CN205207428U - Elasticity tilting pad slide bearing - Google Patents

Abstract

An elastic tilting pad sliding bearing, which includes a bearing body, an elastic tilting pad and a bearing cover; several elastic tilting pads are arranged symmetrically inside the bearing body, and the bearing covers are arranged on both sides of the elastic tilting pad and The two sides of the bearing body are fitted; each elastic tilting pad includes a tilting pad and an elastic body arranged inside the tilting pad. There is an installation gap between the elastic body and the tilting pad, and the tilting pad and the elastic The two ends of the body are connected with fixed plates and fastened by screws; it solves the problem of complex and expensive processing of elastic tilting tiles; and the overall structure is scientific and reasonable, easy to install and use, simple in production process, and reduces maintenance costs , the manufacturing cost is low, and it is easy to be popularized and used; it can be widely used in supporting use of various tilting pad sliding bearings.

Description

An Elastic Tilting Pad Sliding Bearing

technical field

The utility model relates to an elastic tiltable pad sliding bearing.

Background technique

Radial tilting pad sliding bearings are widely used in high-speed rotating machinery such as steam turbines, compressors, and gearboxes to solve the problem of oil film oscillation when the rotor supported by sliding bearings runs at high speed; For stable operation under high speed conditions, it is particularly important to select sliding bearings with strong vibration damping capabilities. The tilting pad radial sliding bearings have good vibration damping properties, strong bearing capacity, low power consumption, simple structure, and convenient maintenance. , It is the preferred choice for modern high-power, high-speed rotating machinery.

The existing elastic tilting pad sliding bearings are generally manufactured by integrally processing the elastic tilting pads, so that the produced tilting pad sliding bearings are not only complicated in processing technology, but also expensive in cost; especially during use, if If one of the tilting tiles is damaged, the entire tilting tile must be replaced, resulting in high maintenance costs.

Contents of the invention

In view of the above situation, the purpose of this utility model is to provide an elastic tilting pad sliding bearing, which solves the problem of complex and expensive manufacturing process of the elastic tilting pad by making the elastic tilting pad separately and setting an installation gap; Moreover, the overall structure is scientific and reasonable, the installation and use are convenient, the production process is simple, the maintenance cost is reduced, the manufacturing cost is low, and it is easy to be popularized and used.

In order to achieve the above object, an elastic tilting pad sliding bearing comprises a bearing body, an elastic tilting pad and a bearing cap; the elastic tilting pads are several and arranged symmetrically inside the bearing body, and the bearing cap is arranged on The two sides of the elastic tilting pad are fitted with the notches on both sides of the bearing body; each elastic tilting pad includes a tilting pad and an elastic body arranged inside the tilting pad, and the elastic body and the tilting pad There is an installation gap between them.

In order to optimize the structure and effect, the further measure is: the elastic tilting pad is connected to the bearing caps on both sides through the pin shaft.

Both ends of the tilting tile are provided with threaded holes for connecting screws.

The two ends of the tiltable tile and the elastic body are connected with fixing plates and fastened by screws.

Bearing caps are fitted in the notches on both sides of the bearing body and fixedly connected by bolts.

The outer diameter Ra of the tilting pad is smaller than the inner diameter Rh of the bearing body, and the tilting pad can tilt on the inner side of the bearing body around the pin axis.

The outer diameter Rt of the elastic body is larger than the inner diameter Rb of the tilting pad, that is, there is an installation gap between the elastic body and the tilting pad.

The outer diameter Rt of the elastic body and the inner diameter Rp of the elastic body are concentric circles.

The utility model is an elastic tilting pad sliding bearing, which comprises a bearing body, an elastic tilting pad and a bearing cover; the elastic tilting pads are several and arranged symmetrically inside the bearing body, and the bearing cover is arranged on an elastic tilting pad. The two sides of the tilting pad are fitted with the notches on both sides of the bearing body; each elastic tilting pad includes a tilting pad and an elastic body arranged inside the tilting pad; There is a technical solution for installation gaps; it adopts the split manufacturing of elastic tilting tiles and sets installation gaps to solve the problems of complex processing and high cost of elastic tilting tiles; and the overall structure is scientific and reasonable, easy to install and use, and the production process The utility model has the advantages of being simple, reducing the maintenance cost, lowering the manufacturing cost, and being easy to be popularized and used.

Compared with the beneficial effects produced by the prior art, the utility model:

(I) The utility model adopts an installation gap between the elastic body and the tilting pad, and the gap is filled with lubricating oil, and the elastic tilting pad can produce elastic deformation under load, that is, the gap between the elastic body and the tilting pad The gap can change, and the amount of lubricating oil in the gap also changes accordingly to form a damping structure. At this time, the elastic tilting pad radial sliding bearing can reduce the vibration of the rotor system, and improve the stability of the rotor system and the service life of the equipment. extend;

(II) The utility model adopts the bearing cover arranged on both sides of the elastic tilting pad and fitted with the two sides of the bearing body. The connection of this structure is firm and reliable, which can effectively guarantee the flexible operation of the sliding bearing;

(Ⅲ) The utility model is manufactured separately from the elastic body and the tilting pad. The elastic body can be made of Babbitt alloy poured on the base material, which realizes the simple and convenient processing process of the elastic tilting pad and reduces the manufacturing cost;

(Ⅴ) The utility model solves the problem of complex processing and high cost of elastic tilting tiles by adopting separate manufacturing of elastic tilting tiles and setting installation gaps, and at the same time improves the stability of the rotor system; and the overall structure is scientific and reasonable , easy installation and use, simple production process, long service life of equipment, reduced maintenance costs, significantly reduced manufacturing costs, broad market prospects, and easy popularization.

