CN114633986A - Welding-free bearing seat carrier roller and processing equipment thereof - Google Patents
Welding-free bearing seat carrier roller and processing equipment thereof Download PDFInfo
- Publication number
- CN114633986A CN114633986A CN202210474909.5A CN202210474909A CN114633986A CN 114633986 A CN114633986 A CN 114633986A CN 202210474909 A CN202210474909 A CN 202210474909A CN 114633986 A CN114633986 A CN 114633986A
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- Prior art keywords
- carrier roller
- bearing seat
- welding
- sliding
- lower pressing
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 238000007723 die pressing method Methods 0.000 claims abstract description 27
- 238000003825 pressing Methods 0.000 claims description 30
- 238000009434 installation Methods 0.000 claims description 11
- 230000000149 penetrating effect Effects 0.000 claims description 7
- 238000003860 storage Methods 0.000 claims description 7
- 230000006978 adaptation Effects 0.000 claims description 3
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 2
- 238000003754 machining Methods 0.000 claims 2
- 238000005096 rolling process Methods 0.000 abstract description 2
- 238000007789 sealing Methods 0.000 abstract description 2
- 238000003466 welding Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 230000002457 bidirectional effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000013590 bulk material Substances 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
Images
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)
Abstract
The invention discloses a welding-free bearing seat carrier roller and processing equipment thereof, wherein the welding-free bearing seat carrier roller comprises a carrier roller body, the inner surface of the carrier roller body is provided with a step surface, a bearing seat is pressed on the surface of the step surface through a die pressing head, the inner surface of the bearing seat is provided with a bearing, the inner surface of the bearing is rotatably connected with a rolling shaft, one end of the carrier roller body is provided with the step surface, the bearing seat is placed on the inner surface of the step surface, 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 sealing performance and the connection strength of the carrier roller manufactured in the mode can be improved.
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 field of bulk material conveying in various industries, a carrier roller is taken as a key component with the largest use amount, the performance and the manufacturing process of the carrier roller are particularly important, the existing carrier roller bearing seat and the roller body are usually spliced by a welding method, the bonding strength between the components can be influenced due to the existence of welding deformation and welding stress, meanwhile, certain pollution can be caused to the operation environment due to smoke dust generated in the welding process, the performance of a sealing component and a bearing is changed when the welding heat causes a further continuous assembly process, and the use effect is finally influenced.
Disclosure of Invention
The invention aims to provide a welding-free bearing seat carrier roller and processing equipment thereof.
The purpose of the invention can be realized by the following technical scheme:
a welding-free bearing block carrier roller and processing equipment thereof comprise a carrier roller body, wherein the inner surface of the carrier roller body is provided with a step surface, a bearing block is pressed on the surface of the step surface through a die pressing head, the inner surface of the bearing block is provided with a bearing, and the inner surface of the bearing is rotatably connected with a rolling shaft;
the die pressing head is characterized in that a die pressing cavity is formed in the bottom of the die pressing head, an installation cavity is formed in the top of an inner cavity of the die pressing cavity in a penetrating mode, the inner side wall of the die pressing cavity is an inclined surface, and the inclined angle of the inclined surface ranges from 60 degrees to 89 degrees.
As a further scheme of the invention: the utility model discloses a die pressing machine, including workstation, the top fixedly connected with of workstation pushes down the platform, the top fixedly connected with electric telescopic handle who pushes down the platform, electric telescopic handle's output runs through and pushes down the platform and extends to the outside of pushing down the platform, electric telescopic handle's output fixedly connected with holding down plate, the bottom of holding down plate is connected with the mould pressure head, the through hole has all been seted up in running through all around at holding down plate top, the internal surface of installation cavity is provided with the link, the surface of link and the internal surface sliding connection of through hole, the top of link is connected with the dop, the top of workstation is run through and is provided with puts the thing box.
As a further scheme of the invention: the sliding grooves are formed in the two sides of the top of the lower pressing plate, the inner surface of each sliding groove is connected with a U-shaped sliding block in a sliding mode, and the top of each U-shaped sliding block is in contact with the bottom of each clamping head.
