Bearing capable of automatically compensating abrasion and rotating device using bearing

Abstract

The utility model relates to a bearing capable of automatically compensating abrasion and a rotating device using the bearing, the bearing comprises an outer sleeve and an inner sleeve, the inner wall of the outer sleeve is conical, the outer wall of the inner sleeve is conical, a first conical middle sleeve is arranged between the outer sleeve and the inner sleeve, and a second conical middle sleeve is arranged between the outer sleeve and the inner sleeve. A first conical rolling shaft is arranged between the outer sleeve and the first conical middle sleeve, a second conical rolling shaft is arranged between the first conical middle sleeve and the inner sleeve, the bearings are symmetrically installed on the main shaft, the bearings are sleeved with the bearing pedestals, and the bearings are sleeved with the bearing pedestals. Abrasion of the rolling shaft and the wall of the bearing sleeve can be compensated at any time through the adjusting screw, the bearing does not need to be replaced, the impeller is driven by the main shaft to rotate, cooling liquid can enter from the liquid input pipe, heat is taken away through the space between the bearing and the rolling shaft, and friction force between the inner sleeve and the rolling shaft is increased during high-speed operation. And the middle sleeve and the rolling shaft outside the middle sleeve are driven to rotate together, so that the linear speed of the rolling shaft is dispersed, and the effect of high-speed operation of the main shaft is achieved.

Description

Technical Field

[0001] The utility model relates to a bearing, in particular to a rotating device using the bearing. Background Art

[0002] China has a vast sea area, a powerful navy and many warships. As the saying goes, speed is the key to victory in martial arts. Therefore, improving the traveling speed of warships is also a major issue. At present, the main shafts of civilian ships in China mainly use journal bearings or bushings. Because of the heavy main shaft, ordinary bearings wear out quickly and are troublesome to replace. Therefore, the rotation speed of the main shaft is only more than a thousand revolutions per minute. It is remarkable that the traveling speed can reach more than twenty knots. The maximum speed of warships can only reach more than thirty knots and it is very difficult to go faster. The main reason is that when the rotation speed is too fast, the journal bearings or bushings will heat up and expand, and the journal bearings or bushings need to be replaced about once every five years, and the replacement cost is also very high. The author has designed a bearing (2024104938861), but it requires manual wear compensation.

[0003] In view of the above defects, after long-term research, the creator of the present utility model finally invented a bearing with automatic wear compensation and a rotating device using the bearing, which is used to increase the rotation speed of the rotating shafts of warships and civilian ships in China, and can automatically compensate for wear, and the bearing does not need to be replaced. Summary of the Utility Model

[0004] The purpose of the present utility model is to provide a bearing with automatic wear compensation, including an outer sleeve and an inner sleeve. The inner wall of the outer sleeve is conical, the outer wall of the inner sleeve is conical, and at least one middle sleeve is arranged between the outer sleeve and the inner sleeve. The middle sleeve is a first conical middle sleeve. A first conical roller is arranged between the outer sleeve and the first conical middle sleeve, and a second conical roller is arranged between the first conical middle sleeve and the inner sleeve. One end of the wall thickness of the outer sleeve extends radially and is longer than the first conical middle sleeve. One end of the wall thickness of the inner sleeve symmetric to the outer sleeve extends radially and is longer than the first conical middle sleeve.

[0005] There are two conical middle sleeves, namely: the first conical middle sleeve and the second conical middle sleeve. A third conical roller is arranged between the first conical middle sleeve and the second conical middle sleeve. The two ends of the first conical middle sleeve, the second conical middle sleeve and the inner sleeve are all longer than the first conical roller, the second conical roller and the third conical roller. The two ends of the first conical roller, the second conical roller and the third conical roller are all rounded. Double-sided convex platforms are arranged at both ends of the first conical middle sleeve, and the convex platforms are all rounded to match the two ends of the first conical roller and the second conical roller. Inner convex platforms are arranged at both ends of the second conical middle sleeve, and the convex platforms are all rounded to match the two ends of the third conical roller.

