A rotor mounting structure for a crusher

Abstract

The application relates to the technical field of rotor installation, in particular to a rotor installation structure for a crusher, which comprises a motor output shaft, a rotor fixedly installed on the motor output shaft, a first rotor installation base, the outer wall of the rotor is fixedly installed with an inner bearing ring, the outer wall of the inner bearing ring is rotatably sleeved with an outer bearing ring, the outer wall of the first rotor installation base is fixedly connected with a plurality of support frames, the outer wall of the support frame is fixedly connected with a second rotor installation base, the first rotor installation base and the second rotor installation base are used in cooperation to limit the position of the outer bearing ring, when the second contact block moves circumferentially to remove the contact with the contact ball, the torsion spring resets to drive the jet guide plate to rotate and reset, since a plurality of second contact blocks are arranged, the jet guide plate reciprocatingly and rapidly swings in the process of spraying the lubricating liquid, so that the lubricating liquid is more uniformly sprayed on the rotor and the inner bearing ring.

Description

Technical Field

[0001] This invention relates to the field of rotor mounting technology, specifically to a rotor mounting structure for a crusher. Background Technology

[0002] Crushers are core heavy equipment in open-pit mining, underground mineral processing, and aggregate production processes. They primarily use mechanical forces such as compression, impact, and shearing to crush large pieces of raw ore, rock, and hard solid materials to the particle size required by the process. They are widely used in metal and non-metal mining, building material preparation, and the resource utilization of mine solid waste. They are key equipment connecting mining operations with subsequent beneficiation and screening processes. The rotor installation structure of mining crushers generally adopts a combination of shaft rotation support and fixed installation, falling within the conventional technical category of shaft and bearing installation in mechanical engineering. This type of installation structure mainly consists of a main shaft, rotor hub, rolling bearings, bearing housings, and fasteners. The rotor hub is fixedly assembled in the middle of the main shaft, forming a synchronously rotating integral structure. The main shaft is rotated and supported at both ends by rolling bearings. The inner ring of the bearing is fitted to the main shaft, while the outer ring is assembled inside the bearing housing. The bearing housing is then fixed to the corresponding installation position on the crusher frame using multiple sets of bolts, thus completing the overall support and positioning of the rotor.

[0003] The existing crusher rotor installation structure makes lubrication of bearings and rotor mating parts inconvenient. It typically requires manual, single-point grease application after the machine is stopped, as it cannot be quickly and centrally supplied via external lubrication pipes. This results in low lubrication efficiency and difficulty in ensuring uniform and sufficient lubrication. Long-term operation can lead to insufficient lubrication, grease aging, or oil circuit blockage, causing increased bearing friction, excessive temperature rise, and even sintering or seizing failures. The rotor and main shaft rely solely on shoulders and lock nuts for simple axial positioning, which can easily lead to axial movement and loosening under heavy-load impact conditions in mines, posing safety hazards such as rotor detachment and equipment jamming. Furthermore, the installation structure lacks integrated convenient lubrication channels, requiring disassembly of bearing housings or end covers for oil replenishment during maintenance, resulting in high maintenance costs, long downtime, and severely impacting continuous mine operation efficiency. Summary of the Invention

[0004] The purpose of this invention is to provide a rotor mounting structure for a crusher to solve the problems mentioned in the background art, such as low lubrication efficiency, difficulty in ensuring uniform and sufficient lubrication, insufficient lubrication after long-term operation, grease aging or oil circuit blockage, which leads to increased bearing friction and high maintenance costs due to the need to disassemble the bearing housing or end cover for oil replenishment.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a rotor mounting structure for a crusher, comprising a motor output shaft, a rotor fixedly mounted on the motor output shaft, and a first rotor mounting base. An inner bearing ring is fixedly mounted on the outer wall of the rotor, and an outer bearing ring is rotatably sleeved on the outer wall of the inner bearing ring. Multiple support frames are fixedly connected to the outer wall of the first rotor mounting base, and a second rotor mounting base is fixedly connected to the outer wall of the support frames. The first and second rotor mounting bases work together to restrict the position of the outer bearing ring. An annular frame is fixedly connected to the outer wall of the first rotor mounting base, and two spray pipes are fixedly connected to the inner wall of the annular frame. A guide frame is fixedly mounted at the end of the spray pipe, and a spray guide plate is hinged on the guide frame. A first hollow rotating ring is rotatably mounted on the annular frame, and multiple arc-shaped scrapers are fixedly connected to the outer wall of the first hollow rotating ring. Multiple second through holes are opened on the arc-shaped scrapers.

