Three-row sliding turntable bearing

Abstract

The utility model discloses a three-row sliding turntable bearing. The three-row sliding turntable bearing comprises a bearing outer ring, the bearing outer ring is provided with two axial thrust sliding raceways and a radial sliding raceway, and the two axial thrust sliding raceways are respectively a first axial sliding raceway and a second axial sliding raceway; the first axial sliding raceway is mounted in an axial groove of the bearing outer ring and is fixedly connected with the axial groove through a connecting screw to form a first axial thrust raceway of the outer ring; the second axial sliding raceway is mounted in an axial groove of the bearing outer ring and is fixedly connected with the axial groove through a connecting screw to form an axial second thrust raceway of the outer ring; according to the three-row sliding turntable bearing, the axial raceways and the radial raceways are in sliding design, no rolling body is arranged between the raceways, the raceways are in surface contact, the contact area is increased, the raceway load and the contact stress are reduced, the ferrule is made of aluminum alloy or stainless steel, the weight of the bearing can be well reduced, and the service life of the bearing is prolonged. And meanwhile, excellent corrosion resistance is achieved.

Description

Technical Field

[0001] The present application relates to the technical field of turntable bearings, and in particular to a three-row sliding turntable bearing. Background Art

[0002] General rolling slewing bearings can bear axial force, radial force and overturning moment at the same time, and have flexible rotation and high load-bearing capacity. They are widely used in various engineering machinery and industrial equipment. However, for some special occasions, while the load-bearing capacity is required to be met, the structure must be light in weight, high in load-bearing capacity, corrosion-resistant and non-magnetic. These applications require the ring material to have high corrosion resistance and non-magnetic properties, and the raceway must have certain self-lubricating properties. Traditional slewing bearings are generally made of medium-carbon alloy steel through raceway quenching. Therefore, it is difficult for the ring to be non-magnetic and corrosion-resistant, and its self-lubricating properties are not good. Summary of the invention

[0003] The present application provides a three-row sliding turntable bearing, whose axial raceway and radial raceway are of sliding design, there are no rolling elements between the raceways, and the raceways are in surface contact, which increases the contact area and reduces the raceway load and contact stress. The rings are made of aluminum alloy or stainless steel as base rings, which can greatly reduce the weight of the bearing and have excellent corrosion resistance. The raceways are inlaid with POM, PTFE, or copper alloy, have excellent self-lubricating properties, are non-magnetic and lightweight, and can effectively solve the problems in the background technology.

[0004] To achieve the above objectives, the present application provides the following technical solutions: a three-row sliding turntable bearing, comprising a bearing outer ring; the bearing outer ring has two axial thrust sliding raceways and one radial sliding raceway, and the two axial thrust sliding raceways are respectively a first axial sliding raceway and a second axial sliding raceway.

[0005] The first axial sliding raceway is installed in the axial groove of the outer ring of the bearing and is fixedly connected with the first axial raceway connecting screws to form the axial first thrust raceway of the outer ring.

[0006] The second axial sliding raceway is installed in the axial groove of the outer ring of the bearing and is fixedly connected with the second axial raceway connecting screws to form the axial second thrust raceway of the outer ring.

[0007] The radial sliding raceway is installed in the radial groove of the bearing outer ring and is fixedly connected with radial raceway connecting screws to form the axial radial raceway of the outer ring.

[0008] The first axial sliding raceway contacts the axial thrust raceway of the first inner ring of the bearing and performs relative sliding motion.

[0009] The second axial sliding raceway contacts the axial thrust raceway of the second inner ring of the bearing and performs relative sliding motion.

[0010] The radial sliding raceway contacts the radial raceway of the first inner ring of the bearing and performs relative sliding motion.

[0011] The materials of the first axial sliding raceway, the second axial sliding raceway and the radial sliding raceway are all made of POM, PTFE or wear-resistant copper alloy with good self-lubricating performance.

[0012] Preferably, the first inner ring of the bearing and the second inner ring of the bearing are connected together by inner ring connecting screws.

[0013] Preferably, sealing rings are installed at both upper and lower ends of the outer side surface of the bearing outer ring.

