External aligning structure of driving roller bearing of belt conveyor
By adopting an external self-aligning structure on the drive drum of the belt conveyor, the problem of poor sealing of the cassette bearing was solved, achieving good sealing and improved load-bearing capacity, thus ensuring stable operation of the equipment.
Patent Information
- Application Number
- CN202511808608.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-03
- Publication Date
- 2026-01-02
AI Technical Summary
The existing belt conveyor drive drum's tile-type bearing structure has poor sealing, which allows coal powder and rock powder to enter the bearing, affecting equipment operation and limiting load-bearing capacity.
The drive roller adopts an external self-aligning structure, and the bearings at both ends of the drive roller are closely fitted with the side frame bearing mounting positions through surfaces A, B and C, providing adaptive torsional space. Multiple rows of bearings are designed to improve sealing and load-bearing capacity.
This achieves a good seal on the bearings, preventing material from entering, ensuring normal equipment operation, and improving the load-bearing capacity of the drive drum.
Smart Images
Figure CN121247321A_ABST
Abstract
Description
Technical Field
[0001] This invention belongs to the field of belt conveyor technology, specifically relating to an external self-aligning structure for a belt conveyor drive roller bearing. Background Technology
[0002] In mining operations such as coal mining, belt conveyors are important material transportation equipment. As a key component of belt conveyors, the drive drum's operational stability directly affects the material transportation efficiency and operational flexibility.
[0003] Most existing belt conveyor drive drum bearings use a cassette bearing structure. This cassette bearing structure has several drawbacks. For example, in mining underground drive drums, the bearings inside the cassette are double-row tapered self-aligning bearings. Because they are internally self-aligning, the seal between the shaft and the cassette cannot be achieved. Since underground conveyors transport materials such as coal and slag, coal dust and rock powder can enter the bearings. Furthermore, the cassette can only accommodate one internally self-aligning bearing, limiting the maximum load of the drive drum to that bearing. Summary of the Invention
[0004] The purpose of this invention is to provide an external self-aligning structure for a belt conveyor drive roller bearing to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, the present invention provides the following technical solution: an external self-aligning structure for a drive drum bearing of a belt conveyor, comprising a head frame for assembling a belt conveyor, C-shaped bearing mounting assemblies mounted on the side frames of the head frame, and external self-aligning bearings at both ends of the drive drum mounted on the C-shaped bearing mounting positions of the C-shaped bearing mounting positions assembly.
[0006] The C-shaped bearing mounting position assembly 7 consists of two C-shaped bearing mounting positions facing back to back.
[0007] Two drive rollers are mounted side-by-side on the C-shaped bearing mounting positions at both ends of the C-shaped bearing mounting position assembly 7.
[0008] The head frame used to assemble the belt conveyor consists of side frames on both sides, with load-bearing roller support arms installed on the side frames. Load-bearing rollers are installed between the load-bearing support arms on both sides. A front extension beam is installed at the front end of the side frames, and load-bearing roller support arms are also installed on the upper part of the front extension beam. Load-bearing rollers are installed between the load-bearing roller support arms on both sides. A coal unloading drum is installed at the front end of the front extension beam.
[0009] Its working principle is as follows: the conveyor belt passes through the unloading drum, wraps around the two drive drums in an S-shape, and then reaches the tail drum, forming a closed loop after passing through the tail drum and then back to the unloading drum. Under the wrapping tension of the conveyor belt, the bearing force of the front drive drum is in the direction of direction 25 in the figure, and the bearing force of the rear drive drum is in the direction of direction 26 in the figure.
[0010] Therefore, the B and C surfaces on the bearings at both ends of the front drive roller are tightly fitted with the two lower corner surfaces of the mounting assembly of the side frame bearing position, thus forming an external self-aligning structure for the front drive roller through self-adaptation; the A and B surfaces on the bearings at both ends of the rear drive roller are tightly fitted with the two upper corner surfaces of the mounting assembly of the side frame bearing position, thus forming an external self-aligning structure for the rear drive roller through self-adaptation.
