Slewing bearing gap detection device

Abstract

The present application relates to the technical field of bearing detection equipment, and specifically relates to a slewing bearing gap detection device, which comprises a support chamber, the top of the support chamber is fixedly connected with a platform, the top of the platform is rotationally connected with a rotary table, the upper portion of the rotary table is provided with a fixed disc, the top of the fixed disc is fixedly connected with a second motor, the inner side of the support chamber is fixedly connected with a fixed chamber, the inner side of the fixed chamber is provided with a guide assembly; the first motor drives the first gear to drive the second gear, and drives the sliding column and the ball needle head of the rotating disc to expand and slide outward, the gap of the slewing bearing is detected by using the ball needle head, and after the detection plate is attached to the inner wall of the inner ring by the electric sliding rail, the guide rod is stressed to be inclined, and the guide disc is also inclined, at this time, the inclination angle of the guide disc is detected by using the inclined angle sensor to judge the use of the slewing bearing.

Description

Technical Field

[0001] This invention relates to the field of bearing testing equipment technology, and more specifically to a slewing bearing clearance testing device. Background Technology

[0002] Slewing bearings, also known as rotary bearings, are large bearings that can simultaneously withstand axial force, radial force, and overturning moment. They play a core role as "rotational joints" in mechanical systems. They consist of inner and outer rings, rolling elements (steel balls / rollers), cages, and seals, and achieve low-friction rotation through the rolling elements.

[0003] Patent application CN117073612A discloses a slewing bearing clearance detection device, comprising a base, multiple fixing mechanisms, a control device, and a detection mechanism. The multiple fixing mechanisms are respectively mounted on the base; the control device is mounted on the base and connected to the detection mechanism; the detection mechanism includes a rotary drive device, a crossbar assembly, a vertical bar assembly, a measuring assembly, and two sets of limiting assemblies. The rotary drive device is mounted on the control device; the crossbar assembly is connected to the output shaft of the rotary drive device; the vertical bar assembly is movably mounted on the crossbar assembly; the measuring assembly and the two sets of limiting assemblies are respectively located at the ends of the vertical bar assembly, with the two sets of limiting assemblies located on both sides of the measuring assembly. This slewing bearing clearance detection device has the advantages of small data error and good data representativeness, thus ensuring the accuracy of the detection data.

[0004] Although the aforementioned patent utilizes a drive device, a crossbar assembly, a vertical bar assembly, a measuring assembly, and two sets of limiting assemblies for clearance detection, achieving the effect of small data error and ensuring data accuracy, it is worth noting that under long-term use, a slight misalignment may form between the inner and outer rings of the slewing bearing. This misalignment will increase the friction of the rolling elements and gradually raise the temperature, thus aggravating wear and further exacerbating the misalignment, seriously affecting its service life. Therefore, a slewing bearing clearance detection device is proposed. Summary of the Invention

[0005] The purpose of this invention is to provide a slewing bearing clearance detection device to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides a slewing bearing clearance detection device, comprising a support chamber, a platform fixedly connected to the top of the support chamber, a turntable rotatably connected to the top of the platform, a fixed disk disposed above the turntable, a second motor fixedly connected to the top of the fixed disk, a fixed chamber fixedly connected to the inner wall of the support chamber, and a guide assembly disposed on the inner side of the fixed chamber.

[0007] An inner columnar frame is provided inside the fixed chamber, and the guide assembly is located inside the inner columnar frame. The guide assembly includes a guide rod, and a first ball and a second ball are fixedly connected to the outer wall of the guide rod.

[0008] The outer wall of the fixed chamber has multiple arched holes, and multiple extension plates are fixedly connected to the outer wall of the fixed chamber. The multiple extension plates are located on one side of the multiple arched holes. A first connecting rod is rotatably connected to the top of one of the extension plates. A second connecting rod is rotatably connected to the end of the first connecting rod away from the extension plate. The second connecting rod is sleeved on the outer wall of the second sphere.

[0009] Preferably, threaded columns are rotatably connected to the top of both sides of the platform, and sliding plates are threadedly connected to the outer walls of the threaded columns. A No. 1 motor is fixedly connected to the bottom of one side of the platform between the two threaded columns, and the output end of the No. 1 motor is fixedly connected to a No. 1 gear through the platform.

[0010] Preferably, the top of the turntable is provided with multiple strip grooves, and a sliding column is slidably connected to the inner side of the strip groove. A detection needle is fixedly connected to the top of the sliding column, and a ball needle head is fixedly connected to the end of the detection needle away from the sliding column. A protruding column is fixedly connected to the bottom of the sliding column.