[0014] Preferably, the first axial sliding raceway, the second axial sliding raceway and the radial sliding raceway are all designed with convex profiles to reduce friction and edge stress.

[0015] Compared with the prior art, the beneficial effects of this application are:

[0016] 1. The axial raceway and radial raceway of the three-row sliding turntable bearing are designed for sliding. There are no rolling elements between the raceways. The raceways are in surface contact, which increases the contact area and reduces the raceway load and contact stress. The rings are made of aluminum alloy or stainless steel as the base rings, which can greatly reduce the weight of the bearing and have excellent corrosion resistance. The raceways are inlaid with POM, PTFE, or copper alloy, and have excellent self-lubricating, non-magnetic and lightweight properties.

[0017] 2. The first axial sliding raceway, the second axial sliding raceway and the radial sliding raceway of the bearing outer ring are made of self-lubricating and wear-resistant materials and are embedded in the groove of the first bearing. Therefore, the bearing raceway does not need to be quenched, and the ring manufacturing process is more convenient;

[0018] 3. The first axial sliding raceway, the second axial sliding raceway and the radial sliding raceway are split-type designs, which are easy to replace and maintain. During maintenance, only the axial and radial sliding raceways need to be replaced, which reduces the maintenance cost of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the structure of this application.

[0020] In the figure: 1 bearing outer ring, 2 bearing first inner ring, 3 bearing second inner ring, 4 inner ring connecting screws, 5 sealing ring, 6 radial sliding raceway, 7 first axial sliding raceway, 8 first axial raceway connecting screws, 9 second axial sliding raceway, 10 second axial raceway connecting screws, 11 radial raceway connecting screws. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0022] In the description of this application, if the orientation description is involved, for example, the orientation or position relationship indicated by "upper", "lower", "front", "back", "left", "right", etc. is based on the attached Figure 1 The orientation or position relationship shown is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation of the present application. When a feature is referred to as being "set", "fixed", or "connected" to another feature, it can be directly set, fixed, or connected to the other feature, or it can be indirectly set, fixed, or connected to the other feature.

[0023] See also Figure 1 The present application provides the following technical solutions: a three-row sliding turntable bearing, comprising a bearing outer ring 1; the bearing outer ring 1 has two axial thrust sliding raceways and one radial sliding raceway 6, and the two axial thrust sliding raceways are respectively a first axial sliding raceway 7 and a second axial sliding raceway 9.

[0024] Specifically, the first axial sliding raceway 7, the second axial sliding raceway 9 and the radial sliding raceway 6 of the bearing outer ring 1 are made of self-lubricating and wear-resistant materials and are embedded in the groove of the first bearing. Therefore, the bearing raceways do not need to be quenched, and the ring manufacturing process is more convenient.

[0025] The first axial sliding raceway 7 is installed in the axial groove of the bearing outer ring 1 and is fixedly connected with the first axial raceway connecting screws 8 to form the axial first thrust raceway of the outer ring.

[0026] The second axial sliding raceway 9 is installed in the axial groove of the bearing outer ring 1 and is fixedly connected with the second axial raceway connecting screws 10 to form the axial second thrust raceway of the outer ring.

[0027] The radial sliding raceway 6 is installed in the radial groove of the bearing outer ring 1 and is fixedly connected with radial raceway connecting screws 11 to form an axial radial raceway of the outer ring.

[0028] The first axial sliding raceway 7 contacts the axial thrust raceway of the first inner ring 2 of the bearing and performs relative sliding motion.

[0029] The second axial sliding raceway 9 contacts the axial thrust raceway of the second inner ring 3 of the bearing and performs relative sliding motion.

[0030] Specifically, the bearing outer ring 1, the bearing first inner ring 2 and the bearing second inner ring 3 are made of aluminum alloy or stainless material, which can greatly reduce the weight of the bearing and achieve non-magnetic properties and good corrosion resistance.

[0031] The radial sliding raceway 6 contacts the radial raceway of the first inner ring 2 of the bearing and performs relative sliding motion.

[0032] Specifically, the first axial sliding raceway 7, the second axial sliding raceway 9 and the radial sliding raceway 6 of the bearing are of split design, which is easy to replace and maintain. During maintenance, only the axial and radial sliding raceways need to be replaced, thereby reducing equipment maintenance costs.

