Double-raceway slewing bearing

Abstract

The utility model discloses a slewing bearing with double raceways, which relates to the technical field of slewing bearings, and comprises a slewing bearing consisting of an inner ring, an outer ring and a rolling body, the outer side of the outer ring is provided with an outer viewing port communicated with an upper raceway, the inner side of the inner ring is provided with an inner viewing port communicated with a lower raceway, and the inner viewing port is provided with a lower viewing port communicated with a lower raceway. The outer observation opening and the first plugging block are used for providing channels for visual inspection of rolling bodies in the upper roller path and the lower roller path. Through the arrangement of the outer observation opening and the inner observation opening, when the rolling body needs to be inspected, the first plugging block and the second plugging block can be detached, the outer observation opening and the inner observation opening are opened at the moment, and therefore visual angle inspection can be conducted on the rolling body in the upper raceway through the outer observation opening; the rolling bodies in the lower raceway are visually inspected through the inner observation opening, and after the damaged rolling bodies are inspected, targeted disassembly can be carried out, so that the maintenance work is easier, and the overall working efficiency is higher.

Description

TECHNICAL FIELD

[0001] The utility model relates to slewing ring technical field, concretely is a double raceway slewing ring. BACKGROUND

[0002] Slewing ring is a kind of large bearing that can bear comprehensive load, can bear large axial, radial load and overturning moment simultaneously, and slewing ring includes the following types: single row four-point contact ball type slewing ring, double-row different-diameter ball type slewing ring, single-row cross roller type slewing ring, three-row roller type slewing ring;

[0003] Among them, double-row different-diameter ball type slewing ring is also called double raceway slewing ring, and two raceways are arranged on the inner and outer rings, and the internal rolling element of double raceway slewing ring will inevitably appear wear condition in the use process, but when the rolling element needs to be replaced, the upper and lower rows of rolling elements need to be disassembled, and then the rolling element is checked to judge the rolling element to be replaced, and the overall workload is large, so a double raceway slewing ring is provided. UTILITY MODEL CONTENTS

[0004] The utility model aims at: in order to solve the problem in the above background, provide a kind of double raceway slewing ring.

[0005] To achieve the above object, the utility model provides the following technical scheme: a double raceway slewing ring, including the slewing ring of inner ring, outer ring, rolling element, the outer ring is located inner ring outer side, the upper raceway and lower raceway are formed on the outer side of inner ring and the inner side of outer ring, the upper raceway and lower raceway are evenly distributed along vertical direction, the rolling element is installed in the inner side of upper raceway and lower raceway, for realizing the rotary connection of inner ring and outer ring, the outer side of outer ring is provided with the outer observation port that is penetrated with upper raceway, the inner side of inner ring is provided with the inner observation port that is penetrated with lower raceway, the outer observation port, first plugging block are used to provide passageway for the visual inspection of rolling element in the inside of upper raceway and lower raceway;

[0006] The first plugging block and the second plugging block are respectively installed in the outer observation port and the inner observation port, to realize the plugging operation of the outer observation port and the inner observation port.

[0007] As a further scheme of the utility model: the overall trajectory of the outer observation port and the inner observation port is inclined, and the inclined directions of the outer observation port and the inner observation port are opposite, the vertical height of the inner wall of the outer observation port and the inner observation port is less than the diameter of the rolling element, and the horizontal length of the outer observation port and the inner observation port is greater than the diameter of the rolling element.

[0008] As a further improvement of this utility model: two loading and unloading slots are provided on the outer side of the outer ring, which are respectively connected to the upper raceway and the lower raceway. The two loading and unloading slots are misaligned with each other and misaligned with the outer observation port. A third sealing block is installed inside the loading and unloading slot.

[0009] As a further improvement of this utility model: the top of the inner ring and the outer ring are provided with a plurality of annularly distributed flange holes, and two of the flange holes penetrate the outer observation port and the inner observation port. The first sealing block and the second sealing block are formed with through holes aligned with the two flange holes.

[0010] As a further embodiment of this utility model: the top of the inner ring and the outer ring are provided with pin holes at positions corresponding to the outer observation port, the inner observation port, and the loading and unloading slot. The pin holes penetrate the outer observation port, the inner observation port, and the loading and unloading slot to the bottom of the inner ring and the outer ring. The first sealing block, the second sealing block, and the third sealing block are provided with positioning holes that are aligned with the pin holes.

