Stacked bearing mechanism
By incorporating multiple bearings in the bearing mechanism, particularly the inner cylindrical roller bearing and outer deep groove bearing, inner tapered roller bearing and outer tapered roller bearing at the front and rear ends of the spindle, the problem of heat generation during high-speed rotation of existing bearings is solved, thus improving the service life of the bearings.
Patent Information
- Application Number
- CN202520486634.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-19
- Publication Date
- 2025-11-28
- Estimated Expiration
- 2035-03-19
AI Technical Summary
In existing technologies, bearings generate a large amount of heat when rotating at high speeds for extended periods. This not only affects the bearing's performance but also reduces its lifespan due to the temperature effect.
A superimposed bearing mechanism was designed, with an inner cylindrical roller bearing and an outer deep groove bearing at the front end of the main shaft, and an inner tapered roller bearing and an outer tapered roller bearing at the rear end of the main shaft. By setting up four bearings, two bearings are provided at each end of the main shaft, thereby reducing the speed of each bearing and reducing heat generation.
This effectively reduces the temperature impact on the bearing during high-speed rotation and improves the bearing's service life.
Smart Images
Figure CN223609121U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to bearing technical field, especially relate to a superimposed bearing mechanism. BACKGROUND
[0002] Bearing is the component that is fixed and reduces the load friction coefficient in the mechanical transmission process, also can say, when other machine parts produce relative motion on the shaft, used to reduce the friction coefficient in the transmission process and keep the shaft center position fixed machine, bearing is a kind of important part in contemporary mechanical equipment, its main function is to support mechanical rotator, to reduce the mechanical load friction of equipment in transmission process, the end of the existing bearing is mostly ball structure, a large amount of heat is generated under the condition of long time high-speed rotation, not only influence the use state of bearing, and reduce the service life of bearing, it is unfavorable to the long-term use of bearing, for this purpose, a superimposed bearing mechanism is provided. CONTENT OF UTILITY MODEL
[0003] In order to solve the above problems, the utility model provides a superimposed bearing mechanism.The utility model solves the problem that the end of the existing bearing is mostly ball structure, a large amount of heat is generated under the condition of long time high-speed rotation, not only influence the use state of bearing, and reduce the service life of bearing, it is unfavorable to the long-term use of bearing.
[0004] The utility model discloses a superimposed bearing mechanism, including outer bearing sleeve, one side of outer bearing sleeve is equipped with front end bearing cover, the other side of outer bearing sleeve is equipped with rear end bearing cover, the middle part of front end bearing cover and rear end bearing cover is inserted with spindle, one end of spindle is equipped with spindle inner sleeve cylindrical roller bearing near front end bearing cover, the outer side of spindle inner sleeve cylindrical roller bearing is equipped with bearing sleeve bushing, the outer side of bearing sleeve bushing is equipped with spindle outer sleeve deep groove bearing, the one side of spindle is sleeved with the inner ring tapered roller bearing safety cover near rear end bearing cover, be equipped with two symmetries inner ring tapered roller bearing between inner ring tapered roller bearing safety cover and spindle, the outer side of inner ring tapered roller bearing safety cover is equipped with outer ring tapered roller bearing safety cover, be equipped with two outer ring tapered roller bearings between outer ring tapered roller bearing safety cover and inner ring tapered roller bearing safety cover, the outer side of inner ring tapered roller bearing safety cover located outer ring tapered roller bearing is equipped with thrust ball bearing.
[0005] In the scheme, the spindle is located on the side of the spindle inner sleeve cylindrical roller bearing away from the front end bearing cover and is equipped with a bearing radial clearance adjusting nut.
[0006] In the scheme, the inner ring tapered roller bearing safety cover is located on the side of the thrust ball bearing away from the outer ring tapered roller bearing and is equipped with a spindle axial clearance adjusting nut.
[0007] The main shaft is provided with two locking nuts on the side close to the rear end bearing cover of the inner ring tapered roller bearing, and a retreat stop washer is arranged between the two locking nuts.
[0008] The main shaft is provided with a flat key pin on the outside of the rear end bearing cover.
[0009] The front end bearing cover, the rear end bearing cover and the front end bearing cover are fixedly connected through bolts.
