CN114633986B - Welding-free bearing block carrier roller and processing equipment thereof - Google Patents
Welding-free bearing block carrier roller and processing equipment thereof Download PDFInfo
- Publication number
- CN114633986B CN114633986B CN202210474909.5A CN202210474909A CN114633986B CN 114633986 B CN114633986 B CN 114633986B CN 202210474909 A CN202210474909 A CN 202210474909A CN 114633986 B CN114633986 B CN 114633986B
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- Prior art keywords
- carrier roller
- cavity
- roller body
- sliding
- pressing
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Links
- 238000007723 die pressing method Methods 0.000 claims abstract description 23
- 238000003825 pressing Methods 0.000 claims description 48
- 230000000149 penetrating effect Effects 0.000 claims description 14
- 238000003860 storage Methods 0.000 claims description 12
- 230000002457 bidirectional effect Effects 0.000 claims description 3
- 238000009434 installation Methods 0.000 description 5
- 238000003466 welding Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 3
- 238000000465 moulding Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000013590 bulk material Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G15/00—Conveyors having endless load-conveying surfaces, i.e. belts and like continuous members, to which tractive effort is transmitted by means other than endless driving elements of similar configuration
- B65G15/60—Arrangements for supporting or guiding belts, e.g. by fluid jets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D7/00—Bending rods, profiles, or tubes
- B21D7/06—Bending rods, profiles, or tubes in press brakes or between rams and anvils or abutments; Pliers with forming dies
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G39/00—Rollers, e.g. drive rollers, or arrangements thereof incorporated in roller-ways or other types of mechanical conveyors
- B65G39/02—Adaptations of individual rollers and supports therefor
- B65G39/09—Arrangements of bearing or sealing means
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Bending Of Plates, Rods, And Pipes (AREA)
- Mounting Of Bearings Or Others (AREA)
Abstract
The invention discloses a welding-free bearing seat carrier roller and processing equipment thereof, which comprise a carrier roller body, wherein the inner surface of the carrier roller body is provided with a step surface, the surface of the step surface is provided with a bearing seat through a die pressing head, the inner surface of the bearing seat is provided with a bearing, the inner surface of the bearing is rotationally connected with a roller, the step surface is arranged at one end of the carrier roller body, the bearing seat is arranged on the inner surface of the step surface, and the top end of the carrier roller body is pressed and deformed in a die pressing mode, so that the bearing seat is wrapped, and the carrier roller manufactured in the mode can improve the tightness and the connection strength of the carrier roller.
Description
Technical Field
The invention relates to the technical field of carrier rollers, in particular to a welding-free bearing seat carrier roller and processing equipment thereof.
Background
In the bulk material conveying field of each industry, the carrier roller is used as a key component with the largest consumption, the performance and the manufacturing process of the carrier roller are particularly important, the existing carrier roller bearing seat and the roller body are spliced by a welding method, the welding deformation and the existence of welding stress can influence the bonding strength among the components, meanwhile, smoke dust generated in the welding process also causes certain pollution to the working environment, and the welding heat causes the performance change of a sealing assembly and a bearing during the further continuous assembly process, so that the using effect is finally influenced.
Disclosure of Invention
The invention aims to provide a welding-free bearing seat carrier roller and processing equipment thereof, wherein a step surface is arranged at one end of a carrier roller body, a bearing seat is arranged on the inner surface of the step surface, and the top end of the carrier roller body is pressed and deformed in a mould pressing mode, so that the bearing seat is wrapped, and the sealing performance and the connecting strength of the carrier roller manufactured in the mode can be improved.
The aim of the invention can be achieved by the following technical scheme:
The welding-free bearing seat carrier roller comprises a carrier roller body, wherein the inner surface of the carrier roller body is provided with a step surface, the surface of the step surface is provided with a bearing seat through a die pressing head, the inner surface of the bearing seat is provided with a bearing, and the inner surface of the bearing is rotationally connected with a roller;
The bottom of the die pressing head is provided with a die pressing cavity, the top of the inner cavity of the die pressing cavity is provided with a mounting cavity in a penetrating mode, the inner side wall of the die pressing cavity is provided with an inclined surface, and the inclined angle of the inclined surface is 60-89 degrees.
