CN214578361U - Supporting roller four-row cylindrical roller bearing hollow roller - Google Patents
Supporting roller four-row cylindrical roller bearing hollow roller Download PDFInfo
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- CN214578361U CN214578361U CN202022816057.2U CN202022816057U CN214578361U CN 214578361 U CN214578361 U CN 214578361U CN 202022816057 U CN202022816057 U CN 202022816057U CN 214578361 U CN214578361 U CN 214578361U
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Abstract
The utility model discloses a hollow roller of backing roll four-row cylindrical roller bearing, including rolling element, ball socket, round hole A, round hole B, round hole C, pillar hole and pillar hole surface, rolling element both ends face is seted up to the ball socket, and the through-hole is vertically seted up to the rolling element, and the both ends outermost side of through-hole is opened and is established to round hole A, and both ends round hole B's the outside is connected to both ends round hole A's inboard, and both ends round hole C outside is connected to both ends round hole B's inboard, and both ends round hole C is the tapered hole, and round hole C's macrostoma is in outer osculum, and the both ends in pillar hole are connected to both ends round hole C's aperture, carry out deep quenching after the pillar hole surface carburization thermal treatment in pillar hole, the beneficial effects of the utility model are that: the bearing structure is redesigned, and particularly, the structure of the hollow rolling body is optimized and improved, so that the retainer is in line contact with the rolling body, certain lubricating oil can be kept, the fit clearance between the rolling body and the support column is changed, and the roughness of the inner surface of the inner hole of the rolling body is improved.
Description
Technical Field
The utility model relates to a roller bearing hollow roller technical field specifically is a four-row cylindrical roller bearing hollow roller of backing roll.
Background
In the process of steel rolling production, the load borne by the supporting roller of the roller is the largest, and because the rolling speed is high, the inner rolling body and the retainer bear high-speed heavy load, the retainer adopts a combined form. In order to better isolate and guide the rolling bodies, the rolling bodies are often designed into hollow structures, for example, FCDP 146750/HCP 53 produced by our manufacturer for a certain company is taken as an example, the rollers and bearings of the manufacturer adopt oil-gas lubrication, the original bearings used at the parts are imported bearings, but the manufacturers agree to localization due to high price and long supply time, the ferrules and the rolling bodies adopt carburizing steel G20Cr2Ni4A materials, so the price of the bearing set is only one third of that of the imported bearings, after the rolling bodies are installed according to the original design, the temperature rise is too fast for one half month, and then the struts of the retainer are broken, so that the bearing is scrapped.
Through analysis of the bearing structure and the rolling body, the bearing hole of the rolling body is rough, the gap between the upper end and the lower end of the support is too large, the support and the retainer are mutually interfered, the end surface of the roller is in surface contact with the retainer, mutual friction and rotation are not flexible, lubricating oil carbonization is caused by grinding motion of the rolling body and the inner roller path, the bearing is heated and heated violently, the bearing seat and the bearing are heated and heated violently, the retainer is broken, the rolling body falls off, and the diameter of the bearing, the bearing seat and the roller is burnt out.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a four-row cylindrical roller bearing hollow roller of backing roll to solve the problem that proposes among the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme:
the utility model provides a four-row cylindrical roller bearing hollow roller of backing roll, includes rolling element, ball socket, round hole A, round hole B, round hole C, pillar hole and pillar hole surface, rolling element both ends face is seted up for the ball socket, and the through-hole is vertically seted up to the rolling element, and the both ends outermost side of through-hole is opened and is established to round hole A, and both ends round hole B's the outside is connected to both ends round hole A's inboard, and both ends round hole C outside is connected to both ends round hole B's inboard, and both ends round hole C is the tapered hole, and round hole C's macrostoma is in outer osculum, and the both ends in pillar hole are connected to both ends round hole C's aperture.
As a further aspect of the present invention: the diameter of the rolling elements is 75CM with a tolerance of + -0.005 CM.
As a further aspect of the present invention: the diameter of the circular hole A is 35 CM.
As a further aspect of the present invention: the diameter of the round hole B is smaller than that of the round hole A.
As a further aspect of the present invention: the two ends of the round hole C are designed to be 5 degrees of taper, and the included angle is 10 degrees
As a further aspect of the present invention: the post holes are 18CM in diameter to a tolerance of +0.2 CM.
As a further aspect of the present invention: the depth of the carburized layer on the surface of the support hole reaches 3 mm.
Compared with the prior art, the beneficial effects of the utility model are that:
through redesigning bearing structure, especially optimize and improve the structure of hollow rolling element, make the contact of holder and rolling element be line contact, can keep certain lubricating oil, change the fit clearance between rolling element and the pillar, improve the roughness of rolling element hole internal surface, specifically improve following several: improve the structure of rolling element hole, adopt clearance fit at the middle part with the pillar, be convenient for more lubricating oil get into in the gap of rolling element and pillar, improve rotational speed and rotatory flexibility, reduce friction, the advantage of this structure has reduced the area of contact of holder pillar and hollow roller, the bearing is at the operation in-process, increase and the increase of operating time along with the load, the temperature can rise, be favorable to better heat dissipation, hollow both sides clearance increases simultaneously, can improve elastic deformation ability, play the effect of buffering less vibration, carry out carburizing heat treatment to the surface in pillar hole, the carburization back surface carries out deep quenching, reduce pillar hole tolerance, and carry out the correct grinding to the pillar hole, improve the roughness in pillar hole, improve the ball socket area of rolling element both ends face.
Drawings
Fig. 1 is a schematic view of a prior art structure of four-row cylindrical roller bearing hollow rollers of a supporting roller.
