Integrated laser radar bearing

Abstract

The invention provides an integrated laser radar bearing which comprises an outer ring and a plurality of rollers and further comprises a rotor cup, a core shaft, a ferrule and a first dustproof cover, the core shaft comprises an annular protruding part and a first annular groove formed in the annular protruding part, the ferrule is arranged on the core shaft in a sleeving mode and abuts against the annular protruding part in the axial direction, and the first annular groove is formed in the annular protruding part. A first ring groove is formed in the outer ring, a second ring groove is formed in the sleeve ring, the outer ring, the first ring groove and the second ring groove respectively form a first roller path and a second roller path for filling rollers, the rotor cup is sleeved on the outer ring in an interference manner, and the first dustproof covers are arranged at two axial ends of the outer ring to cover the first roller path and the second roller path. In order to overcome the defects in the prior art, the invention provides the integrated laser radar bearing which is convenient to assemble, higher in precision, high in stability and smaller in size.

Description

Technical Field

[0001] The invention relates to a bearing, in particular to an integrated laser radar bearing. Background Art

[0002] A bearing is a mechanical element used for rotating support of a mechanical body. The application of bearings is very extensive. In order to adapt to different usage scenarios and requirements, bearings have also derived a lot of types. For example, when bearings need to be used in a laser radar system, the laser radar system works by transmitting a detection signal (laser beam) to the target, and then comparing the received signal reflected from the target (target echo) with the transmitted signal. After appropriate processing, the relevant information of the target can be obtained. The laser radar system has requirements for concealment, volume, quality, stability and vibration resistance, so the requirements for the bearings therein are also very high. The existing technology uses bearings in laser radar systems, usually by combining two deep groove ball bearings with a housing and a core shaft, and then pre-tightening the two bearings. This has high requirements on the matching of the inner and outer diameters of the bearings and the dimensions of the housing and the core shaft, which is not easy to assemble. At the same time, the housing and the core shaft have poor concentricity with the bearings, which affects the rotation accuracy of the bearings and the poor rotation stability, which ultimately leads to a decrease in the accuracy of laser radar detection and reduced performance. The bearing assembly requires more components and will occupy more internal space of the radar, increasing the size of the radar. Summary of the invention

[0003] In view of the deficiencies in the prior art, the present invention provides an integrated laser radar bearing which is easy to assemble, has higher precision, greater stability and smaller size.

[0004] To achieve the above-mentioned purpose, the present invention provides an integrated laser radar bearing, comprising an outer ring and a plurality of rollers, and also comprising a rotor cup, a core shaft, a ferrule and a first dust cover, wherein the core shaft comprises an annular protrusion and a first annular groove arranged on the annular protrusion, the ferrule is sleeved on the core shaft and axially abutted against the annular protrusion, the ferrule is provided with a second annular groove, the outer ring and the first annular groove and the second annular groove respectively form a first raceway and a second raceway for roller loading, the rotor cup is interference fit on the outer ring, and the first dust cover is arranged at both ends of the outer ring axially to cover the first raceway and the second raceway.

[0005] The advantages of adopting the above technical solution are: by setting a rotor cup, a core shaft, a ring and a first dust cover, an annular protrusion is set on the core shaft connected to the rotor, and a first groove is set on the annular protrusion, a first raceway is formed by the first annular groove and the outer ring, and then the ring is put on the core shaft and axially abutted against the annular protrusion, and a second annular groove is set on the ring, a second raceway is formed by the second annular groove and the outer ring, the rollers are filled through the first raceway and the second raceway, and then the rotor cup is interference fit on the outer ring, connected to other components of the laser radar system through the rotor cup, and finally, the first dust cover is set on both sides of the outer ring to cover the first raceway and the second raceway to ensure sealing and prevent lubricating oil from leaking and contaminating other components. The two deep groove ball bearings of the prior art are integrated to facilitate assembly, avoid errors caused during installation, ensure the accuracy of the bearing, and have stronger overall stability.

[0006] The present invention can be further configured as follows: a screw, a washer and a spring are provided at one end of the core shaft corresponding to the ferrule, the screw fixes the washer at the end of the core shaft, the ferrule and the washer are fitted with each other at intervals, the spring is sleeved on the core shaft, and the two ends of the spring are respectively abutted against the ferrule and the washer.

[0007] Through further configuration, screws, washers and springs are arranged at one end of the bearing core shaft corresponding to the ferrule, the spring is put on the core shaft, and the washer is fixed to the end of the core shaft by means of screws, so that the two ends of the spring are respectively abutted against the washer and the ferrule, and the ferrule is pressed against the annular protrusion to avoid the problem of micro-wear caused by transportation vibration due to the gap between the ferrule and the annular protrusion, which will affect the noise and life of the radar.

[0008] The present invention may be further configured as follows: the rotor cup includes an extension portion, the extension portion is arranged in a ring shape, and the extension portion extends toward the washer and covers the spring.

[0009] By further arranging an extension portion on the rotor cup and extending toward the washer, the spring portion can be covered to enhance stability.

[0010] The present invention may be further configured as follows: the extension portion is provided with an annular groove and a hook portion located outside the annular groove.

[0011] Through further arrangement, the hooks on the extension part and the outer side of the annular groove facilitate the connection with the external device and then positioning.

[0012] The present invention can be further configured to include a second dust cover, wherein the second dust cover is arranged in a direction close to the other end of the core shaft, and the second dust cover is arranged on the inner side of the first dust cover on the same side.

[0013] Through further configuration, a second dust cover is arranged on the inner side of the first dust cover near the other end of the core shaft to enhance the sealing effect and prevent the lubricating oil inside the bearing from leaking out, thereby contaminating the interior of the laser radar.