[0011] As a further improvement of this utility model: bolt holes are provided on the outer sides of the first sealing block and the third sealing block and on the inner side of the second sealing block;

[0012] The inner sides of the first and third sealing blocks and the outer side of the second sealing block are respectively formed with arc-shaped rail grooves that match the upper and lower raceways.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] By setting up external and internal observation ports, when it is necessary to inspect the rolling elements, the first and second sealing blocks can be removed. At this time, the external and internal observation ports are opened. Thus, the rolling elements inside the upper raceway can be visually inspected through the external observation port, and the rolling elements inside the lower raceway can be visually inspected through the internal observation port. After the damaged rolling elements are detected, they can be disassembled in a targeted manner. This not only makes the maintenance work easier, but also increases the overall work efficiency. Attached Figure Description

[0015] Fig. 1 This is a schematic diagram of the structure of this utility model;

[0016] Fig. 2 This is a schematic diagram of the structure of this utility model from another perspective;

[0017] Fig. 3 This is a schematic diagram showing the disassembly of the first sealing block of this utility model;

[0018] Fig. 4 This is a schematic diagram showing the disassembly of the second sealing block of this utility model;

[0019] Fig. 5This is a schematic diagram showing the overall structure of this utility model.

[0020] In the diagram: 1. Slewing bearing; 101. Inner ring; 102. Outer ring; 103. Upper raceway; 104. Lower raceway; 105. Rolling element; 106. Flange hole; 107. Pin hole; 2. External observation port; 3. First sealing block; 4. Internal observation port; 5. Second sealing block; 6. Loading / unloading slot; 7. Third sealing block; 8. Bolt hole. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figs. 1-4 In this embodiment of the present invention, a double-raceway slewing bearing includes a slewing bearing 1 composed of an inner ring 101, an outer ring 102, and rolling elements 105. The outer ring 102 is located outside the inner ring 101. An upper raceway 103 and a lower raceway 104 are formed on the outer side of the inner ring 101 and the inner side of the outer ring 102, respectively. The upper raceway 103 and the lower raceway 104 are evenly distributed in the vertical direction. The rolling elements 105 are installed inside the upper raceway 103 and the lower raceway 104 to realize the rotational connection between the inner ring 101 and the outer ring 102. An outer observation port 2 that communicates with the upper raceway 103 is opened on the outer side of the outer ring 102. An inner observation port 4 that communicates with the lower raceway 104 is opened on the inner side of the inner ring 101. The outer observation port 2 and the first sealing block 3 provide a channel for visual inspection of the rolling elements 105 inside the upper raceway 103 and the lower raceway 104.

[0023] The outer observation port 2 and the inner observation port 4 are respectively equipped with a first sealing block 3 and a second sealing block 5, which are used to seal the outer observation port 2 and the inner observation port 4.

[0024] In this embodiment: when it is necessary to inspect the rolling element 105, the first sealing block 3 and the second sealing block 5 can be removed. At this time, the outer observation port 2 and the inner observation port 4 are opened. Thus, the rolling element 105 inside the upper raceway 103 can be visually inspected through the outer observation port 2, and the rolling element 105 inside the lower raceway 104 can be visually inspected through the inner observation port 4.

[0025] After the damaged rolling element 105 is identified, it can be disassembled in a targeted manner, which not only makes the repair work easier but also increases the overall work efficiency.

[0026] It should also be noted that the inner ring 101 and the outer ring 102 are also provided with corresponding oil injection holes and sealant installation grooves. Since this structure is existing technology and is not related to the solution, it has not been described in detail.

[0027] Please refer to this carefully. Figs. 1-4 The overall trajectory of the outer observation port 2 and the inner observation port 4 is inclined, and the inclination directions of the outer observation port 2 and the inner observation port 4 are opposite. The vertical height of the inner wall of the outer observation port 2 and the inner observation port 4 is less than the diameter of the rolling body 105, and the horizontal length of the outer observation port 2 and the inner observation port 4 is greater than the diameter of the rolling body 105.

[0028] In this embodiment, the inclined structure of the outer observation port 2 and the inner observation port 4 makes the length of the outer observation port 2 and the inner observation port 4 longer. This not only allows for the simultaneous observation of multiple rolling bodies 105, but also enables a more comprehensive observation of the rolling bodies 105 from top to bottom, without affecting the normal rolling operation of the rolling bodies 105.

[0029] Please refer to this carefully. Figs. 1-4 Two loading and unloading slots 6 are also provided on the outer side of the outer ring 102, which are respectively connected to the upper raceway 103 and the lower raceway 104. The two loading and unloading slots 6 are misaligned with each other and misaligned with the outer observation port 2. A third sealing block 7 is installed inside the loading and unloading slots 6.

[0030] The top of the inner ring 101 and the outer ring 102 are provided with multiple annular flange holes 106, and two flange holes 106 penetrate the outer observation port 2 and the inner observation port 4. The first sealing block 3 and the second sealing block 5 are formed with through holes that are aligned with the two flange holes 106.

