the polishing process of the pipe fitting, a friction external force is applied to the inner wall of the pipe fitting, so that the stability and uniformity of polishing are ensured, the pipe fitting needs to be fixed, however, the fixing mechanism realizes the function, and the fixing mode can adopt an absolute fixing mode and a relative fixing mode; wherein absolute fixed mode is just fairly simple, generally adopt the clamp to fix the pipe fitting in the frame polish can, polish the back of finishing, demolish the clamp. The other relative fixing mode is more due to absolute fixing, namely when the pipe fitting is fixed, the position of the pipe fitting relative to the rack is only fixed, but the pipe fitting can rotate, preferably, the rotating direction of the pipe fitting is opposite to the direction of friction force generated by grinding the inner wall of the pipe fitting, so that the pipe fitting can form a larger relative friction linear velocity with the grinding mechanism, and the grinding effect is improved.
The grinding mechanism is used for realizing the grinding purpose by adopting rotation or other modes to rub or collide the inner wall of the pipe fitting, so that redundant objects adhered or fixedly adhered to the inner wall of the pipe fitting are removed, and the inner wall of the pipe fitting achieves the technical effect of uniform roughness.
The feeding mechanism is used for driving the polishing mechanism to uniformly polish the inner wall of the pipe fitting without leaving a blind area; if the grinding mechanism does not generate relative displacement to the pipe fitting, the grinding of the inner wall of the pipe fitting without a blind area can not be realized, and the feeding mechanism drives the grinding mechanism to reciprocate on the inner wall of the pipe fitting, so that the technical effect of grinding without the blind area is finally achieved.
Preferably, the feeding mechanism comprises a mounting plate, a first motor is mounted on the upper surface of the mounting plate, a first driving wheel is fixedly mounted on the first motor, two sets of wheel shaft assemblies capable of moving linearly along the rack are fixedly mounted on the lower surface of the mounting plate, a first driven wheel is arranged on one set of wheel shaft assembly, and the first driven wheel is in driving connection with the first driving wheel through a first driving belt penetrating through a strip-shaped hole formed in the mounting plate; the first motor realizes that the feeding mechanism does reciprocating linear motion along the rack through forward and reverse rotation.
Preferably, the wheel shaft assembly comprises a plurality of wheel shaft seats fixedly connected to the lower surface of the mounting plate, the wheel shaft seats are rotatably connected with the wheel shaft through first bearings, two ends of the wheel shaft are provided with walking rollers, and two sides of the rack are provided with wheel grooves for supporting the walking rollers to roll; the first driven wheel is connected to the wheel shaft in an alternative mode.
Preferably, the polishing mechanism is mounted on the mounting plate and comprises a second motor mounted on the mounting plate, and an output shaft of the second motor is sequentially in driving connection with a coupler, a polishing rod and a polishing head mounted at the end of the polishing rod; one end of the polishing rod close to the coupler is fixed through a plurality of second bearings which are mounted on a bearing seat in parallel, and the bearing seat is fixedly mounted on the upper surface of the mounting plate.
Preferably, the fixing mechanism comprises two pairs of speed-increasing rollers for supporting the pipe fitting, and each pair of speed-increasing rollers is transversely arranged along the length direction of the rack and is connected with the rack through a roller bracket fixedly connected to the rack; and the roller shaft of one of the speed-increasing rollers in each pair extends outwards and is fixedly connected with a second driven wheel, and the second driven wheel is in driving connection with a second driving wheel on an output shaft of a third motor fixedly installed on the rack through a second driving belt.
Preferably, the first driven wheel, the first drive belt and the first drive wheel are in driving connection a sprocket chain assembly or a pulley and belt assembly.
Preferably, the second driven wheel, the second transmission belt and the second driving wheel are sprocket chain assemblies in driving connection or are belt pulley and belt assemblies. It is worth to be noted that, besides the above structure, transmission between the screw rod and the screw rod sleeve can be adopted, the screw rod transmission has higher precision and simple implementation mode, only the screw rod sleeve needs to be fixed with the mounting plate in the above structure, and the first motor for driving the screw rod is mounted at the end of the rack, so that the above effect can be realized.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without inventive exercise.