[0006] It includes a main shaft and a bearing housing. Steps are provided at both ends of the main shaft. One end of each of the symmetrical bearings is tightly mounted on the main shaft against the steps. The bearing housing is sleeved on the bearings. Shaft sleeves for fixing the bearings are respectively provided at the other ends of the bearings. Nuts are respectively provided through the end faces of the bearing housing for the shaft sleeves. Impellers are respectively provided at one ends of the shaft sleeves within the bearing housing.

[0007] A hydraulic device for adjusting the axial movement of the outer sleeve is provided on the bearing housing.

[0008] The hydraulic device includes: a hydraulic pump, hydraulic pipes, and hydraulic pipe joints. There are multiple sets of the hydraulic pipes connecting the hydraulic pump and the hydraulic pipe joints. The multiple sets of hydraulic pipe joints are all fixed on the bearing housing. A propulsion shaft of the outer sleeve is provided within the hydraulic pipe joints.

[0009] The outer sleeve is provided with a mounting hole for the propulsion shaft, and the propulsion shaft is mounted within the mounting hole of the outer sleeve.

[0010] The pressure of the hydraulic pump is greater than the frictional force between the outer sleeve and the bearing housing and the propulsion force of the main shaft.

[0011] Limit screws for the outer sleeve are additionally provided on the bearing housing to ensure that the outer sleeve does not move backward when the hydraulic pump is not working.

[0012] A liquid input pipe and a liquid output pipe are provided on the bearing housing. The liquid input pipe and the liquid output pipe are respectively connected to a cooling water tank.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows: The bearing bush or bearing sleeve is changed to a roller bearing, which reduces the friction force. The thick ends of the outer sleeve and the inner sleeve are radially extended and lengthened, so that both the inner sleeve and the outer sleeve have compensable spaces. Through the hydraulic device and the propulsion shaft of the outer sleeve, the wear of the roller and the bearing sleeve wall can be automatically compensated, making the main shaft operate more stably, and there is no need to replace the bearing. It overcomes the problem that due to the heavy weight of the main shaft, the rollers wear quickly under high-speed operation. The impeller rotates driven by the main shaft, and can take in the coolant from the liquid input pipe, and take away the heat through the space between the bearing rollers, so that the bearing does not heat up. When operating at high speed, the friction force between the inner sleeve and the roller increases, which will drive the middle sleeve and the rollers outside the middle sleeve to rotate together, thereby dispersing the linear speed of the rollers to achieve the effect of high-speed operation of the main shaft. If a higher rotation speed is desired, several more middle sleeves and several sets of rollers can be added. The limit screw of the outer sleeve can ensure that the outer sleeve does not retreat when the hydraulic pump is not working, and the limit screw of the outer sleeve can follow up at any time when the hydraulic pump is working, assisting the hydraulic device to hold the outer sleeve from retreating. This bearing and this rotating device can be used on the main shafts of warships and aircraft carriers, and can also be used on engines, matching the main shafts. Brief Description of the Drawings

[0014] Figure 1 is a schematic front sectional structure view of a bearing with automatic wear compensation and a rotating device using the bearing according to the present utility model;

[0015] Figure 2 is a schematic structure view of a bearing of the present utility model equipped with a conical middle sleeve;

[0016] Figure 3 is a schematic structure view of a bearing of the present utility model equipped with two conical middle sleeves;

[0017] Figure 4 is a schematic sectional structure view of a bearing of the present utility model equipped with a conical middle sleeve;

[0018] Figure 5 is a schematic sectional structure view of a bearing of the present utility model equipped with two conical middle sleeves Detailed Description of the Preferred Embodiment

[0019] The following further describes in detail the above and other technical features and advantages of the present utility model with reference to the accompanying drawings.

[0020] Embodiment 1: As shown in the figure, a bearing with automatic wear compensation is provided, including an outer sleeve 7 and an inner sleeve 1. The inner wall of the outer sleeve 7 is conical, and the outer wall of the inner sleeve 1 is conical. At least one middle sleeve is arranged between the outer sleeve 7 and the inner sleeve 1. The middle sleeve is the first conical middle sleeve 3. A first conical roller 6 is arranged between the outer sleeve 7 and the first conical middle sleeve 3. A second conical roller 2 is arranged between the first conical middle sleeve 3 and the inner sleeve 1. One end of the wall thickness of the outer sleeve 7 extends radially and is longer than the first conical middle sleeve 3. One end of the wall thickness of the inner sleeve 1 symmetric to the outer sleeve 7 extends radially and is longer than the first conical middle sleeve 3.