[0011] Preferably, a turntable is rotatably connected to the inner side of the turntable, and a second gear is fixedly connected to the bottom of the turntable. The second gear meshes with the first gear, and a threaded groove is formed on the surface of the turntable. The protruding column is slidably connected in the threaded groove.

[0012] Preferably, the top of the extension plate on the other side is rotatably connected to a third connecting rod, and the end of the third connecting rod away from the extension plate is rotatably connected to a fourth connecting rod. The end of the fourth connecting rod away from the third connecting rod is sleeved on the outer wall of the second sphere. The inner wall formed by the combination of the ends of the second and fourth connecting rods forms a spherical inner wall that fits with the outer wall of the second sphere.

[0013] Preferably, a No. 3 motor is fixedly connected to the outer wall of the fixed chamber, a No. 1 rotating rod is fixedly connected to the output end of the No. 3 motor, a helical gear is fixedly connected to the end of the No. 1 rotating rod away from the No. 3 motor, multiple columns are fixedly connected to the bottom perimeter of the fixed chamber, a chassis is fixedly connected to the end of the multiple columns away from the fixed chamber, and multiple angle sensors are fixedly connected to the top inner side of the chassis.

[0014] Preferably, the inner wall of the inner columnar frame is provided with an inner spherical surface, the first sphere is movably connected in the inner spherical surface, and a helical rack is fixedly connected to the top of the inner columnar frame, the helical rack meshing with a helical gear.

[0015] Preferably, a guide plate is fixedly connected to the bottom of the guide rod, and the position of the guide plate matches the position of the angle sensor. The second ball is fixedly connected to the upper end of the guide rod, and a second rotating rod is rotatably connected to the top of the second ball. An electric telescopic rod is fixedly connected to the end of the second rotating rod away from the second ball.

[0016] Preferably, the outer wall of the electric telescopic rod is fixedly connected with multiple electric slide rails, the positions of the electric slide rails are staggered with the positions of the sliding column, a detection plate is slidably connected to the top of the electric slide rails, and the end of the electric telescopic rod away from the second rotating rod is fixedly connected to the output end of the second motor.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0018] 1. In this slewing bearing clearance detection device, a No. 1 motor drives a No. 1 gear to drive a No. 2 gear, which in turn drives the turntable transmission sliding column and the ball needle head to slide outward, and the ball needle head is used to detect the clearance of the slewing bearing.

[0019] 2. In this slewing bearing clearance detection device, after the detection plate is driven by the electric slide rail to come into contact with the inner wall of the inner ring, the guide rod is tilted by force, which in turn causes the guide plate to tilt. At this time, the tilt angle of the guide plate is detected by the angle sensor to determine the condition of the slewing bearing.

[0020] 3. In this slewing bearing clearance detection device, the electric telescopic rod is driven to rotate by the No. 2 motor, which simultaneously drives the detection plate to rotate along the inner wall of the inner ring. This also drives the guide plate to tilt and rotate, so that the tilt sensor can collect the maximum tilt angle. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention;

[0022] Figure 2 This is a schematic cross-sectional view of the entire invention;

[0023] Figure 3 This is a schematic longitudinal sectional view of the present invention;

[0024] Figure 4 This is a schematic diagram of the overall unfolded three-dimensional structure of the present invention;

[0025] Figure 5 This is a three-dimensional structural diagram of the turntable and fixed chamber of the present invention;

[0026] Figure 6 This is a three-dimensional schematic diagram of the interior of the support chamber of the present invention.

[0027] Figure 7This is a schematic diagram of the guiding component structure of the present invention;

[0028] Figure 8 This is a schematic diagram of the turntable structure of the present invention;

[0029] The labels in the diagram are as follows:

[0030] 1. Support chamber; 11. Platform; 111. Threaded column; 1111. Sliding plate; 112. Motor No. 1; 113. Gear No. 1; 12. Turntable; 121. Strip groove; 122. Sliding column; 1221. Detection needle; 1222. Ball needle tip; 1223. Protruding column; 123. Turntable; 1231. Gear No. 2; 1232. Threaded groove; 13. Fixed plate; 131. Motor No. 2;

[0031] 2. Fixed chamber; 21. Arched hole; 22. Extension plate; 221. Link 1; 222. Link 2; 223. Link 3; 224. Link 4; 23. Motor 3; 231. Rotating rod 1; 232. Helical gear; 24. Column; 241. Chassis; 2411. Angle sensor; 25. Inner column frame; 251. Inner spherical surface; 252. Helical rack;

