Four-point contact rotary bearing unbalance detection device

Abstract

The utility model provides a four point contact slewing ring bearing partial load detection device relates to slewing ring bearing field. This slewing ring bearing partial load detection device mainly is by platform, inner ring connecting disc, outer ring connecting ring, load plate, load block and dial gauge composition, the inner ring connecting disc is connected between platform and four point contact slewing ring bearing's inner ring, is used for the inner ring of four point contact slewing ring bearing is suspended fixed on the platform, load plate is with four point contact slewing ring bearing as center, is fixed in four point contact slewing ring bearing outer ring's top through outer ring connecting ring, load block is placed on load plate, is used for the partial load torque of four point contact slewing ring bearing is applied, dial gauge is pressed on load plate, is used for measuring the deflection of load plate. The utility model will the inner ring of slewing ring bearing be suspended fixed on the platform, and through load block to four point contact slewing ring bearing's outer ring is applied controllable deflection torque, and then through the measurement of load plate deflection to realize the detection to slewing ring bearing anti partial load capacity.

Description

Technical Field

[0001] This utility model is specifically a four-point contact turntable bearing off-center load detection device, which relates to the field of turntable bearing technology. Background Technology

[0002] See attached document Figure 1 and attached Figure 2 Four-point contact slewing bearings are a special type of slewing bearing widely used in industries such as robotics, excavators, wind turbines, rotary conveyors, and precision machine tool turntables. A four-point contact slewing bearing mainly consists of an inner ring 11, an outer ring 12, steel balls 13, a plug 14, and tapered pins 15. Gears are typically mounted on the outer ring 12. The characteristic of four-point contact slewing bearings is that they can withstand comprehensive loads, including axial force, radial force, and eccentric torque, through the four-point contact between the steel balls and the raceways. The eccentric load resistance of a four-point contact slewing bearing depends on the clearance between the steel balls and the raceways. However, current technology lacks eccentric load detection devices and methods for slewing bearings. Utility Model Content

[0003] To overcome the shortcomings of the prior art, this utility model discloses a four-point contact turntable bearing off-center load detection device, which adopts the following technical solution: A four-point contact slewing bearing off-center load detection device mainly consists of a platform, an inner ring connecting plate, an outer ring connecting ring, a load plate, a load block, and a dial indicator. The inner ring connecting plate is connected between the platform and the inner ring of the four-point contact slewing bearing, used to suspend and fix the inner ring of the four-point contact slewing bearing on the platform. The load plate is fixed above the outer ring of the four-point contact slewing bearing with the four-point contact slewing bearing as the center through the outer ring connecting ring. The load block is placed on the load plate to apply an off-center load torque to the four-point contact slewing bearing. The dial indicator is pressed against the load plate to measure the deflection of the load plate.

[0004] Further improve the technical solution: Threaded holes are provided on the platform, and connecting holes are provided on the inner ring connecting disc and the inner ring of the four-point contact slewing bearing. The inner ring of the four-point contact slewing bearing is suspended and fixed on the platform by bolts.

[0005] Further improve the technical solution: Connecting holes are provided on the load plate and the outer ring connecting ring, and threaded holes are provided on the outer ring of the four-point contact slewing bearing. The load plate is fixed above the outer ring of the four-point contact slewing bearing by bolts.

[0006] Further improvements to the technical solution: The off-center load detection device also includes a holder for fixing the dial indicator, which is magnetically attached to the platform or the inner ring connecting plate.

[0007] Further improve the technical solution: The load plate is a long strip plate with both ends extending beyond the four-point contact turntable bearings, and the load block is placed at the outer end of the load plate.

[0008] After implementing the above technical solution, the beneficial effects of this utility model compared to the prior art are: This invention suspends and fixes the inner ring of a four-point contact slewing bearing on a platform, and applies a controllable deflection torque to the outer ring of the four-point contact slewing bearing through an offset load block. Then, the anti-eccentric load capability of the four-point contact slewing bearing is tested by measuring the deflection of the load plate.

