CN214351306U - Wear-resistant cast iron pipe inner and outer circle grinding device - Google Patents
Wear-resistant cast iron pipe inner and outer circle grinding device Download PDFInfo
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- CN214351306U CN214351306U CN202023207217.XU CN202023207217U CN214351306U CN 214351306 U CN214351306 U CN 214351306U CN 202023207217 U CN202023207217 U CN 202023207217U CN 214351306 U CN214351306 U CN 214351306U
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- carrier roller
- iron pipe
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Abstract
The utility model discloses a grinding device for the inner and outer circles of a wear-resistant cast iron pipe, which belongs to the technical field of steel pipe processing machinery and comprises a mobile unit, a mobile trolley and a slide rail, wherein the mobile trolley is arranged on the slide rail in a sliding manner; the carrier roller assembly is fixed on the movable trolley and comprises a driving carrier roller and a driven carrier roller, and a speed reduction motor is mounted on the driving carrier roller; the lifting mechanism is arranged in the advancing direction of the movable trolley and is mutually independent from the movable unit; the grinding mechanism is arranged on the lifting mechanism, can move up and down along with the lifting mechanism and is provided with a pressure sensor; wherein, elevating system includes: a lead screw motor; the lead screw is connected with the working end of the lead screw motor; the limiting rod is arranged in parallel with the lead screw; the grinding mechanism is arranged on the lead screw and the limiting rod and can move up and down along with the rotation of the lead screw. The grinding device is reasonable and simple in structure, low in manufacturing cost and capable of realizing automatic grinding.
Description
Technical Field
The utility model relates to a steel pipe processing machinery technical field especially relates to a wear-resisting cast iron pipe excircle grinding device.
Background
At present, most of pipelines for water, oil and gas transmission are wear-resistant cast iron pipes. The cast iron pipe cast by any casting process has burrs and burrs to different degrees. In order to ensure the product quality, the inner and outer circles of the cast iron pipe need to be ground before leaving the factory, and various defects generated on the surface of the cast iron pipe more or less in the machining process are removed. The existing cast iron pipe factory always adopts manual work to grind the cast iron pipe, and the manual grinding of the cast iron pipe not only has high labor intensity of workers, but also has low grinding speed and low efficiency, and is not beneficial to batch production.
SUMMERY OF THE UTILITY MODEL
The utility model provides a to prior art not enough, the utility model provides a wear-resisting cast iron pipe excircle grinding device has rational in infrastructure simple, and production low in manufacturing cost can realize the characteristics of automatic grinding.
The utility model adopts the technical proposal that:
wear-resisting cast iron pipe excircle grinding device includes:
the moving unit is provided with a moving trolley and a slide rail, and the moving trolley is arranged on the slide rail in a sliding manner;
the carrier roller assembly is fixed on the movable trolley and comprises a driving carrier roller and a driven carrier roller, and a speed reduction motor is mounted on the driving carrier roller;
the lifting mechanism is arranged in the advancing direction of the movable trolley and is mutually independent from the movable unit;
the grinding mechanism is arranged on the lifting mechanism, can move up and down along with the lifting mechanism and is provided with a pressure sensor;
wherein, elevating system includes:
a lead screw motor;
the lead screw is connected with the working end of the lead screw motor;
the limiting rod is arranged in parallel with the lead screw;
the grinding mechanism is arranged on the lead screw and the limiting rod and can move up and down along with the rotation of the lead screw.
The moving trolley of the grinding device moves back and forth, and the cast iron pipe does circular motion, so that feeding is adjusted. The grinding mechanism is arranged on the lifting mechanism, and the height of the grinding wheel is adjustable up and down, so that the cutting depth of the grinding wheel is adjusted, and the grinding wheel is guaranteed to grind stably. The grinding device is reasonable and simple in structure, low in manufacturing cost and capable of realizing automatic grinding.
In the apparatus for grinding an inner circle and an outer circle of a wear-resistant cast iron pipe disclosed in the present application, the moving unit further includes:
the sliding plate is provided with the sliding rail;
the pulley is arranged below the movable trolley;
the pulley is matched with the sliding rail;
the movable trolley travels on the slide rail through a pulley, and the pulley is driven by a trolley motor fixedly arranged in the movable trolley.