[0031] A pin hole 107 is provided at the top of the inner ring 101 and the outer ring 102, corresponding to the outer observation port 2, the inner observation port 4, and the loading and unloading hole groove 6. The pin hole 107 passes through the outer observation port 2, the inner observation port 4, and the loading and unloading hole groove 6 to the bottom of the inner ring 101 and the outer ring 102. The first sealing block 3, the second sealing block 5, and the third sealing block 7 are provided with positioning holes that are aligned with the pin hole 107.

[0032] Bolt holes 8 are provided on the outer side of the first sealing block 3 and the third sealing block 7 and on the inner side of the second sealing block 5;

[0033] The inner sides of the first sealing block 3 and the third sealing block 7, and the outer side of the second sealing block 5, are respectively formed with arc-shaped rail grooves that match the upper raceway 103 and the lower raceway 104.

[0034] In this embodiment: the loading and unloading slot 6 can be used for the installation and disassembly of the rolling element 105; the first sealing block 3, the second sealing block 5, and the third sealing block 7 can be fixed by the pin passing through the pin hole 107 and the positioning hole; in addition, when the slewing bearing is installed with the equipment, the first sealing block 3 and the second sealing block 5 can be further reinforced by the bolts passing through them.

[0035] For the first sealing block 3, the second sealing block 5, and the third sealing block 7, first remove the pin, and then connect the external screw to the bolt hole 8. The screw is fixed with a protrusion for applying tension or hammering force, so as to facilitate the pulling and removal of the first sealing block 3, the second sealing block 5, and the third sealing block 7, thus achieving disassembly.

[0036] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A double-raceway slewing bearing, comprising a slewing bearing (1) consisting of an inner ring (101), an outer ring (102), and rolling elements (105), wherein the outer ring (102) is located outside the inner ring (101), and an upper raceway (103) and a lower raceway (104) are formed on the outer side of the inner ring (101) and the inner side of the outer ring (102), the upper raceway (103) and the lower raceway (104) being evenly distributed in the vertical direction, and the rolling elements (105) being mounted inside the upper raceway (103) and the lower raceway (104) for realizing the rotational connection between the inner ring (101) and the outer ring (102), characterized in that, The outer ring (102) has an outer observation port (2) that communicates with the upper raceway (103) on its outer side, and the inner ring (101) has an inner observation port (4) that communicates with the lower raceway (104) on its inner side. The outer observation port (2) and the first sealing block (3) provide a channel for visual inspection of the rolling elements (105) inside the upper raceway (103) and the lower raceway (104). The outer observation port (2) and the inner observation port (4) are respectively equipped with a first sealing block (3) and a second sealing block (5) to realize the sealing operation of the outer observation port (2) and the inner observation port (4).

2. The double-raceway slewing bearing according to claim 1, characterized in that, The overall trajectory of the outer observation port (2) and the inner observation port (4) is inclined, and the inclination directions of the outer observation port (2) and the inner observation port (4) are opposite. The vertical height of the inner wall of the outer observation port (2) and the inner observation port (4) is less than the diameter of the rolling body (105), and the horizontal length of the outer observation port (2) and the inner observation port (4) is greater than the diameter of the rolling body (105).

3. The double-raceway slewing bearing according to claim 1, characterized in that, The outer ring (102) also has two loading and unloading slots (6) that are respectively connected to the upper raceway (103) and the lower raceway (104). The two loading and unloading slots (6) are misaligned with each other and misaligned with the outer observation port (2). A third sealing block (7) is installed inside the loading and unloading slots (6).

4. A double-raceway slewing bearing according to claim 1, characterized in that, The inner ring (101) and outer ring (102) are provided with a plurality of annularly distributed flange holes (106) at their tops, and two of the flange holes (106) penetrate the outer observation port (2) and the inner observation port (4). The first sealing block (3) and the second sealing block (5) are formed with through holes aligned with the two flange holes (106).

5. A double-raceway slewing bearing according to claim 1, characterized in that, The top of the inner ring (101) and the outer ring (102) are provided with pin holes (107) at positions corresponding to the outer observation port (2), the inner observation port (4), and the loading and unloading slot (6). The pin holes (107) penetrate the outer observation port (2), the inner observation port (4), and the loading and unloading slot (6) to the bottom of the inner ring (101) and the outer ring (102). The first sealing block (3), the second sealing block (5), and the third sealing block (7) are provided with positioning holes that are aligned with the pin holes (107).

6. A double-raceway slewing bearing according to claim 1, characterized in that, Bolt holes (8) are provided on the outer side of the first sealing block (3) and the third sealing block (7) and on the inner side of the second sealing block (5). The inner sides of the first sealing block (3) and the third sealing block (7) and the outer side of the second sealing block (5) are respectively formed with arc-shaped rail grooves that match the upper raceway (103) and the lower raceway (104).

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