CN218717664U

CN218717664U - Bearing box for dredging

Info

Publication number: CN218717664U
Application number: CN202222901951.9U
Authority: CN
Inventors: 朱峰; 方利刚; 傅志民; 陆文华; 冷思锌; 祁浩东; 孙宇宙
Original assignee: Cccc Shanghai Dredging Equipment Industry Co ltd
Current assignee: Cccc Shanghai Dredging Equipment Industry Co ltd
Priority date: 2022-11-01
Filing date: 2022-11-01
Publication date: 2023-03-24
Anticipated expiration: 2032-11-01

Abstract

The utility model discloses a bearing box for dredging, which comprises a bearing seat, wherein the bearing seat is used for fixing a bearing cylinder on a hull base; the pump shaft, the pump shaft is installed in the bearing barrel, is provided with the bearing group on the pump shaft, and the motor drives the impeller rotation through the drive pump shaft. This bearing box is provided with drive end bearing and output end bearing respectively through the both ends of bearing cartridge, thrust bearing sets up the center at the bearing cartridge, the drive end bearing and the output end bearing at both ends mainly absorb radial load, middle thrust bearing mainly absorbs axial load, under the effect of external force, will bear axial load through middle thrust bearing, make the bearing atress more stable, can take place the dislocation between avoiding pump shaft and the bearing, and because the bearing all adopts self-aligning roller bearing, make the small amount of dislocation that the machining tolerance between the permission load impact or axle and the bearing leads to appear, make the bearing can normal operating, prevent the damage of bearing or axle.

Description

Bearing box for dredging

Technical Field

The utility model relates to a dredge equipment technical field, especially relate to a bearing box for dredging.

Background

Various dredge pumps are used in aspects of dredging channels, dredging fields, building embankments, dredging urban sewage pipelines and the like, the dredge pumps adopted in the current market comprise dredging pumps and slurry pumps, the suction force generated by rotation of pump impellers is adopted to suck silt, slurry or sundries, and the dredge pumps are required to be connected with the dredge pumps through bearing boxes to drive pump shafts to work, so that the dredge pumps can run stably.

At present, in the bearing box on the market, the bearings are installed at two ends in the usual adoption between the inside of the bearing cylinder and the pump shaft, but the bearing box is operated for a long time at the pump shaft, and the axial load between the bearing box and the pump shaft can be increased, so that the dislocation can be generated between the pump shaft and the bearings, the normal operation of the bearings can be influenced, and the service life of the bearings is shortened.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects in the prior art, and provides a bearing box for dredging, which comprises a bearing seat, wherein the bearing seat is used for fixing a bearing cylinder on a hull base;

the pump shaft is arranged in the bearing barrel, a bearing group is arranged on the pump shaft, and the motor drives the pump shaft to drive the impeller to rotate;

and the sealing structures are arranged at two ends of the bearing cylinder and are used for preventing the lubricating oil inside the bearing cylinder from leaking and isolating water outside the bearing.

Preferably, the bearing group comprises a driving end bearing, an output end bearing and a thrust bearing, the driving end bearing and the output end bearing are respectively arranged at two ends of the pump shaft, the thrust bearing is arranged at the center of the pump shaft, and the driving end bearing, the output end bearing and the thrust bearing are all fixed inside the bearing barrel.

Preferably, the sealing structure comprises a sealing ring and an O-shaped ring, the sealing ring is fixed on the outer sides of the driving end bearing and the output end bearing, the inner side of the O-shaped ring is fixed with the sealing ring, and the outer side of the O-shaped ring is fixed with the end cover.

Preferably, the number of the end covers is two, and the end covers are arranged at two ends of the bearing barrel.

Preferably, the outer ring of the bearing at the driving end is provided with a bearing sleeve, and an oil groove is formed in the bearing sleeve.

Preferably, a thrust ring is fixed inside the bearing barrel and used for supporting a thrust bearing in the middle of the bearing barrel.

Preferably, a thrust bearing retaining shoulder is fixed inside the bearing cylinder, and a spring ejector pin and a disc spring are arranged on the thrust bearing retaining shoulder.

Preferably, the sealing structure is provided with two.

Preferably, the sealing ring and the O-shaped ring are arranged in two groups, and each group is provided with two sealing rings.

Preferably, the driving end bearing, the output end bearing and the thrust bearing all adopt self-aligning roller bearings.