Fig. 2 is a schematic structural diagram of a supporting roller four-row cylindrical roller bearing hollow roller.
In the figure: rolling element 1, ball socket 2, circular hole a3, circular hole B4, circular hole C5, strut hole 6, and strut hole surface 7.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1-2, in an embodiment of the present invention, a hollow roller of a four-row cylindrical roller bearing of a supporting roller includes a rolling element 1, a ball socket 2, a circular hole a3, a circular hole B4, a circular hole C5, a pillar hole 6 and a pillar hole surface 7, wherein two end surfaces of the rolling element 1 are opened to form the ball socket 2, a tolerance of the diameter of the rolling element 1 is 75CM and is ± 0.005CM, and the rolling element 1 is longitudinally opened to form a through hole, and the rolling element 1 cooperates with the pillar to work.
The outermost sides of two ends of the through hole are provided with round holes A3, the diameter of the round hole A3 is 35CM, the inner side of the round hole A3 at two ends is connected with the outer side of the round hole B4 at two ends, the diameter of the round hole B4 is smaller than that of the round hole A3, the inner side of the round hole B4 at two ends is connected with the outer side of the round hole C5 at two ends, the round hole C5 at two ends is an oblique taper hole, the two ends of the round hole C5 are designed to be 5 degrees of taper, the included angle is 10 degrees, the large mouth of the round hole C5 is arranged in the small mouth, the small hole of the round hole C5 at two ends is connected with the two ends of the support hole 5, the diameter of the support hole 6 is 18CM tolerance and 0.2CM, the support hole surface 7 of the support hole 6 is subjected to deep quenching after carburization heat treatment, the surface carburization layer depth of the support hole 6 reaches 3mm, the support hole 6 is matched with the rolling body 1 and the support to work, lubricating oil is injected into the through the opened through the heat treatment of the surface of the support hole 6 to reduce the tolerance of the support hole 6, and the post holes 6 are finely ground, so that the roughness of the post holes 6 is improved.
The support hole 6 that sets up is convenient for more lubricating oil to get into in the gap of rolling element 1 and pillar, improves rotational speed and rotatory flexibility, reduces the friction, and the advantage of this structure has reduced the area of contact of holder pillar and hollow roller, and the bearing is at the operation in-process, along with the increase of load and operating time's increase, and the temperature can rise, is favorable to better heat dissipation, and hollow both sides clearance increases simultaneously, can improve elastic deformation ability, plays the effect of buffering less vibration.
In the description of the present invention, it should be noted that unless explicitly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally 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 invention can be understood by those of ordinary skill in the art through specific situations.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.
Claims (7)
1. The utility model provides a four-row cylindrical roller bearing hollow roller of backing roll, includes rolling element (1), ball socket (2), round hole A (3), round hole B (4), round hole C (5), pillar hole (6) and pillar hole surface (7), its characterized in that, rolling element (1) both ends face is seted up for ball socket (2), and the through-hole is vertically seted up in rolling element (1), and establish to round hole A (3) to the both ends outermost side of through-hole, and the outside of both ends round hole B (4) is connected to the inboard of both ends round hole A (3), and both ends round hole C (5) outside is connected to the inboard of both ends round hole B (4), and both ends round hole C (5) are the taper hole to one side, and the macrostoma of round hole C (5) is in the osculum outside, and the both ends of pillar hole (6) are connected to the aperture of both ends round hole C (5).
2. A supporting roller four-row cylindrical roller bearing hollow roller according to claim 1, characterized in that the rolling elements (1) have a diameter of 75CM with a tolerance of ± 0.005 CM.
3. A supporting roller four-row cylindrical roller bearing hollow roller according to claim 1, characterized in that the diameter of the circular hole a (3) is 35 CM.
4. A supporting roller four-row cylindrical roller bearing hollow roller according to claim 1, characterized in that the diameter of the circular hole B (4) is smaller than that of the circular hole a (3).
5. A supporting roller four-row cylindrical roller bearing hollow roller as claimed in claim 1, characterized in that the ends of the circular hole C (5) are designed with a 5 ° taper and an angle of 10 °.
6. A supporting roller four-row cylindrical roller bearing hollow roller according to claim 1, characterized in that the diameter of the supporting roller bore (6) is 18CM with a tolerance of +0.2 CM.
7. A supporting roller four-row cylindrical roller bearing hollow roller according to claim 1, characterized in that the depth of the carburized layer of the supporting roller hole (6) is up to 3 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022816057.2U CN214578361U (en) | 2020-11-30 | 2020-11-30 | Supporting roller four-row cylindrical roller bearing hollow roller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022816057.2U CN214578361U (en) | 2020-11-30 | 2020-11-30 | Supporting roller four-row cylindrical roller bearing hollow roller |
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| Publication Number | Publication Date |
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| CN214578361U true CN214578361U (en) | 2021-11-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202022816057.2U Active CN214578361U (en) | 2020-11-30 | 2020-11-30 | Supporting roller four-row cylindrical roller bearing hollow roller |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114754072A (en) * | 2022-02-11 | 2022-07-15 | 长春电子科技学院 | Roller, high-precision bearing and high-end equipment |
-
2020
- 2020-11-30 CN CN202022816057.2U patent/CN214578361U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114754072A (en) * | 2022-02-11 | 2022-07-15 | 长春电子科技学院 | Roller, high-precision bearing and high-end equipment |
| CN114754072B (en) * | 2022-02-11 | 2023-09-22 | 长春电子科技学院 | Roller, high-precision bearing and high-end equipment |
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