[0009] This invention has a simple structure, is easy to operate, and has high detection accuracy. Attached Figure Description

[0010] Appendix Figure 1 The diagram shows a schematic of a four-point contact turntable bearing off-center load detection device.

[0011] Appendix Figure 2 The attached image shows the attached image. Figure 1 Sectional view of AA.

[0012] Appendix Figure 3 The image shown is a front view of this off-center load detection device.

[0013] Appendix Figure 4 The attached image shows the attached image. Figure 3 A magnified view of a portion of the image.

[0014] Appendix Figure 5 The image shown is a top view of this off-center load detection device.

[0015] Appendix Figure 6-8 The diagram shown is a schematic of the off-center load detection method.

[0016] In the attached diagram: 1. Four-point contact slewing bearing; 11. Inner ring; 12. Outer ring; 13. Steel ball; 14. Plug; 15. Tapered pin; 2. Platform; 3. Inner ring connecting plate; 4. Outer ring connecting ring; 5. Load plate; 6. Load block; 7. Dial indicator; 8. Indicator holder. Detailed Implementation

[0017] The preferred embodiments of this utility model are described below with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are only used to explain the technical principles of this utility model and are not intended to limit the scope of protection of this utility model. It should be noted that in the description of this utility model, terms such as "front," "rear," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. This is merely for ease of description and does not indicate or imply that the device or element must have a specific orientation and positional relationship, and therefore should not be construed as a limitation of this utility model. It should also be noted that in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, it can refer to a fixed connection, a detachable connection, or an integral connection; it can refer to a mechanical connection or an electrical connection; it can refer to a direct connection or an indirect connection through an intermediate medium, or a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0018] A four-point contact slewing bearing off-center load detection device is disclosed, relating to the field of slewing bearings. The composition and detection method of this four-point contact slewing bearing off-center load detection device are described in detail below.

[0019] See attached document Figure 3-5 This four-point contact slewing bearing off-center load detection device mainly consists of a platform 2, an inner ring connecting plate 3, an outer ring connecting ring 4, a load plate 5, a load block 6, a gauge holder 8, and a dial indicator 7. The inner ring connecting plate 3 connects the platform 2 to the inner ring 11 of the four-point contact slewing bearing 1, suspending and fixing the inner ring 11 of the four-point contact slewing bearing 1 on the platform 2. The load plate 5, centered on the four-point contact slewing bearing 1, is fixed above the outer ring 12 of the four-point contact slewing bearing 1 via the outer ring connecting ring 4. The load block 6 is placed on the load plate 5 to apply an off-center load torque to the four-point contact slewing bearing 1. The dial indicator 7 rests against the load plate 5 to measure the deflection of the load plate 5.

[0020] In this embodiment, the inner diameter of the four-point contact turntable bearing 1 is Φ95mm and the outer diameter is Φ190mm. The load plate 5 is a long strip plate of 800×230mm. The load plate 5 is fixed directly above the outer ring 12 of the four-point contact turntable bearing with the four-point contact turntable bearing 1 as the center. The two ends of the load plate 5 extend outward beyond the four-point contact turntable bearing 1, and the load block 6 is placed at the outer overhang of the load plate 5.

[0021] The inner ring 11 of the four-point contact turntable bearing 1 has multiple connecting holes. Based on the connecting holes on the inner ring 11, multiple threaded holes corresponding to the inner ring connecting holes are provided on the platform 2. Multiple connecting holes corresponding to the inner ring connecting holes are provided on the inner ring connecting plate 3. Then, the inner ring 11 of the four-point contact turntable bearing 1 is suspended and fixed on the platform 2 by bolts.

[0022] The outer ring 12 of the four-point contact slewing bearing 1 has multiple threaded holes. Based on the threaded holes on the outer ring 12, multiple connecting holes corresponding to the threaded holes on the load plate 5 and the outer ring connecting ring 4 are provided. Then, the load plate 5 is fixed above the outer ring 12 of the four-point contact slewing bearing by bolts.

