Slewing bearing with outer teeth easy to replace

Abstract

The utility model discloses a slewing bearing with outer teeth easy to replace, and belongs to the technical field of slewing bearings. A slewing bearing with outer teeth easy to replace comprises an upper slewing bearing body and a lower slewing bearing body, outer tooth fixing plates are installed between the upper slewing bearing body and the lower slewing bearing body, outer ring teeth are arranged on the outer portions of the six outer tooth fixing plates, and six limiting clamping blocks are arranged at the upper end of the lower slewing bearing body. The slewing bearing solves the problems that in the actual use process of an existing slewing bearing, part of damaged outer teeth are inconvenient to replace, the slewing bearing is limited by the structure, and the maintenance efficiency is affected, the outer tooth fixing plate at the position of the damaged outer ring teeth is pulled out, and therefore the outer tooth fixing plate can be separated from the limiting clamping block, and the maintenance efficiency is improved. The upper-layer slewing bearing and the lower-layer slewing bearing are separated, disassembly and replacement are fast, the requirement for overall replacement of the gear ring is reduced, cost is saved, and long-term use is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of slewing bearings, in particular to a slewing bearing with easily replaceable external teeth. Background Art

[0002] Slewing bearings are widely used in real industry and are known as the joints of machines. They are important transmission components required for machines that need to make relative rotational motion between two objects and simultaneously withstand axial force, radial force, and tilting torque. When teeth need to be replaced, it is usually necessary to remove the entire outer ring or inner ring of the bearing and replace it with a new one, which results in high maintenance costs and low maintenance efficiency.

[0003] Chinese patent publication number CN221033618U discloses a slewing bearing with easily replaceable outer teeth, comprising: a supporting outer ring, the top annular array of which is provided with mounting holes; the patent adopts a detachable outer ring tooth design, and when the outer ring teeth age, only the outer ring teeth that need to be replaced need to be pulled out separately, which speeds up maintenance and reduces maintenance costs.

[0004] In actual use, the slewing bearing of the above patent is not convenient to replace partially damaged external teeth, which is limited by the structure and affects maintenance efficiency. Therefore, it does not meet existing needs. In this regard, we propose a slewing bearing with easy replacement of external teeth. Utility Model Content

[0005] The purpose of the present invention is to provide a slewing bearing with easy-to-replace outer teeth, which solves the problem in the above-mentioned background technology that the slewing bearing is inconvenient to replace partially damaged outer teeth during actual use and is limited by the structure, which affects the maintenance efficiency.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a slewing bearing with easily replaceable external teeth, comprising an upper slewing bearing and a lower slewing bearing, wherein the lower slewing bearing is installed below the upper slewing bearing, and an external tooth fixing plate is installed between the upper and lower slewing bearings, wherein six external tooth fixing plates are provided, and outer ring teeth are provided on the outside of the six external tooth fixing plates, and six limit blocks are provided on the upper end of the lower slewing bearing.

[0007] Preferably, the outer portions of the upper slewing bearing and the lower slewing bearing are both provided with an integrally formed outer protective layer, and the outer protective layer is in contact with the outer tooth fixing plate.

[0008] Preferably, an integrally formed inner ring is provided inside the upper slewing bearing, and the inner ring is embedded in the lower slewing bearing and engaged with the lower slewing bearing. The surfaces of the upper and lower slewing bearings are both provided with integrally formed positioning holes.

[0009] Preferably, the upper and lower slewing bearings are each provided with an integrally formed disassembly hole, the outer tooth fixing plate is provided with an integrally formed locking hole, the position of the locking hole corresponds to the position of the disassembly hole, and locking columns are installed inside the disassembly hole and the locking hole.

[0010] Preferably, the upper and lower ends of the locking column are both provided with positioning screws, and a fastening nut is installed on the outside of the positioning screw. The fastening nut is fixedly connected to the positioning screw, and the locking column is fixedly connected to the upper slewing bearing, the external tooth fixing plate and the lower slewing bearing.