[0010] The utility model discloses a superimposed bearing mechanism, the main shaft front end is equipped with the main shaft inner sleeve cylindrical roller bearing and main shaft outer sleeve deep groove bearing, and the main shaft rear end is equipped with the inner ring tapered roller bearing and outer ring tapered roller bearing, is provided with two bearings at the both ends of the main shaft through four bearings, thereby the rotation speed of each bearing is greatly reduced compared with single ball bearing when the main shaft rotates at high speed, thereby effectively reducing the influence of temperature on the bearing, and the service life of the bearing is improved. BRIEF DESCRIPTION OF DRAWINGS
[0011] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.
[0012] Figure 1 It is a cross section schematic view of the utility model;
[0013] Figure 2 It is a structure schematic view of part A of the utility model;
[0014] Figure 3 It is a structure schematic view of part B of the utility model;
[0015] Figure 4 It is a structure schematic view of part C of the utility model.
[0016] In the drawing: 1, outer bearing sleeve 2, front end bearing cover 3, main shaft 4, main shaft outer sleeve deep groove bearing 5, bearing sleeve bushing 6, bearing radial clearance adjusting nut 7, main shaft inner sleeve cylindrical roller bearing 8, main shaft axial clearance adjusting nut 9, thrust ball bearing 10, outer ring tapered roller bearing 11, outer ring tapered roller bearing safety cover 12, inner ring tapered roller bearing safety cover 13, inner ring tapered roller bearing 14, locking nut 15, retreat stop washer 16, flat key pin 17, rear end bearing cover. DETAILED DESCRIPTION
[0017] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings and examples. The following examples are only used to more clearly illustrate the technical solution of this utility model and should not be construed as limiting the scope of protection of this utility model.
[0018] like Figures 1-4 As shown, this utility model is a stacked bearing mechanism, including an outer bearing sleeve 1. A front bearing cover 2 is provided on one side of the outer bearing sleeve 1, and a rear bearing cover 17 is provided on the other side. A main shaft 3 is inserted into the middle of the front bearing cover 2 and the rear bearing cover 17. A main shaft inner cylindrical roller bearing 7 is provided near the front bearing cover 2 of the main shaft 3. A bearing bushing 5 is provided outside the main shaft inner cylindrical roller bearing 7. A main shaft outer deep groove bearing 4 is provided outside the bearing bushing 5. An inner tapered roller bearing safety sleeve 12 is fitted onto the side of the main shaft 3 near the rear bearing cover 17. Two symmetrical inner tapered roller bearings 13 are provided between the inner tapered roller bearing safety sleeve 12 and the main shaft 3. The inner tapered roller bearing safety sleeve 12 can limit the movement of the inner tapered roller bearings 13. The spindle 3 is equipped with an outer tapered roller bearing safety sleeve 11. Two outer tapered roller bearings 10 are provided between the outer tapered roller bearing safety sleeve 11 and the inner tapered roller bearing safety sleeve 12. The outer tapered roller bearing safety sleeve 11 can limit the movement of the outer tapered roller bearings 10. The front end of the spindle 3 is equipped with an inner cylindrical roller bearing 7 and an outer deep groove bearing 4. The rear end of the spindle 3 is equipped with an inner tapered roller bearing 13 and an outer tapered roller bearing 10. By setting four bearings, there are two bearings at each end of the spindle 3, so that when the spindle 3 rotates at high speed, the speed of each bearing is significantly reduced compared to a single ball bearing. The inner tapered roller bearing safety sleeve 12 is located outside the outer tapered roller bearings 10 and is equipped with a thrust ball bearing 9. The thrust ball bearing 9 can effectively limit the movement of the outer tapered roller bearings 10 from the side.
[0019] The spindle 3 is provided with a bearing radial clearance adjusting nut 6 on the side of the inner cylindrical roller bearing 7 away from the front bearing cover 2. The spindle 3 is provided with an external thread that matches the bearing radial clearance adjusting nut 6. The clearance between the spindle 3 and the inner cylindrical roller bearing 7 can be adjusted by the bearing radial clearance adjusting nut 6.
[0020] The inner ring tapered roller bearing safety sleeve 12 is located on the side of the thrust ball bearing 9 away from the outer ring tapered roller bearing 10 and is provided with a main shaft axial clearance adjusting nut 8. The inner ring tapered roller bearing safety sleeve 12 is provided with an external thread that matches the main shaft axial clearance adjusting nut 8. The main shaft axial clearance adjusting nut 8 can limit the thrust ball bearing 9.
