Torque-adjustable slewing bearing

Abstract

The utility model discloses a rotary bearing with adjustable torque, and relates to the technical field of mechanical bearings. The utility model aims to provide the slewing bearing which is adjustable in rotation torque and convenient to maintain. The slewing bearing with the adjustable torque comprises a bearing main body, a stepped shaft is arranged on the bearing main body, a plurality of second sliding sheets are arranged on a shaft shoulder of the stepped shaft, a flange is arranged above the bearing main body, the flange is in contact with the second sliding sheets, a first sliding sheet is arranged on the flange, and the first sliding sheet is fixedly connected with the second sliding sheets. A cover plate is arranged on the bearing body and makes contact with the first sliding piece. According to the rotary bearing with the adjustable torque, the torque can be adjusted before the rotary bearing is used, so that the rotary bearing is convenient to use and wide in application range; lubricating grease does not need to be coated in the bearing, and later cleaning and maintenance are not needed.

Description

Technical Field

[0001] The utility model relates to the technical field of bearings, in particular to a slewing bearing with adjustable torque. Background Art

[0002] Slewing bearings are also called turntable bearings and slewing bearings. Slewing bearings are widely used in the field of mechanical engineering. They support and rotate by rotating the inner and outer rings of the slewing bearings.

[0003] There are two main problems with existing slewing bearings in actual use. First, the structure of the slewing bearing is fixed. Once it is processed into a finished product, its internal parameters are basically determined and cannot be subsequently adjusted according to work needs, such as torque adjustment. Second, after a period of use, grease needs to be added to the inside of the bearing to keep the internal raceway clean and lubricated, and the subsequent maintenance process is relatively complicated. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a slewing bearing with adjustable rotation torque and convenient maintenance.

[0005] The utility model discloses a torque-adjustable slewing bearing, comprising a bearing main body, a stepped shaft being arranged on the bearing main body, a plurality of second sliding sheets being mounted on the shaft shoulder of the stepped shaft, a flange being mounted above the bearing main body, the flange being in contact with the second sliding sheets, a first sliding sheet being mounted on the flange, the first sliding sheet being fixedly connected with the second sliding sheet, and a cover plate being arranged on the bearing main body, the cover plate being in contact with the first sliding sheet.

[0006] The utility model discloses a torque-adjustable slewing bearing, wherein the second sliding plate comprises a second fan-shaped bottom plate and a second fan-shaped side plate, a plurality of second sliding plates are closely arranged into a circular ring structure and are arranged on the outer side surface of the stepped shaft, the lower side surface of the second fan-shaped bottom plate contacts the upper side surface of the shaft shoulder, and the inner side surface of the second fan-shaped side plate contacts the outer side surface of the stepped shaft.

[0007] The utility model discloses a torque-adjustable slewing bearing, wherein the first sliding sheet and the second sliding sheet have the same structure, and the first sliding sheet comprises a first sector-shaped bottom plate and a first sector-shaped side plate.

[0008] The utility model discloses a torque-adjustable slewing bearing, wherein the inner ring and the lower side surface of the flange are in contact with the outer side surface of the second fan-shaped side plate and the upper side surface of the second fan-shaped bottom plate respectively; the inner ring and the upper side surface of the flange are in contact with the outer side surface of the first fan-shaped side plate and the lower side surface of the first fan-shaped bottom plate respectively; the inner side surface of the first fan-shaped side plate is in contact with the outer side surface of the stepped shaft.

[0009] The utility model discloses a torque-adjustable slewing bearing, wherein a pin is arranged on the side of the stepped shaft, and two limit blocks are arranged on the flange, and the limit blocks are used in coordination with the pin.

[0010] The utility model discloses a torque-adjustable slewing bearing, wherein a positioning hole is arranged on the flange, and the positioning pins arranged on the first sliding sheet and the second sliding sheet pass through the positioning hole for connection.

[0011] The utility model discloses a torque-adjustable slewing bearing, wherein the bottom surface of the bearing body is provided with second connecting ends around the periphery, and the outer side of the flange is provided with first connecting ends around the periphery.

