Self-adjusting transmission device for circular vibrating screen

Abstract

This application discloses a self-adjusting transmission device for a circular vibrating screen, relating to the field of circular vibrating screen technology. The application includes a frame, a motor mounted on the frame, and a second coupling mounted on the vibrator. A first pulley is mounted on the output shaft of the motor. A bearing housing is mounted on the frame, and a main shaft rotatably passes through the bearing housing. Two spaced-apart roller bearings are disposed between the bearing housing and the main shaft. The second pulley and the first coupling are mounted on the main shaft. This application abandons the direct V-belt connection transmission method of the prior art. In use, the V-belt transmission drives the main shaft and the first coupling to rotate together, causing multiple rubber belts to move and deform. Through the pulling action of the multiple rubber belts, the second coupling rotates, enabling the vibrator to operate. Because the second coupling and the first coupling are transmitted through multiple rubber belts, their connection is close to flexible.

Description

Technical Field

[0001] This application relates to the field of circular vibrating screen technology, specifically to a self-adjusting transmission device for a circular vibrating screen. Background Technology

[0002] A circular vibrating screen, also known as a circular vibrating screen, is a multi-parameter, high-efficiency new type of vibrating screen. It uses a cylindrical eccentric shaft vibrator and adjustable eccentric blocks to control amplitude. It features a long material flow path, multiple screening specifications, reliable structure, strong excitation force, high screening efficiency, low vibration noise, durability, easy maintenance, and safe operation. The circular vibrating screen mainly consists of a screen box, screen mesh, vibrator, damping spring device, and base frame. The vibrator is mounted on the side plate of the screen box and is driven by a motor via a V-belt to generate centrifugal inertial force, forcing the screen box to vibrate. However, because the V-belt is directly connected, the V-belt drive is prone to vibration with the equipment, which can lead to belt skipping, motor vibration, and other risks. The smoothness of the transmission needs improvement. Therefore, a self-adjusting transmission device for the circular vibrating screen is proposed. Utility Model Content

[0003] The purpose of this application is to solve the technical problem that, due to the direct connection of the V-belt, the V-belt drive is prone to vibration with the vibration of the equipment, which may lead to risks such as belt skipping and motor shaking, and the transmission stability needs to be improved. This application provides a self-adjusting transmission device for a circular vibrating screen.

[0004] To achieve the above objectives, this application specifically adopts the following technical solution:

[0005] A self-adjusting transmission device for a circular vibrating screen includes a frame, a motor mounted on the frame, and a second coupling mounted on the vibrator. A first pulley is mounted on the output shaft of the motor. A bearing housing is mounted on the frame, and a main shaft rotatably passes through the bearing housing. Two spaced roller bearings are mounted between the bearing housing and the main shaft. The second pulley and the first coupling are mounted on the main shaft. Multiple V-belts are wound around the first and second pulleys. Multiple rubber belts are mounted between the first and second couplings.

[0006] Furthermore, the frame is provided with a protective cover covering the outside of the first pulley, the second pulley, and multiple V-belts.

[0007] Furthermore, the main shaft is provided with a large bushing and a small bushing. The second pulley and the first coupling are slidably sleeved on the main shaft. The opposite sides of the large bushing abut against one of the roller bearings and the second pulley, respectively. The opposite sides of the small bushing abut against the other roller bearing and the first coupling, respectively. Locking elements are provided at both ends of the main shaft, and the second pulley and the first coupling are locked or unlocked by the two locking elements.

[0008] Furthermore, both the second pulley and the first coupling are provided with multiple grooves, and the main shaft is provided with multiple flat keys that are inserted into the grooves.

[0009] Furthermore, the locking component includes a shaft end baffle and a first hexagonal bolt. The shaft end baffle abuts and overlaps with the main shaft, the second pulley, or the first coupling. The free end of the first hexagonal bolt passes through the shaft end baffle and is threaded into the main shaft. A first spring washer and a first flat washer are provided between the first hexagonal bolt and the shaft end baffle.