The technical scheme has the following advantages or beneficial effects:

the utility model discloses a both ends of a bearing section of thick bamboo are provided with drive end bearing and output end bearing respectively, thrust bearing sets up the center at a bearing section of thick bamboo, the drive end bearing and the main radial load that absorbs of output end bearing at both ends, middle thrust bearing mainly absorbs axial load, under the effect of external force, axial load will be born through middle thrust bearing, make the bearing atress more stable, can take place the dislocation between avoiding pump shaft and the bearing, and because the bearing all adopts self-aligning roller bearing, make the small amount of dislocation that the machining tolerance between the load impact or axle and the bearing leads to appear in the permission, make the bearing can normal operation, prevent the damage of bearing or axle.

Drawings

Fig. 1 is a schematic structural diagram of a bearing housing according to an embodiment of the present invention;

fig. 2 is a cross-sectional view of a bearing housing according to an embodiment of the present invention;

FIG. 3 is a schematic view of a structure of a bearing cartridge of the bearing housing of FIG. 1;

fig. 4 is an enlarged view of a portion of a of the bearing cartridge of fig. 3.

Illustration of the drawings:

1. a bearing seat; 2. a bearing cartridge; 3. a pump shaft; 4. a sealing structure; 5. a drive end bearing; 6. an output end bearing; 7. a thrust bearing; 8. an end cap; 9. a bearing housing; 10. a thrust ring; 11. a thrust bearing shoulder; 41. a seal ring; 42. and an O-shaped ring.

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.

The first embodiment is as follows:

as shown in fig. 1-4, the bearing box for dredging of the present invention comprises a bearing seat 1, wherein the bearing seat 1 is used for fixing a bearing cartridge 2 on a hull base; the pump shaft 3 is arranged in the bearing barrel 2, a bearing group is arranged on the pump shaft 3, and the motor drives the impeller to rotate by driving the pump shaft 3; the sealing structures 4 are arranged at two ends of the bearing barrel 2, and the sealing structures 4 are used for preventing lubricating oil in the bearing barrel 2 from leaking and isolating water outside the bearing; the pump shaft 3 is installed in bearing cartridge 2, has installed the spare part of most bearing box on it, thereby the motor drives the impeller rotation through the drive pump shaft, and the bearing cartridge supports the pump shaft, makes it easily rotatory, through being connected 3 output ends of pump shaft and dredge pump for pump shaft 3 in the bearing cartridge 2 can drive dredge pump impeller and carry out work, conveniently fixes bearing cartridge 2 on the hull base through bearing frame 1.

As shown in fig. 1 and fig. 2, further, two end caps 8 are provided and are disposed at two ends of the bearing barrel 2, a thrust collar 10 is fixed inside the bearing barrel 2, the thrust collar 10 is used for supporting the thrust bearing 7 in the middle of the bearing barrel 2, and two sealing structures 4 are provided; end caps 8 are mounted at both ends of the bearing cartridge 2, their configuration depends on the type of shaft seal, and thrust rings 10 are mounted in the bearing cartridge 2 for supporting the thrust bearings 7.

As shown in fig. 2 and 3, the bearing set includes a driving end bearing 5, an output end bearing 6 and a thrust bearing 7, the driving end bearing 5 and the output end bearing 6 are respectively disposed at two ends of the pump shaft 3, the thrust bearing 7 is disposed at the center of the pump shaft 3, and the driving end bearing 5, the output end bearing 6 and the thrust bearing 7 are all fixed inside the bearing barrel 2; the two ends of the bearing cylinder 2 are respectively provided with a driving end bearing 5 and an output end bearing 6, the thrust bearing 7 is arranged at the center of the bearing cylinder 2, the driving end bearing 5 and the output end bearing 6 at the two ends mainly absorb radial load, the middle thrust bearing 7 mainly absorbs axial load, under the action of a water hammer, the axial load is borne by the middle thrust bearing 7, the bearing stress is more stable, the dislocation between the pump shaft and the bearing is avoided, and because the bearing all adopts a self-aligning roller bearing, a small amount of dislocation caused by the load impact or the processing tolerance between the shaft and the bearing is allowed to appear, the bearing can normally run, and the damage of the bearing or the shaft is prevented.

Example two:

as shown in fig. 1 and fig. 2, on the basis of the first embodiment, the utility model provides a technical solution: the sealing structure 4 comprises a sealing ring 41 and an O-shaped ring 42, the sealing ring 41 is fixed on the outer sides of the driving end bearing 5 and the output end bearing 6, the inner side of the O-shaped ring 42 is fixed with the sealing ring 41, and the outer side of the O-shaped ring 42 is fixed with the end cover 8; axial sealing pressure is maintained by O-ring 42, sealing between seal ring 41 and end cap 8 is maintained, and torque is transmitted through frictional resistance, helping seal ring 41 to seat.