In the wear-resistant cast iron pipe inner and outer circle grinding device disclosed by the application, the driving carrier roller further comprises a carrier roller seat, a carrier roller body and a carrier roller shaft;
the roller carrier shaft is horizontally arranged on the roller carrier seat;
the roller supporting body is sleeved on the roller supporting shaft and is driven to rotate by the roller supporting shaft;
the driven carrier roller is similar to the driving carrier roller in structure.
In the wear-resistant cast iron pipe inner and outer circle grinding device disclosed by the application, the number of the driven carrier rollers is not less than 1 group.
In the wear-resistant cast iron pipe inner and outer circle grinding device disclosed in the application, the lifting mechanism further comprises:
the screw motor is positioned in the lifting base;
the lifting plate is fixed on the lifting base;
the support plate is arranged above the lifting plate, and the lead screw and the limiting rod are arranged between the lifting base and the support plate;
the lifting sliding sleeve is sleeved on the lead screw and can move up and down along with the rotation of the lead screw;
and the limiting sliding sleeve is sleeved on the limiting rod and can slide up and down on the surface of the limiting rod.
In the internal and external circle grinding device for the wear-resistant cast iron pipe, disclosed by the application, the grinding mechanism further comprises a grinding wheel, a grinding wheel shaft, a grinding motor mounting plate and a grinding support rod;
one end of the grinding wheel shaft is provided with a grinding wheel piece, and the other end of the grinding wheel shaft is connected with the grinding motor;
the grinding motor is arranged on the grinding motor mounting plate;
the grinding motor mounting plate is fixedly arranged at one end of the grinding support rod, and the pressure sensor is positioned between the grinding motor mounting plate and the grinding support rod;
the grinding support rod is sleeved on the lifting sliding sleeve and the limiting sliding sleeve.
In the wear-resistant cast iron pipe inside and outside circle grinding device disclosed by the application, the length of the grinding support rod is not less than that of the cast iron pipe.
The utility model has the advantages that:
the utility model discloses a solve prior art's problem, provide a wear-resisting cast iron pipe excircle grinding device, include: the moving unit is provided with a moving trolley and a slide rail, and the moving trolley is arranged on the slide rail in a sliding manner; the carrier roller assembly is fixed on the movable trolley and comprises a driving carrier roller and a driven carrier roller, and a speed reduction motor is mounted on the driving carrier roller; the lifting mechanism is arranged in the advancing direction of the movable trolley and is mutually independent from the movable unit; the grinding mechanism is arranged on the lifting mechanism, can move up and down along with the lifting mechanism and is provided with a pressure sensor; wherein, elevating system includes: a lead screw motor; the lead screw is connected with the working end of the lead screw motor; the limiting rod is arranged in parallel with the lead screw; the grinding mechanism is arranged on the lead screw and the limiting rod and can move up and down along with the rotation of the lead screw. The movable trolley is provided with a carrier roller assembly capable of automatically rotating, and the speed is adjustable. The cast iron pipe does circular motion while the moving trolley moves forwards and backwards, so that feeding is adjusted. The grinding mechanism is arranged on the lifting mechanism, and the height of the grinding wheel is adjustable up and down, so that the cutting depth of the grinding wheel is adjusted, and the grinding wheel is guaranteed to grind stably. The grinding device has the advantages of reasonable and simple structure, easy production and manufacture, low cost, wide adaptability, flexibility, convenient use and capability of realizing automatic grinding, and can be widely applied to grinding of inner and outer circles of cast iron pipes. And the grinding treatment efficiency of the inner circle and the outer circle of the cast iron pipe is high, and the quality is good.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described 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 creative efforts.
Fig. 1 is a schematic structural diagram i of a grinding device for inner and outer circles of a wear-resistant cast iron pipe of the present invention;
FIG. 2 is a schematic structural view II of the grinding device for the inner and outer circles of the wear-resistant cast iron pipe of the present invention;
FIG. 3 is a front view of FIG. 1;
fig. 4 is a schematic structural view of the grinding mechanism.