[0006] Preferably, a rotating rod is rotatably connected to the inner wall of the guide frame, a rotating block is fixedly connected to the outer wall of the rotating rod, a torsion spring is sleeved on the rotating rod, one end of the torsion spring is fixedly connected to the outer wall of the rotating block, the other end of the torsion spring is fixedly connected to the inner wall of the guide frame, the jet guide plate is fixedly connected to the outer wall of the rotating block, and the jet guide plate has multiple third through holes.

[0007] Preferably, a transmission gear ring is fixedly connected to the inner wall of the first hollow rotating ring, a fixed frame is fixedly connected to the outer wall of the annular frame, and a servo drive motor is fixedly installed on the outer wall of the fixed frame.

[0008] Preferably, the output end of the servo drive motor is fixedly connected to a transmission gear, and the transmission gear meshes with the transmission ring gear.

[0009] Preferably, a second hollow rotating ring is rotatably mounted on the outer wall of the first hollow rotating ring, the second hollow rotating ring is connected to the first hollow rotating ring and the annular frame, and an infusion pipe is fixedly connected to the second hollow rotating ring.

[0010] Preferably, a fixing plate is fixedly connected to the inner wall of the spray pipe, a transmission rod is rotatably connected to the fixing plate, one end of the transmission rod passes through the fixing plate, a plurality of vortex fan blades are fixedly connected to the other end of the transmission rod, and a first abutment block is fixedly connected to the end of the transmission rod.

[0011] Preferably, the first contact block has a first contact slope, the first contact block has a first through hole, the transmission rod is a hollow rod, and the transmission rod is connected to the first through hole.

[0012] Preferably, a plurality of annularly distributed second contact blocks are fixedly connected to the first contact slope, and the second contact blocks are provided with second contact slopes.

[0013] Preferably, an abutting guide rod is fixedly connected to the jet guide plate, and an abutting ball is rotatably installed at one end of the abutting guide rod, and the movement trajectory of the second abutting block abuts against the abutting ball.

[0014] Preferably, a rotor hub is fixedly connected to the outer wall of the rotor, and multiple mounting holes are provided on the first rotor mounting base.

[0015] Compared with the prior art, the beneficial effects of the present invention are: 1. In this invention, when the second contact block moves circumferentially to release its contact with the contact ball, the torsion spring resets and drives the jet guide plate to rotate and reset. Since multiple second contact blocks are provided, the jet guide plate will swing back and forth rapidly during the lubricant spraying process, thereby making the lubricant spray more evenly cover the rotor and inner bearing ring within the spray range.

[0016] 2. In this invention, since the second contact blocks are all set on the first contact inclined surface of the inclined surface, the influence of each second contact block on the rotation angle of the jet guide plate is different when they contact each other. The jet guide plate can swing from a larger angle, so that the coverage area of ​​the lubricating fluid guided by the jet guide plate is further expanded.

[0017] 3. In this invention, the servo drive motor is started periodically. After the servo drive motor is started, it drives the transmission gear to rotate. When the transmission gear rotates, it meshes with the transmission gear ring. After the transmission gear ring rotates, it drives the first hollow rotating ring to rotate. When the first hollow rotating ring rotates, it drives the arc-shaped scraper to scrape within the annular frame, scraping away the lubricating fluid impurities on the inner wall of the annular frame to prevent them from accumulating and causing blockage.