As a further scheme of the invention: the bottom fixedly connected with cylinder of workstation inner chamber, the output of cylinder runs through puts the thing box and extends to the inside of putting the thing box, the output fixedly connected with push pedal of cylinder.
As a further scheme of the invention: and two sides of the top of the workbench are slidably connected with clamping blocks for clamping the carrier roller body.
As a further scheme of the invention: the utility model discloses a set up threaded hole, including workstation top, installation riser, sliding rod, slide bar, slide hole, the both sides at workstation top and be located the equal fixedly connected with installation riser in one side that two clamp splices kept away from relatively, two the dwang and slide bar have set gradually from the front to the back between the relative one side of installation riser, two one side of clamp splice all runs through set up the sliding hole, two the opposite side of clamp splice all runs through set up threaded hole, the surface of slide bar and the internal surface sliding connection in sliding hole, the dwang is located the inside in screw hole.
As a further scheme of the invention: two-way screw thread has been seted up to the surface of dwang, two-way screw thread and the internal surface looks adaptation of screw hole.
As a further scheme of the invention: and a spring is sleeved on the outer surface of the sliding rod and positioned between the two clamping blocks.
The invention has the beneficial effects that:
(1) according to the carrier roller manufactured by the method, 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.
(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 downwards, 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, and the bearing blocks are wrapped.
(3) According to the invention, the through hole is arranged above the lower pressing plate in a penetrating manner, the connection relation between the connecting frame and the installation cavity is matched, and the U-shaped sliding block in the sliding groove is used for propping against the clamping head so as to connect the die pressing heads.
Drawings
The invention will be further described with reference to the accompanying drawings.
Fig. 1 is a partial structural cross-sectional view of a idler body in accordance with the present invention;
FIG. 2 is a schematic view of the mounting of the bearing housing of the present invention;
FIG. 3 is a schematic view showing the external structure of the processing apparatus of the present invention;
FIG. 4 is a partial sectional view of the processing apparatus of 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 sectional view of a clamping block according to the present invention.
In the figure: 1. a carrier roller body; 2. a roller; 3. a step surface; 4. a die head; 41. a mould pressing cavity; 42. a mounting cavity; 5. a bearing; 6. a bearing seat; 7. a work table; 8. pressing down the platform; 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. a clamping block; 17. a storage box; 18. a cylinder; 19. pushing the plate; 20. a slide hole; 21. a slide bar; 22. a spring; 23. installing a vertical plate; 24. a threaded hole; 25. rotating the rod; 26. bidirectional screw threads; 27. a chuck.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. 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 invention.
Referring to fig. 1-6, the invention relates to a welding-free bearing seat carrier roller, which 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 mold 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 die pressing head 4 is provided with a die pressing cavity 41, the top of the inner cavity of the die pressing cavity 41 is provided with an installation cavity 42 in a penetrating manner, the inner side wall of the die pressing cavity 41 is provided with an inclined surface, and the inclined angle of the inclined surface is 75 degrees.
The carrier roller body 1 can wrap the bearing seat 6 in a mould pressing mode, and can also wrap the bearing seat 6 in a spinning mode.
The invention also provides processing equipment of the welding-free bearing pedestal carrier roller, which comprises a workbench 7, wherein the top of the workbench 7 is fixedly connected with a lower pressing table 8, the top of the lower pressing table 8 is fixedly connected with an electric telescopic rod 9, the output end of the electric telescopic rod 9 penetrates through the lower pressing table 8 and extends to the outside of the lower pressing table 8, the output end of the electric telescopic rod 9 is fixedly connected with a lower pressing plate 10, the bottom of the lower pressing plate 10 is connected with a die pressing head 4, the periphery of the top of the lower pressing plate 10 is provided with through holes 12 in a penetrating manner, the inner surface of each through hole 12 is provided with a connecting frame 13, the outer surface of each connecting frame 13 is in contact with the inner surface of a mounting cavity 42, the top end of each connecting frame 13 is connected with a clamping head 27, and the top of the workbench 7 is provided with a storage box 17 in a penetrating manner.