Reference numerals: the device comprises a moving unit 1, a carrier roller component 2, a cast iron pipe 3, a lifting mechanism 4, a grinding mechanism 5, a moving trolley 11, a sliding plate 12, a pulley 13, a sliding rail 14, a driving carrier roller 21, a driven carrier roller 22, a carrier roller seat 23, a carrier roller body 24, a carrier roller shaft 25, a speed reducing motor 26, a lifting base 41, a lifting seat 42, a support plate 43, a lead screw motor 44, a lead screw 45, a limiting rod 46, a lifting sliding sleeve 47, a limiting sliding sleeve 48, a grinding wheel piece 51, a grinding wheel shaft 52, a grinding motor 53, a grinding motor mounting seat 54, a pressure sensor 55 and a grinding support rod 56.
Detailed Description
In the following, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention. Accordingly, the drawings and description are to be regarded as illustrative in nature, and not as restrictive.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral connections; they may be mechanically or electrically connected, directly or indirectly through intervening media, or may be interconnected within two elements or in an interactive relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
In the production, manufacturing and processing processes of the wear-resistant cast iron pipe, burrs and rough edges exist to different degrees. In order to ensure the product quality, the inner and outer circles of the cast iron pipe need to be ground before leaving the factory, and various defects generated on the surface of the cast iron pipe more or less in the machining process are removed. The existing cast iron pipe factory always adopts manual work to grind the cast iron pipe, and the manual grinding of the cast iron pipe not only has high labor intensity of workers, but also has low grinding speed and low efficiency, and is not beneficial to batch production.
In order to solve the problems of the prior art, the utility model provides a wear-resisting cast iron pipe inner and outer circle grinding device, its structure is as shown in attached figure 1~ 4. The grinding device includes:
the mobile unit 1 is arranged on the ground and has a mobile car 11 and a slide rail 12. The movable trolley 11 is arranged on the slide rail 12 in a sliding manner, and the cast iron pipe 3 can move back and forth on the slide rail 12 along with the movable trolley 11.
And the carrier roller assembly 2 is used for supporting and rotating the cast iron pipe 3 and keeping the stability of the cast iron pipe 3 during grinding. The idler assembly 2 is fixed on the movable trolley 11 and comprises a driving idler 21 and a driven idler 22. The driving idler 21 and the driven idler 22 are used in pairs, with their idler axes parallel to each other and with their axes parallel to the axis of the cast iron pipe 3. The driving carrier roller 21 is provided with a speed reducing motor 26, the speed reducing motor 26 provides driving force for the driving carrier roller 21 and can drive the cast iron pipe 3 to rotate, and the driven carrier roller 22 is driven to rotate while the cast iron pipe 3 rotates, so that the rotating stability of the cast iron pipe 3 is ensured.
And the lifting mechanism 4 is installed in the moving direction of the moving trolley 11. The lifting mechanism 4 is independent of the moving unit 1. The moving unit 1 drives the cast iron pipe 3 to move back and forth, and automatic feeding in the grinding process is guaranteed. The height of the lifting mechanism 4 can be adjusted up and down, thereby adjusting the cutting depth of grinding.
And the grinding mechanism 5 is used for grinding the inner circle and the outer circle of the cast iron pipe. The grinding mechanism 5 is arranged on the lifting mechanism 4 and can move up and down along with the lifting mechanism 4, the optimal grinding position of the grinding mechanism 5 is adjusted, and stable grinding is guaranteed. The grinding mechanism 5 is provided with a pressure sensor 55. The pressure sensor 55 is used for acquiring the information of the grinding pressure of the grinding mechanism 5 on the cast iron pipe 3 in real time, so as to adjust the grinding cutting depth and the grinding speed.