[0032] 3. Guide assembly; 31. Guide rod; 311. Ball No. 1; 312. Ball No. 2; 313. Rotating rod No. 2; 32. Guide disc; 33. Electric telescopic rod; 331. Electric slide rail; 332. Detection plate. Detailed Implementation

[0033] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] Please see Figures 1-8 As shown, this embodiment provides a slewing bearing clearance detection device, including a support chamber 1. A platform 11 is fixedly connected to the top of the support chamber 1. A turntable 12 is rotatably connected to the top of the platform 11. A fixed disk 13 is arranged above the turntable 12. A second motor 131 is fixedly connected to the top of the fixed disk 13. A fixed chamber 2 is fixedly connected to the inner wall of the support chamber 1. A guide assembly 3 is arranged inside the fixed chamber 2. An inner columnar frame 25 is arranged inside the fixed chamber 2. The guide assembly 3 is arranged inside the inner columnar frame 25. The guide assembly 3 includes a guide rod 31. A first ball 311 and a second ball 312 are fixedly connected to the outer wall of the guide rod 31.

[0035] Threaded posts 111 are rotatably connected to the top of both sides of platform 11. Sliding plates 1111 are threaded onto the outer walls of the threaded posts 111. A motor 112 is fixedly connected to the bottom of one side of platform 11 between the two threaded posts 111. The output end of motor 112 is fixedly connected to a gear 113 through platform 11. Multiple slots 121 are formed on the top of turntable 12. Sliding posts 122 are slidably connected to the inner sides of slots 121. A fixed plate 1111 is fixedly connected to the top of each sliding post 122. The detection needle 1221 has a ball needle 1222 fixedly connected to the end of the detection needle 1221 away from the sliding column 122. The bottom of the sliding column 122 is fixedly connected to the protruding column 1223. The inner side of the turntable 12 is rotatably connected to the turntable 12. The bottom of the turntable 123 is fixedly connected to the second gear 1231, which meshes with the first gear 113. The surface of the turntable 123 is provided with a threaded groove 1232, and the protruding column 1223 is slidably connected in the threaded groove 1232.

[0036] To explain, the threaded groove 1232 is an equidistant threaded groove, and in the initial state, the distance between each ball needle 1222 and the center of the turntable 12 is the same, so that when the threaded groove 1232 rotates with the turntable 123, the moving distance of each ball needle 1222 always remains synchronized.

[0037] The outer wall of the fixing chamber 2 has multiple arched holes 21. Multiple extension plates 22 are fixedly connected to the outer wall of the fixing chamber 2. The multiple extension plates 22 are located on one side of the multiple arched holes 21. The top of one extension plate 22 is rotatably connected to a first connecting rod 221. The end of the first connecting rod 221 away from the extension plate 22 is rotatably connected to a second connecting rod 222. The second connecting rod 222 is sleeved on the outer wall of the second sphere 312. The top of the other extension plate 22 is rotatably connected to a third connecting rod 223. The end of the third connecting rod 223 away from the extension plate 22 is rotatably connected to a fourth connecting rod 224. The end of the fourth connecting rod 224 away from the third connecting rod 223 is sleeved on the outer wall of the second sphere 312. The inner wall of the combination of the ends of the second connecting rod 222 and the fourth connecting rod 224 A spherical inner wall is formed that fits the outer wall of the second sphere 312. A third motor 23 is fixedly connected to the outer wall of the fixed chamber 2. A first rotating rod 231 is fixedly connected to the output end of the third motor 23. A helical gear 232 is fixedly connected to the end of the first rotating rod 231 away from the third motor 23. Multiple columns 24 are fixedly connected to the bottom periphery of the fixed chamber 2. A chassis 241 is fixedly connected to the end of the multiple columns 24 away from the fixed chamber 2. Multiple angle sensors 2411 are fixedly connected to the top inner side of the chassis 241. An inner spherical surface 251 is opened on the inner wall of the inner column frame 25. The first sphere 311 is movably connected in the inner spherical surface 251. A helical rack 252 is fixedly connected to the top of the inner column frame 25. The helical rack 252 meshes with the helical gear 232.

