CN213598403U - Self-adjustable tilting pad thrust bearing - Google Patents

Abstract

The self-adjustable tilting pad thrust bearing comprises a bearing shell and a plurality of pad blocks, wherein the bearing shell comprises two semicircular pad bodies, the two semicircular pad bodies are connected through bolts, the pad blocks are uniformly distributed on one side or two sides of the bearing shell, and the cross section of each pad block is in a fan-ring shape; in conclusion, the bearing thrust pad has reasonable design, the pad does not need other fixing devices, the structure of the traditional thrust bearing is simplified, the pad surface is not easy to deform, the abrasion of the supporting position is reduced, the operation noise is reduced, the bearing capacity is enhanced, when the bearing thrust pad is stressed unevenly, the thrust pad can flexibly swing back and forth like a seesaw, and finally the effect that the bearing can be automatically adjusted under different working conditions is achieved.

Description

Self-adjustable tilting pad thrust bearing

Technical Field

The utility model belongs to the technical field of bearing design and manufacturing, concretely relates to tilting pad thrust bearing that can adjust by oneself.

Background

The bearing is a core lubrication bearing part of various rotating machines, and has a vital influence on the performance indexes of the whole system, such as bearing capacity, friction power consumption, service life, running stability and the like. The bearings are various in types and complex in classification, and can be divided into rolling bearings and sliding bearings according to the movement mode, thrust bearings and radial bearings according to the relative position of the operation direction and the bearing force direction, and oil lubrication, water lubrication, gas lubrication, dry friction self-lubricating bearings and the like according to the type of a lubricant, so the industrial background of the application field of the bearings needs to be considered in bearing design and performance evaluation; at present, the axial thrust bearing causes serious deformation of a bearing bush surface under the action of unbalance loading, and is easy to have faults of abrasion, peeling, layering, noise and the like; the tile and the bearing shell need a fixing device to fix the tile, so that the processing difficulty is high, the use is complex, and the dynamic performance is poor.

Disclosure of Invention

The utility model discloses a solve the weak point among the prior art, the utility model provides a tilting pad thrust bearing that can adjust by oneself, it is complicated to have solved traditional tile structure through structural design, be difficult to fix, the relatively poor defect of dynamic performance, this bearing reasonable in design, the tile does not need other fixing device, traditional thrust bearing's structure has been simplified, and tile face non-deformable, the wearing and tearing of support position have been reduced, reduce the running noise, bearing capacity strengthens, when bearing thrust tile atress is uneven, the thrust tile can make a round trip the nimble swing as the seesaw is the same, finally reach the effect that the bearing can automatically regulated under different operating modes.

In order to solve the technical problem, the utility model adopts the following technical scheme: the self-adjustable tilting pad thrust bearing comprises a bearing shell and a plurality of pads, wherein the bearing shell comprises two semicircular pads which are connected through bolts, the pads are uniformly distributed on one side or two sides of the bearing shell, the cross section of each pad is in a fan ring shape, a Babbitt metal layer is arranged on the front side of each pad, a convex post surface is arranged on the back side of each pad, a plurality of groove surfaces are arranged on the inner side of each pad, the pads are arranged in the groove surfaces, the bearing shell fixedly supports the pads through the convex post surfaces and the groove surfaces on the back side of each pad, the convex post surfaces of the pads are in contact with the groove surfaces of the pads, and the curvature radius of the groove surfaces of the pads is larger than that of the convex post surfaces of the pads; all be provided with a plurality of inlet ports on two tile bodies, every inlet port is located between two adjacent tile fragments.

