Slewing bearing with positioning structure

Abstract

The utility model belongs to the technical field of pivotal bearings, and particularly relates to a pivotal bearing with a positioning structure, which comprises an inner ring, the outer wall of the inner ring is sleeved with an outer ring through a rolling component, and two first notches are symmetrically arranged on the surface of the inner ring close to the outer wall. The first notches and the second notches in the inner ring and the outer ring are rotated to be aligned, then the clamping tongues in the first notches are pulled outwards, and finally one ends of the clamping tongues move into the second notches. At the moment, the two movable plates on the clamping tongue are sequentially adjusted, and the movable plates are made to shield one side of the extrusion column through threaded structures between the movable plates and the clamping tongue. Therefore, the clamping tongue can be fixed in the first notch and the second notch, the inner ring and the outer ring can be kept in a relatively static and aligned state, at the moment, when a maintainer conducts rotation inspection on the detached pivotal bearing, the inner ring and the outer ring can pass through eyes, and the overall inspection efficiency can be improved through the positioning structure.

Description

Technical Field

[0001] This utility model belongs to the field of rotary bearing technology, specifically relating to rotary bearings with positioning structures. Background Technology

[0002] In industrial production, slewing bearings are widely used as key components in many large mechanical equipment, such as port cranes and the slewing mechanisms of wind power generation equipment. Due to long-term operation under high loads, the inner and outer ring surfaces of slewing bearings are prone to scratches. These scratches not only affect the normal operating accuracy of the slewing bearing, but may also lead to increased equipment vibration and noise, and in severe cases, even equipment failure and production interruption.

[0003] When a slewing bearing is disassembled for repair and inspection due to a problem, traditional operating methods have significant drawbacks. Currently, operators typically place the slewing bearing on a turntable and manually rotate the inner or outer ring, passing the surface area of ​​the bearing sequentially in front of them to look for scratches and other defects. In practice, because scratches may be randomly distributed anywhere on the inner or outer ring of the slewing bearing, to ensure a comprehensive inspection, the operator needs to perform at least two rotation checks: one clockwise and one counterclockwise. This process makes the overall inspection quite time-consuming. Utility Model Content

[0004] The purpose of this invention is to provide a slewing bearing with a positioning structure, aiming to solve the significant drawbacks of traditional operating methods when slewing bearings are disassembled for repair and inspection due to problems. Currently, operators typically place the slewing bearing on a turntable and manually rotate the inner or outer ring, passing the surface area of ​​the bearing sequentially in front of their eyes to look for scratches and other defects. In actual operation, since scratches may be randomly distributed at any location on the inner or outer ring of the slewing bearing, to ensure a comprehensive inspection, the operator needs to perform at least two rotation checks on the slewing bearing: one clockwise and one counterclockwise. This operation makes the overall inspection quite time-consuming.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a rotary bearing with a positioning structure, including an inner ring, the outer wall of the inner ring being sleeved with the outer ring through a rolling component, two first recesses being symmetrically formed on the surface of the inner ring near the outer wall, and two second recesses being symmetrically formed on the surface of the outer ring near the inner wall.

[0006] A cover plate is welded into the opening on one side surface of the first recess. A latch is movably connected to the bottom of the cover plate. One end of the latch is inserted into the inside of the second recess. The latch is located in the first and second recesses and functions to position the inner and outer rings.

[0007] In order to ensure that the latch can be stably retracted into the first recess when not in use, so as not to interfere with the normal use of the inner and outer rings, as a rotary bearing with a positioning structure of this utility model, preferably, a stop block is fixedly installed on the inner wall of each of the two sides near the transverse opening of each first recess, and the outer wall of the opposite side of the two stop blocks is in contact with the outer wall of the latch.

[0008] A linkage block is welded to each of the two outer walls of the latch located inside the first recess. A spring is welded to one end of the latch located inside the first recess, and the other end of the spring is welded to the inner wall of the first recess.

[0009] Two movable plates are symmetrically installed at one end of the latch located inside the second recess. The movable plates are threaded into the second recess via a threaded post on one side.