Fig. 1 is a perspective view of the present invention;
FIG. 2 is a front view of the present invention (the same structure is omitted in cross section);
fig. 3 is a plan view of the present invention (the same structure is omitted in cross section);
fig. 4 is a perspective view of the utility model viewed obliquely from above;
fig. 5 is an enlarged view of the structure of region a in fig. 4.
In the figure: 1-a frame; 11-wheel groove;
2-a feeding mechanism; 21-mounting a plate; 211-bar shaped holes; 22-a first motor; 23-a first drive wheel; 24-a first drive belt; 25-a first driven wheel; 26-axle; 27-a wheel axle seat; 28-a first bearing; 29-a walking roller;
3-a polishing mechanism; 31-a second motor; 32-a coupling; 33-a bearing seat; 34-a second bearing; 35-grinding rod; 36-polishing head;
4-a fixing mechanism; 41-a third motor; 42-a second drive wheel; 43-a second drive belt; 44-a second driven wheel; 45-speed increasing rollers; 46-a roller bracket; 5-pipe fitting.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present application, it should be noted that if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are used for indicating the orientation or positional relationship based on the orientation or positional relationship shown in the drawings or the orientation or positional relationship which is usually placed when the product of the application is used, the description is only for convenience and simplicity, and the indication or suggestion that the referred device or element must have a specific orientation, be constructed in a specific orientation and be operated, and thus, should not be construed as limiting the present application. Furthermore, the appearances of the terms "first," "second," and the like in the description herein are only used for distinguishing between similar elements and are not intended to be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal", "vertical" and the like when used in the description of the present application do not require that the components be absolutely horizontal or overhanging, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the present application, it should also be noted that, unless otherwise explicitly stated or limited, the terms "disposed," "mounted," "connected," and "connected" should be interpreted broadly, e.g., as being fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
Example 1:
the steel pipeline inner wall roughening and polishing machine disclosed in the attached drawing 2 of the specification comprises a rack 1, wherein a fixing mechanism 4 for placing a pipe fitting 5 to be polished and two sets of feeding mechanisms 2 symmetrically arranged at two ends of the rack 1 are arranged on the rack 1, and polishing mechanisms 3 are arranged on the feeding mechanisms 2; the grinding mechanism 3 is driven by the feeding mechanism 2 to grind the inner wall of the pipe fitting 5 placed on the fixing mechanism 4 in a reciprocating linear mode. In order to explain the above structural combination, the working principle and technical effect of each functional mechanism are explained below.
Firstly, the frame 1 is a metal fixing frame fixedly installed on the ground of a polishing workshop and used for installing all pipe polishing equipment to play roles in supporting, positioning and fixing. During actual manufacturing, the angle steel, channel steel or I-steel are adopted for positioning welding in the most convenient mode, and the rack 1 formed by combining the materials is high in speed, high in efficiency, small in installation difficulty and good in supporting capacity for equipment. The length of the frame 1 can be determined according to the actual requirement for processing the length of the pipe 5.
Next, the fixing mechanism 4 is a mechanism for fixing and restraining the pipe 5 in the process of polishing the inner wall of the pipe 5. Because the pipe fitting 5 applies a friction external force to the inner wall of the pipe fitting 5 in the polishing process, in order to ensure the stability and uniformity of polishing, the pipe fitting 5 needs to be fixed, however, the fixing mechanism 5 has the function, and the fixing mode can adopt an absolute fixing mode and a relative fixing mode; wherein absolute fixed mode is just simpler, generally adopt the clamp to fix pipe fitting 5 on frame 1 and polish can, polish the back, demolish the clamp. The other relative fixing mode is more due to absolute fixing, namely when the pipe 5 is fixed, only the position of the pipe 5 relative to the rack 1 is fixed, but the pipe 5 can rotate, preferably, the rotating direction of the pipe 5 is opposite to the direction of friction force generated by grinding the inner wall of the pipe 5, so that the pipe 5 can form a larger relative friction linear speed with the grinding mechanism 3, and the grinding effect is improved.