[0021] Embodiment 2: As shown in the figure, there are two conical middle sleeves, namely: the first conical middle sleeve 3 and the second conical middle sleeve 5. A third conical roller 4 is arranged between the first conical middle sleeve 3 and the second conical middle sleeve 5. Both ends of the first conical middle sleeve 3, the second conical middle sleeve 5 and the inner sleeve 1 are longer than the first conical roller 6, the second conical roller 4 and the third conical roller 2. Rounding is provided at both ends of the first conical roller 6, the second conical roller 4 and the third conical roller 2. Protrusions are arranged on both sides at both ends of the second conical middle sleeve 5, and rounding matching the two ends of the first conical roller 6 and the second conical roller 4 is provided on the protrusions. Protrusions are arranged on the inner sides at both ends of the first conical middle sleeve 3, and rounding matching the two ends of the third conical roller 2 is provided on the protrusions.

[0022] Embodiment 3: As shown in the figure, a bearing capable of automatically compensating for wear and a rotating device using the bearing are provided, including a main shaft 10 and a bearing housing 18. Steps are provided at both ends of the main shaft 10. One end of the bearing is symmetrically mounted on the main shaft 10 close to the step. The bearing housing 18 is sleeved on the bearing. Sleeve 11 for fixing the bearing is respectively provided at the other end of the bearing. Nuts 13 are respectively provided through the end faces of the bearing housing 18 on the sleeve 11. Impellers 12 are respectively provided at one end of the sleeve 11 inside the bearing housing 18. A hydraulic device for adjusting the axial movement of the outer sleeve 7 is provided on the bearing housing 18. The hydraulic device includes: a hydraulic pump (not shown in the figure), a hydraulic pipe (not shown in the figure), a hydraulic pipe joint 9. There are multiple sets of hydraulic pipes connecting the hydraulic pump and the hydraulic pipe joint 9. Multiple sets of hydraulic pipe joints 9 are fixed on the bearing housing 18. A push shaft 19 of the outer sleeve 7 is provided inside the hydraulic pipe joint 9. The outer sleeve 7 is provided with a mounting hole for the push shaft 19. One end of the push shaft 19 is mounted in the mounting hole of the outer sleeve 7. The pressure of the hydraulic pump is greater than the frictional force between the outer sleeve 7 and the bearing housing 18 and the pushing force of the main shaft 10. A limit screw for the outer sleeve 7 (not shown in the figure) is further provided on the bearing housing 18 to ensure that the outer sleeve 7 does not retreat when the hydraulic pump is not working. A liquid inlet pipe 15 and a liquid outlet pipe 16 are provided on the bearing housing 18. The liquid inlet pipe 15 and the liquid outlet pipe 16 are respectively connected to a cooling water tank 17. The thick ends of the inner sleeve 1 and the outer sleeve 7 are radially extended and lengthened, so that both the inner sleeve 1 and the outer sleeve 7 have compensable spaces. The wear of the roller and the bearing sleeve wall can be automatically compensated through the hydraulic device and the push shaft 19 of the outer sleeve 7, so that the main shaft 10 always operates in a stable state without clearance of the bearing, and the bearing does not need to be replaced even if it is worn, overcoming the problem that due to the heavy weight of the main shaft 10, the roller wears quickly under high-speed operation. The impeller 12 rotates driven by the main shaft 10, and can take in the coolant from the liquid inlet pipe 15, take away the heat through the space between the bearing rollers, and make the bearing not heat up. When rotating at high speed, the frictional force between the inner sleeve 1 and the roller increases, which will drive the middle sleeve and the rollers outside the middle sleeve to rotate together, thereby dispersing the linear speed of the rollers to achieve the effect of high-speed rotation of the main shaft 10. If a higher rotation speed is desired, several more middle sleeves and several sets of rollers can be added. The limit screw for the outer sleeve 7 (not shown in the figure) can ensure that the outer sleeve 7 does not retreat when the hydraulic pump (not shown in the figure) is not working, and the limit screw of the outer sleeve 7 can follow up at any time when the hydraulic pump is working to assist the hydraulic device to hold the outer sleeve 7 from retreating. This bearing and this rotating device can be used on the main shafts of warships and aircraft carriers, and can also be used on engines, matching the rotation speed of the main shaft 10.