[0011] Preferably, an integrally formed mounting groove is provided on one side of the external tooth fixing plate, and the six limit blocks are respectively arranged in the mounting grooves of the six external tooth fixing plates, and pressure springs are provided on both sides of the inner part of the limit block, and anti-slip positioning blocks are installed on both sides of the limit block, and the anti-slip positioning blocks extend to the interior of the limit block and are fixedly connected to the pressure spring, and an integrally formed limit groove is provided on both sides of the outer part of the external tooth fixing plate, and the anti-slip positioning blocks are embedded in the interior of the limit groove and engage with the limit groove.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] 1. When the slewing bearing of the present invention needs to perform maintenance and repair on part of the outer ring gear, the locking column at the corresponding position is removed. After the locking column is removed, the outer gear fixing plate at the position of the damaged outer ring gear is pulled out, so that the outer gear fixing plate can be separated from the limit block and separated from between the upper slewing bearing and the lower slewing bearing, so that it can be quickly disassembled and replaced, reducing the need to replace the entire gear ring, saving costs, and facilitating long-term use.

[0014] 2. The limit block of the utility model is provided with anti-slip positioning blocks on both sides to quickly position the two sides of the outer tooth fixing plate, which is convenient for the installation of the six outer tooth fixing plates. The limit block is conveniently protected by the limit groove, which improves the installation effect. The inner ring of the upper slewing bearing is embedded in the interior of the lower slewing bearing, making the connection effect between the lower slewing bearing and the upper slewing bearing more stable, which is conducive to long-term work. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is an axonometric view of the present invention from above;

[0016] Figure 2 This is an axonometric drawing of the present invention after disassembly from the front;

[0017] Figure 3 This is an axonometric drawing of the present invention after disassembly and viewed from above;

[0018] Figure 4 This is an axonometric view of the side view of the external tooth fixing plate of the utility model.

[0019] In the figure: 1. Upper slewing bearing; 101. Outer protective layer; 102. Inner ring; 103. Positioning hole; 104. Disassembly hole; 2. Lower slewing bearing; 201. Limit block; 202. Anti-slip positioning block; 3. Locking column; 301. Fastening nut; 302. Positioning screw; 4. External tooth fixing plate; 401. Outer ring teeth; 402. Locking hole; 403. Limit slot; 404. Installation slot. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] In order to solve the problem that the damaged outer teeth of the existing slewing bearing are inconvenient to replace during actual use, and the maintenance efficiency is affected by the structural limitations, please refer to Figure 1 - Figure 4 , this embodiment provides the following technical solutions:

[0022] A slewing bearing with easily replaceable external teeth comprises an upper slewing bearing 1 and a lower slewing bearing 2. The lower slewing bearing 2 is installed below the upper slewing bearing 1. An external tooth fixing plate 4 is installed between the upper slewing bearing 1 and the lower slewing bearing 2. Six external tooth fixing plates 4 are provided. The outsides of the six external tooth fixing plates 4 are all provided with outer ring teeth 401. Six limiting blocks 201 are provided at the upper end of the lower slewing bearing 2. The external tooth fixing plate 4 is separated from the limiting blocks 201 and from between the upper slewing bearing 1 and the lower slewing bearing 2 for quick disassembly and replacement, thereby reducing the need for replacing the gear ring as a whole, saving costs, and being conducive to long-term use.

[0023] An integrally formed disassembly hole 104 is provided inside the upper slewing bearing 1 and the lower slewing bearing 2, and an integrally formed locking hole 402 is provided inside the outer tooth fixing plate 4. The position of the locking hole 402 corresponds to the position of the disassembly hole 104. Locking columns 3 are installed inside the disassembly hole 104 and the locking holes 402. When maintenance and repair of part of the outer ring teeth 401 is required, the locking columns 3 at the corresponding positions are removed. After the locking columns 3 are removed, the outer tooth fixing plate 4 at the position of the damaged outer ring teeth 401 is pulled out, so that the outer tooth fixing plate 4 can be detached from the limit block 201.