[0010] In order to enable the movable plate to be angled during use, and thus to form a shielding structure between the movable plate and the extrusion column to prevent the latch from detaching from the second recess, as a rotary bearing with a positioning structure in this utility model, preferably, the vertical length of the movable plate is less than half of the vertical height of the latch end, and two extrusion columns are respectively bonded to the inner walls on both sides of the second recess near the opening, with one side of each extrusion column pressing against the side wall of the latch.

[0011] When the movable plate is set horizontally, one side of it is pressed and connected to the outer wall of the extrusion column near the inside of the second recess.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] When it is necessary to keep the inner and outer rings in a relatively stationary position, the following operations can be performed:

[0014] Rotate the first and second notches on the inner and outer rings until they are aligned. Then pull the latch in the first notch outwards, eventually moving one end of the latch into the second notch. Next, adjust the two movable plates on the latch in sequence, using the threaded structure between the movable plates and the latch to block one side of the extrusion column. This fixes the latch in the first and second notches, allowing the inner and outer rings to remain relatively stationary and aligned. When maintenance personnel rotate the disassembled slewing bearing for inspection, the inner and outer rings can pass right in front of them, thus improving overall inspection efficiency through this positioning structure. Attached Figure Description

[0015] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0016] Figure 1 is a schematic diagram of the overall assembly structure provided in an embodiment of this application.

[0017] Figure 2 is a schematic diagram of a partial cross-sectional structure of the inner and outer rings provided in an embodiment of this application.

[0018] Figure 3 is a schematic diagram of the structure of the spring under tension according to an embodiment of this application.

[0019] Figure 4 is a schematic diagram of the structure of the movable plate provided in the embodiment of this application when it is horizontally unfolded.

[0020] In the diagram: 1. Inner ring; 2. Outer ring; 3. First notch; 31. Stop block; 4. Second notch; 41. Extrusion column; 5. Cover plate; 6. Tongue; 61. Linking block; 62. Spring; 63. Movable plate. 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 refer to Figures 1-4. The present invention provides the following technical solution: a rotary bearing with a positioning structure, including an inner ring 1, the outer wall of the inner ring 1 being sleeved with an outer ring 2 through a rolling component, two first recesses 3 being symmetrically opened on the surface of the inner ring 1 near the outer wall, and two second recesses 4 being symmetrically opened on the surface of the outer ring 2 near the inner wall.

[0023] The inner ring 1 and the outer ring 2 form the rotary bearing of this technical solution through the rolling element between them.

[0024] A cover plate 5 is welded into the opening on one side surface of the first recess 3. A latch 6 is movably connected to the bottom of the cover plate 5. One end of the latch 6 is inserted into the inside of the second recess 4. The latch 6 is located in the first recess 3 and the second recess 4 and functions to position the inner ring 1 and the outer ring 2.

[0025] Preferably, a stop block 31 is fixedly installed on the inner walls of each first recess 3 near the transverse opening on both sides, and the outer wall of the opposite side of the two stop blocks 31 is in contact with the outer wall of the latch 6.

[0026] A connecting block 61 is welded to each of the two outer walls inside the first recess 3. A spring 62 is welded to one end of the latch 6 inside the first recess 3, and the other end of the spring 62 is welded to the inner wall of the first recess 3.

[0027] When the latch 6 moves to its maximum stroke inside the first recess 3, the connecting block 61 of the latch 6 will be blocked by the corresponding stop block 31, so that the latch 6 cannot move further, thereby preventing the latch 6 from disengaging from the first recess 3.

[0028] The side of the latch 6 is L-shaped, and the bottom of the cover plate 5 is in contact with the surface of the latch 6 at the intersection. When the latch 6 is fully retracted into the first recess 3, the end of the latch 6 is also fully retracted into the first recess 3, so as not to affect the normal use function of the inner ring 1 and the outer ring 2.

[0029] Two movable plates 63 are symmetrically installed at one end of the latch 6 located inside the second recess 4. The movable plates 63 are threaded into the second recess 4 through a threaded post on one side.

[0030] In actual use, after the latch 6 moves into the second recess 4, the rubber extrusion post 41 on the inner wall of the second recess 4 will cause extrusion, thereby initially fixing the position of the latch 6 inside the second recess 4, which will facilitate the subsequent adjustment of the movable plate 63.