[0011] The self-aligning bearing structure on the drive roller has three surfaces. Two of the three surfaces, A, C and C-shaped bearing mounting position, are provided with gaps. These gaps are used to provide adaptive torsional space for the self-aligning bearings at both ends of the drive roller to be misaligned.
[0012] The beneficial effects of this invention are as follows: Through the arrangement of surfaces A, B, and C, and the limiting side stops, during use, surfaces B and C of the assembled or integrated bearing structure connected to the front drive roller are tightly fitted with the two lower corner surfaces of the mounting assembly at the side frame bearing mounting position along the force direction of the front drive roller, forming an external self-aligning structure for the front drive roller. Similarly, surfaces A and B of the assembled or integrated bearing structure connected to the rear drive roller are tightly fitted with the two upper corner surfaces of the mounting assembly at the side frame bearing mounting position along the force direction of the rear drive roller, forming an external self-aligning structure for the rear drive roller. Due to the external self-aligning structure, the bearing has excellent concentricity and sealing, greatly preventing slag and rock powder from entering the bearing during material transport and affecting normal equipment operation. Furthermore, the self-aligning structure allows for the design and installation of multiple rows of bearings, significantly increasing the load-bearing capacity of the drive roller. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the drive roller assembly structure of the present invention; Figure 2 This is a schematic diagram of the structure of the drive roller with an external self-aligning bearing according to the present invention; Figure 3 This is a schematic diagram of the assembled bearing structure of the present invention; Figure 4 This is a schematic diagram of the integrated bearing structure of the present invention; Figure 5 This is a schematic diagram of the bearing mounting position and the upper and lower corner structures of the present invention; Figure 6 This is a schematic diagram showing the force direction of the overall running drum of the present invention.
[0014] The components are as follows: 1.1 Assembled bearing; 1.2 Integrated bearing; 2. Bearing saddle; 3. C-shaped bearing mounting position; 4. Side guard; 5. Conveyor belt running direction; 6. Drive drum; 7. C-shaped bearing mounting position assembly; 8. Upper corner; 9. Lower corner; 10. Tail drum; 11. Coal unloading drum; 12. Front probe beam; 13. Side frame; 14. Bearing roller support arm; 15. Bearing roller; 16. Drive drum power input end; 17. Inner circular surface of bearing saddle; 18. A surface; 19. B surface; 20. C surface; 21. Shell; 22. Bearing; 23. End cover; 24. Conveyor belt; 25. Force direction of front drum; 26. Force direction of rear drum. Detailed Implementation
[0015] The technical solutions in the embodiments of the present invention will be explained by way of example below with reference to the accompanying drawings.
[0016] This embodiment discloses an external self-aligning structure for a belt conveyor drive drum bearing. Please see Figure 1 It includes a head frame for forming a belt conveyor, which consists of a head unloading drum 11, a front beam 12, a side frame 13, a bearing roller 15, and a bearing roller support arm 14; the drive drum 6 is the driving component of the conveyor belt, and the power source is a motor and a reducer, which are input through the two drive drum power input ends 16.
[0017] Please see Figure 2 The drive roller 6 is equipped with external self-aligning bearings at both ends, and the external self-aligning bearings have three surfaces: surface A18, surface B19, and surface C20.
[0018] There are two types of self-aligning bearing structures for the drive drum. Please see Figure 3 The first type is a combination type, which is composed of bearing 1.1 and bearing saddle 2. The bearing saddle has three surfaces: surface A 18, surface B 19, and surface C 20, and side stops 4 are provided on the surfaces.
[0019] Please see Figure 4 The second type is an integrated unit, which is assembled from a housing 21, a bearing 22, and an end cap 23. The housing 21 has three surfaces: surface A 18, surface B 19, and surface C 20, and side guards 4 are provided on the surfaces.
[0020] Please see Figure 5 C-shaped bearing mounting positions 7 are installed on the side frames 13 on both sides of the head frame, and two drive rollers 6 are placed in the C-shaped bearing mounting positions 3 on the C-shaped bearing mounting positions 7.