Furthermore, grinding machanism 3 is the purpose that adopts rotatory or other modes to rub or collide 5 inner walls of pipe fitting and realize polishing to get rid of the unnecessary object that the adhesion or fixed bonding on 5 inner walls of pipe fitting, make 5 inner walls of pipe fitting reach even roughness's technological effect.
Finally, the feeding mechanism 2 is a mechanism for driving the polishing mechanism 3 to uniformly polish the inner wall of the pipe fitting 5 without leaving a blind area; because grinding machanism 3 is not to pipe fitting 5 relative displacement, so just can't realize the no blind area of 5 inner walls of pipe fitting and polish, feed mechanism 2 is the drive grinding machanism 3 at 5 inner wall reciprocating motion of pipe fitting, finally reaches the technological effect of no blind area polishing.
When actually polishing, the pipe fitting 5 is in the middle of the two polishing mechanisms 3, and the two polishing mechanisms 3 are driven by the feeding mechanism 2 to polish the inner wall of the pipe fitting 5 without blind areas. Because it is two grinding machanism 3 in coordination to polish at the in-process of polishing, will guarantee no blind area, so two grinding machanism 3's the scope of polishing just has intersection, and how to avoid this to polish two grinding machanism 3 in the intersection and not collide need be according to the size of the pipe fitting 5 of waiting to polish to and grinding machanism 3 carries out closed loop control's system decision. The application only requires to protect the structure of the grinding machine, does not improve the closed-loop control electrical system, and adopts the simplest existing control logic during actual grinding work. For example, sanding intersection areas at the left and right two sanding mechanisms 3 may be achieved by setting a time delay for the feed time of the two sanding mechanisms 3. Before left grinding machanism 3 reaches the right extreme position of polishing and backs, grinding machanism 3 on right side is in the wait state, treats that left side grinding machanism 3 withdraws from intersection region back, and right side grinding machanism 3 reenters intersection region and polishes, realizes feeding the problem of avoiding two sets of 3 collisions of collaborative grinding machanism that the dislocation just can be fine like this. The application of the closed-loop control system in the field of mechanical control is mature, and the problem of fault avoidance is complete, so that the control part is not improved, and the control principle is not described in detail.
Example 2:
in this embodiment, based on embodiment 1, further detailed description, implementation structural description and principle explanation are further performed on each part of the machine of the present invention with reference to fig. 1 to 5. Specifically, the feeding mechanism 2 includes a mounting plate 21, a first motor 22 is mounted on the upper surface of the mounting plate 21, a first driving wheel 23 is fixedly mounted on the first motor 22, two sets of wheel axle assemblies capable of moving linearly along the rack 1 are fixedly mounted on the lower surface of the mounting plate 21, a first driven wheel 25 is arranged on one set of wheel axle assembly, and the first driven wheel 25 is in driving connection with the first driving wheel 23 through a first driving belt 24 penetrating through a strip-shaped hole 211 formed in the mounting plate 21; the first motor 22 realizes the reciprocating linear motion of the feeding mechanism 2 along the frame 1 through positive and negative rotation. The purpose of setting up two sets of shaft subassemblies is the stability of guaranteeing mounting panel 21, avoids producing the shake because of the focus is unstable in the removal process, influences the degree of consistency of polishing. The wheel shaft assembly comprises a plurality of wheel shaft seats 27 fixedly connected to the lower surface of the mounting plate 21, the wheel shaft seats 27 are rotatably connected with a wheel shaft 26 through a first bearing 28, two ends of the wheel shaft 26 are provided with walking rollers 29, and two sides of the rack 1 are provided with wheel grooves 11 for supporting the walking rollers 29 to roll; the first driven wheel 25 is selectively connected to the wheel shaft 26. Since the driving force required by the mounting base 21 is not large, it is sufficient to drive only one set of axle components. Of course, the same first motor 22 is used for driving, so that each group of axle assemblies can rotate synchronously, and displacement errors caused by the slippage of the roller 29 can be avoided to the greatest extent.