[0023] The dial indicator 7 is mounted on the holder 8, which is magnetically attached to the platform 2 or the inner ring connecting plate 3. By adjusting the holder 8, the dial indicator 7 can be pressed against the load plate 5.

[0024] To further illustrate the use of this off-center load detection device, this utility model also discloses an off-center load detection method for a four-point contact turntable bearing 1, comprising the following steps: S1, see appendix Figure 6 Place dial indicator 7 against the left side of load plate 5, so that the probe of dial indicator 7 is 150mm away from the center of the bearing, and then adjust the pointer to zero. S2, see appendix Figure 7 Place a 37kg load block 6 on the right end of the load plate 5, making the load block 6 300mm away from the bearing center, and then observe the pointer of the dial indicator 7. After loading the load block 6, the outer ring 12 of the four-point contact slewing bearing 1 will deflect relative to the inner ring 11, and this deflection will cause the load plate 5 to flex. If the deflection of the load plate 5 is less than -0.08mm, the off-center load test meets the requirements. S 3. Remove the load block 6, and then observe the pointer of the dial indicator 7. If the residual deflection of the load plate 5 is less than -0.01mm, the off-center load test meets the requirements. S 4, see appendix Figure 8 The load block 6 is placed at the left end of the load plate 5, so that the load block 6 is 300mm away from the center of the bearing. Then observe the pointer of the dial indicator 7. If the deflection of the load plate 5 is less than +0.08mm, the off-center load test meets the requirements. S 5. Remove the load block 6, and then observe the pointer of the dial indicator 7. If the residual deflection of the load plate 5 is less than +0.01mm, the off-center load test meets the requirements. S6. Rotate the load plate 5 by 90°, and then repeat S1-S5. If all the off-center load tests meet the requirements, the four-point contact turntable bearing 1 is qualified; otherwise, it is unqualified.

[0025] It is worth noting that the content not described in detail in the above embodiments is prior art. It is also worth noting that any additions, subtractions, substitutions, and improvements made by those skilled in the art based on the structure and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A four-point contact turntable bearing off-center load detection device, characterized in that: It mainly consists of a platform, an inner ring connecting plate, an outer ring connecting ring, a load plate, a load block, and a dial indicator. The inner ring connecting plate connects the platform to the inner ring of the four-point contact slewing bearing, and is used to suspend and fix the inner ring of the four-point contact slewing bearing on the platform. The load plate is fixed above the outer ring of the four-point contact slewing bearing with the four-point contact slewing bearing as the center through the outer ring connecting ring. The load block is placed on the load plate and is used to apply an off-center load torque to the four-point contact slewing bearing. The dial indicator is pressed against the load plate and is used to measure the deflection of the load plate.

2. The four-point contact turntable bearing off-center load detection device as described in claim 1, characterized in that: The platform has threaded holes, and the inner ring of the inner ring connecting plate and the inner ring of the four-point contact slewing bearing has connecting holes. The inner ring of the four-point contact slewing bearing is suspended and fixed on the platform by bolts.

3. The four-point contact turntable bearing off-center load detection device as described in claim 1, characterized in that: Connection holes are provided on the load plate and the outer ring connecting ring, and threaded holes are provided on the outer ring of the four-point contact slewing bearing. The load plate is fixed above the outer ring of the four-point contact slewing bearing by bolts.

4. The four-point contact turntable bearing off-center load detection device as described in claim 1, characterized in that: The off-center load detection device also includes a holder for fixing the dial indicator, which is magnetically attached to the platform or the inner ring connecting plate.

5. The four-point contact turntable bearing off-center load detection device as described in claim 1, characterized in that: The load plate is a long strip plate with both ends extending beyond the four-point contact turntable bearings, and the load block is placed on the outer end of the load plate.

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