[0021] The conveyor belt 24 passes through the unloading drum 11, wraps around the two drive drums 6 in an S-shape, and then reaches the tail drum 10. After passing through the tail drum 10, it returns to the unloading drum 11 to form a closed loop. Under the wrapping tension of the conveyor belt, the bearing position force of the front drive drum is shown in the direction of 25, and the bearing position force of the rear drive drum is shown in the direction of 26.
[0022] The self-aligning bearing structure on the drive roller has three surfaces. Two of the three surfaces, A, C and C-shaped bearing mounting position, are provided with gaps. These gaps are used to provide adaptive torsional space for the self-aligning bearings at both ends of the drive roller to be misaligned.
[0023] This invention, through the design of surfaces A, B, and C, and limiting side stops, ensures that during use, surfaces B and C of the assembled or integrated bearing structure connected to the front drive roller are tightly fitted with the two lower corner surfaces of the mounting assembly at the side frame bearing mounting position along the force direction of the front drive roller, forming an external self-aligning structure for the front drive roller. Similarly, surfaces A and B of the assembled or integrated bearing structure connected to the rear drive roller are tightly fitted with the two upper corner surfaces of the mounting assembly at the side frame bearing mounting position along the force direction of the rear drive roller, forming an external self-aligning structure for the rear drive roller. Due to this external self-aligning structure, the bearings exhibit excellent concentricity and sealing, significantly preventing slag and rock powder from entering the bearings during material transport and affecting normal equipment operation. Furthermore, the self-aligning structure allows for the design and installation of multiple rows of bearings, greatly increasing the load-bearing capacity of the drive roller.
Claims
1. An outer aligning structure of a belt conveyor drive drum bearing, comprising a head frame for constituting a belt conveyor, characterized in that, The two side frame of the head frame is provided with C-shaped bearing installation position assembly, the C-shaped bearing installation position has three faces, the outer self-aligning bearing structure on the driving roller also has three faces, the adjacent two faces of the three faces in the C-shaped bearing installation position and the adjacent two faces of the three faces of the outer self-aligning bearing on the driving roller form the outer self-aligning structure of the driving roller of the belt conveyor.
2. The outer self-aligning structure of a belt conveyor drive drum bearing according to claim 1, characterized in that, The outer self-aligning structure bearing has two kinds, the first kind is combined, composed of bearing and bearing saddle, three faces are on the bearing saddle, respectively A face, B face and C face, and the face is limited by the edge block; the second kind is integrated, composed of shell, bearing and end cover, three faces are on the shell, respectively A face, B face and C face, and the face is limited by the edge block.
3. The outer self-aligning structure of a belt conveyor drive drum bearing according to claim 1, characterized in that, The C-shaped bearing installation position assembly is composed of two C-shaped bearing installation positions back to back; the three faces in the C-shaped bearing installation position form the upper corner face and the lower corner face.
4. The outer self-aligning structure of a belt conveyor drive drum bearing according to claim 1, characterized in that, The driving roller of the belt conveyor is composed of two driving rollers installed side by side on the C-shaped bearing installation position assembly and wrapped by the conveyor belt in S shape.
5. The outer self-aligning structure of a belt conveyor drive drum bearing according to claim 4, characterized in that, The driving roller of the belt conveyor is wrapped by the conveyor belt in S shape, the three faces of the outer self-aligning bearing of the driving roller are wrapped by the conveyor belt in S shape, so the adjacent two faces will be matched with the two faces of the C-shaped bearing installation position assembly through self-adaptation to form the outer self-aligning bearing structure of the driving roller.
6. The outer self-aligning structure of a belt conveyor drive drum bearing according to claim 1, characterized in that, The outer self-aligning bearing structure on the driving roller has three faces, A face and C face are provided with gaps between the corresponding two faces of the three faces in the C-shaped bearing installation position, the gaps are used to provide self-adaptive torsion space for the outer self-aligning bearings at both ends of the driving roller.