[0010] Furthermore, the bearing housing is constructed with two oil inlets and two oil outlets, each corresponding to two roller bearings. An oil cup is provided in the oil inlet, and an internal hexagonal plug is provided in the oil outlet.

[0011] Furthermore, the bearing housing is constructed with two sealing grooves, and felt ring oil seals are provided in the sealing grooves. The two felt ring oil seals respectively abut and overlap with the large bushing and the small bushing.

[0012] Furthermore, it also includes multiple pressure plates and second hexagonal bolts. The pressure plates are provided with multiple through holes, and both ends of the rubber belt are provided with multiple through holes. The first coupling and the second coupling are provided with multiple mounting holes. The free end of the second hexagonal bolt passes through the through holes, through holes, and mounting holes in sequence and is threaded with a locking nut. A second spring washer and a second flat washer are provided between the locking nut and the first coupling or the second coupling.

[0013] The beneficial effects of this application are as follows: This application abandons the transmission method of direct connection of V-belt in the prior art. In use, the V-belt drive drives the main shaft and the first coupling to rotate together, which drives multiple rubber belts to move and deform together. Through the pulling action of multiple rubber belts, the second coupling is driven to rotate, so that the vibrator works. Since the second coupling and the first coupling are driven by multiple rubber belts, the connection between the two is close to flexible. Therefore, when the second coupling jumps or vibrates, it will not affect the normal rotation of the first coupling. This avoids the V-belt drive vibrating with the vibration of the equipment, eliminates the risk of V-belt jumping and motor vibration, and makes the transmission smoother. Therefore, it is more practical. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural view of this application;

[0015] Figure 2 This is a three-dimensional sectional view of this application;

[0016] Figure 3 This application Figure 2 Enlarged view of point A in the middle;

[0017] Figure 4 This application Figure 2 Enlarged view of point B in the middle;

[0018] Figure 5 This application Figure 2 Enlarged view of point C in the middle;

[0019] Figure 6 This application Figure 2 Enlarged view of point D in the middle;

[0020] Figure 7 This is a three-dimensional view of part of the structure of this application;

[0021] Figure 8 This is an exploded perspective view of part of the structure of this application;

[0022] Figure 9 This application Figure 8 A three-dimensional sectional view;

[0023] Figure 10 This application Figure 9 Enlarged view of point E in the middle.

[0024] Reference numerals: 1. Frame; 2. Motor; 3. Second coupling; 4. First pulley; 5. Bearing housing; 6. Main shaft; 7. Roller bearing; 8. Second pulley; 9. First coupling; 10. V-belt; 11. Rubber belt; 12. Protective cover; 13. Large bushing; 14. Small bushing; 15. Groove; 16. Flat key; 17. Shaft end plate; 18. First hexagonal bolt; 19. First spring washer; 20. First flat washer; 21. Oil inlet; 22. Oil outlet; 23. Oil cup; 24. Socket hexagonal plug; 25. Sealing groove; 26. Felt ring oil seal; 27. Pressure plate; 28. Second hexagonal bolt; 29. ​​Through hole; 30. Through hole; 31. Mounting hole; 32. Lock nut; 33. Second spring washer; 34. Second flat washer. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings.

[0026] like Figures 1-10As shown, an embodiment of this application proposes a self-adjusting transmission device for a circular vibrating screen, including a frame 1, a motor 2 mounted on the frame 1, and a second coupling 3 mounted on the vibrator. The motor 2 is fixed on the frame 1 and its output shaft is in a horizontal direction. The second coupling 3 is fixed on the vibrator and its axis is in a horizontal direction. The vibrator is not shown in the accompanying drawings. A first pulley 4 is mounted on the output shaft of the motor 2. The first pulley 4 is fixed on the output shaft of the motor 2 and the two are coaxially distributed.