In this embodiment, the polishing mechanism 3 is mounted on the mounting plate 21, the polishing mechanism 3 includes a second motor 31 mounted on the mounting plate 21, and an output shaft of the second motor 31 is sequentially connected with a coupler 32, a polishing rod 35 and a polishing head 36 mounted at an end of the polishing rod 35 in a driving manner; one end of the polishing rod 35 close to the coupler 32 is fixed through a plurality of second bearings 34 mounted on the bearing block 33 in parallel, and the plurality of second bearings 34 are adopted to ensure that the polishing rod 35 has good stability and good coaxiality on the premise of long polishing length, and the polishing head 36 does not swing obviously. The bearing block 33 is fixedly mounted on the upper surface of the mounting plate 21. The material of the polishing head 36 is flexibly selected according to the pipe fitting 5 to be polished. In order to ensure the ideal roughening effect, the selection of the grinding material is determined after data inspection and actual test. The straight welded steel pipe is not annealed, the strength of a welding rib is high, and the selected type of a grinding material is 60# red corundum; the galvanized pipe is heated and annealed before hot galvanizing, data information and actual conditions are integrated, and the model selection of a grinding material is 80# white corundum.
In this embodiment, the fixing mechanism 4 includes two pairs of speed-increasing rollers 45 for supporting the pipe 5, and each pair of speed-increasing rollers 45 is transversely disposed along the length direction of the rack 1 and connected by a roller bracket 46 fixedly connected to the rack 1; a second driven wheel 44 is fixedly connected to one of the speed increasing rollers 45 in each pair in an extending manner, and the second driven wheel 44 is in driving connection with a second driving wheel 42 fixedly mounted on an output shaft of a third motor 41 on the frame 1 through a second driving belt 43. The fixing mechanism in this embodiment is adopted relatively fixed, namely, the pipe fitting 5 can rotate under the action of the speed-increasing roller 45 on the premise that the relative position does not change, and the rotating direction is opposite to the rotating direction of the polishing head 36, so that the linear speed of polishing the inner wall of the pipe fitting 5 is equal to the sum of the rotation speed of the pipe fitting 5 and the rotation speed of the polishing head 36, and the polishing efficiency and the uniformity of the roughness of the inner wall of the pipe fitting 5 can be greatly improved.
In this embodiment, the first driven pulley 25, the first drive belt 24 and the first drive pulley 23 are sprocket chain assemblies in driving connection. The second driven pulley 44, the second transmission belt 43 and the second driving pulley 42 are chain wheel and chain assemblies in driving connection.
It should be noted that, in addition to the above structure disclosed in this embodiment, transmission between the screw rod and the screw rod sleeve may also be adopted, the precision of the screw rod transmission is higher, the implementation is simple, only the screw rod sleeve needs to be fixed to the mounting plate 21 in the above structure, and the first motor 22 for driving the screw rod is mounted at the end of the rack 1, which can also achieve the above effect.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (7)
1. The utility model provides a steel pipeline inner wall roughly dries machinery of polishing which characterized in that: the pipe fitting polishing machine comprises a rack (1), wherein a fixing mechanism (4) for placing a pipe fitting (5) to be polished and two sets of feeding mechanisms (2) symmetrically arranged at two ends of the rack (1) are arranged on the rack (1), and polishing mechanisms (3) are arranged on the feeding mechanisms (2); the grinding mechanism (3) is used for carrying out reciprocating linear grinding on the inner wall of the pipe fitting (5) placed on the fixing mechanism (4) through the driving of the feeding mechanism (2).
