Slewing bearing with outer teeth easy to replace

Abstract

The utility model discloses a slewing bearing with easily replaced external teeth, which relates to the technical field of slewing bearings, and comprises a slewing bearing main body consisting of an inner ring and an outer ring, the outer ring is rotatably connected to the outer side of the inner ring through a rolling body, an L-shaped annular clamping groove is formed in the outer side of the top of the outer ring, a spiral T-shaped rail groove is formed in the outer side of the inner ring, and the spiral T-shaped rail groove is connected to the outer side of the outer ring. The top of the spiral T-shaped rail groove penetrates to the bottom of the L-shaped annular clamping groove, the outer ring is provided with an outer tooth assembly through the L-shaped annular clamping groove and the spiral T-shaped rail groove, and the combined outer tooth assembly is convenient to independently disassemble and assemble. By arranging the combined type outer tooth assembly, independent replacement of the fan-shaped outer teeth can be achieved, and compared with a traditional operation mode that a rolling body between an inner ring and an outer ring needs to be detached, efficiency is better, operation is easier, and meanwhile the effect of saving materials is achieved.

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] A slewing bearing is a large bearing that can withstand comprehensive loads and can simultaneously withstand large axial, radial loads and overturning moments. It consists of inner and outer rings, rolling elements, etc.

[0003] The slewing bearing includes an external-tooth slewing bearing, in which the outer ring of the bearing is formed with external teeth. The rotating end of the motor drives the outer ring of the bearing to rotate by meshing the gears with the outer teeth. During long-term operation, the outer teeth on the outer ring of the bearing will wear out, so it needs to be replaced regularly. When replacing the outer teeth of the existing external-tooth slewing bearing, the outer teeth and the outer ring need to be replaced together. During the replacement operation, the rolling elements between the inner and outer rings need to be removed before the outer ring can be replaced. After replacing the new outer ring, the rolling elements need to be installed again. Not only is the workload large and the replacement efficiency low, but the replacement of the outer ring as a whole also wastes resources. Based on this, a slewing bearing with easy-to-replace outer teeth is provided. Utility Model Content

[0004] The purpose of the present utility model is to provide a slewing bearing with easily replaceable external teeth in order to solve the above-mentioned problems.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solution: a slewing bearing with easily replaceable external teeth, comprising a slewing bearing body consisting of an inner ring and an outer ring, the outer ring being rotatably connected to the outer side of the inner ring via rolling elements, an L-shaped annular groove being formed on the top outer side of the outer ring, a spiral T-shaped rail groove being formed on the outer side of the inner ring, the top of the spiral T-shaped rail groove extending through the bottom of the L-shaped annular groove, an external tooth assembly being mounted on the outer ring via the L-shaped annular groove and the spiral T-shaped rail groove, the assembled external tooth assembly being convenient for independent assembly and disassembly;

[0006] The external gear assembly includes fan-shaped external teeth, a spiral T-shaped clamping block, and an arc-shaped limiting clamping plate;

[0007] The spiral T-shaped clamping block is fixed on the inner side of the sector-shaped outer teeth, and the sector-shaped outer teeth and the outer ring are connected by the spiral T-shaped clamping block being clamped on the inner side of the spiral T-shaped rail groove;

[0008] The arc-shaped limiting card plate is clamped on the inner side of the L-shaped annular card groove and fits on the upper surface of the fan-shaped outer teeth and the spiral T-shaped card block, and is used to limit the upward movement of the fan-shaped outer teeth and the spiral T-shaped card block, thereby realizing the vertical limitation of the fan-shaped outer teeth and the outer ring.

[0009] As a further solution of the present invention: there are multiple spiral T-shaped rail grooves, and the multiple spiral T-shaped rail grooves are evenly distributed along the circumferential direction. There are multiple and the same number of fan-shaped external teeth and arc-shaped limit clamps. A plurality of spiral T-shaped blocks are fixedly connected to the inner side of a single fan-shaped external tooth. The total number of the spiral T-shaped blocks matches the number of spiral T-shaped rail grooves and the positions correspond one to one.