[0038] A guide plate 32 is fixedly connected to the bottom of the guide rod 31. The position of the guide plate 32 matches the position of the angle sensor 2411. The second ball 312 is fixedly connected to the upper end of the guide rod 31. The top of the second ball 312 is rotatably connected to the second rotating rod 313. An electric telescopic rod 33 is fixedly connected to the end of the second rotating rod 313 away from the second ball 312. Multiple electric slide rails 331 are fixedly connected to the outer wall of the electric telescopic rod 33. The positions of the electric slide rails 331 are staggered from the positions of the sliding column 122. A detection plate 332 is slidably connected to the top of the electric slide rails 331. The end of the electric telescopic rod 33 away from the second rotating rod 313 is fixedly connected to the output end of the second motor 131.

[0039] Therefore, when it is necessary to test the clearance of the slewing bearing, the operator places the slewing bearing on the platform 11, aligns the bolt holes around the slewing bearing with the threaded post 111, and fixes the slewing bearing to the top of the platform 11 through the threaded post 111. At this time, the first motor 112 drives the first gear 113 to rotate, which in turn drives the second gear 1231 to rotate. Simultaneously, the second gear 1231 drives the turntable 123 to rotate. During the rotation of the turntable 123, the threaded groove 1232 drives the protruding post 1223 to slide outward along the strip groove 121. At this time, the protruding post 1223 also drives the sliding post 122, the detection needle 1221, and the ball needle 1222 to move towards the inside of the slewing bearing to test the clearance of the slewing bearing, and the obtained data is saved.

[0040] It should be noted that when it is necessary to ensure that the ball needle 1222 and the clearance position of the slewing bearing are matched after the slewing bearing is placed, the operator can use a tool to rotate the threaded column 111 to make the sliding plate 1111 slide up and down. Similarly, the up and down sliding of the sliding plate 1111 can drive the slewing bearing to move up and down, which is used to adjust the clearance position of the slewing bearing.

[0041] In addition, when it is necessary to detect whether the inner and outer rings of the slewing bearing are misaligned, tilted, or offset, the slewing bearing is placed and fixed on the platform 11, and its position is adjusted by the threaded post 111. Then, the detection plate 332 is driven to slide outward by the electric slide rail 331 until the detection plate 332 stops against the inner wall of the inner ring of the slewing bearing. At this time, if the inner ring of the slewing bearing is misaligned, tilted, or offset, the thrust on each detection plate 332 will change after the electric slide rail 331 stops driving the detection plate 332. This will cause each detection plate 332 to tilt in different directions according to the tilt direction of the inner ring of the slewing bearing. Simultaneously, it will cause the electric telescopic rod 33, guide rod 31 and second rotating rod 313 to tilt to one side. At this time, the tilt angle of guide rod 31 is the same as the tilt angle of slewing bearing. Similarly, when guide rod 31 tilts, it will cause the guide disk 32 at its bottom to tilt with the first ball 311 inside the inner spherical surface 251 as the fulcrum. The tilt angle of guide disk 32 will be collected by the angle sensor 2411, and the tilt and misalignment data between the inner and outer rings of slewing bearing will be calculated in the control console. If the data is within the threshold range, it will be repaired later. If it exceeds the maximum threshold range, it cannot continue to be used.

[0042] Furthermore, considering that the slewing bearing requires precise data support for both the inner and outer ring clearances, as well as misalignment, tilting, or offset of the inner ring, the position may not be accurately located during testing. As mentioned above, when the detection plate 332 is pressed against the inner wall of the inner ring, the entire slewing bearing and the detection plate 332 move upwards along the electric slide rail 331 under the extension and retraction of the electric telescopic rod 33 and the rotation of the threaded column 111. At this time, the second motor 131 starts and drives the electric telescopic rod 33 to rotate. The detection plate 332 will slide along the inner wall of the inner ring. If the inner ring is tilted or misaligned at this time, the detection plate 332 will drive the guide rod 31, the electric telescopic rod 33, and the second rotating rod 313 to rotate together around the first ball 311 as the fulcrum. Similarly, the guide plate 32 will also tilt and rotate. At this time, the multiple angle sensors 2411 can collect the maximum rotation angle of the guide plate 32.

[0043] It should be noted that during the rotation of the guide rod 31, the first link 221, the second link 222, the third link 223, and the fourth link 224 all serve as supports to limit the maximum tilt angle that the guide rod 31 can tilt.