[0021] The main shaft 3 is located on the inner ring tapered roller bearing 13 near the rear end bearing cover 17 side is equipped with two locking nuts 14, two locking nuts 14 between the stop washer 15, main shaft 3 is equipped with the outer thread matched with locking nut 14, locking nut 14 can be positioned to the inner ring tapered roller bearing 13, while the setting of the stop washer 15 effectively guarantees the stability of the locking nut 14 and the main shaft 3 connection.
[0022] The main shaft 3 is located on the rear end bearing cover 17 outside is equipped with a flat key pin 16, the setting of the flat key pin 16 makes the main shaft 3 more convenient to connect with the pulley and motor.
[0023] The front end bearing cover 2 and the rear end bearing cover 17 are fixedly connected by bolts.
[0024] Specifically, in the utility model, the main shaft 3 front end is equipped with the main shaft inner sleeve cylindrical roller bearing 7 and the main shaft outer sleeve deep groove bearing 4, the main shaft 3 rear end is equipped with the inner ring tapered roller bearing 13 and the outer ring tapered roller bearing 10, through the setting of four bearings, the main shaft 3 both ends have two bearings respectively, so that the main shaft 3 rotates at high speed, the rotational speed of each bearing is greatly reduced compared with single ball bearing, thereby effectively reducing the influence of temperature on the bearing, improving the service life of the bearing, the setting of the flat key pin 16 makes the main shaft 3 more convenient to connect with the pulley and motor.
[0025] The above only for the preferred embodiment of the utility model has been described, and does not limit the utility model, any modification, equivalent replacement, improvement etc. within the spirit and principle of the utility model should be included in the protection scope of the utility model.
Claims
1. A superimposed bearing mechanism comprising an outer bearing sleeve (1), characterized in that The outer bearing sleeve (1) is provided with a front end bearing cover (2) on one side, and a rear end bearing cover (17) on the other side, the front end bearing cover (2) and the rear end bearing cover (17) are inserted with a main shaft (3) in the middle, the main shaft (3) is provided with a main shaft inner sleeve cylindrical roller bearing (7) on one end close to the front end bearing cover (2), the outer side of the main shaft inner sleeve cylindrical roller bearing (7) is provided with a bearing sleeve bushing (5), the outer side of the bearing sleeve bushing (5) is provided with a main shaft outer sleeve deep groove bearing (4), the main shaft (3) is sleeved with an inner ring tapered roller bearing safety sleeve (12) on one side close to the rear end bearing cover (17), two symmetrical inner ring tapered roller bearings (13) are arranged between the inner ring tapered roller bearing safety sleeve (12) and the main shaft (3), the outer side of the inner ring tapered roller bearing safety sleeve (12) is provided with an outer ring tapered roller bearing safety sleeve (11), two outer ring tapered roller bearings (10) are arranged between the outer ring tapered roller bearing safety sleeve (11) and the inner ring tapered roller bearing safety sleeve (12), the inner ring tapered roller bearing safety sleeve (12) is provided with a thrust ball bearing (9) on the outer side of the outer ring tapered roller bearing (10).
2. An overlaid bearing mechanism according to claim 1, wherein The main shaft (3) is provided with a bearing radial gap adjusting nut (6) on the side away from the front end bearing cover (2) of the main shaft inner sleeve cylindrical roller bearing (7).
3. A superimposed bearing mechanism according to claim 1, wherein The inner ring tapered roller bearing safety sleeve (12) is provided with a main shaft axial gap adjusting nut (8) on the side away from the outer ring tapered roller bearing (10) of the thrust ball bearing (9).
4. A superimposed bearing mechanism according to claim 1, wherein The main shaft (3) is provided with two locking nuts (14) on the side close to the rear end bearing cover (17) of the inner ring tapered roller bearing (13), and a retreat stop washer (15) is arranged between the two locking nuts (14).
5. A superimposed bearing mechanism according to claim 1, wherein The main shaft (3) is provided with a flat key pin (16) on the outer side of the rear end bearing cover (17).
6. A superimposed bearing mechanism according to claim 1, wherein The front end bearing cover (2) and the rear end bearing cover (17) are fixedly connected with the front end bearing cover (2) through bolts.