As shown in fig. 4, a bearing sleeve 9 is arranged on the outer ring of the drive end bearing 5, an oil groove is arranged inside the bearing sleeve 9, a thrust bearing shoulder 11 is fixed inside the bearing cylinder 2, a spring ejector pin and a disc spring are arranged on the thrust bearing shoulder 11, two groups of sealing rings 41 and O-rings 42 are arranged, two groups are arranged in each group, and the drive end bearing 5, the output end bearing 6 and the thrust bearing 7 all adopt self-aligning roller bearings; thrust bearing keeps off shoulder 11 and provides the pretightning force for thrust bearing 7, is thrust shaft through the oil groove, and 7 provide lubrication, and thrust bearing keeps off 11 inside keys that splines that have for prevent that the thrust bearing outer lane is rotatory.

The working principle is as follows: the staff fixes bearing cylinder 2 on the hull base through bearing frame 1, then be connected 3 output ends of pump shaft with the dredge pump, make the pump shaft 3 in the bearing cylinder 2 can drive the dredge pump impeller and carry out work, both ends through bearing cylinder 2 are provided with drive end bearing 5 and output end bearing 6 respectively, thrust bearing 7 sets up the center at bearing cylinder 2, the drive end bearing 5 and the output end bearing 6 at both ends mainly absorb radial load, middle thrust bearing 7 mainly absorbs axial load, under the effect of external force, will bear axial load through middle thrust bearing 7, make the bearing atress more stable, can take place the dislocation between avoiding pump shaft and the bearing, and because the bearing all adopts self-aligning roller bearing, make the small amount of dislocation that the machining tolerance between the load impact or axle and the bearing leads to appear in the permission, make the bearing can normal operating, prevent the damage of bearing or axle.

Finally, it should be noted that: 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 and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.

Claims

1. Bearing housing for dredging, comprising a bearing block (1), characterized in that the bearing block (1) is used for fixing a bearing cartridge (2) on a hull foundation;

the pump shaft (3) is installed in the bearing barrel (2), a bearing group is arranged on the pump shaft (3), and the motor drives the impeller to rotate by driving the pump shaft (3);

and the sealing structures (4) are arranged at two ends of the bearing cylinder (2), and the sealing structures (4) are used for preventing lubricating oil inside the bearing cylinder (2) from leaking and isolating water outside the bearing.

2. Bearing housing for dredging, according to claim 1, characterized in that: the bearing group comprises a driving end bearing (5), an output end bearing (6) and a thrust bearing (7), wherein the driving end bearing (5) and the output end bearing (6) are respectively arranged at two ends of the pump shaft (3), the thrust bearing (7) is arranged at the center of the pump shaft (3), and the driving end bearing (5), the output end bearing (6) and the thrust bearing (7) are all fixed inside the bearing cylinder (2).

3. Bearing housing for dredging, according to claim 1, characterized in that: seal structure (4) are including sealing ring (41) and O type circle (42), sealing ring (41) are fixed in drive end bearing (5) and output end bearing (6) outside, O type circle (42) inboard is fixed with sealing ring (41), O type circle (42) outside is fixed with end cover (8).

4. Bearing housing for dredging, according to claim 3, characterized in that: the number of the end covers (8) is two, and the end covers are arranged at two ends of the bearing cylinder (2).

5. Bearing housing for dredging, according to claim 2, characterized in that: the outer ring of the drive end bearing (5) is provided with a bearing sleeve (9), and an oil groove is formed in the bearing sleeve (9).

6. Bearing housing for dredging, according to claim 1, characterized in that: a thrust ring (10) is fixed inside the bearing barrel (2), and the thrust ring (10) is used for supporting a thrust bearing (7) in the middle of the bearing barrel (2).

7. Bearing housing for dredging, according to claim 2, characterized in that: a thrust bearing retaining shoulder (11) is fixed inside the bearing barrel (2), and a spring ejector pin and a disc spring are arranged on the thrust bearing retaining shoulder (11).

8. Bearing housing for dredging, according to claim 1, characterized in that: the sealing structure (4) is provided with two.

9. Bearing housing for dredging, according to claim 3, characterized in that: the sealing rings (41) and the O-shaped rings (42) are arranged in two groups, and each group is provided with two sealing rings.

10. Bearing housing for dredging, according to claim 2, characterized in that: the driving end bearing (5), the output end bearing (6) and the thrust bearing (7) are all self-aligning roller bearings.