[0012] The torque-adjustable slewing bearing of the utility model is different from the prior art in that the torque-adjustable slewing bearing of the utility model is connected to an external rotating structure through a first connecting end on a flange, and the flange can rotate with the external structure. Before the slewing bearing is used, the material, model and quantity of the first sliding sheet and the second sliding sheet can be adjusted according to the use conditions, so that they can generate suitable friction on both sides of the flange and the bearing body and the cover plate, thereby realizing the adjustment of the slewing torque. During the rotation of the flange, the limit block provided under the flange cooperates with the pin on the bearing body to limit the rotation range of the flange.

[0013] The torque-adjustable slewing bearing of the utility model can adjust the torque before use, is easy to use, and has a wide range of applications; the inside of the bearing does not need to be coated with grease, and does not need to be cleaned and maintained in the later stage.

[0014] The torque-adjustable slewing bearing of the present invention will be further described below in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the torque-adjustable slewing bearing of the utility model;

[0016] Figure 2 This is a schematic diagram of the structure of the torque-adjustable slewing bearing of the utility model without the flange;

[0017] Figure 3 It is an exploded view of the torque-adjustable slewing bearing of the utility model;

[0018] Figure 4 It is a schematic structural diagram of the second sliding sheet in the torque-adjustable slewing bearing of the utility model;

[0019] The markings in the figure are as follows: 1-bearing body; 2-second connecting end; 3-cover plate; 4-flange; 5-first connecting end; 6-second sliding piece; 61-second fan-shaped side plate; 62-second fan-shaped bottom plate; 7-first sliding piece; 8-limiting block; 9-pin shaft. DETAILED DESCRIPTION

[0020] The following embodiments are used to illustrate the present invention but are not intended to limit the scope of the present invention.

[0021] Example

[0022] like Figure 1-Figure 3 As shown, the torque-adjustable slewing bearing of the utility model comprises a bearing body 1, and a second connecting end 2 is arranged around the bottom surface of the bearing body 1, and the second connecting end 2 is used to connect to an external fixing structure.

[0023] The bearing body 1 is provided with a stepped shaft, and a plurality of threaded holes are evenly arranged on the top end surface of the stepped shaft, and the threaded holes are used to install the cover plate 3. A plurality of second sliding sheets 6 are installed on the shaft shoulder of the stepped shaft.

[0024] like Figure 4 As shown, the second sliding sheet 6 includes a second fan-shaped bottom plate 62 and a second fan-shaped side plate 61. A plurality of second sliding sheets 6 are closely arranged in a circular ring structure and placed on the outer side of the stepped shaft, wherein the lower side of the second fan-shaped bottom plate 62 of the second sliding sheet 6 contacts the upper side of the shaft shoulder, and the inner side of the second fan-shaped side plate 61 contacts the outer side of the stepped shaft. A pin 9 for limiting is installed on the side of the stepped shaft.

[0025] A flange 4 is installed above the bearing body 1. The flange 4 is a hollow structure and passes through the stepped shaft of the bearing body 1 during installation. The inner ring and the lower side of the flange 4 are in contact with the outer side of the second fan-shaped side plate 61 and the upper side of the second fan-shaped bottom plate 62 respectively. A first sliding sheet 7 is installed on the flange 4. The first sliding sheet 7 has the same structure as the second sliding sheet 6, including a first fan-shaped bottom plate and a first fan-shaped side plate. The inner ring and the upper side of the flange 4 are in contact with the outer side of the first fan-shaped side plate and the lower side of the first fan-shaped bottom plate respectively. The inner side of the first fan-shaped side plate is in contact with the outer side of the stepped shaft.

[0026] The flange 4 is processed with a through positioning hole, which can be installed in cooperation with the positioning pins provided on the first sliding piece 7 and the second sliding piece 6, so as to fix the relative position of the sliding piece and the flange 4, so that the sliding piece can rotate together with the flange 4.