[0031] Preferably, the vertical length of the movable plate 63 is less than half the vertical height of the end of the latch 6, and two extrusion pillars 41 are respectively bonded to the inner walls of the two sides of the second recess 4 near the opening, with one side of each extrusion pillar 41 pressing against the side wall of the latch 6.

[0032] When the movable plate 63 is set horizontally, one side of it is pressed and connected to the outer wall of the extrusion column 41 near the inside of the second recess 4.

[0033] When not in use, the movable plate 63 will remain in a vertical position, and the top of the vertical movable plate 63 will not be higher than the top of the latch 6.

[0034] In practical use, when it is necessary to keep the inner ring 1 and outer ring 2 stably in a relatively static position in an actual working scenario, the following steps can be followed in an orderly manner. First, adjust the first notch 3 on the inner ring 1 and the second notch 4 on the outer ring 2 until they are completely aligned. During this process, the operator needs to pay close attention to the relative position of the two notches to ensure alignment accuracy.

[0035] Next, there is a latch 6 in the first notch 3, which needs to be pulled outward. As the latch 6 moves, one end will eventually move precisely into the second notch 4.

[0036] After the latch 6 is successfully in place, it is equipped with two movable plates 63, which are connected to the latch 6 via a threaded structure. The operator needs to adjust these two movable plates 63 sequentially, rotating them to slowly and accurately align them with the extrusion column 41 using the thread principle, thus effectively creating an extrusion structure. During the adjustment of the movable plates 63, their position and blocking effect must be constantly monitored to ensure optimal fixation.

[0037] After this operation, the latch 6 is firmly fixed in the first recess 3 and the second recess 4. At this time, the inner ring 1 and the outer ring 2 are also stably held in a relatively static and aligned state. For maintenance personnel, this stable state is extremely advantageous, as they can more easily and efficiently observe any defects that may exist in the corresponding areas of the inner ring 1 and the outer ring 2, greatly improving the accuracy and efficiency of maintenance work.

[0038] It is worth noting that the slewing bearing is inspected by disassembly in this technical solution, and the slewing bearing is fixed on a turntable and rotated during the inspection.

[0039] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. Slew bearing with positioning structure, comprising an inner ring (1) whose outer wall is sleeved with an outer ring (2) by means of rolling elements, characterized in that, Two first notches (3) are symmetrically arranged on the surface of the inner ring (1) close to the outer wall, and two second notches (4) are symmetrically arranged on the surface of the outer ring (2) close to the inner wall; A cover plate (5) is welded on one side surface of the first notch (3), the bottom of the cover plate (5) is movably connected with a clamping tongue (6), one end of the clamping tongue (6) is inserted into the second notch (4), and the clamping tongue (6) is positioned between the first notch (3) and the second notch (4) to position the inner ring (1) and the outer ring (2).

2. The slew bearing with positioning structure according to claim 1, characterized in that: Two stop blocks (31) are respectively fixedly installed on the inner walls of the two sides of the first notch (3) close to the horizontal opening, and the outer walls of the two stop blocks (31) are movably connected with the outer wall of the clamping tongue (6).

3. The slew bearing with positioning structure according to claim 1, characterized in that: Two linkage blocks (61) are respectively welded on the outer walls of the two sides of the clamping tongue (6) in the first notch (3), one end of the clamping tongue (6) in the first notch (3) is welded with a spring (62), and the other end of the spring (62) is welded on the inner wall of the first notch (3).

4. The slew bearing with positioning structure according to claim 1, characterized in that: Two movable plates (63) are symmetrically installed on one end of the clamping tongue (6) in the second notch (4), and the movable plates (63) are threadedly connected in the second notch (4) through the threaded columns on one side of the movable plates (63).

5. The slew bearing with positioning structure according to claim 4, characterized in that: The vertical length of the movable plate (63) is less than one half of the vertical height of the end of the clamping tongue (6).

6. The slew bearing with positioning structure according to claim 1, characterized in that: Two extrusion columns (41) are respectively adhered on the inner walls of the two sides of the second notch (4) close to the opening, and one side of each extrusion column (41) is extruded on the side wall of the clamping tongue (6).

7. The slew bearing with positioning structure according to claim 4, characterized in that: When the movable plate (63) is horizontally arranged, one side of the movable plate (63) is extruded and connected with the outer wall of the extrusion column (41) close to the inner side of the second notch (4).

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