[0044] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A slewing bearing clearance detection device, comprising a support chamber (1), characterized in that: The top of the support chamber (1) is fixedly connected to a platform (11), the top of the platform (11) is rotatably connected to a turntable (12), a fixed plate (13) is provided above the turntable (12), a second motor (131) is fixedly connected to the top of the fixed plate (13), a fixed chamber (2) is fixedly connected to the inner wall of the support chamber (1), and a guide assembly (3) is provided on the inner side of the fixed chamber (2). The inner side of the fixed chamber (2) is provided with an inner column frame (25), and the guide assembly (3) is provided inside the inner column frame (25). The guide assembly (3) includes a guide rod (31), and the outer wall of the guide rod (31) is fixedly connected to a first ball (311) and a second ball (312). The outer wall of the fixed chamber (2) is provided with multiple arched holes (21), and multiple extension plates (22) are fixedly connected to the outer wall of the fixed chamber (2). The multiple extension plates (22) are respectively located on one side of the multiple arched holes (21). A first connecting rod (221) is rotatably connected to the top of one side of the extension plate (22). A second connecting rod (222) is rotatably connected to the end of the first connecting rod (221) away from the extension plate (22). The second connecting rod (222) is sleeved on the outer wall of the second sphere (312). The top of both sides of the platform (11) is rotatably connected with threaded columns (111), and the outer wall of the threaded column (111) is threaded with a sliding plate (1111). A motor (112) is fixedly connected to the bottom of one side of the platform (11) between the two threaded columns (111). The output end of the motor (112) is fixedly connected to a gear (113) through the platform (11). The top of the turntable (12) is provided with multiple strip grooves (121). A sliding column (122) is slidably connected to the inner side of the strip groove (121). A detection needle (1221) is fixedly connected to the top of the sliding column (122). A ball needle head (1222) is fixedly connected to the end of the detection needle (1221) away from the sliding column (122). A protruding column (1223) is fixedly connected to the bottom of the sliding column (122).

2. The slewing bearing clearance detection device according to claim 1, characterized in that: The turntable (12) is rotatably connected to the inner side of the turntable (12), and a second gear (1231) is fixedly connected to the bottom of the turntable (123). The second gear (1231) meshes with the first gear (113). A threaded groove (1232) is opened on the surface of the turntable (123), and the protruding column (1223) is slidably connected in the threaded groove (1232).

3. The slewing bearing clearance detection device according to claim 2, characterized in that: On the other side, the top of the extension plate (22) is rotatably connected to a third connecting rod (223). The third connecting rod (223) is rotatably connected to a fourth connecting rod (224) at the end away from the extension plate (22). The fourth connecting rod (224) is sleeved on the outer wall of the second sphere (312) at the end away from the third connecting rod (223). The inner wall of the combined ends of the second connecting rod (222) and the fourth connecting rod (224) forms a spherical inner wall that fits with the outer wall of the second sphere (312).

4. The slewing bearing clearance detection device according to claim 3, characterized in that: A No. 3 motor (23) is fixedly connected to the outer wall of the fixed chamber (2). A No. 1 rotating rod (231) is fixedly connected to the output end of the No. 3 motor (23). A helical gear (232) is fixedly connected to the end of the No. 1 rotating rod (231) away from the No. 3 motor (23). Multiple columns (24) are fixedly connected to the bottom periphery of the fixed chamber (2). A chassis (241) is fixedly connected to the end of the multiple columns (24) away from the fixed chamber (2). Multiple angle sensors (2411) are fixedly connected to the top inner side of the chassis (241).

5. The slewing bearing clearance detection device according to claim 4, characterized in that: The inner wall of the inner column frame (25) is provided with an inner spherical surface (251), and the first sphere (311) is movably connected in the inner spherical surface (251). The top of the inner column frame (25) is fixedly connected with a helical rack (252), and the helical rack (252) meshes with a helical gear (232).

6. The slewing bearing clearance detection device according to claim 5, characterized in that: The bottom of the guide rod (31) is fixedly connected to the guide disk (32), the position of the guide disk (32) matches the position of the angle sensor (2411), the second ball (312) is fixedly connected to the upper end of the guide rod (31), the top of the second ball (312) is rotatably connected to the second rotating rod (313), and the second rotating rod (313) is fixedly connected to the electric telescopic rod (33) at the end away from the second ball (312).

7. The slewing bearing clearance detection device according to claim 6, characterized in that: Multiple electric slide rails (331) are fixedly connected to the outer wall of the electric telescopic rod (33). The positions of the electric slide rails (331) and the sliding column (122) are staggered. A detection plate (332) is slidably connected to the top of the electric slide rails (331). The end of the electric telescopic rod (33) away from the second rotating rod (313) is fixedly connected to the output end of the second motor (131).

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