[0027] The distinguishing technical features of this application also include: a bearing seat 5 is provided on the frame 1, the bearing seat 5 is detachably mounted on the frame 1 by bolts, a main shaft 6 is rotatably passed through the bearing seat 5, the axis of the main shaft 6 is in the horizontal direction, two roller bearings 7 are provided between the bearing seat 5 and the main shaft 6, the roller bearings 7 are located outside the main shaft 6 and the two are coaxially distributed, a second pulley 8 and a first coupling 9 are provided on the main shaft 6, the main shaft 6, the second pulley 8 and the first coupling 9 are coaxially distributed, a plurality of V-belts 10 are wound around the first pulley 4 and the second pulley 8, the plurality of V-belts 10 are evenly distributed, a plurality of rubber belts 11 are provided between the first coupling 9 and the second coupling 3, the rubber belts 11 form a U-shaped structure, the plurality of rubber belts 11 are distributed in a ring array;

[0028] When in use, motor 2 operates, and the output shaft rotates, driving the first pulley 4 to rotate together. Multiple V-belts 10 rotate together and drive the second pulley 8 to rotate. When the second pulley 8 rotates, it drives the main shaft 6 and the first coupling 9 to rotate together. When the main shaft 6 rotates, it is supported by two roller bearings 7, which reduces the coefficient of friction during the rotation of the main shaft 6 and ensures rotational accuracy. When the first coupling 9 rotates, it drives multiple rubber belts 11 to move and deform together. Through the pulling action of multiple rubber belts 11, it drives the second coupling 3 to rotate, making the vibrator work. Since the second coupling 3 and the first coupling 9 are connected by multiple rubber belts 11, the connection between them is close to flexible. Therefore, when the second coupling 3 jumps or vibrates, it will not affect the normal rotation of the first coupling 9. This avoids the V-belt drive vibrating with the vibration of the equipment, eliminates the risk of the V-belt 10 jumping or the motor 2 vibrating, and makes the transmission smoother.

[0029] In summary, this application abandons the direct V-belt connection transmission method in the prior art. In use, the V-belt drive drives the main shaft 6 and the first coupling 9 to rotate together, causing multiple rubber belts 11 to move and deform together. Through the pulling action of the multiple rubber belts 11, the second coupling 3 is driven to rotate, making the vibrator work. Since the second coupling 3 and the first coupling 9 are connected by multiple rubber belts 11, the connection between them is close to flexible. Therefore, when the second coupling 3 jumps or vibrates, it will not affect the normal rotation of the first coupling 9. This avoids the V-belt drive vibrating with the vibration of the equipment, eliminates the risk of the V-belt 10 jumping or the motor 2 vibrating, and makes the transmission smoother. Therefore, it is more practical.

[0030] like Figure 1 As shown, a further technical solution of this application is disclosed. A protective cover 12 is provided on the frame 1, which covers the outside of the first pulley 4, the second pulley 8 and a plurality of V-belts 10. The protective cover 12 is fixed on the frame 1.

[0031] Referring to the above, when in use, the protective cover 12 can not only protect the first pulley 4, the second pulley 8 and the multiple V-belts 10, but also prevent workers from accidentally touching the rotating first pulley 4, the second pulley 8 and the multiple V-belts 10, thus improving the safety of use.

[0032] like Figures 3-6 As shown, a further technical solution of this application is disclosed. A large bushing 13 and a small bushing 14 are provided on the main shaft 6. Both the large bushing 13 and the small bushing 14 are fixed on the outside of the main shaft 6 and are coaxially distributed with the main shaft 6. The second pulley 8 and the first coupling 9 are slidably sleeved on the main shaft 6. The second pulley 8 and the first coupling 9 slide in the axial direction of the main shaft 6. The opposite side of the large bushing 13 abuts and overlaps with one of the roller bearings 7 and the second pulley 8 respectively. The opposite side of the small bushing 14 abuts and overlaps with the other roller bearing 7 and the first coupling 9 respectively. Locking members are provided at both ends of the main shaft 6. The second pulley 8 and the first coupling 9 are locked or unlocked by the two locking members respectively.