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 each sliding groove 14 in a sliding mode, the top of the U-shaped sliding block 15 is in contact with the bottom of the clamping head 27, a cylinder 18 is fixedly connected to the bottom of the inner cavity of the workbench 7, the output end of the 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 cylinder 18.
The both sides sliding connection at 7 tops of workstation has the clamp splice 16 that is used for pressing from both sides tight bearing roller body 1, the both sides at 7 tops of workstation just are located the equal fixedly connected with installation riser 23 in one side that two clamp splices 16 kept away from relatively, two dwang 25 and slide bar 21 have set gradually from front to back between the relative one side of installation riser 23, two one side of clamp splice 16 all runs through and has seted up sliding hole 20, two the opposite side of clamp splice 16 all runs through and has seted up threaded hole 24, the surface of slide bar 21 and the internal surface sliding connection of sliding hole 20, dwang 25 is located the inside of threaded hole 24.
All run through all around at holding down plate 10 top and be provided with guide post 11, the top of guide post 11 and the top fixed connection of 8 inner chambers of push down table, the bottom of guide post 11 and the top fixed connection of workstation 7, two-way screw thread 26 has been seted up to the surface of dwang 25, the internal surface looks adaptation of two-way screw thread 26 and screw hole 24, the surface of slide bar 21 just is located and overlaps between two clamp splices 16 and is equipped with spring 22.
The processing method of the bearing seat carrier roller comprises the following steps: firstly, vertically placing the carrier roller body 1 into the storage box 17, contacting the carrier roller body with the top surface of the push plate 19, then starting the air cylinder 18 to extend to enable the top end of the carrier roller body 1 to extend out of the workbench 7 for a certain distance and be higher than the height of the clamping blocks 16, then enabling the two clamping blocks 16 to move towards the relatively close side under the matching of the bidirectional threads 26 and the threaded holes 24 by rotating the rotating rod 25, enabling the sliding rod 21 to slide on the inner surface of the sliding hole 20 at the moment, ensuring the clamping blocks 16 to be tightly attached to the surface of the carrier roller body 1 under the action of the spring 22, then embedding the bearing seat 6 into the step surface 3 of the carrier roller body 1, selecting the mould pressing head 4 with proper specification to be placed at the bottom of the lower pressing plate 10, enabling the connecting frame 13 to penetrate through the mounting cavity 42 and the through hole 12, then clamping the head 27 to be clamped at the top end of the connecting frame 13, pushing the U-shaped sliding block 15 in the sliding groove 14 at the moment, 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, so that the lower pressing plate 10 is pushed to slide downwards on the outer surface of the guide post 11, after the inner surface of the die pressing cavity 41 is contacted with the carrier roller body 1, the top end of the carrier roller body 1 is bent inwards due to the fact that the inner surface of the die pressing cavity 41 is an inclined surface, 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.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "left", "right", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation and a specific orientation configuration and operation, and thus, should not be construed as limiting the present invention. Furthermore, "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, 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; they may be directly connected or indirectly connected through an intermediate member, or they may be connected through two or more elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
While one embodiment of the present invention has been described in detail, the description is only a preferred embodiment of the present invention and should not be taken as limiting the scope of the invention. All equivalent changes and modifications made within the scope of the present invention shall fall within the scope of the present invention.
Claims (7)
1. The welding-free bearing seat carrier roller comprises a carrier roller body (1) and is characterized in that 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), 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).
2. A machining apparatus for machining a weld-free chock roller as claimed in claim 1, including a table (7), the top of the working table (7) is fixedly connected with a lower pressing table (8), the top of the lower pressing table (8) is fixedly connected with an electric telescopic rod (9), the output end of the electric telescopic rod (9) penetrates through the lower pressing platform (8) and extends to the outside of the lower pressing platform (8), the output end of the electric telescopic rod (9) is fixedly connected with a lower pressing plate (10), the bottom of the lower pressing plate (10) is connected with a mould pressing head (4), the periphery of the top of the lower pressing plate (10) is provided with through holes (12) in a penetrating way, a connecting frame (13) is arranged on the inner surface of the through hole (12), a clamping head (27) is connected to the top end of the connecting frame (13), and an object placing box (17) penetrates through the top of the workbench (7);
the die pressing head is characterized in that a die pressing cavity (41) is formed in the bottom of the die pressing head (4), an installation cavity (42) is formed in the top of the inner cavity of the die pressing cavity (41) in a penetrating mode, the inner side wall of the die pressing cavity (41) is an inclined surface, the inclined angle of the inclined surface ranges from 60 degrees to 89 degrees, and the outer surface of the connecting frame (13) is in contact with the inner surface of the installation cavity (42).