[0027] The outer side of the flange 4 is provided with a first connection end 5, which is used to connect to an external rotating structure. Two limit blocks 8 are installed on the flange 4, and the two limit blocks 8 are installed below the flange 4 by bolts passing through the flange 4. The limit blocks 8 are used in conjunction with the pins 9 on the bearing body 1. When the flange 4 rotates, the limit blocks 8 rotate to contact the pins 9, which can play a role of limiting and prevent the flange 4 from rotating too much.

[0028] A cover plate 3 is installed above the flange 4, and the cover plate 3 is fixedly connected to the threaded holes on the top of the bearing body 1 by bolts. The lower side of the cover plate 3 contacts the upper side of the first fan-shaped bottom plate, pressing the first sliding plate 7 so that the first sliding plate 7 can be in close contact with the side of the flange 4.

[0029] The torque-adjustable slewing bearing of the utility model is connected to an external rotating structure through the first connecting end 5 on the flange 4, and the flange 4 can rotate with the external structure. Before the slewing bearing is used, the material, model and quantity of the first sliding sheet 7 and the second sliding sheet 6 can be adjusted according to the use conditions, so that they can generate suitable friction on both sides of the flange 4 and the bearing body 1 and the cover plate 3, thereby realizing the adjustment of the slewing torque. During the rotation of the flange 4, the limit block 8 provided under the flange 4 cooperates with the pin 9 on the bearing body 1 to limit the rotation range of the flange 4.

[0030] The torque-adjustable slewing bearing of the utility model can adjust the torque before use, is easy to use, and has a wide range of applications; the inside of the bearing does not need to be coated with grease, and does not need to be cleaned and maintained in the later stage.

[0031] Although the utility model has been described in detail above with general descriptions and specific embodiments, it is obvious to those skilled in the art that some modifications or improvements can be made to the utility model. Therefore, these modifications or improvements made without departing from the spirit of the utility model are within the scope of protection claimed by the utility model.

Claims

1. A torque-adjustable slewing bearing, characterized in that: It includes a bearing body, a stepped shaft is arranged on the bearing body, a plurality of second sliding sheets are installed on the shoulder of the stepped shaft, a flange is installed above the bearing body, the flange is in contact with the second sliding sheets, a first sliding sheet is installed on the flange, the first sliding sheet is fixedly connected with the second sliding sheet, and a cover plate is arranged on the bearing body, the cover plate is in contact with the first sliding sheet.

2. The torque-adjustable slewing bearing according to claim 1, characterized in that: The second sliding plate includes a second fan-shaped bottom plate and a second fan-shaped side plate. Multiple second sliding plates are closely arranged into a circular ring structure and are set on the outer side of the stepped shaft. The lower side of the second fan-shaped bottom plate contacts the upper side of the shaft shoulder, and the inner side of the second fan-shaped side plate contacts the outer side of the stepped shaft.

3. The torque-adjustable slewing bearing according to claim 2, characterized in that: The first sliding sheet has the same structure as the second sliding sheet, and the first sliding sheet includes a first fan-shaped bottom plate and a first fan-shaped side plate.

4. The torque-adjustable slewing bearing according to claim 3, characterized in that: The inner ring and lower side surface of the flange are in contact with the outer side surface of the second fan-shaped side plate and the upper side surface of the second fan-shaped bottom plate respectively; the inner ring and upper side surface of the flange are in contact with the outer side surface of the first fan-shaped side plate and the lower side surface of the first fan-shaped bottom plate respectively; the inner side surface of the first fan-shaped side plate is in contact with the outer side surface of the stepped shaft.

5. The torque-adjustable slewing bearing according to claim 1, characterized in that: A pin is arranged on the side of the stepped shaft, and two limit blocks are arranged on the flange, and the limit blocks are used in conjunction with the pin.

6. The torque-adjustable slewing bearing according to claim 1, characterized in that: The flange is provided with a positioning hole, and the positioning pins provided on the first sliding sheet and the second sliding sheet pass through the positioning hole for connection.

7. The torque-adjustable slewing bearing according to claim 1, characterized in that: The bottom surface of the bearing body is provided with a second connection end around its periphery, and the outer side of the flange is provided with a first connection end around its periphery.

Images