[0014] The present invention may be further configured such that: a clearance fit is formed between the inner edge of the second dust cover and the core shaft, and a clearance fit is formed between the second dust cover and the first dust cover installed on the same side.

[0015] Through further configuration, a non-contact seal is formed by the clearance fit between the inner edge of the second dust cover and the core shaft, thereby avoiding interference between the second dust cover and the core shaft. In addition, the clearance fit between the second dust cover and the first dust cover on the same side can prevent external impurities from passing through the first dust cover and directly entering the interior of the bearing through the gap between the second dust cover and the core shaft; or the lubricating oil does not directly seep out after passing through the second dust cover, but uses the gap between the first dust cover and the second dust cover as a transition, thereby better enhancing the sealing ability.

[0016] The present invention can be further configured as follows: identification grooves are provided on the outer ring and the ferrule.

[0017] Through further configuration, identification grooves are provided on both the outer ring and the ferrule, and the orientations of the outer ring and the ferrule can be identified through the identification grooves, so as to facilitate installation by operators. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of an embodiment of the present invention; Figure 2 For the embodiment of the present invention Figure 1 Enlarged view of part a; Figure 3 For the embodiment of the present invention Figure 1 Enlarged view of part b; Among them: outer ring 1; roller 2; rotor cup 3; extension part 31; annular groove 311; hook part 312; spindle 4; annular protrusion 41; first annular groove 42; screw 43; washer 44; spring 45; ring 5; second annular groove 51; first dust cover 6; second dust cover 7; identification groove 8. DETAILED DESCRIPTION

[0019] An embodiment of an integrated laser radar bearing of the present invention is as follows: Figure 1-3As shown: it includes an outer ring 1 and a plurality of rollers 2, and also includes a rotor cup 3, a core shaft 4, a ferrule 5 and a first dust cover 6. The core shaft 4 includes an annular protrusion 41 and a first annular groove 42 arranged on the annular protrusion. The ferrule 5 is sleeved on the core shaft 4 and axially abuts against the annular protrusion 41. The ferrule 5 is provided with a second annular groove 51. The outer ring 1 and the first annular groove 42 and the second annular groove 51 respectively form a first raceway and a second raceway for roller loading. The rotor cup 3 is interference-fitted on the outer ring 1. The first dust cover 6 is arranged at both ends of the outer ring 1 in the axial direction to cover the first raceway and the second raceway.

[0020] A screw 43, a washer 44 and a spring 45 are provided at one end of the core shaft 4 corresponding to the ferrule 5. The screw 43 fixes the washer 44 at the end of the core shaft 4. The ferrule 5 and the washer 44 are spaced apart. The spring 5 is sleeved on the core shaft 4, and the two ends of the spring 45 are respectively abutted against the ferrule 5 and the washer 44.

[0021] The rotor cup 3 includes an extension portion 31 . The extension portion 31 is annular in shape and extends toward the washer 44 to cover the spring 45 .

[0022] The extension portion 31 is provided with an annular groove 311 and a hook portion 312 located outside the annular groove.

[0023] A second dust cover 7 is also included. The second dust cover 7 is arranged in a direction close to the other end of the core shaft 4, and the second dust cover 7 is located on the inner side of the first dust cover 6.

[0024] The inner edge of the second dust cover 7 is clearance-matched with the core shaft, and the second dust cover 7 is clearance-matched with the first dust cover 6 installed on the same side.

[0025] The outer ring 1 and the ferrule 5 are both provided with identification grooves 8 .

[0026] The above example is only one preferred specific example of the present invention. Common changes and substitutions made by those skilled in the art within the scope of the technical solution of the present invention are all included in the protection scope of the present invention.

Claims

1. An integrated laser radar bearing, comprising an outer ring and a plurality of rollers, characterized in that: It includes a rotor cup, a core shaft, a ferrule and a first dust cover, the core shaft includes an annular protrusion and a first annular groove arranged on the annular protrusion, the ferrule is sleeved on the core shaft and axially abuts against the annular protrusion, the ferrule is provided with a second annular groove, the outer ring and the first annular groove and the second annular groove respectively form a first raceway and a second raceway for roller loading, the rotor cup is interference-fitted on the outer ring, and the first dust cover is arranged at both ends of the outer ring axially to cover the first raceway and the second raceway.

2. The integrated laser radar bearing according to claim 1, characterized in that: A screw, a washer and a spring are arranged at one end of the core shaft corresponding to the ferrule. The screw fixes the washer at the end of the core shaft. The ferrule and the washer are fitted with each other at intervals. The spring is sleeved on the core shaft, and the two ends of the spring are respectively abutted against the ferrule and the washer.

3. The integrated laser radar bearing according to claim 2, characterized in that: The rotor cup comprises an extension portion, which is arranged in a ring shape and extends toward the washer to cover the spring.

4. The integrated laser radar bearing according to claim 3, characterized in that: The extension portion is provided with an annular groove and a hook portion located outside the annular groove.

5. The integrated laser radar bearing according to claim 1, 2 or 3, characterized in that: A second dust cover is included, and the second dust cover is arranged in a direction close to the other end of the core shaft, and the second dust cover is arranged on the inner side of the first dust cover on the same side.

6. The integrated laser radar bearing according to claim 1, 2 or 3, characterized in that: The inner edge of the second dust cover is clearance-matched with the core shaft, and the second dust cover is clearance-matched with the first dust cover installed on the same side.

7. The integrated laser radar bearing according to claim 1, 2 or 3, characterized in that: The outer ring and the ferrule are both provided with identification grooves.

Images