2. The steel pipeline inner wall roughening and polishing machine as claimed in claim 1, wherein: the feeding mechanism (2) comprises a mounting plate (21), a first motor (22) is mounted on the upper surface of the mounting plate (21), a first driving wheel (23) is fixedly mounted on the first motor (22), two sets of wheel shaft assemblies capable of moving linearly along the rack (1) are fixedly mounted on the lower surface of the mounting plate (21), a first driven wheel (25) is arranged on one set of wheel shaft assembly, and the first driven wheel (25) is in driving connection with the first driving wheel (23) through a first driving belt (24) penetrating through a strip-shaped hole (211) in the mounting plate (21); the first motor (22) realizes the reciprocating linear motion of the feeding mechanism (2) along the rack (1) through positive and negative rotation.
3. The steel pipeline inner wall roughening and polishing machine as claimed in claim 2, wherein: the wheel shaft assembly comprises a plurality of wheel shaft seats (27) fixedly connected to the lower surface of the mounting plate (21), the wheel shaft seats (27) are rotatably connected with a wheel shaft (26) through a first bearing (28), two ends of the wheel shaft (26) are provided with walking rollers (29), and wheel grooves (11) for supporting the walking rollers (29) to roll are formed in two sides of the rack (1); the first driven wheel (25) is selectively connected with the wheel shaft (26).
4. The steel pipe inner wall roughening and polishing machine according to claim 2 or 3, wherein: the grinding mechanism (3) is arranged on the mounting plate (21), the grinding mechanism (3) comprises a second motor (31) arranged on the mounting plate (21), and an output shaft of the second motor (31) is sequentially in driving connection with a coupler (32), a grinding rod (35) and a grinding head (36) arranged at the end of the grinding rod (35); one end of the grinding rod (35) close to the coupler (32) is fixed through a plurality of second bearings (34) mounted on the bearing block (33) in parallel, and the bearing block (33) is fixedly mounted on the upper surface of the mounting plate (21).
5. The steel pipeline inner wall roughening and polishing machine as claimed in claim 4, wherein: the fixing mechanism (4) comprises two pairs of speed-increasing rollers (45) for supporting the pipe fitting (5), and each pair of speed-increasing rollers (45) is transversely arranged along the length direction of the rack (1) and is connected with the rack (1) through a roller bracket (46) fixedly connected with the rack (1); and the roller shaft of one of the speed-increasing rollers (45) in each pair of speed-increasing rollers (45) extends outwards and is fixedly connected with a second driven wheel (44), and the second driven wheel (44) is in driving connection with a second driving wheel (42) on the output shaft of a third motor (41) fixedly installed on the rack (1) through a second driving belt (43).
6. The steel pipeline inner wall roughening and polishing machine as claimed in claim 2, wherein: the first driven wheel (25), the first transmission belt (24) and the first driving wheel (23) are chain wheel and chain components or belt wheel and belt components which are in driving connection.
7. The steel pipeline inner wall roughening and polishing machine as claimed in claim 5, wherein: the second driven wheel (44), the second transmission belt (43) and the second driving wheel (42) are chain wheel and chain assemblies in driving connection or belt wheel and belt assemblies.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921679355.2U CN210703931U (en) | 2019-10-09 | 2019-10-09 | Steel pipeline inner wall rough drying polishing machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921679355.2U CN210703931U (en) | 2019-10-09 | 2019-10-09 | Steel pipeline inner wall rough drying polishing machine |
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| CN210703931U true CN210703931U (en) | 2020-06-09 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116276425A (en) * | 2022-12-14 | 2023-06-23 | 常州众山金属科技有限公司 | Intraductal polisher |
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2019
- 2019-10-09 CN CN201921679355.2U patent/CN210703931U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116276425A (en) * | 2022-12-14 | 2023-06-23 | 常州众山金属科技有限公司 | Intraductal polisher |
| CN116276425B (en) * | 2022-12-14 | 2023-09-26 | 常州众山金属科技有限公司 | Intraductal polisher |
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