[0033] Referring to the above, in the initial state, both the second pulley 8 and the first coupling 9 are mounted on the main shaft 6. The opposite sides of the second pulley 8 and the first coupling 9 abut against the large bushing 13 and the small bushing 14, respectively. The second pulley 8 and the first coupling 9 are locked by two locking pieces. The second pulley 8 and the first coupling 9 can be unlocked by the two locking pieces, allowing the second pulley 8 and the first coupling 9 to slide away from the main shaft 6, so as to disassemble the second pulley 8 and the first coupling 9 for easy maintenance. Conversely, during installation, the second pulley 8 and the first coupling 9 are slidably mounted on the main shaft 6, with the opposite sides of the second pulley 8 and the first coupling 9 abutting against the large bushing 13 and the small bushing 14, respectively. The second pulley 8 and the first coupling 9 are then locked by the two locking pieces.

[0034] like Figure 3 As shown, a further technical solution of this application is disclosed. Both the second pulley 8 and the first coupling 9 are provided with a plurality of grooves 15. The grooves 15 are distributed along the axial direction of the main shaft 6. The main shaft 6 is provided with a plurality of flat keys 16 that are inserted into the grooves 15. The flat keys 16 are fixed on the outer surface of the main shaft 6 and distributed along the axial direction of the main shaft 6.

[0035] Referring to the above, in the initial state, the second pulley 8 and the first coupling 9 are both mounted on the main shaft 6, and multiple flat keys 16 are respectively inserted into multiple grooves 15. When the second pulley 8 rotates, the main shaft 6 is driven to rotate through the cooperation between the flat key 16 and the groove 15. When the main shaft 6 rotates, the first coupling 9 is driven to rotate through the cooperation between the flat key 16 and the groove 15, thereby improving the transmission stability. Conversely, when the second pulley 8 and the first coupling 9 slide away from the main shaft 6, the flat key 16 exits the groove 15. When the second pulley 8 and the first coupling 9 are both slidably sleeved on the main shaft 6, the flat key 16 is re-inserted into the groove 15.

[0036] like Figure 3 As shown, the specific structure of the locking component of this application is disclosed. The locking component includes a shaft end baffle 17 and a first hexagonal bolt 18. The shaft end baffle 17 is vertical and the first hexagonal bolt 18 is horizontal. The shaft end baffle 17 abuts and overlaps with the main shaft 6, the second pulley 8 or the first coupling 9. The free end of the first hexagonal bolt 18 passes through the shaft end baffle 17 and is threaded with the main shaft 6. A first spring washer 19 and a first flat washer 20 are provided between the first hexagonal bolt 18 and the shaft end baffle 17. The first flat washer 20 abuts and overlaps with the shaft end baffle 17.

[0037] Referring to the above, in the initial state, one of the shaft end baffles 17 is in contact with both the main shaft 6 and the second pulley 8, and the other shaft end baffle 17 is in contact with both the main shaft 6 and the first coupling 9. The free end of the first hexagonal bolt 18 passes through the shaft end baffle 17 and is threaded into the main shaft 6. The first spring washer 19 and the first flat washer 20 are located on the first hexagonal bolt 18 and between the first hexagonal bolt 18 and the shaft end baffle 17. Through the cooperation of the first spring washer 19 and the first flat washer 20, This reduces the risk of the first hexagonal bolt 18 loosening due to vibration. Because the second pulley 8 and the first coupling 9 are blocked by the two shaft end baffles 17 respectively, the second pulley 8 and the first coupling 9 cannot slide, thus locking the second pulley 8 and the first coupling 9. Conversely, by loosening the first hexagonal bolt 18 away from the main shaft 6, the shaft end baffles 17 are moved away from the main shaft 6. Due to the removal of the obstruction of the shaft end baffles 17, the second pulley 8 and the first coupling 9 can slide, thus unlocking the second pulley 8 and the first coupling 9.