[0010] As a further solution of the present invention: the top end of the arc-shaped limiting clamp is provided with a fixing hole that penetrates to the bottom of the arc-shaped limiting clamp, and the bottom of the inner wall of the L-shaped annular groove is provided with a threaded hole. The threaded holes and the spiral T-shaped rail groove are staggered along the circumferential direction, and the number and position of the fixing holes correspond one to one with the number and position of the threaded holes.

[0011] As a further solution of the present invention: the joint surface of the plurality of sector-shaped external teeth is a spiral surface, and the spiral angle of the spiral surface matches the spiral angle of the spiral T-shaped rail groove.

[0012] As a further solution of the present invention: the inner diameter of the arc-shaped limit clamping plate matches the inner diameter of the L-shaped annular clamping groove, and the inner diameter of the sector-shaped external teeth matches the outer diameter of the outer ring;

[0013] The outer diameter of the arc-shaped limiting clamping plate is larger than the inner diameter of the sector-shaped outer teeth and smaller than the inner diameter of the tooth groove of the sector-shaped outer teeth. The thickness of the arc-shaped limiting clamping plate matches the height of the horizontal notch portion of the L-shaped annular clamping groove.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] By setting up a combined external tooth assembly, the sector-shaped external teeth can be replaced individually. Compared with the traditional operation method that requires disassembly of the rolling elements between the inner and outer rings, not only is the replacement efficiency faster and the operation easier, but it also saves materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural diagram of the utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the present invention;

[0018] Figure 3 This is a schematic diagram of the connection between the sector-shaped external teeth and the spiral T-shaped clamping block of the present invention;

[0019] Figure 4 This is a structural sectional view of the outer ring of the utility model.

[0020] In the figure: 1. Slewing bearing body; 101. Inner ring; 102. Outer ring; 103. L-shaped annular groove; 104. Spiral T-shaped rail groove; 105. Threaded hole; 2. External gear assembly; 201. Fan-shaped external gear; 202. Spiral T-shaped clamping block; 203. Arc-shaped limit clamping plate; 204. Fixing hole. DETAILED DESCRIPTION

[0021] The following will be combined with the accompanying 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.

[0022] See also Figures 1 to 4 In an embodiment of the present invention, a slewing bearing with easily replaceable external teeth includes a slewing bearing body 1 consisting of an inner ring 101 and an outer ring 102. The outer ring 102 is rotatably connected to the outer side of the inner ring 101 through rolling elements. An L-shaped annular groove 103 is provided on the top outer side of the outer ring 102. A spiral T-shaped rail groove 104 is provided on the outer side of the inner ring 101. The top of the spiral T-shaped rail groove 104 extends through the bottom of the L-shaped annular groove 103. The outer ring 102 is mounted with an external tooth assembly 2 through the L-shaped annular groove 103 and the spiral T-shaped rail groove 104. The assembled external tooth assembly 2 is convenient for independent disassembly and assembly.

[0023] The external tooth assembly 2 includes a sector-shaped external tooth 201, a spiral T-shaped clamping block 202, and an arc-shaped limiting clamping plate 203;

[0024] The spiral T-shaped clamping block 202 is fixed to the inner side of the sector-shaped outer teeth 201, and the sector-shaped outer teeth 201 are connected to the outer ring 102 by clamping the spiral T-shaped clamping block 202 to the inner side of the spiral T-shaped rail groove 104;

[0025] The arc-shaped limiting clamping plate 203 is clamped to the inner side of the L-shaped annular clamping groove 103 and fits on the upper surface of the sector-shaped outer teeth 201 and the spiral T-shaped clamping block 202, and is used to limit the upward movement of the sector-shaped outer teeth 201 and the spiral T-shaped clamping block 202, thereby realizing the vertical limitation of the sector-shaped outer teeth 201 and the outer ring 102;

[0026] A fixing hole 204 is formed at the top end of the arc-shaped limit plate 203 and extends to the bottom of the arc-shaped limit plate 203. Threaded holes 105 are formed at the bottom of the inner wall of the L-shaped annular groove 103. The threaded holes 105 are staggered with the spiral T-shaped rail groove 104 along the circumferential direction, and the number and position of the fixing holes 204 correspond to the number and position of the threaded holes 105.