Wherein, elevating system 4 includes lead screw motor 44, lead screw 45, and gag lever post 46. The lead screw 45 is connected to the working end of the lead screw motor 44. The stopper rod 46 is arranged in parallel with the lead screw 45. The grinding mechanism 5 is arranged on a lead screw 45 and a limiting rod 46, the lead screw 45 is driven by a lead screw motor 44 to rotate, and the grinding mechanism 5 moves up and down along with the rotation of the lead screw 45. The limiting rod 46 is used for limiting the grinding direction of the grinding mechanism 5, preventing the grinding mechanism 5 from deviating during grinding work, and ensuring stable grinding of the cast iron pipe 3.
In one embodiment, the mobile unit 1 further comprises a slide 12 and a pulley 13. The slide plate 12 is provided with a slide rail 14. At least two pairs of pulleys 13 are arranged below the movable trolley 11. The pulley 13 is matched with the sliding rail 14, and the pulley 13 rolls along the sliding rail 14 in a matching way. The movable trolley 11 runs on the slide rail 14 through the pulley 13, and the pulley 13 is driven by a trolley motor fixedly arranged in the movable trolley 11. The trolley motor is connected to the pulley 13 of the moving trolley 11, and controls the traveling speed of the moving trolley 11 while providing power for the pulley 13.
In one embodiment, the driving idler 21 further comprises an idler seat 23, an idler body 24, and an idler shaft 25. The driven idler 22 is similar in structure to the driving idler 21. The carrier roller shaft 25 is horizontally arranged on the carrier roller base 23. The carrier body 24 is sleeved on the carrier roller shaft 25 and is driven to rotate by the carrier roller shaft 25. The speed reducing motor 26 on the driving carrier roller 21 is connected with the carrier roller shaft 25 and provides power for the carrier roller shaft 25 to drive the carrier roller body 24 to rotate, so that the cast iron pipe 3 placed on the carrier roller assembly 2 rotates, and the cast iron pipe 3 can do circular motion along with the carrier roller assembly 2 while the moving trolley 11 moves back and forth.
In one embodiment, the number of the driven idlers 22 is not less than 1, and the number of the driven idlers 22 may be set according to the length of the cast iron pipe 3 to ensure smooth rotation of the cast iron pipe 3 on the idler assembly 2.
In one embodiment, the lifting mechanism 4 further comprises a lifting base 41, a lifting base 42, a fulcrum plate 43, a lifting sliding sleeve 47 and a limit sliding sleeve 48. The elevating base 42 is fixed to the elevating base 41. A fulcrum plate 43 is mounted above the lift block 42. The lead screw motor 44 is positioned in the lifting base 41 and provides power for the lead screw 45. The lead screw 45 and the stopper rod 46 are provided perpendicular to the lifting base 41. The lead screw 45 and the limiting rod 46 are arranged between the lifting base 41 and the support plate 43. The lifting sliding sleeve 47 is sleeved on the screw 45 and can move up and down along with the rotation of the screw 45. The limiting sliding sleeve 48 is sleeved on the limiting rod 46 and can slide up and down on the surface of the limiting rod 46.
In one embodiment, the grinding mechanism 5 further includes a grinding wheel 51, a grinding wheel shaft 52, a grinding motor 53, a grinding motor mounting plate 54, and a grinding support bar 56. The grinding wheel spindle 52 has a grinding wheel 51 mounted at one end thereof and a grinding motor 53 connected to the other end thereof. The grinding wheel 51 is mounted on the grinding wheel spindle 52 by means of bolts. The grinding motor 53 is provided on the grinding motor mounting plate 54. A grinding motor mounting plate 54 is fixedly disposed at one end of a grinding support rod 56. The pressure sensor 55 is located between the grinding motor mounting plate 54 and the support rod 56. During grinding, the grinding wheel 51 is in contact with the cast iron pipe 3 to generate grinding pressure, the grinding motor mounting plate 54 applies reaction force to the grinding support rod 56, and the pressure sensor 55 can monitor the pressure between the grinding motor mounting plate 54 and the grinding support rod 56, so as to monitor the pressure between the grinding wheel 51 and the cast iron pipe 3, and further adjust the grinding bite and the grinding speed. The grinding support rod 56 is sleeved on the lifting sliding sleeve 47 and the limiting sliding sleeve 48. The grinding support rod 56 can move along with the lifting sliding sleeve 47 to adjust the grinding height of the grinding wheel 51, and can also slide on the limiting rod 46 along with the limiting sliding sleeve 48 to adjust the grinding direction of the grinding wheel 51, so that the cutting depth of the grinding wheel is adjusted, and the grinding wheel is guaranteed to be stably ground. The grinding motor 53 is used as a power mechanism to provide power for the grinding wheel 51. The grinding wheel 51 is driven by a grinding motor 53 to rotate around the axis thereof, so as to grind the inner circle and the outer circle of the cast iron pipe. The grinding wheel 51 grinds the inner and outer circles of the cast iron pipe in a dry grinding manner. The grinding wheel 51 has high hardness, excellent heat resistance and toughness, can grind the inner circle and the outer circle of the cast iron pipe by adopting a dry grinding mode, does not need to add water in the grinding process, is easy to collect scraps, and is not easy to cause environmental pollution. After the grinding wheel 51 is used for a period of time, the friction loss causes the diameter to become small, the probability of grinding errors becomes large, and the grinding wheel 51 can be replaced by loosening the bolts.