The utility model is widely applicable to the supporting use of various tiltable pad sliding bearings.

Below in conjunction with accompanying drawing and embodiment the utility model is described in further detail.

Description of drawings

Figure 1 is a schematic diagram of the overall structure of the utility model.

Fig. 2 is a structural sectional view of the utility model.

Fig. 3 is a structural schematic diagram of the elastic tilting tile of the present invention.

In the figure: 1-bearing body, 2-elastic tilting pad, 21-elastic body, 22-tilting pad, 3-bearing cap, 4-bolt, 5-screw, 6-fixing plate, 7-pin shaft, Rt - the outer diameter of the elastomer, Rp - the inner diameter of the elastomer, Rb - the inner diameter of the tilting pad, Ra - the outer diameter of the tilting pad, Rh - the inner diameter of the bearing body.

detailed description

Referring to the accompanying drawings, the utility model is realized in the following way: an elastic tilting pad sliding bearing, which includes a bearing body 1, an elastic tilting pad 2 and a bearing cover 3; the elastic tilting pads 2 are several and symmetrically arranged on The inner side of the bearing body 1, the bearing cap 3 is arranged on both sides of the elastic tilting pad 2 and fitted with the two sides of the bearing body 1; each elastic tilting pad 2 includes a tilting pad 22 and a set The elastic body 21 inside the tilting pad 22 has an installation gap between the elastic body 21 and the tilting pad 22 .

As shown in Figure 1, the outer diameter Ra of the tilting pad 22 of the present invention is less than the inner diameter Rh of the bearing body 1, and the tilting pad 22 can tilt on the inner side of the bearing body 1 with the pin shaft 7 as the center; the elastic The outer diameter Rt of the body 21 and the inner diameter Rp of the elastic body 21 are concentric circles, and the outer diameter Rt of the elastic body 21 is larger than the inner diameter Rb of the tilting pad 22, that is, there is an installation gap between the elastic body 21 and the tilting pad 22 , the gap is filled with lubricating oil, and the elastic tilting pad 2 can produce elastic deformation under load, that is, the gap between the elastic body 21 and the tilting pad 22 can change, and the amount of lubricating oil in the gap also follows Change and form a damping structure. At this time, the radial sliding bearing of the elastic tilting pad can reduce the vibration of the rotor system, improve the stability of the rotor system, and prolong the service life of the equipment; if the load of the sliding bearing increases, the elastic body 21 will deform When the amount increases, the inner diameter Rp becomes smaller, and the bearing capacity increases accordingly; when the load of the sliding bearing decreases, the deformation of the elastic body 21 decreases, the inner diameter Rp increases, and the stability of the sliding bearing increases.

As shown in Figure 2, the elastic tilting pad 2 of the utility model is connected to the bearing caps 3 on both sides through the pin shaft 7, and the bearing caps 3 are fitted in the notches on both sides of the bearing body 1 and fixedly connected by bolts 4. The structure can ensure that the sliding bearing connection is firm and reliable.

As shown in Figure 3, the two ends of the tilting pad 22 of the utility model are provided with threaded holes for connecting the screws 5, and the two ends of the tilting pad 22 and the elastic body 21 are connected with a fixing plate 6 and fastened by the screws 5 , the elastic body 21 and the tilting pad are made separately, the processing process is simple, and the elastic body 21 can be made by casting Babbitt alloy on the base material, which reduces the manufacturing cost.

The above is only a preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes; Within the principle, any modification, equivalent replacement, improvement, etc. should be included in the protection scope of the present utility model.

Claims (8)

1. an elasticity tilting bush sliding bearing, is characterized in that comprising bearing support (1), elasticity tilting bush (2) and bearing cap (3); Described elasticity tilting bush (2) is for several and be symmetricly set in the inner side of bearing support (1), and described bearing cap (3) is arranged at the both sides of elasticity tilting bush (2) and is equipped with the both sides seam of bearing support (1); Described each elasticity tilting bush (2) comprises tilting bush (22) and is arranged at the elastomer (21) of tilting bush (22) inner side, is provided with assemblage gap between this elastomer (21) and tilting bush (22).

2. sliding bearing according to claim 1, is characterized in that described elasticity tilting bush (2) is connected with the bearing cap (3) of both sides through bearing pin (7).

3. sliding bearing according to claim 1, is characterized in that the two ends of described tilting bush (22) are provided with tapped hole for attachment screw (5).

4. sliding bearing according to claim 3, is characterized in that the two ends of described tilting bush (22) and elastomer (21) are connected with fixed plate (6) and fastening through screw (5).

5. sliding bearing according to claim 1, is characterized in that the interior equipped bearing cap (3) of the both sides seam of described bearing support (1) and is fixedly connected with through bolt (4).

6. sliding bearing according to claim 1, it is characterized in that the external diameter Ra of described tilting bush (22) is less than the internal diameter Rh of bearing support (1), tilting bush (22) can at the interior inclination pendulum of bearing support (1) centered by bearing pin (7).

7. sliding bearing according to claim 1, it is characterized in that the external diameter Rt of described elastomer (21) is greater than the internal diameter Rb of tilting bush (22), be namely provided with assemblage gap between elastomer (21) and tilting bush (22).

8. sliding bearing according to claim 1, is characterized in that the external diameter Rt of described elastomer (21) and the internal diameter Rp of elastomer (21) is concentric circle.