[0018] 4. In this invention, after the high-pressure lubricating fluid enters the infusion pipeline, it is transported into the second hollow rotating ring and the first hollow rotating ring, and finally enters the annular frame. After the lubricating fluid enters the annular frame and reaches a certain pressure, it is sprayed outward from the spray pipe. Part of it is sprayed directly onto the rotor, the inner bearing ring, and the outer bearing ring, while another part is sprayed onto the spray guide plate and then sprayed out from multiple third through holes on the spray guide plate, forming an atomized spray onto the rotor, the inner bearing ring, and the outer bearing ring, thus improving the lubrication effect. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention; Figure 2 This is a schematic diagram of the overall bottom view of the present invention; Figure 3 This is a schematic diagram of the annular frame and its surrounding structure of the present invention; Figure 4 This is a schematic diagram of the annular frame and its surrounding cross-sectional structure according to the present invention; Figure 5 For the present invention Figure 4 Enlarged structural diagram at point A in the middle; Figure 6 This is a schematic diagram of the spray pipe structure of the present invention; Figure 7 This is a schematic diagram of the cross-sectional structure of the spray pipe of the present invention; Figure 8 For the present invention Figure 7 Enlarged structural diagram at point B.

[0020] In the attached diagram, the components represented by each number are as follows: 1. Motor output shaft; 2. Rotor; 3. Rotor hub; 4. Inner bearing ring; 5. Outer bearing ring; 6. First rotor mounting base; 7. Support frame; 8. Second rotor mounting base; 9. Mounting hole; 10. Annular frame; 11. Fixed frame; 12. Servo drive motor; 13. Transmission gear; 14. Transmission gear ring; 15. First hollow rotating ring; 16. Second hollow rotating ring; 17. Infusion tubing; 18. Arc-shaped scraper ; 19. Spray pipe; 20. Vortex fan blade; 21. Transmission rod; 22. Fixing plate; 23. First contact block; 24. First contact ramp; 25. First through hole; 26. Second through hole; 27. Second contact block; 28. Second contact ramp; 29. ​​Guide frame; 30. Rotating rod; 31. Torsion spring; 32. Rotating block; 33. Spray guide plate; 34. Third through hole; 35. Contact guide rod; 36. Contact ball. Detailed Implementation

[0021] The technical solutions of 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.

[0022] This invention provides a technical solution: such as Figures 1-8The rotor mounting structure for a crusher shown includes a motor output shaft 1, a rotor 2 fixedly mounted on the motor output shaft 1, and a first rotor mounting base 6. An inner bearing ring 4 is fixedly mounted on the outer wall of the rotor 2, and an outer bearing ring 5 is rotatably fitted onto the outer wall of the inner bearing ring 4. Multiple support frames 7 are fixedly connected to the outer wall of the first rotor mounting base 6, and a second rotor mounting base 8 is fixedly connected to the outer wall of the support frames 7. After aligning the rotor 2 with the two inner bearing rings 4, the inner bearing ring 4 and the outer bearing ring 5 are placed between the second rotor mounting base 8, the support frames 7, and the first rotor mounting base 6. At this time, the position of the outer bearing ring 5 is restricted. The first rotor mounting base 6 is fixed in the crusher's installation position through multiple mounting holes 9. The crusher is then started, and the crusher's motor drives the motor output shaft 1 to rotate, causing the rotor 2 to rotate synchronously. Tools such as a breaker hammer can be mounted on the rotor hub 3 for crushing operations. The first rotor mounting base 6 and the second rotor mounting base 8 work together to restrict the position of the outer bearing ring 5. A ring is fixedly connected to the outer wall of the first rotor mounting base 6. The annular frame 10 has two spray pipes 19 fixedly connected to its inner wall. A guide frame 29 is fixedly installed at the end of each spray pipe 19. A spray guide plate 33 is hinged to the guide frame 29. A first hollow rotating ring 15 is rotatably mounted on the annular frame 10. Multiple arc-shaped scrapers 18 are fixedly connected to the outer wall of the first hollow rotating ring 15. Multiple second through holes 26 are provided on the arc-shaped scrapers 18. When periodically lubricating the inner bearing ring 4 and the rotor 2, an external high-pressure lubricating fluid pipe is connected to the infusion pipeline 17. After entering the infusion pipeline 17, the lubricant is transported through the infusion pipeline 17 into the second hollow rotating ring 16 and the first hollow rotating ring 15, and finally enters the annular frame 10. After the lubricant enters the annular frame 10 and reaches a certain pressure, it is sprayed outward from the spray pipe 19. Part of it is sprayed directly onto the rotor 2, the inner bearing ring 4, and the outer bearing ring 5, while another part is sprayed onto the spray guide plate 33 and then sprayed out from the multiple third through holes 34 on the spray guide plate 33, forming an atomized spray onto the rotor 2, the inner bearing ring 4, and the outer bearing ring 5, resulting in better lubrication.