In one embodiment, the length of the grinding support rod 56 is not less than the length of the cast iron pipe 3 to ensure that the grinding mechanism 5 can grind the entire cast iron pipe 3.
The utility model discloses a wear-resisting cast iron pipe excircle grinding device's working method:
when the trolley works, the cast iron pipe 3 is placed on the carrier roller component 2, the trolley motor is started, the trolley motor drives the movable trolley 11 to move on the slide rail 13, and meanwhile, the advancing speed of the movable trolley 11 is controlled. The speed reducing motor 26 is started, the carrier roller assembly 2 drives the cast iron pipe 3 to rotate, and the cast iron pipe 3 makes circular motion along with the carrier roller assembly 2 while the moving trolley 11 moves forwards and backwards. The lifting mechanism 4 adjusts the height to the optimum grinding position of the grinding wheel 51. During grinding, the lower part of the grinding wheel 51 is contacted with the surface of the inner circle and the outer circle of the cast iron pipe 3, the grinding motor 53 is started, and the grinding wheel 51 is driven by the grinding motor 53 to grind the surface of the inner circle and the outer circle of the cast iron pipe 3.
Based on above-mentioned each embodiment, the utility model discloses wear-resisting cast iron pipe excircle grinding device has following advantage: the grinding device has the advantages of reasonable and simple structure, easy production and manufacture, low cost, wide adaptability and capability of realizing automatic grinding. The utility model provides a wear-resisting cast iron pipe excircle grinding device is provided with bearing roller subassembly 2 that can autogiration on travelling car 11 to speed is adjustable. The cast iron pipe 3 is ensured to do circular motion while the moving trolley 11 moves forwards and backwards, thereby adjusting feeding. The grinding mechanism 5 is arranged on the lifting mechanism 4, and the height of the grinding wheel 51 can be adjusted up and down, so that the cutting depth of the grinding wheel 51 can be adjusted, and the grinding wheel 51 can be ensured to grind the cast iron pipe 3 stably.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. Wear-resisting cast iron pipe excircle grinding device, its characterized in that includes:
the mobile unit (1) is provided with a mobile trolley (11) and a slide rail (14), wherein the mobile trolley (11) is arranged on the slide rail (14) in a sliding manner;
the carrier roller assembly (2) is fixed on the mobile trolley (11) and comprises a driving carrier roller (21) and a driven carrier roller (22), and a speed reduction motor (26) is mounted on the driving carrier roller (21);
a lifting mechanism (4) which is installed in the advancing direction of the mobile trolley (11) and is independent of the mobile unit (1);
the grinding mechanism (5) is arranged on the lifting mechanism (4), can move up and down along with the lifting mechanism (4) and is provided with a pressure sensor (55);
wherein the lifting mechanism (4) comprises:
a screw motor (44);
the lead screw (45) is connected with the working end of the lead screw motor (44);
a limiting rod (46) arranged in parallel with the lead screw (45);
the grinding mechanism (5) is arranged on the screw rod (45) and the limiting rod (46) and can move up and down along with the rotation of the screw rod (45).