[0027] The inner diameter of the arc-shaped limiting clamping plate 203 matches the inner diameter of the L-shaped annular clamping groove 103, and the inner diameter of the sector-shaped external teeth 201 matches the outer diameter of the outer ring 102;

[0028] The outer diameter of the arc-shaped limiting clamping plate 203 is larger than the inner diameter of the sector-shaped outer teeth 201 and smaller than the inner diameter of the tooth groove of the sector-shaped outer teeth 201 . The thickness of the arc-shaped limiting clamping plate 203 matches the height of the horizontal notch portion of the L-shaped annular clamping groove 103 .

[0029] In this embodiment, when the slewing bearing is in use, multiple sector-shaped external teeth 201 are spliced ​​together to form an annular gear ring, which can be used to drive with an external motor. When the sector-shaped external teeth 201 are severely worn and need to be replaced, the operation steps are as follows:

[0030] The bolts fastening the arc-shaped limiting clamping plate 203 can be removed, and then the arc-shaped limiting clamping plate 203 can be horizontally pulled out from the L-shaped annular clamping groove 103 (it should be noted that the vertical section of the L-shaped annular clamping groove 103 is "L"-shaped). At this time, the restriction of the sector-shaped external teeth 201 and the spiral T-shaped clamping block 202 is released, and then the sector-shaped external teeth 201 can be removed, and then the new sector-shaped external teeth 201 can be replaced and the arc-shaped limiting clamping plate 203 can be installed;

[0031] During the above operation, if the rotating device installed on the outer ring 102 does not block the upward movement of the sector-shaped external teeth 201, there is no need to remove the rotating device on the outer ring 102, and the sector-shaped external teeth 201 can be directly replaced. In addition, single or multiple sector-shaped external teeth 201 can be selectively replaced according to the degree of wear of the sector-shaped external teeth 201;

[0032] The cooperation of the above multiple parts can realize the individual replacement of the sector-shaped outer teeth 201. Compared with the traditional operation method that requires disassembly of the rolling element between the inner ring 101 and the outer ring 102, not only the replacement efficiency is faster and the operation is easier, but also the material saving effect is achieved.

[0033] Please refer to Figures 1 to 4 , the number of spiral T-shaped rail grooves 104 is set to be multiple, and the multiple spiral T-shaped rail grooves 104 are evenly distributed along the circumferential direction. The number of sector-shaped external teeth 201 and the arc-shaped limit clamping plates 203 are set to be multiple and the number is the same. The inner side of a single sector-shaped external tooth 201 is fixedly connected to a plurality of spiral T-shaped clamping blocks 202. The total number of spiral T-shaped clamping blocks 202 matches the number of spiral T-shaped rail grooves 104 and the positions correspond one to one.

[0034] The joint surface of the plurality of sector-shaped external teeth 201 is a helical surface, and the helical angle of the helical surface matches the helical angle of the spiral T-shaped rail groove 104 .

[0035] In this embodiment, the spiral T-shaped rail groove 104 and the spiral T-shaped clamping block 202 are arranged to increase the length of the connection surface between the spiral T-shaped clamping block 202 and the sector-shaped external tooth 201, so that the sector-shaped external tooth 201 and the spiral T-shaped clamping block 202 have a greater connection force. In addition, a single sector-shaped external tooth 201 is connected to multiple spiral T-shaped clamping blocks 202, which ensures the stable installation of the sector-shaped external tooth 201 and avoids the fracture of the connection between the sector-shaped external tooth 201 and the spiral T-shaped clamping block 202.