[0038] like Figures 4-5 As shown, a further technical solution of this application is disclosed. The bearing housing 5 is constructed with two oil inlet holes 21 and two oil outlet holes 22, each corresponding to two roller bearings 7. The oil inlet holes 21 are vertical and the oil outlet holes 22 are horizontal. An oil cup 23 is provided in the oil inlet holes 21. The oil cup 23 is vertical and fixed in the oil inlet holes 21. The oil cup 23 is a device for storing and supplying lubricating oil. An internal hexagonal plug 24 is provided in the oil outlet holes 22.

[0039] Referring to the above, during use, lubricating oil is stored and supplied through the oil cup 23. The lubricating oil drips onto the roller bearing 7 through the oil inlet hole 21 to lubricate the roller bearing 7 and further improve transmission stability. The lubricated oil can be discharged through the oil outlet hole 22 by removing the internal hexagonal screw plug 24, and then the internal hexagonal screw plug 24 can be reinserted into the oil outlet hole 22 to seal the oil outlet hole 22.

[0040] like Figure 4 As shown, a further technical solution of this application is disclosed. The bearing housing 5 is constructed with two sealing grooves 25. Both sealing grooves 25 are constructed in annular shape and are distributed at intervals. Felt ring oil seals 26 are provided in the sealing grooves 25. The felt ring oil seals 26 are constructed in annular shape and are fixed in the sealing grooves 25. The two felt ring oil seals 26 respectively abut and overlap with the large bushing 13 and the small bushing 14.

[0041] Referring to the above, during use, the felt ring oil seal 26 and the sealing groove 25 work together to form a sealing structure, improve the overall sealing performance of the bearing housing 5, reduce the risk of lubricating oil leakage, and further improve the stability of use.

[0042] like Figures 8-10As shown, a further technical solution of this application is disclosed, which also includes multiple pressure plates 27 and second hexagonal bolts 28. Multiple through holes 29 are constructed on the pressure plates 27, and multiple through holes 30 are constructed at both ends of the rubber belt 11. The pressure plates 27 and the rubber belt 11 abut and overlap. The two ends of the rubber belt 11 abut and overlap with the first coupling 9 and the second coupling 3, respectively. Multiple mounting holes 31 are constructed on both the first coupling 9 and the second coupling 3. The free end of the second hexagonal bolt 28 passes through the through holes 29, through holes 30, and mounting holes 31 in sequence and is threaded with a locking nut 32. A second spring washer 33 and a second flat washer 34 are provided between the locking nut 32 and the first coupling 9 or the second coupling 3. The second flat washer 34 abuts and overlaps with the first coupling 9 or the second coupling 3.

[0043] Referring to the above, in the initial state, the rubber belt 11 is in the installation state, with both ends of the rubber belt 11 abutting and overlapping with the first coupling 9 and the second coupling 3, respectively. The through hole 30 communicates with the mounting hole 31. The pressure plate 27 abuts and overlaps with the rubber belt 11, and the through hole 29 communicates with the through hole 30. The free end of the second hexagonal bolt 28 passes through the through hole 29, the through hole 30, and the mounting hole 31 in sequence. The locking nut 32 is threaded onto the second hexagonal bolt 28. The second spring washer 33 and the second flat washer 34 are both fitted onto the second hexagonal bolt. On bolt 28, the second flat washer 34 abuts against and overlaps with the first coupling 9 or the second coupling 3. Through the cooperation of the second spring washer 33 and the second flat washer 34, the risk of the second hexagonal bolt 28 loosening due to vibration can be reduced. In use, the second hexagonal bolt 28 can be disassembled by loosening the locking nut 32 away from the second hexagonal bolt 28, so that the second hexagonal bolt 28 can be removed from the through hole 29, through hole 30 and mounting hole 31, so as to facilitate the subsequent replacement of the rubber belt 11.