As a further scheme of the invention: the automatic clamping device comprises a workbench, wherein a pressing table is fixedly connected to the top of the workbench, an electric telescopic rod is fixedly connected to the top of the pressing table, the output end of the electric telescopic rod penetrates through the pressing table and extends to the outside of the pressing table, the output end of the electric telescopic rod is fixedly connected with a pressing plate, a die pressing head is connected to the bottom of the pressing plate, through holes are formed in the periphery of the top of the pressing plate in a penetrating mode, a connecting frame is arranged on the inner surface of a mounting cavity, the outer surface of the connecting frame is in sliding connection with the inner surface of the through holes, a clamping head is connected to the top of the connecting frame, and a storage box is arranged on the top of the workbench in a penetrating mode.
As a further scheme of the invention: the sliding grooves are formed in two sides of the top of the lower pressing plate, the inner surfaces of the sliding grooves are connected with U-shaped sliding blocks in a sliding mode, and the tops of the U-shaped sliding blocks are in contact with the bottoms of the clamping heads.
As a further scheme of the invention: the bottom of workstation inner chamber fixedly connected with cylinder, the output of cylinder runs through the storage box and extends to the inside of storage box, the output fixedly connected with push pedal of cylinder.
As a further scheme of the invention: two sides of the top of the workbench are connected with clamping blocks for clamping the carrier roller body in a sliding manner.
As a further scheme of the invention: the utility model discloses a workbench, including workstation top, clamp splice, slide bar, screw hole, slide bar and slide bar are all fixedly connected with installation riser in the both sides at workstation top and be located the relative one side that keeps away from of two clamp splice, two rotation bar and slide bar have set gradually from front to back between the relative one side of installation riser, two slide hole has all been run through to one side of clamp splice, two screw hole has all been run through to the opposite side of clamp splice, the surface and the internal surface sliding connection of slide hole of slide bar, the rotation bar is located the inside of screw hole.
As a further scheme of the invention: the external surface of dwang has seted up two-way screw thread, two-way screw thread and the interior surface looks adaptation of screw hole.
As a further scheme of the invention: the outer surface of the sliding rod and the space between the two clamping blocks are sleeved with springs.
The invention has the beneficial effects that:
(1) According to the invention, the step surface is arranged at one end of the carrier roller body, the bearing seat is arranged on the inner surface of the step surface, and the top end of the carrier roller body is pressed and deformed in a mould pressing mode, so that the bearing seat is wrapped, and the carrier roller manufactured in the mode can improve the tightness and the connection strength.
(2) According to the invention, the lower pressing plate is connected with the die pressing head, the inner surface of the carrier roller body is pushed by the die pressing cavity with an inclined angle in the die pressing head, so that the top end of the carrier roller body is completely inwards, after the die pressing head is continuously pressed down, the top end of the carrier roller body is contacted with the top of the inner cavity of the die pressing cavity, so that the carrier roller body is bent to 90 degrees, the bearing seat is wrapped, and the bearing seat is connected in the way.
(3) According to the invention, through the through holes arranged above the lower pressing plate in a penetrating manner, the U-shaped sliding blocks in the sliding grooves are used for supporting the clamping heads to connect the die pressing heads in a matching manner with the connection relationship between the connecting frames and the mounting cavity, the die pressing heads are convenient to disassemble, assemble and replace, so that the die pressing heads with different specifications are replaced, the die pressing heads are suitable for carrier rollers with different diameters, the lifting pushing plate is arranged in the storage box, the carrier rollers with different heights can be suitable, and the practicability of the die pressing heads is further improved.
Drawings
The invention is further described below with reference to the accompanying drawings.
Fig. 1 is a partial structural cross-sectional view of a carrier roller body of the present invention;
FIG. 2 is a schematic view of the mounting of a bearing housing in accordance with the present invention;
FIG. 3 is a schematic view of the external structure of the processing apparatus of the present invention;
FIG. 4 is a partial cross-sectional view of a processing apparatus according to the present invention;
FIG. 5 is an enlarged view of the structure of portion A of FIG. 4 in accordance with the present invention;
Fig. 6 is a partial structural cross-sectional view of a clamping block in accordance with the present invention.