[0036] The helical surface of the sector-shaped external teeth 201 is mainly used to adapt to the installation angle of the sector-shaped external teeth 201 .

[0037] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A slewing bearing with easily replaceable outer teeth, comprising a slewing bearing body (1) consisting of an inner ring (101) and an outer ring (102), wherein the outer ring (102) is rotatably connected to the outer side of the inner ring (101) via rolling elements, and characterized in that: An L-shaped annular groove (103) is provided on the outer side of the top of the outer ring (102), and a spiral T-shaped rail groove (104) is provided on the outer side of the inner ring (101). The top of the spiral T-shaped rail groove (104) extends through the bottom of the L-shaped annular groove (103). The outer ring (102) is equipped with an external tooth assembly (2) through the L-shaped annular groove (103) and the spiral T-shaped rail groove (104). The assembled external tooth assembly (2) is convenient for independent disassembly and assembly. The external tooth assembly (2) comprises sector-shaped external teeth (201), a spiral T-shaped clamping block (202), and an arc-shaped limiting clamping plate (203); The spiral T-shaped clamping block (202) is fixed to the inner side of the sector-shaped outer teeth (201), and the sector-shaped outer teeth (201) and the outer ring (102) are connected by the spiral T-shaped clamping block (202) being clamped to the inner side of the spiral T-shaped rail groove (104); The arc-shaped limiting clamping plate (203) is clamped on the inner side of the L-shaped annular clamping groove (103) and fits on the upper surface of the sector-shaped outer teeth (201) and the spiral T-shaped clamping block (202), and is used to limit the upward movement of the sector-shaped outer teeth (201) and the spiral T-shaped clamping block (202), thereby realizing the vertical direction limitation of the sector-shaped outer teeth (201) and the outer ring (102).

2. A slewing bearing with easily replaceable external teeth according to claim 1, characterized in that: The number of the spiral T-shaped rail grooves (104) is multiple, and the multiple spiral T-shaped rail grooves (104) are evenly distributed along the circumferential direction. The number of the sector-shaped external teeth (201) and the arc-shaped limiting clamping plates (203) is multiple and the number is the same. The inner side of a single sector-shaped external tooth (201) is fixedly connected to a plurality of spiral T-shaped clamping blocks (202), and the total number of the spiral T-shaped clamping blocks (202) matches the number of the spiral T-shaped rail grooves (104) and the positions correspond one to one.

3. The slewing bearing with easily replaceable external teeth according to claim 1, characterized in that: The top end of the arc-shaped limiting clamping plate (203) is provided with a fixing hole (204) extending through the bottom of the arc-shaped limiting clamping plate (203), and the bottom of the inner wall of the L-shaped annular clamping groove (103) is provided with a threaded hole (105), the threaded hole (105) and the spiral T-shaped rail groove (104) are staggered along the circumferential direction, and the number and position of the fixing holes (204) correspond to the number and position of the threaded holes (105).

4. The slewing bearing with easily replaceable external teeth according to claim 2, characterized in that: The splicing surface of the plurality of sector-shaped external teeth (201) is a spiral surface, and the spiral angle of the spiral surface matches the spiral angle of the spiral T-shaped rail groove (104).

5. The slewing bearing with easily replaceable external teeth according to claim 1, characterized in that: The inner diameter of the arc-shaped limiting clamping plate (203) matches the inner diameter of the L-shaped annular clamping groove (103), and the inner diameter of the sector-shaped outer teeth (201) matches the outer diameter of the outer ring (102); The outer diameter of the arc-shaped limiting clamping plate (203) is larger than the inner diameter of the sector-shaped outer teeth (201) and smaller than the inner diameter of the tooth groove of the sector-shaped outer teeth (201), and the thickness of the arc-shaped limiting clamping plate (203) matches the height of the horizontal notch portion of the L-shaped annular clamping groove (103).

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