Adopt above-mentioned technical scheme, the utility model discloses following beneficial effect has: when the utility model is installed, the convex column surface on the back surface of the tile is fixed on the groove surface on the bearing shell, thereby optimizing the structure of the thrust bearing and leading the tile to be more convenient to install and fix; this device carries out the during operation, and the inlet port begins the fuel feeding, because the structural design of this device, the cylinder contact that tile piece and bearing housing are different through two curvature radii, so can form the squeeze film at the both sides of the position of bearing housing and tile piece contact, lubricating oil not only plays the lubrication action, also has certain damping effect, when the rotor takes place the slope, tile piece follow-up slope, the tile piece will automatic adjustment, ensure thrust surface good contact, thereby the dynamic behavior of bearing has been optimized.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

FIG. 2 is a schematic structural view of a pad;

FIG. 3 is a perspective view of a pad;

FIG. 4 is a schematic structural view of a bearing housing;

fig. 5 is a cross-sectional view of the present invention;

FIG. 6 is a cross-sectional view of the pad and bearing housing interface.

Detailed Description

As shown in fig. 1-6, the self-adjustable tilting pad thrust bearing of the present invention comprises a bearing housing 1 and a plurality of pads 2, wherein the bearing housing 1 comprises two semicircular pads 3, the two semicircular pads 3 are connected by bolts, the plurality of pads 2 are uniformly distributed on one side or both sides of the bearing housing 1, the cross section of the pads 2 is in a fan-ring shape, the front surface of the pads 2 is provided with a babbitt metal layer 4, the back surface of the pads 2 is provided with a convex post surface 5, the inner side surface of the pads 3 is provided with a plurality of groove surfaces 6, the pads 2 are installed in the groove surfaces 6, the bearing housing 1 fixedly supports the pads 2 by the convex post surface 5 and the groove surfaces 6 on the back surface of the pads 2, the convex post surface 5 of the pads 2 is in contact with the groove surfaces 6 of the pads 3, the curvature radius of the groove surfaces 6 of the pads 3 is greater than the curvature radius of the convex post surface 5 of the pads 2, the pads 2 form a ring-shaped alloy thrust plane, the axial thrust surface on the rotor is contacted with the thrust plane formed by the pads 2; according to the requirement of a specific shaft, a double-side thrust bearing or a single-side bearing can be selected; all be provided with a plurality of inlet ports 7 on two tile bodies 3, every inlet port 7 is located between two adjacent tile 2.

The utility model discloses mainly include bearing housing 1 and a plurality of tile 2, it has a plurality of inlet ports 7 to open respectively on two tile bodies 3, when bearing during operation, inlet port 7 begins the fuel feeding, oil can get into the bearing, because the rotor can take place the slope at the during operation, and then drive the skew of tile 2, because there is lubricating oil between the projection face 5 at the 2 backs of tile and the recess face 6 on the bearing housing 1, so can form certain extrusion oil film between them, the oil film has certain damping action to the adjustment of tile 2, optimize the dynamic behavior of rotor.

The number of the pads 2 is eight in this embodiment, and in the specific bearing design, the number of the pads 2 can be designed differently according to the design.

The present embodiment is not intended to limit the shape, material, structure, etc. of the present invention in any form, and all of the technical matters of the present invention belong to the protection scope of the present invention to any simple modification, equivalent change and modification made by the above embodiments.

Claims (1)

1. Tilting pad thrust bearing that can adjust by oneself, its characterized in that: the bearing comprises a bearing shell and a plurality of tiles, wherein the bearing shell comprises two semicircular tiles which are connected through bolts, the tiles are uniformly distributed on one side or two sides of the bearing shell, the cross section of each tile is in a sector ring shape, a Babbitt metal layer is arranged on the front side of each tile, a convex column surface is arranged on the back side of each tile, a plurality of groove surfaces are arranged on the inner side surface of each tile, the tiles are arranged in the groove surfaces, the bearing shell fixedly supports the tiles through the convex column surfaces and the groove surfaces on the back side of each tile, the convex column surfaces of the tiles are in contact with the groove surfaces of the tiles, and the curvature radius of the groove surfaces of the tiles is larger than that of each convex column surface of each tile; all be provided with a plurality of inlet ports on two tile bodies, every inlet port is located between two adjacent tile fragments.

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