[0024] A positioning screw 302 is provided at the upper and lower ends of the locking column 3, and a fastening nut 301 is installed on the outside of the positioning screw 302. The fastening nut 301 is fixedly connected to the positioning screw 302, and the locking column 3 is fixedly connected to the upper slewing bearing 1, the external tooth fixing plate 4 and the lower slewing bearing 2. By removing the fastening nut 301, the locking column 3 can be removed from the upper slewing bearing 1 and the lower slewing bearing 2 for subsequent maintenance and repair work.

[0025] Specifically, when maintenance and inspection of part of the outer ring gear 401 is required, the locking column 3 at the corresponding position can be removed, and the fastening nut 301 can be removed to remove the locking column 3 from the upper slewing bearing 1 and the lower slewing bearing 2 for subsequent maintenance and inspection work. After the locking column 3 is removed, the outer tooth fixing plate 4 at the position of the damaged outer ring gear 401 can be pulled out, so that the outer tooth fixing plate 4 can be separated from the limit block 201 and separated from between the upper slewing bearing 1 and the lower slewing bearing 2, so that it can be quickly disassembled and replaced, reducing the need to replace the entire gear ring, saving costs, and facilitating long-term use.

[0026] In order to solve the problem that the existing slewing bearing has general structural position stability during actual use, which is not conducive to long-term operation, please refer to Figure 1 - Figure 4 , this embodiment provides the following technical solutions:

[0027] The outer parts of the upper slewing bearing 1 and the lower slewing bearing 2 are both provided with an integrally formed outer protective layer 101, which is in contact with the outer tooth fixing plate 4. The outer protective layer 101 extends the contact area between the outer tooth fixing plate 4 and the slewing bearing, which is beneficial to improving the position stability.

[0028] An integrally formed inner ring 102 is provided inside the upper slewing bearing 1. The inner ring 102 is embedded in the interior of the lower slewing bearing 2 and engages with the lower slewing bearing 2. Integrally formed positioning holes 103 are provided on the surfaces of the upper slewing bearing 1 and the lower slewing bearing 2. The inner ring 102 used in the upper slewing bearing 1 is embedded in the interior of the lower slewing bearing 2, making the connection between the lower slewing bearing 2 and the upper slewing bearing 1 more stable and conducive to long-term operation.

[0029] One side of the outer tooth fixing plate 4 is provided with an integrally formed installation groove 404, and the six limit blocks 201 are respectively arranged in the installation grooves 404 of the six outer tooth fixing plates 4, and pressure springs are provided on both sides of the inner part of the limit block 201, and anti-slip positioning blocks 202 are installed on both sides of the limit block 201. The anti-slip positioning blocks 202 extend to the interior of the limit block 201 and are fixedly connected to the pressure spring. Both sides of the outer side of the outer tooth fixing plate 4 are provided with an integrally formed limit groove 403, and the anti-slip positioning blocks 202 are embedded in the interior of the limit groove 403 and engage with the limit groove 403. The limit block 201 is quickly positioned on both sides of the outer tooth fixing plate 4 by setting the anti-slip positioning blocks 202 on both sides, which facilitates the installation of the six outer tooth fixing plates 4, and the limit groove 403 is used to conveniently protect the limit block 201, thereby improving the installation effect.

[0030] Specifically, the limit block 201 quickly positions both sides of the outer tooth fixing plate 4 by setting the anti-slip positioning blocks 202 on both sides, which facilitates the installation of the six outer tooth fixing plates 4, and the limit groove 403 is used to conveniently protect the limit block 201, thereby improving the installation effect. The outer protective layer 101 extends the contact area between the outer tooth fixing plate 4 and the slewing bearing, which is beneficial to improving the position stability. The inner ring 102 used in the upper slewing bearing 1 is embedded in the interior of the lower slewing bearing 2, so that the connection effect between the lower slewing bearing 2 and the upper slewing bearing 1 is more stable, which is beneficial to long-term work.