2. The apparatus for round grinding inside and outside a wear-resistant cast iron pipe as claimed in claim 1, wherein said moving unit (1) further comprises:
the sliding plate (12), the sliding rail (14) is arranged on the sliding plate (12);
a pulley (13) mounted below the mobile cart (11);
the pulley (13) is matched with the sliding rail (14);
the movable trolley (11) travels on the sliding rail (14) through a pulley (13), and the pulley (13) is driven by a trolley motor fixedly arranged in the movable trolley (11).
3. The grinding device for the inner and outer circles of wear-resistant cast iron pipes as claimed in claim 1 or 2, characterized in that the driving idler (21) further comprises an idler seat (23), an idler body (24) and an idler shaft (25);
the carrier roller shaft (25) is horizontally arranged on the carrier roller seat (23);
the roller carrier body (24) is sleeved on the roller carrier shaft (25) and is driven to rotate by the roller carrier shaft (25);
the driven carrier roller (22) and the driving carrier roller (21) have the same structure.
4. The apparatus for grinding the inner and outer circumferences of wear-resistant cast iron pipes as set forth in claim 3, wherein the number of the driven rolls (22) is not less than 1 set.
5. The apparatus for grinding the inside and outside circles of a wear-resistant cast iron pipe as set forth in claim 1, wherein the elevating mechanism (4) further comprises:
the lifting base (41), the screw motor (44) is positioned in the lifting base (41);
a lifting plate (42) fixed on the lifting base (41);
the support plate (43) is arranged above the lifting plate (42), and the lead screw (45) and the limiting rod (46) are arranged between the lifting base (41) and the support plate (43);
the lifting sliding sleeve (47) is sleeved on the screw rod (45) and can move up and down along with the rotation of the screw rod (45);
and the limiting sliding sleeve (48) is sleeved on the limiting rod (46) and can slide up and down on the surface of the limiting rod (46).
6. The inside and outside grinding apparatus for abrasion-resistant cast iron pipe according to claim 5, wherein said grinding mechanism (5) further comprises a grinding wheel (51), a grinding wheel spindle (52), a grinding motor (53), a grinding motor mounting plate (54) and a grinding support bar (56);
one end of the grinding wheel shaft (52) is provided with a grinding wheel (51), and the other end of the grinding wheel shaft is connected with the grinding motor (53);
the grinding motor (53) is arranged on the grinding motor mounting plate (54);
the grinding motor mounting plate (54) is fixedly arranged at one end of the grinding support rod (56), and the pressure sensor (55) is arranged between the grinding motor mounting plate (54) and the grinding support rod (56);
the grinding support rod (56) is sleeved on the lifting sliding sleeve (47) and the limiting sliding sleeve (48).
7. The apparatus for grinding the inside and outside circumferences of wear-resistant cast iron pipes as claimed in claim 6, wherein the length of the grinding support rod (56) is not less than the length of the cast iron pipe (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023207217.XU CN214351306U (en) | 2020-12-28 | 2020-12-28 | Wear-resistant cast iron pipe inner and outer circle grinding device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023207217.XU CN214351306U (en) | 2020-12-28 | 2020-12-28 | Wear-resistant cast iron pipe inner and outer circle grinding device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214351306U true CN214351306U (en) | 2021-10-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023207217.XU Active CN214351306U (en) | 2020-12-28 | 2020-12-28 | Wear-resistant cast iron pipe inner and outer circle grinding device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214351306U (en) |
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2020
- 2020-12-28 CN CN202023207217.XU patent/CN214351306U/en active Active
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Address after: 610000 No. 939, Tianxing Avenue, Qingbaijiang District, Chengdu, Sichuan Patentee after: SICHUAN WEIZHEN HI-TECH MATERIAL CO.,LTD. Address before: 610000 China (Sichuan) pilot Free Trade Zone, Chengdu, Sichuan 1509 xiangdao Avenue, Qingbaijiang District, Chengdu (a0412-a0413, 4th floor, area a, Chengdu International Railway Port) Patentee before: SICHUAN WEIZHEN HI-TECH MATERIAL CO.,LTD. |