[0044] The above description of the disclosed embodiments enables those skilled in the art to make or use this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A self-adjusting transmission device for a circular vibrating screen, comprising a frame (1), a motor (2) arranged on the frame (1), and a second coupling (3) arranged on a vibrator, a first belt pulley (4) being arranged on an output shaft of the motor (2), characterized in that, The frame (1) is provided with a bearing seat (5), and a main shaft (6) is rotatably passed through the bearing seat (5). Two roller bearings (7) are provided between the bearing seat (5) and the main shaft (6). A second pulley (8) and a first coupling (9) are provided on the main shaft (6). Multiple V-belts (10) are wound around the first pulley (4) and the second pulley (8). Multiple rubber belts (11) are provided between the first coupling (9) and the second coupling (3).

2. The self-adjusting transmission device for a circular vibrating screen according to claim 1, characterized in that, The frame (1) is provided with a protective cover (12) covering the outside of the first pulley (4), the second pulley (8) and multiple V-belts (10).

3. The self-adjusting transmission device for a circular vibrating screen according to claim 1, characterized in that, The main shaft (6) is provided with a large bushing (13) and a small bushing (14). The second pulley (8) and the first coupling (9) are slidably sleeved on the main shaft (6). The opposite sides of the large bushing (13) abut against one of the roller bearings (7) and the second pulley (8), respectively. The opposite sides of the small bushing (14) abut against the other roller bearing (7) and the first coupling (9), respectively. Both ends of the main shaft (6) are provided with locking members, which lock or unlock the second pulley (8) and the first coupling (9) respectively.

4. The self-adjusting transmission device for a circular vibrating screen according to claim 3, characterized in that, The second pulley (8) and the first coupling (9) are both provided with multiple grooves (15), and the main shaft (6) is provided with multiple flat keys (16) that are inserted into the grooves (15).

5. The self-adjusting transmission device for a circular vibrating screen according to claim 3, characterized in that, The locking component includes a shaft end baffle (17) and a first hexagonal bolt (18). The shaft end baffle (17) abuts against and overlaps with the main shaft (6), the second pulley (8) or the first coupling (9). The free end of the first hexagonal bolt (18) passes through the shaft end baffle (17) and is threadedly engaged with the main shaft (6). A first spring washer (19) and a first flat washer (20) are provided between the first hexagonal bolt (18) and the shaft end baffle (17).

6. The self-adjusting transmission device for a circular vibrating screen according to claim 1, characterized in that, The bearing housing (5) is constructed with two oil inlet holes (21) and two oil outlet holes (22) corresponding to two roller bearings (7), respectively. An oil cup (23) is provided in the oil inlet hole (21), and an internal hexagonal plug (24) is provided in the oil outlet hole (22).

7. The self-adjusting transmission device for a circular vibrating screen according to claim 3, characterized in that, The bearing housing (5) has two sealing grooves (25), and a felt ring oil seal (26) is provided in the sealing groove (25). The two felt ring oil seals (26) respectively contact and overlap with the large bushing (13) and the small bushing (14).

8. The self-adjusting transmission device for a circular vibrating screen according to claim 1, characterized in that, It also includes multiple pressure plates (27) and second hexagonal bolts (28). The pressure plates (27) have multiple through holes (29). Both ends of the rubber belt (11) have multiple through holes (30). The first coupling (9) and the second coupling (3) have multiple mounting holes (31). The free end of the second hexagonal bolt (28) passes through the through holes (29), through holes (30), and mounting holes (31) in sequence and is threaded with a locking nut (32). A second spring washer (33) and a second flat washer (34) are provided between the locking nut (32) and the first coupling (9) or the second coupling (3).

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