[0023] A rotating rod 30 is rotatably connected to the inner wall of the guide frame 29, and a rotating block 32 is fixedly connected to the outer wall of the rotating rod 30. A torsion spring 31 is sleeved on the rotating rod 30. One end of the torsion spring 31 is fixedly connected to the outer wall of the rotating block 32, and the other end of the torsion spring 31 is fixedly connected to the inner wall of the guide frame 29. A jet guide plate 33 is fixedly connected to the outer wall of the rotating block 32, and a plurality of third through holes 34 are provided on the jet guide plate 33.

[0024] A transmission gear ring 14 is fixedly connected to the inner wall of the first hollow rotating ring 15, and a fixed frame 11 is fixedly connected to the outer wall of the annular frame 10. A servo drive motor 12 is fixedly installed on the outer wall of the fixed frame 11.

[0025] The output end of the servo drive motor 12 is fixedly connected to a transmission gear 13, which meshes with the transmission gear ring 14.

[0026] A second hollow rotating ring 16 is rotatably mounted on the outer wall of the first hollow rotating ring 15. The second hollow rotating ring 16 is connected to the first hollow rotating ring 15 and the annular frame 10. An infusion pipe 17 is fixedly connected to the second hollow rotating ring 16.

[0027] A fixing plate 22 is fixedly connected to the inner wall of the spray pipe 19. A transmission rod 21 is rotatably connected to the fixing plate 22. One end of the transmission rod 21 passes through the fixing plate 22, and multiple vortex fan blades 20 are fixedly connected to the other end of the transmission rod 21. A first contact block 23 is fixedly connected to the end of the transmission rod 21.

[0028] The first contact block 23 has a first contact slope 24, and a first through hole 25 is formed through the first contact block 23. The transmission rod 21 is a hollow rod and communicates with the first through hole 25. Multiple annularly distributed second contact blocks 27 are fixedly connected to the first contact slope 24, and second contact slopes 28 are formed on the second contact blocks 27. A contact guide rod 35 is fixedly connected to the jet guide plate 33, and a contact ball 36 is rotatably installed at one end of the contact guide rod 35. The movement trajectory of the second contact blocks 27 is related to... When the lubricating fluid enters the spray pipe 19, it impacts the surface of the vortex fan blade 20, causing it to rotate. This rotation drives the transmission rod 21 to rotate synchronously. The rotation of the transmission rod 21 then drives the first contact block 23 to rotate. As the first contact block 23 rotates, the contact guide rod 35 causes the contact ball 36 to roll against the surface of the first contact inclined surface 24. During this rolling motion, the contact ball 36 contacts the second contact block 27, causing the contact ball 36 to... 6. Rolling along the second abutting inclined plane 28, the abutting ball 36 drives the abutting guide rod 35 to move closer to the jet guide plate 33, causing the jet guide plate 33 to be stressed and drive the rotating block 32 and rotating rod 30 to rotate along the inner wall of the guide frame 29. During rotation, the torsion spring 31 is twisted. As the first abutting block 23 continues to rotate, when the second abutting block 27 moves circumferentially and releases its contact with the abutting ball 36, the torsion spring 31 resets, causing the jet guide plate 33 to rotate and reset. Because the second abutting block 27 is set... Since there are multiple second contact blocks 27, the spray guide plate 33 will swing back and forth rapidly during the lubricant spraying process, so that the lubricant can be sprayed more evenly to cover the rotor 2 and the inner bearing ring 4. Since the second contact blocks 27 are all set on the surface of the first contact slope 24 of the inclined surface, the influence of each second contact block 27 on the rotation angle of the spray guide plate 33 is different. The spray guide plate 33 can swing from a larger angle, so that the coverage area of ​​the lubricant guided by the spray guide plate 33 is further expanded.