3. The processing equipment of the welding-free bearing seat carrier roller as claimed in claim 2, 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 each sliding groove (14) in a sliding mode, and the top of each U-shaped sliding block (15) is in contact with the bottom of the clamping head (27).
4. The processing equipment of the welding-free bearing seat carrier roller as claimed in claim 2, wherein a cylinder (18) is fixedly connected to the bottom of the inner cavity of the working table (7), the output end of the 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 cylinder (18).
5. The processing equipment of the welding-free bearing block carrier roller according to the claim 2, wherein the two sides of the top of the working platform (7) are connected with clamping blocks (16) used for clamping the carrier roller body (1) in a sliding mode.
6. The processing equipment of the welding-free bearing pedestal carrier roller according to claim 2, characterized in that mounting vertical plates (23) are fixedly connected to two sides of the top of the workbench (7) and located on one side, far away from the two clamping blocks (16), of the two clamping blocks (16), a rotating rod (25) and a sliding rod (21) are sequentially arranged between the two opposite sides of the mounting vertical plates (23) from front to back, a sliding hole (20) is formed in one side of each of the two clamping blocks (16), a threaded hole (24) is formed in the other side of each of the two clamping blocks (16), the outer surface of the sliding rod (21) is in sliding connection with the inner surface of the sliding hole (20), and the rotating rod (25) is located inside the threaded hole (24);
two-way screw thread (26) have been seted up to the surface of dwang (25), two-way screw thread (26) and the internal surface looks adaptation of screw hole (24).
7. The processing equipment of the welding-free bearing block roller as claimed in claim 6, wherein the outer surface of the sliding rod (21) between the two clamping blocks (16) is sleeved with a spring (22).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210474909.5A CN114633986B (en) | 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 | Welding-free bearing block carrier roller and processing equipment thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114633986A true CN114633986A (en) | 2022-06-17 |
| CN114633986B CN114633986B (en) | 2024-07-05 |
Family
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Citations (11)
| 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 |
| JP2001179372A (en) * | 1999-12-24 | 2001-07-03 | Fujitsu Ltd | Manufacturing method of metal sheet part by press and transfer-machine for metal sheet |
| 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 |
| 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 |
| 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 |
| CN112842225A (en) * | 2018-07-24 | 2021-05-28 | 吴继帅 | Household glass bottle label removing device and using method |
| CN112917132A (en) * | 2019-12-06 | 2021-06-08 | 南京宝地梅山产城发展有限公司 | Device for assembling carrier roller |
| CN113602764A (en) * | 2021-08-09 | 2021-11-05 | 江西铭邑机械设备有限公司 | Wear-resisting type bearing roller |
| CN113695824A (en) * | 2021-09-16 | 2021-11-26 | 赵树清 | Lattice column welding auxiliary device for construction |
Patent Citations (11)
| 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 |
| JP2001179372A (en) * | 1999-12-24 | 2001-07-03 | Fujitsu Ltd | Manufacturing method of metal sheet part by press and transfer-machine for metal sheet |
| 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 |
| 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 |
| 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 |
| CN112842225A (en) * | 2018-07-24 | 2021-05-28 | 吴继帅 | Household glass bottle label removing device and using method |
| CN112917132A (en) * | 2019-12-06 | 2021-06-08 | 南京宝地梅山产城发展有限公司 | Device for assembling carrier roller |
| CN113602764A (en) * | 2021-08-09 | 2021-11-05 | 江西铭邑机械设备有限公司 | Wear-resisting type bearing roller |
| CN113695824A (en) * | 2021-09-16 | 2021-11-26 | 赵树清 | Lattice column welding auxiliary device for construction |
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