In the figure: 1. a carrier roller body; 2. a roller; 3. a step surface; 4. a molding press; 41. a molding cavity; 42. a mounting cavity; 5. a bearing; 6. a bearing seat; 7. a work table; 8. a pressing table; 9. an electric telescopic rod; 10. a lower pressing plate; 11. a guide post; 12. a through hole; 13. a connecting frame; 14. a sliding groove; 15. a U-shaped slider; 16. clamping blocks; 17. a storage box; 18. a cylinder; 19. a push plate; 20. a sliding hole; 21. a slide bar; 22. a spring; 23. installing a vertical plate; 24. a threaded hole; 25. a rotating lever; 26. a bi-directional thread; 27. a chuck.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1-6, the invention discloses a welding-free bearing seat carrier roller, which comprises a carrier roller body 1, wherein the inner surface of the carrier roller body 1 is provided with a step surface 3, the surface of the step surface 3 is pressed with a bearing seat 6 through a die pressing head 4, the inner surface of the bearing seat 6 is provided with a bearing 5, and the inner surface of the bearing 5 is rotationally connected with a roller 2;
the bottom of mould pressing head 4 has seted up mould pressing chamber 41, the top of mould pressing chamber 41 inner chamber has run through and has seted up installation cavity 42, the inside wall of mould pressing chamber 41 sets up to the inclined plane to the inclination of inclined plane is 75.
The carrier roller body 1 in the invention can wrap the bearing seat 6 in a mould pressing mode, and can wrap the bearing seat 6 in a spinning mode.
The invention also provides processing equipment of the welding-free bearing seat carrier roller, which comprises a workbench 7, wherein the top of the workbench 7 is fixedly connected with a pressing down table 8, the top of the pressing down table 8 is fixedly connected with an electric telescopic rod 9, the output end of the electric telescopic rod 9 penetrates through the pressing down table 8 and extends to the outside of the pressing down table 8, the output end of the electric telescopic rod 9 is fixedly connected with a pressing down plate 10, the bottom of the pressing down plate 10 is connected with a die pressing head 4, through holes 12 are formed in the periphery of the top of the pressing down plate 10 in a penetrating way, a connecting frame 13 is arranged on the inner surface of the through holes 12, the outer surface of the connecting frame 13 is in contact with the inner surface of a mounting cavity 42, the top of the connecting frame 13 is connected with a clamping head 27, and a storage box 17 is arranged on the top of the workbench 7 in a penetrating way.
The sliding grooves 14 are formed in two sides of the top of the lower pressing plate 10, the inner surfaces of the sliding grooves 14 are slidably connected with U-shaped sliding blocks 15, the tops of the U-shaped sliding blocks 15 are in contact with the bottoms of clamping heads 27, an air cylinder 18 is fixedly connected to the bottom of an inner cavity of the workbench 7, the output end of the air cylinder 18 penetrates through the storage box 17 and extends to the inside of the storage box 17, and a push plate 19 is fixedly connected to the output end of the air cylinder 18.
The utility model discloses a roller, including workstation 7, clamp pad, clamping plate, slide bar, slide hole 20 has all been run through to the both sides sliding connection at workstation 7 top, the both sides at workstation 7 top just are located two clamp pad 16 and keep away from relative one side equal fixedly connected with installation riser 23, two have set gradually dwang 25 and slide bar 21 from front to back between the one side that installation riser 23 is relative, two slide hole 20 has all been run through to one side of clamp pad 16, two screw hole 24 has all been run through to the opposite side of clamp pad 16, slide bar 21's surface and slide hole 20's internal surface sliding connection, dwang 25 is located screw hole 24's inside.
The guide posts 11 are arranged around the top of the lower pressing plate 10 in a penetrating manner, the top ends of the guide posts 11 are fixedly connected with the top of the inner cavity of the lower pressing plate 8, the bottom ends of the guide posts 11 are fixedly connected with the top of the workbench 7, the outer surface of the rotating rod 25 is provided with two-way threads 26, the two-way threads 26 are matched with the inner surface of the threaded hole 24, and the outer surface of the sliding rod 21 is sleeved with a spring 22 between two clamping blocks 16.
