CN102022434A - Sliding bearing with micro holes on inner wall thereof - Google Patents

Abstract

The invention discloses a sliding bearing with micro-holes on the inner wall. The bearing pad and the bearing lining with uniform micro-through holes on the surface are welded and rolled into a sliding bearing, and the bearing lining with uniform micro-through holes on the surface is inside the bearing pad. The total area of micro-holes on the surface of the bearing lining is 10% to 20% of the surface area of the inner wall of the bearing lining. The depth-to-diameter ratio of the micro-holes on the surface of the bearing lining is 0.05-0.2. In the present invention, the micropores on the bearing lining form micropits on the inner wall of the sliding bearing to store lubricating oil, and the oil quantity is sufficient, and a dynamic pressure lubricating oil film is formed between the bearing bush and the journal friction pair of the sliding bearing to reduce friction and wear. The elastic deformation of the bearing lining increases, the friction pair is in the state of elastic hydrodynamic lubrication, the bearing wear resistance is good, and the lubrication effect is obvious. Bearing processing is simple and easy to manufacture.

Description

Plain bearings with micro-holes in the inner wall

technical field

The invention relates to a sliding bearing, in particular to a sliding bearing with micro-holes on the inner wall.

Background technique

Sliding bearings are well known in the prior art. Under liquid lubrication conditions, the sliding surfaces are separated by lubricating oil without direct contact, which can also greatly reduce friction loss and surface wear, and the oil film also has a certain vibration-absorbing ability. A layer of antifriction material cast on the inner surface of the bearing pad to improve the friction properties of the surface forms the bearing liner. The inner wall of the bearing lining must form an oil storage structure to store lubricating oil, reduce friction and wear, and ensure the life of the sliding bearing lining-journal motion pair. The more common bearings on the market now include oil-impregnated bearings, plastic bearings, powder metallurgy bearings, etc., but there are problems such as high cost, difficult manufacturing, and insufficient strength. In view of the above, it is necessary to have a sliding bearing that is easy to manufacture, has good wear resistance, high strength, and remarkable lubricating effect.

Contents of the invention

The purpose of the present invention is to provide a sliding bearing with micropores on the inner wall, which changes the traditional manufacturing method of sliding bearings with many problems, in order to obtain a sliding bearing that is easy to manufacture, has good wear resistance, high strength and remarkable lubricating effect.

The technical scheme adopted in the present invention is:

In the invention, the bearing pad and the bearing liner with uniform micro-through holes on the surface are welded and rolled into a sliding bearing, and the bearing liner with uniform micro-through holes on the surface is inside the bearing pad.

The micro-through holes on the surface of the bearing lining are distributed in a manner parallel to the axis of the bearing and equidistant, or two adjacent columns parallel to the axis of the bearing are equally spaced and arranged in a dislocation.

The total area of the micro-through holes on the surface of the bearing lining is 10% to 20% of the surface area of the inner wall of the bearing lining.

The depth-to-diameter ratio of the micro-holes on the surface of the bearing lining is in the range of 0.05 to 0.2.

The beneficial effects that the present invention has are:

1. The bearing pads and bearing linings of the sliding bearing are welded together by resistance welding, and the micro-holes on the bearing lining form micro-pits on the inner wall of the sliding bearing. These micro-pits can be used to store lubricating oil, and the amount of lubricating oil is sufficient , A dynamic pressure oil film is formed between the sliding bearing and the journal friction pair to reduce friction and wear and ensure the life of the moving pair.

2. When the bearing lining and the bearing tile are not welded firmly, the elastic deformation of the bearing lining will increase, and the dynamic pressure oil film between the sliding bearing and the journal friction pair will be in the state of elastohydrodynamic lubrication, and the bearing has good wear resistance and lubrication effect obvious.

3. The micro pits on the inner surface of the bearing are evenly distributed and regular, and the processing is simple; the bearing lining and the bearing tile are joined by resistance welding, which is easy to manufacture.

Description of drawings

Figure 1 is a schematic diagram of the overall structure of a sliding bearing with micropores on the inner wall;

Fig. 2 is a sliding bearing bush with evenly distributed micropores on the inner wall;

Fig. 3 is a sliding bearing bush with evenly distributed dislocation micropores on the inner wall;

Among the figure: 1, bearing pad, 2, bearing lining.

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

As shown in Figure 1, a sliding bearing with micropores on the inner wall is rolled into a sliding bearing after welding the bearing pad 1 and the bearing lining 2 with uniform micro-through holes on the surface, and the bearing lining with uniform micro-through holes on the surface Sheet 2 is inside the bearing pad. The micro through-holes on the surface of the bearing lining 2 are distributed in parallel and equidistant arrangement to the bearing axis, or in two adjacent columns parallel to the bearing axis and equidistant arrangement, as shown in Fig. 2 and Fig. 3 . In the figure, the total area of the micro-holes on the surface of the bearing lining 2 is 19% of the surface area of the inner wall of the bearing lining 2, the depth-to-diameter ratio range of the micro-holes on the surface of the bearing lining 2 is 0.1, the diameter of the micro-holes on the inner wall is 2mm, and the hole distance is 4mm .

The bearing pad 1 and the bearing lining 2 of the sliding bearing are welded together by resistance welding, and the micro-holes on the bearing lining 2 form micro-pits on the inner wall of the sliding bearing. These micro-holes can be used to store lubricating oil, lubricating oil The amount of oil is sufficient, and a dynamic pressure oil film is formed between the friction pair of the sliding bearing and the journal, which reduces friction and wear and ensures the life of the moving pair. The bearing lining material is made of Babbitt alloy, and the bearing bush is made of low carbon steel. When the welding of the bearing lining and the bushing is not firm or the fatigue contact at the weld fails, the elastic deformation of the bearing lining will increase, and the dynamic pressure oil film between the sliding bearing and the journal friction pair will be reduced. In the state of elastohydrodynamic lubrication, the bearing has good wear resistance and obvious lubricating effect. The micro pits on the inner surface of the bearing are distributed evenly and regularly, and the hole size is in the order of millimeters. The punching machine can meet the processing requirements, and the processing is simple; the bearing bush and the shaft sleeve are joined by resistance welding, which is easy to manufacture.

The above specific embodiments are used to explain the present invention, rather than to limit the present invention. Within the spirit of the present invention and the protection scope of the claims, any modification and change made to the present invention will fall into the protection scope of the present invention.

Claims (4)

1. the sliding bearing of an inner wall belt micropore is characterized in that: be rolled into sliding bearing had the bearing liner welding of even micro through hole by bearing shell sheet and surface after, the surface has the bearing bush of even micro through hole in bearing shell inside.

2. the sliding bearing of a kind of inner wall belt micropore according to claim 1 is characterized in that: the described bearing bush surface micro through hole regularity of distribution is equidistant for, equidistantly arrangement or with bearing axis parallel adjacent two parallel with bearing axis are listed as, dislocation is arranged.

3. the sliding bearing of a kind of inner wall belt micropore according to claim 1 is characterized in that: the described bearing bush surface micro through hole gross area is 10% ~ 20% of a bearing bush inner wall surface area.

4. the sliding bearing of a kind of inner wall belt micropore according to claim 1 is characterized in that: described bearing bush surface micro through hole aspect ratio scope is 0.05 ~ 0.2.

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