[0031] Working principle: When maintenance and inspection of the outer ring gear 401 is required, the locking column 3 at the corresponding position can be removed, and the fastening nut 301 can be removed to remove the locking column 3 from the upper slewing bearing 1 and the lower slewing bearing 2 for subsequent maintenance and inspection. After the locking column 3 is removed, the outer tooth fixing plate 4 at the position of the damaged outer ring gear 401 can be pulled out, so that the outer tooth fixing plate 4 can be separated from the limit block 201 and separated from between the upper slewing bearing 1 and the lower slewing bearing 2, so that it can be quickly disassembled and replaced, reducing the need to replace the entire gear ring, saving costs, and being conducive to long-term use. During the installation work, the anti-slip positioning blocks 202 on both sides of the limit block 201 are provided to quickly position the two sides of the outer tooth fixing plate 4, which is convenient for the installation of the six outer tooth fixing plates 4, and the limit groove 403 is used to conveniently protect the limit block 201, thereby improving the installation effect. The contact area between the outer tooth fixing plate 4 and the slewing bearing is extended by the outer protective layer 101, which is beneficial to improve the position stability. The inner ring 102 used in the upper slewing bearing 1 is embedded in the interior of the lower slewing bearing 2, so that the connection effect between the lower slewing bearing 2 and the upper slewing bearing 1 is more stable, which is beneficial to long-term work.

[0032] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0033] Although the embodiments of the present invention 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 these embodiments without departing from the principles and spirit of the present invention.

Claims

1. A slewing bearing with easily replaceable external teeth, comprising an upper slewing bearing (1) and a lower slewing bearing (2), characterized in that: The lower slewing bearing (2) is installed below the upper slewing bearing (1), and an external tooth fixing plate (4) is installed between the upper slewing bearing (1) and the lower slewing bearing (2). Six external tooth fixing plates (4) are provided, and the outsides of the six external tooth fixing plates (4) are all provided with outer ring teeth (401). Six limit blocks (201) are provided at the upper end of the lower slewing bearing (2).

2. The slewing bearing with easily replaceable external teeth according to claim 1, characterized in that: The exteriors of the upper slewing bearing (1) and the lower slewing bearing (2) are both provided with an integrally formed outer protective layer (101), and the outer protective layer (101) is in contact with the outer tooth fixing plate (4).

3. The slewing bearing with easily replaceable external teeth according to claim 1, characterized in that: An integrally formed inner ring (102) is provided inside the upper slewing bearing (1), and the inner ring (102) is embedded in the interior of the lower slewing bearing (2) and engaged with the lower slewing bearing (2). The surfaces of the upper slewing bearing (1) and the lower slewing bearing (2) are both provided with integrally formed positioning holes (103).

4. The slewing bearing with easily replaceable external teeth according to claim 1, characterized in that: The upper slewing bearing (1) and the lower slewing bearing (2) are both provided with an integrally formed disassembly hole (104) inside, the outer tooth fixing plate (4) is provided with an integrally formed locking hole (402) inside, the position of the locking hole (402) corresponds to the position of the disassembly hole (104), and locking columns (3) are installed inside the disassembly hole (104) and the locking hole (402).

5. The slewing bearing with easily replaceable external teeth according to claim 4, characterized in that: The upper and lower ends of the locking column (3) are both provided with positioning screws (302), and a fastening nut (301) is installed outside the positioning screw (302). The fastening nut (301) is fixedly connected to the positioning screw (302), and the locking column (3) is fixedly connected to the upper slewing bearing (1), the external tooth fixing plate (4) and the lower slewing bearing (2).

6. The slewing bearing with easily replaceable external teeth according to claim 1, characterized in that: An integrally formed mounting groove (404) is provided on one side of the external tooth fixing plate (4), and the six limiting blocks (201) are respectively provided in the mounting grooves (404) of the six external tooth fixing plates (4). Pressure springs are provided on both sides of the internal portion of the limiting block (201), and anti-slip positioning blocks (202) are installed on both sides of the limiting block (201). The anti-slip positioning blocks (202) extend to the interior of the limiting block (201) and are fixedly connected to the pressure springs. An integrally formed limiting groove (403) is provided on both sides of the external portion of the external tooth fixing plate (4), and the anti-slip positioning blocks (202) are embedded in the interior of the limiting groove (403) and engaged with the limiting groove (403).

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