The processing method of the bearing block carrier roller comprises the following steps: firstly, the carrier roller body 1 is vertically placed in the storage box 17 and is in contact with the top surface of the push plate 19, then the cylinder 18 is started to extend, so that the top end of the carrier roller body 1 extends out of the workbench 7 for a certain distance and is higher than the height of the clamping blocks 16, then the rotating rod 25 is matched with the bidirectional threads 26 and the threaded holes 24, the two clamping blocks 16 move to one relatively close side, the sliding rod 21 slides on the inner surface of the sliding hole 20, meanwhile, the clamping blocks 16 are tightly attached to the surface of the carrier roller body 1 under the action of the spring 22, the bearing seat 6 is embedded into the step surface 3 of the carrier roller body 1, at the moment, the die pressing head 4 with proper specification is selected to be placed at the bottom of the lower pressing plate 10, the connecting frame 13 penetrates through the mounting cavity 42 and the penetrating hole 12, then the clamping head 27 is clamped at the top end of the connecting frame 13, at the moment, the U-shaped sliding block 15 in the sliding groove 14 is pushed, the U-shaped sliding block 15 is contacted with the bottom of the clamping head 27, then the electric telescopic rod 9 is started to extend, the outer surface of the sliding rod 21 slides downwards, meanwhile, the bearing seat 10 is pushed to slide downwards on the outer surface of the guide post 11, the bearing seat 1 is simultaneously, the bearing seat 6 is tightly attached to the surface of the carrier roller body 1, the carrier roller body 1 is deformed, and the inner surface 1 is deformed, and the top end 1 is bent, and the carrier roller body 1 is deformed, and the top surface is bent, and the inner surface 1 is bent, and the carrier roller body 1 is bent.
In the description of the present invention, it should be understood that the terms "upper," "lower," "left," "right," and the like indicate an orientation or a positional relationship based on that shown in the drawings, and are merely for convenience of description and for simplifying the description, and do not indicate or imply that the apparatus or element in question must have a specific orientation, as well as a specific orientation configuration and operation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
The foregoing describes one embodiment of the present invention in detail, but the description is only a preferred embodiment of the present invention and should not be construed as limiting the scope of the invention. All equivalent changes and modifications within the scope of the present invention are intended to be covered by the present invention.
Claims (6)
1. The processing equipment of welding-free bearing seat carrier roller is characterized by comprising a workbench (7), wherein a pressing table (8) is fixedly connected to the top of the workbench (7), an electric telescopic rod (9) is fixedly connected to the top of the pressing table (8), the output end of the electric telescopic rod (9) penetrates through the pressing table (8) and extends to the outside of the pressing table (8), the output end of the electric telescopic rod (9) is fixedly connected with a pressing plate (10), the bottom of the pressing plate (10) is connected with a die pressing head (4), through holes (12) are formed in the periphery of the top of the pressing plate (10) in a penetrating mode, connecting frames (13) are arranged on the inner surfaces of the through holes (12), clamping heads (27) are connected to the top of the connecting frames (13), and a storage box (17) is arranged on the top of the workbench (7) in a penetrating mode;
the bottom of the mould pressing head (4) is provided with a mould pressing cavity (41), the top of the inner cavity of the mould pressing cavity (41) is provided with a mounting cavity (42) in a penetrating way, the inner side wall of the mould pressing cavity (41) is provided with an inclined surface, the inclined angle of the inclined surface is 60-89 degrees, and the outer surface of the connecting frame (13) is contacted with the inner surface of the mounting cavity (42);
The carrier roller comprises a carrier roller body (1), wherein a step surface (3) is arranged on the inner surface of the carrier roller body (1), a bearing seat (6) is pressed on the surface of the step surface (3) through a die pressing head (4), a bearing (5) is arranged on the inner surface of the bearing seat (6), and a roller (2) is rotatably connected to the inner surface of the bearing (5);
the bottom of the mould pressing head (4) is provided with a mould pressing cavity (41), the top of the inner cavity of the mould pressing cavity (41) is provided with a mounting cavity (42) in a penetrating way, the inner side wall of the mould pressing cavity (41) is provided with an inclined surface, and the inclined angle of the inclined surface is 75 degrees;
After the inner surface of the mould pressing cavity (41) is contacted with the carrier roller body (1), the inner surface of the mould pressing cavity (41) is an inclined surface, and at the moment, the top end of the carrier roller body (1) is inwards bent, so that the carrier roller body (1) is extruded, the top end of the carrier roller body (1) is deformed, and the bearing seat (6) in the carrier roller body (1) is fixed.
2. The processing device of the welding-free bearing support roller according to claim 1, wherein sliding grooves (14) are formed in two sides of the top of the lower pressing plate (10), a U-shaped sliding block (15) is connected to the inner surface of the sliding groove (14) in a sliding mode, and the top of the U-shaped sliding block (15) is in contact with the bottom of a clamping head (27).