[0029] The outer wall of rotor 2 is fixedly connected to rotor hub 3, and multiple mounting holes 9 are provided on the first rotor mounting base 6.

[0030] Working principle: When using the rotor mounting structure of this crusher, first connect the rotor 2 with the two inner bearing rings 4, then place the inner bearing rings 4 and the outer bearing rings 5 ​​between the second rotor mounting base 8, the support frame 7, and the first rotor mounting base 6. At this time, the position of the outer bearing ring 5 is restricted. Fix the first rotor mounting base 6 to the installation position of the crusher through multiple mounting holes 9. Then start the crusher. When the motor of the crusher drives the motor output shaft 1 to rotate, it drives the rotor 2 to rotate synchronously. Tools such as breaker hammers can be installed on the rotor hub 3, and crushing operations can be carried out.

[0031] To ensure proper operation, the inner bearing ring 4 and rotor 2 need to be lubricated periodically. An external high-pressure lubricant pipe is connected to the infusion pipe 17. The high-pressure lubricant enters the infusion pipe 17 and is then transported into the second hollow rotating ring 16 and the first hollow rotating ring 15, finally entering the annular frame 10. Once the lubricant reaches a certain pressure in the annular frame 10, it is sprayed outwards from the spray pipe 19. Part of the lubricant is sprayed directly onto the rotor 2, inner bearing ring 4, and outer bearing ring 5, while another part is sprayed onto the spray guide plate 33 and then exits from multiple third through holes 34 on the spray guide plate 33, forming an atomized spray onto the rotor 2, inner bearing ring 4, and outer bearing ring 5, resulting in better lubrication.

[0032] After the lubricant enters the spray pipe 19, it impacts the surface of the vortex fan blade 20, causing it to rotate. This rotation drives the transmission rod 21 to rotate synchronously. The rotation of the transmission rod 21 causes the first contact block 23 to rotate. As the first contact block 23 rotates, the contact guide rod 35 drives the contact ball 36 to roll against the surface of the first contact slope 24. The rolling of the contact ball 36 causes it to contact the second contact block 27, which in turn causes it to roll along the second contact slope 28. This causes the contact ball 36 to move the contact guide rod 35 towards the spray guide plate 33, thus causing the spray guide plate 33 to rotate along the inner wall of the guide frame 29. During this rotation, the rotation causes a twisting motion. As the first contact block 23 continues to rotate, when the second contact block 27 moves circumferentially to release its contact with the contact ball 36, the torsion spring 31 resets, causing the jet guide plate 33 to rotate and reset. Since multiple second contact blocks 27 are provided, the jet guide plate 33 will swing back and forth rapidly during the lubricant spraying process, thereby making the lubricant spray more evenly cover the rotor 2 and inner bearing ring 4 within the spray range. Since the second contact blocks 27 are all provided on the surface of the first contact inclined surface 24 of the inclined surface, the influence of each second contact block 27 on the rotation angle of the jet guide plate 33 is different. The jet guide plate 33 can swing from a larger angle, thereby further expanding the coverage area of ​​the lubricant guided by the jet guide plate 33.

[0033] To prevent the lubricant inside the annular frame 10 from accumulating impurities and causing blockages, the servo drive motor 12 is started periodically. After the servo drive motor 12 starts, it drives the transmission gear 13 to rotate. When the transmission gear 13 rotates, it meshes with the transmission gear ring 14. When the transmission gear ring 14 rotates, it drives the first hollow rotating ring 15 to rotate. When the first hollow rotating ring 15 rotates, it drives the arc-shaped scraper 18 to scrape and brush inside the annular frame 10, scraping away the lubricant impurities on the inner wall of the annular frame 10 and preventing them from accumulating and causing blockages.

[0034] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus.