[0023] The above are only the preferred embodiments of the present invention, which are illustrative rather than restrictive to the present invention. Those skilled in the art understand that many changes, modifications, and even equivalents can be made within the spirit and scope defined by the claims of the present invention, but all will fall within the protection scope of the present invention.

Claims

1. A bearing capable of automatically compensating for wear, comprising an outer sleeve and an inner sleeve, characterized in that: The inner wall of the outer sleeve is conical, the outer wall of the inner sleeve is conical, at least one middle sleeve is arranged between the outer sleeve and the inner sleeve, the middle sleeve is a first conical middle sleeve, a first conical roller is arranged between the outer sleeve and the first conical middle sleeve, a second conical roller is arranged between the first conical middle sleeve and the inner sleeve, one end of the outer sleeve wall thickness extends radially and is longer than the first conical middle sleeve, and one end of the inner sleeve wall thickness symmetrical to the outer sleeve extends radially and is longer than the first conical middle sleeve.

2. A bearing capable of automatically compensating for wear as claimed in claim 1, characterized in that: There are two conical middle sleeves, namely: the first conical middle sleeve and the second conical middle sleeve, a third conical roller is arranged between the first conical middle sleeve and the second conical middle sleeve, both ends of the first conical middle sleeve, the second conical middle sleeve and the inner sleeve are longer than the first conical roller, the second conical roller and the third conical roller, both ends of the first conical roller, the second conical roller and the third conical roller are rounded, both sides of the two ends of the first conical middle sleeve are provided with bosses, the bosses are rounded to match the first conical roller and the second conical roller, the inner sides of the two ends of the second conical middle sleeve are provided with bosses, the bosses are rounded to match the third conical roller.

3. A rotating device using a bearing capable of automatically compensating for wear as claimed in claim 2, comprising a main shaft and a bearing seat, characterized in that: Steps are arranged at both ends of the main shaft, one end of the bearing is symmetrically installed on the main shaft close to the step, the bearing seat is sleeved on the bearing, and the other end of the bearing is respectively provided with a sleeve for fixing the bearing, and the sleeves are respectively provided with nuts passing through the end faces of the bearing seats, and an impeller is respectively arranged at one end of the sleeve inside the bearing seat.

4. A rotating device using a bearing capable of automatically compensating for wear as claimed in claim 3, characterized in that: The bearing seat is provided with a hydraulic device for adjusting the axial movement of the outer sleeve.

5. A rotating device using a bearing capable of automatically compensating for wear as claimed in claim 4, characterized in that: The hydraulic device includes: a hydraulic pump, a hydraulic pipe, and a hydraulic pipe joint. There are multiple sets of hydraulic pipes and hydraulic pipe joints connected to the hydraulic pump. The multiple sets of hydraulic pipe joints are all fixed on the bearing seat. The hydraulic pipe joint is provided with a propulsion shaft of the outer sleeve.

6. A rotating device using a bearing capable of automatically compensating for wear as claimed in claim 5, characterized in that: The outer sleeve is provided with a mounting hole for the propulsion shaft, and the propulsion shaft is mounted in the mounting hole of the outer sleeve.

7. A rotating device using a bearing capable of automatically compensating for wear as claimed in claim 6, characterized in that: The pressure of the hydraulic pump is greater than the friction between the outer sleeve and the bearing seat and the main shaft propulsion force.

8. A rotating device using a bearing capable of automatically compensating for wear as claimed in claim 7, characterized in that: The bearing seat is further provided with the outer sleeve limiting screw to ensure that the outer sleeve does not retreat when the hydraulic pump is not working.

9. A rotating device using a bearing capable of automatically compensating for wear as claimed in claim 8, characterized in that: The bearing seat is provided with a liquid input pipe and a liquid output pipe, and the liquid input pipe and the liquid output pipe are respectively connected to a cooling water tank.

Images