[0033] Furthermore, the first inner ring 2 of the bearing and the second inner ring 3 of the bearing are connected together by inner ring connecting screws 4 .

[0034] Specifically, the provision of the inner ring connecting screws 4 facilitates the rapid assembly of the first inner ring 2 of the bearing and the second inner ring 3 of the bearing.

[0035] Furthermore, the materials of the first axial sliding raceway 7, the second axial sliding raceway 9 and the radial sliding raceway 6 are all made of POM, PTFE or wear-resistant copper alloy with good self-lubricating properties.

[0036] Specifically, the use of POM, PTFE or wear-resistant copper alloy can effectively ensure the self-lubricating performance of the sliding raceway.

[0037] Furthermore, sealing rings 5 ​​are installed at both upper and lower ends of the outer side surface of the bearing outer ring 1.

[0038] Specifically, the sealing ring 5 can prevent external dust from entering the interior of the turntable bearing.

[0039] Furthermore, the first axial sliding raceway 7, the second axial sliding raceway 9 and the radial sliding raceway 6 are all designed with convex profiles to reduce friction and edge stress.

[0040] Specifically, the contours of the first axial sliding raceway 7 , the second axial sliding raceway 9 and the radial sliding raceway 6 are convenient to design and can be flexibly designed according to different loads and rotational moments.

[0041] When in use: install the first axial sliding raceway 7 in the axial groove of the bearing outer ring 1, and fix it with the first axial raceway connecting screw 8; install the second axial sliding raceway 9 in the axial groove of the bearing outer ring 1, and fix it with the second axial raceway connecting screw 10; install the radial sliding raceway 6 in the radial groove of the bearing outer ring 1, and fix it with the radial raceway connecting screw 11; place the above-assembled bearing outer ring 1 on the bearing first inner ring 2; place the bearing second inner ring 3 on the bearing first inner ring 2 through the stop fit, and connect it with the connecting screw 4 to complete the bearing assembly.

[0042] Although the embodiments of the present application have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application, and that the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A three-row sliding turntable bearing, characterized in that: It comprises a bearing outer ring (1); the bearing outer ring (1) has two axial thrust sliding raceways and one radial sliding raceway (6), the two axial thrust sliding raceways are respectively a first axial sliding raceway (7) and a second axial sliding raceway (9); The first axial sliding raceway (7) is installed in the axial groove of the bearing outer ring (1) and is fixedly connected with the first axial raceway connecting screw (8) to form the axial first thrust raceway of the outer ring; The second axial sliding raceway (9) is installed in the axial groove of the bearing outer ring (1) and is fixedly connected with the second axial raceway connecting screw (10) to form the axial second thrust raceway of the outer ring; The radial sliding raceway (6) is installed in the radial groove of the bearing outer ring (1) and is fixedly connected by radial raceway connecting screws (11) to form an axial radial raceway of the outer ring; The first axial sliding raceway (7) contacts the axial thrust raceway of the first inner ring (2) of the bearing to perform relative sliding motion; The second axial sliding raceway (9) contacts the axial thrust raceway of the second inner ring (3) of the bearing to perform relative sliding motion; The radial sliding raceway (6) contacts the radial raceway of the first inner ring (2) of the bearing to perform relative sliding motion; The materials of the first axial sliding raceway (7), the second axial sliding raceway (9) and the radial sliding raceway (6) are all made of POM, PTFE or wear-resistant copper alloy with good self-lubricating properties.

2. A three-row sliding turntable bearing according to claim 1, characterized in that: The first inner ring (2) of the bearing and the second inner ring (3) of the bearing are connected together via inner ring connecting screws (4).

3. The three-row sliding turntable bearing according to claim 1, characterized in that: Sealing rings (5) are installed at both upper and lower ends of the outer side surface of the bearing outer ring (1).

4. The three-row sliding turntable bearing according to claim 1, characterized in that: The first axial sliding raceway (7), the second axial sliding raceway (9) and the radial sliding raceway (6) are all designed with convex profiles to reduce friction and edge stress.

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