3. The processing device of the welding-free bearing support roller according to claim 1, wherein an air cylinder (18) is fixedly connected to the bottom of the inner cavity of the workbench (7), the output end of the air cylinder (18) penetrates through the storage box (17) and extends into the storage box (17), and a push plate (19) is fixedly connected to the output end of the air cylinder (18).
4. The processing device of the welding-free bearing support roller according to claim 1, wherein clamping blocks (16) used for clamping the support roller body (1) are connected to two sides of the top of the workbench (7) in a sliding manner.
5. The processing equipment for the welding-free bearing seat carrier roller according to claim 1, wherein two sides of the top of the workbench (7) and one side, which is relatively far away from the two clamping blocks (16), are fixedly connected with mounting vertical plates (23), a rotating rod (25) and a sliding rod (21) are sequentially arranged between the opposite sides of the two mounting vertical plates (23) from front to back, one side of each clamping block (16) is provided with a sliding hole (20) in a penetrating manner, the other side of each clamping block (16) is provided with a threaded hole (24) in a penetrating manner, the outer surface of each sliding rod (21) is in sliding connection with the inner surface of each sliding hole (20), and each rotating rod (25) is positioned in the threaded hole (24);
The outer surface of the rotating rod (25) is provided with a bidirectional thread (26), and the bidirectional thread (26) is matched with the inner surface of the threaded hole (24).
6. The processing device of the welding-free bearing support roller according to claim 5, wherein a spring (22) is sleeved on the outer surface of the sliding rod (21) and positioned between the two clamping blocks (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210474909.5A CN114633986B (en) | 2022-04-29 | 2022-04-29 | Welding-free bearing block carrier roller and processing equipment thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210474909.5A CN114633986B (en) | 2022-04-29 | 2022-04-29 | Welding-free bearing block carrier roller and processing equipment thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114633986A CN114633986A (en) | 2022-06-17 |
| CN114633986B true CN114633986B (en) | 2024-07-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210474909.5A Active CN114633986B (en) | 2022-04-29 | 2022-04-29 | Welding-free bearing block carrier roller and processing equipment thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114633986B (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201842473U (en) * | 2010-11-01 | 2011-05-25 | 黄石市蓝天除尘设备制造有限公司 | Fillet press-fit type groove-shaped drum |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5079816A (en) * | 1990-09-20 | 1992-01-14 | Electric Power Research Institute, Inc. | Positive seal coupling internal joining press |
| JP3829561B2 (en) * | 1999-12-24 | 2006-10-04 | 富士通株式会社 | Manufacturing method of metal plate parts by pressing device |
| CN201026561Y (en) * | 2007-03-20 | 2008-02-27 | 永城煤电集团有限责任公司 | Hydraulic pressure type bearing disassembly and assembly machine for maintaining supporting roller |
| CN203906791U (en) * | 2014-05-30 | 2014-10-29 | 淮北矿业相山水泥有限责任公司 | Vertical mill grinding roller air sealing piece |
| CN206088210U (en) * | 2016-08-19 | 2017-04-12 | 董世军 | Exempt from welding equipment bearing roller |
| CN107755985A (en) * | 2017-11-17 | 2018-03-06 | 抚顺东旭精工制辊科技有限公司 | A kind of weldless full assembled roller manufacturing process |
| CN108992017B (en) * | 2018-07-24 | 2021-08-03 | 浙江章华保健美发实业有限公司 | Household glass bottle label removing device |
| CN112917132B (en) * | 2019-12-06 | 2023-05-12 | 南京宝地梅山产城发展有限公司 | Device for assembling carrier roller |
| CN113602764B (en) * | 2021-08-09 | 2023-01-24 | 江西铭邑机械设备有限公司 | Wear-resisting type bearing roller |
| CN113695824B (en) * | 2021-09-16 | 2023-06-23 | 衡阳华泰建筑工程有限责任公司 | Lattice column welding auxiliary device for building construction |
-
2022
- 2022-04-29 CN CN202210474909.5A patent/CN114633986B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201842473U (en) * | 2010-11-01 | 2011-05-25 | 黄石市蓝天除尘设备制造有限公司 | Fillet press-fit type groove-shaped drum |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114633986A (en) | 2022-06-17 |
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