[0035] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A rotor mounting structure for a crusher, comprising a motor output shaft (1), a rotor (2) fixedly mounted on the motor output shaft (1), and a first rotor mounting base (6), characterized in that: An inner bearing ring (4) is fixedly installed on the outer wall of the rotor (2). An outer bearing ring (5) is rotatably sleeved on the outer wall of the inner bearing ring (4). A plurality of support frames (7) are fixedly connected to the outer wall of the first rotor mounting base (6). A second rotor mounting base (8) is fixedly connected to the outer wall of the support frame (7). The first rotor mounting base (6) and the second rotor mounting base (8) work together to restrict the position of the outer bearing ring (5). An annular frame (10) is fixedly connected to the outer wall of the first rotor mounting base (6). Two spray pipes (19) are fixedly connected to the inner wall of the annular frame (10). A guide frame (29) is fixedly installed at the end of the spray pipe (19). A spray guide plate (33) is hinged on the guide frame (29). A first hollow rotating ring (15) is rotatably installed on the annular frame (10). A plurality of arc-shaped scrapers (18) are fixedly connected to the outer wall of the first hollow rotating ring (15). A plurality of second through holes (26) are opened on the arc-shaped scrapers (18).

2. The rotor mounting structure for a crusher according to claim 1, characterized in that: The inner wall of the guide frame (29) is rotatably connected to a rotating rod (30), and the outer wall of the rotating rod (30) is fixedly connected to a rotating block (32). A torsion spring (31) is sleeved on the rotating rod (30). One end of the torsion spring (31) is fixedly connected to the outer wall of the rotating block (32), and the other end of the torsion spring (31) is fixedly connected to the inner wall of the guide frame (29). The jet guide plate (33) is fixedly connected to the outer wall of the rotating block (32), and multiple third through holes (34) are opened on the jet guide plate (33).

3. The rotor mounting structure for a crusher according to claim 1, characterized in that: The inner wall of the first hollow rotating ring (15) is fixedly connected to a transmission gear ring (14), the outer wall of the ring frame (10) is fixedly connected to a fixed frame (11), and the outer wall of the fixed frame (11) is fixedly installed with a servo drive motor (12).

4. The rotor mounting structure for a crusher according to claim 3, characterized in that: The output end of the servo drive motor (12) is fixedly connected to a transmission gear (13), and the transmission gear (13) meshes with the transmission gear ring (14).

5. The rotor mounting structure for a crusher according to claim 1, characterized in that: A second hollow rotating ring (16) is rotatably mounted on the outer wall of the first hollow rotating ring (15). The second hollow rotating ring (16) is connected to the first hollow rotating ring (15) and the annular frame (10). An infusion pipe (17) is fixedly connected to the second hollow rotating ring (16).

6. The rotor mounting structure for a crusher according to claim 1, characterized in that: A fixing plate (22) is fixedly connected to the inner wall of the spray pipe (19). A transmission rod (21) is rotatably connected to the fixing plate (22). One end of the transmission rod (21) passes through the fixing plate (22). A plurality of vortex fan blades (20) are fixedly connected to the other end of the transmission rod (21). A first abutting block (23) is fixedly connected to the end of the transmission rod (21).

7. The rotor mounting structure for a crusher according to claim 6, characterized in that: The first contact block (23) has a first contact slope (24) and a first through hole (25) through it. The transmission rod (21) is a hollow rod and is connected to the first through hole (25).

8. The rotor mounting structure for a crusher according to claim 7, characterized in that: Multiple annularly distributed second contact blocks (27) are fixedly connected to the first contact slope (24), and the second contact blocks (27) are provided with second contact slopes (28).

9. A rotor mounting structure for a crusher according to claim 8, characterized in that: A contact guide rod (35) is fixedly connected to the jet guide plate (33). A contact ball (36) is rotatably installed at one end of the contact guide rod (35). The movement trajectory of the second contact block (27) is in contact with the contact ball (36).

10. A rotor mounting structure for a crusher according to claim 1, characterized in that: The rotor (2) is fixedly connected to a rotor hub (3), and the first rotor mounting base (6) has multiple mounting holes (9).

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